Ear picking device and harvester

Abstract

The utility model provides an ear picking device and a harvester. An ear picking device comprises: a pair of ear picking rollers including a high ear picking roller and a low ear picking roller, the pair of ear picking rollers being adjacent left and right and arranged up and down in a high-low manner; the first ear picking plate is arranged above the low ear picking roller, and a gap is formed between the first ear picking plate and the low ear picking roller; the second ear picking plate is arranged above the high ear picking roller; and a gap is formed between the second ear picking plate and the high ear picking roller. The high snapping roller and the low snapping roller pull the stalks downwards to be matched with the gap between the first snapping plate and the second snapping plate to achieve the snapping function, the contact area and the contact time between clusters and the high snapping roller and between the clusters and the low snapping roller are reduced, the integrity of the clusters is improved, and the problem that the clusters fall off grains is solved. The problem that grains fall off when corn ears with low water content are harvested is solved; the stem pulling effect of the snapping roller is improved, the blocking problem is reduced, the harvesting effect and the working efficiency are improved, the user satisfaction degree is improved, and machine type popularization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesting platforms, in particular to an ear picking device and a harvester. Background Art

[0002] At present, the existing corn harvesters are divided into two types according to the different ear picking methods: roller corn harvesters and plate corn harvesters. Among them, the roller corn harvester has a spiral rib ear picking roller + rubber baffle technology route. The front part of the ear picking roller is equipped with spiral ribs, which can realize the upward transportation of the stalks and the function of pulling the stalks down at the same time; the strong tension steel bars at the rear end can force the stalks that are not completely pulled down to be pulled down; the rubber baffle can reduce the contact between the ears and the ear picking roller and reduce the collision of the grains. When harvesting corn ears with low moisture content, this structure is very likely to cause the ear picking roller to collide with the ears, causing serious problems of grain loss. At the same time, the ear picking roller with spiral ribs has a poor stem pulling effect and is prone to blockage.

[0003] At present, the ear picking device on the cutting table of roller corn harvesters on the market adopts an ear picking roller with spiral ribs at the front end and strong tensile steel bars at the rear end in combination with a rubber baffle to achieve the ear picking function. When harvesting ears with low water content, the picked ears come into contact with the moving ear picking roller, causing the kernels of the ears to fall, affecting the integrity of the corn ears and the corn yield. At the same time, the ear picking roller with spiral ribs has a poor stem pulling effect and is prone to blockage, affecting the user's harvesting effect and work efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an ear picking device and a harvester in view of the deficiencies in the prior art.

[0005] The utility model solves the above-mentioned technical problems with a technical solution as follows: an ear picking device, comprising: a pair of ear picking rollers, comprising a high ear picking roller and a low ear picking roller, the pair of ear picking rollers being adjacent to each other on the left and right and arranged up and down; a first ear picking plate, arranged above the low ear picking roller, a gap being provided between the first ear picking plate and the low ear picking roller; a second ear picking plate, arranged above the high ear picking roller, a gap being provided between the second ear picking plate and the high ear picking roller.

[0006] The beneficial effects of the technical solution of the utility model are: the high ear picking roller and the low ear picking roller pull down the stem to cooperate with the gap between the first ear picking plate and the second ear picking plate to realize the ear picking function, reduce the contact area and contact time between the ear and the high ear picking roller and the low ear picking roller, improve the integrity of the ear, and reduce the problem of ear grains falling off. Improve the problem of corn ears falling off when harvesting corn with low moisture content; improve the stem pulling effect of the ear picking roller, reduce the problem of blockage, improve the harvesting effect and operation efficiency, improve user satisfaction, and facilitate the promotion of the model.

[0007] Furthermore, the low ear-picking roller includes: a first ear-picking roller joint assembly, a first spiral rib, a second spiral rib, a third spiral rib, and a plurality of first strong-tension steel bars, the first spiral rib, the second spiral rib, the third spiral rib and the plurality of first strong-tension steel bars are all installed on the first ear-picking roller joint assembly, a plurality of first front steel bars are arranged between the first spiral rib, the second spiral rib and the third spiral rib, and the plurality of first front steel bars are parallel to the axis of the first ear-picking roller joint assembly.

