A dredging device for water conservancy projects

Abstract

This invention discloses a dredging device for water conservancy projects, comprising a high-pressure water pipe for dredging river channels and a high-pressure nozzle installed at one end of the high-pressure water pipe for impacting silt. A belt is provided on the outside of the high-pressure water pipe, with a first side plate and a second side plate on each side. A connecting plate, L-shaped, is provided on the outside of the second side plate. The end of the connecting plate furthest from the second side plate is located at the central axis of the belt and connected to a pressing and pulling mechanism. This dredging device for water conservancy projects is fixed to the worker's waist by the belt. On the one hand, the support mechanism on the belt provides support for the high-pressure water pipe, reducing the force exerted by the worker's hands on the pipe. On the other hand, the pressing and pulling mechanism on the other side of the belt not only presses down on the section of the pipe closest to the worker, preventing the high-pressure water pipe from veering due to its large impact force.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, specifically to a dredging device for water conservancy projects. Background Technology

[0002] my country's water conservancy projects have developed rapidly in recent years, laying the foundation for the country's economic development. Currently, with the progress of urbanization, river management in urban development is becoming increasingly crucial. A complete river management project requires a series of interconnected steps, from planning by relevant departments to river management, improvement of sewage treatment facilities, and the construction of a healthy river aquatic ecosystem. Therefore, effective river management projects can not only proactively resolve potential problems during the river management process but also promote sustainable social development and positively impact the protection of water resources and the ecological environment.

[0003] Many waterways accumulate a large amount of silt at the bottom over the years, which not only affects the function of the waterway but also detracts from its aesthetics. However, if this silt is properly treated, it can be beneficial to agricultural production and landscape construction.

[0004] In the process of clearing silt from river channels, two methods are typically used. One method involves using excavators for dredging. For narrower river channels, due to their slope and narrow bottom, manual dredging is usually employed. This involves a worker holding a high-pressure water hose, with one end connected to a high-pressure nozzle. During dredging, the worker aims the nozzle at the silt in the river channel. To prevent the hose from shifting, the worker also needs to use their feet to secure a section of the hose in the river. However, this method is problematic because the high-pressure water hose has a large diameter, and the high-pressure water flow inside creates a strong impact, making it difficult to secure. Furthermore, the hose's surface is smooth due to the large amount of silt adhering to it. When the worker steps on it, the hose may still move around in the silt, causing instability and distracting the worker, thus affecting the efficiency of the dredging process. Therefore, we propose a dredging device for water conservancy projects. Summary of the Invention

[0005] The purpose of this invention is to provide a dredging device for water conservancy projects to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dredging device for water conservancy projects, comprising a high-pressure water pipe for dredging river channels and a high-pressure nozzle installed at one end of the high-pressure water pipe for impacting silt. A waist belt is provided on the outside of the high-pressure water pipe, and a first side plate and a second side plate are respectively provided on both sides of the waist belt. The waist belt is fixed to the waist of the construction worker, and a support mechanism is provided on the outside of the first side plate to support the end of the high-pressure water pipe near the high-pressure nozzle.

[0007] The second side plate has a connecting plate on its outer side, and the connecting plate is L-shaped. The end of the connecting plate away from the second side plate is located at the central axis of the belt and is connected to a pressing and pulling mechanism. The pressing and pulling mechanism presses the high-pressure water pipe when it is in use and assists the staff in pulling it when the high-pressure water pipe is moved.

[0008] Preferably, the end of the connecting plate away from the second side plate is a circular end, and the pressing and pulling mechanism is connected to the circular end.

[0009] Preferably, the pressing and pulling mechanism includes an angle rotation mechanism disposed on a circular end, the angle rotation mechanism is connected to a positioning sleeve at the connecting end, and a telescopic sleeve is slidably connected inside the positioning sleeve, a pressing rod is slidably passed through one end of the telescopic sleeve, the telescopic sleeve is provided with a positioning bolt for positioning the extension and retraction length of the pressing rod, and the positioning sleeve is provided with a moving port for moving the positioning bolt.

