Castor before delivery of the necessary steps - — The performance test - Castor, industrial casters manufacturers: big wheel industry!

Castor is widely used in various fields, in order to guarantee the castor can have high quality and safe operation, each qualified castor, before they go out vendor will carry on the performance test, the following follow wanda go to know the manufacturer is how to test the performance of castor. 1 impact test will castor vertical backward installed on the ground test platform, the quality is 5 kg, ± 2%) Heavy objects from height is 200 mm, allowable deviation & plusmn; 3 mm for the position of the free fall impact caster wheel, if for two rounds of two wheel should be hit at the same time. In the whole experiment process does not allow any part of the caster and separation and caster roll experiment is completed, circuition or brake function should not be damaged. 2. Resistance performance test when testing the performance castor should keep dry and clean, place the caster in a piece of insulation on the metal plate with the ground, keep the wheel edge in contact with the metal plate, on the caster wheel load of 5% to 10% of the nominal load. With the insulation resistance tester ( Nominal open circuit voltage of 500 v, determination of the resistance value of fluctuation within 10% and no more than 3 w) in the wastage of the products The electric resistance between castor and metal plate. In type conductive castor, resistance is not more than 104, and the resistance of the antistatic caster should be between 105 and 107. 3. Static load test caster wheel on the ground steadily run is a state of pure theory. Castor static load test process is to casters in horizontal smooth steel with screws testing platform, applying force of 800 n along the gravity direction of castor keep 24 h, 24 h after excluding will force check castor condition, after the experiment measured the deformation of castor does not exceed 3% of the wheel diameter and the experiment after the completion of the caster roll, circuition or brake function has no damage is qualified. 4. Reciprocating wear testing castor reciprocating wear test to simulate the casters in daily use the actual rolling, the two points with and without obstacles obstacles test test, the trundle put to the test platform is installed correctly, each test castor load of 300 n, test frequency is ( 6 - 8) Times/min, a test cycle including 1 m and 1 m back to reverse a movement back and forth, with an obstacle in ( Metal obstacles, 50 mm wide, 2 mm - 3毫米) Test platform to test 5000 times ( H castor) Or 30000 times ( W type casters) 。 At the levels of no obstacle test bench (70000 times H castor) Or 20000 times ( W type casters) 。 In the process of test is not allowed to have from castor or other part, at the end of the test each castor should be able to drive its normal function, test after the completion of the caster roll, circuition or brake function should not be damaged. 5. Rolling resistance and the rotational resistance test for rolling resistance test, in the standard are three casters will be installed in a three arm of the base, according to different levels of tests, the 300/600/900 n load test ( Including the quality of the base) On the base of exerting a horizontal traction made the caster wheel speeds on the test platform of 50 mm/S ( Allowable deviation & plusmn; 5%) , maintain 10 s. Due to the caster wheel rolling friction when starting, and there is a large acceleration test measurement after 5 s level of traction, the size does not exceed 15% of the test load for qualified. Rotational resistance test is in linear or circular motion tester is installed on one or more casters, make its direction and driving direction into 90 & deg; 。 According to the different levels of tests, each trundle on 100/200/300 n load test. Places a traction so that the test platform of caster wheel speed of 50 mm/S ( Allowable deviation & plusmn; 5%) And the rotation happens within 2 s. To rotate the castor maximum level of traction, its size does not exceed 20% of the test load for qualified. Above several test methods is the manufacturer of the production of castor performance test method, only through the above method test and qualified castor can be considered as qualified products, in the actual operation process will play to the role of the castor should have! 版权: