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Seesaw type hydraulic control plug reversing reset device of power tongs

A technology of power tongs and seesaws, which is applied to drilling equipment, earthwork drilling, drilling pipes, etc., can solve problems that cannot meet the needs of remote operations, and achieve the effects of simple and reliable structure, novel and ingenious design, and convenient operation

Active Publication Date: 2014-08-20
盐城特达钻采设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing power tongs are manually inserted and pulled out during the conversion, but in the remote operation or automatic operation, it is required to realize the conversion of remote screw-in and breakout. Therefore, the pin reversing and reset mechanism of the existing power tongs cannot meet the remote operation. need

Method used

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  • Seesaw type hydraulic control plug reversing reset device of power tongs
  • Seesaw type hydraulic control plug reversing reset device of power tongs
  • Seesaw type hydraulic control plug reversing reset device of power tongs

Examples

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Embodiment Construction

[0011] as attached figure 1 , 2 , shown in 3, seesaw type latch mechanism 1 is made up of column 101, right rotating arm 102, right latch 103, rocker 104, bearing pin 105, right roller 106, retaining ring 107, screw 108, left rotating arm 109, left roller 110 , left latch 111, limit screw 112, and support shaft 113. The seesaw-type latch mechanism 1 is fixed on the pliers head clamping mechanism 5 through the column 101, and is located at the center symmetrical position of the two latch holes. The rocker 104 is supported by the support shaft 113. In the column 101, both ends can swing, and the left and right rotating arms 109, 102 and the left and right bolts 111, 103 are arranged in series in the slot holes at both ends of the seesaw 104 respectively through the pin shaft 105, and the left and right bolts 111, One end of 103 passes through the hole set on the pincer clamping mechanism 5 and stretches into the left and right arc slots 401, 402 of the pincer gear 4 and can mov...

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Abstract

A seesaw type hydraulic control plug reversing reset device of power tongs comprises a seesaw type plug mechanism, a hydraulic drive ramp, a shell, a tongs head large gear and a tongs head clamping mechanism. The seesaw type plug mechanism is arranged on the tongs head clamping mechanism. The hydraulic drive ramp is fixed to the shell. The tongs head large gear rotationally drives the tongs head clamping mechanism to rotate along with a seesaw type plug. The seesaw type plug ascends and descends on the slope face of the hydraulic drive ramp, so that the position of the plug is changed, and the purposes that the screwing direction and unscrewing direction of the tongs head clamping mechanism are changed and the tongs head clamping mechanism is reset relative to the tongs head large gear are achieved. The plug climbs on the hydraulic drive ramp so that screwing direction and unscrewing direction can be converted and the remote hydraulic control purpose can be achieved. Mis-operation or the condition that the hydraulic drive ramp is not retracted in time can not affect the operation process, the operation process is conducted the same way when the hydraulic control plug reversing reset device is not installed, and the seesaw type hydraulic control plug reversing reset device has the advantages of being ingenious in structure, simple, reliable, convenient to operate and the like.

Description

technical field [0001] The invention relates to a power tong for oilfield pipes, in particular to a structure of a seesaw type hydraulic control latch reversing reset device for the power tong, and belongs to the technical field of petroleum equipment design and manufacture. Background technique [0002] A kind of power tongs for pipe is used in the threading and breaking out of tubing, casing, and drill pipe at the wellhead of the oil field, which can make the threaded connection of the above-mentioned pipe string easy to disassemble. After a make-up or breakout operation of traditional oilfield tubular power tongs, the clamping mechanism of the tong head set on the revolving body of the tong head needs to be returned to the original position (the centering position of the tong head), so that the pipe string can enter and exit. Then proceed to the next pipe string operation; in addition, it is often necessary to switch between the make-up and break-out directions during ope...

Claims

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Application Information

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IPC IPC(8): E21B19/16
Inventor 乔从华
Owner 盐城特达钻采设备有限公司
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