A water conservancy project dredging device

Abstract

This invention belongs to the technical field of dredging equipment for water conservancy projects, specifically a dredging device for water conservancy projects. It includes a hull with an adjusting rod hinged to the stern. The upper end of the adjusting rod is hinged to the upper end of a hydraulic cylinder, and the lower end of the hydraulic cylinder is hinged to the stern. A mesh cover is fixedly connected to the lower end of the adjusting rod, and the mesh cover connects to a dredging pipe. The dredging pipe is fixedly installed on the adjusting rod, with one end connected to the inlet of a sludge conveying pump. The outlet of the sludge conveying pump is connected to the feed end of a sludge dewatering device. A conveying mechanism is located below the discharge end of the sludge dewatering device. The conveying mechanism includes two sets of drive shafts, which drive a conveyor belt and four sets of scrapers to perform circular motion. This not only causes the soil to fall into the sludge storage bin, but also the scrapers level the soil pile height within the sludge storage bin, making the soil pile more evenly distributed and increasing the storage capacity of the sludge storage bin.

Description

Technical Field

[0001] This invention belongs to the technical field of dredging equipment for water conservancy projects, specifically a dredging equipment for water conservancy projects. Background Technology

[0002] As water flows, sediment accumulates, forming large amounts of silt in riverbeds and reservoirs. This silt can impede water flow and increase the risk of flooding. Therefore, regular silt removal can restore and maintain the designed flood control capacity. Currently, silt removal mainly uses mechanical equipment such as dredgers to directly remove silt from the riverbed or the bottom of the reservoir.

[0003] Patent CN221193514U discloses an environmentally friendly dredging vessel for water conservancy projects. The vessel includes a hull with an adjusting rod hinged to the stern. A dredging pipe is fixedly mounted on the adjusting rod, and one end of the dredging pipe is connected to a sludge conveying pump. The sludge conveying pump is connected to a sludge dewatering mechanism via a pipeline. A conveyor belt for conveying sludge is provided on one side of the sludge dewatering mechanism. In this design, the sludge conveying pump draws sludge from the bottom of the riverbed through the dredging pipe, and then the sludge is dewatered by the sludge dewatering mechanism. The resulting sludge is conveyed to the dredging vessel via the conveyor belt, while the generated water is directly discharged into the river. This design integrates sludge suction, dewatering, and transfer, improving the practicality of the device.

[0004] In the above scheme, the conveyor belt transports the dewatered sludge to the sludge storage bin, where the sludge accumulates on its own, increasing in height. Because the output end of the conveyor belt remains stationary, the position at which the conveyor belt throws the dewatered sludge into the storage bin is fixed. This prevents the sludge from spreading evenly within the storage bin, and the accumulated sludge quickly approaches the output end of the conveyor belt, preventing further transport and reducing the storage capacity of the sludge bin. Therefore, this invention provides a dredging device for water conservancy projects. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a water conservancy engineering dredging equipment, including a hull, an adjusting rod hinged to the stern of the hull, the upper end of the adjusting rod hinged to the upper end of a hydraulic cylinder, the lower end of the hydraulic cylinder hinged to the stern of the hull, a net fixedly connected to the lower end of the adjusting rod, the net connecting to a dredging pipe, the dredging pipe fixedly installed on the adjusting rod, and one end of the dredging pipe connected to the inlet of a sludge conveying pump, the outlet of the sludge conveying pump connected to the feed end of a sludge dewatering device, a conveying mechanism provided below the discharge end of the sludge dewatering device, the conveying mechanism including two sets of drive shafts, the two sets of drive shafts rotatably installed in the hull, transmission sleeves fitted on the drive shafts, a conveyor belt surrounding the two sets of transmission sleeves, two sets of side plates, both sets of transmission sleeves rotatably connected to the side plates, sprockets fixedly fitted at both ends of the two sets of transmission sleeves, two sets of chains, the chains meshing with the two sets of sprockets, four sets of scrapers, the scrapers fixedly connected to two sets of connecting seats, the two sets of connecting seats respectively connected to the two sets of chains, and a partition provided in the hull. By driving the conveyor belt and four sets of scrapers to make circular motion, not only does the soil fall into the sludge storage bin, but the scrapers also level the height of the soil pile in the sludge storage bin, making the soil pile more evenly distributed in the sludge storage bin and increasing the storage capacity of the sludge storage bin.

