A sorting machine for intelligent selection of river crabs

Abstract

The application discloses a kind of river crab intelligent selection sorting machines in river crab sorting technical field, including upper support frame, unloading frame, unloading frame is provided with sorting piece, and upper support frame is fixedly installed with feeding belt, the upper surface of feeding belt is flush with the upper surface of sorting piece, and can drive river crab to move to sorting piece direction, the side of the upper surface of feeding belt close to sorting piece is provided with material limiting unit, and material limiting unit is provided with multiple groups and evenly distributed on feeding belt;Support block, support block is rotatably connected between two groups of feeding baffle of material limiting unit, support block is provided with horizontal and vertical two kinds of state, the number of river crab that the application is flowed into sorting piece by material limiting unit opening and closing control feeding belt, ensure that river crab on feeding belt can pass through between material limiting unit alone, so that river crab can be evenly distributed on sorting piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of river crab sorting, in particular to a sorting machine for intelligent selection of river crabs. BACKGROUND

[0002] The existing river crab sorting is roughly based on weight and size as screening standards. When still using weight as the screening standard, screening is mostly assisted by setting a weighing device. In the existing sorting machine, whether using weight or size as the screening standard, the river crabs mostly need to be individually transported to the weighing device of the sorting machine to avoid multiple river crabs entering the weighing device, which causes the weighing data to be misplaced, and the condition that the sorted river crabs do not meet the standard, so the river crabs need to be manually one-to-one fed into the weighing barrel of the sorting machine, or the river crabs are evenly placed on the conveying belt by manual operation, and then the conveying belt transports the evenly distributed river crabs to the weighing device of the sorting machine to ensure that the river crabs can individually enter the weighing device of the river crab sorting machine. This requires manual assistance for feeding the river crabs to the sorting machine, which consumes a lot of manpower and affects the sorting efficiency of the sorting machine. SUMMARY

[0003] The technical problem of the present application is to provide a sorting machine for intelligent selection of river crabs, which controls the number of river crabs flowing into the sorting element through the opening and closing of the material limiting unit, ensures that the river crabs on the feeding belt can pass through the material limiting unit individually, and makes the river crabs evenly distributed on the sorting element.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a sorting machine for intelligent selection of river crabs, comprising an upper support frame and a lower discharge frame, the lower discharge frame and the upper support frame are arranged in front and back, and the two sides of the upper support frame and the lower discharge frame are connected by connecting rods; a sorting element is arranged above the lower discharge frame, and the sorting element can slide on the lower discharge frame; a feeding belt is fixedly installed on the upper support frame, the upper surface of the feeding belt is flush with the upper surface of the sorting element, and the feeding belt can drive the river crabs to move towards the sorting element; a material limiting assembly is arranged on one side of the upper surface of the feeding belt close to the sorting element;

[0005] The material limiting units are multiple and evenly distributed on the feeding belt. Each group of the material limiting units is composed of two adjacent feeding baffles. The feeding baffles are rotatably connected to the feeding belt by torsional springs. The feeding baffles of the material limiting units can automatically open and close with the sliding of the sorting element. In the natural state, the two adjacent feeding baffles in the material limiting unit are parallel to each other, and at this time, a single river crab is allowed to pass between the adjacent material limiting units;

[0006] The support block is provided with horizontal and vertical states, the support block in the horizontal state can make the two groups of upper feeding baffle plates of the material limiting unit expand to both sides, the support block in the vertical state can make the two groups of upper feeding baffle plates of the material limiting unit parallel to each other, and the transmission assembly is arranged between the support block and the sorting piece.

[0007] As a further scheme of the present application, the sorting piece is provided with a movable groove, a middle shaft is rotatably arranged at the middle position of the movable groove, sorting plates are symmetrically arranged on both sides of the middle shaft, a plurality of sorting holes are uniformly arranged on the sorting plates, the sorting holes are arranged between the material limiting units, limit partition plates are fixedly arranged on one side of the sorting plates, the limit partition plates on the two groups of sorting plates are arranged on the opposite sides, the limit partition plates are arranged on both sides of the sorting holes, the limit partition plates divide the sorting plates into a plurality of uniform sorting bins, the bottom of each sorting bin is provided with a weighing sensor and has a group of sorting holes, and the river crab with a size too small to pass through the sorting holes falls onto the discharging frame.

