Cucumber quality grading and sorting conveyor and method of use

Abstract

The application provides a cucumber quality grading, sorting and conveying device and method, which comprises the following steps: a multi-groove bearing tray with cucumbers placed on the top is driven by a chain rod conveying mechanism to reach a strip belt conveying mechanism, the gap between the multiple arc-shaped grooves of the multi-groove bearing tray is greater than the strip conveying belt branch, the multi-groove bearing tray and the strip belt conveying mechanism are overlapped with each other, and the cucumbers on the top of the multi-groove bearing tray are higher than the strip conveying belt branch; the cucumbers on the top of the multi-groove bearing tray are continuously reduced in distance from the strip conveying belt branch under the driving of the downward inclined chain rod conveying mechanism, until the bottom of the cucumber is in contact with the strip conveying belt branch, the cucumber is transferred from the multi-groove bearing tray to the strip belt conveying mechanism, and meanwhile, the multi-groove bearing tray continues to descend under the driving of the downward inclined chain rod conveying mechanism until the arc-shaped grooves and the strip conveying belt branch are separated from each other.

Description

Technical Field

[0001] This invention relates to the field of fruit and vegetable grading and sorting, and particularly to a cucumber quality grading and sorting conveying device and its usage method. Background Technology

[0002] Currently, cucumber production suffers from low mechanization and an incomplete equipment system. Manual labor accounts for over 60% of the work in harvesting, post-harvest sorting, and processing, resulting in high labor costs and low sorting efficiency. The failure to grade cucumbers according to appropriate standards after large-scale harvesting hinders the achievement of maximum economic benefits and restricts the sustainable production of the cucumber industry. Achieving rapid quality control and intelligent grading of cucumbers based on their external characteristics can significantly reduce the workload of workers, substantially increase the added value of agricultural products, and improve agricultural production efficiency and quality. Cucumbers are typical long, irregularly shaped fruits and vegetables, presenting significant technical challenges during transport and separation. Existing fruit and vegetable grading and sorting technologies are insufficient, resulting in poor grading effects. Large-scale grading and sorting equipment specifically designed for cucumbers has not yet appeared on the market.

[0003] Currently, only pallets and conveying / separating devices are available for grading round fruits and vegetables. These devices are only suitable for regularly shaped round fruits and vegetables, such as tomatoes, eggplants, apples, and citrus fruits. Therefore, the pallets are mostly designed as regular circles or squares. Cucumbers, however, are long and irregularly shaped fruits and vegetables, and round or square pallets cannot meet the basic requirements for their transport. There are currently no reports of technical solutions for dynamic transport and grading of long and irregularly shaped fruits and vegetables like cucumbers. Furthermore, existing round pallets often require manual operation or mechanical assistance such as flipping or push-pull mechanisms during the transport and separation process. This not only affects the efficiency of automatic grading and separation but also inevitably causes some mechanical damage to the fruits and vegetables, impacting their external quality.

[0004] In summary, the existing technology has the following technical problems:

[0005] 1. The support device is a key component for realizing the grading and sorting of fruits and vegetables. In the past, the support devices designed for regular fruits and vegetables had very limited applicability. They could only load and transport round fruits and vegetables, and were not suitable for irregular fruits and vegetables such as cucumbers.

[0006] 2. Dynamic transfer and separation after fruit and vegetable grading is one of the key steps in sorting and packaging. In the past, the separation of fruits and vegetables from the carrying tray required the use of mechanism flipping or mechanical driving force. Although this method can achieve the purpose of separation, it is easy to cause mechanical damage to the fruits and vegetables, reducing the quality of the fruit and vegetable products.

