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A hydraulic rock drill anti-skid buffer system

A technology of buffer system and rock drilling machine, which is applied in the direction of reciprocating drilling rig, percussion drilling, fluid pressure actuation device, etc. It can solve the problems of insufficient impact distance, limited buffering and vibration reduction effect of air defense system, and low work efficiency. Achieve enhanced wear and corrosion resistance

Active Publication Date: 2021-10-26
SHANDONG TIANRUI HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned anti-snapshot system for hydraulic rock drills can solve the problem of air strikes of hydraulic rock drills to a certain extent, the structure is relatively simple, and it can only simply prevent the phenomenon of air strikes when returning. The system always keeps the piston with a certain resistance, and when the stroke is performed, it is easy to cause insufficient impact distance, resulting in low work efficiency, and the anti-runaway system has limited buffering and vibration damping effects

Method used

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  • A hydraulic rock drill anti-skid buffer system
  • A hydraulic rock drill anti-skid buffer system
  • A hydraulic rock drill anti-skid buffer system

Examples

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Embodiment

[0042] Example: see Figure 1-4 , a hydraulic rock drill anti-runaway buffer system, including a cylinder body 3, a reciprocating piston 1 is arranged in the cylinder body 3, and a stroke buffer device for preventing the occurrence of lost strike when the piston 1 strokes is arranged on the piston 1, so The rear of the cylinder body 3 is provided with a return stroke buffer device to prevent the piston from being lost during its return stroke.

[0043] The inner cylinder 5 is coaxially assembled on the piston 1 inside the cylinder body 3 , and a slide valve 6 for regulating the flow direction of high-pressure water is provided on the outer sliding side of the inner cylinder 5 .

[0044] A front sleeve 2 is arranged in the front portion of the inner cylinder 5 in the cylinder body 3 , and the front section of the inner cylinder 5 cooperates with the shoulder of the front sleeve 2 to fix the position of the inner cylinder 5 .

[0045] A piston front cavity 21 and a piston rear ...

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Abstract

The invention discloses a hydraulic rock drill anti-air strike buffer system, which includes a cylinder body, and a reciprocating piston is arranged in the cylinder body, and is characterized in that a buffer device for buffering the impact force of the piston stroke is arranged on the piston. The rear of the cylinder body is provided with a return stroke buffer device for buffering the impact force of the piston return stroke. The present invention adopts a wear-resistant material for the middle piston, and the surface is chrome-plated, which enhances the wear resistance and corrosion resistance of the piston; , the entire front cavity of the piston will be filled with cushioning and vibration reduction during the impact of the piston. The setting of the buffer ring can prevent the piston from directly contacting the front sleeve when the impact occurs. The effect of cushioning and vibration reduction is achieved under the double action of disc spring and disc spring.

Description

technical field [0001] The invention relates to a hydraulic rock drill anti-runaway system, in particular to a hydraulic rock drill anti-runaway buffer system used on a hydraulic rock drill to prevent the hydraulic rock drill from running away and causing damage to internal components of the rock drill, and belongs to the rock drilling machinery technology field. Background technique [0002] The hydraulic rock drill is a new type of high-efficiency rock drilling equipment. When the hydraulic rock drill is running, when the piston stroke is close to the impact point, the piston impacts forward at a very high final speed of more than 9m / s. If there is no shank tail and the piston does not hit the shank tail, it will hit the front part of the rock drill and cause destructive impact. This is the so-called "air strike phenomenon". [0003] Due to reasons such as uneven distribution of rock formations, the phenomenon of piston empty stroke often occurs when the hydraulic rock dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B1/26F15B15/22
CPCE21B1/00F15B15/226
Inventor 李永胜王维林吴赛赛杨琦王虹赵金鹏李致宇王永利郑伟刘璐
Owner SHANDONG TIANRUI HEAVY IND CO LTD
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