Chrysanthemum picking machine with comb tooth limiting function

Abstract

The utility model relates to the field of agricultural machinery discloses a kind of chisel limiting type chrysanthemum picking machine, comprising: rack, rack includes two groups of support parts, each group of support parts has front inclined section and rear inclined section extending in different directions, the upper end of both is connected by a straight section, and is connected by multiple connecting crossbars between two groups of support parts;The present application is arranged inside limiting member and outside limiting member along the chisel running path on the front inclined section, straight section and rear inclined section of support part, and form continuous limiting sliding slot between both, so that picking chisel is always constrained by double-side guide when running along transmission chain, realize accurate attitude control.Compared with the shaking of chisel in background technology relies on chain free hanging and the problems such as unstable flower angle, the inclination, yaw amount and space attitude of the limiting sliding slot of the present application can be limited in whole process, avoid irregular swing of chisel in uplink, turning and downlink stage due to inertia or plant resistance.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a comb-tooth limiting chrysanthemum harvesting machine. Background Technology

[0002] Chrysanthemums and marigolds, among other flowering crops, tend to grow in dense clumps with significant interlacing between plants. Existing chrysanthemum harvesting machinery mainly falls into two categories: gripper-type and comb-type. Gripper-type equipment typically uses multiple claws to pick flowers one by one. While it can simulate manual harvesting, it can only pick one flower at a time, resulting in a long harvesting cycle and limited overall efficiency. Furthermore, its reliance on high-precision sensor control mechanisms leads to high equipment costs and maintenance expenses, making it difficult to popularize in ordinary planting scenarios.

[0003] Comb-type harvesters separate flowers in batches by inserting combs into the flower bushes. The structure is relatively simple. However, in actual operation, the angle of the combs entering the bushes is not easy to maintain stability due to the influence of the machine's posture and transmission process. When the combs enter the flower bushes, they tend to push the plants, causing the flower heads and stems to gather and entangle. This results in more stem and stalk impurities being carried along when the flowers are separated, which may damage the plants and affect the quality and yield after harvest.

[0004] The current technology generally lacks a picking structure that can maintain the comb teeth at a stable angle when entering the flower bush during the picking process, reduce disturbance to the plant and reduce the amount of impurities carried in. This has become a key limiting factor in the field of mechanized chrysanthemum picking. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a comb-tooth limiting chrysanthemum picking machine, which aims to alleviate the above problems to at least a certain extent.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A comb-tooth limiting chrysanthemum harvesting machine includes:

[0008] The frame includes two sets of support sections, each set of support sections having a front inclined section and a rear inclined section extending in different directions, the upper ends of the two sections being connected by a straight section, and the two sets of support sections being connected by multiple connecting crossbars.

[0009] A drive component is provided on the support portion, the drive component includes a drive mechanism and a transmission chain arranged along the outside of the support portion, and the transmission chain is provided with picking comb teeth;

[0010] A limiting component provided on the support portion is used to limit the movement of the picking comb teeth along a preset path and angle;

[0011] A collection frame mounted on the frame is used to collect materials.

[0012] Preferably, the picking comb includes two connecting seats, which are fixed to the corresponding transmission chains. A comb body is fixed between the two connecting seats, and a comb baffle is fixed on the comb body.

[0013] Preferably, the limiting component includes an inner limiting member and an outer limiting member. The inner limiting member is arranged along the front inclined section and the rear inclined section and extends to the upper part of the front inclined section, and is fixed to the straight section.

[0014] A connecting piece is fixed on the support part, and the inner limiting member and the outer limiting member are fixed on the connecting piece, forming a limiting groove between the inner limiting member and the outer limiting member;

[0015] The connecting seat is fixed with a limiting slide rod, the end of which extends into the limiting slide groove. The outer limiting member has an arc-shaped channel portion, which provides space for the limiting slide rod to rotate when the transmission chain changes direction.

[0016] Preferably, the driving mechanism includes a plurality of transmission shafts rotatably connected to the support, at least three of which are respectively fixed at the intersection of the front inclined section and the rear inclined section, the intersection of the front inclined section and the straight section, and the intersection of the rear inclined section and the straight section;

[0017] The drive shaft is rotatably connected to the support part via a bearing, and a drive sprocket is provided on the drive shaft, with the drive chain meshing on the drive sprocket.

[0018] Preferably, the drive mechanism further includes a motor fixed to the frame, and a drive chain is provided between the motor output shaft and one of the transmission shafts;

[0019] The frame is provided with a tensioning mechanism, which includes a tensioning shaft rotatably connected to the frame and a tensioning wheel fixed on the tensioning shaft, which meshes with the transmission chain.

[0020] The outer limiting member and the inner limiting member are rotatably connected to an adjustable limiting member at the end of the straight section. The adjustable limiting member includes a pair of guide rods. The upper guide rod is rotatably connected to the outer limiting member, and the lower guide rod is rotatably connected to the inner limiting member. A column is fixed to the upper part of the support, and the guide rod is hinged to the column.

[0021] Preferably, it also includes a cleaning mechanism, which is mounted on the support portion;

[0022] The impurity removal mechanism includes a fixed frame and a cutting mechanism. The fixed frame is fixed to the front inclined section of the support. The cutting mechanism is provided on the fixed frame. The cutting mechanism includes a fixed blade arranged along the width direction of the support and a movable blade that reciprocates linearly relative to the fixed blade. The movable blade is connected to a drive component and is used to cut the flower stem located below the picking comb after the picking comb has lifted the chrysanthemum off the plant.

[0023] Preferably, a collection component is provided between the collection frame and the machine frame for receiving and conveying materials into the collection frame when the picking comb moves along the support to a predetermined position;

[0024] The collection component includes a horizontal conveying mechanism and a vertical conveying mechanism. The chrysanthemums pass through the horizontal conveying mechanism and the vertical conveying mechanism in sequence to reach the collection frame.

