Pipe culvert cleaning device and method

Abstract

The invention discloses a pipe culvert cleaning device and method. The technical problem that special cleaning equipment for a special structure of a pipe culvert is lacked in the prior art is solved. The device comprises a vehicle body and a portal on the vehicle body, and a swing mechanism is arranged at the top of the portal and connected with a movable arm and a raking head; the scraper conveying mechanism is connected with the portal through a square sliding shell, and the front end is connected with the bucket device; crawler walking mechanisms are arranged on the two sides of the vehicle body. The method comprises the following steps: adjusting the positions of a movable arm and a raking head; adjusting the terrain clearance of the bucket device; changing the width and inclination angle of the crawler walking mechanism; the raking head is driven to loosen accumulated soil, and the accumulated soil is collected through the bucket device and conveyed backwards through the scraper conveying mechanism. The adjustable crawler belt mechanism adapts to pipe culverts with different section shapes, and efficient and continuous operation is achieved.

Description

Technical Field

[0001] This invention relates to the field of culvert cleaning, and specifically to a culvert cleaning device and method. Background Technology

[0002] Underground tubular structures such as culverts, municipal pipelines, and water conveyance tunnels are prone to accumulating silt, gravel, and other debris at their bottoms due to water erosion, soil migration, and surface sediment intrusion during long-term operation. This reduces the cross-sectional area for water flow and decreases drainage capacity, potentially leading to pipe blockage, flooding, and structural damage. Therefore, regular cleaning of accumulated soil is crucial to ensuring the functionality of pipelines.

[0003] Currently, culvert cleaning mainly relies on the following methods: First, manual cleaning, but this has problems such as high labor intensity, low efficiency, and harsh working environment (such as confined space and risk of toxic gases); Second, the use of general-purpose machinery such as small excavators or loaders, but their structure is fixed, their adaptability is poor, it is difficult to work flexibly in circular or rectangular culverts, and their functions are limited and their passage is insufficient; Third, high-pressure water jet flushing or vacuum suction technology, although these methods are suitable for fine sand or sludge deposits, they are not effective in cleaning compacted clay, mixed soil containing stones or garbage, and require large-scale water sources, sewage treatment equipment and transport vehicles, which are costly, have complex operation processes, and are applicable to limited scenarios.

[0004] In summary, current technologies lack a highly efficient, specialized cleaning device that can simultaneously adapt to the unique structures of both circular and rectangular culverts, integrating functions such as loosening, collecting, conveying, and obstacle avoidance. There is an urgent need to develop a highly adaptable soil sweeping vehicle with adjustable track width, variable bucket shape, and other features to address the technical challenges of low cleaning efficiency, high cost, and insufficient adaptability. Summary of the Invention

[0005] The purpose of this invention is to provide a culvert cleaning device and method to overcome the technical problem of the lack of a dedicated cleaning device for the special structure of culverts in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a culvert cleaning device, comprising a vehicle body and a gantry fixedly connected to the vehicle body, wherein a slewing mechanism is provided on the top of the gantry; a boom, one end of which is connected to the top of the slewing mechanism and the other end of which is connected to a rake head; a scraper conveying mechanism, which is connected to the gantry via a square sliding shell, wherein a bucket device is connected to the front end of the scraper conveying mechanism; tracked walking mechanisms are provided on both sides of the vehicle body, and a track telescopic mechanism is provided at the bottom of the vehicle body, wherein the track telescopic mechanism is connected to the tracked walking mechanisms on both sides of the vehicle body.

[0007] The track telescopic mechanism is connected to the vehicle body via an adjusting screw. The adjusting screw is equipped with a screw slider, which is connected to the track traveling mechanism via a scissor linkage mechanism.

[0008] The slewing mechanism includes a slewing bearing fixed to the gantry, a connecting plate mounted on the slewing bearing, and a boom connecting lug on the connecting plate.

[0009] The scraper conveying mechanism includes a support pipe, a spiral working head located at the front end of the support pipe, and multiple scrapers located around the support pipe and driven by a chain.

[0010] The spiral working head includes a roller and spiral blades connected to the outer surface of the roller. The spiral direction of the spiral blades is set to make the material converge towards the center.

