Coaxial positive and negative rotation stub root breaking device

Abstract

A coaxial positive and negative rotation stubble and root breaking device belongs to the technical field of agricultural machinery and comprises an upper shell, a coaxial positive and negative rotation mechanism, a swing stubble mechanism and an eccentric screw root breaking mechanism. The upper shell is externally provided with a three-point suspension frame at the front end. The coaxial positive and negative rotation mechanism is located at the lower part of the upper shell, and the swing stubble mechanism is located at the middle part of the mechanism. In the present application, the coaxial positive and negative rotation mechanism utilizes a gear set to realize the opposite rotation of two stubble cutters. Through the cooperation of the positive and negative rotation stubble cutter and the swing stubble cutter, sufficient support force is provided for cutting stubble, and the stubble is cut into pieces in the form of shearing and sliding, thereby solving the problem of insufficient stubble breaking. The eccentric screw root breaking mechanism is located at the lowermost part of the stubble mechanism. Through the eccentric screw root breaking mechanism, two groups of screw cutters with different lengths, diameters and thread depths are horizontally eccentrically rotated, the centrifugal force of the disturbed soil is reduced, the root breaking and soil disturbing amount is reduced, and the problem of water and soil loss caused by large soil disturbance during the operation of the traditional root stubble processing device is solved.

Description

Technical Field

[0001] This invention relates to a coaxial forward and reverse rotation cutting and root breaking device, belonging to the field of agricultural machinery technology. Background Technology

[0002] Existing stubble treatment devices suffer from insufficient stubble crushing and significant soil disturbance during operation, resulting in a low stubble decomposition rate. This affects the quality of subsequent sowing operations, causes severe soil erosion, and is detrimental to seedling growth and sustainable agricultural development. Summary of the Invention

[0003] This invention aims to provide a coaxial forward and reverse stubble-breaking device that achieves thorough stubble breaking with minimal soil disturbance. It utilizes a gear set composed of three mutually perpendicular bevel gears to achieve opposite rotation of two stubble-breaking blades. Through the cooperation of the forward and reverse stubble-breaking blades and the oscillating stubble-breaking blade, sufficient support is provided for the stubble while simultaneously breaking it up using both shearing and sliding cutting methods, thus solving the problem of insufficient stubble breaking. An eccentric spiral stubble-breaking mechanism is located at the bottom of the stubble-breaking mechanism. This mechanism enables two sets of spiral blades with different lengths, diameters, and thread depths to rotate eccentrically horizontally, reducing the centrifugal force on the disturbed soil and minimizing soil movement during stubble breaking. This solves the problem of soil erosion caused by significant soil disturbance during the operation of traditional stubble-breaking devices.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A coaxial forward and reverse stubble cutting and root breaking device includes an upper shell, a coaxial forward and reverse stubble cutting mechanism, an oscillating stubble cutting mechanism, and an eccentric spiral root breaking mechanism. A three-point suspension frame is provided at the front end of the outer side of the upper shell. The coaxial forward and reverse stubble cutting mechanism is located in the center-forward position inside the upper shell. The oscillating stubble cutting mechanism is located in the middle of the stubble cutting mechanism. The eccentric spiral root breaking mechanism is located at the bottom of the stubble cutting mechanism.

[0006] The coaxial forward and reverse shaving mechanism is characterized by a battery fixedly mounted on a top plate located slightly forward of the center inside the upper housing, a motor fixedly mounted below the battery, the battery and motor connected via an internal power cable, a support frame fixedly mounted on the rear end face inside the upper housing, a reducer housing located below the motor and fixedly connected to the uppermost support arm of the support frame, a first base and a second base fixedly mounted on the upper and lower top surfaces inside the reducer housing, a third base fixedly mounted on the left side inside the reducer housing, and a first bevel gear, a second bevel gear, and a third bevel gear rotatably mounted on the first... On the base, the second base, and the third base, the first bevel gear meshes with the third bevel gear, and the third bevel gear meshes with the second bevel gear. The first bevel gear and the second bevel gear are also fixedly mounted on the power output shaft and the reducer output shaft, respectively. The power output shaft passes concentrically through the reducer output shaft without contact. The upper end of the power output shaft is fixedly connected to the lower part of the motor. The three first cutting blades are fixedly mounted at equal angles around the lower part of the power output shaft. The upper end of the reducer output shaft is fixedly connected to the second base, and the three second cutting blades are fixedly mounted at equal angles around the lower part of the reducer output shaft.

