A tunnel support device using membrane bag concrete combined with corrugated steel plate

Abstract

This invention belongs to the field of tunnel construction, specifically a tunnel support device using membrane bag concrete combined with corrugated steel plates. It includes a tracked chassis, an arch base, hydraulic cylinders, and support beams. The tracked chassis is installed at each of the four bottom corners of the arch base. Multiple pairs of hydraulic cylinders are fixed to the top outer wall of the arch base. A support beam is fixed to the piston rod end of each pair of hydraulic cylinders. Multiple slots are formed on the side of the support beam away from the hydraulic cylinders, and the interior of these slots slides in contact with protrusions on the inner wall of the corrugated steel plate. The tracked chassis moves along the tunnel as the corrugated steel plate is installed, moving the arch base. When the arch base reaches the bottom of the installed corrugated steel plate, the hydraulic cylinders push the support beams closer to the corrugated steel plate, causing the slots to engage with the protrusions on the inner wall of the corrugated steel plate. This results in a tight fit between the support beams and the corrugated steel plate, improving the support effect of the support beams and thus enhancing the safety of tunnel construction.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction, specifically a tunnel support device consisting of membrane bag concrete and corrugated steel plate. Background Technology

[0002] Movable bag concrete is a protective structure formed by using a continuous bag-shaped body made of double-layer high-strength woven chemical fiber fabric as a flexible template. Corrugated steel plates can increase the virtual thickness of the steel plate by setting the corrugations, which significantly improves its buckling resistance and shear resistance. As a building material, corrugated steel plates are gradually being used in transportation facilities, building structures, and industrial and mining construction. In some underground engineering excavation initial support structures, corrugated steel plates are also beginning to be used to make arch structures. Corrugated steel plate arch structures have the advantages of being lightweight and quick and convenient to construct, making them an ideal alternative to traditional reinforced concrete arch structures.

[0003] Chinese patent CN107795327B discloses a novel tunnel construction support device. Its structure includes a support plate, a telescopic bracket, a passage arch, a bracket fixing plate, a fixed base, a connecting sleeve, a movable hinge, a folding bracket, an adjusting rod, a screw, a positioning pin, a positioning hole, and an adjusting nut. The beneficial effects of this invention are as follows: The telescopic bracket is threadedly connected diagonally in the middle to the screw included in the adjusting rod, achieving through-connection. Movable hinges are provided at each corner of the telescopic bracket, allowing for angle adjustment at the corners. The rotation of the screw controls the lateral diagonal distance of the telescopic bracket, thereby changing the vertical diagonal distance. This method of controlling the telescopic extension of the support plate effectively benefits construction personnel by allowing them to adjust the angle, distance, and fit of the support, avoiding any unsupported points and improving the safety of tunnel construction.

[0004] After the corrugated steel plate is installed, it needs to be temporarily supported to prevent it from falling. The existing support method uses a support trolley, but the corrugated structure of the corrugated steel plate makes it impossible for the support plate of the support trolley to fit tightly with the corrugated steel plate, which reduces the support effect of the corrugated steel plate.

[0005] Therefore, the present invention provides a tunnel support device consisting of membrane bag concrete and corrugated steel plate. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A tunnel support device for membrane bag concrete combined with corrugated steel plates, comprising a tracked chassis, an arch base, hydraulic cylinders, and support beams; the tracked chassis is installed at each of the four bottom corners of the arch base, and multiple pairs of hydraulic cylinders are fixedly connected to the top outer wall of the arch base. A support beam is fixedly connected to the piston rod end of each pair of hydraulic cylinders. Multiple slots are opened on the side of the support beam away from the hydraulic cylinders, and the interior of the slots slides in cooperation with the protrusions on the inner wall of the corrugated steel plate. During operation, after a section of the corrugated steel plate is installed in the tunnel, the tracked chassis moves along the tunnel along with the installation progress of the corrugated steel plate, driving the arch base to move. When the arch base moves to the bottom of the installed corrugated steel plate, the hydraulic cylinders push the support beams close to the corrugated steel plate, causing the slots to engage with the protrusions on the inner wall of the corrugated steel plate, resulting in a tight fit between the support beams and the corrugated steel plate, thereby improving the support effect of the support beams on the corrugated steel plate and thus improving the safety of tunnel construction.

