Sweet tea leaf picking device

Abstract

The utility model discloses a sweet tea leaf picking device, which belongs to the technical field of picking tools and comprises a grip, a rod body, a trigger, a scissor component and an inhaul cable. The shear assembly is installed at the front end of the rod body and comprises a shearing part, a quadrilateral shear fork structure used for driving the shearing part to be opened and closed and a spring used for supporting the shear fork structure to elastically reset. The inhaul cable is connected with the trigger and the shear fork structure, and when the trigger is pushed, the inhaul cable pulls the shear fork structure to promote the shearing part to execute shearing action; the convex block is arranged above the shearing part, and the clamping surface on the inner side of the convex block can synchronously clamp the sweet tea leaves during shearing, so that the sweet tea leaves are prevented from being hung in a shrub. The sweet tea picking device solves the technical problem of inconvenience in hand pricking during existing sweet tea picking, and greatly improves picking efficiency.

Description

Technical Field

[0001] This utility model relates to the field of harvesting tools, and in particular to a sweet tea harvesting device. Background Technology

[0002] Sweet tea ( Rubus chingii var. suavissimus *Rubus idaeus*, a plant belonging to the genus *Rubus* in the Rosaceae family, is naturally distributed mainly in the mountainous areas from Guilin to Wuzhou in central Guangxi. Studies have confirmed that the leaves of *Rubus idaeus* are rich in glycosides, possessing high sweetness and low calorie content. However, due to its thorny body, harvesters are easily pricked during manual picking, affecting not only harvesting efficiency but also potentially injuring their hands. Currently, there are no specialized tools for harvesting *Rubus idaeus* leaves. Other similar tools for harvesting thorny plants include a prickly pear harvesting device disclosed in Chinese patent application CN211482022U, which uses a lever-linked mechanical structure to achieve shearing harvesting and has a receiving bag at the front end of the harvesting shears to collect fallen prickly pears. This method is unsuitable for harvesting sweet tea leaves, mainly due to the following problems: First, sweet tea leaves have many branches and leaves, and are covered in thorns, making it easy for the harvesting bag to get caught on the thorns, affecting harvesting efficiency; second, due to the tangled branches and leaves and the obstruction of thorns, the cut branches and leaves of sweet tea leaves are easily caught in the sweet tea bushes, affecting extraction efficiency. Therefore, there is an urgent need to design a harvesting device suitable for efficient harvesting of sweet tea leaves. Utility Model Content

[0003] To address the aforementioned problems, one objective of this utility model is to provide a sweet tea leaf picking device to solve the technical problems of the prickly and inconvenient nature of existing sweet tea leaf picking processes, as well as the problem of the picked sweet tea leaves getting stuck, which affects the picking efficiency.

[0004] To achieve these objectives and other advantages of this utility model, this utility model provides a sweet tea leaf picking device, comprising:

[0005] grip;

[0006] The lever body connects to the grip and extends forward; a sliding trigger is located on the lower part of the lever body near the grip, which can be pushed with the index finger when the hand is gripping the grip.

[0007] A scissor assembly is disposed at the front end of the rod body. The scissor assembly includes: a cutting part, a quadrilateral scissor fork structure for driving the cutting part to open and close, and a spring for supporting the elastic return of the scissor fork structure.

[0008] The cable connects the trigger and the scissor mechanism. When the trigger is pushed, it pulls the scissor mechanism, causing the shearing part to open and close to perform the shearing action.

[0009] The protrusions are arranged on the shearing part, and the inner side of the protrusions is formed with clamping surfaces.

[0010] Preferably, the clamping surfaces of the two protrusions have a spacing when the shearing part is shearing, so as to prevent the sweet tea leaves from being clamped too much, and the spacing is usually controlled between 1-5mm.

[0011] Preferably, the protrusions are semicircular structures, the height is 3-10cm, the front end of the protrusion is provided with a sharp corner or a round corner, and the obstruction of stretching into the shrub is reduced.

[0012] Preferably, the inner side of the protrusion is provided with a rubber layer.

[0013] Preferably, the protrusion is a metal block or a plastic block, the metal block is integrally formed with the shearing part or is fixed on the shearing part through a screw, and the plastic block is fixed on the shearing part through adhesion or a screw.

[0014] Preferably, the protrusion is transparent plastic, which does not block the line of sight, and facilitates accurate alignment of the shearing position of the sweet tea leaves.

