An underground tunnel blocking device

Abstract

The utility model relates to the technical field of tunnel construction, and specifically discloses an underground tunnel blocking device, including a positioning rod and an airbag sleeved on the outside of the positioning rod, a front column and a tail column are respectively provided at both ends of the positioning rod, at least three first positioning arms are provided on the outside of the tail column, the first positioning arms are hinged to the tail column, at least three second positioning arms are provided on the outside of the front column, the second positioning arms are hinged to the front column, and a driving assembly for controlling the synchronous deployment of each first positioning arm and each second positioning arm is provided at one end of the tail column away from the positioning rod. The first positioning arm on the outside of the tail column will open, and the positioning rod and the airbag will be fixed in the middle of the pipeline from the tail end of the airbag. The second positioning arm on the outside of the front column will open, and the positioning rod and the airbag will be fixed in the middle of the pipeline from the head end of the airbag. Under the positioning of the tail column and the front column, the airbag will not be offset during the blocking process, and the blocking effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an underground tunnel blocking device. Background Art

[0002] Tunnel blocking construction refers to blocking underground tunnels to ensure the safety and smooth progress of the project. When the blind tunnels in the mine are not ventilated, the harmful gases in the coal seam or surrounding rock will gush out and the organic matter in the tunnel will oxidize, resulting in the increase of harmful gases in the blind tunnels and the decrease of oxygen concentration. If people enter by mistake, they are very likely to suffer from hypoxia and suffocation accidents. Therefore, timely sealing of blind tunnels is an important measure to prevent the overflow of harmful gases.

[0003] When sealing underground tunnel pipes, airbags are used. The airbags seal the wellhead by expanding. Since the airbags are soft before expansion, when the sling is used to place the airbags into the wellhead sealing area, the placement of the airbags will be offset to a certain extent, which will cause the airbags to tilt after expansion, affecting the sealing of the tunnel wellhead. Utility Model Content

[0004] In view of the above problems, the utility model proposes an underground tunnel blocking device to solve the shortcomings of the existing underground tunnel blocking device that when a sling is used to place an airbag into the wellhead blocking position, the placement position of the airbag will be offset to a certain extent, which will cause the airbag to tilt after expansion, affecting the sealing of the tunnel wellhead.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: an underground tunnel blocking device, including a positioning rod and an air bag sleeved on the outside of the positioning rod, the positioning rod and the air bag are fixedly connected, and the two ends of the positioning rod are respectively provided with a front column and a tail column, and the front column and the tail column are placed outside the air bag;

[0006] At least three first positioning arms are provided on the outside of the tail column, and the first positioning arms are evenly arranged in the circumferential direction of the axis of the tail column, and the first positioning arms are hinged to the tail column;

[0007] At least three second positioning arms are arranged on the outside of the front column, and the second positioning arms are evenly arranged in the circumferential direction of the axis of the front column, and the second positioning arms are hinged to the front column;

[0008] A driving assembly for controlling the synchronous expansion of each first positioning support arm and each second positioning support arm is provided at one end of the tail column away from the positioning rod.

[0009] A further improvement is that: the first positioning support arm includes a first support rod, one end of the first support rod is hinged to the tail column, and the other end of the first support rod is provided with a first rubber roller, and the first rubber roller is fixedly connected to the first support rod.

[0010] A further improvement is that the second positioning support arm includes a third support rod, one end of the third support rod is hinged to the front column, the other end of the third support rod is provided with a second rubber roller, and the second rubber roller is fixedly connected to the third support rod.

[0011] A further improvement is that: the driving assembly comprises a first driving member, a second driving member and a total driving member;

[0012] The first driving member is disposed in the tail column and is used to control the synchronous deployment of each first support rod;

[0013] The second driving member is disposed in the front column and is used to control the synchronous deployment of each second support rod;

[0014] The main driving member is arranged at one end of the tail column away from the positioning rod, and is used to control the start and stop of the first driving member and the second driving member.

[0015] A further improvement is that: the first driving member includes a first screw rod arranged in the tail column, a first nut seat is sleeved on the outside of the first screw rod, the first nut seat is threadedly connected to the first screw rod, at least three first hinged seats are arranged on the outside of the first nut seat, the first hinged seat is slidably connected to a first sliding groove opened on the outside of the tail column, a second support rod is arranged at one end of the first hinged seat away from the first nut seat, the second support rod is hinged to the first nut seat, and one end of the second support rod away from the first nut seat is hinged to the first support rod.

