Novel rotary blade

Abstract

The utility model relates to the technical field of rotary cultivators, and discloses a novel rotary blade which comprises a rotary blade, the rotary blade is composed of a straight blade body and an arc blade body, the straight blade body is arranged on the front portion of the rotary blade and used for achieving linear cutting, and the arc blade body and the straight blade body are connected to form the whole rotary blade and used for enhancing soil disturbance in the ploughing process. The tooth block is arranged below the rotary blade and is used for cutting a hard soil layer; the reinforcing plates are arranged on the two sides of the rotary blade and used for enhancing the structural strength; and the mounting head is fixedly connected with the reinforcing plate and is used for fixing the rotary blade on a cutter shaft of the rotary cultivator. The straight cutter body and arc cutter body integrated forging structure is adopted, the effects of small cutting resistance, high soil penetrating efficiency and thorough ploughing are achieved, the soil breaking capacity and operation adaptability are enhanced through the tooth blocks, meanwhile, the reinforcing plates improve the overall structural strength and impact resistance, and through cooperation of the structures, the soil breaking efficiency is improved. And the effects of high operation efficiency and high stability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, and in particular to a novel rotary tiller blade. Background Technology

[0002] Rotary tillers, as agricultural machinery components, are widely used in tillage operations, playing a crucial role, especially in turning, loosening, and weeding. They typically use rotational motion to agitate the soil, loosening it and promoting root growth. In agricultural production, the efficiency and performance of rotary tillers directly affect tillage quality and operational efficiency. With the development of agricultural mechanization, the design of rotary tillers has been continuously improved towards higher efficiency, durability, and lower energy consumption. To meet the needs of different soil conditions and crop types, the shape, material, and working principle of rotary tillers have been diversified and optimized.

[0003] Existing rotary tillers typically employ fixed or adjustable blade structures, with blades mostly made of high-hardness alloy steel to enhance wear resistance and lifespan. Some rotary tillers also have surface coatings to improve corrosion resistance and can be adapted to different soil environments and operational needs by adjusting the blade installation angle or rotation speed. However, the common blade structure results in significant cutting resistance, leading to low soil penetration efficiency, especially in hard soils or areas with abundant weeds, resulting in insufficient tillage. Therefore, a new type of rotary tiller is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a new type of rotary tiller blade, which aims to improve the problem of high cutting resistance in the blade structure of the existing technology, resulting in low soil penetration efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A new type of rotary tiller blade includes:

[0007] The rotary tiller blade consists of a straight blade and an arc blade. The straight blade is located at the front of the rotary tiller blade and is used to achieve linear cutting. The arc blade is connected to the straight blade to form an integral rotary tiller blade, which is used to enhance soil disturbance during tillage.

[0008] Tooth blocks, located below the rotary tiller blades, are used to cut hard soil layers;

[0009] Reinforcing plates are installed on both sides of the rotary tiller blades to enhance structural strength;

[0010] The mounting head is fixedly connected to the reinforcing plate and is used to fix the rotary tiller blades to the cutter shaft of the rotary tiller.

[0011] Bolt holes are located inside the rotary tiller blades and are used to connect bolts.

[0012] As a further description of the above technical solution:

[0013] The toothed blocks are located on the underside of the straight and curved blades and are distributed as multiple serrated protrusions along the length of the blade.

[0014] As a further description of the above technical solution:

[0015] The reinforcing plate is arc-shaped and connected to the straight blade.

[0016] As a further description of the above technical solution:

[0017] The straight blade and the curved blade are formed by integral forging.

[0018] As a further description of the above technical solution:

[0019] Both the straight and curved blades are composed of a base layer, an intermediate layer, and a surface layer.

[0020] As a further description of the above technical solution:

[0021] The surface layer is made of WC-Co based powder metallurgy material with a hardness value of HRA88 or higher, which is used to improve the service life of rotary tillers in high-intensity working environments.

[0022] As a further description of the above technical solution:

[0023] The intermediate layer is a Ni-based alloy layer, which serves as a thermal expansion buffer layer to prevent delamination or peeling between the surface layer and the base layer due to differences in material properties.

[0024] As a further description of the above technical solution:

[0025] The base layer is made of 40Cr medium carbon steel and is used to support the stability of the entire blade structure.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, the straight blade and the curved blade are forged into one piece, which achieves the effects of low cutting resistance, high soil penetration efficiency and thorough tillage. The toothed blocks enhance the soil breaking ability and operational adaptability, while the reinforcing plate improves the overall structural strength and impact resistance. Through the cooperation between the above structures, the effect of high operating efficiency and strong stability is achieved.

[0028] 2. In this utility model, the blade adopts a multi-layer composite structure of WC-Co surface layer, Ni-based alloy intermediate layer and 40Cr base layer, which has excellent wear resistance, thermal stress buffering capacity and structural support performance, effectively improving the service life and working efficiency of rotary tillers in high-intensity working environments and reducing maintenance frequency. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of a novel rotary tiller blade proposed in this utility model;

[0030] Figure 2 This is a side view of a novel rotary tiller blade proposed in this utility model;

[0031] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 4 This is a schematic diagram of the internal structure of a novel rotary tiller blade proposed in this utility model.