[0008] As a further scheme of the present application, the discharging frame is provided with a preferred discharging piece and a substandard product discharging piece, the upper ends of the preferred discharging piece and the substandard product discharging piece are vertically distributed with the middle shaft, the preferred discharging piece can transport the qualified river crabs downward to a processing line of the qualified river crabs, and the substandard product discharging piece can transport the substandard river crabs downward to a processing line of the substandard river crabs.

[0009] As a further scheme of the present application, the transmission assembly comprises a half gear, an inclined circular truncated cone and a toothed plate, the toothed plate is slidably connected with the upper support frame and is attached to the upper surface of the upper feeding baffle plate, the toothed plate can limit the river crabs transported by the upper feeding belt from moving from the upper surface of the upper feeding baffle plate to the direction of the sorting piece, the mounting rods are fixedly arranged on the support block, the limit gears are fixedly arranged at the upper ends of the mounting rods, and the limit gears are engaged with the toothed plate.

[0010] As a further scheme of the present application, the half gear is rotatably arranged on one side of the upper support frame, the sorting gear is fixedly arranged at one end of the middle shaft, the oscillation gear is rotatably arranged at the upper end of the upper support frame, and the oscillation gear and the sorting gear can be engaged with the toothed part of the half gear.

[0011] As a further scheme of the present application, the lower end of the inclined circular platform is fixedly installed with a connecting frame, one side of the lower end of the connecting frame is slidably connected with the upper support frame, and one side is fixedly connected with the sorting element, the side close to the upper support frame of the inclined circular platform is an inclined surface and is provided with a curved groove, a traction rod is arranged in the curved groove, the other end of the traction rod is fixedly installed with a driven disc, the driven disc is fixedly installed with a driven gear, the driven gear is rotatably connected with the upper support frame, and one end of the connecting frame is fixedly connected with the toothed plate.

[0012] As a further scheme of the present application, the upper support frame is rotatably installed with a mounting shaft at a position corresponding to the driven gear and the oscillating gear, a limiting element is fixedly installed on the mounting shaft, one end of the limiting element close to the driven gear is fixedly installed with an incomplete gear, the incomplete gear is engaged with the driven gear, and the edge of the driving disc is provided with an embedded rod which can be embedded into the limiting element.

[0013] As a further scheme of the present application, a rotating motor is fixedly installed on the upper support frame, and the output end of the rotating motor is fixedly connected with the half gear.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] Improve sorting efficiency: through the joint design of the limiting component and the sorting element, it is ensured that only a single river crab enters the sorting element each time. This precise sorting method avoids mutual extrusion between river crabs, ensures that each river crab can smoothly enter the sorting bin for weighing and classification, thereby improving the sorting efficiency. Multiple river crabs can accurately enter the sorting element at the same time, reducing the need for manual intervention.

[0016] Precise sorting and automatic control: the design of the sorting plate, the weighing sensor, the limiting partition plate and other components in the sorting element enables river crabs to be accurately classified according to their size and weight. The weighing sensor can effectively weigh river crabs in real time, ensuring accurate diversion of qualified and unqualified river crabs, improving the accuracy and automation of sorting, and reducing the error of manual operation.

[0017] Effectively solve the problem of river crab jamming: the design of the limiting unit, through the linkage of the adjustable baffle system and the supporting block, not only ensures that only a single river crab passes each time, but also prevents excessive river crabs from accumulating, avoiding the problem of jamming. This makes the sorting machine run more smoothly, reduces the failure rate, and prolongs the service life of the equipment.

