Pipe jacking receiving well outlet reinforcing structure
The reinforced structure, consisting of support plates, steel pipes, and inclined plates, dynamically seals and distributes the load, solving the sealing and stability problems at the outlet of the pipe jacking receiving well, and improving the stability and quality of pipe jacking construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-03-31
AI Technical Summary
The sealing and robustness of the existing pipe jacking receiving well outlet are easily compromised, leading to mud and water flowing into the receiving well and insufficient structural stability, which has a significant impact, especially in complex geological formations and urban pipeline projects.
The reinforced structure consists of support plates, steel pipes, inclined plates, and electric actuators. Through the cooperation of multi-layer sealing and support frames, it dynamically adapts to the movement of the jacking pipe, reduces mud leakage, and disperses the load through cylinders and pressure plates, thereby improving the structural stability.
It effectively prevents mud leakage when the pipe jacking slides, reduces structural damage, improves the stability and construction quality of the exit, and reduces the risk of structural deformation.
Smart Images
Figure CN224064958U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pipe jacking construction engineering, specifically a reinforcement structure for the outlet of a pipe jacking receiving well. Background Technology
[0002] Pipe jacking is a trenchless underground pipeline laying technology. It involves using jacking equipment in a working shaft to push prefabricated pipes section by section into the soil layer, while simultaneously removing soil from the pipe, thus enabling the laying of underground pipelines without excavating the ground.
[0003] The reinforcement structure at the exit of the pipe jacking receiving well is a key component in ensuring the safe exit of the pipe jacking machine during pipe jacking construction. It mainly prevents soil collapse, groundwater leakage, and ground settlement by reinforcing the soil around the exit, installing water-stopping devices, and setting up temporary support structures. This structure needs to be custom-designed according to the pipe diameter and geological conditions to ensure the stability and sealing of the pipe jacking machine when it exits the tunnel. It is widely used in complex strata such as water-rich soft soil and sandy layers, as well as in urban pipeline projects that are sensitive to environmental impact.
[0004] The existing pipe jacking well outlet relies on a pre-reserved hole formed by the curing of pre-reserved concrete. As the pipe jacking construction time extends, its sealing and firmness are easily compromised. Therefore, a reinforcement structure for the outlet of the pipe jacking well is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A reinforcement structure for the outlet of a pipe jacking receiving well, comprising a support plate; a first support frame is fixedly connected to the top side wall of the support plate; a steel pipe is fixedly connected to the middle of the first support frame; a circular hole is opened in the middle of the steel pipe; multiple sets of first electric actuators are hinged to the side wall of the circular hole; the first electric actuators are evenly distributed on the side wall of the circular hole; an inclined plate is hinged to the top of the first electric actuator; the bottom end of the inclined plate is hinged to the side wall of the circular hole; guide openings are opened at the top of the multiple sets of inclined plates; the structure is reinforced by the multiple sets of inclined plates and the top... The pipe sidewalls are in close contact, forming a multi-layer seal that prevents residual mud from leaking out during pipe jacking. When the pipe jacking pushes the first electric push rod to apply pressure to the inclined plate, the inclined plate will continue to stick to the pipe jacking, dynamically adapting to the movement of the pipe jacking, reducing the inflow of mud and water into the receiving well due to the gap between the pipe jacking and the tunnel opening. After the support plate and steel pipe are fixed as a whole, together with the sealing treatment on the side of the first support frame, a stable reinforced frame is formed. During the pipe jacking process, the cooperation between the first electric push rod and the inclined plate plays a sealing role, dispersing the impact force when the pipe jacking is pushed out, and reducing damage to the tunnel opening structure due to uneven stress.
[0007] Preferably, a pair of fixed seats are fixedly connected to the side wall of the steel pipe; the fixed seats are symmetrically arranged on the surface of the steel pipe; a cylinder is fixedly connected to the top of the fixed seat; a pressure plate is fixedly connected to the output end of the cylinder; the cylinder drives the pressure plate to contact the ground, thereby providing secondary reinforcement to the steel pipe from the bottom. This can transfer part of the load generated during the construction of the steel pipe and the jacking pipe to the ground, disperse the stress on the opening structure, reduce the displacement or tilting of the steel pipe caused by the horizontal thrust during the jacking pipe advancement, improve the stability of the opening during the construction process, and reduce the risk of structural deformation.
