A trenchless pipe rehabilitation device

Abstract

The application belongs to the technical field of pipeline repair, and more particularly to a trenchless pipeline repair device. The device comprises a spiral winding repair mechanism, a guide, a fixed plate, a resin impregnated tape and an external winding machine. The fixed plate is rotationally connected to the guide, and a torsional spring is fixed between the fixed plate and the guide. One end of the resin impregnated tape is installed on the external winding machine, and the other end of the resin impregnated tape is in extrusion fit with the fixed plate. A backing plate is fixed to the fixed plate. The resin impregnated tape is isolated from impurities on the pipeline by the backing plate, so that the resin impregnated tape is prevented from directly contacting holes on the pipeline, thereby preventing the adjacent two layers of the resin impregnated tape from collapsing when they are aligned and engaged, ensuring the engagement degree of the adjacent two layers of the resin impregnated tape, and preventing gaps from occurring at the lap joints of the resin impregnated tape, which affects the quality of pipeline repair.

Description

Technical Field

[0001] This invention belongs to the field of pipeline repair technology, and more specifically, it is particularly aimed at a trenchless pipeline repair device. Background Technology

[0002] Trenchless pipeline repair devices are equipment used to repair underground pipelines without damaging the ground or surrounding buildings. These include spiral wound pipeline repair devices. Typically, a guide is inserted into the pipeline and spirals along the inner wall. The guide drives the spiral wound tape to wrap around the inner wall of the pipeline layer by layer, with adjacent layers of the tape interlocking through protrusions and grooves to form an overlap. After winding, concrete is poured to fill the gap between the winding layers and the pipeline, thus completing the pipeline repair. However, existing pipelines accumulate significant corrosion and scale over long-term use, reducing their strength and making them prone to developing holes. When the overlap of the spiral wound tape aligns with a hole, the adjacent layers of tape may collapse into the hole under pressure, preventing the protrusions from inserting into the adjacent grooves and affecting the interlocking degree of the two layers, resulting in gaps at the overlap. Summary of the Invention

[0003] In order to overcome the shortcomings pointed out in the background art above, the present invention provides a trenchless pipeline repair device.

[0004] The technical solution of this invention is: a trenchless pipeline repair device, comprising:

[0005] A spiral winding repair mechanism includes a guide, a fixed plate, a resin-impregnated tape, and an external winding machine. The fixed plate is rotatably connected to the guide, and a torsion spring is fixed between the fixed plate and the guide. One end of the resin-impregnated tape is mounted on the external winding machine, and the other end of the resin-impregnated tape is pressed against the fixed plate.

[0006] A pad is fixed to the fixing plate, and the resin-impregnated tape is located between the pad and the fixing plate to prevent the resin-impregnated tape from directly contacting the pipe during installation.

[0007] As a preferred option, it also includes:

[0008] A locking block is fixed to the pad near the adjacent overlap seam of the resin-impregnated strip, and the locking block is engaged with the resin-impregnated strip for limiting and positioning.

[0009] As a preferred option, it also includes:

[0010] Two sliding plates are symmetrically distributed and slidably connected to the pad. An elastic element is fixed between the symmetrically distributed sliding plates. The sliding plates are press-fitted with the resin-impregnated tape.

[0011] As a preferred embodiment, the card block is located between the two sliding plates, and the side of the card block closest to the resin impregnation strip is provided with a protrusion.

[0012] As a preferred option, it also includes:

[0013] A first rotating shaft is rotatably connected inside the pad, and a first rotating disk is fixedly connected to the first rotating shaft;

[0014] Several first extrusion rods are circumferentially slidably connected to the first rotating disk, and an elastic element is fixed between the first extrusion rods and the first rotating disk.

[0015] As a preferred embodiment, the center of the first compression rod and the locking block are located on the same vertical plane.

[0016] As a preferred option, it also includes:

[0017] The second rotating shaft is rotatably connected to the guide, and the second rotating shaft is fixedly connected to the second rotating disk;

[0018] A drive shaft is fixedly connected to the first rotating shaft, and the drive shaft is rotatably connected to the pad. The second rotating shaft and the drive shaft are connected by a transmission component.

