JPH11144832A - Cable connecting device for railroad rail and its connecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable connecting device for a railroad rail which can be simply fixed to a railroad rail without requiring fixing by soldering, and its connecting method. SOLUTION: A cylindrical sleeve in which an end part of a cable 30 wired on a railroad rail 2 and a plate type compression terminal 20 with the sleeve provided at its one end are formed, while the cable is wired to the compression terminal 20 by compressing an outer periphery of the sleeve. This compression terminal 20 is fixed to a side wall surface of the railroad rail 12, without requiring soldering, by a fixing means which comprises a bolt and a nut and has a slackness preventative measure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection between an electric wire used for a railroad rail and a rail, and more particularly to a connection device for a railroad electric wire and an improved connection for simplifying the connection with an impedance bond conductor. About the method.

[0002]

2. Description of the Related Art On a railroad rail, a kind of transformer called an impedance bond is provided beside a railroad rail at an appropriate interval in order to separate an electric car return current and a track circuit current. Have been. The impedance bonds insulate the joints of the railroad rails (hereinafter referred to as rails) and are provided on the rails on both sides of the insulated portion, two in total, one each. These impedance bonds are connected to both parallel-arranged rails via electric wires called impedance bond conductors. Moreover, since two impedance bond conductors are wired and connected to one rail, it is obligatory to connect eight impedance bond conductors to one insulating portion of the rails arranged in parallel. .

A conventional connection of such an impedance bond conductor will be described with reference to the drawings. FIG. 6 is a perspective view showing a conventional railway rail wire connection device, and FIG. 7 is an exploded perspective view showing a part of FIG. As shown in FIG. 6, a railway rail electric wire connection device 1 showing connection between a conventional impedance bond conductor and a rail attaches an electric wire to an abdomen which is a side wall of a railway rail 2 as shown in FIG. A dedicated connection terminal called a rail bond terminal 4 is attached to a tip end of the impedance bond conductor 8 as an electric wire to be attached, and is soldered to a side wall of the rail. As shown in FIG. 7, this rail bond terminal 4
One end was formed in a triangular shape, and the other end of a rectangular plate provided with the triangular portion bent was provided with a cylindrical shape serving as an electric wire attaching portion to form a terminal 5. One end of a bundled wire formed in an Ω shape is joined to such a terminal 5 to form a rail bond terminal 4. In addition, the plate body of the terminal 5 forms a slight curvature in the width direction, and solder is adhered within the curvature, so that the rail is used as a dedicated component for joining the impedance bond conductor 8 and the rail 2. Bond terminals 4 are formed. Such a rail bond terminal 4 is to be welded and attached to the end of the impedance bond conductor 8 at the work site, and ignites an explosive in a dedicated device called a signal mold (not shown) to ignite the explosive and to connect the wire. By welding them together, they are integrated at the joint 6 shown in FIG.

[0004] The rail bond terminal 4 attached to the tip of the impedance bond conductor 8 is attached to the side wall of the railway rail 2. This mounting example will be described below. Impedance bond conductor 8 with rail bond terminal 4 attached
Is connected to the rail, a rail plating surface 3 is formed on the side wall of the rail 2 as shown in FIG. In this case, the rail-plated surface 3 is formed by polishing the mounting surface of the rail bond terminal 4 with an area larger than that of the terminal 5 using a rail polishing machine (not shown) and attaching solder to the polished surface. The terminal 5
Abutting one side of the triangle provided in the standing state at the tip of
The terminals 5 are arranged so that the plate surface is oblique to the rail plating surface. That is, one side of the triangle is used as a guide, and the lower side in the longitudinal direction of the terminal 5 contacts the rail plating surface to form a pocket with the rail and the terminal, and the solder is poured into the pocket to fix the two. As described above, since the terminal 5 is preliminarily soldered, the preliminarily soldered surface is disposed facing the rail plating surface, and both are fixed by soldering while being positioned by a jig or the like. .

[0005]

Since the above-described mounting of the impedance bond conductor 8 requires the rail bond terminal 4, the two must be welded together on site using a dedicated connection tool. There are drawbacks.
Further, if the rail bond terminal 4 is deformed, the soldering solder for soldering may flow down, so it is necessary to confirm and correct the shape before mounting. For the rail plating surface,
Since the jig must be mounted while being positioned so as not to move, a work such as mounting and removing the jig is required. The mounting of the rail bond terminal has detailed specifications and requires not only skill but also drawbacks such as vibration being applied when the train passes and falling off. Furthermore, after installation, it is necessary to thoroughly wipe off moisture and dirt with a rag or a rag cloth, and there are various drawbacks that a lot of troublesome work is required. The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a railroad rail wire connection device and a connection method thereof that do not require a rail bond terminal by soldering and that can be easily attached. I do.