[0007] Currently, there are no production lines or complete sets of equipment specifically designed for grading and sorting irregular fruits and vegetables like cucumbers, which severely limits the demand for large-scale, industrialized cucumber grading. Therefore, there is an urgent need to develop key devices and methods for large-scale post-harvest grading and sorting of cucumbers to address the market's shortcomings in rapid quality control and non-destructive sorting of cucumbers. Summary of the Invention

[0008] To address the problems of easy damage and low sorting efficiency of cucumbers during online quality grading and intelligent sorting, as well as during the transport and dynamic separation process, this invention, based on the needs and challenges of rapid quality grading and sorting of cucumbers, proposes a multi-groove support device and a dynamic transport and separation structure and implementation method suitable for grading and sorting irregularly shaped cucumbers. The invention mainly includes the following: a) a multi-groove support tray device suitable for dynamic transport in the grading and sorting of irregularly shaped cucumbers; b) a rapid and non-destructive separation structure and implementation method for the dynamic transport process of cucumber grading and sorting.

[0009] To address the shortcomings of existing technologies, this invention proposes a cucumber quality grading, sorting, and conveying device, characterized by comprising:

[0010] A multi-groove carrying tray (10) is used for loading and carrying cucumbers (9) as the conveying object on the production line. The top of the multi-groove carrying tray (10) is provided with multiple arc-shaped grooves for loading cucumbers (9), and the bottom of the multi-groove carrying tray (10) is provided with multiple inverted U-shaped grooves.

[0011] The chain rod transmission mechanism (34) is provided with a chain rod transmission support shaft (22) that cooperates with the inverted U-shaped groove at the bottom of the multi-groove support tray (10) to realize the movement and transmission of cucumbers in cooperation with the multi-groove support tray (10);

[0012] The strip conveyor mechanism (36) is provided with multiple strip conveyor branches that cooperate with multiple arc-shaped grooves of the multi-groove support tray (10), and the multiple strip conveyor branches are used to support cucumbers (9) and transfer and separate cucumbers (9) to the top of the multi-groove support tray (10); the strip conveyor mechanism (36) is located above the chain rod conveyor mechanism (37);

[0013] The chain link transmission mechanism (37) consists of three levels of transmission channels: an upper transmission channel, an inclined transmission channel, and a lower transmission channel. These three levels of transmission channels are connected without interruption. The inclined transmission channel facilitates the formation of a height difference, so that the height of the carrying pallet changes as the position of the chain link transmission support moves.

[0014] The cucumber quality grading and sorting conveying device includes a multi-groove support tray (10) with 7 support tray uprights (2). Each support tray upright (2) has an arc-shaped groove on its top. The 7 arc-shaped grooves include: a first arc-shaped groove (1), a second arc-shaped groove (3), a third arc-shaped groove (4), a fourth arc-shaped groove (5), a fifth arc-shaped groove (6), a sixth arc-shaped groove (7), and a seventh arc-shaped groove (8). The 7 support tray uprights form 6 longitudinal square grooves, including: a first longitudinal square groove (14), a second longitudinal square groove (15), a third longitudinal square groove (16), a fourth longitudinal square groove (17), a fifth longitudinal square groove (18), and a sixth longitudinal square groove (19).

[0015] The cucumber quality grading and sorting conveying device is described in which the arc-shaped grooves are all located above the multi-groove support tray upright plate (2) and are symmetrically distributed from left to right; the first arc-shaped groove (1) and the seventh arc-shaped groove (8) of the multi-groove support tray (10) have the same groove depth and groove width, the second arc-shaped groove (3) and the sixth arc-shaped groove (7) have the same groove depth and groove width, the third arc-shaped groove (4), the fourth arc-shaped groove (5) and the fifth arc-shaped groove (6) have the same groove depth and groove width, except that the third arc-shaped groove (4), the fourth arc-shaped groove (5) and the fifth arc-shaped groove (6) have the same groove width, the width of the arc-shaped grooves increases gradually from the middle of the multi-groove support tray to both sides.

[0016] The cucumber quality grading and sorting conveying device has the same spacing between the longitudinal square grooves; the bottom of the multi-groove carrying tray (10) has three inverted U-shaped grooves, namely the first inverted U-shaped groove (11), the second inverted U-shaped groove (12) and the third inverted U-shaped groove (13), and the direction of the inverted U-shaped grooves is perpendicular to the direction of the longitudinal square grooves.

