Wire rope hoist hook

At present, there are large quantities of hoist is in common use of the occasion,Wire rope hoist  the work is not very heavy. This kind of crane is large, wide purpose. Considering the comprehensive benefits,1 phase hoist requires future crane to try to decrease the height, to simplify the structure, reduce the weight and wheel pressure, also can make the whole building height decreased, in light of the building structure, reduce the construction cost.
Hoist the hook head is after forging after heat treatment and made. The forging process is a method of metal heat 15 ton electric chain hoist processing technology in the forging process, process is metal microstructure refinement and metal fiber alignment, and heat treatment to eliminate internal stress and improve the mechanical properties of the metal (can be simply understood as the metal internal organization of more compact).
Welding is the whole process of metal melting, mechanical lifting devices partial fusion, curing process. Repair welding, repair welding of low near the hoist hook maternal due to thermal conduction, so that part of the base metals are subject to different degrees of heating and cooling, as to this part of the first heat treatment, have changed the organization and performance of this part, and the majority of welding are for the sunken parts wear hook, and depression and vertical cross-section in the same line. Weld metal microstructure refinement of the hook and metal fiber order is destroyed, reduces the electric hoist mechanical properties.

The operation steps of electric chain hoist the most secure

Always refer to a most steps for the operating equipment, electric hoist with trolley first of all the benefits would be considerable, because this is the effective guarantee of the key, the instrument more smooth application so, great care is needed to master, especially some novice friends need to know, so as to avoid the adverse situation of operation in this regard, the introduction of the electric chain hoist equipment is so, ratchet lever block so today in the following we understand together.

1, hand chain hoist load should be checked before starting, hook is hanging in prison, should make the load on the central hook hook cavity by. Check the overweight chain without twisting the wrong, twisted, lower hook assembly of double chain reversal in the two row chain shall not.

2, NRK hyacinth use found hand zipper pull immobile not jerked, not to increase staff, should immediately stop the hand chain hoist, and the check.

3, such as crane trolley hand zipper pull do not move, check the weight is implicated with other objects; components are damaged; heavy overloading.‍

Matters needing attention in the use of the chain hoist

1  gourd examination should load before the start, hook is hanging in prison, electric hoist with trolley should make the load on the central hook hook cavity by. Check the overweight chain without twisting the wrong, twisted, lower hook assembly of double chain reversal in the two row chain shall not.

2  gourd use found hand zipper pull immobile not jerked, not to increase staff, should immediately stop the hand chain hoist, and the check.

3 if the  chain hoist hand zipper pull do not move, check the weight is implicated with other objects; components are damaged; heavy overloading.‍

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.