PLANETARY GEAR STAGE WITH PLAIN BEARINGS AS PLANET BEARINGS AND USE THEREOF
1 Assignment
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Accused Products
Abstract
A planetary gear stage for a gearbox has a ring gear, a sun gear and a planet carrier for driving planet shafts. Each planet shaft has a planet gear with radial and axial contact surfaces and which is rotatably supported by a plain bearing arrangement. The bearing arrangement has two bushings fixed to the planet shaft. Each bushing is L-shaped in cross-section and has radial and axial contact surfaces. The bushings form a cross-sectional U-shape and are axially locked by abutments. At least part of the planet gear is located within the U-shape formed by the bushings. The plain bearing arrangement has a radial sliding support arranged between the radial contact surface of the bushings and the radial contact surface of the planet gear and an axial sliding support arranged between the axial contact surface of the bushings and the axial contact surface of the planet gears.
5 Citations
46 Claims
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1-23. -23. (canceled)
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24. A planetary gear stage (2) for a gearbox (1), the planetary gear stage (2) comprising:
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a ring gear (8), a sun gear (9) and a planet carrier (4) for driving at least three planet shafts (6), at least one planet gear (5) is rotatably mounted on the at least three planet shaft by a plain bearing arrangement (7), and each of the planet gears (5) having a radial contact surface (18) and an axial contact surface (20), each of the plain bearing arrangements (7) comprising; two bushings (12) fixedly connected to the planet shaft (6), each of the two fixed bushings (12) being L-shaped in cross-section and having a radial contact surface (13) and an axial contact surface (14), the fixed L-shaped bushings (12) being mounted to form a cross-sectional U-shape and being locked in an axial direction at both outer sides by an abutment (15, 16, 24), and at least part of the planet gear (5) is located within the U-shape formed by the fixed L-shaped bushings (12), a radial sliding support (17) arranged in between the radial contact surface (13) of the fixed L-shaped bushings (12) and the radial contact surface (18) of the planet gear (5), and an axial sliding support (19) arranged in between the axial contact surface (14) of the fixed L-shaped bushings (12) and the axial contact surface (20) of the planet gears (5). - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification