A jasmine seedling pruning device

Abstract

A jasmine seedling pruning device mainly includes a workbench, blade holders, scissor blades, a limiting guide device, compression springs, connecting rod A, connecting rod B, a footrest, and table legs. The workbench features a dual-blade synchronous cutting structure. Scissor blades are fixed on the two blade holders, and limiting guide devices are connected to both sides. Compression springs are installed on the limiting guide devices. The lower guide rod is hinged to the transverse connecting rod A. The middle position of the transverse connecting rod A is hinged to the upper end of the lower connecting rod B. The lower end of the connecting rod B is hinged to the middle of both ends of the footrest. The end of the footrest is hinged to a fixed block welded to the table legs. This utility model patent provides a jasmine seedling pruning device that achieves a technical balance in efficiency, cost, and ease of use through a parallel dual-scissor blade layout, a modular positioning system, and a mechanized batch processing and human-machine collaborative design that integrates ergonomics and storage. This provides practical equipment support for large-scale jasmine seedling cultivation.

Description

Technical Field

[0001] This utility model relates to the field of cutting propagation technology, specifically a jasmine seedling pruning device. Background Technology

[0002] Jasmine is renowned for its fragrant aroma and has multiple uses, including ornamental, medicinal, edible, and tea-making purposes. Its Latin name is *Jasminum sambac* (L.) Ait., a member of the Oleaceae family and the *Jasminum* genus, belonging to the upright or climbing shrub family. The stem diameter of the mother plant is typically 3-8 mm, and the stem height is approximately 700-900 mm.

[0003] In jasmine cultivation, propagation by cuttings is the primary method. Therefore, it's necessary to cut the mother plant's stems into standardized cuttings of approximately 200mm, each retaining 2-3 buds and some leaves. Traditional manual pruning has the following drawbacks: 1. It relies on workers manually pruning single branches, resulting in an average daily pruning volume of less than 500 plants per person, leading to very low production efficiency that cannot meet the demands of large-scale cultivation; 2. Manual pruning is physically demanding, causing fatigue during prolonged work; 3. Significant errors in stem length during pruning result in a low rate of qualified cuttings.

[0004] Existing patents for automated jasmine seedling cutting, such as CN201610629579.7 (an automatic jasmine cutting stem cutting robot), integrate a tracked walking mechanism, a visual recognition system, and a pneumatic cutting mechanism. It can autonomously locate branches and complete the cutting operation. Its cutting device uses leaf-blocking components to separate leaves, stem-fixing airbags to secure branches, and a double-blade assembly for precise segmentation. Its core advantage is that the entire process is unmanned, with theoretical efficiency significantly higher than manual labor. However, it has fatal flaws: the equipment is extremely expensive, making it unaffordable for small and medium-sized growers; it has poor adaptability to complex terrain (such as slippery field surfaces); and maintenance requires professional technical support, making widespread adoption difficult.

[0005] Existing semi-automatic seedling pruning devices, such as patent CN202310398401.6 (a seedling pruning device), integrate a centering component, a leaf-removing cutter head, and a double-blade system. Excess leaves are removed by the trumpet-shaped cutter head of the first blade holder, while the annular groove of the second blade holder, in conjunction with an elastic element, cuts leaves near the buds. Finally, the pruning component completes the segmentation. Its innovation lies in automated sequential processing (leaf removal → leaf trimming → branch trimming), with detection elements locating buds to reduce the rate of accidental damage. However, it has significant drawbacks: its complex structure leads to high costs; its reliance on electric drive limits its applicability; and its processing speed is still constrained by single-branch production lines, preventing the realization of batch synchronous pruning.

[0006] Analysis of the aforementioned patents and traditional manual pruning reveals the following common bottlenecks in current jasmine seedling pruning techniques:

[0007] 1. Imbalance between efficiency and cost: Highly efficient automated equipment (such as pruning robots) costs tens of thousands of yuan, far exceeding the affordability of small and medium-sized growers; while low-cost manual tools cannot meet the demand for production of hundreds of millions of units.

[0008] 2. Lack of batch processing capability: Existing patents are all designed for sequential operation of single branches, lacking mechanical structures for simultaneous cutting of multiple branches, resulting in a significant efficiency ceiling.

[0009] 3. Length positioning relies on manual labor: Except for fully automatic robots, most tools require additional measurement steps, and the low integration of positioning baffles or guiding mechanisms affects standardized production;

[0010] 4. Insufficient ergonomic optimization: Traditional pruning shears require repeated bending and applying force, which can easily lead to worker fatigue; while electric devices reduce the load, they introduce the risk of cable entanglement.

