JPH04201630A - Structure of insulator section - Google Patents

Abstract

PURPOSE:To improve durability in an insulator section structure of the trolley wire on which the pantagraph of a train slides by installing a holding member, bridge body, and a pair of sliders set on the equal plane to the undersurface of a trolley wire, in a turnable manner, restricting turn, on a trolley wire connecting member. CONSTITUTION:The edge parts of trolley wires 1 and 1 are fitted with the installation groove of a connecting member 6, and fixed by tightening an installation bolt 9, and a section insulator 2 is connected with both the trolley wires 1 and 1. Then, the lower edges of the supporting wires 23 and 23 suspended from a suspending wire are installed on the suspending metal fittings 22 and 22. In this case, a holding member 4 contacts a contact member 12, and the tilt of the connecting member 6 is prevented, and the straight installation is enabled. Accordingly, the slidable surface 18 of a slider 7 is arranged horizontally on the equal plane to the undersurfaces of the trolley wires 1 and 1, and a pantagraph 17 is slidable-supported.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to the structure of an insulator section of a b-rolley line on which a pantograph of a train slides.

[Prior Art] As a conventional structure of an insulator section, the structure shown in FIGS. 11 and 12, for example, is known.

In the structure of this conventional insulator section, connecting members 6 for connecting the trolley wire l to both ends of an insulating bridge body 3 are fixed with mounting bolts 9, and the bridge body is 3 is fixed and both trolley wires 1. l are connected. In addition, each connecting member 6, 6
A pair of sliders 7.7 are attached to the bridge body 3 so as to extend in opposite directions to the left and right in FIG. 11, respectively. A sliding surface 18 extending on the same plane as the lower surface of the bridge body 3 and the lower surface of the trolley wire 1 is provided at the lower edge of both sliders 7.
is provided so that the pantograph 17 can smoothly slide under the section insulator.

[Problems to be Solved by the Invention] However, in the structure of this conventional insulator section, the lower outer peripheral edge of the bridge body 3 slides along the lower surface of the trolley wire l, as shown by the chain line in FIG. Therefore, there was a technical problem in that the crosslinked body 3 was worn out when the pantograph 17 passed therethrough, and the crosslinked body 3 was only durable enough to require replacement, for example, twice a year.

The present invention has been made by focusing on the technical problems existing in the conventional technology as described above, and its purpose is to provide a durable insulator section structure.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a connecting member that is connected to each adjacent end of a continuous trolley wire, and a connecting member that is rotatably connected to the connecting member. a gripping member, a contact member that contacts the connecting member with the gripping member to restrict rotation, and a lower surface having both ends fixed to the gripping member and positioned above the lower surface of the trolley wire, and having a creepage insulation distance. a pair of sliders extending from one of the connecting members to the other connecting member and having a sliding surface whose lower surface is flush with the lower surface of the trolley wire. It has an insulator section structure in which section insulators are connected between trolley wires.

[Operation] Adjacent ends of the trolley wire are connected by both connecting members, both gripping members, and a bridge. At this time, the abutting member abuts the gripping member to prevent rotation of the connecting member, and the insulator sections are connected without tilting the connecting member. Additionally, the necessary creepage insulation distance is ensured by the bridge.

In addition, since the pair of sliders extends from one of the connecting members to the connecting portion of the other side, and the lower surface of the slider has a sliding surface that is flush with the lower surface of the trolley wire,
The pantograph sliding between both connecting members smoothly slides along this sliding surface. Therefore, since the lower surface of the bridge body, which is located above the bottom surface of the trolley wire, is located above the sliding surface of the slider, the pantograph does not come into contact with the bridge body.

[Example 1] Hereinafter, Example 1, which is embodied in a trolley wire l suspended from a suspension line, will be described based on FIGS. 1 to 7.