[0015] Preferably, the inner clamping surface of the protrusion is provided with a concave-convex point structure or a wave-shaped structure.

[0016] The utility model at least has following beneficial effects:

[0017] The rod body is designed, the user can operate at a certain distance, avoids direct contact of the body with the thorny branches and leaves of the sweet tea leaves, prevents being pricked, greatly guarantees the personal safety of the picker, the rod body extends forward, the picking range is expanded, the user does not need to be too close to the shrub of the sweet tea leaves or stretch the hand into the shrub, and different positions of the sweet tea leaves can be picked easily, which is convenient and fast, the linkage design of the trigger, the cable and the shearing fork structure enables the user to easily control the opening and closing of the shearing part by pushing the trigger with fingers, the shearing action is completed, the operation is simple, the picking efficiency is improved, and the protrusions arranged above the shearing part can clamp the sweet tea leaves synchronously when the shearing part is shearing, so as to prevent the sweet tea leaf branches and leaves after being cut from falling or hanging in the shrub, the sweet tea leaves are convenient to take out, and the picking efficiency is greatly improved.

[0018] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. DRAWINGS

[0019] Figure 1 It is a structural schematic view of the sweet tea leaf picking device.

[0020] Figure 2 It is the first kind of structure schematic view of the scissors assembly of the utility model;

[0021] Figure 3 It is the second kind of structure schematic view of the scissors assembly of the utility model;

[0022] Figure 4 It is the partial structure schematic view of the shearing part of the utility model;

[0023] Figure 5 It is the structure schematic view when the sweet tea leaf picking device picks sweet tea leaf of the utility model;

[0024] Figure 6 It is the first kind of structure schematic view of the utility model's convex block;

[0025] Figure 7 It is the second kind of structure schematic view of the utility model's convex block.

[0026] Among them, the handle 10, the rod body 20, the scissors assembly 30, the convex block 40, the cable 50, the trigger 60, the sliding block 70, the sweet tea leaf 80, the first pin shaft 301, the front connecting rod 302, the second pin shaft 303, the third pin shaft 304, the shearing part 305, the spring 306, the rear connecting rod 307, the clamping surface 401, the rubber layer 402, the concave-convex point 403, the wave-shaped structure 404, the stop block 405, the sliding groove 701, the limiting block 702. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail in combination with examples, so that the person skilled in the art can implement according to the description text.

[0028] As shown in FIG. 1-5, the utility model provides a kind of sweet tea leaf picking device, including handle 10, rod body 20, trigger 60, scissors assembly 30 and cable 50.

[0029] Handle 10 adopts the shape in line with ergonomics design, surface preferably is provided with antiskid line, it is convenient for user to hold comfortably and stably.The one end of rod body 20 is connected with handle 10 by welding or high-strength bolt, it is guaranteed that connection is firm and reliable, rod body 20 extends forward, its length is designed according to actual use demand, generally 20-80 centimeters, it is convenient for user to carry out picking operation outside certain distance.

[0030] A slideable trigger 60 is arranged at the lower part of the rod 20 near the handle 10. The top of the trigger 60 is provided with a slider 70. The rod can be arranged in a flat or circular or square hollow structure or other structure. In the example, the rod 20 adopts a hollow structure, and the rod has an installation space inside. The slider 70 can be arranged inside the rod 20. The four-edge scissor structure of the scissor assembly 30 can also be partially accommodated inside the rod 20. When other solid structures such as plates are used, the slider 70 can be arranged on the surface. In the example, the slider cooperates with a sliding groove 701 arranged inside the rod 20. The sliding groove 701 is made of smooth metal material. The trigger 60 can smoothly slide on the sliding groove 701. When the user holds the handle 10, the index finger or middle finger can be naturally placed on the trigger 60, facilitating the pushing of the trigger 60. At the same time, a limiting block 702 can be arranged on the sliding groove 701 to prevent the trigger 60 from sliding excessively. In the example, the rod can adopt a circular pipe or square pipe with a diameter or width of 2-8 cm.

