Miniature light-weight mini-tiller

Abstract

The invention relates to the technical field of soil remediation, in particular to a miniature light-weight mini-tiller. Comprising a fixing frame, a first plowing assembly, a second plowing assembly and a connecting structure. The first plowing assembly comprises a telescopic rod and a supporting rod; the supporting rod is connected and mounted between the lower ends of the two telescopic rods, and the supporting rod is obliquely arranged; the supporting rod is further provided with a plurality of coulters capable of rotating and moving. The coulters are arranged on the supporting rod in different orientations and positions and form a structure with the cross section being a closed circle. The inclination direction of the coulter of the first plowing assembly is opposite to that of the coulter of the second plowing assembly, so that the bulldozing direction of the coulter is adjusted in the plowing process; the coulter of the first plowing assembly is jacked up to drive the two telescopic rods to form a height difference when encountering a harder soil layer, and the coulter of the second plowing assembly is adjusted to be close to the side, corresponding to the coulter, of the harder soil layer through the connecting structure. According to the device, the hardness uniformity and consistency of soil plowing are improved, and the plowing efficiency of soil remediation is improved.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, specifically to a miniature lightweight micro-tiller. Background Technology

[0002] The overall soil environment in China is not optimistic. While soil environmental problems are prominent in industrial and mining waste sites, the quality of arable land soil is also worrying. Soil remediation is a technical measure to restore polluted soil to its normal function. However, existing soil remediation technologies all use soil plows, but traditional soil plows have relatively low plowing efficiency. In order to improve plowing efficiency, soil plows often use multiple rows of plow blades to increase the width and plow simultaneously. However, as the plowing range widens, existing soil plows are prone to uneven soil hardness along that width, resulting in poor plowing effect. Moreover, in the actual soil remediation process, the environment and soil conditions are complex and changeable, and existing soil plows have a simple structure and lack adaptive adjustment capabilities, which greatly reduces the efficiency of soil remediation. Summary of the Invention

[0003] This invention provides a miniature lightweight micro-tiller to solve the aforementioned technical problems of uneven soil hardness and poor soil remediation during plowing.

[0004] The present invention provides a miniature lightweight micro-tiller using the following technical solution:

[0005] A miniature lightweight tiller includes a fixed frame extending forward and backward, and a first plowing assembly and a second plowing assembly disposed at the front end of the fixed frame; and the first plowing assembly and the second plowing assembly are connected by a connecting structure.

[0006] The first plowing assembly includes a telescopic rod and a support rod. The telescopic rod is located at the front end of the fixed frame and extends downward. There are two telescopic rods distributed on the left and right sides. In the initial state, the two telescopic rods are of equal length. The support rod is connected and installed between the lower ends of the two telescopic rods and is inclined. The support rod is also equipped with multiple rotatable and movable plow blades. The plow blades have a fan-shaped structure. The multiple plow blades are arranged on the support rod with different orientations and form a structure with a closed circle cross-section. In the initial state, the multiple plow blades are evenly distributed and rotate synchronously around the support rod.

[0007] The structure of the second plowing assembly is the same as that of the first plowing assembly, and the front and rear central axes of the fixed frame are mirror-symmetrically distributed. The tilting direction of the plow blade of the first plowing assembly is opposite to that of the plow blade of the second plowing assembly, so as to adjust the direction of the plow blade pushing the soil during the plowing process. When the plow blade of the first plowing assembly encounters a harder soil layer, it is lifted up and drives the two telescopic rods to form a height difference. Through the connecting structure, the plow blade of the second plowing assembly is adjusted to move closer to the plow blade side corresponding to the harder soil layer.

[0008] Preferably, the first plowing assembly further includes multiple annular grooves evenly distributed on the support rod, a plow blade ring disposed inside the plow blade, and a limiting protrusion disposed on the inner wall of the plow blade ring. The limiting protrusion is matched and installed with the annular groove to enable the plow blade to rotate around the support rod. An axially extending through groove is also provided at the lower end of the support rod to enable the plow blade to move axially. The limiting protrusions on the multiple plow blade rings are not on the same axis and the plow blade is always in the soil when the multiple plow blades rotate synchronously.

