Construction machine

Abstract

A left weight mounting part ( 16 ) and a right weight mounting part ( 17 ) are provided with rear ends of a left vertical plate ( 8 ) and a right vertical plate ( 9 ) of a main frame ( 6 ), and a placing plate ( 24 ) adapted to place a battery ( 29 ) thereon is provided between the left weight mounting part ( 16 ) and the right weight mounting part ( 17 ). An accommodating groove ( 25 G) is provided in a counterweight ( 25 ) by notching, in a front-rear direction, a part that faces the placing plate ( 24 ) in an up-down direction. A space ( 26 A) formed by the placing plate ( 24 ) and the accommodating groove ( 25 G) can be configured as an article accommodating room ( 26 ) that accommodates the battery ( 29 ).

1 . A construction machine comprising:
 a vehicle body frame ( 5 ) that forms a support structure of a vehicle body ( 2 ,  3 ), on the front side of which a working mechanism ( 4 ) is mounted and on which a prime mover ( 18 ) is mounted; and   a counterweight ( 25 ,  42 ,  81 ) mounted on a rear end of said vehicle body frame ( 5 ) in order to balance weight with said working mechanism ( 4 ), wherein   said vehicle body frame ( 5 ) is configured by a main frame ( 6 ) that is formed from a bottom plate ( 7 ) and left and right vertical plates ( 8 ,  9 ) arranged upright on said bottom plate ( 7 ), left and right side frames ( 12 ,  13 ) that are located on left and right both sides of said main frame ( 6 ) and extend in a front-rear direction, a plurality of extension beams ( 14 A to  14 F) that extend in a left-right direction at intervals in the front-rear direction in order to connect said left and right side frames ( 12 ,  13 ) and said main frame ( 6 ), and left and right weight mounting parts ( 16 ,  17 ) that are provided with rear ends of said left and right vertical plates ( 8 ,  9 ) of said main frame ( 6 ) and on which said counterweight ( 25 ,  42 ,  81 ) is mounted, characterized in that:   a placing member ( 24 ,  41 ,  51 ,  61 ,  71 ,  91 ) adapted to place an article ( 29 ) thereon is provided between said left weight mounting part ( 16 ) and said right weight mounting part ( 17 ),   an accommodating groove ( 25 G,  42 E,  81 D) is provided in said counterweight ( 25 ,  42 ,  81 ) by notching, in the front-rear direction, a part that faces said placing member ( 24 ,  41 ,  51 ,  61 ,  71 ,  91 ) in an up-down direction, and   a space formed by said placing member ( 24 ,  41 ,  51 ,  61 ,  71 ,  91 ) and said accommodating groove ( 25 G,  42 E,  81 D) in said counterweight ( 25 ,  42 ,  81 ) is configured as an article accommodating room ( 26 ,  43 ) that accommodates said article ( 29 ).   
     
     
         2 . The construction machine according to  claim 1 , wherein
 said placing member ( 24 ,  41 ,  51 ,  61 ,  71 ,  91 ) is arranged on lower parts ( 16 C,  17 C) of said left and right weight mounting parts ( 16 ,  17 ).   
     
     
         3 . The construction machine according to  claim 1 , wherein
 said left and right weight mounting parts ( 16 ,  17 ) are formed into I-shapes in section by left and right rear vertical plates ( 16 A,  17 A) that contiguously extend from said left and right vertical plates ( 8 ,  9 ), left and right upper flanges ( 16 B,  17 B) that contiguously extend from upper flanges ( 8 B,  9 B) of said left and right vertical plates ( 8 ,  9 ) and left and right lower flanges ( 16 C,  17 C) that contiguously extend from lower flanges ( 8 C,  9 C) of said left and right vertical plates ( 8 ,  9 ), and said placing member ( 24 ,  41 ,  51 ,  61 ,  71 ,  91 ) is provided between said left and right lower flanges ( 16 C,  17 C).   
     
     
         4 . The construction machine according to  claim 1 , wherein
 a partition member ( 27 ,  44 D,  91 B) that partitions off said article accommodating room ( 26 ,  43 ) from a machine room ( 31 ) that said prime mover ( 18 ) is to be accommodated is provided on the front side of said article accommodating room ( 26 ,  43 ).   
     
     
         5 . The construction machine according to  claim 1 , wherein
 a lid member ( 28 ,  82 ) that closes the rear side of said article accommodating room ( 26 ) to be openable/closable is provided on the rear surface side of said counterweight ( 25 ,  81 ).   
     
     
         6 . The construction machine according to  claim 1 , wherein
 a rear part lateral plate ( 11 A) that extends in the left-right direction is arranged upright on the front sides of said left and right weight mounting parts ( 16 ,  17 ), and said rear part lateral plate ( 11 A) also functions as a partition member that partitions off the front side of said article accommodating room ( 26 ,  43 ).   
     
     
         7 . The construction machine according to  claim 1 , wherein
 a box ( 44 ) the front side of which is closed and the rear side of which is opened is provided on the upper side of said placing member ( 41 ), and a lid member ( 45 ) that closes said box ( 44 ) to be openable/closable is provided on the rear side of said box ( 44 ).