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AssigneeHeidelberger Druckmaschinen AG
InventorWilli Becker
Estimating the term…
A device for setting a relative rotational position of a gearwheel and a ring gear disposed coaxially mounted and turnable on an annular extension of the gearwheel includes a plurality of radially extending pressure levers actuatable in common by an axially adjustable, centrically disposed adjusting element for releasing a spring-biased positive connection of mutually engaging faces of the gearwheel and the ring gear by reducing the spring bias acting upon the faces, the pressure levers being loosely disposed between the annular extension of the gearwheel and a clamping disc adjacent thereto, the pressure levers being received in radial grooves formed in the clamping disc and being pivotally braced at a first contact region located between the ends thereof against one of the annular extension and the clamping disc, the adjusting element being displaceable over a distance, during a first portion of which the spring bias increases from a relatively low value to a value necessary for maintaining the relative rotational position of the gearwheel and the ring gear and, during a second portion of the distance displaceable by the adjusting element, the spring bias necessary for maintaining the relative rotational position of the gearwheel and the ring gear is at least maintained, and an electric switch connected in a supply-current circuit of a machine drive is actuatable by the element.
Device for setting a relative rotational position of a gearwheel and a ring gear disposed coaxially mounted and turnable on an annular extension of the gearwheel, comprising a plurality of radially extending pressure levers actuatable in common by an axially adjustable, centrically disposed adjusting element for releasing a spring-biased positive connection of mutually engaging faces of the gearwheel and the ring gear by reducing the spring bias acting upon said faces, said pressure levers being loosely disposed between the annular extension of the gearwheel and a clamping disc adjacent thereto, said pressure levers being received in radial grooves formed in said clamping disc and being pivotally braced at a first contact region located between the ends thereof against one of the annular extension and said clamping disc, the adjusting element being displaceable over a distance, during a first portion of which the spring bias increases from a relatively low value to a value necessary for maintaining the relative rotational position of the gearwheel and the ring gear and, during a second portion of the distance displaceable by the adjusting element, the spring bias necessary for maintaining the relative rotational position of the gearwheel and the ring gear is at least maintained, and an electric switch connected in a supply-current circuit of a machine drive is actuatable by said element.
Device for setting a relative rotational position of a gearwheel and a ring gear disposed coaxially mounted and turnable on an annular extension of the gearwheel, comprising a plurality of radially extending pressure levers actuatable in common by an axially adjustable, centrically disposed adjusting element for releasing a spring-biased positive connection of mutually engaging faces of the gearwheel and the ring gear by reducing the spring bias acting upon said faces, said pressure levers being loosely disposed between the annular extension of the gearwheel and a clamping disc adjacent thereto, said pressure levers being received in radial grooves formed in said clamping disc and being pivotally braced at a first contact region located between the ends thereof against one of the annular extension and said clamping disc, the adjusting element being displacable over a distance, during a first portion of which the spring bias increases from a relatively low value to a value necessary for maintaining the relative rotational position of the gearwheel and the ring gear and, during a second portion of the distance displaceable by the adjusting element, the spring bias necessary for maintaining the relative rotational position of the gearwheel and the ring gear is at least maintained, and an electric switch connected in a supply-current circuit of a machine drive is actuatable by said element, said pressure levers having relatively short lever arms between said first contact regions and second contact regions thereof, respectfully, and having relatively long lever arms between said first contact regions and third contact regions thereof respectively, and being in contact with said clamping disc via said first contact regions, respectively, and with an end face of the ring gear facing away from the gearwheel via said second contact regions respectively, said adjusting element being centrically inserted into said clamping disc and said pressure levers being elastically deformable by application of a force from said adjusting element on said third contact regions, respectively, said adjusting element comprising a sleeve having an internal and an external thread and being threadedly mounted in a centric threaded bore formed in said clamping disc, and a bolt mounted in said sleeve and cooperatively connected with said internal thread of said sleeve, said bolt being axially displaceable yet fixed against turning, said third contact region of said pressure levers, respectively, being in contact with a contact surface of a head of said bolt, said external and said internal threads of said sleeve having respective pitches which differ slightly from one another.
Dependencies are inferred from the claim text.