A device for the vibratory liquefaction harvesting of shellfish and method of use thereof

Abstract

The application discloses a kind of shell knock liquidization recovery device, including track driving car, be set in its front end and vibrate liquefaction subassembly, the vibration liquefaction subassembly includes fixed crossbeam, mounting plate, lifting plate and guide rod, guide rod bottom end connects and hits board, vibration motor is driven lifting plate reciprocating motion by crank connecting rod mechanism;Hit board uses integrated structure or split type design, split type structure integrates wedge-shaped hit net and multiple types of nozzle system;Rotary implementation mode is driven wedge-shaped hit board by hit roller to generate composite vibration wave, filter assembly recycles silt water and transports middle water to nozzle, medicine box adds electrolyte to adjust water body rheological property, the present application is by the synergistic effect of vibration impact and fluid cyclone, so that intertidal bottom material is quickly liquefied to form fluidized layer, realize shell efficient low-loss recovery, reach sustainable recovery effect of significantly reducing operation energy consumption, reduce bottom material ecological disturbance.

Description

Technical Field

[0001] This invention belongs to the technical field of shellfish harvesting equipment, and particularly relates to a shellfish vibration liquefaction harvesting device and its usage method. Background Technology

[0002] Shellfish farming is one of the leading industries in China's fisheries sector, making a significant contribution to the development of China's fisheries economy. Tidal flats are the main farming areas for shellfish, and harvesting is an important part of the shellfish farming process. Currently, the main harvesting methods are manual and mechanical harvesting. The inventor's previously filed Chinese utility model patent CN221329915U discloses a combine harvester for harvesting four-cornered clams in tidal flats. See attached image for details. Figure 16 The equipment includes a harvesting mechanism for harvesting four-cornered clams and a tracked traveling mechanism. The harvesting mechanism is located at the front end of the tracked traveling mechanism. The tracked traveling mechanism includes a frame and a bar screen located at the front end of the frame. A vibration mechanism is located at the lower end of the bar screen. A spraying device facing the bar screen is provided on the frame for cleaning the harvested four-cornered clams. A first chain-type conveyor chain is provided on the frame at the rear end of the bar screen. The first chain-type conveyor chain is arranged along the length of the frame and a second chain-type conveyor chain is provided at its conveying end. The second chain-type conveyor chain is inclined from bottom to top. A drum-type screening mechanism is provided below the high end outlet of the second chain-type conveyor chain. However, in the actual harvesting process, there is a lot of resistance between the harvesting equipment and the low-quality mudflats, which increases fuel consumption and damages the mudflats, which is not conducive to the sustainable development of shellfish farming. Summary of the Invention

[0003] The purpose of this invention is to provide a shellfish liquefaction harvesting device and its usage method, aiming to solve the problems mentioned above.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, this application provides a shellfish vibration liquefaction harvesting device, including a harvester located at the front end of a tracked driver vehicle, and a vibration liquefaction assembly located at the front end of the harvester. The vibration liquefaction assembly includes a fixed crossbeam, a mounting plate, and a lifting plate arranged from top to bottom. A set of L-shaped rotating shaft brackets is mounted on the top of the mounting plate, and a drive shaft is provided between the rotating shaft brackets. The device also includes a guide rod that passes through the mounting plate and the lifting plate, is fixedly connected to the lifting plate, and slides with the mounting plate, and has a striking plate at its bottom end. A motor mounting frame is screwed to one side of the fixed crossbeam, and a vibration motor is provided on its two inner sides. The vibration motor drives the drive shaft through a chain or belt. Crank connecting rods are mounted at both ends of the drive shaft, and its lower end passes through the mounting plate and connects to the lifting plate. A connecting support arm connected to the fixed crossbeam is provided on the mounting plate, and the fixed crossbeam is fixedly connected to the harvester.

[0005] In one possible implementation, the striking plate includes a striking plate body, a set of protective strips along the length direction near the guide rod end of the striking plate body, and a reinforcing strip at the opposite end of the protective strips; it also includes multiple permeable strips that penetrate the top and bottom of the striking plate body and are arranged along the length direction, and multiple secondary permeable holes penetrating the top and bottom ends of each of the two ends of the striking plate body along the length direction are provided.

[0006] In one possible implementation, the striking plate includes a lower striking plate, a set of guard strips along its length near the guide rod end of the lower striking plate, a reinforcing strip at the opposite end of the guard strips, the top of the reinforcing strip being fixed to the guide rod, a rectangular hole penetrating vertically in the middle of the lower striking plate, a wedge-shaped mesh striking net on the inner wall of the lower striking plate, the holes of the striking net being rhomboid in shape, the diameter of the holes of the striking net gradually decreasing from the lower to the higher, a screen mesh cooperating with the striking net being provided between the opposite surfaces of the guard strips near the guide rod, and secondary permeable holes at both ends of the striking plate.

[0007] In one possible implementation, the tracked vehicle includes a conveying assembly, a filtering assembly, and a medicine tank mounted on the chassis. The filtering assembly collects and filters the mud and water generated by the conveying assembly and the harvester, and then pumps the filtered water to the vibrating liquefaction assembly.

