JP2565845Y2 - Evacuation device for rigid overhead wire - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for retracting a part of a rigid overhead line fixed to a ceiling in an underground yard of a subway.

[0002]

2. Description of the Related Art In the past, subway yards were conventionally provided on the ground called "light sections", but due to the recent rise in land prices, they have been relocated underground. Operations at the yard include cleaning and inspection of vehicles, and inspection of the function of lifting and lowering the pantograph. In the case of an underground, the height of the space to the ceiling is limited due to construction costs. Rigid overhead wires fixed to the ceiling hindered these tasks and made it difficult to check the maximum extension of the pantograph. Japanese Patent Laid-Open Nos. 2-161007, 61-107642, and 61-139527, similar to the present invention, are similar to the prior art.
There is a number. In this method, a missing portion is provided in a part of a rigid overhead wire, and a movable overhead wire capable of complementing the missing portion is provided. But,
All of the movable overhead wires need to move in the pantograph traveling direction or in the same direction, and in addition to the side wall side.

[0003]

A rigid overhead wire fixed to the ceiling of an underground yard over its entire length is divided into a fixed overhead wire having a suitable length missing from the rigid overhead wire and a movable overhead wire located on the side so as to complement this missing section. Then, the movable catenary wire can be retracted to the side by a predetermined distance from the position. For this purpose, a support arm on the side wall of the underground yard, a bracket protruding sideways from the support arm, and a lower trolley movable along the bracket are provided, and the movable overhead line is fixedly suspended to the lower trolley.

[0004]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The rigid overhead wire according to the present invention is composed of a fixed overhead wire 1 fixed to the ceiling of the underground yard and provided with a missing section of an appropriate length, and a movable overhead wire 2 located laterally so as to complement the missing section. The ends are connected by an extendable feed line F. The ends of both overhead wires are curved as shown in FIG. 3 so that the pantograph can contact and pass through both overhead wires without hindrance.

The support arms 3a, 3b, 3c,... Are attached to the underground yard side wall at appropriate intervals, and connected to the top of the drive shaft 4,
Are rotatably supported. The bracket 5 protrudes laterally from the upper part of the support arm and faces upward of the vehicle. The lower bundle wheel 6 is a rail (not shown) provided on a bracket.
The movable overhead wire 2 is fixed to the lower part via an insulator. A chain wheel 7 is fixed to the drive shaft 4 at each support arm position, and a chain wheel 8 is pivotally supported at the tip of the bracket 5 correspondingly. Both chain wheels 7, 8 are connected by a chain 9, and both ends of the chain are locked by a lower bundle wheel. At the position of the center support arm 3c, a wheel & pinion 10 is separately fixed to the drive shaft 4, and the wheel & pinion 11 is pivotally supported by an operation table 13 provided on the lower side wall correspondingly. Both chain wheels 10 and 11 are connected by a chain 12. The chain wheel can be rotated manually or by a motor via a reduction gear (not shown). On the prototype side, the height from the operation console to the bracket is about 1.2 m,
Bracket protrusion length about 4m, movable overhead wire length about 25
m.

[0006]

When the train enters the underground yard, the power supply to each overhead line is cut off, and the lower bundled car 6 moves. When the chain wheel 11 is turned, the drive shaft 4 rotates, and the lower bundle wheel 6 is in the normal position (solid line in FIG. 1).
To the bracket retreat position (chain line in FIG. 1).
The worker can transfer to the upper surface of the vehicle from the work path provided on the side of the wall surface and perform all work without being hindered by the rigid overhead line.
When the operation is completed, the chain wheel 11 is reversed, and everything is returned to the old position.

[0007]

[Effect] Similar to the present invention, to a fixed overhead line having a missing part in part,
Japanese Patent Application Laid-Open No. Hei 2-161007, Japanese Utility Model Application Laid-Open No. 61-107642,
It is known from JP-A-61-139527. However, all of the movable overhead wires disclosed therein move in the pantograph traveling direction, whereas in the case of the present invention, they move at right angles, that is, to the side. As a result, a feature is that the long movable overhead line is evacuated to the side all at once, so that it can be immediately used for the rooftop work of the vehicle.

[0008]

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a plan view showing an arrangement of main members.

FIG. 3 is a front view showing a relationship between fixed and movable overhead lines.

[0009]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed overhead wire 2 Movable overhead wire 3 Support arm 4 Drive shaft 5 Bracket 6 Lower bundled wheel 7,8 Chain wheel 9 Chain 10,11 Chain wheel 12 Chain 13 Operation console F Feed line

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Noboru Nakamura 6-5-19 Minamishinagawa, Shinagawa-ku, Tokyo Sanwa Tekki Co., Ltd. (72) Inventor Masayuki Sugiyama 6-chome Minamishinagawa, Shinagawa-ku, Tokyo No. 5-19 Inside Sanwa Tekki Co., Ltd. (56) References JP-A-2-161007 (JP, A) JP-A-61-139527 (JP, A) JP-A-61-107642 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixed overhead line fixed to an underground ceiling of a subway yard and provided with a missing section of an appropriate length, a movable overhead line arranged on a side of the underground yard so as to complement the missing section, and an underground yard wall. Support arms provided at appropriate intervals along the missing section, a drive shaft supported by connecting the support arms, a bracket protruding laterally from the support arm and facing the upper part of the vehicle, and guides provided with brackets A lower shunting car that can be transported along a rail and has the movable overhead wire fixed downward, a lower shunting car transfer device in which a chain wheel provided at each of a drive shaft and a bracket end is locked to the lower shunting car by a chain, and a reduction gear And a drive device capable of driving the drive shaft via the helical wire.