CN108951316B - Track telescopic adjusting structure of vibration reduction type magnetic levitation system - Google Patents
Track telescopic adjusting structure of vibration reduction type magnetic levitation system Download PDFInfo
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- CN108951316B CN108951316B CN201810649938.4A CN201810649938A CN108951316B CN 108951316 B CN108951316 B CN 108951316B CN 201810649938 A CN201810649938 A CN 201810649938A CN 108951316 B CN108951316 B CN 108951316B
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- track
- longitudinal guide
- magnetic levitation
- telescopic
- guide groove
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
A vibration reduction type track telescopic adjusting structure of a magnetic levitation system is used for effectively relieving driving problems caused by temperature difference telescopic deformation and beam end deformation of a large-span bridge and reducing vibration of the track telescopic adjusting structure of the magnetic levitation system. The rail comprises a rail panel positioned on a bridge girder body, wherein at least two rows of longitudinal guide grooves are transversely arranged on the bridge girder body at intervals below the rail panel, each row of longitudinal guide grooves consists of longitudinally-spaced longitudinal guide groove units, and longitudinally-extending vertical limit grooves are arranged on two transverse side walls of each longitudinal guide groove unit. Elastic idler wheels which are arranged on the mounting seats through telescopic shafts are arranged in the longitudinal guide groove units, two ends of each telescopic shaft extend into the vertical limit grooves on the same side, and the mounting seats and the track panels are fixedly connected.
Description
Technical Field
The invention relates to a rail transit system, in particular to a track telescopic adjusting structure of a vibration reduction type magnetic levitation system.
Background
The middle-low speed magnetic levitation track traffic adopts a common electromagnet suction type levitation and guiding technology, and levitation and guiding of the vehicle are realized through electromagnetic attraction between the U-shaped electromagnet and the F-shaped steel rail on the vehicle levitation frame. The middle-low speed magnetic levitation track structure which is currently used in China mainly adopts a steel sleeper type, the track mainly comprises a sensing plate, an F-shaped track, an expansion joint, a connecting piece, a fastening piece, an H-shaped steel sleeper, a fastening piece system, a track bed and the like from top to bottom, and the track panel is used as a unit for integral pavement. F rail, steel sleeper and induction plate assemble the track panel into at mill or scene equipment base, and the track panel is connected through F rail joint structure in the scene to guarantee the flexible displacement adjustment of the vertical, horizontal to the difference in temperature that neutralizes vertically enough of track. The design of the F-rail joint structure needs to fully consider the thermal expansion and contraction characteristics of the magnetic levitation track, the track smoothness requirement, the driving stability requirement and the convenience of operation and maintenance, and the connection strength, the stability and the reliability of the F-rail joint structure are the keys of safe, stable and rapid running of the train.
Along with the gradual popularization of the medium-low speed magnetic levitation traffic as a novel urban rail traffic system in large and medium cities and tourist attractions, the situation of various main roads crossing the valley and the cities is faced, when the span of the bridge is increased, the expansion deformation quantity of the bridge is caused by temperature change, and the deformation quantity can reach 200mm or more in the designed temperature range. However, in the urban construction industry standard CJ/T413-2012 general technical Condition for Medium Low speed magnetic levitation traffic track panels, three F-type track joints of type I, type II and type III are defined, but the bearable track joint expansion and contraction amount is limited, and the track joint expansion and contraction amount change range is only 10 mm-40 mm. The oversized rail gap expansion and contraction amount can not meet the running requirements of vehicles, and can not be realized on the structure of the existing F-shaped rail joint.
Along with the popularization of the middle-low speed magnetic levitation traffic in large and medium cities and tourist attractions, the situation of various main roads crossing the valley and the cities is faced, if the common F-shaped rail joint is still adopted, the span of the bridge is limited, the system adaptability of the middle-low speed magnetic levitation traffic on the large-span bridge is influenced, and the research on the track telescopic adjustment structure of the middle-low speed magnetic levitation traffic system suitable for the large-span bridge is needed. Therefore, in chinese patent nos. cn201410203244.X and CN201410203560.7, a track expansion adjusting structure of a medium-low speed magnetic levitation transportation system is disclosed, and the interaction force between the bridge and the track in the extending direction of the line is reduced by using a long slot and a small resistance fastener system, but the requirement on long-term service performance of the slot and the small resistance fastener system is high, and the deformation capability of the bridge is slightly insufficient. However, the problem of overlarge vibration also occurs in the operation process of the traditional telescopic adjusting structure, so that the design and research of the telescopic deformation adjustment of the middle-low speed magnetic levitation track are still necessary under the condition of a large-span bridge.