[0010] The bottom end of the pressing rod is connected to a positioning mechanism for pressing the high-pressure water pipe;

[0011] The positioning sleeve has an opening, and a reciprocating pulling mechanism is provided at the opening. When the high-pressure water pipe moves, the reciprocating pulling mechanism drives the telescopic sleeve to move relative to the positioning sleeve and generates a certain impact force, so that the positioning mechanism assists in pulling the high-pressure water pipe.

[0012] The outer side of the positioning sleeve is also provided with a connecting mechanism for secondary guidance of the high-pressure water pipe. Through the provided pressing and pulling mechanism, the high-pressure water pipe is pressed, and at the same time, the high-pressure water pipe is pulled.

[0013] Preferably, the angle rotation mechanism includes a rotating shell mounted on a circular end, the rotating shell having a cavity inside, and a rotating ball rotatably connected inside the cavity. The cavity also has an arc-shaped groove for guiding the rotating ball, and a guide block is slidably connected to the arc-shaped groove. The guide block is fixedly connected to the rotating ball.

[0014] The rotating ball is disposed through the cavity, and the positioning sleeve is fixedly connected to the outside of the rotating ball;

[0015] The rotating shell is threaded with a limiting bolt for positioning the rotating ball. The angle rotation mechanism allows for adjustment of the support angle of the positioning sleeve.

[0016] Preferably, the positioning mechanism includes a first hinge support hinged to the bottom end of the pressing rod by a pin, and a pusher plate is fixedly connected to the bottom end of the first hinge support. The pusher plate is provided with a groove, and a bidirectional threaded screw is rotatably connected inside the groove. A handle is connected to one end of the bidirectional threaded screw located on the outside of the pusher plate.

[0017] The bidirectional threaded screw has two positioning blocks connected to its outer thread. Both positioning blocks slide through the groove and are connected to an arc-shaped clamping plate at the top. Through the positioning mechanism, the high-pressure water pipe is pressed.

[0018] Preferably, the reciprocating pulling mechanism includes a gear rack disposed at the opening, and the gear rack is fixedly installed on the outside of the telescopic sleeve. A half gear is provided on the outside of the gear rack, and a driving mechanism for driving the half gear is provided on the positioning sleeve. Through the provided reciprocating pulling mechanism, the pressing rod can be used to reciprocate the high-pressure water pipe.

[0019] Preferably, the driving mechanism includes a fixed plate disposed on the positioning sleeve and located outside the opening, a driving motor is mounted on the fixed plate, and a limiting shaft is fixedly connected to one side of the output end of the driving motor passing through the fixed plate. The output end of the driving motor is rotatably connected to the fixed plate, and a disc is fixedly connected to one end of the limiting shaft away from the driving motor, and a surrounding shaft is fixedly connected to one side of the disc.

[0020] A U-shaped plate is slidably sleeved on the outer side of the surrounding shaft, and the U-shaped plate is fixedly connected to the half gear. A connecting shaft is fixedly connected to the center of the half gear shaft, and the connecting shaft is rotatably connected to the fixed plate through a bearing. Through the provided driving mechanism, the half gear can be driven.

[0021] Preferably, the connecting mechanism includes a connecting seat disposed on the outside of the positioning sleeve, the connecting seat being rotatably connected to a rotating shaft, and the connecting seat being provided with a limiting mechanism for positioning the rotating shaft;

[0022] A connecting sleeve is fixedly connected to the outside of the rotating shaft, and a buffer spring is fixedly connected inside the connecting sleeve. A buffer rod is fixedly connected to one end of the buffer spring. The buffer rod slides through the connecting sleeve, and a clamping mechanism for clamping the high-pressure water pipe is connected to one end located outside the connecting sleeve. Through the provided connecting mechanism, the high-pressure water pipe is given a secondary guiding effect.

[0023] Preferably, the support mechanism includes a fixed shell disposed on the outside of the first side plate, and one end of the fixed shell is rotatably connected to a support shaft, and the fixed shell is provided with a locking mechanism for positioning the support shaft;

[0024] The support shaft is equipped with a clamping mechanism at one end located on the outside of the fixed shell to support the high-pressure water pipe. The support mechanism can support the high-pressure water pipe that is close to the worker's hand.

