Non-excavation type pipeline repairing device

Abstract

The invention belongs to the technical field of pipeline repairing, and particularly relates to a trenchless pipeline repairing device. Comprising a spiral winding repairing mechanism, the spiral winding repairing mechanism comprises a guider, a fixing plate, a resin dipping belt and an external winding machine, the fixing plate is rotationally connected to the guider, a torsional spring is fixedly connected between the fixing plate and the guider, one end of the resin dipping belt is installed on the external winding machine, and the other end of the resin dipping belt is installed on the external winding machine; the other end of the resin dipping belt is in extrusion fit with the fixing plate; and the base plate is fixedly connected to the fixed plate. Contact between the resin dipping belt and impurities on the pipeline is isolated through the base plate, direct contact between the resin dipping belt and holes in the pipeline is avoided, and therefore collapse generated when two adjacent layers of the resin dipping belt are aligned and engaged is prevented, the engagement degree of the two adjacent layers of the resin dipping belt is guaranteed, and the service life of the resin dipping belt is prolonged. And a gap is prevented from being generated at the lap joint of the resin dipping belt, and the influence on the pipeline repairing quality is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline repair, and more specifically, is particularly directed to a trenchless pipeline repair device. Background Art

[0002] A trenchless pipeline repair device is a device for repairing underground pipelines without damaging the ground or surrounding buildings, including a winding pipeline repair device. Generally, a guide is placed in the pipeline and spirally moved along the inner wall of the pipeline. The guide drives the winding belt to be wound around the inner wall of the pipeline layer by layer, and the two adjacent layers of the winding belt are respectively plugged into each other through the protrusions and the slots to form a lap joint. When the winding is completed, the gap between the winding layer and the pipeline is poured with concrete to complete the pipeline repair. A large amount of corrosion and scaling will be generated on the inner wall of the existing pipeline during long-term use, thereby reducing the strength of the pipeline, which can easily cause damaged holes to appear on the pipeline. When the lap joint of the winding belt is aligned with the damaged hole, the adjacent two layers of the winding belt will collapse into the hole when they are pressed and bitten against each other, causing the protrusions of the winding belt to be unable to be inserted into the adjacent slots, affecting the degree of biting of the two layers of the winding belt, and then causing gaps at the lap joints of the winding belt. Summary of the invention

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

[0004] The technical solution of the present invention is: a trenchless pipeline repair device, comprising: A spiral winding repair mechanism, the spiral winding repair mechanism comprising a guide, a fixing plate, a resin impregnated belt and an external winding machine, the fixing plate being rotatably connected to the guide, a torsion spring being fixedly connected between the fixing plate and the guide, one end of the resin impregnated belt being mounted on the external winding machine, and the other end of the resin impregnated belt being extruded and matched with the fixing plate; A backing plate is fixedly connected to the fixing plate, and the resin impregnated belt is located between the backing plate and the fixing plate, so as to prevent the resin impregnated belt from directly contacting the pipeline during laying.

[0005] As a preferred embodiment, it also includes: The clamping block is fixedly connected to the pad near the adjacent overlapping seams on the resin-impregnated belt, and the clamping block is limitedly matched with the resin-impregnated belt.

[0006] As a preferred embodiment, it also includes: The sliding plates are provided with two plates which are symmetrically distributed and are slidably connected to the pad. An elastic member is fixed between the symmetrically distributed sliding plates. The sliding plates are extrusion-matched with the resin-impregnated belt.

[0007] As a preference, the clamping block is located between the two sliding plates, and a protrusion is provided on a side of the clamping block close to the resin-impregnated belt.

[0008] As a preferred embodiment, it also includes: A first rotating shaft, rotatably connected to the backing plate, wherein the first rotating shaft is fixedly connected to a first rotating disk; A plurality of first extrusion rods are circumferentially slidably connected to the first rotating disk, and an elastic member is fixedly connected between the first extrusion rods and the first rotating disk.

[0009] As a preference, the center of the first extrusion rod and the clamping block are located on the same vertical plane.

