Ploughing cutter and anti-winding cutter group of mini-tiller

Abstract

The utility model provides a tilling cutter and an anti-winding cutter set of a mini-tiller, and belongs to the technical field of mini-tiller cutters. The problems that in an existing mini-tiller anti-winding cutter set, the stress strength of a tilling cutter is small, the tilling width is small, and work is unstable are solved. The anti-winding cutter set of the mini-tiller comprises a cutter shaft, first cutter plates are fixed to the two ends of the cutter shaft respectively, a plurality of tilling cutters are fixed to the first cutter plates, the tilling cutters located on the same first cutter plate are evenly distributed in the circumferential direction of the cutter shaft, and a plurality of second cutter plates are fixedly connected to the portion, between the two first cutter plates, of the cutter shaft at intervals. Each second cutter plate is fixedly provided with one tilling cutter, the tilling cutters located on the different second cutter plates are spirally distributed in the length direction of the cutter shaft and evenly distributed in the circumferential direction of the cutter shaft, and the tilling cutters are fixed through two screws. The tilling cutters fixed on different second cutter plates are arranged in a crossed manner, so that the tilling width is increased, the machine is stable when going down to the ground, the ground breaking effect is better, the vibration of the machine is small, and the operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of micro ploughing machine cutter, and relates to a ploughing cutter and micro ploughing machine anti-entangling cutter group. BACKGROUND

[0002] The micro ploughing machine is powered by a small diesel engine or gasoline engine, has the characteristics of light weight, small size and simple structure, and is widely applicable to dry land, paddy field and orchard in plain, mountainous area and hilly area. When matched with corresponding tools, the micro ploughing machine can be used for ploughing, pumping, power generation, pesticide spraying and irrigation, and can also tow a trailer for short-distance transportation. The micro ploughing machine can be freely used in the field, is convenient for users to use and store, and eliminates the trouble of large agricultural machinery that cannot enter the field in the mountainous area, and is the best choice for replacing cattle ploughing for consumers.

[0003] At present, the rotary ploughing cutter of the micro ploughing machine sold on the market is mostly assembled with a blade on a shaft sleeve, such as the anti-entangling cutter for micro ploughing machine disclosed in the Chinese patent [authorized publication number CN 216752664U], which comprises a cutter bar, installation plates are respectively connected and fixed at both ends of the cutter bar, a plurality of installation blocks are connected and fixed between the two installation plates in a spaced manner, the installation blocks are provided with fixed ends and are respectively connected and fixed with blades, limiting flanges are respectively arranged on both sides of the installation blocks and can be supported on both sides of the inner end of the blade, and the rotation of the blade can be better prevented.

[0004] The bending angle of the blade of the above anti-entangling cutter is large, the resistance is large when breaking soil, the resistance of the machine is large, and the machine often shakes and is unstable; the installation block is provided with a flange, the processing is complex, and the hardness of the installation block is required to be high, so that the cost is high. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a ploughing cutter with small resistance when breaking soil.

[0006] A micro ploughing machine anti-entangling cutter group with high ploughing efficiency is also provided.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] The ploughing cutter comprises a cutter handle and a blade, the blade comprises a first bending part bent towards the back and a second bending part bent towards one side, a cutting edge is arranged at the front part of the first bending part, a soil breaking edge is arranged at the front part of the second bending part, the cutting edge and the soil breaking edge jointly form a blade edge of the blade, and only the soil breaking edge contacts the soil when breaking soil.

[0009] The first bending part is located between the second bending part and the shank, and is bent towards the back with a small bending range, so that the cutting edge arranged at the front of the first bending part protrudes forward with a small range, and the cutting edge is away from the soil when the plough blade breaks the soil, so that the cutting edge does not participate in breaking the soil; the second bending part is bent with a small bending range relative to the first bending part, and is more beneficial to breaking the soil.

[0010] In the above plough blade, two mounting holes are arranged on the shank.

[0011] In the above plough blade, the distance between the two mounting holes is less than or equal to 50 mm. Since two mounting holes are arranged, the shank can be mounted on the cutter plate of the anti-winding cutter group through two screws, and the distance between the two mounting holes is small, so that the stress intensity of the shank is large.

[0012] In the above plough blade, the back of the end of the blade away from the shank has a clearance. Due to the existence of the clearance, the resistance of the blade when it is on the ground is small.