[0031] The scissor assembly 30 is arranged at the front end of the rod 20. The four-edge scissor structure in the scissor assembly 30 is composed of four connecting rods, including two front connecting rods 302 and two rear connecting rods 307. The four connecting rods are hingedly connected to each other through a first pin shaft 301, a second pin shaft 303, and a third pin shaft 304 to form a four-edge shape. The four-edge scissor structure has good stability. When the branches and leaves of the shrub collide, the shape and position can also be relatively stable, which is helpful for accurate cutting. In the example, the first pin shaft 301 is rotationally connected to the front end of the rod 20, so that the front connecting rod 302 can only rotate and cannot move forward and backward or left and right. The front end of the front connecting rod 302 protrudes from the front end of the rod 20, forming two movable scissor arms at the front end of the four-edge scissor structure. The cutting part 305 includes two blades, which are respectively connected and fixed (such as bolted or welded) or integrally formed on the two movable scissor arms at the front end of the four-edge scissor structure. The opening and closing of the blades are driven by the deformation of the four-edge scissor structure to realize the cutting action. One end of the spring 306 is connected to the fixed point of the first front connecting rod 302, and the other end is connected to the fixed point of the second front connecting rod 302. When the spring 306 is in a natural state, it can support the four-edge scissor structure to maintain an open state, i.e., the two blades of the cutting part 305 are in an open state. The rod is made flat, so that the hollow structure inside has an opening and closing space for the four-edge scissor structure. In the example, the diameter or width of the rod is 2-8 cm, and the diagonal width of the four-edge scissor structure is less than the width or diameter of the hollow structure inside the rod. Of course, the rod does not have to be made so wide. A slot can be provided on the side of the rod to provide space for the opening and closing of the four-edge scissor structure. The slot can be preferably arranged smoothly. The side of the four-edge scissor structure slides with the slot during opening and closing, which can reduce the shaking or deviation of the scissor structure during opening and closing.

[0032] One end of the pull rope 50 is connected to the trigger 60, and the connection can be achieved by fixing the end of the pull rope 50 to the trigger 60 through a fixing ring; the other end of the pull rope 50 is connected to the hinge of the rear connecting rod 307 of the quadrilateral scissor structure. When the user pushes the trigger 60, the trigger 60 slides along the sliding groove 701 or sliding rail, thereby pulling the pull rope 50, which deforms the quadrilateral scissor structure, and then closes the two blades of the shearing part 305, thereby performing the shearing action. When the user releases the trigger 60, the quadrilateral scissor structure is reset under the elastic action of the spring 306, thereby reopening the two blades of the shearing part 305.

[0033] A protrusion 40 is arranged above the shearing part 305, and the protrusion 40 is fixed above the shearing part 305 by means of bolts, screws, or welding or one-piece forming. The protrusion is preferably a semicircular structure, which can reduce the obstruction of the extension into the shrub compared to other polygonal structures. The height of the protrusion is set according to the need. The length of the leaf blade of sweet tea is usually 5-10 cm, and the length of the petiole is generally 1.5-4 cm. Therefore, the height of the protrusion can be set to 3-10 cm to ensure that the protrusion fully clamps the leaf blade or petiole during shearing. The front end and the rear end of the protrusion are preferably set to be sharp wedges or sharp corners or round corners. In the figure, the protrusion is a semicircular structure, the front end is relatively sharp, and the outer side is smooth, which can reduce the obstruction of the extension into and out of the shrub. An inner clamping surface 401 is formed in the protrusion 40. When the two blades of the shearing part 305 are closed for shearing, the clamping surface 401 of the protrusion 40 can clamp the sweet tea 80 synchronously to prevent the broken sweet tea 80 from hanging in the sweet tea shrub, thereby facilitating the removal.

[0034] In another embodiment, as shown in FIG. 4, the clamping surfaces 401 of the two protrusions 40 have a gap therebetween when the shearing part 305 is shearing, which prevents excessive clamping of the sweet tea 80. The gap is usually controlled to be between 1-5 mm. The stems and leaves of the sweet tea 80 are relatively fragile, and if the clamping force is too large, the stems are likely to be damaged, thereby affecting the quality and subsequent preservation of the sweet tea 80. In the figure, the gap between the clamping surfaces 401 of the two protrusions 40 is D, which can be maintained by setting a stopper 405 to prevent the clamping surfaces 401 from being excessively attached.

[0035] In another embodiment, as shown in FIG. 3, a rubber layer 402 is arranged inside the protruding block 40, and a gap of 1-2 mm is still reserved after the arrangement of the rubber layer 402. The rubber layer 402 is made of natural rubber material with good elasticity and flexibility, and has a thickness of about 1-3 mm. The shape of the rubber layer 402 is consistent with the contour of the inner side of the protruding block 40, and can tightly wrap the leaves or stems of the sweet tea leaves 80. The presence of the rubber layer 402 can not only increase the friction between the sweet tea leaves 80 and the rubber layer 402, effectively preventing the sweet tea leaves 80 from falling during clamping, but also can avoid damage to the sweet tea leaves 80 during clamping due to the softness of the rubber layer 402, thereby ensuring the integrity of the sweet tea leaves 80.

