Patent ID: 8215434

Claim:
A construction machine, having a vehicular lower structure, an upper revolving structure swingably mounted on said vehicular lower structure, and a working mechanism provided at the front of said upper revolving structure; said upper revolving structure being comprised of a revolving frame serving as a support structure, a counterweight attached to a rear end of said revolving frame as a weight balance relative to said working mechanism, said counterweight having right and left ends formed in an arcuately curved shape toward forward direction, an engine transversely mounted on said revolving frame at a position in front of said counterweight, a heat exchanger located at one side of transverse direction of said engine to cool fluid, a side door comprised as a part of an exterior housing cover and openably and closably provided at a position on one side of said heat exchanger and on one of transverse sides of said counterweight, an air cleaner chamber substantially triangular shape enclosed by said counterweight, side door and heat exchanger, an air intake pipe having one end located in said air cleaner chamber and having the other end connected to an intake side of said engine, and an air cleaner located in said air cleaner chamber and provided at one end side of said air intake pipe to separate dust from the air by a filter element, characterized in that; said air cleaner having an opening portion to permit insertion and extraction of said filter element and said opening portion is disposed in such a way as to face said side door, and a midway portion of said air intake pipe being arrange to ride over a front portion of said heat exchanger and one end of said air intake pipe connecting to said air cleaner.