Flexible header for corn harvester

Abstract

The invention relates to the technical field of intelligent agricultural machinery, in particular to a flexible header for a corn harvester. Comprising a delivery device arranged on a machine frame and a cutter arranged on the machine frame, the machine frame is rotatably connected with two power gears, the power gears are slidably connected with an ear picking roller, the ear picking roller is slidably and rotatably connected with the machine frame, and the ear picking roller is provided with an ear picking plate; the snapping roller is rotatably connected with a rotating shaft, the rotating shaft is rotatably connected with a rotating ring, the rotating shaft is fixedly connected with a first extrusion block, and the snapping roller is fixedly connected with a second extrusion block. The second extrusion block is guided through the first extrusion block, when the snapping rollers need to be cleaned, the snapping rollers rotate reversely and move in a reciprocating mode, straw fibers adhering to the snapping rollers are rubbed off, the influence of adhesion of the straw fibers on the distance between the two snapping rollers is reduced, the snapping roller cleaning efficiency is improved, and the cleaning effect of the snapping rollers is improved. The separation efficiency is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent agricultural machinery, and particularly relates to a flexible cutter bar for a corn harvester. Background Art

[0002] As an important device in intelligent agricultural power machinery, the core function of a corn harvester is to efficiently separate and collect corn ears and straw. A flexible cutter bar is a key device for a corn harvester, and its core feature is to adapt to complex field environments and improve operation efficiency through dynamic adjustment or elastic buffering. Existing corn cutter bars are provided with several groups of ear pulling rollers. By the relative rotation of two ear pulling rollers in the same group, the straw is pulled downward, and the ears are isolated above the conveyor belt, so that the ears are separated and conveyed to the collection device.

[0003] In actual operation, the distance between the two ear pulling rollers is fixed. The ear pulling rollers are prone to adhering to impurities such as straw fibers during operation. Once straw fibers adhere between the two ear pulling rollers and cause the distance between the two ear pulling rollers to become smaller, it is necessary to reverse the two ear pulling rollers to remove the straw fibers between the two ear pulling rollers, and finally clean the ear pulling rollers manually.

[0004] However, the straw fibers contain moisture, which will cause the straw fibers to be squeezed and adhere to the ear pulling rollers. Simple reversal is difficult to make the straw fibers adhering to the ear pulling rollers fall off, and even cause the straw fibers to wind around the two ear pulling rollers, resulting in blockage between the two ear pulling rollers, preventing the straw from entering between the two ear pulling rollers, and affecting the separation efficiency of the flexible cutter bar. Summary of the Invention

[0005] In order to overcome the disadvantages pointed out in the above background art, the present invention provides a flexible cutter bar for a corn harvester.

[0006] The technical implementation scheme of the present invention is: a flexible cutter bar for a corn harvester, including a conveyor disposed on a frame, and a cutter disposed on the frame. The frame is rotatably connected with two power gears symmetrically distributed and meshing with each other. The power gears are slidably connected with ear pulling rollers. The ear pulling rollers are slidably and rotatably connected with the frame. The ear pulling rollers are provided with a plurality of ear pulling plates circumferentially distributed;

[0007] The ear pulling roller is rotatably connected with a rotating shaft. The rotating shaft is rotatably connected with a rotating ring. A first elastic member is fixedly connected between the ear pulling roller and the rotating ring. The rotating shaft is fixedly connected with a plurality of first pressing blocks circumferentially distributed. A plurality of second pressing blocks circumferentially distributed are fixedly connected to the ear pulling roller at a position close to the rotating shaft. The first pressing blocks are used to press all the second pressing blocks in the adjacent ear pulling roller, so as to move the second pressing blocks.

[0008] Further explanation: A one-way bearing is provided on the rotating shaft, and both the rotating shaft and the one-way bearing are rotatably connected to the frame.