[0010] As a preferred embodiment, it also includes: A second rotating shaft, rotatably connected to the guide, wherein the second rotating shaft is fixedly connected to a second rotating disk; A transmission shaft is fixedly connected to the first rotating shaft, the transmission shaft is rotationally connected to the backing plate, and the second rotating shaft and the transmission shaft are transmitted via a transmission member.

[0011] As a preferred embodiment, it also includes: The number of second extrusion rods is the same as that of the first extrusion rods, and the second extrusion rods are connected to the second rotating disk in a circumferentially sliding manner, and an elastic member is fixedly connected between the second extrusion rods and the second rotating disk; The flexible plate is fixedly connected to the guide.

[0012] Preferably, a first chamber is provided in the first rotating disk, a second chamber connected to the first chamber is provided in the first rotating shaft, a third chamber is provided in the second rotating disk, a fourth chamber connected to the third chamber is provided in the second rotating shaft, the fourth chamber is connected to the second chamber via a conduit, and hydraulic oil is provided in the first chamber, the second chamber, the third chamber, the fourth chamber and the conduit.

[0013] As a preferred embodiment, it also includes: A plurality of groups of first limit blocks, the number of which is the same as the number of the first extrusion rods, and each group of the first limit blocks is respectively fixedly connected to adjacent first extrusion rods; The second limit blocks, the number of which is the same as the number of the first extrusion rods, are slidably connected to the first rotating disk, an elastic member is fixed between the second limit blocks and the first rotating disk, and each group of the first limit blocks is respectively extruded and matched with adjacent second limit blocks.

[0014] The beneficial effects of the above technical solution are as follows: 1. The present invention isolates the contact between the resin-impregnated tape and impurities on the pipeline through the pad, thereby preventing the resin-impregnated tape from directly contacting the holes on the pipeline, thereby preventing the adjacent two layers of the resin-impregnated tape from collapsing when they are aligned and bitten with each other, thereby ensuring the biting degree of the adjacent two layers on the resin-impregnated tape, and preventing the formation of gaps at the overlap seams of the resin-impregnated tape, which affects the quality of pipeline repair; 2. The resin impregnated belt is limited by the block to ensure that the bite of the two adjacent layers of the resin impregnated belt is always aligned, so that the material of the resin impregnated belt is soft and collapsed, resulting in the inability of the two adjacent layers on it to align and bite, thereby avoiding the appearance of gaps at the overlap of the resin impregnated belt, which affects the quality of pipeline repair; 3. All the first extrusion rods are driven to rotate by the first rotating disk, and the circumferentially distributed first extrusion rods squeeze the resin impregnated belt in turn, so that the resin impregnated belt is squeezed by the fixed plate and the first extrusion rods at the same time, increasing the force of mutual squeezing of the two adjacent layers on the resin impregnated belt, making the two adjacent layers on the resin impregnated belt bite more tightly, thereby preventing the bulge inside the pipe from squeezing the resin impregnated belt and causing the bulge to fall out of the slot, thereby avoiding the appearance of gaps at the overlap seams of the resin impregnated belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the guide of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the pad of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping block and the sliding plate of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the pad of the present invention; Figure 7 It is a three-dimensional structural cross-sectional view of the first rotating shaft of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the flexible board of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the guide and the flexible plate of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the second rotating disk of the present invention.

[0016] Markings in the accompanying drawings: 1: spiral winding repair mechanism, 101: guide, 102: fixed plate, 103: resin impregnated belt, 2: pad, 3: 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: transmission shaft, 7: second extrusion rod, 701: flexible plate, 801: first chamber, 802: second chamber, 803: third chamber, 804: fourth chamber, 9: first limit block, 901: second limit block. DETAILED DESCRIPTION

