The present invention relates to a cab tilting device of a small excavator, the main front end of the auxiliary frame 22 is fixed to the main frame 12 of the upper pivot 10 by the cab 20 is fixed to the main frame ( 12) to the front of the excavator, and pivotally connected to both ends of the gas cylinder 29 to the main frame 12 and the auxiliary frame 22, respectively, as the gas cylinder 29 stretch While allowing the main frame 12 to be tilted, both ends of the guide plate 36 having the guide groove of the predetermined length are connected to the main frame 12 and the auxiliary frame 22, respectively, and the guide plate 36 One end of the) is fixedly connected to the auxiliary frame 22 and the other end is connected to the main frame 12 so as to slide to control the maximum rotation angle of the auxiliary frame 22, the main frame 12 ) And The jaw frame 22 is provided with a locking mechanism 40 composed of a catch 41 and a strike 44, respectively, to lock or unlock the auxiliary frame 22 with respect to the main frame 12, so that an excavator When the parts such as the engine inside the upper swing structure are to be maintained, when the locking mechanism is released and the auxiliary frame 22 is released, the auxiliary frame 22 and the cab 20 are tilted with respect to the main frame 12. will be.
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