Optical-cable torsion test equipment

The utility model relates to the optical-cable torsion test equipment. A transmission device of the optical-cable torsion test equipment comprises a crank sliding block mechanism, a sliding block of the crank sliding block mechanism is a bar-shaped sliding block, transmission teeth are formed on one side surface of the bar-shaped sliding block, and the sliding block with teeth is engaged with a gear rotationally arranged on a stand to form a gear and gear rack transmission mechanism. A torsion arm of the optical-cable torsion test equipment is fixed on a rotating shaft of the gear, and the rotating central line of the torsion arm and the central line of a gear rotating shaft are in collineation. The electric motor of the utility model drives the crank of the crank sliding block mechanism to rotate, the crank drives a connection rod to carry out planar movement, the connection rod drives the sliding block to carry out reciprocating linear movement, and the sliding block drives the gearto rotate in a reciprocat