Prefabricated comprehensive pipe gallery
The ball-joint connection structure, composed of flexible corrugated pipes and ball-head limiting rings, solves the problems of structural cracking and misalignment in prefabricated integrated utility tunnels under foundation settlement and construction errors, realizing modular and convenient installation and flexible connection, and improving operational safety and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA 19TH METALLURGICAL CORP
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional prefabricated integrated utility tunnels are prone to cracking and misalignment when faced with factors such as uneven foundation settlement, thermal expansion and contraction, and vehicle loads. Furthermore, the existing connection structure lacks sufficient flexibility and adaptability, making it difficult to effectively buffer relative displacement in multiple directions, which affects operational safety and service life.
The ball joint connection structure consists of a flexible corrugated pipe and a ball head limiting ring. The corrugated pipe has good axial expansion and contraction performance and radial bending performance. The ball head rotates within the limiting ring to absorb the angular deviation caused by foundation settlement or construction errors. Combined with the protection of the protective sleeve, it realizes modular and convenient installation and flexible connection.
It effectively avoids cracking and misalignment at pipe connection points, improves the operational safety and service life of prefabricated integrated pipe corridors, enhances adaptability to complex settlement environments, and has good construction adaptability and durability.
Smart Images
Figure CN224495205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal infrastructure technology, and in particular to a prefabricated integrated utility tunnel. Background Technology
[0002] With the acceleration of urbanization, in order to improve the utilization rate of underground space and achieve unified planning and management of various municipal pipelines in cities, integrated utility tunnels, as underground tunnel structures for laying multiple pipelines such as electricity, telecommunications, water supply and drainage, and gas, are widely used in new urban areas and old city renovation projects. Traditional integrated utility tunnels mostly adopt rigid connection structures of integral casting or prefabrication splicing. Although they have certain advantages in terms of structural stability, sealing performance and installation convenience, under the combined action of various external factors such as uneven foundation settlement, thermal expansion and contraction, and vehicle loads, the rigid connection parts of the structure often experience problems such as cracking and misalignment, which seriously affect the operational safety and service life of the utility tunnel.
[0003] Especially in the practical application of prefabricated integrated utility tunnels, the various module segments need to be sealed together through connecting structures. However, the flexibility of some current connecting structures is poor, making it difficult to effectively buffer multi-directional relative displacement caused by foundation settlement or construction errors. On the other hand, while existing flexible connection solutions meet displacement absorption requirements, they often lack sufficient shear strength and sealing reliability, leading to problems such as deformation, leakage, and even disassembly during long-term use. In addition, the assembly process of some connecting structures on the construction site is complex, requiring high alignment accuracy between components and exhibiting poor on-site adaptability, which increases construction costs and maintenance difficulty. Utility Model Content
[0004] This utility model provides a prefabricated integrated utility tunnel, in which the ball head rotates within the limiting ring, and in conjunction with the flexible corrugated pipe, it avoids cracking and misalignment at the pipe connection points, ensuring the safe operation of the integrated utility tunnel and increasing its service life.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] This utility model discloses a prefabricated integrated utility tunnel, including a corrugated pipe and a pipe body. Both ends of the corrugated pipe are provided with a directional adjustment mechanism. The directional adjustment mechanism includes a limiting ring and a connecting pipe. One end of the connecting pipe is provided with a ball head. The outer diameter of the ball head is larger than the inner diameter of the limiting ring. The other end of the connecting pipe, relative to the ball head, passes through the limiting ring and is connected to the corrugated pipe. The ball head is rotatably fitted inside the limiting ring. The limiting ring is connected to the pipe body.
[0007] Furthermore, a protective sleeve is fitted onto the steering mechanism, and both the ball head and the limiting ring are located inside the protective sleeve.
[0008] Furthermore, both ends of the bellows are fixedly connected to a first flange ring, and the other end of the connecting pipe relative to one end of the ball head is fixedly connected to a second flange ring. The second flange ring and the first flange ring are fixedly connected by a first bolt passing through the flange bolt holes corresponding to the first flange ring and the second flange ring.
[0009] Furthermore, a sealing plate is provided at one end of the limiting ring that is connected to the tube body, and a through hole is provided at the center of the sealing plate, and the sealing plate is connected to the tube body.