[0009] Further explanation: All the first pressing blocks on the same rotating shaft form a group, and all the second pressing blocks on the same ear picking roller form a group. The two groups of first pressing blocks are asymmetrically distributed, and the two groups of second pressing blocks are asymmetrically distributed.

[0010] Further explanation: The frame is rotatably connected with a telescopic housing. The telescopic part of the telescopic housing is rotatably connected with a connecting ring fixedly connected to the adjacent ear picking roller. The ear picking plate is rotatably connected to the adjacent connecting ring and is rotatably connected to the adjacent ear picking roller.

[0011] Further explanation: The ear picking roller is fixedly connected with flexible strips that are circumferentially distributed and have the same number as the ear picking plates thereon. The flexible strips are located between the adjacent ear picking plates and the adjacent ear picking roller, and the flexible strips are in contact with the adjacent ear picking plates.

[0012] Further explanation: A number of circumferentially distributed limiting blocks are slidably connected to the telescopic part of the telescopic housing. A second elastic member is fixedly connected between the limiting block and the telescopic part of the adjacent telescopic housing. The ear picking roller is provided with a number of circumferentially distributed limiting parts, and the limiting block is used to press all the limiting parts in the adjacent ear picking roller.

[0013] Further explanation: The contact surfaces between the fixed part of the telescopic housing and the frame are all friction surfaces. The frictional resistance suffered by the fixed part of the telescopic housing during rotation is X, and the resistance suffered by any limiting block when the limiting part presses it is Y, and X > Y.

[0014] Further explanation: The telescopic part of the telescopic housing is fixedly connected with a toothed ring with missing teeth. The ear picking plate is fixedly connected with a rotating gear located inside the telescopic part of the telescopic housing. The toothed ring with missing teeth is used to drive the rotating gear, and a torsion spring is fixedly connected between the ear picking plate and the adjacent connecting ring.

[0015] Further explanation: The cutter includes a power frame, which is installed on the lower side of the frame. The power frame is slidably connected with a sliding frame. A third elastic member is fixedly connected between the power frame and the sliding frame. The sliding frame is fixedly connected with a number of circumferentially distributed cutters. The sliding frame is provided with a number of circumferentially distributed protection parts that are the same in number as the cutters, and the protection parts are located below the adjacent cutters.

[0016] Further explanation: The width of the protection part is greater than the width of the cutter.

[0017] The present invention has the following advantages: The present invention guides the second extrusion block through the first extrusion block. When it is necessary to clean the ear picking roller, the ear picking roller is reversed and reciprocated to rub off the straw fibers adhered to the ear picking roller, so as to reduce the influence of the adhesion of straw fibers on the distance between the two ear picking rollers, thereby improving the cleaning efficiency of the ear picking roller, and further ensuring the separation efficiency. Moreover, the two ear picking rollers are relatively misaligned during the movement, making the straw fibers stuck between the two ear picking rollers easier to fall off, reducing the probability of straw fibers winding around the ear picking roller during the reverse rotation. At the same time, during the cleaning process of the ear picking roller, all the ear picking plates on the ear picking roller reciprocally flip. Through the reciprocating swing of the two ear picking plates, the fibers adhered to the ear picking plates are loosened. And after the ear picking plates are flipped, the distance for the straw to pass between the two ear picking rollers increases, enabling the straw to pass through between the two ear picking rollers more smoothly, reducing the probability of the straw getting stuck between the two ear picking rollers, and thus improving the cleaning efficiency of the two ear picking rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a three-dimensional structural sectional view of the frame of the present invention;

[0020] Figure 3 is a three-dimensional structural schematic diagram of the ear picking roller of the present invention;

[0021] Figure 4 is a three-dimensional structural schematic diagram of the first extrusion block and the second extrusion block of the present invention;

[0022] Figure 5 is a schematic diagram of the positional relationship between the first extrusion block and the second extrusion block of the present invention;

[0023] Figure 6 is an exploded three-dimensional structural view of the power gear and the telescopic housing of the present invention;

[0024] Figure 7 is a three-dimensional structural schematic diagram of the limit block and the limit portion of the present invention;

[0025] Figure 8 is a three-dimensional structural schematic diagram of the ear picking plate and the flexible strip of the present invention;

[0026] Figure 9 is a three-dimensional structural schematic diagram of the cutter and the protection portion of the present invention.

