Tunnel harmful gas emission device

Abstract

The utility model discloses a tunnel harmful gas emission device, which relates to the technical field of tunnel construction ventilation, and comprises an air outlet structure, the air outlet structure comprises a corrugated pipe, an air outlet part and two groups of driving structures, and the driving structures are respectively arranged on the corresponding sides between the air outlet part and a ventilation pipe in a matching way; and each driving structure comprises an arc-shaped rod, an upper hinge rod and a lower hinge rod, the arc-shaped rods are fixedly connected to the side face of the air outlet part, and a swing structure is arranged at the end, away from the rotating rod, of the poke rod in a matched mode. Power is provided through the swing structure, the linkage rod can push the upper hinge rod back and forth, so that the upper hinge rod rotates around the fixed shaft, the arc-shaped rod does arc-shaped track movement back and forth around the fixed shaft, the outlet direction of the air outlet part can swing up and down, and the air outlet direction of the air outlet part is changed, so that a larger range is covered as much as possible; and the problem that local air quality is relatively good while other places are relatively poor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction ventilation, and particularly relates to a tunnel harmful gas emission device. Background Art

[0002] A tunnel is an engineering structure buried in the stratum and is a form of human utilization of underground space. During tunnel construction, the sources of harmful gases in the tunnel mainly include drill dust, blasting fumes, vehicle exhaust and vehicle dust from transportation, sprayed concrete dust, water mist, gas, radon and other harmful gases, as well as high geothermal environments. In order to ensure the health of construction workers and ensure the smooth progress of construction, ventilation methods must be adopted to solve these problems.

[0003] Currently, the most commonly used tunnel construction ventilation and dust removal method for discharging harmful gases is forced ventilation. Forced ventilation means that the fan and the starting device are installed in fresh air at a certain distance from the tunnel. The fan presses fresh air flow through the pipeline to the excavation working face, and the harmful gases at the tunnel working face are discharged along the tunnel with the air flow. The advantage of forced ventilation is low cost.

[0004] In the prior art, the position of the air outlet of the ventilation pipeline is generally fixed, resulting in a certain direction of the air flow introduced, which can only blow in one direction, thereby causing a relatively high air quality in a local area of the tunnel, while the air quality in other places will be relatively poor. Content of the Utility Model

[0005] The purpose of the utility model is to provide a tunnel harmful gas emission device to solve the technical problem of poor ventilation effect with a fixed air outlet in the prior art.

[0006] The technical problem to be solved by the utility model can be realized through the following technical solutions:

[0007] A tunnel harmful gas emission device includes a ventilation pipe fixed inside the tunnel body. A construction fan is connected to one end of the ventilation pipe close to the outlet of the tunnel body. The device further includes:

[0008] The air outlet structure includes a bellows, an air outlet part and a driving structure, the bellows is cooperatively connected between the ventilation pipe and the air outlet part, the driving structure is provided with two groups, which are respectively cooperatively arranged on the corresponding sides between the air outlet part and the ventilation pipe, each group of the driving structure includes an arc rod, an upper hinge rod and a lower hinge rod, the arc rod is fixedly connected to the side of the air outlet part, a plurality of teeth are distributed on one side of the inner arc of the arc rod, the upper hinge rod includes a rotating rod and a toggle rod, one end of the arc rod is rotationally connected to the end of the rotating rod, and the other end is rotationally connected to the end of the lower hinge rod, a fixed shaft is fixed to the side of the ventilation pipe, the other end of the rotating rod and the other end of the lower hinge rod are both rotationally connected to the fixed shaft, and the toggle rod is cooperatively provided with a swing structure at one end away from the rotating rod.

[0009] As a further solution of the utility model: the length of the rotating rod is the same as the length of the lower hinged rod.

[0010] As a further solution of the utility model: the swing structure includes a linkage rod, a driving rod and a motor, the motor is fixedly connected to the side of the ventilation pipe, the output end of the motor is fixedly connected to the driving rod, the end of the driving rod away from the motor is connected to one end of the linkage rod, and the other end of the linkage rod is rotationally connected to the upper hinged rod.

[0011] As a further solution of the utility model: a limiting structure is arranged on the side, and two groups of the limiting structures are arranged, each group of the limiting structures includes a fixing rod and a gear, the fixing rod is fixedly connected to the side of the ventilation pipe, and one end of the fixing rod away from the ventilation pipe is rotationally connected to the gear, and the gear is meshingly connected to the teeth.

[0012] As a further solution of the utility model: limit arc plates are arranged on both the front and rear sides of the arc-shaped rod, and the gear is slidably connected to the limit arc plates.

[0013] As a further solution of the utility model: the end of the air outlet away from the corrugated tube is trumpet-shaped.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model provides power through a swing structure. The linkage rod can push the upper hinge rod back and forth, so that the upper hinge rod rotates around the fixed axis, and the arc rod moves back and forth in an arc trajectory around the fixed axis. The outlet direction of the air outlet can swing up and down. By changing the air outlet direction of the air outlet, a larger range can be covered as much as possible, avoiding the problem that the air quality is better in some places and worse in other places.

