Wire rope hoist is a small wire rope hoist lifting equipment, with a compact, light weight, small size,wire rope winch parts versatility, easy operation, it can be installed separately on the beam, can also be installed used on electric or manual single-beam, dual-beam, cantilever, gantry cranes.
Wire rope hoist part are: motor, transmission, drum and sprocket to the mutual position of the motor and the reel can be broadly divided into four different types.Initial installation or reassembly Wire rope hoist,Wire rope hoist no-load operation should be carried out operations, but to ensure that the components to be installed, do not energized
plate lifting clamp
2014年9月14日星期日
2014年5月12日星期一
If the contact is an error Wire rope hoist the test system suspend all testing
If the contact is an error, the test system suspend all testing , and prompts the user to the appropriate treatment and so on. This will ensure maximum system security and reliability. ( 2 ) Taking into account at the time of the industrial system fails, the test system can still perform some simple operation , it set up a "manual" and "automatic " two steps in the test module. ( 3) Before the test , the electric hoist with remote tester needs to be tested for each wire rope hoist enter a unique code , some of the data corresponding test data and external testers as the information is stored in the database, when required by this encoding and check out all the relevant details . Acquisition and state the amount of read access channel 4.3.2 process data in the test system is wire rope winch accessed through the channel to carry out the process , due to the passage of Chapter IV of the hardware design process has done a more detailed description , so this summary discusses only the actual preparation of technical procedures . To achieve the so-called port inspection 4.3.2.1 port scanning is scanning inspection IPC test program at a certain time interval data acquisition card I / O ports and digital I / O port to read and write . [ 17 ] [ 21 ] precision generated by cyclic function of time interval is poor
2013年8月30日星期五
Proper maintenance of wire rope pulling hoist tips
Wire rope pulling hoist lifting equipment is widely used one, there are lifting, pulling, tensioning three functions, high safety factor, long service life. Good maintenance methods help to prolong the life of lever
manual hoist .
So how to better maintain the wire rope pulling hoist, the following points for you, I hope for your help:
Wire rope pulling hoist maintenance
1, each job is completed, we must first wipe the loose end of the rope on the adhesion of mud,lift hoist dust or grease, loosen the jaw, out of wire rope, wire rope sequence will gather around the shelves, and wipe the length of wire rope, wire rope stored in dry place to prevent corrosion.
2 year deal at least four times a gourd maintenance treatment, such as diesel cleaning parts, and calcium-based grease lubrication.
3, when the internal movement poured into the mud, cement or other dirt, use a rinse, then clean diesel; cleaning, dry calcium-based grease on the grease; finally release the jaws,wire rope winch wipe with a clean cotton pliers mouth of grease and moisture.
4, when the jaws wear, carrying capacity is less than 80% of rated load, replace the jaw; when the wire rope diameter is reduced 10%, the rope should be replaced
So how to better maintain the wire rope pulling hoist, the following points for you, I hope for your help:
Wire rope pulling hoist maintenance
1, each job is completed, we must first wipe the loose end of the rope on the adhesion of mud,lift hoist dust or grease, loosen the jaw, out of wire rope, wire rope sequence will gather around the shelves, and wipe the length of wire rope, wire rope stored in dry place to prevent corrosion.
2 year deal at least four times a gourd maintenance treatment, such as diesel cleaning parts, and calcium-based grease lubrication.
3, when the internal movement poured into the mud, cement or other dirt, use a rinse, then clean diesel; cleaning, dry calcium-based grease on the grease; finally release the jaws,wire rope winch wipe with a clean cotton pliers mouth of grease and moisture.
4, when the jaws wear, carrying capacity is less than 80% of rated load, replace the jaw; when the wire rope diameter is reduced 10%, the rope should be replaced
Proof chain hoists maintenance skills
Proof chain hoists as a variety of flammable and explosive environments more specific proof of a lifting tool, its daily maintenance and maintenance are particularly important:
1), the proof chain block and driving after use, should pay attention to clean hoists and monorail car explosion dust on some miscellaneous debris, and promptly coated with anti-rust oil, stored in a dry place to prevent rust and corrosion from moisture .
2), the daily checks and more should pay attention to maintenance, maintenance and repair should be familiar with chain hoists and driving agency personnel, non-performance of the machine do not understand the principle of free disassembly. Cleaned with kerosene or other media-proof chain hoists and other mechanical parts, gears and bearings in the rotation or friction parts, filling grease lubrication.
3), the assembly, the proof manual hoist lifting around sprocket roller bearings, can adhere to the butter has been pressed lifting sprocket mounted on the inner ring of the bearing journal, and then into the wall of the bearing outer ring inside.
4), proof chain hoists brake friction surfaces must be kept clean. Brake parts should be inspected regularly to prevent brake failure occurred weights from falling accidents.
5), the installation brake parts, pay attention with the pawl ratchet pawls engage alveolar good spring pawl control should be flexible and reliable, installed after the chain started, bracelet wheel clockwise, it will be a ratchet, pressed on the brake friction plate seat,wire rope winch counterclockwise rotation bracelet wheel, ratchet gap should be left between the friction plate.
6), and explosion-proof chain hoists TROLLEYS (small car) After cleaning and maintenance after the load test should be carried out and glide down experiments confirmed working, reliable braking before delivery.
1), the proof chain block and driving after use, should pay attention to clean hoists and monorail car explosion dust on some miscellaneous debris, and promptly coated with anti-rust oil, stored in a dry place to prevent rust and corrosion from moisture .
2), the daily checks and more should pay attention to maintenance, maintenance and repair should be familiar with chain hoists and driving agency personnel, non-performance of the machine do not understand the principle of free disassembly. Cleaned with kerosene or other media-proof chain hoists and other mechanical parts, gears and bearings in the rotation or friction parts, filling grease lubrication.
3), the assembly, the proof manual hoist lifting around sprocket roller bearings, can adhere to the butter has been pressed lifting sprocket mounted on the inner ring of the bearing journal, and then into the wall of the bearing outer ring inside.
4), proof chain hoists brake friction surfaces must be kept clean. Brake parts should be inspected regularly to prevent brake failure occurred weights from falling accidents.
