A dust-covering device for tunnel dust removal vehicles

Abstract

This application provides a dust-covering device for a tunnel dust removal vehicle, comprising an upper dust-covering mechanism and two side dust-covering mechanisms. The upper dust-covering mechanism is rotatably mounted on the top rear of the tunnel dust removal vehicle and is deployable or retractable above the air inlet of the vehicle, used to draw dust from around the vehicle into the air inlet. The two side dust-covering mechanisms are respectively mounted on opposite side walls of the rear of the vehicle and are deployable or retractable on the sides of the air inlet, used to draw dust from around the vehicle into the air inlet. This device helps the tunnel dust removal vehicle gather dust-laden air, increasing its dust-collecting range and thus improving its performance.

Description

Technical Field

[0001] This application relates to the field of tunnel construction, and more particularly to a dust-covering device for a tunnel dust removal vehicle. Background Technology

[0002] During tunnel construction using the drill-and-blast method, processes such as blasting at the tunnel face and shotcreting operations generate large amounts of dust, smoke, and other harmful gases. Current domestic tunnel dust control technologies typically employ mechanical ventilation, water spraying, and tunnel dust suppression vehicles to manage the tunnel environment. However, as tunnel depth increases, the efficiency of ordinary ventilation and dust removal decreases, while water spraying can easily make the tunnel damp, increasing the risk of mudslides and water inrushes.

[0003] To address tunnel air quality issues, various new types of tunnel dust removal vehicles have emerged. Among them, dry tunnel dust removal vehicles use sintered plastic sheets as filter material. A fan draws polluted air into the rear intake, where dust particles are filtered out by the plastic sheet, and clean air is expelled from the front exhaust vent. While dry tunnel dust removal vehicles can reduce dust concentration in tunnels to some extent, in actual use, because the tunnel's cross-sectional area is much larger than the vehicle's intake area, the clean air passing through the dust removal vehicle mixes with the polluted air that passes by, resulting in relatively polluted air remaining behind, leading to unsatisfactory dust removal results.

[0004] After each blast at the tunnel face, a large amount of dust accumulates. The tunnel dust removal vehicle needs to quickly absorb the dust-laden gas to improve visibility inside the tunnel and provide a good working environment for subsequent muck removal and other tasks. Therefore, the operating time for the tunnel dust removal vehicle is short, with no extra time available. Summary of the Invention

[0005] One of the purposes of this application is to provide a dust-covering device for tunnel dust removal vehicles to solve the problem of poor performance of existing tunnel dust removal vehicles.

[0006] The technical solution of this application is:

[0007] A dust-covering device for a tunnel dust removal vehicle includes an upper dust-covering mechanism and two side dust-covering mechanisms. The upper dust-covering mechanism is rotatably installed at the rear of the top surface of the tunnel dust removal vehicle and is deployable or retractable at the upper part of the air inlet of the tunnel dust removal vehicle, for drawing dust from the surrounding area of ​​the tunnel dust removal vehicle into the air inlet. The two side dust-covering mechanisms are respectively installed on opposite side walls of the rear of the tunnel dust removal vehicle and are deployable or retractable at the sides of the air inlet, for drawing dust from the surrounding area of ​​the tunnel dust removal vehicle into the air inlet.

[0008] As one technical solution of this application, the upper dust-shielding mechanism includes a flipping motor, a rotating plate, a U-shaped folding plate, a folding support, and a first foldable dust-shielding umbrella; the flipping motor is fixedly installed at the rear of the top surface of the tunnel dust removal vehicle; one end of the rotating plate is rotatably connected to the drive end of the flipping motor, and the other end is hinged to the U-shaped folding plate, so that the rotating plate is driven to rotate around the drive end by the flipping motor, and the U-shaped folding plate is flipped; the folding support is fixedly installed at the rear of the top surface of the tunnel dust removal vehicle; the U-shaped folding plate is hinged to the folding support and is located on top of the air inlet; the first foldable dust-shielding umbrella is installed in the inner cavity of the U-shaped folding plate, and can extend out of the opposite sides of the U-shaped folding plate or retract into the inner cavity, for sucking the dust around the tunnel dust removal vehicle into the air inlet.

