An all-in-one machine for harvesting, removing roots and leaves and packaging lettuce

Abstract

The invention discloses an integrated machine for harvesting, rooting and removing leaves and packing lettuce, comprising a power trolley, a trailer, a conveying device, a rooting device, a leafing device and a bundling device, wherein the conveying device is mounted on the power trolley, the rooting device, the leafing device and the bundling device are mounted on the trailer, the conveying device comprises a pair of mounting frames tilted from front to rear and upward, each mounting frame is provided with a rubber wheel, a synchronous wheel and a conveyor belt, there are two synchronous wheels, which are respectively mounted on the front and rear sides of the mounting frame, there are multiple rubber wheels, which are spaced between the two synchronous wheels along the length direction of the mounting frame, the conveyor belt is tensioned on the two synchronous wheels, each rubber wheel is mounted on the mounting frame through a spring and a connecting rod, a plurality of grippers are evenly spaced on the outer side of the conveyor belt, a soil breaking mechanism is mounted on the front end of the mounting frame, and a dropper is mounted between the rear sides of the two mounting frames. The integrated machine of the invention has a compact structure and high operating efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of lettuce harvesting, and in particular to an integrated machine for harvesting, removing roots and leaves, and packaging lettuce. Background Art

[0002] Lettuce is cultivated in all parts of China and also grows wild. The harvest period of lettuce in summer is also the time when the shoots grow most quickly. If it is not harvested in time, the plant will become hard or even hollow after bolting, which will greatly affect the yield and quality of the lettuce.

[0003] Currently, most of the lettuces grown are harvested manually or with a small simple cart, and the harvesting process is separated from the peeling process, which greatly prolongs the harvesting time of the lettuce, wastes human resources, and increases labor costs.

[0004] Application No. 202110850164.3 introduces a lettuce combine harvester, which uses a harvesting device, a conveying system, and a leaf stripping device. The leaf stripping device uses a fixed rod, a pressure rod, and an air blowing device to assist in leaf stripping, and a device for tearing and clamping lettuce leaves through the movement of multiple crank sliders. This method focuses on leaf stripping and is slightly insufficient for root cutting and packaging.

[0005] Application No. 202021282007.4 introduces a lettuce harvesting device, which uses a cutter to cut the lettuce roots, and pulls the pull rod to drive the positioning block to replace the cutter, so that the blunt knife that has been working for a long time can be replaced, improving the working efficiency. However, manual timing work is still required and the specific method of leaf removal and packaging is not involved.

[0006] Application No. 201510877425.5 introduces a lettuce harvester and peeler, which can adjust the harvesting height and remove leaves and peel by water pressure. However, there is no specific description on how to harvest, cut roots and pack lettuces at different angles, and the efficiency is average.

[0007] From the existing patent literature, there are patent documents that have been partially optimized for lettuce harvesting, leaf removal, root cutting, and packaging, but there is still room for improvement in efficiency. In addition, there is also a method of using single-function auxiliary operations, that is, combining the operation of the harvesting device with the manual laying operation, and the degree of full automation of the device is average. Therefore, for the fully automatic harvesting of lettuce, it is very necessary to design a machine that integrates lettuce harvesting, leaf removal, root cutting, and packaging. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an all-in-one machine for harvesting, removing and packaging lettuce.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a lettuce harvesting, rooting, leafing and packaging all-in-one machine, including a power trolley, a trailer, a conveying device, a rooting device, a leafing device and a bundling device, the trailer is connected to the rear side of the power trolley by unhooking, the conveying device is installed on the power trolley, the rooting device, the leafing device and the bundling device are installed on the trailer, the conveying device includes a pair of mounting frames inclined from front to rear and upward, each mounting frame is provided with a rubber wheel, a synchronous wheel and a conveyor belt, there are two synchronous wheels, which are respectively installed on the front and rear sides of the mounting frame, there are multiple rubber wheels, which are arranged between the two synchronous wheels at intervals along the length direction of the mounting frame, and the conveying device is provided with a plurality of synchronous wheels. The belt is tensioned on two synchronous wheels, and each of the rubber wheels is installed on the mounting frame through a spring and a connecting rod. One end of the connecting rod is movably installed on the mounting frame through a nut, one end of the spring is fixedly installed on the mounting frame, and the other end is connected to the other end of the connecting rod. The connecting rod is provided with a groove extending along its length direction, the rubber wheel is installed on the connecting rod and can be slid along the groove, and a number of grippers are evenly spaced on the outer side of the conveyor belt, and the cross-section of the grippers is semicircular. The grippers on the two mounting frames correspond to each other in number and position, and a soil breaking mechanism is installed on the front end of the mounting frame, and a dropper is installed between the rear sides of the two mounting frames.

