A seedling pulling machine

Abstract

This invention belongs to the field of agricultural machinery and equipment technology, and provides a rice seedling puller, including a frame, on which a feeding box, a crushing box, and a power box are mounted. Rotating cutter rollers, driven by a first cutter roller drive device and a second cutter roller drive device respectively, are rotatably mounted inside the crushing box. Fixed cutters are also fixedly mounted inside the crushing box. A grinding mouth and an in-situ grinding device are provided at the top of the crushing box. The in-situ grinding device includes a grinding frame, with an open cover plate slidably mounted at the bottom of the grinding frame. A sliding mounting seat driven by a grinding drive device is slidably mounted inside the grinding frame. A grinding feed component is threaded onto the sliding mounting seat, and a grinding stone is fixedly mounted on the grinding feed component. A feed adjustment component for compensating for grinding stone wear is also provided inside the grinding frame. This invention enables in-situ, non-disassembly grinding of each moving cutter, greatly simplifying maintenance procedures, shortening downtime, reducing equipment operation and maintenance costs, and meeting the needs of large-scale, high-efficiency farming.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery and equipment technology, and in particular to a rice seedling puller. Background Technology

[0002] Fruit and vegetable seedlings mainly refer to the discarded plant remains such as vines, stems, and branches left after harvesting fruits and vegetables like tomatoes, cucumbers, peppers, eggplants, and potatoes. They are a major agricultural waste generated in both greenhouse and open-field fruit and vegetable cultivation. Unlike the hard stems of traditional grain crops, fruit and vegetable seedlings are generally characterized by high water content, strong toughness, flexible fibers, abundant foliage, and a messy appearance. They degrade slowly naturally, and if directly piled up in the field, they easily breed bacteria and insect eggs, inducing pests and diseases in subsequent crops. Furthermore, they occupy arable land, pose fire safety hazards, and cause serious agricultural non-point source pollution.

[0003] A seedling puller is an agricultural machine mainly used for processing fruit and vegetable seedlings. It is widely used in various agricultural scenarios and is mainly used for crushing and processing waste vines, stems, branches and other plant debris after the harvest of fruit and vegetable crops. It can efficiently complete the crushing and returning of waste seedlings and plant debris to the field, effectively reducing the intensity of manual labor and improving the efficiency of field cleaning. It is now widely used in the field finishing operations of cash crops such as vegetables and fruits.

[0004] Chinese invention patent ZL202510947977.2 discloses a seedling puller, including a frame with a tracked walking mechanism at the bottom. The frame houses a power box, a feeding box, and a crushing box. The feeding box has a protective frame and an upper protective plate at the feeding inlet. A feeding support plate is installed inside the feeding box. Below the feeding support plate is a material-supporting roller driven by a first drive device and detachably mounted to the bottom of the feeding box using a quick-release mechanism. A feeding roller driven by a second drive device is rotatably mounted above the feeding support plate. A correction bracket is located below the feeding roller, and a correction locking mechanism is provided between the correction bracket and the feeding box. The crushing box contains a pressing and feeding mechanism and a material crushing mechanism, and outside the crushing box is a throwing mechanism. While this seedling puller can crush fruit and vegetable seedlings, it has been found to have the following drawbacks during use: (1) It does not have the function of in-situ sharpening. For dull moving blades, the equipment is usually shut down and all moving blades are disassembled, sharpened, reassembled and adjusted by the staff. The process is complicated, the operation is cumbersome and inconvenient, time-consuming and labor-intensive, the tool maintenance efficiency is extremely low, and the maintenance cost of the equipment is greatly increased. Moreover, due to the long downtime maintenance, it is difficult to meet the needs of large-scale and efficient field fruit and vegetable seedling cleaning operations.

[0005] (2) The lack of a feeding protection structure means that the material support roller cannot be effectively isolated and protected during equipment operation. The material support roller is completely exposed, and there is no effective isolation and protection for the high-speed rotating roller and the seedling conveyor belt. This poses a high safety risk. Furthermore, when the material support roller is fully wrapped with the seedling conveyor belt and needs to be disassembled, the material support roller is high off the ground and has a large weight. There is no supporting protection structure during the disassembly process, which may pose a safety hazard of falling and injuring people.

[0006] (3) During operation, problems such as material jamming and blockage of the blade are likely to occur. The feeding, cutting and crushing effects of fruit and vegetable seedlings still need to be further improved. When material jamming occurs, the opening operation of the crushing box is complicated and laborious, making it difficult to clean the blockage, inspect the inside of the box and perform daily maintenance. This makes operation inconvenient and seriously affects the efficiency of the equipment. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art as mentioned above, in-depth research was conducted, and after a great deal of creative work, the present invention was completed.

[0008] Specifically, the technical problem to be solved by the present invention is to provide a seedling pulling machine to solve the technical problems of current seedling pulling machines, which lack in-situ blade sharpening function, lack feeding protection structure, and are prone to material jamming, material blockage and blade malfunction during operation, resulting in poor feeding, cutting and crushing effect on fruit and vegetable seedlings.

[0009] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A rice seedling puller includes a frame, a tracked walking mechanism at the bottom of the frame, and a feeding box, a crushing box and a power box fixedly installed on the frame, wherein the feeding box is located at the feed end of the crushing box; A rotating cutter roller is rotatably installed inside the crushing chamber. The outer circumference of the rotating cutter roller has several moving cutters arranged in a circumferential direction. A fixed cutter that cooperates with the moving cutters is also fixedly installed inside the crushing chamber. A first cutter roller drive device is provided inside the power box to drive the rotating cutter roller to rotate forward. A second cutter roller drive device is provided on the frame to drive the rotating cutter roller to rotate backward. The top of the crushing chamber is provided with a grinding mouth along the axial direction of the rotating cutter roller. The grinding mouth is correspondingly arranged with the rotating cutter roller. The top of the crushing chamber is provided with an in-situ grinding device at the position corresponding to the grinding mouth to realize the grinding of the moving blade. The in-situ sharpening device includes a sharpening frame fixedly installed on the crushing chamber. An opening cover plate for sealing the sharpening nozzle is slidably installed at the bottom of the sharpening frame. A sliding mounting seat driven by a sharpening drive device is slidably installed inside the sharpening frame along the length direction of the sharpening nozzle. A sharpening feed component is threaded onto the sliding mounting seat. A sharpening stone corresponding to the sharpening nozzle is fixedly installed on the sharpening feed component. The sharpening frame also has a feed adjustment component for compensating for wear of the sharpening stone.

[0010] As an improved technical solution, a feeding baffle is fixedly installed inside the feeding box. A material belt reel driven by a reel drive device is provided below the feeding baffle. A feeding roller driven by a feeding drive device is rotatably installed above the feeding baffle. There is a feeding gap between the feeding roller and the feeding baffle for material to pass through. The feeding box is provided with a roller cover at the corresponding position of the material belt roller. The roller cover is rotatably mounted on the feeding box in the direction surrounding the material belt roller. A cover locking component and a slow descent traction component are provided between the roller cover and the feeding box. The top of the roll cover is also provided with a correction bracket and a non-powered auxiliary roller. The non-powered auxiliary roller is rotatably mounted on the roll cover and is located between the correction bracket and the material roll. When the roll cover is in the protective state, the non-powered auxiliary roller is located close to the feed partition. When the roll cover is in the open state, the roll cover is located below the material roll.

[0011] As an improved technical solution, the reel drive device includes a first hydraulic motor fixedly installed at the bottom of one end of the feeding box, a first reel pin installed on the output shaft of the first hydraulic motor, and a second reel pin rotatably installed at the bottom of the other end of the feeding box via a reel quick-release assembly. The material reel is located between the first reel pin and the second reel pin, and when in the feeding state, the second reel pin is correspondingly set with the first reel pin, and the material reel is clamped between the first reel pin and the second reel pin. The quick-release assembly of the reel includes a one-way outward flap, a pressing plate, and a fixing block. One end of the one-way outward flap is hinged to the feeding box. The second reel ejector pin is rotatably mounted on the other end of the one-way outward flap via an ejector pin bearing seat. One end of the pressing plate is rotatably connected to one side of the one-way outward flap, and one end of the pressing plate has an integrally formed actuating part. The fixing block is fixedly mounted on the feeding box and is located near the other side of the one-way outward flap. The fixing block has a slot for the other end of the pressing plate to engage. The feeding roller is rotatably mounted on the feeding box. The feeding drive device includes a second hydraulic motor fixedly mounted on the feeding box. A first drive sprocket is mounted on the output shaft of the second hydraulic motor. A first driven sprocket is mounted on one end of the roller shaft of the feeding roller. The first driven sprocket is connected to the first drive sprocket via a first transmission chain.

[0012] As an improved technical solution, both ends of the reel cover are rotatably connected to the feeding box body by rotary bearings, and the reel cover locking assembly is provided between both ends of the reel cover and the feeding box body. The protective cover locking assembly includes a hook shaft, a hook, and a limiting shaft. The hook shaft is fixedly installed on the feeding box. The hook is rotatably installed on the reel cover using a rotating shaft and is correspondingly set with the hook shaft. The mounting end of the hook has a flip-limiting groove. The limiting shaft is fixedly installed on the reel cover and abuts against the groove wall of the flip-limiting groove. When in the locked state, the hook end of the hook is hooked on the hook shaft. The slow-descent traction assembly is provided in two sets, and the two ends of the roller cover are respectively connected to the feeding box via the slow-descent traction assembly; The descent traction assembly includes an arc-shaped rope winding seat, a steel wire rope, a steering pulley, and a tension spring. The arc-shaped rope winding seat is fixedly installed at the end of the reel cover, and includes an integrally formed traction connection end and an arc-shaped guide section. The traction connection end is located at the end of the arc-shaped guide section. A limiting rope winding groove for winding and storing the steel wire rope is formed between the arc-shaped guide section and the reel cover. One end of the steel wire rope is connected to the traction connection end. The steering pulley is rotatably installed at the corner position of the feeding box. The other end of the steel wire rope passes around the steering pulley and is connected to the feeding box through the tension spring.

[0013] As an improved technical solution, the crushing box includes a feeding box, a lower box and an upper box. The feeding box and the lower box are both fixedly installed on the frame. One end of the feeding box is connected to the feeding box, and the other end of the feeding box is connected to the lower box. The feeding box is provided with a feeding conveying mechanism driven by a feeding drive device. The upper box is hinged to the lower box, and the upper box and the lower box form a crushing chamber. The rotating cutter roller is rotatably mounted on the lower box and located in the crushing chamber. The top of the upper box has a discharge port that communicates with the crushing chamber, and the top of the upper box has a throwing mechanism corresponding to its discharge port. An opening and closing hydraulic cylinder is also provided between the upper box and the lower box. Two opening and closing hydraulic cylinders are provided, and the two opening and closing hydraulic cylinders are respectively located on the two outer sides of the crushing box. The cylinder body end of the opening and closing hydraulic cylinder is hinged to the lower box, and the piston rod end of the opening and closing hydraulic cylinder is hinged to the upper box. A locking connecting plate is also provided between the top of the upper box and the top of the feeding box. The two ends of the locking connecting plate are respectively detachably fixedly connected to the feeding box and the upper box.

