JPH09143904A - Rail-type insulating plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make use for insulating fish-plates having no recessed part by providing locking projections inserted and held between the adjacent end surfaces and the insulating fish-plates. SOLUTION: When the root part A between the head part 5a (5b, 83) of a rail-type insulating plate 1 and the web parts 4a (4b, 82) thereof is broken, the respective locking projections 6a (6b), 7a (7b) are held between the side surfaces of web parts 42 of the rails 40 and the opposing surfaces of the insulating fish-plates 21, and therefore both the web parts 4a (4b, 82) of the rail-type insulating plate 1 and the base parts 3a (3b, 81) thereof remains the joint part between the rails 40 or P between the rail end surfaces. On the other hand, when the root part B between the web parts 4a (4b, 82) and the base parts 3a (3b, 81) is broken, both the web parts 4a (4b, 82) and the head parts 5a (5b, 83) remains the joint part between the rails 40, so that both the rails 40 are prevented from being electrically short-circuited. Thus, the rail-type insulating plate without recessed parts or that is made of resin and can be used as the insulating fish-plate as it is can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to connecting end portions of rails by an insulating seam plate disposed between side surfaces of end portions of adjacent rails, and opposing end surfaces of the connected rails. The present invention relates to an insulating plate interposed therebetween, and more particularly, to a rail-type insulating plate that is prevented from falling off due to damage.

[0002]

2. Description of the Related Art Conventionally, at a connecting portion of railroad rails, a member called a seam plate is arranged so as to extend between side surfaces of end portions of adjacent rails.

This seam plate is connected to the ends of adjacent rails by tightening tools such as bolts. That is,
Adjacent rails are connected by this joint plate.

By the way, it is necessary to form an electric circuit in a rail provided at a location where a traffic signal or a railroad crossing alarm is installed in a certain section including the traffic light or the railroad crossing alarm.
Therefore, the joint plate that connects the rails in the certain section needs to have an insulating property. As described above, the joint plate that connects the rails of a certain section forming the electric circuit is generally called an insulating joint plate to distinguish it from the joint plate that connects the rails of other sections that do not require insulation. .

Further, an insulating plate having a shape substantially the same as the cross-sectional shape of the rail is interposed between the end surfaces of the rail connected to each other by the insulating seam plate.

The rail-shaped insulating plate has a base portion which is a portion to be placed on the sleeper, a head portion which is a portion where the train wheels are in contact with each other, and a body which is narrower than the base portion and the head portion. The base portion of the head and the body portion and the base portion of the body portion and the base portion are weak points in terms of strength.

Therefore, in the case of breaking at this portion,
There is a problem in that the insulating plate falls off between the end faces of the rail, the electrical insulating function of the joint portion of the rail is lost, and signal failure occurs.

Therefore, in order to reinforce such weak points and prevent the insulating plate from falling off due to breakage of the weak points,
For example, a rail type insulating plate for rail insulation disclosed in Japanese Utility Model Laid-Open No. 62-114901 has been proposed.

This rail-type insulating plate for rail insulation is locked on both sides of the body of a rail-shaped insulating plate body formed to have a cross-sectional shape of the rail so as to be locked in recesses formed in the insulating joint plate. The projection portion for use is formed.

According to this rail type insulating plate for rail insulation, when the base parts of the head and the body are broken, the rail for rail insulation is engaged by the engagement of the locking projection and the recess of the insulating joint plate. If the body and base of the insulation board remain at the rail joint (between the rail end faces) and the base of the body and base breaks, the body and head remain at the rail joint. Thus, it is possible to prevent an electrical short circuit between both rails.

[0011]

However, such a conventional rail-type insulating plate for rail insulation can be used only for an insulating joint plate having a concave portion, and for example, a resin insulating joint plate having no concave portion cannot be used. There was a problem that it could not be used as it was.

Further, when a resin-made insulating joint plate is used, it is repeatedly applied to the upper inclined surface of the insulating joint plate (the portion that contacts the lower surface of the head of the rail) due to the bending of the joint portion of the rail when the train passes. There is also a problem that buckling occurs at the upper part of the insulating joint plate due to compression and friction.

