Title:
産業車両の油圧システム
Document Type and Number:
Japanese Patent JP7188349
Kind Code:
B2
Abstract:
A hydraulic system (1) of an industrial vehicle (2) includes an oil tank (5) in which hydraulic oil is retained; a hydraulic pump (6, 16) that draws in the hydraulic oil from the tank (5) and supply the oil to a loading actuator (9, 10) and a brake unit (15); a brake valve (18) that controls the hydraulic oil to be supplied to the brake unit (15) according to an operation of a brake operation tool (14); a hydraulic oil cooler (19) that cools the hydraulic oil; a cooling passage (20) that allows the hydraulic oil to flow toward the cooler (19) and further allows the oil cooled in the cooler (19) to flow toward the brake unit (15); and a switching valve (21, 50) that switches between a first oil passage (21a, 50a) that cuts off a supply of the hydraulic oil from the hydraulic pump (16) to the cooling passage (20) and a second oil passage (21b, 50b) that allows the supply of the hydraulic oil from the hydraulic pump (16) to the cooling passage (20).
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Inventors:
Maruyama Daisuke
Tomoya Sato
Tomoya Sato
Application Number:
JP2019183618A
Publication Date:
December 13, 2022
Filing Date:
October 04, 2019
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
B60T17/02; B60T13/14; B60T13/68; B60T15/04; B60T17/00; B66F9/22; F15B1/02; F15B21/0423
Domestic Patent References:
| JP2002114499A | ||||
| JP6817244B2 | ||||
| JP2014055608A | ||||
| JP2018043824A |
Foreign References:
| KR1020190086988A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Mikami Takashi
Hiromitsu Nakayama
Yoshiki Kuroki
Mikami Takashi
Hiromitsu Nakayama