Self-propelled asparagus lettuce harvesting and planting device
By designing a self-propelled integrated lettuce harvesting and planting device, the problem of insufficient mechanization in lettuce harvesting and planting has been solved. It enables damage-free cutting and leaf removal during lettuce harvesting and low-damage seedling removal during planting, thereby improving the efficiency of automated planting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-03-31
AI Technical Summary
Most existing lettuce harvesting and planting machinery is large and single-function, which cannot meet the needs of small-scale greenhouse planting, resulting in high labor intensity and low automation.
Design a self-propelled lettuce harvesting and planting device that integrates multiple parts such as frame, cutting, conveying, leaf removal, storage, seedling picking and planting. The device achieves automated harvesting, leaf removal, storage and planting of lettuce through motor and chain drive.
It enables damage-free cutting, leaf removal, and storage during lettuce harvesting, as well as low-damage seedling extraction during planting, improving the level of automated planting and making it suitable for greenhouses and small-scale planting.
Smart Images
Figure CN224054884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, specifically to a self-propelled device for harvesting and planting lettuce. Background Technology
[0002] Lettuce has a huge market demand in my country, and due to varying climates and local consumption habits, the demand is relatively high. Currently, many vegetables are grown in greenhouses, allowing for off-season cultivation. However, greenhouse cultivation also brings a greater workload. Traditionally, harvesting and planting lettuce is difficult, requiring a lot of manual labor. People often have to work for long periods bending over and squatting, which is physically demanding. Planting requires both hands to dig holes and transplant seedlings, and watering is necessary after planting. Harvesting typically involves using a sickle to cut the lettuce at the base, then removing the yellowed old leaves at the bottom to conserve nutrients. After harvesting, the lettuce is tied together with tape or rope and stored in a cool, dark place. Care must be taken not to damage the lettuce roots during harvesting to prevent rotting.
[0003] Currently, most agricultural machinery used for lettuce on the market is large-scale traditional machinery that can only perform one function: harvesting or planting. It is bulky and expensive, and is not suitable for greenhouse cultivation or small-scale planting. Therefore, it is necessary to design a small, low-cost agricultural device that integrates lettuce harvesting and planting. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies and provide a self-propelled lettuce harvesting and planting device. This device fills the gap in the market for small agricultural devices that integrate lettuce harvesting and planting functions suitable for greenhouses, reduces manual labor, and effectively improves the level of automated planting.
[0005] This utility model provides a self-propelled lettuce harvesting and planting device, including a frame, which includes a bottom frame, a column, a top seedling picking slide rail frame and a rear mounting frame; the bottom of the frame is set as the driving part, the front end of the frame is set as the cutting part and the conveying part, the middle part of the frame is set as the leaf removal part and the storage part, and the rear end of the frame is set as the seedling picking part and the planting part.
[0006] Preferably, the traveling section includes a drive motor, which is mounted on the bottom frame by bolts and a motor mounting bracket; a drive wheel is mounted on the output shaft of the drive motor; and the driven wheel is rolledly supported at the rear of the traveling section by a bearing housing and a driven wheel axle.
[0007] Preferably, the cutting part includes a cutting motor, a cutting motor mounting bracket, a cutting blade, and a cutting blade connecting flange;
[0008] The cutting motor is installed on the tailstock of the conveying part through bolts and a cutting motor mounting bracket, and the cutting blade is fixed on the cutting blade connecting flange through bolts; the cutting blade connecting flange is fixed on the output shaft of the cutting motor through a locking screw.
[0009] Preferably, the conveying part comprises a driven shaft, a tailstock, a driving shaft, a headstock, a motor, a motor mounting bracket, a shaft coupling, and a conveying belt.
[0010] The motor is installed on the headstock through bolts and a motor mounting bracket, and the output shaft of the motor is connected with the driving shaft through a shaft coupling; the conveying belt is installed on the driving shaft and the driven shaft.
[0011] Preferably, the leaf-removing part comprises a left metal plate, a right metal plate, a bottom connecting metal plate, a front connecting plate, a driven rotating shaft, a driving rotating shaft, a rhombic bearing seat, a driving sprocket, a driven sprocket, a chain, a lettuce pushing plate, a shaft coupling, a motor, a motor mounting bracket, a leaf-removing ring, and a spring.
[0012] The left metal plate, the right metal plate, the bottom connecting metal plate, and the front connecting plate are fixedly installed through bolts.