[0008] In one possible implementation, the top of the lifting plate is provided with a multi-way valve that is connected to the filter assembly through a feeding pipe. A rotary joint is sleeved on the outer side of the guide rod below the lifting plate. The rotary joint is connected to the feeding pipe. The part of the guide rod below the lifting plate is hollow.

[0009] In one possible implementation, a vertical nozzle communicating with a guide rod is provided at the corner of the bottom end of the lower striking plate. Multiple inclined nozzles are arranged at intervals between two vertical nozzles along the length direction. The angle between the inclined nozzles and the horizontal plane is 30-60 degrees. Multiple equally spaced spiral nozzles are provided at the bottom end of the striking net. The spiral nozzles are provided with guide grooves. The guide grooves adopt a 30-60 degree spiral pattern. Preferably, the guide grooves adopt a 45 degree spiral pattern.

[0010] In one possible implementation, the vibration liquefaction assembly includes a set of impact roller support plates disposed at the bottom end of a fixed crossbeam, and an impact shaft passing through the impact roller support plates. An impact roller is sleeved on the outside of the impact shaft, and multiple impact plates are disposed on the outer side of the impact roller. A rotary joint is disposed at one end of the impact shaft.

[0011] In one possible implementation, the striking plate is wedge-shaped, with its length pointing towards the center line of the striking roller, and is connected to the striking roller via a dovetail tenon, with its leading edge angle being... degrees, trailing edge angle is The striking plate has a mesh-like perforated end face and adopts a multi-set symmetrical spiral layout.

[0012] In one possible implementation, the rear end of the striking plate is thinner than the front end, and a vibrating ring is provided at the end away from the striking roller, including a base ring and a plurality of swaying rings nested in layers, with the upper swaying ring nested inside the lower swaying ring.

[0013] In addition, the present invention also relates to a method of using a shellfish vibration liquefaction harvesting device, comprising the following steps; Step 1: Move the tracked vehicle to the mudflat area and start the vibration motor to drive the drive shaft; Step 2: The drive shaft drives the crank connecting rod to move, and the crank connecting rod drives the lifting plate to move up and down along the guide rod, so that the striking plate body periodically strikes the mudflat, causing the mudflat soil to liquefy. Step 3: The tracked vehicle moves forward and uses the harvester to harvest the liquefied mudflats. In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In this invention, 1. the vertical reciprocating motion trajectory of the striking plate is stabilized by the crank-connecting rod transmission and the sliding cooperation of the guide rod, so as to achieve uniform vibration liquefaction of the tidal flat bottom, thereby reducing disturbance, improving operational stability and saving energy; 2. By reinforcing the structure with permeable strips and protective strips on the impact plate, the water flow forms a three-dimensional scouring network and enhances the impact resistance of the plate, thereby reducing movement resistance and sediment accumulation, promoting the uniform floating of shellfish and extending the life of the equipment. 3. By linking a multi-nozzle system with a gradient beating net, bottom sediment penetration, swirling flotation, and dynamic screening are completed simultaneously, achieving water recycling and efficient separation, thereby improving harvesting efficiency, purity, and water conservation. 4. By combining the spiral layout of the impact rollers with the high-frequency oscillation of the vibrating ring, continuous superimposed impact and automatic sludge removal are combined to enhance the bottom liquefaction effect and the self-cleaning of the plate, thereby maintaining stable operating efficiency over a long period of time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an isometric view of the vibration liquefaction component of the present invention; Figure 3 This is an isometric view of a striking plate according to one embodiment of the present invention; Figure 4 This is a left view of the striking plate according to another embodiment of the present invention; Figure 5 This is an isometric view of the striking plate according to another embodiment of the present invention; Figure 6 For the present invention Figure 5 A magnified view of part A; Figure 7 This is a schematic diagram of the diamond-shaped holes in the striking net of the present invention; Figure 8 This is an isometric view of a vibration liquefaction component according to another embodiment of the present invention; Figure 9 This is a rear view of a vibratory liquefaction assembly according to another embodiment of the present invention. Figure 10 This is a schematic diagram of nozzle installation according to another embodiment of the present invention; Figure 11 For the present invention Figure 10 A magnified view of part B; Figure 12 This is an isometric view of a vibration liquefaction component according to another embodiment of the present invention; Figure 13 This is an isometric view of the striking plate according to another embodiment of the present invention; Figure 14 This is an isometric view of a vibration ring according to another embodiment of the present invention; Figure 15 For the present invention Figure 14 A schematic diagram of AA.

[0015] Figure 16 This is a physical image of a combine harvester as described in the background art of this invention.

[0016] Figure 17 These are field verification photos of the preliminary design of the vibration liquefaction recovery device in this invention (initially using a single vibration plate).

[0017] Figure 18 The above are field photos of the preliminary design of the vibration liquefaction recovery device in this invention (initially using a single vibration plate).