[0017] The cucumber quality grading and sorting transmission device includes a chain rod transmission mechanism (37) with a chain rod transmission support shaft (22), chain rollers (38), inner chain plate (39), chain pin (40), and outer chain plate (41). A support frame (34) is installed below the chain rod transmission mechanism. The left and right sides of the chain rod transmission mechanism are respectively equipped with a left protective shell (20), a right protective shell (21), and an inclined protective shell (23).

[0018] The cucumber quality grading and sorting transmission device is described in which the chain rod transmission support shaft (22) is connected to the chain roller (38), the inner chain plate (39) and the outer chain plate (41) via the inner sleeve.

[0019] The chain transmission support shaft (22) of the chain transmission mechanism (37) is a hollow round bar made of stainless steel. The gaps between the chain transmission support shafts are the same. The chain transmission support shaft (22) cooperates with the first inverted U-shaped groove (11), the second inverted U-shaped groove (12) and the third inverted U-shaped groove (13) of the multi-groove bearing tray (10) and fixes the multi-groove bearing tray (10) above the chain transmission mechanism (37).

[0020] The cucumber quality grading and sorting conveyor device includes multiple strip conveyor belt branches of the strip conveyor mechanism (36): strip conveyor belt branch one (24), strip conveyor belt branch two (25), strip conveyor belt branch three (26), strip conveyor belt branch four (27), strip conveyor belt branch five (28), and strip conveyor belt branch six (29); and strip conveyor belt branch one (24), strip conveyor belt branch two (25), strip conveyor belt branch three (26), strip conveyor belt branch four (27), strip conveyor belt branch five (28), and strip conveyor belt branch six (29) are of the same size and are evenly distributed.

[0021] The cucumber quality grading and sorting conveying device is described in which the strip conveyor mechanism (36) and the chain rod conveyor mechanism (37) are kept in parallel, and the height of the strip conveyor mechanism (36) is higher than the lower conveying channel, the inclined conveying channel and the upper conveying channel of the chain rod conveyor mechanism (37), and the height of the strip conveyor mechanism (36) from the lower conveying channel is higher than the height of the strip conveyor mechanism (36) from the upper conveying channel;

[0022] The width of each strip conveyor branch is less than the width of the longitudinal square groove of the multi-groove support tray (10).

[0023] The cucumber quality grading and sorting transmission device is described in which the chain rod transmission mechanism (37) and the strip conveyor belt mechanism (36) are both controlled by an external PLC and frequency converter to control their transmission speeds separately. During the transmission control process, the transmission speed of the strip conveyor mechanism (37) is less than or equal to the transmission speed of the chain rod transmission mechanism (36).

[0024] The present invention also proposes a method of using any of the cucumber quality grading and sorting transmission devices, including:

[0025] Step 1: The multi-slot pallet (10) with cucumbers (9) on top is driven by the chain rod transmission mechanism (34) to the strip conveyor mechanism (36). The gap between the multiple arc-shaped slots of the multi-slot pallet (10) is larger than the branch of the strip conveyor belt. The multi-slot pallet (10) and the strip conveyor mechanism (36) overlap each other. The cucumbers (9) on the top of the multi-slot pallet (10) are higher than the branch of the strip conveyor belt.

[0026] Step 2: Under the influence of the inclined channel of the chain rod transmission mechanism (34), the distance between the cucumber (9) at the top of the multi-groove support tray (10) and the branch of the strip conveyor belt continues to decrease until the bottom of the cucumber (9) contacts the branch of the strip conveyor belt, transferring the cucumber (9) from the multi-groove support tray (10) to the strip conveyor mechanism (36). At the same time, the multi-groove support tray (10) continues to descend under the influence of the inclined channel of the chain rod transmission mechanism (34) until the arc groove separates from the branch of the strip conveyor belt.