[0013] The driven sprocket is installed at the middle position of the driven rotating shaft through a locking screw, and the driven rotating shaft is installed between the left metal plate and the right metal plate through the rhombic bearing seat at both ends of the driven rotating shaft.
[0014] The driving sprocket is installed on the driving rotating shaft through a locking screw, and the driving sprocket is installed at the middle position of the left metal plate and the right metal plate.
[0015] The motor is installed on the right metal plate through bolts and a motor mounting bracket; one end of the driving rotating shaft is connected with the output shaft of the motor through a shaft coupling.
[0016] The chain connects the driving sprocket with the driven sprocket; the lettuce pushing plate is installed on the chain through bolts.
[0017] The leaf-removing ring is symmetrically installed on the bending positions of the left metal plate and the right metal plate through bolts, and is kept in an open state through a spring.
[0018] Preferably, the storage part comprises a driving roller, a driven roller, an upright bearing seat, a storage conveying belt, a shaft coupling, a stepping motor, and a motor mounting bracket.
[0019] The driving roller and the driven roller are symmetrically installed on the middle bottom frame of the vehicle frame through the upright bearing seat; the stepping motor is fixed on the vehicle frame through bolts and a motor mounting bracket; one end of the driving roller is connected with the output shaft of the stepping motor through a shaft coupling.
[0020] Preferably, the taking seedling part comprises a cylindrical slide rail, a sliding block, an electric telescopic rod, an electric telescopic rod mounting plate, a connecting plate, a flexible clamp jaw, a stepping motor, a stepping motor mounting frame, a driving synchronous pulley, a synchronous belt, a driven synchronous pulley, a vertical bearing seat and a driven synchronous pulley shaft.
[0021] The cylindrical slide rail is symmetrically mounted below both sides of the top seedling taking slide rail frame by screws; the sliding block is mounted in cooperation with the cylindrical slide rail; the electric telescopic rod is mounted on the sliding block by screws and the electric telescopic rod mounting plate; the connecting plate is mounted on the heads of the electric telescopic rods on both sides; and the flexible clamp jaw is symmetrically mounted on the connecting plate.
[0022] The stepping motor is mounted on the side edge of the top seedling taking slide rail frame by bolts and the stepping motor mounting frame; the driving synchronous pulley is mounted on the output shaft of the stepping motor by a set screw; the vertical bearing seat is mounted on the side edge of the top seedling taking slide rail frame by bolts; the driven synchronous pulley shaft is mounted on one end of the vertical bearing seat; the driven synchronous pulley is mounted on the other end of the driven synchronous pulley shaft; the synchronous belt connects the driving synchronous pulley and the driven synchronous pulley, and the synchronous belt is connected with the sliding block in a horizontal line by screws.
[0023] Preferably, the planting part comprises a vertical double bearing seat, a transmission shaft, a cam, a cam connecting flange, a connecting rod, a sliding block connecting plate, a slide rail, a flange sliding block, a duckbill flared mouth, a duckbill mounting frame, a spring, a synchronous belt, a small synchronous pulley, a large synchronous pulley, a motor, a motor mounting frame, a swing rod, a pull wire and a connecting pin.
[0024] The vertical double bearing seat is symmetrically mounted on the rear mounting frame by bolts; the transmission shaft is mounted on the vertical double bearing seat; the transmission shaft is mounted with the cam connecting flange on one end and the large synchronous pulley on the other end; the cam is mounted on the cam connecting flange by bolts; one end of the connecting rod is mounted on the cam by the connecting pin; the slide rail is mounted on the vertical column of the rear mounting frame by bolts and the vertical center line passes through the axis of the transmission shaft; the flange sliding block is mounted on the slide rail; and the sliding block connecting plate is connected to the flange sliding block by bolts.
[0025] The duckbill flared mouth is symmetrically mounted on the duckbill mounting frame, and the duckbill mounting frame is mounted on the sliding block connecting plate; the spring is clamped on the symmetrically mounted duckbill flared mouth; the motor is mounted on the rear mounting frame by bolts and the motor mounting frame; the small synchronous pulley is mounted on the output shaft of the motor by a set screw; the small synchronous pulley and the large synchronous pulley are connected by the transmission belt; one end of the swing rod is mounted on the rear vertical column, and the other end is in contact with the cam; one end of the pull wire is fixed on the swing rod, and the other end is fixed on the upper part of the duckbill flared mouth.
