초록 ▼

A bearing for a mill roll is forced to and held in the proper position on the neck of the roll by a clamp-up device that fits around the roll neck between the bearing and a conventional splint hinged ring which serves as a backing for the device. The clamp-up device includes inner and outer rings wh

A bearing for a mill roll is forced to and held in the proper position on the neck of the roll by a clamp-up device that fits around the roll neck between the bearing and a conventional splint hinged ring which serves as a backing for the device. The clamp-up device includes inner and outer rings which together form an annular fluid chamber, and when this chamber is pressurized, the outer ring extends, forcing the bearing to its proper position on the roll neck. Within the chamber, each ring is provided with ramps which align and come against each other when the outer ring is turned to the proper angular relationship with respect to the inner ring, and when the outer ring is so disposed it will remain axially extended to hold the bearing in its proper position on the roll neck during operation of the mill roll. A locking plate is provided to lock the rings against rotation relative to each other once they are in the proper angular relation. The clamp-up device is particularly useful in connection with bearings designed to fit tightly over tapered roll necks.

대표청구항 ▼

A clamp-up device for installing and holding a bearing on a shaft, such as the neck of a mill roll, said clamp-up device comprising: first and second rings adapted to fit around the shaft such that the first ring is prevented from moving off of the shaft while the second ring is free to move axially

A clamp-up device for installing and holding a bearing on a shaft, such as the neck of a mill roll, said clamp-up device comprising: first and second rings adapted to fit around the shaft such that the first ring is prevented from moving off of the shaft while the second ring is free to move axially toward the bearing on the shaft, one of the rings being capable of rotating relative to the other of the rings, the first and second rings each having a generally radially directed wall surface and a generally axially directed wall surface, and the radially and axially directed wall surfaces of the two rings together defining an annular chamber which circumscribes the shaft and is otherwise arranged such that when it is pressurized with a fluid, the second ring will be urged axially toward the bearing so as to exert an axially directed force on the bearing and thereby move the bearing to its operating position on the shaft, each of the rings on its radially directed wall surface further having a ramp which will align with the ramp on the other of the rings when the rings are in the proper angular position relative to each other, the ramps further being configured to force the second ring away from the first ring upon relative rotation of the one ring relative to the other ring in the proper direction so as to hold the bearing in the operating position to which it is forced by the pressurized fluid; a first seal element located along the axially directed wall surface of the first ring to form a barrier between that wall surface and second ring; and a second seal element located along the axially directed wall surface of the second ring to form a barrier between that wall surface and the first ring.