A rectangular pipe section suitable for curved positioning and freely adjustable wedge-shaped amount

Abstract

The utility model discloses a rectangular pipe joint suitable for curve fixed progress can freely adjust wedge shape quantity relates to rectangular pipe joint technical field, a rectangular pipe joint suitable for curve fixed progress can freely adjust wedge shape quantity includes rectangular top pipe, adjusting module and waterproof module, sixteen groups of pre -buried groove are evenly seted up in the four -corner of rectangular top pipe front end, sixteen groups pre -buried groove all are provided with pre -buried steel box, is provided with the communicating groove between pre -buried groove and pre -buried steel box, all be provided with adjusting module in pre -buried steel box, waterproof module sets up in adjusting module outside, and this scheme provides the solution has solved although the top pipe top -in can form the curve top -in in the sense of rectification, but this kind of cannot form the larger curve, too big easy to account pipe joint seam open problem.

Description

Technical Field

[0001] This utility model relates to the field of rectangular tube section technology, specifically a rectangular tube section suitable for curved fixed advance with freely adjustable wedge amount. Background Technology

[0002] With social development and technological advancements, our lives are gradually changing. Rectangular pipe jacking, with its high efficiency and mature construction technology, is increasingly used in underground pedestrian tunnels, subway tunnels, vehicular tunnels, and utility tunnels. However, its widespread use has also revealed some problems. Rectangular pipe jacking is only suitable for straight-line jacking and cannot achieve curved jacking. As the technology matures, continuous innovation and improvement are needed based on existing techniques. In areas with limited site conditions, real-time rectangular pipe jacking construction requires real-time curved jacking. Due to the large cross-section of the rectangular pipe, curved jacking can cause the pipe joints to open, leading to uneven stress at the joints and potential damage. To address this issue, a rectangular pipe section with an adjustable wedge shape suitable for curved jacking has been developed.

[0003] A rectangular pipe jacking device and its jacking construction method are disclosed, as per announcement number CN116857431A. The device includes a guide rail base for supporting and transporting pipe segments, and a hoisting assembly for lifting the pipe segments. The jacking assembly is installed at the tail end of the guide rail base. The hoisting assembly includes a U-shaped hoisting frame, and the U-shaped hoisting frame is equipped with locking connectors for fixing the pipe segments. The guide rail base also has a hoisting adjustment mechanism; the jacking assembly has adjusting components. This invention achieves passive, sequential positioning and adjustment of the hoisted pipe segments, as well as unlocking and jacking the hoisted pipe segments, simplifying the operation steps, facilitating operation, and significantly improving construction efficiency.

[0004] During the use of the above-mentioned device, although the pipe jacking can form a curved jacking in a meaningful sense through correction, this cannot form a large curve, and if it is too large, the joint of the pipe section will easily open. Therefore, we propose a rectangular pipe section that is suitable for curved fixed jacking and can freely adjust the wedge amount, so as to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a rectangular pipe section with freely adjustable wedge size suitable for curved jacking, in order to solve the problem mentioned in the background art that although existing pipe jacking can form a meaningful curved jacking through correction, this cannot form a large curve, and if it is too large, the pipe section joint will open.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rectangular pipe section suitable for curved fixed-advance with freely adjustable wedge amount, comprising a rectangular jacking pipe, an adjustment module, and a waterproof module. Sixteen sets of pre-embedded grooves are evenly opened around the front end of the rectangular jacking pipe. Each of the sixteen sets of pre-embedded grooves is provided with a pre-embedded steel box. A connecting groove is provided between the pre-embedded grooves and the pre-embedded steel boxes. An adjustment module is provided inside each pre-embedded steel box. The waterproof module is located outside the adjustment module.

[0007] Preferably, each of the pre-embedded trenches has an oil pipe pre-reserved on its inner side, and each pipe extends through and to the outside of the rectangular top pipe.

[0008] Preferably, the adjustment module includes a miniature jack, an oil interface module, a wooden pad, high-modulus polyurethane sealant, and an elastic sealing gasket. The miniature jack is housed in a pre-embedded steel box and is assembled and connected to the pre-embedded steel box. A wooden pad is provided at the output end of the miniature jack, and an elastic sealing gasket is embedded in the wooden pad. High-modulus polyurethane sealant is provided on the outside of the wooden pad and is bonded to the wooden pad. A liquid inlet is provided at the bottom end of the miniature jack, and an oil interface module is provided at the liquid inlet. The oil interface module is assembled and connected to the liquid inlet, and the other side of the oil interface module is connected to the liquid inlet pipe flange.

