Corn ear picking device and corn combine harvester

Abstract

The invention provides a corn ear picking device and a corn combine harvester, and relates to the technical field of agricultural mechanical equipment. The corn ear picking device comprises a rack, an ear picking mechanism and a driving mechanism, the ear picking mechanism comprises at least one pair of stem pulling rollers and an adjusting assembly connected to the stem pulling rollers, and a preset distance is formed between the paired stem pulling rollers; the driving mechanism is provided with at least one pair of rotating joints, the rotating joints are hinged to the stem pulling rollers in a one-to-one correspondence mode, and the rotating joints drive the paired stem pulling rollers to rotate, so that corn ears are separated from corn stalks; the stem pulling rollers are configured to relatively swing by taking the rotary joints as hinge points under the driving of corn stalks, so that the distance between the paired stem pulling rollers is adjusted; and the adjusting assembly is used for driving the paired stem pulling rollers to move, so that the paired stem pulling rollers return to the preset distance, and the distance between the stem pulling rollers close to the rotating joint is always small, so that ears are removed, the ear falling rate is reduced, and the ear leaving rate is reduced.

Description

Technical Field

[0001] This application relates to the technical field of agricultural machinery and equipment, and particularly relates to a corn ear picking device and a corn combine harvester. Background Art

[0002] In order to improve agricultural production efficiency and the continuous pursuit of crop harvesting quality, corn combine harvesters have replaced the early manual harvesting method. Among them, the corn combine harvester mainly pulls down the corn stalks at high speed, and uses the ear cutter table located at the front end of the vehicle body to pick the ears on the corn stalks through forced extrusion.

[0003] In related technologies, the ear cutter table of the corn combine harvester mainly includes a reel assembly and a stalk pulling roller. Its working principle is mainly to introduce the corn stalks into the gap between adjacent stalk pulling rollers through the reel assembly. The gap between the stalk pulling rollers is smaller than the diameter of the ears of the corn stalks, and there are roller knives on the stalk pulling rollers. Under the downward pulling force of the relatively rotating stalk pulling rollers, the ears on the corn stalks can be forcibly pulled down and separated from the corn stalks to achieve ear picking.

[0004] However, due to the different diameters of the stalks, when the large-diameter stalks enter the gap between the stalk pulling rollers, the gap between the stalk pulling rollers is enlarged as a whole, and then the small-diameter stalks that enter later are smaller than the gap between the stalk pulling rollers, resulting in missing the ears on some small-diameter stalks and increasing the ear dropping rate. Summary of the Invention

[0005] The embodiments of this application provide a corn ear picking device and a corn combine harvester to overcome the problem in the prior art that when large-diameter stalks enter the gap between the stalk pulling rollers, the gap between the stalk pulling rollers is enlarged as a whole, and then the small-diameter stalks that enter later are smaller than the gap between the stalk pulling rollers, resulting in missing the ears on some small-diameter stalks and increasing the ear dropping rate.

[0006] In a first aspect, the embodiments of this application provide a corn ear picking device, including: a frame; an ear picking mechanism, the ear picking mechanism includes at least a pair of stalk pulling rollers and an adjusting component connected to the stalk pulling rollers. There is a preset distance between the paired stalk pulling rollers; a driving mechanism, the driving mechanism has at least a pair of rotary joints, the rotary joints are respectively hinged to the stalk pulling rollers one by one, and the rotary joints drive the paired stalk pulling rollers to rotate, so as to separate the corn ears from the corn stalks; the stalk pulling rollers are configured to swing relatively with the rotary joints as the hinge points under the drive of the corn stalks, so as to adjust the distance between the paired stalk pulling rollers; the adjusting component is used to drive the paired stalk pulling rollers to move, so that the distance between the paired stalk pulling rollers returns to the preset distance.

[0007] In a possible implementation manner, the rotary joint includes a transmission shaft, a spherical sleeve sleeved on the end of the transmission shaft, and a transmission pin connected to the transmission shaft and protruding through the spherical sleeve. The end of the pulling roller has a ball groove, and the ball groove forms a ball hinge connection with the spherical sleeve. A jack is provided on the side wall of the ball groove, and the transmission pin is inserted into the jack.

[0008] In a possible implementation manner, the driving mechanism further includes the driving member, the driving member is connected to the transmission shaft through bevel gears, and the driving member is used to drive the transmission shaft to rotate circumferentially around itself and inwards.