[0025] Preferably, the positioning sleeve is provided with a rotating sleeve on the outside, and the connecting seat is fixedly installed on the outside of the rotating sleeve;

[0026] A worm gear is fixedly connected to the outside of the rotating sleeve, and a worm is meshed with the outside of the worm gear. Two support plates are provided on the outside of the positioning sleeve to support the worm, and a handle is connected to one end of the worm located outside one of the support plates. Through the provided rotating sleeve, the clamping angle of the clamping mechanism can be adjusted according to the position of the high-pressure water pipe.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. When using this invention, the waist belt is first fixed to the worker's waist. On the one hand, the support mechanism on the waist belt provides support for the high-pressure water pipe, reducing the force exerted by the worker's hands on the pipe. On the other hand, the pressing and pulling mechanism on the other side of the waist belt not only presses down on the section of the pipe closest to the worker to prevent the high-pressure water pipe from veering due to its large impact force, but also assists in pulling the pipe during the worker's movement to clean the river channel, thereby effectively improving the efficiency of river dredging.

[0029] 2. The present invention provides a first side plate and a second side plate on the waist belt, and provides a support mechanism and a pressing and pulling mechanism on the first side plate and the second side plate respectively, thereby effectively balancing the support force of the waist belt and making it easy for manual wearing and use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a top view of the belt structure of the present invention;

[0032] Figure 3 This is a side view of the belt structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the connecting plate structure of the present invention;

[0034] Figure 5This is an exploded view of the reciprocating pulling mechanism of the present invention;

[0035] Figure 6 This is a schematic diagram of the internal structure of the connecting sleeve of the present invention.

[0036] In the diagram: 1-High-pressure water pipe; 11-High-pressure nozzle; 2-Waist belt; 21-First side plate; 22-Second side plate; 3-Support mechanism; 31-Fixed shell; 32-Support shaft; 33-Locking mechanism; 34-Clamping mechanism; 4-Connecting plate; 5-Pressing and pulling mechanism; 51-Rotating ball; 52-Angle rotation mechanism; 53-Positioning sleeve; 531-Opening; 54-Telescopic sleeve; 55-Pressing rod; 56-Positioning mechanism; 561-First hinge support; 562-Push mud plate; 563-Groove; 564-Double threaded screw; 565-Handle; 566-Positioning block; 567-Arc-shaped clamping plate; 57-Connection Mechanism; 571-Connecting seat; 572-Rotating shaft; 573-Limiting mechanism; 574-Connecting sleeve; 575-Buffer spring; 576-Buffer rod; 577-Clamping mechanism; 58-Rotating shell; 581-Cavity; 582-Arc groove; 583-Limiting bolt; 6-Reciprocating pulling mechanism; 61-Gear rack; 62-Half gear; 63-Drive mechanism; 631-Fixing plate; 632-Drive motor; 633-Limiting shaft; 634-Disc; 635-Circling shaft; 636-U-shaped plate; 637-Connecting shaft; 7-Rotating sleeve; 71-Worm gear; 72-Worm; 73-Support plate; 74-Handle. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1-6This invention provides a technical solution: a dredging device for water conservancy projects, including a high-pressure water pipe 1 for dredging river channels and a high-pressure nozzle 11 installed at one end of the high-pressure water pipe 1 for impacting silt. The high-pressure water pipe 1 is provided with a waist belt 2 on the outside. The waist belt 2 is an existing type that can be relatively fixed to the waist of the worker. The tightness of the waist belt 2 can be adjusted according to the different waist sizes of different workers. In order to make the waist belt 2 more stable, the waist belt 2 can also be provided with shoulder straps, thereby reducing the support force on the waist of the worker. The waist belt 2 is provided with a first side plate 21 and a second side plate 22 on both sides respectively. The side of the first side plate 21 and the second side plate 22 near the waist of the worker can also be provided with protective sponge. The waist belt 2 is fixed to the waist of the construction worker. The first side plate 21 is provided with a support mechanism 3 on the outside for supporting the end of the high-pressure water pipe 1 near the high-pressure nozzle 11.