[0009] Preferably, a buffer pad is provided between the miniature jack and the pre-embedded steel box.

[0010] Preferably, the waterproof module includes an active waterproof module and a passive waterproof module.

[0011] Preferably, the active waterproofing module includes a grouting module, which includes a grouting nozzle, a grouting pipe, a control valve, and a sealing structure. The control valve is connected in series with the grouting pipe, which is located at the rear end of the pre-embedded trench. The other end of the grouting pipe is equipped with a grouting nozzle, and the other end of the grouting nozzle is provided with a sealing structure.

[0012] Preferably, the passive waterproofing module includes low-modulus polyurethane sealant, wedge-shaped rubber waterstop rings, and water-swellable rubber waterstop strips. The water-swellable rubber waterstop strips and low-modulus polyurethane sealant are disposed at the joint of the rectangular jacking pipe. The water-swellable rubber waterstop strips are attached to the inner side of the socket of the rectangular jacking pipe. The low-modulus polyurethane sealant fills the gap between the rectangular jacking pipe and the pre-embedded steel box. The wedge-shaped rubber waterstop rings are disposed at the rear end of the low-modulus polyurethane sealant. Multiple sets of wedge-shaped rubber waterstop rings are disposed and stacked at the joint with the rectangular jacking pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model can adapt to the curve jacking requirements of different curvatures by controlling the extension and retraction of the micro jacks at different positions. Furthermore, by setting the micro jacks around the front end of the rectangular jacking pipe and evenly opening sixteen sets of pre-embedded grooves, there is no need to replace the pipe section mold, which is highly adaptable. This allows for the adjustment of the wedge amount, thus solving the problem that although the jacking pipe can form a curve jacking in a meaningful sense through correction, this cannot form a large curve, and if it is too large, the pipe section joint will easily open.

[0014] (2) By setting a waterproof module at the front end of the rectangular jacking pipe, the active waterproof module and the passive waterproof module cooperate with each other. In terms of passive waterproofing, water-swellable rubber waterstop strips are attached to the joints of the rectangular jacking pipe, low-modulus polyurethane sealant is filled, and multiple sets of wedge-shaped rubber waterstop rings are stacked to form multiple sealing defenses. In terms of active waterproofing, waterproof grout is injected into the joint gap through the grouting nozzle. After the waterproof grout solidifies, the pipe section is fixed, thereby reducing the risk of leakage and solving the problem of poor waterproofing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is an internal sectional view of the present invention; Figure 4 This is a diagram of the rectangular jacking pipe curved jacking method of this utility model; In the diagram: 1. Rectangular jacking pipe; 2. Adjustment module; 3. Embedded trench; 4. Oil pipeline; 5. Embedded steel box; 6. Miniature jack; 7. Oil interface module; 8. Wooden pad; 9. Grouting module; 91. Grouting nozzle; 92. Grouting pipe; 93. Control valve; 94. Sealing structure; 10. Passive waterproofing module; 101. Low modulus polyurethane sealant; 102. Wedge-shaped rubber waterstop ring; 103. Water-swellable rubber waterstop strip; 11. Elastic sealing gasket; 12. High modulus polyurethane sealant. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figure 1-4This utility model provides an embodiment of a rectangular pipe section suitable for curved jacking with freely adjustable wedge shape, comprising a rectangular jacking pipe 1, an adjustment module 2, and a waterproof module. Sixteen sets of pre-embedded grooves 3 are evenly distributed around the front end of the rectangular jacking pipe 1. Each of the sixteen sets of pre-embedded grooves 3 contains a pre-embedded steel box 5. A connecting groove is provided between the pre-embedded grooves 3 and the pre-embedded steel boxes 5. An adjustment module 2 is installed inside each pre-embedded steel box 5. The waterproof module is located outside the adjustment module 2. By controlling the extension and retraction of micro jacks 6 at different positions, it can adapt to the jacking requirements of curves with different curvatures. Furthermore, by placing the micro jacks 6 around the front end of the rectangular jacking pipe 1 in sixteen sets of pre-embedded grooves 3, there is no need to change the pipe section mold, resulting in strong adaptability and achieving wedge shape adjustment. The adjustment of the quantity solves the problem that although pipe jacking can form a meaningful curved jacking through correction, it cannot form a large curve, and too large a curve can easily lead to the pipe joint opening. By setting a waterproof module at the front end of the rectangular pipe jacking 1, and through the cooperation between the active waterproof module and the passive waterproof module 10, the passive waterproofing is achieved by attaching water-swellable rubber waterstop strips 103 to the joint of the rectangular pipe jacking 1, filling with low-modulus polyurethane sealant 101, and stacking multiple sets of wedge-shaped rubber waterstop rings 102 to form multiple sealing defenses. For active waterproofing, waterproof grout is injected into the joint gap through the grouting nozzle 91. After the waterproof grout solidifies, the pipe section is fixed, thereby reducing the risk of leakage and solving the problem of poor waterproofing effect.

