Pallet scraper

摘要

A pallet cleaning device used to clean pallets moved from a pallet magazine or supply hopper to the molding section of a concrete block molding machine includes a frame for mounting the pallet cleaning device directly in front of the pallet magazine of the block making machine. A first sub-frame is pivotally mounted on the main frame and is biased by gravity against a stop located on the main frame to establish the position of a set of four pallet scraper blades mounted side by side across the path of a pallet passing beneath the device. A blade holder is pivotally mounted on the sub-frame to locate the scraper blades at an angle; so that they contact the pallet on a line located behind the vertical projection of the pivot mounting of the blade holder on the sub-frame in the direction of travel of a pallet for cleaning. Resilient springs are used to bias the scraper blade holder against a stop engaging the sub-frame to locate the scraper blades. These springs provide a first force perpendicular to the pallet surface at the point of blade contact and a second force in a plane parallel to the pallet surface in the direction of movement of the pallet beneath the cleaning device. The location of the springs relative to the second pivot and the angle at which the blades engage the pallet surface cause the first force to be substantially greater than the second force.