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Self-centering shackle

A shackle oil cylinder and sliding frame technology, applied in drilling equipment, earthwork drilling, drill pipe, etc., can solve the problems of low efficiency, small shackle angle, large size of shackle, etc. The effect of large, long clamping stroke

Active Publication Date: 2016-03-30
北京先驱高技术开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides an automatic centering shackle, which solves the problems of large size, small shackle angle and low efficiency in the prior art

Method used

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Embodiment Construction

[0020] Attached below Figure 1-3 The present invention is described in further detail.

[0021] The automatic centering shackle of the present invention has an outer frame 1 on which the inner ring 11 of the limit ring is installed on the holder; the sliding frame 2 is installed inside the outer frame 1, and there are wear-resistant plates 3 on both sides of the sliding frame 2 , the wear-resistant plate 3 is in contact with the outer frame 1, and slides relative to the outer frame 1 during the working process, and the wear-resistant plate can be replaced after wear. Inside the sliding frame 2 there is a clamping cylinder 3 and a pair of slips 6, one piece of slips 6 is fixed on the piston rod of the clamping cylinder 3; Move towards each other and clamp the drill pipe. The shackle oil cylinder 8 is connected with the support 9 by a pin shaft, and the piston rod of the shackle oil cylinder 8 is connected with the outer frame 1 by a pin shaft 7 .

[0022] Two limit blocks a...

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Abstract

The invention relates to the field of exploration engineering instruments, and provides an automatic centering shackle device which comprises a support (9), a shackle cylinder (8), an external frame (1), a sliding frame (2), a clamping cylinder (4) and a pair of slips (6). The shackle cylinder (8) is fixed on the support (9), an earring of the shackle cylinder (8) is connected with the external frame (1) through a pin, the sliding frame (2) can slide in the external frame (1), the clamping cylinder (4) and the pair of slips (6) are mounted in the sliding frame (2), one slip (6) is fixed on a piston rod of the clamping cylinder (4), and the other slip (6) is fixed on the sliding frame (2). The automatic centering shackle device is simple in structure, high in shackle efficiency and convenient to use, and cost is remarkably reduced.

Description

technical field [0001] The invention relates to the field of exploration engineering equipment and provides an automatic centering shackle. Background technique [0002] The structure of the existing shackle used on drilling rigs is the same as that of the holder, but the size is large, the shackle angle is small, and the efficiency is low. Manual assisted shackles are often required, and it is difficult to realize remote control and automatic shackles, and the shackle efficiency is very low. [0003] From the perspective of cost, the existing shackle needs two clamping oil cylinders, a diverter and flow valve, a shackle oil cylinder and corresponding oil pipes, and the cost is relatively high. Contents of the invention [0004] (1) Technical problems to be solved [0005] In order to solve the above technical problems, the present invention provides an automatic centering shackle, which solves the problems of large size, small shackle angle and low efficiency in the prio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/18
Inventor 高宇清王明和钟路臧龙
Owner 北京先驱高技术开发有限责任公司
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