A crayfish primary processing device
By coordinating the rotary indexing module driven by the Geneva mechanism with the cutting module and the tail clamping module, the initial processing of crayfish is fully automated, solving the problems of low efficiency and complex equipment in the existing technology, and improving processing efficiency and quality consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING FORESTRY UNIVERSITY
- Filing Date
- 2026-05-21
- Publication Date
- 2026-06-19
Smart Images

Figure CN122229071A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a crayfish primary processing device, specifically a fully automatic crayfish primary processing device that utilizes a grooved wheel mechanism to drive four rotary indexing modules to work in multiple positions, and through the radial movement of the rotary indexing modules, works in conjunction with a cutting module, a tail clamping module, and a sweeping rod to complete the removal of the head and tail. Background Technology
[0002] Current crayfish primary processing relies mainly on manual labor, which is inefficient, labor-intensive, and struggles to guarantee consistency and hygiene. Existing mechanical processing equipment is generally single-function, lacking synchronous continuous processing mechanisms. Material transfer between workstations requires manual intervention or additional conveying, resulting in inconsistent cycle times, easy damage to the crayfish meat, and complex equipment structures that are difficult to maintain. Therefore, there is an urgent need for a crayfish primary processing device that can achieve full automation of head removal, tail removal, and devein removal, synchronous coordination of multiple workstations, and stable processing quality. This invention, in the field of automated food processing technology, innovatively proposes a crayfish primary processing device. This device uses a stepped-drive rotary indexing module via a grooved wheel mechanism. The rotary indexing module moves radially, coordinating with the cutting module to complete head cutting, with the tail clamping module to complete tail separation, and with the sweeping rod to complete finished product unloading and collection, achieving fully automated operation. Summary of the Invention
[0003] The technical problem to be solved by this invention is that, generally speaking, manual processing of crayfish is inefficient, mechanical processing lacks synchronous and continuous processing mechanisms, and the equipment is complex.
[0004] The technical solution of the present invention: A crayfish primary processing device, characterized in that it includes: first to fourth rotary indexing modules, a grooved wheel, a cutting module, a tail clamping module, and a sweeping rod; The indexing groove of the grooved wheel is provided with connecting holes, which are respectively connected to the drive device; The first indexing moving platform in the first rotary indexing module is provided with a connection hole for connection to the drive device and is located above the Geneva wheel; The second indexing moving platform in the second rotary indexing module is provided with a connection hole for connection to the drive device and is located above the Geneva wheel; The third indexing moving platform in the third rotary indexing module is provided with a connection hole for connection to the drive device and is located above the Geneva wheel; The fourth indexing module has a connecting hole for connecting to the drive device and is located above the Geneva wheel. The indexing plate has four radial grooves along its circumference. When the cylindrical pin on the end face of the grooved wheel rotates, the cylindrical pin enters the radial groove, causing the base to rotate 90°, and the rotary indexing modules rotate synchronously.
[0005] The crayfish primary processing device is characterized in that: the first rotary indexing module includes: a first indexing moving platform, a first single-sided clamp, and a first single-sided clamp. The first indexing moving platform is a fan-shaped disc structure with connecting holes for connection to the driving device, and connecting holes on its surface for connection to the first single-sided clamp. The first single-sided clamp is vertically fixed to the upper surface of the first indexing moving platform, and is provided with a connecting hole for connection to the first indexing moving platform, and the surface is connected to the first single-sided clamp. The first single-sided clamp engages with the first single-sided clamp frame via a connecting hole. Its arc-shaped pressing surface is in contact with the material, and its surface is in contact with the upper surface of the first indexing moving platform; The first to fourth rotary indexing modules have the same structure and size, and the drive device adopts screw transmission. The grooved wheel includes: a dial wheel and an indexing grooved plate; The dial wheel has a surface that fits against the indexing groove surface, and a cylindrical pin surface that fits against the indexing groove surface; The indexing slot plate has four radial slots on its lower side along the circumference, which are identical in structure and size; the upper side has four motor mounts arranged in a circumferential array, which are identical in structure and size, and have connecting holes for connection with the drive device. The cutting module includes: a first cutting edge, a first connecting rod, a driven gear, a motor base, a driving gear, a rudder disk, a second connecting rod, and a second cutting edge; The first cutting edge is a disc-shaped cutting blade, which has a connecting hole and is connected to the first connecting rod and the driven gear respectively; The second cutting edge has the same structure and size as the first cutting edge, and is symmetrically distributed at the same horizontal height, performing bidirectional cutting; The first connecting rod is