[0026] The beneficial effects of the present application compared with the prior art are as follows:
[0027] 1. The self-propelled lettuce harvesting and planting device can quickly cut a flat incision during the harvesting process, and the use of a flexible conveyor belt during the conveying process can reduce damage to the lettuce.
[0028] 2. The leaf-removing ring can adapt to lettuce of different thicknesses by using a spring and the gravity of the lettuce, and the movement of the push plate is driven by the chain drive to push the lettuce through the leaf-removing ring, realizing precise leaf removal like a human hand.
[0029] 3. The storage part drives the conveyor belt to move at a fixed distance through a stepper motor, achieving uniform storage of lettuce, and also enabling left and right movement of the seedling tray during planting.
[0030] 4. The transplanting part takes seedlings by flexible clamping jaws, reducing damage to lettuce seedlings during the seedling taking process and improving seedling survival rate.
[0031] 5. The planting part adopts a crank slider mechanism, which evolves the slider into a duckbill structure with soil expansion function, and improves the crank into a cam, which can lift the pull line to open the soil expansion duckbill when the soil expansion duckbill is inserted into the soil, and close when leaving the soil, cooperating with the seedling clamping part to continuously release seedlings, realizing the function of planting.
[0032] 6. The self-propelled lettuce harvesting and planting device integrates harvesting and planting functions into an all-in-one machine, and can automatically drive through a set program, mainly suitable for greenhouse planting and small-scale planting scenes, improving the level of automated planting. BRIEF DESCRIPTION OF DRAWINGS
[0033] Figure 1 The overall schematic view is provided for the utility model;
[0034] Figure 2 The schematic view of the frame is provided for the utility model;
[0035] Figure 3 The structure schematic view of the implementation part is provided for the utility model;
[0036] Figure 4 The structure schematic view of the cutting part is provided for the utility model;
[0037] Figure 5 The structure schematic view of the conveying part is provided for the utility model;
[0038] Figure 6 The structure schematic view of the leaf-removing part is provided for the utility model;
[0039] Figure 7 The structure schematic view of the storage part is provided for the utility model;
[0040] Figure 8 The structure schematic view of the seedling taking part is provided in the utility model.
[0041] Figure 9 The structure schematic view of the seedling planting part is provided in the utility model.
[0042] Figure 10 The structure schematic view of the seedling planting part is provided in the utility model. DETAILED DESCRIPTION
[0043] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as the limitation of the utility model.
[0044] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0045] By Figures 1 to 10 The utility model provides a kind of self-propelled lettuce harvesting and planting device, device includes the car frame 1 of installing each work part, travels part 2 is installed on the bottom of car frame 1 two cross beams, cutting part 3 is symmetrically installed in the tail seat of two conveyors of transmission part 4, transmission part 4, leaf removal part 5, storage part 6, seedling taking part 7, seedling planting part 8 are installed on car frame 1.
[0046] Car frame 1 is used to install the travel part 2 driven whole machine movement, and this part contains driving motor 201, first motor mounting frame 202, driving wheel 203, bearing seat 204, driven wheel shaft 205, driven wheel 206. Travel part realizes forward, backward and steering function by motor speed difference.
[0047] The cutting part 3 comprises a cutting motor 301, a cutting motor mounting frame 302, a cutting blade 303, and a cutting blade connecting flange 304. The cutting part drives the cutting blade 303 to rotate at high speed by the cutting motor 301, so as to realize fast and flat cutting of lettuce, ensure the appearance of the lettuce cutting, and prolong the preservation period of the lettuce to a certain extent.
[0048] The conveying part 4 comprises a driven shaft 401, a tail seat 402, a driving shaft 403, a head seat 404, a first motor 405, a second motor mounting frame 406, a first coupling 407, a conveying belt 408. The first motor 405 transmits power to the driving shaft 403 through the first coupling 407, controls two conveying belts to move at the same speed, the driving shaft 403 drives the conveying belt 408 to rotate through friction, and the tightness of the conveying belt 408 can be adjusted by adjusting the tensioning bolt on the tail seat 402. The conveying belt is a vertical wave-shaped PVC soft belt, which can realize non-damage and directional clamping of lettuce through the staggered belts on both sides, and facilitate uniform direction of the lettuce into the leaf removing part 5 when conveying to the end, so as to ensure that the lettuce falls into the leaf removing part with a correct posture and ensure normal operation of the subsequent work.
