HYDRAULIC CONTROL DEVICE OF FORKLIFT TRUCK
A hydraulic control device of a forklift truck includes a first hydraulic cylinder [14], a first instructing member [22], a second hydraulic cylinder [19], a second instructing member [23], a hydraulic pump [30], an electric motor [31], a first oil passage [K1], a lowering control valve [32], a seco...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
19.10.2016
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Subjects | |
Online Access | Get full text |
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Summary: | A hydraulic control device of a forklift truck includes a first hydraulic cylinder [14], a first instructing member [22], a second hydraulic cylinder [19], a second instructing member [23], a hydraulic pump [30], an electric motor [31], a first oil passage [K1], a lowering control valve [32], a second oil passage [K2] that is branched from the first oil passage [K1] at a junction [Q], a flow control valve [37], a first pilot passage [51] through which pressure in the first oil passage [K1] at a position between the first hydraulic cylinder [14] and the lowering control valve [32] is applied to a first accommodating chamber (43) of the flow control valve [37] as the pressure [P1] upstream of the lowering control valve [32], and a second pilot passage [52] through which pressure in the first oil passage [K1] at a position between the lowering control valve [32] and the hydraulic pump [30] is applied to a second accommodating chamber (46) of the flow control valve [37] as the pressure downstream [P2] of the lowering control valve [32]. |
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Bibliography: | Application Number: EP20160163797 |