Non-excavation repairing device for double-wall corrugated pipe with slight collapse deformation

Abstract

The utility model relates to the technical field of non-excavation repair of drainage pipelines, and discloses a non-excavation repair device for a double-wall corrugated pipe with slight collapse deformation, which is characterized in that a fixed block is arranged at the end part of a fixed shaft; the center hole jack is arranged on the fixed shaft in a sleeving manner and is fixedly connected with the fixed block; a movable top block is arranged at the telescopic end of the center hole jack; the movable ejector block is hinged to the first end of the connecting rod set, and the second end of the connecting rod set is connected with the expansion plate. The pipeline supporting steel ring is used for being arranged on the expansion plate in a sleeving mode. The telescopic end of the center hole jack drives the movable ejector block to move along the fixed shaft, the movable ejector block drives the connecting rod set to expand in the radial direction, and the expansion plate expands the pipeline supporting steel ring to support an original pipeline. The expansion plate is driven by the center hole jack to expand outwards, the deformed pipeline is jacked to be round, the pipeline supporting steel ring is opened to be attached to the original pipeline synchronously, and local non-excavation repairing of the double-wall corrugated pipe with slight collapse deformation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of trenchless repair technology for drainage pipelines, and in particular to a trenchless repair device for a slightly collapsed and deformed double-walled corrugated pipe. Background Technology

[0002] Double-wall corrugated pipes have been widely used in drainage pipeline construction in recent years due to their excellent properties such as strong resistance to external pressure, low engineering cost, low internal wall friction coefficient, good chemical stability, and long service life. However, due to inadequate quality control of pipe materials and construction, pipe aging, and the influence of the surrounding environment, double-wall corrugated pipes gradually develop structural and functional defects such as collapse, deformation, and rupture over time. These defects will, on the one hand, lead to a reduction in the original pipeline flow area, causing blockages and affecting sewage collection and transportation as well as rainwater collection and discharge; on the other hand, they may cause soil erosion around the pipe, forming cavities, leading to road subsidence and collapse, and posing safety hazards.

[0003] Commonly used trenchless pipe repair methods, such as UV curing, in-situ thermoplastic molding, point-based in-situ curing, and stainless steel quick-locking, do not meet the repair requirements when pipes collapse or deform, and cannot be directly used for repairing collapsed and deformed double-wall corrugated pipes. Currently, the main repair methods for collapsed and deformed double-wall corrugated pipes are open-cut repair and trenchless repair. Traditional open-cut repair has a long construction period, a large workload, and seriously affects road traffic, generating environmental pollution such as dust and noise. Trenchless repair methods mainly involve short-pipe replacement. However, short-pipe replacement often encounters problems such as plastic pipes clumping together, high pipe resistance, and difficulty in jacking, and even when there is slight collapse or deformation in a certain part of the pipe (not exceeding 50% of the pipe diameter), the entire section still needs to be replaced, resulting in high costs.

[0004] Therefore, improvements are needed. Utility Model Content

[0005] The technical problem solved by this utility model is to address the deficiencies in the prior art by providing a trenchless repair device for slightly collapsed and deformed double-walled corrugated pipes, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a trenchless repair device for a slightly collapsed and deformed double-walled corrugated pipe, comprising: a fixed shaft, with a fixed block provided at the end of the fixed shaft; a through-type jack, one or more through-type jacks, the through-type jacks being sleeved on the fixed shaft and connected and fixed to the fixed block; a movable top block provided at the telescopic end of the through-type jack; the movable top block being hinged to the first end of a connecting rod assembly, the second end of the connecting rod assembly being connected to an expansion plate; and a pipe support steel ring, the pipe support steel ring being sleeved on the expansion plate; wherein, the telescopic end of the through-type jack drives the movable top block to move along the fixed shaft, the movable top block drives the connecting rod assembly to unfold in the radial direction, and the expansion plate expands the pipe support steel ring to form support for the original pipe.

[0007] Furthermore, there are two sets of through-hole jacks; fixed blocks are respectively provided at both ends of the fixed shaft; the through-hole jacks are respectively sleeved on the fixed shaft, and the through-hole jacks are respectively connected to the fixed blocks.

[0008] Furthermore, the telescopic ends of the two through-hole jacks are arranged opposite each other.

[0009] Furthermore, the fixed shaft includes two or more shaft segments, which are threaded together.

[0010] Furthermore, the through-type jack is sleeved on the fixed shaft, the fixed end of the through-type jack is connected to the fixed block by bolts, and the moving end of the through-type jack is connected to the moving top block by bolts.

