Gap-adjustable header excitation ear picking device capable of self-adapting to straw diameter

Abstract

The invention relates to a gap-adjustable header excitation snapping device self-adaptive to straw diameters. The device is composed of an eight-edge excitation snapping roller, a stem pulling roller, a power transmission system, a reciprocating cutter, a motor and a rack. The eight-edge excitation snapping roller comprises an outer snapping convex edge, an inner snapping star roller and a spring gap adjusting device; the spring gap adjusting device comprises a spring head, a spring, a spring sleeve and a spring base. According to the straw diameter self-adaptive and gap-adjustable header excitation snapping device provided by the invention, based on an excitation snapping principle, a pair of excitation snapping rollers of which the spatial positions are arranged in an edge-to-edge manner is designed, and the header snapping gap can be self-adaptively adjusted according to the diameter change of corn straws, so that the straw diameter can be adjusted more accurately, and the straw diameter can be adjusted more accurately. The problems of straw breakage, header blockage and the like caused by diameter difference of corn straws in different areas are solved, and low-loss and high-efficiency corn ear picking is realized.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a gap-adjustable cutting platform vibration ear-picking device which is adaptive to straw diameter. Background Art

[0002] The traditional roller ear picking device mainly removes corn ears by directly acting on the ear picking roller, and separates the ear from the stem through the squeezing force. The grains are severely damaged and the loss of grains is large during the ear picking process.

[0003] The horizontal roller ear picking device is a widely used form of roller ear picking device. It consists of a pair of relatively rotating horizontal rollers, a feeding device, and a conveying device. The angle between the ear picking roller and the horizontal plane is 25~35°. When picking ears, the corn plants pass through the reel and the feeding device into the gap between the ear picking rollers. The ear picking rollers grab the corn stalks and pull them backward. The ears are located in the gap between the ears and are picked up by the squeezing and stretching forces. The horizontal roller corn ear picking technology has a greater squeezing effect on the corn stalks, which are easy to break. At the same time, there is a problem of severe damage to the corn ears.

[0004] my country has a vast territory. In different corn-growing areas, the thickness of crop straw is inconsistent due to different corn varieties and moisture content during harvest. However, the gap between the ear picking rollers is generally fixed, and the ear picking gap cannot be adaptively adjusted in real time, resulting in problems such as straw breakage or blockage during the ear picking process, affecting the reliability of the combine harvester.

[0005] The vertical roller corn ear-picking header changes the spatial position of the ear-picking rollers from a horizontal position to an upright position. The header has a simple overall structure and is light in weight. Therefore, the use of the vertical vibration ear-picking technology and device for corn harvester headers that is adaptively adjusted according to the gap between corn stalks can solve problems such as mechanical failures caused by stalk breakage and blockage, and effectively solves a series of problems such as corn stalk breakage, severe ear damage, and large grain loss. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the corn stalks are easily broken and blocked due to the inability of the picking gap to adapt to the different diameters of all corn stalks during corn picking. A cutting table vibration picking technology and device with an adjustable gap and adaptive to different corn stalk diameters is developed.

[0007] The gap-adjustable cutting-table vibration ear-picking device that is adaptive to the diameter of the straw is composed of an octagonal vibration ear-picking roller, a stem-pulling roller, a power transmission system, a reciprocating cutter, a motor, and a frame; the octagonal vibration ear-picking roller includes an outer ear-picking ridge, an inner ear-picking star roller, and a spring gap adjustment device; the spring gap adjustment device includes a spring head, a spring, a spring sleeve, and a spring base.

[0008] The inner ear-picking star roller comprises an I-shaped through groove, a spring-fixed circular groove, and an inner ear-picking star roller clamping tooth; the outer ear-picking convex ridge comprises a convex ridge top ridge, a convex ridge inclined surface, a convex ridge side wing, an outer ear-picking clamping tooth, and a spring-fixed hexagonal groove.

[0009] The spring gap adjusting device includes a spring head, a spring, a spring sleeve, and a spring base. The outer ear picking teeth of the outer ear picking ridge and the inner ear picking star roller teeth of the inner ear picking star roller are clamped with each other. The spring head of the spring gap adjusting device is fixed in the spring fixing hexagonal groove of the outer ear picking ridge, and the spring base of the spring gap adjusting device is connected to the spring fixing circular groove of the inner ear picking star roller through threads.

[0010] There are two pairs of eight-sided vibration ear-picking rollers, including two inner ear-picking star rollers, 16 outer ear-picking ridges, and 80 spring gap adjustment devices.

