An automated leafy vegetable harvesting line

Abstract

The present invention discloses an automated leaf vegetable harvesting assembly line, comprising a conveying frame and a planting disk installed on the conveying frame and moving in a transverse direction, a cutting device is also installed on the conveying frame, the cutting device is provided with an annular belt knife, the annular belt knife is connected to a first power device driving the annular rotation thereof, a planting cup planted with leaf vegetables is placed on the planting disk, and the annular belt knife is used to cut and harvest the leaf vegetables when the planting cup moves below the cutting device, the cutting effect is good, damage to the leaf vegetables is avoided, and the cutting mouth is smooth; in addition, a pressure plate wheel pressed on the surface of the planting disk presses the planting disk onto a conveying belt until the entire cutting process is completed, so as to avoid sliding and jumping of the planting disk under the cutting force of the annular belt knife, thereby ensuring the stability during cutting; various mechanisms on the cutting device can also adjust the state of the annular belt knife to ensure the cutting effect, and the entire cutting process has a high degree of automation.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to an automated leaf vegetable harvesting line. Background Art

[0002] As the most advanced form of facility agriculture, plant factories use artificially built facilities to create relatively controllable microclimate conditions, so that cultivation and production can be carried out at any time and any place. At the same time, there is no invasion of pests and diseases during the entire cultivation process, so the products are purely green and pollution-free. The crops grow faster, and the utilization rate per unit of land can reach 40 to 108 times that of outdoor planting. Therefore, in recent years, plant factories have become one of the fastest-growing industries in facility agriculture.

[0003] Vegetables grown on planting plates are one of the main cultivation methods in plant factories at home and abroad. Because the planting holes on the planting plates have relatively standard positions, this is conducive to the mechanization and automation of agricultural planting. However, the growth of leafy vegetables is uneven, and the water content of hydroponic leafy vegetables is relatively high. The branches and leaves of leafy vegetables are tender and brittle and easy to break. Therefore, the harvesting process is still mainly completed manually, which is not only inefficient, but also the labor cost is constantly increasing.

[0004] To this end, a Chinese patent with publication number CN107135736A discloses a harvesting device for vegetables cultivated on a planting plate, including a planting plate conveying mechanism, a rice-supporting mechanism, a root-guiding mechanism, a rice-pushing mechanism, a cutting mechanism, a vegetable conveying mechanism, a root-removing mechanism, a frame and a control system. The vegetables are transported to a designated position by the planting plate conveying mechanism, and the vegetable leaves are lifted up and the roots are transported to a cutting position under the action of the rice-supporting mechanism and the root-guiding mechanism. Then, the roots are cut under the action of the rice-pushing mechanism and the cutting mechanism. The cutting, harvesting and root processing of the vegetables on the planting plate can be completed at one time, and the degree of automation is high. However, the cutting method adopted is to use a flat blade to move back and forth horizontally for cutting, and the cutting speed is slow, the cutting effect is poor, it is easy to damage the leafy vegetables, the cutting mouth is uneven, and the structure is complex, there are many parts, and the manufacturing cost is high.

[0005] Therefore, those skilled in the art are committed to developing an automated leafy vegetable harvesting line with good cutting effect. Summary of the invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an automated leafy vegetable harvesting line with good cutting effect.

[0007] To achieve the above-mentioned objectives, the present invention provides an automated leafy vegetable harvesting line, comprising a conveyor frame and a planting disk installed on the conveyor frame and moving in a transverse direction, a cutting device is also installed on the conveyor frame, and the cutting device is provided with an annular belt knife located above the planting disk and partially moving in a longitudinal direction, and the annular belt knife is connected to a first power device that drives it to rotate in a circular direction.

[0008] The cutting device includes a door-shaped protective cover installed across the conveying frame, and a power wheel and a tension wheel are installed in the door-shaped protective cover, which are respectively located on both sides of the conveying frame. The annular belt knife is sleeved on the power wheel and the tension wheel. The first power device includes a first motor, and a belt sleeve connection is arranged between the power wheel and the rotating shaft of the first motor.

[0009] A longitudinal slide groove and a slider matching the slide groove are installed on the inner side of the door-shaped protective cover, the tensioning wheel is hingedly installed on the end face of the slider, one end side of the slider is connected to a longitudinal sleeve, a pushing screw partially exposed to the outer side of the door-shaped protective cover is sleeved in the sleeve, the pushing screw is threadedly connected to the door-shaped protective cover, a first spring fixedly connected between the inner side wall of the door-shaped protective cover and the end of the sleeve is sleeved on the pushing screw, and a transverse limit screw is arranged through the other end face of the slider.