[0008] The beneficial effect of adopting the above further technical solution is: by adding the first front steel bar between the first spiral bar, the second spiral bar and the third spiral bar of the low ear picking roller, the stem pulling effect of the low ear picking roller is further improved. The first spiral bar at the front 1 / 2 of the low ear picking roller and the three sections of the first front steel bars arranged circumferentially, as well as the second spiral bar and the four sections of the first front steel bars evenly distributed circumferentially, cooperate with the six stem pulling plates at the front 1 / 2 of the high ear picking roller to rotate and pull the stems downward. During the rotation of the high ear picking roller and the low ear picking roller, the first front steel bar of the low ear picking roller cooperates with the stem pulling plate of the high ear picking roller, which can reduce the gap between the high ear picking roller and the low ear picking roller to increase the squeezing force and contact time between the high ear picking roller and the low ear picking roller and the stem, and improve the stem pulling effect of the high ear picking roller and the low ear picking roller. At the same time, the first spiral rib, the second spiral rib and the third spiral rib of the low ear picking roller can realize that the stem has a certain pushing ability for the ears stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling of the stem, which can reduce the accumulation and blockage of the ears at the end of the first ear picking plate and the second ear picking plate. The ear picking function is realized by pulling the stem downward by the high ear picking roller and the low ear picking roller in coordination with the gap between the first ear picking plate and the second ear picking plate, reducing the contact area and contact time between the ears and the high ear picking roller and the low ear picking roller, improving the integrity of the ears, and reducing the problem of falling grains from the ears. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the high ear picking roller and the low ear picking roller.

[0009] Furthermore, the first spiral reinforcement is adjacent to the front part of the first ear-picking roller joint assembly, the plurality of the first strong-tension steel bars are adjacent to the rear end of the first ear-picking roller joint assembly, the second spiral reinforcement and the third spiral reinforcement are located between the first spiral reinforcement and the plurality of the first strong-tension steel bars, the first spiral reinforcement, the second spiral reinforcement and the third spiral reinforcement are connected in sequence, and the first spiral reinforcement, the second spiral reinforcement and the third spiral reinforcement have the same rotation direction.

[0010] The beneficial effect of adopting the above further technical solution is: by adding the first front steel bar between the first spiral rib, the second spiral rib and the third spiral rib of the low ear-picking roller, the stem pulling effect of the low ear-picking roller is further improved.

[0011] Furthermore, the diameter of the first spiral rib is 10 mm, the diameter of the second spiral rib is 8 mm, and the diameter of the third spiral rib is 6 mm.

[0012] Furthermore, the high ear-picking roller includes: a second ear-picking roller joint assembly, a fourth spiral rib, and a plurality of second strong-tension steel bars. The fourth spiral rib and the plurality of second strong-tension steel bars are all installed on the second ear-picking roller joint assembly. A plurality of second front steel bars are arranged between the fourth spiral ribs. The plurality of second front steel bars are parallel to the axis of the second ear-picking roller joint assembly. A stem pulling plate is provided on the second ear-picking roller joint assembly. The fourth spiral rib is located between the stem pulling plate and the plurality of second strong-tension steel bars. The length of the stem pulling plate is less than the length of the high ear-picking roller.

[0013] The beneficial effect of adopting the above further technical scheme is that the first spiral rib at the front 1 / 2 of the low ear picking roller and the three sections of the first front steel bars arranged circumferentially, as well as the second spiral rib and the four sections of the first front steel bars evenly distributed circumferentially, cooperate with the six stem pulling plates at the front 1 / 2 of the high ear picking roller to rotate and pull the stems downward. During the rotation of the high ear picking roller and the low ear picking roller, the first front steel bar of the low ear picking roller cooperates with the stem pulling plate of the high ear picking roller, which can reduce the gap between the high ear picking roller and the low ear picking roller to increase the squeezing force and contact time between the high ear picking roller and the low ear picking roller and the stem, improve the stem pulling effect of the high ear picking roller and the low ear picking roller, realize the ear picking function by pulling the stems downward by the high ear picking roller and the low ear picking roller in cooperation with the gap between the first ear picking plate and the second ear picking plate, reduce the contact area and contact time between the ear and the high ear picking roller and the low ear picking roller, improve the integrity of the ear, and reduce the problem of ear grains falling. The stalks that have not been separated and some of the broken stalks continue to be transported backwards under the pulling action of the high ear picking roller and the low ear picking roller.

