JP2862815B2 - Elastic bearing for sleepers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden or concrete sleeper elastic bearing device laid on a gravel roadbed of a railway.

[0002]

2. Description of the Related Art A wooden or concrete sleeper laid on a gravel roadbed absorbs vibrations received by the sleeper by the elasticity of the gravel roadbed. This vibration absorption efficiency is further improved. In order to further reduce the impact transmitted to the gravel roadbed, prevent the pebbles from being pebbled (that is, decrease in elasticity) and generate dust, and extend the maintenance cycle, both ends of the sleeper are supported by elastic bearing boxes. In many cases.

A conventional elastic bearing box has a bottom plate 21, both side plates 22 and an outer end plate 23 rising from the edge of the bottom plate 21, as shown in FIGS. 16 and 17, and is integrally formed of soft rubber. ing. The end of the sleeper 24 to which the rail 20 is fixed by the fixing device 28 is supported by the elastic bearing box 25, and the elastic bearing box 25 is embedded in the gravel roadbed 10. Further, the sleeper 24 and the elastic bearing box 25 are integrally fixed by an adhesive or an anchor bolt (not shown) provided below the sleeper.

FIG. 1 shows an elastic bearing structure for a sleeper using the elastic bearing box 25 made of soft rubber as described above.
As shown in FIG. 6, there is a problem in that the gravel 10a of the gravel roadbed 10 bites into the soft rubber of the elastic bearing box 25 due to aging, and the elastic bearing box 25 is damaged, and the original elastic bearing function is lost. If the elastic bearing box 25 loses its elastic bearing function, the pebbles 10a of the gravel roadbed 10 due to the vibration of the sleepers 24 become more remarkable and the generation of dust becomes more conspicuous. Thus, there is a problem that maintenance work is required in a relatively short cycle, and this maintenance work takes time and effort.

[0005] When the elastic bearing function of the gravel roadbed 10 is deteriorated, the maintenance work is performed by using a child tamping device disclosed in Japanese Patent Application Laid-Open No. 7-119105 to push back the ballast with the clogged gap and to improve the sleeper. This is the operation of re-packing the ballast moved to the side below the sleeper 24 again.

[0006]

As described above, in the conventional elastic bearing box 25 made of soft rubber, since the soft rubber is rich in elasticity, the vibration received from the sleeper 24 is applied to the elastic bearing box 25 by the elastic bearing box 25. By absorbing the vibration, the vibration is not transmitted to the gravel roadbed 10, and it is possible to suppress the pebbles (decrease in elasticity) of the gravel 10a and the generation of dust. However, on the other hand, since the elastic bearing box 25 is made of a single piece of soft rubber, the gravel 10a of the gravel roadbed 10 easily gets into the soft rubber due to aging as shown in FIG. 16, and the elastic bearing box 25 is damaged. At the same time, the original elastic bearing function has been lost and a new elastic bearing box 2
The maintenance work including the replacement with 5, for example, is required in a relatively short cycle, and the maintenance work is generally performed at night, which is troublesome and time-consuming.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the elastic bearing box, improve the drawbacks of the conventional sleeper elastic bearing device, and provide a new elastic bearing device capable of extending the maintenance cycle.

[0008]

In order to achieve the above-mentioned object, an elastic bearing for a sleeper according to the present invention is provided with a bottom plate 1.
And an upper end of the bottom plate 1 of an elastic bearing box main body 5a made of hard rubber, having both side plates 2 standing from the side edge of the bottom plate 1 and an outer end plate 3 standing from the outer edge of the bottom plate 1. An elastic bearing box 5 formed by integrally vulcanizing a load-bearing soft rubber layer 6 with the bottom plate 1 to support a sleeper with the load-bearing soft rubber layer 6; The sleeper is fixed to the elastic bearing box 5 using fixing means.

The sleeper elastic bearing device of the present invention comprises:
An elastic bearing box main body 5a having a bottom plate 1, both side plates 2 rising from a side edge of the bottom plate 1, and an outer end plate 3 rising from an outer edge of the bottom plate 1, and made of hard or non-hard rubber. An elastic bearing in which a plate-like reinforcing hard material 9 is embedded in the bottom plate 1 and a soft rubber layer 6 for load bearing having a predetermined thickness is formed on the upper surface of the bottom plate 1 by integral vulcanization with the bottom plate 1. A box 5 is provided, wherein the sleeper is supported by the soft rubber layer 6, and the sleeper is fixed to the elastic bearing box 5 by using fixing means.