[0018] Please see Figure 4 Oil pipes 4 are reserved on the inner side of the pre-embedded trench 3, and they all penetrate and extend to the outside of the rectangular top pipe 1.

[0019] Please see Figure 3 The adjustment module 2 includes a miniature jack 6, an oil interface module 7, a wooden pad 8, high-modulus polyurethane sealant 12, and an elastic sealing gasket 11. The miniature jack 6 is installed inside and connected to the pre-embedded steel box 5. The output end of the miniature jack 6 is provided with a wooden pad 8, and the elastic sealing gasket 11 is embedded in the wooden pad 8. The outer side of the wooden pad 8 is provided with high-modulus polyurethane sealant 12, which is bonded to the wooden pad 8. The bottom end of the miniature jack 6 has an inlet, and the oil interface module 7 is provided at the inlet. The oil interface module 7 is assembled and connected to the inlet. The other side of the oil interface module 7 is connected to the inlet pipe flange. By controlling the extension and retraction of the miniature jacks 6 at different positions, it can adapt to the curve jacking requirements of different curvatures. Moreover, by setting the miniature jacks 6 around the front end of the rectangular jacking pipe 1 with sixteen sets of pre-embedded grooves 3 evenly opened, there is no need to replace the pipe section mold, which is highly adaptable. This allows for the adjustment of the wedge amount, thus solving the problem that although pipe jacking can form a meaningful curve jacking through correction, this cannot form a large curve, and if it is too large, the pipe section joint will open.

[0020] Please see Figure 3 A buffer pad is provided between the miniature jack 6 and the pre-embedded steel box 5 to protect the miniature jack 6.

[0021] Please see Figure 3 The waterproofing module includes an active waterproofing module and a passive waterproofing module 10. The active waterproofing module includes a grouting module 9, which includes a grouting nozzle 91, a grouting pipe 92, a control valve 93, and a sealing structure 94. The control valve 93 is connected in series to the grouting pipe 92, which is located at the rear end of the pre-embedded groove 3. The other end of the grouting pipe 92 is fitted with a grouting nozzle 91, and the other end of the grouting nozzle 91 is equipped with a sealing structure 94. The passive waterproofing module 10 includes a low-modulus polyurethane sealant 101, a wedge-shaped rubber waterstop ring 102, and a water-swellable rubber waterstop strip 103. The water-swellable rubber waterstop strip 103 and the low-modulus polyurethane sealant 101 are installed at the joint of the rectangular jacking pipe 1. The water-swellable rubber waterstop strip 103 is attached to the inside of the socket of the rectangular jacking pipe 1. The low-modulus polyurethane sealant 101... 01 is filled in the gap between the rectangular jacking pipe 1 and the pre-embedded steel box 5. The wedge-shaped rubber waterstop ring 102 is set at the rear end of the low modulus polyurethane sealant 101. Multiple sets of wedge-shaped rubber waterstop rings 102 are set and stacked at the joint with the rectangular jacking pipe 1. By setting a waterproof module at the front end of the rectangular jacking pipe 1, the active waterproof module and the passive waterproof module 10 cooperate with each other. In terms of passive waterproofing, water-swellable rubber waterstop strips 103 are attached to the joint of the rectangular jacking pipe 1, low modulus polyurethane sealant 101 is filled, and multiple sets of wedge-shaped rubber waterstop rings 102 are stacked to form multiple sealing defenses. In terms of active waterproofing, waterproof grout is injected into the joint gap through the grouting nozzle 91. After the waterproof grout solidifies, the pipe section is fixed, thereby reducing the risk of leakage and solving the problem of poor waterproofing effect.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rectangular pipe section suitable for curved fixed-advance with freely adjustable wedge amount, comprising a rectangular jacking pipe (1), an adjustment module (2), and a waterproof module, characterized in that: The rectangular top pipe (1) has sixteen sets of pre-embedded grooves (3) evenly opened around the front end. Each of the sixteen sets of pre-embedded grooves (3) is equipped with a pre-embedded steel box (5). A connecting groove is provided between the pre-embedded groove (3) and the pre-embedded steel box (5). Each pre-embedded steel box (5) is equipped with an adjustment module (2). The waterproof module is located outside the adjustment module (2).

