JP4513114B1 - Railway vehicle current collector - Google Patents

Abstract

It is possible to provide a safe railway vehicle current collector that can prevent an electric shock even when a third rail system is used.
An outer surface of a third rail is insulated and protected by an insulating portion except for a rear surface of an upper flange portion. The current collector 1 is arranged at the lower part of the carriage 2 so that the pair of current collector boats 12 are in contact with and slide on the overhead wire 4 suspended symmetrically on the back surface of the upper flange portion 31a. While the current collector 1 can be reduced in size, air resistance can be reduced.
[Selection] Figure 1

Description

  The present invention relates to a railway vehicle current collector using a third rail system.

In order to supply electric power for driving a railway vehicle, current collection by a third rail method (third rail method) may be used.
For current collection by the third rail system, for example, as shown in Patent Document 1, a third rail that is a power supply rail for supplying power to a railway vehicle is used in addition to the traveling rail. Current collection was performed by sliding and sliding a current collector provided on a carriage of a railway vehicle.

Japanese Patent No. 2689036

  However, in the current collection by the third rail system described above, the positive electrode of the third rail is bare, and even if a track protection fence is provided, there is a risk of electric shock if a person or animal enters. There was a problem that there was.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a safe railway vehicle current collector that can prevent electric shock even when a third rail system is used.

In order to achieve the above object, a railway vehicle current collector according to the present invention comprises:
A pair of outer surfaces excluding at least the rear surface of the upper flange portion of the third rail are covered with an insulating portion, and are respectively in contact with and sliding on two overhead wires suspended symmetrically on the rear surface of the upper flange portion. Current boat,
The pantograph having a pair of extendable and retractable frames arranged at the lower end of the pair of current collector boats, respectively, is disposed at a lower portion of the railway vehicle.

Further, the insulating portions are respectively extended below the overhead wires on both side surfaces of the flange portion above the third rail,
Each of the pair of current collecting boats may have a current collecting receiver portion that is erected while being in contact with and sliding on the overhead wire.

  Further, an overhead wire guide made of a conductive material may be erected on the opposing surfaces of the pair of current collector boats.

  Further, the frame may have a rhombus shape.

  The third rail may be entirely made of an insulating material.

  The insulating material may be fiber reinforced plastic.

  In addition, a plurality of solar cell modules connected in series may be electrically connected to the overhead wire in the vicinity of the third rail.

  ADVANTAGE OF THE INVENTION According to this invention, even if it uses a 3rd rail system, the safe collector for rail vehicles which can prevent an electric shock can be provided.

It is an external view showing the structure of the railcar current collector and the third rail according to the embodiment of the present invention. FIG. 4 is a partially omitted side view of the railway vehicle current collector and the third rail shown in FIG. 1. It is a top view for demonstrating installation of the solar cell module which supplies electric power to the railway vehicle in which the current collector for railway vehicles which concerns on embodiment of this invention is used. It is explanatory drawing for demonstrating the connection method of the solar cell module shown in FIG. It is an external view showing the modification of the railcar current collector which concerns on embodiment of this invention, and the structure of a 3rd rail. It is an external view showing the structure of the other modification of the railcar current collector which concerns on embodiment of this invention, and a 3rd rail.

  A railway vehicle current collector according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the current collector 1 is a current collector that uses a system based on the third rail 3, and is provided at the lower portion of the carriage 2 of the railway vehicle.
The current collector 1 includes a small pantograph 11 and a pair of current collector boats 12 installed at the lower end of the pantograph 11.
When the current collecting boat 12 contacts and slides on the overhead wire 4 suspended from the third rail 3 protected by the insulating portion 32, electric power is supplied to the railway vehicle. The supplied electric power is converted into the rotational force of the motor via the control device, and the railway vehicle travels by rotating the wheels.

The third rail 3 is a rail for supplying electric power to the railway vehicle. The third rail 3 is made of, for example, a fiber reinforced plastic for covering and insulating the outer surface of the main body 31 and a main body 31 which is a conductor having an I-type or H-type cross section formed of a conductive material such as iron or copper. And an insulating portion 32 made of an insulating material such as FRP (Fiber Reinforced Plastics).
Body 31 of the third rail 3, the upper flange portion 31a, is constituted by the web portion 31b and the lower side of the flange portion 31c, the insulating portion 32, the surface and both side surfaces of the upper flange portion 31a, the lower web portion 31b The front surface, the back surface, and both side surfaces of the portion and the lower flange portion 31c are insulated and protected. In FIG. 2, the insulating portions 32 on both side surfaces of the upper flange portion 31a are omitted for easy understanding.
The two overhead wires 4 are respectively suspended from the back surface side of the upper flange portion 31a of the third rail 3 via the overhead wire support portion 5 that is a conductor. The upper flange portion 31a is formed to be slightly wider in order to suspend the two overhead wires 4. The pair of overhead wires 4 are suspended symmetrically along the longitudinal direction of the third rail 3 and sandwiching the web portion 31b.
The two overhead wires 4 and the main body 31 of the third rail 3 are integrated into a conductor.

