Sand laying head device of trailing suction dredger

Abstract

The invention discloses a sand laying head device of a trailing suction dredger, and belongs to the technical field of trailing suction dredgers. A sand paving head device of a trailing suction dredger comprises a mud rake shell, a mud lifting assembly is arranged in the mud rake shell, a mud conveying channel communicated with a connecting pipe is arranged in the mud rake shell, an arc-shaped grating is arranged at the position, at the front end of the mud conveying channel, of the mud rake shell, and an anti-blocking mechanism is arranged on the arc-shaped grating. A treatment tank used for containing stones is fixedly arranged in the mud rake shell, a crushing mechanism is arranged on the upper side of the treatment tank, a filter plate connected with the mud conveying channel is arranged at the bottom of the treatment tank, a working shell is fixedly arranged on the outer side of the mud rake shell, and a driving part used for driving the mud lifting assembly, the anti-blocking mechanism and the crushing mechanism to work is arranged in the working shell; in the silt dredging process, intercepted stones can be effectively crushed, and the situation that the silt suction speed is low due to the fact that the stones block the grating is avoided, so that the work of the dredger is improved.

Description

Technical Field

[0001] This invention relates to the field of trailing suction hopper dredger technology, and more particularly to a sand-laying head device for a trailing suction hopper dredger. Background Technology

[0002] A sludge suction dredger is a device used in dredging vessels. This device includes a sludge suction dredger housing with a suction pipe fixed to its side. Inside the sludge suction dredger housing is a motor, the output of which is connected to a rotating rod. A bevel gear is fixed to the side of the rotating rod. The motor's output causes a rotating column to rotate, which in turn causes the sludge-shoveling blades to rotate, thus crushing and loosening the silt, facilitating the suction pipe's absorption of the silt and improving work efficiency.

[0003] Currently, in existing technologies, the sand-laying head device of a trailing suction hopper dredger directly loosens the silt in waterways and rivers. However, some waterways contain silt containing stones. The sand-laying head device uses grates or other intercepting nets to intercept these stones, preventing large stones from entering and damaging the equipment, thus ensuring smooth dredging operations. However, over prolonged use, a large number of stones are trapped at the grates, slowing down the silt intake speed and consequently affecting the dredger's working efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a sand-laying head device for a trailing suction hopper dredger.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sand-laying device for a trailing suction dredger includes a rake shell, a connecting pipe fixed to one side of the rake shell, a mud-lifting assembly inside the rake shell, a mud-transporting channel connected to the connecting pipe inside the rake shell, an arc-shaped grid at the front end of the mud-transporting channel on the rake shell, an anti-clogging mechanism on the arc-shaped grid, a processing trough for placing stones fixed inside the rake shell, a crushing mechanism on the upper side of the processing trough, a filter plate connected to the mud-transporting channel at the bottom of the processing trough, a working shell fixed to the outside of the rake shell, and a drive unit inside the working shell for driving the mud-lifting assembly, the anti-clogging mechanism, and the crushing mechanism.

[0006] Preferably, the arc-shaped grid includes a plurality of arc-shaped rods fixed at the front end of the sludge conveying channel and a plurality of crossbars for connecting the plurality of arc-shaped rods, wherein the plurality of crossbars and arc-shaped rods are arranged alternately, and the top of the arc-shaped rods is connected to the treatment trough.

[0007] Preferably, the anti-clogging mechanism includes multiple movable blocks slidably connected to the arc-shaped grid, the movable blocks being slidably connected to the arc-shaped rod, a connecting rod connecting two adjacent movable blocks in the horizontal direction, a first breaking rod being fixed on the connecting rod, and a connecting plate connecting two adjacent movable blocks in the vertical plane.

[0008] Preferably, the crushing mechanism includes a baffle that is slidably connected to the inner wall of the mud rake housing, a support plate fixed on the baffle, and a second crushing rod disposed on the lower side of the support plate. The baffle is rotatably connected to the connecting plate via a pin.

[0009] Preferably, the drive unit includes a hydraulic cylinder fixed inside the mud rake housing, the piston rod of the hydraulic cylinder is connected to a movable block connected to a baffle, and the mud rake housing is provided with a movable groove for the movable block to slide.

[0010] Preferably, the mud-lifting assembly includes a rotating rod rotatably connected inside the mud rake housing, and a plurality of mud-shoveling blades are evenly arranged circumferentially on the rotating rod.

