Tunnel face gushing water plugging device

Abstract

The invention belongs to the technical field of tunnel gushing water plugging, and particularly relates to a tunnel face gushing water plugging device which comprises a protection box, a U-shaped fixing frame is installed on one side of an inner cavity of the protection box, a worm gear is rotationally connected to an inner cavity of the U-shaped fixing frame, a telescopic assembly is fixedly connected to the outer portion of the worm gear, and a plugging assembly is installed at the end, away from the worm gear, of the telescopic assembly. The plugging assembly comprises a rotating block rotationally connected to one end of the telescopic assembly, a supporting plate is fixedly connected to one end of the rotating block, a rubber ring is fixedly connected outside one end face of the supporting plate, and a rubber layer is fixedly connected to the inner wall of the rubber ring; a water inlet cylinder is installed in one end of the supporting plate, a sliding column is slidably connected to an inner cavity of the water inlet cylinder, a sealing disc is fixedly connected to one end of the sliding column, and a sealing ring is fixedly connected to the inner wall of the water inlet cylinder. The problem that due to the fact that an existing plugging device is difficult to be completely inserted into a water gushing hole of the tunnel face and cracks communicated with the water gushing hole, after plugging of the water gushing position of the tunnel face is completed, gushing water still seeps out through the cracks is solved.

Description

Technical Field

[0001] This invention belongs to the field of tunnel water inrush sealing technology, specifically a tunnel face water inrush sealing device. Background Technology

[0002] The working face, also known as the tunnel face, is the advancing working face in tunnel construction. It's a professional term in underground engineering such as mining and tunneling, named for its narrow, "palm-sized" working area. The term has since been extended to various underground engineering projects. Water inrush, also known as sudden water inrush, occurs during tunnel construction, particularly when passing through areas with developed karst caves, especially underground river systems, thick layers of water-bearing gravel, and large fractured zones connected to surface water. This sudden and large-scale water inrush poses a significant threat to underground engineering construction; therefore, sealing devices are needed to contain it when it occurs.

[0003] A patent with publication number CN120312281A discloses a tunnel fault inrush water sealing device. This device, through the ingenious cooperation of components such as a slider, rectangular rod, hinge seat, connecting rod, long plate and sealing plate body, not only provides support for the sealing plate body and improves the sealing effect, but also allows the relevant components to be retracted when not in use, reducing space occupation and the probability of contact, and extending the service life of the sealing plate. Moreover, the sealing plate body has a certain degree of elastic deformation, and the long plate also has a certain bending deformation capacity and strength, allowing the sealing plate to better adapt to the sealing position. The design of the push rod and shield not only protects the hinged part between the push rod and the vertical plate, preventing dust in the tunnel from affecting its service life, but also allows the related components to move through the power motor, bringing the sealing plate closer to the sealing position and improving the sealing effect. The two highly elastic torsion springs set at the hinge joint between the hinge seat and the long plate effectively prevent the long plate and the sealing plate from sagging due to gravity, and also allow the sealing plate to adapt to the curves in the tunnel and better fit the water inflow area, further improving the sealing effect. The long plate is made of lightweight aluminum alloy, which reduces the overall weight while ensuring a certain strength and deformation capacity, which is beneficial for sealing operations.

[0004] However, the above solution still has the following problems in practical application: 1. Although deformable sealing plates are used to seal the water inflow points, the pressure applied to the sealing plates by the push plate causes them to deform in order to enhance their fit with the water inflow points. If there are grooves and connecting extended cracks at the water inflow points, the deformation of the sealing plates is often difficult to effectively insert into the cracks, resulting in the inability to fully seal the cracks and grooves, thus causing water inflow to still occur in the tunnel wall.

