| 摘要 |
A conveyor belt cleaner and tensioning arrangement (30) for cleaning a conveyor belt including a conveyor belt cleaner (44) and a tensioner (46). The conveyor belt cleaner (44) includes one or more scraper blades (50) mounted on a rotatable cross shaft (48). The tensioner (46) includes a mounting member (90A) attached to the cross shaft (48) for conjoint rotation therewith, a resilient linear biasing member (260) attached to the mounting member (90A), and a linear actuator (284) attached to the biasing member (260). Operation of the actuator member (284) stores a biasing force within the biasing member (260) which in turn rotates the scraper blades (50) into full-face engagement with the conveyor belt with a biasing force. As the scraper blades (50) wear the biasing member continues to rotate the scraper blades (50) into full-face engagement with the conveyor belt with a biasing force that changes in magnitude. The scraper blades (50) include a front surface and a rear surface which are configured and located with respect to one another to provide a blade face surface that extends therebetween having an area which changes as the scraper blades (50) wear, in order to maintain a substantially constant contact pressure between the scraper blades (50) and the conveyor belt as the scraper blades (50) wear during use. <IMAGE> |
