Control method for automatic anti-jamming hydraulic system of rock driller

Abstract

The invention discloses a control method for an automatic anti-jamming hydraulic system of a rock driller, comprising the following steps that: firstly, an anti-jamming loop which is composed of a propel motor and a rotary motor is arranged, an oil path area which is composed of the propel motor and a propel pump is connected with a sub-system which is composed of an electromagnetic reversing valve, a one-way valve, a control oil supply pump and a handle, the part between the outer side of the rotary motor and a rotary pump is orderly connected with a pressure relay and a hydraulic control multi-way valve; and pressure oil is introduced into the multi-way valve between a rotary loop and the rotary pump, the pressure oil entering the rotary motor positively turns into an oil chamber to cause the rotary motor to rotate forwardly, the pressure relay does not move, and the oil introduced by the control pump orderly passes through the reversing valve, the control handle, and then the control multi-way valve. The control method disclosed by the invention has the beneficial effects that the method is conductive to solving the problem of jammed drilling, ensures normal drilling work of the rock driller, is capable of improving production efficiency, is conductive to improving driller movement precision and reducing wear condition, and is capable of prolonging service life and assisting driller stressing.

Description

technical field

[0001] The invention relates to the field of hydraulic technology, in particular to a control method for an automatic anti-jamming hydraulic system 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 stations, b...