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Hydraulic anti-sticking method of rock drill propulsion loop

A rock drilling machine and circuit technology, which is applied in the hydraulic anti-jamming field of the rock drilling machine propulsion circuit, can solve the problems of heavy equipment weight, low work efficiency, complicated structure, etc., reduce wear, reduce labor intensity, and improve machine movement accuracy Effect

Inactive Publication Date: 2013-02-27
WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hydraulic system components have many problems from different perspectives such as operation methods, working methods, and complicated structures, which lead to inefficient work, heavy equipment weight, and high costs

Method used

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Examples

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Comparison scheme
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Embodiment Construction

[0011] The hydraulic anti-jamming method of the rock drilling machine propulsion circuit described in the embodiment of the present invention, its main steps include:

[0012] (1) First, install a hydraulic control reversing valve between the working propulsion cylinder and the hydraulic motor, and at the same time, install another hydraulic control anti-seize valve between the outer end of the hydraulic control reversing valve oil circuit and the propulsion cylinder;

[0013] (2) The end of the anti-seize valve is connected to a hydraulic control circuit and connected to the hydraulic control valve. One of the other two circuits of the hydraulic control valve is connected to the propulsion circuit, and the other is connected to the rotary circuit through the hydraulic control circuit;

[0014] ⑶ When the drill sticks, the rotary pressure immediately rises. When the pressure exceeds the rated pressure, adjust the anti-stick valve to change direction in time to make the rock dri...

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Abstract

The invention discloses a hydraulic anti-sticking method of a rock drill propulsion loop. Firstly, a hydraulic control reversing valve is arranged between a working propulsion oil cylinder and a hydraulic motor, and meanwhile, a hydraulic control anti-sticking valve is additionally arranged between the outer end of an oil passage of the hydraulic control reversing valve and the propulsion oil cylinder. The end of the anti-sticking valve is connected with a hydraulic control loop, and is connected with the hydraulic control valve, one of two loops of the hydraulic control valve is connected with a propulsion loop, and the other of the two loops of the hydraulic control valve is connected with a rotary loop by the hydraulic control loop. The hydraulic system is provided with an anti-sticking loop which is connected with a rock impact system, and then a rock drill is automatically in the light impact state. Meanwhile, a valve core of an upper slide valve of the hydraulic control valve is provided with a sealing structure. The hydraulic anti-sticking method has the beneficial effects that the drill sticking problem is favorably solved, the normal drilling operation of the rock drill is ensured, the production efficiency is improved, the operation precision of the machine is favorably improved, the abrasion condition is favorably reduced, the service life is prolonged, the force on a machine body is assisted to bear, and the like.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a hydraulic anti-blocking method for a rock drilling machine propulsion circuit. Background technique [0002] The hydraulic system has the advantages of large power, good adjustability of working pressure and flow, and heat can be brought back to the oil tank. The hydraulic system device can generate more power than other devices. Under the same power, the hydraulic device is small in size, Light weight, high power density, compact structure. The down-the-hole drilling rig is a kind of engineering machinery for drilling minerals and rocks. It is a device in which the impactor dives into the hole and directly impacts the drill bit, and the rotary mechanism drives the drill pipe to rotate outside the hole to drill into the rock. It is mainly used for open-pit mining, Rock drilling in various projects such as building foundations, water conservancy, power stations, building mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/113
Inventor 解正云
Owner WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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