JPH11192863A - Catenary wire supporting device in air joint section in tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the interior of a tunnel with an air joint section where catenary wires in parallel with each other in a small space located at a tunnel roof part are supported together compactly. SOLUTION: Both end parts of a catenary wire supporting device 10 are mounted laterally on the roof part Tn of a tunnel. A supporting laver 3 is fixed generally horizontally to a mounting fixture 1 attached to the tunnel roof part Tn through an insulator 2. Two fixtures 4 and 4 for supporting catenary wires M1 and M2 extended in parallel with each other are mounted on the supporting lever 3. Two pairs of brackets 5 and 5 extended in longitudinal direction as installed laterally in the extending direction of the catenary wires M1 and M2. A supporting pulley 6 is supported by the brackets 5. A departure preventing member 7 is installed at the center part of the supporting fixture 4. The departure preventing member 7 stops the catenary wires M1 and M2 from being departed from the supporting pulleys 6 and 6. The catenary wire supporting device 10 is installed at the center part of an air joint district.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel connection for providing an air joint section for absorbing expansion and contraction of a train line and a suspension line in a narrow space of a ceiling portion of a tunnel in the middle of a train line. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension line support device for collectively supporting suspension lines between train lines.

[0002]

2. Description of the Related Art Since a train line expands and contracts due to a change in temperature such as air temperature, it is necessary to absorb the expansion and contraction to prevent loosening and excessive tension. For this purpose, the train line is divided into predetermined lengths, and each end is held down via a pulling device. Then, as shown in FIGS. 10 and 11, a parallel section (air joint section) is provided between the ends of the train lines adjacent to the divided train line, and both ends are electrically connected to each other. Then, by continuously shifting the pantograph of the train Tr from the train line T1 to the train line T2 almost at the center of this section, continuous current collection is ensured. Conventionally, such an air joint section of a train line cannot be provided in a narrow space in a tunnel, but is provided outside the tunnel.

[0003]

In the above conventional method,
An air joint section cannot be provided on a train line with continuous tunnels such as mountainous areas. Therefore, in such a section, there is a problem that expansion and contraction of a train line or the like cannot be sufficiently absorbed. Accordingly, an object of the present invention is to provide a compact suspension line support device for an air joint section in a tunnel that collectively supports parallel suspension lines in a narrow space of a tunnel ceiling.

[0004]

In order to solve the above problems, in the first invention, a plurality of suspension lines M1 for supporting two parallel train lines T1 and T2 in an air joint section in a tunnel are provided. , M2 collectively support the supporting rods 3, 13 in the tunnel ceiling Tn at a predetermined electrical insulation distance from the ceiling surface via the insulator 2 on the ceiling Tn of the tunnel. , This support rod 3, 1
3, the rotatable pulleys 6, 16, 26, 27 are supported, and the suspension lines M1, M2 are respectively movably hung in the direction of extension. In the second invention, the support rod 1
3 is provided with an upper and lower step portion 13b, and a pulley 16 which is rotatable in a vertical direction is provided in the lower step portion, and a suspension line M2 for supporting one of the train lines T2 is movable in the extending direction. A pulley 26 is provided on the upper stage of the support rod so as to be rotatable in the lateral direction, and a suspension line M1 for guiding the other train line T1 to the side is sent movably in the guide direction. Multiply,
The suspension lines M1 and M2 having different vertical positions are collectively supported. In the third aspect, the one end of the support rod 13 is provided with a curved metal fitting 8 for holding the train line T2 from the lateral direction.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 10 denotes a suspension line support device applied to support the suspension lines M1 and M2 at an intermediate portion of the joint section. As shown in FIG.
Both ends of the suspension line support device 10 are connected to the tunnel ceiling Tn.
Is mounted laterally by the mounting bracket 1. The mounting bracket 1 has a difference in vertical position between the base portions 1a on both sides where the anchor bolts are driven, along the curved surface of the tunnel ceiling portion Tn. The upper end of the insulator 2 is attached to the mounting brackets 1 and 1. The insulator 2 is composed of two units,
It is supported almost vertically.

A support rod 3 is bolted substantially horizontally between the lower ends of the support insulators 2 and 2. The support rod 3 has a horizontal plate portion 3b for bolting the support insulator 2 to both ends of a steel pipe 3a.

On this support rod 3, a parallel suspension line M
Two support fittings 4 for supporting M1 and M2, respectively, are provided. As shown in FIGS. 3 and 4, the support bracket 4 is formed of a metal plate material bent in a substantially U-shaped cross section so as to straddle the steel pipe 3a of the support rod 3, and the opposing side surfaces are supported by bolts 4a. It is locked in.