[0008] Preferably, the inner wall of the slot has mounting cavities on both sides. A pressure seat is slidably mounted inside the slot. A spring is fixed between the bottom surface of the pressure seat and the bottom surface of the slot. A straight toothed plate is fixed to both sides of the bottom surface of the pressure seat. The straight toothed plate slides through the top wall of the mounting cavity near the middle of the slot. A gear is rotatably mounted at the bottom of the mounting cavity, meshing with the straight toothed plate. A gear is rotatably mounted at the top of the mounting cavity. A sprocket is fixed to the middle of both the first and second gears. Chains are mounted on the outer rings of the sprockets on both sides. A clamping block is slidably mounted on the top surface of the mounting cavity, sliding through the mounting cavity. The side wall of the cavity near the slot opening has a spur rack fixed to the bottom surface of the clamping block, which meshes with the second gear. During operation, when the support beam approaches the corrugated steel plate, the inner wall protrusion of the corrugated steel plate slides into the slot opening, pushing the pressure seat downwards. This compresses the first spring, and the pressure seat pushes the spur rack into the installation cavity, causing the first gear meshing with it to rotate. Through the transmission of the sprocket and chain, the second gear rotates, causing the spur rack meshing with it to move, which in turn causes the clamping blocks on both sides to slide into the slot opening. The clamping blocks on both sides squeeze and hold the inner wall protrusion of the corrugated steel plate, thereby improving the support stability of the corrugated steel plate and further improving the safety of tunnel construction.

[0009] Preferably, the straight toothed plate has multiple vertical grooves on the side near the center of the slot, and an insert is fixedly connected to the side of the mounting cavity near the center of the slot. Multiple bearings are rotatably mounted on the side of the insert near the vertical groove, and the outer wall of the bearing slides in contact with the inner wall of the vertical groove. During operation, the pressure seat pushes the straight toothed plate into the mounting cavity, causing the bearings to slide along the vertical groove, which guides the sliding of the straight toothed plate, reduces the resistance to the sliding of the straight toothed plate, and improves the smoothness of the sliding of the straight toothed plate.

[0010] Preferably, a lubricating oil tank is installed on one side of the inner cavity of the arch base, and the lubricating oil tank is filled with lubricating oil. An oil pump is fixedly connected to the middle of the inner cavity of the arch base, and the oil inlet pipe of the oil pump is connected to the bottom of the lubricating oil tank. The bottom of the support beam and the inside of the side wall of the groove are both provided with oil filling holes. The oil filling holes are connected to the oil outlet of the oil pump through pipes. Multiple oil spray nozzles are fixedly connected to the side of the mounting cavity away from the groove, and the oil spray nozzles are connected to the oil filling holes. During operation, when the transmission of the components in the mounting cavity becomes blocked after the support device has been used for a period of time, the oil pump draws the lubricating oil from the lubricating oil tank, transports it through the pipe to the oil filling holes, and then sprays it into the interior of the mounting cavity from the oil spray nozzles to lubricate the first gear, second gear, sprocket and chain inside the mounting cavity, thereby improving the smoothness of the transmission of the components inside the mounting cavity and thus improving the stability of the support device during operation.

[0011] Preferably, a third gear is rotatably mounted on the top of the mounting cavity. The third gear is located between the second gear and the fuel injector, and the third gear meshes with the second gear. A disc is fixedly connected to the middle of the third gear. Multiple sliding holes are evenly arranged around the outer wall of the disc. A sliding rod is slidably mounted inside the sliding hole. A tension spring is fixedly connected between the sliding rod and the sliding hole. A pair of arc-shaped spring pieces are fixedly connected to the end of the sliding rod away from the tension spring. During operation, the pressure seat slides downward to push the straight gear plate into the mounting cavity, causing the first gear meshing with it to rotate. Through the transmission of the sprocket and chain, the second gear is driven to rotate, causing the straight rack meshing with it to move. At the same time, the second gear drives the third gear to rotate, causing the disc to rotate and generate centrifugal force. The sliding rod slides out of the sliding hole, causing the tension spring to stretch. The arc-shaped spring pieces on both sides return to their original positions and unfold. The third gear drives the sliding rod and the arc-shaped spring pieces to rotate, dispersing the lubricating oil sprayed from the fuel injector into the interior of the mounting cavity, thereby further improving the lubrication effect of the lubricating oil.