provided with a connecting hole and is respectively connected to the first cutting edge and the motor base; The second connecting rod has the same structure and dimensions as the first connecting rod; The driven gear (F3) adopts a sector gear structure, which includes a sector base. The center of the base has a connecting hole for connection with the motor base. The circumferential edge of the base is divided into a toothed area and a toothless area. The toothed area has teeth along the circumferential direction for meshing and transmission with the driving gear. The radial outer edge of the base has a connecting rod, and the end of the connecting rod has a connecting hole for connection with the first cutting edge. The motor base has an irregular frame structure and is provided with connection holes for connection to the drive device, driven gear, first cutting edge and second cutting edge respectively. The drive gear adopts a sector gear structure, which includes a sector base. The center of the base has a connecting hole for connection with the rudder disk. The surface mates with the rudder disk. The circumferential edge of the base is divided into a toothed area and a toothless area. The toothed area has teeth along the circumferential direction for meshing and transmission with the drive gear. A connecting rod is provided on the radial outer edge of the base. The end of the connecting rod has a connecting hole for connection with the second cutting edge. The steering wheel is provided with a connection hole for connection to the drive device; The tail clamping module includes a tail clamping platform, a single-sided clamping frame, and a single-sided clamp. The tail clamping platform is provided with a connecting hole for connection to a single-sided clamp. The single-sided clamp is vertically fixed to the upper surface of the tail clamping platform and is provided with a connecting hole to connect with the tail clamping platform; The single-sided clamp mates with the single-sided clamp frame via a connecting hole. Its surface is in contact with the upper surface of the tail clamping platform. The sweeping rod includes a connecting rod and a rectangular plate, and the whole has a flag-shaped structure. Attached Figure Description
[0006] Figure 1 3D diagram of a crayfish primary processing device Figure 2 First rotation indexing module Figure 3 3D diagram of the first indexing mobile platform Figure 4 3D diagram of the first single-sided clamp Figure 5 First unilateral clamp 3D diagram Figure 6 Geneva module Figure 7 3D diagram of the dial Figure 8 3D diagram of indexing groove plate Figure 9 Cutting module diagram Figure 10 Three-dimensional diagram of the first cutting edge Figure 11 3D diagram of the first connecting rod Figure 12 3D diagram of driven gear Figure 13 3D model of motor base Figure 14 3D diagram of the driving gear Figure 15 3D diagram of the steering wheel Figure 16 Tail clamping module diagram Figure 17 3D model of tail clamping platform Figure 18 3D model of a single-sided clamp Figure 19 3D diagram of a single-sided clamp Figure 20 3D model of sweeping bar Drawing number explanation A - First rotary indexing module, B - Second rotary indexing module, C - Third rotary indexing module, D - Fourth rotary indexing module, E - Wheel, F - Cutting module, G - Tail clamping module, H - Sweeping bar, A1 - First indexing moving platform, A2 - First single-sided clamp, A3 - First single-sided clamp, B1 - Second indexing moving platform, C1 - Third indexing moving platform, D1 - Fourth indexing moving platform, E1 - Dial wheel, E2 - Indexing slot, F1 - First cutting edge, F2 - First connecting rod, F3 - Driven gear, F4 - Motor mount, F5 - Drive gear, F6 - Steering wheel, F7 - Second connecting rod, F8 - Second cutting edge, G1 - Tail clamping platform, G2 - Single-sided clamp, G3 - Single-sided clamp, A1-1 - Connecting hole, A1-2 - Surface, A1-3 - Connecting hole, A2-1 - Connecting... Connecting hole, A2-2-face, A3-1-face, A3-2-connecting hole, A3-3-arc clamping surface, E1-1-face, E1-2-cylindrical pin surface, E2-1-face, E2-2-face, E2-3-connecting hole, F1-1-connecting hole, F1-2-connecting hole, F2-1-connecting hole, F2-2-connecting hole, F3-1-connecting hole, F3-2-connecting hole, F4- 1-Connecting hole, F4-2-Connecting hole, F4-3-Connecting hole, F4-4-Connecting hole, F5-1-Connecting hole, F5-2-Connecting hole, F5-3-Face, F5-4-Connecting hole, F6-1-Connecting hole, F6-2-Connecting hole, G1-1-Connecting hole, G1-2-Upper surface, G2-1-Connecting hole, G2-2-Face, G3-1-Face, G3-2-Connecting hole. Detailed Implementation
[0007] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0008] Referring to the accompanying drawings, this invention designs a primary processing device for crayfish, such as... Figure 1 As shown, the feature includes: first to fourth rotary indexing modules, a grooved wheel, a cutting module, a tail clamping module, and a sweeping rod; The indexing groove of the grooved wheel is provided with connecting holes, which are respectively connected to the drive device; The first indexing moving platform in the first rotary indexing module is provided with a connection hole for connection to the drive device and is located above the Geneva wheel; The second indexing moving platform in the second rotary indexing module is provided with a connection hole for connection to the drive device and is located above the Geneva wheel; The third indexing moving platform in the third rotary indexing module is provided with a connection hole for connection to the drive device and is located above the Geneva wheel; The fourth indexing module has a connecting hole for connecting to the drive device and is located above the Geneva wheel. The indexing plate has four radial grooves along its circumference. When the cylindrical pin on the end face of the grooved wheel rotates, the cylindrical pin enters the radial groove, causing the base to rotate 90°, and the rotary indexing modules rotate synchronously.
