DE9100178U1 - Device for pivoting attachment of a trailing device - Google Patents

Description

Dipl.-Ing. Diyl.-Oek. JAN G. TONNIES Attorney at Law Patent Attorney

Attorney Jan G. Tönnies, Niemannsweg 133, 2300 Kid 1 Telephone 0431/84075 Fax 0431/84077

Volksbank Kiel (bank code 210 900 07) 14 84 21.4

German Patent Office
Zweibrückenstrasse 12

Munich 2

7' ' " New registration B 5109

WiIh. Chr. Brix GmbH, 2341 Mohrkirch

Device for pivoting mounting
a trailing device

The invention relates to a device for pivotably fastening a trailing device to a towed device, in particular to a disc harrow towed by an agricultural tractor, with arms connecting the trailing device to the towed device.

When using a trailing device such as a spade roller harrow or a packer roller on a primary towed device, e.g. a disc harrow, it is necessary to position the trailing device approximately 30 cm apart, since the leading harrow throws the soil outwards by approximately this amount.

JAN G. TONNIES
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If you mount the trailing device firmly in this position, you get a transport width that is at least 30 cm higher than the working width. However, for road transport there is currently a maximum permitted transport width of 3.00 m. This measurement is already used as the working width and it makes sense that this measurement should also be retained as the working width.

The task is therefore to create a device with which a trailing device can be pivotally attached to a first towed device. Furthermore, the device should be easy and reliable to operate and be very robust.

According to the invention, this object is achieved in that the arms connecting the towed and trailing devices are pivotably connected to the respective devices at both ends via a vertical axis, a fastening for an actuating element that can also be rotated about a vertical axis is provided in the area of a pivot point of the arms on one of the two devices, and the fastening and the actuating element are shaped in such a way that the actuating element comes into contact with the arms during a pivoting movement and pivots them sideways using leverage.

Such a design has the advantage that the very large forces that have to be applied to pivot the rather heavy trailing device are significantly reduced by the leverage effect.

Nevertheless, the mechanics are so simple and robust that malfunctions are practically not to be expected.

JAN G. TONNIES

It is suggested that the attachment be located in the area of the pivot point of one of the arms on the side of the towed device. This has the advantage that the person operating it can approach the trailing device from behind and easily operate the operating element.

In a further preferred embodiment, it is proposed that the actuating element is removable. This ensures that the actuating element does not suffer any damage during work in the field or that its spatial extension does not interfere with the performance of the work.

An alternative, permanent connection to the fastening is of course conceivable, but then additional means of protection should be available, e.g. by providing a joint to fold away the actuating element. In contrast, a removable actuating element is preferred.

It is suggested that the fastening is a socket that can be plugged in. This has the advantage that the actuating element can be connected to it by simply inserting it and can be removed just as easily. Forces should preferably only act on the actuating element in a transverse direction.

It is advantageous for the bushing to be pivotably mounted on the same axis as an arm. This makes it easier to operate because the pivot point of the arm and the actuating element then coincide.

A straight rod is proposed as the actuating element.

JAN G. TONNIES

It is further proposed that the arms can be locked in the positions between which they can be pivoted by means of a pin which runs through both the arm and the element supporting it.

In addition, it has been shown that it is advantageous if the vertical axes on the trailing device are mounted in front of a crossbar.

In addition, it is proposed that a further horizontal axis be provided on the arms at the end facing the trailing device. The trailing device can be tilted around this axis in order to create, for example, a different working depth for two rollers or harrows located in it running one after the other.

In connection with the provision of these axes, a rod is proposed, articulated between the towed device and the trailing device at its ends with two horizontal axes, the length of which can be varied by means of a spindle. This rod makes it possible to set a certain position of tilting around the horizontal axes located on the arms on the trailing device side.

Finally, it is proposed to provide a separate arm holder, to which an arm is attached so that it can pivot laterally, and which is attached to the towed device with another horizontal axis in such a way that the arm holder can be freely deflected upwards, but rests on the towed device downwards due to gravity. The aim of this proposal is to ensure that the trailing device can be lifted together with the first towed device, however

JAN G. TÖNNIES

but this cannot support itself on the trailing device.

The invention is explained in more detail below with reference to a drawing.

