Title:
CONTACTLESS POWER SUPPLY FOR CONSTRUCTION SITE LIFT
Document Type and Number:
WIPO Patent Application WO/2010/085029
Kind Code:
A1
Abstract:
The present invention relates to a power supply apparatus for construction site lift equipment. The lift equipment for a construction site includes a lift for transporting workers or construction materials, and a mast for elevating the lift. The power supply apparatus for supplying power to a driver for elevating the lift comprises: a first current-converting unit which receives three-phase AC power from an external power supply and converts the received power into a high-frequency single current; a current supply member including a litz cable through which the high-frequency single-phase current converted by the first current-converting unit flows, and a track member for fixing the litz cable such that the litz cable is spaced apart from the mast by a predetermined gap; a current-generating member which is installed in the lift and spaced apart from the litz cable by a predetermined gap, and which includes a magnetic induction part connected to a cage, a protection cover for covering the outer surface of the magnetic induction part, and rotating means interposed between the protection cover and the track member and rotatably coupled to the protection cover by coupling means; and a second current-converting unit which receives, via the cage, electrical power generated by the current-generating member, converts the supplied electrical power into three-phase AC power, and supplies the converted power to the driver.
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Inventors:
RYU KYUNG NAM (KR)
LEE JAE SUNG (KR)
JEONG DONG JUN (KR)
JEONG HONG KU (KR)
LEE JAE SUNG (KR)
JEONG DONG JUN (KR)
JEONG HONG KU (KR)
Application Number:
PCT/KR2009/005667
Publication Date:
July 29, 2010
Filing Date:
October 01, 2009
Export Citation:
Assignee:
LIFTEC CO LTD (KR)
RYU KYUNG NAM (KR)
LEE JAE SUNG (KR)
JEONG DONG JUN (KR)
JEONG HONG KU (KR)
RYU KYUNG NAM (KR)
LEE JAE SUNG (KR)
JEONG DONG JUN (KR)
JEONG HONG KU (KR)
International Classes:
B66B11/04
Foreign References:
| JPH06127854A | 1994-05-10 | |||
| KR20080087451A | 2008-10-01 | |||
| KR100302557B1 | 2001-09-22 |
Attorney, Agent or Firm:
KIM, Chan Deok (3rd Fl. Baek-Ak Bldg.,828-52, Yeoksam-dong, Gangnam-gu, Seoul 135-080, KR)
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