Classification and materials of crane hook block
The common hook type of the crane can be divided into two types: forged structure and hook. The forged structure is also used for single hook and double hook. The single hook is used for the crane of 80 tons or less. The double hook is used for the overhead crane of 80t or more. The plate hook is formed by arranging a plurality of steel plate rivets into a hook shape, and the pad is provided with a pad at the hook end, which can also reduce the wear on the hook body, and can also make the load evenly distributed on each hook piece, mainly for large Lifting cranes and metallurgical cranes.
The crane hook group is one of the important force components of the crane. It not only bears the weight of the crane, but also bears the impact load generated by the lifting object when the mechanism is started and braked. Therefore, the material of the hook is not only high mechanical. Strength, but also better toughness. The material of the forged hook is usually 20, 20SiMn steel, and the plate hook is commonly used Q235 and 16Mn steel. Therefore, we need to select different hooks according to the type of hooks. Only when the products are selected according to the needs can the safety of the big cranes be guaranteed.