DE1197662B - Support wheel arrangement for reversible plows - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

Number:
File number:
Registration date:
Display day:

AOIb

German class: 45 a - 55/00

1197 662
B 78673 HI / 45 a
September 25, 1964
July 29, 1965

The invention relates to a support wheel arrangement in reversible plows with one on the plow frame swiveling support wheel.

For reversible plows that are to be kept at an even working depth, there are either two Support wheels required or a support wheel, which when turning the plow from one side to the others are swiveled around and held in the new position in a certain position. The usage of two support wheels is very expensive due to the high cost of materials and often for reasons of space not feasible.

For these reasons one tries with one Get along with the support wheel, which is adjustable in depth and automatically changes its plow Position changed in such a way that the distance to the respective working plow side remains the same. at pivotally mounted support wheel arrangements of known design must then but the stop, or the ratchet can take up the full weight of the support wheel. This creates a very high one Wear of the rotating parts, the stop or the ratchet device and the wheel bearings, and also the material expenditure is also very large in this design.

In a further known embodiment, a reduction in the falling speed of the pivotable supported support wheel achieved by the frictional resistance of the pivot. Here too, the the frictional resistance causing parts a very great wear, so that they are readjusted very often or need to be replaced.

Another known design sees the guide bracket for the support wheel support arm two under spring pressure standing steel balls in front. The support wheel support arm tilts up to one of these balls when the plow is turned after crossing the horizontal plane. After a complete turn of the plow by 180 ° overcomes the weight of the support wheel the restraining force of the springs of this and the second ball and falls to End limitation by. Again, hard blows cannot be avoided.

The object of the invention is to prevent these disadvantages and in particular when Turning the plow occurring free fall of the support wheel to slow down.

This object is achieved according to the invention in that between the pivotably mounted support wheel and plow frame a known double-acting damping cylinder is arranged.

In a preferred embodiment, this damping cylinder is by means of its closed end Support wheel arrangement for reversible plows

Applicant:

Bavarian plow factory G. m. B. H.,

Landsberg / Lech

Named as inventor:
Dr.-Ing. Alfred Eggenmüller,
Landsberg / Lech

a pivot on the plow frame and the eye of the cylinder piston rod at the end of one over articulated the pivot point extended part of the support wheel carrier.

In a further embodiment of the support wheel arrangement according to the invention is a guide means and Pivotably mounted two-armed ratchet levers are provided to limit the stop.

The invention is shown in the drawing on the basis of one Embodiment explained in more detail; is therein

A b b. 1 is a side view of a reversible plow with a double-acting damping cylinder and support wheel in working position from the land side,

Fig. 2 is a partial view of the double-acting damping cylinder and the support wheel in excavated form Position of the reversible plow,

Fig. 3 is a top view of the arrangement of Fig. 2,

Fig. 4 is a side view of the support wheel arrangement in a position pivoted by 180 ° from the field side the end,

A b b. 5 shows a side view of the support wheel arrangement in a position pivoted through 180 °, the support wheel is already parallel to the plow frame due to its high weight.

The support wheel arrangement with support of the support wheel 2 on the reversible plow 1 consists of a double-acting Damping cylinder 6 and a two-armed ratchet lever 5. The closed end of the The damping cylinder and the ratchet lever at its angle are around a common pivot 4 pivotally mounted on the plow frame 1 ″, the pivoting range of the ratchet lever through stop surfaces 9 also attached to the plow frame 1 ″ is limited. The free end of the piston rod is with his eye 10 at the end of one

509 628/100

extended beyond the pivot point 3, enclosed by a guide pocket 8 part of the Articulated support wheel carrier. This articulated connection is made via a pivot 7, which is in Working position of the plow against the outer surface of the upper leg of the ratchet lever 5 to the plant comes.

The mode of operation of the damping device is as follows: According to A b b. 1 reversible plow 1 in the working position is lifted (Fig. 2). As a result of its own weight, the support wheel 2 swivels slightly downwards, pulling the piston out of the damping cylinder 6 and thereby lifting the stop of the pivot 7 on the ratchet lever 5 (Fig.3). The reversible plow 1 is pivoted through 180 ° (A b b. 4). The ratchet lever 5 now falls down until it rests on the stop surface 9 and releases the pivoting range of the support wheel 2, which pivots downward by its own weight and pushes the piston back into the cylinder 6. As soon as the support wheel 2 has overcome the parallel with the plow frame 1 ″ (A b b. 5), the piston is pulled out of the cylinder as far as it will go (A b b. 2). The reversible plow 1 is set down the support wheel 2 pivots upwards and thereby pushes the piston into the damping cylinder until the pivot 7 rests on the ratchet lever 5, thereby restoring the support of the support wheel 2.

If a double-acting cylinder is preferably used, the damping resistance is in the same size in both stroke directions.

Claims (4)

Patent claims: 1. Support wheel arrangement for reversible plows with a pivot mounted on the plow frame Support wheel, characterized in that between the pivotably mounted support wheel (2) and the plow frame (1 ") a known double-acting damping cylinder (6) is arranged. 2. Support wheel arrangement according to claim 1, characterized in that the damping cylinder (6) with its closed end by means a pivot pin (4) on the plow frame (1 ") and the eye (10) on the cylinder piston rod hinged to the end of a part of the support wheel carrier which is extended beyond the pivot point (3) are. 3. support wheel arrangement according to claim 1 and 2, characterized in that as guide means and a two-armed arm pivoted about the pivot pin (4) to limit the stop Ratchet lever (5) is provided. 4. support wheel arrangement according to claim 1 to 3, characterized in that the ratchet lever (5) in its passage of the pivot pin (7) connected to the piston eye (10) Swivel range limited by stop surfaces (9) attached to the plow frame (1 ") is. Considered publications:
German patent application K12543III / 45 a
(announced on January 22, 1953). 1 sheet of drawings 509 628/100 7.65 © Bundesdruckerei Berlin