A device for trenchless rehabilitation of a municipal pipe

Abstract

The utility model discloses a kind of municipal pipeline trenchless repair devices, it is related to pipeline repair technical field, including cylinder, reciprocating screw rod is rotationally arranged in cylinder, driven pulley is fixedly connected with reciprocating screw rod coaxially on the outer wall of one end of cylinder, pulley motor is installed on the side of driven pulley, transmission belt is installed between the output shaft of pulley motor and driven pulley, the first limit disc is sleeved with one end of reciprocating screw rod, the first slider on the side of first limit disc is sleeved on reciprocating screw rod, and the side of first slider of cylinder is equipped with partition plate;The utility model is through the cooperation of the first connecting rod of the first slider outer wall circumferential side, connecting rod and moving wheel, the position of moving wheel is conveniently adjusted flexibly according to the size of pipeline aperture;Finally, the problem that existing device cannot effectively adhere to the movement of inner wall of pipeline when encountering different aperture pipeline, is prone to deviation even jammed, is solved, and the moving stability and work efficiency of device in municipal pipeline trenchless repair process are improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair technology, and in particular to a trenchless repair device for municipal pipelines. Background Technology

[0002] In the field of municipal engineering, underground pipeline systems play an important role in drainage, water supply, and gas supply. However, with the increase in service life, problems such as pipeline aging, damage, and leakage have gradually become prominent. Traditional pipeline repair methods usually require large-scale excavation of the ground, which is not only time-consuming and costly, but also has a serious impact on traffic, the surrounding environment, and residents' lives. This is especially true in urban centers or major traffic arteries, where the difficulty and cost of excavation repair are even greater. To solve these problems, trenchless repair technology has emerged. This technology avoids large-scale excavation of the ground by carrying out repair work inside the pipeline, and has advantages such as fast construction speed, low cost, and minimal environmental impact.

[0003] Most existing trenchless repair devices for municipal pipelines use fixed moving parts, which cannot be flexibly adjusted according to changes in the inner diameter of the pipeline. When encountering pipelines with different diameters, it is difficult to effectively fit the inner wall of the pipeline. Because the position of the moving parts cannot be flexibly adjusted, there is a large gap between the device and the inner wall of the pipeline during movement, which cannot obtain stable support and guidance. During movement, this gap will cause the device to deviate from the intended route. Once deviation occurs, the device is prone to collision and scraping with the inner wall of the pipeline. In severe cases, it may even be stuck by protrusions or foreign objects in the pipeline, causing the equipment to malfunction. This not only delays the repair period but may also cause equipment damage, increase maintenance costs, and greatly affect the efficiency and safety of trenchless repair work for municipal pipelines. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a trenchless repair device for municipal pipelines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a trenchless repair device for municipal pipelines, comprising a cylinder, a reciprocating screw coaxially rotatably mounted inside the cylinder, a driven pulley coaxially fixed to the outer wall of one end of the cylinder and the reciprocating screw, a pulley motor mounted on one side of the driven pulley, a transmission belt mounted between the output shaft of the pulley motor and the driven pulley, a first limiting disc sleeved on one end of the reciprocating screw, a first slider sleeved on one side of the first limiting disc, a partition plate located on one side of the cylinder at the first slider, a third slider sleeved on the other end of the reciprocating screw, an air pump installed inside the third slider, a repair airbag sleeved on the outer wall of the third slider, and a stop block fixedly mounted on one end of the reciprocating screw.

[0006] Preferably, a first spring is fixedly connected to one side of the first limiting plate and sleeved on the reciprocating lead screw, one end of the first spring is fixedly connected to one end of the inner wall of the cylinder, a second spring is fixedly connected to one end of the first slider, one end of the second spring is fixedly connected to one side of the partition plate, and a third spring is fixedly connected to the other side of the partition plate.

[0007] Preferably, one end of the third spring is fixedly provided with a second slider, the second slider is sleeved on the reciprocating lead screw, one end of the second slider is provided with a second limiting plate sleeved on the reciprocating lead screw, one side of the second limiting plate is fixedly provided with a fourth spring sleeved on the reciprocating lead screw, one end of the fourth spring is fixedly provided with a fixing block, and the fixing block is fixedly connected to the inner wall of the cylinder.

[0008] Preferably, a plurality of electric actuators are installed on the periphery of one end face of the fixed block, and the telescopic ends of the electric actuators are fixedly connected to the third slider.