[0012] Preferably, each of the pair of arc-shaped spring pieces has a magnet fixed inside, and the magnets on both sides repel each other. During operation, when the arc-shaped spring piece slides out of the sliding hole, the arc-shaped spring piece vibrates. After the arc-shaped spring pieces on both sides come closer, they drive the magnets on both sides to come closer. The magnets on both sides generate a repulsive force, which pushes the arc-shaped spring pieces on both sides to unfold to both sides, thereby increasing the vibration of the arc-shaped spring piece and further improving the dispersing effect of the lubricating oil.

[0013] Preferably, the bottom of the support beam is provided with a waste oil hole, and a waste oil tank is installed on the other side of the inner cavity of the arch base. The waste oil hole and the waste oil tank are connected by a pipe. During operation, the lubricating oil in the installation cavity gradually accumulates at the bottom of the installation cavity. After use, the lubricating oil passes through the waste oil hole and is then discharged into the waste oil tank through a pipe, which facilitates the cleaning work of the staff and the recycling of the lubricating oil after use.

[0014] Preferably, the waste oil tank and the lubricating oil tank are connected by a pipeline. Multiple baffles are fixed to the bottom of the waste oil tank, with the height of the baffles increasing sequentially from the side furthest from the lubricating oil tank. During operation, the lubricating oil entering the waste oil tank settles through the multiple layers of progressively higher baffles. After use, the lubricating oil enters the waste oil tank and is filtered through the multiple baffles, separating the clearer lubricating oil on the top surface from the lubricating oil containing a large amount of impurities at the bottom. The clear lubricating oil gradually overflows the baffles and enters the space on the side of the waste oil tank closest to the lubricating oil tank. When the oil pump draws lubricating oil from the lubricating oil tank, a negative pressure is generated inside the lubricating oil tank, drawing the clear lubricating oil from the waste oil tank into the lubricating oil tank for reuse, thereby further reducing lubricating oil waste.

[0015] Preferably, a fluff pad is fixed to the bottom between adjacent partitions, and the fluff density of the fluff pad increases sequentially from the side away from the lubricating oil tank. During operation, when the lubricating oil settles in the waste oil tank after use, the solid particulate impurities in the lubricating oil are trapped and cleaned by the fluff in the fluff pad. Through multiple layers of gradually denser fluff pads, the impurities in the lubricating oil after use are effectively reduced, thereby improving the utilization rate of the lubricating oil.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The tunnel support device of the present invention, which combines membrane bag concrete with corrugated steel plate, comprises a hydraulic cylinder, a support beam, a pressure seat, a straight gear plate, a first gear, a second gear, a sprocket, a chain, and clamping blocks. The hydraulic cylinder pushes the support beam close to the corrugated steel plate, causing the slot to engage with the protrusion on the inner wall of the corrugated steel plate, resulting in a tight fit between the support beam and the corrugated steel plate. The protrusion on the inner wall of the corrugated steel plate slides into the slot, pushing the pressure seat downwards. Through the transmission of the straight gear plate, the first gear, the second gear, the sprocket, and the chain, the clamping blocks on both sides slide into the slot, squeezing and holding the protrusion on the inner wall of the corrugated steel plate. This improves the support effect of the support beam on the corrugated steel plate, thereby enhancing the safety of tunnel construction.

