JPH07264704A - Current collecting device - Google Patents

Abstract

PURPOSE:To provide a current collecting device which has excellent follow-up to a trolley wire and excellent low noise characteristics in the case of a high speed traveling. CONSTITUTION:The current collecting device comprises a current collector 4 of a swept-back wing type in which a section is formed in a wing shape and its both ends are retracted with respect to a traveling direction, and a follow-up mechanism for following up a semi-elliptical slider 3 mounted at an upper part of the collector 4 along a crest 8 of the collector 4 to a trolley wire, wherein follow-up characteristics to the wire are improved, and much low noise can be performed. Thus, the device in which the follow-up characteristics to the wire and which has excellent low noise characteristics in the case of a high speed traveling can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collector used for a high-speed train, and more particularly to a low noise current collector suitable for a high-speed train traveling at 300 km / h or more.

[0002]

2. Description of the Related Art Recently, as the traveling speed of high-speed trains such as the Shinkansen (270 km / h to 300 km / h to 350 km / h) has increased, aerodynamic noise from a current collector has increased, and at the same time, the sliding plate and overhead lines have Current collection performance due to contact current collection tends to decrease. Therefore, there has been proposed a new type current collector aiming to reduce noise and maintain current collecting performance. Such a device is disclosed in Japanese Utility Model Publication No. 5-25902. This member has a wing type member that supports the contact plate in contact with the overhead wire. A wing-shaped member that supports the contact plate is called a current collector.

[0003]

The above-mentioned new-type current collector using the wing-type current collector can significantly reduce noise as compared with the conventional pantograph. However, since the shape of the current collector is symmetrical in the running direction and the vertical cross-sectional shape is substantially the same in the width direction of the vehicle body, it is considered to be another step in terms of noise reduction.

An object of the present invention is to provide a low noise current collector. A second object of the present invention is to provide a current collector having low noise and good current collecting performance. A third object of the present invention is to provide a current collector having lower noise and good current collecting performance.

[0005]

In order to solve the above-mentioned problems, the present invention provides that the thickness of the longitudinal section is temporarily reduced toward the rear, and the thickness of the blade is gradually reduced toward the blade tip side in the width direction. And then
A current collector whose both ends in the width direction recede with respect to the front end of the central part, and a sliding plate installed in the central part in the width direction along the peaks of the upper surface of the current collector, The scraper plate is characterized in that the current collecting device is configured by providing the widthwise end portion so as to recede with respect to the central portion.

For the second purpose, the sliding plate is characterized in that the upper surface from one end to the other end in the width direction is arranged on a horizontal line.

For the third object, the thickness of the longitudinal section is temporarily reduced toward the rear, and the thickness of the blade is gradually reduced toward the blade tip side in the width direction. A current collector in which both ends of the current collector recede with respect to the front end of the central portion, and an upper surface of the current collector, which is installed in the central portion in the width direction and from one end to the other end in the width direction. Is formed on the horizon, and the end portion in the width direction of the contact strip recedes with respect to the central portion, and the upper surface of the contact plate to the upper surface of the current collector. The current collector is characterized in that the vertical heights are the same in the width direction.

[0008]

In the structure for the first object, since the current collector of the retreating wing is used, the frequency of the sound due to the Karman vortex in the wing is dispersed by making the flow of the airflow at high speed three-dimensional. Since it is possible to eliminate the outstanding frequency, it is possible to further reduce the noise and
Since the contact strips are provided along the peaks of the swept back blades, the amount of protrusion of the contact strips from the current collector can be reduced, and noise can be reduced.

In the configuration for the second object,
Since the upper surface of the contact plate is located on the horizontal line from one end to the other end in the width direction, the position of the overhead wire relative to the contact plate is the same regardless of the position in the width direction. The control can be easily performed and the current can be easily collected.

In the configuration for the third object,
In addition to the above, since the vertical height from the upper surface of the current collector to the upper surface of the contact plate is the same in the vehicle width direction, the amount of protrusion of the contact plate from the current collector in the width direction can be the same and small, and It is possible to reduce noise.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2, both ends (the rear end side in the traveling direction) of the current collector in the width direction (the direction perpendicular to the traveling direction, that is, the vehicle width direction) are bent downward. Therefore, the bent portion should be shown in FIG. 1 which is a side view and FIG. 2 which is a plan view, but it is omitted.

