Patent ID: 8656864

Claim:
A safety system for a dung scraping device arranged to push dung on a floor surface ( 11 a ) to a cross channel ( 14 ) located at an end portion ( 11 d ) of the floor surface ( 11 a ), the dung scraping device comprising a dung scraper ( 13 ) operatively connected to a driving mechanism ( 17 , 18 ), the driving mechanism ( 17 , 18 ) controlled to drive the dung scraper ( 13 ) back and forth along the floor surface ( 11 a ) such that the dung scraper ( 13 ) pushes dung on the floor surface ( 11 a ) to the cross channel ( 14 ), the safety system comprising: a height detecting unit ( 20 - 22 , 29 ) arranged to detect the presence of foreign objects having at least a predetermined height (x) above the floor surface ( 11 a ); and an emergency stop device ( 19 , 26 ) arranged to receive information from said height detecting unit ( 20 - 22 , 29 ) and, when the received information indicates that the height detecting unit has detected the presence of a foreign object at the predetermined height (x) above the floor surface, to deactivate said driving mechanism ( 17 , 18 ), automatically emergency stopping the dung scraper ( 13 ) before the dung scraper ( 13 ) pushes the detected foreign object into the cross channel ( 14 ).