The invention relates to the technical field of mobile robots, in particular to a bimodal spherical
mobile robot based on a connecting rod folding and unfolding mechanism, which comprises a first spherical shell module, a second spherical shell module and a driving module, the first spherical shell module comprises a first connecting shell, a second connecting shell, a third connecting shell, a fourth connecting shell, a fifth connecting shell, a sixth connecting shell, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod and a circular shell; the second spherical shell module comprises a first connecting shell, a second connecting shell, a third connecting shell, a fourth connecting shell, a fifth connecting shell, a sixth connecting shell, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod and a circular shell; the control module comprises a first gear motor, a second gear motor, an electric push rod, a double-shaft steering engine, a first sleeve, a second sleeve, a first bearing connecting piece, a second bearing connecting piece, a first bearing, a second bearing, a steering engine connecting piece and a weight. By changing the spherical and folding structures of the mechanism structure, optimization and improvement of the moving stability, the narrow
terrain passing efficiency and the environment adaptability of the
robot are synchronously achieved.