[0027] The markings of each component in the attached drawings are as follows: 1: frame, 2: feeder, 3: cutter, 4: power gear, 5: ear stripper roller, 6: ear stripper plate, 7: rotating shaft, 701: rotating ring, 8: first extrusion block, 9: second extrusion block, 10: one-way bearing, 11: telescopic housing, 1101: connecting ring, 12: flexible strip, 13: limiting block, 14: limiting portion, 15: toothless ring, 16: rotating gear, 17: power frame, 18: sliding frame, 19: cutter, 20: protection portion. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below.

[0029] Embodiment 1

[0030] Disclosed in this embodiment is a flexible cutter bar for a corn harvester, which is used to separate straw and ears during corn harvesting.

[0031] As Figures 1 - 5 shown, it includes a feeder 2 arranged on the frame 1. The corn harvester is not shown in the figure. The corn harvester is provided with a control terminal not shown in the figure. The feeder 2 is electrically connected to the control terminal. The feeder 2 is composed of two groups of conveyor belts symmetrically distributed front and back. The distance between the two groups of conveyor belts is not enough for the ears to pass through. And a cutter 3 arranged on the frame 1. The cutter 3 is used to cut off the corn straw. The frame 1 is rotatably connected with two power gears 4 symmetrically distributed front and back and meshing with each other. A power component not shown in the figure is arranged in the frame 1. The power component is electrically connected to the control terminal. The power component is used to drive one of the power gears 4 to rotate, so that the two power gears 4 rotate. The power gear 4 is slidably connected with an ear stripper roller 5. The ear stripper roller 5 is slidably and rotatably connected to the frame 1. After the corn straw enters between the two ear stripper rollers 5 and between the two groups of conveyor belts, Figure 1The left view is the rotation reference. The front side ear picker roller 5 rotates counterclockwise, and the rear side ear picker roller 5 rotates clockwise. The two ear picker rollers 5 drag the straw downwards. The ear is blocked above the two conveyor belts. The two conveyor belts of the deliverer 2 deliver the ear to the right. A guiding part is arranged on the left side of the ear picker roller 5. The guiding part is frustum-shaped and its diameter gradually decreases from right to left, and is used to guide the straw between the two ear picker rollers 5. The ear picker roller 5 is provided with a plurality of ear picking plates 6 distributed circumferentially. In this embodiment, the ear picking plate 6 is fixedly connected to the adjacent ear picker roller 5. Only one group of the flexible cutter bar is shown in the figure. In actual use, a plurality of such devices need to be arranged in an array on the corn harvester for use; the ear picker roller 5 is rotatably connected to a rotating shaft 7, the rotating shaft 7 is rotatably connected to a rotating ring 701, and a first elastic member is fixedly connected between the ear picker roller 5 and the rotating ring 701. The first elastic member is a tension spring. The rotating shaft 7 is fixedly connected with a plurality of first pressing blocks 8 distributed circumferentially. A plurality of second pressing blocks 9 distributed circumferentially are fixedly connected to the position of the ear picker roller 5 close to the rotating shaft 7. The left part of the first pressing block 8 is provided with a flat surface and an inclined surface, and the right part of the second pressing block 9 is also provided with a flat surface and an inclined surface. The first pressing block 8 is used to press all the second pressing blocks 9 in the adjacent ear picker roller 5 to move the second pressing blocks 9, so as to Figure 1 With the left view as the rotation reference, when the front side ear picker roller 5 rotates counterclockwise, the ear picker roller 5 drives all the second pressing blocks 9 thereon to rotate. The flat surface of the second pressing block 9 presses the flat surface of the adjacent first pressing block 8, causing the rotating shaft 7 to rotate counterclockwise. When the front side ear picker roller 5 rotates clockwise, the ear picker roller 5 drives all the second pressing blocks 9 thereon to rotate. The inclined surface of the second pressing block 9 presses the inclined surface of the adjacent first pressing block 8, causing the second pressing block 9 to move to the left. The first elastic member between the ear picker roller 5 and the rotating ring 701 is stretched. After the second pressing block 9 loses contact with the adjacent first pressing block 8, the first elastic member between the ear picker roller 5 and the rotating ring 701 resets, causing the ear picker roller 5 to move to the right. The axes of the ear picker roller 5, the adjacent rotating shaft 7, and the adjacent rotating ring 701 are collinear.

