A farming machine

Abstract

The present invention relates to an agricultural tiller; it comprises a walking part, a rotary tillage mechanism, a suspension mechanism and a level detection mechanism, the suspension mechanism comprises a suspension frame assembly and a mount assembly, the suspension frame assembly comprises an upper cantilever, a lower cantilever, a mount and a driving cylinder, the ends of the upper cantilever and the lower cantilever on the same side are hinged to the mount; one end of the driving cylinder acts on the lower cantilever to drive the upper cantilever, the lower cantilever and the mount to be linked, thereby lifting or lowering the mount assembly; an axial hole for connecting different types of agricultural implements is provided at the bottom end of the mount assembly, the mount assembly is detachably connected to the suspension frame assembly, the other ends of the upper cantilever and the lower cantilever are hinged to the walking part, and the other end of the driving cylinder is also hinged to the walking part; the mount assembly is hung and fixed on the suspension frame assembly, and the rotary tillage mechanism is connected to the mount assembly through an axle; it is suitable for use with a variety of different types of agricultural implements and can automatically adjust the level of its rotary tillage mechanism.

Description

Technical Field

[0001] The present invention relates to the field of farming technology, and in particular to a farming machine. Background Art

[0002] In modern agricultural production, ecological agriculture is increasingly emphasized, and conservation tillage technology just meets this requirement. Conservation tillage refers to a sustainable agricultural technology that reduces farmland soil erosion, protects farmland ecological environment, and achieves coordinated development of ecological, economic and social benefits through comprehensive supporting measures such as less tillage, no tillage, surface micro-topography transformation technology, surface covering, and reasonable planting. Its core technologies include less tillage, no tillage, gentle slope equal height tillage, furrow and ridge tillage, stubble cover tillage, straw cover and other farmland soil surface tillage technologies and their supporting special machines.

[0003] In view of the unevenness of the field surface, the left and right wheels of the traveling part may not be on the same horizontal plane when the traveling part is working in the field, causing the body to tilt. The three-point suspension rotary tiller commonly used on the market will tilt with the tilt of the traveling part. For example, the "a rotary tillage and deep tillage fertilization machine" with patent number CN108605450A includes a frame, a fertilizer discharge mechanism, a ground wheel transmission system, a deep tillage mechanism, and a rotary tillage mechanism. The deep tillage shovel of the present invention is inserted into the ground surface to deep till the farmland; when the tractor moves, it drives the ground wheel to rotate, and the active sprocket on the ground wheel drives the driven sprocket on the fertilizer discharge shaft through the chain, so that the fertilizer discharge shaft rotates to discharge fertilizer, and the fertilizer is transported to the two ends of the fertilizer discharge barrel through the reverse two-stage spiral blade rotation, falls into the conical discharge funnel, and then enters the fertilizer pipe on the deep tillage shovel through the fertilizer pipe connection, and then is applied to the deep tillage farmland to complete the rotary tillage and deep tillage fertilization operation. However, once the rotary tiller of this scheme is tilted, the rotary tillage performance indicators such as tillage depth and flatness after tillage will be seriously affected, resulting in poor rotary tillage effect. In addition, once the current agricultural tillage machine is connected and fixed to an agricultural tool, its function is fixed and relatively single. For example, after the walking part is connected and fixed to the weeding mechanism, the machine is only used for weeding. Therefore, it is of great significance to develop an agricultural tillage machine that can automatically adjust the level and can be used with a variety of different types of agricultural machinery. Summary of the invention

[0004] The object of the present invention is to provide an agricultural tilling machine which is suitable for use with a variety of different types of agricultural implements and can automatically adjust the level of its rotary tilling mechanism.

