A pipe dredging device and method for use in trenchless rehabilitation techniques

Abstract

The application belongs to the technical field of building engineering, and discloses a pipeline dredging device and method applied to trenchless repair technology. The existing pipeline dredging tool is provided with waste tires at both ends of the angle steel support. Since the tire is a hollow structure, the silt will gather in front of the tire during dredging, and the gathered silt will flow from the inside of the tire to the rear of the tire, so that the cleaning effect is limited. The reciprocating pulling of the tire will cause the silt that is not scraped to enter the upstream inspection well. The technical scheme of the present application comprises a support, the two ends of the support are respectively fixedly connected with one end of a steel wire rope, the other end of the steel wire rope is respectively fixedly connected with a winch, a plurality of scrapers are arranged below the support, the present application is provided with a triangular supporting structure, the triangular supporting structure is uniformly stressed, has good stability, and can remain stable during towing. In addition, the present application is provided with a plurality of scrapers and can adjust the state of the scrapers, so that more silt can be cleaned to the downstream inspection well, and the use is convenient.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a pipeline dredging device and method applied to trenchless repair technology. Background Technology

[0002] Before trenchless repair and renovation projects, the silt inside the pipes should be removed. Currently, pipeline dredging techniques mainly include winch dredging, water brush dredging, and high-pressure water jet cleaning. Taking winch dredging as an example, this method is widely used throughout my country. It involves inserting a bamboo strip or pole through the section of pipe to be dredged. A steel wire rope is attached to one end of the bamboo strip or pole, and the other end of the dredging tool is attached to the rope. A winch is installed at each end of the pipe section. After the bamboo strip or pole has passed through the section, the steel wire rope is attached to one winch, and the other end of the dredging tool is attached to the other winch via the steel wire rope. The winches are then used to pull the steel wire rope back and forth, causing the dredging tool to scrape the silt into the downstream manhole, thus clearing the pipeline. This dredging method is suitable for pipes with severe siltation and densely adhered silt.

[0003] Existing cleaning tools often use recycled tires. For example, a pipe cleaning tool disclosed in patent CN204690942 U has an angle steel bracket with recycled tires installed at both ends. Although this cleaning tool is simple and readily available, it has the following problems when used: because the tire is hollow, sludge accumulates in front of the tire during cleaning and flows from inside the tire to the rear, thus limiting the cleaning effect; not much sludge is removed in one cleaning cycle. Moreover, if the tire is pulled back and forth, unscraped sludge will enter the upstream inspection well, while the process requires sludge to be scraped into the downstream inspection well. Obviously, the above-mentioned device cannot meet the construction requirements well. Summary of the Invention

[0004] To address the shortcomings of the prior art, the present invention aims to provide a pipeline dredging device and method for trenchless repair technology. This pipeline dredging device and method for trenchless repair technology is equipped with a triangular support structure. The triangular support structure has uniform force distribution and good stability, and can remain stable during dragging. Furthermore, the present invention is equipped with several scrapers and the state of the scrapers can be adjusted, thereby enabling more silt to be cleaned towards the downstream inspection well, making it convenient to use.

[0005] The technical solution adopted by this pipeline dredging device and method applied to trenchless repair technology to solve its technical problems is as follows:

[0006] A pipeline dredging device for trenchless repair technology is provided, including a support, with one end of a steel wire rope fixedly connected to each end of the support, and the other end of the steel wire rope fixedly connected to a winch. The device is characterized in that several scrapers are provided below the support, an adjustment device for driving the scrapers to rotate is provided on the support, and a triangular support structure is provided on the support, which consists of two sets of side support structures and a top support structure.

[0007] Furthermore, the adjustment device includes an elongated slot formed on the support. A shear telescopic frame is provided on the bottom surface of the support. One end of the shear telescopic frame is hinged to the bottom surface of the support via a pin. A control lever is connected to one end of the shear telescopic frame. A rotating shaft is rotatably installed on some of the hinge points of the shear telescopic frame. The upper end of each rotating shaft passes through the elongated slot and is fixedly installed with a gear. The lower end of the rotating shaft is fixedly connected to a corresponding scraper. A guide rail is fixedly installed on the top surface of the support. The guide rail is provided with several rack segments, which mesh with corresponding gears.

