JPH0329926Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a current collector for electric vehicles such as pantographs, and in particular, in order to improve the ability of the current collector to follow the contact lines, a plurality of sliders are installed in each of the current collectors. This invention relates to a current collector boat device that is elastically supported and integrated into a boat hull.

[Conventional technology]

A current collector for electric cars (hereinafter referred to as a pantograph) is used to smoothly collect electricity from the overhead contact line into the vehicle. In order to do this, the pantograph frame that supports the boat body is applied with spring force or the like, and the slider is pressed against the contact line with a constant force through the boat body.

If the running speed of the vehicle is high or the construction accuracy of the overhead contact line is poor, the sliding part of the pantograph may separate from the overhead contact line and generate an arc. The occurrence of this arc not only shortens the life of the sliding parts of the overhead contact lines and pantographs, but also causes radio wave interference in areas along the overhead contact lines, damaging the living environment. must be suppressed as much as possible.

In order to suppress the occurrence of arcs, it is only necessary to improve the following ability so that the sliding parts of the pantograph do not separate from the overhead contact line, and efforts have been made to reduce the moving mass as much as possible.

"Vehicle current collector" and Utility Application No. 150672 filed by the present applicant and others in Utility Application No. 150672-
38726 will be described as an example of improving the followability of the slider to the overhead contact line.

Figure 5 is a plan view of the hull, and Figure 6 is a front view of the main parts of the hull, showing a hull assembly in which two hulls 4' are usually integrated by a connecting arm 7' or the like. ,
It is attached to the frame tube assembly (not shown) via a spring or the like.

A plurality of sliding plates 1a', 1 on one hull 4'
b' are each supported in a row via springs 8,
An auxiliary slide plate 6' is attached to the upper surface of both ends, and the portion of the slide plate 1a' opposite to the auxiliary slide plate 6' is rotatably supported by the boat body 4' by a pin 9, and the other end and Adjacent ends of the slider plate 1b' located in the middle are connected to each other by an elastic connecting member 11, so that the upper surfaces of all the slider plates form the same plane. . Incidentally, a shunt 10 is connected to the boat body 4' from each of the sliding plates 1a' and 1b', and is supplied with electricity.

The boat body assembly constructed as described above is attached to a frame assembly pipe section (not shown), and the surface of the slider plate is pressed against the contact wire 5 by a main spring (not shown) or the like.

The dynamic behavior of the sliders 1a', 1b' and the overhead contact line 5 in such a structure will be explained. train line 5
Generally, when the is stretched in a straight line with respect to the running direction,
Since the slider slides on the same part of the slider and causes intensive groove wear, it is installed in a zigzag pattern with respect to the running direction.
Although the distance from the rail surface is kept constant as much as possible, it is impossible to maintain a completely constant distance.

Therefore, when the pantograph runs, the contact line 5
While reciprocating in the longitudinal direction of the boat body 4', the contact plate surface comes into contact with the contact line according to the distance from the rail surface of the contact line 5, moves and slides, and collects current.

In order to improve the followability of the contact wire 5 and the sliders 1a' and 1b', if the pressing force of the pantograph is kept constant, the follow-up acceleration is increased by the amount of the reduced moving mass. Therefore, the overhead contact line 5 and the slider plates 1a', 1 will be affected by vibrations that are larger in proportion to the increased acceleration.
b' maintains its tracking, smooth current collection is achieved, and extremely harmful phenomena such as arcing can be avoided.

In this way, in the configuration of the current collector shown in FIGS. 5 and 6, a plurality of slider plates 1a' and 1b' are supported by springs 8, and the parts corresponding to the overhead contact line 5 are made lighter. We are increasing our followability by making it easier to follow.

[Problem that the invention attempts to solve]

However, the conventional device described above has two problems. First, there is the problem of a difference in level when the contact wire 5 transitions from one side to the other at the adjacent ends of the slider plates 1a' and 1b'. FIG. 7 is a partially enlarged front view of the adjacent end of the slider plate, and when the contact line 5 arrives at the end of the slider plate 1a', the pressing force of the contact line 5 is
Although it is applied directly to a', it is indirectly transmitted to the slider plate 1b' via the elastic connecting member 11. If the elastic connecting member 11 is completely rigid, the force applied to the slider plate 1a' will be equally transmitted to the slider plate 1b' side, so there will be no difference in level between the adjacent parts, causing no problem. However, this defeats the purpose of dividing the strip and reducing its weight. On the other hand, in order to achieve mechanical insulation between the adjacent slider plates 1a' side mass and 1b' side mass, the elastic connecting member 11 must have extremely flexible spring characteristics. Slide plate 1
The pressing force against a' is not transmitted to the slider plate 1b', and a step is created in the vertical direction between the slider plate 1a' side and the slider plate 1b' side. The transition to ′ will no longer be smooth.