[0009] More preferably, the first plowing assembly further includes a first compression spring, a synchronizing rod, a synchronizing ring, and a lifting ring. The first compression spring is disposed between two adjacent plow blade rings. There are two synchronizing rings, which are sleeved and installed at the left and right ends of the support rod to maintain rotation. The plow blade rings are provided with through holes, and the synchronizing rod passes through the through holes on multiple plow blade rings and is fixedly connected to the synchronizing rings at both ends. The lifting ring is disposed at the bottom of the telescopic rod, and its bottom end is fixedly connected to one end of the support rod through a pin.

[0010] More preferably, the plow blade has a fan-shaped sickle structure, and four plow blades distributed adjacently on the support rod form a group, so that the blades of the plow blades form a structure with a closed circle in cross-section facing the four phases; the inclination angle of the support rod is 10-30 degrees.

[0011] More preferably, the through holes and synchronizing rods are four sets that are matched, installed together, and evenly distributed in a ring.

[0012] More preferably, the first plowing assembly and the second plowing assembly are multiple sets arranged at intervals, and a connecting structure is provided between two adjacent first plowing assemblies and second plowing assemblies to adjust the plow blades of the rear plowing assembly to move closer to the plow blade side corresponding to the harder soil layer.

[0013] Preferably, the connecting structure includes a limiting plate, a movable ring, a movable rod, and a connecting rod. There are two limiting plates, which are distributed crosswise between the two telescopic rods. The upper ends of both limiting plates are hinged to the upper ends of the telescopic rods on both sides, and the lower ends are hinged to the lifting rings on both sides respectively. Limiting grooves are provided on the limiting plates, and the movable ring is movably installed at the intersection of the two limiting grooves, so that the up and down movement of one limiting plate drives the up and down movement of the movable ring. The movable rod is telescopic, and one end is perpendicularly connected to the movable ring, and the other end is sleeved with the connecting rod and can move up and down. The middle of the fixed frame is also provided with a left and right extending fixed plate. The upper end of the connecting rod is slidably connected to the fixed plate, and the lower end is sleeved with the support rod of the rear plowing assembly and can move left and right.

[0014] More preferably, the connecting structure further includes a sliding groove disposed on the lower end face of the fixed plate. The sliding groove is inclined and parallel to the support rod of the rear plowing assembly. The top end of the connecting rod matches the sliding groove. A connecting collar is provided at the bottom end of the connecting rod. In the initial state, the connecting collar is sleeved and installed at the center of the support rod of the rear plowing assembly. Second compression springs are connected to both sides of the connecting collar, and the other end of the second compression spring is connected to the adjacent plow blade ring.

[0015] More preferably, the connecting rod includes a vertical rod at the top and an arc-shaped rod at the bottom of the vertical rod. The top of the vertical rod slides in a groove, and the bottom of the arc-shaped rod is fixed to a connecting collar. The vertical rod is also provided with a vertically extending limiting groove, and the rear end of the moving rod is provided with a limiting post. The inner side wall of the limiting post is provided with a limiting block. The limiting post is sleeved and installed on the outside of the vertical rod, and the limiting block is matched and installed with the limiting groove to achieve vertical sliding.

[0016] Preferably, a traction frame is provided at the front end of the fixed frame. One end of the traction frame is connected and fixed to the fixed frame, and the other end is connected to the drive mechanism to realize the soil plowing operation of the device.

[0017] The beneficial effects of this invention are as follows: By setting up multiple sets of plowing components, and within each set, two sets of mirror-symmetrical first and second plowing components are further set up. The inclination direction of the plow blades of the first plowing component is opposite to that of the second plowing component, thereby adjusting the direction of the plow blades pushing the soil during the plowing process. The opposite directions and crisscrossing movements further plow the soil in two different directions, improving the plowing effect for soil remediation. Furthermore, a connecting structure is set between adjacent plowing components to adjust the plowing effect. Specifically, when a certain plow blade of the first plowing component encounters a harder soil layer… When the soil is lifted, the telescopic rod on one side retracts, creating a height difference between the two telescopic rods. This causes the connecting structure to move the plow blades of the second plowing component closer to the side corresponding to the harder soil layer. This results in the plow blades of the second plowing component being more densely packed in the corresponding harder soil layer and sparser on other sides, ensuring a more uniform plowing effect. It also allows for adaptive adjustment of the plow blade position in the plow blade distribution direction, improving the practicality of the device in complex and variable soil remediation environments, improving the consistency of soil hardness during plowing, and further improving the plowing efficiency of soil remediation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional view of the overall structure of an environmentally friendly, miniature, lightweight tiller for soil remediation provided in an embodiment of the present invention;

