| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sludge scraper which prevents an endless chain from coming off from a rotating wheel even when an earthquake occurs. <P>SOLUTION: The sludge scraper includes: the endless chain 11 which travels on a circumferential track in which a scraping track T1 along a basin bottom part 1d and a water surface track T4 extending on a water surface side are connected; sprockets 14, 15 which are arranged on both end parts of the water surface track T4 and rotate with a part of the endless chain 11 hooked; and a guide member 9 which is arranged in a periphery of a part of the endless chain 11 located on the water surface track T4. The endless chain 11 includes a plurality of projection parts 110a which project to a position overlapping with the guide member 9 in a basin width direction when viewed from above and are arranged along the circumferential track. The guide member 9 is arranged with an interval from the projection parts 110a above the projection parts 110a arranged on a part of the endless chain 11 located on the water surface track T4 between center shafts of the sprockets 14, 15, and has a length longer than the interval of arranging the projection parts 110a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
