Three phase electric hoist in the use of safety and technical conditions before checking hook, wire rope,Hoist and trolley reducer and other consumable parts. When in use, prohibit persons from entering the danger zone and sent people hoisting care. three phase electric hoist placed when lifting or bundled items must be standardized in line with lifting requirements, the brakes, the safety device failure, the next hook nut locking device is damaged, rope and other damage to be scrapped prohibited lifting operation. Hanging objects tied, hanging strong or imbalance may slip, not for lifting operations are not padded edges between objects and cheap wire rope hoist.cheap wire rope hoist Unable to see the sites, not for lifting operations suspended matter the situation and command signals. In stoppage or rest, get the hanging objects, hanging baskets, spreader and cable hanging in the air.
plate lifting clamp
2014年9月19日星期五
Three phase cheap wire rope hoist
Three phase electric hoist in the use of safety and technical conditions before checking hook, wire rope,Hoist and trolley reducer and other consumable parts. When in use, prohibit persons from entering the danger zone and sent people hoisting care. three phase electric hoist placed when lifting or bundled items must be standardized in line with lifting requirements, the brakes, the safety device failure, the next hook nut locking device is damaged, rope and other damage to be scrapped prohibited lifting operation. Hanging objects tied, hanging strong or imbalance may slip, not for lifting operations are not padded edges between objects and cheap wire rope hoist.cheap wire rope hoist Unable to see the sites, not for lifting operations suspended matter the situation and command signals. In stoppage or rest, get the hanging objects, hanging baskets, spreader and cable hanging in the air.
2014年1月13日星期一
Electric single-beam bridge crane girder design
A factory workshop and based on the actual need to design a single girder crane with electric hoist, because single Hoist
and trolley bridge crane girder is the main part of the design success or failure of the relationship between single girder bridge crane and security, thus girder design based on customer requirements. For the single girder crane with electric hoist from the customers the basic design parameters required: lifting weight Q = 3 t; Hoisting height H = 5 m; The span length L = 16.5 m. Girder cross section the choice of the form of single beam Manual
block used electric hoist bridge crane beams as orbit of electric hoist, electric hoist running along the beams of the bottom flange. On the premise of meet the strength, stiffness and stability, small span of only a root i-beam girder, used only for lifting is not more than 50 kn, the span is not more than 11 m. To ensure the overall stability of the main girder and improve its stiffness, girder in the end beam should be set up between corner support, when necessary, set the horizontal truss, main girder and end beam welding connection. Main girder of a long-span steel composite beams or steel plates and beams is adopted to form the composite beams. Girder cross section forms in addition to the rolling or welding wide flange beams, other all use with the inside of the inclined flange beams. For large span should also set the level on the catwalk.
2013年8月30日星期五
Wire rope pulling hoist the seven notes
Wire rope pulling hoist is a simple structure, the use of heavy lever handle complete lifting,hoist equipment lowering, pulling, lifting tool calibration and other operations. Wire rope pulling hoist can not only do non-linear traction work, but you can easily select the appropriate cutting operating position, maneuverability and traction from the principals, easy to use. Here to introduce you to the seven wire rope pulling hoist Precautions
One must choose the appropriate size of the load hoist tonnage
2, the housing must be checked prior to use all screws are tight, not loose; toggle lever check whether the action of various normal; when running coordination, no abnormal noise or catching the handle can be pulled loose unloading, penetration wipe clean already supporting rope and wire rope clamp, and then pulled forward or backward Shouben handle,hoist and trolley depending on whether the action is normal.
3, with the provisions of models, specifications of wire rope to hoist securely fixed.
4 operations, other than those allowed by supporting instead of wire rope with rope; operation, the rope should be kept clean to prevent the adhesion of mud and oil into the machine, affecting the normal use or exacerbate clamp wear.
5, no need to increase the use of lubricants
6, shall be arbitrarily extended operating handle; operation should let the rest handle freedom follower, not jamming.
7, in exceptional circumstances, gourds used as loading lift hoist raised, the hoist from the weight should be reduced to nominal weight of 1/3.