It is preferable that a rib 11 for preventing gravel collapse is provided on the lower surface of the bottom plate 1.

[0011] The fixing means may be any one of bonding between the soft rubber layer 6, both side plates 2 and the outer end plate 3 and the sleeper, or nailing between the both side plates 2 and the sleeper, or
Both are good.

The fixing means comprises a guide hole 7 provided in both side plates 2 and a sleeper movement regulating shaft 8 which is loosely fitted in the guide hole 7 and whose tip is penetrated and fixed to the side surface of the sleeper. May be.

The sleeper is a concrete sleeper 13
a, and the sleeper movement control shaft 8 is
8 and the bolt 18 is connected to the concrete sleeper 13a.
May be screwed into the female screw 15 of the embedding plug 14 provided on the side surface of the plug.

The sleeper is a wooden sleeper 13, and the sleeper movement control shaft 8 is a nail or a screw.
The nail or screw may be driven or screwed into the side of the wooden sleeper 13.

[0015]

According to the present invention, in the gravel roadbed 10, the sleepers are elastically supported by the load-bearing soft rubber layer 6 in the elastic bearing box 25, so that the vibration of the sleepers is applied to the soft rubber layer 6. It is smoothly absorbed and thus the vibration of the elastic bearing box 5 is reduced, and the gravel 10a on the gravel roadbed 10 is reduced.
Of fine stones and dust are suppressed. Moreover, the elastic bearing box 5
Since the bottom plate 1, the side plates 2 and the outer end plate 3 are made of hard rubber, or the plate-like reinforcing hard material 9 is embedded in the bottom plate 1, the gravel 10 a is formed on the bottom plate 1. The soft rubber layer 6 is protected by the bottom plate 1, and the elastic bearing function of the elastic bearing box 5 against the sleepers is maintained for many years.

Further, by providing a rib 11 for preventing gravel collapse on the lower surface of the bottom plate 1, it is possible to prevent the gravel from collapsing, and to further extend the maintenance work cycle of refilling the gravel 10a under the sleeper using a tamping device. it can.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment. In each of the drawings, the sleepers are laid on a gravel roadbed 10, and both ends of a wooden sleeper 13 (only one end is shown in FIGS. 1 to 3).
Are supported by an elastic bearing box 5 buried in a gravel roadbed 10.

The elastic bearing box 5 has a substantially rectangular shape when viewed from a plane, and has a bottom plate 1 and both side plates 2 standing upright from side edges of the bottom plate 1.
And an outer end plate 3 erecting from the outer edge of the bottom plate 1.
And the outer end plate 3 and the elastic bearing box main body 5a are integrally formed of hard rubber (for example, Neo Plus).

Further, a soft rubber layer 6 for supporting a load having a predetermined thickness is integrally provided on the upper surface of the bottom plate 1, and the sleeper 13 is connected to the elastic bearing box 5 via an upper surface opening 16 and an inner end opening 17. It is inserted and supported by the load-bearing soft rubber layer 6.

In order to form the load-bearing soft rubber layer 6 integrally with the bottom plate 1, first, the elastic bearing box main body 5 a composed of the bottom plate 1, both side plates 2, and the outer end plate 3 is made of a hard rubber material. A semi-vulcanization molding is performed, and then a soft rubber material for forming a soft rubber layer 6 is placed on the upper surface of the semi-vulcanized bottom plate 1, and then the elastic bearing box main body 5a and the soft rubber material are molded in a mold. By performing the vulcanization, the elastic bearing box 5 in which the bottom plate 1 and the soft rubber layer 6 for load bearing are integrally vulcanized is formed.

