JPH0965503A - pantograph - Google Patents

Abstract

(57) [Abstract] [Problem] The generation of aerodynamic noise increases as the speed of a vehicle increases. SOLUTION: A boat body 2 having a streamlined cross section by detachably holding a picking plate 1, a column 3 having a streamline cross section with the boat body 2 fixed to an upper end, and a column 3 supported so as to be vertically movable. Supports the boat lifting mechanism that pushes upward with a constant pressure when rising, the tilting mechanism that vertically tilts the boat lifting mechanism to hold the support column 3 vertically when standing, and supports the tilting mechanism. Then 180
A turning mechanism, a cover 28 which is installed on the vehicle roof 37 and has an arm-shaped cross section in the traveling direction, and a support 3 which is formed on the top of the cover 28 and allows the support 3 to stand up while the support 3 and the boat 3 fall. Opening 28 for passing the body 2
a and 28b, and auxiliary covers 29 and 30 that openably and closably cover the opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pantograph installed on an electric railway vehicle.

[0002]

2. Description of the Related Art Aerodynamic noise generated in a pantograph has become an environmental problem due to the recent increase in the speed of railway vehicles, and various countermeasures have been proposed. As an example of the noise countermeasures, Fig. 1
There are pantographs shown in FIGS. this is,
The boat 2 having the pick-up plate 1 attached thereto is supported on the top of a conventional diamond-shaped frame 35, and the frame 35 is supported on the roof 37 of the vehicle body by the insulator 24 via the underframe 9. Since the boat body 2 and the framework 35 are configured by prismatic or columnar members, Karman vortices are generated during traveling and aerodynamic noise is generated. Therefore, by installing the cover 28 around the pantograph, the velocity of the air flow hitting the pantograph is reduced. Further, the applicants of the present application have disclosed in Japanese Patent Application Laid-Open No. 6-78407 as a pantograph with less generation of aerodynamic noise.
Proposed a pantograph of. This is one in which a current collecting boat having an elliptical cross section is supported on the upper end of a single extendable column, and the current collecting boat is pressed and biased upward by a pneumatic cylinder. This is because the number of the support pillars is one and the cross-sectional shape of the current collecting boat is elliptical, so that generation of aerodynamic noise can be suppressed.

[0003]

However, in the former pantograph, since the cover 28 is provided, the cover 2 is not provided.
Turbulence occurs at the edge 8 and the roof 37 at the connecting portion of the vehicle body, and becomes a new noise source during high-speed traveling. Further, since the latter pantograph corresponds to both forward and backward directions of the vehicle, the cross sections of the support column and the boat are elliptical and not streamlined. Therefore, when traveling at high speed, the generation of Karman vortices at the trailing edge of the flow direction is unavoidable, and there is a limit to noise suppression. The present invention has been made to solve the above problems, and an object of the present invention is to provide a pantograph that can reduce noise generation during high-speed traveling and can cope with an era of high-speed vehicles.

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 has a boat body having a streamlined cross section and a boat body which detachably holds a pick-up plate on the upper surface and a boat body at the upper end.
Supporting in a letter shape and having a streamlined cross section, a support for supporting the support so that it can move in the vertical direction, and a boat elevating mechanism that pushes upward with a constant pressure when rising, and erects the boat elevating mechanism. And a tilting mechanism part that vertically holds the column when standing up, a turning mechanism part that supports the tilting mechanism part and turns 180 degrees, and a cover that is installed on the vehicle roof and has an arm-shaped cross section in the running direction. , An opening formed on the top of the cover for penetrating the supporting pillar when standing and passing through the supporting pillar and the boat at the time of falling, an auxiliary cover for opening and closing the supporting pillar penetrating side of the opening of the cover, And an auxiliary cover for opening and closing the pillar of the opening and the boat passage side.

