Annular spring type elastic-plastic cushioning energy absorption device

Abstract

The invention discloses an annular spring type elastic-plastic cushioning energy absorption device which comprises three parts, namely single-conical surface inner circular rings, double-conical surface inner circular rings and double-conical surface elastic-plastic outer circular rings. The inner circular ring part is made of an elastic material which is required to have the material strength higher than that of the elastic-plastic material of the outer circular ring part. All the parts are equal in conical surface angle to ensure fit with one another. Two single-conical surface inner circular rings are arranged at the two ends of the device, and a plurality of double-conical surface inner circular rings and double-conical surface elastic-plastic outer circular rings are arranged alternately in the middle of the device. The inner and outer circular ring parts are equivalent in wall thickness; as the material strength of the inner circular rings is far greater than the material of the outer circular rings, the structural stiffness of the inner circular rings is obviously greater than that of the outer circular rings, and deformation is mainly concentrated on the outer circular rings. The annular spring type elastic-plastic cushioning energy absorption device is simple in structure, and convenient to manufacture and assemble. Each part is simple in stress-strain state, and even and stable in deformation, and therefore, the material utilization rate is high. Besides, the cushioning energy absorption device is reliable and stable in cushioning force, large in compression stroke and high in cushioning capacity; more importantly, a simple repetition structure is adopted to facilitate standardized and serialized production, and then the designers of various use units can choose freely and flexibly.

Description

technical field [0001] The invention relates to a buffer device suitable for vehicles, machinery and other fields, in particular to an annular spring elastic-plastic buffer energy-absorbing device. Background technique [0002] Ring spring is a commonly used buffer, which is composed of multiple outer rings with inner cones and inner rings with outer cones with the same cone angle. The size and number of inner and outer rings can be adjusted according to load and The deformation requirements are determined. When the ring spring bears the axial load, the inner and outer rings squeeze each other and slide relative to each other along the conical surface to generate axial displacement, which acts as a spring. At the same time, a huge friction force is generated between the inner and outer rings. It can dissipate a large amount of energy during the deformation process, and is often used in occasions where space is limited and strong cushioning is required. Traditional ring spri...

AI Technical Summary

Problems solved by technology

The main defect of this type of design is that the size of the buffer device needs to be determined according to the load force amplitude and buffer stroke of the specific application, including the diameter, wall thickness and length of the deformed tube, as well as the relevant dimensions of the corresponding inner ejector rod. In addition, pre-expansion and other treatments must be performed on the deformed tube

Such a result is that for each application, it needs to be designed and manufactured separately, which in fact limits the large-scale application of this type of device.

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