[0014] As an improved technical solution, the feeding and conveying mechanism includes an upper material conveying roller and a lower material conveying roller. The upper material conveying roller is rotatably mounted on the top of the feeding box, and the lower material conveying roller is rotatably mounted on the bottom of the feeding box. Two lower material conveying rollers are arranged side by side, and the upper material conveying roller is located directly above the two lower material conveying rollers. A feeding channel is formed between the upper material conveying roller and the lower material conveying roller. When in working condition, under the drive of the feeding drive device, the upper material conveying roller and the lower material conveying roller rotate in opposite directions. The feeding drive device includes a third hydraulic motor fixedly installed on the feeding box body. The third hydraulic motor is located on one side of the feeding box body, and a transmission gear set is provided on the other side of the feeding box body. The output shaft of the third hydraulic motor is connected to one end of the roller shaft of one of the lower material feeding rollers via a coupling. The upper material feeding roller and the two lower material feeding rollers are connected via the transmission gear set. The transmission gear set includes a driving gear, a first driven gear, a first idler gear, a second idler gear, and a second driven gear. The driving gear is mounted on the shaft of one of the lower material conveying rollers, and the first driven gear is mounted on the shaft of the other lower material conveying roller. The first idler gear and the second idler gear are both rotatably mounted on the feed box. The first idler gear is located between the driving gear and the first driven gear, and meshes with both the driving gear and the first driven gear. The second driven gear is mounted on the shaft of the upper material conveying roller, and the second idler gear is located between the first idler gear and the second driven gear, and meshes with both the first idler gear and the second driven gear. A gear cover plate covering the transmission gear set is also fixedly installed on the feed box body.

[0015] As an improved technical solution, the rotating cutter roller includes a cutter roller frame rotatably installed in the crushing chamber, and a plurality of inclined moving cutters are fixedly installed on the cutter roller frame. When the rotating cutter roller is in the forward rotation state, the plurality of moving cutters sequentially form a shearing engagement with the fixed cutter. The cutter roller frame includes a connecting central shaft, on which a plurality of star-shaped cutter discs are fixedly mounted. The plurality of star-shaped cutter discs are evenly arranged along the axial direction of the connecting central shaft, and there is an installation gap between adjacent star-shaped cutter discs. The outer periphery of each star-shaped cutter disc has a plurality of integrally formed toothed lugs. The plurality of toothed lugs are evenly arranged along the circumference of the star-shaped cutter disc, and the toothed lugs of adjacent star-shaped cutter discs are staggered. A cutter body mounting plate is fixedly mounted between the toothed lugs of two adjacent star-shaped cutter discs, and the moving cutters are respectively fixedly mounted on the cutter body mounting plate. The connecting shaft is fixedly connected to the main cutter shaft, and the rotating cutter roller is rotatably mounted on the crushing box through the main cutter shaft. One end of the main cutter shaft extends out of the crushing box to form a power connection end. The first cutter roller drive device includes a diesel engine fixedly installed in the power box, the output shaft of the diesel engine extends to the outside of the power box and is equipped with a drive pulley, the power connection end of the main cutter shaft is equipped with a driven pulley, and the driven pulley is connected to the drive pulley through a transmission belt; The second cutter roller drive device includes a fourth hydraulic motor fixedly mounted on the frame. A second drive sprocket is mounted on the output shaft of the fourth hydraulic motor. A second driven sprocket is also mounted on the power connection end of the main cutter shaft through an electromagnetic clutch. The second driven sprocket is connected to the second drive sprocket through a second transmission chain.

[0016] As an improved technical solution, the top of the upper housing is provided with the grinding hole, the grinding frame is fixedly installed on the upper housing, and a dust cover is hinged to the top of the grinding frame; The bottom of the grinding frame has two corresponding cover plate mounting parts. Each cover plate mounting part has a strip-shaped guide hole along the direction close to / away from the grinding edge. The open cover plate is located between the two cover plate mounting parts, and both ends of the open cover plate are fixedly mounted with guide posts that are slidably disposed in the strip-shaped guide holes. The open cover plate is slidably mounted on the cover plate mounting part by means of the guide posts, and the ends of the guide posts pass through the strip-shaped guide holes and are threaded with locking nuts. A sliding actuating seat is also fixedly mounted on the open cover plate. When not in the grinding state, the open cover plate closes and covers the grinding edge.

[0017] As an improved technical solution, the sharpening drive device includes a bidirectional hydraulic cylinder fixedly mounted on the sharpening frame, and a doubling transmission mechanism is provided between the bidirectional hydraulic cylinder and the sliding mounting base. The bidirectional hydraulic cylinder is connected to the sliding mounting base through the doubling transmission mechanism. The doubling transmission mechanism includes doubling sprockets and doubling chains. There are two doubling sprockets, which are rotatably mounted on both ends of the cylinder body of the bidirectional hydraulic cylinder and are axially aligned with the bidirectional hydraulic cylinder. The doubling chain is wound around the two doubling sprockets and meshes with them. The upper section of the doubling chain is fixedly connected to the middle position of the grinding frame body via a first connecting plate, and the lower section of the doubling chain is fixedly connected to the sliding mounting base via a second connecting plate.

[0018] As an improved technical solution, the grinding tool feed component includes an integrally formed mounting cylinder and a feed ratchet. The mounting cylinder is threaded onto the sliding mounting seat, and the feed ratchet is located at the top of the mounting cylinder and is coaxially arranged with the mounting cylinder. The feed adjustment assembly includes a ratchet positioning plate for limiting and fixing the feed ratchet and a ratchet shifter for rotating the feed ratchet and adjusting the feed of the whetstone. The ratchet positioning plate is fixedly installed on the sliding mounting base and abuts against the teeth of the feed ratchet. The ratchet shifter is fixedly installed at one end of the sharpening frame, and one end of the sharpening frame is provided with an initial sharpening position. When the sliding mounting base is located at the initial sharpening position, the ratchet shifter abuts against the teeth of the feed ratchet.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are: This rice seedling puller adopts a modular integrated structure design, realizing multi-process collaborative operation. During operation, the material belt conveyor belt is automatically wound up by a reel drive device. The fruit and vegetable seedlings laid on the conveyor belt are fed into the crushing chamber through the feeding partition and the feeding roller driven by the feeding drive device. After entering the crushing chamber, the fruit and vegetable seedlings are pressed and conveyed by the feeding conveyor mechanism driven by the feeding drive device, automatically and continuously conveying the fruit and vegetable seedlings into the crushing chamber. The rotating cutter roller in the crushing chamber rotates at high speed under the drive of the first cutter roller drive device. After the fruit and vegetable seedlings enter the crushing chamber, they are continuously sheared and crushed by the fixed blade and the high-speed rotating cutter roller, cutting the fruit and vegetable seedlings into uniform and fine seedling fragments. The crushed material is then thrown by the centrifugal force generated by the high-speed rotation of the rotating cutter roller. The material is discharged from the material conveyor. After the material belt reel has finished winding a single seedling conveyor belt, the reel drive device stops working. First, open the reel cover and slowly and steadily flip it down. Then, remove the material belt reel fully wound with the seedling conveyor belt, replace it with a new empty material belt reel, and then reset the reel cover. When the equipment has been operating for a long time and the moving blades are worn or dulled, resulting in a decrease in crushing effect, the equipment stops, the opening cover is opened, and then the second cutter roller drive device drives the rotating cutter roller to reverse at a low speed, so that each moving blade of the rotating cutter roller passes through the grinding station in sequence and evenly. At the same time, the grinding drive device drives the grinding stone to move back to the reset position, realizing automatic grinding of each moving blade. After grinding is completed, the grinding drive device drives the grinding stone to reset to the initial grinding position, and the opening cover is reset to seal the grinding opening. After the moving blades are ground, the seedling pulling machine can continue to work in the field.

[0020] This seedling puller enables highly efficient and automated crushing of fruit and vegetable seedlings. Through a closed feeding protection structure, a quick-opening and closing crushing chamber, a dual-mode drive design for the rotating blade roller, and the addition of an in-situ automatic blade sharpening structure, it solves the technical defects of existing equipment, such as lack of feeding protection, easy material blockage, poor crushing stability, lack of in-situ blade sharpening function, cumbersome maintenance, and insufficient safety. By adding a flip-openable roller cover with a locking component and a slow-descent traction component, it eliminates the safety hazard of a completely exposed and unprotected material roller, making feeding operations safer and more reliable, and making the disassembly and replacement of the material roller safer and smoother. The improved feeding conveyor mechanism and rotating blade roller structure enable efficient and orderly feeding and cutting of fruit and vegetable seedlings, completely improving equipment problems such as material jamming, blockage, and blade malfunction, enhancing material crushing uniformity and operational stability. At the same time, the quick-opening and closing crushing chamber structure greatly simplifies material blockage cleaning and chamber maintenance. Internal maintenance procedures; In addition, the two sets of blade roller drive devices are adapted to high-speed crushing operations and low-speed precision grinding operations respectively. Based on the structural design of automatic in-situ grinding and automatic wear compensation, the precision grinding of moving blades can be completed directly on the equipment body, realizing in-situ grinding of each moving blade without disassembly. This greatly simplifies the maintenance process of moving blades, greatly improves the grinding and maintenance efficiency and grinding quality after the moving blades are dulled, significantly shortens the equipment downtime for maintenance, reduces equipment operation and maintenance costs, and is suitable for high-frequency blade maintenance operations in the field, meeting the needs of large-scale and efficient farming.

