Dust falling device and heading machine
By setting a dust curtain on the tunnel boring machine to abut against the tunnel wall, combined with water spraying and dust suction devices, the problem of poor ventilation and dust removal effect on the tunneling working face was solved, and efficient dust control was achieved.
Patent Information
- Application Number
- CN202422886720.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-25
AI Technical Summary
In the existing technology, the dust removal effect of ventilation dust removal at the excavation working face is poor. Due to the limitations of the working face cross-section and wind speed, it is unable to effectively reduce the harm of dust to workers.
A dust curtain is set on the tunnel boring machine to abut against the tunnel wall to prevent dust from dispersing. An adjustment port is opened on the dust curtain for the rotation of the cutting arm. The gap is closed by a flexible sealing part, and water spraying parts are used to spray water to reduce dust. The remaining dust is absorbed by a dust removal fan and air duct.
It improves the dust reduction effect of the excavation working face, reduces the harm of dust to the workers behind, prevents dust from floating out of the adjustment port, and realizes centralized and efficient dust reduction.
Smart Images
Figure CN223344094U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tunnel boring machines, and in particular to a dust suppression device and a tunnel boring machine. Background Art
[0002] A tunneling face is a passage created in the surrounding rock by drilling, blasting, or mechanical excavation in underground coal mines or tunneling projects, allowing equipment and personnel to move forward. Because the tunneling face remains closed until it is penetrated, it generates a large amount of dust, causing significant inconvenience to operators and necessitating prompt dust removal.
[0003] At present, the main dust reduction measure for tunneling working faces is ventilation and dust removal, that is, the dust generated on the tunneling working face is sucked out of the tunnel through the air duct.
[0004] However, due to the limitations of the working surface section and wind speed, the dust removal effect of exhausting dust only through ventilation is poor. Utility Model Content
[0005] The present application provides a dust suppression device and a tunnel boring machine, which are used to solve the problem of poor dust removal effect at the tunneling working face by only exhausting dust through ventilation.
[0006] In one aspect, the present application provides a dust suppression device, comprising a dust removal fan, a dust removal air duct, a flexible closure, a dust curtain, and a water spraying member;
[0007] The dust curtain is used to be set on the tunnel boring machine and is used to abut against the tunnel wall to prevent dust from floating out; the dust curtain is provided with an adjustment port for the movement of the cutting arm on the tunnel boring machine, and the flexible closing member is provided on the dust curtain and connected to the cutting arm to close the gap between the dust curtain and the cutting arm; the dust removal air duct is connected to the dust removal fan, and one end of the dust removal air duct is provided on the dust curtain for absorbing dust; the water spraying member is provided on the dust curtain to spray water toward the working face to reduce dust.
[0008] In some embodiments, the dust curtain includes a plurality of blocking panels, which are sequentially spliced together to form a blocking surface for blocking dust.
[0009] In some embodiments, the dust curtain also includes a horizontal support rod, a first diagonal support rod and a second diagonal support rod. The first diagonal support rod, the horizontal support rod and the second diagonal support rod are connected end to end to form a triangle. The blocking plate is connected to the horizontal support rod. The first diagonal support rod and the second diagonal support rod are both used to connect to the tunnel boring machine.
[0010] In some embodiments, the barrier sheet is a rubber sheet.
[0011] In some embodiments, the flexible sealing member is a corrugated plate, which is located in the adjustment port and connected to the dust curtain, and is used to connect to the cutting arm.
[0012] In some embodiments, the water spraying member includes a water spraying frame and a plurality of spray heads, the water spraying frame is arranged on the dust curtain, and the spray heads are arranged on the water spraying frame to spray water toward the working surface.
[0013] In some embodiments, the water spraying member further comprises a plurality of water spraying blocks, which are circumferentially arranged on the dust curtain, and the water spraying blocks are provided with nozzles for spraying water toward the side away from the cutting arm.
[0014] In some embodiments, the dust removal air duct includes a three-way pipe, two air cylinders and two dust suction heads. The three-way pipe is connected to the dust removal fan, and the two air cylinders are respectively connected to the three-way pipe. The dust suction heads are correspondingly arranged on the air cylinders, and the dust suction heads are connected to the dust curtain.
