A normal crab has eight walking legs and two paws that can't walk. The crab's chest has five pairs of appendages, which are called pectoral feet. The front pair of appendages are equipped with powerful claws, which can be used for foraging. The other four pairs of appendages are crab feet. Walking depends on these four pairs of appendages. Walking looks unique and interesting, and most of them walk sideways rather than straight.
Crab chest has five pairs of appendages, which are called chest feet. A pair of appendages at the front end are equipped with powerful claws, which can be used for foraging. The other four pairs of appendages are crab feet. Crabs rely on these four pairs of appendages to walk and move. The way they walk is unique and interesting, and most of them walk sideways rather than straight. Except monks and crabs, they all walk straight.
Based on the characteristic that the two feet at the tail of crab seldom participate in walking, a 6-foot lateral moving walking mechanism was developed by imitating the walking mode of crab, and its motion characteristics were studied to meet the requirements of walking on rigid ground and soft ground in agricultural production.