[0032] As Figure 4 shown, the rotating shaft 7 is provided with a one-way bearing 10. The rotating shaft 7 and the one-way bearing 10 are both rotatably connected to the frame 1, so as to Figure 1 With the left view as the rotation reference, when the front side ear picker roller 5 rotates counterclockwise, the rotating shaft 7 rotates. When the front side ear picker roller 5 rotates clockwise, the rotating shaft 7 does not rotate.

[0033] When cleaning the surface of the ear picker roller 5, the two ear picker rollers 5 rotate in reverse and drive all the second extrusion blocks 9 thereon to rotate. The inclined surfaces of the second extrusion blocks 9 sequentially extrude all the adjacent first extrusion blocks 8, causing the ear picker roller 5 to move reciprocally left and right. All the first extrusion blocks 8 on the same rotating shaft 7 are grouped together, and all the second extrusion blocks 9 on the same ear picker roller 5 are grouped together. The two groups of first extrusion blocks 8 are asymmetrically distributed, and the two groups of second extrusion blocks 9 are asymmetrically distributed, causing the two ear picker rollers 5 to be relatively displaced during the left and right movement, rubbing off the straw fibers adhering to the ear picker roller 5 to enhance the cleaning effect of the ear picker roller 5.

[0034] The specific working process is as follows:

[0035] When the operator needs to use this device to harvest corn, several such devices are arranged in an array on the corn harvester for use. Then, the operator turns on the power component of the frame 1 through the control terminal. The power component of the frame 1 drives the two power gears 4 to rotate, and the power gears 4 drive the ear picker rollers 5 to rotate. At the same time, the corn harvester drives this device to move forward to the left. The corn straw enters between the two ear picker rollers 5 and between the two groups of conveyor belts of the feeder 2 from left to right. At this time, the front ear picker roller 5 rotates counterclockwise, and the rear ear picker roller 5 rotates clockwise. The ear picker roller 5 drives the adjacent ear picking plates 6 to rotate. The two ear picker rollers 5 respectively drag the straw downward through several ear picking plates 6 thereon. Along with the forward movement of this device to the left, the frame 1 drives the cutter 3 to move to the left, and the cutter 3 cuts off the corn straw. The ear is blocked above the two groups of conveyor belts, separating the ear and the straw. The two groups of conveyor belts of the feeder 2 deliver the ear to the right to collect the ear.

[0036] During the rotation of the ear picker roller 5, taking the front ear picker roller 5 as an example, the front ear picker roller 5 rotates counterclockwise, and the front ear picker roller 5 drives all the second extrusion blocks 9 thereon to rotate counterclockwise. The flat surface of the second extrusion block 9 extrudes the flat surface of the first extrusion block 8, causing the first extrusion block 8 to drive the rotating shaft 7 to rotate counterclockwise. During the counterclockwise rotation of the ear picker roller 5, the ear picker roller 5 drives the rotating ring 701 to rotate through the first elastic member.

