Ventilation device for railway tunnel construction

Abstract

The utility model discloses a railway tunnel construction ventilation device, which belongs to the technical field of tunnel construction equipment and comprises a bottom plate, the top of the bottom plate is fixedly connected with a support rod, the top end of the support rod is fixedly connected with a ventilation pipe, and the end part of the ventilation pipe is fixedly sleeved with a hose. The first motor is used for driving the fan blades to rotate, so that the air suction pipe, the hose and the ventilation pipe generate suction force to guide out air in the tunnel, the filter plate is used for filtering dust in the air, and the situation that the dust falls on the fan blades and the first motor to affect the service life of the fan blades and the first motor is avoided; a second motor is used for driving a cam to regularly rotate for a plurality of integer circles, the cam is used for pushing the filter plate, and a spring is used for resetting pull force of the filter plate, so that the filter plate generates a vibration sense, dust filtered by the filter plate falls into a collecting box, the filtering effect of the filter plate is ensured, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, and more specifically to a railway tunnel construction ventilation device. Background Art

[0002] With the rapid development of railway, highway and water diversion projects, there are more and more long and extra-long tunnels. In order to increase the excavation surface and realize rapid construction, most of them adopt the construction method of setting up inclined shaft auxiliary tunnel. As the tunnel is excavated, the construction environment gradually deteriorates, and tunnel ventilation becomes one of the biggest problems in tunnel construction.

[0003] After searching, the utility model patent with announcement number CN211524867U discloses a ventilation device for railway tunnel construction, including a base, pulleys are symmetrically fixedly connected to the front and rear sides of the bottom of the base, and concave support rods are symmetrically fixedly connected to the left and right sides of the top of the base, a screw rod is threadedly connected through the center of the outer side of the concave support rod, a rotating wheel handle is fixedly connected to the outer side of the screw, and a push plate is fixedly connected to the inner side of the screw; through the concave support rod, screw, rotating wheel handle, push plate, electric telescopic rod and suction plate, the rotating wheel handle can be turned well, the rotating wheel handle drives the screw rod to rotate, and the screw drives the push plate to move, so that the push plate fixes the ventilation pipe, and the electric telescopic rod on the push plate is extended and retracted at the same time, so that the electric telescopic rod drives the suction plate to move, and the suction plate can firmly absorb and fix the ventilation pipe, thereby avoiding the situation that the ventilation pipe is unstable and falls during work.

[0004] However, the above patent has the following shortcomings: there is a lot of dust inside the tunnel during tunnel construction, and the motor and fan inside the pipe are easily attached with dust during ventilation, which affects their service life and the ventilation quality; in addition, it is only convenient to extract air from specific positions in the tunnel, which affects the quality of ventilation in the tunnel. Therefore, we propose a railway tunnel construction ventilation device. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a railway tunnel construction ventilation device.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A railway tunnel construction ventilation device comprises a base plate, the top of the base plate is fixedly connected to a support rod, the top of the support rod is fixedly connected to a ventilation pipe, the end of the ventilation pipe is fixedly sleeved with a hose, the end of the hose is fixedly sleeved with an air suction pipe, a rotating mechanism is provided on the top of the base plate, the inner cavity of the ventilation pipe is provided with a fan frame, a first motor is fixedly installed on the fan frame, a fan blade is fixedly connected to the output shaft of the first motor, a discharge port is provided at the bottom of the ventilation pipe, a collecting bin is provided at the bottom of the ventilation pipe and below the discharge port, a collecting box is sleeved in the inner cavity of the collecting bin, two support blocks are fixedly connected to the inner wall of the ventilation pipe, the sides of the two support blocks are fixedly connected with springs, the ends of the two springs are fixedly connected with filter plates, the end faces of the filter plates are in contact with the inner wall of the collecting box, and a pushing mechanism is provided on the ventilation pipe.

[0008] As a preferred scheme of the present invention, the rotating mechanism includes a supporting column fixedly connected to the top surface of the bottom plate and an arc-shaped slide groove opened on the top surface of the bottom plate, the top of the supporting column is fixedly connected to the supporting plate, a swing base shaft is fixedly sleeved on the supporting plate, a swing plate is sleeved on the swing base shaft, a moving column is fixedly sleeved on one end of the swing plate, the bottom end of the moving column extends to the inner cavity of the arc-shaped slide groove, the top of the moving column is connected to the bottom surface of the suction pipe, a transmission waist hole groove is opened at the other end of the swing plate, a third motor is fixedly installed on the bottom surface of the supporting plate, the output shaft of the third motor extends to the top of the supporting plate and is fixedly connected to a rotating disk, the top surface of the rotating disk is fixedly connected to a transmission column, and the end of the transmission column is movably sleeved to the inner cavity of the transmission waist hole groove.

