CN107444417B - A kind of rail vehicle and its body construction - Google Patents
A kind of rail vehicle and its body construction Download PDFInfo
- Publication number
- CN107444417B CN107444417B CN201710475289.6A CN201710475289A CN107444417B CN 107444417 B CN107444417 B CN 107444417B CN 201710475289 A CN201710475289 A CN 201710475289A CN 107444417 B CN107444417 B CN 107444417B
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- pantograph
- layer
- vehicle
- interior
- rail vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/18—Internal lining, e.g. insulating
- B61D17/185—Internal lining, e.g. insulating for sound insulating
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention discloses a kind of rail vehicle and its body construction, body construction includes pantograph installing zone and air duct arrangement area, and the pantograph installing zone is for installing pantograph device, air duct arrangement area, the ventilating duct for air-conditioner for attachment rail vehicle；Air duct arrangement area is located at the side of the pantograph installing zone, and at least described pantograph installing zone is provided with sound insulating structure；Compared with prior art air duct arrangement area is set to the underface of pantograph installing zone, air duct arrangement area is set to the side of pantograph installing zone in the present invention, sound insulating structure can be installed below pantograph installing zone in this way, the noise and vibration generate to pantograph is isolated, greatly reduce the noise of installation pantograph interior, make to be equipped with noise overall sound pressure level in the compartment of pantograph and frequency spectrum and other common guest room ends and central region are similar, and the vehicle body space utilization rate after optimizing is higher, does not influence interior space size.
Description
Technical field
The present invention relates to Car design technical field, in particular to a kind of rail vehicle and its body construction.
Background technique
Pantograph noise is one of Main Noise Sources of high-speed EMUs, and the corresponding internal car noise in the region is always high speed
The difficult point of EMU noise control, other guest room regions of the usual EMU pantograph lower section guest room noise region than same position
High 3~6dB (A).Due to the aerodynamic noise that noise existing pantograph component in pantograph area generates under high-speed flow, also have because of bow
The vibration that net contact and air-operated drive generate, noise source is high, and circulation way is complicated, and it is difficult to control.
It is the technical issues of those skilled in that art study and pay close attention to always on the influenced guest room noise reduction in pantograph area.
Summary of the invention
The present invention provides a kind of body construction of rail vehicle, including pantograph installing zone and air duct arrangement area, it is described by
Pantograph installing zone is for installing pantograph device, air duct arrangement area, the ventilating duct for air-conditioner for attachment rail vehicle；Institute
The side that air duct arrangement area is located at the pantograph installing zone is stated, and at least described pantograph installing zone is provided with sound insulation knot
Structure.
Compared with prior art air duct arrangement area is set to the underface of pantograph installing zone, air duct is arranged in the present invention
Area is set to the side of pantograph installing zone, can install sound insulating structure below such pantograph installing zone, generates to pantograph
Noise and vibration be isolated, greatly reduce installation pantograph interior noise, make the compartment for being equipped with pantograph
Interior noise overall sound pressure level and frequency spectrum and other common guest room ends and central region are similar, and the vehicle body space after optimization
Utilization rate is higher, does not influence interior space size.
Optionally, roof is provided with the recessed portion of opening upwards, and the recessed portion forms the pantograph installing zone, by electricity
The support insulator of bow is installed on the groove bottom wall of the recessed portion；Air duct arrangement area be arranged in the side wall of the recessed portion with
The cavity that corresponding vehicle body side wall is formed.
Optionally, the sound insulating structure includes the composite layer that insulates against sound outside vehicle, and the composite layer that insulates against sound outside the vehicle includes double layer of metal
Plate and the piezo-electric damping material layer being filled between two metal plates, the outer acoustic hood of the vehicle are covered in the recessed portion
Groove bottom wall, and the mounting portion of the support insulator passes through the slot that the composite layer that insulates against sound outside the vehicle is fixedly connected with the recessed portion
Bottom wall.