[0027] As can be seen from the above solutions, the advantages of the present invention are:

[0028] This invention presents a crucial device and technical method for achieving target transport and dynamic separation in the large-scale grading and sorting of cucumbers. It addresses the problems of complex, inefficient, and damaging transport and dynamic separation technologies in cucumber production lines after grading. The invention designs a biomimetic support tray with a multi-groove structure, conforming to the irregular appearance of cucumbers and other fruits and vegetables, enabling lossless separation and transport during high-speed movement. This invention proposes a dynamic transport and separation method for cucumbers that combines a chain-link transport mechanism and a strip-shaped conveyor mechanism. By setting transport mechanisms at different heights and speeds, cucumbers achieve natural separation during dynamic transport through unassisted pushing, pulling, and flipping, significantly improving transport and separation efficiency while reducing mechanical damage to cucumbers caused by friction or external forces. The device and method designed in this invention have excellent application potential and prospects for widespread application in the large-scale grading and sorting of cucumbers after harvest. Attached Figure Description

[0029] Figure 1 Schematic diagram of the irregular multi-groove support and cucumber loading method of the present invention;

[0030] Figure 2 Overall schematic diagram of the cucumber transport and dynamic separation device of the present invention;

[0031] Figure 3 Schematic diagram of the link transmission mechanism of the present invention:

[0032] Figure 4 The present invention provides a flowchart of the dynamic transport and separation process for cucumbers.

[0033] In the diagram, 1. First arc-shaped groove of the multi-groove pallet; 2. Upright plate of the multi-groove pallet; 3. Second arc-shaped groove of the multi-groove pallet; 4. Third arc-shaped groove of the multi-groove pallet; 5. Fourth arc-shaped groove of the multi-groove pallet; 6. Fifth arc-shaped groove of the multi-groove pallet; 7. Sixth arc-shaped groove of the multi-groove pallet; 8. Seventh arc-shaped groove of the multi-groove pallet; 9. Cucumber; 10. Multi-groove pallet; 11. First inverted U-shaped groove of the multi-groove pallet; 12. Second inverted U-shaped groove of the multi-groove pallet; 13. Third inverted U-shaped groove of the multi-groove pallet; 14. First longitudinal square groove of the multi-groove pallet; 15. Second longitudinal square groove of the multi-groove pallet; 16. Third longitudinal square groove of the multi-groove pallet; 17. Fourth longitudinal square groove of the multi-groove pallet; 18. Fifth longitudinal square groove of the multi-groove pallet; 19. Sixth longitudinal square groove of the multi-groove pallet. 20. Square channel; 21. Upper left protective shell of the chain rod transmission mechanism; 22. Upper right protective shell of the chain rod transmission mechanism; 23. Chain rod transmission support shaft; 24. Right inclined protective shell of the chain rod transmission mechanism; 25. Branch 1 of the strip conveyor belt; 26. Branch 2 of the strip conveyor belt; 27. Branch 3 of the strip conveyor belt; 28. Branch 5 of the strip conveyor belt; 29. ​​Branch 6 of the strip conveyor belt; 30. Strip conveyor belt motor; 31. Motor drive shaft; 32. Lower left protective shell of the chain rod transmission device; 33. Left inclined protective shell of the chain rod transmission device; 34. Chain rod transmission mechanism support frame; 35. Strip conveyor belt support frame; 36. Strip belt transmission mechanism; 37. Chain rod transmission mechanism; 38. Chain roller; 39. Inner chain plate; 40. Pin shaft; 41. Outer chain plate. Detailed Implementation