[0010] Furthermore, a third flange ring is provided at the end of the limiting ring connected to the pipe body. The sealing plate has first connecting holes that correspond one-to-one with the bolt holes of the third flange ring. The first connecting holes are evenly distributed around the circumference of the through hole. The third flange ring and the sealing plate are fixedly connected by second bolts passing through the corresponding first connecting holes and flange bolt holes of the third flange ring. The sealing plate has second connecting holes that are evenly distributed around the outer circumference of the sealing plate. A retaining ring is provided inside the end of the pipe body connected to the sealing plate. The retaining ring has third connecting holes that correspond one-to-one with the second connecting holes. The sealing plate and the pipe body are fixedly connected by third bolts passing through the corresponding second connecting holes and third connecting holes.
[0011] The beneficial effects of this utility model are:
[0012] This application discloses a prefabricated integrated utility tunnel for the centralized laying of various pipelines underground in urban areas. A flexible corrugated pipe serves as the intermediate connecting section of the directional adjustment mechanism, possessing excellent axial expansion, radial bending, and seismic buffering performance to accommodate axial tensile and compressive displacements and radial displacements caused by uneven foundation settlement. The directional adjustment mechanism employs a ball joint connection structure formed by a ball head and a limiting ring. The ball head rotates within the limiting ring, allowing it to rotate at a certain angle within the ring. This absorbs angular deviations caused by uneven foundation settlement or construction errors, preventing structural cracking due to rigid connections. In summary, the prefabricated integrated utility tunnel of this application, through the combination of flexible corrugated pipes and a ball-joint connection structure, achieves modular and convenient installation and flexible connection of the prefabricated integrated utility tunnel. When the foundation settles or displaces in multiple directions, the ball head rotates within the limiting ring. In conjunction with the flexible corrugated pipe, the pipe connection parts offset towards the direction of foundation settlement or displacement under the action of foundation settlement or displacement, thereby avoiding cracking and misalignment of the pipe connection parts, ensuring the operational safety of the integrated utility tunnel, increasing its service life, and improving its adaptability to complex settlement environments. It has good construction adaptability, safety, and durability. Attached Figure Description
[0013] 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.
[0014] Figure 1 This is a schematic diagram of the structure of a prefabricated integrated utility tunnel provided in this embodiment of the utility model. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the structure of a prefabricated integrated utility tunnel provided in this embodiment of the utility model. Figure 2 ;
[0016] Figure 3 This is a schematic diagram of the structure of the bellows provided in this embodiment of the utility model;
[0017] Figure 4 This is a schematic diagram of the orientation mechanism provided in this embodiment of the utility model;
[0018] Figure 5 This is a schematic diagram of the structure of the sealing plate and the tube provided in this embodiment of the utility model.
[0019] Figure label:
[0020] 1. Corrugated pipe, 11. First flange ring, 2. Adjustment mechanism, 21. Ball head, 211. Connecting pipe, 212. Second flange ring, 22. Limiting ring, 221. Third flange ring, 3. Protective sleeve, 4. Sealing plate, 41. Through hole, 42. First connecting hole, 43. Second connecting hole, 5. Pipe body, 51. Retaining ring, 51. Third connecting hole, 511. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, this utility model discloses a prefabricated integrated utility tunnel, comprising a corrugated pipe 1 and a pipe body 5. Both ends of the corrugated pipe 1 are equipped with a directional adjustment mechanism 2. The directional adjustment mechanism 2 includes a limiting ring 22 and a connecting pipe 211. One end of the connecting pipe 211 is provided with a ball head 21, the outer diameter of which is larger than the inner diameter of the limiting ring 22. The other end of the connecting pipe 211, relative to the ball head 21, passes through the limiting ring 22 and connects to the corrugated pipe 1. The ball head 21 is rotatably fitted within the limiting ring 22, and the limiting ring 22 is connected to the pipe body 5. The connecting pipe 211 is a straight cylindrical metal component, and the ball head 21 is a hemispherical hollow structural component, integrally formed with the ball head 21 or welded to its outer end.
