Ear picking roller, ear picking device and harvester

Abstract

The utility model provides an ear picking roller, an ear picking device and a harvester. The utility model discloses a snapping roller and a snapping roller joint assembly. Each section of spiral rib surrounds the front part of the snapping roll joint assembly, and the diameter of each section of spiral rib is sequentially reduced from front to back along the snapping roll joint assembly; the plurality of strong tensile steel bars are circumferentially arranged at the rear end of the snapping roll joint assembly; and the plurality of front steel bars are connected to the snapping roller joint assembly and are arranged among the sections of spiral bars. Through the arrangement of the front steel bar, the gap between the pair of snapping rollers can be reduced to increase the extrusion force and contact time between the snapping rollers and stalks, and the stalk pulling effect of the snapping rollers is improved. The stalks which are not separated and partially broken continue to be conveyed backwards under the stalk pulling action of the ear picking roller, the rest stalks which are not pulled down are forcibly pulled downwards through the strong pulling steel bars at the rear end, the forced stalk pulling function is achieved, and accumulation of the stalks is reduced. The problem that grains fall off when corn ears with low water content are harvested can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesting platforms, in particular to an ear picking roller, 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 roller, 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 the following technical solutions: an ear-picking roller, comprising: an ear-picking roller joint assembly; at least two sections of spiral ribs, each section of the spiral ribs surrounding the front part of the ear-picking roller joint assembly, and the diameter of each section of the spiral ribs decreasing successively from front to back along the ear-picking roller joint assembly; a plurality of strong-tension steel bars, the plurality of strong-tension steel bars being circumferentially arranged at the rear end of the ear-picking roller joint assembly; a plurality of front steel bars, connected to the ear-picking roller joint assembly and arranged between each section of the spiral ribs.

[0006] The beneficial effects of the technical solution of the utility model are as follows: the setting of the front steel bar can reduce the gap between a pair of ear picking rollers to increase the squeezing force and contact time between the ear picking rollers and the stalks, and improve the stalk pulling effect of the ear picking rollers. The unseparated stalks and partially broken stalks continue to be transported backwards under the pulling action of the ear picking rollers, and the strong pulling steel bar at the rear end forces the remaining stalks that have not been pulled down to pull downwards, thereby realizing the forced pulling function and reducing the accumulation of stalks. The problem of corn ears with low moisture content dropping grains can be solved.

[0007] Furthermore, the spiral reinforcement includes: a first spiral reinforcement, a second spiral reinforcement, and a third spiral reinforcement. The first spiral reinforcement, the second spiral reinforcement, and the third spiral reinforcement are sequentially installed at the front of the ear-picking roller joint assembly, and the plurality of front steel bars are parallel to the axis of the ear-picking roller joint assembly.

[0008] The beneficial effects of the technical solution of the utility model are as follows: the first spiral rib, the second spiral rib and the front steel bar in front of the ear picking roller rotate together to pull the stalk downward, which can reduce the gap between a pair of ear picking rollers to increase the squeezing force and contact time between the ear picking rollers and the stalks, improve the stem pulling effect of the ear picking rollers, and the unseparated stalks and partially broken stalks continue to be transported backward under the pulling action of the ear picking rollers. The rear end is evenly distributed with multiple sections of strong pulling steel bars to force the remaining stalks that have not been pulled down to pull downward, so as to realize the forced stem pulling function and reduce the accumulation of stalks. The problem of corn ears with low moisture content dropping grains can be solved.

[0009] Furthermore, the first spiral rib, the second spiral rib and the third spiral rib have the same rotation direction.

[0010] Furthermore, an ear-picking roller reverse steel bar is installed at the rear end of the ear-picking roller joint assembly, and the rotation direction of the ear-picking roller reverse steel bar is opposite to the rotation direction of the spiral bar.

[0011] The beneficial effect of adopting the above further technical solution is that multiple sections of ear-picking roller reverse steel bars are evenly distributed circumferentially at the end of the strong-tension steel bar, which has the effect of preventing grass entanglement.