[0034] To address the shortcomings of existing technologies, this invention proposes a device and method for cucumber transport and dynamic separation using a multi-groove support tray and a conveying mechanism. The multi-groove support tray is designed as a combination of multi-curved grooves and longitudinal square grooves. Based on biomimetic principles, the designed multi-curved grooves adapt to the irregular shape of cucumbers, effectively ensuring stable transport of cucumbers by the tray. The conveying mechanism consists of a chain-link transmission mechanism at the upper level and a strip conveyor belt mechanism at the lower level. The chain-link transmission mechanism features smooth operation and can achieve long-distance, variable-height transport. The support chain of the chain-link conveyor belt cooperates with the U-shaped groove at the bottom of the multi-groove support tray to transport the support tray and cucumbers. The structure of the strip conveyor belt adapts to the longitudinal square grooves of the cucumber support device. When the chain-link transmission mechanism and the strip conveyor belt mechanism operate in the same direction, multiple branches of the strip conveyor belt insert into multiple longitudinal square grooves of the tray to lift the cucumbers. The tray separates from the cucumbers under the action of opposing movements and height differences. This invention can minimize mechanical damage (damage) to cucumbers during high-speed transport after grading and sorting, improve the dynamic separation efficiency of cucumbers during high-speed transport after grading and sorting, and effectively solve the problems of poor motion characteristics and low efficiency of quality detection grading and sorting in the grading and sorting of irregular fruits and vegetables.

[0035] To make the above features and effects of the present invention clearer and easier to understand, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings.

[0036] To achieve the above effects, the technical solution adopted by the present invention is: a cucumber quality grading and sorting transmission device and a dynamic separation method, including a multi-groove carrying tray, a chain rod transmission mechanism and a strip conveyor belt mechanism, wherein the multi-groove carrying tray is used for loading and carrying the graded cucumbers;

[0037] The chain link transmission mechanism is used for arranging and transporting carrying pallets. The upper transmission channel of the chain link transmission mechanism is located at the front end of the strip conveyor belt to arrange and transport carrying pallets containing cucumbers. The inclined transmission channel and the lower transmission channel of the chain link transmission mechanism are located below the strip conveyor belt to arrange and transport empty pallets.

[0038] The strip conveyor belt is used to arrange and transport graded cucumbers. The strip conveyor belt mechanism is located above the chain link conveyor mechanism. When the cucumber carrying tray moves in the upper conveyor channel of the chain link conveyor mechanism, the lower layer of the strip conveyor belt is higher than the bottom of the longitudinal square groove of the carrying tray, and the upper layer of the strip conveyor belt is lower than the bottom of any arc groove on the carrying tray.

[0039] As a preferred embodiment of the present invention, the multi-groove support tray has structural types such as arc-shaped grooves, longitudinal square grooves, and bottom inverted U-shaped grooves. The arc-shaped grooves are located above the support tray uprights, and from left to right are the first arc-shaped groove, the second arc-shaped groove, the third arc-shaped groove, the fourth arc-shaped groove, the fifth arc-shaped groove, the sixth arc-shaped groove, and the seventh arc-shaped groove. Among them, the first arc-shaped groove and the seventh arc-shaped groove have the largest groove width, followed by the second arc-shaped groove and the sixth arc-shaped groove, and the third arc-shaped groove, the fourth arc-shaped groove, and the fifth arc-shaped groove have the smallest width. The purpose of this is to adapt to the irregular shape of cucumbers and ensure stability during the support process.

[0040] As a preferred embodiment of the present invention, the arc-shaped groove and the bottom inverted U-shaped groove of the multi-groove support tray are perpendicular to each other with the longitudinal square groove, the arc-shaped groove is closer to the front side of the tray upright, and the groove spacing of the support tray is equal.

[0041] As a preferred embodiment of the present invention, the second, third, fourth, fifth, and sixth arc-shaped grooves of the multi-groove support tray are slightly lower in depth than the first and seventh arc-shaped grooves, and the distance formed by the second, third, fourth, fifth, and sixth arc-shaped grooves is slightly longer than the length of the cucumber, so as to ensure that the cucumber is entirely within the second to sixth arc-shaped grooves when loaded and will not slip out.

[0042] As a preferred embodiment of the present invention, the supporting tray is made of thermoplastic polyurethane (TPU) elastomer rubber. TPU material is environmentally friendly and pollution-free, has good recyclability, will not cause damage to fruits and vegetables such as cucumbers, and has good wear resistance, impact resistance and shock absorption.