5), the installation brake parts, pay attention with the pawl ratchet pawls engage alveolar good spring pawl control should be flexible and reliable, installed after the chain started, bracelet wheel clockwise, it will be a ratchet, pressed on the brake friction plate seat,wire rope winch counterclockwise rotation bracelet wheel, ratchet gap should be left between the friction plate.
6), and explosion-proof chain hoists TROLLEYS (small car) After cleaning and maintenance after the load test should be carried out and glide down experiments confirmed working, reliable braking before delivery.
2013年8月26日星期一
Explosion-proof electric hoist technology special requirements
Explosion-proof electric hoist function is mainly determined by its material, the use of special areas,wire rope winch such as the selection of the equipment itself has many special requirements, but the selection of only one hand, explosion-proof hoist functions in the technical aspects also have special requirements, the following for you to explain:
1, in order to prevent collisions due to mechanical friction or sparks, explosion-proof electric hoist limiting bare some technical measures should be taken, wire rope reel involvement with electric hoist line speed and sports car on the track running speed not greater than 25m/min.
2, for explosion-proof hoist rope part should face no broken wire, wire rope should be reliable lubrication of measures to reduce the wire rope and reel, guide rope and pulley friction between the components.
3, explosion-proof electric hoist orbit joints should be smooth,lever hoist flat, coupe in the operation should be no impact or obstruction.
4, to ensure proof hoist car braking stability and prevent skidding.
5, if there are two or more tracks running simultaneously hoist explosion, shock absorbing device should be fortified. The material for cushioning device while there are strict requirements, shall be non-metallic materials, the surface resistivity not greater than 10.
6, when the explosion-proof electric hoist a barrier metal working environment is large, hoist hook to avoid collision with the metal barrier, should be marked on the outer side of the hook pulley warning label.
Explosion-proof electric hoist on technical aspects of the special requirements introduced this remind you purchase proof electric hoist should explain your use of premises and areas,hoist equipment to facilitate sales staff to recommend a suitable proof grade.
1, in order to prevent collisions due to mechanical friction or sparks, explosion-proof electric hoist limiting bare some technical measures should be taken, wire rope reel involvement with electric hoist line speed and sports car on the track running speed not greater than 25m/min.
2, for explosion-proof hoist rope part should face no broken wire, wire rope should be reliable lubrication of measures to reduce the wire rope and reel, guide rope and pulley friction between the components.
3, explosion-proof electric hoist orbit joints should be smooth,lever hoist flat, coupe in the operation should be no impact or obstruction.
4, to ensure proof hoist car braking stability and prevent skidding.
5, if there are two or more tracks running simultaneously hoist explosion, shock absorbing device should be fortified. The material for cushioning device while there are strict requirements, shall be non-metallic materials, the surface resistivity not greater than 10.
6, when the explosion-proof electric hoist a barrier metal working environment is large, hoist hook to avoid collision with the metal barrier, should be marked on the outer side of the hook pulley warning label.
Explosion-proof electric hoist on technical aspects of the special requirements introduced this remind you purchase proof electric hoist should explain your use of premises and areas,hoist equipment to facilitate sales staff to recommend a suitable proof grade.
Chain hoist how to adjust the friction clutch
Adjust friction clutch chain hoist use professional testing equipment to measure the friction torque.hoist equipment The use of on-site maintenance, you can only rely on inspection and operational test to complete the following steps:
1, the upper and lower lid and the need to remove the gear box front cover;
2, the locking washer insurance cleat open, and remove the need to adjust the nut, remove the pressure ring disc spring seat and the platen.
3, the outer friction plate without damage or serious damage, the dirt is left in the top.
4, after removing the clutch gear while checking internal friction plate is broken or badly worn, whether the above dirt.
5, clean friction plate, the dried and polished with gauze Replace.
6, try hanging nut after adjustment is required to the amount set out together from half to 25% overload,wire rope winch followed by tightening the adjusting nut, lifting sensitive operation freely, to reach 1.3 to 1.6 times the amount set out above start to slip.
7, in the no-load lifting process required to hook hit the block hit hard rubber case, when the chain hoist motors continue to run while the hook does not move did not hear any sound, indicating that the protective effect safety clutch, and then semi geese lifting load test to the limit position clutch slip, the amount required test load, containing 25 percent since, after less than three trials before the lock washer insurance cleat locked,manual block and the need to slow down cover installed after adjusting friction clutch.
1, the upper and lower lid and the need to remove the gear box front cover;
2, the locking washer insurance cleat open, and remove the need to adjust the nut, remove the pressure ring disc spring seat and the platen.
3, the outer friction plate without damage or serious damage, the dirt is left in the top.
4, after removing the clutch gear while checking internal friction plate is broken or badly worn, whether the above dirt.
5, clean friction plate, the dried and polished with gauze Replace.
6, try hanging nut after adjustment is required to the amount set out together from half to 25% overload,wire rope winch followed by tightening the adjusting nut, lifting sensitive operation freely, to reach 1.3 to 1.6 times the amount set out above start to slip.
7, in the no-load lifting process required to hook hit the block hit hard rubber case, when the chain hoist motors continue to run while the hook does not move did not hear any sound, indicating that the protective effect safety clutch, and then semi geese lifting load test to the limit position clutch slip, the amount required test load, containing 25 percent since, after less than three trials before the lock washer insurance cleat locked,manual block and the need to slow down cover installed after adjusting friction clutch.
2013年8月23日星期五
Affect the price of the main factors hoist
In recent years, the rapid development of electric hoist enterprises to major hoist increasingly fierce competition between companies,wire rope winch faced with a variety of model specifications on the market of electric hoist, the same products in the price is also quite different, then what factors electric hoist price differences, the following according to the current market situation, summed up the following for your reference:
First; accompanied by the development of technology, new products, new technology is always the pursuit of each enterprise, in order to improve their own strength, electric hoist update production equipment is essential, vigorously develop new electric hoist, thus increasing the cost of production inputs, which are electric hoist prices an important factor.
Secondly; With the steel market prices continue to rise,load chain a direct result of the rise in raw material hoist, electric hoist resulting price increase.
Finally; lifting an increasingly competitive industry, electric hoist manufacturers endless enterprises to ensure the quality of the premise, to provide quality services, to a certain extent, also the electric hoist prices growth.
