专利名称：Pavement removal device null of cover frame for manhole酒店培训课程
发明人：浜田 征次，原園 祥一
申请号：JP特願昭63-149797
申请日：19880617
职业道德素质
电影观后感>pollution可数吗公开号：JP第2668551号B2
公开日：
药品管理
19971027
专利内容由知识产权出版社提供
摘要：PURPOSE:To easily carry out the removing operation of a paved portion without generating noi by lowering a vertically moving member installed on a strut by means of an actuator and pressingly driving a core cutter against the paved portion of the lid frame for a manhole to cut same in a cylindrical shape. CONSTITUTION:A fixed board 11 on which a strut 10 is erected is fixed to the top of a manhole lid 8 by means of magnets 9 and, by adjusting adjusting screw rods 16, each core cutter 19 is positioned on the upper portion of a paved portion 7. Then, by lowering a vertically moving member 12 along the strut 10 by means of hydraulic cylinders 14, 14, the rotary knife of each core cutter 19 is presd against the paved portion 7 and driving motors 18 are driven to give a high-torque rotation to each core cutter 19 via each reduction gear 17 to carry out cutting 7a into a cylindrical shape. Then, by rotating the vertically moving member 12 each time by a certain angle on the strut 10, cutting 7a is equally carried out to remove the whole paved portion 7 from the top of a flange portion 3. Thereby, the removing operation of a paved portion can be carried out very easily while hardly generating noi.
申请人：昭和電線電纜株式会社
功受地址：神奈川県川崎市川崎区小田栄2丁目1番1号
春节食物国籍：JP
代理人：佐藤 幸男 (外1名)更多信息请下载全文后查看博时基金排名
