Rotary tillage cutter

Abstract

The utility model relates to the technical field of mini-tillers, in particular to a rotary tillage cutter on a mini-tiller, which comprises a cutter shaft and a cutter connected onto the cutter shaft, the cutter shaft is a hexagonal shaft, and the cutter comprises a hexagonal tube connected with the cutter shaft, connecting frames symmetrically arranged at two ends of the hexagonal tube and rotary tillage blades arranged at ends of the connecting frames. A cavity for soil to fly out is formed among the rotary tillage blades, the connecting frame and the hexagonal tube, the hexagonal tube is provided with a connecting hole and a fastener, the cutter shaft is provided with a plurality of grooves, and the fastener can penetrate through the connecting hole to be connected with the grooves so as to clamp the hexagonal tube and the cutter shaft. The device can effectively prevent the phenomenon that the mini-tiller cannot be normally used due to the fact that the mini-tiller is easily clamped by weeds or diluted soil during ploughing, and the ploughing width of the mini-tiller can be adjusted by adjusting the distance between the cutters. The device is simple in structure, reasonable in design and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-tillage machines, in particular to a rotary tillage cutter on a micro-tillage machine. Background Art

[0002] A micro-tillage machine is an agricultural machine used to cultivate farmland. It is mainly powered by a diesel engine or a gasoline engine. It is popular among users because of its small size, simple structure, easy operation, and significant effect in renovating and cultivating wasteland.

[0003] The cutting tools of existing micro-tillage machines consist of multiple blade assemblies spaced apart on a blade shaft. Each blade assembly is equipped with multiple rotary tilling blades, whose tips are bent to increase their contact area with the soil, thereby loosening the soil. However, these cutting tools have several problems: First, they require many rotary tilling blades to be grouped together on the blade shaft to increase the contact area with the soil and enhance the tillage effect. However, the dense arrangement of rotary tilling blades can easily become stuck in weeds or diluted soil, rendering the micro-tillage machine inoperable. Second, the spacing between the blades is fixed, so the micro-tillage machine can only operate within a fixed tillage width, which limits its application in narrow fields. Utility Model Content

[0004] In view of the above-mentioned defects, the utility model discloses a rotary tillage cutter, which mainly solves the technical problems that the existing micro-tillage machine is easily stuck by weeds or diluted soil when plowing the land and the tillage width of the cutter cannot be adjusted.

[0005] To achieve the above purpose, the present invention includes a cutter shaft and a cutter connected to the cutter shaft. The cutter shaft is a hexagonal shaft. The cutter includes a hexagonal tube connected to the cutter shaft, a connecting frame symmetrically arranged at both ends of the hexagonal tube, and a rotary tillage blade arranged on the end of the connecting frame. A cavity for soil to fly out is formed between the rotary tillage blade, the connecting frame and the hexagonal tube. The hexagonal tube is provided with a connecting hole and a fastener, and the cutter shaft is provided with multiple grooves. The fasteners can pass through the connecting holes and connect with the grooves to fix the hexagonal tube and the cutter shaft.

[0006] Beneficial effects: The tool in this solution is mainly composed of a hexagonal tube, a connecting frame, and a rotary tillage blade. The hexagonal tube is responsible for connecting to the cutter shaft, which is designed as a hexagonal shaft. In this way, the cutter shaft will not slide after being connected to the tool. Secondly, multiple grooves and fasteners are provided on the cutter shaft. Correspondingly, the hexagonal tube is provided with connecting holes. The fasteners can pass through the connecting holes and grooves to fix the hexagonal tube to the cutter shaft. In this way, the position of the tool on the cutter shaft can be adjusted by selecting different grooves to pass the fasteners through the connecting holes. The connecting frame is symmetrically arranged at both ends of the hexagonal tube, and the rotary tillage blade is arranged at the end of the connecting frame. A cavity is formed between the rotary tillage blade, the connecting frame, and the hexagonal tube for soil to fly out. This unique structure can prevent the micro-tiller from being stuck by weeds or diluted soil during operation.

[0007] Preferably, there are two cutting tools, which are symmetrically arranged at both ends of the cutting shaft.

[0008] Beneficial effect: This solution has two cutters, which are symmetrically arranged at both ends of the cutter shaft, which can increase the tillage width of the cutter and thus improve the efficiency of tillage.

[0009] Preferably, the connecting frame is welded into a cross shape by two brackets. The connecting frame is connected to the hexagonal tube after being deflected on the vertical plane. After the knife shaft is connected to the hexagonal tube, the ends of the two brackets of the connecting frame are respectively in contact with the ground.

[0010] Beneficial effect: the connecting frame is arranged in a cross shape. After the blade shaft is connected to the hexagonal tube, the ends of the two brackets of the connecting frame are in contact with the ground respectively, which is a prerequisite for the rotary tillage blade to form a certain angle with the ground.

[0011] Preferably, the rotary tillage blade is rectangular, and one end thereof is a cutting end. The length of the rotary tillage blade is greater than the distance between the connecting frames. The rotary tillage blade is provided at the four ends of the connecting frame, and when the rotary tillage blade contacts the ground, the cutting end thereof has a certain angle with the ground.

[0012] Beneficial effects: The rotary tillage blade of this solution is rectangular, which can increase the contact area with the soil; in addition, the rotary tillage blade is set at the four ends of the connecting frame, which ensures the efficiency of the micro-tiller when plowing the land, and one end of the rotary tillage blade is a cutting end. Due to the special connection state of the connecting frame, it can be ensured that the cutting end of the rotary tillage blade has a certain angle when contacting the ground, which is convenient for cutting weeds or plowing the soil.

[0013] Preferably, the fastener is a threaded rod, the groove is a threaded hole, and the threaded rod is threadedly connected to the threaded hole through the connecting hole to achieve a detachable connection between the hexagonal tube and the knife shaft.

[0014] Beneficial effect: In this solution, the fastener is set as a threaded rod and the groove is set with a threaded hole, which makes it more convenient to disassemble and assemble the tool and the tool shaft. When adjusting the tool distance, you only need to unscrew the threaded rod and reselect the appropriate threaded hole for connection, which is more convenient.

[0015] Preferably, the fastener is arranged in the groove and a compression spring is provided at the bottom thereof. The fastener can be extended and retracted up and down in the groove by the compression spring. When the compression spring is not compressed, the fastener partially extends out of the groove and the extended portion is wedge-shaped.

[0016] Beneficial effect: In this solution, the fastener is set in the groove, and the compression spring can make the fastener expand and contract up and down in the groove. In this way, when the hexagonal tube needs to be connected, the fastener can be compressed into the groove. After the connecting hole of the hexagonal tube is aligned with the groove on the knife shaft, the compression spring is reset, and the fastener is extended to fix the hexagonal tube and the knife shaft. In this way, the tool can be quickly installed and disassembled on the knife shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic diagram of the structure of the rotary tillage tool of the utility model;

[0019] Figure 2 This is a partial structural diagram of another form of the rotary tillage tool of the utility model;

[0020] Figure 3 This is another schematic diagram of the connection between the cutter shaft and the cutter of the rotary tillage tool of the present invention.

[0021] Explanation of the main reference numerals: 1. Cutter shaft; 11. Groove; 2. Cutter; 21. Hexagonal tube; 22. Connecting frame; 23. Rotary tillage blade; 24. Connecting hole; 25. Fastener; 26. Compression spring. DETAILED DESCRIPTION

[0022] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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, and therefore cannot be understood as a limitation on the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0025] As an embodiment of the present utility model:

[0026] A rotary tillage tool 2 in this embodiment mainly includes two parts, a tool shaft 1 and a tool 2.

