Top coal caving hydraulic support mining equipment

Abstract

The invention relates to the technical field of a top coal caving hydraulic support, and particularly relates to a top coal caving hydraulic support mining equipment. A coal caving plate is hinged tothe inner side of a coal caving control plate, an angle between the coal caving plate and the coal caving control plate is adjustable, the coal caving plate can extend upwards out of the top end faceof the coal caving control plate, falling of coal sheets on the coal caving control plate can be realized through the coal caving plate, a plurality of vibration swing coal falling mechanisms are arranged on the top end face of the coal caving plate, the vibration swings coal falling mechanisms can swing in a certain angle, auxiliary coal caving can be well achieved without lifting a hydraulic column on a base, only partial coal sheets need to be oscillated, auxiliary falling of the coal can be well achieved, an falling angle can be effectively controlled, coal protection mechanisms are arranged on the two sides of a top coal caving top plate, an included angle between the coal protection mechanisms and the top surface of the top coal caving top plate is adjustable, the angle of the coal block falling down can be accurately controlled, and the top coal caving precision is improved.

Description

technical field [0001] The invention relates to the technical field of top-coal caving hydraulic support, in particular to mining equipment for top-coal caving hydraulic support. Background technique [0002] The top-coal caving hydraulic support is developed on the basis of the common longwall working face hydraulic support. It has the same functions in controlling the basic items, maintaining the direct top, self-moving and pushing conveyors, but the top-coal caving mechanism and the support are affected by The functions of power, head support, dust reduction and other aspects are different. The advantages of the top coal caving hydraulic support are stable support, continuous coal opening, less back loss, good coal caving effect, small equipment investment and high cost performance for thick coal seam mining. It is suitable for thick coal seams with coal seams below medium hardness, with obvious or well-developed joints and fissures. The current top-coal hydraulic suppo...

AI Technical Summary

Problems solved by technology

At present, when coal is discharged, the coal is only realized by the sliding of the coal itself, and when the coal is slipping, the overall adhesion is prone to occur, which makes it difficult for the coal to directly slip. At present, it is necessary to drive the hydraulic column at the lower part of the coal hydraulic support Realize fine-tuning and lifting, and then realize the slippage of the coal seam. In this way, because the hydraulic column needs to lift or drop all the upper coal seam, the driving force is extremely large, causing damage to the hydraulic column and affecting the service life.

In addition, when coal is discharged, the coal blocks are easy to fall on both sides of the roof, resulting in the problem of poor coal discharge angle

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