[0018] 2. The tunnel support device of the membrane bag concrete and corrugated steel plate of the present invention is equipped with a lubricating oil tank, an oil pump and an oil nozzle; the oil pump draws lubricating oil from the lubricating oil tank, transports it through the pipeline to the oil filling hole, and then sprays it into the interior of the installation cavity from the oil nozzle, so as to lubricate the first gear, the second gear, the sprocket and the chain inside the installation cavity, thereby improving the smoothness of the transmission of the various components inside the installation cavity, and thus improving the stability of the support device during operation. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0021] Figure 2 This is a side view of Embodiment 1 of the present invention;

[0022] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0023] Figure 4 yes Figure 3 Enlarged view of a section at point B in the middle;

[0024] Figure 5 yes Figure 3 Enlarged view of a section at point C;

[0025] Figure 6 This is a partial structural diagram of the mounting cavity in Embodiment 2 of the present invention;

[0026] In the diagram: 1. Tracked chassis; 2. Arch base; 3. Hydraulic cylinder; 4. Support beam; 5. Groove; 6. Mounting cavity; 7. Pressure seat; 8. Spring No. 1; 9. Straight tooth plate; 10. Gear No. 1; 11. Gear No. 2; 12. Sprocket; 13. Chain; 14. Clamping block; 15. Straight tooth rack; 16. Vertical groove; 17. Insert; 18. Bearing; 19. Lubricating oil tank; 20. Oil pump; 21. Oil filling hole; 22. Oil injector; 23. Gear No. 3; 24. Disc; 25. Sliding hole; 26. Sliding rod; 27. Tension spring; 28. Arc-shaped spring; 29. ​​Magnet; 30. Waste oil hole; 31. Waste oil tank; 32. Partition plate; 33. Fleece pad; 34. Insert; 35. Spring; 36. Spring No. 2; 37. Protrusion. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] like Figure 1As shown in the embodiment of the present invention, a tunnel support device using membrane bag concrete and corrugated steel plate includes a tracked chassis 1, an arch base 2, hydraulic cylinders 3, and support beams 4. The tracked chassis 1 is installed at each of the four bottom corners of the arch base 2. Multiple pairs of hydraulic cylinders 3 are fixedly connected to the top outer wall of the arch base 2. A support beam 4 is fixedly connected to the piston rod end of each pair of hydraulic cylinders 3. Multiple slots 5 are formed on the side of the support beam 4 away from the hydraulic cylinders 3. The interior of each slot 5 is flush with the inner wall of the corrugated steel plate. The system features a raised sliding fit. During operation, after a section of the corrugated steel plate is installed inside the tunnel, the tracked chassis 1 moves along the tunnel along with the installation progress of the corrugated steel plate, driving the arch base 2 to move. When the arch base 2 moves to the bottom of the installed corrugated steel plate, the hydraulic cylinder 3 pushes the support beam 4 close to the corrugated steel plate, causing the slot 5 to engage with the raised part of the inner wall of the corrugated steel plate. This ensures that the support beam 4 fits tightly with the corrugated steel plate, thereby improving the support effect of the support beam 4 on the corrugated steel plate and thus improving the safety of tunnel construction.

[0030] like Figures 2 to 3 As shown, mounting cavities 6 are provided on both sides of the inner wall of the slot 5. A pressure seat 7 is slidably installed inside the slot 5. A first spring 8 is fixed between the bottom surface of the pressure seat 7 and the bottom surface of the slot 5. A straight tooth plate 9 is fixed on both sides of the bottom surface of the pressure seat 7. The straight tooth plate 9 slides through the top wall of the mounting cavity 6 near the middle of the slot 5. A first gear 10 is rotatably installed at the bottom of the mounting cavity 6. The first gear 10 meshes with the straight tooth plate 9. A second gear 11 is rotatably installed at the top of the mounting cavity 6. A sprocket 12 is fixedly connected to the middle of the first gear 10 and the middle of the second gear 11. A chain 13 is installed on the outer ring of the sprocket 12 on both sides. A clamping block 14 is slidably installed on the top surface of the mounting cavity 6. The clamping block 14 is fixed to the bottom surface of the clamping block 14 near the side wall of the groove 5. The clamping block 15 meshes with the second gear 11. During operation, when the support beam 4 approaches the corrugated steel plate, the inner wall protrusion of the corrugated steel plate slides into the groove 5, pushing the pressure seat 7 to slide downward, causing the first spring 8 to compress. The pressure seat 7 pushes the straight tooth plate 9 into the installation cavity 6, driving the first gear 10 meshing with it to rotate. Through the transmission of the sprocket 12 and the chain 13, the second gear 11 is driven to rotate, driving the meshing straight tooth plate 15 to move, and driving the clamping blocks 14 on both sides to slide into the groove 5. The clamping blocks 14 on both sides squeeze and clamp the inner wall protrusion of the corrugated steel plate, thereby improving the support stability of the corrugated steel plate, and further improving the safety of tunnel construction.

