A rotary tine set

Abstract

The utility model provides a kind of rotary tiller, it solves the main blade and vice blade of existing rotary tiller located at the same end of handle, there is the problem of large ploughing resistance, poor stability.It includes blade shaft and several fixed on the blade shaft seat, each seat is installed with rotary tiller, rotary tiller includes with seat connected handle, set in handle one end and used for ploughing main blade and set in handle other end and used for cutting grass vice blade, the radius of gyration of vice blade is less than the radius of gyration of main blade.Main blade and vice blade are located at different ends of handle, there is no simultaneous contact ground condition when ploughing, reduce ploughing resistance, reduce micro tiller fuel consumption;Main blade ploughing vice blade start balance, vice blade cut grass main blade start balance, greatly improve the stability of micro tiller working process;Vice blade can cut grass, so that single rotary tiller has the function of anti grass and ploughing.

Description

Technical Field

[0001] This utility model belongs to the field of tillage blade technology and relates to a rotary tillage blade assembly. Background Technology

[0002] Mini tillers are powered by small diesel or gasoline engines and are characterized by their light weight, small size, and simple structure. They are widely applicable to dry land, paddy fields, and orchards in plains, mountains, and hills. Equipped with appropriate implements, they can perform tillage, pumping, power generation, spraying, and sprinkler operations. They can also tow trailers for short-distance transport. Mini tillers can move freely in the fields, making them convenient for users to operate and store, eliminating the problem of large agricultural machinery being unable to access mountainous fields. They are the best alternative to oxen for farmers. For example, Chinese patent CN203912466U discloses an anti-winding rotary tiller blade, which indirectly increases the radius of the rotary tiller shaft by installing an anti-winding plate on the horizontal rotary tiller roller. However, this requires changing the rotary tiller roller structure, affecting the working quality of the rotary tiller, and the structure is relatively complex.

[0003] To this end, Chinese patent CN219938879U discloses a rotary tiller structure, including a curved blade with a front cutting part and a side cutting part, and also includes a secondary blade, which is fixed to the side cutting part. The blade surface of the secondary blade is perpendicular to the blade surface of the side cutting part. The secondary blade has a base perpendicular to the blade surface of the secondary blade, and the base has a first mounting hole. The side cutting part has a second mounting hole at a corresponding position. The secondary blade is installed on the side cutting part by bolts.

[0004] The aforementioned rotary tiller blade structure achieves anti-tangling by cutting weeds, but the secondary blade, the main cutting part, and the side cutting part are located at the same end of the curved blade handle. When tilling, the secondary blade, the main cutting part, and the side cutting part basically contact the ground at the same time, resulting in high tillage resistance and high fuel consumption of the micro tiller; moreover, it cannot play a dynamic balancing role and has poor stability. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a rotary tillage blade assembly that offers low tillage resistance and anti-weed entanglement functionality.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A rotary tiller assembly includes a blade shaft and several blade holders fixed on the blade shaft. Each blade holder is equipped with a rotary tiller blade. The rotary tiller blade includes a handle connected to the blade holder, a main blade located at one end of the handle for tilling the land, and a secondary blade located at the other end of the handle for cutting weeds. The rotation radius of the secondary blade is smaller than that of the main blade.

[0008] In the above-mentioned rotary tiller set, an interval area is formed between two adjacent blade holders. Each blade holder on both sides of the interval area has at least one main blade of a rotary tiller that bends toward one side of the interval area. The tillage trajectories of the main blades that bend toward the same interval area and are located on different blade holders do not overlap in the radial direction of the blade shaft.

[0009] The main blade located on one side of the interval area has a first tillage track, and the main blade located on the other side of the interval area has a second tillage track. The first tillage track and the second tillage track have an axial spacing to avoid soil trapping.

[0010] In the aforementioned rotary tillage blade assembly, the main blade has a main cutting edge on its rotating front side. The main cutting edge forms a guiding structure, which is configured to generate a component force that moves the weeds toward one side of the main blade during the rotary tillage process through interaction with the weeds.

[0011] Because the main blade has a large radius of rotation and a low rotation speed, it is not conducive to cutting weeds. Therefore, the blade line of the main blade is set to a specific curve. When it comes into contact with weeds, the component force applied by the main blade to the weeds can move the weeds to one side of the main blade, thus preventing the weeds from affecting the tillage depth of the main blade.

[0012] In the aforementioned rotary tiller set, each of the blade holders on both sides of the interval region has at least one secondary blade of a rotary tiller bent toward one side of the interval region. The tillage trajectories of the secondary blades bent toward the same interval region and located on different blade holders overlap with each other in the radial direction of the blade shaft.

[0013] The secondary blade located on one side of the interval area has a first cutting trajectory, and the secondary blade located on the other side of the interval area has a second cutting trajectory. The first cutting trajectory intersects with the second cutting trajectory to prevent weeds from entering the area within the secondary blade.

[0014] In the above-mentioned rotary tiller blade set, the main blade and the secondary blade of the same rotary tiller blade are both bent to one side of the same interval area, and the vertical distance from the end of the secondary blade away from the handle to the handle is greater than the vertical distance from the end of the main blade away from the handle to the handle.