Optionally, the sound insulating structure further includes interior sound insulating structure, includes at least following one or a few persons: Nanowire
Tie up thermal insulation layer, interior sound insulation composite layer and vibration damping absorbent treatment；Wherein the interior sound insulation composite layer includes double layer of metal plate, described
Thermal insulation and sound-absorbing material layer or/and vibration damping dope layer are filled between double layer of metal plate.
Optionally, the nanofiber thermal insulation layer, the interior both lateral sides for insulating against sound composite layer extend to the air-conditioning
Between ventilation shaft and car body side wall, or the vibration damping absorbent treatment laterally covers entire roof.
Optionally, the surface that the roof is contacted with the interior sound insulating structure is provided with damping pulp layer, the damping slurry
Layer laterally covers entire roof；Hot melt material is also posted in the position of sound insulation composite layer outside the vehicle inside the roof.
Optionally, several grooves that Open Side Down are provided on the interior sound insulation composite layer, the bottom wall of the groove is set
It is equipped with through-hole, the sliding groove structure of accommodating bolt head is provided on the roof, the threaded portion of the bolt passes through the nanometer
Fibrous insulating layer and the through-hole of groove bottom wall setting are connected and fixed with nut.
It optionally, further include sealing element, for blocking the notch of the groove；It is set to described in the sliding groove structure
Bolt fixes the nanofiber thermal insulation layer, the interior sound insulation composite layer and the sealing element simultaneously.
Optionally, further include interior top plate, positioned at the lower section of interior sound insulating structure, it is described car top plate be laterally extended two
Side end is fixed on the ventilating duct for air-conditioner.
Optionally, in horizontal or vertical direction, the interior sound insulation composite layer includes at least two sections, and each section of scrap (bridge) connects and lead to
Cross the sliding groove structure that bolt is fixed on roof.
In addition, the present invention also provides a kind of rail vehicle, including chassis and the car body being set on chassis, the car body
With body construction described in any of the above embodiments.
Detailed description of the invention
Fig. 1 is the distribution schematic diagram of influence of noise in one section compartment of rail vehicle；
Fig. 2 is noise profile test result analysis schematic diagram in compartment in the present invention；
Fig. 3 is the body construction schematic diagram of an embodiment of the present invention middle orbit vehicle；
Fig. 4 is the cross-sectional view of sound insulation composite layer outside vehicle in a kind of specific embodiment of the present invention；
Fig. 5 is the cross-sectional view of interior sound insulation composite layer in a kind of specific embodiment of the present invention；
Fig. 6 is enlarged diagram at A in Fig. 3；
Fig. 7 is roof and interior sound insulating structure assembling schematic diagram；
Fig. 8 is the partial schematic diagram of interior sound insulation composite construction；
Fig. 9 is enlarged diagram at B in Fig. 7.
Wherein, Fig. 3 is into Fig. 9:
Sound insulation composite layer 1, metal plate 11, piezo-electric damping material layer 12, metal plate 13, roof 2, recessed portion 2a, resistance outside vehicle
Buddhist nun's pulp layer 3, nanofiber thermal insulation layer 4, interior sound insulation composite layer 5, metal plate 51, thermal insulation and sound-absorbing material layer 52, vibration damping dope layer
53, metal plate 54, groove 5a, scrap (bridge) 5b, vibration damping absorbent treatment 6, bolt 81, nut 82, damping means 83, sealing element 84；
Ventilating duct for air-conditioner 70；
Vehicle body side wall b；Interior top plate c.
Specific embodiment
For noise caused by pantograph described in background technique to the influence inside guest room, depth has been carried out herein
Enter research.Research is found: the noise and vibration source in pantograph area can divide vibrational excitation and noise excitation, and these two types excitation is very big,
Should carry out simultaneously in terms of sound insulation and vibration damping two, the vibration and noise reducing measure used on motor-car at present be essentially car body and trim panel it
Between installation sound absorption vibration damping material, have certain effect to the reduction of internal car noise, but pantograph noise region is still higher than the other areas in guest room
Domain.
