Mudflat shellfish harvesting double-layer shovel device and shellfish harvesting equipment thereof

Abstract

The utility model discloses a mud flat shellfish harvesting double-layer shovel device and shellfish harvesting equipment thereof. The mud flat shellfish harvesting double-layer shovel device comprises a supporting frame body, a harvesting double-layer shovel and a double-layer shovel driving mechanism. The harvesting double-layer shovel is rotatably installed on the supporting frame body and comprises a first harvesting shovel body and a second harvesting shovel body, the first harvesting shovel body is used for shoveling surface-layer substrates, the second harvesting shovel body is used for harvesting second-layer substrates and shellfish, and a plurality of screen holes are formed in the surface of the second harvesting shovel body; the double-layer shovel driving mechanism is used for driving the harvesting double-layer shovel to vibrate so as to complete shellfish harvesting; compared with an existing single-layer shovel, the harvesting double-layer shovel has the advantages that after the first harvesting shovel in the harvesting double-layer shovel shovels the surface mud flat substrate, the harvesting resistance of the second harvesting shovel can be reduced, in addition, the thickness of the mud flat substrate harvested by the second harvesting shovel is small, screening of mactra veneriformis is facilitated, the mactra veneriformis screening efficiency is improved, and the working efficiency of the mactra veneriformis is improved. Therefore, the overall harvesting efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of beach harvesting equipment, in particular to a double-layer shovel device for harvesting beach shellfish and the shellfish harvesting equipment thereof. Background Art

[0002] Shellfish aquaculture is a leading sector in China's fisheries industry, making a significant contribution to the development of the country's fishery economy. As one of the main commercial shellfish species, the four-cornered clam boasts a large cultivation area and high yields. However, the mudflats, the primary habitat of four-cornered clams, present a very challenging harvesting environment. Harvesting is a crucial step in the four-cornered clam aquaculture process, and factors such as harvesting methods, efficiency, cost, and effectiveness directly impact the yield and profitability of clam aquaculture.

[0003] The Chinese utility model patent application filed by our team, with publication number CN221329915U, discloses a combined harvester for harvesting clams from mudflats. The harvester includes a harvesting mechanism for harvesting clams and a crawler mechanism. The harvesting mechanism is located at the front of the crawler mechanism and drives the harvesting mechanism to harvest the clams from the mudflat substrate. During the harvesting process, the harvesting mechanism uses a harvesting shovel in the harvesting mechanism to harvest the mudflat substrate and the clams together. The shovel is then screened by a screening mechanism to complete the harvest. However, the harvesting shovel needs to penetrate deep into the mudflat substrate, where it is approximately 100 mm thick. This creates significant resistance between the shovel and the mudflat substrate. Furthermore, the harvested 100 mm thick mudflat substrate and the clams must be screened together. This results in a low efficiency screening process, significantly impacting harvesting efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a double-layer shovel device for harvesting mudflat shellfish and shellfish harvesting equipment thereof, aiming to solve the above-mentioned problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] In a first aspect, the present application provides a double-layer shovel device for harvesting shellfish on mudflats, comprising:

[0007] Support frame;

[0008] A double-layer harvesting shovel, with connecting rod assemblies rotatably mounted on both sides, the other end of which is rotatably mounted on the support frame; the double-layer harvesting shovel comprises a first harvesting shovel and a second harvesting shovel spaced apart and mounted to the bottom of the first harvesting shovel, the first harvesting shovel being used to remove surface sediments, the second harvesting shovel being used to harvest the second layer of sediments and shellfish, and the surface of the second harvesting shovel being provided with a plurality of sieve holes;

[0009] The double-layer shovel driving mechanism is used to drive the harvesting double-layer shovel to vibrate to complete the shellfish harvesting, including a crankshaft connecting rod mechanism and a driving device. One end of the crankshaft connecting rod mechanism is transmission connected to the driving device, and the other end is transmission connected to the connecting rod assembly to realize the vibration of the harvesting double-layer shovel to harvest shellfish.

[0010] In a possible implementation, the connecting rod assembly includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are spaced apart.

[0011] In one possible implementation, the crankshaft-connecting rod mechanism includes a crankshaft and a driving connecting rod, one end of the crankshaft is transmission-connected to the output end of the driving device, the other end of the crankshaft is rotatably connected to one end of the driving connecting rod, and the other end of the driving connecting rod is rotatably connected to the second connecting rod.