[0009] like Figure 2 As shown, the crayfish primary processing device is characterized in that: the first rotary indexing module includes: a first indexing moving platform, a first single-sided clamp, and a first single-sided clamp; like Figure 3 As shown, the first indexing moving platform has a fan-shaped disc structure, with connecting holes for connection to the driving device, and connecting holes on the surface for connection to the first single-sided clamp. like Figure 4 As shown, the first single-sided clamp is vertically fixed to the upper surface of the first indexing moving platform, and is provided with a connecting hole for connection to the first indexing moving platform, and the surface is connected to the first single-sided clamp. like Figure 5 As shown, the first single-sided clamp engages with the first single-sided clamp frame via a connecting hole. Its arc-shaped pressing surface is in contact with the material, and its surface is in contact with the upper surface of the first indexing moving platform; The first to fourth rotary indexing modules have the same structure and size, and the drive device adopts screw transmission. like Figure 6 As shown, the grooved wheel includes: a dial wheel and an indexing groove plate; like Figure 7 As shown, the dial wheel has a surface that fits against the indexing slot surface, and a cylindrical pin surface that fits against the indexing slot surface; like Figure 8 As shown, the indexing slot plate has four radial slots on its lower side along the circumference, and their structure and size are exactly the same; the upper side has four motor mounts arranged in a circumferential array, and their structure and size are exactly the same, with connecting holes for connection to the drive device. like Figure 9 As shown, the cutting module includes: a first cutting edge, a first connecting rod, a driven gear, a motor base, a driving gear, a rudder disk, a second connecting rod, and a second cutting edge; like Figure 10 As shown, the first cutting edge is a disc-shaped cutting blade, which has a connecting hole and is connected to the first connecting rod and the driven gear respectively; The second cutting edge has the same structure and size as the first cutting edge, and is symmetrically distributed at the same horizontal height, performing bidirectional cutting; like Figure 11 As shown, the first connecting rod is provided with a connecting hole and is respectively connected to the first cutting edge and the motor base; The second connecting rod has the same structure and dimensions as the first connecting rod; like Figure 12 As shown, the driven gear (F3) adopts a sector gear structure, which includes a sector base. The center of the base is provided with a connecting hole for connection with the motor base. The circumferential edge of the base is divided into a toothed area and a toothless area. The toothed area is provided with teeth along the circumferential direction for meshing and transmission with the driving gear. A connecting rod is provided on the radial outer edge of the base. The end of the connecting rod is provided with a connecting hole for connection with the first cutting edge. like Figure 13 As shown, the motor base has an irregular frame structure and is provided with connection holes for connection with the drive device, driven gear, first cutting edge, and second cutting edge respectively; like Figure 14 As shown, the drive gear adopts a sector gear structure, which includes a sector base. The center of the base has a connecting hole for connection with the rudder disk. The surface mates with the rudder disk. The circumferential edge of the base is divided into a toothed area and a toothless area. The toothed area has teeth along the circumferential direction for meshing and transmission with the drive gear. A connecting rod is provided on the radial outer edge of the base. The end of the connecting rod has a connecting hole for connection with the second cutting edge. like Figure 15 As shown, the rudder disc is provided with a connection hole for connection to the drive device; like Figure 16 As shown, the tail clamping module includes a tail clamping platform, a single-sided clamp, and a single-sided clamp. like Figure 17 As shown, the tail clamping platform is provided with a connecting hole for connection with a single-sided clamp; like Figure 18 As shown, the single-sided clamp is vertically fixed to the upper surface of the tail clamping platform and is provided with a connecting hole for connection with the tail clamping platform; like Figure 19 As shown, the single-sided clamp mates with the single-sided clamp frame via a connecting hole. Its surface is in contact with the upper surface of the tail clamping platform. like Figure 20 As shown, the sweeping rod includes a connecting rod and a rectangular plate, and the whole has a flag-shaped structure.
