Extensible multi-degree-of-freedom explosive ordnance disposal robot

The invention discloses an extensible multi-degree-of-freedom explosive ordnance disposal robot. The extensible multi-degree-of-freedom explosive ordnance disposal robot comprises a base, a thick shaft is connected onto a spindle of a rotary steering engine which is fixed onto the base, an upper-arm steering engine is arranged in an upper-arm steering engine frame which is arranged at the top of the thick shaft, and an upper-arm telescopic air cylinder is arranged on an upper arm which is fixed onto the upper-arm steering engine. A forearm steering engine is arranged in a forearm steering engine frame which is fixed onto a push rod of the upper-arm telescopic air cylinder, and a forearm telescopic air cylinder is arranged on a small arm which is fixed onto the forearm steering engine. A first wrist steering engine is arranged in a wrist steering engine frame which is fixed onto a push rod of the forearm telescopic air cylinder, a second wrist steering engine is fixed onto the first wrist steering engine, and a third wrist steering engine is arranged on a manipulator which is connected onto a spindle of the second wrist steering engine. The extensible multi-degree-of-freedom explosive ordnance disposal robot has the advantages of (1) flexibility and reliability; (2) firmness and reliability in connection of the whole mechanism; (3) convenience in control and high reliability and stability.