[0010] As a specific embodiment, the soil-breaking mechanism includes a harvester frame, a soil-breaking shovel, a harvesting shovel, and a soil-breaking driving cylinder. The upper end of the harvester frame is hingedly mounted on the front end of the mounting frame, and the lower end is a free end. There are two soil-breaking shovels, which are symmetrically mounted on the harvester frame along the left-right direction. There are also two harvesting shovels, which are respectively located above the two soil-breaking shovels. The soil-breaking driving cylinder is mounted on a power trolley, and its output end is connected to the rear end of the harvester frame. The harvester frame is driven by the soil-breaking driving cylinder to drive the soil-breaking shovel and the harvesting shovel to flip up and down. The two harvesting shovels are arranged in mirror symmetry, and a baffle is arranged on the front end of each harvesting shovel, and the baffle is arranged perpendicular to the harvesting shovel.

[0011] As a specific implementation, the rooting device is installed on a trailer frame, including a receiving tray, a circular plate 1 and a circular plate 2 which are arranged in sequence from top to bottom. The surface of the receiving tray is provided with a plurality of first circular holes which are evenly spaced along the same circumferential direction, and a retaining ring is provided on the circumferential portion of the lower end. The receiving tray can be rotated around its own axial centerline direction. The circular plate 1 is provided with a plurality of circular holes, which correspond to the first circular holes in number and position. One of the plurality of circular holes is a rooting hole, and the rest are second circular holes. The circular plate 2 can be raised and lowered in the up and down directions. The circular plate A notch is provided on the second circular plate, and a top rod corresponding to the second circular hole in number and position is arranged on the surface of the circular plate two. The bottom end of the top rod is fixedly mounted on the circular plate two, and the top end passes through the second circular hole upward, and a top plate is arranged on the top end of the top rod. The top plate is circular and its size is smaller than the first circular hole. The rooting device also includes a rooting motor and a toothed cutter. The rooting motor is mounted on the frame and is located in the notch of the circular plate two. The output end of the rooting motor is arranged vertically upward, and the toothed cutter is mounted on the output end of the rooting motor and corresponds to the position of the rooting hole.

[0012] As a specific embodiment, the rooting device includes a central shaft installed on a trailer frame and a driving motor 1 for driving the central shaft to rotate. The central shaft passes through circular plate 2, circular plate 1, and the center of a receiving tray from bottom to top. The central shaft drives the receiving tray to rotate around its own axis. A pulley 1 is provided on the output end of the driving motor 1, and a pulley 2 is provided on the central shaft. The pulley 1 and the pulley 2 are connected by a synchronous belt.

[0013] As a specific embodiment, the root removal device also includes a lifting cylinder installed on the trailer frame, the output end of the lifting cylinder is fixedly connected to the circular plate 2, and the circular plate 2 is driven to rise and fall by the lifting cylinder. There are two lifting cylinders, which are symmetrically installed below the circular plate 2.

[0014] As a specific embodiment, the leaf removing device includes a leaf removing cylinder, a servo and a leaf removing claw. The leaf removing cylinder is installed on a trailer frame. The output shaft of the leaf removing cylinder extends upward in the vertical direction to above the receiving tray. The servo is installed at the end of the output shaft of the leaf removing cylinder. The leaf removing claw includes two semicircular clamping jaws. The servo is used to drive the two clamping jaws to move closer to or away from each other. The position of the leaf removing claw corresponds to the position of one of the first circular holes on the receiving tray.

