Universal straw cutter matched with combine harvester

Abstract

The invention provides a universal straw cutter matched with a combine harvester, which mainly comprises a shell, a cutting knife device and a straw discharge device which are arranged in the shell, and a driver. The cutting knife device consists of cutting knife discs, cutting knife rotating shafts and a speed and direction changing device. The straw discharge device consists of a straw discharge wheel and a straw guide plate. The driver consists of a straw discharge wheel shaft, a cutting knife rotating shaft driving principal shaft, and a driving belt connected with the wheel shaft and therotating shafts. The straw discharge wheel shaft of the driver is connected with the power output shaft of the combine harvester and is connected with the cutting knife rotating shaft driving principal shaft through an A driving belt. The universal straw cutter is provided with two cutting knife rotating shafts with different rotating speeds and the cutting knife discs are staggered to crossly cut the straws, so the universal straw cutter is quick in cutting speed, high in cutting efficiency and low in energy consumption and saves overall farming cost; and the universal straw cutter has strong universality, can be matched with various types of rice and wheat combine harvesters and is compact in structure, simple and practical.

Description

technical field [0001] The invention relates to agricultural machinery, in particular to a straw crusher, in particular to a general-purpose straw cutter matched with a combine harvester. Background technique [0002] At present, the use of a straw shredder in combination with a combine harvester can complete the entire process of farmland crops from harvesting, threshing to straw crushing. Straw crushing and returning to the field, or comprehensive utilization of crushed straw in other ways, is an effective measure to deal with straw waste. However, in the application, it was found that due to the structural limitations of some crushers, there are the following deficiencies to varying degrees: such as crushers with higher power, generally can only be matched with large rice and wheat combine harvesters. The length of the straw is about 10-15 cm, which cannot meet the requirements of comprehensive utilization of straw in many aspects; and some small rice and wheat combine h...

AI Technical Summary

Problems solved by technology

However, in the application, it was found that due to the structural limitations of some crushers, there are the following deficiencies to varying degrees: such as crushers with higher power, generally can only be matched with large rice and wheat combine harvesters. The length of the straw is about 10-15 cm, which cannot meet the requirements of comprehensive utilization of straw in many aspects; and some small rice and wheat combine harvesters cannot drive the high-power crusher to work normally, and the barely working is also intermittent, and can only crush about 3 Acres of rice and wheat stalks, and the wet stalks cannot be cut at all, and the crusher is often blocked by the straws

And the cutting power of some low-power crushers is even worse.

In addition, the cutter structure of the existing crusher is usually to install a rotary cutter similar to a rotary tiller on a single shaft, and rotate at a speed of 5000-8000 revolutions per minute. Once the crushing cutter breaks, it will easily fly through the iron shell Going out, there are potential safety hazards; and with the diversification of combine harvesters, the installation rate of existing models of crushers and rice and wheat combine harvesters is low, and the versatility is poor

There is a kind of hammer mill, which has a good crushing effect on rice and wheat, but the load is too large, and the use of the combine harvester will affect the harvesting speed; and the hammer shaft is running at high speed, Due to the insufficient concentricity of the shaft body, the violent vibration generated makes the fuselage easy to be damaged. Often, the grass outlet of the harvester is torn after less than one year of use

However, the structure of the shredder is relatively complicated, the processing accuracy is high, and the maintenance of the transmission system is troublesome, so it is not the most ideal.

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