Arc-shaped auxiliary running device for pipe jacking construction of large-section pipe-in-pipe structure

Abstract

The utility model relates to big section pipe in pipe structure technical field discloses arc auxiliary running device for big section pipe in pipe structure pipe jacking construction, including inner tube, the outside of inner tube is provided with a plurality, be used for improving the efficiency of engineering, the auxiliary concentric mechanism includes a plurality of fixed links, the adjacent side of a plurality of fixed links all slide connections in the outside of inner tube, the left and right sides of a plurality of fixed links all are fixedly connected with connecting rod, both ends of a plurality of fixed links all are fixedly connected with slider, the inside of a plurality of sliders all are rotatably connected with one -way guide pulley, the outside one end of a plurality of fixed links all are fixedly connected with support plate, the bottom of a plurality of support plates all are fixedly connected with pressure distribution plate, in the utility model, realized the rolling friction automatic correction inner tube deviation, need not manual calibration frequently, and a plurality of fixed links can work cooperatively, and the quick response inner tube deviation makes inner tube keep accurate concentric all the time, improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of large-section pipe-in-pipe structure technology, and in particular to an arc-shaped auxiliary traveling device for jacking construction of large-section pipe-in-pipe structures. Background Technology

[0002] Large-section pipe-in-pipe jacking is a trenchless underground pipeline laying technology. Using jacking equipment, the outer and inner pipes are sequentially or simultaneously advanced to the target location. The outer pipe acts as a load-bearing structure, resisting external soil pressure and groundwater erosion, providing a stable protective shell for the inner pipe. The inner pipe is responsible for transporting fluids, gases, or serving as a cable conduit. The arc-shaped structure of the device can fit snugly against the inner wall of the pipe, reducing friction during pipe advancement through rolling or sliding, thus reducing jacking resistance. Simultaneously, the arc-shaped auxiliary traveling device can maintain the coaxiality of the inner and outer pipes to a certain extent, avoiding construction errors caused by pipe deviation, ensuring the accuracy and quality of pipe jacking construction, improving construction efficiency, and reducing project costs.

[0003] A search revealed Chinese Patent Publication No. CN217075410U, which discloses a tube-in-tube structure comprising an outer tube body, an inner tube body, a first cover, and a second cover. The outer tube body includes a tube body and an outer tube opening, with the outer tube opening located at one end of the tube body and having a first discharge port and a second discharge port. The inner tube body is located within the outer tube body and has a first cavity and an inner tube opening. The first cavity is located on one side within the tube body, and the inner tube opening is connected to one end of the first cavity and embedded in the outer tube opening, with the inner tube opening communicating with the first discharge port. A second cavity is formed between the tube body and the first cavity, and the second cavity communicates with the second discharge port. The first cover is detachably used to close the first discharge port, and the second cover is detachably used to close the second discharge port. In use, opening the first cover while simultaneously closing the second cover allows the contents of the first cavity to be squeezed out; opening the second cover while simultaneously closing the first cover allows the contents of the second cavity to be squeezed out. The contents of different cavities can be used separately to meet the needs of quantitative use of different types of contents. The device is connected to one end of the first cavity through an inner tube and embedded in an outer tube, which can achieve a double-layer seal. However, there is a problem with the concentric adjustment of the tubes within the tube in this device. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an arc-shaped auxiliary traveling device for the construction of large-section pipe-in-pipe structures, aiming to improve the problem of difficult concentric adjustment of pipe-in-pipe structures in the existing technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure, comprising an inner pipe, with multiple auxiliary concentric mechanisms arranged on the outer side of the inner pipe to improve project efficiency. The auxiliary concentric mechanism includes multiple fixed rods, with adjacent sides of the multiple fixed rods slidably connected to the outer side of the inner pipe. Connecting rods are fixedly connected to the left and right sides of the multiple fixed rods. Sliders are fixedly connected to both ends of the multiple fixed rods. One-way guide wheels are rotatably connected to the inner sides of the multiple sliders. Support plates are fixedly connected to one outer end of the multiple fixed rods. Pressure plates are fixedly connected to the bottom of the multiple support plates. Rollers are fixedly connected to the inner sides of the multiple pressure plates. Rotating components are provided at adjacent ends of the multiple fixed rods.