[0007] The oscillating shaving mechanism is characterized by its oscillating shaving disc being concentrically fixed to the motor output shaft. The oscillating shaving blade is hinged to the middle support arm of the support frame via the oscillating central shaft. The diameter of the oscillating shaving disc is smaller than the minimum straight-line distance from the axis of the power output shaft to the blade edge of the oscillating shaving blade. The outermost serration of the blade edge is much larger than the other inner serrations. The other serrations are uniform in size and regularly arranged. The blade root is irregularly shaped like a cross, with a cross-shaped cutout along the outer contour of the blade root in the front middle section. The oscillating central shaft is located at the tail of the blade root of the oscillating shaving blade. The following cylinder is fixed on the outer edge of the oscillating shaving disc and inside the blade root. The cross-shaped part of the blade root extends along a curved surface formed by the distance from the axis of the motor output shaft to the axis of the oscillating central shaft as the radius and the oscillating central shaft as the axis of rotation. The extension length ensures that the motor output shaft will not collide with any part of the oscillating shaving blade during the oscillation process.

[0008] The eccentric spiral root-breaking mechanism is characterized by a perforated disc frame fixedly mounted on the lowest support arm of the support frame. The eccentric rotating main shaft and the four eccentric rotating secondary shafts are non-coaxial, with their upper and lower parts connected by plates. The upper end of the eccentric rotating main shaft is concentrically fixedly mounted on the bottom end of the power output shaft passing through the perforated disc frame. The lower end of the eccentric rotating main shaft is hinged to the eccentric rotating cutter head. The upper ends of the four eccentric rotating secondary shafts are hinged to the perforated disc frame, and the lower ends are hinged to the eccentric rotating cutter head. The first set of spiral cutters and the second set of spiral cutters are both fixedly mounted perpendicularly to the lower end of the eccentric rotating cutter head. The circular array diameter, thread depth, and diameter of the first set of spiral cutters are larger than those of the second set of spiral cutters, while the length is smaller.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention utilizes a coaxial forward and reverse rotation mechanism to realize the forward and reverse rotation of the stubble cutter. Through the cooperation of the forward and reverse stubble cutter and the swing stubble cutter, sufficient support force is provided for the stubble to be cut, while the stubble is shredded by both shearing and sliding cutting, solving the problem of insufficient stubble shredding. The eccentric spiral root breaking mechanism utilizes two sets of spiral blades with different lengths, diameters, and thread depths to rotate in the horizontal direction, using both cutting and tearing methods to separately treat the coarse and hard roots in the shallow soil layer and the slender and flexible roots in the deeper soil layer, solving the problems of insufficient crop root breaking and soil erosion caused by large soil disturbance. The three mechanisms work together to carry out targeted operations for stubble cutting and root breaking, jointly solving the problems of insufficient stubble shredding and large soil disturbance in traditional rotary tillers. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0011] Figure 1 A schematic diagram of a coaxial forward and reverse reversing cutting and root breaking device.

[0012] Part numbers in the diagram: 1. Three-point suspension bracket 2. Upper housing 3. Battery 4. Motor 5. Power output shaft 6. First base 7. First bevel gear 8. Support frame 9. Reducer housing 10. Second bevel gear 11. Second base 12. Reducer output shaft 13. Perforated disc frame 14. Eccentric rotating secondary shaft 15. Eccentric rotating cutter head 16. First set of spiral cutters 17. Second set of spiral cutters 18. Eccentric rotating main shaft 19. First shaving cutter 20. Oscillating shaving cutter head 21. Oscillating shaving cutter 22. Second shaving cutter 23. Third bevel gear 24. Third base 25. Follower cylinder 26. Oscillating central shaft Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] The present invention will be further described in detail below with reference to the embodiments.