[0027] refer to Figure 1 and Figure 2 The cutter shaft 1 can preferably be set as a hexagonal shaft with a regular hexagonal cross section. A plurality of grooves 11 are provided on one surface of the cutter shaft 1. The cutter 2 is mainly composed of a hexagonal tube 21, a connecting frame 22 and a rotary tiller blade 23. The hexagonal tube 21 is adapted to the cutter shaft 1. The advantage of setting the cross section of the two to be regular hexagonal is that the hexagonal shaft and the hexagonal tube 21 have more contact surfaces after being connected, and the stability of the connection will be better, preventing relative movement after the two are connected. The hexagonal tube 21 can be connected to the cutter shaft 1. Its function is to connect the cutter shaft 1 and the cutter 2 together. In addition, a connecting hole 24 is provided on the hexagonal tube 21, and a fastener 25 is also provided on the cutter shaft 1. After the hexagonal tube 21 is connected to the hexagonal shaft, the position of the connecting hole 24 is adjusted to correspond to the groove 11. Then the fastener 25 passes through the connecting hole 24 and connects to the groove 11 to fix the hexagonal tube 21 to the cutter shaft 1.

[0028] In addition, there are two sets of cutters 2, which are respectively arranged at both ends of the cutter shaft 1. If the spacing between the cutters 2 is to be adjusted, that is, the tillage width of the micro-tiller, the fasteners 25 can be removed, and the connecting holes 24 on the hexagonal tube 21 are adjusted to correspond to the appropriate grooves 11 on the cutter shaft 1, and then the fasteners 25 are used to connect them. Through the above operation method, the positions of the two sets of cutters 2 on the cutter shaft 1 can be adjusted, and the spacing between the two sets of cutters 2 can be increased or decreased, which can correspondingly increase or decrease the tillage width of the micro-tiller.

[0029] As another embodiment, the fastener 25 in this solution can be set as a bolt, and the groove 11 can be set as a threaded hole, which makes it more convenient to disassemble and fix the tool 2 and the tool shaft 1. When adjusting the distance between the two groups of tools 2, you only need to unscrew the threaded rod and reselect a suitable threaded hole for connection. This makes the operation more convenient and the connection more stable.

[0030] The connecting frame 22 is welded together from two brackets. The connecting frame 22 is cross-shaped and symmetrically arranged at both ends of the hexagonal tube 21. The connecting frame 22 is deflected at a certain angle in the vertical plane and then connected to the hexagonal tube 21. After the cutter shaft 1 is connected to the hexagonal tube 21, the ends of the two brackets of the connecting frame 22 can respectively contact the ground. This is the prerequisite for the rotary tilling blade 23 to form a certain angle with the ground. The rotary tilling blade 23 is rectangular, with its two wide sides connected to the ends of the two connecting frames 22 and one bracket, and one end of its long side is a blade end, which is responsible for contacting the ground and reclaiming wasteland. In addition, the rotary tilling blade 23 is set at all four ends of the connecting frame 22, which ensures the efficiency of the micro-tiller when plowing the land. Due to the special connection state of the connecting frame 22, when the cutter shaft 1 rotates, when the blade end of the rotary tilling blade 23 contacts the ground, it can form a certain angle with the ground, which is convenient for cutting weeds or plowing the soil.

[0031] In addition, reference Figure 1 The connection between the rotary tillage blade 23, the connecting frame 22 and the hexagonal tube 21 can form a cavity therebetween, which facilitates the flying out of the soil during tillage, thereby preventing the tool 2 from being stuck by weeds or diluted soil.

[0032] Regarding the usage and working principle of this rotary tillage tool 2: After the cutter shaft 1 rotates, when the tip of the rotary tillage blade 23 contacts the ground, it can form a certain angle with the ground, which is convenient for cutting weeds and turning the soil. Then the tip of the blade penetrates into the soil and digs up the soil. At this time, the soil temporarily stagnates in the cavity. As the rotary tillage blade 23 continues to rotate, the soil is thrown out of the cavity due to inertia. Therefore, this special structure can prevent the cutter 2 from being stuck by weeds or diluted soil. If it is necessary to cultivate a special field and adjust the tillage width of the micro-tiller, the spacing between the two sets of cutters 2 on the cutter shaft 1 can be adjusted. Remove the fastener 25 on the cutter 2, adjust the connecting hole 24 on the hexagonal tube 21 to correspond to the appropriate groove 11 on the cutter shaft 1, and then pass the fastener 25 through the connecting hole 24 to connect it to the groove 11 to complete the adjustment of the tillage width of the micro-tiller.

