Abstract:
본 발명은 농업용 작업차량의 유압장치에 관한 것으로, 작동유를 저장하는 오일탱크를 포함하고, 작동유를 가압하여 유압 유로에 공급하는 유압 펌프, 유압 유로 상에 배치되고 오일탱크와 유압 펌프를 연결하는 오일공급배관, 유압 유로 상에 배치되고 일 단이 오일탱크에 연결되고 오일공급배관을 통해 순환한 작동유를 오일저장탱크로 안내하는 오일회수배관, 일 단이 오일공급배관에 연결되고 타 단이 오일회수배관에 연결되고 오일공급배관을 유동하는 작동유에 함유된 공기를 오일회수배관으로 안내하는 에어 드레인 배관을 포함하여, 오일공급배관을 유동하는 작동유 중 공기는 에어 드레인 배관을 통해 오일탱크에 회수되고, 공기를 제외한 작동유 만이 작업기 또는 조향유닛으로 유입되므로, 소음 및 진동의 발생을 방지할 수 있다.
Abstract:
Die Erfindung betrifft ein gasbetriebenes Antriebssystem, umfassend einen Antrieb (A) mit einer ersten Kammer (1) und einer zweiten Kammer (2), die durch ein bewegliches Arbeitselement (3) des Antriebs (A), insbesondere durch einen Kolben (3) voneinander getrennt sind, wobei eine Kammer (1) der beiden Kammern (1, 2) zur Bildung einer das Arbeitselement (3) antreibenden Kammer (1) mit einer Gasquelle (4) verbindbar ist und die andere Kammer (2) der beiden Kammern (1, 2) zur Bildung einer der Bewegung des Arbeitselementes (3) entgegenwirkenden Kammer gleichzeitig über eine Abluftdrossel (5) mit einer Gassenke (6) verbindbar ist, insbesondere mittels eines Umschaltventils (7), wobei der antreibenden Kammer (1) ein Steuerventil (8) zugeordnet ist, durch welches hindurch die antreibende Kammer (2) mit Gas von der Gasquelle (4) befüllbar ist, wobei der Öffnungsquerschnitt des Steuerventils (8) in Abhängigkeit eines in Strömungsrichtung vor der Abluftdrossel (5) herrschenden oder über der Abluftdrossel (5) abfallenden Steuerdrucks einstellbar ist, wobei mit dem Steuerventil (8) der Öffnungsquerschnitt vergrößerbar ist, wenn mit fallendem Steuerdruck ein erster Grenzdruck unterschritten ist und der Öffnungsquerschnitt verkleinerbar ist, insbesondere das Steuerventil (8) schließbar ist, wenn mit weiter fallendem Steuerdruck ein zweiter Grenzdruck unterschritten ist. Die Erfindung betrifft auch ein Verfahren zum Betrieb eines gasbetriebenen Anriebssystems.
Abstract:
Die Erfindung betrifft ein Schaltmittel von Arbeitsfluid für eine selbständige Polung der Zu- und Rückführung von Arbeitsfluid für Verbraucher. Um bei unrichtiger Polung der Anschlüsse in Hydrauliknetzwerken eine erforderliche Anspeisung des Verbrauchers sicher zu stellen, ist erfindungsgemäß vorgesehen, ein Schaltmittel vorzusehen, gebildet im Wesentlichen mit einem Anschlussteil (1), einem Ventilkörper (2) mit Anschlüssen für einen Zulauf P und einer Abführung T des Arbeitsmediums mit einem rohrförmigen, im Ventilkörper axial in Grenzen verschiebbarem Schaltteil (3) mit radialen Bohrungen B1, B2 in zwei axial distanzierten Ebenen mit einem Basisteil (4) und einem Topteil (5), jeweils die Verschiebungsgrenzen für das Schaltteil (3) bildend, wobei im Bereich der Innenoberfläche des Ventilkörper (2) und der Außenoberfläche des Schaltteiles (3) kooperierende Ringräume R1, R2, R3, R4, R5 zur jeweiligen Führung von Arbeitsfluid ausgeformt sind und die am Schaltteil (3) zum Topteil (5) hin mit Fluid beaufschlagbare Ringflächen A1, A4, A6 bei permanenter fluidaler Verbindung V der Ringräume R1 und R3 folgende Größenrelationen aufweisen: I. A2 = A3 > 0,5 x A1; II. A4 > A5 + A7; III. A3 + A7 > A4 + A6; IV. A1 = 2A2 – A4 + A5 -A6 + A7
Abstract:
A hydraulic tank (150) for a machine (10) is disclosed herein. The hydraulic tank (150) includes a casing (155) defining an interior space and having an outer surface (156), an inner surface (157) opposite the inner surface (157), and a return hydraulic fluid inlet (158, 159) extending through the casing (155). A first concave member (180, 190) is connected to the inner surface (157) of the casing (155) to form a passage (200, 202). The passage (200, 202) is positioned and shaped to transport hydraulic fluid from the return hydraulic fluid inlet (158, 159) to another location within the hydraulic tank (150).