One must choose the appropriate size of the load hoist tonnage
2, the housing must be checked prior to use all screws are tight, not loose; toggle lever check whether the action of various normal; when running coordination, no abnormal noise or catching the handle can be pulled loose unloading, penetration wipe clean already supporting rope and wire rope clamp, and then pulled forward or backward Shouben handle,hoist and trolley depending on whether the action is normal.
3, with the provisions of models, specifications of wire rope to hoist securely fixed.
4 operations, other than those allowed by supporting instead of wire rope with rope; operation, the rope should be kept clean to prevent the adhesion of mud and oil into the machine, affecting the normal use or exacerbate clamp wear.
5, no need to increase the use of lubricants
6, shall be arbitrarily extended operating handle; operation should let the rest handle freedom follower, not jamming.
7, in exceptional circumstances, gourds used as loading lift hoist raised, the hoist from the weight should be reduced to nominal weight of 1/3.
What are the characteristics import chain hoists?
Chain hoists divided by origin
Domestic wire rope hoist s, chain hoists;
Divided according to the shape chain hoists
Round chain hoists, chain hoists triangle, K-type chain hoists, chain hoists Ling, V-type chain hoists, T-type chain hoist, mini chain hoists, explosion-proof chain hoists, hand 360 degrees pull hoist and so on.
Import chain hoist six characteristics:
1, the fine structure: the internal structure of the overall fine, simplify; appearance of tiny, innovative and generous. Entire product ergonomic.
2, the optimal gear: the product heart - gear for a more compact high-speed synchronous gear; optimal materials, direct to ensure the whole super-stable product performance,hoist and trolley wear coefficient increased by 1 fold, to meet the long-term overload operation needs.
3, the new hook: hook at the user-friendly design, from whatever direction the goods are not easy to pull decoupling, alloy foot material, thus preventing breakage and loss of material injury.
4, excellent parts: All parts are high quality alloy steel and carefully selected from manufacturers, resolutely eliminate substandard size parts.
5, a special casing:hoist equipment stainless steel pressing cover, light, solid, easy to forge.
6, refining chain: High-strength high-quality chain by experienced workers, 20 step sanding finish; counterparts at the weld is not rough, safe, feel good; medium frequency quenching; burst operation, overload operation, long-term jobs are to ensure that no accident; pull from multiple directions, broader scope; cover rust, used often new.
Domestic wire rope hoist s, chain hoists;
Divided according to the shape chain hoists
Round chain hoists, chain hoists triangle, K-type chain hoists, chain hoists Ling, V-type chain hoists, T-type chain hoist, mini chain hoists, explosion-proof chain hoists, hand 360 degrees pull hoist and so on.
Import chain hoist six characteristics:
1, the fine structure: the internal structure of the overall fine, simplify; appearance of tiny, innovative and generous. Entire product ergonomic.
2, the optimal gear: the product heart - gear for a more compact high-speed synchronous gear; optimal materials, direct to ensure the whole super-stable product performance,hoist and trolley wear coefficient increased by 1 fold, to meet the long-term overload operation needs.
3, the new hook: hook at the user-friendly design, from whatever direction the goods are not easy to pull decoupling, alloy foot material, thus preventing breakage and loss of material injury.
4, excellent parts: All parts are high quality alloy steel and carefully selected from manufacturers, resolutely eliminate substandard size parts.
5, a special casing:hoist equipment stainless steel pressing cover, light, solid, easy to forge.
6, refining chain: High-strength high-quality chain by experienced workers, 20 step sanding finish; counterparts at the weld is not rough, safe, feel good; medium frequency quenching; burst operation, overload operation, long-term jobs are to ensure that no accident; pull from multiple directions, broader scope; cover rust, used often new.
2013年8月26日星期一
High-temperature environments hoist Precautions
1, the operation of electric hoist cab shall be closed, but it should be equipped with fan or air-conditioning.
