Intermediate wind pressure high-speed rock drilling machine

Abstract

The invention discloses an intermediate wind pressure high-speed rock drilling machine. The intermediate-wind pressure high-speed rock drilling machine comprises a machine body part, wherein one end of the machine body part is fixedly connected with a machine head part, and the other end of the machine body part is fixedly connected with a machine tail part; the machine tail part is internally provided with a water injection valve bank, the water injection valve bank is provided with an air needle and a water needle, the air needle is sleeved outside the water needle, and one ends of the air needle and the water needle, which are far away from the water injection valve bank, penetrate through a piston and are arranged on the external position close to the small diameter end of the piston.Due to adoption of the technical scheme, because the air needle and the water needle are both arranged in the piston, water injected by the air needle can not only play roles in blowing and washing ablast hole and discharging powder and dust, but also cool the machine head part; and when the intermediate-wind pressure high-speed rock drilling machine disclosed by the invention is used under the wind pressure of 0.4-1.2 Mpa, the temperature of the integral machine and key parts is ensured to be controlled below 60 DEG C, and the integral machine can normally work, and therefore, the service life of the intermediate-wind pressure high-speed rock drilling machine is prolonged, the span of the intermediate-wind pressure high-speed rock drilling machine from low wind pressure to intermediate wind pressure is realized and the work efficiency of the intermediate-wind pressure high-speed rock drilling machine is improved by 100 percent.

Description

technical field [0001] The invention relates to a pneumatic rock drill, in particular to a medium wind pressure high-speed rock drill, which belongs to the technical field of pneumatic rock drills. Background technique [0002] Pneumatic rock drill is an operating tool used for rock drilling and drilling in mining and tunneling. Its working principle is to use compressed air as the power to push the piston to reciprocate. During the stroke, the piston impacts the drilling tool to break the rock; The drilling tool rotates at a certain angle. The continuous impact and rotation make the drilling tool chisel out a circular hole in the rock to realize drilling. The air pressure of the currently used rock drill is 0.4-0.63MPa, which belongs to the low wind pressure rock drill. If the wind pressure exceeds the upper limit of 0.63MPa, the working speed of the rock drill will be greatly increased, and the wear speed of key parts will also be sharply accelerated, resulting in a serio...

AI Technical Summary

Problems solved by technology

However, its air supply pressure is generally 0.85MPa, or even 1.0MPa. Due to the limitations of the usage habits and level of users of field tunnels, or the pursuit of construction speed, they are basically used at the upper limit, resulting in excessive wind pressure for rock drills. ,The rock drilling speed is too fast, the temperature of the machine rises sharply, the failure rate increases, and even the situation that it cannot be used normally

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