As a result, the support for the boat holding the pick-up plate at the upper end is pushed upward by the boat lifting mechanism, so that the pick-up plate of the boat is pressed against the overhead wire with a constant pressure to collect current. At the same time, the level of the overhead line is changed while the vehicle is running. Further, although the support pillar and the boat are exposed above the cover, the support pillar and the boat have a streamline cross-section with respect to the traveling direction, so that the generation of Karman vortices can be suppressed even in the high speed range. When reversing the traveling direction of the vehicle,
The boat elevating mechanism is operated to lower the support column and the boat. Then, the turning mechanism is operated to turn the support column and the boat together with the boat lifting mechanism by 180 degrees. Here, again, the boat elevating mechanism is actuated to raise the support column and the boat, so that traveling in the opposite direction is possible. When the pantograph is not used, the boat elevating mechanism is operated to lower the column. At the same time, the columns and the auxiliary cover on the side of the boat passing through are opened. Then, the raising and lowering mechanism is operated to bring the support column and the boat into the opening of the cover. Further, both open auxiliary covers are closed. as a result,
The entire pantograph is housed inside the cover and there is nothing that protrudes to the outside, which further reduces noise generation when traveling when not in use.

According to a second aspect of the present invention, in the first aspect, the pick-up plate is attached to the boat body via an elastic supporting member. This facilitates replacement when the pickpocket is worn.

A third aspect of the present invention is characterized in that, in the first or second aspect of the present invention, separating plates, which are the rear edges of the picking plates and are parallel to the flow direction in the longitudinal direction, are provided at appropriate intervals. . As a result, the air flow in the rear part of the pick-up plate is divided in the lengthwise direction of the pick-up plate to generate a separation phase difference, and the generation and development of Karman vortices are prevented.

The invention of claim 4 is characterized in that, in the invention of claim 1 or 2, the cross-sectional shape of the upper surface of the pick-up plate is formed in a streamline shape continuous to the cross-sectional shape of the hull. As a result, the generation of turbulence in the pick-up plate portion is suppressed.

A fifth aspect of the present invention is characterized in that, in the invention according to any one of the first to fourth aspects, the front end of the column is shaped so as to retreat rearward in the traveling direction as it goes upward. As a result, the phase of the air flow is shifted, and the generation of Karman vortices is suppressed accordingly.

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, a link for expanding the stroke of the pneumatic cylinder and the pneumatic cylinder in the boat elevating mechanism and transmitting the stroke to the support column. It is characterized by having a mechanism. As a result, the amount of operation of the pneumatic cylinders linked to it is smaller than the amount of vertical movement of the hull when the vehicle is running, so that the followability,
Responsiveness is improved.

According to a seventh aspect of the invention, in the invention according to any one of the first to sixth aspects, a control device is provided for controlling the opening / closing operation of both auxiliary covers in conjunction with the operation of the raising / lowering mechanism section. It is characterized by As a result, the opening of the cover is closed when the pantograph stands up and when the pantograph falls and is housed in the cover, so that turbulent flow from the cover is minimized.

The invention according to claim 8 is characterized in that, in the invention according to any one of claims 1 to 7, the cover is formed of a porous plastic material. This enables weight reduction.

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, the distance from the lower surface of the boat to the upper surface of the cover when standing up is 1.0 times the chord length of the boat cross section. It is characterized by the above. Thereby, the ground effect between the cover and the hull can be suppressed.

According to a tenth aspect of the present invention, in the pantograph according to any one of the first to ninth aspects, a cover opening portion through which the support column penetrates is formed in a circular shape with a part cut off, and an outer periphery is formed in this opening portion. It is characterized in that the inner lid, which is slidably contacted with the through hole and through which the support column is vertically movable, is supported at the same level as the cover from below the support column side. As a result, the gap between the support and the cover is minimized when the vehicle is traveling, and noise generation from the cover gap can be minimized.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing a usage state of an embodiment of the present invention. In the figure, reference numeral 37 denotes a vehicle roof, and a cover 28 made of porous plastic, which is an insulating material, is installed at an end portion of the vehicle roof 37.
The column 3 projects upward from the top of the cover 28.
The boat body 2 is integrally fixed to the upper ends of the support columns 3 at right angles to the traveling direction and in the horizontal direction. The pick-up plate 1 is held on the upper surface of the boat body 2, and the pick-up plate 1 comes into contact with the overhead line 36 to collect current. By using the porous plastic for the cover 28, it is possible to integrally mold and reduce the weight.

