Combined drilling tool

A technology of combining drilling tools and drill pipes, which is applied to drill pipes, drill pipes, drilling equipment, etc. to optimize drilling operations, facilitate drilling construction, and reduce specifications and models.

Inactive Publication Date: 2011-02-16
JIKAI HEBEI MECHATRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve at least one of the problems of high cost and inconvenient construction caused by the high friction between the drill pipe and the hole wall, low efficiency, and many drill pipe specifications in the above-mentioned prior art, the present invention provides a combined drilling tool, which effectively solves the problem of The above-mentioned defects of prior art

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Embodiment Construction

[0029] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the present invention is not limited to the specific embodiments disclosed below limit.

[0031] figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , shows a structure and composition of the combined drilling tool according to the present invention, as well as the structure and connection relationship of each component. in,figure 1 The structure and composition of an embodiment of the combined drilling tool of the present invention are shown, figure 2 shows the structure of a...

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Abstract

The invention provides a combined drilling tool, which comprises a drill stem, a drill bit and a drill bit joint. The drill bit is connected with the drill stem through the drill bit joint; the drill stem is connected by drill stem sections; each drill stem section comprises an inner stem section and a hollow outer stem section; the inner stem section can be rotatably fixed in the outer stem section; the inner stem sections of the drill stem sections are connected to form an inner stem of the drill stem; the outer stem sections are connected to form an outer stem of the drill stem; the inner stem is connected with an output shaft of power machinery; and the outer stem is fixedly connected with a shell of the power machinery. For the provided combined drilling tool, the length of the drillstem can be optionally adjusted to meet the demands of different drilling depths; the outer stem is fixedly connected with the shell of the power machinery immovably; and the inner stem is connected with the output shaft of the power machinery and can rotate inside the outer stem at a high speed but does not have friction with the hole wall. Therefore, the drill bit rotates at a high speed on thepremise of no rotary friction between the drill stem and the hole wall, and the drilling speed and efficiency are greatly improved.

Description

technical field [0001] The present invention relates to a drilling tool, in particular to a combined drilling tool, and more specifically to a combined drilling tool suitable for rapid drilling in hard rock. Background technique [0002] Drilling holes in rock is a very important job in mining, construction, tunneling and other industries, such as drilling anchor holes, blast holes, etc. Drilling tools are used when drilling holes, and different drilling tools are used according to the principle of drilling. At present, there are mainly impact rotary drilling and rotary drilling. The so-called impact rotary drilling is to impact and squeeze rocks, soil, etc. through the drill bit to break them, so as to complete the drilling; Only cutting and grinding are performed on rocks, soil, etc. to complete drilling. When drilling, no matter what kind of working principle, a common feature is that the power of the power machine is transmitted to the drill bit with the drill rod to c...

Claims

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Application Information

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IPC IPC(8): E21B17/046E21B17/04E21B17/00E21B17/042
Inventor 冯春保刘水东张跃普
Owner JIKAI HEBEI MECHATRONICS TECH CO LTD
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