JPH0959904A - Vehicle wheel road joint structure - Google Patents

Abstract

(57) An object of the present invention is to provide a vehicle wheel running road joint structure having a simple structure and capable of preventing damage due to impact of a concrete running road end face facing a play space. SOLUTION: A sloped portion 1b is provided on each of opposite end surfaces of a concrete wheel running path 1 that is opposed to each other with a play space 2 interposed therebetween, and a buffer having a hardness higher than that of concrete is straddled across the play space 2 across the respective sloped parts. The material was mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wheel running road joint structure for a linear railway or the like.

[0002]

2. Description of the Related Art In general, a joint between bridge girders is provided with a clearance b between end faces a _{1 of} adjacent girders a in order to absorb expansion and contraction of girders due to temperature changes and the like. (See FIG. 14) In the road bridge, when the wheels pass through the play space,
In order to maintain comfortable riding comfort, an expansion joint (not shown) is provided between the girders facing each other with the play gap interposed therebetween to close the play gap.

On the other hand, such measures are essentially unnecessary for railway bridges, but in order to prevent the ballast from spilling from the play space, the play space is only closed with an iron plate or the like. There are many. However, on a linear railway, wheels travel at low speeds, so measures similar to those for road bridges are required. Since the wheels are rubber tires, if the ride comfort is neglected, no countermeasure is required for play, but an iron wheel C is provided next to the wheel F as a countermeasure against abnormal conditions. I have to keep it.

In the figure, e is a side wall of the guideway.
(See Figure 13)

[0005]

When the iron wheels are operated during an abnormality response in the linear railway and the iron wheels travel on a concrete road surface, a large impact is generated in the play area, and the play occurs. As a result of the experiment, it became clear that the end face of the concrete road facing the surface was easily damaged.

It is presumed that iron wheels and concrete are very hard, and if they hit each other directly and instantaneously, a large impact is generated, and the concrete is likely to be damaged. The present invention has been proposed in view of such circumstances, and an object of the present invention is to provide a vehicle with a simple structure capable of preventing the concrete traveling road end surface facing the play space from being damaged by the impact of traveling wheels. The point is to provide a wheel road joint structure.

[0007]

In order to achieve the above-mentioned object, a vehicle wheel traveling path joining structure according to the present invention is provided with inclined surfaces on opposing end surfaces of concrete wheel traveling paths which face each other with a play therebetween. A cushioning material is mounted on the inclined surfaces across the play space. According to a second aspect of the present invention, an inclined surface is provided on each of the opposite end surfaces of the pair of wheel traveling paths, and the short gap is provided between the inclined members by a cushioning member mounted across the gap. The vertical member is vertically movable.

According to a third aspect of the present invention, lateral pressing members are respectively provided on both side surfaces facing each other at right angles to the traveling path with a play between the upper end opposite ends of the pair of wheel traveling paths on which the cushioning material is mounted being sandwiched. It is configured to be installed. According to the invention of claim 4, a reinforcing rigid material formed of a magnetically insensitive material is mounted across the play space.

According to a fifth aspect of the present invention, the space between the reinforcing rigid members is filled with a pressure resistant filler. The invention of claim 6 is configured by arranging reinforcing ribs in a row in the passing direction of the vehicle. As described above, the present invention does not finish the upper surfaces of the end portions of the concrete-made wheel traveling paths that face each other across the play space at a right angle, and provides inclined surfaces respectively, straddling the play spaces across the respective inclined surfaces. Since the cushioning material that is softer than the hardness of the concrete is installed, the impact of the wheels on each of the traveling paths will gradually change as the wheels move along the traveling paths, and the impact on the concrete will also change. Will be alleviated.

Further, since the vertical wheel load is applied to the concrete surface via the cushioning material, the load is dispersed and acts until it reaches the concrete surface, and per unit area of the concrete surface. The load of becomes small. According to the second aspect of the present invention, the short vertical member is removably fitted into the play from the cushioning material fitted to each inclined surface of the facing end surface of the wheel traveling path.
When the drive wheel once stops on the joint of the wheel traveling path and then tries to start again, the drive wheel causes the joint to exert a force to kick it up.

Since this force is transmitted to the end surface of the supporting wheel traveling path through the vertical member, the joint itself does not fall off, the supporting wheel traveling path end surface is not destroyed, and the required function is achieved. Maintained. (Refer to FIG. 2) According to the invention of claim 3, lateral displacement of the wheel traveling path is prevented by the lateral pressing members mounted on the opposite side surfaces of the pair of wheel traveling paths facing each other with a play therebetween. (Refer to FIG. 6) According to the invention of claim 4, since the reinforcing rigid material is mounted so as to straddle the play space, when the wheel rides directly on the joining process, the strain of the reinforcing rigid material is distorted. The amount is smaller than when the soft cushioning material is mounted. Further, since the stiffening material for reinforcement is composed of a magnetically insensitive material, it can be used as an expansion joint for a track of a magnetically levitated linear motor car.