[0020] Figure 2 This is a partial three-dimensional view of a miniature lightweight micro-tiller provided in an embodiment of the present invention;

[0021] Figure 3 This is a partial structural bottom view of a miniature lightweight tiller provided in an embodiment of the present invention;

[0022] Figure 4 A perspective view of the second plowing assembly of a miniature lightweight micro-tiller provided in an embodiment of the present invention;

[0023] Figure 5 for Figure 4 Enlarged view of the structure of part A of a miniature lightweight micro-tiller;

[0024] Figure 6 A perspective view of the first plowing assembly of a miniature lightweight micro-tiller provided in an embodiment of the present invention;

[0025] Figure 7 A three-dimensional view of the plow blade distribution of a miniature lightweight tiller provided in an embodiment of the present invention;

[0026] Figure 8 A cross-sectional view of the plow blade distribution of a miniature lightweight tiller provided in an embodiment of the present invention;

[0027] Figure 9 for Figure 8 A cross-sectional view of a miniature lightweight micro-tiller along the B-axis;

[0028] Figure 10 A cross-sectional view of a support rod for a miniature lightweight tiller provided in an embodiment of the present invention;

[0029] Figure 11 This is a perspective view of the plow blade of a miniature lightweight tiller provided in an embodiment of the present invention.

[0030] In the diagram: 1-Fixed frame, 2-First plowing assembly, 21-Telescopic rod, 22-Support rod, 23-Plow blade, 24-Ring groove, 25-Plow blade ring, 26-Limiting protrusion, 27-Through groove, 28-First compression spring, 29-Synchronizing rod, 210-Synchronizing ring, 211-Lifting ring, 212-Through hole, 3-Second plowing assembly, 4-Connecting structure, 41-Limiting plate, 42-Moving ring, 43-Moving rod, 44-Connecting rod, 45-Limiting groove, 46-Fixed plate, 47-Sliding groove, 48-Connecting collar, 49-Second compression spring, 410-Vertical rod, 411-Arc rod, 412-Limiting moving groove, 413-Limiting column, 414-Limiting block, 5-Traction frame, 6-Traction assembly. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] An embodiment of the present invention, a miniature lightweight micro-tiller, is as follows: Figures 1 to 11 As shown:

[0033] A miniature lightweight tiller includes a front-to-rear extending frame 1, a first plowing assembly 2 located at the front end of the frame 1, a second plowing assembly 3 located at the rear end of the frame 1, and a traction assembly 6. A traction frame 5 is also provided at the front end of the frame 1, one end of which is fixedly connected to the frame, and the other end is connected to a drive mechanism to pull the device for soil plowing. The first plowing assembly 2 and the second plowing assembly 3 are connected by a connecting structure 4. Figure 6 As shown: The first plowing assembly 2 includes a telescopic rod 21 and a support rod 22. The telescopic rod 21 is located at the front end of the fixed frame 1 and extends downward. There are two telescopic rods 21 distributed on the left and right sides. In the initial state, the two telescopic rods 21 are of equal length. The support rod 22 is connected and installed between the lower ends of the two telescopic rods 21, and the support rod 22 is inclined. The support rod 22 is also equipped with multiple rotatable and movable plow blades 23. The plow blades 23 have a fan-shaped structure. The multiple plow blades 23 are arranged on the support rod 22 with different orientations and form a structure with a closed circle cross-section. In the initial state, the multiple plow blades 23 are evenly distributed and the synchronous ring 210 rotates around the support rod 22. The traction assembly 6 is used to drive the miniature lightweight tiller to move. This arrangement ensures that during the process of multiple synchronously rotating plow blades plowing and repairing the soil, there are always plow blades in the soil, maintaining a certain driving force and avoiding the problem that all the plow blades appear at the top of the support rod, making it difficult to plow into the soil.

