Water-saving synergic self-controlled hydraulic cutting head

Abstract

The invention discloses a self-control hydraulic cutting head with water-saving and efficiency-enhancing capabilities, which includes a cutting head body, the external contour surface of the cutting head is used for placing welding self-control hydraulic picks and ordinary picks, and the right side is equipped with The connecting flange is connected with the drive shaft through a coupling; the self-controlling hydraulic pick has a nozzle at the tooth tip, a central water channel in the middle of the tooth body, and a radial flow channel and an annular groove near the tail end. The invention can realize the self-regulation of the high-pressure water flow rate of the self-controlled hydraulic pick installed on the cutting head. During the excavation operation, the self-controlled hydraulic pick that cuts with the rock is in the high-pressure water open state to increase the rock-breaking efficiency and reduce the The pick is worn to improve the dust removal effect; the self-controlled hydraulic pick is switched to low-pressure water in the no-load state without contact with the rock, reducing the water flow and saving water resources.

Description

technical field [0001] The invention relates to a water-saving and efficiency-enhancing self-control hydraulic cutting head, which is a water-saving and efficiency-enhancing self-control hydraulic cutting head suitable for high-pressure water jet tunneling machines. Background technique [0002] At present, ordinary cutting heads rely solely on mechanical picks to break rocks, and cannot cut hard rocks. Moreover, when the cutting head performs cutting operations, the temperature of the picks is high, the wear is fast, the amount of dust is large when breaking rocks, and sparks burst out from time to time. ,There are security risks. Using high-pressure water jets to assist mechanical picks to break hard rock is one of the effective methods. However, in the existing high-pressure water jet-assisted rock-breaking technology on the cutting head, the nozzles and picks used are arranged separately. Due to the influence of factors such as the installation position of the mining ma...

AI Technical Summary

Problems solved by technology

However, in the existing high-pressure water jet-assisted rock-breaking technology on the cutting head, the nozzles and picks used are arranged separately. Due to the influence of factors such as the installation position of the mining machinery picks, nozzle target distance, pressure and other factors, the high-pressure water jets cannot be effective. Due to the cracks of the broken teeth, the energy loss is large

Due to the small working space in the well, the flow rate of the high-pressure water pump is limited, which restricts the installation quantity of auxiliary water jets, which cannot meet the requirements of high-efficiency ground consumption and crushing and the best dust reduction effect, and if there are too many high-pressure water jets, the jet flow rate in the downhole cannot be controlled. It is easy to form floods at the working face and reduce work efficiency

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