FIELD: machine building.
SUBSTANCE: housing (36), 136) of cylinder of hydraulic (pneumatic) cylinder (20, 20A, 120, 120A) includes: switching valve (24, 124), check valve (30, 130), channel (60, 62, 64, 68, 80), which at second position of switching valve (24, 124) provides high pressure air supply source (26, 126) communication with cylinder chamber (42, 142) on head side and communication of outlet port (28, 128) with cylinder chamber (44, 144) on rod sides, and channel (60, 62, 64, 72, 74, 80), which at first position of switching valve (24, 124) provides communication of cylinder chamber (42, 142) on head side with cylinder chamber (44, 144) on rod sides and outlet port (28, 128).
EFFECT: technical result is energy saving, reduced time of piston return and reduced dimensions of hydraulic (pneumatic) cylinder.
12 cl, 16 dwg
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