The above three points are rigid hoist the main factor prices, once again reminded the majority of new and old customers to buy other small electric hoist lifting equipment when not too much emphasis on price,chain block product quality is one of the fundamental safety.
First; accompanied by the development of technology, new products, new technology is always the pursuit of each enterprise, in order to improve their own strength, electric hoist update production equipment is essential, vigorously develop new electric hoist, thus increasing the cost of production inputs, which are electric hoist prices an important factor.
Secondly; With the steel market prices continue to rise,load chain a direct result of the rise in raw material hoist, electric hoist resulting price increase.
Finally; lifting an increasingly competitive industry, electric hoist manufacturers endless enterprises to ensure the quality of the premise, to provide quality services, to a certain extent, also the electric hoist prices growth.
The above three points are rigid hoist the main factor prices, once again reminded the majority of new and old customers to buy other small electric hoist lifting equipment when not too much emphasis on price,chain block product quality is one of the fundamental safety.
Fans hoist bucket chain positioning mechanism
Wind turbine that is dedicated
wire rope hoist electric hoist, electric hoist with its unique and innovative wind turbine is designed to meet the needs of the wind power industry, here to introduce you to an important part of the fan hoist bucket chain positioning mechanism.
Wind power electric hoist bucket chain positioning mechanism to solve the prior art bucket easy tilt and other technical issues. Including setting up in the chain between the bucket and hoist bucket chain and can be fixed at the bottom of the fixed ramp hoist structure,wire rope winch electric hoist chain be able to access bucket chain. The positioning mechanism further includes a fixed structure or between the bucket and chain electric hoist and chain bucket bucket chain between and can prevent lateral tilting at work limit structure.
Fans hoist bucket chain positioning mechanism of the main features:
A simple structure, reasonable design, can effectively avoid the chain out of the bucket chain process, due to the uneven distribution chain bucket chain orientation caused the phenomenon.
2, improve job stability electric lift hoist, chain bucket can effectively avoid the occurrence of tilt, ensuring smooth out the chain bucket chain.
3, bucket positioning solid, reliable, and easy to implement.
Wind power electric hoist bucket chain positioning mechanism to solve the prior art bucket easy tilt and other technical issues. Including setting up in the chain between the bucket and hoist bucket chain and can be fixed at the bottom of the fixed ramp hoist structure,wire rope winch electric hoist chain be able to access bucket chain. The positioning mechanism further includes a fixed structure or between the bucket and chain electric hoist and chain bucket bucket chain between and can prevent lateral tilting at work limit structure.
Fans hoist bucket chain positioning mechanism of the main features:
A simple structure, reasonable design, can effectively avoid the chain out of the bucket chain process, due to the uneven distribution chain bucket chain orientation caused the phenomenon.
2, improve job stability electric lift hoist, chain bucket can effectively avoid the occurrence of tilt, ensuring smooth out the chain bucket chain.
3, bucket positioning solid, reliable, and easy to implement.
Electric hoist in high-tech applications
With technology innovation,lever hoist electric hoist industry gradually improve and develop high-tech crane also been presented in the following for you to do the following detailed infrared emission electric hoist anti stayed sensor is how it works:
Infrared emission electric hoist anti stayed sensors, infrared emission electric hoist anti stayed sensors have small, compact, sensitive, reliable, easy to install, fast, easy adjustment, saving time and labor advantages. It electrical roll cover, characterized in that:hoist and trolley the left and right ends of the roll cover fixed to a sensor, on the end face of the columnar body has the depth of the groove, groove depth of the cavity in which are inserted two pairs of transmit and receive infrared diode, external circuit through a wire connected to the center of the depth of the groove is formed with a window on the outer wall holder with the key groove of the plunger with the sliding rod is equipped with a spring plunger insertion end and a through hole depth of the groove center position of the window,wire rope winch no signal passes the closed state, the front end opened holder on the outside of the wire hole, two card holder rear end plate, with the groove on the cylinder assembly, plunger put inside the housing.
2013年8月21日星期三
Chain hoists accident prevention
chain Block consequences of the accident, personal injury, equipment, facilities, damage to the degree of risk hazard class II critical preventive measures
1 work should concentrate, to observe, to rational operator;
2 before each use to make the necessary checks;
3 chain hoists are complete and secure;
4 seriously study the working principle of chain hoists and handling precautions;
5 using chain hoists lifting when setting the necessary precautions around;
6 immediately after use equipment maintenance,wire rope winch stored in a dry place to prevent moisture rust and corrosion;
7 do not know who banned performance lift hoist s free disassembly;
8 brake friction surfaces must be kept clean;
1 work should concentrate, to observe, to rational operator;
2 before each use to make the necessary checks;
3 chain hoists are complete and secure;
4 seriously study the working principle of chain hoists and handling precautions;
5 using chain hoists lifting when setting the necessary precautions around;
6 immediately after use equipment maintenance,wire rope winch stored in a dry place to prevent moisture rust and corrosion;
7 do not know who banned performance lift hoist s free disassembly;
8 brake friction surfaces must be kept clean;
Import and export of electric hoist characteristics showing
Electric hoist and other lifting machinery import and export still advocate, currently has a number of crane base,wire rope winch technological innovation and strong export main force. These companies have their own brand products, after years of development, has gradually emerged in the international market, the current situation hoist and other machinery exports showed the following characteristics:
1 exporting state enterprises decentralized management can not be ignored, most enterprises have business instability, inefficient and unable to carry out service and other operating defects. Few export enterprises in the international market also taken unfair competition "Made in China" products cause adverse effects. Since electric hoist and other lifting machinery and equipment import and export urgent need to establish after-sales service system, and in the course of personal safety factors involved, we recommend that an appropriate increase in import and export enterprises barriers to entry.
2 electric hoist lifting machinery manufacturers of spare parts for global sourcing. At present,lever hoist China spare parts industry is still unable to meet the needs of machine manufacturers, especially in the engine, hydraulic systems and other core parts and components. Therefore, some companies have financial strength to recognize their lack of original supply chain, and actively with international top parts suppliers to cooperate to achieve the overall use of global sourcing to enhance the quality, to seize the international market share.
3 electric hoist crane substantial growth in exports to emerging markets. In the world economy is not stable, the majority of developing countries, the situation is not bad, Chinese engineers and crane products are relatively low grade, high cost, have a good market in developing countries is reflected in China to Russia and other CIS countries, Africa and other developing regions of ASEAN's exports is still rapid growth.