[0037] When a large amount of straw fibers adhere to the ear picker roller 5 and the ear picker roller 5 needs to be cleaned, the operator uses the control terminal to make the power component of the frame 1 drive the two power gears 4 to rotate in the reverse direction, so that the power gears 4 drive the ear picker roller 5 to rotate in the reverse direction. The front ear picker roller 5 rotates clockwise, and the rear ear picker roller 5 rotates counterclockwise, pushing the straw stuck between the two ear picker rollers 5 upward. Taking the front ear picker roller 5 rotating clockwise as an example, the front ear picker roller 5 rotates and drives all the second extrusion blocks 9 thereon to rotate clockwise. The inclined surface of the second extrusion block 9 extrudes the inclined surface of the first extrusion block 8. At this time, the rotating shaft 7 does not rotate, and the second extrusion block 9 will reciprocally move along the inclined surfaces of all adjacent first extrusion blocks 8 in turn. The second extrusion block 9 will drive the ear picker roller 5 to reciprocally move left and right, and the two ear picker rollers 5 are relatively displaced during the left and right movement, loosening the straw fibers stuck between the two ear picker rollers 5, rubbing off the straw fibers adhering to the ear picker roller 5, reducing the probability of straw fibers adhering to the ear picker roller 5, thereby reducing the probability of straw fibers winding around the ear picker roller 5 during the reverse rotation, reducing the influence of straw fiber adhesion on the distance between the two ear picker rollers 5, and further improving the cleaning efficiency of the ear picker roller 5.

[0038] After the reverse cleaning of the ear picker roller 5 is completed, the operator uses the power component of the frame 1 to control the two power gears 4 to resume normal rotation, so that the two ear picker rollers 5 resume normal rotation, and the ear picker roller 5 repeats the above steps to continue separating the ears and straw.

[0039] When it is necessary to stop using this device, the operator closes the power component of the frame 1 through the control terminal and cleans this device for the next use.

[0040] Embodiment 2

[0041] What this embodiment discloses is a flexible cutter bar for a corn harvester, which is further improved on the basis of Embodiment 1.

[0042] As Figure 3 shown in Figure 4 As shown in the figure, the frame 1 is rotatably connected with a telescopic housing 11. The telescopic part of the telescopic housing 11 is splined to its fixed part. The telescopic part of the telescopic housing 11 is rotatably connected with a connecting ring 1101 fixedly connected to the adjacent ear picker roller 5. The ear picking plate 6 is rotatably connected with the adjacent connecting ring 1101. In the above embodiment, the ear picking plate 6 is fixedly connected with the adjacent ear picker roller 5. In this embodiment, the ear picking plate 6 is rotatably connected with the adjacent ear picker roller 5. When the ear picker roller 5 reciprocally moves left and right relative to the power gear 4, the ear picker roller 5 drives the parts thereon to move. The ear picker roller 5 drives the telescopic part of the telescopic housing 11 to reciprocally move through the connecting ring 1101.

[0043] As Figure 4 shown in Figure 8As shown, the ear-picking roller 5 is fixedly connected with flexible strips 12 which are distributed circumferentially and have the same number as the ear-picking plates 6 thereon, the flexible strips 12 are located between adjacent ear-picking plates 6 and adjacent ear-picking rollers 5, the flexible strips 12 are in contact with the adjacent ear-picking plates 6, and the flexible strips 12 are used to seal the connection between the adjacent ear-picking plates 6 and the adjacent ear-picking rollers 5 to reduce the probability of fibers getting stuck between the adjacent ear-picking plates 6 and the adjacent ear-picking rollers 5.