Disclosure of Invention
The invention aims to solve the technical problem of providing a vibration reduction type track telescopic adjusting structure of a magnetic levitation system, so as to effectively relieve the driving problem caused by the temperature difference telescopic deformation and the beam end deformation of a large-span bridge and reduce the vibration of the track telescopic adjusting structure of the magnetic levitation system.
The technical scheme adopted for solving the technical problems is as follows:
the invention relates to a track telescopic adjusting structure of a vibration reduction type magnetic levitation system, which comprises a track panel positioned on a bridge beam body, and is characterized in that: at least two rows of longitudinal guide grooves are transversely arranged on the bridge girder body at intervals under the track panel, each row of longitudinal guide grooves consists of longitudinally-spaced longitudinal guide groove units, and two transverse side walls of each longitudinal guide groove unit are provided with longitudinally-extending vertical limit grooves; elastic idler wheels which are arranged on the mounting seats through telescopic shafts are arranged in the longitudinal guide groove units, two ends of each telescopic shaft extend into the vertical limit grooves on the same side, and the mounting seats are fixedly connected with the track panel;
the track panel comprises rib plate type frames formed by two ribbed longitudinal connecting plates which are transversely arranged at intervals and sleeper units which are longitudinally arranged at intervals, and supporting units which are longitudinally arranged below the two ribbed longitudinal connecting plates at intervals, wherein each supporting unit is fixedly connected to the bottom surface of the ribbed longitudinal connecting plate through an anchor bolt;
the positions of the supporting units correspond to the positions of the longitudinal guide groove units, and the lower parts of the anchor bolts extend into the corresponding longitudinal guide groove units and are fixedly connected with the mounting seats;
the telescopic shaft consists of a fixed shaft and telescopic shafts sleeved at two ends, a compression spring is arranged between the telescopic shafts and the fixed shaft, and the elastic idler wheels are arranged on the fixed shaft.
The invention has the advantages that the interaction force of the bridge and the track in the extending direction of the line can be reduced, and the large expansion deformation of the large-span bridge caused by temperature change can be released; the elastic rollers can reduce the vibration of the track telescopic adjusting structure, adapt to the deformation of the bridge to a certain extent, improve the stress state of the track and the bridge, and adapt to the large deformation of the bridge; the rail gap change can be reduced, adjacent rail panels are stably connected, and the smoothness of a line is maintained, so that the adaptability of a medium-low speed magnetic levitation traffic system is improved, and the operation is ensured to be safe and stable; the track is simple in structure, can avoid the failure of the action of the telescopic adjusting structure caused by rust of the track components, is convenient to install and process, is easy to maintain, can greatly improve the track laying efficiency, and reduces the investment and the operation and maintenance cost.
