Henan Yuantai Crane Machinery Import&Export Co.,Ltd
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Specialize in Manufacture different kinds of crane parts
1 Application
Hook group is the most common hook device in the crane mechinary. Hook hangs on the wire rope of the lifting mechanism with the help of pulleys such parts. Hook is the most widely used among the load handling device. It has such characteristics as simple manufacture and strong usability.
2 Product category
Hooks have single hook and double hooks according to shape of hook. Five strength grades M,P,S,T,V,are classified in accordance with mechanical property. Forging hook and strap type hook are manufactured according to method of manufacturing.
3 Scraping of hook
One of following cases happens, and discard as useless.
1 flaws
2 Abrasion of dangerous fracture surface reaches 10% of full size.
3 Degree of opening adds to 15% than full size.
4 Torsional deformation exceeds 10°.
5 Dangerous fracture surface and hook neck have plastic deformation.
6 Lining of board hook abrades reaches 50% of full size, and should be discarded as useless.
7 Mandrel of board hook abrades reaches 50% of full size, and should be discarded as useless.
Crane Hook parameters:
| model | lifting load | hook head | pulley | pulley Dia. | ratio | weight kg |
| DGJ | 5t | 20#1 6Mn DG20 | HT QT Q235 | 430/450 | 2 | 128 |
| 10t | 430/450 | 3 | 230 | |||
| 16t | 565 | 3 | 377 | |||
| 20t | 565 | 4 | 489 | |||
| 32t | 680 | 4 | 835 | |||
| 50t | 785 | 5 | 1346 | |||
| 75t | 920 | 5 | 2500 | |||
| 80t | 920 | 5 | 3265 | |||
| 100t | 920 | 5 | 4964 | |||
| 100t double hook | 890 | 6 | 4425 |