JPH089201Y2 - Concrete sleepers with elasticity - Google Patents

Description

TECHNICAL FIELD The present invention relates to a concrete sleeper having a vibration-proof rubber that damps vibrations of a passing vehicle between a roadbed and the concrete sleeper.

2. Description of the Related Art Conventionally, the vibration-proof rubber as described above is usually made of inexpensive natural rubber, synthetic rubber, or elastic material such as plastic material, silicon-based material, and recycled rubber. The anti-vibration rubber needs to be made soft in order to enhance the cushioning effect, and needs to be made small in order to enhance the economical efficiency.

However, if such an anti-vibration rubber is too soft, it becomes difficult to maintain a predetermined shape, a dimensional error occurs, and it becomes difficult to attach it to a predetermined position of the sleeper, and the desired function is exerted. It may not be possible. Therefore, the anti-vibration rubber has a problem that it is difficult to obtain appropriate hardness at low cost.

In addition, the method of attaching the anti-vibration rubber to the sleepers, the method of attaching with an adhesive, the method of making a box containing the anti-vibration rubber, and then attaching the whole box to the sleepers, There is a method in which a sleeper is put in a mold, rubber is injected into a gap provided between the mold and the sleeper, the mold is heated, and the rubber is brought into contact with the sleeper to attach the sleeper.

However, these mounting methods have the following problems, respectively.

As for the method of attaching, the moisture of the sleeper may cause uneven adhesive strength and the anti-vibration rubber may peel off.

 The mounting method requires a box manufacturing cost.

The mounting method requires a dedicated mechanical device for heating the sleepers.

Means for Solving the Problems The present invention provides a sleeper-embedded portion projecting on a vibration-proof rubber containing a reinforcing material having a shape closely attached to a lower surface, a side surface, and an end surface of a concrete sleeper, and the embedded portion is used as the sleeper. The above-mentioned problem is solved by being embedded and fixed in.

Action The reinforcing material reinforces the anti-vibration rubber to have a strength capable of holding it in a predetermined shape.

When a concrete sleeper is made, by inserting a vibration-proof rubber into a concrete formwork in advance, an embedded portion of the vibration-proof rubber is embedded in the sleeper, and the vibration-proof rubber is integrated with the sleeper.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The anti-vibration rubber 10 is provided between the concrete sleeper 11 and the concrete roadbed 12, elastically supports the sleeper 11 and absorbs vibration of a vehicle traveling on the rail R. Anti-vibration rubber 10 is made of natural rubber, synthetic rubber, or
It is made of an elastic material such as plastic rubber, silicon rubber, and recycled rubber.

As shown in FIG. 6, the anti-vibration rubber 10 has a bottom portion 21 and a bottom portion 21.
And has side portions 22, 22 that are substantially vertically standing on both left and right sides of the. The side portions 22 and 22 are portions that are in close contact with the side surfaces 31 and 31 of the sleeper 11. The portions projecting inward at the upper ends of the side portions 22, 22 are embedded portions 23, 23.

Inside the anti-vibration rubber 10, three reinforcing materials 13 are embedded.

The reinforcing member 13 (see FIGS. 4 to 6) has a shape in which a part of the central portion of the upper side of the quadrilateral frame is removed. The tips 51, 51 of the reinforcing member 13 project inward from the embedded portions 23, 23. The embedded portion 23 and the tip 51 of the reinforcing material 13
Is the bottom of the concrete sleeper 11, as described below.
Embedded in 32.

Other forms of anti-vibration rubber placed on both ends of sleeper 11
40 is provided between the sleeper 11 and the roadbed 12 similarly to the vibration-proof rubber 10, and the lower surface 33, the side surfaces 31, 31, the end surface 3 of the sleeper 11 are provided.
It serves to elastically support 4.

The anti-vibration rubber 40 has a bottom portion 41, side portions 42, 42, and an end portion 43 that are in close contact with the lower surface 33, the side surfaces 31, 31, and the end surface 34 of the sleeper 11, respectively. The portions projecting inward at the upper ends of the side portions 42, 42 are embedded portions 44, 44.

As shown in FIGS. 7, 8 and 9, reinforcing members 14, 15 and 15 are embedded inside the vibration-proof rubber 40. The shape of the reinforcing material 14 is the same as that of the reinforcing material 13. Reinforcement 14 tip 61,6
1 projects inward from the embedded portions 44, 44.

The reinforcing material 15 has a U shape and is embedded in the end portion 43 of the reinforcing material 40. One end 71 of the reinforcing material 15 is an end
It protrudes inward from the upper part of 43.

The above reinforcing materials 13, 14, 15 are made of steel, plastic,
It is a wire-shaped member made of a material such as carbon or glass. The reinforcing material may be a mesh member (not shown).

