A rotary tiller for a mini-tiller

Abstract

The utility model discloses a kind of micro tiller rotary tillage tools, including tool shaft, the tool holder of being set on the tool shaft, rotary tillage blade and angle adjustment mounting structure, the rotary tillage blade is fixedly connected with the tool holder by the angle adjustment mounting structure, the angle adjustment mounting structure can adjust the angle of the rotary tillage blade and fixed.This micro tiller rotary tillage tool, the angle of tool can be adjusted according to soil hardness, humidity and crop root system condition, so as to realize multi-scene tillage requirement.

Description

Technical Field

[0001] This utility model relates to the field of micro-tiller technology, specifically to a rotary tiller blade for a micro-tiller. Background Technology

[0002] The main components of a rotary tiller blade include the blades, the cutter shaft, and the blade holder, among which: The blade is the part that comes into direct contact with the soil, cutting and breaking it up through rotation. Its material and shape directly affect the tillage effect. Common types include ordinary blades, thick blades, and hard-soil blades, with different specifications to suit different operating needs (such as 18-axis, 23-axis, and 32-axis blades).

[0003] Traditional rotary tillers typically use a rigid connection to fix the blades to the blade holder (such as welding or bolting), resulting in a non-adjustable blade angle. In actual operation, soil hardness, moisture, and crop root conditions vary significantly, for example: 1. Heavy clay soils require a large inclination angle to improve soil breaking capacity, but fixed-angle cutters are prone to getting stuck in the compacted layer, causing a surge in traction resistance; 2. For loose, dry land, a small inclination angle is recommended to reduce power consumption, but using a fixed-angle blade to break up the soil too finely can actually exacerbate dust. 3. Obstacles must be avoided in the root zone of the orchard, and the fixed angle makes it impossible to adjust the cutting trajectory in real time. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical problem this utility model aims to solve is to provide a rotary tiller blade that can adjust the blade angle according to soil hardness, moisture, and crop root conditions, thereby meeting the needs of multi-scenario tillage.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a rotary tiller blade, including a blade shaft, a blade holder and rotary tiller blades disposed on the blade shaft, and further including an angle adjustment mounting structure, wherein the rotary tiller blades are fixedly connected to the blade holder through the angle adjustment mounting structure, and the angle adjustment mounting structure can adjust and fix the angle of the rotary tiller blades.

[0006] Furthermore, the angle adjustment mounting structure includes a first connecting frame, a ball head seat, a spherical plug, a second connecting frame, and an angle locking mechanism. The first connecting frame is detachably connected to the blade holder, and the second connecting frame is detachably connected to the end of the rotary tiller blade. The ball head seat is fixed on the first connecting frame, and a spherical mounting chamber is provided on the ball head seat. The spherical plug is rotatably inserted into the spherical mounting chamber. The angle locking mechanism is installed on the ball head seat to lock and fix the spherical plug.

[0007] Furthermore, the ball joint is provided with an annular mounting groove coaxial with the ball joint. The angle locking mechanism includes multiple locking rods, a rotary drive source, and an annular drive disk. Multiple insertion holes are spaced apart on one axial plane of the ball joint. The insertion holes extend radially along the ball joint, pass through the annular mounting groove, and communicate with the outside of the ball joint cavity. A locking rod is inserted into each insertion hole, and each locking rod is provided with a plug rod. The drive disk is rotatably disposed in the annular mounting groove. Multiple curved arc-shaped guide grooves are provided on the drive disk. One end of the arc-shaped guide groove is close to the center of the ball joint, and the other end extends towards the edge of the ball joint. Each arc-shaped guide groove corresponds to one plug rod, and the plug rod can slide and engage with the arc-shaped guide groove. When the drive disk rotates counterclockwise, all the locking rods can be driven to move towards the center of the annular mounting groove through the arc-shaped guide grooves and the plug rods. The rotary drive source is connected to the drive disk and is used to drive the drive disk to rotate.

