Movable ventilation door structure for tunnel roadway ventilation and construction method of movable ventilation door structure

Abstract

The invention discloses a tunnel roadway ventilation movable air door structure and a construction method thereof, and relates to the technical field of tunnel construction ventilation. Comprising a plugging assembly and a walking assembly, the plugging assembly comprises a plugging support and a plugging plate, a mounting cavity is formed in the plugging support, the shape of the plugging plate is matched with that of the mounting cavity, the plugging plate is arranged in the mounting cavity and connected with the inner wall of the plugging support, a U-shaped bottom groove is formed in the outer side wall of the plugging support, and a plugging air bag is arranged in the U-shaped bottom groove; the walking assembly is installed at the bottom of the plugging support, and after the plugging air bag is filled with air, the plugging air bag makes contact with the cross section of an air door in a roadway so as to plug the roadway. According to the movable air door structure for tunnel roadway ventilation, the blocking effect on the cross section of the air door is guaranteed, the air door structure can be repeatedly used after being machined, the economical efficiency is improved, and manpower is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction ventilation, and more particularly to a movable damper structure for tunnel lane ventilation and a construction method thereof. Background Art

[0002] With the construction of roads, railways, water conservancy and other infrastructure in the vast western region, more and more high-altitude long tunnels are being built. The ventilation difficulties in tunnel construction in high-altitude and low-pressure areas are particularly significant, which is a new problem and new task facing engineers.

[0003] During tunnel ventilation at traditional tunnel construction sites, there are two common temporary blocking methods for the isolation dampers between the clean air lane and the polluted air lane: 1. Brick-concrete structure blocking: Use brick masonry or concrete casting structure to block the damper section; 2. Steel frame covering blocking: Use a steel frame or bracket as the damper's load-bearing foundation, and cover it with geotextile, waterproof board and other materials to block the damper section.

[0004] However, the use of brick-concrete structure for sealing will waste a lot of masonry materials at one time and is costly. The use of steel frame covering for sealing has average damper function, and air leakage and mixing are common. Moreover, it is a one-time temporary facility, which requires a lot of materials and labor, and cannot be reused or moved.

[0005] Therefore, how to provide a movable and reusable damper structure is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a movable damper structure for tunnel ventilation and a construction method thereof, which can be moved within the tunnel to block the tunnel. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides a movable damper structure for tunnel ventilation, comprising:

[0008] The blocking assembly includes a blocking bracket and a blocking plate. The blocking bracket is provided with a mounting cavity inside. The shape of the blocking plate is adapted to the shape of the mounting cavity. The blocking plate is arranged in the mounting cavity and connected to the inner wall of the blocking bracket. The outer wall of the blocking bracket is provided with a U-shaped bottom groove. The U-shaped bottom groove is provided with a blocking airbag inside.

[0009] A walking assembly, the walking assembly being mounted on the bottom of the blocking bracket;

[0010] When the blocking airbag is filled with gas, the blocking airbag contacts the air door section in the tunnel to block the tunnel.

[0011] Furthermore, two blocking plates are provided, and the two blocking plates are respectively located at two ends of the installation cavity and connected to the inner wall of the blocking bracket.

[0012] Furthermore, the walking assembly includes a working platform and walking wheels, the walking wheels are rotatably connected to the bottom of the working platform, and the working platform passes through the installation cavity and is connected to the bottom plate of the blocking bracket.

[0013] Furthermore, the door openings passing through the two blocking plates are each equipped with a passage door.

[0014] Furthermore, it also includes a damper sleeve, which passes through the two blocking plates in sequence and is fixedly connected to the blocking plates.

[0015] Furthermore, guardrails are provided around the working platform.

[0016] Furthermore, the working platform is provided with stairs.

[0017] Furthermore, the walking wheel includes a driving wheel and a driven wheel, and the driving wheel and the driven wheel are respectively arranged at both ends of the working platform, one driving wheel is provided, and two driven wheels are provided. A driving motor is provided on the working platform, and the output end of the driving motor is connected to a first sprocket. The driving wheel is rotatably connected to the working platform through a rotating shaft, and a second sprocket is provided on the rotating shaft. A chain is connected between the first sprocket and the second sprocket.

[0018] In another aspect, the present invention provides a method for constructing a movable damper structure for tunnel and roadway ventilation, wherein the method uses the movable damper structure for tunnel and roadway ventilation, and comprises the following steps:

[0019] S10: Determine the installation position of the damper structure and line the damper section;

[0020] S20: Manually clean sharp objects on the inverted arch pavement and lining surface;

[0021] S30: Before inflating the blocking airbag, install and connect the air supply hose, control valve, and pressure gauge. After everything is ready, proceed with the inflation installation.

[0022] S40: After the inflation installation is completed, first close the valve on the blocking airbag, and then close the valve on the air supply pipeline to complete the installation of the damper structure.

