JP3615678B2 - Sleeper anti-vibration device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration isolator for a sleeper on a railway track, and more particularly to a vibration isolator for a sleeper in which a vibration isolating structure for a sleeper laid on a concrete road floor is improved.
[0002]
[Prior art]
For sleepers laid on gravel on railway tracks or on concrete roadbeds, for example, a patent number already filed and registered by the present applicant in order to relieve the horizontal force caused by the passage of vehicles and rail movement. As disclosed in Japanese Patent No. 2908295, there is one having a configuration in which a vibration isolating device including a vibration isolating box is provided at both ends of the sleeper.
[0003]
In such a sleeper vibration isolator, as shown in FIGS. 5 and 6, a concrete roadbed 2 is placed on a concrete slab 1 of a railway track, and a concave groove 3 formed on the concrete roadbed 2 is provided. When the sleepers 5 made of PC concrete supported by the fastening fixtures 4 are fitted and laid, the vibration isolation units 10 are provided at both ends 5a and 5a of the sleepers 5, respectively. Thus, the vibration isolating structure is formed by elastically supporting the sleeper 5.
[0004]
As shown in FIG. 7, the vibration isolating unit 10 is a vibration isolating box having a bottomed rectangular shape in which an upper surface and an inner end surface formed of a high-rigidity material such as reinforced plastic such as FRP or iron or casting are released. 11 is provided with a plurality of upright pieces 12 on which the bottom elastic pads 13 described later can be positioned.
[0005]
And the end part 5a of the sleeper 5 is inserted in the vibration isolating box 11, and the peripheral surface of the sleeper 5 and the inner surface of the vibration isolating box 11, that is, the inner bottom surface 11a of the vibration isolating box 11, the outer side A bottom elastic pad 13, such as soft rubber, an end elastic pad 14, and a side elastic pad 15 are interposed between the opposing surfaces of the end surface side inner surface 11b and the front and rear inner surfaces 11c. It has the composition which becomes.
[0006]
By the way, as shown in FIGS. 8 and 9, the above-mentioned elastic pad, in particular, the bottom elastic pad 13 positioned on the inner bottom surface 11a of the vibration isolating box 11, has a plurality of ribs 13A on the front and back surfaces thereof in a lattice shape. The reinforcement and vibration-proofing effect are enhanced by the formation of these ribs 13A.
[0007]
[Problems to be solved by the invention]
However, in the sleeper vibration isolator having the conventional structure described above, when the vibration isolation unit 10 is assembled to the end 5a of the sleeper 4, as shown in FIG. 10 and FIG. While the bottom elastic pad 13 is positioned and fixed to the bottom surface 11a by the upright piece 12, the end elastic pad 13 integrally formed integrally with the end surface 6A and the front and rear side surfaces 6B of the sleeper end 5a The side elastic pad 14 is bent in a U-shape and is interposed and adhered to the end surface 6A and the front and rear side surfaces 6B of the sleeper 5 or embedded in the sleeper 5 in advance as shown in FIG. At present, after the bolt 8 is fastened and fixed to the insert member 7, the end 5 a of the sleeper 5 is fitted into the vibration-proof box 11 and assembled.
[0008]
For this purpose, the vibration isolator unit 10 must be assembled to the sleeper 5 at the production factory, and the side 6B of the sleeper 5 must be installed in advance when the assembly is performed at the rail laying site. The side elastic pads 14 are bonded to each other and not only need to be temporarily fixed with a fastening belt (not shown) but also suspended and carried to the work site. Attaching work is complicated, labor is required for construction, and if the insert member 7 is embedded in the sleeper 5, the manufacturing cost of the sleeper itself is significantly increased.
[0009]
The present invention has been made in view of the above circumstances, and is capable of easily assembling the vibration isolating unit to the sleeper and reducing the manufacturing cost of the sleeper. An object is to provide an apparatus.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention according to claim 1 of the present invention is configured such that both ends of a sleeper are fitted into a vibration isolating box of a vibration isolating unit having a bottomed form in which an upper surface and an inner end surface are released. In addition, an anti-vibration of a sleeper formed by laying on the road bed of a railroad track with an elastic pad interposed between each facing surface where the peripheral surface of the sleeper and the inner surface of the anti-vibration box face each other In the apparatus, the bottom elastic pad is positioned and mounted on the inner bottom surface of the vibration isolator box, and the side elastic pads are fixed to the front and rear inner surfaces of the vibration isolator box from the outside of the vibration isolator box, respectively. It is possible to attach the elastic pad for the end portion attached to the inner surface on the outer end face side of the vibration isolating box so as to be able to be attached.
[0011]
Further, the side elastic pad can be fastened with bolts to both left and right inner surfaces of the vibration isolating box via a washer.
[0012]
In other words, the present invention adopts the above-described configuration, so that each elastic pad is fixedly attached to each inner surface side of the vibration isolating box of the vibration isolating unit. Assembling work at the manufacturing factory or rail laying site can be easily performed, and the manufacturing cost of the sleeper itself can be reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings shown in FIGS. In the illustrated embodiment according to the present invention, the same reference numerals are used to denote the same parts as those in the conventional sleeper vibration isolator shown in FIGS.
[0014]
