2results about How to "Stiffness adjustment" patented technology

This utility model belongs to the technical field of shock absorbers for two-wheeled vehicles, and particularly relates to a variable stiffness air spring shock absorber, comprising: an outer cover, a shock absorber body movably passing through one side of the outer cover, and connecting members provided on both the side of the shock absorber body away from the outer cover and the side of the outer cover away from the shock absorber body, the two connecting members being used to connect to an external support point; wherein, the piston rod of the shock absorber body is located inside the outer cover and connected to the side of the outer cover away from the shock absorber body, and the shock absorber body is slidably connected to the outer cover via a floating piston sleeved on the outside. This utility model adjusts the stiffness of the air spring by inflating or contracting the air spring and contacting it with the floating piston at different diameters, thereby improving the comfort of the air spring shock absorber, and thus achieving continuous adjustment of the shock absorber stiffness to meet diverse needs for comfort and stability under different working conditions.

The utility model provides a rigidity adjustable prestressed concrete pressure bearing plate, which comprises a rectangular concrete structure pressure bearing plate, a prestressed tension system and a power tension system, the rectangular concrete structure pressure bearing plate comprises a reinforced concrete bottom plate and a prestressed net, the prestressed net is formed by arranging a plurality of prestressed tendons in a staggered manner, and the prestressed tendons are arranged on the reinforced concrete bottom plate. The two ends of each prestressed tendon penetrate through the reinforced concrete bottom plate to be connected with the tensioning locking ends. The prestress tensioning system comprises a plurality of prestress tensioning assemblies, and the prestress tensioning assemblies are installed on the prestressed tendons between the tensioning locking ends and the reinforced concrete bottom plate. The power tensioning system comprises eight power tensioning assemblies, and each power tensioning assembly is connected with the corresponding prestress tensioning assembly located on the same side through two inhaul cables. According to the prestressed concrete bearing plate with the adjustable rigidity, in the static load test process, the prestress can be tensioned step by step along with step-by-step increase of loads, and the rigidity of the bearing plate is adjusted step by step.