Multi-stage floating slab track vibration isolator
By setting up multiple vibration-absorbing components and an outer sleeve inner cylinder mating structure in parallel in the floating plate track isolator, the existing vibration isolator poor vibration isolation performance and noise problems are solved, and multi-stage vibration damping and stable vibration isolation performance are achieved.
Patent Information
- Application Number
- CN202422027876.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing floating plate track isolators have poor vibration isolation performance, large vibration, and are prone to noise. The internal vibration isolation spring on the isolators have limited pressure bearing capacity and are prone to damage.
A multi-stage floating plate track isolator is designed. By providing at least three sets of vibration-absorbing components in the inner cavity of the inner cylinder, the combined structure of elastic support and mass blocks can absorb vibration kinetic energy, and ensure the stable performance of the vibration isolator through the cooperation between the outer sleeve and the inner cylinder.
It realizes multi-stage vibration reduction effect, reduces noise generation, solves the problems of poor vibration isolation performance in empty vehicle states and excessive vertical displacement of the track in heavy vehicle states, and improves the maintenance and replacement of the vibration isolator.
Smart Images
Figure CN222990500U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of machinery, in particular to rail transit technology, and specifically to a multi-stage floating slab track vibration isolator. Background Art
[0002] While providing convenience for people, rail transit is accompanied by vibration all the time. The floating slab track is an effective method to solve the vibration and noise problems in rail transit. The floating slab track isolates the vibration of the track slab from the foundation by setting elastic vibration isolators under the track slab, so as to achieve the purpose of vibration isolation and noise reduction.
[0003] However, in the prior art, the vibration isolation performance of the vibration isolator used in the floating slab track is poor, the vibration is large, and it is easy to generate noise. The bearing capacity of the inner vibration isolation spring on the vibration isolator is limited, and it is often damaged due to excessive pressure on the vibration isolator. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a multi-stage floating slab track vibration isolator, which overcomes the deficiencies of the prior art, can absorb vibration energy to a certain extent, achieves the purpose of multi-stage vibration reduction, and is convenient for replacement and maintenance.
[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0006] A multi-stage floating slab track vibration isolator includes an outer sleeve and an inner cylinder. The outer sleeve is movably sleeved outside the inner cylinder. An upper cover plate is installed at the upper end of the outer sleeve. Two force transmission pressing plates are arranged at intervals up and down on the upper inner side wall of the outer sleeve. A bearing plate is installed between the two force transmission pressing plates. The upper cover plate is pressed on the upper surface of the upper force transmission pressing plate, and a notch is provided in the lower force transmission pressing plate;
[0007] At least three groups of vibration reduction components are arranged in parallel from top to bottom in the inner cavity of the inner cylinder. The upper end surface of the vibration reduction component at the uppermost position passes through the notch and is connected to the bearing plate.
[0008] Preferably, each vibration reduction component includes an upper substrate, a lower substrate and an elastic support member. An elastic element is fixedly installed on the lower surface of the upper substrate. A mass block is fixedly installed on the lower surface of the elastic element. There is a certain distance between the mass block and the lower substrate; the upper and lower ends of the elastic support member are respectively abutted against the lower surface of the upper substrate and the upper surface of the lower substrate;
[0009] The upper substrate of the vibration reduction component at the uppermost position is connected to the bearing plate by bolts.
[0010] Preferably, the elastic support member is sleeved outside the elastic element and the mass block.
[0011] Preferably, an adjusting cushion plate is arranged on the upper surface of the bearing plate. The bearing plate and the adjusting cushion plate are both installed between two force - transmitting pressing plates. The adjusting cushion plate, the bearing plate and the upper substrate of the uppermost damping component are fixedly connected to each other by bolts.
[0012] Preferably, a triangular - like notch is formed in the middle of the two force - transmitting pressing plates. The bearing plate and the adjusting cushion plate are both of triangular - like plate structures.