[0012] 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.

[0013] The beneficial effect of adopting the above-mentioned further technical solution is that a pair 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 diameter of each section of the spiral rib decreases from front to back along the ear-picking roller joint to adapt to the two sets of ear-picking roller structures.

[0014] In addition, the utility model also provides an ear picking device, comprising: a pair of ear picking rollers according to any one of the above items, the pair of ear picking rollers are adjacent to each other on the left and right and are arranged in different heights up and down, and also comprises: a first ear picking plate, the first ear picking plate is installed above the low ear picking roller, and there is a gap between the first ear picking plate and the low ear picking roller.

[0015] The beneficial effects of the technical solution of the utility model are: the ear picking function is realized 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 and the ear picking roller, improving the integrity of the ear, and reducing the problem of the ear dropping grains. The first spiral rib, the second spiral rib and the front steel bar in front of a pair of ear picking rollers rotate together to pull the stem downward, 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 stem has a certain pushing ability for the ear stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling process, which can reduce the problem of the ear accumulation and blockage at the end position of the first ear picking plate and the second ear picking plate. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the ear picking roller, and the rear end is uniformly distributed in the circumferential direction. The multiple sections of strong pulling steel bars are forced to pull the remaining stems that have not been pulled down downward, realizing the forced stem pulling function and reducing the accumulation of the stems. The problem of corn ears dropping kernels when harvesting corn with low moisture content can be solved.

[0016] Furthermore, a second ear-picking plate is provided above the high ear-picking roller, a gap is provided between the second ear-picking plate and the high ear-picking roller, and a gap is provided between the second ear-picking plate and the first ear-picking plate.

[0017] The beneficial effect of adopting the above-mentioned further technical scheme is: adjusting the fitting clearance of the first ear picking plate and the second ear picking plate, and in the process of the ear picking roller pulling the stem downward, the corn ears are clamped above the first ear picking plate and the second ear picking plate by the fitting clearance of the first ear picking plate and the second ear picking plate, while the stem is continued to be pulled downward, thereby realizing the separation of the ears and the stem, and the picked ears slide off the first ear picking plate to the ear conveying device.

[0018] 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.

[0019] The beneficial effects of adopting the above further technical solution are: the ear picking gear box drives a pair of ear picking rollers to rotate, and the moving straw chain pushes the stems into the middle channel of the ear picking device. The ear picking plate guide plate smoothly transitions the stems to the ear picking plate, which can reduce the problems 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 grains falling from the ear.

[0020] Furthermore, a pair of ear picking rollers are mirror images, the high ear picking roller and the low ear picking roller are arranged adjacent to each other, and the length of the first ear picking plate ranges from one half to three quarters of the length of the ear picking roller.

[0021] The beneficial effect of adopting the above further technical solution is that the length of the first ear picking plate matches the length of the ear picking roller. 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, thereby reducing the contact area and contact time between the ear and the ear picking roller, improving the integrity of the ear, and reducing the problem of grains falling from the ear.

[0022] In addition, the utility model also provides a harvester, comprising any one of the ear picking devices described above.

[0023] The beneficial effects of the technical solution of the utility model are: the ear picking function is realized 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 and the ear picking roller, improving the integrity of the ear, and reducing the problem of the ear dropping grains. The first spiral rib, the second spiral rib and the front steel bar in front of a pair of ear picking rollers rotate together to pull the stem downward, 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 stem has a certain pushing ability for the ear stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling process, which can reduce the problem of the ear accumulation and blockage at the end position of the first ear picking plate and the second ear picking plate. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the ear picking roller, and the rear end is uniformly distributed in the circumferential direction. The multiple sections of strong pulling steel bars are forced to pull the remaining stems that have not been pulled down downward, realizing the forced stem pulling function and reducing the accumulation of the stems. The problem of corn ears dropping kernels when harvesting corn with low moisture content can be solved.