[0006]

In order to solve the above problems, the present invention has the following arrangement. The connecting device for a railway rail electric wire according to claim 1 is provided with a tubular sleeve at one end thereof for attaching an end of the electric wire to be connected to the railway rail, and joining the rail to the rail connected to the sleeve. On the surface, a plate-shaped compression terminal provided with a mounting hole to the rail was formed. The hole provided in the compression terminal was also formed in a railroad rail, and was attached to the rail using a fixing member, thereby forming a railroad rail wire connection device. The connecting device for a railway rail electric wire according to claim 2 is provided with a tubular sleeve at one end thereof for inserting an end portion of an electric wire made of an impedance bond conductor for the purpose of connecting to a railway rail. A plate-shaped compression terminal having a conductive coating and a mounting hole for the rail was formed on the mounting surface to the rail connected to the sleeve. The hole provided in this compression terminal is also formed in the railroad rail, and the bolt provided with a countersunk disc spring on the head side is fixed with a lock nut, thereby fixing the railroad rail and the compression terminal. And a connection device for electric wires for railway rails. The method for connecting a railway rail electric wire according to claim 3, wherein a rail plating surface is formed by polishing a side wall surface of the railway rail to which the electric wire is joined and solder is applied thereto, and a tube serving as a contact point of the electric wire. An end of an electric wire to be joined is inserted into the sleeve of a plate-shaped compression terminal having a mounting hole at its joint surface, and the outer periphery of the sleeve is disposed around the sleeve. By compressing, a terminal wiring step of joining the electric wire and the compression terminal, and a rail drilling step of forming a hole in the rail plating surface of the railway rail so as to match the mounting hole provided in the terminal, The hole formed in the hole making step and the hole provided in the compression terminal are made to coincide with each other, and a terminal attaching step of attaching the rail and the compression terminal with a fixing member having a loosening prevention measure, Each process work By Ryosuru, it was how to connect wires for railway rails.

[0007]

The electric wire connected to the rail can be bolted without soldering, thereby improving the reliability against vibrations caused by passing the train and preventing the connection terminals from falling off. Not only is it free from detailed specifications and troublesome work by soldering, but also welding work between electric wires and work requiring skill are not required.

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a railway rail wire connection device of the present invention, and FIG. 2 is an exploded perspective view of FIG. As shown in FIG. 1, a railway rail wire connection device 10 according to the present invention.
A compression terminal 20 for attaching an electric wire 30 to an abdomen which is a side wall of the railway rail 12, an electric wire 30 connected to the compression terminal, and a fixing member 34 for attaching the compression terminal 20 with the electric wire to the railway rail 12. Consists of As shown in FIG. 2, the compression terminal 20 has a wire 30 attached to one end thereof and a fixing member 34 such as a bolt or a nut via a hole 15 provided in the rail 12. The railway rail 12 and the compression terminal 20, and the electric wire 30 and the fixing member 34 will be described in more detail.

The railway rail 12 is a railway line such as a train, and has a rail plating surface 14 formed on a side wall thereof. The rail plating surface 14 is formed by polishing the wall surfaces of electric wires and railroad rails to remove rust and dirt, and forming a plating layer made of a solder layer or the like using flux or brazing. The rail plating surface 14 is formed to be larger than the plate body of the compression terminal 20 to be mounted, and the mounting hole 15 is formed so that the compression terminal is located in the rail plating surface.

A compression terminal and an example of mounting the compression terminal will be described with reference to the drawings. FIG. 3 is a perspective view showing the mounting surface side of the compression terminal shown in FIG. 2, and FIG. 4 is an explanatory view showing the mounting of the railroad rail and the compression terminal. The compression terminal 20 includes a plate 22 made of a rectangular and thick plate, and a cylindrical sleeve 25 provided at one end of the plate.
And both are integrally formed by a conductive material. A tin plating layer 23 as a conductive coating is formed on a mounting surface of the plate body 22, and a mounting hole 24 is provided in a center portion thereof. Such a compression terminal 20
The electric wire 30 is attached to the sleeve 25. As an example of attaching the electric wire 30, the end of the covered electric wire is exposed,
Inserting the conductor into the sleeve and pressing the outer periphery of the sleeve with a hydraulic crimping tool (not shown) to form a part of the sleeve into a hexagonal shape, thereby firmly fixing the sleeve and the electric wire. This is a task that can be relatively easily performed at the work site. Electric wire 3 connected to compression terminal 20
0 is provided on the insulating portion of the railway rail as described above,
The impedance bond conductor 32 extends from the connection terminal of the impedance bond, and is an electric wire composed of a covered stranded wire.

