EP 0713816 B1 19990217 - Hydraulic system for controlling rotation of a railroad car body and featuring an actuator depressurizing device
Title (en)
Hydraulic system for controlling rotation of a railroad car body and featuring an actuator depressurizing device
Title (de)
Hydraulisches System zum Steuern der Neigung eines Eisenbahnwagenkastens mit einer Vorrichtung zur Druckentlastung eines Stelltriebs
Title (fr)
Système hydraulique pour contrÔler l'inclinaison d'une caisse d'un véhicule ferroviaire avec un dispositif pour dépressurer un actionneur
Publication
Application
Priority
IT TO940954 A 19941125
Abstract (en)
[origin: EP0713816A1] A hydraulic system (1) for controlling rotation of a railroad car body (2), and presenting a motor pump assembly (8) connected to a hydraulic fluid tank (7) and to a supply line (14); a number of hydraulic actuators (3a, 3b, 4a, 4b) for exerting mechanical force on the body (2) to rotate it; a solenoid valve (26) for selectively connecting the hydraulic actuators (3a, 3b, 4a, 4b) to the supply line (14) and to a drain (29) in response to electric control signals; and a device (61) for depressurizing the actuators (3a, 3b, 4a, 4b) and disabling the system at the end of the duty period or in the event of an emergency. The device (61) presents two hydraulically driven, normally-open disabling valves (47) interposed between respective pairs of actuators (3a, 4a; 3b, 4b) and the drain (29), and presenting respective drive lines (59) connected to the supply line (14); and an electric distributor (46) for depressurizing the drive lines (59). <IMAGE>
IPC 1-7
IPC 8 full level
B61F 5/22 (2006.01)
CPC (source: EP)
B61F 5/22 (2013.01)
Designated contracting state (EPC)
CH DE ES FR LI SE
DOCDB simple family (publication)
EP 0713816 A1 19960529; EP 0713816 B1 19990217; DE 69507867 D1 19990325; DE 69507867 T2 19991230; ES 2131745 T3 19990801; IT 1267625 B1 19970207; IT TO940954 A0 19941125; IT TO940954 A1 19960525
DOCDB simple family (application)
EP 95118463 A 19951123; DE 69507867 T 19951123; ES 95118463 T 19951123; IT TO940954 A 19941125