Jack for pipeline repair

Abstract

The utility model relates to the technical field of pipeline repair engineering, and discloses a jack for pipeline repair, which comprises a CCTV robot, a monitor transmission port is arranged outside the CCTV robot, the front end outside the CCTV robot is fixedly connected with a telescopic device, the output end of the telescopic device is fixedly connected with a push rod, and the output end of the push rod is fixedly connected with a hydraulic cylinder. And a limiting mechanism is arranged outside the telescopic device, a repairing mechanism is arranged at the other end of the push rod and comprises a rotating motor, the interior of the rotating motor is installed outside the push rod, the exterior of the rotating motor is in threaded connection with a connecting piece, and the interior of the connecting piece is in threaded connection with a fixing bolt. According to the pipeline repairing device, the repairing mechanism is connected with the CCTV robot, so that the jack is quickly conveyed to a repairing part through the CCTV robot, the position of the jack is flexibly controlled, the pipeline repairing efficiency is further improved, and the field pipeline repairing work is simpler, quicker and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair engineering technology, and in particular to a jack for pipeline repair. Background Technology

[0002] In the process of pipeline repair, some existing devices often encounter the problem of being unable to flexibly deal with various emergencies. This makes it difficult to take timely and effective rescue measures once any problems occur during the operation. This limitation not only affects the smoothness of the operation, but also greatly restricts the improvement of pipeline repair construction efficiency. To address this issue, a pipeline repair jack is proposed. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a jack for pipeline repair, which aims to improve the problems of some existing jack devices being unable to monitor pipeline repair operations and being unable to move the jack position flexibly and quickly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A pipe repair jack includes a CCTV robot. The CCTV robot has a monitor transmission port on its exterior. A telescopic device is fixedly connected to the front end of the CCTV robot. A push rod is fixedly connected to the output end of the telescopic device. A limiting mechanism is provided on the exterior of the telescopic device. A repair mechanism is provided at the other end of the push rod. The repair mechanism includes a rotating motor. The interior of the rotating motor is installed on the exterior of the push rod. A connector is threaded to the exterior of the rotating motor. A fixing bolt is threaded to the interior of the connector. An expansion block is threaded to the exterior of the fixing bolt. A fixing component is threaded to one end of the fixing bolt. A hydraulic device is fixedly connected to the exterior of the fixing component. A hydraulic pipe connection port is fixedly connected to the input end of the hydraulic device. A connecting component is fixedly connected to the output end of the hydraulic device. Two arc-shaped steel plates are fixedly connected to the exterior of the connecting component.

[0006] The above technical solution works as follows: The CCTV robot is activated and transmits the pipeline image captured by the internal camera through the monitor transmission port. Subsequently, the telescopic device operates, pushing the connected push rod, and the limiting mechanism works synchronously to ensure the stable operation of the telescopic device. The push rod drives the repair mechanism to move to the designated position. At this time, the rotary motor starts, driving the connecting parts to rotate. The fixing bolts drive the expansion block and fixing components. Then, the hydraulic device starts working after hydraulic oil is connected through the hydraulic pipe connection port. Its output power is transmitted to the connecting components, ultimately causing the two arc-shaped steel plates to expand or contract to perform pipeline repair work.

[0007] As a further description of the above technical solution:

[0008] The limiting mechanism includes a fixed arc seat, which is externally fixedly connected to the outside of the telescopic device. A support plate is threadedly connected to the bottom of the fixed arc seat. A pipe clamping plate is externally fixedly connected to the telescopic device. A fixed clamping plate is threadedly connected to the outside of the pipe clamping plate. A gear is fixedly connected to the other end of the push rod.

[0009] Through the above technical solution: the telescopic device is activated to push the push rod to move. At this time, the fixed arc seat and the support plate cooperate to provide support for the telescopic device. At the same time, the pipe clamping plate and the fixed clamping plate cooperate to fix the hydraulic pipe, while the gear at the other end of the push rod is prepared for the angle adjustment of the subsequent repair mechanism.

[0010] As a further description of the above technical solution:

[0011] The telescopic device has a limiting groove inside, the push rod is fixedly connected to a limiting plate outside, and a bottom ring is fixedly connected to one end of the push rod near the telescopic device.

