Spherical hinge rubber elastic element rigidity changing method, and rubber elastic element and manufacturing method thereof

Abstract

The invention discloses a spherical hinge rubber elastic element rigidity changing method, and a rubber elastic element and a manufacturing method thereof. Partial rubber materials are removed symmetrically, and different rigidity is provided through the size of the contact surface and the rubber deformation restriction degree at different stress stages to realize rigidity change. The symmetrical removal of the partial rubber materials is that: 3 to 5 circular spaces are dug on the surface of a rubber elastomer along the periphery, so that after the rubber elastomer is combined with an outer metal sleeve, the outer metal sleeve and the rubber elastomer are partially contacted under the no-load condition and are positioned in a 3-5 circular air isolation area, and spaces for the rubber to protrude at two ends are very small; meanwhile, after the rubber elastomer is combined with the outer metal sleeve, an annular gap zone is reserved between the rubber elastomer and the inner lateral surface of the outer metal sleeve. When the spherical hinge rubber elastic element is stressed, the spherical hinge rubber elastic element rigidity change is realized by changing an excircle contact surface and a lateral contact surface between the rubber elastomer and the outer metal sleeve at different stages.

Description

technical field [0001] The invention relates to a variable stiffness scheme of an elastic element and a component product, in particular to a ball joint type rubber elastic component product and its variable stiffness method, a component product and a manufacturing method thereof, and is mainly used for rubber used in bogies of various locomotives and vehicles. Among the elastic components, it is also suitable for any vibration-damping elastic connection parts such as construction machinery. Background technique [0002] Ball joint type rubber elastic element is a commonly used rubber-metal composite damping element, which can be widely used in various vibration damping places, especially in the bogies of rolling stock. [0003] Different from metal materials, rubber materials are typical nonlinear materials, so elastic elements made of rubber materials will also show nonlinear stiffness properties. For example, the relationship between load and deformation of steel springs ...

AI Technical Summary

Problems solved by technology

However, the demand for this characteristic cannot be achieved by the current elastic ball joints, because the existing ball joints mainly rely solely on the nonlinearity of the rubber material to achieve variable stiffness, so it is difficult to produce such a sudden change in stiffness. Therefore, it is necessary to make up for this deficiency through the innovation of the elastic spherical hinge structure

Images