Damper for a rail vehicle, monitoring system for a damper and method for monitoring a damper

• Main Authors: Lizell, Magnus, Strandberg, Per, Westman, Anders, Koch, Thilo
• Format: Patent
• Language: English
• Published: 11.12.2020
• Subjects: BLASTING; COUPLINGS; DRAUGHT AND BUFFING APPLIANCES; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RAILWAYS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The present invention relates to a damper for a rail vehicle, the damper comprising- a cylindrical housing (1) wherein a hollow piston (2) is received axially movable,- a working chamber (5) of variable volume in the housing,- a overflow chamber (4) of variable volume in the piston, the hydraulic overflow chamber (5) being connected to the hydraulic working chamber (5) via a throttle (8) that is in a flow passage between the working chamber (5) and the overflow chamber (4), - a spring chamber (3) of variable volume in the piston, the spring chamber (3) being configured to hold a gas volume for acting as a spring, and the spring chamber being separated from the hydraulic overflow chamber (4) by a separator piston (6) that is axially movable,and the damper further comprising a pressure detector (7) that is configured to detect a pressure in at least one of the spring chamber (3), the working chamber (5) and the overflow chamber (4).The invention also relates to a monitoring system and to a method for monitoring a pressure in a damper.