JP6973748B2 - pantograph - Google Patents

Description

The present invention relates to a pantograph.

As described in Patent Document 1, in a mobile machine of a coke oven in the steel industry, a trolley wire is arranged and electrified. Since the trolley wire is fixed to the furnace body, the positions of the pantograph and the trolley wire change due to changes in the trolley wire and rail due to the expansion of the furnace body. For this reason, the pantograph is off the trolley line several times a year. If the pantograph deviates from the trolley line while driving, the insulator that supports the trolley line will be destroyed extensively. Restoration of insulators and adjustment of the position of the pantograph take time, which leads to a significant reduction in the production of coke ovens, so there is a demand for pantographs that are difficult to derail.

Japanese Unexamined Patent Publication No. 2017-013761

By the way, the size of the pantograph trolley shoe can only be manufactured up to 200 mm due to the restrictions of the furnace to be manufactured. Therefore, in the direction of increasing the size of the trolley shoe itself, it is not possible to prevent the pantograph from coming off the trolley line. In addition, measures such as increasing the number of trolley shoes and expanding the contact width with the trolley wire increase the risk of poor contact at the joint. Therefore, it is not possible to easily increase the number of tram shoes. It should be noted that such a problem is not a problem that occurs only in the field of mobile equipment in the steel industry, but is a problem that can be applied in the field of using vehicles, railways, etc. that receive power via a trolley line or the like. As a result of diligent studies by the inventors in terms of weight and installation space, the contactable width of the trolley wire and the pantograph does not simply increase the number, but increases the apparent width, that is, meandering. I realized that it would be good if I could follow the trolley wire that I was using, and I came up with the idea that the shoe holder should be a pantograph with a movable structure that has good followability and is difficult to derail.

The present invention is an invention made in this way, and an object of the present invention is to prevent the pantograph from coming off the trolley line.

In order to solve the above problems, a pantograph having a trolley shoe on a current collector plate that can be moved in the vertical direction, provided with brims along the trolley wire wiring direction on both sides of the trolley shoe, via the brim. The pantograph is characterized in that the trolley shoe can move in the horizontal direction perpendicular to the trolley wire wiring direction due to the load received from the trolley wire.

Further, the trolley shoe is provided with a spring portion that elastically deforms to restore the original position when the trolley shoe is moved in the horizontal direction perpendicular to the trolley wire wiring direction. Is preferable.

Further, the trolley shoe is provided with a spring portion that elastically deforms when moved to one side in the horizontal direction and a spring portion that elastically deforms when moved to the other side. It is preferable to do so.

Further, it is preferable that it is used for a relatively small pantograph such as a coke moving machine in the steel industry.

By using the present invention, it is possible to prevent the pantograph from deviating from the trolley line.

It is a side view of the pantograph of an embodiment. It is a top view of the pantograph of an embodiment. It is a figure which showed the connection structure of the part of the pantograph of an embodiment seen from the III-III side of FIG. It is a figure which compared the conventional example and the Example.

Hereinafter, embodiments of the invention will be described. The pantograph 1 in the present embodiment is provided with a trolley shoe 3 on a current collector plate 2 movable in the vertical direction, and is provided with brims 4 along the trolley wire wiring direction on both sides of the trolley shoe 3. In this pantograph 1, the trolley shoe 3 can move in the horizontal direction perpendicular to the trolley wire wiring direction due to the load received from the trolley wire 10 via the brim 4. Therefore, it is possible to prevent the pantograph 1 from coming off the trolley wire 10.

An embodiment will be described by taking a coke moving machine as an example. A schematic side view and a plan view of the pantograph 1 are shown in FIGS. 1 and 2. Further, in FIG. 3, the structure around the trolley shoe 3 is shown. The coke moving machine of the present embodiment travels on a rail mounted substantially linearly on the ground. Further, the trolley wire 10 for feeding is fixed to the furnace body of the coke oven.

In the embodiment, when the trolley shoe 3 moves in the horizontal direction perpendicular to the trolley wire wiring direction, the trolley shoe 3 is provided with a spring portion 5 that elastically deforms and tries to return to the original position. When the load applied to the brim 4 from the trolley wire 10 increases, the spring portion 5 pushes the brim 4 following the meandering of the trolley wire 10, the spring portion 5 extends in the moving direction, and current is collected. The plate 2 and the trolley shoe 3 move integrally to secure power supply. When the load is reduced, the spring portion 5 contracts to try to return the trolley shoe 3 to its original position. Further, the spring portion 5 has a spring portion 5 that elastically deforms in that direction when the trolley shoe 3 moves to one side in the horizontal direction as shown in FIG. 3, and a spring portion 5 that elastically deforms in that direction when the trolley shoe 3 moves to the other side. It is equipped with a spring portion 5 that stretches and elastically deforms, and even if the trolley shoe 3 moves to either side, it tries to return the trolley shoe 3 to its original position when the load applied from the trolley wire 10 is reduced. do. Therefore, since the trolley shoe 3 returns to the original position except for the sharp meandering portion of the trolley wire 10, the risk of collision with the surrounding structure is reduced.

