Construction machine

Patent metadata

Field	Value
Publication number	US-2016369478-A1
Application number	US-201414915689-A
Country	US
Kind code	A1
Filing date	Dec 8, 2014
Priority date	Feb 24, 2014
Publication date	Dec 22, 2016
Grant date	—

Abstract

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 ( 17 B) enters into the frame member ( 20 ) from an engine side end surface ( 20 A) 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 ( 17 B) 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 ( 20 A) of the frame member ( 20 ).

First claim

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 ( 17 B) around a hub member ( 17 A) 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 ( 17 B) enters into said frame member ( 20 ) from an end surface ( 20 A) 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 ( 17 B) 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 ( 20 A) of said frame member ( 20 ).

2 . The construction machine according to claim 1 , wherein
said shroud ( 31 ) is formed as a rectangular plate body having a circular opening ( 31 A) for surrounding said cooling fan ( 17 ), and a periphery of said shroud is detachably attached to said engine side end surface ( 20 A) of said frame member ( 20 ).

3 . The construction machine according to claim 1 , wherein
a support member ( 33 ) formed of a housing support base ( 34 ) extending on an upper side of said engine ( 16 ) in the left and right direction and formed of front and rear leg parts ( 35 , 36 ) each having an upper end mounted at a position on the other side of said housing support base ( 34 ) in the left and right direction and a lower end mounted on said revolving frame ( 5 ) across said engine ( 16 ) in the front and rear direction is provided on said revolving frame ( 5 ); and said housing support base ( 34 ) of said support member ( 33 ) having one side which is a free end ( 34 F) in the left and right direction is mounted on said frame member ( 20 ) of said heat exchanging device ( 19 ).

Assignees

• Hitachi Construction Mach Co

Inventors

• KOKURYOU Osamu
• Kawamoto Junya
• Ueda Masaya

Classifications

• B60K11/04

  Arrangement or mounting of radiators, radiator shutters, or radiator blinds · CPC title

• B60Y2200/412

  Excavators · CPC title

• F15B11/08

  with only one servomotor · CPC title

• F01P5/04

  Pump-driving arrangements · CPC title

• E02F3/325

  Backhoes of the miniature type · CPC title