JPS6047804B2 - Sliding current collector - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a sliding type current collector for a transport vehicle or a transfer/lifting device (for example, a train, an electric vehicle, a crane, etc.) that runs on electric power. be.

[Conventional technology/issues to be solved]

The conventionally used sliding type current collector is a so-called metal shoe made of a single conductive metal plate, and because it is extremely rigid, it cannot be attached to the power supply line by a suspension device such as a pantocrab. Despite being pressed, they are intermittently separated, resulting in poor current collection efficiency, frequent sparks, and large sliding noise.

Furthermore, since the pressing force of the pantograph is strengthened to prevent the above-mentioned separation, the contact pressure against the power supply line is high, and both the power supply line and the metal shoe wear out quickly.

On the other hand, in order to fundamentally solve the above-mentioned problems of conventional sliding type current collectors, such as low current collection efficiency, early wear, and sliding noise, for example, Japanese Patent Application Laid-Open No. 12513/1983 Rotating current collectors in the form of pneumatic tires have been developed as disclosed.

This rotating type current collector solves the problem of frequent separation from the power line due to its excellent cushioning performance, and its rotating type significantly reduces premature wear and sliding noise. However, as a practical matter, in order to adopt this rotating current collector, the ``overhead type'' power supply format currently adopted by most Japanese national railways and private railways must be replaced by the ``rule type'' power supply format. It can be said that this is impossible unless it is changed to

[Purpose of the invention]

Therefore, the present invention provides a practical solution to the above-mentioned problems in the conventional sliding type current collector, improves the unsatisfactory followability of the conventional metal shoe to the power supply line, and improves the ability of the conventional metal shoe to follow the power line. The present invention provides a sliding type current collector that has sufficient durability against the strong impact force received when going over unevenness or joint steps, has low noise, and has good wear resistance.

[Specific Means for Achieving the Object] In order to achieve the above object, the sliding type current collector of the present invention has a structure that includes:
A sliding type current collector in which a current collecting part and load supporting parts located on both sides of the current collecting part are supported and attached by independent spring members, wherein the horizontal substrate is made of a conductive metal material. The current collecting section includes a plurality of elongated plate-shaped current collecting elements arranged in parallel at a certain distance from each other, and both longitudinal ends of each current collecting element are supported on the horizontal substrate. and a rubber elastic spring member having at least an outer surface curved in an arc shape, and the current collecting elements are connected to each other and the current collecting elements and the horizontal substrate are connected by conductive wires. Ru.

The connection between the current collecting elements and the connection between each current collecting element and the conductive horizontal substrate may be made by separate conductive wires, respectively.
Alternatively, the same conductive wire may be used for both.

[Action/Effect]

The sliding type current collector of the present invention configured as described above has the following effects.

A load support section and a current collection section are separated by respective independent springs, and five load support sections are provided on both sides of the current collection section.

Therefore, (a) the spring constant of the load support part is made larger than the spring constant of the current collecting part, while the spring constant of the current collecting part is made low enough to be sufficient if the current collecting element is simply brought into contact with the power supply line. As a result, most of the load on the three power supply lines is borne by the load supporting section, so that the current collecting section, especially the current collecting element, suffers less wear and the sliding noise is also reduced.

Furthermore, since the current collecting part is less worn, the spring constant of the load supporting part can be further increased, and the distance from the power supply line 4 can be reduced. That is, they reduce wear and sliding noise and improve current collection efficiency. (b) There are load supporting parts on both sides of the current collecting part, and there is no cover for the current collecting element in the current collecting part unlike in the known pneumatic retirement type rotary current collector, so the current collecting element can be moved freely. The current collection capacity is large.

In addition, the current collecting element of the device of the present invention has a plurality of elongated plates arranged in parallel and is in surface contact with the power supply line, so that current collecting efficiency is good. Since it is a two-part type current collector, compared to conventional metal shoes, (c) it fits better into the unevenness of the power supply line, and (2) it has a better heat dissipation effect, and the three-part type current collector element has free deformability. and the elasticity of the rubber spring work together, (e) the ability to follow the power line is significantly improved.4 The sound attenuation effect of the rubber spring significantly reduces sliding noise.5. By burying the conductive wire connecting the element and the horizontal substrate inside the rubber spring as necessary or placing it outside the rubber spring, (g) the minimum contact necessary for current collection can be achieved as mentioned above. Appropriate spring constants can be set for the rubber springs to apply pressure to the current collecting element, so that the current collecting element exhibits good current collecting efficiency) and prolongs wear life.

(6) Since the current collecting elements are connected to each other by conductive wires, (h) the mechanical strength against the strong impact force received when climbing over the unevenness of the power supply line and the step between the joints is increased.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to illustrative drawings.

However, it is not limited to this. First, as illustrated in FIG. 5, the sliding type current collector according to the present invention is separated from each other by independent spring members 2 and 12 and supported on a single horizontal plate 5 made of conductive metal. a current collecting section 10 and load supporting sections 13 and 1 disposed on both sides of the current collecting section 10;
Equipped with 3.

Each load support part 13 is made of a sliding member 11 made of a material with low friction and high wear resistance, and a spring member 12 having a spring constant larger than the spring constant of the spring member 2 of the current collecting part 10. Become.

As shown in more detail in FIG. 1, the current collecting unit 10 includes a plurality of elongated plate-shaped current collecting elements 1 made of a conductive metal material.
... and a pair of rubber springs 2, 2 that elastically support both longitudinal ends of each current collecting element 1 on the horizontal plate 5.