[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 roller provided in an embodiment of the utility model.

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

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

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

[0029] Figure 5 A schematic structural diagram of a harvester provided in an embodiment of the utility model.

[0030] Explanation of the accompanying numbers: 1. ear-picking roller joint assembly; 2. first spiral rib; 3. second spiral rib; 4. third spiral rib; 5. strong tensile steel bar; 6. front steel bar; 7. front cone; 8. front support of ear-picking roller; 9. reversing steel bar of ear-picking roller; 10. second ear-picking plate; 11. first ear-picking plate; 12. ear-picking gear box; 13. straw-picking tooth chain; 14. straw-picking chain gear box; 15. straw-picking chain tensioning device; 16. straw-picking plate guide plate; 17. rubber baffle. DETAILED DESCRIPTION

[0031] 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.

[0032] like Figure 1 As shown, an embodiment of the utility model provides an ear-picking roller, comprising: an ear-picking roller joint assembly 1; at least two sections of spiral ribs, each section of the spiral ribs surrounding the front part of the ear-picking roller joint assembly 1, and the diameter of each section of the spiral ribs decreasing successively from front to back along the ear-picking roller joint assembly 1; a plurality of strong tensile steel bars 5, the plurality of strong tensile steel bars 5 are circumferentially arranged at the rear end of the ear-picking roller joint assembly 1; a plurality of front steel bars 6, connected to the ear-picking roller joint assembly 1 and arranged between each section of the spiral ribs.

[0033] The beneficial effects of the technical solution of the utility model are as follows: the setting of the front steel bar can reduce the gap between a pair of ear picking rollers to increase the squeezing force and contact time between the ear picking rollers and the stalks, and improve the stalk pulling effect of the ear picking rollers. The unseparated stalks and partially broken stalks continue to be transported backwards under the pulling action of the ear picking rollers, and the strong pulling steel bar at the rear end forces the remaining stalks that have not been pulled down to pull downwards, thereby realizing the forced pulling function and reducing the accumulation of stalks. The problem of corn ears with low moisture content dropping grains can be solved.

[0034] The ear picking roller includes: an ear picking roller joint assembly 1, a first spiral rib 2, a second spiral rib 3, and a third spiral rib 4. The first spiral rib 2, the second spiral rib 3, and the third spiral rib 4 are sequentially installed at the front of the ear picking roller joint assembly 1, and the plurality of front steel bars 6 are parallel to the axis of the ear picking roller joint assembly 1.

[0035] The beneficial effects of the technical solution of the utility model are as follows: the first spiral rib, the second spiral rib and the front steel bar in front of the ear picking roller rotate together to pull the stalk downward, which can reduce the gap between a pair of ear picking rollers to increase the squeezing force and contact time between the ear picking rollers and the stalks, improve the stem pulling effect of the ear picking rollers, and the unseparated stalks and partially broken stalks continue to be transported backward under the pulling action of the ear picking rollers. The rear end is evenly distributed with multiple sections of strong pulling steel bars to force the remaining stalks that have not been pulled down to pull downward, so as to realize the forced stem pulling function and reduce the accumulation of stalks. The problem of corn ears with low moisture content dropping grains can be solved.

[0036] The front steel bar 6 is parallel to the axis of the ear-picking roller joint assembly 1, and the front steel bar plays a role in pulling the stems, thereby improving the pulling effect. The multiple strong pulling steel bars are of different lengths, and the length is determined according to the curve of the third spiral bar 4, so as to further improve the pulling effect.

[0037] like Figure 1 As shown, further, a front cone 7 is installed at the front part of the ear-picking roller joint assembly 1, a spiral protrusion is provided on the front cone 7, and an ear-picking roller front support 8 is provided between the front cone 7 and the ear-picking roller joint assembly 1.