[0008] Furthermore, an angle iron is fixedly welded to the top of the support, and a positioning screw is threaded onto the angle iron. The positioning screw can be inserted between the teeth of one of the gears.

[0009] Furthermore, a tie rod is provided between two adjacent scrapers, with both ends of the tie rod penetrating the scraper, and a high-strength nut with threaded engagement is provided at each end of the tie rod.

[0010] Furthermore, the side support structure includes support arms, with support arms fixedly installed on both sides of the support, and side positioning wheels installed at the ends of the support arms.

[0011] Furthermore, the top support structure includes a telescopic structure and a positioning wheel. The telescopic structure is fixedly installed at the top end of the support, and the upper positioning wheel is installed on the top of the telescopic structure.

[0012] Furthermore, the telescopic structure consists of an upper positioning tube, a telescopic tube, and a locking bolt. The upper positioning tube is fixedly installed on the top surface of the support, the lower end of the telescopic rod is located inside the upper positioning tube, and the locking bolt passes through the upper positioning tube and is threadedly connected.

[0013] A pipeline dredging method for trenchless repair technology is also provided, employing a pipeline dredging device based on the above-mentioned trenchless repair technology, the steps of which include:

[0014] S1: Two winches are used, with the two winches respectively located at the upstream inspection well and the downstream inspection point;

[0015] S2: Lower the pipeline dredging device applied to trenchless repair technology from the upstream inspection well and into the dredging section;

[0016] S3: Connect the wire ropes of the two winches to the pipeline dredging device applied to trenchless repair technology after being guided by the guide wheel frame.

[0017] S4: Rotate the control lever to extend the shear telescopic frame. During the extension process, the scraper changes from a linear state to an unfolded state.

[0018] S5: Connect the tie rod to the adjacent scraper;

[0019] S6: Start the right winch and use the wire rope to pull the pipeline dredging device applied to trenchless repair technology to move to the downstream inspection well, scraping the sludge to the downstream inspection well;

[0020] S7: Remove the tie rod, rotate the control lever in the opposite direction, the shear telescopic frame retracts, and the scraper rotates back to its initial linear shape;

[0021] S8: Start the left winch and drag the pipeline dredging device applied to trenchless repair technology towards the upstream inspection well, bringing the pipeline dredging device applied to trenchless repair technology to the upstream inspection well;

[0022] S9: Repeat S4 to S8 until the silt is completely removed.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. This invention exemplifies a pipeline dredging device and method applied to trenchless repair technology. The device adjusts the contact between a triangular support structure and the inner wall of the pipe section being cleaned. An adjusting device drives a scraper to rotate, allowing the scraper to be adjusted to either an open plate-like state or a linear state. Guide wheel frames are fixedly installed on upstream and downstream inspection wells. A steel wire rope is looped around the corresponding guide wheel frame, and a winch and steel wire rope can pull the support to move. During dredging, the scraper is in an open plate-like state to scrape out silt. When pulled in the opposite direction, the scraper can be adjusted to a linear state. With low resistance and a compact shape, it prevents silt from being scraped into the upstream inspection well. Furthermore, a storage space can be formed between adjacent scrapers to hold a certain amount of silt. During dredging, several scrapers form a layered defense, allowing for the removal of a significant amount of silt in a single operation, thus improving work efficiency. Compared to existing technologies, this invention features a triangular support structure, which distributes force evenly and provides good stability, maintaining stability during dragging. Additionally, the invention includes several scrapers with adjustable states, enabling more silt to be removed towards the downstream inspection well, making it convenient to use.

[0025] 2. An example of the present invention is a pipeline dredging device and method applied to trenchless repair technology. By rotating the control lever, the shear telescopic frame can be extended or retracted. When the gear moves along the rack segment, the gear will rotate under the action of the rack segment, thereby driving the scraper to rotate, so as to adjust the state of the scraper.

[0026] 3. An example of the present invention is a pipeline dredging device and method applied to trenchless repair technology, wherein the positioning screw is used to lock the scraper in a linear state.

[0027] 4. An example of the present invention is a pipeline dredging device and method applied to trenchless repair technology. Since the adjacent scrapers are fixed and cannot rotate, that is, the gears cannot rotate, the scraper deployment state is locked. The tie rod can play the role of reinforcing support and locking the scraper.