[0008] Furthermore, the rotary drive source includes a first gear, a second gear, a handle, and a locking member. The first gear is sleeved and fixed on the drive disc. The second gear is rotatably mounted on the ball head seat via a mounting bracket. The ball head seat has a process hole that connects the annular mounting groove to the outside. The second gear partially passes through the process hole and meshes with the first gear. The locking member is connected to the second gear and is used to lock and fix the second gear on the mounting bracket. The handle is located on the second gear and is used to manually drive the second gear to rotate.

[0009] Furthermore, the locking component is a locking screw, and a threaded hole extending through the height direction is provided on the second gear. The locking screw is threadedly connected to the threaded hole. Rotating the locking screw allows the end of the locking screw to abut against the mounting bracket.

[0010] Furthermore, the surface of the spherical plug is covered with multiple recesses, and the end of the locking rod can be inserted into the recesses.

[0011] Furthermore, the end face of the ball head is provided with an angle value in the circumferential direction, and the ball plug is provided with a reference scale line for indicating its rotation angle.

[0012] The beneficial effects of this utility model are: The rotary tiller blades described above have the following effects: 1. The working angle of the rotary tiller blades can be adjusted by adjusting the installation structure, thereby enabling rotary tillage in scenarios such as heavy clay soil, loose soil, and orchards; 2. While improving the stability of tillage depth, it can also extend the fatigue life of the blades, thereby further achieving the goal of saving costs. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 A schematic diagram of a rotary tiller blade provided in an embodiment of this utility model; Figure 2 for Figure 1 A detailed schematic diagram of point A in the middle; Figure 3 for Figure 1 A schematic diagram of the angle locking mechanism in the rotary tiller blades of the micro-tiller shown; Figure 4 for Figure 1 The diagram shown illustrates the locking lever in the locked state of the rotary tiller blades. Figure 5 for Figure 1 The diagram shown illustrates the locking lever in the unlocked state of the rotary tiller blades. Figure label: 100. Cutter shaft; 200. Cutter holder; 300. Rotary tiller blade; 400. Angle adjustment mounting structure; 410. First connecting frame; 420. Ball head seat; 430. Ball plug; 440. Second connecting frame; 450. Angle locking mechanism; 451. Locking rod; 452. Rotary drive source; 4521. First gear; 4522. Second gear; 4523. Handle; 4524. Locking element; 453. Drive disc; 454. Insert rod; 455. Arc-shaped guide groove. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0016] Please see Figures 1 to 5 This utility model provides a rotary tiller blade, including a blade shaft 100, a blade holder 200 disposed on the blade shaft 100, rotary tiller blades 300, and an angle adjustment mounting structure 400. The rotary tiller blades 300 are fixedly connected to the blade holder 200 through the angle adjustment mounting structure 400, and the angle adjustment mounting structure 400 can adjust and fix the angle of the rotary tiller blades 300.

[0017] Normally, the rotary tiller blades are used in accordance with normal operating procedures. When soil hardness or crop root conditions change, the operator can loosen the angle adjustment mounting structure by 400 degrees, manually rotate the rotary tiller blades by 300 degrees to the optimal tillage angle, and then relock them to adapt to different soil conditions.

[0018] This type of rotary tiller blade solves the problems of soil compaction or insufficient soil breaking caused by the fixed angle of traditional blades. It significantly reduces deep tillage resistance and improves fuel efficiency, while meeting the farming needs of various scenarios such as paddy fields, dry land, and orchards.

[0019] Specifically, the angle adjustment mounting structure 400 includes a first connecting frame 410, a ball head seat 420, a ball plug 430, a second connecting frame 440, and an angle locking mechanism 450. The first connecting frame 410 can be detachably connected to the blade holder 200, and the second connecting frame 440 can be detachably connected to the end of the rotary tiller blade 300. The ball head seat 420 is fixed on the first connecting frame 410, and a ball mounting cavity is provided on the ball head seat 420. The ball plug 430 can be rotatably inserted into the ball mounting cavity. The angle locking mechanism 450 is installed on the ball head seat 420 and is used to lock and fix the ball plug 430.