2, the motor windings and the cabinet should be buried thermistor temperature control device,hoist and trolley when the temperature exceeds a certain limit, the power to protect or stop the motor strong cold additional measures.
3, with the upper limit dual limit function. The first limit is weight limit, the second limit of conventional electric hoist upper and lower limit stopper off the fire.
4, high temperature insulation protection, electric hoist drum shell in the design and installation of the machine below the heat shield to isolate the molten metal heat radiation.
5, lifting the motor and run the motor insulation class Class F and lifting the motor windings built with overheating protection device.
6, rope configuration metallurgy occasion dedicated high strength high temperature resistant wire rope.
In addition to these high-temperature environment precautions,lever hoist the electric hoist fundamental issues should also be noted, do not overload the use, the use of the hoist Please read carefully before using the instructions and precautions.
Electric hoist more widely used in the field of environment, under normal circumstances the ambient temperature between -20 ℃ ~ +40 ℃,chain Block but with the expanding range of use in many high-temperature environments hoist pay special attention to the following matters:
2, the motor windings and the cabinet should be buried thermistor temperature control device,hoist and trolley when the temperature exceeds a certain limit, the power to protect or stop the motor strong cold additional measures.
3, with the upper limit dual limit function. The first limit is weight limit, the second limit of conventional electric hoist upper and lower limit stopper off the fire.
4, high temperature insulation protection, electric hoist drum shell in the design and installation of the machine below the heat shield to isolate the molten metal heat radiation.
5, lifting the motor and run the motor insulation class Class F and lifting the motor windings built with overheating protection device.
6, rope configuration metallurgy occasion dedicated high strength high temperature resistant wire rope.
In addition to these high-temperature environment precautions,lever hoist the electric hoist fundamental issues should also be noted, do not overload the use, the use of the hoist Please read carefully before using the instructions and precautions.
Electric hoist more widely used in the field of environment, under normal circumstances the ambient temperature between -20 ℃ ~ +40 ℃,chain Block but with the expanding range of use in many high-temperature environments hoist pay special attention to the following matters:
Tight line usage and Scope
Tight line is mainly used in the construction of overhead lines taut conductors. According to the material is divided into ordinary tight line and aluminum tight line,manual hoist tight line today to introduce you to using methods and scope of application.
Aluminum tight line to use:
Use hand lever handle, drive ratchet, turning spool in order to achieve taut rope. Need to relax rope, just flip the paw handle, stop paw spring tension, the rope can be pulled free.
Use ordinary tight line
When used on the first tight line or galvanized wire rope loosen, and fixed in the cross arm with clamp pliers clamp the wires, and then pulled the special wrench. Since the anti-reverse pawl role gradually rope or galvanized iron wire on the ratchet cylinder, the wires tightened. To tighten the wire fixing the insulator. Then loosen the pawl release the rope or galvanized wire, then release the clip pliers,hoist and trolley and finally the wire rope or galvanized iron wire on the ratchet drum.
Scope:
Tight line for automotive load boilers, steel, wood, bamboo, wool textiles, heavy machinery and other goods essential vehicle tied tight, locate special tools, but also for the temporary lifting of large mechanical equipment installation, car crater traction, wood, bamboo bale, etc. combined tool bar row. Tight line applications: buildings, roads, bridges, metallurgical, mining,lever hoist wells and other infrastructure construction management protection of mechanical equipment, can improve the process of lifting cargo security.
Aluminum tight line to use:
Use hand lever handle, drive ratchet, turning spool in order to achieve taut rope. Need to relax rope, just flip the paw handle, stop paw spring tension, the rope can be pulled free.
Use ordinary tight line
When used on the first tight line or galvanized wire rope loosen, and fixed in the cross arm with clamp pliers clamp the wires, and then pulled the special wrench. Since the anti-reverse pawl role gradually rope or galvanized iron wire on the ratchet cylinder, the wires tightened. To tighten the wire fixing the insulator. Then loosen the pawl release the rope or galvanized wire, then release the clip pliers,hoist and trolley and finally the wire rope or galvanized iron wire on the ratchet drum.