The figure shows the case where the vehicle body travels in the lower left direction, and the cross sections of the support column 3 and the boat body 2 are both streamlined with respect to the traveling direction. As a specific shape, a wing-shaped low aerodynamic sound shape represented by NACA is used. At the portion of the cover 28 that is behind the pillar 3, the pillar 3 and the boat 2
An auxiliary cover 29 is attached which is opened when storing the. The shape of the cover 28 is an arm shape when viewed from the side in order to reduce air resistance and shorten the length in the traveling direction. Therefore, even if the cover 28 is installed at the end of the roof 37 of the vehicle, the cover 28 does not come off from the roof 37, and the generation of aerodynamic noise due to the edge of the cover can be eliminated.

FIG. 2 is an enlarged cross-sectional view of the boat body 2. On the upper surface side of the boat body 2, a groove for mounting the pick-up plate 1 is formed in the direction perpendicular to the drawing, and a guide 2a is formed in the center thereof. It is projected. The guide 2a includes a restoring spring 23 made of a rubber material.
Are fitted together, and a support frame 41 having a U-shaped cross section is integrally supported on the upper portion of the restoring spring 23. The pick-up plate 1 is placed on the upper surface of the support frame 41 via the floor plate 39, and the pick-up plate 1 is fixed by inserting the bolt 40 upward from the lower surface of the support frame 41. As described above, since the pick-up plate 1 is fixed by the bolts 40, when the pick-up plate 1 is worn, it can be easily replaced.

The restoring spring 23 may be a leaf spring or a coil spring other than rubber. In addition, floor plate 3
In the rear extended portion of 9, there is a triangular separating plate 39a,
It is fixed to the picking plate 1 and the floor plate 39 in parallel with the air flow direction and at appropriate intervals. Therefore, even if the pick-up plate 1 on the upper surface of the hull 2 moves up and down and the surface shape of the hull 2 becomes discontinuous due to the deviation from the upper surface of the hull 2, the air flow is picked up at the trailing edge of the pick-up plate 1. Generation and development of Karman vortices are prevented by dividing the plate 1 in the longitudinal direction and generating a separation phase difference.

FIG. 3 is an enlarged sectional view showing another embodiment of the boat body 2. The difference between this embodiment and the embodiment of FIG. 2 is that a carbon material is used to form the cross-sectional shape of the pick-up plate 1 into a streamlined shape that is continuous with the cross-sectional shape of the boat body 2 and is fixedly bonded to the support frame 41. It is a thing. As a result, the air flow in the portion of the pick-up plate 1 is stabilized and turbulent flow generation is suppressed. The structure of the other parts is common to the embodiment of FIG.

FIG. 4 is a view showing the internal structure of the embodiment of FIG. 1 with the cover 28 removed, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a view of FIG. 4 viewed from the left side thereof. is there. In these figures, the four insulators 2 arranged on the roof 37 of the vehicle
The underframe 9 is supported by 4 at their central positions. A bearing base 38 that allows rotation around a vertical axis is installed on the underframe 9, and a pair of brackets 43 are provided on the upper surface of the bearing base 38 so as to project therefrom. Is pivotally supported. One end of a lift mechanism support 8 is connected to the rotary shaft 7.

At the other end of the elevating / lowering mechanism support 8, a link 11 which is rotatable in a vertical plane is pivotally supported. The link 11 is composed of a short side and a long side, and the length of the short side is L1 and the length of the long side is L2. The short side of this link 11 is connected to the rod of the pneumatic cylinder 10 for lifting. The end of the cylinder 10 is pivotally supported by a bracket 44 that is integrally formed with the rotating shaft 7 and the elevating mechanism support 8. When the cylinder 10 operates and the rod moves forward and backward, the link 11 is rotated and the tip of the long side portion moves in the vertical direction. A long hole 11a is formed in the longitudinal direction at the tip of the long side portion and is engaged with a pin 47 at the lower end of the guide rod 5 formed of a spline shaft.