[0031] like Figure 4As shown, the straight toothed plate 9 has multiple vertical grooves 16 on the side near the center of the slot 5. The mounting cavity 6 has an insert 17 fixedly connected to the side near the center of the slot 5. Multiple bearings 18 are rotatably mounted on the side of the insert 17 near the vertical grooves 16. The outer wall of the bearing 18 slides in cooperation with the inner wall of the vertical groove 16. During operation, the pressure seat 7 pushes the straight toothed plate 9 into the mounting cavity 6, causing the bearings 18 to slide along the vertical grooves 16, which guides the sliding of the straight toothed plate 9, reduces the resistance to the sliding of the straight toothed plate 9, and improves the smoothness of the sliding of the straight toothed plate 9.

[0032] like Figure 2 , Figure 3 and Figure 5 As shown, a lubricating oil tank 19 is installed on one side of the inner cavity of the arch base 2. The lubricating oil tank 19 is filled with lubricating oil. An oil pump 20 is fixedly connected to the middle of the inner cavity of the arch base 2. The oil inlet pipe of the oil pump 20 is connected to the bottom of the lubricating oil tank 19. The bottom of the support beam 4 and the side wall of the slot 5 are both provided with oil filling holes 21. The oil filling holes 21 are connected to the oil outlet of the oil pump 20 through pipes. Multiple oil spray nozzles 22 are fixedly connected to the side of the mounting cavity 6 away from the slot 5. The nozzle 22 connects to the oil filling hole 21. During operation, when the transmission of the components in the mounting cavity 6 becomes blocked after the support device has been used for a period of time, the oil pump 20 draws out the lubricating oil from the lubricating oil tank 19, delivers it through the pipeline to the oil filling hole 21, and then sprays it into the interior of the mounting cavity 6 from the nozzle 22. This lubricates the first gear 10, the second gear 11, the sprocket 12, and the chain 13 inside the mounting cavity 6, improving the smoothness of the transmission of the components inside the mounting cavity 6, thereby improving the stability of the support device during operation.

[0033] like Figure 5As shown, a No. 3 gear 23 is rotatably mounted on the top of the mounting cavity 6. The No. 3 gear 23 is located between the No. 2 gear 11 and the fuel injector 22, and the No. 3 gear 23 meshes with the No. 2 gear 11. A disc 24 is fixedly connected to the middle of the No. 3 gear 23. A plurality of sliding holes 25 are evenly arranged around the outer wall of the disc 24. A sliding rod 26 is slidably installed inside the sliding hole 25. A tension spring 27 is fixedly connected between the sliding rod 26 and the sliding hole 25. A pair of arc-shaped spring pieces 28 are fixedly connected to the end of the sliding rod 26 away from the tension spring 27. During operation, the pressure seat 7 slides downward to push the straight tooth plate 9 into the mounting cavity. Inside 6, the first gear 10, which meshes with it, rotates. Through the transmission of the sprocket 12 and the chain 13, the second gear 11 rotates, driving the spur rack 15, which meshes with it, to move. At the same time, the second gear 11 drives the third gear 23 to rotate, causing the disc 24 to rotate and generate centrifugal force. The slide rod 26 slides out from the slide hole 25, causing the tension spring 27 to stretch. The arc-shaped spring pieces 28 on both sides return to their original positions and unfold. The third gear 23 drives the slide rod 26 and the arc-shaped spring pieces 28 to rotate, dispersing the lubricating oil sprayed from the oil injector 22 into the interior of the mounting cavity 6, thereby further improving the lubrication effect of the lubricating oil.

