The quality of wire rope hoist hook judgment methods

1, the hook hook should be greater than 360 degrees to 180 degrees in the horizontal plane and vertical direction within the flexible rotation.
2, the hook surface should be smooth, no peeling, acute, burr, crack, wrinkle and other defects.
3, cheap wire rope hoist hook and its affiliated parts in any of the following circumstances, should be scrapped:
4, the dangerous section of wear up to 10% of the original size;
5, the opening degree than the original size increased 15%;
6, the torsional deformation of more than 10 degrees;
7, monorail wire rope hoist the dangerous section or hook neck plastic deformation;
8, single girder a nut and a crane hook crossbeam any crack and deformation.