[0009] In a possible implementation manner, the adjusting assembly includes a bearing seat, a connecting pin, a mounting seat, and a return spring. The bearing seat is installed at the end of the pulling roller away from the driving mechanism. One end of the connecting pin is hinged to the bearing seat, and the other end of the connecting pin is connected to the mounting seat. The mounting seat is fixed on the frame. The return spring is sleeved on the outer peripheral wall of the connecting pin between the mounting seat and the bearing seat, and the connecting pin moves relative to the mounting seat.

[0010] In a possible implementation manner, the pulling roller includes a guide cone, a cylinder body, and a transmission seat connected in sequence. The transmission seat is the ball groove. Helical protrusions are arranged circumferentially on the outer side of the guide cone. The helix directions of the helical protrusions on a pair of pulling rollers are opposite. A plurality of roller blades are fixedly arranged obliquely circumferentially on the outer side of the cylinder body.

[0011] In a possible implementation manner, the ear picking mechanism further includes a weeding knife. One end of the weeding knife is hinged to the pulling roller, and the other end of the weeding knife is hinged to the frame. There are intervals between both sides of the weeding knife and the pulling roller and the frame respectively.

[0012] In a possible implementation manner, it further includes a reel mechanism. The reel mechanism is arranged on the top of the frame. The reel mechanism includes a driving wheel, a driven wheel, a reel chain, and a tensioning member. The reel chain is sleeved on the driving wheel and the driven wheel. The tensioning member is connected to the driven wheel. Reel teeth are arranged along the circumferential side of the reel chain.

[0013] In a possible implementation manner, the driving mechanism further includes a driving joint. The driving joint is connected to the reel mechanism, and the driving mechanism is used to drive the reel chain to rotate in opposite directions.

[0014] In a possible implementation manner, it further includes at least one set of symmetrically arranged ear picking plates and at least one set of symmetrically arranged guiding plates. The ear picking plates are connected to the frame and cover above the pulling roller. The guiding plates are arranged at one end of the frame away from the driving mechanism.

[0015] In a second aspect, an embodiment of the present application provides a corn combine harvester, which includes a harvester body and the above-mentioned corn ear picking device provided on the harvester body.

[0016] An embodiment of the present application provides a corn ear picking device and a corn combine harvester. The pulling rollers of the corn ear picking device are connected to the frame through an adjusting assembly, and the end of the pulling roller is hinged to a rotary joint. Therefore, according to the different diameters of the corn stalks entering between the pulling rollers, under the extrusion drive of the corn stalks, the adjusting assembly can adjust the spacing between the paired pulling rollers, and under the hinged action, the pulling rollers can swing relatively while the position of the end remains fixed, so that the pulling rollers are in a "flare" shape, which can not only meet the entry of stalks with different growth conditions, but more importantly, the interval between the pulling rollers close to the rotary joint is always small, so as to pick the ears, reduce the ear dropping rate, and lower the remaining rate of the ears. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present application, and are used together with the description to explain the principles of the present application.

[0018] Figure 1 is a schematic structural diagram of the corn ear picking device provided by the present application;

[0019] Figure 2 is a schematic structural diagram of the corn ear picking device from another angle provided by the present application;

[0020] Figure 3 is a top view of the corn ear picking device provided by the present application;

[0021] Figure 4 is a schematic structural diagram of the drive mechanism of the corn ear picking device provided by the present application;

[0022] Figure 5 is a schematic structural diagram of the pulling roller of the corn ear picking device provided by the present application;

[0023] Figure 6 is a schematic structural diagram of the weeding knife of the corn ear picking device provided by the present application.

[0024] Description of the reference numerals:

[0025] 100 - frame;

[0026] 200 - ear picking mechanism; 210 - pulling roller; 211 - guide cone; 212 - cylinder; 213 - transmission seat; 214 - spiral protrusion; 215 - roller blade; 220 - adjusting assembly; 221 - bearing seat; 222 - connecting pin; 223 - mounting seat; 224 - return spring; 230 - weeding knife;

[0027] 300 - Driving mechanism; 310 - Rotary joint; 311 - Transmission shaft; 312 - Spherical sleeve; 313 - Transmission pin; 320 - Driving part; 330 - Driving joint;

[0028] 400 - Reaping mechanism; 410 - Driving wheel; 420 - Driven wheel; 430 - Reaping chain; 440 - Tensioning part; 450 - Reaping teeth;

[0029] 500 - Ear - picking board;

[0030] 600 - Guide plate.

