The utility model belongs to the technical field of cat
litter basins, and discloses a rolling support driving mechanism and a pet excrement collecting device, the rolling support driving mechanism comprises a rolling support mechanism and a driving component, the rolling support component is in rolling fit with a bottom plate of the cat
litter basin through a lower rolling support piece to realize support, and the driving component drives the cat
litter basin to rotate. The contact between the lower rolling supporting piece and the cat litter basin bottom plate is changed into rolling friction from sliding friction, the
friction force is greatly reduced, the
energy loss is reduced, the operation of the device is smoother, and the service life of each component of the device is prolonged. Meanwhile, the friction
noise is reduced by introducing the rolling supporting
assembly, the user cannot be interfered by the friction
noise in daily use, and the use experience of the user is improved. By arranging the guide piece, the rolling supporting mechanism can be driven by the driving
assembly to reciprocate along the preset track of the guide piece, the guide piece can stably guide the rolling supporting mechanism to drive the
grating to reciprocate in the cat litter basin, reversing of the
grating is more flexible and rapid, and smooth operation of the device during switching in different directions is ensured.