EP 0915804 B1 20030521 - METHOD AND DEVICE FOR CONTROLLING A HYDRAULIC LIFT
Title (en)
METHOD AND DEVICE FOR CONTROLLING A HYDRAULIC LIFT
Title (de)
VERFAHREN SOWIE VORRICHTUNG ZUR STEUERUNG EINES HYDRAULISCHEN AUFZUGS
Title (fr)
PROCEDE ET DISPOSITIF DE COMMANDE D'UN ASCENSEUR HYDRAULIQUE
Publication
Application
Priority
- CH 9800040 W 19980204
- CH 26097 A 19970206
- CH 69397 A 19970322
Abstract (en)
[origin: WO9834868A1] The invention concerns a method and device for controlling a hydraulic lift, wherein a lift car (2) can be moved upwards and downwards in a lift shaft (1). The lift car (2) is connected to a reciprocating piston and is driven by an oil pump (40) which delivers pressurized oil between a tank (41) and a lifting cylinder (3). The oil pump (40) is driven by a motor (39) which is fed by a controllable power-supply part (28). The speed of the lift car (2) is detected by a sensor (13). A control and regulating unit (10) controls and regulates the assemblies influencing the movement of the lift car (2), that is the motor (39) and a valve unit (43). During upwards travel, the speed of the lift car (2) is controlled by regulating the motor (39). According to the invention, during downwards travel, a regulating and controlling effect is exerted on the valve unit (43). At low speeds when the lift car (2) is starting to move or braking, the speed is regulated by actuating the valve unit (43); at faster speeds, such as during upwards travel, the speed is regulated by regulating the motor (39).
IPC 1-7
IPC 8 full level
B66B 1/26 (2006.01); B66B 1/04 (2006.01); B66B 1/24 (2006.01); B66B 9/04 (2006.01); F15B 11/042 (2006.01); F15B 11/044 (2006.01); F15B 11/048 (2006.01)
CPC (source: EP KR US)
B66B 1/04 (2013.01 - KR); B66B 1/24 (2013.01 - EP US); B66B 9/04 (2013.01 - EP US); F15B 11/042 (2013.01 - EP US); F15B 11/044 (2013.01 - EP US); F15B 11/048 (2013.01 - EP US); F15B 2211/20538 (2013.01 - EP US); F15B 2211/20561 (2013.01 - EP US); F15B 2211/30505 (2013.01 - EP US); F15B 2211/40515 (2013.01 - EP US); F15B 2211/40584 (2013.01 - EP US); F15B 2211/428 (2013.01 - EP US); F15B 2211/46 (2013.01 - EP US); F15B 2211/473 (2013.01 - EP US); F15B 2211/50536 (2013.01 - EP US); F15B 2211/5151 (2013.01 - EP US); F15B 2211/55 (2013.01 - EP US); F15B 2211/615 (2013.01 - EP US); F15B 2211/6309 (2013.01 - EP US); F15B 2211/6326 (2013.01 - EP US); F15B 2211/6336 (2013.01 - EP US); F15B 2211/6355 (2013.01 - EP US); F15B 2211/6652 (2013.01 - EP US); F15B 2211/7052 (2013.01 - EP US); F15B 2211/75 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
WO 9834868 A1 19980813; CA 2251107 A1 19980813; CA 2251107 C 20061114; CN 1105074 C 20030409; CN 1220644 A 19990623; DE 59808428 D1 20030626; EP 0915804 A1 19990519; EP 0915804 B1 20030521; JP 2000508614 A 20000711; KR 100510204 B1 20051116; KR 20000064850 A 20001106; TW 346475 B 19981201; US 6142259 A 20001107
DOCDB simple family (application)
CH 9800040 W 19980204; CA 2251107 A 19980204; CN 98800390 A 19980204; DE 59808428 T 19980204; EP 98900840 A 19980204; JP 53348098 A 19980204; KR 19980707906 A 19981002; TW 87101365 A 19980204; US 15579099 A 19990210