The present invention was devised to solve such a problem, and an object thereof is to separate from the rail end faces due to breakage of the root portion of the head and the trunk portion and the root portion of the trunk portion and the base portion. The present invention is to provide a rail-type insulating plate that prevents the occurrence of the above and also enables the use of an insulating seam plate having no recess.

[0014]

In order to solve the above-mentioned problems, the rail type insulating plate according to claim 1 of the present invention comprises an insulating seam plate which is disposed so as to straddle between the end side surfaces of adjacent rails. A rail type insulating plate in which end portions of rails are connected to each other and interposed between opposed end surfaces of the connected rails, the rail type insulating plate being inserted between end surface of the rail and the insulating joint plate. A locking projection that is sandwiched between the two is provided.

As a result, when the base portion of the head portion and the body portion is broken, the locking projection is sandwiched between the end side surface of the rail and the insulating joint plate, so that the rail type insulating plate is formed. The body and the base of the rail joint of the rail (between the rail end faces)
When the base portion of the body portion and the base portion is broken, the body portion and the head portion remain at the joint portion of the rail, and an electrical short circuit between both rails can be prevented.

According to a second aspect of the present invention, in the rail type insulating plate, the end portions of the rails are connected to each other by an insulating seam plate which is disposed so as to extend between the side surfaces of the end portions of the adjacent rails. A rail-shaped insulating plate interposed between opposed end surfaces of the connected rails, the rail contact being inserted and clamped at a contact portion between a lower surface of the head of the rail and an upper inclined surface of the insulating joint plate. It is provided with protrusions for protection and locking.

This makes it possible to prevent damage to the upper sloping surface of the insulating joint plate (the portion in contact with the lower surface of the head of the rail) due to the bending of the joint portion of the rail when the train is passing and the damage due to friction. Also, when the base portion of the head portion and the body portion is broken, the protrusion is sandwiched between the lower surface of the head portion of the rail and the upper inclined surface of the insulating joint plate,
If the head of the rail-type insulation plate remains at the rail joint (between the rail end faces) and the base of the body and base breaks, the head and body remain at the rail joint. , It is possible to prevent an electrical short circuit between both rails.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are a front view, a plan view and a side view of a rail type insulating plate (hereinafter, simply referred to as an insulating plate) corresponding to claim 1 of the present invention, and FIG. 4 shows the insulating plate as a rail end surface. FIG. 5 is a side view showing a state in which it is interposed therebetween, and FIG. 5 is a vertical sectional view showing a state in which an insulating seam plate is attached to a rail.

As shown in FIGS. 4 and 5, the rail 40 is a base portion 41 which is a portion placed on a sleeper (not shown).
And a head 4 which is a portion where wheels of a train (not shown) come into contact with each other.
3 and a body portion 42 formed to be narrower than the base portion 41 and the head portion 43.

Further, the insulating plate 1 of this embodiment has a flat plate-like insulating plate body 8 on both sides of which a part of the locking projections 6a,
Flat plates 2a and 2b to be 7a, 6b, and 7b are additionally provided, and these insulating plate body 8 and flat plates 2a and 2b are provided.
Has a shape that is substantially the same as the cross-sectional shape of the rail 40 when viewed from the front. That is, the bases 81, 3a, 3b, which are the parts placed on the sleepers, not shown, and the heads 83, 5a, 5b, which are the parts that the wheels of the train, not shown, contact
And the body portions 82, 4a, 4b formed to be narrower than the base portions 81, 3a, 3b and the head portions 83, 5a, 5b.

Further, flat plate-like locking projections are formed on both side edges of the body portions 4a, 4b of the flat plates 2a, 2b so as to extend in a direction perpendicular to a plane including the body portion 4a (or 4b). Part 6a,
7a and 6b, 7b are formed respectively. That is, the body 42 of the rail 40 on one side is sandwiched by the pair of locking projections 6a and 7a from both sides, and the body 42 of the rail 40 on the other side is sandwiched by the pair of locking projections 6b and 7b. It is designed to be sandwiched from both sides.

The insulating joint plate 21 is formed in a horizontally long flat plate shape (shown by a chain double-dashed line in FIG. 4), and the surface 22 of the rail 40 facing the body portion 42 is formed into a substantially flat surface. ing. Further, in the facing surface 22, four through holes 27a, 27a, 27b, 2 are provided along the width direction thereof.
7b (see FIG. 4) are formed, and the two through holes 27a, 27a on the left side and the two through holes 27b, 27 on the right side are formed.
b and each pair.