The guide rod 5 is supported above the support cylinder 6 via a spline bearing 4. The lower end of the support cylinder 6 is supported and fixed by a receiver 8. The upper end of the guide rod 5 is connected to the cavity ceiling of the column 3 having a cavity formed inside. The cylinder 10, the link 11, the pin 47, the guide rod 5, the bearing 4, the support cylinder 6, and the like constitute a boat lifting mechanism. Here, since the guide rod 5 is a spline shaft, the support cylinder 6 is restricted from rotating about its axis. In FIG. 4, 27 is a pipe for supplying compressed air to the underframe 9 side.

As shown in the operation diagram of FIG. 7, when the cylinder 10 is moved forward, the guide rod 5 connected to the link 11 descends so that the support column 3 and the boat body 2 move. To descend. When the cylinder 10 retreats, the guide rod 5 rises, the pillar 3 and the boat 2 rise, and the picking plate 1 is pressed against the overhead wire 36. Here, by adjusting the air pressure supplied when the cylinder 10 moves backward, the upward pressing force of the support column 3 and the boat 2 can be adjusted to an optimum state. In particular, in this embodiment, since the stroke of the cylinder 10 is expanded to L2 / L1 times by the link 11 and then transmitted to the support column 3, the operation of the cylinder 10 that follows the vertical movement of the support column 3 side that occurs during traveling can be performed. Get smaller.

As a result, the cylinder 10 that supports the support column 3
The influence of the friction of the piston and the inertia of the rod and the piston is reduced, and the responsiveness and followability of the boat 2 and the support column 3 are improved. In the embodiment, it was confirmed that sufficient followability can be obtained when the friction during the vertical movement of the column 3 is set to 1 kg or less. Further, the cross-sectional shape of the column 3 is bilaterally symmetric and streamlined, and the portion where the front end of the column 3 is exposed from the cover 28 is configured to be retracted backward as it goes upward. As a result, the phase of the airflow during traveling is shifted, and the generation of Karman vortices is suppressed accordingly.

In addition, in a position opposite to the cylinder 10 on the upper surface of the bearing base 38, in the horizontal direction orthogonal to the rotating shaft 7,
A rodless type pneumatic cylinder 12 is attached. The piston portion of the cylinder 12 is engaged with the elongated hole of the arm 13 fixed to the rotating shaft 7. By these, the tilting mechanism portion is formed. As for the operation of the raising / lowering mechanism portion, as shown in FIGS. 8 and 9, the elevating mechanism portion receiver 8 is held in a horizontal state while the piston portion is moving to the left. At this time, the column 3 stands upright. Here, when the piston portion is moved to the right, as the arm 13 rotates, the lifting mechanism portion receiver 8 fixed to the rotating shaft 7 falls in the clockwise direction. Therefore, the support column 3 and the boat body 2 supported on the lift mechanism support 8 both fall down and come into contact with the stopper 14 to stop. This fallen state is the state of being stored in the cover 28.

Next, the turning mechanism will be described. FIG.
0 is a sectional view taken along the line AA in FIG. 4, and FIG. 11 is a sectional view taken along the line BB in FIG.
It is a line sectional view. As shown in FIG. 11, the bearing stand 38
A rodless type pneumatic cylinder 15 is mounted on the underframe 9 in a position close to. On the other hand, the bearing stand 38
The ball bearing 18 is rotatably supported by the underframe 9, and the pinion 17 is coaxially fixed to the outer peripheral portion of the rotatable bearing stand 38. A rack 16 is engaged with the pinion 17, and the rack 16 is supported by a piston portion 19 and a receiver 20 of the pneumatic cylinder 15. The rear surface of the end of the rack 16 is in contact with the guide 22 via the roller 21. The swivel mechanism section is configured by these.

FIG. 12 is a diagram for explaining the operation of the turning mechanism section.
FIG. 7A shows a state before turning and traveling to the left. In this state, when the cylinder 15 is operated to move the piston portion 19 downward, the rack 16 moves the pinion 1
Rotate 7 counterclockwise. When the pinion 17 turns 180 degrees, the pillar 3 also turns 180 degrees and travels to the right, as shown in FIG.

