A rotary cultivator soil breaking mechanism

Abstract

The utility model discloses a rotary cultivator soil crushing mechanism, including a plurality of first and last consecutive soil crushing roller subassembly, the both ends of a plurality of soil crushing roller subassembly are connected with inner spline shaft and outer spline shaft respectively, the length of soil crushing roller subassembly has three kinds of specifications, three kinds of specifications are 30cm, 40cm and 50cm respectively, soil crushing roller subassembly includes two round end plates of side -by -side arrangement, and a plurality of soil crushing rollers of circular distribution are fixedly installed between two round end plates, the central position of two round end plates is provided with roller axle, and one end of roller axle is equipped with outer spline A, and the other end of roller axle is equipped with inner spline A. The utility model provides a rotary cultivator soil crushing mechanism, solves the problem that the work width is not adjustable or is difficult to adjust.

Description

Technical Field

[0001] This utility model relates to a soil-crushing mechanism for a rotary tiller, belonging to the field of rotary tillage machinery technology. Background Technology

[0002] Currently, rotary tillers are usually equipped with soil-crushing rollers at the tail end. The main functions of the soil-crushing rollers can be summarized as follows: Secondary soil breaking up and leveling: While the rotary tiller's cutter rollers can break up large clods of soil at high speed, the turned-up clods are not uniform in size, and some may remain quite large. The breaking rollers follow closely behind, using their own weight and rotation to further crush and break up these larger clods, making the soil finer and more uniform. The breaking rollers then roll and smooth the uneven soil after the cutter rollers have turned it over, effectively eliminating furrows and ridges, resulting in a smoother land surface. This is crucial for subsequent planting and irrigation operations.

[0003] Moderate soil compaction: Soil tilled by rotary tillers is often too loose and porous, with many gaps. Such soil is not conducive to close contact between seeds and soil, affecting seed germination and root growth. The compaction of the soil roller can moderately compact the loose surface soil. That is, the surface soil is dense, which is beneficial for moisture retention and seed germination; the subsoil is loose, which is beneficial for root development and drainage.

[0004] Examples include a novel soil-crushing roller and rotary tiller disclosed in CN202123441818.1, a soil-crushing roller disclosed in CN201920595997.8, and a multi-functional soil-crushing roller disclosed in CN202321171409.0. A soil-crushing roller is typically a single, welded, wide roller or several fixed-length components. A single soil-crushing roller can only be fitted to a rotary tiller with a specific working width. If the user changes the main unit to a different width, the entire soil-crushing mechanism needs to be purchased again, resulting in high costs and inflexibility.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This utility model addresses the shortcomings of the prior art by providing a soil-crushing mechanism for a rotary tiller, which can solve the problem of non-adjustable or difficult-to-adjust working width.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: A soil-crushing mechanism for a rotary tiller includes multiple soil-crushing roller assemblies connected end to end. The two ends of the multiple soil-crushing roller assemblies are respectively connected to an inner spline shaft and an outer spline shaft. The soil-crushing roller assembly includes two circular end plates arranged side by side. Multiple soil-crushing rollers distributed in a circular pattern are fixedly installed between the two circular end plates. A roller shaft is inserted at the center of the two circular end plates. One end of the roller shaft is provided with an outer spline A, and the other end of the roller shaft is provided with an inner spline A.

[0008] Furthermore, both the internal spline shaft and the external spline shaft are rotatably mounted inside the support arm via bearing seats, and the support arm is mounted at the rear of the rotary tiller frame.

[0009] Furthermore, the soil-crushing roller assembly has three length specifications: 30cm, 40cm, and 50cm.

[0010] Furthermore, the outer periphery of the circular end plate is provided with a plurality of mounting holes for the soil crushing roller to pass through, and the mounting holes are set in the tangential direction of the edge of the circular end plate; the soil crushing roller passes through the mounting holes and is welded and fixed to the circular end plate.

[0011] Furthermore, through holes are provided between the connected mounting holes for bolts to pass through, and the bolts connect the circular end plates of adjacent soil-crushing roller assemblies.

