我厂负责恒源煤电集团公司所属各矿的综采设备修理任务,每年大修以乳化液为工作介质的矿用液压支架千斤顶4000多根(以下简称千斤顶)。根据中华人民共和国煤炭行业标准《液压支架千斤项技术条件》(MT97-1992)的规定,千斤顶在大修完成后需进行严格的密封性能、耐久性和强度试验,全部合格后才能投入使用。这就需要有一台能够提供较大流 I plant responsible for Hengyuan Coal Mine Group’s mine owned mining equipment repair tasks, overhaul each year with emulsion as the working medium of hydraulic mining jack 4000 more than 4000 root (hereinafter referred to as jack). According to the People’s Republic of China coal industry standard “hydraulic support items technical conditions” (MT97-1992) provides that after the jack overhaul to be strictly sealed performance, durability and strength test, all qualified before they can be put into use. This requires one to provide a larger stream