The size of objective room noise is related with the sound absorption thickness of vibration damping material, and sound absorption vibration damping material thickness is thicker, sound absorption effect
It is relatively better.But sound absorption vibration damping material thickness cannot be too thick, otherwise influences the installation of other component in pantograph and guest room.
In addition, research is it has also been found that following rule is distributed in guest room internal noise: according to noise profile test knot in regular vehicle
Fruit (shown in Fig. 1) is it is found that for non-pantograph vehicle guest room end mainly by the aerodynamic noise shadow of wheel-rail noise and workshop junction
It rings, coverage is from outer end to middle part within the scope of 6.5m；For pantograph vehicle guest room end mainly by pantograph noise shadow
It rings, is secondly wheel-rail noise, workshop junction aerodynamic noise, pantograph influence of noise range is 8m range from outer end to middle part
It is interior.
For the technical problem that passenger compartment noise near the above pantograph is larger, the technical side solved presented further herein
Case.
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
Fig. 3 and Fig. 6 are please referred to, Fig. 3 is the body construction schematic diagram of an embodiment of the present invention middle orbit vehicle；Fig. 6 is
Enlarged diagram at A in Fig. 3
The present invention provides a kind of rail vehicle, rail vehicle includes chassis and the car body that is set on chassis, car body
Including by side wall, headwall and roof 2, three surrounds cabin space, car body further includes being installed on side wall, headwall and roof 2
On each components.For the beauty of interior, interior is further typically provided with interior top plate.
The present invention provides a kind of body construction, which includes pantograph installing zone and air duct arrangement area, by electricity
For bow installing zone for installing pantograph device, i.e., the part in pantograph device with car body installation is set to pantograph installing zone.
Air duct arrangement area is used for the ventilating duct for air-conditioner 70 of attachment rail vehicle, and the air-conditioning being arranged on rail vehicle passes through ventilation duct of air conditioner
Road 70 provides cold wind or warm wind to interior.Ventilating duct for air-conditioner 70 and sound insulating structure are located at vehicle medial roof and top plate
Top.
Arrangement area in air duct is located at the side of pantograph installing zone in the present invention, and pantograph installing zone is provided with sound insulation knot
Structure.Sound insulating structure main function is that the noise and vibration that external pantograph generates, as far as possible reduction pantograph noise and vibration is isolated
Influence to interior space.Sound insulating structure is at least installed on pantograph installing zone, certainly, sound insulating structure can also cover by
The side or neighbouring position of pantograph installing zone.
Compared with prior art air duct arrangement area is set to the underface of pantograph installing zone, air duct is arranged in the present invention
Area is set to the side of pantograph installing zone, can install sound insulating structure below such pantograph installing zone, generates to pantograph
Noise and vibration be isolated, greatly reduce installation pantograph interior noise, make the compartment for being equipped with pantograph
Interior noise overall sound pressure level and frequency spectrum and other common guest room ends and central region are similar, and the vehicle body space after optimization
Utilization rate is higher, does not influence interior space size.
In a specific embodiment, roof 2 is provided with the recessed portion 2a of opening upwards, and recessed portion 2a forms pantograph
Installing zone, the support insulator of pantograph are installed on the groove bottom wall of recessed portion 2a, so in the height direction, support insulator
It is partially or entirely located in recessed portion 2a.
The cavity that air duct arrangement area is arranged in the side wall of recessed portion 2a and corresponding vehicle body side wall b is formed.That is air duct arrangement area
Positioned at interior, it is located substantially at the link position of car body side wall Yu roof 2.
In the embodiment support insulator of pantograph most or all be lower than recessed portion 2a notch, that is, support
Insulator is installed on inside recessed portion 2a, during track train driving, can substantially reduce air-flow to support insulator
Impact, avoids support insulator from vibrating, and then largely reduced the vibration noise of support insulator as far as possible.
The shape of recessed portion 2a can be set according to specific situation, not do specific introduction herein.
