DE8416718U1 - Beet harvester - Google Patents

Description

- 3 - (546 gm)

The invention relates to a trailed beet harvesting machine with a machine unit that receives the individual machine units Machine frame, the rear by means of two interconnected steerable wheels (rear wheels) is supported on the ground and at the front end one can pivot sideways has articulated drawbar, with between the controllable drawbar and the machine frame A remotely controllable length-variable actuator is arranged as the hypotenuse of a joint triangle. 10

Such beet harvesting machines have become known several times in practice. There is still the disadvantage that the Directional driving on slopes is extremely difficult due to the drifting of the machine and / or a so-called "Slope disc" makes necessary. The steerable rear wheels must also be controlled separately by the tractor driver which is cumbersome and requires great concentration.

The invention is therefore based on the object to provide an improved beet harvesting machine with a simple built-up and easy-to-assemble device to facilitate directional driving on slopes is.

According to the invention this is achieved in that on the drawbar in front of their rear articulation point on the machine frame, two each only acting in one direction flexible tension members (tension members) (7, 8), preferably Bowden cables, are attached to each side of the machine assigned as well as outwardly offset at a lateral distance from the drawbar articulation point on the machine frame and with its rear end with the steerable

- 4 - (546 gm)

Rear wheel of the other side of the machine are connected, so that when the drawbar is pivoted to one side of the machine, the steerable rear wheels are pivoted to the other side of the machine.
5

In such a beet harvester, the steerable drawbar ensures that the steerable rear wheels are automatically controlled and steerable rear wheels are dependent on the relative movement between the drawbar and the machine frame, even on slopes. The assembly of the device for automatic rear wheel steering is simple and can also be retrofitted d, - h. on existing machines.

The movement path of each flexible pulling element is preferably adjustable, whereby the maximum pivoting angle of the steerable rear wheels changeable / determinable.

In a preferred embodiment, the drawbar is control device connected to a control device that scans the beet (row) to be lifted, so that a fully automatic control of the tractor-drawn beet harvester into the beet row (s) takes place. In this case, however, there may be a device that also allows manual control of the drawbar steering cylinder allows.

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- 5 - (546 gm)

On the drawing is a schematic representation Top view of a tractor-drawn beet harvester shown with rear wheel steering according to the invention.

The beet harvester according to the invention is available as a "pulled" Machine provided with a machine frame 1, at the front end of which a drawbar connected to a tractor 2 is mounted in the joint 3 so that it can pivot sideways. The hypotenuse extends between the drawbar 2 a hinge triangle a remote controllable variable length actuator 4, preferably a hydraulic. Cylinder-piston unit. Instead of this articulated at both ends The stored "hydraulic cylinder" can also be a pneumatic cylinder, a spindle moved by an electric motor or the like. Be arranged.

The Rlibenerntemaschi ne can be carried out in one or more rows - in a preferred manner, it is multi-row (in particular six-row) working beet harvester and has steerable rear wheels δ.

For the preferred automatic control of the beet harvesting machine in relation to the direction of travel F one cannot The control device shown in more detail can be provided, the touch probe 6 of which is connected to the machine frame 1, scans the row of beets to be cleared as well as the required one Adjusting movement of the variable-length actuator 4 (so-called drawbar steering cylinder) initiates or controls, A device can also be provided (e.g. interposed) which both automatic control as well as manual control of actuator movement enables.

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(lit

t 1 I

- 6 - (546 SM)

For the purpose of switching off or locking the so-called. Wire control for road travel, can be placed between the machine frame 1 and the drawbar 2 a switchable locking device, like Rigid Stable Strut Od. Like., attached will.

So that the beet harvester can be driven in the right direction even on slopes and thus "ultimately a perfect clearing ensure, the two steerable rear wheels 5 via flexible tension members (tension members) 7, 8 in such a way with the Drawbar 2 coupled that with drawbar pivoting from the middle position to one side then at least the rear wheel 5 lying on the other side of the machine, opposite to the direction of pivoting of the Zugdeichspl Side is pivoted and counteracts the machine drift movement. The flexible pulling members 7, 8 are each assigned to a drawbar side, attached acting on one side and lead from the drawbar 2 to a offset to the outside at a lateral distance from the drawbar

Articulation point 3 lying guide point 9 or 10 on

Machine frame 1, from where they then each run to the steerable rear wheel 5 on the other side of the machine. In the area of a rear frame cross member, the two flexible tension members 7, 8 can be guided by a common guide device 11, preferably with two guide eyes. Preferably the two are flexible Tension members / tension members 7, 8 held and spring-loaded especially designed as a Bowden cable. So that the rear wheel swivel angle can be changed, are the two flexible traction organs 7, 8 in active movement

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(546 GM)

path (effective path) adjustable. With the shortest pulling element setting, the result is a rear roughness swivel angle of The rear wheel pivot angle is about 15 ° to the right and left and with the full effective pulling element length from the center position / straight-ahead position about 60 °.

Claims (2)

Expectations 1. Pulled beet harvester with one of the individual machine units receiving machine frame, the rear by means of two interconnected steerable Wheels (rear wheels) is supported on the ground and at the front end a hinged sideways swivel Has drawbar, with between the drawbar and the machine frame as a hypotenuse of a hinge triangle a remotely controllable length-adjustable actuator is articulated, characterized in that on the drawbar (2) in front of its rear articulation point (3) on the machine frame (1) two flexible tension members (tension members) (7, 8) each acting in one direction only, preferably Bowden cables are attached, each assigned to a machine side and thereby to the outside offset at the lateral distance from the drawbar articulation point (3) on the machine frame (1) and with its rear end to the steerable rear wheel (5) the other side of the machine are connected, whereby when the drawbar is pivoted to one side of the machine a - 2 - (546 gm) The steerable rear wheels (5) are pivoted to the other side of the machine. 2. Beet harvester according to claim 1, characterized in that each flexible pulling element (7, 8) is adjustable in the effective movement path. 3, beet harvesting machine according to claim 1 or 2, characterized in that that the rear wheels depend on the effective length of the tension members (7, 8) are mounted pivotable by about 15-30 °. 4, beet harvester according to one or more of the preceding Claims, characterized in that the drawbar control device with one of the to be cleared (s) Beet (row) scanning control device is connected.