Scope:
Tight line for automotive load boilers, steel, wood, bamboo, wool textiles, heavy machinery and other goods essential vehicle tied tight, locate special tools, but also for the temporary lifting of large mechanical equipment installation, car crater traction, wood, bamboo bale, etc. combined tool bar row. Tight line applications: buildings, roads, bridges, metallurgical, mining,lever hoist wells and other infrastructure construction management protection of mechanical equipment, can improve the process of lifting cargo security.
2013年8月23日星期五
Portable electric hoist brake wear
Portable electric hoist is a flexible device can move around up and down, left and right movement is achieved by an electric sports car,hoist and trolley but the electric hoist is stopped, there will brake wear for a long time will affect the overall use of the device, the following detailed description of your lifting hoist brake wear causes.
Portable electric hoist brake wear is actually design problems, slow running electric hoist is driven by a small motor gear motor gear to achieve large lifting, and hanging objects when lifting large motor brake hub will open automatically, stopping automatic locking,hoist equipment electric hoist slow when lifting, by the small motor to drive the big motor rolling, this time a large motor is not energized state, the brake hub is not turned on, a large motor brake locking state rolling, thus resulting in the hoist brake wear.
Whether slow lifting or fall are slowly worn brake hub,lever hoist which is also in the future to improve mobile hoist focus.
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
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.
Common market of the three mini electric hoist
The use of mini electric
rope hoist closer to people's lives, is now emerging electric hoist, models are also diverse, on the market for you to explain the three common types of mini electric hoist, I hope for your help when purchasing.
Mini electric hoist also called "civil gourd" concrete divided into three types HG, HA, HK. Every model of a miniature electric wire rope hoist lifting of the speed, altitude, electrical power, weight lifting are different, the following your Details:
A, HG miniature electric hoist specifications H-K201, H-K202, H-K203 three, the nominal weight for 200KG, 250KG, 300KG.
Lifting height: 25m
Lifting speed: 20m/min
Input power: 1450w, 1850w, 2600w
Two, HA mini electric hoist the main specifications are H-A101, H-A102, H-A103, H-A104, H-A105, H-A106, H-A107. The use of single / double hook different different weight lifting.
Nominal weight, respectively (single hook / hook): 100/200KG, 125/250KG, 200/400KG, 250/500KG, 300/600KG, 400/800KG, 500/1000KG;
Lifting height (single hook / hook): 12/6M;
Lifting speed (single hook / hook): 10/5 (m / min);
Rated voltage of 230V, 50HZ, working coefficient of S3 20% 10MIN;
Input power,hoist and trolley respectively: 500W, 580W, 880W, 930W, 1352W, 1500W, 1700W;
Gross and net weight are: 24/22KG, 25/24KG, 33/25KG, 36/34KG, 41/38KG, 38/36KG, 40/38KG
Three, HK mini electric hoist specifications H-K201, H-K202, H-K203 three, the nominal weight of 200KG, 250KG, 300KG.
Lifting height: 25m
Lifting speed: 15m/min
Input power: 1150w, 1350w, 1500w
Mini electric hoist also called "civil gourd" concrete divided into three types HG, HA, HK. Every model of a miniature electric wire rope hoist lifting of the speed, altitude, electrical power, weight lifting are different, the following your Details:
A, HG miniature electric hoist specifications H-K201, H-K202, H-K203 three, the nominal weight for 200KG, 250KG, 300KG.
Lifting height: 25m
Lifting speed: 20m/min
Input power: 1450w, 1850w, 2600w
Two, HA mini electric hoist the main specifications are H-A101, H-A102, H-A103, H-A104, H-A105, H-A106, H-A107. The use of single / double hook different different weight lifting.