[0014] Furthermore, the high ear-picking roller comprises: a third ear-picking roller joint assembly and a plurality of stem-pulling plates arranged on the third ear-picking roller joint assembly.

[0015] The beneficial effect of adopting the above-mentioned further technical scheme is that the first front steel bar of the low ear-picking roller cooperates with the stem-pulling plate of the high ear-picking roller, which can reduce the gap between the high ear-picking roller and the low ear-picking roller to increase the squeezing force and contact time between the high ear-picking roller and the low ear-picking roller and the stem, thereby improving the stem-pulling effect of the high ear-picking roller and the low ear-picking roller.

[0016] Furthermore, the length of the stem pulling plate is equal to the length of the ear picking roller.

[0017] The beneficial effect of adopting the above further technical solution is: making the stem pulling plate compatible with the ear picking roller, thereby improving the stem pulling effect of the ear picking roller.

[0018] Furthermore, the length of the first ear picking plate ranges from one half to three quarters of the length of the ear picking roller.

[0019] The beneficial effect of adopting the above further technical solution is that the length of the ear picking plate matches the length of the ear picking roller, thereby improving the stem pulling effect.

[0020] Furthermore, a pair of ear picking rollers are connected to an ear picking gear box, a grain-picking tooth chain is provided above the first ear picking plate, and the grain-picking tooth chain is connected to the grain-picking chain gear box and the grain-picking chain tensioning device; an ear-picking plate guide plate is provided at the front of the first ear picking plate and / or the second ear picking plate, and a rubber baffle or a metal baffle is provided at the rear of the first ear picking plate.

[0021] The beneficial effects of adopting the above further technical solution are: the ear picking gear box drives the ear picking roller to rotate, the moving straw tooth chain pushes the stem into the middle channel of the ear picking device, and the first front cone, the second front cone and the third front cone guide the stem into the ear picking roller. The ear picking plate guide plate smoothly transitions the stem to the ear picking plate, and the ear picking plate guide plate can reduce the problem of stem jamming and feeding blockage. The rubber baffle or metal baffle can reduce the collision between the ear and the ear picking roller, and reduce the problem of grain falling from the ear.

[0022] In addition, the utility model also provides a harvester, comprising an ear picking device as described in any one of the above items.

[0023] The beneficial effects of the technical solution of the utility model are: the high ear picking roller and the low ear picking roller pull down the stem to cooperate with the gap between the first ear picking plate and the second ear picking plate to realize the ear picking function, reduce the contact area and contact time between the ear and the high ear picking roller and the low ear picking roller, improve the integrity of the ear, and reduce the problem of ear grains falling off. Improve the problem of corn ears falling off when harvesting corn with low moisture content; improve the stem pulling effect of the ear picking roller, reduce the problem of blockage, improve the harvesting effect and operation efficiency, improve user satisfaction, and facilitate the promotion of the model.

[0024] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic structural diagram of an ear picking device provided in an embodiment of the utility model.

[0026] Figure 2 This is one of the structural schematic diagrams of the ear picking roller provided in the embodiment of the utility model.

[0027] Figure 3 The second structural schematic diagram of the ear picking roller provided in the embodiment of the utility model.

[0028] Figure 4 The third structural schematic diagram of the ear picking roller provided in the embodiment of the utility model.

[0029] Explanation of the accompanying numbers: 1. the first ear-picking plate; 2. the stem-pulling plate; 3. the first ear-picking roller joint assembly; 4. the first spiral rib; 5. the second spiral rib; 6. the third spiral rib; 7. the first strong-tension steel bar; 8. the first front steel bar; 9. the first front cone; 10. the first ear-picking roller front support; 11. the first ear-picking roller reversal steel bar; 12. the second ear-picking roller joint assembly; 13. the fourth spiral rib; 14. the second strong-tension steel bar; 15. the second front steel bar; 16. the second front cone; 17. the second ear-picking roller front support; 18. the second ear-picking roller reversal steel bar; 19. the second ear-picking plate; 20. the ear-picking gear box; 21. the straw-pulling tooth chain; 22. the straw-pulling chain gear box; 23. the straw-pulling chain tensioning device; 24. the ear-picking plate guide plate; 25. the rubber baffle; 26. the third ear-picking roller joint assembly; 27. the third ear-picking roller front support; 28. the third front cone. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figures 1 to 4 As shown, an ear picking device includes: a pair of ear picking rollers, including a high ear picking roller and a low ear picking roller, the pair of ear picking rollers are adjacent to each other left and right and are arranged in different heights up and down; a first ear picking plate 1 is arranged above the low ear picking roller, and a gap is provided between the first ear picking plate 1 and the low ear picking roller; a second ear picking plate 19 is arranged above the high ear picking roller, and a gap is provided between the second ear picking plate 19 and the high ear picking roller.