[0016] 2. When the arc-shaped rod of the present utility model moves along an arc-shaped trajectory around the fixed axis, the gear can be slidably connected to the limiting arc plates on both sides, limiting the movement of the arc-shaped rod and preventing the air outlet part from tilting due to excessive wind pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the mating connection structure between the air outlet part and the corrugated pipe of the present utility model;

[0020] Figure 3 is a schematic diagram of the structure of the teeth and the gear of the present utility model in cooperation.

[0021] In the figure: 1, tunnel body; 2, ventilation pipe; 3, construction fan; 4, corrugated pipe; 5, air outlet part; 6, arc-shaped rod; 7, teeth; 8, upper hinge rod; 9, lower hinge rod; 10, fixed rod; 11, gear; 12, linkage rod; 13, driving rod; 14, motor; 15, limiting arc plate; 16, fixed axis. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 1 - 3 shown, a tunnel harmful gas emission device includes a ventilation pipe 2, the ventilation pipe 2 is fixedly connected inside the tunnel body 1, one end of the ventilation pipe 2 close to the outlet of the tunnel body 1 is fixedly connected with a construction fan 3, the construction fan 3 is installed at a certain distance from the tunnel in fresh air, the construction fan 3 presses the fresh air flow to the excavation working face through a pipeline, and the harmful gas inside the tunnel body 1 during operation is discharged along the tunnel with the air flow. The emission grasping device further includes an air outlet structure and a limiting structure;

[0024] The air outlet structure includes a bellows 4, an air outlet 5 and a driving structure. The bellows 4 is connected to the end of the ventilation pipe 2 away from the hole of the tunnel body 1. The end of the bellows 4 away from the ventilation pipe 2 is fixedly connected to the air outlet 5. The ventilation pipe 2 and the air outlet 5 are connected through the bellows 4. The bellows 4 has good flexibility due to its unique structural design. The driving structure is provided with two groups, which are respectively arranged on the corresponding sides between the air outlet 5 and the ventilation pipe 2. Each group of driving structures includes an arc rod 6, an upper hinge rod 8 and a lower hinge rod 9. The arc rod 6 is fixedly connected to the side of the air outlet 5, and the arc rod 6 is fixedly connected to the side of the air outlet 5. The inner arc side of the arc rod 6 faces the end close to the ventilation pipe 2, and a plurality of teeth 7 are fixedly arranged on the inner arc side of the arc rod 6. The upper hinge rod 8 includes a rotating rod and a toggle rod. One end of the arc rod 6 is rotationally connected to the end of the rotating rod through a rotating shaft, and the other end is rotationally connected to the end of the lower hinge rod 9 through a rotating shaft. A fixed shaft 16 is fixedly connected to the side of the ventilation pipe 2, and the other end of the rotating rod and the other end of the lower hinge rod 9 are both rotationally connected to the fixed shaft 16 through a rotating shaft. The arc rod 6 can rotate around the fixed shaft 16 as the center of the circle, and a swing structure is provided at the end of the toggle rod away from the rotating rod;

[0025] There are two groups of limiting structures, which cooperate with the corresponding teeth 7.

[0026] In some specific embodiments, such as Figure 2 As shown, in order to facilitate the arc rod 6 to rotate around the fixed axis 16, the length of the rotating rod is the same as the length of the lower hinge rod 9, so that the gear 11 mentioned below can limit the rotation of the arc rod 6.

[0027] In some specific embodiments, such as Figure 2 As shown, in order to facilitate driving the upper hinged rod 8 to rotate around the fixed axis 16, the swing structure includes a linkage rod 12, a driving rod 13 and a motor 14. The motor 14 is fixedly connected to the side of the ventilation pipe 2, and the output end of the motor 14 is fixedly connected to the driving rod 13. The end of the driving rod 13 away from the motor 14 is rotationally connected to one end of the linkage rod 12 through a rotating shaft, and the other end of the linkage rod 12 is rotationally connected to the upper hinged rod 8 through a rotating shaft. When the motor 14 is started to drive the driving rod 13 to rotate, the driving rod 13 drives the linkage rod 12 to move the upper hinged rod 8 up and down, so that the other end of the upper hinged rod 8 drives the arc rod 6 to rotate up and down around the fixed axis 16, thereby changing the air outlet direction of the air outlet 5.

[0028] In some specific embodiments, such as Figure 3As shown in the figure, in order to facilitate the realization of the stability of the movement of the air outlet part 5, each set of limiting structures includes a fixed rod 10 and a gear 11. The fixed rod 10 is fixedly connected to the side of the ventilation pipe 2. One end of the fixed rod 10 away from the ventilation pipe 2 is rotatably connected to the gear 11 through a rotating shaft. The gear 11 is meshed with the tooth 7. When the arc rod 6 swings up and down along the fixed shaft 16, the gear 11 meshed with the tooth 7 rotates, enhancing the stability of the movement of the gear 11.

