Spacing-adjustable shovel tooth combined type mud flat shellfish digging device

Abstract

The utility model discloses a shovel tooth combined type mud flat shellfish digging device with adjustable spacing, which relates to the technical field of mud flat shellfish digging operation, and comprises a cross beam and a plurality of digging shovels fixedly arranged on the cross beam, comb teeth are uniformly arranged among the digging shovels, the comb teeth are arranged on the cross beam, the spacing of the comb teeth is adjustable, and the shovel tooth combined type mud flat shellfish digging device is arranged on the cross beam. The digging shovel is provided with multiple types of protruding structures, and the comb teeth are designed to be of a gradually-changing-size structure. Due to the design of various protruding structures on the shovel body of the digging shovel, mud flat silt can be better cut during digging, soil entering resistance can be reduced, and soil adhesion is prevented. The comb teeth are of a size gradual change type structural design, the soil penetrating size is gradually changed during excavation, soil penetrating resistance can be reduced, and the hilling phenomenon is reduced. The digging shovel and the comb teeth are adopted for cooperative operation, the soil breaking capacity of the digging shovel can be kept, the soil penetrating resistance is reduced through the comb teeth, part of soil is screened out in the digging process, and the soil hilling phenomenon is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tidal flat shellfish excavation technology, specifically to a tidal flat shellfish excavation device with adjustable spacing of shovel teeth. Background Technology

[0002] Mudflat shellfish (such as clams, mud clams, and hard clams) are important marine aquaculture species in my country, characterized by their short growth cycle and high economic value. In recent years, with the growth of market demand, the scale of mudflat shellfish farming has continued to expand. Traditional manual harvesting methods, which mainly involve digging with tools such as rakes and hoes and then collecting the shellfish, suffer from low harvesting efficiency, high labor intensity, and high costs, making them unsuitable for large-scale farming and severely restricting the development of the industry.

[0003] Chinese patent CN116784287A discloses an intelligent razor clam farming and harvesting equipment and device, meeting people's demand for mechanized and intelligent razor clam farming and harvesting. It realizes intelligent operation of the entire life cycle of razor clam farming in tidal flats, including cultivation, planting, management, and harvesting, and features automation, mechanization, and digitalization, solving the problems of low labor efficiency and low harvest rate. Chinese patent CN111011319A discloses a shellfish harvesting machine, solving the problem of low efficiency in existing shellfish harvesting methods.

[0004] While existing tidal flat harvesting equipment has solved the problem of low efficiency in traditional manual digging, the core working component of the equipment, the digging device, directly affects the harvesting effect. Traditional digging devices generally rely on shovel blades to forcibly break the soil, but they suffer from insufficient soil breaking capacity and serious soil clogging problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes the following technical solution:

[0006] In a first aspect, this utility model provides a tidal flat shellfish digging device with adjustable spacing of shovel teeth, comprising: a crossbeam, a plurality of digging shovels fixedly mounted on the crossbeam, comb teeth evenly arranged between the digging shovels, the comb teeth being mounted on the crossbeam and the spacing of the comb teeth being adjustable, the digging shovels being provided with various types of protrusion structures, and the comb teeth adopting a size-gradient structure design.

[0007] In one possible implementation, the shovel body is curved, with a cutting edge at the front end. The protruding structure includes ridges along the digging direction on the shovel surface and multiple hemispherical protrusions on the back of the shovel body. The cutting edge ensures better soil penetration, the ridge design provides better cutting action on mud and sand during digging, and the curved shovel body and hemispherical protrusions reduce soil penetration resistance and prevent soil adhesion.

[0008] In one possible implementation, the comb teeth are truncated cones with the same curvature as the digging shovel, and the diameter of the truncated cone gradually increases from the entry end to the fixed end. During digging, the entry diameter gradually increases, which helps reduce entry resistance and minimizes soil clogging while ensuring digging rigidity. Because the comb teeth have relatively weak soil-penetrating and cutting capabilities, the curvature of the comb teeth matches the curvature of the digging shovel body, ensuring that the entry end of the comb teeth and the end of the digging shovel blade are on the same horizontal line, thereby ensuring that the digging shovel can penetrate and cut the soil during digging.

