Dust removal device of hob type rock tunneling machine

Abstract

The utility model discloses a dust removal device of a hob type rock tunneling machine in the technical field of hob type rock tunneling machines, which comprises a tunneling big arm and a tunneling cutterhead mounted at one end of the tunneling big arm, and further comprises a first spraying part, a second spraying part and a dust falling medium conveying part, the first spraying part is positioned above and on the side of the tunneling cutterhead, and the second spraying part is positioned above and on the side of the tunneling cutterhead; a dust falling medium is sprayed to the upper portion and the side portion of the tunneling cutter head to conduct adsorption and dust falling on escaping dust; the second spraying part is arranged on the bottom surface of the tunneling cutterhead and sprays the dust falling medium from the bottom of the tunneling cutterhead to adsorb and fall the escaping dust; the first spraying part and the second spraying part are used for spraying dust falling media from the lower portion, the upper portion and the side portion of the tunneling cutterhead to achieve comprehensive covering of the tunneling cutterhead, dust generated by the tunneling cutterhead in the tunneling process is comprehensively adsorbed and subjected to dust falling, and the dust content in the working environment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roller cutter type rock boring machines, in particular to a dust removal device for roller cutter type rock boring machines. Background Art

[0002] Bolter miners are essential equipment for tunneling coal mines. However, when faced with hard rock, bolter miners are unable to operate, and full-face hard rock tunnel boring machines (TBMs) are usually the only option. While TBMs can handle hard rock, they are much larger than bolter miners. Furthermore, since coal mine tunnels are generally rectangular, the circular face needs to be trimmed to a rectangular shape after the TBM completes excavation. A roller cutter tunnel boring machine can overcome these shortcomings. For example, Chinese invention patent publication number CN116677400A discloses a roller cutter hard rock tunnel boring machine whose cutterhead can move up, down, left, and right to cut hard rock without the need for reshaping.

[0003] Like conventional tunnel boring machines, roller cutters generate significant amounts of coal and rock dust during the hard rock cutting process. However, the cutting mechanism of a roller cutter is larger than that of a fully-mechanized tunnel boring machine (TMM) or bolter miner, resulting in greater dust generation than conventional coal and rock cutting equipment. Conventional TBMs operate in an enclosed excavation area, while roller cutters operate in an open space, resulting in greater dust emissions. Furthermore, due to the limited moving parts of the cutting mechanism, conventional fully-mechanized tunnel boring machines, such as drum bolter miners, typically have dust removal sprayers located only on the left and right sides of the boom and on top. This makes it difficult to fully encompass the cutting mechanism, hindering the desired dust reduction effect.

[0004] Based on this, the utility model designs a dust removal device for a roller cutter type rock tunnel boring machine to solve the above problems. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dust removal device for a roller cutter rock tunnel boring machine, comprising a tunneling arm and a tunneling cutter disc installed at one end of the tunneling arm, and also comprising a first spraying part, a second spraying part and a dust reduction medium conveying part. The first spraying part is installed on the tunneling arm, and sprays dust reduction medium above and to the side of the tunneling cutter disc to absorb and reduce the scattered dust; the second spraying part is arranged on the bottom surface of the tunneling cutter disc, and sprays dust reduction medium from the bottom of the tunneling cutter disc to absorb and reduce the scattered dust; the dust reduction medium conveying part is used to convey dust reduction medium to the first spraying part and the second spraying part.

[0006] As a further solution of the present invention, the second spraying part is disc-shaped and fixed to the bottom surface of the tunneling cutter disc. A plurality of nozzles are circumferentially arranged on the side of the second spraying part. The nozzles installed on the second spraying part are radially arranged, so that the dust reduction coverage range of the second spraying part when working is fan-shaped, fully covering the tunneling cutter disc from the bottom of the tunneling cutter disc.

[0007] As a further solution of the present invention, the second spraying portion is coaxially arranged with the excavation cutter disc.

[0008] As a further solution of the present invention, the first spraying part includes a first tube body, two second tube bodies and two third tube bodies installed at different positions of the excavation arm. The first tube body, the second tube body and the third tube body are all equipped with nozzles to spray dust reduction media from different positions and directions to cover the top of the excavation cutter disc.

[0009] As a further solution of the present invention, the first tube body is fixed to the end of the tunneling arm on which the tunneling cutter disc is installed. The first tube body is arc-shaped and is coaxially arranged with the tunneling cutter disc, and the several nozzles on the first tube body are arranged circumferentially along the side of the first tube body, so that the dust reduction medium sprayed by the nozzles on the first tube body is fan-shaped.