The surface (outer surface) 2 opposite to the facing surface 22
8 is formed in a concavo-convex shape, and the recess 28a serves as a fitting groove for the bolt 36 or the nut 37.

The insulating plate 1 thus formed is inserted into the gap p between the end faces of the adjacent rails 40, 40. At this time, a pair of engaging members provided on both side edges of the body portion 4a. The rail 40 on one side by the stop projections 6a, 7a
The body portion 42 of the rail 40 is sandwiched from both sides, and the body portion 42 of the rail 40 on the other side is sandwiched from both sides by the pair of locking projections 6b and 7b provided on both side edges of the body portion 4b.

After that, the insulating joint plate 21 is arranged so as to straddle between the end side surfaces of the adjacent rails 40, 40, and the bolt 36 is provided with the through hole 27a (27b) of the insulating joint plate 21 and the bolt insertion hole of the rail 40. Insert into 45, nut 37
It is attached in the state shown in FIGS. 4 and 5 by tightening with.

That is, in the insulating joint plate 21, the upper inclined surface 23 is abutted along the lower surface of the head portion 43 of the rail 40, and the lower inclined surface 24 is contacted along the upper surface of the base portion 41 of the rail 40. Are contacted, and the facing surface 2 has locking projections 6a,
7a or 6b, 7b is contacted. That is, the locking protrusions 6a, 7a, 6b, 7b of the insulating plate 1 are not
It is structured such that it is sandwiched and fixed by being inserted between the side surface of the body portion 42 and the facing surface 22 of the insulating joint plate 21.
The reference numeral 38 in FIG. 5 is a washer.

With such a structure, when the base portions A of the head portions 5a, 5b, 83 and the body portions 4a, 4b, 82 of the insulating plate 1 are broken, the respective locking projections 6 are formed.
a, 7a, 6b and 7b are side surfaces of the body portion 42 of the rail 40,
Since it is sandwiched between the facing surface 22 of the insulating seam plate 21 and the body portions 4a, 4b, 82 and the base portions 3a, 3 of the insulating plate 1.
b and 81 are joints of the rail 40 (p between rail end faces)
Remains on the body 4a, 4b, 82 and the base 3a, 3b, 8
When the base portion B with 1 is broken, the body portions 4a, 4
b, 82 and the head portions 5a, 5b, 83 remain at the joint portion of the rail 40 to prevent an electrical short circuit between the rails 40, 40.

6 to 8 are a front view, a plan view and a side view of an insulating plate 11 according to claim 2 of the present invention, and FIG. 9 is a longitudinal sectional view showing a state in which an insulating joint plate 21 is attached to a rail. Is.

The insulating plate 11 of the present embodiment is provided on both sides of a flat plate-shaped insulating plate body 18 with a part of the locking protrusions (rail contact protection and locking protrusions) 16a, 17a, 16a.
b and 17b, which are flat plates 12a and 12b respectively, are attached to the insulating plate body 18 and the flat plates 12a and 12b.
The shape of b as viewed from the front is substantially the same as the cross-sectional shape of the rail 40. That is, the bases 181, 13a, 13b, which are the parts placed on the sleepers (not shown), and the heads 183, 1 that are the parts where the wheels of the train (not shown) come into contact.
5a, 15b, and the body portion 1 formed to be narrower than the base portions 181, 13a, 13b and the head portions 183, 15a, 15b.
82, 14a, 14b.

Further, the heads 15a of the flat plates 12a and 12b,
Heads 15a (or 15b) are provided on both lower inclined edges of 15b.
The locking protrusions 16a, 17a and 16b, 17b are formed in a flat plate shape in a manner extending in a direction perpendicular to a plane including the above. That is, the pair of locking protrusions 16
a and 17a are attached to both lower surfaces of the head portion 43 of the rail 40 on one side, and the other locking projections 16b and 17b are attached to both lower surfaces of the head portion 43 of the rail 40 on the other side. It has become so.