[0006] Through the above technical solution: When the arc-shaped auxiliary traveling device is working, after the inner pipe is laid, multiple fixed rods are adjusted in position on the outside of the inner pipe through sliding connections, and the connecting rods ensure structural stability. The unidirectional guide wheel inside the slider allows the device to move only along the jacking direction, avoiding lateral deviation. The support plate and pressure plate on the outside of the fixed rods evenly distribute the pressure on the device, and the rollers on the inside of the pressure plate can reduce friction with the outer pipe or construction surface, facilitating the movement of the device. During the jacking process, if the inner and outer pipes are not concentric, the angle of the fixed rods can be finely adjusted by the rotating component to keep the inner pipe in the center position, achieving precise positioning. The unidirectional guide wheel ensures the direction of travel, the rollers reduce resistance, and the rotating component ensures concentricity. Thus, during the jacking construction of large-section pipe-in-pipe structures, the device efficiently and stably assists the movement of the inner pipe, improving project efficiency and construction quality.

[0007] As a further description of the above technical solution:

[0008] The rotating assembly includes multiple bearing plates, one side of each bearing plate is slidably connected to an adjacent side of multiple fixed rods, the inner side of each bearing plate is provided with a sliding groove, the adjacent side of each fixed rod is provided with a limiting groove, and the inner side of each limiting groove is rotatably connected with a ball bearing.

[0009] Through the above technical solution: when the inner tube moves during pipe jacking construction, one side of the bearing plate is slidably connected to the adjacent side of the fixed rod, providing a support surface for the inner tube. The sliding groove on the inner side of the bearing plate cooperates with the rolling balls in the limiting groove on the adjacent side of the fixed rod, allowing the bearing plate to rotate flexibly relative to the fixed rod. When the inner tube undergoes displacement or force changes, the bearing plate can adjust its angle and position in a timely manner along the sliding groove under the rolling action of the balls to adapt to the dynamic changes of the inner tube. This effectively reduces the frictional resistance between the inner tube and the fixed rod, reduces component wear, and ensures that the inner tube remains in a relatively stable concentric state during movement. This ensures the concentricity accuracy of the inner and outer tubes during pipe jacking construction of large-section pipe-in-pipe structures, providing a reliable guarantee for the smooth progress of construction.

[0010] As a further description of the above technical solution:

[0011] The adjacent sides of the plurality of bearing plates are slidably connected to the outside of the ball bearings, and the inner sides of the plurality of bearing plates are slidably connected to the outside of the inner tube.

[0012] Through the above technical solution: when the inner tube is pushed in, the inner side of the bearing plate directly slides in contact with the outer side of the inner tube, and the displacement of the inner tube is sensed in real time. The adjacent side of the bearing plate is slidably connected to the outer side of the ball bearing. With the help of the rolling of the ball bearing in the limiting groove, flexible rotation and fine-tuning of position are achieved to adapt to the directional changes during the movement of the inner tube and reduce frictional loss between the two.

[0013] As a further description of the above technical solution:

[0014] Both ends of the inner tube are fixedly connected to quick connectors, and the internal dimensions of the two quick connectors are larger than the outer wall of the inner tube.

[0015] The above technical solution involves the following steps: During construction, the inner tube is quickly spliced ​​together using quick-connect fittings at both ends to form a construction system. Multiple fixing rods are slidably adjusted along the outside of the inner tube, and the structure is fixed by connecting rods. When the inner tube and outer tube are not concentric, the angle of the fixing rods is finely adjusted by rotating components to keep the inner tube in the center position. The quick-connect fittings enable rapid connection of the inner tube.

[0016] As a further description of the above technical solution:

[0017] The multiple unidirectional guide wheels are all designed with equal spacing, the multiple sliders are designed with symmetry, and the multiple balls are arranged with equal spacing.

[0018] The above technical solution involves: equidistantly distributed unidirectional guide wheels that limit movement along the jacking pipe direction to prevent deviation; the outer support plate of the fixed rod and the pressure plate disperse pressure; the inner roller of the pressure plate reduces friction; equidistantly distributed unidirectional guide wheels ensure the direction of travel; the rollers reduce resistance; the rotating components ensure concentricity; and the sliders all adopt a symmetrical design, which enables the outer layer gap of the inner pipe to remain concentric when filling materials.

[0019] As a further description of the above technical solution:

[0020] The horizontal height of the multiple balls is set in an arc shape, and the multiple balls are arranged at equal intervals.

[0021] The above technical solution allows for fast and smooth sliding by equidistant arrangement of multiple balls.

[0022] As a further description of the above technical solution:

[0023] The adjacent sides of the plurality of fixed rods are slidably connected to the outside of the inner tube.

[0024] The above technical solution involves the fixing rods being evenly distributed along the circumference of the inner tube, maintaining a certain distance between them. This ensures the stability of the structure and provides sufficient support and protection for the inner tube.

[0025] As a further description of the above technical solution:

[0026] One side of each of the multiple bearing plates is slidably connected to the adjacent side of a multiple fixed rod.

