Novel foldable self-moving type full-section spraying device matched behind TBM (Tunnel Boring Machine)

Abstract

The utility model discloses a novel TBM (tunnel boring machine) rear matching foldable self-moving type full-section spraying device, which belongs to the technical field of coal mine dust prevention and comprises a fixed base, a folding plate used for adjusting the spraying range is fixedly connected to one side of the fixed base, and a positioning sleeve is fixedly mounted at one end, far away from the fixed base, of the folding plate. A spraying main pipeline used for conveying air and flowing water is fixedly connected into the positioning sleeve, a spraying rotating disc is rotationally installed at one end of the spraying main pipeline, a plurality of sets of nozzles used for spraying and dust falling are fixedly installed on the outer wall of the spraying rotating disc, and the air and the flowing water are conveyed into the spraying rotating disc through the spraying main pipeline, so that the full-section atomization effect is achieved; a fixing structure used for limiting the rotating angle of the folding plate is fixedly installed in the folding plate, an inner cavity of the spray head is fixedly connected with an auxiliary structure used for expanding the water mist spraying range, and through the folding plate and the fixing structure, the spraying device can be rapidly folded and steered during transportation of the monorail crane, and continuous spraying during tunneling is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of coal mine dust control technology, specifically a new type of foldable self-moving full-section spray device for TBM. Background Technology

[0002] TBM tunneling plays a crucial role in tunnel construction. However, during tunnel excavation, a large amount of dust is stirred up, causing a sharp increase in dust concentration in the construction space. The pervasive dust not only seriously threatens the health of construction workers, and long-term exposure can easily lead to serious occupational diseases such as pneumoconiosis, but also poses a great safety hazard. When the dust concentration reaches a certain level, it may cause major safety accidents such as explosions.

[0003] For example, the main roadway of the west section uses a full-face open TBM for tunneling construction. Four trolleys are arranged behind the main machine. The trolleys are 48m long. The trolleys are not designed with a roadway dust suppression spray structure or installation position. According to relevant construction safety specifications, in order to effectively control dust hazards, a full-face dust suppression spray needs to be installed 50m away from the working face to help create a safe and healthy tunnel construction environment.

[0004] Therefore, based on the above retrieval and combined with existing methods, traditional tunnel excavation spraying uses arc-shaped steel pipes fixed to the tunnel roof. The spraying equipment needs to be manually moved along with the work surface. Due to space limitations, the spraying equipment needs to be manually dismantled during monorail lifting to meet passage requirements. Furthermore, dust suppression cannot be continuously maintained during dismantling, resulting in dust accumulation on the excavation surface, worsening the working environment. Frequent dismantling and reassembly increase the burden on workers working at heights, and leaks of water and air are easily caused by loose bolts and seal failure. In addition, the spraying angle needs to be adjusted after reinstallation, which may result in uneven atomization and affect the dust removal effect across the entire cross-section. Utility Model Content

[0005] The purpose of this invention is to provide a novel foldable, self-moving, full-section spraying device for TBMs, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A novel foldable, self-moving, full-section spraying device for TBM rear-mounted systems includes a fixed base with a long bolt for auxiliary installation inserted into its internal threads. A folding plate for adjusting the spraying range is fixedly connected to one side of the fixed base. A positioning sleeve is fixedly installed at the end of the folding plate away from the fixed base. A main spraying pipeline for conveying air and water is fixedly connected inside the positioning sleeve. A spraying disc is rotatably mounted at one end of the main spraying pipeline. Multiple sets of nozzles for dust suppression are fixedly installed on the outer wall of the spraying disc. Air and water are conveyed into the spraying disc through the main spraying pipeline, achieving air-water coordinated spraying in the TBM's circular tunnels and achieving full-section atomization.

[0008] The folding plate is fixedly installed with a fixing structure for limiting the rotation angle of the folding plate, and the nozzle is fixedly connected with an auxiliary structure for expanding the water mist spray range.