In FIG. 1, the section insulator 2 includes a tightening cross-linked body 3 formed in a rod shape, a gripping member 4 in a substantially horizontal shape that fixes both sides of this cross-linked body 3, and this gripping member 4.
and a conductive connecting member 6 connected by a pin 5, so that they are formed approximately laterally symmetrically. Further, one ends of a pair of sliders 7 extending in the horizontal direction are fixedly attached to the left connecting member 6.

The connecting member 6 is made of a conductive material such as metal or carbon fiber, and on one side of the connecting member 6, a trolley wire connecting part 8 with an n-shaped cross section and an open bottom is formed (see FIG. 4).
, a mounting groove 9 into which the trolley wire 1 having a circular groove is inserted is formed. Further, a plurality of mounting bolts IO are attached to prevent the trolley wire 1 from being removed and fixed, and the trolley wire 1 protrudes slightly downward from the lower end of the trolley wire connecting portion 8 to enable attachment.

On the other side of the connecting member 6, a bifurcated gripping member mounting portion 11 is formed so that the lower portion of the gripping member 4 can be clamped thereto (see FIG. 3), and is rotatably mounted by a pin 5.

This pin 5 must have the strength to withstand the erection tension that acts between both trolley wires 1, 1, so between the trolley wires, the pin 5 needs to have a small diameter and high strength. As shown in Fig. 1, the pin 5 is inserted at a position δ above the central axis position of the thread line 1, and the pin 5 is made of sufficient thickness to ensure strength. are doing.

Further, at the center of the connecting member 6, an abutting member 12 is provided to protrude upward. This contact member 12 has a contact portion 13 that contacts the side surface of the gripping member 4- at the central axis extension position of the bridge body 3.
is provided to restrict rotation of the gripping member 4 so that the angle between the gripping member 4 and the connecting member 6 does not exceed approximately 90°.

A pair of opposing gripping members 4, 4 are each formed in a horizontal shape, and the bridge body 3 is sandwiched and fixed between the gripping members 4, 4. The bridge body 3 and both gripping members 4 form a gate shape.

The bridge body 3 connects each trolley wire 1. It is formed of a rod-shaped core 14 made of FRP having a tensile strength capable of withstanding the tension applied between the core 14 and a cylindrical rubber cover 15 covering the core 14. Further, a plurality of folds 15a are formed on the outer peripheral surface of the rubber cover 15, and a creepage insulation distance is ensured by the outer peripheral edge of the bridge body 3.

In FIG. 1.2, a pair of sliders 7.7 is attached to both sides of the left connecting member 6 by a pair of mounting bolts 16. The slider 7 extends along the axis of the trolley wire 1 to near the right gripping member 4 on both sides of the bridge body 3, and is flush with the lower surface of the trolley wire 1 so that the pantograph 17 slides into contact with the lower surface side without resistance. A sliding surface 18 that is a flat surface is formed.

A pair of anti-rotation plates 19 are sandwiched between the outer surface of the slider 7 and the head of the mounting bolt 16. A pair of engagement pieces 20 are bent at both ends of the rotation stopper plate 19 to engage with the heads of the mounting bolts 16 to prevent the mounting bolts 16 from rotating.

Note that the gripping member 4 is attached to the hanging fitting 22 by pins 21 and 21.
It is rotatably supported at the lower end of the body, and can be suspended from a suspension line (not shown) via a support wire 23.

Next, the operation of the section insulator 2 of the first embodiment configured as described above will be explained.

To erect the section insulator 2, a trolley wire 1 is suspended from a suspension wire (not shown).

The adjacent ends of the trolley wire l are arranged in series, the end of the trolley wire l is fitted into the mounting groove 9 of the connecting member 6, and the mounting bolt IO is tightened to connect and fix the trolley wire l. As a result, the section insulator 2 is inserted between the trolley wires, , i, , i.
are concatenated. Next, the lower end portions of the support wires 23.23 suspended from the suspension wires are tied to the suspension fittings 22.22 and suspended. Then, an erection tension is applied to the trolley wire 1 to erect it.

