| 摘要 |
The two-level constant supply power regulator for a hydraulic system, comprising a two-stage overflow valve made up of a master valve and a preliminary valve, and an electromagnetic distributor, consisting in that between the preliminary valve (II) and the electromagnetic distributor (IV), it has a logic slide valve (III) made up of a body (1), in which the slide (2) rests on a spring (3) fitted into a plug (4), whereas under that plug, a chamber (5)is located, and on the other side of the slide (2), there is a line (6) conveying the oil pressure signal from the pump (P2), under which a chamber (7) is formed, a coaxial opening (8) being made on the slide (2), which connects the chamber (5) through radial openings (9) with the neck on the cylindrical surface forming a chamber (10), beside which, on the side of the spring (3), another neck forming a chamber (13) is made, whereas in the body (1) there are openings (12, 14, 15) allowing for cooperation of the logic valve (III) with the electromagnetic distributor (IV) and openings (11, 16, 17) connecting with the preliminary overflow valve (II).<IMAGE>
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