Underwater robot gravity center and floating-sinking adjusting device

The invention discloses an underwater robot gravity center and floating-sinking adjusting device. The gravity center and floating-sinking adjusting device is characterized by comprising an adjusting movement mechanism and an operation track; the adjusting movement mechanism comprises a driving motor and external rollers; the external rollers are matched with the operation track to move; and the device further comprises a water ballast tank connected with a driving motor, the water ballast tank is driven by the driving motor, external rollers and the like to reciprocate in the operation track,and the water ballast tank is used for being filled with or discharging ballast water to adjust the gravity of underwater vehicles such as underwater robots so as to achieve sinking or floating motion. Ballast water serves as a mass block for gravity center adjustment, an integrated driving mechanism composed of the driving motor, external rollers and the like reciprocates in the operation track,and the gravity center pos