This standard specifies the test method for resistance to fatigue of the pull rod of traveling case and trolley bag.
This standard is applicable to the pull rods of various traveling cases and trolley bags.
2 Principle
The reciprocating fatigue property and structure firmness of pull rod as well as the durability of switchgear shall be inspected by switching the pull rod lock and pull rod continuously, and by pulling out and pressing in the pull rod repetitively with a certain frequency.