In this case, if the structure is such that the contact member 12 is not provided, the pin 5 is inserted at a position δ above the central axis position of the trolley wire l, as shown in the exaggerated schematic diagram in FIG. Therefore, the pin 5 is stretched so that the center of the pin 5 is located at the extension position of the axis of the trolley wire 1. That is, the connecting member 6 tilts about the pin 5, and the entire section insulator 2 sinks. However, in this embodiment, as shown in FIG. 7, the abutting member 12 abuts the side of the gripping member 4 to prevent the connecting member 6 from tilting, so the connecting member 6 is installed straight. Therefore, the sliding surface 18 of the slider 7 is arranged horizontally, the bridge body 3 is supported above the axis of the trolley wire 1, and the lower surface of the bridge body 3 is arranged to be biased upward from the sliding surface 18. be done.

Now, in FIG. 1, the pantograph 17 slides on the lower surface side of the trolley wire l from the left trolley wire l side and moves to the sliding surface 17 of the slider 7. At this time, as shown by the chain line in Fig. 1.2, the pantograph 17 is slidably supported by the sliding surfaces 17.17 of the pair of front and rear sliders 7.8, so the pantograph 17 moves the slider 7.8 in the front and rear direction. It slides without twisting (without twisting the trolley wire 1) and moves to the trolley wire 1 on the right side.

Moreover, since the bridge body 3 is arranged above the lower surface of the trolley wire l, the pantograph 17 moves without slidingly contacting the lower outer peripheral edge of the bridge body 3.

In this first embodiment, the abutment member 12 abuts on the side of the gripping member 4 to prevent the coupling member 6 from tilting, and the slider 7 is disposed along the axis of the trolley wire 1. The sliding surface 18 can be slid smoothly.

Moreover, since the pantograph 17 does not come into sliding contact with the lower outer peripheral edge of the bridge body 3, the bridge body 3 is not worn out, and the durability of the section insulator 2 can be improved.

In addition, a plurality of folds 14a are provided on the outer periphery of the bridge body 3 so that the pantograph 17 does not come into sliding contact with the lower outer peripheral edge of the bridge body 3.
can be provided. Therefore, even if the bridge body 3 is short, a sufficient creeping insulation distance can be ensured, and the entire section insulator 2 can be made smaller and lighter.

[Example 2] Next, Example 2 of the present invention will be described based on FIGS. 8 to 10.

The difference from the structure of the insulator section shown in Example 1 is in the abutment member 12.

Therefore, common parts will be omitted from the description.

As shown in FIG. 8, a contact member 112 is provided at the center of the connecting member 106 to protrude upward. This contact member 11
2 is screwed with an abutment bolt 113 whose axis is centered at the extended position of the central axis of the bridge body 3. This contact bolt 11
By screwing the gripping member 3 forward, its tip can come into contact with the side surface of the gripping member 4 and press it.

Next, the operation of the structure of the insulator section of the second embodiment configured as described above will be explained.

When the adjacent ends of the trolley wire 1.1 are arranged in series and the section insulators 102 are connected, this embodiment 2
Now, as described in the first embodiment, the connecting member 6 tilts around the pin 5 and sinks as a whole (
(See Figure 9). Trolley wire 1. 1, when the abutting bolt 113 is screwed forward and its tip presses the side of the gripping member 4, the connecting member 106 rises accordingly, and the connecting member 106 can be erected in a straight state. 10
(see figure).

Note that when the trolley wire l is stretched, a bending stress that bends the crosslinked body 3 acts, so in Example 1, the crosslinked body 3 is made thicker so as to have enough rigidity to withstand this bending stress. Otherwise, the gripping member 4 may tilt and the connecting member 106 may not be sufficiently horizontal. However, in the second embodiment, even if the bridge body 3 is bent to some extent, if the escape of the gripping member 4 caused by the bending is ensured by screwing the abutment bolt l13, the connecting member 6 can be moved to the trolley. It can be set parallel to the axis of line 1. Therefore, the connecting member 6 can be arranged along the axis of the trolley wire l without making the bridge body 3 thicker than necessary.