[0027] With the above technical solution, one side of each of the multiple bearing plates is slidably connected to the adjacent side of the multiple fixed rods along the length direction of the fixed rods. These bearing plates can move smoothly along the fixed rods in the axial direction while maintaining a stable connection with the fixed rods.

[0028] This utility model has the following beneficial effects:

[0029] This invention achieves automatic correction of inner tube misalignment through rolling friction, eliminating the need for frequent manual calibration. Multiple sets of fixing rods work together to quickly respond to inner tube misalignment, ensuring the inner tube remains precisely concentric. This reduces rework rates, improves construction efficiency, facilitates pipe-in-pipe concentricity adjustment, and effectively guarantees the safety of the working environment. Attached Figure Description

[0030] Figure 1 This is a perspective view of the arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure proposed in this utility model.

[0031] Figure 2 This is a front view of the arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure proposed in this utility model.

[0032] Figure 3 This is a schematic diagram of the auxiliary concentric mechanism of the arc-shaped auxiliary traveling device for the jacking construction of a large-section pipe-in-pipe structure proposed in this utility model.

[0033] Figure 4 This is a cross-sectional view of the auxiliary concentric mechanism of the arc-shaped auxiliary traveling device for the jacking construction of a large-section pipe-in-pipe structure proposed in this utility model.

[0034] Legend:

[0035] 1. Inner tube; 2. Auxiliary concentric mechanism; 201. Fixed rod; 202. Connecting rod; 203. Slider; 204. One-way guide wheel; 205. Support plate; 206. Pressure plate; 207. Roller; 208. Rotating assembly; 2081. Bearing plate; 2082. Slide groove; 2083. Limiting groove; 2084. Ball bearing; 3. Quick coupling. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 protection scope of the present utility model.

[0037] Reference Figure 1 This utility model provides an embodiment of an arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure. The device includes an inner pipe 1, which serves as the basic component, providing internal space for installation support and pipeline transportation. Multiple auxiliary concentric mechanisms 2 are arranged on the outer side of the inner pipe 1. These mechanisms maintain the concentricity of the inner and outer pipes during construction, effectively improving construction accuracy and efficiency. Each auxiliary concentric mechanism 2 includes multiple fixed rods 201, which connect and support the pipes, ensuring overall structural stability. Adjacent sides of the fixed rods 201 are slidably connected to the outer side of the inner pipe 1, allowing the auxiliary concentric mechanism 2 to slide flexibly along the inner pipe 1 and adapt to positional adjustments in different construction scenarios. Connecting rods 202 are fixedly connected to the left and right sides of each fixed rod 201, enhancing the connection strength between the fixed rods 201 and improving the overall rigidity of the auxiliary concentric mechanism 2. Both ends of each fixed rod 201 are fixedly connected to... The slider 203 reduces frictional resistance during operation, making the device move more smoothly. One-way guide wheels 204 are rotatably connected to the inner sides of multiple sliders 203, providing guidance and assisting sliding to ensure stable movement of the device in a predetermined direction. Support plates 205 are fixedly connected to the outer ends of multiple fixed rods 201, bearing and distributing pressure to ensure stability during construction. Pressure-distributing plates 206 are fixedly connected to the bottom of multiple support plates 205, further distributing pressure evenly to prevent excessive local pressure from affecting construction. Rollers 207 are fixedly connected to the inner sides of multiple pressure-distributing plates 206, facilitating flexible rolling of the device on the construction surface and improving its mobility. Rotating components 208 are provided at adjacent ends of multiple fixed rods 201, allowing for angle adjustment between the fixed rods 201 and enhancing the device's adaptability in complex construction environments.

