A dust removal device moving with a tunnel construction trolley

Abstract

The application provides a dust removal device moving with a tunnel construction trolley, which comprises a dust removal base arranged on the tunnel construction trolley, a spraying assembly for spraying water mist during tunnel construction and comprising an annular pipeline and a spray head arranged on the annular pipeline, a matching assembly comprising a matching part matched with the shape of the annular pipeline, the matching assembly being arranged on the dust removal base and used for fixing the spraying assembly, and a power assembly used for conveying water to the spraying assembly, wherein the matching part comprises a plurality of annular parts screwed together, the annular pipeline comprises a plurality of pipe sections connected through quick couplings, and the matching part and the annular pipeline are matched with the tunnel cross section by adjusting the number of the annular parts and the pipe sections and adjusting the mounting positions of the annular parts and the pipe sections. The spraying coverage range is always consistent with the profile of the tunnel face, the dust falling pertinence and efficiency are improved, and at the same time of the spraying dust removal, the air pipe blowing is supplemented, so that the mist drops are uniformly distributed and efficiently moved in a large area, and the safety level of construction is improved.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a dust removal device that moves with a tunnel construction trolley. Background Technology

[0002] In tunnel construction, especially in enclosed spaces using trackless drilling and blasting methods, large amounts of free silica dust are released during the four key processes: drilling, blasting, shotcreting, and loading and transporting excavated material. This significantly increases dust concentration in these stages. This dust not only affects the health of construction workers but also poses safety hazards such as explosions and fires, while simultaneously reducing construction efficiency and quality. In the complex construction environment of tunnels and underground engineering projects, environmental purification measures have become crucial for ensuring the safety of construction workers and the normal operation of machinery. Dust removal and air purification are indispensable technical aspects of construction operations, preventing workers from working in high-dust-concentration environments for extended periods and developing occupational diseases such as silicosis. Traditional tunnel construction often uses purely mechanical ventilation systems, which are insufficient to achieve the desired dust removal effect and are difficult to reduce dust levels. In actual projects, traditional dust removal methods such as water trucks and dust collectors suffer from limited dust removal range, poor effectiveness, and high energy consumption. Utility Model Content In view of this, this application provides a dust removal device that moves with the tunnel construction trolley. This device is used in conjunction with the existing ventilation ducts in the tunnel. While spraying dust, it is also assisted by blowing air through the ventilation ducts, so that the droplets can be evenly distributed over a large area and transported efficiently. In addition, the dust removal device can be adapted to tunnels of various cross-sections, improving its practicality and versatility.

[0003] To achieve the above objectives, this application provides the following technical solution: A dust removal device that moves with a tunnel construction trolley includes: The dust collection base is installed on the tunnel construction trolley; A spray assembly for spraying water mist during tunnel construction, and includes an annular pipe and nozzles disposed on the annular pipe; The fitting assembly includes a fitting part adapted to the shape of the annular pipe, the fitting assembly being disposed on the dust removal base and used to fix the spray assembly; A power unit for supplying water to the spray assembly; The mating component includes multiple screw-connected annular components, and the annular pipe includes multiple pipe segments connected by quick connectors. By adjusting the number of the annular components and the pipe segments, as well as adjusting the installation position of the annular components and the pipe segments, the mating component and the annular pipe can be adapted to the tunnel cross-section.

[0004] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the mating assembly further includes a suspension member for hanging the spray assembly on the mating member, and the suspension member is connected to the nozzle.

[0005] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the suspension component includes: The upper hook is suspended on the mating component; The first crossbeam is connected to the upper hook; The second crossbeam is connected to the nozzle via a suspension rope; A connector for connecting the first crossbeam and the second crossbeam.

[0006] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the upper hook is formed by bending a strip, and an anti-slip pad is provided at the contact portion between the upper hook and the mating part; and / or, The mating component is provided with fixing blocks, which are located on both sides of the upper hook.

[0007] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the power component includes: Water supply hose, connected to the annular pipe; A water pump is used to deliver water to the annular pipe through the water supply hose.

[0008] Optionally, in the dust removal device that moves with the tunnel construction trolley, the power assembly is provided in two sets, and is symmetrically arranged about the axis of symmetry of the annular pipe.

[0009] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the nozzles are evenly distributed on the annular pipe.

[0010] Optionally, the dust removal device that moves with the tunnel construction trolley also includes an adjustment component for adjusting the pitch angle of the nozzle.

