COUNTERWEIGHT OF WORKING MACHINE

PROBLEM TO BE SOLVED: To provide a counterweight of a working machine provided with an additional counterweight for increasing the weight of a main counterweight while a revolving super structure is constituted in a compact manner even in the compact working machine. SOLUTION: This counterweight of the working machine is constituted by stacking a plurality of steel plates 11, 13 having such shapes of the outer peripheries that are suitable to a shape of an internal wall surface of the main counterweight 5 and attaching them onto a revolving frame 4 through fixing means such as a mounting bolt 18 and a nut 20. A plurality of kinds of steel plates having shapes being different from each other and being suitable to the shape of the internal wall surface of the main counterweight 5 are prepared as these steel plates 11, 13, which are used by combining them properly. Consequently, the additional counterweight 10 can be attached along the internal wall surface of the main counterweight 5. COPYRIGHT: (C)2009,JPO&INPIT