CN103966928B - A kind of medium-and low-speed maglev system track F rail joint design - Google Patents
A kind of medium-and low-speed maglev system track F rail joint design Download PDFInfo
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- CN103966928B CN103966928B CN201410204326.6A CN201410204326A CN103966928B CN 103966928 B CN103966928 B CN 103966928B CN 201410204326 A CN201410204326 A CN 201410204326A CN 103966928 B CN103966928 B CN 103966928B
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Abstract
A kind of medium-and low-speed maglev system track F rail joint design, to improve the torsional rigidity of F rail joint and anti-discrepancy in elevation misalignment capability, and improves the installation accuracy of track.Inside bottom, the outside side wall of adjacent two sections of F rail link wing rails offer the interior guide and limit groove of longitudinal extension, outer guide and limit groove respectively, and the openend of U-shaped junction plate embeds in interior guide and limit groove, outer guide and limit groove; On U-shaped junction plate longitudinally, lateral separation is laid with long slot bore, the bolt connection assembly through long slot bore makes U-shaped junction plate and adjacent two sections of F rails be formed to removably connect.
Description
Technical field
The present invention relates to medium-and low-speed maglev Rail Transit System, particularly a kind of medium-and low-speed maglev system track F rail joint design.
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 (track) 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, F rail irregularity 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.
Domestic and international multiple mechanism all expands the design and researchp of F rail jointing, with Japan and Chinese research mechanism in the majority, Japan Patent JP04-153401, JP2003-184006, US Patent No. 5199674A, Chinese patent CN200710094043.0, CN201210541691.7, CN201220135832.0 etc. openly propose the joint of multiple different types.
Japan Patent JP04-153401 and US Patent No. 5199674 disclosed a kind of F rail joint design that can be connected switch area track and track with small-radius curve in 1992 with 1993 respectively, devise a secondary F rail and the relatively independent linked vector graph of two main F rails, and certain corner can be maintained between major-minor F rail, connect to realize curve track.This patent structure at home and abroad medium-and low-speed maglev test wire has application with runing on line.
Japan Patent JP2003-184006 disclosed a kind of modified node method to patent JP04-153401 in 2003, be mainly used in the connection of curve track, adopt " well " Zee bar steel Z sleeper and 2 secondary F rail syndetons to adapt to larger rail telescopic amount and curve track coupling stiffness.The application of this patent structure is also more extensive.
Chinese patent CN200710094043.0 disclosed a kind of F rail joint design of circular arc end face in 2009, devise circular arc face type concave inlaid face, to adapt to by the low speed magnetic floating system of action-oriented form at two sections of F rail end faces.This patent structure also can realize the elongation adjustment that track switch turns to.Chinese patent CN201220135832.0 disclosed a kind of rail joint structure of the centering auxiliary connection be made up of boss, groove in 2012, main F rail and secondary F rail adopt 4 screws to realize being connected by connecting hole and link slot.This structure is provided with the auxiliary connection that automatically resets be made up of reset hole in major-minor F rail junction, utilize coordinating of elasticity reset device and reset hole, realize the self-return of F rail.
Chinese patent CN201210541691.7 disclosed a kind of boss and groove auxiliary connection jointing in 2013, secondary F rail devises interior pole abdomen groove and outer pole abdomen groove, main F rail devises interior pole abdomen boss, outer pole abdomen boss, and realized the adjustment of temperature difference stroke by the link slot on groove.
Joint design described above, all can meet the connection request of medium-and low-speed maglev track in theory, but still there is the situation of joint bonding strength, torsional rigidity and restraining ability deficiency, easily cause the decline of track overall precision, affect vehicle operating, increase the cost of operation maintenance.