[0018] Markings in the diagram: 1. Harvester; 101. Fixed crossbeam; 2. Tracked driver vehicle; 3. Filter assembly; 4. Medicine tank; 5. Vibrating liquefaction assembly; 6. Feed pipe; 501. Mounting plate; 502. Connecting support arm; 503. Motor mounting frame; 504. Vibrating motor; 505. Lifting plate; 506. Impact plate; 5061a. Impact plate body; 5062a. Permeable strip; 5063a. Protective strip; 5064a. Reinforcing strip; 5065a. Secondary permeable hole; 5061b. Lower impact plate; 5062 b. Striking net; 5063b. Protective strip; 5064b. Reinforcing strip; 5065b. Secondary permeable hole; 5066b. Screen; 507. Guide rod; 508. Crank connecting rod; 509. Shaft support; 510. Multi-way valve; 511. Rotary joint; 512. Vertical nozzle; 513. Inclined nozzle; 514. Spiral nozzle; 515. Striking roller support plate; 516. Striking roller; 517. Striking shaft; 518. Mesh perforation; 519. Vibration ring; 5191. Shaking ring; 5192. Base ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0020] Please see the appendix Figure 1 The illustrated shellfish vibration liquefaction harvesting device includes a harvester 1 located at the front end of a tracked driver vehicle 2, and a vibration liquefaction component 5 located at the front end of the harvester 1. Please refer to the attached document. Figure 2 The vibratory liquefaction assembly 5 includes a fixed crossbeam 101, a mounting plate 501, and a lifting plate 505 arranged from top to bottom. The top of the mounting plate 501 is equipped with a set of L-shaped rotating shaft brackets 509, and a drive shaft is provided between the rotating shaft brackets 509. It also includes a guide rod 507 that passes through the mounting plate 501 and the lifting plate 505, which is fixedly connected to the lifting plate 505 and slidably engaged with the mounting plate 501, and has a striking plate 506 at its bottom end. It also includes a motor mounting frame 503, which is screwed to one side of the fixed crossbeam 101. Vibration motors 504 are provided on both sides of the frame, and the vibration motors 504 drive the drive shaft through a chain or belt. Crank connecting rods 508 are installed at both ends of the drive shaft, and their lower ends pass through the mounting plate 501 and connect to the lifting plate 505.

[0021] The mounting plate 501 is provided with a connecting support arm 502 that is connected to the fixed crossbeam 101. The fixed crossbeam 101 is fixedly connected to the collector. In addition, the connecting support arm 502 is provided at the top or side of the mounting plate 501. In this embodiment, the connecting support arm 502 is provided at the top of the mounting plate 501.

[0022] In this embodiment, the vibrating liquefaction component 5 is located at the front end of the collector 1 and includes a fixed crossbeam 101, a mounting plate 501, and a lifting plate 505 connected sequentially from top to bottom. The fixed crossbeam 101 is rigidly connected to the frame of the collector 1 by bolts. A pair of L-shaped rotating shaft brackets 509 are welded to the top of the mounting plate 501. A drive shaft is installed between the two rotating shaft brackets 509 through a bearing. The guide rod 507 passes through the guide hole of the mounting plate 501 and the fixing hole of the lifting plate 505. The guide rod 507 is fixedly connected to the lifting plate 505. The guide rod 507 and the guide hole of the mounting plate 501 are clearance-fitted to achieve sliding. The bottom end of the guide rod 507 is connected to the striking plate 506 through a flange.

[0023] The motor mounting frame 503 is a gate-shaped structure, screwed to the side of the fixed crossbeam 101. The vibration motor 504 is installed between the two sides of its inner wall. The vibration motor 504 drives the sprocket at the end of the transmission shaft via a chain or is connected to the transmission shaft via a belt. The upper ends of the crank connecting rod 508 are fixed at both ends of the transmission shaft. The lower end of the crank connecting rod 508 passes through the clearance hole of the mounting plate 501 and is hinged to the lugs on both sides of the lifting plate 505 via a spherical bearing.

[0024] The connecting support arm 502 is vertically fixed to the top of the mounting plate 501, and its top is locked to the bottom surface of the crossbeam 101 by bolts. This triangular support structure can distribute the lateral load during operation.

[0025] During operation, the vibratory motor 504 operates, driving the transmission shaft to rotate via chain or belt transmission. The crank connecting rod 508 converts the rotational motion into the vertical reciprocating motion of the lifting plate 505. The guide rod 507 slides within the guide hole of the mounting plate 501, constraining the movement trajectory of the lifting plate 505. The striking plate 506 strikes the mudflat surface at a set frequency, generating vibration waves that increase the pore water pressure of the mud and sand, forming a fluid dynamic liquefaction layer. Shellfish detach from the bottom sediment in the liquefaction layer and float to the surface, where they are then collected by the scraper of the harvester 1. This implementation method achieves mudflat liquefaction through high-frequency striking, significantly reducing harvesting resistance. The top mounting method of the connecting support arm 502 suppresses lateral torque, and the sliding fit of the guide rod 507 ensures the vertical stability of the striking trajectory, avoiding excessive disturbance to the bottom sediment.

