JP3546932B2 - Track extension device for floating railway - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a track extension device for traveling on a floating railway vehicle.
[0002]
[Prior art]
A viaduct may be used as a construction technique of a track of a floating railway such as an HSST (urban linear). A viaduct is created by a plurality of piers and a plurality of girders mounted on the piers, and the track rail is supported by a number of sleepers supported by the girders.
[0003]
[Problems to be solved by the invention]
A relatively long girder such as 90 m, 120 m, or 150 m may be used. The girders expand and contract due to temperature changes. In particular, the amount of expansion and contraction increases in steel girders. Specifically, for example, a 150-m steel girder expands and contracts by ± 45 mm under use conditions of 20 ° C. ± 30 °. For this reason, the gap between the girders changes by about 10 cm at the seam of the girders.
[0004]
High-precision railway tracks, such as HSST (Urban Linear), are required to have high construction accuracy. If the distance between joints of track rails becomes longer due to the change in girder, running of floating rail cars will be hindered. Would.
For this reason, even if the change between girders is large, a technique for suppressing the interval between the joints of the track rails is desired.
[0005]
[Object of the invention]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a floating type which can keep the gap between track rail joints short even if the gap between the girders changes greatly due to expansion and contraction of the girders. The aim is to provide railway track extension devices.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a track extending / contracting device for a floating railway according to the present invention employs the following configuration.
A track extension device of a floating railway includes a plurality of girders for traveling by a floating railway vehicle, a plurality of sleepers supported by the plurality of girders, and a track rail supported by the sleepers.
And, within a predetermined section including the joint of the girder, the track rail is provided by being divided into a plurality of pieces in the longitudinal direction,
All the crossties that support the track rails that are provided by dividing into a plurality of sections within the predetermined section including the seam of the girder are slidably supported by the slides with respect to the girder in the longitudinal direction of the track rails. Provided movably,
The track rail provided by dividing into a plurality of sections within the predetermined section including the joint of the girder is connected to all adjacent track rails via connecting means,
The connecting means includes a joint plate provided with a through hole through which a bolt fixed to the track rail penetrates to connect adjacent track rails, and the bolt is displaceably provided in the through hole, and the adjacent The separation distance and the approach distance between the track rails are regulated within a predetermined range.
[0007]
Effect of the Invention
The action of contraction and expansion of one adjacent spar and the other spar will be described. The track rail closest to the joint of one girder will be referred to as a track rail A1 and the track rail closest to the second girder will be referred to as a track rail A2. The track rail will be described as a track rail B1 and the track rail closest to the joint of the other girder as a track rail B2.
[0008]
(Girder shrinkage)
When the temperature decreases and the space between one girder and the other girder increases, first, the space between the track rails A1, B1 near the seam of the girder increases. When the separation distance between the track rails A1 and B1 reaches a predetermined amount, the distance between the track rails A1 and B1 is not separated by a predetermined amount or more by the connecting means.
Furthermore, even if the space between one girder and the other girder is widened, the space between the track rails A1 and B1 is not widened, so that the tie supporting the track rails A1 and B1 slides on the girder by the sliding means. That is, the widening of the interval between one girder and the other girder is absorbed by the railroad ties supporting the track rails A1 and B1 sliding with respect to the girder. At this time, the interval between the track rails A1 and A2 is increased, and the interval between the track rails B1 and B2 is increased.
[0009]
Further, when the distance between one girder and the other girder is increased and the separation distance between the track rails A1 and A2 reaches a predetermined amount, the distance between the track rails A1 and A2 is not separated by a predetermined amount or more by the connecting means.
Further, when the distance between one spar and the other spar is increased, the distance between the track rails A1 and A2 is not widened, so that the sleeper supporting the track rail A2 is slid with respect to the spar by the sliding means. That is, the widening of the interval between one girder and the other girder is absorbed by the sleeper supporting the track rail A2 sliding with respect to the girder.
[0010]
On the other hand, when the distance between the one girder and the other girder is widened and the separation distance between the track rails B1 and B2 reaches a predetermined amount, the space between the track rails B1 and B2 is not separated by a predetermined amount or more by the connecting means.
