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Mine bolt hole internal reamer

An anchor hole and hole reamer technology, applied in drilling equipment and methods, earthwork drilling, drill bits, etc., can solve the problems of difficult tool recovery, unstable hole reaming, poor hole reaming performance, etc. Stable, safe and efficient mining and support, low cost effect

Active Publication Date: 2018-11-23
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the problem of bolt slipping and instability, some scholars try to solve this problem by reaming the bolt hole. Unstable holes, difficult tool recovery, etc.

Method used

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  • Mine bolt hole internal reamer
  • Mine bolt hole internal reamer
  • Mine bolt hole internal reamer

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] like Figure 1-Figure 3 As shown, the internal reamer of the mine bolt hole of the present invention includes a reaming tool, a casing 1, a push-pull rod 2, a drilling rig connecting shaft 3 and a manual hydraulic jack 4, and the push-pull rod 2 is coaxially arranged on the casing 1 Inside, the casing 1 and the push-pull rod 2 are arranged horizontally along the front-to-back direction, the rear end of the reaming tool is connected to the front end of the push-pull rod 2, and the center of the front side of the casing 1 is symmetrically provided with two long lengths that are all set along the axial direction of the casing 1. Hole 5, the front end of casing 1 is provided with a top pressure structure for driving the reaming tool to extend radially out of long hole 5, and the rear end of casing 1 is coaxially fixedly connected with a guide cylinder 6 with an inner diameter larger than casing 1. The rear end of the cylinder 6 is fixedly connected with the installation cyl...

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Abstract

Internal reamer for mine bolt hole, including reaming tool, casing, push-pull rod, drilling rig connecting shaft and manual hydraulic jack. The rear end of the casing is fixedly connected with the guide cylinder and the installation cylinder in sequence in the same axial direction. The manual hydraulic jack is fixedly arranged in the installation cylinder. The rear end of the installation cylinder is fixedly connected with the axial direction, and the inner wall of the casing is fixedly provided with at least two guide sleeves which are both sleeved on the outside of the push-pull rod. The invention has the advantages of simple operation, low cost, stable hole reaming performance, and the cutter can be actively opened and effectively recovered. It can effectively solve the problem of bolt failure caused by slippage and instability between the bolt and the hole wall, improve the safety situation of the mine, improve the production efficiency of the mine, and is of great significance to the safe and efficient mining and support of the mine.

Description

technical field [0001] The invention belongs to the technical field of roadway support, and in particular relates to a hole reamer inside a mine bolt hole. Background technique [0002] Bolts used in underground roadway support have the characteristics of simple structure, convenient construction, and strong adaptability. Therefore, bolt support has become the main way of roadway support in recent years, but in the engineering application of bolt support, the failure form of the bolt is mainly due to the coal adhered to the hole wall during the anchoring process during the support process. The sliding between the anchor rod and the hole wall becomes unstable when the rock is gray or broken and soft. [0003] In view of the problem of bolt slipping and instability, some scholars try to solve this problem by reaming the bolt hole. Unstable holes, difficult tool recovery and other issues. Therefore, it is a new direction to propose a reaming drill pipe that is easy to use an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/28E21B10/32
CPCE21B7/28E21B10/325E21B10/32E21B7/30
Inventor 南华宋明洋孔赛博
Owner HENAN POLYTECHNIC UNIV
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