A non-destructive ginkgo leaf harvesting device

Abstract

This invention relates to the field of ginkgo leaf harvesting equipment technology and discloses a non-destructive ginkgo leaf harvesting device, including a connecting frame. The connecting frame has a collection tube inside for collecting harvested ginkgo leaves, and a picking section. The picking section includes an arc-shaped plate located on one side of the collection tube. Two arc-shaped plates are symmetrically distributed along the central axis of the collection tube. A first annular block and a second annular block are fixedly connected to both sides of the inner wall of the arc-shaped plate, respectively. The first and second annular blocks are equipped with picking parts for harvesting ginkgo leaves. Locking parts are provided at the joint surfaces of the two first annular blocks and the two second annular blocks. This non-destructive ginkgo leaf harvesting device effectively solves the problem in the prior art where the different maturity levels of ginkgo leaves on branches lead to the damage of a large number of immature ginkgo leaves during harvesting, affecting the normal growth of the ginkgo tree and hindering secondary harvesting.

Description

Technical Field

[0001] This invention relates to the field of ginkgo leaf harvesting equipment technology, specifically to a non-destructive ginkgo leaf harvesting device. Background Technology

[0002] Ginkgo leaves are the dried leaves of the ginkgo tree, a plant in the Ginkgoaceae family. They are harvested in autumn when the leaves are mature and dried promptly. Ginkgo leaves have good medicinal value and are effective in treating many diseases. In recent years, the planting area of ​​ginkgo leaves for leaf production in my country has been expanding year by year. Studies have found that the content of effective components in ginkgo leaves has an age effect, that is, as the age of the ginkgo tree increases, the content of effective components in the leaves will decrease. Currently, most ginkgo leaf-harvesting gardens cultivate 1-6 year old seedlings for leaf harvesting, while the mature ginkgo seedlings are used for landscaping or greening seedling production.

[0003] In existing technologies, ginkgo leaf harvesting is generally divided into manual harvesting and mechanical harvesting. Due to the low efficiency and high safety risks of manual harvesting, mechanized harvesting has gradually replaced manual labor. Mechanized harvesting mainly involves placing the ginkgo leaves on the branches inside the machine casing, and then using the internal blades to cut or sever the leaves by the petiole. However, because the ginkgo leaves on the branches are of different maturity levels and unevenly distributed, a large number of immature ginkgo leaves are damaged during the harvesting process, and the bark may even be damaged, affecting the normal growth of the ginkgo tree and the possibility of secondary harvesting. Summary of the Invention

[0004] Technical problems to be solved

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a non-destructive ginkgo leaf harvesting device, which can effectively solve the problem that, due to the different maturity levels of ginkgo leaves on the branches of ginkgo trees, a large number of immature ginkgo leaves are damaged during the harvesting process, and even damage to the bark is caused, affecting the normal growth of ginkgo trees and secondary harvesting.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides a non-destructive harvesting device for ginkgo leaves, comprising:

[0009] A connecting frame, the inside of which is provided with a collection tube for collecting harvested ginkgo leaves;

[0010] The removal part, the removal part includes an arc-shaped plate, the arc-shaped plate is arranged on one side of the collection pipe, there are two arc-shaped plates and they are symmetrically distributed with respect to the central axis of the collection pipe, and the two arc-shaped plates can form a conical space when closed. On both sides of the inner wall of the arc-shaped plate, a first annular block and a second annular block are respectively fixedly connected. There are two first annular blocks and two second annular blocks respectively, and the two first annular blocks and the two second annular blocks can form a closed ring respectively. The central axis of the ring coincides with the central axis of the conical space. A picking part for picking ginkgo leaves is arranged in the conical space;

[0011] Among them, a driving part for adjusting the position of the arc-shaped plate is arranged on the connecting frame;

[0012] Among them, a locking part is arranged on the joint surface of the first annular block and the second annular block.

