A riverbed dredging device

Abstract

The present invention provides a riverbed dredging device, which relates to the technical field of water conservancy projects. The device includes a dredging ship. A digging bucket is arranged on one side of the dredging ship in a lifting manner. An opening is formed at the bottom of the digging bucket. A mud discharge port is formed at the top of the side of the digging bucket facing the dredging ship. A control cylinder is arranged vertically on the digging bucket. A lifting seat is slidably arranged in the digging bucket. A closing plate is rotatably arranged on the lifting seat. A rotating motor is arranged on the bottom surface of the lifting seat. A limiting convex rod is arranged on the side surface of the telescopic end of the closing plate. Vertically grooves, a first arc transition groove, a horizontal groove, a second arc transition groove and an inclined groove are sequentially formed on the inner side wall of the digging bucket. The two ends of the first arc transition groove are respectively communicated with the bottom end of the vertical groove and the first end of the horizontal groove. The two ends of the second arc transition groove are respectively communicated with the second end of the horizontal groove and the bottom end of the inclined groove. The limiting convex rod is slidably arranged in the vertical groove, the first arc transition groove, the horizontal groove, the second arc transition groove and the inclined groove. The present invention can reduce the preparatory work before dredging and improve the dredging efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and more particularly to a riverbed dredging device. Background Art

[0002] China is a country with many rivers. Waterway transportation, as a low-cost transportation mode, is widely used in the domestic water transportation industry in many waters. However, due to external factors such as water flow velocity and structure stagnation, the riverbed undulates, forming shoals and deep troughs, and the navigability of the river channel is restricted. To ensure the normal passage of the waterway, dredging work needs to be carried out on the river channel.

[0003] Currently, the existing dredging methods for shoal river channels in China mainly use the dredger for dredging. The dredger relies on the movement of water to excavate and transport the underwater soil. It mechanically cuts the underwater soil layer to loosen it, mixes the sediment with water to form a muddy water mixture with a certain concentration, and then sucks it out through the vacuum generated by the mud pump and transports it to the sediment discharge site through the discharge pipe. When using the dredger for dredging, taking advantage of the high tide level, the dredger enters the location that needs to be dredged, excavates and transports the silt on the riverbed, transports the silt to the auxiliary flat boat, and transports the silt to the designated location, and stops dredging at low tide.

[0004] The dredging method of the dredger has the following defects. Before dredging, it is necessary to cut the underwater silt and then stir it so that the sediment and water are mixed to form a muddy water mixture with a certain concentration before dredging operations can be carried out. When the dredger moves to the next dredging point, the above steps still need to be repeated. This makes the preparation steps before dredging operations numerous and the efficiency low. Summary of the Invention

[0005] The purpose of the present invention is to provide a riverbed dredging device that can reduce the preparation work before dredging and improve the dredging efficiency.

[0006] The present invention is achieved through the following technical solutions: A riverbed dredging device includes a dredging ship. A digging bucket is vertically arranged on one side of the dredging ship. An opening is formed at the bottom of the digging bucket. A mud discharge port is formed at the top of the side of the digging bucket facing the dredging ship. A control cylinder is vertically arranged on the digging bucket. A lifting seat is slidably arranged in the digging bucket. The top surface of the lifting seat is connected to the piston rod of the control cylinder. A closing plate is rotatably arranged at the bottom surface of the lifting seat. The rotation axis of the closing plate is horizontally arranged along the length direction of the lifting seat. A rotation motor is arranged at the bottom surface of the lifting seat. The rotation motor drives the closing plate to rotate around the rotation axis. The bottom end of the closing plate is telescopically arranged. A limiting convex rod is arranged on the side surface of the telescopic end of the closing plate. Vertically arranged grooves, first arc-shaped transition grooves, horizontal grooves, second arc-shaped transition grooves and inclined grooves are successively formed on the inner side wall of the side surface of the digging bucket. The two ends of the first arc-shaped transition groove are respectively communicated with the bottom end of the vertical groove and the first end of the horizontal groove. The two ends of the second arc-shaped transition groove are respectively communicated with the second end of the horizontal groove and the bottom end of the inclined groove. The vertical groove is located at the position on the side surface of the digging bucket far from the dredging ship. The inclined groove is located at the position on the side surface of the digging bucket close to the dredging ship. The top end of the inclined groove is higher than the bottom edge of the mud discharge port. The limiting convex rod is slidably arranged in the vertical groove, the first arc-shaped transition groove, the horizontal groove, the second arc-shaped transition groove and the inclined groove.

