CN217088685U

CN217088685U - Ear picking mechanism capable of automatically adjusting distance between ear picking plates and header

Info

Publication number: CN217088685U
Application number: CN202220193468.7U
Authority: CN
Inventors: 李衡; 李侠; 杨香林; 张卜然; 裴颖
Original assignee: Hebei Yinghu Agricultural Machinery Manufacturing Co Ltd
Current assignee: Hebei Yinghu Agricultural Machinery Manufacturing Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-08-02
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses an ear picking mechanism capable of automatically adjusting the spacing between ear picking plates, which comprises a plurality of ear picking units and an ear picking plate combined adjusting mechanism; the ear picking unit comprises an ear picking bracket and an ear picking plate arranged on the upper end surface of the ear picking bracket; the ear picking plate combined adjusting mechanism comprises a telescopic mechanism, a linkage mechanism and a plurality of motion driving units, wherein the telescopic mechanism is arranged at the side end of the ear picking mechanism, the linkage mechanism transversely penetrates through the ear picking mechanism, and the number of the motion driving units is equal to that of the ear picking units; the telescopic mechanism is in transmission connection with the linkage mechanism; the linkage mechanism is in transmission connection with a plurality of motion driving units. The utility model provides a pluck ear of grain mechanism, but automatic control telescopic machanism drives link gear lateral motion, and then drives the initiative swing arm and use the rotary drum to rotate as the center, and two initiative swing arms are located the both sides of rotary drum respectively with the hookup location of two ear of grain boards to make two ear of grain boards be close to each other or keep away from relatively, finally realize adjusting the automatically regulated in clearance between a pair of ear of grain boards.

Description

Ear picking mechanism capable of automatically adjusting distance between ear picking plates and header

Technical Field

The utility model relates to a maize picker field especially relates to a but ear of grain mechanism and header of automatically regulated ear of grain board interval.

Background

A corn harvester is an agricultural machine for picking and collecting corn ears, which picks the ears on corn stalks by using an ear header at the front end of a vehicle body and conveys the picked corn ears to a large elevator. The ear picking mechanism of the corn ear header is often provided with an adjustable gap between ear picking rollers according to the actual working condition, namely the type of corn to be harvested, and correspondingly, the gap between a pair of ear picking plates also needs to be adjusted accordingly.

In the existing ear picking mechanism of the corn ear header, the clearance between a pair of ear picking plates is often manually adjusted, and once the clearance is adjusted, the header shield needs to be opened, so that time and labor are wasted; secondly, the adjustment of the clearance between the snapping plates needs to be stopped and the operation is stopped, and the dynamic adjustment can not be realized according to the real-time situation of the corn to be harvested.

Therefore, how to provide a snapping mechanism and a header capable of automatically adjusting the distance between snapping plates becomes one of the problems that needs to be solved at present.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model discloses a following technical scheme:

a snapping mechanism capable of automatically adjusting the spacing between snapping plates comprises a plurality of snapping units and a snapping plate combined adjusting mechanism;

the ear picking unit comprises an ear picking bracket and an ear picking plate arranged on the upper end surface of the ear picking bracket, and the ear picking plate can transversely slide relative to the upper end surface of the ear picking bracket;

the ear picking plate combined adjusting mechanism comprises a telescopic mechanism, a linkage mechanism and a plurality of motion driving units, wherein the telescopic mechanism is arranged at the side end of the ear picking mechanism, the linkage mechanism transversely penetrates through the ear picking mechanism, and the number of the motion driving units is equal to that of the ear picking units;

the telescopic mechanism is in transmission connection with the linkage mechanism to enable the linkage mechanism to move transversely; the linkage mechanism is in transmission connection with the plurality of motion driving units, so that the motion driving units drive the pair of ear picking plates to move oppositely.

