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Elastic clamping mechanism for coring drilling tool

A core drilling and snapping technology, which is used in earth-moving drilling, extraction of undisturbed core devices, etc., can solve the problems of complex structure and low operation reliability, and achieve the effect of improving stability and reliability, simple structure and stable action.

Inactive Publication Date: 2017-11-24
许坚玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing ejection mechanism for core drilling tools has the disadvantages of complex structure and low operational reliability

Method used

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  • Elastic clamping mechanism for coring drilling tool

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Effect test

Embodiment Construction

[0014] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0015] see figure 1 as shown, figure 1 It is a structural schematic diagram of an ejection mechanism for a core drilling tool provided in Embodiment 1 of the present invention.

[0016] In this embodiment, an ejection mechanism for a core drilling tool includes a recovery pipe 1 and an ejection frame 2, the ejection frame 2 is arranged in the recovery pipe 1, and the recovery pipe 1 is inside the One side of the bullet holder 2 is provided with a fishing spear assembly 3, and one end of two bullet calipers 5 is hinged on the bullet cage 2 through a first elastic pin 4, and the other ends of the two bullet jaws 5 are hinged respectively. There are a first connecting plate 6 and a second connecting plate 7, a window 8 is provided on the recovery pipe 1 in cooperation with the two bullet calipers 5, ...

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Abstract

The invention discloses an elastic clamping mechanism for a coring drilling tool. The elastic clamping mechanism for the coring drilling tool comprises a recovery pipe and an elastic clamping frame. The elastic clamping frame is arranged in the recovery pipe. A spear assembly is arranged in the position, on one side of the elastic clamping frame, in the recovery pipe. The elastic clamping frame is hinged to one ends of two elastic clamping pliers through a first elastic pin. The other ends of the two elastic clamping pliers are correspondingly hinged to a first connecting plate and a second connecting plate. A window opening matched with the two elastic clamping pliers is formed in the recovery pipe. A hinging hole is formed in the elastic clamping frame. The hinging hole is internally provided with a second elastic pin. The other ends of the first connecting plate and the second connecting plate are hinged to the second elastic pin. An elastic clamping spring is formed in the position, between the second elastic pin and the spear assembly, on the elastic clamping frame. According to the elastic clamping mechanism for the coring drilling tool, the two elastic clamping pliers are driven to be tightened or loosened through the two connecting plates, the elastic clamping mechanism is simple in structure and easy to achieve, motion of the elastic clamping pliers is more stable, and the stability and reliability of the elastic clamping mechanism are improved.

Description

technical field [0001] The invention relates to a core drilling tool, in particular to an ejection mechanism for the core drilling tool. Background technique [0002] With the continuous deepening of geological exploration and construction depth, the drilling technology of complex strata is getting higher and higher, and the construction of hard and slippery stratum is an urgent problem to be solved. Therefore, the rope percussion drilling technology is more and more widely used. The technology is a construction technology that combines wireline coring drilling technology with hydraulic percussion drilling technology. Through the principle of percussion rotary drilling, hard strata are crushed into granules or powders before drilling and coring. [0003] The ejection mechanism is an important part of the core drilling tool. When the core needs to be removed, the inner pipe assembly is separated from the outer pipe assembly by forcing the ejection caliper to shrink, so that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B25/02
CPCE21B25/02
Inventor 许坚玉
Owner 许坚玉
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