Pipe joint waterproof device for pipe jacking construction

Abstract

The utility model provides a pipe-jacking construction pipe joint waterproof device which comprises a retainer arranged between two jacking pipes, a butt joint table and a steel ring plate are arranged at the two ends of each jacking pipe respectively, the retainer is arranged on the butt joint table in a sleeved mode, a plurality of arc-shaped plates are arranged on the retainer in the circumferential direction, and the retainer and the arc-shaped plates are connected to form an inserting groove. The outer sides of the arc-shaped plates are connected through a first sealing ring, a plurality of driving rods are arranged on the inner side of the butt joint table, the driving rods are inserted into the inserting grooves, and the driving rods extrude the arc-shaped plates from the inner sides of the inserting grooves so that the first sealing ring can abut against the inner side of the butt joint table to form annular sealing. According to the utility model, the construction is convenient, the waterproof effect during pipe jacking construction can be greatly improved, and the stability and high efficiency of construction are ensured.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking construction technology, and in particular to a waterproof device for pipe sections in pipe jacking construction. Background Technology

[0002] Pipe jacking is a pipeline laying technology that requires little or no excavation and is widely used in municipal pipeline construction. Pipe jacking evolved from shield tunneling. The main process involves using the jacking force generated by the jacking equipment in the working pit to overcome the friction between the pipeline and the surrounding soil, pushing the pipeline into the ground at the designed slope, and then removing the excavated soil.

[0003] During construction, due to the precision errors in the manufacturing of the pipe itself, and the need to adjust the jacking pipe during construction, inaccurate insertion after adjustment can lead to gaps and water seepage. When the seepage is severe, a large area of ​​water can accumulate in the caisson, affecting the overall construction progress of the jacking pipe and increasing construction costs.

[0004] Chinese patent document CN 211925017 U describes a first set of intermediate leakage sealing device for pipe jacking section, but the device is inconvenient to use, complicated to install and dismantle, and has defects in use, and needs to be improved. Utility Model Content

[0005] This utility model provides a waterproof device for pipe sections in pipe jacking construction, which solves the technical problem of water seepage caused by gaps in the splicing process of two pipe jacking sections, resulting in low construction efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a waterproof device for pipe sections in pipe jacking construction, including a retainer set between two pipes, a docking platform and a steel ring plate respectively set at both ends of the pipe, the retainer being sleeved on the docking platform, and multiple arc-shaped plates arranged circumferentially on the retainer, the retainer and the arc-shaped plates being connected to form a slot, the outer sides of the multiple arc-shaped plates being connected by a first sealing ring, and multiple driving rods being provided on the inner side of the docking platform, the driving rods being inserted into the slots, and the arc-shaped plates being squeezed from the inner side of the slots by the driving rods, thereby abutting the first sealing ring against the inner side of the docking platform to form a circumferential seal.

[0007] In the preferred embodiment, the end face of the docking platform is further provided with a first annular groove, and the end face of the top pipe near the steel ring plate is provided with a second annular groove. The first annular groove and the second annular groove are sealed by a second sealing ring.

[0008] In a preferred embodiment, the cage includes a ring sleeve and a support ring. The support ring is sleeved on the mating platform, and multiple arc-shaped plates are arranged circumferentially on the support ring. The outer side of the ring sleeve and the inner side of the arc-shaped plates are connected to form a slot.

[0009] In a preferred embodiment, the arc-shaped plate includes a supporting part and a deformable part, with multiple through holes penetrating the deformable part, and a first sealing ring fitted on the outer side of the multiple arc-shaped plates.

[0010] In the preferred embodiment, the two sides of the arc plate are provided with protrusions, and the two opposite protrusions are connected to form an installation groove, and the inner side of the first sealing ring is fitted into the installation groove.

[0011] In the preferred embodiment, the two ends of the curved plate are respectively provided with chamfers, and the chamfers on two adjacent curved plates are connected to form a clearance opening.

[0012] In a preferred embodiment, a conical head is provided on one side of the drive rod, the outer diameter of the large end of the conical head is larger than the width of the slot, and the conical head abuts against the inner side of the arc plate.

[0013] In the preferred embodiment, the inner side of the steel ring plate is provided with multiple fixing holes, and the other side of the drive rod is provided with a screw. The screw is connected by a round rod and a conical head, and the screw is located in the fixing hole.

[0014] In the preferred embodiment, the outer diameter of the round rod is larger than the outer diameter of the screw.

