A new unit pullback internal support device for large pipe diameter chemical pipe

Abstract

The utility model discloses a novel unit traction type inner support device for large pipe diameter chemical pipe, including connecting shaft, support arm and rubber roller of rotation arrangement in support arm movable end fixed on the outside wall of connecting shaft, the end of connecting shaft is provided with the plug -in structure for the continuous splicing connecting axle, and support arm is distributed around the axis of connecting axle equiangularly, and support arm is not less than three, because it can be used for reinforcing the ring stiffness of chemical pipe of different diameters, different lengths when backfill operation, increase the application scope of pipe material, can realize the front and back movement of inner support device along pipeline through rubber roller to satisfy the pipeline backfill operation transfer demand, need not repeatedly disassembling and assembling, save time and manpower greatly, can realize the misregistration support of 60 of adjacent support device support point DE, avoid the local deformation of pipeline.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline traction support devices, and in particular to a novel unit traction internal support device for large-diameter chemical pipes. Background Technology

[0002] With the continuous advancement and development of new processes and materials, an increasing number of large-diameter chemical pipes are being used in engineering construction. Chemical pipes (such as HDPE) rely on ring stiffness and the combined effect of soil and structure to resist external loads. Large-diameter pipes (DN≥600mm) are prone to radial deformation due to soil pressure, construction machinery loads, or groundwater when not backfilled or partially backfilled, especially under high-temperature environments where material creep is significant. While trench backfilling requires layered compaction, lateral soil pressure and vertical loads can cause temporary out-of-roundness of the pipe, affecting subsequent water tightness tests and long-term service performance.

[0003] Traditional sandbags or steel supports cannot adapt to the full circumferential support of large-diameter pipes and are difficult to disassemble; mechanical vibration during backfilling may cause the supports to loosen and shift, resulting in local stress concentration; if the rigid supports do not make uniform contact with the pipe wall, they may scratch the inner wall of the pipe. Summary of the Invention

[0004] The technical problems to be solved by this utility model are: the internal support device cannot move inside the pipe, resulting in repeated installation and disassembly, which takes up too much time; the internal support devices are not connected to form a whole, causing the local support devices inside the pipe to shift and fail to achieve the support effect; and rigid supports are prone to damaging the pipe.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel unit traction internal support device for large-diameter chemical pipes, including a connecting shaft, a support arm fixed on the outer wall of the connecting shaft, and a rubber roller rotatably arranged at the movable end of the support arm. The end of the connecting shaft is provided with a plug-in structure for continuous splicing of the connecting shaft. The support arms are distributed at equal angles around the axis of the connecting shaft, and there are no fewer than three support arms.

[0006] Preferably, the insertion structure includes a plug end and a socket end respectively disposed at both ends of the connecting shaft. When the plug end and the socket end are connected, the outer wall of the plug end fits against the inner wall of the socket end, and a vertical insertion limiting and locking structure is provided between the plug end and the socket end.

[0007] Preferably, the cross-sections of the spigot end and the socket end are both equilateral triangles.

[0008] Preferably, at least one side wall of the socket end is provided with a pin hole, and each side wall of the insertion end is provided with a connecting hole at a position corresponding to the pin hole on the socket end, and the pin hole and the connecting hole are connected by a pin.

[0009] Preferably, the support arm is a telescopic arm structure, which includes a fixed rod and a movable rod axially slidably disposed at the movable end of the fixed rod. Limiting holes are provided on the outer side walls of both the fixed rod and the movable rod, and the limiting holes are equidistantly distributed along the axial direction of the fixed rod and the movable rod.

[0010] Preferably, fixed rotating shafts are fixedly installed on both sides of the end of the movable rod, and the rubber roller is rotatably connected between the two fixed rotating shafts.

[0011] Preferably, a mounting disk is coaxially connected to the connecting shaft, and the support arm is fixedly connected to the mounting disk.

[0012] Preferably, a locking hole is provided on the outer wall of the mounting disc, and a threaded hole corresponding to the locking hole is provided on the connecting shaft. The mounting disc is connected to the connecting shaft by bolts.

[0013] Preferably, the threaded holes are equidistantly distributed along the axial direction of the connecting shaft.

[0014] Preferably, the outer circumferential surface of the rubber roller is provided with anti-slip texture, which is annular grooves or spiral protrusions distributed along the circumference of the rubber roller.

[0015] This utility model provides a novel unit-type traction support device for large-diameter chemical pipes, which has the following beneficial effects.

[0016] 1. Adjust the length of the fixed telescopic rod through the limiting hole according to the different diameters of the chemical pipes to meet the internal support needs of different pipe diameters.