[0019] As a preferred option, it also includes:

[0020] The second extrusion rod has the same number as the first extrusion rod and is circumferentially slidably connected to the second rotating disk. An elastic element is fixed between the second extrusion rod and the second rotating disk.

[0021] A flexible plate is fixedly attached to the guide.

[0022] As a preferred embodiment, the first rotating disk is provided with a first chamber, the first rotating shaft is provided with a second chamber communicating with the first chamber, the second rotating disk is provided with a third chamber, and the second rotating shaft is provided with a fourth chamber communicating with the third chamber. The fourth chamber is connected to the second chamber through a conduit. Hydraulic oil is provided in the first chamber, the second chamber, the third chamber, the fourth chamber, and the conduit.

[0023] As a preferred option, it also includes:

[0024] Several sets of first limiting blocks, the number of sets being the same as the number of first extrusion rods, with each set of first limiting blocks fixedly connected to an adjacent first extrusion rod;

[0025] The number of second limiting blocks is the same as the number of first extrusion rods. They are slidably connected inside the first rotating disk. An elastic element is fixed between the second limiting blocks and the first rotating disk. Each set of first limiting blocks is extruded and engaged with the adjacent second limiting block.

[0026] The beneficial effects of the above technical solution are as follows: 1. The present invention isolates the resin impregnated tape from the impurities on the pipe by using a pad, and avoids direct contact between the resin impregnated tape and the holes on the pipe, thereby preventing the collapse of the two adjacent layers of the resin impregnated tape when they are aligned and interlocked, so as to ensure the degree of interlocking of the two adjacent layers of the resin impregnated tape and prevent gaps from forming at the overlap of the resin impregnated tape, which would affect the quality of the pipe repair.

[0027] 2. The resin impregnated tape is limited by the clamping block to ensure that the interlocking points of the two adjacent layers of the resin impregnated tape are always aligned. This prevents the resin impregnated tape from collapsing and causing the two adjacent layers above it to fail to align and interlock, thus avoiding gaps at the overlap of the resin impregnated tape and affecting the quality of pipe repair.

[0028] 3. The first rotating disc drives all the first extrusion rods to rotate. The circumferentially distributed first extrusion rods sequentially extrude the resin impregnated strip, so that the resin impregnated strip is simultaneously extruded by the fixed plate and the first extrusion rods. This increases the mutual extrusion force between adjacent layers on the resin impregnated strip, making the two adjacent layers on the resin impregnated strip more tightly interlocked. This prevents the protrusions inside the pipe from extruding the resin impregnated strip and causing the protrusions to disengage from the slot, thereby avoiding gaps at the overlap of the resin impregnated strip. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the guide of the present invention;

[0031] Figure 3 This is a three-dimensional structural diagram of the fixing plate of the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the pad of the present invention;

[0033] Figure 5 This is a three-dimensional structural diagram of the card block and sliding plate of the present invention;

[0034] Figure 6 This is a three-dimensional structural cross-sectional view of the pad of the present invention;

[0035] Figure 7 This is a three-dimensional structural cross-sectional view of the first rotating shaft of the present invention;

[0036] Figure 8This is a three-dimensional structural diagram of the flexible plate of the present invention;

[0037] Figure 9 This is a three-dimensional structural diagram of the guide and flexible plate of the present invention;

[0038] Figure 10 This is a three-dimensional structural diagram of the second rotating disk of the present invention.

[0039] The markings in the attached diagram are as follows: 1: Spiral winding repair mechanism, 101: Guide, 102: Fixing plate, 103: Resin impregnated tape, 2: Pad, 3: Locking block, 4: Sliding plate, 5: First rotating shaft, 501: First rotating disk, 502: First extrusion rod, 6: Second rotating shaft, 601: Second rotating disk, 602: Drive shaft, 7: Second extrusion rod, 701: Flexible plate, 801: First chamber, 802: Second chamber, 803: Third chamber, 804: Fourth chamber, 9: First limiting block, 901: Second limiting block. Detailed Implementation