[0013] Further, the collection pipe includes a storage pipe and a connecting pipe. The outer circumferential surface of the connecting pipe is fixedly connected inside the connecting frame. The storage pipe is threadedly connected to the side of the connecting pipe close to the connecting frame. A conical cover is fixedly connected to the inner wall of the connecting pipe close to the storage pipe. An elastic pipe is arranged on the side of the connecting pipe away from the connecting frame, and an arc-shaped plate is rotatably connected to the inner wall of the elastic pipe.

[0014] Further, the picking part includes a movable frame. There are two movable frames and they are respectively slidably connected to the surfaces of the first annular block and the second annular block. A connecting rod is fixedly connected between the adjacent surfaces of a pair of movable frames. A bracket is rotatably connected to the outer circumferential surface of the connecting rod. There are multiple brackets and they are linearly arranged with respect to the central axis of the connecting rod. A cutting frame is rotatably connected to the side of the bracket away from the connecting rod. The cutting frame is in a "Ji" shape, and a steel wire rope is fixedly connected to the middle of the cutting frame.

[0015] Further, a rod sleeve is rotatably connected to the outer circumferential surface of a cutting frame close to the movable frame, and the outer circumferential surface of the cutting frame is connected to the inner wall of the rod sleeve through a torsion spring. One end of the rod sleeve away from the cutting frame is fixedly connected to the movable frame.

[0016] Further, a gear ring is fixedly connected to the inner walls of the first annular block and the second annular block respectively. A gear meshing with the gear ring is rotatably connected inside the movable frame.

[0017] Furthermore, the locking component includes a built-in cavity, which is formed on the sidewalls of the first annular block and the second annular block. A locking pin is slidably connected to the inner wall of one of the built-in cavities near the connecting rod. One side of the locking pin is connected to the sidewall of the built-in cavity via a return spring. A movable rod is slidably connected to the inner wall of the other built-in cavity away from the connecting rod. A movable block is slidably connected to the outer circumference of the movable rod. A fixed block is fixedly connected to the end face of the movable rod. Both the movable block and the fixed block are conical. A groove is formed on the outer circumference of the movable rod near the fixed block.

[0018] Furthermore, a first magnet is provided on the inner wall of a built-in cavity near the movable rod, and a lug is fixedly connected to the outer circumference of the movable rod. The lug is used to limit the position of the movable block, and a second magnet is provided inside the lug.

[0019] Furthermore, an abutment plate is fixedly connected to the inner wall of the arc-shaped plate on the side away from the elastic tube by an elastic element.

[0020] Beneficial effects

[0021] The technical solution provided by this invention has the following advantages compared with the prior art:

[0022] This invention features an arc-shaped plate that fixes the rear of the branch. The central axis of the branch coincides with the central axis of the conical space formed by the arc-shaped plate. Furthermore, the rotation radius of the steel wire rope within the conical space remains constant. This ensures the steel wire rope can only cut ginkgo leaves within the conical space that meet the cutting radius, without removing immature leaves, allowing them to continue growing and facilitating future harvesting. Simultaneously, when the first and second annular blocks close to form complete rings, the locking pins, along with the locking groove and fixing block, ensure a more stable connection between the two gear rings. This prevents uneven force due to unstable connection between the gears and the gear rings, which would accelerate gear wear and shorten their lifespan. Additionally, the first and second magnets allow for easy release of the gear rings, facilitating the opening of the arc-shaped plate for future harvesting. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2This is a partial structural diagram of the collection tube according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the arc-shaped plate according to an embodiment of the present invention;

[0027] Figure 4 This is a partial structural diagram of the harvesting component according to an embodiment of the present invention;

[0028] Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged structural diagram at point A in the middle;

[0029] Figure 6 This is a schematic diagram of the toothed ring, the first annular block, and the locking member according to an embodiment of the present invention;

[0030] Figure 7 This is a partial structural diagram of the locking component according to an embodiment of the present invention;

[0031] Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged structural diagram at point B;

[0032] Figure 9 This is a structural schematic diagram of the arc-shaped plate in use according to an embodiment of the present invention.

