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Novel tunnel drilling tool

A technology for tunnels and drilling tools, which is applied in the direction of earthwork drilling and extracting undisturbed core devices, etc., which can solve the problems of difficult construction, difficult delivery and salvage of tunnel drilling tools, etc., and achieve high salvage success rate, fast delivery speed, increased The effect of high delivery speed

Inactive Publication Date: 2017-05-03
天津华勘钻探机具有限公司
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AI Technical Summary

Problems solved by technology

The application of rope coring technology in tunnel horizontal exploration will greatly improve drilling efficiency. It is undoubtedly an effective technical means for replacing resource prospecting in old mining areas; ; while the surface rope core drilling tools are not suitable for coring drilling construction in horizontal tunnels, and the existing tunnel drilling tools are not easy to deliver and salvage; the construction is difficult

Method used

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Embodiment Construction

[0024] Such as Figure 1 to Figure 5 The new tunnel drilling tool shown includes a single-action double-layer core pipe and an overshot; the single-action double-layer core pipe includes an outer pipe assembly and an inner pipe assembly arranged inside the outer pipe assembly;

[0025] The outer tube assembly includes a centralizer 1, an ejection chamber 2 arranged on the front side of the centralizer, and a seat ring 3 arranged on the front side of the ejection chamber; and an outer pipe 4 arranged on the front side of the seat ring; And be arranged on the inner tube fixer 5 of outer tube rear side; And be arranged on the lower reamer 6 of inner tube fixer front side; And be arranged on the drill bit 7 of lower reamer front side; Described inner tube fixer realizes The guidance of the inner tube keeps the inner and outer tubes coaxial, so that the rock (mine) core enters the spring seat and the inner tube;

[0026] The inner tube assembly includes a hinged spearhead mechanis...

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Abstract

The invention discloses a novel tunnel drilling tool comprising a single-action double-layered basket barrel and a fisher. The single-action double-layered basket barrel comprises an outer pipe assembly and an inner pipe assembly arranged on the inner side of the outer pipe assembly, wherein the outer pipe assembly has a centering device, an ejecting clamping chamber arranged on the front side of the centering device, a seat ring arranged on the front side of the ejecting clamping chamber, an outer pipe arranged on the front side of the seat ring, an inner pipe fixer arranged on the back side of the outer pipe, a lower reamer arranged on the front side of the inner pipe fixer and a drill bit arranged on the front side of the lower reamer; the inner pipe assembly has a hinge-chain type spearhead mechanism, an ejecting clamping mechanism, a pumping mechanism, a suspension mechanism and a basket barrel block alarm mechanism; and the fisher has a fishing mechanism and a safe de-clamping mechanism. Quick pumping releasing speed is achieved; the drilling tool cannot be clamped and high fishing success rate can be achieved; when the drilling tool is applied to ground construction, to increase releasing speed, a pumping mechanism valve can be detached and matched with a common fisher for use.

Description

technical field [0001] The invention relates to a drilling tool, in particular to a novel tunnel drilling tool, which belongs to the technical field of tunnel drilling tools. Background technique [0002] Tunnel drilling tools are used for high-inclination and horizontal wireline core drilling; using tunnel exploration for deep resource exploration can save time and workload and effectively improve work efficiency. The application of rope coring technology in tunnel horizontal exploration will greatly improve drilling efficiency. It is undoubtedly an effective technical means for replacing resource prospecting in old mining areas; ; And ground rope coring drilling tools are not suitable for coring drilling construction in horizontal hole tunnels, and existing tunnel drilling tools are not easy to deliver and salvage; the construction is difficult. Contents of the invention [0003] (1) Technical problems to be solved [0004] In order to solve the above problems, the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B25/00
Inventor 王成良彭得利储召宜
Owner 天津华勘钻探机具有限公司
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