JPS5832404Y2 - Auxiliary current collector boat in pantograph type current collector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an auxiliary current collector boat in a pantograph type current collector device that is mounted on the roof of an electric railway vehicle and collects current from an overhead contact line.

In recent years, in order to improve the ability of pantograph-type current collectors to follow overhead contact lines, a small-mass auxiliary current collector boat has been installed in addition to the normal current collector boat, and this auxiliary current collector boat has a relatively low mass. A new attempt is being made to make it possible to follow the slight irregularities of overhead contact lines by supporting it with springs and increasing its natural frequency.

As mentioned above, this auxiliary collector boat has a small mass, and
Since it is relatively supported by a spring, the natural frequency is high, and the range of vertical movement is therefore small.

The provision of such an auxiliary current collector for the pantograph type current collector clearly shows a reduction in the wire loss rate, and the effect is significant.

FIG. 1 is a plan view showing the configuration of an auxiliary collector boat in a conventional pantograph type current collector, and FIG. 2 is an enlarged side sectional view taken along the line 1--2 in FIG.

In the figure, 1 and 2 are main current collector boats arranged parallel to each other, and 3 and 4 are supports for the main current collector boats 1 and 2, and a frame (not shown) for supporting the main current collector boats 1 and 2. ) K connecting members, 5 and 6 are main collector boats 1 and 2
The support member of the auxiliary collector boat stretched between 0, T and 8
Both ends of the support members 5 and 6 are bent into a U-shape, and the support members 5 and 6 are attached with bolts or the like at both ends of the U-shape.
A leaf spring 9 made of a relatively solid material is attached to each of the main collector boats 1 and 2, and is arranged parallel to the main collector boats 1 and 2 at the exact middle part of the main collector boats 1 and 2. These are auxiliary current collector boats of small mass fixed to the upper surfaces of 7 and 8, respectively.

The auxiliary current collector boats in the pantograph type current collectors that have been attempted in the past are constructed in this way, and normally the main current collector boats 1 and 2 and the auxiliary current collector boat 9 are all in contact with the overhead contact line. , a slide plate attached to the top surface of each (
(not shown), but if the main collector boats 1 and 2 are separated from the line due to unevenness of the overhead contact line, the leaf springs 7 and 8 made of a relatively rigid material with small mass The auxiliary current collector boat 9, which has a high natural frequency and is supported by the support members 5 and 6vc via the overhead contact line, quickly follows the overhead contact line, and current is collected by the auxiliary current collector boat 9.

However, in such a configuration, when the vehicle is stopped, the auxiliary current collector boat 9 is kept horizontal, but when the vehicle is running, the frictional force due to sliding contact with the overhead contact line is generated. As a result, as shown in FIG. 3, this auxiliary current collector boat 9 is tilted for 5K, causing irregular deflection in the leaf springs 7 and 8, and as a result, the original spring action of these leaf springs 7 and 80 is impaired. Unavoidable uneven wear of the slider plate of the auxiliary current collector boat 9 has been a major obstacle to practical use.

The present invention was developed to solve the above-mentioned problems with the auxiliary current collector boats of pantograph type current collectors that have been attempted in the past, and can effectively prevent uneven wear of the sliders. This invention provides an auxiliary current collector boat in a pandagraph type current collector.

Hereinafter, the details of the present invention will be explained based on FIGS. 4 to 6.

Fig. 4 is a plan view showing one embodiment of the present invention, and Fig. 5 is a plan view showing an embodiment of the present invention.
It is a front sectional view taken along the line V-■ in the figure.

In the figure, 1 and 2 are main current collector boats arranged parallel to each other, and 3 and 4 are supports for the main current collector boats 1 and 2, and a frame (not shown) for supporting the main current collector boats 1 and 2. ), 9 is a small-mass auxiliary current collector boat arranged parallel to the main current collector boats 1 and 2 at the middle part of the main current collector boats 1 and 2, and 10 and 11 are the members connected to this on the upper surface. The holding members 12 and 13 of the auxiliary current collector boat 9 are fixed to both end portions of the auxiliary current collector boat 9 and extend close to the sides of the main current collector boats 1 and 2, respectively. Support members 14 and 15 of the auxiliary current collectors are attached to the sides of the main current collectors 1 and 2 facing each other.
16 and 17 are support members of the auxiliary current collector boats that are attached to the sides of the main current collector boats 1 and 2 facing each other at the outer part of the other end of the auxiliary current collector boat 9; U-shaped leaf springs made of a relatively rigid material that are attached to the members 12 and 13, respectively, are oriented parallel to the main collector boats 1 and 2, and have both end portions of the holding member 100 fixed to the upper surface of the other end. , 18 and 19 have one end attached to the support members 14 and 15, respectively, by bolts tx, etc., and are oriented parallel to the main collector boats 1 and 2, and both end portions of the holding member 110 are fixed to the upper surface of the other end. It is a U-shaped leaf spring made of relatively stiff material.