[0024] A prefabricated integrated utility tunnel based on the above structure is used for the centralized laying of various pipelines underground in urban areas. The flexible corrugated pipe 1 serves as the intermediate connecting section of the directional adjustment mechanism 2, possessing excellent axial expansion and contraction, radial bending, and seismic buffering performance to adapt to the axial tensile and compressive displacements and radial displacements caused by uneven foundation settlement. The directional adjustment mechanism 2 adopts a ball joint connection structure consisting of a ball head 21 and a limiting ring 22. The ball head 21 is rotatably fitted within the limiting ring 22, allowing the ball head 21 to rotate at a certain angle within the limiting ring 22. This absorbs angular deviations caused by uneven foundation settlement or construction errors, preventing structural cracking due to rigid connections. In summary, the prefabricated integrated utility tunnel of this application, through the combination of flexible corrugated pipe 1 and ball-joint type directional structure 2, achieves modular and convenient installation and flexible connection of the prefabricated integrated utility tunnel. When the foundation settles or displaces in multiple directions, the ball head 21 rotates within the limiting ring 22. With the help of the flexible corrugated pipe 1, the pipe connection part offsets towards the direction of foundation settlement or displacement under the action of foundation settlement or displacement, thereby avoiding cracking and misalignment of the pipe connection part, ensuring the operational safety of the integrated utility tunnel, increasing the service life of the integrated utility tunnel, and improving the adaptability of the integrated utility tunnel to complex settlement environments. It has good construction adaptability, safety and durability.
[0025] As one implementation method, such as Figure 1 , Figure 2 As shown, the steering mechanism 2 is fitted with a protective sleeve 3, and the ball head 21 and the limiting ring 22 are both located inside the protective sleeve 3.
[0026] The protective sleeve 3 is a cylindrical metal or high-strength engineering plastic structure that covers the outside of the ball head 21 and the limiting ring 22, and is used to protect the ball joint structure composed of the ball head 21 and the limiting ring 22. One end of the protective sleeve 3 is sleeved on the end of the bellows 1, and the other end of the protective sleeve 3 is fastened to the sealing plate 4 through an elastic sealing ring to prevent rainwater, mud, dust or corrosive liquids from entering the rotating part of the ball joint, and to avoid movement obstruction or fatigue damage; the protective sleeve 3 also has a certain impact resistance to prevent the ball joint structure from failing due to external impact during transportation, construction or operation, and effectively extend the service life of the steering mechanism 2.
[0027] As one implementation method, such as Figure 1 , Figure 2 , Figure 4 As shown, both ends of the bellows 1 are fixedly connected to a first flange ring 11, and the other end of the connecting pipe 211 relative to one end of the ball head 21 is fixedly connected to a second flange ring 212. The second flange ring 212 and the first flange ring 11 are fixedly connected by a first bolt passing through the flange bolt holes corresponding to the first flange ring 11 and the second flange ring 212.
[0028] The bellows 1 and the connecting pipe 211 are securely connected by a first bolt passing through the flange bolt holes of the first flange ring 11 and the second flange ring 212, achieving a sealed connection between the bellows 1 and the adjusting mechanism 2. The bolted connection enhances the stability of the connection and facilitates installation and disassembly, enabling on-site assembly and subsequent maintenance. Furthermore, the second flange ring 212 and the first flange ring 11 are connected by high-strength bolts, which are evenly distributed. A sealing gasket is provided at the connection point to enhance sealing performance and prevent rainwater, groundwater, or impurities from entering the internal channels.
[0029] As one implementation method, such as Figure 1 , Figure 4 , Figure 5 As shown, a sealing plate 4 is provided at one end of the limiting ring 22 that is connected to the tube body 5. A through hole 41 is provided at the center of the sealing plate 4, and the sealing plate 4 is connected to the tube body 5.
[0030] The sealing plate 4 is a planar structural plate that serves as a transitional connector between the limiting ring 22 and the pipe body 5, facilitating the fixed connection of the adjusting mechanism 2 to the pipe body 5. The through hole 41 is a circular channel that keeps the internal pipes or lines connected during the connection process, ensuring the continuity of the integrated utility tunnel's functions.
[0031] As one implementation method, such as Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, a third flange ring 221 is provided at one end of the limiting ring 22 connected to the pipe body 5. The sealing plate 4 has a first connecting hole 42 that corresponds one-to-one with the bolt holes of the third flange ring 221. The first connecting holes 42 are evenly distributed around the circumference of the through hole 41. The third flange ring 221 and the sealing plate 4 are fixedly connected by a second bolt passing through the corresponding first connecting hole 42 and the flange bolt hole of the third flange ring 221. The sealing plate 4 has a second connecting hole 43 that is evenly distributed around the outer edge of the sealing plate 4. A retaining ring 51 is provided inside the end of the pipe body 5 connected to the sealing plate 4. The retaining ring 51 has a third connecting hole 511 that corresponds one-to-one with the second connecting hole 43. The sealing plate 4 and the pipe body 5 are fixedly connected by a third bolt passing through the corresponding second connecting hole 43 and the third connecting hole 511.