[0028] 5. An example of the present invention is a pipeline dredging device and method applied to trenchless repair technology. In use, the side positioning wheels are positioned and contact the inner walls of the dredging pipe section on both sides. The side support structure is simple in structure and easy to use.

[0029] 6. An example of the present invention is a pipeline dredging device and method applied to trenchless repair technology. By adjusting the telescopic structure, the upper positioning wheel can contact the top of the pipe wall of the dredging section, move along it, and the side positioning wheel can fit against the pipe wall of the dredging section, thereby forming a triangular top support structure. The force is uniform and the stability is good. It can remain stable when dragged.

[0030] 7. An example of the present invention is a pipeline dredging device and method applied to trenchless repair technology. By rotating the locking bolt, the position of the telescopic rod can be adjusted and fixed. The telescopic structure is simple in structure and easy to use and adjust. Attached Figure Description

[0031] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the first state of the present invention;

[0033] Figure 2 This is a schematic diagram of the second state of the present invention;

[0034] Figure 3 This is a side view schematic diagram of the first state of the present invention;

[0035] Figure 4 This is a side view schematic diagram of the second state of the present invention;

[0036] Figure 5 This is a schematic diagram illustrating the usage state of the present invention.

[0037] In the diagram: 1 Support; 2 Long slot; 3 Shear telescopic frame; 4 Rotating shaft; 5 Gear; 6 Scraper; 7 Guide rail; 8 Rack section; 9 Upper positioning tube; 10 Telescopic tube; 11 Locking bolt; 12 Upper positioning wheel; 13 Support arm; 14 Side positioning wheel; 15 Angle iron; 16 Tie rod; 17 High-strength nut; 18 Cleaning section; 19 Control lever; 20 Upstream inspection well; 21 Downstream inspection well; 22 Upstream pipe section; 23 Guide wheel frame; 24 Downstream pipe section; 25 Winch; 26 Wire rope. Detailed Implementation

[0038] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] like Figure 1-5As shown, a pipeline dredging device applied to trenchless repair technology includes a support 1, which is a plate-shaped structure. One end of a steel wire rope 26 is fixedly connected to both ends of the support 1, and the other end of the steel wire rope 26 is fixedly connected to a winch 25. Several scrapers 6 are arranged below the support 1. An adjustment device for driving the scrapers 6 to rotate is provided on the support 1. A triangular support structure is provided on the support 1. The triangular support structure consists of two sets of side support structures and a top support structure. The contact points between the two sets of side support structures and the top support structure and the dredging pipe section 18 are triangularly distributed. Adjusting the triangular support structure to contact the inner wall of the cleaning pipe section 18 allows the scraper 6 to rotate via an adjustment device, thus adjusting the scraper 6 to either an open plate state or a linear state. Guide wheel frames 23 are fixedly installed on the upstream inspection well 20 and downstream inspection well 21 respectively. The wire rope 26 is looped around the corresponding guide wheel frame 23, and the support 1 can be moved by the winch 25 and the wire rope 26. During dredging, the scraper 6 is in an open plate state, scraping out the silt. When pulled in the opposite direction, the scraper 6 can be adjusted to a linear state with low resistance, forming a smooth flow. The scraper blades are designed to prevent sludge from being scraped into the upstream inspection well. Furthermore, a storage space can be formed between adjacent scraper blades 6 to hold a certain amount of sludge. During dredging, several scraper blades 6 form a layered defense, allowing for the removal of a significant amount of sludge in a single dredging operation, thus improving work efficiency. Compared to existing technologies, this invention features a triangular support structure, which distributes force evenly and provides good stability, maintaining stability during dragging. Additionally, the invention includes several scraper blades 6 with adjustable states, enabling more sludge to be removed towards the downstream inspection well, making it convenient to use.

