Gritter or sander vehicle hydraulic appts. control device - measures pressure and revs. rate of hydromotor and controls valve to provide correct pressure of fluid

Steuereinrichtung für eine Hydraulikanlage

Abstract

The control device has a scale (17, 17', 18, 18') connected to proportional valves (15, 16). A hydro-pump (10) controllably provides pressure fluid for two hydromotors (23, 29). The respective hydromotor controllers include proportional valves (15, 16) and scales (17, 18). The controllers also include a flow limiting valve to provide the correct dosage of pressure fluid through the proportional valve. An electronic control device (47) uses the hydromotor revolution speed to set the proportional valves. The hydromotor and hydropump are in fixed positions. The electronic control device includes a pressure sensor (76, 77) for measuring actual pressure and providing desired revs. speed value for the control device. ADVANTAGE - Sensitive control, is constructed with few hydraulic control devices, compact, accurate hydromotor control.

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    DE-10040737-A1February 28, 2002Mannesmann Rexroth AgValve arrangement for pressure medium supply hydraulic consumer has consumer pressure limitation valve with pilot valve unit
    DE-102013210599-A1December 11, 2014Sms Siemag AktiengesellschaftVorrichtung und Verfahren zum Antrieb von rotierbaren Bürsten zur Reinigung von Rollen oder Walzen in einer Walz- oder Richtanlage
    DE-19749639-A1May 12, 1999Mannesmann Rexroth AgHydraulische Schaltung