[0033] As another preferred embodiment of the present invention:

[0034] refer to Figure 3The difference from the above embodiment is that the fastener 25 in this embodiment can be set in the groove 11. A compression spring 26 is installed at the bottom of the fastener 25. When the compression spring 26 is not compressed, the fastener 25 can partially extend out of the groove, and this extended portion is wedge-shaped. The fastener 25 can be extended and retracted up and down in the groove 11 by the compression spring 26. The portion of the fastener 25 that extends out of the groove can be completely placed in the groove when the compression spring 26 is compressed. When the tool 2 needs to be connected to the tool shaft 1, the hexagonal tube 21 moves radially along the tool shaft 1, compressing the fastener 25 into the groove 11 via the wedge surface. After the connection hole 24 on the hexagonal tube 21 aligns with the groove 11, the compression spring 26 returns to its original position, ejecting the fastener 25 from the groove 11, thus completing the connection between the tool 2 and the tool shaft 1.

[0035] In summary, the rotary tillage blade disclosed in this application can effectively prevent a micro-tiller from becoming stuck in weeds or diluted soil during tillage, thereby preventing it from functioning properly. Furthermore, the spacing between the blades can be adjusted to adjust the tillage width of the micro-tiller. This device has a simple structure, a reasonable design, and is easy to use.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary tillage tool, comprising a cutter shaft (1) and a cutter (2) connected to the cutter shaft (1), characterized in that: The cutter shaft (1) is a hexagonal shaft, and the cutter (2) comprises a hexagonal tube (21) connected to the cutter shaft (1), a connecting frame (22) symmetrically arranged at both ends of the hexagonal tube (21), and a rotary tillage blade (23) arranged on the end of the connecting frame (22); a cavity for soil to fly out is formed between the rotary tillage blade (23), the connecting frame (22), and the hexagonal tube (21); a connecting hole (24) is provided on the hexagonal tube (21); a plurality of grooves (11) and fasteners (25) are provided on the cutter shaft (1); the fasteners (25) can pass through the connecting hole (24) and be connected to the grooves (11) to fixedly connect the hexagonal tube (21) and the cutter shaft (1).

2. The rotary tillage tool according to claim 1, characterized in that: There are two cutters (2), which are symmetrically arranged at both ends of the cutter shaft (1).

3. The rotary tillage tool according to claim 1 or 2, characterized in that: The connecting frame (22) is welded into a cross shape by two brackets. The connecting frame (22) is connected to the hexagonal tube (21) after being deflected on a vertical plane. After the knife shaft (1) is connected to the hexagonal tube (21), the ends of the two brackets of the connecting frame (22) are respectively in contact with the ground.

4. The rotary tillage tool according to claim 3, characterized in that: The rotary tillage blade (23) is rectangular, and one end thereof is a cutting edge. The length of the rotary tillage blade (23) is greater than the distance between the connecting frames (22). The rotary tillage blade (23) is provided at the four ends of the connecting frame (22), and when the rotary tillage blade (23) contacts the ground, the cutting edge forms a certain angle with the ground.

5. The rotary tillage tool according to claim 1, characterized in that: The fastener (25) is a bolt, the groove (11) is a threaded hole, and the bolt is threadedly connected to the threaded hole through the connecting hole (24) to achieve a detachable connection between the hexagonal tube (21) and the knife shaft (1).

6. The rotary tillage tool according to claim 1, characterized in that: The fastener (25) is arranged in the groove (11) and a compression spring (26) is provided at the bottom thereof. The fastener (25) can be extended and retracted up and down in the groove (11) by the compression spring (26). When the compression spring (26) is not compressed, the fastener (25) partially extends out of the groove (11), and the extended portion is in a wedge shape.

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