Specifically, in order to reduce noise in compartment as far as possible, sound insulating structure may include interior sound insulating structure and vehicle it is outer every
Acoustic form.Interior sound insulating structure is set to interior, and the outer sound insulating structure of vehicle is set to vehicle exterior.
Such as the cross-sectional view that Fig. 4, Fig. 4 are sound insulation composite layer outside vehicle in a kind of specific embodiment of the present invention.
In a specific embodiment, the outer sound insulating structure of vehicle includes the composite layer 1 that insulates against sound outside vehicle comprising double layer of metal plate
(such as figure metal plate 11 and metal plate 13) and it is filled in piezo-electric damping material layer 12 between two metal plates.Insulate against sound composite layer outside vehicle
1 is covered in the groove bottom wall of recessed portion 2a, and the mounting portion of support insulator passes through the composite layer 1 that insulates against sound outside vehicle and is fixedly connected with recess
The groove bottom wall of portion 2a.That is, metal plate and piezo-electric damping material corresponding position are provided with avoiding structure, to support to insulate
Son is installed on recessed portion 2a.Avoiding structure can be the through-hole opened up to insulate against sound on composite layer 1 outside vehicle.
Piezo-electric damping material can be the good materials of effect of vibration and noise reduction such as resin base, ceramic base.
The vibration that piezo-electric damping material layer 12 generates insulator can play good buffer action, and can subtract
The transmitting that small noise passes through vibration.The metal plate 11 and metal plate 13 being set to outside piezo-electric damping material layer 12 simultaneously can be right
Piezo-electric damping material plays a very good protection, and improves the service life of piezo-electric damping material.
Referring to FIG. 5, Fig. 5 is the cross-sectional view of interior sound insulation composite layer in a kind of specific embodiment of the present invention.
Interior sound insulating structure may include following one or a few persons: nanofiber thermal insulation layer 4, interior sound insulation composite layer 5
With vibration damping absorbent treatment 6；Wherein, nanofiber thermal insulation layer 4, interior sound insulation composite layer 5 compare relatively thin, and vibration damping absorbent treatment 6 is opposite
Compare thick, therefore in setting, nanofiber thermal insulation layer 4 and interior sound insulation composite layer 5 can extend to air conditioner ventilation with both lateral sides
Between pipeline and car body side wall, vibration damping absorbent treatment laterally covers entire roof 2.
Although the oise insulation factor of sound insulating material and body profile that car body side top region is laid with is below 2 region of roof, should
Ventilating duct for air-conditioner is mounted on side top region by invention, and the pantograph area region Ce Ding and 2 region of roof is made to keep comparable sound insulation
Amount avoids sound insulation weak link occur in this region, so that the whole pantograph that improves separates volume.
Specifically, interior sound insulation composite layer 5 may include double layer of metal plate (metal plate 51 and metal plate 54), metal plate 51
Thermal insulation and sound-absorbing material layer 52 or/and vibration damping dope layer 53 are filled between metal plate 54.Such as Fig. 5, there is shown herein car every
Sound composite layer 5 includes the specific embodiment of metal plate, thermal insulation and sound-absorbing material layer 52 and vibration damping dope layer 53.
The length of each material layer in the longitudinal direction can be entire pantograph influence area, as described above for non-pantograph
Vehicle guest room end can arrange each material layer from outer end to middle part within the scope of 6.5m；For pantograph vehicle guest room end, Ke Yicong
Each material layer is arranged within the scope of the 8m of outer end to middle part.The structures such as the possible mounting rail of interior compartment side, in order to firmly install acoustic hood
To avoid vibration is generated, interior acoustic hood can also be segmented and be installed, and each section carries out according to the body construction of corresponding position
Design.It can be fixed between each section with scrap (bridge) 5b.Roof 2 can be profile structure, be provided with sliding groove structure, sliding groove structure on profile
The head of bolt can be accommodated, each section of acoustic hood can be fixedly connected with 2 sliding slot of roof by bolt and nut.
The thickness of each material layer can pass through simulation calculation and test in above-mentioned car sound insulating structure and the outer sound insulating structure of vehicle
Verifying determines.
