JP3407822B2 - Connection structure for rigid train lines - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a rigid electric power line that is laid parallel to a track for supplying electricity to a running train or the like.

[0002]

2. Description of the Related Art As a conventional rigid electric power line connection structure,
8 and 9, which is provided with a pair of side opening-shaped longitudinal recesses a, between the ends of pedestals b, b, in which longitudinal recesses a, a are provided. The pair of joint splicers c, c fitted from both sides thereof are caulked by the caulking fastener d so that the upper and lower inner surfaces e, f of the longitudinal recess a are straight up and down g in the longitudinal direction of the joint splicer c. , H were pressure-welded and connected.

[0003]

However, as shown in FIG. 10, when the connection is made without the ends of the bases b and b being held horizontally, in the conventional joint splicer c, the base b generated by suspension is generated. , B is difficult to correct within a permissible range (i.e., horizontal correction), and a wire separation occurs between the pantograph and the train line during current collection, which adversely affects current collection performance. .

Therefore, the present invention provides a connection structure for a rigid electric power line which can reduce the flexure of the gantry, prevent the pantograph from being separated from the electric power line at the time of collecting electric current, and improve the electric current collecting characteristic. To aim.

[0005]

In order to solve the above problems, the present invention has a structure in which the ends of a gantry are connected to each other by a joint splicer, and the gantry has a flange portion at its upper end, It has an ear mounting bulge at the lower end and has a shape in which the flange and the ear mounting bulge are connected by a web, and a pair of lateral sides is formed by the flange, the web and the ear mounting bulge. An opening-shaped longitudinal recess is formed, and a pair of joint splicers fitted into the longitudinal recess from both sides are pulled together by caulking fasteners to pull the upper and lower inner surfaces of the longitudinal recess into the joint splicer. di pressed against the wedge-shaped at the upper and lower pressure section, as well as connecting the ends cross the cradle, the upper and lower contact portion of the joint splicer, of the pair
A bulging portion for applying an upward preload for bending correction is formed at the end of the gantry by pulling the joint splicer .

Further, the structure is such that the ends of the gantry are connected to each other by a joint splicer, and the gantry has a flange portion at the upper end and an ear attachment bulge portion at the lower end, and the flange portion and The ear mounting bulging portion is connected by a web, and the flange portion, the web and the ear mounting bulging portion form a pair of side opening-shaped longitudinal recesses, and the longitudinal recesses are formed. The pair of joint splicers fitted from both sides to each other by caulking with a fastener, and the upper and lower inner surfaces of the longitudinal recess are pressed into a wedge shape at the upper and lower press contact portions of the joint splicer to form a wedge shape. The pair of joint splicers are attracted to each other at the central portion of the upper press-contact portion that connects the end portions to each other and press-contacts the upper inner surface of the longitudinal recess.
Thus, a bulge portion for applying an upward preload for bending correction is formed at the end of the gantry.

Further, the structure is such that the ends of the gantry are connected to each other by a joint splicer, and the gantry has a flange portion at the upper end and an ear attaching bulge portion at the lower end, and the flange portion The ear mounting bulging portion is connected by a web, and the flange portion, the web and the ear mounting bulging portion form a pair of side opening-shaped longitudinal recesses, and the longitudinal recesses are formed. The pair of joint splicers fitted from both sides to each other by caulking with a fastener, and the upper and lower inner surfaces of the longitudinal recess are pressed into a wedge shape at the upper and lower press contact portions of the joint splicer to form a wedge shape. The ends of the pair of joint splicers are attracted to both ends of the lower press-contact part that connects the ends to each other and press-contacts the lower inner surface of the longitudinal recess.
Thus, a bulge portion for applying an upward preload for bending correction is formed at the end of the gantry.

Furthermore, the longitudinal dimension of the bulging portion is 30 to 35 mm.
And the total height of the bulging portion was set to 0.15 to 0.2 mm.

[0009]

[Function] When the ends of the gantry are connected by a pair of joint splicers in the unsuspended state in which no load is applied, the bulging portions are recessed in the longitudinal direction of the gantry by pulling the joint splicers together. Will be pressed locally.

When the pedestal is suspended from this connection state, the longitudinal recess is pressed against the bulging portion due to the bending of the pedestal end, and an upward preload acts, whereby the bending is reduced, The ends of the adjacent pedestals are maintained in a horizontal straight line.

Further, even if the ends of the gantry are connected by joint splicers without being held horizontally in the suspended state, the bulging portions are pressed against the longitudinal recesses due to the pulling of the joint splicers. Upward preload is applied, and the bending of the gantry is corrected within an allowable range.

[0012]

EXAMPLES The present invention will be described in detail below with reference to examples.

