An automatic mulberry leaf picking device with three layers from top to bottom

Abstract

The present invention discloses an automatic mulberry leaf picking device from top to bottom, which includes a transverse movement mechanism, a collection mechanism, a picking mechanism, and a clamping mechanism; a first lifting platform, a second lifting platform, and a third lifting platform are respectively arranged on the collection mechanism, the picking mechanism, and the clamping mechanism, and a gear rack mechanism is installed on each side of each lifting platform. The structures of the three lifting platforms are completely the same, and they are all connected to the lifting guide rail to realize lifting; a collection box is installed on the lower left rod and the lower right rod of the collection mechanism to complete the collection of mulberry leaves; when the three rods of the picking mechanism are closed, the single-sided steel needle plate and the double-sided steel needle plate cooperate with each other to form a plurality of cylindrical picking channels; a spring is provided on the clamping component of the clamping mechanism, so that the clamping mechanism can clamp mulberry branches of different shapes and sizes; the mulberry leaf picking device can realize the picking and collection of all mulberry leaves of a single mulberry tree and has a certain protective effect on mulberry branches.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery, and particularly to an automatic three-layer mulberry leaf picking device from top to bottom. Background Art

[0002] With the rapid development of the sericulture industry, the demand for mulberry leaves has increased sharply. The factory-based and intelligent sericulture model has become the future development trend, and the mechanized picking of mulberry leaves is the key bottleneck restricting this model. Therefore, there is an urgent need to develop an automatic mulberry leaf picking device to meet the current development needs. The existing mulberry leaf picking devices mainly adopt the method from bottom to top, and cut the petioles of mulberry leaves through blades to complete the picking of mulberry leaves. However, during the picking process, the fallen mulberry leaves are easily accumulated on the blades, resulting in the blades getting stuck with the mulberry leaves and reducing the picking efficiency. In addition, the stuck mulberry leaves need to be manually cleaned and collected, increasing the labor intensity of workers. Therefore, it is particularly important to improve the mulberry leaf picking mechanism and increase the mulberry leaf picking efficiency. Summary of the Invention

[0003] The purpose of the present invention is to solve one of the technical problems mentioned in the above background, and provide an automatic three-layer mulberry leaf picking device from top to bottom. The device has a reasonable structure and strong feasibility, and can realize the picking and collection of all mulberry leaves of a single mulberry tree.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: an automatic three-layer mulberry leaf picking device from top to bottom, including a transverse movement mechanism, a collection mechanism, a picking mechanism, and a clamping mechanism; a first lifting platform, a second lifting platform, and a third lifting platform are respectively arranged on the collection mechanism, the picking mechanism, and the clamping mechanism. A gear-rack mechanism is installed on each side of each lifting platform. The three lifting platforms have exactly the same structure and are all based on four vertical columns symmetrically installed perpendicular to the transverse movement mechanism, and are connected to the lifting guide rails through sliders to achieve lifting.

[0005] The gear-rack mechanism includes a gear and a rack. The rack is installed on two vertical columns symmetrically installed perpendicular to the transverse movement mechanism, and the gear meshes with the rack.

[0006] The collection mechanism includes a first lifting platform, a lower left rod, a middle lower rod, a lower right rod, a branch dialing disc, a semi-circular arch, a semi-circular platform, a collection box, and a collection box electric push rod; the first lifting platform includes a first U-shaped plate, a first lifting motor, a first synchronous belt, a first lifting shaft, a first vertical base, a first slider, a first lifting platform side plate, a first concave plate, a first crossed roller bearing, a first electric push rod, a first heightening plate, and a first rod opening and closing assembly; the first lifting motor and the first vertical base are fixed on the first U-shaped plate, and the first lifting shaft is installed on the first vertical base, with a gear installed at each end of the shaft, connected to the rack and pinion mechanism through the gears; through the first synchronous belt, the first lifting motor drives the first lifting shaft to move; the first electric push rod and the first heightening plate are both installed on the first concave plate, and two first crossed roller bearings are symmetrically installed on the first concave plate along the central axis, and the first rod opening and closing assembly is connected to the first electric push rod; the first U-shaped plate and the first concave plate are both fixed on the first lifting platform side plate and are connected to the lifting guide rail through the first slider; the lower left rod and the lower right rod are installed on the first concave plate through the first crossed roller bearing, and the middle lower rod is connected to the first concave plate through the first heightening plate; a semi-circular arch and a semi-circular platform are respectively installed on the lower left rod, the middle lower rod, and the lower right rod, and a collection box and a collection box electric push rod are respectively installed on the lower left rod and the lower right rod.