When the insulating plate 11 is manufactured, the locking projections 16a, 17a and 16b, 17b are flush with the plane including the head portion 15a (or 15b) as shown by the chain double-dashed line in FIG. It is formed in the shape of "H" extended by
Bend as shown by arrow m in FIG.
(Or 15b) may be formed so as to extend in a direction perpendicular to a plane including the plane.

Since the shape of the insulating joint plate 21 is the same as that of the above-mentioned embodiment, the same reference numerals are given here and detailed description thereof will be omitted.

The insulating plate 11 thus formed is inserted and arranged in the gap between the end faces of the adjacent rails 40, 40. At this time, a pair of lower side inclined edges of the head portion 15a are provided. The locking projections 16a and 17a of the head are attached to both lower surfaces of the head portion 43 of the rail 40 on one side, respectively.
a pair of locking projections 16 provided on both lower inclined edges of b
b and 17b are respectively attached to both lower surfaces of the head portion 43 of the rail 40 on the other side.

After that, the insulating joint plate 21 is arranged so as to straddle between the end side surfaces of the adjacent rails 40, 40, and the bolts 36 are provided with the through holes 27a (27b) of the insulating joint plate 21 and the bolt insertion holes of the rail 40. Insert into 45, nut 37
It is attached in the state shown in FIG. 9 by tightening with.

That is, in the insulating joint plate 21, the upper inclined surface 23 has the locking projections 16a, 17a of the insulating plate 11,
16b, 17b and the lower inclined surface 24
Is abutted along the upper surface of the base portion 41 of the rail 40, and the facing surface 2 is disposed so as to have a slight gap with respect to the body portion 42 of the rail 40.

That is, each locking projection 16 of the insulating plate 11
a, 17a, 16b and 17b are head portions 43 of the rail 40.
It has a structure of being sandwiched and fixed by being inserted between both lower surfaces and the upper inclined surface 23 of the insulating joint plate 21.

By adopting such a structure, the repeated compression and friction of the insulating joint plate 21 on the upper inclined surface 23 due to the bending of the joint portion of the rail 40 when the train is passing through is used for each intervening locking. Protrusions 16a, 17a, 16
b, 17b. Therefore, it is possible to prevent damage to the insulating joint plate 21 due to such repeated compression and friction on the upper inclined surface 23. Also, the head portions 15a, 15b, 183 of the insulating plate 11 and the body portions 14a, 1
When the base portion A with 4b, 182 is broken, the respective locking projections 16a, 17a, 16b, 17b form the lower surface of the head 43 of the rail 40 and the upper inclined surface 23 of the insulating joint plate 21. The head portions 15a, 15b, 183 of the insulating plate 1 remain at the joints of the rail 40 because they are sandwiched between the body portions 14a, 14b, 182 and the base portions 13a, 13.
When the base portion B with b, 181 is broken, the head portions 15a, 15b, 183 and the body portions 14a, 14b, 182 are broken.
Remains on the joint of the rails 40, and both rails 40,
The electrical short circuit of 40 is prevented.

10 and 11 show another embodiment of the insulating plate. The insulating plate 50 shown in FIG. 10 is a taper in which both surfaces of the insulating plate body 51 are gradually thinned from the bottom to the top. It is formed on the surface. Further, the insulating plate 60 shown in FIG. 11 has step portions 61 on both surfaces near the top portion to make the top portion thin. By doing so, even if there is the flow portion 10a on the end surface of the rail 10, the insulating plates 50 and 60 can be escaped from this.

In each of the above-mentioned embodiments, the insulating plate bodies 8 and 18 of the present invention are formed of fiber-reinforced thermosetting resin. As the thermosetting resin, for example, unsaturated polyester resin, epoxy resin, polyethylene resin, etc. are preferably used. As the reinforcing fiber, vinylon fiber, glass fiber, aramid fiber or the like is preferably used.

Further, the locking projections 6a, 7a, 6b, 7
The material of each flat plate 2a, 2b, 12a, 12b forming b, 16a, 17a, 16b, 17b is iron, steel,
Stainless steel or the like is preferably used. Also, the locking projections 6a, 7a, 6b, 7b, 16a, 17a, 16
The wall thickness of b and 17b is preferably about 0.3 to 0.5 mm.

