Abstract: An air spring provided by the present application comprises a top plate, a diaphragm, a first rubber metal spring and a second rubber metal spring; the diaphragm is arranged between the top plate and the first rubber metal spring; the first rubber metal spring is hollow to form a cavity, and the cavity of the first rubber metal spring penetrates through a top of the first rubber metal spring in a vertical direction, and the top of the first rubber metal spring is connected to a first support, and a top of the first support corresponds to the top plate to come into contact with the top plate when the diaphragm is out of air; the second rubber metal spring is fixedly inserted in the cavity of the first rubber metal spring; a top of the second rubber metal spring is connected to a second support, and a top of the second support corresponds to the top plate to come into contact with the top plate when the diaphragm is out of air; and, when the diaphragm is inflated, there is a height difference ?h between the top

Abstract: Provided are an auxiliary spring, a new-belted diaphragm and an air spring. The air spring comprises an auxiliary spring and a new-belted diaphragm arranged above the auxiliary spring, the auxiliary spring comprises a rim (1), which has a reversed convex structure and has a downward support column on a bottom surface thereof; a rubber piece (2), a center of which has a concave hole for enclosing the whole support column and a top of which contacts with a concave bottom surface of the rim (1); and a base plate (3); the new-belted diaphragm comprises a top cover (41) and a diaphragm body (42) that has a hollow structure and is installed below the top cover (41); a top of the diaphragm body (42) is an annular opening and is connected with the top cover (41), and a middle vertical portion thereof is a girdle portion.