[0015] In some embodiments, a grid is provided on the vacuum head, and the grid is used to prevent rocks from entering the vacuum head.
[0016] On the other hand, the present application provides a tunnel boring machine, comprising a tunnel boring machine body and a dust suppression device arranged on the tunnel boring machine body.
[0017] The present application provides a dust reduction device and a tunnel boring machine. The dust reduction device is configured to provide a dust curtain on the tunnel boring machine so that the dust curtain abuts against the tunnel wall to prevent dust from drifting to the rear of the tunnel boring machine, thereby reducing the harm of dust to the rear workers. The dust curtain is provided with an adjustment port for the cutting arm to rotate to avoid obstruction of the cutting arm. The gap between the dust curtain and the cutting arm is closed by a flexible closing member to avoid the possibility of dust drifting out from the adjustment port. The working surface is sprayed with water by a water spraying member to reduce dust, and the remaining dust is absorbed by a dust removal fan and a dust removal air duct, thereby improving the dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0019] Figure 1 A schematic diagram of the structure of the dust suppression device provided in an embodiment of the present application;
[0020] Figure 2 1 is a structural diagram of the dust removal duct;
[0021] Figure 3 for Figure 1 Schematic diagram of the structure on the other side of the middle dust curtain.
[0022] Description of reference numerals:
[0023] 1. Roadheader; 2. Cutting boom;
[0024] 100, dust removal fan; 200, dust removal air duct; 210, three-way pipe; 220, air duct; 230, dust collector head; 231, grid; 300, flexible closure; 400, dust curtain; 410, barrier plate; 420, cross brace; 430, first diagonal brace; 440, second diagonal brace; 500, water spray component; 510, water spray rack; 520, nozzle; 530, water spray block.
[0025] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION
[0026] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
[0027] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0028] In this application, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0029] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0030] A tunneling face is a passage created in the surrounding rock by drilling, blasting, or mechanical excavation in underground coal mines or tunneling projects, allowing equipment and personnel to move forward. Because the tunneling face remains closed until it is penetrated, it generates a large amount of dust, causing significant inconvenience to operators and necessitating prompt dust removal.
[0031] At present, the main dust reduction measure for tunneling working faces is ventilation and dust removal, that is, the dust generated on the tunneling working face is sucked out of the tunnel through the air duct.
[0032] However, due to the limitations of the working surface section and wind speed, the dust removal effect of exhausting dust only through ventilation is poor.
[0033] In order to solve the above problems, the present application provides a dust reduction device and a tunnel boring machine. The dust reduction device is provided with a dust curtain on the tunnel boring machine so that the dust curtain abuts against the tunnel wall to prevent dust from drifting to the rear of the tunnel boring machine, thereby reducing the harm of dust to the rear workers. An adjustment port is provided on the dust curtain for the rotation of the cutting arm to avoid obstruction of the cutting arm, and the gap between the dust curtain and the cutting arm is closed by a flexible closing part to avoid the possibility of dust drifting out from the adjustment port. The working surface is sprayed with water by a water spraying part to reduce dust, and the remaining dust is absorbed by the dust removal fan and the dust removal air duct, thereby improving the dust reduction effect.
[0034] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.
[0035] On the one hand, the present application provides a dust suppression device, referring to Figure 1 and Figure 3 The dust suppression device includes a dust removal fan 100, a dust removal air duct 200, a flexible sealing member 300, a dust curtain 400 and a water spray member 500;
[0036] The dust curtain 400 is used to be set on the tunnel boring machine 1 and is used to abut against the tunnel wall to prevent dust from floating out; the dust curtain 400 is provided with an adjustment port for the movement of the cutting arm 2 on the tunnel boring machine 1, and the flexible closing member 300 is provided on the dust curtain 400 and connected to the cutting arm 2 to close the gap between the dust curtain 400 and the cutting arm 2; the dust removal duct 200 is connected to the dust removal fan 100, and one end of the dust removal duct 200 is provided on the dust curtain 400 for absorbing dust; the water spraying member 500 is provided on the dust curtain 400 to spray water toward the working face to reduce dust.