[0007] The picking mechanism includes a second lifting platform, a left rod, a middle rod, a right rod, a single-sided steel needle plate, a double-sided steel needle plate, a lifting plate, a lifting rod, a lifting electric push rod, and a guide rod; the second lifting platform includes a second U-shaped plate, a second lifting motor, a second synchronous belt, a second lifting shaft, a second vertical base, a second slider, a second lifting platform side plate, a second concave plate, a second crossed roller bearing, a second electric push rod, a second heightening plate, and a second rod opening and closing assembly; the second lifting motor and the second vertical base are fixed on the second U-shaped plate, and the second lifting shaft is installed on the second vertical base, with a gear installed at each end of the shaft, connected to the rack and pinion mechanism through the gears; through the second synchronous belt, the second lifting motor drives the second lifting shaft to move; the second electric push rod and the second heightening plate are both installed on the second concave plate, and two second crossed roller bearings are symmetrically installed on the second concave plate along the central axis, and the second rod opening and closing assembly is connected to the second electric push rod; the second U-shaped plate and the second concave plate are both fixed on the second lifting platform side plate and are connected to the lifting guide rail through the second slider; the left rod and the right rod are installed on the second concave plate through the second crossed roller bearing, and the middle rod is connected to the second concave plate through the second heightening plate; a semi-circular platform, a lifting electric push rod, and two guide rods are installed on each of the left rod, the middle rod, and the right rod, and steel needle holes are provided on the rods; the single-sided steel needle plate is installed on the left rod and the right rod through the guide rods and the steel needle holes, and the double-sided steel needle plate is installed on the middle rod through the guide rods and the steel needle holes; lifting plates are equipped on both the single-sided steel needle plate and the double-sided steel needle plate, and the lifting plates are connected to the lifting electric push rod.

[0008] The clamping mechanism includes the No. 3 lifting platform, the upper left rod, the upper middle rod, the upper right rod, the clamping assembly, and the baffle; the No. 3 lifting platform includes the No. 3 U-shaped plate, the No. 3 lifting motor, the No. 3 synchronous belt, the No. 3 lifting shaft, the No. 3 vertical base, the No. 3 slider, the No. 3 lifting platform side plate, the No. 3 concave plate, the No. 3 cross roller bearing, the No. 3 electric push rod, the No. 3 pad plate and the No. 3 rod opening and closing assembly; the No. 3 lifting motor and the No. 3 vertical base are fixed on the No. 3 U-shaped plate, and the No. 3 lifting shaft is installed on the No. 3 vertical base, with a gear at each end of the shaft, which is connected to the gear rack mechanism through the gear; the No. 3 lifting motor drives the No. 3 lifting shaft to move through the No. 3 synchronous belt; the No. 3 electric push rod and the No. 3 The No. 3 raising plates are all installed on the No. 3 concave plate, and two No. 3 cross roller bearings are installed on the No. 3 concave plate symmetrically along the central axis. The No. 3 rod opening and closing assembly is connected to the No. 3 electric push rod; the No. 3 U-shaped plate and the No. 3 concave plate are both fixed on the No. 3 lifting platform side plate, and are connected to the lifting guide rail through the No. 3 slider; the upper left rod and the upper right rod are installed on the No. 3 concave plate through the No. 3 cross roller bearing, and the middle upper rod is connected to the No. 3 concave plate through the No. 3 raising plate; the ends of the upper left rod, the middle upper rod and the upper right rod are all equipped with a semicircular table, and baffles are installed on the side. The upper left rod and the upper right rod are each equipped with four clamping assemblies, and the middle upper rod is equipped with eight clamping assemblies symmetrically along the central axis.

[0009] Furthermore, the collection frame includes a collection frame rectangular plate, a metal hinge, a collection frame bottom plate, a collection frame trapezoidal plate, a slide, a slide lever and a collection frame mounting plate; the collection frame rectangular plate and the collection frame trapezoidal plate are both fixed on the collection frame mounting plate, and the collection frame mounting plate is installed on the lower left rod and the lower right rod; the collection frame bottom plate is connected to the collection frame rectangular plate through a metal hinge, and a slide is provided underneath, and the slide is connected to the collection frame electric push rod through the slide lever.

[0010] Furthermore, the collection mechanism features four semicircular holes on the right side of the front end of the left rod and on the left side of the front end of the right rod. Four semicircular holes are also symmetrically located on either side of the front end of the middle rod. These holes, working together, form multiple positioning channels, facilitating the positioning of mulberry branches during harvesting. The branch-moving discs on the lower middle rod and the upper middle rod of the clamping mechanism can move each mulberry branch into its corresponding positioning channel, preventing multiple branches from being trapped in a single channel and facilitating subsequent harvesting operations.

