Test under specified load conditions to test the quality of the levers and handles. The oscillation frequency is 20 times/minute, the lever test is 500 times, and the handle test is 1000 times. It is required that the pull rod and the handle are not broken, and the pull rod is drawn smoothly.
Bump wear test:
Test under specified load conditions, simulate the use on uneven ground, and test the quality of the wheels. The box is tested at an angle of 45 degrees, the test speed is 4km/h, and the test is for 5 hours. It is required that the wheels are free from breakage, cracks, deformation, and poor rotation, and the wheel foreskin must be intact.
After testing under the specified load conditions, test the quality of the box and wheels. Free fall 3 times from a height of 90cm and four rounds of simultaneous landing, free fall once from a height of 60cm and two rounds of landing, free fall from a height of 60cm once and a single round of landing. It is required that the wheels are not broken or broken, and the box body is allowed to deform and not to be broken.
Test under specified load conditions to simulate the case where the box rolls off the stairs, and test the quality of the wheels, box, and tie rods. Pull the lever of the box apart, and turn it freely in the drum containing obstacles for 50 revolutions to conduct the destruction test. It is required that the wheels are not broken or broken, the box body is not broken, and the tie rod is not broken.
Tie rod reciprocating test:
Simulate the use of tie rods to test the quality of tie rods. Pull the lever 3,000 times back and forth, which requires the product to be flexible and smooth after the test.
Wheel wear test:
Test the quality of wheel foreskin. Only the wheel has a weight of 10 kg, and it wears at a speed of 5km/h for 4 hours. It is required that the wheel foreskin does not delaminate, fall off, or break after the test.
Salt spray test:
Test the quality of hardware parts. Salt water spraying on hardware parts for 72 hours requires no rust, blistering and delamination on the surface of the parts.