When the elastic bearing box 5 is buried in the gravel roadbed 10, the vibration of the sleeper 13 is smoothly caused by the compression deformation of the soft rubber layer 6, since the soft rubber layer 6 for load bearing is rich in elasticity. The vibration of the elastic bearing box 5 itself is suppressed by being absorbed, and the vibration of the sleeper 13 is thus reduced.
Regardless of the value, the gravel is suppressed and the gravel gap is maintained, so that the gravel roadbed 10 retains the elastic bearing function for a long time and the generation of dust is suppressed. Moreover, since the bottom plate 1 of the elastic bearing box 5 is made of hard rubber, the bottom plate 1 is slightly bent up and down by receiving a load from above, but the gravel 10a does not bite into the bottom plate 1, The elastic bearing box 5 is not damaged,
The soft rubber layer 6 is not damaged.

When the sleeper is a wooden sleeper 13,
As means for fixing the wooden sleeper 13 to the elastic bearing box 5, as shown in FIG. 2, there is a fixing means by nailing using a fixing nail 12 or a fixing means by adhesion using an adhesive 19. In the case of nailing, the nails 30 are passed through the nail holes 30 of both side plates 2 of the elastic bearing box 5 and the fixing nails 12 are driven into the side surfaces of the wooden sleepers 13 so that both are fixed. In the case of bonding, the inner surfaces of the both side plates 2 of the elastic bearing box 5 and the space between the soft rubber layer 6 for load bearing and the wooden sleeper 13a are bonded with an adhesive 19 to fix them.

When the wooden sleeper 13 is fixed to the elastic bearing box 5 by the nailing fixing means or the fixing means by bonding, when the sleeper 13 vibrates up and down, both side plates 2 are made of hard rubber. The two side plates 2 bend and deform as the sleeper 13 moves up and down. In other words, even when the sleeper 13 is fixed to the elastic bearing box 5 due to the deformation of the side plates 2 following the movement of the sleeper 13, the elastic bearing box 5 is damaged by the vertical movement of the sleeper 13. There is no. In addition, it is also possible to use the nailing fixing means and the adhesive fixing means together.

Sleeper is a concrete sleeper 13a
In this case, the nailing fixing means or the adhesive fixing means cannot be used. In this case, the fixing means shown in FIGS. 5 to 7 may be used as the second embodiment. First, an embedding plug (insert) 14 having a female screw 15 is provided on both sides of the end of the concrete sleeper 13a. On the other hand, raised portions 2a are provided on both side plates of the elastic bearing box 5 at positions facing the embedding plugs 14, and the guide holes 7 formed in the raised portions 2a and formed by vertically long holes are used to restrict sleeper movement. A bolt 18 as a specific example of the shaft 8 is loosely fitted, and the screw portion of the bolt 18 is screwed into the female screw 15 of the embedding plug 14. Bolt 1
The vertical gap between the guide hole 8 and the guide hole 7 is substantially the same as the compression margin of the soft rubber layer 6 for supporting the load.

With the above configuration, when the concrete sleeper 13a supported by the load-bearing soft rubber layer 6 applies a load from above, the bolt 18 is loosely fitted into the guide hole 7 so that the bolt is loosely fitted. In the range in which the rail 18 is movable in the vertical direction in the guide hole 7, the sleeper 13a smoothly moves up and down due to the elasticity of the soft rubber layer 6, and the vibration of the rail 20 fixed to the sleeper 13a via the fixing device 28. Is absorbed. Moreover, the range of movement of the sleeper 13a is restricted by the loose fit of the bolt 18 into the guide hole 7,
There is no such a problem that the sleeper 13a moves in the elastic bearing box 5 without permission or escapes from the elastic bearing box 5.

Since the both side plates 2 of the elastic bearing box 5 are made of hard rubber and can be deformed, the guide holes 7 and the bolts 18 are provided.
It is also possible to configure so that there is no gap between them. In this case, as in the case of the nailing fixing means in FIG. 2, the bolt 1 is moved in accordance with the vertical movement of the concrete sleeper 13a.
8, the two side plates 2 bend and deform, and follow the movement of the sleeper 13a.

The wooden sleeper 13 can also be fixed to the elastic bearing box 5 using fixing means with the guide hole 7 and the sleeper movement restricting shaft 8 shown in FIGS. In the case of this wooden sleeper 13, a nail 12 of a predetermined length is loosely fitted in the guide hole 7 in place of the embedding plug 14 and the bolt 18 in the concrete sleeper 13a in FIG. A screw (not shown) is loosely fitted in the guide hole 7 in place of the nail 12 and is screwed into a side surface of the wooden sleeper 13 to movably fix the wooden sleeper 13 to the elastic bearing box 5. You can also.