[0005] To achieve the above-mentioned purpose, the main technical solution of the present invention is an agricultural machine, characterized in that it includes a walking part, a rotary tillage mechanism, a suspension mechanism and a horizontal detection mechanism, the suspension mechanism includes a suspension frame assembly and a mount assembly, the suspension frame assembly includes an upper cantilever, a lower cantilever, a mount and a driving cylinder, the ends of the upper cantilever and the lower cantilever on the same side are hinged to the mount; one end of the driving cylinder acts on the lower cantilever to drive the upper cantilever, the lower cantilever and the mount to be linked, thereby lifting or lowering the mount assembly; the bottom end of the mount assembly is provided with an axial hole for connecting different types of agricultural implements, the mount assembly is detachably connected to the suspension frame assembly, the other ends of the upper cantilever and the lower cantilever are hinged to the walking part, and the other end of the driving cylinder is also hinged to the walking part; the mount assembly is hung and fixed on the suspension frame assembly On the upper part, the rotary tillage mechanism is connected to the mount assembly through an axle; the horizontal detection mechanism includes a rotating arm part movably connected to the side wall of the mount assembly and a horizontal detection device, and the rotating arm part can rotate relative to the mount around the movable connection point; the horizontal detection device is horizontally and fixedly installed on the wall surface of the rotating arm part and is used to monitor whether the rotating arm part is offset; a gear assembly is provided on the side wall of the mount, and the rotating arm part is provided with an arc-shaped tooth segment meshing with the gear assembly, and the center of the arc-shaped tooth segment overlaps with the movable connection point; the horizontal detection device and the gear assembly are both connected to the controller signal, and two ends of the rotating arm part symmetrical along the central axis are respectively provided with a connecting piece for connecting to the rotary tillage mechanism; through the signal feedback of the horizontal detection device, the gear assembly is started to drive the rotating arm part and the arc-shaped tooth segment to adjust and rotate to keep the rotary tillage mechanism level.

[0006] In some examples, the bottom end of the mount assembly and the bottom end of the rotating arm are sleeved on the shaft, and the rotating arm can rotate axially relative to the mount around its shaft.

[0007] In some instances, the rotating arm member is a fan-shaped structure as a whole, with an air avoidance area in the middle, and the gear assembly is located in the air avoidance area; a hanging ear hole is provided on both sides of the top of the rotating arm member, and the hanging ear hole is used to hang a fixed connecting member, and the connecting member is a tension spring, one end of the tension spring is set and hung on the rotary tiller, and the other end is hung in the hanging ear hole, so that the two tension springs are symmetrical with each other with the central axis as the reference.

[0008] In some examples, the gear assembly includes a gear set and a drive motor, the gear set includes a driving gear and a driven gear, the output end of the drive motor can act on the driving gear and drive the driving gear to rotate, the driving gear is meshed with the driven gear, and the driven gear is meshed with the arc-shaped tooth segment; the driven gear includes a main tooth and a moving tooth that are coaxially arranged, the main tooth and the moving tooth rotate synchronously, the main tooth is meshed with the driving gear, and the moving tooth is meshed with the arc-shaped tooth segment.

[0009] In some instances, the horizontal detection device includes a horizontal controller, a support plate, a mounting plate and a U-shaped leaf spring. The support plate is connected and fixed to the side wall of the rotating arm member, the support plate end of the mounting plate is connected through the U-shaped leaf spring, and the horizontal controller is installed on the mounting plate.

[0010] In some examples, the driving motor is parallel to the wall surface of the mount, and the driving gear is sleeved on the output end to drive the driving gear to rotate.

[0011] In some examples, a hanging groove is provided at the top of the hanger, a transverse axis is provided at the top of the hanger seat, the transverse axis can be embedded in the hanging groove, and the bottom of the hanger seat is connected and fixed to the bottom of the hanger.

[0012] In some instances, a C-shaped opening is provided at the bottom of the bracket, and a clamping column for being inserted into the C-shaped opening is provided at the bottom end of the bracket; a rotatable hook is provided on each side wall of the bracket at the C-shaped opening, and the clamping column can be locked or unlocked by rotating and opening the hook.

[0013] In some examples, the ends of the lower cantilever are movably connected to the side walls of the bracket through movable shafts, and a locking member is provided at both ends of the inner side wall of the hanger assembly at transverse symmetry, and the locking member can be sleeved on the movable shaft.

[0014] In some examples, the lower cantilever includes two arm rods and a cross bar disposed between the two arm rods, a linkage piece is sleeved on the middle portion of the cross bar, and the output end of the driving cylinder is connected to the linkage piece.

[0015] The present invention adopts the above technical solution, and achieves the following effects: (1) The horizontal detection mechanism monitors whether the rotary tillage mechanism is in a horizontal state, and timely starts the gear assembly to adjust the rotation of the rotary tillage mechanism to keep the rotary tillage mechanism always in a horizontal state. (2) The mount assembly is detachably connected to the suspension frame assembly, and different types of agricultural implements only need to be provided with an axle body, and the axle body is connected to the axle hole of the mount assembly to replace different types of agricultural implements, thereby changing the different functions of the agricultural machine, such as weeding, farming, sowing, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an embodiment of the present invention that is not arranged on the walking part.