[0044] like Figure 7 As shown, the telescopic part of the telescopic shell 11 is slidably connected with a plurality of circumferentially distributed limit blocks 13, and a second elastic member is fixedly connected between the limit block 13 and the telescopic part of the adjacent telescopic shell 11, wherein the second elastic member is a compression spring, and the ear picking roller 5 is provided with a plurality of circumferentially distributed limit parts 14, and the limit blocks 13 and the limit parts 14 are both provided with guiding inclined surfaces and planes, and the limit blocks 13 are used to squeeze all the limit parts 14 in the adjacent ear picking rollers 5, and when the front ear picking roller 5 rotates counterclockwise, the plane of the limit part 14 squeezes the plane of the limit block 13, and the limit block 13 blocks the limit part 14, and the front ear picking roller 5 drives the telescopic shell 11 to rotate as a whole through the limit part 14 and the limit block 13.

[0045] The contact surfaces between the fixed part of the telescopic shell 11 and the frame 1 are both friction surfaces. The friction resistance encountered by the fixed part of the telescopic shell 11 when rotating is X, and the resistance encountered when the limiting part 14 squeezes any limiting block 13 is Y, X>Y. When the front ear picking roller 5 rotates clockwise, the inclined surface of the limiting part 14 squeezes the inclined surface of the limiting block 13, and the fixed part of the telescopic shell 11 is affected by the friction resistance of the frame 1, the limiting block 13 moves, and the second elastic member between the limiting block 13 and the telescopic part of the adjacent telescopic shell 11 is compressed, and the front ear picking roller 5 no longer drives the telescopic shell 11 to rotate through the limiting part 14 and the limiting block 13.

[0046] like Figure 6 and Figure 7 As shown, the telescopic part of the telescopic shell 11 is fixedly connected with a toothless ring 15, and the ear picking plate 6 is fixedly connected with a rotating gear 16 located in the telescopic part of the telescopic shell 11. The toothless ring 15 is used to transmit the rotating gear 16. A torsion spring is fixedly connected between the ear picking plate 6 and the adjacent connecting ring 1101. When the front ear picking roller 5 rotates counterclockwise, the front ear picking roller 5 drives the telescopic shell 11 to rotate through the limiting part 14 and the limiting block 13, and the telescopic part of the telescopic shell 11 drives the toothless ring 15 to rotate, and the front ear picking roller 5 drives The dynamic connecting ring 1101 and the rotating gear 16 rotate around their axes. When the front ear picking roller 5 rotates clockwise, the front ear picking roller 5 no longer drives the telescopic shell 11 to rotate through the limiting portion 14 and the limiting block 13. The connecting ring 1101 and the telescopic shell 11 rotate relative to each other, and the rotating gear 16 and the toothless ring 15 are relatively displaced. If the rotating gear 16 and the toothless ring 15 are meshed at this time, the rotating gear 16 rotates on its own, and the axis of the ear picking roller 5 and the axis of the toothless ring 15 are collinear.

[0047] The specific working process is as follows:

[0048] During the use of this device, taking the counterclockwise rotation of the front ear picking roller 5 as an example, the front ear picking roller 5 drives the telescopic housing 11 to rotate through the limiting part 14 and the limiting block 13. The telescopic part of the telescopic housing 11 drives the toothless ring 15 to rotate. The front ear picking roller 5 drives the rotating gear 16 to rotate around its axis. At this time, the rotating gear 16 will not rotate.

[0049] When the front ear picking roller 5 rotates clockwise, the front ear picking roller 5 no longer drives the telescopic housing 11 to rotate through the limiting part 14 and the limiting block 13. The connecting ring 1101 and the telescopic housing 11 rotate relative to each other. The rotating gear 16 and the toothless ring 15 have relative displacement. If the rotating gear 16 and the toothless ring 15 are engaged at this time, the rotating gear 16 will rotate self - clockwise. The rotating gear 16 rotates self - clockwise and drives the ear picking plate 6 to turn counterclockwise. All the ear picking plates 6 on the two ear picking rollers 5 turn counterclockwise. The torsion spring between the ear picking plate 6 and the adjacent connecting ring 1101 twists and stores energy, increasing the distance for the straw to pass between the two ear picking rollers 5, making it smoother for the straw to pass between the two ear picking rollers 5, reducing the probability of the straw getting stuck between the two ear picking rollers 5, and thus improving the cleaning efficiency of the two ear picking rollers 5. When the rotating gear 16 moves out of engagement with the toothless ring 15, the torsion spring between the ear picking plate 6 and the adjacent connecting ring 1101 returns and no longer stores energy. The ear picking plate 6 drives the rotating gear 16 to rotate and reset relative to the ear picking roller 5, so that during the process of the rotating gear 16 rotating around the axis of the toothless ring 15, the ear picking plate 6 and the rotating gear 16 rotate self - clockwise continuously. During the cleaning process of the ear picking roller 5, through the reciprocating swing of the two ear picking plates 6, the fibers adhering to the ear picking plate 6 are loosened, and thus the impurities adhering to the ear picking roller 5 are more likely to fall off.

