The steps of operating and testing an electric chain crane involve multiple aspects to ensure safe and efficient completion of tasks. The following are detailed operation steps and testing methods:

1、 Preparation before operation

Check equipment:

Ensure that the external power supply meets the requirements, the wires are intact and undamaged, and the crane is reliably grounded.

Check whether all components of the crane are intact, the transmission part and lifting chain are well lubricated, and the braking is sensitive and reliable.

Check for any looseness, cracks, oil leakage, or other issues with each component and promptly address them.

Workplace preparation:

Ensure that the work site is flat and free of debris to avoid affecting the stability and operational safety of the crane.

Wear personal protective equipment such as helmets, gloves, safety shoes, etc.

Develop an operational plan:

Develop a reasonable operation plan based on specific lifting tasks, including lifting height, size and weight of lifted objects, operation route, etc.

2、 Operation steps

Preparation before startup:

Straighten out the lifting chain and strictly prohibit its use when twisted or knotted.

Test run to check if the transmission is smooth and if the sprocket is correctly engaged with the lifting chain.

Lifting heavy objects:

Check if the upper and lower hooks are securely hooked, and ensure that the lifted object at the end of the hook is correctly installed inside the safety tongue. It is strictly prohibited to lift heavy objects at the tip of the hook or perform other incorrect operations.

It is strictly prohibited to lift heavy objects in an unbalanced state, ensuring that the lifting or lowering of heavy objects does not exceed the limit position, avoiding severe lifting and shaking up and down, and strictly prohibiting diagonal pulling of heavy objects.

It is strictly prohibited for personnel to do any work or walk under heavy objects during lifting to avoid personal injury.

Smooth operation:

Use a controller to raise or lower the electric crane to the appropriate height.

Move the lifting object horizontally to the designated position as needed, control the speed and force, and ensure that the lifting object is smoothly lowered.

Reverse operation:

Before reverse operation, it is necessary to confirm that the motor has completely stopped running, and sudden reverse operation is strictly prohibited.

End operation:

When the crane is not in use, the suspended object or hanger must be lowered and must not be suspended in the air.

After the crane operation is completed, the lower hook should be raised, and the buckle switch and the lower hook chain must be suspended vertically for safety.

3、 Testing method

Empty load test:

Test whether the various functions of the crane, such as lifting, translation, braking, etc., are normal under no-load conditions.

Load testing:

Gradually increase the load and test the load-bearing capacity and stability of the crane.

During the load testing process, pay attention to observing the operation of the crane to ensure that there are no abnormal sounds, vibrations, or other phenomena.

Security performance testing:

Test whether the safety protection devices of the crane are sensitive and reliable, such as limit protection devices, overload protection devices, etc.

Maintenance and testing:

Regularly maintain the crane and test its performance after maintenance to ensure it meets the requirements.

4、 Precautions

During the operation, closely observe the surrounding environment to prevent collision or contact with other equipment or personnel.

Overloading the use of cranes is strictly prohibited to avoid damaging the crane structure or causing safety accidents.

Electric cranes are strictly prohibited from carrying personnel and can only be used for lifting objects.

During the operation, maintain good communication and coordination with the staff and command personnel to ensure the safety and smoothness of the operation.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment