JPH06245311A - Current collector for vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the noise of the current collector during high-speed traveling, especially to reduce wind aerodynamic noise generated from the current collector, and to change lanes during low-speed traveling and travel on a large curvature orbit. An object of the present invention is to provide a vehicle current collector that can improve current collecting performance in some cases. [Structure] Two spaces with different width dimensions in the direction perpendicular to the traveling direction are provided in one space provided on the roof of a high-speed vehicle and surrounded by the suspension overhead wire 10, the upper pedestal 60, the lower pedestal 80 and the insulator 70. The current collectors 20 and 30 described above and two or more telescope mechanisms capable of adjusting the height positions of the current collectors 20 and 30 in the vertical direction are provided, and the traveling speed command or the output signal of the speed detector is provided. Thus, one of the mechanisms is moved up and down to push up the current collector 30 having a large width when the vehicle travels at a low speed to perform a current collection operation, and pushes up the current collector 20 having a small width when traveling at a high speed. It is provided with a switching means adapted to perform a current collecting operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle current collector,
In particular, the present invention relates to a vehicle current collector suitable for use in a high-speed vehicle that travels at high speed to reduce noise.

[0002]

2. Description of the Related Art Recently, as the traveling speed of high-speed railway vehicles such as the Shinkansen has been improved, a great reduction in environmental noise has been required. In particular, the wind noise generated by the current collector is loud, and the target value tends not to be satisfied with measures such as soundproof walls. Therefore, a sound insulation wall is installed around the current collector to reduce the flow velocity of the air flow hitting the current collector and to install a sound insulation cover that does not cause flow separation, and a sound insulation device that moves the current collector inside the sound insulation cover. Has been made. Such an apparatus is described in, for example, Japanese Utility Model Publication No. 52-159507. Further, it has been proposed that a low aerodynamic and low noise current collecting device is considered because the sound insulating cover has a limit. As an apparatus using such a telescope mechanism, Nikkei Mechatronics 1992.5.4, pages 22 to 40
Page and training materials for the Japan Society of Mechanical Engineers (No.920-77) (1992)
See pages 27-34. Further, a control mechanism for moving the current collector in the left-right direction with respect to the suspension wire depending on the traveling speed of the vehicle is described in JP-A-60-223401 and JP-B-4-46046.

[0003]

In the above-mentioned prior art, a current collector such as a single post is used by making the shape of members such as a current collector smooth and streamlined. It is not possible to significantly reduce aerodynamic noise due to vortices or separation generated from such members. Moreover, there is no description that the noise was significantly reduced. Generally, when traveling at high speed, the aerodynamic noise tends to increase in proportion to the cross-sectional area directly hit by the traveling wind and in proportion to the ninth power of the traveling speed. Therefore, it is said that a good effect can be obtained by reducing the cross-sectional area of the current collector that receives the running wind, that is, by reducing the thickness and width of the current collector. However, as the thickness of the current collector is reduced, the frequency of the aerodynamic sound rises and approaches the A characteristic sensitivity of the sound level meter. For this reason,
Noise level may increase. Therefore, in order to reduce the aerodynamic noise generated from the current collector, it is conceivable to shorten the width in the direction perpendicular to the traveling direction. However, if the width is made too short, the current collector will separate in the left-right direction and return to the original current collection position when changing lanes or traveling at low speed on a large curvature orbit as shown in FIG. There is a problem that it becomes impossible to collect electricity and it becomes impossible to collect electricity.

FIG. 5 shows a state in which the high-speed vehicle 170 is traveling from the suspension line 200 for a straight track to the suspension line 190 for a large curve track, and the wide current collector 180 satisfactorily follows and collects the current. It shows that it is receiving electricity.

An object of the present invention is to reduce the noise of a current collector during high-speed traveling, especially to reduce wind-breaking aerodynamic noise generated from a current collector, and to change lanes or travel at low speed on a large curvature orbit. An object of the present invention is to provide a vehicle current collector that can improve current collecting performance.

[0006]

[Means for Solving the Problems] In order to achieve the above object, a space provided on a roof of a high-speed vehicle and surrounded by a suspension wire, an upper pedestal, a lower pedestal, and an insulator is arranged in a traveling direction. It has two or more current collectors having different widths in the right-angle direction and two or more telescope mechanisms capable of adjusting the height position of the current collector in the vertical direction. One of the above mechanisms is moved up and down according to the output signal of to output a current collector with a large width when the vehicle is traveling at low speed, and a current collector with a small width when the vehicle is traveling at high speed. It is provided with a switching means for performing a current collecting operation.

