Iron roughneck spinning wrench lifting mechanism

Abstract

The invention discloses an iron roughneck spinning wrench lifting mechanism which comprises a supporting frame assembly. Composite roller bearing sets are installed at the left side and the right sideof the supporting frame assembly; the supporting frame assembly moves up and down in a guide body assembly; composite roller bearings are mounted at the left side and the right side of a frame body assembly, and the guide body assembly moves up and down in the frame body assembly; the upper end of the guide body assembly is connected with a supporting oil cylinder; the lower end of the supportingoil cylinder is hinged with the frame body assembly through a pin shaft; a connecting seat is connected with the frame body assembly through a bolt; one end of a hoisting loop chain is fixed on a lock catch a through a connecting shaft a, the other end of the hoisting loop chain is fixed on a lock catch b through a connecting shaft b, and the lock catch b is fixed on the connecting seat through abolt; a grooved wheel is mounted on a grooved wheel shaft through a self-lubricating bearing; and the supporting oil cylinder stretches out or retracts back to achieve vertical movement of the supporting frame assembly and the guide body assembly, and therefore vertical movement of a whole spinning wrench is achieved. The iron roughneck spinning wrench lifting mechanism is simple in structure andconvenient to disassemble, assemble and maintain.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling equipment, and relates to a lifting mechanism of an iron driller's turnbuckle pliers. Background technique [0002] At present, the lifting mechanism of the iron driller's turnbuckle commonly used in oil drilling rigs has the following disadvantages due to the limitation of the design structure. One is that it is driven by a roller chain, which has a low carrying capacity and is not easy to maintain; the other is that it uses a friction plate as a guide. The friction force is large, it is easy to jam, and the synchronization of the movement of the sliders on both sides cannot be fully guaranteed; the third is that the space structure is limited, and it is not easy to maintain and install. Contents of the invention [0003] The purpose of the present invention is to provide an iron driller's turnbuckle lifting mechanism, which solves the unreasonable structure setting in the prior art,...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an iron driller's turnbuckle lifting mechanism, which solves the unreasonable structure setting in the prior art, the friction plate is used as the guide, the friction force is large, it is easy to get stuck, and the synchronization of the movement of the sliders on both sides cannot be synchronized. Complete guarantee and limited space structure, difficult to install and maintain

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