Here, the pantograph 1 will be described more specifically. The pantograph 1 of the embodiment includes a gantry 6 fixed to a mobile machine. A rotatable arm 7 is attached to the gantry 6, and one end of the arm 7 and the gantry 6 are connected by a tension spring 8. The tension spring 8 pulls the arm 7 so that the other end side of the arm 7 is positioned on the upper side. A current collector plate 2 is connected to the other end side of the arm 7, and a trolley shoe 3 is provided on the current collector plate 2. The current collector plate 2 and the trolley shoe 3 move integrally. Therefore, the trolley shoe 3 comes into contact with the trolley wire 10 from the lower side of the trolley wire 10.

The pantograph 1 is provided with the brim 4 on both sides of the trolley shoe 3. The pantograph 1 is configured so that the trolley shoe 3 can move in the horizontal direction by a load received from the trolley wire 10 via the brim 4. Specifically, the shaft member 11 connected to the current collector plate 2 is slidably fitted to the bush 12 fixed to the arm 7 side. A coil spring is attached so as to wrap around the outer periphery of the shaft member 11, and functions as a spring portion 5 that elastically deforms when the trolley shoe 3 moves in the horizontal direction. In the embodiment, a coil spring that elastically deforms when the trolley shoe 3 moves to one side in the horizontal direction and an elastically deformable coil spring that expands in that direction when the trolley shoe 3 moves to the other side are separately provided. The bush 12 is located between each coil spring.

Here, the relationship between the movement of the trolley wire 10 and the trolley shoe 3 will be described. When the trolley wire 10 is meandering, first secure an electrical connection within the width of the trolley shoe 3. When the trolley wire 10 is in a meandering state exceeding the width of the trolley shoe 3, the trolley wire 10 is caught by the brim 4 arranged at the end of the trolley shoe 3 as described above, while ensuring an electrical connection. The trolley shoe 3 slides together with the current collector plate 2 in which the trolley shoe 3 is arranged.

Next, a conventional example and an embodiment will be compared and described. As shown in FIG. 4, in both the conventional example and the embodiment, the trolley shoe moves in the vertical direction in the same direction, and the trolley shoe abuts from the lower side of the trolley wire. On the other hand, in the conventional example, the pantograph has no brim and the trolley shoe does not move in the horizontal direction. Therefore, in the conventional pantograph, when the meandering of the trolley line is large, the pantograph may deviate from the trolley line. On the other hand, in the pantograph 1 of the embodiment, the brim 4 is provided and the trolley shoe 3 can be moved in the horizontal direction. Therefore, when the meandering of the trolley wire 10 is large, the trolley wire 10 hits the brim 4 and moves so that the trolley shoe 3 is pushed. Therefore, it was suppressed that the pantograph 1 deviated from the trolley wire 10.

Although one embodiment has been described above, the present invention is not limited to the above embodiment and can be various modes. For example, the shaft member fixed to the current collector plate side is not slidable with respect to the bush fixed to the arm side, but is fixed to the current collector plate side with respect to the shaft member fixed to the arm side. The bush may be slidable.

Structures such as pedestals and arms can be in various forms.

The pantograph of the present invention may be applied to a field such as a vehicle or a railroad that receives power via a trolley line or the like, in addition to the coke mobile device in the steel industry.

1 Pantograph 2 Current collector plate 3 Tram shoe 4 Brim 5 Spring part 10 Tram wire

Claims (3)

A pantograph with a trolley shoe on a current collector that can move up and down.
The current collector plate and trolley shoe have a structure that moves integrally,
Both sides of the trolley shoe are provided with brims along the trolley wire wiring direction.
Wherein Ri movable der perpendicular horizontal direction the trolley shoe with respect to the trolley line wiring direction by the load received from the trolley wire via the flange,
The trolley shoe is separately provided with a spring portion that elastically deforms when it moves to one side in the horizontal direction and a spring portion that elastically deforms that expands in that direction when it moves to the other side. Ori,
The separate spring unit, if one extends shrinkage while contracts push one if the other is extended - pantograph characterized that you have a configuration having a pull function. The first aspect of claim 1, wherein the trolley shoe is provided with a spring portion that elastically deforms to restore the original position when the trolley shoe is moved in the horizontal direction perpendicular to the trolley wire wiring direction. pantograph. The pantograph according to claim 1 or 2 , which is used in a coke moving machine.

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