Planetary gearset

Abstract

A planetary gear set has a sun gear, multiple planetary gears mounted on a planetary carrier, and a ring gear enclosing the planetary gears, which is designed in split form perpendicular to its axis of rotation and is formed from two ring gear parts arranged coaxially to each other. An adapter component that, for the purpose of a torque-transferring or torque-supporting operative connection of the planetary carrier, is connected in a torque-proof manner to an additional component in a mounted state with the planetary carrier, and is guided, viewed radially, outward by the ring gear parts.

Claims

1. A planetary gear set, comprising: a sun gear; multiple planetary gears mounted on a planetary carrier; a ring gear enclosing the planetary gears, the ring gear designed in split form perpendicular to its axis of rotation and formed from two ring gear parts arranged coaxially to each other; an adapter component mounted to the planetary carrier and, for the purpose of a torque-transferring or torque-supporting operative connection of the planetary carrier, is engaged in a torque-proof manner to an additional component and is guided, viewed radially, outward by the ring gear parts; a torque-proof, positive-locking connection between the adapter component and the planetary carrier in a mounted state of the adapter component on the planetary carrier; and wherein the adapter component, in a mounted state with the planetary carrier, is connected to the planetary carrier by means of axially extended fingers, the fingers gripping between toothing arranged in the circumferential direction on the planetary carrier, between the planetary gears, wherein a torque-proof connection between the adapter component and the planetary carrier and centering of the adapter component are achieved.

2. The planetary gear set according to claim 1, wherein the adapter component is axially fixed by a retaining ring that is mounted in a groove in the planetary carrier and in the adapter component.

3. The planetary gear set according to claim 2, wherein an end of the adapter component turned away from the planetary carrier is configured to connect to a second additional component or a torque-transferring or torque-supporting operative connection between the planetary carrier and the additional component.

4. The planetary gear set according to claim 1, wherein the adapter component comprises a disk-shaped structural element that is guided, viewed radially, outward by the ring gear parts.

5. The planetary gear set according to claim 1, wherein the adapter component is designed in one piece with an L-shaped cross-section.

6. The planetary gear set according to claim 1, wherein the adapter component is connectable to or designed in one piece with the additional component.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following, the invention is more specifically illustrated as an example on the basis of the attached Figures. The following are shown in these:

(2) FIG. 1: a section view of a planetary gear set designed in accordance with the invention;

(3) FIG. 2: a view along the line A-A shown in FIG. 1; and

(4) FIG. 3: a view in the direction of the arrow B shown in FIG. 2.

DETAILED DESCRIPTION

(5) Reference will now be made to embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.

(6) FIG. 1 shows a planetary gear set 1, arranged in a housing 7, of a transmission in planetary design, which comprises a sun gear 2, multiple planetary gears 4 mounted on a planetary carrier 3, and a ring gear enclosing the planetary gears 4, whereas the ring gear is designed in split form perpendicular to its axis of rotation and is formed from a first ring gear part 5 and a second ring gear part 6, which are arranged coaxially to each other in a mounted state.

(7) As can be derived from FIG. 1, for the purpose of a torque-transferring or torque-supporting operative connection of the planetary carrier 3, an adapter component 8 is provided with an additional component, which, in the example shown, after the mounting of the second ring gear part 6, is axially slid on the planetary carrier 3 of the planetary gear set 1 up to a stop and thereby, by means of axially extending fingers, correspondingly grips on the planetary carrier 3 in the circumferential direction between the toothing brought into the planetary gears 4, by which, in a mounted state, a torque-proof connection between the adapter component 8 and the planetary carrier 3 is achieved.

(8) The toothing is shown in FIGS. 2 and 3 and is provided with the reference sign 9, whereas the fingers are provided with the reference sign 10. Preferably, the adapter component 8 is designed as finger-shaped only in the direction of the side turned toward the mounting, i.e, not locked in the circumferential direction, as illustrated on the basis of the figures; on the mounting side, the adapter component 8 is preferably designed to be locked in a circumferential direction.

(9) The axial fixing of the adapter component 8 is effected by means of a retaining ring 12 shown in FIGS. 1 and 3, which is mounted in a groove in the planetary carrier 3 and the adapter component 8. Thereby, in an advantageous manner, the planetary carrier 3 and the components connected to the planetary carrier 3, or to the adapter component 8, can also be axially fixed. In accordance with an additional form of the invention, the retaining ring 12 may also be designed to be conical, in order to prevent tolerance-related axial backlash. In addition, by means of the retaining ring 12, the axial fixing can take place in both directions, by which the necessity of mechanical stops is rendered inapplicable.

(10) In the example shown in FIGS. 1, 2 and 3, the adapter component 8 features a disk-shaped structural element 13 that is guided, viewed radially, outward by the ring gear parts 5, 6, with which it is connected, preferably welded, which features means for a connection with an additional component. With the example shown, the disk-shaped structural element 13 features recesses 11 running in an axial direction or toothing for a connection with an additional component, which in the present example is a shaft 14.

(11) Alternatively, the adapter component 8 may be designed in one piece and in a cross-section L-shape, whereas the end of the adapter component 8 turned away from the planetary carrier 3 in a mounted state features means for the connection with an additional component, in order to enable a torque-transferring or torque-supporting operative connection between the planetary carrier 3 and the additional component.

(12) The adapter component 8 may be connected on the mounting side to the additional components, or may be designed in one piece with this. With the example shown, and with reference to FIG. 1, an additional ring gear 15 of an additional planetary gear set of the transmission shown in planetary design is connected to the adapter component 8 on the mounting side, whereas the adapter component 8 and the additional ring gear 15 can be designed in one piece, by which a separate axial fixing for the additional ring gear 15 is advantageously rendered unnecessary.

(13) In accordance with the invention, the centering between the adapter component 8 and the planetary carrier 3 is effected by means of the operative connection between the toothing 9 of the planetary carrier 3 and the fingers 10 of the adapter component 8 in a mounted state. Through the centering that is thereby effected, additional components connected to the planetary carrier 3 or to the adapter component 8 can be centered.

(14) Modifications and variations can be made to the embodiments illustrated or described herein without departing from the scope and spirit of the invention as set forth in the appended claims.