[0032] The height of the low ear picking roller in the pair of ear picking rollers is smaller than that of the high ear picking roller, and at least one of the ear picking rollers (the low ear picking roller or the high ear picking roller) is provided with a plurality of stem pulling plates 2.

[0033] The beneficial effects of the technical solution of the utility model are: the high ear picking roller and the low ear picking roller pull down the stem to cooperate with the gap between the first ear picking plate and the second ear picking plate to realize the ear picking function, reduce the contact area and contact time between the ear and the high ear picking roller and the low ear picking roller, improve the integrity of the ear, and reduce the problem of ear grains falling off. Improve the problem of corn ears falling off when harvesting corn with low moisture content; improve the stem pulling effect of the ear picking roller, reduce the problem of blockage, improve the harvesting effect and operation efficiency, improve user satisfaction, and facilitate the promotion of the model.

[0034] like Figures 1 to 4As shown, further, the low ear-picking roller includes: a first ear-picking roller joint assembly 3, a first spiral rib 4, a second spiral rib 5, a third spiral rib 6, and a plurality of first strong-tension steel bars 7. The first spiral rib 4, the second spiral rib 5, the third spiral rib 6 and the plurality of first strong-tension steel bars 7 are all installed on the first ear-picking roller joint assembly 3. A plurality of first front steel bars 8 are arranged between the first spiral rib 4, the second spiral rib 5 and the third spiral rib 6. The plurality of first front steel bars 8 are parallel to the axis of the first ear-picking roller joint assembly 3.

[0035] The beneficial effect of adopting the above further technical solution is: by adding the first front steel bar between the first spiral bar, the second spiral bar and the third spiral bar of the low ear picking roller, the stem pulling effect of the low ear picking roller is further improved. The first spiral bar at the front 1 / 2 of the low ear picking roller and the three sections of the first front steel bars arranged circumferentially, as well as the second spiral bar and the four sections of the first front steel bars evenly distributed circumferentially, cooperate with the six stem pulling plates at the front 1 / 2 of the high ear picking roller to rotate and pull the stems downward. During the rotation of the high ear picking roller and the low ear picking roller, the first front steel bar of the low ear picking roller cooperates with the stem pulling plate of the high ear picking roller, which can reduce the gap between the high ear picking roller and the low ear picking roller to increase the squeezing force and contact time between the high ear picking roller and the low ear picking roller and the stem, and improve the stem pulling effect of the high ear picking roller and the low ear picking roller. At the same time, the first spiral rib, the second spiral rib and the third spiral rib of the low ear picking roller can realize that the stem has a certain pushing ability for the ears stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling of the stem, which can reduce the accumulation and blockage of the ears at the end of the first ear picking plate and the second ear picking plate. The ear picking function is realized by pulling the stem downward by the high ear picking roller and the low ear picking roller in coordination with the gap between the first ear picking plate and the second ear picking plate, reducing the contact area and contact time between the ears and the high ear picking roller and the low ear picking roller, improving the integrity of the ears, and reducing the problem of falling grains from the ears. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the high ear picking roller and the low ear picking roller.

[0036] Among them, the first front steel bars 8 are parallel to the axis of the first ear-picking roller joint assembly 3. The first front steel bars play a role in pulling the stems, improving the pulling effect. The first strong pulling steel bars are of different lengths, and the length is determined according to the curve of the third spiral bar 6, which is used to further improve the pulling effect.

[0037] The length of the first front steel bar 8 must be within the spiral pitch (the respective pitches of the first spiral bar 4, the second spiral bar 5 and the third spiral bar 6, the pitch between the first spiral bar 4 and the second spiral bar 5, and the pitch between the second spiral bar 5 and the third spiral bar 6), and there is no requirement for the angle.