Further, when the distance between one spar and the other spar is increased, the distance between the track rails B1 and B2 is not increased, so that the sleeper supporting the track rail B2 is slid with respect to the spar by the sliding means. In other words, the widening of the interval between the one girder and the other girder is absorbed by the sleeper supporting the track rail B2 sliding with respect to the girder.
[0011]
(Expansion of digit)
The case where the girder expands in the opposite manner to the above will be described.
When the temperature rises and the space between one girder and the other girder is narrowed, first, the space between the track rails A1, B1 near the seam of the girder is narrowed. When the approach distance between the track rails A1 and B1 reaches a predetermined amount, the distance between the track rails A1 and B1 cannot approach the predetermined amount or more.
Further, even if the space between one spar and the other spar is narrowed, the space between the track rails A1 and B1 is not narrowed, so that the sleeper supporting the track rails A1 and B1 is slid with respect to the spar by the sliding means. . That is, the narrowing of the space between one girder and the other girder is absorbed by the sleeper supporting the track rails A1 and B1 sliding on the girder. At this time, the distance between the track rails A1 and A2 is reduced, and the distance between the track rails B1 and B2 is reduced.
[0012]
Further, when the distance between one girder and the other girder becomes narrower and the approach distance between the track rails A1 and A2 reaches a predetermined amount, the distance between the track rails A1 and A2 cannot approach the predetermined amount or more.
Furthermore, when the distance between one girder and the other girder is reduced, the distance between the track rails A1 and A2 is not reduced, so that the sleeper supporting the track rail A2 is slid with respect to the girder by the sliding means. That is, the narrowing of the interval between one girder and the other girder is absorbed by the sleeper supporting the track rail A2 sliding with respect to the girder.
[0013]
On the other hand, when the distance between one girder and the other girder is reduced and the approach distance between the track rails B1 and B2 reaches a predetermined amount, the connection means cannot close the space between the track rails B1 and B2 by a predetermined amount or more.
Further, when the distance between one girder and the other girder is reduced, the distance between the track rails B1 and B2 is not reduced, so that the sleeper supporting the track rail B2 is slid with respect to the girder by the sliding means. In other words, the narrowing of the space between one girder and the other girder is absorbed by sliding the ties supporting the track rail B2 with respect to the girder.
[0014]
【The invention's effect】
As shown in the above operation, even if the gap between the girders changes greatly due to expansion and contraction of the girders, the change in the gap is caused by each of the track rails divided into a plurality of sections within a predetermined section including the joint of the girders. As a result, the distance between the joints of the track rails can be reduced.
[0015]
In general, the track rail is divided into a plurality of beams in order to suppress the expansion of seams due to thermal expansion and contraction in the existing technology, and the split rail can be implemented by the existing technology.
A connecting means for regulating the separation distance and the approach distance of the track rail to a predetermined amount is also used in the existing technology, and can be used only by adjusting the separation distance and the approach distance.
That is, the present invention can be realized by supporting the sleepers in the predetermined section including the joint of the spar by the sliding means, and adjusting the separation distance and the approach distance by the connecting means.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described based on examples and modifications.
[Configuration of Example]
An embodiment will be described with reference to FIGS. FIG. 1 is an explanatory view of a track extension device of a floating railway at a joint of a girder.
[0017]
A viaduct may be used as an HSST (urban linear) track construction technique. The viaduct is formed by a plurality of piers 1 and a plurality of girders 2 and 3 mounted on the plurality of piers 1. The girders 2 and 3 are steel girders made of iron material. Each girder 2 and 3 is supported by three or more piers 1 and is provided relatively long (for example, 90 m, 120 m, 150 m, etc.). It is.
In this embodiment, an example is shown in which the interval between the joints of the digits 2 and 3 fluctuates by ± 50 mm with respect to the reference interval A due to a temperature change.