[0010] Two symmetrically arranged guide plates that shrink from front to back are also installed on both sides of the front end of the cutting device, and a trumpet-shaped space that is larger at the front and smaller at the back is formed between the two guide plates.

[0011] A first driving wheel and a first driven wheel are respectively installed at both ends of the conveying frame, a conveying belt is sleeved on the first driving wheel and the first driven wheel, the planting plate is placed on the upper surface of the conveying belt, and the first driving wheel is connected to a second motor to drive it to rotate.

[0012] A lifting foot pad is installed at the bottom of the conveying frame.

[0013] The conveying frame is located below the cutting device and is also provided with a pressure plate wheel that presses on the surface of the planting disk and can only rotate in a circumferential direction. The pressure plate wheel is provided with a hinge shaft, and the conveying frame is fixedly connected with a horizontal pressure wheel mounting seat, one end of the pressure wheel mounting seat is hinged to one end of a pressure wheel rod, and the other end of the pressure wheel rod is fixedly connected to the middle part of the hinge shaft, and the end of the hinge shaft away from the pressure plate wheel is provided with a second spring connected to the pressure wheel mounting seat, and the middle part of the pressure wheel rod is fixedly connected with an adjusting bolt, and the adjusting bolt is threadedly connected with an adjusting screw, and the bottom end of the adjusting screw axially rests on the pressure wheel mounting seat.

[0014] A longitudinal vegetable pulling rod is hingedly installed above the annular belt knife in the door-shaped protective cover. The vegetable pulling rod can only rotate circumferentially but cannot move axially. A plurality of vegetable pulling brushes arranged transversely and in parallel are fixedly connected to the vegetable pulling rod. The vegetable pulling rod is connected to a power device for driving it to rotate.

[0015] The beneficial effects of the present invention are as follows: the automated leafy vegetable harvesting line of the present invention comprises a conveying frame and a planting disk installed on the conveying frame and moving in a transverse direction; the conveying frame is also equipped with a cutting device, the cutting device is provided with an annular belt knife, the annular belt knife is connected to a first power device that drives it to rotate in an annular direction, a planting cup planted with leafy vegetables is placed on the planting disk, and the annular belt knife is used to cut and harvest the leafy vegetables when the planting cup moves to the bottom of the cutting device, the cutting effect is good, damage to the leafy vegetables is avoided, and the cutting mouth is smooth; in addition, the pressure plate wheel pressed on the surface of the planting disk presses the planting disk onto the conveyor belt until the entire cutting process is completed, avoiding sliding and jumping of the planting disk under the cutting force of the annular belt knife, thereby ensuring stability during cutting; various mechanisms on the cutting device can also adjust the state of the annular belt knife to ensure the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 is a side view of the cutting device;

[0018] Figure 3 yes Figure 2 Structural cross-section view at AA in the middle;

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0020] Figure 5 It is a partial structural schematic diagram of the present invention;

[0021] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point B in the middle. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] like Figures 1 to 6 As shown, an automated leafy vegetable harvesting line comprises a conveyor frame and a planting tray 2 installed on the conveyor frame 1 and moving in a transverse direction. A cutting device is also installed on the conveyor frame 1. The cutting device is provided with an annular belt knife 3 located above the planting tray 2 and partially moving in a longitudinal direction. The annular belt knife 3 is connected to a first power device for driving the annular rotation thereof. A planting cup planted with leafy vegetables is placed on the planting tray 2. When the planting cup moves to the bottom of the cutting device, the annular belt knife is used for cutting and harvesting. The cutting effect is good, damage to the leafy vegetables is avoided, and the cutting mouth is smooth.

[0024] The cutting device includes a door-shaped protective cover 4 installed astride the conveyor frame 1, and a power wheel 5 and a tension wheel 6 are installed in the door-shaped protective cover 4, which are respectively located on both sides of the conveyor frame 1. The annular belt knife 3 is sleeved on the power wheel 5 and the tension wheel 6. The first power device includes a first motor 7, and a belt 8 is sleeved and connected between the power wheel 5 and the rotating shaft of the first motor 7. When working, the annular belt knife 3 moves in an annular shape around the power wheel 5 and the tension wheel 6 under the drive of the first motor 7. When cutting leafy vegetables, the cutting is performed by a straight cutting part that runs to the lower end of the door-shaped protective cover 4. The structure is simple, and the use of the annular belt knife 3 is superior to the cutting knife in the prior art, with good cutting effect and long service life.