[0034] like Figure 5 As shown, each of the pair of arc-shaped spring pieces 28 has a magnet 29 fixed inside, and the magnets 29 on both sides repel each other. During operation, when the arc-shaped spring piece 28 slides out of the sliding hole 25, the arc-shaped spring piece 28 vibrates. After the arc-shaped spring pieces 28 on both sides come closer, they drive the magnets 29 on both sides to come closer. The magnets 29 on both sides generate a repulsive force, which pushes the arc-shaped spring pieces 28 on both sides to spread out to both sides, thereby improving the vibration of the arc-shaped spring piece 28, and further improving the dispersing effect of the lubricating oil.

[0035] like Figures 2 to 3 As shown, the bottom of the support beam 4 is provided with a waste oil hole 30, and a waste oil tank 31 is installed on the other side of the inner cavity of the arch base 2. The waste oil hole 30 and the waste oil tank 31 are connected by a pipe. During operation, the lubricating oil in the mounting cavity 6 gradually accumulates at the bottom of the mounting cavity 6. After use, the lubricating oil passes through the waste oil hole 30 and is then discharged into the waste oil tank 31 through the pipe, which facilitates the cleaning work of the staff and the recycling of the lubricating oil after use.

[0036] like Figure 2As shown, the waste oil tank 31 and the lubricating oil tank 19 are connected by a pipe. Multiple baffles 32 are fixed to the bottom surface of the waste oil tank 31, with the height of the baffles 32 increasing sequentially from the side furthest from the lubricating oil tank 19. During operation, the lubricating oil entering the waste oil tank 31 is allowed to settle through the multiple layers of progressively higher baffles 32. After use, the lubricating oil enters the waste oil tank 31 and is filtered by the multiple layers of baffles 32, separating the clearer lubricating oil on the top surface from the lubricating oil containing a large amount of impurities at the bottom. The clear lubricating oil gradually overflows the baffles 32 and enters the space on the side of the waste oil tank 31 closest to the lubricating oil tank 19. When the oil pump 20 draws lubricating oil from the lubricating oil tank 19, a negative pressure is generated inside the lubricating oil tank 19, drawing the clear lubricating oil from the waste oil tank 31 into the lubricating oil tank 19 for reuse, thereby further reducing lubricating oil waste.

[0037] like Figure 2 As shown, a fluff pad 33 is fixed to the bottom between adjacent partitions 32. The fluff density of the fluff pad 33 increases sequentially from the side away from the lubricating oil tank 19. During operation, when the lubricating oil settles in the waste oil tank 31 after use, the solid particulate impurities in the lubricating oil are cleaned by the fluff in the fluff pad 33. Through multiple layers of gradually denser fluff pads 33, the impurities in the lubricating oil after use are effectively reduced, thereby improving the utilization rate of the lubricating oil.

[0038] Example 2

[0039] like Figure 6 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a plurality of inserts 34 are fixedly connected to the middle of the mounting cavity 6 near the slot 5. A pair of spring bars 35 are fixedly connected to the end of the insert 34 away from the slot 5. A second spring 36 is fixedly connected between the other end of the spring bar 35 and the inner wall of the mounting cavity 6. A plurality of protrusions 37 are fixedly connected to the side of the spring bar 35 near the chain 13. The protrusions 37 slide with the chain 13. During operation, the chain 13 moves under the drive of the sprocket 12. When the chain 13 passes over the protrusions 37, the spring bar 35 vibrates, causing the second spring 36 to vibrate. The resulting reaction force pushes the chain 13 to vibrate, shaking off the oil stains on the surface of the chain 13, improving the surface cleanliness of the chain 13 and reducing the probability of the chain 13 falling off the outside of the sprocket 12.