[0026] In some implementations, please refer to the appendix. Figure 3 As shown, the striking plate 506 includes a striking plate body 5061a, a set of protective strips 5063a along the length direction near the end of the striking plate body 5061a close to the guide rod 507, and a reinforcing strip 5064a at the opposite end of the protective strips 5063a; it also includes a plurality of permeable strips 5062a that penetrate the top and bottom of the striking plate body 5061a and are arranged along the length direction, and a plurality of secondary permeable holes 5065a that penetrate the top and bottom of the striking plate body 5061a are provided at both ends of the length direction of the striking plate body 5061a. In this application, "a plurality of" means at least two.

[0027] In this embodiment, the striking plate 506 includes a striking plate body 5061a. On the long side of the striking plate body 5061a near the guide rod 507, two parallel protective strips 5063a are welded along the length direction. The protective strips 5063a are made of angle steel and are used to enhance the bending strength of the plate and protect the guide rod connection area. Reinforcing strips 5064a are welded to the opposite ends of the protective strips 5063a. The reinforcing strips 5064a are made of square steel and are used to resist the torsional stress during the striking operation.

[0028] Multiple permeable strips 5062a are provided on the surface of the slapping plate body 5061a. The permeable strips 5062a are elongated through holes that penetrate the upper and lower surfaces of the plate body and are evenly distributed along the width direction of the plate body. The permeable strips 5062a allow water to pass through in both directions, reducing the water resistance effect during the slapping process. At least two secondary permeable holes 5065a are provided at both ends of the slapping plate body 5061a along the length direction. The secondary permeable holes 5065a are circular through holes that penetrate the upper and lower end faces of the plate body. The secondary permeable holes 5065a accelerate the lateral flow of water in the edge area of ​​the plate body and prevent local siltation.

[0029] During operation, when the impact plate 506 impacts the tidal flat surface, the protective strip 5063a protects the connection of the guide rod 507 from the impact of gravel, the reinforcing strip 5064a inhibits the deformation of the middle part of the plate, and the permeable strip 5062a allows water to penetrate the plate at high speed, forming a vertically downward jet impact layer, which promotes the instantaneous liquefaction of mud and sand. The secondary permeable holes 5065a generate lateral water flow at both ends of the plate, eliminating the corner eddy zone and preventing shellfish from being squeezed and buried laterally. The water flow passes through the three-dimensional scouring network formed by the permeable structure, causing the shellfish to quickly float and separate in the liquefaction layer.

[0030] This implementation optimizes the water flow distribution pattern and reduces the movement resistance of the slapping plate 506 through the synergistic effect of the permeable strip 5062a and the secondary permeable hole 5065a. At the same time, it avoids shear damage to the tidal flat bottom. The dual protection design of the protective strip 5063a and the reinforcing strip 5064a significantly improves the operational durability of the slapping plate 506 in gravel-bearing bottoms.

[0031] In some implementations, please refer to the appendix. Figure 4-7As shown, the striking plate 506 includes a lower striking plate 5061b. A set of protective strips 5063b is provided along the length direction of the lower striking plate 5061b near the end of the guide rod 507. A reinforcing strip 5064b is provided at the opposite end of the protective strips 5063b. The top of the reinforcing strip 5064b is fixed to the guide rod 507. A rectangular hole penetrating from top to bottom is provided in the middle of the lower striking plate 5061b. A wedge-shaped mesh striking net 5062b is provided on the inner wall of the lower striking plate 5061b. The holes of the striking net 5062b are rhomboid, and the diameter of the holes of the striking net 5062b gradually decreases from the bottom to the top. A screen 5066b that cooperates with the striking net 5062b is provided between the opposite surfaces of the protective strips 5063b near the guide rod 507. Secondary water-permeable holes 5065b are also provided at both ends of the striking plate 506.

[0032] In this embodiment, the striking plate 506 includes a lower striking plate 5061b, which is a rectangular frame structure. Two parallel guard strips 5063b are welded along the length of the lower striking plate 5061b near the long side of the guide rod 507. The guard strips 5063b are made of channel steel. A reinforcing strip 5064b is provided on the opposite side of the guard strips 5063b. The reinforcing strip 5064b is an I-beam, and its top end is rigidly connected to the flange of the guide rod 507. A rectangular hole penetrating from top to bottom is opened in the middle of the lower striking plate 5061b, and a striking mesh is embedded in its inner wall. 5062b, the slapping net 5062b has a wedge-shaped mesh structure with rhomboid mesh openings. The mesh opening diameter gradually decreases from the bottom near the mudflat to the top, forming a gradient filtration channel. In the area near the guide rod 507 between the two guard strips 5063b, a screen 5066b is fixed laterally. The screen 5066b is made of flexible material, and its mesh opening diameter is the same as that of the slapping net 5062b. At least two secondary permeable holes 5065b are opened at each end of the lower slapping plate 5061b along its length. The secondary permeable holes 5065b are circular through holes.

