Title:
FLUID PRESSURE CONTROL DEVICE AND FORKLIFT PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2018/193740
Kind Code:
A1
Abstract:
This fluid pressure control device (100) is provided with: a first control valve (30) which controls the flow rate of a hydraulic oil supplied to a lift cylinder (15); a second control valve (40) and a third control valve (50) which control the flow rates of the hydraulic oil supplied to a tilt cylinder (16) and an attachment cylinder (17), respectively; a first load pressure passage (71) through which the load pressure of the lift cylinder (15) is guided; a second load pressure passage (72) through which the load pressure of the tilt cylinder (16) and the attachment cylinder (17) is guided; and a flow limiting valve (80) which is provided in a supply passage (21) between the first control valve (30) and the second control valve (40). The flow limiting valve (80) limits the through-flow rate of the hydraulic oil if the load pressure guided through the first load pressure passage (71) is greater than the load pressure guided through the second load pressure passage (72).
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Inventors:
ISHIBASHI KOKI (JP)
NAKAMURA MASAYUKI (JP)
TERAO TAKESHI (JP)
NAKAMURA MASAYUKI (JP)
TERAO TAKESHI (JP)
Application Number:
PCT/JP2018/008817
Publication Date:
October 25, 2018
Filing Date:
March 07, 2018
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F15B11/042; B66F9/22; F15B11/00
Domestic Patent References:
| WO2016143167A1 | 2016-09-15 |
Foreign References:
| JPH0231004A | 1990-02-01 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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