[0018]
The track rail 4 of the HSST vehicle is supported in parallel on both ends of a large number of sleepers 5, 5 'supported by the girders 2, 3. The track rail 4 is provided relatively short (for example, about several m to 20 m) in order to suppress the expansion of the seam due to thermal expansion and contraction. In this embodiment, the track rail 4 is 10 m.
Note that the sleeper 5 in a predetermined section including the seams of the girders 2 and 3 (in this embodiment, within a range of ± 20 m from the seam) indicates a slide sleeper that can be slid by slide means 11 described later, and a sleeper other than the predetermined section. 5 'indicates a non-slidable fixed sleeper.
[0019]
Each of the 10 m track rails 4 regulates the separation distance and the approach distance of the adjacent track rails 4 to a predetermined amount by connecting means 6 and 6 ′.
In the connecting means 6 in the predetermined section including the joints of the girders 2 and 3, the control amounts of the separation distance and the approach distance are set to 20 ± 20 mm. The control amount of the approach distance is set to 20 ± 10 mm.
[0020]
The structure of the connecting means 6, 6 'will be described with reference to FIGS.
The connecting means 6, 6 'comprise seam plates 7, 7' for connecting adjacent track rails 4. The joint plates 7 and 7 ′ are provided with through holes 9 through which bolts 8 fixed to the track rails 4 penetrate, and the bolts 8 are displaceably provided in the through holes 9.
[0021]
Specifically, as shown in FIG. 4A, the joint plate 7 used for the connecting means 6 in a predetermined section including the joints of the girders 2 and 3 has 10 mm on both sides of the bolt 8 at the reference position. When there is a gap, when the adjacent track rails 4 are widened, the bolts 8 are pulled to both sides as shown in FIG. 4 (b), and the separation distance between the adjacent track rails 4 is regulated to 40 mm. When the track rail 4 is narrowed, the bolt 8 is pressed inward as shown in FIG. 4C, thereby restricting the approach distance of the adjacent track rail 4 to 0 mm.
Also, as shown in FIG. 5, the joint plate 7 'used for the connecting means 6' other than the predetermined section including the joints of the girders 2 and 3 has a gap of 5 mm on each side of the bolt 8 at the reference position. It is.
[0022]
Each of the 10 m track rails 4 is supported on the girders 2 and 3 via the sleepers 5 and 5 ′, and each of the sleepers 5 and 5 ′ is, as shown in FIG. Is fixed to the track rail 4.
The sleepers 5 of a predetermined interval including a seam digits 2,3, by sliding means 11, movable in the longitudinal direction of the track rail 4, sleepers 5 other than the predetermined section including the seam digit 2,3 'is It is fixed to the beams 2, 3 by well-known support means.
[0023]
The structure of the slide means 11 will be described with reference to FIGS.
As described above, the slide means 11 slidably supports the sleeper 5 with respect to the girders 2 and 3, and the base plate 12 is fixed to the sleeper 5, and the guide plates 13 and An adjustment mortar 14 is fixedly provided, and a hard rubber plate 15 is arranged between the base plate 12 and the guide plate 13.
An anchor bolt 16 is fixedly provided on the beams 2 and 3, and the base plate 12 is slidably pressed by a leaf spring 17 supported by the anchor bolt 16. The anchor bolt 16 is screwed into an anchor plate 18 fixed to the girders 2 and 3, and the amount of screwing sets the amount of pressing of the base plate 12 by the leaf spring 17.
[0024]
When the sliding means 11 applies a force for moving the sleeper 5 to the beams 2 and 3 in the direction of arrow B in FIG. 6 (a) and (b) (corresponding to the longitudinal direction of the track rail 4), the base plate 12 moves along a guide plate 13 having a substantially U-shaped cross section (see FIG. 7 for the shape), and as a result, the sleeper 5 slides in the arrow B direction with respect to the beams 2 and 3.
[0025]
(Operation of the embodiment)
The effect of contraction and expansion of one adjacent spar 2 and the other spar 3 will be described with reference to FIG.
The track rail 4 closest to the joint of one spar 2 will be described as track rail A1 and the track rail 4 closest to the joint of one spar 2 as track rail A2, and the joint of the other spar 3 will be described. And the track rail 4 closest to the other side of the beam 3 as the track rail B2.