[0015] In a preferred embodiment, a sealing part is provided at the lower part of the chamfer, and two adjacent sealing parts fit together.

[0016] The beneficial effects of this utility model are as follows: By setting docking platforms and steel ring plates on both sides of the jacking pipe, and installing retainers on the docking platforms, the first sealing ring set on the outer side of the arc plate on the retainer is squeezed and deformed under the action of the drive rod on the inner side of the steel ring plate, thereby abutting against the inner side of the steel ring plate, forming a stable sealing partition between the docking platforms and steel ring plates of two adjacent jacking pipes. Moreover, due to the lateral locking of the drive rod, it is ensured that it can withstand a large lateral pressure, which is convenient for construction and has a good sealing effect. At the same time, the first and second annular grooves set on the two end faces on both sides of the jacking pipe are sealed by the second sealing ring, which plays a secondary protection role and has good economic benefits. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the use of this utility model. Figure 1 ;

[0019] Figure 2 yes Figure 1 A diagram showing the view from the right.

[0020] Figure 3 This is a schematic diagram of the use of this utility model. Figure 2 ;

[0021] Figure 4 yes Figure 3 A diagram showing the view from the right.

[0022] Figure 5 yes Figure 3 Explosion structure diagram Figure 1 ;

[0023] Figure 6 yes Figure 3 Explosion structure diagram Figure 2 ;

[0024] Figure 7 yes Figure 1 Explosion structure diagram Figure 1 ;

[0025] Figure 8 yes Figure 1 Explosion structure diagram Figure 2 ;

[0026] Figure 9 This is a schematic diagram of the retainer mounting arc plate and the first sealing ring of this utility model. Figure 1 ;

[0027] Figure 10 yes Figure 9 A frontal view diagram;

[0028] Figure 11 yes Figure 9 A top-down view;

[0029] Figure 12 This is a schematic diagram of the retainer mounting arc plate and the first sealing ring of this utility model. Figure 2 ;

[0030] Figure 13 yes Figure 9 Explosion structure diagram Figure 1 ;

[0031] Figure 14 yes Figure 9 Explosion structure diagram Figure 2 ;

[0032] Figure 15 yes Figure 9 A schematic diagram of the arc-shaped plate structure;

[0033] Figure 16 yes Figure 15 A top-down view;

[0034] Figure 17 yes Figure 15 A diagram showing the view from the right.

[0035] Figure 18 yes Figure 15 A left-side view diagram.

[0036] In the figure: jacking pipe 1; docking platform 101; steel ring plate 102; first ring groove 103; second ring groove 104; fixing hole 105; retainer 2; ring sleeve 201; support ring 202; second sealing ring 3; first sealing ring 4; drive rod 5; screw 501; round rod 502; conical head 503; arc plate 6; support part 601; deformation part 602; through hole 603; protrusion 604; chamfer 605; mounting groove 606; slot 7; clearance opening 8; sealing part 9. Detailed Implementation

[0037] like Figure 1-4 In this invention, a waterproofing device for pipe sections in pipe jacking construction includes a retainer 2 disposed between two pipe jacking sections 1. A docking platform 101 and a steel ring plate 102 are respectively disposed at both ends of the pipe jacking section 1. The retainer 2 is fitted onto the docking platform 101. Multiple arc-shaped plates 6 are disposed circumferentially on the retainer 2. The retainer 2 and the arc-shaped plates 6 are connected to form a slot 7. The outer sides of the multiple arc-shaped plates 6 are connected by a first sealing ring 4. Multiple drive rods 5 are disposed on the inner side of the docking platform 101. The drive rods 5 are inserted into the slot 7. By pressing the arc-shaped plates 6 from the inner side of the slot 7 through the drive rods 5, the first sealing ring 4 is pressed against the inner side of the docking platform 101 to form a circumferential seal.

[0038] During pipe jacking construction, large gaps often form due to improper end-face fit between adjacent pipes 1, leading to water seepage. Significant seepage can even flow into the caisson, causing large-area water accumulation. This design addresses this by first fixing the retainer 2 to the docking platform 101 and sealing the gap between the retainer 2 and the docking platform 101. Then, the drive rod 5 is installed on the end face of the pipe 1 closest to the steel ring plate 102. During the insertion of the two pipes 1, the drive rod 5 gradually approaches the retainer 2 and slowly enters the slot 7, finally pressing the arc-shaped plate 6 to tightly fit the first sealing ring 4 against the lower side of the steel ring plate 102. This creates a stable and secure sealing barrier between the steel ring plate 102 and the docking platform 101 through the arc-shaped plate 6 on the retainer 2 and the first sealing ring 4, preventing water from the soil from entering the inner side of the pipe 1 through the gap between the two pipes 1, thus avoiding construction interruptions and facilitating construction.

