Liftable air duct device for tunnel engineering

Abstract

The invention discloses a liftable air duct device for tunnel engineering, and relates to the field of tunnel engineering. The liftable air duct device for tunnel engineering comprises a plurality of air duct bodies and a tunnel body, lifting mechanisms are arranged on the air duct bodies, movable assemblies are arranged on the lifting mechanisms, the air duct bodies are connected end to end through two mounting assemblies, each lifting mechanism comprises a U-shaped mounting plate, and a connecting block is slidably connected to the U-shaped mounting plate; threaded rods are inserted into the connecting blocks, and limiting blocks are fixedly connected to the threaded rods. According to the liftable air duct device for tunnel engineering, when a certain air duct body needs to be replaced, the head pull wire and the tail pull wire of the air duct body needing to be replaced are pulled firstly, so that the sealing pipe is driven to move on the air duct body, limiting on the air duct body is lost, the air duct body can descend independently, then a limiting block is rotated, and the air duct body can be replaced. And the connecting block and the air duct main body move downwards, so that the purposes of conveniently replacing the air duct main body and conveniently maintaining are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering, and specifically to a liftable air duct device for tunnel engineering. Background Art

[0002] During the tunneling construction process of a tunnel, in order to dilute and discharge gun smoke, dust, and toxic and harmful gases and maintain good working conditions, it is necessary to ventilate the tunnel. Especially for gas tunnels, doing a good job in construction ventilation plays an extremely important role in preventing major safety accidents related to gas during the construction process.

[0003] The existing air duct devices for tunnels need to fix multiple air ducts. If one of the air ducts breaks, it is inconvenient to replace it because the air duct is fixed too high. For this reason, we have designed a liftable air duct device for tunnel engineering to solve the above problems. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention discloses a liftable air duct device for tunnel engineering to solve the problems raised in the above background art. Technical Solution

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A liftable air duct device for tunnel engineering includes a plurality of air duct bodies and a tunnel body. All of the plurality of air duct bodies are located inside the tunnel body. Lifting mechanisms are provided on all of the plurality of air duct bodies. Moving components are provided on all of the plurality of lifting mechanisms. The plurality of air duct bodies are connected end to end through two sets of mounting components; The lifting mechanism includes a U-shaped mounting plate fixedly connected to the inner side wall of the tunnel body. A connecting block is slidably connected to the U-shaped mounting plate. A threaded rod is inserted into the connecting block and is in threaded connection with the connecting block. The connecting block penetrates through the U-shaped mounting plate and is rotatably connected to the U-shaped mounting plate through a bearing. A limiting block is fixedly connected to the threaded rod. The limiting block is located below the U-shaped mounting plate. A bolt is in threaded connection with the limiting block. The bolt extends into the interior of the U-shaped mounting plate. A fixing plate is fixedly connected to the connecting block. The mounting component is located on the fixing plate. The air duct body is located on the mounting component.

[0006] Preferably, the installation component includes an installation housing. The main air duct is inserted into the installation housing, and the main air duct is fixedly connected to the installation housing. The installation housing is fixedly connected to the fixing plate. A clockwork spring is arranged inside the installation housing. One end of the clockwork spring is fixedly connected with a traction wire. The traction wire is wound around the clockwork spring. The other end of the clockwork spring is fixedly connected with an installation block. A limiting block is fixedly connected to the installation block. The limiting block is located between the installation housing and the main air duct. A sealing pipe is inserted into the limiting block. The sealing pipe is threadedly connected with the limiting block. The sealing pipe is slidably connected to the main air duct, and the sealing pipe abuts against the main air duct.

[0007] Preferably, two limiting rods are fixedly connected to the main air duct. Limiting grooves are formed in the sealing pipe. The limiting rods are located inside the limiting grooves.

[0008] Preferably, a spherical ball is fixedly connected to the bottom end of the traction wire. Through holes corresponding to the traction wire are formed in the fixing plate and the installation housing.

[0009] Preferably, a slider is fixedly connected to one side of the connecting block close to the U-shaped mounting plate. A sliding groove is formed in the U-shaped mounting plate. The slider is slidably connected inside the sliding groove.

[0010] Preferably, the cross-sectional shape of the slider is trapezoidal, and the cross-sectional shape of the sliding groove correspondingly is also trapezoidal.

[0011] The present invention discloses a liftable air duct device for tunnel engineering, and the beneficial effects thereof are as follows: For this liftable air duct device for tunnel engineering, by providing a U-shaped mounting plate, a threaded rod, a fixing plate, an installation housing and a connecting block, when in use by a user, when it is necessary to replace a certain main air duct, first pull the two traction wires at the head and tail of the main air duct to be replaced, thereby driving the sealing pipe to move on the main air duct, so as to lose the limit on the main air duct, enabling the main air duct to be lowered alone, and then rotate the limiting block to make the connecting block and the main air duct move downward, so as to achieve the purpose of facilitating the replacement of the main air duct and facilitating maintenance.