[0050] Embodiment 3

[0051] This embodiment discloses a flexible cutter bar for a corn harvester, which is further improved on the basis of Embodiment 2.

[0052] Such as Figure 1 And Figure 9As shown in the figure, the cutter 3 includes a power frame 17. The power frame 17 is electrically connected to the control terminal. The structure inside the power frame 17 can be an existing motor and gear set. The power frame 17 is installed on the lower side of the frame 1. The power frame 17 is slidably connected to a sliding frame 18. A third elastic member is fixedly connected between the power frame 17 and the sliding frame 18. The third elastic member is a compression spring. The power frame 17 is used to drive the sliding frame 18 to rotate. The sliding frame 18 is fixedly connected with a plurality of cutters 19 distributed circumferentially. The cutters 19 are used to cut the straw. The sliding frame 18 is provided with a plurality of protection parts 20 distributed circumferentially and having the same number as the cutters 19. A guiding surface is provided on the lower side of the protection part 20. The protection part 20 is located below the adjacent cutters 19. The width of the protection part 20 is greater than the width of the cutter 19. The protection part 20 is used to shield the lower side of the adjacent cutters 19.

[0053] The specific working process is as follows:

[0054] During the use of the device, the operator turns on the power frame 17 through the control terminal. The power frame 17 drives the sliding frame 18 to rotate. The sliding frame 18 drives all the protection parts 20 to rotate. When the protection part 20 contacts the impurities (such as stones) on the ground, the guiding surface of the protection part 20 is pressed and moves upward. The protection part 20 drives the sliding frame 18 to move upward. The third elastic member between the power frame 17 and the sliding frame 18 is compressed. The sliding frame 18 drives all the cutters 19 to move upward to reduce the probability of the cutters 19 breaking due to contact with impurities. After the protection part 20 loses contact with the impurities on the ground, the third elastic member between the power frame 17 and the sliding frame 18 rebounds and resets, so that the sliding frame 18, all the cutters 19 and all the protection parts 20 are reset.

[0055] When it is necessary to stop using the device, the operator turns off the power member of the frame 1 and the power frame 17 through the control terminal and cleans the device for the next use.

[0056] In summary, the invention includes but is not limited to the above embodiments. Any equivalent replacement or partial improvement carried out under the spirit and principle of the present invention will be regarded as within the protection scope of the present invention.

Claims

1. A flexible harvesting table for a corn harvester, comprising a delivery device (2) arranged on a frame (1), and a cutter (3) arranged on the frame (1), wherein the frame (1) is rotatably connected to two symmetrically distributed and mutually meshing power gears (4), the power gears (4) are slidably connected to an ear picking roller (5), the ear picking roller (5) is slidably and rotatably connected to the frame (1), and the ear picking roller (5) is provided with a plurality of circumferentially distributed ear picking plates (6); The ear picking roller (5) is rotatably connected to a rotating shaft (7), and is characterized in that: The rotating shaft (7) is rotatably connected to a rotating ring (701); a first elastic member is fixedly connected between the ear picking roller (5) and the rotating ring (701); the rotating shaft (7) is fixedly connected to a plurality of first extrusion blocks (8) distributed in a circumferential direction; a plurality of second extrusion blocks (9) distributed in a circumferential direction are fixedly connected to the ear picking roller (5) at a position close to the rotating shaft (7); the first extrusion block (8) is used to extrude all the second extrusion blocks (9) in adjacent ear picking rollers (5) so as to move the second extrusion blocks (9).

