DE3001484B1

DE3001484B1 - Universal joint gear

Info

Publication number: DE3001484B1
Application number: DE19803001484
Authority: DE
Inventors: Ing.(grad.) Hubert 5204 Lohmar Geisthoff
Original assignee: GKN Walterscheid GmbH; Jean Walterscheid GmbH
Current assignee: Walterscheid GmbH; Jean Walterscheid GmbH
Priority date: 1980-01-17
Filing date: 1980-01-17
Publication date: 1981-07-30
Also published as: DE3001484C2

Description

Einstückig oder drehfest mit der Schwinge 3, 3' ist ein Zahnsegment 15 verbunden. Das Zahnsegment 15 kämmt mit einem weiteren Zahnsegment 16 im Bereich One piece or non-rotatably with the rocker 3, 3 'is a toothed segment 15 connected. The tooth segment 15 meshes with a further tooth segment 16 in the area

der beiden zugeordneten Verzahnungen 14, wobei das Zahnsegment 16 über die einander gegenüberliegenden Drehpunkte 18 am anderen Ende der Koppel 5 gelagert ist. Fest mit dem Zahnsegment 16 ist ein Führungsring 7 verbunden, auf dem die Schwinge 10, 10' in zwei axial gegenüberliegenden Drehpunkten 8 gelagert ist. Die Achse der Drehpunkte 18 steht dabei senkrecht auf der Achse der Drehpunkte 8. An ihrem freien Ende ist die Schwinge 10, 10' mit dem äußeren Lagerring 21 des Lagers 17 verbunden, in dem der zweite Gelenkgabelschaft 20 der äußeren Gelenkgabel 9 drehbar gehalten ist.of the two associated toothings 14, the tooth segment 16 Via the mutually opposite pivot points 18 at the other end of the coupling 5 is stored. A guide ring 7 is fixedly connected to the toothed segment 16 which the rocker 10, 10 'is mounted in two axially opposite pivot points 8 is. The axis of the pivot points 18 is perpendicular to the axis of the pivot points 8. At its free end, the rocker 10, 10 'with the outer bearing ring 21 of the Bearing 17 connected in which the second joint fork shaft 20 of the outer joint fork 9 is rotatably held.

Das Kreuzgelenkgetriebe kann in der Bildebene der Fig.2 unter Abwälzen der Zahnsegmente 15 und 16 aufeinander einen Beugewinkel von über 90" überstreichen. Bei einer Beugung nur in der Bildebene der Fig. 2 verhält sich das Kreuzgelenkgetriebe wie ein homokinetisches Gelenk, d. h., die Winkelgeschwindigkeiten des Antriebes und des Abtriebes sind stets gleich. In der in der F i g. 1 entsprechenden Bildebene kann das dem Führungsring 7 zugeordnete Teilgelenk einen Beugewinkel von etwa 45" unter Drehmomentbeaufschlagung überstreichen. Bei einer Beugung in der Bildebene der Fig. 1 verliert das Kreuzgelenkgetriebe jedoch seinen homokinetischen Charakter, d. h. es wird sich zwischen Antrieb und Abtrieb ein gewisser winkelabhängiger Ungleichförmigkeitsgrad einstellen, wie er vom Einsatz eines Einzelkreuzgelenkes her bekannt ist. The universal joint transmission can in the plane of Figure 2 under rolling of the toothed segments 15 and 16 sweep over a flexion angle of over 90 "on top of one another. The universal joint mechanism behaves when it is only bent in the plane of the drawing in FIG. 2 like a constant velocity joint, d. i.e. the angular speeds of the drive and the downforce are always the same. In the FIG. 1 corresponding image plane the partial joint assigned to the guide ring 7 can have a flexion angle of about 45 " paint over with application of torque. With diffraction in the image plane In Fig. 1, however, the universal joint gear loses its homokinetic character, d. H. there will be a certain angle-dependent degree of irregularity between drive and output set as it is known from the use of a single universal joint.

Zur Eigenstabilisierung wird der Steuerkörper über mindestens eine der Schwingen 3, 3' oder 10, 10' oder ein fest hiermit verbundenes Teil ortsfest abgestützt (nicht dargestellt). For self-stabilization, the control body is via at least one of the rockers 3, 3 'or 10, 10' or a part firmly connected therewith in a stationary manner supported (not shown).