[0012] In a possible implementation, a lifting drive mechanism for driving the double-layer harvesting shovel to move up and down is installed on the support frame.

[0013] In a possible implementation, the lifting drive mechanism includes a connecting shaft, a rack, and a drive motor;

[0014] The support frame is provided with a track and a strip groove, the rack is slidably mounted in the track, one end of the connecting shaft is fixedly mounted on one end of the rack, and the connecting shaft is located in the strip groove, and the other end of the connecting shaft is rotatably mounted on the first connecting rod;

[0015] The drive motor is installed to one end of the strip groove, and a transmission gear is installed on the output shaft of the drive motor. The transmission gear is engaged with the rack for transmission, and is used to drive the rack to link the first connecting rod to move, so as to realize the lifting and lowering of the double-layer harvesting shovel.

[0016] In a possible implementation, there are two lifting drive mechanisms, and the two lifting drive mechanisms are installed on both sides of the support frame.

[0017] In a possible implementation, a plurality of soil-breaking plowshares arranged at intervals are fixedly connected to the bottom end surface of the first harvesting shovel.

[0018] In a possible implementation, there are two groups of the crankshaft-connecting rod mechanisms, which are mounted on both sides of the double-layer harvesting shovel, and the drive device is in transmission connection with both groups of the crankshaft-connecting rod mechanisms.

[0019] In a second aspect, the present application also provides a shellfish harvesting device, including a vehicle body device for walking, and also including a double-layer shovel device for harvesting tidal flat shellfish as described in the first aspect above.

[0020] In a possible implementation, the support frame of the double-layer shovel device for harvesting mudflat shellfish is mounted on the first end of the vehicle device, and the drive devices in the double-layer shovel drive mechanism are all mounted on the body of the vehicle device.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] In the present invention, compared with the existing single-layer shovel, the double-layer harvesting shovel can reduce the harvesting resistance of the second harvesting shovel after the first harvesting shovel removes the surface mudflat substrate. In addition, the thickness of the mudflat substrate harvested by the second harvesting shovel is smaller, which is also convenient for screening the four-cornered clams, improves the screening efficiency of the four-cornered clams, and thus can improve the overall harvesting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of the utility model when viewed from above;

[0025] Figure 3 For this utility model Figure 2 Enlarged schematic diagram of point A in the middle.

[0026] Markings in the figure:

[0027] 1. Support frame;

[0028] 2. Double-layer harvesting shovel; 201. First harvesting shovel; 202. Second harvesting shovel; 203. Sieve hole;

[0029] 3. Connecting rod assembly; 301, first connecting rod; 302, second connecting rod;

[0030] 4. Driving device; 5. Crankshaft; 6. Driving connecting rod; 7. Connecting shaft; 8. Rack; 9. Driving motor;

[0031] 10. Track; 101. Strip groove;

[0032] 11. Transmission gear; 12. Soil-breaking plowshare; 13. Vehicle body device; 14. Transmission device; 15. Screening transmission chain device. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1 A double-layered shovel device for harvesting mudflat shellfish is described below. This device can be used to harvest shellfish, such as clams, Manila clams, and other shellfish. Alternatively, it can also be used to harvest tuber crops buried in the substrate, such as potatoes, sweet potatoes, and peanuts. The following description focuses solely on the harvesting conditions and scenarios for clams, and does not cover other harvesting conditions.

[0035] First, use Figure 1-Figure 2 The overall structure of the double-layer shovel device for harvesting shellfish on mudflats is described below. Figure 1 It is a three-dimensional schematic diagram of the present utility model. Figure 2 It is a three-dimensional schematic diagram of the utility model in an upward-looking state.

[0036] The double-layer shovel device for harvesting tidal shellfish comprises a support frame 1, a double-layer shovel 2 for harvesting tidal shellfish, and a double-layer shovel driving mechanism, wherein:

[0037] The overall structure of the support frame 1 is roughly composed of two spaced-apart beams and a rectangular frame, which can be used for the installation of the harvesting double-layer shovel 2. That is, the harvesting double-layer shovel 2 is installed on the support frame 1.

[0038] The double-layer harvesting shovel 2 includes a first harvesting shovel 201 and a second harvesting shovel 202. The second harvesting shovel 202 is installed at a distance from the bottom of the first harvesting shovel 201. The first harvesting shovel 201 and the second harvesting shovel 202 can be integrally connected or detachably installed by a bolt structure.