4 electric hoist lifting the fifth consecutive year export growth rate higher than the growth rate of export of electromechanical products.hoist and trolley Most export products with our own brand and price competitive advantage by national policy support, so construction and agricultural machinery with export base and high growth potential.
1 exporting state enterprises decentralized management can not be ignored, most enterprises have business instability, inefficient and unable to carry out service and other operating defects. Few export enterprises in the international market also taken unfair competition "Made in China" products cause adverse effects. Since electric hoist and other lifting machinery and equipment import and export urgent need to establish after-sales service system, and in the course of personal safety factors involved, we recommend that an appropriate increase in import and export enterprises barriers to entry.
2 electric hoist lifting machinery manufacturers of spare parts for global sourcing. At present,lever hoist China spare parts industry is still unable to meet the needs of machine manufacturers, especially in the engine, hydraulic systems and other core parts and components. Therefore, some companies have financial strength to recognize their lack of original supply chain, and actively with international top parts suppliers to cooperate to achieve the overall use of global sourcing to enhance the quality, to seize the international market share.
3 electric hoist crane substantial growth in exports to emerging markets. In the world economy is not stable, the majority of developing countries, the situation is not bad, Chinese engineers and crane products are relatively low grade, high cost, have a good market in developing countries is reflected in China to Russia and other CIS countries, Africa and other developing regions of ASEAN's exports is still rapid growth.
4 electric hoist lifting the fifth consecutive year export growth rate higher than the growth rate of export of electromechanical products.hoist and trolley Most export products with our own brand and price competitive advantage by national policy support, so construction and agricultural machinery with export base and high growth potential.
Electric hoist to meet special requirements of industrial production
Currently, many electric hoist brands,hoist equipment can fully meet the needs of lifting industry characteristics are not many products, mainly because of the particularity of the crane, electric hoist must have some special properties:
A fast dynamic response, dramatic changes in order to meet the needs of the crane load.
2, can withstand dramatic changes due to potential energy load that appears in the current impact and ensure continuous reliable operation of mechanical vibration environments.
3, the deceleration of the motor can be reliably released renewable energy, as the current capacity of the braking unit must be greater.
4, with high reliability protection system for wire rope winch mechanism, need special attention mechanical brake is released before or after the moment of brake to prevent the "slip hook" of the control.
5, with a powerful monitoring system, through the monitoring of implementation of various parameters of the system failure alarm and failure analysis.
With the continuous development of inverter technology, electric hoist performance and increasing the mechanical properties of hard-frequency control, speed range, speed and high precision,manual hoist good stability, easy to control and energy-saving features, can well meet the lifting equipment safe and stable, reliable, good operability reliable, maintenance requirements, rapid breakthrough in the crane industry and widely used.
A fast dynamic response, dramatic changes in order to meet the needs of the crane load.
2, can withstand dramatic changes due to potential energy load that appears in the current impact and ensure continuous reliable operation of mechanical vibration environments.
3, the deceleration of the motor can be reliably released renewable energy, as the current capacity of the braking unit must be greater.
4, with high reliability protection system for wire rope winch mechanism, need special attention mechanical brake is released before or after the moment of brake to prevent the "slip hook" of the control.
5, with a powerful monitoring system, through the monitoring of implementation of various parameters of the system failure alarm and failure analysis.
With the continuous development of inverter technology, electric hoist performance and increasing the mechanical properties of hard-frequency control, speed range, speed and high precision,manual hoist good stability, easy to control and energy-saving features, can well meet the lifting equipment safe and stable, reliable, good operability reliable, maintenance requirements, rapid breakthrough in the crane industry and widely used.
2013年8月19日星期一
Electric hoist crane safety devices
Electric
lift hoist crane because of its simple structure, easy operation, low cost, machinery, chemicals, light industry, railways and other industries widely used. Because of this special cranes, ground operations often a person several roles, and also served as operations, company search, command tasks, there are many unsafe operating risks.
In order to prevent the occurrence of this type of crane lifting injuries, GB6067-1985 "crane safety regulations" and other relevant national standards have to be electric hoist crane must have safety devices, such as limit switch, end stop, bumpers, safety braking devices. These security guards equipped to effectively improve the safety and reliability of electric hoist crane, but because of the design, manufacturing defect itself a variety of reasons, the current electric hoist crane inadequate security measures, according to the daily inspection experience found hoist crane in the wrong phase-phase protection, anti-broken shaft protection against electric manual hoist fall protection, buffer settings, etc. are still flawed or inadequate.
Since using the three-phase asynchronous electric hoist crane conical brake motor as power plant, while the three-phase asynchronous motor rotation direction and the power supply phase sequence, and when the power supply phase sequence is changed, the motor rotation direction and the direction of the original operation Instead, press "down" button, spreader rise, and rise to the limit position limiter does not work, likely to cause accidents. Every year, this type of crane caused due to wrong phase crushed reel, hook group extrusion, wire rope pull off the accident. At present, China produced and widely used CD, MD electric hoist did not take the wrong phase-phase protection measures. To prevent the wrong phase injury accidents caused by lifting,wire rope winch electric hoist crane electrical control system added wrong phase-phase protection.
In order to prevent the occurrence of this type of crane lifting injuries, GB6067-1985 "crane safety regulations" and other relevant national standards have to be electric hoist crane must have safety devices, such as limit switch, end stop, bumpers, safety braking devices. These security guards equipped to effectively improve the safety and reliability of electric hoist crane, but because of the design, manufacturing defect itself a variety of reasons, the current electric hoist crane inadequate security measures, according to the daily inspection experience found hoist crane in the wrong phase-phase protection, anti-broken shaft protection against electric manual hoist fall protection, buffer settings, etc. are still flawed or inadequate.
Since using the three-phase asynchronous electric hoist crane conical brake motor as power plant, while the three-phase asynchronous motor rotation direction and the power supply phase sequence, and when the power supply phase sequence is changed, the motor rotation direction and the direction of the original operation Instead, press "down" button, spreader rise, and rise to the limit position limiter does not work, likely to cause accidents. Every year, this type of crane caused due to wrong phase crushed reel, hook group extrusion, wire rope pull off the accident. At present, China produced and widely used CD, MD electric hoist did not take the wrong phase-phase protection measures. To prevent the wrong phase injury accidents caused by lifting,wire rope winch electric hoist crane electrical control system added wrong phase-phase protection.
