JPH08237803A - Current collector for railway vehicle - Google Patents

Abstract

PURPOSE: To provide a current collector, for a railway vehicle, by which air resistance and noise are small during high-speed running operation, which is small and lightweight and whose strength is sufficient. CONSTITUTION: A collector member 21 which is bow-shaped and whose cross section is wing-shaped is installed at the uppermost part of a current collector, and it comes into contact with a trolley wire T. One pair of upper frames 22 are attached to the rear surface of the collector member 21 so as to be separated from the symmetric center by a prescribed distance, and they are coupled by hinges 24. The upper frames 22 and one pair of lower frames 23 are coupled by hinges 25. The lower frames 23 are shaft-supported on the roof 20 of a vehicle by hinges 26. The respective hinges 24, 25, 26 function to perform a coupling operation in such a way that their angle is freely displaceable inside a face perpendicular to the advance direction of the vehicle, the angle of inclination of the lower frames 23 and that of the upper frames 22 are changed by adjusting the angle of the lower frames 23, and the collector member 21 is displaced in the up-and-down direction accordingly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway vehicle current collector for contacting a trolley wire to supply electric power.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing an example of a conventional pantograph. A bow-shaped current collector boat 1 is provided at the top of the pantograph, and a contact plate 2 that is in contact with the trolley wire T is fixed to the upper surface of the current collector boat 1. The current collector boat 1 is supported by an upper frame 3 and a lower frame 4 made of a plurality of rod-shaped members, and the vertical position is adjusted by a link mechanism. Upper frame 3
The collector boat 1 and the collector boat 1 are connected by a spring 8, and the angle of the collector boat 1 is elastically regulated. The lower frame 4 is integrated with a main shaft 5, one main shaft 5 is driven by a lowering cylinder 9, and the other main shaft 5 is elastically restricted by a main spring 10. The main shaft 5 is supported by the mounting plate 6, and the lowering cylinder 9
And the main spring 10 is fixed. Main spring 10 is collector boat 1
Is urged against the trolley wire T with a constant force. The lowering cylinder 9 holds the main spring 10 when the pantograph is stored.
It has a function of lowering the current collecting boat 1 downward against the above. The mounting plate 6 is supported by an insulator 7 for electrically insulating the roof 11 of the vehicle.

In such a pantograph, the cross sections of the upper frame 3 and the lower frame 4 are circular, and the other components are not so much considered with respect to the air resistance during traveling, and wind noise and noise during high speed traveling and Since the vibration is extremely large, it is not suitable for high-speed vehicles.

FIG. 5 is a perspective view showing another example of a conventional pantograph. In order to suppress air resistance and noise during high-speed traveling, the current collecting boat 1 has a blade cross-sectional shape along the traveling direction, and the support column 12 and the storage column 13 that support the current collecting boat 1 are further provided.
Also has a blade cross-sectional shape along the traveling direction. The support column 12 is slidably accommodated in the storage column 13, and the vertical position and the urging force to the trolley wire T are adjusted by an internal slide mechanism.

In such a pantograph, the air resistance is certainly reduced and the noise is reduced. However, since the mounting area between the column 12 and the current collecting boat 1 is small, the second moment of area of the column 12 is small, and the structure is supported only at the center of the current collecting boat 1, the trolley wire T is displaced left and right relatively. At this time, the bending moment largely acts on the mounting portion of the support column 12, resulting in insufficient strength. Therefore,
In order to obtain sufficient strength, the pillar 12 cannot be made so thin that the air resistance is increased accordingly. Further, since the support column 12 and the storage column 13 are sliding mechanisms, when a large wind force acts on the current collecting boat 1 and the support column 12 during traveling, the sliding resistance between the support column 12 and the storage column 13 increases and the vertical movement occurs. Becomes difficult. Furthermore, if an attempt is made to increase the adjustment range of the column 12, an extra storage space is required inside the vehicle.

FIG. 6 (a) is a side view showing still another example of a conventional pantograph, and FIG. 6 (b) is a front view thereof. The collector boat 1 has a blade cross-sectional shape along the traveling direction,
Further, the upper frame 3 and the lower frame 4 supporting the current collecting boat 1 also have a blade cross-sectional shape along the traveling direction. The current collecting boat 1 and the upper frame 3, the upper frame 3 and the lower frame 4, and the lower frame 4 and the roof 11 are hinged to each other.
Each hinge 14 has a rotation angle adjusting mechanism and a biasing mechanism for biasing in a constant rotation direction. When the rotation angle adjusting mechanism of the hinge 14 operates, the upper frame 3 and the lower frame 4 are angularly displaced in a plane parallel to the vehicle traveling direction, and the height of the current collecting boat 1 is adjusted.

As another prior art, there is disclosed a pantograph in which noise is reduced by providing periodic unevenness on a pantograph frame tube (Japanese Patent Laid-Open No. 59-169302).

[0008]

However, in the pantograph of FIG. 6, as in the case of FIG. 5, the mounting area of the current collecting boat 1 and the second moment of area of the upper frame 3 and the lower frame 4 are small, and the trolley wire Insufficient strength of T against side shake.
Moreover, since each hinge 14 requires a rotation angle adjusting mechanism and a biasing mechanism, the hinge 14 inevitably becomes large in size, which causes an increase in air resistance.

An object of the present invention is to provide a current collecting device for a railway vehicle, which has low air resistance and noise during high-speed traveling, and is small in size and light in weight and has sufficient strength.

[0010]

SUMMARY OF THE INVENTION The present invention has a blade cross-sectional shape along the vehicle traveling direction, a current collecting member that comes into contact with a trolley wire, and a blade cross-sectional shape along the vehicle traveling direction. A pair of an upper frame and a lower frame for supporting the electric member at predetermined intervals, a current collecting member and an upper frame, an upper frame and a lower frame, and a lower frame and a vehicle roof in a plane perpendicular to the vehicle traveling direction. A railway vehicle current collecting device comprising: a connecting member that is connected to each other so as to be freely angularly displaced.