[0008] Preferably, a pair of sealing gaskets are fixed to the side wall of the inclined plate; the sealing gaskets are correspondingly arranged with the inclined plate; the elastic material of the sealing gaskets deforms and tightly fits the gap of the inclined plate, reducing the leakage of mud fluid from the side of the inclined plate and further increasing the sealing performance of the side of the inclined plate.
[0009] Preferably, a second electric push rod is fixedly connected to the top of the support plate; the second electric push rod is located on one side of the support plate; a second support frame is fixedly connected to the top of the second electric push rod; a rotating wheel is rotatably connected to the middle of the second support frame; the rotation of the rotating wheel causes the jacking pipe to roll and rub against the circular hole, reducing the front-end resistance of the jacking pipe when it enters the circular hole; the second electric push rod cooperates with the rotating wheel to adjust the moving angle of the jacking pipe, and can continuously provide support and guidance.
[0010] Preferably, multiple sets of leakage holes are provided at the bottom end of the steel pipe; the leakage holes are evenly distributed at the bottom end of the steel pipe; a collection box is fixedly connected to the side wall of the first support frame; a pipe is fixedly connected to the side wall of the collection box; the pipe is connected to the middle of the leakage hole near the side of the steel pipe; by having multiple sets of leakage holes evenly distributed at the bottom end of the steel pipe, a mud guide channel is formed, which can guide the mud flowing out from the gaps in the side wall of the inclined plate and make it flow into the interior of the collection box, reducing the accumulation of a lot of mud at the bottom of the round hole and reducing the erosion of the steel pipe by the mud.
[0011] Preferably, a pair of third support frames are fixedly connected to the side wall of the second support frame; the third support frames are symmetrically arranged on the side wall of the second support frame; a damping spring telescopic rod is fixedly connected to the side wall of the third support frame; a top plate is fixedly connected to the top of the damping spring telescopic rod; the symmetrically arranged top plates can apply a balanced pushing force to both sides of the jacking pipe. When the jacking pipe deviates, the top plate on the deviated side will automatically adjust the pushing force due to the squeezing of the jacking pipe, forcing the jacking pipe to return to the center position of the circular hole, thereby improving the construction quality of the jacking pipe exiting the hole.
[0012] The advantages of this utility model are:
[0013] 1. The present invention discloses a reinforcement structure for the outlet of a pipe jacking receiving well. Multiple sets of inclined plates are in close contact with the sidewall of the pipe jacking, forming a multi-layered seal to prevent residual mud from leaking out during pipe jacking. When the pipe jacking pushes the first electric push rod to apply pressure to the inclined plates, the inclined plates remain in close contact with the pipe jacking, dynamically adapting to the movement of the pipe jacking and reducing the influx of mud and water into the receiving well due to the gap between the pipe jacking and the outlet. After the support plate and steel pipe are fixed as a whole, combined with the sealing treatment on the side of the first support frame, a stable reinforcement frame is formed. During the pipe jacking process, the cooperation between the first electric push rod and the inclined plates plays a sealing role, dispersing the impact force when the pipe jacks out, and reducing damage to the outlet structure due to uneven stress.
[0014] 2. The present invention describes a reinforcement structure for the outlet of a pipe jacking receiving well. By using a cylinder to drive a pressure plate to contact the ground, the steel pipe is reinforced from the bottom. This can transfer part of the load generated during the construction of the steel pipe and the pipe jacking to the ground, disperse the stress on the outlet structure, reduce the displacement or tilting of the steel pipe caused by the horizontal thrust during pipe jacking, improve the stability of the outlet during construction, and reduce the risk of structural deformation. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the main body of this utility model;
[0017] Figure 2 This is a schematic diagram of the inclined plate in this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the rotating wheel in this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the leakage hole in this utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the pressure plate of this utility model.
