A counterweight device installed in a rear end portion of a machine body frame includes amounting table having amounted counterweight, a hydraulic cylinder that raises/lowers the mounting table, a connection structure that connects the mounting table and a cylinder rod of the hydraulic cylinder, a support member that supports the hydraulic cylinder on the mounting table via an oscillating spindle, a first coupling mechanism that couples the connection structure and the rear end portion of the machine body frame to each other at a position where an upper end of the rear end portion is lower than an upper end of the connection structure, a second coupling mechanism that couples the support member and the rear end portion of the machine body frame to each other, a first operation unit that operates the first coupling mechanism, and a second operation unit that operates the second coupling mechanism.


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    Title :

    Counterweight device and construction machine


    Contributors:

    Publication date :

    2020-10-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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