Mechanical servo control method for axial flow threshing

Abstract

The invention discloses a mechanical servo control method for axial-flow threshing. An axial-flow threshing machine with the servo feedback control function is used for applying threshing operation, the natural guide effect is achieved through gravity, and the electric power cost and the labor cost are effectively reduced; meanwhile, a transmission shaft is driven by a motor to rotate, a rolling cylinder shell thus rotates, three crushing bars arranged on the rolling cylinder shell rotate to thus achieve threshing operation, the threshing force in the threshing operation process can be adjusted as required, the operation maximum load force after adjustment is linked with a servo feedback control mechanism through an operation part to achieve the uniformity in the whole threshing process, and it is effectively reduced that due to non-uniform threshing force, seeds after threshing are damaged; with changing of the external feeding amount, the whole servo feedback control mechanism is inthe dynamic balance state, and the whole threshing operation effect is effectively guaranteed; when the abnormal condition occurs in the threshing process, a power control operating lever provides feedback control power for the servo feedback control mechanism so that it can be avoided that the abnormal condition is further extended.

Description

technical field [0001] The invention relates to the technical field of threshing machinery control, in particular to a mechanical servo control method for axial flow threshing. Background technique [0002] my country is a large grain-growing country. With the acceleration of urbanization and the aging of the population, there are fewer and fewer laborers capable of harvesting and threshing grain, and it is necessary to use threshing machinery to assist in harvesting grain. Although there are combine harvesters, independent threshing operations are still required in mountainous and plateau areas due to terrain constraints. At present, there are many kinds of threshing machines sold on the market, and their structures are also different. Although the external feeding structure is constantly changing, the core part of threshing has not been greatly improved. The threshing structure is relatively fixed and cannot be adjusted according to needs, let alone Realize self-adaptive ...

AI Technical Summary

Problems solved by technology

Although there is a combine harvester, it is still necessary to use an independent threshing operation method in the mountainous and plateau areas due to terrain constraints.

At present, there are many kinds of threshing machines sold on the market, and their structures are also different. Although the external feeding structure is constantly changing, the core part of threshing has not been greatly improved. The threshing structure is relatively fixed and cannot be adjusted according to needs, let alone Realize self-adaptive adjustment according to real-time working conditions to achieve the dynamic equilibrium state of threshing conditions, and then achieve the consistency of threshing effect

On the one hand, the traditional threshing method leads to incomplete threshing, and due to the limitations of the machine itself, in order not to waste the remaining grains, it can only be threshed again manually, which increases the labor intensity and wastes a lot of manpower and time. The front part of the work is mechanized, and the latter part is artificial; at the same time, due to the uneven threshing force in the actual threshing process, the mild case will cause the shell to break, which is not conducive to later storage, and the severe case will cause the edible part in the shell to crack or even smash. This will cause unnecessary waste and affect food consumption; and for breeding with higher requirements, it will seriously affect the quality of seeds; in addition, when abnormal conditions or accidents occur during threshing, traditional threshers can only stop working by turning off the power source. Whether it is a motor or an engine, it is easy to cause great energy loss

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