[0021] In the diagram: 1. Support plate; 11. First support frame; 12. Steel pipe; 13. First electric actuator; 14. Inclined plate; 15. Guide opening; 16. Round hole; 2. Fixed seat; 21. Cylinder; 22. Pressure plate; 3. Sealing gasket; 4. Second electric actuator; 41. Second support frame; 42. Rotary wheel; 5. Leakage hole; 51. Central box; 52. Pipe; 6. Third support frame; 61. Damping spring telescopic rod; 62. Top plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 5 As shown in the embodiment of this utility model, a reinforcement structure for the outlet of a pipe jacking receiving well includes a support plate 1; a first support frame 11 is fixedly connected to the top side wall of the support plate 1; a steel pipe 12 is fixedly connected to the middle of the first support frame 11; a circular hole 16 is opened in the middle of the steel pipe 12; multiple sets of first electric actuators 13 are hinged to the side wall of the circular hole 16; the first electric actuators 13 are evenly distributed on the side wall of the circular hole 16; an inclined plate 14 is hinged to the top of the first electric actuator 13; and the bottom end of the inclined plate 14... Hinged to the side wall of the circular hole 16; guide openings 15 are provided at the top of the multiple sets of inclined plates 14; during operation, the support plate 1 is moved to the position where the jacking pipe is ejected. After the support plate 1 is moved to the designated position, the side of the first support frame 11 is sealed. After the support plate 1 and the steel pipe 12 are fixed as a whole, the jacking pipe passes through the middle of the circular hole 16. When the jacking pipe passes through, the side wall of the jacking pipe contacts the multiple sets of inclined plates 14, sealing and sliding around the jacking pipe. When the jacking pipe continues to move and eject, it pushes the first electric push rod 13 to continuously tilt. The inclined plate 14 applies pressure, ensuring it remains tightly pressed against the sidewall of the jacking pipe. Residual mud from the jacking pipe during sliding falls through the gaps in the sidewall of the inclined plate 14, further reducing pressure on the jacking pipe at the exit point. Multiple sets of inclined plates 14 and the first electric actuator 13 work together to gradually attenuate the mud pressure gradient, ultimately moving the jacking pipe to the top of the steel pipe 12. The close contact between multiple sets of inclined plates 14 and the sidewall of the jacking pipe forms a multi-layered seal, preventing leakage of residual mud during jacking pipe sliding. When the jacking pipe pushes the first electric actuator... When the push rod 13 applies pressure to the inclined plate 14, the inclined plate 14 will continuously adhere to the jacking pipe, dynamically adapting to the movement of the jacking pipe, reducing the influx of mud and water into the receiving well caused by the gap between the jacking pipe and the opening. After the support plate 1 and the steel pipe 12 are fixed as a whole, they are combined with the sealing treatment on the side of the first support frame 11 to form a stable reinforced frame. During the jacking process, the cooperation between the first electric push rod 13 and the inclined plate 14 plays a sealing role, dispersing the impact force when the jacking pipe is pushed out, and reducing the damage to the opening structure due to uneven stress.
[0025] like Figure 1 and Figure 5As shown, a pair of fixed seats 2 are fixedly connected to the side wall of the steel pipe 12; the fixed seats 2 are symmetrically arranged on the surface of the steel pipe 12; a cylinder 21 is fixedly connected to the top of the fixed seat 2; a pressure plate 22 is fixedly connected to the output end of the cylinder 21; during operation, after the first support frame 11 and the steel pipe 12 are fixed in the jacking pipe moving position, the pair of cylinders 21 can be pushed, and the cylinders 21 drive the pressure plate 22 to move towards the bottom of the support plate 1, so that the pressure plate 22 contacts the ground. After the pair of pressure plates 22 contacts the ground, the steel pipe 12 can be further stabilized as a whole; by the cylinders 21 driving the pressure plate 22 to contact the ground, the steel pipe 12 is reinforced from the bottom, which can transfer part of the load generated during the construction of the steel pipe 12 and the jacking pipe to the ground, disperse the force on the opening structure, reduce the displacement or tilting of the steel pipe 12 caused by the horizontal thrust during the jacking pipe advancement, improve the stability of the opening during the construction process, and reduce the risk of structural deformation.
[0026] like Figure 2 As shown, a pair of sealing gaskets 3 are fixed to the side wall of the inclined plate 14; the sealing gaskets 3 are correspondingly arranged with the inclined plate 14; during operation, when the jacking pipe moves from the middle of the guide port 15, the inclined plate 14 is retracting, and the pair of sealing gaskets 3 on the side wall of the inclined plate 14 can further prevent mud from flowing out from the gap of the inclined plate 14; by the deformation of the elastic material of the sealing gaskets 3 to tightly fit the gap of the inclined plate 14, the leakage of mud fluid from the side of the inclined plate 14 is reduced, and the sealing performance of the side of the inclined plate 14 is further increased.
