FIG. 1 is a elevated rear and left side perspective view of for an operator enclosure frame showing a first embodiment of our new design, the broken line showing of the vehicle and tool being for illustrative purposes only, and forms no part of the claimed design;

FIG. 2 is an enlarged left side view of the operator enclosure frame design of FIG. 1;

FIG. 3 is an enlarged top view of the operator enclosure frame design of FIG. 1;

FIG. 4 is an enlarged rear view of the operator enclosure frame design of FIG. 1;

FIG. 5 is an enlarged front view of the operator enclosure frame design of FIG. 1;

FIG. 6 is an enlarged bottom view of the operator enclosure frame link design of FIG. 1;

FIG. 7 is a elevated rear and right side perspective view of for an operator enclosure frame showing a second embodiment of our new design, the broken line showing of the vehicle and tool being for illustrative purposes only, and forms no part of the claimed design;

FIG. 8 is an enlarged right side view of the operator enclosure frame design of FIG. 7;

FIG. 9 is an enlarged top view of the operator enclosure frame design of FIG. 7;

FIG. 10 is an enlarged rear view of the operator enclosure frame design of FIG. 7;

FIG. 11 is an enlarged front view of the operator enclosure frame design of FIG. 7; and,

FIG. 12 is an enlarged bottom view of the operator enclosure frame link design of FIG. 7.