[0009] As a further embodiment of this utility model, the fixing structure includes a positioning clamp tube, which is fixedly installed inside the folding plate. A movable clamp tube is fixedly connected to the top of the positioning clamp tube, and the movable clamp tube is slidably installed inside the folding plate. A pusher is fixedly connected to the top of the movable clamp tube for pushing the movable clamp tube downward. A serrated block is provided at one end of each of the positioning clamp tube and the movable clamp tube, and the two are engaged with each other through the serrated blocks, thereby limiting the rotation angle of the folding plate and preventing it from loosening at will.

[0010] As a further embodiment of this utility model, a threaded sleeve is fixedly installed on the top surface of the folding plate, and a pusher is threadedly inserted into the inside of the threaded sleeve. A pusher block is fixedly connected to the bottom end of the pusher block, and the pusher block is in contact with the top surface of the movable card tube.

[0011] As a further embodiment of this utility model, a reset spring for pushing the moving card tube upward and resetting is fixedly connected inside the positioning card tube, and the top end of the reset spring is fixedly connected to the inside of the moving card tube.

[0012] As a further embodiment of this utility model, the auxiliary structure includes a spray pipe, one end of which is fixedly installed on the outer wall of the spray turntable, and the other end of which is rotatably connected to the nozzle. A connecting frame is fixedly connected to the inner cavity of the spray pipe, and a rotating blade for providing rotational power to the nozzle is ball-hinged at the axis of the connecting frame.

[0013] As a further embodiment of this invention, a perforated plate for forming water mist is fixedly installed at the end of the rotating blade away from the connecting frame, and the perforated plate is fixedly connected to the inner wall of the nozzle.

[0014] As a further solution of the utility model, the auxiliary structure further includes a connecting pipe. One end of the connecting pipe is fixedly connected to the main spray pipeline, and the other end thereof is rotatably connected to the spray turntable. A rotating rod for driving the spray turntable to rotate is rotatably installed in the inner cavity of the connecting pipe, and one end of the rotating rod is fixedly connected to the inner wall of the spray turntable. A driving blade for providing rotational power is fixedly sleeved on the outer wall of the rotating rod.

[0015] As a further solution of the utility model, an air inlet pipe for injecting air is fixedly connected to the bottom end of the main spray pipeline, and a water inlet pipe for injecting running water is fixedly connected to one side of the bottom of the main spray pipeline.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. When the utility model is in use, by means of the fixing base and the long bolts, the device is firmly installed on the first set of floating wheels of the TBM trailing support suspension train, realizing automatic forward movement following the equipment, avoiding frequent manual relocation, improving the construction efficiency, reducing the safety risk of workers working at height. With the cooperation of the folding hinge plate and the self-locking fixing structure, the spray device can be quickly folded and turned during monorail hoist transportation without manual disassembly and assembly, ensuring continuous spraying during tunneling, guaranteeing the smoothness of the monorail hoist beam transportation passage. By using the positioning clamping pipe and the moving clamping pipe to engage with each other through the serrated blocks, the rotation angle of the hinge plate is effectively limited, preventing the hinge plate from loosening randomly, and ensuring the stable operation of the spray device under different working conditions.

[0018] 2. When the utility model is in use, through the air-water linkage design, air and water enter the main spray pipeline through the air inlet pipe and the water inlet pipe, driving the spray turntable and the nozzles to rotate, realizing 360-degree full-section atomization, effectively reducing the dust concentration in the roadway, improving the on-site air quality, ensuring the respiratory health of workers, reducing the risk of occurrence of occupational diseases such as pneumoconiosis. In a working roadway with a relatively high temperature, it can effectively reduce the temperature in the roadway and improve the thermal comfort of the working environment. The use of full-section air-water linkage spraying can adsorb and settle harmful gases and impurities in the roadway air, reduce peculiar smell, make the air fresher, and can also increase the air humidity, suppressing the occurrence and spread of fires to a certain extent and playing a good fire-fighting role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a new type of foldable self-moving full-section spray device for TBM trailing support.