Next, the case where the support column 3 is turned over and stored in the cover 28 will be described. 13 is an explanatory view showing the operation of the auxiliary cover in a state where the support column 3 is upright, FIG. 14 is a plan view of FIG. 13, FIG. 15 is a left side view of FIG. 13, and FIG. 16 is DD of FIG. It is a line sectional view. As shown in the drawing, a circular opening 28a is formed at the top of the cover 28 at a position where the column 3 is penetrated while standing upright. The diameter of the opening 28a is set to be larger than the width of the column 3, and the inner lid 25 supported by the stud 26 projecting from the lower elevating mechanism support 8 is rotatably attached to the inside of the opening 28a. It is supported through contact or a slight gap.

The inner lid 25 is formed with a hole having the same cross-sectional outer shape as the pillar 3 and slightly larger than the pillar 3, and the pillar 3 is vertically movably inserted therein. When the column 3 pivots to change direction, the stud 26 also pivots with it, so the inner lid 25 pivots simultaneously. In addition, prop 3
If you fall backwards, the studs 26 will also fall, so they will fall together. That is, by closing the space between the opening 28a formed in the cover 28 and the support column 3 with the inner lid 25, the airflow on the cover 28 during traveling can be made smooth and turbulence can be reduced.

Further, the cover 28 at the rear of the opening 28a is provided with the support 3 and the boat body 2 by retracting them backward and storing them.
An opening 28b for passing through the cover 28 is formed. An auxiliary cover 29 is attached to the hinge 4 at the opening 28b.
It is rotatably supported by 5. The auxiliary cover 29 is driven to open and close by a pneumatic cylinder 31 installed in the cover 28. Normally, the opening 28b is the auxiliary cover 29.
It is closed by and is opened when the pillar 3 and the boat body 2 are stored or taken out.

On the other hand, an auxiliary cover 30 for covering the opening 28a is movably supported by a pair of rails 34 on the lower surface of the cover 28 on the side of the opening 28a.
The auxiliary cover 30 is connected to the pneumatic cylinder 32 via a rod 46 and a link 33. The auxiliary cover 30 moves toward the opening 28a side by retracting the pneumatic cylinder 32 in a state where the inner lid 25 is tilted backward together with the support column 3 and the opening 28a is opened.

As a result, the support 3 and the boat 2 are covered 28
The opening 28a at the top of the cover 28 is closed while being housed inside. In this way, the auxiliary covers 29, 30 are opened / closed in association with the upright / falling of the column 3 and the boat 2. Note that, in FIG. 13, the distance H from the lower surface of the hull 2 to the upper surface of the cover 28 at the time of standing and rising is sufficiently longer than the cross-sectional chord length L of the hull 2, so that the hull 2 covers the hull 2 when the vehicle is traveling. Never receives lift from the ground effect. Even if the boat 2 descends following the overhead line 36 while traveling,
If H> L, there is no influence of the ground effect.

FIG. 17 is a pneumatic control circuit diagram for controlling the opening / closing operation of the auxiliary covers 29, 30 and the standing / falling operation of the column 3. In the figure, S1 is a cylinder 31 that opens and closes the auxiliary cover 29, S2 is a cylinder 32 that opens and closes the auxiliary cover 30, and S3 is a cylinder 12 that drives the support column 3 up and down. V1 and V2 are auxiliary covers 29
Is an air pressure sensor (two-port operation valve) that detects the open state of the auxiliary cover 30, V3 and V4 are air pressure sensors (two-port operation valve) that detect the open state of the auxiliary cover 30, and V5 and V6 are the start and Air pressure sensors (three-port actuation valves) that detect the fall, and V7 and V8 are air pressure sensors (two-port actuation valves) that detect the up and down of the column 3. C1-C4 are
A check valve connected in parallel to the air pressure sensors V1, V2, V7, and V8. The double circle symbol on the pneumatic piping is the speed controller.