[0011] Furthermore, there is a single-sided steel needle plate on each of the left rod and the right rod, and a double-sided steel needle plate on the middle rod. When the three rods are closed, the single-sided steel needle plate and the double-sided steel needle plate cooperate with each other to form multiple cylindrical picking channels. During the picking operation, the steel needles on the steel needle plate will string up the mulberry leaves. At the end of the picking, the upward movement of the lifting electric push rod will drive the steel needle plate to move upward. Under the extrusion of the rods of the picking mechanism, the mulberry leaves on the steel needles will automatically fall into the collection mechanism, avoiding the occurrence of leaf jamming. At the same time, since the distance from the steel needle plate to the collection mechanism is short at this time, the mulberry leaves cannot fly around and are concentrated in the collection mechanism, thus improving the collection rate of mulberry leaves.

[0012] Furthermore, the clamping assembly includes a spring column, a spring, a clamping plate, a rubber plate and a nut. A rubber plate is installed on the upper surface of the clamping plate. Two spring columns are fixed at both ends of the rubber plate. Springs are installed on the spring columns. The elastic design of the springs effectively enhances the clamping force and adaptability. The springs are tightly connected to the clamping plate through the nuts at their ends, enabling the clamping plate to move flexibly left and right. The clamping plate is connected to the upper left rod, the middle upper rod and the upper right rod through the spring column, thus forming a linkage system, which not only increases the stability of the clamping process but also can adapt to mulberry branches of different shapes and sizes, greatly improving the flexibility and practicality of the picking device.

[0013] Furthermore, the opening and closing assembly of the first rod includes a first cylindrical pin, a first connecting groove, a first push rod head connecting plate and a first push rod head. A first push rod head connecting plate is installed on the push rod head. Two first connecting grooves are provided on the connecting plate, and each groove is connected with a first cylindrical pin. These cylindrical pins are respectively connected to the lower left rod and the lower right rod. The opening and closing assembly of the first rod is connected to the first electric push rod through the first push rod head.

[0014] Furthermore, the opening and closing assembly of the second rod includes a second cylindrical pin, a second connecting groove, a second push rod head connecting plate and a second push rod head. A second push rod head connecting plate is installed on the push rod head. Two second connecting grooves are provided on the connecting plate, and each groove is connected with a second cylindrical pin. These cylindrical pins are respectively connected to the left rod and the right rod. The opening and closing assembly of the second rod is connected to the second electric push rod through the second push rod head.

[0015] Furthermore, the opening and closing assembly of the third rod includes a third cylindrical pin, a third connecting groove, a third push rod head connecting plate and a third push rod head. A third push rod head connecting plate is installed on the push rod head. Two third connecting grooves are provided on the connecting plate, and each groove is connected with a third cylindrical pin. These cylindrical pins are respectively connected to the upper left rod and the upper right rod. The opening and closing assembly of the third rod is connected to the third electric push rod through the third push rod head.

[0016] The beneficial effects are that, compared with the prior art, the present invention has the following advantages:

[0017] 1. A lifting electric push rod is provided under each of the three rods of the above-mentioned picking mechanism. When picking is finished, the upward movement of the lifting electric push rod will drive the steel needle plate to move upward. Under the squeezing of the rods of the picking mechanism, the mulberry leaves on the steel needles will automatically fall into the collecting mechanism, avoiding the occurrence of leaf jamming, improving the picking rate of mulberry leaves, eliminating the manual cleaning process, and reducing labor intensity; at the same time, because the distance from the steel needle plate to the collecting mechanism is shorter at this time, the mulberry leaves cannot fly around and are concentrated in the collecting mechanism, thereby improving the collection rate of mulberry leaves.

[0018] 2. A plurality of rotatable branch-moving discs are provided under the middle and lower rods of the above-mentioned collecting mechanism and the middle and upper rods of the clamping mechanism, which facilitates moving each mulberry branch to a corresponding positioning hole, avoiding the situation where multiple mulberry branches are in one positioning hole, and facilitates subsequent picking operations; the bottom plate of the collecting frame is movable, and is opened and closed by the electric push rod and metal hinge of the collecting frame, which facilitates the transfer of mulberry leaves in the collecting frame to other collecting mechanisms.

[0019] 3. A rubber plate is provided on the clamping plate in the above-mentioned clamping assembly, and a spring is installed on the spring column, which not only improves the overall clamping efficiency, but also ensures the protection of mulberry branches during the mulberry leaf picking process and reduces damage. At the same time, the clamping assembly can adapt to mulberry branches of different shapes and sizes, greatly improving the flexibility and practicality of the picking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional diagram of a three-layer mulberry leaf automatic picking device from top to bottom according to the present invention.

[0021] Figure 2 It is a structural diagram of the collection mechanism of the present invention.

[0022] Figure 3 It is a structural diagram of the collection frame of the present invention.

[0023] Figure 4 This is a structural diagram of the picking mechanism of the present invention without the single-sided steel needle plate on the right rod.

[0024] Figure 5 This is a structural diagram of the single-sided steel needle plate of the picking mechanism of the present invention.

[0025] Figure 6 This is a structural diagram of the double-sided steel needle plates of the picking mechanism of the present invention.

