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Planetary transmission

  • US 10,400,880 B2
  • Filed: 03/04/2016
  • Issued: 09/03/2019
  • Est. Priority Date: 04/17/2015
  • Status: Active Grant
First Claim
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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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