EP 0182338 A1 19860528 - Suspension device in a bogie for a railbound vehicle.
Title (en)
Suspension device in a bogie for a railbound vehicle.
Title (de)
Suspensionseinrichtung in einem Drehgestell für ein Schienenfahrzeug.
Title (fr)
Dispositif de suspension dans un bogie pour véhicule ferroviaire.
Publication
Application
Priority
SE 8405891 A 19841122
Abstract (en)
Suspension device in a bogie for a railbound vehicle, especially for freight cars. To obtain good ride properties both under empty load and full load conditions, a progressive suspension unit (22) is proposed, the stiffness of which increases exponentially with the load. According to the invention, the suspension unit (22) comprises two essentially cup-shaped elements, one (28) mounted under the bolster beam (30) and friction wedge dampers (32,34) and the other (26) mounted on top of the underhung U-bracket (20). Between these cup-shaped element an essentially spherical or semi-spherical elastic body (24) of rubber or an equivalent material is sandwiched. In alternative embodiments of the invention the lower cup-shaped element (26) is dispensed with by the elastic body (24 min or 24 sec ) directly resting on a shaped portion of the underhung U-bracket (38 or 40), which performs the same function as the eliminated lower cup-shaped element (26). The cup-shaped elements (26, 28) are formed so as to control the shape of the elastic body (24) during its compression to obtain a progressive spring characteristic both in the vertical and in the lateral direction.
IPC 1-7
IPC 8 full level
B61F 5/08 (2006.01)
CPC (source: EP)
B61F 5/08 (2013.01)
Citation (search report)
- US 3461816 A 19690819 - BECK MERRILL G
- US 2747519 A 19560529 - HEATER CHARLES L, et al
- US 2754768 A 19560717 - HILE HESTON H
- US 3352255 A 19671114 - ERNEST SHEPPARD FRANCIS
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0182338 A1 19860528; AU 5004485 A 19860529; NO 854560 L 19860523; SE 8405891 D0 19841122; SE 8405891 L 19860523; ZA 858893 B 19860730
DOCDB simple family (application)
EP 85114641 A 19851118; AU 5004485 A 19851119; NO 854560 A 19851115; SE 8405891 A 19841122; ZA 858893 A 19851120