[0033] Legend:

[0034] 1. Straight blade; 2. Curved blade; 3. Tooth block; 4. Reinforcing plate; 5. Bolt hole; 6. Mounting head; 7. Base layer; 8. Intermediate layer; 9. Surface layer. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figures 1-3This utility model provides an embodiment of a novel rotary tiller, comprising: a rotary tiller blade composed of a straight blade 1 and an arc blade 2. The straight blade 1 is located at the front of the rotary tiller blade and is used to achieve linear cutting, initially splitting the soil, effectively reducing soil resistance, and improving the blade's soil entry efficiency. The arc blade 2 is connected to the straight blade 1 to form an integral rotary tiller blade, used to enhance soil disturbance during tillage, achieving a more thorough crushing and turning effect during tillage, which is beneficial to improving soil aeration and water content uniformity. The straight blade 1 and the arc blade 2 are integrally forged. Tooth blocks 3 are located below the rotary tiller blade and are used to cut hard soil layers. The tooth blocks 3 are located between the straight blade 1 and the arc blade 2. The lower side of the blade has multiple serrated protrusions distributed along its length, providing multi-point contact advantages. This allows the blade to cut through hard soil layers or debris layer by layer as it rotates, thereby enhancing its overall soil-breaking ability and improving operational reliability and adaptability. A reinforcing plate 4, located on both sides of the rotary tiller blade, is used to strengthen the structure. The reinforcing plate 4 is arc-shaped and connected to the straight blade 1, effectively preventing deformation caused by high-speed rotation or impact, and improving the blade's resistance to lateral impact. A mounting head 6 is fixedly connected to the reinforcing plate 4 to secure the rotary tiller blade to the rotary tiller's shaft. Bolt holes 5 are located inside the rotary tiller blade for connecting bolts, enabling quick installation and disassembly and optimizing maintenance efficiency.

[0037] Reference Figure 1 and Figure 4 Both the straight blade 1 and the curved blade 2 are composed of a base layer 7, an intermediate layer 8, and a surface layer 9. The surface layer 9 is made of WC-Co based powder metallurgy material with a hardness value of HRA88 or higher, which is used to improve the service life of the rotary tiller in high-intensity working environments. The intermediate layer 8 is a Ni-based alloy layer, which is used as a thermal expansion buffer layer to prevent delamination or peeling between the surface layer 9 and the base layer 7 due to differences in material properties. The base layer 7 is made of 40Cr medium carbon steel material, which is used to support the stability of the entire blade structure.

[0038] Working principle: During the rotation of the rotary tiller blades, the engine drives the cutter shaft to rotate. The straight blade 1 and the curved blade 2 periodically cut into the soil, performing multiple tasks such as soil breaking and turning. The straight blade 1 is used for preliminary cutting of the soil, reducing resistance and improving soil penetration efficiency, while the curved blade 2 enhances the mixing, turning and crushing of the soil, improving soil aeration and uniformity. At the same time, the toothed blocks 3 cut through hard soil layers and debris layer by layer, ensuring the stability and efficiency of the operation.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of rotary blade, characterized in that, include: The rotary tiller consists of a straight blade (1) and an arc blade (2). The straight blade (1) is located at the front of the rotary tiller and is used to achieve linear cutting. The arc blade (2) is connected to the straight blade (1) to form an integral rotary tiller and is used to enhance soil disturbance during tillage. Toothed blocks (3) are set below the rotary tillers and are used to cut hard soil layers; Reinforcing plates (4) are installed on both sides of the rotary tiller blades to enhance the structural strength; The mounting head (6) is fixedly connected to the reinforcing plate (4) and is used to fix the rotary tiller blades to the cutter shaft of the rotary tiller. Bolt hole (5) is located inside the rotary tiller blade and is used to connect bolts.

2. A novel rotary blade as claimed in claim 1, wherein: The toothed blocks (3) are located on the lower side of the straight blade (1) and the curved blade (2), and are distributed as multiple serrated protrusions along the length of the blade.

3. A novel rotary blade as claimed in claim 1, wherein: The reinforcing plate (4) is arc-shaped and connected to the straight blade (1).

4. A novel rotary blade as claimed in claim 1, wherein: The straight blade (1) and the curved blade (2) are formed by integral forging.

5. A novel rotary blade as claimed in claim 1, wherein: Both the straight blade (1) and the curved blade (2) are composed of a base layer (7), an intermediate layer (8) and a surface layer (9).

6. A novel rotary blade as claimed in claim 5, wherein: The surface layer (9) is made of WC-Co based powder metallurgy material with a hardness value of HRA88 or higher, which is used to improve the service life of rotary tillers in high-intensity working environments.

7. A novel rotary blade as claimed in claim 5, wherein: The intermediate layer (8) is a Ni-based alloy layer, which is used as a thermal expansion buffer layer to prevent delamination or peeling between the surface layer (9) and the base layer (7) due to differences in material properties.

8. A novel rotary blade as claimed in claim 5, wherein: The base layer (7) is made of 40Cr medium carbon steel and is used to support the stability of the entire blade structure.

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