Patent ID: 8550198
Filing Date: 2013-10-08
Classification: B60K,B60Y,E02F,F01P

Abstract:
1. A construction machine comprising: a vehicle frame which serves as a support structure and on a front side of which a working mechanism is mounted; a counterweight disposed on a rear side of said vehicle frame; an engine mounted on said vehicle frame by being located on a front side of said counterweight; a muffler device to discharge exhaust gases from said engine; a hydraulic pump disposed on one side, in a left-right direction, of said engine and driven by said engine, said muffler being located above said hydraulic pump; a cooling fan for said engine and located on an opposite side, in the left-right direction, to said hydraulic pump and being operable to suck cooling air from the outside of the construction machine; a heat exchanger disposed in face-to-face relation to said cooling fan by being located upstream of said cooling fan in a flowing direction of the cooling air; and an exterior cover disposed on said vehicle frame to cover mounted equipment including said engine, said hydraulic pump, said muffler device and said heat exchanger, wherein: said exterior cover includes an engine cover disposed over said engine in an un-openable state, a heat exchanger cover which is positioned over said heat exchanger and which heat exchanger cover is openable to expose said heat exchanger and further which is in juxtaposition with said engine cover in the left-right direction, which heat exchanger cover has an upper surface protruding upwardly from a peripheral portion of said heat exchanger cover above an upper surface of said engine cover, and a side cover disposed in face-to-face relation to said heat exchanger and being located on a side of said vehicle frame, said heat exchanger cover having a heat exchanger cover air inlet port located on a side of said peripheral portion of said heat exchanger cover to suck outside air as cooling air, and one heat exchanger cover exhaust port located on a side of said heat exchanger cover remote from said heat exchanger cover inlet port to allow the cooling air which has passed through said heat exchanger to be exhausted in a horizontal direction above said engine cover, an engine cover exhaust port for exhausting the cooling air disposed on said engine cover at a position further away from said engine in a left-right direction than said heat exchanger cover exhaust port, and wherein said engine cover exhaust port is disposed above said hydraulic pump, said heat exchanger cover exhaust port and said engine cover exhaust port being arranged in juxtaposition with each other in the left-right direction, a fire wall positioned between said engine and said hydraulic pump, said fire wall being disposed within said exterior cover, and a flow guide plate on said fire wall and having an inclined plate to guide the cooling air diagonally upward toward said engine cover exhaust port, to make the cooling air, which has passed around said engine and which is exhausted from said engine cover exhaust port, flow in a direction away from said heat exchanger cover inlet port, said flow guide plate being disposed above, and covering, said muffler device.