[0038] like Figures 1 to 4As shown, further, a first front cone 9 is installed at the front part of the first ear-picking roller joint assembly 3, and a spiral protrusion is provided on the first front cone 9, and a first ear-picking roller front support 10 is provided between the first front cone 9 and the first ear-picking roller joint assembly 3; a first ear-picking roller reversal steel bar 11 is installed at the rear end of the first ear-picking roller joint assembly 3, and the rotation direction of the first ear-picking roller reversal steel bar 11 is opposite to that of the first spiral bar 4.

[0039] The beneficial effects of adopting the above further technical solution are: the first front cone is used to guide the stem into the ear picking roller. The setting of the spiral protrusion improves the introduction efficiency. The first ear picking roller reversal steel bar has the function of preventing grass entanglement. Among them, the first ear picking roller reversal steel bar 11 has a rotation direction opposite to that of the main spiral (first spiral bar), and the first ear picking roller reversal steel bar 11 is reverse spiral.

[0040] The first spiral rib 4 is adjacent to the front of the first ear-picking roller joint assembly 3, and the plurality of first strong-tension steel bars 7 are adjacent to the rear end of the first ear-picking roller joint assembly 3. The second spiral rib 5 and the third spiral rib 6 are located between the first spiral rib 4 and the plurality of first strong-tension steel bars 7. The first spiral rib 4, the second spiral rib 5 and the third spiral rib 6 are connected in sequence, and the first spiral rib 4, the second spiral rib 5 and the third spiral rib 6 have the same rotation direction.

[0041] The beneficial effect of adopting the above further technical solution is: by adding the first front steel bar between the first spiral rib, the second spiral rib and the third spiral rib of the low ear-picking roller, the stem pulling effect of the low ear-picking roller is further improved.

[0042] The diameter of the first spiral rib 4 is 10 mm, the diameter of the second spiral rib 5 is 8 mm, the diameter of the third spiral rib 6 is 6 mm, and the number of the first strong tensile steel bars 7 is 4.

[0043] The two groups of ear-picking rollers are installed in a trumpet shape, with a large gap at the front end and a small gap at the rear end, so the outer diameter of the third spiral rib at the rear end is small to adapt to the structure of the two groups of ear-picking rollers.

[0044] like Figures 1 to 4 As shown, further, the high ear-picking roller includes: a second ear-picking roller joint assembly 12, a fourth spiral rib 13, and a plurality of second strong-tension steel bars 14, the fourth spiral rib 13 and the plurality of second strong-tension steel bars 14 are all installed on the second ear-picking roller joint assembly 12, a plurality of second front steel bars 15 are arranged between the fourth spiral ribs 13, the plurality of second front steel bars 15 are parallel to the axis of the second ear-picking roller joint assembly 12, a stem pulling plate 2 is arranged on the second ear-picking roller joint assembly 12, the fourth spiral rib 13 is located between the stem pulling plate 2 and the plurality of second strong-tension steel bars 14, and the length of the stem pulling plate 2 is less than the length of the high ear-picking roller.

[0045] The beneficial effect of adopting the above further technical scheme is that the first spiral rib at the front 1 / 2 of the low ear picking roller and the three sections of the first front steel bars arranged circumferentially, as well as the second spiral rib and the four sections of the first front steel bars evenly distributed circumferentially, cooperate with the six stem pulling plates at the front 1 / 2 of the high ear picking roller to rotate and pull the stems downward. During the rotation of the high ear picking roller and the low ear picking roller, the first front steel bar of the low ear picking roller cooperates with the stem pulling plate of the high ear picking roller, which can reduce the gap between the high ear picking roller and the low ear picking roller to increase the squeezing force and contact time between the high ear picking roller and the low ear picking roller and the stem, improve the stem pulling effect of the high ear picking roller and the low ear picking roller, realize the ear picking function by pulling the stems downward by the high ear picking roller and the low ear picking roller in cooperation with the gap between the first ear picking plate and the second ear picking plate, reduce the contact area and contact time between the ear and the high ear picking roller and the low ear picking roller, improve the integrity of the ear, and reduce the problem of ear grains falling. The stalks that have not been separated and some of the broken stalks continue to be transported backwards under the pulling action of the high ear picking roller and the low ear picking roller.