[0038] The beneficial effects of adopting the above further technical solution are: the front cone is used to guide the stems into the ear picking roller. The setting of the spiral protrusion improves the introduction efficiency. The setting of the front support of the ear picking roller facilitates the installation and maintenance of the ear picking roller joint assembly.

[0039] Furthermore, the first spiral rib 2 , the second spiral rib 3 , and the third spiral rib 4 have the same rotation direction.

[0040] like Figure 1 As shown, further, an ear-picking roller reverse steel bar 9 is installed at the rear end of the ear-picking roller joint assembly 1, and the rotation direction of the ear-picking roller reverse steel bar 9 is opposite to that of the first spiral bar 2.

[0041] The beneficial effect of adopting the above further technical solution is that multiple sections of ear-picking roller reverse steel bars are evenly distributed circumferentially at the end of the strong-tension steel bar, which has the effect of preventing grass entanglement.

[0042] Among them, the reverse steel bar 9 of the picking roller can have a rotation direction opposite to that of the first spiral bar.

[0043] like Figure 1 As shown, further, the first spiral rib 2 is adjacent to the front part of the ear-picking roller joint assembly 1, the plurality of strong tensile steel bars 5 are adjacent to the rear end of the ear-picking roller joint assembly 1, the second spiral rib 3 and the third spiral rib 4 are located between the first spiral rib 2 and the plurality of strong tensile steel bars 5, the first spiral rib 2, the second spiral rib 3 and the third spiral rib 4 are connected in sequence, and the first spiral rib 2, the second spiral rib 3 and the third spiral rib 4 have the same rotation direction.

[0044] The beneficial effect of adopting the above further technical scheme is that the first spiral ribs and the circumferentially arranged multiple sections of front steel bars at the front of a pair of ear picking rollers and the second spiral ribs and the circumferentially evenly distributed multiple sections of front steel bars rotate together to pull the stems downward. By circumferentially arranged front steel bars at the position of the spiral ribs of the ear picking rollers, the gap between the two ear picking rollers can be reduced to increase the squeezing force and contact time between the ear picking rollers and the stems, and the stem pulling effect of the ear picking rollers can be improved. At the same time, the stems have a certain pushing ability for the ears stuck at the ear picking plate during the continuous downward pulling process, which can reduce the problem of accumulation and blockage of the ears at the end of the ear picking plate. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the ear picking rollers. The multiple sections of front steel bars are evenly distributed circumferentially at the position of the third spiral ribs at the front end. In the process of the spiral ribs pulling the stems downward, the front steel bars can play an auxiliary pulling effect. The multiple sections of strong pulling steel bars evenly distributed circumferentially at the rear end force the remaining stems that have not been pulled down to be pulled downward, realizing the forced pulling function and reducing the accumulation of the stems.

[0045] like Figure 1 As shown, further, the diameter of the first spiral rib 2 is 10 mm, the diameter of the second spiral rib 3 is 8 mm, the diameter of the third spiral rib 4 is 6 mm, and the number of the strong tensile steel bars 5 is 4 sections.

[0046] The beneficial effect of adopting the above-mentioned further technical solution is that a pair 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 diameter of each section of the spiral rib decreases from front to back along the ear-picking roller joint to adapt to the two sets of ear-picking roller structures.

[0047] The diameter of the first spiral reinforcement 2 may be φ10, the diameter of the second spiral reinforcement 3 may be φ8, the diameter of the third spiral reinforcement 4 may be φ6, the number of front steel bars 6 may be 11 sections, the diameter of the front steel bars 6 may be φ5, the number of strong-tension steel bars 5 may be 4 sections, the diameter of the strong-tension steel bars 5 may be φ8, and the number of ear-picking roller reversal steel bars 9 may be 2 sections.

[0048] like Figures 2 to 4 As shown, in addition, the utility model also provides an ear picking device, including: a pair of ear picking rollers according to any one of the above items, the pair of ear picking rollers are adjacent to each other on the left and right and are arranged in different heights up and down, and also include: a first ear picking plate 11, the first ear picking plate 11 is installed above the low ear picking roller, and there is a gap between the first ear picking plate 11 and the low ear picking roller.

