High-safety operation arm of surgical robot

The utility model discloses a high-safety surgical robot operating arm which comprises a set of mechanical arms in transmission connection, a fixing support is arranged in each mechanical arm, a transmission mechanism is arranged on each fixing support, and each transmission mechanism at least comprises a driving wheel, a driven wheel and a steel belt. The driving wheel and the driven wheel are arranged at the two ends of the fixing support, the steel belt is arranged on the driving wheel and the driven wheel, at least one of the driving wheel, the driven wheel and the steel belt is provided with an anti-failure detection mechanism, and once the anti-failure detection mechanism is triggered, the transmission mechanism stops running. According to the utility model, the anti-failure detection mechanisms are respectively arranged in the driving wheel, the driven wheel and the steel belt to accurately and timely feed back the operation precision of the transmission mechanism through multiple safety anti-failure d