In the embodiment shown in the sectional view of FIG. 1, 1 is a trolley wire, made of copper or a copper alloy, and 2 is a predetermined total length--
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The pedestal 2 has a flange portion 3 attached to an insulator (not shown) at the upper end and an ear attachment bulge portion 4 at the lower end, and a web 5 connects them. Therefore, they are integrally formed by an extrusion mold material or a subsequent cold drawing process.

Reference numeral 6 denotes an ear for holding the trolley wire 1 on the pedestal 2, which is made of copper or a copper-based alloy and is manufactured by an extrusion mold material or a subsequent cold drawing process.

Reference numeral 7 denotes an ear fastener composed of a hexagon socket button bolt 7a, a tubular nut 7b, etc., which is provided in the bulging portion 4 of the gantry 2 in a direction orthogonal to the gantry center plane P. The long trolley wire 1 is fixed by inserting the ear 6 on only one side or the pair of ears 6, 6 on both sides (not shown) inserted into the hole 8 to the bulging portion 4.

Further, the lower surface of the flange portion 3, the web 5 coinciding with the center plane P, and the bulging portion 4 adjacent to the web 5 are provided.
Joint splicers 10, 10 made of copper or copper alloy are fitted into the pair of side opening-shaped longitudinal recesses 9, 9 formed on the upper surface of the both sides thereof.

As shown in FIGS. 1 and 2, the joint splicer 10 is arranged so as to straddle the ends of the mounts 2 and 2, and the mounts 2 are sequentially connected and arranged.

Reference numeral 11 is a caulking fastener, which is composed of a pin material 11a having an independent concave-convex strip on its outer periphery, a collar 11b having a hole with an independent concave-convex portion which is caulked into the pin material 11a, etc. And the hole of the web 5 at the end of the gantry 2 are inserted in a skewered shape, and the pair of joint splicers 10 and 10 are strongly attracted and fixed.

In this way, the pair of joint splicers
Pull the 10 and 10 together with the caulking fasteners 11 and pull in the longitudinal recess 9
The upper and lower inner surfaces of the joint splicer 10 are pressure-contacted with the pressure-contact portions 14 and 15 which are the upper and lower surfaces of the joint splicer 10 to connect the ends of the pedestals 2 and 2 to each other. The end faces of the pedestals 2 and 2 are preferably brought into contact with each other.

Specifically, inclined surfaces 12 and 13 are formed near the center plane P of the upper and lower inner surfaces of the longitudinal recess 9, and the pair of joint splicers 10 and 10 are pulled together by caulking fasteners 11 for connection. In this state, the upper and lower inclined surfaces 12 and 13 are pressed into contact with the upper and lower pressure contact portions 14 and 15 in a wedge shape.
Upper and lower inclined surfaces 17 and 18 are formed near the center plane P of 4 and 15.

The web 5 and the joint splicer
A small gap W is left between the inner surface of 10 and
Wedge effect (that is, the joint splicers 10, 10 are wedge-shaped pushed into the longitudinal recesses 9, 9 of the gantry 2 from both sides to absorb the manufacturing dimensional error of the inclined surfaces 12, 13, 17, 18; Being able to stably fix) should not be hindered.

In the central portion of the upper pressure contact portion 14, a flat shape is locally applied to the upper inner surface of the longitudinal recess 9 to apply an upward preload F for bending correction to the end of the gantry 2. Bulge 16
However, the bulging portion 16 is formed so as to straddle both upper inner surfaces of the longitudinal recesses 9, 9 of the pedestals 2, 2. The bulging portion 16 may be at least on the side of the inclined surface 17. The lower press contact portion 15 is formed straight in the longitudinal direction.

The bulging portion 16 acts as shown in FIG. 3, for example, when the ends of the pedestals 2 and 2 are connected to each other in an unsuspended state in which no load is applied. That is, when the joint splicer 10 is pulled, the end of the upper inner surface of the longitudinal recess 9 is pressed by the bulging portion 16, and the end of the flange 3 of the pedestal 2 is slightly bent upward. It becomes the shape to do.

When the pedestals 2 and 2 are suspended from the connection state shown in FIG. 3, the end of the upper inner surface of the longitudinal recess 9 is bent to the end of the bulging portion 16 due to the bending of the end of the pedestal 2 caused by its own weight or the like. And the lower inner surface of the longitudinal recess 9 is in pressure contact with the end of the pressure contact portion 15 of the joint splicer 10, whereby an upward preload F (see FIG. 2) acts (generates). , The downward load R that causes bending is reduced, and
The ends of the can be maintained in horizontal alignment.