[0007] Preferably, the connecting seat includes a seat body, a chain fixedly connected to one side of the seat body, a rotating sleeve rotatably installed in the seat body, a movable head movably inserted into the rotating sleeve, a spring located inside the rotating sleeve, one end of the movable head tightly attached to the spring, a bearing shaft fixedly connected to the other end of the movable head, a first gear fixedly fitted on the rotating sleeve, a gear shaft meshing with the first gear, a scraper fixedly connected to the outer ring of the gear shaft, a guide hole opened on the other side of the seat body, the bearing shaft movably inserted into the guide hole, the gear shaft rotatably installed on the seat body, one end of the bearing shaft tightly attached to the side plate, a pad for pushing the bearing shaft provided on the side plate, a scraper fixedly installed at the upper end of the partition plate, two sets of spiral grooves opened on the rotating sleeve, two sets of convex shafts provided on the outer ring of the movable head, the two sets of convex shafts respectively located in the two sets of spiral grooves; The moving head drives two sets of convex shafts to squeeze the groove wall of the spiral slide, causing the rotating sleeve and the first gear to rotate. The rotating first gear drives the scraper to rotate through meshing with the gear shaft until one end of the pressure shaft is offset from one end of the pad. At this time, the scraper rotates and the scraper blades on the partition are perpendicularly distributed, realizing the cleaning of the soil on the scraper and ensuring the scraper's effect of leveling the soil pile. At the same time, the energy consumption of driving the scraper will not increase.

[0008] Preferably, the scraper includes a main board, a connecting seat fixedly connected to the main board, two sets of telescopic plates, the two sets of telescopic plates being inserted into both ends of the main board respectively, an L-shaped rack fixedly connected to one end of the telescopic plate, a second gear, the second gear being rotatably installed inside the main board and meshing with the two sets of L-shaped racks, a rubber strip fixedly connected to one end of the L-shaped racks, the conveying mechanism also includes an internally threaded tube, both sets of side plates being fixedly connected to the internally threaded tube, the internally threaded tube being screwed to a screw rod, the screw rod being rotatably installed inside the hull, a transmission sleeve having a built-in rectangular through hole, a drive shaft being slidably connected to the rectangular through hole, and one end of the rubber strip being fixedly connected to the inner wall of the main board; The moving L-shaped rack drives the second gear to rotate, which in turn drives another set of L-shaped racks to move. This other set of L-shaped racks then moves another set of telescopic plates into the main plate, shortening the overall length of the scraper. This reduces the area covered by the conveying mechanism above the sludge storage silo until the conveying mechanism is blocked by one side of the silo and cannot move. At this point, the distance between the conveying mechanism and the other side of the silo increases, creating more space above the conveying mechanism and the other side of the silo, making it easier for related mechanical equipment to enter the silo from this point.

[0009] The beneficial effects of this invention are as follows: 1. By driving the conveyor belt and four sets of scrapers to make circular motion, not only does the soil fall into the sludge storage bin, but the scrapers also level the height of the soil pile in the sludge storage bin, making the soil pile more evenly distributed in the sludge storage bin and increasing the storage capacity of the sludge storage bin.

[0010] 2. When the scraper approaches the top of the partition, one end of the bearing shaft is pushed by one end of the pad, causing the bearing shaft to slide along the guide hole towards the inside of the seat. At the same time, the bearing shaft drives the movable head to move towards the inside of the swivel sleeve, and the movable head compresses the spring. Simultaneously, the movable head drives the two sets of convex shafts to squeeze the groove wall of the spiral slide, causing the swivel sleeve and the first gear to rotate. The rotating first gear drives the scraper to rotate through meshing with the gear shaft until one end of the bearing shaft is offset from one end of the pad. At this time, the scraper rotates 90 degrees, and the scraper and the scraper blades on the partition are perpendicularly distributed. Therefore, the scraper blades scrape off the soil attached to the scraper, thereby cleaning the soil on the scraper and ensuring the scraper's effect of leveling the soil pile. At the same time, the energy consumption of driving the scraper does not increase.

