A stubble breaking and soil cutting knife with adjustable driving edge

Abstract

The invention discloses a stubble-breaking soil cutter with adjustable driving edge, which comprises a transmission shaft, a transmission device, a drive conversion device, a ring gear and a blade; at the center of the shaft; the transmission device is constrained between the transmission shaft and the ring gear and rotates along the inner surface of the ring gear under the action of the transmission shaft; one end of the drive conversion device is connected to the transmission device, and the other end is connected to the blade; according to the ground straw, root stubble and soil The cutting edge curve determined by the mechanical properties makes the sliding cutting angle larger than the sliding friction angle of the surface straw, root stubble and soil, so as to effectively cut the straw, root stubble and soil while achieving the effect of reducing resistance.

Description

technical field [0001] The invention relates to the technical field of agricultural equipment, in particular to a stubble breaking and soil cutting knife with an adjustable driving edge. Background technique [0002] In recent years, with the development of rural economy and the change of farmers' lifestyle, the function of straw as a living fuel has been gradually weakened, and with the further improvement of environmental protection requirements, the method of returning straw to the field has become the main cultivation method of conservation tillage. The trend of straw returning to the field shows that there are stubbles left during harvesting. Therefore, the stubble-breaking and soil-cutting device used in no-tillage sowing was born in response to the situation. [0003] The mechanical stubble cutting knife in the prior art mostly relies on manpower or mechanical driving force to drive the stubble cutting knife to cut the surface straw, underground root stubble and soil ...

AI Technical Summary

Problems solved by technology

[0003] The mechanical stubble cutting knife in the prior art mostly relies on manpower or mechanical driving force to drive the stubble cutting knife to cut the surface straw, underground root stubble and soil during production operations, and the interaction process between the stubble cutting knife and the soil Among them, the deformation and yield damage of soil are mainly manifested as shear deformation and tear damage, which is a typical pure cutting process dominated by cutting resistance. The cutting edge curve has an important influence on this state. Most of the cutting edges of stubble cutters in the prior art are of fixed design, which cannot be automatically adjusted according to the straw, root stubble, and soil conditions, so that the existing The stubble cutter has a high resistance

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