Nominal weight, respectively (single hook / hook): 100/200KG, 125/250KG, 200/400KG, 250/500KG, 300/600KG, 400/800KG, 500/1000KG;
Lifting height (single hook / hook): 12/6M;
Lifting speed (single hook / hook): 10/5 (m / min);
Rated voltage of 230V, 50HZ, working coefficient of S3 20% 10MIN;
Input power,hoist and trolley respectively: 500W, 580W, 880W, 930W, 1352W, 1500W, 1700W;
Gross and net weight are: 24/22KG, 25/24KG, 33/25KG, 36/34KG, 41/38KG, 38/36KG, 40/38KG
Three, HK mini electric hoist specifications H-K201, H-K202, H-K203 three, the nominal weight of 200KG, 250KG, 300KG.
Lifting height: 25m
Lifting speed: 15m/min
Input power: 1150w, 1350w, 1500w
2013年8月19日星期一
Electric hoist equipment management prevention system
Strengthen preventive electric hoist equipment management system to reduce accidents, to ensure personal safety and work efficiency
1, strengthening the electric hoist and trolley equipment safety management. For electric hoist and other small mechanical characteristics, should develop detailed safety rules and regulations, management system, ledger to complete. For electric hoist, and other special equipment should be regularly organized professional security inspection, investigation equipment problems, the problems identified should be implemented for the responsible units and persons responsible for coming up with feasible deadline for rectification and reform proposals. Functional departments of the rectification of the implementation, feedback and evaluation.
2, electric manual block machinery and equipment for strengthening safety management practitioners. Strengthen education and training, improve operator safety awareness, safety skills to master, compliance, strict compliance with safety procedures and other safety management system.
3, to strengthen the security of field personnel operating process management. Operation process safety management is in the process of production maintenance operations, through the process elements, the object element, time elements and spatial elements of system control, eliminating that may arise during the operation of the various dangers and harmful factors, to achieve safe production goals the key is to ensure the safety of the whole operation process specification, and reasonable. Process validation system is to require operators to determine, identify, act as a fixed mode of thinking, that is, in the course of operations are recognized by a certain way of operating, thus avoiding accidents.
4, to strengthen the mechanical hoist equipment management. From the design, manufacture, installation, maintenance and other aspects of strict control, timely elimination of hazards,load chain to ensure intrinsically safe equipment, through technical means to improve the degree of intrinsic safety equipment; equipment body meet safety technical requirements, safety accessory devices should be complete and effective.
1, strengthening the electric hoist and trolley equipment safety management. For electric hoist and other small mechanical characteristics, should develop detailed safety rules and regulations, management system, ledger to complete. For electric hoist, and other special equipment should be regularly organized professional security inspection, investigation equipment problems, the problems identified should be implemented for the responsible units and persons responsible for coming up with feasible deadline for rectification and reform proposals. Functional departments of the rectification of the implementation, feedback and evaluation.
2, electric manual block machinery and equipment for strengthening safety management practitioners. Strengthen education and training, improve operator safety awareness, safety skills to master, compliance, strict compliance with safety procedures and other safety management system.
3, to strengthen the security of field personnel operating process management. Operation process safety management is in the process of production maintenance operations, through the process elements, the object element, time elements and spatial elements of system control, eliminating that may arise during the operation of the various dangers and harmful factors, to achieve safe production goals the key is to ensure the safety of the whole operation process specification, and reasonable. Process validation system is to require operators to determine, identify, act as a fixed mode of thinking, that is, in the course of operations are recognized by a certain way of operating, thus avoiding accidents.
4, to strengthen the mechanical hoist equipment management. From the design, manufacture, installation, maintenance and other aspects of strict control, timely elimination of hazards,load chain to ensure intrinsically safe equipment, through technical means to improve the degree of intrinsic safety equipment; equipment body meet safety technical requirements, safety accessory devices should be complete and effective.
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
"Crane wire rope installation and testing practical norms" national standards GBT5972
State regulations should be considered as a consumable wire rope, when test showed its strength has been reduced to continue to use dangerous, that should be scrapped.