[0031] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0032] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0033] The terms "first", "second", "third", etc. (if any) in the specification, claims and above - mentioned drawings of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order different from those illustrated or described here.

[0034] Secondly, it should be noted that in the description of the present application, the terms indicating directions or positional relationships such as "inner", "outer", "first direction", "second direction", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present application.

[0035] In addition, it should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] As shown in the background art, in the related art, the ear header of a corn combine harvester mainly includes a reel assembly and a pulling roller. Its working principle is mainly to introduce the corn stalks into the gap between adjacent pulling rollers through the reel assembly. The gap between the pulling rollers is smaller than the diameter of the corn stalks, and there are roller knives on the pulling rollers. Under the downward pulling force of the relatively rotating pulling rollers, the ears on the corn stalks can be forced to be pulled down and separated from the corn stalks to achieve ear picking.

[0037] However, due to the different diameters of the stalks, when the large-diameter stalks enter the gap between the pulling rollers, the overall gap between the pulling rollers is enlarged. As a result, the small-diameter stalks that enter later are smaller than the gap between the pulling rollers, thus missing the ears on some small-diameter stalks and increasing the ear loss rate.

[0038] In view of the above technical problems, the embodiments of the present application provide a corn ear picking device and a corn combine harvester. On the one hand, the corn ear picking device includes: a frame, an ear picking mechanism, and a driving mechanism. The ear picking mechanism includes at least a pair of pulling rollers and an adjusting assembly connected to the pulling rollers. There is a preset distance between the paired pulling rollers; the driving mechanism has at least a pair of rotary joints, and the rotary joints are respectively hinged to the pulling rollers. The rotary joints drive the paired pulling rollers to rotate, so as to separate the corn ears from the corn stalks; the pulling rollers are configured to swing relative to the hinge point of the rotary joints under the drive of the corn stalks, so as to adjust the distance between the paired pulling rollers; the adjusting assembly is used to drive the paired pulling rollers to move so that the distance between the paired pulling rollers returns to the preset distance. With such a setting, the pulling rollers are in a "flare" shape, which can not only meet the entry of stalks with different growth conditions, but more importantly, the interval between the pulling rollers close to the rotary joints is always small, so as to pick ears, reduce the ear loss rate, and reduce the remaining rate of ears. On the other hand, the corn combine harvester includes a harvester body and the above-provided corn ear picking device arranged on the harvester body.

[0039] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0040] Combined with Figures 1 to 6 As shown, on the one hand, an embodiment of the present application provides a corn ear picking device, including:

[0041] A frame 100.

[0042] An ear picking mechanism 200, the ear picking mechanism 200 includes at least a pair of stalk pulling rollers 210 and an adjusting assembly 220 connected to the stalk pulling rollers 210, and there is a preset distance between the paired stalk pulling rollers 210.

[0043] A driving mechanism 300, the driving mechanism 300 has at least a pair of rotary joints 310, the rotary joints 310 are respectively hinged to the stalk pulling rollers 210, and the rotary joints 310 drive the paired stalk pulling rollers (210) to rotate, so as to separate the corn ears from the corn stalks.

[0044] The stalk pulling rollers 210 are configured to swing relatively with the rotary joints 310 as the hinge points under the drive of the corn stalks, so as to adjust the distance between the paired stalk pulling rollers 210.

[0045] The adjusting assembly 220 is used to drive the paired stalk pulling rollers 210 to move, so that the distance between the paired stalk pulling rollers 210 returns to the preset distance.

[0046] Specifically, combined with Figures 1 to 6 As shown, there is a preset distance between the paired stalk pulling rollers 210. The corn stalks can be pulled down within this distance to achieve ear picking. And the paired stalk pulling rollers 210 are connected to the frame 100 through the adjusting assembly 220, so that the distance between the paired stalk pulling rollers 210 can be adjusted flexibly, which is convenient for corn stalks with larger diameters to enter the distance for ear picking operations, and avoids the increase of broken stalks caused by the stalk pulling rollers 210 cutting off the stalks. Among them, the ends of the paired stalk pulling rollers 210 are respectively hinged to the rotary joints 310. Therefore, according to the different diameters of the corn stalks entering between the stalk pulling rollers 210, under the extrusion of the corn stalks, the adjusting assembly 220 can adjust the distance between the adjacent stalk pulling rollers 210, and under the hinged action, while the stalk pulling rollers 210 can swing relatively, the positions of the ends remain fixed, so that the stalk pulling rollers 210 are in a "flare" shape, which can not only meet the entry of stalks with different growth trends, but more importantly, the interval between the stalk pulling rollers 210 close to the rotary joints 310 is always small, so as to pick the ears, reduce the ear dropping rate, and reduce the remaining rate of the ears.

