Self-leveling rotary tiller

Abstract

The invention discloses a self-leveling rotary tiller, which belongs to the technical field of rotary tilling equipment. The invention comprises a frame, a rotary tiller shaft, a rotary tiller and a transmission device. The transmission device is fixedly installed on the upper part of the frame. Side guard plates are arranged at the ends of the frame. Both ends of the rotary tiller shaft are rotatably connected with the side guard plates. A plurality of rotary tillers are installed on the rotary tiller shaft. The rotary tiller shaft is driven by the transmission device. The invention is characterized in that: a traction frame comprises a first rotating frame and a second rotating frame. The first rotating frame comprises a first rotating sleeve. A first fixed plate is extended from the outer surface of the first rotating sleeve. A connecting seat is installed at the front of the fixed plate. The second rotating frame comprises a second rotating sleeve. A second fixed plate is extended from the outer surface of the second rotating sleeve. The first rotating sleeve and the second rotating sleeve are connected through a gantry beam. A leveling mechanism is arranged on both sides of the frame. The technical problem of synchronous tilting of the rotary tiller caused by the tilting of the tractor during the rotary tilling of the rotary tiller on a slope or rotary tilling of the ditch is solved. The invention is mainly used in agriculture.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary tillage equipment, and in particular relates to a self-leveling rotary tiller. Background Art

[0002] Since the rotary tiller needs to be towed by a tractor during use, the rotary tiller and the tractor are usually connected firmly by a traction device, which causes the rotary tiller to tilt synchronously with the tilt of the tractor during the rotary tillage process. At present, the rotary tiller leveling field usually adopts hydraulic rods in combination with electrical systems to achieve adjustment;

[0003] For example, patent publication number (CN110679213A) discloses an automatic leveling system for a rotary tiller and an automatic leveling method thereof. The automatic leveling system for a rotary tiller comprises a walking chassis and a rotary tiller implement. The rotary tiller implement is rotatably mounted on the walking chassis in a manner capable of adjusting an inclination angle. The rotary tiller implement is connected to a rotating drive device for driving the rotary tiller implement to rotate so as to adjust the inclination angle. The automatic leveling system for a rotary tiller also comprises an automatic leveling device which is connected to the rotating drive device and controls the rotating drive device to drive the rotary tiller implement to be within a set inclination angle relative to a horizontal plane. The automatic leveling method can realize automatic leveling of the rotary tiller, and the leveling is timely and reliable with small errors, which can improve the working efficiency of the rotary tiller. The automatic leveling method includes the steps of using two distance sensors to detect the distance value between the two distance sensors and the plumb bob, and controlling the rotation drive device to rotate and level the rotary tiller according to the comparison result of the difference between the distance values ​​detected by the two sensors and the preset value. The manufacturing process is simple and the influence of shaking during normal work can be eliminated. The above technical solution provides a leveling solution that drives the hydraulic rod to push the frame through the monitoring of the sensor in the electrical system. The leveling cost is high and the process flow is cumbersome, which is not suitable for the rough use environment of rotary tillage.

[0004] Based on this, our company has developed a self-leveling rotary tiller to replace the existing technology. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a self-leveling rotary tiller to solve the technical problem of synchronous tilting of the rotary tiller caused by the tilting of the tractor during rotary tilling on a slope or rotary tilling in a furrow.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a self-leveling rotary tiller, comprising a frame, a rotary tiller shaft, a rotary tiller and a transmission device, wherein the transmission device is fixedly mounted on the upper part of the frame, a side guard plate is arranged at the side end of the frame, both ends of the rotary tiller shaft are rotatably connected to the side guard plate, a plurality of rotary tillers are mounted on the rotary tiller shaft, and the rotary tiller shaft is driven by the transmission device, characterized in that: a slideway is arranged on the upper surface of the frame;

[0007] A traction frame, the traction frame comprises a first rotating frame and a second rotating frame, the first rotating frame comprises a first rotating collar, a first fixing plate extends from an outer surface of the first rotating collar, and a connecting seat is installed at the front of the fixing plate;

[0008] A second rotating frame, the second rotating frame comprises a second rotating ring, a second fixing plate extends from an outer surface of the second rotating ring, and the first rotating ring and the second rotating ring are connected via a gantry beam;

[0009] Leveling mechanism: leveling mechanisms are set on both sides of the frame.

