JP2015074899A - Conductor fixture of railroad rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conductor fixture capable of holding a plurality of conductors.SOLUTION: The conductor fixture comprises a gripping part 20 installed on the bottom surface side of a rail bottom part 92 of a railroad rail 90 and holding the rail bottom part, an extension part 24 for extending the upper surface side of the rail bottom part toward the rail web 91 side from the gripping part and a holding part 40 uplifted by bending from a tip part of the extension part and holding the conductors 81 and 82, and recessed parts 41 and 42 for holding the conductors are vertically juxtaposed and formed in a plurality in the holding part.

Description

  The present invention relates to a railway rail conductor fixture.

For railroad rails (hereinafter referred to as rails), for example, conductors used in track circuits, conductors for connecting rails to each other, and the like may be welded to the abdomen of the rails. These conductors are reinforceably held by conductor fixtures so that the welds are not separated and dropped due to vibration loads generated when the train passes on the rails.
As shown in FIGS. 12 to 14, the conventional conductor fixture 100 includes a grip 110 that grips the rail bottom from both sides in the rail width direction, and an extension that extends from one end of the grip 110 to the abdomen side of the rail. It is comprised from the protrusion part 130 and the holding | maintenance part 120 provided in the front-end | tip part of the extension part 130. FIG.
The holding part 110 of the conductor fixture 100 is formed in a bowl shape that rises so that both end parts 111 and 112 hold both side parts of the rail bottom part. One end 112 is connected to an extension 130 that extends to the vicinity of the rail abdomen, and a holding portion 120 is formed at the tip of the extension 130.
The holding part 120 is bent and raised from the tip part of the extension part 130, and a concave part 121 that faces the rail abdomen is formed. And in the conductor fixture 100, the conductor was hold | maintained by pressing to the rail abdominal part side in the state which has arrange | positioned the conductor inside this recessed part 121 (for example, refer nonpatent literature 1).

FPCI Copper Thermit Welding Bond Catalog, Furukawa Power Components Co., Ltd., issued on November 30, 2010

By the way, there are cases where a plurality of types of conductors are attached to the rail, and there are cases where two conductors including spare wirings are connected in order to ensure the reliability of the operation of the circuit or the like.
However, the conductor fixture 100 can only hold one conductor because the holding portion 120 that holds the conductor has only one recess 121.

For this reason, when a plurality of conductors are held by the conventional conductor fixture 100, it is necessary to prepare and hold a conductor fixture for each conductor individually.
However, the work of connecting the conductors to the rails and the work of attaching the conductor fixtures must be done within a limited time when the railway is not operating, and the appropriate places for installing the conductor fixtures are limited. The increase in the number of conductor fixtures to be attached has made the operation difficult.

  An object of the present invention is to provide a conductor fixture capable of holding a plurality of conductors.

  The present invention is attached to a bottom surface side of a rail bottom portion of a railroad rail, and holds a grip portion that grips the rail bottom portion, and an extension portion that extends from the grip portion toward the rail abdomen side on the top surface side of the rail bottom portion. And a holding part that holds the conductor and is bent up from the tip of the extension part, and a plurality of concave parts that hold the conductor are arranged in the holding part in the vertical direction.

  Since the rail rail conductor fixture has a plurality of concave portions in which the holding portions are arranged vertically, it is possible to hold the plurality of conductors side by side.

Further, in the above invention, the plurality of concave portions may be formed so that a depression is deeper toward a lower one.
In the case of the above configuration, the lower concave portion is used for holding a conductor having a large outer diameter, and the upper concave portion is used for holding a conductor having a small outer diameter. Then, by properly using them as described above, it is possible to appropriately maintain the holding pressure of each recess by dispersing the holding pressure of the conductor appropriately for each of the recesses arranged vertically.

Moreover, the said invention WHEREIN: The said holding | maintenance part is good also as a structure inclined toward the said rail abdominal part side.
In the case of the above configuration, it is possible to secure a sufficient holding pressure for the upper concave portion that tends to cause a decrease in holding pressure when mounted on a railroad rail.

Moreover, in the said invention, you may make the opening angle of the said extension part and the said holding | maintenance part larger than the opening angle of the upper surface of the said rail bottom part, and the said rail belly part.
In the case of the above configuration, even when the conductor is held by the lower concave portion, the upper concave portion is tilted toward the rail abdomen, and the holding pressure of the conductor in the upper concave portion can be secured.

Further, in the above invention, when the conductor fixture is mounted on the railroad rail, the extended end portion of the extended portion does not contact the rail bottom portion and the rail belly portion, and the holding portion is the rail belly portion. You may form so that it may contact.
In the case of the above configuration, the holding pressure based on the extending portion and the holding pressure based on the holding portion act on the holding portion, and the conductor can be held properly.

