Durian picking device

Abstract

The application discloses a durian picking device, which comprises a net bag, a net frame and a connecting rod, the top of the connecting rod is provided with the net frame, the net frame comprises a bottom frame, arc-shaped claws, fixed shafts, winding drums, linkage rods and first springs, the fixed shafts are connected in series to form a closed annular ring, the bottom frame is arranged at the bottom of the annular ring, the bottom frame is provided with a plurality of arc-shaped claws, the arc-shaped claws are arranged around the inner side of the annular ring, the arc-shaped claws are connected with the connecting rod, the winding drums are rotatably sleeved on the fixed shafts, one end of each winding drum is provided with a linkage rod, the other end of each winding drum is provided with a groove, the linkage rod of each winding drum is inserted into the groove of the adjacent winding drum, the upper end opening of the net bag is wound on the winding drum from the outside of the annular ring, and the first springs are used for driving the winding drums to rotate to roll up the net bag. The application provides the durian picking device, which is convenient for sleeving the durian and prevents the adjacent durian fruit stalks from being damaged in the process of sleeving the durian.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fruit picking, in particular to a durian picking device. BACKGROUND

[0002] Durian, also known as "durian", is a giant tropical evergreen tree in Malvales and Malvaceae. The leaf blade is long and round, the top is relatively sharp, the cyme is yellow, the fruit is football size, the pericarp is firm, the triangular thorn is dense, the flesh is composed of the flesh package of the false seed coat, the flesh color is light yellow, the viscosity is juicy, and it is a fruit with high economic value. Because the surface of the pericarp is densely covered with triangular thorns, the net bag used to catch durians will be stuck by the triangular barbs when picking, especially when multiple durian fruits are closely attached to each other, the net bag will push the adjacent durian upward and outward when it is put on the durian, and after the adjacent durian and the net bag are separated, the adjacent durian will be reset downward under the action of gravity, resulting in damage to the fruit stem of the adjacent durian. SUMMARY

[0003] In view of the above prior art, the present application provides a durian picking device which is convenient to put on durian and prevents damage to the fruit stem of adjacent durian during the process of putting on durian.

[0004] To achieve the above purpose, the technical scheme of the embodiment of the present application is as follows:

[0005] A durian picking device, comprising a net bag, a net frame and a connecting rod, the top of the connecting rod is provided with the net frame, the net frame comprises a bottom frame, an arc-shaped claw, a fixed shaft, a winding drum, a linkage rod and a first spring, a plurality of fixed shafts are connected in series to form a closed annular ring, the bottom frame is arranged at the bottom of the annular ring, the bottom frame is provided with a plurality of arc-shaped claws, the arc-shaped claws are arranged around the inner side of the annular ring, the arc-shaped claws are connected with the connecting rod, the winding drum is rotatably sleeved on the fixed shaft, one end of the winding drum is provided with a linkage rod, the other end is provided with a groove, the linkage rod of the winding drum is inserted into the groove of the adjacent other winding drum, the upper end opening of the net bag is wound on the winding drum from the outside of the annular ring, and the first spring is used to drive the winding drum to rotate and wind the net bag.

[0006] Further, a plurality of rollers are arranged on the bottom frame, the rollers are located below the winding drum, and the rollers are rotatably connected with the bottom frame.

[0007] Furthermore, the connecting rod is a square telescopic rod, and a sleeve is fitted onto the uppermost section of the telescopic rod. The sleeve can slide up and down along the telescopic rod. The inner wall of the sleeve is provided with an annular groove, and the plane of the annular groove is perpendicular to the axis of the telescopic rod. The uppermost section of the telescopic rod is provided with a helical track. The helix angle of the helical track at the upper part of the telescopic rod is greater than the helix angle at the lower part of the telescopic rod. Ball bearings are provided at the intersection of the helical track and the annular groove.

[0008] Furthermore, the telescopic rod includes a bottom rod, a middle rod, a top rod, and a second spring. The bottom rod is slidably connected to the middle rod, and the middle rod is slidably connected to the top rod. The top rod is provided with the spiral track. The second spring is provided between the bottom rod and the middle rod and between the middle rod and the top rod. The second spring is used to push the telescopic rod to extend. After the top rod is retracted to the middle rod, the spiral track is located outside the middle rod.

[0009] Furthermore, the beginning and end of the spiral track are located on the same side of the top rod, the sleeve is provided with a through hole, the through hole is slidably connected to a slider and a third spring, the slider has magnetism to attract the ball, the third spring pushes the slider to move outward, the top rod is slidably connected to a lever, the lever is provided with a clearance groove to avoid the slider.

