Abstract:
An outside gas type accumulator has a mechanism for reducing the pressure difference occurring when liquid confined in a liquid chamber and gas filling the liquid chamber in zero-down state expand thermally, and restrains abnormal deformation of a bellows by reducing the pressure difference between the inside and outside of the bellows. A pressure difference regulation mechanism (21) reduces the pressure difference occurring when liquid confined in the liquid chamber (11) and gas filling the liquid chamber in the zero-down state expand thermally. The regulation mechanism (21) has a movable plate (22) supported by a coil spring (23) on the oil port (4) side of a bellows cap (8). During normal operation, the plate (22) moves together with the cap (8) by being supported by the spring (23), and the plate (22) moves together with the cap (8) and to be brought into contact with a seal (13) in the zero-down state. When the liquid and the filling gas expand thermally, the plate (22) maintains contact with the seal (13), and the cap (8) moves up to a position where the liquid pressure and the gas pressure are balanced while compressing the spring (23).
Abstract:
The invention relates to a piston-type accumulator comprising an axially displaceable piston (8) in a housing bore (5) and a seal (4) which is disposed between the piston (8) and the housing bore (5). Said seal is fixed inside the housing bore (5). The accumulator also comprises a cover (6) which is used to close the housing bore (5). The housing bore (5) is embodied as a stepped bore with an expanding diameter in the direction of the cover such that the seal (4) can be received in a simplified manner.
Abstract:
실린더 로드 내에 설치된 어큐뮬레이터에 의한 충격 흡수 기능의 실행과 그 정지를 임의로 행할 수 있도록 한 유압 실린더를 제공하기 위해서, 본 발명의 유압 실린더의 어큐뮬레이터는 실린더 로드 내를 제1과 제2의 두개의 실린더 로드실로 구획하는 어큐뮬레이터 피스톤과, 제2 실린더 로드실에 밀봉 충전된 가스체와, 제1 실린더 로드실과 서로 통하고, 외부로부터 작동유를 제1 실린더 로드실로 유입시키는 어큐뮬레이터 포트를 적어도 구비하고 있다.
Abstract:
Some of the present systems include a hydraulic power storage system having an accumulator configured to supply pressurized hydraulic fluid to a hydraulically actuated device to actuate the hydraulically actuated device and a drain in fluid communication with the accumulator and including a valve that is actuatable to drain hydraulic fluid from the hydraulic power storage system such that an internal pressure of the accumulator is reduced and a flow restrictor configured to reduce a flow rate of hydraulic fluid through the valve, a hydraulic pump configured to pressurize the accumulator, a pressure sensor configured to capture data indicative of the internal pressure of the accumulator, and a processor configured to actuate the hydraulic pump to increase the internal pressure of the accumulator if the internal pressure of the accumulator, as indicated in data captured by the pressure sensor, falls below a threshold pressure.
Abstract:
Le moteur-pompe hydraulique (1) à cylindrée fixe ou variable comprend un rotor centrai de moteur-pompe (3) dans loquet et aménagé un cylindre hydraulique (14), ledit rotor (3) étant en contant étanche avec un distributeur d'entrée-sortie (43) relient ledit cylindre (14) avec un bâti de moteur-pompe (2) tandis qu'un piston hydraulique (13) se meut dans ledit cylindre (14) peur pousser au moyen d'un poussoir guide de piston hydraulique (18) d'un bras tangentiel (22) articulé dans ledit rotor central (3) et d'un rouleau antifriction de bras tangentiel (28) sur un rotor périphérique de moteur-pompe (29) synchronisé en rotation aven le rotor central de moteur-pompe (3).
Abstract:
A pyrotechnic pressure accumulator includes an elongated body extending from a first end of a pyrotechnic section to a discharge end of a hydraulic section. A propellant charge located in a gas chamber of the pyrotechnic section, a piston movably disposed the hydraulic section, and a fluid disposed in a hydraulic chamber between the piston and the discharge end, wherein the fluid is exhausted under pressure through a discharge port in response to ignition of the propellant charge.
Abstract:
An accumulator (100) for a hydraulic system, wherein the accumulator (100) comprises a liner (110), a piston (140) and a housing (200), that defines a pressure chamber (PC), for receiving hydraulic fluid at high pressure, wherein the piston (140) is biased towards an end position of the pressure chamber (PC) for interacting with the hydraulic fluid in the pressure chamber (PC), and the piston (140) is movable in a predetermined range for accumulating hydraulic fluid. The accumulator has at least one outlet port (111) in a sidewall (112) of the liner (110), which outlet port (111) is covered by the piston (140) in the predetermined range and is uncovered when the piston (140) has moved a predetermined distance from the end position. A hydraulic system is also provided that comprises the above accumulator and an all-wheel drive system comprising the above hydraulic system. A method for de-airing an accumulator according to above is also provided.
Abstract:
Die Erfindung betrifft einen Hydrospeicher, insbesondere Blasenspeicher, mit einem Gaseinlasskörper (12), der mit Teilen des Speichergehäuses verbindbar ist und der mindestens eine Anlagefläche (28) für ein elastisch nachgiebiges Trennelement (16) aufweist, das innerhalb des Speichergehäuses angeordnet zwei Räume voneinander trennt, wobei das Trennelement (16) unter Bildung eines Befestigungsrandes für die jeweilige Anlage mit der zugeordneten Anlagefläche (28) des Gaseinlaßkörpers (12) eine Randverstärkung (30) durch Materialverdickung aufweist. Dadurch, dass die Randverstärkung (30) auf ihrer dem Gaseinlasskörper (12) zugewandten Seite mit einer konvexen Füh rungsfläche versehen ist, die in Anlage ist mit der zuordenbaren An lagefläche (28), die für die dahingehende Anlage zumindest teilweise konkav ausgebildet ist, sind trotz hoher Beanspruchung des Trennelementes im Arbeitsbetrieb des Speichers Versagensfälle an der Stelle der Befestigung des Trennelementes mit dem Hydrospeicher vermeiden.
Abstract:
Die Erfindung betrifft einen Hydrospeicher, insbesondere Blasenspeicher, mit einem Gaseinlasskörper (12), der mit Teilen des Speichergehäuses (10) verbindbar ist und der mindestens eine Anlagefläche (28) für ein elastisch nachgiebiges Trennelement (16) aufweist, das innerhalb des Speichergehäuses (10) angeordnet zwei Räume (18, 20) voneinander trennt, wobei das Trennelement (16) unter Bildung eines Befestigungsrandes (26) für die jeweilige Anlage mit der zugeordneten Anlagefläche (28) des Gaseinlasskörpers (12) eine Randverstärkung (30) durch auf ihrer dem Speichergehäuse (10) zugewandten Seite eine zusätzliche Verstäkung (36) aufweist, die in zusammengebautem Zustands des Speichers in pressender Anlage zwischen mindestens einer der Anlageflächen (28) des Gaseinlasskörpers (12) und den zuordenbaren Wandteilen des Speichergehäuses (10) ist, sind trotz hoher Beanspruchung des Trennelementes im Arbeitsbetrieb des Speichers Versagensfälle an der Stelle der Befestigung des Trennelementes mit dem Hydrospeicher vermieden.