[0033] During operation, when the slapping plate 506 impacts the mudflats, the mud and sand mixture flows into the slapping net 5062b through rectangular holes. The gradient change in the mesh diameter of the slapping net 5062b achieves graded filtration: the large mesh at the bottom separates coarse mud and sand particles, while the small mesh at the top prevents shellfish from leaking out. The screen 5066b intercepts gravel splashed by the impact. When the slapping plate 506 is raised, the gap between the reinforcing strip 5064b and the guard strip 5063b forms an upward flow channel. The water flow carries the shellfish upward, while the fine sand is discharged through the small holes at the top of the slapping net 5062b, and the shellfish are trapped on the surface of the slapping net 5062b, achieving dynamic screening. The secondary permeable holes 5065b form a transverse overflow on the side of the plate, eliminating boundary eddies.

[0034] This implementation method utilizes the wedge-shaped gradient filtration of the striking net 5062b and the synergistic effect of the reinforcing strip 5064b to simultaneously complete shellfish screening during the liquefaction process. The arrangement of the reinforcing strip 5064b on the back side of the guard strip 5063b forms a directional upward flow channel, enabling the shellfish to actively separate during the lifting stage of the striking plate. The screen 5066b protects the guide rod 507 from gravel impact. This triple structure significantly improves the harvest purity and efficiency.

[0035] In some implementations, please refer to the appendix. Figure 1 As shown, the tracked driving vehicle 2 includes a conveying assembly, a filtering assembly 3 and a medicine tank 4 mounted on the chassis. The filtering assembly 3 collects and filters the mud and water generated by the conveying assembly and the collector 1, and then sends the filtered water to the vibrating liquefaction assembly 5 through a water pump.

[0036] In some implementations, please refer to the appendix. Figure 8 and Figure 9 As shown, the top of the lifting plate 505 is provided with a multi-way valve 510 that is connected to the filter assembly 3 through the material conveying pipe 6. A rotary joint 511 is sleeved on the outer side of the guide rod 507 below the lifting plate 505. The rotary joint 511 is connected to the material conveying pipe 6. The part of the guide rod 507 below the lifting plate 505 is hollow.

[0037] In some implementations, please refer to the appendix. Figure 10-11 As shown, a vertical nozzle 512 communicating with a guide rod 507 is provided at the corner of the bottom end of the lower striking plate 5061b. Multiple inclined nozzles 513 are arranged at intervals between two vertical nozzles 512 along the length direction. The angle between the inclined nozzles 513 and the horizontal plane is 30-60 degrees. Multiple equally spaced spiral nozzles 514 are provided at the bottom end of the striking net 5062b. The spiral nozzles 514 are provided with flow guide grooves. The flow guide grooves adopt a 30-60 degree spiral pattern. Preferably, the flow guide grooves adopt a 45 degree spiral pattern. The spiral nozzles 514 generate vortices. The swirling flow generates a Magnus effect, which increases the rotational and upward speed of the shellfish. In this embodiment, there are 4 vertical nozzles 512 arranged at the four vertices. The number of inclined nozzles 513 is preferably 10 or 12 and symmetrically distributed along the lower striking plate 5061b. The number of spiral nozzles 514 is 24, 28 or 32.

[0038] In this embodiment, a multi-way valve 510 is fixed at the top of the lifting plate 505. The multi-way valve 510 is connected to the water output end of the filter assembly 3 through the feed pipe 6. The section of the guide rod 507 below the lifting plate 505 is made into a hollow pipe. A rotary joint 511 is sleeved on its outer wall. The water inlet end of the rotary joint 511 is connected to the multi-way valve 510 through a hose, and the water outlet end is connected to the top of the guide rod 507 to realize the rotation dynamic seal water supply. The hollow guide rod 507 transports the water flow to the internal flow channel of the tapping plate 506.

[0039] Vertical nozzles 512 are installed at the four corners of the bottom of the lower striking plate 5061b, with their nozzles pointing vertically downwards and directly connected to the flow channel of the guide rod 507; along the length of the lower striking plate 5061b, 12 inclined nozzles 513 are symmetrically arranged between every two vertical nozzles 512, with the spray center line of the inclined nozzles 513 forming a 45-degree angle with the horizontal plane; 28 spiral nozzles 514 are evenly installed on the bottom edge of the striking net 5062b, with 45-degree spiral guide grooves opened in their inner cavities.

[0040] During operation, water from filter assembly 3 is pumped into multi-way valve 510 via feed pipe 6 and enters hollow guide rod 507 through rotary joint 511. The water flow is divided into three outputs: vertical nozzle 512 sprays a columnar water flow downwards to penetrate the mud and sand layer above the shellfish; tilting nozzle 513 sprays laterally at a 45-degree angle to remove silt from the edge of the plate; spiral nozzle 514 converts the water flow into a spiral jet; the spiral guide channel causes the water flow to generate a high-speed vortex, forming a low-pressure suction zone; the shellfish are driven by the Magnus effect in the vortex and accelerate upwards along the spiral trajectory; the gradient mesh of the beating net 5062b dynamically classifies the floating shellfish: large-sized shellfish are retained in the bottom large mesh area, and small-sized shellfish rise to the top small mesh area for enrichment; vertical nozzle 512 simultaneously eliminates the negative pressure resistance under the plate; secondary permeable holes 5065b discharge fine sand from the edges to prevent the mesh from clogging.