1 and 2 show the overall structure of a vibration isolator for sleepers according to the present invention, in which a concrete road bed 2 is placed on a concrete slab 1 of a railway track, and a recess formed on the concrete road bed 2 is shown. A sleeper 5 made of PC concrete, in which two pairs of rails R are supported by a fastening fixture 4, is laid in the groove 3, and vibration-proof units are provided at both ends 5 a and 5 a of the sleeper 5. 10 are provided.
[0015]
As in the conventional structure, the vibration isolating unit 10 is a vibration isolating box 11 having a bottomed rectangular shape in which an upper surface and an inner end surface formed of a high-rigidity material such as reinforced plastic such as FRP or iron or casting are released. And has an arrangement in which the end 5a of the sleeper 5 is inserted into the vibration isolating box 11.
[0016]
And between each facing surface where the peripheral surface of the sleeper 5 and the inner surface of the vibration isolating box 11 face each other, the bottom elastic pad 13 such as soft rubber, the end elastic pad 14 and the side as in the conventional structure are provided. Each elastic pad 15 is attached, and each elastic pad 13, 14, 15 is individually fixed and held on the inner surface side of the vibration isolating box 11 as shown in FIG. 3.
[0017]
That is, similarly to the conventional structure shown in FIG. 11, the bottom elastic pad 13 is positioned and attached to the inner bottom surface 11a of the vibration isolating box 11 by the upright piece 12, and the outer end face side inner surface 11b is attached. The attached elastic pad 14 for the end can be held by the elastic pad 15 for the side attached to the front and back inner side surfaces 11c.
[0018]
Further, as shown in FIG. 4, a bolt insertion hole 16 is formed through the side elastic pad 15 attached to the front and rear inner side surfaces 11 c of the vibration isolating box 11. A washer 17 is embedded and integrated, and a bolt 18 is inserted through the washer 17 from the outside into the bolt insertion hole 16 and screwed into a nut 19 provided on the inside of the washer 17. The pad 15 is fastened and can be fixed.
[0019]
As a result, the elastic pads 13, 14, 15 are fixedly attached to the inner surface side of the vibration isolating box 11 of the vibration isolating unit 10, so that the vibration isolating unit 10 is assembled to the sleeper 5. The work can be done easily at the production plant or at the rail laying site, and since there is no need to embed an insert member in the sleeper 5 as before, the manufacturing cost of the sleeper itself can be reduced, and the rail It can be easily carried to the site.
[0020]
Needless to say, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0021]
【The invention's effect】
As described above, according to the sleeper vibration isolator according to the present invention, each elastic pad is fixedly attached to the inner surface side of each vibration isolating box of the vibration isolating unit fitted into the end of the sleeper. As a result, it is possible to easily perform the assembly work at the production site of the vibration isolation unit for the sleeper or the rail laying site, and to reduce the manufacturing cost of the sleeper itself, It has the effect that it can be easily carried to the rail laying site.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a sleeper equipped with a vibration isolator according to the present invention.
2 is a plan view of FIG. 1. FIG.
3 is an enlarged vertical sectional view of a main part when viewed from the direction of arrows II in FIG. 1. FIG.
FIG. 4 is an exploded view of the sleeper and the vibration isolation unit.
FIG. 5 is an explanatory view showing a state in which a sleeper equipped with a conventional vibration isolator is laid on a concrete roadbed.
6 is an enlarged vertical cross-sectional view of a main part viewed from the direction of arrows II-II in FIG.
FIG. 7 is a plan view of a vibration isolating box in the conventional vibration isolating unit.
FIG. 8 is a plan view of a conventional elastic pad.
9 is a longitudinal sectional view of a main part as viewed from the direction of arrows III-III in FIG.
FIG. 10 is a plan view schematically showing an attached state of an elastic pad in a conventional vibration isolating box.
FIG. 11 is an exploded view of the conventional sleeper and the vibration isolation unit.
FIG. 12 is a plan view showing an assembled state of a conventional sleeper and a vibration isolation unit.
[Explanation of symbols]
1 Concrete slab (railroad track)
2 Concrete roadbed 3 Concave groove 4 Fastening fixture 5 Sleepers 5a, 5a End 10 Vibration isolation unit 11 Vibration isolation box 11a Inner bottom surface 11b Outer end surface side inner surface 11c Front and rear inner surfaces 12 Standing piece 13 Bottom elastic pad 13A Rib 14 End elastic pad 15 Side elastic pad 16 Bolt insertion hole 17 Washer 18 Bolt 19 Nut R Rail

Claims (2)

While inserting both ends of the sleeper into the vibration isolating box of the vibration isolating unit having the bottomed form where the upper surface and the inner end surface are released,
In the anti-vibration device for sleepers, the elastic pad is interposed between each facing surface where the peripheral surface of the sleeper and the inner surface of the anti-vibration box face each other, and laid on the road bed of the railway track.
Positioning and mounting a bottom elastic pad on the inner bottom surface of the anti-vibration box,
Side elastic pads are attached to both front and rear inner side surfaces of the vibration isolation box so that they can be fixed from the outside of the vibration isolation box, respectively.
An anti-vibration device for sleepers, characterized in that it can hold an elastic pad for an end attached to the inner surface on the outer end face side of the anti-vibration box. The sleeper vibration isolator according to claim 1 , wherein the side elastic pad can be fastened with bolts to both left and right inner surfaces of the vibration isolator box via a washer.

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