[0047] Among them, in a possible implementation manner, combined with Figure 4 and Figure 5As shown in the figure, the rotary joint 310 includes a transmission shaft 311, a spherical sleeve 312 sleeved on the end of the transmission shaft 311, and a transmission pin 313 connected to the transmission shaft 311 and protruding through the spherical sleeve 312. The end of the stalk pulling roller 210 has a ball groove, and the ball groove and the spherical sleeve 312 form a ball hinge connection. A jack is provided on the side wall of the ball groove, and the transmission pin 313 is inserted into the jack.

[0048] Specifically, in combination with Figure 4 and Figure 5 As shown in the figure, the transmission pin 313 can be connected to the transmission shaft 311 and protrude from the spherical sleeve 312, so that the transmission pin 313 can be clamped with the jack on the ball groove at the end of the stalk pulling roller 210, thereby transmitting power to the stalk pulling roller 210 through the transmission pin 313 to drive the stalk pulling roller 210 to rotate self - rotatably. Among them, a stop block can be provided on the transmission pin 313, and the stop block is clamped with the jack to enhance the connection strength. And, the spherical sleeve 312 is sleeved on the end of the transmission shaft 311, and the spherical sleeve 312 is adapted to the ball groove at the end of the stalk pulling roller 210 to form a ball hinge connection, so that the stalk pulling roller 210 can swing with the rotary joint 310 as the hinge point under the action of the adjusting assembly 220 to form a "flare" shape, so that the interval between the stalk pulling rollers 210 close to the rotary joint 310 is always small, so as to remove the ear and reduce the ear - dropping rate.

[0049] Among them, in a possible implementation manner, as Figure 4 shown in the figure, the driving mechanism 300 further includes a driving member 320. The driving member 320 is connected to the transmission shaft 311 through bevel gears, and the driving member 320 is used to drive the transmission shaft 311 to rotate circumferentially around itself and inwardly towards each other.

[0050] It can be understood that the driving member 320 can provide power to drive the transmission shaft 311 to rotate self - rotatably, thereby driving the stalk pulling roller 210 to rotate self - rotatably. The driving member 320 can be connected to the transmission shaft 311 through bevel gears, so that when the stalk pulling roller 210 swings relatively driven by the adjusting assembly 220, the transmission shaft 311 can maintain its relative position unchanged. The driving member 320 can drive the adjacent transmission shafts 311 to rotate inwardly towards each other, thereby driving the stalk pulling rollers 210 to rotate inwardly towards each other, so as to pull down the corn stalks and achieve ear picking.

[0051] Of course, in other implementation manners, the driving member 320 can be a gearbox or a driving motor, etc., without specific limitation, as long as it can drive the transmission shaft 311 to rotate self - rotatably.

[0052] Among them, in a possible implementation manner, as Figure 1As shown in the figure, the adjusting assembly 220 includes a bearing seat 221, a connecting pin 222, a mounting seat 223 and a return spring 224. The bearing seat 221 is installed at the end of the stalk pulling roller 210 away from the driving mechanism 300. One end of the connecting pin 222 is hinged to the bearing seat 221, and the other end of the connecting pin 222 is connected to the mounting seat 223. The mounting seat 223 is fixed to the frame 100. The return spring 224 is sleeved on the outer peripheral wall of the connecting pin 222 between the mounting seat 223 and the bearing seat 221, and the connecting pin 222 moves relative to the mounting seat 223.

[0053] Specifically, as Figure 1 shown, when the diameter of the corn stalk is relatively large, when passing through the interval area (stalk pulling area) between the stalk pulling rollers 210, the connecting pin 222 moves relative to the mounting seat 223, driving the stalk pulling rollers 210 to move away from each other, and the return spring 224 is compressed to ensure that the corn stalk can enter smoothly; and the return spring 224 can synchronously return to its original length as the extrusion force decreases, that is, the stalk pulling rollers 210 are reset to the initial state, improving adaptability.