In order to further increase sound insulation effect, the surface that roof 2 is contacted with interior sound insulating structure is provided with damping pulp layer 3,
It damps pulp layer 3 and laterally covers entire roof 2；Hot melt material is also posted close to the position of the outer sound insulating structure of the vehicle in 2 inside of roof,
Hot melt material can be attached to the inside of roof 2, such as when roof 2 is profile (such as aluminum profile), hot melt material can be affixed on type
The inside of material.
Fig. 7 to Fig. 9 is please referred to, Fig. 7 is roof and interior sound insulating structure assembling schematic diagram；Fig. 8 is interior sound insulation composite junction
The partial schematic diagram of structure；Fig. 9 is enlarged diagram at B in Fig. 7.
As described above, sliding groove structure can be set on 2 profile of roof, can be set on car sound insulation composite layer 5 several
The bottom wall of the groove 5a that Open Side Down, groove 5a are equipped with through-hole, and inside bolt head card to sliding groove structure, threaded portion passes through car
Insulate against sound composite layer 5 groove 5a bottom wall and nanofiber thermal insulation layer 4 on through-hole be connected and fixed with nut, thus realize car every
The fixation of sound composite layer 5.Sliding groove structure is the prior art, does not do excessively repeat herein.
Each interior sound insulation composite layer 5 in the various embodiments described above can be structure as a whole, or separate structure, i.e. vehicle
Interior sound insulation composite layer 5 includes multistage, and each section of scrap (bridge) 5b connection can be fixed by bolts on the sliding groove structure of roof 2.Sliding slot
Structure can refer to above description.
In order to improve whole sound insulation value, body construction may be provided for blocking the sealing element of groove 5a notch.If
It is placed in through-hole attaching nut of the threaded portion of the bolt in sliding groove structure on sealing element.The spiral shell being set in sliding groove structure
Bolt realizes the fixation of sealing element, nanofiber thermal insulation layer 4, interior sound insulation composite layer 5, roof 2 simultaneously.Certain scrap (bridge) 5b bearing
Also the fixed position sealing element sealing scrap (bridge) 5b can be set.
In the various embodiments described above, the both side ends of interior top plate c being laterally extended are fixed on ventilating duct for air-conditioner.
A kind of rail vehicle provided by the present invention and its body construction are described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand
Method and its core concept of the invention.It should be pointed out that for those skilled in the art, not departing from this
, can be with several improvements and modifications are made to the present invention under the premise of inventive principle, these improvement and modification also fall into the present invention
In scope of protection of the claims.
Claims (10)
1. a kind of body construction of rail vehicle, which is characterized in that described by electricity including pantograph installing zone and air duct arrangement area
Bow installing zone is for installing pantograph device, air duct arrangement area, the ventilating duct for air-conditioner for attachment rail vehicle；It is described
Air duct arrangement area is located at the side of the pantograph installing zone, and at least described pantograph installing zone is provided with sound insulating structure；
Roof (2) is provided with the recessed portion (2a) of opening upwards, and the recessed portion (2a) forms the pantograph installing zone, pantograph
Support insulator is installed on the groove bottom wall of the recessed portion (2a)；Air duct arrangement area is arranged in the side of the recessed portion (2a)
The cavity that wall and corresponding vehicle body side wall are formed；The sound insulating structure includes the interior sound insulating structure for being set to interior, at least
Including following one or a few persons: nanofiber thermal insulation layer (4), interior sound insulation composite layer (5) and vibration damping absorbent treatment (6)；
Also, the both lateral sides of the nanofiber thermal insulation layer (4) or interior sound insulation composite layer (5) extend to the air-conditioning
Between ventilation shaft and car body side wall.
