Conveyor belt scraper

A conveyor belt scraper comprising:

• a shaft extending transversely of a conveyor belt in spaced relation to the surface of the belt to be scraped;
• a plurality of molded, resilient elastomer blade supports mounted on the shaft in a longitudinal array extending across the belt, each blade support secured to the shaft for rotation therewith and each blade support including an integral flexurally resilient elastomer balde mount arm projecting outwardly from the blade support;
• a plurality of scraper blades mounted on the blade mounts of the blade supports, each blade extending into engagement with the surface of the belt;
• and
• torsion bias means, connected to the shaft, resiliently torsionally urging the shaft toward rotation in an angular direction such as to bias the scraper blades into continuing firm engagement with the conveyor belt surface, the torsion bias means comprising:
• a torsion tube of elastomer material encompassing a portion of the shaft and having one end affixed to a fixed frame member;
• first and second rigid collars, each affixed to one end of the torsion tube, the first collar being affixed to the fixed frame member;
• and adjustable link means for connecting the second collar to the shaft to maintain the second collar and the shaft in any one of a plurality of different angular orientations relative to each other to thereby adjust the effective bias force on the shaft.