[0039] The first harvesting shovel 201 can be used to remove the surface mudflat substrate, and the second harvesting shovel 202 can be used to harvest the second layer of substrate and four-cornered clams. A plurality of sieve holes 203 are provided on the surface of the second harvesting shovel 202. When the double-layer harvesting shovel 2 is in a vibrating state, the sieve holes 203 are strip-shaped and evenly arranged in a rectangular array on the surface of the second harvesting shovel 202. The four-cornered clams in the second layer of substrate can be preliminarily screened out through the plurality of sieve holes 203.

[0040] Connecting rod assemblies 3 are rotatably mounted on both sides of the double-layered harvesting shovel 2, while the other ends of the connecting rod assemblies 3 are rotatably mounted to the support frame 1. The connecting rod assembly 3 comprises a first connecting rod 301 and a second connecting rod 302, spaced apart from each other. Specifically, one end of the first connecting rod 301 and the second connecting rod 302 can be hingedly mounted to the double-layered harvesting shovel 2, while the other ends can be hingedly mounted to the support frame 1. The coordinated mounting of the first connecting rod 301 and the second connecting rod 302 allows the double-layered harvesting shovel 2 to reciprocate relative to the support frame 1, enabling subsequent vibration harvesting of clams buried in the mudflat substrate.

[0041] The double-layer shovel drive mechanism can be used to drive the double-layer harvesting shovel 2 to vibrate to complete the shellfish harvesting. The double-layer shovel drive mechanism includes a crankshaft connecting rod mechanism and a drive device 4. One end of the crankshaft connecting rod mechanism is transmission-connected to the drive device 4, and the other end is transmission-connected to the connecting rod assembly 3. The crankshaft connecting rod mechanism is driven by the drive device 4 to operate, which can realize the vibration harvesting of the double-layer harvesting shovel 2.

[0042] In this embodiment, when harvesting clams on a mudflat, a double-layered harvesting shovel 2 and a support frame 1 are mounted on the front end of a vehicle body 13. A first harvesting shovel 201 is used to remove the surface mudflat substrate. Before removing the surface mudflat substrate, the depth of the first harvesting shovel 201's insertion into the soil is controlled based on the burial characteristics of the shells. Specifically, the surface mudflat substrate where no clams are buried is removed. The removed surface mudflat substrate can be transported to the exterior of the vehicle body 13 via the conveyor device 14 within the vehicle body 13. A second harvesting shovel 202, inserted below the burial depth of the shells, is used to harvest the second layer of substrate and the clams. The harvested second layer of substrate and clams can be screened through a plurality of sieve holes 203, thereby preliminarily screening out the clams from the second layer of substrate. The clams are then further transported and screened via the screening conveyor chain device 15 within the vehicle body 13. Through the double-layer harvesting method of the first harvesting shovel 201 and the second harvesting shovel 202, compared with the existing single-layer shovel, after the first harvesting shovel 201 removes the surface mudflat substrate, the harvesting resistance of the second harvesting shovel 202 can be reduced. In addition, the thickness of the mudflat substrate where the four-cornered clams are buried is harvested by the second harvesting shovel 202. It is also convenient for screening the four-cornered clams, improving the screening efficiency of the four-cornered clams, and thus can improve the overall harvesting efficiency.

[0043] In some embodiments, to drive the double-layered harvesting shovel 2 for vibratory harvesting of clams, two crankshaft-connecting rod mechanisms can be provided, with the two crankshaft-connecting rod mechanisms mounted symmetrically on either side of the double-layered harvesting shovel 2. A drive device 4 is in transmission connection with both crankshaft-connecting rod mechanisms, driving them to operate synchronously. This in turn allows the two crankshaft-connecting rod mechanisms to work in conjunction with the double-layered harvesting shovel 2 to achieve vibratory harvesting of clams.

[0044] The drive device 4 may include a mounting frame, a drive motor, and a T-type commutator. The mounting frame is fixedly mounted to the vehicle body of the vehicle body device 13. The drive motor and the T-type commutator are both mounted to the mounting frame. The drive motor is connected to the T-type commutator in a driving manner to drive the T-type commutator to rotate. Output shafts are provided on both sides of the T-type commutator. The two output shafts are used to drive two sets of crankshaft connecting rod mechanisms. When the two sets of crankshaft connecting rod mechanisms operate synchronously, they can drive the harvesting double-layer shovel 2 to achieve vibration harvesting of four-cornered clams.