[0005] 2. The push plate relies solely on the torsion spring to prevent sagging. However, the torsion direction of the torsion spring is opposite to the operating direction. When the push plate is against the tunnel wall, if the push plate flips to the right, the water pressure will push it to the left. At this time, the push plate can easily flip to the left with the help of the torsion spring torque, thus affecting the sealing effect at the water inflow location. Conversely, if the push plate flips to the left and the water pressure pushes it to the right, the push plate can still easily flip to the right under the combined action of water pressure and torsion spring torque, leading to water seepage. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a device for sealing water inrush at the tunnel face. The technical solution adopted by the present invention to solve its technical problems is as follows: A device for sealing water inrush at the tunnel face includes a protective box. A U-shaped fixing frame is installed on one side of the inner cavity of the protective box. A worm gear is rotatably connected to the inner cavity of the U-shaped fixing frame. A telescopic component is fixed to the outside of the worm gear. A sealing component is installed at the end of the telescopic component away from the worm gear. The sealing assembly includes a rotating block rotatably connected to one end of the telescopic assembly. A support plate is fixedly connected to one end of the rotating block. A rubber ring is fixedly connected to the outer side of one end face of the support plate. A rubber layer is fixedly connected to the inner wall of the rubber ring. A water inlet cylinder is installed inside one end of the support plate. A sliding column is slidably connected to the inner cavity of the water inlet cylinder. A sealing disc is fixedly connected to one end of the sliding column. A sealing ring is fixedly connected to the inner wall of the water inlet cylinder. The water inlet cylinder is used to receive the water gushing from the working face, allowing the water to enter the rubber ring through the water inlet cylinder, and compress the rubber layer to deform and insert into the water gushing holes and cracks in the working face for sealing.

[0007] Preferably, a filter screen is fixedly connected to the inner cavity of the water inlet cylinder, a plug is fixedly connected to one end of the sealing disc, the plug is inserted into the inside of the rotating block, a spring is fixedly connected to one end of the sealing disc, and one end of the spring abuts against the inner cavity of the rotating block, and the inner cavity of the rotating block communicates with the inner cavity of the rubber ring through a through hole.

[0008] Preferably, a fixing block is fixedly connected to the bottom of the inner cavity of the protective box, a rotating shaft is rotatably connected to one side of the fixing block, a worm is fixedly connected to the outside of the rotating shaft, and the worm is meshed with a worm wheel. The end of the rotating shaft away from the fixing block passes through the protective box and is fixedly connected to a crank handle.

[0009] Preferably, the upper two sides of the protective box are rotatably connected to a box cover, a bracket is installed at the bottom of the inner cavity of the protective box, and a drainage hole is opened on the inner wall of the protective box for draining water from the tunnel that enters the inner cavity of the protective box.

[0010] Preferably, the telescopic assembly includes a support rod fixed to the outside of the worm gear, an adjusting rod slidably connected to the outside of the support rod, one end of the adjusting rod having a U-shaped structure, and the U-shaped structure at one end of the adjusting rod being rotatably connected to the rotating block.

[0011] Preferably, a storage groove is provided at one end of the support rod, and a threaded rod is rotatably connected to the inner cavity of the storage groove. A telescopic rod is threadedly connected to the outside of the threaded rod, and the telescopic rod is fixedly connected to the inner wall of the adjusting rod.

[0012] Preferably, the support rod has a transmission groove inside, and a U-shaped rotating shaft is rotatably connected to the inner cavity of the transmission groove. A driven bevel gear is fixedly connected to the outside of the U-shaped rotating shaft. The driven bevel gear is meshed with a transmission bevel gear, and the transmission bevel gear is rotatably connected to the support rod. The inner cavity of the U-shaped rotating shaft is inserted into a threaded rod.

[0013] Preferably, a rotating groove is provided in the U-shaped structure at one end of the adjusting rod, and gears are fixedly connected to both sides of the rotating block. The gears are inserted into the rotating groove, and an elastic tooth block is fixedly connected to the inner wall of the rotating groove, and the elastic tooth block is inserted and meshed with the gear.

[0014] Preferably, universal wheels are installed at the four corners of the lower end face of the protective box, and a fixing component is provided in the lower end cavity of the protective box. The fixing component includes a push plate that is slidably connected in the lower end cavity of the protective box, and multiple fixing cones are fixedly connected to the lower end of the push plate.