[0037] The dust removal fan 100 is mounted on the tunnel boring machine 1, and the dust removal duct 200 is connected to the dust removal fan 100 to absorb dust generated during the operation of the tunnel boring machine 1. A dust curtain 400 is mounted at the front end of the tunnel boring machine 1. The dust curtain 400 has an adjustment opening, and the cutting arm 2 of the tunnel boring machine 1 is inserted into the adjustment opening and can rotate within the adjustment opening. The flexible sealing member 300 is installed in the adjustment opening and connected to the cutting arm 2, thereby closing the gap between the cutting arm 2 and the adjustment opening without affecting the movement of the cutting arm 2.
[0038] In the examples of this application, refer to Figure 1 and Figure 3 There are two dust curtains 400, which are respectively located on both sides of the cutting arm 2. The two dust curtains 400 are spliced to form a barrier surface to prevent dust from floating to the rear of the tunnel boring machine 1. The adjustment port is located between the two dust curtains 400. The outer edges of the dust curtains 400 are respectively in contact with the surrounding walls of the tunnel to achieve dust blocking, so as to concentrate the dust generated by the tunnel boring machine 1 during operation at the front end of the tunnel boring machine 1, and then carry out centralized dust reduction treatment to improve the dust reduction effect.
[0039] In this application, a dust curtain 400 is used to block dust and gather it at the front end of the tunnel boring machine 1 to reduce the harm of dust to the workers at the rear. An adjustment port is provided on the dust curtain 400 for the rotation of the cutting arm 2 to avoid obstruction of the cutting arm 2. The gap between the dust curtain 400 and the cutting arm 2 is closed by a flexible closing member 300 to avoid the possibility of dust floating out from the adjustment port. The water spraying member 500 is used to spray water on the working surface to reduce dust, and the remaining dust is absorbed by the dust removal fan 100 and the dust removal duct 200, and the dust is processed in a centralized manner to improve the dust reduction effect.
[0040] In some embodiments, the dust curtain 400 includes a plurality of blocking panels 410 , which are sequentially spliced together to form a blocking surface for blocking dust.
[0041] In this application, the blocking plate 410 is a rectangular plate, and the lengths of each blocking plate 410 are different, so as to facilitate installation on the tunnel boring machine 1 and keep the top of the dust curtain 400 flush and abut against the top of the tunnel, and the width of the formed dust curtain 400 is equal to the width of the tunnel to block dust.
[0042] Furthermore, adjacent blocking plates 410 are detachably connected to form a whole by bolts or buckles, so that damaged blocking plates 410 can be replaced at any time during use.
[0043] In some embodiments, reference Figure 1 The dust curtain 400 also includes a horizontal support rod 420, a first diagonal support rod 430 and a second diagonal support rod 440. The first diagonal support rod 430, the horizontal support rod 420 and the second diagonal support rod 440 are connected end to end to form a triangle. The blocking plate 410 is connected to the horizontal support rod 420. The first diagonal support rod 430 and the second diagonal support rod 440 are both used to connect to the tunnel boring machine 1.
[0044] In this embodiment of the present application, the dust curtain 400 also has two triangular supports, corresponding to the two dust curtains 400. A cross brace 420 is positioned near the top of the dust curtain 400. The first and second diagonal braces 430 and 440 are respectively secured to the cross brace 420 and then connected to the tunnel boring machine 1 to provide support and fixation for the dust curtain 400. The baffles 410 that comprise the dust curtain 400 are each bolted to the brace and then secured to the corresponding first and second diagonal braces 430 and 440, securing the baffles 410 and improving the stability of the dust curtain 400.
[0045] Furthermore, in order to strengthen the support effect of the blocking plate 410, multiple reinforcing rods are fixed between the first diagonal support rod 430 and the second diagonal support rod 440 to improve the strength of the entire triangular support and provide more connection points for the blocking plate 410 to improve the stability of the blocking plate 410.
[0046] In some embodiments, the barrier plate 410 is a rubber plate.