[0015] As a specific embodiment, the bundling device includes a pair of symmetrical bundling clamps, and the two bundling clamps can be installed above the receiving tray close to or far away from each other. The bundling device also includes a binding device installed on the trailer frame and located on the upper side of the receiving tray. When the two bundling clamps embrace the lettuce after the leaves are removed from the roots, the lettuce is bundled through the binding device outputting tape.

[0016] As a specific embodiment, an inclined plate is installed on one side surface of the trailer, and the bundling device includes a bundling frame slidably installed on the trailer, a pair of symmetrical bundling drive cylinders are installed on the top of the bundling frame, and two bundling clamps are respectively installed on the output ends of the two bundling drive cylinders. The lettuce after bundling is clamped by the bundling clamps, and then the bundling frame slides along the trailer frame to the inclined plate, and the bundling clamps are released, so that the bundled lettuce is transported along the inclined plate to the collection device.

[0017] As a specific embodiment, the bundling device includes a second drive motor installed on a trailer frame, a rotating shaft and a light rod, the second drive motor and the rotating shaft are respectively installed on the left and right sides of the trailer frame, a track is installed between the output shaft of the second drive motor and the rotating shaft, the track is fixedly connected to the bundling frame, there are two light rods, which are respectively installed on the trailer frame and located on both sides of the track, and the bottom of the bundling frame is fixedly provided with a slider which is matched and sleeved on the light rod and can slide along the length extension direction of the light rod.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] 1) The conveying device of the present invention adopts a rubber wheel, a spring, and a connecting rod structure, so that the distance between the grippers on two adjacent mounting frames can be flexibly adjusted according to the size of the lettuce, thereby solving the problem of tightening the lettuces of different sizes and ensuring the stability of the conveying;

[0020] 2) The soil breaking mechanism of the present invention drives the soil breaking shovel and the harvesting shovel to flip up and down through the soil breaking driving cylinder to break the soil and harvest lettuce, and solves the problem of turning over lettuce at different positions;

[0021] 3) The leaf removal device of the present invention adopts a leaf removal cylinder, a steering gear and a leaf removal claw, which realizes the problem of automatic leaf removal and improves work efficiency;

[0022] 4) The present invention integrates transportation, root removal, leaf removal and packaging, which greatly improves work efficiency and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a general structural diagram of a lettuce harvesting, root removal and leaf packaging integrated machine according to the present invention;

[0024] Figure 2 It is a structural schematic diagram of the conveying device in the present invention;

[0025] Figure 3 It is a schematic diagram of the installation structure of the rubber wheel in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the earth-breaking mechanism in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of each device on the trailer of the present invention;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure after removing the receiving tray;

[0029] Figure 7 It is a partial structural schematic diagram of the root removal device in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the leaf removal device in the present invention;

[0031] Fig. 9 It is a structural schematic diagram of the bundling device in the present invention;

[0032] Among them: 100, power car; 200, trailer;

[0033] 1. Conveying device; 2. Soil breaking mechanism; 3. Root removal device; 4. Leaf removal device; 5. Bundling device; 6. Binding device; 7. Inclined plate;

