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.
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[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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