[0040] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0041] To address the issue of gaps appearing at the overlap of the spiral wound tape after a pipe rupture aligning with the hole, causing adjacent layers of tape to collapse into the hole under pressure, reducing the stress at the tape's interlocking point and affecting the tightness of the seal, this invention proposes a trenchless pipe repair device. (Refer to...) Figures 1-5 The system includes a spiral winding repair mechanism 1, which comprises a guide 101, a fixing plate 102, a resin-impregnated tape 103, and an external winding machine. The guide 101 is equipped with a control terminal (not shown in the figure). Both the guide 101 and the external winding machine are electrically connected to the control terminal. The fixing plate 102 is rotatably connected to the guide 101. A torsion spring is fixed between the fixing plate 102 and the guide 101, and the torsion spring is initially in a charged state to press the fixing plate 102 against the resin-impregnated tape 103. The left end of the resin-impregnated tape 103 is mounted on the external winding machine, and the right end of the resin-impregnated tape 103 is connected to the fixing plate 101. 02. Extrusion fit: The fixing plate 102 is used to press the resin impregnated tape 103, pressing the protrusions on the resin impregnated tape 103 into the adjacent slots, so that the adjacent two layers of the resin impregnated tape 103 interlock with each other; the pad 2 is fixed to the fixing plate 102, and the resin impregnated tape 103 is located between the pad 2 and the fixing plate 102. It is used to prevent the resin impregnated tape 103 from directly contacting the pipe during laying and to prevent the resin impregnated tape 103 from directly contacting the holes on the pipe, thereby preventing the adjacent two layers of the resin impregnated tape 103 from collapsing when they are aligned and interlocked, so as to ensure the degree of interlocking of the adjacent two layers on the resin impregnated tape 103.

[0042] When this device is needed to repair pipelines, the operator starts the guide 101 and the external winding machine through the control terminal. The guide 101 moves spirally inside the pipeline, driving the resin impregnated tape 103 to move, so that the resin impregnated tape 103 is wound layer by layer inside the pipeline to repair it. The torsion spring of the fixing plate 102 initially stores force, pressing the resin impregnated tape 103 onto the pad plate 2. The pad plate 2 prevents the resin impregnated tape 103 from directly contacting the holes in the pipeline, thereby preventing the collapse of adjacent layers of the resin impregnated tape 103 when they are aligned and interlocked. This ensures the degree of interlocking between adjacent layers of the resin impregnated tape 103 and prevents gaps from forming at the overlap of the resin impregnated tape, which would affect the quality of the pipeline repair.

[0043] If there are impurities such as rust on the inner wall of the pipe, the pad 2 can be used to prevent the resin impregnated tape 103 from being directly pressed onto the inner wall of the pipe by the fixing plate 102, thereby preventing the resin impregnated tape 103 from being torn by impurities on the inner wall of the pipe during the laying process, and ensuring the strength of the resin impregnated tape 103.

[0044] After the resin-impregnated tape 103 is wrapped, the operator shuts down the guide 101 and the external wrapping machine through the control terminal, and then pours concrete into the gap between the pipe and the resin-impregnated tape 103. After the concrete solidifies, the inside of the pipe is cleaned to complete the pipe repair.

[0045] To ensure alignment of the interlocking points of adjacent layers of the wrapping tape, refer to... Figure 4 and Figure 5 The present invention also includes: a locking block 3, which is fixed to the pad 2 near the adjacent overlap seam of the resin impregnated tape 103. The locking block 3 is engaged with the resin impregnated tape 103 for limiting the resin impregnated tape 103 to prevent the groove of the resin impregnated tape 103 from moving and causing the adjacent protrusion to be unable to be inserted.

