Special-shaped spring with auxiliary spring layer

The invention relates to the field of special-shaped springs, in particular to a special-shaped spring with an auxiliary spring layer. The special-shaped spring involves a connecting plate, a limitingcylinder is arranged in the middle of the upper end of the connecting plate, a circular through hole is formed in the outer surface of the upper end of the limiting cylinder in a penetrating mode, and a limiting column is arranged on the inner side of the circular through hole; a limiting plate is arranged in the part, at the lower end of the limiting column, of the interior of the limiting cylinder; an auxiliary spring is arranged in the part, at the lower end in the limiting plate, of the interior of the limiting cylinder; the special-shaped spring is arranged on the outer side, at the upper end of the connecting plate, of the limiting column; a connecting block is arranged in the middle of the lower end of the connecting plate; a spring base is arranged on the outer side, at the lowerend of the connecting plat