[0026]
(Shrinkage of digits 2, 3)
When the temperature decreases and the space between one spar 2 and the other spar 3 widens, first, the space between the track rails A1 and B1 near the seam of the spar 2 and 3 widens. When the separation distance between the track rails A1 and B1 reaches a predetermined amount (40 mm), the distance between the track rails A1 and B1 is not separated by 40 mm or more by the connecting means 6.
Further, even if the space between the one girder 2 and the other girder 3 is widened, the space between the track rails A1 and B1 does not widen more than 40 mm. Slide to 3. In other words, the widening of the space between the one girder 2 and the other girder 3 is absorbed by the sleeper 5 supporting the track rails A1, B1 sliding with respect to the girder 2, 3. At this time, the interval between the track rails A1 and A2 is increased, and the interval between the track rails B1 and B2 is increased.
[0027]
Further, when the distance between the one spar 2 and the other spar 3 is widened and the separation distance between the track rails A1 and A2 reaches a predetermined amount (40 mm), the connecting means 6 causes the distance between the track rails A1 and A2 to be more than 40 mm apart. Disappears.
Further, when the distance between one spar 2 and the other spar 3 is increased, the distance between the track rails A1 and A2 does not increase by 40 mm or more. Slide against it. In other words, the widening of the space between the one girder 2 and the other girder 3 is absorbed by the slide 5 supporting the track rail A2 sliding with respect to the girder 2 or 3.
[0028]
On the other hand, when the distance between one spar 2 and the other spar 3 widens and the separation distance between the track rails B1 and B2 reaches a predetermined amount (40 mm), the connecting means 6 causes the distance between the track rails B1 and B2 to be more than 40 mm apart. Disappears.
Further, when the distance between one spar 2 and the other spar 3 is increased, the distance between the track rails B1 and B2 does not increase by 40 mm or more, so that the sleeper 5 supporting the track rail B2 by the slide means 11 becomes the spar 2,3. Slide against it. In other words, the widening of the space between the one girder 2 and the other girder 3 is absorbed by the slide 5 supporting the track rail B2 sliding with respect to the girder 2 or 3.
[0029]
(Expansion of digits 2, 3)
The case where the girders 2 and 3 expand, contrary to the above, will be described.
When the temperature rises and the space between one spar 2 and the other spar 3 is reduced, the distance between the track rails A1 and B1 near the joint of the spar 2 and 3 is first reduced. When the approach distance between the track rails A1 and B1 reaches a predetermined amount (0 mm), the distance between the track rails A1 and B1 cannot approach 0 mm or more.
Further, even if the distance between one spar 2 and the other spar 3 is reduced, the distance between the track rails A1 and B1 does not become smaller than 0 mm, so that the sliding means 11 supports the sleeper 5 supporting the track rails A1 and B1. Slides with respect to the digits 2 and 3. In other words, the narrowing of the space between the one girder 2 and the other girder 3 is absorbed by the sleeper 5 supporting the track rails A1 and B1 sliding with respect to the girder 2 and 3. At this time, the distance between the track rails A1 and A2 is reduced, and the distance between the track rails B1 and B2 is reduced.
[0030]
Further, when the distance between the one girder 2 and the other girder 3 is reduced and the approach distance between the track rails A1 and A2 reaches a predetermined amount (0 mm), the distance between the track rails A1 and A2 cannot approach 0 mm or more.
Further, when the distance between one spar 2 and the other spar 3 is reduced, the distance between the track rails A1 and A2 is not reduced by more than 0 mm. Slide to 3. In other words, the narrowing of the interval between the one girder 2 and the other girder 3 is absorbed by the sleeper 5 supporting the track rail A2 sliding with respect to the girder 2 or 3.
[0031]
On the other hand, when the distance between the one girder 2 and the other girder 3 is reduced and the approach distance between the track rails B1 and B2 reaches a predetermined amount (0 mm), the connecting means 6 causes the distance between the track rails B1 and B2 to approach 0 mm or more. become unable.