According to the elastic bearing devices of the first to third embodiments, the vibration of the sleepers 13 and 13a is smoothly absorbed by the load-bearing soft rubber layer 6 in the elastic bearing box 5, and the elastic bearing box 5 itself is used. And the bottom plate 1 is made of hard rubber, so that it is not damaged by the gravel surface.

Next, FIGS. 10 and 11 show an elastic bearing device according to a fourth embodiment. In the fourth embodiment, a plate-like reinforcing hard material 9 is buried inside the thickness of the bottom plate 1 of the elastic bearing box 5. As the reinforcing hard material 9, for example, a steel plate, a reinforced plastic plate, or the like cut to a predetermined size may be used. In the fourth embodiment, the elastic bearing box body 5
a, the both side plates 2 and the outer end plate 3
The same hard rubber as that of the embodiment may be used, or a non-hard rubber may be used. Other configurations are the same as those of the first embodiment.

According to the fourth embodiment, since the bottom plate 1 of the elastic bearing box 5 is reinforced by the reinforcing hard material 9 embedded therein, the elastic bearing box main body 5a including the bottom plate 1 is formed of non-hard rubber. Even when the bottom plate 1 is in contact with the gravel surface, the bottom plate 1 is not damaged by the gravel 10a,
Therefore, the load-bearing soft rubber layer 6 on the upper surface of the bottom plate is not damaged.

FIGS. 12 to 15 show an elastic bearing device according to a fifth embodiment. In the first to fourth embodiments, the lower surface of the bottom plate 1 of the elastic bearing box 5 is flat, but in the fifth embodiment, a ridge shoulder 1a is provided along the periphery of the bottom plate 1 and this bottom plate 1 is provided. Gravel collapsing prevention rib 11 on the lower surface of 1
Is molded. Although the depth and bottom shape of the rib 11 for preventing gravel collapse may be arbitrary, in the embodiment, the rib 11 is used.
Are formed in a lattice shape. Other configurations are the same as those of the first embodiment.

Therefore, according to the fifth embodiment, when the elastic bearing box 5 is buried in the gravel roadbed 10, the gravel 10a is surrounded by the ridge shoulder 1a and the gravel breaking prevention rib 11 as shown in FIG. By entering the area, the gravel 10a does not move, the gravel gap is clogged, and the gravel collapse moving from the lower side of the elastic bearing box 5 to both sides is reduced.
The period of the maintenance work for pushing back the elastic bearing box 5a downward again can be further extended while expanding the gravel gap of Oa.

[0033]

According to the present invention, when the elastic bearing box 5 for supporting the sleeper is embedded in the gravel roadbed 10, the sleeper is elastically supported by the load-bearing soft rubber layer 6 in the elastic bearing box 5. The vibration of the sleeper is smoothly absorbed by the soft rubber layer 6, so that the vibration of the elastic bearing box 5 is reduced.
The vibration of the sleeper is less transmitted to the gravel roadbed 10, so that the gravel on the gravel roadbed 10 (i.e., the decrease in elasticity) and the generation of dust can be suppressed, and the cycle of maintenance work can be extended. . Moreover, the elastic bearing box 5
Since the bottom plate 1, both side plates 2 and the outer end plate 3 constituting hard rubber are made of hard rubber, or the plate-like reinforcing hard material 9 is embedded in the bottom plate 1, the bottom plate 1 is filled with gravel. The soft rubber layer 6 is not damaged by the bottom plate 1 and the elastic bearing box 5
The effect is that the elastic bearing function for the sleeper is maintained for many years.

Further, by providing a rib 11 for preventing gravel collapse on the lower surface of the bottom plate 1, the gravel collapse is prevented, the gap between the gravel is expanded by using a tamping device, and the gravel 1 is placed under the sleeper.
There is an effect that the cycle of the maintenance work for reducing 0a can be further extended.

[Brief description of the drawings]

FIG. 1 is a side view of a sleeper elastic bearing device according to a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partially broken plan view of FIG. 1;

FIG. 4 is a perspective view of an elastic bearing box.

