CN206579396U - Railcar elastic wheel - Google Patents
Railcar elastic wheel Download PDFInfo
- Publication number
- CN206579396U CN206579396U CN201621301332.4U CN201621301332U CN206579396U CN 206579396 U CN206579396 U CN 206579396U CN 201621301332 U CN201621301332 U CN 201621301332U CN 206579396 U CN206579396 U CN 206579396U
- Authority
- CN
- China
- Prior art keywords
- wheel
- rubber layer
- wheel rim
- core
- railcar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Tires In General (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a kind of railcar elastic wheel, including wheel rim (1), core wheel (4), it is characterised in that：Interference is chimeric between described wheel rim (1) and core wheel (4) the rubber layer (2) that section is in bowl-type, and width of the width less than wheel rim (1) of rubber layer (2)；Described core wheel (4) is provided with mounting groove in the outside of rubber layer (2), mounting ring (3) is interference fitted with mounting groove, and bolt (5) is connected through the inside thread of mounting ring (3) and rubber layer (2) afterwards with core wheel (4).This kind of elastic wheel be simple in construction, with suitable radial and axial rigidity, and noise reduction vibration isolating effect is good, safe.
Description
Technical field
The utility model is related to a kind of railcar elastic wheel.
Background technology
Subway has become the mode of transportation that China big city becomes more and more important.But the vibration noise produced during subway circulation,
Both the comfortableness that passenger inside the vehicle can have been influenceed to take, can also influence the work and rest of subjective reflection.And use elastic wheel to be one
Plant the effective means of reduction subway Wheel Rail Vibration noise.
For common overall rolling steel standard wheel, wheel rolling radiated noise is main in more than 2000Hz.Because
Wheel/rail active force excites the radial mode shape vibrations and the vibration of radial-axial coupled mode of wheel 2000Hz around and above,
And then cause the vibration acoustic radiation of wheel tread region, wheel rim and disc.Elastic wheel structure is by between wheel rim and core wheel
Rubber layer is set, both sides is primarily served and acts on：One is that rubber layer has absorbing effect, can directly absorb the vibration of wheel,
Reduce acoustic radiation.Two be that rubber parts has vibration isolation effect, by the inner rim portion and web portion of wheel in a certain frequency with enterprising
Row decoupling, if the vibration acoustic radiation of disc can be greatly reduced in below 2000Hz in decoupling frequency.But it is due to elastic wheel
Rubber layer decouples wheel rim and disc, and inner rim portion becomes freely, to add the modal density of wheel rim, therefore the mode of resonance of wheel rim
State is easier to be excited, and causes wheel rim acoustic radiation to increase.The elastic wheel applied in current track traffic, for middle low frequency radiation
The noise reduction of noise is limited, or even also increases Middle and low frequency noise, generally requires to install tuning quality damping additional in lateral wheel
Device suppresses Middle and low frequency noise, causes elastic wheel complicated, application cost increase.
Utility model content
The purpose of this utility model is to provide a kind of railcar elastic wheel, and this kind of elastic wheel is simple in construction, tool
There is higher radial and axial rigidity, noise reduction vibration isolating effect is good, safe.
The utility model solves its technical problem the technical scheme adopted is that a kind of railcar elastic wheel, bag
The core wheel between wheel hub, disc, wheel rim and disc and wheel rim is included, wheel rim is equal with the width of core wheel, it is characterised in that：Described
The rubber layer that section is in bowl-type, and width of the width less than wheel rim of rubber layer are embedded between wheel rim and core wheel；Described core wheel
Mounting groove is provided with the outside of rubber layer, mounting ring and mounting groove are interference fitted, bolt through after mounting ring and rubber layer with wheel
The inside thread connection of the heart.
Compared with prior art, the beneficial effects of the utility model are：
First, rubber layer embedded between wheel rim and core wheel has absorbing effect, can directly absorb the vibration of wheel, reduction is made an uproar
Acoustic radiation；Simultaneously as the section of rubber layer has the particular design in bowl-type, this rubber Rotating fields have good radial direction
Rigidity and axial rigidity, its radial rigidity scope are 130~160kN/mm, and axial rigidity scope is 25~30kN/mm, right
More than 2000Hz noise has good vibration isolation effect；And also partly limit the freedom of wheel rim, it is to avoid wheel rim resonance
Exciting for mode, Middle and low frequency noise is suppressed without installing tuned mass damper additional in lateral wheel.Its suction simple in construction
Shake excellent noise reduction effect.
Theory analysis shows that elastic wheel of the present utility model can reduce noise relative to standard wheel in Whole frequency band
10.7dBA, wherein 6dBA can be reduced in below 2000Hz frequency ranges, in 2000-5000Hz frequency ranges, it is possible to decrease 15.6dBA.
Two, rubber layer of the present utility model has used interference fit and bolt to fasten simultaneously, and rubber layer wheel rim, wheel are in the heart
It is connected firmly, with more preferable security.
The bottom flat in the bowl-type section of above-mentioned rubber layer, top is straight；Rubber layer is along wheel circumferential direction in continuous circle
The circular arc block of ring or interruption.