[0046] To reduce the difficulty of joining adjacent layers of the wrapping tape at the interlocking point, refer to Figure 4 and Figure 5 The invention further includes: two sliding plates 4, symmetrically distributed on the left and right, slidably connected to the pad 2, with an elastic element fixed between the symmetrically distributed sliding plates 4, wherein the elastic element is a tension spring, the sliding plates 4 are press-fitted with the resin impregnated strip 103, and each of the two sliding plates 4 has an inclined surface on its opposite sides, and so on. Figure 4From the front view, the distance between the inclined surfaces of the two sliding plates 4 gradually decreases from bottom to top. During movement, the guide 101 moves the pad 2 via the fixed plate 102, which in turn moves the two sliding plates 4. The inclined surfaces of the sliding plates 4 move along the resin impregnating belt 103. Both sliding plates 4 are engaged with the resin impregnating belt 103, which is located on the left and right sides of adjacent slots. At this time, the elastic element between the two sliding plates 4 is in a stored state. The two sliding plates 4 gradually apply pressure to the left and right sides of the resin impregnating belt 103 near the slots, causing the resin... The left and right sides of the groove of the resin impregnated tape 103 bend towards the pad 2, and the groove of the resin impregnated tape 103 expands to facilitate the insertion of adjacent protrusions on the resin impregnated tape 103. The locking block 3 is located between the two sliding plates 4, and the locking block 3 has a protrusion on the side near the resin impregnated tape 103. When the left and right sides of the interlocking part of the resin impregnated tape 103 bend backward, the protrusion of the locking block 3 presses against the interlocking part of the resin impregnated tape 103, so that the interlocking part of the resin impregnated tape 103 opens and protrudes away from the pad 2, so as to facilitate the interlocking of the two adjacent layers on the resin impregnated tape 103.

[0047] To continuously compress the protrusions and slots of the winding tape, thereby causing the slots and protrusions to engage with each other, refer to... Figures 5-7 It also includes: a first rotating shaft 5, rotatably connected to the pad 2, and a first rotating disk 501 fixedly connected to the first rotating shaft 5; a plurality of first extrusion rods 502, circumferentially slidably connected to the first rotating disk 501, and an elastic element fixedly connected between the first extrusion rods 502 and the first rotating disk 501, wherein the elastic element is a tension spring, the center of the first extrusion rod 502 and the locking block 3 are located on the same vertical plane, used to extrude the resin impregnated tape 103, and the fixing plate 102 also extrudes the resin impregnated tape 103, thereby increasing the mutual extrusion force between adjacent layers on the resin impregnated tape 103, making the adjacent layers on the resin impregnated tape 103 more tightly interlocked, and preventing gaps from appearing at the overlap of the resin impregnated tape 103.

[0048] The following structure is configured to drive the first rotating shaft 5 to rotate, as shown in the reference. Figure 6 and Figures 8-10 It also includes: a second rotating shaft 6, rotatably connected to the guide 101, and a second rotating disk 601 fixedly connected to the second rotating shaft 6; a transmission shaft 602, fixedly connected to the first rotating shaft 5, and rotatably connected to the pad 2. The second rotating shaft 6 and the transmission shaft 602 are connected by a transmission component, wherein the transmission component includes two pulleys and a transmission belt, one pulley is fixedly connected to the second rotating shaft 6, and the other pulley is fixedly connected to the transmission shaft 602.

[0049] To accommodate the protrusions on the inner wall of the pipe and prevent the guide from wobbling at these protrusions, refer to... Figures 6-10It also includes: a second extrusion rod 7, the same number as the first extrusion rod 502, which is circumferentially slidably connected to the second rotating disk 601. An elastic element, which is a spring, is fixed between the second extrusion rod 7 and the second rotating disk 601. The second extrusion rod 7 presses against the inner wall of the pipe, and the rotation of the circumferentially distributed second extrusion rod 7 drives the second rotating disk 601 to rotate. A flexible plate 701 is fixed to the guide 101. When a protrusion appears in the pipe, the flexible plate 701 is deformed under pressure to prevent the guide 101 from shaking when passing through the protrusion, thereby avoiding shaking of the resin impregnated tape 103 during the laying process, and ensuring that the interlocking parts of the resin impregnated tape 103 are stably fitted when interlocking. The first rotating disk 501 is provided with a first cavity. The first rotating shaft 5 has a second chamber 802 connected to the first chamber 801. The second rotating disk 601 has a third chamber 803 connected to the second rotating shaft 6. The second rotating shaft 6 has a fourth chamber 804 connected to the third chamber 803. The first extrusion rod 502 slides in the first chamber 801, and the second extrusion rod 7 slides in the third chamber 803. The fourth chamber 804 is connected to the second chamber 802 via a conduit. Hydraulic oil is provided in the first chamber 801, the second chamber 802, the third chamber 803, the fourth chamber 804, and the conduit. The two ends of the conduit are rotatably connected to the first rotating shaft 5 and the second rotating shaft 6, respectively, to prevent the conduit from getting tangled during the rotation of the first rotating shaft 5 and the second rotating shaft 6, which would affect the normal use of the conduit.