[0054] Among them, in a possible implementation manner, in combination with Figure 1 and Figure 5 shown, the stalk pulling roller 210 includes a guide cone 211, a cylinder 212 and a transmission seat 213 connected in sequence. The transmission seat 213 is a ball groove. A spiral protrusion 214 is arranged on the outer side of the guide cone 211 along the circumferential direction. The spiral protrusions 214 on a pair of stalk pulling rollers 210 have opposite helix directions. A plurality of roller blades 215 are fixedly arranged on the outer side of the cylinder 212 along the circumferential direction and are inclined.

[0055] Specifically, in combination with Figure 1 and Figure 5 shown, symmetric left and right helix directions of spiral protrusions 214 are arranged on the outside of the guide cones 211 at the front ends of a pair of stalk pulling rollers 210. During the downward rotation of the stalk pulling rollers 210, the spiral protrusions 214 have a backward (towards the direction of the rotary joint 310) extrusion and pushing effect on the corn stalks, so that the corn stalks can enter the stalk pulling area for ear picking operation; and a plurality of roller blades 215 can be arranged on the outer side of the cylinder 212 along the circumferential direction. The roller blades 215 are inclined, and the positions of the roller blades 215 belong to the stalk pulling area to pull down the corn stalks to realize ear picking.

[0056] In combination with Figure 4 and Figure 5 shown, the transmission seat 213 can be a ball groove. The spherical sleeve 312 of the rotary joint 310 is adapted to the ball groove to realize ball hinge connection, facilitating the relative swing of the stalk pulling roller 210 with the rotary joint 310 as the hinge point under the drive of the adjusting assembly 220. And a jack is provided on the side wall of the transmission seat 213, and the transmission pin 313 is inserted into the jack to realize transmission connection to drive the stalk pulling roller 210 to rotate self.

[0057] Of course, in other embodiments, spiral protrusions 214 may also be provided on the outer periphery of the cylinder 212 to pull down the corn stalks, reduce the breakage of the stalks, and thus reduce the impurity content. Therefore, there is no specific limitation on the outer periphery of the cylinder 212, as long as it can pull down the corn stalks and achieve the ear picking effect.

[0058] Among them, in a possible embodiment, in combination with Figure 1 and Figure 6 as shown, the ear picking mechanism 200 further includes a weeding knife 230. One end of the weeding knife 230 is hinged to the stem pulling roller 210, and the other end of the weeding knife 230 is hinged to the frame 100. There are intervals between both sides of the weeding knife 230 and the stem pulling roller 210 and the frame 100 respectively.

[0059] Specifically, as Figure 1 shown, both ends of the weeding knife 230 are respectively hinged to the stem pulling roller 210 and the frame 100. When the stem pulling roller 210 moves to both sides along the adjusting assembly 220 under the action of an external force, the weeding knife 230 can move synchronously. It can be understood that there will inevitably be weeds in the field. When the stem pulling roller 210 rotates and works, the weeding knife 230 is relatively fixed to the side of the stem pulling roller 210 and can cut the weeds on the side of the stem pulling roller 210 to prevent the weeds from winding around the stem pulling roller 210, thereby effectively reducing the failure rate of the corn ear picking device. Among them, in combination with Figure 1 and Figure 6 shown, the weeding knife 230 is strip-shaped and has an inclined surface on one side, and the inclined surface is adapted to the stem pulling roller 210, effectively ensuring the accuracy of cutting weeds. Of course, in other embodiments, the interval distance between the weeding knife 230 and the stem pulling roller 210 can be adjusted. When the stem pulling roller 210 works, the set distance between the weeding knife 230 and the stem pulling roller 210 can be adjusted to effectively cut the weeds and miscellaneous stalks.

[0060] Among them, in a possible embodiment, in combination with Figure 2 and Figure 3 shown, it further includes a reel mechanism 400. The reel mechanism 400 is arranged on the top of the frame 100. The reel mechanism 400 includes a driving wheel 410, a driven wheel 420, a reel chain 430 and a tensioning member 440. The reel chain 430 is sleeved on the driving wheel 410 and the driven wheel 420, and the tensioning member 440 is connected to the driven wheel 420. Reel teeth 450 are arranged along the circumferential side of the reel chain 430.