Moreover, in the said invention, it is good also as a structure which forms the whole said conductor fixing tool from the wire which has elasticity.
In this case, manufacture becomes easy and it becomes possible to provide a highly reliable conductor fixture.

Moreover, in the said invention, you may form the said holding | maintenance part from the said wire shape | molded by the rectangular frame shape.
If it carries out like this, it will become easy to reinforce and fix a conductor with a binding band using a rectangular horizontal part, and it will become possible to hold a conductor more firmly.

As described above, according to the present invention, a conductor fixture capable of holding a plurality of conductors can be provided.
According to this conductor fixture, the number of conductor fixtures attached to the railroad rail can be reduced, and even when the installation place is small or the work time is short, the reinforcing and fixing work of the conductor can be carried out smoothly. it can.

It is a perspective view which shows the state which hold | maintained two conductors along the railroad rail with the conductor fixing tool which concerns on embodiment of invention. It is a front view which shows the conductor fixing tool of the state which is not mounted | worn with a railroad rail. It is a front view which shows the conductor fixing tool of the state with which the rail was mounted | worn. It is a side view which shows the conductor fixing tool of the state which is not mounted | worn with a rail. It is a top view which shows the conductor fixing tool of the state which is not mounted | worn with a rail. It is a front view which shows the conductor fixing tool of the state with which it attached to the railroad rail and hold | maintained two conductors. It is a front view which shows the conductor fixing tool of the state with which it attached to the railroad rail and hold | maintained the conductor larger diameter than FIG. It is a front view which shows the conductor fixing tool of the state with which it attached to the railroad rail and hold | maintained one conductor only on the upper side. It is a front view which shows the conductor fixture of the state with which it attached to the railroad rail and hold | maintained only one conductor on the lower side. It is a perspective view which shows the state which the conductor fixing tool hold | maintained two small diameter conductors, assisting with a binding band. It is a front view which shows the other example of the conductor fixing tool of the state with which the rail was mounted | worn. It is a front view of the conventional conductor fixing tool. It is a side view of the conventional conductor fixing tool. It is a top view of the conventional conductor fixing tool.

[Outline of Embodiments of the Invention]
Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a plurality of conductors are connected to a rail abdomen 91 of a railroad rail (hereinafter simply referred to as a rail) 90 for various purposes such as energization or signal detection of a track circuit or conductor connection between rails. Is done. FIG. 1 illustrates a case where two conductors 81 and 82 are connected.
Each of the conductors 81 and 82 has a connection terminal at the tip, and is connected to the rail abdomen 91 by copper thermite welding. The leading ends of the conductors 81 and 82 are connected to different positions in the vertical direction and the rail longitudinal direction, and are held by the conductor fixture 10 in a state of being vertically aligned along the rail 90 from the respective connection positions. Yes.

[Conductor fixture: Overall overview]
2 to 5, the conductor fixture 10 is attached to the bottom surface side of the rail bottom portion 92 of the rail 90, the grip portion 20 that grips the rail bottom portion 92 from both sides in the rail width direction, and the grip portion 20 is extended from the one end portion 22 of the rail 20 to the rail abdomen 91 side, and is bent up from the distal end portion of the extension portion 24 to hold the conductors 81 and 82. Holding part 40. The grip part 20 and the extension part 24 are connected via a bent part 27, and the extension part 24 and the holding part 40 are connected via a bent part 25. The conductor fixture 10 is entirely formed of a single metal wire having high rigidity as a wire having elasticity.
The longitudinal direction of the rail 90 is assumed to be horizontal. In addition, a horizontal direction and a direction perpendicular to the longitudinal direction of the rail is referred to as a rail width direction.

[Conductor fixture: Grasping part]
The gripping portion 20 is formed in a bowl shape in which both end portions 21 and 22 rise from the cross-sectional shape of the rail bottom portion 92 in order to grip the rail bottom portion 92 from both sides in the rail width direction. And in the center part, it has the expansion-contraction part 23 which provides a gripping force, when attaching to the rail bottom part 92. As shown in FIG.

As shown in FIG. 5, the expansion / contraction part 23 is formed in the shape meandered along the rail width direction, and can be expanded-contracted in the longitudinal direction. Further, the width of the gripping portion 20 in the rail width direction is set somewhat shorter than the entire width of the rail 90.
When attaching the grip 20 to the rail bottom 92, one end of the rail bottom 92 is inserted inside the one end 22 and the other end 21 is pulled with a tool to extend the stretchable portion 23, and the other end 21 is hooked on the other end of the rail bottom 92. Thereby, the both ends 21 and 22 can grip the rail bottom 92 by the tension of the expansion / contraction part 23, and the grip 20 can be fixed to the bottom side of the rail bottom 92.