[0020] Figure 2 It is a rear view of the overall structure of a new type of foldable self-moving full-section spray device for TBM trailing support.

[0021] Figure 3This is an exploded view of the fixed structure in a novel TBM-equipped foldable self-moving full-section spraying device.

[0022] Figure 4 A cross-sectional view of the auxiliary structure in a novel TBM-mounted foldable self-moving full-section spraying device. Figure 1 .

[0023] Figure 5 A cross-sectional view of the auxiliary structure in a novel TBM-mounted foldable self-moving full-section spraying device. Figure 2 .

[0024] In the diagram: 1. Fixed base; 2. Folding plate; 3. Positioning sleeve; 4. Main spray pipe; 5. Spray turntable; 6. Nozzle; 201. Positioning clamp; 202. Moving clamp; 203. Push bolt; 204. Threaded sleeve; 205. Push block; 206. Knob; 207. Slider; 208. Return spring; 601. Spray pipe; 602. Spiral plate; 603. Connecting frame; 604. Rotating blade; 605. Orifice plate; 606. Connecting pipe; 607. Rotating rod; 608. Drive blade; 609. Fixed frame; 8. Air inlet pipe; 9. Water inlet pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1 , Figure 2 , Figure 4 A novel foldable self-moving full-section spraying device for TBM rear-mounted equipment includes a fixed base 1. The fixed base 1 has a long bolt for auxiliary fixing of the installation device inserted into its internal thread. A folding plate 2 for adjusting the spraying range is fixedly connected to one side of the fixed base 1. A positioning sleeve 3 is fixedly installed at the end of the folding plate 2 away from the fixed base 1. A spray main pipeline 4 for conveying air and water is fixedly connected inside the positioning sleeve 3. A spray turntable 5 is rotatably installed at one end of the spray main pipeline 4 via a bearing. Multiple sets of nozzles 6 for dust suppression are fixedly installed on the outer wall of the spray turntable 5. Air and water are conveyed into the spray turntable 5 through the spray main pipeline 4, realizing air and water linkage spraying in the TBM circular tunnel and achieving full-section atomization effect.

[0027] The folding plate 2 is fixedly installed with a fixing structure for limiting the rotation angle of the folding plate 2, and the nozzle 6 is fixedly connected with an auxiliary structure for expanding the water mist spray range.

[0028] Specifically, the west section conveyor belt tunnel is constructed using a full-section open-face TBM. Four trolleys are arranged behind the main unit. Seven sets of load-bearing floating wheels are installed on the monorail suspension beam of the rear-mounted suspension train between the main unit trolley and the rear-mounted suspension train. The fixed base 1 is fixed to the left side of the first set of floating wheels with long bolts, so that the subsequent floating wheels of the device can move forward on their own. At the same time, through the cooperation between the folding plate 2 and the fixed structure, the direction of the main spray pipeline 4 is changed from horizontal to vertical. No manual removal is required, so as to realize the spray dust suppression operation at all times and ensure that the monorail can be folded and pass through unobstructed during transportation.

[0029] More specifically, the positioning sleeve 3 is made of steel pipe with a diameter of DN20, the spray disc 5 is set as a cylinder with a diameter of 200mm, and there are nine sets of nozzles 6 that are symmetrically and evenly distributed on the outer surface of the spray disc 5. Each nozzle 6 is made of stainless steel.

[0030] Please see Figure 1 , Figure 3 , Figure 5 The fixing structure includes a positioning clamp tube 201, which is fixedly installed inside the folding plate 2. A movable clamp tube 202 is fixedly connected to the top of the positioning clamp tube 201. The movable clamp tube 202 is slidably installed inside the folding plate 2. A pusher 203 for pushing the movable clamp tube 202 downward is fixedly connected to the top of the movable clamp tube 202. A serrated block is provided at one end of each of the positioning clamp tube 201 and the movable clamp tube 202, and the two are engaged with each other through the serrated blocks, thereby limiting the rotation angle of the folding plate 2 and preventing it from loosening at will.

