JPH0951602A - Current collector - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to improve contact following performance during active control by using a current collector of a low noise current collector that directly contacts and collects power from overhead lines. [Structure] According to the present invention, the sliding plate 3 is installed in the traveling direction.
The fine movement spring mechanism 24 for supporting the spring mechanism 24 and the damping means 14 for supporting the spring mechanism 24 are used to attenuate the expansion and contraction of the fine movement spring mechanism by the external force from the overhead wire 1 and enhance the contact of the sliding plate 3 with the overhead wire. .

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a current collector for a high-speed train.

[0002]

2. Description of the Related Art Recently, as the traveling speed of high-speed trains such as Shinkansen (270 to 300 to 350 km / h) has increased, the aerodynamic noise of current collectors has increased, and the contact current between the contact strips and overhead lines has been increased. The current collection performance due to is likely to decrease. Therefore, there has been proposed a new type current collector aiming to reduce the noise and maintain the current collecting performance. This current collecting device is provided with a fine movement spring mechanism that supports the contact plate inside the airfoil current collecting member. Such an apparatus is disclosed in Japanese Patent Laid-Open No. 5-
It is disclosed in Japanese Patent No. 25902.

[0003]

In the new type current collector using the airfoil current collector, it is necessary to install a sliding plate fine movement spring mechanism for collecting current by contact with the overhead wire. However, when the new current collector is actively controlled to increase the gain, the gain of the frequency peak of the natural frequency of the contact plate support mechanism is too large, which causes a problem that contact current collection becomes difficult. Therefore, when using the sliding plate support mechanism, about 600
With respect to the relative lateral displacement of the overhead wire of about mm, the current structure is sufficient for contact current collection, but the vertical vibration of the overhead wire causes the natural vibration of the sliding plate support mechanism. Since the gain of several frequency peaks is large and the active control of the new current collector is impossible, it cannot be used for the new current collector with reduced aerodynamic noise.

An object of the present invention is to prevent the contact following performance from being deteriorated when the active control is performed with respect to the vertical displacement of the overhead wire.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a current collector composed of a fine movement spring mechanism for supporting a contact plate contacting an overhead wire at a plurality of points, and a damping means for supporting the fine movement spring mechanism on a current collecting cover. It is characterized by having done.

[0006]

The sliding plate is pushed by the external force from the overhead wire and the fine moving spring mechanism causes the sliding plate to follow, but the expansion and contraction of the spring is damped by the damping device. The followability of the contact plate can be improved.

[0007]

EXAMPLE This example will be described below with reference to FIGS. In FIG. 5, the wing-shaped collector cover 4 is an insulator 36 supported by a drive device (not shown) so as to be vertically movable.
On top of. The drive device operates to detect the contact force of the contact strip 3 with the overhead line 1 and to press the contact strip 3 with a constant force. The contact plate 3 is mounted on a fine movement spring mechanism 24 installed in the current collector cover. The fine spring mechanism rests on the damping device 14.

In FIG. 6, the collector cover 4 and the sliding plate 3 are bent in an arc shape in the traveling direction. Rubbing board 3
There are a plurality of fine movement spring mechanisms 24 that support the longitudinal direction of the sliding plate 3.

In FIG. 7, the contact plate 3 is attached to a channel-shaped contact plate receiver 5 with a plurality of bolts and nuts 34 and 35. There are a plurality of mounting positions along the longitudinal direction of the contact plate 3.

1 to 4, the fine movement spring mechanism 24 is shown.
The configuration of the damping device 14 will be described. A vertical side of a channel-shaped mounting plate 8 is rotatably attached to each of the vertical sides of the channel-shaped mounting plate 5 by a pin 7. 7c is a bearing. Screw one side of the head of pin 7
It is fixed to the sliding plate receiver 5 by d. The mounting plate 8 has a rectangular shape when viewed from above.