[0039] The support mechanism 3 includes a fixed shell 31 disposed on the outside of the first side plate 21, and a support shaft 32 is rotatably connected to one end of the fixed shell 31. The fixed shell 31 is provided with a locking mechanism 33 for positioning the support shaft 32. The locking mechanism 33 is an existing mechanism that can fix the support shaft 32 relative to the fixed shell 31 after rotation, preferably a locking bolt.

[0040] The support shaft 32 is equipped with a clamping mechanism 34 for supporting the high-pressure water pipe 1 at one end located outside the fixed shell 31. The clamping mechanism 34 is an existing mechanism that can adjust and fix pipes of different diameters, so it will not be described in detail.

[0041] A connecting plate 4 is provided on the outer side of the second side plate 22, and the connecting plate 4 is L-shaped. The end of the connecting plate 4 near the second side plate 22 is rotatably disposed relative to the second side plate 22. At the same time, the second side plate 22 is also provided with a fixing mechanism for fixing the connecting plate 4 after rotation adjustment, so that the connecting plate 4 and the waist belt 2 can rotate, making it convenient for the staff to wear the waist belt 2. The end of the connecting plate 4 away from the second side plate 22 is located at the central axis of the waist belt 2 and is connected to a pressing and pulling mechanism 5. The pressing and pulling mechanism 5 presses the high-pressure water pipe 1 when it is in use, and assists the staff to pull it when the high-pressure water pipe 1 is moved.

[0042] The end of the connecting plate 4 away from the second side plate 22 is a circular end, and the pressing and pulling mechanism 5 is connected to the circular end. The pressing and pulling mechanism 5 includes an angle rotation mechanism 52 disposed on the circular end, and a positioning sleeve 53 is connected to the connecting end of the angle rotation mechanism 52.

[0043] The angle rotation mechanism 52 includes a rotating shell 58 mounted on a circular end. The rotating shell 58 has a cavity 581 inside, and a rotating ball 51 is rotatably connected inside the cavity 581. The cavity 581 also has an arc-shaped groove 582 for guiding the rotating ball 51, and a guide block is slidably connected to the arc-shaped groove 582. The guide block is fixedly connected to the rotating ball 51.

[0044] The rotating ball 51 is disposed through the cavity 581, and the positioning sleeve 53 is fixedly connected to the outside of the rotating ball 51;

[0045] The rotating shell 58 is threaded with a limiting bolt 583 for positioning the rotating ball 51;

[0046] The staff can adjust the positioning sleeve 53 according to the position that the high-pressure water pipe 1 needs to be pressed on the silt. The positioning sleeve 53 rotates inside the cavity 581 by rotating the ball 51 to adjust its support angle. Then, the positioning ball can be positioned by the positioning bolt.

[0047] Furthermore, a telescopic sleeve 54 is slidably connected inside the positioning sleeve 53. A pressing rod 55 is slidably passed through one end of the telescopic sleeve 54. The telescopic sleeve 54 is provided with a positioning bolt for positioning the telescopic length of the pressing rod 55, and the positioning sleeve 53 is provided with a moving port for moving the positioning bolt.

[0048] The bottom end of the pressing rod 55 is connected to a positioning mechanism 56 for pressing the high-pressure water pipe 1. The positioning mechanism 56 includes a first hinge support 561 hinged to the bottom end of the pressing rod 55 by a pin, and a mud pusher 562 is fixedly connected to the bottom end of the first hinge support 561. Both ends of the mud pusher 562 are arc-shaped, and the two arc-shaped ends are triangular, so that when the mud pusher 562 slides on the silt, it will not be blocked by the relatively protruding silt in front or behind, which facilitates the pulling of the water pipe. The mud pusher 562 is provided with a groove 563, and a bidirectional threaded screw 564 is rotatably connected inside the groove 563. The end of the bidirectional threaded screw 564 located on the outside of the mud pusher 562 is connected to a handle 565.