[0011] Preferably, a rotating disk is fixedly provided at the end of the rotating rod, a positioning rod is fixedly provided on the rotating disk, the mud rake housing is rotatably connected to a swing plate via a pin, the swing plate is provided with a recessed hole for the positioning rod to move, and a fixed rod that moves within the recessed hole is fixedly provided on the movable block.

[0012] Preferably, the rotating rod includes elastic telescopic rods rotatably connected to both sides of the mud rake housing and a rotating shaft disposed between the two elastic telescopic rods. A connecting plate is fixedly provided on the outer side of the rotating shaft, and an extrusion inclined surface is provided on the connecting plate. A top rod is fixedly provided on the inner side wall of the mud rake housing to movably abut against the extrusion inclined surface.

[0013] Preferably, the arc-shaped grille and the central axis of the rotating rod are on the same straight line.

[0014] Preferably, the end of the connecting pipe away from the mud rake shell is connected to a flange, and the connecting pipe is connected to a suction pipe through the flange.

[0015] Compared with the prior art, the present invention provides a sand-laying head device for a trailing suction hopper dredger, which has the following beneficial effects: 1. The sand-laying head device of this trailing suction hopper dredger can simultaneously move the rocks blocked at the arc-shaped grid by the mud-lifting component, so that the rocks can enter the treatment tank and be crushed by the crushing mechanism, thus avoiding the rocks from blocking the grid and causing the mud and sand to be sucked in slowly, thereby improving the working speed of the dredger.

[0016] 2. The sand-laying head device of this trailing suction hopper dredger, through the setting of the anti-clogging mechanism, can crush small stones stuck in each diameter of the arc-shaped grid, further process the stones at the arc-shaped grid, ensure the passage rate of silt at the arc-shaped grid, and thus improve the work of the dredger.

[0017] 3. The sand-laying head device of this trailing suction hopper dredger can move back and forth left and right while the mud-lifting component is activating the silt, thereby increasing the activating area of ​​the mud-lifting component on the silt, avoiding dead spots in mud lifting, and ensuring the dredging effect of the dredger. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 A partially enlarged structural diagram of section A in the middle; Figure 5 This is a schematic diagram of the arc-shaped grille of the present invention; Figure 6 This is a schematic diagram of the drive unit of the present invention; Figure 7 This is a schematic diagram of the external structure of the rotating rod of the present invention.

[0019] In the diagram: 1. Mud rake shell; 2. Connecting pipe; 201. Flange; 3. Mud conveying channel; 4. Arc-shaped grid; 401. Arc-shaped rod; 402. Crossbar; 5. Treatment tank; 501. Filter plate; 6. Working shell; 7. Rotating rod; 701. Elastic telescopic rod; 702. Rotating shaft; 703. Connecting disc; 704. Mud scraper; 8. Moving block; 801. Connecting rod; 802. First crushing rod; 803. Connecting plate; 8031. Guide rod; 9. Baffle; 901. Support plate; 902. Second crushing rod; 903. Track groove; 10. Hydraulic cylinder; 1001. Movable block; 1002. Fixed rod; 11. Movable groove; 12. Rotating disc; 121. Positioning rod; 13. Swing plate; 131. Concave hole; 14. Top rod. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly 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 invention based on the specific circumstances.

[0023] Example: Refer to Figure 1 , Figure 2 and Figure 3 A sand-laying device for a trailing suction dredger includes a rake shell 1, a connecting pipe 2 fixedly installed on one side of the rake shell 1, a mud-lifting component installed inside the rake shell 1, a mud-transporting channel 3 connected to the connecting pipe 2 inside the rake shell 1, an arc-shaped grid 4 installed at the front end of the rake shell 1 at the mud-transporting channel 3, an anti-clogging mechanism installed on the arc-shaped grid 4, a processing trough 5 for placing stones fixedly installed inside the rake shell 1, a crushing mechanism installed on the upper side of the processing trough 5, a filter plate 501 connected to the mud-transporting channel 3 installed at the bottom of the processing trough 5, and a working shell 6 fixedly installed on the outer side of the rake shell 1, a drive unit for driving the mud-lifting component, the anti-clogging mechanism and the crushing mechanism inside the working shell 6.

