Title:
産業車両の油圧駆動装置
Document Type and Number:
Japanese Patent JP6802766
Kind Code:
B2
Abstract:
To provide a hydraulic transmission of an industrial vehicle which can achieve space saving and cost reduction.SOLUTION: A hydraulic transmission 1 includes: a lift valve 15 disposed between a hydraulic pump 4 and a tank 3 and a lift cylinder 7; a hydraulic oil passage 19 which connects the lift cylinder 7 with the lift valve 15 and in which hydraulic oil flows in both direction between the lift cylinder 7 and the lift valve 15; a hydraulic oil passage 21 which connects a discharge port 4b of the hydraulic pump 4 with the lift valve 15 and in which the hydraulic oil flows from the hydraulic pump 4 to the lift valve 15; and a hydraulic oil passage 26 which connects the tank 3 with the lift valve 15 and in which the hydraulic oil flows from the lift valve 15 to the tank 3. The lift valve 15 has: a main spool 39 which moves according to an operation state of a lift operation lever 18; and a flow regulator 40 which is disposed within the main spool 39 and controls a flow rate of the hydraulic oil flowing from the lift cylinder 7 to the tank 3.SELECTED DRAWING: Figure 1
Inventors:
Yuki Ueda
Tsujiro Saji
Shigeto Nakajima
Takenori Yukinori
Koichi Kinoshita
Tsujiro Saji
Shigeto Nakajima
Takenori Yukinori
Koichi Kinoshita
Application Number:
JP2017150917A
Publication Date:
December 23, 2020
Filing Date:
August 03, 2017
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Nishina Industry Co., Ltd.
Nishina Industry Co., Ltd.
International Classes:
F15B21/14
Domestic Patent References:
| JP2015072055A | ||||
| JP2008157407A | ||||
| JP2016217378A | ||||
| JP2175600A | ||||
| JP2003269409A |
Foreign References:
| US20150369260 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Takashi Mikami
Hiromitsu Nakayama
Yoshiki Kuroki
Takashi Mikami
Hiromitsu Nakayama