EP 0669280 B1 19990602 - Lifting arrangement for detachable counterweight
Title (en)
Lifting arrangement for detachable counterweight
Title (de)
Hubeinrichtung für eine Umsetzvorrichtung
Title (fr)
Installation de levage pour contrepoids démontable
Publication
Application
Priority
DE 4405780 A 19940223
Abstract (en)
[origin: EP0669280A1] The counterweight reconfiguration system for turntable cranes has lifting elements (8L,8R) consisting of a fixed upper cylinder cage (9) and a rotating lower cylinder cage (10), of square cross-section. The base plate (11) of the upper cage is fixed to the turntable (7) via a rotary bearing (12). Each cage is fitted with a counterweight lifting cylinder (13), with a squared upper end which slides inside the cages. A transverse bolt (14) is fitted to the lower end of the cylinders. A piston rod (17) is linked to each lower cage, and can turn it to allow the bolt to pass through the counter weights.
IPC 1-7
IPC 8 full level
B66C 23/74 (2006.01); B66C 23/76 (2006.01)
CPC (source: EP US)
B66C 23/74 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 4405780 A1 19950824; DE 59506061 D1 19990708; EP 0669280 A1 19950830; EP 0669280 B1 19990602; ES 2132440 T3 19990816; JP 3675871 B2 20050727; JP H07257879 A 19951009; US 5524777 A 19960611
DOCDB simple family (application)
DE 4405780 A 19940223; DE 59506061 T 19950128; EP 95101185 A 19950128; ES 95101185 T 19950128; JP 3118295 A 19950220; US 39401895 A 19950223