1. Installation
a) The new replacement rope rope should generally be the same type as the original, with the specifications.hoist and trolley If you use different types of wire rope shall ensure that not less than the original replacement wire rope wire rope performance.
b) respond rope through the pulley groove pulley block with radius gauge to accurately measure and record, while using the rope reel inverted dish installation method, that is, from the original tape to be unwound wire rope and wooden wheels on the plate while wearing steel shaft, placed in two dedicated steel frame, while rotating back plate, in order to eliminate the stress generated rope.
c) when installing wire rope,load chain wire rope should be prevented from fighting ring, kink, bend or glue harmful debris.
d) If the wire rope load when certain parts and mechanical friction, you should be able to access the site will be properly protected.
2. Test
a) The user requirements can do regularly observe and record;
b) for lifting the molten or red hot metal, acid, explosives, toxic substances lifting rope, required to check twice a week, usually at least once a month lifting machinery (refer to building site crane) expected rope can be more long-term work of lifting machinery, checked at least once a month;
c) Wire rope inspection site, usually full-length tests, but mainly check the following parts:
* Fixed rope movement and the whole story ends.
* Through the pulley block or bypass pulley rope segment, the mechanical performance of repetitive tasks case, you should pay particular attention to mechanical pulley hanging out around any part of the period.
* Located balance rope pulley rope segment or easy to wear rope segments.
* Rope end portion (crimp rope end buckle rope ends,lift hoist wedge rope end fittings, rope clamp strong side, the pressure pull fixed rope end)
* For use pressed or forged steel rope clamp Si Shengsheng Folder To examine whether there are cracks and use of materials in the presence or absence of the wire rope and rope slip between folders.
1. Installation
a) The new replacement rope rope should generally be the same type as the original, with the specifications.hoist and trolley If you use different types of wire rope shall ensure that not less than the original replacement wire rope wire rope performance.
b) respond rope through the pulley groove pulley block with radius gauge to accurately measure and record, while using the rope reel inverted dish installation method, that is, from the original tape to be unwound wire rope and wooden wheels on the plate while wearing steel shaft, placed in two dedicated steel frame, while rotating back plate, in order to eliminate the stress generated rope.
c) when installing wire rope,load chain wire rope should be prevented from fighting ring, kink, bend or glue harmful debris.
d) If the wire rope load when certain parts and mechanical friction, you should be able to access the site will be properly protected.
2. Test
a) The user requirements can do regularly observe and record;
b) for lifting the molten or red hot metal, acid, explosives, toxic substances lifting rope, required to check twice a week, usually at least once a month lifting machinery (refer to building site crane) expected rope can be more long-term work of lifting machinery, checked at least once a month;
c) Wire rope inspection site, usually full-length tests, but mainly check the following parts:
* Fixed rope movement and the whole story ends.
* Through the pulley block or bypass pulley rope segment, the mechanical performance of repetitive tasks case, you should pay particular attention to mechanical pulley hanging out around any part of the period.
* Located balance rope pulley rope segment or easy to wear rope segments.
* Rope end portion (crimp rope end buckle rope ends,lift hoist wedge rope end fittings, rope clamp strong side, the pressure pull fixed rope end)
* For use pressed or forged steel rope clamp Si Shengsheng Folder To examine whether there are cracks and use of materials in the presence or absence of the wire rope and rope slip between folders.
2013年8月12日星期一
Trolley operating instructions
Although the monorail is a common tool,wire rope hoist but there are still many people because of the use of improper methods of damage caused by monorail or shortened life. Here for everyone to talk about in detail when using the common issues and considerations for your reference.
1 TROLLEYS non-overload use.
2 hoist and trolley operation should make the force in bracelet hand chain wheel center plane, shall not be stayed.
3 Trolley cases where the hand pull exception, must not yank, should immediately stop using, check the reason.
4 monorail car gears and track surface regularly filling oil, and check the fasteners loose.
5 TROLLEYS TROLLEYS work is supported beam is, therefore deformation,Manual block distortion, cracking, or do not meet the criteria and have other defects can not be a single-track lane of I-beam.
6 monorail car lifting weights, forbids any person to walk or work under heavy loads.
7 monorail car when lifting heavy focus on the beam within the plane of the web, do not lift.