[0020] When the angle needs to be adjusted, the operator must first release the locking state of the angle locking mechanism 450. At this time, the ball plug 430 can rotate freely within the spherical mounting chamber of the ball head seat 420, thereby driving the connected second connecting frame 440 and rotary tiller blade 300 to change their angle. After adjusting to the required angle, the angle locking mechanism 400 is operated to generate a locking force acting on the ball plug 430, using friction to fix the ball plug 430 in the current position.

[0021] This method enables the ball joint structure to provide stepless angle adjustment, avoiding the limitations of traditional hole position adjustment.

[0022] It should be noted that, in the embodiments, both the first connecting bracket 410 and the second connecting bracket 440 can be connected by inserting a rod 454 and fastening screws, inserting the rod 454 into the blade holder 200 or the handle of the rotary tiller blade 300, and then fixing it by fastening screws.

[0023] Specifically, the ball joint 420 has an annular mounting groove coaxial with it. The angle locking mechanism 450 includes multiple locking rods 451, a rotary drive source 452, and an annular drive disk 453. Multiple insertion holes are spaced apart on one axial plane of the ball joint 420. These holes extend radially along the ball joint 420, pass through the annular mounting groove, and communicate with the outside of the ball joint 420's inner cavity. A locking rod 451 is inserted into each hole, and each locking rod 451 has a corresponding insertion rod 454. The drive disk 453 is rotatably mounted in the annular mounting groove. Inside, the drive disc 453 has multiple curved arc-shaped guide grooves 455. One end of the arc-shaped guide groove 455 is close to the center of the ball head seat, and the other end extends towards the edge of the ball head seat 420. Each arc-shaped guide groove 455 corresponds to a plug rod 454, and the plug rod 454 can slide and engage with the arc-shaped guide groove 455. When the drive disc 453 rotates counterclockwise, it can drive all the locking rods 451 to move towards the center of the annular mounting groove through the arc-shaped guide groove 455 and the plug rod 454. The rotation drive source 452 is connected to the drive disc 453 and is used to drive the drive disc 453 to rotate.

[0024] When locking is required, the rotary drive source 452 rotates the drive disk 453 counterclockwise. When the involute contour of the guide groove pushes the unlocking mechanism, the drive disk 453 rotates clockwise. The guide groove guides the insertion rod 454 to move outward, and the locking rod 451 disengages from contact.

[0025] This locking method ensures that the locking rods 451 lock synchronously, guaranteeing even force distribution on the ball head and preventing eccentric load failure. Furthermore, the involute guide groove provides a lever-amplifying effect, further enhancing the locking force. In this embodiment, the rotary drive source 452 includes a first gear 4521, a second gear 4522, a handle 4523, and a locking member 4524. The first gear 4521 is sleeved and fixed on the drive disk 453. The second gear 4522 is rotatably mounted on the ball head seat 420 through the mounting bracket. The ball head seat 420 has a process hole that connects the annular mounting groove to the outside. The second gear 4522 partially passes through the process hole and meshes with the first gear 4521. The locking member 4524 is connected to the second gear 4522 and is used to lock and fix the second gear 4522 on the mounting bracket. The handle 4523 is provided on the second gear 4522 and is used to manually drive the second gear 4522 to rotate.

[0026] Specifically, the locking component 4524 is a locking screw, and the second gear 4522 has a threaded hole that runs through the height direction. The locking screw is threadedly connected to the threaded hole. Rotating the locking screw allows the end of the locking screw to abut against the mounting bracket.

[0027] In use, rotating the handle 4523 drives the second gear 4522 to rotate, which in turn drives the first gear 4521 to rotate, thereby causing the drive disc 453 to rotate. After adjustment, tighten the locking screw to secure the mounting bracket and prevent the gears from reversing.

[0028] In practical implementation, the gear transmission ratio can be selected as 1:3 to achieve small-angle handle 4523 rotation to drive large-angle disc rotation.