[0046] like Figure 3 As shown, further, a second front cone 16 is installed at the front part of the second ear-picking roller joint assembly 12, and a spiral protrusion is provided on the second front cone 16, and a second ear-picking roller front support 17 is provided between the second front cone 16 and the second ear-picking roller joint assembly 12; a second ear-picking roller reversal steel bar 18 is installed at the rear end of the second ear-picking roller joint assembly 12, and the rotation direction of the second ear-picking roller reversal steel bar 18 is opposite to that of the fourth spiral bar 13; the fourth spiral bar 13 is located between the stem pulling plate 4 and a plurality of the second strong-tension steel bars 14, the number of the stem pulling plates 2 is 6 pieces, the diameter of the fourth spiral bar 13 is 6 mm, the number of the second front steel bars 15 is 3 sections, and the number of the second strong-tension steel bars 14 is 4 sections.

[0047] The beneficial effect of adopting the above further technical solution is that the second front cone is used to guide the stems into the ear picking roller. The reverse steel bars of the second ear picking roller have the function of preventing grass from being entangled.

[0048] like Figure 4 As shown, the high ear-picking roller may include: a third ear-picking roller joint assembly 26, a third ear-picking roller front support 27, a third front cone 28 and a plurality of stem pulling plates 2, the stem pulling plates 2 and the third ear-picking roller front support 27 are both mounted on the third ear-picking roller joint assembly 26, the third front cone 28 is mounted on the front part of the third ear-picking roller joint assembly 26, and the third ear-picking roller front support 27 is arranged adjacent to the third front cone 28.

[0049] Furthermore, the high ear-picking roller comprises: a third ear-picking roller joint assembly and a plurality of stem-pulling plates arranged on the third ear-picking roller joint assembly.

[0050] The beneficial effect of adopting the above-mentioned further technical scheme is that the first front steel bar of the low ear-picking roller cooperates with the stem-pulling plate of the high ear-picking roller, which can reduce the gap between the high ear-picking roller and the low ear-picking roller to increase the squeezing force and contact time between the high ear-picking roller and the low ear-picking roller and the stem, thereby improving the stem-pulling effect of the high ear-picking roller and the low ear-picking roller.

[0051] like Figure 3 to Figure 4 As shown, further, the length of the stem pulling plate 2 is less than the length of the ear picking roller, or the length of the stem pulling plate 2 is equal to the length of the ear picking roller.

[0052] The beneficial effect of adopting the above further technical solution is: the stem pulling plate is adapted to the ear picking roller, and the stem pulling effect of the ear picking roller is improved.

[0053] like Figure 1 As shown, further, a pair of ear picking rollers are arranged adjacent to each other, and the length of the first ear picking plate 1 ranges from one half to three quarters of the length of the ear picking roller.

[0054] The beneficial effect of adopting the above further technical solution is that the length of the ear picking plate matches the length of the ear picking roller, thereby improving the stem pulling effect.

[0055] The length of the second ear picking plate 19 and the first ear picking plate 1 can range from 1 / 3 of the length of the ear picking roller (high ear picking roller or low ear picking roller) to the full length of the ear picking roller (high ear picking roller or low ear picking roller). The gap between the first ear picking plate 1 and the low ear picking roller and the gap between the second ear picking plate 19 and the high ear picking roller are both less than or equal to 10 mm, meeting the adjustment range of the ear picking roller (high ear picking roller or low ear picking roller), and non-interference is the standard.

[0056] like Figures 1 to 4 As shown, further, a pair of ear picking rollers are connected to an ear picking gear box 20, a grain-picking tooth chain 21 is provided above the first ear picking plate 1, and the grain-picking tooth chain 21 is connected to a grain-picking chain gear box 22 and a grain-picking chain tensioning device 23; an ear-picking plate guide plate 24 is provided at the front of the first ear picking plate 1 and / or the second ear picking plate 19, and a rubber baffle 25 or a metal baffle is provided at the rear of the first ear picking plate 1.

[0057] The beneficial effects of adopting the above further technical solution are: the ear picking gear box drives the ear picking roller to rotate, the moving straw tooth chain pushes the stem into the middle channel of the ear picking device, and the first front cone, the second front cone and the third front cone guide the stem into the ear picking roller. The ear picking plate guide plate smoothly transitions the stem to the first ear picking plate and the second ear picking plate, and the ear picking plate guide plate can reduce the problem of stem jamming and feeding blockage. The rubber baffle or the metal baffle can reduce the collision between the ear and the ear picking roller, and reduce the problem of grain falling from the ear.