[0034] like Figure 3 As shown: The structure of the second plowing component 3 is the same as that of the first plowing component 2, and they are mirror-symmetrically distributed along the front and rear central axes of the fixed frame 1; the inclination direction of the plow blade 23 of the first plowing component 2 is opposite to that of the plow blade 23 of the second plowing component 3, thereby adjusting the direction of the plow blade 23 pushing soil during the plowing process; when the plow blade 23 of the first plowing component 2 encounters a harder soil layer, it is lifted up, causing the two telescopic rods 21 to form a height difference, which is achieved by connecting structure 4 to adjust the plow blade 23 of the second plowing component 3 to move closer to the side of the plow blade 23 corresponding to the harder soil layer; the support rods 22 of the first plowing component 2 and the support rods 22 of the second plowing component 3 are mirror-symmetrical structures, thus forming that the plow blades 23 distributed on the front and rear support rods 22 have opposite inclination directions, thereby adjusting the direction of the plow blades 23 pushing soil during the plowing process. The opposite directions and cross-movements further plow the soil in two different directions, improving the uniformity of soil hardness and thus improving the plowing effect of soil remediation.

[0035] In this embodiment, as Figure 10 and Figure 11As shown: The first plowing assembly 2 also includes multiple annular grooves 24 evenly distributed on the support rod 22, plow blade rings 25 disposed inside the plow blades 23, and limiting protrusions 26 disposed on the inner wall of the plow blade rings 25. The limiting protrusions 26 are matched and installed with the annular grooves 24 to allow the plow blades 23 to rotate circumferentially around the support rod 22. A through groove 27 extending axially is also provided at the lower end of the support rod 22 to allow the plow blades 23 to move axially. The limiting protrusions 26 on the multiple plow blade rings 25 are not on the same axis and the multiple plow blades 23 rotate synchronously, so that there is always a plow blade 23 in the soil. With this setting, under normal soil remediation environment, the plow blades 23 perform plowing operations normally, maintaining an evenly distributed distribution and circumferentially rotating. The rotation of the annular groove 24 on the support rod 22 enables soil remediation through plowing. When the plow blade 23 of the front plowing assembly encounters a hard soil layer or hard object, it will lift the corresponding plow blade 23, thereby raising the corresponding telescopic rod 21 on one side. This triggers the adjustment and movement of the connecting structure 4, causing the plow blades 23 of the rear plowing assembly to move closer to the plow blades 23 in front of and behind the lifted plow blade 23. Moreover, since the limiting protrusions 26 on the multiple plow blade rings 25 are not on the same axis, the plow blades 23 are unlocked one by one, and then the limiting protrusions enter the through groove to move, increasing the density of the plow blades 23 in the corresponding position, realizing key plowing operations and improving the plowing effect of the device.

[0036] In this embodiment, the first plowing assembly 2 further includes a first compression spring 28, a synchronizing rod 29, a synchronizing ring 210, and a lifting ring 211. The first compression spring 28 is disposed between two adjacent plow blade rings 25 to maintain an equal distance between adjacent plow blade rings 25. There are two synchronizing rings 210, which are sleeved and installed at the left and right ends of the support rod 22 to maintain rotation. The plow blade ring 23 is provided with a through hole 212. The synchronizing rod 29 passes through the through holes 212 on multiple plow blade rings 23 and is fixedly connected to the synchronizing ring 210 at both ends. The through holes 212 and the synchronizing rod 29 are matched and evenly distributed in four sets in a ring. The lifting ring 211 is disposed at the bottom of the telescopic rod 21, and its bottom end is connected and fixed to one end of the support rod 22 by a pin. This arrangement ensures that the support rod does not rotate, and multiple plow blades rotate synchronously to perform plowing operations, thereby improving the stability of the device.

[0037] In this embodiment, as Figure 11 As shown: the plow blade 23 has a fan-shaped sickle structure, and four plow blades 23 adjacently distributed on the support rod 22 form a group, so that the blades of the plow blades 23 face the four phases to form a structure with a closed circle cross-section; the inclination angle of the support rod 22 is 10-30 degrees. This setting ensures that the plow blades can easily enter the soil. The inclined structure provides a pushing force to the plowed soil, ensuring that at least one or two plow blades are in the soil during the rotation of the plow blades, maintaining the continuity of the plow blades' movement. Figure 3 As shown, the preferred tilt angle of the support rod is 15 degrees, which improves the pushing effect of plowing the soil.

[0038] In this embodiment, the first plowing assembly 2 and the second plowing assembly 3 are multiple sets arranged at intervals, and a connecting structure 4 is provided between two adjacent first plowing assemblies 2 and second plowing assemblies 3 to adjust the plow blades 23 of the rear plowing assembly to move closer to the side of the plow blades 23 corresponding to the harder soil layer.