[0038] Specifically, during construction, the inner pipe 1 serves as the foundation, providing installation support and pipeline transportation space for the entire device. The auxiliary concentric mechanism 2 plays a crucial role. Multiple fixed rods 201 are slidably connected to the outside of the inner pipe 1, allowing for flexible sliding along the inner pipe 1 to adapt to positional adjustments required in different construction scenarios. Connecting rods 202 on the left and right sides of the fixed rods 201 enhance the connection strength, ensuring the overall rigidity of the auxiliary concentric mechanism 2. Slider 203 at both ends, in conjunction with the unidirectional guide wheel 204 rotatably connected on the inner side, reduce running friction resistance, ensuring smooth movement of the device in the predetermined direction. Simultaneously, a support at one end of the outer side of the fixed rod 201... The support plate 205 bears and disperses pressure, while the pressure-distributing plate 206 at the bottom further evenly distributes the pressure, preventing excessive local pressure from affecting construction. The rollers 207 on the inner side of the pressure-distributing plate 206 facilitate the flexible rolling of the device on the construction surface, improving its mobility. The rotating component 208 set at one end of the fixed rod 201 can realize the angle adjustment between the fixed rods 201, enhancing the adaptability of the device in complex construction environments. The cooperation of each component ensures the concentricity of the inner tube 1 and the outer tube, effectively improving construction accuracy and efficiency, while also ensuring the stable movement of the device on the construction surface, meeting the needs of engineering construction.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The rotating assembly 208 includes multiple bearing plates 2081, which evenly distribute the pressure and enhance the stability of the device. One side of each bearing plate 2081 is slidably connected to the adjacent side of each fixed rod 201, allowing the bearing plates 2081 to slide flexibly relative to the fixed rods 201 to adapt to different situations. The inner side of each bearing plate 2081 is provided with a sliding groove 2082, which facilitates the installation and sliding of subsequent components and provides guidance for the operation of the device. The adjacent side of each fixed rod 201 is provided with a limiting groove 2083, which limits the relevant components and prevents them from excessive displacement. The inner side of each limiting groove 2083 is rolled with balls 2084, which can reduce the friction between components and make the device operate more smoothly.

[0040] Specifically, when the rotating assembly 208 is working, multiple bearing plates 2081 effectively enhance the overall stability of the device by evenly distributing the pressure they bear. One side of the bearing plate 2081 forms a sliding connection structure with the side adjacent to the fixed rod 201, allowing the bearing plate 2081 to slide flexibly relative to the fixed rod 201 according to the actual situation, realizing the adaptive adjustment of the device under different working conditions. The sliding groove 2082 opened on the inner side of the bearing plate 2081 provides a guide channel for the installation and sliding of subsequent components, enabling the components to run stably along a predetermined trajectory and ensuring the accuracy of the device's operation. The limiting groove 2083 opened on the side adjacent to the fixed rod 201 plays a limiting role for the components, preventing excessive displacement of the components and affecting the normal operation of the device by limiting the displacement range of the components. The rolling ball 2084 connected inside the limiting groove 2083 reduces the friction between components, making the components slide more smoothly, reducing the resistance loss during the operation of the device, improving the operating efficiency and service life of the device, and ensuring the stable and efficient operation of the rotating assembly 208.

[0041] Reference Figure 2 and Figure 4 Multiple bearing plates 2081 are slidably connected to the outer side of the ball bearings 2084 on adjacent sides, enabling relatively flexible sliding between the bearing plates 2081, reducing frictional resistance, and facilitating the device's adaptation to different operating conditions. The inner sides of multiple bearing plates 2081 are slidably connected to the outer side of the inner tube 1, allowing the bearing plates 2081 to slide stably outside the inner tube 1, providing support and guidance for the overall operation of the device. Quick connectors 3 are fixedly connected to both outer ends of the inner tube 1. The internal dimensions of the two quick connectors 3 are larger than the outer wall of the inner tube 1, facilitating quick connection with other pipe components, improving construction efficiency, and enabling the device to achieve [the desired results]. The pipeline system can be quickly assembled. Multiple unidirectional guide wheels 204 are equidistantly designed to ensure stability and balance during movement, allowing the device to move smoothly along a predetermined trajectory. Multiple sliders 203 are symmetrically designed for smoother sliding and more even force distribution. Multiple ball bearings 2084 are equidistantly arranged to ensure consistency and stability during rolling, effectively reducing friction loss. The unidirectional guide wheels 204 and sliders 203 are symmetrically designed. The horizontal height of the multiple ball bearings 2084 is arc-shaped, and the ball bearings 2084 are equidistantly arranged.

[0042] Specifically, the bearing plate 2081 is slidably connected to the ball bearing 2084 on its outer side, enabling flexible relative sliding between adjacent bearing plates 2081. The ball bearing 2084 effectively reduces frictional resistance, allowing the device to adapt to different operating conditions. The inner side of the bearing plate 2081 is slidably connected to the outer side of the inner tube 1, ensuring that the bearing plate 2081 can slide stably outside the inner tube 1, providing support and guidance for the overall operation of the device. The quick connectors 3 at both ends of the inner tube 1 can be quickly connected to other pipe components, improving construction efficiency and facilitating the rapid construction of the pipeline system. In addition, the multiple unidirectional guide wheels 204 adopt an equidistant design. During the movement of the device, the equidistant distribution maintains stability and balance, ensuring that the device moves smoothly along the predetermined trajectory. The symmetrical design of the multiple sliders 203 makes the sliding process smoother and the force more uniform. The equidistant arrangement of the multiple ball bearings 2084 ensures consistency and stability during rolling, effectively reducing frictional loss. Through precise connection and sliding cooperation, efficient and stable operation is achieved.