[0039] like Figure 5-8 In the preferred embodiment, the end face of the docking platform 101 is further provided with a first annular groove 103, and the end face of the top pipe 1 near the steel ring plate 102 is provided with a second annular groove 104. The first annular groove 103 and the second annular groove 104 are sealed by a second sealing ring 3.

[0040] During the insertion process of the two jacking pipes 1, the two end faces of the two adjacent jacking pipes 1 are brought together. Due to the manufacturing error of the jacking pipe 1 itself and the error during installation, the second sealing ring 3 can be pre-installed and fixed on the end face of the jacking pipe 1 that has already been installed during construction. Then, when the two jacking pipes 1 are brought together, the second sealing ring 3 is squeezed. The flexible deformation of the second sealing ring 3 fills the gap between the two jacking pipes 1, ensuring the overall sealing effect. The second sealing ring 3 is a secondary seal, which is a supplement when the first sealing ring 4 partially or completely fails, and the overall safety is higher.

[0041] like Figure 9-14 In the preferred embodiment, the retainer 2 includes a ring 201 and a support ring 202. The support ring 202 is sleeved on the docking platform 101. Multiple arc-shaped plates 6 are arranged circumferentially on the support ring 202. The outer side of the ring 201 and the inner side of the arc-shaped plates 6 are connected to form a slot 7.

[0042] The inner diameter of the ring 201 is slightly larger than that of the docking platform 101. After the ring 201 is installed on the docking platform 101, the ring 201 and the docking platform 101 are initially fixed, and the gap between the ring 201 and the docking platform 101 is filled and sealed, thereby forming a stable sealing structure between the retainer 2 and the top tube 1. When installing the arc plate 6, it can be fixed to the support ring 202 by spot welding, which is convenient to operate and has a good locking effect.

[0043] like Figure 15-18 In the preferred embodiment, the arc-shaped plate 6 includes a support portion 601 and a deformable portion 602. Multiple through holes 603 are provided through the deformable portion 602, and a first sealing ring 4 is fitted onto the outer side of the multiple arc-shaped plates 6. Since the first sealing ring 4 completely covers the through holes 603 and partially covers the support portion, the overall sealing effect is good. During installation, the side of the first sealing ring 4 closest to the support portion 601 is firmly fixed to the support portion 601. Because multiple through holes 603 are provided, the deformable portion 602 can deform under external pressure, thereby pushing the first sealing ring 4 against the inner side of the steel ring plate 102.

[0044] In the preferred embodiment, the two sides of the arc plate 6 are respectively provided with protrusions 604, and the two opposing protrusions 604 are connected to form an installation groove 606, and the inner side of the first sealing ring 4 is attached to the installation groove 606.

[0045] The protruding strip 604 serves to limit the first sealing ring 4, ensuring that the deformation direction of the first sealing ring 4 is normal to the vertical mounting groove 606, thereby improving the sealing effect and preventing the first sealing ring 4 from detaching from the arc plate 6.

[0046] In the preferred embodiment, the two ends of the arc plate 6 are respectively provided with chamfers 605, and the chamfers 605 on two adjacent arc plates 6 are connected to form a clearance opening 8.

[0047] By setting the chamfer 605, it is possible to ensure that the curved plate 6 does not interfere with the adjacent curved plate 6 during the outward folding process, and at the same time, it can reduce the overall deformation driving force, resulting in better performance.

[0048] In a preferred embodiment, a conical head 503 is provided on one side of the drive rod 5. The outer diameter of the large end of the conical head 503 is larger than the width of the slot 7, and the conical head 503 abuts against the inner side of the arc plate 6.

[0049] As the conical surface of the conical head 503 approaches the lower part of the arc plate 6, it continuously applies axial compression to the arc plate 6, thereby forcing the arc plate 6 to deform. Since the first sealing ring 4 itself is flexible and made of rubber, it can change within a certain range. The arc plate 6 is made of metal, which has a certain strength while ensuring toughness, thus achieving the purpose of sealing well.

[0050] In the preferred embodiment, the inner side of the steel ring plate 102 is provided with a plurality of fixing holes 105, and the other side of the drive rod 5 is provided with a screw 501. The screw 501 is connected to the round rod 502 and the conical head 503, and the screw 501 is located in the fixing hole 105.

