A trestle with dust isolation function

Abstract

The present invention discloses a trestle with dust isolation function, comprising a trestle body, a bracket and a dust isolation curtain for separating the front and rear ends of the trestle body, wherein the bracket is arranged on the trestle body and has a passage inside, and the dust isolation curtain is arranged on the bracket. The present invention provides a bracket on the trestle body, and has a passage inside, so that transport vehicles and other construction equipment can pass through the trestle normally. The bracket is provided with a dust isolation curtain arranged along the cross section of the tunnel, so as to prevent a large amount of dust generated at the front end of the trestle from being transferred to the rear end of the trestle, which is conducive to maintaining a low dust content in the air at the rear end of the trestle.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction equipment, and in particular to a trestle with a dust isolation function. 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 with a dust-proof function which has a simple structure, low cost and is easy to use.

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

[0006] A trestle with dust isolation function comprises a trestle body, a bracket and a dust isolation curtain for separating the front and rear ends of the trestle body. The bracket is arranged on the trestle body and has a passage inside. The dust isolation curtain is arranged on the bracket.

[0007] As a further improvement of the above technical solution: a plurality of nozzles are provided on the bracket, and the dust-proof curtain is an air curtain formed by the gas ejected from the nozzles.

[0008] As a further improvement of the above technical solution: the dust-proof curtain is a flexible curtain, and the bracket is provided with a flexible curtain winding mechanism or a flexible curtain folding mechanism.

[0009] As a further improvement of the above technical solution: it also includes a dust removal fan, a dust removal chamber is provided on the pier body, the dust removal chamber is provided with an air inlet and an air outlet and an air filter is provided inside, the air filter is located between the air inlet and the air outlet, the air inlet is provided on the front side of the dust curtain, and the air outlet is provided on the rear side of the dust curtain.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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, 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.

[0014] 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.

[0015] 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.

[0016] Compared with the prior art, the advantages of the present invention are: the trestle with dust isolation function disclosed by the present invention is provided with a bracket on the trestle body, and a passage is left inside the bracket to facilitate the normal passage of transport vehicles and other construction equipment through the trestle; the bracket is provided with a dust isolation curtain for separating the front and rear ends of the trestle body to prevent a large amount of dust generated at the front end of the trestle from being transferred to the rear end of the trestle, which is conducive to maintaining a low dust content in the air at the rear end of the trestle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the main structure of a trestle bridge embodiment 1 with dust isolation function of the present invention.

[0018] Figure 2 It is a schematic diagram of the top view of the structure of the trestle with dust isolation function of the present invention.

[0019] Figure 3 It is a side structural schematic diagram of a first embodiment of a trestle with dust isolation function of the present invention.

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

[0021] Figure 5 It is a side structural schematic diagram of a second embodiment of a trestle with dust isolation function of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the second arrangement of the dust removal chamber in the present invention.

[0023] The numbers in the figure represent: 1. trestle body; 11. main beam; 12. cross beam; 13. passage; 14. flexible curtain winding mechanism; 15. nozzle; 16. bracket; 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; 8. dust screen. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Embodiment 1

[0026] Figures 1 to 4 An embodiment of a trestle with a dust-proof function of the present invention is shown. The trestle with a dust-proof function of this embodiment includes a trestle body 1, a bracket 16, and a dust-proof curtain 8 for separating the front and rear ends of the trestle body 1. In this embodiment, the dust-proof curtain 8 is arranged along the cross section of the tunnel, the bracket 16 is arranged on the trestle body 1 and has a channel 13 inside, and the dust-proof curtain 8 is arranged on the bracket 16. Of course, in other embodiments, the dust-proof curtain 8 can also have other arrangements, which can prevent a large amount of dust generated at the front end of the trestle from being transferred to the rear end of the trestle.

[0027] The trestle with dust isolation function is provided with a bracket 16 on the trestle body 1, and a channel 13 is left inside the bracket 16 to facilitate the normal passage of transport vehicles and other construction equipment through the trestle. The bracket 16 is provided with a dust isolation curtain 8 arranged along the cross section of the tunnel to prevent a large amount of dust generated at the front end of the trestle from being transferred to the rear end of the trestle, which is conducive to keeping the air at the rear end of the trestle with low dust. Among them, the bracket 16 can be, for example, a door-shaped bracket or an arched bracket adapted to the cross section of the tunnel, etc., with good structural stability and a large width of the internal channel 13. It should be noted that the front is the direction of tunnel excavation, and the rear is the direction of the tunnel entrance.

[0028] Furthermore, in this embodiment, the dust-proof curtain 8 is a flexible curtain, such as a cloth curtain with air filtering function or a curtain body of other materials. When a transport vehicle or other construction equipment needs to pass through the trestle, the flexible curtain can be stored. The bracket 16 is provided with a flexible curtain winding mechanism 14, which can store the flexible curtain on the side of the bracket 16 (such as the upper side, left side or right side, etc.) to facilitate the smooth passage of the transport vehicle or other construction equipment. Of course, in other embodiments, a flexible curtain folding mechanism can also be used to store the dust-proof curtain 8 on one side of the bracket 16. For details, please refer to various folding and storing mechanisms of curtains.