[0011] The bucket device includes a bucket body, a bottom plate slot welded to the bottom of the bucket body, and a bottom plate installed between the bucket body and the bottom plate slot.

[0012] The boom is connected to the gantry via the boom cylinder, and the bucket assembly is connected to the gantry via the bucket cylinder.

[0013] Secondly, the present invention also provides a method for cleaning culverts, based on the aforementioned culvert cleaning device, comprising: adjusting the position of the boom and the rake head according to the culvert to be cleaned; adjusting the position of the scraper conveying mechanism to adjust the ground clearance of the bucket device; changing the width and tilt angle of the track traveling mechanism through the track telescopic mechanism; driving the rake head to rotate and loosen the accumulated soil, collecting the accumulated soil through the bucket device, and conveying the accumulated soil backward through the scraper conveying mechanism.

[0014] Adjusting the boom and rake head positions according to the culvert to be cleaned includes: the boom is connected to the gantry via a boom cylinder; by adjusting the boom cylinder, the positions of the rake head and boom are adjusted so that they can enter the culvert without colliding with the inner wall of the culvert.

[0015] Adjusting the position of the scraper conveyor mechanism adjusts the ground clearance of the bucket device, including: the bucket device is connected to the gantry via a bucket cylinder, and the height of the front end of the scraper conveyor mechanism and the height of the bucket device are changed by adjusting the bucket cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: Firstly, this invention provides a culvert cleaning device. A stable main frame is formed by a vehicle body and a gantry fixedly connected to it, providing a reliable installation foundation for each functional component. A slewing mechanism at the top of the gantry connects to the boom, enabling the rake head at the boom end to rotate horizontally, effectively expanding the cleaning range of a single operation. A scraper conveying mechanism forms an adjustable connection with the gantry via a square sliding shell. The bucket device connected at the front works in conjunction with the conveying mechanism to achieve continuous collection and conveying of accumulated soil. Tracked walking mechanisms on both sides of the vehicle body cooperate with a track telescopic mechanism at the bottom. By adjusting the width and tilt angle of the tracked walking mechanisms, the device can stably adapt to the working environment of culverts with different cross-sectional shapes. All components form an organic whole through the above-mentioned connections, achieving efficient cleaning of accumulated soil in complex culvert environments, significantly improving operational efficiency and adaptability.

[0017] Secondly, this invention also provides a method for cleaning culverts, based on the aforementioned culvert cleaning device. By adjusting the position of the boom and the loosening head according to the specific shape and size of the culvert to be cleaned, the loosening device can precisely adapt to different working conditions. Adjusting the position of the scraper conveying mechanism regulates the ground clearance of the bucket device, ensuring the optimal working distance between the bucket device and the bottom of the culvert, effectively collecting accumulated soil while avoiding interference. Operating the track telescopic mechanism changes the width and tilt angle of the track traveling mechanism, allowing the entire device to stably adapt to the inner wall contours of culverts with different cross-sectional shapes, such as circular and rectangular. Driving the loosening head to rotate loosens the accumulated soil, collecting the loosened soil through the bucket device, and then continuously conveying the soil backward through the scraper conveying mechanism—these three steps form a complete soil treatment production line. The steps cooperate and work together, achieving fully mechanized operation from positioning and adjustment, soil loosening to collection and transportation, significantly improving the efficiency and quality of culvert cleaning while reducing manual labor intensity and safety risks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a culvert cleaning device according to an embodiment of the present invention.

[0019] Figure 2 This is a side view of a culvert cleaning device according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the bottom structure in an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the track telescopic mechanism in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the rotary mechanism in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the scraper conveying mechanism in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the spiral working head of the scraper conveying mechanism in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the bucket device in an embodiment of the present invention.

[0026] Figure 9 This is a flowchart of a culvert cleaning method according to an embodiment of the present invention.

