Title:
HYDRAULIC DRIVING DEVICE OF CARGO HANDLING VEHICLE
Document Type and Number:
Japanese Patent JP2017088364
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic driving device of a cargo handling vehicle which can reduce an engine load and reduce fuel consumption.SOLUTION: In a hydraulic driving device 16, a branch point 91 between a lift cylinder 4 and a bypass flow control valve 50 on hydraulic piping 49 is connected to a suction port 17a of a hydraulic pump motor 17 by hydraulic piping 47 for feeding hydraulic oil from the lift cylinder 4 to the hydraulic pump motor 17. This configuration allows the hydraulic oil from the lift cylinder 4 to be introduced through the hydraulic piping 47 to the suction port 17a of the hydraulic pump motor 17 during descent of a fork. This allows energy of the hydraulic oil to be introduced accompanying the descent of a fork to be utilized for rotating the hydraulic pump motor 17. More specifically, this allows a load of an engine 18 that rotates the hydraulic pump motor 17 to be reduced.SELECTED DRAWING: Figure 2
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Inventors:
UEDA SUKENORI
YOKOMACHI NAOYA
MATSUO TSUTOMU
UNO MINESHI
YOKOMACHI NAOYA
MATSUO TSUTOMU
UNO MINESHI
Application Number:
JP2015223218A
Publication Date:
May 25, 2017
Filing Date:
November 13, 2015
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
B66F9/22
Domestic Patent References:
| JP2013133196A | 2013-07-08 | |||
| JP2012062137A | 2012-03-29 | |||
| JP2013159431A | 2013-08-19 |
Foreign References:
| US20130145751A1 | 2013-06-13 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Takashi Mikami
Hiromitsu Nakayama
Yasuki Yanagi
Yoshiki Kuroki
Takashi Mikami
Hiromitsu Nakayama
Yasuki Yanagi