A grouting pipe drill bit for road construction

A technology for road construction and grouting pipes, which is applied in the direction of drill bits, drilling tools, earthwork drilling and mining, etc. It can solve the problems of channel blockage and non-flow, and achieve the effect of avoiding blockage

Active Publication Date: 2020-06-02
ZUNYI NORMAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a grouting pipe drill bit for road construction to solve the problem that the residual grout in the channel does not flow and solidifies during the high-low pressure conversion process, which eventually leads to channel blockage

Method used

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  • A grouting pipe drill bit for road construction
  • A grouting pipe drill bit for road construction

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Embodiment Construction

[0015] The following is further described in detail through specific implementation methods:

[0016] The reference signs in the drawings of the description include: drill body 1, first cavity 2, high-pressure flow channel 3, first return flow channel 4, second return flow channel 5, guide hole 6, sealing cover 7, auxiliary grouting Hole 8, closed valve head 9, valve seat 10, T-shaped through hole 11, liquid inlet pipe 12, second connecting rod 13, limit block 14, second stopper 15, first spring 17, first pressure valve 18 , the second pressure valve 19, the first connecting rod 20, the high-pressure nozzle 21, the second spring 22, the drain hole 23, the drill tip 24, the first block 25, the second cavity 26, the spool 27, the liquid hole 28.

[0017] The embodiment is basically as attached figure 1 , 2 Shown: a grouting pipe drill bit for road construction, including a drill body 1, a first cavity 2 is provided in the drill body 1, and a high-pressure flow channel 3 commu...

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Abstract

The invention belongs to the technical field of engineering construction and specifically discloses a grouting pipe bit for road construction. The grouting pipe bit comprises a drill bit main body, wherein a first chamber is formed in the drill bit main body; a high-pressure runner which is connected with the first chamber is formed on the drill bit main body; a high-pressure nozzle is arranged inthe high-pressure runner; a drill tip is arranged on the lower part of the drill bit main body; a second chamber is formed in the drill bit; the first chamber is connected with the second chamber; anauxiliary grouting hole which is connected with the second chamber is formed on the drill tip; a hydraulic control cut-off unit and a grout backflow unit are arranged in the second chamber. The grouting pipe bit with such a structure is capable of solving the problem of pipeline blocking caused by the stagnation and solidification of residual grout in the channel during high / low pressure conversion process.

Description

technical field [0001] The invention belongs to the technical field of engineering construction, in particular to a grouting pipe drill bit for road construction. Background technique [0002] In the process of road construction, road drilling and road grouting are important links in the process of road construction and maintenance. In the construction process, some use drilling equipment and rotary spraying equipment to implement drilling and high-pressure jet grouting processes respectively. Although this method has a good construction effect, the construction equipment used is correct, the construction period is long, and the cost is high. [0003] The Chinese patent with the publication number CN101250983B discloses a single-pipe omni-directional drilling injection grouting drill bit which can be hydraulically controlled to open and close the auxiliary grouting hole. Low-pressure clean water or slurry can lubricate and cool the drill bit, help the drill bit to discharge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/60E21B12/00E02D15/02
CPCE02D15/02E02D2250/003E21B10/60E21B12/00
Inventor 黄川腾王正金蒲爽张政杨梨李红霞丁彬彬
Owner ZUNYI NORMAL COLLEGE
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