CN117569382A - Vibration absorber for subway vehicle base cover plate - Google Patents
Vibration absorber for subway vehicle base cover plate Download PDFInfo
- Publication number
- CN117569382A CN117569382A CN202311779108.0A CN202311779108A CN117569382A CN 117569382 A CN117569382 A CN 117569382A CN 202311779108 A CN202311779108 A CN 202311779108A CN 117569382 A CN117569382 A CN 117569382A
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- Prior art keywords
- vibration
- bottom plate
- top plate
- viscous damper
- absorber
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 42
- 230000035939 shock Effects 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to the field of building vibration reduction, and discloses a vibration absorber for a base cover plate of a metro vehicle, which comprises a fixed frame, a counterweight mass block, a vibration absorbing mass block and a spring assembly, wherein the fixed frame comprises a top plate and a bottom plate positioned below the top plate; the device further comprises a viscous damper, wherein the viscous damper is arranged between the top plate and the bottom plate. The invention can effectively control the vertical vibration of the cover plate structure caused in the running process of the train through the arrangement of the multi-layer vibration reduction structure.
Description
Technical Field
The invention relates to the field of building vibration reduction, in particular to a vibration absorber for a base cover plate of a metro vehicle.
Background
When a subway train frequently runs, vertical vibration generated by wheel-rail interaction is transmitted to an upper cover building in a vibration wave mode through a rail foundation, a foundation and a vehicle foundation cover plate structure, so that the cover plate and the upper cover building structure are easy to vibrate, secondary structural noise is induced, and normal life and working environment quality of people are influenced.
A variety of vibration absorbers are widely used to alleviate this problem, however, there are still many problems in the application of the existing vibration absorbers to the vehicle base cover plate, such as high manufacturing cost, complicated installation, and the like. In view of this, there is an urgent need for a vibration absorber that is simple in structure, convenient to install, and economical.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the utility model provides a shock absorber for subway vehicle base cover plate through setting up multilayer damping structure, can effectively control the apron structure vertical vibration that causes in the train running.
In order to solve the technical problems, the invention provides a vibration absorber for a metro vehicle base cover plate, which comprises a fixed frame, wherein the fixed frame comprises a top plate and a bottom plate positioned below the top plate, a counterweight mass block is detachably arranged above the top plate, a vibration absorbing mass block is fixedly connected below the top plate, a spring assembly is arranged below the vibration absorbing mass block, one end of the spring assembly is connected with the vibration absorbing mass block, and the other end of the spring assembly is connected with the bottom plate;
the device further comprises a viscous damper, one end of the viscous damper is connected with the top plate, and the other end of the viscous damper is connected with the bottom plate.
Further, at least four viscous dampers are arranged, and a plurality of viscous dampers are arranged around the outer edge of the vibration absorption mass block at intervals.
Further, the viscous damper is vertically arranged between the top plate and the bottom plate.
Further, the two ends of the viscous damper are provided with connecting supports, one end of the viscous damper is connected with the top plate through the connecting supports, the other end of the viscous damper is connected with the bottom plate through the connecting supports, the two ends of the viscous damper are provided with through holes which penetrate through the connecting supports, the outer sides of the connecting supports are provided with communication holes which are correspondingly arranged with the through holes, and bolts used for fixing the viscous damper and the connecting supports are screwed in the through holes and the communication holes.
Further, the connection support is a hinge support.
Further, the spring assemblies are provided with a plurality of groups, and the plurality of groups of spring assemblies are installed between the shock absorbing mass block and the bottom plate at intervals.
Further, the spring assembly comprises a telescopic spring and fixing seats positioned at two ends of the telescopic spring, the fixing seats comprise a first seat body and a second seat body, the first seat body and the second seat body are oppositely arranged, one end of the first seat body is connected with the vibration absorbing mass block, the other end of the first seat body is connected with the telescopic spring, one end of the second seat body is connected with the bottom plate, and the other end of the second seat body is connected with the telescopic spring.
Further, the method comprises the steps of. The area of the bottom plate is larger than that of the top plate.
Further, the outer edge of the bottom plate is provided with a connecting hole, and the connecting Kong Naluo is connected with bolts for fixing the bottom plate and the subway vehicle base cover plate.
