Roadway soft roof rock stratum supporting device

Abstract

The utility model relates to the technical field of roadway supporting, in particular to a roadway soft roof rock stratum supporting device which comprises a supporting frame, limiting baffles are arranged on the two sides of the upper end of the supporting frame respectively, and a folding air bag connected with the supporting frame is arranged between the limiting baffles. Limiting assemblies corresponding to the folding air bags are arranged at the two ends of the supporting frame respectively, supporting sliding plates are arranged on the two sides of the lower end of the supporting frame respectively, supporting bottom plates are arranged at the lower ends of the supporting sliding plates, and fixing assemblies corresponding to the supporting sliding plates are arranged on the supporting bottom plates; the problem that in the prior art, due to the fact that an existing supporting device is fixed in structure, when a roof rock stratum is supported and in the face of non-linear deformation of a soft rock stratum, a roof cannot be adjusted according to deformation, and convergence of the two sides is prone to occurring is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a tunnel soft roof rock support device. Background Art

[0002] When coal mine tunnels are arranged in soft rock strata, due to the characteristics of soft rock strata such as low strength, easy water absorption and expansion, and nonlinear large deformation, it is easy to cause serious deformation problems such as bottom bulging and convergence of the two sides of the tunnel in the constructed tunnel, resulting in a smaller effective cross-section of the tunnel, an increase in the amount of repair work and the cost of repair, and affecting the normal function of the tunnel.

[0003] The existing support device has a fixed structure. Therefore, when supporting the roof rock layer, when faced with nonlinear deformation of the weak rock layer, the roof cannot be adjusted according to the deformation, which easily leads to the problem of convergence of the two sides. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a tunnel soft roof rock stratum support device which effectively solves the problem that the existing support devices in the prior art have a fixed structure and therefore, when supporting the roof rock stratum, when faced with nonlinear deformation of the soft rock stratum, the roof cannot be adjusted according to the deformation, which easily leads to the problem of convergence of the two sides.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A tunnel soft roof rock stratum support device comprises a support frame, limit baffles are respectively arranged on both sides of the upper end of the support frame, a folding airbag connected to the support frame is arranged between the limit baffles, and the support frame is also respectively provided with limit components corresponding to the folding airbag, support slides are respectively arranged on both sides of the lower end of the support frame, a support bottom plate is arranged at the lower end of the support slide, and a fixing component corresponding to the support slide is arranged on the support bottom plate.

[0007] A wear-resistant rubber layer is attached to the upper end of the folded airbag, and adhesive stickers corresponding to the support frame are respectively arranged on both sides of the lower end of the folded airbag.

[0008] The limiting assembly comprises an upper shaft block fixedly connected to the folding airbag, a limiting rod is arranged on the upper shaft block, and a lower shaft block connected to the supporting frame is inserted at the lower end of the limiting rod.

[0009] The fixing assembly comprises a positioning rod, a plurality of positioning holes corresponding to the positioning rod are evenly arranged on the supporting slide plate, and a plug hole corresponding to the positioning hole is opened on the supporting bottom plate.

[0010] An air inlet check valve and an air outlet check valve are respectively arranged at two ends of the folding air bag.

[0011] The supporting bottom plate is provided with a resting slide groove, and the width of the resting slide groove is the same as that of the supporting slide plate.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The folding airbag is filled with gas through an air pump, and the folding airbag bulges upward to support the top of the tunnel. Since the folding airbag is filled with air, it has a certain deformation ability. Therefore, when the soft rock layer at the upper end of the tunnel deforms nonlinearly, it can be adjusted according to the deformed shape to ensure better supporting capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an axonometric diagram of a tunnel soft roof rock support device of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a folding airbag of a tunnel soft roof rock support device of the utility model;

[0016] Figure 3 This is a structural schematic diagram of a support frame of a tunnel soft roof rock layer support device of the utility model;