[0015] In the above rotary tillage blade assembly, the plane where the secondary blade is located is perpendicular to the plane where the handle is located.

[0016] In the aforementioned rotary tillage blade assembly, a secondary blade edge is provided on the rotating front side of the secondary blade.

[0017] As the rotary tiller blades rotate, the main blade and the secondary blade can complete sequential cutting. Weeds that have moved to the side of the main blade are cut off by the secondary blade that rotates in afterward.

[0018] In the above-mentioned rotary tillage blade assembly, each blade holder is evenly provided with three rotary tillage blades, and the rotary tillage blades on two adjacent blade holders are arranged alternately.

[0019] In the above-mentioned rotary tiller blade assembly, the handle is provided with a first mounting hole, and the blade holder is provided with a corresponding second mounting hole. The handle is fixed to the blade holder by a locking bolt passing through the first mounting hole and the second mounting hole.

[0020] In the aforementioned rotary tiller blade assembly, the blade handle is provided with a clearance groove. The position of the clearance groove is adapted to the position of the blade shaft, and its purpose is to allow space for the blade shaft.

[0021] Compared with existing technologies, this rotary tiller blade assembly has the following advantages:

[0022] The first and second tillage tracks formed by the main blades, located on different sides of the interval area, have an axial gap, facilitating soil detachment from the rotary tiller blade assembly and preventing soil entanglement. The first and second cutting tracks formed by the secondary blades, located on different sides of the interval area, intersect along the axial direction of the blade shaft, forming a closed barrier to prevent weeds from entering the area within the secondary blades, thus achieving the purpose of anti-entanglement. The main blades and secondary blades are located at different ends of the handle, so they will not contact the ground simultaneously during tillage, reducing tillage resistance and lowering the mini-tiller's fuel consumption. When the main blade tills, the secondary blades start in a balanced manner, and when the secondary blades cut grass, the main blades start in a balanced manner, greatly improving the stability of the mini-tiller's operation. The secondary blades can cut grass, enabling a single rotary tiller blade to have both anti-grass entanglement and tillage functions. The blade line of the main blade is set to a specific curve, so when it comes into contact with weeds, the component force applied by the main blade to the weeds can move the weeds to one side of the main blade, ensuring tillage depth. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the rotary tiller blade assembly provided by this utility model.

[0024] Figure 2 This is an axial side view of the rotary tiller blade assembly provided by this utility model.

[0025] Figure 3 This is a side view of the rotary tiller blade assembly provided by this utility model.

[0026] Figure 4 This is a schematic diagram of the rotary tiller blade provided by this utility model.

[0027] Figure 5 This is a front view of the rotary tiller blade provided by this utility model.

[0028] Figure 6 This is a schematic diagram of the main blade of the present invention when used for grass skiing.

[0029] Figure 7This is a side view of the rotary tiller blade provided by this utility model.

[0030] In the diagram, 1 is the rotary tiller blade; 10 is the handle; 101 is the first mounting hole; 102 is the clearance groove; 11 is the main blade; 111 is the main cutting edge; 12 is the secondary blade; 121 is the secondary cutting edge; 2 is the blade shaft; and 3 is the blade holder. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1 The rotary tiller assembly shown includes a blade shaft 2 and four blade holders 3 fixed sequentially on the blade shaft. Each blade holder 3 is equipped with three rotary tiller blades 1. The three rotary tiller blades 1 on the same blade holder 3 are evenly distributed at equal angles, while the rotary tiller blades on two adjacent blade holders are staggered.

[0033] like Figure 4 As shown, the rotary tiller 1 includes a plate-shaped handle 10, one end of which is integrally formed with a main blade 11 for tilling the land. The main blade 11 is curved in a first direction, which is perpendicular to the plane of the handle 10. Figure 5 As shown, the main blade 11 has a main cutting edge 111 on its rotating front side, and the main cutting edge 111 forms a guiding structure, such as... Figure 6 As shown, the guiding structure is configured such that, during the rotary tiller's rotation, through interaction with the weeds, a component force F is generated that causes the weeds (such as straw) to move towards one side of the main blade 11. Under the action of this component force F, the weeds continuously move towards the end of the main blade 111 away from the handle 10 until the weeds are completely freed from the compression of the main blade 111. Figure 2 As shown, the rotation radius 'a' of the secondary blade is smaller than the rotation radius 'b' of the primary blade.

[0034] like Figure 4 As shown, the other end of the handle 10 is integrally formed with a secondary blade 12 for cutting weeds. The secondary blade 12 is also bent in the first direction, and the vertical distance from the end of the secondary blade 12 away from the handle 10 to the plane where the handle 10 is located is greater than the vertical distance from the end of the main blade 11 away from the handle 10 to the plane where the handle 10 is located. A secondary blade 121 is provided on the rotating front side of the secondary blade 12.

[0035] Specifically, such as Figure 7 As shown, the plane where the secondary blade 12 is located is perpendicular to the plane where the handle 10 is located, ensuring that the weeds will not slip away when the secondary blade 12 cuts the weeds.