[0045] Regarding the specific structure of the crankshaft-connecting rod mechanism, the following only describes the detailed structure and working principle of one group of the crankshaft-connecting rod mechanism. The crankshaft-connecting rod mechanism of the other group is completely identical in structure and working principle and will not be described in detail.

[0046] like Figure 1 As shown, the crankshaft-connecting rod mechanism includes a crankshaft 5 and a drive connecting rod 6. One end of the crankshaft 5 is drivingly connected to the output end of the drive device 4. Specifically, one end of the crankshaft 5 is fixedly mounted to the output shafts on both sides of the T-shaped commutator. The other end of the crankshaft 5 is rotatably connected to one end of the drive connecting rod 6, and the other end of the drive connecting rod 6 is rotatably connected to the second connecting rod 302. When the harvesting double-layer shovel 2 is harvesting clams, the drive device 4 drives the crankshaft 5 to rotate. The rotating crankshaft 5 drives the drive connecting rod 6 to reciprocate back and forth, thereby driving the second connecting rod 302, the first connecting rod 301, and the harvesting double-layer shovel 2, thereby achieving vibratory harvesting.

[0047] In some embodiments, as Figure 1 As shown, Figure 1 This is a three-dimensional schematic diagram of the present invention. A lifting drive mechanism is mounted on the support frame 1 to drive the double-layer harvesting shovel 2 up and down. Two lifting drives are mounted on either side of the support frame 1. While the double-layer harvesting shovel 2 is harvesting, the lifting drive mechanism lowers the shovel 2. After the harvesting operation is complete, the lifting drive mechanism raises the shovel 2 to allow the vehicle 13 to be moved to another location.

[0048] like Figure 2 and Figure 3 As shown, Figure 2This is a three-dimensional schematic diagram of the utility model when viewed from above. Figure 3 For this utility model Figure 2 The lifting drive mechanism includes a connecting shaft 7, a rack 8 and a drive motor 9.

[0049] To mount the connecting shaft 7 and rack 8 to the support frame 1, a track 10 and a strip groove 101 are defined in the support frame 1. The bottom of the rack 8 can be provided with a mounting structure, such as a slider and slot structure, for sliding the rack 8 into the track 10. One end of the connecting shaft 7 is fixedly mounted to one end of the rack 8, and the connecting shaft 7 is positioned within the strip groove 101. The other end of the connecting shaft 7 is rotatably mounted to the first connecting rod 301. During use, the rack 8 drives the connecting shaft 7 to reciprocate within the track 10. The reciprocating movement of the connecting shaft 7 drives the first connecting rod 301 to move, thereby enabling the horizontal movement of the first connecting rod 301 to drive the double-layer harvesting shovel 2 to move upward or downward.

[0050] In order to drive the connecting shaft 7 and the rack 8 to move along the direction of the track 10, the driving motor 9 is installed at one end of the strip groove 101. The output shaft of the driving motor 9 is installed with a transmission gear 11. The transmission gear 11 is meshed with the rack 8 for transmission. When the height of the harvesting double-layer shovel 2 is controlled to be raised or lowered, the position of the rack 8 can be driven to move by controlling the forward or reverse rotation of the driving motor 9. The moved rack 8 can be linked to the movement of the first connecting rod 301, thereby realizing the raising and lowering of the harvesting double-layer shovel 2.

[0051] In some embodiments, as Figure 2 As shown, Figure 2 This is a perspective diagram of the present invention viewed from above. A plurality of spaced-apart soil-breaking plowshares 12 are fixedly attached to the bottom end surface of the first harvesting shovel 201. These soil-breaking plowshares 12 are spaced a certain distance from the first end of the first harvesting shovel 201. In this embodiment, while the first harvesting shovel 201 harvests the surface mudflat substrate, the soil-breaking plowshares 12 provide a preliminary loosening and breaking function for the underlying mudflat substrate, enhancing the vibratory screening efficiency of the second harvesting shovel 202 and improving overall harvesting efficiency.

