Tensioning mechanism for clamping a pre-loaded spring of a spring-loaded accumulator drive
AssigneeSiemens Energy Global GmbH & Co. KG
InventorFriedrich Loebner
Life of this patent
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Abstract
A tensioning mechanism for tensioning a pre-loaded spring of a spring-loaded accumulator drive. The tensioning mechanism includes a tensioning wheel coupled to the pre-loaded spring, an intermediate shaft coupled to the tensioning wheel, an idler gear that can be driven by a clamping motor, a freewheel coupled to the idler gear, a locking mechanism for detachably locking the tensioning wheel in a tensioned state of the pre-loaded spring, and a dog clutch configured to couple the freewheel to the intermediate shaft in order to tension the pre-loaded spring and to uncouple same from the intermediate shaft in the tensioned state of the pre-loaded spring.
Claims12
A tensioning mechanism for tensioning a pre-loaded spring of a spring-loaded accumulator drive, the tensioning mechanism comprising:
- a tensioning wheel coupled to the pre-loaded spring;
- an intermediate shaft coupled to said tensioning wheel;
- an intermediate gear to be driven by a tensioning motor;
- a freewheel coupled to said intermediate gear;
- a locking mechanism for releasably locking said tensioning wheel when the pre-loaded spring is in a tensioned state;
- a dog clutch configured to couple said freewheel to said intermediate shaft in order to tension the pre-loaded spring, and to decouple said freewheel from said intermediate shaft when the pre-loaded spring is in the tensioned state;
- said dog clutch having a first clutch jaw coupled rotationally fixedly to said intermediate shaft, and a second clutch jaw connected to said freewheel, wherein said first clutch jaw is movable between a first end position in which said first clutch jaw bears against said second clutch jaw and a second end position in which said first clutch jaw is separated from said second clutch jaw and which said first clutch jaw assumes when the pre-loaded spring is in the tensioned state;
- and
- a coupling element coupling said first clutch jaw to said intermediate shaft, wherein said coupling element is guided through a transverse opening formed in said intermediate shaft, running perpendicularly to a longitudinal axis of said intermediate shaft, and is movable in said transverse opening parallel to the longitudinal axis of said intermediate shaft between a first position defining the first end position of said first clutch jaw and a second position defining the second end position of said first clutch jaw.
Dependencies are inferred from the claim text.