[0010] Further: the leveling mechanism includes a first leveling mechanism and a second leveling mechanism, the first leveling mechanism and the second leveling mechanism have the same structure, the first leveling mechanism includes a leveling plate connected to the side of the frame, one end of the hollow square tube passes through the leveling plate and is fixed after being flush with its upper surface, the hollow square tube has a sliding cavity for placing a pressure-resistant spring, one end of the sliding rod is connected to the roller, a baffle is installed at the bottom of the sliding rod, the baffle is larger than the hollow square tube, and the other end of the baffle passes through the pressure-resistant spring and the sliding cavity in turn and is connected to the seesaw through a pin shaft, a first slider is installed on the side of the seesaw away from the leveling plate, and the first slider moves along the slide toward the side of the leveling plate during the lifting of the seesaw.

[0011] By adopting the above technical solution: since the rotary tiller needs to be towed by a tractor during use, the rotary tiller and the tractor are usually connected firmly by a traction device, which causes the rotary tiller to tilt synchronously with the tilt of the tractor during the rotary tillage process. At present, sensors are usually used with electrical systems to detect the tilt angle through sensors to transmit instructions for leveling to ensure absolute parallelism. This method has a complex process flow and high production costs. In addition, due to the complex environment of the rotary tillage plots, this method cannot distinguish that the system is in a leveling working state when it is tilted in non-gullies, gullies, etc., which accelerates the damage of parts.

[0012] The core improvement of the present invention is that during rotary tillage in plain areas, as the rotary tillage depth changes, the leveling mechanisms on both sides of the frame are subjected to force synchronously, and the sliding rod moves upward in the hollow square tube, thereby causing one side of the seesaw to move upward, and the other end of the seesaw is restricted by the slideway to form a triangle between the seesaw, the frame, and the sliding rod. The leveling mechanisms on both sides of the frame form a triangle, thereby improving the stability of the frame itself. When the baffle approaches the hollow square tube, the pressure-resistant spring is squeezed to compensate for the vibration during the rotary tillage process and avoid hard impact.

[0013] When the front tractor tilts to one side, the frame tilts to one side synchronously, so that one side of the frame is higher and the other side is lower. After the roller is stressed, the sliding rod moves upward in the hollow square tube, so that one side of the seesaw moves upward. Since the other side of the frame is higher, the seesaw forms a triangular angle under the action of the pin during the lifting process, so that the higher side of the frame is pressed down during the lifting process. When pressing down, the first rotating ring and the second rotating ring are rotated to achieve the effect of leveling the frame.

[0014] It should be noted that the initial installation height of the roller is the same as the installation height of the rotary blade.

[0015] Furthermore: the first sliding block has a circular shape.

[0016] By adopting the above technical solution: circular sliding rotation is smoother.

[0017] Furthermore, a soil pressing roller is towed at the rear of the frame through a traveling frame, and the soil pressing roller is rotatably connected to the side guard plate through a rotating member.

[0018] Furthermore: leveling mechanisms are arranged on both sides of the frame, and the two sets of leveling mechanisms are installed in a staggered manner.

[0019] Furthermore: a connecting plate is overlapped between the first fixing plate and the second fixing plate.

[0020] Further: the first leveling mechanism also includes a U-shaped seesaw, the top of the sliding rod is rotatably connected to the U-shaped seesaw through a pin shaft, a second sliding block is installed on the outside of the U-shaped seesaw away from the leveling plate, and a first sliding groove is provided on the inner wall of the U-shaped seesaw;

[0021] The second leveling mechanism also includes a T-shaped seesaw, the top of the sliding rod is rotatably connected to the T-shaped seesaw through a pin shaft, a third sliding block is installed on the outside of the T-shaped seesaw away from the leveling plate, and a second sliding groove is provided on the inner wall of the T-shaped seesaw;

[0022] The second slider can be slid and lifted along the second slide groove, and the third slider can be slid and lifted along the first slide groove. The first slider, the second slider and the third slider are circular in shape.