At home existing dropped into actual tests line or operation line track jointing in, be used in the joint design on rectilinear orbit, i.e. existing JI type joint design (as shown in Figure 1).In operation process, once there is the situation that the vertical irregularity of F rail (discrepancy in elevation) exceeds standard in this structure place, cause its straight line motor induction coil and tablet gap too small, there is the collision of induction coil and tablet; Vehicle, at non-suspended state, when utilizing emergent support wheel to move ahead, whenever support wheel rolls through rail gap, all will bear larger rail gap and impact, large on Vehicular vibration impact.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of medium-and low-speed maglev system track F rail joint design, to improve the torsional rigidity of F rail joint and anti-discrepancy in elevation misalignment capability, and improves the installation accuracy of track.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of medium-and low-speed maglev system track F rail joint design of the present invention, its adjacent two sections of F rails have outer leg, interior leg and wing rail, it is characterized in that: inside bottom, the outside side wall of described adjacent two sections of F rail link wing rails offer the interior guide and limit groove of longitudinal extension, outer guide and limit groove respectively, the openend of U-shaped junction plate embeds in interior guide and limit groove, outer guide and limit groove; On U-shaped junction plate longitudinally, lateral separation is laid with long slot bore, the bolt connection assembly through long slot bore makes U-shaped junction plate and adjacent two sections of F rails be formed to removably connect.
The sidewall of the outer leg of described adjacent two sections of F rail links offers respectively flat key groove, the dovetail groove of longitudinal extension, one end of dovetail key is inserted in the dovetail groove on one section of F rail, and the other end is then fixedly connected in the flat key groove of another section of F rail.
The invention has the beneficial effects as follows, have effectively achieved the connection between adjacent two F rails, strengthen the horizontal centring property of adjacent two sections of F rails, improve the torsional rigidity of F rail joint and anti-discrepancy in elevation misalignment capability, ensure that the rigidity of F rail joint, intensity and reliability, entirety improves the installation accuracy of track; The longitudinal extension distortion that F rail causes because of the temperature difference can be released, the change of single 0 ~ 30mm rail gap stroke on straightway track can be adapted to; Dovetail key and dovetail groove coordinating on the outer leg of F rail, effectively strengthen the horizontal centring property of the adjacent two sections of F rails in F rail joint and second segment F rail and vertical elevation difference limit ability; Structure is simple, be convenient to install and processing, and is easy to safeguard, greatly can improve the section of track and lay efficiency, reduce investment and operation maintenance cost.
Accompanying drawing explanation
This manual comprises following six width accompanying drawings:
Fig. 1 is the schematic diagram of existing medium-and low-speed maglev system track F rail joint design;
Fig. 2 is the three-dimensional exploded view of medium-and low-speed maglev system track F rail joint design of the present invention;
Fig. 3 is the stereogram of junction plate in medium-and low-speed maglev system track F rail joint design of the present invention;
Fig. 4 is the outer side view of medium-and low-speed maglev system track F rail joint design of the present invention;
Fig. 5 is the stereogram of medium-and low-speed maglev system track F rail joint design of the present invention;
Fig. 6 is the stereogram of medium-and low-speed maglev system track F rail joint design of the present invention.
Component name shown in figure and corresponding mark: F rail 10, outer leg 101, interior leg 102, wing rail 103, flat key groove 11, dovetail groove 12, interior guide and limit groove 13, outer guide and limit groove 14, U-shaped junction plate 20, long slot bore 21, L-type pressing plate 22, dovetail key 30.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 2 and Fig. 5, a kind of medium-and low-speed maglev system track F rail joint design of the present invention, its adjacent two sections of F rails 10 have outer leg 101, interior leg 102 and wing rail 103.With reference to Fig. 5, inside bottom, the outside side wall of described adjacent two sections of F rail 10 link wing rails 103 offer the interior guide and limit groove 13 of longitudinal extension, outer guide and limit groove 14 respectively, and the openend of U-shaped junction plate 20 embeds in interior guide and limit groove 13, outer guide and limit groove 14.Interior guide and limit groove 13, outer guide and limit groove 14 match with the openend of U-shaped junction plate 20, add the contact area of wide-u-shaped junction plate 20 and wing rail 103 on the one hand, strengthen the horizontal centring property of two sections of F rails 10 on the other hand, and the torsional rigidity of effective reinforced joint and anti-discrepancy in elevation misalignment capability.