[0015] like Figure 1 The following is a specific embodiment of the coaxial forward and reverse rotation cutting and root breaking device provided by the present invention:

[0016] A coaxial forward and reverse stubble cutting and root breaking device includes an upper shell 2, a coaxial forward and reverse stubble cutting mechanism, an oscillating stubble cutting mechanism, and an eccentric spiral root breaking mechanism. A three-point suspension frame 1 is provided at the outer front end of the upper shell 2. The coaxial forward and reverse stubble cutting mechanism is located in the center-forward position inside the upper shell 2. The oscillating stubble cutting mechanism is located in the middle of the stubble cutting mechanism. The eccentric spiral root breaking mechanism is located at the bottom of the stubble cutting mechanism.

[0017] The coaxial forward and reverse shaving mechanism is characterized by the following: the battery 3 is fixedly mounted on the top plate at the center-forward position inside the upper housing 2; the motor 4 is fixedly mounted below the battery 3; the battery 3 and the motor 4 are connected via an internal power cable; the support frame 8 is fixedly mounted on the rear end face inside the upper housing 2; the reducer housing 9 is located below the motor 4 and is fixedly connected to the uppermost support arm of the support frame 8; the first base 6 and the second base 11 are fixedly mounted on the upper and lower top surfaces inside the reducer housing 9, respectively; the third base 24 is fixedly mounted on the left side inside the reducer housing 9; and the first bevel gear 7, the second bevel gear 10, and the third bevel gear 23 are rotatably mounted on the first base 6. On the second base 11 and the third base 24, the first bevel gear 7 meshes with the third bevel gear 23, and the third bevel gear 23 meshes with the second bevel gear 10. The first bevel gear 7 and the second bevel gear 10 are also fixedly mounted on the power output shaft 5 and the reducer output shaft 12, respectively. The power output shaft 5 passes through the reducer output shaft 12 without contact. The upper end of the power output shaft 5 is fixedly connected to the lower part of the motor 4. Three first cutting blades 19 are fixedly mounted at equal angles around the lower part of the power output shaft 5. The upper end of the reducer output shaft 12 is fixedly connected to the second base 11. Three second cutting blades 22 are fixedly mounted at equal angles around the lower part of the reducer output shaft 12.

[0018] The oscillating shaving mechanism is characterized by the oscillating shaving disc 20 being concentrically fixed to the motor output shaft 5, and the oscillating shaving blade 21 being hinged to the intermediate support arm of the support frame 8 via the oscillating central shaft 26. The diameter of the oscillating shaving disc 20 is smaller than the minimum straight-line distance from the axis of the power output shaft 5 to the blade edge of the oscillating shaving blade 21. The outermost inverted triangular serrations of the blade edge of the oscillating shaving blade 21 are much larger than the other inner serrations. The other serrations are of uniform size and regularly arranged. The blade root is irregularly shaped like a cross, with the front middle part having a shape along the outer contour of the blade root. The blade has a cross-shaped hollow design. The pivoting central shaft 26 is located at the root of the pivoting shaving blade 21. The follower cylinder 25 is fixed on the outer edge of the pivoting shaving blade disc 20 and inside the root of the pivoting shaving blade 21. The cross-shaped part at the root of the pivoting shaving blade 21 extends along a curved surface formed by the distance from the axis of the motor output shaft 5 to the axis of the pivoting central shaft 26 as the radius and the pivoting central shaft 26 as the axis of rotation. The extension length can ensure that the motor output shaft 5 will not collide with any part of the pivoting shaving blade 21 during the pivoting process.

[0019] The eccentric spiral root-breaking mechanism is characterized by a perforated disc frame 13 fixedly mounted on the lowest support arm of the support frame 8. The eccentric rotating main shaft 18 and the four eccentric rotating secondary shafts 14 are non-coaxial, with their upper and lower parts connected by plates. The upper end of the eccentric rotating main shaft 18 is concentrically fixedly mounted on the bottom end of the power output shaft 5 that passes through the perforated disc frame 13. The lower end of the eccentric rotating main shaft 18 is hinged to the eccentric rotating cutter head 15. The upper ends of the four eccentric rotating secondary shafts 14 are hinged to the perforated disc frame 13, and the lower ends are hinged to the eccentric rotating cutter head 15. The first set of spiral cutters 16 and the second set of spiral cutters 17 are both fixedly mounted perpendicularly to the lower end of the eccentric rotating cutter head 15. The circular array diameter, thread depth, and diameter of the first set of spiral cutters 16 are larger than those of the second set of spiral cutters 17, while the length is smaller than that of the second set of spiral cutters 17.