[0047] In the present application, a rubber sheet is used as the barrier plate 410, so that when the barrier plate 410 is abutted against the tunnel, the noise is reduced and the movement of the tunnel boring machine 1 is less affected. The rubber sheet has good elasticity and flexibility, can adapt to different working environments and conditions, and effectively prevent dust from floating out. The wear resistance of the rubber sheet can reduce the wear caused by friction, extend its service life, and maintain the dust blocking effect. It has good corrosion resistance; the rubber sheet also has good insulation performance, which can play an important protective role in electrical equipment and reduce electrical failures caused by dust; the rubber sheet can be cut into different shapes and sizes as needed, is easy to install, and is simple to maintain and easy to replace. The rubber sheet also has good waterproof performance, which can prevent moisture penetration and is suitable for dust blocking in humid environments.
[0048] In some embodiments, the flexible sealing member 300 is a corrugated plate, which is located in the adjustment port and connected to the dust curtain 400 , and is used to connect to the cutting arm 2 .
[0049] One side of the corrugated plate is connected to the dust curtain 400, and the other side is connected to the cutting arm 2 to close the gap between the adjustment port and the cutting arm 2. In other embodiments, the flexible sealing member 300 can also be replaced by cloth, flexible plastic, etc.
[0050] In some embodiments, reference Figure 3 The water spraying member 500 includes a water spraying frame 510 and a plurality of spray heads 520 . The water spraying frame 510 is disposed on the dust curtain 400 , and the spray heads 520 are disposed on the water spraying frame 510 to spray water toward the working surface.
[0051] The water spray rack 510 is arranged horizontally, and the nozzle 520 on the water spray rack 510 sprays water toward the working surface of the cutting arm 2 to directly spray water to the source of dust generation to reduce dust. Among them, the nozzle 520 can be a nozzle 520 that sprays water mist to reduce water consumption.
[0052] In some embodiments, the water spraying member 500 further includes a plurality of water spraying blocks 530 , which are circumferentially arranged on the dust curtain 400 . The water spraying blocks 530 are provided with nozzles 520 to spray water toward the side away from the cutting arm 2 .
[0053] The water spray blocks 530 are circumferentially arranged around the dust curtain 400, and the nozzles 520 on the water spray blocks 530 spray water toward the side away from the cutting boom 2. This sprays the gap between the dust curtain 400 and the roadway, further reducing dust from floating out of the gap between the dust curtain 400 and the roadway and affecting the air quality behind the dust curtain 400.
[0054] Furthermore, multiple second water spray blocks can be set up. The second water spray blocks are circumferentially arranged on the dust curtain 400 and located on the side of the water spray block 530 close to the cutting arm 2. The second water spray blocks are also provided with nozzles, and the nozzles spray water in opposite directions to moisten the middle space and achieve dust reduction.
[0055] In some embodiments, reference Figure 1 and Figure 2 The dust removal duct 200 includes a three-way pipe 210, two air cylinders 220 and two dust collection heads 230. The three-way pipe 210 is connected to the dust removal fan 100, and the two air cylinders 220 are respectively connected to the three-way pipe 210. The dust collection heads 230 are correspondingly arranged on the air cylinders 220, and the dust collection heads 230 are connected to the dust curtain 400.
[0056] The air intake of the dust removal fan 100 is connected to one end of a three-way pipe 210. The other ends of the three-way pipe 210 are connected to two air cylinders 220. Two dust collection heads 230 are mounted on the ends of the air cylinders 220. The dust curtain 400 has two mounting openings, and the dust collection heads 230 are mounted on the two mounting openings to absorb dust from the front end of the tunnel boring machine 1.
[0057] In some embodiments, a grid 231 is provided on the vacuum head 230 , and the grid 231 is used to prevent rocks from entering the vacuum head 230 .
[0058] The grid 231 is fixed on the dust collecting head 230 to prevent large pieces of coal and rock from falling into the dust collecting head 230 and causing damage to the dust removal fan 100, thereby ensuring the dust removal effect.
[0059] On the other hand, the present application provides a tunnel boring machine, comprising a tunnel boring machine body and a dust reduction device arranged on the tunnel boring machine body.
[0060] Among them, the dust reduction device in this embodiment has the same structure as the dust reduction device provided in any of the above embodiments, and can bring the same or similar technical effects. They will not be described one by one here, and the details can be referred to the description of the above embodiments.
