A slurry placing device for shield tunnel construction

Abstract

The present application relates to the field of shield tunnel construction, specifically to a mortar placing device for shield tunnel construction, comprising an operation plate, the operation plate is used for supporting the mortar placing device, the top of the operation plate is respectively fixedly provided with a ladder and a mortar level observation platform, the mortar level observation platform is used for observing the mortar level so as to control the mortar amount; the top of the ladder is fixedly provided with a bracket rail, one end of the bracket rail away from the ladder is fixedly connected with the mortar level observation platform; a steel plate, the steel plate is used for bearing the mortar placing related pipelines and can adjust the bottom mortar placing position, the center of the steel plate is provided with an adaptive hole, a material pipe is arranged in the adaptive hole, the top of the material pipe is fixedly connected with a ductility pipe, the top of the ductility pipe is fixedly connected with external pipelines, the mortar placing device for shield tunnel construction can automatically trigger the sealing structure through mechanical linkage when the pulley is stuck, the first and second sealing plates are synchronously moved and embedded, and the material pipe passage is quickly blocked.

Description

Technical Field

[0001] This invention relates to the field of shield tunnel construction technology, specifically to a grout discharge device for shield tunnel construction. Background Technology

[0002] Currently, most slurry discharge equipment in the industry uses fixed pipeline discharge or simple manual guiding structures, lacking a dedicated integrated design for flexible guidance and emergency sealing in case of failure. Traditional slurry discharge equipment achieves guidance by manually adjusting the pipeline position, which is cumbersome and has low precision; the pipeline movement mechanism lacks buffer protection, making it prone to component damage due to material jamming; at the same time, there is no automatic emergency sealing mechanism, requiring manual valve closure or pipeline sealing in case of failure, resulting in slow sealing response, poor sealing effect, and easy slurry leakage. With the increasing requirements for slurry discharge accuracy, operational safety, and fault handling efficiency in engineering construction, traditional equipment can no longer meet the needs of complex construction scenarios. Therefore, there is an urgent need to develop a dedicated slurry discharge device with flexible guidance, buffer anti-jamming, and fault linkage sealing functions to improve the reliability and efficiency of slurry discharge operations. Summary of the Invention

[0003] The present invention provides a grout discharge device for shield tunnel construction to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a grout discharge device for shield tunnel construction, comprising an operating panel, the operating panel being used to support the grout discharge device, and a ladder and a grout observation platform being fixedly installed on its top, the grout observation platform being used to observe the grout level in order to control the grout volume; A support rail is fixedly installed at the top of the ladder, and the end of the support rail away from the ladder is fixedly connected to the pulp observation platform. A steel plate is used to support the slurry discharge pipeline and can adjust the bottom slurry discharge position. An adapter hole is opened in the center of the steel plate, and a material pipe is installed in the adapter hole. A tough tube is fixedly connected to the top of the material pipe, and the top of the tough tube is fixedly connected to an external pipeline.

[0005] Preferably, a pulley is rotatably mounted on the bottom of the steel plate via a wheel frame, and the bottom of the pulley is slidably adapted to the track inside the support rail.

[0006] Preferably, both ends of the steel plate are fixedly connected to support plates, and the outer sides of the support plates and the support rails are fitted with limiters to prevent the steel plate from falling off.

[0007] Preferably, a gear and rack box is fixedly installed on the outside of the material tube, and a gear is rotatably installed in the center of the gear and rack box via a connecting shaft. A first rack and a second rack are respectively meshed and driven on both sides of the gear.

[0008] Preferably, a bottom inclined frame is fixedly installed on the outside of the material tube, and a sealing plate is slidably fitted inside the bottom inclined frame. The outside of the sealing plate is fixedly connected to the rack.

[0009] Preferably, a second bottom inclined frame is fixedly installed on the side of the material pipe away from the first bottom inclined frame, and a second sealing plate is slidably adapted inside the second bottom inclined frame, and the outer side of the second sealing plate is fixedly connected to the second rack.

[0010] Preferably, a base plate is fixedly connected to the bottom of both the first sealing plate and the second sealing plate, and a return spring is fixedly connected to the outer side of the base plate. The end of the return spring away from the base plate is fixedly connected to the outer side of the first bottom inclined frame. A fitting plate is fixedly connected to the outer end face of the No. 1 sealing plate.

[0011] Preferably, a bending strip is fixedly connected to the outer side of the first sealing plate, and a T-shaped plate is fixedly connected to the end of the bending strip away from the first sealing plate; Both ends of the steel plate are provided with fitting grooves, and elastic telescopic rods are fixedly installed in the fitting grooves. A sleeve plate is fixedly connected to the end of the elastic telescopic rod away from the steel plate, and the sleeve plate is connected to an external pull rope.

