Accurate positioning cutting device for Chinese cabbage harvesting

Abstract

The invention provides a precise positioning and cutting device for Chinese cabbage harvesting. The precise positioning and cutting device comprises a clamping and conveying device and a cutting device body. The clamping and conveying device comprises two clamping and conveying mechanisms which are symmetrically arranged left and right; each clamping and conveying mechanism comprises a driving wheel mounting plate, a driving wheel, a mounting frame, a driven wheel, a driven wheel mounting plate, a limiting lifting rod and a conveying belt; a lifting channel is formed between the two symmetrical limiting lifting rods, a clamping and conveying channel is formed between the two symmetrical conveying belts, the clamping and conveying channel is used for clamping and conveying roots of Chinese cabbages, and the lifting channel is located above the clamping and conveying channel and used for lifting short and shrunk stems of the Chinese cabbages; the clamping and conveying channel is parallel to the lifting channel, and a cutting device is arranged below the tail end of the clamping and conveying channel and used for cutting roots of Chinese cabbages. The root cutting precision is improved, precise cutting is achieved, the conveying and root cutting effects of the Chinese cabbage harvesting machine are improved, the harvesting damage rate is reduced, manual secondary cutting is not needed after harvesting, and the harvesting efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural machinery, and particularly relates to a precise positioning cutting device for Chinese cabbage harvesting. Background Art

[0002] In 2022, the total output of Chinese cabbage in China reached 113.86 million tons, ranking first in the world; the planting area was approximately 40 million mu, accounting for about 15% of the total planting area of various vegetables in China. Moreover, there are few types of special devices for Chinese cabbage harvesting in the country. Most of them use the combined harvesters for cabbage, cauliflower, etc. for harvesting, with poor adaptability and easy damage during the harvesting process. Therefore, most Chinese cabbage harvesting operations are completed manually. Most of the existing Chinese cabbage harvesting machines use the method of directly cutting the roots after pulling, and the cutting accuracy is easily interfered by various factors, with a large error. Some of the existing technologies adopt the harvesting process of cutting the roots first and then pulling, but it is easy to damage the Chinese cabbage sphere, with a high damage rate. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides a precise positioning cutting device for Chinese cabbage harvesting, which is beneficial to improving the cutting accuracy of the roots during Chinese cabbage harvesting, thereby enhancing the conveying and root-cutting effect of Chinese cabbage harvesting machinery, reducing the harvesting damage rate, and moreover, there is no need for manual secondary cutting after harvesting, greatly improving the harvesting efficiency.

[0004] Note that the recording of these objectives does not prevent the existence of other objectives. One embodiment of the present invention does not need to achieve all of the above objectives. Objectives other than the above can be extracted from the descriptions of the specification, drawings, and claims.

[0005] The present invention achieves the above technical objectives through the following technical means.

[0006] A precise positioning cutting device for Chinese cabbage harvesting includes a clamping and conveying device and a cutting device;

[0007] The clamping and conveying device includes two clamping and conveying mechanisms arranged symmetrically left and right. Each clamping and conveying mechanism includes a driving wheel mounting plate, a driving wheel, a mounting frame, a driven wheel, a driven wheel mounting plate, a limiting and lifting rod, and a conveyor belt. The mounting frame includes a long strip mounting plate and a square tube. The long strip mounting plate is arranged parallel to one side of the square tube, and one end of the long strip mounting plate is connected to one end of the square tube. The driving wheel is mounted on the other end of the long strip mounting plate through the driving wheel mounting plate, the driven wheel is mounted on the other end of the square tube through the driven wheel mounting plate, the conveyor belt is wound around the driving wheel and the driven wheel, the limiting and lifting rod is mounted on the other side of the square tube, a lifting channel is formed between two symmetrical limiting and lifting rods, a clamping and conveying channel is formed between two symmetrical conveyor belts. The clamping and conveying channel is used for clamping and conveying the root of Chinese cabbage, and the lifting channel is located above the clamping and conveying channel for lifting the short stem of Chinese cabbage. The clamping and conveying channel and the lifting channel are parallel, and a cutting device is arranged below the end for cutting the root of Chinese cabbage.

