Title:
アキュムレータを有する油圧エレベータ
Document Type and Number:
Japanese Patent JP2004505873
Kind Code:
A
Abstract:
A pump is situated between the hydraulic drive and the accumulator, this pump being driven by a motor and conveying hydraulic oil from the hydraulic drive to the accumulator and vice versa without the presence of control valves which influence the flow of hydraulic oil, such as proportionally pilot-operated valves. Since the pump is subjected to the pressure Pz in the cylinder line and the pressure Ps in the accumulator line, the motor of the pump only has to work against the differential pressure and in certain operating states, can even function as a generator and release electrical energy through a power output device controlling it. The speed of the car is controlled through the control of the motor alone by a control and regulation device, through the power output device.
Inventors:
Moser Daniel
Application Number:
JP2002519305A
Publication Date:
February 26, 2004
Filing Date:
August 09, 2001
Export Citation:
Assignee:
Boucher hydraurics akuchen gezelshaft
International Classes:
B66B9/04; (IPC1-7): B66B9/04
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith