Picking tool

Abstract

The utility model relates to the technical field of jasmine flower harvesting, in particular to a picking tool which comprises a collecting box and a suction pipe, a suction pump is arranged in the collecting box, one end of the suction pipe is communicated with the collecting box, and the picking tool further comprises a picking device. The picking device comprises a suction tube, a closing-in piece arranged at one end of the suction tube and a closing-in mechanism movably arranged on the suction tube in a sleeving mode, the other end of the suction tube is communicated with the other end of the suction tube, the outward end of the closing-in piece is opened outwards in a horn shape, and the closing-in piece can deform and reset. The closing-up mechanism can control the closing-up amount of the outward end of the closing-up piece. The picking tool is simple in structure, the suction force of the suction end can be changed, and power waste of suction equipment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of jasmine flower harvesting technology, specifically to a harvesting tool. Background Technology

[0002] Jasmine originated in the Arab regions such as India and is now widely cultivated in subtropical regions, mainly distributed in countries along the Mediterranean coast. It is also found in southern China, especially in Hengzhou, Guangxi, which is the largest jasmine production base in my country.

[0003] Currently, jasmine flowers bloom individually and are relatively small. Therefore, they are typically harvested manually. While simple, this method is labor-intensive and inefficient, primarily suitable for small-scale farming. To address this, there are two main methods for large-scale jasmine harvesting. One method uses a harvesting tool with a comb-like structure, such as the jasmine flower harvester described in patent CN201921488657.1. This method significantly improves efficiency compared to traditional manual harvesting. However, the comb-like structure can easily pick jasmine buds along with the flowers, requiring subsequent sorting of the harvested jasmine blossoms. Another method uses negative pressure suction. This works because the connection strength between open jasmine flowers and buds and the branches varies. Open jasmine flowers are more likely to fall than buds, so negative pressure suction makes it easier to break the connection. For example, the technical solution disclosed in patent CN201721194693.8 - Jasmine Flower Harvester. While this harvesting method is simple and convenient, the opening degree of the suction head structure in this patent is fixed, resulting in a fixed suction force that cannot be adjusted. Since different jasmine plants have different blooming stages, and the connection strength between jasmine flowers and branches also varies, using a uniform high-power suction device, while adaptable to harvesting jasmine flowers at all blooming stages, would result in wasted power. Therefore, to adjust the suction force of the suction head, one must adjust the power of the suction device or change the size of the air inlet end of the suction head. Adjusting the power of the suction device makes the entire control system relatively complex, requiring the frequency converter and motor to be compatible, resulting in relatively high overall manufacturing costs. On the other hand, changing the size of the air inlet of the suction head is relatively simple and has lower manufacturing costs. However, there are currently no suction heads on the market that can change the size of the air inlet. Therefore, a structure that can change the size of the air inlet of the suction head is needed to solve the above problems. Utility Model Content

[0004] In order to overcome one of the shortcomings of the existing technology, the purpose of this utility model is to provide a harvesting tool. This harvesting tool has a simple structure and can change the suction force at the suction end, thus avoiding power waste of the suction equipment.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A harvesting tool includes a collection box and a straw. The collection box is equipped with a suction pump. One end of the straw is connected to the collection box. The tool also includes a harvesting device, which includes a suction cylinder, a closing member disposed on one end of the suction cylinder, and a closing mechanism movably mounted on the suction cylinder. The other end of the suction cylinder is connected to the other end of the straw. The closing member opens outward in a trumpet shape at one end and is deformable and repositionable. The closing mechanism controls the amount by which the closing member closes outward.

[0007] Furthermore, the closing mechanism includes a closing cylinder, a drive rod, and a closing handle. The closing cylinder is movably mounted on the suction cylinder, and the inner diameter of the closing cylinder is smaller than the diameter of the smallest virtual circle formed by the outer edge of the closing component. The middle part of the closing handle is hinged to the outer wall of the suction cylinder. One end of the drive rod is hinged to the closing cylinder, and the other end is hinged to the end corresponding to the closing handle. The closing handle can drive the closing cylinder to slide along the axial direction of the suction cylinder through the drive rod to close or release the outward end of the closing component.

