Automatic sundry cleaning platform device of trailing suction dredger

Abstract

The invention relates to an automatic sundry cleaning platform device of a trailing suction dredger. Comprising a fixed platform plate and a movable platform plate which are hinged through a hinge. Moving bases are arranged on the two sides of the fixed platform plate, a moving cross beam is installed between the two moving bases, a plurality of pushing blocks are installed on the rear portion of the moving cross beam, the bottom face of each pushing block is flush with the top face of the fixed platform plate, and a translation driving assembly for driving the moving bases to move front and back is further installed at the bottom of the fixed platform plate. A swing driving assembly for driving the movable platform plate to swing up and down is mounted at the tail of the ship; a receiving box body is installed at the tail of the ship and below the movable platform plate, a throwing window is formed in the bottom of the rear wall of the receiving box body, and a throwing wheel is installed in the receiving box body. The device has the capacity of transferring peeled sundries from the ship to a water area where the sundries are located, manpower consumption during sundry cleaning operation is reduced, and the construction interest rate of the trailing suction dredger is guaranteed by improving the sundry cleaning efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of dredging construction equipment, and in particular relates to an automatic debris-clearing platform device for trailing suction hopper dredgers. Background Technology

[0002] A trailing suction hopper dredger (LTH) is a type of construction vessel used in dredging projects. It is a large, self-propelled, hopper-type dredger equipped with a scraper head and a hydraulic suction system. During dredging, the scraper head is lowered to the riverbed, and the vacuum effect of the mud pump draws slurry from the riverbed through the scraper head and suction pipe into the dredger's hopper. Once the hopper is full, the dredger raises its scraper head and sails to the dumping area for unloading, or directly discharges the dredged slurry overboard. The operation of a LHT involves a significant amount of cleaning work. Specifically, when the scraper head is scraping and suctioning on the muddy surface of the riverbed, rocks, wooden stakes, large pieces of debris, large clumps of mud, fishing nets, etc., can become stuck on the scraper teeth. As the mud pump continues to suction, some debris can also clog the suction inlet grille. When these situations occur, the scraper head's suction capacity decreases, and in severe cases, it may be unable to continue scraping and suction. This can be determined by monitoring the slurry concentration on the vessel. When the above conditions occur, it is necessary to lift the rake head onto the ship's deck for cleaning work.

[0003] When cleaning the scraper head, debris needs to be separated from it to restore its suction hopper operation. The debris falls onto the ship's deck and undergoes initial sorting (e.g., separating fishing nets and garbage). Typically, boulders and other debris need to be thrown back into the water. After cleaning the scraper head, it is lowered back to the bottom to continue suction hopper operations. Currently, because suction hopper dredgers lack any auxiliary debris cleaning facilities, this work must be done manually. Specifically, after the debris is removed from the scraper head, the sorted boulders and mud are manually moved off the deck and thrown back into the water, which is labor-intensive and affects the efficiency of the dredger's work. Therefore, it is necessary to develop and design a debris cleaning facility suitable for suction hopper dredgers to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic debris-clearing platform device for trailing suction hopper dredgers, which is configured on the dredger and has the ability to transfer loose debris from the vessel to the water area, thereby reducing the manpower required for debris clearing operations and ensuring the efficiency of the trailing suction hopper dredger's operation by improving the efficiency of debris clearing.

[0005] The technical solution adopted by this invention is as follows: an automatic debris-clearing platform device for a trailing suction hopper dredger, comprising a fixed platform plate and a movable platform plate connected by hinges, the movable platform plate being located behind the fixed platform plate; movable seats are provided on both sides of the fixed platform plate and a movable crossbeam is installed between the two movable seats; multiple push blocks are installed at the rear of the movable crossbeam, the bottom surface of each push block being flush with the top surface of the fixed platform plate; a translation drive assembly for driving the movable seats to move back and forth is also installed at the bottom of the fixed platform plate; a swing drive assembly for driving the movable platform plate to swing up and down is installed at the stern of the vessel; a receiving box is installed at the stern of the vessel, below the movable platform plate, a spraying window is provided at the bottom of the rear wall of the receiving box, and a spraying wheel is installed inside the receiving box.

