Movable mining tunneling arch-shaped flexible shield support for coal mine

Abstract

The invention discloses a movable mining tunneling arch-shaped flexible shield support for a coal mine. The movable mining tunneling arch-shaped flexible shield support comprises a base and a crawler device installed at the bottom of the base; the two ends of the top of the base are connected with a top beam through two hydraulic props; the two ends of the top beam are connected with the tops of the two hydraulic props in a groove mode respectively; the top beam is in an arch shape and is bent towards the direction of a goaf area; a cushion block is fixed to the lower end of the top beam; the higher end of the top beam and the cushion block are provided with groove type limiting holes; and the tops of the two hydraulic props are connected with the two groove type limiting holes through springs respectively. The movable mining tunneling arch-shaped flexible shield support can be used for supporting and shielding a large number of rock blocks collapsed in the goaf area, has a good effect on rock blocks with broken top plates, and has good applicability to inclined and steeply inclined mining tunneling projects; the hydraulic props can buffer impact force generated when the rock blocks roll down, roof caving accidents can be effectively prevented, and the safety of mining operation is guaranteed; and the movable mining tunneling arch-shaped flexible shield support has the advantages of being good in supporting performance, easy to apply and popularize and the like, and has good practicability.

Description

technical field [0001] The invention belongs to the technical field of support for coal mine excavation and excavation, and in particular relates to a movable arc-shaped flexible protection support for coal mining and excavation. Background technique [0002] In the process of coal mining, in order to deal with the occurrence of roof fall accidents, hydraulic props are often used in engineering to support the roof. Since the roof beam of the hydraulic support is rigid, the unevenness of the direct roof will cause the unevenness of the force between the two, and the possible adverse consequences are easy to cause local roof fall accidents, and even cause large-scale roof fall accidents in coal mines. sex. [0003] In the prior art, there have also been some technical solutions for coal mine excavation and excavation protection supports, but generally the scope of application is narrow, and there are few studies on the support of inclined and steep mining excavation methods, ...

AI Technical Summary

Problems solved by technology

Since the roof beam of the hydraulic support is rigid, the unevenness of the direct roof will cause the unevenness of the force between the two, and the possible adverse consequences are easy to cause local roof fall accidents, and even cause large-scale roof fall accidents in coal mines. sex

[0003] In the prior art, there have also been some technical solutions for coal mine excavation and excavation protection supports, but generally the scope of application is narrow, and there are few studies on the support of inclined and steep mining excavation methods, the shape of the support working face is limited, and most Immovable, not conducive to the advancement of mining and excavation work, reducing work efficiency

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