Layered curved surface forming non-uniform tillage rotary tillage assembly

Abstract

The utility model discloses a layered curved surface forming non-uniform tillage rotary tillage assembly which comprises a driving belt wheel, rotary tillage blades, a drill bit, rotary tillage blade supports, a roller shaft and a supporting shaft neck, the rotary tillage blade supports are arranged on the outer surface of the circumference of the roller shaft, and the length of the rotary tillage blades is gradually reduced layer by layer from the end of the driving belt wheel to the drill bit. And the rotary tillage blades and the drill bit rotate to form a rotating body shaft profile which is a concave groove with an inverse parabola section, so that non-uniform tillage of a field is realized. The multi-layer vertical rotary tillage blade has the advantages that the multi-layer vertical rotary tillage blade body with the length decreasing progressively only conducts tillage on crop planting rows, rotary tillage is not conducted on the two sides of the planting rows, and a solid soil layer is reserved; non-uniform cultivation with non-plough layers and plough layers spaced is integrally formed after field rotary tillage, energy consumption is greatly reduced compared with traditional horizontal type and vertical type overall rotary tillage during unit area cultivation, and rainwater is dredged and permeated to be collected at the roots of crops along the firm non-plough layer wall to promote growth of the crops during rainfall in the crop growth period. Compared with integral rotary tillage, the rainwater utilization rate can be effectively increased, and yield increase of crops in arid regions is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural tillage machinery technology, specifically relating to a layered curved surface forming non-uniform tillage rotary tillage assembly. Background Technology

[0002] Rotary tillers are key pieces of equipment in farmland cultivation, used to break up surface stubble, loosen the soil, and improve soil structure (solid, liquid, and gas phases), creating favorable conditions for subsequent crop planting. With the development of agricultural modernization, vertical rotary tillers have gained attention due to their high efficiency.

[0003] However, in dryland farming areas, especially those reliant on natural rainfall, existing rotary tillage technologies (including traditional horizontal and conventional vertical tillage) have significant shortcomings: 1. Low water use efficiency: Traditional rotary tillage uniformly cultivates the entire plot, resulting in water infiltration evenly throughout the field during irrigation or rainfall. This not only makes the improved soil in non-planting areas (such as between rows) prone to weed growth, but more importantly, water cannot be effectively collected in the crop root zone, resulting in a waste of precious water resources. 2. High ineffective energy consumption: For non-full-field planting patterns such as row or ridge cultivation, the complete disturbance of the soil in non-planting areas by traditional rotary tillage is ineffective, significantly increasing tractor power consumption. Therefore, there is an urgent need for a new rotary tillage technology that can specifically improve the soil structure in planting areas, promote the efficient collection of rainwater / irrigation water to crop roots, and reduce ineffective disturbance in non-planting areas to lower energy consumption.

[0004] Existing vertical rotary tiller improvement solutions:

[0005] Although a vertical rotary tiller rotary drill rod (patent CN216123441U) reduces cutting resistance through a vertical cutter shaft, it has the following drawbacks: the blade layout is simple, and deep tillage relies on a single blade; because the blades are of equal length, the entire plot is tilled, rainwater seeps in evenly, the rainwater utilization rate is low, and the power consumption is high; the tillage depth is shallow, the bottom of the rotary tiller roller shaft is prone to wear and the wear is uneven, which reduces the soil breaking effect and results in inconsistent soil particle size.

[0006] Although a vertical rotary tiller drill shaft device (patent CN205389339U) reduces power consumption by modifying the drill shaft diameter so that it decreases sequentially from top to bottom, the equal-length rotary tiller blades result in a conventional I-shaped rotary tillage layer. Due to the overall rotary tillage, the energy-saving and consumption-reducing effect of this structure is not significant. At the same time, the overall rotary tillage of the land leads to uniform infiltration of rainwater. Regardless of how the crop is planted, little water reaches the crop roots, resulting in low utilization of rainwater by the crop and high power consumption.

[0007] Other existing technologies, such as a rotary tiller blade (patent CN202197507U) that improves the angle of the rotary tiller blades to reduce the resistance on the blades; and a spiral progressive plow (patent CN2077183U) that uses spiral blades to till and break up soil, can improve work efficiency. However, current technologies still use blades of a single length, which causes severe blade wear and makes it impossible to save energy, reduce emissions, and make rational use of environmental resources.