[0011] The octagonal vibration ear picking rollers are installed in pairs and on the same rotating shaft as the stem pulling roller. The octagonal vibration ear picking rollers are installed so that the convex ridge top edge of one octagonal vibration ear picking roller faces the inner ear picking star roller of the other octagonal vibration ear picking roller.

[0012] A driving gear and a driven gear are respectively installed under the stem pulling roller, and the octagonal vibration ear picking roller realizes transmission through gear meshing.

[0013] The spring gap adjustment device, when the top edge of the outer ear picking ridge is acted upon by force, the spring inside the outer ear picking ridge undergoes radial displacement, and the spring head moves radially along the spring sleeve, driving the outer ear picking ridge to move along the I-shaped through groove. Due to the different diameters of corn stalks, the pressure on the top edge of the ridge is different, thereby achieving adjustment of the spring at different distances to prevent mechanical failure caused by stalk blockage.

[0014] Under the action of the straw-pulling chain, the root of the corn stalk first enters the stem-pulling roller part of the ear-picking device, and the stem-pulling stick applies pulling force to the stalk and guides the corn stalk to move obliquely downward as the two stem-pulling rollers rotate. At this time, the adaptive gap-adjustable octagonal vibration ear-picking roller coaxial with the stem-pulling roller has a spacing of 45~55mm between the two rollers, and continuously outputs exciting force. Under the action of the spring gap adjustment device, the adaptive gap can be adjusted according to the change of corn diameter, thereby ensuring the adaptive adjustment of the gap of the corn vibration ear-picking roller.

[0015] During the ear picking process, the convex ridge top edge of one octagonal vibration ear picking roller is always kept in the middle position of the surface of the inner ear picking star roller of the other octagonal vibration ear picking roller. The two rollers rotate to generate a simple harmonic exciting force when clamping the corn stalks. As the pressure on the convex ridge top edge is different, the convex ridge top edge moves different distances along the radial direction of the spring sleeve, thereby realizing adaptive gap adjustment.

[0016] The beneficial effects of the present invention are concentrated in the following aspects:

[0017] 1. The present invention provides a gap-adjustable cutting-table vibration ear picking device which is adaptive to the diameter of corn stalks. The convex top edge of the octagonal vibration ear picking roller cooperates with the inner ear picking star roller of the octagonal vibration ear picking roller to clamp corn stalks and vibrate the corn stalks to generate a vibration force, thereby realizing a contact-free ear picking method for corn ears and ear picking rollers, and solving the problem of serious damage and high grain loss caused by the contact between the traditional ear picking roller and the corn ears.

[0018] 2. The present invention provides a cutting table vibration ear picking device with an adjustable gap that is adaptive to the diameter of the straw. The device can adaptively adjust the ear picking gap according to the differences in straw diameters of different moisture contents and different corn varieties, thereby avoiding malfunctions such as straw breakage and blockage of the cutting table during the corn ear picking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axonometric view of the harvesting platform vibration ear picking device.

[0020] Figure 2 The invention is a schematic diagram of a vertical cutting table vibration ear picking device of a corn combine harvester with an adjustable gap that is adaptive to the diameter of the straw.

[0021] Figure 3 It is a schematic diagram of the structure of the harvesting platform vibration ear picking device from a side view.

[0022] Figure 4 This is the structural diagram of the octagonal vibration ear-picking roller.

[0023] Figure 5 This is a structural diagram of the outer ear-picking ridges of the octagonal vibration ear-picking roller.

[0024] Figure 6 This is the structural diagram of the inner ear-picking star roller of the octagonal vibration ear-picking roller.

[0025] Figure 7 The present invention is a structural diagram of a spring gap adjustment device for an octagonal vibration ear-picking roller.

[0026] Figure 8 This is a schematic diagram of the operation of the octagonal vibration ear-picking roller.

[0027] In the figure:

[0028] 1. Vibration ear-picking device on the cutting table; 2. Reciprocating cutter; 3. Motor; 4. Auger; 5. Bridge; 6. Eight-sided vibration ear-picking roller; 7. Stem-pulling roller; 8. Frame; 9. Power transmission system; 10. Straight-grained star wheel; 11. Driven gear; 12. Driving gear; 13. Pinion; 14. Transmission shaft of ear-picking roller; 15. External ear-picking ridge; 16. Spring gap adjustment device; 17. Internal ear-picking star roller; 18. Top ridge of ridge; 19. Inclined surface of ridge; 20. Side wings of ridge; 21. External ear-picking teeth; 22. Spring fixing hexagonal groove; 23. I-shaped through groove; 24. Spring fixing circular groove; 25. Internal ear-picking star roller teeth; 26. Spring head; 27. Spring; 28. Spring sleeve; 29. ​​Spring base. DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention will be described in detail below. In order to avoid too much unnecessary details, the well-known structures or functions will not be described in detail in the following examples. Unless otherwise defined, the technical and scientific terms used in the following examples have the same meanings as those generally understood by those skilled in the art to which the present invention belongs.