The current collector 1 is formed by reducing the size of a commonly used current collector having a rhombus-shaped pantograph. For example, the current collector 1 may have a size of 30 to 40% of that generally used.
The small pantograph 11 of the current collector 1 is provided with a pair of telescopic frames 11a composed of four rhombus-shaped upper, lower, left, and right frames, and an elevating device 11b that moves the pair of frames 11a up and down. The rhombus-shaped frames 11a are connected to each other by a connecting rod 11c.
The frame constituting the frame 11a is rotatable around a fulcrum and a connecting portion. The upper end of the frame constituting the frame 11a is rotatably installed on the lifting device 11b, and the lower end of the frame constituting the frame 11a is rotatably installed on the current collecting boat 12.
In addition, the balance of a pair of frame 11a can be stabilized by making the frame 11a into a rhombus shape.
The elevating device 11b includes, for example, a spring and a cylinder (not shown). The spring of the lifting / lowering device 11b is biased by the elastic force in the direction in which the current collecting boat 12 is pulled up via the frame 11a (the direction in which the frame 11a contracts). Due to the urging force of the spring, the current collecting boat 12 comes into contact with the overhead wire 4 and can slide.
Even if there is a change in the distance between the overhead wire 4 and the carriage 2 while the railway vehicle is running, the frame constituting the frame 11a can be rotated to respond to the change in distance freely. The electric boat 12 can be contacted and slid on the overhead wire 4 stably and smoothly.
When lowering the pantograph 11 and the current collector boat 12, the frame 11a is stretched using the air pressure of the cylinder.
A pair of current collecting boats 12 of the current collecting device 1 is similar to a current collecting boat used in a diamond-shaped pantograph that is generally used, and is equally divided into two in the longitudinal direction and rotated 180 degrees, It is installed at the lower end of the frame 11a with a predetermined interval. The distance between the two current collecting boats 12 is preferably about 5 to 15 cm, for example.
The current collector boat 12 has a sliding plate 12 a at a portion that directly contacts the overhead wire 4.

As shown in FIG. 3, a solar cell module 6 is used to supply power to the third rail 3. The solar cell module 6 is arranged and connected in series on a line between the two traveling rails 7 and 8 and the third rail 3 installed in parallel in the center thereof. The solar cell module 6 is disposed close to the third rail 3.
The solar cell module 6 is placed on two gantry long plates 9 arranged side by side. In the two gantry long plates 9, a connecting plate 9a is installed at a portion close to the end. The gantry long plate 9 is supported by a metal support (not shown) erected on the track. The metal strut may be provided with a vibration isolating member for absorbing subsidence and vibration when passing through the railway vehicle, thereby preventing distortion from being generated in the solar cell module 6.
For example, using a solar cell module 6 of 12 VDC and 80 W, sandwiching the third rail 3 and connecting 5 pieces in series and arranging them in two rows, 2 units (enforcement unit) are repeated 5 times. The total 10 units (unit 1 to unit 10) of the solar cell modules 6 are made into one block as shown in FIG. One block can supply 600 VDC and 4 KW of power.
The positive terminal (the positive terminal of the unit 1) 6a of the block of the solar cell module 6 is electrically connected to the overhead wire 4 disposed on the third rail 3, and travels through the negative terminal (the negative terminal of the unit 10) 6b. It is electrically connected to the rail 7. The units 1 to 10 are connected in series, and the units 5 and 6 are connected by an insulated cable or the like that passes under the third rail 3.
For example, if an interval for enforcement of about 1 m is provided between the blocks, 200 blocks are connected in parallel and one domain is used, the length of one domain is about 7.2 km, and power of 600 VDC and 800 KW is supplied. Is possible.

  Thus, in the present embodiment, the overhead wire 4 is arranged on the back surface of the upper flange portion 31a, and at least the outer surface of the third rail 3 excluding the back surface of the upper flange portion 31a is insulated and protected by the insulating portion 32. Even if a person or an animal may come into contact with the third rail 3, electric shock can be prevented.

  Moreover, in this Embodiment, the current collector 1 is arrange | positioned in the lower part of the trolley | bogie 2 so that the current collector boat 12 may contact and slide on the overhead wire 4 arrange | positioned on the back surface of the upper side flange part 31a of the 3rd rail 3. Since it was made to do, while being able to reduce the current collector 1 compared with normal, the air resistance of the pantograph 11 can be reduced. Therefore, the current collector 1 is excellent in high-speed followability to the overhead line 4 and enables high-speed operation of the railway vehicle.

