A slurry balance pipe jacking machine

Abstract

The utility model provides a kind of slurry water balance pipe jacking machine, caisson bottom plate is located at the bottom of working well, and guide table is poured above caisson bottom plate, the arc surface corresponding to pipe jacking is on the upper surface of guide table, and annular welding passage corresponding to pipe jacking is equipped in the middle of guide table;Steel backrest is fixed in the steel plate of working well side wall, and two rows of jacking oil cylinder are equipped in the side corresponding to jacking direction of steel backrest;Annular jacking iron corresponding to pipe jacking is equipped in the side of U-shaped jacking iron away from jacking oil cylinder. Through the arc surface on guide table, guide rail, adjusting oil cylinder and the design of positioning ring and conical guide mouth on annular jacking iron, accurate guidance and positioning can be provided for pipe jacking, effectively reduce the deviation of pipe jacking in jacking process, and improve jacking guidance precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe jacking construction, specifically relating to a slurry balance pipe jacking machine. Background Technology

[0002] In underground pipeline laying and other projects, pipe jacking technology is widely used due to its advantages such as not requiring ground excavation and having minimal impact on the surrounding environment. Slurry balance pipe jacking is a common type of pipe jacking construction, which uses slurry pressure to balance the ground pressure, enabling the smooth advancement of the pipe.

[0003] However, existing slurry balance pipe jacking equipment has some problems in practical applications. For example, the guiding accuracy of the jacking pipe is difficult to guarantee during the jacking process, and deviation is prone to occur.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a slurry balance pipe jacking machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A slurry balance pipe jacking machine includes: The caisson base plate is located at the bottom of the working shaft. A guide platform is cast above the caisson base plate. The upper surface of the guide platform is an arc-shaped surface corresponding to the jacking pipe. A circumferential welding channel corresponding to the jacking pipe is provided in the middle of the guide platform. The steel backrest is a steel plate fixed to the side wall of the working well, and two rows of jacking cylinders are provided on one side of the steel backrest corresponding to the jacking direction. A U-shaped top iron, with a corresponding annular top iron on the side of the U-shaped top iron away from the jacking cylinder.

[0007] Preferably, the guide platform is provided with guide rails symmetrically distributed on both sides of the center line of the guide platform, and multiple adjusting cylinders corresponding to the jacking pipe are distributed on both sides of the guide rails.

[0008] Preferably, the U-shaped top iron is provided with a corresponding guide rail groove below it, the groove being dovetail-shaped to correspond to the guide rail, so as to slide along the guide rail.

[0009] Preferably, a measuring instrument pointing towards the inside of the jacking tube is provided between the jacking cylinders, and the measuring instrument is located between the steel backrest and the U-shaped jacking iron.

[0010] Preferably, the annular top iron is provided with a positioning ring corresponding to the inside and outside of the top pipe at one end, and the inner wall of the positioning ring is provided with a conical guide nozzle corresponding to the top pipe.

[0011] Preferably, the steel backrest is provided with anchoring steel bars extending into the side wall of the working well on the side closest to the steel backrest, and concrete is filled between the steel backrest and the working well.

[0012] Preferably, a concrete ring corresponding to the jacking pipe is provided on the side of the working well facing the steel backrest, and a water-stopping structure corresponding to the jacking pipe is provided on the concrete ring.

[0013] Beneficial effects: The design of the arc-shaped surface on the guide platform, the guide rail, the adjusting cylinder, and the positioning ring and conical guide nozzle on the annular top iron can provide precise guidance and positioning for the jacking pipe, effectively reducing the deviation of the jacking pipe during the jacking process and improving the jacking guidance accuracy.

[0014] The circumferential welding channel in the middle of the guide platform facilitates circumferential welding of the jacking pipe during the jacking process, ensuring the continuity and sealing of the jacking pipe and reducing construction procedures and time. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein: Figure 1 This is a simplified structural diagram of the jacking device in a specific embodiment of this utility model; Figure 2 This is a simplified structural diagram of the water-stopping structure in a specific embodiment of this utility model.