Further, when the distance between one spar 2 and the other spar 3 is reduced, the distance between the track rails B1 and B2 is not reduced by more than 0 mm. Slide to 3. In other words, the narrowing of the space between the one girder 2 and the other girder 3 is absorbed by the sleeper 5 supporting the track rail B2 sliding with respect to the girder 2 or 3.
[0032]
[Effects of the embodiment]
As shown in the above operation, even if the gap between the joints of the girders 2 and 3 greatly changes due to the expansion and contraction of the girders 2 and 3, the change in the gap is determined by the trajectory in the predetermined section including the seam of the girders 2 and 3. Since the distance between the rails 4 is dispersed, the distance between the joints of the track rails 4 can be reduced as a result. In other words, even if the gap between the joints of the girders 2 and 3 greatly changes, the gap between the joints of the track rails 4 can be suppressed short, so that the running of the HSST vehicle is not hindered.
[0033]
The track rail 4 provided at 10 m is used in the existing technology in order to suppress the expansion of the seam due to thermal expansion and contraction, and does not need to be newly manufactured.
Further, a connecting means 6 for regulating the separation distance and the approach distance of the adjacent track rails 4 to a predetermined amount is also used in the existing technology, and is used within a predetermined section including a joint of the girders 2 and 3 (a section for slidingly supporting the sleeper 5). In (2), it can be used only by adjusting the separation distance and the approach distance to 20 ± 20 mm.
In other words, the present invention can be realized by supporting the sleeper 5 with the sliding means 11 and adjusting the separation distance and the approach distance by the connecting means 6 within a predetermined section including the joint of the girders 2 and 3.
[0034]
(Modification)
The numerical values shown in the above embodiments are used for description and can be changed as appropriate. That is, the range of the predetermined section including the joint of the girders 2 and 3 is changed, the length of the separation distance and the approach distance by the connecting means 6 is changed, and the length of the track rail 4 is changed. May be.
The structure of the connecting means 6 is an example for explaining the embodiment, and may be appropriately changed as long as the separation distance and the approach distance between the adjacent track rails 4 are regulated to a predetermined amount within the scope of claim 1. Is also good.
The structure of the slide means 11 is also an example for explaining the embodiment, and may be changed as appropriate, as long as the sleeper 5 is slidably supported on the beams 2 and 3 in the longitudinal direction of the track rail 4. good.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a track extension device of a floating railway at a joint of a girder.
FIG. 2 is a top view of the connecting means.
FIG. 3 is a sectional view and a side view of a connecting means.
FIG. 4 is an explanatory diagram of a seam plate used in a predetermined section including a seam of a girder;
FIG. 5 is an explanatory diagram of a seam plate used in a section other than a predetermined section including a seam of a girder;
FIG. 6 is a top view and a side view of the sliding means.
FIG. 7 is a front view of the sliding means.
[Explanation of symbols]
2 One girder 3 The other girder 4 Track rail 5 Sleeper (slider supported slidably with respect to the girder)
5 'sleepers (ties fixed to girders)
6 Connecting means (connecting means in a predetermined section including a joint of a girder)
6 'connecting means (connecting means outside the predetermined section including the seam of the girder)
11 Slide means

Claims (1)

A plurality of girder for floating railway vehicle traveling, a number of sleepers supported by the plurality of girder, and a track rail supported by this sleeper, in a track expansion and contraction device of a floating railway comprising:
In a predetermined section including the seam of the girder, the track rail is provided by being divided into a plurality in the longitudinal direction,
All the crossties that support the track rails that are provided by dividing into a plurality of sections within the predetermined section including the seam of the girder are slidably supported by the slides with respect to the girder in the longitudinal direction of the track rails. Provided movably,
The track rail provided by dividing into a plurality in a predetermined section including the joint of the girder is connected to all adjacent track rails via connecting means,
The connecting means includes a joint plate provided with a through hole through which a bolt fixed to the track rail penetrates to connect adjacent track rails, and the bolt is displaceably provided in the through hole, and the adjacent A separation distance and an approach distance between adjacent track rails within a predetermined range.

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