Multi-wheel-leg mobile robot for complex environment

The invention belongs to the technical field of industrial mechanical devices, and particularly relates to a multi-wheel-leg mobile robot for a complex environment. Wherein a four-axis precision mechanical arm is arranged on the shell, a mechanical leg mechanism is arranged in the four-axis precision mechanical arm, a mechanical arm support is connected to a mechanical arm chassis, a mechanical claw driving motor is fixed in a connecting frame, and a driving shaft of the mechanical claw driving motor is connected with a triangular support; fingers are respectively arranged in front of and behind the connecting frame; the right sides of the fingers are connected with a driving shaft of a paw driving motor through a screw push plate; the mechanical arm big arm is connected to the mechanical arm support and connected with the big and small arm driving motor, and the small arm driving motor is connected with the motor swing shaft rod; a motor swing shaft rod is connected with a first pull rod, the first pull rod