Intelligent large hook for mechanical workover operation

Abstract

Disclosed is an intelligent large hook for mechanical workover operation. The intelligent large hook for mechanical workover operation comprises a hook body and an automatic locking mechanism. The automatic locking mechanism is arranged on a hook tip at the position of an inlet of the hook body, and comprises a rack and a rack extension driving mechanism, wherein a guide device which guarantees the movement trail of the rack is further arranged on the two sides of the rack. The rack extension driving mechanism comprises a motor, a worm wheel and a worm, wherein the motor is connected with the worm wheel through the worm, the worm wheel sleeves a mandrel, and the worm wheel and the rack are in meshing connection. The guide device comprises hinge pins and rack movement tracks, wherein the hinge pins are installed on the two sides of the rear end of the rack, the rack movement tracks are formed inside the hook tip on the two sides of the rack, and the rack performs front-and-rear linear movement along the rack movement tracks through the hinge pins. According to the invention, a lifting ring and a lifting clamp do not need to be manually taken down or be righted, mechanical workover operation without operators on a wellhead is achieved, the work intensity of workers is reduced, the wellhead axis time is not occupied by operation, and then the efficiency of mechanical workover operation is improved.

Description

technical field [0001] The patent of the present invention relates to a hook in well workover operations in the petroleum industry, in particular to an intelligent hook for mechanized well workover operations. Background technique [0002] At present, there are two lifting lugs on both sides of the hook lower end of the common workover rig used. The lifting ring is hung on the lifting lug. The locking pin body is installed on the lifting lug to lock the lifting ring to prevent the lifting ring from being separated from the lifting lug and ensure production safety. In addition, during the workover operation, the elevators and lifting rings also need to be replaced frequently. In general workover operations, the elevators are replaced manually. , Fingers bitten by hydraulic pliers and many other potential safety hazards. For this reason, the patent No. ZL201320147544.1 has developed a mechanized workover ring switch device, which realizes the automatic removal and hanging of ...

AI Technical Summary

Problems solved by technology

In addition, during the workover operation, the elevators and lifting rings also need to be replaced frequently. In general workover operations, the elevators are replaced manually. , being bitten by hydraulic pliers and many other potential safety hazards

For this reason, the patent No. ZL201320147544.1 has developed a mechanized workover ring switch device, which realizes the automatic removal and hanging of the switch ring; however, the device has the following problems during use. Need to be in a fixed position, and the two elevators that need to be removed and hanged respectively are located on the axis of the wellhead. When picking and hanging, the hook needs to be lifted and lowered many times, which affects the overall efficiency of mechanized workover operations

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