[0061] The tunnel boring machine provided in the present application is equipped with a dust curtain 400 on the tunnel boring machine 1 so that the dust curtain 400 abuts against the tunnel wall to prevent dust from drifting to the rear of the tunnel boring machine 1, thereby reducing the harm of dust to the rear workers, and an adjustment port is provided on the dust curtain 400 for the rotation of the cutting arm 2 to avoid obstruction of the cutting arm 2, and the gap between the dust curtain 400 and the cutting arm 2 is closed by a flexible closing member 300 to avoid the possibility of dust drifting out from the adjustment port, and the working surface is sprayed with water by the water spraying member 500 to reduce dust, and the remaining dust is absorbed by the dust removal fan 100 and the dust removal duct 200, thereby improving the dust reduction effect.
[0062] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present invention are indicated by the following claims.
[0063] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A dust suppression device, characterized in that: It comprises a dust removal fan (100), a dust removal air duct (200), a flexible sealing member (300), a dust shield curtain (400) and a water spray member (500); The dust curtain (400) is used to be arranged on the tunnel boring machine (1) and to abut against the tunnel wall to prevent dust from floating out; the dust curtain (400) is provided with an adjustment port for allowing the cutting arm (2) on the tunnel boring machine (1) to move; the flexible sealing member (300) is arranged on the dust curtain (400) and connected to the cutting arm (2) to close the gap between the dust curtain (400) and the cutting arm (2); the dust removal duct (200) is connected to the dust removal fan (100), and one end of the dust removal duct (200) is arranged on the dust curtain (400) to absorb dust; the water spraying member (500) is arranged on the dust curtain (400) to spray water toward the working surface to reduce dust.
2. The dust suppression device according to claim 1, characterized in that: The dust-blocking curtain (400) comprises a plurality of blocking plates (410), and the plurality of blocking plates (410) are sequentially spliced to form a blocking surface for blocking dust.
3. The dust suppression device according to claim 2, characterized in that: The dust curtain (400) further comprises a transverse support rod (420), a first diagonal support rod (430) and a second diagonal support rod (440), wherein the first diagonal support rod (430), the transverse support rod (420) and the second diagonal support rod (440) are sequentially connected end to end to form a triangle, the blocking plate (410) is connected to the transverse support rod (420), and the first diagonal support rod (430) and the second diagonal support rod (440) are both used for connecting to the roadheader (1).
4. The dust suppression device according to claim 2, characterized in that: The blocking plate (410) is a rubber plate.
5. The dust suppression device according to any one of claims 1 to 4, characterized in that: The flexible sealing member (300) is a corrugated plate, which is located in the regulating port and connected to the dust curtain (400), and is used to connect to the cutting arm (2).
6. The dust suppression device according to any one of claims 1 to 4, characterized in that: The water spraying member (500) comprises a water spraying frame (510) and a plurality of spray heads (520); the water spraying frame (510) is arranged on the dust-blocking curtain (400); and the spray heads (520) are arranged on the water spraying frame (510) to spray water toward the working surface.
7. The dust suppression device according to claim 6, characterized in that: The water spraying member (500) further comprises a plurality of water spraying blocks (530), wherein the water spraying blocks (530) are circumferentially arranged on the dust curtain (400), and the water spraying blocks (530) are provided with nozzles (520) for spraying water towards the side away from the cutting arm (2).
8. The dust suppression device according to any one of claims 1 to 4, characterized in that: The dust removal air duct (200) comprises a three-way pipe (210), two air cylinders (220) and two dust collecting heads (230); the three-way pipe (210) is connected to the dust removal fan (100); the two air cylinders (220) are respectively connected to the three-way pipe (210); the dust collecting heads (230) are correspondingly arranged on the air cylinders (220); and the dust collecting heads (230) are connected to the dust shielding curtain (400).
9. The dust suppression device according to claim 8, characterized in that: The dust collecting head (230) is provided with a grid net (231), and the grid net (231) is used to prevent rock blocks from entering the dust collecting head (230).
10. A tunnel boring machine, characterized in that: The invention comprises a tunnel boring machine body and a dust suppression device as claimed in any one of claims 1 to 9, which is arranged on the tunnel boring machine body.