[0021] In summary, this rice seedling puller is highly integrated, compact in structure, and easy to operate and maintain. It can effectively meet the needs of large-scale and efficient field seedling cleaning operations, significantly improve the efficiency of fruit and vegetable residue crushing and returning to the field, avoid the breeding of pests and diseases and agricultural non-point source pollution caused by the accumulation of residues in the field, and greatly improve the equipment's safety, operational stability, and ease of operation and maintenance, making it highly practical. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a three-dimensional structural diagram of the rice-pulling machine of the present invention; Figure 2 This is another three-dimensional structural schematic diagram of the rice-pulling machine of the present invention; Figure 3 This is a three-dimensional structural diagram of the feeding box and crushing box of the present invention being installed on the frame; Figure 4This is another three-dimensional structural diagram of the feeding box and crushing box of the present invention being installed together on the frame; Figure 5 This is a three-dimensional structural diagram of the feed box body portion of the present invention with the roller cover in a protected state; Figure 6 This is a three-dimensional structural diagram of the feed box body with the roller cover in the open state. Figure 7 This is another three-dimensional structural diagram of the feed box body with the roller cover in the open state. Figure 8 This is a three-dimensional structural diagram of the disassembled material belt reel of the feeding box body of the present invention. Figure 9 This is a three-dimensional structural diagram of the feeding box part of the present invention; Figure 10 This is another three-dimensional structural diagram of the feeding box part of the present invention; Figure 11 This is a cross-sectional structural diagram of the feeding box portion of the present invention; Figure 12 This is another cross-sectional view of the feeding box portion of the present invention; Figure 13 This is a schematic diagram of the installation structure of the hook on the rotating shaft according to the present invention; Figure 14 This is a schematic diagram of the installation structure of the quick-release roller assembly of the present invention; Figure 15 This is a schematic diagram of another installation structure of the quick-release roller assembly of the present invention; Figure 16 This is a three-dimensional structural diagram of the installation of the reel cover and the slow-descent traction assembly of the present invention. Figure 17 This is another three-dimensional structural diagram of the installation of the reel cover and the slow-descent traction assembly of the present invention; Figure 18 This is a three-dimensional structural diagram of the crushing chamber of the present invention; Figure 19 This is another three-dimensional structural diagram of the crushing chamber part of the present invention; Figure 20 This is another three-dimensional structural diagram of the crushing chamber part of the present invention; Figure 21 This is a cross-sectional structural diagram of the crushing chamber portion of the present invention; Figure 22 This is a schematic diagram of the structure of the rotating cutter roller of the present invention being rotatably mounted on the lower housing part; Figure 23 This is a schematic diagram of the structure of the second cutter roller drive device of the present invention; Figure 24This is a schematic diagram of the installation structure of the main cutter shaft and the rotating cutter roller of the present invention; Figure 25 This is a schematic diagram of the rotating cutter roller of the present invention; Figure 26 This is a schematic diagram of the in-situ grinding device of the present invention; Figure 27 This is a three-dimensional structural diagram of the grinding frame body and its internal structure of the present invention; Figure 28 This is another three-dimensional schematic diagram of the grinding holder body and its internal structure of the present invention; Figure 29 This is a cross-sectional view of the in-situ grinding device of the present invention; Figure 30 This is a schematic diagram of the installation structure of the opening cover plate on the grinding tool holder body according to the present invention; Figure 31 This is a schematic diagram of the installation structure of the opening cover plate on the cover plate mounting part of the present invention; Figure 32 This is a schematic diagram of the mating and installation structure of the grinding drive device and the moving blade grinding part of the present invention; Figure 33 This is a three-dimensional structural diagram of the moving blade grinding part of the present invention; Figure 34 This is another three-dimensional structural diagram of the moving blade grinding part of the present invention; Figure 35 This is a schematic diagram of the structure of the grinding tool feed component of the present invention; Figure 36 This is a three-dimensional structural diagram of the power box portion of the present invention; Reference numerals: 1-Frame; 2-Crawler walking mechanism; 3-Feed box; 4-Power box; 5-Feeding partition; 6-Strip reel; 7-Feeding roller; 8-First hydraulic motor; 9-First reel ejector pin; 10-Second reel ejector pin; 11-One-way outward flip plate; 12-Crimping plate; 1201-Actuating part; 13-Fixing block; 14-Ejector pin bearing seat; 15-Second hydraulic motor; 16-First driving sprocket; 17-First driven sprocket; 18-Reel cover; 19-Correction bracket; 20-Non-powered auxiliary roller; 21-Rotary bearing; 22-Hanging shaft; 23-Rotating shaft; 24-Hook; 2401-Tilting limit groove; 25-Limiting shaft; 26-Arc-shaped rope winding seat; 27-Wire rope; 28-Steering pulley; 29-Tension spring; 30-Spring mounting seat; 31-Tensioning rod; 32-First safety door switch; 33-Feed box body; 34-Lower box body; 35-Upper box body; 36-Moving knife; 37-Fixed knife; 38-Opening / closing cylinder; 39-Locking connecting plate; 40-Second safety door switch; 41-Inspection cover plate; 42-Heavy-duty latch; 43-Third safety door switch; 44-Upper material conveying roller; 45-Lower material conveying roller; 46-Third hydraulic motor; 47-Drive gear; 48-First driven gear; 49-First idler gear; 50-Second idler gear; 51-Second driven gear; 52-Gear cover plate; 53 - Connecting central shaft; 54- Star-shaped cutter head; 5401- Toothed lug; 55- Cutter body mounting plate; 56- Pad plate; 57- Main cutter shaft; 58- Diesel engine; 59- Drive pulley; 60- Transmission belt; 61- Driven pulley; 62- Protective cover; 63- Fourth hydraulic motor; 64- Second drive sprocket; 65- Electromagnetic clutch; 66- Second driven sprocket; 67- Second transmission chain; 68- Hydraulic motor mounting base; 69- Electromagnetic clutch fixing plate; 70- Tensioner sprocket adjusting base; 71- Tensioner sprocket; 72-Sharpening holder body; 7201-Cover plate mounting part; 72011-Strip guide hole; 7202-Guide edge; 73-Open cover plate; 74-Sliding actuating seat; 75-Sliding mounting seat; 7501-Detection part; 76-Sharpening feed part; 7601-Mounting cylinder; 7602-Feed ratchet; 77-Sharpening stone; 78-Dustproof cover plate; 79-Guide post; 80-Locking nut; 81-Roller mounting plate; 82-Guide wheel; 83-Guide rail; 84-Slider; 85-Double-acting hydraulic cylinder; 86-Double-pitch sprocket; 87-Double-pitch chain; 88-First connecting plate; 89-Second connecting plate; 90-Ratchet positioning plate; 91-Ratchet lever plate; 92-Proximity switch. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0027] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0028] This invention provides a vine-pulling machine, which is mainly used for the automated cleaning and crushing of plant residues such as discarded vines, stems, and branches after the harvest of fruits and vegetables such as tomatoes, cucumbers, peppers, eggplants, and potatoes. It solves the technical defects of existing equipment, such as lack of feeding protection, easy clogging of feed, poor crushing stability, lack of in-situ sharpening function, cumbersome operation and maintenance, and insufficient safety.

[0029] like Figures 1 to 4 As shown in the figure, the present invention provides a rice seedling puller, including a frame 1, a tracked walking mechanism 2 at the bottom of the frame 1, and a feeding box 3, a crushing box, and a power box 4 fixedly installed on the frame 1. The feeding box 3 is located at the feed end of the crushing box, and the power box 4 is located on one side of the crushing box. The tracked walking mechanism 2 has the same structure as existing equipment and will not be described in detail here.

[0030] like Figure 6 , Figure 7 , Figures 9 to 11 As shown, a feeding baffle 5 is fixedly installed inside the feeding box 3. Below the feeding baffle 5 is a material belt reel 6 driven by a reel drive device. The material belt reel 6 is used to wind and collect the seedling conveyor belt, so as to realize the continuous winding of the seedling conveyor belt during operation. Above the feeding baffle 5 is a feeding roller 7 driven by a feeding drive device. There is a feeding gap between the feeding roller 7 and the feeding baffle 5 for material to pass through. The fruit and vegetable seedlings conveyed on the seedling conveyor belt enter the crushing box through the feeding gap under the guidance of the feeding roller 7.

[0031] like Figures 3 to 10 , Figure 14 and Figure 15As shown, the reel drive device includes a first hydraulic motor 8 fixedly installed at the bottom of one end of the feeding box 3. A first reel pin 9 is installed on the output shaft of the first hydraulic motor 8. A second reel pin 10 is rotatably installed at the bottom of the other end of the feeding box 3 through a reel quick-release assembly. The material belt reel 6 is located between the first reel pin 9 and the second reel pin 10. When in the feeding state, the second reel pin 10 is correspondingly set with the first reel pin 9, and the material belt reel 6 is clamped between the first reel pin 9 and the second reel pin 10. The first hydraulic motor 8 works to drive the material belt reel 6 to rotate, thereby realizing the winding of the seedling conveyor belt.

[0032] like Figure 5 , Figure 6 , Figures 8 to 10 , Figure 12 , Figure 14 and Figure 15 As shown, the quick-release assembly of the reel includes a one-way outward flap 11, a pressing plate 12, and a fixing block 13. One end of the one-way outward flap 11 is hinged to the feeding box 3 and can be flipped outward to open and close. The second reel ejector pin 10 is rotatably mounted on the other end of the one-way outward flap 11 via the ejector pin bearing seat 14. One end of the pressing plate 12 is rotatably connected to one side of the one-way outward flap 11, and one end of the pressing plate 12 has an integrally formed actuating part 1201, which is convenient for manual unlocking. The fixing block 13 is fixedly mounted on the feeding box 3 and is set near the other side of the one-way outward flap 11. The fixing block 13 has a slot for the other end of the pressing plate 12 to be engaged. When the equipment is operating normally, the pressing plate 12 is engaged in the slot of the fixed block 13, locking the one-way outward flip plate 11 to ensure that the second roll pin 10 and the first roll pin 9 can securely clamp the material roll 6. When the material roll 6 needs to be disassembled for replacement, simply move the moving part 1201 to disengage the pressing plate 12 from the slot of the fixed block 13, and the one-way outward flip plate 11 can be flipped outward. The one-way outward flip plate 11 drives the second roll pin 10 away from the material roll 6, thus quickly releasing the clamping limit on the material roll 6 and realizing the quick disassembly and replacement of the material roll 6. The quick-release assembly of the reel has a simple and compact overall structure. With the first reel pin 9 and the second reel pin 10 symmetrically arranged at both ends, it can center and clamp the material reel 6, effectively limiting the axial movement and radial vibration of the material reel 6 during operation. This effectively improves the assembly accuracy and operational stability of the material reel 6, ensuring that the material reel 6 can operate at high speed, smoothly and reliably for a long time. At the same time, it facilitates the quick disassembly and replacement of the material reel 6, making the operation fast and efficient.

[0033] like Figure 3 , Figure 5 , Figure 6 , Figures 8 to 10As shown, the feeding roller 7 is rotatably mounted on the feeding box 3. The feeding drive device includes a second hydraulic motor 15 fixedly mounted on the feeding box 3. A first drive sprocket 16 is mounted on the output shaft of the second hydraulic motor 15. A first driven sprocket 17 is mounted on one end of the roller shaft of the feeding roller 7. A first transmission chain is wound between the first driven sprocket 17 and the first drive sprocket 16. The first driven sprocket 17 is connected to the first drive sprocket 16 through the first transmission chain. When the second hydraulic motor 15 works, it drives the feeding roller 7 to rotate, thereby feeding and conveying the fruit and vegetable seedlings.

[0034] like Figure 1 , Figures 3 to 12 , Figure 16 and Figure 17 As shown, a reel cover 18 is provided on the feeding box 3 at the corresponding position of the feed belt reel 6. The reel cover 18 is rotatably mounted on the feeding box 3 in the direction surrounding the feed belt reel 6, and a cover locking component and a slow-descent traction component are provided between the reel cover 18 and the feeding box 3. During feeding operations, the reel cover 18 is located outside the feed belt reel 6, which can effectively isolate and protect the high-speed rotating feed belt reel 6 and the winding seedling conveyor belt. The cover locking component and the slow-descent traction component are matched between the reel cover 18 and the feeding box 3. The cover locking component is used to lock the position of the reel cover 18 in the working state to ensure the stability of the protection. The slow-descent traction component is used for buffering traction when the reel cover 18 is opened and lowered, so as to realize the slow and smooth flipping and lowering of the reel cover 18. The opening and closing of the reel cover 18 can be realized through the cover locking component and the slow-descent traction component.