[0016] Further improvement is that: the second driving member includes a second screw rod arranged in the front column, a second nut seat is sleeved on the outside of the second screw rod, the second nut seat is threadedly connected to the second screw rod, at least three second hinged seats are arranged on the outside of the second screw rod, the second hinged seat is slidably connected to the second slide groove opened on the outside of the front column, a fourth support rod is arranged at the end of the second hinged seat away from the second nut seat, the fourth support rod is hinged to the second nut seat, and the end of the fourth support rod away from the second nut seat is hinged to the third support rod.

[0017] A further improvement is that the total driving component includes a screwing head and a transmission rod, the screwing head is rotatably connected to the end of the tail column away from the positioning rod, the screwing head is fixedly connected to the first screw rod through a rotating shaft, the transmission rod is placed in the positioning rod, and the two ends of the transmission rod are respectively fixedly connected to the first screw rod and the second screw rod.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The first positioning arm on the outside of the tail column will open, and the positioning rod and the airbag will be fixed in the middle of the pipe from the tail end of the airbag. The second positioning arm on the outside of the front column will open, and the positioning rod and the airbag will be fixed in the middle of the pipe from the head end of the airbag. With the positioning of the tail column and the front column, the airbag will not deviate during the plugging process, and the plugging effect will be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural diagram of the airbag in the utility model.

[0022] Figure 2 It is a structural diagram of the positioning rod in the utility model.

[0023] Figure 3 It is a structural diagram of the front column in the utility model.

[0024] Figure 4 It is a structural diagram of the tail column in the utility model.

[0025] Among them: 1. airbag; 2. positioning rod; 3. front column; 4. tail column; 5. screw head; 6. first support rod; 7. second support rod; 8. first rubber roller; 9. third support rod; 10. fourth support rod; 11. second rubber roller; 12. first slide groove; 13. second slide groove; 14. first screw rod; 15. first nut seat; 16. first hinge seat; 17. second screw rod; 18. second nut seat; 19. second hinge seat; 20. transmission rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] according to Figure 1 , 2 As shown in , 3 and 4, an underground tunnel blocking device is proposed in this embodiment, including a positioning rod 2 and an airbag 1 sleeved on the outside of the positioning rod 2, the positioning rod 2 is fixedly connected to the airbag 1, and a front column 3 and a tail column 4 are respectively provided at both ends of the positioning rod 2, and the front column 3 and the tail column 4 are placed outside the airbag 1;

[0028] The airbag 1 is inserted into the pipe of the underground tunnel that needs to be blocked through the positioning rod 2, and the airbag 1 is inflated using a pressurizing device. After the airbag 1 is expanded, the pipe is blocked.

[0029] At least three first positioning arms are provided on the outside of the tail column 4, and the first positioning arms are evenly arranged in the circumferential direction of the axis of the tail column 4, and the first positioning arms are hinged to the tail column 4;

[0030] Before inflation, the first positioning arm on the outer side of the tail column 4 will be opened to fix the positioning rod 2 and the airbag 1 in the middle of the pipeline from the tail end of the airbag 1.

[0031] At least three second positioning arms are provided on the outside of the front pillar 3, and the second positioning arms are evenly arranged in the circumferential direction of the axis of the front pillar 3, and the second positioning arms are hinged to the front pillar 3;

[0032] The second positioning arm on the outside of the front column 3 will open, and the positioning rod 2 and the air bag 1 will be fixed in the middle of the pipeline from the head end of the air bag 1.

[0033] The tail column 4 is provided with a driving assembly for controlling the synchronous expansion of each first positioning arm and each second positioning arm at one end away from the positioning rod 2. The opening of the first positioning arm and the second positioning arm is uniformly controlled by the driving assembly outside the tail column 4, which is easy to use and install.

[0034] About the first positioning arm:

[0035] The first positioning support arm includes a first support rod 6, one end of which is hinged to the tail pillar 4, and the other end of the first support rod 6 is provided with a first rubber roller 8, which is fixedly connected to the first support rod 6. When the first support rod 6 is pushed by the driving assembly and simultaneously unfolded toward the sides of the tail pillar 4, the first rubber roller 8 on the first support rod 6 will contact the surface wall of the underground tunnel, and prop up the tail pillar 4 to the center of the tunnel.