[0024] Furthermore, a flange 201 is connected to the end of the connecting pipe 2 away from the mud rake housing 1, and a suction pipe is connected to the connecting pipe 2 through the flange 201.

[0025] Specifically, when the mud rake shell 1 is pumping silt from the bottom of the river, the drive unit works and drives the mud-lifting assembly to start the silt from the bottom of the river. The silt is suctioned through the arc-shaped grid 4, and the stones trapped in the silt are intercepted by the arc-shaped grid 4. The silt passes through the mud conveying channel 3 and the connecting pipe 2 in sequence, and is finally pumped out by the suction pipe. When the drive unit works, it also drives the anti-blocking mechanism to act. The anti-blocking mechanism breaks up the small stones stuck in the holes of the arc-shaped grid 4. When the mud-lifting assembly acts, it moves the stones intercepted at the arc-shaped grid 4 to the treatment tank 5. The crushing mechanism crushes the stones in the treatment tank 5, thereby avoiding the stones from blocking the grid and causing the silt suction speed to be slow, thus improving the work of the dredger.

[0026] Reference Figure 3 and Figure 5 As a preferred technical solution of the present invention, the arc-shaped grid 4 includes a plurality of arc-shaped rods 401 fixed at the front end of the mud conveying channel 3 and a plurality of crossbars 402 for connecting the plurality of arc-shaped rods 401. The plurality of crossbars 402 and the arc-shaped rods 401 are arranged alternately, and the top of the arc-shaped rods 401 is connected to the treatment tank 5.

[0027] Furthermore, the anti-clogging mechanism includes multiple movable blocks 8 slidably connected to the arc-shaped grid 4. The movable blocks 8 are slidably connected to the arc-shaped rod 401. A connecting rod 801 is connected between two adjacent movable blocks 8 in the horizontal direction. A first breaking rod 802 is fixed on the connecting rod 801. A connecting plate 803 is connected between two adjacent movable blocks 8 in the vertical plane.

[0028] Specifically, the arc-shaped rod 401 and the crossbar 402 are staggered to form an opening for silt to pass through. When the anti-clogging mechanism is working, the connecting plate 803 drives the moving block 8 to slide up and down along the arc-shaped rod 401. When the moving block 8 slides up and down, it drives the first crushing rod 802 to move through the connecting rod 801, so that the first crushing rod 802 can crush the small stones stuck on the arc-shaped grid 4, so as to prevent the stones from blocking the grid and causing the silt to be sucked in slowly, thus improving the work of the dredger.

[0029] Reference Figure 3 , Figure 4 and Figure 5 As a preferred technical solution of the present invention, the crushing mechanism includes a baffle 9 slidably connected to the inner wall of the mud rake housing 1, a support plate 901 fixed on the baffle 9, and a second crushing rod 902 disposed on the lower side of the support plate 901. The baffle 9 is provided with a track groove 903, and a guide rod 8031 ​​slidably in the track groove 903 is fixed on the connecting plate 803.

[0030] Specifically, when the crushing mechanism is working, the baffle 9 slides on the inner wall of the mud rake housing 1. When the baffle 9 moves up and down, it drives the second crushing rod 902 to crush the stones placed in the processing tank 5 through the support plate 901. When the baffle 9 moves up and down, it applies a force to the guide rod 8031 ​​through the track groove 903, which in turn causes the guide rod 8031 ​​to drive the connecting plate 803 to slide up and down along the arc rod 401, so that the anti-blocking mechanism works automatically.

[0031] Reference Figure 3 and Figure 6 As a preferred technical solution of the present invention, the driving unit includes a hydraulic cylinder 10 fixed in the mud rake housing 1. The piston rod of the hydraulic cylinder 10 is connected to a movable block 1001 connected to the baffle 9. The mud rake housing 1 is provided with a movable groove 11 for sliding of the movable block 1001.

[0032] Specifically, when the drive unit is working, the piston rod of the hydraulic cylinder 10 is controlled to move up and down reciprocally. The piston rod drives the movable block 1001 to move back and forth in the movable groove 11. When the movable block 1001 moves, it drives the baffle 9 to slide back and forth on the inner wall of the mud rake housing 1, so that the crushing mechanism and the anti-blocking mechanism work.