[0012] Preferably, a support is fixedly connected to the bottom of the output end of the elastic telescopic rod, and a fixed shaft is fixedly connected inside the support. A limit plate is rotatably installed on the outside of the fixed shaft. One side of the limit plate is pressed and adapted to the steel plate, and the other side is pressed and adapted to the T-shaped plate.

[0013] Preferably, a resilient pad is fixedly connected inside the material tube; The outer end face of the second sealing plate is provided with a square groove, and an elastic sheet is fixedly connected in the square groove. The square groove fits properly with the interlocking plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By pulling the rope, the material pipe can be moved left and right, which can flexibly adjust the direction of slurry delivery and accurately target the slurry delivery needs of different construction positions without moving the whole equipment, thus improving the convenience of construction and work efficiency.

[0015] 2. When the pulley gets stuck, the sealing structure can be automatically triggered by mechanical linkage. The No. 1 and No. 2 sealing plates move synchronously and fit together, quickly blocking the material pipe passage. This effectively avoids the problem of slurry leakage caused by the uncontrolled displacement of the material pipe due to the sticking, and reduces construction waste and pollution risks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of a grout discharge device for shield tunnel construction according to the present invention.

[0017] Figure 2 This is an enlarged structural schematic diagram of the steel plate in the slurry discharge device of the present invention.

[0018] Figure 3 This is an enlarged schematic diagram of the pulley structure in the slurry discharge device of the present invention.

[0019] Figure 4 This is an enlarged structural schematic diagram of the gear and rack box in the slurry discharge device of the present invention.

[0020] Figure 5 This is a cross-sectional view of the limiting plate in the slurry discharge device of the present invention.

[0021] Figure 6 This is a cross-sectional enlarged structural schematic diagram of the elastic sheet in the slurry discharge device of the present invention.

[0022] Figure 7 This is an enlarged structural schematic diagram of the interlocking plate in the slurry discharge device of the present invention.

[0023] In the diagram: 1. Control panel; 2. Ladder; 3. Slurry viewing platform; 4. Support rail; 5. Steel plate; 6. Pulley; 7. Support plate; 8. Limiter; 9. Material pipe; 10. Toughness pipe; 11. Gear and rack box; 12. Rack No. 1; 13. Rack No. 2; 14. Bottom inclined frame No. 1; 15. Sealing plate No. 1; 16. Base plate; 17. Return spring; 18. Bottom inclined frame No. 2; 19. Sealing plate No. 2; 20. Bending strip; 21. T-shaped plate; 22. Elastic telescopic rod; 23. Sleeve plate; 24. Support; 25. Limiting plate; 26. Clamping plate; 27. Elastic sheet; 28. Toughness pad. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 7This invention provides a technical solution: a grout discharge device for shield tunnel construction. Its core load-bearing component is an operating panel 1, made of high-strength steel plate, which provides stable support for the entire device and is suitable for the complex working conditions of shield tunnel construction. A ladder 2 and a grout observation platform 3 are welded and fixedly installed on the top of the operating panel 1. The ladder 2 allows operators to move up and down, while the grout observation platform 3 is a horizontal operating platform used to observe the grout level for precise control of the discharge volume, ensuring construction accuracy. A support rail 4 is welded and fixed to the top of the ladder 2. The support rail 4 is horizontally arranged, with its end furthest from the ladder 2 welded and fixed to the grout observation platform 3, forming a stable horizontal guide rail structure that provides a supporting foundation for the movement of the steel plate 5.

[0026] Steel plate 5 is used to support the slurry discharge pipeline. A fitting hole is provided in its center, into which a material pipe 9 is fixedly embedded. The material pipe 9 is arranged vertically, and its top is fixedly connected to a flexible pipe 10 via a flange. The flexible pipe 10 is made of high-strength, flexible, and wear-resistant material, which can adapt to the displacement adjustment of steel plate 5. Its top is fixedly connected to an external slurry supply pipeline to achieve stable slurry delivery. A wheel frame is bolted to the bottom of steel plate 5. A pulley 6 is rotatably mounted inside the wheel frame via a rotating shaft. The bottom of the pulley 6 slides and adapts to the track inside the support rail 4, allowing steel plate 5 to move smoothly horizontally along the support rail 4, thus adjusting the slurry discharge position.

[0027] Both ends of the steel plate 5 are fixedly connected to the support plate 7 by welding. The support plate 7 is in a bent and extended state. The support plate 7 and the outer side of the support rail 4 are both fitted with limiters 8. The limiters 8 are ring locking structures. The inner and outer sides are squeezed and fitted to prevent the steel plate 5 from falling off the support rail 4 during the movement, thus ensuring the safety of displacement adjustment.

