JPH082123B2 - Electric car current collector - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a current collector for an electric vehicle, and more particularly to a current collector for an electric vehicle having an improved current collecting shoe.

[Conventional technology]

As described in Japanese Utility Model Laid-Open No. 52-19806, a conventional electric vehicle current collector has a turtle-shaped block as a current collecting shoe, which is slid so as to be orthogonal to the power supply train line. There is.

[Problems to be Solved by the Invention]

The above-mentioned conventional technique does not consider the disconnection phenomenon of the current collecting shoe with respect to the power feeding train line. That is, when the power supply train line is relatively new and there are few irregularities in the longitudinal direction, the current collecting shoe can obtain good follow-up characteristics, but wavy uneven wear develops in the longitudinal direction as the power supply train line is used for a long period of time. Then, if the current collecting shoe, which slides at high speed, cannot follow the tilting displacement of the small spring and collides with the convex part, there is a problem that the current collecting shoe instantaneously separates from the power feeding train line. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a final train device for an electric vehicle that can prevent a disconnection phenomenon even when a current collecting shoe slides at a high speed on a power supply train line that is unevenly worn in the traveling direction.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a current collecting device for an electric vehicle, comprising: pressing and sliding a current collecting shoe provided on a vehicle body with respect to a power supply trolley line arranged on the ground side. The electric shoe is formed of a flat plate member whose plate surface slides on the power feeding train line, and the maximum width of the plate surface of the flat plate member sliding on the power feeding train line is larger than the width of the power feeding train line. It is formed to have a wide width, and the length along the vehicle traveling direction is formed to be longer than the maximum width of the plate surface, and elastic bodies are provided at two positions in the longitudinal direction of the current collecting shoe at intervals. The elastic members are supported by a shoe support member parallel to the traveling direction of the vehicle, the shoe support member is further supported by a suspension member, the suspension member is pivotally supported on the vehicle body, and the current collecting shoe is attached to the suspension member. The means for pressing against the power supply train line is provided.

[Action]

According to the above configuration, the current collecting shoe is formed of a flat plate material, and the length in the vehicle traveling direction of the plate surface that slides with the power feeding train line is equal to or greater than the maximum width of the plate surface that slides with the power feeding train line. In addition to a means to press the current collecting shoe against the power supply train line,
Since the support member supports the two portions of the current collecting shoe, which are spaced apart in the longitudinal direction, via the elastic body, the current collecting shoe can be set in the longitudinal direction even with respect to minute unevenness in the traveling direction of the power feeding train line. Since the current-collecting shoe easily inclines along the unevenness as it makes contact with somewhere, it has good followability to the power-carrying trolley line and never separates. A current collector is obtained. Further, since the current collecting shoe is supported by a supporting member parallel to the traveling direction of the vehicle, even if the sliding resistance of the current collecting shoe is generated by the frictional force with the power feeding train line, the current collecting shoe is fed with power. The component force that lifts up from the trolley wire is not generated, and the current collecting shoe can be prevented from reaching the disconnection line.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. A mounting frame 3 is supported on the lower surface of a bogie 1 of a vehicle body via an insulator 2, and one end of a supporting arm 4 is rotatably supported by a pin 5 on the mounting frame 3. The support arm 4 has one end of a tension spring 6 connected to an intermediate portion thereof as a means for pressing a current collecting shoe 8 to be described later against a power supply train line 9. The support arm 4 is pulled up by connecting the other end of the tension spring 6 to the mounting frame 3.

On the other hand, a shoe support plate 7 formed of a flat plate material having a width parallel to the vehicle traveling direction is attached to the other end of the support arm 4 with a bolt.

The mounting frame 3 and the support arm 4 constitute a suspension member for the current collecting shoe 8.

A current collecting shoe 8 is attached to the tip of the shoe support plate 7 through an elastic body, and the tension spring 6 is arranged on the ground side so that the sliding surface faces downward and the power feeding train line 9 is provided.
Is pressed upwards.