[0027] like Figure 1 and Figure 3 As shown, a second electric push rod 4 is fixedly connected to the top of the support plate 1; the second electric push rod 4 is located on one side of the support plate 1; a second support frame 41 is fixedly connected to the top of the second electric push rod 4; a rotating wheel 42 is rotatably connected to the middle of the second support frame 41; during operation, when the jacking pipe enters the middle of the circular hole 16, it can first move to above the second electric push rod 4, so that the jacking pipe contacts the rotating wheel 42, causing the jacking pipe to rotate by friction with the rotating wheel 42 during movement, pushing the second electric push rod 4 to further adjust the height of the jacking pipe when entering the circular hole 16; the rotation of the rotating wheel 42 causes the jacking pipe to roll and rub when entering the circular hole 16, reducing the front-end resistance of the jacking pipe when entering the circular hole 16; the second electric push rod 4 and the rotating wheel 42 cooperate to adjust the moving angle of the jacking pipe, continuously providing support and guidance.
[0028] like Figure 2 and Figure 4As shown, multiple sets of leakage holes 5 are opened at the bottom end of the steel pipe 12; the leakage holes 5 are evenly distributed at the bottom end of the steel pipe 12; a collection box 51 is fixedly connected to the side wall of the first support frame 11; a pipe 52 is fixedly connected to the side wall of the collection box 51; the pipe 52 is connected to the middle of the leakage hole 5 near the side of the steel pipe 12; during operation, when the jacking pipe slides from the middle of the guide port 15, the mud flows out from the side wall of the inclined plate 14, and the mud flowing out can flow out from the middle of the multiple sets of leakage holes 5. The mud flowing out from the leakage holes 5 can drip into the inside of the collection box 51, or it can flow into the inside of the collection box 51 from the pipe 52; through the multiple sets of leakage holes 5 evenly distributed at the bottom end of the steel pipe 12, a mud guide channel is formed, which can guide the mud flowing out from the gap of the side wall of the inclined plate 14 and let it flow into the inside of the collection box 51, reducing the accumulation of a lot of mud at the bottom of the round hole 16 and reducing the erosion of the steel pipe 12 by the mud.
[0029] like Figure 3 As shown, a pair of third support frames 6 are fixedly connected to the side wall of the second support frame 41; the third support frames 6 are symmetrically arranged on the side wall of the second support frame 41; a damping spring telescopic rod 61 is fixedly connected to the side wall of the third support frame 6; a top plate 62 is fixedly connected to the top of the damping spring telescopic rod 61; during operation, when the jacking pipe moves above the rotating wheel 42, the pair of top plates 62 on the side of the third support frame 6 can continuously apply a pushing force to the top plate 62, so that the jacking pipe is stable at the center position of the circular hole 16 when it moves; the symmetrically arranged top plates 62 can apply a balanced pushing force to both sides of the jacking pipe. When the jacking pipe deviates, the top plate 62 on the deviated side will automatically adjust the pushing force due to the jacking pipe squeezing, forcing the jacking pipe to reset to the center position of the circular hole 16, thus improving the construction quality of the jacking pipe exiting the hole.
