A blocking unit (100) for telescopic sections (300) comprising a first engaging part (110) movable between a disengaged position (dis) and an engaged position (imp), a first hydraulic cylinder (1a, 1b) which moves the first engaging part, a first movement part (130) of blocking pins (400) movable between a first position (p) and a second position (s), a second hydraulic cylinder (2) which moves the first movement part, a first (5) and a second (6) safety hydraulic cylinder (5) comprising a chamber (52, 62) and a movable part (51, 61) which passes from a rest position (rip) to an extended position (est) and a hydraulic circuit. The movable parts (51, 61) are respectively movable in the direction of the first engaging part (110) and of the first movement part (130) and in the extended position (est) the hydraulic fluid in the chambers (52, 62) oppose the return into the first (p) or disengagement position (dis).


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    Title :

    A BLOCKING UNIT FOR TELESCOPIC SYSTEMS, A HYDRAULIC CYLINDER AND A TELESCOPIC SYSTEM


    Additional title:

    BLOCKIEREINHEIT FÜR TELESKOPISCHE SYSTEME, HYDRAULIKZYLINDER UND TELESKOPISCHES SYSTEM
    UNITÉ DE BLOCAGE POUR SYSTÈMES TÉLESCOPIQUES, VÉRIN HYDRAULIQUE ET SYSTÈME TÉLESCOPIQUE


    Contributors:

    Publication date :

    2024-04-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein




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