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Water-cooled rock drill

A rock drill, water-cooled technology, applied in the field of water-cooled rock drills, can solve the problems of increased clearance, reduced lubrication effect, aggravated wear of parts, etc., to reduce wear, improve service life, and eliminate the effect of matching clearance.

Active Publication Date: 2018-02-09
SHANDONG TIANRUI HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase of the gap also reduces the lubrication effect and aggravates the wear of parts

Method used

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  • Water-cooled rock drill
  • Water-cooled rock drill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Examples such as figure 1 , figure 2 As shown, the water-cooled rock drill includes a head 3, and a rotating sleeve 4 is set inside the head 3.

[0049] The rotating sleeve 4 includes a first member 401 and a second member 402 that are integrally connected. Both the first member 401 and the second member 402 are cylindrical members. The first member 401 and the second member 402 are coaxially arranged. The first member 401 The outer diameter of is larger than the outer diameter of the second member 402 .

[0050] The second member 402 has an annular outer peripheral surface E1, on which there is a first annular raised portion E3 and a second annular raised portion E4, and the first annular raised portion E3 is arranged at a position close to the first member 401 , the second annular protrusion E4 is disposed at the end of the second member 402 .

[0051] A second outer circumferential groove E2 is opened on the first annular protrusion E3, and a first outer circumfe...

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PUM

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Abstract

The invention discloses a water-cooling type rock drill which comprises a machine head. A rotary sleeve is sleeved with the machine head. A fifth water cavity and a fourth cavity are formed between the outer wall of the rotary sleeve and the inner wall of the machine head. The machine head can be cooled by introducing cooling water in the fifth water cavity and the fourth cavity. By means of the scheme, the rock drill has the advantages that the temperature of the surface of the machine head can be greatly reduced, the temperature of the outer surface of the machine head can be kept about 28-32 DEG C, and harm to operators during operation is effectively avoided; influences of thermal expansion to fit clearance between the machine head and the rotary sleeve are eliminated, and vibration, caused by increased clearance, of the rock drill is reduced; abrasion of a drill rod tail sleeve hexagonal hole and the tail of a drill rod can be effectively reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to a water-cooled rock drill, in particular to a water-cooled rock drill that can be used in large quantities in coal mines, metallurgy, railways, transportation, water conservancy, infrastructure and national defense stone works. Background technique [0002] The working principle of the rock drill is: the compressed air output by the air compressor is used as the power, and the reciprocating motion of the piston is controlled by the active valve. During the stroke, the piston impacts the drill rod and the drill bit to break the rock; during the return stroke, the piston drives the drill rod and the drill bit to rotate. certain angle. The continuous impact and rotation make the drill rod and the drill bit chisel out a circular hole in the rock. [0003] The rotary motion of the rock drill is output to the shank of the drill rod through the shank shank in the rotating sleeve, and the drill rod drives the drill bit to rotate, so t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B6/06
CPCE21B6/06
Inventor 李永胜王维林张凤琴王秋景李致宇陈安金李真真
Owner SHANDONG TIANRUI HEAVY IND CO LTD