Advanced drilling machine control system

Abstract

The invention provides an advanced drilling machine control system. The advanced drilling machine control system comprises a multi-way valve, a first hydraulic motor, a first reversing valve, a second reversing valve, a second hydraulic motor, a third reversing valve, a hydraulic chuck, a fourth reversing valve, a fifth reversing valve and a feeding oil cylinder, wherein the multi-way valve comprises a plurality of working oil ports, the multiple working oil ports are correspondingly connected with a plurality of executing elements, and the executing elements are controlled to jointly achieve the drilling, retreating and rod unloading functions of a drilling machine; a communicating oil way of the first reversing valve and the second reversing valve is controlled to be switched through the fourth reversing valve, series connection or parallel connection switching of the first hydraulic motor and the second hydraulic motor is achieved, and then the motor series connection small-torque rapid drilling function or the motor parallel connection low-speed large-torque drilling function is achieved; and meanwhile, a sequence valve is arranged between the third reversing valve and the fifth reversing valve, the communicating oil way of the fifth reversing valve is regulated and switched through the pressure effect of the sequence valve, stretching and retracting of the feeding oil cylinder are controlled, and the drilling machine drill-jamming automatic rod retreating function is achieved.

Description

technical field [0001] The invention relates to the technical field of coal mine construction, in particular to an advanced drilling machine control system. Background technique [0002] In the process of coal mine roadway construction, it is a very important construction technology before coal mining to carry out water and gas detection operations on the coal mine excavation face. Water exploration refers to the advance detection of the groundwater content of the coal mining face, in order to prevent flood accidents; gas detection refers to the advance detection of a harmful gas (gas, also known as methane) in the coal seam, which emerges from the coal seam during coal mining. It is shown that it is combustible and explosive, which will cause a large number of casualties and huge economic losses, and seriously threaten the safety of coal mine production. The gas is in two states of free and adsorption in the coal seam, and the free gas exists in the cracks and larger pores...

AI Technical Summary

Problems solved by technology

Therefore, when mining coal seams, it is necessary to carry out pre-detection and extraction of gas in coal seam sections in advance drilling operations; most of the advanced operation equipment currently used is for independent operations, and most of them are driven and controlled by hydraulic systems; the drilling of existing advanced drilling rigs The method is single, and the hydraulic drive control system used can only drill with a single speed and torque; the drilling speed and drilling torque cannot be adjusted according to the actual working conditions, and it cannot automatically retreat when encountering a stuck drill during the drilling process ;In addition, it does not have the function of automatic rod unloading

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