  Furthermore, in this embodiment, the current collecting boat 12 is arranged at a low position so as to contact and slide on the overhead wire 4 arranged on the back surface of the upper flange portion 31a of the third rail 3, so that the railway Even if the vehicle carriage 2 is tilted to the left and right while traveling, sufficient followability can be realized with the small current collecting boat 12. The position of the current collecting boat 12 can be set to a height of, for example, about 10 cm from the track. Even if the maximum inclination angle is 8 degrees in the pendulum type railway vehicle, the lateral displacement of the current collecting boat 12 is 1. It is about 4 cm. The lateral displacement of the current collecting boat 12 due to the inclination of the railway vehicle is considerably smaller than that of a normal current collecting boat located higher than the track.

Furthermore, in the present embodiment, the pair of current collecting boats 12 are in contact with and slide on the two overhead wires 4 such that the two overhead wires 4 are symmetrically arranged on the third rail 3. Therefore, when the cart 2 is inclined and the right current collecting boat 12 is likely to be detached from the right overhead line 4, for example, the left current collecting boat 12 is brought into close contact with the left overhead line 4. The same applies to the opposite case. Therefore, also with this configuration, high-speed followability to the overhead wire 4 can be improved.
In addition, since the two overhead wires 4 are arranged symmetrically, the balance of the weight of the overhead wire 4 in the third rail 3 can be maintained, and when the carriage 2 is introduced to the track, the front and rear of the carriage 2 can be No need to consider.

  Moreover, in this Embodiment, since it was made to supply electric power to a railway vehicle by the solar cell module 6 arrange | positioned in the immediate vicinity of the 3rd rail 3, compared with the electric power supply by the power transmission line from a power station, electric power Loss is greatly reduced. Further, the solar cell module 6 can be easily installed on the ground, and it is not necessary to perform power transmission line construction. Therefore, the construction period and construction cost are greatly reduced.

While the present invention has been described with reference to the embodiment, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the present embodiment, the example of the third rail 3 constituted by the main body 31 formed of a conductive material such as iron or copper and the insulating portion 32 has been described, but the entire third rail 3 is made of an insulating material. For example, it can be formed by FRP. Thereby, the effect of preventing electric shock is improved. In this case, in order to make the two overhead wires 4 have the same potential, the two overhead wires 4 are connected every several meters with, for example, a copper wire. A hole for penetrating a copper wire or the like is formed in the third rail 3.

Further, in order to prevent a person or an animal from tripping and coming into contact with the overhead wire 4 from the side and receiving an electric shock, the insulating portion 32a is connected to the flange portion 31a above the third rail 3, as shown in FIG. Both side surfaces may be respectively covered and may be extended below the position of the overhead wire 4.
In this case, the pair of current collecting boats 12 is provided with a current collecting receiver 12b for contacting and sliding with the overhead wire 4. The current collector receiver 12 b is erected on the main body 12 c of the current collector boat 12.
The current collector receiver 12b includes a current collector 121b that contacts and slides with the overhead wire 4, and a support 122b that is erected on the main body 12c and supports the current collector 121b. The current collector 121b is formed of a material such as carbon or a copper-based sintered alloy similar to the sliding plate 12a, and the support portion 122b is formed of a conductive material such as copper.
The current collector 121b has a crescent-shaped cross section in accordance with the shape of the overhead wire 4, but may be, for example, a similar reduction of a commonly used current collector boat. Further, although the current collector 121b is erected at the tip of the main body 12c, it is not always necessary to be erected at the tip.
It is also possible to form the entire third rail 3 with an insulating material and extend both side surfaces of the upper flange portion 31a below the position of the overhead wire 4 respectively.

  In order to prevent the current collector boat 12 from coming off the overhead wire 4, as shown in FIG. 6, a plate-shaped overhead wire guide formed of a conductive material such as copper on the surface where the two current collector boats 12a face each other. 20 may be erected. As a result, even when the carriage 2 is greatly shaken or when there is a large right and left slope on the track, the contact and sliding between the current collector boat 12 and the overhead wire 4 are maintained.