[0023] By adopting the above technical solution: since the rotary tiller needs to be towed by a tractor during use, the rotary tiller and the tractor are usually connected firmly by a traction device, which causes the rotary tiller to tilt synchronously with the tilt of the tractor during the rotary tillage process. At present, sensors are usually used with electrical systems to detect the tilt angle through sensors to transmit instructions for leveling to ensure absolute parallelism. This method has a complex process flow and high production costs. In addition, due to the complex environment of the rotary tillage plots, this method cannot distinguish the leveling working state when the tilting is not in gullies or gullies, which accelerates the damage of parts.

[0024] The core improvement of the present invention is that: by adopting the U-shaped seesaw and T-shaped seesaw which limit each other, during the rotary tillage process in the plain area, as the rotary tillage depth changes, the first leveling mechanism and the second leveling mechanism on both sides of the frame are subjected to force synchronously, so that the U-shaped seesaw and the T-shaped seesaw are lifted synchronously, and the force on the frame is dispersed. When the tractor drives the frame to tilt toward one side of the first leveling mechanism, the sliding rod moves upward in the hollow square tube, so that one side of the U-shaped seesaw moves upward, and the other end of the U-shaped seesaw is limited by the second sliding groove so that a triangle is formed between the U-shaped seesaw, the T-shaped seesaw and the sliding rod. At the same time, the U-shaped seesaw exerts force on the T-shaped seesaw and the frame in the process of moving away from the second leveling mechanism, so that the first rotating ring and the second rotating ring rotate, and the purpose of leveling the frame is achieved. When the frame tilts toward the second leveling mechanism, the T-shaped seesaw exerts external force on the U-shaped seesaw and the frame in the process of moving away from the first leveling mechanism, so that the first rotating ring and the second rotating ring rotate, and the purpose of leveling the frame is achieved.

[0025] It should be noted that the U-shaped seesaw and the T-shaped seesaw replace the seesaws in the original first leveling mechanism and the second leveling mechanism.

[0026] Compared with the prior art, the present invention has the following advantages: the present invention has a designed leveling mechanism, when the leveling mechanisms on both sides of the frame are subjected to force synchronously, the seesaw is synchronously lifted to disperse the force on the frame, thereby improving the stability of the frame; when the frame tilts to one side, the movable rod moves upward in the hollow square tube, thereby causing one side of the seesaw to move upward, and the other end of the seesaw is restricted by the slideway to form a triangle between the seesaw, the frame, and the sliding rod, thereby pressing down on the higher side of the frame during the lifting process, and causing the first rotating collar and the second rotating collar to rotate during the downward pressure, thereby achieving the effect of leveling the frame;

[0027] On the other hand, a first leveling mechanism and a second leveling mechanism are adopted. Through the mutual limitation between the first leveling mechanism and the second leveling mechanism, when any one of them is subjected to force, an external force is applied to the other while pressing the frame downward, so that the first rotating ring and the second rotating ring are rotated to achieve a leveling effect. Since the structure of the present application is more reasonable, the production cost is lower and it is suitable for comprehensive promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the present invention;

[0029] Figure 2 It is a frame structure diagram of the present invention;

[0030] Figure 3 It is a structural diagram of the traction frame of the present invention;

[0031] Figure 4 It is a structural diagram of the leveling mechanism of the first embodiment of the present invention;

[0032] Figure 5 The present invention Figure 2 A partial enlarged view;

[0033] Figure 6 is a structural diagram of a leveling mechanism according to a second embodiment of the present invention;

[0034] Figure 7 The present invention Figure 6 A magnified view of the local structure at point B;

[0035] Figure 8 The present invention Figure 6 Enlarged view of the local structure at point C. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the 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 operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Embodiment 1:

[0038] In the first embodiment of the present invention, Figures 1 to 5 As shown, the self-leveling rotary tiller comprises a frame 1, a rotary tiller shaft 2, a rotary tiller blade 3 and a transmission device 4, wherein the transmission device 4 is fixedly mounted on the upper portion of the frame 1, a side guard plate 5 is arranged at the side end of the frame 1, both ends of the rotary tiller shaft 2 are rotatably connected to the side guard plate 5, a plurality of rotary tillers 3 are mounted on the rotary tiller shaft 2, and the rotary tiller shaft 2 is driven by the transmission device 4, and is characterized in that: a slideway 20 is arranged on the upper surface of the frame 1;

