TRACK LINING HYDRAULIC JACK Russian patent published in 2004 - IPC

FIELD: railway transport; repair of tracks. SUBSTANCE: proposed track lining hydraulic jack contains pumps with manual drive and oil tank, hydraulic cylinder connected with pump, support plate secured on piston of hydraulic cylinder, bracket with feet for engagement with rail installed on hydraulic cylinder, and handles to carry jack and install it in working position. Bracket with feet and plunger of pump are installed at opposite sides of jack in plane of rocking of drive handle. Hermetically sealed space accommodating return mechanism is found between bracket and hydraulic cylinder. Self-braking turnable stop is installed on hydraulic cylinder. Said stop engages with rail head when suspending track skeleton, and recess is made on support plate from side of drive handle to move jack along rail head. Invention is aimed at improved design of hydraulic jack by eliminating its over turning and turning around its axis, improvement of process of releasing of hydraulic jack from contact with rail and ballast and reduction of zone of rocking of hydraulic jack handle and decrease of mass of hydraulic jack. EFFECT: improved design of hydraulic jack. 2 dwg