[0023] It can be seen from the above technical solution that compared with the prior art, the present invention discloses a movable damper structure for tunnel lane ventilation, in which the blocking component is moved to the damper section to be blocked by the walking component, and the sealing airbag is inflated. The damper section is blocked by the blocking bracket, the blocking airbag and the blocking plate, and the blocking airbag ensures close contact between the blocking component and the damper section to ensure the blocking effect. After the blocking work is completed, the gas in the blocking airbag is released, and the blocking component is moved away from the damper section by the walking component, thereby ensuring the blocking effect of the damper section. In addition, the damper structure can be reused after processing, which improves economy and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of the movable damper structure for tunnel and laneway ventilation provided by the present invention;

[0026] Figure 2 A schematic diagram of a portion of the structure of the movable damper structure for tunnel and laneway ventilation provided by the present invention;

[0027] Figure 3 A schematic structural diagram of a blocking assembly of a movable damper structure for tunnel and laneway ventilation provided by the present invention;

[0028] Figure 4 A schematic structural diagram of the movable damper structure for tunnel lane ventilation provided by the present invention from another perspective.

[0029] In the figure: 1. Sealing airbag; 2. Air door casing; 3. Sealing plate; 4. Passage door; 5. Guardrail; 6. Stairs; 7. Driving wheel; 8. Sealing bracket; 9. U-shaped bottom trough; 10. Working platform; 11. Driven wheel. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-4The embodiment of the present invention discloses a movable damper structure for tunnel ventilation, comprising:

[0032] The blocking assembly includes a blocking bracket 8 and a blocking plate 3. The blocking bracket 8 has an installation cavity provided therein. The shape of the blocking plate 3 is adapted to the shape of the installation cavity. The blocking plate 3 is disposed in the installation cavity and connected to the inner wall of the blocking bracket 8. A U-shaped bottom groove 9 is provided on the outer wall of the blocking bracket 8. The blocking airbag 1 is provided inside the U-shaped bottom groove 9.

[0033] Walking assembly, the walking assembly is installed at the bottom of the blocking bracket 8;

[0034] When the blocking airbag 1 is filled with gas, the blocking airbag 1 contacts the damper section in the tunnel to block the damper section.

[0035] During the construction process, according to the installation position of the damper structure, the damper section is lined, and impurities on the damper section are cleared. The damper structure is moved to the damper section through the walking assembly, and the sealing airbag 1 is inflated to expand the sealing airbag 1 to seal the damper section. When the damper section no longer needs to be sealed, the gas in the sealing airbag 1 is released, and the damper structure is moved away from the damper section through the walking assembly.

[0036] The sealing effect of the blocking section is ensured by the close contact between the blocking airbag 1 and the blocking section. After the damper structure completes the blocking work, the gas in the airbag is discharged to facilitate the movement of the damper structure. At the same time, when used next time, air can be re-introduced into the blocking airbag 1, so that the damper structure can be reused.

[0037] In some embodiments, the blocking airbag 1 is 15 cm larger than the damper cross-section in the circumferential direction, so that at the maximum cross-section of the damper, the blocking airbag 1 can still press against the surface of the damper cross-section to ensure the sealing effect.

[0038] In some embodiments, two blocking plates 3 are provided. The two blocking plates 3 are respectively located at the two ends of the installation cavity and connected to the inner wall of the blocking bracket 8 .

[0039] Through the cooperation of the blocking plate 3, the blocking bracket 8 and the blocking airbag 1, the damper cross section is blocked to ensure the blocking effect.

[0040] In some embodiments, the walking assembly includes a working platform 10 and walking wheels, which are rotatably connected to the bottom of the working platform 10 . The working platform 10 passes through the installation cavity and is connected to the bottom plate of the blocking bracket 8 .

[0041] By providing the working platform 10 , it is ensured that the workers can operate on the working platform 10 during the movement of the damper structure, thereby ensuring the stability of the workers' operation.

[0042] In some embodiments, the door openings passing through the two blocking plates 3 are both equipped with passage doors 4 .

[0043] By providing the passage door 4, it is ensured that the blocking plate 3 blocks the air door cross section while ensuring that the workers can smoothly pass through the air door structure, thereby improving the convenience of construction.

[0044] In some embodiments, a damper sleeve 2 is further included, which passes through the two blocking plates 3 in sequence and is fixedly connected to the blocking plates 3.

[0045] By setting the damper sleeve 2, the ventilation duct, high-pressure air supply pipe, booster water supply pipe and power supply wire can pass through the two blocking plates 3, ensuring the blocking effect of the damper section while ensuring the normal operation of the construction.

[0046] In some embodiments, guardrails 5 are provided around the working platform 10 .

[0047] The guardrail 5 prevents workers from falling from the working platform 10 during the working process, thereby ensuring the safety of the construction workers while working on the platform.

[0048] In some embodiments, stairs 6 are provided on the working platform 10 .

[0049] The provision of the stairs 6 makes it convenient for construction workers to enter and leave the working platform 10 .