[0049] The bidirectional threaded screw 564 is threaded with two positioning blocks 566 on its outer side. Both positioning blocks 566 slide through the groove 563 and are connected to an arc-shaped clamping plate 567 at their top. When it is necessary to fix the high-pressure water pipe 1, the handle 565 is manually turned to make the bidirectional threaded screw 564 rotate inside the groove 563. At the same time, the rotation provides driving force in opposite directions to the two positioning blocks 566. Due to the limiting effect of the groove 563, the two positioning blocks 566 drive the two arc-shaped clamping plates 567 to move in opposite directions until the high-pressure water pipe 1 is clamped and fixed.

[0050] The outer side of the positioning sleeve 53 is also provided with a connecting mechanism 57 for secondary guidance of the high-pressure water pipe 1. The connecting mechanism 57 includes a connecting seat 571 provided on the outer side of the positioning sleeve 53. The connecting seat 571 is rotatably connected to a rotating shaft 572. The connecting seat 571 is provided with a limiting mechanism 573 for positioning the rotating shaft 572. The limiting mechanism 573 is a slot provided at one end of the rotating shaft 572. At the same time, an external threaded sleeve is fitted on the outer side of the rotating shaft 572. An internal threaded sleeve is threadedly connected to the outer side of the external threaded sleeve, and an abutting block that abuts against the slot is fixedly connected inside the internal threaded sleeve. Thus, when the connecting sleeve 574 is adjusted to the required rotation angle under the support of the rotating shaft 572, the rotating shaft 572 is fixed relative to the connecting seat 571 by tightening the internal threaded sleeve.

[0051] A connecting sleeve 574 is fixedly connected to the outside of the rotating shaft 572, and a buffer spring 575 is fixedly connected inside the connecting sleeve 574. A buffer rod 576 is fixedly connected to one end of the buffer spring 575. The buffer rod 576 slides through the connecting sleeve 574, and a clamping mechanism 577 for clamping the high-pressure water pipe 1 is connected to one end of the connecting sleeve 574. The clamping mechanism 577 is an existing mechanism that can clamp the high-pressure water pipe 1, so it will not be described in detail. A rotating sleeve 7 is provided on the outside of the positioning sleeve 53, and the connecting seat 571 is fixedly installed on the outside of the rotating sleeve 7.

[0052] The rotating sleeve 7 is fixedly connected to the outer side of a worm gear 71, and a worm 72 is meshed with the outer side of the worm gear 71. The worm 72 has a self-locking force on the worm gear 71, thereby preventing the rotating sleeve 7 from rotating. The positioning sleeve 53 is provided with two support plates 73 on the outer side to support the worm 72, and a handle 74 is connected to one end of the worm 72 located on the outer side of one of the support plates 73.

[0053] When manual cleaning of river silt is required, the worker first puts on the belt 2 around their waist, with the first side plate 21 and the second side plate 22 positioned on either side of the worker's waist. Then, based on the position of the high-pressure water pipe 1, one section of the high-pressure water pipe 1 is fixed above the silt and close to the worker's feet using two arc-shaped clamping plates 567. Next, the connecting sleeve 574 is adjusted so that it is offset relative to the worker's body position to prevent the high-pressure water pipe 1 from touching the worker's body and affecting the worker's operation. That is, the clamping mechanism 577 on the connecting sleeve 574 and the two arc-shaped clamping plates 567 are at a certain angle. Then, the high-pressure water pipe 1 near the worker's hand is supported and fixed by the support mechanism 3. At this point, the worker can hold the high-pressure water pipe 1 to carry out the operation.

[0054] The positioning sleeve 53 is provided with an opening 531, and a reciprocating pulling mechanism 6 is provided at the opening 531. When the high-pressure water pipe 1 moves, the reciprocating pulling mechanism 6 drives the telescopic sleeve 54 to move relative to the positioning sleeve 53 and generates a certain impact force, so that the positioning mechanism 56 assists in pulling the high-pressure water pipe 1.

[0055] The reciprocating pulling mechanism 6 includes a gear rack 61 disposed at the opening 531, and the gear rack 61 is fixedly installed on the outside of the telescopic sleeve 54. A half gear 62 is provided on the outside of the gear rack 61. A drive mechanism 63 for driving the half gear 62 is provided on the positioning sleeve 53. The drive mechanism 63 includes a fixed plate 631 disposed on the positioning sleeve 53 and located outside the opening 531. A drive motor 632 is mounted on the fixed plate 631, and a limit shaft 633 is fixedly connected to one side of the output end of the drive motor 632 that passes through the fixed plate 631. The output end of the drive motor 632 is rotatably connected to the fixed plate 631. A disc 634 is fixedly connected to one end of the limit shaft 633 away from the drive motor 632, and a surrounding shaft 635 is fixedly connected to one side of the disc 634.