As shown in FIG. 5, the adjacent parts of the slider plates 1a' and 1b' have an inclination angle to each other and overlap partially, but this completely eliminates the above phenomenon. cannot be avoided.

Therefore, the spring characteristics of the elastic connecting member 11 are set by adjusting the above-mentioned two, but in any case, since the elastic connecting member 11 needs to have flexibility, the side to which the pressing force is directly applied corresponds to the flexibility of the elastic connecting member 11. The occurrence of a level difference between the side and the side to which the transmission is indirectly transmitted is unavoidable, leading to problems such as groove wear in this part and vibration induced by the transition of the level difference.

Furthermore, the second problem is that the size of the slider when it is divided is limited by the size of the other components, so it cannot be made much smaller, and conversely, the increased mass of the added parts reduces its effectiveness. That's essentially a low point.

That is, as shown in FIG.
Necessary parts for supporting a' and 1b' are an elastic connecting member 11, a spring 8, a pin 9, a shunt 10, etc., and the slider plates 1a', The length of 1b' cannot be made small, and also in the width direction, each part is subject to strength and structural constraints, so it cannot be made very small. In particular, the longitudinal dimension of the elastic connecting member 11 needs to have spring characteristics in addition to strength, so the effective spring length l becomes large, and the dimension cannot be reduced to an extreme degree.

Therefore, the divided dimensions of the slider plates 1a' and 1b' cannot be made too small, and on the contrary, the necessary components such as the elastic connecting member 11, spring 8, pin 9, shunt 10, etc. will increase, and the mass will increase accordingly. As the increase
There is a problem that reliability and economic efficiency are reduced.

[Means for solving problems]

The present invention solves the above-mentioned drawbacks of the conventional method, and makes the size of each divided slider plate extremely small.
At the same time, it improves tracking ability by reducing the mass of motion of the contact plate that contacts the contact line while preventing the occurrence of steps in adjacent areas.Furthermore, it prevents groove wear and vibration induction in adjacent areas, and improves aerodynamics at high speeds. It is an object of the present invention to provide an excellent support structure for a slider plate, which reduces drag and noise caused by the slider plate and also equalizes the contact surface pressure between the slider plate pieces and the overhead contact line.

That is, the slide plate is divided into a large number of small pieces, each of the divided slide plate pieces is formed into a dogleg shape, and the following is formed on the open side of the dogleg shape with respect to the plane in the longitudinal direction of the boat body. The center part of the dogleg-shaped stripping plate piece enters, and the length from the center part of the scraping plate piece to the end is from the center of the dogleg-shaped piece to the center of the next dogleg-shaped striping plate piece. Place the strips so that the spacing is longer than the spacing between them.
The electrically conductive and elastic leaf spring bodies are arranged in a plurality of rows below the slider plate pieces, and an elastic body is arranged so that each of the slider plate pieces can move independently. It is constructed by attaching this elastic body to the hull of the boat, and when the overhead contact line moves horizontally, the slope shape that wraps the transition between adjacent pieces of the slide plate provides a smooth guiding effect. This eliminates the difference in level between adjacent units.

Specifically, divided pieces of the slider plate are adjoined and fixed to a plurality of rows of elastic conductive plate materials such as stainless steel or phosphor bronze, which connect the rows of each slider plate piece, and the conductive plate members are The lower part of the slider is elastically supported on the boat body in correspondence with each small piece of slider.

Hereinafter, the present invention will be described in detail based on embodiments with reference to the drawings.

〔Example〕

FIG. 1 is a plan view of essential parts of an embodiment of the current collector device according to the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a cross-sectional view taken from A to A in FIG. Figure 5,
The same reference numerals as in FIG. 6 indicate parts having the same functions.