[0017] 2. The length of the internal support device is increased by connecting the splicing units to make it suitable for backfilling sections of different lengths.

[0018] 3. The internal support device can be moved back and forth along the pipeline by rubber rollers to meet the transfer needs of pipeline backfilling operations. That is, after the pipeline backfilling operation is completed, the device can be moved to the next backfilling operation section by the worker pulling it at the front end, without the need for repeated disassembly and reassembly.

[0019] 4. The triangular connecting shaft enables 60° staggered support between adjacent support points, avoiding local depressions and deformations during layered backfilling, which could lead to failure to pass inspection and economic losses of materials. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the unit of this utility model.

[0023] Figure 3 This is a schematic diagram of the telescopic rod of this utility model.

[0024] Figure 4 This is a schematic diagram of the assembly of this utility model.

[0025] Figure 5 This is a schematic diagram of the traction working condition of this utility model.

[0026] In the diagram: 1. Mounting disc; 3. Rubber roller; 4. Connecting shaft; 5. Fixing shaft; 6. Insert end; 7. Socket end; 8. Limiting hole; 9. Support arm; 10. Pin. Detailed Implementation

[0027] like Figure 1-5 As shown, this utility model provides a novel unit traction internal support device for large-diameter chemical pipes, including a connecting shaft 4, a support arm 9 fixed on the outer wall of the connecting shaft 4, and a rubber roller 3 rotatably arranged at the movable end of the support arm 9. The end of the connecting shaft 4 is provided with a plug-in structure for continuous splicing of the connecting shaft 4. The support arms 9 are distributed at equal angles around the axis of the connecting shaft 4, and there are no fewer than three support arms 9.

[0028] Based on the length of the chemical tubing, the first support device is slidably placed at the end of the tubing. Then, subsequent connecting shafts 4 are inserted into the end of the connecting shaft 4. After fixing adjacent connecting shafts 4 through the insertion structure, the support device is pushed into the chemical tubing, continuously extending it inwards. Finally, by continuously splicing the connecting shafts 4, the support device provides stable support for the entire chemical tubing. The support device uses three support arms 9 to support the interior of the chemical tubing. Simultaneously, the insertion devices between adjacent support shafts 4 ensure that the entire support device formed after continuous splicing is on the same axis as the chemical tubing, providing stable support and preventing radial deformation or bending of the chemical tubing.

[0029] like Figure 2 and Figure 4 As shown. The insertion structure includes a plug end 6 and a socket end 7 respectively disposed at both ends of the connecting shaft 4. When the plug end 6 and the socket end 7 are mated, the outer wall of the plug end 6 fits against the inner wall of the socket end 7. A vertical insertion limiting and locking structure is provided between the plug end 6 and the socket end 7. When continuously splicing the connecting shaft 4, the plug end 6 of the end of the subsequent connecting shaft 4 is inserted into the socket end 7 of the previous connecting shaft 4, and then the limiting and locking structure is used to fix the connection between the plug end 6 and the socket end 7, thereby realizing the fixed connection between two adjacent connecting shafts 4.

[0030] like Figure 1As shown, the cross-sections of both the spigot end 6 and the socket end 7 are equilateral triangles. Setting the spigot end 6 and the socket end 7 as a triangular tube structure enhances the shear resistance between adjacent connecting ends 4.

[0031] like Figure 4 As shown. At least one side wall of the socket end 7 has a pin hole, and each side wall of the insertion end 6 has a connecting hole corresponding to the pin hole on the socket end 7. The pin hole and the connecting hole are connected by a pin 10. When the insertion end 6 is inserted into the socket end 7, the pin hole on the socket end 7 aligns with one of the three connecting holes on the insertion end 6, and then the socket end 7 and the insertion end 6 are fixedly connected by the pin 10.

[0032] like Figure 3 As shown. The support arm 9 is a telescopic arm structure, comprising a fixed rod and a movable rod axially slidably disposed at the movable end of the fixed rod. Limiting holes 8 are provided on the outer walls of both the fixed rod and the movable rod, and the limiting holes 8 are equidistantly distributed along the axial direction of the fixed rod and the movable rod. By adjusting the length of the support arm 9, the support device can accommodate chemical pipes of different diameters, ensuring a stable connection between the rubber roller 3 and the inner wall of the chemical pipe.

[0033] like Figure 2 As shown, fixed rotating shafts 5 are fixedly installed on both sides of the end of the movable rod, and the rubber roller 3 is rotatably connected between the two fixed rotating shafts 5. The rotation of the rubber roller 3 is achieved through the two fixed rotating shafts 5, ensuring the stability of the rubber roller 3 installation.