[0029] Furthermore, in the present embodiment, the pier with dust isolation function also includes a dust removal fan 6, a dust removal chamber 2 is provided on the pier 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 air filter 3 is located between the air inlet 21 and the air outlet 22, the air inlet 21 is provided on the front side of the dust isolation curtain 8, and the air outlet 22 is provided on the rear side of the dust isolation curtain 8.

[0030] 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 at the front end of 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 to the rear end of the tunnel, 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. Generally speaking, the amount of dust generated by blasting and excavation in front of the tunnel is relatively large. Setting the air inlet 21 at the front end and the air outlet 22 at the rear end is beneficial to improving the dust removal efficiency.

[0031] 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.

[0032] 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.

[0033] 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 4 , that is, the positions of the dust removal area 23 and the clean area 24 are swapped. Furthermore, 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, a detachable connection is achieved 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 chamber 2. The structure is simple and reliable, and it is convenient to collect dust for subsequent centralized treatment.

[0034] In this 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. Of course, in other embodiments, the dust removal fan 6 can also be arranged only at the air outlet 22, and 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 pipeline. This solution can also realize that the air in the tunnel enters the dust removal chamber 2.

[0035] In this embodiment, 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.

[0036] Embodiment 2

[0037] Figure 5 Another embodiment of the trestle with dust isolation function of the present invention is shown. The trestle with dust isolation function of this embodiment is basically the same as the embodiment 1, except that: in this embodiment, a plurality of nozzles 15 are provided on the bracket 16, and the dust isolation curtain 8 is an air curtain composed of the gas ejected from the nozzle 15. The air curtain formed by the nozzle 15 can also prevent a large amount of dust generated at the front end of the trestle from being transferred to the rear end of the trestle, which is conducive to keeping the air at the rear end of the trestle with low dust. At the same time, when transport vehicles or other construction equipment need to pass through the trestle, the air curtain does not need to be stored and there will be no obstacles. Compared with the physical curtain of the embodiment 1, the air curtain is more convenient to use.

[0038] Embodiment 3

[0039] Figure 6 Another embodiment of the trestle with dust isolation function of the present invention is shown. The trestle with dust isolation function of this embodiment is basically the same as the first embodiment and the second embodiment, except that:

[0040] The trestle body 1 includes two rows of main beams 11 and a cross beam 12 disposed between the two rows of main beams 11. The dust removal area 23 is disposed below the cross beam 12, and the clean area 24 is disposed in the cavity of the main beam 11. The space below the cross beam 12 and inside the main beam 11 can be fully utilized, and the vehicles and other equipment will not be affected from passing through the cross beam 12. The backflush component 4 is located in the cavity of any row of main beams 11, and the cavity of the other row of main beams 11 is used as an escape passage. The structure is compact and reasonable. Of course, in other embodiments, the dust removal area 23 can also be disposed inside the main beam 11, and the clean area 24 can be disposed below the cross beam 12. See Figure 6 , that is, the positions of the dust removal area 23 and the clean area 24 are swapped.

[0041] 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 pier with dust isolation function, comprising a pier body (1), characterized in that: It also includes a bracket (16) and a dust-proof curtain (8) for separating the front and rear ends of the trestle body (1); the bracket (16) is arranged on the trestle body (1) and has a channel (13) inside; the dust-proof curtain (8) is arranged on the bracket (16); and it also includes a dust-removing fan (6); the trestle body (1) is provided with a dust-removing chamber (2); the dust-removing chamber (2) is provided with an air inlet (21) and an air outlet (22) and has an air filter (3) inside; the air filter (3) is located between the air inlet (21) and the air outlet (22); the air inlet (21) and the air outlet (22) are provided with an air filter (3) inside. The air inlet (21) is arranged at the front side of the dust-proof curtain (8), and the air outlet (22) is located at the rear side of the dust-proof curtain (8); 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); 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) both of which are box-type structures, wherein one row of the main beams (11) has an interior forming an escape passage, and the other row of the main beams (11) has a clean area (24) arranged therein, and the dust removal area (23) is arranged between the two rows of main beams (11); or, the other row of the main beams (11) has a dust removal area (23), and the clean area (24) is arranged between the two rows of main beams (11); The trestle bridge body (1) comprises main beams (11) of a box-type structure and cross beams (12) arranged between two rows of main beams (11), wherein one row of the main beams (11) has an interior forming an escape passage, the other row of the main beams (11) has a clean area (24) arranged therein, and the dust removal area (23) is arranged below the cross beam (12); or, the other row of the main beams (11) has a dust removal area (23) arranged therein, and the clean area (24) is arranged below the cross beam (12).

2. The trestle with dust isolation function according to claim 1, characterized in that: The bracket (16) is provided with a plurality of nozzles (15), and the dust-proof curtain (8) is an air curtain formed by the gas ejected from the nozzles (15).

3. The trestle with dust isolation function according to claim 1, characterized in that: The dust-proof curtain (8) is a flexible curtain, and the bracket (16) is provided with a flexible curtain winding mechanism (14) or a flexible curtain folding mechanism.

4. The trestle with dust isolation function according to claim 1, characterized in that: A back-blowing component (4) for blowing away dust adsorbed by the air filter (3) is provided in the clean area (24), and 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).

5. The trestle with dust isolation function according to any one of claims 1 to 4, 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).

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