[0041] like Figure 1 and 2 As shown, in a further preferred embodiment, the adjusting device includes a long slot 2, which is formed on the support 1. A shear telescopic frame 3 is provided on the bottom surface of the support 1. The shear telescopic frame 3 is composed of multiple sets of parallelogram structures hinged end to end. One end of the shear telescopic frame 3 is hinged to the bottom surface of the support 1 by a pin. A control lever 19 is connected to one end of the shear telescopic frame. A rotating shaft 4 is rotatably installed on some of the hinge points of the shear telescopic frame 3. The rotating shaft 4 passes through some of the hinge points of the shear telescopic frame 3 and is rotatably connected. The rotating shaft 4 can rotate freely. The upper end of each rotating shaft 4 passes through the long slot 2 and is fixedly installed with a gear 5. The diameter of the gear is larger than the width of the long slot. The lower end of the rotating shaft 4 is fixedly connected to the corresponding scraper 6. A guide rail 7 is fixedly installed on the top surface of the support 1. The guide rail 7 is parallel to the long slot 2. The guide rail 7 is provided with several rack segments 8, which mesh with the corresponding gears 5. By rotating the control lever 19, the shear telescopic frame 3 can be extended or retracted. When the gear 5 moves along the rack section 8, the gear 5 will rotate under the action of the rack section 8, thereby driving the scraper 6 to rotate, so as to adjust the state of the scraper 6.

[0042] like Figure 1-4 As shown, in a further preferred embodiment, an angle iron 15 is fixedly welded to the top of the support 1, and a positioning screw is threaded onto the angle iron 15. The positioning screw can be inserted between the teeth of one of the gears 5. When the positioning screw is inserted between the teeth of one of the gears 5, the scraper 6 is in a linear state. The positioning screw is used to lock the scraper 6 in a linear state.

[0043] like Figure 1 and 3 As shown, in a further preferred embodiment, a tie rod 16 is provided between two adjacent scraper blades 6. Both ends of the tie rod 16 penetrate the scraper blade 16, and each end of the tie rod 16 is provided with a high-strength nut 17 that is threaded into it. Since the adjacent scraper blades 6 are fixed and cannot rotate, that is, the gear 5 cannot rotate, thus achieving the locking of the scraper blades 6 in the unfolded state. The tie rod 16 can play the role of reinforcing support and locking the scraper blades 6.

[0044] like Figure 1-4 As shown, in a further preferred embodiment, the side support structure includes support arms 13, with support arms 13 fixedly installed on both sides of the support 1, and side positioning wheels 14 installed at the ends of the support arms 13. In use, the side positioning wheels 14 are positioned and contact the inner walls of the cleaning pipe section 18. This side support structure is simple in structure and easy to use.

[0045] like Figure 1-4 As shown, in a further preferred embodiment, the top support structure includes a telescopic structure and positioning wheels 11. The telescopic structure is fixedly installed at both ends of the top of the support 1, and the upper positioning wheel 11 is installed on the top of the telescopic structure. By adjusting the telescopic structure, the upper positioning wheel 11 can contact the top of the wall of the cleaning pipe section 18, allowing it to move along it and the side positioning wheel 14 can fit against the wall of the cleaning pipe section 18, thereby forming a triangular top support structure. This structure provides uniform force distribution and good stability, maintaining stability during dragging.

[0046] like Figure 1-4 As shown, in a further preferred embodiment, the telescopic structure comprises an upper positioning tube 9, a telescopic tube 10, and a locking bolt 11. The upper positioning tube 9 is fixedly installed on the top surface of the support 1, and the lower end of the telescopic rod 10 is located inside the upper positioning tube 9. The locking bolt 11 passes through the upper positioning tube 9 and is threadedly connected. By rotating the locking bolt 11, the position of the telescopic rod 10 can be adjusted and fixed. This telescopic structure is simple in structure and convenient to use and adjust.

[0047] like Figure 1-5As shown, the present invention also provides a pipeline dredging method applied to trenchless repair technology, employing a pipeline dredging device based on the above-mentioned trenchless repair technology, the steps of which include:

[0048] S1: Two winches 25 are used, and the two winches 25 are respectively set at the upstream inspection well and the downstream inspection point;

[0049] S2: The pipeline dredging device applied to trenchless repair technology is lowered from the upstream inspection well 20 and enters the dredging section 18;

[0050] S3: Connect the wire ropes 26 of the two winches 25 to the pipeline dredging device applied to trenchless repair technology after being guided by the guide wheel frame 23.

[0051] S4: Rotate the control lever 19 to extend the shear telescopic frame 3. During the extension process, the scraper 6 changes from a linear state to an unfolded state.

[0052] S5: Connect the tie rod 16 to the adjacent scraper;

[0053] S6: Start the right winch 25 and use the wire rope 26 to pull the pipeline dredging device applied to trenchless repair technology to move to the downstream inspection well 21 and scrape the sludge to the downstream inspection well 21.