[0013] The utility model provides a multi - stage floating slab track vibration isolator, which has the following beneficial effects: through the combined action of a plurality of damping components arranged side by side from top to bottom, the purpose of multi - stage vibration damping can be achieved. Thus, not only the vibration damping effect is effectively guaranteed, but also the generation of low noise can be reduced, and the defects of poor vibration isolation performance in the empty - car state and excessive vertical displacement of the track in the heavy - car state brought by ordinary steel spring vibration isolators are effectively solved. In addition, by arranging an outer sleeve and an inner cylinder, the outer sleeve can move up and down on the outer surface of the inner cylinder, which also plays a certain guiding role in the movement of the outer sleeve to ensure that the outer sleeve does not deviate when it is forced to move downward. Thus, through the cooperation of the outer sleeve and the inner cylinder and the combined action of a plurality of damping components, the vibration isolator can have stable vibration isolation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the prior art.
[0015] Figure 1 Structural schematic diagram of the present utility model;
[0016] Figure 2 Top view of the outer cylinder of the vibration isolator in the present utility model;
[0017] Explanation of the reference numerals in the drawings:
[0018] 1. Outer sleeve; 2. Inner cylinder; 3. Upper cover plate; 4. Force - transmitting pressing plate; 5. Bearing plate; 6. Upper substrate; 7. Lower substrate; 8. Elastic support; 9. Elastic element; 10. Mass block; 11. Bolt; 12. Adjusting cushion plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] To make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the drawings in the present utility model.
[0020] Embodiment 1, as Figures 1 to 2As shown in the figure, a multi-stage floating slab track isolator includes an outer sleeve 1 and an inner cylinder 2. The outer sleeve 1 is movably sleeved outside the inner cylinder 2. An upper cover plate 3 is installed at the upper end of the outer sleeve 1. Two force-transmitting pressure plates 4 are arranged at intervals up and down on the upper part of the inner side wall of the outer sleeve 1. A bearing plate 5 is installed between the two force-transmitting pressure plates 4. The upper cover plate 3 is pressed against the upper surface of the upper force-transmitting pressure plate 4. A notch is provided in the lower force-transmitting pressure plate 4.
[0021] At least three groups of damping components are arranged in the inner cavity of the inner cylinder 2 from top to bottom. The upper end surface of the damping component located at the uppermost part passes through the notch and is connected to the bearing plate 5.
[0022] Working principle:
[0023] When a train passes by, it will generate downward vibration kinetic energy on the floating slab track isolator. At this time, the pressure is transmitted to the damping components through the force-transmitting pressure plates 4, so that the elastic support members in each damping component are compressed by force to absorb a certain amount of vibration. In addition, in this embodiment, by setting the outer sleeve 1 and the inner cylinder 2, the outer sleeve 1 can move up and down on the outer surface of the inner cylinder 2, which also plays a certain guiding role in the movement of the outer sleeve 1, ensuring that the outer sleeve 1 does not deviate when it is forced to move downward. In addition, through the combined action of multiple damping components arranged side by side from top to bottom in the present utility model, the purpose of multi-stage damping can be achieved. Thus, not only the damping effect is effectively guaranteed, but also the generation of low noise can be reduced, effectively resolving the defects of poor vibration isolation performance in the empty car state and excessive vertical displacement of the track in the heavy car state brought by ordinary steel spring isolators; through the cooperation of the outer sleeve 1 and the inner cylinder 2 and the combined action of multiple damping components, the vibration isolator can be ensured to have stable vibration isolation performance. And, based on the improvement of the original steel spring outer cylinder, it has high adaptability, simple structure, easy disassembly and assembly, and is conducive to manufacturing and maintenance.
[0024] Embodiment 2, as a further preferred solution of Embodiment 1, each damping component includes an upper substrate 6, a lower substrate 7 and an elastic support member 8. An elastic element 9 is fixedly installed on the lower surface of the upper substrate 6. A mass block 10 is fixedly installed on the lower surface of the elastic element 9. There is a certain distance between the mass block 10 and the lower substrate 7. The upper and lower ends of the elastic support member 8 are respectively abutted against the lower surface of the upper substrate 6 and the upper surface of the lower substrate 7. The upper substrate 6 of the damping component located at the uppermost part is connected to the bearing plate 5 by bolts 11. In this embodiment, the elastic support member 8 is preferably a spring, and the elastic element 9 is made of rubber material. Among them, the elastic support member 8 is sleeved outside the elastic element 9 and the mass block 10.