The current collecting shoe 8 is formed of a flat plate material whose plate surface slides on the power feeding train line 9, and the maximum width W ′ of the plate surface of the flat plate material sliding on the power feeding train line 9 is used for the power feeding. It is formed to be wider than the width W of the trolley wire 9, and the length L along the vehicle traveling direction is formed to be longer than the maximum width W'of the plate surface (L≈240 mm or more). Further, both ends of the flat plate material along the vehicle traveling direction are bent so as to be separated from the power feeding train line 9 in order to mitigate a hit when the power feeding train line 9 passes through the joint. Further, in order to reduce the weight of the current collecting shoe 8, the plate material is made as thin as possible (9 to 12 mm), and the maximum width W'is, as shown in FIG. The width W of 9 is selected to be slightly wider than the width W of the electric train 9 so that the sliding of the electric train 9 does not come off even when the train runs horizontally.

Also, on the back surface on the side opposite to the sliding surface of the current collecting shoe 8,
Support rods 10 are fixed by welding or screwing at intervals along the vehicle traveling direction, and at the same time when an upper spring seat 11 formed of a heat insulating material is fitted into the support rods 10, an upper rubber ring 12 is attached.
Have been inserted.

On the other hand, an intermediate spring seat 13 is welded and attached to the shoe support plate 7 at a position facing the support rod 10, and the intermediate spring seat 13 is loosely fitted to the support rod 10.
A lower rubber ring 14 and a lower spring seat 15 of a heat insulating material are further fitted to the support rod 10, and a nut 16 is screwed in, and finally the current collecting shoe 8 is elastically supported by the shoe support plate 7.
The upper rubber ring which is an elastic body when the nut 16 is screwed in.
The dimensions of the lower rubber ring 14 and the lower rubber ring 14 are set so as to be slightly compressed and bent.

Because it is configured as above, due to long-term wear,
Even if the sliding surface of the power feeding train line 9 is uneven, since the current collecting shoe 8 is formed to be long, it does not separate from the power feeding train line 9 over the entire length of the current collecting shoe 8.

In addition, the current collecting shoe 8 is formed of a thin plate of a flat plate material for weight reduction, and then the upper rubber ring 12 and the lower rubber ring 1 of the elastic body are formed.
Since the shoe 8 is supported by the shoe support plate 7 via 4, the current collecting shoe 8 can easily follow and incline to the irregularities of the power feeding train line 9, and thus can follow the power feeding train line 9. The characteristics are improved, and the disconnection phenomenon can be effectively prevented.

Furthermore, since the current collecting shoe 8 is formed of a flat plate material having a width in the vehicle traveling direction and is supported by the shoe support plate 7, for example, due to a frictional force between the current collecting shoe 8 and the power feeding train line 9. It is possible to prevent the current collecting shoe 8 from being separated due to the generated sliding resistance without causing a component force for floating the current collecting shoe 8. If the current collecting shoe 8 is not supported by a supporting member parallel to the traveling direction of the vehicle, but is supported by a curved supporting member, a component force due to the sliding resistance is generated to cause the current collecting shoe 8 to move. Allowing for easy tilting, allowing for uplift and leading to derailment. Therefore, the current collecting shoe 8 is supported by a member parallel to the traveling direction of the vehicle, and the tension shoe 6 presses the current collecting shoe 8 against the power feeding train line 9, so that the current collecting shoe 8 can be pressed against the unevenness of the power feeding train line 9. Tracking of 8 is performed by two sets of rubber rings installed at intervals in the vehicle traveling direction, so that stable current collecting characteristics can be obtained.

FIG. 4 shows a structure for further reducing the weight of the final train shoe 8 ′.
Two portions of the support portion of 10 have the maximum width W ', and the other portions have a width B narrower than the width W of the power feeding train line 9 for weight reduction.

FIG. 5 shows an embodiment in which the current collecting shoe 17 is made of a material such as a sintered alloy which is relatively weak against impact. The current collecting shoe 17 is formed to be longer in the vehicle traveling direction than in the width direction. This has the same shape as the current collecting shoe 8 in FIG. 1 and has a structure in which it is fixed with bolts 19 on a shoe support 18 having an extremely thin plate thickness to improve impact resistance.

The same effects as those of the above-described embodiment can be obtained by the embodiments shown in FIGS. 4 and 5 described above.

As described above, according to the embodiment of the present invention, the following effects can be obtained.