[0027] In the diagram, 1. Rake head; 2. Boom; 3. Slewing mechanism; 31. Boom connecting lug; 32. Lug bracket; 33. Connecting plate; 34. Slewing bearing; 35. Boom cylinder connecting lug; 4. Gantry; 5. Motor drive shaft; 6. Scraper conveying mechanism; 61. Spiral working head; 611. Spiral blade; 612. Connecting roller; 613. Roller; 614. Sprocket; 62. Scraper; 63. Bearing support; 64. Rectangular tube support wing; 65. Rectangular support tube; 6 6. Chain; 7. Drive hydraulic station; 8. Track walking mechanism; 9. Bucket assembly; 91. Bucket ear plate; 92. Bucket body; 93. Bottom plate slot; 94. Bottom plate; 10. Bucket cylinder; 11. Boom cylinder; 12. Square sliding housing; 13. Connecting rod; 14. Vehicle body; 15. Track telescopic mechanism; 151. Screw slider; 152. First scissor linkage; 153. Second scissor linkage; 154. Slider connecting ear plate; 16. Hinge connector; 17. Adjusting screw. Detailed Implementation

[0028] Cleaning accumulated soil at the bottom of culverts has always been a serious challenge in maintenance work. Currently, manual cleaning methods are inefficient and pose safety hazards; using general-purpose construction machinery such as small excavators or loaders suffers from poor adaptability and maneuverability; while high-pressure water jets or vacuum suction technology are suitable for specific types of silt, they are ineffective for compacted clay or mixed soil containing impurities, and are complex and costly. Therefore, existing technologies struggle to provide a dedicated cleaning solution that can efficiently adapt to the unique structures of both circular and rectangular culverts, integrating loosening, collection, and conveying functions.

[0029] Based on the above background, this invention proposes a culvert cleaning device and method. Through the cooperation of an adjustable tracked walking mechanism 8 and a bucket device 9 with a replaceable bottom plate, the equipment can adapt to the special structures of both circular and rectangular culverts. Specifically, the track extension mechanism 15 adjusts the walking posture by changing the width and inclination angle of the tracked walking mechanism 8; the bucket device 9 conforms to different pipe walls by changing the bottom plate 94 of different shapes; and the integrated rake head 1 and scraper conveying mechanism 6 realize continuous loosening, collection, and conveying of accumulated soil, effectively improving cleaning efficiency and adaptability.

[0030] 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.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0034] Reference Figures 1 to 3As shown, this is a specific embodiment of the culvert cleaning device provided by the present invention, which includes: a vehicle body 14 and a gantry 4 fixedly connected to the vehicle body 14, and a rotating mechanism 3 is provided on the top of the gantry 4. The boom 2 is connected to the top of the slewing mechanism 3 at one end and to the rake head 1 at the other end; The scraper conveyor mechanism 6 is connected to the gantry 4 via a square sliding shell 12, and a bucket device 9 is connected to the front end of the scraper conveyor mechanism 6. The vehicle body 14 is provided with tracked walking mechanisms 8 on both sides and tracked telescopic mechanisms 15 at the bottom of the vehicle body 14. The tracked telescopic mechanisms 15 are connected to the tracked walking mechanisms 8 on both sides of the vehicle body 14.

[0035] In this specific implementation method, refer to Figure 3 As shown, the vehicle body 14 serves as the basic support platform for the entire sweeping device, providing the mounting base for various functional components. The gantry 4, fixedly connected to the vehicle body 14, constitutes the core support structure of the device. Figure 1 As shown, its vertical arrangement not only provides sufficient installation space but also ensures the stability of the upper mechanism. The slewing mechanism 3, located at the top of the gantry 4, enables the boom 2 to rotate horizontally, allowing the rake head 1, installed at the end of the boom 2, to swing within a certain angle range, thereby expanding the cleaning range.

[0036] Reference Figure 2 As shown, the scraper conveying mechanism 6 is connected to the gantry 4 via a square sliding shell 12. This connection method ensures a reliable connection between the scraper conveying mechanism 6 and the gantry 4, and also allows the scraper conveying mechanism 6 to adjust its working posture within a certain angle range. The bucket device 9 connected to the front end of the scraper conveying mechanism 6 forms a continuous material transfer path with the scraper conveying mechanism 6, ensuring the continuity of the process from soil collection to conveying.

[0037] The tracked walking mechanisms 8, located on both sides of the vehicle body 14, provide the device with the ability to move within the culvert, and their symmetrical arrangement ensures walking stability. The track telescopic mechanism 15, located at the bottom of the vehicle body 14, is connected to the tracked walking mechanisms 8 on both sides. By changing the lateral spacing and grounding angle of the tracked walking mechanisms 8, the device can adapt to the working environment of culverts with different cross-sectional shapes.