[0006] Preferably, there are three push blocks, left, center and right, and the back is fixedly connected to the moving crossbeam with bolts; the front of each push block has a wedge-shaped plane, and the width of the outer side of the two push blocks on both sides is greater than the width of the inner side.

[0007] Preferably, the translation drive assembly includes a lead screw mounted and fixed below the fixed platform plate and a drive motor for driving the lead screw. A connecting plate is mounted and fixed between the bottoms of the two moving seats, and a moving block located on the lead screw is fixedly connected to the middle of the connecting plate.

[0008] Preferably, slide rails are installed on both sides of the fixed platform plate, and a support platform is provided in the lower middle part of the inner side of the movable seat. A slider is installed on the support platform, and the slider slides along the slide rail on its side.

[0009] Preferably, side guard plates are installed on both sides of the fixed platform plate and the movable platform plate, and a strip space is provided inside the movable seat for the side guard plates to pass through.

[0010] Preferably, a drain hole is provided on the fixed platform plate; a vibration motor is installed at the bottom of the movable platform plate.

[0011] Preferably, the swing drive assembly is a swing hydraulic cylinder, with a connecting base at the stern of the ship and the bottom of the movable platform plate. The rear end of the cylinder body of the swing hydraulic cylinder is hinged to the connecting base at the stern of the ship, and the front end of the piston rod of the swing hydraulic cylinder is hinged to the connecting base at the bottom of the movable platform plate.

[0012] Preferably, the spraying wheel includes two opposing axle seats, a rotating shaft is installed between the two axle seats, and three support plates (left, center, and right) are installed on the rotating shaft. Multiple first spraying scrapers with equal circumferential angles are installed between the two support plates on the left side, and multiple second spraying scrapers with equal circumferential angles are installed between the two support plates on the right side. The first and second spraying scrapers are arranged in a V-shape.

[0013] Preferably, support blocks are provided at the four corners of the bottom of the fixed platform plate, and the bottom of each support block is fixedly connected to the ship deck.

[0014] The advantages and positive effects of this invention are as follows: This invention provides an automatic debris-clearing platform device for trailing suction hopper dredgers, applied to the aft deck of the dredger. During cleaning operations, the dredger's rake head is lifted to the top of this platform device by the ship's crane, and the debris dislodged by the rake head falls onto a fixed platform plate. After initial sorting of the debris, the translation drive assembly is activated, and each pusher moves along the fixed platform plate from front to back, pushing the debris onto a movable platform plate. The swing drive assembly causes the movable platform plate to swing downwards at a certain angle to form a slope, causing boulders to slide off. Further downward swinging of the movable platform plate, combined with vibration, causes lighter and more viscous mud and clods to fall into the receiving box and, under the action of the throwing wheel, to be thrown towards the stern of the ship through the throwing window. Therefore, the platform device of this invention has the ability to transfer dislodged debris from the ship to the surrounding waters, reducing the manpower required for debris clearing operations and ensuring the efficiency of the trailing suction hopper dredger's operations by improving the efficiency of debris clearing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the main body of the invention, from a top view.

[0017] Figure 3 This is a three-dimensional structural diagram of the main body of the invention, from a lower perspective;

[0018] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure at position AA in the middle;

[0019] Figure 5 yes Figure 1 A three-dimensional structural diagram of the spraying wheel.

[0020] In the picture:

[0021] 1. Drive motor; 2. Support pier; 3. Movable seat; 4. Side guard plate; 5. Lead screw; 6. Slide rail; 7. Fixed platform plate; 8. Hinge; 9. Swinging hydraulic cylinder; 10. Vibration motor; 11. Movable platform plate; 12. Receiving box; 13. Spraying wheel; 13-1. Rotating shaft; 13-2. First spraying scraper; 13-3. Support plate; 13-4. Second spraying scraper; 13-5. Shaft seat; 14. Movable crossbeam; 15. Push block; 16. Drain hole; 17. Connecting base; 18. Movable block; 19. Connecting plate; 20. Support platform; 21. Slider. Detailed Implementation

[0022] To further understand the invention's content, features, and effects, the following embodiments are provided for detailed explanation.