[0011] 3. The motor drives the screw to rotate, causing the internal threaded tube to move two sets of side plates towards one side of the sludge storage bin. The two sets of side plates drive the transmission sleeve to slide along the drive shaft, causing the entire conveying mechanism to shift towards one side of the sludge storage bin. At the same time, a set of telescopic plates on the scraper is squeezed by one side of the sludge storage bin, causing the set of telescopic plates to be pushed into the main plate. Simultaneously, the set of telescopic plates pushes the corresponding L-shaped rack towards another set of telescopic plates, and the L-shaped rack stretches the rubber strip. The moving L-shaped rack drives the second gear to rotate, and the second gear drives another set of L-shaped racks to move. The other set of L-shaped racks drives another set of telescopic plates to move into the main plate, shortening the length of the entire scraper and reducing the area covered by the entire conveying mechanism above the sludge storage bin. This continues until the conveying mechanism is blocked by one side of the storage bin and cannot move. At this point, the distance between the conveying mechanism and the other side of the storage bin increases, increasing the space above the conveying mechanism and facilitating the entry of related mechanical equipment into the storage bin. Attached Figure Description

[0012] The invention will now be further described with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a cross-sectional schematic diagram of the hull and conveying mechanism combination of the present invention.

[0015] Figure 3 This is a schematic diagram of the drive shaft, transmission sleeve, side plate conveyor belt, conveyor belt, sprocket, and chain assembly of the present invention.

[0016] Figure 4 This is a schematic diagram of the combination of the side plate, chain, scraper, and connecting seat of the present invention.

[0017] Figure 5 This is a cross-sectional schematic diagram of the connector of the present invention.

[0018] Figure 6 This is a schematic diagram of the pressure-bearing shaft, movable head, sectional view of the rotary sleeve, and spring assembly of the present invention.

[0019] Figure 7 This is a schematic diagram of the conveying mechanism, partition, and scraper assembly of the present invention.

[0020] Figure 8 This is a schematic diagram of the combination of the hull and the conveying mechanism of the present invention from another perspective.

[0021] Figure 9 This is a cross-sectional schematic diagram of the scraper and connecting seat assembly of the present invention.

[0022] In the diagram: 1. Hull; 101. Bulkhead; 102. Scraper; 2. Adjusting rod; 3. Hydraulic cylinder; 4. Net cover; 5. Dredging pipe; 6. Sludge conveying pump; 7. Sludge dewatering device; 8. Conveying mechanism; 801. Drive shaft; 802. Transmission sleeve; 8021. Rectangular through hole; 803. Side plate; 8031. Pad strip; 804. Conveyor belt; 805. Sprocket; 806. Chain; 807. Scraper; 808. Connecting seat ; 809, Internally threaded pipe; 810, Screw; 8081, Base; 811, Guide hole; 8082, Pressure bearing shaft; 8083, Moving head; 831, Convex shaft; 8084, Screw coupling sleeve; 841, Helical groove; 8085, Spring; 8086, First gear; 8087, Gear shaft; 8071, Main board; 8072, Telescopic plate; 8073, L-shaped rack; 8074, Second gear; 8075, Rubber strip. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] Example 1 like Figures 1 to 3 As shown in the embodiment of the present invention, a dredging device for water conservancy projects includes a hull 1. An adjusting rod 2 is hinged to the stern of the hull 1. The upper end of the adjusting rod 2 is hinged to the upper end of a hydraulic cylinder 3, and the lower end of the hydraulic cylinder 3 is hinged to the stern of the hull 1. A mesh cover 4 is fixedly connected to the lower end of the adjusting rod 2. The mesh cover 4 is connected to a dredging pipe 5, which is fixedly installed on the adjusting rod 2. One end of the dredging pipe 5 is connected to the inlet of a sludge conveying pump 6, and the outlet of the sludge conveying pump 6 is connected to the feed end of a sludge dewatering device 7. A conveying mechanism 8 is provided below the discharge end of the sludge dewatering device 7. The conveying mechanism 8 includes two sets of drive shafts 801, which are rotatably mounted on the hull. Inside the hull 1, there are transmission sleeves 802 mounted on the drive shaft 801, and a conveyor belt 804 surrounding the two sets of transmission sleeves 802. The two sets of side plates 803 are symmetrically distributed on both sides of the conveyor belt 804. Both sets of transmission sleeves 802 are rotatably connected to the side plates 803. Both ends of the two sets of transmission sleeves 802 are fixedly fitted with sprockets 805. There are two sets of chains 806, which are mounted on the two sets of sprockets 805 and mesh with the two sets of sprockets 805. There are four sets of scrapers 807, which are fixedly connected to two sets of connecting seats 808. The two sets of connecting seats 808 are respectively connected to the two sets of chains 806. A partition 101 is provided inside the hull 1.