[0009] As a preferred solution of the utility model, the pushing mechanism includes a second motor fixedly mounted on the outside of the ventilation pipe and a rotating shaft rotatably connected to the inner cavity of the ventilation pipe, the output shaft of the second motor is connected to the end of the rotating shaft, a cam is fixedly connected to the outside of the rotating shaft, and the end of the cam is in contact with the filter plate.

[0010] As a preferred solution of the utility model, a plurality of self-locking casters are fixedly mounted on the bottom of the base plate, and a controller is arranged on the top of the base plate.

[0011] As a preferred solution of the utility model, the side of the filter plate fits with the inner wall of the ventilation pipe, the side of the collection box fits with the inner wall of the collection bin, and one end of the collection box is movably sleeved to the outside of the collection bin.

[0012] As a preferred solution of the utility model, the side surface of the transmission column is in contact with the inner wall of the transmission waist hole groove, and the outer side of the movable column is in contact with the inner wall of the arc-shaped sliding groove.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, the first motor is used to drive the fan blades to rotate so that the suction pipe, the hose and the ventilation pipe generate suction to discharge the gas in the tunnel, and the filter plate is used to filter the dust in the gas to prevent the dust from falling on the fan blades and the first motor and affecting their service life; and the second motor is used to drive the cam to rotate a number of integer circles at a fixed time, and the filter plate is pushed by the cam and the spring is used to pull the filter plate back to make the filter plate vibrate, so that the dust filtered by the filter plate falls into the collection box, thereby ensuring the filtering effect of the filter plate.

[0015] (2) In the utility model, the rotating disk and the transmission column are driven to rotate by the third motor, and the cooperation between the transmission column and the transmission waist hole groove makes the swing plate, the movable column and the suction pipe swing around the swing base axis, so as to adjust the suction position of the suction pipe, so as to realize the suction of gas at different positions, so as to ventilate different directions, thereby improving the working quality of the ventilation device for railway tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the front side of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the back side of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the rotating mechanism of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the swing plate of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Bottom plate; 2. Support rod; 3. Ventilation duct; 4. Hose; 5. Fan frame; 6. First motor; 7. Fan blade; 8. Rotating shaft; 9. Second motor; 10. Cam; 11. Support block; 12. Spring; 13. Filter plate; 14. Feeding port; 15. Collection bin; 16. Collection box; 17. Pushing mechanism; 18. Rotating mechanism; 19. Support column; 20. Support plate; 21. Third motor; 22. Rotating disk; 23. Transmission column; 24. Swinging plate; 25. Swinging base shaft; 26. Moving column; 27. Arc slide; 28. Controller; 29. ​​Self-locking caster; 30. Suction duct; 31. Transmission waist hole groove. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Example:

[0027] See also Figure 1-5 A railway tunnel construction ventilation device comprises a base plate 1, a support rod 2 is fixedly connected to the top of the base plate 1, a ventilation pipe 3 is fixedly connected to the top of the support rod 2, a hose 4 is fixedly sleeved at the end of the ventilation pipe 3, a suction pipe 30 is fixedly sleeved at the end of the hose 4, a rotating mechanism 18 is arranged on the top of the base plate 1, a fan frame 5 is arranged in the inner cavity of the ventilation pipe 3, a first motor 6 is fixedly mounted on the fan frame 5, a fan blade 7 is fixedly connected to the output shaft of the first motor 6, a feeding port 14 is arranged at the bottom of the ventilation pipe 3, a collecting bin 15 is arranged at the bottom of the ventilation pipe 3 and below the feeding port 14, a collecting box 16 is sleeved in the inner cavity of the collecting bin 15, two support blocks 11 are fixedly connected to the inner wall of the ventilation pipe 3, springs 12 are fixedly connected to the sides of the two support blocks 11, filter plates 13 are fixedly connected to the ends of the two springs 12, the end faces of the filter plates 13 are in contact with the inner wall of the collecting box 16, and a pushing mechanism 17 is arranged on the ventilation pipe 3.

