Agricultural implement levelling platform

Abstract

The application provides a leveling platform for agricultural working tools, and specifically comprises a deflection working mechanism and a rotary lifting mechanism; the deflection working mechanism comprises a chassis fixing platform, a spherical hinge, a spherical hinge fine adjustment base, an extension mechanism and a working tool mounting platform, the spherical hinge can be adjusted and mounted at a height through the spherical hinge fine adjustment base; the rotary lifting mechanism comprises a rotary lifting lower platform, a central rotary rod, an electric push rod, a slip ring, a rhombic lifting mechanism and a rotary lifting upper platform, and the rotary lifting upper platform and the rotary lifting lower platform are both circular platforms. The leveling mode of rotation and lifting effectively prevents the occurrence of "virtual legs", avoids the constraint effect of the different extension amounts of the supporting legs on the platform deformation during the leveling process, and avoids the mutual coupling of the supporting legs due to the partial adjustment of the supporting legs. Compared with the traditional four-point leveling mode, the leveling mode reduces the components that need to be controlled and reduces the control requirements.

Description

Technical Field

[0001] The invention belongs to the field of agricultural machinery and relates to a leveling platform, in particular to a device which is installed on an agricultural chassis and can be used to level an operating tool. Background Art

[0002] my country is a large agricultural country. The degree of agricultural mechanization affects the modernization level of my country's agriculture. Traditional manual leveling operations cannot adapt to the rapid development of agricultural machinery automation and intelligence. Agricultural machinery automatic leveling technology effectively solves the problems of poor quality and low efficiency of agricultural machinery operations caused by complex operating environments such as uneven land, complex terrain, and tilt. It is used in agricultural mechanization operation scenes such as mountains, orchards, paddy fields, and cultivated land. With the rapid development of agricultural machinery intelligence, automatic leveling technology has gradually been applied to all aspects of the agricultural machinery field. The automatic leveling technology of mountain agricultural machinery has become an inevitable requirement for current agricultural mechanization and automation. The assembly of automatic leveling, real-time monitoring and other intelligent technologies has significantly improved agricultural mechanization. In order to increase the accuracy and unmanned degree of production, the automatic leveling technology of agricultural machinery has become an important research content for the future development of intelligent agricultural machinery. It can be foreseen that the development space of the automatic leveling technology of agricultural machinery is broad. At present, the four-point leveling method adopts four legs. Because of the need to consider the "virtual legs" and avoid the different extension and contraction amounts of the legs during the leveling process, the platform deformation is caused by the constraint effect on the platform, and the mutual coupling of the legs when the legs are adjusted separately, the leveling algorithm is complicated and more leveling time is required. Therefore, the present invention designs a platform for leveling the working implements by rotating and lifting movements, which avoids the above problems from the structural point of view, and can adjust the working parts conveniently and quickly to improve the working state of the agricultural machinery. Summary of the Invention

[0003] The present invention provides a device installed on a chassis and capable of leveling a work tool, so as to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A leveling platform for agricultural implements includes a deflection working mechanism and a rotary lifting mechanism; the deflection working mechanism includes a chassis fixing platform, a ball hinge, a ball hinge fine-tuning base, a telescopic mechanism, and an implement mounting platform; a motor is installed at the lower part of the chassis fixing platform, and the motor speed is decelerated by a reducer and then output to the pinion; the telescopic mechanism includes a telescopic first section rod, a telescopic second section rod, and a telescopic third section rod; one end of the telescopic mechanism is hinged to the implement mounting platform through a cotter pin and a retaining spring, and the other end is connected to the ball hinge; the rotary lifting mechanism includes a rotary lifting lower platform, a central rotating rod, an electric push rod, a slip ring, a diamond lifting mechanism, a rotary lifting mechanism Upper platform; the diamond lifting mechanism includes a first lifting link, a second lifting link, and a third lifting link, and the links are hinged with each other through cotter pins and retaining springs; the slip ring is installed on the rotating lifting lower platform through the slip ring tray; one end of the transmission link is connected to the electric push rod through a long pin and a retaining spring, and the other end is connected to the diamond lifting mechanism through a cotter pin and a retaining spring; the electric push rod is fixed on the rotating lifting upper platform, and the two ends of the diamond lifting mechanism are respectively hinged with the rotating lifting upper platform and the rotating lifting lower platform through cotter pins and retaining springs; one end of the central rotating rod is fixed on the rotating lifting upper platform, and the other end is hinged to the rotating mechanism lower platform through a cotter pin and a retaining spring.