[0035] like Figures 5 to 9 , Figure 11 , Figure 12 , Figure 16 and Figure 17As shown, the top of the roll cover 18 is also equipped with a correction bracket 19 and a non-powered auxiliary roller 20. The correction bracket 19 is slidably installed on the roll cover 18, and the roll cover 18 is threaded with positioning bolts to fix the correction bracket 19. The operator can loosen the positioning bolts to adjust the height of the correction bracket 19 according to the actual winding situation of the seedling conveyor belt. After adjustment, the positioning bolts are tightened again to fix the current adjustment position. By flexibly adjusting the correction bracket 19, a better correction effect can be achieved. The non-powered auxiliary roller 20 is rotatably installed on the roll cover 18, and the non-powered auxiliary roller 20 is located between the correction bracket 19 and the material roll 6. When the roll cover 18 is in the protective state, the non-powered auxiliary roller 20 is set close to the feed partition 5. When the roll cover 18 is in the open state, the roll cover 18 is located below the material roll 6. The correction bracket 19 is used to correct the deviation of the seedling conveyor belt and prevent it from deviating significantly. The non-powered auxiliary roller 20 can guide and transport the corrected seedling conveyor belt, optimize the material path of the seedling conveyor belt, greatly reduce the winding resistance of the seedling conveyor belt, and reduce the tension when winding the seedling conveyor belt. This ensures that the correction bracket 19 can accurately correct the deviation of the seedling conveyor belt and avoids the problems of deviation and jamming caused by excessive winding tension. This makes the winding process of the seedling conveyor belt smooth and stable, effectively reducing the power consumption and failure rate of the equipment. The correction bracket 19 and the non-powered auxiliary roller 20 ensure that the seedling conveyor belt is accurately and smoothly wound onto the material belt reel 6, and at the same time ensure that the fruit and vegetable seedlings on the seedling conveyor belt can smoothly enter the feeding gap. During operation, the seedling conveyor belt passes through the correction bracket 19 and the non-powered auxiliary roller 20 in sequence and is wound onto the material belt reel 6. The fruit and vegetable seedlings on the seedling conveyor belt are fed to the crushing box by the feeding roller 7.

[0036] like Figures 5 to 10 , Figure 12 , Figure 16 and Figure 17 As shown, both ends of the roller cover 18 are rotatably connected to the feed box 3 by rotating bearings 21, and both ends of the roller cover 18 and the feed box 3 are provided with cover locking components; the cover locking components can ensure that the roller cover 18 maintains a stable protective state. After the seedling conveyor belt on the material belt roller 6 is wound, the locking state of the roller cover 18 can be released by the cover locking components, and the roller cover 18 can be flipped down.

[0037] like Figures 5 to 10 , Figure 12 , Figure 13 , Figure 16 and Figure 17As shown, the cover locking assembly includes a hook shaft 22, a hook 24, and a limiting shaft 25. The hook shaft 22 is fixedly installed on the feed box 3. The hook 24 is rotatably installed on the reel cover 18 via a rotating shaft 23 and is correspondingly set with the hook shaft 22. The mounting end of the hook 24 has a flipping limiting groove 2401. The limiting shaft 25 is fixedly installed on the reel cover 18, and the limiting shaft 25 abuts against the groove wall of the flipping limiting groove 2401. When in the locked state, the hook end of the hook 24 is hooked onto the hook shaft 22. Through the constraint cooperation between the limiting shaft 25 and the flipping limiting groove 2401, the flipping stroke and swing range of the hook 24 can be precisely limited, completely solving the defects of traditional locking hooks 24 having no constraint after unlocking, large swing range, and easy jamming. In the working state, the hook 24 is hooked onto the hook shaft 22 to achieve reliable locking of the reel cover 18. When changing the material reel 6, the flipping hook 24 can be quickly unlocked, making the operation simple and convenient.

[0038] like Figures 6 to 9 , Figure 11 , Figure 16 and Figure 17 As shown, there are two sets of slow-descent traction components. The two ends of the roller cover 18 are connected to the feeding box 3 by the slow-descent traction components to ensure that the roller cover 18 is subjected to balanced force when it is turned over and the slow-descent effect is uniform.

[0039] like Figures 6 to 9 , Figure 11 , Figure 12 , Figure 16 and Figure 17 As shown, the slow-descent traction assembly includes an arc-shaped rope-winding seat 26, a steel wire rope 27, a steering pulley 28, and a tension spring 29. The arc-shaped rope-winding seat 26 is fixedly installed at the end of the reel cover 18, and includes an integrally formed traction connection end and an arc-shaped guide section. The traction connection end is located at the end of the arc-shaped guide section, which extends in an arc direction with the rotation axis of the reel cover 18 as the center. A limiting rope-winding groove for the steel wire rope 27 to be wound and stored is formed between the arc-shaped guide section and the reel cover 18. One end of the steel wire rope 27 is connected to the traction connection end. The steering pulley 28 is rotatably installed at the corner position of the feeding box 3 to change the direction of the steel wire rope 27, avoid direct contact and friction wear between the steel wire rope 27 and the feeding box 3, and at the same time ensure that the traction force direction always conforms to the turning trajectory of the reel cover 18. The other end of the steel wire rope 27 passes around the steering pulley 28 and is connected to the feeding box 3 through the tension spring 29. As the reel cover 18 is opened and flipped downwards, the wire rope 27 is gradually wound and stored in the limiting rope groove. The amount of wire rope 27 wound in the limiting rope groove increases as the reel cover 18 is gradually lowered. The tension spring 29 continuously provides reverse tension as the wire rope 27 is released, holding the reel cover 18 and limiting the falling speed of the reel cover 18, so as to achieve a smooth and slow descent and flipping of the reel cover 18.

[0040] Specifically, such as Figure 16 and Figure 17 As shown, a spring mounting base 30 is fixedly installed on the feeding box 3. Tensioning rods 31 are threaded onto both ends of the spring mounting base 30. A tension spring 29 is located between the tensioning rod 31 and the wire rope 27, with both ends of the tension spring 29 connected to the tensioning rod 31 and the wire rope 27, respectively. The tensioning rod 31 serves both to connect and fine-tune the spring preload. Rotating the tensioning rod 31 allows for fine-tuning of the tension spring 29's preload, adapting to different reel cover weights and varying tilting damping requirements.

[0041] During the flipping and lowering process of the reel cover 18, the wire rope 27 is gradually wound into the limiting rope groove. The tension spring 29 is continuously stretched and generates a reverse buffering force, which continuously restrains the falling speed of the reel cover 18, preventing the reel cover 18 from falling freely and rapidly and hitting the feeding box 3. This achieves a smooth and slow flipping and lowering of the reel cover 18, improving operational safety. When the operation is completed and the reel cover 18 is reset and closed, the tension spring 29 retracts to assist in the reset of the reel cover 18, making the reset easier.

[0042] The device features a reversible and closable roller cover 18, along with a cover locking assembly and a slow-descent traction assembly. During feeding operations, the roller cover 18 is located outside the material belt roller 6, effectively isolating and protecting the high-speed rotating material belt roller 6 and the wound seedling conveyor belt. This effectively prevents safety accidents such as material splashing, accidental hand contact, and clothing entanglement, and solves the safety hazard of the material belt roller 6 being completely exposed and unprotected, making the feeding operation safer and more reliable. At the same time, when replacing the material belt roller 6, the roller cover 18 can be flipped open to form a receiving structure. When the material belt roller 6 with the seedling conveyor belt is disassembled, it will fall onto the roller cover 18, which receives the material belt roller 6, greatly reducing the drop height of the material belt roller 6 and making the drop of the material belt roller 6 with the seedling conveyor belt safer and more stable.

[0043] like Figure 6 and Figure 12As shown, a first safety door switch 32 is provided between the reel cover 18 and the feeding box 3. The sensor body of the first safety door switch 32 is fixedly installed on the feeding box 3, and the actuator of the first safety door switch 32 is fixedly installed on the end of the reel cover 18. The first safety door switch 32 allows normal operation only when the reel cover 18 is closed and locked, the sensor body and the actuator are matched, and the equipment safety circuit is connected. When the reel cover 18 is unlocked and flipped open, the first safety door switch 32 disengages, the safety circuit is immediately disconnected, and the equipment is forcibly stopped. This achieves a safety interlock between the opening of the reel cover 18 and the shutdown of the equipment, preventing personnel from approaching dangerous work areas without adequate protection and causing safety accidents, further enhancing the equipment's safety protection level.

[0044] like Figures 1 to 4 , Figures 18 to 21 As shown, the crushing chamber has a crushing cavity, in which a rotating blade roller is rotatably mounted. The outer circumference of the rotating blade roller has several circumferentially arranged moving blades 36. Fixed blades 37, which cooperate with the moving blades 36, are also fixedly installed inside the crushing chamber. A first blade roller drive device is installed in the power housing 4 to drive the rotating blade roller to rotate forward, and a second blade roller drive device is installed on the frame 1 to drive the rotating blade roller to rotate backward. A grinding edge is opened at the top of the crushing chamber along the axial direction of the rotating blade roller, corresponding to the rotating blade roller. An in-situ grinding device is also provided at the corresponding position on the top of the crushing chamber to grind the moving blades 36. When the first blade roller drive device drives the rotating blade roller to rotate forward, the moving blades 36 sequentially engage with the fixed blades 37 to cut and crush the fruit and vegetable seedlings. When the second blade roller drive device drives the rotating blade roller to rotate backward, the in-situ grinding device automatically grinds each moving blade 36.

[0045] like Figures 18 to 21 As shown, the crushing box adopts a split-type combined structure, including a feeding box 33, a lower box 34, and an upper box 35. The feeding box 33 and the lower box 34 are both fixedly installed on the frame 1. One end of the feeding box 33 is connected to the feeding box 3, and the other end of the feeding box 33 is connected to the lower box 34. The feeding box 33 is equipped with a feeding conveying mechanism driven by a feeding drive device. The feeding conveying mechanism is used to convey the fruit and vegetable seedlings entering the crushing box to the crushing chamber.

[0046] like Figures 18 to 20 As shown, the upper box part 35 is hinged to the lower box part 34. The upper box part 35 can be flipped open and closed around the hinge point. The upper box part 35 and the lower box part 34 surround to form a crushing chamber. The rotating cutter roller is rotatably installed on the lower box part 34 and located in the crushing chamber. The top of the upper box part 35 has a discharge port that communicates with the crushing chamber. The top of the upper box part 35 has a throwing mechanism corresponding to its discharge port. The throwing mechanism has the same structure as the existing equipment and will not be described in detail here.

[0047] like Figure 18 and Figure 19 As shown, an opening and closing hydraulic cylinder 38 is also provided between the upper box section 35 and the lower box section 34. There are two opening and closing hydraulic cylinders 38, which are located on the two outer sides of the crushing box. The cylinder body end of the opening and closing hydraulic cylinder 38 is hinged to the lower box section 34, and the piston rod end of the opening and closing hydraulic cylinder 38 is hinged to the upper box section 35. The upper box section 35 can be automatically flipped open and closed by extending and retracting the piston rod of the opening and closing hydraulic cylinder 38. There is no need to manually disassemble a large number of fasteners and move the box. This makes the opening and closing operation between the upper box section 35 and the lower box section 34 convenient and labor-saving. The rotating cutter roller can be inspected and maintained by opening the upper box section 35.

[0048] like Figures 18 to 20 As shown, a locking connecting plate 39 is also provided between the top of the upper box body 35 and the top of the feeding box body 33. The two ends of the locking connecting plate 39 are detachably and fixedly connected to the feeding box body 33 and the upper box body 35, respectively. During normal operation of the equipment, the two ends of the locking connecting plate 39 are fixedly connected to the feeding box body 33 and the upper box body 35, respectively, and the upper box body 35 cannot be opened, ensuring the overall sealing and structural stability of the crushing box and preventing the box from loosening due to operational vibration. When it is necessary to open the box for inspection and maintenance, the locking connecting plate 39 is first removed, and then the upper box body 35 is lifted and opened by the opening and closing cylinder 38. After the inspection and maintenance is completed, the upper box body 35 is first driven down and closed by the opening and closing cylinder 38, and then the locking connecting plate 39 is used again to connect and fix the feeding box body 33 and the upper box body 35.