[0039] In this embodiment, as Figures 4-6 As shown: The connecting structure 4 includes a limiting plate 41, a moving ring 42, a moving rod 43, and a connecting rod 44. There are two limiting plates 41, which are distributed crosswise between the two telescopic rods 21. The upper ends of the two limiting plates 41 are hinged to the upper ends of the telescopic rods 21 on both sides, and the lower ends are hinged to the lifting rings 211 on both sides respectively. Limiting grooves 45 are provided on the limiting plates 41. The moving ring 42 is movably installed at the intersection of the two limiting grooves 45, so that the up and down movement of the limiting plate 41 on one side drives the up and down movement of the moving ring 42. The moving rod 43 is telescopic, and one end is perpendicularly connected to the moving ring 42, and the other end is sleeved with the connecting rod 44 and can move up and down. The middle of the fixed frame 1 is also provided with a left and right extending fixed plate 4. 6. The upper end of the connecting rod 44 is slidably connected to the fixed plate 46, and the lower end is sleeved with the support rod 22 of the rear plowing assembly, allowing it to move left and right. A connecting structure 4 is then set between two adjacent plowing assemblies to adjust the plowing effect of the plow blade 23. Specifically, when a certain plow blade 23 of the first plowing assembly 2 encounters a harder soil layer, it is lifted up, and the telescopic rod 21 on one side will retract, creating a height difference between the two telescopic rods 21. This causes the connecting structure 4 to drive the plow blade 23 of the second plowing assembly 3 to move closer to the corresponding plow blade 23 on the front and back of the harder soil layer. As a result, the plow blades 23 of the second plowing assembly 3 are more densely distributed at the corresponding harder soil layer position, while the plow blades 23 on other sides are more sparsely distributed.

[0040] In this embodiment, the connecting structure 4 also includes a groove 47 disposed on the lower end face of the fixed plate 46. The groove 47 is inclined and parallel to the support rod 22 of the rear plowing assembly. The top end of the connecting rod 44 matches the groove 47. The bottom end of the connecting rod 44 is provided with a connecting collar 48. In the initial state, the connecting collar 48 is sleeved and installed at the center of the support rod 22 of the rear plowing assembly. A second compression spring 49 is connected to both sides of the connecting collar 48, and the other end of the second compression spring 49 is connected to the adjacent plow blade 23 ring, ensuring a more uniform plowing effect. This allows the position of the plow blade 23 to be adaptively adjusted in the distribution direction of the plow blade 23, improving the practicality of the device in complex and variable soil remediation environments, improving the consistency of soil plowing hardness, and further improving the plowing efficiency of soil remediation.

[0041] In this embodiment, the connecting rod 44 includes a vertical rod 410 at the top and an arc-shaped rod 411 at the bottom of the vertical rod 410. The top end of the vertical rod 410 slides in the groove 47, and the bottom end of the arc-shaped rod 411 is fixed to the connecting collar 48. The vertical rod 410 is also provided with a vertically extending limiting movement groove 412. The rear end of the moving rod 43 is provided with a limiting post 413, and the inner side wall of the limiting post 413 is provided with a limiting block 414. The limiting post 413 is sleeved and installed on the outside of the vertical rod 410, and the limiting block 414 is matched and installed with the limiting movement groove 412 to achieve vertical sliding. With this configuration, when the plowing component encounters a hard soil layer or other special situation at a certain position, the moving ring 42 will drive the moving rod 43 to move to one side, and the moving rod 43 will have a vertical movement difference. The limiting block 414 is set to move vertically within the limiting movement groove 412 to ensure that the movement of the moving rod 43 does not affect the normal operation of the connecting rod 44 and other subsequent structures.

[0042] Work process:

[0043] When using this plow for soil remediation, the traction frame 5 of the plow is pulled by a drive mechanism or other power equipment to complete the fixed connection. Under the traction drive of the drive mechanism, the device moves forward. Since the support rods 22 of the first plowing assembly 2 and the support rods 22 of the second plowing assembly 3 are mirror images of each other, the plow blades 23 distributed on the front and rear support rods 22 are tilted in opposite directions. This allows for adjustment of the soil pushing direction of the plow blades 23 during the plowing process. The directions are opposite, and they move in a crisscross pattern, thus plowing the soil in two different directions. By setting multiple sets of mirror images of each other for multiple plowing operations, this invention improves the uniformity of soil hardness during plowing. This device also solves the problem that in actual soil remediation processes, due to the complex and variable environment and soil conditions, it is often impossible to effectively plow and remediate the soil at a certain location when encountering hard soil layers or hard objects.