[0006] As a preferred technical solution of the present invention, there are two telescopic mechanisms, one end of the telescopic mechanism is hinged to the work tool mounting platform, and the hinge position is symmetrical about the center of the toothless bearing, and the other end of the telescopic mechanism is connected to the ball hinge; there are two ball hinges, the installation position of the ball hinge is symmetrical about the center of the toothless bearing, and the center of the ball hinge, the rotation axis of the center rotating rod and the rotating lifting lower platform, and the rotation axis of the diamond lifting mechanism and the rotating lifting lower platform are in the same plane.

[0007] As a preferred technical solution of the present invention, there are two ball hinge fine-tuning bases, each of which includes a fine-tuning bolt, a pair of fine-tuning plates, and a nut. One fine-tuning plate is fixed to the chassis fixing platform by a nut and a fine-tuning bolt, and the other fine-tuning plate is fine-tuned and fixed by a fine-tuning bolt and a nut. The installation position of the ball hinge fine-tuning base is symmetrical about the center of the toothed bearing.

[0008] As a preferred technical solution of the present invention, the rotating lifting upper platform and the rotating lifting lower platform are both circular platforms, and there is a slide groove on the rotating lifting upper platform; the rotating lifting upper platform is connected to the rotating lifting lower platform through a diamond lifting mechanism and a central rotating rod; the diamond lifting mechanism is connected to the slide groove and the transmission connecting rod on the rotating lifting upper platform through a cotter pin and a retaining spring, thereby limiting the degree of freedom of the diamond lifting mechanism and the transmission connecting rod.

[0009] As a preferred technical solution of the present invention, there are two electric push rods and two central rotating rods, and one end of the electric push rods and the central rotating rods are evenly fixed on the rotating lifting upper platform. Each electric push rod is equipped with a pair of diamond lifting mechanisms, and they are symmetrically arranged on both sides of the electric push rod. One end of the diamond lifting mechanism is hinged to the rotating lifting upper platform, and the other ends of the two pairs of diamond lifting mechanisms and the central rotating rods are evenly hinged to the rotating lifting lower platform. The rotation axes of the diamond lifting mechanisms, the central rotating rods and the rotating lifting lower platform are parallel and coplanar at the hinges.

[0010] As a preferred technical solution of the present invention, the chassis fixing platform, the work tool mounting platform and the rotary lifting mechanism of the deflection working mechanism are connected through toothed bearings and toothless bearings respectively. The chassis fixing platform is fixed to the inner ring of the toothed bearing by bolts, the work tool mounting platform is fixed to the outer ring of the toothless bearing by bolts, the rotary lifting lower platform is fixed to the outer ring of the toothed bearing by bolts, and the rotary lifting upper platform is fixed to the inner ring of the toothless bearing by bolts.

[0011] Beneficial effects of the present invention:

[0012] The motor drives the small gear to rotate, thereby driving the outer ring of the toothed bearing to rotate, thereby driving the entire rotary lifting mechanism to rotate. At the same time, the two electric push rods move at equal speeds and in opposite directions to drive the diamond lifting mechanism to move, and the rotation and lifting movements are used to ensure that the operating tool installation platform is in a horizontal position; the deflection working mechanism is connected to the rotary lifting mechanism through toothed bearings and toothless bearings, and the operating tool installation platform remains horizontal under the movement of the rotary lifting mechanism. The operating tool installation platform is connected to the chassis fixed platform through a telescopic mechanism, a ball hinge, and a ball hinge fine-tuning base, so that the operating tool platform can only deflect to reach a horizontal position, not It can rotate; by adjusting the ball hinge fine-tuning base, the ball center of the ball hinge, the central rotating rod and the rotating axis of the chassis fixed platform, the diamond lifting mechanism and the rotating axis of the chassis fixed platform are made to be in the same plane, so that the movement of each mechanism will not interfere with each other; the present invention uses a leveling method of rotation and lifting to effectively prevent the occurrence of "virtual legs", avoids the constraint effect of the different extension and contraction amounts of the legs during the leveling process on the platform causing deformation of the platform, and avoids the mutual coupling of the legs due to the partial adjustment of the legs. Compared with the traditional four-point leveling method, this leveling method reduces the components that need to be controlled and reduces the control requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the toothless bearing structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the toothed bearing structure of the present invention;

[0016] Figure 4 It is a schematic structural diagram of the deflection working mechanism of the present invention;

[0017] Figure 5 This is a schematic diagram of the structure of the ball hinge fine-adjustment base of the present invention;

[0018] Figure 6 It is a schematic structural diagram of the telescopic mechanism of the present invention;

[0019] Figure 7 It is a structural schematic diagram of the rotary lifting mechanism of the present invention;

[0020] Figure 8 It is a schematic structural diagram of the diamond-shaped lifting mechanism of the present invention.