[0012] The above technical solution involves a telescopic device that pushes a push rod, a limiting plate that guides the push rod to extend and retract linearly within a limiting groove, and a bottom ring that restricts its stroke.

[0013] As a further description of the above technical solution:

[0014] The external thread of the support plate is connected to the outside of the CCTV robot, and the external sliding connection of the limiting plate is connected to the inside of the limiting groove.

[0015] With the above technical solution: after the CCTV robot is started, the support plate provides support for the telescopic device to ensure stable operation. At the same time, the limit plate slides in the limit groove to guide the push rod to move linearly.

[0016] As a further description of the above technical solution:

[0017] The fixing assembly includes two L-shaped plates, the internal threads of which are connected to the outside of the fixing bolt, and a main tool frame is threaded to the adjacent side of the two L-shaped plates. The main tool frame is externally fixedly connected to the outside of the hydraulic device.

[0018] The above technical solution works as follows: when the hydraulic device is working, the power is transmitted through the main frame. The main frame connects two L-shaped plates, which, with the help of fixing bolts, stably support and transmit the power of the hydraulic device.

[0019] As a further description of the above technical solution:

[0020] The connecting assembly includes a secondary tool frame, which is externally fixedly connected to the output end of the hydraulic device, and secondary connecting rods are rotatably connected to both ends of the secondary tool frame.

[0021] Through the above technical solution: after the hydraulic device is started, the power is transmitted to the auxiliary tool frame, which then drives the auxiliary connecting rods that are rotatably connected at both ends. The auxiliary connecting rods begin to operate, preparing for the subsequent pushing of the arc-shaped steel plate.

[0022] As a further description of the above technical solution:

[0023] The other ends of the two auxiliary connecting rods are rotatably connected to rotating seats, and the more distant side of the two rotating seats is fixedly connected to the adjacent side of the two arc-shaped steel plates respectively;

[0024] Through the above technical solution: the operating auxiliary connecting rod transmits power to the rotating seat, and the rotating seat, under force, drives the arc-shaped steel plate fixedly connected to it, causing the two arc-shaped steel plates to start moving according to the power direction of the auxiliary connecting rod.

[0025] As a further description of the above technical solution:

[0026] Main connecting rods are fixedly connected to the adjacent sides of the two arc-shaped steel plates, and the adjacent sides of the two main connecting rods are rotatably connected to the outer ends of the main I-frame.

[0027] Through the above technical solution: when the arc-shaped steel plate moves under the drive of the rotating seat, the main connecting rod connected to it moves accordingly. The main connecting rod rotates around the two ends of the main frame to assist the arc-shaped steel plate in stabilizing its movement.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the repair mechanism is connected to a CCTV robot, enabling the repair mechanism to move and change position flexibly and quickly. A rotating motor starts the mechanism, causing the connected connector to rotate. The connector then drives the expansion block, allowing the repair mechanism to flexibly change angles to better adapt to different pipeline repair needs. Hydraulic oil is input into the hydraulic device through the hydraulic pipe connection port, driving the connecting component at the output end of the hydraulic device. This allows the connected arc-shaped steel plate to precisely expand or contract, efficiently repairing and providing strong support for damaged parts of the pipeline. This enables the CCTV robot to quickly transport jacks to the repair site, flexibly control the jack position, and thus improve pipeline repair efficiency, making on-site pipeline repair work simpler, faster, and more efficient.

[0030] 2. In this utility model, with the cooperation of the pipe clamping plate and the fixed clamping plate, the hydraulic pipe is firmly fixed on the telescopic device, so that the hydraulic pipe will not be displaced during operation. With the cooperation of the limiting groove and the limiting plate, the limiting plate is fixed to the outside of the push rod and slides in the limiting groove, so that the push rod can stably extend and retract in a straight line. With the cooperation of the gear and the repair mechanism, the repair mechanism can flexibly change its angle, so as to solve the problem that the repair mechanism is difficult to accurately align with the pipe repair part after the jack position is finely adjusted, thereby better realizing the pipe repair work. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of a pipe repair jack proposed in this utility model;