[0029] In practical implementation, an array of recesses can be laser-machined on the surface of the ball plug 430. The end of the locking rod 451 is hardened and machined with matching protrusions. When the locking rod 451 retracts, the protrusions at the rod end embed into the recesses of the ball plug 430, forming a mechanical interlock. The interlocking structure significantly enhances the anti-slip capability.

[0030] In addition, an angle value is provided circumferentially on the end face of the ball head 420, and a reference scale line is provided on the ball plug 430 to indicate its rotation angle, such as a set of latitude lines parallel to the equatorial plane and a set of longitude lines connecting the two poles, and the angle value can be marked at the corresponding position.

[0031] When adjusting the angle, you can refer to the angle value and the scale line to adjust the angle of the ball plug 430 for further convenience.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A rotary tiller blade, comprising a cutter shaft, a cutter holder mounted on the cutter shaft, and rotary tiller blades, characterized in that, It also includes an angle-adjustable mounting structure, through which the rotary tiller blade is fixedly connected to the blade holder, and the angle-adjustable mounting structure can adjust and fix the angle of the rotary tiller blade.

2. The rotary tiller blades of the micro-tiller according to claim 1, characterized in that, The angle adjustment mounting structure includes a first connecting frame, a ball head seat, a spherical plug, a second connecting frame, and an angle locking mechanism. The first connecting frame is detachably connected to the blade holder, and the second connecting frame is detachably connected to the end of the rotary tiller blade. The ball head seat is fixed on the first connecting frame, and a spherical mounting compartment is provided on the ball head seat. The spherical plug is rotatably inserted into the spherical mounting compartment. The angle locking mechanism is installed on the ball head seat to lock and fix the spherical plug.

3. The rotary tiller blades of the micro-tiller according to claim 2, characterized in that, The ball joint has an annular mounting groove coaxial with it. The angle locking mechanism includes multiple locking rods, a rotary drive source, and an annular drive disc. Multiple insertion holes are spaced apart on one axial plane of the ball joint. These insertion holes extend radially along the ball joint, pass through the annular mounting groove, and connect the inner cavity of the ball joint to the outside. Each insertion hole houses a locking rod, and each locking rod has a corresponding insertion rod. The drive disc is rotatably mounted within the annular mounting groove. The drive disc has multiple curved arc-shaped guide grooves, one end of which is close to the center of the ball joint, and the other end extends towards the edge of the ball joint. Each arc-shaped guide groove corresponds to a insertion rod, and the insertion rod can slidably engage with the arc-shaped guide groove. When the drive disc rotates counterclockwise, it drives all the locking rods towards the center of the annular mounting groove via the arc-shaped guide grooves and the insertion rods. The rotary drive source is connected to the drive disc and drives its rotation.

4. The rotary tiller blades of the micro-tiller according to claim 3, characterized in that, The rotary drive source includes a first gear, a second gear, a handle, and a locking element. The first gear is sleeved and fixed on the drive disc. The second gear is rotatably mounted on the ball head seat via a mounting bracket. The ball head seat has a process hole that connects the annular mounting groove to the outside. The second gear partially passes through the process hole and meshes with the first gear. The locking element is connected to the second gear and is used to lock the second gear onto the mounting bracket. The handle is located on the second gear and is used to manually drive the second gear to rotate.

5. The rotary tiller blades of the micro-tiller according to claim 4, characterized in that, The locking component is a locking screw. A threaded hole is provided on the second gear in the height direction. The locking screw is threadedly connected to the threaded hole. Rotating the locking screw can cause the end of the locking screw to abut against the mounting bracket.

6. The rotary tiller blades of the micro-tiller according to claim 3, characterized in that, The surface of the spherical plug is covered with multiple recesses, and the end of the locking rod can be inserted into the recesses.

7. The rotary tiller blades of the micro-tiller according to claim 2, characterized in that, The ball head end face is provided with an angle value in the circumferential direction, and the ball plug is provided with a reference scale line for indicating its rotation angle.

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