A direction-controllable hydraulic-assisted rock breaking mechanism and its cutting method

Abstract

The invention proposes a direction-controllable hydraulic auxiliary rock-breaking mechanism and its cutting method. The mechanism includes a cutting main shaft, a sealing shaft is installed in the cutting main shaft and a hob is fixed at one end; the cutting main shaft, the sealing shaft Both are connected with a motor; a sealed shaft axial flow channel is opened in the sealed shaft, and a sealed shaft radial flow channel and a sealed shaft arc-shaped grooved flow channel are opened in the near-knife section of the sealed shaft; the sealed shaft axial flow channel , the sealing shaft radial channel, and the sealing shaft arc-shaped groove channel are connected in turn; the hob is provided with a number of hob cutter body jet flow channels that run through the cutter body, and the plane where the hob cutter body jet flow channel is located is the same as the sealing shaft circle. The planes where the arc-shaped groove runners are located are coincident. In the present invention the seal shaft, cutting spindle and hob cooperate to provide a rotating abrasive jet that pre-slits where the hob meets the rock, and then the rotating hob squeezes the rock along the pre-cut slit body to complete the efficient vibration cutting and crushing of rock, which improves the crushing efficiency of rock mass.

Description

technical field [0001] The invention belongs to the technical field of rock breaking, and in particular relates to a direction-controllable hydraulic auxiliary rock breaking mechanism and a cutting method thereof. Background technique [0002] The energy industry is the basic industry of the national economy, and it is also a technology-intensive industry. In my country's resource consumption, the consumption of coal resources has always accounted for the main body of the total consumption, and my country's energy is characterized by more coal and less oil, so it will have an irreplaceable position as the main energy source of our country for a long period of time in the future. The rapid development of my country's economy in recent years has led to an increasing demand for coal energy. Nowadays, my country's coal mining has gradually developed to deep and complex strata, which brings difficulties in rock roadway excavation and leads to the imbalance of mining ratio, which...

AI Technical Summary

Problems solved by technology

However, in the excavation construction of hard rock mass, the existing equipment has problems such as serious wear and shedding of the ball teeth, low rock breaking efficiency and large amount of dust, which greatly reduces the mechanical impact rock breaking ability, efficiency, service life and reliability of the equipment. How to achieve safe and efficient crushing of hard coal rocks has become a key issue and difficulty in the efficient development of deep and complex stratum coal and other ore body resources

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