[0015] Preferably, support blocks are fixedly connected to both sides of the upper end of the push plate, a connecting rod is fixedly connected to the inner cavity of the support block, a push rod is rotatably connected to the outside of the connecting rod, a slider is rotatably connected to the end of the push rod away from the connecting rod, and a bidirectional threaded rod is threadedly connected to the two sliders, and the bidirectional threaded rod is rotatably connected to the lower inner cavity of the protective box.

[0016] The beneficial effects of this invention are as follows: 1. The tunnel face water inrush sealing device of the present invention involves moving the protective box to the water inrush point, then driving the worm gear to rotate the telescopic assembly for angle adjustment. Simultaneously, the telescopic assembly pushes the support plate to bring the rubber ring into contact with the tunnel face. As the telescopic assembly continues to extend and retract, it applies pressure to the support plate, causing the support plate to push the rubber ring to deform according to the tunnel face, thus covering the water inrush point. When the rubber ring covers the water inrush point, the sliding column abuts against the tunnel face, pushing the sealing disc. The water inlet is opened by sliding into the inner cavity of the rotating block, allowing the water gushing from the working face to enter the inner cavity of the rubber ring through the water inlet. At the same time, the pressure of the water gushing from the working face acts on the rubber layer, causing it to deform under the water pressure. After the rubber layer deforms, it inserts into the water gushing hole and its extended cracks on the working face, thereby achieving an effective seal on the water gushing hole and the cracks connected to it. This measure can prevent a large amount of water seepage from occurring after the water gushing from the working face has been sealed because the cracks connected to the water gushing hole have not been sealed.

[0017] 2. The tunnel face water inrush sealing device of the present invention, before the telescopic component drives the rotating block to drive the support plate to seal the water inrush point at the tunnel face, the adjusting rod can push the support plate to fit tightly against the surface of the water inrush point at the tunnel face. At this time, the support plate will automatically flip to adjust to the optimal fitting angle. During the rotation of the support plate, it will drive the rotating block to rotate together, thereby causing the rotating block to drive the gear to squeeze the elastic tooth block to rotate and adjust the angle. After the angle is adjusted, the elastic tooth block pops up and inserts into the tooth groove of the gear for fixation. This can effectively prevent the pressure of the water inrush at the tunnel face from impacting and flipping the support plate, which would make it difficult for the support plate to effectively seal the water inrush point at the tunnel face. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention from a first perspective; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from a second perspective; Figure 3 This is a half-sectional structural diagram of the sealing component in this invention; Figure 4 This is a half-sectional structural diagram of the telescopic component in this invention; Figure 5 This is a schematic diagram of the assembly structure of the U-shaped rotating shaft in this invention; Figure 6 This is a three-dimensional structural diagram of the present invention from a third-person perspective; Figure 7 This is a schematic diagram of a half-section of the protective box in this invention; Figure 8 This is an exploded structural diagram of the gear and adjusting rod in this invention; In the picture: 1. Protective box; 2. Casters; 3. U-shaped fixing bracket; 4. Telescopic assembly; 41. Support rod; 42. Telescopic rod; 43. Threaded rod; 44. Adjusting rod; 45. Storage slot; 5. Sealing assembly; 51. Rotating block; 52. Support plate; 53. Rubber ring; 54. Rubber layer; 55. Water inlet cylinder; 56. Sliding column; 57. Sealing disc; 58. Sealing ring; 59. Insert column; 510. Spring; 6. Lid; 7. Crank handle; 8. Bracket; 9. Fixing component; 91. Two-way threaded rod; 92. Push plate; 93. Slider; 94. Push rod; 95. Support block; 96. Connecting rod; 10. Rotating shaft; 11. Fixed block; 12. Worm; 13. Fixed cone; 14. Worm wheel; 15. Transmission bevel gear; 16. Driven bevel gear; 17. Transmission groove; 18. U-shaped rotating shaft; 19. Rotating groove; 20. Gear; 21. Elastic tooth block. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: As Figures 1 to 8 As shown, an embodiment of the present invention provides a tunnel face water inrush sealing device, including a protective box 1, a U-shaped fixing frame 3 installed on one side of the inner cavity of the protective box 1, a worm gear 14 rotatably connected to the inner cavity of the U-shaped fixing frame 3, a telescopic component 4 fixedly connected to the outside of the worm gear 14, and a sealing component 5 installed at the end of the telescopic component 4 away from the worm gear 14. The sealing component 5 includes a rotating block 51 rotatably connected to one end of the telescopic component 4. A support plate 52 is fixedly connected to one end of the rotating block 51. A rubber ring 53 is fixedly connected to the outer side of one end face of the support plate 52. A rubber layer 54 is fixedly connected to the inner wall of the rubber ring 53. A water inlet cylinder 55 is installed inside one end of the support plate 52. A sliding column 56 is slidably connected to the inner cavity of the water inlet cylinder 55. A sealing disc 57 is fixedly connected to one end of the sliding column 56. A sealing ring 58 is fixedly connected to the inner wall of the water inlet cylinder 55. The water inlet cylinder 55 is used to receive the water gushing from the working face, allowing the water to enter the rubber ring 53 through the water inlet cylinder 55, and compress the rubber layer 54 to deform and insert into the water gushing holes and cracks of the working face for sealing.

