Gas extraction drilling machine with mine gas concentration detection function

Abstract

The invention relates to the technical field of coal seam drilling machines, and discloses a gas extraction drilling machine with a mine gas concentration detection function. The machine comprises a shell; a motor is fixedly connected to one side in the shell; a coupler is fixedly connected to an output shaft end of the motor; and a transmission lead screw is fixedly connected to one side of the coupler. By matching the motor, the coupler, the transmission lead screw and a gear rack, clamping and separation of a slip seat are realized, clamping and loosening of a drilling tool by a clamping device are quickly realized, and working efficiency is improved; after a slip is used for a long time, the slip can be quickly and simply opened when the clamping device stops, and detection and replacement of the slip are facilitated; and moreover, enough pretightening force can be improved for a drill rod and the drilling tool, compared with a butterfly spring, deformation and displacement cannotoccur, enough early warning force can be provided when the drill rod and the drilling tool are heavy or the drill rod shakes, and the situation that the drilling tool slips due to insufficient early warning force is avoided.

Description

technical field [0001] The invention relates to the technical field of coal seam drilling rigs, in particular to a gas drainage drilling rig equipped with mine gas concentration detection. Background technique [0002] At present, the underground gas drainage of coal mines uses a full-hydraulic power head gas drainage drilling rig with mine gas concentration detection to drill coal seams. Drilling tools to prevent drilling tools from slipping in the hole, and can also cooperate with the power head to automatically unscrew the drill pipe when necessary. The working principle of the normally closed hydraulic clamp is as follows: Figure 5 : The hydraulic cylinder is composed of a shell and a slip seat. When the shell is supplied with oil, the slip seat drives the slip seat and the slips to move axially outward under the push of the pressure oil. At this time, the orifice becomes larger and the butterfly shape The spring is in a compressed state; put in the drilling tool, stop ...

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Problems solved by technology

[0004] 1. The hydraulic clamp is mainly composed of the shell and the slip seat to form an oil cylinder, which leads to a high degree of sealing between the slip seat and the shell, so the friction of the contact part is relatively large, and the butterfly spring is compressed by oil supply. Loosening the drilling tool has a certain hysteresis, which leads to a longer time for each rod change, which is not conducive to the rapid and efficient drilling work. Secondly, due to the long-term contact between the slips and the drill pipe and drilling tools, the slips are severely worn , requires regular inspection and replacement, and oil must be supplied each time the inspection and replacement are performed, so that the slips on both sides can be separated for inspection and replacement, which not only wastes time, but also increases the workload of the staff

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