[0009] As one technical solution of this application, the U-shaped folding plate includes a first side plate, a connecting plate, and a second side plate that are integrally formed and vertically connected in a U-shape; the first side plate has an elongated sliding opening that passes through the two opposite sides along its length; the other end of the rotating plate is hinged to the elongated sliding opening to drive the U-shaped folding plate to rotate; the connecting plate is hinged to the folding support.

[0010] As one technical solution of this application, the first foldable dust-shielding umbrella includes a first drive motor, a guide rail, a first unfolding plate, a second unfolding plate, a first gear, a second gear, a slider, a first folding umbrella, a second folding umbrella, and a first pull cord device; the guide rail is fixedly installed on the inner wall of the second side plate and is arranged along the length direction of the second side plate, and is located between the first side plate and the second side plate; the slider is slidably installed on the guide rail along the length direction of the guide rail and is located in the elongated sliding opening; the other end of the rotating plate is hinged to the slider; the first unfolding plate and the second unfolding plate are symmetrically arranged with respect to the guide rail and are located outside the opposite side walls of the guide rail; the first gear is integrally formed on one end of the first unfolding plate and is located between the first side plate and the second side plate, and close to the connecting plate; the second gear is integrally formed on the second unfolding plate... One end is located between the first side plate and the second side plate, and close to the connecting plate; the first gear meshes with the second gear; the first drive motor is fixedly installed on the outer wall of the second side plate, and the drive end passes through the second side plate and is connected to the first gear for transmission, for driving the first gear and the second gear to rotate, so that the first unfolding plate and the second unfolding plate move in a direction that is closer to or further away from each other; one side of the first folding umbrella is fixedly connected to one side wall of the guide rail, and the other side is connected to the inner side wall of the first unfolding plate in an unfoldable or retractable manner; one side of the second folding umbrella is fixedly connected to the other opposite side wall of the guide rail, and the other side is connected to the inner side wall of the second unfolding plate in an unfoldable or retractable manner; the first pull cord is disposed on the end of the guide rail away from the first gear, and both sides are respectively connected to the first folding umbrella and the second folding umbrella for transmission.

[0011] As one technical solution of this application, the first folding umbrella includes a first dust-proof canvas, a plurality of first metal frames, a plurality of first metal rings, and a first steel wire rope; the first dust-proof canvas is fan-shaped, and one side is fixedly connected to one side wall of the guide rail, while the other side is expandable or retractable and connected to the inner side wall of the first unfolding plate; the plurality of first metal frames are installed on the first dust-proof canvas at intervals along the diameter direction of the first dust-proof canvas; the first metal ring is fixedly installed on one end of the corresponding first metal frame; one end of the first steel wire rope is wound around one side end of the first puller, and the other end is sequentially connected to the plurality of first metal rings.

[0012] As one technical solution of this application, the second folding umbrella includes a second dust-proof canvas, a plurality of second metal frames, a plurality of second metal rings, and a second steel wire rope; the second dust-proof canvas is fan-shaped, and one side is fixedly connected to the opposite side wall of the guide rail, while the other side is expandable or retractable and connected to the inner side wall of the second unfolding plate; the plurality of second metal frames are installed on the second dust-proof canvas at intervals along the diameter direction of the second dust-proof canvas; the second metal rings are fixedly installed on one end of the corresponding second metal frame; one end of the second steel wire rope is wound around the other end of the first puller, and the other end is sequentially connected to the plurality of second metal rings.

[0013] As one technical solution of this application, the side dust-shielding mechanism includes a fixed plate, a second drive motor, a third unfolding plate, a second pull cord, and a second foldable dust-shielding umbrella; the fixed plate is fixedly installed on one side wall of the rear of the tunnel dust removal vehicle, and near the side of the air inlet; the second drive motor is installed at the top of one side wall of the rear of the tunnel dust removal vehicle; one end of the third unfolding plate is hinged to the drive end of the second drive motor, and the second drive motor is used to drive the unfolding plate to move towards or away from the fixed plate; the two sides of the second foldable dust-shielding umbrella are unfoldable or retractable and connected between the fixed plate and the third unfolding plate; the second pull cord is fixedly installed on the bottom end of the fixed plate and is drively connected to the second foldable dust-shielding umbrella.