Preferably, the ear picking plate comprises a left ear picking plate and a right ear picking plate;

the motion driving unit comprises a pair of rotating plates, a pair of rotating cylinders and a pair of driving swing arms; one end of each of the rotating plates is rotatably mounted on the linkage mechanism, and the other end of each of the rotating plates is fixedly sleeved on the corresponding rotating cylinder; the rotary drum is rotatably arranged on the snapping bracket; one end of each of the pair of active swing arms is fixedly arranged on the pair of rotary drums, and the other end of each of the pair of active swing arms is respectively arranged at the bottom ends of the left ear picking plate and the right ear picking plate;

the connecting positions of the pair of active swing arms and the left and right ear picking plates are respectively positioned at the front end and the rear end of the rotary drum.

Preferably, a vertical shaft is fixedly installed on the snapping support, and the rotating drum is rotatably connected with the vertical shaft in a sleeved mode.

Preferably, the ear picking plate combined adjusting mechanism further comprises a connecting arm, one end of the connecting arm is rotatably mounted on the telescopic mechanism, and the other end of the connecting arm is fixedly connected with the linkage mechanism.

Preferably, a drum connecting hole is formed in the driving swing arm, and the driving swing arm is fixedly connected to the drum through the drum connecting hole;

a first waist-shaped hole is formed in one end, opposite to the drum connecting hole, of the driving swing arm, a second waist-shaped hole is formed in the ear picking support, a round hole is formed in the ear picking plate, a first fastener penetrates through the round hole, the second waist-shaped hole and the first waist-shaped hole from top to bottom in sequence, and the diameter of the first fastener is matched with the round hole, the second waist-shaped hole and the first waist-shaped hole respectively;

the second waist-shaped hole and the first waist-shaped hole are arranged in a crossed mode in the length direction.

Preferably, the diameter of the first fastener is equal to that of the round hole, and the diameter of the first fastener is smaller than the transverse widths of the second waist-shaped hole and the first waist-shaped hole.

Preferably, the motion driving unit further comprises a pair of passive swing arms, one end of each passive swing arm is rotatably and fixedly mounted on the fixing shaft of the ear picking bracket, and the other end of each passive swing arm is respectively mounted at the bottom ends of the left ear picking plate and the right ear picking plate;

the connection positions of the pair of passive swing arms and the left and right ear picking plates are respectively positioned at the front end and the rear end of the fixed shaft, and the active swing arm and the passive swing arm on the same side are connected through a connecting component.

Preferably, the passive swing arm and the stripper plate are connected in the same manner as the active swing arm.

Preferably, the coupling member comprises a connecting rod and connecting rings mounted at two ends of the connecting rod, and the two ends of the connecting rod are respectively connected with the active swing arm and the passive swing arm through the connecting rings;

and the connecting points of the connecting rod and the active swing arm and the passive swing arm are positioned on the same side of the connecting hole.

Preferably, connecting columns are fixedly arranged on the driving swing arm and the driven swing arm, and the connecting rings are sleeved on the connecting columns.

Preferably, the ear picking plate is provided with a plurality of third waist-shaped holes, the ear picking bracket is provided with a plurality of second round holes,

the plurality of third waist-shaped holes are matched with the plurality of second round holes, and the third fasteners are in through connection with the third waist-shaped holes and the second round holes.

Preferably, a through hole is formed in the ear picking support, the linkage mechanism penetrates through the through hole, and the size of the through hole is matched with that of the linkage mechanism.

Preferably, the ear picking unit further comprises a gear box arranged at the rear end of the ear picking bracket;

the reel chain is arranged at the upper end of the ear picking support and is connected with the gearbox in a transmission way;

the ear picking double-roller is arranged at the lower end of the ear picking bracket and is connected to the front end of the gearbox in a transmission way through a universal spherical hinge.

Preferably, the number of the ear picking units is two, three, four, five, six, eight, ten or twelve.