[0008] To address the aforementioned problems, this invention designs a layered curved surface forming non-uniform tillage rotary tillage assembly. The soil layer after rotary tillage forms a concave rotary tillage layer with an inverse parabolic cross-section, exhibiting typical non-uniform tillage. A significant amount of untilled soil remains far from the center of the concave layer, resulting in a substantial improvement in tractor energy efficiency and significantly increased operational efficiency. The untilled layer is firm and has poor three-dimensional soil structure, hindering water infiltration and suppressing weed growth to some extent. Simultaneously, crops planted in the middle of the concave rotary tillage layer facilitate water infiltration. Combined with the water-guiding effect of the untilled layer, this effectively increases rainwater collection at the bottom of the rotary tillage layer, significantly improving crop water utilization and reducing overall field water evaporation and waste, thus contributing to increased crop yields in arid regions. Summary of the Invention

[0009] The purpose of this utility model is to provide a vertical rotary tiller rotary roller assembly with strong deep tillage capability for non-uniform tillage, good soil breaking effect, and the ability to achieve the interval between underground rotary tillage layer and untilled layer without the need for combined operation with other machinery.

[0010] To achieve the above objectives, this utility model provides a layered curved surface forming non-uniform tillage rotary tillage assembly, characterized by: a drive pulley, rotary tillage blades, a drill bit, rotary tillage blade supports, a roller shaft, and a support journal; the length of the rotary tillage blades decreases from top to bottom, with a decreasing gradient of approximately 3-5 cm per 10 cm roller shaft height; after tillage, the underground rotary tillage layer forms a concave groove with an inverse parabolic cross-section, with a groove bottom depth of 15-40 cm. The longest blade at the top of the rotary tillage assembly is 20-30 cm long, and the shortest blade at the bottom is 5-10 cm long.

[0011] Preferably, the drive pulley is fixed to the top of the roller shaft by a key connection, and one or more layered curved surface forming non-uniform tillage rotary tillage assemblies are configured at the front end of the vertical rotary tiller.

[0012] Preferably, the rotary tiller blades are fixed to the rotary tiller blade support by bolts and are installed on the roller surface in a double helix pattern.

[0013] Preferably, the drill bit has a conical spiral structure and is fixedly installed at the bottom of the roller shaft. The cone angle of the drill bit is 50°-70°, the vertical distance between its spiral cutting edge and the rotary tillage blade at the bottom of the roller shaft is 5-10cm, and the surface of the drill bit is coated with wear-resistant material.

[0014] Preferably, the outer envelope of the rotary tiller blades can be a parabola or an oblique line, forming a concave rotary tilled layer interspersed with a firm untilled layer in the lower soil layer after rotary tillage. This structure facilitates rainwater infiltration, allowing it to flow along the hard walls of the firm untilled soil to the bottom of the grooves in the soft rotary tilled layer, which is beneficial for crop growth.

[0015] Preferably, the rotary tiller blades are made of 65 manganese steel, which effectively resists wear from soil and stubble.

[0016] Preferably, the support journal and the bearing are fitted together and fixedly installed on the frame of the vertical rotary tiller to form a rotating pair.

[0017] Preferably, the row spacing of the layered curved non-uniform tillage rotary tillage assembly is configured at 50-80cm intervals via adjustable crossbeams, with hydraulic locking mechanisms at both ends of the crossbeams.

[0018] The beneficial effects of the above scheme are: increased tillage depth: the maximum tillage depth is 40cm, which is significantly improved compared with the traditional horizontal rotary tiller; water saving and increased yield: the groove formed after rotary tillage of this utility model improves the utilization rate of rainwater, which is conducive to increasing crop yield; energy saving and consumption reduction: the inter-row tillage is reduced, reducing consumption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a soil profile after rotary tillage.

[0021] In the diagram: 1. Drive pulley; 2. Rotary tiller blades; 3. Drill bit; 4. Rotary tiller blade support; 5. Roller shaft; 6. Support journal. Support journal 6 is part of roller shaft 5 and is connected to the rotary tiller frame via bearings. Drive pulley 1 and roller shaft 5 are connected together by a key. Rotary tiller blade support 4 is welded to roller shaft 5. Rotary tiller blades 2 are inserted into rotary tiller blade support 4 and connected together by bolts. Drill bit 3 is threaded onto roller shaft 5 and locked onto roller shaft by screws. Detailed Implementation

[0022] The present invention will be further described clearly and completely below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0023] like Figure 1As shown, a layered curved surface forming non-uniform tillage rotary tillage assembly is characterized by comprising a drive pulley, rotary tillage blades, a drill bit, rotary tillage blade supports, a roller shaft, and a support journal. The length of the rotary tillage blades decreases from top to bottom, with a decreasing gradient of approximately 3-5 cm per 10 cm roller shaft height. After tillage, the underground rotary tillage layer forms a concave groove with an inverse parabolic cross-section, with a groove bottom depth of 15-40 cm. The longest blade at the top of the rotary tillage blade is 20-30 cm long, and the shortest blade at the bottom is 5-10 cm long. This allows for force balance at both ends of the roller shaft, reducing impact vibration, helping to extend the service life of transmission components and bearings, and making the machine operation more stable.