[0030] A gap-adjustable cutting table vibration ear-picking device (1) that is adaptive to straw diameter comprises an octagonal vibration ear-picking roller (6), a stem-pulling roller (7), a power transmission system (9), a reciprocating cutter (2), and a motor (3). The octagonal vibration ear-picking roller (6) rotates coaxially with the stem-pulling roller (7), the octagonal vibration ear-picking roller (6) is located above the stem-pulling roller (7) at a distance of 45 to 55 mm, and the octagonal vibration ear-picking roller (6) and the stem-pulling roller (7) are driven by gears to rotate coaxially.

[0031] In this embodiment, the power transmission system (9) comprises an ear picking roller transmission shaft (14), a pinion (13), a driving gear (12), and a driven gear (11); the motor (3) drives the ear picking roller transmission shaft (14) to rotate through a chain transmission; the ear picking roller transmission shaft (14) drives the pinion (13) to rotate; the pinion (13) meshes with the driving gear (12) to drive the driving gear (12) and the driven gear (11) to transmit; the driving gear (12) and the driven gear (11) respectively drive the octagonal exciting ear picking roller (6) to rotate; the initial installation position of the octagonal exciting ear picking roller (6) is the middle position where the convex ridge top ridge (18) of the octagonal exciting ear picking roller (6) faces the surface of the inner ear picking star roller (17).

[0032] In this embodiment, the power transmission system (9) does not interfere with the reel star wheel (10).

[0033] In this embodiment, the corn stalks first enter the stalk cutting section of the ear picking device, and the stalks are cut by the reciprocating cutter (2). While the corn stalks are being cut, the reed star wheel (10) rotates as the machine advances, and the corn stalks move to the reed chain inlet along with the reed star wheel (10). After the corn stalks enter the reed chain, the reed chain teeth exert pressure on the corn stalks to guide the corn stalks to move toward the ear picking section of the ear picking device, thereby changing the posture of the corn stalks and changing the corn stalks from an upright state to an oblique state at a certain angle to the ground. The root of the corn stalks first enters the ear picking section, and under the pulling action of the reed chain, the corn stalks near the root first enter the stem pulling rod (7) portion of the ear picking device.

[0034] In this embodiment, after the corn stalks enter, the stem pulling stick (7) applies a pulling force to the stalks, and rotates with a pair of octagonal vibration ear picking rollers (6), clamping and guiding the corn stalks to move obliquely downward.

[0035] In this embodiment, while the stem pulling stick (7) is pulling the corn stalks, the adaptive gap adjustable exciting ear picking roller above the stem pulling stick (7) rotates coaxially and continuously outputs exciting force. Under the action of the spring gap adjustment device (16), the adaptive gap adjustable function according to the change of corn diameter can be realized.

[0036] In this embodiment, after the ear picking work is completed, the corn falls into the ear conveying part, which is composed of an auger (4) and a conveyor. The picked corn ears enter the conveying auger (4), and the auger (4) rotates to send the picked corn ears to the conveying port, and the conveyor transports the ears to the grain storage box.

[0037] In this embodiment, the gap-adjustable cutting table vibration ear-picking device (1) that is adaptive to the diameter of the straw is fixed to the cutting table of the corn combine harvester by bolts, and three gap-adjustable cutting table vibration ear-picking devices that are adaptive to the diameter of the straw are installed and located in front of the auger (4), so as to realize a three-row corn harvesting operation.