[0049] The leaf removing part 5 comprises a left metal part 501, a right metal part 502, a bottom connecting metal part 503, a front connecting plate 504, a driven rotating shaft 505, a driving rotating shaft 506, a diamond-shaped bearing seat 507, a driving sprocket 508, a driven sprocket 509, a chain 510, a lettuce push plate 511, a second coupling 512, a second motor 513, a third motor mounting frame 514, a leaf removing ring 515, and a first spring 516.
[0050] The left metal part 501, the right metal part 502, the bottom connecting metal part 503, and the front connecting plate 504 are fixedly installed by bolt connection. The upper part of the left metal part 501, the right metal part 502, and the front connecting plate 504 is designed to be bent outward, which can guide the lettuce to fall into the correct leaf removing position when the lettuce falls.
[0051] The driven sprocket 509 is installed in the middle of the driven shaft 505 by a set screw, and the rhombic bearing seat 507 is installed at both ends of the driven shaft 505, and the transmission shaft is installed between the left side plate 501 and the right side plate 502 through the rhombic bearing seat 507. The driving sprocket 508 is installed on the driving shaft 506 by a set screw, and the driving sprocket 508 is installed in the middle of the left side plate 501 and the right side plate 502; the second motor 513 is installed on the right side plate 502 through a bolt and a third motor mounting frame 514, and one end of the driving shaft 506 is connected to the output shaft of the second motor 513 through a second coupling 512. The chain 510 connects the driving sprocket 508 and the driven sprocket 509, and the asparagus push plate 511 is installed on the chain by a bolt; the second motor 513 drives the chain 510 to rotate, so that the asparagus push plate 511 on the chain 510 pushes the asparagus falling into the leaf removing part 5 through the leaf removing ring 515, thereby realizing the leaf removing function.
[0052] The leaf removing ring 515 is symmetrically installed on the bending position of the left side plate 501 and the right side plate 502 by a bolt, and the leaf removing ring 515 is in a semicircular shape, and in a non-working state, it is kept in an open state by a first spring 516, and automatically presses down the leaf removing ring 515 when the asparagus falls, at this time, it can completely wrap the asparagus, realize the imitation of human hand to remove the old and rotten leaves at the root, prolong the preservation period of the asparagus, and facilitate subsequent storage.
[0053] The storage part 6 includes a driving roller 601, a driven roller 602, a first vertical bearing seat 603, a storage conveyor belt 604, a third coupling 605, a first stepping motor 606, and a fourth motor mounting frame 607; the driving roller 601 and the driven roller 602 are symmetrically installed on the bottom frame 101 of the frame 1 through the first vertical bearing seat 603, the first stepping motor 606 is fixed on the frame 1 through a bolt and the fourth motor mounting frame 607, and one end of the driving roller 601 is connected to the output shaft of the first stepping motor 606 through the third coupling 605. The first stepping motor 606 is controlled by a sensor, and whenever a asparagus falls, the first stepping motor 606 drives the conveyor belt 604 to move a fixed distance, so as to ensure that the asparagus falls uniformly and avoids accumulation. And the self-propelled asparagus harvesting and planting device also realizes the left and right movement of the seedling tray placed on the conveyor belt 604 through the rotation of the first stepping motor 606 during the planting process, realizes the continuous clamping of the asparagus seedlings, realizes the multifunctional use of the same part, and improves the space utilization rate.
[0054] The taking seedling part 7 comprises a cylindrical slide rail 701, a sliding block 702, an electric telescopic rod 703, an electric telescopic rod mounting plate 704, a first connecting plate 705, a flexible clamping jaw 706, a stepping motor 707, a stepping motor mounting frame 708, a driving synchronous pulley 709, a first synchronous belt 710, a driven synchronous pulley 711, a second vertical bearing seat 712, a driven synchronous pulley shaft 713; the taking seedling part 7 drives the sliding block to move forward and backward through the stepping motor 707, the flexible clamping jaw 706 is aligned with the seedling root to perform flexible clamping, so that the damage to the seedling is reduced, the electric telescopic rod 703 is used to take out the lettuce seedling from the seedling tray, and then the lettuce seedling is moved above the planting part 8, the flexible clamping jaw is loosened, and the lettuce seedling is put in, so that the taking seedling function is realized through the reciprocating movement.