[0021] Notes on the attached drawings:

[0022] 1. Motor; 2. Reducer; 3. Chassis fixing platform; 4. Pinion; 5. Ball hinge; 6. Telescopic third section; 7. Telescopic second section; 8. Telescopic first section; 9. Work tool mounting platform; 10. Bolt; 11. Rotating lifting upper platform; 12. Rotating lifting lower platform; 13. Gearless bearing outer ring; 14. Gearless bearing inner ring; 15. Geared bearing outer ring; 16. Geared bearing inner ring; 17. Fine-tuning bolt; 18. Nut; 19. Fine-tuning plate; 20. Center rotating rod; 21. Circlip; 22. Split pin; 23. Lifting first link; 24. Lifting second link; 25. Third link; 26. Slip ring tray; 27. Slip ring; 28. Electric push rod; 29. ​​Long pin; 30. Transmission connecting rod. Specific implementation plan

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and cannot be understood as limiting the specific scope of protection of the present invention.

[0024] See also Figures 1-8The present invention provides a device installed on a chassis for leveling a work tool, comprising a deflection working mechanism and a rotary lifting mechanism; the deflection working mechanism comprises a chassis fixing platform 3, a ball hinge 5, a ball hinge fine-tuning base, a telescopic mechanism, and a work tool mounting platform 9; a motor 1 is installed at the lower part of the chassis fixing platform 3, and the speed of the motor 1 is decelerated by a reducer 2 and then output to a pinion 4; the telescopic mechanism comprises a telescopic first section rod 8, a telescopic second section rod 7, and a telescopic third section rod 6; one end of the telescopic mechanism is hinged to the work tool mounting platform 9 through a cotter pin 22 and a retaining spring 21, and the other end is connected to the ball hinge 5; the rotary lifting mechanism comprises a rotary lifting lower platform 12, a central rotating rod 20, an electric push rod 28, a slip ring 27, a diamond lifting mechanism, and a rotary lifting upper platform 11 ; The diamond lifting mechanism includes a first lifting link 23, a second lifting link 24, and a third lifting link 25, and the links are hinged to each other through a cotter pin 22 and a retaining spring 21; the slip ring 27 is installed on the rotating lifting lower platform 12 through a slip ring tray 26; one end of the transmission link 30 is connected to the electric push rod 28 through a long pin 29 and a retaining spring 21, and the other end is connected to the diamond lifting mechanism through a cotter pin 22 and a retaining spring 21; the electric push rod 28 is fixed on the rotating lifting upper platform 11, and the two ends of the diamond lifting mechanism are hinged to the rotating lifting upper platform 11 and the rotating lifting lower platform 12 respectively through a cotter pin 22 and a retaining spring 21; one end of the central rotating rod 20 is fixed on the rotating lifting upper platform 11, and the other end is hinged to the rotating mechanism lower platform 12 through a cotter pin 22 and a retaining spring 21.

[0025] Furthermore, there are two telescopic mechanisms, one end of which is hinged to the work tool mounting platform 9, and the hinge position is symmetrical about the center of the toothless bearing, and the other end of the telescopic mechanism is connected to the ball hinge 5; there are two ball hinges 5, the installation position of the ball hinge 5 is symmetrical about the center of the toothless bearing, and the center of the ball hinge 5, the rotation axis of the center rotating rod 20 and the rotating lifting lower platform 12, and the rotation axis of the diamond lifting mechanism and the rotating lifting lower platform 12 are in the same plane.

[0026] Furthermore, there are two ball hinge fine-tuning bases, each of which includes a fine-tuning bolt 17, a pair of fine-tuning plates 19, and a nut 18. One fine-tuning plate 19 is fixed to the chassis fixing platform 3 through the nut 18 and the fine-tuning bolt 17, and the other fine-tuning plate 19 is fine-tuned and fixed through the fine-tuning bolt 17 and the nut 18; the installation position of the ball hinge fine-tuning base is symmetrical about the center of the toothed bearing.

