Vibration reduction connecting piece and pre-compression type track vibration reduction structure

Abstract

The invention belongs to the technical field of rail traffic, and particularly relates to a vibration reduction connecting piece and a pre-compression type rail vibration reduction structure. The vibration reduction connecting piece comprises an outer sleeve and an inner sleeve which are coaxially arranged, and an elastic sleeve arranged between the outer sleeve and the inner sleeve; at least two kerfs are formed in the outer sleeve and / or the inner sleeve in an annular array around the axis of the outer sleeve and / or the inner sleeve; and the at least two kerfs cut the outer sleeve and / or the inner sleeve into at least two parts. After the vibration reduction connecting piece is installed, the outer sleeve and the inner sleeve have a certain compression force on the elastic sleeve, so that the outer sleeve and the inner sleeve are tightly attached to an installation hole and a spike, large transverse rigidity can be provided, part loss caused by friction between parts is avoided, and the connection stability of the shock absorber is guaranteed. Compared with pure rigid connection of the spike and the installation hole, the stability of the spike, the friction vibration and noise between the spike and the shock absorber and the vertical or transverse shock absorption and transition performance are greatly improved; and compared with the mode that only the elastic sleeve is arranged between the spike and the mounting hole, the connecting rigidity and the connecting stability are better.

Description

technical field [0001] The invention belongs to the technical field of rail transportation, and in particular relates to a vibration-damping connector and a pre-compression rail vibration-damping structure. Background technique [0002] With the growth of social economy and the expansion of major domestic urban circles, people's requirements for railway vibration reduction (and ride comfort) are getting higher and higher, resulting in the emergence of various vibration reduction connectors. [0003] The main body of the vibration-damping connector is almost an elastic body, which is arranged between the anchoring part of the sleeper and the part carrying the rail. At present, the conventional design concept is non-locking, which also achieves a certain degree of vibration and noise reduction. Effect. However, when the rails vibrate, the anchored parts and the parts carrying the rails will generate relative motion and generate noise. For this problem, the currently conceivab...

AI Technical Summary

Problems solved by technology

The former of the above two methods is generally effective in eliminating noise, and there may be gaps between components due to material loss in the form of rigid insulating materials under long-term friction. Although the latter can eliminate part of the noise, it can only provide small lateral stiffness or In the case of stress concentration, the connection rigidity and stability need to be improved

[0004] In addition, the main components of the existing double-layer damping connector include locking rings, locking cover plates, spiral spikes, spring washers, flat washers, upper iron backing plates, lower iron backing plates, elastic backing plates under rails, middle Elastic backing plate, insulating backing plate under the board, insulating gauge block, spring bar, a large number of parts, inconvenient installation and maintenance

Higher installation height due to more vertical components

The elastic backing plate is separated from the iron backing plate, and there is a risk of wearing the elastic backing plate during use. As time goes by, the effect of vibration and noise reduction will become worse and worse

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