[Conductor fixture: Extension part]
As shown in FIG. 2, the extending portion 24 extends straight from the upper end of the one end portion 22 of the gripping portion 20 toward the rail abdominal portion 91 side at an inclination angle substantially coincident with the upper surface of the rail bottom portion 92. The boundary between the gripping part 20 and the extension part 24 is a bent part 27. Further, the extended portion 24 is bent upward at the tip, and is connected to the holding portion 40 via the bent portion 25.

[Conductor fixture: Holding part]
As shown in FIG. 4, the holding portion 40 is formed in a rectangular frame shape whose shape viewed from the rail width direction is long in the vertical direction. Further, as shown in FIG. 2, when viewed from the rail longitudinal direction, the holding portion 40 is inclined in a direction in which the upper end portion falls toward the rail abdomen 91 side.
Furthermore, the holding part 40 is formed with arc-shaped curved parts 411 and 411 and curved parts 421 and 421 at the upper end and lower end of a portion corresponding to a pair of long sides in a rectangle. The pair of curved portions 411, 411, and 421, 421 are all formed with the concave side facing the rail abdomen 91, and the lower curved portions 421, 421 are recessed relative to the upper curved portions 411, 411. The depth of is increased.
The upper pair of curved portions 411 and 411 constitute the upper concave portion 41 for holding one conductor 81, and the lower pair of curved portions 421 and 421 for lower side holding the other conductor 82. A recess 42 is formed.

Further, each of the bending portions 411 and the bending portion 421 are connected by a linear connecting portion 43.
Here, in the following description, when “the opening angle θ between the upper surface of the rail bottom 92 and the rail abdomen 91” is referred to, the standing direction of the rail abdomen 91 with respect to the rail bottom 92 as shown in FIGS. The crossing angle between (= vertical vertical direction) and the extension line along the upper surface of the rail bottom portion 92 on the side where the extension portion 24 is located is shown.
In the natural state shown in FIG. 2 (in a state where the rail 90 is not mounted), the opening angle α of the bent portion 25 formed by the extending portion 24 and the holding portion 40 is the upper surface of the rail bottom portion 92 and the rail abdomen. It is set to be larger than the opening angle θ with respect to 91 (α> θ).

As shown in FIG. 3, in a state where the conductor fixture 10 is mounted on the rail 90, the connecting portions 43 and 43 of the holding portion 40 abut on the rail abdomen 91. Thereby, the holding | maintenance part 40 is pushed back in the direction spaced apart from the rail belly part 91, and the extension part 24 is pushed up upwards. For this reason, the bending part 25 located in the extension end part of the extension part 24 will be in the state which does not contact the upper surface of the rail belly part 91 and the rail bottom part 92. FIG.
2 and 3, in this mounted state, the opening angle α of the bent portion 25 formed by the extending portion 24 and the holding portion 40 is reduced more than in the natural state (here, temporarily holding portion The angle at which the extension line of the 40 connecting portions 43 and the extension line of the extending portion 24 intersect was defined as α).
In addition, the opening angle β of the bent portion 27 formed by the end portion 22 of the gripping portion 20 and the extending portion 24 is in a state that is wider than the natural state.
The holding portion 40 sandwiches the conductors 81 and 82 between the concave portions 41 and 42 and the rail abdomen 91 by using an elastic force for the opening angles α and β of the bent portions 25 and 27 to return to the original angles. It has a structure to hold in.
Hereinafter, the elastic force that attempts to return the opening angle α to the original angle is referred to as “returning force of the holding portion 40”, and the elastic force that causes the opening angle β to return to the original angle is referred to as “returning force of the extending portion 24”. Let's say.

  In the state of FIG. 3, the upper concave portion 41 has a gap d1 formed between the inner bottom portion and the rail belly portion 91, and the lower concave portion 42 has a gap d2 formed between the inner bottom portion and the rail belly portion 91 ( d1 <d2). Therefore, the upper concave portion 41 can hold a conductor having an outer diameter of d1 or more, and the lower concave portion 42 can hold a conductor having an outer diameter of d2 or more. Therefore, the upper recess 41 is more suitable for holding a conductor having a smaller diameter.