[0055] The planting part 8 comprises a vertical double bearing seat 801, a transmission shaft 802, a cam 803, a cam connecting flange 804, a connecting rod 805, a sliding block connecting plate 806, a slide rail 807, a flange sliding block 808, a duckbill flared portion 809, a duckbill mounting frame 810, a second spring 811, a second synchronous belt 812, a small synchronous pulley 813, a large synchronous pulley 814, a third motor 815, a fifth motor mounting frame 816, a swing rod 817, a pull wire 818 and a connecting pin 819; in the planting unit, a crank and sliding block mechanism is adopted, the sliding block is evolved into a duckbill structure with a soil expanding function, the crank is improved to be integrated with the cam, the duckbill flared portion 809 can be opened by lifting the pull wire 818 when the duckbill flared portion 809 is inserted into the soil, and the duckbill flared portion 809 can be closed when the duckbill flared portion 809 is separated from the soil, the seedling is continuously put in by the taking seedling part 7, and the planting function is realized.
[0056] Finally, the remaining parts of the utility model are mature products and mature technical means in the prior art.
[0057] The embodiments of the utility model are described in detail above, but the contents are only preferred embodiments of the utility model, and cannot be considered as limiting the implementation scope of the utility model. Any equivalent changes and improvements made within the scope of the utility model application should still belong to the patent coverage range of the utility model.
Claims
1. A self-propelled device for harvesting and planting of lettuce, characterized in that: The utility model provides a kind of automatic seedling transplanting machine, including frame (1), which includes bottom frame (101), column (102), top seedling taking slide rail frame (103) and rear mounting bracket (104);The bottom of the frame (1) is set as travel part (2), the front end of the frame is set as cutting part (3) and conveying part (4), in the middle of the frame (1) is set as defoliation part (5) and storage part (6), in the rear end of the frame (1) is set as seedling taking part (7) and planting part (8); The travel part (2) includes drive motor (201), which is installed on the bottom frame (101) by bolt and first motor mounting bracket (202);The output shaft of the drive motor (201) is installed with driving wheel (203);The rear of the travel part (2) is supported with driven wheel (206) by bearing seat (204) and driven wheel shaft (205) rolling; The cutting part (3) includes cutting motor (301), cutting motor mounting bracket (302), cutting blade (303), cutting blade connecting flange (304); The cutting motor (301) is installed on the tail seat (402) of the conveying part (4) by bolt and cutting motor mounting bracket (302), and the cutting blade (303) is fixed on the cutting blade connecting flange (304) by bolt connection;The cutting blade connecting flange (304) is fixed on the output shaft of the cutting motor (301) by tight screw.
2. A self-propelled device for harvesting and planting lettuce according to claim 1, characterized in that: The conveying part (4) includes driven shaft (401), tail seat (402), driving shaft (403), head seat (404), first motor (405), second motor mounting bracket (406), first coupling (407), conveying belt (408); The first motor (405) is installed on the head seat (404) by screw and motor mounting bracket, and the motor output shaft is connected with the driving shaft by the first coupling (407);The conveying belt (408) is installed on the driving shaft (403) and the driven shaft (401).
3. A self-propelled device for harvesting and planting lettuce according to claim 1, characterized in that: The defoliation part (5) includes left side sheet metal part (501), right side sheet metal part (502), bottom connecting sheet metal part (503), front connecting plate (504), driven rotating shaft (505), driving rotating shaft (506), diamond bearing seat (507), driving sprocket (508), driven sprocket (509), chain (510), asparagus push plate (511), second coupling (512), second motor (513), third motor mounting bracket (514), defoliation ring (515), first spring (516); The left side sheet metal part (501), the right side sheet metal part (502), the bottom connecting sheet metal part (503) and the front connecting plate (504) are fixedly installed by bolt connection; The driven sprocket (509) is installed in the middle position of the driven rotating shaft (505) by tight screw, and the diamond bearing seat (507) is installed at both ends of the driven rotating shaft (505), and the transmission rotating shaft is installed between the left side sheet metal part (501) and the right side sheet metal part (502) by the diamond bearing seat (507) The driving sprocket (508) is installed on the driving shaft (506) by a set screw, and the driving sprocket (508) is installed at a middle position between the left metal plate (501) and the right metal plate (502); The second motor (513) is installed on the right metal plate (502) through a bolt and a third motor mounting rack (514); and one end of the driving shaft (506) is connected to an output shaft of the second motor (513) through a second coupling (512); The chain (510) connects the driving sprocket (508) and the driven sprocket (509); and the lettuce push plate (511) is installed on the chain through a bolt; The defoliation ring (515) is symmetrically installed on the bending positions of the left metal plate (501) and the right metal plate (502) through bolts, and is kept in an open state through a first spring (516).