[0010] As a further solution of the present invention, the two second tube bodies are respectively fixed on both sides of one end of the tunneling arm where the tunneling cutter disc is installed, and the axial direction of the second tube body is the same as the length direction of the tunneling arm. Dust reduction medium is sprayed from the top of the tunneling cutter disc to both sides of the tunneling cutter disc through a number of nozzles arranged along the axial direction of the second tube body on the second tube body.

[0011] As a further solution of the present invention, the two third tube bodies are respectively fixed on both sides of the excavation arm near the excavation cutter disc, the axial direction of the third tube body is the same as the axial direction of the excavation cutter disc, and the dust reduction medium is sprayed from the rear end of the excavation cutter disc to both sides of the excavation cutter disc through a number of nozzles arranged along the axial direction of the third tube body.

[0012] As a further solution of the present invention, the dust reduction medium conveying part includes a storage box and a conveying device, and the dust reduction medium in the storage box is conveyed to the first spraying part and the second spraying part by the conveying device.

[0013] As a further solution of the present invention, the dust reduction medium is water, and the nozzle is an atomizing nozzle.

[0014] As a further solution of the present invention, the dust reduction medium is foam, and the nozzle is a foam nozzle.

[0015] The utility model has the following beneficial effects:

[0016] This device sprays dust reduction medium from above the tunneling cutterhead through the first tube body and the second tube body, sprays dust reduction medium on both sides of the tunneling cutterhead through the third tube body box, and finally sprays dust reduction medium from below the tunneling cutterhead through the second spraying part. At the same time, the first tube body and the second spraying part both spray dust reduction medium in a fan shape, which can perfectly adapt to the shape of the tunneling cutterhead. The first tube body, the second tube body, the third tube body and the second spraying part are designed according to the characteristics of the roller cutter rock tunneling machine to achieve all-round coverage of the tunneling cutterhead, enhance the dust reduction effect and improve the working environment.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a side view schematic diagram of the overall structure of the utility model.

[0020] Figure 2 Schematic diagram of the spraying range of the third tube 14 and the second spraying portion 111 in the present invention.

[0021] Legend:

[0022] 1. Excavation boom; 11. Excavation cutterhead; 111. Second spraying unit; 12. First pipe body; 13. Second pipe body; 14. Third pipe body. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0024] See also Figure 1-2The utility model provides a technical solution: a dust removal device for a roller cutter rock boring machine, comprising a tunneling boom 1 and a tunneling cutter disc 11 installed at one end of the tunneling boom 1, and further comprising a first spraying part, a second spraying part 111 and a dust reduction medium conveying part. The first spraying part is installed on the tunneling boom 1, and sprays the dust reduction medium above and to the side of the tunneling cutter disc 11 to absorb and reduce the scattered dust; the second spraying part 111 is arranged on the bottom surface of the tunneling cutter disc 11, and sprays the dust reduction medium from the bottom of the tunneling cutter disc 11 to absorb and reduce the scattered dust. Dust; The dust reduction medium conveying part is used to convey the dust reduction medium to the first spraying part and the second spraying part 111, and the dust reduction medium is sprayed from the bottom, top and side of the tunneling cutter head 11 by the first spraying part and the second spraying part 111 to achieve full coverage of the tunneling cutter head 11, and the dust generated by the tunneling cutter head 11 during the tunneling process is fully adsorbed and dusted, effectively reducing the dust content in the working environment. At the same time, a second spraying part 111 is provided at the bottom of the tunneling cutter head 11, which can effectively block the dust escaping from the tunneling face along the bottom of the tunneling boom 1 to the working area.

[0025] Specifically, the second spraying portion 111 is disc-shaped and fixed to the bottom surface of the excavation cutter head 11. A plurality of nozzles are arranged circumferentially on the side of the second spraying portion 111. The nozzles installed on the second spraying portion 111 are arranged radially, so that the dust reduction coverage range of the second spraying portion 111 when working is fan-shaped, and the excavation cutter head 11 is fully covered from the bottom of the excavation cutter head 11. Since the excavation cutter head 11 of the roller cutter rock tunnel boring machine is disc-shaped, the second spraying portion 111 is set to be disc-shaped, and a plurality of nozzles are installed on the side of the second spraying portion 111 along the circumferential direction of the second spraying portion 111. At the same time, the second The direction of the nozzle on the spraying part 111 is the same as the radial direction of the second spraying part 111, that is, when the second spraying part 111 is performing dust reduction operation, the dust reduction medium is sprayed from the nozzle on the second spraying part 111, and the overall coverage range is fan-shaped, and the span of the fan is greater than 180°, thereby achieving full coverage of the bottom of the excavation cutter head 11. If the dust generated by the excavation cutter head 11 during the excavation operation escapes downward, it will definitely come into contact with the dust reduction medium sprayed from the nozzle on the second spraying part 111, so that the dust emitted downward by the excavation cutter head 11 during the excavation operation can be well suppressed.