[0009] Preferably, the reciprocating lead screw is not threaded between the third slider and the second limiting plate. Multiple third connecting rods are hinged to the outer circumference of the second slider. A second connecting rod is hinged to the fixed block and is staggered with the third connecting rod. The second connecting rod and the third connecting rod form an X shape. A hinge shaft passes through the middle of the second connecting rod and the third connecting rod. A fixing plate is hinged to one end of both the second connecting rod and the third connecting rod. Multiple arc-shaped through slots for receiving the fixing plates are opened on the outer circumference of the cylinder.

[0010] Preferably, the outer wall of the first slider is provided with a plurality of first connecting rods, one end of the first connecting rod is hinged to a connecting rod, one end of the connecting rod extends out of the outer wall of the cylinder, the outer wall of the cylinder is provided with a rectangular through groove at the connecting rod, and one end of the connecting rod is equipped with a moving wheel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the first connecting rod, connecting rod, and moving wheel on the outer periphery of the first slider, facilitates flexible adjustment of the position of the moving wheel according to the pipe diameter, improving the fit between the device and the inner wall of the pipe when moving within the pipe, thus enabling stable movement of the device within the pipe. Furthermore, through the cooperation of the third connecting rod on the outer periphery of the second slider, the second connecting rod on the fixing block, and the fixing plate, when encountering pipes of different diameters, the movement of the second slider drives the X-shaped structure formed by the third connecting rod and the second connecting rod to extend or retract, allowing the fixing plate to adaptively adjust the contact state between the device and the inner wall of the pipe, improving the device's adaptability to pipes of different diameters. Ultimately, this solves the problem that existing devices cannot effectively fit the inner wall of the pipe when encountering pipes of different diameters, easily causing deviation or even jamming, thus improving the device's movement stability and work efficiency in the trenchless repair process of municipal pipelines. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model;

[0014] Figure 2 This is a first-view schematic diagram of the overall cross-sectional structure proposed in this utility model;

[0015] Figure 3 This is a schematic cross-sectional view of the third slider proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the reciprocating lead screw proposed in this utility model.

[0017] The numbers in the diagram are as follows: 1. Cylinder; 2. Moving wheel; 3. Pulley motor; 4. Driven pulley; 5. Reciprocating screw; 6. First connecting rod; 7. First limit plate; 8. First slider; 9. Second slider; 10. Fixing block; 11. Electric actuator; 12. Air pump; 13. Stop block; 14. Repair airbag; 15. Third slider; 16. Fixing plate; 17. Second connecting rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4This utility model discloses a trenchless repair device for municipal pipelines, comprising a cylinder 1, a reciprocating screw 5 coaxially rotatable inside the cylinder 1, a driven pulley 4 coaxially fixed to the outer wall of one end of the cylinder 1 with the reciprocating screw 5, a pulley motor 3 mounted on one side of the driven pulley 4, a transmission belt installed between the output shaft of the pulley motor 3 and the driven pulley 4, a first limiting disc 7 sleeved on one end of the reciprocating screw 5, a first slider 8 sleeved on one side of the first limiting disc 7, a partition plate located on one side of the cylinder 1 at the first slider 8, a third slider 15 sleeved on the other end of the reciprocating screw 5, an air pump 12 installed inside the third slider 15, and a repair airbag 14 sleeved on the outer wall of the third slider 15. A stop block 13 is fixedly connected to one end of the reciprocating screw 5; the pulley motor 3, model Y90S-2, provides stable power output to the device; the repair airbag 14 is made of butyl rubber, which has good aging and corrosion resistance and can withstand high air pressure; this structure drives the driven pulley 4 through the pulley motor 3, thereby driving the reciprocating screw 5 to rotate, realizing the linear movement of the first slider 8 and the third slider 15, providing a power basis for the movement and repair operation of the device in the pipeline, while the repair airbag 14 can effectively repair the pipeline damage; a first spring is fixedly connected to one side of the first limiting plate 7 and sleeved on the reciprocating screw 5, one end of the first spring being fixed to one end of the inner wall of the cylinder 1. Next, a second spring is fixedly connected to one end of the first slider 8, and one end of the second spring is fixedly connected to one side of the partition plate. A third spring is fixedly connected to the other side of the partition plate. The first, second, and third springs are all made of 65Mn spring steel, which has a high elastic limit and fatigue strength, and can maintain good elastic performance for a long time. The setting of these springs provides a buffer and reset function for the movement of the first slider 8, preventing the first slider 8 from being damaged by excessive impact force during movement, while ensuring that the first slider 8 can move stably on the reciprocating screw 5, thus improving the reliability and service life of the device. A second slider 9 is fixedly connected to one end of the third spring, and the second slider 9 is sleeved on the reciprocating screw 5. One end of the slider 9 is provided with a second limiting plate sleeved on the reciprocating lead screw 5. A fourth spring sleeved on the reciprocating lead screw 5 is fixedly connected to one side of the second limiting plate. A fixing block 10 is fixedly connected to one end of the fourth spring and is fixedly connected to the inner wall of the cylinder 1. The fourth spring is also made of 65Mn spring steel, and the second slider 9 is made of 45 steel. After quenching and tempering, it has high strength and wear resistance. This structure limits and buffers the movement of the second slider 9 through the fourth spring and the second limiting plate, ensuring that the movement of the second slider 9 on the reciprocating lead screw 5 is more stable. At the same time, the second slider 9 made of 45 steel can withstand a large force, ensuring the structural stability of the device.