1 TROLLEYS non-overload use.
2 hoist and trolley operation should make the force in bracelet hand chain wheel center plane, shall not be stayed.
3 Trolley cases where the hand pull exception, must not yank, should immediately stop using, check the reason.
4 monorail car gears and track surface regularly filling oil, and check the fasteners loose.
5 TROLLEYS TROLLEYS work is supported beam is, therefore deformation,Manual block distortion, cracking, or do not meet the criteria and have other defects can not be a single-track lane of I-beam.
6 monorail car lifting weights, forbids any person to walk or work under heavy loads.
7 monorail car when lifting heavy focus on the beam within the plane of the web, do not lift.
Hand monorail car installation instructions
1 crane installation,hoist and trolley should make the rings to adjust the gasket around the inside wall equal to the number. But to ensure that side of the track and the roller gap is required between the edge of the rings on both sides to allow adjustment of a difference in the number washer.
2 lane installed in the track, the preload nut shaft hanging, hang light load test run, to be on the wheel and rail, and then tighten the outer nut, special attention should be interlocked between the nut.
3 TROLLEYS walking to be adjusted after installation kits and track ground roll gap to reach the specified value.manual hoist Adjustment method is: first loosen the nut, sleeve shaft to move the roll gap reaches a predetermined value, and then tighten the nut.
Precautions
Driving is strictly prohibited to use than the rated load.
Driving in lifting weights, and forbids anyone to walk or work under heavy loads.
TROLLEYS who encounter when using hand chain pull them or hand pull exception, must not yank, should immediately stop using and check whether the lifting of heavy objects with other objects implicated or have other faults.
TROLLEYS when in use,rope hoist do not differ with bracelet wheel plane at oblique plane pulling hand chain, side zipper hand beating or snap ring.
Bearings, gears, and track surface should be regularly filling grease.
2 lane installed in the track, the preload nut shaft hanging, hang light load test run, to be on the wheel and rail, and then tighten the outer nut, special attention should be interlocked between the nut.
3 TROLLEYS walking to be adjusted after installation kits and track ground roll gap to reach the specified value.manual hoist Adjustment method is: first loosen the nut, sleeve shaft to move the roll gap reaches a predetermined value, and then tighten the nut.
Precautions
Driving is strictly prohibited to use than the rated load.
Driving in lifting weights, and forbids anyone to walk or work under heavy loads.
TROLLEYS who encounter when using hand chain pull them or hand pull exception, must not yank, should immediately stop using and check whether the lifting of heavy objects with other objects implicated or have other faults.
TROLLEYS when in use,rope hoist do not differ with bracelet wheel plane at oblique plane pulling hand chain, side zipper hand beating or snap ring.
Bearings, gears, and track surface should be regularly filling grease.
2013年8月9日星期五
Climbing frame group hanging electric hoist commissioning procedures
Climbing frame group hanging electric hoist is attached to the wall by climbing frame lifting power wan buckle frame rack or ordinary steel fasteners and building climbing frame control cabinet composed of three parts, the popular saying is that you can be a dozen layers or whether dozens of buildings layer, as long as the erection of a wall scaffolding,Manual hoist coupled with climbing frame group hanging electric hoist as a hoist, electric control box for the operating center system, will be able to fully meet the cabinet structure, the following for you to explain the commissioning process.
1, group hanging electric hoist Before commissioning,load chain the construction unit shall organize, on behalf of the owners, supervision unit representatives, supplier representatives and owners of motor Ministry will participate in all pre-installation inspection and acceptance, in line with the design and specification requirements, commissioning work can be carried out.
2, the preparatory work before commissioning
A, electrical systems, safety interlocks, actuators, controllers, lighting and signal systems shall comply with safety requirements, the action should be sensitive and accurate.
B, fixed rope end and a hook and wound on the reel should be correct,hoist and trolley reliable, secure ropes compliance.
C, lubricate all lubrication points should be explained by oil were added.
D, all parts of the shell-proof bolts one by one check, you must tighten the sealing reliable.