Drawings
The specification includes ten drawings as follows:
FIG. 1 is a perspective view of a track panel in a track telescoping adjustment structure of a vibration reduction type magnetic levitation system of the present invention;
FIG. 2 is a perspective view of a rib plate type frame in a track telescoping adjustment structure of a vibration reduction type magnetic levitation system according to the present invention;
FIG. 3 is an exploded view of a track panel in a track telescoping adjustment structure of a vibration damping type magnetic levitation system according to the present invention;
FIG. 4 is a perspective view of a beam in a track telescoping adjustment structure of a vibration damping type magnetic levitation system according to the present invention;
FIG. 5 is a cross-sectional view of a track telescoping adjustment structure of a vibration damping type magnetic levitation system of the present invention;
FIG. 6 is an enlarged view of a portion of a beam and a longitudinal sliding groove in a track telescoping adjustment structure of a vibration damping type magnetic levitation system according to the present invention;
FIG. 7 is an enlarged view of a portion of an elastic roller, a retractable roller, a longitudinal sliding groove and a vertical limiting groove in a track retractable adjustment structure of a vibration damping type magnetic levitation system;
FIG. 8 is a schematic view of the installation of elastic rollers and the structure of a retractable roller in a track retractable adjustment structure of a vibration reduction type magnetic levitation system;
FIG. 9 is a schematic diagram of a cross section of a sleeper unit and an arrangement mode of an additional mass block in a track telescopic adjustment structure of a vibration reduction type magnetic levitation system according to the present invention;
FIG. 10 is a schematic view of a cross section of a sleeper unit and an arrangement of an additional mass block in a track telescoping adjustment structure of a vibration damping type magnetic levitation system according to the present invention;
the components and corresponding indicia are shown: ribbed longitudinal tie plates 11, tie units 12, top plate 121, bottom plate 122, ribs 123, elastic tie plates 13, iron tie plates 14, rail bearing blocks 15, F-rails 16, anchor bolts 20, mounting blocks 21, elastic rollers 22, telescopic shafts 23, fixed shafts 231, telescopic shafts 232, compression springs 233, additional mass blocks 30, elastic members 31, bridge girder 40, longitudinal guide grooves 41, vertical limit grooves 42.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Referring to fig. 3 to 7, the track expansion adjusting structure of the vibration damping type magnetic levitation system of the present invention comprises a track panel located on a bridge beam 40, wherein at least two rows of longitudinal guide grooves are transversely and alternately arranged on the bridge beam 40 below the track panel, each row of longitudinal guide grooves is composed of longitudinally-spaced longitudinal guide groove units 41, and longitudinally-extending vertical limiting grooves 42 are arranged on two transverse side walls of each longitudinal guide groove unit 41. Elastic idler wheels 22 mounted on the mounting seat 21 through telescopic shafts 23 are arranged in the longitudinal guide groove units 41, two ends of each telescopic shaft 23 extend into the vertical limit grooves 42 on the same side, and the mounting seat 21 and the track panel form fixed connection. The track panel is supported on the elastic roller 22 and can slide along the longitudinal guide groove unit 41, so that the longitudinal interaction between the bridge and the track is eliminated, and the large-expansion deformation of the large-span bridge caused by temperature change is released. The length of the longitudinal guide groove unit 41 is determined according to the bridge span, the track structure design temperature range and the structure expansion deformation amount. The arrangement of the elastic roller 22 can reduce the vibration of the track telescopic adjusting structure, adapt to the deformation of the bridge to a certain extent, improve the stress state of the track and the bridge and adapt to the large deformation of the bridge. The rail gap change can be reduced, adjacent rail panels are stably connected, and the smoothness of a line is maintained, so that the adaptability of a medium-low speed magnetic levitation traffic system is improved, and the operation safety and stability are ensured.
Referring to fig. 6, the longitudinal guide groove units 41 and the vertical limit grooves 42 may be prefabricated structures of the bridge beam 40, or may be rigid members embedded in the bridge beam 40.
Referring to fig. 1, 2 and 3, the track panel includes a rib-plate type frame consisting of two ribbed longitudinal connection plates 11 arranged at a lateral interval, sleeper units 12 arranged at a longitudinal interval, and support units arranged at a longitudinal interval below the two ribbed longitudinal connection plates 11, each of which is fixedly connected to the bottom surface of the ribbed longitudinal connection plate 11 by an anchor bolt 20. Referring to fig. 3 and 7, the position of each support unit corresponds to the position of each longitudinal guide groove unit 41, and the lower portion of the anchor bolt 20 extends into the corresponding longitudinal guide groove unit 41 and is fixedly connected with the mounting seat 21. In general, each of the support units is composed of an elastic pad 13, an iron pad 14, and a rail receiving table 15, which are sequentially disposed from top to bottom.
