CN103966951B - Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure - Google Patents
Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure Download PDFInfo
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Abstract
Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure, effectively to alleviate the temperature difference dilatation of Longspan Bridge and the driving problem caused.It comprises: the reinforcing plate type section of track; Track, be horizontally arranged at interval two row in bridge beam body; Backing plate, be arranged between each track end face and longitudinal junction plate bottom surface, its end face has the spring be horizontally arranged at interval and fixes projection; The horizontal block of sleeper, cross section is L-type, tips upside down on spring and fixes between projection and longitudinal junction plate; Foundation bolt component and elastic layering, foundation bolt component bottom is pre-buried to be fixed in bridge beam body, and track is passed on its top, elastic layering is pressed on the horizontal block of sleeper by backing plate and spring is fixed on projection.
Description
Technical field
The present invention relates to Rail Transit System, particularly a kind of medium-and low-speed maglev traffic system rail telescopic adjustment structure.
Background technology
Medium-and low-speed maglev track traffic adopts the attractive suspension of normal conducting magnetic iron and guiding technique, by the electromagnetic attraction between the U-shaped electromagnet on vehicle suspension frame and F shaped steel rail, realizes suspension and the guiding of vehicle.The medium-and low-speed maglev track structure of current domestic existing application, main employing steel tie pattern, track primarily of the part such as tablet, F rail, expansion coupling, connector and securing member, H profile steel sleeper, fastener system, railway roadbed composition, is that whole unit is mated formation with the section of track from top to bottom.F rail, steel tie and tablet are assembled into the section of track in factory or Assembling base, and the section of track is coupled together by F rail joint design at the scene, to ensure vertical, the horizontal temperature difference telescopic displacement regulated quantity longitudinally enough to neutralization of track.The design of F rail joint design need take into full account the characteristic of expanding with heat and contract with cold of magnetic levitation track, orbital forcing requires, the convenience of train stability sexual demand and operation maintenance, the key that the bonding strength of F rail joint design, stability and reliability are train safe, steadily and fast run.
Consider that medium-and low-speed maglev vehicle suspension control system feature and vehicle driving need, two sections of F rail rail gap size designs are restricted.In city city-building industry standard CJ/T413-2012 " medium-and low-speed maglev traffic section of track general technical specifications ", define I type, II type and type III three kinds of F rail joints, but the rail gap stroke that it can bear also is limited, rail gap stroke excursion is only 10mm ~ 40mm.Existing joint design is the rail gap stroke adapting to two sections of F rails passively, fundamentally can not carry out active adjustment to rail gap stroke.Excessive rail gap stroke, can not meet vehicle driving demand, can not realize in the structure of existing F rail joint.
Domestic and international multiple mechanism all expands the design and researchp of medium-and low-speed maglev track structure, with Japan and Chinese research mechanism in the majority, but because the bridge span adopted at present is less, and beam type is generally simply supported beam or little span concrete continuous beam, research for the dilatation adjuster of medium-and low-speed maglev traffic route middle orbit does not also obtain enough attention, in domestic and international published technical data up to now, related introduction is not yet had to be suitable for the middle lower speed transportation systems rail telescopic adjuster device that long span bridge uses.Along with medium-and low-speed maglev traffic as a kind of new city system of rail traffic in big and medium-sized cities and the popularization gradually of tourist attraction, will in the face of the situation of varied leap river valley and city major road, therefore, for in Longspan Bridge situation, the design and researchp of medium-and low-speed maglev rail telescopic deformation adjustment is just extremely necessary.
At home existing dropped into actual tests line or operation line track structure in, because bridge span is less, the dilatation amount produced because of the temperature difference of bridge and track is also little, substantially, to control within 40mm, this, for vehicle suspension control system and rail joint design, can adapt to this deformation quantity.But, when bridge span increases, variations in temperature will cause the retractable variable of larger bridge, within the scope of design temperature deformation quantity can reach 200mm and more than, continue to use the current medium-and low-speed maglev section of track if continue and be fixed on the track restrained mode adopting general F rail joint to connect in bridge beam body, between the adjacent section of track by fastener, then strictly will limit bridge span in line design, affect the system suitability of medium-and low-speed maglev traffic on long span bridge, be unfavorable for applying of medium-and low-speed maglev technology.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure, effectively to alleviate the temperature difference dilatation of Longspan Bridge and the driving problem caused.