Fig. 1 the essential parts of the device ^using the example of an arm seen from above,

Fig. 2 the essential parts of the device using the example of an arm seen from the side,

Fig. 3 the linkage on the caster comes from the side and

Fig. 4 the linkage on the trailing device seen from above.

The device for pivotably fastening a trailing device to a towed device, in particular to a disc harrow, as shown schematically in its essential parts in Fig. 1 and 2, with its arms 10 connecting the trailing device to the towed device, preferably consists of two such arms 10, which are pivotably connected to the respective devices at both ends via a vertical axis 12, 14.

A vertically rotatable bushing 16 for inserting a straight rod is provided on the axle 12 on the towed first device.

By deflecting the rod sideways, it comes into contact with the angled arms, so that one arm 10 is pivoted and the entire trailing device is thus relatively

1900

JAN G. TONNIES

to the first towed device. Large forces occur, so that the leverage effect is very advantageous.

The arms can be locked in the positions between which they can be pivoted, each with a pin that runs through a hole in the arm as well as through holes 30, 32 in the element supporting it.

Fig. 3 and 4 show how the vertical axes 14 are attached to the trailing device in front of a crossbar 18.

At the end of the arms facing the trailing device, a hole 26 is provided for a further, horizontally running axis 22.

In conjunction with these axles 22, a rod (not shown) hinged between the towed device and the trailing device at its ends with two horizontal axes, the length of which can be varied by means of a spindle, ensures that the trailing device can be tilted. This is important, for example, for setting different working depths as well as for setting the working depth of the entire trailing device.

Furthermore, an arm holder 24 is shown in Fig. 1 and 2, to which an arm 10 is attached so that it can pivot laterally and which is attached to the towed device with a further horizontal axis 20 in such a way that the arm holder 24 can be freely deflected upwards, but rests on the towed device downwards due to gravity. This ensures that the trailing device can be moved together with the first towed device.

JAN G. TONNIES

The device can be lifted, but cannot support itself on the trailing device.

With the device described above, a trailing device can be easily swivelled directly behind the first towed device, so that the maximum possible working width can be selected for it, and yet it does not exceed the permissible width for road transport.

Claims (12)

JAN G. TÖNNIES B 5109 CLAIMS 1. Device for pivotally attaching a trailing device to a towed device, in particular to a disc harrow, with arms (10) connecting the trailing device to the towed device, characterized in that the arms (10) are pivotably connected to the respective devices at both ends via a vertical axis (12, 14), - in the area of a pivot point of the arms (10) on one of the two devices, a fastening for an actuating element, which can also be rotated about a vertical axis, is provided, and the fastening and the actuating element are shaped in such a way that the actuating element comes into contact with the arms (10) during a pivoting movement and pivots them sideways by lever force. 2. Device according to claim 1, characterized in that the fastening is located in the region of the articulation point of one of the arms (10) on the side of the towed device. JAN G. TONNIES 3. Device according to one of the preceding claims, characterized in that the actuating element is removable. 4. Device according to claim 1 or 2, characterized in that the actuating element is permanently connected to the fastening. 5. Device according to one of the preceding claims, characterized in that the fastening is a bushing (16). 6. Device according to one of the preceding claims, characterized in that the bushing is pivotally mounted on the same axis (12) as an arm (10). 7. Device according to one of the preceding claims, characterized in that the actuating element is a straight rod. 8. Device according to one of the preceding claims, characterized in that the arms can be locked in the positions between which they can be pivoted, each with a pin which runs through both the arm and the element supporting it. JAN G. TONNIES
- 3 - 9. Device according to one of the preceding claims, characterized in that the vertical axes (14) are mounted on the trailing device in front of a crossbar (18). 10. Device according to one of the preceding claims, characterized in that a further horizontal axis (22) is provided at the ends of the arms (10) facing the trailing device. 11. Device according to claim 10, characterized in that between the towed device and the trailing device there is a rod hinged at its ends with two horizontal axes, the length of which can be varied by means of a spindle. 12. Device according to one of the preceding claims, characterized by an arm holder (24) to which an arm (10) is attached so as to be laterally pivotable, and which is attached to the towed device with a further horizontal axis (20) in such a way that the arm holder (24) can be freely deflected upwards, but rests on the towed device downwards due to gravity.