[0008] Furthermore, the end of the gathering tube near the closing part is provided with a pressing part, and the inner ring port of the pressing part near the closing part is provided with a rounded chamfer.

[0009] Furthermore, the inner diameter of the pressing part is greater than or equal to the outer diameter of the smallest end of the closing part.

[0010] Furthermore, the suction cylinder is provided with a mounting ear, and the middle part of the retractable handle is hinged to the mounting ear.

[0011] Furthermore, the closing component includes a mounting cylinder, one end of which is inserted into the outward end of the suction cylinder. The other end of the mounting cylinder is provided with a plurality of elastic tongues inclined outward along the circumferential direction. All the elastic tongues can deform and return to their original position. All the elastic tongues together form a trumpet-shaped cylinder. The roots of all the elastic tongues are stacked sequentially along the circumferential direction of the mounting cylinder. The closing mechanism at one end can press against the outer wall of all the elastic tongues.

[0012] Furthermore, the outward ends of all the elastic tongues are retracted inwards.

[0013] Furthermore, a retaining ring is provided on the outer wall of the mounting cylinder, and a retaining groove for engaging the retaining ring is provided on the inner wall of the outward end of the suction cylinder.

[0014] Furthermore, the collection box is provided with a collection area and a suction area, the suction pump is installed in the suction area, a filter screen is provided between the collection area and the suction area, and one end of the suction tube is connected to the upper part of the collection area.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention provides a harvesting tool that improves upon existing suction harvesting equipment by designing a suction cylinder structure that is easier for workers to hold. The suction cylinder features a retractable opening mechanism, allowing workers to adjust the suction force at the inlet by controlling the opening size of the retractable mechanism to suit different harvesting needs. Furthermore, the retractable mechanism is deformable and can automatically return to its initial state, accommodating most jasmine flower harvesting requirements.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the harvesting device in an embodiment of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the harvesting device in an embodiment of the present invention. Figure 2 ;

[0021] Figure 4 This is a cross-sectional view of the harvesting device in an embodiment of this utility model;

[0022] Figure 5 This is a cross-sectional view of the collection box in an embodiment of this utility model.

[0023] Explanation of icon numbers:

[0024] Collection box 10, suction pump 11, collection area 12, suction area 13, filter screen 14, discharge port 15, screw cap 16, suction tube 20, picking device 30, suction cylinder 31, closing part 32, gathering cylinder 33, drive rod 34, gathering handle 35, pressing part 36, mounting ear 37, mounting cylinder part 38, elastic tongue 39, retaining ring 3a, retaining groove 3b. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] Reference Figures 1 to 5 The picking tool shown includes a collection box 10 and a straw 20. The collection box 10 is equipped with a suction pump 11. One end of the straw 20 is connected to the collection box 10. The tool also includes a picking device 30, which includes a suction cylinder 31, a closing member 32 disposed on one end of the suction cylinder 31, and a closing mechanism movably fitted on the suction cylinder 31. The other end of the suction cylinder 31 is connected to the other end of the straw 20. The closing member 32 is flared outward in a trumpet shape and can deform and return to its original position. The closing mechanism can control the amount of closing of the closing member 32 at the outward end.

[0027] See Figure 5 The suction pump 11 is directly mounted on the mounting structure on the side wall of the collection box 10, such as a mounting edge or mounting cylinder. The collection box 10 can be a backpack-type or vehicle-type design, depending on the actual usage requirements. In this application, a backpack-type design is preferred. Furthermore, the collection box 10 is provided with a collection area 12 and a suction area 13. The suction pump 11 is installed in the suction area 13. A filter screen 14 is provided between the collection area 12 and the suction area 13. One end of the suction pipe 20 is connected to the upper part of the collection area 12.

[0028] In one embodiment of this application, to facilitate the discharge of harvested jasmine flowers from the collection box 10, a discharge port 15 is provided at the bottom of the collection box 10, and a screw cap 16 is screwed onto the discharge port 15. The discharge port 15 is actually located at the bottom of the collection area 12. The straw 20 is a flexible tube in this application, which facilitates bending or adjusting the suction direction, improving ease of use. It should be noted that in this application, the straw 20 and the harvesting device 30 employ a quick-release design, such as a hydraulic hose connector, a snap-fit ​​method with a clamp and slot, or a threaded screw-on method.

