PIN CONNECTION DEVICE OF WORKING MACHINERY, WORKING MACHINERY AND METHOD OF ASSEMBLING/DISASSEMBLING ITS BOOM

摘要

PROBLEM TO BE SOLVED: To safely and efficiently perform connecting/disconnecting operation (assembly/disassembly of a boom) of a boom section.;SOLUTION: A pin connection device 15 is provided within the width dimension of cross section of the boom sections S1, S2 in both sides of mutually opposed vertical end of both of the boom sections S1, S2 mutually connected as means which connects the boom sections composing the boom with each other in boom length direction and simultaneously composes by first brackets 16a, 16b, 18 and second brackets 17a, 17b, 19 which are provided on both sides of left and right of both of the boom sections S1, S2, and a first pin 22 serving as hydraulic cylinder combination which connects/disconnects the first brackets with/from each other, and a second pin 23 which connects the second brackets with each other by stroke-actuating in an opposite direction when the first pin 22 is actuated.;COPYRIGHT: (C)2005,JPO&NCIPI