[0023] Please see Figure 1 , Figure 2 and Figure 3 The automatic debris-clearing platform device for trailing suction hopper vessels of the present invention includes a fixed platform plate 7 and a movable platform plate 11 hinged together by hinges 8. The movable platform plate 11 is located behind the fixed platform plate 7. As shown in the figure, support blocks 2 are provided at the four corners of the bottom of the fixed platform plate 7. The bottom of each support block 2 is fixedly connected to the ship's deck. Therefore, the fixed platform plate 7 is fixed and has a certain distance between it and the ship's deck. The movable platform plate 11 can swing up and down around the hinges 8.

[0024] Movable seats 3 are provided on both sides of the fixed platform plate 7, and a movable crossbeam 14 is installed between the two movable seats 3. Multiple push blocks 15 are installed at the rear of the movable crossbeam 14. The bottom surface of each push block 15 is flush with the top surface of the fixed platform plate 7. A translation drive assembly for driving the movable seats 3 to move back and forth is also installed at the bottom of the fixed platform plate 7. A swing drive assembly for driving the movable platform plate 11 to swing up and down is installed at the stern of the ship.

[0025] Its operating principle is as follows: When cleaning the rake head device, the rake head device is lifted to the top of the platform device using a ship crane. The debris peeled off by the rake head device falls onto the fixed platform plate 7. The translation drive component is activated, and the moving beam 14 drives each push block 15 to move from front to back. The debris on the fixed platform plate 7 is finally transferred to the movable platform plate 11. The movable platform plate 11 swings down to form a slope, and the debris slides down the slope.

[0026] In this embodiment, three push blocks 15 are provided (left, center, and right), and their backs are fixedly connected to the movable crossbeam 14 with bolts. This allows for replacement of each push block 15 when it experiences excessive wear. It should be ensured that the bottom surface of each push block 15 is flush with the top surface of the fixed platform plate 7 to guarantee the effective pushing of debris onto the fixed platform plate 7. In this embodiment, the front of each push block 15 has a wedge-shaped plane, and the outer width of the two push blocks 15 located on the sides is greater than the inner width, thus forming... Figure 2 The V-shaped, bucket-like structure shown allows debris on the fixed platform plate 7 to be pushed away and gathered towards the center as the moving crossbeam 14 and its push blocks 15 move from front to back.

[0027] In this embodiment, a drain hole 16 is provided on the fixed platform plate 7; a vibration motor 10 is installed at the bottom of the movable platform plate 11. The function of the drain hole 16 is to allow water dripping onto the fixed platform plate 7 during the cleaning operation to pass through the drain hole 16 and fall onto the ship deck and into the drainage channel on the ship deck, thus preventing water accumulation on the fixed platform plate 7. The function of the vibration motor 10 is to provide a certain vibration effect to the movable platform plate 11, so as to promote the sliding and detachment of debris from the movable platform plate 11.

[0028] Please see Figure 3 and Figure 4 It can be seen that:

[0029] The translation drive assembly includes a lead screw 5 mounted and fixed below the fixed platform plate 7 and a drive motor 1 that drives the lead screw 6. A connecting plate 19 is mounted and fixed between the bottoms of the two movable seats 3, and a movable block 18 located on the lead screw 5 is fixedly connected to the middle of the connecting plate 19. The drive motor 1 drives the lead screw 5 to rotate forward or backward, and the movable seats 3 and the movable crossbeam 14 move backward or forward. Correspondingly, each push block 15 moves backward to push away debris or moves forward to reset. Of course, it is conceivable that the translation drive assembly can also be a horizontally mounted long hydraulic cylinder, which can be mounted and fixed on the ship's deck, and the two movable seats 3 can be moved back and forth by the long hydraulic cylinder.

[0030] In this embodiment, slide rails 6 are installed on both sides of the fixed platform plate 7, and a support platform 20 is provided in the lower middle part of the inner side of the movable seat 3. A slider 21 is installed on the support platform 20. The slider 21 slides along the slide rail 6 on this side. By setting the slider 21 to cooperate with the slide rail 6, the stability of the movable seat 3 when it moves horizontally can be improved.

[0031] In this embodiment, side guard plates 4 are installed on both sides of the fixed platform plate 7 and the movable platform plate 11, and a strip-shaped space is provided inside the movable seat 3 for the side guard plates 4 to pass through. The function of the side guard plates 4 is to provide protection from the sides of the fixed platform plate 7 and the movable platform plate 11, preventing debris dislodged by the rake head device during cleaning operations from falling onto the ship deck. Since the side guard plates 4 are located in the strip-shaped space inside the movable seat 3, they will not interfere with the forward and backward movement of the movable seat 3.