The utility model also provides a header for reap the corn ear, including the auger, and install the foretell ear of grain mechanism of plucking of auger front end.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the utility model provides a pluck ear of grain mechanism drives link gear transverse motion through control system control telescopic machanism, drives the rotor plate and uses the rotary drum to rotate as the center, drives the rotary drum rotation, and then drives the initiative swing arm and use the rotary drum to rotate as the center, and the initiative swing arm direction of rotation is the same, because two initiative swing arms are located the both sides of rotary drum respectively with the hookup location of two ear of grain boards of plucking to make two ear of grain boards of plucking be close to each other or keep away from relatively, finally realize adjusting the automatically regulated in clearance between a pair of ear of plucking board.

The utility model provides a pluck ear of grain mechanism, passive swing arm use the fixed axle to swing as the center, and when the initiative swing arm rotated, drive passive swing arm and rotate in step, and then passive swing arm drives and plucks the synchronous lateral sliding of ear of grain board front and back end for it is more balanced to pluck ear of grain board lateral sliding.

Drawings

FIG. 1 is an overall structure view of the header of the present invention;

fig. 2 is an overall structure diagram of the overlooking view angle of the cutting table of the utility model;

FIG. 3 is a side view of the ear picking unit of the utility model;

FIG. 4 is an overall structure diagram of the ear picking plate combined adjusting mechanism of the present invention;

FIG. 5 is a first structural view of the motion driving unit of the present invention;

FIG. 6 is a schematic diagram of the active (passive) swing arm of the present invention;

FIG. 7 is an exploded view of the connection between the swing arm and the ear picking bracket and the ear picking plate of the present invention;

FIG. 8 is a second structural view of the motion driving unit of the present invention;

FIG. 9 is a side view and a partial enlarged view of the ear picking unit of the present invention;

FIG. 10 is a structural diagram of the ear picking plate combined adjusting mechanism of the utility model;

fig. 11 is an exploded view of the ear picking unit of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figure 1, the header is used for harvesting corn ears and comprises an auger 10 and an ear picking mechanism which is arranged at the front end of the auger 10 and can automatically adjust the distance between ear picking plates.

Further, the ear picking mechanism comprises a plurality of ear picking units 1, specifically, in this embodiment, the number of the ear picking units 1 is four, and the ear picking units are used for four-row harvesting, as another embodiment, the number of the ear picking units 1 may also be two, three, five, six, eight, ten or twelve, and the like, and a person skilled in the art can select the specific number of the ear picking units 1 according to actual requirements.

Further, as shown in fig. 1-2, the ear picking unit 1 comprises an ear picking support 20,

a gear box 21 arranged at the rear end of the ear picking bracket 20;

the reel chain 22 is arranged at the upper end of the ear picking support 20, and the reel chain 22 is in transmission connection with the gearbox 21;

the ear picking double-roller 23 is arranged at the lower end of the ear picking bracket 20, the ear picking double-roller 23 is connected to the front end of the gearbox 21 through a universal spherical hinge in a transmission way, and the ear picking double-roller 23 is connected with the gearbox 21 through the universal spherical hinge in order to adjust the gap between the ear picking double-roller 23 according to the actual working condition, namely the type of corn to be harvested;

the ear picking plate 24 is arranged on the upper end surface of the ear picking support 20, and the ear picking plate 24 can slide relative to the upper end surface of the ear picking support 20, so that the gap between the pair of ear picking plates 24 can be adjusted according to the actual working condition, namely the type of corn to be harvested.

Further, as shown in fig. 2 and 10, the ear picking mechanism further includes an ear picking plate combined adjusting mechanism 3, which includes a telescopic mechanism 31, a linkage mechanism 32 and a plurality of motion driving units 30, wherein the telescopic mechanism 31 is disposed at a side end of the ear picking mechanism, in this embodiment, the telescopic mechanism 31 is disposed at a left side end of the ear picking mechanism, and as another embodiment, the telescopic mechanism 31 may also be disposed at a right side end of the ear picking mechanism; the linkage mechanism 32 transversely penetrates through the ear picking mechanism, and the number of the motion driving units 30 is equal to that of the ear picking units 1;

the telescopic mechanism 31 is in transmission connection with the linkage mechanism 32 to move the telescopic mechanism transversely, that is, in the left-right direction, and the linkage mechanism 32 is in transmission connection with the plurality of motion driving units 30 to make the motion driving units 30 drive the pair of ear picking plates 24 to move towards each other, that is, to approach to or move away from each other. Preferably, the telescopic mechanism 31 can be selected to be a hydraulic rod or an electric push rod, and the extension or contraction of the hydraulic rod or the electric push rod is adjusted by the control unit.