[0014] As one technical solution of this application, the second foldable dust-proof umbrella includes a third dust-proof canvas, multiple third metal frames, multiple third metal rings, and a third steel wire rope; the third dust-proof canvas is fan-shaped, and one side is fixedly connected to one side wall of the fixed plate, while the other side is foldable or retractable and connected to the inner side wall of the third unfolding plate; multiple third metal frames are installed on the third dust-proof canvas at intervals along the diameter direction of the third dust-proof canvas; the third metal rings are fixedly installed on one end of the corresponding third metal frame; one end of the third steel wire rope is wound around the second puller, and the other end is sequentially connected to multiple third metal rings.

[0015] The beneficial effects of this application are:

[0016] The dust-covering device for tunnel dust removal vehicles disclosed in this application features high mobility, high dust removal efficiency, and convenience. It effectively addresses dust accumulation at tunnel faces and secondary lining trolleys, and during tunnel construction, it helps the dust removal vehicle gather dust-laden air, increasing its suction range and improving its performance. The dust-covering device is integrated into the main body of the tunnel dust removal vehicle, automatically opening when the vehicle is started for rapid dust suppression. It can be retracted at the end of the dust removal process to avoid interfering with the movement of subsequent tunnel construction vehicles. Specifically, the device adds dust-covering around the air inlet at the rear of the vehicle, significantly blocking dust-laden air from passing around the vehicle and increasing the intake of dust-laden gas, thus enhancing dust removal efficiency. Furthermore, the integrated dust-covering device at the rear of the vehicle allows for rapid deployment and retraction, and can be remotely controlled, reducing operation time, saving time and costs, and preventing personnel from being harmed by dust. Furthermore, the dust-shielding device uses nylon fabric, which is tough, lightweight, and resistant to damage from repeated bending. Additionally, a first metal frame is fixed to the first dust-shielding canvas, a second metal frame to the second dust-shielding canvas, and a third metal frame to the third dust-shielding canvas. This strengthens the axial load-bearing capacity of the device and prevents the edges of the first, second, and third dust-shielding canvases from being bent by axial airflow. Moreover, the first and second pullers can extend the first and second steel wire ropes under external force, and both ropes automatically retract when no external force is applied. The first puller also secures the first metal frame, ensuring the first dust-shielding canvas folds orderly during retraction, and the second puller secures the second metal frame, ensuring the second dust-shielding canvas folds orderly during retraction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the dust-covering device for a tunnel dust removal vehicle provided in this application embodiment when it is in a folded state;

[0019] Figure 2 A schematic diagram of the dust-covering device for a tunnel dust removal vehicle provided in this application embodiment when it is in a folded state at a first angle;

[0020] Figure 3This is a second-angle schematic diagram of the dust-covering device for a tunnel dust removal vehicle provided in this application embodiment when it is in a folded state;

[0021] Figure 4 A third-angle schematic diagram of the dust-covering device for a tunnel dust removal vehicle provided in this application embodiment when it is in a folded state;

[0022] Figure 5 This is a fourth-angle schematic diagram of the dust-covering device for a tunnel dust removal vehicle provided in the embodiments of this application when it is in a folded state;

[0023] Figure 6 A schematic diagram of the dust-covering device for a tunnel dust removal vehicle provided in this application embodiment when it is in the extended state;

[0024] Figure 7 A schematic diagram of the first angle of the dust-covering device for a tunnel dust removal vehicle provided in the embodiments of this application when it is in the extended state;

[0025] Figure 8 This is a schematic diagram of the side dust-shielding mechanism provided in the embodiments of this application when it is in the extended state.