The future of domestic wire rope hoist
(1) wire rope hoist shape design
Change the traditional circular design, a square structure, the modular design, increasing the versatility of components, from the original arrangement of the motor of an intermediate shaft in the form of a gear of the rolls, the rolls instead of motor-reducer The arrangement not only conducive to effectively improve electric hoist and trolley lifting height, and avoid high-speed shaft axis drive, can improve the smooth running and reliability, reduce manufacturing costs. Increase the magnification range of pulleys, improve range of stand-alone use.
(2) wire rope hoist motor
Using 2,4,6-pole conical rotor motor for a variety of different conditions. Motor insulation class F class and should be raised to 11, protection class increased to IP54; motor overheat protection device settings; motor should be designed effectively improve the useful power,wire rope winch buck ability and starting and braking capabilities; improve motor design temperature, give full play to the potential of the motor; motor noise in addition to the design, processing, manufacturing to improve accuracy, it should also be considered from the design to reduce electromagnetic noise and wind noise channel eddy current measures.
(3) Series is designed to rationalize
Recommended parameters: Capacity from 0.25-80t, lifting height 6-63m, with fewer base model covering the entire series. Lifting speed diversification Recommended values: single speed 8m/min, 10m/rain, 12.5m/min; dual-speed 1/10, 1/3, 1/4 ratio change. Two-speed programs should take picture machine, double windings and pole type, or using frequency conversion stepless speed technologies. Design reference GB3811-1983 "Crane design specifications" working-level division, working-level coverage will be expanded to M3-M6.
(4) using high-quality high-strength steel wire rope
According to GB3811-1983 standard, to meet the safety factor of the tensile strength of the premise, to minimize the wire diameter, the use of roll diameter adapted to the diameter of the rope and pulley ratio to the ratio of the diameter of wire diameter in order to facilitate the entire narrow machine structure and weight.
(5) Optimized gear designed to enhance the carrying capacity of the gear
Gear can be 40Cr or 42CrMn, 40MnB material, quenched and hardened or nitrided, the original material used 20CrMnTi or 20MnTiB Although the flexural strength of the gear and the contact strength than ideal, but affected by domestic processing level based, gear low precision,manual hoist carburizing quenching deformation difficult to control, after the sequence nor grinding process, it is inevitable there is gear noise, low efficiency. New materials and heat treatment method has many domestic manufacturers to promote.
(6) Electrical protective measures to increase wire rope hoist
In addition to the upper and lower limit protection, it should also increase the overload protection; wrong phase, phase, voltage protection; hook retaining rope protection. Development of multi-function models such as brake: Dual brake (brake wheel motor brake + high cone axis compensation braking); three brake (brake wheel brake cone axis compensation brake + + high volume cylinder safety gates). According to user needs increased lifting height, load digital display o.
Change the traditional circular design, a square structure, the modular design, increasing the versatility of components, from the original arrangement of the motor of an intermediate shaft in the form of a gear of the rolls, the rolls instead of motor-reducer The arrangement not only conducive to effectively improve electric hoist and trolley lifting height, and avoid high-speed shaft axis drive, can improve the smooth running and reliability, reduce manufacturing costs. Increase the magnification range of pulleys, improve range of stand-alone use.
(2) wire rope hoist motor
Using 2,4,6-pole conical rotor motor for a variety of different conditions. Motor insulation class F class and should be raised to 11, protection class increased to IP54; motor overheat protection device settings; motor should be designed effectively improve the useful power,wire rope winch buck ability and starting and braking capabilities; improve motor design temperature, give full play to the potential of the motor; motor noise in addition to the design, processing, manufacturing to improve accuracy, it should also be considered from the design to reduce electromagnetic noise and wind noise channel eddy current measures.
(3) Series is designed to rationalize
Recommended parameters: Capacity from 0.25-80t, lifting height 6-63m, with fewer base model covering the entire series. Lifting speed diversification Recommended values: single speed 8m/min, 10m/rain, 12.5m/min; dual-speed 1/10, 1/3, 1/4 ratio change. Two-speed programs should take picture machine, double windings and pole type, or using frequency conversion stepless speed technologies. Design reference GB3811-1983 "Crane design specifications" working-level division, working-level coverage will be expanded to M3-M6.
(4) using high-quality high-strength steel wire rope
According to GB3811-1983 standard, to meet the safety factor of the tensile strength of the premise, to minimize the wire diameter, the use of roll diameter adapted to the diameter of the rope and pulley ratio to the ratio of the diameter of wire diameter in order to facilitate the entire narrow machine structure and weight.
(5) Optimized gear designed to enhance the carrying capacity of the gear
Gear can be 40Cr or 42CrMn, 40MnB material, quenched and hardened or nitrided, the original material used 20CrMnTi or 20MnTiB Although the flexural strength of the gear and the contact strength than ideal, but affected by domestic processing level based, gear low precision,manual hoist carburizing quenching deformation difficult to control, after the sequence nor grinding process, it is inevitable there is gear noise, low efficiency. New materials and heat treatment method has many domestic manufacturers to promote.
(6) Electrical protective measures to increase wire rope hoist
In addition to the upper and lower limit protection, it should also increase the overload protection; wrong phase, phase, voltage protection; hook retaining rope protection. Development of multi-function models such as brake: Dual brake (brake wheel motor brake + high cone axis compensation braking); three brake (brake wheel brake cone axis compensation brake + + high volume cylinder safety gates). According to user needs increased lifting height, load digital display o.
2013年8月16日星期五
Miniature, electric chain hoist operation details
Mini electric hoist especially for households with high-rise buildings can be easily lifted from the downstairs heavier daily, and for a variety of occasions, small pieces of crane unloading cargo. Simple structure,hoist and trolley easy installation, small size, and single-phase power as a power source, uses a very wide range of this new electric hoists are widely used in machinery manufacturing, electronics, automotive, shipbuilding, workpiece assembly and high-tech industrial zone and other modern industrial production line , assembly line, assembly, logistics, transportation and other occasions. In warehouses, docks, ingredients, hanging baskets and small work space narrower space operations, can show its good quality. Is a fixed column, wall-mounted jib crane best accessory products.
