JP2817126B2 - Collector boat for current collectors for railway vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collecting boat for a current collecting device for a railway vehicle (hereinafter referred to as a pantograph).

[0002]

2. Description of the Related Art FIG. 3 is a schematic diagram for explaining the operation of a pantograph. In FIG. 3, 1 is a trolley wire, 2 is a current collecting boat, 3 is a boat support device, 4 is an upper frame, 5 is a lower frame, 6 is a main shaft, 7 is a main spring, 8 is a balancing rod, and 9 is an underframe. Is shown.

[0003] In such a mechanism, the main spring 7
The lower frame 5 rises, and the link mechanism composed of the upper frame 4, the lower frame 5, and the balancing rod 8 causes the upper frame 4 to be connected to the upper part of the upper frame 4 via the boat support device 3. The attached current collector boat 2 is pressed against the trolley wire 1 with a constant force. The boat support device 3 usually incorporates a vertically acting spring 3a in order to improve the followability to the trolley wire 1, and the current collector boat 2 is pressed against the trolley wire 1 in a spring supported form. .

Next, a conventional collecting boat will be described with reference to FIGS. FIG. 4 shows a conventional collector boat fixed to a sliding plate. In the figure, 211 is a slide, 212 is an auxiliary slide, 213 is a hull, and 214 is a screw. That is, the boat body 213 is made of metal, and its cross section is a square pipe shape as shown in FIG. 5A, or a boat body 213b as shown in FIG. It has a shape. In such a current collecting boat, the performance of following the trolley wire is mainly determined by the spring structure of the support device and the total mass of the current collecting boat. To improve the following performance, reduce the mass of the entire current collecting boat. There is a need.

FIG. 6 shows a conventional movable slide type current collector boat. In the figure, 221 is a boat body, 222 is a movable boat, 223 is a sliding plate, 224 is an auxiliary sliding plate, 225 is a leaf spring, 226 is a joint member, 227 is a screw, and 228 is a shunt. That is, the movable boat 222 to which the sliding plate 223 is attached is fixed to the boat body 221 via the leaf spring 225, and each movable boat smoothly smoothes the joint of each movable boat even if the trolley wire is displaced right and left. It is connected by a joint member 226 having flexibility by a rubber 226a so as to move. In general, as shown in FIG. 7, the boat body 221 is an aluminum drawn material, and the movable boat 222 is a sheet metal bent product. Current shunt 228
Through the movable boat 222 to the boat body 221.

[0006] In such a movable sliding plate system, each sliding plate portion is spring-supported, and each sliding plate is connected by a joint member. The mass of the sprung part, which can move alone and is in direct contact with the trolley wire, will be very small. For this reason, the followability to the trolley wire is remarkably improved as compared with the fixed plate type boat. The effect is particularly remarkable in a high-speed region of the vehicle.

[0007]

However, such a conventional pantograph current collecting boat has the following problems. (1) In the conventional current collector boat with fixed slider, it is difficult to reduce the weight of the slider itself, even if the overall mass is reduced in order to improve the followability in response to the recent speeding up of vehicles. Has become. In addition, although the conventional movable plate-type current collector boat has excellent follow-up performance, the structure is complicated and the number of parts is large, so the production cost is high and there are many factors that cause failures. The mass was also larger than the fixed boat.

(2) In any of the current collecting boats shown in FIGS. 4 and 6, when running in the snow, snow adheres to the front of the hull, and the substantial lifting force is reduced by the weight of the attached snow. Therefore, the following performance is deteriorated, a large derailment is generated, and in some cases, the pantograph lowers during traveling. (3) In addition, in any of the current collector boats shown in FIGS. 4 and 6, since the boat body is made of a metal, the boat body is gradually damaged by a wire break arc during traveling, the strength is reduced, and the life is short. .

(4) In the current collector boat of the pantograph, in a conventional current collector boat in which the material of the boat body attached to the trolley wire is metal, corrosion of the boat body due to salt damage is remarkable particularly in a vehicle running on the shoreline. The life of the hull may be extremely short.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and in particular, has a boat body made of carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (G).
It is composed of a strip of high-strength material having elasticity of FRP), and the sliding plate is structured to be directly attached to the boat body.

[0011]

With this construction, the boat body itself can be used as a leaf spring with the supporting portions at both ends as supporting points, and can have a spring action in the vertical direction. It has the same vertical vibration characteristics as the one supported, and the CFRP has a specific gravity of about 1.7 and the mass of the current collector boat is small. It is possible to have a following characteristic comparable to that of a sliding plate type.

