Dual-telescopic mechanical arm

The utility model relates to the field of mechanical processing equipment, in particular to a dual-telescopic mechanical arm. The dual-telescopic mechanical arm comprises a base and a motor, wherein a driving nut is arranged on the base in a rotatable manner and is connected with the motor in a transmission manner; a screw rod is arranged in the driving nut in a penetrating manner; fixed seats are arranged at two ends of the screw rod and are fixedly connected with the screw rod; the fixed seats at the two ends of the screw rod are connected with a mechanical arm I; guide wheels are arranged on the two fixed seats; a transmission belt is wound between the guide wheels; the transmission belt at the position corresponding to the base is fixed with the base; a mechanical arm II is fixed on the transmission belt, which is opposite to the other side of the base, on the guide wheels; the mechanical arm II is connected with the mechanical arm I in a sliding manner. By the arrangement of the mechanical arm I and the mechanical arm II, one piece of power can drive the two mechanical arms to do stacking motion, and the motion rate can be increased; furthermore, under the condition of the same length, the stroke can be doubled, and the usability is improved.