The hydraulic inverter stiffness buffer device adopts the hydraulic damping principle, and the damping hole is a variable gap structure to achieve variable stiffness in dynamics. The device consists of a cylinder, a piston, a fuel tank, etc. The adjusting rod is tapered and both ends are cylindrical. In the working state, the piston chamber and the oil tank are fully enclosed. When the piston is close to the bottom, liquid can be kept at the bottom. As the outer diameter of the adjusting rod decreases, the oil drain gap gradually increases, the liquid damping decreases, and the stiffness decreases at a uniform speed. After work, pull out the piston, replenish the oil tank liquid in the piston cavity, and return to the working state. Since the device adopts a hydraulic structure, there are no defects in material aging.
Spring inverter stiffness buffer device
The spring inverter stiffness buffer device adopts a spring pre-loaded deformation mechanism to achieve variable stiffness in dynamics. The device consists of an elastomer, a positioning plate, a buffer spring, etc.
There is also a flexible weight buffer device, which is composed of a rubber pad, an upper platform, a shock-absorbing spring group, and a lower platform. When a weight drop accident occurs, the weight directly impacts the flexible weight buffer device, and the impact energy is absorbed through the deformation of the rubber pad and spring to achieve the purpose of buffering. This device is composed of many buffer units with a complex structure and no substantial change in the functional process. The working mechanism is mainly that the swing arm pulls the double torsion spring to undergo torsional deformation, thereby absorbing energy and serving the purpose of buffering. The effective buffer stroke is insufficient. Through torsion bar spring buffering, even if pre-deformation is adopted, the stiffness is still changing, and the effective buffering stroke is insufficient. In terms of buffering effect, the spring inverter stiffness buffer device makes up for the shortcomings of the flexible weight buffer device.