[0013] In the above plough blade, the back of the shank has a contact plane for contacting the shaft. By contacting the surface on the shaft through the contact plane, the stress capacity of the shank is good.

[0014] The micro ploughing machine anti-winding cutter group comprises a shaft, first cutter plates fixed at both ends of the shaft, a plurality of above-mentioned plough blades fixed on the first cutter plates, the plurality of plough blades on the same first cutter plate being uniformly distributed along the circumference of the shaft, a plurality of second cutter plates fixed on the shaft between the two first cutter plates, each second cutter plate having one above-mentioned plough blade fixed thereon, the plurality of plough blades on different second cutter plates being spirally distributed along the length of the shaft and uniformly distributed along the circumference of the shaft, and the plough blades being fixed through two screws.

[0015] In the above micro ploughing machine anti-winding cutter group, the first cutter plate is a square cutter plate, a connecting hole is arranged in the center of the first cutter plate, and the shaft is arranged in and fixed in the connecting hole.

[0016] In the above micro ploughing machine anti-winding cutter group, three plough blades are arranged on the first cutter plate.

[0017] In the above micro ploughing machine anti-winding cutter group, the second cutter plate is a semicircular arc cutter plate, and the second cutter plate has a notch matched with the shape of the shaft.

[0018] In the above micro ploughing machine anti-winding cutter group, the shaft is a regular hexagonal prism.

[0019] In the above micro ploughing machine anti-winding cutter group, three anti-winding plates are arranged on the periphery of the shaft and on the inner side of the plough blades, the anti-winding plates are uniformly distributed along the circumference of the shaft, the two ends of the anti-winding plates are fixed with the first cutter plates, and the middle part of the anti-winding plate is fixed with one of the second cutter plates.

[0020] The anti-tangling plate can be set parallel to the cutter shaft and installed in the anti-tangling cutter assembly for paddy field operations. This prevents the machine from sinking and also prevents the grass from getting tangled. Alternatively, the anti-tangling plate can be set at an angle relative to the cutter shaft for use in anti-tangling cutter assemblies for dryland operations. This makes it easier to lay the grass down, resulting in a better anti-tangling effect.

[0021] The anti-wrap board has a flange, which not only strengthens the structural strength of the anti-wrap board, but also scrapes off the grass that is about to get wrapped around it.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The distance between the two mounting holes on the blade handle is less than or equal to 50mm. After mounting it on the blade plate, the handle is more stressed and less likely to break from the mounting holes. The blade has a small bending range, and the blade tip cuts into the soil smoothly, quickly, and with little resistance. The blades fixed on different second blade plates are arranged in a cross pattern, increasing the tillage width, making it smoother when moving through the soil, improving the soil breaking effect, reducing machine vibration, and making operation easier. An anti-tangling plate is included to prevent tangling with weeds when working in weedy areas. Whether working in dry land or paddy fields, this blade provides consistent left-right movement when mounted on the machine, greatly enhancing stability, reducing machine load, and increasing durability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the tillage blade provided by this utility model.

[0025] Figure 2 This is a schematic diagram showing the relationship between the cutter shaft, the first cutter plate, and the second cutter plate.

[0026] Figure 3 This is a partial structural schematic diagram of the anti-tangling knife assembly provided by this utility model.

[0027] Figure 4 This is a schematic diagram of another part of the anti-tangling knife assembly provided by this utility model.

[0028] Figure 5 This is a side view of the anti-tangling knife assembly provided by this utility model.

[0029] Figure 6 This is a schematic diagram of the anti-tangling knife assembly provided by this utility model.

[0030] Figure 7 This is a schematic diagram of the structure of the first blade provided by this utility model.

[0031] Figure 8 This is a schematic diagram of the structure of the second blade provided by this utility model.

[0032] Figure 9 This is a schematic diagram of the structure of the anti-entanglement plate in the anti-entanglement knife assembly provided by this utility model when it is tilted.

[0033] In the diagram, 1 is the tiller blade; 11 is the handle; 111 is the mounting hole; 112 is the contact surface; 12 is the blade; 121 is the first curved part; 122 is the second curved part; 123 is the clearance opening; 13 is the blade edge; 131 is the cutting edge; 132 is the soil-breaking edge; 2 is the blade shaft; 3 is the first blade plate; 31 is the connecting hole; 32 is the first hole; 4 is the second blade plate; 41 is the notch; 42 is the second hole; 5 is the anti-tangling plate; and 51 is the flange. Detailed Implementation

[0034] 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.

