Security coupling in particular for main drivetrains on...

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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Details

F16D 7/02 (2006.01) F16D 1/08 (2006.01) F16D 3/06 (2006.01)

Patent

CA 2547387

The invention relates to an overload security coupling, in particular for main drivetrains on rolling stands, forming a bridge between a toothed spindle section (1) and a spindle section (6), with an interference fit. According to the invention, the security coupling for axial overload may be combined with a rotational fixing against torsional overload, whereby the same is embodied with a rotating sliding sleeve (3), housing the spindle section (1) with internal toothing in an axially-displaceable manner at one end and enclosing the spindle section (6) with an inner sleeve (4) in the interference fit at the other end and the rear sleeve-like projection (13) thereof generates a fixed frictional connection which gives way in case of overload with a pressure sleeve (5) and a pressure gap (14), tensioned by pressure medium. In order to combine the security coupling of axial overload with a rotational fixing of torsional overload, the spindle section (1) is embodied with a fixed bearing point (2) and the spindle section (6) is embodied with a movable bearing point (8).

L'invention concerne un accouplement de sécurité anti-surcharges, en particulier pour les transmissions principales de cages de laminoir, lequel forme un pont entre une partie de broche à denture (1) et une partie de broche à ajustement serré (6). Pour que cet accouplement de sécurité anti-surcharges axiales soit combiné à un blocage en rotation anti-surcharges de torsion, il est pourvu d'une douille coulissante tournante (3) qui, à une extrémité, reçoit la partie de broche à denture intérieure (1) de façon qu'elle puisse se déplacer axialement et, à l'autre extrémité, entoure la partie de broche (6) avec une douille intérieure (4), avec ajustement serré, et dont la saillie arrière (13) en forme de douille forme, avec une douille de pression (5) et une fente de pression formée par un liquide de pression, un assemblage par friction solidaire en rotation qui cède en cas de surcharge. Pour que cet accouplement de sécurité anti-surcharges axiales soit combiné avec un blocage en rotation anti-surcharges de torsion, la partie de broche (1) est pourvue d'un point de support fixe (2) et la partie de broche (6) est pourvue d'un point de support mobile (8).

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