FIG. 18 is a sequence diagram showing the operation in the pneumatic control circuit diagram of FIG. By these operations, the auxiliary covers 29, 30 and the support column 3 are interlocked with each other, and it is possible to prevent them from interfering with each other during operation. As described above, since the support column 3 and the boat body 2 can be housed in the cover 28, the pantograph may not be used depending on the vehicle for convenience of train formation. In such a case, by storing the cover 28 in the cover 28, the running resistance can be reduced as compared with the case where the cover 28 is exposed, and unnecessary aerodynamic noise can be suppressed. In the embodiment, the turning mechanism section is arranged in the lowermost layer, the raising and lowering mechanism section is further arranged thereon, and the boat elevating mechanism section is further arranged thereon. The positional relationship is arbitrary and can be configured by other combinations.

[0035]

As described above, according to the present invention, the direction of the pantograph can be reversed depending on the traveling direction of the vehicle, and the cross-sectional shapes of the boat and the support exposed from the cover are formed in a symmetrical streamline shape. By doing so, generation of Karman vortices can be suppressed and aerodynamic noise can be reduced. Further, when the cover is in the shape of an arm and the pantograph is not used due to reasons such as the formation of the vehicle, the pantograph is folded down and stored in the cover, so that generation of unnecessary noise can be reduced.

[Brief description of drawings]

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

FIG. 2 is an enlarged sectional view of the boat of FIG.

FIG. 3 is an enlarged sectional view of another embodiment of the boat of FIG.

FIG. 4 is a view showing an internal structure with a cover removed from FIG.

FIG. 5 is a plan view of FIG.

FIG. 6 is a left side view of FIG.

FIG. 7 is an explanatory diagram showing a lifting operation of the embodiment.

FIG. 8 is an explanatory diagram showing a tilting operation of the embodiment.

FIG. 9 is an explanatory diagram showing a raising / lowering operation of the embodiment.

10 is a cross-sectional view taken along the line AA of FIG.

11 is a sectional view taken along line BB of FIG.

FIG. 12 is an explanatory diagram showing a pivoting operation of the column of the embodiment.

FIG. 13 is an explanatory diagram showing the operation of the auxiliary cover of the embodiment.

FIG. 14 is a plan view of FIG.

FIG. 15 is a left side view of FIG.

16 is a sectional view taken along line DD of FIG.

FIG. 17 is a pneumatic control circuit diagram for controlling the operations of the auxiliary cover and the support.

FIG. 18 is a sequence diagram showing operations of an auxiliary cover and a support.

FIG. 19 is a diagram showing a conventional example.

FIG. 20 is a plan view of FIG.

FIG. 21 is a right side view of FIG. 19;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 picking plate 2 boat 2a guide 3 support 4 bearing 5 guide rod 6 support cylinder 7 turning shaft 8 lifting mechanism part receiving 9 frame 10 pneumatic cylinder 11 link 11a long hole 12 pneumatic cylinder 13 arm 14 stopper 15 pneumatic Cylinder 16 Rack 17 Pinion 18 Ball bearing 19 Piston part 20 Receiver 21 Roller 22 Guide 23 Restoring spring 24 Insulator 25 Inner lid 26 Stud 27 Piping 28 Cover 28a, 28b Opening 29, 30 Auxiliary cover 31, 32 Pneumatic cylinder 33 Link 34 Rail 36 Overhead wire 37 Roof 38 Bearing base 39 Floor plate 39a Separation plate 40 Bolt 41 Support frame 43,44 Bracket 45 Hinge 46 Rod 47 Pin C1-C4 Check valve S1-S3 Pneumatic cylinder V1-V8 Pneumatic sensor

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[Procedure amendment]

[Submission date] November 21, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

The invention of claim 2 is the same as that of claim 1.
Insert the support member that supports the pick-up board into the elastic member from above
No it and it said. This facilitates replacement when the pickpocket is worn.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

According to a third aspect of the present invention, in the first or second aspect of the present invention, the trailing edge portion of the picking plate is provided with separation plates that are parallel or angled to the flow direction in the longitudinal direction at appropriate intervals. Is characterized by. As a result, the air flow in the rear part of the pick-up plate is divided in the lengthwise direction of the pick-up plate to generate a separation phase difference, and the development of the boundary layer is suppressed to a minimum.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

