A hydraulic support pushing electro-hydraulic control jack for mine

Abstract

The utility model discloses a kind of mine hydraulic support pushover electro-hydraulic control jack, it is related to jack electro-hydraulic control technical field. Including, cylinder and piston rod, piston rod is located in cylinder, the outer wall bottom of cylinder is fixed with jack base, the inner wall of jack base is slidably embedded with plug, the outer wall top of plug is fixed with stroke sensor rod, the outer wall top of stroke sensor rod is fixed with inductance coil, the inner wall of piston rod is fixedly embedded with magnetic force change frame, inductance coil is located in magnetic force change frame. Through jack base, sealing disc, piston rod and auxiliary ring, it can be reformed on the basis of original non-electro-hydraulic control pushover jack old piece maintenance, improve the utilization of old piece, avoid the idle and scrap disposal of original old piece, only need to reform the piston rod and cylinder bottom structure in non-electro-hydraulic control pushover jack, other parts can be maintained, reduce the production cycle of hydraulic support intelligentization reconstruction.

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