[0010] The crayfish primary processing device has four processing stations: material loading and pre-tightening station, head cutting station, tail separation station, and finished product unloading and collection station. The material loading and pre-tightening station involves a single crayfish falling vertically onto the side of the indexing moving platform. A dial wheel in the grooved wheel mechanism drives the indexing groove plate to complete one indexing rotation. Subsequently, a single-sided arc-shaped clamping surface presses the crayfish's body against it. The head cutting station is characterized by the indexing slot plate driving the rotary indexing module to step 90°, the drive gear rotating, the first and second cutting edges cutting in opposite directions simultaneously, clamping the crayfish head, and at the same time the indexing moving platform moving radially backward to complete the crayfish head removal process. The tail separation station is a 90° stepping indexing module driven by an indexing slot plate, which clamps the tail of the crayfish on one side, and the indexing moving platform moves radially forward to complete the tail removal process of the crayfish. The finished product unloading and collection station is a 90° stepping indexing module driven by an indexing tray, and the sweeping bar pushes the finished crayfish off the platform.
Claims
1. A crayfish primary processing device, characterized in that... Includes: first to fourth rotary indexing modules (A, B, C, D), Geneva wheel (E), cutting module (F), tail clamping module (G), and sweeping bar (H); The indexing groove plate (E2) of the Geneva wheel (E) is provided with connecting holes, which are respectively connected to the drive device; The first indexing moving platform (A1) in the first rotary indexing module (A) is provided with a connecting hole (A1-1) for connection to the drive device and is located above the Geneva wheel (E); The second indexing moving platform (B1) in the second rotary indexing module (B) is provided with a connecting hole (B1-1) for connection to the drive device and is located above the Geneva wheel (E); The third indexing module (C) has a connecting hole (C1-1) for connecting to the drive device and is located above the Geneva wheel (E); The fourth indexing module (D) has a connecting hole (D1-1) for connecting to the drive device and is located above the Geneva wheel (E). The indexing groove plate (E2) has four radial grooves along its circumference. The cylindrical pin on the end face of the dial wheel (E1) of the groove wheel (E) rotates and enters the radial groove, causing the base plate (E2) to rotate 90°. The rotary indexing modules (A, B, C, D) rotate synchronously.
2. The crayfish primary processing device according to claim 1, characterized in that... The first rotary indexing module (A) includes: a first indexing moving platform (A1), a first single-sided clamp (A2), and a first single-sided clamp (A3); The first indexing moving platform (A1) has a fan-shaped disk structure, with a connecting hole (A1-1) for connection to the driving device, and a connecting hole (A1-3) on the surface (A1-2) for connection to the first single-sided clamp (A2). The first single-sided clamp (A2) is vertically fixed to the upper surface (A1-2) of the first indexing moving platform (A1), and is provided with a connecting hole (A2-1) for connecting to the first indexing moving platform (A1), and the surface (A2-2) is connected to the first single-sided clamp (A3). The first single-sided clamp (A3) is connected to the first single-sided clamp (A2) through the connecting hole (A3-2), and its arc-shaped pressing surface (A3-3) is in contact with the material, and its surface (A3-1) is in contact with the upper surface (A1-2) of the first indexing moving platform (A1); The first to fourth rotary indexing modules (A, B, C, D) have identical structures and dimensions, and the drive device uses a lead screw drive. The grooved wheel (E) includes: a dial wheel (E1) and an indexing grooved plate (E2); The dial wheel (E1) has a surface (E1-1) that fits against the surface (E2-1) of the indexing slot plate (E2), and a cylindrical pin surface (E1-2) that fits against the surface (E2-2) of the indexing slot plate (E2); The indexing slot plate (E2) has four radial slots on its lower side along the circumference, and its structure and size are exactly the same; the upper side has four motor mounts arranged in a circumferential array, and its structure and size are exactly the same, and it has connecting holes (E2-3) to connect with the drive device. The cutting module (F) includes: a first cutting