[0032] The limiting ring 22 and the sealing plate 4 are fixedly and stably connected by the second bolt passing through the first connecting hole 42 corresponding to the sealing plate 4 and the flange bolt hole corresponding to the third flange ring 221, ensuring a stable connection and uniform force distribution between the adjusting mechanism 2 and the sealing plate 4. The sealing plate 4 and the pipe body 5 are fixedly and stably connected by the third bolt passing through the second connecting hole 43 corresponding to the sealing plate 4 and the three connecting holes 511 of the retaining ring 51 of the pipe body 5. The bolted connection enhances the stability of the connection, improves the overall tensile strength, and facilitates installation and disassembly. Flat washers and spring washers are provided in the bolted connection structure to buffer the bolt force and prevent loosening, thereby enhancing the connection stability. Among them, the first connecting hole 42, the second connecting hole 43, and the third connecting hole 511 are bolt holes. The retaining ring 51 is a ring-shaped reinforcing structure, which is set on the inner side of the end of the pipe body 5 and is fixed by welding or slot installation. The retaining ring 51 is set at the key stress position of the pipe body 5 to form a complete rigid protective structure, which limits and guides the internal force transmission, helps to distribute the force evenly on the inner diameter of the pipe, enhances the tensile and torsional strength of the overall structure at the connection end of the sealing plate 4 and the pipe body 5, maintains connection stability during structural settlement, thermal expansion and contraction or seismic action, and ensures the stability of the structure under deformation.
[0033] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A prefabricated integrated utility tunnel, characterized in that, The device includes a corrugated pipe (1) and a pipe body (5). Both ends of the corrugated pipe (1) are provided with a directional adjustment mechanism (2). The directional adjustment mechanism (2) includes a limiting ring (22) and a connecting pipe (211). One end of the connecting pipe (211) is provided with a ball head (21). The outer diameter of the ball head (21) is larger than the inner diameter of the limiting ring (22). The other end of the connecting pipe (211) relative to the ball head (21) passes through the limiting ring (22) and is connected to the corrugated pipe (1). The ball head (21) is rotatably fitted inside the limiting ring (22). The limiting ring (22) is connected to the pipe body (5).
2. The prefabricated integrated utility tunnel according to claim 1, characterized in that, The steering mechanism (2) is fitted with a protective sleeve (3), and the ball head (21) and the limiting ring (22) are both located inside the protective sleeve (3).
3. The prefabricated integrated utility tunnel according to claim 1, characterized in that, Both ends of the corrugated pipe (1) are fixedly connected to a first flange ring (11), and the other end of the connecting pipe (211) relative to one end of the ball head (21) is fixedly connected to a second flange ring (212). The second flange ring (212) and the first flange ring (11) are fixedly connected by a first bolt passing through the flange bolt holes corresponding to the first flange ring (11) and the second flange ring (212).
4. A prefabricated integrated utility tunnel according to claim 1, characterized in that, The limiting ring (22) is connected to the tube body (5) with a sealing plate (4) at one end. A through hole (41) is provided at the center of the sealing plate (4). The sealing plate (4) is connected to the tube body (5).
5. A prefabricated integrated utility tunnel according to claim 4, characterized in that, The limiting ring (22) is provided with a third flange ring (221) at one end connected to the pipe body (5). The sealing plate (4) has first connecting holes (42) that correspond one-to-one with the bolt holes of the third flange ring (221). The first connecting holes (42) are evenly distributed around the circumference of the through hole (41). The third flange ring (221) and the sealing plate (4) are fixedly connected by second bolts passing through the corresponding first connecting holes (42) and flange bolt holes of the third flange ring (221). The plate (4) has a through hole (43) and the second connecting hole (43) is evenly distributed around the outer edge of the sealing plate (4). The tube body (5) is provided with a retaining ring (51) at the end connected to the sealing plate (4). The retaining ring (51) has a through hole (511) that corresponds to the second connecting hole (43). The sealing plate (4) and the tube body (5) are fixedly connected by a third bolt passing through the corresponding second connecting hole (43) and the third connecting hole (511).