Anti-blocking method for hydraulic propulsion circuit of rock drilling machine and rotary circuit in series connection

Abstract

The invention discloses an anti-blocking method for a hydraulic propulsion circuit of a rock drilling machine and a rotary circuit in series connection. The method comprises the following steps: firstly, arranging an anti-blocking circuit comprising an impactor, a propulsion motor and a rotary motor, wherein an oil way of the impactor is connected with an impacting propulsion pump, a pressure reducing value is arranged outside the propulsion motor, and the rotary motor is connected with a rotary valve; and arranging an anti-blocking valve between the propulsion motor and the rotary motor, wherein the propulsion circuit is that pressure oil of a pump are depressurized to go into a forwarding oil-taking cavity of the propulsion motor, and return oil of the propulsion circuit and the pressure oil of the pump are combined to go into the rotary motor, thus rotary pressure become backpressure, propulsion and rotation of the propulsion motor, thereby forming a series circuit. The method provided by the invention has the beneficial effects of solving drilling-blocking problem advantageously, ensuring normal drilling operation of the rock drilling machine, improving production efficiency, strengthening movement accuracy of the rock drilling machine and reducing wear degree favorably, prolonging the service life and assisting the stress of the body of the rock drilling machine.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a method for preventing jamming in series between a hydraulic propulsion circuit and a rotary circuit 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...

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