The invention of claim 4 is characterized in that, in the invention of claim 1 or 2, the cross-sectional shape of the upper surface of the pick-up plate is formed in a streamline shape continuous to the cross-sectional shape of the boat. Thereby, peeling at the ground sheet portion is suppressed.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

A fifth aspect of the present invention is characterized in that, in the invention according to any one of the first to fourth aspects, the front end of the pillar is shaped so as to retreat rearward in the traveling direction as it goes upward. This reduces the vertical component of the air flow.
Therefore, fluctuations in lift can be reduced.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, a link for expanding the stroke of the pneumatic cylinder and the pneumatic cylinder in the boat elevating mechanism portion and transmitting the stroke to the support column. It is characterized by having a mechanism. As a result, the hull generated when the hull moves up and down while the vehicle is traveling.
The frictional force of the pneumatic cylinder itself in the section is reduced, and the followability and responsiveness are improved.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the control device controls the opening / closing operation of both auxiliary covers in conjunction with the operation of the tilting mechanism section. It is characterized by As a result, the opening of the cover is closed when the pantograph stands up and when the pantograph falls and is housed in the cover, so that turbulent flow from the cover is minimized. Also, a blank for opening and closing the cover
Eliminates the need for air piping and insulators.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

The invention of claim 8 is characterized in that, in the invention of any one of claims 1 to 7, the cover is formed of a porous plastic material. This enables sound absorption .

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, the distance from the lower surface of the hull to the upper surface of the cover when standing and rising is 1.0 times the chord length of the hull cross section. It is characterized by the above. As a result, the ground effect immediately
The effect that pressure fluctuations on the top surface of the cover do not affect the bottom of the boat
There is.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing a usage state of an embodiment of the present invention. In the figure, reference numeral 37 denotes a vehicle roof, and a cover 28 made of porous plastic, which is an insulating material, is installed at an end portion of the vehicle roof 37.
The column 3 projects upward from the top of the cover 28.
The boat body 2 is integrally fixed to the upper ends of the support columns 3 at right angles to the traveling direction and in the horizontal direction. The pick-up plate 1 is held on the upper surface of the boat body 2, and the pick-up plate 1 comes into contact with the overhead line 36 to collect current. In addition, since the cover 28 is made of porous plastic, it is possible to insulate the pillar 28 from the insulation.
No need for extra work.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

FIG. 2 is an enlarged cross-sectional view of the boat body 2, in which a groove for mounting the pick-up plate 1 is formed on the upper surface side of the boat body 2 in the direction perpendicular to the drawing, and a guide 2 a is formed in the center thereof. It is projected. The guide 2a includes a restoring spring 2 made of a rubber material.
3 is fitted, and a support frame 41 having a U-shaped cross section is fitted on the upper part of the restoring spring 23 and is integrally supported. The pick-up plate 1 is placed on the upper surface of the support frame 41 via the floor plate 39, and the pick-up plate 1 is fixed by inserting the bolt 40 upward from the lower surface of the support frame 41. As described above, since the pick-up plate 1 is fixed by the bolts 40, when the pick-up plate 1 is worn, it can be easily replaced.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

The restoring spring 23 may be a leaf spring or a coil spring other than rubber. In addition, at the rear extended portion of the floorboard 39, a triangular separating plate 39a is provided.
Are fixed to the picking plate 1 and the floor plate 39 in parallel with the air flow direction and at appropriate intervals. Therefore, even if the pick-up plate 1 on the upper surface of the hull 2 moves up and down and the surface shape of the hull 2 becomes discontinuous due to the deviation from the upper surface of the hull 2, the air flow is picked up at the trailing edge of the pick-up plate 1. The development of the boundary layer is suppressed to a minimum by separating the plate 1 in the longitudinal direction and causing a peeling phase difference.
You.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

FIG. 3 is an enlarged sectional view showing another embodiment of the boat body 2. The difference between this embodiment and the embodiment of FIG. 2 is that a carbon material is used to form the cross-sectional shape of the pick-up plate 1 into a streamline shape that is continuous with the cross-sectional shape of the boat body 2 , and is fixed to the support frame 41 by brazing. It was done. As a result, the air flow in the portion of the pick-up plate 1 is stabilized and turbulent flow generation is suppressed.
The structure of the other parts is common to the embodiment of FIG.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