[0026] Figure 7 It is a structural diagram of the clamping mechanism of the present invention.

[0027] Figure 8 It is a structural diagram of the clamping assembly of the clamping mechanism of the present invention.

[0028] Figure 9 It is the structure diagram of the upper layer of the No. 1 lifting platform of the present invention.

[0029] Figure 10 It is the structure diagram of the lower layer of the No. 1 lifting platform of the present invention.

[0030] Figure 11 It is the structure diagram of the upper layer of the No. 2 lifting platform of the present invention.

[0031] Figure 12 It is the structure diagram of the lower layer of the No. 2 lifting platform of the present invention.

[0032] Figure 13 It is the structure diagram of the upper layer of the No. 3 lifting platform of the present invention.

[0033] Figure 14 It is the structure diagram of the lower layer of the No. 3 lifting platform of the present invention.

[0034] Figure 15 It is the partial enlarged view of the connection between the rod member of the present invention and the lower layer of the lifting platform.

[0035] Figure 16 It is the structure diagram of the rack and pinion mechanism of the present invention.

[0036] In the figure: 1. Transverse movement mechanism; 2. Collection mechanism; 3. Picking mechanism; 4. Clamping mechanism; 6. Rack and pinion mechanism; 61. Gear; 62. Rack; 20. Lower left rod; 21. Middle lower rod; 22. Lower right rod; 23. Branch deflecting disc; 24. Semi-circular arch; 25. Semi-circular platform; 26. Collection frame; 260. Collection frame rectangular plate; 261. Metal hinge; 262. Collection frame bottom plate; 263. Collection frame trapezoidal plate; 264. Chute; 265. Chute shifting rod; 266. Collection frame mounting plate; 27. Collection frame electric push rod; 28. Semi-circular hole; 30. Left rod; 31. Middle rod; 32. Right rod; 33. Single-sided steel needle plate; 34. Double-sided steel needle plate; 35. Lifting plate; 36. Lifting rod; 37. Lifting electric push rod; 38. Guide rod; 39. Steel needle; 390. Steel needle hole; 40. Upper left rod; 41. Middle upper rod; 42. Upper right rod; 43. Clamping assembly; 430. Spring column; 431. Spring; 432. Clamping plate; 433. Rubber plate; 434. Nut; 44. Baffle; 51. First lifting platform; 5100. First U-shaped plate; 5101. First lifting motor; 5102. First synchronous belt; 5103. First lifting shaft; 5104. First vertical base; 5105. First slider; 5106. First lifting platform side plate; 5110. First concave plate; 5111. First crossed roller bearing; 5112. First electric push rod; 5113. First heightening plate; 512. First rod opening and closing assembly; 5120. First cylindrical pin; 5121. First connecting groove; 5122. First push rod head connecting plate; 5123. First push rod head; 52. Second lifting platform; 5200. Second U-shaped plate; 5201. Second lifting motor; 5202. Second synchronous belt; 5203. Second lifting shaft; 5204. Second vertical base; 5205. Second slider; 5206. Second lifting platform side plate; 5210. Second concave plate; 5211. Second crossed roller bearing; 5212. Second electric push rod; 5213. Second heightening plate; 522. Second rod opening and closing assembly; 5220. Second cylindrical pin; 5221. Second connecting groove; 5222. Second push rod head connecting plate; 5223. Second push rod head; 53. Third lifting platform; 5300. Third U-shaped plate; 5301. Third lifting motor; 5302. Third synchronous belt; 5303. Third lifting shaft; 5304. Third vertical base; 5305. Third slider; 5306. Third lifting platform side plate; 5310. Third concave plate; 5311. Third crossed roller bearing; 5312. Third electric push rod; 5313. Third heightening plate; 532. Third rod opening and closing assembly; 5320. Third cylindrical pin; 5321. Third connecting groove; 5322. Third push rod head connecting plate; 5323. Third push rod head. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present invention will be clearly and distinctly described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] As Figure 1 shown, an automatic mulberry leaf picking device with three layers from top to bottom includes a transverse movement mechanism 1, a collection mechanism 2, a picking mechanism 3, and a clamping mechanism 4; the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 are respectively installed on a first lifting platform 51, a second lifting platform 52, and a third lifting platform 53. A gear-rack mechanism 6 is installed on each side of each lifting platform. The structures of the three lifting platforms are exactly the same and are all based on four vertical columns symmetrically installed perpendicular to the transverse movement mechanism 1, and the lifting is realized by connecting the sliders with the lifting guide rails.

[0039] As Figure 16 shown, the gear-rack mechanism 6 includes a gear 61 and a rack 62. The rack 62 is installed on two vertical columns symmetrically installed perpendicular to the transverse movement mechanism, and the gear 61 meshes with the rack 62.