[0025] Specifically, a silt storage chamber is formed inside the hull 1 through the partition 101. This silt storage chamber is located directly below the conveying mechanism 8. The dredging pipe 5, silt conveying pump 6, and silt dewatering device 7 all adopt the corresponding mechanisms from the aforementioned environmentally friendly dredging vessel for water conservancy projects disclosed in CN221193514U. When dredging of the river is required, the hull 1 is driven to the silt blockage in the river. Then, the hydraulic cylinder 3 pushes the adjusting rod 2, causing the adjusting rod 2, along with the dredging pipe 5 and the net cover 4, to rotate downwards until the net cover 4 is submerged in the silt. Then, the sludge conveying pump 6 is started, and the sludge in the river channel is pumped into the sludge removal pipe 5 through the mesh cover 4. The sludge then flows through the sludge removal pipe 5 and the sludge conveying pump 6 into the sludge dewatering device 7. The sludge is dewatered by the sludge dewatering device 7, and the dewatered sludge becomes soil. The soil falls onto the conveyor belt 804 of the conveying mechanism 8. At this time, a set of drive shafts 801 are driven to rotate by the motor. The set of drive shafts 801 drives the corresponding transmission sleeves 802 to rotate, so that the conveyor belt 804 makes a circular motion around the two sets of transmission sleeves 802. Below is attached Figure 2 The middle arrow indicates the direction of circular motion. The soil is conveyed by the conveyor belt 804 and falls into the sludge storage bin. At the same time, the rotating transmission sleeve 802 drives the two sets of sprockets 805 to rotate. The sprockets 805 drive the chain 806, the connecting seat 808, and the four sets of scrapers 807 to perform circular motion. As the soil is continuously fed into the sludge storage bin, the height of the soil pile will approach that of the scrapers 807. The scrapers 807 scrape off the soil that exceeds the height of the scrapers 807 and push the soil towards the sludge dewatering device 7. Compared with the prior art, by driving the conveyor belt 804 and the four sets of scrapers 807 to perform circular motion, not only does the soil fall into the sludge storage bin, but the scrapers 807 also level the height of the soil pile in the sludge storage bin, making the soil pile more evenly distributed in the sludge storage bin and increasing the storage capacity of the sludge storage bin.

[0026] like Figures 4 to 7As shown, the connecting seat 808 includes a seat body 8081, a chain 806 fixedly connected to one side of the seat body 8081, a rotating sleeve 8084 rotatably installed inside the seat body 8081, a movable head 8083 movably inserted into the rotating sleeve 8084, a spring 8085 located inside the rotating sleeve 8084, one end of the movable head 8083 tightly abutting the spring 8085, the spring 8085 located between the rotating sleeve 8084 and the movable head 8083, a bearing shaft 8082 fixedly connected to the other end of the movable head 8083, a first gear 8086 fixedly fitted on the rotating sleeve 8084, a gear shaft 8087 meshing with the first gear 8086, and an outer ring of the gear shaft 8087. A scraper 807 is fixedly connected. A guide hole 811 is provided on the other side of the seat 8081. The pressure shaft 8082 is movably inserted into the guide hole 811. The gear shaft 8087 is rotatably mounted on the seat 8081. One end of the pressure shaft 8082 is tightly attached to the side plate 803. A pad 8031 ​​for pushing the pressure shaft 8082 is provided on the side plate 803. A scraper 102 is fixedly installed on the upper end of the partition plate 101. The pad 8031 ​​is located above the scraper 102. Two sets of spiral grooves 841 are provided on the screw-fit sleeve 8084. Two sets of convex shafts 831 are provided on the outer ring of the movable head 8083. The two sets of convex shafts 831 are respectively located in the two sets of spiral grooves 841.