[0008] In the above solution, the lifting channel formed between two symmetrical limiting and lifting rods is in a trumpet shape at the feeding place.

[0009] In the above solution, the flexible clamping mechanism further includes an L-shaped plate and a limiting and lifting rod mounting plate. One end of the L-shaped plate is provided with a longitudinal first long sliding groove, and the other end is provided with a transverse second long sliding groove. The limiting and lifting rod is mounted on the limiting and lifting rod mounting plate, and the limiting and lifting rod mounting plate is connected to the first long sliding groove on the L-shaped plate. The mounting height of the limiting and lifting rod is adjusted through the first long sliding groove, and the second long sliding groove is connected to the square tube. The transverse mounting distance between two limiting and lifting rods is adjusted through the second long sliding groove.

[0010] In the above solution, the cutting device includes two cutting mechanisms arranged symmetrically left and right.

[0011] Each cutting mechanism includes a cutter driving motor, a cutter mounting plate, and a disc profiling cutter. The disc profiling cutter is mounted above the cutter mounting plate, and the cutter driving motor is mounted below the cutter mounting plate. The cutter driving motor is connected to the double disc profiling cutter for driving the disc profiling cutter to rotate. The two disc profiling cutters are arranged vertically and partially overlap.

[0012] The edge of the disc profiling cutter has a plurality of saw teeth, and the inner and outer edges of the saw teeth are both arc-shaped.

[0013] Preferably, the distance D from the tooth top to the tooth root of the saw teeth of the disc profiling cutter is equal to the distance d between adjacent tooth tops.

[0014] Preferably, a transverse third long sliding groove is provided on the cutter mounting plate, and the cutter shaft passes through the third long sliding groove and is connected to the output shaft of the cutter driving motor. The mounting distance between the two disc profiling cutters can be adjusted through the third long sliding groove, thereby changing the overlapping area between the two disc profiling cutters.

[0015] Preferably, the cutting device further includes a cutter height adjusting tube, a cutter fixing tube, a threaded cylinder, and bolt mounting holes;

[0016] One end of the cutter fixing tube is connected to the long strip mounting plate, the other end of the cutter fixing tube is nested with one end of the cutter height adjusting tube, and the other end of the cutter height adjusting tube is connected to the cutter mounting plate;

[0017] A threaded cylinder is provided on the upper part of the cutter fixing tube. The upper parts of the cutter height adjusting tube and the cutter fixing tube are pressed tightly by bolts passing through the threaded cylinder. A fourth long sliding groove is further provided on the lower part of the cutter fixing tube, and a plurality of bolt mounting holes are provided on the cutter height adjusting tube. The lower parts of the cutter height adjusting tube and the cutter fixing tube are connected by bolts passing through the fourth long sliding groove and the bolt mounting holes.

[0018] In the above solution, the clamping and conveying device further includes a conveyor belt driving motor, a bevel gear box, a cone gear box, and a coupling;

[0019] The conveyor belt driving motor is installed on the driving wheel mounting plate. The conveyor belt driving motor is connected to one side of the bevel gear box, and the other side of the bevel gear box is connected to the cone gear box through a coupling. Two symmetrically arranged driving wheels are respectively connected to the cone gear box and the bevel gear box, and the conveyor belt driving motor drives the driving wheels to work.

[0020] In the above solution, each of the clamping and conveying mechanisms further includes an auxiliary tensioning mechanism;