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0018] In order to solve the problem that the holes generated after the damage in the pipeline are aligned with the lap joints of the wrapping tape, causing the adjacent two layers of wrapping tape to collapse into the holes when they are pressed and bitten by each other, resulting in reduced force at the biting point of the wrapping tape, affecting the biting degree of the two layers of wrapping tape, thereby causing gaps at the lap joints of the wrapping tape, the present invention proposes a non-excavation pipeline repair device, referring to Figure 1-Figure 5 , including: a spiral winding repair mechanism 1, the spiral winding repair mechanism 1 includes a guide 101, a fixed plate 102, a resin impregnated belt 103 and an external winding machine, the guide 101 is provided with a control terminal not shown in the figure, the guide 101 and the external winding machine are both electrically connected to the control terminal, the fixed plate 102 is rotatably connected to the guide 101, a torsion spring is fixedly connected between the fixed plate 102 and the guide 101, and the torsion spring is initially in a power storage state, which is used to make the fixed plate 102 press the resin impregnated belt 103, the left end of the resin impregnated belt 103 is installed on the external winding machine, and the right end of the resin impregnated belt 103 is connected to the fixed plate 1 02 extrusion fit, the fixed plate 102 is used to press the resin-impregnated tape 103, press the protrusions on the resin-impregnated tape 103 into the adjacent slots, so that the two adjacent layers of the resin-impregnated tape 103 are interlocked with each other; the pad 2 is fixed to the fixed plate 102, and the resin-impregnated tape 103 is located between the pad 2 and the fixed plate 102, which is used to prevent the resin-impregnated tape 103 from directly contacting the pipeline during laying, and to prevent the resin-impregnated tape 103 from directly contacting the holes on the pipeline, thereby preventing the two adjacent layers of the resin-impregnated tape 103 from collapsing when they are aligned and interlocked with each other, so as to ensure the degree of interlocking of the two adjacent layers on the resin-impregnated tape 103.

[0019] When it is necessary to use the device to repair the pipeline, the operator turns on the guide 101 and the external winding machine through the control terminal, and the guide 101 spirals in the pipeline. The guide 101 drives the resin impregnated belt 103 to move, so that the resin impregnated belt 103 is wound in the pipeline layer by layer to repair the pipeline. The torsion spring of the fixed plate 102 initially accumulates force and presses the resin impregnated belt 103 onto the pad 2. The pad 2 prevents the resin impregnated belt 103 from directly contacting the holes on the pipeline, thereby preventing the adjacent two layers of the resin impregnated belt 103 from collapsing when they are aligned and bitten with each other, so as to ensure the biting degree of the adjacent two layers on the resin impregnated belt 103 and prevent gaps from forming at the lap joints of the resin impregnated belt, which affects the quality of pipeline repair.

[0020] If there are impurities such as rust on the inner wall of the pipeline, the pad 2 can be used to prevent the resin-impregnated tape 103 from being directly pressed against the inner wall of the pipeline by the fixing plate 102, thereby preventing the resin-impregnated tape 103 from being scratched by impurities on the inner wall of the pipeline during laying, thereby ensuring the strength of the resin-impregnated tape 103.

[0021] When the resin-impregnated tape 103 is wound, the operator closes the guide 101 and the external winding 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.

[0022] To ensure that the two adjacent layers of the wrapping tape are aligned, refer to Figure 4 and Figure 5 The present invention also includes: a block 3, which is fixed to the pad 2 near the adjacent lap joint on the resin-impregnated belt 103. The block 3 is limited and cooperates with the resin-impregnated belt 103. The block 3 is used to limit the resin-impregnated belt 103 to prevent the card slot of the resin-impregnated belt 103 from moving and causing the adjacent protrusion to be unable to be inserted.