[0038] The various components form an organic whole through specific connections: the fixed connection between the gantry 4 and the vehicle body 14 ensures the rigidity of the overall structure; the cooperation between the slewing mechanism 3 and the gantry 4 enables the orientation adjustment of the working mechanism; the scraper conveying mechanism 6, connected to the gantry 4 through the square sliding shell 12, ensures both support strength and allows for necessary working angle adjustments; the cooperation between the track telescopic mechanism 15 and the track walking mechanism 8 gives the device terrain adaptability. These components cooperate and work together to achieve efficient soil removal operations inside circular and rectangular culverts.

[0039] In another specific embodiment of the present invention, the culvert cleaning device includes a rake head 1, a boom 2, a slewing mechanism 3, a gantry 4, a motor drive shaft 5, a scraper conveying mechanism 6, a drive hydraulic station 7, a track walking mechanism 8, a track telescopic mechanism 15, a hinged connector 16, a bucket device 9, a vehicle body 14, a boom cylinder 11, a bucket cylinder 10, a square sliding shell 12, and a connecting rod 13.

[0040] Reference Figure 1 As shown, the loosening head 1 is a hollow cylindrical tube with multiple loosening teeth welded to its outer surface. The loosening teeth are spirally distributed on the outer surface of the cylindrical tube, which causes the loosened material to tend to concentrate towards the center. The loosening head 1 is installed at the front end of the boom 2. Two loosening heads 1 are symmetrically connected to one end of the boom 2, and the other end is connected to the top of the rotary mechanism 3 by a pin. There is a boom cylinder 11 under the boom 2. The boom cylinder 11 and the rotary mechanism 3 can control the position of the boom 2. The gantry 4 is welded from multiple steel plates. The middle part of the uppermost steel plate of the gantry 4 has the same shape as the circular bottom of the slewing mechanism 3. The gantry 4 has four lugs welded on for connecting the boom cylinder 11 and the bucket cylinder 10. A square gap is reserved in the center of the gantry 4. Hinge holes are opened on the inner steel plates of the gantry 4, and the scraper conveying mechanism 6 and the square sliding housing 12 are fixed by pins. A long slot is opened in the middle of the bottom of the gantry 4, through which the adjusting screw 17 passes to connect and adjust the track telescopic mechanism 15. (Refer to...) Figure 2 As shown, the scraper conveying mechanism 6 is fixed to the middle of the gantry 4 by the pin of the square sliding shell 12 and the bucket cylinder 10. The drive hydraulic station 7 is fixed to the rear of the vehicle body 14. The track walking mechanism 8 is symmetrically arranged on both sides of the vehicle body 14. The two track telescopic mechanisms 15 are installed directly above the vehicle body 14 and do not contact the vehicle body 14. The vehicle body 14 and the track telescopic mechanism 15 are respectively hinged to the track walking mechanism 8 through ear plates. The bucket device 9 is installed in front of the vehicle body 14 and welded to the scraper conveying mechanism 6. The bucket device 9 has ear plates on the back. Two connecting rods 13 hinge the bucket device 9 to the vehicle body 14.

[0041] Reference Figure 3As shown, the tracked walking mechanism 8 has a connecting steel frame in the middle, which is used to weld hinged connectors 16. Two hinged connectors 16 are arranged longitudinally along the vehicle body 14. Each hinged connector 16 has two lugs at both ends for hinged connection with the vehicle body 14 and the track telescopic mechanism 15, realizing the change of the tracked walking mechanism 8; the track telescopic mechanism 15 is referenced. Figure 4 As shown, the track telescopic mechanism 15 includes a screw slider 151, a first scissor link 152, a second scissor link 153, and a slider connecting ear plate 154. One end of the first scissor link 152 is a plate-shaped link, and the other end is a C-shaped link. A number of slider connecting ear plates 154 are symmetrically welded to both sides of the screw slider in the track telescopic mechanism 15. One end of the first scissor link 152 is hinged to the slider connecting ear plate 154, and the other end is hinged to the second scissor link 153. The hinge point of the first scissor link 152 and the second scissor link 153 of the track telescopic mechanism 15 is then hinged to the hinge connector 16. The other end of the hinge connector 16 is hinged to the ear plate on the track traveling mechanism 8. Four slider connecting ear plates 154 are welded to both sides of a screw slider 151. The fork-shaped end of the first scissor rod 152 is hinged to the second scissor rod 153, and the other end is hinged to the two slider connecting ear plates 154. The track telescopic mechanism 15 is symmetrical about the center of the screw slider 151 and about the front and back of the center of the gantry 4.