[0022] When sealing water inflow at the tunnel face, the protective box 1 is moved to the water inflow point. Then, the worm gear 14 drives the telescopic assembly 4 to rotate for angle adjustment. Simultaneously, the telescopic assembly 4 extends and retracts, pushing the support plate 52. This causes the support plate 52 to bring the rubber ring 53 into contact with the tunnel face. As the telescopic assembly 4 continues to extend and retract, it applies pressure to the support plate 52, causing the support plate 52 to push the rubber ring 53 to deform according to the tunnel face, thus covering the water inflow point. While the support plate 52 pushes the rubber ring 53 to cover the water inflow point, the sliding column 56 abuts against the tunnel face, pushing the sealing disc 57 to slide into rotation. In the inner cavity of block 51, the sealing disc 57 and the sealing ring 58 are disengaged, thereby opening the water inlet cylinder 55 and allowing the water gushing from the working face to enter the inner cavity of the water inlet cylinder 55. Then, through the water inlet cylinder 55, it enters the inner cavity of the rubber ring 53 via the inner cavity of the rotating block 51. At the same time, the pressure of the water gushing from the working face acts on the rubber layer 54, causing it to deform under the water pressure. After the rubber layer 54 is deformed, it inserts into the water gushing hole and its extended cracks in the working face, thereby achieving effective sealing of the water gushing hole and the cracks connected to it. This measure can prevent the phenomenon of large-scale water seepage due to the cracks connected to the water gushing hole not being sealed after the water gushing from the working face is sealed.

[0023] The drainage holes on the side wall of the protective box 1 can be covered with a dustproof and splashproof grille or filter, which allows for drainage while preventing large pieces of rock from intruding. Furthermore, the transmission components, such as the drive bevel gear 15 and the driven bevel gear 16, are coated with long-lasting grease and can be fitted with sealing covers depending on the actual usage, ensuring reliable operation even in harsh tunnel environments.

[0024] The rubber layer 54 is made of ultra-high elasticity, low hardness (such as Shore A hardness 30-50) closed-cell foam rubber or water-swellable rubber material, so that when water flows into the internal cavity of the rubber ring 53 at the working face, the water pressure is evenly applied to the entire inner surface of the rubber layer 54. Figure 3 As shown, it forces it to undergo isotropic expansion deformation. This expansion force from the inside out is much greater than the deformation generated by external mechanical compression, enabling it to precisely penetrate and densely fill all the cracks and pores connected to it, like a liquid filler, forming a deep sealing effect.

[0025] like Figures 1 to 3 As shown, a filter screen is fixedly connected to the inner cavity of the water inlet cylinder 55, and a plug 59 is fixedly connected to one end of the sealing disc 57. The plug 59 is inserted into the inside of the rotating block 51. A spring 510 is fixedly connected to one end of the sealing disc 57, and one end of the spring 510 abuts against the inner cavity of the rotating block 51. The inner cavity of the rotating block 51 is connected to the inner cavity of the rubber ring 53 through a through hole.

