摘要:
Es wird eine Knickstabiliserung einer rohrförmige Kolbenstange für einen Arbeitszylinder beschrieben, die mit geringem Aufwand und kostengünstig herstellbar ist, wobei die Kolbenstange innerhalb der elastischen Bereichs nach der Eulerschen Knicktheorie knickstabil ist. Erfindungsgemäß ist in der Kolbenstange (5), an der mit dem Kolben (4) verbundenen Seite, ein mit dieser kraft- und formschlüssig verbundenes Stabilisierungselement (9) angeordnet, dessen Länge in Abhängigkeit von einer Länge L, als Knicklänge zwischen einem linken Gelenkpunkt (10) eines linken Gelenkkopfs (11) an der Kolbenstange (5) und einem Punkt S, als virtueller Wendepunkt einer näherungsweise sinusförmigen Biegelinie (6) auf einer Hauptachse (7) des Arbeitszylinders, ein Viertel bis die Hälfte der Länge L, vorzugsweise ein Drittel beträgt.
摘要:
An improved scotch yoke engine of pump including a piston joined to a yoke structure wherein the piston (1) is free to move along at least one axis defined by a flying cross (60) relative to the yoke structure (7) during piston reciprocation, the piston and yoke structure being joined in a flat type joint arrangement and the piston prevented from rotation around the piston axis by engagement of the piston and the yoke with the flying cross, the flying cross being not locked in position between the piston base (50) and the yoke shank end arrangement (700).
摘要:
A mounting assembly (3) for connection of a drive mechanism to an engine (2). The engine (2) includes pistons, an engine block (5) and an output shaft (80). The assembly (3) includes a drive mechanism, connecting rods (4) and a pedestal (11), whereby the assembly (3) is mounted to the engine block (5) and the rods (4) are inserted into the cylinders. The pistons are then secured to the connecting rods (4). The pedestal (11) includes means to locate the assembly (3) on the engine block (5). The drive mechanism is preferably a wobble yoke with two beams (9), two lower yokes (60, 61) and a universal cross component. The pedestal (11) is secured to the block (5) through openings in the yoke.
摘要:
Einrichtung zum Spritzgießen von Kunststoff in eine aus zwei Formhälften (8, 9) gebildete Form, wobei eine Formhälfte (9) auf einer bewegbaren Formaufspannplatte (7) angeordnet ist und die den Schließdruck auf diese Formaufspannplatte (7) aufbringende Kolbenstange (1) an der Bewegung der Formaufspannplatte (7) teilnimmt und dabei mit ihrer Außenseite an der inneren Dichtung (17) eines feststehenden Zylinderrohres (3) gleitet, wobei die gegossene Kolbenstange (1) in dem mit der Dichtung (2) des Zylinderrohres (3) in Berührung kommenden Bereich mit einem harten Überzug aus einem anderen Material versehen ist.
摘要:
A connecting rod as a shaft clamping member includes a rod member and cap, each of which has mating faces at circumferentially opposite ends of a semi-circular recess and which are fastened to each other by bolts by matching the opposed mating faces to each other to define a crank pin hole by the two semi-circular recesses. The rod member and the cap are forgings formed from an aluminum alloy and simultaneously produced by forging powder preforms of the rod member and cap in a cavity having the desired shape of the connecting rod. After forging, the opposed mating faces have an infinite number of recesses and projections which are formed from the flow of the material during the forging and which are in a matched and fitted relation to each other. Thus, any misalignment between and in a direction parallel to the mating faces can be prevented to avoid the generation of a situation that only the rod member receives a stress. This achieves a prolongation in the life of the connecting rod of the aluminum alloy. The composition of the most desirable aluminum alloy include, by weight, 7 % ≦ Fe 15 %, 1 % Si 4 % and between 1 % and 3 % of a metal selected from Ti, Zr, Mn, Ni, Cr, V, Mg and Mm (Misch metal) with the balance Al. The preferred forging temperature is between about 550°C and 650°C.
摘要:
The invention relates to a working cylinder comprising a cylinder unit with a front end part (4), a rear end part (15) and a cylinder tube (12) connecting these end parts, a piston (5) movable in the cylinder tube (12) and a piston rod (1) secured to the piston and extending through the front end part (4). The purpose is to provide a novel, simple solution for securing the cylinder tube (12) to the end parts (4, 15). Each end part (4, 15) has a shoulder (18, 16), the cylinder tube (12) being connected to each end part (4, 15) by means of a compression ring (13, 14) which upon deformation of the end of the cylinder tube (12) and by means of said end tightly clamps the end shoulder (18, 16).
摘要:
I@ Fluid actuator (1) includes a piston rod (3) comprised of a wound filamentary composite structure to provide an extremely light weight, relatively low cost, envelope efficient design. Attached to the piston rod (3) are one or more non-integral piston heads (14, 16) which are preloaded against one or more ramp surfaces (26, 27 and 43) on the exterior of said piston rod. A pair of oppositely facing ramp surfaces (26, 27) may be formed on the piston rod (3) by interspersing filler means (21) between the piston rod fiber layers (20). Another ramp area (43) may be formed by providing an external groove (40) in the piston rod (3) which is engaged by longitudinally split support shoes (41) that provide an attachment surface for a detachable piston head (16). An internal ramp (50) may also be provided on the inner diameter of the piston rod (3) adjacent the axial outer end thereof for mating engagement by a conically ramped exterior surface (52) on an internal metal stud (51) used to attach a rod end assembly (5) to the axial outer end of the piston rod. The internal ramp (50) may be formed by radially displacing the layers of piston rod fibers (20) radially inward by interspersing circumferential fiber windings (21) therebetween.