The compression terminal 20 to which the electric wire 30 as the impedance bond conducting wire 32 is connected and connected is attached to the railway rail 12 by a fixing member 34 as shown in FIG. One embodiment of this fixing will be described below. A hole 15 provided in the rail plating surface of the rail 12 and a compression terminal 2
The bolts 35 with the disc springs 36 inserted on the head side thereof are inserted into these holes while aligning the holes 24 on the tin plating layer 23 side provided at 0. A washer 37 made of a pressure plate is inserted into a tip end of a bolt 35 protruding to the back side of the rail 12, and a lock nut 38 is attached. The lock nut 38 is composed of a pair of nuts, and one of the nut seating surfaces is provided with a projection having a conical outer shape. The nut is provided with a slot in which the protruding body can be inserted in a fitted state, and the conical surface is joined to the slot provided in the other nut, and both nuts are united to prevent the nut from loosening. And a double nut having a means for preventing loosening.

According to the railway rail electric wire connecting device thus constructed, similarly to the conventional example, the rail plating surface is formed with the rail plating surface, and the tin plating layer is also formed with the compression terminal mounting surface. As a result, the electrical contact is sufficient, and the mounting is performed by the fixing means having a measure for preventing loosening, so that there is no need to worry about the terminal coming off. Furthermore, since rail bond terminals that are fixed by soldering are not used for railroad rails, stable quality is obtained with little variation in mounting quality due to the quality of soldering. Since screwing does not require skill, it can be performed by anyone, and cleaning after soldering is unnecessary. Also, a jig for positioning the terminals and temporarily fixing is used for the soldering. However, according to the present invention, it is a simple operation only to make a hole in the railroad rail. In the conventional rail bond terminal, the electric wire provided on the terminal and the impedance bond conductor were connected by igniting an explosive and welding the electric wires to each other in a signal mold device which is a dedicated tool. However, in the present invention, since the end of the impedance bond conductor is simply inserted directly into the sleeve of the compression terminal and compressed, the connection can be easily performed without danger. The rail rail wire mounting device described above has been described as an example of connection of impedance bond conductors. However, it is needless to say that it can also be applied to mounting of rail bonds connected to seams of each rail. This is an effective connection for connecting to the rail.

The method for connecting electric wires for railway rails according to the present invention will be described with reference to the drawings. FIG. 5 is a process chart showing a method for connecting electric wires for railway rails of the present invention. As shown in FIG. 5, a method 40 for connecting electric wires for railway rails includes a rail plating surface forming step 42 for forming a plated surface on railway rails.
And a terminal wiring step 44 for connecting an electric wire to a compression terminal to be attached to the rail plating surface formed in this forming step.
And a rail drilling step 46 for forming a mounting hole in a railway rail in the same manner as the mounting hole provided in the compression terminal, and a terminal mounting for mounting the compression terminal through the hole provided in the rail drilling step. It comprises step 48, and each of these steps will be described in more detail.

In the step 42 of forming the rail plating surface, as shown in FIG. 2, the side wall surface which is the electric wire connection portion of the railroad rail 12 is polished with a grinder or other polishing machine to remove rust and dirt. Drop it. This is a step of forming a plating layer made of a solder layer or the like using a flux or a braze on the polished surface to form a rail plating surface 14 for maintaining a good electrical connection. The rail plating surface 14 is formed to be larger than the shape of the compression terminal to be attached, and the surface is formed as a smooth flat surface.

The terminal wiring step 44 is a step of connecting and wiring the electric wire 30 as the impedance bond conductor 32 to the compression terminal 20 to be attached to the railroad rail as shown in FIG. The electric wire 30 is covered, the coating is removed to expose the tip, and the exposed core wire is inserted into the cylindrical sleeve 25 provided on the compression terminal 20.
In this state, when the outer periphery of the sleeve 25 is compressed by a hydraulic crimping tool (not shown), a part of the sleeve is compressed and deformed into a hexagon, so that the electric wire 30 and the compression terminal 2 are compressed.
0 is connected to complete the wiring.