[0007]

The means for switching the two or more current collectors in response to the traveling speed command causes one of the two or more telescope mechanisms to operate to perform the current collecting operation. In other words, when traveling at high speed on a straight track, the swing width of the suspension overhead wire in the left-right direction is not large, so it is possible to push up a current collector with a small width dimension to collect current, and Since the area is smaller, the aerodynamic sound is smaller. On the other hand, when changing lanes or traveling on a large curvature orbit at a low speed, the projected area is increased, but since the aerodynamic noise depending on the traveling speed is small, a current collector with a large width is used.
By collecting the current by pushing it up so that it contacts the suspension line, it is possible to follow the suspension line and collect current even if the current collector sways in the left-right direction and is greatly displaced. In this way, two or more current collectors with different width dimensions are switched to collect current due to changes in running speed, so noise can be reduced at high speeds, and running conditions at low speeds can be reduced. The associated current collection performance can be improved, and the overall current collection efficiency is improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a side view thereof, FIG. 2 is a front view thereof, and FIG.
Is a plan view thereof. 1 to 3, 10 is 25
A high-voltage current collector 20 and a low-speed current collector 30 show a suspension line through which a high-voltage current of kv flows, and collect the current by contacting it.
Is. The high-speed current collector 20 includes two sliding plates 21 and 22 that are in direct contact with the suspension wire 10 and support them.
Although not shown, the air conditioning member 23 is composed of a spring, a damping material, a boat support, and the like. Similarly, the low-speed current collector 30 also includes the two sliding plates 31, 32 and the air conditioning member 33.
It consists of The high-speed support pillar 40 and the low-speed support pillar 50 respectively include the high-speed current collector 20 and the low-speed current collector 30.
Is a support member provided to vertically move the. The upper pedestal 60 and the lower pedestal 80 are placed one above the other with a pleat-shaped insulator 70 provided for high voltage insulation interposed between them. The lower pedestal 80 is mounted on the roof 90. The high speed support column operating mechanism 100 and the low speed support column operating mechanism 110 are composed of a link mechanism that expands and contracts in the vertical direction, and operates the high speed supporting column 40 and the low speed supporting column 50 in the vertical direction. The high speed drive device 120 and the low speed drive device 130 are the high speed support column operating mechanism 100,
It is a hydraulic drive device that applies a driving force to the low speed support column operation mechanism 110. The high-voltage current collector 140 is a power supply circuit that is surrounded by the lower pedestal 80 and collects a high-voltage current through the high-speed support pillar 40 or the low-speed support pillar 50.

As shown in FIG. 2, the high-speed support column 40 and the low-speed support column 50 are composed of a spring 41, a cylinder 42, a spring 51, and a cylinder 52, respectively, and slide bearings 43, 53.
It is configured to operate via and to reduce vertical vibration. Further, the high-speed current collector 20 has a short dimension similar to the width dimension of the upper pedestal 60, and is placed in a position in contact with the upper pedestal 60 when current is not collected. Low speed collector 30
Is configured to have a long width dimension while being in contact with the suspension overhead wire 10. As shown in FIG. 3, a high-speed current collector 20
Slide plates 21 and 22, slide plates 31 of the current collector 30 for low speed,
32 is configured to be attached to the roof 90 via the lower pedestal 80 and the like so as to be orthogonal to the suspension overhead wire 10. Further, the switching between the high speed current collector 20 and the low speed current collector 30 includes a changeover switch 161, a changeover circuit 162, a high speed drive circuit 163, and a low speed drive circuit 164 as shown as a changeover means 160 in FIG. is doing.

In the configuration as described above, its operation is represented by a block diagram as shown in FIG. Here, although not shown, the changeover switch 16 is operated by a speed command 150 from the main controller of the high-speed vehicle 170.
1 outputs a control signal indicating whether the vehicle is traveling at high speed or traveling at low speed, and the switching circuit 162 operates. Thereby, either the high speed drive circuit 163 or the low speed drive circuit 164 operates to drive either the high speed drive device 120 or the low speed drive device 130 based on the control signal. When the high-speed vehicle 170 travels on a straight track at a high speed, the horizontal swing of the suspension line 200 for a straight track is not large, so that the follow-up of the left-right movement is good, so that the high-speed vehicle having a small width dimension is used. Since the electric body 20 can be pushed up to collect current, and the projected area for the running wind becomes small,
Aerodynamic noise can be reduced. Further, when the lane is changed or the vehicle travels at a low speed on a large curvature track, the swing width of the large curving track suspension line 190 in the left-right direction becomes large. Therefore, it is necessary to lengthen the width dimension of the low speed current collector 30. Therefore, the projected area becomes large. However, since the aerodynamic noise depending on the traveling speed is small, the low-speed current collector 30 having a large width dimension is used.
Can be used, and by pushing it up so as to come into contact with the above-mentioned suspension line 190 to perform a current collecting operation, even if the low-speed current collector 30 shakes in the left-right direction and is largely displaced, the suspension line 19 can be used.
It is possible to follow 0 to collect current.