In the current collector 2, the thickness of the vertical cross section decreases for a while toward the rear, and the outer shape in the vertical cross section is almost vertically symmetrical (this is called a wing), and it is located on the wing tip side in the vehicle width direction. The thickness of the blade gradually decreases toward the front, and further, both ends in the width direction recede with respect to the front end of the central portion (referred to as a delta blade current collector or a receding blade current collector) 4. Along with the ridge 8 on the upper surface of the current collector 4 (the highest position in the vertical cross section of the current collector 4), the arched sliding plate 3 installed in the central portion in the width direction, and also along the ridge 8. Fixed guide members 7, 7 arranged as a set, an insulating support insulator 5 for supporting the current collector 4 in an insulated state, and a fine movement spring mechanism 1 for making the sliding plate 3 follow the overhead wire 1.
It consists of 0 and 10. The wing tip of the current collector 4 hangs downward. The sliding plate 3 is elastically supported by a fine movement spring mechanism 10 which is fixedly supported inside the current collector 4, and moves vertically with respect to an external force. The electric power of the overhead wire 1 is guided to the vehicle side via the contact plate 3, the current collector 4, and a flexible cable (not shown) connected to the current collector 4. A support mechanism (not shown) is provided below the support insulator 5 to move the support insulator 5 up and down to cause the contact plate 3 to follow the overhead wire 1.

The sliding plate 3 is installed for collecting electricity,
The installation position of the sliding plate 3 in the width direction of the vehicle is a range in which the overhead line 1 moves during normal high-speed traveling of the vehicle. From both ends of the contact plate 3 to the end of the current collector 4, that is, the installation positions of the fixed guide members 7, 7 are the range in which the overhead line 1 is located when the vehicle travels at a low speed on a turnout or a small radius track. Is.
The fixed guide members 7 and 7 are used for the overhead line 1 during such unsteady traveling.
Is a member that supports the current collector 4, and prevents the current collector 4 from being damaged and guides the overhead wire 1 to the sliding plate 3.

The front end of the central portion of the current collector 4 in the width direction is linear along the width direction. Since the contact strips 3 are arranged along the ridges on the upper surface of the current collector 4, they have an arched shape. That is, the first sliding plate portion 3 parallel to the straight portion of the front end of the current collector 4
It is composed of a and a second sliding plate portion 3b which is retracted rearward at both ends thereof. The first sliding plate portion 3a and the second sliding plate portion 3b are integrated. The thickness of each part of the sliding plate 3 in the traveling direction is substantially the same, and it has an arched shape.
The sliding plate 3 is elastically supported by the fine movement spring mechanism 10 at the connecting portion between the first sliding plate portion 3a and the second sliding plate portion 3.

As is apparent from FIG. 3, in the vehicle width direction, the upper surface of the sliding plate 3 from one end side to the other end side in the width direction is located substantially on the horizontal line. The range located on this horizontal line is the range in which the overhead line 1 is located during normal high-speed running of the vehicle. A fixed guide member 7 is provided at the end of the sliding plate 3.
It inclines downward from near the junction with. Also,
The upper surface of the current collector 4 around the installation position of the sliding plate 3 is the sliding plate 4
3 is parallel to the upper surface.

In FIG. 3, a indicates a center line of the current collector 4 in the vertical direction (thickness direction). The center position of the current collector 4 in the vertical direction is compared with the center position in the vertical direction at the center position in the width direction (installation position of the supporting insulator 5) and the center position in the vertical direction at the end portion 4d side in the width direction. , The latter is located above. The range of L1 is a straight line portion in which the front end of the current collector 4 is parallel to the width direction in FIG. Since this portion is substantially vertically symmetrical, the center line a and the upper surface of the current collector 4 are located on the horizontal line. L2
The range of L3 is a portion where the front end of the current collector 4 is retracted. The range of “L2 to L1 to L2” is the range in which the sliding plate 3 is installed. Although the wing shape of the portion L2 should be vertically symmetrical, the upper surface of L2 is provided at the same height as the upper surface of L1. That is, the upper surfaces of “L2 to L1 to L2” are on the horizontal line. The lower surface of L2 connects L1 and L3 with a straight line. Therefore, the vertical center of the L2 portion is located above the L1 portion. Therefore, the height at which the contact plate 3 projects from the current collector 4 is the same in the width direction. That is, in the range where the contact plate 3 is installed, the center position in the up-down direction is raised above the center position 4a in the width direction as indicated by the alternate long and short dash line a as the front end of the current collector 4 recedes. Since the lower surface of L2 is inclined, the projected area is reduced, the air resistance is reduced, and noise can be reduced. In the range of L3, the upper surface is provided with a slight downward slope with respect to L2. The tip side of L3 is bent further downward. The vertical position of the rear end of the current collector 4 in the range of “L3 to L2 to L1 to L2 to L3” is on the center line a.