Moreover, although this Embodiment demonstrated the case where the solar cell module 6 was installed horizontally, a railroad track has a curve area. In this case, since the heights of the traveling rail 7 and the traveling rail 8 are different, it is necessary to install the solar cell module 6 on the inclined surface, and the length of the construction unit of the solar cell module 6 is set due to the curvature of the curved section. It may be necessary to shorten it. If the inclined surface approaches the optimum inclination angle of the solar cell at the latitude of the place, the solar cell module 6 is positively installed, and if it is away from the optimum inclination angle, it is installed in consideration of the power generation loss caused thereby. It will be.
By adjusting the length of the construction unit of the solar cell module 6 and adjusting the length of the column of the left and right gantry long plate 9, the solar cell module 6 can be installed on the curved section and the inclined surface. Further, the solar cell module 6 can be installed on the slopes of the track uphill / downhill sections in the same manner.
Moreover, since the voltage of a block is decided by the output voltage of the solar cell module 6 to be used and the number of the modules, a required voltage can be obtained by selecting them appropriately. In addition, the amount of electric power required for one train can be appropriately selected by adjusting the number of blocks in the domain. In the present invention, the solar cell module 6, the voltage and power of the unit, the voltage of the block, and the power of the domain are arbitrary.

  Further, in the present embodiment, the example in which the power is supplied to the third rail 3 using the solar cell module 6 has been described. It is possible to apply the invention.

  Further, in the present embodiment, the example in which the third rail 3 is installed in parallel with the center of the two traveling rails 7 and 8 has been described, but the third rail 3 is not necessarily in the center of the traveling rails 7 and 8. It is not necessary to install, and you may make it install in parallel with either the right or left side of the traveling rail 7 and the traveling rail 8. FIG.

  In the present embodiment, the example of the pantograph 11 provided with the rhombus-shaped frame 11a has been described. However, a single arm type or a lower frame crossing type frame 11a may be used.

  Further, in the present embodiment, the example in which the third rail 3 includes the insulating portion 32 made of an insulating material such as FRP has been described. However, as the insulating material of the insulating portion 32, polyvinyl chloride that is inexpensive and excellent in flame retardancy is used. It is also possible to use polyethylene that does not contain chlorine and has high electrical resistance, fluororesin that has excellent heat resistance and chemical resistance, polyester, and the like. Also, when the entire third rail 3 is formed of an insulating material, these insulating materials can be used.

  In the present embodiment, an example in which the lifting device 11b of the pantograph 11 includes a spring and a cylinder has been described. However, the expansion and contraction of the frame 11a of the pantograph 11 may be adjusted by adjusting the air pressure of the cylinder.

  Alternatively, a lithium secondary battery or the like may be mounted on a railway vehicle, and the electric power supplied by the power generation of the solar cell module 6 may be accumulated so that the railway vehicle can be operated in the rain or at night. Further, a storage battery warehouse may be provided at an appropriate location below the track to store the power supplied by the power generation of the solar cell module 6.

  Moreover, in this Embodiment, since the upper part of the web part 31b of the 3rd rail 3 overlaps with the insulation part 32 arrange | positioned at the both sides | surfaces of the upper flange part 31a in a height direction, it coat | covers with the insulation part 32. Although not done, the effect of preventing electric shock may be enhanced by coating. The outer surface of the third rail 3 except for the back surface of the upper flange portion 31a is preferably covered with the insulating portion 32 as widely as possible, but covers an appropriate range depending on the situation.

DESCRIPTION OF SYMBOLS 1 Current collecting device 11a Frame 11b Lifting device 12 Current collecting boat 12a Sliding plate 12b Current collecting receiver part 121b Current collecting receiver 122b Support part 12c Main body 20 Overhead guide 2 Carriage 3 Third rail 31 Main body 32 Insulating part 32a Insulating part 4 Overhead wire 5 Overhead support 6 Solar cell module 7, 8 Traveling rail 9 Base plate

Claims (7)

A pair of outer surfaces excluding at least the rear surface of the upper flange portion of the third rail are covered with an insulating portion, and are respectively in contact with and sliding on two overhead wires suspended symmetrically on the rear surface of the upper flange portion. Current boat,
A railcar current collector, comprising: a pantograph having a pair of extendable frames arranged at a lower end of the pair of current collector boats and disposed at a lower portion of the railcar. The insulating portions are respectively extended below the overhead wires on both side surfaces of the flange portion above the third rail,
2. The railway vehicle current collector according to claim 1, wherein each of the pair of current collecting boats has a current collecting receiver portion that is erected and contacts and slides on the overhead wire.   The railway vehicle current collector according to claim 1, wherein an overhead wire guide made of a conductive material is provided on the opposing surfaces of the pair of current collector boats.   The railcar current collector according to any one of claims 1 to 3, wherein the frame has a rhombus shape.   4. The railway vehicle current collector according to claim 1, wherein the third rail is entirely formed of an insulating material. 5.   The railway vehicle current collector according to claim 5, wherein the insulating material is a fiber-reinforced plastic.   A plurality of solar cell modules arranged in series are electrically connected to the overhead wire in the vicinity of the third rail, and are connected to the overhead wire. The current collector for a railway vehicle described in 1.

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