CN1326732C - Design and processing method for streamline train head shape and structure - Google Patents
Design and processing method for streamline train head shape and structure Download PDFInfo
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- CN1326732C CN1326732C CNB200310120809XA CN200310120809A CN1326732C CN 1326732 C CN1326732 C CN 1326732C CN B200310120809X A CNB200310120809X A CN B200310120809XA CN 200310120809 A CN200310120809 A CN 200310120809A CN 1326732 C CN1326732 C CN 1326732C
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- 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
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Abstract
The invention belongs to the field of railway vehicle types and body parts, in particular to a railway streamline train, which comprises a railway speed-up locomotive, a speed-up internal combustion motor train unit, a motor train of a speed-up motor train unit, a motor train of a high-speed motor train unit and the head shape and the structural design of a high-speed magnetic suspension train, and is characterized in that: the head shape of the streamline train is formed by a plurality of NUBRS curved surface sheets, and the middle molded line of the curved surface sheet is dynamically and automatically generated or adjusted to form the head shape of the streamline train; and then the planar curved beam with the head structure of a spatial net structure and the skin with the same shape of the head are assembled and welded to form the head of the streamline train.
Description
Technical field:
The invention belongs to the kind and the body part field of rolling stock, relate in particular to the railway streamlined train, the motor-car that comprises railway speed increase locomotive, speed-raising diesel coach set and speed-raising battery-driven car group, the motor-car of high speed electric car group, the head configuration of high-speed maglev train and structure design.
Background technology:
Existing streamlined train head configuration method of designing has and adopts the hand-designed molded lines and with the method for computer drawing Coons appearance curved surface or NURBS (Non Uniform Rational B-Spline Surface) curved surface; The method that also has employing that monoblock train head configuration curved surface is represented with certain unified mathematical function.
Method of designing for the streamlined train head construction then has employing that head construction is designed to the carrying structure that traditional regular section bar forms, and profile then links to each other with other composite material and forms; Also form with profile covering assembly welding again by adopting the section bar that the head construction employing is consistent with the profile covering such as channel-section steel, angle steel etc. to form carrying structure.
Mainly adopt the method for manual method or designing mould or frock for streamlined train head construction job operation.
Normally labour intensity is big, the production cycle is long for existing method.
Summary of the invention:
The objective of the invention is to propose a kind ofly be used for streamlined train head aerodynamic configuration, structure design and the control of head skeleton beam number of packages and process incorporate method.This method can greatly alleviate design, workmen's labour intensity, shortens the production cycle, has guaranteed product design effectively, and realization streamlined train head configuration designs, makes integrated.
Technical scheme of the present invention is, the streamlined train head configuration is formed with NURBS (the NonUniform Rational B-Spline Surface) patch of polylith, and the middle molded lines by dynamic auto generation or adjusting control patch forms the streamlined train head configuration; To adopt the cancellated bend sheet-beam in space to become the stream line pattern head configuration again with the covering assembly welding consistent with head configuration.It comprises:
1. streamlined train head configuration method of designing is the controlling point of elder generation with input, and synthetic non-uniform rational B-spline NURBS (Non Uniform Rational B-Spline Surface) curve forms the principal mode line; Suitably increase some intermediate controlled molded lines according to the needs that generate appearance curved surface again, these molded lines are carried out the space on-the-fly modify, make it constitute one group of netted controllable type line in space; Then these molded lines are disconnected in the space, be linked to be the three-dimensional profile patch again; These patchs are tangent in the space, just formed required appearance curved surface.The appearance curved surface that generates is tested with multiple surface smoothing methods such as curved surface illumination, contour line, iso-curvature lines, obtain final appearance curved surface.With point or line location, just can obtain final shape data at curved surface.
2. streamlined train head plate girder construction method of designing is the three-dimensional position of first interactively from the definite bend sheet-beam of appearance curved surface, all plane songs to be determined
The cloth postpone of beam, data are directly outputed to carry out strength analysis in the structure analysis software, after intensity meets the demands, on the three-dimensional position of bend sheet-beam, generate the CAD block diagram of plate-girder, on the plate-girder block diagram, generate the CAD planar view that satisfies processing request simultaneously.
