Magnetic levitation transport system with non-contact inductive power supply and battery charging
AssigneeDaifuku Co., Ltd.
InventorsSatoru Shibata, Shigeto Murayama
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AssigneeDaifuku Co., Ltd.
InventorsSatoru Shibata, Shigeto Murayama
Estimating the term…
A magnetic levitation transport system includes magnetic levitation vehicles each driven by a linear motor to run along a track. Induction lines extend through predetermined blocks of the running track to transmit a high frequency sine-wave current. Each vehicle includes electromagnets to attract levitating magnetic members extending along the running track, a pickup coil resonant with a frequency of the induction lines to generate an electromotive force, and a battery chargeable by the pickup coil. The electromagnets receive power from the pickup coil and/or the battery.
A magnetic levitation transport system comprising:
A magnetic levitation transport system comprising:
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles: combination of…
Including safety or protection arrangements: against overcurrent
Using inductive coupling: of the resonant type
Circuit arrangements or systems for wireless supply or distribution of electric power: using two or more transmitting or receiving devices
Term ended 19 Jul 2013 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to magnetic levitation transport systems, and more particularly to a magnetic levitation transport system having vehicles lifted by a magnetic force generating device which attracts magnetic members extending along a running track, and propelled by a linear motor to transport loads.
2. Description of the Related Art
FIG. 1 is a front view of a magnetic levitation transport system according to the present invention;
FIG. 2 is a sectional side view of the magnetic levitation transport system;
FIG. 3 is a schematic plan view showing a layout of a guide rail in the magnetic levitation transport system;
Magnetic levitation transport systems according to the present invention will be described in detail hereinafter with reference to the drawings.
Like reference numerals are used to identify like parts in FIGS. 21 through 23 showing the prior art, which will not be described again.
Referring to FIGS. 1 through 3, a guide rail B has induction line units X extending along inner walls of predetermined blocks thereof. As shown in enlargement in FIG. 4, each induction line unit X includes an elongate plate-like bracket 14 formed of aluminum which is a magnetic field shielding material. The bracket 14 extends along the guide rail B, and supports pairs of upper and lower horizontal hangers 14a arranged at predetermined intervals along the guide rail B. Each hanger 14a supports a plastic duct 14b attached to a distal end thereof and extending along the guide rail B. The duct 14b contains an induction line L connected to a power source assembly P disposed outside the guide rail B as shown in FIG. 2. The induction line L is a strand wire (hereinafter called a litz wire) formed of thin insulated wires, and covered with an insulator such as a plastic material. The above-mentioned predetermined blocks are straight portions of the guide rail B, for example.