Drive device for a protective hood and method for adjusting a protective hood
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJulius Janssen, Klaus Sattler, Jan Hofmann
Life of this patent
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Abstract
A drive device for a protective hood of a machine includes a counterweight, a pulling means connecting the protective hood to the counterweight, a motor, and a freewheel. The freewheel connects the motor to the pulling means and is arranged to block when a weight force of the protective hood is greater than a weight force of the counterweight. The freewheel may be a linear freewheel or the freewheel may operate between two rotatable elements. The freewheel may be a frictionally locking freewheel or a positive locking freewheel.
Claims18
A drive device for a protective hood of a machine, comprising a motor, which cooperates with a pulling means via a freewheel, the pulling means being loaded on one end by a weight force of the protective hood and on its other end by a movable counter weight, wherein the freewheel is designed in such a way that it is blocked by a positive weight force difference between the protective hood and the counter weight.
A method for the motorized adjustment of a protective hood of a machine which is partially relieved by a movable counter weight, comprising:
- connecting a freewheel between a motor and the protective hood;
- and
- blocking the freewheel;
- and
- raising and lowering of the protective hood via a belt loaded on one end by a weight force of the protective hood and on its other end by the counter weight.
A drive device for a protective hood of a machine, comprising:
- a movable counterweight;
- an open toothed belt connected to the protective hood at one end and to the counterweight at an opposite end;
- a motor;
- and
- a freewheel connecting the motor to the pulling means and arranged to block when a weight force of the protective hood is greater than a weight force of the counterweight.
Dependencies are inferred from the claim text.