[0032] In this embodiment, the swing drive assembly is a swing hydraulic cylinder 9. A connecting base 17 is provided at the stern of the ship and the bottom of the movable platform plate 11. The rear end of the cylinder body of the swing hydraulic cylinder 9 is hinged to the connecting base 17 at the stern of the ship, and the front end of the piston rod of the swing hydraulic cylinder 9 is hinged to the connecting base 17 at the bottom of the movable platform plate 11. Figure 1As shown, the movable platform plate 11 is initially in a horizontal state. When the piston rod of the swing hydraulic cylinder 9 retracts, the movable platform plate 11 swings downward to form a slope. The more the piston rod of the swing hydraulic cylinder 9 retracts, the greater the slope angle formed by the movable platform plate 11.

[0033] A receiving box 12 is installed at the stern of the vessel, below the movable platform 11. A spraying window is provided at the bottom of the rear wall of the receiving box 12, and a spraying wheel 13 is installed inside the receiving box 12. The purpose of the receiving box 12 and the spraying wheel 13 is to handle relatively light and sticky debris such as mud and clods. Under normal circumstances, boulders in the debris will slide down the slope and fall into the water behind the vessel when the movable platform 11 swings down to a certain angle under vibration. However, some light and sticky debris will not slide down smoothly. In this case, the movable platform 11 needs to be adjusted to a larger slope angle and combined with vibration. The light and sticky debris falls down into the receiving box 12. When the spraying wheel 13 rotates, it sprays the debris. The debris is then thrown backward through the spraying window at the rear of the receiving box 12.

[0034] Please see Figure 5 It can be seen that:

[0035] The spraying wheel 13 includes two opposing bearing seats 13-5, which are fixed to the wall of the receiving box 12. A rotating shaft 13-1 is installed between the two bearing seats 13-5. Three support plates 13-3 (left, center, and right) are installed on the rotating shaft 13-1. Multiple first spraying scrapers 13-2 with equal circumferential angles are installed between the two support plates 13-3 on the left side, and multiple second spraying scrapers 13-4 with equal circumferential angles are installed between the two support plates 13-3 on the right side. The first spraying scrapers 13-2 and the second spraying scrapers 13-4 are arranged in a V-shape.

[0036] A hydraulic motor for driving the rotating shaft 13-1 is installed on the outside of the receiving housing 12. The hydraulic motor drives the rotating shaft 13-1 to rotate at high speed. Figure 5 As shown in the diagram, the debris falling from above enters the receiving box 12 through the top opening. The high-speed rotating first and second spraying scrapers 13-2 and 13-4 spray the received debris backward through the spraying window. At the same time, the spraying wheel 13 also plays a certain role in breaking up the debris falling into the box.

[0037] Operating method:

[0038] Initially Figure 1As shown in the diagram; when performing cleaning operations with the suction hopper device, the device is first lifted onto the ship's deck, above the platform, using a ship's crane. The cleaning operation is then performed, and the loose debris falls onto the fixed platform plate 7. Manual sorting of the debris on the platform is required to remove lightweight garbage, fishing nets, etc. (to prevent such debris from returning to the water). Then, the translation drive assembly is activated, and the translation beam 14, carrying each pusher block 15, moves from front to back along the surface of the fixed platform plate 7. During this process, water accumulated on the fixed platform plate 7 is transferred through the drain hole 16 to the deck below the fixed platform plate 7 and enters the drainage ditch on the deck. Finally, the debris is removed from the fixed platform plate. Platform plate 7 is transferred to movable platform plate 11, and then the horizontal beam 14 moves back to its original position along with each pusher block 15. Then, the vibration motor 10 is started, and the piston rod of the swing hydraulic cylinder 9 is operated to retract. The movable platform plate 11 swings downward and forms a certain slope. Under the action of vibration, the rocks on the slope slide off and fall into the water behind the ship. Then, the downward swing angle of the movable platform plate 11 is further adjusted to form a greater slope. Under the action of vibration, light and sticky debris such as mud and mud lumps fall downward into the receiving box 12. Under the action of the throwing wheel 13, the aforementioned debris is thrown out through the throwing window at the rear of the receiving box 12 and falls into the water behind the ship.