[0033] The labels in the diagram represent: 1. Connecting frame; 2. Collection tube; 21. Storage tube; 22. Connecting tube; 23. Conical cover; 3. Removal section; 31. Arc plate; 32. First annular block; 33. Second annular block; 34. Harvesting component; 341. Movable frame; 342. Connecting rod; 343. Support; 344. Cutting frame; 345. Steel wire rope; 346. Rod sleeve; 347. Gear ring; 348. Gear; 35. Locking component; 351. Internal cavity; 352. Locking pin; 353. Movable rod; 354. Movable block; 355. Fixed block; 356. Slot; 357. First magnet; 358. Support ear; 359. Second magnet; 36. Abutment plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] Example:

[0037] Please refer to Figures 1-9 , the present invention provides a technical solution: a non-destructive ginkgo leaf picking device, comprising:

[0038] A connecting frame 1, inside which there is a collecting pipe 2 for collecting picked ginkgo leaves;

[0039] A removing part 3, the removing part 3 includes an arc-shaped plate 31, the arc-shaped plate 31 is arranged on one side of the collecting pipe 2, there are two arc-shaped plates 31 which are symmetrically distributed with respect to the central axis of the collecting pipe 2, and when the two arc-shaped plates 31 are closed, a conical space can be formed. On both sides of the inner wall of the arc-shaped plate 31, there are respectively fixedly connected with a first annular block 32 and a second annular block 33. There are two first annular blocks 32 and two second annular blocks 33 respectively, and the two first annular blocks 32 and the two second annular blocks 33 can respectively form a closed ring. The central axis of the ring coincides with the central axis of the conical space. Inside the conical space, there is a picking member 34 for picking ginkgo leaves;

[0040] Among them, on the connecting frame 1, there is a driving part for adjusting the position of the arc-shaped plate 31;

[0041] Among them, on the joint surface of the first annular block 32 and the second annular block 3, there is a locking member 35.

[0042] The collecting pipe 2 includes a storage pipe 21 and a connecting pipe 22. The outer circumferential surface of the connecting pipe 22 is fixedly connected inside the connecting frame 1. The storage pipe 21 is threadedly connected to the side of the connecting pipe 22 close to the connecting frame 1. On the inner wall of the connecting pipe 22 close to the storage pipe 21, there is fixedly connected a conical cover 23. On the side of the connecting pipe 22 far from the connecting frame 1, there is an elastic pipe, and the arc-shaped plate 31 is rotatably connected to the inner wall of this elastic pipe.

[0043] The picking member 34 includes a movable frame 341. There are two movable frames 341 which are respectively slidably connected to the surfaces of the first annular block 32 and the second annular block 33. Between the adjacent surfaces of a pair of movable frames 341, there is fixedly connected a connecting rod 342. On the outer circumferential surface of the connecting rod 342, there is rotatably connected a bracket 343, and there are multiple brackets 343 which are linearly arranged with respect to the central axis of the connecting rod 342. On the side of the bracket 343 far from the connecting rod 342, there is rotatably connected a cutting frame 344. The cutting frame 344 is in a "ji" shape, and in the middle of this cutting frame 344, there is fixedly connected a steel wire rope 345.

[0044] On the outer circumferential surface of a cutting frame 344 close to the movable frame 341, there is rotatably connected a rod sleeve 346, and the outer circumferential surface of this cutting frame 344 is connected to the inner wall of the rod sleeve 346 through a torsion spring. One end of the rod sleeve 346 far from the cutting frame 344 is fixedly connected to the movable frame 341.

[0045] The inner walls of the first annular block 32 and the second annular block 33 are respectively fixedly connected with gear rings 347, and the movable frame 341 is rotatably connected with gears 348 that mesh with gear rings 347.