[0029] Furthermore, in this application, the constriction element 32 is made of rubber or plastic sheeting, or it can be made of steel sheet or composite material forming a conical structure. In fact, the structural design of the constriction element 32 is mainly to facilitate changing the air inlet diameter at the inlet end of the suction cylinder 31, thereby controlling the airflow velocity at the air inlet end and ultimately changing the suction force.

[0030] This harvesting tool improves upon existing suction harvesting equipment by modifying the harvesting device 30 and designing the suction cylinder 31 to facilitate gripping by workers. A variable-diameter constriction element 32 is incorporated into the suction cylinder 31. This design allows workers to adjust the opening size of the constriction element 32 according to actual needs, thereby adjusting the suction force at the inlet of the suction cylinder 31 to suit different harvesting requirements. Furthermore, the constriction element 32 is deformable and can automatically return to its initial state to accommodate most jasmine flower harvesting needs.

[0031] See Figures 1 to 3 In one embodiment of this application, to better control the degree of closing of the outer end of the closing member 32, the closing mechanism includes a closing cylinder 33, a drive rod 34, and a closing handle 35. The closing cylinder 33 is movably mounted on the suction cylinder 31, and the inner diameter of the closing cylinder 33 is smaller than the diameter of the smallest virtual circle formed by the outer edge of the closing member 32. The middle part of the closing handle 35 is hinged to the outer wall of the suction cylinder 31. One end of the drive rod 34 is hinged to the closing cylinder 33, and the other end is hinged to the corresponding end of the closing handle 35. The closing handle 35 can drive the closing cylinder 33 to slide along the axial direction of the suction cylinder 31 through the drive rod 34 to close or open the outer end of the closing member 32. The closing cylinder 33 has a ring-shaped structure, the main purpose of which is to better push against the outer wall of the outer end of the closing member 32, thus facilitating control over the degree of closing of the entire closing member 32. The retractable handle 35 is a lever structure, which reduces the driving force required when driving the retractable cylinder 33 to slide. Furthermore, in some embodiments, a pair of retractable handles 35 can be provided, respectively hinged to the opposite side walls of the suction cylinder 31. Similarly, two drive rods 34 can be provided, thus accommodating two retractable handles 35. This structural design ensures that when the retractable cylinder 33 slides along the axis of the suction cylinder 31, there will be no relative movement jamming between the retractable cylinder 33 and the suction cylinder 31. In addition, in some embodiments, to improve the smoothness of movement between the retractable cylinder 33 and the suction cylinder 31, a linear bearing can be provided between them to reduce friction.

[0032] In the above embodiments, in order to better close the trumpet-shaped closing member 32, in one embodiment of this application, the closing cylinder 33 is provided with a pressing part 36 at one end near the closing member 32, and the inner ring port of the pressing part 36 near the closing member 32 is provided with a smooth chamfer. When the closing cylinder 33 gradually presses against the outer wall of the closing member 32, the pressing part 36 can force the outward end of the closing member 32 to deform and gradually close, thereby controlling the air intake area at the outward end of the closing member 32, changing the air intake speed, and improving the suction force.

[0033] In the above-described improved embodiment, the inner diameter of the pressing part 36 is greater than or equal to the outer diameter of the smallest end of the closing member 32. This design ensures normal contact between the closing cylinder 33 and the smallest end of the closing member 32, and guarantees the closing ability. It should be noted that, in this application, since the closing member 32 can deform and return to its original position, after the user releases the closing handle 35, the closing member 32 can push the closing cylinder 33, the drive rod 34, and the closing handle 35 to return to their original position. Of course, in some embodiments, a return spring can be provided between the closing handle 35 and the outer wall of the suction cylinder 31, which can increase the return efficiency of the entire closing mechanism and ensure the return quality.

[0034] In the above embodiments, to facilitate the installation of the retractable handle 35, the suction cylinder 31 is provided with a mounting ear 37, and the middle part of the retractable handle 35 is hinged to the mounting ear 37. In fact, the end of the retractable handle 35 that is held by the user is relatively longer than the other end, so as to achieve a labor-saving effect.

[0035] See Figures 1 to 4 In one embodiment of this application, to achieve closure, the closing component 32 includes a mounting cylinder 38. One end of the mounting cylinder 38 is inserted into the outward end of the suction cylinder 31. A plurality of elastic tongues 39 are arranged circumferentially outwards on the other end of the mounting cylinder 38. All the elastic tongues 39 can deform and return to their original shape, forming a trumpet-shaped tube. The roots of all the elastic tongues 39 are stacked sequentially along the circumferential direction of the mounting cylinder 38. The closing mechanism's corresponding end can press against the outer wall of all the elastic tongues 39. In this embodiment, the structure of multiple elastic tongues 39 forming a tube makes closure easier. Simultaneously, the single-piece design can largely adapt to the harvesting of jasmine flowers, allowing the adapter to avoid jasmine branches and ensuring that most of the closing component 32 can remain in a tube shape, thus maintaining the suction effect. In this application, the elastic tongues 39 are made of rubber and contain steel wires inside.

[0036] In the above embodiments, in order to prevent the outward end of the cylindrical structure formed by all the elastic tongues 39 from being too large, in one embodiment of this application, the outward end of all the elastic tongues 39 is folded inward.

[0037] See Figure 4 In the improved embodiment above, in order to facilitate installation, a retaining ring 3a is provided on the outer wall of the mounting cylinder 38, and a retaining groove 3b is provided on the inner wall of the outer end of the suction cylinder 31 to cooperate with the retaining ring 3a.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A harvesting tool, comprising a collection box and a straw, wherein a suction pump is provided inside the collection box, and one end of the straw is connected to the collection box, characterized in that, It also includes a picking device, which includes a suction cylinder, a closing component disposed on one end of the suction cylinder, and a closing mechanism movably mounted on the suction cylinder. The other end of the suction cylinder is connected to the other end of the straw. The closing component opens outward in a trumpet shape at one end. The closing component can deform and return to its original position. The closing mechanism can control the amount of closing of the closing component at one end.

2. A harvesting tool according to claim 1, characterized in that: The closing mechanism includes a closing cylinder, a drive rod, and a closing handle. The closing cylinder is movably mounted on the suction cylinder, and the inner diameter of the closing cylinder is smaller than the diameter of the smallest virtual circle formed by the outer edge of the closing component. The middle part of the closing handle is hinged to the outer wall of the suction cylinder. One end of the drive rod is hinged to the closing cylinder, and the other end is hinged to the end of the closing handle corresponding to it. The closing handle can drive the closing cylinder to slide along the axial direction of the suction cylinder through the drive rod to close or open the outward end of the closing component.

3. A harvesting tool according to claim 2, characterized in that: The gathering tube has a pressing part at one end near the closing part, and the inner ring port of the pressing part near the closing part has a rounded chamfer.

4. A harvesting tool according to claim 3, characterized in that: The inner diameter of the pressing part is greater than or equal to the outer diameter of the smallest end of the closing part.

5. A harvesting tool according to claim 2, characterized in that: The suction cylinder is provided with a mounting ear, and the middle part of the retractable handle is hinged to the mounting ear.

6. A harvesting tool according to any one of claims 1-5, characterized in that: The closing component includes a mounting cylinder, one end of which is inserted into the outward end of the suction cylinder. The other end of the mounting cylinder is provided with a plurality of elastic tongues inclined outward along the circumferential direction. All the elastic tongues can deform and return to their original position. All the elastic tongues together form a trumpet-shaped cylinder. The roots of all the elastic tongues are stacked sequentially along the circumferential direction of the mounting cylinder. The closing mechanism at one end can press against the outer wall of all the elastic tongues.

7. A harvesting tool according to claim 6, characterized in that: All of the aforementioned elastic tongues have their outward ends retracted inwards.

8. A harvesting tool according to claim 6, characterized in that: A retaining ring is provided on the outer wall of the mounting cylinder, and a retaining groove is provided on the inner wall of the outward end of the suction cylinder to engage with the retaining ring.

9. A harvesting tool according to claim 1, characterized in that: The collection box is provided with a collection area and a suction area. The suction pump is installed in the suction area. A filter screen is provided between the collection area and the suction area. One end of the suction tube is connected to the upper part of the collection area.

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