The present invention is constructed in this way, and the auxiliary current collector boat 9 is connected to the U-shaped leaf springs 16, 17, near the sides of the main current collectors 1 and 2 via the holding members 10 and 11. It will be supported at four points by 18 and 19.

When such a device is viewed from the side, it equivalently looks like the one shown in FIG. 6.

In other words, both ends of the horizontally arranged beam B are connected to the spring S.
The beam B is supported by the holding members 10 and 11 of the auxiliary collector boat, the spring Sl is supported by the U-shaped leaf springs 17 and 19, and the spring S2 is supported by the U-shaped leaf springs 17 and 19. The center point C of the plate springs 16 and 18 or the beam B corresponds to the fixing center of the auxiliary current collector boat 9.

In such a beam B of springs Sl and S2
If the distance between the fulcrums is tl, and the spring constants of the springs S1 and S2 are both k, then the spring constant in the vertical direction with respect to the beam Bvc is 2 regardless of t.

Now, the moment M required to tilt this beam B by θ (rad) is expressed by the formula M=so・k・δ.

δ in this equation is the deflection of the springs S and S2, and there is a relationship of δ=100·θ.

Therefore, M=(4)2・k・θ, and the vertical swing stiffness Y of beam B centered on the 0 point is M=(4)2・k・θ.
The vertical swing stiffness of the beam Bθ θ 2 is proportional to the square of the distance t between the supporting points of the springs Sl and S2 with respect to the beam BVc.

In other words, the longer the distance between the springs SI and 82 that support the beam B becomes less likely to tilt.

Therefore, when considering the present invention from this perspective, it is found that the present invention has an auxiliary current collector boat 9 as described above.
, holding members 10 and 11 corresponding to beam B in FIG.
The main collector boats 1 and 2 are supported at four points near the sides by U-shaped leaf springs 16, 17, 18 and 19 via Because the distances between the leaf springs 16 and 17 and between 18 and 19 are quite large, the retaining members 10 and 11 of the auxiliary current collector can be tilted slightly (<, when the vehicle is running, they cannot come into sliding contact with the overhead contact line). The accompanying frictional force can sufficiently prevent the auxiliary current collector boat 9 from tilting.

Therefore, the slide plate of the auxiliary current collector boat 9 does not wear out unevenly, and it is not only usable for practical use, but also the mass of the auxiliary current collector boat 9 is small, and the auxiliary current collector boat 9 can be supported easily. Since the U-shaped leaf springs 16, 17, 18, and 19 are made of a relatively stiff material, the natural frequency is sufficiently high, and it also has the effect of being able to sensitively follow even the slightest irregularities on the overhead contact line. It is something that you have.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the configuration of an auxiliary collector boat in a conventional pandagraph type current collector; Fig. 2 is an enlarged side sectional view taken along the line ■-■ in Fig. 1; The figure is a side view showing the auxiliary collector boat in a tilted state in Figures 1 and 2, Figure 4 is a plan view showing an embodiment of the present invention, and Figure 5 is taken along the line V-V in Figure 4. FIG. 6 is an equivalent view for adding a mechanical consideration to the operation of the auxiliary current collector according to the present invention. 1.2... Main collector boat, 5, 6, 12, 13゜1
4.15... Support member, 7, 8, 16, 17° 18.19... Leaf spring, 9... Auxiliary collector boat, 10° 11... ...Holding member.

Claims (1)

[Scope of utility model registration request] An auxiliary current collector boat with a small mass is arranged in parallel with the main current collector boats between two main current collector boats arranged parallel to each other,
This auxiliary current collector is attached to support members provided so as to protrude from the mutually opposing side surfaces of the main current collector via holding members to which both end portions of the auxiliary current collector are respectively fixed to the upper surface. , characterized in that four U-shaped leaf springs made of a relatively solid material are installed parallel to the main collector boat at a portion as close as possible to the side surface to provide four-point support. Auxiliary collector boat for pantograph type collector.