FIG. 5 is a side view showing a fixing means for a concrete sleeper to an elastic bearing box as a second embodiment.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a perspective view of an elastic bearing box.

FIG. 8 is a side view showing a fixing means of a wooden sleeper to an elastic bearing box as a third embodiment.

FIG. 9 is a sectional view taken along the line CC of FIG. 8;

FIG. 10 is a side view of a sleeper elastic bearing device according to a fourth embodiment.

FIG. 11 is a sectional view taken along line DD of FIG. 10;

FIG. 12 is a side view of a sleeper elastic bearing device according to a fifth embodiment.

FIG. 13 is a sectional view taken along line EE of FIG. 12;

FIG. 14 is a sectional view of the sleeper and the elastic bearing box.

FIG. 15 is a bottom view of FIG.

FIG. 16 is a vertical side view of a conventional sleeper elastic bearing device.

FIG. 17 is a sectional view taken along line FF of FIG. 16;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom plate 2 Both side plates 3 Outer end plate 5 Elastic bearing box 6 Soft rubber layer for load bearing 7 Guide hole 8 Sleeper movement regulation shaft 9 Reinforcement hard material 10 Gravel roadbed 10a Gravel 11 Gravel collapse prevention rib 12 Fixing nail 13 Wooden No sleeper 13a Concrete sleeper 14 Embedding plug 15 Female screw 16 Top opening 17 Inner end opening 18 Bolt 19 Adhesive 20 Rail 21 Bottom plate 22 Side plates 23 Outer end plate 24 Sleeper 25 Elastic bearing box 28 Fixing device 30 Nail Hole

Claims (7)

(57) [Claims] An elastic bearing box body made of hard rubber, having a bottom plate, both side plates rising from a side edge of the bottom plate, and an outer end plate rising from an outer edge of the bottom plate. An elastic bearing box 5 having a predetermined thickness of a soft rubber layer 6 for load bearing formed on the upper surface of the bottom plate 1 by integral vulcanization with the bottom plate 1.
And the sleeper is supported by the load-bearing soft rubber layer 6, and the sleeper is fixed to the elastic bearing box 5 using fixing means. 2. A bottom plate 1; both side plates 2 standing upright from side edges of the bottom plate 1; and an outer end plate 3 standing upright from an outer edge of the bottom plate 1, and are formed of hard or non-hard rubber. A plate-shaped reinforcing hard material 9 is embedded in the bottom plate 1 of the elastic bearing box main body 5a, and a load-bearing soft rubber layer 6 having a predetermined thickness is integrally vulcanized with the bottom plate 1 on the upper surface of the bottom plate 1. It is provided with an elastic bearing box 5 formed, the sleeper is supported by the soft rubber layer 6, and the sleeper is fixed by a fixing means.
An elastic bearing for a sleeper, characterized by being fixed to the sleeper. 3. The elastic support device for a sleeper according to claim 1, wherein a rib 11 for preventing gravel collapse is provided on a lower surface of the bottom plate 1. 4. The fixing means for bonding between the soft rubber layer 6, the side plates 2 and the outer end plate 3 and the wooden sleeper 13 or nailing between the both side plates 2 and the sleeper 13 The sleeper elastic bearing device according to any one of claims 1 to 3, which is either one or both. 5. A guide hole 7 provided in both side plates 2 for the fixing means, and a sleeper movement restricting shaft 8 which loosely fits into the guide hole 7 and penetrates and fixes its tip to the side surface of the sleeper.
The elastic bearing device for a sleeper according to any one of claims 1 to 3, comprising: 6. The sleeper according to claim 1, wherein the sleeper is a concrete sleeper.
3a, the sleeper movement restricting shaft 8 is a bolt 18, and the bolt 18 is connected to the concrete sleeper 1
The sleeper elastic bearing device according to claim 5, wherein the sleeper is screwed into a female screw (15) of an embedding plug (14) provided on a side surface of the sleeper (3a). 7. The sleeper is a wooden sleeper 13, the sleeper movement restricting shaft 8 is a nail or a screw, and the nail or the screw is driven or screwed into a side surface of the wooden sleeper 13. Item 6. An elastic bearing device for a sleeper according to Item 5.