[0008] Two pairs of brackets 5, 5 extending in the front-rear direction in the direction of extension of the suspension wire M 1 (M 2) are provided on the support fitting 4 in the lateral direction. Bracket 5
Are located at the same height.

A support pulley 6 is rotatably supported on the bracket 5. The support pulley 6 is placed and received so that the suspension line M1 (M2) can be freely sent in the extending direction.

A T-shaped detachment preventing member 7 is provided upright at a central portion on the support fitting 4. The detachment preventing member 7 is provided between the support pulleys 6 and 6 and a suspension line M1 (M
2) It has a horizontal pin 7a that is positioned above and that is orthogonal to the extending direction to prevent the suspension line M from coming off the pulley 6.
In addition, the distance from the support rod 3 and each member attached thereto to the tunnel ceiling surface Tn is set to be 250 mm or more in order to secure necessary electric insulation of the suspension wire M1 (M2). .

The suspension line support device 10 is attached to the center of the air joint section at a position where the electric lines T1 and T2 are at the same height. The suspension wire support device 10 is assembled in advance and attached by fixing the mounting bracket 1 to the ceiling Tn of the tunnel with anchor bolts. The suspension line support device 10 can integrally and compactly support the suspension lines M1 and M2 that support and suspend the two train lines T1 and T2, respectively. Therefore, the air joint section can be provided in the tunnel to absorb the expansion and contraction of the electric line T. Suspension wire M
The distance from 1 (M2) to the tunnel ceiling surface Tn is 250
mm or more, the specified electrical insulation distance of the suspension line M1 (M2) is secured. When the train Tr passes through the air joint section from the direction shown in FIG. 2, the pantograph smoothly transitions from the train line T1 to T2 at the center of the section. The train lines T1 and T2 are drawn in the extending direction when the train Tr passes or the like. However, the train lines T1 and T2 are sent by the support pulley 6 without difficulty, and the detachment preventing member 7 prevents the drop from the support pulley 6.

FIG. 5 shows another embodiment. In the figure, the same components as those of the previous embodiment are denoted by the same reference numerals, and description thereof is omitted. The suspension wire support device 20 of the present embodiment is shown in FIG.
And as shown in FIG. 2, it is provided at one end of the air joint section. The support rod 13 of the suspension line support device 20 includes a long plate portion 13 a that is open downward and has a substantially U-shaped cross section, and a plate portion 1.
And a steel pipe portion 13c continuous through the stepped portions 13b, 13b rising from 3a.

A support fitting 14 for supporting the support pulley 16 is mounted on the plate portion 13a of the support rod 13. As shown in FIG. 6, the support fitting 14 is fixed on the long plate portion 13a with a bolt from below. Support bracket 14
On the upper side, there are provided two pairs of brackets 15, 15, which face each other and extend in the extending direction of the suspension line M <b> 1 in the lateral direction.
A support pulley 16 is rotatably supported at both front and rear ends of the bracket 15. In the center of the support bracket 14, T
A character-shaped detachment preventing member 7 is provided upright.

On the steel pipe 13c of the support rod 13, a support fitting 2 for supporting the guide pulleys 26 and 27 is provided.
4 is attached. As shown in FIG. 7, the supporting bracket 24 is bent in a substantially U-shaped cross-section so as to straddle the steel pipe 13c, and the mounting plates 24a, 24b opposed to each other vertically.
And bolts 24c for fixing the opposing side surfaces of the mounting plates 24a and 24b to the steel pipe 13c.

Guide pulleys 26 and 27 are supported on the upper and lower sides of the support fitting 24 so as to be horizontally rotatable. Guide pulley 2
6 are provided on the mounting plate 24a side by side in the lateral direction so as to guide the parallel suspension lines M1 in the lateral direction. The guide pulley 27 is provided on the mounting plate 24b so as to guide the train line T1 in the lateral direction. Guide pulleys 26, 27
Is received so that the suspension line M1 or the train line T1 can be sent freely. The guide pulley 26 has a detachment prevention member 1
7 are provided. The detachment preventing member 17 has a hook shape and is fixed to the shafts of the guide pulleys 26, 26 to prevent the suspension line M1 from being detached from the guide pulley 26. Note that the distance from the tip of the shaft of the guide pulley 26 at the uppermost position on the support rod 13 to the tunnel ceiling surface Tn is set to be 250 mm or more in order to maintain necessary electrical insulation with the suspension line M. Have been.