[0040] During operation: After a section of corrugated steel plate is installed inside the tunnel, the tracked chassis 1 moves along the tunnel as the corrugated steel plate is installed, driving the arch base 2 to move. When the arch base 2 moves to the bottom of the installed corrugated steel plate, the hydraulic cylinder 3 pushes the support beam 4 close to the corrugated steel plate, causing the slot 5 to engage with the protrusion on the inner wall of the corrugated steel plate, ensuring a tight fit between the support beam 4 and the corrugated steel plate. As the support beam 4 approaches the corrugated steel plate, the protrusion on the inner wall of the corrugated steel plate slides into the slot 5, pushing the pressure seat. 7 slides downwards, compressing the first spring 8. The pressure seat 7 pushes the straight tooth plate 9 into the installation cavity 6, causing the first gear 10 meshing with it to rotate. Through the transmission of the sprocket 12 and the chain 13, the second gear 11 is driven to rotate, causing the straight tooth rack 15 meshing with it to move. This causes the clamping blocks 14 on both sides to slide into the slot 5. The clamping blocks 14 on both sides squeeze and hold the inner wall protrusion of the corrugated steel plate, thereby improving the support stability of the corrugated steel plate and improving the safety of tunnel construction.

[0041] When the transmission of components in the mounting cavity 6 becomes blocked after the support device has been used for a period of time, the oil pump 20 draws lubricating oil from the lubricating oil tank 19, delivers it through the pipeline to the filling hole 21, and then sprays it into the interior of the mounting cavity 6 from the spray nozzle 22; the pressure seat 7 slides down to push the straight gear plate 9 into the mounting cavity 6, driving the first gear 10 meshing with it to rotate, and through the transmission of the sprocket 12 and the chain 13, driving the second gear 11 to rotate, driving the straight gear 15 meshing with it to move. At the same time, the second gear 11... The rotation of gear 23 causes the disc 24 to rotate, generating centrifugal force. The slide bar 26 slides out of the slide hole 25, causing the tension spring 27 to stretch. The arc-shaped springs 28 on both sides return to their original positions and unfold. Gear 23 drives the slide bar 26 and the arc-shaped springs 28 to rotate, dispersing the lubricating oil sprayed from the nozzle 22 into the interior of the mounting cavity 6. This lubricates gear 10, gear 11, sprocket 12 and chain 13 inside the mounting cavity 6, improving the smoothness of transmission of various components inside the mounting cavity 6.

[0042] The lubricating oil in the mounting cavity 6 gradually accumulates at the bottom of the mounting cavity 6. After use, the lubricating oil passes through the waste oil hole 30 and then flows into the waste oil tank 31 through a pipe. After being filtered by the sedimentation of multiple layers of baffles 32, the solid particles and impurities in the lubricating oil are cleaned by the fibers in the fluff pads 33. After passing through multiple layers of increasingly dense fluff pads 33, the impurities in the lubricating oil after use are effectively reduced. The relatively clear lubricating oil on the top surface and the lubricating oil containing a large amount of impurities at the bottom are separated. The clear lubricating oil gradually overflows through the baffles 32 and enters the space on the side of the waste oil tank 31 near the lubricating oil tank 19. When the oil pump 20 draws out the lubricating oil from the lubricating oil tank 19, a negative pressure is generated in the lubricating oil tank 19, which draws the clear lubricating oil from the waste oil tank 31 into the lubricating oil tank 19 for reuse, thereby further reducing the waste of lubricating oil.

[0043] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0044] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0045] 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 tunnel support device using membrane bag concrete combined with corrugated steel plate, characterized in that: It includes a tracked chassis (1), an arch base (2), hydraulic cylinders (3) and a support beam (4); the tracked chassis (1) is installed at the four corners of the bottom of the arch base (2), and multiple pairs of hydraulic cylinders (3) are fixed to the top outer wall of the arch base (2). The piston rod end of each pair of hydraulic cylinders (3) is fixed to a support beam (4). Multiple slots (5) are opened on the side of the support beam (4) away from the hydraulic cylinders (3). The inside of the slots (5) slides in cooperation with the inner wall of the corrugated steel plate. The slot (5) has mounting cavities (6) on both sides of its inner wall. A pressure seat (7) is slidably installed inside the slot (5). A first spring (8) is fixed between the bottom surface of the pressure seat (7) and the bottom surface of the slot (5). A straight tooth plate (9) is fixed on both sides of the bottom surface of the pressure seat (7). The straight tooth plate (9) slides through the top wall of the mounting cavity (6) near the middle of the slot (5). A first gear (10) is rotatably installed at the bottom of the mounting cavity (6). The first gear (10) meshes with the straight tooth plate (9). A second gear (11) is rotatably mounted on the top of the mounting cavity (6). A sprocket (12) is fixedly connected to the middle of both the first gear (10) and the second gear (11). A chain (13) is mounted on the outer ring of the sprocket (12) on both sides. A clamping block (14) is slidably mounted on the top surface of the mounting cavity (6). The clamping block (14) slides through the side wall of the mounting cavity (6) near the slot (5). A straight rack (15) is fixedly connected to the bottom surface of the clamping block (14). The straight rack (15) meshes with the second gear (11). The straight tooth plate (9) has multiple vertical grooves (16) on the side near the middle of the groove (5). The mounting cavity (6) has a block (17) fixedly connected to the side near the middle of the groove (5). Multiple bearings (18) are rotatably installed on the side of the block (17) near the vertical groove (16). The outer wall of the bearing (18) slides with the inner wall of the vertical groove (16).

