FIELD: engines and pumps.
SUBSTANCE: proposed hydraulic cylinder is intended for operation in the field conditions at low negative temperatures. The hydraulic drive cylinder incorporates a casing, linked up piston and con rod, rod end and piston chambers. Piston has a through channel, while con rod incorporates built-in remote-control valve and bushing, also provided with through channel. On warming up the hydraulic drive, the said remote-control valve acts on the said bushing to make it move till the hydraulic cylinder rod end and piston chambers are aligned by combining flow passages of the piston and bushing.
EFFECT: reduced heat losses of warmed up hydraulic drive oil.
2 dwg
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| HYDRAULIC DRIVE | 0 |
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SU1060561A1 |