Electric wire rope hoist with a compact, light weight, small size, easy to operate. Can be installed separately word overhead beam can also be installed in electric or manual single-beam, dual-beam, cantilever, gantry cranes and other use.
Electric hoist characteristics: high performance electric hoist, stamping steel shell, lightweight and sturdy.wire rope winch High-strength safety hook to withstand impact of accidental overload fracture does not occur, but the gradual deformation. Limit switch: limit switch hanging under the hanging device, the motor automatically stops to prevent the chain beyond, to ensure safety. Lightweight, attractive and durable molded chain bag. Limit switch: limit switch hanging under the hanging device, the motor automatically stops to prevent the chain beyond, to ensure safety. Reverse phase protection devices: special electrical wiring, when the power connection error, the control circuit is inoperative.
Electric chain hoist operation test before use:
(A) does pressing button switch "down" button, the operation gourd hanging down until the limit switches, at which point the motor will stop automatically.
(B) does the press button switch is "on" button until the chain is completely retracted into the chain bag, and the motor stops.
(C) Check the lifting chain lubrication oil of any ready-made lifting chain lubrication can be used, we recommend that you maintain a small amount of lubricating the chain bag, so that the chain can be immersed in the lubricating oil.
(D) When the host of the number of pairs of chain hanging chain or chain,manual block is strictly prohibited under the hook from the chain will flip to avoid hazard.
(E) Check the chain orientation purposes, all welding points should be in the same direction, only the chain at all welding points are in the same line, the operation determined to completely positive.
2013年8月14日星期三
Hoist has the following advantages
Hoist has the following advantages:
1 freedom of movement Lightweight & compact design.
(2) When rope touches the limit arm, automatic stop upgrading.
3 rope anti-spin, the sensor arm brake motors.
4 static and dynamic load sharing activity time setting.
5 Household power supply can operate.
6-pin socket and so handy.
7 lock with safety hook hook pad 360 universal connector.
8 built-in safety features winch, freely control upgrade for warehouses, storage areas, housing areas,manual hoist built special that, workplaces and light manufacturing.
Hoist installation: single beam, bridge cranes, gantry cranes, suspension cranes. Take along additional transformation can also be used as a winch, so it is, is to improve labor efficiency, improve working conditions necessary machinery .
Product Features: light weight,chain block small size, compact structure, varieties and specifications, smooth operation, simple operation, easy to use. They can be done in the same plane straight, curved, circular overhead track, you can also track with electric single beam of grain, manual single beam, bridge, suspension, cantilever, gantry cranes and other use .
Hoist is widely used in factories, warehouses, docks, power plants, sawmill and other occasions,wire rope winch is lifting moving goods, the best lifting equipment.
1 freedom of movement Lightweight & compact design.
(2) When rope touches the limit arm, automatic stop upgrading.
3 rope anti-spin, the sensor arm brake motors.
4 static and dynamic load sharing activity time setting.
5 Household power supply can operate.
6-pin socket and so handy.
7 lock with safety hook hook pad 360 universal connector.
8 built-in safety features winch, freely control upgrade for warehouses, storage areas, housing areas,manual hoist built special that, workplaces and light manufacturing.
Hoist installation: single beam, bridge cranes, gantry cranes, suspension cranes. Take along additional transformation can also be used as a winch, so it is, is to improve labor efficiency, improve working conditions necessary machinery .
Product Features: light weight,chain block small size, compact structure, varieties and specifications, smooth operation, simple operation, easy to use. They can be done in the same plane straight, curved, circular overhead track, you can also track with electric single beam of grain, manual single beam, bridge, suspension, cantilever, gantry cranes and other use .
Hoist is widely used in factories, warehouses, docks, power plants, sawmill and other occasions,wire rope winch is lifting moving goods, the best lifting equipment.
Lifting Accident Analysis
Crane accidents caused mainly operational factors, equipment and environmental factors.
1 · Operation main factors:
(A) lifting improper manner, resulting bundle is not strong decoupling, lifting objects scattered or swinging wounding;
(2) violation of rules,manual block such as overloading of lifting, work and other people in danger zones caused casualties and damage to the equipment, as well as because drivers do not require the use of weight limit, limit, brakes or do not follow the homing, anchor be caused by overloading, over winch, derailed, tipping and other accidents;
(3) improper command, incoordination caused by the collision.
2 · Equipment main factors:
(1) spreader failure, such as a hook, grab, rope, nets and other damage caused by heavy objects falling;
(2) lifting equipment control system malfunction or failure of safety devices and cause an accident,hoist equipment such as brake failure caused by heavy impact and pinching;
(3) members strong enough lead to accidents, such as tower cranes dumping, the reason is tilting tower Ao Lu torque exceeds the stabilizing moment due;
(4) electrical damage caused by electric shock;
(5) due to gnaw rails, super wear, or bent derailments caused by overhead cranes and so on.
3 * Environmental factors are:
(1) due to lightning, wind gusts, tornadoes, typhoons, earthquakes and other natural disasters caused by strong derailed, collapsed, tipping and other equipment accidents;
(2) Due to space congestion,wire rope winch clutter caused by collision, extrusion accidents.
1 · Operation main factors:
(A) lifting improper manner, resulting bundle is not strong decoupling, lifting objects scattered or swinging wounding;
(2) violation of rules,manual block such as overloading of lifting, work and other people in danger zones caused casualties and damage to the equipment, as well as because drivers do not require the use of weight limit, limit, brakes or do not follow the homing, anchor be caused by overloading, over winch, derailed, tipping and other accidents;
(3) improper command, incoordination caused by the collision.
2 · Equipment main factors:
(1) spreader failure, such as a hook, grab, rope, nets and other damage caused by heavy objects falling;
(2) lifting equipment control system malfunction or failure of safety devices and cause an accident,hoist equipment such as brake failure caused by heavy impact and pinching;
(3) members strong enough lead to accidents, such as tower cranes dumping, the reason is tilting tower Ao Lu torque exceeds the stabilizing moment due;
(4) electrical damage caused by electric shock;
(5) due to gnaw rails, super wear, or bent derailments caused by overhead cranes and so on.