FIG. 6 shows a state in which the conductor fixture 10 holds the conductor 81 having an outer diameter of d1 or more in the upper recess 41 and the conductor 82 having an outer diameter of d2 or more in the lower recess.
In this case, the conductor 82 is held in the lower concave portion 42 mainly by the restoring force of the extending portion 24. The extension portion 24 and the holding portion 40 are pushed upward by the conductor 82, but the holding portion 40 is pushed back to the rail abdomen 91 side by the restoring force of the holding portion 40, so that the conductor 81 is held in the upper concave portion 41. Is done.
Therefore, the two conductors 81 and 82 each have a sufficient holding pressure and are held well.

  As shown in FIG. 7, even when the conductor 81A larger than the conductor 81 (approximately the same as the conductor 82) is held in the upper concave portion 41, the conductor 82 has a restoring force of the extending portion 24, and the conductor 81A has a holding portion. Forty return force acts and it can hold | maintain favorable similarly to the case of FIG.

Further, as shown in FIG. 8, the conductor fixture 10 can hold a conductor 81 having an outer diameter d1 or more only in the upper concave portion 41.
In this case, the conductor 81 is favorably held in the upper concave portion 41 by the restoring force of the extending portion 24 and the restoring force of the holding portion 40.

Furthermore, as shown in FIG. 9, the conductor fixture 10 can hold a conductor 82 having an outer diameter of d2 or more only in the lower concave portion.
In this case, the conductor 82 is favorably held in the lower concave portion 42 mainly by the restoring force of the extending portion 24.

Moreover, since the holding | maintenance part 40 is formed in the rectangular frame shape as shown in FIG.4 and FIG.5, it has the rod-shaped parts 44 and 45 equivalent to a pair of short side in a rectangle. Each of the rod-like portions 44 and 45 is parallel to the rail longitudinal direction, and is located in the vicinity of the upper concave portion 41 and the lower concave portion 42.
Therefore, as shown in FIG. 10, even when holding the conductors 81B and 82B having an outer diameter less than d1 or d2 at which the sufficient holding pressure cannot be obtained in the upper concave portion 41 and the lower concave portion 42, the bind wire and the insulation lock ( Good holding can be performed by binding to the rod-like portions 44 and 45 with a binding band B such as a registered trademark of Heramanton Co.).
Even when the conductor 81 having an outer diameter of d1 or more is held in the upper recess 41 and the conductor 82 having an outer diameter of d2 or more is held in the lower recess 42, the binding band B is used to bind the rods 44 and 45, Needless to say, it may be held firmly.

[Technical effects of the embodiment]
In the conductor fixture 10 of this embodiment, since the holding portion 40 is provided with the two concave portions of the upper concave portion 41 and the lower concave portion 42, it is possible to hold the two conductors 81 and 82 up and down.
Thereby, it is not necessary to prepare a conductor fixing tool for each conductor, and it is possible to perform a conductor reinforcing fixing work in a short work time.
Moreover, even when there are few suitable places for attaching the conductor fixing tool, the reinforcing holding of the conductor can be ensured.

  Further, since the holding portion 40 of the conductor fixture 10 is formed so that the lower concave portion 42 is deeper than the upper concave portion 41, the outer diameter range of the conductor that can be held at least in the upper concave portion 41 is set. It can be secured widely and can hold various conductors.

Further, in the natural state, the entire holding portion 40 is inclined toward the rail abdomen 91 side, and the opening angle α of the bent portion 25 formed by the extending portion 24 and the holding portion 40 is the rail bottom portion on the holding portion 40 side. The opening angle θ between the upper surface of 92 and the rail abdomen 91 is set to be larger. Further, the holding portion 40 has a shape in which the bent portion 25 is slightly separated from the rail 90 in a state where the conductor fixture 10 is attached to the rail 90, that is, a shape that does not contact the upper surfaces of the rail abdomen 91 and the rail bottom 92. ing.
For this reason, the conductor fixture 10 can use both the return force of the holding portion 40 and the return force of the extending portion 24 as the holding pressure of the conductor, and the conductor 81, which has an outer diameter of the gaps d1 and d2 or less. When holding the 82 in the upper concave portion 41 and the lower concave portion 42, it is possible to apply an appropriate holding pressure to the respective conductors 81 and 82 and perform good holding. Further, even when the conductor 81 or 82 is held by only one of the upper concave portion 41 or the lower concave portion 42, good holding can be performed.

Moreover, since the conductor fixture 10 is entirely formed from a single metal wire having high rigidity, it is easy to manufacture.
And since the holding | maintenance part 40 is formed by shape | molding a metal wire in a rectangular frame shape, the rod-shaped parts 44 and 45 can be provided in proximity to the recessed parts 41 and 42. FIG. Thereby, it becomes possible to hold | maintain favorably with respect to the upper side recessed part 41 and the lower side recessed part 42 by restraining the conductor of a diameter smaller than an appropriate range to the rod-shaped parts 44 and 45. FIG. In addition, the conductors 81 and 82 having an appropriate outer diameter can be more firmly held by binding.

