Hydraulic supporting device for fully-mechanized coal driving workface

Abstract

The invention particularly discloses a hydraulic supporting device for a fully-mechanized coal driving workface, and solves the problem that no supporting device is provided for realizing synchronous and continuous operation of driving and supporting of the fully-mechanized coal driving workface at present. The device comprises a plurality of supporting top beams, wherein an oil cylinder is sleeved in each supporting top beam; adjacent ends of the oil cylinders are fixed to the supporting top beams, and the other ends of the oil cylinders are fixed with telescopic beams; a hydraulic support column is vertically fixed to one side of each telescopic beam; the upper end face of each supporting top beam is provided with a groove; sliding bodies are connected both in the groove and on the lower end face of the supporting top beam corresponding to the groove through iron chains; and each sliding body on the lower end face of the supporting top beam is provided with I steel and the upper legof the I steel slides on the sliding body. The device can keep the original stress of a tunnel and the rock formation unchanged after excavation in a short time and provide a safe environment for workers and equipment for the fully-mechanized coal driving workface so as to greatly improve the supporting effect and reduce the labor intensity; and the device has the advantages of simple processing and low cost.

Description

technical field [0001] The invention relates to a support device for tunneling in coal mine underground roadways, in particular to a hydraulic support device for fully mechanized excavation working faces. Background technique [0002] In recent years, with the heavy-duty mining equipment in underground coal mines and the upgrading of coal mining face equipment, many mines have realized "one well and one side" coal mining, and the mining efficiency has been greatly improved; however, due to the lack of fully mechanized excavation equipment Insufficient supporting facilities have led to low efficiency of fully mechanized excavation. Almost all mines are facing tension in excavation to varying degrees. Most mines currently have to adopt "multi-face protection" measures. [0003] In the underground mining process of coal mines, the tunneling operation is the prerequisite for all other operations. With the increasing popularity of fully-mechanized excavators, the single-entry lev...

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Problems solved by technology

[0002] In recent years, with the heavy-duty mining equipment in underground coal mines and the upgrading of coal mining face equipment, many mines have realized "one well and one side" coal mining, and the mining efficiency has been greatly improved; however, due to the lack of fully mechanized excavation equipment Insufficient supporting facilities lead to low efficiency of fully mechanized excavation. Almost all mines face the contradiction of tight excavation connection to varying degrees. Most mines currently have to adopt the measures of "multiple heads to protect the surface"

[0003] In the underground mining process of coal mines, the tunneling operation is the prerequisite for all other operations. With the increasing popularity of fully-mechanized excavators, the single-entry level of the fully-mechanized excavation face has greatly improved compared with the traditional "gun excavation" operation method. However, because the roadway is restricted by the rock conditions of the roof, the current fully mechanized excavation process generally adopts the following method: the fully mechanized excavation machine stops after driving 0.8-1.2 meters, and then starts the support work, using anchor rods, anchor cables or shed beams, etc. Manual support; this intermittent cycle operation method is slow, labor-intensive and low-efficiency, and cannot maximize the effectiveness of the fully-mechanized excavator. Achieving synchronous and continuous operation is a major technical problem faced by almost all coal mines

[0004] In recent years, the domestic and foreign coal mining industry has done a lot of research and attempts in this area, but there is still no support device that is effectively used to realize the parallel operation of tunneling and support in fully mechanized excavation working faces

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