[0040] As Figure 2 、 Figure 3 、 Figure 9 、 Figure 10 and Figure 15As shown, the collection mechanism 2 includes a first lifting platform 51, a lower left rod 20, a middle lower rod 21, a lower right rod 22, a branch-pushing disc 23, a semi-circular arch 24, a semi-circular platform 25, a collection frame 26, and a collection frame electric push rod 27; the first lifting platform 51 includes a first U-shaped plate 5100, a first lifting motor 5101, a first synchronous belt 5102, a first lifting shaft 5103, a first vertical base 5104, a first slider 5105, a first lifting platform side plate 5106, a first concave plate 5110, a first crossed roller bearing 5111, a first electric push rod 5112, a first heightening plate 5113, and a first rod opening and closing assembly 512; the first lifting motor 5101 and the first vertical base 5104 are fixed on the first U-shaped plate 5100, and the first lifting shaft 5103 is installed on the first vertical base 5104. A gear 61 is installed at each end of the shaft, and is connected to the rack and pinion mechanism 6 through the gear 61; through the first synchronous belt 5102, the first lifting motor 5101 drives the first lifting shaft 5103 to move; the first electric push rod 5112 and the first heightening plate 5113 are both installed on the first concave plate 5110, and two first crossed roller bearings 5111 are symmetrically installed on the first concave plate 5110 along the central axis. The first rod opening and closing assembly 512 is connected to the first electric push rod 5112; the first U-shaped plate 5100 and the first concave plate 5110 are both fixed on the first lifting platform side plate 5106 and are connected to the lifting guide rail through the first slider 5105; the lower left rod 20 and the lower right rod 22 are installed on the first concave plate 5110 through the first crossed roller bearing 5111, and the middle lower rod 21 is connected to the first concave plate 5110 through the first heightening plate 5113; a semi-circular arch 24 and a semi-circular platform 25 are respectively installed on the lower left rod 20, the middle lower rod 21, and the lower right rod 22, and a collection frame 26 and a collection frame electric push rod 27 are respectively installed on the lower left rod 20 and the lower right rod 22.

[0041] As Figure 4 , Figure 5 , Figure 6 , Figure 11 , Figure 12 and Figure 15As shown, the picking mechanism 3 includes a second lifting platform 52, a left rod 30, an intermediate rod 31, a right rod 32, a single-sided steel needle plate 33, a double-sided steel needle plate 34, a lifting plate 35, a lifting rod 36, a lifting electric push rod 37, and a guide rod 38; the second lifting platform 52 includes a second U-shaped plate 5200, a second lifting motor 5201, a second synchronous belt 5202, a second lifting shaft 5203, a second vertical base 5204, a second slider 5205, a second lifting platform side plate 5206, a second concave plate 5210, a second crossed roller bearing 5211, a second electric push rod 5212, a second heightening plate 5213, and a second rod opening and closing assembly 522; the second lifting motor 5201 and the second vertical base 5204 are fixed on the second U-shaped plate 5200, and the second lifting shaft 5203 is installed on the second vertical base 5204, with a gear 61 installed at each end of the shaft, and connected to the gear rack mechanism 6 through the gear 61; through the second synchronous belt 5202, the second lifting motor 5201 drives the second lifting shaft 5203 to move; the second electric push rod 5212 and the second heightening plate 5213 are both installed on the second concave plate 5210, and two second crossed roller bearings 5211 are symmetrically installed on the second concave plate 5210 along the central axis, and the second rod opening and closing assembly 522 is connected to the second electric push rod 5212; the second U-shaped plate 5200 and the second concave plate 5210 are both fixed on the second lifting platform side plate 5206 and are connected to the lifting guide rail through the second slider 5205; the left rod 30 and the right rod 32 are installed on the second concave plate 5210 through the second crossed roller bearings 5211, and the intermediate rod 31 is connected to the second concave plate 5210 through the second heightening plate 5213; a semi-cylindrical platform 25, a lifting electric push rod 37, and two guide rods 38 are installed on each of the left rod 30, the intermediate rod 31, and the right rod 32, and steel needle holes 390 are provided on the rods; the single-sided steel needle plate 33 is installed on the left rod 30 and the right rod 32 through the guide rods 38 and the steel needle holes 390, and the double-sided steel needle plate 34 is installed on the intermediate rod 31 through the guide rods 38 and the steel needle holes 390; lifting plates 35 are provided on both the single-sided steel needle plate 33 and the double-sided steel needle plate 34, and the lifting plates 35 are connected to the lifting electric push rods 37.