[0036] In another embodiment, as shown in FIG. 3, the protruding block 40 is a metal block or a plastic block. The metal block is integrally formed with the shearing part 305 or is fixed on the shearing part 305 by screws or welding. The plastic block is fixed on the shearing part 305 by adhesion or screws.

[0037] For the protruding block 40, if a metal material is selected, aluminum alloy or stainless steel can be used. The protruding block 40 made of aluminum alloy has the characteristics of light weight and high strength, which can not only ensure the structural stability of the protruding block 40 during picking, but also reduce the weight of the entire device, making it convenient for users to operate for a long time. When the metal protruding block 40 is integrally formed with the shearing part 305, it is formed by one-time processing during production and manufacturing. This method ensures the connection strength and integrity between the two, reduces the possibility of loosening or breaking at the connection site, and the like. When fixed by screws, high-strength rust-proof screws are used. Corresponding mounting holes are pre-drilled on the protruding block 40 and the shearing part 305. After the screws are inserted through the mounting holes, they are tightened with nuts to ensure that the protruding block 40 is firmly fixed on the shearing part 305. Alternatively, the protruding block 40 can be directly welded on the shearing part 305.

[0038] If a plastic material is selected, polycarbonate (PC) or acrylonitrile-butadiene-styrene copolymer (ABS) is usually used. Polycarbonate has good impact resistance and dimensional stability, which can reduce production costs while ensuring the performance of the protruding block 40. ABS plastic has the advantages of easy processing and good surface finish. When the plastic protruding block 40 is fixed by adhesion, high-strength industrial glue is used. Before adhesion, the adhesion surfaces of the protruding block 40 and the shearing part 305 are cleaned and polished to increase the adhesion of the glue and ensure firm adhesion. The screw fixing method is similar to that of the metal protruding block 40, and the tightness of the screws is also ensured.

[0039] Further preferably, the convex block 40 is made of transparent plastic, which does not block the line of sight and facilitates accurate alignment of the cutting position of the sweet tea leaves 80. When the convex block 40 is made of transparent plastic, its transparency provides great convenience for the picker. Common transparent plastic materials used to make the convex block 40 include polymethyl methacrylate (PMMA, commonly known as organic glass) and polycarbonate (PC). Polymethyl methacrylate has excellent optical properties, with a light transmittance of up to 92% or more, high surface finish, hard texture and resistance to scratching, which can ensure clear vision while maintaining good structural strength. When aiming at the target, the picker can clearly see the stem of the sweet tea leaves 80 and the specific position that needs to be cut through through the transparent convex block 40, and accurately adjust the angle and direction of the rod body 20 to make the cutting part 305 accurately align with the target.

[0040] In another embodiment, as shown in FIG. 6, the inner clamping surface 401 of the convex block 40 is provided with a concave-convex point structure 403, or as shown in FIG. 7, the clamping surface 401 is provided with a wavy structure 404. When the rubber layer 402 is provided, the concave-convex point structure or the wavy structure can be provided on the rubber layer.

[0041] If the inner clamping surface 401 of the convex block 40 is provided with the concave-convex point structure 403, the concave-convex points 403 are distributed on the clamping surface 401, with a height of about 1-2 mm and a diameter of about 1.5-2.5 mm. The presence of the concave-convex points 403 greatly increases the friction between the clamping surface 401 and the sweet tea leaves 80, making the sweet tea leaves 80 more stable during clamping. Even if slight shaking or shaking occurs during operation, the sweet tea leaves 80 are not easy to fall off. Moreover, the shape design of the concave-convex points 403 can better contact the surface of the sweet tea leaves 80, further enhancing the clamping effect.

[0042] If the inner clamping surface 401 of the convex block 40 is provided with the wavy structure 404, the height of the wave crest is about 1.5-3 mm and the wavelength is about 5-8 mm. The wavy structure 404 can be adjusted to some extent according to the thickness and shape of the sweet tea leaves 80. When clamping sweet tea leaves 80 or stem and leaf parts of different thicknesses, the wavy structure 404 can tightly clamp the sweet tea leaves 80, increase the contact area between the clamping surface 401 and the sweet tea leaves 80, and improve the friction, ensuring that the sweet tea leaves 80 can be stably fixed on the device after being cut off.