[0032] Figure 2 This is a schematic diagram of the support plate of a jack for pipe repair proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the telescopic device of a pipe repair jack proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the hydraulic device for a pipe repair jack proposed in this utility model;

[0035] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0036] Legend:

[0037] 1. CCTV robot; 2. Monitor transmission port; 3. Push rod; 4. Telescopic device; 5. Repair mechanism; 51. Rotary motor; 52. Connector; 53. Extension block; 54. Fixing bolt; 55. Fixing component; 551. L-shaped plate; 552. Main tool frame; 56. Hydraulic device; 57. Hydraulic pipe connection port; 58. Connecting component; 581. Main connecting rod; 582. Rotary seat; 583. Secondary tool frame; 584. Secondary connecting rod; 59. Arc-shaped steel plate; 6. Restriction mechanism; 61. Support plate; 62. Fixed arc seat; 63. Pipe clamp; 64. Fixed clamp; 65. Limiting groove; 66. Limiting plate; 67. Bottom ring; 68. Gear. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of a pipe repair jack, including a CCTV robot 1. The CCTV robot 1 is used to inspect the internal condition of the pipe and acquire image information of the pipe's interior through devices such as cameras, providing a basis for subsequent pipe repair work. It integrates a camera, lighting device, and data transmission system. The camera captures images of the pipe's interior, the lighting device ensures sufficient light inside the pipe to obtain clear images, and the data transmission system transmits the captured images in real time to a monitor transmission port 2. The CCTV robot 1 is externally equipped with a monitor transmission port 2, which receives and transmits CCTV images. The image of the inside of the pipeline transmitted by the operator 1 allows the operator to intuitively understand the condition of the pipeline through the monitor and determine the location and extent of pipeline repair. The external front end of the CCTV robot 1 is fixedly connected to the telescopic device 4, which provides power to the push rod 3, enabling it to perform linear telescopic movement, thereby adjusting the position of the repair mechanism 5. The output end of the telescopic device 4 is fixedly connected to the push rod 3, which serves as the output component of the telescopic device 4, transmitting the power of the telescopic device 4 to the repair mechanism 5, pushing the repair mechanism 5 to the location of pipeline repair. The telescopic device 4 is equipped with a limiting mechanism 6 on its exterior, and the other end of the push rod 3 is equipped with the repair mechanism 5.

[0040] Specifically, CCTV robot 1 captures images of the inside of the pipeline using a camera, and a lighting device ensures sufficient light. The data transmission system transmits the images in real time to the monitor transmission port 2, helping operators determine the location and extent of pipeline repair. An extension device 4 is fixedly connected to the front end of CCTV robot 1. The extension device 4 provides power to push rod 3, enabling it to extend and retract linearly to adjust the position of repair mechanism 5. Push rod 3 serves as the output component of extension device 4, connecting to its output end, thereby pushing repair mechanism 5 to the location of pipeline repair. A limiting mechanism 6 is provided outside extension device 4 to restrict movement, while repair mechanism 5 is located at the other end of push rod 3.

[0041] The repair mechanism 5 includes a rotary motor 51, which provides power for the rotation of the connector 52, enabling the repair mechanism 5 to be angled to adapt to different pipeline repair needs. The rotary motor 51 is internally mounted on the outside of the push rod 3. The external thread of the rotary motor 51 is connected to the connector 52, which connects the rotary motor 51 and the expansion block 53, transmitting the power of the rotary motor 51 to the expansion block 53. The internal thread of the connector 52 is connected to a fixing bolt 54, which is a 5mm diameter bolt used to connect the expansion block 53, the connector 52, and the fixing assembly 55, ensuring a firm connection between the components. The external thread of the fixing bolt 54 is connected to the expansion block 53, which is made of 200*200*5mm aluminum alloy plate, providing an installation position for the fixing bolt 54 and increasing the stability and expandability of the repair mechanism 5.