[0043] As a preferred embodiment of the present invention, the chain rod transmission mechanism is provided with thickened protective shells on both sides, which can not only fix the chain, chain rod, etc., but also protect personal safety and ensure the safe operation of the transmission mechanism.

[0044] In a preferred embodiment of the present invention, the chain link transmission mechanism employs a combination of chains and chain link shafts. The chains are circular stainless steel rods, and multiple transmission shafts are arranged in a dense chain network structure. The distance between the chain link shafts is equal, and the distance between them is equal to the distance between the inverted U-shaped grooves below the carrying tray. The two work together to realize the movement of the carrying tray. When the carrying tray moves in the upper transmission channel of the chain link transmission mechanism, the U-shaped groove of the carrying tray is slightly higher than the strip conveyor belt, and at this time the cucumber is also just above the strip conveyor belt.

[0045] In a preferred embodiment of the present invention, the inclination angle of the inclined channel of the chain link transmission mechanism can be set between 20° and 45° according to different transmission speed requirements. When the carrying pallet moves to the inclined channel with the chain link transmission mechanism, the carrying pallet can move smoothly downwards along the chain link support shaft. The cucumbers move with the strip conveyor belt without contacting the carrying pallet, thus achieving separation of the cucumber tray. When the carrying pallet moves in the lower channel of the chain link transmission mechanism, the carrying pallet is completely lowered by the strip conveyor belt without contact, moves with the chain link transmission mechanism, and reaches the pallet recycling point.

[0046] As a preferred embodiment of the present invention, the number of branches of the strip conveyor belt is set to 5, the spacing between each branch is equal, and the width of the strip conveyor belt is slightly smaller than the width of the longitudinal square groove of the carrying tray, so as to facilitate the strip conveyor belt to enter the longitudinal square groove of the carrying tray and lift up the cucumbers, thereby realizing the separation of the cucumber tray.

[0047] As a preferred embodiment of the present invention, the strip conveyor belt is made of silicone, which has excellent electrical insulation properties, aging resistance, chemical stability, and oxidation and weather resistance. Because silicone is soft, it will not cause frictional mechanical damage to the cucumber, thus ensuring the quality of the cucumber.

[0048] As a preferred embodiment of the present invention, both the chain link transmission mechanism and the strip conveyor belt mechanism are individually controlled by an external PLC and frequency converter to control their transmission speeds. During the transmission control process, the maximum transmission speed of the strip conveyor belt does not exceed the transmission speed of the chain link transmission mechanism.

[0049] This invention provides a cucumber quality grading, sorting, and conveying device and a dynamic separation method. The structure and implementation process of the device are as follows: Figures 1-4 As shown, the specific implementation process includes the following:

[0050] After cucumbers are graded using non-destructive methods such as visual inspection, they are then... Figure 1 The irregularly shaped multi-groove support tray shown carries cucumbers and moves them on a chain-link transmission mechanism. The strip conveyor belt rotates in the same direction, but its speed is slightly lower than that of the chain-link transmission mechanism, so as to separate the graded cucumbers from the support device and allow them to enter the subsequent processing stage.

[0051] When the multi-groove pallet reaches the position of the strip conveyor belt, the belt enters through the longitudinal square grooves of the pallet, and the cucumbers come into contact with it. The pallet gradually tilts downwards. With further movement, because the speed of the chain conveyor mechanism exceeds that of the strip conveyor belt, the cucumbers and pallet completely separate. The cucumbers then continue moving with the strip conveyor belt until the subsequent packaging process, at which point the pallet is recycled back in the lower conveyor channel of the chain conveyor mechanism. This achieves the dynamic separation and transfer of cucumbers after grading.

