CN113335319A - Vehicle body structure of railway vehicle and vehicle body design method - Google Patents
Vehicle body structure of railway vehicle and vehicle body design method Download PDFInfo
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- CN113335319A CN113335319A CN202110707684.9A CN202110707684A CN113335319A CN 113335319 A CN113335319 A CN 113335319A CN 202110707684 A CN202110707684 A CN 202110707684A CN 113335319 A CN113335319 A CN 113335319A
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- vehicle
- vehicle body
- top surface
- body structure
- flow guide
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004378 air conditioning Methods 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 4
- 238000010276 construction Methods 0.000 claims 2
- 230000001427 coherent effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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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
- B61D17/02—Construction details of vehicle bodies reducing air resistance by modifying contour ; Constructional features for fast vehicles sustaining sudden variations of atmospheric pressure, e.g. when crossing in tunnels
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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
-
- 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
- B61D17/20—Communication passages between coaches; Adaptation of coach ends therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Computational Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automation & Control Theory (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses a vehicle body structure of a railway vehicle and a vehicle body design method, the vehicle body structure comprises a vehicle head, a vehicle compartment, a flow guide cover, an air conditioning unit and a waste discharge device, wherein the air conditioning unit and the waste discharge device form a coherent bulge on the top of the vehicle compartment, the front end and the rear end of the bulge are respectively provided with a smooth first flow guide slope surface and a smooth second flow guide slope surface, the rear side of the first flow guide slope surface inclines upwards, the rear side of the second flow guide slope surface inclines downwards, the length of the vehicle head is more than 2m, the vehicle head is provided with a convex part protruding out of the top surface of the vehicle compartment, the flow guide cover is arranged on the vehicle roof, the front end of the flow guide cover is in smooth transition connection with the convex part, and the rear end of the flow guide surface is supported on the convex top surface. The design method is that a vehicle clearance model and a vehicle contour model are established and are led into simulation software to carry out pneumatic resistance analysis of the whole vehicle, and then the design is continuously optimized. This scheme of adoption can reduce vehicle running resistance and operation energy consumption, compares traditional vehicle, and running resistance can reduce about 7%.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a vehicle body structure of a railway vehicle and a vehicle body design method.
Background
The running resistance of the rail vehicle is reduced, the low-energy-consumption running of the rail vehicle is facilitated, and the acceleration of the rail vehicle is facilitated.
Therefore, how to further reduce the running resistance of the rail vehicle is a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
In order to solve the technical problems, the invention provides a vehicle body structure of a railway vehicle, which comprises a carriage, an air conditioning unit and a waste discharge device, wherein the air conditioning unit and the waste discharge device are arranged on the top of the carriage in an integrated or adjacent arrangement and protrude out of the top surface of the carriage, a coherent bulge is formed on the top of the carriage, the front end and the rear end of the bulge are respectively provided with a smooth first flow guide slope surface and a smooth second flow guide slope surface, the rear side of the first flow guide slope surface is farther away from the top surface of the carriage than the front side, and the front side of the second flow guide slope surface is farther away from the top surface of the carriage than the rear side.
In one embodiment, the vehicle body structure comprises a vehicle head, the vehicle head is provided with a convex part protruding out of the top surface of a carriage, the vehicle body structure further comprises a flow guide cover, the flow guide cover is installed on the vehicle roof, the top surface of the flow guide cover is a smooth flow guide surface, the front end of the flow guide cover is in smooth transition connection with the convex part, and the rear end of the flow guide cover is supported on the convex top surface.
In one embodiment, two sides of the rear part of the air guide sleeve are gradually concave inwards, so that the widths of the air guide sleeve and the protrusion at the contact position of the air guide sleeve and the protrusion are consistent.
In one embodiment, a top surface of the pod and a top surface of the protrusion are flush.
In one embodiment, the length of the vehicle head is greater than 2 m.
In one embodiment, the length of the vehicle head is 2.2 m.
In one embodiment, the vehicle body structure further comprises a through passage, and the cross-sectional outer contour of the through passage and the cross-sectional outer contour of the carriage are both trapezoidal contours with narrow top and wide bottom.
In one embodiment, the cross-sectional inner contour of the through passage is a rectangular contour with the same width at the top and the bottom.