3. streamlined train head plate girder construction numerical-control processing method is earlier the plate-girder CAD planar view that has generated to be carried out process inspection, treat the outline and the interior outline data of the qualified back of technology extraction numerical control cutting from plate-girder CAD planar view, again the NURBS in outline and the inner profile curve (Non UniformRational B-Spline Surface) curve is adopted the line-fitting method, convert linear portion to, and data can be produced the standard interface DXF data file output that is used for most of numerically-controlled machine tools on the one hand with designated precision; On the other hand also can be according to the concrete numerically-controlled machine tool model of producer, the numerical control code of establishment designation number controlled machine directly is put on the data lathe and processes.
Streamlined train head configuration of the present invention and structural design and processing method compared with prior art, its advantage is as follows:
1. the present invention has greatly alleviated design, workmen's labour intensity, has shortened the production cycle, has guaranteed product design effectively, realized the design of streamlined train head configuration, make integrated.
2. the method for designing of streamlined train head configuration of the present invention is compared with adopting the method that monoblock train head configuration curved surface is represented with certain unified mathematical function, has greater flexibility in configuration design.When containing concrete appointment on the appearance curved surface and require the rule parsing curved surface (need adopt the cylinder curved surface as front window, side door need adopt plane etc.), inapplicable with the method that unified mathematical function is represented.With adopt the hand-designed molded lines and compare with the method for computer drawing Coons appearance curved surface or nurbs surface, molded lines in the middle of this method can generate as required automatically, molded lines in the middle of on-the-fly modifying, automatically molded lines is disconnected in the space, automatically generate appearance curved surface, have multiple appearance curved surface fairing inspection method.Have greater flexibility or higher work efficiency in design.
3. the method for designing of streamlined train head plate-girder of the present invention, adopt the carrying structure that head construction is designed to traditional regular section bar formation with the head construction method of designing, profile is compared with the continuous method that forms of other composite material, it is simple not only to have operation, save the driver's cab inner space, and can guarantee the characteristics that profile covering and plate-girder carrying structure are consistent.With adopt common section bar (as channel-section steel, angle steel etc.) to form carrying structure to compare with the method that profile covering assembly welding forms again, solved common section bar for guaranteeing that the unmanageable problem of beam is twisted in appearance when consistent with profile.The method of designing of streamlined train head plate-girder of the present invention had both guaranteed that the mode that streamlined contour and carrying structure are integrated carried out structure design, avoided occurring distortion beam problem again, had good manufacturing and assembly process process simultaneously.
4. the data job operation of streamlined train head plate-girder of the present invention has solved the manufacturing and the assembly process process problem of streamlined train head plate girder construction skeleton.Owing to adopt the bend sheet-beam structure, generally always have on one side can not be directly used in numerical control machining for free curve.Employing converts nurbs curve line-fitting method to designated precision linear portion, data can be produced on the one hand the standard interface DXF data file output that is used for most of numerically-controlled machine tools; On the other hand also can be according to the concrete numerically-controlled machine tool model of producer, the numerical control code of establishment designation number controlled machine directly is put on the data lathe and processes.
5. streamlined train head configuration of the present invention and structure Design job operation will be pass by traditional by multidisciplinary cooperation work consuming time such as design, technology, processing, concentrate and finish automatically by computing machine, greatly alleviated design, workmen's labour intensity, shortened the production cycle, guaranteed product design effectively, realized design, make integrated.At present, this method overall application has obtained significant social, economic benefit in China's streamlined train car body design, manufacturing, have broad application prospects.
