公开(公告)号：EP2785568A2

公开(公告)日：2014-10-08

申请号：EP12794966.7

申请日：2012-11-30

申请人： KNORR-BREMSE Systeme für Schienenfahrzeuge GmbH

发明人： ELSTORPFF, Dr., Marc-Gregory ,  FUDERER, Erich ,  HAUPT, Robert ,  LEHNEIS, Michael ,  HAEMMERL, Bernhard ,  MUELLEK, Ferenc ,  ADAM, Zsolt

IPC分类号： B60T17/08 ,  F16D65/14

CPC分类号： B60T17/086 ,  B61H13/00 ,  F16D65/14 ,  F16D65/28 ,  F16D2121/06 ,  F16D2121/12 ,  F16D2121/16 ,  F16D2123/00 ,  F16D2125/60 ,  F16D2127/04

摘要： The invention relates to a spring brake cylinder having a housing (4) in which a spring store piston (6) which is loaded by at least one spring store spring (14, 16) and which has a piston rod (24) is axially movable, and having an emergency release device (26) comprising an emergency release actuation device, an emergency release mechanism with a toothed wheel (38) for interrupting the force flow between the spring store piston (6) and piston rod (24), and a holding device (30) which is designed for holding the emergency release device (26) in various holding positions, wherein the holding device has a pawl (30) which can be pivoted relative to the toothed wheel (38) into an engaged and a disengaged position, and the emergency release actuation device has at least one actuation element (42, 44), which is movable relative to the housing (4) and which is loaded into its initial position by restoring spring means (46), and a driver (40), which can be actuated together with the actuation element (44), for driving the pawl (30), in such a way that, upon an actuation of the actuation element (42, 44), the actuation force is transmitted to the driver (40) and from the latter to the pawl (30) in order to transfer the pawl (30) from a position in which it is engaged in relation to the toothed wheel (38) into a disengaged position. The invention provides that spring means (56; 62) are provided between the actuation element (42, 44) and the driver (40) or between the driver (40) and the pawl (30), which spring means are connected in parallel with the restoring spring means (46) and, when the pawl (30) is driven by the driver (40), are compressed in order to generate a spring force which loads the pawl (30) into the position in which it is disengaged from the toothed wheel (48).