[0012] For this liftable air duct device for tunnel engineering, by providing an installation component including an installation housing, a clockwork spring is arranged inside the installation housing. One end of the clockwork spring is fixedly connected with a traction wire. The other end of the clockwork spring is fixedly connected with an installation block. A limiting block is fixedly connected to the installation block. A sealing pipe is inserted into the limiting block. The sealing pipe is threadedly connected with the limiting block. The sealing pipe is slidably connected to the main air duct, and the sealing pipe abuts against the main air duct, realizing the limit on the main air duct and the sealing between multiple main air ducts. Description of the Drawings

[0013] Figure 1Schematic diagram of the structure of the present invention; Figure 2 Enlarged view of part A of the present invention; Figure 3 Bottom view of the U-shaped mounting plate part of the present invention; Figure 4 Exploded view of the mounting housing and the clockwork spring part of the present invention; Figure 5 Stereogram of the U-shaped mounting plate and part of the mounting housing part of the present invention; Figure 6 Stereogram of the mounting housing part of the present invention.

[0014] In the figure: 1, air duct main body; 101, limiting rod; 2, tunnel main body; 3, U-shaped mounting plate; 301, sliding groove; 4, threaded rod; 5, traction wire; 6, fixing plate; 7, mounting housing; 8, connecting block; 801, slider; 9, sealing pipe; 901, limiting groove; 10, limiting block; 11, bolt; 12, clockwork spring; 13, mounting block. Detailed implementation manners

[0015] The embodiment of the present invention discloses a liftable air duct device for tunnel engineering, as Figure 1-6 shown, which includes a plurality of air duct main bodies 1 and a tunnel main body 2. A plurality of air duct main bodies 1 are all located inside the tunnel main body 2. Lifting mechanisms are provided on a plurality of air duct main bodies 1. Moving components are provided on a plurality of lifting mechanisms. A plurality of air duct main bodies 1 are connected end to end through two groups of mounting components; The lifting mechanism includes a U-shaped mounting plate 3. The U-shaped mounting plate 3 is fixedly connected to the inner side wall of the tunnel main body 2. A connecting block 8 is slidably connected to the U-shaped mounting plate 3. A threaded rod 4 is inserted into the connecting block 8. The threaded rod 4 is threadedly connected to the connecting block 8. The connecting block 8 penetrates through the U-shaped mounting plate 3, and the connecting block 8 is rotatably connected to the U-shaped mounting plate 3 through a bearing. A limiting block 10 is fixedly connected to the threaded rod 4. The limiting block 10 is located below the U-shaped mounting plate 3. A bolt 11 is threadedly connected to the limiting block 10. The bolt 11 extends into the interior of the U-shaped mounting plate 3. A fixing plate 6 is fixedly connected to the connecting block 8. The mounting component is located on the fixing plate 6. The air duct main body 1 is located on the mounting component.

[0016] The installation component includes an installation housing 7. The main air duct body 1 is inserted inside the installation housing 7 and is fixedly connected to the installation housing 7. The installation housing 7 is fixedly connected to the fixing plate 6. Inside the installation housing 7, there is a clockwork spring 12. One end of the clockwork spring 12 is fixedly connected to a traction wire 5. The traction wire 5 is wound around the clockwork spring 12. The other end of the clockwork spring 12 is fixedly connected to an installation block 13. A limiting block 10 is fixedly connected to the installation block 13. The limiting block 10 is located between the installation housing 7 and the main air duct body 1. A sealing tube 9 is inserted into the limiting block 10. The sealing tube 9 is threadedly connected to the limiting block 10. The sealing tube 9 is slidably connected to the main air duct body 1 and abuts against the main air duct body 1, realizing the limitation of the main air duct body 1 and the sealing between multiple main air duct bodies 1.

[0017] Two limiting rods 101 are fixedly connected to the main air duct body 1. A limiting groove 901 is formed on the sealing tube 9. The limiting rods 101 are located inside the limiting groove 901, realizing the limitation of the sealing tube 9.

[0018] A spherical ball is fixedly connected to the bottom end of the traction wire 5. Through holes corresponding to the traction wire 5 are formed on the fixing plate 6 and the installation housing 7, facilitating the pulling of the traction wire 5.

[0019] On the side of the connecting block 8 close to the U-shaped mounting plate 3, a slider 801 is fixedly connected. A sliding groove 301 is formed on the U-shaped mounting plate 3. The slider 801 is slidably connected inside the sliding groove 301, realizing the sliding of the connecting block 8 on the mounting plate 3.

[0020] The cross-sectional shape of the slider 801 is trapezoidal, and the cross-sectional shape of the sliding groove 301 correspondingly is also trapezoidal, realizing the limitation of the slider 801.