[0046] The locking component 35 includes an internal cavity 351, which is formed on the side wall of the first annular block 32 and the second annular block 33. A locking pin 352 is slidably connected to the inner wall of one internal cavity 351 near the connecting rod 342. One side of the locking pin 352 is connected to the side wall of the internal cavity 351 through a return spring. A movable rod 353 is slidably connected to the inner wall of one internal cavity 351 away from the connecting rod 342. A movable block 354 is slidably connected to the outer circumference of the movable rod 353. A fixed block 355 is fixedly connected to the end face of the movable rod 353. Both the movable block 354 and the fixed block 355 are conical. A groove 356 is formed on the outer circumference of the movable rod 353 near the fixed block 355.

[0047] A first magnet 357 is provided on the inner wall of a built-in cavity 351 near the movable rod 353. A support lug 358 is fixedly connected to the outer circumference of the movable rod 353. The support lug 358 is used to limit the position of the movable block 354, and a second magnet 359 is provided inside the support lug 358.

[0048] An abutment plate 36 is fixedly connected to the inner wall of the arc plate 31 on the side away from the elastic tube by an elastic element.

[0049] refer to Figures 1-9 Mechanized harvesting mainly involves placing ginkgo leaves from the branches inside a machine casing, then using the internal blades to cut or sever the leaves by the petiole. However, due to the uneven maturity and distribution of ginkgo leaves on the branches, a large number of immature leaves are damaged during the harvesting process, which may even damage the bark, affecting the normal growth of the ginkgo tree and the possibility of secondary harvesting.

[0050] To overcome the aforementioned defects, this invention designs a non-destructive ginkgo leaf harvesting device.

[0051] Before picking ginkgo leaves:

[0052] In the initial state, the staff installs the storage tube 21 onto the connecting tube 22 using threads. With the support 343 on the connecting frame 1, the equipment can be connected to an external mobile device (preferably a robotic arm, which can freely adjust the usage angle of the equipment). When the equipment moves to the vicinity of the ginkgo tree branch to be picked, the drive unit (which includes an electric push rod, hydraulic rod, etc., preferably an electric push rod) will open the two arc plates 31, causing the front end of the arc plates 31 to open (since the arc plates 31 are connected to the inner wall of the elastic tube through a rotating shaft, the arc plates 31 rotate along the rotating shaft with the cooperation of the drive unit. At the same time, the elastic tube can be made of a flexible material, such as a rubber tube. When the arc plates 31 open, the elastic tube deforms, preventing the arc plates 31 from creating too large a gap with the connecting tube 22 during the opening process, which would cause the ginkgo leaves to fall out of the gap). Then, the external mobile device moves the opened arc-shaped plate 31 close to the root of the ginkgo tree branch. The drive unit can close the arc-shaped plate 31 until the conical space formed by the two arc-shaped plates 31 completely encloses the ginkgo tree branch. An abutment plate 36 is installed on the arc-shaped plate 31 using an elastic element. The elastic element can be made of flexible material, elastic plate, etc. Here, a hollow elastic plate is preferred. Furthermore, a flexible material such as sponge or rubber block is installed on the surface of the abutment plate 36. Here, sponge is preferred. This allows the elastic element to work with the sponge on the abutment plate 36 to cushion the ginkgo tree branch when the two arc-shaped plates 31 are closed, preventing damage to its bark.

[0053] Locking process:

[0054] As the arc plate 31 closes, the two first annular blocks 32 and the two second annular blocks 33 can form two complete rings with their central axes coinciding. The diameter of the ring formed by the first annular block 32 is larger than that of the ring formed by the second annular block 33. (When the ring is not closed, all the components in the locking member 35 are inside the built-in cavity 351. When the ring is closed, the components in the locking member 35 will extend out of the built-in cavity 351 to lock, so there will be no interference and the closure of the ring will not be affected.) At this time, the movable rod 353 will move under the action of the first magnet 357 (the first magnet 357 is an electromagnet. An electromagnet is provided on the side of the movable rod 353 and the inner wall of the built-in cavity 351 that are close to each other. By changing the direction of the current in the electromagnet, the repulsion or attraction between the electromagnets can be completed, so that the movable rod 353 can move in the built-in cavity 351). When the fixed block 355 on the movable rod 353 enters another internal cavity 351, because the fixed block 355 is conical, its conical surface will press against the retaining pin 352 (which has been chamfered), causing the retaining pin 352 to enter the mounting cavity. The return spring is then compressed. After the retaining pin 352 has moved along the conical surface of the fixed block 355, the return spring will reset the retaining pin 352, and the retaining pin 352 will move to the planar position of the fixed block 355 (the planar surface of the retaining pin 352 will fit against the planar surface of the fixed block 355, thus forming...). (Limited position) At the same time, the locking pin 352 will be inserted into the locking groove 356 on the movable rod 353, which can realize the limited fixation between the two first annular blocks 32 and the two second annular blocks 33, ensuring that the annular connection formed between the two first annular blocks 32 and the two second annular blocks 33 is more stable, thereby helping to improve the overall structural stability of the gear ring 347, and avoiding the gear 348 bearing uneven force when meshing with the complete gear ring 347 due to the unstable connection of the gear ring 347, which would accelerate the wear of the gear 348 and shorten its service life.

[0055] When the two gear rings 347 need to separate, the second magnet 359 (which is an electromagnet) on the support plate will push the movable block 354 to move along the movable rod 353. At this time, the plane of the movable block 354 will contact the inclined surface of the locking pin 352. As the movable block 354 continues to move, the locking pin 352 will disengage from the slot 356 and enter the mounting cavity. When the two contact surfaces of the movable block 354 and the fixed block 355 coincide, the locking pin 352 is fully inserted into the mounting cavity. At this time, the first magnet 357 will push the movable rod... 353 moves again into the inner cavity 351 (a positioning block is provided on the inner wall of the inner cavity 351 on one side of the movable rod 353, and a positioning groove is provided on the outer circumference of the movable rod 353. When the movable rod 353 moves in the inner cavity 351, the positioning block will move along the positioning groove, which is conducive to the stable movement of the movable rod 353 in the inner cavity 351), thereby separating the locking pin 352 from the fixing block 355, releasing the limit between the two first annular blocks 32 and the two second annular blocks 33, and the driving part can open the arc plate 31.

[0056] Ginkgo leaf harvesting process:

[0057] When the two arc-shaped plates 31 completely enclose the ginkgo tree branches, the gear 348 rotates (a drive unit can be installed on the movable frame 341 to control the rotation of the gear 348, preferably a stepper motor). Since the gear 348 meshes with the gear ring 347, the movable frame 341 will move at a constant speed along its central axis in the conical space formed by the arc-shaped plates 31 along the guide grooves on the first annular block 32 and the second annular block 33. (During the growth of ginkgo tree branches, the ginkgo leaves at the branch tips will grow more vigorously. The two arc-shaped plates 31 can form a conical space with a smaller space near the ginkgo tree branches and a larger space at the branch tips. The conical space formed by the arc-shaped plates 31 can conform to the growth pattern of ginkgo leaves.) The arc-shaped plate 31 fixes the base of the branch, so that the central axis of the branch can coincide with the central axis of the conical space formed by the arc-shaped plate 31. At this time, the cutting frame 344 can rotate along the central axis of the conical space during movement (the cutting frames 344 at both ends and the movable frame 341 are connected by a rod sleeve 346 and a torsion spring. When the wire rope 345 is hung on the tree branch, the torsion spring will provide a corresponding degree of buffering. After the wire rope 345 is detached from the tree branch, the torsion spring can reset the cutting frame 344 to avoid damage to the device and affect the normal harvesting of ginkgo leaves). Thus, the wire rope 345 can cut its rotation radius. The mature ginkgo leaf petioles (when the steel wire rope 345 rotates and suddenly contacts the petiole of the ginkgo leaf, its kinetic energy is quickly converted into impact force, which acts directly on the petiole. At the same time, due to the slender shape of the steel wire rope 345, it also generates shear force on the petiole. The two forces work together to squeeze, stretch and tear the petiole, thus completing the cutting of the ginkgo leaf). The harvested ginkgo leaves will fall into the conical space formed by the arc plate 31 (since the size of mature ginkgo leaves is larger than that of immature ginkgo leaves, the cutting frame 344 rotates according to a certain radius, which can harvest the ginkgo leaves that meet the requirements).