[0027] Specifically, after the sludge is dehydrated, it produces soil. Because the soil is not completely dry, it has a certain degree of adhesion. When the scraper 807 is leveling the soil pile, it will squeeze the soil, which easily causes the soil to adhere to the scraper 807. As more and more soil adheres to the scraper 807, it not only affects the leveling of the soil pile by the scraper 807, but also increases the weight of the scraper 807, thereby increasing the energy consumption of driving the scraper 807. Therefore, the aforementioned sprocket 805 drives... During the circular motion of chain 806, connecting seat 808, and four sets of scrapers 807, one end of the pressure bearing shaft 8082 on the connecting seat 808 slides tightly against the side plate 803. When the scraper 807 approaches the top of the partition plate 101, one end of the pressure bearing shaft 8082 is pushed by the chamfered surface of one end of the pad strip 8031, causing the pressure bearing shaft 8082 to slide along the guide hole 811 toward the inside of the seat body 8081. At the same time, the pressure bearing shaft 8082 drives the movable head 8083 to rotate. The sleeve 8084 moves internally, and the movable head 8083 compresses the spring 8085. Simultaneously, the movable head 8083 drives the two sets of convex shafts 831 to press against the groove wall of the spiral groove 841, causing the sleeve 8084 and the first gear 8086 to rotate. The rotating first gear 8086, through meshing with the gear shaft 8087, causes the scraper 807 to rotate clockwise until one end of the pressure shaft 8082 is offset from the chamfered surface of one end of the pad strip 8031. At this point, the scraper 807 rotates clockwise. When the clock hand rotates 90 degrees, the scraper 807 and the scraper blade 102 on the partition plate 101 are perpendicularly distributed. Therefore, the scraper blade 102 scrapes off the dirt attached to the scraper 807 until one end of the pressure shaft 8082 is offset from the entire pad strip 8031. Under the rebound force of the spring 8085, the scraper 807 returns to its original state, thereby cleaning the dirt on the scraper 807 and ensuring that the scraper 807 can level the dirt pile. At the same time, the energy consumption of driving the scraper 807 will not increase.

[0028] Example 2 like Figure 3 , Figure 7 , Figure 8 , Figure 9As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the scraper 807 includes a main board 8071, a connecting seat 808 fixedly connected to the main board 8071, two sets of telescopic plates 8072, the two sets of telescopic plates 8072 are respectively inserted into both ends of the main board 8071, an L-shaped rack 8073 fixedly connected to one end of the telescopic plate 8072, a second gear 8074 rotatably installed in the main board 8071, and the second gear 8074 meshes with the two sets of L-shaped racks 8073, a rubber strip 8075 fixedly connected to one end of the L-shaped rack 8073, the conveying mechanism 8 also includes an internally threaded tube 809, both sets of side plates 803 are fixedly connected to the internally threaded tube 809, the internally threaded tube 809 is screwed to a screw rod 810, the screw rod 810 is rotatably installed in the hull 1, the transmission sleeve 802 has a built-in rectangular through hole 8021, the drive shaft 801 is slidably connected to the rectangular through hole 8021, and one end of the rubber strip 8075 is fixedly connected to the inner wall of the main board 8071.

[0029] Specifically, the rubber strip 8075 has good elasticity, and both the main board 8071 and the telescopic plate 8072 are hollow rectangular structures. The conveying mechanism 8 is located above the sludge storage silt, and most of the area above the silt is blocked by the conveying mechanism 8. When it is necessary to unload the sludge from the silt storage silt, it is very inconvenient for the relevant mechanical equipment to enter the silt storage silt through the conveying mechanism 8. Therefore, before unloading the sludge from the silt storage silt, the screw 810 is driven by the motor to rotate, causing the internal threaded tube 809 to drive the two sets of side plates 803 to move towards one side of the sludge storage silt. The two sets of side plates 803 drive the transmission sleeve 802 to slide along the drive shaft 801, causing the entire conveying mechanism 8 to shift towards one side of the sludge storage silt. At the same time, a set of telescopic plates 8072 on the scraper 807 is squeezed by one side of the sludge storage silt, causing the set of telescopic plates 8072 to be pushed in. As the conveyor moves into the main board 8071, the corresponding L-shaped rack 8073 is pushed by the telescopic plate 8072 towards another set of telescopic plates 8072. The L-shaped rack 8073 stretches the rubber strip 8075. The moving L-shaped rack 8073 drives the second gear 8074 to rotate. The second gear 8074 drives the other set of L-shaped racks 8073 to move. The other set of L-shaped racks 8073 drives the other set of telescopic plates 8072 to move into the main board 8071, shortening the length of the entire scraper 807. This reduces the area covered by the entire conveying mechanism 8 above the sludge storage silo until the conveying mechanism 8 is blocked by one side of the storage silo and cannot move. At this point, the distance between the conveying mechanism 8 and the other side of the storage silo increases, increasing the space above the conveying mechanism 8 and the other side of the storage silo, making it easier for related mechanical equipment to enter the storage silo from this point.