[0025] The horizontal conveying mechanism includes a barrier fixed to the support, located at the intersection of the front inclined section and the straight section, with one end extending toward the middle of the straight section and the other end extending toward the intersection of the front inclined section and the rear inclined section. A horizontal frame is also connected to the support, located at the upper end of the barrier. The horizontal frame has an inclined support plate that connects to the upper end of the barrier.

[0026] The horizontal conveying mechanism also includes a horizontal conveyor belt located at the bottom of the horizontal frame, used to convey the chrysanthemums that fall into the receiving plate to the vertical conveying mechanism.

[0027] Preferably, the vertical conveying mechanism includes a transition frame fixed to the side of the frame, located at the end of the horizontal conveyor belt. The transition frame has a transition slide plate located below the end of the horizontal conveyor belt. A vertical fixing member is fixed on the frame, extending upward to above the collecting frame. There are two vertical fixing members, each connected to a vertical baffle. A vertical conveyor belt is provided between the two vertical fixing members, located between the two vertical baffles, and has multiple conveyor belt teeth on it.

[0028] Preferably, the bottom of the transition frame is fixed with anti-fall teeth, which are located on the moving path of the conveyor belt stop teeth.

[0029] Preferably, a fixing rod is fixed on the straight section of the support, and a brush is provided on the fixing rod.

[0030] In summary, the present invention has the following main advantages:

[0031] This application arranges inner and outer limiting components along the comb tooth running path on the front, straight, and rear inclined sections of the support, forming a continuous limiting groove between them. This ensures that the picking comb teeth are always guided and constrained on both sides as they run along the transmission chain, achieving precise posture control. Compared to the problems of large swaying and unstable flower entry angle caused by the comb teeth being freely suspended by the chain in the prior art, the limiting groove of this application can limit the tilt angle, lateral swing, and spatial posture of the comb teeth throughout the entire process, avoiding irregular swaying of the comb teeth due to inertia or plant resistance during the upward, turning, and downward stages. With this structure, the comb teeth can be inserted into the flower cluster with a more stable posture and maintain proper contact with the flower stem, significantly reducing the missed picking rate and flower damage rate. In addition, the limiting groove provides linear guidance for the operation of the comb teeth, preventing the comb teeth from jamming due to sudden angle changes when the chain passes through the bending section, improving the overall smoothness of operation and enhancing the reliability of the equipment in complex field terrain.

[0032] This application, by mechanizing the movement path of the comb teeth, enables harvested chrysanthemums to fall along a controllable trajectory into the collection system, forming an efficient connection with the horizontal and vertical conveyor mechanisms. Because the comb teeth maintain a stable operating posture under the constraint of the limiting grooves, the fallen chrysanthemums accurately fall into the receiving area formed by the enclosure and the receiving plate, avoiding the problems of "comb tooth oscillation causing flower deviation and a large number of chrysanthemums scattering on the ground" in the prior art. The stable coordination between the inclination angle of the receiving plate and the posture of the comb teeth reduces the drop of the chrysanthemums, distributes the force evenly, and reduces stem breakage and petal fall. Subsequently, the chrysanthemums are smoothly conveyed by the horizontal conveyor belt to the vertical conveyor mechanism, where they are progressively lifted by the toothed conveyor belt and reliably enter the collection frame under the guidance of the vertical baffle, thus forming a stable material path from harvesting to centralized collection. This application achieves stable harvesting trajectory, controllable flower falling direction, and continuous and reliable conveying, significantly improving harvesting efficiency, reducing the need for manual intervention, and solving the technical pain points of traditional harvesters such as "chaotic trajectory, scattered flower falling, and discontinuous conveying." Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0035] Figure 3 This is another schematic diagram of the frame structure of this utility model;

[0036] Figure 4 This is another schematic diagram of the frame structure of this utility model;

[0037] Figure 5 This is a schematic diagram of the drive component structure of this utility model;

[0038] Figure 6 This is a schematic diagram of the picking comb tooth structure of this utility model;

[0039] Figure 7 This is a schematic diagram of the limiting component structure of this utility model;

[0040] Figure 8 This is another schematic diagram of the limiting component structure of this utility model;

[0041] Figure 9 This is a schematic diagram of the fixing rod structure of this utility model;

[0042] Figure 10 This is another schematic diagram of the fixing rod structure of this utility model;

[0043] Figure 11 This is a schematic diagram of the cutting mechanism structure of this utility model;

[0044] Figure 12 This is a schematic diagram of the collecting component structure of this utility model;

[0045] Figure 13 This is another schematic diagram of the structure of the collecting component of this utility model;

[0046] Figure 14 This is a schematic diagram of the anti-tooth-falling structure of this utility model.

[0047] Figure label:

[0048] 100. Frame; 101. Support section; 102. Front inclined section; 103. Rear inclined section; 104. Straight section; 105. Connecting crossbar; 106. Drive chain; 107. Picking comb teeth; 108. Collection frame;

[0049] 200. Connecting seat; 201. Comb tooth body; 202. Comb tooth baffle; 203. Inner limiting component; 204. Outer limiting component; 205. Connecting piece; 206. Limiting slide groove; 207. Limiting slide rod; 208. Arc-shaped channel section;

[0050] 300. Drive shaft; 301. Drive sprocket; 302. Motor; 303. Drive chain; 304. Fixing frame; 305. Fixed blade; 306. Moving blade; 307. Drive component; 308. Tensioning shaft; 309. Tensioning wheel; 310. Guide rod; 311. Column;

[0051] 400. Enclosure; 401. Horizontal frame; 402. Support plate; 403. Horizontal conveyor belt; 404. Transition frame; 405. Transition slide plate; 406. Vertical fixing component; 407. Vertical baffle; 408. Vertical conveyor belt; 409. Conveyor belt stop teeth; 410. Anti-fall teeth; 411. Fixing rod; 412. Brush. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0053] refer to Figures 1-14 This embodiment provides a comb-tooth limiting chrysanthemum picking machine, which includes a frame 100, a driving component and a limiting component disposed on the frame 100, as well as a collecting frame 108 and a collecting component.