[0029] In some specific embodiments, such as Figure 3 As shown in the figure, in order to limit the rotation of the arc rod 6, limiting arc plates 15 are fixedly arranged on both the front and rear sides of the arc rod 6. The gear 11 is slidably connected to the limiting arc plates 15, and the gear 11 is slidably connected to the limiting arc plates 15 on both sides to achieve limiting.

[0030] In some specific embodiments, such as Figure 2 As shown in the figure, in order to facilitate the outward diffusion of the wind, the end of the air outlet part 5 away from the corrugated pipe 4 is in a horn shape.

[0031] In order to facilitate the understanding of this solution by those skilled in the art, the working principle of this solution will be briefly described in combination with a specific application scenario:

[0032] During actual operation, power is provided by the motor 14. The output end of the motor 14 drives the drive rod 13 to rotate. During the rotation of the drive rod 13, the linkage rod 12 is driven to push the upper hinge rod 8 back and forth, causing the upper hinge rod 8 to rotate around the fixed shaft 16. Since the end of the upper hinge rod 8 is rotatably connected to the arc rod 6, the arc rod 6 moves back and forth along an arc trajectory around the fixed shaft 16, and the outlet direction of the air outlet part 5 can swing up and down. By changing the air outlet direction of the air outlet part 5, a larger range can be covered as much as possible, avoiding the problem that the air quality is better in some local areas while being worse in other places.

[0033] When the arc rod 6 moves along an arc trajectory around the fixed shaft 16, the gear 11 can be slidably connected to the limiting arc plates 15 on both sides to limit the movement of the arc rod 6, avoiding the air outlet part 5 from tilting due to excessive wind pressure.

[0034] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A tunnel harmful gas emission device, comprising a ventilation pipe (2), wherein the ventilation pipe (2) is fixed inside a tunnel body (1), and a construction fan (3) is connected to one end of the ventilation pipe (2) close to the outlet of the tunnel body (1), characterized in that: Also includes: An air outlet structure, the air outlet structure comprising a bellows (4), an air outlet portion (5) and a driving structure, the bellows (4) being cooperatively connected between the ventilation pipe (2) and the air outlet portion (5), the driving structure comprising two groups, which are cooperatively arranged on corresponding sides between the air outlet portion (5) and the ventilation pipe (2), each group of the driving structure comprising an arc-shaped rod (6), an upper hinged rod (8) and a lower hinged rod (9), the arc-shaped rod (6) being fixedly connected to the side of the air outlet portion (5), the arc-shaped rod (8) and the ... upper hinged rod (8) and the lower hinged rod (9), the arc-shaped rod (6) and the lower hinged rod (9), the arc-shaped rod (6) and the lower hinged rod (9), the arc-shaped (6) A plurality of teeth (7) are distributed on one side of the inner arc, the upper hinged rod (8) comprises a rotating rod and a toggle rod, one end of the arc-shaped rod (6) is rotationally connected to the end of the rotating rod, and the other end is rotationally connected to the end of the lower hinged rod (9), a fixed shaft (16) is fixed on the side of the ventilation pipe (2), the other end of the rotating rod and the other end of the lower hinged rod (9) are both rotationally connected to the fixed shaft (16), and the toggle rod is provided with a swing structure at one end away from the rotating rod.

2. A tunnel harmful gas emission device according to claim 1, characterized in that: The length of the rotating rod is the same as that of the lower hinge rod (9).

3. A tunnel harmful gas emission device according to claim 1, characterized in that: The swing structure comprises a linkage rod (12), a driving rod (13) and a motor (14); the motor (14) is fixedly connected to the side of the ventilation pipe (2); the output end of the motor (14) is fixedly connected to the driving rod (13); one end of the driving rod (13) away from the motor (14) is connected to one end of the linkage rod (12); and the other end of the linkage rod (12) is rotationally connected to the upper hinge rod (8).

4. A tunnel harmful gas emission device according to claim 2, characterized in that: A limiting structure is arranged on the side of the ventilation pipe (2), and two groups of the limiting structures are arranged. Each group of the limiting structures comprises a fixing rod (10) and a gear (11). The fixing rod (10) is fixedly connected to the side of the ventilation pipe (2), and one end of the fixing rod (10) away from the ventilation pipe (2) is rotationally connected to the gear (11), and the gear (11) is meshingly connected to the teeth (7).

5. A tunnel harmful gas emission device according to claim 4, characterized in that: The arc-shaped rod (6) is provided with limiting arc plates (15) on both the front and rear sides, and the gear (11) is slidably connected to the limiting arc plates (15).

6. A tunnel harmful gas emission device according to claim 1, characterized in that: The end of the air outlet (5) away from the corrugated tube (4) is in a trumpet shape.

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