Bag grabbing mechanical arm for sludge bag breaking equipment

The invention discloses a bag grabbing mechanical arm for sludge bag breaking equipment. The mechanical arm comprises a moving mechanism, a steering mechanism and a grabbing mechanism, wherein the steering mechanism is arranged at the bottom of the moving mechanism, the grabbing mechanism is arranged at the bottom of the steering mechanism, and the moving mechanism is composed of a movable box body, a driven shaft, a driving shaft, a driven bevel gear, a driving motor, a driving bevel gear and a driving wheel. According to the mechanical arm, the driving motor and the driving shaft are arranged, the mechanical arm can be driven to move transversely under the action of the driving motor so that the mechanical arm can move rapidly; a lifting hydraulic cylinder is arranged, the height of themechanical arm can be flexibly adjusted, so that the mechanical arm can work for working tables with different heights; and a steering motor, a rotary main shaft, a transmission worm and a transmission worm wheel are arranged, the size of the opening of a clamping claw can be adjusted in multiple angles under the matching of the transmission worm and the transmission worm wheel so that sludge bagswith different sizes can be clamped by the clamping claw.