[0017] Figure 2 yes Figure 1 A schematic diagram of a structural decomposition of another embodiment from another perspective,

[0018] Figure 3 yes Figure 1 The schematic diagram of the suspension mechanism structure disposed on the upper cantilever of the embodiment is shown in FIG.

[0019] Figure 4 yes Figure 3 The schematic diagram of the suspension mechanism structure of the embodiment is as follows:

[0020] Figure 5 yes Figure 1 The horizontal detection mechanism provided on the mounting bracket of the embodiment,

[0021] Figure 6 yes Figure 5 Another perspective of the horizontal detection mechanism of the embodiment,

[0022] Figure 7 yes Figure 5 An exploded view of the level detection mechanism of the embodiment,

[0023] In the figure: a rotating arm member 1, a mounting seat assembly 2, a tension spring 3, a horizontal controller 4, a mounting plate 5, a U-shaped leaf spring 6, a support plate 7, a driving motor 8, a driven gear 9, a shaft 10, a clearance area 11, a hanging ear hole 12, an arc-shaped tooth segment 13, an upper cantilever 14, a lower cantilever 15, a driving cylinder 16, a suspension frame assembly 17, a suspension groove 18, a hook 19, a movable shaft 20, a horizontal shaft 21, a clamping column 22, a locking member 23, an axis hole 24, a C-shaped opening 25, a main tooth 91, a movable tooth 92, and a limiting portion 131. DETAILED DESCRIPTION

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] Embodiment 1:

[0028] Referring to the accompanying drawings of the present invention Figures 1 to 7 As shown, according to a preferred embodiment of the present invention, the agricultural machine of this embodiment is used for soil operations, which can make the soil finely broken and the soil and fertilizer mixed evenly. The agricultural machine includes a walking part, a rotary tillage mechanism, a suspension mechanism and a horizontal detection mechanism, wherein the walking part mainly includes a vehicle body, a steering wheel mechanism and a driving wheel mechanism, etc., and the structure of the walking part can be shown in the technical solution previously applied by the applicant if omitted; the suspension mechanism includes a suspension frame assembly 17 and a hanger assembly 2, and the suspension frame assembly 17 includes an upper cantilever 14, a lower cantilever 15, a hanger and a driving cylinder 16, and the ends on the same side of the upper cantilever 14 and the lower cantilever 15 are both hinged to the hanger; the driving cylinder 1 One end of the cylinder 16 acts on the lower cantilever 15, driving the upper cantilever 14, the lower cantilever 15 and the bracket to move in a linkage manner, thereby lifting or lowering the mount assembly 2; the bottom end of the mount assembly 2 is provided with an axial hole 24 for connecting different types of agricultural implements, the mount assembly 2 is detachably connected to the suspension bracket assembly 17, the other ends of the upper cantilever 14 and the lower cantilever 15 are both hinged to the walking part, and the other end of the driving cylinder 16 is also hinged to the walking part; the mount assembly 2 is hung and fixed on the suspension bracket assembly 17, and the rotary tillage mechanism is connected to the suspension bracket assembly 17 by a shaft. The body 10 is connected to the mount assembly 2; the horizontal detection mechanism includes a rotating arm member 1 movably connected to the side wall of the mount assembly 2 and a horizontal detection device, and the rotating arm member 1 can rotate relative to the mount around the movable connection point; the horizontal detection device is horizontally fixedly installed on the wall surface of the rotating arm member 1 and is used to monitor whether the rotating arm member 1 is offset; a toothed assembly is provided on the side wall of the mount, and the rotating arm member 1 is provided with an arc-shaped tooth segment 13 meshing with the toothed assembly, and the center of the arc-shaped tooth segment 13 overlaps with the movable connection point; the horizontal detection device and the toothed assembly are both connected to the controller signal, and a connecting member for connecting to the rotary tillage mechanism is respectively provided at both ends of the rotating arm member 1 symmetrical along the central axis; through the signal feedback of the horizontal detection device, the toothed assembly is started to drive the rotating arm member 1 and the arc-shaped tooth segment 13 to adjust the rotation to keep the rotary tillage mechanism level; wherein, the main innovation of the technical solution is: on the one hand, the horizontal detection mechanism is used to monitor whether the rotary tillage mechanism is in a horizontal state, and the toothed assembly is started in time to adjust the rotation of the rotary tillage mechanism to keep the rotary tillage mechanism always in a horizontal state. On the other hand, the mount assembly 2 is detachably connected to the suspension frame assembly 17. It only requires that different types of agricultural implements be provided with an axle body 10. By docking the axle body 10 with the axle hole 24 of the mount assembly 2, different types of agricultural implements can be replaced, thereby changing the different functions of the agricultural machine, such as weeding, farming, sowing, etc.