[0021] Working principle: When the user uses it and needs to replace a certain main air duct body 1, first unscrew the bolt 11, thus losing the limitation on the limiting block 10 and the threaded rod 4. At the same time, pull the head and tail two traction wires 5 of the main air duct body 1 to be replaced. Pulling the traction wire 5 drives the clockwork spring 12 to unwind and be unwound on the installation housing 7, thereby driving the installation block 13 and the limiting block 10 to rotate on the installation housing 7. Since the sealing tube 9 is limited by the limiting rods 101, the sealing tube 9 moves on the main air duct body 1, thus losing the limitation on the main air duct body 1. Then rotate the limiting block 10 and the threaded rod 4 to rotate on the U-shaped mounting plate 3. Due to the limitation of the slider 801, the connecting block 8, the fixing plate 6 and the main air duct body 1 threadedly connected to the threaded rod 4 move downward, thereby achieving the purpose of facilitating the replacement of the main air duct body 1 and facilitating maintenance.

[0022] By setting the U-shaped mounting plate 3, the threaded rod 4, the fixing plate 6, the mounting housing 7 and the connecting block 8, when the user uses this device, when it is necessary to replace a certain air duct main body 1, first pull the head and tail two traction wires 5 of the air duct main body 1 to be replaced, so as to drive the sealing tube 9 to move on the air duct main body 1, thus losing the limit on the air duct main body 1, so that the air duct main body 1 can be lowered separately, and then rotate the limit block 10 to make the connecting block 8 and the air duct main body 1 move downward, so as to achieve the purpose of facilitating the replacement of the air duct main body 1 and facilitating maintenance.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevating air duct device for tunnel engineering, comprising a plurality of air duct bodies (1) and a tunnel body (2), characterized in that: A plurality of the air duct bodies (1) are all located inside the tunnel body (2). Lifting mechanisms are provided on a plurality of the air duct bodies (1), movable components are provided on a plurality of the lifting mechanisms, and a plurality of the air duct bodies (1) are connected end to end through two groups of mounting components; The lifting mechanism includes a U-shaped mounting plate (3). The U-shaped mounting plate (3) is fixedly connected to the inner side wall of the tunnel body (2). A connecting block (8) is slidably connected to the U-shaped mounting plate (3). A threaded rod (4) is inserted into the connecting block (8). The threaded rod (4) is threadedly connected to the connecting block (8). The connecting block (8) penetrates through the U-shaped mounting plate (3), and the connecting block (8) is rotatably connected to the U-shaped mounting plate (3) through a bearing. A limiting block (10) is fixedly connected to the threaded rod (4). The limiting block (10) is located below the U-shaped mounting plate (3). A bolt (11) is threadedly connected to the limiting block (10). The bolt (11) extends into the U-shaped mounting plate (3). A fixing plate (6) is fixedly connected to the connecting block (8). The mounting component is located on the fixing plate (6), and the air duct body (1) is located on the mounting component.

2. The liftable air duct device for tunnel engineering according to claim 1, characterized in that: The mounting component includes a mounting shell (7). The air duct body (1) is inserted into the mounting shell (7), and the air duct body (1) is fixedly connected to the mounting shell (7). The mounting shell (7) is fixedly connected to the fixing plate (6). A spiral spring (12) is provided inside the mounting shell (7). One end of the spiral spring (12) is fixedly connected to a traction wire (5). The traction wire (5) is wound around the spiral spring (12). The other end of the spiral spring (12) is fixedly connected to a mounting block (13). A limiting block (10) is fixedly connected to the mounting block (13). The limiting block (10) is located between the mounting shell (7) and the air duct body (1). A sealing tube (9) is inserted into the limiting block (10). The sealing tube (9) is threadedly connected to the limiting block (10). The sealing tube (9) is slidably connected to the air duct body (1), and the sealing tube (9) abuts against the air duct body (1).

3. The liftable air duct device for tunnel engineering according to claim 2, characterized in that: Two limiting rods (101) are fixedly connected to the air duct body (1). A limiting groove (901) is formed in the sealing tube (9). The limiting rods (101) are located inside the limiting groove (901).

4. The liftable air duct device for tunnel engineering according to claim 2, wherein: A sphere is fixedly connected to the bottom end of the traction wire (5). Through holes corresponding to the traction wire (5) are formed in the fixing plate (6) and the mounting shell (7).

5. The liftable air duct device for tunnel engineering according to claim 1, wherein: A slider (801) is fixedly connected to one side of the connecting block (8) close to the U-shaped mounting plate (3). A sliding groove (301) is formed in the U-shaped mounting plate (3). The slider (801) is slidably connected inside the sliding groove (301).

6. The liftable air duct device for tunnel engineering according to claim 5, characterized in that: The cross-sectional shape of the slider (801) is trapezoidal, and the cross-sectional shape of the sliding groove (301) correspondingly is also trapezoidal.

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