[0039] A traction frame 6, wherein the traction frame 6 comprises a first rotating frame 7 and a second rotating frame 8, wherein the first rotating frame 7 comprises a first rotating collar 71, a first fixing plate 72 extends from an outer surface of the first rotating collar 71, and a connecting seat 73 is installed at the front of the first fixing plate 72;

[0040] A second rotating frame 8, wherein the second rotating frame 8 comprises a second rotating ring 81, a second fixing plate 82 extends from the outer surface of the second rotating ring 81, and the first rotating ring 71 and the second rotating ring 81 are connected via a gantry beam 9;

[0041] Leveling mechanism: leveling mechanisms are provided on both sides of the frame 1;

[0042] The leveling mechanism includes a first leveling mechanism 25 and a second leveling mechanism 26. The first leveling mechanism 25 and the second leveling mechanism 26 have the same structure. The first leveling mechanism includes an adjustment plate 10 connected to the side of the frame 1. One end of the hollow square tube 11 passes through the adjustment plate 10 and is fixed flush with its upper surface. The hollow square tube 11 has a sliding cavity 13 with a pressure-resistant spring 12. One end of the sliding rod 14 is connected to the roller 15. A baffle 16 is installed at the bottom of the sliding rod 14. The baffle 16 is larger than the hollow square tube 11. The other end of the baffle 16 passes through the pressure-resistant spring 12 and the sliding cavity 13 in turn and is rotatably connected to the seesaw 18 through the pin 17. A first slider 19 is installed on the side of the seesaw 18 away from the adjustment plate 10. During the lifting process of the seesaw 18, the first slider 19 moves along the slide 20 toward the side of the adjustment plate 10. The first slider 19 is circular in shape.

[0043] The rear part of the frame 1 is towed with a soil pressing roller 22 through a traveling frame 21, and the soil pressing roller 22 is rotatably connected to the side guard plate 5 through a rotating member 23;

[0044] Leveling mechanisms are provided on both sides of the frame 1, and the two sets of leveling mechanisms are installed in a staggered manner;

[0045] The connecting plate 24 is overlapped between the first fixing plate 72 and the second fixing plate 82 .

[0046] By adopting the above technical solution: since the rotary tiller needs to be towed by a tractor during use, the rotary tiller and the tractor are usually connected firmly by a traction device, which causes the rotary tiller to tilt synchronously with the tilt of the tractor during the rotary tillage process. At present, sensors are usually used with electrical systems to detect the tilt angle through sensors to transmit instructions for leveling to ensure absolute parallelism. This method has a complex process flow and high production costs. In addition, due to the complex environment of the rotary tillage plots, this method cannot distinguish the leveling working state when the tilting is not in gullies or gullies, which accelerates the damage of parts.

[0047] The core improvement of the present invention is that during rotary tillage in plain areas, as the rotary tillage depth changes, the leveling mechanisms on both sides of the frame 1 are subjected to force synchronously, and the sliding rod 14 moves upward in the hollow square tube 11, thereby causing one side of the seesaw 18 to move upward, and the other end of the seesaw 18 is restricted by the slide 20 to form a triangle between the seesaw 18, the frame 1, and the sliding rod 14. The leveling mechanisms on both sides of the frame 1 form a triangle, thereby improving the stability of the frame 1 itself. When the baffle 16 approaches the hollow square tube 11, it squeezes the pressure-resistant spring 12 to compensate for the vibration during rotary tillage and avoid hard impact, and the pressure-resistant spring 12 cannot slide out of the hollow square tube 11.

[0048] When the front tractor tilts to one side, the frame 1 tilts to one side synchronously, so that one side of the frame 1 is higher and the other side is lower. After the roller 15 is stressed, the sliding rod 14 moves upward in the hollow square tube 11, so that one side of the rocker 18 moves upward. Since the other side of the frame 1 is higher, the rocker 18 forms a triangular angle under the action of the pin 17 during the lifting process, so that the higher side of the frame 1 is pressed down during the lifting process, and the first rotating ring 71 and the second rotating ring 81 are rotated during the pressing, so as to achieve the effect of leveling the frame 1.

