Global Patent Index - EP 0544084 A3

EP 0544084 A3 19930804 - HOISTING DEVICE WITH VARIABLE LIFTING SPEED

Title (en)

HOISTING DEVICE WITH VARIABLE LIFTING SPEED

Publication

EP 0544084 A3 19930804 (DE)

Application

EP 92117055 A 19921006

Priority

DE 4138596 A 19911123

Abstract (en)

[origin: EP0544084A2] A hoisting device (5) which is driven by a three-phase asynchronous motor (4) having a squirrel-cage rotor is intended to be driven with a variable lifting speed from a single-phase or multi-phase AC network (1). This is possible as a result of a voltage intermediate-circuit converter (2) which is supplied on the network side from the single-phase or multi-phase AC network (1) and, on the load side, supplies a three-phase network (3) to which the asynchronous motor (4) is connected. The frequency of the three-phase network (3), and hence also the lifting speed of the hoisting device, can be higher than the frequency of the single-phase or multi-phase AC network (1) and the lifting speed resulting therefrom. Provided between the three-phase network (3) and the voltage intermediate-circuit converter (2) is a regulator (6) which limits the maximum frequency in a load-dependent manner. <IMAGE>

IPC 1-7

B66B 1/30

IPC 8 full level

B66B 1/30 (2006.01); B66C 13/26 (2006.01)

CPC (source: EP)

B66B 1/30 (2013.01)

Citation (search report)

  • [XP] DE 4038981 A1 19920611 - MAN GHH LOGISTICS [DE]
  • [A] WO 8801450 A1 19880225 - OTIS ELEVATOR CO [US]
  • [A] US 4501343 A 19850226 - SALIHI JALAL T [US]
  • [A] EP 0259656 A1 19880316 - SIEMENS AG [DE]
  • [AD] EP 0198249 A1 19861022 - MUELLER ARNOLD GMBH CO KG [DE]
  • [A] REGELUNGSTECHNIK Bd. 28, Nr. 4, April 1980, MUNCHEN DE Seiten 110 - 116 J. SCH\RNER 'Regelung von Drehstrom-Aufzuganlagen mit Drehstromsteller'
  • [A] YOSHIO SAKAI.: "ULTRAHIGH SPEED ELEVATORS CONTROLLED BY INTERTERS.", HITACHI REVIEW., HITACHI LTD. TOKYO., JP, vol. 38., no. 06., 1 December 1989 (1989-12-01), JP, pages 323 - 330., XP000102887, ISSN: 0018-277X

Designated contracting state (EPC)

DE ES FR IT NL SE

DOCDB simple family (publication)

EP 0544084 A2 19930602; EP 0544084 A3 19930804; EP 0544084 B1 19950719; DE 4138596 A1 19930527; DE 59202950 D1 19950824; ES 2077320 T3 19951116

DOCDB simple family (application)

EP 92117055 A 19921006; DE 4138596 A 19911123; DE 59202950 T 19921006; ES 92117055 T 19921006