SU938806A1 - Device for thrashing standing crops - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular to machines for harvesting cereals, mainly rice, and towing at the root.

A device is known for threshing stalks of cereals at the root, made in the form of finger-drums mounted one above the other, the lower drum being made as an eccentric drum picker, and the upper drum being rotary relative to the axis of rotation of the lower one.

It is also known a device for harvesting agricultural crops at the root, containing dividers, combing organs, each of which is located between adjacent dividers, and trays for collecting threshed grain 2.

The disadvantages of the known devices are the low threshing efficiency and significant grain losses.

The purpose of the invention is to increase the threshing efficiency and reduce grain losses.

The goal is achieved by the fact that the trays are installed under the scrubbing bodies, each of which is made in the form

pairwise matching curvilinear elastic fingers.

Pairs of fingers of each combing organ Are offset relative to each other in height and in the direction of movement of the device.

The stiffness of the upper fingers of each combing organ is less than the stiffness of the lower fingers.

FIG. 1 is a diagram of the device, type 10; in fig. "2 - pairs of combing before interaction with the stem, top view; in fig. 3 the same, when interacting with the stem; in fig. 4 shows section A-A in FIG. 2 when interacting with the stem.

The device for threshing agricultural crops at the root contains dividers 1, reel 2, combing organs 3, each of which is located between adjacent dividers, conveyors are screw 4 and scraper 5 and trays 6 for collecting threshed grain installed under combing organs 3. Each The combing body 3 is made in the form of three pairs of connected curvilinear elastic fingers. The pairs of fingers of each combing organ are displaced relative to each other in height and in the direction of movement of the device. The fingers are made in such a way that the rigidity of the upstream fingers of each combing organ is less than the rigidity of the downstream fingers. This is due to the varying degree of ripeness of the grains in the height of the stem. In the upper part of the stem the grains are more easily separated than in the lower. The ends of each pair of fingers are divergent from each other to provide a free exit from the gap between the fingers of randomly detached stems.

The device works as follows.

During the forward movement of the device across the field, the dividers 1 form longitudinal rows from the stem, which are fed to the upper pairs of combing fingers 3 by the reel 2. As the device advances, the stalks standing on the root become pinned and form a gap between the fingers and In this case, the grain from the panicles is stripped off and into the trays 6, from where the screw 7 and further to the scraper 5 conveyors arrive. Further, the stems are pulled through subsequent pairs of combing fingers 3, where the remaining grain is separated from the panicles. The peeled stalks emerge from the gap between the fingers, giving way to other stems. The number of pairs of fingers, their rigidity, are determined by specific conditions, and depend mainly on the physicomechanical properties of the harvested crop.

Curvature of fingers in a vertical plane provides reliable brushing off

in the short section of the fingers at virtually any translational speed of the device across the field.

The proposed device provides increased threshing efficiency and reduced grain losses.

Claims (3)

1. A device for threshing agricultural crops at the root containing dividers, combing organs, each of which is located between adjacent dividers, and trays for collecting threshed grain, characterized in that, in order to increase the threshing efficiency and reduce grain losses, the trays are installed combing organs, each of which is made in the form of pairwise coupled curvilinear elastic fingers. 2. The device according to claim 1, characterized in that the pairs of fingers of each combing body are displaced relative to each other in height and in the direction of movement of the device. 3. The device according to claim 2, characterized in that the stiffness of the distended fingers of each combing organ is less than the rigidity of the lower fingers. Sources of information taken into account in the examination 1. USSR author's certificate No. 380269, cl. A 01 D 41/08, 1973. 2. US patent number 3690050, class. A 01 D 41/08, 1972 (prototype).