[0054] The frame 100 includes two sets of opposing support sections 101. Each set of support sections 101 consists of a front inclined section 102 and a rear inclined section 103 extending in different directions. The upper ends of the front inclined section 102 and the rear inclined section 103 are connected by a straight section 104, thereby forming a connection part for mounting the drive component and the limiting component. The two sets of support sections 101 are fixedly connected by multiple connecting crossbars 105, so that the frame 100 as a whole forms a stable spatial frame structure, providing reliable support for the harvesting mechanism.

[0055] Multiple vertical rods are welded to the front inclined section 102 and rear inclined section 103 of each support section 101. The lower end of each vertical rod is fixedly connected to the corresponding front inclined section 102 or rear inclined section 103, and the upper end is connected to the straight section 104. The vertical rods connect the front inclined section 102, rear inclined section 103 and straight section 104 to form a triangular truss structure. On the one hand, this improves the overall rigidity and torsional resistance of the frame 100, preventing deformation of the frame 100 due to bumps during field operations. On the other hand, it provides multiple installation positions for drive components, limit components and protective baffles, facilitating the subsequent arrangement of other functional components.

[0056] The drive components are located on the outside of the two sets of support portions 101, including a drive mechanism fixed to the frame 100 and a transmission chain 106 arranged along the outside of the support portion 101. A plurality of picking comb teeth 107 are provided on the outside of the transmission chain 106.

[0057] A limiting component is arranged on the outside of the support 101, corresponding to the movement path of the picking comb 107, and is used to limit the movement of the picking comb 107 along a preset path and angle. When the transmission chain 106 drives the picking comb 107 to move, it constrains the posture of the picking comb 107, keeping the angle between the picking comb 107 and the support 101 at a preset value. With this structure, when the transmission chain 106 is in the upward and downward sections, the picking comb 107 will not swing significantly due to its own weight or inertia, providing a geometric guarantee for the stable insertion of the comb into the flower bushes.

[0058] The collection frame 108 is fixedly installed in the upper area of ​​the frame 100, and has an upward-opening frame structure for docking with the subsequent collection components. A collection component is provided between the collection frame 108 and the frame 100. When the picking comb 107 moves to a predetermined position on the frame 100 with the transmission chain 106, the chrysanthemums carried on the comb detach from the comb under their own weight and fall onto the collection component, which then guides or transports them into the collection frame 108, thereby completing the post-harvest centralized collection.

[0059] When using the chrysanthemum harvester provided in this embodiment, the entire machine moves forward at a constant speed along the chrysanthemum planting row direction via a tractor or self-propelled chassis. The frame 100 consists of two sets of opposing support sections 101 and connecting crossbars 105. Each set of support sections 101 forms a basic harvesting and conveying path outline with a front inclined section 102 and a rear inclined section 103. The upper ends of the front inclined section 102 and the rear inclined section 103 are connected by a straight section 104. At the same time, the vertical bars on the front inclined section 102 and the rear inclined section 103 form a truss-like spatial structure, which gives the frame 100 good rigidity and torsional resistance when traveling on uneven field roads, making it less prone to deformation and shaking. This provides a stable installation foundation for the drive components, limiting components, and collecting frame 108, thereby ensuring the overall operational stability during the harvesting process.

[0060] During operation, the drive mechanism starts and drives the transmission chain 106 to circulate along the outside of the support 101. Picking comb teeth 107 are provided on the transmission chain 106 and run synchronously with it. (It should be noted that in this embodiment, for ease of description, only one picking comb tooth 107 is provided on the transmission chain 106 for illustrative purposes. In other embodiments, multiple picking comb teeth 107 can be provided on the transmission chain 106 according to the picking efficiency requirements. These multiple comb teeth can be distributed at intervals along the transmission chain 106, thereby achieving continuous, multi-point picking operations during the forward movement of the frame 100, improving overall work efficiency.) As the transmission chain 106 passes below the rear inclined section 103, the picking comb teeth 107 make a cutting motion relative to the flower cluster in the forward direction of the frame 100, inserting into the chrysanthemum plant cluster at a preset angle. Insertion begins in the rear inclined section 103, combing the mature flowers and pulling them away from the plant from the calyx, and then picking and transporting them in the front inclined section 102. The limiting component is located on the outside of the support 101, corresponding to the movement path of the picking comb 107. Throughout the movement of the transmission chain 106, it constrains the posture of the picking comb 107, ensuring that the picking comb 107 remains at a preset angle relative to the support 101, preventing significant swaying due to the weight of the transmission chain 106, inertia, or road undulations. Through this constraint, the picking comb 107 can smoothly pass through the gaps between flower heads when inserted into the flower cluster, reducing pushing and agitation of the plant as a whole. This helps reduce the probability of stem breakage and minimizes the introduction of impurities such as stems and leaves into the harvested material. It also reduces damage to immature flowers and plant roots, balancing harvesting efficiency with stable field yield and quality.

[0061] After the picking comb 107 completes the action of pulling away the chrysanthemum, as the transmission chain 106 continues to move, the picking comb 107 gradually moves upward along the support 101 to the area above the frame 100. During this process, the limiting component continuously limits the running posture of the comb, so that the comb will not suddenly swing when passing the turning position of the support 101, thereby reducing the impact load and vibration of the transmission system, reducing the wear of the transmission chain 106, and improving the reliability and service life of the whole machine. When the picking comb 107 runs to near the predetermined highest position, a collecting component is correspondingly set below it. The chrysanthemums carried on the comb detach from the comb under their own weight and fall onto the surface of the collecting component. Then, under the action of gravity and the conveying action of the collecting component itself, they are guided into the collecting frame 108, realizing the centralized collection of the picked materials. Through the spatial arrangement of the frame 100, the cyclical movement of the drive components, and the coordination between the limiting components and the collecting components, this embodiment can form a continuous operation process from "inserting into the flower bushes to pick - lifting and conveying - centralized collection". While reducing the degree of manual intervention, it can significantly increase the picking volume per unit time and improve the efficiency and quality of mechanized chrysanthemum harvesting.

