Abstract: A cover mounting bracket (16) is provided on an upper side of a left weight part (11) and a right weight part (12) constituting a counterweight (10). The cover mounting bracket (16) is formed as a U-shaped frame with the counterweight (10) side open by a left extending member (17) extending forward from the upper side of the left weight part (11), a right extending member (18) extending forward from the upper side of the right weight part (12), and a connecting member (19) connecting the front side of the left extending member (17) and the front side of the right extending member (18). A prime mover cover (28) is supported on the connecting member (19) of the cover mounting bracket (16) rotatably in a vertical direction through a hinge (31). The prime mover cover (28) is moved between an open position where an inspection opening (15) of the counterweight (10) is opened and a closed position where the inspection opening (15) is closed around the hinge (31).

Abstract: A cover mounting bracket (16) is provided on an upper side of a left weight part (11) and a right weight part (12) constituting a counterweight (10). The cover mounting bracket (16) is formed as a U-shaped frame with the counterweight (10) side open by a left extending member (17) extending forward from the upper side of the left weight part (11), a right extending member (18) extending forward from the upper side of the right weight part (12), and a connecting member (19) connecting the front side of the left extending member (17) and the front side of the right extending member (18). A prime mover cover (28) is supported on the connecting member (19) of the cover mounting bracket (16) rotatably in a vertical direction through a hinge (31). The prime mover cover (28) is moved between an open position where an inspection opening (15) of the counterweight (10) is opened and a closed position where the inspection opening (15) is closed around the hinge (31).

Abstract: On a revolving frame (5), an operating oil tank (15) located on the front side of an engine (8) is provided, and a fuel tank (16) located on the front side of the operating oil tank (15) is arranged. A mounting member (17) is provided on the lower side of the fuel tank (16) across a part of a swing cylinder (14). Between the operating oil tank (15) and the mounting member (17), a vertical restraining element (20) for restraining the fuel tank (16) in a front-rear direction and a vertical direction and a lateral restraining element (25) for restraining the fuel tank (16) in a left-right direction are detachably provided. Therefore, the fuel tank (16) can be restrained in two directions, that is, in the horizontal direction and the vertical direction.

Abstract: On a revolving frame (5), an operating oil tank (15) located on the front side of an engine (8) is provided, and a fuel tank (16) located on the front side of the operating oil tank (15) is arranged. A mounting member (17) is provided on the lower side of the fuel tank (16) across a part of a swing cylinder (14). Between the operating oil tank (15) and the mounting member (17), a vertical restraining element (20) for restraining the fuel tank (16) in a front-rear direction and a vertical direction and a lateral restraining element (25) for restraining the fuel tank (16) in a left-right direction are detachably provided. Therefore, the fuel tank (16) can be restrained in two directions, that is, in the horizontal direction and the vertical direction.

Abstract: A working machine is provided with a revolving upperstructure, working equipment, an engine compartment, a counterweight, a muffler, and an exhaust path for releasing exhaust gas, which has been discharged from the muffler, to an outer side of the revolving upperstructure. The exhaust path includes a tailpipe connected to the muffler and an exhaust pipe for releasing exhaust gas, which has been discharged from the tailpipe, to the outer side of the revolving upperstructure. The counterweight is utilized for the formation of the exhaust path. The exhaust path includes a passage formed in the counterweight and accommodating an upper end portion of the tailpipe inserted therein with a predetermined clearance formed around the upper end portion such that the exhaust gas discharged from the tailpipe can be guided to the exhaust pipe.

Abstract: A hose looping supporter (21) is provided on an upper surface (13A) of a lid (13) of a tank body (12) constituting an operating oil tank (11). This hose looping supporter (21) is constituted by a mounting member (22) mounted on the lid (13) and four retaining arms (23) each bent in a substantially J-shape. A suction hose (19) has its midway portion adapted to be looped annularly, and this looped hose portion (19B) is mounted by being held looped by each revolving frame (23). Meanwhile, in the case of replenishing a fuel tank (15) with fuel, the suction hose (19) can be easily removed from each retaining arm (23) of the hose looping supporter (21) by reducing the diameter of the looped hose portion (19B) of the suction hose (19).

Abstract: A working machine is provided with a revolving upperstructure, working equipment, an engine compartment, a counterweight, a muffler, and an exhaust path for releasing exhaust gas, which has been discharged from the muffler, to an outer side of the revolving upperstructure. The exhaust path includes a tailpipe connected to the muffler and an exhaust pipe for releasing exhaust gas, which has been discharged from the tailpipe, to the outer side of the revolving upperstructure. The counterweight is utilized for the formation of the exhaust path. The exhaust path includes a passage formed in the counterweight and accommodating an upper end portion of the tailpipe inserted therein with a predetermined clearance formed around the upper end portion such that the exhaust gas discharged from the tailpipe can be guided to the exhaust pipe.

Abstract: A hose looping supporter (21) is provided on an upper surface (13A) of a lid (13) of a tank body (12) constituting an operating oil tank (11). This hose looping supporter (21) is constituted by a mounting member (22) mounted on the lid (13) and four retaining arms (23) each bent in a substantially J-shape. A suction hose (19) has its midway portion adapted to be looped annularly, and this looped hose portion (19B) is mounted by being held looped by each revolving frame (23) . Meanwhile, in the case of replenishing a fuel tank (15) with fuel, the suction hose (19) can be easily removed from each retaining arm (23) of the hose looping supporter (21) by reducing the diameter of the looped hose portion (19B) of the suction hose (19).