[0049] The beneficial effects of the technical solution of the utility model are: the ear picking function is realized 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 and the ear picking roller, improving the integrity of the ear, and reducing the problem of the ear dropping grains. The first spiral rib, the second spiral rib and the front steel bar in front of a pair of ear picking rollers rotate together to pull the stem downward, 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 stem has a certain pushing ability for the ear stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling process, which can reduce the problem of the ear accumulation and blockage at the end position of the first ear picking plate and the second ear picking plate. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the ear picking roller, and the rear end is uniformly distributed in the circumferential direction. The multiple sections of strong pulling steel bars are forced to pull the remaining stems that have not been pulled down downward, realizing the forced stem pulling function and reducing the accumulation of the stems. The problem of corn ears dropping kernels when harvesting corn with low moisture content can be solved.

[0050] A pair of ear picking rollers includes a low ear picking roller and a high ear picking roller.

[0051] like Figures 2 to 4 As shown, further, a second ear-picking plate 10 is provided above the high ear-picking roller, a gap is provided between the second ear-picking plate 10 and the high ear-picking roller, and a gap is provided between the second ear-picking plate 10 and the first ear-picking plate 11.

[0052] The beneficial effect of adopting the above-mentioned further technical scheme is: adjusting the fitting clearance of the first ear picking plate and the second ear picking plate, and in the process of the ear picking roller pulling the stem downward, the corn ears are clamped above the first ear picking plate and the second ear picking plate by the fitting clearance of the first ear picking plate and the second ear picking plate, while the stem is continued to be pulled downward, thereby realizing the separation of the ears and the stem, and the picked ears slide off the first ear picking plate to the ear conveying device.

[0053] Among them, the second ear picking plate 10 and the first ear picking plate 11 correspond to the positions of the high ear picking roller and the low ear picking roller respectively. The length range of the second ear picking plate 10 and the first ear picking plate 11 can be 1 / 3 of the length of the ear picking roller to the full length of the ear picking roller. The gap between the first ear picking plate 11 and the low ear picking roller and the gap between the second ear picking plate 10 and the high ear picking roller can be less than or equal to 10 mm, satisfying the adjustment range of the ear picking roller, and non-interference is the standard.

[0054] The first ear picking plate must be installed above the low ear picking roller to form a roller-type ear picking structure, which is used to prevent the ear from colliding with the ear picking roller and play a sealing role.

[0055] When a second ear picking plate is arranged above the high ear picking roller, a plate-type ear picking structure is formed.

[0056] like Figures 2 to 4As shown, further, a pair of ear picking rollers are connected to an ear picking gear box 12, a straw-pulling tooth chain 13 is provided above the first ear picking plate 11, and the straw-pulling tooth chain 13 is connected to a straw-pulling chain gear box 14 and a straw-pulling chain tensioning device 15; an ear picking plate guide plate 16 is provided at the front of the first ear picking plate 11 and / or the second ear picking plate 10, and a rubber baffle 17 or a metal baffle is provided at the rear of the first ear picking plate 11.

[0057] The beneficial effects of adopting the above further technical solution are: the ear picking gear box drives a pair of ear picking rollers to rotate, and the moving straw chain pushes the stems into the middle channel of the ear picking device. The ear picking plate guide plate smoothly transitions the stems to the ear picking plate, which can reduce the problems 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 grains falling from the ear.

[0058] The rear portion of the second ear picking plate 10 may also be provided with a rubber baffle 17 or a metal baffle.

[0059] like Figures 2 to 4 As shown, further, a pair of ear picking rollers are mirror images, the high ear picking roller and the low ear picking roller are arranged adjacent to each other, and the length of the first ear picking plate 11 ranges from half to three quarters of the length of the ear picking roller.