[0062] In this embodiment, the picking comb teeth 107 adopt a double connecting seat 200 mounting structure to achieve stable support of the comb teeth between the left and right transmission chains 106. Specifically, the picking comb teeth 107 includes two connecting seats 200 respectively fixed to the outside of the left and right transmission chains 106. Each connecting seat 200 is connected to the corresponding transmission chain 106 by bolts, so that the picking comb teeth 107 can maintain a stable mounting posture when the transmission chains 106 are cyclically moving.

[0063] A comb body 201 is fixedly disposed between the two connecting seats 200. The comb body 201 extends along the width direction of the frame 100, and its lower edge has a comb-shaped structure for inserting into the flower cluster, so as to separate and lift the mature chrysanthemums.

[0064] To prevent flowers from falling off the front or top of the comb teeth during harvesting due to acceleration, inertia, or vibration of the transmission chain 106, a comb tooth baffle 202 is fixedly installed on the comb tooth body 201. The comb tooth baffle 202 is arranged along the upper side of the comb tooth body 201 to form a limiting surface, ensuring that the harvested chrysanthemums can reliably remain on the comb tooth body 201 after being lifted from the plant until they enter the subsequent collection area. Through this structure, the harvesting comb teeth 107 maintain good load-bearing capacity and limiting performance during movement with the transmission chain 106, improving material stability during harvesting and reducing the premature falling of flowers due to vibration.

[0065] In this embodiment, the limiting component adopts an inner and outer double-layer limiting structure to form a limiting groove 206 for constraining the limiting slide bar 207. Specifically, the limiting component includes an inner limiting member 203 arranged along the front inclined section 102 and the rear inclined section 103. The inner limiting member 203 extends continuously from the lower region of the rear inclined section 103 to the upper part of the front inclined section 102, and is further fixedly connected to the straight section 104 of the frame 100, so that its entire structure is arranged along the running path of the picking comb 107.

[0066] To enable the limiting groove 206 to have guiding capability, an inner limiting member 203 and an outer limiting member 204 are installed on the support part 101 via a connecting piece 205, thereby maintaining a constant distance between the outer limiting member 204 and the inner limiting member 203 through the connecting piece 205. The inner limiting member 203 and the outer limiting member 204 form a narrow limiting groove 206.

[0067] Two limiting slide rods 207 are fixed on the connecting seat 200 of the picking comb 107. The limiting slide rods 207 extend along the width direction of the frame 100, and their free ends extend into the limiting slide grooves 206. As the transmission chain 106 drives the picking comb 107 to move, the limiting slide rods 207 slide in the limiting slide grooves 206, thereby limiting the tilt angle and posture of the picking comb 107 and preventing the picking comb 107 from deflecting violently due to inertia. Through the cooperation of the double-layer limiting structure, this embodiment can ensure that the picking comb 107 maintains a stable posture in the straight running range of the transmission chain 106, improve the posture consistency when inserting into the flower bed, and enhance the smoothness of the machine operation.

[0068] In another embodiment, the limiting structure of the picking comb teeth 107 is not limited to being composed of two independent limiting slide rods 207. To further simplify the number of parts and reduce assembly difficulty, the connecting seat 200 can also be configured as an integrally formed limiting block. The length direction of this limiting block is arranged along the length direction of the limiting slide groove 206, its lateral length is greater than the width of the limiting slide groove 206, and its shape is adapted to the groove shape of the limiting slide groove 206, so that it can slide stably within the limiting slide groove 206 when it moves with the transmission chain 106. Since the lateral dimension of the integral limiting block is fixed and significantly larger than the width of the limiting slide groove 206, when the picking comb teeth 107 are subjected to inertia or collision force and attempt to flip or twist, the side wall of the limiting block will abut against the side wall of the limiting slide groove 206, thereby preventing the picking comb teeth 107 from rotating around the axis of the connecting seat 200, achieving the same limiting effect as the double limiting rod structure.

[0069] Furthermore, because the transmission chain 106 undergoes a sudden change in direction when entering the front inclined section 102, the picking comb 107 will experience an instantaneous rotation exceeding the theoretical angle due to inertia at this turning point. If the limiting structure maintains a straight channel at this point, the limiting slide 207 may interfere with the limiting member due to excessive rotation angle, causing posture oscillations or even damage. Therefore, in this embodiment, to adapt to the posture changes in this area, the outer limiting member 204 forms an arc-shaped channel structure at both ends of the front inclined section 102. This arc-shaped channel is designed according to the actual movement trajectory of the limiting slide 207 at the turning point of the front inclined section 102, allowing the limiting slide 207 to pass smoothly without angle constraints when the transmission chain 106 changes its direction of operation, thereby avoiding impacts and jamming caused by forced limiting.

[0070] Furthermore, the section between the tension wheel 309 and the rear inclined section 103 lacks a limiting groove 206. In this area, the harvesting device hangs freely due to its own weight, and the end of the limiting rod 207 temporarily deviates from the groove position. To ensure that the limiting rod 207 returns to the limiting groove 206 when it enters the upper part of the rear inclined section 103 with the transmission chain 106, the outer limiting member 204 has a guide section extending away from the support part 101 near the upper part of the rear inclined section 103. The free end of this guide section is located on the suspended movement trajectory of the limiting rod 207. When the harvesting comb 107 moves upward with the transmission chain 106, the limiting rod 207 first contacts the inclined surface of the guide section and slides inward under guidance, eventually smoothly entering the limiting groove 206. By setting this guide section, even if the limiting slide bar 207 is briefly disengaged from the slide groove below, it can be restored to the limited state during the upward movement, thereby ensuring that the posture of the picking comb tooth 107 is stable in a timely manner and maintaining the continuity of the limiting function.

