Gas-hydraulic drilling rig for coal mine

Abstract

The invention discloses a coal mine gas-liquid linkage drilling rig which comprises a main machine assembly and a gas-liquid system. The gas-liquid system controls the main machine assembly and is connected with the main machine assembly. The main machine assembly comprises a main machine, an auxiliary support and a stand column assembly. The main machine is used for drilling and is fixed on the stand column assembly. One end of the auxiliary support is hinged to the main machine, and the other end of the auxiliary support is fixed on a stand column through a hinged base. The main machine, the auxiliary support and the stand column assembly constitute a triangular stable structure. The gas-liquid system comprises a water tank, a pneumatic booster pump, an operation table and a gas-liquid pipeline. The main machine, the stand column assembly, the water tank and the operation table are connected through the gas-liquid pipeline, and the pneumatic booster pump is connected to the middle of the gas-liquid pipeline. According to the coal mine gas-liquid linkage drilling rig, compressed air is used for driving the pneumatic booster pump to inject water into the stand column, supporting is provided, and automatic pressure supplement can be achieved. The compressed air is used for pressing water in the water tank into an oil cylinder, fast forwarding and fast reversing of the oil cylinder are achieved, and the drilling efficiency is improved. The coal mine gas-liquid linkage drilling rig is low in weight, simple in structure, convenient to move and suitable for rock layers of various hardnesses.

Description

technical field [0001] The invention relates to a gas-hydraulic linkage drilling rig for coal mines, belonging to the field of coal mine machinery and equipment. Background technique [0002] In the prior art, hydraulic drilling rigs and pneumatic drilling rigs are mainly used for water exploration and gas exploration in coal mines. [0003] The first type, the hydraulic drilling rig mechanism is more complex, mainly including the main engine and hydraulic pump station. The overall mass is relatively large, and it needs electricity to provide power. It needs to drag a long cable during work, and it is extremely inconvenient and unsafe to move underground. Moreover, the power comes from the motor-driven hydraulic pump, which requires hydraulic oil medium to transmit power, and the drilling cost is high. Once the hydraulic oil leaks, it will pollute the environment. [0004] The second type, the pneumatic drilling rig, has a small propulsion force and cannot reach the requir...

AI Technical Summary

Problems solved by technology

[0003] The first type, the hydraulic drilling rig mechanism is more complex, mainly including the main engine and hydraulic pump station

The overall mass is relatively large, and it needs electricity to provide power. It needs to drag a long cable when working, and it is extremely inconvenient and unsafe to move underground.

Moreover, the power comes from the motor-driven hydraulic pump, which requires hydraulic oil medium to transmit power, and the drilling cost is high. Once the hydraulic oil leaks, it will pollute the environment

[0004] The second type, the pneumatic drilling rig, has a small propulsion force and cannot reach the required drilling depth when encountering hard rock.

When advancing, the noise is loud, which is not conducive to the health of workers

The pneumatic pump is directly used to provide propulsion and retreat, which not only consumes a lot of air, but also cannot realize fast forward and fast rewind with small load or no load; while the pneumatic column has a small tightening force, the mechanical column cannot automatically replenish pressure, and the supporting column exists during drilling. Security risks

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