DE1241656B - Cabbage cutter, especially for potato harvesters - Google Patents

Description

GERMAN '// WWW * PATENTAMT

EDITORIAL

German class: 45 c -33/06

Number: 1241 656

File number: A 45938 III / 45 c

1241 656 Filing date: May 2, 1964

Open date: June 1, 1967

The invention relates to a haulm cutter, in particular for potato harvesters, which is arranged at a lateral distance from the lifting coulter on the machine and has knives that move relative to each other like scissors and at least one of which is not driven and pivotable and adjustable in height with the aid of an adjusting device on the machine and is guided with its tip close to the ground or over the ground surface during operation slides. It is used to solve the problem, which is long and on the sides with some types of potatoes drooping potato ridges and often extremely tough when half-dead To cut potato tops safely, so that when the potato ridges are picked up by the lifting coulter no blockages can occur in this.

A cabbage cutter is already known which is equipped with a rotating knife disc and in which the herb to be cut is lifted from the ground by a pick-up arm. With help an adjusting lever can be this receiving arm depending on the nature of the ground or the length of the Adjust the herb to different heights. For this purpose, the lever has an elongated hole at its lower end, in which a bolt engages, which is firmly connected to the receiving arm. In this elongated hole the bolt can move when the hand lever is adjusted. However, since the slot is not in the direction of movement of the bolt runs, the receiving arm cannot turn itself during operation move up and down. Even if the receiving arm moves through the elongated hole during operation Could adapt to unevenness in the floor, there is a limit to movement due to the length of the slot given above and below. The front part of the pick-up arm hits you above the ground protruding larger stone, such cases occur in practice when harvesting potatoes on stony soils frequently, the arm could also move downwards and would be drawn into the ground. If the stone cannot be easily torn out of the ground, it will inevitably have to be laid or breaks in the pick-up arm.

These disadvantages are avoided according to the invention in that the adjusting device limits the height of the non-driven knife firmly downwards in every position. This fixed limitation allows the working depth of the device to be adjusted once. At the same time, the non-powered knife, which adapts to the unevenness of the ground, is used in the event of obstacles, in the case of herb trimmers, in particular for
Potato harvesters

Applicant:

AMAZONEN-Werke H. Dreyer,
Guests (district of Osnabrück)

Named as inventor:
Dipl.-Ing. Dr. Heinz Dreyer,
Guests (district of Osnabrück)

for example with heavy stones, only move upwards so that there is no danger that this part of the device is pulled into the ground by such a stone, thereby inevitably The machine would break.

In a further embodiment of the invention, the driven knife or knives extend into the close proximity of the front end of the non-driven knife, and the cutting edges of the knives also extend almost to the front ends of the knives. This achieves a clean and trouble-free separation of the potatoes. The cabbage stalks, which are often tough, do not need to be conveyed and lifted only over a longer guide to the cutting device. Through this Potato losses and damage during the cutting process are avoided.

It is finally provided according to the invention that the pivotably arranged and non-driven Knife is positively connected to the device for raising and lowering the lifting coulter. This ensures that the herb cutter without any special switching device and its operation brought into working position or transport position in one go together with the lifting coulter can be.

An exemplary embodiment of the invention is shown in the drawing. It shows

F i g. 1 the cabbage cutter on the front part of a potato harvester in side view and

F i g. 2 shows the same arrangement in the view from above.

The herb cutter consists of a long knife 1 and a short knife 2, which is pivotably arranged with its rear end approximately in the middle of the long knife 1. Cutting edges 3 are arranged on both knives 1 and 2. Also located

709 588/90

Claims (3)

At the rear end of the knife 1 there is a bushing 4 with which it is pivotably arranged on a sleeve 5 which is located at the lower end of a carrier 6 and in which a shaft 7 is rotatably mounted. The carrier 6 also has tabs 8, 8 'at its lower end, via which it is fastened to the lower tube 10 of the machine frame with the aid of a U-bolt 9, while the same U-bolt 9 is used to fasten it to the upper frame tube 11. From the rear end of the knife 2 a strut 12 protrudes upwards, which on its upper part carries a pin 13 on which a rod 14 is rotatably mounted. The other end of the rod 14 is also mounted on a pin 15 which is located on the upper part of a lever 16 which is fastened on the shaft 7. On its other side, the shaft 7 carries a lever 17 which is connected to a disk 19 via a connecting rod 18. This disk 19 is fastened on a shaft 20, which serves at the same time to support a frame 21 and to drive a screen belt 22 arranged on this frame 21. During operation, the lever 17 is moved back and forth by the connecting rod 18. This movement is transmitted via the shaft 7, the lever 16, the rod 14 and the strut 12 to the knife 2, which is thereby moved like scissors against the knife 1, so that the herb parts picked up by the knife are safely cut. So that the knife can be precisely adjusted according to the depth of the trough over the bottom of which it is to grind in the working position, it is equipped with an adjusting device 23, which consists of a holder 24 attached to the knife 1 and an end of the holder 24 that is bent over at the top Attached adjusting screw 25 consists. This adjusting screw 25 is supported on a bearing plate 26 which is fastened on the bracket 8 'and on the carrier 6. A bolt 27 is also welded to the holder 24, to which a rail 28 is articulated, which connects an adjusting device 23 to a crankshaft 29 pivotably arranged on the frame tubes 11. This crankshaft 29 is pivoted back and forth by a switching device, not shown, and is used via levers 30 and rods 31 attached to this crankshaft 29 to lift the sieve belt frame 21 and a coulter 32 attached to the front end of this frame 21 in the transport position and lower it into the working position . So that the knife 1 of the herb cutter can adapt to any unevenness in the potato trough at any time regardless of the changes in position of the coulter 32 in the vertical direction, an elongated hole 34 is arranged in the rail at the point of engagement of a pin 33 attached to the crankshaft. In order to also achieve reliable gripping of the herb parts that are higher above the potato trough, a bracket 35 is welded to the front end of the knife 2 and, after a bend, is guided to the upper end of the strut 12. Patent claims: 1. Cabbage cutter, especially for potato harvesting machines, which is arranged laterally from the lifting coulter on the machine and has knives that move relative to each other like scissors and of which at least one is not driven and pivotable and adjustable in height with the help of an adjusting device Machine is arranged and is guided with its tip close to the ground or slides over the ground surface during operation, characterized in that the adjusting device (23) limits the height of the non-driven knife (1) in every position firmly downwards. 2. Haulm cutter according to claim 1, characterized in that the driven knife or knives (2) extend into the immediate vicinity of the front end of the non-driven knife (1) and that the cutting edges (3) of the knives (1, 2) likewise extend approximately to the front ends of the knives (1, 2) . 3. Haulm cutter according to claim 1 or 2, characterized in that the pivotably arranged and non-driven knife (1 ) is positively connected to the device for raising and lowering the lifting coulter (32). Considered publications:
Austrian patent specification No. 22 462 ,,
094; U.S. Patent No. 869 103,1 040 234,
982 240, 2 547 355. 1 sheet of drawings 709 588/90 5.67 © Bundesdruckerei Berlin