DE430675C - Plant chopping machine with a chopping frame that can swing on the chassis and one or more load and relief springs - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
24. J UN 11926

REICH PATENT OFFICE

PATENT LETTERING

- M 430675-CLASS 45 a GROUP

(A.

Patented in the German Empire on May 23, 1924.

In plant chippers for beets, potatoes, grain and the like, the chopping frame usually mounted on a shaft and moved by a control lever. As a burden come in particular when working and as a relief for easy lifting off the ground Weights for use, which mostly roll on or between levers or are otherwise adjustable. The order These weights have the disadvantage that the chopping machine is very heavily loaded and the wheels of the same as a result penetrate very deeply into the soft ground. As a result, the draft animals are very busy, and moreover are if there is a close row, e.g. B. in cereals, the delicate roots are damaged and torn off, which amounts to a hindrance to growth. This was sought to be remedied by that instead of the weights, coil springs have been used to load and relieve the hoe frame. Such

Claims (3)

Plant chopping machines have the disadvantage that the increasing force of the helical springs has to be overcome from each of the two end positions to the dead center position of the chopping frame without precautions being taken to counteract the resulting high stress on the driver. The present invention helps this ίο grievances and aims at the same time ^ to adjust the force of the coil springs as needed. It consists essentially in the fact that in the case of plant chippers with a chopping frame arranged to swing on the chassis and a loading or relief device consisting of one or more helical springs (tension springs), the upper ends of the helical springs are rotatable on one or more arched, in bearings of the chassis, run through a linkage with the hacking frame articulated rails, while the lower ends of the screws are arranged vertically adjustable springs on the chassis of the machine. The upper end of each spring is expediently taken by a bracket, which is provided with a roller running on the bow rail. The bow rail forms a two-armed lever, so that die.Feder, when it is with its upper end to the left of the pivot point of the lever , loads the hoe frame when its upper end is shifted to the right beyond the pivot point, relieves the frame or lifts it out. Each of the curved rails is provided with two adjustable stops to limit the movement path of the oscillating spring. In the drawing, Fig. 1 shows a side view of an embodiment of such a machine and Fig. 2 shows a "plan view" of the latter. Fig. 3 shows a view of the spring suspension and Fig. 4 shows a vertical section through the latter. In the chassis α a shaft b is mounted around which the frame d (the chopping frame) carrying the chopping knives c is pivotably arranged. This is articulated by pull rod e to the lever arms /, the latter being fixed on a square shaft g which is in the bearings h des The curved rail i is attached to one side of the rotatable square shaft g. On larger machines, the same curved rail can also be attached to the other side of the square shaft g. The roller I of a bracket k runs on the curved rail i (see in particular Fig 3 and 4), which holds the upper end of a helical spring M. The lower end of the latter is connected to a tensioning screw η, which se Vertically adjustable is attached to a flat iron 0 of the chassis of the machine. p and P1 are stops which can be moved on the curved rail i and locked by means of adjusting screws and which limit the path of movement of the bracket k of the oscillating spring m, q is the control lever. In Fig. Ι the working position of the tools is shown with full lines, while the dashed lines show the rest position of the same. The curved rail is designed so that the chopping frame d is in equilibrium in every position, that it is loaded by the spring b in the working position and relieved by the same in the rest position. Depending on requirements, the spring m can be stretched more or less. When the control lever q is raised slightly, the roller Z of the bracket k of the spring suspension will immediately run from the position shown in full lines to the stop P1, which brings the hoe frame into the position shown in broken lines (rest position). Likewise, by slightly tightening the control lever q, the backward movement of the roller I up to the stop p will occur, whereby the hoe frame is brought back into the working position. go patent claims: 1. Plant chopping machine with chopping frame arranged on the chassis so that it can swing and relief springs, one end of which is fastened to the chassis, the other ends of which are rotatably mounted with the chopping frame are guided by rods connected running rails, characterized in that the rails after Kind of a two-armed lever extend on both sides of their axis of rotation, so that the springs the hoe frame in the rest position relieve, load in the working position. 2. Plant chopper according to claim i, characterized in that the upper end of the oscillating spring (m) is grasped by a bracket (k) which is provided with a roller (I) running on the curved rail (i) . no 3. Plant chopping machine according to claim ι and 2, characterized in that the curved rail (i) is provided with two displaceable stops (p, P ₁ ) to limit the movement path of the oscillating spring in) . For this purpose ι sheet of drawings.