Construction machine

摘要

A tank bracket (23) is formed by a bottom surface part (24) having a first frame body (24A), a second frame body (24B), a third frame body (24C), and a fourth frame body (24D), a first side surface part (25) supported by the first frame body (24A) of the bottom surface part (24) and provided in a vertical direction, and a second side surface part (26) supported by the second frame body (24B) and provided in the vertical direction, and a female screw hole (24E) is provided in the bottom surface part (24). A fixing band (28) for fixing a reduction agent tank (22) is provided on the tank bracket (23). On this, the tank bracket (23) is fixed to an undercover (14) of a revolving frame (5) by using each of the female screw holes (24E) of the bottom surface part (24) in a state in which the reduction agent tank (22) is sandwiched between the second side surface part (26) and a right side frame (11) of the revolving frame (5).

主权项

1. A construction machine comprising:
a vehicle body frame forming a support structural body of a vehicle body, an engine mounted on said vehicle body frame, an exhaust gas post-treatment device connected to an exhaust side of said engine and performing post-treatment of an exhaust gas exhausted from said engine, and a reduction agent tank storing a reduction agent to be supplied to said exhaust gas post-treatment device, wherein: a tank bracket holding said reduction agent tank on said vehicle body frame is provided; said tank bracket is formed by a square-shaped bottom surface part having a first frame body, a second frame body, a third frame body, and a fourth frame body, a first side surface part supported by said first frame body of said bottom surface part and provided in a vertical direction, and a second side surface part supported by said second frame body adjacent to said first frame body in each of said frame bodies of said bottom surface part, provided in the vertical direction, and forming an L-shaped wall surface in collaboration with said first side surface part; said tank bracket includes a bracket fixing portion located on said bottom surface part and fixing said tank bracket to said vehicle body frame; a fixing band, connecting one of said first side surface part and said second side surface part to one of said first to fourth frame bodies forming said bottom surface part facing said one of said first side surface part and said second side surface part sandwiching said reduction agent tank and fixing said reduction agent tank between said bottom surface part and said one of said first side surface part and said second side surface part, is provided in said tank bracket; and said tank bracket is fixed to said vehicle body frame by said bracket fixing portion in a state in which said reduction agent tank is fixed by being sandwiched by said one of said first side surface part and said second side surface part and a part of said vehicle body frame or a member mounted on said vehicle body frame.