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Vibration damping structure, vibration damping pad and using method thereof

A technology of vibration-damping structure and vibration-damping pad, which is applied in the field of vibration-damping, can solve problems such as unsatisfactory application, increased vertical dynamic displacement of rails, large damage to rails and fastener springs, etc., so as to reduce train operation safety and Hidden dangers of stability, high comprehensive damping performance, and the effect of improving safety

Inactive Publication Date: 2016-09-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for the vibration reduction measures of fasteners, the data show that the application of elastic fasteners such as rail shock absorber fasteners and pioneer fasteners in my country's subways is not ideal, which induces serious abnormal rail corrugation, and the intensification of corrugation will actually lead to Cause high-frequency vibration of the wheel and rail, resulting in vehicle resonance
The main reason is that the rubber pad rigidity is too soft, so that the vibration energy of the wheel and rail is isolated from the structure under the rail and stays on the rail. The increased dynamic displacement puts the train at risk of derailment

Method used

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  • Vibration damping structure, vibration damping pad and using method thereof
  • Vibration damping structure, vibration damping pad and using method thereof
  • Vibration damping structure, vibration damping pad and using method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: The rail damping pad 1 is composed of several layered periodic units in the thickness direction, and the layered periodic units are formed by overlapping several layers of periodic substructures, and the composition materials of adjacent periodic substructures are different; The constituent materials of the periodic substructure are divided into elastic material 7 and rigid material 8 , preferably, the elastic material 7 can be rubber material or resin material, and the rigid material can be alloy material or metal material 8 . Such as figure 1 shown.

[0030] The thickness dimension of the periodic substructure of each layer in the periodic unit of the rail damping pad 1 is consistent with the vibration wavelength of interest to improve the vibration damping effect, and its width and length match the size of the rail bearing part of the iron backing plate under the rail.

[0031] The shape of the periodic substructure of the rail damping pad 1 is a cuboi...

Embodiment 2

[0034] Embodiment 2: The periodic substructure of the rail vibration damping pad 1 can also be provided with several periodic substructures in the length and width directions. These periodic substructures include holes 9 and fillers 10. The holes must be It is the same structural size, the same regular distribution, and equal intervals in all directions; several columns or cones and filling bodies 10 of other shapes can be arranged in these holes 9, and then laminated with the periodic track plate 1 to form a whole. The longitudinal length and the horizontal width are arranged at regular intervals, such as Figure 5 shown. Preferably, in addition to the form of the columnar periodic slave structure 9, a conical periodic slave structure can also be used, which has a good vibration damping effect and low construction difficulty.

[0035] The period of the rail damping pad 1 should be greater than 3 from the number of holes 9 in the structure and the number of structures in the ...

Embodiment 3

[0037]Embodiment 3: The application of the present invention is not limited to rail transit, and can be put into use in fields requiring vibration reduction measures such as mechanical equipment and buildings after slightly adjusting the structural size. For example, a layer of vibration damping pads with layered periodic structure characteristics can be added to the floor of a residential building to weaken the vibration of the floor and greatly reduce the noise impact of the living activities of the upstairs residents on the downstairs residents. ;The vibration of the hull caused by the operation of the marine machine will not only affect the crew's sense of body, cause ocean noise, but also weaken the strength of the hull. A layer of vibration damping pad with layered periodic structure characteristics is added between the installation plate of the machine and the hull base plate , can effectively weaken the damage caused by the vibration of marine machinery; and the vibrati...

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Abstract

A vibration damping structure and a vibration damping pad with a layered periodic structure, the thickness direction of the vibration damping pad is composed of several layered periodic units, and the layered periodic unit includes several layers of periodic substructures superimposed on each other, Adjacent periodic substructures are composed of different materials; the periodic substructures can also be provided with several periodic substructures in the length and width directions. The damping pad with layered periodic structure features is placed between the concrete sleeper or track slab bearing platform and the rail bottom, and is fixed by a fastener system; the rail vibration damping pad and the sleeper or track slab bearing platform Iron backing plates can also be set between them to improve their supporting strength. The rail damping pad can be used in urban rail transit, high-speed railway, heavy-duty railway, ordinary railway, building structure, machine equipment and bridge structure, which is helpful for its vibration and noise reduction control, and has a simple structure and easy maintenance. Advantages of convenience and flexibility.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction, and relates to a vibration-damping pad structure suitable for urban rail transit, high-speed railway, heavy-duty railway, ordinary railway, building structure, machine equipment, bridge structure and the like and a using method thereof. Background technique [0002] With the continuous development of rail transit technology, more and more attention has been paid to the environmental protection of rail transit, especially the noise and vibration generated by it. [0003] At present, the vibration and noise reduction measures of rail transit mainly start from three aspects: control on the vibration source / sound source (measures such as rail grinding), control on the transmission path (by using elastic fasteners and floating slab tracks, etc.) Recipient / acoustic control. The vibration generated by the wheel-rail system usually uses elastic fasteners to achieve vibration isolation, so as...

Claims

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Application Information

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IPC IPC(8): E01B19/00E01B9/68F16F3/12
CPCE01B19/003E01B9/683F16F3/12
Inventor 杨新文沈剑罡彭洋赵昕王靖贻
Owner TONGJI UNIV
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