Three-stable-state nonlinear vibration absorber of buckling beam structure

The invention discloses a three-stable-state nonlinear vibration absorber of a buckling beam structure. The two ends of a beam are fixed to beam clamping blocks through bolts, and the length and the buckling degree of the beam can be changed by moving the beam clamping blocks; the distance between the beam and the mass block can be changed by moving the sliding groove in the x direction. The mass block moves in the y direction along the linear guide rail, and the guide rod drives the connecting piece to move, so that the buckling beam moves in the x direction along the linear guide rail. Due to the fact that the buckling beam has two stable configurations in the x direction, under the appropriate rod length, when the beam is in the buckling configuration in the x positive direction, the mass block has a stable position, and at the moment, the included angle between the connecting rod and the movement direction of the mass block is 90 degrees. When the beam is bent in the x-negative direction, the mass block h