[0026] Specifically, when the water gushing from the working face enters the inner cavity of the rotating block 51 through the water inlet cylinder 55, the filter screen in the inner cavity of the water inlet cylinder 55 filters out sand and gravel in the water, allowing clean water to pressurize the sealing disc 57 through the water inlet cylinder 55. At the same time, the sealing disc 57 pressurizes the spring 510 to push the insert 59, causing the insert 59 to insert into the rotating block 51 and open the water inlet cylinder 55, thus allowing clean water to enter the inner cavity of the rotating block 51. The water then flows into the rubber ring 53 through the through hole in the inner cavity of the rotating block 51. The pressure of the water gushing from the working face then acts on the rubber layer 54, causing it to deform under the water pressure. After the rubber layer 54 deforms, it inserts into the water gushing hole and its extended cracks at the working face, thereby achieving effective sealing of the water gushing hole and the cracks connected to it at the working face.

[0027] like Figure 1 and Figure 7 As shown, a fixing block 11 is fixedly connected to the bottom of the inner cavity of the protective box 1. A rotating shaft 10 is rotatably connected to one side of the fixing block 11. A worm gear 12 is fixedly connected to the outside of the rotating shaft 10, and the worm gear 12 is meshed with the worm wheel 14. The end of the rotating shaft 10 away from the fixing block 11 passes through the protective box 1 and is fixedly connected to a crank handle 7.

[0028] like Figure 1 , Figure 2 and Figure 7 As shown, the upper two sides of the protective box 1 are rotatably connected to the box cover 6, the bottom of the inner cavity of the protective box 1 is equipped with a bracket 8, and the inner wall of the protective box 1 is provided with a drainage hole for draining the water that flows into the inner cavity of the protective box 1 from the tunnel.

[0029] Specifically, before sealing the water inflow at the tunnel face, the crank handle 7 drives the rotating shaft 10 to rotate, which in turn drives the worm gear 12 to rotate. This, in turn, causes the worm gear 12 to mesh with and drive the worm wheel 14 to rotate. Simultaneously, the worm wheel 14 drives the telescopic component 4 to rotate synchronously, thereby adjusting the sealing angle of the sealing component 5. Before sealing, the water entering the protective box 1 at the tunnel face is discharged through the drainage holes in the inner wall of the protective box 1 to ensure the dryness of the inner cavity and prevent prolonged water accumulation, which could lead to rust on components such as the worm wheel 14 and worm gear 12, thus affecting the sealing device. The service life is extended, and by using the worm gear 12 in conjunction with the worm wheel 14 to drive the rotation adjustment of the telescopic component 4, the existing sealing device, which is driven by a motor, is difficult to operate with an external power supply. However, when equipped with a battery power supply, water rushing into the protective box 1 at the working face can easily lead to short circuits and other problems, resulting in low safety of the sealing device. When storing the sealing component 5, the bracket 8 is used to store and lift the sealing component 5 and the support rod 41 to prevent the sealing component 5 from contacting the protective box 1 and causing the rubber parts (rubber ring 53 and rubber layer 54) of the sealing component 5 to be squeezed or worn.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, the telescopic assembly 4 includes a support rod 41 fixed to the outside of the worm gear 14, and an adjusting rod 44 slidably connected to the outside of the support rod 41. One end of the adjusting rod 44 has a U-shaped structure, and the U-shaped structure at one end of the adjusting rod 44 is rotatably connected to the rotating block 51.

[0031] like Figure 1 and Figure 4 As shown, a storage groove 45 is provided in one end of the support rod 41. A threaded rod 43 is rotatably connected to the inner cavity of the storage groove 45. A telescopic rod 42 is threadedly connected to the outside of the threaded rod 43. The telescopic rod 42 is fixedly connected to the inner wall of the adjusting rod 44.

