Crane Parts: Hook Group for Overhead Crane, Gantry Crane, Jib Crane and Electric Hoist

Crane hook group introduction

Crane lifting hook is a common device for grabbing and lifting loads used by a hoist or crane. The lifting hook is usually equipped with safety latch to ensure the wire rope sling, chain or rope in the proper place of hook and ensure the safety. With one or more built-in pulleys, the crane hook group can amplify the lifting force.

Components of hook group

Crane hook group is one of the most widely used loads handling devices, which is consisted of hook, hook nut, thrust bearing, hook beams, pulley, pulley bearings, pulley hanger, etc.

Application of hook group

Due to the characteristics of simple manufacture and strong usability, crane hook group is used widely to handle materials. As the most widely used loads handling devices, crane hook groups are usually used with hoist or crane machinery for handling materials in various applications in different industries, such as used on overhead crane, gantry crane, jib crane and electric hoists, electric chain block and manual chain block also use the hook.

 

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Types of hook group

According to different standards, crane hook groups can be classified into different types, the single and double hook, the forging and laminated hook, closed and semi-closed hook, and other hooks, such as, electric rotary hook, etc. according to the different features, these types of crane hook groups are widely used in different applications.

1) On the shape of hooks

Lifting hooks can be classified in to single hook, C type hook, and double hook, etc.

Single lifting hook is usually used for handling loads under the weight of 75 tons, with the feature of simple manufacturing and convenient to use, etc.

Due to the good bearing capability, the double lifting hook is widely used for heavy loads handling.

2) On manufacturing methods

According to the produciton methods, crane hook groups can be classified into forging hook and Laminated hook.

Forging hook

The forging hook is made of high quality low carbon steel or low carboon alloy steel, such as, 20 high-quality low carbon steel, 16Mn,20MnSi,36MnSi, which is annealed after being forged.

The forging hook is simple to be manfactured and is easy to be operated however its stress condition is not as good as laminated hook. Therefore, the froging hook is usually used for handling loads below 80 tons. And double hooks will be adopted when come into handling heavey loads.

Laminated hook

Laminated hook is riveted through several pieces of steel plates. The laminated hook provides high safety for when one individual plate has flaws, the whole hook still can work without being damaged. With the features of high safety and large dead weight, laminated hook is usually used on large lifting capacity cranes, such as, steel ladle cranes, etc.

Laminated hooks also can be classified into single laminated hooks and double laminated hooks.

3) Closed and semi-closed crane hook groups

4) Electric rotary hook

5) Other types of hook groups