| 摘要 |
A double acting hydro-pneumatic pump comprising a casing (1) in which are coaxially mounted a pneumatic cylinder (2) with a piston (3) there in and two hydraulic cylinders (4, 5) with rods (6, 7). The rods (6, 7) and the piston (3) are provided with hollows. One rod (6) is fixed to the piston (3) so that it ensures interconnection of the hollows of the rods (6, 7) and forms, together with the casing (1), a hydraulic cylinder (4). The other rod (7) is fixed on the casing (1), penetrates into the hollow of the rod (6) from the side of the piston (3) and has a length which is not less than the stroke of the piston (3). The rod (7) serves as a fixed link for the other hydraulic cylinder (5), the rod (6) being a movable link of that cylinder (5). |