Compared with the prior art, the vibration absorber for the metro vehicle base cover plate has the beneficial effects that:
the invention installs the counterweight mass block, the vibration absorbing mass block and the spring component in the fixing frame by arranging the fixing frame, the counterweight mass block, the vibration absorbing mass block and the spring component,
wherein,
the fixed mount comprises a top plate and a bottom plate, so that the counterweight mass block, the vibration absorbing mass block and the spring assembly are fixed on the ground iron base ground cover plate;
when the cover plate structure vibrates, the spring assembly is arranged between the vibration absorbing mass block and the bottom plate, so that vertical vibration energy of the cover plate can be primarily absorbed and dispersed;
the vibration absorbing mass block generates a force in the opposite direction to the vibration of the cover plate structure through the inertia action of the vibration absorbing mass block, so that part of the vibration energy of the structure is counteracted;
the counterweight mass block is arranged above the top plate, and the vibration-proof frequency of the vibration absorber is adjusted by adding or reducing the counterweight mass block, so that the vibration energy is further weakened;
the invention can effectively control the vertical vibration of the cover plate structure caused in the running process of the train through the arrangement of the multi-layer vibration reduction structure.
Drawings
Fig. 1 is a front view of a vibration absorber for a metro vehicle floor deck in accordance with some embodiments of the present invention.
Fig. 2 is a side view of a vibration absorber for a metro vehicle floor deck in accordance with some embodiments of the present invention.
Fig. 3 is a top view of a vibration absorber for a metro vehicle floor deck in accordance with some embodiments of the present invention.
Fig. 4 is a schematic view of the installation position of a vibration absorber for a metro vehicle floor panel of some embodiments of the present invention at the vehicle floor panel.
In the figure, 10, a fixing frame; 11. a top plate; 12. a bottom plate;
20. a counter weight mass;
30. a shock absorbing mass;
40. a spring assembly; 41. a telescopic spring; 42. a fixing seat; 421. a first base; 422. a second seat body;
50. a viscous damper; 51. the connecting support is connected; 52. a bolt;
60. a vibration absorber; and
70. and a cover plate.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. in the present invention are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 4, a vibration absorber 60 for a metro vehicle base cover 70 according to a preferred embodiment of the present invention includes a fixing frame 10, a counterweight block 20, a vibration absorbing mass block 30, and a spring assembly 40, where the fixing frame 10 includes a top plate 11 and a bottom plate 12 located below the top plate 11, the counterweight block 20 is detachably mounted at an upper center position of the top plate 11, the vibration absorbing mass block 30 is mounted at a lower center position of the top plate 11, the spring assembly 40 is mounted below the vibration absorbing mass block 30, one end of the spring assembly 40 is fixedly connected with the vibration absorbing mass block 30, and the other end is fixedly connected with the bottom plate 12; and further comprises a viscous damper 50, said viscous damper 50 being arranged between said top plate 11 and said bottom plate 12.
Based on the technical characteristics, the counterweight mass block, the vibration absorbing mass block and the spring assembly 40 are arranged in the fixing frame by arranging the fixing frame 10, the counterweight mass block 20, the vibration absorbing mass block 30 and the spring assembly 40,
wherein,
the fixing frame 10 comprises a top plate 11 and a bottom plate 12, and the top plate 11 and the bottom plate 12 are arranged so that the counterweight mass block 20, the shock absorbing mass block 30 and the spring assembly 40 are fixed on a cover plate 70 of the ground iron base;
when the cover plate 70 structure vibrates, the vibration absorbing mass block 30 generates a force in the opposite direction to the vibration of the cover plate 70 structure through the inertia action, so as to offset the vibration energy of a part of the cover plate 70 structure;
the spring assembly 40 is vertically installed between the vibration absorbing mass 30 and the bottom plate 12, and can further absorb and disperse the vibration energy of the vertical cover plate 70 structure;
the counterweight block 20 is mounted above the top plate 11, so that the overall weight of the vibration absorbing mass block 30 can be increased, the vibration absorbing capacity of the vibration absorbing mass block is improved, the vibration-proof frequency of the vibration absorber 60 is adjusted by increasing or decreasing the counterweight block 20, and meanwhile, the viscous damper 50 is arranged, so that the vibration absorbing capacity and the dispersing capacity can be further improved, and the structural vibration of the cover plate 70 is reduced.
As some embodiments of the present invention, as shown in fig. 3, at least four viscous dampers 50 are disposed, and four viscous dampers 50 are disposed at intervals around the outer periphery of the shock absorbing mass 30. The plurality of viscous dampers 50 are arranged to absorb and disperse vibration generated by the cover plate 70 through viscous materials in the viscous dampers 50, and meanwhile, the plurality of viscous dampers 50 can play a supporting role on the top plate 11 and the bottom plate 12, so that stability of the vibration absorber 60 is improved.