[0058] Ginkgo leaf extraction process:

[0059] When the locking member 35 releases the limiting position between the gear rings 347, the drive unit slightly opens the arc-shaped plate 31, creating a certain gap between the arc-shaped plate 31 and the branch (opening the arc-shaped plate 31 just enough to create a gap for rotation, avoiding excessive opening angle which would cause the ginkgo leaves inside the arc-shaped plate 31 to fall out, requiring secondary collection by the staff). Then, the external mobile device will rotate it at a certain angle, allowing the ginkgo leaves inside the arc-shaped plate 31 to fall into one of the arc-shaped plates 31. Then, the arc-shaped plate 31 is opened again at a certain angle, allowing the arc-shaped plate 31 to... Once the leaves are completely detached from the branches, the curved plate 31 is closed again and placed vertically. At this time, the ginkgo leaves inside the curved plate 31 will enter the storage tube 21 along the connecting tube 22. Furthermore, a conical cover 23 is provided at the connection between the storage tube 21 and the connecting tube 22 to prevent a large number of ginkgo leaves inside the storage tube 21 from entering the conical space formed by the curved plate 31 and affecting the next use. After disassembling the storage tube 21 from the connecting tube 22 (the storage tube 21 and the connecting tube 22 are connected by threads, and the staff can unscrew the storage tube 21 from the connecting tube 22), the ginkgo leaves inside the storage tube 21 can be collected.

[0060] In summary, the present invention, employing the locking member 35 and the picking member 34, has the following advantages:

[0061] Firstly, the ginkgo leaves are more abundant and mature at the tips of the branches, while they are sparser and less mature at the back of the branches. The two arc-shaped plates 31 can form a closed conical space that conforms to the distribution pattern of ginkgo leaves on the branches. The conical space formed by the arc-shaped plates 31 can completely enclose the leaves, making them easy to harvest.

[0062] Secondly, the curved plate 31 fixes the rear of the branch, which can make the central axis of the branch coincide with the central axis of the conical space formed by the curved plate 31. Since the rotation radius of the steel wire rope 345 in the conical space remains constant, the steel wire rope 345 can only cut the ginkgo leaves that meet the cutting radius in the conical space, and will not cut off the immature ginkgo leaves, so that they can continue to grow and facilitate the next harvest.

[0063] Thirdly, when the first annular block 32 and the second annular block 33 close to form a complete ring, the locking pin 352 in the locking member 35, together with the slot 356 and the fixing block 355, can make the connection of the mating surfaces of the two gear rings 347 more stable. This avoids the gear 348 from being subjected to uneven force due to unstable mating surface connection when meshing with the gear ring 347, which would accelerate the wear of the gear 348 and shorten its service life. In addition, unstable mating surface connection of the gear ring 347 will also affect the smoothness of movement of the picking member 34, thereby affecting the picking quality. With the help of the first magnet 357 and the second magnet 359, the limiting between the gear rings 347 can be easily released, making it convenient for the arc plate 31 to open for the next picking.