Referring to fig. 7 and 8, the telescopic shaft 23 is composed of a fixed shaft 231 and telescopic shafts 232 fitted around both ends, a compression spring 233 is provided between the telescopic shafts 232 and the fixed shaft 231, and the elastic roller 22 is mounted on the fixed shaft 231. The telescopic shafts 232 at the two ends are matched with the elastic idler wheels 22 and the vertical limiting grooves 42, so that the rail panel can be effectively limited to generate vertical displacement, and smoothness of a line is ensured.
Referring to fig. 3, in order to further reduce the vibration of the track expansion and contraction adjusting structure of the magnetic levitation system, additional mass blocks 30 are disposed on the track panel at intervals in the longitudinal direction, and each additional mass block 30 is fixedly connected to the track panel through an elastic member 31 having rigidity and damping characteristics. Referring to fig. 5 and 9, the cross section of the sleeper unit 12 is i-shaped, and has a top plate 121, a bottom plate 122 and rib plates 123, and F-rails 16 are installed at both longitudinal ends of the top plate 121 by means of bolt assemblies. Referring to fig. 9 and 10, the additional mass 30 is mounted on both sidewalls of the rib 123 or on the bottom surface of the bottom plate 122 by means of elastic members 31.
The foregoing is illustrative of the principles of a track telescoping adjustment structure of a vibration damping type magnetic levitation system according to the present invention, and is not intended to limit the invention to the specific structure and application scope thereof as shown and described, so that all possible modifications and equivalents thereof fall within the scope of the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a damping formula magnetic levitation system track telescopic adjustment structure, includes the track panel that is located on bridge beam body (40), characterized by: at least two rows of longitudinal guide grooves are transversely arranged on the bridge girder body (40) at intervals, each row of longitudinal guide grooves consists of longitudinally-spaced longitudinal guide groove units (41), and longitudinally-extending vertical limit grooves (42) are formed in two transverse side walls of each longitudinal guide groove unit (41); elastic idler wheels (22) which are arranged on the mounting seats (21) through telescopic shafts (23) are arranged in the longitudinal guide groove units (41), two ends of each telescopic shaft (23) extend into the vertical limit grooves (42) on the same side, and the mounting seats (21) are fixedly connected with the track panel;
the track panel comprises rib plate frames formed by two ribbed longitudinal connecting plates (11) which are transversely arranged at intervals and sleeper units (12) which are longitudinally arranged at intervals, and supporting units which are longitudinally arranged below the two ribbed longitudinal connecting plates (11) at intervals, wherein each supporting unit is fixedly connected to the bottom surface of the ribbed longitudinal connecting plate (11) through an anchor bolt (20);
the positions of the supporting units correspond to the positions of the longitudinal guide groove units (41), and the lower parts of the anchoring bolts (20) extend into the corresponding longitudinal guide groove units (41) and are fixedly connected with the mounting seats (21);
the telescopic shaft (23) is composed of a fixed shaft (231) and telescopic shafts (232) sleeved at two ends, a compression spring (233) is arranged between the telescopic shafts (232) and the fixed shaft (231), and the elastic idler wheels (22) are installed on the fixed shaft (231).
2. The track telescopic adjustment structure of a vibration reduction type magnetic levitation system as set forth in claim 1, wherein: each supporting unit is composed of an elastic backing plate (13), an iron backing plate (14) and a rail bearing table (15) which are sequentially arranged from top to bottom.
3. The track telescopic adjustment structure of a vibration reduction type magnetic levitation system as set forth in claim 1, wherein: additional mass blocks (30) are arranged on the track panel at intervals in the longitudinal direction, and each additional mass block (30) is fixedly connected to the track panel through an elastic member (31) with rigidity and damping characteristics.
4. The track telescopic adjustment structure of a vibration reduction type magnetic levitation system as set forth in claim 1, wherein: the cross section of the sleeper unit (12) is I-shaped, and the sleeper unit is provided with a top plate (121), a bottom plate (122) and rib plates (123), and F-shaped rails (16) are arranged at the two longitudinal ends of the top plate (121) through bolt assemblies.