[0042] As Figure 7 , Figure 8 , Figure 13 , Figure 14 and Figure 15As shown in the figure, the clamping mechanism 4 includes a third lifting platform 53, a left upper rod 40, a middle upper rod 41, a right upper rod 42, a clamping assembly 43, and a baffle 44; the third lifting platform 53 includes a third U-shaped plate 5300, a third lifting motor 5301, a third synchronous belt 5302, a third lifting shaft 5303, a third vertical base 5304, a third slider 5305, a third lifting platform side plate 5306, a third concave plate 5310, a third crossed roller bearing 5311, a third electric push rod 5312, a third heightening plate 5313, and a third rod opening and closing assembly 532; the third lifting motor 5301 and the third vertical base 5304 are fixed on the third U-shaped plate 5300, and the third lifting shaft 5303 is installed on the third vertical base 5304, with a gear 61 installed at each end of the shaft, which is connected to the gear and rack mechanism 6 through the gear 61; through the third synchronous belt 5302, the third lifting motor 5301 drives the third lifting shaft 5303 to move; the third electric push rod 5312 and the third heightening plate 5313 are both installed on the third concave plate 5310, and two third crossed roller bearings 5311 are symmetrically installed on the third concave plate 5310 along the central axis; the third rod opening and closing assembly 532 is connected to the third electric push rod 5312; the third U-shaped plate 5300 and the third concave plate 5310 are both fixed on the third lifting platform side plate 5306 and are connected to the lifting guide rail through the third slider 5305; the left upper rod 40 and the right upper rod 42 are installed on the third concave plate 5310 through the third crossed roller bearings 5311, and the middle upper rod 41 is connected to the third concave plate 5310 through the third heightening plate 5313; a semi-circular platform 25 is installed at the end of each of the left upper rod 40, the middle upper rod 41, and the right upper rod 42, and a baffle 44 is installed on the side. Four clamping assemblies 43 are installed on each of the left upper rod 40 and the right upper rod 42, and eight clamping assemblies 43 are symmetrically installed along the central axis of the middle upper rod 41.

[0043] Further, the collection box 26 includes a collection box rectangular plate 260, a metal hinge 261, a collection box bottom plate 262, a collection box trapezoidal plate 263, a chute 264, a chute lever 265, and a collection box mounting plate 266; the collection box rectangular plate 260 and the collection box trapezoidal plate 263 are both fixed on the collection box mounting plate 266, and the collection box mounting plate 266 is installed on the left lower rod 20 and the right lower rod 22; the collection box bottom plate 262 is connected to the collection box rectangular plate 260 through the metal hinge 261, and a chute 264 is provided below, which is connected to the collection box electric push rod 27 through the chute lever 265.

[0044] Further, four semi-circular holes 28 are provided on the right side of the front end of the left rod 30 and on the left side of the front end of the right rod 32, and four semi-circular holes 28 are symmetrically provided on each side of the front end of the middle rod 31. They cooperate with each other to form multiple positioning channels, which are convenient for fixing the position of mulberry branches during operation. The branch-pushing discs 23 on the middle and lower rods 21 and the upper and middle rods 41 can push each mulberry branch into a corresponding positioning channel, avoiding the situation where multiple mulberry branches are in one positioning channel, which is convenient for subsequent picking operations.

[0045] Further, a single-sided steel needle plate 33 is provided on each of the left rod 30 and the right rod 32, and a double-sided steel needle plate 34 is provided on the middle rod 31. When the three rods are closed, the single-sided steel needle plate 33 and the double-sided steel needle plate 34 cooperate with each other to form multiple cylindrical picking channels; during the picking operation, the steel needles 39 on the steel needle plate will string up the mulberry leaves. At the end of the picking, the upward movement of the lifting electric push rod 37 will drive the steel needle plate to move upward. Under the extrusion of the rods of the picking mechanism, the mulberry leaves on the steel needles 39 will automatically fall into the collection mechanism 2, avoiding the occurrence of leaf jamming; at the same time, since the distance from the steel needle plate to the collection mechanism is short at this time, the mulberry leaves cannot fly around and are concentrated in the collection mechanism, thereby improving the collection rate of mulberry leaves.

[0046] Further, the clamping assembly 43 includes a spring column 430, a spring 431, a clamping plate 432, a rubber plate 433 and a nut 434. A rubber plate 433 is installed on the upper surface of the clamping plate 432. Two spring columns 430 are fixed at both ends of the rubber plate 433. A spring 431 is installed on the spring column 430. The elastic design of the spring 431 effectively enhances the clamping force and adaptability. The spring 431 is tightly connected to the clamping plate 432 through the nut 434 at its end, enabling the clamping plate 432 to move flexibly left and right; the clamping plate 432 is connected to the upper left rod 40, the upper and middle rod 41 and the upper right rod 42 through the spring column 430, thus forming a linkage system, which not only increases the stability of the clamping process but also can adapt to mulberry branches of different shapes and sizes, greatly improving the flexibility and practicality of the picking device.

