A trestle bridge that can be used for tunnel dust removal

Abstract

The present invention discloses a trestle bridge that can be used for dust removal in a tunnel, comprising a trestle bridge body and a dust removal fan, wherein a dust removal chamber is provided on the trestle bridge body, an air inlet and an air outlet are provided on the dust removal chamber, and an air filter is provided inside the dust removal chamber, wherein the air filter is located between the air inlet and the air outlet. The present invention sets the dust removal chamber on the trestle bridge body, and the dust removal chamber can move with the movement of the trestle bridge, and the trestle bridge body is closest to the front excavation of the tunnel, and has a good dust removal effect on the excavation, and does not need to develop a special vehicle, which is conducive to reducing costs, and also avoids the problem of dust removal vehicles occupying limited space in the tunnel. While dust removal is being performed, other operating equipment can also use the trestle bridge body to pass, which is conducive to ensuring construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction equipment, and in particular to a trestle bridge that can be used for tunnel dust removal. Background Art

[0002] During the tunnel construction process, blasting, excavation, drilling and equipment movement will generate a lot of dust. The dust in the semi-enclosed tunnel will cause a certain degree of harm to the health of the workers in the tunnel. At the same time, the air carrying a lot of dust flowing out of the tunnel will also damage the surrounding environment. In recent years, the promotion of complete sets of tunnel construction equipment has greatly promoted the improvement of tunnel construction technology. At the same time, under the concept of people-oriented and environmental protection, tunnel dust removal equipment is gradually being promoted.

[0003] In the prior art, a separate tunnel dust removal chamber needs to be towed by a vehicle, which is not flexible enough. The tunnel dust removal vehicle installs the dust removal facilities on the vehicle, which greatly increases the adaptability of the dust removal equipment. However, this type of dust removal vehicle also has some disadvantages: 1) The dust removal equipment needs to be installed on a special vehicle, which is relatively expensive; 2) The dust removal is not timely enough, especially during blasting, it takes a certain amount of time for the equipment or operators to enter the hole for operation. If it is started in advance or stopped later, the energy consumption cost is high; 3) The dust removal position of the vehicle is relatively far back. Considering the vehicle's anti-blasting damage, vehicle volume, and passing capacity, the vehicle is generally parked at the rear end of the trestle for dust removal, which is far from the blasting point, resulting in average dust removal effect and a long total time to achieve the expected dust removal effect; 4) There is a problem of channel occupancy. The dust removal vehicle will occupy the construction channel when parked at any construction position in the tunnel, especially in single-line tunnels, which takes up more waiting time; 5) It is necessary to be equipped with a dedicated person to drive the vehicle and operate the equipment, which has a certain manpower cost. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a trestle bridge which is low in cost, easy to use and conducive to ensuring construction efficiency and can be used for tunnel dust removal.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A trestle bridge that can be used for tunnel dust removal comprises a trestle bridge body and a dust removal fan. The trestle bridge body is provided with a dust removal chamber, the dust removal chamber is provided with an air inlet and an air outlet and an air filter is arranged inside the chamber, and the air filter is located between the air inlet and the air outlet.

[0007] As a further improvement of the above technical solution: the dust removal chamber includes a dust removal area and a clean area, the air inlet is connected to the dust removal area, the air filter is arranged in the dust removal area and the outlet is connected to the clean area, and the air outlet is connected to the clean area.

[0008] As a further improvement of the above technical solution: the trestle body includes two rows of main beams and at least one row is a box-type structure, the dust removal area is arranged between the two rows of main beams, and the clean area is arranged inside the main beam of the box-type structure; or, the dust removal area is arranged inside the main beam of the box-type structure, and the clean area is arranged between the two rows of main beams.

[0009] As a further improvement of the above technical solution: the trestle body includes two rows of main beams and cross beams arranged between the two rows of main beams, at least one row of main beams is a box-type structure, the dust removal area is arranged below the cross beam, and the clean area is arranged inside the main beam of the box-type structure; or, the dust removal area is arranged inside the main beam of the box-type structure, and the clean area is arranged below the cross beam.

