FRONT WINDOW OPENING AND CLOSING DEVICE OF CONSTRUCTION MACHINE

PROBLEM TO BE SOLVED: To provide a front window opening and closing device of a construction machine capable of ensuring sealing performance in a window closing state while effectively displaying an original assisting action of an assisting structure. SOLUTION: While mounting the upper end of a link 11 to a roller shaft 2a of an upper guide roller 2 provided at the upper part of the front window 1 opening and closing the front opening of a cabin 4, a wire stop pin 12 moving inside a wire guide rail 10 is provided to the lower end of the link 11, the front end of an assisting wire 9 connected to a spring 8 is connected to the wire stop pin 12 to make a tensile force act on the front window 1 by making it as a force pushed against the front, and the front window is so constituted that the tensile force can work as an assisting force in the front window 1 through the link 11 when the front window 1 is opened. COPYRIGHT: (C)2007,JPO&INPIT