[Other Embodiments]
In the above embodiment, as shown in FIG. 3, the conductor fixing tool in which the connecting portion 43 of the holding portion 40 abuts on the rail abdomen 91 in a state where the conductor fixing tool 10 is mounted on the rail 90 is shown, but the present invention is not limited thereto. .
When the conductor fixture 10 is attached to the rail 90, the bent portion 25 may not be in contact with the rail 90 and any part of the holding portion 40 may be in contact with the rail abdomen 91.
For example, as shown in FIG. 11, in a state where the conductor fixture 10 is mounted on the rail 90, the conductor fixture 10 is formed in a shape in which the tip of the upper concave portion 41 of the holding portion 40 contacts the rail abdomen 91. Also good.
In the state where the conductor fixture 10 is not attached to the rail 90, the holding portion 40 rises from the extending portion 24 at the bent portion 25 at the lower end thereof, and as shown in FIG. The opening angle α of the bent portion 25 formed by the holding portion 40 is larger than the opening angle θ between the upper surface of the rail bottom portion 92 and the rail abdomen 91. In addition, as shown in FIG. 2, when the cross-sectional shape of the rail 90 is overlapped on the conductor fixture 10 simulating the use state, the holding portion 40 of the conductor fixture 10 is inclined toward the rail abdomen 91 side. .
Such a conductor fixture 10 of FIG. 11 also has the same effects as the conductor fixture 10 of the embodiment shown in FIG.

[Others]
In the conductor fixture 10, the case where the two concave portions 41 and 42 are formed in the holding portion 40 is illustrated, but many concave portions may be formed side by side in the holding portion 40. In that case, more conductors can be held.
In addition, as described above, when the number of concave portions is increased, it is desirable that the inner bottom portion be deeper as the concave portions arranged vertically are located on the lower side.

Moreover, although the case where the conductor fixture was formed with one wire was illustrated, it is not limited thereto. For example, a long strip-shaped metal plate may be bent so as to have the shape of FIG. 3 when viewed from the rail longitudinal direction. In that case, the expansion / contraction part can be formed so as to have a finely meandering wave shape when viewed from the rail longitudinal direction so as to be extendable / contractible.
Moreover, you may form and assemble each part of a conductor fixing tool from an individual member.
For example, the grip portion 20 may be configured with a member such as a C-type clamp.

DESCRIPTION OF SYMBOLS 10 Conductor fixture 20 Holding part 23 Extendable part 24 Extension part 25, 27 Bending part 40 Holding part 41 Upper side recessed part (recessed part)
42 Lower recess (recess)
43 connecting portion 44, 45 rod-like portion 81, 82, 81A, 81B, 82B conductor 90 rail rail 91 rail abdomen 92 rail bottom B binding band d1, d2 gap α opening angle of the bent portion formed by the extending portion and the holding portion ( (Opening angle between extension part and holding part)
θ Opening angle between the top of the rail bottom and the rail abdomen β Opening angle of the bent part formed by the end of the gripping part and the extension part

Claims (7)

A gripping part attached to the bottom side of the rail bottom of the rail, and gripping the rail bottom,
An extending portion extending from the gripping portion toward the rail abdomen side on the upper surface side of the rail bottom,
A bent portion that is bent up from the tip of the extending portion and holds the conductor; and
A rail rail conductor fixing tool, wherein a plurality of recesses for holding a conductor are arranged in the vertical direction in the holding portion.   2. The railroad rail conductor fixture according to claim 1, wherein the plurality of recesses are formed such that a recess is deeper toward a lower side.   3. The railroad conductor conductor fixture according to claim 1, wherein the holding portion is inclined toward the rail abdomen side. 4.   4. The railway rail conductor fixture according to claim 3, wherein an opening angle between the extension part and the holding part is larger than an opening angle between the upper surface of the rail bottom part and the rail abdomen.   When the conductor fixture is attached to the railroad rail, the extended end portion of the extension portion is not in contact with the rail bottom portion and the rail abdomen, and the holding portion is in contact with the rail abdomen. The railway rail conductor fixing tool according to claim 4, wherein:   The railroad conductor conductor fixture according to any one of claims 1 to 5, wherein the conductor fixture is entirely formed of an elastic wire.   The railway rail conductor fixture according to claim 6, wherein the holding portion is formed of the wire shaped into a rectangular frame shape.

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