[0026] Icons: 1-Tunnel dust removal vehicle; 2-Upper dust-covering mechanism; 3-Side dust-covering mechanism; 4-Air inlet; 5-Tilting motor; 6-Rotating plate; 7-U-shaped folding plate; 8-Folding support; 9-First side plate; 10-Connecting plate; 11-Second side plate; 12-Long strip sliding opening; 13-First drive motor; 14-Guide rail; 15-First unfolding plate; 16-Second unfolding plate; 17-First gear; 18-Second gear; 19-Slider; 20-First folding umbrella; 21-The Two-fold umbrella; 22-First puller; 23-First dust-proof canvas; 24-First metal frame; 25-First metal ring; 26-First steel wire rope; 27-Second dust-proof canvas; 28-Second metal frame; 29-Second metal ring; 30-Second steel wire rope; 31-Fixing plate; 32-Second drive motor; 33-Third unfolding plate; 34-Second puller; 35-Third dust-proof canvas; 36-Third metal frame; 37-Third metal ring; 38-Third steel wire rope. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only used to facilitate the description of this application and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] Example:

[0035] Please refer to Figure 1 (Refer to) Figures 2 to 8 This application provides a dust-covering device for a tunnel dust removal vehicle 1, including an upper dust-covering mechanism 2 and two side dust-covering mechanisms 3; wherein, the upper dust-covering mechanism 2 is rotatably installed at the rear of the top surface of the tunnel dust removal vehicle 1, and is deployed or retractable at the upper part of the air inlet 4 of the tunnel dust removal vehicle 1, for sucking dust from all around the tunnel dust removal vehicle 1 into the air inlet 4; at the same time, the two side dust-covering mechanisms 3 are respectively installed on opposite side walls at the rear of the tunnel dust removal vehicle 1, and are both deployed or retractable at the side of the air inlet 4, for sucking dust from all around the tunnel dust removal vehicle 1 into the air inlet 4.

[0036] It should be noted that the tunnel dust removal vehicle 1 adopts the existing dry dust removal vehicle technology. Under the blowing of the axial flow fan, the dust-laden air enters from the rear air inlet 4, passes through the polymer filter plate to remove dust particles, and is blown out from the front of the vehicle with clean air.

[0037] Furthermore, the upper dust-shielding mechanism 2 includes a flipping motor 5, a rotating plate 6, a U-shaped folding plate 7, a folding support 8, and a first foldable dust-shielding umbrella; wherein, the flipping motor 5 is fixedly installed at the rear of the top surface of the tunnel dust removal vehicle 1; one end of the rotating plate 6 is hinged to the drive end of the flipping motor 5, and the other end is hinged to the U-shaped folding plate 7. When the flipping motor 5 is started, the rotating plate 6 can be driven to rotate around the drive end of the flipping motor 5, so that the slider 19 moves up and down within the elongated sliding opening 12 of the U-shaped folding plate 7, thereby causing the U-shaped folding plate 7 to flip on the top surface of the tunnel dust removal vehicle 1. When the device is not needed, the entire device can be flipped flat. On the top surface of the tunnel dust removal vehicle 1, when the device is needed, the U-shaped folding plate 7 can be placed vertically by rotating its rotating plate 6, thereby unfolding the upper dust-shielding mechanism 2; at the same time, the folding support 8 is fixedly installed at the edge of the rear of the top surface of the tunnel dust removal vehicle 1, and is arranged parallel to and spaced apart from the tilting motor 5. The folding support 8 can be a parallelogram-shaped frame structure; the U-shaped folding plate 7 is hinged to the folding support 8 and is located on the top of the air inlet 4; the first foldable dust-shielding umbrella is installed in the inner cavity of the U-shaped folding plate 7, and can extend out of the opposite sides of the U-shaped folding plate 7 or retract into the inner cavity, thereby sucking the dust around the tunnel dust removal vehicle 1 into the air inlet 4.

[0038] Specifically, the U-shaped folding plate 7 includes an integrally formed first side plate 9, a connecting plate 10, and a second side plate 11 that are vertically connected in a U-shape, with the U-shaped opening facing away from the folding support 8; wherein, the first side plate 9 has a long strip-shaped sliding opening 12 that runs through the two opposite sides along its length; the other end of the rotating plate 6 is hinged in the long strip-shaped sliding opening 12 to drive the U-shaped folding plate 7 to rotate; the connecting plate 10 is hinged to the folding support 8.

