Constant-force spring hanger

The utility model relates to the technical field of spring hanging brackets, in particular to a constant-force spring hanging bracket which comprises a shell and a hanging rod arranged below the shell. The suspender extends upwards into the shell, a pressing plate is fixed to the upper end of the suspender, a lower bearing plate slidably connected to the periphery of the suspender in a sleeving mode is arranged in the shell, the lower bearing plate is slidably connected with the inner wall of the shell, and a main spring arranged on the periphery of the suspender in a sleeving mode is connected between the lower bearing plate and the pressing plate. The two synchronous lead screws are designed, each synchronous lead screw can exert supporting force on the upper bearing plate and the lower bearing plate, four supporting force is exerted on the upper bearing plate and the lower bearing plate, and therefore the supporting force exerted by the synchronous lead screws on the upper bearing plate and the lower beari