RU2125786C1 - Apparatus for selecting straw and chaff samples from grain combine - Google Patents

Abstract

FIELD: agricultural engineering. SUBSTANCE: apparatus has cassette with straw and chaff collectors positioned one upon the other. Rotary shaft with two disks is arranged in front part of apparatus below cassette. Disks are provided with circumferential slots. Two tines are positioned in rear part of cassette, each tine being provided with vertical slot, support and spring. Construction of apparatus allows straw and chaff collectors to be ejected from cassette in direction opposite to combine advancement direction. Rear and front parts of collectors are ejected in succession onto stubble. Such construction allows wedging of collector in cassette and deformation during ejection to be eliminated. EFFECT: increased efficiency and simplified construction. 2 dwg

Description

 The present invention relates to the field of agricultural combine building, in particular to the testing of combine harvesters.

 A device according to ed. St. N 1005714, cl. A 01 D 75/00. A device for determining grain loss by a combine harvester. The device comprises a cassette with rectangular collectors stacked sequentially on each other (in tiers) and a mechanism for individually dropping them onto the soil surface. The collector dropping mechanism consists of four vertical rotary shafts. On each shaft, two discs with cuts that are in the form of a segment are rigidly fixed.

 Each straw and floor collector has a rigid frame with grooves for the entry of discs on the outside. When dropping collectors, the four shafts with discs must rotate synchronously, and the collectors must fall parallel to the soil surface when dropped. However, due to shaking and vibration transmitted from the harvester, as well as a delay in the rotation of the rear shafts with discs, there are cases of outrunning the fall of the front and jamming of the rear of the collector in the cassette.

 In this case, collectors and other elements of the device are destroyed. This device is installed under the combine harvester at a distance from the soil surface equal to the height of the stubble, therefore, the stub rests on the collectors and does not allow them to fall, i.e. the device is inoperative.

 To increase the reliability of the design and the process of the entire device, it is proposed to simplify the design of the mechanism of piece-by-piece ejection of collectors and to eject them by force backwards in the direction opposite to the course of the combine as follows.

 1. Instead of four vertical shafts with two disks on each, install one horizontal shaft with two rigidly mounted disks with cutouts in the front part of the cartridge under the collectors.

 2. Simplify and lighten the frame of the collectors - perform it without side cutouts.

 3. Instead of the back wall of the cassette, install elements that hold the back of the collectors and ensure its initial fall.

 In FIG. 1 shows a design diagram of the mechanism for the piece emission of straw and floor collectors; in FIG. 2 - fixation of collections in racks of the cartridge of collections.

 In the front part under the cassette, a horizontal rotary shaft 1 with two rigidly mounted vertical disks 2 is installed. In this case, the axis of the shaft and the front part of the frame contour of the collectors 3 are parallel to each other and are in the same vertical plane.

 Disks on the outer circumference have cutouts that capture the lower collection, cut it off from the upstream collections and push it back.

 On the continuation of the rear part of the collector circuit, spikes 4 protrude on both sides, which can freely move in the vertical channels of the struts 5. The lower edge of the channels of the racks is closed by a horizontal platform 6, and the output window at the rear is closed by the end of the spring 7.

 The device operates as follows.

 The first collection of spikes 4 is inserted into the vertical channels of the uprights 5, and the front part fits into the cutouts of the disks 2, then the rest of the collections are laid on it. After laying all the collectors by turning the shaft clockwise, the lower collection is cut off by the disks 2 from the upstream collections and moves backwards, pressing the end of the spring 7 with the spikes 4, and, having passed the horizontal platform 6, falls backward on the stubble, and the upstream collection falls to the freed platform. .

 Subsequently, under the action of the friction force of the rear part of the collectors against the stubble and the further rotation of the shaft 1, the front part of the collectors comes off the cutouts of the disks and falls down. After ejecting the lower collector, the shaft 1 is turned counterclockwise, and the front part of the frame contour of the upstream collection enters the cutouts of the disks 2, and the process is repeated.

Claims (1)

 A device for sampling straw and floor from combine harvesters, comprising a cassette with collectors and a rotary shaft with two disks having cutouts, characterized in that the rotary shaft with disks is mounted horizontally, and the cassette is made without a rear wall and is equipped with two racks with vertical channels and two springs for fixing the collectors, while the collectors have spikes installed in the vertical channels of the racks with the possibility of movement.

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