[0056] A U-shaped plate 636 is slidably sleeved on the outer side of the surrounding shaft 635, and the U-shaped plate 636 is fixedly connected to the half gear 62. A connecting shaft 637 is fixedly connected at the center of the half gear 62, and the connecting shaft 637 is rotatably connected to the fixed plate 631 through a bearing.

[0057] When staff need to move forward along the river, the drive motor 632 rotates, causing the limiting plate to rotate the disc 634 relative to the fixed plate 631. At the same time, the surrounding shaft 635 causes the U-shaped plate 636 to swing synchronously. As the U-shaped plate 636 swings, the half gear 62 meshes with the gear rack 61, thus reciprocatingly pushing the telescopic sleeve 54 to move telescopically relative to the positioning sleeve 53. During the reciprocating movement of the telescopic sleeve 54, the high-pressure water pipe 1 at the bottom of the pressing rod 55 is subjected to tension and inertia generated by the reciprocating movement, which pulls the high-pressure water pipe 1 to a certain length. When the high-pressure water pipe 1 is pulled by inertia, the buffer spring 575 inside the connecting sleeve 574 extends and retracts synchronously, thereby preventing the high-pressure water pipe 1 from bending.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dredging device for water conservancy projects, comprising a high-pressure water pipe (1) for dredging river channels and a high-pressure nozzle (11) disposed at one end of the high-pressure water pipe (1) for impacting silt, characterized in that: The high-pressure water pipe (1) is provided with a waist belt (2) on the outside, and the waist belt (2) is provided with a first side plate (21) and a second side plate (22) on both sides respectively. The waist belt (2) is fixed to the waist of the construction worker, and the first side plate (21) is provided with a support mechanism (3) to support the end of the high-pressure water pipe (1) near the high-pressure nozzle (11). The second side plate (22) is provided with a connecting plate (4) on the outside, and the connecting plate (4) is L-shaped. The end of the connecting plate (4) away from the second side plate (22) is located at the central axis of the waist belt (2) and is connected to a pressing and pulling mechanism (5). When the high-pressure water pipe (1) is in use, the pressing and pulling mechanism (5) presses the high-pressure water pipe (1) and assists the staff in pulling when the high-pressure water pipe (1) moves. The end of the connecting plate (4) away from the second side plate (22) is a circular end, and the pressing and pulling mechanism (5) is connected to the circular end; The pressing and pulling mechanism (5) includes an angle rotation mechanism (52) set on the circular end. The angle rotation mechanism (52) is connected to a positioning sleeve (53) at its connecting end. A telescopic sleeve (54) is slidably connected inside the positioning sleeve (53). A pressing rod (55) is slidably passed through one end of the telescopic sleeve (54). A positioning bolt is provided on the telescopic sleeve (54) to position the extension and retraction length of the pressing rod (55). A moving port for moving the positioning bolt is provided on the positioning sleeve (53). The bottom end of the pressing rod (55) is connected to a positioning mechanism (56) for pressing the high-pressure water pipe (1); The positioning sleeve (53) is provided with an opening (531), and a reciprocating pulling mechanism (6) is provided at the opening (531). When the high-pressure water pipe (1) moves, the reciprocating pulling mechanism (6) drives the telescopic sleeve (54) to move relative to the positioning sleeve (53) and generates a certain impact force, so that the positioning mechanism (56) assists in pulling the high-pressure water pipe (1). The outer side of the positioning sleeve (53) is also provided with a connecting mechanism (57) for secondary guidance of the high-pressure water pipe (1); The positioning mechanism (56) includes a first hinge support (561) hinged to the bottom end of the pressing rod (55) by a pin, and a pusher plate (562) is fixedly connected to the bottom end of the first hinge support (561). The pusher plate (562) is provided with a groove (563), and a bidirectional threaded screw (564) is rotatably connected inside the groove (563). A handle (565) is connected to one end of the bidirectional threaded screw (564) located outside the pusher plate (562). The bidirectional threaded screw (564) has two positioning blocks (566) threadedly connected to its outer side. Both positioning blocks (566) slide through the groove (563) and are connected to an arc-shaped clamping plate (567) at their top.

