SU1580470A1 - Two-speed platform-turning mechanism - Google Patents

Abstract

The invention is intended for use in radio telescopes with platforms supported on a rod balanced system. The purpose of the invention is to simplify the design and improve positioning accuracy. The two-speed platform turning mechanism contains engines large 5 and low 9 speed, main 3, additional 8 and differential 6 gears. The wheel 1 through the main gearbox 3, its low-speed 2 and high-speed 4 shafts kinematically connected to a high speed motor 5, which through differential 6 and an additional 8 gearboxes kinematically connected to a low speed engine 9. In quiescent mode, the two-speed platform turning mechanism is braked by the built-in normally closed brake low speed motor 9. In tracking mode, the low speed motor 9 is switched on, but the brake 7 is braked, the motor shaft of a higher speed 5 operates as transmission and transmits the torque running wheel 1, which is supported on a ring rail 10. The transfer mode includes high speed motor 5 and the releasing brake 7. transmitted torque to the impeller 1 with a high speed motor 5. 1 yl.

Description

The invention relates to a media structure and is intended for use in multi-support rotation mechanisms of large structures, in particular radio telescopes with platforms supported on a rod balance system.

The drawing shows the proposed mechanism, top view.

The two-speed platform turning mechanism consists of a running wheel 11 connected to the low-speed shaft 2 of the main gearbox 3, and the high-speed shaft 4 is connected to the high-speed engine 5. The high-speed motor is connected to the low-speed shaft of the differential gearbox 6 with the brake 7 by the opposite end of the output shaft. The high-speed shaft of the differential gearbox is connected via an additional gearbox 8 to the low-speed motor 9 with an integrated brake. The running wheel 1 is supported on the annular rail 10.

The two-speed rotation mechanism of the platform works as follows.

In the quiescent mode, the mechanism is braked by the built-in normally closed engine brake 9 of low speed.

In the tracking mode, the engine 9 is turned on at low speed, its shaft is de-cleared, brake 7 is closed. The angular velocity of the engine is reduced by an additional gearbox 8, as well as a differential gearbox 6, which operates as a planetary gear. High Speed Engine 5 Shaft

five

0

0

as a transmission, transmitting torque to the main gearbox 3, and through it to the traveling wheel 1.

one

In the transfer mode, the engine 5 is turned on at high speed and the brake is released 7. Brake pads of the latter release the housing of the differential gear 6 and the shaft of the low speed motor remains stationary. Torque is not transmitted to the low speed motor as a result of idling rotation by the satellites of the toothed ring carrier as they roll over the sun gear. The torque is transmitted by the high speed engine 5 only to the main gearbox 3 and the drive wheel 1.

Claims (1)

Invention Formula A two-speed platform turning mechanism containing a traveling wheel, a main gearbox, the high-speed shaft of which is connected to a high speed motor, a differential gearbox with a brake, an additional gearbox connected to a low-speed motor, so that, in order to simplify the design and improve positioning accuracy , a differential gearbox is connected between an additional gearbox and a high-speed motor, and the low-speed shaft of the main gearbox is connected to the running wheel.