[0042] In its initial state, the tracked walking mechanism 8 is horizontal at the bottom. Four hinge plates are welded to the inner side of the upper and lower middle part of the tracked walking mechanism 8. These hinge plates are hinged to the hinge plates on the vehicle body 14, so that the tracked walking mechanism 8 and the vehicle body 14 are hinged. A hinge connector 16 is welded to the tracked walking mechanism 8 to realize the hinged relationship between the tracked walking mechanism 8 and the track telescopic mechanism 15. The state of the tracked walking mechanism 8 can be adjusted according to the working environment. The track telescopic mechanism 15 adjusts the width by adjusting the screw 17 and pulls the tracked walking mechanism 8 inward to adapt to different circular pipe culverts, thereby improving the applicability of the soil sweeping vehicle. The adjustment steps for the track telescopic mechanism 15 are as follows: When driving to the entrance of the culvert, stop the soil cleaning vehicle, rotate the adjusting screw 17 to make both track telescopic mechanisms 15 retract simultaneously, pull the upper part of the track walking mechanism 8 inward, and then drive the track walking mechanism 8 into the culvert. Then adjust the track telescopic mechanism 15 until the bottom surface of the track walking mechanism 8 is in contact with the inner wall of the culvert in a large area. The adjustment is then complete.

[0043] The rake head 1 and boom 2 are located at the front of the soil sweeping vehicle. Before the soil sweeping vehicle enters the culvert, the height and horizontal position of the rake head 1 and boom 2 need to be pre-adjusted by the boom cylinder 11 and the slewing mechanism 3 to avoid collision with the inner wall of the culvert. During operation, the position of the rake head 1 and boom 2 can be adjusted as needed.

[0044] Reference Figure 8 As shown, the bucket device 9 includes a bucket ear plate 91, a bucket body 92, a bottom plate slot 93, and a bottom plate 94. The bucket ear plate 91 is welded to the middle of the bucket body 92, the bottom plate slot 93 is welded and fixed to the bottom of the bucket body 92, and the bottom plate 94 is fixed to the bottom plate slot 93. Before the soil sweeping vehicle enters the culvert, the bucket device 9 first changes the bottom plate 94 according to the shape of the culvert to adapt the bucket device 9 to the inner wall of the culvert. Then, the height of the bucket device 9 is adjusted by the bucket cylinder 10 to avoid collision with the inner wall of the culvert, and then it can start working.

[0045] In this embodiment, there are two rake heads 1, symmetrically installed on both sides of the foremost end of the boom 2. The boom 2 is fixed by the slewing mechanism 3 and the boom cylinder 11. The slewing mechanism 3 is bolted to the center of the mast 4. The mast 4 is welded to the middle of the vehicle body 14. Long slots are opened on the inner side and bottom of the mast 4, and a rectangular space is left between the upper and lower surfaces of the mast 4. The scraper conveying mechanism 6 passes through the rectangular space reserved in the middle of the mast 4 and is supported on the mast 4 by two pins. The bearing support 63 at the rear end of the scraper conveying mechanism 6 is equipped with a motor drive shaft 5, which drives the hydraulic station 7. The tracked walking mechanism 8 is fixedly connected to the rear of the vehicle body 14. It is located below the scraper conveying mechanism 6 and is hinged to the vehicle body 14 and the track telescopic mechanism 15 respectively through the hinged connector 16. The bucket device 9 is installed at the front end of the scraper conveying mechanism 6 and welded into one piece. It is connected to the vehicle body 14 at the rear of the bucket device 9 through the connecting rod 13. One end of the bucket cylinder 10 is hinged to the mast 4 and the other end is hinged to the bucket ear plate 91. One end of the boom cylinder 11 is hinged to the mast 4 and the other end is hinged to the boom 2. The square sliding shell 12 is fixed to the scraper conveying mechanism 6 by a pin.