[0028] A gear and rack box 11 is fixedly installed on the outside of the material pipe 9 by bolts. A gear is installed in the center of the gear and rack box 11 through a connecting shaft. The gear can rotate freely around the connecting shaft. A first rack 12 and a second rack 13 are installed on both sides of the gear and rack 11 respectively. The rotation of the gear realizes the reverse synchronous movement of the first rack 12 and the second rack 13.

[0029] A first bottom inclined frame 14 is welded and fixedly installed on the outer side of the material tube 9, corresponding to the position of the first rack 12. The interior of the first bottom inclined frame 14 is a groove-shaped structure with an inclined bottom. A first sealing plate 15 is slidably fitted inside. The first sealing plate 15 can move towards the center of the material tube 9 along the parallel track of the first bottom inclined frame 14. Its outer side is fixedly connected to the first rack 12 by welding and moves synchronously with the first rack 12. On the side of the material tube 9 away from the first bottom inclined frame 14, corresponding to the position of the second rack 13, a second bottom inclined frame 18 is welded and fixedly installed. The second bottom inclined frame 18 is symmetrically arranged with the first bottom inclined frame 14. A second sealing plate 19 is slidably fitted inside. The outer side of the second sealing plate 19 is fixedly connected to the second rack 13 by welding and moves synchronously with the second rack 13. It cooperates with the first sealing plate 15 to achieve bidirectional sealing of the material tube 9.

[0030] Both the No. 1 sealing plate 15 and the No. 2 sealing plate 19 are fixedly connected to a base plate 16 by welding to their bottoms. A return spring 17 is fixedly connected to the outer side of the base plate 16 by welding to its outer side. The end of the return spring 17 away from the base plate 16 is fixedly connected to the outer side of the No. 1 bottom inclined frame 14 by welding. In the initial state, the return spring 17 is in a compressed state, storing elastic potential energy to provide driving force for the reset of the sealing plate. A fitting plate 26 is fixedly connected to the outer end face of the No. 1 sealing plate 15 by welding to its outer end face. A square groove is opened on the outer end face of the No. 2 sealing plate 19. An elastic sheet 27 is fixedly connected to the square groove by adhesive. The square groove and the fitting plate 26 fit precisely together. The sealing effect is enhanced by the compression and adhesion between the fitting plate 26 and the elastic sheet 27. A tough pad 28 is fixedly connected to the inside of the material tube 9 by adhesive to adhere to the sealing plate and further improve the sealing performance.

[0031] A bent strip 20 is welded and fixed to the outer side of the No. 1 sealing plate 15. The bent strip 20 has an L-shaped structure. A T-shaped plate 21 is welded and fixed to the end away from the No. 1 sealing plate 15, which serves as the force carrier for limit triggering. Both ends of the steel plate 5 are provided with adapter grooves. An elastic telescopic rod 22 is bolted and installed in the adapter groove. The elastic telescopic rod 22 is arranged in the horizontal direction and can realize axial extension and buffering. A sleeve plate 23 is welded and fixed to the end away from the steel plate 5. The sleeve plate 23 has a ring structure and is used to connect with an external pull rope. The extension and retraction of the elastic telescopic rod 22 is driven by the pull rope.

[0032] The bottom of the output end of the elastic telescopic rod 22 is fixedly connected to a support 24 by welding. The inside of the support 24 is fixedly connected to a fixed shaft by welding. A limit plate 25 is rotatably installed on the outside of the fixed shaft through a bearing. The limit plate 25 can rotate freely around the fixed shaft. One side of it is pressed and adapted to the outside of the steel plate 5, and the other side is pressed and adapted to the T-shaped plate 21. In the initial state, a force balance is formed, which restricts the movement of the sealing plate.

[0033] The working principle of this invention is as follows: The operator first attaches the two pull ropes to the sleeve plates 23 on the left and right sides respectively, starts the pump to inject the slurry into the external pipeline, and the slurry is conveyed downward through the tough pipe 10 and the material pipe 9 and discharged in sequence to realize the slurry discharge operation.

[0034] When the slurry needs to be directed to the left side of the construction position, the operator pulls the left-side rope, driving the left-side sleeve plate 23 to move to the left simultaneously. This displacement is transmitted to the steel plate 5, which is fixedly connected to the material pipe 9, through the elastic telescopic rod 22, causing the steel plate 5 to move to the left. At the same time, the bottom of the steel plate 5 rolls to the left along the support rail 4 via the pulley 6 mounted on the wheel frame, ensuring that the displacement process of the steel plate 5 and the material pipe 9 is smooth and stable.

[0035] If pulley 6 becomes stuck in the support rail 4 due to small pieces of material and cannot move, when the operator continues to pull the rope to the left, steel plate 5 will be restricted by pulley 6 and cannot move synchronously, resulting in a relative force between steel plate 5 and sleeve plate 23. This relative force causes the output end of elastic telescopic rod 22 to extend outward, while simultaneously causing one side of the limiting plate 25 to lose its original contact surface, thus generating a tendency to deflect towards steel plate 5.