[0025] Thus, during use, first, the vibration kinetic energy is transmitted downward through the force-transmitting pressure plate 4 at the upper end to the upper substrate 6. Since there is a certain distance between the mass block 10 and the lower substrate 7, the upper substrate can have a certain downward displacement, causing the elastic support member 8 to be compressed. Thus, the elastic support member 8 can buffer the downward vibration kinetic energy to a certain extent. And through the action of the suspended upper substrate 6, elastic element 9, and mass block 10, the vibration kinetic energy can be effectively absorbed. Then, through the combined action of multiple vibration damping components arranged in parallel, the purpose of multi-stage vibration damping and vibration isolation can be achieved.
[0026] Embodiment 3, as a further preferred solution of Embodiment 2, an adjusting cushion plate 12 is provided on the upper surface of the bearing plate 5. The bearing plate 5 and the adjusting cushion plate 12 are both installed between the two force-transmitting pressure plates 4. The adjusting cushion plate 12, the bearing plate 5, and the upper substrate 6 of the uppermost vibration damping component are fixedly connected to each other by bolts 11. By means of the adjusting cushion plate 12, the downward movement amount of the entire upper substrate 6 and the elastic force of the elastic support member 8 can be adjusted to adapt to tracks in different states.
[0027] Embodiment 4, as a further preferred solution of Embodiment 3, a triangular-like notch is formed in the middle of the two force-transmitting pressure plates 4. The bearing plate 5 and the adjusting cushion plate 12 are both of triangular-like plate structures. By forming a triangular-like notch in the middle of the force-transmitting pressure plate 4, and the bearing plate 5 and the adjusting cushion plate 12 are of triangular-like plate structures, it is convenient to directly take out and replace the bearing plate 5 and the adjusting cushion plate 12 from the triangular-like notch of the force-transmitting pressure plate 4 for later maintenance.
[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A multi-stage floating plate track vibration isolator, characterized in that: It comprises an outer sleeve (1) and an inner sleeve (2), wherein the outer sleeve (1) is movably sleeved on the outside of the inner sleeve (2), an upper cover plate (3) is installed on the upper end of the outer sleeve (1), two force transmission pressure plates (4) are arranged at intervals above and below the inner wall of the outer sleeve (1), a bearing plate (5) is installed between the two force transmission pressure plates (4), the upper cover plate (3) is pressed on the upper surface of the upper force transmission pressure plate (4), and a notch is arranged in the lower force transmission pressure plate (4); At least three groups of vibration reduction components are arranged in parallel from top to bottom in the inner cavity of the inner cylinder (2), and the upper end surface of the vibration reduction component located at the top passes through the notch and is connected to the bearing plate (5).
2. A multi-stage floating plate track isolator according to claim 1, characterized in that: Each of the vibration reduction components comprises an upper base plate (6), a lower base plate (7) and an elastic support member (8); an elastic element (9) is fixedly mounted on the lower surface of the upper base plate (6); a mass block (10) is fixedly mounted on the lower surface of the elastic element (9); a certain distance is provided between the mass block (10) and the lower base plate (7); upper and lower ends of the elastic support member (8) respectively abut against the lower surface of the upper base plate (6) and the upper surface of the lower base plate (7); The upper base plate (6) located at the uppermost vibration reduction assembly is connected to the bearing plate (5) via bolts (11).
3. A multi-stage floating plate track vibration isolator according to claim 2, characterized in that: The elastic support member (8) is sleeved on the outer sides of the elastic element (9) and the mass block (10).
4. The multi-stage floating plate track isolator according to claim 2, characterized in that: An adjusting pad (12) is provided on the upper surface of the bearing plate (5); the bearing plate (5) and the adjusting pad (12) are both installed between two force transmission pressure plates (4); and the adjusting pad (12), the bearing plate (5) and the upper base plate (6) of the uppermost vibration reduction assembly are connected and fixed to each other via bolts (11).
5. A multi-stage floating plate track vibration isolator according to claim 4, characterized in that: A triangular notch is provided in the middle of the two force transmission pressure plates (4), and the bearing plate (5) and the adjusting pad (12) are both triangular plate structures.