[0071] It should be noted that this embodiment employs a double-layer limiting structure composed of an inner limiting member 203 and an outer limiting member 204 to achieve higher posture constraint stability. However, in other embodiments, the inner limiting member 203 can be simplified according to processing, installation, or cost requirements. When the outer limiting member 204 and the support portion 101 can independently form a limiting groove 206, the inner limiting member 203 may not be required, and the basic limiting function can be achieved by the outer limiting member 204 alone cooperating with the support portion 101. In this case, the limiting groove 206 can be formed by the gap between the outer limiting member 204 and the frame 100 body, thereby ensuring that the limiting rod 207 is controlled in the critical operating section even with a simplified structure. This utility model does not limit this aspect.

[0072] In this embodiment, the drive mechanism includes multiple drive shafts 300 arranged at different positions on the support portion 101, used to support and guide the drive chain 106 covering the outside of the support portion 101. Specifically, at least three drive shafts 300 are provided, respectively installed at the intersection of the front inclined section 102 and the rear inclined section 103, the intersection of the front inclined section 102 and the straight section 104, and the intersection of the rear inclined section 103 and the straight section 104. Each drive shaft 300 is rotatably connected to the corresponding support portion 101 through a bearing, enabling low-resistance rotation under the drive of the drive shaft 300.

[0073] Each drive shaft 300 is fixedly equipped with a drive sprocket 301, and the drive chain 106 meshes with each drive sprocket 301. By setting the drive shaft 300 and drive sprocket 301 at the intersection of each inclined section and straight section 104, the drive chain 106 can achieve a smooth direction change when passing through the contour of the zigzag support 101, reducing the risk of the drive chain 106 jumping and derailing at corners. At the same time, each drive sprocket 301 provides support and transition for the drive chain 106 during operation, which is conducive to the stable cyclic operation of the picking comb 107 along the predetermined path, thereby improving the reliability and smoothness of the overall drive transmission.

[0074] In this embodiment, the drive mechanism further includes a motor 302 mounted on the frame 100. The motor 302 is fixedly mounted on the straight section 104 in the support 101, and a drive sprocket is provided on its output shaft. The drive sprocket meshes with a driven sprocket on one of the transmission shafts 300 through a drive chain 303, so that the power of the motor 302 can be transmitted to the transmission shaft 300 through the drive chain 303, thereby driving the transmission chain 106 to circulate along the contour of the support 101.

[0075] To ensure the tension of the drive chain 106 during operation and to compensate for chain slack during long-term operation, a tensioning mechanism is provided on the frame 100. The tensioning mechanism includes a tensioning shaft 308 rotatably connected to the frame 100 via bearings. A tensioning pulley 309 is fixedly mounted on the outer periphery of the tensioning shaft 308, and the tensioning pulley 309 meshes with the drive chain 106. The tensioning pulley 309 increases the tension of the drive chain 106, ensuring that the drive chain 106 always maintains a suitable meshing state and preventing chain skipping, vibration, or poor meshing.

[0076] In another embodiment, the mounting position of the tensioning shaft 308 on the frame 100 can be configured as an adjustable structure. A strip-shaped mounting hole can be provided on the mounting base of the tensioning shaft 308, and both ends of the tensioning shaft 308 are inserted and fixed in the strip-shaped mounting hole by fasteners. During adjustment, the fasteners are loosened, allowing the tensioning shaft 308 to slide along the extension direction of the strip-shaped mounting hole, thereby changing the center height between the tensioning wheel 309 and the adjacent sprocket, thus adjusting the tension of the transmission chain 106. After adjustment, the fasteners are tightened again to lock the tensioning shaft 308 in the target position, ensuring that the transmission chain 106 maintains a stable tension and good meshing effect during long-term operation.

[0077] Furthermore, at the end of the straight section 104, an adjustable limiting member is provided between the outer limiting member 204 and the inner limiting member 203 to compensate for changes in the running position of the transmission chain 106 caused by tension adjustment. Because the tensioning mechanism causes the running trajectory of the transmission chain 106 to deviate near the end of the straight section 104 when adjusting the tension of the transmission chain 106, the position and tilt of the limiting slide bar 207 will also change when the picking comb tooth 107 moves upward to this area with the chain. The adjustable limiting member adjusts the groove exit direction of the limiting slide bar 207 in this end area, ensuring that the picking comb tooth 107 can be reliably guided back to the limiting slide groove 206 under different tension conditions, thereby ensuring that the picking comb tooth 107 maintains a stable posture in the area above the support 101.

[0078] The adjustable limiting component includes a pair of guide rods 310, with the two guide rods 310 respectively positioned at the ends of the outer limiting component 204 and the inner limiting component 203. The front end of the upper guide rod 310 is rotatably connected to the outer limiting component 204 via a pivot, allowing it to swing around the end of the outer limiting component 204. The front end of the lower guide rod 310 is rotatably connected to the inner limiting component 203 via another pivot, allowing it to swing around the end of the inner limiting component 203. The rear sections of both guide rods 310 are hinged to a column 311, which is installed in the upper region of the support 101. The column 311 constrains the hinge position of the two guide rods 310, ensuring that the two guide rods 310 are substantially parallel and spaced apart from each other.

[0079] Specifically, the design incorporates flexibility to accommodate changes in the transmission chain 106 angle caused by the tensioning mechanism. When the chain angle changes, the angle of the guide rod 310 can be precisely adjusted by changing the fixed position of the column 311 on the support 101 and the fixed position of the column 311 relative to the guide rod 310, ensuring that it matches the current angle of the transmission chain 106. This adjustable design effectively addresses chain angle changes under different operating conditions, ensuring the stability and efficiency of the device.

[0080] In the specific design, there is a section without a fixed limiting component between the tension wheel 309 and the adjacent transmission sprocket 301. Whether an adjustable limiting component is needed for this section depends on the relationship between the center distance of this section and the length of the picking comb tooth 107. When the center distance between the tension wheel 309 and the adjacent transmission sprocket 301 is greater than the length of the picking comb tooth 107, the picking comb tooth 107 will fall entirely into this section. Due to the lack of limiting support, the comb tooth will swing downwards significantly under its own weight, which may lead to instability or interference with the transmission shaft 300. Therefore, an adjustable limiting component is needed to guide the limiting slide bar 207 of the comb tooth, so that the comb tooth can re-enter the limiting slide groove 206 within this section.

