Double drilling rod drive apparatus and double drill rod mash gas outburst prevention drill

Abstract

The invention discloses a dual-drill stem transmission gear and a dual-drill stem gas outburst-preventing drill. The dual-drill stem transmission gear is provided with a transmission gear shaft in a box body; the box body is provided with a hollow external gear shaft therein; the external gear shaft and the box body are rotationally and hermetically connected; an internal gear shaft is sheathed and fixed with the internal hole of the dual-drill stem transmission gear by a bearing; a limiting mechanism is arranged between the internal hole and the internal gear shaft; the external gear shaft and the internal gear shaft are provided with transmission gears which are meshed with two transmission gears arranged on the transmission gear shaft; and the transmission gear shaft is connected with a power machine. The dual-drill stem gas outburst-preventing drill further comprises a machine frame, and an elevating positioning mechanism which are connected to a vertical support frame; the vertical support frame is provided with a sliding track; the sliding track is provided with a sliding plate; the sliding track and the sliding plate are in slip fit. The box body of the dual-drill stem transmission gear is arranged on the sliding plate; and a propeller hydraulic cylinder is arranged between the box body and the sliding plate. The invention has novel design, compact structure, high efficiency, excellent gas discharge effect, convenient usage, and excellent social and economic benefits.

Description

1. Technical field:

[0001] The invention relates to a composite plate, in particular to a double drill rod transmission device and a double drill rod gas outburst prevention device. 2. Background technology:

[0002] China is a large energy country with huge coal reserves, so coal is one of the main energy sources in our country. However, there are many hidden safety hazards in coal mining, and accidents of mine destruction and death occur from time to time, which have brought huge losses to the country and people's lives and property. Among them, gas outburst is the most serious natural disaster that threatens the safe production of coal mines. In view of this situation, domestic coal mines generally adopt the method of pre-drilling gas release holes in advance to prevent the problem of gas outburst in tunneling face. At present , The drilling rigs used for drilling and releasing holes in the excavation working face mainly include portable anti-outburst drilling rigs and hy...

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