The fixed guide member 7 is a plate made of aluminum alloy, and is fixed to the cover made of aluminum alloy on the upper surface side of the current collector 4 by rivets. The upper surface of the fixed guide member 7 is inclined along the upper surface of the current collector.

In FIG. 4, the cover 41 forming the upper surface side of the current collector 4 is made of an aluminum alloy. Cover 41
Inside, the contact plate 3 is housed, and a mounting portion 42 for mounting the fine movement spring mechanism 10 and a mounting portion 43 for the support insulator 5 are provided. These are made of aluminum alloy and also serve as strength members for the current collector 4. The mounting portion 42 surrounds the periphery of the sliding plate in order to limit the entry of wind and snow into the cover 41. The cover 46 forming the lower surface side of the contact plate current collector 4 is made of CFRP (carbon fiber reinforced composite material). The cover 41 may also be a CFRP cover to which an aluminum alloy plate is attached by rivets or the like. The covers 41 and 46 are joined by rivets via a suitable reinforcing member. A repair hole 47 and a lid 48 are provided on the lower surface of the cover 46 so that the fine movement spring mechanism 10 can be repaired.

A detailed view of the connecting portion between the sliding plate 3 and the fixed guide member 7 will be described with reference to FIGS. The contact plate 3 is formed by stacking a plurality of iron-based sintered alloy plates and joining them with rivets. The contact plate 3 is attached to a channel-shaped seat 31 with screws 32. The seat 30 provided with the seat 31 is elastically supported by a fine movement spring mechanism. The seats 31 and 30 are made of aluminum alloy. A longitudinal section is almost T at the widthwise end of the contact plate 3.
There is a shaped guide, which is attached to the seat 31 with screws 35. One piece 33a of the guide 34 on the sliding plate 3 side is the seat 3
It is listed in 1. The other piece 33b projects toward the fixed guide member 7 side and descends downward. A space is formed below the protruding piece 33b. The upper surface of the guide 33 has an arc shape that is inclined toward the fixed guide member 7 side. The fixed guide member 7 is fixed to the cover 41 of the current collector 4 with rivets (not shown). The guide 46 between the fixed guide member 7 and the guide 33 is fixed to the cover 41 with screws 47 and 48.
The protruding piece 46a of the guide 46 is bent downward and is inserted into the recess of the protruding piece 33b of the guide 33. The upper surface of the guide 46 has an arc shape. Like the connecting portion between the guide 33 and the guide 46, one connecting member between the sliding plate 3 and the guide 33 and the connecting portion between the guide 46 and the fixed guide member 7 has a convex shape and the other member has a convex shape. Is concave.

The fine movement spring mechanism 10 is composed of a coil spring for supporting and guiding the arched slide plate 3 and a sliding portion.

FIG. 6 shows a detailed view of the seat 31 which supports the sliding plate 3. The seat 31 has a U-shaped cross section, and has a structure that is light and strong against an impact generated when the seat 31 comes into contact with the overhead wire 1.

The fine movement spring mechanism 10 will be described with reference to FIG. The contact plate 3 is fixed to a channel-shaped seat 31. The seat 31 is fixed to the central axis 36a of the linear guide 36 with a screw. The cylindrical body 36b of the linear guide 36 that supports the central shaft 36a is attached to the rigid attachment portion 42 from below with a screw 39. The mounting portion is fixed to the support insulator 5. A spring 37 is arranged between the upper end of the central jig 36a and the cylindrical body 36b. The spring 37 is a cylindrical body 36b
Outside of. The linear guide 36 constitutes a sliding portion by the central shaft 36a and the cylindrical body 36b. The central shaft 36a and the mounting portion 42 are connected by a flexible cable 44 for power supply. The flexible cable 44 is fixed to the central shaft 36a by screws 36d. Flexible cable 44
The fixing on the side of the mounting portion 42 is also used as a screw 39 for mounting the tubular body 36b on the mounting portion 42. Linear guide 3
6 and the mounting portion 42 are made of metal. The mounting portion 42 is connected to the vehicle side by a flexible cable (not shown). The fixed support member 7 is also electrically connected to the mounting portion 42.