[0007] Further, the inclined groove is inclined along the direction away from the dredging ship from the top end to the bottom end.

[0008] Further, a cavity is formed inside the closing plate. An adjustment opening is formed at the bottom of the closing plate. A telescopic plate is slidably arranged inside the closing plate. The telescopic plate passes through the adjustment opening. The limiting convex rod is arranged on the side surface of the telescopic plate.

[0009] Further, a spring is arranged at the top end of the telescopic plate. The top end of the spring is fixedly connected to the top end of the cavity.

[0010] Further, a conveyor belt is arranged between the digging bucket and the dredging ship. A sliding groove is formed on the side surface of the conveyor belt along the length direction of the conveyor belt. A fixing rod is arranged at the end of the dredging ship. The fixing rod is slidably arranged in the sliding groove. The first end of the conveyor belt is rotatably connected to the side of the digging bucket close to the dredging ship. The first end of the conveyor belt is located below the mud discharge port. The second end of the conveyor belt is located inside the dredging ship.

[0011] Further, a folding guiding end bucket is arranged between the first end of the conveyor belt and the surface of the digging bucket.

[0012] Furthermore, a folding plate is provided between the top surface of the lifting seat and the top end of the digging bucket.

[0013] Furthermore, a floating seat is provided at the top end of the folding plate. The density of the floating seat is less than that of water, and the top end of the folding plate is fixedly connected to the bottom surface of the floating seat.

[0014] Furthermore, a limiting rod is vertically provided on the top surface of the lifting seat, a limiting hole is formed at the top end of the digging bucket, the limiting rod slidably penetrates through the limiting hole, and the limiting rod abuts against the inner wall of the folding plate.

[0015] Furthermore, a mud scraping plate is provided at the bottom edge of the mud discharge port, and the mud scraping plate abuts against the top surface of the conveyor belt.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0017] 1. By providing a curved sliding track groove and a movable closing plate in the digging bucket, the present invention uses the closing plate to push the sediment to move in the digging bucket and finally discharge it from the mud discharge port, reducing the preparatory work before the dredging operation, accelerating the dredging speed, and improving the dredging efficiency.

[0018] 2. By movably arranging the conveyor belt, the conveyor belt can automatically adjust its posture according to the different functions of the bucket, which is beneficial to accelerating the speed of the dredging work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the dredging state of the present invention;

[0020] Figure 2 is a schematic structural diagram of the present invention for showing the connection between the digging bucket and the inlet and outlet buckets;

[0021] Figure 3 is a schematic structural diagram of the end of the dredging ship of the present invention;

[0022] Figure 4 is a schematic structural diagram of the digging bucket of the present invention;

[0023] Figure 5 is a schematic structural diagram of the assembly relationship between the lifting seat and the closing plate of the present invention;

[0024] Figure 6 is Figure 5 an enlarged schematic diagram of part A in

[0025] Figure 7 is Figure 5 an enlarged schematic diagram of part B in

[0026] Figure 8 is a schematic structural diagram of the inner wall of the digging bucket of the present invention for showing;

[0027] Figure 9 Schematic diagram of the sludge discharging state of the present invention;