Further, as shown in fig. 3, a through hole 201 is formed in the snapping support 20, the linkage 32 penetrates through the through hole 201, and the size of the through hole 201 is matched with the size of the linkage 32, so that the through hole 201 does not limit the movement of the linkage 32.

Further, as shown in fig. 4-5 and 10, the ear picking plates 24 include a left ear picking plate 241 and a right ear picking plate 242, for the convenience of distinguishing, the left side of each ear picking unit 1 is the left ear picking plate 241, and the right side of each ear picking unit 1 is the right ear picking plate 242;

the motion driving unit 30 includes a pair of rotating plates 301, a pair of drums 302, and a pair of active swing arms 303; one end of the pair of rotating plates 301 is rotatably mounted on the linkage mechanism 32, and the other end is fixedly sleeved on the pair of drums 302; the drum 302 is rotatably mounted on the snapping support 20; one end of the pair of active swing arms 303 is fixedly mounted on the pair of drums 302, and the other end is mounted on the bottom ends of the left ear picking plate 241 and the right ear picking plate 242 respectively;

the connecting position of the left active swing arm 303 and the left ear picking plate 241 is located at the front end of the drum 302, the connecting position of the right active swing arm 303 and the right ear picking plate 242 is located at the rear end of the drum 302, or the connecting position of the left active swing arm 303 and the left ear picking plate 241 is located at the rear end of the drum 302, and the connecting position of the right active swing arm 303 and the right ear picking plate 242 is located at the front end of the drum 302. Through the above arrangement, when the telescopic mechanism 31 drives the linkage mechanism 32 to move transversely, the rotating plate 301 is driven to rotate by taking the rotary drum 302 as the center, the rotary drum 302 is driven to rotate, the driving swing arm 303 is driven to rotate by taking the rotary drum 302 as the center, the rotation direction of the driving swing arm 303 is the same, and the connecting positions of the two driving swing arms 303 and the two ear picking plates 24 are respectively located on two sides of the rotary drum 302, so that the two ear picking plates 24 are close to or relatively far away from each other, and finally, the gap between the pair of ear picking plates 24 is adjusted.

Further, a vertical shaft is fixedly mounted on the snapping support 20, and the rotating drum 302 is rotatably connected with the vertical shaft in a sleeved mode.

Further, as shown in fig. 4-5, the ear picking plate joint adjusting mechanism 3 further includes a connecting arm 33, wherein one end of the connecting arm 33 is rotatably mounted on the telescoping mechanism 31, and the other end is fixedly mounted on the rotating plate 301. With this arrangement, when the telescopic mechanism 31 is telescopic, the connecting arm 33 drives the rotating plate 301 to move, and further drives the linkage mechanism 32 to move transversely. Preferably, as an embodiment, the retractable mechanism 31 is arranged at the left end of the snapping mechanism, and the end of the connecting arm 33 is fixedly arranged on the leftmost rotating plate 301, or, as another embodiment, the retractable mechanism 31 can also be arranged at the right end of the snapping mechanism, and the end of the connecting arm 33 is fixedly arranged on the rightmost rotating plate 301. It is also possible to implement the connection arm 33 with its end fixedly mounted on the linkage 32.

Further, referring to fig. 6, a drum connecting hole 3031 is formed in the driving swing arm 303, and the driving swing arm 303 is fixedly sleeved on the drum 302 through the drum connecting hole 3031.

