Eccentric hob boring machine that does not interfere with support work and can break rock according to a predetermined path

Abstract

The invention discloses an eccentric hob type tunneling machine which does not affect the support operation and can break rocks according to a predetermined path. , sliding seat, transmission box, hydraulic motor, hob arm rotary slide device, hob arm, low-speed high-torque motor, eccentric disc hob, control center, loading device, conveying device, temporary support device and auxiliary operating platform, etc. composition. The invention has simple, compact and reliable structure, convenient installation and disassembly, fully utilizes the characteristics of low tensile strength of hard rock mass, strong rock breaking ability and high efficiency; Knife milling rock breaking load is small, high performance, high efficiency, and the eccentric rotation of the hob can make the hob achieve the effect of vibration milling rock breaking, thereby further improving the performance of hob milling rock breaking.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and relates to a tunneling mechanical equipment, in particular to an eccentric hob type tunneling machine which does not affect the support operation and can break rocks according to a predetermined path. Background technique [0002] In 2018, the "BP World Energy Statistical Yearbook" pointed out that China is still the world's largest energy consumer, accounting for 23.2% of global consumption and 33.6% of global net growth; coal resource consumption accounts for 60.4% of total consumption. For a long period of time, it has an irreplaceable position as the main energy source in our country. With the continuous increase of our country's demand for coal energy, the imbalance of mining ratio due to the difficulty of rock roadway excavation has become the main reason restricting my country's coal mining. Nowadays, with the mature application of coal mining mechanized mining, the mining efficie...

AI Technical Summary

Problems solved by technology

Especially for hard rock with a Platinum hardness coefficient f≥10, the impact and wear on the tunneling mechanism and its installed tools will be increased during construction. The effect of rock roadway excavation is poor, and the cost of excavation is high

[0003] In the existing technology, the drilling and blasting method and mechanical picks are mostly used in coal mine roadway excavation. Although the drilling and blasting method has high efficiency and strong applicability to the formation, it emits a large amount of dust and poisonous gas, and it is easy to cause gas. Major accidents such as explosions are not conducive to the safe, efficient and green mining of ore body resources

However, mechanical picks are difficult to break hard rock, and the load is heavy. The picks are easily damaged and need to be replaced frequently. The efficiency of rock roadway excavation is low and the cost is high. Downhole tests have proved that it is difficult to realize the economical excavation of hard rock roadways by cutting and breaking rocks.

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