[0039] Furthermore, the first foldable dust-proof umbrella includes a first drive motor 13, a guide rail 14, a first unfolding plate 15, a second unfolding plate 16, a first gear 17, a second gear 18, a slider 19, a first folding umbrella 20, a second folding umbrella 21, and a first pull cord device 22; wherein, the guide rail 14 is fixedly installed on the middle of the inner wall of the second side plate 11 along the length direction of the second side plate 11, and is located between the first side plate 9 and the second side plate 11. The length of the guide rail 14 is much longer than the length of the second side plate 11, and extends out to form the U-shaped opening of the U-shaped folding plate 7; at the same time, the slider 19 can move along the length of the guide rail 14. The rotating plate 6 is slidably mounted on the guide rail 14 and located in the elongated sliding opening 12; the other end of the rotating plate 6 is hinged to the slider 19; and the first unfolding plate 15 and the second unfolding plate 16 are symmetrically arranged with respect to the guide rail 14 and are located outside the opposite side walls of the guide rail 14; at the same time, the first gear 17 is integrally formed on one end of the first unfolding plate 15, and it is located between the first side plate 9 and the second side plate 11, close to the connecting plate 10; the second gear 18 is integrally formed on one end of the second unfolding plate 16, and it is located between the first side plate 9 and the second side plate 11. And close to the connecting plate 10; the first gear 17 meshes with the second gear 18; the first drive motor 13 is fixedly installed on the outer wall of the second side plate 11, and its drive end passes through the second side plate 11 and is connected to the first gear 17 for transmission. The first gear 17 is sleeved on the drive end of the first drive motor 13. The first drive motor 13 is used to drive the first gear 17 to rotate and drive the second gear 18 to rotate, so that the first unfolding plate 15 and the second unfolding plate 16 move towards each other or away from each other, thereby enabling the first folding umbrella 20 and the second folding umbrella 21 to be opened or closed at the same time. Furthermore, one side of the first folding umbrella 20 is fixedly connected to one side wall of the guide rail 14, and the other side is connectable to the inner side wall of the first unfolding plate 15 in an unfoldable or retractable manner; one side of the second folding umbrella 21 is fixedly connected to the other opposite side wall of the guide rail 14, and the other side is connectable to the inner side wall of the second unfolding plate 16 in an unfoldable or retractable manner; the first pull cord 22 is disposed on the end of the guide rail 14 away from the first gear 17, and its two sides are respectively connected to the first folding umbrella 20 and the second folding umbrella 21 in a transmission connection, and are used to support the first folding umbrella 20 and the second folding umbrella 21 respectively.

[0040] When the first drive motor 13 is started, it drives the first unfolding plate 15 and the second unfolding plate 16 to move toward each other or away from each other through the first gear 17 and the second gear 18 respectively, thereby enabling the first folding umbrella 20 and the second folding umbrella 21 to be opened or closed at the same time.

[0041] Specifically, the first folding umbrella 20 includes a first dust-proof canvas 23, a plurality of first metal frames 24, a plurality of first metal rings 25, and a first steel wire rope 26; wherein, the first dust-proof canvas 23 is foldable in the shape of a fan, and one side is fixedly connected to one side wall of the guide rail 14, and the other side is foldable or retractable and connected to the inner side wall of the first unfolding plate 15; at the same time, the plurality of first metal frames 24 are fixedly installed on the first dust-proof canvas 23 at intervals along the diameter direction; and the first metal rings 25 are fixedly installed on one end of the corresponding first metal frame 24; one end of the first steel wire rope 26 is wound around one side of the first puller 22, and the other end is sequentially connected to the plurality of first metal rings 25.

[0042] Furthermore, the second folding umbrella 21 includes a second dust-proof canvas 27, a plurality of second metal frames 28, a plurality of second metal rings 29, and a second steel wire rope 30; wherein, the second dust-proof canvas 27 is foldable in the shape of a fan, and one side of it is fixedly connected to the opposite side wall of the guide rail 14, and the other side is expandable or retractable and connected to the inner side wall of the second unfolding plate 16; at the same time, the plurality of second metal frames 28 are fixedly installed on the second dust-proof canvas 27 at intervals along the diameter direction of the second dust-proof canvas 27; and the second metal rings 29 are fixedly installed on one end of the corresponding second metal frame 28; one end of the second steel wire rope 30 is wound around the other end of the first puller 22, and the other end is sequentially connected to the plurality of second metal rings 29.