[0081] When the center distance between the tensioning pulley 309 and the adjacent drive sprocket 301 is less than the length of the picking comb tooth 107, one end of the picking comb tooth 107 will have already crossed the adjacent drive sprocket 301 when it reaches this section. Even if no limiting structure is provided in the middle area, its drooping part will naturally rest against the shaft of the drive sprocket 301, and no dead point will be formed. Therefore, there is no need to provide an adjustable limiting component. Through the above determination method, the installation side of the adjustable limiting component can be flexibly determined according to the specific arrangement position of the tensioning pulley 309, avoiding the repeated setting of limiting structures in unnecessary sections, thereby reducing the overall manufacturing cost and simplifying the structure.

[0082] In other embodiments, when no tensioning mechanism is provided and the length of the transmission chain 106 remains constant, the adjustable limiting member can also be omitted as needed. In this case, the running posture of the picking comb 107 can be constrained by simply forming a continuous limiting groove 206 with the inner limiting member 203 and the outer limiting member 204 connected end to end. This utility model is not limited to the specific form shown in this embodiment.

[0083] In this embodiment, the chrysanthemum harvester also includes a debris removal mechanism disposed on the support 101, used to cut off residual flower stems attached to the flowers during the harvesting process, thereby reducing the probability of impurities entering the collection frame 108. The debris removal mechanism includes a fixing frame 304 and a cutting mechanism, wherein the fixing frame 304 is fixedly installed on the front inclined section 102 of the support 101, so that it is located below the running path of the harvesting comb 107 after it has finished harvesting and enters the area of ​​the front inclined section 102.

[0084] To ensure a stable angle of inclination for the picking comb 107 as it passes through the inclined section 102, the position of the fixing frame 304 relative to the inclined section 102 positions the cutting mechanism at an appropriate distance below the picking comb 107. When the picking comb 107, carrying the flower, moves upward past the fixing limiter and into the inclined section 102, its angle remains constant under the constraint of the fixing limiter, thus exposing the flower stem portion extending below the picking comb 107 to the location of the cutting mechanism. Driven by the drive mechanism, the cutting mechanism generates a reciprocating or rotating cutting motion, which can cut off the exposed flower stem fragments below the comb teeth, achieving a cleanup effect.

[0085] In a typical configuration, the cutting mechanism can take the form of a hedge trimmer, comprising a cutting assembly consisting of a fixed blade 305 and a reciprocating moving blade 306. The moving blade 306 is driven by an independent drive unit 307 (such as a linear motor 302) and reciprocates left and right within the tooth grooves of the fixed blade 305, thereby completing the rapid cutting of the flower stalk.

[0086] In this embodiment, the collecting component is located in the area above the frame 100, and is used to orderly guide the chrysanthemums that have been separated from the plants by the picking comb 107 into the collecting frame 108, realizing continuous transfer from picking to centralized collection. The collecting component includes a horizontal conveying mechanism and a vertical conveying mechanism, which are connected end to end to form a conveying path of "first horizontal conveying, then vertical lifting", so that the chrysanthemums pass through the horizontal conveying mechanism and the vertical conveying mechanism in sequence before entering the collection frame 108.

[0087] Specifically, the transverse conveying mechanism includes a barrier 400 fixed to the support 101, which is formed by integrally bending a main baffle and side baffles. The main baffle is arranged along the direction of the chrysanthemum drop and is used to support the chrysanthemums falling from the picking comb 107; the side baffles are folded upwards on both sides of the main baffle to restrict the lateral movement of the chrysanthemums. Because the side baffles and the main baffle form a certain angle, the barrier 400 as a whole has a stable guiding boundary, allowing the chrysanthemums to be reliably intercepted and slid along the direction of the main baffle after falling into the barrier area, preventing them from falling off the outside of the frame 100 due to machine vibration or material deviation.

[0088] The enclosure 400 is located at the intersection of the front inclined section 102 and the straight section 104. One end of the enclosure extends along the direction of the straight section 104 towards the middle of the straight section 104, and the other end extends along the direction of the front inclined section 102 to the intersection of the front inclined section 102 and the rear inclined section 103. The enclosure 400 forms a side rail that is roughly parallel to the running trajectory of the picking comb 107, used to limit the area where chrysanthemums fall and prevent chrysanthemums from scattering on both sides of the frame 100. A horizontal frame 401 is fixedly connected to the upper end of the enclosure 400 on the support part 101. A receiving plate 402, which is inclined along the conveying direction, is provided in the middle of the horizontal frame 401. The upper edge of the receiving plate 402 is connected to the upper end of the enclosure 400 to form a receiving surface that is slightly inclined downward from the picking area into the frame 100. The receiving plate 402 arranged in this way can guide the chrysanthemums to gather in the middle of the side by their own weight when they fall off the picking comb 107, reducing the dispersion of the chrysanthemums in the side and facilitating subsequent transportation.

[0089] The transverse conveying mechanism also includes a transverse conveyor belt 403 located at the bottom of the transverse frame 401. The transverse conveyor belt 403 is arranged along the width direction of the support 101, with its upper surface close to or slightly lower than the lower surface of the receiving plate 402. The transverse conveyor belt 403 is driven continuously by an independent drive mechanism, capable of supporting chrysanthemums that fall into the receiving plate 402 and slide off its edge on the conveyor belt, and stably conveying them laterally to the feed inlet of the vertical conveying mechanism. By setting the transverse conveyor belt 403 below the receiving plate 402, the chrysanthemums are transformed from "free fall" to "belt conveying," reducing mechanical damage caused by repeated falls, while making the material flow more controllable and preventing chrysanthemums from accumulating and knotting inside the frame 100.