[0049] To ensure the safety of maintenance and repair work, such as Figure 18 As shown, a second safety door switch 40 for detecting the opening and closing status of the upper housing 35 is also provided between the upper housing 35 and the lower housing 34. The sensor body of the second safety door switch 40 is fixedly installed on the lower housing 34, and the actuator of the second safety door switch 40 is fixedly installed on the upper housing 35. The second safety door switch 40 can detect the opening and closing status of the upper housing 35 in real time. Only when the upper housing 35 is in the closed state, the sensor body of the second safety door switch 40 and the actuator are matched, and the equipment safety circuit is connected, can the equipment start and run normally. When the upper housing 35 is flipped open, the second safety door switch 40 disengages, the safety circuit is immediately disconnected, and the equipment is forced to stop. This realizes the safety interlock between the opening of the upper housing 35 and the shutdown of the equipment, ensuring that the equipment is always in a stopped state when the staff is performing maintenance work, and further improving the safety protection level of the equipment.

[0050] like Figures 19 to 21As shown, the upper housing 35 is provided with a maintenance cover 41 at the corresponding position of its discharge port. One end of the maintenance cover 41 is hinged to the upper housing 35. The other end of the maintenance cover 41 and the upper housing 35 are provided with a heavy-duty buckle 42 for locking the two together, and a third safety door switch 43 for detecting the opening and closing status of the maintenance cover 41. The sensor body of the third safety door switch 43 is fixedly installed on the upper housing 35, and the actuator of the third safety door switch 43 is fixedly installed on the maintenance cover 41. The inspection cover 41 can be flipped outward around the hinge position and opened. The heavy-duty latch 42 secures the inspection cover 41 to the upper housing 35. Simultaneously, opening the heavy-duty latch 42 allows the inspection cover 41 to be flipped open, enabling direct observation of the crushing chamber's internal workings from the discharge port. It also allows for clearing blockages at the discharge port without opening the entire crushing chamber; simply opening the inspection cover 41 allows for timely unblocking, making it convenient and quick. Meanwhile, the third safety door switch 43 can detect the opening and closing status of the inspection cover 41 in real time. Only when the inspection cover 41 is closed, and the sensor body and actuator of the third safety door switch 43 are matched, can the equipment's safety circuit be activated, allowing normal startup and operation. When the inspection cover 41 is open, the third safety door switch 43 disengages, immediately disconnecting the safety circuit and forcing the equipment to stop. This achieves a safety interlock between the opening of the inspection cover 41 and the equipment shutdown, further enhancing the equipment's safety protection level.

[0051] This rice-pulverizing machine adopts a hydraulic cylinder-driven split crushing box with an independent maintenance cover 41, which completely changes the drawbacks of traditional equipment boxes being cumbersome, laborious, and inconvenient to maintain. It can realize a maintenance mode that combines full machine box opening for comprehensive inspection and partial maintenance through the quick unblocking of the maintenance cover 41, greatly reducing the difficulty of daily equipment maintenance and cleaning, and shortening downtime for maintenance. At the same time, it is equipped with a safety door switch protection structure to monitor the opening and closing status of the equipment in real time, realize safety interlock protection, effectively avoid safety risks during maintenance operations, and significantly improve equipment safety and ease of operation and maintenance.

[0052] like Figure 18 , Figure 20 and Figure 21As shown, the feeding and conveying mechanism includes an upper material conveying roller 44 and a lower material conveying roller 45. The upper material conveying roller 44 is rotatably mounted on the top of the feeding box 33, and the lower material conveying roller 45 is rotatably mounted on the bottom of the feeding box 33. Two lower material conveying rollers 45 are arranged side by side, and the upper material conveying roller 44 is located directly above the two lower material conveying rollers 45 and in the middle of the two lower material conveying rollers 45. A feeding channel is formed between the upper material conveying roller 44 and the lower material conveying roller 45. When in working condition, driven by the feeding drive device, the upper material conveying roller 44 and the lower material conveying roller 45 rotate in opposite directions, and together realize the conveying of fruit and vegetable seedlings. This effectively solves the problems of feeding slippage, jamming, and blockage that exist in traditional single-power roller conveying, and ensures continuous and smooth feeding process.

[0053] like Figure 18 and Figure 20 As shown, the feeding drive device includes a third hydraulic motor 46 fixedly mounted on the feeding box 33. The third hydraulic motor 46 is located on one side of the feeding box 33, and a transmission gear set is provided on the other side of the feeding box 33. The output shaft of the third hydraulic motor 46 is connected to one end of the roller shaft of one of the lower material conveying rollers 45 via a coupling. The upper material conveying roller 44 and the two lower material conveying rollers 45 are connected by the transmission gear set. The transmission gear set includes a driving gear 47, a first driven gear 48, a first idler gear 49, a second idler gear 50, and a second driven gear 51, with the driving gear 47 installed in it. On the roller shaft of one lower material conveying roller 45, a first driven gear 48 is mounted on the roller shaft of another lower material conveying roller 45. A first idler gear 49 and a second idler gear 50 are both rotatably mounted on the feed box body 33. The first idler gear 49 is located between the driving gear 47 and the first driven gear 48, and the first idler gear 49 meshes with the driving gear 47 and the first driven gear 48 respectively. A second driven gear 51 is mounted on the roller shaft of the upper material conveying roller 44. The second idler gear 50 is located between the first idler gear 49 and the second driven gear 51, and the second idler gear 50 meshes with the first idler gear 49 and the second driven gear 51 respectively. The third hydraulic motor 46 operates, driving the two lower material conveying rollers 45 and the upper material conveying roller 44 to rotate synchronously in opposite directions. Relying on the gear set to precisely match the speed and direction of each conveying roller, the ability to grab and convey fruit and vegetable seedlings with high toughness, irregular shape, and high water content is greatly improved, thereby achieving effective conveying of fruit and vegetable seedlings. This completely solves the problems of slippage, jamming, and blockage in traditional single-power feeding, significantly improving the continuity and stability of feeding, effectively improving the overall operating efficiency of the machine, and making it suitable for various fruit and vegetable seedling crushing operations, with greater versatility.

[0054] like Figure 19As shown, a gear cover plate 52 covering the transmission gear set is also fixedly installed on the feed box body 33. The gear cover plate 52 provides safety protection for each transmission gear, prevents dust and debris from entering and causing gear wear and transmission jamming, and ensures stable power transmission.

[0055] like Figure 20 and Figure 22 As shown, both ends of the fixed blade 37 extend outside the crushing chamber, and each end of the fixed blade 37 has a strip-shaped mounting hole. The two ends of the fixed blade 37 are fixedly connected to the crushing chamber using positioning bolts passing through the strip-shaped mounting holes. Loosening the positioning bolts allows for fine-tuning of the fixed blade 37; after adjustment, the positioning bolts are tightened again. Workers can adjust the front-to-back mounting position and shearing angle of the fixed blade 37 directly through the positioning bolts outside the crushing chamber, without opening the crushing chamber, according to the variety, thickness, and toughness of the seedlings. This adapts to the crushing and processing needs of different fruit and vegetable seedlings, making the adjustment process simple and convenient, effectively improving the equipment's versatility and crushing accuracy.

[0056] like Figure 21 , Figure 22 , Figure 24 and Figure 25 As shown, the rotating cutter roller includes a cutter roller frame that is rotatably installed in the crushing chamber. Several inclined moving blades 36 are fixedly installed on the cutter roller frame. When the rotating cutter roller is in the forward rotation state, the several moving blades 36 sequentially form a shearing engagement with the fixed blades 37. In this way, as the inclined moving blades 36 rotate with the cutter roller frame, they can gradually cut the fruit and vegetable seedlings from one end to the other along their own length direction, realizing progressive shearing and crushing. Compared with traditional straight-face synchronous cutting, it can significantly reduce the cutting resistance of high-toughness fruit and vegetable seedlings and avoid hard cutting and jamming.

[0057] like Figure 22 , Figure 24 and Figure 25As shown, the cutter roller frame includes a connecting central shaft 53, on which a plurality of star-shaped cutter discs 54 are fixedly mounted. The plurality of star-shaped cutter discs 54 are evenly arranged along the axial direction of the connecting central shaft 53, and there is an installation gap between adjacent star-shaped cutter discs 54. The outer periphery of the star-shaped cutter discs 54 has a plurality of integrally formed toothed lugs 5401. The plurality of toothed lugs 5401 are evenly arranged along the circumference of the star-shaped cutter discs 54, and the toothed lugs 5401 of adjacent star-shaped cutter discs 54 are staggered. The toothed lugs 5401 of two adjacent star-shaped cutter discs 54 A blade mounting plate 55 is fixedly installed between the blade and the mounting plate 55. The moving blade 36 is fixedly installed on the blade mounting plate 55 with mounting bolts, which facilitates later replacement and maintenance. A pad 56 is also provided above the moving blade 36. The moving blade 36 is located between the pad 56 and the blade mounting plate 55. The moving blade 36 is fixedly clamped between the pad 56 and the blade mounting plate 55. While the pad 56 provides pressure and protection for the moving blade 36, it also greatly improves the assembly stability and structural strength of the moving blade 36, effectively resists the impact force generated by high-speed cutting, and prevents the blade from loosening or shifting.

[0058] Specifically, such as Figure 22 , Figure 24 and Figure 25 As shown, at least two sets of moving blades 36 are arranged along the axial direction of the connecting central shaft 53 on the cutter roller frame. Each set of moving blades 36 is arranged circumferentially along the cutter roller frame, with adjacent sets of moving blades 36 staggered. The tilt angle and direction of the moving blades 36 within the same set are consistent, while the tilt directions of adjacent sets of moving blades 36 are opposite. During the rotation of the cutter roller, multiple sets of forward and reverse tilting, staggered moving blades 36 can sequentially pass over the fixed blade 37, forming a continuous and dynamic shearing action to cut and pulverize fruit and vegetable seedlings. In this embodiment, three star-shaped cutter discs 54 are evenly arranged along the axial direction of the connecting central shaft 53. The moving blades 36 are divided into two sets, which are interconnected in the axial pulverizing area, with no shearing blind spots, completely covering the pulverizing width of the fruit and vegetable seedlings.

[0059] like Figure 2 , Figure 4 , Figures 22 to 24 , Figure 36 As shown, a main cutter shaft 57 is fixedly connected to the connecting shaft 53. The rotating cutter roller is rotatably mounted on the crushing chamber via the main cutter shaft 57. One end of the main cutter shaft 57 extends outside the crushing chamber to form a power connection end. The first cutter roller drive device includes a diesel engine 58 fixedly mounted inside the power housing 4. The output shaft of the diesel engine 58 extends outside the power housing 4 and is equipped with a drive pulley 59. A driven pulley 61 is installed at the power connection end of the main cutter shaft 57. The driven pulley 61 is connected to the drive pulley 59 via a transmission belt 60. When the diesel engine 58 operates, it drives the rotating cutter roller to rotate at high speed through the drive pulley 59, transmission belt 60, and driven pulley 61, thereby achieving the cutting and crushing of fruit and vegetable seedlings.

