| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to pile drives used for submersion of piles, casing pipes and other elements into soil. The mechanism of pile driver mast correction comprises a drain and discharge manifolds, two hydraulic cylinders, each driven by a three-position hydraulic distributor, control cavities of which are connected to outlets of "or" valves, a four-position control unit, outlet channels of which are connected to inlet channels of "or" valves. Two of control unit positions correspond to the position of hydraulic distributors, in which the working fluid from the discharge manifold arrives to the piston cavity of one of the hydraulic cylinder and into the stem cavity of the other hydraulic cylinder, and the stem cavity of the first hydraulic cylinder and the piston cavity of the second one are connected to the drain manifold.EFFECT: technical result consists in provision of minimum time for installation of a mast into required position, increased efficiency of a pile driver plant.4 cl, 1 dwg |
