JP2012010245A5 - - Google Patents

Description

According to such a configuration, the first rotating shaft body and the second rotating shaft body are not in a relationship in which one is rotated by the other. For this reason, it is not necessary to rotate the driving source for driving the first rotating shaft body and the second rotating shaft body around the first central axis. As a result, it is possible to reduce the size and improve the operation accuracy.

The power feeding shaft 3 is used for feeding power to the feed 22 and is inserted into the inner cylindrical shaft 4. In the present embodiment, the power feeding shaft 3 rotates around the azimuth axis Oy together with the outer cylinder shaft 5. A slip ring 31 as a rotary connector is provided at the lower end of the feed shaft 3. The slip ring 31 is a conductive component for supplying power to the rotatable feed 22 from a fixed-side power supply section provided in the motor chamber 12.

When performing weather observation using the radar device B1, in the rotational drive device A1, first, the pair of Luneberg lenses 21 and the pair of feeds 22 are integrally rotated around the azimuth axis Oy. This is done by rotating the outer cylinder shaft 5 by the motor M1. At this time, if the motor M2 is kept stationary, the inner cylinder shaft 4 rotates at the same rotational speed as the outer cylinder shaft 5. In this case, the pair of feeds 22 do not rotate relative to the pair of Luneberg lenses 21. Observation around all azimuths of 0 to 360 degrees in the horizontal direction is possible by rotation around the azimuth axis Oy. Next, in addition to the rotation around the azimuth axis Oy, the pair of feeds 22 are rotated around the elevation axis Ox around the Luneberg lens 21. As a result, it is possible to observe an elevation angle of 0 to 90 degrees in each horizontal direction. At this time, the motor M2 is rotated to cause a difference between the rotation speed of the outer cylinder shaft 5 and the rotation speed of the inner cylinder shaft 4. The pair of feeds 22 rotate around the elevation axis Ox around the pair of Luneberg lenses 21 in accordance with the rotational speed difference. By appropriately rotating the motor M2 forward and backward, the radar apparatus B1 can perform weather observation for the entire sky region desired from the observation point.

A1, A2 Rotation drive devices B1, B2 Radar device M1 (first) motor M2 (second) motor Ox Elevation shaft (second central shaft)
Oy azimuth axis (first central axis)
3 Feeding shaft 4 Inner cylinder shaft (second rotating shaft)
5 Outer cylinder shaft (first rotating shaft)
7 Differential Reducer 8 Elevation Sensor Unit 11 Radome 12 Motor Chamber 21 Luneberg Lens (First Driven Body)
22 Feed (second driven body)
23 Bracket 24 Gear 25 Elevation rod (third rotating shaft)
26 Gear 27 bevel gear 31 slip ring (rotary connectors)
41 Bevel gear 42 Pulley 51 Support 52 Pulley 60 Output shaft 61 Worm gear 62, 63 Output shaft 64, 65 Pulley 70 Output shaft 71 Input shaft 72 Differential shaft 73 Output shaft 74, 75, 76 Pulley 77 Worm gear 78 Output shaft 79 Pulley 711 715 belt 81 moving body 82 sensor