In addition, the invention also provides a method for designing the vehicle body of the rail vehicle, which comprises the following steps:
s1, building a vehicle boundary model and a vehicle body contour model
And S2, importing the vehicle clearance model and the vehicle body contour model into simulation software, setting simulation parameters, carrying out pneumatic resistance simulation calculation, and optimizing the vehicle clearance contour model and the vehicle body contour model according to a simulation result until the requirements of pneumatic performance are met.
In one embodiment, the method further comprises the following steps:
and S3, carrying out process inspection on the vehicle body contour model meeting the aerodynamic performance requirement, modifying the vehicle clearance model and the vehicle body contour model if the process inspection is unqualified, and generating a machining diagram if the process inspection is qualified.
The automobile body structure that this scheme provided, whole car operating resistance is little, the operation energy consumption is low, compares traditional vehicle, and operating resistance can reduce about 7%. By adopting the design method provided by the scheme, the vehicle body structure with small running resistance can be designed.
Drawings
FIG. 1 is a schematic view of one embodiment of a body structure of a railway vehicle provided by the present invention;
FIG. 2 is a schematic view of a head portion of one embodiment of a body structure of a railway vehicle provided by the present invention;
fig. 3 is a schematic view of a wagon box portion of one embodiment of a vehicle body structure of a railway vehicle provided by the invention.
The reference numerals are explained below:
1, a vehicle head and 11 convex parts;
2, a compartment;
3 convex, 31 first flow guiding slope surface, 32 second flow guiding slope surface
4, a flow guide sleeve;
5 through passage.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 3, the vehicle body structure includes a vehicle head 1, a vehicle compartment 2, a cowl 4, and a through passage 5. An air conditioning unit and a waste discharge device are installed at the top of the carriage 2, the air conditioning unit and the waste discharge device are integrally arranged or arranged close to each other and protrude out of the top surface of the carriage 2, and a coherent protrusion 3 is formed at the top of the carriage 2. If the air conditioning unit and the waste discharge device are arranged dispersedly, turbulence is easily generated in a gap between the air conditioning unit and the waste discharge device, and the air conditioning unit and the waste discharge device are integrally arranged or arranged close to each other, so that the problem can be avoided, and the running resistance of the vehicle can be reduced.
As shown in fig. 3, the front end and the rear end of the protrusion 3 are respectively provided with a smooth first guide slope surface 31 and a smooth second guide slope surface 32. The rear side of the first guide slope 31 is farther from the top surface of the car 2 than the front side, and the front side of the second guide slope 32 is farther from the top surface of the car 2 than the rear side, that is, the rear side of the first guide slope 31 is inclined upward, and the rear side of the second guide slope 32 is inclined downward. By the design, the airflow impact on the bulge 3 can be reduced, so that the running resistance of the vehicle can be further reduced.
As shown in fig. 1 and 2, the vehicle head 1 has a front face, a cab framework, a cab window, an escape door, a front-end collision energy-absorbing device and other structures. The top of the cab of the vehicle head 1 is higher than the top surface of the carriage 2, and the raised part forms a convex part 11. The air guide sleeve 4 is installed on the roof, the front end of the air guide sleeve 4 is connected with the protruding portion 11 in a smooth transition mode, and the rear end of the air guide sleeve 4 is supported on the top surface of the protruding portion 3, so that the problem that the pressure difference resistance is increased due to the fact that the airflow generates vortex shedding in the relative concave area between the protruding portion 11 and the protruding portion 3 to generate a flow separation phenomenon can be solved, and the pneumatic resistance of the whole vehicle can be reduced by about 3.95%.
Specifically, as shown in fig. 1, two sides of the rear portion of the air guide sleeve 4 are gradually recessed, and notches are formed on two sides of the rear portion of the air guide sleeve 4, so that the width of the contact position between the air guide sleeve 4 and the protrusion 3 is consistent, and by the design, the flow resistance of the joint of the air guide sleeve 4 and the protrusion 3 is small, and the manufacturing process of the air guide sleeve 4 is simple.
Specifically, as shown in fig. 1, the top surface of the cowl 4 is flush with the top surface of the projecting portion 11 of the vehicle head 1, that is, the top surface of the cowl 4 coincides with an imaginary extension plane in which the top surface of the projecting portion 11 extends rearward in the vehicle length direction. The design is more beneficial to reducing the running resistance of the vehicle.
