PL69985Y1 - Forage harvester for harvesting leaves - Google Patents

Abstract

The subject of the application is a modification of the construction of a forage harvester intended for harvesting leaves of agricultural plants grown for green fodder. The forage harvester is equipped with a flail-type cutting unit with a cutting drum, characterized by the fact that working elements are mounted on the drum (1) in four rows, and in (2) opposite rows in hinged holders (5) with screws, chains (8) are fastened, and in the remaining (2) opposite rows, springs (9) are fastened in hinged holders (5) with bolts, the working end of which is arc-profiled in the opposite direction to the direction of drum operation.

Description

Pattern description

The subject of the utility model is the modification of the structure of a green forage cutter intended for harvesting leaves of agricultural plants grown for green fodder.

Most plants in the early stages of development mainly form leaves. The yield is then low, but the quality of the forage is high, because the leaves are the most valuable part of the plant, because they primarily accumulate protein, vitamins and other biologically active substances. Separate harvesting of alfalfa leaves and stalks is described in the literature using a modified green bean pod harvester (USA) or with an appropriately adapted Fortschritt E303 green forage cutter (Sweden). In both of these cases, the leaves are torn off by rigid rods fixed on the rotor / drum, and their number, length, arrangement and the rotational speed of the drum as well as the driving speed of the machine determine the harvesting efficiency. Both solutions involve the modification of heavy, costly, technologically advanced agricultural machinery.

Machines equipped with a flail-type cutter with a cutter having 25 knives / beaters are known. These cutters are used primarily for harvesting the whole yield of low-stem green forage plants, as well as for grinding, among others straw or haulm and pneumatic transport of plant material to a trailer or outside the machine, to the field.

The solution according to the formula consists in developing a cheap, simple and easy-to-use structure of the forage cutter, using mostly original construction elements. The modification is reversible and easy to do on any farm.

The essence of the pattern is a modification of the working part of the known forage cutter, consisting in the working elements in the form of chains and fastened in 2 opposite rows in hinged holders, and in the remaining 2 opposite rows, springs opposite to the direction of the drum operation are attached. The pattern chipper has a shear drum 1, located perpendicular to the direction of travel / operation of the machine, where along the drum 1, four bars 2 are attached parallel to each other, to which the axles 4 are fastened by means of hinge holders 3, to which by means of holders hinged 5, separated by spacer sleeves 6 in two opposite rows by means of bolts 7, a chain 8 is fastened, consisting of five links, with a clearance of 24 mm, 6 mm thick, with three external links being effective in operation, and two internal links fastened with a bolt 7.

Springs 9 are fastened to the remaining 2 opposite rows of axles in the hinge holders 5 by means of screws 7, the working end of which is arcuate in the direction opposite to the direction of operation of the drum.

Thanks to such a structure, each of the 25 working elements deflects in the plane of their work +/- 90 °, making them resistant to hard obstacles, e.g. stones.

During operation, the rotating drum together with the working elements tear off only the leaves and other delicate parts of the shoots of the harvested plants. The flat surfaces of inverted springs generate a sufficiently strong air stream to transport the harvested mass to a trailer hitching behind the machine or outside the machine, which has been experimentally verified in the field.

An embodiment according to the formula is shown in the accompanying drawings, in which, Fig. 1 is an end view of the cutter drum with operating elements, Fig. 2 is a side view of the chipper drum. 1.- drum, 2.- rails for fixing working elements, 3.- hinged handles fixing axes on bars, 4. - axles, 5.- hinged handles fixing working elements to the axis, 6.- distance sleeve, 7.- mounting screws working elements in hinge handles, 8. - chain, 9. - spring.

Claims (2)

Protective reservations 1. A forage cutter equipped with a flail cutter with a cutting drum, characterized in that on the drum 1 in four rows working elements are mounted, while in 2 opposite rows in hinged holders 5, chains 8 are fastened with screws 7, and in the remaining 2 opposite rows, springs 9 are fastened in the hinged holders 5 by means of screws 7, the working end of which is arcuate in the direction opposite to the direction of operation of the drum. 2. The cutter according to claim A chain as claimed in claim 1, characterized in that the chain links 8 have a clearance of 24 mm and a thickness of 6 mm, the three outer links being operatively effective, and the two inner links being fastened with a bolt 7.