By the way, in the mounting work of the rigid train line, first, the pedestal 2 is mounted in a suspended manner on the ceiling or wall of the tunnel through an insulator (not shown), and then as shown in FIGS. 1 and 2. , Joint splicers 10 and 10 and caulking fasteners 11
There is a case where it is connected to the adjacent pedestal 2 in this case, but in this case, even if the pedestals 2 and 2 are connected without being bent and held horizontally, the joint splicers 10 and 10 pull the two together. In addition to the wedge effect described above, the bulging portion 16 locally press-contacts the upper inner surface of the longitudinal recess 9 to apply an upward preload F, and the bending of the pedestal 2 is corrected by the upward movement to reduce it. And can be kept within the allowable range.

In order to most effectively exert the bending correction effect of the bulging portion 16, the lengthwise dimension T of the bulging portion 16 is 30 to 30.
35mm, and the overall height (step) of the bulge 16 is 0.15 ~
Set to 0.2mm. If it is smaller than this value, the bending of the gantry 2 cannot be suppressed within the allowable range. On the other hand, if it exceeds this value, the correction effect becomes excessive and conversely warpage may occur.

Further, the total length L of the joint splicer 10
Is set to, for example, 200 to 280 mm, preferably 210 to 260 mm, and particularly preferably 220 to 240 mm. If it is less than this value, the strength and rigidity of the ends of the gantry 2 tend to be insufficient, while if it exceeds this value, the weight increases and the material is wasted.

The bulging portion 16 is a joint splicer.
10 is formed by welding or adhering a separate metal plate piece having a predetermined width and thickness. Alternatively, the bulging portion 16 is formed by leaving the central portion of the upper surface of the joint splicer 10 and cutting and removing the other upper surface portions by a predetermined depth.

Next, FIGS. 4 and 5 show another embodiment in which the upper pressure contact portion 14 is formed straight in the longitudinal direction and the lower inner surface of the longitudinal recess 9 of the joint splicer 10 is pressure contacted. The case where the bulging portions 16 and 16 for applying the upward preload F for bending correction to the ends of the gantry 2 are formed at both ends of the pressure contact portion 15 is shown, and other configurations are the same as those in the previous embodiment. Is.

The bulging portion 16 in this case also has the same function and effect as in the previous embodiment, and as shown in FIG. 6, the ends of the pedestals 2 and 2 are connected to each other in an unsuspended state in which no load is applied. In this case, when the joint splicer 10 is pulled, the end of the bulging portion 4 of the pedestal 2 is slightly bent upward, and when the pedestals 2 and 2 are suspended from this connection state, The lower inner surface of the direction recess 9 is in pressure contact with the bulging portions 16 and 16, and the upper inner surface of the longitudinal recess 9 is in pressure contact with the central portion of the pressure contact portion 14 of the joint splicer 10, so that an upward preload F ( (See FIG. 5) acts to reduce the downward load R that causes the bending, and the ends of the adjacent pedestals 2 and 2 can be maintained in a horizontal straight line.

Even if the ends of the pedestals 2 and 2 are bent and connected without being held horizontally, the pulling of the joint splicer 10 causes the bulging portion 16 to be recessed in the longitudinal direction in addition to the above-mentioned wedge effect. It is possible to locally press-contact the lower inner surface of the plate 9 and apply an upward preload F to correct the bending of the pedestal 2 by upwardly reducing it, thereby suppressing it within an allowable range.

For the same reason as in the previous embodiment, the bulging portion 16
The longitudinal dimension T of the bulge 16 is set to 30 to 35 mm.
Is set to 0.15 to 0.2 mm, and the total length L of the joint splicer 10 is set to, for example, 200 to 280 mm, preferably 210 to 260 mm, and particularly preferably 220 to 240 mm. Further, the bulging portion 16 may be at least on the side of the inclined surface 18.

Next, FIG. 7 shows another embodiment, in which the upper and lower pressure contact portions 14 and 15 of the joint splicer 10 are bulged portions 16 ...
Is shown, and other configurations are the same as in the previous embodiment. That is, the center of the press contact portion 14 that press-contacts the upper inner surface of the longitudinal recess 9 and the both ends of the press contact portion 15 that press contacts the lower inner surface of the longitudinal recess 9 are respectively bent at the ends of the gantry 2 for straightening. The bulging portions 16 ... Which apply the upward preload F for use are formed.

Also in this case, the same effect as the previous embodiment is obtained, and for the same reason as in the previous embodiment, the longitudinal dimension T of the bulging portion 16 is set to 30 to 35 mm, and the bulging portion 16 has the same size. Overall height from 0.15
0.2 mm, and the total length L of the joint splicer 10 is, for example, 200 to 280 mm, preferably 210 to 260 mm.
, Particularly preferably 220 to 240 mm. Further, the bulged portions 16 ... May be at least on the inclined surfaces 17 and 18 side.

[0036]

The present invention has the following effects due to the above configuration.

Even if the pedestals 2 and 2 are connected without being held horizontally, the bending of the pedestal 2 caused by suspension is corrected upward by the bulging portion 16 to reduce it to an allowable range. be able to.

