The ornamental design for a barbellliftingtool, as shown and described.
FIG. 1 is a perspective view of a barbell lifting tool showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a side view thereof, the opposite side being a mirror image;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a perspective view thereof in use.
The broken lines in FIG. 7 are for the purpose of illustrating environmental matter and form no part of the claimed design. All other broken lines in the drawings show portions of the barbell lifting tool which form no part of the claimed design.