[0018] Transmission assembly and oscillation system: The linkage design of oscillating gears and toothed plates effectively drives the oscillation of the sorting components, allowing unqualified river crabs to fall in time, avoiding inaccurate sorting or reduced efficiency caused by river crab retention. In addition, the support block driven by the transmission assembly can adjust the baffle to the appropriate position, ensuring that the sorting machine can accurately operate in each sorting process.

[0019] Precise shunting and discharging design: By setting the preferred discharging component and the substandard discharging component, qualified and unqualified river crabs can be sent to different processing lines. This shunting design not only improves the degree of automation of production, but also reduces the workload of manual classification, contributing to efficient and orderly production process.

[0020] Flexible adjustment and stability: The design of inclined circular table and curved groove allows the sorting components to be flexibly adjusted in the transverse direction, further improving the adaptability and stability of the sorting components. Through precise control of the motor and drive device, the entire equipment can operate stably under different working conditions, ensuring that the sorting process is not affected by changes in external environment.

[0021] Intelligent and automated control: The sorting machine adopts an intelligent control system that can automatically adjust the working state to achieve efficient sorting and classification. The combination of electric drive system, transmission assembly, and oscillation device realizes fully automated operation, reducing dependence on manual labor and greatly improving production efficiency and safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 is a schematic diagram of the structure of the right side of the present application;

[0025] Figure 3 is a schematic diagram of the structure of the present application Figure 2 is a partial schematic diagram of the structure at A in the present application;

[0026] Figure 4 is a partial schematic diagram of the structure at B in the present application Figure 2

[0027] Figure 5 is a schematic diagram of the structure of the left side of the present application;

[0028] Figure 6 is a schematic diagram of the structure of the present application Figure 5 ​Structure local view at C;

[0029] Figure 7 Mechanism sectional view of the present application;

[0030] Figure 8 Sectional view of the sorting member of the present application;

[0031] Figure 9 Principle diagram in the present application.

[0032] In the drawings: 1, upper support frame; 2, lower frame; 201, preferably lower material; 202, defective material; 3, sorting member; 4, movable slot; 5, upper feeding belt; 6, connecting frame; 7, toothed plate; 8, inclined circular table; 9, intermediate shaft; 10, sorting plate; 11, limiting partition plate; 12, sorting hole; 13, upper feeding baffle; 14, support block; 15, limiting gear; 16, mounting rod; 17, sorting gear; 18, half gear; 19, driven disc; 20, oscillating gear; 21, driving disc; 22, traction rod; 23, incomplete gear; 24, limiting member; 25, curved slot; 26, mounting shaft; 27, driven gear. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0034] Embodiment 1: Please refer to Figures 1-9 The intelligent sorting machine for river crab provided by the present application comprises an upper support frame 1 and a lower frame 2. The lower frame 2 is provided with a sorting member 3 above. The sorting member 3 can slide left and right on the lower frame 2. The upper support frame 1 is fixedly installed with an upper feeding belt 5. The upper surface of the upper feeding belt 5 is flush with the upper surface of the sorting member 3, and the upper feeding belt 5 can drive the river crab to move towards the sorting member 3. The side of the upper surface of the upper feeding belt 5 close to the sorting member 3 is provided with a material limiting assembly.

[0035] The material limiting unit 13 can automatically open and close with the left and right movement of the sorting member 3. In a natural state, the two groups of adjacent upper feeding baffles 13 in the material limiting unit are parallel to each other. At this time, the adjacent material limiting units allow a single river crab to pass through.

[0036] The support block 14 is rotatably connected between the two sets of feeding baffles 13 of the material limiting unit. The support block 14 has two states: horizontal and vertical. When the support block 14 is in the horizontal state, it can make the two sets of feeding baffles 13 of the material limiting unit expand to both sides. When the support block 14 is in the vertical state, it can make the two sets of feeding baffles 13 of the material limiting unit parallel to each other. A transmission component is provided between the support block 14 and the sorting component 3. The transmission component can drive the support block 14 to rotate while driving the sorting component 3 to move left and right.

