Segmented Roll Assembly and Stopping Device for a Segmented Roll

A stopping device for a segmented roll in a fiber-web machine for braking rotation of at least one roll segment of the segmented roll, comprising:

• at least one braking device operable to stop a roll segment;
• at least one surface contact member, which surface contact member is connected to said braking device;
• and
• at least one actuator for bringing the surface contact member into and out of surface contact with the at least one roll segment.

A segmented roll assembly for a fiber-web machine, comprising:

• a segmented roll having a plurality of independently from one another rotatable roll segments that are located end-to-end substantially in a transverse direction defined by the fiber-web machine, the plurality of roll segments having mating surfaces between said end to end roll segments;
• at least one stopping device for braking rotation of at least one roll segment of the segmented roll, said stopping device further comprising:
• at least one stopping head, having at least one braking device operable to stop a roll segment, and a surface contact member, which surface contact member is connected to said braking device;
• and
• at least one actuator for bringing the surface contact member into and out of surface contact with a shell of the at least one roll segment.

A segmented roll assembly for a fiber-web machine, comprising:

• a segmented roll having a plurality of rotatable roll segments, each roll segment having a shell and a shell surface, the roll segments arranged end-to-end along the segmented roll, the plurality of roll segments having mating surfaces between the end to end roll segments;
• at least one stopping device for braking rotation of at least one roll segment of the segmented roll, said stopping device further comprising:
• a stopping head having a body, a wheel mounted for rotation on a shaft to the body, the wheel having an outer contact surface substantially parallel to the shell surface, and a braking device in braking relation between the body and the wheel;
• wherein the body is mounted to a support beam on the fiber-web machine by an actuator which is arranged to move the body and the wheel mounted thereto toward the segmented roll to bring the outer contact surface into engagement with the shell surface.