[0044] Specifically, the device uses a connecting structure 4 between two adjacent plowing assemblies to adjust the plowing effect of the plow blades 23. Further, the first plowing assembly 2 is located at the front. When one of the plow blades 23 of the first plowing assembly 2 encounters a harder soil layer, it is lifted, causing the corresponding telescopic rod 21 to retract upwards. This results in a height difference between the two telescopic rods 21, causing a change in the position of the two intersecting limiting plates 41. The lifting ring 211 and the limiting plate 41 on the side where the plow blade 23 is lifted move upwards, causing the intersection point of the two limiting plates 41 to move, which in turn moves the moving ring 42, causing the moving rod 43 connected to the moving ring 42 to shift left and right. Since the connecting collar 48 is initially located at the center of the rear support rod 22, the movement of the moving rod 43 causes the connecting rod 44 and the connecting collar 48 to shift left or right along the axial direction of the support rod 22.

[0045] If a plow blade 23 of the front plowing assembly encounters a hard soil layer or other special situation on the left, the connecting collar 48 will compress the second compression spring 49 on the left, causing the plow blade 23 on the left side of the connecting collar 48 to move towards the plow blade 23 corresponding to the one that encountered the harder soil layer. Due to the combined action of the second compression spring 49 and the first compression spring 28, the plow blade 23 on the right side of the connecting collar 48 will also move towards the corresponding plow blade 23 on the left. Because the plow blades 23 are distributed at different positions on the support rod 22, the limiting protrusions 26 are in different states when they rotate to the through groove 27. That is, the limiting protrusions 26 can only enter the through groove 27 after all the plow blades 23 have left the soil and are then subjected to driving force. Therefore, the plow blades 23 can only move slowly in batches, one by one, to form a plow blade distribution that is more dense at the corresponding harder soil layer position, while the plow blades 23 on other sides are more sparse. This improves the consistency of soil hardness during plowing and further improves the plowing efficiency of soil remediation.

[0046] Simultaneously, during the axial movement and adjustment of the plow blade 23 along the support rod 22, the plow blade 23 continuously rotates. Due to the special structure of the plow blade 23, when it penetrates deep into the soil, the soil exerts an axial force on it. However, because the limiting protrusion 26 of the plow blade 23 ring rotates within the ring groove 24, the plow blade 23 does not move axially at this time. When the plow blade 23 leaves the soil, the component force of the soil on the plow blade 23, i.e., the thrust, disappears, and the plow blade 23 does not move axially. This allows the plow blade 23 to push the plowed soil during the soil turning and plowing operation, while the soil does not push the plow blade 23 to move. This ensures both the plowing effect of the plowing machine and that the axial movement of the plow blade 23 is not affected under abnormal working conditions during the plowing process. By adjusting the pushing direction of multiple sets of plow blades 23 with different inclination directions during the plowing process, the plowing becomes more uniform, and the position of the plow blades 23 can be adaptively adjusted in the distribution direction of the plow blades 23, improving the practicality of the device in complex and variable soil remediation environments.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A miniature lightweight tiller, characterized in that: It includes a front-to-back extending fixed frame, a first plowing assembly disposed at the front end of the fixed frame, and a second plowing assembly disposed at the rear end of the fixed frame; and the first plowing assembly and the second plowing assembly are connected by a connecting structure. The first plowing assembly includes a telescopic rod and a support rod; the telescopic rod is located at the front end of the fixed frame and extends downward, and there are two telescopic rods distributed on the left and right sides; and in the initial state, the two telescopic rods are of equal length. The support rod is connected and installed between the lower ends of the two telescopic rods, and the support rod is inclined; the support rod is also equipped with multiple rotatable and movable plow blades, which are fan-shaped structures. The multiple plow blades are set on the support rod with different orientations and form a structure with a closed circle cross-section; in the initial state, the multiple plow blades are evenly distributed and rotate synchronously around the support rod. The structure of the second plowing assembly is the same as that of the first plowing assembly, and the front and rear central axes of the fixed frame are mirror-symmetrically distributed. The tilting direction of the plow blade of the first plowing assembly is opposite to that of the plow blade of the second plowing assembly, so as to adjust the direction of the plow blade pushing the soil during the plowing process. When the plow blade of the first plowing assembly encounters a harder soil layer, it is lifted up and drives the two telescopic rods to form a height difference. Through the connecting structure, the plow blade of the second plowing assembly is adjusted to move closer to the plow blade side corresponding to the harder soil layer.