[0052] In summary, this invention proposes a multi-groove support tray suitable for long, irregularly shaped fruits and vegetables. The arc-shaped grooves, designed based on biomimetic principles, are adapted to the appearance of cucumbers. Its unique multi-groove structure and special materials greatly enhance the efficiency of cucumber transport and ensure cucumber quality. Employing a chain-link transmission mechanism and a strip conveyor belt with differential speed and unidirectional motion, the tray separates cucumbers during transport due to the inclined transmission channel and height difference, avoiding mechanical damage caused by external force-driven separation. This invention allows for adjustment of the relative position and speed of the transmission mechanism according to different cucumber varieties, fulfilling the key device and technical requirements for large-scale grading and sorting of various cucumber varieties. The invention has a simple structure and low cost, making it suitable for widespread application in large-scale grading and sorting production lines.

Claims

1. A cucumber quality grading and sorting conveying device, characterized in that, include: The multi-groove carrying tray (10) is used for loading and carrying cucumbers (9) as the transfer object on the production line. The top of the multi-groove carrying tray (10) is provided with multiple arc-shaped grooves for loading cucumbers (9), and the bottom of the multi-groove carrying tray (10) is provided with multiple inverted U-shaped grooves. The chain rod transmission mechanism (37) is provided with a chain rod transmission support shaft (22) that cooperates with the inverted U-shaped groove at the bottom of the multi-groove support tray (10) to realize the movement and transmission of cucumbers in cooperation with the multi-groove support tray (10); The strip conveyor mechanism (36) is provided with multiple strip conveyor branches that cooperate with multiple arc-shaped grooves of the multi-groove support tray (10), and the multiple strip conveyor branches are used to support cucumbers (9) and transfer and separate cucumbers (9) to the top of the multi-groove support tray (10); the strip conveyor mechanism (36) is located above the chain rod conveyor mechanism (37); The chain link transmission mechanism (37) consists of three levels of transmission channels: an upper transmission channel, an inclined transmission channel, and a lower transmission channel. These three levels of transmission channels are connected without interruption. The inclined transmission channel facilitates the formation of a height difference, so that the height of the carrying pallet changes as the position of the chain link transmission support moves.

2. The cucumber quality grading, sorting, and conveying device as described in claim 1, characterized in that, The multi-groove pallet (10) is provided with 7 pallet uprights (2), each pallet upright (2) having an arc-shaped groove on its top. The 7 arc-shaped grooves include: a first arc-shaped groove (1), a second arc-shaped groove (3), a third arc-shaped groove (4), a fourth arc-shaped groove (5), a fifth arc-shaped groove (6), a sixth arc-shaped groove (7), and a seventh arc-shaped groove (8); and the 7 pallet uprights form 6 longitudinal square grooves including: a first longitudinal square groove (14), a second longitudinal square groove (15), a third longitudinal square groove (16), a fourth longitudinal square groove (17), a fifth longitudinal square groove (18), and a sixth longitudinal square groove (19).

3. The cucumber quality grading, sorting, and conveying device as described in claim 2, characterized in that, The arc-shaped grooves are all located above the multi-groove support pallet upright (2) and are symmetrically distributed from left to right. The first arc-shaped groove (1) and the seventh arc-shaped groove (8) of the multi-groove support pallet (10) have the same groove depth and groove width, the second arc-shaped groove (3) and the sixth arc-shaped groove (7) have the same groove depth and groove width, the third arc-shaped groove (4), the fourth arc-shaped groove (5) and the fifth arc-shaped groove (6) have the same groove depth and groove width. Except for the third arc-shaped groove (4), the fourth arc-shaped groove (5) and the fifth arc-shaped groove (6) have the same groove width, the width of the arc-shaped grooves increases from the middle of the multi-groove support pallet to both sides.

4. The cucumber quality grading, sorting, and conveying device as described in claim 2, characterized in that, The spacing between the longitudinal square grooves is the same; the bottom of the multi-groove carrying tray (10) has three inverted U-shaped grooves, namely the first inverted U-shaped groove (11), the second inverted U-shaped groove (12) and the third inverted U-shaped groove (13), and the direction of the inverted U-shaped grooves is perpendicular to the direction of the longitudinal square grooves.