[0010] As a further improvement of the above technical solution: a back-blowing component for blowing away dust adsorbed by the air filter is provided in the clean area.

[0011] As a further improvement of the above technical solution: a conical dust collecting component is provided at the bottom of the dust removal area, and the dust collecting component is detachably connected to the dust removal chamber.

[0012] As a further improvement of the above technical solution: the two rows of main beams are both box-type structures, and the interior of one row of main beams forms an escape passage.

[0013] As a further improvement of the above technical solution: the dust removal fan includes an air inlet fan arranged at the air inlet and an air outlet fan arranged at the air outlet.

[0014] As a further improvement of the above technical solution: the air inlet is located at the front end of the trestle body, and the air outlet is located at the rear end of the trestle body.

[0015] As a further improvement of the above technical solution: the air filter is a cylindrical structure.

[0016] Compared with the prior art, the advantages of the present invention are: currently, the trestles have become one of the indispensable equipment for tunnel construction, and the dust removal chamber is arranged on the trestles body, and the dust removal chamber can move with the movement of the trestles, and the trestles body is closest to the front excavation of the tunnel, so the dust removal effect on the excavation is good, and there is no need to develop special vehicles, which is conducive to reducing costs and avoiding the problem of dust removal vehicles occupying limited space in the tunnel. While removing dust, other operating equipment can also use the trestles body to pass, which is conducive to ensuring construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of a trestle bridge that can be used for tunnel dust removal according to the present invention.

[0018] Figure 2The diagram is a top view of the structure of a trestle bridge that can be used for dust removal in tunnels according to the present invention.

[0019] Figure 3 It is a structural schematic diagram of the first arrangement of the dust removal chamber in the present invention.

[0020] Figure 4 It is a structural schematic diagram of the second arrangement of the dust removal chamber in the present invention.

[0021] The numbers in the figure represent: 1. trestle body; 11. main beam; 12. cross beam; 2. dust removal chamber; 21. air inlet; 22. air outlet; 23. dust removal area; 24. clean area; 3. air filter; 4. backblowing component; 5. dust collection component; 6. dust removal fan; 61. air inlet fan; 62. air outlet fan; 7. air inlet duct. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Embodiment 1

[0024] Figures 1 to 3 An embodiment of a trestle that can be used for tunnel dust removal of the present invention is shown. The trestle that can be used for tunnel dust removal of this embodiment includes a trestle body 1 and a dust removal fan 6. A dust removal chamber 2 is provided on the trestle body 1. The dust removal chamber 2 is provided with an air inlet 21 and an air outlet 22 and an air filter 3 is provided inside. The air filter 3 is located between the air inlet 21 and the air outlet 22.

[0025] At present, the trestle has become one of the indispensable equipment for tunnel construction. The dust removal chamber 2 is set on the trestle body 1. The dust removal chamber 2 can move with the movement of the trestle body 1. The trestle body 1 is closest to the front excavation of the tunnel, and the dust removal effect on the excavation is good. There is no need to develop a special vehicle, which is conducive to reducing costs and avoiding the problem of dust removal vehicles occupying limited space in the tunnel. While dust removal, other operating equipment can also use the trestle body 1 to pass, which is conducive to ensuring construction efficiency. When dust removal is required, the dust removal fan 6 is started, and the air mixed with dust in the tunnel enters the dust removal chamber 2 from the air inlet 21 under the action of the dust removal fan 6. After being filtered by the air filter 3 inside the dust removal chamber 2, the dust is collected in the dust removal chamber 2, and the filtered clean air is discharged from the air outlet 22, thereby reducing the dust content in the air in the tunnel. Among them, it is preferred to set a plurality of air filters 3, which is conducive to improving the dust removal effect.

[0026] Furthermore, in this embodiment, the dust removal chamber 2 includes a dust removal area 23 and a clean area 24, the air inlet 21 is connected to the dust removal area 23, the air filter 3 is arranged in the dust removal area 23 and the outlet is connected to the clean area 24, and the air outlet 22 is connected to the clean area 24. When working, the dust removal fan 6 is started, and the air mixed with dust in the tunnel enters the dust removal area 23 from the air inlet 21 under the action of the dust removal fan 6, flows out from the outlet into the clean area 24 after being filtered by the air filter 3, and finally discharged from the air outlet 22, so that the clean area 24 and the dust removal area 23 are separated, which is conducive to ensuring the cleanliness of the filtered air.

