JP2002370563A - Hanger ear with magnetic damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanger ear having an effective vibration control function corresponding to high speed operation of an electric railcar, easy adjustment of damping force, and hardly affected by secular change and environmental variation. SOLUTION: The hanger ear 1 is provided with a hanger bar 2 latched onto catenary wire by an upper end part, and an ear 3 grasping trolley wire T at a lower end side of the hanger bar 2. The hanger bar 2 is provided with a support member 4, a conductor plate 6, a spring 7, and a permanent magnet 8. The support member 4 is latched onto the catenary wire M via a hanger 5 in an upper part. The conductor plate 6 is engaged to the support member 4 so as to relatively move in a vertical direction within a predetermined range, and it is coupled to the ear 3 via a connecting rod 9 in a lower part. The spring 7 is inserted between the support member 4 and the conductor plate 6, and it vertically energizes the conductor plate 6 so that the conductor plate 6 is maintained in a predetermined relative vertical position to the support member 4. At least one pair of the permanent magnets 8 is provided facing each other near the conductor plate 6 so as to hold it in between and fixed on the support member 4 so that opposing face sides are mutually opposite magnetic poles. Vibration of the trolley wire T is absorbed by generating an eddy current, and at the same time, a damping resistance in the conductor plate 6 moving so as to intersect a magnetic flux of the permanent magnets 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger that is interposed between a trolley wire and a suspension wire in order to suspend a trolley wire in a train line from a suspension wire above the trolley wire.

[0002]

2. Description of the Related Art Vibration of an overhead wire which occurs when a pantograph of a train passes causes the pantograph to be disconnected. The disconnection not only hinders the running of the train, but also causes the wear of the slide plate due to the occurrence of the arc. Particularly in the case of high-speed operation, it is important to suppress the vibration of the trolley wire. Conventionally, as vibration-damping hangiers that suspend a trolley wire while suspending the trolley wire from a suspension wire, those described in, for example, JP-A-5-65039 and JP-A-6-171402 are known. I have. In the former, a spring is interposed in the middle of the hanger bar, and the vibration of the trolley wire when passing through the pantograph is absorbed by the spring, thereby preventing derailment between the pantograph and the trolley wire.The latter is in the middle of the hanger bar. And a friction member interposed therebetween to absorb the vibration of the trolley wire by the spring force and the frictional resistance.

[0003]

Among the above-mentioned conventional hangeyers, the former cannot absorb the vibration of the trolley wire that passes through the pantograph in a short time because of its structure, and when the train is operated at high speed. , Cannot perform an effective anti-vibration function.
The latter uses the frictional resistance between the piston ring and the inner surface of the cylinder, and due to the processing accuracy of both, the error in the frictional resistance is large, it is difficult to adjust, and it is affected by environmental changes such as aging and temperature. It is easy and cannot always expect a certain vibration-proof effect. Accordingly, an object of the present invention is to provide a hanger that has an effective anti-vibration function corresponding to high-speed operation of a train, easily adjusts a damping force, and is not easily affected by aging and environmental changes. .

[0004]

According to the present invention, in order to solve the above-mentioned problems, a hanger bar 2 which is hung on a suspension wire M at an upper end and an ear 3 which grips a trolley wire T at a lower end of the hanger bar 2 are provided. Are provided to constitute the hanger 1. The hanger bar 2 includes a support member 4, a conductor plate 6, a spring 7, and a permanent magnet 8. The support member 4 is hung on the suspension line M at the upper part. The conductor plate 6 is engaged with the support member 4 so as to be relatively movable up and down within a predetermined range, and is directly or indirectly coupled to the ear 3 at a lower portion. The spring 7 is inserted between the support member 4 and the conductor plate 6 and urges the conductor plate 6 upward to hold the conductor plate 6 at a predetermined relative vertical position with respect to the support member 4. Permanent magnet 8
Are opposed to each other so as to be close to and sandwich the conductor plate 6,
At least one pair is fixed to the support member 4 so that the opposing surfaces have opposite magnetic poles. And the permanent magnet 8
In this case, an eddy current is generated in the conductor plate 6 moving across the magnetic flux, and at the same time, a braking resistance is generated, and the vibration of the trolley wire T is absorbed.

[0005]

Embodiments of the present invention will be described with reference to the drawings. 1 is a vertical front view of the hanger, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG.
4 is an enlarged view of a part of the hanger, FIG. 5 is a front view of the hanger, and FIG. 6 is a side view of the hanger.

As shown in FIGS. 5 and 6, the hanger 1
Is interposed between the trolley line T and the suspension line M in order to suspend the trolley line T on the suspension line M (including the auxiliary suspension line) above the trolley line T. The hanger 1 includes a hanger bar 2 and an ear 3. The hanger bar 2 is hung on the suspension line M at the upper end. The ear 3 is connected to the lower end of the hanger bar, and holds the trolley wire T.

The hanger bar 2 has a support member 4 and a hanger 5 for hooking the upper end of the support member 4 to a suspension line M. Also,
The hanger bar 2 includes a conductor plate 6, a spring 7, and a permanent magnet 8 incorporated in a support member 4, as shown in FIGS.

The support member 4 is formed in a cylindrical shape extending in the vertical direction, and a lid 4 a at an upper end is connected to a hanger 5.

The conductor plate 6 is made of copper and is inserted into the support member 4 so as to be relatively movable in the up-down direction.
To the ear 3. The conductor plate 6 is supported by a guide member 10 provided in the support member 4 at the upper portion so as to be slidable in the vertical direction.

