Leveling device for scraper conveyor

Abstract

The utility modelinvention relates to a leveling device for a scraper conveyor. The leveling device for the scraper conveyor comprises the scraper conveyor and a hydraulic support, wherein the scraper conveyor is provided with a working face chute; the hydraulic support is provided with a slide push rod; a coal mining machine is located on the scraper conveyor; the working face chute and the slide push rod are connected in a hinging way through an adjusting arm; the adjusting arm is in a bending shaftpe; a hinge hole is formed in one end of the adjusting arm; the end of the adjusting arm is connected with the working face chute in the hinging way through a pin shaft; two symmetric arms extending along bending convex arc edges are located on two sides of the other end of the adjusting arm; another hinge hole is formed in each symmetric arm; the slide push rod of the hydraulic support is located between the two symmetric arms; and the slide push rod of the hydraulic support is connected with the hinge holes of the symmetric arms in the hinging way through pin shafts. The leveling device for the scraper conveyor not only can adjust the levelness of the scraper conveyor on a lane bottom plate of a mining working face and enable a coal wall cut by the coal mining machine to be naturally vertical for reduction and prevention on the rib fall of the coal wall, but also is simple in structure, easy to operate, convenient to load and unload and low in fault rate.

Description

technical field [0001] The invention relates to the field of a coal mining scraper conveyor, in particular to a leveling device for a scraper conveyor. Background technique [0002] At present, the coal mining face of some coal mines in my country adopts the inclined longwall retreating tilt mining method, and the inclined longwall retreating tilt mining method is a fully automatic mechanized underground mining method, such as Image 6 As shown, the existing structure adopting this mining method usually includes a hydraulic support 4, a shearer 3 and a scraper conveyor 1, and the push rod 5 of the hydraulic support 4 is connected with the working surface slider 2 of the scraper conveyor 1, The coal shearer 3 is installed on the scraper conveyor 1. When working, the hydraulic support 4 is used to support the mining face, and at the same time, the scraper conveyor 1 is placed on the roadway floor 9 of the mining face. The working surface runner 2 is connected with the push rod...

AI Technical Summary

Problems solved by technology

However, the defect of the existing structure of adopting the inclined longwall retreat type tilting mining method is that, since the working surface slider of the scraper conveyor is directly connected with the push rod of the hydraulic support, it is impossible to adjust the working surface slider of the scraper conveyor. Adjust the horizontality of the coal mining machine, so that with the increase of the coal mining height and elevation angle, the coal wall 8' cut by the shearer can only be vertical to the roadway floor of the mining face, and cannot be naturally plumb. This means that after the shearer cuts, some coal hangs on the coal wall, which is very easy to cause hangers in the soft and broken coal seam area, and with the increase of the coal seam mining height, the amount of coal falling also increases. It is often easy to cause coal seam spalling and injury accidents, and there is a great potential safety hazard; especially when mining high-gas mines, due to coal wall spalling, it is easy to cause a large amount of gas gushing out, resulting in gas over-limit accidents

At the same time, the coal wall slabs also pose a safety threat to the shearer operators on the coal mining site. During the coal mine production process, there have been many accidents caused by the coal wall slabs, which have greatly threatened the safety of coal mine production and operators. personal safety

[0003] Although some manufacturers currently use hydraulic cylinders as the leveling mechanism of the scraper conveyor, it not only increases the cost of use, but also has a complex structure, cumbersome operation, inconvenient loading and unloading and use, and has a high failure rate.

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