[0021] The auxiliary tensioning mechanism includes an adjusting piece, a spring rod, an adjustable tensioning wheel, a fixed tensioning wheel, a tension spring, a tensioning wheel mounting plate, and an adjusting plate; the middle of the spring rod is hinged to the square tube, one end of the spring rod is installed with a tensioning wheel, the other end is connected to one end of the tension spring, the tensioning wheel is in contact with the inner wall of the synchronous belt on the inner side, the other end of the tension spring is connected to the adjusting piece, the adjusting piece is installed on the adjusting plate, and the adjusting plate is connected to the outer side of the square tube; one end of the mounting shaft of the fixed tensioning wheel is connected to the tensioning wheel mounting plate, the other end is connected to the bent steel plate, and the fixed tensioning wheel is in contact with the inner wall of the synchronous belt on the outer side; a transverse fifth long sliding groove is provided on the tensioning wheel mounting plate, and the tensioning wheel mounting plate is connected to one side of the square tube through bolts passing through the fifth long sliding groove; a transverse sixth long sliding groove is provided on the bent steel plate, and the bent steel plate is connected to the other side of the square tube through bolts passing through the sixth long sliding groove. The conveyor belt is tensioned by adjusting the installation positions of the fifth long sliding groove on the tensioning wheel mounting plate and the sixth long sliding groove on the bent steel plate.

[0022] A Chinese cabbage harvester, characterized in that it includes the precise positioning and cutting device for Chinese cabbage harvesting.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. The clamping and conveying device of the present invention includes a limiting and lifting rod and a conveyor belt. A lifting channel is formed between two symmetric limiting and lifting rods, and a clamping and conveying channel is formed between two symmetric conveyor belts. The clamping and conveying channel is used for clamping and conveying the roots of Chinese cabbages, and the lifting channel is located above the clamping and conveying channel for lifting the short stalks of Chinese cabbages, ensuring stable clamping during the conveying process of Chinese cabbages, reducing phenomena such as slipping and falling, and also restricting the position of the short stalks of Chinese cabbages, which is more conducive to the cutting device cutting the roots of Chinese cabbages, improving the cutting accuracy, realizing precise cutting, and reducing the harvesting damage rate; at the same time, the clamping force of the conveyor belt on the Chinese cabbages can reduce the cutting force required by the cutter, reducing the power consumption of the driving device.

[0025] 2. The feeding part of the limiting and lifting rod of the present invention is in a horn-shaped angle, which is easy to lift the short stalks of Chinese cabbages upward into the lifting channel, and the lateral installation spacing and longitudinal installation spacing of the conveyor belt are adjustable. The appropriate installation spacing of the conveyor belt can be selected according to the past harvesting data of Chinese cabbage varieties, realizing the stable conveying of Chinese cabbages, being applicable to different varieties of Chinese cabbages, and improving the adaptability.

[0026] 3. The cutter of the present invention adopts a double-disc profiling cutter. The edge of the disc profiling cutter has a plurality of saw teeth, and the inner and outer edges of the saw teeth are both arc-shaped. The arc can better fit the arc section of the Chinese cabbage root and stem, further improving the cutting efficiency. And the distance from the tooth top to the tooth root is equal to the distance between adjacent tooth tips, which can increase the contact area between the cutting edge and the root of the Chinese cabbage during cutting, with higher cutting efficiency and less cutting power consumption required by the drive system.

[0027] 4. The installation spacing of the disc profiling cutter of the present invention is adjustable, and thus the overlapping area between the two disc profiling cutters is adjustable, which can realize the effective cutting of the roots of Chinese cabbages of different varieties and different sizes, and improve the applicability at the same time.

[0028] 5. The harvester of the present invention can meet the two harvesting requirements of harvesting with roots and cutting roots, and there is no need for manual secondary cutting after harvesting, greatly improving the harvesting efficiency.

[0029] Note that the recording of these effects does not prevent the existence of other effects. One embodiment of the present invention does not necessarily have all the above effects. Effects other than the above can be obviously seen and extracted from the descriptions in the specification, drawings, claims, etc. Description of the Drawings

[0030] Figure 1It is a schematic structural diagram of a precise positioning cutting device for Chinese cabbage harvesting according to an embodiment of the present invention;

[0031] Figure 2 It is a schematic structural diagram of a clamping and conveying device according to an embodiment of the present invention;

[0032] Figure 3 It is a schematic installation diagram of a limit lifting rod according to an embodiment of the present invention;

[0033] Figure 4 It is a schematic structural diagram of a cutting device according to an embodiment of the present invention;

[0034] Figure 5 It is a schematic structural diagram of a profiling cutter according to an embodiment of the present invention;

[0035] Figure 6 It is a schematic bottom structural diagram of an auxiliary conveying and cutting device according to an embodiment of the present invention;

[0036] Figure 7 It is a schematic structural diagram of an auxiliary tensioning device according to an embodiment of the present invention;

[0037] Figure 8 It is a schematic structural diagram of a side - suspended unmanned Chinese cabbage harvesting machine according to an embodiment of the present invention.