The rail drilling step 46 is a step of forming the same hole as the hole 24 provided in the plate portion of the compression terminal 20 shown in FIG. 3 on the rail plating surface 14 of the rail 12.
The rail plating surface 14 is provided with an embossing for positioning so that holes are formed at the same intervals as the holes provided in the compression terminals, or the compression terminals to be attached after drilling one hole in the railway rail. The hole may be formed by any method, for example, by providing a hole by actual matching.

The terminal mounting step 48 includes, as shown in FIG. 4, a hole 15 formed in the rail plating surface 14 of the rail 12.
And a bolt or a nut as a fixing member 34 so that the hole 24 provided in the compression terminal 20 coincides with the hole 24.
Attach both. A disc spring 36 is disposed on the bolt 35 of the fixing member to prevent loosening, and a lock nut 38 disposed in series is used, so that the nut is prevented from rotating and is further firmly fixed. It is a process. Through the steps described above, the electric wire for railway rails of the present invention is connected.

[0018]

As described above, according to the present invention, the wiring of the electric wire for a railroad rail is provided with a terminal which can be fixed by a bolt and a nut in consideration of the prevention of loosening as a fixing means without soldering the terminal. The following effects were able to be obtained by using. In other words, there is no accident that the terminals are peeled off and fall off due to the vibration due to the passage of the train, and the reliability is improved and the repair work due to the fall is not required. In order to connect the wire portion of the rail bond terminal by welding to the tip of the wire of the conventional example, a dangerous work using a special welding device was performed, but in the present invention, the wire is connected to the terminal. Since it only needs to be inserted into the sleeve and compressed, there is no danger in the work and the connection can be made easily. For mounting rail rails and terminals,
Since the soldering work was eliminated, there were significant effects such as being freed from detailed specifications and precautions, and being able to perform work without requiring skill.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a railway rail wire connection device of the present invention.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a perspective view showing a mounting surface side of the compression terminal shown in FIG. 2;

FIG. 4 is an explanatory view showing attachment of a rail and a compression terminal.

FIG. 5 is a process chart showing a method for connecting electric wires for railway rails of the present invention.

FIG. 6 is a perspective view showing a conventional railway rail wire connection device.

FIG. 7 is an exploded perspective view showing a part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Railway rail wire connection device 12 Rail rail 14 Rail plating surface 20 Compression terminal 25 Sleeve 30 Electric wire 32 Impedance bond conductor 34 Fixing member 35 Bolt 36 Disc spring 38 Lock nut 40 Railway rail wire connection method 42 Rail plating surface Forming process 44 Terminal wiring process 46 Rail drilling process 48 Terminal mounting process

Claims (3)

[Claims] An electric wire to be connected to a railroad rail, a plate-shaped compression terminal having a cylindrical sleeve serving as a contact by inserting the electric wire at one end thereof, and having a mounting hole at a joint surface thereof; A connecting device for a railway rail electric wire, comprising a fixing member fixed to the railway rail through a mounting hole provided in the compression terminal. 2. An electric wire made of an impedance-bonded conductor connected to a railroad rail and a tubular sleeve into which an end of the electric wire is inserted are disposed at one end thereof, and are integrated with the sleeve to make the joint surface conductive. Along with painting, this joint surface is fixed to the railway rail through a plate-shaped compression terminal having a mounting hole formed therein, and a mounting hole provided in the compression terminal. And a fixing member used in combination with a bolt provided with a locking disc spring and a lock nut for tightening the bolt. 3. A step of forming a rail plating surface for polishing a side wall surface of a railroad rail serving as a connection portion of an electric wire and applying solder to the polished portion, and a step of forming a cylindrical sleeve serving as a contact point of the electric wire. The end of the electric wire to be joined is inserted into the sleeve of the compression terminal having a mounting hole at the joint surface, and the outer periphery of the sleeve is compressed. A terminal wiring step of joining the compression terminal, a rail drilling step of forming a hole in the rail plating surface of the railway rail so as to match the mounting hole provided in the compression terminal, A method of connecting electric wires for railroad rails, comprising: a terminal mounting step of mounting the rail and the compression terminal with a fixing member having a hole and a hole provided in the compression terminal and having a measure for preventing loosening.