Cube rolling mechanism

The invention discloses a cube rolling mechanism which comprises first to eighth hemispherical connectors (A, B, C, D, E, F, G and H), first to twelfth I-shaped rods (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12), a motor (13) and a counterweight (14), wherein the eight hemispherical rods and twelve I-shaped rods are connected with one another through a revolute pair to form a cube mechanism, the motor drives the first I-shaped rod 1 to change the shape of the cube so as to enable the mechanism not to satisfy a stability principle and then to turn, thus realizing rolling.