Abstract: Provided is a construction machine in which the weight of a top plate of an aftertreatment device mount is reduced without reducing the rigidity of the top plate. In a construction machine where a vehicle body frame for mounting an engine is equipped with an aftertreatment device mount for supporting an exhaust gas aftertreatment device, a mount top plate of the aftertreatment device mount includes a support on which the exhaust gas aftertreatment device is placed, a pair of outer walls extending parallel, a groove portion parallel to the outer walls, a connecting portion provided on the support, and an upper reinforcing member orthogonal to the groove portion at a position of the connecting portion. The upper reinforcing member includes a first reinforcing portion for reinforcing the connecting portion and a second reinforcing portion to be fitted in the groove portion.

Abstract: Provided is a construction machine in which the weight of a top plate of an aftertreatment device mount is reduced without reducing the rigidity of the top plate. In a construction machine where a vehicle body frame for mounting an engine is equipped with an aftertreatment device mount for supporting an exhaust gas aftertreatment device, a mount top plate of the aftertreatment device mount includes a support on which the exhaust gas aftertreatment device is placed, a pair of outer walls extending parallel, a groove portion parallel to the outer walls, a connecting portion provided on the support, and an upper reinforcing member orthogonal to the groove portion at a position of the connecting portion. The upper reinforcing member includes a first reinforcing portion for reinforcing the connecting portion and a second reinforcing portion to be fitted in the groove portion.