CONSTRUCTION MACHINE

摘要

A heat exchanging device (19) includes a fame member (20) assembled having a square frame shape by using a lower frame (21) extending in a front and rear direction and mounted on a revolving frame (5), side frames (22, 23) extending to an upper side from both ends of the lower frame (21), and an upper frame (24) extending on an upper part of the side frames (22, 23). A cooling fan (17) is disposed in a state in which each of the blades (17B) enters into the frame member (20) from an engine side end surface (20A) with respect to the frame member (20). An oil cooler (28) and a radiator (30) are mounted on a mounting surface plate (25) on an opposite side to the engine (16) and interposing said cooling fan (17) at an interval from the cooling fan (17) with respect to the frame member (20). A flat plate shaped shroud (31) surrounding each of the blades (17B) of the cooling fan (17) and forming a fan accommodating chamber (32) among the frame member (20), the oil cooler (28), and the radiator (30) is mounted on the engine side end surface (20A) of the frame member (20).

主权项

1. A construction machine comprising:
an automotive lower traveling structure (2); an upper revolving structure (3) rotatably mounted on said lower traveling structure (2); and a working mechanism (4) provided on a front side of said upper revolving structure (3), capable of moving upward/downward; wherein said upper revolving structure (3) comprises: a revolving frame (5) forming a support structural body; an engine (16) mounted on a rear side of said revolving frame (5) in a laterally placed state extending in a left and right direction; a cooling fan (17) having a plurality of blades (17B) around a hub member (17A) located on one side of said engine (16) in the left and right direction and mounted on an output shaft of said engine (16) and generating cooling air by being driven by said engine (16); a hydraulic pump (18) provided on the other side of said engine (16) in the left and right direction and supplying hydraulic oil to a hydraulic actuator by being driven by said engine (16); and a heat exchanging device (19) including an oil cooler (28) provided on said revolving frame (5) so as to face said cooling fan (17) and cooling said hydraulic oil, and a radiator (30) for cooling coolant of said engine (16), characterized in that: said heat exchanging device (19) includes a fame member (20) assembled having a square frame shape by using a lower frame (21) located on a lower side, extending in a front and rear direction of said upper revolving structure (3) and mounted on said revolving frame (5), a pair of side frames (22, 23) extending to an upper side from both ends of said lower frame (21) in a length direction, and an upper frame (24) extending in the front and rear direction on an upper part of each of said side frames (22, 23); said cooling fan (17) is disposed in a state in which each of said blades (17B) enters into said frame member (20) from an end surface (20A) on said engine side with respect to said frame member (20); said oil cooler (28) and said radiator (30) are mounted on an opposite side to said engine (16) interposing said cooling fan (17) with respect to said frame member (20); and a flat plate shaped shroud (31) surrounding an outer periphery of each of said blades (17B) of said cooling fan (17) and forming a fan accommodating chamber (32) among said frame member (20), said oil cooler (28), and said radiator (30) is provided on said engine side end surface (20A) of said frame member (20).