CN221220512U - Temporary supporting structure for coal mine tunnel - Google Patents

Abstract

The utility model discloses a temporary supporting structure of a coal mine tunnel, which comprises a plurality of groups of arc-shaped top plates, wherein each group of arc-shaped top plates is two, the two arc-shaped top plates can be folded, and the corresponding side baffle plate and the corresponding second telescopic frame can be folded and folded as well, so that an operator can conveniently take the tunnel, and meanwhile, when the tunnel is installed, the structure is unfolded, then the first telescopic frame, the second telescopic frame and the cross arm can be directly assembled without redundant tools, and meanwhile, the side baffle plate is further provided with a positioning pin, so that the side baffle plate and the inner wall of the tunnel can be further fixed, the device can be conveniently and simply taken and disassembled to install while the supporting force is ensured, and the working efficiency is improved.

Description

Temporary supporting structure for coal mine tunnel

Technical field:

the utility model relates to the field of coal mining production, in particular to a temporary support structure for a coal mine tunnel.

The background technology is as follows:

Coal mines are areas where mankind is mining coal resources in coal-rich mining areas, and are generally classified into underground coal mines and open pit coal mines. When the coal seam is far from the earth surface, coal is generally selected to be extracted from underground mining roadways, which is an underground coal mine. When the distance between the coal seam and the ground surface is very short, the earth surface soil layer is generally stripped directly to excavate coal, and the coal is an open pit coal mine.

Underground mining accounts for 60% of world coal mine production. In a pit, a room column method is typically used to propel through the coal seam, with beams and columns being used to support the pit.

In the coal mining process, a supporting structure is required to be arranged for preventing the roadway from collapsing and protecting the safety production of workers, but in the roadway opening process, a temporary supporting structure is often used for being used as a temporary support, so that the subsequent installation and erection of the protective supporting structure are convenient.

The existing temporary supports are mostly of steel structures, are inconvenient to install integrally, and are inconvenient to install and detach when entering and taking out a roadway integrally, and the working efficiency is affected.

The utility model comprises the following steps:

The utility model aims to provide a temporary support structure for a coal mine tunnel.

The utility model is implemented by the following technical scheme:

The utility model provides a colliery tunnel temporary support structure, including multiunit arc roof, every arc roof of group is two, two arc roof pass through the articulated elements and articulate, the bottom of every arc roof all articulates there is the side shield through the articulated elements, the first positioning tube of the equal fixedly connected with in bottom of every side shield, all insert the first expansion bracket of sliding connection in every first positioning tube, all have the second expansion bracket on the inner arc wall of every arc roof through the articulated elements articulated, the lateral wall department of every side shield equal fixed mounting has the second positioning tube, the one end of every second expansion bracket all stretches into in the corresponding second positioning tube and with its sliding connection, the lateral wall department of every side shield equal fixed mounting has the third positioning tube, the bottom of every third positioning tube communicates with each other with the external world, insert the cross arm between the corresponding two third positioning tubes, all the spiro union has two locking screw thread section of thick bamboo on every cross arm, every locking screw thread section of thick bamboo all overlaps outside corresponding first positioning tube and rather than sliding connection, all be provided with the adjacent arc spout on every arc roof on the wall, all be provided with the arc spout of L type on the adjacent arc roof, it inserts the common slide bar to set up.

Preferably, the outer wall of the slide bar is wrapped with extruded rubber, and the end parts of two adjacent slide bars are arranged in a fitting way.

Preferably, the first telescopic frame and the second telescopic frame are both composed of an inner cylinder and an outer cylinder, and the inner cylinder is in threaded connection with the outer cylinder.

The utility model has the advantages that: the two arc-shaped top plates can be folded, the corresponding side baffle plates and the second telescopic frame can be folded and folded equally, so that an operator can conveniently take the arc-shaped top plates, the structure is unfolded during installation, then the first telescopic frame, the second telescopic frame and the cross arm are directly assembled, redundant tools are not needed, the positioning pins are further arranged at the side baffle plates, the side baffle plates can be further fixed with the inner wall of a roadway, the supporting force is ensured, and the device can be conveniently and simply taken and disassembled for installation, so that the working efficiency is improved.

Description of the drawings:

fig. 1 is a schematic view of the structure of the present utility model.

In the figure: arc roof 1, side shield 2, first locating section of thick bamboo 3, first expansion bracket 4, second expansion bracket 5, second locating section of thick bamboo 6, third locating section of thick bamboo 7, cross arm 8, locking screw section of thick bamboo 9, spout 10, slide bar 11.