2. The dredging device for water conservancy projects according to claim 1, characterized in that: The angle rotation mechanism (52) includes a rotating shell (58) mounted on a circular end. The rotating shell (58) has a cavity (581) inside, and a rotating ball (51) is rotatably connected inside the cavity (581). The cavity (581) also has an arc-shaped groove (582) for guiding the rotating ball (51), and a guide block is slidably connected at the arc-shaped groove (582). The guide block is fixedly connected to the rotating ball (51). The rotating ball (51) is disposed through the cavity (581), and the positioning sleeve (53) is fixedly connected to the outside of the rotating ball (51); The rotating shell (58) is threaded with a limiting bolt (583) for positioning the rotating ball (51).

3. The dredging device for water conservancy projects according to claim 1, characterized in that: The reciprocating pulling mechanism (6) includes a gear rack (61) disposed at the opening (531), and the gear rack (61) is fixedly installed on the outside of the telescopic sleeve (54). A half gear (62) is provided on the outside of the gear rack (61), and a driving mechanism (63) for driving the half gear (62) is provided on the positioning sleeve (53).

4. A dredging device for water conservancy projects according to claim 3, characterized in that: The drive mechanism (63) includes a fixed plate (631) disposed on the positioning sleeve (53) and located outside the opening (531). A drive motor (632) is mounted on the fixed plate (631), and a limit shaft (633) is fixedly connected to one side of the drive motor (632) through the fixed plate (631). The output end of the drive motor (632) is rotatably connected to the fixed plate (631). A disc (634) is fixedly connected to one end of the limit shaft (633) away from the drive motor (632), and a surrounding shaft (635) is fixedly connected to one side of the disc (634). A U-shaped plate (636) is slidably sleeved on the outside of the surrounding shaft (635), and the U-shaped plate (636) is fixedly connected to the half gear (62). A connecting shaft (637) is fixedly connected at the center of the half gear (62), and the connecting shaft (637) is rotatably connected to the fixed plate (631) through a bearing.

5. A dredging device for water conservancy projects according to claim 1, characterized in that: The connecting mechanism (57) includes a connecting seat (571) disposed on the outside of the positioning sleeve (53), the connecting seat (571) is rotatably connected to a rotating shaft (572), and the connecting seat (571) is provided with a limiting mechanism (573) for positioning the rotating shaft (572); A connecting sleeve (574) is fixedly connected to the outside of the rotating shaft (572), and a buffer spring (575) is fixedly connected inside the connecting sleeve (574). A buffer rod (576) is fixedly connected to one end of the buffer spring (575). The buffer rod (576) slides through the connecting sleeve (574), and a clamping mechanism (577) for clamping the high-pressure water pipe (1) is connected to one end located outside the connecting sleeve (574).

6. A dredging device for water conservancy projects according to claim 1, characterized in that: The support mechanism (3) includes a fixed shell (31) disposed on the outside of the first side plate (21), and a support shaft (32) is rotatably connected to one end of the fixed shell (31). The fixed shell (31) is provided with a locking mechanism (33) for positioning the support shaft (32). The support shaft (32) is equipped with a clamping mechanism (34) for supporting the high-pressure water pipe (1) at one end located outside the fixed shell (31).

7. A dredging device for water conservancy projects according to claim 5, characterized in that: The positioning sleeve (53) is provided with a rotating sleeve (7) on the outside, and the connecting seat (571) is fixedly installed on the outside of the rotating sleeve (7); The rotating sleeve (7) is fixedly connected to a worm gear (71) on the outside, and a worm (72) is meshed with the outside of the worm gear (71). The positioning sleeve (53) is provided with two support plates (73) on the outside to support the worm (72), and a handle (74) is connected to one end of the worm (72) located outside one of the support plates (73).

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