[0043] Working Principle: During construction, the inner pipe 1 serves as the foundation, providing installation support and pipeline transportation space for the entire device. The auxiliary concentric mechanism 2 plays its role. Multiple fixed rods 201 are slidably connected to the outside of the inner pipe 1, allowing for flexible sliding along the inner pipe 1 to adapt to different construction scenarios and position adjustment requirements. The connecting rods 202 on the left and right sides of the fixed rods 201 enhance the connection strength, ensuring the overall rigidity of the auxiliary concentric mechanism 2. The sliders 203 at both ends, in conjunction with the unidirectional guide wheels 204 connected to the inner side, reduce running friction resistance, ensuring smooth movement of the device in the predetermined direction. Simultaneously, the support plate 205 at one end of the outer side of the fixed rod 201 bears and disperses pressure, while the pressure-distributing plate 206 at the bottom evenly distributes pressure, preventing excessive local pressure from affecting construction. The rollers 207 on the inner side of the pressure-distributing plate 206 facilitate flexible rolling of the device on the construction surface, improving its mobility. The rotating components 208 located at adjacent ends of the fixed rods 201 enable the rotation between the fixed rods 201. Angle adjustment enhances the adaptability of the device in complex construction environments, ensures the concentricity of the inner tube 1 and the outer tube, effectively improves construction accuracy and efficiency, ensures the smooth movement of the device on the construction surface, and meets the needs of engineering construction. The adjacent sides of multiple bearing plates 2081 are connected to the outer side of the ball bearings 2084, realizing relatively flexible sliding between the bearing plates 2081, reducing frictional resistance, and facilitating the device to adapt to the operating requirements under different working conditions. The inner sides of multiple bearing plates 2081 are slidably connected to the outer side of the inner tube 1, enabling the bearing plates 2081 to slide stably outside the inner tube 1, providing support and guidance for the overall operation of the device. The outer ends of the inner tube 1 are fixedly connected to quick connectors 3, which facilitates quick connection with other pipe components, improves construction efficiency, and facilitates the rapid construction of pipelines. Multiple unidirectional guide wheels 204 adopt an equidistant design to ensure the stability and balance of the device during movement, allowing the device to move smoothly along the predetermined trajectory.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure, comprising an inner pipe (1), characterized in that: Multiple auxiliary concentric mechanisms (2) are provided on the outer side of the inner tube (1), which are used to improve the efficiency of the project; The auxiliary concentric mechanism (2) includes multiple fixed rods (201), each fixed rod (202) is fixedly connected to the left and right sides of the multiple fixed rods (201), each fixed rod (201) is fixedly connected to a slider (203) at both ends, each slider (203) is rotatably connected to a one-way guide wheel (204) on its inner side, each fixed rod (201) is fixedly connected to a support plate (205) at one outer end, each support plate (205) is fixedly connected to a pressure plate (206) at the bottom, each pressure plate (206) is fixedly connected to a roller (207) on its inner side, and each fixed rod (201) is provided with a rotating component (208) at one adjacent end.

2. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 1, characterized in that: The rotating assembly (208) includes multiple bearing plates (2081), each bearing plate (2081) has a sliding groove (2082) on its inner side, and each of the multiple fixed rods (201) has a limiting groove (2083) on its adjacent side, and each of the multiple limiting grooves (2083) has a ball bearing (2084) rollingly connected to its inner side.

3. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 2, characterized in that: The adjacent sides of the plurality of bearing plates (2081) are slidably connected to the outside of the ball (2084), and the inner sides of the plurality of bearing plates (2081) are slidably connected to the outside of the inner tube (1).

4. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 1, characterized in that: Both ends of the inner tube (1) are fixedly connected to quick connectors (3), and the internal dimensions of the two quick connectors (3) are larger than the outer wall of the inner tube (1).

5. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 1, characterized in that: The multiple unidirectional guide wheels (204) are all designed with equal spacing, and the multiple sliders (203) are all designed with symmetry.

6. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 2, characterized in that: The horizontal height of the multiple balls (2084) is set in an arc shape, and the multiple balls (2084) are arranged at equal intervals.

7. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 1, characterized in that: The adjacent sides of the plurality of fixed rods (201) are slidably connected to the outside of the inner tube (1).

8. The arc-shaped auxiliary traveling device for jacking construction of a large-section pipe-in-pipe structure according to claim 2, characterized in that: One side of each of the multiple bearing plates (2081) is slidably connected to the adjacent side of a multiple fixing rods (201).

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