[0020] When the coaxial forward and reverse mechanism is in operation, the power unit drives the device forward through the three-point suspension frame 1. The stubble enters the working area of ​​the coaxial forward and reverse stubble cutting mechanism. The battery 3 supplies power to the motor 4, which drives the power output shaft 5 to rotate. Part of the power from the power output shaft 5 drives the first bevel gear 7 to rotate, which in turn drives the third bevel gear 23 to rotate. The third bevel gear 23 then drives the second bevel gear 10 to rotate, thereby transmitting a portion of the power from the power output shaft 5 to the reducer output shaft 12 and achieving the connection between the power output shaft 5 and the reducer output shaft 12. The coaxial forward and reverse rotation of the power output shaft 5 drives the three first cutting blades 19 to rotate, and the reducer output shaft 12 drives the three second cutting blades 22 to rotate. The serrations of the first cutting blades 19 and the second cutting blades 22 change from large to small from the root of the blade outward. The outermost serration is much larger than the adjacent inner serration, and the serration tips are turned inward at a certain angle, which has a certain fixing and inward pulling effect on the stubble, preventing the stubble from slipping out during the crushing process. In addition, the first cutting blades 19 and the second cutting blades 22 rotate in opposite directions, which provides mutual support and crushing function for the stubble.

[0021] When the oscillating stubble cutting mechanism is in operation, the motor output shaft 5 drives the oscillating stubble cutting disc 20 to rotate, which in turn drives the follower cylinder 25 to rotate. The follower cylinder 25 rotates along with the oscillating stubble cutting disc 20, while simultaneously driving the oscillating stubble cutting blade 21 to oscillate around the oscillating central axis 26. The serrations of the oscillating stubble cutting blade 21 are generally of equal size and arranged regularly. The outermost inverted triangular serrations are much larger than the other serrations, which have a certain fixing effect on the stubble body and prevent the stubble body from slipping out during the crushing process. The oscillation speed of the oscillating stubble cutting blade 21 is less than the rotation speed of the first stubble cutting blade 19 and the second stubble cutting blade 22, providing a certain support force for the crushing work of the first stubble cutting blade 19 and the second stubble cutting blade 22. The first stubble cutting blade 19, the second stubble cutting blade 22, and the oscillating stubble cutting blade 21 cooperate with each other to achieve comprehensive support crushing of the stubble body, effectively improving the crushing performance of the device on the stubble body.

[0022] When the spiral root-breaking mechanism is in operation, the perforated disc frame 13 remains stationary. The power output shaft 5 passes through the perforated disc frame 13 and drives the eccentric rotating main shaft 18 to rotate. The eccentric rotating main shaft 18 drives the eccentric rotating cutter head 15 to rotate eccentrically in the horizontal direction, which in turn drives the first set of spiral cutters 16 and the second set of spiral cutters 17 to rotate eccentrically in the horizontal direction. The four eccentric rotating secondary shafts 14, while rotating with the eccentric rotating cutter head 15, also provide support for the eccentric rotating cutter head 15 to prevent it from rotating on its own. The first set of spiral cutters 16 contacts the root system before the second set of spiral cutters 17 to break up the coarse and hard roots in the shallow soil layer. Then, the second set of spiral cutters 17 contacts the root system to break up the slender and flexible roots in the deeper soil layer, thus achieving thorough breaking up of the stubble root system.