[0050] To prolong the extension time of the first extrusion rod 502, ensuring that the extension time of the first extrusion rod 502 is sufficient for the resin impregnated tape 103 to pass through the pitted area within the pipe, refer to... Figure 7 It also includes: several sets of first limiting blocks 9, the number of sets being the same as the number of first extrusion rods 502, each set of first limiting blocks 9 being linearly distributed and fixed to adjacent first extrusion rods 502; second limiting blocks 901, the number of which is the same as the number of first extrusion rods 502, slidably connected within the first rotating disk 501, with inclined surfaces on both sides of the first limiting blocks 9 and the second limiting blocks 901 also having inclined surfaces on both sides, and an elastic element, which is a spring, being fixed between the second limiting blocks 901 and the first rotating disk 501, wherein each set of first limiting blocks 9 is in compression engagement with the adjacent second limiting blocks 901, and when each set of first limiting blocks 9 moves, the second limiting blocks 901 block the adjacent first limiting blocks 9 to slow down the moving speed of the first limiting blocks 9.

[0051] During the laying of the resin impregnated tape 103, the circumferentially distributed second extrusion rods 7 simultaneously drive the second rotating disk 601 to rotate. The second rotating disk 601 drives the second rotating shaft 6 to rotate. The second rotating shaft 6 drives the transmission shaft 602 to rotate through the transmission component. The transmission shaft 602 drives the first rotating disk 501 to rotate through the first rotating shaft 5. The first rotating disk 501 drives all the first extrusion rods 502 to rotate. The circumferentially distributed first extrusion rods 502 sequentially extrude the resin impregnated tape 103, so that the resin impregnated tape 103 is simultaneously extruded by the fixing plate 102 and the first extrusion rods 502. This increases the mutual extrusion force between adjacent layers on the resin impregnated tape 103, making the adjacent layers on the resin impregnated tape 103 more tightly interlocked and preventing gaps from appearing at the overlap of the resin impregnated tape 103.

[0052] During the laying of the resin impregnated tape 103, if there are protrusions such as rust on the inner wall of the pipe, the flexible plate 701 will deform under the pressure of the protrusions on the pipe. At the same time, the second extrusion rod 7 will be compressed and contracted. The elastic element of the second extrusion rod 7 will contract and the second extrusion rod 7 will squeeze the hydraulic oil in the third chamber 803 into the fourth chamber 804. The hydraulic oil in the fourth chamber 804 will be squeezed into the second chamber 802 through the conduit. Then the hydraulic oil will be pressed into the first chamber 801, so that all the first extrusion rods 502 will extend outwards, increasing the force of the first extrusion rods 502 squeezing the resin impregnated tape 103. This will strengthen the connection strength between the protrusions and the grooves on the resin impregnated tape 103 at the protrusions on the inner wall of the pipe, and prevent the protrusions from squeezing the resin impregnated tape 103, which would cause the protrusions to detach from the grooves and thus affect the quality of pipe repair (the existing guide 101 will move away from the inner wall of the pipe when a protrusion occurs, which will reduce the squeezing force of the fixed plate 102 on the resin impregnated tape 103).

