In the process of running the electric hoists, the empty car test should be carried out several times first, but before the safety is completed, it is forbidden to test the power. Before normal use, the static load test shall be carried out at a rated load of 125% and lifted from the ground by about 100 mm for 10 minutes to check whether it is normal.
The electric hoists dynamic load test is based on the rated load weight, which is used for repeated lifting and left and right movement tests. After the test, the mechanical transmission part, the electrical part and the connecting part are checked for normal and reliable. In use, it is absolutely forbidden to use in an unacceptable environment and in excess of the rated load and the number of rated closings per hour (120 times).
When installing and debugging, the electric hoist must strictly check whether the limit device is flexible and reliable. When the hook is raised to the upper limit position, the distance from the hook shell to the roll shell must be greater than 50mm (10t, 16t, 20t must be greater than 120mm) ). When the hook is lowered to the lower limit position, the wire rope safety ring on the reel should be ensured, and the effective safety ring must be more than 2 turns.