Abstract:
An electro-hydraulic actuator (1) comprises a cylinder (2) comprising at least three chambers, a piston (3) configured to move within the cylinder and a rod (4) attached to the piston. At least two of the chambers comprise working chambers (5a, 5b) to move the piston (3) and the rod (4). The electro-hydraulic actuator (1) further comprises a hydraulic pump/motor (9) for providing pressure medium to and from the working chambers, and an electric motor (8) rotating the pump/motor (9). At least two working chambers (5a, 5b) comprise equal volumes, and at least one of said chambers, which is not one of said working chambers (5a, 5b), is a reservoir chamber (11) configured to act as an integrated reservoir.
Abstract:
A flow controller (12) that changes the flow rate of air exhausted from an air cylinder (100) in mid-stroke includes a first switching valve (20) displaced from a first position to a second position under the effect of pilot air, and causing one port (104) of the air cylinder (100) to communicate with a first channel (14) at the first position, exhausting air exhausted from the one port (104) of the air cylinder (100) while reducing the flow rate of the air using a first regulating valve (28) at the second position. Since the pilot air is taken into the first switching valve (20) from a second channel (16) in a system different from the system of the first channel (14), a second regulating valve (26) can be adjusted without being affected by the degree of opening of the first regulating valve (28).
Abstract:
The invention relates to a hydraulic joystick conversion system (1) which enables converting of the mechanical changes acquired in the hydraulic joystick systems to analog electrical signals and to universal communication protocols, essentially comprising multiple magnets (2) that are integrated to pins (P), multiple sensors (3) which measure the movements in positive and negative directions on the horizontal axis (X) and on the vertical axis (Y), and at least one electronic board (4) which enables converting of the changes that are sensed by the sensor (3) to control signals.
Abstract:
An energy-saving charge/discharge method controls the repeated charging and discharging of a working vessel in a manner that enables the storage and subsequent reuse of compressed gas during the repeated charge and discharge cycle. In contrast to the methods of the prior art, the method does not discard the entire mass of compressed gas during each discharge phase of the cycle. An energy savings results from the recycling of compressed gas, which reduces the net consumption of compressed gas for a given charge/discharge cycle of a given pressure vessel. A minimum amount of apparatus is required to implement the recycling of compressed gas.
Abstract:
A manual override assembly for a hydraulic power source is disclosed with twin spool valves, connecting rods, retaining plug assemblies, and a lever arm, where the spool has a bore with an off-set opening for inserting one end of the connecting rod, where the connecting rod connects the spool to the lever arm, and where the retaining plug assembly is used to mount the manual override assembly to the body of the hydraulic power source.
Abstract:
The present disclosure sets forth an axial piston pump with greatly improved throughput. The axial piston pump provides cylinders, antechambers, and fluid flow apertures which are uniquely shaped and dimensioned so as to increase the overall flowability and expulsion rate of the piston pump. By providing curvilinear transition zones and fluid flow apertures, the cylinders can be completely filled and pressurized even at the extremely high pressures and RPMs required by modern machines. Such machines may include front-end loaders, excavators, pipe layers, graders, and the like wherein such pumps can be used to power hydraulic cylinders moving the implements, work arms and other tools associated with such machines.