Abstract:
A work machine (1) comprises at least one structural element (21), at least one pressure medium operated actuator (22) for establishing at least one operation of the work machine, and at least one detection device (23) to determine the position of the structural element (21) of the work machine. An arrangement for controlling at least one operation of the work machine (1) comprises: a control valve arrangement (24) for controlling the actuator (22), and a control device (25) for controlling the control valve arrangement (24). The control device (25) is adapted to control said control valve arrangement (24) for adjusting the pressure and/or volume flow on the return line of the actuator (22) as dependent on the position of the structural element (21).
Abstract:
A field bus solenoid valve assembly has a sensor for detecting the commencement of an actuation cycle for moving a piston in a cylinder and piston assembly. A position sensor detects an end position of a piston in a cylinder and piston assembly at the end of the actuation cycle. A timer times the elapsed time between the initiation of the actuation cycle of the piston and when the position sensor for detecting an end position detects the piston in its end position at the end of the actuation cycle. A comparator operably connected to a storage device and the sensors for comparing elapsed time from the sensors to a normalized time or profile and a predetermined tolerance boundary in the storage device. An alarm device is actuated if the elapsed time is outside of the set tolerance boundary.
Abstract:
A fluid system includes a loading arm connected to a swivel joint. A counterbalance mechanism is connected between the loading arm and the swivel joint. An adjustment mechanism adjusts the counterbalance force applied by the counterbalance mechanism to the loading arm. The adjustment mechanism includes a guide plate connected to the swivel joint and includes a guide slot and a straight bore guide. A bracket is movably connected to the guide plate and has one or more apertures and a threaded bore guide. Fasteners extend through the guide slot and the one or more apertures to selectively secure the bracket to the guide plate. A lead screw is disposed at least partially within the straight bore guide and the threaded bore guide. Rotation of the lead screw causes the bracket to move along a length of the lead screw and thereby adjust the counterbalance force.
Abstract:
A pump system includes a closed-loop fluid circuit and an open-loop fluid circuit. The closed-loop fluid circuit includes a motor for rotating a first component connected to the closed-loop fluid circuit. A closed-loop pump drives the motor up to a first maximum rotational speed. The open-loop fluid circuit includes an open- loop pump for driving a second component connected to the open-loop fluid circuit. A control circuit includes a control valve for switching the outflow from the open- loop pump. The control valve selectively connects the open-loop pump to the closed-loop fluid circuit and simultaneously disconnects the open-loop pump from the open-loop fluid circuit. When the open-loop pump is connected to the closed- loop circuit, the closed-loop pump and the open-loop pump drive the motor at a second rotational speed greater than the first maximum rotational speed.
Abstract:
A multi-block manifold facilitates assembly of the manifold in a fluid handling apparatus during manufacture and disassembly and removal of a secondary manifold block of the manifold during service without disconnecting external tubes and flow control devices from the manifold. The external tubes are isolated and integral to a primary manifold block of the manifold which is permanently mounted in the apparatus and the flow control devices are integral to the secondary manifold block which is quickly, releasably secured to the primary manifold block in the apparatus.
Abstract:
Es wird ein Schnittstellenmodul zur Steuerung einer aus mehreren fluidischen Ventilen (19) bestehenden Ventileinheit (20) in Abhängigkeit von seriellen Steuersignalen eines Feldbusses vorgeschlagen, das mit einem Feldbusanschluss (16), mit parallelen Ventilsteuerausgängen (21) und mit Sensorsignaleingängen (29) versehen ist. Dieses Schnittstellenmodul (10) weist als kompakte Einheit ein eigenes, von der Ventileinheit (20) getrenntes Gehäuse (11) auf. Die parallelen Ventilsteuerausgänge (21) am Gehäuse (11) sind als Multipol- Anschlussanordnung ausgebildet, die zur Verbindung mit einem Multipol-Stecker (25) eines zur Ventileinheit (20) führenden Steuerkabels (24) ausgebildet ist. Am Gehäuse (11) sind mehrere Eingangsanschlüsse als Sensorsignaleingänge (29) angeordnet. Das Gehäuse (11) enthält eine Steuer- und/oder Diagnoseelektronikeinrichtung. Dieses Schnittstellenmodul (10) kann variabel und leicht austauschbar für verschiedenartige Ventileinheiten (20) eingesetzt werden.
Abstract:
An apparatus for controlling a valve including an enclosure that defines first and second chambers, an indicator proximate the first and second chambers, an operating media distribution system that is disposed in the first chamber, and an electronic control unit disposed in the second chamber. The operating media distribution system includes a manifold block that has an exterior surface, and a plurality of operating media distribution cartridges exchangeably disposed with respect to the manifold block. The manifold block defines a plurality of holes, an operating media supply passage and an operating media exhaust passage. Each of the plurality of operating media distribution cartridges is disposed in a respective one of the plurality of holes and includes a cylinder and a spool assembly that is disposed in and displaced relative to the cylinder. The electronic control unit operates at least one electromagnetic valve to control operating media flow.
Abstract:
Es wird ein modulares Steuergerät (1) vorgeschlagen, das mehrere in einer Aufreihungsrichtung (4) aufeinanderfolgend angeordnete Steuermodule (5) aufweist. Mindestens ein einzelnes Steuermodul (5) und/oder mindestens eine Steuermodulgruppe (27) sind zwischen zwei in der Aufreihungsrichtung (4) beabstandeten Tragelementen (28) platziert. An den Tragelementen (28) ist mindestens ein das/die dazwischen liegende (n) Steuermodul (e) in der Aufreihungsrichtung (4) überspannendes Überbrückungselement (29) abnehmbar und/oder wegschwenkbar fixiert. Das Überbrückungselement (29) fungiert als Abdeckung und/oder als Informationsträger für die überspannten Steuermodule (5).
Abstract:
Bei einer fluidischen Steuereinrichtung mit wenigstens einem, wenigstens einen fluidischen Aktuator, wie Kolben, Membrane, Schieber, Kombinationen aus diesen oder dergleichen aufweisenden Grundkörper und mit wenigstens einem Deckelelement wobei in dem Grundkörper und/oder in dem Deckelelement Steuer-Λ/ersorgungskanäle angeordnet sind, die mit in dem Grundkörper angeordneten Fluidkanälen fluidisch verbunden sind, sind die Steuer- /Versorgungskanäle durch mittels Laserschweißen hergestellte Schweißnähte zwischen dem Grundkörper und dem wenigstens einen Deckelelement begrenzt.