[0035] Example 1

[0036] like Figure 1 The tiller shown includes a handle 11 and a blade 12. The handle 11 has two mounting holes 111, 50mm apart. Two screws mount the handle 11 to the blade plate of the anti-tangle blade assembly. The small distance between the two mounting holes 111 increases the load-bearing capacity of the handle 11. Figure 1 As shown, a contact surface 112 for contacting the tool shaft 2 is provided on the back of the tool holder 11. By contacting the surface of the tool shaft 2 with the contact surface 112, the force-bearing capacity of the tool holder 11 is improved.

[0037] like Figure 1 As shown, the blade 12 includes a first curved portion 121 that bends backward and a second curved portion 122 that bends to one side. The first curved portion 121 is located between the second curved portion 122 and the handle 11. The front part of the first curved portion 121 is provided with a cutting edge 131, and the front part of the second curved portion 122 is provided with a soil-breaking edge 132. The cutting edge 131 and the soil-breaking edge 132 together constitute the blade 13 of the blade 12. When breaking the soil, only the soil-breaking edge 132 contacts the soil.

[0038] The first curved section 121 bends towards the back with a small curvature, causing the cutting blade 131 located at the front of the first curved section 121 to protrude forward slightly. When the tiller breaks the soil, the cutting blade 131 is a certain distance away from the soil and does not participate in breaking the soil. The second curved section 122 has a smaller curvature than the first curved section 121, which is more conducive to breaking the soil.

[0039] like Figure 1 As shown, the back of the end of the blade 12 furthest from the handle 11 is cut off to form a clearance opening 123, which reduces the resistance when the blade 12 touches the ground. The clearance opening 123 is curved on the side closest to the blade 12, meaning the back of the blade tip is arc-shaped. Because the back of the blade tip is arc-shaped, the blade tip experiences less resistance when it touches the ground, resulting in better soil breaking and less resistance and vibration for the tiller.

[0040] Embodiment two

[0041] As Figure 6 shown in the figure, the micro tiller anti-winding knife set comprises a knife shaft 2, as Figure 2 shown, both ends of the knife shaft 2 are fixed with a first knife plate 3, as Figure 3 shown, three tillage knives 1 are fixed on the first knife plate 3, and a plurality of tillage knives 1 on the same first knife plate 3 are evenly distributed along the circumferential direction of the knife shaft 2. As Figure 2 shown, six second knife plates 4 are fixed on the knife shaft 2 between the two first knife plates 3, as Figure 4 shown, one of the tillage knives 1 is fixed on each second knife plate 4, as Figure 4 and Figure 5 shown, a plurality of tillage knives 1 on different second knife plates 4 are spirally distributed along the length direction of the knife shaft 2 and evenly distributed along the circumferential direction of the knife shaft 2, and the tillage knives 1 are fixed by two screws.

[0042] The tillage knives 1 can be ordinary tillage knives 1 or the tillage knives 1 in embodiment one.

[0043] As Figure 7 shown, the first knife plate 3 is a square knife plate, and a connecting hole 31 is arranged in the center of the first knife plate 3, and the knife shaft 2 is arranged in and fixed in the connecting hole 31. As Figure 2 and Figure 4 shown, the face of the square knife plate welded to the knife shaft 2 is perpendicular to the axis of the knife shaft 2.

[0044] As Figure 7 shown, six holes one 32 are arranged on the first knife plate 3, corresponding to the mounting holes 111 of the three tillage knives 1 respectively.

[0045] As Figure 8 shown, the second knife plate 4 is a semicircular arc knife plate, and the second knife plate 4 has a notch 41 matched with the shape of the knife shaft 2, due to the notch 41, the second knife plate 4 can be quickly positioned on the knife shaft 2, and the stability of the second knife plate 4 can be further enhanced, and the second knife plate 4 can be prevented from rotating due to improper welding. The face of the semicircular arc knife plate welded to the knife shaft 2 is perpendicular to the axis of the knife shaft 2.

[0046] As Figure 8 shown, two holes two 42 are arranged on the second knife plate 4, corresponding to the two mounting holes 111 of the tillage knives 1.

[0047] As Figures 2-4 shown, the knife shaft 2 is a regular hexagonal prism, the connecting hole 31 is a regular hexagon, and the notch 41 has three faces, which are tightly attached to the adjacent three faces of the knife shaft 2 respectively.