As some embodiments of the present invention, as shown in fig. 1-2, the viscous damper 50 is vertically disposed between the top plate and the bottom plate. The vertical arrangement of the viscous damper 50 can ensure that the vibration energy transmission direction of the cover plate 70 is vertical, and no bending moment acts, so that the vibration energy on the cover plate 70 is fully absorbed and decomposed by the absorber 60.
As some embodiments of the present invention, as shown in fig. 1-2, one end of the viscous damper 50 is connected to the top plate 11 through a connection support 51, the other end is connected to the bottom plate 12 through the connection support 51, both ends of the viscous damper 50 have through holes provided therethrough, and the outside of the connection support 51 has communication holes provided corresponding to the through holes, and bolts 52 for fixing the viscous damper 50 and the connection support 51 are screwed into the through holes and the communication holes. By arranging the through holes and the communication holes, the viscous damper 50 and the connecting support 51 are connected in a separable way, and the viscous damper 50 on the vibration absorber 60 can be adjusted according to different requirements of different places on vibration reduction, so that the applicability of the invention is improved.
As some embodiments of the present invention, as shown in fig. 1-2, the spring assemblies 40 are arranged in plural groups, and plural groups of the spring assemblies 40 are installed between the shock absorbing mass 30 and the bottom plate 12 at intervals. The arrangement of the plurality of sets of spring assemblies 40 allows the vertical vibration energy transferred from the bottom plate 12 to the top plate 11 to be absorbed and decomposed during construction of the spring assemblies 40, providing a preliminary attenuation of the vibration energy.
As some embodiments of the present invention, as shown in fig. 2, the spring assembly 40 includes a telescopic spring 41 and fixing bases 42 located at two ends of the telescopic spring 41, the fixing bases 42 include a first base 421 and a second base 422, the first base 421 and the second base 422 are disposed opposite to each other, one end of the first base 421 is screwed with the shock absorbing mass 30, the other end is fixedly connected with the telescopic spring 41, one end of the second base 422 is screwed with the bottom plate 12, and the other end is fixedly connected with the telescopic spring 41. The first seat 421 and the second seat 422 are disposed such that the spring assembly 40 and the bottom plate 12; the connection between the spring assembly 40 and the vibration absorbing mass block 30 is tighter, so that the spring assembly 40 is prevented from being deformed due to vibration energy, and the vibration absorber 60 cannot effectively eliminate the vibration energy generated in the subway operation process.
As some embodiments of the present invention, as shown in fig. 1-3, the area of the bottom plate 12 is larger than the area of the top plate 11. The stable installation of the components above the base plate 12 can be ensured, and at the same time, the contact area of the base plate 12 and the cover plate 70 is increased, thereby improving the vibration damping effect of the vibration absorber 60.
As some embodiments of the present invention, as shown in fig. 1-3, the outer edge of the bottom plate 12 has a connection hole, and the connection Kong Naluo is connected with bolts 52 for fixing the bottom plate 12 and the metro vehicle base cover 70. By the arrangement of the bolts 52, the base plate 12 can be firmly fixed above the cover plate 70, and the reduction of the vibration reduction effect of the vibration absorber 60 due to the fact that the connection between the base plate 12 and the cover plate 70 is not tight can be avoided.
The working process of the invention is as follows: the absorber 60 is connected to the vehicle base cover 70, and when vibration is transmitted to the cover 70 during running of the vehicle to cause the cover 70 to vibrate vertically, the absorber 60 automatically resonates with a controlled vibration mode of the cover 70 structure to absorb vibration energy of the controlled vibration mode, so that relative displacement between the absorber mass 30 and the spring assembly 40 in the absorber 60 is caused, and the relative displacement causes relative movement in the material of the absorber 60, so that the vibration energy of the vehicle base cover 70 is converted into internal energy of the material of the absorber 60. By vertically installing the viscous damper 50 between the top plate 11 and the bottom plate 12, the relative movement inside the material of the viscous damper 50 converts vibration energy into heat energy through friction, viscosity and other mechanisms in the vibration absorbing process to dissipate the heat energy, and by arranging the proper counterweight block 20 on the top plate 11, the vibration absorber 60 is enabled to show the maximum absorption effect on vibration in a specific frequency range according to the vibration characteristics of the vehicle base cover plate 70, so that the vibration of the vehicle base cover plate 70 is reduced.