[0032] Specifically, after adjusting the angle of the sealing component 5, the threaded rod 43 is driven to rotate, causing the threaded rod 43 to drive the telescopic rod 42 to move within the cavity of the receiving groove 45. Simultaneously, the telescopic rod 42 drives the adjusting rod 44 to move outside the support rod 41. This causes the adjusting rod 44 to drive the rotating block 51 to push the support plate 52 closer to the water inrush point at the working face. The support plate 52 then drives the rubber ring 53 to cover and seal the water inrush point at the working face. Simultaneously, the rubber layer 54 seals the water inrush holes and their connecting cracks at the working face, thus achieving a sealing effect at the water inrush point and preventing leakage or seepage after the sealing is completed. Furthermore, this solution addresses the problem that existing tunnel face water inrush sealing devices typically use electric actuators or other electrical equipment to drive the actuators and sealing gaskets during the sealing process. However, the water inrush during sealing impacts the electric actuators and actuators, and if water seeps into these devices, it can cause short circuits and other malfunctions, reducing the safety of the sealing device. In addition, external circuitry is inconvenient when using the sealing device in a tunnel. If battery power is used instead, placing the sealing device near the water inrush area makes it difficult to prevent water seepage from the tunnel face, and prolonged use can easily lead to short circuits and leakage, affecting the lifespan of the sealing device.

[0033] Example 2: Figure 1 , Figure 4 and Figure 5 As shown, a transmission groove 17 is provided inside the support rod 41. A U-shaped rotating shaft 18 is rotatably connected to the inner cavity of the transmission groove 17. A driven bevel gear 16 is fixedly connected to the outside of the U-shaped rotating shaft 18. The driven bevel gear 16 is meshed with a transmission bevel gear 15, and the transmission bevel gear 15 is rotatably connected to the support rod 41. The inner cavity of the U-shaped rotating shaft 18 is inserted into the threaded rod 43.

[0034] Specifically, before the telescopic component 4 drives the sealing component 5 to seal the water inrush point at the working face, the drive bevel gear 15 rotates, and the drive bevel gear 15 meshes with the driven bevel gear 16 to rotate, causing the driven bevel gear 16 to drive the U-shaped rotating shaft 18 to rotate, which in turn causes the U-shaped rotating shaft 18 to drive the threaded rod 43 to rotate, thereby causing the threaded rod 43 to drive the threaded transmission adjusting rod 44 to drive the sealing component 5 to seal the water inrush point at the working face. When it is necessary to improve the ease of use of the sealing device, the drive bevel gear 15 and the driven bevel gear 16 can be replaced with a servo motor, and the servo motor and the battery can be installed in the inner cavity of the transmission groove 17. At the same time, the sealing effect and sealing performance of the inner cavity of the transmission groove 17 are increased, and the servo motor drives the U-shaped rotating shaft 18 to rotate, and the U-shaped rotating shaft 18 drives the telescopic component 4 to run, thereby improving the ease of use of the sealing device. At the same time, the detachable servo motor and battery can effectively reduce power supply short circuits and leakage, and improve the safety of the sealing device.

[0035] like Figure 1 , Figure 2 and Figure 8 As shown, a rotating groove 19 is provided in the U-shaped structure at one end of the adjusting rod 44. Gears 20 are fixedly connected to both sides of the rotating block 51. The gears 20 are inserted into the rotating groove 19. An elastic tooth block 21 is fixedly connected to the inner wall of the rotating groove 19, and the elastic tooth block 21 is inserted and meshed with the gear 20.

[0036] Specifically, before the telescopic component 4 drives the rotating block 51 to seal the water inflow point at the tunnel face, the adjusting rod 44 can push the supporting plate 52 to fit tightly against the surface of the water inflow point. At this time, the supporting plate 52 will automatically flip to adjust to the optimal fitting angle. During the rotation of the supporting plate 52, it will drive the rotating block 51 to rotate together, thereby causing the rotating block 51 to drive the gear 20 to squeeze the elastic tooth block 21 to rotate and adjust the angle. After the angle is adjusted, the elastic tooth block 21 springs up and inserts into the tooth groove of the gear 20 for fixation. This effectively prevents the pressure of the water inflow point at the tunnel face from impacting and flipping the supporting plate 52, making it difficult for the supporting plate 52 to effectively seal the water inflow point at the tunnel face. This solves the problem of water leakage caused by the push plate easily flipping in existing tunnel face water inflow sealing devices. The elastic tooth block 21 is made of spring steel sheet, its root is fixed to the inner wall of the rotating groove 19, and its free end is toothed. Figure 8As shown. When gear 20 rotates to adjust the angle, its teeth press against and slide across the inclined surface of elastic tooth block 21, causing it to elastically deform and allow passage. When the adjustment is complete and the external force disappears, elastic tooth block 21 resets under its own elastic force, and its tooth surface engages in the tooth groove of gear 20, forming a one-way ratchet structure. When the surging water pressure attempts to push the support plate 52 to flip, it forces the tooth groove of gear 20 to tightly engage with the tooth surface of elastic tooth block 21, thereby achieving reliable one-way locking and effectively preventing impact-induced flipping.

