SU1215639A1 - Separator of rough heap - Google Patents

Description

The invention relates to agricultural machinery and can be used in the construction of coarse separators installed, for example, on combine harvesters.

The purpose of the invention is to improve the quality of grain release when the initial pile is fed between rotors and grids and to reduce the harmful effects of vibration on the separator parts.

FIG. 1 shows a schematic side view of the separator; in fig. 2 is a view A of FIG. one.

The coarse separator contains rotors 1 installed in a row, rotating in the same direction and covered from below by oscillating gratings arranged below them, made of two equal parts 2 and 3, supported by hinged suspensions 4. On one of the parts (for example, part 2 The gratings, by means of bearings 5 (Fig. 2), have an eccentric shaft 6 connected by a belt drive 7 with an oscillating drive shaft 8 located in the same vertical plane. Rods 9 (at least one connecting rod 9) are pivotally mounted on the eccentric shaft 6 and pivotally connected to the axis 10 fixedly mounted on the second part of the 3 grids. Each of the parts 2 and 3 of the gratings is spring-loaded relative to the body 11 by springs 12 and 13, respectively, mounted in the longitudinal direction on both sides of the gratings on the rods 14 between the brackets 15 and 16 on the body 11 and the crown

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mattes 17 and 18 respectively on both parts x 2 and 3 grids. Springs 12 and 13 balance each other. The tension of the springs is made by adjustable springs 19 and 20 mounted on the free ends of the rods 14 threaded with nuts 21 and washers 22.

The separator works as follows.

When the eccentric shaft 6 rotates under the action of the rods 9, both parts of the grids 2 and 3, having equal masses and subject to the law of motion of the center of mass of the system, begin to perform synchronous oppositely directed oscillations with the same span. Since the eccentric shaft 6 is not associated with body II, the disturbing force is not transmitted to the body of the spring 12 and 13, and with the oscillations of both parts of the grids 2 and 3 being the same, the deformations are transmitted to the arms 15 and 16 of the body 11 equal and oppositely directed forces which are mutually balanced, thus providing isolation of the vibrating portions 2 and 3 of the grids from the housing 11.

When longitudinal oscillations are communicated to the gratings located under the rotors, under the action of variable inertia forces, the process of separating the grain in the gap between the rotating rotors and the gratings is intensified, thereby increasing the amount of grain released through the gratings (the separation increases). The use of longitudinal oscillations of the lattices allows to achieve the best results with minimum values of the acceleration of lattice vibrations.

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VNIIPI Order 920; i Circulation 679 Subscription

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

Rough heap separator, comprising row-mounted rotors enclosed by arcuate separating grids equipped with an oscillation drive with an eccentric shaft and connecting rod, characterized in that, in order to improve the quality of grain separation when feeding the initial heap between the rotors and grids and reduce the harmful effects of vibration on the parts the separator, the grilles are made of two parts of mass equal parts, connected one to another by means of an eccentric shaft with a connecting rod, sequentially and movably placed along the heap, laid along a series of rotors, each part being spring-loaded relative to the housing in the longitudinal direction by means of balancing one guy adjustable springs. other1215639