2. A flexible header for a corn harvester according to claim 1, characterized in that: The rotating shaft (7) is provided with a one-way bearing (10), and both the rotating shaft (7) and the one-way bearing (10) are rotatably connected to the frame (1).

3. A flexible header for a corn harvester according to claim 1, characterized in that: All the first extrusion blocks (8) on the same rotating shaft (7) form a group, and all the second extrusion blocks (9) on the same ear picking roller (5) form a group. The two groups of the first extrusion blocks (8) are asymmetrically distributed, and the two groups of the second extrusion blocks (9) are asymmetrically distributed.

4. A flexible header for a corn harvester according to claim 1, characterized in that: The frame (1) is rotatably connected to a telescopic shell (11); the telescopic portion of the telescopic shell (11) is rotatably connected to a connecting ring (1101) fixedly connected to an adjacent ear-picking roller (5); the ear-picking plate (6) is rotatably connected to the adjacent connecting ring (1101); and the ear-picking plate (6) is rotatably connected to the adjacent ear-picking roller (5).

5. A flexible header for a corn harvester according to claim 4, characterized in that: The ear-picking roller (5) is fixedly connected with flexible strips (12) which are distributed in a circumferential direction and have the same number as the ear-picking plates (6) thereon; the flexible strips (12) are located between adjacent ear-picking plates (6) and adjacent ear-picking rollers (5); and the flexible strips (12) are in contact with adjacent ear-picking plates (6).

6. A flexible header for a corn harvester according to claim 5, characterized in that: The telescopic part of the telescopic shell (11) is slidably connected to a plurality of circumferentially distributed limiting blocks (13); a second elastic member is fixedly connected between the limiting blocks (13) and the adjacent telescopic parts of the telescopic shell (11); the ear-picking roller (5) is provided with a plurality of circumferentially distributed limiting parts (14); the limiting blocks (13) are used to squeeze all the limiting parts (14) in the adjacent ear-picking rollers (5).

7. A flexible header for a corn harvester according to claim 6, characterized in that: The contact surfaces between the fixed part of the telescopic housing (11) and the frame (1) are both friction surfaces, the friction resistance experienced by the fixed part of the telescopic housing (11) when rotating is X, and the resistance experienced by the limiting part (14) when squeezing any of the limiting blocks (13) is Y, where X>Y.

8. A flexible header for a corn harvester according to claim 7, characterized in that: The telescopic portion of the telescopic housing (11) is fixedly connected to a toothless ring (15); the ear-picking plate (6) is fixedly connected to a rotating gear (16) located in the telescopic portion of the telescopic housing (11); the toothless ring (15) is used to transmit the rotating gear (16); and a torsion spring is fixedly connected between the ear-picking plate (6) and the adjacent connecting ring (1101).

9. A flexible header for a corn harvester according to claim 1, characterized in that: The cutter (3) comprises a power frame (17), the power frame (17) is mounted on the lower side of the frame (1), the power frame (17) is slidably connected to a sliding frame (18), a third elastic member is fixedly connected between the power frame (17) and the sliding frame (18), the sliding frame (18) is fixedly connected to a plurality of knives (19) distributed circumferentially, the sliding frame (18) is provided with protective parts (20) distributed circumferentially and having the same number as the knives (19), and the protective parts (20) are located on the lower side of the adjacent knives (19).

10. A flexible header for a corn harvester according to claim 9, characterized in that: The width of the protection portion (20) is greater than the width of the cutter (19).

Images