[0028] Reference numerals: 1 - dredger; 11 - mud loading tank; 12 - filter plate; 13 - rodless cylinder; 14 - support frame; 15 - lifting cylinder; 16 - conveyor belt; 161 - sliding groove; 17 - fixed rod; 18 - limiting support rod; 19 - folding guiding end bucket; 100 - mud scraping plate; 2 - digging bucket; 21 - sludge discharging port; 22 - inlet and outlet bucket; 221 - hinge shaft; 23 - control cylinder; 24 - lifting seat; 241 - limiting rod; 25 - limiting hole; 26 - folding plate; 27 - floating seat; 28 - closing plate; 281 - cavity; 29 - rotating motor; 200 - bevel gear; 210 - telescopic plate; 211 - spring; 212 - limiting convex rod; 220 - vertical groove; 230 - first arc transition groove; 240 - horizontal groove; 250 - second arc transition groove; 260 - inclined groove. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment

[0032] The following is a reference to Figures 1-9 As shown, further described in combination with specific embodiments. This embodiment provides a riverbed dredging device. Referring to Figure 1 As shown, it includes a dredger 1. A mud loading tank 11 is provided inside the dredger 1. A sewage pump and a drain pipe are installed on the dredger 1. The input end of the sewage pump is communicated with the mud loading tank 11, and the output end of the sewage pump is installed on the drain pipe. A filter plate 12 is arranged on one side of the mud loading tank 11. The filter plate 12 is arranged at the input end of the sewage pump for separating mud and sand from sewage.

[0033] Refer to Figure 1 and Figure 2As shown in the figure, a rodless cylinder 13 is installed on the top surface of the dredger 1, and the rodless cylinder 13 extends along the length direction of the mud loading trough 11. A support frame 14 is installed on the piston of the rodless cylinder 13. At one end of the support frame 14 away from the dredger 1, a lifting cylinder 15 is vertically installed, and a digging bucket 2 is fixedly installed on the piston rod of the lifting cylinder 15. The digging bucket 2 is arranged in a cuboid shape, and the inside of the digging bucket 2 is hollow. The bottom edge of the digging bucket 2 is sharp, so as to facilitate insertion into the underwater silt. The first surface of the digging bucket 2 faces the dredger 1, and a mud discharge port 21 is opened in the first surface of the digging bucket 2. The mud discharge port 21 is located at the top of the digging bucket 2 and extends along the length direction of the digging bucket 2. An inlet / outlet bucket 22 is arranged on the surface of the digging bucket 2 where the mud discharge port 21 is located. The inlet / outlet bucket 22 is provided with a communication port, and the edge of the communication port of the inlet / outlet bucket 22 is inclined, so as to facilitate the mud and sand in the digging bucket 2 to flow out from the mud discharge port 21. A hinge shaft 221 is arranged on the inlet / outlet bucket 22.

[0034] Refer to Figures 1 to 3 As shown in the figure, a conveyor belt 16 is also slidably installed on the dredger 1. Fixed rods 17 are oppositely arranged at the end of the mud loading trough 11 away from the dredger 1, and the fixed rods 17 are arranged horizontally. A sliding groove 161 is opened on the side surface of the conveyor belt 16, and the sliding groove 161 extends along the length direction of the conveyor belt 16. The shape of the sliding groove 161 is a waist-shaped groove. The fixed rod 17 is arranged in the sliding groove 161, and the cross section of the end of the fixed rod 17 is circular. A connecting ear is arranged at the first end of the conveyor belt 16, and the connecting ear is rotatably connected with the hinge shaft 221. The height of the first end of the conveyor belt 16 is lower than the bottom edge of the mud discharge port 21. A limiting support rod 18 is convexly arranged on the side surface of the dredger 1, and the limiting support rod 18 is located below the fixed rod 17. The end of the limiting support rod 18 is inclined, and the end of the limiting support rod 18 abuts against the bottom surface of the conveyor belt 16 to limit the inclination angle of the conveyor belt 16.

