Hoist

  With a compact, light weight, small size, parts versatility, easy operation, it can be installed separately on the beam can also be installed in electric or manual single-beam, dual-beam, cantilever, gantry the use of a crane.
electric wire rope hoists structure
Part of the wire rope hoist are: motor, transmission, drum and sprocket. The mutual positions of the motor and the spool can be roughly divided into four different types.
(1) The motor axis is perpendicular to the axis of the hoist drum using worm gear, large width aspect size, structure, heavy, low mechanical efficiency, more difficult process. Manufacturers currently have no such structure type of product.
(2) motor axis parallel to the axis of the drum hoist, the advantage of small size, height and length. The disadvantage of a large width dimension, of the packet, manufacturing and assembly complexity. Track turning radius.
(3) The motor is mounted inside the drum hoist, the advantage of a small length dimensions, compact structure. Its main drawback is the motor cooling conditions are poor, poor groups, inspection, installation, maintenance, motor inconvenience, power supply unit complex.
(4) motor mounted on the outside of the drum hoist, the advantage is for the group is good, high degree of common, easy to change the lifting height, easy installation and maintenance. Its disadvantages: large length dimensions.

What lifting tackle operatives to note the following , please read carefully

(1), before starting a new block using 1.25 times the rated load test.
(2) prior to use to identify the block of nominal weight, are not allowed to play a load, can not be identified when the look-up table.
(3) Check tackle the parts are intact, assembly for problems, such as defective, is strictly prohibited.
(4), rope diameter must meet the trolley manufacturers, rope and pulley groove angle of no more than 40 to 60.
(5), in the direction of the force changes in the larger local and high-altitude operations, not to use the hook-type pulley, you should choose rings style pulley to prevent decoupling, as with hook-type, must be sealed with a lead wire.
(6), during use, to deal with pulleys, shafts regularly add oil to reduce bearing wear.
(7), in the high altitude remove pulleys, ban thrown from a height to prevent injuries and damage to the pulley.
(8), the opening must first tackle the process of using active board properly to prevent rope pop wounding.
(9), after put the rope electric chain block, try to gradually tighten the rope hoists, carefully check the ministries is good, with or without Kasheng, the friction of the Department, can be used after adjustment.
(10), if the multi-door pulley when using one of several door pulley, pulley from the weight should be reduced accordingly, to reduce the weight of the access gates to determine the ratio. How to tackle the use of five doors only crane 30T.
(11), in order to improve the ability to block the lifting group, reducing resistance when lifting large equipment, should be double-double kneeling head pulley block, if only a single kneeling head wear around the law. Use flowers worn. When the number of gates using pulley more, best worn with a large flower, kneeling rope tension must be within the range of safe traction hoist, wire rope safety factor used shall not be less than 5.
(12), two pulley sheave pulley block should maintain a certain distance from the center, can not be less than the specified value

Features of ewxplosion-proof electric chain hoist

Explosion-proof electric trolleys all electrical wiring and other components are concentrated in the explosion chamber, is proof isolation;
Explosion-proof electric chain hoist chain hoist uses 80 high-strength manganese steel chain, the safety factor of four times higher than the normal chain of even larger;
Explosion-proof electric chain hoist hook high intensity heat, designed with safety tongues, safe operation;
Explosion-proof electric hoist 110v double brakes, limit switches, and other upper and lower limit continuation  chain hoist high quality;
Explosion-proof electric chain hoist application areas:
Explosion-proof electric chain hoist is mainly used in flammable gas, dust or mixture within a plant or plants, including mining, chemical, pharmaceutical and other industries.
Explosion-proof electric chain hoist all electrical wiring and other components are concentrated in the explosion chamber, is proof isolation; hook: high intensity heat hook, designed with safety tongues, safe operation; chain: 80 high-strength manganese steel chain, the safety factor of four times higher than the normal chain of even greater dual brakes, limit switches, such as the continuation of the upper and lower limit, high-quality proof electric chain hoist, explosion-proof electric chain hoist points fixed and running style, are can be customized, we will play according to the customer's requirements to customize liter electric chain hoist lifting height. Because proof electric chain hoist with isolation explosion-proof function, and therefore mainly used in an explosive flammable environment.