[0046] The scraper conveyor mechanism 6 is supported on the gantry 4 by two pins. The front end of the scraper conveyor mechanism 6 can be tilted up by the bucket cylinder 10 and the connecting rod 13 to raise the bucket device 9.

[0047] In this embodiment, the adjusting screw 17 passes through four screw sliders 151 and the long slot at the bottom of the gantry 4. One screw slider 151 near the nut end of the adjusting screw 17 is fixed. By rotating the adjusting screw 17, the other three screw sliders 151 connected above slide along the direction of the adjusting screw 17. The first scissor link 152 and the second scissor link 153 move as the distance between the two screw sliders 151 changes. That is, the track telescopic mechanism 15 extends and retracts laterally, pulling or pushing the track walking mechanism 8 to complete the adjustment, so that the soil sweeping vehicle can adapt to circular and rectangular culverts. At the same time, the flexible connection of the various components of the track telescopic mechanism 15 reduces its maintenance cost.

[0048] In this embodiment, refer to Figure 5As shown, the slewing mechanism 3 is bolted to the gantry 4. The slewing mechanism 3 includes a boom connecting lug 31, a lug bracket 32, a circular connecting plate 33, a slewing bearing 34, and a boom cylinder connecting lug 35. The circular connecting plate is bolted to the slewing bearing 34 and the gantry 4. The lug bracket 32 ​​is welded between the two boom connecting lugs 31. The boom cylinder connecting lug 35 is vertically welded to the front end of the lug bracket 32. The bottom of the slewing mechanism 3 is the slewing bearing 34, on which a circular connecting plate 33 is connected. Two boom connecting lugs 31 are welded to the circular connecting plate 33. A lug bracket 32 ​​is installed between the boom connecting lugs 31 to improve the stability of the slewing mechanism 3. Two boom cylinder connecting lugs 35 are welded to the lug bracket 32. The boom connecting lugs 31 are perpendicular to the slewing bearing 34, and the two boom connecting lugs 31 are parallel to each other, as are the two boom cylinder connecting lugs 35.

[0049] In this embodiment, refer to Figure 6 As shown, the scraper conveying mechanism 6 includes a spiral working head 61, scrapers 62, bearing supports 63, rectangular tube support wings 64, rectangular support tube 65, and a chain 66. The spiral working head 61 is installed in front of the lower end of the scraper conveying mechanism 6. The scrapers 62 are closely distributed along the rectangular support tube 65. The rectangular tube support wings 64 are spaced apart on both sides of the rectangular support tube 65. The chain 66 is installed on a sprocket 614 and located below the scrapers 62. A motor drive shaft 5 is installed in the bearing support 63 at the rear end of the scraper conveying mechanism 6. The spiral working head 61 includes spiral blades 611, a connecting roller shaft 612, a roller 613, and a sprocket 614. There are multiple spiral blades 611, distributed on the outer surface of the roller 613. The connecting roller shaft 612 is fixed in the middle of the roller 613, and the sprockets 614 are symmetrically installed between the connecting roller shaft 612 and the roller 613. The spiral working head 61 is installed at the front end of the scraper conveying mechanism 6. The left and right spirals rotate in opposite directions, which can realize the material collection function. Multiple scrapers 62 are closely connected to form a scraper conveying plate, which transports the material collected by the spiral working head 61 to the rear end. The rear end can be followed by a transport trolley to transfer accumulated soil, etc. The rectangular support tube 65, bearing support 63 and rectangular support wing in the scraper conveying mechanism 6 play a structural support role, so that the scraper conveying mechanism 6 has a certain load-bearing capacity and can easily ensure the conveying.

[0050] A specific embodiment of the present invention also provides a method for cleaning culverts, which is implemented based on a culvert cleaning device provided by the present invention, with reference to... Figure 9 As shown, it includes: Adjust the position of boom 2 and rake head 1 according to the pipe culvert to be cleaned; The ground clearance of the bucket device 9 can be adjusted by adjusting the position of the scraper conveyor mechanism 6; The width and tilt angle of the track travel mechanism 8 can be changed by the track telescopic mechanism 15. The drive rake head 1 rotates to loosen the accumulated soil, and the accumulated soil is collected by the bucket device 9 and transported backward by the scraper conveyor mechanism 6.