[0011] Furthermore, the through-hole jack, the fixed block, and the movable top block are arranged in two sets, symmetrically about the centerline of the fixed axis.

[0012] Furthermore, the number of the linkage group is five linkages, which are arranged in a circular array; the number of the expansion plates is five; wherein, the two ends of the linkage are respectively hinged to the expansion plate and the movable top block.

[0013] Furthermore, the surface of the expansion plate is provided with grooves for fixing the pipe support steel ring.

[0014] Furthermore, the pipe support ring is a unidirectional expansion self-locking stainless steel ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model is an assembly structure. When in use, it is assembled in the original pipeline inspection well. The three fixed shafts pass through the through-hole jack and the movable top block and are connected into a whole by threads. The through-hole jack is connected to the fixed top block and the movable top block by bolts. Then the pipeline support steel ring is fixed in the groove on the outside of the expansion plate.

[0017] 2. This utility model, through the installation of a fixed shaft, a fixed top block, a through-hole jack, a movable top block, a connecting rod, an expansion plate, and a pipe support steel ring, allows for the following operation: During use, the repair device is moved to the deformed pipe location by pulling, simultaneously activating the symmetrically arranged through-hole jacks to lift the pipe. The movable end of the jack pushes the movable top block, thereby driving the connecting rod to open the expansion plate, lifting the deformed pipe back to its original shape. Simultaneously, the expansion plate opens the pipe support steel ring to fit against the original pipe, self-locking and supporting the original pipe. Then, the through-hole jack is activated to pull back the pipe, causing the movable end of the jack to pull back the movable top block. The expansion plate contracts and disengages from the pipe support steel ring, allowing the repair device to be retrieved, completing a partial trenchless repair.

[0018] 3. This utility model, under trenchless conditions, utilizes existing pipeline inspection wells and pipelines to simultaneously achieve pipeline recirculation and lining installation. Compared to excavation repair, this device does not occupy roads, does not excavate road surfaces, does not generate environmental pollution, has a short construction period, and low cost. Compared to the overall repair of short pipe replacement, this device only performs local repair, reducing repair costs. In addition, this device performs pipeline recirculation and lining support simultaneously, avoiding the situation where the pipeline deforms again under external soil pressure after recirculation but before the lining support is installed, thus affecting the local lining repair effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model when unfolded.

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0022] Reference numerals in the attached diagram: 1. Fixed shaft; 2. Through-type jack; 3. Fixed block; 4. Moving jack block; 5. Connecting rod assembly; 6. Expansion plate; 7. Pipe support steel ring. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In view of the technical problems described in the background art, such as Figure 1-3As shown, a trenchless repair device for a slightly collapsed and deformed double-walled corrugated pipe is provided, comprising: a fixed shaft 1, with a fixed block 3 at one end of the fixed shaft 1; a through-type jack 2, wherein there is one or more through-type jacks 2, which are sleeved on the fixed shaft 1 and connected and fixed to the fixed block 3; a movable top block 4 is provided at the telescopic end of the through-type jack 2; the movable top block 4 is hinged to the first end of the connecting rod assembly 5, and the second end of the connecting rod assembly 5 is connected to the expansion plate 6; and a pipe support steel ring 7, which is used to be sleeved on the expansion plate 6; wherein, the telescopic end of the through-type jack 2 drives the movable top block 4 to move along the fixed shaft 1, the movable top block 4 drives the connecting rod assembly 5 to unfold in the radial direction, and the expansion plate 6 expands the pipe support steel ring 7 to form support for the original pipe.

[0026] In the above scheme, the fixed shaft 1 is a rod of a certain length. The appropriate length of the fixed shaft 1 can be selected according to the actual use. The fixed shaft 1 can be formed by splicing two or more shaft segments, for example, by splicing three shaft segments, and can be connected by thread. Fixed blocks 3 are fixed at both ends of the fixed shaft 1. In use, the through-type jack 2 is sleeved on the fixed shaft 1, and the through-type jack 2 is fixedly connected to the fixed blocks 3 by bolts.

[0027] A movable top block 4 is provided on the telescopic end of the through-hole jack 2. The movable top block 4 can be bolted to the telescopic end of the through-hole jack 2. A connecting rod group 5 is hinged to the movable top block 4. The number of connecting rod groups 5 is two or more. Preferably, in this embodiment, the connecting rod group 5 adopts the form of five connecting rods, which are distributed in a circumferential array. Of course, other numbers of connecting rods can also be used, and there is no limitation on this. Since the number of expansion plates 6 is the same as the number of connecting rods, five expansion plates 6 are also selected. The connecting rods are hinged to the telescopic top block and the expansion plates 6 respectively. A pipe support steel ring 7 is provided outside the expansion plate 6. The pipe support steel ring 7 is a one-way expanding self-locking stainless steel ring, that is, after expansion, the pipe support steel ring 7 forms a support with the original pipe and does not return to its original position.