[0010] Furthermore, the top of the clearance groove is an inclined surface, the slider includes a movable column and a push rod, the movable column is provided with the clearance groove, the push rod is connected to the movable column, and when the lever slides down, the inclined surface pushes the push rod to move inward.

[0011] Furthermore, the sleeve is provided with a T-shaped groove, which is parallel to the axial direction of the sleeve, and the lever is slidably connected to the T-shaped groove.

[0012] Furthermore, the bottom of the base rod is provided with a support plate, which is used to support it on the ground.

[0013] The beneficial effects of this invention are as follows: After harvesting, the net bag on the connecting rod is placed on the ground, and the harvested durians are removed from the net bag. After removing the durians, the first spring drives the drum to rotate, rewinding the net bag onto the drum. During durian harvesting, adjacent durians are spread to both sides by the net frame. When the net frame is pushed upwards, it does not cause adjacent durians to move upwards. The stems of adjacent durians are only subjected to horizontal left-right swinging, effectively protecting adjacent durians during harvesting and preventing damage to their stems. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a durian harvesting device according to an embodiment of this application;

[0015] Figure 2 This is a cross-sectional structural diagram of a durian harvesting device according to an embodiment of this application;

[0016] Figure 3 for Figure 2 Enlarged view of region A in the middle;

[0017] Figure 4 This is a schematic diagram of the sleeve and lever assembly in an embodiment of this application;

[0018] Explanation of icon numbers:

[0019] 1. Net bag, 2. Net frame, 3. Linking rod, 4. Bottom frame, 5. Arc claw, 6. Fixed shaft, 7. Drum, 8. Linkage rod, 9. First spring, 10. Roller, 11. Annular groove, 12. Spiral track, 13. Ball bearing, 14. Bottom rod, 15. Middle rod, 16. Top rod, 17. Second spring, 18. Through hole, 19. Sliding block, 20. Third spring, 21. Lever, 22. Movable column, 23. Push rod, 24. Clearance groove, 25. T-shaped slide, 26. Support plate, 27. Sleeve, 28. Groove. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0021] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Please refer to the attached document. Figures 1 to 4This application provides a durian harvesting device, including a net bag 1, a net frame 2, and a connecting rod 3. The net frame 2 is located at the top of the connecting rod 3. During harvesting, the net frame 2 is lifted by the connecting rod 3. The net frame 2 includes a bottom frame 4, arc-shaped claws 5, fixed shafts 6, a drum 7, a linkage rod 8, and a first spring 9. A plurality of fixed shafts 6 are connected in series to form a closed annular ring. The bottom frame 4 is located at the bottom of the annular ring and is provided with a plurality of arc-shaped claws 5. The arc-shaped claws 5 encircle the inner side of the annular ring. The claw 5 is connected to the connecting rod 3. The drum 7 is rotatably sleeved on the fixed shaft 6. One end of the drum 7 is provided with a linkage rod 8, and the other end is provided with a groove 28. The linkage rod 8 of the drum 7 is inserted into the groove 28 of the adjacent drum 7. It can be understood that, with the linkage rod 8 at one end of the drum 7 and the groove 28 at the other end, in two adjacent drums 7, the linkage rod 8 of one drum 7 is inserted into the groove 28 of the other drum 7, so that the two drums 7 rotate synchronously. When the drum 7 rotates back to its original position, it winds the net bag 1 onto the net frame 2. The upper opening of the net bag 1 is wrapped around the drum 7 from the outside of the annular ring. The first spring 9 is used to drive the drum 7 to rotate and wind up the net bag 1. In the initial state, the first spring 9 has a certain deformation elastic force, and at the same time, the drum 7 winds the upper part of the net bag 1 onto the net frame 2. The net on the side of the net bag 1 extends from the top of the drum 7 and connects to the bottom of the net bag 1. As the net frame 2 covers the durian from the bottom and pushes upwards, when multiple durians are pressed together, the spikes of the durians will get stuck in the mesh of the net bag 1, causing the net bag 1 to move downwards. Alternatively, after the bottom of the net bag 1 contacts the bottom of the durian, the bottom of the durian pushes the net bag 1 downwards. At this time, the roller 7 is pulled and releases the net bag 1, allowing the net frame 2 to continue moving upwards to keep the durian inside the net bag 1. As the roller 7 rotates, the net bag 1 is continuously released from the arc-shaped claw 5, ensuring that the net bag 1 can smoothly cover the durian. When the net bag 1 is released, the first spring 9 is compressed, thereby storing elastic potential energy. After harvesting, the net bag 1 on the connecting rod 3 is placed on the ground, and the harvested durians are taken out of the net bag 1. After the durians are taken out, the roller 7 is rotated again under the action of the first spring 9, and the net bag 1 is re-rolled onto the roller 7. During durian harvesting, adjacent durians are spread out to both sides by the net frame 2. Pushing the net frame 2 upwards will not cause adjacent durians to move upwards; the stems of adjacent durians are only subject to horizontal left-right swaying. This effectively protects adjacent durians during harvesting, preventing damage to their stems. This invention can be used in conjunction with scissors or cutters, such as long-handled scissors or cutters, or scissors or cutters mounted on a long pole. The cut durians enter the net bag 1, safely transferring them to the ground.

