JP3622999B2 - Railway current collector - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a current collector provided on a roof of a railway vehicle.
[0002]
[Prior art]
In recent years, the problem of noise generated from the periphery of a vehicle has become larger in the problem of noise outside the vehicle of a railway vehicle that is increasing in speed than the noise generated from between a wheel and a rail. In particular, in a route where a noise barrier is installed as a noise countermeasure, noise generated by equipment on the upper part of the vehicle that is exposed without being covered by the noise barrier is a problem.
[0003]
Among these, current collection system noise generated from current collectors, so-called pantographs, is important from the viewpoint of function and performance priority and requires countermeasures. In this current collection system noise, there is also a spark sound that occurs when the pantograph momentarily leaves the overhead line and a sliding noise that occurs between the overhead line and the pantograph, but as the traveling speed of the vehicle increases, Aerodynamic noise generated when an air flow passes around each part of the current collector becomes a major problem.
[0004]
In order to reduce this aerodynamic noise, some trains have a pantograph cover on the roof. The pantograph cover is provided with a slope having a predetermined elevation angle toward the pantograph, and guides an air flow above the pantograph along the slope. FIG. 5A is a plan view showing a state in which the pantograph 51 and the pantograph cover 53 are attached to the roof of the train 55, and FIG. 5B is a view of FIG. 5A viewed from the side of the train. In FIG. 5B, in order to make the pantograph 51 easier to see, the front half of the pantograph cover 53 in the figure is excluded.
[0005]
As shown in FIG. 5B, when the train 55 travels in the direction of the arrow C, the slope 53a of the pantograph cover 53 bounces up the air flow 57 generated by the travel obliquely upward and suppresses the flow velocity hitting the pantograph 51. . The slope 53a is provided away from the pantograph 51 by a predetermined distance d. This distance d is a distance necessary for the splashed air flow 57 to rise above the pantograph 51. Further, in order to prevent the airflow flowing on the left and right sides of the train from entering the pantograph cover 53 and hitting the pantograph 51, plate-like members 53b and 53c that form a continuous surface with the inclined surface 53a are also provided on the side of the pantograph 51. It has been.
[0006]
[Problems to be solved by the invention]
However, according to such a method, the slope 53d is also required behind the pantograph 51 in order to run the train 55 in the direction opposite to the arrow C. That is, the length of the pantograph cover 53 is required to be at least twice as long as the distance d, and the weight of the pantograph cover 53 (the weight of the entire train) increases, which hinders high-speed travel.
[0007]
As a countermeasure, it is conceivable to raise the pantograph cover 53. However, railroad vehicles have a size (vehicle limit) that the cross-sectional shape must not exceed for safe driving, and increase the air resistance and cause new aerodynamic noise. The pantograph cover 53 cannot be raised unnecessarily from the point.
[0008]
The present invention has been made to solve these problems, and an object of the present invention is to provide a current collector that can prevent generation of aerodynamic noise while traveling while suppressing an increase in the weight of a train.
[0009]
[Means for Solving the Problems]
In order to achieve this object, a railway current collector according to claim 1 of the present invention is provided.
A current collector boat that is a pair of long members that contact the overhead wire, a current collector boat support that supports the current collector boat, and supports the current collector boat support and moves the current collector boat support up and down as needed. A current collector boat lifting mechanism that contacts and separates the current collector boat from the overhead line, and a support base that is electrically insulated from the current collector boat lifting mechanism and the train and fixed to the roof of the train. Pantograph and
A pantograph cover that includes a plate-shaped member that forms a slope with a predetermined elevation angle toward the pantograph, and guides an air flow from the traveling direction due to traveling of the train by the plate-shaped member above the pantograph;
In a railway current collector comprising:
The above pantograph is
The current collector boat lifting mechanism
A frame that supports the current collector boat support so as to be vertically movable at a position that is decentered by a predetermined distance in the longitudinal direction of the current collector boat from its center;
By driving the frame body, the current collector boat is composed of a drive device that moves up and down between a position where it abuts against the overhead wire and a position where it does not hit the airflow,
The support table is configured to oppose each of the current collecting boat elevating mechanisms so that the current collecting boat elevating mechanisms provided with the current collecting boat and the current collecting boat support are opposed to each other in the longitudinal direction of the train. Configured,
The pantograph cover is provided so as to surround the pantograph provided with the two current collector boat lifting mechanisms,
Of the current collector boats of the pantograph equipped with the two current collector boat lifting mechanisms, the current collector boat located behind the traveling direction of the train is in contact with the overhead wire and is located in front of the traveling direction of the train Is placed away from the overhead line and does not hit the air flow
It is characterized by that.
[0010]
The invention according to claim 2 is the railway current collector according to claim 1,
The frame is
An arm portion that is a single substantially rod-like member pivotally attached to the collector boat support so as to be swingable along a plane perpendicular to the longitudinal direction of the collector boat;
The link mechanism is configured substantially in the plane, and supports the arm portion so as to be movable in the plane.
[0011]
[Operation and effect of the invention]
Or railway current collector device according to claim 1 of the present invention constructed as described (hereinafter, simply referred to as current collector) when the train with the traveling, the rearward with respect to the traveling direction of the train collector boat positioned is brought into contact with the rack line, the other current collecting boat, is separated from the rack line, it is so hard to hit the air flow from the front generated by the running of the train.
[0012]
When the current collector boat is positioned in this way and the train is running at high speed, the air flow generated by the run hits the slope of the pantograph cover and jumps up above the pantograph, and the flow velocity of the air hitting the current collector boat and the current collector boat lifting mechanism is increased. It is possible to suppress the generation of aerodynamic noise.
[0013]
Also, since the height of the pantograph cover does not increase, the pantograph cover protrudes above the vehicle limit, the air resistance of the pantograph cover increases significantly, impeding high speed running, and the pantograph cover is a new aerodynamic sound. It does not become a source.
[0014]
Furthermore, since the frame of the pantograph is eccentric in the longitudinal direction of the current collecting boat with respect to the current collecting boat support, when the two current collecting boat lifting mechanisms are opposed to each other, the current collecting boat and the current collecting boat support are supported. While each part including it is kept operable without interfering with each other, both can be brought close to a distance such that a part of the current collecting boat lifting mechanism overlaps when viewed from the side. Therefore, if the two collector boat lifting mechanisms are installed on the support base as described above, the pantograph cover can be shortened, the increase in the size of the support base supporting the two collector boat lifting mechanisms can be suppressed, and the train weight can be reduced. The increase can be suppressed.
[0015]
The current collector according to claim 2 can prevent the generation of aerodynamic sound by the same action as the current collector according to claim 1, and the pantograph frame includes a single bar-like member and Since it has a simple and planar configuration of a link mechanism that is movably supported, the two current collector boat lifting mechanisms facing each other can be arranged closer to each other. Accordingly, the pantograph cover can be further shortened, the increase in the size of the support base that supports the two current collecting boat lifting mechanisms can be further suppressed, and the increase in the train weight can be suppressed.
[0016]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
First, FIG. 1 is a plan view showing a current collector 1 according to an embodiment of the present embodiment.
The pantograph cover 11 is provided on the roof of the train so as to surround the pantograph 2, and the longitudinal direction of the train is inclined surfaces 11 a and 11 b having a predetermined inclination toward the pantograph 2.
[0017]
FIG. 2 is a side view of the current collector 1 and shows a state in which only the current collector boat 15a located at the rear is raised and brought into contact with an overhead line (not shown) in order for the train to travel in the direction of arrow A. FIG. 2 is a diagram in which the front half of the pantograph cover 11 is removed to show the configuration of the pantograph 2.
[0018]
As shown in FIG. 2, the pantograph 2 includes two pairs of current collector boats, two current collector boat lifting mechanisms that lift and lower each of the two pairs of current collector boats, and a support base 17 that supports them. The support table 17 is fixed to the train roof 13 via the meteorite 18 so that the entire pantograph 2 is supported on the train roof. The two current collecting boat elevating mechanisms include first links 19a and 19b, second links 21a and 21b, which are directly attached to the support base 17, and arm portions 23a and 23b supported by the two links. Each driving device is not shown. That is, the pantograph 2 has a structure that can be called a composite Z-type pantograph.
[0019]
Focusing on one current collecting boat lifting mechanism, the first link 19a, the second link 21a, and the arm portion 23a are positioned in substantially one plane, and are therefore plan views. 1, most of the first link 19a and the second link 21a are hidden behind the arm portion 23a and cannot be seen. Further, as described above, both the first link 19a and the second link 21a are pivotally attached to the support base 17 and the arm portion 23a at both ends, and these axes are perpendicular to the one plane. Yes. That is, the first link 19a, the second link 21a, and the arm portion 23a are movable while being kept parallel to the one plane.
[0020]
The two types of links 19a and 21a and the arm portion 23a are rocked and interlocked by the driving device. When the second link 21a is rotated clockwise by the elastic force of the spring provided in the driving device, the first link 19a is interlocked with this, the arm portion 23a is lifted, and the arm portion 23a is provided at the extended end. The collected current collecting boat 15a rises and comes into contact with an overhead line (not shown). Similarly, when the second link 21a is rotated counterclockwise by the air cylinder provided in the driving device, the current collecting boat 15a is lowered and can be folded like the current collecting boat 15b. .
[0021]
When the vicinity of the current collecting boat 15a in FIG. 2 is viewed from the direction of the arrow B, the configuration is as shown in FIG. That is, the shaft portion 27a is attached to the arm portion 23a at a position eccentric to the right in the drawing from the center, and the current collecting boat 15a is fixed to the shaft portion 27a via the support body 29a. Yes.
[0022]
The other current collecting boat elevating mechanism has the same shape as the current collecting boat elevating mechanism described above, and these two current collecting boat elevating mechanisms are current collecting boats supported by the arm portions 23a and 23b. 15a and 15b are opposed to each other in such a direction that they can be withdrawn, and are placed within a range where they can operate without interfering with each other.
[0023]
Here, among the components of the present embodiment, those that are not clearly associated with the components of the present invention will be described. The shaft portion 27a and the support 29a correspond to the current collector boat support of the present invention. The first link 19a and the second link 21a correspond to the link mechanism of the present invention. In addition, description is abbreviate | omitted about the site | part which draws the electric current taken in from the overhead wire by the said current collector to the motive power part etc. of a train.
[0024]
When a train equipped with the current collector 1 of the present embodiment configured as described above travels in the direction of arrow A, the drive devices of the two current collector boat lifting mechanisms are respectively operated so that the train travels in the traveling direction. On the other hand, the current collecting boat 15a located at the rear is raised and brought into contact with the overhead wire, and the other current collecting boat 15b is lowered so that the air flow from the front generated by the traveling of the train is difficult to hit. When the train travels in the direction opposite to the arrow A, the current collecting boat 15b is raised and brought into contact with the overhead line, and the other current collecting boat 15a is lowered.
[0025]
When the current collecting boats 15a and 15b are thus positioned and the train is traveling at a high speed, the air flow generated by the traveling is bounced up above the pantograph 2 along the slope 11a of the pantograph cover 11, and two pairs of current collectors are collected. Since it jumps over the boats 15a and 15b, it is difficult for the air to hit the current collecting boats 15a and 15b and the current collecting boat lifting mechanism, and generation of aerodynamic sound can be prevented.
[0026]
Further, since the height of the pantograph cover is not increased, the pantograph cover 11 exceeds the vehicle limit, the air resistance of the pantograph cover 11 hinders high-speed traveling, or the pantograph cover 11 is a new source of aerodynamic sound. It does not become.
[0027]
Further, the frame body of the pantograph 2 has a simple and planar configuration of the arm portion 23a and the link mechanism that movably supports the arm portion 23a as described above, and is eccentric in the longitudinal direction of the current collecting boat to support the current collecting boat. Therefore, when two current collector boat lifting mechanisms are opposed to each other, they are brought close to each other so that they can be seen as seen from the side while keeping them both operational. be able to. Therefore, if the two collector boat elevating mechanisms are placed close to the support base as described above, the pantograph cover can be shortened, and the increase in the size of the support base supporting the two collector boat elevating mechanisms can be suppressed. An increase in train weight can be suppressed.
[0028]
Although the current collector 1 has been described above, the present invention is not limited to the above-described embodiment, and can be implemented in various modes. For example, the pantograph can be configured as shown in FIG.
The pantograph 3 in FIG. 4 is obtained by making the first links 31a and 31b and the second links 33a and 33b longer and the arms 35a and 35b shorter than the pantograph 2 in FIG. The two current collector boat lifting mechanisms configured as described above are provided on the support base 37 so that the side supporting the current collector boat support of the arms 35a and 35b is opposed to the pantograph 2. Is. If a pantograph cover is provided around this area in the same manner as the pantograph 2 in FIG. 2 and each current collector boat lifting mechanism is operated like the pantograph 2, the same effect as the current collector 1 can be obtained.
[Brief description of the drawings]
FIG. 1 is a plan view showing a current collector of an embodiment.
FIG. 2 is a side view showing the current collector of the embodiment.
FIG. 3 is an explanatory view showing a state in which an arm portion supports a current collecting boat support.
FIG. 4 is an explanatory diagram showing another example of a pantograph.
FIG. 5 is an explanatory diagram showing a conventional current collector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Current collector 2 ... Pantograph 11 ... Pantograph cover 15a, 15b ... Current collector boat 17 ... Support stand 19a, 19b ... 1st link 21a, 21b ... 2nd link 23a, 23b ... Arm part

Claims (2)

A current collector boat that is a pair of long members that contact the overhead wire, a current collector boat support that supports the current collector boat, and supports the current collector boat support and moves the current collector boat support up and down as needed. A current collector boat lifting mechanism that contacts and separates the current collector boat from the overhead line, and a support base that is electrically insulated from the current collector boat lifting mechanism and the train and fixed to the roof of the train. Pantograph and
A pantograph cover that includes a plate-shaped member that forms a slope with a predetermined elevation angle toward the pantograph, and guides an air flow from the traveling direction due to traveling of the train by the plate-shaped member above the pantograph;
In a railway current collector comprising:
The above pantograph is
The current collector boat lifting mechanism
A frame that supports the current collector boat support so as to be vertically movable at a position that is decentered by a predetermined distance in the longitudinal direction of the current collector boat from its center;
By driving the frame body, the current collector boat is composed of a drive device that moves up and down between a position where it abuts against the overhead wire and a position where it does not hit the airflow,
Said support base is a two units of the condensing Denfune lifting mechanism having the collector vessel and the condensing Denfune support, is opposed in the longitudinal direction of the train, supporting each said current Denfune elevating mechanism each operable to Configured,
The pantograph cover is provided so as to surround the pantograph provided with the two current collector boat lifting mechanisms,
Of the current collector boats of the pantograph equipped with the two current collector boat lifting mechanisms, the current collector boat located behind the traveling direction of the train is in contact with the overhead wire and is located in front of the traveling direction of the train Is placed away from the overhead line and does not hit the air flow
This is a railway current collector. The railway current collector according to claim 1,
The frame is
An arm portion that is a single substantially rod-like member pivotally attached to the collector boat support so as to be swingable along a plane perpendicular to the longitudinal direction of the collector boat;
A railway current collector comprising: a link mechanism configured substantially in the plane and supporting the arm portion so as to be movable in the plane.

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