[0034] 10. Mounting frame; 11. Synchronous wheel; 12. Rubber wheel; 13. Conveyor belt; 14. Spring; 15. Connecting rod; 16. Grip; 17. Dropper; 21. Harvester frame; 22. Soil breaking shovel; 23. Harvesting shovel; 24. Soil breaking drive cylinder; 25. Baffle; 30. Receiving tray; 31. Round plate 1; 32. Round plate 2; 301. First round hole; 311. Root removal hole; 33. Root removal motor; 34. Toothed cutter; 35. Center axis; 351. Pulley 2; 36, driving motor 1; 361, pulley 1; 37, lifting cylinder; 38, push rod; 381, top plate; 39, synchronous belt; 40, leaf removing cylinder; 41, steering gear; 42, leaf removing claw; 50, bundling clamp; 51, bundling driving cylinder; 52, bundling frame; 53, driving motor 2; 54, rotating shaft; 55, crawler track; 56, bare rod; 57, slider; 60, tape reel; 61, roller shaft; 62, strapping cutting cylinder; 63, strapping fitting cylinder. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] See also Figure 1 As shown, a lettuce harvesting, rooting, leafing and packaging machine includes a power cart 100, a trailer 200, a conveying device 1, a rooting device 3, a leafing device 4 and a bundling device 5. The trailer 200 is connected to the rear side of the power cart 100 by unhooking, the conveying device 1 is installed on the power cart 100, and the rooting device 3, the leafing device 4 and the bundling device 5 are installed on the trailer 200.

[0037] In this example, the conveying device 1 includes a pair of mounting frames 10 mounted on a power trolley 100, see Figure 2 As shown, the two mounting frames 10 are arranged from front to back and upwardly inclined, and each mounting frame 10 is provided with a rubber wheel 12, a synchronous wheel 11 and a conveyor belt 13. There are two synchronous wheels 11, which are respectively installed on the front and rear sides of the mounting frame 10, and there are multiple rubber wheels 12, which are arranged between the two synchronous wheels 11 along the length direction of the mounting frame 10. The conveyor belt 13 is tensioned on the two synchronous wheels 11, and each rubber wheel 12 is installed on the mounting frame 10 through a spring 14 and a connecting rod 15. Figure 3 As shown, one end of the connecting rod 15 is movably mounted on the mounting frame 10 through a nut, one end of the spring 14 is fixedly mounted on the mounting frame 10, and the other end is connected to the other end of the connecting rod 15, and a groove extending along the length direction thereof is provided on the connecting rod 15, and the rubber wheel 12 is mounted on the connecting rod 15 and can be slidably arranged along the groove, and a plurality of grippers 16 are evenly spaced on the outer surface of the conveyor belt 13, and the cross section of the grippers 16 is semicircular, and the grippers 16 on the two mounting frames 10 correspond one to one in number and position, a soil breaking mechanism 2 is installed on the front end portion of the mounting frame 10, and a dropper 17 is installed between the rear sides of the two mounting frames 10.

[0038] The synchronous wheels 11 on each mounting frame 10 are a driving wheel and a driven wheel. A synchronous driving motor (not shown in the figure) is installed at the bottom of the driving wheel to drive the driving wheel to rotate, thereby driving the conveyor belt 13 to operate. The conveyor belts 13 on the two mounting frames 10 move towards each other, so that the grippers 16 on the two mounting frames 10 cooperate with each other to embrace the lettuce and transport it. In this example, the rubber wheel 12 is installed on the mounting frame 10 through a spring 14 and a connecting rod 15, so that the distance between the two corresponding grippers 16 on the two mounting frames 10 has a certain elasticity, which can be used to grab lettuces of different sizes and has strong practicality.

[0039] In this example, see Figure 4As shown, the soil-breaking mechanism 2 includes a harvester frame 21, a soil-breaking shovel 22, a harvesting shovel 23 and a soil-breaking driving cylinder 24. The upper end of the harvester frame 21 is hingedly mounted on the front end of the mounting frame 10, and the lower end is a free end. There are two soil-breaking shovels 22, which are symmetrically mounted on the harvester frame 21 along the left and right directions. There are also two harvesting shovels 23, which are respectively located above the two soil-breaking shovels 22. The soil-breaking driving cylinder 24 is mounted on the power trolley 100, and its output end is connected to the rear end of the harvester frame 21. The harvester frame 21 is driven by the soil-breaking driving cylinder 24 to drive the soil-breaking shovel 22 and the harvesting shovel 23 to turn up and down. The two harvesting shovels 23 are arranged in mirror symmetry. A baffle 25 is arranged on the front end of each harvesting shovel 23, and the baffle 25 is arranged perpendicular to the harvesting shovel 23. The baffle 25 prevents the dug lettuce from falling from the front end of the harvesting shovel 23.