[0060] The beneficial effect of adopting the above further technical solution is that the length of the first ear picking plate matches the length of the ear picking roller. 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, thereby reducing the contact area and contact time between the ear and the ear picking roller, improving the integrity of the ear, and reducing the problem of grains falling from the ear.

[0061] Among them, the front steel bars corresponding to a pair of ear picking rollers must be in mirror image positions. The length of the front steel bars must be within the spiral pitch (the pitch of each of the first spiral bar 2, the second spiral bar 3 and the third spiral bar 4, the pitch between the first spiral bar 2 and the second spiral bar 3, and the pitch between the second spiral bar 3 and the third spiral bar 4), and there is no requirement for the angle.

[0062] The ear picking gear box 12 drives the low ear picking roller and the high ear picking roller to rotate, the moving straw-pushing tooth chain 13 pushes the stems into the middle channel of the ear picking device, the front cone guides the stems into a pair of ear picking rollers, and the ear picking plate guide plate 16 smoothly transitions the stems to between the first ear picking plate 11 and the second ear picking plate 10. The first spiral rib 2 and the 3 circumferentially arranged front steel bars 6 and the second spiral rib 3 and the 4 circumferentially evenly distributed front steel bars 6 at the front 1 / 2 of the pair of ear picking rollers rotate together to pull the stems downward, and the matching gap between the first ear picking plate and the second ear picking plate is adjusted. In the process of the ear picking roller pulling the stems downward, the corn ears are stuck above the first ear picking plate 11 and the second ear picking plate 10 by the matching gap between the first ear picking plate and the second ear picking plate, and the stems are continued to be pulled downward, so that the ears are separated from the stems, and the picked ears are The fruit ears slide along the first ear picking plate 11 to the fruit ear conveying device; the ear picking plate guide plate 16 can reduce the problems of stem jamming and feeding blockage, and the front steel bars 6 arranged circumferentially at the positions of the first spiral ribs, the second spiral ribs and the third spiral ribs can reduce the gap between the two ear picking rollers to increase the squeezing force and contact time between the ear picking rollers and the stems, thereby improving the stem pulling effect of the ear picking rollers. At the same time, the stems have a certain pushing ability for the fruit ears stuck at the ear picking plates during the continuous downward pulling of the stems, thereby reducing the problems of accumulation and jam of the fruit ears 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 stems downward by the ear picking rollers in coordination with the gap between the first ear picking plate and the second ear picking plate, thereby reducing the contact area and contact time between the fruit ears and the ear picking rollers, thereby improving the integrity of the fruit ears, and reducing the problem of falling grains from the fruit ears.

[0063] The unseparated stalks and partially broken stalks continue to be transported backwards under the pulling action of the ear picking rollers. A rubber baffle 17 is installed above the lower ear picking roller at the 1 / 2 position behind the two groups of ear picking rollers. Four sections of front steel bars 6 are evenly distributed circumferentially at the position of the third spiral rib 4 at the front end. In the process of the first spiral rib, the second spiral rib and the third spiral rib pulling the stalks downward, the front steel bars can assist in pulling the stalks. Four sections of strong-pulling steel bars 5 are evenly distributed circumferentially at the rear end to force the remaining stalks that have not been pulled down to pull downward, thereby realizing the forced stem pulling function and reducing the accumulation of stalks. Two sections of ear picking roller reversal steel bars 9 are evenly distributed circumferentially at the end of the strong-pulling steel bars, which have the effect of preventing grass entanglement. The rubber baffle 17 can reduce the collision between the ear and the ear picking roller, and reduce the problem of grains falling from the ear. By adding the front steel bars 6 at the position of the spiral ribs of the ear picking roller, the stem pulling effect of the ear picking roller is further improved.