[0027] Furthermore, the trestle body 1 includes two rows of main beams 11 and both are box-type structures. The dust removal area 23 is arranged between the two rows of main beams 11, and the clean area 24 is arranged in the box-type main beam 11. The dust removal chamber 2 can make full use of the space between the two rows of main beams 11 and inside the main beam 11, does not occupy the limited space in the tunnel, and does not affect the passage of vehicles and other equipment from the main beam 11. The structure is compact and reasonable, and the box-type main beam 11 has high strength and light weight. Preferably, the clean area 24 is located in the cavity of any one row of main beams 11, and the cavity of the other row of main beams 11 is used as an escape passage, which is convenient for workers to escape in crisis situations.

[0028] As a preferred embodiment, a back-blowing component 4 for blowing away the dust adsorbed by the air filter 3 is provided in the clean zone 24. For example, it may be a purge fan, a pressure airbag, etc. The air filter 3 may be, for example, a cylindrical structure, with air intake on the circumferential surface and an outlet located at any end surface. After the air filter 3 has been used for a period of time, the dust is concentrated on the circumferential surface of the air filter 3. The purge fan or the pressure airbag is started to form a high-pressure gas to reversely purge the air filter 3 from the outlet on the end surface of the air filter 3, so that the dust adsorbed on the circumferential surface of the air filter 3 falls off, which is beneficial to extend the service life of the air filter 3 and reduce the cost of use. The back-blowing component 4 is arranged in the cavity of the main beam 11, and will not occupy the limited space in the tunnel. At the same time, the main beam 11 can also provide a certain degree of protection for the back-blowing component 4 to avoid damage from bumps, and the structure is compact and reasonable. Of course, in other embodiments, the dust removal area 23 can also be arranged inside the main beam 11, and the clean area 24 can be arranged between two rows of main beams 11, see Figure 3 , that is, the positions of the dust removal area 23 and the clean area 24 are swapped.

[0029] Furthermore, in this embodiment, a conical dust collecting component 5 is provided at the bottom of the dust removal area 23, and the dust collecting component 5 is detachably connected to the dust removal chamber 2 (for example, by a buckle, a threaded fastener, etc.). The dust that is swept away by the backflush component 4 moves along the conical surface to the dust collecting component 5 at the bottom of the dust removal area 23, which has a simple and reliable structure and is convenient for collecting dust.

[0030] As a preferred embodiment, the dust removal fan 6 includes an air inlet fan 61 arranged at the air inlet 21 and an air outlet fan 62 arranged at the air outlet 22, which is conducive to allowing the air in the tunnel to smoothly enter the dust removal chamber 2 and be smoothly discharged from the air outlet 22 after being filtered by each air filter 3.

[0031] Of course, in other embodiments, the dust removal fan 6 can also be arranged only at the air outlet 22. After the dust removal fan 6 is started and the air in the dust removal chamber 2 is discharged, a negative pressure is formed in the dust removal chamber 2, and the air in the tunnel enters the dust removal chamber 2 from the air inlet 21 under the action of the pressure difference; or, the dust removal fan 6 is only arranged at the air inlet 21, and the air in the tunnel can also enter the dust removal chamber 2; or, the dust removal fan 6 can also be installed on a bracket, and the air outlet side of the dust removal fan 6 is connected to the air inlet 21 of the dust removal chamber 2 through a pipe. This scheme can also enable the air in the tunnel to enter the dust removal chamber 2.

[0032] As a preferred embodiment, the air inlet 21 is located at the front end of the trestle body 1, and the air outlet 22 is located at the rear end of the trestle body 1. Generally speaking, the amount of dust generated by blasting and excavation in front of the tunnel is large. Setting the air inlet 21 at the front end and the air outlet 22 at the rear end is conducive to improving the dust removal efficiency. It should be noted that the front is the direction of tunnel excavation, and the rear is the direction of the tunnel entrance.