[0035] Refer to Figure 1 and Figure 2 As shown in the figure, a folding guiding end bucket 19 is further arranged between the first end of the conveyor belt 16 and the inlet / outlet bucket 22. The folding guiding end bucket 19 is used to prevent the mud and sand from falling from the connection between the conveyor belt 16 and the inlet / outlet bucket 22. A scraping plate 100 is arranged on one side edge of the folding guiding end bucket 19 close to the conveyor belt 16, and the scraping plate 100 abuts against the top surface of the conveyor belt 16. When discharging the mud and sand from the dredger 1, the conveyor belt 16 is used to transport the mud and sand to the mud discharge port 21. The scraping plate 100 is used to separate the mud and sand from the surface of the conveyor belt 16, so that the mud and sand enter the digging bucket 2 from the mud discharge port 21.

[0036] When the rodless cylinder 13 drives the support frame 14 to move along the end of the dredger 1 and into the interior of the dredger 1, the fixed rod 17 slides relative to the sliding groove 161, so that the conveyor belt 16 is parallel and located above the mud loading trough 11. When the support frame 14 is at the end of the dredger 1 and the lifting cylinder 15 drives the bucket 2 to descend until the bottom end of the bucket 2 is inserted into the silt, the first end of the conveyor belt 16 is driven by the bucket 2 to rotate around the hinge shaft 221 during the descending process of the bucket 2, and the fixed rod 17 rotates relative to the sliding groove 161, so that the first end of the conveyor belt 16 is lower than the edge of the mud loading trough 11.

[0037] Refer to Figure 4 As shown, a control cylinder 23 is fixedly installed at the top of the bucket 2. The control cylinder 23 is vertically arranged, and the piston rod of the control cylinder 23 passes through the top surface of the bucket 2. The second surface of the bucket 2 is opposite to the first surface, and the second surface of the bucket 2 is vacant. A lifting seat 24 is arranged in a lifting manner at the second surface of the bucket 2, and the lifting seat 24 extends along the length direction of the bucket 2. A plurality of limiting rods 241 are vertically arranged on the top surface of the lifting seat 24, and the length of the limiting rods 241 is greater than the maximum distance between the lifting seat 24 and the top of the bucket 2. A plurality of limiting holes 25 are formed in the top surface of the bucket 2, and the limiting rods 241 are respectively inserted into the limiting holes 25. A folding plate 26 is further arranged at the edge of the top surface of the lifting seat 24, and the inner wall of the folding plate 26 abuts against the limiting rods 241. The top end of the folding plate 26 is fixedly provided with a floating seat 27, and the density of the floating seat 27 is less than the density of water.

[0038] Refer to Figures 5 to 7 As shown, a rotating shaft is arranged on the bottom surface of the lifting seat 24 along the length direction of the lifting seat 24, and a closing plate 28 is rotatably installed on the rotating shaft. The closing plate 28 is used to close the second surface of the bucket 2. Two bevel gears 200 are arranged at both ends of the top of the closing plate 28. A rotating motor 29 is installed on the bottom surface of the lifting seat 24, and a bevel gear 200 is also arranged on the output shaft of the rotating motor 29. The two groups of bevel gears 200 are meshed with each other, so that the rotating motor 29 drives the closing plate 28 to rotate around the rotating shaft. An adjustment opening is formed at the bottom end of the closing plate 28, and a cavity 281 is formed inside the closing plate 28. The adjustment opening is communicated with the cavity 281 of the closing plate 28. A telescopic plate 210 is slidably installed inside the closing plate 28. A spring 211 is fixedly installed at the top of the telescopic plate 210, and the top end of the spring 211 is fixedly connected with the top surface of the cavity 281. Leakage holes are formed through the surfaces of the closing plate 28 and the telescopic plate 210. A limiting convex rod 212 is convexly arranged on the side surface of the telescopic plate 210.