[0064] A first ear picking plate 11 and a second ear picking plate 10 are installed above the front 1 / 2 of the ear picking roller, and the ear picking function is realized by pulling the stalk downwards by the ear picking roller in coordination with the gap between the first ear picking plate and the second ear picking plate, thereby reducing the contact area and contact time between the ear and the ear picking roller, improving the integrity of the ear, and reducing the problem of grain falling from the ear. The problem of grain falling from corn ears with low moisture content can be solved, the stem pulling effect of the ear picking roller is improved, the blockage problem is reduced, and the harvesting effect and working efficiency are improved.

[0065] like Figure 5 As shown, in addition, the utility model also provides a harvester, including the ear picking device described in any one of the above items.

[0066] The beneficial effects of the technical solution of the utility model are: the ear picking function is realized 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 and the ear picking roller, improving the integrity of the ear, and reducing the problem of the ear dropping grains. The first spiral rib, the second spiral rib and the front steel bar in front of a pair of ear picking rollers rotate together to pull the stem downward, 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 stem has a certain pushing ability for the ear stuck at the first ear picking plate and the second ear picking plate during the continuous downward pulling process, which can reduce the problem of the ear accumulation and blockage at the end position of the first ear picking plate and the second ear picking plate. The unseparated stems and partially broken stems continue to be transported backward under the pulling action of the ear picking roller, and the rear end is uniformly distributed in the circumferential direction. The multiple sections of strong pulling steel bars are forced to pull the remaining stems that have not been pulled down downward, realizing the forced stem pulling function and reducing the accumulation of the stems. The problem of corn ears dropping kernels when harvesting corn with low moisture content can be solved.

[0067] 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 roller, characterized in that: include: Picking roller joint parts; At least two sections of spiral ribs, each section of the spiral ribs surrounds the front part of the ear picking roller joint assembly, and the diameter of each section of the spiral ribs decreases from front to back along the ear picking roller joint assembly; A plurality of strong tensile steel bars, wherein the plurality of strong tensile steel bars are circumferentially arranged at the rear end of the ear picking roller joint assembly; A plurality of front steel bars are connected to the ear picking roller joint assembly and are arranged between each section of the spiral bars.

2. The ear picking roller according to claim 1, characterized in that: The spiral ribs include a first spiral rib, a second spiral rib, and a third spiral rib. The first spiral ribs, the second spiral ribs, and the third spiral ribs are sequentially installed at the front of the ear-picking roller joint assembly. The plurality of front steel bars are parallel to the axis of the ear-picking roller joint assembly.

3. The ear picking roller according to claim 2, characterized in that: The first spiral rib, the second spiral rib and the third spiral rib have the same hand direction.

4. The ear picking roller according to claim 3, characterized in that: The rear end of the ear picking roller joint assembly is provided with an ear picking roller reverse steel bar, and the rotation direction of the ear picking roller reverse steel bar is opposite to that of the spiral steel bar.

5. The ear picking roller according to claim 2, 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.

6. An ear picking device, characterized in that: include: A pair of ear-picking rollers according to any one of claims 1 to 5, the pair of ear-picking rollers are adjacent to each other left and right and arranged in different heights up and down, and also include: a first ear-picking plate, the first ear-picking plate is installed above the low ear-picking roller, and there is a gap between the first ear-picking plate and the low ear-picking roller.

7. The ear picking device according to claim 6, characterized in that: A second ear picking plate is provided above the high ear picking roller, a gap is provided between the second ear picking plate and the high ear picking roller, and a gap is provided between the second ear picking plate and the first ear picking plate.

8. The ear picking device according to claim 7, 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 a grain-picking chain gear box and a 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 or metal baffle is provided at the rear of the first ear picking plate.

9. The ear picking device according to claim 6, characterized in that: A pair of ear picking rollers are mirror images, the high ear picking roller and the low ear picking roller are arranged adjacent to each other, and the length of the first ear picking plate ranges from half to three quarters of the length of the ear picking roller.

10. A harvester, characterized in that: It comprises the ear picking device as described in any one of claims 6 to 9 above.

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