[0031] Specifically, the folding plate 2 consists of two sets of rotating plates. One set of rotating plates is fixedly connected to the fixed base 1, and the positioning tube 201 is fixedly installed inside it. The other set of rotating plates is fixedly connected to the positioning sleeve 3, and the moving tube 202 is slidably installed inside it.

[0032] A threaded sleeve 204 is fixedly installed on the top surface of the folding plate 2, and a pusher 203 is threadedly inserted into the inside of the threaded sleeve 204. The bottom end of the pusher 203 is fixedly connected to a pusher block 205 through a bearing, and the pusher block 205 is in contact with the top surface of the movable clamp tube 202.

[0033] Specifically, the inner cavity of the threaded sleeve 204 is provided with a threaded groove corresponding to the pusher 203, and the pusher 203 is located in the threaded groove. The top of the pusher 203 passes through the threaded sleeve 204 and is fixedly connected to a knob 206.

[0034] More specifically, the threaded sleeve 204 has a moving groove inside for providing the push block 205 to move up and down, and the push block 205 is located in the moving groove;

[0035] Multiple sliders 207 are fixedly installed on the outer wall of the movable card tube 202 to ensure the smooth movement of the movable card tube 202. The interior of the folding plate 2 is provided with a sliding groove for the sliders 207 to slide, and the sliders 207 are located in the sliding groove.

[0036] Specifically, the slider 207 ensures that the moving clamp tube 202 moves smoothly downward, effectively preventing the rotating plate sleeved on the outer wall of the moving clamp tube 202 from rotating arbitrarily, thereby limiting the rotation angle of the folding plate 2.

[0037] The positioning tube 201 has a fixed internal connection to a reset spring 208 for pushing the moving tube 202 upward to reset, and the top end of the reset spring 208 is fixedly connected to the inside of the moving tube 202.

[0038] Example 2: Please refer to Figure 1 , Figure 3 , Figure 5 Based on Embodiment 1, the auxiliary structure includes a spray pipe 601. One end of the spray pipe 601 is fixedly installed on the outer wall of the spray turntable 5, and the other end of the spray pipe 601 is rotatably connected to the nozzle 6. A spiral plate 602 for guiding the water flow rotation is fixedly installed on the inner wall of the spray pipe 601. A connecting frame 603 is fixedly connected to the inner cavity of the spray pipe 601. A rotating blade 604 for providing rotational power to the nozzle 6 is ball-hinged at the axis of the connecting frame 603.

[0039] A perforated plate 605 for forming water mist is fixedly installed at the end of the rotating blade 604 away from the connecting frame 603, and the perforated plate 605 is fixedly connected to the inner wall of the nozzle 6.

[0040] Specifically, the inner wall of the nozzle 6 is fixedly equipped with a protrusion to prevent the nozzle 6 from slipping, and the outer wall of the spray pipe 601 is provided with an outer groove for providing rotation of the protrusion, and the protrusion is located in the outer groove.

[0041] More specifically, a connecting shaft is installed between the connecting frame 603 and the orifice plate 605. One end of the connecting shaft is fixedly connected to the orifice plate 605, and the other end is ball-jointed to the connecting frame 603. The rotating blade 604 is fixedly sleeved on the outer wall of the connecting shaft. The water flow entering the spray pipe 601 is guided to rotate by the spiral plate 602. The rotating water flow drives the rotating blade 604 to rotate, which in turn causes the orifice plate 605 to drive the nozzle 6 to rotate. This effectively expands the coverage of the water mist, allowing the water mist to mix fully with the dust in the air, quickly condense into large water droplets and settle, improve the dust removal effect of the device, and thus ensure air quality.