[0043] One implementation process of the present embodiment is as follows:

[0044] As shown in Figure 5, hold the handle 10 with one hand, place your fingers naturally on the trigger 60, make sure your index finger or middle finger can easily push the trigger 60. Adjust the force and posture of holding according to personal habits and comfort, so that the whole device remains stable in your hand.

[0045] Extend the rod body 20 forward, so that the scissor assembly 30 is aligned with the part of sweet tea leaves 80 that needs to be picked. Since the length of the rod body 20 can be designed according to actual use requirements, generally 20-80 centimeters, it can be operated at a certain distance from the sweet tea leaves 80, avoiding direct contact with the thorny branches and leaves of the sweet tea leaves 80, and there is no need to stretch your hand into the shrub. By adjusting the angle and direction of the rod body 20, the cutting part 305 can be accurately aligned with the stem or petiole or part of the sweet tea leaves 80 that needs to be cut.

[0046] When aiming at the target, slowly push the trigger 60. The trigger 60 slides along the slide rail, driving the cable 50, which pulls the four-bar linkage to deform, so that the two blades of the cutting part 305 gradually close. During the closing of the blades, the clamping surface 401 inside the protrusion 40 will simultaneously clamp the sweet tea leaves 80, preventing the sweet tea leaves 80 from falling or hanging in the shrub after being cut. When pushing the trigger 60, pay attention to the control of the force to avoid damaging the blades or over-pulling the sweet tea leaves 80. When you hear a crisp "click" sound, it means that the sweet tea leaves 80 have been cut.

[0047] After the sweet tea leaves 80 are cut, at this time, keep the trigger 60 in the pushed state, and due to the clamping action of the protrusion 40, the cut sweet tea leaves 80 are still fixed on the device. Retract the rod body 20 into the collection container, then release the trigger 60, and under the elastic action of the spring 306, the four-bar linkage resets, driving the two blades of the cutting part 305 to reopen, and the protrusion 40 also opens, and the sweet tea leaves 80 directly fall into the collection container. The whole process does not require direct contact with the sweet tea leaves 80, which not only avoids injury, but also greatly improves the picking efficiency.

[0048] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized.

Claims

1. A sweet tea leaf picking device, characterized by, The utility model relates to a cutting device for sweet tea leaves, comprising: a handle; a rod body connected with the handle and extending forward, a lower part of the rod body being provided with a slidable trigger close to the handle, so that the trigger is pushed by fingers when the handle is held by hands; a scissor assembly provided at a front end of the rod body, the scissor assembly comprising a cutting part, a quadrilateral scissor structure for driving the cutting part to open and close, and a spring for supporting the scissor structure to be elastically reset; a pull cable connecting the trigger and the scissor structure, when the trigger is pushed, the pull cable pulls the scissor structure to make the cutting part open and close to perform a cutting action; a protrusion is provided above the cutting part, an inner side of the protrusion is formed with a clamping surface, and the sweet tea leaves are clamped synchronously when the cutting part is cut.

2. The sweet tea leaf picking device according to claim 1, wherein A stopper is provided between the clamping surfaces of the two protrusions, so that the clamping surfaces of the two protrusions have a spacing when the cutting part is cut, preventing the sweet tea leaves from being clamped excessively; the spacing between the clamping surfaces is 1-5 mm.

3. The sweet tea leaf picking device according to claim 2, wherein The protrusion is a semicircular structure, and the height of the protrusion is 3-10 cm.

4. The sweet tea leaf picking device according to claim 1 or 3, wherein An inner side of the protrusion is provided with a rubber layer.

5. The sweet tea leaf picking device as claimed in claim 4, wherein, The thickness of the rubber layer is 1-3 mm, and the shape is consistent with the contour of the inner side of the protrusion.

6. The sweet tea leaf picking device according to claim 1 or 3, wherein The protrusion is a metal block, which is integrally formed with the cutting part or fixed on the cutting part by screws; or the protrusion is a plastic block, which is fixed on the cutting part by sticking or screws.

7. The sweet tea leaf picking device as claimed in claim 6, wherein, The protrusion is a transparent plastic block.

8. The sweet tea leaf picking device according to claim 1 or 3, wherein The inner clamping surface of the protrusion is provided with a concave-convex point structure or a wave-shaped structure.

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