Internal supporting structure of assembly type large-diameter glass fiber reinforced plastic pipeline

Abstract

The utility model discloses an assembly type large-diameter glass fiber reinforced plastic pipeline internal supporting structure which comprises a plurality of supporting pieces arranged in the axial direction, and each supporting piece comprises a frame, supporting blocks distributed in the circumferential direction and a connecting rod connecting the frame and the supporting blocks. An opening is formed in the center of the frame, an inserting groove communicated with the opening is formed in the radial direction, the connecting rod is slidably inserted into the inserting groove, and the end of the connecting rod can stretch into the opening. The multiple supporting pieces are connected through fixing rods penetrating through the holes. According to the structure, all the connecting rods are synchronously jacked up by inserting the fixing rods, so that the supporting blocks radially expand to realize rapid supporting and fixing, and the mounting efficiency is greatly improved. The sliding fit of the connecting rods and the slots ensures that the motion trails of the supporting blocks are stable, supporting force is evenly distributed, and pipeline deformation is avoided. The linkage design achieves the effect that one rod drives multiple points, and operation is easy, convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the field of composite material applications, and in particular to an internal support structure for prefabricated large-diameter fiberglass pipes. Background Technology

[0002] Currently, large-diameter fiberglass reinforced plastic (FRP) pipes are widely used in municipal and chemical industries due to their advantages such as lightweight, high strength, corrosion resistance, and long service life. However, during transportation, installation, and operation, the large diameter and thin wall of the pipes make them prone to deformation, collapse, or localized stress concentration, affecting the structural stability and service life of the pipelines.

[0003] Therefore, large-diameter FRP (fiberglass reinforced plastic) pipes require internal support structures to prevent damage during installation and transportation. Existing technologies typically address this through the following methods: 1. Welding or bolting steel support rings inside the pipe, but this presents problems such as heavy weight, susceptibility to corrosion, and inconvenient disassembly; 2. Adding reinforcing ribs to the outer wall of the pipe, but this cannot effectively prevent internal wall deformation during transportation and installation; Temporary wooden or foam supports: These are only suitable for short-distance transportation, cannot meet long-term usage needs, and have poor environmental performance. Furthermore, the support structures described above are not removable or reusable, leading to low construction efficiency and high costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an internal support structure for prefabricated large-diameter fiberglass pipes.

[0005] This utility model provides an internal support structure for a prefabricated large-diameter fiberglass pipe, comprising multiple support members arranged along the axial direction of the pipe. Each support member includes a frame, on which multiple support blocks are distributed circumferentially. The support blocks are connected to the frame via connecting rods. An opening is provided at the center of the frame, and a slot is also provided on the frame along the radial direction of the frame. The end of the slot away from the support block communicates with the opening. One end of the connecting rod is inserted into the slot and can slide within the slot. The end of the connecting rod away from the support block can extend into the opening. The multiple support members are connected by a fixing rod, which is inserted into the opening.

[0006] Through the aforementioned technical solution, this support structure, with its design of inserting fixed rods into the openings, can simultaneously lift all connecting rods, achieving synchronous radial expansion of the support blocks and thus quickly completing the support and fixation of the pipe's inner wall. This linkage structure significantly improves installation efficiency, greatly reducing operation time compared to the traditional method of adjusting support points one by one. Simultaneously, the sliding fit of the connecting rods within the slots ensures stable movement of the support blocks, preventing jamming or skewness and ensuring even distribution of support force. The connection design between the openings and slots achieves a "one rod drives multiple points" mechanical linkage effect; simply inserting the fixed rod completes the deployment and positioning of the entire support structure.

[0007] As a preferred embodiment of this invention, one end of the fixing rod is provided with a tapered guide portion.

[0008] The above technical solution simplifies the assembly process by using a tapered guide at the end of the fixing rod, making it easier to insert the fixing rod into the openings of multiple support components, reducing installation resistance, and improving construction convenience. This design avoids the time-consuming installation problem caused by alignment difficulties in traditional support structures, and is particularly suitable for internal support installation in confined spaces or long-distance pipelines, improving the practicality and operability of the structure.

[0009] As a preferred embodiment of this utility model, threads are provided at both ends of the fixed rod along the axial direction, and locking nuts for limiting the support member are also provided at both ends of the fixed rod along the axial direction.

[0010] Through the above technical solution, the threaded and locking nut design at both ends of the fixing rod can precisely control the spacing between the support components, and the locking of the nuts prevents the support components from shifting inside the pipe, ensuring support stability. This structure not only enhances the overall reliability of the support but also adapts to the needs of pipes of different lengths, making the support structure adjustable and reusable, and reducing construction costs.

[0011] As a preferred embodiment of this utility model, a fixing ring is also provided on the support member, and two adjacent support members are connected by a pull rope in the axial direction of the pipe, and the pull rope is fixedly connected to the fixing ring.