[0043] In use, the first drive motor 13 rotates, causing the gear structure on the rotating plate 6 to rotate, which in turn causes the first unfolding plate 15 and the second unfolding plate 16 to simultaneously open the first dust-proof canvas 23 and the second dust-proof canvas 27 in a fan shape. This also causes the first wire rope 26 and the second wire rope 30 of the first puller 22 to be pulled out, thus securing the first metal frame 24 and the second metal frame 28. During retraction, the first drive motor 13 rotates, causing the gear structure on the rotating plate 6 to rotate, which in turn causes the first unfolding plate 15 and the second unfolding plate 16 to simultaneously retract the first dust-proof canvas 23 and the second dust-proof canvas 27. The first wire rope 26 and the second wire rope 30 of the first puller 22 are automatically retracted, and the first wire rope 26 and the second wire rope 30 are always kept taut, ensuring that the first dust-proof canvas 23 and the second dust-proof canvas 27 are neatly folded.

[0044] In addition, the side dust-shielding mechanism 3 includes a fixed plate 31, a second drive motor 32, a third unfolding plate 33, a second pull cord 34, and a second foldable dust-shielding umbrella. The fixed plate 31 is fixedly installed on one side wall of the rear of the tunnel dust removal vehicle 1, near the side of the air inlet 4. The second drive motor 32 is installed at the top of one side wall of the rear of the tunnel dust removal vehicle 1. One end of the third unfolding plate 33 is hinged to the drive end of the second drive motor 32, which drives the unfolding plate to move towards or away from the fixed plate 31. The two sides of the second foldable dust-shielding umbrella are unfoldable or retractable and connected between the fixed plate 31 and the third unfolding plate 33. The second pull cord 34 is fixedly installed on the bottom end of the fixed plate 31 and is connected to the second foldable dust-shielding umbrella for transmission, thus providing support for the second foldable dust-shielding umbrella.

[0045] Specifically, the second foldable dust-proof umbrella includes a third dust-proof canvas 35, multiple third metal frames 36, multiple third metal rings 37, and a third steel wire rope 38. The third dust-proof canvas 35 is foldable in the shape of a fan, with one side fixedly connected to one side wall of the fixing plate 31, and the other side being expandable or retractable and connected to the inner side wall of the third unfolding plate 33. Meanwhile, multiple third metal frames 36 are installed on the third dust-proof canvas 35 at intervals along the diameter direction of the third dust-proof canvas 35. In addition, the third metal rings 37 are fixedly installed on one end of the corresponding third metal frame 36. One end of the third steel wire rope 38 is wound around the second puller 34, and the other end is sequentially connected to multiple third metal rings 37.

[0046] In use, the second drive motor 32 rotates, causing the third unfolding plate 33 to open the third dust-proof canvas 35 in a fan shape, and pulling out the third steel wire rope 38 of the second puller 34 to fix the third metal frame 36. During retraction, the second drive motor 32 rotates, causing the third unfolding plate 33 to retract the third dust-proof canvas 35, and the third steel wire rope 38 of the second puller 34 automatically retracts. The third steel wire rope 38 remains taut at all times, ensuring the third dust-proof canvas 35 is neatly folded.

[0047] It should be noted that the aforementioned tilting motor 5, first drive motor 13, and second drive motor 32 can all be controlled from inside the driver's cab. When the tunnel dust removal vehicle 1 is started, the upper dust-covering mechanism 2 and the side dust-covering mechanism 3 are fully deployed, effectively concentrating dust-laden air at the vehicle's inlet, increasing the filtration capacity of the tunnel dust removal vehicle 1, and improving the dust removal effect. When the tunnel dust removal vehicle 1 is closed, the upper dust-covering mechanism 2 and the side dust-covering mechanism 3 can be quickly retracted, reducing construction time. Furthermore, the first dust-covering canvas 23, the second dust-covering canvas 27, and the third dust-covering canvas 35 can be replaced with other airtight flexible materials. Moreover, this dust-covering device can be used independently by placing the upper dust-covering mechanism 2 on the ground, making it an independent tunnel dust-covering shielding device.