According to the fifth aspect of the present invention, since the pressure-resistant filling material such as concrete is filled in the space of the reinforcing rigid material, the compression stress resistance of the expansion joint for play is increased. According to the invention of claim 6, the ribs are provided in the passage direction of the vehicle, whereby the strength and rigidity of the wheel traveling path are increased.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the illustrated embodiments. Reference numeral 1 is a concrete wheel traveling path which faces each other with a play space 2 interposed therebetween, and a horizontal plane 1 is provided at an opposite end of each traveling path 1.
The a and the inclined surface 1b were removed, and a cushioning material 3 which was softer than concrete, such as hard urethane rubber, was attached to the opposing cutouts of the traveling path so as to fill the cutouts.
(See FIG. 1) In the figure, 4 is a girder in which the concrete wheel running path 1 is mounted on the girder upper surface 4a, and 4b is an end face of the girder facing the play space 2.

Since the illustrated embodiment is constructed as described above, as the wheel 5 moves along the upper surface of the concrete wheel running path 1, the wheel 5 is fitted on the horizontal surface 1a and the inclined surface 1b. By the shock absorbing material 3 made of hard urethane rubber which is softer than the hardness of concrete, the impact of the wheel 5 on the concrete wheel traveling path 1 gradually changes, and the impact on the traveling path 1 is also alleviated. Further, since the load of the wheel 5 in the vertical direction is applied to the concrete surface via the cushioning material 3, the load is dispersed and acts before reaching the same surface, and the load per unit area of the concrete surface is It will be small.

In the embodiment shown in FIG. 2, a short vertical member 7 is removably fitted in the play space 2 from the cushioning material 3, and the drive wheel 5'is once set in the wheel traveling path 1, 1. When the vehicle is to be started again after stopping on the joint, the drive wheel 5'applies a force to kick it up to the joint. Since this force is transmitted to the end surface of the wheel traveling path 1 via the vertical member 7, the required function is maintained without the joint itself falling off and the end surface of the wheel traveling path being destroyed.

FIG. 3 shows another embodiment of the present invention, in which an inclined surface 1b and a horizontal surface 1a are cut away from opposite end surfaces of the facing concrete wheel running path 1 with a play space 2 interposed therebetween, and the facing concrete A case where a cushioning material 3 made of only a hard urethane rubber is fitted over the notched portion between the wheel traveling paths 1 and 1 is shown. In addition, as shown in the embodiment of FIG. 4, the cushioning material 3 made of hard urethane rubber is fitted between the cutouts that face each other with a play between the concrete wheel running paths 1 and 1 facing each other. The steel plate 6 with the rib 6a may be integrally molded.

Next, an embodiment of the wheel traveling road joint structure will be described. A load test was conducted using a model of a support wheel running path of full size (however, the width is 460 mm) through a jig simulating an iron wheel having a width of 20 mm. Since the capacity of the testing machine is limited, the maximum load was set to 10 tf.
As a result, if no countermeasure is taken, 2 tf as shown in FIG.
Then, the end face of the concrete running path 1 facing the play space 2 was destroyed as shown by 1x.

Next, when the hard urethane rubber cushioning material 3 is used, both with and without the steel plate 6 on the upper surface are 10 t.
Even with the applied load of f, the starting point of the inclined portion 1b of the concrete traveling path 1 was not destroyed, and the one having the steel plate 6 caused shear fracture at the end of the horizontal portion 1a (the traveling road end surface). It is considered that this destruction is due to the influence of the rib 6a provided on the steel plate 6. (See FIG. 12) As a result of the above test, it was proved that the end surface of the concrete traveling path 1 was easily broken at a right angle.
Those without a horizontal portion are preferable.

FIG. 5 shows this improved joint structure. The cutout portion provided on the end face of the concrete running path 1 facing the play space 2 is composed only of the inclined portion 1b, and the horizontal portion is omitted. . FIG. 6 shows another embodiment of the present invention, in which a short vertical rod 7 which is vertically installed from a buffer portion facing the clearance 2 of the concrete wheel running paths 1, 1 and which penetrates the clearance 2 is fitted. It is removably loosely inserted, and lateral pressers 9 are disposed on the left and right sides of the opposed end surfaces of the two wheel traveling paths 1, 1 and are joined by bolts 10 to prevent lateral displacement of the joint.