2. A rectangular tube section with freely adjustable wedge shape for curved fixed-advance travel according to claim 1, characterized in that: Oil pipes (4) are reserved on the inner side of the pre-embedded groove (3), and they all penetrate and extend to the outside of the rectangular top pipe (1).

3. A rectangular tube section with freely adjustable wedge size suitable for curved precession, as described in claim 2, characterized in that: The adjustment module (2) includes a miniature jack (6), an oil interface module (7), a wooden pad (8), a high-modulus polyurethane sealant (12), and an elastic sealing gasket (11). The miniature jack (6) is installed in a pre-embedded steel box (5) and is assembled and connected to the pre-embedded steel box (5). The output end of the miniature jack (6) is provided with a wooden pad (8). An elastic sealing gasket (11) is embedded in the wooden pad (8). A high-modulus polyurethane sealant (12) is provided on the outside of the wooden pad (8). The high-modulus polyurethane sealant (12) is bonded and connected to the wooden pad (8). The bottom end of the miniature jack (6) is provided with a liquid inlet. An oil interface module (7) is provided at the liquid inlet. The oil interface module (7) is assembled and connected to the liquid inlet. The other side of the oil interface module (7) is connected to the liquid inlet pipe flange.

4. A rectangular tube section with freely adjustable wedge size suitable for curved precession as described in claim 3, characterized in that: A buffer pad is provided between the miniature jack (6) and the pre-embedded steel box (5).

5. A rectangular tube section with freely adjustable wedge size suitable for curved fixed-advance travel, as described in claim 4, characterized in that: The waterproofing module includes an active waterproofing module and a passive waterproofing module (10).

6. A rectangular tube section with freely adjustable wedge amount suitable for curved fixed-advance travel, as described in claim 5, characterized in that: The active waterproofing module includes a grouting module (9), which includes a grouting nozzle (91), a grouting pipe (92), a control valve (93), and a sealing structure (94). The control valve (93) is connected in series on the grouting pipe (92). The grouting pipe (92) is located at the rear end of the pre-embedded groove (3). The other end of the grouting pipe (92) is equipped with a grouting nozzle (91), and the other end of the grouting nozzle (91) is provided with a sealing structure (94).

7. A rectangular tube section with freely adjustable wedge amount suitable for curved fixed-advance travel, as described in claim 6, characterized in that: The passive waterproof module (10) includes a low-modulus polyurethane sealant (101), a wedge-shaped rubber waterstop ring (102), and a water-swellable rubber waterstop strip (103). The water-swellable rubber waterstop strip (103) and the low-modulus polyurethane sealant (101) are installed at the joint of the rectangular top pipe (1). The water-swellable rubber waterstop strip (103) is attached to the inside of the socket of the rectangular top pipe (1). The low-modulus polyurethane sealant (101) fills the gap between the rectangular top pipe (1) and the pre-embedded steel box (5). The wedge-shaped rubber waterstop ring (102) is installed at the rear end of the low-modulus polyurethane sealant (101). Multiple sets of the wedge-shaped rubber waterstop ring (102) are arranged in a stacked manner at the joint with the rectangular top pipe (1).

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