[0039] Refer to Figure 8As shown in the figure, on the opposite sides of the bucket 2, there are provided a vertical groove 220, a first arc transition groove 230, a horizontal groove 240, a second arc transition groove 250, and an inclined groove 260. The vertical groove 220 is close to the second side of the bucket 2 and is vertically provided. One end of the first arc transition groove 230 communicates with the bottom end of the vertical groove 220, and the other end of the first arc transition groove 230 communicates with one end of the horizontal groove 240. The horizontal groove 240 extends along the width direction of the bucket 2, and the other end of the horizontal groove 240 communicates with one end of the second arc transition groove 250. The other end of the second arc transition groove 250 communicates with the bottom end of the inclined groove 260. The bottom end of the inclined groove 260 is farther from the first side of the bucket 2 than the top end of the inclined groove 260, and the top end of the inclined groove 260 is higher than the bottom edge of the mud discharge port 21.

[0040] The working process of this embodiment is as follows: Refer to Figure 1 As shown in the figure, when the dredger 1 is performing dredging operations on underwater sediment, control the rodless cylinder 13 to move the support frame 14 towards the end of the dredger 1. Control the lifting cylinder 15 to place the bucket 2 underwater until the bottom edge of the bucket 2 is inserted into the sediment. During the descent of the bucket 2, the bucket 2 drives the conveyor belt 16 to change from a horizontal state to an inclined state. Drive the control cylinder 23 to drive the lifting seat 24 to descend, and the lifting seat 24 drives the closing plate 28 and the telescopic plate 210 to descend until the bottom edge of the telescopic plate 210 is inserted into the sediment. During this process, the limiting convex rod 212 on the side of the telescopic plate 210 slides along the vertical groove 220 to the connection of the first arc transition groove 230.

[0041] Continue to drive the piston rod of the control cylinder 23 to descend, and at the same time control the rotation motor 29 to drive the closing plate 28 to rotate around the rotation axis, so that the limiting convex rod 212 slides along the first arc transition groove 230 and the horizontal groove 240 until it moves to the connection of the second arc transition groove 250 and the inclined groove 260. At this time, the closing plate 28 and the telescopic plate 210 close the bottom opening of the bucket 2, making the sediment located inside the bucket 2.

[0042] Keep the rotation angle of the rotation motor 29 unchanged, drive the piston rod of the control cylinder 23 to rise, and the limiting convex rod 212 on the side of the telescopic plate 210 slides along the inclined groove 260. The telescopic plate 210 and the closing plate 28 drive the sediment inside the bucket 2 to move to the mud discharge port 21, and the sediment is transferred to the mud loading tank 11 through the mud discharge port 21 by using the conveyor belt 16. In the dredger 1, a sewage pump is used to discharge the water in the sediment through the drain pipe.