Parts Maintenance proof electric chain hoist is like?

1, the wire rope hoist manufacturers, wire rope lifting equipment load-bearing parts, it must often "cleansing", regular lubrication. When any part of the rope twist festival appearance, broken, and we have to make the appropriate treatment, which requires us to skillfully use to extend the life of the rope.
2, bearings, each time after using a crane to be for bearing lubrication, when it should be done in time to replace the cracks.
3, the wheel, due to the relatively large load, coupled with the frequent use of the process, walking distance is relatively far away, and therefore, if the wheel diameter smaller than the original diameter when 10mm, should be replaced.
4, brakes, mainly used in hand chain hoistand operation mechanism, should maintain a daily habit to check if the brake wheel qualify burnt to explain the temperature is too high, adjust the brake shoe in its temperature does not exceed 200 ℃ circumstances and maintain the same gap between the brake drum, and often with kerosene to scrub.

Explosion-proof electric chain hoist Caution

1. Do not overload use. Before use is required to confirm parts intact, transmission parts and lift hoist oiled, idling situation to normal. Check before lifting hook is hanging down firmly. Do weights hanging at the tip of such erroneous operation.
2, explosion-proof electric trolleys at the time after cleaning and maintenance, load test should be carried out to confirm the work, reliable braking can be delivered. Brake friction surfaces must be kept clean. Brakes should be inspected regularly part to prevent brake failure, the occurrence of physical phenomena since the fall.
3, explosion-proof electric chain hoist lifting chain should be hung vertically, not a wrong twist of chain link, double under hook rack chain not flip. When lifting weights, strictly prohibited under heavy loads to do any work or walking, in order to avoid injury.
4, explosion-proof electric chain hoist in the gourd after use should be cleaned and coated with anti-rust oil, stored in a dry place. Maintenance and repair should be compared with those who were familiar with the hoist mechanism to prevent the performance of the machine do not understand the principles of free disassembly.

Explosion-proof electric chain hoist voltage transformer works like?

 Below we explain three points:
1, tap: to fit the needs of the power grid, the general has tapped transformer high side, can not fully guarantee tap sync switch, load tap so can not run in parallel.
  2, explosion-proof small electric hoist voltage transformer: primary winding turns N1, less secondary winding turns N2, the equivalent of a step-down transformer. PT at work in the primary winding and a secondary winding is connected in parallel, respectively, in the primary circuit and the secondary coil voltage control loop. So if the secondary winding shorted, will result in a very large secondary current.
3, Used / drawer: Handcart and drawers are part of the high voltage switchgear and low voltage switchgear, high voltage circuit breakers are installed and low voltage circuit breakers and relays and other components. They fixed switchgear function is basically the same, the main difference is to facilitate the proof electric hoist maintenance and repair.
Explosion-proof electric chain block can be installed separately using the word overhead beam, explosion-proof electric chain hoist can be installed on supporting electric or manual single-beam, dual-beam, cantilever, gantry cranes. Electric chain hoist, light weight, high level. Explosion-proof chain hoist better safety performance, high reliability, and low failure rate. Working low noise, overload the power, the braking force is superior.

Explosion-proof electric chain hoist literacy knowledge

Explosion-proof electric hoist trolley is our latest design and manufacture of explosion-proof standard lifting equipment, explosion-proof electric hoist required gb3836-2000 design, manufacture and acceptance, the proof in the form of "flameproof" explosion exposed parts of the gourd using a special non-sparking material,
Safe and reliable explosion-proof performance. Product performance testing by the Ministry of Machinery Industry explosion-proof lift hoist for Quality Supervision and Inspection Center of Jiamusi sub-centers, and presented proof certificate; bcd1 explosion-proof electric hoist is mainly applied to class i and ii ab grade class, temperature class t 1 - -t 4
Various explosion hazard group! Ex logo dⅱbt4 and dⅱct4, applicable to a level ⅱa, ⅱb, ⅱc level, temperature class t1-t4 group of flammable gas, steam and air to form an explosive gas mixture of 1 and Zone 2 areas.