| 摘要 |
Allocated to the accumulator is a pressure-gas reservation tank to which it is connected via a pressure-gas line 3. Arranged in the pressure-gas line 3 are two non-return valves 7, 8, of which one closes the accumulator 1 and the other closes the pressure-gas reservation tank 2. Each of these two non-return valves 7, 8 is frictionally connected to a control slide 9a, 10a actuated by a cylinder drive 9, 10. The cylinder drives are each connected on the one side via a pressure-oil line 11 to the pressure side of the hydraulic system and on the other side via a pressure-free oil line 12 to the oil tank of the hydraulic system. A branch 4 with a non-return valve 5 and a connection means 6 for a pressure-gas filling device is provided at the pressure-gas line 3. <IMAGE>
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