[0050] In some embodiments, the treads of the staircase 6 are made of anti-slip patterned steel plates, and the guardrail height is not less than 120 cm.

[0051] In some embodiments, the walking wheels include a driving wheel 7 and a driven wheel 11, which are respectively arranged at both ends of the working platform 10, one driving wheel 7 and two driven wheels 11, a driving motor is provided on the working platform 10, and the output end of the driving motor is connected to the first sprocket, the driving wheel 7 is rotatably connected to the working platform 10 through a rotating shaft, a second sprocket is provided on the rotating shaft, and a chain is connected between the first sprocket and the second sprocket.

[0052] When the damper structure needs to be moved, the drive motor is started, and the drive motor drives the first sprocket to rotate. The first sprocket drives the second sprocket to rotate through the chain. The rotation of the second sprocket drives the rotating shaft to rotate, thereby driving the driving wheel 7 to rotate, realizing automatic movement of the damper structure.

[0053] In another aspect, the present invention provides a method for constructing a movable damper structure for tunnel and roadway ventilation, wherein the method uses the movable damper structure for tunnel and roadway ventilation, and comprises the following steps:

[0054] During the installation of the damper structure, first determine the installation position of the damper structure, select the lining plate seam as the vertical reference line, and control the vertical installation of the damper structure. After the damper installation position is determined, manually clean the sharp objects on the arch road surface and lining surface to avoid damaging the blocking airbag 1 and causing air leakage. Before inflating the blocking airbag 1, install and connect the air supply hose, control valve, and pressure gauge. After everything is ready, perform inflation installation. During the inflation process, strictly control the pressure within 0.05Mpa, and pay attention to observe the verticality of the damper. Use the guide rope to adjust the position of the damper, and check whether the damper is in close contact in the circumferential direction and whether there is air leakage. After the inflation installation is completed, first close the valve on the blocking airbag 1, and then close the valve on the air supply pipeline to avoid air leakage and pressure relief. Gradually relieve the pressure and deflate the air until the pressure on the pressure gauge returns to zero. Transport or move it to the next installation position by itself. Repeat this process to achieve the recycling of the damper structure.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0056] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A movable damper structure for tunnel ventilation, characterized in that: include: The blocking assembly includes a blocking bracket and a blocking plate. The blocking bracket is provided with a mounting cavity inside. The shape of the blocking plate is adapted to the shape of the mounting cavity. The blocking plate is arranged in the mounting cavity and connected to the inner wall of the blocking bracket. The outer wall of the blocking bracket is provided with a U-shaped bottom groove. The U-shaped bottom groove is provided with a blocking airbag inside. A walking assembly, the walking assembly being mounted on the bottom of the blocking bracket; When the blocking airbag is filled with gas, the blocking airbag contacts the air door section in the tunnel to block the tunnel.

2. The movable damper structure for tunnel ventilation according to claim 1, characterized in that: Two blocking plates are provided, and the two blocking plates are respectively located at two ends of the installation cavity and connected to the inner wall of the blocking bracket.

3. The movable damper structure for tunnel ventilation according to claim 1, characterized in that: The walking assembly includes a working platform and walking wheels, wherein the walking wheels are rotatably connected to the bottom of the working platform, and the working platform passes through the installation cavity and is connected to the bottom plate of the blocking bracket.

4. The movable damper structure for tunnel ventilation according to claim 2, characterized in that: The two blocking plates are provided with door openings, each of which is provided with a passage door.

5. The movable damper structure for tunnel ventilation according to claim 2, characterized in that: It also includes a damper sleeve, which passes through the two blocking plates in sequence and is fixedly connected to the blocking plates.

6. The movable damper structure for tunnel ventilation according to claim 3, characterized in that: The working platform is provided with guardrails around it.

7. The movable damper structure for tunnel ventilation according to claim 3, characterized in that: The working platform is provided with stairs.

8. The movable damper structure for tunnel ventilation according to claim 3, characterized in that: The walking wheel includes a driving wheel and a driven wheel, and the driving wheel and the driven wheel are respectively arranged at both ends of the working platform, one driving wheel is provided, and two driven wheels are provided. A driving motor is provided on the working platform, and the output end of the driving motor is connected to a first sprocket. The driving wheel is rotatably connected to the working platform through a rotating shaft, and a second sprocket is provided on the rotating shaft. A chain is connected between the first sprocket and the second sprocket.

9. A construction method for a movable damper structure for tunnel ventilation, characterized in that: The construction method uses the movable damper structure for tunnel ventilation according to claims 1 to 8, comprising the following steps: S10: Determine the installation position of the damper structure and line the damper section; S20: Manually clean sharp objects on the inverted arch pavement and lining surface; S30: Before inflating the blocking airbag, install and connect the air supply hose, control valve, and pressure gauge. After everything is ready, proceed with the inflation installation. S40: After the inflation installation is completed, first close the valve on the blocking airbag, and then close the valve on the air supply pipeline to complete the installation of the damper structure.

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