Description of drawings:
Fig. 1 is a streamlined train head configuration cellular structure scheme drawing
Fig. 2 is a streamlined train head plate girder construction scheme drawing
The specific embodiment:
Be described further below in conjunction with accompanying drawing:
1. streamlined train head configuration method of designing is the controlling point of elder generation with input, and synthetic non-uniform rational B-spline NURBS (Non Uniform Rational B-Spline Surface) curve forms the principal mode line; Suitably increase some intermediate controlled molded lines according to the needs that generate appearance curved surface again, these molded lines are carried out the space on-the-fly modify, make it constitute one group of netted controllable type line in space; Then these molded lines are disconnected in the space, be linked to be the three-dimensional profile patch again; These patchs are tangent in the space, just formed required appearance curved surface.The appearance curved surface that generates is tested with multiple surface smoothing methods such as curved surface illumination, contour line, iso-curvature lines, obtain final appearance curved surface.With point or line location, just can obtain final shape data at curved surface.
2. streamlined train head plate girder construction method of designing is first interactively is determined bend sheet-beam from appearance curved surface a three-dimensional position, the cloth postpone of all bend sheet-beam to be determined, data are directly outputed to carry out strength analysis in the structure analysis software, after intensity meets the demands, on the three-dimensional position of bend sheet-beam, generate the CAD block diagram of plate-girder, on the plate-girder block diagram, generate the CAD planar view that satisfies processing request simultaneously.
3. streamlined train head plate girder construction numerical-control processing method is earlier the plate-girder CAD planar view that has generated to be carried out process inspection, treat the outline and the interior outline data of the qualified back of technology extraction numerical control cutting from plate-girder CAD planar view, again the nurbs curve in outline and the inner profile curve is adopted the line-fitting method, convert linear portion to, and data can be produced the standard interface DXF data file output that is used for most of numerically-controlled machine tools on the one hand with designated precision; On the other hand also can be according to the concrete numerically-controlled machine tool model of producer, the numerical control code of establishment designation number controlled machine directly is put on the data lathe and processes.
Claims (1)
1. streamlined train head configuration and structure Design, job operation is characterized in that:
1. streamlined train head configuration method of designing is the controlling point of elder generation with input, and synthetic non-uniform rational B-spline NURBS (Non Uniform Rational B-Spline Surface) curve forms the principal mode line; Suitably increase some intermediate controlled molded lines according to the needs that generate appearance curved surface again, these molded lines are carried out the space on-the-fly modify, make it constitute one group of netted controllable type line in space; Then these molded lines are disconnected in the space, be linked to be the three-dimensional profile patch again; These patchs are tangent in the space, just formed required appearance curved surface; The appearance curved surface that generates is tested with multiple surface smoothing methods such as curved surface illumination, contour line, iso-curvature lines, obtain final appearance curved surface; With point or line location, obtain final shape data at curved surface;
2. streamlined train head plate girder construction method of designing is first interactively is determined bend sheet-beam from appearance curved surface a three-dimensional position, the cloth postpone of all bend sheet-beam to be determined, data are directly outputed to carry out strength analysis in the structure analysis software, after intensity meets the demands, on the three-dimensional position of bend sheet-beam, generate the CAD block diagram that plate dyes, on the plate-girder block diagram, generate the CAD planar view that satisfies processing request simultaneously;