[0028] For details, please refer to Figure 1 , Figure 4 and Figure 5 The rotating mechanism 18 includes a supporting column 19 fixedly connected to the top surface of the bottom plate 1 and an arc-shaped slide groove 27 opened on the top surface of the bottom plate 1. The top of the supporting column 19 is fixedly connected to the supporting plate 20, and a swing base shaft 25 is fixedly sleeved on the supporting plate 20. A swing plate 24 is sleeved on the swing base shaft 25. A moving column 26 is fixedly sleeved at one end of the swing plate 24. The bottom end of the moving column 26 extends to the inner cavity of the arc-shaped slide groove 27. The top of the moving column 26 is connected to the bottom surface of the suction pipe 30. A transmission waist hole groove 31 is opened at the other end of the swing plate 24. A third motor 21 is fixedly installed on the bottom surface of the supporting plate 20. The output shaft of the third motor 21 extends to the top of the supporting plate 20 and is fixedly connected to the rotating disk 22. The top surface of the rotating disk 22 is fixedly connected to the transmission column 23, and the end of the transmission column 23 is movably sleeved to the inner cavity of the transmission waist hole groove 31.

[0029] In this embodiment, the swing base shaft 25 and the arc-shaped slide groove 27 are arranged concentrically, ensuring that the moving column 26 can slide smoothly in the arc-shaped slide groove 27 when the swing plate 24 and the moving column 26 rotate around the swing base shaft 25 .

[0030] For details, please refer to Figure 1 and Figure 3 The driving mechanism 17 includes a second motor 9 fixedly mounted on the outside of the ventilation pipe 3 and a rotating shaft 8 rotatably connected to the inner cavity of the ventilation pipe 3. The output shaft of the second motor 9 is connected to the end of the rotating shaft 8. A cam 10 is fixedly connected to the outside of the rotating shaft 8, and the end of the cam 10 is in contact with the filter plate 13.

[0031] In this embodiment, when the cam 10 does not rotate, the end surface of the filter plate 13 close to the hose 4 is just flush with the inner wall of the collection box 16. When the cam 10 rotates, the cam 10 pushes the filter plate 13 to move toward the side close to the hose 4.

[0032] For details, please refer to Figure 3 A plurality of self-locking casters 29 are fixedly mounted on the bottom of the base plate 1 , and a controller 28 is disposed on the top of the base plate 1 .

[0033] In this embodiment, the self-locking casters 29 are used to drive the device to move, and the rotating mechanism 18 is used to control the device.

[0034] For details, please refer to Figure 3 The side of the filter plate 13 is in contact with the inner wall of the ventilation pipe 3 , the side of the collection box 16 is in contact with the inner wall of the collection bin 15 , and one end of the collection box 16 is movably sleeved to the outside of the collection bin 15 .

[0035] In this embodiment, the contact between the side surface of the filter plate 13 and the inner wall of the ventilation pipe 3 is utilized to ensure that the filter plate 13 can completely filter the dust in the wind passing through the inner cavity of the ventilation pipe 3 .

[0036] For details, please refer to Figure 5 The side surface of the transmission column 23 is in contact with the inner wall of the transmission waist hole groove 31 , and the outer side of the moving column 26 is in contact with the inner wall of the arc-shaped sliding groove 27 .

[0037] In this embodiment, the contact between the transmission column 23 and the inner wall of the transmission waist hole groove 31 is used to avoid shaking between the transmission column 23 and the swing plate 24, and the contact between the inner wall of the arc-shaped slide groove 27 and the side of the movable column 26 is used to ensure the stability of the movable column 26.

[0038] Working principle: When in use, first use the self-locking casters 29 to move the device to the position in the tunnel where ventilation is required, connect the remote ventilation pipe to the end of the ventilation pipe 3 away from the hose 4, and start the first motor 6 to drive the fan blades 7 to rotate. The rotation of the fan blades 7 allows the ventilation pipe 3 to draw air from the hose 4, so that the hose 4 draws air into the suction pipe 30. The suction pipe 30 generates suction to draw the gas in the tunnel. At this time, the pressure inside the tunnel is reduced, so that the air outside the tunnel entrance enters the tunnel. Then, when the gas in the tunnel moves in the ventilation pipe 3, the filter plate 13 is used to filter the dust in the wind. In addition, the second motor 9 is started at a fixed time to drive the rotating shaft 8 and the cam 10 to rotate a number of integer circles. The cam 1 0 pushes the filter plate 13, and at the same time, the restoring elastic force of the spring 12 drives the filter plate 13 to reset in time, and the vibration generated when the filter plate 13 moves is used to shake off the filtered dust, and the collecting box 16 is used to collect the fallen dust, and finally the third motor 21 is started to drive the rotating disk 22 and the transmission column 23 to rotate. At this time, the transmission column 23 slides in the transmission waist hole groove 31 to make the swing plate 24 swing around the swing base shaft 25, and the swing plate 24 drives the moving column 26 to slide in the arc-shaped slide groove 27. At the same time, the moving column 26 drives the suction pipe 30 to swing, so as to adjust the suction position of the suction pipe 30, and then realize the suction of gas at different positions, so as to ventilate different directions.