[0017] Numbers in the figure: 1-support base plate, 2-support slide plate, 3-limit baffle, 4-upper shaft block, 5-lower shaft block, 6-limit rod, 7-folding airbag, 8-wear-resistant rubber layer, 9-support frame, 10-inlet check valve, 11-outlet check valve, 12-adhesive sticker, 13-positioning hole, 14-positioning rod, 15-jack, 16-shelf slide groove. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0019] like Figure 1-3 As shown, a tunnel soft roof rock stratum support device includes a support frame 9, and limit baffles 3 are respectively arranged on both sides of the upper end of the support frame 9, and a folding airbag 7 connected to the support frame 9 is arranged between the limit baffles 3, and the support frame 9 is also provided with limiting components corresponding to the folding airbag 7, and support slides 2 are respectively arranged on both sides of the lower end of the support frame 9, and a support bottom plate 1 is arranged at the lower end of the support slide 2, and a fixing component corresponding to the support slide 2 is arranged on the support bottom plate 1.

[0020] When the utility model is in use, the supporting slide plate 2 is respectively inserted into the supporting bottom plate 1, and according to the height of the tunnel, the height of the supporting slide plate 2 is adjusted until the folding airbag 7 contacts with the top of the tunnel, and the position of the supporting slide plate 2 is fixed by a fixing component, and gas is filled into the folding airbag 7 by an air pump, so that the folding airbag 7 bulges upward to support the top of the tunnel, and because the folding airbag 7 is filled with air, it has a certain deformation ability, so it can be adjusted according to the shape of the deformation when the soft rock formation at the upper end of the tunnel is nonlinearly deformed to ensure better supporting ability, and the limiting component works during the process of the folding airbag 7 bulging upward, and the limiting component is used to limit the lateral sides of the folding airbag 7 to prevent the folding airbag 7 from bulging out of the cross section of the support frame 9, thereby ensuring that the folding airbag 7 has a good supporting effect on the tunnel roof.

[0021] A wear-resistant rubber layer 8 is attached to the upper end of the folded airbag 7 , and adhesive stickers 12 corresponding to the support frame 9 are respectively arranged on both sides of the lower end of the folded airbag 7 .

[0022] like Figure 1 and 2 As shown, since the upper end of the folding airbag 7 is in contact with the ore at the top of the tunnel, the wear-resistant rubber layer 8 can be provided to effectively prevent the ore from scratching the folding airbag 7, causing the folding airbag 7 to leak and fail to play a supporting role. The adhesive tape 12 can fix the bottom of the folding airbag 7 and the support frame 9 together.

[0023] The limiting assembly includes an upper shaft block 4 fixedly connected to the folding airbag 7 , a limiting rod 6 is arranged on the upper shaft block 4 , and a lower shaft block 5 connected to the support frame 9 is inserted at the lower end of the limiting rod 6 .

[0024] like Figure 1 As shown, the folding airbag 7 bulges upward after being filled with gas. During the upward bulging process of the folding airbag 7, the upper shaft block 4 and the limit rod 6 can be driven to move upward. The lower shaft block 5 can limit the movement of the limit rod 6 to ensure that the limit rod 6 always moves vertically upward. The position of the folding airbag 7 is fixed by the limit rod 6 to prevent the folding airbag 7 from bulging out of the cross section of the support frame 9, thereby ensuring that the folding airbag 7 has a good supporting effect on the tunnel roof.

[0025] The fixing assembly includes a positioning rod 14 , a plurality of positioning holes 13 corresponding to the positioning rod 14 are evenly arranged on the supporting slide plate 2 , and a plug hole 15 corresponding to the positioning hole 13 is opened on the supporting base plate 1 .

[0026] like Figure 1 and 3As shown, the support slide 2 can move up and down along the inner wall of the support base plate 1, and then the height of the support frame 9 at the upper end of the support slide 2 can be adjusted according to the height of the lane, and the positioning rod 14 can be inserted into the socket 15 and the positioning hole 13 to fix the position of the support slide 2.

[0027] An air inlet check valve 10 and an air outlet check valve 11 are respectively disposed at both ends of the folded airbag 7 .