[0011] 5. Limited adaptability: Automated equipment is mostly preset with a branch diameter range (e.g., 5-8mm), which is not effective for treating old branches (diameter > 10mm) or young branches (diameter < 3mm);

[0012] 6. Complex maintenance: Precision detection components (such as spore sensors and cameras) have a high failure rate in dusty environments, which greatly increases maintenance costs.

[0013] With the annual demand for jasmine seedlings exceeding hundreds of millions, the development of efficient mechanized pruning equipment has become an urgent need for industrial upgrading. Summary of the Invention

[0014] To address the aforementioned industry bottlenecks, this utility model patent provides a jasmine seedling pruning device. By adopting a parallel double scissor blade layout, a modular positioning system, and a mechanized batch processing and human-machine collaborative design that integrates ergonomics and storage, it achieves a technical balance in terms of efficiency, cost, and ease of use, providing practical equipment support for large-scale jasmine seedling cultivation.

[0015] To achieve the above objectives, the technical solution of this utility model is as follows:

[0016] A jasmine seedling pruning device mainly includes a workbench, a blade holder, scissor blades, a limiting guide device, a compression spring, connecting rod A, connecting rod B, a footrest, and table legs. The workbench is equipped with a double-blade synchronous shearing structure, with two blade holders. Scissor blades are fixed to the blade holders by bolts and nuts. Limiting guide devices are connected to both sides of the blade holders, and compression springs are installed on the limiting guide devices. The guide rod below the limiting guide device is hinged to the transverse connecting rod A. The middle position of the transverse connecting rod A is hinged to the upper end of the lower connecting rod B. The lower end of the connecting rod B is hinged to the middle of both ends of the footrest. The end of the footrest is hinged to a footrest fixing block welded to the table legs.

[0017] The blade holder and shear blades can be adjusted up and down using the limiting bolts of the limiting guide device. However, the blade holder and shear blades are always placed at an angle, with a slight angle between them and the workbench. After stepping on the pedal, pull the shear blades downwards and cut the mother branch diagonally from left to right, making the cutting easier.

[0018] When cutting older branches (diameter > 10mm), adjust the limiting bolt upwards; conversely, when cutting younger branches (diameter < 3mm), adjust the limiting bolt downwards.

[0019] The limiting and guiding device includes a limiting mounting beam, limiting bolts, limiting mounting columns, limiting blocks, guide blocks, and guide rods. The limiting and guiding device is attached to the guide blocks on both sides, and the guide blocks are connected to the limiting mounting columns by bolts. The bottoms of both are welded and fixed to the worktable. The two ends of the limiting mounting beam are fixed to the limiting mounting columns by bolts and nuts, and the limiting bolts pass through the middle part. The heads of the limiting bolts face down and are attached to the upper surface of the limiting blocks. Nuts are screwed on both sides of the limiting mounting beam. The limiting blocks are hollow, with one end connected to the tool holder and the other end welded with a connecting rod C. The lower end is welded to the guide rod and passes through the guide hole machined on the worktable.

[0020] The guide block and guide rod serve a guiding function, ensuring that the scissor blades can move up and down in the vertical direction. The guide block is connected to the limiting mounting column by bolts to further strengthen the fixation of the guide block and prevent it from shifting under stress.

[0021] A compression spring is fitted onto connecting rod C, with its upper and lower ends respectively abutting the limiting block and the support block. The support block is fixed to the side of the worktable by bolts and nuts. Installing the compression spring ensures that the scissors automatically spring up after the foot pedal completes the cutting.

[0022] All connecting components in the hinged joint are pins, with holes at the ends of the pins for locking with cotter pins, ensuring reliable operation and easy disassembly.

[0023] A positioning mounting block is provided at the end of the workbench, and the positioning mounting block is fixed by bolts and nuts; the positioning baffle can be fitted into the positioning mounting block.

[0024] The two blade holders are 200mm apart, and the distance between the second blade holder and the adjustable positioning baffle is also 200mm; 200mm is the standard scion length. Therefore, by adopting a parallel double-blade layout combined with the adjustable positioning baffle, two 200mm standard scion sections can be cut with a single foot pedal action, eliminating manual measurement and ensuring precise cutting length and high efficiency. The detachable baffle design accommodates the production needs of scions of different specifications, enhancing the equipment's versatility.

[0025] When cutting scions of non-standard length, you can use the first pair of scissors to cut them separately, manually measure the length and cut, or you can install the positioning block and baffle at the front of the workbench, drill holes and fix them, or if the quantity is small, you can cut without drilling, manually measure the position of the baffle and cut.

