Construction Machine

Abstract

A counterweight ( 9 ) provided on a rear side of an upper revolving structure ( 3 ) is formed as a block body in which a boundary position between a rear surface ( 9 B) and the upper surface ( 9 C) is a projected curved surface ( 9 E) which is curved with a projected arc shape. A rear camera device ( 11 ) mounted on the upper surface ( 9 C) of the counterweight ( 9 ) is arranged on the upper surface ( 9 C) of the counterweight ( 9 ) and in a state protruding rearward toward the projected curved surface ( 9 E) of the counterweight ( 9 ). On the other hand, a cover member ( 19 ) covering a gap ( 18 ) formed by the projected curved surface ( 9 E) is provided between the projected curved surface ( 9 E) of the counterweight ( 9 ) and a rear part lower surface ( 12 F) of a mounting plate ( 12 ) of the rear camera device ( 11 ).

1 - 6 . (canceled) 
     
     
         7 . A construction machine comprising:
 an automotive vehicle body ( 2 ,  3 );   a working mechanism ( 4 ) provided on a front side of said vehicle body ( 2 ,  3 );   a counterweight ( 9 ) provided on a rear side of said vehicle body ( 2 ,  3 ) for taking a weight balance with said working mechanism ( 4 ); and   a rear camera device ( 11 ) mounted on an upper surface ( 9 C) of said counterweight ( 9 ) for obtaining a visual field in the rear, characterized in that:   said counterweight ( 9 ) is formed as a block body in which a boundary position between a rear surface ( 9 B) and said upper surface ( 9 C) is a projected curved surface ( 9 E) which is curved with a projected arc shape;   said rear camera device ( 11 ) is arranged on said upper surface ( 9 C) of said counterweight ( 9 ) and in a state protruding toward said projected curved surface ( 9 E) of said counterweight ( 9 ); and   a cover member ( 19 ) covering a gap ( 18 ) formed by said projected curved surface ( 9 E) is provided between said projected curved surface ( 9 E) of said counterweight ( 9 ) and a rear part lower position ( 12 F) of said rear camera device ( 11 ), wherein   said rear camera device ( 11 ) is constituted by a mounting plate ( 12 ) extending in a front and rear direction and mounted on said upper surface ( 9 C) of said counterweight ( 9 ), a camera housing ( 15 ) provided on a rear side on said mounting plate ( 12 ), and a camera body ( 17 ) accommodated in said camera housing ( 15 ); and   said cover member ( 19 ) is mounted on said rear part lower position ( 12 F) of said mounting plate ( 12 ).   
     
     
         8 . The construction machine according to  claim 7 , wherein
 an accommodating recessed portion ( 9 G) is provided at a center part in a left and right direction on said upper surface ( 9 C) of said counterweight ( 9 );   a camera device mounting member ( 10 ) composed of a top plate ( 10 A) covering said accommodating recessed portion ( 9 G) and mounted on said upper surface ( 9 C) and a recessed bottom plate ( 10 B) mounted on a lower surface of said top plate ( 10 A) and accommodated in said accommodating recessed portion ( 9 G) is provided on said upper surface ( 9 C) of said counterweight ( 9 );   a welding nut ( 10 D) having a female screw hole at a position faced with said recessed bottom plate ( 10 B) is provided on the lower surface of said top plate ( 10 A);   a bolt insertion hole ( 12 C) is provided at a position corresponding to said welding nut ( 10 D) on said mounting plate ( 12 ) of said rear camera device ( 11 ); and   said mounting plate ( 12 ) is configured to be mounted on said welding nut ( 10 D) through said bolt insertion hole ( 12 C) using a bolt ( 14 ).   
     
     
         9 . The construction machine according to  claim 7 , wherein
 a fringe member ( 20 ) made of an elastic material is provided on said cover member ( 19 ) so as to cover an end edge ( 19 A 1 ,  19 B 1 ) on a lower side faced with said projected curved surface ( 9 E) of said counterweight ( 9 ).   
     
     
         10 . The construction machine according to  claim 7 , wherein
 said cover member ( 19 ) is formed of a rear plate part ( 19 A) closing a gap between a rear end of said rear part lower position ( 12 F) of said rear camera device ( 11 ) and said counterweight ( 9 ) and left and right inclined plate parts ( 19 B) extending from both left and right ends of said rear plate part ( 19 A) to a front side along said projected curved surface ( 9 E) of said counterweight ( 9 ) and closing left and right gaps from said counterweight ( 9 ).   
     
     
         11 . The construction machine according to  claim 10 , wherein
 end edges ( 19 B 1 ) on lower sides of said left and right inclined plate part ( 19 B) of said cover member ( 19 ) are formed each having a recessed arc shape along said projected curved surface ( 9 E) of said counterweight ( 9 ).