[0041] This implementation achieves integrated liquefaction and screening through the synergistic effect of three-stage nozzles; the vertical nozzle 512 breaks through the solidification layer, the inclined nozzle 513 maintains the fluidization state, and the vortex jet of the spiral nozzle 514 increases the shellfish rising efficiency by more than 30%. The gradient filtration of the slapping net 5062b forms a spatial linkage with the nozzle system, which greatly improves the harvesting purity and rate. At the same time, the water consumption of the operation is reduced through water circulation, which meets the requirements of ecological protection.

[0042] In some implementations, please refer to the appendix. Figure 12 The vibratory liquefaction assembly 5 includes a set of striking roller support plates 515 disposed at the bottom end of the fixed crossbeam 101, and a striking shaft 517 passing through the striking roller support plates 515. A striking roller 516 is sleeved on the outside of the striking shaft 517, and a plurality of striking plates 506 are disposed on the outer side of the striking roller 516. A rotary joint 511 is disposed at one end of the striking shaft 517.

[0043] In some implementations, please refer to the appendix. Figure 13 As shown, the striking plate 506 is wedge-shaped, with its length pointing towards the center line of the striking roller 516. It is connected to the striking roller 516 via a dovetail tenon, and its leading edge angle is... degrees (design range 10-15 degrees), trailing edge angle is The tapping plate 506 has a mesh-like perforated hole 518 on its end face (design range 30-50 degrees). The tapping plate 506 adopts a multi-group symmetrical spiral layout. Preferably, in this embodiment, the tapping plate 506 adopts a 3-group symmetrical layout, with at least three in each group, and the tapping plates 506 in the group are 15 degrees apart. The tapping plates 506 are spirally arranged along the outer side of the tapping roller 516.

[0044] In some implementations, please refer to the appendix. Figure 14-15 As shown, the thickness of the rear end of the striking plate 506 is smaller than that of the front end, and a vibration ring 519 is provided at the end away from the striking roller 516. This structure is similar to the tail of a rattlesnake and includes a base ring 5192 and multiple swaying rings 5191 nested in layers, with the upper swaying ring nested inside the lower swaying ring.

[0045] In this embodiment, the vibratory liquefaction assembly 5 includes a pair of impact roller support plates 515, which are vertically fixed to the bottom end of the fixed crossbeam 101 by bolts; the impact shaft 517 passes through the bearing seat of the impact roller support plate 515, and its outer wall is interference-fitted with the impact roller 516; multiple sets of impact plates 506 are provided on the outer side of the impact roller 516, and a rotary joint 511 is assembled at one end of the impact shaft 517 to connect to the feed pipe 6.

[0046] The striking plate 506 has a wedge-shaped structure, with its length pointing towards the center of the axis of the striking roller 516. It is detachably connected to the outer wall of the striking roller 516 through a dovetail tenon. The leading edge angle is 12 degrees and the trailing edge angle is 45 degrees. The end face of the striking plate 506 has a mesh-like hollow hole 518, which is a diamond-shaped through hole. The striking plate 506 adopts a three-group symmetrical spiral layout: each group contains three striking plates 506, with adjacent plates in the group spaced 15 degrees apart. The three groups are evenly distributed along the circumference of the striking roller 516 and are arranged in a spiral advancing manner.

[0047] A vibration ring 519 is connected to the end of the striking plate 506 away from the striking roller 516. The vibration ring 519 includes a base ring 5192 welded to the end of the plate body, and a multi-layered swaying ring 5191 nested from the inside to the outside. The inner swaying ring 5191 is sleeved on the base ring 5192 by an elastic buckle, and the middle and outer swaying rings are sleeved on the outside of the inner ring in sequence, with a gap of 0.5-1 mm between each ring.

[0048] During operation, when the striking shaft 517 drives the striking roller 516 to rotate, the wedge-shaped striking plate 506 cuts into the mudflat with a 12-degree leading edge angle. The acute angle design of the leading edge reduces the resistance to soil penetration, while the 45-degree trailing edge angle promotes the lifting of sediment. The mesh-like perforated holes 518 allow water to penetrate in both directions, accelerating the rise of pore water pressure. The three sets of spiral layouts allow the striking plate 506 to continuously and alternately impact the bottom surface, forming superimposed vibration waves. When the striking plate 506 is lifted away from the mudflat, the nested swaying ring 5191 generates high-frequency oscillation due to inertia. The high-frequency oscillation of the swaying ring 5191 causes the striking plate 506 to vibrate, which facilitates the removal of the sediment it carries, thereby achieving automatic dredging. After dredging, the striking plate 506 maintains a smooth surface, ensuring constant resistance during the next cut and avoiding increased power consumption. At the same time, during the rotation of the striking plate 506, it can also send shellfish floating in the liquefied layer into the harvester 1 for collection.

[0049] This implementation uses the high-frequency vibration of the shaking ring 5191 to remove the mud and sand carried by the slapping plate 506, solving the problem of increasing resistance caused by the accumulation of sediment on the plate in traditional equipment operations. Its chain collision design reduces the energy consumption of dredging by 90%, while avoiding the waste of water resources caused by spray dredging, achieving a dual breakthrough in resistance stability and eco-friendliness during the harvesting process.

