Liquid composite spring

A liquid composite spring, comprising:

• a core shaft;
• an outer sleeve arranged on an upper portion of the core shaft, wherein the upper portion of the core shaft is located inside the outer sleeve, while a lower portion thereof is located outside the outer sleeve;
• an upper liquid chamber formed in an upper portion of the outer sleeve, a lower end of the upper liquid chamber being connected to a top of the core shaft;
• and
• a lower liquid chamber formed in a lower portion of the outer sleeve, the lower liquid chamber and the upper liquid chamber being connected with each other through a metal-rubber main spring,
• wherein at least one flow channel body is provided in the metal-rubber main spring, so that liquid in the upper liquid chamber and liquid in the lower liquid chamber are communicated with each other through the at least one flow channel body,
• wherein the metal-rubber main spring includes a rubber body, a middle portion and an outside of which are connected to the core shaft and the outer wall, respectively,
• wherein the at least one flow channel body is an annular flow channel body arranged in the rubber body, and at least one flow channel is arranged in the annular flow channel body, wherein the at least one flow channel is configured to provide liquid communication between the upper liquid chamber and the lower liquid chamber, and generate a certain damping force during flow of the liquid, and
• wherein the at least one flow channel body is a rigid metal damping flow channel plate, and the at least one flow channel comprises multiple flow channels evenly arranged in the metal damping flow channel plate.