As a method of manufacturing the insulating joint plate 21 having the above-mentioned structure, conventionally known fiber-reinforced synthetic resin molding methods such as a pultrusion molding method, a press molding method and a reaction injection molding method can be adopted. The pultrusion method is the most advantageous from the viewpoints of properties, stackability, and high fiber content.

In the pultrusion molding method, the reinforcing fibers impregnated with the thermosetting resin are aligned and then continuously transferred into a mold having an inner surface shape suitable for the cross-sectional shape of the insulating joint plate 21. It is cured by heating, pulled out, cut into a predetermined size, and finally a bolt insertion hole is opened.

As the thermosetting resin used as the material of the insulating joint plate 21, unsaturated polyester resin, epoxy resin, vinyl ester resin, phenol resin, etc. are preferably used. Further, as the reinforcing fiber used as the material of the insulating joint plate 21, glass fiber, carbon fiber,
Aramid fiber, acrylic fiber, vinylon fiber and the like are preferably used. As the form of the fiber, roving, chopped straddle mat, continuous mat, roving cloth and the like are used.

[0045]

The rail type insulating plate according to the first aspect of the present invention has the structure in which the locking projection is inserted and sandwiched between the end side surface of the rail and the insulating joint plate. When the base part of the head and the body part is broken, the locking projections are clamped between the end side surface of the rail and the insulating joint plate, so the body part and the base part of the rail type insulating plate When and remain at the seam of the rail and the base part of the body and base are broken, the body and the head remain at the seam of the rail,
It is possible to prevent an electrical short circuit between both rails.

A rail type insulating plate according to a second aspect of the present invention is for rail contact protection and engagement which is inserted and clamped at a contact portion between a lower surface of a head of a rail and an upper inclined surface of an insulating joint plate. Since the stopper projections are provided, it is possible to prevent repeated insulation compression and frictional damage to the upper inclined surface of the insulating joint plate due to the bending of the joint portion of the rail when the train passes. In addition, when the base part of the head and the body part is broken, the protrusion is sandwiched between the lower surface of the rail head and the upper sloping surface of the insulating joint plate. Remains on the rail joint, and the base of the body and base is broken, the head and body remain on the rail joint, preventing electrical shorting between the rails. It is possible.

[Brief description of the drawings]

FIG. 1 is a front view of a rail type insulating plate corresponding to claim 1 of the present invention.

FIG. 2 is a plan view of a rail type insulating plate corresponding to claim 1 of the present invention.

FIG. 3 is a side view of a rail type insulating plate corresponding to claim 1 of the present invention.

FIG. 4 is a side view showing a state where a rail type insulating plate is inserted between the rail end faces.

FIG. 5 is a vertical cross-sectional view showing a state in which an insulating joint plate is attached to a rail.

FIG. 6 is a front view of a rail type insulating plate corresponding to claim 2 of the present invention.

FIG. 7 is a plan view of a rail type insulating plate corresponding to claim 2 of the present invention.

FIG. 8 is a side view of a rail type insulating plate corresponding to claim 2 of the present invention.

FIG. 9 is a vertical cross-sectional view showing a state in which an insulating seam plate is attached to a rail.

FIG. 10 is a side view showing another embodiment of the rail type insulating plate, showing a state of being inserted between the rail end faces.

FIG. 11 is a side view showing another embodiment of the rail type insulating plate, showing a state in which the rail type insulating plate is inserted between the rail end surfaces.

[Explanation of symbols]

1,11 Rail type insulating plate 6a, 7a, 6b, 7b, 16a, 17a, 16b, 1
7b Locking protrusion 21 Insulation seam plate 40 Rail

Claims (2)

[Claims] 1. A rail, wherein end portions of rails are connected to each other by an insulating seam plate disposed across end side surfaces of adjacent rails, and the rails are interposed between opposed end surfaces of the connected rails. A rail-shaped insulating plate, characterized in that a locking projection that is inserted and sandwiched between an end side surface of the rail and the insulating joint plate is provided. 2. A rail which is connected between end portions of rails by an insulating seam plate which is disposed so as to straddle end side surfaces of adjacent rails, and which is inserted between the end surfaces of the connected rails which face each other. In the shaped insulating plate, there is provided a rail contact protection and locking protrusion that is inserted and sandwiched in a contact portion between the lower surface of the head of the rail and the upper inclined surface of the insulating joint plate. Rail type insulation board.