Specifically, as shown in fig. 2, the length L of the vehicle head 1 is greater than 2m, and preferably, the length L of the vehicle head 1 is designed to be 2.2 m. Compared with the prior rail vehicle with the head of 1.1m, the pneumatic resistance of the whole vehicle can be reduced by 7.19 percent.
Specifically, as shown in fig. 3, the cross-sectional outer contour of the through passage 5 and the cross-sectional outer contour of the carriage 2 are both trapezoidal contours with narrow top and wide bottom, and the cross-sectional inner contour of the through passage 5 is a rectangular contour with the same width as the top and the bottom. By the design, the vehicle end interval can be covered in a large area, and the turbulent flow of air flow at the joint of the two vehicles can be reduced, so that the running resistance of the whole vehicle can be further reduced.
In addition, the scheme also provides a vehicle body design method of the railway vehicle, and the vehicle body structure of the railway vehicle can be designed by the method.
The method comprises the following steps:
s1, establishing a vehicle clearance model and a vehicle body contour model;
the method comprises the following steps: the method comprises the steps of establishing a vehicle limit model according to the vehicle width and preset limit sizes, establishing a vehicle body contour model according to the positions and sizes of a vehicle front face, a cab framework, an escape door, a vehicle window and the like, and performing smoothing treatment, such as corner removing treatment, arc treatment and the like, on the inner surface of the vehicle limit model and the outer surface of the vehicle body contour model.
And S2, importing the established vehicle clearance model and the vehicle body contour model into simulation software, setting simulation parameters, carrying out pneumatic resistance simulation calculation, and optimizing the vehicle clearance contour model and the vehicle body contour model according to a simulation result until the requirements on pneumatic performance are met.
Further, the following steps can be optionally performed:
and S3, carrying out process inspection on the vehicle body contour model meeting the aerodynamic performance requirement, modifying the vehicle clearance model and the vehicle body contour model if the process inspection is unqualified, and generating a machining diagram if the process inspection is qualified. The process inspection can avoid the problems of high cost and difficult application caused by high processing difficulty of the designed vehicle body profile.
The vehicle body structure and the vehicle body design method of the railway vehicle provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. Rail vehicle's body construction, body construction includes carriage (2) and installs air conditioning unit and the waste discharge device at carriage (2) top, its characterized in that, air conditioning unit with the waste discharge device integrated arrangement or adjacent arrangement and protrusion carriage (2) top surface form consecutive arch (3) at carriage (2) top, the front end and the rear end of arch (3) are equipped with smooth first water conservancy diversion domatic (31) and smooth second water conservancy diversion domatic (32) respectively, the rear side of first water conservancy diversion domatic (31) is more far away from carriage (2) top surface than the front side, the front side of second water conservancy diversion domatic (32) is more far away from carriage (2) top surface than the rear side.
2. The vehicle body structure of a railway vehicle according to claim 1, comprising a vehicle head (1), wherein the vehicle head (1) is provided with a convex part (11) protruding out of the top surface of the carriage (2), the vehicle body structure further comprises a wind deflector (4), the wind deflector (4) is mounted on the vehicle roof, the top surface of the wind deflector (4) is a smooth wind deflector surface, the front end of the wind deflector (4) is in smooth transition connection with the convex part (11), and the rear end of the wind deflector (4) is supported on the top surface of the protrusion (3).
3. The vehicle body structure of a railway vehicle according to claim 2, wherein both sides of the rear portion of the air guide sleeve (4) are gradually concaved so that the air guide sleeve (4) and the protrusion (3) have the same width at the contact position of the two.
4. The vehicle body structure of a railway vehicle according to claim 2, characterized in that the top surface of the air guide sleeve (4) and the top surface of the protrusion (11) are flush.
5. The vehicle body structure of a rail vehicle according to claim 2, characterized in that the length of the vehicle head (1) is greater than 2 m.
6. The vehicle body structure of a rail vehicle according to claim 5, characterized in that the length of the vehicle head (1) is 2.2 m.
7. The vehicle body structure of a rail vehicle according to any one of claims 1 to 6, further comprising a through passage (5), wherein the cross-sectional outer contour of the through passage (5) and the cross-sectional outer contour of the car body (2) are each a trapezoidal contour that is narrow at the top and wide at the bottom.