[0053] When the guide 101 moves away from the pitting area on the inner wall of the pipe, the elastic element of the second extrusion rod 7 causes it to reset, and the elastic element of the first extrusion rod 502 also causes it to reset. However, at this time, the first extrusion rod 502 will cause the adjacent set of first limit blocks 9 to reset. The same set of first limit blocks 9 sequentially press the second limit block 901 to reset. The elastic element of the second limit block 901 is compressed, causing the adjacent set of first limit blocks 9 to move through, buffering the reset of the first limit block 9, and prolonging the extension time of the first extrusion rod 502 to ensure that the extension time of the first extrusion rod 502 is sufficient for the resin impregnated tape 103 to pass through the pitting area in the pipe.

[0054] After the resin-impregnated tape 103 is wrapped, concrete is poured into the gap between the pipe and the resin-impregnated tape 103. After the concrete has solidified, the inside of the pipe is cleaned to complete the pipe repair.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A trenchless pipeline repair device, characterized in that, include: A spiral winding repair mechanism (1) includes a guide (101), a fixing plate (102), a resin-impregnated tape (103), and an external winding machine. The fixing plate (102) is rotatably connected to the guide (101). A torsion spring is fixed between the fixing plate (102) and the guide (101). One end of the resin-impregnated tape (103) is mounted on the external winding machine, and the other end of the resin-impregnated tape (103) is pressed against the fixing plate (102). The pad (2) is fixed to the fixing plate (102), and the resin impregnated tape (103) is located between the pad (2) and the fixing plate (102) to prevent the resin impregnated tape (103) from directly contacting the pipe during laying. Also includes: The locking block (3) is fixed to the pad (2) near the adjacent overlap seam of the resin impregnated strip (103), and the locking block (3) is in a limiting fit with the resin impregnated strip (103); Also includes: Two sliding plates (4) are symmetrically distributed and slidably connected to the pad (2). An elastic element is fixed between the symmetrically distributed sliding plates (4). The sliding plates (4) are pressed together with the resin impregnated strip (103). Also includes: The first rotating shaft (5) is rotatably connected to the pad (2), and the first rotating shaft (5) is fixedly connected to the first rotating disk (501). A plurality of first extrusion rods (502) are circumferentially slidably connected to the first rotating disk (501), and an elastic element is fixedly connected between the first extrusion rods (502) and the first rotating disk (501); The center of the first compression rod (502) and the locking block (3) are located on the same vertical plane; Also includes: The second rotating shaft (6) is rotatably connected to the guide (101), and the second rotating shaft (6) is fixedly connected to the second rotating disk (601). The drive shaft (602) is fixedly connected to the first rotating shaft (5), and the drive shaft (602) is rotatably connected to the pad (2). The second rotating shaft (6) and the drive shaft (602) are connected by a transmission component. Also includes: The second extrusion rod (7) has the same number as the first extrusion rod (502) and is circumferentially slidably connected to the second rotating disk (601). An elastic element is fixed between the second extrusion rod (7) and the second rotating disk (601). The second extrusion rod (7) presses against the inner wall of the pipe; The flexible plate (701) is fixedly attached to the guide (101); The first rotating disk (501) is provided with a first chamber (801), the first rotating shaft (5) is provided with a second chamber (802) communicating with the first chamber (801), the second rotating disk (601) is provided with a third chamber (803), the second rotating shaft (6) is provided with a fourth chamber (804) communicating with the third chamber (803), the fourth chamber (804) and the second chamber (802) are connected by a conduit, and hydraulic oil is provided in the first chamber (801), the second chamber (802), the third chamber (803), the fourth chamber (804) and the conduit.

2. The trenchless pipeline repair device according to claim 1, characterized in that, The card block (3) is located between the two sliding plates (4), and the card block (3) has a protrusion on the side near the resin impregnation strip (103).

3. The trenchless pipeline repair device according to claim 2, characterized in that, Also includes: Several sets of first limiting blocks (9) are provided, the number of sets being the same as the number of first extrusion rods (502), and each set of first limiting blocks (9) is fixedly connected to the adjacent first extrusion rods (502); The number of second limiting blocks (901) is the same as the number of first extrusion rods (502), and they are slidably connected in the first rotating disk (501). An elastic element is fixed between the second limiting blocks (901) and the first rotating disk (501). Each set of first limiting blocks (9) is extruded and engaged with the adjacent second limiting blocks (901).

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