DE6922273U - INTERMEDIATE COUPLING FOR AGRICULTURAL TRAILERS - Google Patents

Description

DR. FRITZ WALTER DIPL-INQ. ERNICKE PATENT LAWYERS

89 AUQSBVJRQ

Ulrichsplatz 12 Telephone 27815 and 2 8844

Date: June 3, 1959

Files: 330-211 ern / och

Company Alois Kober KG e, 8871 Grosskötz

Intermediate coupling for agricultural trailers

The invention relates to an intermediate coupling for agricultural use Trailer with an arrangement for fastening and height adjustment of an equipment carrier.

The conventional towing vehicles, especially tractors, v / iron an arrangement for attaching work equipment, which consists essentially of two lower links to which

Tclcgr .: Technikrat Augsburg - telephone calls require written confirmation - consultation time only by agreement Account 059113 Stadtsparkasse Augsburg - Account 1317 Fürst-Fugger-Bank Augsburg - Postsdiedckonto 96333 Munich

S t ü ; 21 89 AUQSBURQ
Ulrichsplatz 12
Telephone 27815 and 2 8844 Zv / ischenkupplung 22nd Date: June 3, 1969 Tractor coupling 23 Files: 330-211 / och trailer hitch 24 Towing eye c k 1 i s t e 25th "• iupplungsmaul 26th Lever arm i. trailer 27 joint tractor 28 Bearing shield. Middle piece 29 flange Device carrier part 30th drilling Guide pin 31 Long hole Sliding bearing 32 screw lower camp Housing shell upper camp Shank socket Lower link flange Ooerlenker flange 'Ay dr au 1 i k-Kurb e 1 Recess Paddock Equipment carrier Lever arm Lever arm Telegr .: Tcdinikrat Augsburg - telephone calls
Account 059113 Stadtsparkasse Augsburg - account 6922273 require written confirmation - consultation time only by agreement
1317 Fürst-Fugger-Bank Augsburg - Postscheckkonto 96333 Munich DR. FRITZ WALTER DIPL-INQ. SCORN PATENT LAWYERS 1 2 3 4th 5 e 7th 8th 9 10 11th 12th 1 ⁵ ; 14th 16 17th 18th 19th 20th

a coupling engages in an articulated manner, the height of which is adjustable by a hydraulically operated crank. If you want to hitch a trailer to a tractor equipped with an implement, for example to pick up the crop harvested by the implement at the same time, the problem arises that the tractor can only make a reduced cornering, because otherwise the implement is with it collided with the trailer. In order to remove dienes difficulty d "> e arrangement of an intermediate coupling is known, is connected by which the device carrier _v, and what the distance of the trailer increases from the tractor. From the arrangement of an intermediate coupling, however, results in a number of problems whose solution at the known Z-wisehenkupplung is not disclosed.

The innovation is therefore based on the task of an intermediate clutch structurally so that they not only have a larger steering angle of the towing vehicle when arranged Work device and coupled trailer allows, but also meets all the conditions that arise result from practical operation. For example, it is necessary to use the tractor hydraulics when driving on the road to relieve. When driving off-road, however, on the one hand the implement must be held in the desired working position and on the other hand, the fifth wheel load of the trailer can be absorbed without the holding elements are overloaded. Finally, it is necessary to make the intermediate coupling universal

to be designed in order to use them on tractors of different sizes
to be able to couple without significantly impairing the harvesting work.

This difficult problem is made clear by the subject matter of
New solution solved by the fact that the towing eye for
the tractor coupling and the coupling mouth for the trailer coupling carrying the central piece of the intermediate coupling
Device carrier part can be moved parallel to the longitudinal axis of the vehicle
is performed and on the device support part a deeper as well
a higher bearing for the articulated connection of the lower
and top link of the tractor hydraulics are arranged.

With this arrangement it is achieved that when driving on the road
The fifth wheel load of the trailer directly via the intermediate coupling | recorded by the tractor coupling and derived from the
Arrangement of the intermediate coupling resulting in an unstable position via the articulated connection of the device carrier part with the lower

i handlebars on the one hand and the top link on the other hand stabilized |

will. The fifth wheel load of the trailer is thus |

purely mechanical and without using the tractor hydraulics j

I added, the lower bearing of the device support part i

exerts a blocking effect because at this point the i

torque resulting from the fifth wheel load of the trailer

other direction than that from the arrangement of the lower link j

Has developing reaction torque. Simultaneously. :

but the problem of off-road driving is also solved, with!

which the coupling connection is released and the tensile force via>

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the upper and lower links as well as the intermediate coupling acts on the trailer. At the same time, the height of the intermediate coupling with the equipment rack attached is adjustable. So that the intermediate coupling cannot counteract this height adjustment in a blocking manner and, on the other hand, the height adjustment the device carrier can be done while maintaining its working position to the ground, the intermediate coupling is in a Central part and an equipment carrier part functionally separated, both of which have a relative movement extending in the direction of travel can perform to each other. In this way it is possible to use tools of any type and size to connect the intermediate coupling according to the innovation and the harvesting work without accepting impairments significantly to streamline.