[0048] In summary, the dust-covering device for the tunnel dust removal vehicle 1 proposed in this application features good mobility, high dust removal efficiency, and convenience. It effectively addresses the dust accumulation problem at the tunnel face and secondary lining trolley, and during tunnel construction, it helps the tunnel dust removal vehicle 1 gather dust-laden air, increasing the vehicle's suction range and thus improving its performance. The dust-covering device is integrated into the main body of the tunnel dust removal vehicle 1, automatically opening when the vehicle is started for rapid dust reduction. It can be retracted at the end of the dust removal process to avoid affecting the movement of subsequent tunnel construction vehicles. Specifically, the device adds dust-covering equipment around the air inlet 4 at the rear of the tunnel dust removal vehicle 1, significantly blocking dust-laden air from passing around the vehicle and increasing the amount of dust-laden gas drawn in, thereby improving the dust removal effect. Meanwhile, the dust-covering device is integrated into the rear of the tunnel dust removal vehicle 1, allowing for rapid deployment and retraction, as well as remote control, reducing operation time, saving on operational costs, and preventing personnel from being harmed by dust. Furthermore, the dust-covering device uses nylon fabric, which is tough, lightweight, and resistant to damage from repeated bending. Moreover, a first metal frame 24 is fixed to the first dust-covering canvas 23, a second metal frame 28 is fixed to the second dust-covering canvas 27, and a third metal frame 36 is fixed to the third dust-covering canvas 35, which strengthens the axial load-bearing capacity of the dust-covering device and prevents the edges of the first, second, and third dust-covering canvases 23, 27, and 35 from being bent by axial airflow. In addition, the first puller 22 can pull out the first wire rope 26 under external force, and the second puller 34 can pull out the second wire rope 30 under external force; the first and second wire ropes 26 and 30 can automatically retract when no external force is applied. Furthermore, the first puller 22 can fix the first metal frame 24, so that the first dust-proof canvas 23 can be folded in an orderly manner when it is retracted, and the second puller 34 can fix the second metal frame 28, so that the second dust-proof canvas 27 can be folded in an orderly manner when it is retracted.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust-covering device for a tunnel dust removal vehicle, characterized in that, The system includes an upper dust-blocking mechanism and two side dust-blocking mechanisms. The upper dust-blocking mechanism is rotatably mounted on the top rear of the tunnel dust removal vehicle and is deployable or retractable above the air inlet of the vehicle, used to draw dust from around the vehicle into the air inlet. The two side dust-blocking mechanisms are respectively mounted on opposite side walls of the rear of the vehicle and are deployable or retractable on the sides of the air inlet, used to draw dust from around the vehicle into the air inlet. The upper dust-blocking mechanism includes a tilting motor, a rotating plate, a U-shaped folding plate, a folding support, and a first foldable... The dust-shielding umbrella is folded; the flipping motor is fixedly installed at the rear of the top surface of the tunnel dust removal vehicle; one end of the rotating plate is rotatably connected to the drive end of the flipping motor, and the other end is hinged to the U-shaped folding plate. The flipping motor drives the rotating plate to rotate around the drive end and drives the U-shaped folding plate to flip; the folding support is fixedly installed at the rear of the top surface of the tunnel dust removal vehicle; the U-shaped folding plate is hinged to the folding support and is located on top of the air inlet; the first foldable dust-shielding umbrella is installed in the inner cavity of the U-shaped folding plate and can extend out of the opposite two sides of the U-shaped folding plate. The side panel can be retracted into the inner cavity to draw dust from around the tunnel dust removal vehicle into the air inlet; the U-shaped folding plate includes an integrally formed first side plate, a connecting plate, and a second side plate that are vertically connected in a U-shape; the first side plate has a long, narrow sliding opening that extends through two opposite sides along its length; the other end of the rotating plate is hinged to the long, narrow sliding opening to drive the U-shaped folding plate to rotate; the connecting plate is hinged to the folding support; the side dust-shielding mechanism includes a fixed plate, a second drive motor, a third unfolding plate, a second pull cord, and a second foldable dust-shielding umbrella; the fixed plate The first fixed plate is fixedly installed on one side wall of the rear of the tunnel dust removal vehicle, near the side of the air inlet; the second drive motor is installed at the top of one side wall of the rear of the tunnel dust removal vehicle; one end of the third unfolding plate is hinged to the drive end of the second drive motor, which drives the unfolding plate to move towards or away from the fixed plate; the two sides of the second foldable dust-shielding umbrella are unfoldable or retractable and connected between the fixed plate and the third unfolding plate; the second pull cable is fixedly installed on the bottom end of the fixed plate and is connected to the second foldable dust-shielding umbrella in a transmission connection.

