DE1080810B - Bed plow coupled to the three-point hitch of a tractor - Google Patents

Description

Bed plows coupled to the three-point hitch in the form of a share or disc plow In an elevated position, the more unfavorable the load on the vehicles carrying them, the further their center of gravity is removed from the axis primarily supporting the device. The further this distance of the Center of gravity, the more the load on the front axle is relieved, the greater the forces in the three-point hitch and its articulation points on the tractor, the larger they become Forces in the device itself, especially in the vicinity of the three-point coupling level. By driving jolts and elastic oscillation of the worn devices, the static forces are multiplied.

In order to achieve the least possible stress in the tractor and in the device, the Center of gravity d, it carried device near the three-point coupling plane to be brought. However, the work function of many devices often just requires

To the three-point hitch
A bed plow coupled to a tractor

Applicant:

Bayerische Pflugfabrik GmbH,
Landsberg / Lech

Dr.-Ing. Alfred Eggenmüller, Landsberg / Lech,
has been named as the inventor

the reduction of the distance between the plow body and the rotary axis mat, which is aimed at there, at the same time

a center of gravity far removed from this plane. 20 also a shift of the plow body to be turned.For example, multi-share plows must have a long length in the direction of the connection point of the device on the direction, which means that their tractor is carried out, so this is a secondary focus far from the coupling plane whose effect is not intended and which is coming. Other devices, although not so utilisable to facilitate the excavation of the large length in the direction of travel, require a movement that is neither disclosed nor recognized there.
particularly high weight, e.g. B. disc peeling plows and these publishers aimed at according to the invention

tion of the bed plow during the excavation is now achieved in that mounted on vertical axes Parts of the plow over a strut with the

To achieve stresses. The now with the 30 upper link of the three-point hitch like this Work function required center of gravity distance pivotably connected, are that the center of gravity of the

pivotable plow part when lifting the plow necessarily closer to the three-point coupling level is brought than in the lowered state. This proposal can be broken down into various types Realize solutions. So is after an execution the shift in the center of gravity through the pivoting arrangement of parts belonging to the plow itself Share, e.g. B. the plow frame, achievable. In purposeful

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Disc harrows. With these devices, a relatively small shift of the center of gravity to the Towards a substantial reduction in the

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to automatically reduce the devices from the coupling level when lifting and carrying the devices Object of the invention.

Here use is made of the known basic idea that the effort for the rotary movement can be reduced if the counter torque is reduced by shortening the lever arm decreased. This is known to someone who turns 180 °

the reversible plow. The solution here is a version with one arm Parallel shifting of the plow bodies in one under one with the three-point hitching device acute angle to the axis of rotation verlaufendien NEN intermediate frame via a vertical swivel-slide guide; Jjeim. Lifting a spring pulls the plow frame connected to the peg over a purpose-built leg with plow body against the center of the axis of rotation, moderately adjustable rod on one in between the lever arm is shortened and the turning rotation is supported by the frame, standing upright and more or less vertical is facilitated accordingly. This to the facilitated. : Level, pivotable, above, with the upper handlebar

tion of the turning movements with reversible plows in the coupling connected to the three-point hitch

made suggestion is now connected to bed plowing exploited.

be, and here with the conscious intention, but it is the shift in focus after a

Distance from the center of gravity of the plow to be moved 50 further execution also by means of swiveling An

to decrease during the lifting movement, which as a result of this reduction in distance the excavation can be carried out with less force. Albeit as a result of the well-known reversible plow

Order of a load weight mounted on the plow frame on a vertical axis can be achieved. The loading weight arranged on the pivot axis is expedient here

"/,". 01 »507/125

attached to one end of a two-armed lever, and there is one engaging the other end Rod can be pivoted with a coupling that is firmly connected to the intermediate frame at the upper end mounted lever connected to the upper link of the three-point hitch.

The pivoting of the parts or the weights belonging to the plow itself can therefore be carried out around fixed axes or on multi-articulated devices, moving on guide rods or on or between other slideways.

