Linear control device

The utility model belongs to the technical field of mechanical control, and particularly relates to a linear control device. The device comprises a movable line, the working end of which is fixed on the target object; the fixed seat is used for being fixed on an installation object, and the fixed end of the movable line is fixedly connected to the fixed seat; and the rotating wheel is rotationally arranged on one side of the fixed seat on which the movable wire is mounted, and is provided with an arc-shaped winding part which can be wound by the movable wire. The moving wire is fixed between the fixed seat and the target object, when the rotating wheel rotates clockwise, the arc-shaped wire winding part equivalently abuts against the moving wire to rotate, the original line arrangement of the moving wire is changed, the length of the moving wire in the fixed seat is increased, and therefore pulling of the moving wire is achieved, and the moving wire is prevented from being damaged. And remote target object co