The above anti-vibration rubber 10,40 can be used for sleepers 1 by the following method.
Installed in the process of making one.

First, two anti-vibration rubbers 10 and 40 are put in predetermined positions in a mold (not shown) for making concrete sleepers. The formwork is shaped like an sleeper turned inside out.

Next, concrete is poured into the formwork. When the concrete is full, each embedded part 2 of the anti-vibration rubber 10,40
3,23,44,44 and each tip of the reinforcing material 13,14,15 51,51,61,61,71
Embedded in concrete.

When the formwork is removed after the concrete has set, the anti-vibration rubber
Sleeper 11 integrated with 10,40 is turned over (1st
In the figure, the sleeper can be taken out in the upside down position. At this time, the embedded portion of the anti-vibration rubber is embedded in the sleeper, and the bottom portions 21, 41 and side surface portions of the anti-vibration rubber are embedded.
22, 42, the end 43 is in close contact with the sleeper, or
Somewhat embedded.

After that, the sleeper becomes a product through steps such as introduction of prestress and inspection.

Sleepers with anti-vibration rubber made in this way 11
Will be installed on concrete roadbeds made by the following two construction methods.

The first construction method is a method of assembling a plate frame having a predetermined size so that a hole having a size capable of installing a sleeper with a vibration-proof rubber is made, and pouring concrete outside the plate frame. After the concrete has set, sleepers are placed in the holes and fixed. Finally, the track is completed by fastening rails and sleepers.

The second construction method is to arrange sleepers with anti-vibration rubber and fasten the rails to the sleepers. In this state, the rails are temporarily supported so that the rails are set at the proper positions, and then concrete is poured into the rails to complete the track.In this construction method, the vibration-proof rubbers 10 and 40 are attached. Foam (foam) plates 80, 80 made of polyethylene, polypropylene, polystyrene, polyurethane, phenol, etc., on the parts other than the existing parts (Fig. 10, Fig. 11
(See the figure) is attached by an adhesive. Foam board
The cross-sectional shape of 80 is U-shaped. Also, foam board 80
The height and thickness of the anti-vibration rubber are almost the same as those of the anti-vibration rubber.

Even if the roadbed is gravel, the foam plate 80 can be attached to the sleeper with the anti-vibration rubber, and the sleeper can be embedded in the gravel to form a track.

Effect of the Invention The concrete sleeper in which the anti-vibration rubber of the present invention is embedded has the following effects.

Since the anti-vibration rubber is equipped with a reinforcing material, the anti-vibration rubber can obtain appropriate hardness even if it is an inexpensive elastic body, and it does not lose its shape and has a predetermined shape. Can be held for a long time.

Anti-vibration rubber does not require adhesives, boxes, molds, etc., which were required in the past, because the embedded part is embedded in the concrete when the concrete sleepers are manufactured, and the concrete solidifies and is integrated with the sleepers. It is possible to obtain an inexpensive sleeper with a vibration-proof rubber.

Since the embedding part is embedded in the sleeper, the close contact state of the anti-vibration rubber with the sleeper can be maintained for a long period of time, and the gravel, earth and sand, etc. that have entered into the gap between the sleeper and the anti-vibration rubber, which was required previously, can be removed. Eliminates the need to do work.

[Brief description of drawings]

FIG. 1 is a front view of a concrete sleeper in which a rubber cushion of the present invention is embedded, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a left side view of FIG. 1, and FIG. 4 is a rubber cushion. FIG. 5, FIG. 5 is a right side view of FIG. 4, FIG. 6 is a sectional view taken along the line 6-6 in FIG. 5, and FIG. 7 is a plan view of another form of rubber cushion, FIG. Is a right side view of FIG. 7, FIG. 9 is a sectional view taken along the line 9-9 in FIG.
FIG. 10 is a front view of a sleeper with a vibration-proof rubber provided with a foam plate, and FIG. 11 is a plan view of FIG. 10,40 …… Vibration-proof rubber 11 …… Concrete sleepers 12 …… Concrete base (base) 13,14,15 …… Reinforcement 23,44 …… Embedded part

Claims (2)

[Scope of utility model registration request] 1. An elastic concrete in which a sleeper-embedded portion is projectingly provided on a vibration-proof rubber containing a reinforcing material having a shape closely attached to a lower surface and a side surface of a concrete sleeper, and the embedded portion is embedded and fixed in the sleeper. Made sleepers. 2. A sleeper-embedded portion is projectingly provided on a vibration-proof rubber containing a reinforcing material, which has a shape in close contact with the lower surface, side surface and end surface of a concrete sleeper, and the embedded portion is embedded and fixed in the sleeper. A concrete sleeper that you have.