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 can be rotated, the main frame 12 is provided with a torsion bar 24 in the horizontal direction, the free end of the torsion bar 24 is supported in sliding contact with the auxiliary frame 22. The torsion lever 26 having the supporting rod 27 is fixedly installed to apply a torsion moment to the torsion bar 24 when the torsion lever 26 receives the load of the cab 20. Both ends of the guide plate 36 having a guide groove of a predetermined length are connected to the main frame 12 and the auxiliary frame 22, respectively, one end of the guide plate 36 is fixedly connected to the auxiliary frame 22 The other end is attached to the mainframe (12). It is connected to the ride movement to control the maximum rotation angle of the auxiliary frame 22, the main frame 12 and the auxiliary frame 22, the locking mechanism consisting of a catch 41 and strike 44, respectively ( 40 is provided to lock or unlock the auxiliary frame 22 with respect to the main frame 12, and releases the locking mechanism when servicing the parts such as the engine inside the upper swing structure of the excavator. When the 22 is released, the auxiliary frame 22 and the cab 20 are tilted with respect to the main frame 12.
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