[0009] In one possible implementation, the comb teeth are mounted on the crossbeam via a sliding sleeve, the crossbeam has a sliding groove, the sliding sleeve is installed in the sliding groove via a fixing component, and the comb teeth are fixedly connected to the sliding sleeve.

[0010] In one possible implementation, the crossbeam includes a main beam, an upper beam, and a lower beam. The main beam has multiple sets of threaded holes for fixing the digging shovel. Both the upper and lower beams have sliding grooves. Each sliding groove includes a sliding sleeve side plate and an upper sliding sleeve plate and a lower sliding sleeve plate respectively located on both sides of the side plate. The upper sliding sleeve plate is mounted on the upper beam, and the lower sliding sleeve plate is mounted on the lower beam. Both the upper and lower beams have grooves on the sides where the sliding sleeves are mounted, with the groove length matching the groove length, for placing the sliding sleeve side plates. The sliding sleeve can be fixed with bolts and nuts. The sliding sleeve can move along the centerline of the groove. When adjusting the comb tooth spacing, first loosen the nuts, then move the sliding sleeve to the appropriate position, and then tighten the nuts. At this point, the sliding sleeve is fixed, and the comb tooth spacing can be determined. The number of comb teeth can be set according to harvesting requirements. When harvesting larger shellfish, the number of comb teeth can be reduced, and the inter-tooth distance increased to remove mud and sand during shellfish harvesting. When harvesting smaller shellfish, the number of comb teeth can be increased to reduce the spacing between the teeth and ensure that no shellfish are missed during the harvesting process.

[0011] In one possible implementation, mounting plates are provided at both ends of the crossbeam, and the mounting plates are used for fixed connection with the tidal flat harvesting equipment.

[0012] In one possible implementation, the digging shovel and the comb teeth are treated with a corrosion-resistant coating. This wear-resistant and corrosion-resistant coating extends the equipment's service life.

[0013] Secondly, this embodiment provides a method for using the adjustable-spacing shovel-tooth combination tidal flat shellfish digging device described in any possible implementation of the first aspect, including:

[0014] Determine the size of shellfish harvested from the mudflats;

[0015] The number of comb teeth between the digging shovels is adjusted according to the size of the shellfish so that the spacing between the comb teeth matches the size of the harvested shellfish.

[0016] After adjustment, the digging device is fixed to the tidal flat harvesting equipment using the mounting plate to carry out the harvesting of tidal flat shellfish.

[0017] In this embodiment of the invention, the multiple protruding structures on the shovel body enable better cutting of mud and sand in tidal flats during excavation, reduce soil penetration resistance, and prevent soil adhesion. The comb teeth feature a gradually changing size design, which helps reduce soil penetration resistance and minimizes soil clogging. The coordinated operation of the shovel and comb teeth maintains the shovel's soil-breaking ability while reducing soil penetration resistance through the comb teeth, and also removes some soil during excavation, further reducing soil clogging. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a tidal flat shellfish excavation device with adjustable spacing shovel teeth provided for an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the excavator shovel structure provided in an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the back of the excavator shovel provided in an embodiment of this utility model;

[0021] Figure 4 A schematic diagram of the comb tooth structure provided in an embodiment of this utility model;

[0022] Figure 5 A schematic diagram of the beam structure provided in this embodiment of the utility model;

[0023] Figure 6 A schematic diagram of the sliding sleeve structure provided in an embodiment of this utility model;

[0024] Figure 1-6 In Chinese, the symbol is represented as:

[0025] 1-Crossbeam, 2-Digging shovel, 3-Comb teeth, 4-Shovel body, 5-Shovel blade, 6-Raised ridge structure, 7-Hemispherical protrusion, 8-Entry end, 9-Fixed end, 10-Sliding sleeve, 11-Main beam, 12-Upper beam, 13-Lower beam, 14-Threaded hole, 15-Sliding groove, 16-Sliding sleeve side plate, 17-Sliding sleeve upper plate, 18-Sliding sleeve lower plate, 19-Groove, 20-Mounting plate. Detailed Implementation

[0026] The present solution will now be described in conjunction with the accompanying drawings and specific embodiments.