[0011] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the adjustment component includes: A nozzle connecting sleeve is disposed on the annular pipe, the nozzle connecting sleeve having an inwardly recessed portion, the portion forming a spherical cavity; A spherical connector includes a spherical part and an outer end part connected to the spherical part. The spherical part is disposed in the spherical cavity and can rotate up and down relative to the spherical cavity. The outer end part is provided with an external thread, and the nozzle is screwed to the outer end part. A locking nut is fitted onto the outer end portion and located between the nozzle and the nozzle connecting sleeve; Specifically, tightening the locking nut presses the ball joint and the nozzle connecting sleeve together to frictionally lock the spray angle of the nozzle, and loosening the locking nut releases the locking state of the ball joint and the nozzle connecting sleeve.

[0012] Optionally, in the dust removal device that moves with the tunnel construction trolley described above, the annular pipe includes a water conveying section, a connecting section, and a connecting section connecting the water conveying section and the connecting section. The diameter of the water conveying section is larger than the diameter of the connecting section, and the connecting section is connected to the nozzle.

[0013] This application provides a dust suppression device that moves with a tunnel construction trolley. The entire device is integrated on the tunnel construction trolley and moves synchronously with the trolley to the new tunnel face. After blasting, it can immediately start spraying to suppress dust without the need for additional equipment, thus improving work efficiency and tunnel air quality. By increasing or decreasing the number of pipe sections and annular components and their installation positions, it can flexibly match tunnel excavation sections of different diameters, ensuring that the spray coverage area is always consistent with the tunnel face outline, avoiding dust suppression blind spots or water mist waste, and significantly improving the targeting and efficiency of dust suppression. While spraying to suppress dust, it is supplemented by air blowing through ducts, enabling the droplets to achieve large-area uniform distribution and efficient transport, improving the safety level of construction. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For users of ordinary skills in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 A schematic diagram of the dust removal device provided in this application when it is located in a tunnel; Figure 2 A schematic diagram of the dust removal device provided in this application; Figure 3 A schematic diagram of the suspension component provided in this application; Figure 4 A schematic diagram of the nozzle provided in this application.

[0016] exist Figures 1-4 middle: 1. Ring pipe; 2. Nozzle; 3. Fitting parts; 4. Suspension parts; 5. Water supply hose; 6. Water pump; 7. Tunnel; 8. Surrounding rock; 9. Lining; 10. Air duct; 41. Upper hook; 42. First crossbeam; 43. Second crossbeam; 44. Connector; 45. Suspension rope. Detailed Implementation

[0017] This application provides a dust removal device that moves with a tunnel construction trolley. The device is used in conjunction with the existing ventilation ducts in the tunnel. While spraying dust, it is also assisted by blowing air through the ventilation ducts, so that the droplets can be evenly distributed over a large area and transported efficiently. In addition, the dust removal device can be adapted to tunnels of various cross-sections, improving its practicality and versatility.

[0018] 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. Based on the embodiments of this application, all other embodiments obtained by users of ordinary skills in the art without creative effort are within the scope of protection of this application.

[0019] like Figures 1-4 As shown, a dust removal device that moves with a tunnel construction trolley includes: a dust removal base, mounted on the tunnel 7 construction trolley; a spray assembly for spraying water mist during tunnel 7 construction, including an annular pipe 1 and nozzles 2 mounted on the annular pipe 1; a mating assembly including mating parts 3 adapted to the shape of the annular pipe 1, the mating assembly being mounted on the dust removal base and used to fix the spray assembly; and a power assembly for supplying water to the spray assembly. The mating parts 3 include multiple threaded annular parts, and the annular pipe 1 includes multiple pipe sections connected by quick couplings. By adjusting the number of annular parts and pipe sections, and adjusting the installation position of the annular parts and pipe sections, the mating parts and annular pipe 1 are adapted to the cross-section of the tunnel 7. The quick couplings can be plug-in couplings, clamp couplings, or threaded couplings.

[0020] Specifically, the dust removal base is configured as a flat plate and fixedly mounted on the front end or upper annular support frame of the trolley base. The trolley base has sufficient structural strength and space allowance to provide a stable installation foundation for the annular spray device without interfering with the normal movement and operation of the trolley. The mating component 3 is an annular structure mounted on the trolley and is composed of multiple annular parts connected by screws. The annular pipe 1 is composed of multiple quick connectors and is used for water transportation.

