SU1501955A1 - Rotary cutting apparatus - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery industry, in particular, to devices for rotary-type cutting machines of harvesting machines. The purpose of the invention is to improve the performance and reliability of the device in operation. The rotary cutting apparatus comprises a disk rotor 1, associated with it the cutting elements 4 and adjustable stops 7 and 8 located in a sector groove made in the rotor. On the rotor mounted levers, at least three. The lever 2 passes through the center of the rotor and is connected with it pivotally, while the other levers 3 are connected to the rotor eccentrically with the help of hinges. Cutting elements 4 are installed at opposite ends of the levers outside the rotor, each of which is pivotally connected to an eccentric spring connected 5 with the rotor 1 and the central levers. Moreover, the movement of the latter is limited by two adjustable stops 7 and 8 installed in the concentric sector groove 6 of the rotor 1. In the rotation zone, the apparatus has a protective casing made of vertically mounted strip elements 10, covered, besides the cutting zone, along the upper bearing associated with the apparatus. Depending on the payload applied to the cutting element, the latter acts on the central lever 2, which moves between the stops 7 and 8 and by means of the eccentric lever 3 and the spring 5 automatically changes the cutting angle of the cutting element. 2 hp f-ly, 2 ill.

Description

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The invention relates to agricultural machinery, in particular, to devices of rotary type cutting machines of harvesting machines.

The aim of the invention is to improve performance and reliability.

FIG. 1 shows a rotacioin cutting annarat, side view; on fi | -. 2 the same, top view.

The rotary cutting annarat contains a disk rotor 1. The lever 2 goes through the center of the rotor 1 and is connected to it iiiap- nirno. The other levers 3 are connected to the rotor 1 eccentrically using hinges. Each cutting element 4 is hingedly mounted outside the rotor 1 at the opposite ends of the levers central1 o 2 and eccentric 3. The spring 5 is connected at one end with the rotor 1, and the other with the eccentric lever 3. The sector groove 6 is made in the rotor 1 in the sector of displacement of the central lever 2 is concentric with respect to the center of the rotor 1. Two adjustable unors 7 and 8 are installed in the sector slot 6. The supporting element 9 is kinematically connected with the rotor 1. The strip elements 10 are installed vertically and are closed, besides the cutting zone sous carrier element 9.

Rotary cutting apnarat works in a manner.

Depending on the rigidity of the plants, the cutting angles QMBK and the cutting element 4 are set using stops 7 and 8, respectively, which restrict the movement of the central lever 2 in the sector slot 6. By moving one end of the spring 5 along the axis of the eccentric lever 3, the necessary rigidity of the spring 5 is established. In the idling mode of the aniarate, the central lever 2 is pressed by the spring 5 against the stop 7, and the cutting angle of the cutting element 4 corresponds. Depending on the payload applied to the cutting element 4, the next will act on the central lever 2, which,

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between the stops 7 and 8, by means of the eccentric lever 3 and the spring 5 automatically changes the cutting angle Q of the cutting element 4. The vertically mounted strip elements 10 protect the cutting elements 4 from overloads.

Changing the cutting angle depending on the rigidity of the plant increases the wear resistance of the cutting element, reduces the working time required for sharpening, and thus increases the productivity of the apparatus, improves the cut quality of the plants, levels the load transmitted to the supporting elements, reduces energy consumption and thus increases reliability the operation of the apparatus.

Claims (3)

Invention Formula . A rotary cutting apparatus comprising a disk rotor, a cutting element spring-loaded relative to it, means for fastening the cutting element, limited means arranged in a septum, made in the rotor, characterized in that, in order to increase productivity and reliability, the means of fastening the cutting element is made in the form of levers mounted on the rotor, one of which is hingedly connected to the rotor in its central part, and the other two are connected to the rotor eccentrically via P1 hinges, while the cutting el scharnirno cops mounted on the ends of the arms located outside the rotor. 2. The device according to item I, is distinguished by the fact that in the rotation zone it is provided with a protective cover, made in the form of vertically mounted elements, covered, besides the cutting zone, along the upper bearing element, kinematically connected with the apparatus. 3. The apparatus according to claim 1, characterized in that the limiting means is made in the form of two installed in the sector slot of the rotor.