[0023] Specifically, a plurality of rollers 10 are mounted on the base frame 4, and the rollers 10 are located below the roll 7 and are rotatably connected to the base frame 4. The rollers 10 support the roll 7 and reduce the friction force on the net bag 1 during movement, thereby reducing the upward pushing force on adjacent durians during harvesting. Because the movement resistance of the net bag 1 is reduced, a first spring 9 with lower elasticity can be selected, thereby further reducing the upward pushing force on the durians and protecting adjacent durians.

[0024] Specifically, the connecting rod 3 is a square telescopic rod. A sleeve 27 is fitted onto the uppermost section of the telescopic rod, allowing the sleeve 27 to slide up and down along the rod. The inner wall of the sleeve 27 has an annular groove 11, the plane of which is perpendicular to the axis of the telescopic rod. A helical track 12 is provided at the uppermost section of the telescopic rod, with a greater helix angle at the upper part than at the lower part. A ball bearing 13 is located at the intersection of the helical track 12 and the annular groove 11. The ball bearing 13 can roll along the helical track 12 and also along the annular groove 11. After the durian is picked and placed into the net bag 1, it slides downwards under the pressure of gravity, pressing down on the sleeve 27. Since the ball bearing 13 is located at the intersection of the spiral track 12 and the annular groove 11, it rolls down the spiral track 12 and simultaneously along the annular groove 11 as the sleeve 27 slides downwards. The helix angle of the spiral track 12 at the upper part of the telescopic rod is greater than that at the lower part. The resistance encountered by the sleeve 27 at the beginning of its downward roll is relatively small, but increases as it slides to the bottom, thus reducing the initial rolling speed of the sleeve 27. This reduced speed protects the picked durian from damage. As the durian moves downwards, the spiral track 12 and the annular groove 11 work together to move the ball bearing 13, preventing the sleeve 27 and durian from rotating around the telescopic rod. Workers only need a small amount of force to control the telescopic rod to balance the torque generated by the rotation of the ball bearing 13, making it easy for workers to control the stability of the telescopic rod.

[0025] Specifically, the telescopic rod includes a bottom rod 14, a middle rod 15, a top rod 16, and a second spring 17. The bottom rod 14 is slidably connected to the middle rod 15, and the middle rod 15 is slidably connected to the top rod 16. The top rod 16 is provided with a spiral track 12. The second spring 17 is provided between the bottom rod 14 and the middle rod 15, and between the middle rod 15 and the top rod 16. The second spring 17 is used to push the telescopic rod to extend. After the top rod 16 retracts to the middle rod 15, the spiral track 12 is located outside the middle rod 15. The telescopic rod can extend and retract to accommodate durians of different heights. The telescopic rod is provided with a second spring 17. Under the action of the second spring 17, the telescopic rod has a tendency to extend. When the durian falls in the net bag 1, the second spring 17 has a buffering effect, reducing the impact force on the durian and preventing it from breaking when falling from a height. After the telescopic rod retracts, the spiral track 12 above the top rod 16 is still exposed, preventing the sleeve 27 from directly hitting the middle rod 15. When using it, you can support the base rod 14 on the ground, and then hold the base rod 14 with your hand and aim it at the durian.