[0021] like Figure 1 As shown, the relative positions of tunnel 7, surrounding rock 8, lining 9, and ventilation duct 10 are illustrated. During operation, when nozzle 2 sprays water mist, ventilation duct 10 inside tunnel 7 blows air, achieving coordinated dust suppression through spraying and ventilation, resulting in large-area uniform distribution and efficient transport of mist droplets.

[0022] In summary, the entire device is integrated onto the construction trolley of Tunnel 7 and moves synchronously to the new working face. After blasting, the spray dust suppression can be activated immediately without the need for additional equipment, thus improving work efficiency and air quality in Tunnel 7. By increasing or decreasing the number of pipe sections and annular components and their installation positions, it can flexibly match the excavation cross-sections of Tunnel 7 with different diameters, ensuring that the spray coverage area is always consistent with the contour of the working face, avoiding dust suppression blind spots or water mist waste, and significantly improving the targeting and efficiency of dust suppression. While spraying dust, the air duct 10 is used to blow air, enabling the droplets to achieve large-area uniform distribution and efficient transport, improving the safety level of construction.

[0023] It should be noted that the quick connector can be a common quick-connect type on the market; nozzle 2 is atomizing nozzle 2.

[0024] It should also be noted that the duct 10 device uses PVC double-resistant flexible hose, which is specially designed for the construction of tunnel 7. In one example, the diameter of tunnel 7 ranges from 1.5m to 1.8m. Its circular cross-section design effectively reduces the frictional resistance inside the pipe and significantly improves the airflow efficiency.

[0025] It should also be noted that the power unit, as one of the core components of the dust removal device, is responsible for providing continuous and stable power output to the entire spray assembly. It uses a high-efficiency, reliable electric motor, which transmits power to all parts of the spray assembly through a transmission mechanism, ensuring the normal operation of the spraying operation. The water pump 6 (discussed later) uses an explosion-proof electric motor, characterized by high power, low noise, and stable operation. It is suitable for the humid and dusty environment inside tunnel 7. The motor is connected to an external power source via cable, or a battery pack can be used as a backup power source to ensure normal operation even in the event of a power outage. Located between the power source and the spray assembly, it reduces the speed of the power source and increases the torque to meet the power requirements of the spray system.

[0026] Furthermore, the mating assembly also includes a suspension member 4 for hanging the spray assembly on the mating member 3, and the suspension member 4 is connected to the nozzle 2. Thus, the spray assembly is installed on the mating member 3 by suspension, which is a simple and convenient installation method.

[0027] Furthermore, the suspension component 4 includes: an upper hook 41, suspended on the mating component 3; a first crossbeam 42, connected to the upper hook 41; a second crossbeam 43, connected to the nozzle 2 via a suspension rope 45; and a connector 44, used to connect the first crossbeam 42 and the second crossbeam 43. It should be noted that the suspension rope 45 is a steel wire rope or flexible nylon.

[0028] The nylon rope possesses excellent wear resistance, aging resistance, and corrosion resistance, making it suitable for long-term use within Tunnel 7. The crossbeams are made of galvanized iron, offering good strength and rigidity, thus increasing the overall structural stability and load-bearing capacity. The crossbeams are equipped with mounting holes or fixing devices to accommodate hooks, auxiliary supports, or lighting brackets, etc.

[0029] The upper hook 41, first crossbeam 42, connector 44, second crossbeam 43, and suspension rope 45 form a multi-point support system that combines rigidity and flexibility. Compared with single-point suspension, this effectively suppresses the swaying, twisting, or displacement of the spray pipe under the movement of the trolley, blasting vibration, or airflow disturbance. In addition, the second crossbeam 43 is connected to the nozzle 2 via the suspension rope 45, and the height and tilt angle of the nozzle 2 can be finely adjusted by adjusting the rope length or position.

[0030] It should be noted that the upper hook 41 is made of galvanized iron.

[0031] Furthermore, the upper hook 41 is formed by bending a strip, and an anti-slip pad is provided at the contact part between the upper hook 41 and the mating part 3; and / or, the mating part 3 is provided with a fixing block, which is provided on both sides of the upper hook 41.

[0032] Specifically, the upper hook 41 is formed by bending a strip, which increases the contact area between the upper hook 41 and the mating part 3. Furthermore, an anti-slip pad is provided at the contact position between the upper hook 41 and the mating part 3, thereby improving the stability of the upper hook 41.