According to this embodiment, a current collector having a short width is used to collect current from a suspended wire during high-speed traveling, and a collector having a long width is used to collect current from a suspended wire during low-speed traveling. By switching between the two current collectors according to the change in traveling speed to collect electric current, it is possible to reduce aerodynamic noise during high-speed traveling as much as the projected area becomes smaller. At low speeds, there is no effect of aerodynamic noise, so the width is made longer even if there is a change in the lane or the movement of the current collector with a large horizontal suspension line that occurs when traveling on a large curvature track. Therefore, the follow-up current can be collected along the suspended overhead line without being separated, and the current collection efficiency is improved as a whole. Regarding the method of calculating the speed command according to the present embodiment, the same effect can be obtained even if an anemometer for detecting the vehicle speed is attached to some of the two current collectors and the output signal thereof is used.

Another embodiment of the present invention is shown in FIGS.
The same parts as those in FIGS. 2 and 3 are designated by the same reference numerals. In FIG. 6 and FIG. 7, one high-speed current collector 20 having a short width is used, and expandable horns 200 are provided on the left and right. This telescopic horn 200 is attached to the catenary wire guide plate 211, a telescopic rod 215 that supports it horizontally, a telescopic cylinder 212 that telescopically operates the telescopic rod 215, and a telescopic cylinder 212 that is attached to the telescopic rod 212. Rod 2
It comprises a bearing 213 that supports 15 in the vertical direction, and a spring mechanism 214 that is used when the expansion rod 215 is contracted. Although not shown, the air driving source 300 is a lower pedestal 80.
It is fixed on the upper side and supplies air for expanding and contracting the expanding and contracting cylinder 212. In such a configuration, the telescopic horn 200 is connected to the high-speed current collector 2 during high-speed traveling.
The telescopic horn 200 shrinks to 0 and runs at low speed.
Is used by extending it to the outside of the high speed current collector 20. Here, FIGS. 6 and 7 show operating states during low speed traveling.

As described above, also in this embodiment, the telescopic horn can be adjusted by changing the traveling speed, and even when the suspension overhead wire is largely displaced left and right, the telescopic horn sticks out to the left and right for a long time. When traveling on a large-curvature orbit, the current can be collected again at the original position, wind aerodynamic noise can be reduced during high-speed traveling, and current-collecting operation can be performed during low-speed traveling.

[0014]

As described above, according to the present invention, the noise of the current collector is reduced during high-speed traveling, in particular, wind aerodynamic noise generated from the current collector is reduced, and the lane is changed during low-speed traveling. This has the effect of improving the current collection performance when traveling on a large curvature orbit.

[Brief description of drawings]

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

FIG. 2 is a front view of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a block diagram showing switching means.

FIG. 5 is a plan view showing a state in which a high-speed vehicle is traveling along a suspension line for a large curved track.

FIG. 6 is a plan view of a vehicle current collector showing another embodiment of the present invention.

FIG. 7 is a front view of FIG.

[Explanation of symbols]

20 ... High speed current collector, 30 ... Low speed current collector, 40 ... High speed support column, 50 ... Low speed support column, 100 ... High speed support column operating mechanism, 110 ... Low speed support column operating mechanism, 150 ... Speed command, 160 ... Switching means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Morinari Hamamatsu Prefecture Shimomatsu City HigashiToyoi 794 Address Higashi Toyoi Co., Ltd.Hitachi Ltd. Kasado Factory (72) Inventor Hideo Takai Daimo Higashitoyoi 794 Address Higashitoyoi Stock Association Company Hitachi Ltd. Kasado factory

Claims (1)

[Claims] 1. A current collector for collecting electric power from a suspension overhead wire to a vehicle, a telescope mechanism capable of adjusting a height position of the current collector in a vertical direction, and an insulator surrounding the mechanism. A current collector for a high-speed vehicle, comprising: control means for changing a width dimension of the current collector in a direction perpendicular to a traveling direction according to a change in a traveling speed of the vehicle.