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

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 transformer How does it work?

Explosion-proof hand chain hoist emergency stop switch: When proof electric hoist button is pressed, the power will be cut off, the button lock automatically. Reverse protection circuit design ensures that when the motor power and avoid a wrong phase, does not result in the motor burned. Explosion-proof electric chain block and safety tongue, hook is highly resistant steel forged and heat treated to meet the needs of intensity levels under the hook can be rotated 360 degrees, and with a safety hook tongue in order to ensure the safety of Ascension when. Mechanical load brakes, mechanical load brakes at full load does not result in a fall faster and faster, and is independent of the motor brake, mechanical load brake effect still makes load at a slow rate slowly decreased.

electric wire rope hoist applications

electric wire rope hoist wire rope hoist are special lifting equipment, with a compact, light weight,electric chain block small size, parts versatility, easy operation. It can be installed separately on the beam, supporting the installation can also be used on electric or manual single girder, double girder, cantilever, gantry cranes.
electric wire rope hoist is mainly used for a variety of lifting, pull shift, handling heavy loads, tank flip chip bonding, such as installing and moving all kinds of medium-sized concrete, steel, and machinery and equipment for construction and installation companies, factories civil construction and bridge construction, electric power,electric wire rope hoist shipbuilding, automobile manufacturing, construction, roads, bridges, metallurgical, mining, slope tunnels, wells and other infrastructure construction management protection of machinery and equipment.