Large travel air spring and suspension

The invention discloses a large travel air spring. By changing the shape of a piston, the axial direction of the piston inclines to a certain angle from the normal direction of a mounting surface, sothat the included angle between the piston axis and the normal direction of the mounting surface of an air bag is reduced, requirements of a large travel and large angle are met in an arranged designspace of the air bag, meanwhile, the deflection and deformation of the air bag are reduced, the service life of the air bag is prolonged, the connection stress of the piston is reduced, the connectionfirmness is improved, and the overall service life of products is prolonged. The invention further discloses a large travel air suspension. 本发明公开了一种大行程空气弹簧，通过改变活塞形状，使得活塞的轴向从安装面的法向倾斜一定夹角，从而减少活塞轴线与空气气囊安装面法向之间的夹角，在设定的气囊设计空间内满足大行程、大角度的要求，同时起到减轻气囊曲挠形变、延长使用寿命，降低活塞的连接应力，提高连接牢固程度，延长产品的整体使用寿命。本发明还公开了一种大行程空气悬架。