[0030] Working principle: The hull 1 is driven to the point where the river is blocked by silt. Then, the hydraulic cylinder 3 pushes the adjusting rod 2, causing the adjusting rod 2, along with the dredging pipe 5 and the net cover 4, to rotate downwards until the net cover 4 is submerged in the silt. Then, the silt conveying pump 6 is started, and the silt in the river is pumped into the dredging pipe 5 through the net cover 4. The silt flows through the dredging pipe 5 and the silt conveying pump 6 into the silt dewatering device 7. The silt dewatering device 7 dewaters the silt, and the dewatered silt becomes soil. The soil falls onto the conveyor belt 804 of the conveying mechanism 8. At this time, the motor drives a set of drive shafts 801 to rotate, and the set of drive shafts 801 drives the corresponding... The transmission sleeve 802 rotates, causing the conveyor belt 804 to move in a circular motion around the two sets of transmission sleeves 802. The arrow in the lower attachment 2 indicates the direction of the circular motion. The soil is conveyed by the conveyor belt 804 and falls into the sludge storage bin. At the same time, the rotating transmission sleeve 802 drives the two sets of sprockets 805 to rotate. The sprockets 805 drive the chain 806, the connecting seat 808, and the four sets of scrapers 807 to move in a circular motion. As the soil is continuously fed into the sludge storage bin, the height of the soil pile will approach the scraper 807. The scraper 807 scrapes away the soil that exceeds the height of the scraper 807 and pushes the soil towards the sludge dewatering device 7. During the circular motion of the sprocket 805 driving the chain 806, connecting seat 808, and four sets of scrapers 807, one end of the pressure bearing shaft 8082 on the connecting seat 808 slides tightly against the side plate 803. When the scraper 807 approaches the top of the partition plate 101, one end of the pressure bearing shaft 8082 is pushed by the chamfered surface of one end of the pad 8031, causing the pressure bearing shaft 8082 to slide along the guide hole 811 toward the inside of the seat body 8081. At the same time, the pressure bearing shaft 8082 drives the movable head 8083 to move toward the inside of the screw-fit sleeve 8084, and the movable head 8083 compresses the spring 8085. Simultaneously, the movable head 8083 drives the two sets of convex shafts. 831 squeezes the wall of the spiral groove 841, causing the rotating sleeve 8084 and the first gear 8086 to rotate. The rotating first gear 8086 drives the scraper 807 to rotate through meshing with the gear shaft 8087 until one end of the pressure shaft 8082 is offset from the chamfered surface of one end of the pad strip 8031. At this time, the scraper 807 rotates 90 degrees and the scraper 807 is perpendicular to the scraper 102 on the partition plate 101. Therefore, the scraper 102 scrapes off the dirt attached to the scraper 807 until one end of the pressure shaft 8082 is offset from the entire pad strip 8031. Under the rebound force of the spring 8085, the scraper 807 returns to its original state. Before unloading the sludge from the sludge storage bin, the screw 810 is driven by a motor to rotate, causing the internal threaded tube 809 to move the two sets of side plates 803 toward one side of the sludge storage bin. The two sets of side plates 803 drive the transmission sleeve 802 to slide along the drive shaft 801, causing the entire conveying mechanism 8 to shift toward one side of the sludge storage bin. At the same time, a set of telescopic plates 8072 on the scraper 807 is squeezed by one side of the sludge storage bin, causing the set of telescopic plates 8072 to be pushed into the main plate 8071. Simultaneously, the set of telescopic plates 8072 pushes the corresponding L-shaped rack. 8073 moves toward another set of telescopic plates 8072, and the L-shaped rack 8073 stretches the rubber strip 8075. The moving L-shaped rack 8073 drives the second gear 8074 to rotate. The second gear 8074 drives another set of L-shaped racks 8073 to move. The other set of L-shaped racks 8073 drives another set of telescopic plates 8072 to move into the main plate 8071, shortening the length of the entire scraper 807. This reduces the area covered by the entire conveying mechanism 8 above the sludge storage bin until the conveying mechanism 8 is blocked by one side inside the storage bin and cannot move.