[0033] The fixing block can be welded to a specific position of the mating part 3, or the fixing block can be screwed to a specific position of the mating part 3, which is the position that is close to the upper hook 41.

[0034] In an optional embodiment, the power assembly includes: a water supply hose 5 connected to the annular pipe 1; and a water pump 6 for delivering water to the annular pipe 1 via the water supply hose 5. The water pump 6 is an electric diaphragm pump. The water pump 6 pressurizes the water in the water tank, which is then atomized by the nozzle 2, releasing tiny water mist particles.

[0035] In one example, the electric diaphragm pump has a power of 200W and an operating pressure of 1-1.5MPa, which can be flexibly adjusted according to the height of tunnel 7 and the suspension position. The water supply hose 5 is made of PU material, with a diameter of 5cm, and connects smoothly from the water source to the spray device.

[0036] Tunnel 7 often uses settled construction wastewater or groundwater, which may contain small amounts of silt. Diaphragm pumps do not have precision impellers, have low requirements for media cleanliness, and are not prone to clogging or wear. Electric diaphragm pumps are compact in structure and easy to install. They can be directly fixed to the trolley chassis or side frame and move with the trolley as a whole, without the need for an additional foundation.

[0037] Furthermore, the power assembly is provided in two sets, and is symmetrically arranged about the axis of symmetry of the annular pipe 1.

[0038] Single-sided water supply can easily lead to insufficient water pressure and poor atomization in nozzles 2 that are far from the inlet. Symmetrical water supply from both sides allows water to enter the annular pipe 1 simultaneously from both ends, significantly reducing pressure loss along the pipe and ensuring that all nozzles 2 (especially those at the far end) achieve a consistent atomization effect. In large-diameter tunnels 7, the annular pipe 1 has a longer circumference and more nozzles 2, and a single pump may not be able to meet the total flow requirements; parallel operation of two pumps can multiply the water supply capacity, ensuring efficient coverage across the entire cross-section.

[0039] In an optional embodiment, the nozzles 2 are evenly distributed on the annular pipe 1. This facilitates comprehensive coverage of the working face and improves dust removal efficiency.

[0040] In one example, the distance between adjacent nozzles 2 is 15cm.

[0041] In an optional embodiment, the dust removal device further includes an adjustment component for adjusting the pitch angle of the nozzle 2. After the tunnel face 7 is blasted, the dust mainly concentrates in the space at a certain height and distance in front; by adjusting the pitch angle of the nozzle 2 (for example, setting it to 15° horizontally upward), the water mist can be directed towards the high-concentration dust area, avoiding the droplets from falling directly to the ground or spraying into the dust-free area; this significantly increases the contact probability between the water mist and the dust, enhancing the adsorption and sedimentation effect.

[0042] Furthermore, the adjustment assembly includes: a nozzle connecting sleeve, disposed on the annular pipe 1, the nozzle connecting sleeve having an inwardly recessed portion forming a spherical cavity; a spherical connector, including a spherical part and an outer end part connected to the spherical part, the spherical part being disposed within the spherical cavity and being rotatable relative to the spherical cavity, the outer end part being provided with external threads, the nozzle 2 being screwed to the outer end part; and a locking nut, sleeved on the outer end part and located between the nozzle 2 and the nozzle connecting sleeve; wherein, tightening the locking nut compresses the spherical connector and the nozzle connecting sleeve to frictionally lock the spray angle of the nozzle 2, and loosening the locking nut releases the locking state of the spherical connector and the nozzle connecting sleeve.

[0043] After the spherical part is embedded in the spherical cavity, it can rotate freely in any direction. It should be noted that, usually due to structural limitations, the effective adjustment range is ±15°-30°. Operators can manually adjust the nozzle 2 to the optimal spray angle (such as "15° upward from the horizontal") to accurately target areas with high dust levels. Compared with fixed nozzle 2 or single-axis adjustment structures, it provides more flexible coverage and greater adaptability. All components (nozzle connecting sleeve, spherical joint, locking nut) are standard mechanical parts or easy-to-machine parts. If a nozzle 2 is damaged, it can be disassembled and replaced individually without affecting the operation of other nozzles 2.

