Regulations for the Use and Maintenance of Electric Hoists for Aluminum Alloy Jib Crane

This regulation details the correct use of electric hoists in aluminum alloy jib cranes, including daily inspections, regular maintenance, and safe operating specifications, to help improve equipment service life and operational safety.

1. The electric hoist that is newly installed or installed after disassembly and inspection should first be tested several times in an empty car. But do not try to turn on the power before the installation is complete.

2. Before normal use, perform a static load test with a rated load of 125%, lifting about 100 mm from the ground, and 10 minutes to check whether it is normal.

3. The dynamic load test is to perform repeated lifting and moving left and right tests with the rated load weight. After the test, check whether the mechanical transmission part, the electrical part, and the connection part are normal and reliable.

4. In use, it is forbidden to use it in an environment that is not allowed, and when it exceeds the rated load and the rated number of closings per hour (120 times).

5. During installation, commissioning, and maintenance, strictly check whether the limit device is flexible and reliable. When the hook is raised to the upper limit position, the distance between the hook shell and the reel 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 safety circle of the steel wire rope on the drum should be ensured, and the effective safety circle must be more than 2 circles.

6. It is not allowed to simultaneously press two flashlight door buttons that make the electric hoist move in opposite directions.

7. After the work is completed, the main switch of the power supply must be opened to cut off the power supply.

8. The electric hoist should be operated by a dedicated person, and the operator should fully grasp the safe operation regulations, and it is strictly forbidden to pull the inclined crane.

9. In use, the electric hoist must be inspected regularly by specialized personnel, and measures should be taken in time when the fault is found, and carefully recorded.

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