[0051] In this specific embodiment, the various steps of the culvert cleaning method constitute a complete technical solution. Adjusting the positions of the boom 2 and the rake head 1 according to the specific structural characteristics of the culvert to be cleaned allows the cleaning device to adapt to the working environment of culverts of different sizes and shapes. Adjusting the position of the scraper conveying mechanism 6 adjusts the ground clearance of the bucket device 9, ensuring that the bucket device 9 maintains an appropriate working distance from the bottom of the culvert, effectively collecting accumulated soil while avoiding excessive interference with the bottom of the culvert.

[0052] By operating the track extension mechanism 15 to change the width and tilt angle of the track traveling mechanism 8, this step allows the sweeping device to be stably supported on the inner wall of the circular or rectangular culvert, providing a stable working platform for the entire sweeping operation. Driving the rake head 1 to rotate loosens the accumulated soil, collecting the loosened soil through the bucket device 9, and then conveying the soil backward through the scraper conveying mechanism 6—these three consecutive steps constitute a complete soil handling process, realizing continuous operation from soil loosening to collection and then to conveying.

[0053] The adjustment of the boom 2 and the rake head 1 created the necessary conditions for loosening the accumulated soil; the adjustment of the scraper conveyor mechanism 6 ensured that the bucket device 9 was in the optimal collection position; the adjustment of the track walking mechanism 8 ensured the stable support of the entire device inside the culvert; and the rotation of the rake head 1, the collection of the bucket device 9, and the conveying of the scraper conveyor mechanism 6 formed a complete material handling production line. The organic coordination of these steps enabled the culvert cleaning operation to be carried out efficiently and continuously, significantly improving cleaning efficiency and work quality.

[0054] The culvert cleaning method provided in another specific embodiment of the present invention includes: Step 1: Outside the culvert, adjust the boom 2 and the rake head 1 to a suitable working position using the boom cylinder 11. Transport the soil sweeping vehicle to the culvert, place it at the culvert opening using hoisting equipment, and drive the crawler walking mechanism 8 to bring the rake head 1 and boom 2 close to the culvert opening. By adjusting the boom cylinder 11, ensure that the rake head 1 and boom 2 can enter the culvert without colliding with the inner wall of the culvert. Step 2: Adjust the positions of the bucket device 9 and the scraper conveyor mechanism 6 using the bucket cylinder 10, connecting rod 13, and square sliding housing 12. Using the pin on the gantry 4, tilt one end of the bucket device 9 and the scraper conveyor mechanism 6 upwards. Adjust the bucket cylinder 10 to tilt or press down the front end of the scraper conveyor mechanism 6, raising or lowering the bucket device 9 until the bucket 9 no longer collides with the inner wall of the culvert. The adjustment is then complete. Step 3: For square culverts, drive the tracked walking mechanism 8. Adjust the bucket cylinder 10 and boom cylinder 11 to make the rake head 1 and bucket device 9 work effectively. During operation, the boom 2 and rake head 1 can be swung left and right by adjusting the slewing mechanism 3. For circular culverts, drive the tracked walking mechanism 8 into the culvert. Adjust the track telescopic mechanism 15 by adjusting the screw 17 until the tracked walking mechanism 8 adapts to the inner surface of the culvert or pipe. The bucket device 9 also needs to be adapted to the curved inner surface of the culvert by replacing the base plate 94. By driving the adjusting screw 17, adjust the track telescopic mechanism 15 synchronously to change its lateral width. When the track telescopic mechanism 15 retracts, it pulls the tracked walking mechanism 8 inward to make it rotate inward. When the bottom of the tracked walking mechanism 8 fits tightly against the inner wall of the culvert and can travel stably in the culvert, the adjustment is complete.

[0055] Step 4: When working inside the culvert, if obstacles are encountered, the boom 2, the rake head 1, and the bucket device 9 can be raised by adjusting the boom cylinder 11 and the bucket cylinder 10 to achieve obstacle avoidance. Depending on the working conditions, the rake head 1, boom 2, bucket device 9, and tracked walking mechanism 8 can be adjusted in steps 1, 2, and 3 respectively to increase the passability of the soil sweeping vehicle.

[0056] This invention installs the rake head 1 at the front end, which works in conjunction with the bucket device 9 and the scraper conveying mechanism 6, improving work efficiency and solving the problem that soil sweeping vehicles cannot adapt to the working media in pipelines and culverts (which contain different media such as silt, stones, branches, and weeds).

