Non-permanent coal mine underground roadway high-strength supporting device

Abstract

The invention provides a non-permanent coal mine underground roadway high-strength supporting device, and belongs to the technical field of coal mine underground supporting equipment. The non-permanent coal mine underground roadway high-strength supporting device comprises a top supporting beam, a multi-stage telescopic sleeve, a sleeve base and a vertical telescopic mechanism; the top supporting beam is a square beam; the multi-stage telescopic sleeve is composed of a plurality of sleeve bodies which are sequentially connected in a sliding and sleeved mode, the top end of the uppermost sleeve body is connected with the bottom face of the top supporting beam, and the bottom end of the lowermost sleeve body is connected with the sleeve base. The four multi-stage telescopic sleeves are located at the four corners of the top supporting beam correspondingly. The vertical telescopic mechanism is installed in the multi-stage telescopic sleeve and used for driving the multi-stage telescopic sleeve to stretch out and draw back. Various technical problems existing in a traditional permanent wind bridge can be solved.

Description

technical field [0001] The invention belongs to the technical field of coal mine underground support equipment, and specifically discloses a non-permanent coal mine underground roadway high-strength support device. Background technique [0002] In the underground construction of coal mines, when two roadways meet, generally a three-dimensional intersecting air bridge will be erected to facilitate the normal passage of vehicles and pedestrians from the upper and lower roadways, and to make the air inlet and return air flow in the roadway mutually does not affect. Permanent wind bridges are commonly used underground in coal mines. When the roadways meet, the crossed roadways are reinforced and protected. Brick walls are built on both sides of the roadway. For the bridge, planks and steel mesh are laid, concrete is poured on the bridge deck, and finally brick walls are poured. Under the bridge deck, measures such as uprights and I-beams need to be erected for temporary suppor...

AI Technical Summary

Problems solved by technology

[0004] (1) The traditional wind bridge has a huge amount of construction work and a long construction period. The temporary support facilities used during the construction period will hinder the passage of mining equipment and personnel, and affect the air flow in the roadway, posing safety risks;

[0005] (2) The construction of traditional wind bridges in large-section roadways is more difficult and dangerous, and the construction of traditional wind bridges in complex roadways will aggravate the occurrence of unsafe factors;

[0006] (3) Traditional wind bridges need to adopt a large number of auxiliary construction measures, and most of the processes have no alternative measures. The construction cost is high, and the construction materials are consumed. The materials cannot be reused, resulting in huge waste and high construction costs;

[0007] (4) The traditional wind bridge cannot be moved after it is built, and it is time-consuming and labor-intensive to disassemble. It is a one-time product and cannot be reused

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