[0023] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coaxial forward and reverse stubble cutting and root breaking device, comprising an upper housing (2), a coaxial forward and reverse stubble cutting mechanism, a swing stubble cutting mechanism, and an eccentric spiral root breaking mechanism, wherein a three-point suspension frame (1) is provided at the outer front end of the upper housing (2), the coaxial forward and reverse stubble cutting mechanism is located at the center front position inside the upper housing (2), a battery (3) is fixedly mounted on the top plate at the center front position inside the upper housing (2), a motor (4) is fixedly mounted below the battery (3), the battery (3) and the motor (4) are connected through an internal power line, a support frame (8) is fixedly mounted on the rear end face inside the upper housing (2), a reducer housing (9) is located below the motor (4) and fixedly connected to the uppermost support arm of the support frame (8), the swing stubble cutting mechanism is located in the middle of the stubble cutting mechanism, and the eccentric spiral root breaking mechanism is located at the bottom of the stubble cutting mechanism, characterized in that The oscillating shaving disc (20) is concentrically fixed to the power output shaft (5). The oscillating shaving blade (21) is hinged to the middle support arm of the support frame (8) via the oscillating central shaft (26). The diameter of the oscillating shaving disc (20) is smaller than the minimum straight-line distance from the axis of the power output shaft (5) to the blade of the oscillating shaving blade (21). The outermost inverted triangular serration of the blade of the oscillating shaving blade (21) is much larger than the other serrations on the inner side. The other serrations are uniform in size and regularly arranged. The root of the blade is irregularly shaped like a cross. The front middle part has a cross-shaped hollow along the outer contour of the root. The oscillating central shaft (26) is located on the oscillating shaving blade (21). At the tail of the blade root, the follower cylinder (25) is fixed on the outer edge of the swing cutting blade disc (20) and inside the root of the swing cutting blade (21). The "+" shaped part of the root of the swing cutting blade (21) extends along the curved surface formed by the distance from the axis of the power output shaft (5) to the axis of the swing center shaft (26) as the radius, with the swing center shaft (26) as the axis of rotation. The extension length can ensure that the power output shaft (5) will not collide with any part of the swing cutting blade (21) during the swing process.

2. The coaxial forward and reverse rotation cutting and root breaking device according to claim 1, characterized in that... The first base (6) and the second base (11) are fixedly mounted on the upper and lower top surfaces inside the reducer housing (9), respectively. The third base (24) is fixedly mounted on the left side inside the reducer housing (9). The first bevel gear (7), the second bevel gear (10), and the third bevel gear (23) are rotatably mounted on the first base (6), the second base (11), and the third base (24), respectively. The first bevel gear (7) meshes with the third bevel gear (23), and the third bevel gear (23) meshes with the second bevel gear (10). The first bevel gear (7) and the second bevel gear (10) are also fixedly mounted on the power output shaft (5) and the reducer output shaft (12), respectively. The power output shaft (5) passes through the reducer output shaft (12) concentrically without contact. The upper end of the power output shaft (5) is fixedly connected to the lower part of the motor (4). The three first cutting blades (19) are fixedly mounted at equal angles around the lower part of the power output shaft (5). The upper end of the reducer output shaft (12) is connected to the second base (11). The three second cutting blades (22) are fixedly mounted at equal angles around the lower part of the reducer output shaft (12).

3. The coaxial forward and reverse reversing cutting and root breaking device according to claim 1, characterized in that... The perforated disc frame (13) is fixedly mounted on the lowest support arm of the support frame (8). The eccentric rotating main shaft (18) and the four eccentric rotating secondary shafts (14) are non-coaxially connected by plates. The upper end of the eccentric rotating main shaft (18) is concentrically fixedly mounted on the bottom end of the power output shaft (5) that passes through the perforated disc frame (13). The lower end of the eccentric rotating main shaft (18) is hinged to the eccentric rotating cutter head (15). The upper ends of the four eccentric rotating secondary shafts (14) are hinged to the perforated disc frame (13), and the lower ends are hinged to the eccentric rotating cutter head (15). The first set of spiral cutters (16) and the second set of spiral cutters (17) are both fixedly mounted perpendicular to the lower end of the eccentric rotating cutter head (15). The circular array diameter, thread depth and diameter of the first set of spiral cutters (16) are greater than those of the second set of spiral cutters (17), and the length is less than that of the second set of spiral cutters (17).

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