[0023] In order to reduce the difficulty of butt joint between two adjacent layers of the wrapping tape, refer to Figure 4 and Figure 5 The present invention also includes: two sliding plates 4, which are symmetrically distributed on the left and right, and are slidably connected to the pad 2. An elastic member is fixed between the symmetrically distributed sliding plates 4, wherein the elastic member is a tension spring. The sliding plates 4 are pressed and matched with the resin impregnated belt 103. The opposite sides of the two sliding plates 4 are provided with inclined surfaces, and the elastic member is fixed to the pad 2. Figure 4From the front view, the distance between the inclined surfaces of the two sliding plates 4 gradually decreases from bottom to top. During the movement, the guide 101 drives the pad 2 to move through the fixed plate 102, and the pad 2 drives the two sliding plates 4 to move. The inclined surfaces of the sliding plates 4 move along the resin impregnated belt 103. The two sliding plates 4 are both stuck on the resin impregnated belt 103, and the two resin impregnated belts 103 are respectively located on the left and right sides of the adjacent card slots. At this time, the elastic member between the two sliding plates 4 is in a force storage state, and the two sliding plates 4 gradually apply pressure to the left and right sides of the resin impregnated belt 103 near the card slot position, so that the resin impregnated belt 103 is pressed. The left and right sides of the slot of the resin-impregnated belt 103 are bent toward the direction of the pad 2, and the slot of the resin-impregnated belt 103 is expanded to facilitate the insertion of adjacent protrusions on the resin-impregnated belt 103. The block 3 is located between the two sliding plates 4, and a protrusion is provided on the side of the block 3 close to the resin-impregnated belt 103. When the left and right sides of the bite of the resin-impregnated belt 103 are bent backward, the protrusion of the block 3 supports the bite of the resin-impregnated belt 103, so that the bite of the resin-impregnated belt 103 opens and protrudes away from the pad 2, so as to facilitate the mutual bite of the two adjacent layers on the resin-impregnated belt 103.

[0024] In order to continuously squeeze the bump and the slot of the winding belt so that the slot and the bump engage with each other, refer to Figure 5-Figure 7 , also includes: a first rotating shaft 5, which 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, which are circumferentially slidably connected to the first rotating disk 501, and an elastic member is fixedly connected between the first extrusion rod 502 and the first rotating disk 501, wherein the elastic member is a tension spring, and the center of the first extrusion rod 502 and the block 3 are located on the same vertical plane, which are used to extrude the resin impregnated belt 103, and the fixed plate 102 also extrude the resin impregnated belt 103, thereby increasing the force of mutual extrusion between the two adjacent layers on the resin impregnated belt 103, making the two adjacent layers on the resin impregnated belt 103 bite more tightly, and preventing gaps from appearing at the overlap seams of the resin impregnated belt 103.

[0025] The following structure is set to drive the first rotating shaft 5 to rotate, referring to Figure 6 and Figure 8-Figure 10 , also includes: a second rotating shaft 6, rotatably connected to the guide 101, and the second rotating shaft 6 is fixedly connected to the second rotating disk 601; a transmission shaft 602, fixedly connected to the first rotating shaft 5, the transmission shaft 602 is rotatably connected to the pad 2, and the second rotating shaft 6 and the transmission shaft 602 are transmitted through a transmission member, wherein the transmission member 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.

[0026] In order to adapt to the bulge of the inner wall of the pipe and prevent the guide from shaking at the bulge of the inner wall of the pipe, refer to Figure 6-Figure 10, further comprising: second extrusion rods 7, the number of which is the same as the number of the first extrusion rods 502, and which are circumferentially slidably connected to the second rotating disk 601, an elastic member fixedly connected between the second extrusion rods 7 and the second rotating disk 601, wherein the elastic member is a spring, the second extrusion rods 7 and the inner wall of the pipe are mutually squeezed, and the second rotating disk 601 is driven to rotate when the circumferentially distributed second extrusion rods 7 rotate; a flexible plate 701, fixedly connected to the guide 101, when a protrusion appears in the pipe, the flexible plate 701 is compressed and deformed to prevent the guide 101 from shaking when passing through the protrusion, thereby preventing the resin-impregnated belt 103 from shaking during the laying process, so as to ensure that the bite of the resin-impregnated belt 103 is stably fitted when biting, and a first cavity is provided in the first rotating disk 501 Chamber 801, a second chamber 802 communicating with the first chamber 801 is arranged in the first rotating shaft 5, a third chamber 803 is arranged in the second rotating disk 601, a fourth chamber 804 communicating with the third chamber 803 is arranged in the second rotating shaft 6, the first extrusion rod 502 slides in the first chamber 801, the second extrusion rod 7 slides in the third chamber 803, the fourth chamber 804 is communicated with the second chamber 802 through a conduit, hydraulic oil is arranged in the first chamber 801, the second chamber 802, the third chamber 803, the fourth chamber 804 and the conduit, and both 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 being entangled in the first rotating shaft 5 and the second rotating shaft 6 during rotation, thereby affecting the normal use of the conduit.