[0026] Specifically, the beginning and end of the spiral track 12 are located on the same side of the top rod 16. The sleeve 27 is provided with a through hole 18, and a slider 19 and a third spring 20 are slidably connected to the through hole 18. The slider 19 has magnetism that attracts the ball bearings 13, and the third spring 20 pushes the slider 19 to move outward. The top rod 16 is slidably connected to a lever 21, and the lever 21 is provided with a clearance groove 24 to avoid the slider 19. When the sleeve 27 moves to the upper limit position and the lower limit position, the ball bearings 13 are in the same direction on the top rod 16, so that the ball bearings 13 are both located at the position of the slider 19. The lever 21 can slide upward along the top rod 16. When the lever 21 slides upward and aligns the clearance groove 24 with the slider 19, the slider 19 moves outward under the push of the spring. The ball 13 moves together into the through hole 18 under the magnetic attraction of the slider 19. At this time, the sleeve 27 can move upward to reset. After the sleeve 27 moves upward to reset, the lever 21 is pushed downward to make the clearance groove 24 misaligned with the slider 19. At this time, the lever 21 locks the slider 19 to prevent the slider 19 from moving outward. The ball 13 is restricted in the spiral track 12 and the annular groove 11.

[0027] Specifically, the top of the clearance groove 24 is an inclined surface. The slider 19 includes a movable column 22 and a push rod 23. The movable column 22 is provided with the clearance groove 24, and the push rod 23 is connected to the movable column 22. When the lever 21 slides downward, the inclined surface pushes the push rod 23 to move inward. When the lever 21 slides downward, the inclined surface pushes the push rod 23 to move inward, thereby pushing the movable column 22 inward and pushing the ball 13 back into the spiral track 12. After the clearance groove 24 is aligned with the push rod 23, the third spring 20 pushes the push rod 23 into the clearance groove 24, causing the ball 13 to disengage from the spiral track 12.

[0028] Specifically, the sleeve 27 is provided with a T-shaped groove 25, which is parallel to the axial direction of the sleeve 27, and the lever 21 is slidably connected to the T-shaped groove 25. A T-shaped block can be provided on the lever 21, which slides along the T-shaped groove 25 to ensure the stability of the lever 21's sliding.

[0029] Specifically, the bottom of the base rod 14 is provided with a support plate 26, which is used to support the ground. By supporting the support plate 26 on the ground, the harvester can also use his feet to fix it, which improves the stability of the harvesting process.

[0030] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A durian harvesting device, characterized in that, The device includes a net, a net frame, and a connecting rod. The net frame is located at the top of the connecting rod. The net frame includes a bottom frame, arc-shaped claws, fixed shafts, a drum, a linkage rod, and a first spring. Several fixed shafts are connected in series to form a closed annular ring. The bottom frame is located at the bottom of the annular ring and has several arc-shaped claws. The arc-shaped claws wrap around the inner side of the annular ring and are connected to the connecting rod. The drum is rotatably sleeved on the fixed shaft. One end of the drum has a linkage rod, and the other end has a groove. The linkage rod of the drum is inserted into the groove of an adjacent drum. The upper opening of the net is wound around the drum from the outside of the annular ring. The first spring is used to drive the drum to rotate and retract the net. The connecting rod is a square telescopic rod. The uppermost section of the telescopic rod is sleeved with a sleeve that can slide up and down along the telescopic rod. The inner wall of the sleeve has an annular groove, and the plane of the annular groove is parallel to the axis of the telescopic rod. The telescopic rod is vertically oriented, with a spiral track at its uppermost section. The spiral track has a greater helix angle at the upper part of the telescopic rod than at the lower part. Ball bearings are located at the intersection of the spiral track and the annular groove. The telescopic rod includes a bottom rod, a middle rod, a top rod, and a second spring. The beginning and end of the spiral track are located on the same side of the top rod. The sleeve has a through hole, through which a slider and a third spring are slidably connected. The slider has magnetism that attracts the ball bearings. The third spring pushes the slider outward. A lever is slidably connected to the top rod, and the lever has a clearance groove to avoid the slider. The top of the clearance groove is an inclined surface. The slider includes a movable column and a push rod. The movable column has the clearance groove, and the push rod is connected to the movable column. When the lever slides downward, the inclined surface pushes the push rod inward. The sleeve has a T-shaped groove parallel to the axis of the sleeve, and the lever is slidably connected to the T-shaped groove.

2. The durian harvesting device according to claim 1, characterized in that, The base frame is provided with a plurality of rollers, which are located below the drum and are rotatably connected to the base frame.

3. The durian harvesting device according to claim 1, characterized in that, The bottom rod is slidably connected to the middle rod, the middle rod is slidably connected to the top rod, the top rod is provided with the spiral track, and the second spring is provided between the bottom rod and the middle rod and between the middle rod and the top rod. The second spring is used to push the telescopic rod to extend. After the top rod is retracted to the middle rod, the spiral track is located outside the middle rod.

4. A durian harvesting device according to claim 3, characterized in that, The bottom of the base rod is provided with a support plate, which is used to support it on the ground.

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