[0060] like Figure 2 and Figure 36 As shown in the figure, a protective cover 62 is fixedly installed on the side of the power box 4 near the crushing box, which covers the driving pulley 59, the transmission belt 60 and the driven pulley 61. The protective cover 62 serves to prevent dust and provide safety protection.

[0061] This seedling puller uses a structure combining a fixed blade 37 and a rotating blade roller as the core crushing component for seedlings. The fixed blade 37 has an adjustable installation structure, allowing for precise fine-tuning of its installation position and shearing angle without disassembling the crushing chamber, adapting to different working conditions. It is convenient to adjust and highly accurate. The rotating blade roller uses a frame-type blade roller frame structure assembled with a star-shaped blade disc 54 and a connecting central shaft 53 as the mounting carrier for the moving blades 36. The toothed lugs 5401 of two adjacent star-shaped blade discs 54 are arranged in a staggered manner, which, together with multiple sets of moving blades 36 arranged axially in a staggered and forward and reverse tilted manner, forms a continuous and stable dynamic shearing cooperation with the fixed blade 37 fixedly installed in the crushing chamber. This enables continuous cutting and crushing of fruit and vegetable seedlings, significantly improving the overall structural impact resistance and stability, greatly enhancing the cutting and crushing effect of fruit and vegetable seedlings, and ensuring uniform crushing force. It can also effectively avoid the occurrence of blade blockage and material blockage caused by accumulation and entanglement of fruit and vegetable seedlings during processing. The overall continuous operation capability, practicality, and operational stability are all significantly improved.

[0062] like Figure 19 and Figure 23 As shown, the second cutter roller drive device includes a fourth hydraulic motor 63 fixedly mounted on the frame 1. A second drive sprocket 64 is mounted on the output shaft of the fourth hydraulic motor 63. The power connection end of the main cutter shaft 57 is also equipped with a second driven sprocket 66 via an electromagnetic clutch 65. The second driven sprocket 66 is connected to the second drive sprocket 64 via a second transmission chain 67. Specifically, a hydraulic motor mounting base 68 is fixedly mounted on the frame 1. The fourth hydraulic motor 63 is fixedly mounted on the hydraulic motor mounting base 68. An electromagnetic clutch fixing plate 69 is provided between the electromagnetic clutch 65 and the hydraulic motor mounting base 68. The electromagnetic clutch 65 is fixedly connected to the hydraulic motor mounting base 68 via the electromagnetic clutch fixing plate 69. During normal crushing operation, the electromagnetic clutch 65 is disengaged, the fourth hydraulic motor 63 is not engaged, and the diesel engine 58 drives the rotating cutter roller to rotate forward to cut and crush fruits, vegetables, and seedlings. When the cutting edge of the moving blade 36 is worn and needs to be sharpened, the diesel engine 58 stops working, the electromagnetic clutch 65 is engaged, and the fourth hydraulic motor 63 is started. This drives the rotating cutter roller to rotate in reverse at a low speed and stably. In conjunction with the in-situ sharpening device, the moving blade 36 can be sharpened in-situ without disassembling and reassembling each moving blade 36. Moreover, the reverse sharpening avoids the problems of cutting edge breakage and blade damage caused by forward sharpening, greatly simplifying the maintenance process.

[0063] like Figure 19 and Figure 23 As shown, a tension sprocket adjusting seat 70 is mounted on the hydraulic motor mounting base 68, and a tension sprocket 71 is rotatably mounted on the tension sprocket adjusting seat 70. The tension sprocket 71 meshes with the second transmission chain 67. The tension of the second transmission chain 67 can be adjusted in real time through the tension sprocket adjusting seat 70 and the tension sprocket 71 to ensure smooth power transmission.

[0064] like Figures 18 to 21 , Figures 26 to 30 As shown, the in-situ sharpening device includes a sharpening frame 72 fixedly installed on the crushing chamber. An opening cover 73 for sealing the sharpening chute is slidably installed at the bottom of the sharpening frame 72. A sliding actuating seat 74 is fixedly installed on the opening cover 73 to facilitate manual actuation of the opening cover 73, enabling rapid opening and closing of the opening cover 73. A sliding mounting seat 75 driven by a sharpening drive device is slidably installed inside the sharpening frame 72 along the length direction of the sharpening chute. A sharpening feed component 76 is threaded onto the sliding mounting seat 75. A sharpening stone 77 corresponding to the sharpening chute is fixedly installed on the sharpening feed component 76. The sharpening frame 72 is also equipped with a feed adjustment component for compensating for the wear of the sharpening stone 77. During the sharpening operation, the sharpening stone 77 reciprocates along the sharpening chute under the drive of the sharpening drive device.

[0065] Specifically, such as Figures 18 to 21 , Figure 26 As shown, a sharpening opening is provided on the top of the upper housing 35. The sharpening holder 72 is fixedly installed on the upper housing 35, and a dust cover 78 is hinged to the top of the sharpening holder 72. The dust cover 78 can be opened and closed freely. During daily operation, the dust cover 78 is in the closed state to prevent debris from entering the interior of the sharpening holder 72 and to ensure the safe and stable operation of the internal structure. Opening the dust cover 78 makes it convenient for workers to move the opening cover 73 and to inspect, replace and maintain the internal structure of the sharpening holder 72.

[0066] like Figure 30 and Figure 31As shown, the bottom of the grinding holder 72 has two corresponding cover plate mounting parts 7201. The cover plate mounting parts 7201 have strip-shaped guide holes 72011 along the direction close to / away from the grinding edge. The open cover plate 73 is located between the two cover plate mounting parts 7201, and both ends of the open cover plate 73 are fixedly mounted with guide posts 79 that are slidably disposed in the strip-shaped guide holes 72011. The open cover plate 73 is slidably mounted on the cover plate mounting parts 7201 by means of the guide posts 79, and the ends of the guide posts 79 pass through the strip-shaped guide holes 72011 and are threaded with locking nuts 80. Loosening the locking nuts 80 allows the open cover plate 73 to slide. When the open cover plate 73 slides into place, tightening the locking nuts 80 again can lock and fix the open cover plate 73 in its current position. When not sharpening, the opening cover 73 closes and blocks the sharpening nozzle to prevent seedling fragments from being thrown out of the nozzle during the crushing of fruits and vegetables. When sharpening, the opening cover 73 is slid open to allow the sharpening nozzle to be opened, and the sharpening operation can be carried out. The structural design of the opening cover 73 combines protection and practicality.

[0067] like Figures 27 to 30 , Figure 33 and Figure 34 As shown, in order to achieve a smooth sliding displacement of the sliding mounting base 75 on the grinding tool holder 72, a double guide sliding structure is adopted to realize the sliding installation of the sliding mounting base 75 on the grinding tool holder 72. The grinding holder 72 has a guide edge 7202. A roller mounting plate 81 is fixedly mounted on one end of the sliding mounting base 75. Two guide wheels 82 are rotatably mounted on the roller mounting plate 81. The two guide wheels 82 are vertically aligned and located on the upper and lower sides of the guide edge 7202, respectively. The wheel surfaces of the guide wheels 82 roll against the corresponding sides of the guide edge 7202, allowing them to roll and move along the guide edge 7202. The sliding mounting base 75 slides along the guide edge 7202 via the guide wheels 82. A guide rail 83 parallel to the guide edge 7202 is also fixedly mounted on the grinding holder 72. A slider 84 is slidably mounted on the guide rail 83. The sliding mounting base 75 is located between the guide rail 83 and the guide edge 7202, and the other end of the sliding mounting base 75 is fixedly connected to the slider 84. The sliding mounting base 75 slides along the guide rail 83 via the slider 84. The dual guide sliding structure works together to ensure that the sliding mounting base 75 slides smoothly, accurately and without deviation, providing a reliable guarantee for uniform grinding of each moving tool 36.

[0068] like Figures 27 to 29 , Figure 32As shown, the sharpening drive device includes a two-way hydraulic cylinder 85 fixedly mounted on the sharpening holder 72. A doubling-pitch transmission mechanism is provided between the two-way hydraulic cylinder 85 and the sliding mounting base 75. The two-way hydraulic cylinder 85 is connected to the sliding mounting base 75 through the doubling-pitch transmission mechanism. The doubling-pitch transmission mechanism can effectively increase the sliding stroke of the sliding mounting base 75, achieving a large-stroke sliding of the sharpening stone 77 along the axial direction of the rotating cutter roller with a smaller hydraulic cylinder extension stroke. This ensures that the sliding stroke of the sharpening stone 77 completely covers all the moving blades 36 of the rotating cutter roller, resulting in sharpening without dead angles.

[0069] like Figures 27 to 29 , Figure 32 As shown, the doubling-pitch transmission mechanism includes two doubling-pitch sprockets 86 and two doubling-pitch chains 87. The two doubling-pitch sprockets 86 are rotatably mounted on both ends of the cylinder body of the bidirectional hydraulic cylinder 85 via sprocket mounting plates, and are axially aligned with the bidirectional hydraulic cylinder 85. The doubling-pitch chain 87 is wound between the two doubling-pitch sprockets 86 and meshes with them. The upper section of the doubling-pitch chain 87 is fixedly connected to the middle position of the grinding frame body 72 via a first connecting plate 88, and the lower section of the doubling-pitch chain 87 is fixedly connected to the sliding mounting base 75 via a second connecting plate 89. When the bidirectional hydraulic cylinder 85 extends or retracts, the cylinder body of the bidirectional hydraulic cylinder 85 drives the two doubling-pitch sprockets 86 to move synchronously, and through the cooperating doubling-pitch sprockets 86 and doubling-pitch chain 87, drives the sliding mounting base 75 to perform a doubling-pitch reciprocating sliding motion. The sliding stroke is stable and controllable, and the transmission accuracy is high.

[0070] like Figures 27 to 29 , Figures 32 to 35As shown, the grinding feed component 76 includes an integrally formed mounting cylinder 7601 and a feed ratchet 7602. The mounting cylinder 7601 is threaded onto the sliding mounting base 75. The feed ratchet 7602 is located at the top of the mounting cylinder 7601 and is coaxially arranged with the mounting cylinder 7601. The feed adjustment assembly includes a ratchet positioning plate 90 for limiting and fixing the feed ratchet 7602 and a ratchet 7602 for actuating the feed ratchet 7602. A ratchet plate 91, rotating at 602, adjusts the feed of the sharpening stone 77. A ratchet positioning plate 90 is fixedly mounted on a sliding mounting base 75, with the positioning plate abutting against the teeth of the feed ratchet 7602. The ratchet plate 91 is fixedly mounted at one end of the sharpening frame 72, which has an initial sharpening position. When the sliding mounting base 75 is in the initial sharpening position, the ratchet plate 91 abuts against the teeth of the feed ratchet 7602. When the equipment is crushing fruit and vegetable seedlings, the sharpening stone 77 is in the initial sharpening position, ensuring it does not interfere with or affect the normal crushing operation of the rotating blade roller. The ratchet positioning plate 90 is used to position the feed ratchet 7602, preventing the sharpening feed piece 76 from rotating arbitrarily during operation and causing the sharpening stone 77 to feed or move backward. While the ratchet lever plate 91 is adjusting the feed of the sharpening stone 77 by turning the feed ratchet 7602, the ratchet positioning plate 90 will not obstruct the rotation of the feed ratchet 7602. Thus, with the coordinated operation of the ratchet positioning plate 90 and the ratchet lever plate 91, unidirectional feeding of the sharpening stone 77 and normal locking to prevent backlash are achieved.