[0042] One end of the fixing bolt 54 is threadedly connected to a fixing component 55. The fixing component 55 includes two L-shaped plates 551. The L-shaped plates 551 are connected to the fixing bolt 54 and the main tool holder 552, providing fixed support for the hydraulic device 56. The internal threads of the two L-shaped plates 551 are connected to the outside of the fixing bolt 54. The main tool holder 552 is threadedly connected to the adjacent side of the two L-shaped plates 551. The main tool holder 552 connects the two L-shaped plates 551 and provides rotational support for the connecting component 58. The outside of the main tool holder 552 is fixedly connected to the outside of the hydraulic device 56, providing a fixed... A hydraulic device 56 is externally fixedly connected to component 55. The hydraulic device 56 provides power to the connecting component 58, enabling the arc-shaped steel plate 59 to expand or contract, thus repairing the pipeline. A hydraulic pipe connection port 57 is fixedly connected to the input end of the hydraulic device 56, providing a hydraulic oil input and output channel for the hydraulic device 56. A connecting component 58 is fixedly connected to the output end of the hydraulic device 56. The connecting component 58 includes a secondary tool frame 583, which connects the hydraulic device 56 and a secondary connecting rod 584, thus connecting the hydraulic device 56... The power is transmitted to the auxiliary connecting rod 584. The auxiliary tool frame 583 is externally fixedly connected to the output end of the hydraulic device 56. Both ends of the auxiliary tool frame 583 are rotatably connected to the auxiliary connecting rod 584. The auxiliary connecting rod 584 connects the auxiliary tool frame 583 and the rotating seat 582, transmitting the movement of the auxiliary tool frame 583 to the rotating seat 582. The other ends of both auxiliary connecting rods 584 are rotatably connected to the rotating seat 582. The rotating seat 582 connects the auxiliary connecting rod 584 and the arc-shaped steel plate 59, allowing the arc-shaped steel plate 59 to rotate with the movement of the auxiliary connecting rods 584. The two rotating seats 582... The more distant side is fixedly connected to the adjacent side of the two arc-shaped steel plates 59. The adjacent side of the two arc-shaped steel plates 59 is fixedly connected to the main connecting rod 581. The main connecting rod 581 connects the arc-shaped steel plate 59 and the main I-frame 552, providing support and guidance for the movement of the arc-shaped steel plate 59. The adjacent side of the two main connecting rods 581 is rotatably connected to the outer ends of the main I-frame 552. The outer side of the connecting component 58 is fixedly connected to two arc-shaped steel plates 59. Under the drive of the hydraulic device 56, the arc-shaped steel plates 59 unfold or retract to repair and support the damaged parts of the pipeline.

[0043] Specifically, in the repair mechanism 5, the rotating motor 51 is installed outside the push rod 3. When it operates, it provides rotational power to the threaded connector 52, thereby enabling the angle adjustment of the repair mechanism 5 to accommodate various pipeline repair situations. The connector 52 is connected to the expansion block 53 and the fixing component 55 via fixing bolts 54, ensuring a stable connection between the components. The fixing component 55 includes two L-shaped plates 551. One end of the L-shaped plate 551 is threaded to the fixing bolt 54, and the other end is threaded to the main tool frame 552, providing stable support for the hydraulic device 56. The input end of the hydraulic device 56 is connected to the hydraulic pipe through the hydraulic pipe connection port 57, and the output end is connected to... The auxiliary tool frame 583 of the connecting component 58 is fixed, and the two ends of the auxiliary tool frame 583 are rotatably connected to the auxiliary connecting rods 584. The auxiliary connecting rods 584 are then rotatably connected to the rotating seat 582. The rotating seat 582 is connected to the arc-shaped steel plate 59. At the same time, the arc-shaped steel plate 59 is rotatably connected to the main tool frame 552 through the main connecting rod 581. When the hydraulic device 56 operates, the power is transmitted to the auxiliary connecting rods 584 through the auxiliary tool frame 583, which drives the rotating seat 582 and the arc-shaped steel plate 59 to move. The main connecting rod 581 provides support and guidance for the movement of the arc-shaped steel plate 59, so that the arc-shaped steel plate 59 can be expanded or contracted under the drive of the hydraulic device 56 for the repair and support of the damaged parts of the pipeline.

