| 摘要 |
A distribution-pressure unit, operating the hydraulic receivers consisting of a hydraulically controlled distributor and a two-stage, threshold valve characterised in that the threshold valve (Z) is connected with the distributor (R) from the side of the feeding with a channel (26), from the side of the outflow it is connected by the channel (28) and from the controlling side it is connected by the channel (27), where the valve (Z) is connected with the first receiver (I) by the small channel (25) and with the second channel (II) by the small channel (23), and the small channel (24) is connected with the outflow, and the small channel (22) is connected with the supply, and the small channel (21) is connected with the channel (27), which is connected with the chamber (16) situated above the controlling piston (15) of the distributor (R), and the slide (9) of a two-stage, threshold valve (Z) has two radial holes (10, 20), and is hermetically mounted in dished discs (7,8), which have passage channels (22, 23, 24, 25) and, moreover, the slide (9) is supported with springs (11, 12).<IMAGE>
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