The technical solution adopted for the present invention to solve the technical problems is as follows:
Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure of the present invention, it is characterized in that it comprises: the reinforcing plate type section of track, the sleeper unit that its main body is arranged by longitudinal separation and to be fixed be horizontally arranged at interval two the longitudinal junction plates connected as one, each sleeper unit arranges gusset with welding between longitudinal junction plate; Track, be horizontally arranged at interval two row in bridge beam body; Backing plate, be arranged between each track end face and longitudinal junction plate bottom surface, its end face has the spring be horizontally arranged at interval and fixes projection; The horizontal block of sleeper, cross section is L-type, tips upside down on spring and fixes between projection and longitudinal junction plate; Foundation bolt component and elastic layering, foundation bolt component bottom is pre-buried to be fixed in bridge beam body, and track is passed on its top, elastic layering is pressed on the horizontal block of sleeper by backing plate and spring is fixed on projection.
The invention has the beneficial effects as follows, greatly can reduce the circuit bearing of trend interaction force of bridge and track, improve the stress of track and bridge, effectively discharge the large dilatation that Longspan Bridge produces because of variations in temperature simultaneously, adapt to 40mm and above bridge large deformation; Rail gap can be kept to change unlikely excessive, the section of track that stable connection is adjacent, maintain circuit smooth-going, thus improve the system suitability of medium-and low-speed maglev traffic, guarantee the safety of vehicle, even running; Structure is simple, be convenient to install and processing, and is easy to safeguard, can greatly improve track laying efficiency, reduce investment and operation maintenance cost.
Accompanying drawing explanation
This manual comprises following eight width accompanying drawings:
Fig. 1 is the stereogram of spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 1 of the present invention;
Fig. 2 is the stereogram of backing plate in spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 1 of the present invention;
Fig. 3 is the left view of spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 1 of the present invention;
The top view of Fig. 4 spring pressing type of the present invention medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 1;
Fig. 5 is the stereogram of the reinforcing plate type section of track in spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure of the present invention;
Fig. 6 is the stereogram of spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 2 of the present invention;
Fig. 7 is the left view of spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 2 of the present invention;
Fig. 8 is a stereogram withholding unit in spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure embodiment 2 of the present invention.
Component name shown in figure and corresponding mark: sleeper unit 11, installing hole 11a, longitudinal junction plate 12, gusset 13, foundation bolt component 20, track 21, backing plate 22, spring fix projection 22b, elastic layering 23, the horizontal block 24 of sleeper.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 5, Fig. 1, Fig. 2 and 6, spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure of the present invention comprises: the reinforcing plate type section of track, the sleeper unit 11 that its main body is arranged by longitudinal separation and be horizontally arranged at interval two the longitudinal junction plates 12 connected as one that are fixed, weld between each sleeper unit 11 with longitudinal junction plate 12 and arrange gusset 13; Track 21, be horizontally arranged at interval two row in bridge beam body; Backing plate 22, be arranged between each track 21 end face and longitudinal junction plate 12 bottom surface, its end face has the spring be horizontally arranged at interval and fixes projection 22b; The horizontal block 24 of sleeper, cross section is L-type, tips upside down on spring and fixes between projection 22b and longitudinal junction plate 12; Foundation bolt component 20 and elastic layering 23, foundation bolt component 20 bottom is pre-buried to be fixed in bridge beam body, and track 21 is passed on its top, elastic layering 23 is pressed on the horizontal block 24 of sleeper by backing plate 22 and spring is fixed on projection 22b.
