CN103966951A - Elastic strip pressing type low and medium speed magnetic levitation traffic system track stretching adjusting structure - Google Patents
Elastic strip pressing type low and medium speed magnetic levitation traffic system track stretching adjusting structure Download PDFInfo
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- CN103966951A CN103966951A CN201410203560.7A CN201410203560A CN103966951A CN 103966951 A CN103966951 A CN 103966951A CN 201410203560 A CN201410203560 A CN 201410203560A CN 103966951 A CN103966951 A CN 103966951A
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Abstract
An elastic strip pressing type low and medium speed magnetic levitation traffic system track stretching adjusting structure aims to effectively solving the traffic problem caused by temperature difference stretching deformation of a large-span bridge. The elastic strip pressing type low and medium speed magnetic levitation traffic system track stretching adjusting structure comprises a rib plate type track row, track bearing tables, base plates, sleeper transverse check blocks, foundation bolt assemblies and elastic pressing strips. The track bearing tables are transversely arranged in two rows on a bridge body in a spaced mode. The base plates are arranged between the top faces of all the track bearing tables and the bottom face of a longitudinal connecting plate, and elastic strip fixing lugs transversely arranged at intervals are arranged on the top faces of the cushion plates. The cross section of the sleeper transverse check blocks is in an L shape, the sleeper transverse check blocks are reversely buckled between the elastic strip fixing lugs and the longitudinal connecting plate. The lower portions of the foundation bolt assemblies are pre-buried and fixed in the bridge body, and the upper portions of the foundation bolt assemblies penetrate through the track bearing tables and the base plates to press the elastic pressing strips tightly on the sleeper transverse check blocks and the elastic strip fixing lugs.
Description
Technical field
The present invention relates to Rail Transit System, particularly a kind of middle low speed magnetic floating traffic system rail telescopic adjustment structure.
Background technology
Middle low speed magnetic floating track traffic adopts the attractive suspension of normal conducting magnetic iron and guiding technique, by the U-shaped electromagnet on vehicle suspension frame and the electromagnetic attraction between F shaped steel rail, realizes suspension and the guiding of vehicle.The middle low speed magnetic floating track structure of domestic existing application at present, the main steel tie pattern that adopts, track is mainly partly comprised of tablet, F rail, expansion coupling, connector and securing member, H shaped steel sleeper, fastener system, railway roadbed etc. from top to bottom, and the section of track of take is mated formation as whole unit.F rail, steel tie and tablet are assembled into the section of track in factory or Assembling base, and the section of track couples together by F rail joint design at the scene, vertical, horizontal to neutralizing longitudinally enough temperature difference telescopic displacement regulated quantitys to guarantee track.The design of F rail joint design need take into full account the convenience of the characteristic of expanding with heat and contract with cold, rail smooth requirement, train stability sexual demand and the operation maintenance of magnetic levitation track, and bonding strength, stability and the reliability of F rail joint design is train safe, key steady and that move fast.
In consideration, Low-speed maglev vehicle suspension control system feature and vehicle driving need, and the design of two sections of F rail rail gap sizes is restricted.In city city-building industry standard CJ/T413-2012 < < in low speed magnetic floating traffic section of track general technical specifications > >, I type, II type and three kinds of F rail joints of III type have been defined, but the rail gap stroke that it can bear is also limited, rail gap stroke excursion is only 10mm～40mm.Existing joint design is the rail gap stroke that adapts to passively two sections of F rails, can not fundamentally to rail gap stroke, carry out active adjustment.Excessive rail gap stroke, can not meet vehicle driving demand, can not in the structure of existing F rail joint, realize.
Domestic and international a plurality of mechanism has all launched the design and researchp of middle low speed magnetic floating track structure, in the majority with Japan and Chinese research mechanism, but because the bridge span adopting is at present less, and beam type is generally simply supported beam or little span concrete continuous beam, research for the dilatation adjuster of middle low speed magnetic floating traffic route middle orbit does not also obtain enough attention, in domestic and international published technical data up to now, not yet there is the relevant middle lower speed transportation systems rail telescopic adjuster device that is suitable for using on long span bridge of introducing.Along with middle low speed magnetic floating 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 be in the face of the situation of varied leap river valley and city major road, therefore, in Longspan Bridge situation, the design and researchp of middle low speed magnetic floating rail telescopic deformation adjustment is just extremely necessary.
At home existing dropped into actual tests line or operation line track structure in, because of bridge span less, the dilatation amount producing because of the temperature difference of bridge and track is also little, substantially can be controlled in 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, if continue, continue to use the track restrained mode that the current middle low speed magnetic floating section of track is fixed in bridge beam body, is adopted between the adjacent section of track general F rail joint to connect by fastener, in line design, will strictly limit bridge span, in impact, the system suitability of low speed magnetic floating traffic on long span bridge, is unfavorable for applying of middle low speed magnetic floating technology.