[0051] During construction, threaded sleeves can be pre-embedded on the jacking pipe 1 to facilitate the quick installation and adjustment of the drive rod 5, making it easier to make adjustments later.

[0052] In the preferred embodiment, the outer diameter of the round rod 502 is larger than that of the screw 501. This ensures high installation accuracy of the drive rod 5. During installation, the end of the round rod 502 abuts against the end face of the top pipe 1, thus ensuring that the exposed length of all drive rods 5 in the circumferential direction is the same, synchronously driving the arc plate 6 at different positions and angles, resulting in more precise alignment.

[0053] In the preferred embodiment, a sealing part 9 is provided at the lower part of the chamfer 605, and two adjacent sealing parts 9 are fitted together. The sealing parts 9 are connected by spot welding to ensure the overall sealing effect. Since the first sealing ring 4 covers the position above the sealing part 9, it can work together with the first sealing ring 4 to form a fully effective sealing barrier.

[0054] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A waterproofing device for pipe sections used in pipe jacking construction, characterized in that: The device includes a retainer (2) disposed between two jacking pipes (1). The two ends of the jacking pipe (1) are respectively provided with a docking platform (101) and a steel ring plate (102). The retainer (2) is sleeved on the docking platform (101). Multiple arc plates (6) are provided on the retainer (2) along the circumferential direction. The retainer (2) and the arc plates (6) are connected to form a slot (7). The outer sides of the multiple arc plates (6) are connected by a first sealing ring (4). Multiple drive rods (5) are provided on the inner side of the docking platform (101). The drive rods (5) are inserted into the slot (7). The drive rods (5) squeeze the arc plates (6) from the inner side of the slot (7) to form a circumferential seal by pressing the first sealing ring (4) against the inner side of the docking platform (101).

2. The waterproofing device for pipe sections in pipe jacking construction according to claim 1, characterized in that: The end face of the docking platform (101) is also provided with a first annular groove (103), and the end face of the top pipe (1) near the steel ring plate (102) is provided with a second annular groove (104). The first annular groove (103) and the second annular groove (104) are sealed by a second sealing ring (3).

3. The waterproofing device for pipe sections in pipe jacking construction according to claim 1, characterized in that: The retainer (2) includes a ring sleeve (201) and a support ring (202). The support ring (202) is sleeved on the docking platform (101). Multiple arc plates (6) are arranged circumferentially on the support ring (202). The outer side of the ring sleeve (201) and the inner side of the arc plate (6) are connected to form a slot (7).

4. The waterproofing device for pipe sections in pipe jacking construction according to claim 3, characterized in that: The arc plate (6) includes a support part (601) and a deformation part (602). Multiple through holes (603) are provided through the deformation part (602), and a first sealing ring (4) is sleeved on the outside of the multiple arc plates (6).

5. The waterproofing device for pipe sections in pipe jacking construction according to claim 4, characterized in that: The two sides of the arc plate (6) are respectively provided with protrusions (604), and the two opposite protrusions (604) are connected to form an installation groove (606). The inner side of the first sealing ring (4) is attached to the installation groove (606).

6. The waterproofing device for pipe sections in pipe jacking construction according to claim 4, characterized in that: The two ends of the arc plate (6) are respectively provided with chamfers (605), and the chamfers (605) on two adjacent arc plates (6) are connected to form a clearance opening (8).

7. The waterproofing device for pipe sections in pipe jacking construction according to claim 3, characterized in that: A cone head (503) is provided on one side of the drive rod (5). The outer diameter of the large end of the cone head (503) is larger than the width of the slot (7). The cone head (503) abuts against the inner side of the arc plate (6).

8. The waterproofing device for pipe sections in pipe jacking construction according to claim 7, characterized in that: The inner side of the steel ring plate (102) is provided with multiple fixing holes (105), and the other side of the drive rod (5) is provided with a screw (501). The screw (501) is connected by a round rod (502) and a conical head (503). The screw (501) is located in the fixing hole (105).

9. The waterproofing device for pipe sections in pipe jacking construction according to claim 8, characterized in that: The outer diameter of the round rod (502) is greater than the outer diameter of the screw rod (501).

10. The waterproofing device for pipe sections in pipe jacking construction according to claim 6, characterized in that: The lower part of the chamfer (605) is provided with a sealing part (9), and two adjacent sealing parts (9) fit together.

Images