[0012] The above technical solution ensures that the connection between the fixing ring and the pull rope maintains a uniform spacing between adjacent support components, preventing them from tilting or misaligning within the pipe and ensuring a balanced distribution of support force. This design is particularly suitable for internal support of long-distance pipelines. The flexible connection of the pull rope ensures structural stability without causing localized stress concentration on the inner wall of the pipe, thus extending the service life of the pipeline.

[0013] As a preferred embodiment of this utility model, a distance adjustment device is further provided between the support block and the connecting rod, which can adjust the distance between the support block and the connecting rod along the length direction of the connecting rod.

[0014] Through the above technical solution, the adjustable distance device allows for precise adjustment of the distance between the support block and the connecting rod, thereby adapting to the support requirements of different pipe diameters and improving the versatility of the structure. This design avoids the problem that traditional fixed support structures cannot adapt to various pipe specifications, enabling the same support device to be used in different engineering scenarios and reducing equipment procurement and maintenance costs.

[0015] As a preferred embodiment of this utility model, the adjusting device includes a lead screw, one end of which is threadedly connected to the connecting rod, and the other end of which is rotatably connected to the support block. A handle is also provided on the lead screw.

[0016] The aforementioned technical solution, with its combination of a lead screw and a handle, makes adjusting the support block more convenient. Construction workers can quickly adjust the support diameter by turning the handle without the need for additional tools. This design improves construction efficiency, while the threaded connection ensures stability after adjustment, preventing the support block from loosening inside the pipe and enhancing the reliability of the support.

[0017] As a preferred embodiment of this invention, the lead screw is further provided with scale lines.

[0018] Through the above technical solution, the scale lines on the lead screw can intuitively display the adjustment distance, enabling construction personnel to precisely control the displacement of the support block and ensure a tight fit between the support structure and the inner wall of the pipe. This design avoids the problems of insufficient or excessive support caused by inaccurate adjustment in traditional support structures, improves construction quality, and reduces the time cost of repeated adjustments.

[0019] In summary, this utility model has at least one of the following beneficial technical effects:

[0020] 1. This utility model achieves a "one-rod-driven-multiple-point" mechanical linkage effect through the coordinated design of the fixed rod, opening, and slot. When the fixed rod is inserted into the opening at the center of the support component, it simultaneously lifts all the connecting rods, causing the circumferentially distributed support blocks to expand outward synchronously, quickly completing the support and fixation of the inner wall of the pipe. Compared with the traditional solution that requires adjusting each support point individually, this design significantly improves installation efficiency and greatly shortens operation time. Simultaneously, the sliding engagement of the connecting rods within the slots ensures the stability of the support block's movement trajectory, preventing jamming or skewness, and allowing the supporting force to be evenly distributed on the inner wall of the pipe, effectively preventing pipe deformation caused by localized stress concentration. This structure is particularly suitable for the rapid installation needs of large-diameter pipes.

[0021] 2. This utility model achieves precise adjustment of the support block position through the cooperation of a screw-adjustable device and a scale. The operator can rotate the screw by turning the handle and visually control the radial displacement of the support block according to the scale, allowing the support structure to accurately adapt to the support requirements of different pipe diameters. The adjustment device uses a threaded drive and has a self-locking function after adjustment, ensuring the support block maintains a stable position within the pipe and preventing loosening due to vibration or external forces. Simultaneously, the support block and connecting rod are rotatably connected, automatically adjusting the angle during adjustment to ensure optimal contact between the support surface and the inner wall of the pipe. This adjustable design greatly improves the versatility and adaptability of the support structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the internal support structure for the assembled large-diameter fiberglass pipe of this utility model.

[0023] Figure 2 This is a structural schematic diagram of a single support component of this utility model.

[0024] Figure 3 This is a utility model Figure 2 Enlarged view of part A.

[0025] Figure 4 This is a utility model Figure 2 Enlarged view of part B.

[0026] Figure 5 This is a cross-sectional view of the present invention.

[0027] The components in the diagram are: 1. Pipe; 2. Opening; 3. Connecting rod; 4. Lead screw; 5. Scale line; 6. Support block; 8. Handle; 9. Slot; 10. Fixing ring; 11. Pull rope; 12. Fixing rod; 13. Conical guide; 14. Locking nut; 15. Frame. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0029] Example 1:

[0030] Reference Figure 1 This embodiment discloses an internal support structure for a prefabricated large-diameter fiberglass pipe, including multiple support members arranged along the axial direction of the pipe 1, as shown in the figure. Figure 1 In this embodiment, five support members are equidistantly arranged inside pipe 1 along the axial direction of pipe 1. (Refer to...) Figures 2 to 5Each support member includes a frame 15, on which a plurality of support blocks 6 are distributed circumferentially. In this embodiment, six support blocks 6 are equidistantly distributed circumferentially on the frame 15 of a single support member. The side of the support block 6 away from the frame 15 is provided with an arc-shaped support surface for contacting the inside of the pipe 1, thereby supporting the pipe 1.