edge (F1), a first connecting rod (F2), a driven gear (F3), a motor base (F4), a driving gear (F5), a rudder disk (F6), a second connecting rod (F7), and a second cutting edge (F8); The first cutting edge (F1) is a disc-shaped cutting insert, and is provided with connecting holes (F1-1) and (F1-2) to connect with the first connecting rod (F2) and the driven gear (F3) respectively; The second cutting edge (F8) has the same structure and size as the first cutting edge (F1), and is symmetrically distributed at the same horizontal height, performing bidirectional cutting; The first connecting rod (F2) is provided with connecting holes (F2-1) and (F2-2) to connect with the first cutting edge (F1) and the motor base (F4) respectively; The second connecting rod (F7) has the same structure and dimensions as the first connecting rod (F2); The driven gear (F3) adopts a sector gear structure, which includes a sector base. The center of the base is provided with a connecting hole (F3-1) to connect with the motor base (F4). The circumferential edge of the base is divided into a toothed area and a toothless area. The toothed area is provided with teeth along the circumferential direction, which mesh with the driving gear (F5) for transmission. A connecting rod is provided on the radial outer edge of the base. The end of the connecting rod is provided with a connecting hole (F3-2) to connect with the first cutting edge (F1). The motor mount (F4) has an irregular frame structure and is provided with connection holes (F4-1), (F4-2), (F4-3), and (F4-4) to connect with the drive device, driven gear (F3), first cutting edge (F1), and second cutting edge (F8) respectively. The drive gear (F5) adopts a sector gear structure, which includes a sector base. The center of the base has connecting holes (F5-1, 2) to connect with the rudder disk (F6), and the surface (F5-3) mates with the rudder disk (F6). The circumferential edge of the base is divided into a toothed area and a toothless area. The toothed area has teeth along the circumferential direction to mesh with the drive gear (F3) for transmission. A connecting rod is provided on the radial outer edge of the base, and the end of the connecting rod has a connecting hole (F5-2) to connect with the second cutting edge (F8). The rudder disc (F6) is provided with connection holes (F6-1, 2) for connection with the drive device; The tail clamping module (G) includes a tail clamping platform (G1), a single-sided clamp (G2), and a single-sided clamp (G3); The tail clamping platform (G1) is provided with a connecting hole (G1-1) for connection with a single-sided clamp (G3); The single-sided clamp (G2) is vertically fixed to the upper surface (G1-2) of the tail clamping platform (G1) and is provided with a connecting hole (G2-1) to connect with the tail clamping platform (G1); The single-sided clamp (G3) is engaged with the single-sided clamp bracket (G2) through the connecting hole (G3-2), and its surface (G3-1) is in contact with the upper surface (G1-2) of the tail clamping platform (G1); The sweeping rod (H) includes a connecting rod and a rectangular plate, and the whole has a flag-shaped structure.
3. The crayfish primary processing device according to claims 1 and 2, wherein the processing is divided into four stations: material loading and pre-tightening station, head cutting station, tail separation station, and finished product unloading and collection station; The material loading and pre-tightening station is where a single crayfish falls vertically onto the side of the indexing moving platform. The dial wheel (E1) in the groove wheel mechanism (E) drives the indexing groove plate (E2) to complete one indexing rotation. Subsequently, the single-sided arc-shaped clamping surface clamps the crayfish body. The head cutting station is characterized by the indexing slot plate (E2) driving the rotary indexing module to step 90°, the drive gear (F5) rotating, and the first and second cutting edges (F1, F8) cutting in opposite directions simultaneously to clamp the crayfish head. At the same time, the indexing moving platform moves radially backward to complete the crayfish head removal process. The tail separation station is where the indexing slot plate (E2) drives the rotary indexing module to step 90°, the single-sided clamp (G3) clamps the crayfish tail, and the indexing moving platform moves radially forward to complete the crayfish tail removal process. The finished product unloading and collection station is where the indexing tray (E2) drives the rotary indexing module to step 90°, and the sweeping rod (H) pushes the finished crayfish off the platform.