[0024] The drive pulley is fixed to the top of the roller shaft by a key connection, and one or more layered curved surface forming non-uniform tillage rotary tillage assemblies are configured at the front end of the vertical rotary tiller.

[0025] To further explain, the length of the rotary tiller blades is configured according to the row width requirements of the planted crops, and the width of the rotary tillage layer can be changed to adapt to different crops. For example... Figure 2 As shown, the length of the parabolic rotary tillage blades decreases from 20-30cm to 5-10cm in steps, which can form a concave rotary tillage layer in the lower soil layer.

[0026] The rotary tillage blades are arranged symmetrically and alternately, with adjacent blades rotating in opposite directions.

[0027] The rotary tiller blade support is perpendicular to the roller shaft, allowing the blades to penetrate deep into the soil during rotation, achieving a deeper tillage depth. Driven by the drive pulley, the rotary tiller blades rotate while simultaneously moving forward in a straight line with the rollers, achieving a tillage depth of 15-40cm.

[0028] The rotary tiller blades are fixed to the rotary tiller blade supports by bolts. The rotary tiller blade supports are evenly fixed on the roller shaft according to the double helix pattern. This can balance the force at both ends of the roller shaft, reduce impact vibration, help extend the service life of transmission components and bearings, and make the machine operation more stable.

[0029] The rotary tiller blades are made of 65 manganese steel, which effectively resists abrasion from soil and stubble. The drill bit at the bottom of the roller is an electroplated milling drill bit, which effectively reduces wear on the implements.

[0030] The drill bit has a conical spiral structure and is fixedly installed at the bottom of the roller. The cone angle of the drill bit is 50°-70°. The vertical distance between its spiral cutting edge and the rotary tillage blade at the bottom of the roller is 5-10cm, and the surface of the drill bit is coated with wear-resistant material.

[0031] The support journal mates with the bearing and is fixedly mounted on the support bearing seat on the vertical rotary tiller frame, forming a rotating pair. Through the cooperation of the support journal, bearing, and support bearing seat, the roller shaft is fixed on the frame of the vertical rotary tiller, ensuring stable rotation of the roller shaft during operation.

[0032] The roller spacing is configured at 50-80cm intervals via adjustable crossbeams, with hydraulic locking mechanisms at both ends of the crossbeams.

[0033] The working principle and method of this utility model: The vertical rotary tiller is equipped with several layered curved surface non-uniform tillage rotary tillage assemblies. The row spacing of the assemblies is configured at intervals of 50-80cm via an adjustable crossbeam. The layered curved surface non-uniform tillage rotary tillage assemblies obtain power from the tractor's power take-off shaft, and transmit the power to the rotary tillage blades through belt drive, causing the rotary tillage blades to rotate around the vertical shaft. The rotary tillage blades, distributed in a double helix shape on the roller shaft, cut into the soil during rotation, breaking up the soil clods. Because the length of the rotary tillage blades decreases from top to bottom, the outer envelope is a parabola. After tillage, the underground rotary tillage layer forms a concave groove with an inverse parabolic cross section, and the bottom depth of the groove is 15-40cm.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A layered curved surface forming non-uniform tillage rotary tillage assembly, characterized in that: It includes a drive pulley (1), rotary tiller blades (2), drill bit (3), rotary tiller blade support (4), roller shaft (5), and support journal (6); the length of the rotary tiller blades (2) decreases from top to bottom, and the decreasing gradient is about 3-5cm for every 10cm roller shaft height; after tillage, the underground rotary tillage layer forms a concave groove with an inverse parabolic cross section, and the bottom depth of the groove is 15-40cm; the longest blade at the top of the rotary tiller blades (2) is 20-30cm long, and the shortest blade at the bottom is 5-10cm long.

2. The layered curved surface forming non-uniform tillage rotary tillage assembly according to claim 1, characterized in that: The drill bit (3) has a cone angle of 50°-70°, and its spiral cutting edge is 5-10cm away from the rotary tillage blade (2) at the bottom of the roller shaft (5). The surface of the drill bit (3) is coated with wear-resistant material.

3. The layered curved surface forming non-uniform tillage rotary tillage assembly according to claim 1, characterized in that: The support journal (6) cooperates with the bearing and is fixedly installed on the support bearing seat on the vertical rotary tiller frame to form a rotating pair.

4. The layered curved surface forming non-uniform tillage rotary tillage assembly according to claim 1, characterized in that: The drive pulley (1) is fixed to the top of the roller (5) by a key connection, and one or more layered curved surface forming non-uniform tillage rotary tillage assemblies are arranged at the front end of the vertical rotary tiller.

5. The layered curved surface forming non-uniform tillage rotary tillage assembly according to claim 1, characterized in that: The row spacing of the rollers (5) is configured at 50-80cm intervals via adjustable crossbeams.

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