[0071] like Figures 27 to 30 , Figures 32 to 34 As shown, to achieve precise control of the reciprocating sliding displacement of the sharpening stone 77, both sides of the sliding mounting base 75 have integrally formed detection parts 7501, and proximity switches 92 for detection by the detection parts 7501 are fixedly installed at both ends of the sharpening frame 72. During the reciprocating sliding of the sliding mounting base 75, the proximity switches 92 at both ends of the sharpening frame 72 can sense the position signal of the detection parts 7501 in real time to detect the positioning information of the sharpening stone 77. When the proximity switch 92 at one end of the sharpening frame 72 detects the signal of the detection part 7501, the sharpening stone 77 is at the initial sharpening position. When the proximity switch 92 at the other end of the sharpening frame 72 detects the signal of the detection part 7501, the sharpening stone 77 has moved to the end of its stroke. The proximity switch 92 feeds the detection signal back to the control system, and the control system controls the bidirectional hydraulic cylinder 85 to work, driving the sliding mounting base 75 to reset and slide. In this way, the sliding mounting base 75 is ensured to reciprocate within the set stroke range.

[0072] Specifically, such as Figures 33 to 35As shown, the sliding mounting base 75 has a threaded mounting hole for mounting the grinding tool feed piece 76. The outer peripheral wall of the mounting cylinder 7601 has an external thread that matches the internal thread of the threaded mounting hole. The mounting cylinder 7601 is threaded onto the sliding mounting base 75 through the threaded mounting hole. The ratchet plate 91 moves the feed ratchet 7602 to rotate, which drives the mounting cylinder 7601 to rotate synchronously, thereby realizing the axial lifting and lowering feed of the grinding tool feed piece 76.

[0073] In this embodiment, when the sharpening stone 77 is reset to the initial sharpening position each time, the ratchet plate 91 precisely abuts against the teeth of the feed ratchet 7602, which can realize automatic tooth feeding. The ratchet plate 91 automatically moves the feed ratchet 7602, causing the sharpening feed member 76 to rotate by a feed amount, thereby driving the sharpening stone 77 to drop by 0.05mm, accurately compensating for the wear and tear of the sharpening stone 77.

[0074] like Figures 33 to 35 As shown, to achieve the installation of the sharpening stone 77 on the sharpening feed member 76, the sharpening feed member 76 has a through-hole. The sharpening stone 77 is adapted to the central hole and is fixedly installed inside the central hole of the sharpening feed member 76. The bottom end of the sharpening stone 77 extends to the outside of the mounting cylinder 7601 to form a grinding end, which is used to directly contact the moving blade 36 to achieve the grinding operation. Specifically, the sharpening stone 77 is cylindrical, and the outer diameter of the sharpening stone 77 is adapted to the inner diameter of the central hole of the sharpening feed member 76. The sharpening stone 77 is axially inserted into the central hole of the sharpening feed member 76. The bottom of the mounting cylinder 7601 is threaded with a positioning bolt for locking and fixing the sharpening stone 77. In this way, the installation operation of the sharpening stone 77 on the sharpening feed member 76 is simple and convenient, and the installation is firm and reliable.

[0075] This rice seedling puller has two working modes in actual use: normal crushing operation and in-situ blade sharpening operation. The specific working process is as follows: Normal field crushing operations: When the seedling puller performs the operation of crushing and returning fruit and vegetable seedlings to the field, the opening cover plate 73 is in a blocking state of the grinding blade, and the grinding stone 77 is always in the initial grinding position and will not come into contact with the moving blade 36 of the rotating blade roller below, so there is no interference in operation; the roller cover 18 is in a closed state and is located outside the material belt roller 6. The first hydraulic motor 8 drives the material belt roller 6 to rotate, realizing the automatic winding of the seedling conveyor belt. The second hydraulic motor 15 drives the feeding roller 7 to rotate synchronously. The third hydraulic motor 46 drives the upper material conveying roller 44 and the lower material conveying roller 45 to operate stably. The diesel engine 58 drives the rotating blade roller to rotate forward at high speed.

[0076] During operation, the seedling conveyor belt passes sequentially through the correction bracket 19 and the non-powered auxiliary roller 20 before being wound onto the feed belt reel 6. The fruit and vegetable seedlings conveyed on the seedling conveyor belt are fed into the crushing chamber by the feeding roller 7 and the feeding partition 5. The reel cover 18 effectively isolates and protects the high-speed rotating feed belt reel 6 and the continuously wound seedling conveyor belt. After the feed belt reel 6 completes the winding of a single seedling conveyor belt, the first hydraulic motor 8 stops working, and then the cover lock can be released. With the fixed component locked, the reel cover 18 is opened and smoothly and slowly flipped down using the slow-descent traction component. Then, the reel 6 fully wound with seedlings is disassembled using the quick-release component. The reel 6 falls onto the reel cover 18, which supports the material reel 6. Finally, the fully loaded reel 6 is removed, replaced with a new one, and the reel cover 18 is reset and locked. After the fruit and vegetable seedlings enter the crushing chamber, they are automatically and continuously fed into the crushing chamber by the upper material conveying roller 44 and the lower material conveying roller 45. Once inside the crushing chamber, the seedlings are continuously sheared and crushed by the fixed blade 37 and the high-speed rotating blade roller, cutting them into uniform and fine seedling fragments. The crushed material is discharged through the throwing mechanism under the centrifugal force generated by the high-speed rotation of the blade roller.

[0077] In-situ automatic tool sharpening operation: When the equipment operates for a long time and the moving blades 36 become worn and dull, resulting in a decrease in the pulverizing effect, the equipment stops, the opening cover 73 is opened, and then the fourth hydraulic motor 63 operates, driving the rotating cutter roller to rotate at a low speed, so that each moving blade 36 of the rotating cutter roller passes through the grinding station in sequence and evenly. At the same time, the bidirectional hydraulic cylinder 85 drives the grinding stone 77 to move back along the grinding edge, realizing automatic grinding of each moving blade 36. As the grinding stone 77 will gradually wear during the grinding process, when the wear of the grinding stone 77 reaches the set value and the grinding effect on the moving blades 36 decreases, the bidirectional hydraulic cylinder 85 drives the sliding mounting base 75 to reset, returning to the initial grinding position. When the sliding mounting base 75 resets, the ratchet plate... The automatic feed ratchet 7602 is activated by the 91 unit, causing the grinding feed piece 76 to rotate by a feed amount, feeding the grinding stone 77 downwards in a precise manner. This accurately compensates for the wear and tear of the grinding stone 77, ensuring that the grinding stone 77 maintains effective grinding contact with the moving blade 36 during the grinding operation, thus continuously guaranteeing grinding accuracy and effect. After feeding is completed, the ratchet positioning plate 90 automatically locks and limits the feed ratchet 7602 to prevent the grinding stone 77 from shifting backward, ensuring that the grinding stone 77 maintains a precise and effective grinding contact distance with the moving blade 36 throughout the grinding operation, continuously stabilizing grinding accuracy. No manual adjustment or calibration is required throughout the process, achieving automated grinding compensation. After grinding is completed, the bidirectional hydraulic cylinder 85 drives the grinding stone 77 to return to the initial grinding position, and the opening cover plate 73 is reset to seal the grinding opening. After the moving blade 36 is ground, the rice pulling machine can continue to operate in the field.

[0078] This seedling puller adopts a modular integrated structure design, enabling multi-process collaborative operation. It achieves highly efficient and automated crushing of fruit and vegetable seedlings. Through a closed feeding protection structure, a quick-opening and closing crushing chamber, a dual-mode drive design for the rotating blade roller, and the addition of an in-situ automatic blade sharpening structure, it solves the technical defects of existing equipment, such as lack of feeding protection, easy material blockage, poor crushing stability, lack of in-situ blade sharpening function, cumbersome maintenance, and insufficient safety. By adding a flip-openable roller cover 18 with matching cover locking components and a slow-descent traction component, it solves the safety hazard of the completely exposed and unprotected material belt roller 6, making feeding operations safer and more reliable, and making the disassembly and replacement of the material belt roller 6 safer and smoother. Through the improved feeding conveyor mechanism and rotating blade roller structure, it achieves efficient and orderly feeding and cutting of fruit and vegetable seedlings, completely improving equipment problems such as material jamming, blockage, and blade malfunction, and enhancing the uniformity of material crushing and operational stability. At the same time, the quick-opening and closing crushing chamber structure greatly simplifies material blockage cleaning and internal chamber maintenance. The maintenance process is streamlined. Furthermore, the two sets of blade roller drive devices are adapted to high-speed crushing operations and low-speed precision grinding conditions, respectively. Based on the structural design of automatic in-situ grinding and automatic wear compensation, the precision grinding of the moving blades 36 can be completed directly on the equipment body, achieving in-situ grinding of each moving blade 36 without disassembly. This significantly simplifies the maintenance process for the moving blades 36, greatly improves the grinding efficiency and quality after the moving blades 36 have become dull, significantly shortens the equipment downtime for maintenance, reduces equipment operation and maintenance costs, and is suitable for high-frequency blade maintenance operations in the field, meeting the needs of large-scale, high-efficiency farming.

[0079] In summary, this rice seedling puller is highly integrated, compact in structure, and easy to operate and maintain. It can effectively meet the needs of large-scale and efficient field seedling cleaning operations, significantly improve the efficiency of fruit and vegetable residue crushing and returning to the field, avoid the breeding of pests and diseases and agricultural non-point source pollution caused by the accumulation of residues in the field, and greatly improve the equipment's safety, operational stability, and ease of operation and maintenance, making it highly practical.

[0080] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention. Furthermore, it should be understood that after reading the technical description of this invention, those skilled in the art can make various alterations, modifications, and / or variations to the invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A rice seedling puller, comprising a frame, a tracked walking mechanism at the bottom of the frame, and a feeding box, a crushing box, and a power box fixedly mounted on the frame, wherein the feeding box is located at the feed inlet of the crushing box; characterized in that, A rotating cutter roller is rotatably installed inside the crushing chamber. The outer circumference of the rotating cutter roller has several moving cutters arranged in a circumferential direction. A fixed cutter that cooperates with the moving cutters is also fixedly installed inside the crushing chamber. A first cutter roller drive device is provided inside the power box to drive the rotating cutter roller to rotate forward. A second cutter roller drive device is provided on the frame to drive the rotating cutter roller to rotate backward. The top of the crushing chamber is provided with a grinding mouth along the axial direction of the rotating cutter roller. The grinding mouth is correspondingly arranged with the rotating cutter roller. The top of the crushing chamber is provided with an in-situ grinding device at the position corresponding to the grinding mouth to realize the grinding of the moving blade. The in-situ sharpening device includes a sharpening frame fixedly installed on the crushing chamber. An opening cover plate for sealing the sharpening nozzle is slidably installed at the bottom of the sharpening frame. A sliding mounting seat driven by a sharpening drive device is slidably installed inside the sharpening frame along the length direction of the sharpening nozzle. A sharpening feed component is threaded onto the sliding mounting seat. A sharpening stone corresponding to the sharpening nozzle is fixedly installed on the sharpening feed component. The sharpening frame also has a feed adjustment component for compensating for wear of the sharpening stone.