At this time, one of the mounting holes 11 of the bolt 10 is a long hole so that the mounting position can be finely adjusted. 7 to 9 show still another embodiment of the present invention, in which the expansion joint for play is embedded between the running paths of the end portions of the floor plate and has an elastic action for expansion and contraction of the girder. This play space expansion joint has, as the reinforcing rigid member 101, a top plate reinforcement member 110 bridged above the play space and a side plate reinforcement member 111 for fixing to a floor plate end portion. In this embodiment, as a material for the stiffening member 101 for reinforcement, a SUS steel plate (SUS) is used.
304) was used. Then, the top plate reinforcing member 110 and both side plate reinforcing members 111 are connected by chloroprene rubber 102.

The side plate reinforcing member 111 is formed by welding an upper first reinforcing member 112 having a substantially horizontal J-shaped cross section and a lower second reinforcing member 113 having a substantially V-shaped cross section. A chloroprene rubber 102 is integrally molded around the first and second reinforcing members. The angle θ of the cross section of the vicinity 104 of both ends of the chloroprene rubber 102 in the passing direction of a vehicle or the like is set to be smaller than a right angle.

Further, in this embodiment, the thickness of the top plate reinforcing member 110 is set thicker than the conventional one, and the section modulus is increased by increasing the lap area of the top plate reinforcing member 110 and the side plate reinforcing member 111. It reduces the compressive strain when a load is applied. Further, as shown in FIG. 9, the SUS steel plate (SU
The plurality of reinforcing ribs 105 formed by S304) are provided by welding to improve the compressive stress resistance of the side plate reinforcing member 111.

The expansion joint for play is installed on the end portion of the floor plate by fixing it to the post-cast concrete by a known method using the anchor bolt 106 or the like. According to the above-described embodiment, since the angle θ of the cross section of the vicinity 104 of both ends in the passing direction of the vehicle is set to be smaller than the right angle, the corner portion 107 of the concrete of the runway joined to the expansion joint for play is right angle. With a larger angle, the load on the corner 107 of the concrete of the runway is dispersed. Therefore, even if the load of the passing vehicle is applied, there is an advantage that the corner portion 107 of the concrete of the runway that is joined to the play expansion joint is less likely to be damaged.

FIG. 10 shows another embodiment of the present invention, in which the play expansion joint is formed for play of a support wheel running path in a magnetic levitation railway (linear motor car). The difference from the embodiment will be mainly described. FIG.
As shown in FIG. 0, the expansion joint for play of this embodiment is
Similar to the embodiment, the reinforcing rigid member 101 made of SUS steel plate (SUS304) is provided. Conventionally, the stiffening material for reinforcement was made of iron (SS400), so it could not be applied to a magnetic levitation type linear motor car. However, in this embodiment, since it is made of a SUS steel plate which is a magnetically insensitive material, it can be used also as an expansion joint for play of a track of a linear motor car. In addition to SUS steel plates, engineering plastic materials such as fiber reinforced plastic (FRP) can be used.

In the above-described embodiment, the side plate reinforcing member 111 is provided with a plurality of reinforcing ribs 105 in the passing direction of a vehicle or the like, but in the present embodiment, instead of providing the reinforcing ribs, a reinforcing rigid member is used. A space between 101 is filled with a pressure-resistant filling material 108 such as concrete or synthetic resin at the time of construction to improve the compression stress resistance of the side plate reinforcing material 111. Conventional expansion joints for play generally have a maximum wheel load of 16k
It could not bear a high load of gf / cm ² or more, especially a concentrated high load such as a train wheel. However, in the case of the present embodiment, the maximum wheel load is 4,300 kgf / c like the aluminum auxiliary wheel of the linear motor car (the wheel that urgently lands and holds the vehicle body when the supporting wheel tire is punctured).
It can withstand repeated loads up to m ² .

As described above, this embodiment is extremely excellent in compressive stress resistance, so that it has an extremely great advantage that it can be applied to the clearance between the support wheel running paths in the magnetic levitation railway.

[0027]

As described above, in the vehicle wheel running road joint structure according to the present invention, the cushioning material is provided over the inclined surfaces provided on the facing surfaces of the concrete wheel running paths which face each other with a play between them. By mounting, when the vehicle travels on the traveling path, the shock to the concrete traveling path due to the traveling wheels gradually changes due to the cushioning material that is softer than the hardness of concrete, so that the impact on the concrete is also mitigated. . In addition, the vertical wheel load acts by dispersing the load through the cushioning material, the load per unit area of the concrete surface becomes small, and the end of the concrete wheel running path facing the play space becomes small. Defects are prevented. The present invention can be applied not only to iron wheels but also to road bridges on which rubber tire wheels run, and has a simpler structure, is more economical, and is easier to construct than conventional joint structures.

According to a second aspect of the present invention, a short vertical member is loosely fitted between the upper cushioning members provided on the opposite end faces of the pair of wheel traveling paths so that the drive wheel once becomes the pair of wheels. When the vehicle tries to start again after stopping on the joint on the traveling path, the drive wheels exert a force on the joint to try to lift it up, and this force travels through the vertical member to the supporting wheels. Since it is transmitted to the road end surface, the joint itself does not fall off, and the required function is maintained without destroying the support wheel traveling road end surface.