[0027] See Figure 1The adjustable-spacing shovel tooth combination tidal flat shellfish digging device provided in this embodiment includes: a crossbeam 1, a plurality of digging shovels 2 fixedly mounted on the crossbeam 1, comb teeth 3 evenly arranged between the digging shovels 2, the comb teeth 3 being mounted on the crossbeam 1 and the spacing of the comb teeth 3 being adjustable, the digging shovels 2 being provided with various types of protrusion structures, and the comb teeth 3 adopting a size-gradient structure design.

[0028] See Figure 2 and Figure 3 The shovel body 4 of the excavating shovel 2 is curved, and the front end of the shovel body 4 is provided with a cutting edge 5. The protruding structure includes a convex ridge structure 6 on the shovel surface along the digging direction of the device and multiple hemispherical protrusions 7 on the back of the shovel body 4. The cutting edge 5 can ensure better soil penetration, the convex ridge design can have a better cutting effect on the mud and sand of the tidal flats during excavation, and the curved shovel body 4 and hemispherical protrusions 7 can reduce soil penetration resistance and prevent soil adhesion.

[0029] See Figure 4 The comb teeth 3 are truncated cones with the same curvature as the digging shovel 2, and the diameter of the truncated cone gradually increases from the soil entry end 8 to the fixed end 9. During digging, the soil entry diameter gradually increases, which helps reduce soil entry resistance and minimizes soil clogging while ensuring digging rigidity. Because the comb teeth 3 have relatively weak soil entry and cutting capabilities, the curvature of the comb teeth 3 matches the curvature of the shovel body 4 of the digging shovel 2, ensuring that the soil entry end 8 of the comb teeth 3 and the end of the cutting edge 5 of the digging shovel 2 are on the same horizontal line. This ensures that the digging shovel 2 can effectively enter and cut the soil during digging.

[0030] In this embodiment, the comb teeth 3 are mounted on the crossbeam 1 via a sliding sleeve 10. The crossbeam 1 is provided with a sliding groove 15. The sliding sleeve 10 is installed in the sliding groove 15 via a fixing component. The comb teeth 3 are fixedly connected to the sliding sleeve 10. In this embodiment, the fixed end 9 of the comb teeth 3 is directly welded to the sliding sleeve 10.

[0031] In this embodiment, the digging shovel 2 and the comb teeth 3 are structures treated with a corrosion-resistant coating. The wear-resistant and corrosion-resistant coating extends the service life of the equipment.

[0032] See Figure 5 The crossbeam 1 includes a main beam 11, an upper beam 12, and a lower beam 13. The main beam 11 is provided with multiple sets of threaded holes 14 for fixing the digging shovel 2, and the upper beam 12 and lower beam 13 are both provided with sliding grooves 15. Figure 6As shown, the slide groove 15 includes a sliding sleeve side plate 16 and a sliding sleeve upper plate 17 and a sliding sleeve lower plate 18 respectively disposed on both sides of the sliding sleeve side plate 16. The sliding sleeve upper plate 17 is mounted on the upper beam 12, and the sliding sleeve lower plate 18 is mounted on the lower beam 13. Both the upper beam 12 and the lower beam 13 have grooves 19 on the side where the sliding sleeve 10 is mounted. The length of the grooves 19 is the same as the length of the slide groove 15, and they are used to place the sliding sleeve side plate 16. The thickness of the sliding sleeve side plate 16 is the same as the depth of the groove 19 on the crossbeam 1, ensuring that the sliding sleeve side plate 16 and the crossbeam 1 are on the same plane on the side where the comb teeth 3 are mounted.

[0033] When installing the sliding sleeve 10, the side plate 16 of the sliding sleeve should be placed in the groove 19 of the crossbeam 1, and the upper plate 17 of the sliding sleeve should contact the upper beam 12. The bolts should be passed through the threaded hole 14 of the upper plate 17 and the sliding groove 15 of the upper beam 12 in sequence, and then the nuts should be tightened. The lower plate 18 of the sliding sleeve should contact the lower beam 13, and the bolts should be passed through the threaded hole 14 of the lower plate 18 and the sliding groove 15 of the lower beam 13 in sequence, and then the nuts should be tightened. At this time, the sliding sleeve 10 is fixed. The sliding sleeve 10 can move along the center line of the sliding groove 15. When it is necessary to adjust the spacing of the comb teeth 3, first loosen the nuts, then move the sliding sleeve 10, and when it is adjusted to the appropriate position, tighten the nuts again. At this time, the sliding sleeve 10 is fixed, and the spacing of the comb teeth 3 can be determined.

