hydraulic rock drill

Abstract

The invention discloses a hydraulic rock drill. The hydraulic rock drill comprises a drill body. An impact bit shank and an impact piston are arranged on the drill body along the axis. The impact piston is located at the right side of the impact bit shank. The drill body comprises a left drill body and a right drill body. The left drill body is fixedly connected with the right drill body. The left end of the left drill body is fixedly connected with a drill body left end cover. The right end of the right drill body is fixedly connected with a drill body right end cover. A gas-water external connector is arranged at the right end of the drill body right end cover. A torsion connecting sleeve and a cam rotor hydraulic motor are arranged in the left drill body. The cam rotor hydraulic motor is located at the right side of the torsion connecting sleeve. The impact piston penetrates through the cam rotor hydraulic motor, and the impact drill shank is in sliding fit with the torsion connecting sleeve. A piston left cylinder body and a piston right cylinder body are arranged in the right drill body, a reversing valve is arranged in the right drill body, the impact piston is sleeved with the piston left cylinder body and the piston right cylinder body, and the reversing valve is located between the impact piston and the piston right cylinder body. The hydraulic rock drill is small in size, reliable in work and stable in performance, construction efficiency can be improved, and the working environment can be improved.

Description

technical field [0001] The invention relates to engineering construction equipment, in particular to a hydraulic rock drilling machine used for engineering rock drilling, rock drilling, rock ore sampling and rock mass anchoring operations. Background technique [0002] At present, in the construction of drilling and blasting projects such as tunnels and mines, the commonly used rock drilling methods are pneumatic rock drilling and hydraulic rock drilling, but many shortcomings of pneumatic rock drilling and many advantages of hydraulic rock drilling have become more and more Most of them have been recognized and verified by people, especially in today's people-oriented, energy-saving and environmental-friendly, light-weight, safe and reliable hydraulic rock drills are exactly what users expect. However, the products provided by only a few well-known foreign hydraulic rock drill manufacturers not only have many problems in terms of size, supporting standards, and supply of ac...

AI Technical Summary

Problems solved by technology

However, the products provided by only a few well-known foreign hydraulic rock drill manufacturers not only have many problems in terms of size, supporting standards, and supply of accessories, but more importantly, their prices are so high that Chinese people cannot afford them.

[0003] In China, the development and production of hydraulic rock drills has only gone through nearly ten years. Although there are two or three manufacturers specializing in the production of hydraulic rock drills, their products are either imitation parts, bulky, or have too many problems. Can be improved, easy to leak and damage, can not be used normally

For example, the external valve type reversing structure hydraulic rock drill and the external rotary mechanism hydraulic rock drill common in hydraulic rock drill products at home and abroad, the structure itself determines that its volume cannot be small and compact at all.

In addition, the external nitrogen absorption device itself also makes it impossible to reduce its volume. In addition, the bladder-type rubber nitrogen diaphragm is used, which is prone to aging and cracking under repeated high-frequency and high-temperature vibrations, resulting in leakage, etc. Faults, causing product instability and affecting use

At the same time, there is a hydraulic rock drill with a follow-up reversing structure in China. Leakage due to processing errors and wear and other reasons will cause reversing failure, machine jams, crashes, etc., which seriously affect the promotion and use of hydraulic rock drills.

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