[0037] During operation, the crabs in this invention move towards the sorting unit 3 via the feeding belt 5. The crabs fall onto the sorting unit 3, where they are weighed by weight and size to complete the sorting. During the flow of crabs to the sorting unit 3, a limiting unit blocks the flow. When the feeding baffle 13 of the limiting unit is in a parallel state, a single crab can pass through the limiting units to the sorting unit 3. When the feeding baffle 13 of the limiting unit is in an extended state (e.g., ...), ... Figure 4 As shown, the crabs on the feeding belt 5 are blocked by the feeding baffle 13 and cannot flow to the sorting unit 3. When the transmission component drives the sorting unit 3 to slide left and right, it vibrates the crabs on the sorting unit 3, so that the unqualified crabs on the sorting unit can fall quickly. At the same time, the transmission component drives the support block 14 to rotate back and forth. The support block 14 rotates from horizontal to vertical, so that the feeding baffles 13 of the limiting unit are horizontal to each other, so that the crabs can pass through the limiting units. Then the support block 14 rotates to the horizontal state again, so that the feeding baffles 13 of the limiting unit unfold to both sides. The feeding baffles 13 block the channel between the limiting units to restrict the subsequent crabs from passing through the limiting units, ensuring that only a single crab passes through the limiting unit at a time. This ensures that the crabs enter the sorting unit 3 evenly and quantitatively, avoiding the trouble of manually assisting in feeding the crabs. It allows multiple single crabs to enter the sorting unit 3 at the same time and accurately, improving the sorting efficiency.

[0038] In this invention, the support block 14 rotates from a horizontal to a vertical position, thereby making the feeding baffles 13 of the limiting unit horizontal with each other, allowing the crabs to pass between the limiting units. Then, the support block 14 rotates back to a horizontal position, causing the feeding baffles 13 of the limiting unit to expand to both sides. The feeding baffles 13 block the passage between the limiting units, restricting subsequent crabs from passing through the limiting units and ensuring that only a single crab passes through the limiting unit at a time. This ensures that the crabs enter the sorting unit 3 evenly and quantitatively, avoiding the trouble of manually assisting in feeding the crabs. It also allows multiple single crabs to enter the sorting unit 3 simultaneously and accurately, improving sorting efficiency.

[0039] The sorting piece 3 is provided with a movable slot 4, a middle shaft 9 is rotatably installed at the middle position of the movable slot 4, a sorting plate 10 is symmetrically installed at both sides of the middle shaft 9, a plurality of groups of sorting holes 12 are uniformly arranged on the sorting plate 10, the sorting holes 12 are all between the material limiting units, a limiting partition plate 11 is fixedly installed at one side of the sorting plate 10, the limiting partition plates 11 on the two groups of sorting plates 10 are oppositely arranged, the limiting partition plates 11 are arranged at both sides of the sorting holes 12, the limiting partition plates 11 divide the sorting plate 10 into a plurality of uniform sorting bins, the bottom of each group of sorting bins is provided with a weighing sensor and is provided with a group of sorting holes 12, and the river crabs with a size too small can fall into the discharging frame 2 through the sorting holes 12.

[0040] During work, the single river crab passes between the material limiting units, so that the single river crab can accurately fall into the sorting bin of the sorting piece, the single river crab in the sorting bin is weighed by the weighing sensor, the size of the qualified river crab is larger than that of the sorting hole 12, the size of the unqualified river crab is smaller than that of the sorting hole, and when the river crab falls onto the sorting plate 10 under the action of the feeding belt 5, the unqualified river crab falls from the sorting hole 12 under the action of sliding of the sorting piece 3.

[0041] The discharging frame 2 is provided with a preferred discharging piece 201 and a substandard product discharging piece 202, the upper ends of the preferred discharging piece 201 and the substandard product discharging piece 202 are vertically distributed with the middle shaft 9, the preferred discharging piece 201 can transport the qualified river crabs downward to a processing line of the qualified river crabs, and the substandard product discharging piece 202 can transport the substandard product river crabs downward to a processing line of the substandard product river crabs.

