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Slowly-varying drilling sticking preventing simulation experimental method of rock chiseling machine

A technology for simulating experiments and rock drills, applied in the hydraulic field, can solve the problems of heavy equipment weight, complicated structure, and inefficient work, and achieve the effects of reducing wear, improving machine motion accuracy, and reducing labor intensity.

Inactive Publication Date: 2013-03-06
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

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] According to the embodiment of the present invention, the rock drilling machine anti-slow-variation sticking simulation experiment method, its main steps include:

[0011] ⑴First, start the down-the-hole drilling rig to work in the normal rock drilling state, first carry out normal propulsion, and then perform normal rotation;

[0012] ⑵Then, control the rod unloading mechanism to slowly pressurize the drill pipe, so that the rotary pressure slowly rises to 6MPa, and simulates the slowly changing drill sticking. The setting value of stuck valve is 30%;

[0013] (3) Through the test of the above steps, draw the change curve of the propulsion pressure with time in the process.

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PUM

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Abstract

The invention discloses a slowly-varying drilling sticking preventing simulation experimental method of a rock chiseling machine, and the method comprises the following steps that a down-the-hole drill device is started to work at a normal rock chiseling state and is normally rotated after being normally propelled; then a breakout mechanism is controlled to slowly pressurize a drill rod, so that the rotation pressure is slowly increased to 6MPa so as to simulate the slowly-varying drilling sticking, and the applied pressure is smaller than 20 percent of an adjustment value of a pressure relay of a rotation circuit and greater than 30 percent of an adjustment value of a jamming prevention valve; and through the test, a variation curve of the propelling pressure along the time is drawn in the process. The method has the beneficial effects that the drilling sticking problem is solved, the normal drilling work of the rock chiseling machine is guaranteed, the service life is prolonged, and the stress of a machine body can be assisted.

Description

technical field [0001] The invention relates to the technical field of hydraulic pressure, in particular to a simulation experiment method for anti-slow deformation sticking of a rock drilling machine. 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 s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/08
Inventor 解正云
Owner WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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