[0037] like Figure 1 , Figure 6 and Figure 7 As shown, casters 2 are installed at the four corners of the lower end face of the protective box 1. A fixing component 9 is provided in the lower end cavity of the protective box 1. The fixing component 9 includes a push plate 92 that is slidably connected in the lower end cavity of the protective box 1. Multiple fixing cones 13 are fixedly connected to the lower end of the push plate 92.

[0038] like Figure 1 , Figure 6 and Figure 7 As shown, support blocks 95 are fixedly connected to both sides of the upper end of the push plate 92. A connecting rod 96 is fixedly connected to the inner cavity of the support block 95. A push rod 94 is rotatably connected to the outside of the connecting rod 96. A slider 93 is rotatably connected to the end of the push rod 94 away from the connecting rod 96. A bidirectional threaded rod 91 is threadedly connected to the inside of the two sliders 93, and the bidirectional threaded rod 91 is rotatably connected to the lower inner cavity of the protective box 1.

[0039] Specifically, before sealing the water inrush point at the working face, the protective box 1 is moved using the casters 2 to facilitate its movement to the water inrush point, improving the ease of movement of the sealing device. After the protective box 1 is moved to the water inrush point, the bidirectional threaded rod 91 is driven to rotate, causing the two sliders 93 to move closer together. This causes the sliders 93 to drive the push rod 94 to move synchronously. Simultaneously, the push rod 94 pushes the connecting rod 96 to move the support block 95 downwards, which in turn causes the support block 95 to move the push plate 92 downwards. The push plate 92 is then fixed in place by multiple fixed cones 13 inserted into the ground at its lower end, further increasing the sealing efficiency. The stability of the protective box 1 is improved to prevent the reverse pressure generated when the telescopic component 4 pushes the sealing component 5 to seal the water inflow point at the tunnel face from being applied to the protective box 1, causing the protective box 1 to move. This would cause the sealing component 5 to loosen at the water inflow point at the tunnel face, resulting in water seepage and leakage. This solves the problem that existing tunnel face water inflow sealing devices are difficult to move and transport. Even if the mobility is improved by adding wheels, the lack of a fixing mechanism can cause the sealing device body to shift when subjected to the reverse pushing force of the water inflow process, thereby reducing the sealing pressure of the sealing plate on the water inflow point at the tunnel face and causing water seepage and leakage.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for sealing water inrush at a tunnel face, characterized in that: Includes a protective box (1), a U-shaped fixing frame (3) is installed on one side of the inner cavity of the protective box (1), a worm gear (14) is rotatably connected to the inner cavity of the U-shaped fixing frame (3), a telescopic component (4) is fixed to the outside of the worm gear (14), and a sealing component (5) is installed at the end of the telescopic component (4) away from the worm gear (14). The sealing component (5) includes a rotating block (51) rotatably connected to one end of the telescopic component (4). A support plate (52) is fixedly connected to one end of the rotating block (51). A rubber ring (53) is fixedly connected to the outer side of one end face of the support plate (52). A rubber layer (54) is fixedly connected to the inner wall of the rubber ring (53). A water inlet cylinder (55) is installed inside one end of the support plate (52). A sliding column (56) is slidably connected to the inner cavity of the water inlet cylinder (55). A sealing disc (57) is fixedly connected to one end of the sliding column (56). A sealing ring (58) is fixedly connected to the inner wall of the water inlet cylinder (55). The water inlet cylinder (55) is used to receive the water gushing from the working face, so that the water gushing from the working face enters the rubber ring (53) through the water inlet cylinder (55) and squeezes the rubber layer (54) to deform and insert into the water gushing hole and crack of the working face for sealing.

