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Title:
HYDRAULIC DEVICE AND INDUSTRIAL MACHINE
Document Type and Number:
Japanese Patent JP2013231389
Kind Code:
A
Abstract:

To provide an inexpensive hydraulic device capable of controlling pressure and flow rate of hydraulic oil by driving a hydraulic pump by means of an induction motor.

A hydraulic device includes: a hydraulic pump 5; an induction motor 4 for driving the hydraulic pump 5; an inverter device 3 for outputting a drive signal to rotate the induction motor 4; and a control device 2 for controlling the inverter device 3. When the hydraulic pump is driven by the induction motor, an inexpensive hydraulic device can be provided that is capable of controlling the pressure and flow rate of hydraulic oil by driving the hydraulic pump 5 by means of the induction motor 4 that is more inexpensive than expensive servomotors.


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Inventors:
NAKADA TETSUO
INOUE MINEO
Application Number:
JP2012103662A
Publication Date:
November 14, 2013
Filing Date:
April 27, 2012
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F04B17/05; B29C45/82; F04B49/06
Domestic Patent References:
JP2001206663A2001-07-31
JP2012062772A2012-03-29
JP2001263254A2001-09-26
JP2001090668A2001-04-03
JP2001090671A2001-04-03
JPS63309789A1988-12-16
Attorney, Agent or Firm:
Hiroshi Yamazaki
Mitsuo Tanaka
Yukinori Nakakura
Etsuko Isoe



 
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