[0033] Furthermore, the air inlet 21 is connected to a plurality of air inlet ducts 7. Providing a plurality of air inlet ducts 7 is beneficial to increasing the air inlet area or expanding the coverage area, and is beneficial to improving the dust removal efficiency.

[0034] Embodiment 2

[0035] Figure 4 Another embodiment of the trestle that can be used for tunnel dust removal of the present invention is shown. The trestle that can be used for tunnel dust removal of this embodiment is basically the same as the first embodiment, except that: the trestle body 1 includes two rows of main beams 11 and a cross beam 12 arranged between the two rows of main beams 11, the dust removal area 23 is arranged below the cross beam 12, and the clean area 24 is arranged in the cavity of the main beam 11, which can make full use of the space below the cross beam 12 and inside the main beam 11, and will not affect the passage of vehicles and other equipment over the cross beam 12. The backflush component 4 is located in the cavity of any one row of main beams 11, and the cavity of the other row of main beams 11 serves as an escape passage, with a compact and reasonable structure. Of course, in other embodiments, the dust removal area 23 can also be arranged inside the main beam 11, and the clean area 24 can be arranged below the cross beam 12, see Figure 4 , that is, the positions of the dust removal area 23 and the clean area 24 are swapped.

[0036] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A trestle bridge that can be used for tunnel dust removal, comprising a trestle bridge body (1), characterized in that: It also comprises a dust removal fan (6); a dust removal chamber (2) is provided on the trestle body (1); an air inlet (21) and an air outlet (22) are provided on the dust removal chamber (2) and an air filter (3) is provided inside the chamber; the air filter (3) is located between the air inlet (21) and the air outlet (22); the dust removal chamber (2) comprises a dust removal area (23) and a clean area (24); the air inlet (21) is communicated with the dust removal area (23); the air filter (3) is arranged in the dust removal area (23) and the outlet is communicated with the clean area (24); the air outlet (22) is communicated with the clean area (24); a back-blowing component (4) for blowing away dust adsorbed by the air filter (3) is provided in the clean area (24); the air inlet (21) is connected to a plurality of air inlet ducts (7); the structure of the trestle body (1) is one of the following two types: The trestle bridge body (1) comprises two rows of main beams (11) and at least one row is a box-type structure, the dust removal area (23) is arranged between the two rows of main beams (11), and the clean area (24) is arranged inside the main beam (11) of the box-type structure; or, the dust removal area (23) is arranged inside the main beam (11) of the box-type structure, and the clean area (24) is arranged between the two rows of main beams (11); The trestle bridge body (1) comprises two rows of main beams (11) and a cross beam (12) arranged between the two rows of main beams (11), at least one row of main beams (11) is a box-type structure, the dust removal area (23) is arranged below the cross beam (12), and the clean area (24) is arranged inside the main beam (11) of the box-type structure; or, the dust removal area (23) is arranged inside the main beam (11) of the box-type structure, and the clean area (24) is arranged below the cross beam (12).

2. The trestle bridge that can be used for tunnel dust removal according to claim 1 is characterized in that: A conical dust collecting component (5) is provided at the bottom of the dust removal area (23); the dust collecting component (5) is detachably connected to the dust removal chamber (2).

3. The trestle bridge for tunnel dust removal according to claim 1 is characterized in that: Both rows of main beams (11) are box-type structures, and an escape passage is formed inside one row of the main beams (11).

4. The trestle bridge for tunnel dust removal according to any one of claims 1 to 3, characterized in that: The dust removal fan (6) comprises an air inlet fan (61) arranged at the air inlet (21) and an air outlet fan (62) arranged at the air outlet (22).

5. The trestle bridge for tunnel dust removal according to any one of claims 1 to 3, characterized in that: The air inlet (21) is located at the front end of the trestle body (1), and the air outlet (22) is located at the rear end of the trestle body (1).

6. The trestle bridge for tunnel dust removal according to any one of claims 1 to 3, characterized in that: The air filter (3) is a cylindrical structure.

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