[0026] Furthermore, the second spraying portion 111 is coaxially arranged with the excavation cutter disc 11 , so that the second spraying portion 111 can evenly spray the dust reduction medium to the bottom of the excavation cutter disc 11 through the nozzles on its side.

[0027] In this embodiment, the first spraying part includes a first tube body 12, two second tube bodies 13 and two third tube bodies 14 installed at different positions of the tunneling boom 1. Nozzles are installed on the first tube body 12, the second tube body 13 and the third tube body 14. Dust reduction medium is sprayed from different positions and directions to cover the top of the tunneling cutter disc 11. The dust reduction medium is sprayed through the nozzles on the first tube body 12, the second tube body 13 and the third tube body 14 to fully cover the top and sides of the tunneling cutter disc 11. In cooperation with the first spraying part, the dust reduction medium is sprayed from the bottom of the tunneling cutter disc 11 to achieve all-round coverage of the tunneling cutter disc 11 without dead angles.

[0028] like Figure 1-2 As shown, the first tube body 12 is fixed to the end of the tunneling arm 1 on which the tunneling cutter disc 11 is installed. The first tube body 12 is arc-shaped and is coaxially arranged with the tunneling cutter disc 11, and the plurality of nozzles on the first tube body 12 are arranged circumferentially along the side of the first tube body 12, so that the dust reduction medium sprayed by the nozzles on the first tube body 12 is fan-shaped. The two second tube bodies 13 are respectively fixed on both sides of one end of the tunneling arm 1 on which the tunneling cutter disc 11 is installed, and the axial direction of the second tube body 13 is the same as the length direction of the tunneling arm 1. Several nozzles arranged along the axial direction of the second tube body 13 on the second tube body 13 spray dust reduction medium from the top of the tunneling cutter disc 11 to both sides of the tunneling cutter disc 11. The two third tube bodies 14 are respectively fixed on both sides of the tunneling arm 1 close to the tunneling cutter disc 11. The axial direction of the third tube body 14 is the same as the axial direction of the tunneling cutter disc 11. The dust reduction medium is sprayed from the rear end of the tunneling cutter disc 11 to both sides of the tunneling cutter disc 11 through several nozzles arranged along the axial direction of the third tube body 14 on the third tube body 14.

[0029] In this embodiment, a fan-shaped dust reduction medium is sprayed above the excavation cutter disc 11 by the nozzle on the side of the first tube body 12, and the front end of the excavation cutter disc 11 is fully covered. The dust reduction medium is sprayed from the top of the excavation cutter disc 11 to both sides of the excavation cutter disc 11 by the nozzle installed on the second tube body 13, and the side of the excavation cutter disc 11 is fully covered. At the same time, the fan-shaped range formed by the dust reduction medium sprayed by the nozzle on the first tube body 12 is connected to the rectangular range formed by the dust reduction medium sprayed by the nozzle on the second tube body 13, forming a U-shape as a whole. Achieve full coverage of the top of the tunneling cutterhead 11, and finally cooperate with the third tube body 14 to spray the dust reduction medium from the rear end of the tunneling cutterhead 11 to the side of the tunneling cutterhead 11, so as to achieve full coverage of the tunneling cutterhead 11 without dead angles by the dust reduction medium. During the tunneling operation of the tunneling cutterhead 11, the dust generated will be intercepted by the dust reduction medium regardless of whether it escapes upward, downward or toward the tunneling arm 1 to the working area. When the dust contacts the dust reduction medium, it will be adsorbed by it and then fall, achieving the effect of all-round dust suppression and improving the working environment of the staff.

[0030] like Figure 1-2As shown, the dust reduction medium conveying part includes a storage box 2 and a conveying device 3. The dust reduction medium in the storage box 2 is conveyed to the first spraying part and the second spraying part 111 through the conveying device 3. The storage box 2 and the conveying device 3 can be fixed on the excavation boom 1, and then the conveying device 3 is connected to the first pipe body 12, the second pipe body 13, the third pipe body 14 and the second spraying part 111 through the pipeline to realize the conveying of the dust reduction medium.