As a result, the bridge body 3 is supported above the axis of the trolley wire l, and the lower surface of the bridge body 3 is connected to the sliding surface 17 of the slider 7.
It is located more upwardly.

Furthermore, when constructing the section insulator 102, if the abutment bolt 113 is initially retracted, the connecting member 6 can freely rotate between the gripping member 4 and the bending between the trolley wire l and the connecting member 6. The trolley wire 1 can be constructed without any damage to the trolley wire 1.

Note that this invention is not limited to the configuration of Example 1 or Example 2 (for example, the configuration of each part may be changed without departing from the spirit of the invention, such as changing the shape or material of the crosslinked body). It is also possible to change and embody it as desired.

[Effects of the Invention] - As described above, in the present invention, the connecting member is connected to each adjacent end of the continuous trolley wire, the grip member is rotatably connected to the connecting member, and the connecting member is connected to the connecting member. It has a contact member that contacts the gripping member to restrict rotation, a lower surface that has both ends fixed to the gripping member, is positioned above the lower surface of the trolley wire, and a length that ensures a creepage insulation distance. A section insulator consisting of a bridge body and a pair of sliders extending from one connecting member to the other connecting member and having a sliding surface whose lower surface is flush with the lower surface of the trolley wire is installed between the trolley wires. Because of the structure of connected insulator sections, the pantograph can have a highly durable insulator section structure in which the pantograph does not come into contact with the crosslinked body.

[Brief explanation of the drawing]

1 to 7 show Embodiment 1 of the present invention, FIG. 1 is a partially cutaway front view, FIG. 2 is a bottom view of the same, and FIG. 3 is a view taken from FIG.
4 is an enlarged sectional view taken along the line B-B of FIG. 1, FIG. 5 is an enlarged sectional view taken along the line C-C of FIG. 1, FIG. 6 is a schematic diagram showing the tensioned state, and FIG. is a schematic diagram showing the action of the contact member, Figures 8 to IO show Example 2, and Figure 8 is a partially broken front view;
FIG. 9 is a schematic diagram showing the tensioned state, FIG. FIG. DESCRIPTION OF SYMBOLS 1...Trolley wire, 4...Gripping member, 3...Bridge member, 6...Connection member, 7...Slider, 12...
Contact member, 18... Sliding surface Patent applicant: Central Japan Railway Co., Ltd. Nippon Insulator Co., Ltd. Agent: Patent attorney On 1) Mizomuro (and 1 other person) Figure 8, 4m Director General of the Agency Satoshi Uematsu Tono 3, Name of person making the amendment Name Central Japan Railway Company Name 406 Nippon Insulator Co., Ltd. Fax only 0582 (66)-13395, Subject of amendment (1) Power of attorney (2) Column 6 for detailed explanation of the invention in the specification, Contents of amendment (1) The power of attorney will be amended as shown in the attached sheet. (2) The statement "Gripping members 4, 4 are horizontally shaped" on page 7, line 4 of the specification will be amended as follows. "The gripping members 4, 4 are made of conductive material such as metal or carbon fiber, and are horizontally shaped."

Claims (1)

[Claims] 1. A connecting member (6, 106) connected to each adjacent end of the continuous trolley wire (1, 1);
, 106), the gripping members (4, 4) are rotatably connected to the
and an abutting member (12, 112) that abuts the gripping member (4) on the connecting member (6, 106) to restrict rotation;
Both ends are fixed to the gripping members (4, 4), and the trolley wire (
1. An insulating cross-linked body (3
) and a sliding surface () extending from one of the connecting members (6, 106) toward the other connecting member (6, 106), the lower surface of which is flush with the lower surface of the trolley wire (1, 1). An insulator section structure in which a section insulator consisting of a pair of sliders (7) having 18) is connected between trolley wires (1, 1).