Ground surface crack repairing device for coal mining subsidence area

Abstract

The invention relates to the technical field of crack repairing, and discloses a coal mining subsidence area ground surface crack repairing device which comprises a vehicle body provided with a grouting mechanism, the vehicle body is connected with a left pressing plate and a right pressing mechanism which are used for extruding the ground surface, and a first height adjusting mechanism is arranged between the right pressing mechanism and the vehicle body; a top baffle and two side baffles are arranged between the left pressing plate and the right pressing mechanism, the top baffle is connected with the left pressing plate and the right pressing mechanism through soft belts, one end of each side baffle is fixedly connected with the left pressing plate, and the other end of each side baffle is connected with the right pressing mechanism in a sliding and sealing mode. A slurry blocking space is defined by the left pressing plate, the right pressing mechanism, the top baffle, the soft belt and the two side baffles. When grouting is conducted on the crack, even if the heights of the ground surfaces on the two sides of the crack are different, slurry can be blocked through the slurry blocking space, the slurry is prevented from flowing out of the ground surface with the lower height, and waste of the slurry is avoided.

Description

technical field [0001] The invention relates to the technical field of crack repair, in particular to a surface crack repair device in a coal mining subsidence area. Background technique [0002] In the process of coal mining, due to the heavy load of transport vehicles and frequent transportation, it is easy to cause road cracks, and because the bearing capacity of the surface after coal mining is greatly weakened, it is easy to cause subsidence cracking of the surface, resulting in different heights of the road on both sides of the crack. , it will cause more difficulty in driving the vehicle. At present, the treatment of surface cracks is mostly repaired by grouting. Generally, the cracks are reamed and roughened first, then the debris is cleaned, and finally the repair material is poured. [0003] For example, the application number is CN201910481815.9, the authorization announcement number is CN110080075B, and the Chinese invention patent titled "a pavement crack repai...

AI Technical Summary

Problems solved by technology

[0004] Although the pavement crack repair device provided by the above-mentioned invention patent can solve the problem of excessive crack grouting to a certain extent and improve the compactness of asphalt after grouting, its disadvantages are: the invention solves the problem of crack grouting and improves the compactness of asphalt. The solidity is mainly realized by pressing the pressure plate and the ground surface on both sides of the crack. However, since the bottom surface of the pressure plate is set in a specific shape, it can be seen from the attached figure that the bottom surface of the pressure plate is set on a plane, which can only be applied to cracks on both sides. However, in actual situations, especially in coal mining subsidence areas, it is difficult to maintain the same height of the ground surface on both sides of the crack, and it is also difficult to keep the same height difference of the ground surface on both sides of different cracks. As a result, the pressure plate with a specific shape cannot meet the ground surface on both sides of the crack at the same time, but can only fit and squeeze the ground surface with a higher height. Based on this, for the situation that the height of the ground surface on both sides of the crack is different , when grouting, asphalt will flow out from between the bottom surface of the platen and the lower ground surface to the outside, resulting in waste of asphalt

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