[0020] In this utility model, multiple electric actuators 11 are installed around one end face of the fixing block 10, and the telescopic ends of the electric actuators 11 are fixedly connected to the third slider 15; the electric actuators 11 are of model ANT-26 and can precisely control the movement position of the third slider 15; by telescoping the electric actuators 11, the position of the third slider 15 can be precisely adjusted, so that the repair airbag 14 can accurately reach the pipe rupture, improving the accuracy of the repair operation and ensuring the repair effect; the reciprocating screw 5 is located between the third slider 15 and the second limiting plate and has no thread. Multiple third connecting rods are hinged to the outer circumference of the two sliders 9. Second connecting rods 17, staggered with the third connecting rods, are hinged to the fixing block 10, forming an X-shape with the third connecting rods. A hinge shaft passes through the middle of the second connecting rod 17 and the third connecting rod. A fixing plate 16 is hinged to one end of each of the second and third connecting rods. Multiple arc-shaped slots for housing the fixing plates 16 are opened on the outer circumference of the cylinder 1. The fixing plates 16 are made of aluminum alloy, which is lightweight and high-strength, capable of... While ensuring support strength, the overall weight of the device is reduced. When the device encounters pipes of different diameters, the movement of the second slider 9 drives the X-shaped structure composed of the third connecting rod and the second connecting rod 17 to extend or retract, thereby adaptively adjusting the contact state between the device and the inner wall of the pipe, enhancing the device's adaptability to pipes of different diameters and improving the device's stability within the pipe. The outer wall of the first slider 8 is provided with multiple first connecting rods 6. One end of the first connecting rod 6 is hinged to a connecting rod, and one end of the connecting rod extends out of the outer wall of the cylinder 1. Rectangular through slots are opened on the outer wall of the cylinder 1 at the connecting rods. A moving wheel 2 is installed at one end of the connecting rod. The moving wheel 2 is made of polyurethane, which has good wear resistance and impact resistance. By moving the first slider 8 on the reciprocating screw 5, the first connecting rod 6 and the connecting rod are driven, allowing the moving wheel 2 to flexibly adjust its position according to the pipe diameter, ensuring that the moving wheel 2 is in full contact with the inner wall of the pipe, improving the stability and flexibility of the device when moving within the pipe, and enabling the device to pass smoothly through pipes of different diameters.

