Title:
HYDRAULIC ELEVATOR RENOVATION METHOD AND ELEVATOR APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/030901
Kind Code:
A1
Abstract:
According to the present invention, an elevator apparatus that has been renovated is provided with: a hydraulic cylinder that was originally used in a hydraulic elevator apparatus; a linear motor comprising a linear motor secondary conductor housed in the hydraulic cylinder and a primary coil installed above the hydraulic cylinder so as to enclose the secondary conductor; a position control sensor which, by making use of a hollow portion of the hydraulic cylinder, enables position detection in accordance with the position of a cage making an elevating or lowering movement; and a controller which executes position control on the linear motor on the basis of the result of the position detection by the position control sensor.
Inventors:
UGAWA KIMITAKE (JP)
Application Number:
PCT/JP2017/029142
Publication Date:
February 14, 2019
Filing Date:
August 10, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B66B7/00; B66B9/02
Foreign References:
| JPH02158587A | 1990-06-19 | |||
| JPH0737314B2 | 1995-04-26 | |||
| JPH04191274A | 1992-07-09 | |||
| JPH05116864A | 1993-05-14 |
Other References:
SATOSHI MIKAMI: "Yuatsu Elevator Kaishu no Linear Motor-ka", JOURNAL OF TECHNICAL DISCLOSURE, JAPAN INSTITUTE FOR PROMOTING INVENTION AND INNOVATION, vol. 2006, no. 504428, 8 August 2006 (2006-08-08)
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
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