In the context of refinements of the innovation, it is recommended that the upper bearing for the top link is cranked upwards To arrange the lever arm and rigidly connect this lever arm to the equipment rack "6eil. This arrangement is achieved the advantage of arranging the upper link almost parallel to the lower link and thus when adjusting the height of the Equipment carrier to ensure its constant position to the ground.

Furthermore, the innovation provides in the context of an exemplary embodiment that the upper link consists of two articulated with one another connected lever arms, the joint of which in the

desired angular position of the lever arms is plokbaren. The joint advantageously consists of an end face profiled tooth coupling, which is blocked, for example, by screwing. With this arrangement can Connect the new intermediate coupling to towing vehicles of any type. The position of the device carrier to the ground is brought about by the correct setting of the lockable joint by the angle between the two lever arms of the upper link is stretched or bent depending on the situation. As a joint is in the sense of innovation to understand the rotatable mounting of the two lever arms, the rotatability only for the purpose of adjusting the top link and thus the device carrier. When the setting is finished, the joint is locked so that the two lever arms form a rigid physical unit with one another.

In this context, the innovation provides in the context of an embodiment that the leading to the device support part The lever arm of the upper link is so cut off that he can connect the centrally arranged lockable joint with the laterally offset bearing of the device carrier part. This approval of the top link as well as the one already mentioned The lever arm of the device support part proves to be necessary in many cases because the Intermediate coupling must not hinder the passage of the PTO shaft from the tractor to the trailer and because

on the other hand, the middle piece of the intermediate coupling central spatial arrangement of the top link prevented. In those cases where these difficulties do not exist can of course be dispensed with the bending of the individual parts.

It has proven to be useful if the middle piece of the intermediate coupling is two arranged parallel to one another Has guide pins on which the device support part is displaceable. The device support part expediently has a sliding bearing provided with flanges, on each of whose flanges one connected to the actual device carrier Bearing shield can be fastened in different positions. It is recommended that the end shield with a variety to provide at least two elongated holes at the corresponding point of the boreholes and the flange. Also through these measures have the advantage that the arrangement of the intermediate coupling does not impair the guidance of the tapping groove and also the location of the actual equipment carrier the practical conditions, especially the to adapt to different tractor sizes. It also proves to be advantageous if the middle piece of the intermediate coupling has two housing shells welded together, between which two retaining bushes carrying the guide pins are welded as a spacer element. Through this Measure, the intermediate coupling receives a compact external appearance with the necessary strength, with the special

Advantage of cheap manufacturing is achieved. One becomes expedient place the retaining bushings firmly on the guide bolts, then slide the bearing shells over the guide bolts from both sides and then the retaining bushings with the Weld the bearing shells. This type of assembly has the advantage that the position of the guide pins is affected by the welding work cannot be affected. At the same time, the bearing shells are properly centered.

The middle piece, in particular its housing shells, is with provided a recess for the purpose of carrying out the PTO shaft leading to the trailer, the sliding bearings, flanges and The end shields are on both sides of the PTO shaft. You can thus intermediate couplings of the type according to the innovation without Consideration of the structural conditions of the trailers and towing vehicles on warehouse work and this through appropriate adjustment adapt to the circumstances.

It goes without saying that the innovation can be designed and changed in various ways. the

so
The innovation does not extend to the examples disclosed, but also includes the variants which appear to the person skilled in the art with knowledge of the disclosure according to the innovation.

Details of the invention are shown schematically and by way of example in the drawing. Show it:

Fig. 1-3! schematic representations of the innovation according to

Intermediate coupling in three different working positions,
Fig. 4-: · a side view, partly in section, of the intermediate coupling according to the invention in a structural embodiment uni

and ^{FIG. 6:} Top view and front view of the intermediate coupling according to FIG. 4.

In the example of Figures 1 to 3, the arrangement and design of an intermediate coupling (1) is shown in different positions, where Figure Ί the road trip division and Figures 2 and 3 show the position during off-road driving. In case of FIG. 2 shows the intermediate coupling with the device carrier (18) connected to it in a lower working position and in Figure 3 in a raised working position.

The intermediate coupling (1) is between the tractor coupling (2) and the trailer coupling (3) and thus extends the distance between the trailer (6) and the tractor (7), both of which are only shown schematically. For this purpose the towing eye (4-) of the intermediate coupling (1) with the tractor coupling (2) and the Eupplungsmaul (5) of the intermediate coupling (1) with the trailer coupling (3) in the usual way Way connected.