Summary of the invention
Technical problem to be solved by this invention is to provide low speed magnetic floating traffic system rail telescopic adjustment structure in a kind of spring pressing type, the driving problem causing effectively to alleviate the temperature difference dilatation of Longspan Bridge.
The technical solution adopted for the present invention to solve the technical problems is as follows:
Low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type 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 two the longitudinal junction plates that are horizontally arranged at interval that are fixed and connect as one, between each sleeper unit and longitudinal junction plate, welding arranges gusset; Track, two row are horizontally arranged at interval in bridge beam body; Backing plate, is arranged at each track end face and longitudinally between junction plate bottom surface, and its end face has fixedly projection of the spring that is horizontally arranged at interval; The horizontal block of sleeper, cross section is L-type, tips upside down on fixedly projection and longitudinally between junction plate of spring; Stone bolt assembly and elastic layering, stone bolt assembly bottom is pre-buried to be fixed in bridge beam body, and its top is pressed on the horizontal block of sleeper and spring fixedly on projection through track, backing plate by elastic layering.
The invention has the beneficial effects as follows, can greatly 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; Can keep rail gap to change unlikely excessive, the adjacent section of track of stable connection, maintains circuit smooth-going, thereby the system suitability of low speed magnetic floating traffic in improving is guaranteed safety, the even running of vehicle; Simple in structure, be convenient to install and processing, and be 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 low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 1 in spring pressing type of the present invention;
Fig. 2 is the stereogram of backing plate in low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 1 in spring pressing type of the present invention;
Fig. 3 is the left view of low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 1 in spring pressing type of the present invention;
The top view of low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 1 in Fig. 4 spring pressing type of the present invention;
Fig. 5 is the stereogram of the reinforcing plate type section of track in low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type of the present invention;
Fig. 6 is the stereogram of low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 2 in spring pressing type of the present invention;
Fig. 7 is the left view of low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 2 in spring pressing type of the present invention;
Fig. 8 is a stereogram of withholding unit in low speed magnetic floating traffic system rail telescopic adjustment structure embodiment 2 in spring pressing type of the present invention.
The title of member shown in figure and corresponding mark: sleeper unit 11, installing hole 11a, longitudinal junction plate 12, gusset 13, stone bolt assembly 20, track 21, backing plate 22, spring be projection 22b, elastic layering 23, the horizontal block 24 of sleeper fixedly.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 5, Fig. 1, Fig. 2 and 6, in spring pressing type of the present invention, low speed magnetic floating traffic system rail telescopic adjustment structure comprises: the reinforcing plate type section of track, the sleeper unit 11 that its main body is arranged by longitudinal separation and two the longitudinal junction plates 12 that are horizontally arranged at interval that are fixed and connect as one, between each sleeper unit 11 and longitudinal junction plate 12, welding arranges gusset 13; Track 21, two row are horizontally arranged at interval in bridge beam body; Backing plate 22, is arranged at each track 21 end faces and longitudinally between junction plate 12 bottom surfaces, and its end face has fixedly projection 22b of the spring that is horizontally arranged at interval; The horizontal block 24 of sleeper, cross section is L-type, tips upside down on fixedly projection 22b and longitudinally between junction plate 12 of spring; Stone bolt assembly 20 and elastic layering 23, stone bolt assembly 20 bottoms are pre-buried to be fixed in bridge beam body, and its top is pressed on the horizontal block 24 of sleeper and spring fixedly on projection 22b through track 21, backing plate 22 by elastic layering 23.
Because the retractable variable of bridge is determined by bridge material self-characteristic, can not control deformation quantity from structure design, for this reason, for reducing the impact of bridge stroke on driving, can only consider longitudinally discharging the flexible of bridge, make it and track structure between can have relative motion, thereby need to fundamentally change the way of restraint of existing track structure, horizontal fixed constraint by the upper existing bolt in single sleeper i shaped steel bottom, changes 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, without relative motion, forms rail module between the assurance section of track and F rail.
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 arranges one group.On backing plate 22 spring fixedly the quantity of projection 22b be two, these two springs fixedly projection 22b lay respectively at inner side, the outside of longitudinal junction plate 12, to coordinate the fixing of spring.The horizontal block 24 of sleeper is placed on spring fixedly 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.Each 11 belows, two ends, sleeper unit all form at 4 and 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 shape, below each sleeper unit 11, respectively arranges one group.On backing plate 22 spring fixedly the quantity of projection 22b be three, wherein two springs fixedly projection 22b be positioned at the inner side of longitudinal junction plate 12, another is positioned at the outside of longitudinal junction plate 12.Each 11 belows, two ends, sleeper unit all form at 3 and withhold.
