Planetary transmission
First Claim
1. A planetary transmission, comprising:
- a housing;
a planetary stage including a sun gear shaft rotatably mounted on the housing, a sun gear operably connected to the sun gear shaft, a planet gear carrier rotatably mounted on the housing, at least two planet gear pins fastened to the planet gear carrier, planet gears rotatably held on the planet gear pins, respectively, and a ring gear fastened non-rotationally within the housing and having an internal toothing, said ring gear being in engagement with the planet gears; and
a FOFW system including an interrogation unit, a locally fixed antenna electrically connected to the interrogation unit and arranged within the housing, a plurality of FOFW sensors fastened to the planet gear pins such that at least two of the FOFW sensors are fastened to each of the planet gear pins, and a plurality of co-rotating antennae fastened to the planet gear carrier at a number corresponding to a number of the planet gear pins, said co-rotating antennae each being electrically connected to at least one of the FOFW sensors and arranged and configured such as to transfer measurement data detected by the FOFW sensors to the locally fixed antenna.
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Accused Products
Abstract
A planetary transmission includes a planetary stage and a FOFW system having an interrogation unit, a locally fixed antenna electrically connected to the interrogation unit and arranged within a housing of the planetary stage, and a plurality of FOFW sensors fastened to planet gear pins of the planetary stage such that at least two of the FOFW sensors are fastened to each of the planet gear pins. A plurality of co-rotating antennae are fastened to the planet gear carrier at a number corresponding to a number of the planet gear pins. The co-rotating antennae are each electrically connected to at least one of the FOFW sensors and arranged and configured such as to transfer measurement data detected by the FOFW sensors to the locally fixed antenna.
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Citations
15 Claims
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1. A planetary transmission, comprising:
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a housing; a planetary stage including a sun gear shaft rotatably mounted on the housing, a sun gear operably connected to the sun gear shaft, a planet gear carrier rotatably mounted on the housing, at least two planet gear pins fastened to the planet gear carrier, planet gears rotatably held on the planet gear pins, respectively, and a ring gear fastened non-rotationally within the housing and having an internal toothing, said ring gear being in engagement with the planet gears; and a FOFW system including an interrogation unit, a locally fixed antenna electrically connected to the interrogation unit and arranged within the housing, a plurality of FOFW sensors fastened to the planet gear pins such that at least two of the FOFW sensors are fastened to each of the planet gear pins, and a plurality of co-rotating antennae fastened to the planet gear carrier at a number corresponding to a number of the planet gear pins, said co-rotating antennae each being electrically connected to at least one of the FOFW sensors and arranged and configured such as to transfer measurement data detected by the FOFW sensors to the locally fixed antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A FOFW system, comprising:
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an interrogation unit; a locally fixed antenna electrically connected to the interrogation unit; a FOFW sensor configured to detect measurement data; a rotating antenna electrically connected to FOFW sensor for transfer of the measurement data to the interrogation unit via the locally fixed antenna and the rotating antenna, and an evaluation unit linked by data connection to the interrogation unit and configured to carry out calculations on the basis of the measurement data detected by the FOFW sensors to indicate a remaining service life of planet gear pins and/or of the planet gears and/or of a planet gear carrier of a planetary transmission.
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Specification