DE1065649B - - Google Patents

Description

GERMAN

kl. 45c 67/00

INTERNAT. KL. AOld

PATENT OFFICE

REGISTRATION DAY:

NOTICE THE REGISTRATION AND ISSUE OF THE EDITORIAL:

M17228 III / 45 c

FEBRUARY 4, 1953 SEPTEMBER 17, 1959

The invention relates to a device for attaching a single-axle harvesting machine, in particular of a forage harvester, behind a tractor, in such a way that the harvester in the transport position in the tractor lane, in the working position on the other hand to the tractor lane runs, with two rigid tie rods, the ends of which are horizontally spaced from each other pivotally attached to the harvester and with their opposite ends in different Angles to each other are adjustable.

In the problem to hangende to a tractor harvesters, harvest wagon od. Like. Vorteilhaftesten account the respective requirements at the load-bearing position relative to the tractor "5 behind or to arrange next to this, has been already solved in various ways. Of particular importance here, however, is to make the arrangement so that at the same time z. B. a harvesting machine and a collection vehicle can be attached without ao that significant tensile forces act on the other vehicle, as this would make it extremely difficult, for example, the harvesting machine over the field. In addition, the attachment of a collection vehicle, for example, must not affect the setting of the harvesting machine. All these conditions are, however, only partially or only inadequately fulfilled by the devices known hitherto.

In general, the known hitching devices consist of a triangular boom, the rear end of which is attached to the support axis of the harvesting machine in two articulated connections arranged between the running wheels and the front end of which is connected to the tractor. In order to pivot the tie rods of the boom, which in a way forms a stiffened lattice frame, from one position to the other, a part of this frame is designed telescopically in a known embodiment in order to be able to make the necessary length adjustment. Attaching another unit to the harvesting machine, for example a collection truck, is not possible with a device designed in this way. Another known device has two inherently rigid tie rods of approximately the same length which engage the harvesting machine via joints. These tie rods engage a triangular frame of the machine which protrudes towards the tractor side and which in turn remains unchanged in the working position and in the transport position of the machine. The individual tie rods are then connected to the support frame in different positions by means of socket pins. Here, too, the attachment is a device for attaching a single-axle harvesting machine behind a tractor

Applicant:

Machine factory Fahr A. G., Gottmadingen (district of Konstanz)

hanging another unit on the harvesting machine is neither intended nor possible. The known Devices are extremely complicated in their construction and therefore versatile Use unsuitable.

The invention provides a device for attaching a harvesting machine and optionally also created a collection truck with a maximum of clarity due to its new design the construction as well as the simplicity of the handling with at the same time the greatest versatility of the Use in operation is achieved in an extremely advantageous manner.

According to the invention, these advantages are achieved in that the one pull rod of the device by means of a joint on the support axle of the harvesting machine between the running wheels and the other Tie rod by means of a joint on the end of this support shaft protruding beyond the one wheel arranged and that also the end piece of the pull rod protruding backwards over the latter joint is designed as a trailer link for a collection truck. The advantage of this device can be seen in that in the simplest way the connection of two one behind the other to be attached to a tractor Devices in different working positions to each other is possible without this being forces from the one affect the other device. The train connection of the collecting vehicle following the harvesting machine is rather, it is guided past the harvesting machine.

909 628/25

Claims (3)

It has proven to be expedient to design the device in such a way that the tie rods in the joints of the axis of the harvesting machine carrying them can also be pivoted vertically. In this way it is achieved that the two tie rods coupled to one another form rigid and vibration-free tension triangles lying approximately at the level of the support axis of the harvesting machine, these triangles representing a slide for a sliding bracket pivotably mounted on the machine frame, which is supported on the tie rods and by means of an on Machine frame mounted screw spindle allows pivoting of the machine frame about the support axis. In other words, this means that a gradual raising and lowering, for example when adjusting the harvesting machine, is possible regardless of the connection to the other units. Details of the invention emerge from the embodiment of the new towing device described below as an example and from the drawings. 1 shows a schematic representation in plan view of a tractor with an attached forage harvester in the transport position behind the tractor, FIG. 2 shows the forage harvester according to FIG Top view in the working position with a field wagon hung on the forage harvester, and FIG. 4 is a side view of the forage harvester in the working position. In FIG. 1, 1 denotes a tractor which is provided with a coupling device 2. Behind her in the direction of travel is a forage harvester 3, of which the supporting axle 4, the wheels 5, the frame 6 and the pick-up 7 are designated as essential parts. A long pull rod 9, which is connected to the tractor 1 by a hook eye 10, is attached to the support axle 4 eccentrically between the wheels 5 by means of a joint 8 permitting horizontal and vertical swiveling. The pull rod 9 has two lateral connection eyes 11 and 12, with which the front end of a shorter pull rod 13 can be optionally coupled * 5. The rod 13 is pivotally mounted in the fork 14 of an external stub axle 15 so that a free end 16 protrudes over the stub axle 15 to the rear and with a hook eye 17 forms a hitch for a vehicle to be attached. In FIG. 1, the front end of the rod 13 is connected to the connection eyelet 12. In this position, the rods 9 and 13 together with the support axle 4 form a rigid tension triangle in which the long rod 9 runs slightly inclined to the side towards the center of the tractor. During transport, the forage harvester is pulled behind the tractor in the direction of travel. During the transit, the sensor 7 is supported in the upright position by means of a bracket 18 on the two tie rods 9 and 13. In Fig. 2, this position of the pickup 7 can be seen during transport. At the front of the machine frame 6 is a screw spindle 20, held pivotably at 19, which can be created by means of the handwheel 21 '. The lower end of the screw spindle is connected by a joint 22 to an angled λόγ-standing leg 23 of the side parts 24 of the bracket 18, which is supported on the tie rods 9 and 13. In FIG. 2, the bracket 18 is erected so that the machine frame and the sensor 7 located thereon are raised above the height of the tie rods 9 and 13. Fig. 3 shows the tractor and the attached forage harvester in the working position. For this purpose, the front end of the rod 13 is detached from the connection eyelet 12 and connected to the connection eyelet 11 of the rod 9 after the forage harvester has been moved sideways. The rods 9 and 13 also in this position together with the support axle 4 form a rigid tension triangle, the tip of which, which is connected to the tractor, is now directed laterally outwards. In this position, the forage harvester is dragged laterally offset from the tractor by the train of the tractor and the guidance of the running wheels 5. In the drawing, the front part of a farm wagon 26 which is attached to the free end 16 of the shorter rod 13 by means of a drawbar 25 and which picks up the crop is indicated. Fig. 4 shows the position of the pickup 7 of the machine in the working position according to FIG. 3. To lower the pickup 7 to near the ground, the screw spindle 20 is rotated downwards. As a result, over the angle leg 23 of the bracket 18,24 between the tie rod 9 and the machine frame 6 is folded over to the bracket bearing 27 so that the machine frame and with it the transducer has lowered. The pull rod 9 is supported on the hitch 2 of the tractor by means of an angle piece 28 (FIGS. 2 and 4) in which the hanging loop 10 is located. The transition from the transport to the working position takes place in a simple manner in that the locking bolt 30 connecting the rods is released at 12 and the machine is simply pushed slightly to the right side. The front machine part slides by means of the bracket rail 18 on the tie rods 9 and 13 until the tie rod 13 can be locked with the connection eyelet 11. Any lifting of the machine is avoided. Claim f: First Device for attaching a single-axle harvesting machine, in particular a forage harvester, behind a tractor, namely in the transport position in the tractor lane, in the working position on the other hand to the tractor lane, with two rigid tie rods, the ends of which are horizontally pivoted at a distance from one another and attached to the harvesting machine and with their opposite ends are adjustable at different angles to each other, characterized in that one pull rod (9) by means of a joint (8) on the support axis (4) between the running wheels (5) and the other pull rod (13) by means of a joint (14 ) arranged on the end (15) of the support axle (4) protruding beyond the one wheel and that the end piece (16) of the pull rod (13) protruding backwards over the latter joint (14) is designed as a trailer link for a collection truck: 2. Apparatus according to claim 1, characterized in that the tie rods (9, 13) in the joints (8, 14) of the support axis (4) are also vertically pivotable. 3. Apparatus according to claim 2, characterized in that a preferably tubular sliding bracket (18) on the machine frame (6) of the harvesting machine is pivoted via the tie rods (9, 13) € 1,065 49 is mounted bar, which is supported on the tie rods (9, 13) and by means of a screw spindle (20) mounted on the machine frame (6 ) a pivoting of the machine frame (6) about the support axis (4) and consequently a stepless raising and lowering of the transducer (7) the harvest machine in the required working position. References considered: British Patent No. 674,106; U.S. Patent Nos. 2,332,006, 2,391,018. 1 sheet of drawings © 909 628/25 9.