On the other hand, since the strength of CFRP itself is as high as that of spring steel, it has sufficient strength to be practically used as a boat body even in the form of a strip. Further, since the boat body is in the shape of a band plate, the projected area in the vehicle traveling direction is much smaller than that of the conventional current collector boat, and less snow adheres to the current collector boat while traveling in snow. Furthermore, CFRP has much lower conductivity than metal, so that the disconnection arc does not fly to the hull and corrosion due to salt damage does not occur.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the drawings. FIG. 1 shows a main configuration of the present invention.
Reference numeral 10 denotes a boat body made of CFRP, 12 denotes a conductive floor plate, and 13 denotes a ground plate. Here, a support fitting 11 for connecting to the boat support is fixed to the boat body 10 by rivets 16, a floor plate 12 is laid on the upper surface of the boat body 10, and a slide plate 13 and an auxiliary slide plate 14 are placed thereon.
Are fixed by screws 15. The boat body 10 made of CFRP has a simple strip shape, and the width and thickness of its cross section can be appropriately determined according to the required boat strength and the vertical vibration characteristics as a current collector boat. This is an example of a bullet train pantograph with a width of 40 (mm) and a thickness of 4 to 6 (mm).
It is about.

With such a configuration, the operation is as follows. The boat body 10 is attached to and supported by the boat support at the mounting hole portion 11a of the support fitting 11. The hull 10 is CFR
Since it is a band-shaped plate made of P, both the second moment of area and the section modulus are large in the front-rear direction, but small in the vertical direction. For this reason, in combination with the low elastic modulus of CFRP, the hull performs a spring action to improve the vertical direction.
Although this spring action is slightly restricted by the rigidity of the slide plate, the spring action is optimized at that time. This is shown in FIG.

FIG. 2 shows the follow-up characteristics of the pantograph, wherein the horizontal axis represents the vibration frequency and the vertical axis represents the amplitude that can be followed. FIG. 2 shows an example in which a current collector boat portion of a pantograph is vibrated up and down by a sine wave with a simulated overhead line, and a range in which the pantograph follows the simulated overhead line is examined. In the drawing, as far as the lower side of the curve can follow, the wider this portion is, the better the following performance is.

In FIG. 2, a characteristic curve CH1 is a characteristic of the configuration of FIG. 1, and a peak portion of 20 to 40 (Hz) is where the following amplitude is increased by the spring action of the CFRP boat body. In addition, the characteristic curve CH21
Also, the characteristic curve CH22 of the movable slide boat is shown at the same time, and it can be seen that the CFRP boat has the same characteristics as the movable slide boat.

Although the present embodiment is based on CFRP, a GFRP may be used in place of the CFRP. For example, the present invention can be used for a low-speed vehicle that does not require much strength. Needless to say, there is.

[0018]

According to the present invention as described in detail above, the following effects are obtained. (A) The hull itself has elasticity, which makes it a ternary system with a simple structure and high follow-up performance. (B) The structure is simple, lightweight, and easy to maintain. (C) The number of parts is small and production is easy. (D) Long life with no wear due to arcing during wire breakage. (E) The projected cross-sectional area in the vehicle traveling direction is small, and there is little snow adhesion during traveling. (F) No hull corrosion due to salt damage. (G) Further, since the projected area is small, the drag due to the traveling wind at the time of high-speed traveling is small, and the load acting on the pantograph framework can be reduced, which also contributes to the reduction of the vehicle traveling resistance. (H) Furthermore, since the projection area is small, the occurrence of air turbulence during high-speed running is small, which contributes to the reduction of aerodynamic noise.

[Brief description of the drawings]

[0019]

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

FIG. 2 is a curve diagram showing a follow-up characteristic of a pantograph.

FIG. 3 is a schematic diagram of a pantograph.

FIG. 4 is a front view showing an example of a conventional current collecting boat.

FIG. 5 shows a specific example of FIG. 4 (AA);
It is sectional drawing.

FIG. 6 is a front view showing another example of a conventional current collecting boat.

FIG. 7 is a cross-sectional view (BB) of FIG. 6;

[0020]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Trolley wire 2 Current collecting boat 3 Boat support device 10 Hull 11 Support bracket 12 Laying plate 13 Slipping plate 14 Auxiliary sliding plate 15 Screw 16 Rivets CH1 characteristic curve CH21 characteristic curve CH22 characteristic curve

Claims (2)

(57) [Claims] 1. A current collector for a railway vehicle which presses a current collector attached to a trolley wire via a boat support device at the time of current collection, wherein a hull of the current collector is formed by a solid thin band plate. A current collector for a railway vehicle current collector, wherein members for coupling to the boat support device are attached to both ends of carbon fiber reinforced plastic so that the boat itself has an elastic function. . 2. A current collector for a railway vehicle which presses a current collector attached to a trolley wire through a boat support device at the time of current collection, wherein the hull of the current collector is formed of a solid thin band plate. A current collector for a railway vehicle current collector, wherein members for coupling to the boat support device are attached to both ends of glass fiber reinforced plastic so that the boat itself has an elastic function. .