[0026] A tool storage box is located on the right side of the workbench, secured with bolts and nuts. This box allows for centralized management of auxiliary tools such as measuring tapes, calipers, and pruning shears, optimizing workflow continuity.

[0027] The table legs are welded with support plates at the bottom to enhance the table's stability and load-bearing capacity.

[0028] The workbench, knife holder, footrest, and table legs are all welded from channel steel or rectangular steel, providing a certain structural strength while ensuring that the entire set of scissors equipment is not heavy and is easy to move.

[0029] The workbench is about 750mm high and the footrest is about 270mm high, which is ergonomically designed to prevent workers from repeatedly bending over and raising their feet too high when pedaling, thus reducing fatigue. The connecting rod B is longer, making it more time-saving and labor-saving when performing foot-operated cutting of tassels.

[0030] Advantages of this utility model:

[0031] 1. This utility model features a dual-blade synchronous cutting structure with a parallel double-scissor blade layout, combined with an adjustable positioning baffle. A single foot pedal action completes the cutting of two standard 200mm cuttings, increasing efficiency several times compared to manual labor. This design fills a technological gap in batch pruning in semi-automatic equipment.

[0032] 2. This utility model adopts a modular positioning system: the spacing between the scissor blades and the position of the baffle are preset according to the standard 200mm scion length, eliminating the manual measurement step; the detachable design of the baffle takes into account the production needs of scions of different specifications, enhancing the versatility of the equipment.

[0033] 3. This utility model integrates ergonomics and storage: foot pedal drive replaces hand force, reducing labor intensity; tool storage box is integrated on the right side of the workbench to centrally manage auxiliary tools such as measuring tapes, vernier calipers and gloves, optimizing workflow continuity.

[0034] 4. This utility model adopts a purely mechanical structure design, avoiding high-cost sensors and drive units. The equipment cost is only 1 / 10 of that of a fully automatic robot. It has low production cost, is easy to implement, and better meets the actual needs of small and medium-sized growers. Attached Figure Description

[0035] Figure 1 This is an elevation view of the jasmine seedling pruning device of this utility model;

[0036] Figure 2 for Figure 1 Enlarged structural diagram at point I;

[0037] Figure 3 for Figure 1 A bottom view at point I;

[0038] Figure 4 This is a front view of the jasmine seedling pruning device of this utility model;

[0039] Figure 5 This is a top view of the jasmine seedling pruning device of this utility model;

[0040] The numbers and component names in the diagram are as follows: 1-Workbench; 2-Tool holder; 3-Scissors blade; 4-Limiting guide device; 41-Limiting mounting beam; 42-Limiting bolt; 43-Limiting mounting column; 44-Limiting block; 45-Connecting rod C; 5-Guide block; 6-Compression spring; 61-Support block; 7-Guide rod; 8-Connecting rod A; 9-Connecting rod B; 10-Pin; 11-Cotter pin; 12-Foot bracket; 121-Foot bracket fixing block; 13-Table leg; 131-Table leg support plate; 14-Tool storage box; 15-Positioning mounting block; 16-Positioning baffle. Detailed Implementation

[0041] Example 1

[0042] A jasmine seedling pruning device mainly includes a workbench 1, a blade holder 2, scissor blades 3, a limiting guide device 4, a compression spring 6, a connecting rod A8, a connecting rod B9, a footrest 12, and table legs 13. The workbench 1 is equipped with a double-blade synchronous shearing structure, and two blade holders 2 are installed. Scissor blades 3 are fixed on the blade holders 2 by bolts and nuts. The limiting guide devices 4 are connected to both sides of the blade holders 2. Compression springs 6 are installed on the limiting guide devices 4. The guide rod 7 below the limiting guide device 4 is hinged to the transverse connecting rod A8. The middle position of the transverse connecting rod A8 is hinged to the upper end of the lower connecting rod B9. The lower end of the connecting rod B9 is hinged to the middle of both ends of the footrest 12. The end of the footrest 12 is hinged to the footrest fixing block 121 welded to the table legs 13.

[0043] The tool holder 2 and the shear blade 3 can be adjusted up and down by the limiting bolt 42 of the limiting guide device 4, but the tool holder 2 and the shear blade 3 are always placed at an angle, with a slight angle between them and the worktable 1.