[0025] In order to obtain a better cutting effect in this embodiment, adjustments must be made according to the requirements of different leafy vegetable types, sizes and specifications, so there are many ways to adjust, including adjusting the tension of the annular belt knife 3 in the cutting device, the cutting angle of the annular belt knife 3 in the cutting device, the height of the planting tray 2, and the smoothness of the transportation of the planting tray 2.

[0026] In order to facilitate the disassembly and assembly of the annular belt knife 3 and the adjustment of the tensioning degree of the annular belt knife 3 in the cutting device, in the present embodiment, a longitudinal slide groove 24 and a slider 25 matching the slide groove 24 are installed on the inner side of the door-shaped protective cover 4, and the tensioning wheel 6 is hingedly installed on the end face of the slider 25, and a longitudinal sleeve 26 is connected to the side face of one end of the slider 25, and a pushing screw 27 partially exposed to the outer side face of the door-shaped protective cover 4 is sleeved in the sleeve 26, and the pushing screw 27 is threadedly connected to the door-shaped protective cover 4, and a first spring 28 fixedly connected between the inner side wall of the door-shaped protective cover 4 and the end of the sleeve 26 is sleeved on the pushing screw 27, and a transverse limit screw 29 is penetrated through the other end face of the slider 25, and a handle 30 is fixedly connected to the end of the pushing screw 27 exposed to the door-shaped protective cover 4.

[0027] When installing the annular belt knife 3, twist the handle 30. Under the elastic force of the first spring 28, the tensioning wheel 6 moves toward the power wheel 5, reducing the distance between the tensioning wheel 6 and the power wheel 5. The installer only needs to wear gloves to install the annular belt knife 3 on the edge of the tensioning wheel 6 and the power wheel 5, and then twist the handle 30. The tensioning wheel 6 moves away from the power wheel 5, and the annular belt knife 3 is tensioned between the two wheels.

[0028] In order to prevent the tensioning wheel 6 from being axially non-parallel to the power wheel 5, causing the annular belt knife 3 to fly out during operation, it is only necessary to slightly turn the limit screw 29 to tilt the entire right side of the tensioning wheel 6 toward the door-shaped protective cover 4, so that the annular belt knife 3 is close to the raised part inside the wheel edge to prevent the annular belt knife 3 from moving outward. Finally, twist the handle 30, and the entire fixing and tensioning process of the annular belt knife 3 is completed, and leafy vegetable cutting can be carried out.

[0029] When the tensioning wheel 6 is higher on the left and lower on the right, the annular belt knife 3 will shift to the lower side. There is a raised wheel edge on the inner edge of the tensioning wheel 6 to prevent the annular belt knife 3 from continuing to shift backwards. In addition, the entire tensioning wheel 6 is subjected to the pulling force of the first spring 28, so the annular belt knife 3 is fixed on the tensioning wheel 6 and the power wheel 5.

[0030] For the cutting angle of the annular belt knife 3 in the cutting device, a foot 31 is provided at the bottom of the door-shaped protective cover 4, and at least two feet 31 are provided on both sides of the door-shaped protective cover 4 respectively. The foot 31 is installed on a support frame 32 through bolt threads. When the cutting angle needs to be adjusted, a gasket of a certain thickness can be added between the foot 31 and the support frame 32. The structure is simple and the adjustment is convenient.

[0031] Two symmetrically arranged guide plates 9 that shrink from front to back are also installed on both sides of the front end of the cutting device. A trumpet-shaped space that is larger in front and smaller in the back is formed between the two guide plates 9. This trumpet-shaped space is used to gather scattered leafy vegetables to prepare for the subsequent leafy vegetable cutting and preventing them from falling over after cutting.

[0032] A first driving wheel 10 and a first driven wheel 11 are respectively installed at both ends of the conveying frame 1, and a conveying belt 13 is sleeved on the first driving wheel 10 and the first driven wheel 11. The planting plate 2 is placed on the upper surface of the conveying belt 13, and the first driving wheel 10 is connected to a second motor 14 that drives it to rotate; a lifting foot pad 15 is installed at the bottom of the conveying frame 1, and the lifting foot pad 15 is threadedly connected to the bottom of the conveying frame 1 through bolts. The height of the conveying frame 1 can be adjusted according to different leaf vegetable cutting heights, and then the cutting distance between the conveying line and the cutting device can be adjusted to make the leaf vegetable cutting work more reliable.