[0043] Refer to Figure 9As shown, when the dredger 1 discharges sediment into the river channel, the digging bucket 2 is raised to a height higher than that of the mud loading trough 11, so that the height of the first end of the conveyor belt 16 is higher than that of the other end. The sediment is transferred onto the conveyor belt 16, and the conveyor belt 16 is controlled to rotate in the reverse direction. The conveyor belt 16 transfers the sediment to the inlet and outlet bucket 22, and the sediment on the surface of the conveyor belt 16 is scraped off by the mud scraping plate 100, so that the sediment passes through the inlet and outlet bucket 22 and enters the digging bucket 2, and finally descends to the bottom of the water towards the bottom opening of the digging bucket 2.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A riverbed dredging device, characterized in that, It includes a dredger (1), on one side of which a digging bucket (2) is arranged in a lifting manner. An opening is formed at the bottom of the digging bucket (2), and a mud discharge port (21) is formed at the top of the side of the digging bucket (2) facing the dredger (1). A control cylinder (23) is vertically arranged on the digging bucket (2). A lifting seat (24) is slidably arranged in the digging bucket (2). The top surface of the lifting seat (24) is connected to the piston rod of the control cylinder (23). A closing plate (28) is rotatably arranged at the bottom surface of the lifting seat (24), and the rotation axis of the closing plate (28) is horizontally arranged along the length direction of the lifting seat (24). A rotation motor (29) is arranged at the bottom surface of the lifting seat (24). The rotation motor (29) drives the closing plate (28) to rotate around the rotation axis. The bottom end of the closing plate (28) is telescopically arranged, and a limiting convex rod (212) is arranged on the side surface of the telescopic end of the closing plate (28). Vertically arranged grooves (220), first arc-shaped transition grooves (230), horizontally arranged grooves (240), second arc-shaped transition grooves (250) and inclined grooves (260) are sequentially formed on the inner wall of the side surface of the digging bucket (2). The two ends of the first arc-shaped transition groove (230) are respectively communicated with the bottom end of the vertically arranged groove (220) and the first end of the horizontally arranged groove (240). The two ends of the second arc-shaped transition groove (250) are respectively communicated with the second end of the horizontally arranged groove (240) and the bottom end of the inclined groove (260). The vertically arranged groove (220) is located at a position on the side surface of the digging bucket (2) far from the dredger (1), and the inclined groove (260) is located at a position on the side surface of the digging bucket (2) close to the dredger (1). The top end of the inclined groove (260) is higher than the bottom edge of the mud discharge port (21). The limiting convex rod (212) is slidably arranged in the vertically arranged groove (220), the first arc-shaped transition groove (230), the horizontally arranged groove (240), the second arc-shaped transition groove (250) and the inclined groove (260).

2. The riverbed dredging device according to claim 1, characterized in that, The inclined groove (260) is inclined along the direction away from the dredger (1) from the top end to the bottom end.

3. The riverbed dredging device according to claim 1, characterized in that, A cavity (281) is formed inside the closing plate (28). An adjustment opening is formed at the bottom of the closing plate (28). A telescopic plate (210) is slidably arranged inside the closing plate (28). The telescopic plate (210) passes through the adjustment opening, and the limiting convex rod (212) is arranged on the side surface of the telescopic plate (210).

4. The riverbed dredging device according to claim 3, characterized in that, A spring (211) is arranged at the top end of the telescopic plate (210). The top end of the spring (211) is fixedly connected to the top end of the cavity (281).

5. The riverbed dredging device according to claim 1, characterized in that A conveyor belt (16) is provided between the digging bucket (2) and the dredging ship (1). A sliding groove (161) is formed along the length direction on the side surface of the conveyor belt (16). A fixed rod (17) is provided at the end of the dredging ship (1), and the fixed rod (17) is slidably arranged in the sliding groove (161). The first end of the conveyor belt (16) is rotatably connected to the surface of the digging bucket (2) close to the dredging ship (1). The first end of the conveyor belt (16) is located below the mud discharge port (21), and the second end of the conveyor belt (16) is located inside the dredging ship (1).

6. The riverbed dredging device according to claim 5, characterized in that, A folding guiding end bucket (19) is provided between the first end of the conveyor belt (16) and the surface of the digging bucket (2).

7. The riverbed dredging device according to claim 1, characterized in that, A folding plate (26) is provided between the top surface of the lifting seat (24) and the top end of the digging bucket (2).

8. The riverbed dredging device according to claim 7, characterized in that, A floating seat (27) is provided at the top end of the folding plate (26). The density of the floating seat (27) is less than that of water. The top end of the folding plate (26) is fixedly connected to the bottom surface of the floating seat (27).

9. The riverbed dredging device according to claim 8, characterized in that, A limiting rod (241) is vertically arranged on the top surface of the lifting seat (24). A limiting hole (25) is formed at the top end of the digging bucket (2). The limiting rod (241) is slidably inserted through the limiting hole (25), and the limiting rod (241) abuts against the inner wall of the folding plate (26).

10. The riverbed dredging device according to claim 5, characterized in that, A mud scraping plate (100) is provided at the bottom edge of the mud discharge port (21), and the mud scraping plate (100) abuts against the top surface of the conveyor belt (16).

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