[0049] It should be noted that the initial installation height of the roller 15 is the same as the installation position height of the rotary tiller 3 . Embodiment 2:

[0050] In a second embodiment of the present invention, Figures 1 to 8 As shown, the self-leveling rotary tiller comprises a frame 1, a rotary tiller shaft 2, a rotary tiller blade 3 and a transmission device 4, wherein the transmission device 4 is fixedly mounted on the upper portion of the frame 1, a side guard plate 5 is arranged at the side end of the frame 1, both ends of the rotary tiller shaft 2 are rotatably connected to the side guard plate 5, a plurality of rotary tillers 3 are mounted on the rotary tiller shaft 2, and the rotary tiller shaft 2 is driven by the transmission device 4, and is characterized in that: a slideway 20 is arranged on the upper surface of the frame 1;

[0051] A traction frame 6, wherein the traction frame 6 comprises a first rotating frame 7 and a second rotating frame 8, wherein the first rotating frame 7 comprises a first rotating collar 71, a first fixing plate 72 extends from an outer surface of the first rotating collar 71, and a connecting seat 73 is installed at the front of the first fixing plate 72;

[0052] A second rotating frame 8, wherein the second rotating frame 8 comprises a second rotating ring 81, a second fixing plate 82 extends from the outer surface of the second rotating ring 81, and the first rotating ring 71 and the second rotating ring 81 are connected via a gantry beam 9;

[0053] The leveling mechanism includes a first leveling mechanism 25 and a second leveling mechanism 26. The first leveling mechanism includes a leveling plate 10 connected to the side of the frame 1. One end of the hollow square tube 11 passes through the leveling plate 10 and is fixed flush with its upper surface. The hollow square tube 11 has a sliding cavity 13 to prevent the pressure-resistant spring 12 from sliding. One end of the sliding rod 14 is connected to the roller 15. A baffle 16 is installed at the bottom of the sliding rod 14. The baffle 16 is larger than the hollow square tube 11. The other end of the baffle 16 passes through the pressure-resistant spring 12 and the sliding cavity 13 in turn and is rotatably connected to the U-shaped seesaw 27 through the pin 17. A second slider 28 is installed on the outside of the U-shaped seesaw 27 away from the leveling plate 10. A first slide groove 29 is provided on the inner wall of the U-shaped seesaw 27.

[0054] The second leveling mechanism 26 includes an adjustment plate 10 connected to the side of the frame 1, one end of the hollow square tube 11 passes through the adjustment plate 10 and is fixed flush with its upper surface, a sliding cavity 13 for placing a pressure-resistant spring 12 is provided in the hollow square tube 11, one end of the sliding rod 14 is connected to a roller 15, a baffle 16 is installed at the lower part of the sliding rod 14, the baffle 16 is larger than the hollow square tube 11, and the other end of the baffle 16 passes through the pressure-resistant spring 12 and the sliding cavity 13 in sequence and is rotatably connected to a T-shaped seesaw 30 through a pin 17, a third slider 31 is installed on the outside of the T-shaped seesaw 30 away from the adjustment plate 10, and a second slide groove 32 is provided on the inner wall of the T-shaped seesaw 30;

[0055] The second slider 28 can slide and rise along the second slide groove 32 , and the third slider 31 can slide and rise along the first slide groove 29 . The first slider 19 , the second slider 28 , and the third slider 31 are circular in shape.

[0056] By adopting the above technical solution: since the rotary tiller needs to be towed by a tractor during use, the rotary tiller and the tractor are usually connected firmly by a traction device, which causes the rotary tiller to tilt synchronously with the tilt of the tractor during the rotary tillage process. At present, sensors are usually used with electrical systems to detect the tilt angle through sensors to transmit instructions for leveling to ensure absolute parallelism. This method has a complex process flow and high production costs. In addition, due to the complex environment of the rotary tillage plots, this method cannot distinguish the leveling working state when the tilting is not in gullies or gullies, which accelerates the damage of parts.

