Brake actuator
AssigneeKnorr-Bremse Systeme FüR Schienenfahrzeuge GmbH
InventorsPeter Wolfsteiner, Erich Fuderer, Josef Staltmeir
Life of this patent
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Abstract
The invention relates to a brake actuator, especially a brake actuator for rail vehicle brake calipers for a disc brake. Said brake actuator comprises a service brake unit with an electromotive drive system for clamping and releasing the brake, a safety brake unit with a pre-loaded spring device for clamping the brake, and a brake spindle for converting the movements of the electromotive drive system into a translatory movement for activating a brake clamping mechanism; especially for activating brake calipers. The invention is characterized in that the pre-loaded spring device and the brake spindle are positioned coaxially in relation to each other and are mechanically series-connected.
Claims17
Brake actuator, particularly for a rail vehicle brake, comprising:
- a service brake unit with an electric-motor drive for the application and release of the brake,
- a safety brake unit having at least one pre-loaded spring device for the application of the brake,
- a brake spindle for converting the rotating movement of the electric-motor drive to a translatory movement for the actuation of a brake application mechanism,
- the at least one pre-loaded spring device and the brake spindle being coaxial,
- the brake spindle and the pre-loaded spring device being mechanically connected in series such that forces from the spindle and the spring are not added to one another in any operating position on a brake lining, and
- the brake spindle is axially displaceably guided in, and non-rotatable relative to, one of an output shaft or in a first sleeve of a transmission of the electric-motor drive.
Dependencies are inferred from the claim text.