[0038] In the figure: 1. Clamping and conveying device; 2. Cutting device; 4. Conveyor belt drive motor; 5. Driving wheel mounting plate; 6. Driving wheel; 7. Long strip mounting plate; 8. Bevel gear box; 9. Installation frame; 10. Adjusting piece; 11. Spring rod; 12. Tensioning wheel; 13. Driven wheel; 14. Driven wheel mounting plate; 15. Limit lifting rod; 16. Limit lifting rod mounting plate; 18. Cutter drive motor; 19. Cutter mounting plate; 20. Disc profiling cutter; 21. Cutter height adjusting tube; 23. Bevel gear box; 24. Coupling; 25. Fixed tensioning wheel; 27. Square tube; 29. Threaded cylinder; 30. Bolt mounting hole; 31. Tensile spring; 33. L - shaped plate; 34. Tensioning wheel mounting plate; 35. Adjusting plate; 36. Bent steel plate. Detailed implementation manners

[0039] The following details the embodiments of the present invention. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "front", "rear", "left", "right", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiment 1

[0043] Figure 1-2 A preferred embodiment of the precise positioning cutting device for Chinese cabbage harvesting according to the present invention is shown. The precise positioning cutting device for Chinese cabbage harvesting includes a clamping and conveying device 1 and a cutting device 2;

[0044] The clamping and conveying device 1 includes two clamping and conveying mechanisms arranged symmetrically left and right. Each clamping and conveying mechanism includes a driving wheel mounting plate 5, a driving wheel 6, a mounting frame 9, a driven wheel 13, a driven wheel mounting plate 14, a limiting lifting rod 15 and a conveyor belt. The mounting frame 9 includes a long strip mounting plate 7 and a square tube 27. The long strip mounting plate 7 is arranged parallel to one side of the square tube 27, and one end of the long strip mounting plate 7 is connected to one end of the square tube 27. The driving wheel 6 is mounted on the other end of the long strip mounting plate 7 through the driving wheel mounting plate 5, the driven wheel 13 is mounted on the other end of the square tube 27 through the driven wheel mounting plate 14, the conveyor belt is wound and mounted on the driving wheel 6 and the driven wheel 13, the limiting lifting rod 15 is mounted on the other side of the square tube 27, a lifting channel is formed between two symmetrical limiting lifting rods 15, a clamping and conveying channel is formed between two symmetrical conveyor belts. The clamping and conveying channel is used for clamping and conveying the root of Chinese cabbage, and the lifting channel is located above the clamping and conveying channel for lifting the short stem of Chinese cabbage. The clamping and conveying channel and the lifting channel are parallel, and a cutting device 2 is arranged below the end for cutting the root of Chinese cabbage. The present invention ensures stable clamping of Chinese cabbage during the conveying process, reduces phenomena such as slipping and falling off, limits the position of the short stem of Chinese cabbage, is more conducive to the cutting device cutting the root of Chinese cabbage, improves the cutting accuracy, realizes precise cutting, and reduces the harvesting damage rate.

[0045] Preferably, the lifting channel formed between two symmetrical limiting lifting rods 15 is in a trumpet shape at the feeding place, which is convenient for lifting the short stem of Chinese cabbage upward and feeding it into the lifting channel.

[0046] Preferably, the flexible clamping mechanism further includes an L-shaped plate 33. As Figure 3 shown, it is the bottom view of the flexible clamping mechanism. One end of the L-shaped plate 33 is provided with a longitudinal first long chute, and the other end is provided with a transverse second long chute. The limiting lifting rod 15 is mounted on the limiting lifting rod mounting plate 16, and the limiting lifting rod mounting plate 16 is connected to the first long chute on the L-shaped plate 33. The mounting height of the limiting lifting rod 15 is adjusted through the first long chute, and the second long chute is connected to the square tube 27. The transverse mounting distance between two limiting lifting rods 15 is adjusted through the second long chute, which can effectively and precisely cut the roots of Chinese cabbages of different varieties and sizes, and improve the applicability.

[0047] As Figure 4-5 shown, the cutting device 2 includes two cutting mechanisms arranged symmetrically left and right.

[0048] Each of the cutting mechanisms includes a cutter driving motor 18, a cutter mounting plate 19, and a disc profiling cutter 20; the disc profiling cutter 20 is mounted above the cutter mounting plate 19, and the cutter driving motor 18 is mounted below the cutter mounting plate 19. The cutter driving motor 18 is connected to the double disc profiling cutter 20 for driving the disc profiling cutter 20 to rotate; the two disc profiling cutters 20 are arranged vertically and partially overlap.

[0049] The edge of the disc profiling cutter 20 has a plurality of saw teeth, and the inner and outer edges of the saw teeth are both arc-shaped, which can better fit the arc-shaped cut surface of the Chinese cabbage root system and improve the cutting accuracy.

[0050] Preferably, the distance D from the tooth tip to the tooth root of the saw teeth of the disc profiling cutter 20 is equal to the distance d between adjacent tooth tips, which is used to increase the contact area between the cutting edge and the Chinese cabbage root during cutting and improve the cutting efficiency.

[0051] Preferably, a horizontal third long chute is provided on the cutter mounting plate 19. The cutter shaft passes through the third long chute and is connected to the output shaft of the cutter driving motor 18. The installation distance between the two disc profiling cutters 20 can be adjusted through the third long chute, so as to change the overlapping area between the two disc profiling cutters 20, further improve the Chinese cabbage harvesting efficiency, and improve the adaptability at the same time.

[0052] Preferably, the cutting device 2 further includes a cutter height adjustment tube 21, a cutter fixing tube 22, a threaded cylinder 29, and a bolt mounting hole 30.

[0053] One end of the cutter fixing tube 22 is connected to the long strip mounting plate 7, the other end of the cutter fixing tube 22 is nested with one end of the cutter height adjustment tube 21, and the other end of the cutter height adjustment tube 21 is connected to the cutter mounting plate 19.

[0054] A threaded cylinder 29 is provided on the upper part of the cutter fixing tube 22. The cutter height adjustment tube 21 and the upper part of the cutter fixing tube 22 are tightened by passing a bolt through the threaded cylinder 29, effectively reducing the vibration generated at the end of the cutter fixing tube 22 during the operation of the harvester; a fourth long chute is further provided on the lower part of the cutter fixing tube 22, and a plurality of bolt mounting holes 30 are provided on the cutter height adjustment tube 21. The cutter height adjustment tube 21 and the lower part of the cutter fixing tube 22 are connected by passing a bolt through the fourth long chute and the bolt mounting hole 30, and the vertical installation position of the cutting device 2 on the clamping and conveying device 1 is adjusted. For Chinese cabbages of different varieties and sizes, the optimal cutting height of the disc profiling cutter 20 is flexibly adjusted, so as to improve the Chinese cabbage harvesting efficiency and improve the adaptability at the same time.

[0055] As Figure 6 shown, the clamping and conveying device 1 further includes a conveyor belt driving motor 4, a bevel gear box 8, a bevel gear box 23, and a coupling 24.

