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    • 5. 发明公开
    • CONSTRUCTION MACHINE
    • 施工机械
    • EP2921590A1
    • 2015-09-23
    • EP15158561.9
    • 2015-03-11
    • Hitachi Construction Machinery Co., Ltd.
    • Fujii, ToshinoriMano, HidenoriKamiya, Shohei
    • E02F9/08B60K13/04B60K15/00B66C13/00
    • E02F9/0875B60K13/04B60Y2200/412E02F9/0808E02F9/0833E02F9/0866E02F9/0883F01N3/2066F01N2610/02F01N2610/1406Y02A50/2325
    • In a NOx selective catalytic reduction device that purifies NOx in exhaust gas exhausted from an engine (10), a urea water supply system is constructed of a urea water injection valve (20), a urea water tank (24), urea water supply piping (22) and a urea water supply device (30), a connection frame member (3d) is provided on a revolving superstructure (2, 3) to extend in a longitudinal direction in a center in a width direction to reinforce the revolving superstructure and to be located between a pair of main frame members (3b, 3b) that connects a working device (4) so that a rear side faces the engine, the urea water tank is placed on the revolving superstructure on a front side from a center of revolution of the revolving superstructure, the engine is placed on the revolving superstructure on a rear side from the center of revolution of the revolving superstructure, and the urea water supply device (30) is installed on the connection frame member (3d) to face the engine.
    • 在净化从发动机(10)排出的排气中的NOx的NOx选择性催化还原装置中,尿素水供给系统由尿素水喷射阀(20),尿素水箱(24),尿素水供给配管 (22)和尿素水供给装置(30)之间,在旋转体(2,3)上沿宽度方向的中央沿长度方向延伸设置连结框体(3d),以加强旋转体, 位于连接作业装置(4)的一对主框架构件(3b,3b)之间,使得后侧面向发动机,尿素水箱被放置在旋转上部结构的前侧, 其特征在于,所述旋转体的旋转中心位于所述旋转体的后侧,所述尿素水供给装置(30)安装在所述连结框体(3d)上, 发动机。