Before using safety belts for high-altitude operations, the following tests should be conducted:

1、 Static load test

Purpose of the experiment:

The static load test is mainly to verify the maximum tensile force that the safety belt can withstand in a stationary state, to ensure that it can withstand the weight of the operator and the possible impact force in actual use.

Test method:

Choose a suitable tensile testing machine, fix one end of the seat belt on the testing machine, and load the other end with gradually increasing static tension.

According to national standards, static load tests are generally conducted on the main belt and safety rope of seat belts separately. For example, the overall static tension of the safety belt for pole work should not be less than 4.5kN; The static tension of the main belt of the fall suspension safety belt should not be less than 22kN, and the static tension of the safety rope should not be less than 15kN.

The loading process should be slow and uniform. Observe the deformation of the seat belt during the loading process. When the specified tension value is reached, hold it for a certain period of time (usually 5 minutes) and check whether the seat belt is broken or broken.

2、 Impact test

Purpose of the experiment:

The impact test simulates the situation where workers accidentally fall while working at heights, and tests the protective performance of safety belts under the instantaneous impact force.

Test method:

Use a dedicated impact testing machine to wear a seat belt on the simulated person and lift the simulated person to a certain height.

Release the dummy and allow it to fall freely. During the falling process, the safety belt should be able to effectively limit the dummy's falling speed and disperse the impact force.

Observe the performance of the seat belt during the impact process, including the elongation of the seat belt, the reliability of the buckle, and the protective effect on the simulated person. At the same time, check whether there is any obvious damage to the seat belt and the simulated person.

Through these experiments, it can be ensured that the quality and performance of safety belts for high-altitude operations meet safety requirements, providing reliable protection for operators. When conducting experiments, it is necessary to strictly follow relevant standards and specifications for operation, and be supervised and evaluated by professional personnel. If the seat belt fails the test, it should be replaced or repaired in a timely manner and should not be used in high-altitude operations.