The intermediate coupling (1) consists essentially of the middle piece: (8) and the device support part (9), both of which

are displaceable relative to one another in the direction of travel, namely in that a guide pin on the middle piece (8) (10) is arranged on deoi the device support part (9) is longitudinally adjustable with the help of the sliding bearing (11). If only one guide pin (10) is provided, the device support part (9) must be secured against rotation so that the device carrier (18) attached to the device carrier part (9-) can always assume a parallel position to the ground.

There is a lower bearing on the device support part (9) (12) and an upper bearing (13) with the lower bearing (12) the lower link (14) is articulated to the upper bearing (13) of the upper link (15) of the tractor's hydraulic link. As The hydraulic crank (16) usually acts on the lower link (14) via a coupling (17). By pivoting the Crank (16) is thus brought about a height adjustment of the lower link (14) around its bearing.

On the device support part (9) there is an upwardly extending one Lever arm (19)? at its upper end the upper one Bearing (13) is arranged. The upper link (15) is designed in two parts and consists of the two lever arms (20) (21), which are connected to one another via a lockable joint (22). This joint (22) has the task of adjusting the angle of the two To make lever type (20, 21) variable. If the angle is stretched, the distance of the is increased upper bearing (13) from the pivot bearing of the lever arm (20). This has a rotation of the device carrier (18) around the lower bearing (12)

Consequence. Reduced to _m -en angle between the lever arms (20, 21), then the distance of the upper laying machine (13) is shortened by pivoting loader ies Hebelarr.es (20). The purpose of this measure is to adapt the upper link (15) to towing vehicles of different sizes without significantly changing the relative position of the two links (14, 15). Essentially, it is important to have the upper bearing (1?) Opposite to keep the pivot bearing of the lever arm (20) in the desired position.

The function of the intermediate coupling (1) shown in FIGS. 1 to 3 in different working positions is as follows:

In the example of Figure 1 there is the intermediate coupling (1) in the so-called driving position. The zxis is (4) hooked into the tractor coupling (2) and the coupling jaw (5) in the trailer coupling (3). Thus the tensile force of the Transfer the tractor (7) to the trailer (6) via the couplings (1, 2 and 3). The arrangement of the intermediate coupling (1) However, there is a risk of buckling due to the fifth wheel load of the trailer. To avoid this buckling, the Intermediate coupling (1) via the device support part (9) and the lower bearing (12) on the lower link (14). The lower camp (12) thus becomes two different pivoting movement tendencies exposed, namely on the one hand to the pivot bearing of the lower link (14) and on the other hand to the tractor coupling (2). Since both apparent pivot bearings have a different position, the device support part (9) is locked in the lower bearing (12) so that the device support part (9)

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acting forces become noticeable as compressive forces in the lower link. The lower link (14) or whose pivot position depends on the fifth wheel load of the trailer. The tractor hydraulics (16, 17) have no function here, see above that it is not stressed while driving on the road.

In the examples of Figures 2 and 5, the position is Z-wiper clutch (1) shown during off-road driving. In both cases, the intermediate coupling (1) is disengaged with the tractor coupling (2). The fifth wheel load of the trailer (6) thus leads to a vertical tilting movement the intermediate coupling (1). This tilting movement is now absorbed by the activated hydraulic system (16, 17), which supports the lower link (14). In the example of FIG. 2, the equipment rack (18) is in a lower working position. This is achieved in that the crank (16) is pivoted downwards in a clockwise direction will. The top link (15) follows this movement, with the device support part (9) resting on the guide pin (10) moved forward until it comes to a stop with the middle piece (ö) of the intermediate coupling (1). Through this arrangement the position of the device carrier (18) is maintained as with a parallel link gear. Since the top link (15) and the lower link (14) are not exactly parallel to each other, should actually block the lowering and lifting movement take place, which, however, due to the relative displaceability of the middle piece (1) and device support part (9) over-

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is bridged. The drag force of the tractor is hereby controlled by the Upper and lower links (15, 14 ·) are transferred to the device support part (9), which in turn transfers the force via the guide pins (10) on the middle piece (8) of the intermediate coupling (1). In Figures 2 and 3 is a stop position of the middle piece (8) and the device support part (9) shown.

In the example in FIG. 3, the equipment rack is located (18) in a raised position, which is created by pivoting the crank (16) counterclockwise upwards. This pivoting movement is followed by the two links (14-, 15), with the pulling force acting on the trailer in the same way, as has been shown for FIG. The fifth wheel load is in turn absorbed by the tractor hydraulic system (16, 1?).