[0042] During work, the middle shaft 9 of the present application rotates to drive the sorting plate 10 to rotate, when the river crab just falls onto the sorting plate 10, the sorting plate 10 is above the substandard product discharging piece 202, at this time, the unqualified river crab falls onto the substandard product discharging piece 202 through the sorting hole 12, after the screening is completed, the middle shaft 9 rotates, the sorting plate 10 carrying the river crab rotates to the upper side of the preferred discharging piece 201, at this time, the limiting partition plate 11 on the sorting plate 10 is at the lower side (for example Figure 8 The river crabs on the sorting plate 10 all fall onto the preferred discharging piece 201 under the action of gravity, and the river crabs passing through the material limiting unit fall onto the sorting plate 10 close to the feeding belt 5 under the action of the feeding belt 5.

[0043] The transmission assembly comprises a half gear 18, an inclined circular table 8 and a toothed plate 7, the toothed plate 7 is in sliding connection with the upper support frame 1 and is in close contact with the upper surface of the upper feeding baffle 13, the toothed plate 7 can limit the river crabs transported by the feeding belt 5 from moving from the upper surface of the upper feeding baffle 13 to the direction of the sorting piece 3, a supporting block 14 is fixedly installed with an installation rod 16, the upper end of the installation rod 16 is fixedly installed with a limiting gear 15, and the limiting gear 15 is in meshing connection with the toothed plate 7.

[0044] When working, the tooth plate 7 in the application interacts with the limiting gear 15, the tooth plate 7 slides to the left to drive the limiting gear 15 to rotate, so that the mounting rod 16 rotates, and then the supporting block 14 at the bottom of the mounting rod 16 rotates from the horizontal state to the vertical state (as shown on the right side of Figure 9 ), and then the tooth plate 7 slides to the right to drive the limiting gear 15 to rotate reversely, so that the supporting block 14 returns to the horizontal state (as shown on the left side of Figure 9 ).

[0045] The half gear 18 is rotatably installed on one side of the upper support frame 1, one end of the intermediate shaft 9 is fixedly installed with the sorting gear 17, and the upper end of the upper support frame 1 is rotatably installed with the oscillating gear 20; the oscillating gear 20 and the sorting gear 17 can all be engaged with the tooth part of the half gear 18.

[0046] When working, the motor drives the half gear 18 to rotate, the tooth part of the half gear 18 interacts with the sorting gear 17, so as to drive the intermediate shaft 9 to rotate, the intermediate shaft 9 drives the sorting plate 10 to rotate, so that the sorting plate 10 above the substandard discharging piece 202 rotates above the preferred discharging piece 201.

[0047] The lower end of the inclined circular platform 8 is fixedly installed with the connecting frame 6, the lower end of the connecting frame 6 is slidably connected with the upper support frame 1 on one side and is fixedly connected with the sorting piece 3 on the other side; the side close to the upper support frame 1 of the inclined circular platform 8 is an inclined surface and is provided with a curved groove 25 thereon, the curved groove 25 is provided with a traction rod 22, the other end of the traction rod 22 is fixedly installed with a driven disc 19, the driven disc 19 is fixedly installed with a driven gear 27, the driven gear 27 is rotatably connected with the upper support frame 1, and the connecting frame 6 is fixedly connected with one end of the tooth plate 7.

[0048] When working, the driven disc 19 rotates forward, the driven disc 19 drives the traction rod 22 to rotate, the traction rod 22 moves in the curved groove 25, so as to drive the inclined circular platform 8 to move away from the upper support frame 1, the driven disc 19 reversely rotates, drives the inclined circular platform 8 to move close to the upper support frame 1, and the inclined circular platform 8 moves through the connecting frame 6 to drive the sorting piece 3 to slide left and right.