Further, referring to fig. 6-7 in detail, a first waist-shaped hole 3032 is formed in one end of the driving swing arm 303 opposite to the drum connecting hole 3031, a second waist-shaped hole 202 is formed in the ear picking support 20, a circular hole 243 is formed in the ear picking plate 24, the first fastening member 4 sequentially penetrates through the circular hole 243, the second waist-shaped hole 202 and the first waist-shaped hole 3032 from top to bottom, and the diameter of the first fastening member 4 is respectively matched with the circular hole 243, the second waist-shaped hole 202 and the first waist-shaped hole 3032;

wherein the length directions of the second waist-shaped hole 202 and the first waist-shaped hole 3032 are substantially perpendicular or intersected. With the above arrangement, the first fastener 4 can move lengthwise within the second slotted hole 202 and the first slotted hole 3032, such that the rotational movement of the active swing arm 303 can be translated into lateral sliding movement of the picker plate 241.

Further, the diameter of the first fastening member 4 is equal to the diameter of the circular hole 243, and the diameter of the first fastening member 4 is smaller than the transverse widths of the second waist-shaped hole 202 and the first waist-shaped hole 3032.

Further, the first fastening member 4 includes a long bolt 41 and a nut barrel 42.

Further, with reference to fig. 8-10 in detail, the motion driving unit 30 further includes a pair of passive swing arms 304, one end of each passive swing arm 304 is rotatably and fixedly mounted on the ear picking bracket 20, and the other end is mounted on the bottom ends of the left ear picking plate 241 and the right ear picking plate 242 respectively; preferably, the snapping support 20 is provided with a fixed shaft 203, and the passive swing arm 304 is rotatably mounted on the fixed shaft 203; the connecting position of the left passive swing arm 304 and the left ear picking plate 241 is positioned at the front end of the fixed shaft 203, the connecting position of the right passive swing arm 304 and the right ear picking plate 242 is positioned at the rear end of the fixed shaft 203, or the connecting position of the left passive swing arm 304 and the left ear picking plate 241 is positioned at the rear end of the fixed shaft 203, and the connecting position of the right passive swing arm 304 and the right ear picking plate 242 is positioned at the front end of the fixed shaft 203;

wherein said active swing arm 303 and passive swing arm 304 on the same side are connected by a link member 305. Through the arrangement, the driven swing arm 304 swings around the fixed shaft 203, and when the driving swing arm 303 rotates, the driven swing arm 304 is driven to synchronously rotate, so that the driven swing arm 304 drives the front end and the rear end of the ear picking plate to synchronously and transversely slide, and the ear picking plate transversely slides more balance.

Further, referring to fig. 6, a fixed shaft connecting hole 3031 is formed in the passive swing arm 304, and the passive swing arm 304 is sleeved on the fixed shaft 203 through the connecting hole 3031.

Further, the connection mode of the passive swing arm 304 and the ear picking plate 24 is the same as that of the active swing arm 303, that is, a first waist-shaped hole 3032 is formed in one end of the passive swing arm 304 opposite to the fixed shaft connection hole 3031, a second waist-shaped hole 202 is formed in the ear picking support 20, a circular hole 243 is formed in the ear picking plate 24, a second fastening member 5 sequentially penetrates through the circular hole 243, the second waist-shaped hole 202 and the first waist-shaped hole 3032 from top to bottom, and the diameter of the second fastening member 5 is respectively matched with the circular hole 243, the second waist-shaped hole 202 and the first waist-shaped hole 3032;

wherein the length directions of the second waist-shaped hole 202 and the first waist-shaped hole 3032 are substantially perpendicular or intersected. With the above arrangement, the second fastener 5 can move lengthwise within the second slotted hole 202 and the first slotted hole 3032, such that the swinging motion of the passive swing arm 304 can be translated into a lateral sliding motion of the deck plate 241.

Further, the diameter of the second fastening member 5 is equal to the diameter of the circular hole 243, and the diameter of the second fastening member 5 is smaller than the transverse widths of the second waist-shaped hole 202 and the first waist-shaped hole 3032.

