electric pallet jack hoisting mechanism with hooks to 1.5 times the rated load as a test load test

Human-driven hoisting mechanism with hooks to 1.5 times the rated load as a test load test. Power-driven hoisting mechanism with hooks to 2 times the rated load as a test load test.

After the test load hook lifted, there should be no obvious defects and deformation, increase the degree of opening shall not exceed 0.25% of the original size.
Qualified test hook, the hook scissor lift should be printed mark low stress areas, including the nominal weight, factory standard, or the name and logo testing, production number and so on.
Retirement standard hook
One of the following situations occur when the hook should be scrapped:
① crack;
② dangerous section wear up to 10% of the original size;
③ opening degree increased powered pallet truck by 15% compared with the original size;
④ shank torsional deformed beyond 10 °;
⑤ neck hook or hooks dangerous section is plastically deformed;
⑥ hook thread corrosion;
⑦ piece hook bushing wear up to 50% of the original size, replace the bushing;
⑧ piece spindle wear hook up to 5% of its original size, replace the mandrel