With reference to Fig. 3, on U-shaped junction plate 20 longitudinally, lateral separation is laid with long slot bore 21, bolt connection assembly through long slot bore 21 makes U-shaped junction plate 20 and adjacent two sections of F rails 10 formation removably connect, F rail 10 and bolt connection assembly lengthwise movement in the lump can be realized, the longitudinal extension distortion that release F rail causes because of the temperature difference by long slot bore 21.As the typical configuration mode of one, the quantity of described long slot bore 21 is 4, and longitudinally, lateral separation respectively lays 2.With reference to Fig. 2, for enlarge active surface, dispersion bolt connection assembly is to the Bonding pressure of U-shaped junction plate 20 and F rail 10, and be arranged with two reverse L-type pressing plates 22 at U-shaped junction plate 20, each L-type pressing plate 22 configures 3 groups of bolt connection assemblies and is connected with one section of F rail 10.Bolt connection assembly generally includes hexagon socket cap head screw, plain washer, spring washer.The wing rail 103 of each section of F rail 10 link processes three screwed holes, three L-shaped layouts of screwed hole, and the horizontal spacing of screwed hole should be greater than maglev vehicle meets an urgent need the horizontal stop gap that the width of support wheel and vehicle allow, roll through screwed hole to avoid support wheel.
For ensureing vertical high residual quantity and the horizontal centering amount of two sections of F rails 10, with reference to Fig. 2 and Fig. 4, Fig. 5, the sidewall of the outer leg 101 of described adjacent two sections of F rail 10 links offers respectively flat key groove 11, the dovetail groove 12 of longitudinal extension, one end of dovetail key 30 is inserted in the dovetail groove 12 on one section of F rail 10, and the other end is then fixedly connected in the flat key groove 11 of another section of F rail 10.Flat key groove 11 longitudinal direction length should be advisable close to the difference of dovetail key 30 length and reserved rail gap length, to coordinate the installation of dovetail key 30.Dovetail key 30 first first embeds in the flat key groove 11 of first paragraph F rail 10, until the vertical discrepancy in elevation of two sections of F rails 10 and horizontal centering measure regulate appropriate after, dovetail key 30 is pushed in the dovetail groove 12 of second segment F rail 10, reserve appropriate clearance, with welding material, dovetail key 30 one end and flat key groove 11 are welded and fixed again, thus dovetail key 30 with second segment F rail 10 together longitudinal extension, and can discharge longitudinal free-extension of first paragraph F rail 10.Dovetail key 30 can apply the F rail vertical relative motion restraint larger compared with flat key, can also limit the horizontal relative motion of two sections of F rails 10 simultaneously.
For significantly reducing impact shock when emergency vehicle support wheel scrolls through rail gap, and can adapt to the free-extension of two sections of F rail 10 longitudinal directions, the longitudinal terminal surface of described adjacent two sections of F rail 10 links is the face, oblique angle or right-angle folding face of matching.With reference to Fig. 5, when support wheel scrolls through this rail gap, the change of support wheel and wing rail 103 contact plane is gradual change, increases gradually, can reduce support wheel contact surface largely and to suddenly change the impact shock caused, and effectively reduces vibration when support wheel crosses rail gap.When there is transverse movement bigger than normal for vehicle suspension frame entirety, the gradual effect of the contact surface of this transition structure to emergent support wheel is still effective.With reference to Fig. 6, when support wheel scrolls through this rail gap at design attitude (suspension rack does not produce the situation of lateral shift), first first paragraph F rail 10 and half roller contact, and bear its rolling and move ahead; Treat that wheel rolls across rail gap, namely can bear second half wheel by second segment F rail 10 to move ahead, thus when making support wheel cross rail gap, the impingement area of support wheel only has half support wheel width, alleviate the situation of the contact surface sudden change that support wheel faces at rail gap place, the impact shock that support wheel bears can be reduced.The transverse movement amount allowed when suspension rack is less than support wheel width one half, and the mentality of designing of this rail gap transition structure is all effective, and only the support wheel area that bears of two sections of right angle changeover portions is different, is also to alleviate the impact that existing parallel seams causes.