Therefore, it is possible to prevent the pantograph from being separated from the train line at the time of collecting current, and to improve the current collecting characteristic.

Further, the connection work can be carried out without impairing the advantages of the conventional rigid electric power line connection structure such as ease of connection, quickness, electrical characteristics and mechanical characteristics.

[Brief description of drawings]

FIG. 1 is a sectional front view showing an embodiment of the present invention.

FIG. 2 is a side view of an essential part showing a connected state of a gantry.

FIG. 3 is a simplified diagram illustrating an operation.

FIG. 4 is a sectional front view showing another embodiment.

FIG. 5 is a side view of an essential part showing a connected state of the gantry.

FIG. 6 is a simplified diagram illustrating an operation.

FIG. 7 is a sectional front view showing another embodiment.

FIG. 8 is a sectional front view of a conventional example.

FIG. 9 is a side view of a main part of a conventional example.

FIG. 10 is a simplified explanatory diagram of a conventional example.

[Explanation of symbols]

2 mounts 3 Flange part 4 Ear mounting bulge 5 web 9 Longitudinal recess 10 joint splicer 11 Caulking fastener 14 Pressure contact part 15 Pressure contact part 16 bulge F preload T longitudinal width H total height

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Koichi Kudo 7-12-301 Otani-cho, Nishinomiya-shi, Hyogo Prefecture (72) Inventor Katsuji Nakajima 8 Nishino-cho, Higashi-Mukojima, Amagasaki-shi, Hyogo Mitsubishi Electric Cable Industries Co., Ltd. 72) Inventor Kenichi Iwase 8 Nishinomachi, Higashimukaijima, Amagasaki City, Hyogo Prefecture, Mitsubishi Electric Cable Co., Ltd. (56) Reference JP 5-270301 (JP, A) JP 7-9896 (JP, A) Actual Kaihei 6-886 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60M 1/30

Claims (4)

(57) [Claims] 1. A structure in which ends of a gantry are connected to each other by a joint splicer, the gantry having a flange portion at an upper end and a bulge portion for attaching an ear at a lower end, and the flange portion and The ear mounting bulging portion is connected by a web, and the flange portion, the web and the ear mounting bulging portion form a pair of side opening-shaped longitudinal recesses, and the longitudinal recesses are formed. The pair of joint splicers fitted from both sides to each other by caulking with a fastener, and the upper and lower inner surfaces of the longitudinal recess are pressed into a wedge shape at the upper and lower press contact portions of the joint splicer to form a wedge shape. Connect the ends to each other, and attach the pair of wires to the upper and lower pressure contact parts of the joint splicer.
A connecting structure for a rigid electric train line, characterized in that a bulging portion for imparting an upward preload for bending correction is formed at an end portion of the gantry by pulling a joint splicer . 2. A structure in which the ends of the gantry are connected to each other by a joint splicer, the gantry having a flange portion at the upper end and an ear attachment bulge portion at the lower end, and the flange portion and The ear mounting bulging portion is connected by a web, and the flange portion, the web and the ear mounting bulging portion form a pair of side opening-shaped longitudinal recesses, and the longitudinal recesses are formed. The pair of joint splicers fitted from both sides to each other by caulking with a fastener, and the upper and lower inner surfaces of the longitudinal recess are pressed into a wedge shape at the upper and lower press contact portions of the joint splicer to form a wedge shape. The bending correction is performed on the pedestal end by pulling the pair of joint splicers to the central part of the upper press contact part that connects the end parts to each other and presses the upper inner surface of the longitudinal recess. Formed a bulge that gives an upward preload for Connection structure rigid catenary characterized and. 3. A structure in which the ends of the gantry are connected to each other by a joint splicer, the gantry having a flange portion at the upper end and an ear attachment bulge portion at the lower end, and the flange portion and The ear mounting bulging portion is connected by a web, and the flange portion, the web and the ear mounting bulging portion form a pair of side opening-shaped longitudinal recesses, and the longitudinal recesses are formed. The pair of joint splicers fitted from both sides to each other by caulking with a fastener, and the upper and lower inner surfaces of the longitudinal recess are pressed into a wedge shape at the upper and lower press contact portions of the joint splicer to form a wedge shape. Both ends are connected to each other, and both ends of the lower press-contact part that press-contacts the lower inner surface of the longitudinal recess are attracted by the pair of joint splicers to bend the end of the gantry. Formed a bulge that gives an upward preload for Connection structure rigid catenary characterized and. 4. The rigid trainline connection according to claim 1, wherein the dimension of the bulging portion in the longitudinal direction is set to 30 to 35 mm and the total height of the bulging portion is set to 0.15 to 0.2 mm. Construction.