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Safety Inspection of Electric Wire Rope Hoist

Before using the crane hoist, we need to conduct some tests on the equipment to verify its performance and ensure its safety. When conducting no-load tests, it is necessary to ensure the reliability of the operation of each installation device, the normal operation of each mechanism, and the reliable protection of each braking part, while ensuring the long-term stable operation of the electronic control system and operating system.

Causes of Failure of Steel Wire Ropes and Electric Hoist Hooks

The wire rope and electric hoist motor are broken. With the remote control constantly holding down the lift button, the conical brake is in the open position. If the motor malfunctions or lacks power at this time, the hook will be affected. Reduced load effect.

In various stages of torque transmission of wire rope electric hoists, damage to each bearing can also affect torque transmission. The damage of bearings will cause the parts of the transmission mechanism to bear partial load torque. Transmission shafts that bear partial load torque are prone to shaking and twisting; Unstable gear engagement, even leading to gear fracture; Worn splines. This will affect torque transmission, leading to a decrease in the load-bearing capacity of the hook.

The reducer of the wire rope electric hoist is faulty. The speed of the lifting cable is reduced and the torque is increased by installing a reducer on the horizontal side of the gear transmission device. The torque matched with the output speed and the motor and drum speed, as well as the input torque. The electric hoist reducer includes an input shaft, intermediate shaft, output shaft, and gears that mesh with each other on each shaft. When any shaft is twisted, broken, or shattered, any of the torques passed by the teeth occur, causing the hook load to decrease and affecting smooth engagement.

There are some problems with wire rope electric hoists when transmitting torque from the motor to the reducer. The electric motor and reducer of the wire rope electric hoist are located on both sides of the hoist. The torque transmission between them is achieved through the coupling between the transmission shaft and the drum body. The transmission shaft and coupling are used to transmit torque through splines. Broken transmission shafts, worn splines, and damaged couplings can all affect the transmission of torque, leading to load-bearing slip of the hook.