[0030] Working principle: The support plate 1 is moved to the jacking pipe ejection position. After the support plate 1 is moved to the designated position, it seals the side of the first support frame 11. After the support plate 1 and the steel pipe 12 are fixed as a whole, the jacking pipe passes through the middle of the round hole 16. When the jacking pipe passes through, the side wall of the jacking pipe contacts multiple sets of inclined plates 14, sealing and sliding around the jacking pipe. When the jacking pipe continues to move and eject, it pushes the first electric push rod 13 to continuously apply pressure to the inclined plates 14, which can make the inclined plates 14 continuously and tightly adhere to the jacking pipe. The mud remaining on the sidewall of the pipe during sliding will fall through the gaps in the sidewall of the inclined plate 14, further reducing the pressure on the pipe at the exit of the tunnel. Multiple sets of inclined plates 14 and the first electric actuator 13 work together to gradually attenuate the mud pressure gradient, eventually moving the pipe to the top of the steel pipe 12. After the first support frame 11 and the steel pipe 12 are fixed in the moving position of the pipe, a pair of cylinders 21 can be pushed. The cylinders 21 drive the pressure plate 22 to move towards the bottom of the support plate 1, so that the pressure plate 22 contacts the ground. After the pressure plate 22 contacts the ground, it can further stabilize the steel pipe 12 as a whole. When the jacking pipe moves from the middle of the guide port 15, the inclined plate 14 retracts and moves. The pair of sealing gaskets 3 on the side wall of the inclined plate 14 can further prevent the mud from flowing out from the gap of the inclined plate 14. When the jacking pipe enters the middle of the round hole 16, it can first move to the top of the second electric push rod 4, so that the jacking pipe contacts the rotating wheel 42, so that the jacking pipe rotates with friction against the rotating wheel 42 when it moves. Pushing the second electric push rod 4 can further adjust the jacking pipe. When the pipe enters the circular hole 16, the slurry flows out from the side wall of the inclined plate 14 as the jacking pipe slides from the middle of the guide port 15. The slurry can flow out from the middle of the multiple sets of leakage holes 5. The slurry flowing out from the leakage holes 5 can drip into the collection box 51 or flow into the collection box 51 from the pipe 52. When the jacking pipe moves above the rotating wheel 42, a pair of top plates 62 on the side of the third support frame 6 can continuously apply a pushing force to the top plates 62, so that the jacking pipe is stable at the center position of the circular hole 16 when it moves.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A pipe jacking receiving shaft exit opening reinforcement structure, characterized by: Including support plate (1), first support frame (11) is fixedly connected to the top end side wall of the support plate (1), steel pipe (12) is fixedly connected to the middle part of the first support frame (11), round hole (16) is formed in the middle part of the steel pipe (12), a plurality of first electric push rods (13) are hingedly connected to the side wall of the round hole (16), the first electric push rods (13) are uniformly distributed on the side wall of the round hole (16), the top end of the first electric push rod (13) is hingedly connected with an inclined plate (14), the bottom end of the inclined plate (14) is hingedly connected with the side wall of the round hole (16), and the top end of the inclined plate (14) is provided with a guide port (15).
2. The pipe jacking receiving well hole exit reinforcing structure according to claim 1, characterized in that: A pair of fixed seats (2) are fixedly connected to the side wall of the steel pipe (12), the fixed seats (2) are symmetrically arranged on the surface of the steel pipe (12), a gas cylinder (21) is fixedly connected to the top end of the fixed seat (2), and a pressing plate (22) is fixedly connected to the output end of the gas cylinder (21).
3. The pipe jacking receiving well hole exit reinforcing structure according to claim 2, characterized in that: A pair of sealing gaskets (3) are fixedly connected to the side wall of the inclined plate (14), and the sealing gaskets (3) are arranged correspondingly to the inclined plate (14).
4. The pipe jacking receiving well hole exit reinforcing structure according to claim 3, characterized in that: The top end of the support plate (1) is fixedly connected with a second electric push rod (4), the second electric push rod (4) is arranged on one side of the support plate (1), the top end of the second electric push rod (4) is fixedly connected with a second support frame (41), and a rotating wheel (42) is rotatably connected to the middle part of the second support frame (41).
5. The pipe jacking receiving well hole exit reinforcing structure according to claim 4, characterized in that: A plurality of leakage holes (5) are formed in the bottom end of the steel pipe (12), the leakage holes (5) are uniformly distributed in the bottom end of the steel pipe (12), a concentration box (51) is fixedly connected to the side wall of the first support frame (11), a pipeline (52) is fixedly connected to the side wall of the concentration box (51), and the pipeline (52) is connected to the middle part of the leakage hole (5) close to one side of the steel pipe (12).
6. The pipe jacking receiving well hole exit reinforcing structure according to claim 5, characterized in that: A pair of third support frames (6) are fixedly connected to the side wall of the second support frame (41), the third support frames (6) are symmetrically arranged on the side wall of the second support frame (41), a damping spring telescopic rod (61) is fixedly connected to the side wall of the third support frame (6), and a top plate (62) is fixedly connected to the top end of the damping spring telescopic rod (61).