Construction Machine

Abstract

A hollow first accommodating case ( 28 ) is provided on a front part of a revolving frame ( 5 ) at a position on a front side of a fuel tank ( 23 ), and a fuel supply pump ( 34 ) for supplying a fuel stored in an external fuel storage source to the fuel tank ( 23 ) is provided on the fuel tank ( 23 ) by being connected. A fuel suction port ( 35 ) for sucking the fuel toward the fuel supply pump ( 34 ) is provided in the first accommodating case ( 28 ) by being opened to an outside, and a urea water tank ( 25 ) is provided by being accommodated in the first accommodating case ( 28 ). A water supply port ( 25 G) of a urea water is provided in the urea water tank ( 25 ) by being opened to the outside, and the fuel suction port ( 35 ) and the water supply port ( 25 G) of the urea water are juxtaposed and arranged in the first accommodating case ( 28 ).

1 . A construction machine comprising:
 a lower traveling structure, an upper revolving structure rotatably mounted on said lower traveling structure, and a working mechanism tiltably provided on a front part of said upper revolving structure, wherein   said upper revolving structure includes;   a revolving frame constituting a support structural body,   an engine mounted on a rear side of said revolving frame and driving a hydraulic pump,   a hydraulic oil tank provided on said revolving frame at a position on a front side of said engine and storing a hydraulic oil to be supplied to said hydraulic pump,   a fuel tank provided on said revolving frame, adjacent to the front side of said hydraulic oil tank, and storing a fuel to be supplied to said engine,   a NOx purifying device provided by being connected to an exhaust pipe of said engine and removing nitrogen oxides contained in an exhaust gas, and   a urea water tank storing urea water to be supplied to said NOx purifying device, characterized in that:   a hollow accommodating case is provided on a front part of said revolving frame at a position on a front side of said fuel tank;   a fuel supply pump for supplying the fuel stored in an external fuel storage source to said fuel tank is provided by being connected in said fuel tank;   a fuel suction port for sucking the fuel toward said fuel supply pump is provided in said accommodating case by being opened to an outside;   said urea water tank is provided by being accommodated in said accommodating case;   a water supply port of the urea water is provided in said urea water tank by being opened to the outside; and   said fuel suction port and said water supply port of the urea water are juxtaposed and arranged in said accommodating case.   
     
     
         2 . The construction machine according to  claim 1 , wherein
 an opening/closing cover for opening and closing by using a rear side as a fulcrum is provided on said accommodating case; and   said fuel suction port and said water supply port of the urea water are arranged at positions where supply works can be performed from a front in a state where said opening/closing cover is opened.   
     
     
         3 . The construction machine according to  claim 1 , wherein
 an operation switch of said fuel supply pump is provided in said accommodating case at a position in the vicinity of said fuel suction port.   
     
     
         4 . The construction machine according to  claim 1 , wherein
 a fuel filter for removing foreign substances in the fuel is provided in the middle of a passage from said fuel suction port to said fuel tank; and   a clogging indicator for displaying a clogged state of said fuel filter is provided in said accommodating case.   
     
     
         5 . The construction machine according to  claim 1 , wherein
 said fuel supply pump is provided in said accommodating case.