3 * Environmental factors are:
(1) due to lightning, wind gusts, tornadoes, typhoons, earthquakes and other natural disasters caused by strong derailed, collapsed, tipping and other equipment accidents;
(2) Due to space congestion,wire rope winch clutter caused by collision, extrusion accidents.
Lifting equipment management system
Article: should be installed in a variety of cranes, indicating signs of mechanical properties and, if necessary install winch limiter, load controllers, interlock switches and other devices, rail-mounted crane shall be placed walking and rail clamp stopper ,hoist equipment try hanging should be checked before use.
Article II: wire rope on the drum must be arranged in neat rows, tail cards firmly keep working at least three times or more.
Article: Do not arbitrarily change the crane's performance.
Article IV: operations personnel to obey the command signal, the signal is unknown or is likely to cause an accident should be suspended operations.
Article V: lifting, lifting objects shall not someone to stay and walk.
Article VI: lifting objects should pull the rope slipped, the speed should be uniform, stable and prevention of sudden braking and changes of direction, lifting objects, should be more than 0.5 meters above the barrier, falling should be low light, to prevent dumping.
Article VII: When lifting objects is prohibited to stand on the object.
Article VIII: establish sound crane maintenance,manual hoist periodic inspection, safe operating system, and education-related personnel to seriously implemented.
Article IX: bridge crane shall be provided chauffeur-driven, a person responsible hooks and directing (the need for operating permits). Driving without a license is strictly prohibited and conductor.
Article: crane workplace have sufficient lighting and smooth lifting channels. Prohibited from hanging objects across the top of the head.
Article 11:wire rope winch The crane was part of maximum weight indicated is prohibited overload.
Article 12: The crane work, the prohibition down personnel are not allowed to engage in maintenance work, banned from a crane over to another crane up. In addition to parking maintenance is prohibited to leave the track
Article II: wire rope on the drum must be arranged in neat rows, tail cards firmly keep working at least three times or more.
Article: Do not arbitrarily change the crane's performance.
Article IV: operations personnel to obey the command signal, the signal is unknown or is likely to cause an accident should be suspended operations.
Article V: lifting, lifting objects shall not someone to stay and walk.
Article VI: lifting objects should pull the rope slipped, the speed should be uniform, stable and prevention of sudden braking and changes of direction, lifting objects, should be more than 0.5 meters above the barrier, falling should be low light, to prevent dumping.
Article VII: When lifting objects is prohibited to stand on the object.
Article VIII: establish sound crane maintenance,manual hoist periodic inspection, safe operating system, and education-related personnel to seriously implemented.
Article IX: bridge crane shall be provided chauffeur-driven, a person responsible hooks and directing (the need for operating permits). Driving without a license is strictly prohibited and conductor.
Article: crane workplace have sufficient lighting and smooth lifting channels. Prohibited from hanging objects across the top of the head.
Article 11:wire rope winch The crane was part of maximum weight indicated is prohibited overload.
Article 12: The crane work, the prohibition down personnel are not allowed to engage in maintenance work, banned from a crane over to another crane up. In addition to parking maintenance is prohibited to leave the track
Lifting operations precautions and requirements
1, lifting operations must hold special operating permit. Total is greater than 10 tons lifting objects, must apply for "lifting safe operating certificate";
2, lifting the total is greater than 40 tons of objects and works of the main structure, shall prepare lifting construction program. Hanging objects having less than 40 tons,chain block but in complex shape, stiffness is small, large aspect ratio, precision precious, construction conditions special case, Erection plan shall be prepared by the construction authorities and security technology sector review, reported supervisor or Chief Engineer approval before implementation;
3, before performing a variety of lifting operations, should be pre-set security guard at the scene hoisting flags and let someone care, non-construction workers allowed to enter;
4, lifting operations, the night should have adequate lighting, outdoor work encounter snow, rain, fog and winds above 6, you should stop work;
5, lifting operating personnel must be properly dressed labor supplies, wearing helmets shall comply with the provisions of GB2811, HG23014 height operation must comply with the requirements;
6, before lifting operations, respond to lifting equipment,manual hoist wire rope, embrace wind rope, chains, hooks, rigging and other equipment checks must ensure safe and reliable, are not allowed to use sick;
7, lifting operations must be a clear division of their duties in accordance with the provisions of GB5082 contact signal, unified command;
8, prohibit the use of pipes, pipe racks, poles, electrical and mechanical equipment hoisting anchor. Without mobility, the construction sector accounted for examination may not be buildings, structures as an anchor;
9, before lifting operations must run a variety of lifting machinery parts, safety equipment and rigging spreader detailed security checks, lifting equipment, safety devices to be sensitive and reliable. Before lifting crane must try to confirm correct before operation;
10, no person shall accompany heavy lifting or hoisting mechanical lift. In exceptional circumstances, must be followed and landing, reliable safety measures should be taken, and after a scene to approval;
11, flare for lifting operations shall comply with the provisions of HG23011. Hoisting ropes hanging job site,wire rope winch embrace wind rope, tow rope, etc. To avoid contact with wires and keep a safe distance;
12, with the stereotypes lifting machinery such as crawler crane trucks, tire cranes, bridge cranes and other lifting operations carried out, in addition to compliance with this standard, we must also comply with the stereotypes mechanical procedures;
13, lifting operations must be carried out according to specified load lifting, lifting, rigging calculated choose to use, non-overloaded. The lifting heavy objects close to or reach the rated lifting capacity, check brakes, with a low height, short stroke trial suspended after a smooth lift;
14, suspended below the non-stop heavy people, traffic and work;
15, the lifting operations must strictly observe the "ten no hanging" provides that: ① command signal is unknown; ② overload or weight of the object is unknown; ③ external oblique pull heavy lifting; ④ insufficient light, strobe, or a workplace shadow; ⑤ to stand under the weight; ⑥ heavy lifting heavy objects buried in the ground or on a leash lashing connect with other pipelines; ⑦ heavy fastening strong, rope knot killed, unqualified; rigging is not complete ; ⑧ edge blade objects without liner measures; ⑨ weight more heads; ⑩ safety device failure.