[0036] About the second positioning arm:

[0037] The second positioning support arm includes a third support rod 9, one end of which is hinged to the front column 3, and the other end of the third support rod 9 is provided with a second rubber roller 11, which is fixedly connected to the third support rod 9. When the third support rod 9 is pushed by the driving assembly and simultaneously unfolded to the sides of the front column 3, the second rubber roller 11 on the third support rod 9 will contact the surface wall of the underground tunnel, and prop up the front column 3 to the center of the tunnel.

[0038] About the drive components:

[0039] The driving assembly includes a first driving member, a second driving member and a total driving member; the first driving member is placed in the tail column 4, and is used to control the synchronous deployment of each first support rod 6; the second driving member is placed in the front column 3, and is used to control the synchronous deployment of each second support rod 7; the total driving member is placed at one end of the tail column 4 away from the positioning rod 2, and is used to control the start and stop of the first driving member and the second driving member.

[0040] The deployment of the first support rod 6 and the third support rod 9 is controlled by the main driving member on the tail column 4 .

[0041] For the specific structure of the first driving member, please refer to the following description.

[0042] The first driving member includes a first screw rod 14 arranged in the tail column 4, a first nut seat 15 is sleeved on the outer side of the first screw rod 14, the first nut seat 15 is threadedly connected to the first screw rod 14, at least three first hinge seats 16 are arranged on the outer side of the first nut seat 15, the first hinge seat 16 is slidably connected to the first slide groove 12 opened on the outer side of the tail column 4, a second support rod 7 is arranged at one end of the first hinge seat 16 away from the first nut seat 15, the second support rod 7 is hinged to the first nut seat 15, and one end of the second support rod 7 away from the first nut seat 15 is hinged to the first support rod 6.

[0043] The working principle of the first driving member is: when the first screw rod 14 rotates, the first screw rod 14 will cooperate with the first nut seat 15, and move along the rod body of the first screw rod 14 with the first nut seat 15, and the first hinged seat 16 outside the first nut seat 15 will slide along the first slide groove 12, and the first nut seat 15 will pull or push the first support rod 6 through the second support rod 7, so that the first support rod 6 can be unfolded and retracted.

[0044] For the specific structure of the second driving member, please refer to the following description.

[0045] The second driving member includes a second screw rod 17 arranged in the front column 3, a second nut seat 18 is sleeved on the outer side of the second screw rod 17, the second nut seat 18 is threadedly connected to the second screw rod 17, at least three second hinge seats 19 are arranged on the outer side of the second screw rod 17, the second hinge seat 19 is slidably connected to the second slide groove 13 opened on the outer side of the front column 3, a fourth support rod 10 is arranged at one end of the second hinge seat 19 away from the second nut seat 18, the fourth support rod 10 is hinged to the second nut seat 18, and the fourth support rod 10 is hinged to the third support rod 9 at one end of the fourth support rod 10 away from the second nut seat 18.

[0046] The working principle of the second driving member is: when the second screw rod 17 rotates, the second screw rod 17 will cooperate with the second nut seat 18, and move along the rod body of the second screw rod 17 with the second nut seat 18, and the second hinged seat 19 outside the second nut seat 18 will slide along the second slide groove 13, and the second nut seat 18 pulls or pushes the third support rod 9 through the fourth support rod 10, so that the third support rod 9 is unfolded and retracted.

[0047] For the specific structure of the overall drive unit, please refer to the following description.

[0048] The main driving component includes a screwing head 5 and a transmission rod 20. The screwing head 5 is rotatably connected to the end of the tail column 4 away from the positioning rod 2. The screwing head 5 is fixedly connected to the first screw 14 through a rotating shaft. The transmission rod 20 is placed in the positioning rod 2. The two ends of the transmission rod 20 are fixedly connected to the first screw 14 and the second screw 17 respectively.

[0049] The working principle of the main driving member is: rotating the screw head 5 will drive the first screw rod 14 to rotate. Since the first screw rod 14 is fixed to the second screw rod 17 through the transmission rod 20, when the first screw rod 14 rotates, the second screw rod 17 will also rotate.

[0050] How this application works:

[0051] The airbag 1 is inserted into the pipe of the underground tunnel that needs to be blocked through the positioning rod 2, and the airbag 1 is inflated using a pressurizing device. After the airbag 1 is expanded, the pipe is blocked.

