Cycling is a fault that often occurs during the use of electric gourds. It manifests as a sudden failure of the brake, and the hooks and heavy objects quickly fall under the action of gravity. There are many factors that cause the failure and high concealment, which brings great trouble to inspection and maintenance work, and it is easy to cause equipment damage and casualties. The main reasons for electric gourd cars are the following four:

Dordling (braking ring) wear: The bracket skin is one of the easy parts of the electric gourd, which is installed on the inside of the explosive cover of the front end of the motor. Each car lift and the operation of the electric gourd have its participation, so the wear speed is very fast. When the amount of wear reaches a certain degree, the explosive skin loses its braking function, and the electric gourd accident occurs.

Pressure spring failure: Pressure spring loading the rotor of the lift motor to play a limit and attribution role. The limitation of the position is to connect the power supply when the lifting motor is connected. Due to the effect of the electromagnetic field, the rotor instantly moves the opening of the lock cover, so that the electric gourd began to work. There is no pressure spring. At the time, the energy of the compressed spring deformation is released, driving the rotor back to the original position. Because the lock cover is connected to the front end of the motor rotor, while the rotor returns, the lock cover also returns, and it has the effect of holding the gate. It is precisely due to the high frequency of pressure spring participation in the work of electric gourds, which leads to frequent damage to pressure spring. The main form of failure is fatigue failure and annealing failure. The consequences of the failed spring are that the lid cover cannot be returned smoothly, and the braking effect cannot be available.

Elastic couplet damage: The elastic coupling is located in the electric gourd roll. It is a structure that connects the two rigid joints through the screw by the rubber ring. One of the rigid joints is directly connected to the rotor of the lifting motor, and the other rigid.

The joint axis is directly connected to the reducer. When the rubber ring is damaged, the two joint shafts are independent of each other and do not restrain each other. The constraints from the automatic lock ring are lifted, and the hooks and heavy objects fall to the ground under the action of gravity. Turn at high speed.

The adhesion of the contactor: When the contacts of the lift vehicle are touched, the electric gourd has only one direction movement. The hook or rises or falls, and cannot be artificially controlled. This phenomenon is also called the cars. At this time, the power gate must be pulled out immediately, otherwise it will cause great damage to the electric gourd equipment itself.