2. the body construction of rail vehicle as described in claim 1, which is characterized in that the sound insulating structure includes insulating against sound outside vehicle
Composite layer (1), the composite layer (1) that insulates against sound outside the vehicle include double layer of metal plate and the piezoelectricity that is filled between two metal plates
Damping material layer (12), the outer acoustic hood of the vehicle are covered in the groove bottom wall of the recessed portion (2a), and the support insulator
Mounting portion pass through the composite layer (1) that insulates against sound outside the vehicle and be fixedly connected with the groove bottom wall of the recessed portion (2a).
3. the body construction of rail vehicle as claimed in claim 1 or 2, which is characterized in that interior sound insulation composite layer (5)
Including double layer of metal plate, thermal insulation and sound-absorbing material layer (52) or/and vibration damping dope layer (53) are filled between the double layer of metal plate.
4. the body construction of rail vehicle as described in claim 1, which is characterized in that the vibration damping absorbent treatment (6) is laterally covered
Cover entire roof (2).
5. the body construction of rail vehicle as claimed in claim 2, which is characterized in that the roof (2) and it is described it is interior every
The surface of acoustic form contact is provided with damping pulp layer (3), and the damping pulp layer (3) laterally covers entire roof (2)；The roof
(2) hot melt material is also posted in the internal position that composite layer is insulated against sound outside the vehicle.
6. the body construction of rail vehicle as described in claim 1, which is characterized in that on interior sound insulation composite layer (5)
Several grooves that Open Side Down are provided with, the bottom wall of the groove is provided with through-hole, is provided with accommodating bolt on the roof (2)
The sliding groove structure on head, what the threaded portion of the bolt was arranged across the nanofiber thermal insulation layer (4) and the groove bottom wall
Through-hole is connected and fixed with nut.
7. the body construction of rail vehicle as claimed in claim 6, which is characterized in that further include sealing element, for blocking
State the notch of groove；It is the bolt that is set in the sliding groove structure while the fixed nanofiber thermal insulation layer (4), described
Car sound insulation composite layer (5) and the sealing element.
8. the body construction of rail vehicle as claimed in claim 3, which is characterized in that further include interior top plate (c), be located at vehicle
The lower section of interior sound insulating structure, the both side ends that the car top plate (c) is laterally extended are fixed on the ventilating duct for air-conditioner.
9. the body construction of rail vehicle as claimed in claim 3, which is characterized in that transversely or/and along longitudinal direction, the vehicle
Interior sound insulation composite layer (5) includes at least two sections, and each section of scrap (bridge) connects and be fixed by bolts in the sliding groove structure of roof (2).
10. a kind of rail vehicle, including chassis and the car body being set on chassis, which is characterized in that the car body has as weighed
Benefit requires 1 to 9 described in any item body constructions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475289.6A CN107444417B (en) | 2017-06-21 | 2017-06-21 | A kind of rail vehicle and its body construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475289.6A CN107444417B (en) | 2017-06-21 | 2017-06-21 | A kind of rail vehicle and its body construction |
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| Publication Number | Publication Date |
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| CN107444417A CN107444417A (en) | 2017-12-08 |
| CN107444417B true CN107444417B (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710475289.6A Active CN107444417B (en) | 2017-06-21 | 2017-06-21 | A kind of rail vehicle and its body construction |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621801A (en) * | 2018-06-21 | 2018-10-09 | 苏州大成电子科技有限公司 | A kind of lower noise component for pantograph region |
| CN109177996B (en) * | 2018-08-17 | 2020-02-14 | 中车青岛四方机车车辆股份有限公司 | High-damping sound-insulation composite material vehicle body structure for railway vehicle |
| CN109131389A (en) * | 2018-09-14 | 2019-01-04 | 中车青岛四方机车车辆股份有限公司 | A kind of roof structure of rail vehicle |
| CN111994103B (en) * | 2020-09-07 | 2021-08-13 | 中车青岛四方机车车辆股份有限公司 | Full-floating building carriage structure and railway vehicle |
| CN112061157B (en) * | 2020-09-11 | 2024-04-23 | 中车长春轨道客车股份有限公司 | Roof equipment cabin structure of high-speed motor train unit |
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| CN107444417A (en) | 2017-12-08 |
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