Machinery & Energetics

The physics of crushing, grain threshing drum and beater striker linked with shock granules in a hard surface or strike the grain surface hard working bodies. The speed bumps are expected more the linear velocity of the pests of the drum and blades of the cutting beater. Exceptional is the case when the grain which pushed the drum beats on the blade of the cutting beater, which moves in the opposite direction relative to the direction of movement of the whip of the drum. The devastating impact speed dramatically different culture and variety of plants, moisture and time of grain harvest, an oblique or a direct blow, spot blow to grain, form adaryukova the device, the number of blows, weight of 1000 grains, and the like. Destructive to grain impact force from moment of touching hard surface of grain or touching hard surface instantly turns into wide variety of countervailing pressures, causing the volume and surface of tension in the body and on the body of the seed. While the destruction of grain can be considered as the system of phenomena, including: the effect of the wedge, the displacement of one part of the grain relative to another, the break with the tearing of the grain, the impact on shockproof hard support, shock on shock viscous support, oblique (sliding) punch and others. Aware of all this and wanting to reduce crushing and damage of grain, it is advisable not only to exceed the critical velocity impact of the working bodies according to the respective grain crops, but also to improve the technological process and the working parts of the threshing and separating devices regarding damage to the grain. However, it should be noted that in any case it is not possible to get rid of damaged grains in the presence of attacks on the grain. This privedit to the replacement of the drum and the deck of the threshing and separating devices or almost unstressed unstressed corresponding devices.

grain damage, channel, scraper, elevator, combine harvester