[0042] The auxiliary structure also includes a connecting pipe 606, one end of which is fixedly connected to the main spray pipeline 4, and the other end of which is rotatably connected to the spray turntable 5. A rotating rod 607 for driving the spray turntable 5 to rotate is rotatably installed in the inner cavity of the connecting pipe 606, and one end of the rotating rod 607 is fixedly connected to the inner wall of the spray turntable 5. A drive blade 608 for providing rotational power is fixedly sleeved on the outer wall of the rotating rod 607.

[0043] Specifically, a fixing bracket 609 is fixedly installed on the inner wall of the connecting pipe 606, and the end of the rotating rod 607 away from the spray disc 5 is rotatably connected to the fixing bracket 609 through a bearing.

[0044] Please see Figure 1 , Figure 3 , Figure 5 The bottom end of the spray main pipeline 4 is fixedly connected to an air inlet pipe 8 for injecting air, and the bottom side of the spray main pipeline 4 is fixedly connected to a water inlet pipe 9 for injecting water.

[0045] Specifically, the main spray pipe 4 is a steel pipe with a diameter of DN15 and a vertical length of 500mm. It has a 90° bend at the top to form a horizontal pipe with a horizontal length of 1800mm. The bottom of the main spray pipe 4 is fixedly connected to the air inlet pipe 8 by welding a 25mm diameter high-pressure hose connector. 50mm above the bottom of the main spray pipe 4, it is fixedly connected to the water inlet pipe 9 by welding a 10mm diameter high-pressure hose connector. The air inlet pipe 8 and the water inlet pipe 9 are respectively fixedly installed with air valves and water valves. During normal operation, the air and water valves are opened simultaneously to achieve air-water linkage spraying operation and achieve full-section atomization effect.

[0046] The working principle of this utility model is as follows:

[0047] First, the fixed base 1 is fixedly installed by long bolts. External air and water enter the spray main pipeline 4 through the air inlet pipe 8 and water inlet pipe 9 respectively. At the same time, the air and water valves are opened to allow air and water to enter the spray main pipeline 4 at the same time, so as to realize the air and water linkage spray operation.

[0048] Simultaneously, the air and water flow in the main spray pipe 4 drives the impeller 608 to rotate, thereby driving the spray turntable 5 to rotate. At the same time, the spiral plate 602 in the spray pipe 601 on the spray turntable 5 guides the air and water flow. The rotating water flow drives the rotating blade 604 to rotate, which in turn causes the orifice plate 605 to drive the nozzle 6 to rotate, realizing the rotating spray of the nozzle 6. In conjunction with the orifice plate 605 cutting water droplets, the coverage of the water mist is effectively expanded, allowing the water mist to fully mix with the dust in the air, quickly condense into large water droplets and settle, achieving a full-section atomization effect and improving the dust removal effect of the device.

[0049] Finally, when the direction of the spray main pipeline 4 needs to be adjusted, rotating the knob 206 drives the pusher 203 to rotate, which, in conjunction with the reset spring 208, pushes the moving clamp tube 202 upward to reset, allowing the folding plate 2 to rotate at the new angle. Reverse rotation of the knob 206 drives the pusher 203 to rotate and move downward within the threaded sleeve 204, using the push block 205 to push the moving clamp tube 202 downward, causing the serrated block on the moving clamp tube 202 and the positioning clamp tube 201 to mesh with each other, thereby limiting the rotation angle of the folding plate 2. At the same time, the slider 207 on the outer wall of the moving clamp tube 202 follows the downward movement of the moving clamp tube 202 and slides within the sliding groove of the folding plate 2, ensuring that the moving clamp tube 202 moves smoothly and preventing the folding plate 2 from rotating arbitrarily.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel foldable, self-moving full-section spraying device for TBM rear-mounted systems, comprising a fixed base (1), characterized in that, The fixed base (1) has a long bolt for assisting in fixing the installation device inserted into its internal thread. A folding plate (2) for adjusting the spray range is fixedly connected to one side of the fixed base (1). A positioning sleeve (3) is fixedly installed at the end of the folding plate (2) away from the fixed base (1). A spray main pipeline (4) for conveying air and water is fixedly connected inside the positioning sleeve (3). A spray turntable (5) is rotatably installed at one end of the spray main pipeline (4). Multiple sets of nozzles (6) for spraying dust suppression are fixedly installed on the outer wall of the spray turntable (5). Air and water are conveyed into the spray turntable (5) through the spray main pipeline (4) to realize the air-water linkage spray of the TBM circular tunnel and achieve the full-section atomization effect. The folding plate (2) is fixedly installed with a fixing structure for limiting the rotation angle of the folding plate (2), and the nozzle (6) is fixedly connected with an auxiliary structure for expanding the water mist spray range.