According to a third aspect of the present invention, lateral pressing members are mounted on both side surfaces of the pair of wheel running paths that face each other at right angles to the running path, with a gap between the upper end opposite ends on which cushioning materials are mounted being mounted. Therefore, the lateral displacement of the joint is prevented. According to the invention of claim 4, since the reinforcing rigid material is mounted so as to straddle the play gap, it is possible to prevent the corner portion of the concrete joined to the play joint from being missing, and the reinforcing rigid material is a magnetic insensitive material. Since it is composed of the above, it can be applied as an expansion joint for tracks of a linear motor car.

According to the invention of claim 5, the pressure resistant filling material is filled in the space of the reinforcing rigid material, so that the compressive stress resistance of the play expansion joint is increased. In the invention of claim 6, the wheel traveling path is reinforced and stiffened by arranging the ribs in a row along the passage direction of the vehicle.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a vehicle wheel road joint structure according to the present invention.

FIG. 2 is an explanatory view of the operation of the present invention.

FIG. 3 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 4 is a vertical sectional side view showing another embodiment of the present invention.

FIG. 5 is a longitudinal sectional side view showing another embodiment of the present invention.

FIG. 6 is a side view showing still another embodiment of the present invention.

FIG. 7 is a sectional view showing a usage state of still another embodiment of the present invention.

8 is a sectional view of the play expansion joint of FIG. 7. FIG.

9 is a plan view of the play expansion joint of FIG. 7. FIG.

FIG. 10 is a sectional view showing a usage state of still another embodiment of the present invention.

FIG. 11 is a side view showing a test example of a conventional wheel running path joining structure.

FIG. 12 is a longitudinal sectional side view showing another test example of the conventional wheel running path joining structure.

FIG. 13 is a front view of a conventional structure.

FIG. 14 is a view taken along the line EE in FIG.

[Explanation of symbols]

 1 Concrete wheel running path 1a Horizontal part 1b Sloping part 1x Breaking part 2 Free space 3 Buffer material 4 Girder 4a Girder upper surface 4b Girder end face 5 Wheel 6 Steel plate 6a Rib 7 Vertical rod 8 Locking part 9 Side presser 10 Bolt 11 Mounting hole 101 Reinforcing Rigid Material 102 Chloroprene Rubber 104 Near Ends 105 Reinforcing Ribs 106 Anchor Bolts 107 Corners 108 Pressure Resistant Filling Material 110 Top Reinforcing Materials 111 Side Reinforcing Materials 112 First Reinforcing Materials 113 Second Reinforcing Materials

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000111085 Nitta Co., Ltd. 1-8-12 Honmachi, Chuo-ku, Osaka-shi, Osaka (72) Inventor Gohachi Tsuruta 1-10-14 Kitaeno, Taito-ku, Tokyo Japan Railway Construction Corporation Kanto Branch (72) Inventor Mineo Oishi, 1-4-1, Mei Station, Nakamura-ku, Aichi Prefecture, Nagoya City Tokai Passenger Railway Co., Ltd. (72) Inventor Yuji 49, Kunibunji, Kokubunji, Tokyo 2 8-chome 38, Railway Technical Research Institute (72) Inventor Minoru Hamada 5-15-15 Ginza, Chuo-ku, Tokyo Kowa Kasei Co., Ltd. (72) Inventor Masahiro Arita 172 Ikezawa, Yamatokoriyama, Nara Address Nitta Co., Ltd. Nara factory

Claims (6)

[Claims] 1. A sloped surface is provided on each of the opposing end surfaces of a concrete wheel running path that faces each other across the play space, and a cushioning material is mounted across the play space across the play space. A structure for joining the vehicle wheel running paths. 2. A short vertical member can be freely inserted into and removed from a buffer member mounted on the opposite end surfaces of the pair of wheel traveling paths, the inclined surfaces being provided so as to straddle the spaces between the inclined surfaces. The wheel running road joint structure for a vehicle according to claim 1, which is fitted into the vehicle. 3. A lateral pressing member is attached to each of both side surfaces of the pair of wheel running paths that face each other at right angles to the running path, with a free space between upper end opposite ends of the pair of wheel running paths mounted with a cushioning material interposed therebetween. The vehicle wheel road joint structure of the vehicle described. 4. The vehicle wheel running road joint structure according to claim 1, wherein a reinforcing rigid material formed of a magnetically insensitive material is mounted across the play space. 5. The vehicle wheel traveling path joining structure according to claim 4, wherein a pressure-resistant filling material is filled in a space between the reinforcing rigid materials. 6. The vehicle wheel running road joint structure according to claim 1, wherein reinforcing ribs are arranged in a row in a vehicle passage direction.