Variable-curvature friction damping device for amplifying displacement and speed by using lever

The utility model relates to the field of energy dissipation and shock absorption, and discloses a variable curvature friction damping device for amplifying displacement and speed by using a lever, which comprises an upper beam, the middle part of the bottom end of the upper beam is fixedly connected to the top of an upper cantilever wall, and the bottom end of the middle part of the front side of the upper cantilever wall is rotatably connected with the top end of the middle part of the amplifying lever through a first rotating rod. According to the variable-curvature friction damper, after being amplified by the amplifying lever, the variable-curvature friction damper acts on the variable-curvature friction damper, so that the variable-curvature friction damper generates larger relative displacement and relative speed, further, the damper generates larger damping force, the displacement amplitude and the sliding friction force are small under the action of small earthquakes, the energy consumption requireme