Eine vorteilhafte Aufbaumöglichkeit für das beschriebene Kreuzgelenkgetriebe zur Übertragung eines Drehmomentes von einem Schlepper auf ein landwirtschaftliches Anbau- oder Anhängegerät liegt darin, daß der Steuerkörper derart mit z. B. der Zugdeichsel zwischen Schlepper und Anhängegerät verbunden ist, daß die von den Zahnsegmenten 15, 16 vorgegebene Hauptbeugeebene in der Horizontalebene liegt. Hierdurch wird beim Wenden bzw. bei Kurvenfahrten des Schleppzuges eine starke Abwinklung des Kreuzgelenkgetriebes unter homokinetischen Bewegungsverhältnissen ermöglicht, darüber hinaus können jedoch Beugungen in die Vertikalebene des Schleppers, die sich aus dem Befahren unebenen Geländes ergeben, und die erfahrungsgemäß kleinere Beugewinkel aufweisen, in der der F i g. 1 entsprechenden Bildebene ermöglicht werden. An advantageous construction option for the universal joint gear described for the transmission of torque from a tractor to an agricultural one Attachment or trailer device is that the control body so with z. B. the The drawbar between the tractor and the trailer device is connected to that of the toothed segments 15, 16 predetermined main bending plane lies in the horizontal plane. This will when turning or cornering the tow tractor, there is a strong bending of the universal joint drive under homokinetic movement conditions enabled, but beyond that Inflections in the vertical plane of the tractor resulting from driving on uneven terrain Terrain result, and experience has shown that they have smaller angles of articulation in the the F i g. 1 corresponding image plane can be made possible.

Claims

Claim: Universal joint gear for transmitting a torque from an agricultural tractor to an agricultural attachment or trailer device, consisting of two universal joints connected by an inner double fork and an external control body and one each on the associated one Articulated fork shaft mounted swing arm, the two swing arms with at least a pair of toothed segments that mesh with one another and are mounted on a common coupling are connected, characterized in that a) the one tooth segment (16) is rotatably connected to a guide ring (7), b) on the guide ring (7) one perpendicular to the axis of the pivot points (18) of the one tooth segment (16) Axis the assigned rocker (10, 10 ') is mounted in the pivot points (8), c) the rocker (10, 10 ') with its free end on the associated joint fork shaft (20) is mounted and d) one of the two rockers (3, 3 'or 10, 10') is stationary is supported.

The invention relates to a universal joint gear for transmitting a Torque from an agricultural tractor to an agricultural attachment or trailer device, consisting of two universal joints connected by an inner double fork and an external control body and one each on the associated one Articulated fork shaft mounted swing arm, the two swing arms with at least a pair of toothed segments that mesh with one another and are mounted on a common coupling are connected.

Universal joint gear with one of two meshing tooth segments existing external controls are known (DE-AS 2644 671). The interpretative document describes a universal joint gear that only works in one plane, namely the swivel plane of the tooth segment pairs, is pivotable, and that by means of a spring in a preferred manner Angle to the footprint of the tractor is kept that a flexion in one perpendicular to the pivot plane plane is unlikely.

In this known embodiment, however, there is a risk that at Cornering, in which the swivel plane against the force of the preferred position holding spring swivels into the horizontal plane, while driving on at the same time uneven terrain set a flexion in the vertical plane above the dead center can, causing damage to the joint or at least the cardan shaft can be.

In another known universal joint gear (DE-PS 9 48 568) the external control consists of two spherical housing parts that are concentric interlock and pivot about a common fixed center point are. The disadvantage of the embodiment described, however, is that the machining of the spherical surfaces sliding into one another is extremely complex, on the other hand the spherical design of the guide shell takes up a large amount of space. Furthermore it is disadvantageous in the described joint that only one in the preferred plane A maximum flexion angle of 80 "can be achieved.

This angle of 80 "is sufficient for the types of attachment that are common today between an agricultural tractor and an implement to be attached more, since bending angles greater than 80 "can occur here.

The invention is based on the object of an externally controlled universal joint transmission to create that in a preferred plane while maintaining the homokinetic rotary motion Allows flexion angles greater than 90D, with the addition of one of the universal joints in a further plane perpendicular to the plane of the preferred plane via a limited flexion angle while renouncing a completely homokinetic sequence of movements should be freely pivotable.

According to the invention this object is achieved in that a) the one Toothed segment is rotatably connected to a guide ring, b) on the guide ring on an axis perpendicular to the axis of the pivot points of the one tooth segment the assigned rocker is mounted in the pivot points d) the rocker with its free end is mounted on the associated joint fork shaft and d) one of the both rockers is supported in a stationary manner.

The inventive design of the universal joint gear achieves that limited flexion angle also in a plane perpendicular to the preferred plane Level are possible. This can destroy the joint or the cardan shaft be avoided.

In addition, the universal joint transmission according to the invention can relatively can be manufactured inexpensively, being spherical compared to one of two Universal joint gears built on housing parts, to high demands on the machining accuracy can largely be dispensed with.

If the forces to be absorbed by the control are exceptional Assume high values, these can be combined without increasing the dimensions to two meshing tooth segment pairs are distributed.

An embodiment according to the invention is based on one in the Drawing illustrated embodiment explained in more detail. It shows F i g. 1 a universal joint gear with a partially sectioned side view of the control body, F i g. 2 is a plan view of the control body.

The in the F i g. 1 shown universal joint gear consists of an inner double fork 6, the fork ends each via joint crosses 4 with the outer joint forks 2.9 are connected.

The control body consists of a coupling 5, at one end two axially opposite pivot points 13 are provided in which the rocker 3, 3 'is stored. At its free end is the rocker 3, 3 'with the outer one Bearing ring 1 of the bearing 12 connected. In the bearing 12 of the joint fork shaft 19 is the Articulated fork 2 held rotatably.