A hollow shaft 6 is attached to the lower surface of the mounting plate 8 by a bolt 1.
It is attached by 9. A female screw is attached to the central portion of the mounting plate 8 and a bolt 19 is screwed therein. The mounting plate 8 and the hollow shaft 6 are fitted together. 9 is a coil spring, 2
3 is a cylindrical spring cover, and 26 is a bearing body, which is fixed to the cover 4 by bolts and nuts 31 and 28. The bearing body 6 supports the middle of the hollow shaft via a bearing 25. The bearing 25 is made of small metal and supports the hollow shaft 6 movably in the axial direction. The bearing body 6 is a coil spring 9
It also serves as a support seat. Reference numeral 22 is a rubber stopper provided on the hollow shaft 6.

Reference numeral 12 denotes a cylinder head of the damping device 14, which closes one end of a hollow chamber 27 between the hollow shaft 6 and the bearing body 26. The cylinder head 12 is provided with an orifice 15. Reference numerals 11 and 13 are O-rings. The other end of the hollow chamber 27 is substantially closed by the bearing 25. The upper end of the cylinder head 12 is in contact with the cut portion of the hollow shaft 6. The lower end of the cylinder head 12 is provided with a bolt 19 via a cylinder 16, a seat 17, a disc spring 18, and a seat 19c.
It is held by. Reference numeral 10 denotes a rubber stopper provided on the bearing body 26. A power cable 33 is connected to the seat 19c and is fixed to the cover 4 with bolts 31.

The assembly of such a structure will be described. After mounting the mounting plate 8 on the sliding plate receiver 5 to which the sliding plate 3 is mounted, the assembly is placed on the cover as shown in FIG. The following parts are assembled with the lower part of FIG. 1 facing upward. The hollow shaft to which the cover 23 is attached is inserted, then the bearing 26 to which the coil spring 9 and the bearing 25 are attached is inserted, and the cylinder head 12, the cylinder 16, the seat 17, the disc spring 18, and the seat 19c.
Is inserted, and the bolt 19 is inserted and screwed. Also, the bolts and nuts 31 and 28 are attached.

According to this structure, the sliding plate 3 moves up and down by the expansion and contraction of the coil spring 9 with respect to the overhead wire 1. The cylinder head 12 also moves up and down as the sliding plate 3 moves up and down. At this time, the amount of air that enters and leaves the air chamber 27 is determined by the orifice 15, so that the air chamber 27 has a damping effect on the expansion and contraction of the coil spring 9. Therefore, when the insulator 36 is forcibly moved up and down by the active control, the contact plate 3 can be made to follow the overhead wire 1 with respect to a high frequency external force of less than 20 Hz.

[0015]

According to the present invention, since the spring mechanism for supporting the sliding plate is supported by the damping means, it is possible to improve the contact following performance with respect to vertical runout of the overhead wire when active control is performed. .

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a contact plate supporting portion according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

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

4 is a front view of the pin of FIG. 1. FIG.

FIG. 5 is a side view of a current collector including the present invention.

FIG. 6 is a plan view of FIG. 5;

7 is a sectional view taken along line 7-7 of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Overhead line, 3 ... Riding plate, 4 ... Airfoil collector cover, 5 ... Riding plate receiver, 6 ... Hollow shaft, 7 ... Pin, 8 ... Mounting plate, 9 ... Coil spring, 12 ... Cylinder head, 14 ... Damping Mechanism, 1
5 ... Orifice, 19 ... Bolt, 24 ... Fine movement spring mechanism,
25 ... Bearing body, 27 ... Air chamber, 33 ... Conductive cable, 3
6 ... Support insulator for insulation.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuyuki Terada, Higashi-Toyoi 794, Higashi-Toyoi, Shimomatsu City, Yamaguchi Prefecture (72) Inventor Toshiaki Makino 794, Higashi-Toyoi, Shimomatsu-shi, Yamaguchi Prefecture Hitachi, Ltd. Inside the Kasado Plant (72) Inventor Iwata Otani 794, Higashitoyoi, Kudamatsu City, Yamaguchi Prefecture Kasado Machinery Industry Co., Ltd.

Claims (1)

[Claims] 1. A current collector comprising a fine movement spring mechanism for supporting a contact plate contacting an overhead line at a plurality of points, and a damping means for supporting the fine movement spring mechanism on a current collecting cover.