[0057] The core improvement of the present invention is that: the U-shaped seesaw 27 and the T-shaped seesaw 30 that are limited to each other are used. During the rotary tillage process in the plain area, as the rotary tillage depth changes, the first leveling mechanism 25 and the second leveling mechanism 26 on both sides of the frame 1 are synchronously stressed, so that the U-shaped seesaw 27 and the T-shaped seesaw 30 are synchronously lifted, and the force on the frame 1 is dispersed. When the tractor drives the frame 1 to tilt toward the side of the first leveling mechanism 25, the sliding rod 14 moves upward in the hollow square tube 11, so that one side of the U-shaped seesaw 27 moves upward, and the other end of the U-shaped seesaw 27 is restricted by the second slide groove 32 so that the U-shaped seesaw 27, the T-shaped seesaw 30, and the sliding rod 14 form a triangle, and the U-shaped seesaw 27 applies force to the T-shaped seesaw 30 and the frame 1 during the process of moving away from the second leveling mechanism 26, so that the first rotating ring 71 and the second rotating ring 81 rotate, and the purpose of leveling the frame 1 is achieved. When the frame 1 tilts toward the second leveling mechanism 26, the T-shaped seesaw 30 applies external force to the U-shaped seesaw 27 and the frame 1 during the process of moving away from the first leveling mechanism 25, so that the first rotating ring 71 and the second rotating ring 81 rotate, and the purpose of leveling the frame 1 is achieved.

[0058] It should be noted that the U-shaped seesaw 27 and the T-shaped seesaw 30 replace the seesaw 18 in the original first leveling mechanism 25 and the second leveling mechanism 26 .

[0059] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention. These improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A self-leveling rotary tiller, comprising a frame (1), a rotary tiller blade shaft (2), a rotary tiller blade (3) and a transmission device (4), wherein the transmission device (4) is fixedly mounted on the upper portion of the frame (1), a side guard plate (5) is arranged at the side end of the frame (1), both ends of the rotary tiller blade shaft (2) are rotatably connected to the side guard plate (5), a plurality of rotary tillers (3) are mounted on the rotary tiller blade shaft (2), and the rotary tiller blade shaft (2) is driven by the transmission device (4). Features: The upper surface of the frame (1) is provided with a slideway (20); A traction frame (6), the traction frame (6) comprising a first rotating frame (7) and a second rotating frame (8), the first rotating frame (7) comprising a first rotating collar (71), a first fixing plate (72) extending from an outer surface of the first rotating collar (71), and a connecting seat (73) being installed at the front of the first fixing plate (72); a second rotating frame (8), the second rotating frame (8) comprising a second rotating ring (81), a second fixing plate (82) extending from an outer surface of the second rotating ring (81), and the first rotating ring (71) and the second rotating ring (81) being connected via a gantry beam (9); A leveling mechanism is provided on both sides of the frame (1), the leveling mechanism comprising a first leveling mechanism (25) and a second leveling mechanism (26), the first leveling mechanism (25) and the second leveling mechanism (26) having the same structure, the first leveling mechanism (25) comprising a leveling plate (10) connected to the side of the frame (1), one end of a hollow square tube (11) passing through the leveling plate (10) and being flush with the upper surface thereof and then fixed, the hollow square tube (11) having a sliding cavity (25) in which a pressure-resistant spring (12) is placed. 13), one end of the sliding rod (14) is connected to the roller (15), a baffle (16) is installed at the lower part of the sliding rod (14), the baffle (16) is larger than the hollow square tube (11), and the other end passes through the pressure-resistant spring (12) and the sliding cavity (13) in sequence and is rotatably connected to the seesaw (18) through the pin shaft (17), and a first slider (19) is installed on the side of the seesaw (18) away from the adjustment plate (10). During the lifting process of the seesaw (18), the first slider (19) moves along the slideway (20) toward the side of the adjustment plate (10).

2. The self-leveling rotary tiller according to claim 1, Features: The first sliding block (19) has a circular shape.

3. The self-leveling rotary tiller according to claim 1, Features: A soil pressing roller (22) is towed at the rear of the frame (1) via a traveling frame (21), and the soil pressing roller (22) is rotatably connected to the side guard plate (5) via a rotating member (23).

4. The self-leveling rotary tiller according to claim 1, Features: Leveling mechanisms are provided on both sides of the frame (1), and the two sets of leveling mechanisms are installed in a staggered manner.

5. The self-leveling rotary tiller according to claim 1, Features: A connecting plate (24) is overlapped between the first fixing plate (72) and the second fixing plate (82).

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