[0033] Reference Figure 3 and Figure 6 As a preferred technical solution of the present invention, the mud-lifting assembly includes a rotating rod 7 rotatably connected inside the mud rake housing 1, and a plurality of mud-shoveling blades 704 are evenly arranged on the rotating rod 7 in a circular pattern.

[0034] Furthermore, a rotating disk 12 is fixedly provided at the end of the rotating rod 7, and a positioning rod 121 is fixedly provided on the rotating disk 12. The mud rake housing 1 is rotatably connected to a swing plate 13 via a pin. A recessed hole 131 for the positioning rod 121 to move is provided on the swing plate 13. A fixed rod 1002 that moves within the recessed hole 131 is fixedly provided on the movable block 1001.

[0035] Furthermore, the central axis of the arc-shaped grille 4 and the rotating rod 7 are aligned with each other.

[0036] Specifically, when the movable block 1001 moves up and down, it moves within the recess 131 via the fixed rod 1002, thereby causing the swing plate 13 to rotate around the pin at the connection point with the mud rake housing 1. When the swing plate 13 swings back and forth, it drives the rotating disk 12 to rotate via the positioning rod 121. When the rotating disk 12 rotates, it drives the rotating rod 7 and the mud shovel 704 on the outside of the rotating rod 7 to rotate. The mud shovel 704 shovels the silt at the bottom of the river and moves along the outer wall of the arc-shaped grid 4, so that the mud shovel 704 pushes the stones intercepted on the outside of the arc-shaped grid 4 into the treatment tank 5.

[0037] Reference Figure 6 and Figure 7As a preferred technical solution of the present invention, the rotating rod 7 includes an elastic telescopic rod 701 rotatably connected to both sides of the mud rake housing 1 and a rotating shaft 702 disposed between the two elastic telescopic rods 701. A connecting plate 703 is fixedly provided on the outer side of the rotating shaft 702. An extrusion inclined surface is provided on the connecting plate 703. A top rod 14 is fixedly provided on the inner side wall of the mud rake housing 1 and moves against the extrusion inclined surface.

[0038] Specifically, when the rotating rod 7 rotates, the pressing slope on the outer side of the connecting plate 703 abuts against the top rod 14, so that during the period when the top rod 14 abuts against the pressing slope of the rotating connecting plate 703, the elastic telescopic rod 701 automatically stretches or contracts, thereby changing the working range of the mud-shoveling blade 704 on the outer side of the rotating rod 7, increasing the starting area of ​​the mud-lifting assembly on the silt, avoiding dead angles in mud lifting, and ensuring the dredging effect of the dredger.

[0039] Working principle: When the mud rake housing 1 pumps the silt from the bottom of the river, the piston rod of the hydraulic cylinder 10 moves up and down reciprocally. The piston rod drives the movable block 1001 to move back and forth in the movable groove 11. When the movable block 1001 moves up and down reciprocally, it moves in the concave hole 131 through the fixed rod 1002, thereby causing the swing plate 13 to rotate around the pin at the connection with the mud rake housing 1. When the swing plate 13 swings back and forth, it drives the rotating disk 12 to rotate through the positioning rod 121. When the rotating disk 12 rotates, it drives the rotating rod 7 and the mud shovel 704 on the outside of the rotating rod 7 to rotate. The mud shovel 704 shovels the silt at the bottom of the river, and the mud shovel 704 moves along the outer wall of the arc-shaped grid 4, so that the mud shovel 704 pushes the stones intercepted on the outside of the arc-shaped grid 4 into the treatment tank 5. When the movable block 1001 moves, it drives the baffle 9 to slide back and forth on the inner wall of the mud rake housing 1. When the baffle 9 slides on the inner wall of the mud rake housing 1, it drives the second crushing rod 902 to crush the stones placed in the processing tank 5 through the support plate 901. The crushed stones fall into the mud conveying channel 3 through the filter plate 501 and are sucked in. The baffle 9 slides on the inner wall of the mud rake housing 1. When the baffle 9 moves up and down, the connecting plate 803 drives the moving block 8 to slide up and down along the arc rod 401. When the moving block 8 slides up and down, it drives the first crushing rod 802 to move through the connecting rod 801, so that the first crushing rod 802 crushes the small stones stuck on the arc grid 4, avoiding the stones from blocking the grid and causing the mud and sand to be sucked in slowly, thus improving the work of the dredger.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sand-laying device for a trailing suction dredger, comprising a rake housing (1), wherein a connecting pipe (2) is fixedly provided on one side of the rake housing (1), characterized in that, The mud rake housing (1) is provided with a mud lifting component. The mud rake housing (1) is provided with a mud conveying channel (3) connected to the connecting pipe (2). The mud rake housing (1) is provided with an arc-shaped grid (4) at the front end of the mud conveying channel (3). The arc-shaped grid (4) is provided with an anti-clogging mechanism. The mud rake housing (1) is fixedly provided with a processing trough (5) for placing stones. The upper side of the processing trough (5) is provided with a crushing mechanism. The bottom of the processing trough (5) is provided with a filter plate (501) connected to the mud conveying channel (3). The outside of the mud rake housing (1) is fixedly provided with a working shell (6). The working shell (6) is provided with a drive unit for driving the mud lifting component, the anti-clogging mechanism and the crushing mechanism.

