| 摘要 |
PROBLEM TO BE SOLVED: To enhance the reliability, easiness and rapidity of the operation of smoothing a tunnel wall surface by scraping away irregularities of concrete. SOLUTION: This scraper for a support comprises: a scraper body 1 for scraping away concrete C1; and a supporting body 2 which has a supporting portion 2A for swingingly supporting the scraper body 1, and a connecting portion 2B for mounting it to operating equipment. COPYRIGHT: (C)2008,JPO&INPIT
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