5. The cucumber quality grading, sorting, and conveying device as described in claim 1, characterized in that, The chain link transmission mechanism (37) is provided with a chain link transmission support shaft (22), chain rollers (38), inner chain plate (39), chain pin (40), and outer chain plate (41). A support frame (34) is installed below the chain link transmission mechanism. The left and right sides of the chain link transmission mechanism are respectively equipped with a left protective shell (20), a right protective shell (21), and an inclined protective shell (23).

6. The cucumber quality grading, sorting, and conveying device as described in claim 5, characterized in that, The chain rod transmission support shaft (22) is connected to the chain roller (38), the inner chain plate (39) and the outer chain plate (41) via the inner sleeve; The chain transmission support shaft (22) of the chain transmission mechanism (37) is a hollow round bar made of stainless steel. The gaps between the chain transmission support shafts are the same. The chain transmission support shaft (22) cooperates with the first inverted U-shaped groove (11), the second inverted U-shaped groove (12) and the third inverted U-shaped groove (13) of the multi-groove bearing tray (10) and fixes the multi-groove bearing tray (10) above the chain transmission mechanism (37).

7. The cucumber quality grading, sorting, and conveying device as described in claim 1, characterized in that, The multiple strip conveyor belt branches of the strip conveyor mechanism (36) include: strip conveyor belt branch one (24), strip conveyor belt branch two (25), strip conveyor belt branch three (26), strip conveyor belt branch four (27), strip conveyor belt branch five (28), and strip conveyor belt branch six (29); and strip conveyor belt branch one (24), strip conveyor belt branch two (25), strip conveyor belt branch three (26), strip conveyor belt branch four (27), strip conveyor belt branch five (28), and strip conveyor belt branch six (29) are of the same size and are evenly distributed.

8. The cucumber quality grading and sorting conveying device as described in claim 2 or 7, characterized in that, The strip conveyor mechanism (36) and the chain rod conveyor mechanism (37) are kept parallel to each other, and the height of the strip conveyor mechanism (36) is higher than the lower conveyor channel, the inclined conveyor channel and the upper conveyor channel of the chain rod conveyor mechanism (37), and the height of the strip conveyor mechanism (36) from the lower conveyor channel is higher than the height of the strip conveyor mechanism (36) from the upper conveyor channel; The width of each strip conveyor branch is less than the width of the longitudinal square groove of the multi-groove carrying tray (10).

9. The cucumber quality grading, sorting, and conveying device as described in claim 1, characterized in that, Both the chain link transmission mechanism (37) and the strip belt transmission mechanism (36) have their transmission speeds controlled separately by an external PLC and frequency converter. During the transmission control process, the transmission speed of the strip belt transmission mechanism (36) is less than or equal to the transmission speed of the chain link transmission mechanism (37).

10. A method of using the cucumber quality grading and sorting conveying device as described in any one of claims 1 to 9, characterized in that, include: Step 1: The multi-slot pallet (10) with cucumbers (9) on top is driven by the chain rod transmission mechanism (37) to the strip conveyor mechanism (36). The gap between the multiple arc-shaped slots of the multi-slot pallet (10) is larger than the branch of the strip conveyor belt. The multi-slot pallet (10) and the strip conveyor mechanism (36) overlap each other. The cucumbers (9) on the top of the multi-slot pallet (10) are higher than the branch of the strip conveyor belt. Step 2: Under the influence of the inclined channel of the chain rod transmission mechanism (37), the distance between the cucumber (9) at the top of the multi-groove carrying tray (10) and the branch of the strip conveyor belt continues to decrease until the bottom of the cucumber (9) contacts the branch of the strip conveyor belt, transferring the cucumber (9) from the multi-groove carrying tray (10) to the strip conveyor mechanism (36). At the same time, the multi-groove carrying tray (10) continues to descend under the influence of the inclined channel of the chain rod transmission mechanism (37) until the arc groove and the branch of the strip conveyor belt separate from each other.

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