Further, as shown in fig. 8 and 10, the coupling member 305 includes a connecting rod 3051 and a connecting ring 3052 mounted at both ends of the connecting rod 3051, and both ends of the connecting rod 3051 are respectively connected to the active swing arm 303 and the passive swing arm 304 through the connecting ring 3052;

wherein, the connection point of the connecting rod 3051 and the active swing arm 303 and the passive swing arm 304 are both located on the same side of the connecting hole 3031.

Further, with reference to fig. 6 and 8, a connection column 3033 is fixedly disposed on each of the active swing arm 303 and the passive swing arm 304, and the connection ring 3052 is sleeved on the connection column 3033.

Further, as shown in fig. 11, in order to stabilize the sliding of the ear picking plate 24 on the ear picking support 20 and to limit the freedom of the ear picking plate 24 except for the lateral sliding, a plurality of third waist-shaped holes 244 are provided on the ear picking plate 24, a plurality of second round holes 204 are provided on the ear picking support 20,

the third waist-shaped holes 244 are matched with the second round holes 204, and the third fastening piece 6 penetrates through the third waist-shaped holes 244 and the second round holes 204.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. A snapping mechanism capable of automatically adjusting the spacing between snapping plates comprises a plurality of snapping units and a snapping plate combined adjusting mechanism;

the device is characterized in that the telescopic mechanism is in transmission connection with a linkage mechanism to enable the linkage mechanism to move transversely; the linkage mechanism is in transmission connection with the plurality of motion driving units, so that the motion driving units drive the pair of ear picking plates to move oppositely.

2. The snapping mechanism of claim 1, wherein: the ear picking plate comprises a left ear picking plate and a right ear picking plate;

3. The snapping mechanism of claim 2, wherein: the ear picking support is fixedly provided with a vertical shaft, and the rotary drum is rotatably connected with the vertical shaft in a sleeved mode.

4. The snapping mechanism of claim 1, wherein: the ear picking plate combined adjusting mechanism further comprises a connecting arm, one end of the connecting arm is rotatably arranged on the telescopic mechanism, and the other end of the connecting arm is fixedly connected with the linkage mechanism.

5. The snapping mechanism of claim 2, wherein: the driving swing arm is provided with a rotary drum connecting hole and fixedly sleeved on the rotary drum through the rotary drum connecting hole;

6. The snapping mechanism of claim 5, wherein: the diameter of the first fastener is equal to that of the round hole, and the diameter of the first fastener is smaller than the transverse widths of the second waist-shaped hole and the first waist-shaped hole.

7. The snapping mechanism of claim 5, wherein: the motion driving unit further comprises a pair of driven swing arms, one ends of the driven swing arms are rotatably and fixedly arranged on a fixing shaft of the ear picking support, and the other ends of the driven swing arms are respectively arranged at the bottom ends of the left ear picking plate and the right ear picking plate;

8. The snapping mechanism of claim 7, wherein: the passive swing arm and the ear picking plate are connected in the same way as the active swing arm.

9. The snapping mechanism of claim 7, wherein: the connecting component comprises a connecting rod and connecting rings arranged at two ends of the connecting rod, and the two ends of the connecting rod are respectively connected with the active swing arm and the passive swing arm through the connecting rings;

10. The snapping mechanism of claim 9, wherein: connecting columns are fixedly arranged on the driving swing arm and the driven swing arm, and the connecting rings are sleeved on the connecting columns.

11. The snapping mechanism of claim 2, wherein: a plurality of third waist-shaped holes are arranged on the ear picking plate, a plurality of second round holes are arranged on the ear picking bracket,

12. The snapping mechanism of claim 2, wherein: the ear picking support is provided with a through hole, the linkage mechanism penetrates through the through hole, and the size of the through hole is matched with that of the linkage mechanism.

13. A snapping mechanism according to any one of claims 1 to 12, wherein: the ear picking unit also comprises a gear box arranged at the rear end of the ear picking bracket;

14. The snapping mechanism of claim 13, wherein: the number of the ear picking units is two, three, four, five, six, eight, ten or twelve.

15. A header for harvesting corn ears, comprising an auger and an ear picking mechanism according to any one of claims 1 to 14 mounted at the front end of the auger.