[0029] Specifically, the bottom end of the mount assembly 2 and the bottom end of the rotating arm 1 are sleeved on the same shaft 10, and the shaft 10 is the shaft 10 mentioned above for docking the rotary tillage mechanism with the mount, and the rotating arm 1 can rotate relative to the mount axially around its shaft 10, and the mount assembly 2 includes a mount; the rotating arm 1 is a fan-shaped structure as a whole, and a clearance area 11 is provided in the middle, and the gear assembly is located in the clearance area 11; a hanging ear hole 12 is provided on both sides of the top of the rotating arm 1, and the hanging ear hole 12 is used to hang a fixed connecting piece, wherein the advantage of setting the clearance area 11 is that The purpose is to install the gear assembly in this area, reduce the occupied space, and reasonably design the connection relationship between the rotating arm member 1 and the hanging seat assembly 2. In this embodiment, the connecting member is a tension spring 3, one end of the tension spring 3 is arranged to be hung on the rotary tiller, and the other end is hung in the hanging ear hole 12, so that the two tension springs 3 are symmetrical with each other based on the central axis. The purpose of using the tension spring 3 is to start the buffer when the rotary tiller mechanism swings left and right. Most of the existing three-point rotary tillers are connected by a connecting rod. If a connecting rod is used, the inertia during swinging is large, which may damage the connection. The gear assembly includes a gear assembly and a driving motor 8, and the gear set includes a driving gear and a driven gear 9. The output end of the driving motor 8 can act on the driving gear and drive the driving gear to rotate. The driving gear is meshed with the driven gear 9, and the driven gear 9 is meshed with the arc-shaped tooth segment 13. When the horizontal detection device is tilted and detects that the rotary tillage mechanism is not in a horizontal state, its signal is transmitted to the controller, and the controller feeds back to the driving motor 8. The driving motor 8 rotates and drives the gear assembly to rotate. Finally, the rotation of the rotating arm 1 is adjusted by meshing and rotating the gear assembly and the arc-shaped tooth segment 13, and the tension springs 3 on both sides are pulled to restore the rotary tillage mechanism to a horizontal state.

[0030] The driven gear 9 can be implemented as a gear scheme, but in the present embodiment, the driven gear 9 includes a main tooth 91 and a movable tooth 92 which are coaxially arranged. The main tooth 91 and the movable tooth 92 rotate synchronously. The main tooth 91 is meshed with the driving tooth 92, and the movable tooth 92 is meshed with the arc-shaped tooth segment 13. The diameter of the main tooth 91 is greater than that of the movable tooth 92. The purpose of such design is that the main tooth 91 has a large diameter and a large rotation amplitude, which cannot be adjusted more accurately. Therefore, such a setting can further accurately adjust the rotation size compared with only one driven gear 9.

[0031] The horizontal detection device includes a horizontal controller 4, a support plate 7, a mounting plate 5 and a U-shaped leaf spring 6. The support plate 7 is connected and fixed to the side wall of the rotating arm member 1. The end of the support plate 7 of the mounting plate 5 is connected through the U-shaped leaf spring 6. The horizontal controller 4 is installed on the mounting plate 5. The purpose of setting the U-shaped leaf spring 6 is to enhance the detection sensitivity of the horizontal controller 4. Of course, only the horizontal controller 4 and the mounting plate 5 are needed. The mounting plate 5 is installed to the side wall of the rotating arm member 1, and the horizontal controller 4 is installed in the mounting plate 5.

[0032] The driving motor 8 is parallel to the wall of the mount, and the driving gear is sleeved on the output end to drive the driving gear to rotate. The purpose of setting the driving motor 8 in parallel is also to save space. Of course, in some embodiments, the driving motor 8 can also be vertically arranged in the swing arm member 1. At this time, the driving gear can be directly sleeved on the output shaft of the driving motor 8, and the driving gear and the driven gear 9 are engaged in parallel. This transmission method is relatively simple to install, but because the driving motor 8 is perpendicular to the swing arm member 1, the required space is larger; the transmission method of this embodiment solves the problem of unreasonable space usage, but the output shaft of the driving motor 8 needs to finally drive the driving gear to rotate through a linkage mechanism. The linkage mechanism can generate linkage through conical teeth and the like, which belongs to the prior art and will not be described in detail here.