[0052] like Figure 1As shown, an embodiment of the present invention also provides a shellfish harvesting device comprising a vehicle body 13 for movement and the aforementioned double-layer shovel device for harvesting tidal flat shellfish. The support frame 1 of the double-layer shovel device is mounted to the first end of the vehicle body 13, and the drive device 4 of the double-layer shovel drive mechanism is mounted to the body of the vehicle body 13. To achieve integrated harvesting, a conveyor device 14 is mounted on the vehicle body 13, located to one side of the first harvesting shovel 201. The conveyor device 14 transports the surface tidal flat substrate harvested by the first harvesting shovel 201 to the exterior of the vehicle body 13. A screening conveyor chain device 15 is mounted at the bottom of the conveyor device 14, located to one side of the second harvesting shovel 202. During operation, the screening conveyor chain device 15 further vibrates and screens the tidal flat substrate and clams, screening out-of-size clams to the exterior of the vehicle body 13. Clams of acceptable size are then transferred to a collection basket.

[0053] In the description of the present invention, it should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0054] In addition, in the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0055] On the other hand, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed on," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A double-layer shovel device for harvesting shellfish on mudflats, characterized in that: include: Support frame; A double-layer harvesting shovel, with connecting rod assemblies rotatably mounted on both sides, the other end of which is rotatably mounted on the support frame; the double-layer harvesting shovel comprises a first harvesting shovel and a second harvesting shovel spaced apart and mounted to the bottom of the first harvesting shovel, the first harvesting shovel being used to remove surface sediments, the second harvesting shovel being used to harvest the second layer of sediments and shellfish, and the surface of the second harvesting shovel being provided with a plurality of sieve holes; The double-layer shovel driving mechanism is used to drive the harvesting double-layer shovel to vibrate to complete the shellfish harvesting, including a crankshaft connecting rod mechanism and a driving device. One end of the crankshaft connecting rod mechanism is transmission connected to the driving device, and the other end is transmission connected to the connecting rod assembly to realize the vibration of the harvesting double-layer shovel to harvest shellfish.

2. The double-layer shovel device for harvesting mudflat shellfish according to claim 1, characterized in that: The connecting rod assembly includes a first connecting rod and a second connecting rod, and the first connecting rod is spaced apart from the second connecting rod.

3. The double-layer shovel device for harvesting mudflat shellfish according to claim 2, characterized in that: The crankshaft-connecting rod mechanism includes a crankshaft and a driving connecting rod. One end of the crankshaft is transmission-connected to the output end of the driving device, the other end of the crankshaft is rotatably connected to one end of the driving connecting rod, and the other end of the driving connecting rod is rotatably connected to the second connecting rod.

4. The double-layer shovel device for harvesting mudflat shellfish according to claim 2, characterized in that: The support frame is provided with a lifting drive mechanism for driving the double-layer harvesting shovel to move up and down.

5. The double-layer shovel device for harvesting mudflat shellfish according to claim 4, characterized in that: The lifting drive mechanism includes a connecting shaft, a rack and a drive motor; The support frame is provided with a track and a strip groove, the rack is slidably mounted in the track, one end of the connecting shaft is fixedly mounted on one end of the rack, and the connecting shaft is located in the strip groove, and the other end of the connecting shaft is rotatably mounted on the first connecting rod; The drive motor is installed to one end of the strip groove, and a transmission gear is installed on the output shaft of the drive motor. The transmission gear is engaged with the rack for transmission, and is used to drive the rack to link the first connecting rod to move, so as to realize the lifting and lowering of the double-layer harvesting shovel.

6. The double-layer shovel device for harvesting mudflat shellfish according to claim 4 or 5, characterized in that: There are two lifting drive mechanisms, which are installed on both sides of the support frame.

7. The double-layer shovel device for harvesting mudflat shellfish according to claim 1, characterized in that: A plurality of soil-breaking plowshares arranged at intervals are fixedly connected to the bottom end surface of the first harvesting shovel.

8. The double-layer shovel device for harvesting mudflat shellfish according to claim 1, characterized in that: There are two groups of the crankshaft connecting rod mechanisms, which are installed on both sides of the double-layer harvesting shovel. The driving device is in transmission connection with the two groups of the crankshaft connecting rod mechanisms.

9. A shellfish harvesting device comprising a vehicle body device for traveling, characterized in that: It also includes the double-layer shovel device for harvesting mudflat shellfish as described in any one of claims 1 to 8.

10. The shellfish harvesting device according to claim 9, characterized in that The support frame in the double-layer shovel device for harvesting mudflat shellfish is installed on the first end of the vehicle body device, and the driving devices in the double-layer shovel driving mechanism are all installed on the body of the vehicle body device.

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