[0061] Specifically, in combination with Figure 2 and Figure 3As shown, the driving wheel 410 is connected to the driving joint 330 (to be described below), the driven wheel 420 is arranged on the frame 100, the driving wheel 410 and the driven wheel 420 cooperate through the reed chain 430, and the tensioning member 440 is connected to the driven wheel 420 to adjust the spacing between the driving wheel 410 and the driven wheel 420, so as to ensure that the reed chain 430 remains tensioned; and a shifting tooth 450 is arranged along the circumferential side of the reed chain 430, when the reed chain 430 rotates, the shifting tooth 450 can rotate synchronously, so as to guide the corn stalks into the stem pulling area between the stem pulling rollers 210. Among them, the reed chain 430 and the shifting tooth 450 can be rubber or metal parts, and there is no specific limitation, as long as they can guide the corn stalks to move backwards, enter the stem pulling area, and perform the ear picking operation.

[0062] Further, such as Figure 4 As shown, the driving mechanism 300 further includes a driving joint 330 , and the driving joint 330 is connected to the reel mechanism 400 , and the driving mechanism 300 is used to drive the reel chains 430 to rotate in opposite directions.

[0063] Specifically, Figure 4 As shown, the driving joint 330 can be connected to the driving member 320 in a transmission manner, and the driving member 320 can drive the driving joint 330 to rotate in the circumferential direction, and the driving wheel 410 of the reed-pulling mechanism 400 is connected to the driving joint in a one-to-one correspondence. Therefore, under the drive of the driving joint 330, the driving wheel 410 rotates, thereby driving the driven wheel 420 and the reed-pulling chain 430 sleeved on the periphery to rotate in the circumferential direction. Among them, the rotation directions of adjacent driving joints 330 are opposite, so the adjacent reed-pulling chains 430 rotate in opposite directions, and the pulling teeth 450 are staggered with each other, so as to gather and drive the corn stalks to move backward together.

[0064] Among them, in a possible implementation, combined with Figures 1 to 3 As shown, it also includes at least one group of symmetrically arranged ear picking plates 500 and at least one group of symmetrically arranged guide plates 600. The ear picking plates 500 are connected to the frame 100 and cover the stem pulling rollers 210. The guide plates 600 are arranged at one end of the frame 100 away from the driving mechanism 300.

[0065] Specific, combined Figures 1 to 3 As shown, a group of ear picking plates 500 are correspondingly arranged above a pair of stem pulling rollers 210, and the straw-pushing mechanism 400 is arranged above the ear picking plates 500. Under the guidance of the straw-pushing mechanism 400, the corn stalks can enter the interval area of the stem pulling rollers 210 (i.e., the stem pulling area), and the ear picking plates 500 cooperate with the stem pulling rollers 210. The stem pulling rollers 210 that rotate downward relatively pull the corn stalks downward, so that the ear picking plates 500 can block the corn ears, and then separate the corn ears from the corn stalks to achieve ear picking; and as shown Figure 1As shown, a guide plate 600 is provided at one end of the frame 100 away from the drive mechanism 300 (i.e., in front of the stalk pulling rollers 210). The guide plate 600 gradually approaches in the direction towards the stalk pulling rollers 210 and is in a V shape, so as to guide the corn stalks into the working area of the reel mechanism 400, and thus guide the corn stalks into the stalk pulling area between the stalk pulling rollers 210 for ear picking operation.

[0066] In a second aspect, an embodiment of the present application provides a corn combine harvester, including a harvester body and the above-provided corn ear picking device provided on the harvester body. Among them, multiple groups of the corn ear picking devices can be provided, and the corn ear picking devices are detachably connected to the combine harvester body, so as to flexibly adjust the number of corn ear picking devices according to the specific quantity of corn to improve the ear picking efficiency.