[0031] In this embodiment, the dust reduction medium is water, and the nozzle is an atomizing nozzle. The water is atomized by the atomizing nozzle and then sprayed out. The water mist comes into contact with the dust and absorbs the dust to achieve the dust reduction effect.

[0032] In this embodiment, the dust reduction medium is foam, and the nozzle is a foam nozzle. The foam mixture is transported to the foam nozzle through the conveying device 3. After the air is sucked in by the foam nozzle, air foam is formed and sprayed out. The water consumption of foam dust removal can be reduced by 30%-80%, which can avoid the sinking of the comprehensive tunneling machine caused by excessive water consumption; and its dust suppression efficiency is 3-5 times higher than that of spraying water, which can improve the vision of the tunneling driver and reduce safety hazards.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dust removal device for a roller cutter type rock boring machine, comprising a boring boom (1) and a boring cutter disc (11) mounted on one end of the boring boom (1), characterized in that: Also includes: A first spraying unit is installed on the excavation arm (1) and sprays a dust reduction medium above and to the side of the excavation cutter head (11) to absorb and reduce the scattered dust; A second spraying portion (111) is provided on the bottom surface of the excavation cutter disc (11) and sprays a dust reduction medium from the bottom of the excavation cutter disc (11) to absorb and reduce the scattered dust; The dust reduction medium conveying part is used for conveying the dust reduction medium to the first spraying part and the second spraying part (111).

2. A dust removal device for a roller cutter type rock boring machine according to claim 1, characterized in that: The second spraying portion (111) is disc-shaped and fixed to the bottom surface of the tunneling cutter disc (11). A plurality of nozzles are circumferentially arranged on the side of the second spraying portion (111). The nozzles installed on the second spraying portion (111) are radially arranged, so that the dust reduction coverage range of the second spraying portion (111) when working is fan-shaped, and the tunneling cutter disc (11) is fully covered from the bottom.

3. The dust removal device for a roller cutter type rock boring machine according to claim 2, characterized in that: The second spraying portion (111) is coaxially arranged with the excavation cutterhead (11).

4. The dust removal device for a roller cutter type rock boring machine according to claim 1, characterized in that: The first spraying part comprises a first tube body (12), two second tube bodies (13) and two third tube bodies (14) installed on the excavation arm (1); the first tube body (12), the second tube body (13) and the third tube body (14) are all equipped with nozzles, which spray dust reduction media from different positions and directions to cover the top of the excavation cutter head (11).

5. The dust removal device for a roller cutter type rock boring machine according to claim 4, characterized in that: The first tube body (12) is fixed to the end of the tunneling arm (1) on which the tunneling cutter disc (11) is installed. The first tube body (12) is arc-shaped and is coaxially arranged with the tunneling cutter disc (11). The plurality of nozzles on the first tube body (12) are arranged circumferentially along the side of the first tube body (12), so that the dust reduction medium sprayed by the nozzles on the first tube body (12) is fan-shaped.

6. The dust removal device for a roller cutter type rock boring machine according to claim 4, characterized in that: The two second tube bodies (13) are respectively fixed on both sides of one end of the tunneling arm (1) where the tunneling cutter disc (11) is installed, and the axial direction of the second tube body (13) is the same as the length direction of the tunneling arm (1). Dust reduction medium is sprayed from above the tunneling cutter disc (11) to both sides of the tunneling cutter disc (11) through a plurality of nozzles arranged along the axial direction of the second tube body (13) on the second tube body (13).

7. The dust removal device for a roller cutter type rock boring machine according to claim 4, characterized in that: The two third tube bodies (14) are respectively fixed on both sides of the tunneling arm (1) near the tunneling cutter disc (11); the axial direction of the third tube body (14) is the same as the axial direction of the tunneling cutter disc (11); and the dust reduction medium is sprayed from the rear end of the tunneling cutter disc (11) to both sides of the tunneling cutter disc (11) through a plurality of nozzles arranged along the axial direction of the third tube body (14).

8. The dust removal device for a roller cutter type rock boring machine according to claim 1, characterized in that: The dust reduction medium conveying section comprises a storage box (2) and a conveying device (3), and the dust reduction medium in the storage box (2) is conveyed to the first spraying section and the second spraying section (111) by the conveying device (3).

9. The dust removal device for a roller cutter type rock boring machine according to claim 2, characterized in that: The dust reduction medium is water, and the nozzle is an atomizing nozzle.

10. The dust removal device for a roller cutter rock boring machine according to claim 2, characterized in that: The dust reduction medium is foam, and the nozzle is a foam nozzle.

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