The current collecting shoe is formed of a flat plate material whose plate surface slides on the power feeding train line, and the maximum width of the plate surface of the flat plate material sliding on the power feeding train line is larger than the width of the power feeding train line. Since it is formed to be wide and the length along the vehicle traveling direction is longer than the maximum width of the plate surface, some part of the current collecting shoe must be in contact with irregularities in the traveling direction of the power feeding train line. As a result, it is possible to obtain a current collector in which the electrical disconnection phenomenon is prevented.

Furthermore, since the current collecting shoe is made of a thin plate of flat plate material,
The sprung weight can be lightened, and the rubber arranged on the support portion that supports two points in the longitudinal direction of the current collecting shoe acts in the compression direction when the current collecting shoe is pressed against the power supply train line. Therefore, since there is no problem such as rubber cracks and the spring constant can be freely selected, the spring constant can be made suitable for following the power supply train line. At the same time, since the rubber is hollow and the support rod 10 is loosely fitted, it has a cushioning ability in the traveling direction of the vehicle. as a result,
By reducing the weight, selecting an appropriate spring constant, and buffering ability, it is possible to easily incline the current collecting shoe with respect to the unevenness in the traveling direction of the power feeding train line 9 to improve the followability, and to prevent the above disconnection phenomenon. It can be efficiently prevented.

In addition, since the shoe support plate 7 that supports the current collecting shoe 8 is formed in parallel with the traveling direction of the vehicle, the current collecting shoe 8 is inclined by the sliding resistance between the current collecting shoe 8 and the power feeding train line 9. Since no force is generated, the disconnection phenomenon of the current collecting shoe 8 can be prevented.

〔The invention's effect〕

According to the present invention, it is possible to obtain a current collecting device for an electric vehicle that can prevent a disconnection phenomenon of a current collecting shoe with respect to a power feeding train line that is unevenly worn in a traveling direction.

[Brief description of drawings]

FIG. 1 is a partial side view showing an embodiment of a current collecting shoe of a current collecting device for an electric vehicle according to the present invention, and FIG. 2 is a front view showing an embodiment of a current collecting device for an electric vehicle according to the present invention. FIG. 3, FIG. 3 is a plan view of FIG. 1, FIG. 4 is a view corresponding to FIG. 3 showing another embodiment of the current collecting shoe of the current collector of the electric vehicle according to the present invention, and FIG. 5 is according to the present invention. It is a figure equivalent to Drawing 1 showing other examples of a current collection shoe of a current collector of an electric car. 1 ... Bogie (car body), 6 ... tension spring, 8,8 ', 17 ... collector shoe, 9 ... power supply trolley wire.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuyoshi Ohashi 2-4-12 Hamamatsucho, Minato-ku, Tokyo Tokyo Monorail Co., Ltd. (72) Inventor Naruo Ide 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture No. 1 in Hitachi Cable Co., Ltd. Hidaka Factory (56) References Japanese Patent Laid-Open No. 51-47705 (JP, A) Actual No. 50-128808 (JP, U)

Claims (1)

[Claims] 1. An electric vehicle in which a current collecting shoe (8, 8 ', 17) provided on a vehicle body (1) is pressed and slid against a power supply train line (9) arranged on the ground side. In the current collector, the current collecting shoes (8, 8 ′, 17) are formed of a flat plate material whose plate surface slides on the power feeding train line (9), and the flat plate material is used for the power feeding train line. The maximum width (W ') of the plate surface sliding with (9) is formed to be wider than the width (W) of the power feeding train line (9),
In addition, the length along the vehicle traveling direction is formed to be longer than the maximum width (W ') of the plate surface, and a space is provided at two positions in the longitudinal direction of the current collecting shoes (8, 8', 17). Elastic bodies (12, 14) are provided, and a space between these elastic bodies (12, 14) is supported by a shoe support member (7) parallel to the vehicle traveling direction. Further, the shoe support member (7) is suspended by a suspension member (7). 3, 4) and the suspension members (3, 4) are pivotally supported on the vehicle body (1), and the current collecting shoes (8, 8 ', 17) are attached to the suspension members (3, 4). A power collection device for an electric vehicle, comprising means (6) for pressing the power supply train line (9).