The devices or weights are expediently shifted automatically when the three-point hitch is lifted, so that the stress on the tractor and the device is reduced even with short lifting distances.

The drawings show exemplary embodiments of the invention in plan view and side view.

Fig. La, Ib, lc, Id show a three-point disc plow, which consists primarily of three main parts, the coupling K ₁ the intermediate frame. Z and the actual plow frame P. The plow frame is articulated to the intermediate frame Z and can be pivoted about the approximately vertical axis A from the working position R ₁ into the raised position R _2. The intermediate frame Z is in turn arranged pivotably about an approximately horizontal axis on the coupling. The actual plow frame P and the coupling K are connected by a suitably length-adjustable rod S which has ball joints at both ends.

In the lowered state, the plow frame is pressed backwards by the work resistances against an adjustable stop Q into its working position R ₁ , its center of gravity distance from. the coupling name is α . If the three-point linkage is raised by the power lift, the coupling K swivels forward and, with the rod i ^1, pulls the plow frame P from its working position R ₁ to its raised position R ₂ , in which the center of gravity is only a ' from the coupling plane. The possibility of pivoting the coupling relative to the frame is limited by the limited pivoting possibility of the plow frame P about the axis A.

In FIGS. 1c and 1d, the reference symbols are each provided with an apostrophe.

FIGS. 2 a, 2 b, 2 c also show a disc peeling plow which, like that shown in FIG. 1, has the coupling K , which is assembled with the intermediate frame Z into one piece. The plow frame P can also be pivoted about an approximately vertical axis A _{1 here.} However, it is fixed and is not swiveled by A _{1 when the lifting rod is raised.} On the plow frame, a loading weight G pivotable about an approximately vertical axis A _{2 is} arranged on a two-armed support lever H. The free end of the support lever H is connected via a rod S ₂ to an angle lever W seated on the coupling K and pivotable about an approximately horizontal transverse axis, at the other end of which the upper link O engages. The rod S ₂ has ball joints at both ends. When the three-point linkage is raised, the angle lever is pivoted counterclockwise, the rod S ₂ pushes the weight G forward - closer to the coupling plane of the three-point linkage. In the working position of the plow, the weight consequently has a greater distance from the center of gravity from the paddock than in the raised position. The reference symbols used otherwise correspond to those in FIG. 1.

For devices whose tools are divided into groups, e.g. B. with disc harrows, the groups can can also be swiveled for itself.

Claims (5)

PATENT CLAIMS: 1. To the three-point hitch of a tractor or other. Vehicle coupled Bed plow, characterized in that parts of the plow mounted on vertical axes a strut with the upper link of the three-point attachment device is connected in such a way that it can be pivoted are that the focus of the pivotable plow part when lifting the plow inevitably is brought closer to the three-point coupling level than in the lowered state. 2. Conventional plow according to claim 1, characterized by the pivotable arrangement of parts belonging to the plow itself, for. B. the plow frame (P). 3. A bed plow according to claim 2, characterized in that the plow frame (P) connected via a vertical pivot pin (A) connected to an arm of an intermediate frame (Z) connected to the three-point hitching device via an appropriately length-adjustable rod (S) to an intermediate frame ( Z) mounted, upright, in an approximately vertical plane pivotable, above with the upper link of the three-point hitch connected coupling (K) is connected. 4. A bed plow according to claim 1, characterized by the pivotable arrangement of a loading weight (G) mounted on the plow frame on a vertical axis (A _2). 5. A bed plow according to claim 4, characterized in that the loading weight (G) arranged on the pivot axis (A ₂ ) is attached to one end of a two-armed lever (H) and a rod (S ₂ ) engaging at the other end with an on is connected to the upper end of the coupling (K ) firmly connected to the intermediate frame (Z) and pivotably mounted to the upper link of the three-point hitching device · connected to the lever (W) . Considered publications:
German patent specification No. 923 280. 1 sheet of drawings © 00Ϊ 507/125 i.