[0016] In the diagram: 1. Caisson bottom plate; 2. Guide platform; 3. Working well; 4. Steel backrest; 5. Water-stopping structure; 6. Jacking cylinder; 7. U-shaped jacking iron; 8. Annular jacking iron; 9. Positioning ring; 10. Measuring instrument; 11. Guide rail; 501. Concrete ring; 502. Ring plate; 503. Steel sleeve; 504. Anchor bolt; 505. First sealing ring; 506. Sealing sleeve; 507. Second sealing ring; 508. First sealing ring; 509. Sleeve; 510. Second sealing ring; 511. Third sealing ring. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0018] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] like Figure 1-2 As shown, a slurry-balanced pipe jacking machine includes a caisson base plate 1, a steel backrest 4, and a U-shaped jacking iron 7. The caisson base plate 1 is located at the bottom of the working shaft 3 and is formed by cast-in-place concrete to provide foundation support for the entire jacking equipment. A guide platform 2 is cast above the caisson base plate 1. The upper surface of the guide platform 2 is designed as an arc-shaped surface corresponding to the jacking pipe. This arc-shaped surface can fit well with the outer wall of the jacking pipe, providing stable support and guidance for the jacking pipe. A circumferential welding channel corresponding to the jacking pipe is provided in the middle of the guide platform 2, which facilitates circumferential welding operations on the jacking pipe during the jacking process, ensuring the continuity and sealing of the jacking pipe. The steel backrest 4 is a steel plate fixed to the side wall of the working well 3, serving as the rear seat of the jacking cylinder 6 and bearing the enormous reaction force generated during the jacking process. Two rows of jacking cylinders 6 are provided on one side of the steel backrest 4 corresponding to the jacking direction; the two rows of jacking cylinders 6 are located on both sides of the jacking pipe, with no fewer than two cylinders in each row, thus providing a uniform and powerful jacking force to ensure the smooth jacking of the pipe.

[0021] On the side of the U-shaped top iron 7 away from the jacking cylinder 6, there is a corresponding annular top iron 8 for the jacking pipe. The width of the U-shaped top iron 7 is adapted to the diameter of the jacking pipe. The U-shaped top iron 7 plays the role of transmitting the jacking force during the jacking process. The annular top iron 8 can fit well with the end of the jacking pipe, transmit the jacking force evenly, and avoid damage to the end of the jacking pipe due to uneven force.

[0022] Furthermore, guide rails 11 are symmetrically distributed on both sides of the center line of the guide platform 2. The guide rails 11 are of I-beam structure and serve as sliding tracks for the jacking pipe. Below the U-shaped jacking iron 7, there is a corresponding groove for the guide rail 11. The groove is dovetail-shaped, which allows the U-shaped jacking iron 7 to slide stably along the guide rail 11, reducing swaying and offset during the sliding process and improving the jacking accuracy.

[0023] Multiple adjusting cylinders corresponding to the jacking pipe are distributed on both sides of the guide rail 11. By adjusting the extension and retraction of the cylinders, the position and attitude of the jacking pipe can be adjusted to ensure that the jacking pipe always maintains the correct direction during the jacking process and improve the jacking guidance accuracy. The annular jacking iron 8 is provided with a positioning ring 9 corresponding to the inside and outside of the jacking pipe at one end. The positioning ring 9 can accurately position the annular jacking iron 8 at the end of the jacking pipe to ensure the effective transmission of jacking force.

[0024] The inner wall of the positioning ring 9 is equipped with a conical guide nozzle corresponding to the jacking pipe. The conical guide nozzle can guide the jacking pipe during jacking, making it easier for the jacking pipe to enter the correct position and further improving the jacking guidance accuracy.

[0025] In an optional embodiment, a measuring instrument 10 pointing inwards is provided between the jacking cylinders 6, and the measuring instrument 10 is located between the steel backrest 4 and the U-shaped jacking iron 7. The measuring instrument 10 can monitor parameters such as the jacking distance and offset angle of the jacking pipe in real time, and feed the data back to the construction personnel so as to adjust the jacking parameters in a timely manner and ensure the accuracy and quality of the jacking pipe construction.

[0026] Specifically, the measuring instrument 10 can be a total station with observation points inside the pipe jacking system. This allows for real-time monitoring of parameters such as the jacking distance and offset angle during the jacking process, providing accurate construction information to construction personnel and facilitating timely adjustments to jacking parameters to improve construction efficiency and quality.

[0027] Anchoring bars extending into the side wall of the working well 3 are provided on the side of the steel backrest 4 closest to the steel backrest 4. These anchoring bars enhance the connection strength between the steel backrest 4 and the side wall of the working well 3, preventing displacement of the steel backrest 4 during jacking. Concrete is filled between the steel backrest 4 and the working well 3 to further reinforce the connection and improve the overall stability of the structure.

[0028] In an optional embodiment, a concrete ring corresponding to the jacking pipe is provided on the side of the working well 3 facing the steel backrest 4, and a water-stopping structure 5 corresponding to the jacking pipe is provided on the concrete ring.