[0031] 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 illustrative of the principles of 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 hydraulic engineering dredging apparatus comprising a hull (1), characterised in that: An adjusting rod (2) is hinged to the stern of the hull (1). The upper end of the adjusting rod (2) is hinged to the upper end of the hydraulic cylinder (3), and the lower end of the hydraulic cylinder (3) is hinged to the stern of the hull (1). The lower end of the adjusting rod (2) is fixedly connected to the mesh cover (4). The mesh cover (4) is connected to the sludge cleaning pipe (5). The sludge cleaning pipe (5) is fixedly installed on the adjusting rod (2). One end of the sludge cleaning pipe (5) is connected to the inlet of the sludge conveying pump (6). The outlet of the sludge conveying pump (6) is connected to the feed end of the sludge dewatering device (7). A conveying mechanism (8) is provided below the discharge end of the sludge dewatering device (7). The conveying mechanism (8) includes: Two sets of drive shafts (801) are rotatably mounted inside the hull (1); A transmission sleeve (802) fitted onto the drive shaft (801); Conveyor belts (804) surrounding the two sets of said drive sleeves (802); Two sets of side plates (803) and two sets of transmission sleeves (802) are rotatably connected to the side plates (803). The two sets of side plates (803) are symmetrically distributed on both sides of the conveyor belt (804). Both ends of the two sets of transmission sleeves (802) are fixedly fitted with sprockets (805); Two sets of chains (806) are sleeved on two sets of sprockets (805), and the chains (806) mesh with the two sets of sprockets (805). Four sets of scrapers (807), the scrapers (807) are fixedly connected to two sets of connecting seats (808), and the two sets of connecting seats (808) are respectively connected to two sets of chains (806); The hull (1) is provided with a bulkhead (101); The connector (808) includes: A base (8081) is provided, and a chain (806) is fixedly connected to one side of the base (8081). Rotate the screw sleeve (8084) installed in the seat (8081). The movable head (8083) is movably connected to the screw-on sleeve (8084); A spring (8085) is located inside a screw-fit sleeve (8084), one end of a movable head (8083) is in close contact with the spring (8085), and the spring (8085) is located between the screw-fit sleeve (8084) and the movable head (8083); The pressure shaft (8082) is fixedly connected to the other end of the movable head (8083); The first gear (8086) is fixedly mounted on the screw sleeve (8084); A gear shaft (8087) meshes with the first gear (8086), and a scraper (807) is fixedly connected to the outer ring of the gear shaft (8087). A guide hole (811) is provided on the other side of the base (8081), and the pressure bearing shaft (8082) is movably inserted into the guide hole (811). The gear shaft (8087) is rotatably mounted on the seat (8081), and one end of the pressure bearing shaft (8082) is tightly attached to the side plate (803). The side plate (803) is provided with a pad (8031) for pushing the pressure bearing shaft (8082), and a scraper (102) is fixedly installed on the upper end of the partition plate (101), with the pad (8031) located above the scraper (102); The swivel sleeve (8084) has two sets of spiral grooves (841), and the outer ring of the movable head (8083) has two sets of convex shafts (831), which are respectively located in the two sets of spiral grooves (841).

2. A hydraulic works dredging apparatus according to claim 1, characterised in that: The scraper (807) includes: Main board (8071), the connector (808) is fixedly connected to the main board (8071); Two sets of telescopic plates (8072) are respectively plugged into both ends of the main board (8071); An L-shaped rack (8073) is fixedly connected to one end of the telescopic plate (8072); The second gear (8074) is rotatably mounted inside the main board (8071) and meshes with two sets of L-shaped racks (8073). A rubber strip (8075) is fixedly connected to one end of the L-shaped rack (8073).

3. The dredging equipment for water conservancy projects according to claim 2, characterized in that: The conveying mechanism (8) also includes an internally threaded tube (809), and both sets of side plates (803) are fixedly connected to the internally threaded tube (809). The internally threaded tube (809) is screwed to a screw rod (810), and the screw rod (810) is rotatably installed inside the hull (1).

4. The dredging equipment for water conservancy projects according to claim 3, characterized in that: The transmission sleeve (802) has a built-in rectangular through hole (8021), and the drive shaft (801) is slidably connected to the rectangular through hole (8021).

5. The dredging equipment for water conservancy projects according to claim 4, characterized in that: One end of the rubber strip (8075) is fixedly connected to the inner wall of the main board (8071).

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