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Back-up wrench clamping device and power tongs

A clamping device and back tong technology, applied in drill pipe, casing, drill pipe, etc., can solve the problems of inaccurate control of clamping force, unreliable clamping degree, pinched sucker rod, etc., and achieve reliable lifting. flexibility, simplified connection form, and the effect of good clamping force

Pending Publication Date: 2020-09-01
HUNAN SANY PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the structure of the backup tong of the power tong is relatively complicated, and an oil cylinder or an air cylinder is used as the driving force. During the workover process in the oil field, oil leakage or slippage often occurs, which causes the back tong to fail to clamp, or the clamping occurs. Inaccurate control of the tightening force, even pinching the sucker rod and other problems, and the manufacturing cost is relatively high, and the clamping degree is unreliable

Method used

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  • Back-up wrench clamping device and power tongs
  • Back-up wrench clamping device and power tongs
  • Back-up wrench clamping device and power tongs

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0024] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention discloses a back-up wrench clamping device and power tongs, and relates to the technical field of maintenance auxiliary tools. The device comprises a mounting plate and an electric drivemechanism fixedly connected to the mounting plate, wherein the output end of the electric drive mechanism is fixedly connected to a worm; the worm is in transmission connection with a cam transmission mechanism; the cam transmission mechanism is in transmission connection with a link drive mechanism arranged on the mounting plate; two clamping heads slidably connected to the mounting plate are further arranged on the mounting plate; the two clamping heads are oppositely arranged; the two clamping heads are respectively connected to the link drive mechanism; the electric drive mechanism drivesthe worm to rotate; and the link drive mechanism drives the two clamping heads to approach each other. The connection form can be simplified and the clamping reliability is improved.

Description

technical field [0001] The invention relates to the technical field of maintenance aids, in particular to a backup tong clamping device and a power tong. Background technique [0002] At present, in the process of workover operations in oil fields, a lot of work is to connect or disassemble drill pipes, oil pipes, sucker rods and other workpieces. The connection or disassembly of oil pipes, sucker rods and other workpieces is generally done by manual use of pipe wrench or Use power tongs to do this. Manually making and breaking buckles is labor-intensive and low-efficiency. Relatively speaking, automatic power tongs have the advantages of saving time and effort. The power tong is composed of a main tong and a back tong. The main tong plays the role of clamping and rotating buckle, and the back tong plays the role of clamping and fixing. The action of the main tong and the back tong cooperate with each other to realize the make-up and breakout of the sucker rod. [0003] In...

Claims

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Application Information

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IPC IPC(8): E21B19/16
CPCE21B19/16E21B19/165
Inventor 赵俊利唐清亮马进生
Owner HUNAN SANY PETROLEUM TECH
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