[0064] Fourthly, after harvesting, the gap between the arc-shaped plates 31 can be slightly opened, and then the equipment can be rotated at a certain angle so that the harvested ginkgo leaves can fall into one of the arc-shaped plates 31, avoiding the direct opening of the two arc-shaped plates 31 and causing the ginkgo leaves inside the arc-shaped plates 31 to fall out. In addition, a conical cover 23 is provided between the storage tube 21 and the connecting tube 22, which can allow the ginkgo leaves to enter the storage tube 21 from one side. When the equipment is placed vertically or tilted, the ginkgo leaves in the storage tube 21 will not enter the conical space enclosed by the arc-shaped plates 31 in large quantities, affecting the normal harvesting of the picking section 3.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for non-destructive harvesting of ginkgo leaves, characterized in that, Including: A connecting frame (1) with a collecting pipe (2) inside for collecting ginkgo leaves after picking. A picking part (3), the picking part (3) includes an arc-shaped plate (31), the arc-shaped plate (31) is arranged on one side of the collecting pipe (2), there are two arc-shaped plates (31) which are symmetrically distributed with respect to the central axis of the collecting pipe (2), and when the two arc-shaped plates (31) are closed, a conical space can be formed. On both sides of the inner wall of the arc-shaped plate (31), a first annular block (32) and a second annular block (33) are respectively fixedly connected. There are two first annular blocks (32) and two second annular blocks (33) respectively, and the two first annular blocks (32) and the two second annular blocks (33) can respectively form a closed ring. The central axis of the ring coincides with the central axis of the conical space, and a picking member (34) for picking ginkgo leaves is arranged in the conical space. The picking member (34) includes a movable frame (341), there are two movable frames (341) which are respectively slidably connected to the surfaces of the first annular block (32) and the second annular block (33). A connecting rod (342) is fixedly connected between the adjacent surfaces of a pair of the movable frames (341). A bracket (343) is rotatably connected to the outer circumferential surface of the connecting rod (342). There are multiple brackets (343) which are linearly arranged with respect to the central axis of the connecting rod (342). A cutting frame (344) is rotatably connected to the side of the bracket (343) away from the connecting rod (342). The cutting frame (344) is in a "ji" shape, and a steel wire rope (345) is fixedly connected to the middle of the cutting frame (344). Among them, a driving part for adjusting the position of the arc-shaped plate (31) is arranged on the connecting frame (1). Among them, a locking member (35) is arranged on the joint surface of the first annular block (32) and the second annular block (33). The locking member (35) includes an internal cavity (351), the internal cavity (351) is opened on the side walls of the first annular block (32) and the second annular block ( 2. The non-destructive harvesting device for ginkgo leaves according to claim 1, characterized in that: The collection tube (2) includes a storage tube (21) and a connecting tube (22). The outer circumference of the connecting tube (22) is fixedly connected to the inside of the connecting frame (1). The storage tube (21) is threadedly connected to the side of the connecting tube (22) near the connecting frame (1). A conical cover (23) is fixedly connected to the inner wall of the connecting tube (22) near the storage tube (21). An elastic tube is provided on the side of the connecting tube (22) away from the connecting frame (1), and an arc plate (31) is rotatably connected to the inner wall of the elastic tube.

3. The non-destructive harvesting device for ginkgo leaves according to claim 1, characterized in that: A cutting frame (344) near the side of the movable frame (341) has a rod sleeve (346) rotatably connected to its outer circumference. The outer circumference of the cutting frame (344) is connected to the inner wall of the rod sleeve (346) by a torsion spring. The end of the rod sleeve (346) away from the cutting frame (344) is fixedly connected to the movable frame (341).

4. The non-destructive harvesting device for ginkgo leaves according to claim 1, characterized in that: The inner walls of the first annular block (32) and the second annular block (33) are respectively fixedly connected with a gear ring (347), and the movable frame (341) is rotatably connected with a gear (348) that meshes with the gear ring (347).

5. The non-destructive harvesting device for ginkgo leaves according to claim 1, characterized in that: A first magnet (357) is provided on the inner wall of a built-in cavity (351) near the movable rod (353). A lug (358) is fixedly connected to the outer circumference of the movable rod (353). The lug (358) is used to limit the position of the movable block (354), and a second magnet (359) is provided in the lug (358).

6. The non-destructive harvesting device for ginkgo leaves according to claim 1, characterized in that: The inner wall of the arc-shaped plate (31) away from the elastic tube is fixedly connected to an abutment plate (36) by an elastic element.

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