In this structure, since the retreat blades are used as the current collector 4, the flow of the air flow during high speed traveling is 3
By making it dimensionally, it is possible to disperse the frequency of the sound due to the Karman vortex in the wing and eliminate the outstanding frequency, so that it is possible to further reduce the noise and also to the overhead line 1 along the peak of the swept wing. Since the contact strip 3 is provided,
It is possible to reduce the noise by reducing the protrusion amount of the upper surface of the contact plate 3 from the current collector 4. Further, since the ridges of the current collector 4 at the installation portion of the sliding plate 3 are configured horizontally, the protruding amount of the sliding plate 3 can be made uniform in the width direction, and as a result, the protruding margin of the sliding plate 3 can be reduced. , Which can reduce the noise. Further, since the ridges and the sliding plates 3 are provided in a retracted manner and the upper surfaces of the ridges and the sliding plates 3 are horizontal, the width of the sliding plates 3 can be increased, and no matter where the overhead line 1 is located, The upper and lower amounts of the sliding plate 3 can be made the same, and the followability to the overhead wire 1 can be improved.

FIG. 8 shows the relationship between the current collector 4'and the contact plate 3'for comparison. Regarding the thickness of the current collectors 4 and 4'in the vertical direction, the central position in the vehicle width direction (the installation position of the support insulator 5) is the thickest and the blade tip side in the width direction is the thinnest. In this case, the current collector 4 ′ is provided with the vertical center of the blade tip on the horizontal line with reference to the vertical center position of the widthwise center position (installation position of the support insulator 5). . According to this, the upper and lower centers of the current collector 4'are horizontal straight lines as indicated by the alternate long and short dash line b. According to this, since the upper surface of the current collector 4 ′ is lowered toward the wing tip, it is attempted to cover this descending portion with the sliding plate 3 ′ (the upper surface of the sliding plate 3 ′ is made horizontal. ), The protrusion margin of the contact strip 3'at the wing tip side is large. If the protrusion margin on the blade tip side is made small (the upper surface of the contact plate is made parallel to the upper surface of the current collector), this downward movement must be compensated by the fine movement spring mechanism or control device, and the fine movement spring mechanism becomes large. Become
The control system becomes complicated. This problem becomes important especially when trying to predict the displacement of the overhead line in active control. Therefore, the fact that the surface of the contact plate 3 is horizontal has the effect of simplifying the control.

Further, since the fine movement spring mechanism 10 is provided in the vicinity of the inflection point of the sliding plate 3, it can be supported by a small number of fine movement spring mechanisms 10.

Another embodiment of the present invention is shown in FIG. Parts having the same purpose in the above embodiment are indicated by a dash in the part number. A big difference from the embodiment of FIG. 2 is that a boomerang type swept wing current collector 4 ′ is used as the current collector 4, and the bow-shaped contact plate 3 ′ has a curved shape due to the change of the wing shape. There is.

By using such a boomerang type, it is possible to obtain the same effect as in the previous embodiment, and to reduce the lift force generated by the flow of air acting on the blade-shaped current collector 4'by reducing the blade cross-sectional area. it can.

Further, as compared with the shape shown in FIG. 2, since the central portion on the rear side in the traveling direction has a curved and concave shape, the projected area is reduced, that is, the current collector as a whole has the same shape as that of the above embodiment. Since it can be formed smaller than the conventional one, it is possible to reduce the weight. Since the curved portion forms a receding blade having a streamlined shape similar to the cross-sectional shape shown in FIG. 1, the flow of air is not disturbed, and noise is not increased as compared with the above embodiment.

[0029]

According to the present invention, it is possible to provide a current collector having good followability to overhead lines and excellent noise reduction.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a current collector of the present invention.

FIG. 2 is a side view of an embodiment of the current collector of the present invention.

FIG. 3 is a front view showing an embodiment of the current collector of the present invention.