[0012] Furthermore, the external spline A is located outside the outer end face of the circular end plate, while the internal spline A is flush with the outer end face of the circular end plate.

[0013] Furthermore, an internal spline B is provided at the end of the internal spline shaft away from the bearing seat, and the internal spline B is connected to the external spline A of the soil crushing roller assembly.

[0014] Furthermore, an external spline B is provided on the end of the external spline shaft away from the bearing seat, and the external spline B is connected to the internal spline A of the soil crushing roller assembly.

[0015] Furthermore, the external spline A, internal spline A, internal spline B, and external spline B are all provided with pin holes for the pin shaft to pass through.

[0016] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This utility model adopts a modular connection design, allowing the soil-crushing roller assembly to be spliced ​​end-to-end and rotated as a whole. The soil-crushing roller assembly is available in three specifications: 30cm, 40cm, and 50cm, facilitating flexible splicing and assembly of multiple soil-crushing roller assemblies 1 according to the working width of different machine models. By splicing standardized components of different lengths, it can quickly adapt to various models and widths of rotary tillers, demonstrating strong versatility.

[0017] Adjacent soil-crushing roller assemblies are connected by a triple connection of splines, bolts, and pins, which can prevent the machine from coming apart under vibration and load changes, effectively cope with the complex working conditions in the field, and has high reliability.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an assembly diagram of the soil crushing roller assembly and the inner and outer splined shafts; Figure 3 yes Figure 2 A schematic diagram of the cross-section at point AA.

[0020] In the figure, 1-soil crushing roller assembly, 11-circular end plate, 12-roller shaft, 13-external spline A, 14-internal spline A, 15-mounting hole, 16-soil crushing roller, 17-through hole, 18-bolt; 2-internal spline shaft, 21-internal spline B; 3-external spline shaft, 31-external spline B; 4-bearing seat; 5-support arm. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0022] like Figures 1-3 As shown in the figure, this utility model provides a soil-crushing mechanism for a rotary tiller, including multiple soil-crushing roller assemblies 1 connected end to end, with the two ends of the multiple soil-crushing roller assemblies 1 respectively connected to an inner spline shaft 2 and an outer spline shaft 3.

[0023] The inner spline shaft 2 and the outer spline shaft 3 are both rotatably mounted in the support arm 5 through the bearing seat 4. The support arm 5 is installed at the tail of the rotary tiller frame. The inner spline shaft 2 and the outer spline shaft 3 provide rotational support for the multiple soil crushing roller assemblies 1 between them.

[0024] The soil crushing roller assembly 1 has three lengths: 30cm, 40cm, and 50cm, which facilitates flexible splicing and assembly of multiple soil crushing roller assemblies 1 according to the working width of different machine models.

[0025] The soil-crushing roller assembly 1 includes two circular end plates 11 arranged side by side, and a plurality of soil-crushing rollers 16 arranged in a circular pattern are fixedly installed between the two circular end plates 11. A roller shaft 12 is inserted through the center of the two circular end plates 11. One end of the roller shaft 12 is provided with an external spline A13, and the other end of the roller shaft 12 is provided with an internal spline A14.

[0026] The circular end plate 11 has a plurality of mounting holes 15 on its periphery for the soil-crushing roller 16 to pass through. The mounting holes 15 are located in the tangential direction of the edge of the circular end plate 11. The soil-crushing roller 16 passes through the mounting holes 15 and is welded and fixed to the circular end plate 11.

[0027] A through hole 17 is provided between the connected mounting holes 15 for bolts 18 to pass through, and the bolts 18 connect the circular end plates 11 of adjacent soil crushing roller assemblies 1.

[0028] The external spline A13 is located outside the outer end face of the circular end plate 11, and the internal spline A14 is flush with the outer end face of the circular end plate 11.

[0029] The inner spline shaft 2 is provided with an inner spline B21 at the end away from the bearing seat 4, and the inner spline B21 is connected to the outer spline A13 of the soil crushing roller assembly 1.