In the examples of Figures 4-6, the intermediate coupling is

(I) shown in an appropriate structural design. It can be seen that the device support part has two bearing plates (23) which are connected to the sliding bearings (11) via the flanges (24-) are firmly connected. There are several rows of bores (25) in the end shields (23), while the flanges (24-) are connected to corresponding ones Point has elongated holes (26). This makes it possible to use the end shields (23) and the sliding bearings

(II) to be adjusted relative to each other and with screws (2?) to be firmly connected to each other. This measure is used for adaptation

of the device carrier (18) on towing vehicles of different sizes.

The middle piece (8) of the intermediate coupling (1) has two housing shells (28) which are welded to one another. The guide pins (10) are connected at one end to retaining bushings (29) which, for example, can be shrunk or welded on. The bearing shells (28) have holes corresponding to the guide pins (10). During assembly, the housing shells (28) can be pushed onto the guide pins (1o) from both sides and moved against each other as far as the stop on the holding sleeves (29). This turns the retaining sleeve (29) into a spacer element. Their welding to the housing shells (28) also protects the guide pins (10), which thus have a constant position for guiding the sliding bearings (11).

The equipment carrier (18) is attached to the end shields (25) with the aid of a flange (50). The lower camp too (12) has a corresponding flange (51) for attachment to the end shields (25) so that the lower link (14) can be arranged in an articulated manner on the end shields (23) in a suitable manner.

As FIG. 6 also shows, the housing shells (26) have a recess (32) through which the power take-off shaft, not shown, of the tractor can be passed. One recognises"

also that the end shields (23) extend laterally from the position of the power take-off shaft and that the guide bolts (10) are also located to the side of the recess (32). The function of the intermediate coupling (1) is impaired thus not the guidance of the PTO shaft of the towing vehicle, so that despite the intermediate coupling, the implements of the trailer can be driven properly.

Protection claims:

69 2 2 2?

Claims (10)

1.) Intermediate coupling for agricultural trailers, with an arrangement for fastening and height adjustment of an equipment carrier, characterized in that that on one the towing eye (4) for the tractor coupling (2) and the coupling jaw (5) for the trailer coupling (3) supporting middle piece (8) of the intermediate coupling (1) an equipment carrier part (9) displaceable parallel to the longitudinal axis of the vehicle is performed and on the device support part (9) a lower and a higher bearing (12, 13) for articulated connection of the lower and upper links (14, 15) of the tractor hydraulics are arranged. 2.) Intermediate coupling according to claim 1, characterized in that the upper bearing (13) for the upper link (15) arranged on a lever arm (19) that is capped upwards, and this lever arm is rigidly connected to the device support part (9) connected is. - II - 6C22273 Tclegr .: Technician Augsburg - Telephone calls require written confirmation - Consultation time only by agreement Account 059113 Stadisparkasse Augsburg - Account 1317 Fürst-Fugger-Bank Augsburg - Postscheckkonto 96333 Munich - II - 3.) Intermediate coupling according to claim 1, characterized in that the upper link (15) from two articulated lever arms (20, 21), the joint (22) of which in the desired Angular position of the lever arms (20, 21) can be blocked. 4 ·.) Intermediate coupling according to claim 3, characterized in that the joint (22) from there is a toothed coupling profiled at the end, which can be blocked, for example, by screwing he follows. 5.) Intermediate coupling according to claim 1 or the following, characterized in that the device support part (9) leading lever arm (21) of the upper link (15) is bent so that it is the centrally arranged lockable Joint (22) can connect to the laterally offset bearing (13) of the device support part (9). 6.) Intermediate coupling according to claim 1 or one of the following, characterized in that the middle piece (8) of the intermediate coupling (1) has two guide pins (10) arranged parallel to one another, on which the Device support part (9) is displaceable. - III - 60222 * 3 - Ill - 7.) Intermediate coupling according to claim 1, or one of the following, characterized in that the device support part (9) has a sliding bearing (11) provided with flanges (24-), on each of whose flanges (24) one with the actual Equipment carrier (18) connected end shield (23) can be fastened in different positions. 8.) Intermediate coupling according to claim 7, characterized in that the end shield ($ 2) has a plurality of bores (25) and the flange (24) has at least two elongated holes at the corresponding point. 9 ·) Intermediate coupling according to claim 1, or one of the following, characterized in that the middle piece (8) of the intermediate coupling (1) has two housing shells welded to one another (28), between the two retaining bushings (29) carrying the guide pins (10) at the same time as a spacer element are welded. 10.) intermediate coupling according to claim 1 or one of the following, characterized in that the middle piece (8), in particular its housing shells (28) with a recess (32) for the purpose of carrying out the PTO shaft leading to the trailer and that the sliding bearings, flanges and end shields are located on both sides of the PTO shaft. Dr. F. Walter and Dipl.-In ^. Ernicke patent attorneys 6C22273