[0090] In the operation of this embodiment, when the picking comb 107 travels with the transmission chain 106 to the area above the support 101, the picking comb 107 flips, and the chrysanthemum material on it falls off due to gravity. Since a barrier 400 and a receiving plate 402 are arranged at the intersection of the inclined section 102 and the straight section 104, the falling chrysanthemums are first intercepted by the receiving plate 402 and fall onto its inclined surface. Under the action of the slope of the receiving plate 402, the chrysanthemums automatically gather towards the inside of the frame 100 and the middle of the transverse direction. On the one hand, this avoids the chrysanthemums falling directly to the outside of the frame 100 and causing loss. On the other hand, it reduces the collision height between the flowers and the metal parts, thereby reducing the petal breakage rate. Subsequently, the chrysanthemums slide from the lower edge of the receiving plate 402 onto the transverse conveyor belt 403 and are smoothly transported by the transverse conveyor belt 403 to the entrance position of the vertical conveyor mechanism. During this process, the chrysanthemums always move in a single layer or thin layer, which helps to prevent blockage caused by pile-up.

[0091] When the chrysanthemums move along the horizontal conveyor belt 403 to the lower end of the vertical conveyor mechanism, the vertical conveyor mechanism takes over and transports them upwards, lifting the chrysanthemums vertically to the upper position of the collecting frame 108, where they naturally fall into the collecting frame 108 by gravity. Through the segmented design of horizontal and vertical conveying, this embodiment achieves a continuous conveying path from the picking point to the collecting frame 108. This avoids the chrysanthemums scattering in the intermediate stages, reduces manual handling, improves the automation level and operational efficiency of the entire machine, and reduces collisions and compression of the flowers during transport, thus helping to maintain the appearance integrity and commercial quality of the harvested chrysanthemums.

[0092] In this embodiment, the vertical conveying mechanism is used to lift the chrysanthemums from the end of the horizontal conveyor belt 403 upwards and finally transport them into the collection frame 108, forming a vertical transfer path for the chrysanthemums from the picking end to the centralized collection end.

[0093] The vertical conveying mechanism includes a transition frame 404 fixed to the side of the frame 100. The transition frame 404 is located on the outside of the end of the horizontal conveyor belt 403 and includes a transition slide plate 405. The transition slide plate 405 is arranged below the end of the horizontal conveyor belt 403 to receive the chrysanthemums that slide off from the end of the horizontal conveyor belt 403 and to smoothly guide the chrysanthemums into the vertical conveying area.

[0094] Two vertically extending fixing members 406 are further fixed to the frame 100. These two vertical fixing members 406 extend upward from the frame 100 to the top of the collecting frame 108, providing the main support structure for the vertical conveying mechanism. Vertical baffles 407 are respectively provided on the sides of the two vertical fixing members 406, forming the left and right side walls of the vertical conveying cavity between them, which are used to prevent the chrysanthemums from scattering from both sides of the conveying path during vertical conveying.

[0095] In another embodiment, the arrangement of the transition frame can be adjusted according to the installation space of the overall structure. Specifically, the transition frame 404 does not necessarily have to be installed on the side of the frame 100; it can also be set on the side of the vertical fixing member 406. In this case, the transition slide plate 405 is correspondingly arranged in the lower area of ​​the side of the vertical fixing member 406, so that the petals from the end of the horizontal conveyor belt 403 fall directly onto the transition slide plate 405 after sliding down, and are guided into the upper inlet of the vertical conveyor belt 407 along the inclined direction of the transition slide plate 405. By setting the transition frame 404 on the side of the vertical fixing member 406, the horizontal distance between the horizontal and vertical conveyors can be further shortened, the free fall difference of the petals between the two conveyor sections can be reduced, the stability of the petals when they are guided into the vertical conveyor belt can be improved, and the petals can be prevented from scattering or jumping out of the conveying path, thereby improving the overall collection efficiency.

[0096] A vertical conveyor belt 408 is disposed between two vertical baffles 407. The vertical conveyor belt 408 is arranged around the drive wheels located at the upper and lower ends of the vertical fixing member 406, and can continuously circulate around the drive wheels. Multiple conveyor belt teeth 409 are evenly arranged on the outer side of the vertical conveyor belt 408, which can support the chrysanthemums when the conveyor belt moves upward, so that the chrysanthemums are lifted step by step with the conveyor belt. With the support of the teeth, the chrysanthemums can maintain a stable posture in the vertical direction, be conveyed step by step to the upper end of the vertical conveying mechanism, and finally fall into the collection frame 108.

[0097] In this embodiment, to prevent chrysanthemums from slipping off in front of the guide teeth due to conveyor belt vibration or unstable flower posture after entering the vertical conveyor belt, anti-fall teeth 410 are also fixedly installed at the bottom of the transition frame 404. The anti-fall teeth 410 are arranged along the moving path of the conveyor belt guide teeth 409, and their position corresponds to the running path of the guide teeth, forming a limiting edge in front of them when the guide teeth pass. The anti-fall teeth 410 have a toothed structure, and the spacing can be designed according to the height of the guide teeth and the size of the chrysanthemums to ensure that the chrysanthemums supported by the guide teeth can be reliably held on the guide teeth during lifting.

[0098] In this embodiment, to ensure that the picking comb teeth 107 remain clean after completing one picking cycle and to prevent chrysanthemums from remaining between the comb teeth for an extended period and affecting the next picking effect, a fixing rod 411 is fixedly installed on the straight section 104 of the support part 101. The fixing rod 411 is arranged laterally at the top of the straight section 104, and several rows of brushes 412 are fixed to the top of the fixing rod 411. The brushes 412 can be made of highly flexible nylon bristles or elastic resin strips, which can ensure the cleaning effect on the chrysanthemums without damaging the comb tooth structure.

[0099] When the picking comb 107 moves with the transmission chain 106 to the straight section 104 area, the tip of its brush teeth will make slight contact with the bristles 412. The bristles 412 form a flexible sweep in the direction of comb tooth movement, which can sweep away the chrysanthemums and petals remaining between the comb teeth in time, so that they fall naturally to the horizontal conveyor mechanism below.