[0027] Furthermore, the rotating lifting upper platform 11 and the rotating lifting lower platform 12 are both circular platforms, and there is a slide groove on the rotating lifting upper platform 11; the rotating lifting upper platform 11 is connected to the rotating lifting lower platform 12 through a diamond lifting mechanism and a central rotating rod 20, and the diamond lifting mechanism is connected to the slide groove and the transmission connecting rod 30 on the rotating lifting upper platform 11 through a cotter pin 22 and a retaining spring 21, thereby limiting the degree of freedom of the diamond lifting mechanism and the transmission connecting rod 30.

[0028] Furthermore, there are two electric push rods 28 and two central rotating rods 20, and one end of the electric push rods 28 and the central rotating rods 20 are evenly and alternately fixed on the rotating lifting upper platform 11. Each electric push rod 28 is equipped with a pair of diamond lifting mechanisms, and they are symmetrically arranged on both sides of the electric push rod 28. One end of the diamond lifting mechanism is hinged to the rotating lifting upper platform 11, and the other ends of the two pairs of diamond lifting mechanisms and the central rotating rods 20 are evenly and alternately hinged to the rotating lifting lower platform 12. The rotation axes at the hinges of the diamond lifting mechanisms, the central rotating rods 20 and the rotating lifting lower platform 12 are parallel and coplanar.

[0029] Furthermore, the chassis fixing platform 3, the working tool mounting platform 9 and the rotary lifting mechanism of the deflection working mechanism are connected through toothed bearings and toothless bearings respectively. The chassis fixing platform 3 is fixed to the toothed bearing inner ring 16 by bolts 10, the working tool mounting platform 9 is fixed to the toothless bearing outer ring 13 by bolts 10, the rotary lifting lower platform 12 is fixed to the toothed bearing outer ring 15 by bolts 10, and the rotary lifting upper platform 11 is fixed to the toothless bearing inner ring 14 by bolts 10.

[0030] The working principle of the present invention is: during installation, by adjusting the nut 18, the fine-tuning plate 19 is moved on the fine-tuning bolt 17, so as to adjust the installation height of the ball hinge 5, so that the ball center of the ball hinge 5, the central rotating rod 20 and the rotating axis of the chassis fixing platform 3, the diamond lifting mechanism and the rotating axis of the chassis fixing platform 3 are in the same plane, and then the working tool is installed on the working tool mounting platform 9; during operation, when the agricultural chassis tilts, the power output by the motor 1 is transmitted to the pinion 4 through the reducer 2, and the pinion 4 drives the outer ring of the toothed bearing 15 to rotate, so that the entire rotary lifting mechanism rotates, so that the working tool mounting platform 9 deflects in all directions with the rotary lifting upper platform 11, and at the same time, the telescopic movement of the electric push rod 28 fixed on the rotary lifting upper platform 11 is controlled by the long pin 29 and the transmission connecting rod 30 make the diamond-shaped lifting mechanism move. The diamond-shaped lifting mechanism can only perform lifting and lowering movements and will not rotate. While the diamond-shaped mechanism is moving, the rotating lifting upper platform 11 can only rotate around the rotating axis at the hinge of the central rotating rod 20 and the rotating lifting lower platform 12. Under the combined action of the rotation of the rotating lifting mechanism and the telescopic movement of the electric push rod 28, the rotating lifting upper platform 11 reaches a horizontal position, thereby making the work tool mounting platform 3 horizontal, and at this time, the rotation center line of the toothless bearing passes through the center of the circle of the rotating lifting lower platform 12; the telescopic mechanism also moves while the rotating lifting mechanism moves, so that the work tool mounting platform 9 does not rotate relative to the axis of the toothless bearing while deflecting; the slip ring 27 can prevent the wires of the electric push rod from being entangled.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A leveling platform for agricultural implements, characterized in that: The invention comprises a deflection working mechanism, a telescopic mechanism, a rotation lifting mechanism, a diamond lifting mechanism, a slip ring (27), a transmission connecting rod (30), an electric push rod (28), and a central rotating rod (20); the deflection working mechanism comprises a chassis fixing platform (3), a ball hinge (5), a ball hinge fine-tuning base, a telescopic mechanism, and an operating tool mounting platform (9); a motor (1) is installed at the lower part of the chassis fixing platform (3); the speed of the motor (1) is reduced by a reducer (2) and then output to a pinion (4); the telescopic mechanism comprises a telescopic first section rod (8), a telescopic second section rod (7), and a telescopic third section rod (6); one end of the telescopic mechanism is hinged to the operating tool mounting platform (9) through a cotter pin (22) and a retaining spring (21); the other end of the telescopic mechanism is hinged to the operating tool mounting platform (9) through a cotter pin (22) and a retaining spring (21); One end is connected to the ball hinge (5), and there are two telescopic mechanisms. One end of the telescopic mechanism is hinged to the operating tool installation platform (9), and the hinge position is symmetrical about the center of the toothless bearing. The other end of the telescopic mechanism is connected to the ball hinge (5); there are two ball hinges (5), and the installation position of the ball hinge (5) is symmetrical about the center of the toothless bearing, and the ball center of the ball hinge (5), the rotation axis of the central rotating rod (20) and the rotating lifting lower platform (12), and the rotation axis of the rhombus lifting mechanism and the rotating lifting lower platform (12) are in the same plane; the rotating lifting mechanism includes the rotating lifting lower platform (12), the central rotating rod (20), the electric push rod (28), the slip ring (27), the rhombus lifting mechanism, and the rotating lifting upper platform. (11); the diamond-shaped lifting mechanism includes a first lifting link (23), a second lifting link (24), and a third lifting link (25), and the links are hinged with each other through a cotter pin (22) and a retaining ring (21); the slip ring (27) is installed on the rotating lifting lower platform (12) through a slip ring tray (26); the rotating lifting upper platform (11) and the rotating lifting lower platform (12) are both circular platforms, and a slide groove is provided on the rotating lifting upper platform (11); the rotating lifting upper platform (11) is connected to the rotating lifting lower platform (12) through the diamond-shaped lifting mechanism and the central rotating rod (20), and the diamond-shaped lifting mechanism is connected to the slide groove and the transmission link (30) on the rotating lifting upper platform (11) through the cotter pin (22) and the retaining ring (21). The invention relates to a method for realizing a plurality of rotational lifting mechanisms, wherein the plurality of rotational lifting mechanisms are connected to each other by a plurality of springs (21), thereby limiting the degree of freedom of the diamond lifting mechanism and the transmission connecting rod (30); one end of the transmission connecting rod (30) is connected to the electric push rod (28) through a long pin (29) and a retaining spring (21), and the other end is connected to the diamond lifting mechanism through a cotter pin (22) and a retaining spring (21); the electric push rod (28) is fixed on the rotating lifting upper platform (11), and the two ends of the diamond lifting mechanism are respectively hinged to the rotating lifting upper platform (11) and the rotating lifting lower platform (12) through a cotter pin (22) and a retaining spring (21); one end of the central rotating rod (20) is fixed on the rotating lifting upper platform (11), and the other end is hinged to the rotating mechanism lower platform (12) through a cotter pin (22) and a retaining spring (21).

