Double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine

Abstract

The invention discloses a double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine comprising a cutter head tunneling mechanism, a shielding device and a driving device, wherein the cutter head tunneling mechanism is used for breaking rock, the shielding device comprises a front shield, a middle shield and a rear shield, wherein the front shield, the middle shield and the rear shield are connected in sequence, the driving device is installed on the front shield, connected with the cutter head tunneling mechanism and used for driving a cutter head to rotate, the front shield and the middle shield are actively hinged, and the middle shield and the rear shield are passively hinged. The front shield and the middle shield are actively hinged, and the middle shield and the rear shield are passively hinged, namely, the shielding device is of a double-hinged-joint structure, in this way, the double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine can be adapted to the working condition that in an inclined shaft tunnel, the radius of curvature of the joint between a transitional gradient and a slope is small, cornering ability is high, and complete-machine posture adjustment is convenient.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a double-joint double-mode explosion-proof full-face rock roadheader for inclined shafts. Background technique [0002] With the rapid development of my country's economic construction, the number of tunnel projects in railway engineering, highway transportation, and coal mine construction is increasing. During the construction of long tunnels, inclined shafts are usually set up to increase the working surface and shorten the construction period. [0003] At present, in the construction of inclined shaft rock tunnels in China, the drilling and blasting method is mainly used for construction, or it is changed to vertical shaft construction, which has low construction speed and efficiency, and low safety and environmental protection. The research and development and use of roadheaders specially used for the construction of inclined shaft rock tunnels are limited. Due to the des...

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Problems solved by technology

[0003] At present, in the construction of inclined shaft rock tunnels in China, the drilling and blasting method is mainly used for construction, or it is changed to vertical shaft construction, which has low construction speed and efficiency, and low safety and environmental protection.

The research and development and use of roadheaders specially used for the construction of inclined shaft rock tunnels are limited. Due to the design of inclined shaft rock tunnels, a gentle slope section needs to be set up at intervals for the entire inclined shaft tunnel. This gentle slope section can be used as a transport vehicle. The buffer section of the long-distance downhill can reduce the burden on the braking system and can also be used as a temporary maintenance space for vehicles. The radius of curvature at the junction of the gentle slope section and the slope is small. Facing the constraints of complex geological conditions such as turning, soft top and hard bottom, conventional tunnel boring machines used in horizontal tunnels cannot adapt to this environment, and the turning ability is weak, and the attitude of the whole machine is inconvenient to adjust

[0004] In addition, rock tunnels with inclined shafts are the same as horizontal tunnels, which may cause machine jams due to stratum convergence and reduce excavation efficiency

Moreover, inclined shafts are mostly used in coal mine roadways, and coal mine roadways contain coal dust and gas. Commonly used roadheaders include electrical systems, etc. If they are used in coal mine roadway operations, catastrophic accidents will inevitably occur due to electric sparks

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