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公开(公告)号：WO2020172679A1
公开(公告)日：2020-08-27
申请号：PCT/US2020/019545
申请日：2020-02-24
Applicant: CLARK EQUIPMENT COMPANY
Inventor： ZENT, Kevin , GLASSER, David , LACOE, Scott , KRIEGER, Daniel , KALDOR, Matthew
Abstract: A hydraulic assembly (700) for an extendable lift arm assembly (230) can include an extension cylinder (712), a levelling cylinder (710), a main control valve (704), a flow combiner/divider (718), and one or more flow-blocking arrangements (724,726;744,746). The main control valve can be configured to control commanded movement of the extension and levelling cylinders of the lift arm assembly. The flow combiner/divider can be configured to hydraulically link the extension cylinder with the levelling cylinder for synchronised operation of the extension cylinder and the levelling cylinder. The one or more flow-blocking arrangements can be configured to restrict flow from rod or base ends of the levelling or extension cylinders during commanded extension or retraction of the levelling and extension cylinders, or in the absence of commanded movement of the levelling and extension cylinders, to maintain synchronised orientation of the levelling and extension cylinders.
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公开(公告)号：WO2020172678A1
公开(公告)日：2020-08-27
申请号：PCT/US2020/019544
申请日：2020-02-24
Applicant: CLARK EQUIPMENT COMPANY
Inventor： BINSTOCK, Mark , LACOE, Scott , KROH, Kjell , DIETER, Kenneth, L.
Abstract: A hydraulic sub-assembly (448) of the present disclosure can be used with a power machine (200). The hydraulic sub-assembly can include a support panel (482) and a plurality of components (486,490,492,496,498) secured to the support panel, to be supported by the support panel relative to the power machine. The plurality of components can include a control valve (486) configured to provide hydraulic control of the work functions. The support panel can be configured to be a structural portion of a cab (250) of the power machine (200).
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