As shown in the operation diagram of FIG. 7, when the cylinder 10 moves forward, the guide rod 5 connected to the link 11 descends so that the support column 3 and the boat body 2 move. To descend. When the cylinder 10 retreats, the guide rod 5 rises, the pillar 3 and the boat 2 rise, and the pick-up plate 1
Is pressed against the overhead wire 36. Here, by adjusting the air pressure supplied when the cylinder 10 moves backward, the upward pressing force of the support column 3 and the boat 2 can be adjusted to an optimum state. Particularly, in this embodiment, since the stroke of the cylinder 10 is expanded to L2 / L1 times by the link 11 and then transmitted to the support column 3, the support column 3 generated during traveling is generated.
The frictional force of the cylinder 10 following the vertical movement of the side becomes small.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction contents]

As a result, the cylinder 1 supporting the support column 3
The influence of the friction of the piston about 0 and the inertia of the rod and the piston is reduced, and the responsiveness of the boat 2 and the support 3
Trackability is improved. In the embodiment, it was confirmed that sufficient followability can be obtained when the friction during the vertical movement of the column 3 is set to 1 kg or less. In addition, the cross-sectional shape of the support column 3 is bilaterally symmetrical streamlined, and its front end portion is covered with
The part exposed upward from is retracted backward as it goes upward. As a result, the vertical component of the air flow
Is reduced, and lift fluctuation, that is, aerodynamic noise is suppressed.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kunio Shibayama 1-1, Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd.

Claims (10)

[Claims] 1. A boat body having a streamlined cross section while detachably holding a pick-up plate on the upper surface, a support having a streamlined cross section while supporting the boat body in a T shape at the upper end, and a vertical movement of the support column. A boat lifting mechanism that freely supports and pushes upward with a constant pressure when rising, and a tilting mechanism that raises and lowers the boat lifting mechanism and holds the column vertically when standing. A turning mechanism that supports the mechanism and turns 180 degrees, a cover that is installed on the vehicle roof and has an arm-shaped cross section in the traveling direction, and a support that is formed on the top of the cover to penetrate the support when standing and support the support when falling. And an opening for allowing the boat to pass through, an auxiliary cover for openably and closably covering the column penetrating side of the cover opening, and an auxiliary cover for openably and closably covering the column of the opening of the cover and the boat passage side. , Equipped with Characteristic pantograph. 2. The pantograph according to claim 1, wherein the pick-up plate is attached to the boat body via an elastic supporting member. 3. The pantograph according to claim 1 or 2, wherein separating plates, which are rear edges of the picking plate and are parallel to the flow direction in the longitudinal direction, are provided at appropriate intervals. 4. The pantograph according to claim 1, wherein the cross-sectional shape of the upper surface of the pick-up plate is formed in a streamline shape continuous with the cross-sectional shape of the hull. 5. The pantograph according to any one of claims 1 to 4, wherein the front end of the column is shaped so as to recede rearward in the traveling direction as it goes upward. 6. The pantograph according to any one of claims 1 to 5, wherein the boat lifting mechanism includes a pneumatic cylinder and a link mechanism for expanding a stroke of the pneumatic cylinder and transmitting the stroke to the support column. Pantograph featuring. 7. The pantograph according to any one of claims 1 to 6, further comprising a control device that controls opening / closing operations of both auxiliary covers in conjunction with operations of a tilting mechanism section. pantograph. 8. The pantograph according to any one of claims 1 to 7, wherein the cover is made of a porous plastic material. 9. The pantograph according to claim 1, wherein the distance from the lower surface of the hull to the upper surface of the cover at the time of standing and rising is 1.0 or more times the chord length of the hull cross section. Characteristic pantograph. 10. The pantograph according to any one of claims 1 to 9, wherein a cover opening through which the supporting column penetrates is formed in a circular shape with a part cut off, and an outer periphery of the opening is slidably contacted with and inside. A pantograph characterized in that an inner lid having a through hole for allowing the column to pass through is vertically supported at the same level as the cover from below the column side.