5. A track telescopic adjustment structure of a vibration reduction type magnetic levitation system as set forth in claim 3, wherein: the additional mass (30) is mounted on both side walls of the rib plate (123) or on the bottom surface of the bottom plate (122) through an elastic member (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810649938.4A CN108951316B (en) | 2018-06-22 | 2018-06-22 | Track telescopic adjusting structure of vibration reduction type magnetic levitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810649938.4A CN108951316B (en) | 2018-06-22 | 2018-06-22 | Track telescopic adjusting structure of vibration reduction type magnetic levitation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108951316A CN108951316A (en) | 2018-12-07 |
| CN108951316B true CN108951316B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810649938.4A Active CN108951316B (en) | 2018-06-22 | 2018-06-22 | Track telescopic adjusting structure of vibration reduction type magnetic levitation system |
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| CN (1) | CN108951316B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029541A (en) * | 2019-03-26 | 2019-07-19 | 中铁磁浮交通投资建设有限公司 | A kind of beam type high-speed magnetic floating steel construction section of track in length and breadth |
| CN110029538A (en) * | 2019-03-26 | 2019-07-19 | 中铁磁浮交通投资建设有限公司 | It is a kind of containing the high-speed magnetic suspension rails of the beam type section of track in length and breadth and bridge beam structure |
| CN110029539A (en) * | 2019-03-26 | 2019-07-19 | 中铁磁浮交通投资建设有限公司 | A kind of high speed Maglev beam type steel-concrete combined structure section of track in length and breadth |
| CN110029540A (en) * | 2019-03-26 | 2019-07-19 | 中铁磁浮交通投资建设有限公司 | A kind of high speed Maglev double line box girder and track structure |
| CN110241664A (en) * | 2019-05-14 | 2019-09-17 | 中铁磁浮交通投资建设有限公司 | A kind of high speed Maglev steel-concrete combined structure track plates |
| CN110924243B (en) * | 2019-10-18 | 2020-07-28 | 中铁磁浮交通投资建设有限公司 | Medium-low speed magnetic levitation track sensor detection surface seamless expansion device |
| CN112482210B (en) * | 2020-12-09 | 2021-12-31 | 中铁磁浮交通投资建设有限公司 | Large displacement telescopic device for high-speed magnetic suspension bridge |
| CN113322725B (en) * | 2021-05-21 | 2022-05-17 | 中铁二院工程集团有限责任公司 | Seamless track structure of normally-conducting short-stator magnetic suspension system and installation method thereof |
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| JP2003184006A (en) * | 2001-12-13 | 2003-07-03 | Topy Ind Ltd | Magnetic levitation linear motor train track joint gap adjuster |
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| CN107740313A (en) * | 2017-10-13 | 2018-02-27 | 北京控股磁悬浮技术发展有限公司 | The track and its track joint of a kind of magnetic-levitation train |
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| JPH1082002A (en) * | 1996-09-06 | 1998-03-31 | H S S T Kaihatsu Kk | Joint clearance dispersion type track for railway |
| JP3546932B2 (en) * | 1998-09-28 | 2004-07-28 | 東海ゴム工業株式会社 | Track extension device for floating railway |
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| CN102767136B (en) * | 2012-08-15 | 2014-09-03 | 上海汇城建筑装饰有限公司 | Anti-seismic small deformation expansion device of comb plate |
| MY191562A (en) * | 2015-03-02 | 2022-06-30 | Cn Railway Siyuan Survey & Des | Lowly disposed line structure used in medium-low speed magnetic levitation traffic engineering fill section |
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| CN208472484U (en) * | 2018-06-22 | 2019-02-05 | 中铁二院工程集团有限责任公司 | A kind of damping type magnetic floating system rail telescopic adjustment structure |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003184006A (en) * | 2001-12-13 | 2003-07-03 | Topy Ind Ltd | Magnetic levitation linear motor train track joint gap adjuster |
| CN103938544A (en) * | 2014-05-14 | 2014-07-23 | 中铁二院工程集团有限责任公司 | Track telescopic adjustment structure for medium and low speed magnetic suspension transportation system |
| CN107740313A (en) * | 2017-10-13 | 2018-02-27 | 北京控股磁悬浮技术发展有限公司 | The track and its track joint of a kind of magnetic-levitation train |
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| CN108951316A (en) | 2018-12-07 |
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