Patent ID: 7854284
Filing Date: 2010-12-21
Classification: E02F,Y10T

Abstract:
1. An upper rotating body of a construction machine, comprising: a rotating frame rotatably mountable on a lower traveling body; a pair of left and right vertical plates disposed on said rotating frame and adapted to support a working attachment having an actuator; a fuel tank provided on the rotating frame at a side of one of said vertical plates opposite from the other vertical plate; a working oil tank provided on said rotating frame and aligned with said fuel tank in the front-back direction; a control valve provided on the rotating frame at a side of said working oil tank opposite said one of the vertical plates; an operation pipe adapted to supply pilot pressure to said control valve, said operation pipe being connected to said control valve; hydraulic pipes for coupling said control valve and the actuator for the working attachment; and a retaining tool for retaining at least one of said hydraulic pipes, said retaining tool being provided at said one of the vertical plates, wherein a first clearance is formed between said fuel tank and said working oil tank, and a second clearance is formed between said working oil tank and said rotating frame, wherein a given portion of said hydraulic pipes, which given portion is less than all of said hydraulic pipes, is led to a space between said vertical plates via said second clearance, and a remaining portion of said hydraulic pipes is not led to the space between said vertical plates and is led to said retaining tool through said first clearance, wherein a pin inserting and removing portion into and from which a boom foot pin for axially supporting said attachment is insertable and removable in the lateral direction is formed in each of said vertical plates, and said pin inserting and removing portion and said first clearance are provided at corresponding positions in the front-back direction, wherein said remaining portion of the hydraulic pipes passing through said first clearance is arranged on the upper side of said pin inserting and removing portion, while said operation pipe is arranged below said pin inserting and removing portion through said first clearance.