2. The miniature lightweight tiller according to claim 1, characterized in that: The first plowing assembly also includes multiple annular grooves evenly distributed on the support rod, a plow blade ring disposed inside the plow blade, and a limiting protrusion disposed on the inner wall of the plow blade ring. The limiting protrusion is matched and installed with the annular groove to enable the plow blade to rotate around the support rod. An axially extending through groove is also provided at the lower end of the support rod to enable the plow blade to move axially. The limiting protrusions on the multiple plow blade rings are not on the same axis and the plow blade is always in the soil when the multiple plow blades rotate synchronously.

3. A miniature lightweight tiller according to claim 2, characterized in that: The first plowing assembly also includes a first compression spring, a synchronizing rod, a synchronizing ring, and a lifting ring. The first compression spring is disposed between two adjacent plow blade rings. There are two synchronizing rings, which are sleeved and installed on the left and right ends of the support rod to maintain rotation. The plow blade rings are provided with through holes, and the synchronizing rod passes through the through holes on multiple plow blade rings and is fixedly connected to the synchronizing rings at both ends. The lifting ring is disposed at the bottom of the telescopic rod, and its bottom end is fixedly connected to one end of the support rod through a pin.

4. A miniature lightweight tiller according to claim 3, characterized in that: The plow blade has a fan-shaped sickle structure, and four plow blades distributed adjacently on the support rod form a group, so that the blades of the plow blades face the four phases to form a structure with a closed circle in cross-section; the inclination angle of the support rod is 10-30 degrees.

5. A miniature lightweight tiller according to claim 4, characterized in that: The through holes and synchronizing rods are installed in four sets that are matched and evenly distributed in a ring.

6. A miniature lightweight tiller according to claim 5, characterized in that: The first plowing assembly and the second plowing assembly are multiple sets arranged at intervals, and a connecting structure is provided between two adjacent first plowing assemblies and second plowing assemblies to adjust the plow blades of the rear plowing assembly to move closer to the plow blade side corresponding to the harder soil layer.

7. A miniature lightweight tiller according to claim 1, characterized in that: The connecting structure includes a limiting plate, a movable ring, a movable rod, and a connecting rod. There are two limiting plates, which are distributed crosswise between the two telescopic rods. The upper ends of both limiting plates are hinged to the upper ends of the telescopic rods on both sides, and the lower ends are hinged to the lifting rings on both sides respectively. Limiting grooves are provided on the limiting plates, and the movable ring is movably installed at the intersection of the two limiting grooves, so that the up and down movement of the limiting plate on one side drives the up and down movement of the movable ring. The movable rod is telescopic, and one end is perpendicularly connected to the movable ring, while the other end is sleeved with the connecting rod and can move up and down. The middle of the fixed frame is also provided with a left and right extending fixed plate. The upper end of the connecting rod is slidably connected to the fixed plate, and the lower end is sleeved with the support rod of the rear plowing assembly and can move left and right.

8. A miniature lightweight tiller according to claim 7, characterized in that: The connecting structure also includes a sliding groove on the lower end face of the fixed plate. The sliding groove is inclined and parallel to the support rod of the rear plowing assembly. The top of the connecting rod matches the sliding groove. The bottom of the connecting rod is provided with a connecting collar. In the initial state, the connecting collar is sleeved and installed at the center of the support rod of the rear plowing assembly. A second compression spring is connected to both sides of the connecting collar, and the other end of the second compression spring is connected to the adjacent plow blade ring.

9. A miniature lightweight tiller according to claim 8, characterized in that: The connecting rod includes a vertical rod at the top and an arc-shaped rod at the bottom of the vertical rod. The top of the vertical rod slides in a groove, and the bottom of the arc-shaped rod is fixed to a connecting collar. The vertical rod is also provided with a vertically extending limiting groove. The rear end of the moving rod is provided with a limiting post, and the inner side wall of the limiting post is provided with a limiting block. The limiting post is sleeved on the outside of the vertical rod, and the limiting block is matched with the limiting groove to achieve vertical sliding.

10. A miniature lightweight tiller according to claim 1, characterized in that: A traction frame is also provided at the front end of the fixed frame.

Images