[0040] According to the needs, the soil-breaking driving cylinder 24 is driven to move, driving the soil-breaking shovel 22 to flip up and down, loosening the soil around the lettuce, and at the same time, the lettuce is pulled out by flipping the harvesting shovel 23 up and down. The two harvesting shovels 23 cooperate with each other, and the surface is an arc surface. There is a gap between the two harvesting shovels 23, so that the soil on the lettuce falls from the gap, and then the lettuce is embraced by the two grippers 16 that cooperate with each other on the mounting frame 10, and transported upward, and dropped into the dropper 17 on the top of the mounting frame 10 for the next operation. Here, the soil-breaking mechanism 2 uses the soil-breaking driving cylinder 24 and the harvesting frame 21 to flip up and down to drive the soil-breaking shovel 22 and the harvesting shovel 23 to move, which can realize the turning of lettuces at different planting depths, and has strong adaptability.

[0041] In this example, the root removal device 3 is installed on the trailer frame, see Figure 5 , 6As shown, it includes a receiving tray 30, a circular plate 1 31 and a circular plate 2 32 arranged in sequence from top to bottom. The surface of the receiving tray 30 is provided with a plurality of first circular holes 301 evenly spaced along the same circumferential direction, and a retaining ring is provided on the circumferential surface of the lower end. The receiving tray 30 can be rotatably arranged around its own axis. The circular plate 1 31 is provided with a plurality of circular holes, and the plurality of circular holes correspond to the first circular holes 301 in number and position. One of the plurality of circular holes is a root removal hole 311, and the rest are second circular holes (not shown in the figure). The circular plate 2 32 can be raised and lowered in the up and down directions, and a notch is provided on the circular plate 2 32. , and is also provided with a mandrel 38 corresponding to the second circular hole in number and position, the bottom end of the mandrel 38 is fixedly mounted on the second circular plate 32, the top end passes through the second circular hole upward, and a top plate 381 is provided on the top end of the mandrel 38, the top plate 381 is circular, and its size is smaller than the first circular hole 301, the root removal device 3 also includes a root removal motor 33 and a toothed cutter 34, the root removal motor 33 is mounted on the frame and is located in the notch of the second circular plate 32, the output end of the root removal motor 33 is vertically upward, and the toothed cutter 34 is mounted on the output end of the root removal motor 33 and corresponds to the position of the root removal hole 311. The position of the material removal port of the dropper 17 corresponds to the position of the first circular hole 301 and the position of the root removal hole 311 on the receiving tray 30.

[0042] In addition, the root removal device 3 includes a central shaft 35 installed on the trailer frame and a driving motor 36 for driving the central shaft 35 to rotate. The central shaft 35 passes through the centers of the circular plate 2 32, the circular plate 1 31, and the receiving tray 30 from bottom to top. The central shaft 35 drives the receiving tray 30 to rotate around its own axis. A pulley 1 361 is provided on the output end of the driving motor 36, and a pulley 2 351 is provided on the central shaft 35. The pulley 1 361 and the pulley 2 351 are connected by a synchronous belt 39.

[0043] The root removal device 3 also includes a lifting cylinder 37 installed on the trailer frame, the output end of the lifting cylinder 37 is fixedly connected to the circular plate 2 32, and the circular plate 2 32 is driven to rise and fall by the lifting cylinder 37. There are two lifting cylinders 37, which are symmetrically installed below the circular plate 2 32. By setting two lifting cylinders 37, the circular plate 2 32 can be raised and lowered smoothly.

[0044] The specific root removal operations are as follows:

[0045] The lettuces in the dropper 17 fall into the first circular hole 301 of the receiving tray 30 corresponding to the root removal hole 311, and then the root removal motor 33 is driven to drive the top toothed cutter 34 to rotate, and the part of the lettuce protruding from the root removal hole 311 is removed, and then the central shaft 35 is driven to rotate by the driving motor 1 36 to receive the next lettuce. The previous lettuce that has been rooted is removed by the leaf removal device 4.