2. The agricultural implement leveling platform according to claim 1, characterized in that: There are two ball hinge fine-tuning bases, each of which comprises a fine-tuning bolt (17), a pair of fine-tuning plates (19), and a nut (18). One fine-tuning plate (19) is fixed to a chassis fixing platform (3) through the nut (18) and the fine-tuning bolt (17), and the other fine-tuning plate (19) is fine-tuned and fixed through the fine-tuning bolt (17) and the nut (18). The installation position of the ball hinge fine-tuning base is symmetrical about the center of the toothed bearing.

3. The agricultural implement leveling platform according to claim 1, characterized in that: There are two electric push rods (28) and two central rotating rods (20). One end of the electric push rods (28) and the central rotating rods (20) are evenly distributed on the rotating lifting upper platform (11). Each electric push rod (28) is equipped with a pair of diamond-shaped lifting mechanisms, which are symmetrically arranged on both sides of the electric push rod (28). One end of the diamond-shaped lifting mechanism is hinged to the rotating lifting upper platform (11). The other ends of the two pairs of diamond-shaped lifting mechanisms and the central rotating rods (20) are evenly and alternately hinged to the rotating lifting lower platform (12). The rotation axes of the diamond-shaped lifting mechanism, the central rotating rods (20) and the rotating lifting lower platform (12) are parallel and coplanar.

4. The agricultural implement leveling platform according to claim 1, characterized in that: The chassis fixing platform (3) and the working tool installation platform (9) of the deflection working mechanism are connected to the rotary lifting mechanism through toothed bearings and toothless bearings respectively. The chassis fixing platform (3) is fixed to the inner ring (16) of the toothed bearing through bolts (10), the working tool installation platform (9) is fixed to the outer ring (13) of the toothless bearing through bolts (10), the rotary lifting lower platform (12) is fixed to the outer ring (15) of the toothed bearing through bolts (10), and the rotary lifting upper platform (11) is fixed to the inner ring (14) of the toothless bearing through bolts (10).

Images