[0029] The water-stopping structure 5 includes a steel sleeve 503, an anchor rod 504, and a first sealing ring 508. One end of the steel sleeve 503 abuts against the inner wall of the working well 3 corresponding to the jacking direction. The end of the steel sleeve 503 corresponding to the working well 3 is designed as an arc-shaped surface corresponding to the inner wall of the working well 3. The other end of the steel sleeve 503 is connected to an outwardly folded ring plate 502. The ring plate 502 and the steel sleeve 503 together form an annular casting groove corresponding to the outer wall of the jacking pipe. A concrete ring 501 is poured in the annular casting groove. During the pouring, formwork and scaffolding can be set up outside the annular casting groove, without too many restrictions.

[0030] Anchor bolt 504 passes through ring plate 502 and is connected to a locking nut, thereby enhancing the stability of the connection between the entire water-stop structure 5 and the working well 3 and the surrounding soil. Anchor bolt 504 extends into the external soil after passing through ring plate 502, concrete ring 501 and the well wall of working well 3. Grouting is performed through grouting holes at the part of anchor bolt 504 corresponding to the external soil to consolidate the external soil.

[0031] The inner diameter of the first sealing ring 508 is adapted to the outer diameter of the machine head, and the inner diameter of the first sealing ring 508 is adapted to the outer diameter of the machine head (or pipe section). A corresponding through hole for the anchor rod 504 is provided on the first sealing ring 508. After the anchor rod 504 passes through the through hole, a locking nut is threaded onto it. A first sealing rubber ring 505 is provided between the first sealing ring 508 and the ring plate 502. The first sealing ring 508 is fixed by the locking nut. The first sealing ring 508 is made of rubber, and its inner diameter is smaller than the outer diameter of the jacking pipe. A second sealing ring 510 is connected to the outside of the first sealing ring 508 via a sleeve 509. A third sealing ring 511 is fixed to the second sealing ring 510 by bolts. A second sealing rubber ring 507 is provided between the second sealing ring 510 and the third sealing ring 511. The second sealing rubber ring 507 has the same specifications as the first sealing rubber ring 505. The first sealing ring 508, the second sealing ring 510, and the third sealing ring 511 are all made of steel plate.

[0032] Furthermore, a sealing sleeve 506 is provided between the first sealing ring 508 and the second sealing ring 510. The outer diameter of the sealing sleeve 506 is adapted to the inner diameter of the second sealing ring 507 or the first sealing ring 505, and its length is adapted to the length of the sleeve 509, which can increase the contact area with the jacking pipe. The two ends of the sealing sleeve 506 are respectively provided with a first flange and a second flange for bonding the first sealing ring 508 and the second sealing ring 510, so that the sealing sleeve 506, the second sealing ring 507 or the first sealing ring 505 form a closed cavity. Multiple connecting pipes are connected to the outer circumference of the sleeve 509. The connecting pipes are connected to liquid or gas pressure pumps, so that gas or other filling liquids can be pumped in according to actual use, thereby adjusting the pressure so that the sealing sleeve 506 is installed at different pressures against the jacking pipe, thereby improving the compatibility performance.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A slurry balance pipe jacking machine characterized by, include: The caisson base plate is located at the bottom of the working shaft. A guide platform is cast above the caisson base plate. The upper surface of the guide platform is an arc-shaped surface corresponding to the jacking pipe. A circumferential welding channel corresponding to the jacking pipe is provided in the middle of the guide platform. A steel backrest, which is a steel plate fixed to the side wall of the working well, and two rows of jacking cylinders are provided on one side of the steel backrest corresponding to the jacking direction. A U-shaped top iron, with a corresponding annular top iron on the side of the U-shaped top iron away from the jacking cylinder; The guide platform is provided with guide rails symmetrically distributed on both sides of the center line of the guide platform, and multiple adjusting cylinders corresponding to the jacking pipe are distributed on both sides of the guide rails. The annular top iron is provided with a positioning ring corresponding to the inside and outside of the top pipe at one end, and the inner wall of the positioning ring is provided with a conical guide nozzle corresponding to the top pipe.

2. The slurry balance tunnel boring machine of claim 1, wherein, The U-shaped top iron is provided with a corresponding guide rail groove below it. The groove is dovetail-shaped and is designed to slide along the guide rail.

3. The slurry-balanced pipe jacking machine according to claim 1, characterized in that, A measuring instrument pointing inwards is provided between the jacking cylinders, and the measuring instrument is located between the steel backrest and the U-shaped jacking iron.

4. The slurry balance tunnel boring machine of claim 1, wherein, The steel backrest is provided with anchoring steel bars extending into the side wall of the working well on the side closest to the steel backrest, and concrete is filled between the steel backrest and the working well.

5. The slurry balance tunnel boring machine of claim 1, wherein, A concrete ring corresponding to the jacking pipe is provided on the side of the working well facing the steel backrest, and a water-stopping structure corresponding to the jacking pipe is provided on the concrete ring.

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