DE8513367U1 - Epicyclic gears - Google Patents

Description

Dipl.-Ing. Dipl.-Oek. Niemannsweg JAIf G. TÖ N H I E S 2300 KIEL

Attorney and patent attorney Tel. 0431/84075

To the

German Patent Office

Zweibrück & nstr. 12th

8000 Munich 2

New registration K 5059 Kiel, May 6th

Helmut Krueger-Beuster
Robert-Schade-Str. 10, 2420 Eutin

Epicyclic gears

The invention relates to a Uralaufrädergetriebe with a central sun gear, a look at this concentric \ ring gear and a plurality of on a concen-

Ii trically mounted, circumferential web in the space between

I φ see sun gear and ring gear guided planet gears.

;: Such, in their basic form as a planetary gear

; designated epicyclic gears result in a favorable Ver ^

I relationship between construction volume and transferable capacity

I with a relatively large possible gear ratio and

; Coaxial input and output without reversing the direction of rotation.

I Since in the known planetary gears the planetary gears

with both the external teeth of the sun gear as

932

ItIl lilt · · · · *

i I I

i ι ι * ·

are also in direct engagement with the internal teeth of the ring gear, the design must _{meet the condition D H} a Dg + 2 Dp, where D _{H is} the diameter of the pitch circle of the ring gear, D _{F is} the diameter of the pitch circle of the sun gear and Dp is the diameter of the pitch circle of the Indicating planet gears.

The invention is based on the object of creating an epicyclic gear transmission which satisfies this condition free is.

According to the invention, this Auigabe is achieved by a a connection between the sun gear, the planet gears and the ring gear producing chain through a gap between the planetary gears and the ring gear extends on part of the circumferential surface of the sun gear is guided in a supporting manner, the sun gear and the planetary gears being arranged so as to overlap one another.

The overlapping of the gears can be effected in that the planet gears have an H-shaped cross section have, wherein the sun gear extends into the space between the two planes of the planetary gears.

Further features and advantages of the invention emerge from the description in which an exemplary embodiment the invention is explained with reference to a drawing. The single figure shows a schematic View of the planetary gear transmission according to the invention.

This consists of a fixed sun gear 10 provided with external teeth, one concentric with this, provided with an internal toothing ring gear 14 and

several (two in the illustration) rotatably guided on a - not shown - revolving web, with a planetary gears 12 provided with teeth. A chain 16 is connected by a chain between the planetary gears 12 and the ring gear 14 remaining gap and is supported on part of the circumference of the sun gear

For optimal use of the space within the ring gear 1 0, the planetary gears 1 2 have an H-shape Cross-section on. The circumference of the sun gear 10 extends while between the planes of the planetary gears 12, whereby constructions are possible in which the The diameter of the sun gear is larger than in the known designs.

When the web carrying the planetary gears is driven, the planetary gears 12 rotate about their central axis and transmit a torque to the ring gear 14, the Counter-torque is transmitted via the chain 16 to the stationary sun gear.

In the proposed Ural impeller transmission, the transmission ratio results with i = njj / (n _H − n _K ), where n _{H is} the number of teeth of the toothing of the ring gear and n _{K is} the number of chain links of the chain 16.

The chain is preferably designed with four plate levels, Include the three levels of bolts, with the outer levels having an H-shaped cross-section having planetary gears (12) interact and the middle plane with the sun gear 10.

Claims (2)

• · · mam K 5059 CLAIMS 1. Epicyclic gear with a central sun gear (10), one to this concentric ring gear (14) and Plurality of on a concentrically mounted, circumferential web in the space between the sun gear and ring gear guided planet gears, characterized by a connection between the sun gear (10), the planet gears (12) and the ring gear (14) producing Chain (16) passing through a gap between the planet wheels 02) and the ring gear (14) are guided in a supporting manner on part of the circumference of the sun gear (10) is, whereby the sun gear (10) and the planetary gears (12) are arranged overlapping one another. 2. UmlaufrädergetEiebe according to claim 1 _f ", characterized in that the planet gears have an H-shaped cross section, the sun gear (10) extending into the space between the two planes of the planet gears (12). II! · I H Il ι I I ■ I I I I