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A crane is a tool for lifting materials and plays a very good role in daily transfer of heavy objects. The hook is one of the important parts of the crane. There is also a demand for hook varieties. How should we choose?

1. The hooks of cranes are mainly divided into single hooks and double grooves. Single hooks are mainly used for lighter objects, while double hooks are mainly used for heavier objects. Generally, cast single hooks are mainly used for lifting cranes below 30T, double hooks are used for lifting cranes of 50T-100T; sheet single hooks are used for lifting 75T-350T, and double hooks are used for lifting cranes above 100T.

2. The shapes of hooks are generally round, square, trapezoidal and "T" shaped. It can be selected according to the stress state. The "T"-shaped cross-section design is reasonable, but the casting process is also relatively complicated; the trapezoidal cross-section is more reasonable in stress and simple to cast, while the rectangular (square) cross-section is only used for sheet hooks. The load-bearing capacity of the cross-section is not fully utilized and is bulkier. The circular cross-section is only used for small hooks.

As for the triangular thread when casting the tail of the hook, due to the severe stress concentration of this structure, it is easy to crack at the cracks. Therefore, trapezoidal or zigzag threads are often used at the tail of large hooks.

A crane is a tool for lifting materials and plays a very good role in daily transfer of heavy objects. The hook is one of the important parts of the crane. There is also a demand for hook varieties. How should we choose?

1. The hooks of cranes are mainly divided into single hooks and double grooves. Single hooks are mainly used for lighter objects, while double hooks are mainly used for heavier objects. Generally, cast single hooks are mainly used for lifting cranes below 30T, double hooks are used for lifting cranes of 50T-100T; sheet single hooks are used for lifting 75T-350T, and double hooks are used for lifting cranes above 100T.

2. The shapes of hooks are generally round, square, trapezoidal and "T" shaped. It can be selected according to the stress state. The "T"-shaped cross-section design is reasonable, but the casting process is also relatively complicated; the trapezoidal cross-section is more reasonable in stress and simple to cast, while the rectangular (square) cross-section is only used for sheet hooks. The load-bearing capacity of the cross-section is not fully utilized and is bulkier. The circular cross-section is only used for small hooks.

As for the triangular thread when casting the tail of the hook, due to the severe stress concentration of this structure, it is easy to crack at the cracks. Therefore, trapezoidal or zigzag threads are often used at the tail of large hooks.