[0058] The rear portion of the second ear picking plate 19 may also be provided with a rubber baffle 25 or a metal baffle.

[0059] An ear picking device provided by an embodiment of the utility model can be a low-loss roller type corn harvesting platform ear picking device, which is intended to solve: 1. Improving the problem of grains falling when harvesting corn ears with low moisture content; 2. Improving the stem pulling effect of the ear picking roller, reducing the problem of blockage, improving the harvesting effect and working efficiency, improving user satisfaction, and facilitating the promotion of the model.

[0060] The diameter of the first spiral rib 4 can be The diameter of the second spiral rib 5 can be The diameter of the third spiral rib 6 can be The first front steel bar 8 may be 11 in number and have a diameter of The first strong tensile steel bar 7 may be 4 in number and have a diameter of The number of the first ear picking roller reversal steel bars 11 can be two sections.

[0061] The number of the stem pulling plates 2 can be 6, and the diameter of the fourth spiral rib 13 can be The number of the second front steel bars 15 can be 3 sections, the number of the second strong-tension steel bars 14 can be 4 sections, and the number of the second ear-picking roller reversal steel bars 18 can be 2 sections.

[0062] The ear picking gear box 20 drives a pair of ear picking rollers (a high ear picking roller and a low ear picking roller) to rotate, and the moving straw-pushing tooth chain 21 pushes the stalks into the middle channel of the ear picking device, and the first front cone 9 and the second front cone 16 guide the stalks into the pair of ear picking rollers, and the ear picking plate guide plate 24 smoothly transitions the stalks to the first ear picking plate and the second ear picking plate. The first spiral rib 4, the second spiral rib 5 and the third spiral rib 6 at the front 1 / 2 of the low ear picking roller and the three sections of the first front steel bars 8 arranged circumferentially cooperate with the six stem pulling plates 2 at the front 1 / 2 of the high ear picking roller to rotate to pull the stalks downward, and adjust the matching gap between the first ear picking plate and the second ear picking plate. In the process of the ear picking rollers (the high ear picking roller and the low ear picking roller) pulling the stalks downward, the corn ears are stuck above the first ear picking plate 1 and the second ear picking plate 19 by the matching gap between the first ear picking plate and the second ear picking plate, and the stalks are continued to be pulled downward, so as to achieve the separation of the ears and the stalks. The lower ear of fruit slides along the first ear picking plate 1 to the ear of fruit conveying device; the ear picking plate guide plate 24 can reduce the problems of stem jamming and feeding blockage. During the rotation of the two groups of ear picking rollers, the second front steel bar 15 of the low ear picking roller cooperates with the stem pulling plate of the high ear picking roller, which can reduce the gap between the two ear picking rollers to increase the squeezing force and contact time between the ear picking roller and the stem, and improve the stem pulling effect of the ear picking roller. At the same time, the fourth spiral rib 13 carried by the high ear picking roller can achieve a certain pushing ability for the ear of fruit stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling of the stem, which can reduce the problem of ear accumulation and blockage at the end positions of the first ear picking plate and the second ear picking plate. The ear picking function is achieved by pulling the stem downward by the ear picking roller in coordination with the gap between the first ear picking plate and the second ear picking plate, reducing the contact area and contact time between the ear of fruit and the ear picking roller, improving the integrity of the ear of fruit, and reducing the problem of ear grain falling.

[0063] The unseparated and partially broken stalks continue to be transported backwards under the pulling action of the ear-picking rollers. A rubber baffle 25 is installed above the low ear-picking roller at the 1 / 2 position behind the two groups of ear-picking rollers. The first front steel bar is circumferentially arranged at the position of the spiral ribs (the first spiral rib 4, the second spiral rib 5 and the third spiral rib 6) at the front end. In the process of the spiral ribs pulling the stems downward, the first front steel bar can assist in pulling the stems. The first strong-tension steel bars are evenly distributed circumferentially at the rear end to force the remaining stalks that have not been pulled down to pull downward, thereby achieving the forced stem pulling function and reducing the accumulation of the stalks. The first ear-picking roller reversing steel bars are evenly distributed circumferentially at the end of the first strong-tension steel bars, which have the effect of preventing grass entanglement. The rubber baffle or the metal baffle can reduce the collision between the ear and the ear-picking roller, and reduce the problem of the ear dropping grains. By adding the first front steel bar at the position of the spiral ribs (the first spiral rib 4, the second spiral rib 5 and the third spiral rib 6) of the ear-picking roller, the stem pulling effect of the ear-picking roller is further improved.