At one end of the support rod 13, a curve fitting 8 is provided.
The attachment pipe 13d for attaching is extended.
The curve fitting 8 attached to the attachment pipe 13d includes:
At the bend of the train line T2, the train line T is retained outside the bend, and is attached via the mounting bracket 9.
As shown in FIGS. 8 and 9, the mounting bracket 9 includes a holding portion 9 a fixed around the mounting pipe 13 d with screws, and a holding portion 9.
and a fixing portion 9c for screwing the curved metal fitting 8 to the side. The curved fitting 8 includes a pulling portion 8a screwed to the fixing portion 9c, and a pipe arm 8b extending substantially horizontally from the pulling portion 8a and then slightly bent so as to be inclined downward and below the suspension line M.
And an ear 8c for holding the train line T. The pulling portion 8a has a built-in spring for urging the pipe arm 8b up and down elastically so as to be swingable.

The suspension wire support device 20 is shown in FIGS.
As shown in (2), it is attached to the end of the air joint section where the electric train line T1 is deviated to the pickup side. Also in this suspension line support device, the suspension lines M1 and M2 respectively supporting the train lines T1 and T2 can be integrally and compactly supported, and an air joint section is provided in the tunnel to expand and contract the train lines T1 and T2. Can be absorbed. Also,
At the bend of the train line T, the curve fitting 8 holds the train line T1 to the outside of the bend. The curved wire fitting 8 can be compactly attached to the suspension wire support device 20 even in a narrow space in a tunnel.

In this embodiment, the suspension line supporting device 2
0 is the train line T1 at one end of the air joint section.
Is attached to a place where it is deviated to the retention side, but if it is attached upside down, it can be attached to the other end side of the air joint section.

[0019]

As described above, in the first invention,
A plurality of suspension lines M1 and M2 for supporting two parallel train lines T1 and T2 in an air joint section in a tunnel.
In the suspension line supporting devices 10 and 20 that support the supporting rods 3 and 13 at a predetermined electrical insulation distance from the ceiling surface via the insulator 2 on the ceiling portion Tn of the tunnel and the supporting rods 3 and 13 in the lateral direction.
And pulleys 6, which can rotate on the support rods 3, 13
16, 26 and 27 are supported, and each of the suspension lines M1 and M2 is movably hung in the direction of extension, so that the suspension line parallel to the narrow space in the tunnel can be compactly supported. In addition, an air joint section can be provided in the tunnel, which has an effect that expansion and contraction of a suspension line or the like can be absorbed similarly to the outside of the tunnel.

[Brief description of the drawings]

FIG. 1 is a plan view of an air joint section in a tunnel.

FIG. 2 is a front view of an air joint section in a tunnel.

FIG. 3 is a front view of the suspension wire support device according to the present invention.

FIG. 4 is a side view of the support fitting.

FIG. 5 is a front view of a suspension line support device according to another embodiment.

FIG. 6 is a side view of the support fitting.

FIG. 7 is a side view of the support fitting.

FIG. 8 is a plan view of a mounting bracket.

FIG. 9 is a front view of a mounting bracket.

FIG. 10 is a plan view of an air joint section.

FIG. 11 is a front view of an air joint section.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mounting bracket 2 insulator 3, 13, 24 support rod 4, 14 support bracket 5, 15 bracket 6, 16, 26, 27 pulley 7, 17 detachment prevention member 8 curve pulling fixture 9 mounting bracket 10, 20 suspension wire support device 13 b Step M1, M2 Suspension line T1, T2 Train line Tn Tunnel ceiling

Claims (3)

[Claims] 1. A suspension line support device for collectively supporting a plurality of suspension lines for supporting two parallel electric lines in an air joint section in a tunnel, wherein a ceiling is provided on a ceiling portion of the tunnel via an insulator. A laterally extending support rod supported at a predetermined electrical insulation interval from the surface, and a pivot supported on the support rod and hung on each of the suspension lines of each train line so as to be movable in the extending direction. A suspension line support device for an air joint section in a tunnel, comprising a pulley that can be used. 2. The support rod has an upper and lower stepped portion, and the lower portion has a vertically extending suspension line for supporting one of the tram lines so as to be movable in the extending direction. The rotatable pulley is supported, and the upper end of the support rod is rotatable in a lateral direction in which a suspension line for guiding the other train line to the side is movably sent in the guiding direction. A suspension line supporting device for an air joint section in a tunnel, wherein the above-described pulley is supported and suspension lines having different vertical positions are collectively supported. 3. The suspension line support device in a tunnel according to claim 1, wherein a curved pulling member for holding a train line from a lateral direction is provided at one end of the support rod.