2. The tunnel face water inrush sealing device according to claim 1, characterized in that: A filter screen is fixedly connected to the inner cavity of the water inlet cylinder (55). A plug (59) is fixedly connected to one end of the sealing disc (57). The plug (59) is inserted into the rotating block (51). A spring (510) is fixedly connected to one end of the sealing disc (57), and one end of the spring (510) abuts against the inner cavity of the rotating block (51). The inner cavity of the rotating block (51) is connected to the inner cavity of the rubber ring (53) through a through hole.

3. The tunnel face water inrush sealing device according to claim 1, characterized in that: A fixing block (11) is fixedly connected to the bottom of the inner cavity of the protective box (1). A rotating shaft (10) is rotatably connected to one side of the fixing block (11). A worm (12) is fixedly connected to the outside of the rotating shaft (10), and the worm (12) is meshed with the worm wheel (14). The end of the rotating shaft (10) away from the fixing block (11) passes through the protective box (1) and is fixedly connected to a crank handle (7).

4. The tunnel face water inrush sealing device according to claim 1, characterized in that: The protective box (1) is rotatably connected to the two sides of the upper end with a box cover (6), and a bracket (8) is installed at the bottom of the inner cavity of the protective box (1). The inner wall of the protective box (1) is provided with a drainage hole for draining water from the tunnel into the inner cavity of the protective box (1).

5. A tunnel face water inrush sealing device according to claim 1, characterized in that: The telescopic assembly (4) includes a support rod (41) fixed to the outside of the worm gear (14), and an adjusting rod (44) is slidably connected to the outside of the support rod (41). One end of the adjusting rod (44) is a U-shaped structure, and the U-shaped structure at one end of the adjusting rod (44) is rotatably connected to the rotating block (51).

6. A tunnel face water inrush sealing device according to claim 5, characterized in that: The support rod (41) has a storage groove (45) at one end. A threaded rod (43) is rotatably connected to the inner cavity of the storage groove (45). A telescopic rod (42) is threaded to the outside of the threaded rod (43). The telescopic rod (42) is fixedly connected to the inner wall of the adjusting rod (44).

7. A tunnel face water inrush sealing device according to claim 5, characterized in that: The support rod (41) has a transmission groove (17) inside. The inner cavity of the transmission groove (17) is rotatably connected to a U-shaped rotating shaft (18). The U-shaped rotating shaft (18) is fixedly connected to a driven bevel gear (16) outside. The driven bevel gear (16) is meshed with a transmission bevel gear (15), and the transmission bevel gear (15) is rotatably connected to the support rod (41). The inner cavity of the U-shaped rotating shaft (18) is inserted into a threaded rod (43).

8. A tunnel face water inrush sealing device according to claim 5, characterized in that: A rotating groove (19) is provided in the U-shaped structure at one end of the adjusting rod (44). Gears (20) are fixedly connected to both sides of the rotating block (51). The gears (20) are inserted into the rotating groove (19). An elastic tooth block (21) is fixedly connected to the inner wall of the rotating groove (19), and the elastic tooth block (21) and the gear (20) are inserted and meshed.

9. A tunnel face water inrush sealing device according to claim 1, characterized in that: The protective box (1) is equipped with casters (2) at the four corners of the lower end face. The lower end cavity of the protective box (1) is provided with a fixing component (9). The fixing component (9) includes a push plate (92) that is slidably connected in the lower end cavity of the protective box (1). The lower end of the push plate (92) is fixed with multiple fixing cones (13).

10. A tunnel face water inrush sealing device according to claim 9, characterized in that: Support blocks (95) are fixedly connected to both sides of the upper end of the push plate (92). A connecting rod (96) is fixedly connected to the inner cavity of the support block (95). A push rod (94) is rotatably connected to the outside of the connecting rod (96). A slider (93) is rotatably connected to the end of the push rod (94) away from the connecting rod (96). A two-way threaded rod (91) is threadedly connected inside the two sliders (93), and the two-way threaded rod (91) is rotatably connected to the lower inner cavity of the protective box (1).

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