Because the retractable variable of bridge is determined by bridge material self-characteristic, deformation quantity can not be controlled from structure design, for this reason, for reducing the impact of bridge stroke on driving, can only consider, longitudinally discharging the flexible of bridge, to make it can have relative motion between track structure, thus need the way of restraint fundamentally changing operational railway structure, by the horizontal fixed constraint of existing bolt upper bottom single sleeper i shaped steel, change the constraint on reinforcing plate type section of track structure longitudinal beam into.
With reference to Fig. 5, the cross section of described sleeper unit 11 is I shape, and gusset 13 is symmetricly set in its both sides.Longitudinal two ends of sleeper unit 11 offer installing hole 11a, and F rail, by being detachably mounted on sleeper unit 11 through installing hole 11a bolt assembly, ensures, without relative motion between the section of track and F rail, to form rail module.
Reference is by the embodiment 1 shown in Fig. 1 to Fig. 4, and the plane projection of described track 21, backing plate 22 is rectangle, below the gusset 13 of each sleeper unit 11, respectively arrange one group.On backing plate 22, spring fixes the quantity of projection 22b is two, and these two springs fix inner side, the outside that projection 22b lays respectively at longitudinal junction plate 12, to coordinate the fixing of spring.The horizontal block 24 of sleeper is placed on spring and fixes between projection and sleeper, to adjust reinforcing plate type section of track lateral attitude, and limits the lateral displacement of the reinforcing plate type section of track.All form at 4 below each sleeper unit 11 two ends to withhold.
Reference is by the embodiment 2 shown in Fig. 6 to Fig. 8, and the plane projection of described track 21, backing plate 22 is T-shaped, below each sleeper unit 11, respectively arrange one group.On backing plate 22, spring fixes the quantity of projection 22b is three, and wherein two springs fix the inner side that projection 22b is positioned at longitudinal junction plate 12, and another is then positioned at the outside of longitudinal junction plate 12.All form at 3 below each sleeper unit 11 two ends to withhold.
Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure of the present invention utilizes foundation bolt component and elastic layering 23, track 21, backing plate 22 are constituted a movable body with bridge, the frictional force with carrier module Contact face bottom the section of track is converted to by the buckle press of elastic layering, realize longitudinal relative motion of carrier module and the section of track, to discharge the flexible large deformation of Longspan Bridge.The type selecting of elastic layering 23 material should fully in conjunction with maglev vehicle by time traction, braking characteristic and frictional behavior, elastic layering 23 buckle press and longitudinal resistance characteristic and determine between the section of track and backing plate 22.In embodiment 1, track 21 is arranged perpendicular to section of track tie-beam direction, in conjunction with section of track structural strength and flexural deformation characteristic, rational track 21 placement position can be designed, be in vacant state bottom single sleeper i shaped steel and the structural strength caused and flexural deformation problem to eliminate.In embodiment 2, the T-shaped design of track 21 and backing plate 22, fully can ensure rail telescopic adjuster intensity and bending resistance deformability, simultaneously by suitable elastic-strip pressure and longitudinal resistance design, effectively can eliminate the section of track motion of maglev vehicle by causing.
Some principles of spring pressing type low speed magnetic floating traffic system rail telescopic adjustment structure in the above the present invention that just explains through diagrams, be not the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (5)
1. spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure, it is characterized in that it comprises: the reinforcing plate type section of track, the sleeper unit (11) that its main body is arranged by longitudinal separation and be horizontally arranged at interval two the longitudinal junction plates (12) connected as one that are fixed, each sleeper unit (11) arranges gusset (13) with welding between longitudinal junction plate (12); Track (21), be horizontally arranged at interval two row in bridge beam body; Backing plate (22), is arranged between each track (21) end face and longitudinal junction plate (12) bottom surface, and its end face has the spring be horizontally arranged at interval and fixes projection (22b); The horizontal block (24) of sleeper, cross section is L-type, tips upside down on spring and fixes between projection (22b) and longitudinal junction plate (12); Foundation bolt component (20) and elastic layering (23), foundation bolt component (20) bottom is pre-buried to be fixed in bridge beam body, and track (21) is passed on its top, elastic layering (23) is pressed on the horizontal block (24) of sleeper by backing plate (22) and spring is fixed on projection (22b).
2. spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure as claimed in claim 1, it is characterized in that: longitudinal two ends of described sleeper unit (11) offer installing hole (11a), F rail is detachably mounted on sleeper unit (11) by the bolt assembly through installing hole (11a).
3. spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure as claimed in claim 2, is characterized in that: the cross section of described sleeper unit (11) is I shape, and gusset (13) is symmetricly set in its both sides.
4. spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure as claimed in claim 3, it is characterized in that: the plane projection of described track (21), backing plate (22) is rectangle, respectively arrange one group in gusset (13) below of each sleeper unit (11); The quantity that the upper spring of backing plate (22) fixes projection (22b) is two, and these two springs fix inner side, the outside that projection (22b) lays respectively at longitudinal junction plate (12).
5. spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure as claimed in claim 3, it is characterized in that: the plane projection of described track (21), backing plate (22) is T-shaped, respectively arrange one group in each sleeper unit (11) below; The quantity that the upper spring of backing plate (22) fixes projection (22b) is three, wherein two springs fix the inner side that projection (22b) is positioned at longitudinal junction plate (12), and another is then positioned at the outside of longitudinal junction plate (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410203560.7A CN103966951B (en) | 2014-05-14 | 2014-05-14 | Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure |
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| CN201410203560.7A CN103966951B (en) | 2014-05-14 | 2014-05-14 | Spring pressing type medium-and low-speed maglev traffic system rail telescopic adjustment structure |
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| CN103966951A CN103966951A (en) | 2014-08-06 |
| CN103966951B true CN103966951B (en) | 2015-12-30 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105568839B (en) * | 2015-12-17 | 2017-07-11 | 中铁第四勘察设计院集团有限公司 | Rail track traffic two-wire track girder is embraced in a kind of magnetic suspension |
| CN105568838B (en) * | 2015-12-17 | 2017-07-11 | 中铁第四勘察设计院集团有限公司 | Rail track traffic two-wire track girder is embraced in a kind of magnetic suspension |
| CN109024109A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | The multiple degrees of freedom support of medium-and low-speed maglev bridge big displacement modularization telescopic device |
| CN109024105B (en) * | 2018-09-28 | 2024-03-15 | 中铁磁浮交通投资建设有限公司 | Hinged transverse moving device of middle-low speed magnetic levitation bridge large-displacement telescopic device |
| CN109024107B (en) * | 2018-09-28 | 2024-03-15 | 中铁磁浮交通投资建设有限公司 | Large displacement telescoping device of middle-low speed magnetic levitation track beam |
| CN109024106B (en) * | 2018-09-28 | 2024-03-15 | 中铁磁浮交通投资建设有限公司 | Longitudinal beam sliding device of medium-low speed magnetic levitation bridge large-displacement telescopic device |
| 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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| JP2010255363A (en) * | 2009-04-28 | 2010-11-11 | Mitsubishi Heavy Ind Ltd | Sleeper fastening structure of magnetic levitation system |
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| CN203923903U (en) * | 2014-05-14 | 2014-11-05 | 中铁二院工程集团有限责任公司 | Low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type |
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Patent Citations (7)
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| JP2003184006A (en) * | 2001-12-13 | 2003-07-03 | Topy Ind Ltd | Magnetic levitation linear motor train track joint gap adjuster |
| CN201116366Y (en) * | 2007-09-30 | 2008-09-17 | 刘名君 | Bridge orbit longitudinal separation device |
| JP2010255363A (en) * | 2009-04-28 | 2010-11-11 | Mitsubishi Heavy Ind Ltd | Sleeper fastening structure of magnetic levitation system |
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