[0044] The limiting and guiding device 4 includes a limiting mounting beam 41, limiting bolts 42, limiting mounting columns 43, limiting blocks 44, guide blocks 5, and guide rods 7. The limiting and guiding device 4 is attached to the guide blocks 5 on both sides, and the guide blocks 5 are connected to the limiting mounting columns 43 by bolts. The bottom of both of them are welded and fixed to the workbench 1. The two ends of the limiting mounting beam 41 are fixed to the limiting mounting columns 43 by bolts and nuts, and the limiting bolts 42 pass through the middle part. The heads of the limiting bolts 42 are attached to the upper surface of the limiting blocks 44 with their heads facing down, and nuts are screwed on both sides of the limiting mounting beam 41. The limiting blocks 44 are hollow, with one end connected to the tool holder 2, and the other end welded with a connecting rod C45. The lower end is welded and connected to the guide rods 7, passing through the guide holes machined on the workbench 1.

[0045] The compression spring 6 is sleeved on the connecting rod C45, with the upper and lower ends respectively attached to the limiting block 44 and the support block 61. The support block 61 is fixed to the side of the workbench 1 by bolts and nuts.

[0046] The connecting components of the hinged connection are all pins 10, and the end of the pin 10 has a hole for locking with a cotter pin 11.

[0047] The workbench 1 is provided with a positioning mounting block 15 at its end, and the positioning mounting block 15 is fixed by bolts and nuts; the positioning baffle 16 can be fitted into the positioning mounting block 15.

[0048] A tool storage box 14 is provided on the right side of the workbench 1, and the tool storage box 14 is fixed by bolts and nuts.

[0049] The end of the scissor blade 3 is sharp.

[0050] The bottom of the table leg 13 is welded with a table leg support plate 131.

Claims

1. A jasmine seedling pruning device, characterized in that: It mainly includes a workbench (1), a blade holder (2), a shear blade (3), a limiting guide device (4), a compression spring (6), a connecting rod A (8), a connecting rod B (9), a footrest (12), and a table leg (13). The workbench (1) is equipped with a double-blade synchronous shearing structure, and the two blade holders (2) are fixed with shear blades (3) by bolts and nuts. The blade holders (2) are connected to the limiting guide devices (4) on both sides. The limiting guide devices (4) are equipped with compression springs (6). The guide rod (7) below the limiting guide device (4) is hinged to the transverse connecting rod A (8). The middle position of the transverse connecting rod A (8) is hinged to the upper end of the lower connecting rod B (9). The lower end of the connecting rod B (9) is hinged to the middle of both ends of the footrest (12). The end of the footrest (12) is hinged to the footrest fixing block (121) welded on the table leg (13).

2. The jasmine seedling pruning equipment according to claim 1, characterized in that: The tool holder (2) and the shear blade (3) can be adjusted up and down by the limiting bolt (42) of the limiting guide device (4), but the tool holder (2) and the shear blade (3) are always placed at an angle, with a slight angle between them and the worktable (1).

3. The jasmine seedling pruning equipment according to claim 1, characterized in that: The limiting guide device (4) includes a limiting installation beam (41), a limiting bolt (42), a limiting installation column (43), a limiting block (44), a guide block (5), and a guide rod (7). The limiting guide device (4) is attached to the guide block (5) on both sides. The guide block (5) is connected to the limiting installation column (43) by bolts. The bottom of both of them is welded and fixed to the workbench (1). The two ends of the limiting installation beam (41) are fixed to the limiting installation column (43) by bolts and nuts. The middle part has a limiting bolt (42) passing through it. The head of the limiting bolt (42) is attached to the upper surface of the limiting block (44) with the head facing down. Nuts are screwed on both sides of the limiting installation beam (41). The limiting block (44) is hollow. One end is connected to the tool holder (2). The other end is welded with a connecting rod C (45). The lower end is welded to the guide rod (7) and passes through the guide hole processed on the workbench (1).

4. The jasmine seedling pruning equipment according to claim 1, characterized in that: The compression spring (6) is sleeved on the connecting rod C (45), with the upper and lower ends respectively attached to the limiting block (44) and the support block (61). The support block (61) is fixed to the side of the workbench (1) by bolts and nuts.

5. The jasmine seedling pruning equipment according to claim 1, characterized in that: The connecting components of the hinged connection are all pins (10), and the end of the pin (10) is opened and locked with a cotter pin (11).

6. The jasmine seedling pruning equipment according to claim 1, characterized in that: The workbench (1) is provided with a positioning mounting block (15) at its end, and the positioning mounting block (15) is fixed by bolts and nuts; the positioning baffle (16) can be fitted into the positioning mounting block (15).

7. The jasmine seedling pruning equipment according to claim 1, characterized in that: A tool storage box (14) is provided on the right side of the workbench (1), and the tool storage box (14) is fixed by bolts and nuts.

8. The jasmine seedling pruning equipment according to claim 1, characterized in that: The bottom of the table leg (13) is welded with a table leg support plate (131).

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