[0011]

According to the present invention, since the current collecting member, the upper frame and the lower frame have the blade cross-sectional shape along the traveling direction of the vehicle, the air resistance at the time of high speed running becomes small, and noise and vibration can be reduced. become. Further, since the current collecting member is supported by the pair of upper and lower frames at predetermined intervals, sufficient strength can be obtained even if the trolley wire T laterally shakes. Moreover, since the second moment of area of the upper frame and the lower frame increases in the vehicle traveling direction, sufficient strength against wind force can be secured.

Further, since the current collecting member, the upper frame, the lower frame and the vehicle roof are connected to each other so as to be angularly displaceable in a plane perpendicular to the traveling direction of the vehicle, air resistance is kept small. The height of the current collecting member can be easily adjusted. Further, by supporting the current collecting member with the pair of upper and lower frames, the angle of the upper frame can be adjusted only by providing the rotation angle adjusting mechanism on the lower frame, and therefore the mechanism of the movable part can be simplified. .

[0013]

1 is a perspective view showing an embodiment of the present invention, FIG. 2 (a) is a side view thereof, and FIG. 2 (b) is a front view thereof. A bow-shaped current collecting member 21 is provided on the uppermost part of the current collecting device, and a contact plate (not shown) having a high contact strength with the trolley wire T is fixed to the upper surface of the current collecting member 21. The current collecting member 21 has a blade cross-sectional shape along the vehicle traveling direction,
It is formed so that the air resistance at the time of high-speed traveling becomes small.
Both ends 21a of the current collecting member 21 are bent downward in a smooth curve, and are gradually tapered to prevent turbulent air flow.

A pair of upper frames 22 are provided on the lower surface of the current collecting member 21.
Is mounted at a predetermined distance from the center of symmetry and hinge 24
Are linked by. The upper frame 22 and the lower frame 23 are connected by a hinge 25. The pair of lower frames 25 are
A hinge 26 is pivotally supported on the roof 20 of the vehicle. The lower frame 25 and the hinge 26 are electrically insulated from the vehicle with an insulator or the like. Each hinge 24, 25,
Reference numeral 26 has a function of coupling for angular displacement in a plane perpendicular to the vehicle traveling direction, and the lower frame 23 is operated by the operation of a rotation angle adjusting mechanism (not shown) that adjusts the angle of each lower frame 23. Of the upper frame 22 changes, and the inclination angle of the upper frame 22 also changes accordingly.

The lower frames 23 are linked by a link mechanism or the like so as to rotate in mutually opposite directions. For example, when the lower frames 23 change in the opening direction, the upper frames 22 also expand and eventually the current collecting member 21. Will be displaced downward. On the contrary, when the lower frames 23 are changed in the closing direction, the upper frames 22 are also closed and the current collecting member 21 is displaced upward. Also, the lower frame 2
The current collecting member 21 is biased with a constant pressing force against the trolley wire T by providing elasticity in the direction in which the three are closed. In this way, only by providing the rotation angle adjusting mechanism on the lower frame 23, the height of the current collecting member 21 can be adjusted, and the movable part can be downsized and the air resistance can be reduced. In addition, since this current collector is symmetrical in the front-rear direction, it can travel under the same conditions whether the railway vehicle moves forward or backward.

FIG. 3 is a cross-sectional view showing some examples of blade cross-sectional shapes. A cross section of the current collecting member 21 taken along the line AA, a cross section of the upper frame 22 taken along the line BB, and a cross section C-C of the lower frame 23.
By adopting the blade cross-sectional shape as shown in FIGS. 3A to 3D as the cross section along the line, the air resistance during high speed running can be reduced.

FIG. 3A shows an elongated rectangular cross section, which is advantageous in that it can be easily manufactured. FIG. 3B shows a curved end surface of the rectangular cross section of FIG. 3A.
FIG. 3C shows an end surface of the rectangular cross section of FIG. 3A, which is finished in a triangular shape. In both cases, air separation is less and air resistance is smaller than in FIG. 3A. FIG. 3D is an elliptical cross section having a large flatness, and although it is slightly difficult to manufacture, air resistance becomes smaller. Note that these cross-sectional shapes are just examples, and the present invention may have other blade cross-sectional shapes.

[0018]

As described above in detail, according to the present invention, the air resistance during high-speed traveling is reduced, noise and vibration can be reduced, and the strength and strength of a railway vehicle can be reduced even if it is small and lightweight. A current collector can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

2A is a side view of an embodiment of the present invention, FIG.
(B) is the front view.

FIG. 3 is a cross-sectional view showing some examples of blade cross-sectional shapes.

FIG. 4 is a perspective view showing an example of a conventional pantograph.

FIG. 5 is a perspective view showing another example of a conventional pantograph.

6 (a) is a side view showing still another example of a conventional pantograph, and FIG. 6 (b) is a front view thereof.

[Explanation of symbols]

 20 roof 21 current collecting member 22 upper frame 23 lower frame 24, 25, 26 hinge

Claims (1)

[Claims] 1. A current collector having a blade cross-section along the vehicle traveling direction and contacting the trolley wire, and a blade cross-section along the vehicle traveling direction for supporting the current collector at predetermined intervals. A connection for connecting a pair of upper and lower frames, a current collecting member and an upper frame, an upper frame and a lower frame, and a lower frame and a vehicle roof such that they can be angularly displaced in a plane perpendicular to the vehicle traveling direction. A current collector for a railway vehicle, comprising: a member.