R. Stahl Fordertechnik Gmbh

Kci Konecranes International Plc

Helmut Noller

Manfred Finzel

Anita Schmiedt

Ismo Kuivamaki

Richard M&uuml;ller

Reiner Buhlmayer

Richard Muller

Reiner B&uuml;hlmayer

In a rope hoist ( ), the rope drum ( ) is rotatably mounted in a roughly C-shaped frame ( ). To mount the rope drum ( ), an appropriate bearing arrangement ) is provided at one side, whereas at the other side the mounting of the rope drum ( ) is effected solely via the output shaft ( ) of the gearing ( ). Distortions in the frame ( ) on account of unavoidable alignment errors are absorbed by the torsionally nonrigid frame ( ).

Rope hoist with elastic frame

In a rope hoist ( ), the output shaft ( ) of the gearing ( ) is provided in one piece with an end plate ( ). This end plate ( ) is designed in such a way that it can be inserted into a locating seat ( ) of the tubular rope drum ( ). The end plate ( ) is screwed in the rope drum ( ) by means of radial fitting screws ( ). There is also a recess ( ) at the other end of the rope drum ( ), and a similar end plate ( ) can be fastened in this recess ( ) in the same manner. This other end plate carries a bearing journal ( ). On account of this arrangement, the manufacture of the rope drum ( ) and the entire assembly are simplified, complicated shaft joints between the output shaft ( ) and the rope drum ( ) being dispensed with on account of the mounting of the rope drum ( ) by means of the output shaft ( ) of the gearing ( ). In addition, the rope hoist ( ) may be split up into comparatively small subassemblies for dispatch.

Cable control with a simplified assembly

In an electric chain hoist, there is a slipping clutch in the drive line which connects the electric motor to the chain sprocket, the slipping clutch acting as an overload safeguard. A holding brake is also provided to hold the drive line in the braked state when the motor is switched off. The brake exerts its braking action primarily on that part of the drive line which lies between the slipping clutch and the chain sprocket. To prevent the slipping clutch from entering the slipping state when the motor is switched on before the brake has been released to a sufficient extent, the brake is designed in such a way that it acts on both parts of the drive line.

Chain hoist with a brake acting on both sides of the clutch

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Uttenhofen, Germany

Helmut Noller