[0049] The mounting shaft 26 is rotatably installed on the upper support frame 1 at a position corresponding to the driven gear 27 and the oscillating gear 20, the mounting shaft 26 is fixedly installed with a limiting piece 24, one end of the limiting piece 24 close to the driven gear 27 is fixedly installed with an incomplete gear 23, the incomplete gear 23 is engaged with the driven gear 27, the edge of the driving disc 21 is provided with an embedded rod, and the embedded rod can be embedded into the limiting piece 24.

[0050] When the sorting plate 10 rotates to the horizontal state in the application, the tooth part of the half gear 18 starts to engage with the oscillating gear 20, the oscillating gear 20 rotates to drive the driving disc 21 to rotate, the driving disc 21 rotates to make the limiting piece 24 rotate around the mounting shaft 26 in the positive and negative directions through the embedded rod, so as to drive the incomplete gear 23 to rotate in the positive and negative directions, the incomplete gear 23 rotates in the positive and negative directions to drive the driven gear 27 to rotate in the positive and negative directions, and the driven gear 27 rotates to drive the driven disc 19 to rotate.

[0051] The rotating motor is fixedly installed on the upper support frame 1, and the output end of the rotating motor is fixedly connected with the half gear 18.

[0052] When working, the rotating motor drives the half gear 18 to rotate.

[0053] In the application, the support block rotates from the horizontal state to the vertical state, so that the upper feeding baffles of the limiting material units are horizontal to each other, so that the river crabs pass between the limiting material units, and then the support block rotates to the horizontal state again, so that the upper feeding baffles of the limiting material units are unfolded to the two sides, the passage between the limiting material units is blocked by the upper feeding baffles to limit the subsequent river crabs to pass through the limiting material units, so that only a single river crab passes through the limiting material units each time, so that the river crabs enter the sorting piece uniformly and quantitatively, the trouble of manually assisting the river crabs to feed is avoided, a plurality of single river crabs can enter the sorting piece accurately at the same time, and the sorting efficiency is improved.

[0054] The application has the characteristics of high efficiency, precision, automation and intelligence, can effectively improve the production efficiency, reduce the manual intervention, reduce the equipment failure rate, and has high application prospect and popularization value.

Claims

1. A sorting machine for intelligent selection of river crabs, comprising an upper support frame (1) and a feeding frame (2), characterized in that: The unloading rack (2) and the upper support rack (1) are arranged in a front-to-back manner, and the upper support rack (1) and the unloading rack (2) are connected by connecting rods on both sides; a sorting component (3) is provided above the unloading rack (2), and the sorting component (3) can slide on the unloading rack (2); a feeding belt (5) is fixedly installed on the upper support rack (1), the upper surface of the feeding belt (5) is flush with the upper surface of the sorting component (3), and can drive the crab to move towards the sorting component (3); a limiting unit is provided on the side of the upper surface of the feeding belt (5) close to the sorting component (3); The limiting units are multiple sets and evenly distributed on the feeding belt (5). Each set of limiting units consists of two adjacent feeding baffles (13). The feeding baffles (13) are rotatably connected to the feeding belt (5) by a torsion spring. The feeding baffles (13) of the limiting unit can automatically open and close as the sorting component (3) slides. In the natural state, the two sets of adjacent feeding baffles (13) in the limiting unit are parallel to each other. At this time, a single crab is allowed to pass between adjacent limiting units. A support block (14) is rotatably connected between the two sets of feeding baffles (13) of the limiting unit. The support block (14) is provided in two states: horizontal and vertical. When the support block (14) is in the horizontal state, the two sets of feeding baffles (13) of the limiting unit can be spread to both sides. When the support block (14) is in the vertical state, the two sets of feeding baffles (13) of the limiting unit can be parallel to each other. A transmission component is provided between the support block (14) and the sorting component (3). The transmission component can drive the support block (14) to rotate while driving the sorting component (3) to slide. The sorting component (3) has a movable groove (4), and a middle shaft (9) is rotatably installed in the middle position of the movable groove (4). Sorting plates (10) are symmetrically installed on both sides of the middle shaft (9). Multiple sorting holes (12) are evenly arranged on the sorting plate (10). The sorting holes (12) are all located between the limiting units. A limiting partition (11) is fixedly installed on one side of each sorting plate (10). The limiting partitions (11) on the two sets of sorting plates (10) are arranged on opposite sides. The limiting partitions (11) are arranged on both sides of the sorting holes (12). The limiting partitions (11) divide the sorting plate (10) into multiple uniform sorting bins. Each sorting bin has a weighing sensor at the bottom and a sorting hole (12). The feeding rack (2) is provided with a preferred feeding component (201) and a defective feeding component (202). The preferred feeding component (201) can transport qualified crabs downward to the processing line of qualified crabs, and the defective feeding component (202) can transport defective crabs downward to the processing line of defective crabs. The rotation of the intermediate shaft (9) drives the sorting plate (10) to rotate. When the crab falls onto the sorting plate (10), the sorting plate (10) on this side is above the defective unloading part (202). The unqualified crab falls onto the defective unloading part (202) through the sorting hole (12). After screening, the transmission component drives the intermediate shaft (9) to rotate. The sorting plate (10) carrying the crab rotates to the top of the preferred unloading part (201). The crab on the sorting plate (10) falls onto the preferred unloading part (201) under the action of gravity. The crab on the feeding belt (5) falls onto the sorting plate (10) on the side close to the feeding belt (5) through the limiting unit.