FIG. 4 is a vertical sectional view of a current collector according to an embodiment of the present invention.

FIG. 5 is a detailed vertical cross-sectional view of an arched friction plate and a fixed guide member according to an embodiment of the present invention.

FIG. 6 is a plan view of a sliding plate receiver according to an embodiment of the present invention.

FIG. 7 is a vertical sectional view of a fine movement spring mechanism according to an embodiment of the present invention.

FIG. 8 is a front view of a current collector for comparison with the present invention.

FIG. 9 is a plan view of a low noise current collector according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Overhead line, 2 ... Current collector, 3 ... Bow-shaped scraping plate, 4 ... Current collector, 5 ... Insulator support insulator, 7 ... Fixed guide member, 8 ... Peak,
10 ... Fine movement spring mechanism, 30, 31 ... Seat.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kuniyoshi Hara Kuniyoshi Hara 794 Higashi-Toyoi, Kudamatsu City, Yamaguchi Prefecture Stock company Hitachi Kasado Factory (72) Inventor Toshiaki Makino 502 Kintatemachi, Tsuchiura, Ibaraki Japan Co., Ltd. (72) Inventor, Akiyoshi Iida, 502 Jinritsucho, Tsuchiura-shi, Ibaraki, Japan (72) Inventor, Katsuyuki Terada, 794, Higashi-Toyoi, Kudamatsu City, Yamaguchi Prefecture Hitachi Kasado Engineering Co., Ltd. In-house (72) Inventor Kazuo Aizu, Higashi-Toyoi, Higashi-Toyoi, Shimomatsu City, Yamaguchi Prefecture Hitachi Kasado Engineering Co., Ltd. (72) Inventor, Riichi Furuya 1-1-1, Aoki, Higashinada-ku, Kobe-shi, Hyogo Shinmeiwa Industrial Co., Ltd. Company Aircraft Division (72) Inventor Tetsu Ikuyama 1-1-1 Aoki, Higashinada-ku, Kobe-shi, Hyogo Shinmeiwa Industry Co., Ltd., Aircraft Division

Claims (7)

[Claims] 1. The thickness of the longitudinal section is gradually reduced rearward,
The thickness of the blade is decreasing for a while toward the blade tip side in the width direction,
Further, it comprises a current collector whose both ends in the width direction recede with respect to the front end of the central portion, and a sliding plate installed in the central portion in the width direction along the peaks of the upper surface of the current collector. The current collector is characterized in that the end portion in the width direction of the sliding plate is receded with respect to the central portion. 2. The current collector according to claim 1, wherein the upper surface of the sliding plate from one end to the other end in the width direction is located on a horizontal line. 3. The thickness of the vertical cross section decreases for a while toward the rear,
The thickness of the blade is decreasing for a while toward the blade tip side in the width direction,
Further, a current collector whose both ends in the width direction recede with respect to the front end of the central portion, and an upper surface of the current collector, which is installed at the central portion in the width direction, and is arranged from one end in the width direction to the other. A contact plate whose upper surface to the end is located on a horizontal line; and the end part in the width direction of the contact plate recedes with respect to the central part, The vertical height to the upper surface of the current collector is the same in the width direction. 4. The current collector according to claim 3, wherein the current collector is a portion adjacent to the center portion in the width direction and has a vertical center position of a portion where the front end is retracted. The current collector is provided at the same position in the vertical direction as the vertical center position of the center portion in the width direction. 5. The current collector according to claim 3, wherein the current collector has a straight portion having a center portion in the width direction and having a predetermined length along the width direction. The plate is a first sliding plate portion parallel to the straight line portion,
The first sliding plate is provided at both ends of the first sliding plate in the width direction, and includes second sliding plates retracted toward the rear end side in the traveling direction. The current collector, wherein the second scraping plate and the second scraping plate are integrated. 6. The current collecting device according to claim 5, wherein the current collecting device is provided in a vicinity of a connecting portion between the first sliding plate portion and each of the second sliding plate portions. A current collector characterized in that a fine movement spring mechanism for supporting the body is provided. 7. The current collector according to claim 3, which is between both widthwise end portions of the contact strip and both end portions of the front current collector and extends along a ridge on an upper surface of the current collector. And a metal fixed guide member provided in parallel with the upper surface of the current collector.