Abstract:
Die Erfindung betrifft einen hydropneumatischen Druckspeicher (1) mit einem aus zumindest zwei miteinander verbindbaren Gehäuseschalen (3, 5) gebildeten Gehäuse, wobei zumindest der Endbereich der einen Gehäuseschale (5) zwischen ihrem freien Ende und einem Dichtelement eine trichterartig nach aussen erweiterte Führungsfläche für das Zusammenfahren der beiden Gehäuseschalen (3, 5) aufweist und wobei an zumindest einer Haltefläche zum Erzeugen einer auf den Randbereich (21) der Membran (13) wirkenden Spannkraft zumindest ein elastisches Dichtelement (41) vorgesehen ist. Hierdurch ergibt sich ein vereinfachter Zusammenbau mit verbesserter Dichtwirkung in den kritischen Verbindungsbereichen des Druckspeichers.
Abstract:
Hydropneumatischer Druckspeicher mit einem Speichergehäuse (1) und einer darin befindlichen, ein bewegliches Trennelement zwischen einem ersten Raum, insbesondere Gasraum (7), und einem zweiten Raum, insbesondere Flüssigkeitsraum (5), bildenden Membran (3), die mehrere Ringbereiche (31, 33, 35, 37, 39) aufweist, die über ringförmige, in der Art von Gelenken wirkende Schwachstellen (61, 63, 65, 67, 69, 71) miteinander der verbunden sind, wobei die Ringbereiche (31, 33, 35, 37, 39) an der von der Wand des Speichergehäuses (1) abgewandten Innenseite der Membran (3) Erhebungen (81, 83, 85, 87, 89) aufweisen, die im Zentralbereich zwischen benachbarten Schwachstellen die größte, die Wandstärke der Membran (3) vergrößernde Höhe und eine zu diesen Schwachstellen hin jeweils flach abfallende und zumindest in Teilbereichen konvexe Form (91, 93) besitzen.
Abstract:
The invention relates to a vehicle braking system comprising a gas hydraulic accumulator (10) with a housing (12), whose interior is divided by metal bellows (16) into a gas-filled gas chamber (20) and a fluid chamber (22). A pressurised fluid can be supplied to and conveyed from said fluid chamber (22) via a supply line (24). A valve assembly (74) is provided between the fluid chamber (22) and the supply line (24), which closes if the pressure in the supply line (24) falls below a minimum value and opens if the pressure exceeds said minimum value. In to order to increase the operating security of the gas hydraulic accumulator (10), the valve assembly (74) closes if the pressure in the supply line (24) exceeds a maximum value and opens if the pressure falls below said maximum value.
Abstract:
The invention relates to a hydropneumatic accumulator comprising a bellow (19), which, inside the accumulator housing (1), separates a gas chamber (17) from an oil chamber (13) and which is fastened with one end thereof to the accumulator housing (1) so that the oil chamber (13) is delimited by the inside of the bellow (19). Said bellow is sealed on the other free end by means of a closing body (21) that moves according to changes in volume of the gas chamber (17) and of the oil chamber (13). The hydropneumatic accumulator also comprises a valve (31), which enables a hydraulic fluid to flow out of and into the oil chamber (13) or which blocks the flow of said hydraulic fluid. The valve can be transferred into its blocking position by the closing body (21) when the closing body (21) undergoes a movement corresponding to an increase in the volume of the gas chamber (17) that exceeds a predetermined maximum value. Said closing body is provided in the shape of a trough (21) which, with its edge (25) located on the open end (23), is connected to the assigned free end of the bellow (19). The trough (21) extends with its lateral wall (27) along the inside of the metal bellow (19), and the bottom (35) of the trough (21) is configured as a moveable valve element of the valve (31) that controls the flow of hydraulic fluid.
Abstract:
The invention relates to a pressure means storage device, comprising a housing (1), the inside of which is divided into two chambers (3, 4) by a media separation element (2). The first chamber (3) is filled with a gas and the second chamber (4) is filled with a liquid. A bottom valve (6) which allows the second chamber (4) to be filled with the liquid and prevents said second chamber (4) from being completely emptied is provided in a hydraulic connection (5), the closing body (7, 40) of said valve being activated by the media separation element (2). According to the invention, the closing body (7, 40) can be moved by means of the media separation element (2 or 16) into a position in which it performs the function of a hydraulic piston. This prevents the bottom valve from being damaged and any unwanted leakage of the liquid, hereby considerably increasing the functional reliability.
Abstract:
The invention relates to an accumulator (1) with a large volume inner space (3), especially an adjustable low pressure accumulator, in which a device (11) which separates the fluid area from the gas area is provided. Said device (11) contains submerging floating bodies (17, 19) arranged on the upper surface of the fluid volume (33) and are in the fluid level (35) itself. In addition, the separating device (11) contains at least one protecting body (21) which interacts with the floating bodies (17, 19) and is configured as a shield for further reduction of the contact surface between gas and fluid. The protecting body (21) and the floating bodies (17, 19) are constructed in such a way that they can be mounted inside the inner space (3) of the accumulator (1) through an inspection opening (9).
Abstract:
The present invention provides a Type 3 pressure vessel comprising a polar boss that is attached to a metallic liner and provides reinforced static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance of the liner orifice or neck region. In particular, the material of the polar boss has higher static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance relative to that of the liner material.
Abstract:
An apparatus for determining the weight of a payload (44) in a bucket (24) of a machine (20) where the bucket (24) is attached to a chassis (26) of the machine (20) by a linkage. The apparatus comprises an energy storage device (82) for storing potential energy of the bucket (24), payload (44), and linkage when the bucket (24) is moved from a first suspended position to a second suspended position. A mechanism (86) provides physical data corresponding to a physical change in the energy storage device (82) caused by storage of the potential energy and a processor (116) calculates the weight of the payload (44) using the physical data.
Abstract:
Eine Führungseinrichtung für einen Metallbalg (3), der an zumindest einem Balgende (37) einen bei Ausziehen und Zusammenziehen des Balges (3) entlang der Wand eines Gehäuses (10) bewegbaren Endkörper (39) aufweist, wobei zwischen diesem und dem Gehäuse (10) ein Führungselement vorhanden ist, ist dadurch gekennzeichnet, dass das Führungselement durch eine Mehrzahl gesonderter, in Abständen voneinander am Umfang des Endkörpers (39) angeordneter Führungskörper (49) gebildet ist.