[0033] Limiting parts 131 are provided at both ends of the arc-shaped tooth segment 13, and the protruding height of the limiting parts 131 is greater than the protruding height of each tooth of the arc-shaped tooth segment 13. The purpose of setting the limiting parts 131 is to prevent the movable tooth 92 from detaching from the arc-shaped tooth segment 13 and limit the maximum swing amplitude of its rotating arm member 1.

[0034] In this embodiment, a hanging groove 18 is provided at the top of the hanger, and a transverse axis 21 is provided at the top of the mount. The transverse axis 21 can be embedded in the hanging groove 18, and the bottom of the mount is connected and fixed to the bottom of the hanger. This embodiment is completed by the hanger and the mount being fixed by docking, and the mount is docked with the rotary tillage mechanism through the shaft body 10. It is not limited to rotary tillers, and the mount can be inserted and fixed through the shaft body 10, so that the same walking part can be formed into agricultural equipment with different functions, and the adaptability is wider. Further, the hanger and the bottom of the mount are connected and fixed in various ways. In this embodiment, a C-shaped opening 25 is provided at the bottom of the hanger, and a clamping column 22 for clamping into the C-shaped opening 25 is provided at the bottom end of the mount. The technical solution can include a solution in which the inlet diameter of the C-shaped opening 25 is slightly smaller than the diameter of the clamping column 22, and the clamping column 22 can be inserted from one side to connect the mount and the hanger. Another solution is that the inlet diameter of the C-shaped opening 25 is greater than or equal to the diameter of the clamping column 22, and the gravity of the rotary tillage mechanism when it is hung is used to make the clamping column 22 directly enter from the inlet and contact the inner cavity wall of the C-shaped opening 25. However, when the bracket is lifted and lowered, the connection stability between the clamping column 22 and the C-shaped opening 25 is not strong. Therefore, in order to further enhance the connection stability, the technical solution is provided with a rotatable hook 19 on both side walls of the bracket at the C-shaped opening 25, and the clamping column 22 can be locked or unlocked by rotating and opening and closing the hook 19. When the clamping column 22 needs to dock with the C-shaped opening 25, its hook 19 is opened to allow the clamping column 22 to move in; after the hook 19 is closed, the clamping column 22 can be locked in the cavity formed by the closure of the hook 19 and the C-shaped opening. The ends of the lower cantilever 15 are movably connected to the side walls of the bracket through movable shafts. A locking piece 23 is provided at both ends of the inner side wall of the hanger assembly 2 at transverse symmetry. The locking piece 23 can be sleeved on the movable shaft body 20. The lower cantilever 15 includes two arm rods and a cross bar arranged between the two arm rods. A linkage piece is sleeved in the middle of the cross bar, and the output end of the driving cylinder 16 is connected to the linkage piece.

[0035] Embodiment two:

[0036] It is also possible to provide an agricultural machine which is not provided with a level detection mechanism and therefore does not have the function of automatically adjusting the rotary tillage mechanism to maintain the level. Instead, it is mainly mounted on a bracket and a mounting seat and the rotary tillage mechanism is connected to the mounting seat via an axle 10, thereby providing an agricultural machine with wide adaptability.

[0037] Implementation three:

[0038] It is also possible to provide an agricultural tilling machine which does not have a wide adaptability and is only provided with a level detection mechanism, which can realize the function of automatically adjusting the rotary tilling mechanism to maintain the level.

[0039] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only for illustrative purposes and are not intended to limit the present invention.

