FIELD: railway transport. SUBSTANCE: invention relates to mechanization of main tenancy, current and major repairs of railway contact system. Proposed installation for demounting supporting structures of contact system contains base and load- lifting mechanisms with external drive radially mounted on base. Forces from outlet members of load-lifting mechanisms are transmitted to grips provided with checks and locks on which axles are installed. Some axles are connected with outlet members of load-lifting mechanisms, and detachable embracing holders of contact system supporting structures are hinge-mounted on other axles. Base is provided with opening sector and mechanisms locking base of supporting structure and consisting of spring-loaded eccentrics with release levers. EFFECT: possibility of demounting of supporting structures without their mechanical destruction. 3 cl, 3 dwg
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