[0100] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A comb-tooth limiting chrysanthemum harvesting machine, characterized in that, include: The frame (100) includes two sets of support parts (101), each set of support parts (101) having a front inclined section (102) and a rear inclined section (103) extending in different directions, the upper ends of the two being connected by a straight section (104), and the two sets of support parts (101) being connected by a plurality of connecting crossbars (105). A drive component is provided on the support (101), the drive component includes a drive mechanism and a transmission chain (106) arranged along the outside of the support (101), and the transmission chain (106) is provided with picking comb teeth (107). A limiting component provided on the support (101) is used to limit the movement of the picking comb (107) along a preset path and angle; A collection frame (108) provided on the frame (100) is used to collect materials.

2. The comb-tooth limiting chrysanthemum harvesting machine according to claim 1, characterized in that, The picking comb (107) includes two connecting seats (200), which are fixed on the corresponding transmission chain (106). A comb body (201) is fixed between the two connecting seats (200), and a comb baffle (202) is fixed on the comb body (201).

3. A comb-tooth limiting chrysanthemum harvesting machine according to claim 2, characterized in that, The limiting component includes an inner limiting member (203) and an outer limiting member (204). The inner limiting member (203) is arranged along the front inclined section (102) and the rear inclined section (103) and extends to the upper part of the front inclined section (102) and is fixed to the straight section (104). A connecting piece (205) is fixed on the support part (101), and the inner limiting member (203) and the outer limiting member (204) are fixed on the connecting piece (205). A limiting groove (206) is formed between the inner limiting member (203) and the outer limiting member (204). The connecting seat (200) is fixed with a limiting slide rod (207), the end of which extends into the limiting slide groove (206). The outer limiting member (204) has an arc-shaped channel portion (208) to provide passage space for the limiting slide rod (207) to rotate when the transmission chain (106) changes direction.

4. A comb-tooth limiting chrysanthemum harvesting machine according to claim 3, characterized in that, The drive mechanism includes a plurality of drive shafts (300) rotatably connected to the support (101), at least three of which are fixed at the intersection of the front inclined section (102) and the rear inclined section (103), the intersection of the front inclined section (102) and the straight section (104), and the intersection of the rear inclined section (103) and the straight section (104), respectively. The drive shaft (300) is rotatably connected to the support part (101) via a bearing. The drive shaft (300) is provided with a drive sprocket (301), and the drive chain (106) meshes with the drive sprocket (301).

5. A comb-tooth limiting chrysanthemum harvesting machine according to claim 4, characterized in that, The drive mechanism also includes a motor (302) fixed on the frame (100), and a drive chain (303) is provided between the output shaft of the motor (302) and one of the transmission shafts (300). The frame (100) is provided with a tensioning mechanism, which includes a tensioning shaft (308) rotatably connected to the frame (100), and a tensioning wheel (309) fixed on the tensioning shaft (308) and meshing with the transmission chain (106); The outer limiting member (204) and the inner limiting member (203) are rotatably connected to an adjustable limiting member at the end of the straight section (104). The adjustable limiting member includes a pair of guide rods (310). The upper guide rod (310) is rotatably connected to the outer limiting member (204), and the lower guide rod (310) is rotatably connected to the inner limiting member (203). A column (311) is fixed on the upper part of the support part (101), and the guide rod (310) is hinged to the column (311).

6. A comb-tooth limiting chrysanthemum harvesting machine according to claim 1, characterized in that, It also includes a cleaning mechanism, which is mounted on the support (101); The impurity removal mechanism includes a fixed frame (304) and a cutting mechanism. The fixed frame (304) is fixed on the front inclined section (102) of the support (101). The cutting mechanism is provided on the fixed frame (304). The cutting mechanism includes a fixed blade (305) arranged along the width direction of the support (101) and a movable blade (306) that reciprocates linearly relative to the fixed blade (305). The movable blade (306) is connected to a drive member (307) and is used to cut the flower stem located below the picking comb (107) after the picking comb (107) lifts the chrysanthemum away from the plant.

7. A comb-tooth limiting chrysanthemum harvesting machine according to claim 1, characterized in that, A collection component is provided between the collection frame (108) and the frame (100) for receiving and conveying materials into the collection frame (108) when the picking comb (107) moves along the support (101) to a predetermined position; The collection component includes a horizontal conveying mechanism and a vertical conveying mechanism. The chrysanthemums are sequentially conveyed through the horizontal conveying mechanism and the vertical conveying mechanism to reach the collection frame (108). The transverse conveying mechanism includes a barrier (400) fixed to the support (101), located at the intersection of the front inclined section (102) and the straight section (104), with one end extending toward the middle of the straight section (104) and the other end extending toward the intersection of the front inclined section (102) and the rear inclined section (103). A transverse frame (401) is also connected to the support (101), located at the upper end of the barrier (400). The transverse frame (401) has an inclined support plate (402) that is connected to the upper end of the barrier (400). The horizontal conveying mechanism also includes a horizontal conveyor belt (403) located at the bottom of the horizontal frame (401) for conveying the chrysanthemums that fall into the receiving plate (402) to the vertical conveying mechanism.

8. A comb-tooth limiting chrysanthemum harvesting machine according to claim 7, characterized in that, The vertical conveying mechanism includes a transition frame (404) fixed to the side of the frame (100) and located at the end of the horizontal conveyor belt (403). The transition frame (404) has a transition slide plate (405) located below the end of the horizontal conveyor belt (403). A vertical fixing member (406) is fixed on the frame (100) and extends upward to the top of the collecting frame (108). There are two vertical fixing members (406), each connected to a vertical baffle (407). A vertical conveyor belt (408) is provided between the two vertical fixing members (406) and located between the two vertical baffles (407), and a plurality of conveyor belt teeth (409) are provided on it.

9. A comb-tooth limiting chrysanthemum harvesting machine according to claim 8, characterized in that, The bottom of the transition frame (404) is fixed with anti-fall teeth (410), which are located on the moving path of the conveyor belt stop teeth (409).

10. A comb-tooth limiting chrysanthemum harvesting machine according to claim 1, characterized in that, A fixing rod (411) is fixed on the straight section (104) of the support part (101), and a brush (412) is provided on the fixing rod (411).

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