Claims

1. An automatic debris-clearing platform device for a trailing suction hopper dredger, characterized in that: The system includes a fixed platform plate (7) and a movable platform plate (11) that are hinged together by hinges (8). The movable platform plate (11) is located behind the fixed platform plate (7). Movable seats (3) are provided on both sides of the fixed platform plate (7), and a movable crossbeam (14) is installed between the two movable seats (3). Multiple push blocks (15) are installed at the rear of the movable crossbeam (14). The bottom surface of each push block (15) is flush with the top surface of the fixed platform plate (7). A translation drive assembly for driving the movable seats (3) to move back and forth is also installed at the bottom of the fixed platform plate (7). A swing drive assembly for driving the movable platform plate (11) to swing up and down is installed at the stern of the ship. A receiving box (12) is installed at the stern of the ship, below the movable platform plate (11). A spraying window is provided at the bottom of the rear wall of the receiving box (12). A spraying wheel (13) is installed inside the receiving box (12).

2. The automatic debris-clearing platform device for trailing suction hopper vessels as described in claim 1, characterized in that: There are three push blocks (15) on the left, middle and right. The back is fixedly connected to the moving crossbeam (14) by bolts. Each push block (15) has a wedge-shaped plane at the front. The width of the outer side of the two push blocks (15) on both sides is greater than the width of the inner side.

3. The automatic debris-clearing platform device for trailing suction hopper vessels as described in claim 2, characterized in that: The translation drive assembly includes a lead screw (5) mounted and fixed below the fixed platform plate (7) and a drive motor (1) that drives the lead screw (5). A connecting plate (19) is mounted and fixed between the bottoms of the two moving seats (3). A moving block (18) located on the lead screw (5) is fixedly connected to the middle of the connecting plate (19).

4. The automatic debris-clearing platform device for a trailing suction hopper dredger as described in claim 3, characterized in that: in The fixed platform plate (7) is equipped with slide rails (6) on both sides. A support platform (20) is provided in the lower middle part of the inner side of the movable seat (3). A slider (21) is installed on the support platform (20). The slider (21) slides along the slide rail (6) on this side.

5. The automatic debris-clearing platform device for trailing suction hopper dredgers as described in claim 4, characterized in that: in Both the fixed platform plate (7) and the movable platform plate (11) are equipped with side guards (4) on both sides, and a strip space is provided inside the movable seat (3) for the side guards (4) to pass through.

6. The automatic debris-clearing platform device for a trailing suction hopper dredger as described in claim 5, characterized in that: in The fixed platform plate (7) is provided with a drain hole (16); a vibration motor (10) is installed at the bottom of the movable platform plate (11).

7. The automatic debris-clearing platform device for trailing suction hopper vessels as described in claim 6, characterized in that: The swing drive assembly is a swing hydraulic cylinder (9), and a connecting base (17) is provided at the stern of the ship and the bottom of the movable platform plate (11). The rear end of the cylinder body of the swing hydraulic cylinder (9) is hinged to the connecting base (17) at the stern of the ship, and the front end of the piston rod of the swing hydraulic cylinder (9) is hinged to the connecting base (17) at the bottom of the movable platform plate (11).

8. The automatic debris-clearing platform device for trailing suction hopper dredgers as described in claim 7, characterized in that: The spraying wheel (13) includes two opposing bearings (13-5), a rotating shaft (13-1) is installed between the two bearings (13-5), and three support plates (13-3) are installed on the rotating shaft (13-1). Multiple first spraying scrapers (13-2) with equal circumferential angles are installed between the two support plates (13-3) on the left side, and multiple second spraying scrapers (13-4) with equal circumferential angles are installed between the two support plates (13-3) on the right side. The first spraying scrapers (13-2) and the second spraying scrapers (13-4) are arranged in a V-shape.

9. The automatic debris-clearing platform device for a trailing suction hopper dredger as described in claim 8, characterized in that: in The fixed platform plate (7) has support blocks (2) at the four corners of its bottom, and the bottom of each support block (2) is fixedly connected to the ship deck.

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