2. The novel TBM-mounted foldable self-moving full-section spraying device according to claim 1, characterized in that, The fixing structure includes a positioning clamp tube (201), which is fixedly installed inside the folding plate (2). A movable clamp tube (202) is fixedly connected to the top of the positioning clamp tube (201). The movable clamp tube (202) is slidably installed inside the folding plate (2). A pusher (203) for pushing the movable clamp tube (202) downward is fixedly connected to the top of the movable clamp tube (202). A serrated block is provided at one end of the positioning clamp tube (201) and the movable clamp tube (202), and the two are meshed with each other through the serrated blocks, thereby limiting the rotation angle of the folding plate (2) and preventing it from loosening at will.

3. A novel foldable, self-propelled full-section spraying device for TBMs according to claim 2, characterized in that, A threaded sleeve (204) is fixedly installed on the top surface of the folding plate (2), and a pusher (203) is threadedly inserted into the inside of the threaded sleeve (204). A pusher (205) is fixedly connected to the bottom end of the pusher (203), and the pusher (205) is in contact with the top surface of the movable card tube (202).

4. A novel foldable, self-propelled full-section spraying device for TBMs according to claim 2, characterized in that, The positioning tube (201) is internally fixedly connected to a reset spring (208) for pushing the moving tube (202) upward to reset, and the top end of the reset spring (208) is fixedly connected to the inside of the moving tube (202).

5. A novel foldable, self-propelled full-section spraying device for TBMs according to claim 1, characterized in that, The auxiliary structure includes a spray pipe (601), one end of which is fixedly installed on the outer wall of the spray turntable (5), and the other end of which is rotatably connected to the nozzle (6). A connecting frame (603) is fixedly connected to the inner cavity of the spray pipe (601), and a rotating blade (604) for providing rotational power to the nozzle (6) is ball-jointed at the axis of the connecting frame (603).

6. A novel foldable, self-propelled full-section spraying device for TBMs according to claim 5, characterized in that, The rotating blade (604) is fixedly mounted with a perforated plate (605) for forming water mist at one end away from the connecting frame (603), and the perforated plate (605) is fixedly connected to the inner wall of the nozzle (6).

7. A novel foldable, self-propelled full-section spraying device for TBMs according to claim 5, characterized in that, The auxiliary structure also includes a connecting pipe (606), one end of which is fixedly connected to the main spray pipeline (4), and the other end of which is rotatably connected to the spray turntable (5). The inner cavity of the connecting pipe (606) is rotatably equipped with a rotating rod (607) for driving the spray turntable (5) to rotate, and one end of the rotating rod (607) is fixedly connected to the inner wall of the spray turntable (5). The outer wall of the rotating rod (607) is fixedly sleeved with a drive blade (608) for providing rotational power.

8. A novel foldable, self-propelled full-section spraying device for TBMs according to claim 1, characterized in that, The bottom end of the main spray pipeline (4) is fixedly connected to an air inlet pipe (8) for injecting air, and the bottom side of the main spray pipeline (4) is fixedly connected to a water inlet pipe (9) for injecting water.

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