[0050] A method of using a shellfish liquefaction harvesting device includes steps under different implementation methods. S1:1.1 Install and debug the equipment. Connect the fixed crossbeam 101 rigidly to the front frame of the collector 1 with bolts. Adjust the sliding gap between the guide rod 507 and the mounting plate 501 to ensure that the lifting plate 505 moves vertically without jamming. At the same time, check the tension of the chain or belt between the vibration motor 504 and the drive shaft to ensure stable power transmission.

[0051] 1.2 Start the vibration liquefaction component 5, drive the tracked vehicle 2 to the work area, bring the impact plate 506 close to the mudflat surface, turn on the vibration motor 504, drive the transmission shaft to rotate through the chain or belt, and the crank connecting rod 508 drives the lifting plate 505 to make vertical reciprocating motion (the frequency can be adjusted by the motor frequency converter). The guide rod 507 slides in the guide hole of the mounting plate 501, constraining the impact plate 506 to vertically impact the mudflat at a frequency of 5-10 times per second.

[0052] 1.3 Tidal flat liquefaction and harvesting: The 506 impact plate impacts the tidal flat at high frequency. The vibration wave increases the pore water pressure of the mud and sand, forming a fluid dynamic liquefaction layer with a thickness of about 10-15cm. After the shellfish detach from the bottom and float to the surface, the scraper of the harvester 1 collects the floating shellfish as the tracked vehicle 2 moves forward and sends them to the subsequent conveying components.

[0053] 1.4 After the operation is completed, turn off the vibration motor 504, raise the collector 1, and return to the unloading point to clean the equipment.

[0054] S2:2.1 Perform equipment installation and commissioning, confirm that the protective strip 5063a and the reinforcing strip 5064a are firmly welded, protect the impact plate body 5061a from gravel impact, and at the same time check that the permeable strip 5062a and the secondary permeable hole 5065a are not blocked, to ensure smooth water flow.

[0055] 2.2 Dynamic permeable liquefaction: After the equipment is started, the impact plate 506 impacts the mudflat at a frequency of 5-8 times / second. The permeable strip 5062a allows water to penetrate the plate in both directions, forming a vertical jet to accelerate the liquefaction of mud and sand. The secondary permeable hole 5065a promotes the lateral flow of water at the edge of the plate to avoid the accumulation of mud and sand. The protective strip 5063a protects the connection of the guide rod 507. The reinforcing strip 5064a inhibits the torsional deformation of the impact plate body 5061a, ensuring the stability of the structure under high-frequency impact.

[0056] 2.3 Shellfish separation and collection: After liquefaction, the mud and sand are mixed and suspended with the shellfish. The scraper of the harvester 1 transports the mixture to the filter assembly 3 to separate the shellfish from the mud and sand. During operation, the permeable strip 5062a and the secondary permeable hole 5065a are checked regularly for blockage by debris. If necessary, the machine is stopped for cleaning.

[0057] S3: 3.1 The water circulation system is started. The filter component 3 stores water (filtered wastewater) in advance. The water is pumped through the conveying pipe 6 to the multi-way valve 510 at the top of the lifting plate 505. The water enters the hollow guide rod 507 through the rotary joint 511 and is diverted to the vertical nozzle 512, the inclined nozzle 513 and the spiral nozzle 514.

[0058] 3.2 Composite impact and screening: Vibrating motor 504 drives the impact plate 506 to reciprocate vertically, while the nozzle system works synchronously: vertical nozzles 512 (4 nozzles) spray columnar water downwards to penetrate the mud and sand layer above the shellfish and reduce impact resistance; inclined nozzles 513 (10-12 nozzles, 45-degree angle) spray water laterally to remove silt from the edge of the plate and maintain the uniformity of the liquefaction layer; spiral nozzles 514 (24-32 nozzles, 45-degree spiral pattern) generate vortex jets, using the Magnus effect to drive the shellfish to spiral upwards, improving the separation efficiency by 30%; the impact net 5062b (wedge-shaped gradient mesh) screens simultaneously, with large mesh at the bottom filtering coarse sand and small mesh at the top trapping shellfish to prevent leakage.

[0059] 3.3 Dynamic harvesting and water recycling: When the slapping plate 506 is raised, the reinforcing strip 5064b and the guard strip 5063b form an upward flow channel, carrying the shellfish to the top of the slapping net 5062b, where they are collected by the scraper of the harvester 1. The water separated by the filter assembly 3 is treated and recycled to reduce water consumption.

[0060] S4: Rotary impact roller adjustment. The impact shaft 517 is connected to the feed pipe 6 through the rotary joint 511 to ensure good water tightness during rotation. Adjust the spiral layout of the impact plate 506 (wedge-shaped, leading edge angle 12, trailing edge angle 45) (3 sets symmetrical, each set spaced 15) to ensure uniform impact on the mudflats during rotation.

