EP 0245592 B1 19900404 - CONTROL DEVICE FOR THE SWIVEL MOVEMENT OF A GUIDING RAIL OF A LIFT COMPRISING SEVERAL GUIDING RAILS
Title (en)
CONTROL DEVICE FOR THE SWIVEL MOVEMENT OF A GUIDING RAIL OF A LIFT COMPRISING SEVERAL GUIDING RAILS
Publication
Application
Priority
DE 3611241 A 19860404
Abstract (en)
[origin: EP0245592A1] 1. Control apparatus for the swivelling movement of a guide rail of a hoist which is formed from a plurality of guide rails and on the guide rails of which a cable-drawn load-carrying means can be driven via a hydraulic drive, at least one guide rail being swivellable relative to an adjacent guide rail by means of a swivelling apparatus, characterized in that, connected into a pump line (26) supplied by a hydraulic pump (25) there is a spool valve (27) designed as a 4/3-way valve which, in a first position (a) (erection of the swivellable guide rail 6), via a control line (28) connected downstream of the spool valve, opens a hydraulically deblockable nonreturn valve (29) in a closed, biased (biasing valve 30) bypass (31) of the winch motor (32) (braked cable dispensing by the winch motor) ; in a second position (c) (swivelling down of the swivellable guide rail), via a pressure-reducing valve (33) connected downstream of the spool valve (27), subjects the winch motor (32) to a slight torque (winding up of cable) ; and in the third position (b) (zero position) connects both the pump line (26) and the control line (28) to the return line (34).
IPC 1-7
IPC 8 full level
B66B 9/16 (2006.01)
CPC (source: EP)
B66B 9/16 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0245592 A1 19871119; EP 0245592 B1 19900404; AT E51601 T1 19900415; DE 3611241 C1 19871105; DE 3762117 D1 19900510; ES 2014440 B3 19900716
DOCDB simple family (application)
EP 87102477 A 19870221; AT 87102477 T 19870221; DE 3611241 A 19860404; DE 3762117 T 19870221; ES 87102477 T 19870221