[0027] In order to extend the time for which the first extrusion rod 502 is extended to ensure that the time for which the first extrusion rod 502 is extended is sufficient to allow the resin-impregnated tape 103 to pass through the pitting area in the pipeline, refer to Figure 7 , also includes: several groups of first limit blocks 9, the number of groups is the same as the number of first extrusion rods 502, each group of first limit blocks 9 is respectively distributed in a straight line and fixedly connected to adjacent first extrusion rods 502; second limit blocks 901, the number of which is the same as the number of first extrusion rods 502, are slidably connected to the first rotating disk 501, both sides of the first limit blocks 9 are provided with inclined surfaces, and both sides of the second limit blocks 901 are also provided with inclined surfaces, and an elastic member is fixedly connected between the second limit blocks 901 and the first rotating disk 501, wherein the elastic member is a spring, each group of first limit blocks 9 is respectively squeezed and matched with adjacent second limit blocks 901, and when each group of first limit blocks 9 moves, the second limit blocks 901 block the adjacent first limit blocks 9 to slow down the moving speed of the first limit blocks 9.

[0028] During the laying process 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 member, 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, and the circumferentially distributed first extrusion rods 502 squeeze the resin-impregnated tape 103 in turn, so that the resin-impregnated tape 103 is squeezed by the fixed plate 102 and the first extrusion rods 502 at the same time, increasing the force of mutual squeezing between the two adjacent layers on the resin-impregnated tape 103, making the two adjacent layers on the resin-impregnated tape 103 bite more tightly, and preventing gaps from appearing at the overlap seams of the resin-impregnated tape 103.

[0029] During the laying process of the resin impregnated tape 103, if there are protrusions such as rust on the inner wall of the pipeline, the flexible plate 701 is squeezed and deformed by the protrusion on the pipeline, and at the same time, the second extrusion rod 7 is compressed and contracted, and the elastic member of the second extrusion rod 7 contracts. The second extrusion rod 7 squeezes the hydraulic oil in the third chamber 803 into the fourth chamber 804, and the hydraulic oil in the fourth chamber 804 is squeezed into the second chamber 802 through the conduit, and then the hydraulic oil is pressed into the first chamber 801, so that all the first extrusion rods 502 extend outward respectively, increasing the force of the first extrusion rods 502 to squeeze the resin impregnated tape 103, so as to strengthen the connection strength between the protrusion and the card slot on the resin impregnated tape 103 at the protrusion on the inner wall of the pipeline, and prevent the resin impregnated tape 103 from being squeezed at the protrusion, thereby causing the protrusion to detach from the card slot, thereby affecting the quality of pipeline repair (the existing guide 101 will move away from the inner wall of the pipeline when a protrusion occurs on the inner wall of the pipeline, resulting in a reduction in the squeezing force of the fixed plate 102 on the resin impregnated tape 103).

[0030] When the guide 101 moves to a place away from the pitting area on the inner wall of the pipeline, the elastic part of the second extrusion rod 7 drives it to reset, and the elastic part of the first extrusion rod 502 also drives it to reset. However, at this time, the first extrusion rod 502 drives an adjacent group of first limit blocks 9 to reset, and the same group of first limit blocks 9 squeeze the second limit block 901 to reset in turn. The elastic part of the second limit block 901 is compressed to make an adjacent group of first limit blocks 9 move through, buffering the reset of the first limit block 9 and extending the extension time of the first extrusion rod 502 to ensure that the extension time of the first extrusion rod 502 is sufficient to allow the resin-impregnated belt 103 to pass through the pitting area in the pipeline.

[0031] After the resin impregnated tape 103 is wound, concrete is poured 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.