2. The sand-laying device for a trailing suction hopper dredger according to claim 1, characterized in that, The arc-shaped grid (4) includes a plurality of arc-shaped rods (401) fixed at the front end of the mud conveying channel (3) and a plurality of crossbars (402) for connecting the plurality of arc-shaped rods (401). The plurality of crossbars (402) are staggered with the arc-shaped rods (401), and the top of the arc-shaped rods (401) is connected to the treatment tank (5).

3. The sand-laying device for a trailing suction hopper dredger according to claim 2, characterized in that, The anti-clogging mechanism includes multiple movable blocks (8) slidably connected to the arc-shaped grid (4). The movable blocks (8) are slidably connected to the arc-shaped rod (401). A connecting rod (801) is connected between two adjacent movable blocks (8) in the horizontal direction. A first breaking rod (802) is fixed on the connecting rod (801). A connecting plate (803) is connected between two adjacent movable blocks (8) in the vertical plane.

4. The sand-laying device for a trailing suction hopper dredger according to claim 3, characterized in that, The crushing mechanism includes a baffle (9) slidably connected to the inner wall of the mud rake housing (1), a support plate (901) fixed on the baffle (9), and a second crushing rod (902) set on the lower side of the support plate (901). The baffle (9) is provided with a track groove (903), and the connecting plate (803) is fixed with a guide rod (8031) that slides in the track groove (903).

5. The sand-laying device for a trailing suction hopper dredger according to claim 4, characterized in that, The drive unit includes a hydraulic cylinder (10) fixed inside the mud rake housing (1). The piston rod of the hydraulic cylinder (10) is connected to a movable block (1001) connected to a baffle (9). The mud rake housing (1) has a movable groove (11) for sliding of the movable block (1001).

6. The sand-laying device for a trailing suction hopper dredger according to claim 5, characterized in that, The mud-lifting assembly includes a rotating rod (7) rotatably connected inside the mud rake housing (1), and a plurality of mud-shoveling blades (704) are evenly arranged on the rotating rod (7) in a circular pattern.

7. The sand-laying device for a trailing suction hopper dredger according to claim 6, characterized in that, The end of the rotating rod (7) is fixed with a rotating disk (12), and a positioning rod (121) is fixed on the rotating disk (12). The mud rake housing (1) is rotatably connected to a swing plate (13) by a pin. The swing plate (13) is provided with a recessed hole (131) for the positioning rod (121) to move. The movable block (1001) is fixed with a fixed rod (1002) that moves in the recessed hole (131).

8. The sand-laying device for a trailing suction hopper dredger according to claim 7, characterized in that, The rotating rod (7) includes an elastic telescopic rod (701) rotatably connected to both sides of the mud rake housing (1) and a rotating shaft (702) disposed between the two elastic telescopic rods (701). A connecting plate (703) is fixedly provided on the outside of the rotating shaft (702). An extrusion slope is provided on the connecting plate (703). A top rod (14) is fixedly provided on the inner wall of the mud rake housing (1) and moves against the extrusion slope.

9. The sand-laying device for a trailing suction hopper dredger according to claim 8, characterized in that, The central axis of the arc-shaped grille (4) and the rotating rod (7) are on the same straight line.

10. The sand-laying device for a trailing suction hopper dredger according to claim 1, characterized in that, The end of the connecting pipe (2) away from the mud rake shell (1) is connected to a flange (201), and the connecting pipe (2) is connected to a suction pipe through the flange (201).

Images