Each current collecting element 1 is arranged parallel to each other at intervals in a direction orthogonal to the power supply line 6, and is arranged parallel to the first conductive metal 3.
are interconnected by.

Further, each rubber spring 2 is formed to have an arcuate cross-sectional shape, and a second conductive metal wire 4 connecting each of the current collecting elements 1 and the horizontal plate 5 is embedded therein. Note that in FIGS. 1 and 5, arrows indicate the sliding direction. Further, both ends of the first conductive metal wire 3 may be further extended and connected to the horizontal plate 5. In this example current collector configured as above,
First, the load support section 13 and the current collection section 10 are separated from each other by independent spring members 12 and 2 and are mounted on a single conductive horizontal plate 5, and the load support section 1
3 is composed of a sliding member 11 having low friction and high wear resistance, and a comb spring member 12 having a spring constant larger than that of the current collecting part 10, so that the load supporting part 13 is Example: Bears most of the pressing load on the power supply line 6 of the current collector. Therefore, the spring constant of the current collector 10 can be made low enough to allow each current collector element 1 to simply contact the power supply line 6, and as a result, the current collector, especially the current collector 1
There is less wear and sliding noise. On the other hand, since the current collecting element 1 suffers less wear, the spring constant of the load support part 13 can be further increased, and the distance from the power supply line 6 can be reduced. Furthermore, in the current collector of this example, a plurality of elongated plate-shaped current collecting elements 1 are arranged in parallel at appropriate intervals,
In addition, since both ends of each current collecting element 1 are supported by rubber spring members 2, 2 having an arcuate cross section and having an extremely small spring constant, they are in close contact with the irregularities of the power supply line 6 and have a heat dissipation effect. (because an appropriate space is created between each current collecting element 1 and the conductive horizontal plate 5), the ability to follow the power supply line 6 is significantly improved, and in addition, due to the sound damping effect of the rubber spring member 2. Sliding noise is also significantly reduced.

Furthermore, by embedding the second conductive metal wire 4 connecting each current collecting element 1 and the conductive horizontal plate 5 in the rubber spring member 2 having an arcuate cross section, the spring constant of the spring member 2 can be increased. is set to apply the minimum contact pressure necessary for current collection to the current collecting element, and by connecting each current collecting element 1 with the first conductive metal wire 3, it is possible to Even if the current collecting element 1 is damaged, its fragments are prevented from scattering and causing damage to nearby vehicle accessories and residents along the railway.

FIG. 2 shows the structure of a current collector 10 that is incorporated and used in a sliding type current collector of the present invention according to another embodiment.

In the current collecting unit 10 of this example, each rubber spring member 2 is formed to have a substantially triangular cross section with an arcuate hypotenuse, and the second conductive metal wire 4 extends outside the rubber spring 2. This is different from the one shown in FIG. 1 in that both ends of the first conductive metal wires 3 are connected to a horizontal plate 5. Due to the above configuration, especially since both ends of the first conductive metal wire 3 are connected to the conductive horizontal plate 5, even if the current collecting element 1 is detached from the rubber spring member 2, the element 1 will be scattered. to prevent damage to nearby vehicle accessories and residents along the route.

In addition, if the second conductive metal wire 4 is embedded in the comb spring 2 as in the embodiment shown in FIG. 1, the spring constant of the spring 2 will exceed a desired value. You can configure it as follows.

FIG. 3 shows yet another embodiment of the invention, which differs from the embodiment of FIG. 2 in that the second conductive metal wire 4 is omitted.

In this case, in order to avoid an increase in the wire diameter of the first conductive metal wire 3, the number of laid metal wires 3 is increased. Fourth
The figure shows yet another embodiment of the invention, in which each current collecting element 1 is arranged parallel to the power supply line 6.

This is applicable when the power supply line 6 is in the form of a wide rail. Note that the first conductive metal wire 3 also serves as the second conductive metal wire 4. [Effects of the Invention] As detailed above, the present invention improves the unsatisfactory followability of the conventional metal cable to the power supply line, and also improves the strong impact force received when climbing over the unevenness of the power supply line and the step between the joints. To provide a sliding type current collector that has sufficient durability against corrosion, low noise, and good wear resistance.

9 Brief Description of the Drawings Figures 1 to 4 are all explanatory diagrams of the current collecting section which is the main component of the sliding type current collector of the present invention, and A is a front view;
Mouth is a side view, C is a perspective view, and 2 is a plan view.

Claims (1)

[Scope of Claims] 1. A sliding type current collector in which a current collecting part and load supporting parts located on both sides of the current collecting part are supported by independent spring members and are mounted on a single horizontal substrate. In the device, the horizontal substrate is made of a conductive metal material, and the current collecting section includes a plurality of elongated plate-like current collecting elements arranged in parallel at a certain distance from each other, and each collecting element. a spring member made of a rubber elastic body having at least an outer surface curved in an arc shape and supporting both ends of the electric element in the longitudinal direction on the horizontal substrate; is a sliding type current collector characterized by being connected by conductive wires. 2. The sliding type current collector according to claim 1, wherein the connection between the current collecting elements and the connection between the current collecting elements and the horizontal substrate are made by separate conductive wires. 3. The sliding type current collector according to claim 1, wherein the same conductive wire serves both as the connection between the current collecting elements and the connection between the current collecting elements and the horizontal substrate.