3. streamlined train head plate girder construction numerical-control processing method is earlier the plate-girder CAD planar view that has generated to be carried out process inspection, treat the outline and the interior outline data of the qualified back of technology extraction numerical control cutting from plate-girder CAD planar view, again the NURBS in outline and the inner profile curve (Non UniformRational B-Spline Surface) curve is adopted the line-fitting method, convert linear portion to, and data can be produced the standard interface DXF data file output that is used for most of numerically-controlled machine tools on the one hand with designated precision; On the other hand also can be according to the concrete numerically-controlled machine tool model of producer, the numerical control code of establishment designation number controlled machine directly is put on the data lathe and processes.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200310120809XA CN1326732C (en) | 2003-12-26 | 2003-12-26 | Design and processing method for streamline train head shape and structure |
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| CNB200310120809XA CN1326732C (en) | 2003-12-26 | 2003-12-26 | Design and processing method for streamline train head shape and structure |
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| CN1634735A CN1634735A (en) | 2005-07-06 |
| CN1326732C true CN1326732C (en) | 2007-07-18 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290636B (en) * | 2007-04-18 | 2012-02-08 | 上海磁浮交通工程技术研究中心 | High-speed train head optimized design method |
| CN100462881C (en) * | 2007-10-30 | 2009-02-18 | 浙江大学宁波理工学院 | Oscillating follower space cam groove non-equal diameter digital control processing method |
| CN101482979B (en) * | 2008-12-30 | 2010-09-29 | 清华大学 | Fairing-optimized CAD method for NURBS space curve curvature continuous split joint |
| EP2428421B1 (en) | 2010-09-10 | 2017-07-19 | Bombardier Transportation GmbH | Vehicle component with a recess covered by a flow of air |
| CN102201025B (en) * | 2011-07-08 | 2012-09-19 | 中国科学院力学研究所 | Design method of head form of high-speed train |
| CN102629291B (en) * | 2012-03-21 | 2013-06-05 | 西北工业大学 | Analyzing and designing method for structure with holes and structure with components |
| CN103365251A (en) * | 2013-07-08 | 2013-10-23 | 中国北车集团大同电力机车有限责任公司 | Steel structure implementation method for streamline-shaped contour of locomotive |
| CN105620500B (en) * | 2014-10-28 | 2020-01-14 | 上海略帷汽车设计有限公司 | Balance pressure type high-speed train head |
| CN107169171A (en) * | 2017-04-20 | 2017-09-15 | 中车青岛四方机车车辆股份有限公司 | A kind of EMUs head dummy design method |
| CN109625014A (en) * | 2018-12-12 | 2019-04-16 | 中车青岛四方机车车辆股份有限公司 | A kind of vehicle head structure of rail vehicle |
| CN113335319A (en) * | 2021-06-24 | 2021-09-03 | 中车青岛四方机车车辆股份有限公司 | Vehicle body structure of railway vehicle and vehicle body design method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3874305A (en) * | 1972-12-29 | 1975-04-01 | Japan National Railway | Robot locomotive for classifying rolling stocks |
| US5817934A (en) * | 1995-07-20 | 1998-10-06 | Westinghouse Air Brake Company | Head of train device |
| CN2542529Y (en) * | 2002-03-27 | 2003-04-02 | 中南大学 | Train head end cover opening and closing device |
| CN1446722A (en) * | 2002-03-26 | 2003-10-08 | 中南大学 | Streamline movable side window in driver's cab of train |
-
2003
- 2003-12-26 CN CNB200310120809XA patent/CN1326732C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3874305A (en) * | 1972-12-29 | 1975-04-01 | Japan National Railway | Robot locomotive for classifying rolling stocks |
| US5817934A (en) * | 1995-07-20 | 1998-10-06 | Westinghouse Air Brake Company | Head of train device |
| CN1446722A (en) * | 2002-03-26 | 2003-10-08 | 中南大学 | Streamline movable side window in driver's cab of train |
| CN2542529Y (en) * | 2002-03-27 | 2003-04-02 | 中南大学 | Train head end cover opening and closing device |
Non-Patent Citations (4)
| Title |
|---|
| 中华之星高速列车综合空气动力性能研究 田红旗，梁习锋，机车电传动，第23卷第5期 2003 * |
| 列车空气动力性能研究及外形结构设计方法 田红旗，梁习锋，许平，中国铁道科学，第23卷第5期 2002 * |
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| 高速列车机车用复合材料车头盖的研制 刘钧，马良，纤维复合材料，第36卷第4期 2003;列车空气动力性能研究及外形结构设计方法 田红旗，梁习锋，许平，中国铁道科学，第23卷第5期 2002;中华之星高速列车综合空气动力性能研究 田红旗，梁习锋，机车电传动，第23卷第5期 2003 * |
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