[0028] like Figure 2 As shown, air is injected into the folding airbag 7 through the air intake one-way valve 10, and the folding airbag 7 bulges upward to support the top of the tunnel. Since air is stored in the folding airbag 7, it can be adjusted according to the shape of the deformation when the soft rock layer at the upper end of the tunnel is nonlinearly deformed, thereby ensuring better supporting capacity.

[0029] The supporting bottom plate 1 is provided with a placing slide groove 16 , and the width of the placing slide groove 16 is the same as that of the supporting slide plate 2 .

[0030] like Figure 1 As shown, the supporting slide plate 2 can slide along the inner wall of the placement slide groove 16, so as to adjust the height of the supporting slide plate 2.

[0031] The working process of the utility model is as follows: when the utility model is in use, the support slide plate 2 is respectively inserted into the support base plate 1, and the height of the support slide plate 2 is adjusted until the folding airbag 7 contacts the top of the lane according to the height of the lane. The support slide plate 2 can move up and down along the inner wall of the support base plate 1, and then the height of the support frame 9 at the upper end of the support slide plate 2 is adjusted according to the height of the lane. The positioning rod 14 can be inserted into the insertion hole 15 and the positioning hole 13, and then the position of the support slide plate 2 is fixed. The folding airbag 7 is filled with gas through the air pump, and the folding airbag 7 bulges upward to support the top of the lane, and because the folding airbag 7 is filled with air, so it has a certain deformation ability. Therefore, when the soft rock layer at the upper end of the tunnel is nonlinearly deformed, it can be adjusted according to the shape of the deformation to ensure better supporting ability. After the folding airbag 7 is filled with gas, it bulges upward. During the upward bulging of the folding airbag 7, the upper shaft block 4 and the limit rod 6 can be driven to move upward. The lower shaft block 5 can limit the movement of the limit rod 6 to ensure that the limit rod 6 always moves vertically upward. The position of the folding airbag 7 is fixed by the limit rod 6 to prevent the folding airbag 7 from bulging out of the cross section of the support frame 9, thereby ensuring that the folding airbag 7 has a good supporting effect on the tunnel roof.

[0032] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A tunnel soft roof rock support device, comprising a support frame (9), characterized in that: Limit baffles (3) are respectively arranged on both sides of the upper end of the support frame (9), a folding airbag (7) connected to the support frame (9) is arranged between the limit baffles (3), and the support frame (9) is also provided with limit assemblies corresponding to the folding airbag (7), and support slides (2) are respectively arranged on both sides of the lower end of the support frame (9), a support bottom plate (1) is arranged at the lower end of the support slide (2), and a fixing assembly corresponding to the support slide (2) is arranged on the support bottom plate (1).

2. A tunnel soft roof rock support device according to claim 1, characterized in that: A wear-resistant rubber layer (8) is attached to the upper end of the folded airbag (7), and adhesive stickers (12) corresponding to the support frame (9) are respectively provided on both sides of the lower end of the folded airbag (7).

3. A tunnel soft roof rock support device according to claim 1, characterized in that: The limiting assembly comprises an upper shaft block (4) fixedly connected to the folding airbag (7), a limiting rod (6) being arranged on the upper shaft block (4), and a lower shaft block (5) connected to the support frame (9) being inserted at the lower end of the limiting rod (6).

4. A tunnel soft roof rock support device according to claim 1, characterized in that: The fixing assembly comprises a positioning rod (14), a plurality of positioning holes (13) corresponding to the positioning rod (14) are evenly arranged on the supporting slide plate (2), and a plug hole (15) corresponding to the positioning hole (13) is opened on the supporting base plate (1).

5. The tunnel soft roof rock support device according to claim 1, characterized in that: An air inlet check valve (10) and an air outlet check valve (11) are respectively provided at both ends of the folding air bag (7).

6. A tunnel soft roof rock support device according to claim 1, characterized in that: The supporting bottom plate (1) is provided with a resting slide groove (16), and the width of the resting slide groove (16) is the same as that of the supporting slide plate (2).

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