[0067] Finally, it should be noted that: those skilled in the art will easily think of other implementation schemes of the present invention after considering the specification and practicing the invention disclosed herein. The present invention aims to cover any variations, uses or adaptive changes of the present invention. These variations, uses or adaptive changes follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present invention. It is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A corn ear picking device, characterized in that, Comprising: A frame (100); A ear picking mechanism (200), the ear picking mechanism (200) includes at least a pair of stalk pulling rollers (210) and an adjusting assembly (220) connected to the stalk pulling rollers (210), and there is a preset distance between the paired stalk pulling rollers (210); A driving mechanism (300), the driving mechanism (300) has at least a pair of rotary joints (310), the rotary joints (310) are respectively and hingedly connected to the stalk pulling rollers (210), and the rotary joints (310) drive the paired stalk pulling rollers (210) to rotate, so as to separate the corn ear from the corn stalk; The stalk pulling roller (210) is configured to swing relatively with the rotary joint (310) as the hinge point under the drive of the corn stalk, so as to adjust the distance between the paired stalk pulling rollers (210); The adjusting assembly (220) is used to drive the paired stalk pulling rollers (210) to move, so that the distance between the paired stalk pulling rollers (210) returns to the preset distance.

2. The corn ear picking device according to claim 1, characterized in that, The rotary joint (310) includes a transmission shaft (311), a spherical sleeve (312) sleeved on the end of the transmission shaft (311), and a transmission pin (313) connected to the transmission shaft (311) and protruding through the spherical sleeve (312). The end of the stalk pulling roller (210) has a spherical groove, and the spherical groove forms a spherical hinge connection with the spherical sleeve (312). A jack is provided on the side wall of the spherical groove, and the transmission pin (313) is inserted into the jack.

3. The corn ear picking device according to claim 2, wherein, The driving mechanism (300) further includes the driving member (320), the driving member (320) is connected to the transmission shaft (311) through bevel gears, and the driving member (320) is used to drive the transmission shaft (311) to rotate circumferentially around itself and inwards towards each other.

4. The corn ear picking device according to claim 1, characterized in that, The adjusting assembly (220) includes a bearing seat (221), a connecting pin (222), a mounting seat (223) and a return spring (224). The bearing seat (221) is installed at the end of the stalk pulling roller (210) away from the driving mechanism (300). One end of the connecting pin (222) is hinged to the bearing seat (221), the other end of the connecting pin (222) is connected to the mounting seat (223), the mounting seat (223) is fixed on the frame (100), and the return spring (224) is sleeved on the outer peripheral wall of the connecting pin (222) between the mounting seat (223) and the bearing seat (221), and the connecting pin (222) moves relative to the mounting seat (223).

5. The corn ear picking device according to claim 2, wherein, The stalk pulling roller (210) includes a guide cone (211), a cylinder body (212) and a transmission seat (213) connected in sequence. The transmission seat (213) is the spherical groove. The outer side of the guide cone (211) is provided with spiral protrusions (214) along the circumference. The spiral protrusions (214) on a pair of stalk pulling rollers (210) have opposite helix directions. A plurality of roller blades (215) are fixedly arranged obliquely along the circumference on the outer side of the cylinder body (212).

6. The corn ear picking device according to any one of claims 1-5, characterized in that, The ear picking mechanism (200) further includes a weeding knife (230). One end of the weeding knife (230) is hinged to the stalk pulling roller (210), and the other end of the weeding knife (230) is hinged to the frame (100). There are intervals between both sides of the weeding knife (230) and the stalk pulling roller (210) and the frame (100) respectively.

7. The corn ear picking device according to any one of claims 1-5, characterized in that, It further includes a reel mechanism (400). The reel mechanism (400) is arranged at the top of the frame (100). The reel mechanism (400) includes a driving wheel (410), a driven wheel (420), a reel chain (430) and a tensioning member (440). The reel chain (430) is sleeved on the driving wheel (410) and the driven wheel (420). The tensioning member (440) is connected to the driven wheel (420). Picking teeth (450) are arranged along the circumferential side of the reel chain (430).

8. The corn ear picking device according to claim 7, wherein, The driving mechanism (300) further includes a driving joint (330). The driving joint (330) is connected to the reel mechanism (400). The driving mechanism (300) is used to drive the reel chain (430) to rotate in opposite directions.

9. The corn ear picking device according to claim 7, characterized in that, It further includes at least one set of symmetrically arranged ear picking plates (500) and at least one set of symmetrically arranged guide plates (600). The ear picking plates (500) are connected to the frame (100) and cover above the stalk pulling roller (210). The guide plates (600) are arranged at one end of the frame (100) away from the driving mechanism (300).

10. A corn combine harvester, characterized in that, It includes a harvester body and the corn ear picking device according to any one of claims 1-9 provided on the harvester body.

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