[0047] Further, the first rod opening and closing assembly 512 includes a first cylindrical pin 5120, a first connecting groove 5121, a first push rod head connecting plate 5122 and a first push rod head 5123; a first push rod head connecting plate 5122 is installed on the first push rod head 5123. Two first connecting grooves 5121 are provided on the connecting plate, and a first cylindrical pin 5120 is connected in each groove. These cylindrical pins are respectively connected to the lower left rod 20 and the lower right rod 22. The first rod opening and closing assembly 512 is connected to the first electric push rod 5112 through the first push rod head 5123.

[0048] Further, the second rod opening and closing assembly 522 includes a second cylindrical pin 5220, a second connecting groove 5221, a second push rod head connecting plate 5222, and a second push rod head 5223; the second push rod head 5223 is equipped with the second push rod head connecting plate 5222, the connecting plate is provided with two second connecting grooves 5221, and each groove is connected with a second cylindrical pin 5220, and these cylindrical pins are respectively connected to the lower left rod 20 and the lower right rod 22. The second rod opening and closing assembly 522 is connected to the second electric push rod 5212 through the second push rod head 5223.

[0049] Further, the third rod opening and closing assembly 532 includes a third cylindrical pin 5320, a third connecting groove 5321, a third push rod head connecting plate 5322, and a third push rod head 5323; the third push rod head 5323 is equipped with the third push rod head connecting plate 5322, the connecting plate is provided with two third connecting grooves 5321, and each groove is connected with a third cylindrical pin 5320, and these cylindrical pins are respectively connected to the lower left rod 20 and the lower right rod 22. The third rod opening and closing assembly 532 is connected to the third electric push rod 5312 through the third push rod head 5323.

[0050] When the mulberry leaf picking device of the present invention is in use, the starting positions of the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 are all at the bottom of the lifting guide rail, and a single picking cycle requires eight strokes.

[0051] Stroke 1: Push the branches forward. The first electric push rod 5112, the second electric push rod 5212, and the third electric push rod 5312 retract, and the first rod opening and closing assembly 512, the second rod opening and closing assembly 522, and the third rod opening and closing assembly 532 respectively drive the rods on the left and right sides of the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 to open; at the same time, the transverse movement mechanism 1 pushes the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 to move forward as a whole, and the middle rods of the three devices are inserted into the gaps of the mulberry branches at the bottom end of the mulberry tree, and the rods on the left and right sides of the three devices are respectively located on the left and right sides of the mulberry branches.

[0052] Stroke 2: Gather the branches. The first electric push rod 5112 is pushed forward, and the first rod opening and closing assembly 512 drives the lower left rod 20 and the lower right rod 22 of the collection mechanism 2 to close; the front ends of the three rods of the collection mechanism 2 pass through the mulberry tree, and the scattered branches are gathered into a plurality of cylindrical picking channels formed by the single-sided steel needle plate 33 and the double-sided steel needle plate 34.

[0053] Stroke 3: The picking mechanism 3 and the clamping mechanism 4 rise. The third lifting motor 5301 drives the third lifting platform 53 to drive the clamping mechanism 4 to rise to a suitable clamping position; at the same time, the second lifting motor 5201 drives the second lifting platform 52 to drive the picking mechanism 3 to rise to a suitable picking position.

[0054] Process Four: Branch clamping. The second electric push rod 5212 pushes forward, and the second rod opening and closing assembly 522 drives the left rod 30 and the right rod 32 of the picking mechanism 3 to close; at the same time, the third electric push rod 5312 pushes forward, and the third rod opening and closing assembly 532 drives the upper left rod 40 and the upper right rod 42 of the clamping mechanism 4 to close, and the mulberry branches at the top of the mulberry tree are clamped by the clamping assembly 43 to complete branch clamping.

[0055] Process Five: Mulberry leaf picking. The second lifting motor 5201 drives the second lifting platform 52 to move downward, driving the picking mechanism 3 to move downward to start the mulberry leaf picking work.

[0056] Process Six: Branch retraction. The first electric push rod 5112, the second electric push rod 5212, and the third electric push rod 5312 retract, and the first rod opening and closing assembly 512, the second rod opening and closing assembly 522, and the third rod opening and closing assembly 532 drive the rods on both sides of the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 to open respectively; then, the transverse movement mechanism 1 pushes the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 as a whole to move backward to disengage from the mulberry branches.

[0057] Process Seven: Leaf discharging. The first electric push rod 5112, the second electric push rod 5212, and the third electric push rod 5312 push forward, and the first rod opening and closing assembly 512, the second rod opening and closing assembly 522, and the third rod opening and closing assembly 532 drive the rods on both sides of the collection mechanism 2, the picking mechanism 3, and the clamping mechanism 4 to close respectively; the lifting electric push rod 37 drives the single-sided steel needle plate 33 and the double-sided steel needle plate 34 to move upward, and under the extrusion of the left rod 30, the middle rod 31, and the right rod 32, the mulberry leaves on the steel needles 39 automatically fall into the collection box 26 to complete the collection of mulberry leaves.