In FIGS. 1 to 3, two boat bodies 4 (only one is shown) are integrated by a connecting arm 7, attached to a pantograph frame, and connected to a contact line 5 by a spring force or the like. It is configured to press the slide plate on the upper surface of the body 4.

The slider plate 1 is divided into a large number of parts on the upper surface of each boat body 4, and the divided slider plate pieces 1a, 1
b is formed in a dogleg shape. And the hull 4
A small slide plate piece 1b is arranged at both ends in the longitudinal direction (one side is not shown), and a small slide plate piece 1b is provided between
a are arranged in a row like "<<<...". When arranging the slide plate pieces _1a , as shown in FIG. The center part B of the slider plate small piece 1 _a-2 is inserted. At this time, the length from the center C to the end of the small slide plate piece 1 _a-3, that is, the slope dimension T of the mountain shape, is set to be at least larger than the spacing S between the small slide plate pieces 1 _a-1 and 1 _a-2 . Two or more slider plate pieces are arranged so as to be in constant contact with the wire 5.

Between each row, the slide plate pieces 1a and 1b are fixed by bolts or the like to three continuous elastic stainless steel plates at the center and both ends. In this embodiment, a stainless steel plate was used, but other elastic plates such as phosphor bronze may be used as long as they have a spring action and good rust prevention and conductivity.

The above-mentioned stainless steel steel plate is constructed by dividing the plate spring body 2 in the longitudinal direction of the boat body 4 so that the small pieces of the slider plates are elastically linked and so that the whole can be attached to and detached from the boat body 4 as a whole. Arranged leaf spring body pieces 2a, 2
b and 2c are integrally formed using bolts or the like. And the leaf spring body small piece 2
Support springs 3 as elastic bodies are provided between a, 2b, 2c and the boat body 4 in correspondence with the slide plate pieces 1a, 1b, respectively, and these are attached to the upper part of the boat body 4 with, for example, bolts. The plate support structure is integrally formed.

Further, each of the small pieces of the slider plate 1b located at both ends has a dogleg-shaped (hereinafter referred to as a chevron) slope part, and the corners of the upper surface thereof are cut diagonally over the entire outer edge.
Corresponding to this chevron shape, the slide plate small piece 1b side of the auxiliary slide plate 6 is also made into a chevron shape, and in the vehicle running direction, it is made to overlap with the slide plate small piece 1b,
Like the small slide plate piece 1b, the top corner of the chevron shape is made oblique so that the contact wire 5 can smoothly slide between the small slide plate piece 1b and the auxiliary slide plate 6. Here, there is almost no possibility that the contact wire 5 comes further away from the slider plate pieces 1a, 1b and comes into sliding contact with the auxiliary slider plate 6.

Next, in the current collector boat device of this embodiment, the behavior when the overhead contact wire 5 slides on the top surface of the slider plates 1a, 1b will be explained using FIG. 4 while referring to FIGS. 1 to 3. explain. FIG. 4 is an enlarged front view of the vicinity of a small piece of the slider plate that comes into sliding contact with the overhead contact line in a cross-section seen in the direction of arrow A in FIG. 1.

In Figures 1 to 4, if the overhead contact line 5 has now arrived at the extreme end of the central part of the slider plate piece 1a _-1, the pressing force will be near the center of the slider plate piece 1a _-1. Plate small piece 1 Receives pressure at three points on the chevron-shaped double-slanted part of _a-4 . In other words, in Fig. 4, it is a cross-section of the central part in the direction of arrow A, so it looks as if the adjacent ends are cut off at this part, but the chevron-shaped diagonal part is a small piece of the strip plate 1 _a-
2 , both ends of the diagonal shape are in contact with the overhead contact line 5, allowing smooth current collection. Next, when the contact wire 5 moves from this state toward the slide plate small piece 1 _a-2 , the force received by the slide plate small piece 1 _a-2 is transferred to the slide plate small piece 1 a through the leaf spring body pieces 2 _a to c. _-2
As a result, the small slide plate piece 1 _a-2 also bends downward, and the difference in level between it and the small piece of the slide plate 1 _a-1 becomes slight. Furthermore, initially, sliding contact is made on the very narrow adjacent surfaces of the center part, and at this time, the double diagonal part of the chevron shape of the slide plate small piece 1 _a-1 serves as a guide, so that the center part does not sink excessively due to the pressing force. The transition will be smooth. In this state, the moving mass of the pantograph side that moves in accordance with the overhead contact line 5 is the small piece of slider plate 1 _a- which is in contact with the overhead contact line 5.
₁ , 1 _a-2 , 1 _a-4 . Since the slide plate pieces 1 _a-3 adjacent to these are supported by the support spring 3 so as to be able to move independently, the leaf spring bodies 3 a to 3 are
There is almost no movement, with only a slight movement related to the stiffness of the bend in c. In this case, the moving mass is only the mass of the slide plate pieces 1 _a-1 , 1 _a-2 , 1 _a-4 and the leaf spring body pieces 2 a to 2 c in the vicinity, and the moving mass of the entire boat body as in the conventional example. It is extremely small compared to . Further, since the leaf spring body pieces 2a to 2c are on the same plane and are interconnected with each other at extremely small intervals, the difference in level between adjacent pieces is suppressed to a small extent when the overhead contact line 5 moves, and smooth movement is achieved. Sliding contact is made.