[0038] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the scope of application of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting table vibration ear picking device with adjustable gap and self-adaptive to straw diameter, comprising an octagonal vibration ear picking roller (6), a stem pulling roller (7), a power transmission system (9), a reciprocating cutter (2), a motor (3), and a frame (8), characterized in that: The octagonal vibration ear picking roller (6) comprises an outer ear picking convex ridge (15), a spring gap adjustment device (16), and an inner ear picking star roller (17); the inner ear picking star roller (17) comprises an I-shaped through groove (23), a spring fixing circular groove (24), and an inner ear picking star roller clamping tooth (25); the outer ring diameter of the inner ear picking star roller (17) is 40-50 mm, the length is 300-400 mm, the inner ear picking star roller (17) is evenly provided with 8 I-shaped through grooves (23); the total length of the I-shaped through grooves (23) is 300-400 mm, the width is 10-15 mm, and the height is 10-15 mm; the I-shaped through grooves (23) are divided into three parts, and the heights from top to bottom are 4-6 mm, 4-6 mm, and 1-2 mm, respectively. mm, the widths are 14-16 mm, 10-12 mm, and 9-11 mm, respectively. Five spring fixing circular grooves (24) with equal spacing are opened at the bottom of each I-shaped through groove (23). The diameter of the spring fixing circular groove (24) is 4-6 mm, and the depth is 1-2 mm. One end of the spring gap adjustment device (16) is connected to the spring fixing circular groove (24) of the inner ear picking star roller (17) by threading, and the other end is clamped with the spring fixing hexagonal groove (22) of the outer ear picking convex ridge (15). The outer ring of the inner ear picking star roller (17) is welded with the inner ear picking star roller clamping teeth (25). The inner ear picking star roller clamping teeth (25) are 300-400 mm in length, 1-2 mm in width, and 1-2 mm in height.

2. According to the invention of claim 1, a gap-adjustable cutting table vibration ear-picking device that is adaptive to the diameter of straw, the outer ear-picking ridge (15) comprises a ridge top ridge (18), a ridge slope (19), a ridge side wing (20), an outer ear-picking clamping tooth (21), and a spring-fixed hexagonal groove (22), the outer ear-picking ridge (15) having a length of 300-400 mm, a width of 10-15 mm, a height of 1-2 mm, and a ridge top ridge (18) and a ridge slope (19). ) angle is 100~120°, the ridge flank (20) is 300~400mm long, 1~2mm wide, and 3~4mm high, the outer ear picking clamping tooth (21) is 300~400mm long, 1~2mm wide, and 1~2mm high, and 5 spring fixing hexagonal grooves (22) are equidistantly provided at the bottom of the outer ear picking ridge (15), and the inscribed circle diameter of the spring fixing hexagonal groove (22) is 2~3mm and the depth is 1~2mm.

3. According to the gap-adjustable harvesting platform vibration ear-picking device of claim 1, the spring gap adjustment device (16) comprises a spring head (26), a spring (27), a spring sleeve (28), and a spring base (29). The spring head (26) is divided into 4 sections, the top section is a hexagonal prism, and the lower 3 sections are all cylinders. The heights from top to bottom are 2~3mm, 1~2mm, 2~3mm, and 1~2mm, respectively. The diameter of the inscribed circle of the hexagonal prism section is 2~3mm, and the diameters of the cylinders are 3~4mm, 2~3mm, and 3~4mm, respectively. The spring head (26) cooperates with the spring fixing hexagonal groove (22) at the bottom of the outer ear picking ridge (15), and the spring (27) is welded to the lower part of the spring head (26). The spring base (29) is divided into two sections, with a diameter of 6~8mm and 4~6mm from top to bottom. The lower end of the cylinder is threaded and threaded with the spring fixing circular groove (24) of the inner ear picking star roller (17). The spring sleeve (28) has a diameter of 4~6mm and a height of 7~10mm. The spring sleeve (28) is welded on the spring base (29), and the spring head (26) slides up and down along the inner wall of the spring sleeve (28).

4. According to the cutter vibration ear picking device with adjustable gap and adaptive straw diameter as described in claim 1, the spacing between the octagonal vibration ear picking rollers (6) is 80-100 mm, the adjustment range of the vibration ear picking roller gap is 0-4 mm, the convex ridge top edge (18) of the octagonal vibration ear picking roller (6) faces the middle position of the surface of the inner ear picking star roller (17) of the octagonal vibration ear picking roller (6), and the two octagonal vibration ear picking rollers (6) rotate in opposite directions.

5. According to claim 1, a gap-adjustable cutting table vibration ear-picking device that is adaptive to straw diameter, the power transmission system (9) includes an ear-picking roller transmission shaft (14), a pinion (13), a driving gear (12), and a driven gear (11); the motor (3) drives the ear-picking roller transmission shaft (14) to rotate through a chain drive, the ear-picking roller transmission shaft (14) drives the pinion (13) to rotate, the pinion (13) meshes with the driving gear (12), drives the driving gear (12) and the driven gear (11) to transmit, the driving gear (12) and the driven gear (11) respectively drive the octagonal vibration ear-picking roller (6) to rotate, and the initial installation position of the octagonal vibration ear-picking roller (6) is the middle position where the convex ridge top edge (18) of the octagonal vibration ear-picking roller (6) faces the surface of the inner ear-picking star roller (17).

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