[0056] The conveyor belt driving motor 4 is installed on the driving wheel mounting plate 5. The conveyor belt driving motor 4 is connected to one side of the bevel gear box 8. The other side of the bevel gear box 8 is connected to the bevel gear box 23 through a coupling 24. Two symmetrically arranged driving wheels 6 are respectively connected to the bevel gear box 23 and the bevel gear box 8. The conveyor belt driving motor 4 drives the driving wheels 6 to work. The axial end lengths of the bevel gear box 23 and the bevel gear box 8 installed on the coupling 24 can be manually adjusted, so as to change the installation distance between the two driving wheels 6. Specifically, both ends of the coupling 24 are connected to the axial ends of one shaft each. When it is necessary to increase the installation distance between the two driving wheels 6, the axial ends of the bevel gear box 23 and the bevel gear box 8 installed on the coupling 24 can be pulled outwards to increase the length. When it is necessary to decrease the installation distance between the two driving wheels 6, the axial ends of the bevel gear box 23 and the bevel gear box 8 installed on the coupling 24 can be stuffed inwards to shorten the length, and the adjustment can be completed.

[0057] As Figure 7 shown, each of the clamping and conveying mechanisms further includes an auxiliary tensioning mechanism;

[0058] The auxiliary tensioning mechanism includes an adjusting piece 10, a spring rod 11, an adjustable tensioning wheel 12, a fixed tensioning wheel 25, a tension spring 31, a tensioning wheel mounting plate 34 and an adjusting plate 35. The middle of the spring rod 11 is hinged to the square tube 27. One end of the spring rod 11 is installed with the adjustable tensioning wheel 12, and the other end is connected to one end of the tension spring 31. The adjustable tensioning wheel 12 contacts the inner wall of the synchronous belt. The other end of the tension spring 31 is connected to the adjusting piece 10. The adjusting piece 10 is installed on the adjusting plate 35. The adjusting plate 35 is connected to the outside of the square tube 27. One end of the mounting shaft of the fixed tensioning wheel 25 is connected to the tensioning wheel mounting plate 34, and the other end is connected to the bent steel plate 36. The fixed tensioning wheel 25 contacts the inner wall of the outer synchronous belt. The tensioning wheel mounting plate 34 is provided with a transverse fifth long chute. The tensioning wheel mounting plate 34 is connected to one side of the square tube 27 through a bolt passing through the fifth long chute. The bent steel plate 36 is provided with a transverse sixth long chute. The bent steel plate 36 is connected to the other side of the square tube 27 through a bolt passing through the sixth long chute. By adjusting the installation positions of the fifth long chute on the tensioning wheel mounting plate 34 and the sixth long chute on the bent steel plate 36, the distance between the fixed tensioning wheel 25 and the adjustable tensioning wheel 12 is adjusted to tension the conveyor belt. Specifically, when it is necessary to tighten the conveyor belt, the bolt of the fifth long chute of the tensioning wheel mounting plate 34 is adjusted towards the direction close to the outside of the conveyor belt, and the bolt of the fifth long chute of the bent steel plate 36 is adjusted towards the direction close to the inside of the conveyor belt to complete the tightening of the conveyor belt. At the same time, when adjusting the tension of the conveyor belt, the adjustable tensioning wheel 12 adapts to the conveyor belt with self-adaptive changes through the tension spring 31 without manual adjustment.

[0059] Embodiment 2

[0060] As Figure 8 shown, a Chinese cabbage harvester includes the precise positioning and cutting device for Chinese cabbage harvesting. Its working process is as follows: During operation, first adjust the installation spacing of the conveyor belt and the limit lifting rod 15, the installation height and installation spacing of the disc profiling cutter 20 according to the average size of the Chinese cabbage to be harvested. Then, the device is towed by a tractor to start working. The driving motor 4 of the driving wheel drives the bevel gear box 8 and the bevel gear box 23 to work, causing the driving wheel 6 to rotate in reverse synchronously, driving the conveyor belt to move backward. The cutting tool driving motor 18 drives the disc profiling cutter 20 to rotate in reverse synchronously. The conveyor belt clamps the roots of the Chinese cabbage transported by the clamping and conveying device 1 and conveys it backward synchronously. Subsequently, the Chinese cabbage is fed into the horn-shaped opening of the limit lifting rod 15. The Chinese cabbage enters the lifting and clamping channel. The limit lifting rod 15 holds up the short stem of the Chinese cabbage, restricting the cutting height, that is, the position of the short stem of the Chinese cabbage relative to the cutting tool. The Chinese cabbage is double-clamped by the conveyor belt and the limit lifting rod 15 in the lifting and clamping channel, greatly increasing the stability of the Chinese cabbage during the conveying process, reducing the possibility of the Chinese cabbage falling and toppling, and the Chinese cabbage double-clamped is also convenient for the cutting device 2 to cut, ensuring the cutting accuracy, achieving precise cutting, reducing the damage rate of the Chinese cabbage. After cutting, the conveyor belt discharges the roots of the Chinese cabbage to avoid blockage, and the cutting is completed.

