Inspection and testing methods for operational electric hoists after installation are crucial to ensure their safety, reliability, and performance. Here are some comprehensive inspection and testing methods:

Inspection Methods

Visual Inspection:

Conduct a thorough visual inspection of the hoist, including all its components and accessories.

Check for any visible damage, wear, or deformation.

Ensure that all connections, fastenings, and welds are secure and intact.

Dimensional Measurement:

Measure critical dimensions of the hoist, such as the diameter of the wire rope, the thickness of critical components, and the clearances between moving parts.

Compare these measurements to the manufacturer's specifications to ensure compliance.

Functional Verification:

Verify the functionality of all controls, indicators, and safety devices.

Ensure that the hoist operates smoothly and without any abnormal noises or vibrations.

Testing Methods

No-Load Test:

Operate the hoist without any load to check its basic functionality.

Run the hoist in both directions for a cumulative time of at least 5 minutes to ensure that all mechanisms and controls are working normally.

Load Test:

Conduct load tests with gradually increasing loads to assess the hoist's capacity and performance.

Start with a load that is less than the rated capacity and gradually increase it until the rated load is reached.

Monitor the hoist's performance during each load test, looking for any signs of strain, deformation, or failure.

Static Load Test:

Apply the rated load to the hoist and lift it to a height of 100-200 mm above the ground.

Maintain this position for at least 10 minutes to check the hoist's ability to support the load without deformation or failure.

Dynamic Load Test:

Operate the hoist with the rated load and perform various movements such as lifting, lowering, and traversing.

Check for any abnormal vibrations, noises, or overheating during the test.

Ensure that the hoist's safety devices, such as limiters, buffers, and brakes, are functioning correctly.

Brake Test:

Test the brakes of the hoist to ensure they can stop the load within a safe distance and time.

Adjust the brake settings if necessary to meet the manufacturer's specifications and safety standards.

Additional Considerations

Documentation:

Record all inspection and test results in a detailed report.

Include photographs, measurements, and any observations or findings that are relevant to the hoist's condition and performance.

Safety Precautions:

Ensure that all personnel involved in the inspection and testing are properly trained and equipped with the necessary safety gear.

Follow all safety protocols and procedures to minimize the risk of accidents or injuries.

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