[0031] In this embodiment, the support block 6 is connected to the frame 15 via a connecting rod 3. An opening 2 is provided at the center of the support frame 15, and slots 9 are also provided on the frame 15 in a radial direction. In this embodiment, the number of slots 9 is the same as the number of support blocks 6, both being six. The end of the slot 9 furthest from the support block 6 communicates with the opening 2. One end of the connecting rod 3 is inserted into the slot 9, allowing it to slide within the slot 9, and the end of the connecting rod 3 furthest from the support block 6 can extend into the opening 2. When no external force is applied, the connecting rod 3 will extend into the opening 2 due to gravity. Multiple support members are connected by a fixing rod 12, which is inserted into the opening 3. Inserting the fixing rod 12 into the opening 2 will push the connecting rod 3 towards the inner wall 1 of the pipe, thereby increasing the support diameter of the support block 6.

[0032] In this embodiment, the internal support structure for the assembled large-diameter fiberglass pipe involves first arranging the various support components along the axial direction of the pipe 1. The number of support components is determined by the length of the pipe 1. Then, fixing rods 12 are inserted into the openings 2 on the frames 15 of each support component. The fixing rods 12 lift the connecting rods 3, thereby lifting the support blocks 6 towards the inner side of the pipe 1, so that the support blocks 6 abut against the inner wall of the pipe 1, thus completing the support of the large-diameter fiberglass pipe. To facilitate the insertion of the fixing rods 12 into the openings 2, a tapered guide portion 13 is provided at one end of the fixing rod 12 in this embodiment, allowing the fixing rod 12 to be easily inserted into the opening 2.

[0033] Threads are provided at both ends of the fixed rod 12 along its axial direction, and locking nuts 14 are also provided at both ends of the fixed rod 12 along its axial direction to limit the movement of the support member. The locking nuts 14 limit the movement of the support member on both sides, preventing displacement.

[0034] Example 2:

[0035] In this embodiment, everything else is the same as in Embodiment 1. The difference is that, in order to ensure consistent distances between the various support components and achieve a better support effect, a fixing ring 10 is also provided on each support component. Adjacent support components are connected along the axial direction of pipe 1 by a pull rope 11, which is fixedly connected to the fixing ring 10. The limiting effect of the pull rope 11 ensures that the distances between the support components are the same, thus improving the support effect.

[0036] Example 3:

[0037] The rest of this embodiment is the same as that of embodiment 1. The difference is that in this embodiment, an adjustment device is also provided between the support block 6 and the connecting rod 3, which can adjust the distance between the support block 6 and the connecting rod 3 along the length direction of the connecting rod 3.

[0038] The adjusting device includes a lead screw 4, one end of which is threadedly connected to the connecting rod 3, and the other end of which is rotatably connected to the support block 6. A handle 8 is also provided on the lead screw 4. Scale lines 5 are also provided on the lead screw 4. By rotating the handle 8, the lead screw 4 is rotated, thereby adjusting the distance from the support block 6 to the center of the frame 15, which is equivalent to adjusting the diameter of the support component. This allows it to be used with large-diameter fiberglass pipes of different diameters.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An internal support structure for prefabricated large-diameter fiberglass pipes, characterized in that: The system includes multiple support members arranged axially along the pipe (1). Each support member includes a frame (15). Multiple support blocks (6) are distributed circumferentially on the frame (15). The support blocks (6) are connected to the frame via connecting rods (3). An opening (2) is provided at the center of the support member frame. A slot (9) is also provided on the frame (15) in the radial direction of the frame (15). One end of the slot (9) away from the support block (6) communicates with the opening (2). One end of the connecting rod (3) is inserted into the slot (9). The connecting rod (3) can slide in the slot (9), and the end of the connecting rod (3) away from the support block (6) can extend into the opening (2). The multiple support members are connected by a fixing rod (12), which is inserted into the opening (2).

2. The internal support structure for prefabricated large-diameter fiberglass pipes according to claim 1, characterized in that: One end of the fixing rod (12) is provided with a tapered guide (13).

3. The internal support structure for prefabricated large-diameter fiberglass pipes according to claim 2, characterized in that: Threads are provided at both ends of the fixed rod (12) axially, and locking nuts (14) for limiting the support are also provided at both ends of the fixed rod (12) axially.

4. The internal support structure for prefabricated large-diameter fiberglass pipes according to claim 1, characterized in that: A fixing ring (10) is also provided on the support member. Two adjacent support members are connected by a pull rope (11) in the axial direction of the pipe (1). The pull rope (11) is fixedly connected to the fixing ring (10).

5. The internal support structure for prefabricated large-diameter fiberglass pipes according to claim 1, characterized in that: A distance adjustment device is also provided between the support block (6) and the connecting rod (3) to adjust the distance between the support block (6) and the connecting rod (3) along the length direction of the connecting rod (3).

6. The internal support structure for prefabricated large-diameter fiberglass pipes according to claim 5, characterized in that: The adjusting device includes a lead screw (4), one end of which is threaded to the connecting rod (3), and the other end of which is rotatably connected to the support block (6). A handle (8) is also provided on the lead screw (4).

7. The internal support structure for prefabricated large-diameter fiberglass pipes according to claim 6, characterized in that: The lead screw (4) is also provided with scale lines (5).

Images