Tunneling repeating-free support self-movement complete device for rectangular tunnel

Abstract

The invention belongs to the technical field of temporary support of an underground fully mechanized excavation face of a coal mine and aims to solve the problems of the underground temporary supportof an existing coal mine. The invention provides a tunneling repeating-free support self-movement complete device for a rectangular tunnel. The tunneling repeating-free support self-movement completedevice comprises a digging machine, a support lifting platform and a plurality of external supporting devices, wherein the external supporting devices adopt portal supports matched with a rectangulardigging tunnel; the external supporting devices are parallel to one another and stride on the digging machine to support the rectangular digging tunnel; the support lifting platform is arranged at thetop of the digging machine and can freely lift to the upper parts of the external supporting device for contacting; the external supporting devices are in contact with the support lifting platform and then can be pushed forward to the front end of the digging machine along the digging travel line along with the support lifting platform. The tunneling repeating-free support self-movement completedevice disclosed by the invention creates reliable and flexible support conditions for safe efficient excavation of the digging work face, repeating-free support of a top plate can be realized and thecompleteness of the top plate is ensured; meanwhile, the tunneling repeating-free support self-movement complete device has important significance for completing a mechanized mining technology of thedigging face, and improving the digging speed and production efficiency.

Description

technical field [0001] The invention belongs to the technical field of face-to-face support in underground fully mechanized excavation of coal mines, and in particular relates to a self-moving device without repeated support in coal roadway excavation. Background technique [0002] Before the development of the temporary support bracket for rapid excavation, the temporary supports commonly used in most of the domestic coal mine underground excavation working faces are: one is the temporary support of the hanging ring through the pipe type front beam; the other is the airborne temporary support of the roadheader The third is the use of multi-row single hydraulic struts and high-strength I-beam shed beam support methods. Although these methods have relieved the pressure of head-on support of the excavation face to a certain extent and improved the support condition of the working face, there are still many shortcomings in the actual use process, and there are still great hidde...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above-mentioned problems existing in the existing underground temporary support of coal mines, the present invention further provides a self-moving complete set of rectangular roadway excavation without repeated support

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