[0040] The purpose of the present invention has been completely and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. An agricultural machine, characterized in that: The invention comprises a walking part, a rotary tillage mechanism, a suspension mechanism and a horizontal detection mechanism, wherein the suspension mechanism comprises a suspension frame assembly (17) and a hanger assembly (2), wherein the suspension frame assembly (17) comprises an upper cantilever (14), a lower cantilever (15), a hanger and a driving cylinder (16), wherein the ends of the upper cantilever (14) and the lower cantilever (15) on the same side are both hinged to the hanger; one end of the driving cylinder (16) acts on the lower cantilever (15) to drive the upper cantilever (14), The lower cantilever (15) and the hanger are linked to each other, thereby lifting or lowering the hanger assembly (2); the bottom end of the hanger assembly (2) is provided with an axial hole (24) for connecting different types of agricultural implements; the hanger assembly (2) is detachably connected to the hanger assembly (17); the other ends of the upper cantilever (14) and the lower cantilever (15) are both hinged to the walking part; the other end of the driving cylinder (16) is also hinged to the walking part; the hanger assembly (2) is hung and fixed on the hanger assembly (17), the rotary tillage mechanism is connected to the mount assembly (2) through an axle (10); the horizontal detection mechanism comprises a rotating arm member (1) movably connected to the side wall of the mount assembly (2) and a horizontal detection device, the rotating arm member (1) being able to rotate relative to the mount around the movable connection point; the horizontal detection device is horizontally and fixedly installed on the wall surface of the rotating arm member (1) and is used to monitor whether the rotating arm member (1) is offset; a gear assembly is provided on the side wall of the mount, the rotating arm member (1) is provided with an arc-shaped tooth segment (13) meshing with the gear assembly, and the center of the arc-shaped tooth segment (13) overlaps with the movable connection point; the horizontal detection device and the gear assembly are both connected to the controller signal, and a connecting member for connecting to the rotary tillage mechanism is respectively provided at both ends of the rotating arm member (1) symmetrical along the central axis; through the signal feedback of the horizontal detection device, the gear assembly is started to drive the rotating arm member (1) and the arc-shaped tooth segment (13) to adjust and rotate to keep the rotary tillage mechanism horizontal; The bottom end of the mounting assembly (2) and the bottom end of the rotating arm member (1) are sleeved on the shaft body (10), and the rotating arm member (1) can rotate axially relative to the mounting assembly around its shaft body (10); The horizontal detection device comprises a horizontal controller (4), a support plate (7), a mounting plate (5) and a U-shaped leaf spring (6); the support plate (7) is connected and fixed to the side wall of the rotating arm member (1); the end of the support plate (7) of the mounting plate (5) is butted against each other via the U-shaped leaf spring (6); and the horizontal controller (4) is mounted on the mounting plate (5); The top of the hanger is provided with a hanging groove (18), the top of the hanger seat is provided with a transverse axis (21), the transverse axis (21) can be embedded in the hanging groove (18), and the bottom of the hanger seat is connected and fixed to the bottom of the hanger; The bottom of the hanger is provided with a C-shaped opening (25), and the bottom end of the hanger is provided with a clamping column (22) for clamping into the C-shaped opening (25); a rotatable hook (19) is respectively provided on the wall surface of both sides of the hanger at the C-shaped opening (25), and the clamping column (22) can be locked or unlocked by rotating and opening and closing the hook (19).

2. The agricultural machine according to claim 1, characterized in that: The rotating arm member (1) is in a fan-shaped structure as a whole, with a clearance area (11) provided in the middle, and the gear assembly is located in the clearance area (11); a hanging ear hole (12) is provided on both sides of the top of the rotating arm member (1), and the hanging ear hole (12) is used to hang a fixed connecting member, and the connecting member is a tension spring (3), one end of the tension spring (3) is arranged to be hung on the rotary tiller, and the other end is hung in the hanging ear hole (12), so that the two tension springs (3) are symmetrical with each other with the central axis as a reference.

3. The agricultural machine according to claim 1, characterized in that: The gear assembly comprises a gear set and a driving motor (8), wherein the gear set comprises a driving gear and a driven gear (9), wherein the output end of the driving motor (8) can act on the driving gear and drive the driving gear to rotate, wherein the driving gear meshes with the driven gear (9), and the driven gear (9) meshes with an arc-shaped tooth segment (13); wherein the driven gear (9) comprises a main tooth (91) and a moving tooth (92) which are coaxially arranged, wherein the main tooth (91) and the moving tooth (92) rotate synchronously, wherein the main tooth (91) meshes with the driving gear, and wherein the moving tooth (92) meshes with the arc-shaped tooth segment (13).

4. The agricultural machine according to claim 3, characterized in that: The driving motor (8) is parallel to the wall surface of the mounting base, and the driving gear is sleeved on the output end to drive the driving gear to rotate.

5. The agricultural machine according to claim 4, characterized in that: The ends of the lower cantilever (15) are movably connected to the side walls of the bracket via movable shafts, and a locking member (23) is provided at both ends of the inner side wall of the bracket assembly (2) in a transversely symmetrical manner, and the locking member (23) can be sleeved on the movable shaft body (20).

6. The agricultural machine according to claim 1, characterized in that: The lower cantilever (15) comprises two arm rods and a cross rod arranged between the two arm rods. A linkage piece is sleeved on the middle part of the cross rod. The output end of the driving cylinder (16) is connected to the linkage piece.

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