The spring 7 is provided in the support member 4, and the lower end is locked by the lower lid 4 b of the support member 4, and the upper end is locked by the spring receiving member 9 a of the connecting rod 9. The connecting rod 9 is connected to the lower end of the conductive plate 6 at the upper end, extends freely through the lower lid 4b of the support member 4, and extends outward, and the ear 3 at the lower end.
Is combined with The spring 7 always urges the conductive plate 6, the connecting rod 9, and the ear 3 to pull up the trolley wire T with a predetermined force in the installed state.

The permanent magnet 8 is fixed in the support member 4 via a magnetic holding member 11. As shown in FIG. 4, a large number of permanent magnets 8 are provided in proximity to the conductor plate 6 and opposed to each other so as to sandwich the conductor plate 6, and the opposite surfaces have opposite magnetic poles. Therefore, the conductor plate 6 is provided with the permanent magnet 8
Move up and down across the magnetic flux, and at this time, an eddy current is generated in the conductive plate 6 by electromagnetic induction, and at the same time, a movement resistance of the conductive plate 6 is generated. The magnitude of the movement resistance changes in proportion to the moving speed of the conductor plate 6.

The vertical vibration of the trolley wire T is caused by the conductor plate 6
Braking force due to electromagnetic induction and spring 7 as an elastic buffer
Is absorbed by the action of When the speed of train operation is increased and the vibration speed is increased, the braking force by electromagnetic induction is correspondingly increased and an effective vibration damping action is performed. Since the wear part due to friction is mainly a sliding part between the guide member 10 and the conductor plate 6, it is hardly affected by aging, and the vibration suppression performance is affected by environmental changes such as temperature changes. Absent. By changing the number and arrangement of the permanent magnets 8, the vibration damping ability can be changed relatively easily.

[0013]

As described above, according to the present invention, the vertical vibration of the trolley wire T is absorbed by the braking force of the conductive plate 6 by electromagnetic induction and the action of the spring 7 as an elastic buffer. Therefore, when the operation of the train is accelerated and the vibration speed is increased, the braking force by the electromagnetic induction is correspondingly increased, and an effective vibration damping action can be performed. Also,
It is possible to provide a hanger that is easy to adjust the vibration damping force and is less susceptible to aging and environmental changes.

[Brief description of the drawings]

FIG. 1 is a vertical front view of a hanger.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

FIG. 4 is an enlarged view of a part of the hanger.

FIG. 5 is a front view of the hanger.

FIG. 6 is a side view of the hanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanger 2 Hanger bar 3 Ear 4 Support member 4a Lid 4b Lid 5 Hanger 6 Conductor plate 7 Spring 8 Permanent magnet 9 Connecting rod 9a Spring receiving member 10 Guide member 11 Holding member M Suspension line T Trolley wire

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masatoshi Shimizu 2-8-8 Hikaricho, Kokubunji-shi, Tokyo Inside the Railway Technical Research Institute (72) Inventor Takeozo Shimada 2--8 Hikaricho, Kokubunji-shi, Tokyo 38 Within the Railway Technical Research Institute (72) Inventor Yuichi Iwama 6-5-19 Minamishinagawa, Shinagawa-ku, Tokyo Sanwa Tekki Co., Ltd. (72) Motohisa Iiguni 6-5 Minamishinagawa, Shinagawa-ku, Tokyo No. 19 Sanwa Tekki Co., Ltd. (72) Inventor Fumiya Iiyama 2703 Nakaokamoto, Kawachi-cho, Kawachi-gun, Tochigi Prefecture F-term in the Utsunomiya Plant of Sanwa Tech Co., Ltd. 3J048 AA02 AD05 BC02 CB12 DA07

Claims (3)

[Claims] 1. A hanger bar hung on a suspension line at an upper end portion, and attached to a lower end of the hanger bar,
An ear for gripping a trolley wire, wherein the hanger bar is engaged with a support member hooked to the suspension line at an upper portion, and is engaged with the support member so as to be relatively movable up and down within a predetermined range in the lower portion, and A conductor plate coupled to the ear, a spring inserted between the support member and the conductor plate for urging upward to hold the conductor plate at a predetermined relative vertical position with respect to the support member; And at least a pair of permanent magnets fixed to a support member so that the opposing surfaces have opposite magnetic poles so as to sandwich the magnetic plate. Characterized by absorbing vibrations of the trolley wire by causing the trolley wire. 2. The support member is formed in a tubular shape extending in a vertical direction, and the conductor plate is inserted into the support member so as to be relatively movable in a vertical direction, and a guide member provided in the support member. 2. The hanger with a magnet damper according to claim 1, wherein a plurality of pairs of the permanent magnets are provided along the conductor plate at predetermined intervals in the vertical direction along the conductor plate. 3. 3. The support member is formed in a cylindrical shape extending in a vertical direction, and is hooked on a suspension line via a hanger at an upper end, and the conductor plate is inserted into the support member so as to be relatively movable in a vertical direction. The lower end is connected to the ear via a connecting rod, and the upper end is slidably supported by a guide member provided in the support member. The spring is provided in the support member, and is inside the support member. The upper end is locked to the spring receiving member of the connecting rod, and in the installed state, the conductor plate, the connecting rod and the ears are always urged to pull up the trolley wire. A hanger with a magnetic damper according to claim 1.