[0061] 4.2 Rotary impact and vibration dredging: The tracked vehicle 2 drives the impact roller 516 to rotate at 15-20 rpm. The front edge of the impact plate 506 cuts into the mudflat, and the rear edge lifts the mud and sand, forming a continuous vibration wave. The mesh-like perforated holes 518 on the end face of the impact plate 506 accelerate water flow penetration and promote liquefaction. The spiral layout ensures that the impact trajectory covers the entire working surface to avoid missed impacts. When the impact plate 506 is lifted away from the mudflat, the end vibration ring 519 (multi-layer shaking ring 5191) vibrates at high frequency due to inertia, shaking off the mud and sand carried by the plate, thus achieving automatic dredging.

[0062] 4.3 Shellfish transport and collection: The rotating slapping plate 506 pushes the shellfish in the liquefied layer toward the harvester 1, and collects them in conjunction with the scraper. During operation, the wear of the vibrating ring 519 is monitored, and the swaying ring 5191 is replaced regularly to maintain the dredging effect.

[0063] In the description of this invention, it should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0064] Furthermore, in the description of this invention, the terms upper, lower, front, back, left, right, top, bottom, inner, and outer, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] On the other hand, it should be noted that, unless otherwise explicitly specified and limited, the terms "set at," "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A shellfish vibration liquefaction harvesting device, comprising a harvester located at the front end of a tracked driver's vehicle, and a vibration liquefaction component located at the front end of the harvester, characterized in that: The vibratory liquefaction assembly includes a fixed crossbeam, a mounting plate, and a lifting plate arranged from top to bottom; a set of L-shaped rotating shaft brackets are mounted on the top of the mounting plate, and a drive shaft is provided between the rotating shaft brackets; it also includes a guide rod that passes through the mounting plate and the lifting plate, is fixedly connected to the lifting plate, slides with the mounting plate, and has a striking plate at its bottom end; a motor mounting frame is screwed to one side of the fixed crossbeam, and a vibratory motor is provided on its two inner sides, the vibratory motor driving the drive shaft through a chain or belt; crank connecting rods are mounted at both ends of the drive shaft, and its lower end passes through the mounting plate and connects to the lifting plate; the mounting plate is provided with a connecting support arm that connects to the fixed crossbeam, and the fixed crossbeam is fixedly connected to the collector; The striking plate includes a lower striking plate. A set of guard strips is provided along the length of the lower striking plate near the end of the guide rod. A reinforcing strip is provided at the opposite end of the guard strips. The top of the reinforcing strip is fixed to the guide rod. A rectangular hole penetrating from top to bottom is provided in the middle of the lower striking plate. A wedge-shaped mesh striking net is provided on the inner wall of the lower striking plate. The holes of the striking net are diamond-shaped, and the diameter of the holes of the striking net gradually decreases from the bottom to the top. A screen that cooperates with the striking net is provided between the opposite surfaces of the guard strips near the guide rod. Secondary water-permeable holes are also provided at both ends of the striking plate.

2. The shellfish liquefaction harvesting device according to claim 1, characterized in that, The tracked vehicle includes a conveying assembly, a filtering assembly, and a medicine tank mounted on the chassis. The filtering assembly collects and filters the mud and water generated by the conveying assembly and the collector, and then sends the filtered water to the vibrating liquefaction assembly via a water pump.

3. The shellfish liquefaction harvesting device according to claim 2, characterized in that, The top of the lifting plate is equipped with a multi-way valve that is connected to the filter assembly through a feed pipe. A rotary joint is sleeved on the outer side of the guide rod below the lifting plate. The rotary joint is connected to the feed pipe. The part of the guide rod below the lifting plate is hollow.

4. The shellfish liquefaction harvesting device according to claim 3, characterized in that, The bottom corner of the lower striking plate is provided with a vertical nozzle connected to the guide rod. Multiple inclined nozzles are arranged at intervals between two vertical nozzles along the length direction. The angle between the inclined nozzles and the horizontal plane is 30-60 degrees. Multiple equally spaced spiral nozzles are provided at the bottom of the striking net. The spiral nozzles are provided with guide grooves with a 30-60 degree spiral pattern.

5. The shellfish liquefaction harvesting device according to claim 1, characterized in that, The vibration liquefaction assembly includes a set of impact roller support plates at the bottom of the fixed crossbeam, and an impact shaft passing through the impact roller support plates. An impact roller is sleeved on the outside of the impact shaft, and multiple impact plates are provided on the outer side of the impact roller. A rotary joint is provided at one end of the impact shaft.

6. The shellfish liquefaction harvesting device according to claim 5, characterized in that, The striking plate is wedge-shaped, with its length pointing towards the center line of the striking roller, and is connected to the striking roller via a dovetail tenon. Its leading edge angle is... degrees, trailing edge angle is The striking plate has a mesh-like perforated end face and adopts a multi-set symmetrical spiral layout.

7. The shellfish liquefaction harvesting device according to claim 6, characterized in that, The thickness of the rear end of the striking plate is less than that of the front end, and a vibration ring is provided at the end away from the striking roller, including a base ring and multiple swaying rings nested in layers, with the upper swaying ring nested inside the lower swaying ring.

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