Title:
HYDRAULIC OIL SUPPLY DEVICE FOR INDUSTRIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/145566
Kind Code:
A1
Abstract:
A hydraulic oil supply device for an industrial vehicle comprises a first hydraulic oil tank that stores hydraulic oil, a second hydraulic oil tank that stores hydraulic oil, an upper communication pipe through which the upper part of the first hydraulic oil tank and the upper part of the second hydraulic oil tank communicate, a lower communication pipe through which the lower part of the first hydraulic oil tank and the lower part of the second hydraulic oil tank communicate, a first hydraulic oil pipe through which the first hydraulic oil tank and a hydraulic oil supply target supplied with hydraulic oil communicate and which has a suction port in the first hydraulic oil tank, a second hydraulic oil pipe through which the second hydraulic oil tank and the hydraulic oil supply target communicate and which has a discharge port in the second hydraulic oil tank, and a hydraulic oil pump that pumps hydraulic oil from the first hydraulic oil tank. The second hydraulic oil tank is an airtight tank sealed from outside air, the upper communication pipe has a first open end provided in the first hydraulic oil tank and a second open end provided in the second hydraulic oil tank, the opening height of the first open end is above the opening height of the suction port, and the opening height of the second open end is above the opening height of the discharge port.
Inventors:
KONDO EISUKE (JP)
Application Number:
PCT/JP2023/001308
Publication Date:
August 03, 2023
Filing Date:
January 18, 2023
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
F15B1/26; B66F9/075
Foreign References:
| JP2001027204A | 2001-01-30 | |||
| JPS6372301U | 1988-05-14 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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