The specific embodiment is as follows:

As shown in fig. 1, the temporary supporting structure for the coal mine tunnel comprises a plurality of groups of arc-shaped top plates 1, two arc-shaped top plates 1 are hinged through hinging pieces, the bottom end of each arc-shaped top plate 1 is hinged with a side baffle plate 2 through hinging pieces, the bottom end of each side baffle plate 2 is fixedly connected with a first positioning cylinder 3, a first telescopic bracket 4 in sliding connection is inserted into each first positioning cylinder 3, a second telescopic bracket 5 is hinged on the inner arc wall of each arc-shaped top plate 1 through hinging pieces, a second positioning cylinder 6 is fixedly arranged at the side wall of each side baffle plate 2, one end of each second telescopic bracket 5 extends into the corresponding second positioning cylinder 6 and is in sliding connection with the corresponding second positioning cylinder, a third positioning cylinder 7 is fixedly arranged at the side wall of each side baffle plate 2, the bottom end of each third positioning cylinder 7 is communicated with the outside, a cross arm 8 is inserted between the corresponding two third positioning cylinders 7, two locking thread barrels 9 are in threaded connection with each cross arm 8, each locking thread barrel 9 is sleeved outside the corresponding third positioning barrel 7 and is in sliding connection with the corresponding third positioning barrel, sliding grooves 10 are formed in the inner arc wall of each arc-shaped top plate 1, sliding rods 11 are jointly inserted into the sliding grooves 10 formed in each adjacent arc-shaped top plate 1, when the cross arm is installed, the folded two arc-shaped top plates 1 are unfolded, a complete arc is formed, then the two side baffles 2 are unfolded, a plurality of first telescopic frames 4 are used for extending into the first positioning barrels 3 to support and limit, an initial state is kept, further, in order that the two arc-shaped top plates are kept on the same plane, the cross arm 8 is inserted into the two third positioning barrels from the bottom, then the two locking thread barrels 9 are rotated, the two locking thread barrels 9 are enabled to rotationally move, and are sleeved outside the third positioning barrel 7 which is opposite to the first locking thread barrels, so that the overall stability can be further enhanced while the level of the two arc-shaped top plates 1 is ensured, on the basis, the second telescopic frame 5 is also telescopic, one end of the second telescopic frame 5 stretches into the corresponding second positioning barrel 6 to form an inclined state, the overall stability is further enhanced, finally after each group of arc-shaped top plates 1 are completely and preliminarily fixed, the sliding rod 11 slides into the sliding groove 10, and therefore, staggered brackets are also arranged between the two adjacent groups of arc-shaped top plates 1, the stability is ensured, meanwhile, the two adjacent groups of arc-shaped top plates 1 are connected, and finally, according to the actual use condition, a positioning pin is selectively inserted into the inner wall of a roadway to be further enhanced and fixed.

The outer wall of the slide bar 11 is wrapped with extruded rubber, and the end parts of two adjacent slide bars 11 are arranged in a fitting way.

The first telescopic frame 4 and the second telescopic frame 5 are both composed of an inner cylinder and an outer cylinder, and the inner cylinder is in threaded connection with the outer cylinder.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (3)

1. The utility model provides a colliery tunnel temporary support structure which characterized in that: including multiunit arc roof, every group arc roof is two, two arc roof passes through the articulated elements and articulates, the bottom of every arc roof all articulates through the articulated elements has the side shield, the first positioning tube of the equal fixedly connected with in bottom of every side shield, all insert the first expansion bracket of sliding connection in every first positioning tube, all articulate the second expansion bracket through the articulated elements on the interior arc wall of every arc roof, the lateral wall department of every side shield all fixed mounting has a second positioning tube, the one end of every second expansion bracket all stretches into in the corresponding second positioning tube and rather than sliding connection, the lateral wall department of every side shield all fixed mounting has a third positioning tube, the bottom of every third positioning tube communicates with each other with the external world, insert the cross arm between the corresponding two third positioning tubes, all the spiro union has two locking screw thread tubes on every cross arm, every locking screw thread tube all overlaps outside the corresponding third positioning tube and rather than sliding connection, all be provided with the spout on the interior arc wall of every arc, the adjacent group inserts the common slide bar of arc roof.

2. The coal mine tunnel temporary support structure according to claim 1, wherein: the outer wall of the slide bar is wrapped with extruded rubber, and the end parts of two adjacent slide bars are arranged in a fitting mode.

3. The coal mine tunnel temporary support structure according to claim 1, wherein: the first telescopic frame and the second telescopic frame are both composed of an inner cylinder and an outer cylinder, and the inner cylinder is in threaded connection with the outer cylinder.