Bottom, top straight bowl-type section rubber layer can realize more reliable connection in the heart with wheel rim, wheel, with more
Good effectiveness in vibration suppression, it may have more preferable security.
Above-mentioned wheel rim has at the position within rubber layer and core wheel between the position within rubber layer between 2-5mm
Gap, and described gap is located on the inside of rubber layer along the 1/3-2/3 of thickness；Position and mounting ring of the wheel rim beyond rubber layer
There is 2-5mm gap between the position beyond rubber layer；And described gap is located at rubber layer side along at the 1/3-2/3 of thickness.
So, in wheel running, wheel rim will not be produced at lateral margin with core wheel and mounting ring and directly contacted, and make rubber
Glue-line can play one's part to the full, and further improve noise reduction vibration isolation effect.And the inner side edge and outside of rubber layer are along being taken turns
Rim is blocked with core wheel, makes rubber layer is stronger to be entrenched in the embeded slot of wheel rim and core wheel.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of the utility model embodiment.
Fig. 2 is that elastic wheel of the present utility model calculates contrast knot with the overall radiated level for rolling over steel standard wheel
Really.
Embodiment
Embodiment
Fig. 1 shows, a kind of embodiment of the present utility model is, a kind of railcar elastic wheel, including wheel
Rim 1, core wheel 4, it is characterised in that：Interference is chimeric between described wheel rim 1 and core wheel 4 rubber layer 2 that section is in bowl-type, and rubber
The width of glue-line 2 is less than the width of wheel rim 1；Described core wheel 4 is provided with mounting groove, mounting ring 3 and peace in the outside of rubber layer 2
Tankage is interference fitted, and bolt 5 is connected after passing through mounting ring 3 and rubber layer 2 with the inside thread of core wheel 4.
The bottom flat in the bowl-type section of the rubber layer 2 of this example, top is straight；Rubber layer 2 is along wheel circumferential direction in continuous
The circular arc block of annulus or interruption.
The wheel rim 1 of this example has 2- in the position 1a and core wheel 4 within rubber layer 2 between the position 4a within rubber layer 2
5mm gap, and described gap is located at the inner side of rubber layer 2 along at the 1/3-2/3 of thickness；Wheel rim 1 is beyond rubber layer 2
Position 1b and mounting ring 3 have 2-5mm gap between the position 3b beyond rubber layer 2；And described gap is located at the side of rubber layer 2
Along the 1/3-2/3 of thickness.
Fig. 2 is that elastic wheel of the present utility model calculates contrast knot with the overall radiated level for rolling over steel standard wheel
Really.Fig. 2 shows, relative to standard wheel, and elastic wheel of the present utility model can reduce noise 10.7dBA in Whole frequency band, wherein
Noise 6dBA can be reduced in below 2000Hz frequency ranges, in 2000-5000Hz frequency ranges, it is possible to decrease noise 15.6dBA.
Obviously, inner side of the present utility model refers to wheel close to orbit centre side, and outside then refers to away from away from track
Center side.
Claims (3)
1. a kind of railcar elastic wheel, including wheel rim (1), core wheel (4), it is characterised in that：Described wheel rim (1) and wheel
Interference is chimeric between the heart (4) the rubber layer (2) that section is in bowl-type, and width of the width less than wheel rim (1) of rubber layer (2)；
Described core wheel (4) is provided with mounting groove in the outside of rubber layer (2), and mounting ring (3) is interference fitted with mounting groove, and bolt (5) is worn
The inside thread of mounting ring (3) and rubber layer (2) afterwards with core wheel (4) is crossed to be connected.
2. a kind of railcar elastic wheel according to claim 1, it is characterised in that：Described rubber layer (2)
The bottom flat in bowl-type section, top is straight；Rubber layer (2) is along wheel circumferential direction in continuous annulus or the circular arc block of interruption.
3. a kind of railcar elastic wheel according to claim 1, it is characterised in that：Described wheel rim (1) is in rubber
Position (1a) and core wheel (4) within glue-line (2) have 2-5mm gap, and institute between the position (4a) within rubber layer (2)
The gap stated is located on the inside of rubber layer (2) along the 1/3-2/3 of thickness；Position (1b) of the wheel rim (1) beyond rubber layer (2) with
Mounting ring (3) has 2-5mm gap between the position (3b) beyond rubber layer (2)；And described gap is located at rubber layer (2) side
Along the 1/3-2/3 of thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301332.4U CN206579396U (en) | 2016-11-30 | 2016-11-30 | Railcar elastic wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301332.4U CN206579396U (en) | 2016-11-30 | 2016-11-30 | Railcar elastic wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206579396U true CN206579396U (en) | 2017-10-24 |
Family
ID=60107988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621301332.4U Expired - Fee Related CN206579396U (en) | 2016-11-30 | 2016-11-30 | Railcar elastic wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206579396U (en) |
-
2016
- 2016-11-30 CN CN201621301332.4U patent/CN206579396U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20211130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |