| 摘要 |
<p>The hydraulic unit for manual hoisting devices contains hydrogenerator, the differential piston (1) of which has the working spaces (a, b) being connected by one-way valve (6) placed in the differential piston (1). The first working space (b) is connected to the vessel (2) for working liquid (11, 14) via the controlled one-way valve (7). The second working space (a) is connected to the branches (8, 9, 12) via the one-way valve (5) with the working cylinder (3). The controlled one-way valve (7) is regulated with the use of the pressure closed to working cylinder (3), via the branch (8) and the auxiliary branch (10). The vessel (2) for working liquid is connected with the other branches (8, 9, 12) via the auxiliary one-way valve (4) and via the auxiliary branch (13).</p> |