[0036] like Figure 4 and Figure 5As shown, the tool holder 10 is provided with a relief groove 102, which cooperates with the tool shaft. A first mounting hole 101 is provided on both sides of the relief groove 102, and a second mounting hole is provided at the corresponding position of the tool holder 3. The tool holder 10 is fixed to the tool holder 3 by locking bolts passing through the first mounting hole 101 and the second mounting hole.

[0037] In this embodiment, as Figure 3 As shown, an interval region is formed between two adjacent blade holders 3. Each blade holder 3 on both sides of the interval region has at least one main blade 11 of a rotary tiller 1 that is bent toward one side of the interval region. The main blade 11 located on one side of the interval region has a first tillage track, and the main blade 11 located on the other side of the interval region has a second tillage track. The first tillage track and the second tillage track have an axial distance L to avoid soil trapping.

[0038] like Figure 3 As shown, each blade holder 3 on both sides of the interval area has at least one secondary blade 12 of rotary tillage blade 1 bent toward one side of the interval area. The secondary blade 12 located on one side of the interval area has a first cutting trajectory, and the secondary blade 12 located on the other side of the interval area has a second cutting trajectory. The first cutting trajectory and the second cutting trajectory intersect, and their intersection spacing is S, to prevent weeds from entering the area within the secondary blade 12.

[0039] When the rotary tiller blades rotate, the main blade 11 and the secondary blade 12 rotate along the centerline of the blade shaft 2. Because the main blade 11 has a large radius of rotation and a low rotation speed, it is not conducive to cutting weeds. Therefore, the cutting edge of the main blade 111 is set to a specific curve. When it comes into contact with weeds, the component force applied by the main blade 111 to the weeds can cause the weeds to move to one side of the main blade 11, thus preventing the weeds from affecting the tillage depth of the main blade 11.

[0040] The secondary blade 12 does not participate in tilling. Setting the rotation radius of the secondary blade 12 to be smaller than that of the main blade 11 will not affect the tillage depth of the main blade 11. When the rotary tiller advances, the main blade 111 and the secondary blade 121 can complete sequential cutting. Weeds that have moved to the side of the main blade 11 can be cut by the secondary blade 121.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A rotary tiller blade assembly, characterized in that, It includes a blade shaft (2) and several blade holders (3) fixed on the blade shaft (2). Each blade holder (3) is equipped with a rotary tiller (1). The rotary tiller (1) includes a handle (10) connected to the blade holder (3), a main blade (11) located at one end of the handle (10) for tilling the land, and a secondary blade (12) located at the other end of the handle (10) for cutting weeds. The rotation radius of the secondary blade (12) is smaller than that of the main blade (11).

2. The rotary tiller blade assembly according to claim 1, characterized in that, A gap is formed between two adjacent blade holders (3). Each blade holder (3) on both sides of the gap has at least one main blade (11) of a rotary tiller (1) that bends toward one side of the gap. The tillage trajectories of the main blades (11) that bend toward the same gap and are located on different blade holders (3) do not overlap in the radial direction of the blade shaft (2).

3. The rotary tiller assembly according to claim 1 or 2, characterized in that, The main blade (11) has a main cutting edge (111) on its rotating front side. The main cutting edge (111) forms a guiding structure, which is configured to generate a component force that moves the weeds toward one side of the main blade (11) through interaction with the weeds during the rotation process.

4. The rotary tiller blade assembly according to claim 2, characterized in that, Each blade holder (3) on both sides of the interval area has at least one secondary blade (12) of a rotary tiller (1) that bends toward one side of the interval area. The tillage trajectories of the secondary blades (12) that bend toward the same interval area and are located on different blade holders (3) overlap with each other in the radial direction of the blade shaft (2).

5. The rotary tiller blade assembly according to claim 4, characterized in that, Both the main blade (11) and the secondary blade (12) of the same rotary tiller (1) are bent toward one side of the same interval area. The vertical distance from the end of the secondary blade (12) away from the handle (10) to the handle (10) is greater than the vertical distance from the end of the main blade (11) away from the handle (10) to the handle (10).

6. The rotary tiller blade assembly according to claim 5, characterized in that, The plane containing the secondary blade (12) is perpendicular to the plane containing the handle (10).

7. The rotary tiller blade assembly according to claim 1, characterized in that, The secondary blade (12) has a secondary cutting edge (121) on its rotating front side.

8. The rotary tiller blade assembly according to claim 1, characterized in that, Each of the blade holders (3) is provided with three rotary tillage blades (1) evenly arranged, and the rotary tillage blades (1) on two adjacent blade holders (3) are arranged alternately.

9. The rotary tiller blade assembly according to claim 1, characterized in that, The tool holder (10) is provided with a first mounting hole (101), and the tool holder (3) is provided with a corresponding second mounting hole. The tool holder (10) is fixed to the tool holder (3) by a locking bolt passing through the first mounting hole (101) and the second mounting hole.

10. The rotary tiller blade assembly according to claim 1, characterized in that, The tool holder (10) is provided with a relief groove (102).

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