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

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...

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