LIQUID COMPOSITE SPRING

A liquid composite spring for vehicles, in particular rail vehicles, includes: a core shaft (1); an outer sleeve (2) arranged on an upper portion of the core shaft (1), the upper portion of the core shaft (1) being located inside the outer sleeve (2) while the lower portion of the core shaft (1) being located outside the outer sleeve (2); an upper liquid chamber (4) formed in an upper portion of the outer sleeve (2), a lower end of the upper liquid chamber (4) being connected to a top of the core shaft (1); and a lower liquid chamber (5) formed in a lower portion of outer sleeve (2), the lower liquid chamber (5) and the upper liquid chamber (4) being connected with each other through a metal-rubber main spring (3). At least one flow channel body (31) is provided in the metal-rubber main spring (3), so that liquid in the upper liquid chamber (4) and liquid in the lower liquid chamber (5) are communicated with each other through the flow channel body (31). The liquid composite spring has the function of reducing vibration, and can provide variable rigidness and dampening effect.