[0032] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A trenchless pipeline repair device, characterized in that: include: A spiral winding repair mechanism (1), the spiral winding repair mechanism (1) comprising a guide (101), a fixing plate (102), a resin impregnated belt (103) and an external winding machine, the fixing plate (102) being rotatably connected to the guide (101), a torsion spring being fixedly connected between the fixing plate (102) and the guide (101), one end of the resin impregnated belt (103) being mounted on the external winding machine, and the other end of the resin impregnated belt (103) being extrusion-fitted with the fixing plate (102); The backing plate (2) is fixedly connected to the fixing plate (102), and the resin-impregnated belt (103) is located between the backing plate (2) and the fixing plate (102), so as to prevent the resin-impregnated belt (103) from directly contacting the pipeline during laying.

2. A trenchless pipeline repair device according to claim 1, characterized in that: Also includes: The clamping block (3) is fixedly connected to the adjacent overlapping seams on the backing plate (2) close to the resin-impregnated belt (103), and the clamping block (3) and the resin-impregnated belt (103) are limitedly matched.

3. A trenchless pipeline repair device according to claim 2, characterized in that: Also includes: The sliding plates (4) have two and are symmetrically distributed, and are slidably connected to the pad (2); an elastic member is fixed between the symmetrically distributed sliding plates (4); and the sliding plates (4) are extrusion-fitted with the resin-impregnated belt (103).

4. A trenchless pipeline repair device according to claim 3, characterized in that: The clamping block (3) is located between the two sliding plates (4), and a protrusion is provided on a side of the clamping block (3) close to the resin impregnated belt (103).

5. The trenchless pipeline repair device according to claim 3, characterized in that: Also includes: A first rotating shaft (5) is rotatably connected to the pad (2), and the first rotating shaft (5) is fixedly connected to a first rotating disk (501); A plurality of first extrusion rods (502) are circumferentially slidably connected to the first rotating disk (501); an elastic member is fixedly connected between the first extrusion rods (502) and the first rotating disk (501).

6. The trenchless pipeline repair device according to claim 5, characterized in that: The center of the first extrusion rod (502) and the clamping block (3) are located on the same vertical plane.

7. The trenchless pipeline repair device according to claim 5, characterized in that: Also includes: A second rotating shaft (6) is rotatably connected to the guide (101), and the second rotating shaft (6) is fixedly connected to a second rotating disk (601); A transmission shaft (602) is fixedly connected to the first rotating shaft (5); the transmission shaft (602) is rotationally connected to the pad (2); and transmission is performed between the second rotating shaft (6) and the transmission shaft (602) via a transmission member.

8. The trenchless pipeline repair device according to claim 7, characterized in that: Also includes: The number of second extrusion rods (7) is the same as that of the first extrusion rods (502), and they are circumferentially slidably connected to the second rotating disk (601), and an elastic member is fixedly connected between the second extrusion rods (7) and the second rotating disk (601); The flexible plate (701) is fixedly connected to the guide (101).

9. The trenchless pipeline repair device according to claim 8, characterized in that: A first chamber (801) is arranged in the first rotating disk (501), a second chamber (802) communicating with the first chamber (801) is arranged in the first rotating shaft (5), a third chamber (803) is arranged in the second rotating disk (601), a fourth chamber (804) communicating with the third chamber (803) is arranged in the second rotating shaft (6), the fourth chamber (804) communicating with the second chamber (802) is communicated with via a conduit, and hydraulic oil is arranged in the first chamber (801), the second chamber (802), the third chamber (803), the fourth chamber (804) and the conduit.

10. The trenchless pipeline repair device according to claim 8, characterized in that: Also includes: A plurality of groups of first limit blocks (9), the number of the groups being the same as the number of the first extrusion rods (502), each group of the first limit blocks (9) being respectively fixedly connected to adjacent first extrusion rods (502); The number of the second limit blocks (901) is the same as the number of the first extrusion rods (502), and they are slidably connected in the first rotating disk (501). An elastic member is fixedly connected between the second limit blocks (901) and the first rotating disk (501), and each group of the first limit blocks (9) is respectively extruded and matched with adjacent second limit blocks (901).

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