[0033] A pressing wheel 16 is provided on the conveying frame 1 below the cutting device, which is pressed on the surface of the planting tray 2 and can only rotate in the circumferential direction. In this embodiment, there are four pressing wheels 16, which are respectively arranged on the left and right sides of the conveying frame 1.

[0034] The pressure plate wheel 16 is provided with a hinge shaft 12, and the conveying frame 1 is fixedly connected with a horizontal pressure wheel mounting seat 17. One end of the pressure wheel mounting seat 17 is hinged with one end of a pressure wheel rod 18, and the other end of the pressure wheel rod 18 is fixedly connected to the middle part of the hinge shaft 12. The end of the hinge shaft 12 away from the pressure plate wheel 16 is provided with a second spring 19 connected to the pressure wheel mounting seat 17. The middle part of the pressure wheel rod 18 is fixedly connected with an adjusting bolt 20, and the adjusting bolt 20 is threadedly connected with an adjusting screw 21. The bottom end of the adjusting screw 21 axially rests on the pressure wheel mounting seat 17, and the pressure plate wheel 16 presses the planting disk 2 on the conveyor line onto the conveyor belt 13 until When the entire cutting process is completed, the second spring 19 also plays a certain buffering role while pulling the pressure plate wheel 16 downward. The role of the pressure plate wheel 16 and the second spring 19 is to prevent the planting disk 2 from sliding and jumping under the cutting force of the annular belt knife 3 during cutting. The adjusting screw 21 adjusts the pressure of the pressure plate wheel 16 on the planting disk 2, and the pressure wheel mounting seat 17 supports the adjusting screw 21. Its main function is to control the angle between the pressure wheel rod 18 and the pressure wheel mounting seat 17, so that the pressure plate wheel 16 is slightly lower than the upper surface of the planting disk 2, thereby ensuring the pressing effect and effectively ensuring the integrity and stability of leaf vegetable cutting.

[0035] In addition, the planting disc 2 will be warped and deformed to a certain extent during long-term use. During cutting, the pressing wheel 16 can press the deformed planting disc 2 tightly against the conveying belt 13, thereby ensuring the stability of cutting.

[0036] A longitudinal vegetable plucking rod 22 is hingedly installed above the annular band knife 3 in the door-shaped protective cover 4. The vegetable plucking rod 22 can only rotate circumferentially but cannot move axially. A plurality of vegetable plucking brushes 23 arranged in parallel laterally are fixedly connected to the vegetable plucking rod 22. The vegetable plucking rod 22 is connected to a power device for driving it to rotate. The power device here is a commonly used motor. The motor drives the vegetable plucking rod 22 to rotate. The vegetable plucking brush 23 is relatively long and is used to plucking vegetable leaves, pushing the leafy vegetables to fall toward the side direction of the annular band knife, so that the center of gravity of the leafy vegetables tends to the annular band knife. After the annular band knife cuts, the leafy vegetables naturally fall forward, which is convenient for collecting the leafy vegetables after cutting.

[0037] The working principle of the present invention is:

[0038] The lifting foot pad 15 is adjusted according to the height of different leafy vegetables so that the entire mechanism reaches the same height. Under the action of the first motor 7 driving the conveying belt 13, the planting cups and planting trays with leafy vegetables placed on the conveying frame 1 are transported to the bottom of the cutting device together, and the two guide plates 9 gather the wider leaves to prepare for the subsequent cutting. The pressing plate wheel 16 presses the planting tray to prevent the planting tray from jumping or sliding. The annular belt knife 3 moves in an annular shape around the power wheel 5 and the tensioning wheel 6 under the drive of the first motor 7. When cutting leafy vegetables, the cutting is performed by a straight cutting part that runs to the lower end of the door-shaped protective cover 4. During cutting, the motor drives the plucking vegetable rod 22 to rotate, and the vegetable brush 23 pokes the leaves, pushing the leafy vegetables to fall to the side of the annular belt knife, so that the center of gravity of the leafy vegetables tends to the annular belt knife. After the annular belt knife cuts, the leafy vegetables naturally fall forward, and the cut leafy vegetables continue to be transported backward to complete the packaging.

