A self-moving advanced support device for transportation roadway in coal mining face

Abstract

The invention discloses a self-moving advanced support device for a transportation roadway in a coal mining face. It can transport sliding rails, side beam pushing cylinders, and sleeve telescopic cylinders. It consists of two support column bases, two support columns, two side support beams, two telescopic sleeves, two sets of sliding wheels, and a middle section. Supporting the top beam, two side beam push cylinders, and two sleeve telescopic cylinders can form an independent support frame, and two independent support frames can be connected by using a transportable sliding track, and multiple transportable sliding rails can be used to connect the two independent support frames. The track and multiple independent support frames can form a support frame group to support the roadway roof in a large range in front of the working face. The invention solves the non-repeated support and circular self-moving support of the advanced support area in the narrow support space of the working face transportation along the trough, and has significant advantages such as high support strength, high support efficiency, and simple support and moving process.

Description

technical field [0001] The invention relates to an advance support device for a transport roadway in a coal mining face used in a coal mine, in particular to an advance support device capable of realizing no repeated support damage to the roof of the roadway and having an automatic moving function. Background technique [0002] Article 97 of the "Coal Mine Safety Regulations" (2016 Edition) stipulates that the support must be strengthened within the influence range of the advance pressure at the connection between all safety exits and the roadway in the coal mining face, and the length of the roadway with reinforced support must not be less than 20m. Due to the general arrangement of loaders, crushers, belt conveyors and other equipment in the transportation roadway of the coal mining face, the support space within the advance support range of the roadway is very narrow, which makes the advance support of the roadway difficult. At present, the vast majority of coal mining fa...

AI Technical Summary

Problems solved by technology

Since the transport roadway of the coal mining face is generally equipped with loaders, crushers, belt conveyors and other equipment, the support space within the advance support range of the roadway is very narrow, which makes the advance support of the roadway difficult.

At present, the vast majority of coal mining face transportation roadways in my country are mainly supported by single hydraulic props, which have problems such as low support strength, high labor intensity of workers, and low support efficiency; Large-scale coal mines have tried to adopt stepping self-moving advanced hydraulic supports. This type of advanced support is that the front and back supports are mutually pushing points, so as to realize the automatic movement of the advanced hydraulic support. However, this type of advanced support has repeatedly supported the roof. The problem of rock formation damage, and it takes up a lot of space, has poor adaptability to roadway surrounding rock conditions; in recent years, mining areas with better coal seam occurrence conditions in western my country have begun to use unit-type advanced hydraulic supports for roadway advance support. This support device solves the problem The above-mentioned support method has solved the problem of repeated support damage to the roof layer of the roadway, but because the weight of a single support reaches 4-5t, it is difficult to carry it manually, and it is difficult to use mechanical equipment to carry it in a small space, and it is difficult to apply to the transportation roadway. It is used in the air return roadway and has achieved certain results

The patent application No. 201410757835.1 discloses an advanced hydraulic support without repeated support and continuous support. The method of changing the rear frame to the front frame solves the problem of repeated support damage to the roof of the roadway. However, this support device itself needs to occupy a relatively large area. Large space, and the movement mode of the rear frame of the advanced support device to the front frame requires a larger conversion space, which is difficult to apply to the transportation roadway of the coal mining face; the patent application No. 200910075084.4 discloses a self-circulating advanced Hydraulic support, but this support requires special vehicles to move, it is difficult to apply to the narrow working space of the coal mining face transportation roadway; the patent application number 201810229488.3 discloses a circulating self-moving roadway leading hydraulic support, but this support The protective device needs to arrange auxiliary suspension brackets at both ends. The auxiliary suspension brackets still have repeated support for the roof rock formation, and because the transportation route of the brackets and the columns cannot be arranged on the same line, the support and removal process of the advanced hydraulic support needs A lot of manual labor, and has a certain degree of danger

[0003] To sum up, due to the narrow space and numerous equipments for the support of the transport roadway in the coal mining face, it is difficult to advance the support of the roadway. Development and research

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