DE1755592A1 - PTO drive device for agricultural machinery - Google Patents

Description

PTO drive device for agricultural machinery «

The invention relates to a power take-off drive device for agricultural machinery with an implement guided by a tractor to an implement connected and driven with the same Shaft strand ^ from at least two shaft parts, which are connected to each other by a universal joint. The known such PTO drive devices have the disadvantage that on the one hand the possible angle of deflection between the two shaft parts is so small that that which occurs in practical farming operations Pivoting the shaft parts to each other can damage the PTO drive device. On the other hand undesirable irregularities occur with increasing diffraction angle in the angular velocity between the two parts of the shaft, which leads to damaging impacts and torsional vibrations the drive device.

The invention has the object of avoiding these disadvantages, the power take-off drive device being designed to be as space-saving as possible should be and with consideration of manufacturing costs and maintenance must be simple in construction.

According to the invention are in a power take-off drive device For agricultural machinery of the type mentioned at the beginning, the legs of the forks connected to the WelXenenden & articulated forks, as known at sioh, connected at their outer end by a web, which carries a ball stud, and these ball studs are in an ee atüok axially displaceably mounted in a one-piece connector is radially displaceable, which Aie with the Geltnkgabtln with inner joint forks working together connects.

In a preferred embodiment of the invention, one becomes off

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one-piece inner double fork used with a ' radially arranged breakthrough in a rectangular shape in which a rightok-shaped slider is slidably mounted, which with a cylindrical transverse bore arranged perpendicular to the opening for guiding the fastened to the outer joint forks » ten ball stud is provided ο

The power take-off drive device for agricultural machinery according to the invention allows deflection angles of up to almost 80 ° between the shaft ends, with a uniform angle at all deflection angles Transmission of the angular speed between the shaft ends is guaranteed. The space requirement is small, so that the Power take-off drive device without difficulty in place of the previous inadequate drive devices use Can be found. In spite of the great advantages described, the drive device is simple in its construction and therefore with at low cost and easy to monitor and maintain. .

In the drawings is an embodiment of the invention shown.

1 shows the connection of two shaft parts from the shaft train of the power take-off drive device in the bent state partially cut in side view.

Figure 2 shows the same joint in the flexed state, however after a turn de? Drive shafts by 9o °

The two shaft ends 1,9 of the PTO drive device carry the usual articulated forks with Oejleakkreueen 8. The legs of the forks are connected at their outer ends by crossbars 2, weloat J & igelsapfea 18 tinting ** $ ** ** · GelenKkreuij · 8 the joint forks 1,9 connected «it 4en eef. inner joint forks, which are connected to one another by a connecting piece 13. The latter has a radially arranged Duroh-

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break in a rectangular shape in which a slider 14 slidable is stored. The slider 14 has an axially arranged cylindrical bore 17 in which the ball studs 12 engage.

When rotating the shaft ends of the PTO drive device the inner joint forks are inevitably guided by the slider 14 over the ball studs 12 so that a uniform transmission of the angular velocity from one shaft end to the other is assured. Here the slide Ball stud 12 in the bore 17 of the slider 14, while the latter at the same time injdem the radial Durchbruoh Connector 13 slides back and forth. As a result of the simple structure of the connection between the shaft ends 1, 9 and the lubricating device 16 is guaranteed to function reliably and has a long service life. The few individual parts are easy to manufacture and can be easily replaced if necessary.

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Claims (1)

Patent Claims. 1.) PTO drive device for agricultural machinery with one of a tractor to a driven work device connected to the same and guided from at least 2 Shaft parts which are connected to one another by a universal joint, characterized in that the legs of the with the shaft ends connected joint forks (1,9), as known per se, are connected at their outer end by a web (2), which carries a ball stud (12), and that this ball stud is mounted axially displaceably in a slider (H) are, which is radially displaceable in a one-piece connecting piece (13), which is connected to the joint forks (1,9) of the shaft ends cooperating inner joint forks. 2o) PTO drive device according to claim 1, characterized by the use of a one-piece inner double fork (13) with a radially arranged opening in a rectangular shape in which a rectangular slider (H) is slidably mounted, which is mounted with a cylindrical slider perpendicular to the Durohbruch Transverse bore (17) is provided for guiding the ball pegs (12) attached to the outer joint forks (1,9). 109835/0464 Blank page