Further, as a component for integrally supporting and constructing the slider pieces 1a and 1b, a special elastic connecting member 11 such as the conventional example explained in FIGS. 5 and 6 above,
Since the spring 8, pin 9, shunt 10, etc. are not required, when the slider plate is divided, it can be made extremely small both in the longitudinal direction and in the width direction.

Moreover, since the mass does not increase due to other parts, the moving mass becomes small, and the contact surface pressure in the running direction is made uniform, and the followability is greatly improved.

For example, when applying the Shinkansen pantograph standard and comparing the conventional example and the present example in terms of substantial moving mass, at least 1/20 to
It is possible to reduce the amount to 1/30 and obtain a dramatic effect.

[Effect of idea]

As explained in detail above, according to the current collector boat device according to the present invention, the moving mass of the pantograph-side sliding plate that moves in response to the overhead contact line 5 is small, and the current collecting action and following movement are dramatically improved. It is possible to prevent groove wear in the connecting parts and vibrations induced by differences in level. It also applies contact surface pressure more evenly at high speeds, reduces vibration and noise, and
It prevents the separation of the stripping plates 1a and 1b and prevents extremely harmful phenomena such as arcs from occurring, and achieves the purpose with a simple component configuration of the plate spring body pieces 2a to 2c and the support spring 3, which increases reliability. In addition to being expensive and economically advantageous, it is also simple and easy to maintain, providing many benefits.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts of an embodiment of the current collector device according to the present invention, FIG. 2 is a front view, FIG. 3 is a cross-sectional view taken from A to A in FIG. 1, and FIG. Fig. 1 is an enlarged view of the vicinity of a small piece of the slider plate that comes into sliding contact with the overhead contact line in the cross-sectional view of Fig. A front view of the main part, and FIG. 7 is a partially enlarged view of the end adjacent to the slider plate that makes sliding contact with the contact line. 1...Sliding plate, 1a, 1b, 1 _a-1 to ₄ ...Sliding plate small piece, 1a', 1b'...Sliding plate, 2a, 2b, 2
c...Small leaf spring body piece, 3...Support spring, 4, 4'
...Hull, 5...Train line.

Claims (1)

[Claims for Utility Model Registration] A current collector boat device having a slider plate 1, a leaf spring body 2, a support spring 3, and a boat body 4, wherein the slider plate 1 is a slider plate small piece 1a _-1. ,1 _a-2 ,1 _a-3 …
. . . and each of the slider small pieces 1 _a-1 , 1 _a-2 , 1 _a-3
...... is dogleg-shaped in plan, and there are always two or more pieces of slider plates 1 _a-1 , 1 _a-2 , 1 _a for the overhead contact line 5.
_-3 ...... are arranged in a row in the same direction with respect to the longitudinal direction of the boat body 4 so that they are in contact with each other, and the leaf spring bodies 2 are made of leaf spring body pieces 2a, 2b, 2c.
are arranged in multiple rows, and on top of them are the small pieces 1 _a-1 and 1 _a- of the slide plate 1.
₂ , 1 _a-3 ...... are arranged and fixed, and the hull 4 has each leaf spring body piece 2a, 2 on top of it.
b, 2c are fixed by a support spring 3. A current collector boat device.