[0036] In its initial state, the limiting plate 25 is pressed and adhered to the outer side of the steel plate 5 and the T-shaped plate 21 on both sides, forming a force balance. As the limiting plate 25 gradually moves away from the steel plate 5, the above force balance is broken, eventually causing the limiting plate 25 to deflect towards the steel plate 5. Under the compression force of the return spring 17, the T-shaped plate 21 simultaneously drives the bending strip 20 and the first sealing plate 15 to move towards the material tube 9.

[0037] When the No. 1 sealing plate 15 moves along the No. 1 bottom inclined frame 14 toward the center of the material tube 9, the No. 1 rack 12, which is fixedly connected to the outside of the No. 1 sealing plate 15, will slide into the gear rack box 11. At this time, the No. 2 rack 13 will move synchronously along the No. 2 bottom inclined frame 18 toward the center of the material tube 9, along with the No. 2 sealing plate 19, which is fixedly connected to the other end of the rack. Then the fitting plate 26 and the No. 2 sealing plate 19 move to the center of the material tube 9 and are inserted into each other, thereby achieving the sealing treatment of the material tube 9.

[0038] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A grout discharge device for shield tunnel construction, characterized in that, include: An operating panel is used to support the grouting device. A ladder and a grout observation platform are fixedly installed on its top. The grout observation platform is used to observe the grout level in order to control the grout volume. A support rail is fixedly installed at the top of the ladder, and the end of the support rail away from the ladder is fixedly connected to the pulp observation platform. A steel plate is used to support the slurry discharge pipeline and can adjust the bottom slurry discharge position. An adapter hole is opened in the center of the steel plate, and a material pipe is installed in the adapter hole. A tough tube is fixedly connected to the top of the material pipe, and the top of the tough tube is fixedly connected to an external pipeline.

2. The grout discharge device for shield tunnel construction according to claim 1, characterized in that: The bottom of the steel plate is rotatably mounted with a pulley via a wheel frame, and the bottom of the pulley slides and adapts to the track inside the support rail.

3. The grout discharge device for shield tunnel construction according to claim 1, characterized in that: Both ends of the steel plate are fixedly connected to support plates, and the outer sides of the support plates and the support rails are fitted with limiters to prevent the steel plate from falling off.

4. A grout discharge device for shield tunnel construction according to claim 1, characterized in that: A gear and rack box is fixedly installed on the outside of the material tube. A gear is installed in the center of the gear and rack box through a shaft. A first rack and a second rack are respectively installed on both sides of the gear for transmission.

5. A grout discharge device for shield tunnel construction according to claim 4, characterized in that: A bottom inclined frame is fixedly installed on the outside of the material tube. A sealing plate is slidably fitted inside the bottom inclined frame. The outside of the sealing plate is fixedly connected to the rack.

6. A grout discharge device for shield tunnel construction according to claim 5, characterized in that: A second bottom inclined frame is fixedly installed on the side of the material pipe away from the first bottom inclined frame. A second sealing plate is slidably fitted inside the second bottom inclined frame, and the outer side of the second sealing plate is fixedly connected to the second rack.

7. A grout discharge device for shield tunnel construction according to claim 6, characterized in that: The bottom of both the No. 1 sealing plate and the No. 2 sealing plate are fixedly connected to a base plate. A reset spring is fixedly connected to the outer side of the base plate. The end of the reset spring away from the base plate is fixedly connected to the outer side of the No. 1 bottom inclined frame. A fitting plate is fixedly connected to the outer end face of the No. 1 sealing plate.

8. A grout discharge device for shield tunnel construction according to claim 5, characterized in that: A bending strip is fixedly connected to the outer side of the No. 1 sealing plate, and a T-shaped plate is fixedly connected to the end of the bending strip away from the No. 1 sealing plate. Both ends of the steel plate are provided with fitting grooves, and elastic telescopic rods are fixedly installed in the fitting grooves. A sleeve plate is fixedly connected to the end of the elastic telescopic rod away from the steel plate, and the sleeve plate is connected to an external pull rope.

9. A grout discharge device for shield tunnel construction according to claim 8, characterized in that: A support is fixedly connected to the bottom of the output end of the elastic telescopic rod. A fixed shaft is fixedly connected inside the support. A limit plate is rotatably installed on the outside of the fixed shaft. One side of the limit plate is pressed and adapted to the steel plate, and the other side is pressed and adapted to the T-shaped plate.

10. A grout discharge device for shield tunnel construction according to claim 7, characterized in that: The material tube is internally fixedly connected with a resilient pad; The outer end face of the second sealing plate is provided with a square groove, and an elastic sheet is fixedly connected in the square groove. The square groove fits properly with the interlocking plate.

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