4. The self-propelled lettuce harvesting and planting apparatus according to claim 1, wherein: The storage part (6) comprises a driving roller (601), a driven roller (602), a first vertical bearing seat (603), a storage conveying belt (604), a third coupling (605), a first stepping motor (606), and a fourth motor mounting rack (607); The driving roller (601) and the driven roller (602) are symmetrically installed on the middle bottom frame (101) of the vehicle frame (1) through the first vertical bearing seat (603); the first stepping motor (606) is fixed on the vehicle frame (1) through a bolt and the fourth motor mounting rack (607); and one end of the driving roller (601) is connected to an output shaft of the first stepping motor (606) through the third coupling (605).
5. A self-propelled lettuce harvesting and planting apparatus according to claim 1, characterized in that: The seedling taking part (7) comprises a cylindrical slide rail (701), a sliding block (702), an electric telescopic rod (703), an electric telescopic rod mounting plate (704), a first connecting plate (705), a flexible clamping jaw (706), a second stepping motor (707), a stepping motor mounting rack (708), a driving synchronous pulley (709), a first synchronous belt (710), a driven synchronous pulley (711), a second vertical bearing seat (712), and a driven synchronous pulley shaft (713); The cylindrical slide rail (701) is symmetrically installed below both sides of the top seedling taking slide rail frame (103) through screws; the sliding block (702) is installed in cooperation with the cylindrical slide rail (701); the electric telescopic rod (703) is installed on the sliding block (702) through screws and the electric telescopic rod mounting plate (704); the first connecting plate (705) is installed on the heads of the two electric telescopic rods (703); and the flexible clamping jaw (706) is symmetrically installed on the first connecting plate (705); The second stepper motor (707) is installed on the side of the top seedling taking sliding rail frame (103) through bolts and a stepper motor mounting bracket (708), and a driving synchronous pulley (709) is installed on the output shaft of the second stepper motor (707) through a set screw; the second vertical bearing seat (712) is installed on the side of the top seedling taking sliding rail frame (103) through bolts, and a driven synchronous pulley shaft (713) is installed on one end of the second vertical bearing seat (712), and a driven synchronous pulley (711) is installed on the other end of the driven synchronous pulley shaft (713); the first synchronous belt (710) connects the driving synchronous pulley (709) and the driven synchronous pulley (711), and the first synchronous belt (710) is connected with the sliding block (702) through a screw connection and is horizontally collinearly connected.
6. A self-propelled lettuce harvesting and planting apparatus according to claim 1, characterized in that: The planting part (8) comprises a vertical double bearing seat (801), a transmission shaft (802), a cam (803), a cam connecting flange (804), a connecting rod (805), a sliding block connecting plate (806), a sliding rail (807), a flange sliding block (808), a duckbill flared mouth (809), a duckbill mounting frame (810), a second spring (811), a second synchronous belt (812), a small synchronous pulley (813), a large synchronous pulley (814), a third motor (815), a fifth motor mounting bracket (816), a swing rod (817), a pull wire (818), and a connecting pin (819); The vertical double bearing seat (801) is symmetrically installed on the rear mounting bracket (104) through bolts, the transmission shaft (802) is installed on the vertical double bearing seat (801), one end of the transmission shaft (802) is installed with the cam connecting flange (804), and the other end is installed with the large synchronous pulley (814); the cam (803) is installed on the cam connecting flange (804) through bolts, one end of the connecting rod (805) is installed on the cam (803) through the connecting pin (819), and the sliding rail (807) is installed on the vertical column of the rear mounting bracket (104) through bolts and is vertically centered through the shaft center of the transmission shaft (802); the flange sliding block (808) is installed on the sliding rail (807); and the sliding block connecting plate (806) is connected to the flange sliding block (808) through bolts; The duckbill flared mouth (809) is symmetrically installed on the duckbill mounting frame (810), and the duckbill mounting frame (810) is installed on the sliding block connecting plate (806), and the second spring (811) is clamped on the symmetrically installed duckbill flared mouth (809); the third motor (815) is installed on the rear mounting bracket (104) through bolts and the fifth motor mounting bracket (816), the small synchronous pulley (813) is installed on the output shaft of the third motor (815) through a set screw, and the small synchronous pulley (813) and the large synchronous pulley (814) are connected through the second synchronous belt (812); one end of the swing rod (817) is installed on the rear vertical column (102), and the other end is in contact with the cam; one end of the pull wire (818) is fixed on the swing rod (817), and the other end is fixed on the upper part of the duckbill flared mouth (809).