Ball screw transmission mechanism suitable for portable contact net transmission system

The utility model provides a ball screw transmission mechanism suitable for portable contact net transmission system, include lead screw, nut, guide rail, slider, nut connecting block, stiff end support, move about and hold support, bottom plate, driving motor and motor frame. The nut is installed on the lead screw, and lead screw one end and driving motor link to each other, and driving motor rotating band kinetodesma thick stick rotates, and lead screw axial motion can be followed to the nut. The stiff end support to support with the end that moves about and install at the lead screw both ends through the bearing, install on the bottom plate bottom of two supports. Driving motor is connected to motor frame one side, and the opposite side is installed on the bottom plate. The lead screw both sides set up a set of slider and guide rail respectively, and the slider is installed on the guide rail, and the guide rail is installed on the bottom plate. The utility model discloses with current transmission structur