2. The dust-covering device for a tunnel dust removal vehicle according to claim 1, characterized in that, The first foldable dust-shielding umbrella includes a first drive motor, a guide rail, a first unfolding plate, a second unfolding plate, a first gear, a second gear, a slider, a first folding umbrella, a second folding umbrella, and a first pull cord device. The guide rail is fixedly installed on the inner wall of the second side plate and is arranged along the length direction of the second side plate, located between the first side plate and the second side plate. The slider is slidably installed on the guide rail along the length direction of the guide rail and is located in the elongated sliding opening. The other end of the rotating plate is hinged to the slider. The first unfolding plate and the second unfolding plate are symmetrically arranged with respect to the guide rail and are located outside the opposite side walls of the guide rail. The first gear is integrally formed on one end of the first unfolding plate and is located between the first side plate and the second side plate, close to the connecting plate. The second gear is integrally formed on one end of the second unfolding plate and is located... Located between the first side plate and the second side plate, and close to the connecting plate; the first gear meshes with the second gear; the first drive motor is fixedly mounted on the outer wall of the second side plate, and its drive end passes through the second side plate and is connected to the first gear for transmission, for driving the first gear and the second gear to rotate, so that the first unfolding plate and the second unfolding plate move toward each other or away from each other; one side of the first folding umbrella is fixedly connected to one side wall of the guide rail, and the other side is connectable to the inner side wall of the first unfolding plate in an unfoldable or retractable manner; one side of the second folding umbrella is fixedly connected to the other opposite side wall of the guide rail, and the other side is connectable to the inner side wall of the second unfolding plate in an unfoldable or retractable manner; the first pull cord is disposed on the end of the guide rail away from the first gear, and its two sides are respectively connected to the first folding umbrella and the second folding umbrella for transmission.

3. The dust-covering device for a tunnel dust removal vehicle according to claim 2, characterized in that, The first folding umbrella includes a first dust-proof canvas, multiple first metal frames, multiple first metal rings, and a first steel wire rope; the first dust-proof canvas is fan-shaped, with one side fixedly connected to one side wall of the guide rail, and the other side being expandable or retractable and connected to the inner side wall of the first unfolding plate; multiple first metal frames are installed on the first dust-proof canvas at intervals along the diameter direction of the first dust-proof canvas; the first metal ring is fixedly installed on one end of the corresponding first metal frame; one end of the first steel wire rope is wound around one side end of the first puller, and the other end is sequentially connected to multiple first metal rings.

4. The dust-covering device for a tunnel dust removal vehicle according to claim 2, characterized in that, The second folding umbrella includes a second dust-proof canvas, multiple second metal frames, multiple second metal rings, and a second steel wire rope. The second dust-proof canvas is fan-shaped, with one side fixedly connected to the opposite side wall of the guide rail, and the other side being expandable or retractable and connected to the inner side wall of the second unfolding plate. Multiple second metal frames are installed on the second dust-proof canvas at intervals along the diameter direction of the second dust-proof canvas. The second metal rings are fixedly installed on one end of the corresponding second metal frame. One end of the second steel wire rope is wound around the other end of the first puller, and the other end is sequentially connected to multiple second metal rings.

5. The dust-covering device for a tunnel dust removal vehicle according to claim 1, characterized in that, The second foldable dust-proof umbrella includes a third dust-proof canvas, multiple third metal frames, multiple third metal rings, and a third steel wire rope; the third dust-proof canvas is fan-shaped, with one side fixedly connected to one side wall of the fixed plate, and the other side being expandable or retractable and connected to the inner side wall of the third expandable plate; multiple third metal frames are installed on the third dust-proof canvas at intervals along the diameter direction of the third dust-proof canvas; the third metal rings are fixedly installed on one end of the corresponding third metal frame; one end of the third steel wire rope is wound around the second puller, and the other end is sequentially connected to multiple third metal rings.

Images