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Casting spliced diamond composite sheet anchor rod drill bit and connecting sleeve thereof

A technology of diamond composite sheet and anchor drill bit, which is applied in the direction of drill bit, installation of anchor rod, drill pipe, etc., to achieve the effects of simplified production process, reasonable hydraulic structure and parameters, and good cooling effect

Inactive Publication Date: 2012-02-08
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a cast plug-in diamond composite drill that can solve the problems of low production efficiency and complicated manufacturing process of the existing anchor drill bit; inconvenient loading and unloading during the anchor hole construction process, and improves the cooling effect of the drill bit body. Sheet Anchor Bit

Method used

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  • Casting spliced diamond composite sheet anchor rod drill bit and connecting sleeve thereof
  • Casting spliced diamond composite sheet anchor rod drill bit and connecting sleeve thereof
  • Casting spliced diamond composite sheet anchor rod drill bit and connecting sleeve thereof

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] see Figure 1-7 , the present invention includes a drill body 4, the drill body 4 is composed of a cutting tooth 1 and a cutting wing 2, the cutting tooth 1 is arranged on the welding surface 7 of the cutting wing 2, it is characterized in that: the lower end of the drill body 4 is connected with a connecting rod 5, The lower end of the outer wall of the connecting rod 5 is provided with a connecting pin hole 6, and the end surfaces of the two wings of the cutting wing 2 are symmetrically arranged at 180°. Two circulating medium passages 3 are arranged between each cutting wing 2, and the circulating medium passage 3 is arranged on the outside of the drill bit body 4 and its passage extends to the bottom of the outer wall of the connecting rod 5; the welding surface 7 and the vertical surface 8 of the drill bit body Angled.

[0031] ...

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Abstract

The invention relates to a casting spliced diamond composite sheet anchor rod drill bit and a connecting sleeve thereof. Although certain effects on improving and perfecting the conventional drill bit are achieved, the problems of difficulty in assembling and disassembling a drill bit and complex processing technic are not solved. In the invention, the lower end of a drill bit body is connected with a connecting rod; the lower end of the outer wall of the connecting rod is provided with a connecting pin hole; two wing end faces of cutting wings are formed oppositely and symmetrically at 180 degrees; the tops of the cutting ends of the cutting wings are circular-arc-shaped, and smoothly extend to the gauge protection ends of wing parts; two circular medium channels are formed between the two cutting wings, are formed outside the drill bit body, and extend to the bottom of the outer wall of the connecting rod; and an acute angle is formed between a welding surface and a drill bit body vertical surface. According to the invention, the early-stage manufacturing flow of the drill bit is simplified, the production efficiency is increased, the drill bit is more convenient to assemble and disassemble, and damage to drill bit cutting teeth in the assembling and disassembling processes is avoided.

Description

technical field [0001] The invention relates to a cast plug-in diamond composite sheet anchor drill bit and a connecting sleeve thereof, which are mainly used for wet (hydraulic) drilling operations on the roadway roof or two sides in coal mines, and belong to the technical field of roadway support and reinforcement. Background technique [0002] Anchor rod (cable) support is a fast-developing mine roadway reinforcement and support method in recent years. Its advantages are: active support, simple and convenient construction, and low cost of roadway support. With the development of reinforcement and support technology Development and promotion, the workload of drilling footage in the support process is also increasing. According to incomplete statistics, in 2009, the cumulative footage of various anchor holes for coal roadway support in my country was more than 100 million meters, of which it was used for coal mine roadway support The consumption of the current PDC anchor bit ...

Claims

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Application Information

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IPC IPC(8): E21B10/46E21B10/43E21B10/60E21D21/00E21B17/046
Inventor 孙荣军侯超李锁智刘刚李耿张晓亮
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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