[0030] The external spline shaft 3 is provided with an external spline B31 at the end away from the bearing seat 4, and the external spline B31 is connected to the internal spline A14 of the soil crushing roller assembly 1.

[0031] The external spline A13, internal spline A14, internal spline B21, and external spline B31 are all provided with pin holes for the insertion of pins. The pins connect the internal and external splines to prevent them from coming loose.

[0032] The specific working principle of this utility model is as follows: This utility model is installed at the tail of a rotary tiller to further break up and agitate the soil clods after they have been tilled by the rotary tiller, thereby achieving the purpose of finely leveling the soil.

[0033] This utility model adopts a modular connection design. The soil-crushing roller assembly 1 can be spliced ​​end to end and rotated as a whole. The soil-crushing roller assembly 1 is available in three specifications: 30cm, 40cm, and 50cm, which facilitates flexible splicing and assembly of multiple soil-crushing roller assemblies 1 according to the working width of different machine models. By splicing standardized components of different lengths, it can be quickly adapted to rotary tillers of various models and widths, and has strong versatility.

[0034] The adjacent soil-crushing roller assembly 1 is connected by a triple connection of splines, bolts and pins, which can prevent the machine from coming apart under vibration and load changes, effectively cope with the complex working conditions in the field, and has high reliability.

[0035] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A soil-breaking mechanism for a rotary tiller, characterized in that: It includes multiple soil-crushing roller assemblies (1) connected end to end, with the two ends of the multiple soil-crushing roller assemblies (1) connected to an inner spline shaft (2) and an outer spline shaft (3) respectively; the soil-crushing roller assembly (1) includes two circular end plates (11) arranged side by side, and multiple soil-crushing rollers (16) arranged in a circular pattern are fixedly installed between the two circular end plates (11). A roller shaft (12) is inserted at the center of the two circular end plates (11), and an outer spline A (13) is provided at one end of the roller shaft (12), while an inner spline A (14) is provided at the other end of the roller shaft (12).

2. The soil-breaking mechanism of a rotary tiller as described in claim 1, characterized in that: The inner spline shaft (2) and the outer spline shaft (3) are both rotatably mounted in the support arm (5) through the bearing seat (4), and the support arm (5) is mounted at the tail of the rotary tiller frame.

3. The soil-breaking mechanism of a rotary tiller as described in claim 1, characterized in that: The length of the soil crushing roller assembly (1) has three specifications: 30cm, 40cm and 50cm.

4. The soil-breaking mechanism of a rotary tiller as described in claim 1, characterized in that: The outer periphery of the circular end plate (11) is provided with a plurality of mounting holes (15) for the soil crushing roller (16) to pass through. The mounting holes (15) are located in the tangential direction of the edge of the circular end plate (11). The soil crushing roller (16) passes through the mounting holes (15) and is welded and fixed to the circular end plate (11).

5. The soil-breaking mechanism of a rotary tiller as described in claim 4, characterized in that: A through hole (17) is provided between the connected mounting holes (15) for bolts (18) to pass through, and the bolts (18) connect the circular end plates (11) of the adjacent soil crushing roller assembly (1).

6. The soil-breaking mechanism of a rotary tiller as described in claim 1, characterized in that: The external spline A (13) is located outside the outer end face of the circular end plate (11), and the internal spline A (14) is flush with the outer end face of the circular end plate (11).

7. The soil-breaking mechanism of a rotary tiller as described in claim 1, characterized in that: The inner spline shaft (2) is provided with an inner spline B (21) at the end away from the bearing seat (4), and the inner spline B (21) is connected to the outer spline A (13) of the soil crushing roller assembly (1).

8. The soil-crushing mechanism of a rotary tiller as described in claim 7, characterized in that: The external spline shaft (3) is provided with an external spline B (31) at the end away from the bearing seat (4), and the external spline B (31) is connected to the internal spline A (14) of the soil crushing roller assembly (1).

9. The soil-crushing mechanism of a rotary tiller as described in claim 8, characterized in that: The external spline A (13), internal spline A (14), internal spline B (21) and external spline B (31) are all provided with pin holes, which are used for the pin shaft to pass through.

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