2. The tunnel support device of membrane bag concrete combined with corrugated steel plate according to claim 1, characterized in that: A lubricating oil tank (19) is installed on one side of the inner cavity of the arch base (2). The lubricating oil tank (19) is filled with lubricating oil. An oil pump (20) is fixedly connected to the middle of the inner cavity of the arch base (2). The oil inlet pipe of the oil pump (20) is connected to the bottom of the lubricating oil tank (19). The bottom of the support beam (4) and the inside of the side wall of the slot (5) are both provided with oil filling holes (21). The oil filling holes (21) are connected to the oil outlet of the oil pump (20) through pipes. Multiple oil nozzles (22) are fixedly connected to the side of the mounting cavity (6) away from the slot (5). The oil nozzles (22) are connected to the oil filling holes (21).

3. The tunnel support device of membrane bag concrete combined with corrugated steel plate according to claim 1, characterized in that: A third gear (23) is rotatably mounted on the top of the mounting cavity (6). The third gear (23) is located between the second gear (11) and the fuel injector (22), and the third gear (23) meshes with the second gear (11). A disc (24) is fixedly connected to the middle of the third gear (23). Multiple sliding holes (25) are evenly arranged around the outer wall of the disc (24). A sliding rod (26) is slidably installed inside the sliding hole (25). A tension spring (27) is fixedly connected between the sliding rod (26) and the sliding hole (25). A pair of arc-shaped spring pieces (28) are fixedly connected to the end of the sliding rod (26) away from the tension spring (27).

4. The tunnel support device of membrane bag concrete combined with corrugated steel plate according to claim 3, characterized in that: A magnet (29) is fixed inside each of the pair of arc-shaped spring pieces (28), and the magnets (29) on both sides repel each other.

5. A tunnel support device for membrane bag concrete combined with corrugated steel plate according to claim 2, characterized in that: The bottom of the support beam (4) is provided with a waste oil hole (30), and a waste oil tank (31) is installed on the other side of the inner cavity of the arch base (2). The waste oil hole (30) and the waste oil tank (31) are connected by a pipe.

6. A tunnel support device for membrane bag concrete combined with corrugated steel plate according to claim 5, characterized in that: The waste oil tank (31) and the lubricating oil tank (19) are connected by a pipe. Multiple partitions (32) are fixed to the bottom surface of the waste oil tank (31). The height of the partitions (32) increases sequentially from the side away from the lubricating oil tank (19).

7. A tunnel support device for membrane bag concrete combined with corrugated steel plate according to claim 6, characterized in that: A fleece pad (33) is fixed to the bottom between adjacent partitions (32), and the fleece density of the fleece pad (33) increases sequentially from the side away from the lubricating oil tank (19).

8. The tunnel support device of membrane bag concrete combined with corrugated steel plate according to claim 1, characterized in that: Multiple inserts (34) are fixedly connected to the middle of the mounting cavity (6) near the slot (5). A pair of spring bars (35) are fixedly connected to the end of the insert (34) away from the slot (5). A second spring (36) is fixedly connected between the other end of the spring bar (35) and the inner wall of the mounting cavity (6). Multiple protrusions (37) are fixedly connected to the side of the spring bar (35) near the chain (13). The protrusions (37) slide with the chain (13).

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