[0057] The boom 2, rake head 1, and bucket device 9 of the present invention can be adjusted by hydraulic cylinders and slewing mechanism 3 to adapt to different working positions and obstacle avoidance functions.

[0058] The track telescopic mechanism 15 and the bucket device 9 of the present invention can be adjusted by adjusting the screw 17 and replacing the bottom plate 94, respectively, so as to realize the tilting of the track walking mechanism 8 and the change of the shape of the bottom plate of the bucket device 9, which can be applied in square pipe culverts and circular pipe culverts.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A culvert cleaning device, characterized in that, It includes a vehicle body (14) and a mast (4) fixedly connected to the vehicle body (14), and a rotating mechanism (3) is provided on the top of the mast (4); The boom (2) is connected at one end to the top of the slewing mechanism (3) and at the other end to the rake head (1); The scraper conveying mechanism (6) is connected to the gantry (4) via a square sliding shell (12), and a bucket device (9) is connected to the front end of the scraper conveying mechanism (6); The vehicle body (14) is provided with track walking mechanisms (8) on both sides, and the bottom of the vehicle body (14) is provided with track telescopic mechanism (15), which is connected to the track walking mechanisms (8) on both sides of the vehicle body (14).

2. The culvert cleaning device according to claim 1, characterized in that, The track telescopic mechanism (15) is connected to the vehicle body (14) through an adjusting screw (17). The adjusting screw (17) is provided with a screw slider (151), and the screw slider (151) is connected to the track walking mechanism (8) through a scissor linkage mechanism.

3. The culvert cleaning device according to claim 1, characterized in that, The slewing mechanism (3) includes a slewing bearing (34) fixed on the gantry (4), a connecting plate (33) is mounted on the slewing bearing (34), and a boom connecting lug (31) is provided on the connecting plate (33).

4. The culvert cleaning device according to claim 1, characterized in that, The scraper conveying mechanism (6) includes a support tube (65), a spiral working head (61) disposed at the front end of the support tube (65), and a plurality of scrapers (62) disposed around the support tube (65) and driven by a chain (66).

5. A culvert cleaning device according to claim 4, characterized in that, The spiral working head (61) includes a roller (613) and spiral blades (611) connected to the outer surface of the roller (613), wherein the spiral direction of the spiral blades (611) is configured to cause the material to converge towards the center.

6. A culvert cleaning device according to claim 1, characterized in that, The bucket device (9) includes a bucket body (92), a bottom plate slot (93) is welded to the bottom of the bucket body (92), and a bottom plate (94) is installed between the bucket body (92) and the bottom plate slot (92).

7. A culvert cleaning device according to claim 1, characterized in that, The boom (2) is connected to the gantry (4) via the boom cylinder (11), and the bucket device (9) is connected to the gantry (4) via the bucket cylinder (10).

8. A method for cleaning culverts, characterized in that, The culvert cleaning device according to any one of claims 1 to 7 includes: Adjust the position of the boom (2) and the rake head (1) according to the culvert to be cleaned; The height of the bucket device (9) off the ground is adjusted by adjusting the position of the scraper conveying mechanism (6); The width and tilt angle of the track travel mechanism (8) can be changed by the track telescopic mechanism (15); The drive rake head (1) rotates to loosen the accumulated soil, and the accumulated soil is collected by the bucket device (9) and transported backward by the scraper conveyor mechanism (6).

9. The method according to claim 8, characterized in that, The adjustment of the boom (2) and rake head (1) positions according to the culvert to be cleaned includes: The boom (2) is connected to the gantry (4) via the boom cylinder (11). By adjusting the boom cylinder (11), the positions of the rake head (1) and the boom (2) are adjusted so that they can enter the culvert without colliding with the inner wall of the culvert.

10. The method according to claim 8, characterized in that, The adjustment of the ground clearance of the bucket device (9) by adjusting the position of the scraper conveying mechanism (6) includes: The bucket device (9) is connected to the gantry (4) via the bucket cylinder (10). By adjusting the bucket cylinder (10), the height of the front end of the scraper conveying mechanism (6) and the height of the bucket device (9) can be changed.

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