[0044] Reference Figure 2 , Figure 3 and Figure 5The limiting mechanism 6 includes a fixed arc seat 62, which is fixed to the outside of the telescopic device 4. The fixed arc seat 62 is externally and fixedly connected to the outside of the telescopic device 4. A support plate 61 is threadedly connected to the bottom of the fixed arc seat 62. The support plate 61 connects the fixed arc seat 62 and the CCTV robot 1, providing support for the telescopic device 4 and increasing the stability of the entire device. A pipe clamping plate 63 is fixedly connected to the outside of the telescopic device 4. The pipe clamping plate 63 cooperates with the fixed clamping plate 64 to fix the hydraulic pipe to the telescopic device 4, preventing displacement during operation. The fixed clamping plate 64 is threadedly connected to the outside of the pipe clamping plate 63. The clamping plate cooperates with the pipe clamping plate 63 to fix the hydraulic pipe to the telescopic device 4. A gear is fixedly connected to the other end of the push rod 3. 68. Gear 68 cooperates with repair mechanism 5 to change the angle of repair mechanism 5. A limit groove 65 is opened inside the telescopic device 4. The limit groove 65 is opened inside the telescopic device 4 and cooperates with the limit plate 66 to limit the movement of push rod 3, so that its extension and retraction are in a straight line. The limit plate 66 is fixedly connected to the outside of push rod 3. The limit plate 66 is fixed to the outside of push rod 3 and cooperates with the limit groove 65 to limit the movement of push rod 3. A bottom ring 67 is fixedly connected to the end of push rod 3 near telescopic device 4. The bottom ring 67 is fixed to the end of push rod 3 near telescopic device 4, which plays a protective and limiting role to prevent push rod 3 from excessive extension and retraction. The external thread of support plate 61 is connected to the outside of CCTV robot 1. The external sliding connection of limit plate 66 is connected to the inside of limit groove 65.

[0045] Specifically, the fixed arc seat 62 is fixed to the outside of the telescopic device 4, and its bottom is connected to the support plate 61 by threads. The other end of the support plate 61 is threaded to the outside of the CCTV robot 1, thus providing support for the telescopic device 4. A pipe clamping plate 63 is also fixed to the outside of the telescopic device 4. The pipe clamping plate 63 and the fixed clamping plate 64 connected by threads work together to secure the hydraulic pipe to the telescopic device 4. At one end of the push rod 3, a gear 68 is fixedly connected. The gear 68 cooperates with the repair mechanism 5 to adjust its angle. At the same time, a limiting groove 65 is opened inside the telescopic device 4. The limiting plate 66 fixed to the outside of the push rod 3 fits into it and slides in the limiting groove 65 to ensure that the push rod 3 makes linear telescopic movements. At the end of the push rod 3 near the telescopic device 4, a bottom ring 67 is fixed to protect the push rod 3 and prevent it from excessively telescopic.

[0046] Working principle: CCTV robot 1 is turned on and transmits images to monitor transmission port 2 in real time through the data transmission system. After determining the location of the pipeline that needs repair, telescopic device 4 is activated to provide power to push rod 3. Push rod 3 transmits power to repair mechanism 5, pushing repair mechanism 5 along the pipeline to the location that needs repair. During this process, limit plate 66 slides in limit groove 65 to ensure that push rod 3 makes linear telescopic movements. Bottom ring 67 prevents push rod 3 from excessive telescopic movement. At the same time, support plate 61 connects fixed arc seat 62 to CCTV robot 1 to provide support for telescopic device 4 and increase stability. When repair mechanism 5 reaches the designated position.