Some principles of the above a kind of medium-and low-speed maglev system track F of the present invention rail joint design 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. a medium-and low-speed maglev system track F rail joint design, its adjacent two sections of F rails (10) have outer leg (101), interior leg (102) and wing rail (103), it is characterized in that: the inside bottom of described adjacent two sections of F rails (10) link wing rail (103), outside side wall offer interior guide and limit groove (13), the outer guide and limit groove (14) of longitudinal extension respectively, the openend of U-shaped junction plate (20) embeds in interior guide and limit groove (13), outer guide and limit groove (14); On U-shaped junction plate (20) longitudinally, lateral separation is laid with long slot bore (21), the bolt connection assembly through long slot bore (21) makes U-shaped junction plate (20) and adjacent two sections of F rails (10) formed removably connect.
2. a kind of medium-and low-speed maglev system track F rail joint design as claimed in claim 1, it is characterized in that: the flat key groove (11), the dovetail groove (12) that the sidewall of the outer leg (101) of described adjacent two sections of F rail (10) links offer respectively longitudinal extension, one end of dovetail key (30) is inserted in the dovetail groove (12) on one section of F rail (10), and the other end is then fixedly connected in the flat key groove (11) of another section of F rail (10).
3. a kind of medium-and low-speed maglev system track F rail joint design as claimed in claim 1, is characterized in that: the quantity of described long slot bore (21) is 4, and longitudinally, lateral separation respectively lays 2.
4. a kind of medium-and low-speed maglev system track F rail joint design as claimed in claim 3, it is characterized in that: described U-shaped junction plate (20) is arranged with two reverse L-type pressing plates (22), each L-type pressing plate (22) configures 3 groups of bolt connection assemblies and is connected with one section of F rail (10).
5. a kind of medium-and low-speed maglev system track F rail joint design as claimed in claim 1, is characterized in that: the longitudinal terminal surface of described adjacent two sections of F rail (10) links is the face, oblique angle or right-angle folding face of matching.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410204326.6A CN103966928B (en) | 2014-05-14 | 2014-05-14 | A kind of medium-and low-speed maglev system track F rail joint design |
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| CN201410204326.6A CN103966928B (en) | 2014-05-14 | 2014-05-14 | A kind of medium-and low-speed maglev system track F rail joint design |
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| CN103966928A CN103966928A (en) | 2014-08-06 |
| CN103966928B true CN103966928B (en) | 2016-03-16 |
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| CN105625112B (en) * | 2015-12-22 | 2017-08-25 | 中铁第四勘察设计院集团有限公司 | A kind of magnetic suspension traffic engineering rail support structures |
| CN105484114B (en) * | 2015-12-31 | 2018-04-06 | 上海市安装工程集团有限公司 | A kind of line style positioner of the F types section of track |
| CN105625113B (en) * | 2016-03-14 | 2018-01-26 | 中铁第四勘察设计院集团有限公司 | The half oblique slot type jointing for F shaped steel rails |
| CN105603836B (en) * | 2016-03-14 | 2017-12-22 | 中铁第四勘察设计院集团有限公司 | Oblique slot type jointing for F shaped steel rails |
| WO2017157257A1 (en) * | 2016-03-14 | 2017-09-21 | 中铁第四勘察设计院集团有限公司 | Connecting joint for f-shaped steel rail |
| CN105625114B (en) * | 2016-03-14 | 2017-12-15 | 中铁第四勘察设计院集团有限公司 | Buffer-type jointing for F shaped steel rails |
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| CN107740313B (en) * | 2017-10-13 | 2023-09-12 | 北京控股磁悬浮技术发展有限公司 | Track of magnetic levitation train and joint for track |
| CN108547187B (en) * | 2018-06-15 | 2024-06-11 | 湖南磁浮技术研究中心有限公司 | F-shaped rail joint device capable of uniformly adjusting rail joints for magnetic suspension train rail and rail panel |
| CN110055833A (en) * | 2019-04-28 | 2019-07-26 | 中铁二院工程集团有限责任公司 | Medium-and low-speed maglev track structure F rail joint structure |
| CN111347334A (en) * | 2020-04-02 | 2020-06-30 | 中核武汉核电运行技术股份有限公司 | Automatic cleaning device and method for pressure vessel top cover sealing ring groove |
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