8. The vehicle body structure of a railway vehicle according to claim 7, wherein the cross-sectional inner contour of the through passage (5) is a rectangular contour having the same width in the upper and lower directions.
9. The method for designing the vehicle body of the railway vehicle is characterized by comprising the following steps of:
s1, building a vehicle boundary model and a vehicle body contour model
And S2, importing the vehicle clearance model and the vehicle body contour model into simulation software, setting simulation parameters, carrying out pneumatic resistance simulation calculation, and optimizing the vehicle clearance contour model and the vehicle body contour model according to a simulation result until the requirements of pneumatic performance are met.
10. The method of designing a rail vehicle of claim 9, further comprising the steps of:
and S3, carrying out process inspection on the vehicle body contour model meeting the aerodynamic performance requirement, modifying the vehicle clearance model and the vehicle body contour model if the process inspection is unqualified, and generating a machining diagram if the process inspection is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707684.9A CN113335319A (en) | 2021-06-24 | 2021-06-24 | Vehicle body structure of railway vehicle and vehicle body design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707684.9A CN113335319A (en) | 2021-06-24 | 2021-06-24 | Vehicle body structure of railway vehicle and vehicle body design method |
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| Publication Number | Publication Date |
|---|---|
| CN113335319A true CN113335319A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110707684.9A Pending CN113335319A (en) | 2021-06-24 | 2021-06-24 | Vehicle body structure of railway vehicle and vehicle body design method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634735A (en) * | 2003-12-26 | 2005-07-06 | 中南大学 | Design and processing method for streamline train head shape and structure |
| CN101290636A (en) * | 2007-04-18 | 2008-10-22 | 上海磁浮交通工程技术研究中心 | High-speed train head optimized design method |
| CN103625491A (en) * | 2013-07-30 | 2014-03-12 | 南车青岛四方机车车辆股份有限公司 | Overhead air conditioning unit with active pressure-protection function |
| CN104527677A (en) * | 2014-12-01 | 2015-04-22 | 南车青岛四方机车车辆股份有限公司 | Sand-proof railway vehicle |
| CN205930731U (en) * | 2016-08-25 | 2017-02-08 | 青岛欧特美股份有限公司 | Pass through channel device with secondary safeguard function |
| CN205971327U (en) * | 2016-07-19 | 2017-02-22 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle air condensing units and have multiple air conditioning unit of this off -premises station |
| CN109703583A (en) * | 2019-01-07 | 2019-05-03 | 中车株洲电力机车有限公司 | A kind of city rail vehicle |
| EP3312070B1 (en) * | 2016-10-18 | 2020-12-09 | ALSTOM Transport Technologies | Control trailer of a railway vehicle, especially of a high-speed railway vehicle, having reduced aerodynamic drag |
-
2021
- 2021-06-24 CN CN202110707684.9A patent/CN113335319A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634735A (en) * | 2003-12-26 | 2005-07-06 | 中南大学 | Design and processing method for streamline train head shape and structure |
| CN101290636A (en) * | 2007-04-18 | 2008-10-22 | 上海磁浮交通工程技术研究中心 | High-speed train head optimized design method |
| CN103625491A (en) * | 2013-07-30 | 2014-03-12 | 南车青岛四方机车车辆股份有限公司 | Overhead air conditioning unit with active pressure-protection function |
| CN104527677A (en) * | 2014-12-01 | 2015-04-22 | 南车青岛四方机车车辆股份有限公司 | Sand-proof railway vehicle |
| CN205971327U (en) * | 2016-07-19 | 2017-02-22 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle air condensing units and have multiple air conditioning unit of this off -premises station |
| CN205930731U (en) * | 2016-08-25 | 2017-02-08 | 青岛欧特美股份有限公司 | Pass through channel device with secondary safeguard function |
| EP3312070B1 (en) * | 2016-10-18 | 2020-12-09 | ALSTOM Transport Technologies | Control trailer of a railway vehicle, especially of a high-speed railway vehicle, having reduced aerodynamic drag |
| CN109703583A (en) * | 2019-01-07 | 2019-05-03 | 中车株洲电力机车有限公司 | A kind of city rail vehicle |
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Application publication date: 20210903 |
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