[0052] Before inflation, the first positioning arm on the outside of the tail pillar 4 will be opened, and the positioning rod 2 and the airbag 1 will be fixed in the middle of the pipe from the tail end of the airbag 1. The second positioning arm on the outside of the front pillar 3 will be opened, and the positioning rod 2 and the airbag 1 will be fixed in the middle of the pipe from the head end of the airbag 1. Under the positioning of the tail pillar 4 and the front pillar 3, the airbag 1 will not be offset during the blocking process, and the blocking effect is better.

[0053] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0054] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An underground tunnel plugging device, comprising a positioning rod (2) and an air bag (1) sleeved on the outside of the positioning rod (2), wherein the positioning rod (2) is fixedly connected to the air bag (1), characterized in that: The two ends of the positioning rod (2) are respectively provided with a front column (3) and a tail column (4), and the front column (3) and the tail column (4) are placed outside the airbag (1); At least three first positioning arms are provided on the outside of the tail column (4), each of the first positioning arms is evenly arranged in the circumferential direction of the axis of the tail column (4), and the first positioning arms are hinged to the tail column (4); At least three second positioning arms are provided on the outside of the front column (3), each of the second positioning arms is evenly arranged in the circumferential direction of the axis of the front column (3), and the second positioning arms are hinged to the front column (3); The tail column (4) is provided with a driving assembly at one end away from the positioning rod (2) for controlling the synchronous deployment of each of the first positioning arms and each of the second positioning arms.

2. The underground tunnel blocking device according to claim 1, characterized in that: The first positioning support arm comprises a first support rod (6), one end of the first support rod (6) is hinged to the tail column (4), and the other end of the first support rod (6) is provided with a first rubber roller (8), and the first rubber roller (8) is fixedly connected to the first support rod (6).

3. The underground tunnel blocking device according to claim 2, characterized in that: The second positioning support arm comprises a third support rod (9), one end of the third support rod (9) is hinged to the front column (3), the other end of the third support rod (9) is provided with a second rubber roller (11), and the second rubber roller (11) is fixedly connected to the third support rod (9).

4. The underground tunnel blocking device according to claim 3, characterized in that: The driving assembly includes a first driving member, a second driving member and a main driving member; The first driving member is disposed in the tail column (4) and is used to control the synchronous deployment of each of the first support rods (6); The second driving member is disposed in the front column (3) and is used to control the synchronous deployment of each of the third support rods (9); The main driving member is disposed at an end of the tail column (4) away from the positioning rod (2) and is used to control the start and stop of the first driving member and the second driving member.

5. The underground tunnel blocking device according to claim 4, characterized in that: The first driving member comprises a first screw rod (14) arranged in the tail column (4), a first nut seat (15) is sleeved on the outer side of the first screw rod (14), the first nut seat (15) is threadedly connected to the first screw rod (14), at least three first hinge seats (16) are arranged on the outer side of the first nut seat (15), the first hinge seat (16) is slidably connected to a first slide groove (12) arranged on the outer side of the tail column (4), a second support rod (7) is arranged at one end of the first hinge seat (16) away from the first nut seat (15), the second support rod (7) is hinged to the first nut seat (15), and the second support rod (7) is hinged to the first support rod (6) at one end of the second support rod (7) away from the first nut seat (15).

6. The underground tunnel blocking device according to claim 5, characterized in that: The second driving member comprises a second screw rod (17) arranged in the front column (3), a second nut seat (18) is sleeved on the outer side of the second screw rod (17), the second nut seat (18) is threadedly connected to the second screw rod (17), at least three second hinge seats (19) are arranged on the outer side of the second screw rod (17), the second hinge seats (19) are slidably connected to a second slide groove (13) arranged on the outer side of the front column (3), a fourth support rod (10) is arranged at one end of the second hinge seat (19) away from the second nut seat (18), the fourth support rod (10) is hinged to the second nut seat (18), and the fourth support rod (10) is hinged to the third support rod (9) at one end away from the second nut seat (18).

7. The underground tunnel blocking device according to claim 6, characterized in that: The total driving component comprises a screwing head (5) and a transmission rod (20); the screwing head (5) is rotatably connected to one end of the tail column (4) away from the positioning rod (2); the screwing head (5) is fixedly connected to the first screw rod (14) via a rotating shaft; the transmission rod (20) is disposed in the positioning rod (2); and the two ends of the transmission rod (20) are respectively fixedly connected to the first screw rod (14) and the second screw rod (17).

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