SU1366095A1 - Rotary separator - Google Patents

Description

The invention relates to agricultural machinery,

in particular for machines for harvesting root and field crops. The goal is to improve the performance and reliability of the separator by maintaining

optimal angle between the blades of adjacent disks of adjacent shafts. The rotary separator includes an inclined frame 1 and blades 2, mounted on the shafts 3 and equipped with safety cam clutches 4. The undermined soil layer enters the disks 2, where it is loosened and sifted. When stones or roots are jammed between adjacent discs 2, a safety clutch 4 is activated on one of the shafts. The other shaft, while continuing to rotate, releases and disengages the stone. Since the number of cams of the safety clutch with

equal to the number of blades of the disk, · then the angle between adjacent blades of the disks is kept constant after slipping of one of the disks.

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1366095

The invention relates to the field of agricultural engineering, in particular to machines for harvesting vegetables.

The aim of the invention is to improve the performance and reliability of the separator by maintaining the optimal angle between the blades of adjacent disks adjacent shafts.

FIG. 1 shows a rotary separator, side view; in fig. 2 the same, top view.

The rotary separator includes an inclined frame 1, bladed (multi-faceted) discs 2 fixed on shafts 3 and equipped with safety clutches 4 with a response force increasing in the direction of movement of the separating mass. The shafts are mounted on a frame in bearings. Clutches 4 are made mainly cam, with the number of Cams, equal to the number of blades (faces) in the separating disk.

The separator works as follows.

The undermined soil layer enters the disks 2 fixed on the shafts 3. The disks of the first shaft partially loosen the layer, sift the loosened soil, and the remaining mass is transferred to the disks by the following shafts. When stones or roots are wedged between adjacent discs of adjacent shafts, the previous shaft stops momentarily as the force on it increases and the safety clutch operates, and the next one, continuing rotation, increases the angle between the clutches of the stone (the tubers) to a value greater than the double friction angle of the stone (root and tuber crops) about the material of the blades, will release it and lead it out of the pinch zone. The duration of the shaft stop is insignificant and amounts to tenths or hundredths of a second, depending on the number of blades (faces) in the separating disks and the frequency of rotation of the shaft. With three blades in the disk, the stopping time will be equal to the time of the disk turning 1/3 of a turn, with four blades on

October ^1/4, when the six - 1/6 etc.

After the stone leaves the pinch zone, the stopped shaft resumes rotation, and it will be turned in the direction opposite to the rotation by an angle equal to the angle between the blades (edges) of the separating disk, since the number of clutch cams is equal to the number of blades (faces) in the disk. This will ensure the prevention of the seizure of stones and tubers while maintaining a constant angle between the blades of the disks of adjacent shafts. This will automatically remove partially crushed stones and root and tuber crops from the pinch zone without stopping the cleaning unit.

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Claims (1)

Claim Rotational separator mainly root-harvesting machine, containing shafts mounted on the frame with separating discs, equipped with safety clutches with actuation force, increasing in the direction of movement of the separating mass, characterized by 40 that, in order to improve the performance and reliability of the separator operation by maintaining the optimum angle between the blades of adjacent disks of adjacent shafts, the couplings are made pre ₄ , _ property-cam with a number of cams equal to the number of blades in the separating disk. 1366095