[0061] It should be understood that although this specification is described according to each embodiment, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0062] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A precise positioning and cutting device for Chinese cabbage harvesting, characterized in that, It includes a clamping and conveying device (1) and a cutting device (2); The clamping and conveying device (1) includes two clamping and conveying mechanisms arranged symmetrically left and right. Each clamping and conveying mechanism includes a driving wheel mounting plate (5), a driving wheel (6), a mounting frame (9), a driven wheel (13), a driven wheel mounting plate (14), a limiting and lifting rod (15) and a conveyor belt. The mounting frame (9) includes a long strip mounting plate (7) and a square pipe (27). The long strip mounting plate (7) is arranged parallel to one side of the square pipe (27), and one end of the long strip mounting plate (7) is connected to one end of the square pipe (27). The driving wheel (6) is mounted on the other end of the long strip mounting plate (7) through the driving wheel mounting plate (5), the driven wheel (13) is mounted on the other end of the square pipe (27) through the driven wheel mounting plate (14), the conveyor belt is wound around the driving wheel (6) and the driven wheel (13), the limiting and lifting rod (15) is mounted on the other side of the square pipe (27), a lifting channel is formed between two symmetrical limiting and lifting rods (15), a clamping and conveying channel is formed between two symmetrical conveyor belts. The clamping and conveying channel is used for clamping and conveying the root of Chinese cabbage, the lifting channel is located above the clamping and conveying channel and is used for lifting the short stem of Chinese cabbage. The clamping and conveying channel and the lifting channel are parallel, and a cutting device (2) is arranged below the end for cutting the root of Chinese cabbage.

2. The precise positioning cutting device for Chinese cabbage harvesting according to claim 1, wherein, A lifting channel formed between two symmetrical limiting and lifting rods (15) is in a horn shape at the feeding place.

3. The precise positioning and cutting device for Chinese cabbage harvesting according to claim 1, characterized in that, The flexible clamping mechanism further includes an L-shaped plate (33) and a limiting and lifting rod mounting plate (16). One end of the L-shaped plate (33) is provided with a longitudinal first long sliding groove, and the other end is provided with a transverse second long sliding groove. The limiting and lifting rod (15) is mounted on the limiting and lifting rod mounting plate (16), the limiting and lifting rod mounting plate (16) is connected to the first long sliding groove on the L-shaped plate (33), and the mounting height of the limiting and lifting rod (15) is adjusted through the first long sliding groove. The second long sliding groove is connected to the square pipe (27), and the transverse mounting distance between two limiting and lifting rods (15) is adjusted through the second long sliding groove.

4. The precise positioning and cutting device for Chinese cabbage harvesting according to claim 1, characterized in that, The cutting device (2) includes two cutting mechanisms arranged symmetrically left and right; Each cutting mechanism includes a cutter driving motor (18), a cutter mounting plate (19) and a disc profiling cutter (20). The disc profiling cutter (20) is mounted above the cutter mounting plate (19), the cutter driving motor (18) is mounted below the cutter mounting plate (19), and the cutter driving motor (18) is connected to the double disc profiling cutter (20) for driving the disc profiling cutter (20) to rotate. Two disc profiling cutters (20) are arranged vertically and partially overlap; The edge of the disc profiling cutter (20) has a plurality of saw teeth, and the inner and outer edges of the saw teeth are both arc-shaped.

5. The precise positioning cutting device for Chinese cabbage harvesting according to claim 4, characterized in that, The distance D from the tooth tip to the tooth root of the saw teeth of the disc profiling cutter (20) is equal to the distance d between adjacent tooth tips.