[0046] Here, see Figure 7 As shown, the leaf removing device 4 includes a leaf removing cylinder 40, a servo 41 and a leaf removing claw 42. The leaf removing cylinder 40 is installed on the trailer frame. The output shaft of the leaf removing cylinder 40 extends upward in the vertical direction to the top of the receiving tray 30. The servo 41 is installed at the end of the output shaft of the leaf removing cylinder 40. The leaf removing claw 42 includes two semicircular clamping claws. The servo 41 is used to drive the two clamping claws to move closer to or away from each other. The position of the leaf removing claw 42 corresponds to the position of one of the first circular holes 301 on the receiving tray 30.

[0047] The leaf removal operation is as follows:

[0048] The rootless lettuce is rotated to the leaf removal claws 42 by the receiving tray 30, and the two leaf removal claws 42 are driven by the steering gear 41 to tighten and grasp the lettuce leaves, and then the leaf removal cylinder 40 is lifted upward to complete the leaf removal operation. The leaf removal process is convenient and fast.

[0049] After the first circular hole 301 on the receiving tray 30 is full and the rooting and leaf removal operations are completed, the circular plate 32 is driven to be lifted upward by the lifting cylinder 37, and the push rod 38 on the circular plate 32 drives the top plate 381 to rise, and the top plate 381 passes through the first circular hole 301 to push out the lettuce stuck in the first circular hole 301, and then it is bundled by the bundling device 5.

[0050] In this example, see Figure 8 As shown, the bundling device 5 includes a pair of symmetrical bundling clamps 50, and the two bundling clamps 50 can be installed above the receiving tray 30 close to or far from each other. The bundling device 5 also includes a strapping device 6 installed on the trailer frame and located on the upper side of the receiving tray 30. After the two bundling clamps 50 embrace the lettuce after the roots and leaves are removed, the lettuce is bundled through the adhesive tape output by the strapping device 6. In this example, the bundling clamps 50 are made of flexible material, and the two bundling clamps 50 are composed of mutually staggered clamping teeth.

[0051] An inclined plate 7 is installed on one side surface of the trailer 200. The bundling device 5 includes a bundling frame 52 that is slidably installed on the trailer 200. A pair of symmetrical bundling drive cylinders 51 are installed on the top of the bundling frame 52. Two bundling clamps 50 are respectively installed on the output ends of the two bundling drive cylinders 51. The lettuces after bundling are clamped by the bundling clamps 50, and then the bundling frame 52 slides along the trailer frame to the inclined plate 7, and the bundling clamps 50 are released, so that the bundled lettuces are transported to the collecting device along the inclined plate 7.

[0052] In addition, see Figure 8As shown, the strapping device 5 also includes a second drive motor 53, a rotating shaft 54 ​​and a light rod 56 installed on the trailer frame. The second drive motor 53 and the rotating shaft 54 ​​are respectively installed on the left and right sides of the trailer frame. A track 55 is installed between the output shaft of the second drive motor 53 and the rotating shaft 54. The track 55 is fixedly connected to the strapping frame 52. There are two light rods 56, which are respectively installed on the trailer frame and located on both sides of the track 55. A slider 57 is fixedly provided at the bottom of the strapping frame 52, which is matched with the light rod 56 and can slide along the length extension direction of the light rod 56.

[0053] In this example, the strapping device 6 is installed together with one of the strapping drive cylinders 51. The strapping device 6 includes a cover shell and two rollers 61 installed in the cover shell. The two rollers 61 are arranged at intervals, one is used to install the tape reel 60, and the other is used to tension the tape; the strapping device 6 also includes a strap cutting cylinder 62 and a strap fitting cylinder 63 installed in the cover shell. One end of the tape on the tape reel 60 is connected to the output end of the strap fitting cylinder 63. When strapping is required, the output end of the strap fitting cylinder 62 extends forward to abut the tape on the lettuce. Through the rotation of the receiving tray 30, the tape is used to wrap around the lettuce. After strapping is completed, the output end of the strap cutting cylinder 62 extends out, and a cutting knife is provided on the output end of the strap cutting cylinder 62. The cutting knife is used to cut the tape to complete the strapping.