[0064] In addition, the utility model also provides a harvester, comprising an ear picking device as described in any one of the above items.

[0065] The beneficial effects of the technical solution of the utility model are: the high ear picking roller and the low ear picking roller pull down the stem to cooperate with the gap between the first ear picking plate and the second ear picking plate to realize the ear picking function, reduce the contact area and contact time between the ear and the high ear picking roller and the low ear picking roller, improve the integrity of the ear, and reduce the problem of ear grains falling off. Improve the problem of corn ears falling off when harvesting corn with low moisture content; improve the stem pulling effect of the ear picking roller, reduce the problem of blockage, improve the harvesting effect and operation efficiency, improve user satisfaction, and facilitate the promotion of the model.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A picking device, characterized in that: include: A pair of ear picking rollers, including a high ear picking roller and a low ear picking roller, wherein the pair of ear picking rollers are adjacent to each other and arranged vertically; A first ear picking plate is arranged above the low ear picking roller, and a gap is provided between the first ear picking plate and the low ear picking roller; The second ear-picking plate is arranged above the high ear-picking roller; and a gap is provided between the second ear-picking plate and the high ear-picking roller.

2. The ear picking device according to claim 1, characterized in that: The low ear-picking roller includes a first ear-picking roller joint assembly, a first spiral rib, a second spiral rib, a third spiral rib, and a plurality of first strong-tension steel bars. The first spiral rib, the second spiral rib, the third spiral rib and the plurality of first strong-tension steel bars are all installed on the first ear-picking roller joint assembly. A plurality of first front steel bars are arranged between the first spiral rib, the second spiral rib and the third spiral rib. The plurality of first front steel bars are parallel to the axis of the first ear-picking roller joint assembly.

3. The ear picking device according to claim 2, characterized in that: The first spiral rib is adjacent to the front of the first ear-picking roller joint assembly, and the first plurality of strong-tension steel bars are adjacent to the rear end of the first ear-picking roller joint assembly. The second spiral rib and the third spiral rib are located between the first spiral rib and the first plurality of strong-tension steel bars. The first spiral rib, the second spiral rib and the third spiral rib are connected in sequence, and the first spiral rib, the second spiral rib and the third spiral rib have the same rotation direction.

4. The ear picking device according to claim 3, characterized in that: The diameter of the first spiral rib is 10 mm, the diameter of the second spiral rib is 8 mm, and the diameter of the third spiral rib is 6 mm.

5. The ear picking device according to claim 2, characterized in that: The high ear-picking roller includes: a second ear-picking roller joint assembly, a fourth spiral rib, and a plurality of second strong-tension steel bars. The fourth spiral rib and the plurality of second strong-tension steel bars are all installed on the second ear-picking roller joint assembly. A plurality of second front steel bars are arranged between the fourth spiral ribs. The plurality of second front steel bars are parallel to the axis of the second ear-picking roller joint assembly. A stem pulling plate is arranged on the second ear-picking roller joint assembly. The fourth spiral rib is located between the stem pulling plate and the plurality of second strong-tension steel bars. The length of the stem pulling plate is less than the length of the high ear-picking roller.

6. The ear picking device according to claim 2, characterized in that: The high ear-picking roller comprises: a third ear-picking roller joint assembly and a plurality of stem-pulling plates arranged on the third ear-picking roller joint assembly.

7. The ear picking device according to claim 6, characterized in that: The length of the stem pulling plate is equal to the length of the ear picking roller.

8. The ear picking device according to claim 1, characterized in that: The length of the first ear picking plate ranges from one half to three quarters of the length of the ear picking roller.

9. The ear picking device according to any one of claims 1 to 8, characterized in that: A pair of ear picking rollers are connected to an ear picking gear box, a grain-picking tooth chain is provided above the first ear picking plate, and the grain-picking tooth chain is connected to the grain-picking chain gear box and the grain-picking chain tensioning device; an ear-picking plate guide plate is provided at the front of the first ear picking plate and / or the second ear picking plate, and a rubber baffle or a metal baffle is provided at the rear of the first ear picking plate.

10. A harvester, characterized in that: A ear picking device comprising any one of claims 1 to 9.

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