In spring pressing type of the present invention, low speed magnetic floating traffic system rail telescopic adjustment structure is utilized stone bolt assembly and elastic layering 23, track 21, backing plate 22 have been formed to a movable body with bridge, by the buckle press of elastic layering, be converted to the frictional force of section of track bottom and carrier module Contact face, 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 materials should be fully in conjunction with maglev vehicle by time traction, braking characteristic and the section of track and 22 frictional behaviors of backing plate, elastic layering 23 buckle presses and longitudinal resistance characteristic determine.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, can design rational track 21 placement positions, the structural strength and the flexural deformation problem that to eliminate single sleeper i shaped steel bottom, in vacant state, cause.In embodiment 2, the T-shaped design of track 21 and backing plate 22, can fully guarantee rail telescopic adjuster intensity and bending resistance deformability, designs by suitable elastic-strip pressure and longitudinal resistance simultaneously, can effectively eliminate maglev vehicle and move by the section of track 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 the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (5)
1. low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type, 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 two the longitudinal junction plates (12) that are horizontally arranged at interval that are fixed and connect as one, between each sleeper unit (11) and longitudinal junction plate (12), welding arranges gusset (13); Track (21), two row are horizontally arranged at interval in bridge beam body; Backing plate (22), is arranged at each track (21) end face and longitudinally between junction plate (12) bottom surface, and its end face has fixedly projection (22b) of the spring that is horizontally arranged at interval; The horizontal block of sleeper (24), cross section is L-type, tips upside down on fixedly projection (22b) and longitudinally between junction plate (12) of spring; Stone bolt assembly (20) and elastic layering (23), pre-buried being fixed in bridge beam body in stone bolt assembly (20) bottom, its top is pressed on the horizontal block of sleeper (24) and spring fixedly on projection (22b) through track (21), backing plate (22) by elastic layering (23).
2. low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type 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. low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type 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. low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type as claimed in claim 3, it is characterized in that: the plane projection of described track (21), backing plate (22) is rectangle, in gusset (13) below of each sleeper unit (11), respectively arrange one group; The upper spring of backing plate (22) the fixedly quantity of projection (22b) is two, these two change into spring fixedly projection (22b) lay respectively at inner side, the outside of longitudinal junction plate (12).
5. low speed magnetic floating traffic system rail telescopic adjustment structure in spring pressing type as claimed in claim 3, it is characterized in that: the plane projection of described track (21), backing plate (22) is T shape, in each below, sleeper unit (11), respectively arrange one group; The upper spring of backing plate (22) the fixedly quantity of projection (22b) is three, wherein two change into spring fixedly projection (22b) be positioned at the inner side of longitudinal junction plate (12), another is positioned at the outside of longitudinal junction plate (12).
Priority Applications (1)
| 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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| 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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| CN103966951A true CN103966951A (en) | 2014-08-06 |
| CN103966951B CN103966951B (en) | 2015-12-30 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568839A (en) * | 2015-12-17 | 2016-05-11 | 中铁第四勘察设计院集团有限公司 | Two-line rail girder of maglev rail-holding rail transit |
| CN105568838A (en) * | 2015-12-17 | 2016-05-11 | 中铁第四勘察设计院集团有限公司 | Two-line rail girder of maglev rail-holding rail transit |
| CN109024107A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | Medium-and low-speed maglev track girder big displacement telescopic device |
| CN109024105A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | The hinged horizontal mobile device of medium-and low-speed maglev bridge big displacement telescopic device |
| CN109024106A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | The stringer carriage of medium-and low-speed maglev bridge big displacement telescopic device |
| 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 |
| CN113322725A (en) * | 2021-05-21 | 2021-08-31 | 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 |
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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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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568839A (en) * | 2015-12-17 | 2016-05-11 | 中铁第四勘察设计院集团有限公司 | Two-line rail girder of maglev rail-holding rail transit |
| CN105568838A (en) * | 2015-12-17 | 2016-05-11 | 中铁第四勘察设计院集团有限公司 | Two-line rail girder of maglev rail-holding rail transit |
| CN109024107A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | Medium-and low-speed maglev track girder big displacement telescopic device |
| CN109024105A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | The hinged horizontal mobile device of medium-and low-speed maglev bridge big displacement telescopic device |
| CN109024106A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | The stringer carriage of medium-and low-speed maglev bridge big displacement telescopic device |
| 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 |
| 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 |
| 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 |
| 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 |
| CN113322725A (en) * | 2021-05-21 | 2021-08-31 | 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 |
| 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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