[0048] As Figure 6As shown, three anti-tangling plates 5 are provided on the periphery of the blade shaft 2 and on the inner side of the tiller blade 1, evenly distributed along the circumference of the blade shaft 2. The two ends of the anti-tangling plates 5 are fixedly connected to the first blade plate 3, and the middle part of the anti-tangling plates 5 is fixedly connected to one of the second blade plates 4.

[0049] like Figure 6 As shown, the anti-tangling plate 5 is arranged parallel to the cutter shaft 2. Installing it in the anti-tangling cutter assembly for paddy field operations prevents the machine from sinking, allowing it to move smoothly and operate easily, while also preventing grass from tangling. Figure 6 As shown, the anti-wrap plate 5 has a flange 51, which not only strengthens the structural strength of the anti-wrap plate 5, but also scrapes off the grass that is about to wrap around the anti-wrap plate 5.

[0050] In this embodiment, the blade shaft 2 of the anti-tangling blade assembly is lengthened, so that the single-side tillage width of the micro-tiller reaches 509mm-600mm, which reduces the load in terms of structure. Compared with the traditional micro-tiller's anti-tangling blades which only have a single-side tillage width of 420mm, the working efficiency is greatly improved.

[0051] Example 3

[0052] The structural principle of this embodiment is basically the same as that of Embodiment 1, except that, as Figure 9 As shown, the anti-tangling plate 5 is inclined relative to the cutter shaft 2. It is used for anti-tangling cutter sets in dryland operations, which is more conducive to laying down grass. When the cutter set is working, the anti-tangling plate rotates in a spiral conical shape, which has a better anti-tangling effect. In addition, it reduces the resistance of the machine and makes it easier to operate.

[0053] 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 tillage blade, characterized in that, The blade (12) includes a handle (11) and a blade (12). The blade (12) includes a first curved portion (121) that bends backward and a second curved portion (122) that bends to one side. The front part of the first curved portion (121) is provided with a cutting edge (131), and the front part of the second curved portion (122) is provided with a soil-breaking edge (132). The cutting edge (131) and the soil-breaking edge (132) together constitute the blade (13) of the blade (12). When breaking the soil, only the soil-breaking edge (132) contacts the soil.

2. The tillage blade according to claim 1, characterized in that, The tool holder (11) has two mounting holes (111).

3. The tillage blade according to claim 2, characterized in that, The distance between the two mounting holes (111) is less than or equal to 50 mm.

4. The tillage blade according to claim 1, characterized in that, The back of the handle (11) has an abutting surface (112) for abutting against the cutter shaft (2).

5. The tillage blade according to claim 1, characterized in that, The blade (12) has a relief opening (123) on the back of the end away from the handle (11).

6. A blade anti-tangling assembly for a micro-tiller, characterized in that, The device includes a blade shaft (2), with a first blade plate (3) fixed at both ends of the blade shaft (2). Multiple tillage blades (1) as described in any one of claims 1-5 are fixed on the first blade plate (3). The multiple tillage blades (1) located on the same first blade plate (3) are evenly distributed along the circumference of the blade shaft (2). Several second blade plates (4) are fixedly connected at intervals on the blade shaft (2) between two first blade plates (3). Each second blade plate (4) is fixed with a tillage blade (1) as described in any one of claims 1-5. Several tillage blades (1) located on different second blade plates (4) are spirally distributed along the length direction of the blade shaft (2) and evenly distributed along the circumference of the blade shaft (2). The tillage blades (1) are fixed by two screws.

7. The anti-tangling blade assembly for a micro-tiller according to claim 6, characterized in that, The first blade plate (3) has a connecting hole (31) in the center, and the blade shaft (2) passes through and is fixed in the connecting hole (31).

8. The anti-tangling blade assembly for a micro-tiller according to claim 6, characterized in that, The second blade (4) has a notch (41) that matches the shape of the blade shaft (2).

9. The anti-tangling blade assembly for a micro-tiller according to claim 6, 7, or 8, characterized in that, The cutter shaft (2) is a regular hexagonal prism.

10. The anti-tangling blade assembly for a micro-tiller according to claim 6, characterized in that, Three anti-tangling plates (5) are provided on the periphery of the blade shaft (2) and on the inner side of the tiller (1), evenly distributed along the circumference of the blade shaft (2). The two ends of the anti-tangling plates (5) are fixedly connected to the first blade plate (3), and the middle part of the anti-tangling plates (5) is fixedly connected to one of the second blade plates (4).

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