| 摘要 |
<p>A tapered roller bearing (A, F, G, H) contains a sensing device (D) that radiates signals which reflect conditions within the bearing. In one embodiment (A), the outer race (24) is unitary and the sensing device (D) is wireless and self-powered and includes a mounting ring (60) that is fitted to the outer race between the raceways (32) along which the rollers roll. The ring has embedded within it several sensors (66) for monitoring bearing conditions such as temperature and vibrations. The ring also contains a radio transmitter (70), a microprocessor (68) to which the sensors are connected, and a power supply (64) for producing the electrical energy required to operate the processor and the transmitter. The electric power is generated by means of electromechanical energy conversion using permanent magnets, armature winding and a target wheel that is captured between and rotates with the two cones. The transmitter converts conditions registered by the sensors and processed by the processor into radio signals which are received externally from the bearing.</p> |
