摘要:
Eine Stellvorrichtung (1) ist mit einer drucksteifen Antriebskette versehen, (3) deren Laschenteile aufweisende und durch Gelenkteile verbundene Kettenglieder (4) mittels eines angetriebenen Kettenrades (5) in eine drucksteife Stellung verlagerbar und aus dieser rückholbar sind. Die eine regelmäßige Reihe bildenden Kettenglieder (4,4',4'') weisen erfindungsgemäß jeweils zwei Schwenkelemente (6,7) auf, die in Kettenlängsrichtung sowohl zwischenliegend als auch zum nebengeordneten Kettenglied hin jeweilige Gelenke in Form von komplementär aneinanderlegbaren Gleitflächen mit Bogenkontur (8) bilden. Dabei ist an zumindest einem der beiden Schwenkelemente (6,7) je Kettenglied ein Antriebsglied vorgesehen, mit dem die Schwenkelemente (6,7) mittels eines Verzahnungsprofils am Kettenrad (5) in eine drucksteife Stellung verlagerbar und aus dieser rückholbar sind.
摘要:
The push actuator (10) has a fixed base (12) which rotatably carries a selectively rotatable rotor (44, 46, 48, 50). A horizontal band (24) has a lower portion stacked in a helical pattern and has an upper portion engaged by the upper portion of a vertical band (30), to form a vertical telescopic column (32). The lower portion of the vertical band (30) is stacked in a spiral, separately from the horizontal band (24), the horizontal band (24) is supported on the rotor (44, 46, 48, 50) with a helical ball support track (70) along which a number of balls (72) can roll and slide, to allow substantially frictionless rotation of the rotor member (44, 46, 48, 50) while the horizontal band (24) remains rotatably stationary. A ball re-circulation unit (76) allows the balls (72) to circulate between the top of the track (70a) and the bottom of the track (70b). Upon rotation of the rotor (44, 46, 48, 50), the vertical column (32) is formed by the horizontal band (24) being lifted and its turns being spaced through its engagement on the rotating helical ball support track (70), and by each turn of the vertical band (30) being inserted between two vertically successive turns of the horizontal band (24).
摘要:
Provided is an interlocking chain-type forward and backward actuating device, the device being configured so that an increase in the number of parts is minimized, an increase in the size of the device is avoided, the amount of scattering of lubricating oil to the outside of the device is reduced, the wear of connection pins is reduced, the breakage of the connection pins is avoided, and the striking noise and vibration of the chains occurring during the reception of the chains are reduced. Chain guide plates (130) are respectively provided on both sides of a pair of interlocking chains (110, 110) in the chain width direction (W). Chain locus restriction members (140, 140) having chain locus restriction faces (S1, S1) in contact with rigid chain portions (110B, 110B), which are made rigid by engaging and integrating the pair of interlocking chains (110, 110) with each other, are disposed so as to be adjacent to the rigid chain portions (110B, 110B).
摘要:
Pair of engagement chains (100) whose buckling strength is improved, which realizes stable forward and backward driving for a work without requiring to install an auxiliary guide means for suppressing buckling and inclination of the engagement chains (100) and whose backlash prone is eliminated. The pair of engagement chains (100) has inner tooth plates (110), bushes (120), outer tooth plates (140) and connecting pins (150) and is integrated by engaging hook portions of the inner tooth plates (110) and hook portions of the outer tooth plates (140), respectively, and is branched by disengaging the hook portions of the inner tooth plates (110) and the hook portions of the outer tooth plates (140), respectively. The pair of engagement chains (100) further includes inflection restricted plates (170) having inflection restricted surfaces (171) and inflection restricting plates (180) having inflection restricting portions (181) that are connected on the both ends of the connecting pins (150).
摘要:
Dispositif d'entraînement des maillons d'une chaîne de poussée caractérisé en ce que les galets de roulement (11) sont montés sur le pignon rotatif (8) autour d'axes (12) parallèles aux axes d'articulation (4, 4') des maillons (2) et coopèrent avec ces axes lorsque ceux-ci sont logés dans les creux séparant les dents (13) du pignon rotatif (8).
摘要:
A hoisting mechanism comprises a pole (1) with weight and build-up branches (2, 3) and carrying elements (4) in these branches (2, 3), and a mechanism (6) for moving the carrying elements (4) in the branches (2, 3) from one such branch to the other. The mechanism (6) includes a hydraulic cylinder (8) with two pins (12, 13), two pairs of pivotable stops (17, 18), a guide (30), and two pushers. Axes (19) of oscillation of the stops (17, 18) are positioned in their centers of gravity, whereas the guide (30) has the form of an oval cup (31) secured to a housing (7) of the mechanism (6), has a slot (33) in a bottom (32) and holes (37) in the side wall to receive the push. ers.
摘要:
A fluid pressure operated push beam is disclosed which comprise a plurality of similar rigid open-ended tube sections (1) articulated in head-to-tail relationship around hinge pins (3) perpendicular to a longitudinal median plane of the push beam (10). A number of plates (2) corresponding to the number of hinge pins (3) are each connected for tilting movement to one of the hinge pins (3), with the plate portions situated on either side of the hinge pins (3) disposed in the tubular section (1) located on the corresponding side, and having a width smaller than the width of the section (1). An inflatable hose, such as an inner-arc hose, which may be segmented, said hose having a length shorter than the total length of the series of sections but exceeding the distance between the outer or outermost hinge pins is provided within the series of sections to extend in longitudinal direction in the space on the same side of the hinge pins (3). The hose has closable supply means for a pressure fluid operative for inflating the hose.