[0028] The specific usage process is as follows: During use, the device is assembled inside the original pipeline inspection well. The three fixed shafts 1 pass through the through-hole jack 2 and the movable jack block 4, and are then connected as a whole by threads. The through-hole jack 2 and the fixed block 3 are connected by bolts, as are the through-hole jack 2 and the movable jack block 4. Then, the pipeline support steel ring 7 is fixed in the groove on the outside of the expansion plate 6. The repair device is moved to the deformed position of the pipeline by pulling, and the lifting action of the through-hole jack 2 is activated. The moving end of the jack pushes the movable jack block 4 to move, thereby driving the connecting rod assembly 5 to open the expansion plate 6, lifting the deformed pipeline back to its original position. The expansion plate 6 simultaneously opens the pipeline support steel ring 7 to fit against the original pipeline, and the pipeline support steel ring 7 self-locks and supports the original pipeline. Then, the pull-back action of the through-hole jack 2 is activated. The moving end of the through-hole jack 2 drives the movable jack block 4 to pull back, the expansion plate 6 contracts and disengages from the pipeline support steel ring 7, and the repair device is retrieved, completing the local trenchless repair.

[0029] As shown in the figure, there are two sets of through-hole jacks 2; each end of the fixed shaft 1 is provided with a fixing block 3; the through-hole jacks 2 are respectively sleeved on the fixed shaft 1, and each through-hole jack 2 is connected to the fixing block 3. The telescopic ends of the two sets of through-hole jacks 2 are arranged opposite each other.

[0030] To achieve the lifting and restoration of the pipeline, through-hole jacks 2 are installed at both ends of the fixed shaft 1. This significantly increases the lifting force and prevents tilting due to unilateral force, providing better support at the original deformed location of the pipeline. Specifically, through-hole jacks 2 are installed at both ends of the fixed shaft 1, with identical hinged extension plates on them. The moving jack blocks 4 move in opposite directions, synchronously pushing the extension plates 6 via connecting rods, resulting in better balance and providing superior support for the original pipeline.

[0031] Specifically, the expansion plate 6 has a groove on its surface for fixing the pipe support steel ring 7.

[0032] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A trenchless repair device for a slightly collapsed and deformed double-walled corrugated pipe, characterized in that, include: A fixed shaft, wherein a fixing block is provided at the end of the fixed shaft; A through-hole jack, wherein there is one or more through-hole jacks, wherein the through-hole jacks are sleeved on the fixed shaft and connected and fixed to the fixed block; the telescopic end of the through-hole jack is provided with a movable top block; the movable top block is hinged to the first end of the connecting rod assembly, and the second end of the connecting rod assembly is connected to the expansion plate; A pipe support steel ring, which is used to be fitted onto the expansion plate; The telescopic end of the through-hole jack drives the movable top block to move along the fixed axis, the movable top block drives the connecting rod assembly to unfold in the radial direction, and the expansion plate expands the pipe support steel ring to form support for the original pipe.

2. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 1, characterized in that: Two sets of through-hole jacks are provided; fixed blocks are provided at both ends of the fixed shaft; The through-hole jacks are respectively sleeved on the fixed shaft, and the through-hole jacks are respectively connected to the fixed block.

3. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 2, characterized in that: The telescopic ends of the two through-hole type jacks are arranged opposite each other.

4. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 1, characterized in that: The fixed shaft includes two or more shaft segments, which are threaded together.

5. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 3, characterized in that: The through-type jack is sleeved on the fixed shaft. The fixed end of the through-type jack is connected to the fixed block by bolts, and the moving end of the through-type jack is connected to the moving block by bolts.

6. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 2, characterized in that: The through-hole jack, the fixed block, and the movable top block are arranged in two sets, symmetrically about the centerline of the fixed axis.

7. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 2, characterized in that: The number of links in the linkage group is five links, and the links are arranged in a circular array. The number of expansion plates is five; The two ends of the connecting rod are respectively hinged to the expansion plate and the movable top block.

8. The trenchless repair device for mildly collapsed and deformed double-walled corrugated pipes according to claim 7, characterized in that: The expansion plate has grooves on its surface for fixing the pipe support steel ring.

9. The trenchless repair device for a slightly collapsed and deformed double-walled corrugated pipe according to claim 1 or 2, characterized in that: The pipe support ring is a unidirectional expansion self-locking stainless steel ring.

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