How to judge whether the electric hoist is up to standard?

1. The hoisting chain should be equipped with a guide device to assist the normal meshing of the chain with the hoisting sprocket and the cruise ship. The unstressed end of the hoisting chain should be provided with a device to prevent the hoisting chain from overwinding and detaching from the hoisting sprocket. restrictive device.

2. The rated lifting capacity of the electric chain hoist should be marked on the prominent position of the lower hook, and there should be a locking device to prevent the rigging from slipping accidentally. The lower hook should be able to rotate 360 ​​degrees and turn flexibly.

3. The metal of the motor winding should be able to withstand the withstand voltage test for 1 minute without insulation breakdown.

4. For motors with rated power not greater than 1.1KW, the leakage current during the test should not exceed 10 mA, and for motors with rated power greater than 1.1KW, the leakage current during the test should not exceed 20 mA.

5. The mechanical performance test of the hook should comply with the national regulations, and the lifting chain should not be lower than the requirements of GB\/T10051.1.