JPH0565039A - Vibration insulating hanger/ear - Google Patents

Abstract

PURPOSE:To prevent separation of a pantograph from a trolley line by locating a disc spring in the middle of a hanger bar and absorbing vibration of the trolley line during the passage of the pantograph. CONSTITUTION:A hanger supported in a hanging state on a suspension line M is divided into an upper hanger 1 and a lower hanger 7 having an ear piece 2. A resilient cushioning body 8 is interposed in a connection part between the upper and lower hangers 1 and 7 so as to connect them together. This constitution absorbs vibration generated during the passage of a pantograph and prevents the occurrence of separation of the pantograph from a trolley line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-proof hanger with a disc spring interposed in the middle of a hanger bar to absorb the vibration of a trolley wire when passing through a pantograph and prevent the pantograph from separating from the trolley wire.

[0002]

2. Description of the Related Art An electric railway overhead wire generally has hangers arranged at predetermined intervals in the longitudinal direction of the suspension overhead wire to suspend the trolley wire.

[0003]

Conventionally used hangers include a crimping type and a bolting type for sandwiching a trolley wire, but a hanger is used for a suspension wire that is stretched in a mountain shape at a constant cycle. The trolley wire is always horizontal, and the total length varies depending on the hanging position, but it is equipped with an ear piece at the lower end of the hanger. Therefore, when the pantograph slides on the lower surface of the trolley wire due to traveling of the train, a push-up force of the trolley wire due to the pantograph and a so-called flow in the traveling direction are generated, which vibrates the entire hanger and exceeds the allowable value. The pantograph and the trolley wire separate from each other, causing an accident.

An object of the present invention is to prevent vibration when passing through the pantograph.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, in which a hanger suspended and supported by a suspension wire is divided into an upper hanger and a lower hanger provided with ear pieces, and the upper and lower hanger The gist of the present invention is to connect the two hangers to each other with an elastic buffer interposed therebetween so as to absorb the vibration when passing through the pantograph.

[0006]

The trolley wire is vertically suspended at the middle portion of the hanger, and a disc spring is interposed at the connecting portion of the upper and lower hangers to suspend the trolley wire sandwiched between the lower hangers via the ear pieces. Therefore, when the pantograph passes, a force that pushes up the trolley wire acts on the pantograph, so that the load of the trolley wire is again applied to the hanger immediately after passing. However, since a disc spring is provided in the center of the hanger,
The disc spring absorbs vibrations when passing through the pantograph and prevents vibrations to the upper hanger and the suspension wire, thereby preventing separation of the pantograph and the trolley wire.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vibration-proof hanger with a hoop according to the present invention will be described below with reference to the illustrated embodiments. In the figure, M is a suspension wire, and T is a trolley wire which is located below the suspension wire M and is horizontally suspended via the hanger of the present invention.

The anti-vibration hanger ear H of the present invention is shown in FIGS.
Details. The upper hanger 1 is suspended at a predetermined position of the suspension overhead wire M. If the loop portion of the upper hanger 1 is brought into direct contact with the suspension overhead wire M, the suspension overhead wire and the hanger are damaged by friction and arcs. It is suspended and supported via an electrically insulating protective cover 5. The upper hanger 1 has a boss portion 61 of the upper cover 6 having an open lower surface at one end thereof.
It is inserted and fixed in.

A lower cover 9 which is screwed to face the lower part of the upper cover 6 is slidably supported at the center of a lower cover 9 and a plurality of disc springs 8 (or (A coil spring may be used), the upper cover 6 is screwed to cover the outer surface of the disc springs 8, and the lower hangers 7 are inserted into the central holes of these disc springs so that they are superposed on the uppermost disc spring. The plate 71 is placed on and the plate 71 and the upper end of the lower hanger 7 are locked to be integrated.

The lower end of the lower hanger 7 is fixed to a boss portion 23 projecting from the upper portion of the ear piece 2 so as to be integrated, and the ear piece 2 has two ear pieces 21 and 22 which are bolts 3 and nuts 4.
Then, the trolley wire T is clamped by the claw pieces of the ear pieces 21 and 22.

As shown in FIG. 1, the plate 71 on the Belleville spring fitted in the upper and lower covers 6 and 9 has an allowable clearance between the top surface of the upper cover and the plate upper surface when the trolley wire is suspended normally. Also, even if the trolley wire is pushed up by the pantograph, this amount of pushing up is absorbed in this gap, and when a large load is temporarily applied to the hanger ear H due to the sudden drop of the trolley wire immediately after passing the pantograph. ,
Elasticity of the disc springs is determined so that the disc springs in the upper and lower covers absorb the overload.

[0012]

According to the vibration-proof hanger of the present invention, the hanger suspended and supported on the suspension wire is divided into an upper hanger and a lower hanger provided with ear pieces, and an elastic buffer is interposed between the upper and lower hangers. Since the connection is made so as to absorb the vibration when the pantograph passes, the vibration generated in the trolley wire when the pantograph passes is absorbed and prevented by the elastic cushioning member, so that the separation between the pantograph and the trolley wire can be prevented. Further, since the generation of arc can be suppressed, there are advantages such as speeding up.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an antivibration hanger of the present invention.

FIG. 2 is a side view of the same.

[Explanation of symbols]

 M Suspended overhead wire T Trolley wire 1 Upper hanger 2 Ear piece 6 Upper cover 7 Lower hanger 8 Disc spring 9 Lower cover

Claims (1)

[Claims] 1. A hanger for suspending and supporting a suspension overhead wire is divided into an upper hanger and a lower hanger provided with ear pieces, and an elastic cushioning member is interposed between the upper and lower hangers to connect the hanger. Anti-vibration hanger ear that is designed to absorb the vibration of.