2. The intelligent sorting machine for selecting river crabs according to claim 1, characterized in that: The transmission assembly includes a half gear (18), an inclined frustum (8), and a toothed plate (7). The toothed plate (7) is slidably connected to the upper support frame (1) and its lower surface is attached to the upper surface of the feeding baffle (13). The toothed plate (7) can restrict the crabs transported by the feeding belt (5) from moving from the upper part of the feeding baffle (13) towards the sorting component (3). Mounting rods (16) are fixedly installed on each of the support blocks (14). A limiting gear (15) is fixedly installed at the upper end of the mounting rod (16). The limiting gear (15) meshes with the toothed plate (7).

3. The intelligent sorting machine for selecting river crabs according to claim 2, characterized in that: The half gear (18) is rotatably mounted on one side of the upper support frame (1), and a sorting gear (17) is fixedly mounted on one end of the intermediate shaft (9). An oscillating gear (20) is rotatably mounted on the upper end of the upper support frame (1). Both the oscillating gear (20) and the sorting gear (17) can mesh with the teeth of the half gear (18).

4. A sorting machine for intelligent selection of river crabs according to claim 3, characterized in that: A connecting frame (6) is fixedly installed at the lower end of the inclined frustum (8). One side of the lower end of the connecting frame (6) is slidably connected to the upper support frame (1), and the other side is fixedly connected to the sorting component (3). The side of the inclined frustum (8) near the upper support frame (1) is an inclined surface and a curved groove (25) is provided on it. A traction rod (22) is provided in the curved groove (25). A driven plate (19) is fixedly installed at the other end of the traction rod (22). A driven gear (27) is fixedly installed on the driven plate (19). The driven gear (27) is rotatably connected to the upper support frame (1). The connecting frame (6) is fixedly connected to one end of the toothed plate (7).

5. A sorting machine for intelligent selection of river crabs according to claim 4, characterized in that: An mounting shaft (26) is rotatably mounted on the upper support frame (1) at a position corresponding to the driven gear (27) and the oscillating gear (20). A limiting member (24) is fixedly mounted on the mounting shaft (26). An incomplete gear (23) is fixedly mounted on one end of the limiting member (24) near the driven gear (27). The incomplete gear (23) meshes with the driven gear (27). An embedding rod is provided on the edge of the driving disc (21). The embedding rod can be embedded into the limiting member (24).

6. A sorting machine for intelligent selection of river crabs according to claim 5, characterized in that: A rotating motor is fixedly installed on the upper support frame (1), and the output end of the rotating motor is fixedly connected to the half gear (18).

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