E, when the line is energized, check the direction of the manipulation-proof control button should be explosion-proof electric hoist crane group movement in the same direction.
F, using the formal lifting limit switch limit switch position should be preceded by checking whether the lifting motor running in the same direction, or should change the wiring.
Electric chain hoist maintenance work should thoroughly
Maintenance work is essential, not only to the future use of the device, but the device has great influence on the overall life expectancy, maintenance, should not only observe the surface electric chain rope hoist , its internal structure should also be a detailed examination, maintenance work should be thorough.
Electric chain hoist use after a certain time, the internal gear parts may come loose under the circumstances and the situation of lack of oil,Hoist and trolley which requires fastening parts as well as increased oil to resolve.
Some electric chain hoist operations where relatively poor, sand is more serious, this time it should be cleaned regularly electric chain hoist to prevent gravel or dirt piled up, it touches hoist heavy wear.
In the inspection and maintenance of electric chain hoist, we must be careful patience, maybe a little negligence will lead to future accidents.
Check the equipment lubrication conditions,wire rope winch timely solutions to the lubrication system problems; lubrication equipment and replacement of damaged parts, equipment and tools; lubrication and cleaning of oil on the recording and analysis of the situation, and constantly improve the lubrication maintenance work.
Electric chain hoist maintenance does not require a certain time period, customers can according to their own operating conditions, do regular checks.
2013年8月5日星期一
Tackle the inspection before use
Hoist and trolley is easy to use, versatile, mainly used in factories, mines, agriculture, electricity, construction of production and construction, piers, docks, warehouses, machine installation, cargo lifting, etc. The following will provide you explain
hoist and trolley before use check:
(1) strictly in accordance with the nominal weight pulley used to prohibit overloading.
(2) the choice of pulley block sheaves calculated according to the relevant standard groove dimensions should be checked at the same time slot wheel, axle, plywood, hooks and other parts, look for cracks and trauma. If the wear volume of the groove wall 10% of the original thickness, the bottom wear volume of 50% d (match rope diameter) must be scrapped; such as wheel wear up to 5%, severe cracking rim, it must be replaced.
(3) In order to improve the life of wire rope, pulley diameter, generally not less than 17 times the rope diameter,Manual block and is generally used in wire rope sheave groove width than the diameter of 1-2.5mm as appropriate.
(4) in the direction of the force changes in the larger local and high-altitude operations, prohibit the use of hook type, and type pulley rings should be used to prevent decoupling. If they really need to use a hook type, you must also add to its safety device locking hook mouth.
(1) strictly in accordance with the nominal weight pulley used to prohibit overloading.
(2) the choice of pulley block sheaves calculated according to the relevant standard groove dimensions should be checked at the same time slot wheel, axle, plywood, hooks and other parts, look for cracks and trauma. If the wear volume of the groove wall 10% of the original thickness, the bottom wear volume of 50% d (match rope diameter) must be scrapped; such as wheel wear up to 5%, severe cracking rim, it must be replaced.
(3) In order to improve the life of wire rope, pulley diameter, generally not less than 17 times the rope diameter,Manual block and is generally used in wire rope sheave groove width than the diameter of 1-2.5mm as appropriate.
(4) in the direction of the force changes in the larger local and high-altitude operations, prohibit the use of hook type, and type pulley rings should be used to prevent decoupling. If they really need to use a hook type, you must also add to its safety device locking hook mouth.
2013年7月31日星期三
When the chain hoist and trolley combination be confirmed
Wire rope hoist electric sports car built in order to achieve the flexibility to move around on the I-beam, but when the chain hoist and trolley combination need to confirm what issues to ensure the safe use of electric rope hoist it? The following is to introduce you:
1, with or without cause malfunction of foreign electric car, the track is level.
2, chain electric hoist and trolley combination is being accurate, location or without offsets.
3, in the hoist and trolley driving traverse track, if used effectively install car stopper.
4, in the traverse rail road surface is attached to the paint and oil.
订阅：
博文 (Atom)