[0039] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A railway tunnel construction ventilation device, comprising a bottom plate (1), Features: The top of the base plate (1) is fixedly connected to a support rod (2), the top of the support rod (2) is fixedly connected to a ventilation pipe (3), the end of the ventilation pipe (3) is fixedly sleeved with a hose (4), the end of the hose (4) is fixedly sleeved with an air suction pipe (30), a rotating mechanism (18) is provided at the top of the base plate (1), the inner cavity of the ventilation pipe (3) is provided with a fan frame (5), a first motor (6) is fixedly mounted on the fan frame (5), the output shaft of the first motor (6) is fixedly connected to a fan blade (7), and the bottom of the ventilation pipe (3) is provided with a fan. A discharge port (14), a collecting bin (15) is arranged at the bottom of the ventilation pipe (3) and below the discharge port (14), the inner cavity of the collecting bin (15) is sleeved with a collecting box (16), the inner wall of the ventilation pipe (3) is fixedly connected with two supporting blocks (11), the sides of the two supporting blocks (11) are fixedly connected with springs (12), the ends of the two springs (12) are fixedly connected with filter plates (13), the end faces of the filter plates (13) are in contact with the inner wall of the collecting box (16), and a pushing mechanism (17) is arranged on the ventilation pipe (3).

2. A railway tunnel construction ventilation device according to claim 1, Features: The rotating mechanism (18) comprises a supporting column (19) fixedly connected to the top surface of the bottom plate (1) and an arc-shaped sliding groove (27) provided on the top surface of the bottom plate (1); the top end of the supporting column (19) is fixedly connected to a supporting plate (20); a swing base shaft (25) is fixedly sleeved on the supporting plate (20); a swing plate (24) is sleeved on the swing base shaft (25); a moving column (26) is fixedly sleeved on one end of the swing plate (24); the bottom end of the moving column (26) extends to the inner cavity of the arc-shaped sliding groove (27). The top of the movable column (26) is connected to the bottom surface of the suction pipe (30), the other end of the swing plate (24) is provided with a transmission waist hole groove (31), the bottom surface of the support plate (20) is fixedly mounted with a third motor (21), the output shaft of the third motor (21) extends to the top of the support plate (20) and is fixedly connected with a rotating disk (22), the top surface of the rotating disk (22) is fixedly connected with a transmission column (23), and the end of the transmission column (23) is movably sleeved into the inner cavity of the transmission waist hole groove (31).

3. A railway tunnel construction ventilation device according to claim 1, Features: The pushing mechanism (17) comprises a second motor (9) fixedly mounted on the outside of the ventilation pipe (3) and a rotating shaft (8) rotatably connected to the inner cavity of the ventilation pipe (3); the output shaft of the second motor (9) is connected to the end of the rotating shaft (8); a cam (10) is fixedly connected to the outside of the rotating shaft (8); and the end of the cam (10) is in contact with the filter plate (13).

4. A railway tunnel construction ventilation device according to claim 1, Features: A plurality of self-locking casters (29) are fixedly mounted on the bottom of the base plate (1), and a controller (28) is arranged on the top of the base plate (1).

5. A railway tunnel construction ventilation device according to claim 1, Features: The side surface of the filter plate (13) is in contact with the inner wall of the ventilation pipe (3), the side surface of the collection box (16) is in contact with the inner wall of the collection bin (15), and one end of the collection box (16) is movably sleeved to the outside of the collection bin (15).

6. A railway tunnel construction ventilation device according to claim 2, Features: The side surface of the transmission column (23) is in contact with the inner wall of the transmission waist hole groove (31), and the outer side of the movable column (26) is in contact with the inner wall of the arc-shaped sliding groove (27).

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