In summary, the embodiment of the invention provides a vibration absorber 60 for a metro vehicle base cover 70, by arranging a fixing frame 10, a counterweight block 20, a vibration absorbing block 30 and a spring assembly 40, the counterweight block 20, the vibration absorbing block 30 and the spring assembly 40 are installed in the fixing frame 10, wherein the fixing frame 10 comprises a top plate 11 and a bottom plate 12, the counterweight block 20, the vibration absorbing block 30 and the spring assembly 40 are fixed on the ground iron base cover 70, when the cover 70 structure vibrates, the spring assembly 40 is installed between the vibration absorbing block 30 and the bottom plate 12, vertical vibration energy of the cover 70 can be primarily absorbed and dispersed, the vibration absorbing block 30 can generate a force in a direction opposite to the vibration direction of the cover 70 structure through the inertia effect of the vibration absorbing block, so that a part of structural vibration energy is offset, the counterweight block 20 is installed above the top plate 11, and the vibration frequency of the vibration absorber 60 is further weakened by increasing or reducing the counterweight block 20. By arranging the multi-layer vibration reduction structure, the invention can effectively control the vertical vibration of the cover plate 70 structure caused in the running process of the train, reduce the noise of the vehicle and improve the comfort level of residents in the building covered on the vehicle base.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (8)
1. The vibration absorber for the subway vehicle base cover plate is characterized by comprising a fixing frame, wherein the fixing frame comprises a top plate and a bottom plate positioned below the top plate, a counterweight mass block is detachably arranged above the top plate, a vibration absorbing mass block is fixedly connected below the top plate, a spring assembly is arranged below the vibration absorbing mass block, one end of the spring assembly is connected with the vibration absorbing mass block, and the other end of the spring assembly is connected with the bottom plate;
the device further comprises a viscous damper, one end of the viscous damper is connected with the top plate, and the other end of the viscous damper is connected with the bottom plate.
2. The vibration absorber for a metro vehicle floor as claimed in claim 1, wherein at least four viscous dampers are provided, and a plurality of viscous dampers are provided around the vibration absorbing mass block at intervals.
3. The shock absorber for a floor covering of a subway vehicle according to claim 1, wherein said viscous damper is vertically disposed between said top plate and said bottom plate.
4. The vibration absorber for a floor covering of a metro vehicle according to claim 3, wherein the two ends of the viscous damper are provided with connecting supports, one end of the viscous damper is connected with the top plate through the connecting supports, the other end of the viscous damper is connected with the bottom plate through the connecting supports, the two ends of the viscous damper are provided with through holes which penetrate through the connecting supports, the outer sides of the connecting supports are provided with communication holes which are arranged corresponding to the through holes, and bolts for fixing the viscous damper and the connecting supports are screwed in the through holes and the communication holes.
5. The absorber for a floor covering of a subway vehicle of claim 1, wherein said spring assemblies are provided in a plurality of groups, said plurality of groups being mounted in spaced relation between said absorber mass and said bottom plate.
6. The vibration absorber for a metro vehicle floor as claimed in claim 1, wherein the spring assembly comprises a telescopic spring and fixing seats at two ends of the telescopic spring, the fixing seats comprise a first seat body and a second seat body, the first seat body and the second seat body are arranged relatively, one end of the first seat body is connected with the vibration absorbing mass block, the other end of the first seat body is connected with the telescopic spring, one end of the second seat body is connected with the bottom plate, and the other end of the second seat body is connected with the telescopic spring.
7. The absorber for a floor covering of a subway vehicle according to claim 1, wherein an area of said bottom plate is larger than an area of said top plate.
8. The vibration absorber for a floor covering for a subway vehicle according to claim 1, wherein the outer edge of the bottom plate has a connection hole, and the connection Kong Naluo is connected with bolts for fixing the bottom plate and the floor covering for a subway vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311779108.0A CN117569382A (en) | 2023-12-21 | 2023-12-21 | Vibration absorber for subway vehicle base cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311779108.0A CN117569382A (en) | 2023-12-21 | 2023-12-21 | Vibration absorber for subway vehicle base cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117569382A true CN117569382A (en) | 2024-02-20 |
Family
ID=89886347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311779108.0A Pending CN117569382A (en) | 2023-12-21 | 2023-12-21 | Vibration absorber for subway vehicle base cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117569382A (en) |
-
2023
- 2023-12-21 CN CN202311779108.0A patent/CN117569382A/en active Pending
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