[0058] Process Eight: Return to the starting point. The second lifting motor 5201 drives the second lifting platform 52 to drive the picking mechanism 3 to descend to the initial position. At the same time, the third lifting motor 5301 drives the third lifting platform 53 to drive the clamping mechanism 4 to descend to the initial position, thus completing a single picking operation.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the technical solutions of the present invention. The purpose of the present invention is to solve one of the technical problems mentioned in the above background, and to provide an automatic mulberry leaf picking device with three layers from top to bottom. The device has a reasonable structure and strong feasibility, and can realize the picking and collection of all mulberry leaves of a single mulberry tree.

Claims

1. An automatic mulberry leaf picking device with three layers from top to bottom, characterized in that: It includes a transverse movement mechanism (1), a collection mechanism (2), a picking mechanism (3), and a clamping mechanism (4). The collection mechanism (2), the picking mechanism (3), and the clamping mechanism (4) are all based on four vertical columns symmetrically installed perpendicular to the transverse movement mechanism (1), and are connected to the lifting guide rails through sliders. A rack and pinion mechanism (6) is installed on each side of the collection mechanism (2), the picking mechanism (3), and the clamping mechanism (4); the collection mechanism (2) includes a first lifting platform (51), a lower left rod (20), a middle lower rod (21), a lower right rod (22), a collection box (26), and a collection box electric push rod (27). The first lifting platform (51) is based on four vertical columns symmetrically installed perpendicular to the transverse movement mechanism (1), and is connected to the lifting guide rails through sliders. A rack and pinion mechanism (6) is installed on each side of the first lifting platform (51). A collection box (26) and a collection box electric push rod (27) are installed on each of the lower left rod (20) and the lower right rod (22). The collection box (26) is connected to the collection box electric push rod (27) through a chute dial rod (265); the picking mechanism (3) includes a second lifting platform (52), a left rod (30), a middle rod (31), a right rod (32), a single-sided steel needle plate (33), a double-sided steel needle plate (34), and a guide rod (38). The second lifting platform (52) is based on four vertical columns symmetrically installed perpendicular to the transverse movement mechanism (1), and is connected to the lifting guide rails through sliders. A rack and pinion mechanism (6) is installed on each side of the second lifting platform (52). A single-sided steel needle plate (33) is installed on each of the left rod (30) and the right rod (32), and a double-sided steel needle plate (34) is installed on the middle rod (31). Lifting plates (35) are provided on both the single-sided steel needle plate (33) and the double-sided steel needle plate (34), and the lifting plates (35) are connected to lifting electric push rods (37). Two guide rods are installed on each of the left rod (30), the right rod (32), and the middle rod (31); the clamping mechanism (4) includes a third lifting platform (53), an upper left rod (40), a middle upper rod (41), an upper right rod (42), and a clamping assembly (43). The third lifting platform (53) is based on four vertical columns symmetrically installed perpendicular to the transverse movement mechanism (1), and is connected to the lifting guide rails through sliders. A rack and pinion mechanism (6) is installed on each side of the third lifting platform (53). Four clamping assemblies (43) are installed on the right side of the front end of the upper left rod (40) and the left side of the front end of the upper right rod (42), and eight clamping assemblies (43) are symmetrically installed along the central axis of the middle upper rod (41).

2. The automatic mulberry leaf picking device with three layers from top to bottom according to claim 1, characterized in that: Four semi-circular holes (28) are provided on the right side of the front end of the left rod (30) and the left side of the front end of the right rod (32), and four semi-circular holes (28) are provided on each side of the front end of the middle rod (31) symmetrically. A plurality of steel needle holes (390) are evenly distributed on the edge of each semi-circular hole (28); Steel needles (39) of the same size are evenly distributed on the single-sided steel needle plate (33) and the double-sided steel needle plate (34), and the distribution method and quantity of the steel needles (39) are the same as those of the steel needle holes (390).

3. The automatic mulberry leaf picking device with three layers from top to bottom according to claim 1, characterized in that: The clamping assembly (43) includes a spring post (430), a spring (431), a clamping plate (432), a rubber plate (433) and a nut (434). A rubber plate (433) is mounted on the upper surface of the clamping plate (432). Two spring posts (430) are fixed at both ends of the rubber plate (433). A spring (431) is mounted on the spring post (430). The spring (431) is tightly connected to the clamping plate (432) through the nut (434) at its end. The clamping plate (432) is connected to the upper left rod member (40), the middle upper rod member (41) and the upper right rod member (42) through the spring post (430). Six branch deflecting discs (23) are symmetrically mounted along the central axis under the middle lower rod member (21) and the middle upper rod member (41). There are holes in the middle of the branch deflecting discs (23), and they are connected to the middle lower rod member (21) and the middle upper rod member (41) through bolts.

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