2. The rice-pulling machine according to claim 1, characterized in that, A feeding baffle is fixedly installed inside the feeding box. A material belt reel driven by a reel drive device is provided below the feeding baffle. A feeding roller driven by a feeding drive device is rotatably installed above the feeding baffle. There is a feeding gap between the feeding roller and the feeding baffle for material to pass through. The feeding box is provided with a roller cover at the corresponding position of the material belt roller. The roller cover is rotatably mounted on the feeding box in the direction surrounding the material belt roller. A cover locking component and a slow descent traction component are provided between the roller cover and the feeding box. The top of the roll cover is also provided with a correction bracket and a non-powered auxiliary roller. The non-powered auxiliary roller is rotatably mounted on the roll cover and is located between the correction bracket and the material roll. When the roll cover is in the protective state, the non-powered auxiliary roller is located close to the feed partition. When the roll cover is in the open state, the roll cover is located below the material roll.

3. The rice-pulling machine according to claim 2, characterized in that, The reel drive device includes a first hydraulic motor fixedly installed at the bottom of one end of the feeding box. A first reel pin is installed on the output shaft of the first hydraulic motor. A second reel pin is rotatably installed at the bottom of the other end of the feeding box via a reel quick-release assembly. The material reel is located between the first reel pin and the second reel pin. When in the feeding state, the second reel pin is correspondingly set with the first reel pin, and the material reel is clamped between the first reel pin and the second reel pin. The quick-release assembly of the reel includes a one-way outward flap, a pressing plate, and a fixing block. One end of the one-way outward flap is hinged to the feeding box. The second reel ejector pin is rotatably mounted on the other end of the one-way outward flap via an ejector pin bearing seat. One end of the pressing plate is rotatably connected to one side of the one-way outward flap, and one end of the pressing plate has an integrally formed actuating part. The fixing block is fixedly mounted on the feeding box and is located near the other side of the one-way outward flap. The fixing block has a slot for the other end of the pressing plate to engage. The feeding roller is rotatably mounted on the feeding box. The feeding drive device includes a second hydraulic motor fixedly mounted on the feeding box. A first drive sprocket is mounted on the output shaft of the second hydraulic motor. A first driven sprocket is mounted on one end of the roller shaft of the feeding roller. The first driven sprocket is connected to the first drive sprocket via a first transmission chain.

4. The rice-pulling machine according to claim 3, characterized in that, Both ends of the reel cover are rotatably connected to the feeding box body by rotary bearings, and the reel cover locking assembly is provided between both ends of the reel cover and the feeding box body. The protective cover locking assembly includes a hook shaft, a hook, and a limiting shaft. The hook shaft is fixedly installed on the feeding box. The hook is rotatably installed on the reel cover using a rotating shaft and is correspondingly set with the hook shaft. The mounting end of the hook has a flip-limiting groove. The limiting shaft is fixedly installed on the reel cover and abuts against the groove wall of the flip-limiting groove. When in the locked state, the hook end of the hook is hooked on the hook shaft. The slow-descent traction assembly is provided in two sets, and the two ends of the roller cover are respectively connected to the feeding box via the slow-descent traction assembly; The descent traction assembly includes an arc-shaped rope winding seat, a steel wire rope, a steering pulley, and a tension spring. The arc-shaped rope winding seat is fixedly installed at the end of the reel cover, and includes an integrally formed traction connection end and an arc-shaped guide section. The traction connection end is located at the end of the arc-shaped guide section. A limiting rope winding groove for winding and storing the steel wire rope is formed between the arc-shaped guide section and the reel cover. One end of the steel wire rope is connected to the traction connection end. The steering pulley is rotatably installed at the corner position of the feeding box. The other end of the steel wire rope passes around the steering pulley and is connected to the feeding box through the tension spring.

5. The rice-pulling machine according to any one of claims 1-4, characterized in that, The crushing chamber includes a feeding chamber, a lower chamber, and an upper chamber. The feeding chamber and the lower chamber are both fixedly installed on the frame. One end of the feeding chamber is connected to the feeding box, and the other end of the feeding chamber is connected to the lower chamber. The feeding chamber is equipped with a feeding conveying mechanism driven by a feeding drive device. The upper box is hinged to the lower box, and the upper box and the lower box form a crushing chamber. The rotating cutter roller is rotatably mounted on the lower box and located in the crushing chamber. The top of the upper box has a discharge port that communicates with the crushing chamber, and the top of the upper box has a throwing mechanism corresponding to its discharge port. An opening and closing hydraulic cylinder is also provided between the upper box and the lower box. Two opening and closing hydraulic cylinders are provided, and the two opening and closing hydraulic cylinders are respectively located on the two outer sides of the crushing box. The cylinder body end of the opening and closing hydraulic cylinder is hinged to the lower box, and the piston rod end of the opening and closing hydraulic cylinder is hinged to the upper box. A locking connecting plate is also provided between the top of the upper box and the top of the feeding box. The two ends of the locking connecting plate are respectively detachably fixedly connected to the feeding box and the upper box.

6. The rice-pulling machine according to claim 5, characterized in that, The feeding and conveying mechanism includes an upper material conveying roller and a lower material conveying roller. The upper material conveying roller is rotatably mounted on the top of the feeding box, and the lower material conveying roller is rotatably mounted on the bottom of the feeding box. Two lower material conveying rollers are arranged side by side, and the upper material conveying roller is located directly above the two lower material conveying rollers. A feeding channel is formed between the upper material conveying roller and the lower material conveying roller. When in working condition, under the drive of the feeding drive device, the upper material conveying roller and the lower material conveying roller rotate in opposite directions. The feeding drive device includes a third hydraulic motor fixedly installed on the feeding box body. The third hydraulic motor is located on one side of the feeding box body, and a transmission gear set is provided on the other side of the feeding box body. The output shaft of the third hydraulic motor is connected to one end of the roller shaft of one of the lower material feeding rollers via a coupling. The upper material feeding roller and the two lower material feeding rollers are connected via the transmission gear set. The transmission gear set includes a driving gear, a first driven gear, a first idler gear, a second idler gear, and a second driven gear. The driving gear is mounted on the shaft of one of the lower material conveying rollers, and the first driven gear is mounted on the shaft of the other lower material conveying roller. The first idler gear and the second idler gear are both rotatably mounted on the feed box. The first idler gear is located between the driving gear and the first driven gear, and meshes with both the driving gear and the first driven gear. The second driven gear is mounted on the shaft of the upper material conveying roller, and the second idler gear is located between the first idler gear and the second driven gear, and meshes with both the first idler gear and the second driven gear. A gear cover plate covering the transmission gear set is also fixedly installed on the feed box body.

7. The rice-pulling machine according to claim 5, characterized in that, The rotating cutter roller includes a cutter roller frame rotatably mounted in the crushing chamber. A plurality of inclined moving cutters are fixedly mounted on the cutter roller frame. When the rotating cutter roller is in the forward rotation state, the plurality of moving cutters sequentially form a shearing engagement with the fixed cutter. The cutter roller frame includes a connecting central shaft, on which a plurality of star-shaped cutter discs are fixedly mounted. The plurality of star-shaped cutter discs are evenly arranged along the axial direction of the connecting central shaft, and there is an installation gap between adjacent star-shaped cutter discs. The outer periphery of each star-shaped cutter disc has a plurality of integrally formed toothed lugs. The plurality of toothed lugs are evenly arranged along the circumference of the star-shaped cutter disc, and the toothed lugs of adjacent star-shaped cutter discs are staggered. A cutter body mounting plate is fixedly mounted between the toothed lugs of two adjacent star-shaped cutter discs, and the moving cutters are respectively fixedly mounted on the cutter body mounting plate. The connecting shaft is fixedly connected to the main cutter shaft, and the rotating cutter roller is rotatably mounted on the crushing box through the main cutter shaft. One end of the main cutter shaft extends out of the crushing box to form a power connection end. The first cutter roller drive device includes a diesel engine fixedly installed in the power box, the output shaft of the diesel engine extends to the outside of the power box and is equipped with a drive pulley, the power connection end of the main cutter shaft is equipped with a driven pulley, and the driven pulley is connected to the drive pulley through a transmission belt; The second cutter roller drive device includes a fourth hydraulic motor fixedly mounted on the frame. A second drive sprocket is mounted on the output shaft of the fourth hydraulic motor. A second driven sprocket is also mounted on the power connection end of the main cutter shaft through an electromagnetic clutch. The second driven sprocket is connected to the second drive sprocket through a second transmission chain.

8. The rice-pulling machine according to claim 5, characterized in that, The upper housing has a grinding hole at its top, the grinding frame is fixedly installed on the upper housing, and a dust cover is hinged to the top of the grinding frame. The bottom of the grinding frame has two corresponding cover plate mounting parts. Each cover plate mounting part has a strip-shaped guide hole along the direction close to / away from the grinding edge. The open cover plate is located between the two cover plate mounting parts, and both ends of the open cover plate are fixedly mounted with guide posts that are slidably disposed in the strip-shaped guide holes. The open cover plate is slidably mounted on the cover plate mounting part by means of the guide posts, and the ends of the guide posts pass through the strip-shaped guide holes and are threaded with locking nuts. A sliding actuating seat is also fixedly mounted on the open cover plate. When not in the grinding state, the open cover plate closes and covers the grinding edge.

9. The rice-pulling machine according to claim 8, characterized in that, The sharpening drive device includes a bidirectional hydraulic cylinder fixedly mounted on the sharpening frame, and a doubling transmission mechanism is provided between the bidirectional hydraulic cylinder and the sliding mounting base. The bidirectional hydraulic cylinder is connected to the sliding mounting base through the doubling transmission mechanism. The doubling transmission mechanism includes doubling sprockets and doubling chains. There are two doubling sprockets, which are rotatably mounted on both ends of the cylinder body of the bidirectional hydraulic cylinder and are axially aligned with the bidirectional hydraulic cylinder. The doubling chain is wound around the two doubling sprockets and meshes with them. The upper section of the doubling chain is fixedly connected to the middle position of the grinding frame body via a first connecting plate, and the lower section of the doubling chain is fixedly connected to the sliding mounting base via a second connecting plate.

10. The rice-pulling machine according to claim 9, characterized in that, The grinding tool feed component includes an integrally formed mounting cylinder and a feed ratchet. The mounting cylinder is threaded onto the sliding mounting seat, and the feed ratchet is located at the top of the mounting cylinder and is coaxially arranged with the mounting cylinder. The feed adjustment assembly includes a ratchet positioning plate for limiting and fixing the feed ratchet and a ratchet shifter for rotating the feed ratchet and adjusting the feed of the whetstone. The ratchet positioning plate is fixedly installed on the sliding mounting base and abuts against the teeth of the feed ratchet. The ratchet shifter is fixedly installed at one end of the sharpening frame, and one end of the sharpening frame is provided with an initial sharpening position. When the sliding mounting base is located at the initial sharpening position, the ratchet shifter abuts against the teeth of the feed ratchet.

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