16, you must press the "lifting safe operating certificate" reported on the contents of the job, is strictly prohibited alter,manual block lend, "hoisting safe operating certificate", change jobs, and expand the range of operations or transfer operations area;
17, incomplete examination and approval procedures for lifting operations, security measures are not implemented, the operating environment does not meet safety requirements, the commanding officers illegal command, the operating personnel the right to refuse the job.
2, lifting the total is greater than 40 tons of objects and works of the main structure, shall prepare lifting construction program. Hanging objects having less than 40 tons,chain block but in complex shape, stiffness is small, large aspect ratio, precision precious, construction conditions special case, Erection plan shall be prepared by the construction authorities and security technology sector review, reported supervisor or Chief Engineer approval before implementation;
3, before performing a variety of lifting operations, should be pre-set security guard at the scene hoisting flags and let someone care, non-construction workers allowed to enter;
4, lifting operations, the night should have adequate lighting, outdoor work encounter snow, rain, fog and winds above 6, you should stop work;
5, lifting operating personnel must be properly dressed labor supplies, wearing helmets shall comply with the provisions of GB2811, HG23014 height operation must comply with the requirements;
6, before lifting operations, respond to lifting equipment,manual hoist wire rope, embrace wind rope, chains, hooks, rigging and other equipment checks must ensure safe and reliable, are not allowed to use sick;
7, lifting operations must be a clear division of their duties in accordance with the provisions of GB5082 contact signal, unified command;
8, prohibit the use of pipes, pipe racks, poles, electrical and mechanical equipment hoisting anchor. Without mobility, the construction sector accounted for examination may not be buildings, structures as an anchor;
9, before lifting operations must run a variety of lifting machinery parts, safety equipment and rigging spreader detailed security checks, lifting equipment, safety devices to be sensitive and reliable. Before lifting crane must try to confirm correct before operation;
10, no person shall accompany heavy lifting or hoisting mechanical lift. In exceptional circumstances, must be followed and landing, reliable safety measures should be taken, and after a scene to approval;
11, flare for lifting operations shall comply with the provisions of HG23011. Hoisting ropes hanging job site,wire rope winch embrace wind rope, tow rope, etc. To avoid contact with wires and keep a safe distance;
12, with the stereotypes lifting machinery such as crawler crane trucks, tire cranes, bridge cranes and other lifting operations carried out, in addition to compliance with this standard, we must also comply with the stereotypes mechanical procedures;
13, lifting operations must be carried out according to specified load lifting, lifting, rigging calculated choose to use, non-overloaded. The lifting heavy objects close to or reach the rated lifting capacity, check brakes, with a low height, short stroke trial suspended after a smooth lift;
14, suspended below the non-stop heavy people, traffic and work;
15, the lifting operations must strictly observe the "ten no hanging" provides that: ① command signal is unknown; ② overload or weight of the object is unknown; ③ external oblique pull heavy lifting; ④ insufficient light, strobe, or a workplace shadow; ⑤ to stand under the weight; ⑥ heavy lifting heavy objects buried in the ground or on a leash lashing connect with other pipelines; ⑦ heavy fastening strong, rope knot killed, unqualified; rigging is not complete ; ⑧ edge blade objects without liner measures; ⑨ weight more heads; ⑩ safety device failure.
16, you must press the "lifting safe operating certificate" reported on the contents of the job, is strictly prohibited alter,manual block lend, "hoisting safe operating certificate", change jobs, and expand the range of operations or transfer operations area;
17, incomplete examination and approval procedures for lifting operations, security measures are not implemented, the operating environment does not meet safety requirements, the commanding officers illegal command, the operating personnel the right to refuse the job.
2013年8月12日星期一
Six technical maintenance lift hoist motor
lift hoist motor is an important part, but also the most expensive parts in winch, if damaged, repair or replacement costs will be very expensive. Remind customers to take good care
hoist equipment es, tips are as follows:
1, the use of the environment should be kept dry, the motor surface should be kept clean, air inlet should not be dust, fibers and other obstacles.
2, when the motor thermal protection succession of action, should identify the fault or from a motor overload protection device or the setting value is too low, eliminating the fault can be put into operation.
3, should ensure that the motor is running good lubrication. General motors running 5000 hours or so, which should supplement or replace the grease is found bearing overheating or running metamorphic lubrication, hydraulic in time for grease. Replace grease should remove the old oil, and gasoline wash bearings and bearing cap tank, then ZL-3 lithium grease fills the cavity between the bearing inner and outer rings 1/2 (for 2-pole) and 2/3 (4,6,8 pole pair).
4, when the end of life of the bearing,wire rope winch vibration and noise motor operation will significantly increase, check the bearing radial clearance reached the following values, which should replace the bearings.
5, disassemble the motor, extending from the shaft end or side rotor can be removed. If you do not need to remove the fan, or removed from the non-drive end rotor is more convenient, out of the rotor from the stator, should prevent damage to the stator windings or insulation.
6, the replacement must write down the winding primary winding form, size and number of turns, wire, etc., when the loss of these data, should be obtained from the manufacturer, free to change the original design of the winding, often made of one or several performance motor deteriorated even not be used.
1, the use of the environment should be kept dry, the motor surface should be kept clean, air inlet should not be dust, fibers and other obstacles.
2, when the motor thermal protection succession of action, should identify the fault or from a motor overload protection device or the setting value is too low, eliminating the fault can be put into operation.
3, should ensure that the motor is running good lubrication. General motors running 5000 hours or so, which should supplement or replace the grease is found bearing overheating or running metamorphic lubrication, hydraulic in time for grease. Replace grease should remove the old oil, and gasoline wash bearings and bearing cap tank, then ZL-3 lithium grease fills the cavity between the bearing inner and outer rings 1/2 (for 2-pole) and 2/3 (4,6,8 pole pair).
4, when the end of life of the bearing,wire rope winch vibration and noise motor operation will significantly increase, check the bearing radial clearance reached the following values, which should replace the bearings.
5, disassemble the motor, extending from the shaft end or side rotor can be removed. If you do not need to remove the fan, or removed from the non-drive end rotor is more convenient, out of the rotor from the stator, should prevent damage to the stator windings or insulation.
6, the replacement must write down the winding primary winding form, size and number of turns, wire, etc., when the loss of these data, should be obtained from the manufacturer, free to change the original design of the winding, often made of one or several performance motor deteriorated even not be used.
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