[0021] Working Principle: When this utility model is used, when the pulley motor 3 is started, it drives the driven pulley 4 to rotate through the transmission belt, thereby causing the reciprocating screw 5 inside the cylinder 1 to start rotating. Under the action of the screw drive, the first slider 8 moves towards the first limiting plate 7 through the reciprocating screw 5. During this process, the first connecting rod 6 on the outer periphery of the first slider 8 drives the connecting rod, causing the moving wheel 2 at one end of the connecting rod to extend out of the outer wall of the cylinder 1. When the device enters the municipal pipeline, the moving wheel 2 contacts the inner wall of the pipeline. As the first slider 8 continues to move towards the first limiting plate 7, the device moves steadily along the inner wall of the pipeline under the support of the moving wheel 2. The first spring buffers and limits the movement of the first slider 8, preventing it from moving excessively. At the same time, the second slider 9 moves towards the second limiting plate through the reciprocating screw 5, and the third connecting rod hinged on the outer periphery of the second slider 9 moves accordingly. Since the second connecting rod 17 and the third connecting rod intersect to form an X-shaped hinge, The structure involves the movement of the second slider 9, which causes the X-shaped structure to expand and contract, driving the fixed plates 16, hinged at both ends, to extend along the arc-shaped through groove on the outer wall of the cylinder 1. When the device encounters pipes of different diameters, the second slider 9 moves towards the second limiting plate, allowing the fixed plates 16 to extend and fit tightly against the inner wall of the pipe, enhancing the stability and adaptability of the device when moving in pipes of different diameters. The fourth spring and the fixed block 10 limit and buffer the movement of the second slider 9. After the first slider 8 and the second slider 9 move to the predetermined position, the third slider 15 moves to the damaged part of the pipe under the action of the reciprocating screw 5. The electric push rod 11 on the periphery of the fixed block 10 extends and pushes the third slider 15, causing the repair airbag 14 on the outer wall of the third slider 15 to fit tightly against the damaged part of the pipe. Then, the air pump 12 starts to inflate the repair airbag 14, causing it to expand and squeeze the damaged part for repair, completing the trenchless repair work of the municipal pipeline.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A trenchless repair device for municipal pipelines, comprising a cylinder (1), characterized in that: The cylinder (1) is equipped with a reciprocating screw (5) that rotates coaxially inside. A driven pulley (4) is fixedly connected to the outer wall of one end of the cylinder (1) and the reciprocating screw (5) on the same axis. A pulley motor (3) is installed on one side of the driven pulley (4). A transmission belt is installed between the output shaft of the pulley motor (3) and the driven pulley (4). A first limiting plate (7) is sleeved on one end of the reciprocating screw (5). A first slider (8) is sleeved on one side of the first limiting plate (7) and sleeved on the reciprocating screw (5). A partition plate is provided on one side of the cylinder (1) located on the first slider (8). A third slider (15) is sleeved on the other end of the reciprocating screw (5). An air pump (12) is installed inside the third slider (15). A repair airbag (14) is sleeved on the outer wall of the third slider (15). A stop block (13) is fixedly connected to one end of the reciprocating screw (5).

2. The trenchless repair device for municipal pipelines according to claim 1, characterized in that: A first spring is fixedly connected to one side of the first limiting plate (7) and sleeved on the reciprocating screw (5). One end of the first spring is fixedly connected to one end of the inner wall of the cylinder (1). A second spring is fixedly connected to one end of the first slider (8). One end of the second spring is fixedly connected to one side of the partition plate. A third spring is fixedly connected to the other side of the partition plate.

3. The trenchless repair device for municipal pipelines according to claim 2, characterized in that: One end of the third spring is fixedly connected to a second slider (9), the second slider (9) is sleeved on the reciprocating screw (5), one end of the second slider (9) is provided with a second limiting plate sleeved on the reciprocating screw (5), one side of the second limiting plate is fixedly connected to a fourth spring sleeved on the reciprocating screw (5), one end of the fourth spring is fixedly connected to a fixing block (10), and the fixing block (10) is fixedly connected to the inner wall of the cylinder (1).

4. The trenchless repair device for municipal pipelines according to claim 3, characterized in that: Multiple electric push rods (11) are installed on the periphery of one end face of the fixed block (10), and the telescopic end of the electric push rod (11) is fixedly connected to the third slider (15).

5. A trenchless repair device for municipal pipelines according to claim 4, characterized in that: The reciprocating screw (5) is located between the third slider (15) and the second limiting plate without threads. Multiple third connecting rods are hinged to the outer wall of the second slider (9). A second connecting rod (17) is hinged to the fixed block (10) and is arranged alternately with the third connecting rod. The second connecting rod (17) and the third connecting rod form an X shape. A hinge shaft passes through the middle of the second connecting rod (17) and the third connecting rod. A fixing plate (16) is hinged to one end of the second connecting rod (17) and the third connecting rod. Multiple arc-shaped through slots for storing the fixing plate (16) are opened on the outer wall of the cylinder (1).

6. A trenchless repair device for municipal pipelines according to claim 5, characterized in that: The outer wall of the first slider (8) is provided with a plurality of first connecting rods (6). One end of the first connecting rod (6) is hinged to a connecting rod. One end of the connecting rod extends out of the outer wall of the cylinder (1). The outer wall of the cylinder (1) is provided with rectangular through grooves at the connecting rod. One end of the connecting rod is equipped with a moving wheel (2).

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