| 摘要 |
PURPOSE: To monitor a supporting roll bearing by making a signal generator operate by a limit value pickup when the bearing arrives at a limit temperature of the bearing to shut off a rolling mill. CONSTITUTION: Heat insulation of a sleeve 11 of the limit value pickup 6 and an air insulating slit 32 between the sleeve 11 and a wall surface 31 of an accommodation hole 10 for the pickup 6 prevent an evil. heat transmission from a cartridge holder 12 to a chock 1. Upon reaching a limit bearing temperature caused by a damage of a roll bearing 7, the expansion of fluid in a cartridge 16 made of glass of the limit value pickup 6, which is effected by thermal action of the bearing 7 and selected in conformity with the bearing limit temperature, causes puncture of the cartridge of glass. In consequence, a lock pin 18 is compressed in the cartridge holder 12 by a compression spring 19, a regulating fin 23 is released from the lock pin 18 and impactively pushed out of the chock body 1 by a tension spring 24, and then an adjusting signal is sent to shut off the rolling mill. |