[0034] The number of comb teeth 3 can be set according to harvesting requirements. 0-6 sliding sleeves 10 can be set within the groove 19. In this embodiment, 4 comb teeth 3 are set within each groove 19. Of course, the above-mentioned number is only illustrative. When harvesting larger shellfish, the number of comb teeth 3 can be reduced, and the distance between the teeth increased to remove mud and sand during harvesting. When harvesting smaller shellfish, the number of comb teeth 3 can be increased to reduce the distance between the teeth, ensuring no shellfish are missed during harvesting.

[0035] In this embodiment, mounting plates 20 are provided at both ends of the crossbeam 1. The mounting plates 20 are used to be fixedly connected to the tidal flat harvesting equipment, so as to facilitate the digging device to be mounted on the tidal flat harvesting equipment for digging tidal flat shellfish.

[0036] Corresponding to the adjustable-spacing shovel tooth combination mudflat shellfish digging device provided in the above embodiment, this embodiment also provides its usage method.

[0037] S1, determine the size of shellfish harvested from the mudflats.

[0038] S2, adjust the number of comb teeth between the digging shovels according to the size of the shellfish so that the spacing between the comb teeth matches the size of the harvested shellfish.

[0039] When harvesting larger shellfish, the number of comb teeth can be reduced and the distance between the teeth increased to sift out mud and sand during the harvesting process. When harvesting smaller shellfish, the number of comb teeth can be increased to reduce the distance between the teeth and ensure that no shellfish are missed during the harvesting process.

[0040] S3. After adjustment, the digging device is fixed to the tidal flat harvesting equipment using the mounting plate to carry out the tidal flat shellfish harvesting operation.

[0041] In this embodiment of the invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects have an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0042] The above description is merely a specific embodiment of this utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A combination of adjustable-spacing shovel teeth for excavating shellfish in tidal flats, characterized in that, include: A crossbeam, multiple digging shovels fixedly mounted on the crossbeam, comb teeth evenly arranged between the digging shovels, the comb teeth being mounted on the crossbeam and the spacing of the comb teeth being adjustable, the digging shovels having various types of protrusion structures, and the comb teeth adopting a size-gradient structure design.

2. The pitch adjustable spade combi-dredge for shellfish harvesting according to claim 1, wherein, The shovel body is curved, and the front end of the shovel body is provided with a blade. The protruding structure includes a convex ridge structure on the shovel surface along the digging direction of the device and multiple hemispherical protrusions on the back of the shovel body.

3. The pitch adjustable spade bit modular beach clam excavating apparatus of claim 2, wherein, The comb teeth are truncated cones with the same curvature as the digging shovel, and the diameter of the truncated cones gradually increases from the soil entry end to the fixed end.

4. The pitch adjustable spade bit modular beach clam excavating apparatus of claim 1, wherein, The comb teeth are mounted on the crossbeam via a sliding sleeve. The crossbeam has a sliding groove, and the sliding sleeve is installed in the sliding groove via a fixing component. The comb teeth are fixedly connected to the sliding sleeve.

5. The adjustable pitch, tine combination shell dredging device of claim 4, wherein, The crossbeam includes a main beam, an upper beam, and a lower beam. The main beam has multiple sets of threaded holes for fixing the digging shovel. Both the upper and lower beams are provided with sliding grooves. Each sliding groove includes a sliding sleeve side plate and an upper sliding sleeve plate and a lower sliding sleeve plate respectively disposed on both sides of the sliding sleeve side plate. The upper sliding sleeve plate is installed on the upper beam, and the lower sliding sleeve plate is installed on the lower beam. Both the upper and lower beams have grooves on the side where the sliding sleeve is installed. The length of the grooves is the same as the length of the sliding grooves, which are used to place the sliding sleeve side plates.

6. The pitch adjustable spade bit modular beach clam excavating apparatus of claim 1, wherein, Mounting plates are provided at both ends of the crossbeam, and the mounting plates are used to fix and connect to the tidal flat harvesting equipment.

7. The pitch adjustable spade bit modular beach clam excavating apparatus of claim 1, wherein, The excavating shovel and the comb teeth are structures treated with an corrosion coating.

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