EP 1222416 A2 20020717 - VALVE CONTROL UNIT FOR A HYDRAULIC ELEVATOR
Title (en)
VALVE CONTROL UNIT FOR A HYDRAULIC ELEVATOR
Title (de)
STEUERVENTILEINHEIT FÜR EINEN HYDRAULISCHEN AUFZUG
Title (fr)
UNITE SOUPAPE DE COMMANDE POUR UN ASCENSEUR HYDRAULIQUE
Publication
Application
Priority
- CH 13122000 A 20000703
- EP 0106273 W 20010601
Abstract (en)
[origin: WO0202974A2] The invention relates to a valve control device (28) for a hydraulic elevator. Said valve control device comprises two control valves (5, 15) which are used to control the flow of hydraulic oil from a lifting cylinder driving the elevator car or from the lifting cylinder to the tank. During the upward journey of the elevator car, hydraulic oil is fed from the tank to the lifting cylinder via the valve control unit (28) by means of a pump which is driven by an electric motor. During the downward journey of the elevator car, the hydraulic oil flows to the tank via the valve control unit (28) without the pump being in operation. According to the invention, a respectively individual control valve (5, 15) is provided in the valve control unit in order to control the upward and downward journeys of the elevator car, whereby each valve functions as a return valve and a proportional valve. Each control valve (5, 15) is provided with a throttle element (35; 55) which can move in relation to the seat (36; 56). A readjusting spring (37; 57) and a relay valve (5v; 15v) act upon the throttle element (35; 55) and can be actuated by an electrically controllable proportional magnet (5m; 15m). The valve control unit (28) is easily constructable and can therefore be produced at low cost. One particular advantage of the invention is that adjusting elements are not required.
IPC 1-7
IPC 8 full level
B66B 1/04 (2006.01); B66B 1/24 (2006.01); B66B 9/04 (2006.01); B66B 11/04 (2006.01); F15B 11/00 (2006.01); F15B 11/028 (2006.01); F15B 11/04 (2006.01); F15B 11/08 (2006.01); F15B 13/01 (2006.01); F15B 13/00 (2006.01)
CPC (source: EP KR US)
B66B 1/24 (2013.01 - EP US); B66B 9/04 (2013.01 - EP US); F15B 11/003 (2013.01 - EP US); F15B 13/01 (2013.01 - EP US); F15B 13/02 (2013.01 - KR); F15B 2013/008 (2013.01 - EP US); F15B 2211/20515 (2013.01 - EP US); F15B 2211/20538 (2013.01 - EP US); F15B 2211/26 (2013.01 - EP US); F15B 2211/30515 (2013.01 - EP US); F15B 2211/40515 (2013.01 - EP US); F15B 2211/40584 (2013.01 - EP US); F15B 2211/413 (2013.01 - EP US); F15B 2211/41572 (2013.01 - EP US); F15B 2211/428 (2013.01 - EP US); F15B 2211/46 (2013.01 - EP US); F15B 2211/55 (2013.01 - EP US); F15B 2211/625 (2013.01 - EP US); F15B 2211/6309 (2013.01 - EP US); F15B 2211/6313 (2013.01 - EP US); F15B 2211/6343 (2013.01 - EP US); F15B 2211/6355 (2013.01 - EP US); F15B 2211/6651 (2013.01 - EP US); F15B 2211/6653 (2013.01 - EP US); F15B 2211/7052 (2013.01 - EP US); F15B 2211/75 (2013.01 - EP US); F15B 2211/8613 (2013.01 - EP US)
Citation (search report)
See references of WO 0202974A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0202974 A2 20020110; WO 0202974 A3 20020523; AU 770145 B2 20040212; AU 8383101 A 20020114; BR 0106900 A 20020716; CA 2383190 A1 20020110; DE 50111267 D1 20061130; EP 1222416 A2 20020717; EP 1222416 B1 20061018; HR P20020191 A2 20040229; JP 2004502114 A 20040122; KR 20020030792 A 20020425; MX PA01013142 A 20030820; PL 357194 A1 20040726; US 2002153204 A1 20021024; US 6742629 B2 20040601
DOCDB simple family (application)
EP 0106273 W 20010601; AU 8383101 A 20010601; BR 0106900 A 20010601; CA 2383190 A 20010601; DE 50111267 T 20010601; EP 01962699 A 20010601; HR P20020191 A 20020301; JP 2002507202 A 20010601; KR 20027002081 A 20020218; MX PA01013142 A 20010601; PL 35719401 A 20010601; US 1835401 A 20011219