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单体液压支柱活柱体可拆卸加长装置——川煤科技信息，１９９３（５）：８～９。芙蓉煤务局机电高级工程师陈大睿设计的矿用单体液压支柱活柱体可拆卸加长装置，最近获国家实用新型专利。专利号９２２１４１７６．２。本实用新型专利公开了一种矿用单体液压支柱下件，能在...
Single hydraulic column movable column detachable extension device - Chuan Coal Science and Technology Information, 1993 (5): 8 ~ 9. Furong Coal Bureau senior mechanical and electrical engineer Chen Dairui design of single-column mining hydraulic prop cylinder removable extension device, the recent national utility model patents. Patent No. 92214176.2. The utility model discloses a mining unit hydraulic prop under the piece, capable of ...