[0044] In an optional embodiment, the annular pipe 1 includes a water conveying section, a connecting section, and a connecting section connecting the water conveying section and the connecting section. The diameter of the water conveying section is larger than the diameter of the connecting section, and the connecting section is connected to the nozzle 2. One end of the connecting section has a large diameter, and the other end has a small diameter. The large-diameter end is connected to the water conveying section, and the small-diameter end is connected to the connecting section.

[0045] In one example, the water delivery section has a diameter of 10cm, and the connecting section has a diameter of 3cm-5cm, both made of rigid PVC pipe, which is lightweight, easy to install, and convenient to connect with the hanging component 4. The spacing of the nozzles 2 on the connecting section is 15cm. The annular pipe is slightly longer than the air duct 10 to improve airflow utilization and ensure sufficient droplet transport.

[0046] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0047] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0048] It should also be noted that in the apparatus, equipment, and housing of this application, the components or steps can be disassembled and / or reassembled. These disassemblies and / or reassemblies should be considered as equivalent solutions of this application.

[0049] The above description of the disclosed aspects is provided to enable any user of the art to make or use this application. Various modifications to these aspects will be readily apparent to users of the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0050] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0051] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A dust removal device that moves with a tunnel construction trolley, characterized in that, include: The dust collection base is installed on the tunnel construction trolley; A spray assembly for spraying water mist during tunnel construction, and includes an annular pipe and nozzles disposed on the annular pipe; The fitting assembly includes a fitting part adapted to the shape of the annular pipe, the fitting assembly being disposed on the dust removal base and used to fix the spray assembly; A power unit for supplying water to the spray assembly; The mating component includes multiple screw-connected annular components, and the annular pipe includes multiple pipe segments connected by quick connectors. By adjusting the number of the annular components and the pipe segments, as well as adjusting the installation position of the annular components and the pipe segments, the mating component and the annular pipe can be adapted to the tunnel cross-section.

2. The dust removal device that moves with the tunnel construction trolley according to claim 1, characterized in that, The mating assembly also includes a suspension member for hanging the spray assembly on the mating member, the suspension member being connected to the nozzle.

3. The dust removal device that moves with the tunnel construction trolley according to claim 2, characterized in that, The suspension component includes: The upper hook is suspended on the mating component; The first crossbeam is connected to the upper hook; The second crossbeam is connected to the nozzle via a suspension rope; A connector for connecting the first crossbeam and the second crossbeam.

4. The dust removal device that moves with the tunnel construction trolley according to claim 3, characterized in that, The upper hook is formed by bending a strip, and an anti-slip pad is provided at the contact portion between the upper hook and the mating part; and / or, The mating component is provided with fixing blocks, which are located on both sides of the upper hook.

5. The dust removal device that moves with the tunnel construction trolley according to claim 1, characterized in that, The power assembly includes: Water supply hose, connected to the annular pipe; A water pump is used to deliver water to the annular pipe through the water supply hose.

6. The dust removal device that moves with the tunnel construction trolley according to claim 5, characterized in that, The power assembly is provided in two sets, and is symmetrically arranged about the axis of symmetry of the annular pipe.

7. The dust removal device that moves with the tunnel construction trolley according to claim 1, characterized in that, The nozzles are evenly distributed on the annular pipe.

8. The dust removal device that moves with the tunnel construction trolley according to claim 1, characterized in that, It also includes an adjustment component for adjusting the pitch angle of the nozzle.

9. The dust removal device that moves with the tunnel construction trolley according to claim 8, characterized in that, The adjustment component includes: A nozzle connecting sleeve is disposed on the annular pipe, the nozzle connecting sleeve having an inwardly recessed portion, the portion forming a spherical cavity; A spherical connector includes a spherical part and an outer end part connected to the spherical part. The spherical part is disposed in the spherical cavity and can rotate up and down relative to the spherical cavity. The outer end part is provided with an external thread, and the nozzle is screwed to the outer end part. A locking nut is fitted onto the outer end portion and located between the nozzle and the nozzle connecting sleeve; Specifically, tightening the locking nut presses the ball joint and the nozzle connecting sleeve together to frictionally lock the spray angle of the nozzle, and loosening the locking nut releases the locking state of the ball joint and the nozzle connecting sleeve.

10. The dust removal device that moves with the tunnel construction trolley according to claim 1, characterized in that, The annular pipe includes a water conveying section, a connecting section, and a connecting section that connects the water conveying section and the connecting section. The diameter of the water conveying section is larger than the diameter of the connecting section, and the connecting section is connected to the nozzle.

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