[0054] The bundling process is as follows:

[0055] After the lettuces are separated from the first circular hole 301, the two bundling clamps 50 are driven by the bundling driving cylinder 51 to move closer to each other to collect the multiple lettuces, and then the tape fitting cylinder 63 in the tape device 6 is actuated to push the tape out from the output end so that it adheres to the lettuce, and then the two bundling clamps 50 are separated by the bundling driving cylinder 51, and the central shaft 35 is driven to rotate by the driving motor 36 to rotate the receiving tray 30. As the receiving tray 30 rotates, the tape bundles the lettuces.

[0056] After bundling is completed, the tape is cut off by the cutting knife on the output end of the strap cutting cylinder 62, and the two strapping clamps 50 are driven to tighten by the strapping driving cylinder 51 again to hold the lettuce tightly, and then the driving motor 2 53 is driven to drive the crawler 55 to rotate, so that the strapping frame 52 slides toward the inclined plate 7. When it slides above the inclined plate 7, the strapping clamp 50 is released, and the bundled lettuce falls on the inclined plate 7 and slides into the collecting device along the inclined plate 7 for collection.

[0057] The whole device is compact and highly automated, realizing the integrated operation of harvesting, root removal, leaf removal and bundling.

[0058] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A lettuce harvesting, root removal and leaf packaging integrated machine, characterized in that: The utility model comprises a power trolley, a trailer, a conveying device, a rooting device, a leaf removing device and a bundling device. The trailer is connected to the rear side of the power trolley by unhooking. The conveying device is installed on the power trolley. The rooting device, the leaf removing device and the bundling device are installed on the trailer. The conveying device comprises a pair of mounting frames inclined from front to rear and upward. Each mounting frame is provided with a rubber wheel, a synchronous wheel and a conveyor belt. There are two synchronous wheels, which are respectively installed on the front and rear sides of the mounting frame. There are multiple rubber wheels, which are arranged between two synchronous wheels at intervals along the length direction of the mounting frame. The conveyor belt is tensioned between two synchronous wheels. On the synchronous wheel, each of the rubber wheels is installed on the mounting frame through a spring and a connecting rod, one end of the connecting rod is movably installed on the mounting frame through a nut, one end of the spring is fixedly installed on the mounting frame, and the other end is connected to the other end of the connecting rod, and a groove extending along the length direction of the connecting rod is provided on the connecting rod, and the rubber wheel is installed on the connecting rod and can be slidably arranged along the groove, and a plurality of grippers are evenly spaced on the outer side of the conveyor belt, and the cross section of the grippers is semicircular, and the grippers on the two mounting frames correspond to each other in number and position, and a gripper is installed on the front end of the mounting frame. It is equipped with a soil-breaking mechanism, and a dropper is installed between the rear sides of the two mounting frames. The root removal device is installed on the trailer frame, including a receiving tray, a circular plate one and a circular plate two arranged in sequence from top to bottom. The surface of the receiving tray is provided with a plurality of first circular holes evenly spaced along the same circumferential direction, and a retaining ring is provided on the circumferential portion of the lower end. The receiving tray can be rotated around its own axial centerline direction, and the circular plate one is provided with a plurality of circular holes, which correspond to the first circular holes in number and position. One of the plurality of circular holes is a root removal hole, and the rest are second circular holes. The circular plate two can be raised and lowered in the up and down directions. A notch is provided on the circular plate 2, and a top rod corresponding to the second circular hole in number and position is arranged on the surface of the circular plate 2. The bottom end of the top rod is fixedly mounted on the circular plate 2, and the top end passes through the second circular hole upward, and a top plate is arranged on the top end of the top rod. The top plate is circular and its size is smaller than the first circular hole. The rooting device also includes a rooting motor and a toothed cutter. The rooting motor is mounted on the frame and is located in the notch of the circular plate 2. The output end of the rooting motor is arranged vertically upward, and the toothed cutter is mounted on the output end of the rooting motor and corresponds to the position of the rooting hole.

2. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 1, characterized in that: The soil-breaking mechanism includes a harvester frame, a soil-breaking shovel, a harvesting shovel, and a soil-breaking driving cylinder. The upper end of the harvester frame is hingedly mounted on the front end of the mounting frame, and the lower end is a free end. There are two soil-breaking shovels, which are symmetrically mounted on the harvester frame along the left-right direction. There are also two harvesting shovels, which are respectively located above the two soil-breaking shovels. The soil-breaking driving cylinder is mounted on a power trolley, and its output end is connected to the rear end of the harvester frame. The harvester frame is driven by the soil-breaking driving cylinder to drive the soil-breaking shovel and the harvesting shovel to flip up and down. The two harvesting shovels are arranged in mirror symmetry, and a baffle is arranged on the front end of each harvesting shovel, and the baffle is arranged perpendicular to the harvesting shovel.

3. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 1, characterized in that: The root removal device includes a central shaft installed on the trailer frame and a driving motor 1 for driving the central shaft to rotate. The central shaft passes through the center of the circular plate 2, the circular plate 1, and the receiving tray from bottom to top. The central shaft drives the receiving tray to rotate around its own axis. The output end of the driving motor 1 is provided with a pulley 1, and the central shaft is provided with a pulley 2. The pulley 1 and the pulley 2 are connected by a synchronous belt.

4. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 1, characterized in that: The root removal device also includes a lifting cylinder installed on the trailer frame, the output end of the lifting cylinder is fixedly connected to the circular plate 2, and the circular plate 2 is driven to rise and fall by the lifting cylinder. There are two lifting cylinders, which are symmetrically installed below the circular plate 2.

5. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 1, characterized in that: The leaf removing device includes a leaf removing cylinder, a servo and a leaf removing claw. The leaf removing cylinder is installed on a trailer frame. The output shaft of the leaf removing cylinder extends upward in a vertical direction to above a receiving tray. The servo is installed at the end of the output shaft of the leaf removing cylinder. The leaf removing claw includes two semicircular clamping jaws. The servo is used to drive the two clamping jaws to move closer to or away from each other. The position of the leaf removing claw corresponds to the position of one of the first circular holes on the receiving tray.

6. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 1, characterized in that: The bundling device includes a pair of symmetrical bundling clamps, which can be installed above the receiving tray close to or far away from each other. The bundling device also includes a strapping device installed on the trailer frame and located on the upper side of the receiving tray. When the two bundling clamps embrace the lettuce after the leaves are removed from the roots, the lettuce is bundled through the strapping device outputting tape.

7. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 6, characterized in that: An inclined plate is installed on one side surface of the trailer, and the bundling device includes a bundling frame slidably installed on the trailer, a pair of symmetrical bundling drive cylinders are installed on the top of the bundling frame, and two bundling clamps are respectively installed on the output ends of the two bundling drive cylinders. The bundling lettuces are clamped by the bundling clamps, and then the bundling frame slides along the trailer frame to the inclined plate, and the bundling clamps are released, so that the bundled lettuces are transported to the collecting device along the inclined plate.

8. The all-in-one machine for harvesting and removing leaves of lettuce and packaging according to claim 7, characterized in that: The bundling device includes a second drive motor installed on the trailer frame, a rotating shaft and a light rod, the second drive motor and the rotating shaft are respectively installed on the left and right sides of the trailer frame, a track is installed between the output shaft of the second drive motor and the rotating shaft, the track is fixedly connected to the bundling frame, there are two light rods, which are respectively installed on the trailer frame and located on both sides of the track, and the bottom of the bundling frame is fixedly provided with a slider which is matched and sleeved on the light rod and can slide along the length extension direction of the light rod.

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