The invention provides a suspension arm protection device, a lifting appliance and a lifting system. The suspension arm protection device comprises a body and a first telescopic rod, one end of the first telescopic rod is telescopically mounted on the body, the other end of the first telescopic rod is provided with a first connecting part used for being fixedly connected with a suspension arm, theend, away from the first telescopic rod, of the body is provided with a second connecting part fixedly connected with the other suspension arm, according to the suspension arm protection device, thelifting appliance and the lifting system, the distance between the two suspension arms can be limited in the preset size, when the suspension arms and lift subs are separated due to non-in-place inserting of an inserting pin and the other reasons, one suspension arm can be located in the preset size around the other suspension arm all the time under the effect of a suspension arm protection device, the phenomenon that the suspension arms fly out to hit a worker can be avoided, and the well drilling work safety is improved.
本发明提供一种吊臂保护装置、吊具及起吊系统,其中,吊臂保护装置包括:本体以及第一伸缩杆,第一伸缩杆的一端可伸缩地设置在本体上,第一伸缩杆的另一端设置有用于与一个吊臂固定连接的第一连接部;本体背离第一伸缩杆的一端设置用于与另一吊臂固定连接的第二连接部。本发明提供的吊臂保护装置、吊具及起吊系统,可以使两个吊臂之间的距离限定在预设尺寸内;当由于插接销插接不到位等原因造成吊臂与吊卡分离时,该吊臂能够在吊臂保护装置的作用下,始终位于另一个吊臂周围的预设尺寸内,从而避免该吊臂高速向外飞出而打伤工作人员的现象发生,提高了钻井作业的安全性。
Suspension arm protection device, lifting appliance and lifting system
吊臂保护装置、吊具及起吊系统
2020-09-08
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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