[0034] In a preferred embodiment of this utility model, a mounting disk 1 is coaxially connected to the connecting shaft 4, and the support arm 9 is fixedly connected to the mounting disk 1. The support arm 9 is stably installed via the mounting disk 1, which is coaxial with the connecting shaft 4. The support arm 9 is welded to the side wall of the mounting disk 1, ensuring that the support arm 9 and the connecting shaft 4 are coaxial.

[0035] As a preferred embodiment of this utility model, a locking hole is provided on the outer wall of the mounting disc 1, and a threaded hole corresponding to the locking hole is provided on the connecting shaft 4. The mounting disc 1 is connected to the connecting shaft 4 by bolts. The mounting disc 1 and the connecting shaft 4 are fixedly connected by bolts, which facilitates the assembly and disassembly of the mounting disc 1 and allows for storage and transportation after construction.

[0036] As a preferred embodiment of this utility model, the threaded holes are equidistantly distributed along the axial direction of the connecting shaft 4. Depending on the length of the connecting shaft 4 and the diameter of the chemical tubing, for chemical tubing with a larger diameter, multiple mounting discs 1 are selectively installed on the connecting shaft 4 to increase the support density for the chemical tubing.

[0037] As a preferred embodiment of this utility model, the outer circumferential surface of the rubber roller 3 is provided with anti-slip patterns, which are annular grooves or spiral protrusions distributed along the circumference of the rubber roller 3. By adding anti-slip patterns to the rubber roller 3, slippage inside the chemical pipe is prevented when moving the inner support device, thus avoiding scratching the inner wall of the chemical pipe.

Claims

1. A novel unit-type traction internal support device for large-diameter chemical pipes, characterized in that: It includes a connecting shaft (4), a support arm (9) fixed on the outer wall of the connecting shaft (4), and a rubber roller (3) rotatably arranged at the movable end of the support arm (9). The end of the connecting shaft (4) is provided with a plug-in structure for continuous splicing of the connecting shaft (4). The support arms (9) are distributed at equal angles around the axis of the connecting shaft (4), and there are no less than three support arms (9).

2. The novel unit-traction internal support device for large-diameter chemical pipes as described in claim 1, characterized in that: The plug-in structure includes a plug end (6) and a socket end (7) respectively disposed at both ends of the connecting shaft (4). When the plug end (6) and the socket end (7) are connected, the outer wall of the plug end (6) fits against the inner wall of the socket end (7). A vertical plug-in limiting and locking structure is provided between the plug end (6) and the socket end (7).

3. The novel unit-type traction internal support device for large-diameter chemical pipes as described in claim 2, characterized in that: The cross-sections of the socket end (6) and the socket end (7) are both equilateral triangles.

4. The novel unit-traction internal support device for large-diameter chemical pipes as described in claim 3, characterized in that: At least one side wall of the socket end (7) is provided with a pin hole, and each side wall of the plug end (6) is provided with a connecting hole at a position corresponding to the pin hole on the socket end (7). The pin hole and the connecting hole are connected by a pin (10).

5. The novel unit-type traction internal support device for large-diameter chemical pipes as described in claim 1, characterized in that: The support arm (9) is a telescopic arm structure. The support arm (9) includes a fixed rod and a movable rod that is axially slidably disposed at the movable end of the fixed rod. Limiting holes (8) are provided on the outer side walls of both the fixed rod and the movable rod, and the limiting holes (8) are equidistantly distributed along the axial direction of the fixed rod and the movable rod.

6. The novel unit-traction internal support device for large-diameter chemical pipes as described in claim 5, characterized in that: Fixed rotating shafts (5) are fixedly installed on both sides of the end of the movable rod, and the rubber roller (3) is rotatably connected between the two fixed rotating shafts (5).

7. The novel unit-type traction internal support device for large-diameter chemical pipes as described in claim 1, characterized in that: The mounting disc (1) is coaxially connected to the connecting shaft (4), and the support arm (9) is fixedly connected to the mounting disc (1).

8. The novel unit-type traction internal support device for large-diameter chemical pipes as described in claim 7, characterized in that: The mounting disc (1) has a locking hole on its outer side wall, and the connecting shaft (4) has a threaded hole corresponding to the locking hole. The mounting disc (1) is connected to the connecting shaft (4) by bolts.

9. The novel unit-traction internal support device for large-diameter chemical pipes as described in claim 8, characterized in that: The threaded holes are equidistantly distributed along the axial direction of the connecting shaft (4).

10. The novel unit-traction internal support device for large-diameter chemical pipes as described in claim 1, characterized in that: The outer circumferential surface of the rubber roller (3) is provided with anti-slip texture, which is annular grooves or spiral protrusions distributed along the circumference of the rubber roller (3).

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