[0054] S7: Remove the tie rod 16, rotate the control lever 19 in the opposite direction, retract the shear telescopic frame 3, and rotate the scraper 6 back to its initial linear shape;

[0055] S8: Start the left winch 25 and drag the pipeline dredging device applied to trenchless repair technology to the upstream inspection well (20) to bring the pipeline dredging device applied to trenchless repair technology to the upstream inspection well (20).

[0056] S9: Repeat S4 to S8 until the silt is cleaned up.

[0057] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0058] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A pipeline dredging method applied to trenchless repair technology, characterized in that, A pipeline dredging device for trenchless repair technology is adopted. The device includes a support (1), with one end of a steel wire rope (26) fixedly connected to both ends of the support (1), and the other end of the steel wire rope (26) fixedly connected to a winch (25). Several scrapers (6) are provided below the support (1), and an adjustment device for driving the scrapers (6) to rotate is provided on the support (1). A triangular support structure is provided on the support (1), which consists of two sets of side support structures and a top support structure. The adjustment device includes a long slot (2), which is opened on the support (1). A shear telescopic frame (3) is provided on the bottom surface of the support (1). One end of the shear telescopic frame (3) is hinged to the bottom surface of the support (1) by a pin. One end of the shear telescopic frame is connected to a control rod (19). A rotating shaft (4) is rotatably installed on some of the hinge points of the shear telescopic frame (3). The upper end of each rotating shaft (4) passes through the long slot (2) and is fixedly installed with a gear (5). The lower end of the rotating shaft (4) is fixedly connected to the corresponding scraper (6). A guide rail (7) is fixedly installed on the top surface of the support (1). The guide rail (7) is provided with several rack segments (8). The rack segments (8) mesh with the corresponding gears (5). A tie rod (16) is provided between two adjacent scrapers (6), with both ends of the tie rod (16) penetrating through the scraper (6), and a high-strength nut (17) threadedly engaged with the end of the tie rod (16). An angle iron (15) is fixedly welded to the top of the support (1), and a positioning screw is threaded onto the angle iron (15). The positioning screw can be inserted between the teeth of one of the gears (5). The method includes the following steps: S1: Two winches (25) are used, and the two winches (25) are respectively set at the upstream inspection well and the downstream inspection point; S2: The pipeline dredging device applied to trenchless repair technology is lowered from the upstream inspection well (20) and enters the... Cleaning section (18); S3: Connect the wire ropes (26) of the two winches (25) to the pipeline dredging device applied to trenchless repair technology after being guided by the guide wheel frame (23); S4: Rotate the control lever (19) to extend the shear telescopic frame (3). During the extension process, the scraper (6) changes from a linear state to an unfolded state. S5: Connect the tie rod (16) to the adjacent scraper; S6: Start the right winch (25) and pull the pipeline dredging device applied to trenchless repair technology to the downstream inspection well (21) via the steel wire rope (26) to scrape the sludge to the downstream inspection well (21). S7: Remove the tie rod (16), rotate the control lever (19) in the opposite direction, the shear telescopic frame (3) retracts, and the scraper (6) rotates back to its initial linear shape; S8: Start the left winch (25) and drag the pipeline dredging device applied to trenchless repair technology upstream for inspection. The well (20) moves, bringing the pipeline dredging device applied to trenchless repair technology to the upstream inspection well (20). S9: Repeat S4 to S8 until the silt is cleaned up.

2. The pipeline dredging method applied to trenchless repair technology according to claim 1, characterized in that, The side support structure includes a support arm (13), the support arm (13) is fixedly installed on both sides of the support (1), and the end of the support arm (13) is equipped with a side positioning wheel (14).

3. A pipeline dredging method applied to trenchless repair technology according to claim 2, characterized in that, The top support structure includes a telescopic structure and an upper positioning wheel (12). The telescopic structure is fixedly installed at the top end of the support (1), and the upper positioning wheel (12) is installed on the top of the telescopic structure.

4. A pipeline dredging method applied to trenchless repair technology according to claim 3, characterized in that, The telescopic structure consists of an upper positioning tube (9), a telescopic tube (10), and a locking bolt (11). The upper positioning tube (9) is fixedly installed on the top surface of the support (1). The lower end of the telescopic tube (10) is located inside the upper positioning tube (9). The locking bolt (11) passes through the upper positioning tube (9) and is threaded.

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