And working platform can move along horizontal linear track

The utility model discloses a working platform capable of moving along a horizontal linear track. Technology belonging to lifting working platform, when the position of an existing lifting working platform is not changed, the existing lifting working platform is difficult to reach a larger range for operation. The device comprises a first rotary device, a rotary table, an arm support, a second rotary device and an operation platform. The first rotary device drives the rotary table to rotate around a first vertical shaft; the arm frame comprises a variable-amplitude arm, a telescopic arm and aswing arm; the variable-amplitude arm is assembled on the rotary table and is driven by the variable-amplitude oil cylinder to swing up and down; the telescopic arm is assembled on the variable-amplitude arm and is driven by the telescopic oil cylinder to stretch out and draw back; the swing arm is assembled at the end, away from the rotary table, of the telescopic arm and driven by a swing arm oil cylinder to swing up an