Abstract:
There is provided an apparatus comprising a synthetically commutated machine (100) with one or more services, a prime mover (150) coupled to the machine, a hydraulic circuit extending between the one or more services and the plurality of hydraulic loads to thereby fluidically connect the one or more services to the plurality of hydraulic loads such that groups of one or more services are fluidically connected to respective groups of one or more hydraulic loads, the apparatus configured such that the flow of hydraulic fluid to or from a group of one or more services of the machine is controlled responsive to measuring a flow rate and/or pressure requirement of the group of one or more hydraulic loads which are fluidically connected to the group of one or more services, or receiving a demand signal indicative of a demanded pressure and/or flow rate based on a pressure and/or flow demand of the group of one or more hydraulic loads which are fluidically connected to the group of one or more services. The apparatus may for example be an excavator.
Abstract:
Die Erfindung betrifft eine Axialkolbenmaschine (100) für den Pumpen-und/oder Mo- torbetrieb, aufweisendein Gehäuse (10), eine mit dem Gehäuse (10) verbundenen An- schlußplatte(20) und einen im Gehäuseinnenraum (15) auf einer rotierbaren Triebwel- le (40) angeordnete Kolbentrommel (30), wobei in der Kolbentrommel (30) mindestens eine Zylinderbohrung (31) ausgebildet ist, in der ein Arbeitskolben (32) längsver- schiebbar angeordnet ist und dadurch mit der Zylinderbohrung (31) einen volumenver- änderbaren Zylinderraum (31) begrenzt, wobei der Zylinderraum (31) über mindestens eine hydraulische Verbindung (22) mit mindestens einem Vorkompressionsraum (50) verbindbar ist. Die Erfindung zeichnet sich dadurch aus, dass der mindestens eine Vorkompressions- raum (50) durch das Gehäuse (10) und der Anschlußplatte (20) gebildet ist.
Abstract:
Disclosed are apparatus adapted to dispense and/or aspirate liquids, such as in a clinical analyzer. In one aspect, a multi-chamber pump apparatus is disclosed that has a pump body containing first and second chambers, a piston having a first piston portion of a first pump area Al received in the first chamber, and a second piston portion of a second pumping area A2 received in the second chamber, and an actuator coupled to the piston. The first and second chambers can be selectively accessed to improve metering accuracy at dissimilar flow volumes from the chambers. Methods and systems including the multi-chamber pump apparatus are provided, as are other aspects.
Abstract:
The invention relates to a motor pump unit for a high-pressure cleaning device, comprising an electric motor and a pump, the electric motor having a motor housing which is surrounded by a cooling housing, forming an annular chamber with an annular chamber inlet and an annular chamber outlet. The pump has a drive housing, on which the motor shaft is mounted, a suction inlet and a pressure outlet and the annular chamber outlet is in fluidic connection with the suction inlet. The liquid that is to be pressurised by the pump can be supplied to the annular chamber inlet. To improve the motor pump unit in such a way that the thermal load on the drive housing can be reduced, said drive housing has at least one cooling channel which is located upstream of the suction inlet and through which the liquid that is to be pressurised can flow.
Abstract:
피스톤 펌프는 배출 홀을 구비하며 보어(bore)를 형성하는 슬리브 하우징(sleeve housing), 오일을 상기 보어로 유입시키기 위한 유입 유로를 구비하며 상기 보어에 왕복 이동 가능하도록 삽입되는 피스톤, 상기 유입 유로를 개폐할 수 있도록 설치되는 유입 밸브, 상기 배출 홀이 형성된 부분을 둘러싸도록 상기 슬리브 하우징에 체결되는 배출 밸브 커버, 상기 배출 홀을 개폐할 수 있도록 설치되는 배출 밸브, 그리고 상기 슬리브 하우징과 상기 피스톤 사이에 개재되어 밀봉 기능을 수행하는 밀봉 부재를 포함한다. 상기 밀봉 부재는 상기 피스톤의 이탈을 방지할 수 있도록 상기 피스톤이 걸리도록 형성되는 이탈 방지 턱을 구비한다.
Abstract:
본 발명에 따른 유압 펌프는, 유압 펌프 내 유체가 흐르는 유로 중 직선 유로와 직선 유로 상의 연결지점을 곡률이 형성되도록 하여, 연결 지점에 응력이 집중되는 현상을 방지할 수 있어 내구성이 향상되는 효과가 있으며, 제작 시 주물 형상을 곡률로 기형성하여 제작함으로써, 추가 기계가공을 줄일 수 있게되어 제품의 원가가 절감되는 효과가 있다.
Abstract:
Systems and methods of routing pressurized fluid from a fluid source are disclosed. The system includes a composite articulating arm. The composite articulating arm further includes a first articulating arm and a second articulating arm. The first articulating arm and second articulating arm are coupled via a connection. The composite articulating arm of the disclosed system further includes no more than five elbows and six rotation points.
Abstract:
A diaphragm pump having an improved wobble plate and cam/bearing assembly for increased pump life and improved inlet and outlet valve design for increased effective sealing area. A cam/bearing assembly includes a cam injection molded directly into an inner race of a bearing to prevent the cam from pulling away from the bearing. The wobble plate is injection molded directly onto an outer race of the bearing to prevent the wobble plate from pulling away from the cam and bearing. Inlet and outlet check valves include rounded peripheral relief zones that form a band, as opposed to a line, of effective sealing area when in the sealed position within a valve seat that eliminate or reduce sealing inconsistencies and increase sealing efficiencies.
Abstract:
Pumpe, insbesondere für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine, die mit einem Hochdruckbereich und einem Niederdruckbereich verschaltet ist, wobei der Niederdruckbereich eine Zulaufleitung und eine Rücklaufleitung aufweist, die über Stutzen (5a, 5b) mit der Pumpe (1) verschaltet sind, wobei die Stutzen (5a, 5b) in je eine Zulauföffnung und eine Rücklauföffnung an der Pumpe (1) dichtend eingesetzt sind. Erfindungsgemäß wird für ein Kraftstoffeinspritzsystem ein für einen Zulauf und einen Ablauf nutzbarer Stutzen (5a, 5b) angegeben, mit dem bei kostengünstiger Herstellung eine zuverlässige Dichtverbindung mit der Zulauföffnung und/oder der Rücklauföffnung herstellbar ist. Dies wird dadurch erreicht, dass der Stutzen (5a, 5b) aus einem Kunststoffwerkstoff gefertigt und dass der Stutzen (5a, 5b) in dem in die Zulauföffnung und/oder Rücklauföffnung eingesetzten Bereich von einer aus einem metallischen Werkstoff gefertigten Hülse (9) umgeben ist.