[0039] The present invention can effectively carry out factory-based leafy vegetable cutting, as well as tension and replace the annular belt knife of the cutting device, and has the following advantages in leafy vegetable cutting: first, the overall mechanism is easy to adjust in all aspects, and hydroponic leafy vegetables can be cut quickly and efficiently; second, the safety of the process of replacing and tensioning the annular belt knife is effectively improved in the cutting part; third, the entire leafy vegetable conveying and cutting process is smooth.

[0040] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. An automated leaf vegetable harvesting line, comprising a conveyor frame and a planting plate (2) mounted on the conveyor frame (1) and moving in a transverse direction, wherein a cutting device is also mounted on the conveyor frame (1), and is characterized in that: The cutting device is provided with an annular belt knife (3) located above the planting disk (2) and partially moving in the longitudinal direction, and the annular belt knife (3) is connected to a first power device that drives it to rotate in an annular direction; The conveying frame (1) is provided with a pressure plate wheel (16) which is pressed on the surface of the planting disk (2) and can only rotate in the circumferential direction, and the pressure plate wheel (16) is provided with a hinge shaft (12). The conveying frame (1) is fixedly connected with a transverse pressure wheel mounting seat (17). One end of the pressure wheel mounting seat (17) is hingedly connected to one end of a pressure wheel rod (18), and the other end of the pressure wheel rod (18) is fixedly connected to the middle part of the hinge shaft (12). The end of the hinge shaft (12) away from the pressure plate wheel (16) is provided with a second spring (19) connected to the pressure wheel mounting seat (17). The middle part of the pressure wheel rod (18) is fixedly connected with an adjusting bolt (20), and the adjusting bolt (20) is threadedly connected with an adjusting screw (21), and the bottom end of the adjusting screw (21) axially abuts against the pressure wheel mounting seat (17); The cutting device comprises a door-shaped protective cover (4) straddling the conveying frame (1), a power wheel (5) and a tension wheel (6) respectively located on both sides of the conveying frame (1) are installed in the door-shaped protective cover (4), the annular belt knife (3) is sleeved on the power wheel (5) and the tension wheel (6), the first power device comprises a first motor (7), and a belt (8) is provided between the power wheel (5) and the rotating shaft of the first motor (7) for sleeve connection; A longitudinal slide groove (24) and a slider (25) matching the slide groove (24) are installed on the inner side of the door-shaped protective cover (4); the tension wheel (6) is hingedly installed on the end surface of the slider (25); a longitudinal sleeve (26) is connected to the side surface of one end of the slider (25); a push screw (27) partially exposed to the outer side surface of the door-shaped protective cover (4) is sleeved in the sleeve (26); the push screw (27) is threadedly connected to the door-shaped protective cover (4); a first spring (28) fixedly connected between the inner side wall of the door-shaped protective cover (4) and the end of the sleeve (26) is sleeved on the push screw (27); and a transverse limit screw (29) is penetrated through the other end surface of the slider (25); Two symmetrically arranged guide plates (9) that shrink from front to back are also installed on both sides of the front end of the cutting device, and a trumpet-shaped space that is larger at the front and smaller at the back is formed between the two guide plates (9).

2. The automated leafy vegetable harvesting line according to claim 1, characterized in that: A first driving wheel (10) and a first driven wheel (11) are respectively mounted at both ends of the conveying frame (1); a conveying belt (13) is sleeved on the first driving wheel (10) and the first driven wheel (11); the planting tray (2) is placed on the upper surface of the conveying belt (13); and the first driving wheel (10) is connected to a second motor (14) for driving the first driving wheel (10) to rotate.

3. The automated leafy vegetable harvesting line according to claim 1, characterized in that: A lifting foot pad (15) is installed at the bottom of the conveying frame (1).

4. The automated leafy vegetable harvesting line according to claim 1, characterized in that: A longitudinal vegetable pulling rod (22) is hingedly mounted above the annular band knife (3) in the door-shaped protective cover (4); the vegetable pulling rod (22) can only rotate in the circumferential direction but cannot move in the axial direction; a plurality of vegetable pulling brushes (23) arranged in parallel in the transverse direction are fixedly connected to the vegetable pulling rod (22); and the vegetable pulling rod (22) is connected to a power device for driving the rotation thereof.

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