[0047] If angle adjustment is required, the rotating motor 51 starts, providing rotational power to the connector 52. The connector 52 transmits the power to the extension block 53, which is connected to the fixing component 55 via fixing bolts 54. At this time, gear 68 cooperates with the repair mechanism 5 to assist the repair mechanism 5 in adjusting its angle to adapt to different pipeline repair needs. After the repair mechanism 5's angle is adjusted, the hydraulic device 56 starts working. Hydraulic oil is input into the hydraulic device 56 through the hydraulic pipe connection port 57. The auxiliary tool frame 583 at the output end of the hydraulic device 56 drives the auxiliary connecting rod 584 to move. The connecting rod 584 transmits the motion to the rotating seat 582, which drives the arc-shaped steel plate 59 to rotate. At the same time, the main connecting rod 581 connects the arc-shaped steel plate 59 to the main frame 552, providing support and guidance for the movement of the arc-shaped steel plate 59. Driven by the hydraulic device 56, the two arc-shaped steel plates 59 expand or contract to repair and support the damaged parts of the pipeline. During the entire operation, the pipeline clamping plate 63 cooperates with the fixed clamping plate 64 to fix the hydraulic pipe on the telescopic device 4, preventing it from shifting during operation and ensuring the stable operation of the hydraulic system.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe repair jack comprising a CCTV robot (1), characterised in that: The external of the CCTV robot (1) is provided with a monitor transmission port (2), the external front end of the CCTV robot (1) is fixedly connected with a telescopic device (4), the output end of the telescopic device (4) is fixedly connected with a push rod (3), the external of the telescopic device (4) is provided with a limiting mechanism (6), the other end of the push rod (3) is provided with a repairing mechanism (5); The repairing mechanism (5) comprises a rotating motor (51), the internal of the rotating motor (51) is mounted on the external of the push rod (3), the external of the rotating motor (51) is threadedly connected with a connecting piece (52), the internal of the connecting piece (52) is threadedly connected with a fixed bolt (54), the external of the fixed bolt (54) is threadedly connected with an expansion block (53), one end of the fixed bolt (54) is threadedly connected with a fixed assembly (55), the external of the fixed assembly (55) is fixedly connected with a hydraulic device (56), the external of the hydraulic device (56) is fixedly connected with a hydraulic pipe connecting port (57), the output end of the hydraulic device (56) is fixedly connected with a connecting assembly (58), the external of the connecting assembly (58) is fixedly connected with two arc steel plates (59).

2. A pipe repair jack as claimed in claim 1, wherein: The limiting mechanism (6) comprises a fixed arc seat (62), the external of the fixed arc seat (62) is fixedly connected on the external of the telescopic device (4), the bottom of the fixed arc seat (62) is threadedly connected with a supporting plate (61), the external of the telescopic device (4) is fixedly connected with a pipeline clamping plate (63), the external of the pipeline clamping plate (63) is threadedly connected with a fixed clamping plate (64), the other end of the push rod (3) is fixedly connected with a gear (68).

3. A pipe repair jack as claimed in claim 2, wherein: The internal of the telescopic device (4) is provided with a limiting groove (65), the external of the push rod (3) is fixedly connected with a limiting plate (66), one end of the push rod (3) close to the telescopic device (4) is fixedly connected with a bottom ring (67).

4. A pipe repair jack as claimed in claim 3, wherein: The external of the supporting plate (61) is threadedly connected on the external of the CCTV robot (1), the external of the limiting plate (66) is slidingly connected in the internal of the limiting groove (65).

5. The pipe repair jack of claim 1, wherein: The fixed assembly (55) comprises two L-shaped plates (551), the internal of the two L-shaped plates (551) is threadedly connected on the external of the fixed bolt (54), the side close to the other of the two L-shaped plates (551) is threadedly connected with a main work rack (552), the external of the main work rack (552) is fixedly connected on the external of the hydraulic device (56).

6. A pipe repair jack as claimed in claim 5 wherein: The connecting assembly (58) comprises a secondary work rack (583), the external of the secondary work rack (583) is fixedly connected on the output end of the hydraulic device (56), the external of the secondary work rack (583) is rotatably connected with a secondary connecting rod (584) at both ends.

7. A pipe repair jack as claimed in claim 6 wherein: The other end of the two secondary connecting rods (584) is rotatably connected with a rotating seat (582), the side far away from the other of the two rotating seats (582) is fixedly connected with the side close to the other of the two arc steel plates (59).

8. A pipe repair jack as claimed in claim 7, wherein: The proximal sides of the two arc-shaped steel plates (59) are fixedly connected with main connecting rods (581), and the proximal sides of the two main connecting rods (581) are rotatably connected to the outer two ends of the main work stand (552).

Images