6. The precise positioning cutting device for Chinese cabbage harvesting according to claim 4, wherein, A transverse third long sliding groove is provided on the cutter mounting plate (19). The cutter shaft passes through the third long sliding groove and is connected to the output shaft of the cutter driving motor (18). The mounting distance between the two disc profiling cutters (20) can be adjusted through the third long sliding groove, so as to change the overlapping area between the two disc profiling cutters (20).

7. The precise positioning cutting device for Chinese cabbage harvesting according to claim 4, wherein, The cutting device (2) further includes a cutter height adjusting tube (21), a cutter fixing tube (22), a threaded cylinder (29) and a bolt mounting hole (30); One end of the cutter fixing tube (22) is connected to the long strip mounting plate (7). The other end of the cutter fixing tube (22) is nested with one end of the cutter height adjusting tube (21). The other end of the cutter height adjusting tube (21) is connected to the cutter mounting plate (19); A threaded cylinder (29) is provided on the upper part of the cutter fixing tube (22). The upper parts of the cutter height adjusting tube (21) and the cutter fixing tube (22) are pressed tightly by a bolt passing through the threaded cylinder (29). A fourth long sliding groove is further provided on the lower part of the cutter fixing tube (22). A plurality of bolt mounting holes (30) are provided on the cutter height adjusting tube (21). The lower parts of the cutter height adjusting tube (21) and the cutter fixing tube (22) are connected by a bolt passing through the fourth long sliding groove and the bolt mounting hole (30).

8. The precise positioning and cutting device for Chinese cabbage harvesting according to claim 1, characterized in that, The clamping and conveying device (1) further includes a conveyor belt driving motor (4), a bevel gear box (8), a bevel gear box (23) and a coupling (24); The conveyor belt driving motor (4) is installed on the driving wheel mounting plate (5). The conveyor belt driving motor (4) is connected to one side of the bevel gear box (8). The other side of the bevel gear box (8) is connected to the bevel gear box (23) through a coupling (24). Two symmetrically arranged driving wheels (6) are respectively connected to the bevel gear box (23) and the bevel gear box (8). The conveyor belt driving motor (4) drives the driving wheel (6) to work.

9. The precise positioning and cutting device for Chinese cabbage harvesting according to claim 1, characterized in that, Each of the clamping and conveying mechanisms further includes an auxiliary tensioning mechanism; The auxiliary tensioning mechanism includes an adjusting piece (10), a spring rod (11), an adjustable tensioning wheel (12), a fixed tensioning wheel (25), a tension spring (31), a tensioning wheel mounting plate (34) and an adjusting plate (35); the middle of the spring rod (11) is hinged to the square tube (27), one end of the spring rod (11) is provided with the tensioning wheel (12), the other end is connected to one end of the tension spring (31), the tensioning wheel (12) contacts the inner wall of the synchronous belt, the other end of the tension spring (31) is connected to the adjusting piece (10), the adjusting piece (10) is mounted on the adjusting plate (35), and the adjusting plate (35) is connected to the outer side of the square tube (27); one end of the mounting shaft of the fixed tensioning wheel (25) is connected to the tensioning wheel mounting plate (34), the other end is connected to the bent steel plate (36), and the fixed tensioning wheel (25) contacts the inner wall of the outer synchronous belt; the tensioning wheel mounting plate (34) is provided with a transverse fifth long chute, and the tensioning wheel mounting plate (34) is connected to one side of the square tube (27) through a bolt passing through the fifth long chute; the bent steel plate (36) is provided with a transverse sixth long chute, and the bent steel plate (36) is connected to the other side of the square tube (27) through a bolt passing through the sixth long chute; the conveyor belt is tensioned by adjusting the mounting positions of the fifth long chute on the tensioning wheel mounting plate (34) and the sixth long chute on the bent steel plate (36).

10. A Chinese cabbage harvester, characterized in that, Comprising the precise positioning cutting device for Chinese cabbage harvesting according to any one of claims 1-9.

Images