JPH09183321A - Wear resistant structure for electric railcar line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce electrical wear on the abrasive face of an electric railcar line due to the separation of a collector or generation of arc by forming a metal abrasive face made from a more soft and higher conductive metal than the electric railcar line on the abrasive face of the rigid extended electric railcar line with conductive steel rails. SOLUTION: A metal 2 is more soft and higher conductive than a rigid extended electric railcar line 1, such as aluminum, nickel and zinc and aluminum alloy, which is formed on the abrasive face 1A of the electric railcar line 1 to form a metal abrasive face 2A where an abrasive plate for a pantagraph 3 slides. If the metal 2 is made of zinc and aluminum alloy, the metal abrasive face 2A is formed by hot dipping. The thickness of the metal abrasive face 2A is set to be 40-60 microns in consideration of the roughness of the abrasive face 1A. The formation of the metal abrasive face 2A is a more inexpensive way than the complete removal of the small roughness of the abrasive face 1A. A siderail system with conductive steel rails is practicable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear resistant structure for a train line.

[0002]

2. Description of the Related Art In an electric railway, when electric power is supplied from a rigid suspension type or a third rail type electric line using a conductive steel rail to an electric car, a current collector of the electric car slides on the electric line. It is done by In the current collector sliding device composed of the power line and the current collector of the electric car,
Mechanical wear due to direct metal contact, and electrical wear due to arcing due to disconnection of the current collector or increase in electrical contact resistance due to minute irregularities on the contact surface of the contact line or current collector As a result, the ground surface is worn. However, in this current collecting slide device, no measures have been taken to reduce the electrical wear of the sliding surface.

[0003]

SUMMARY OF THE INVENTION In order to reduce the electrical wear of the contact surface of the electric power line due to the disconnection of the current collector and the occurrence of arc, it is necessary to remove minute irregularities on the electric contact surface of the electric power line. It's good, but to completely remove the unevenness is
Due to the construction cost, it cannot be adopted.

The present invention has been made for the purpose of solving such problems of the prior art.

[0005]

Means for solving the above problems will be described below with reference to FIG. 1 corresponding to one embodiment.
explain. According to the present invention, a metal contact surface 2A of a metal 2 having a higher conductivity than the contact wire 1 is formed on the contact surface 1A of a rigid suspension type electric contact wire 1 using conductive steel rails.

In the device thus constructed, the current collecting device 3 of the electric vehicle is in a good current collecting state in the process of slidingly collecting the metal sliding surface 2A which is soft and has high conductivity. Is polished, and while the conductivity of the metal 2 is maintained as the polishing progresses, at the same time, the fine irregularities on the ground surface 1A of the train line 1 are made smooth. Along with this, the disconnection of the current collector 3 and the occurrence of arc are reduced.

[0007]

FIG. 1 is a diagram showing an embodiment of the present invention. In FIG. 1, 1 is a rigid suspension type electric power line using conductive steel rails, 2 is a metal, and 3 is a current collector of an electric car, that is, a pantograph (a pantograph boat is shown).

The metal 2 is softer than the trolley wire 1, and
It is a metal having a high conductivity, for example, an alloy of aluminum, nickel, zinc and aluminum. Rail surface 1A 1A
The metal 2 is formed on the surface of the pantograph 3 to form the metal sliding surface 2A on which the sliding plate of the pantograph 3 slides. When the metal 2 is an alloy of zinc and aluminum, the metal ground surface 2A is formed by hot dip plating. In this case, the hot-dip of the hot-dip galvanized metal surface 2A is lightly polished and removed. Metal surface 2
The thickness of A is 40 to 60 in consideration of the unevenness of the rubbing surface 1A.
It is set to micron. It should be noted that the formation of the metal sliding surface 2A is more difficult than the complete removal of minute irregularities on the sliding surface 1A.
It is cheap.

FIG. 2 shows a state where a disconnection occurs in a constant measuring section (10 meters) when a current collecting sliding device is constituted by a conductive steel rail and a pantograph and sliding while collecting a current of 300 amperes. As is clear from the figure, when the conductive steel rail is a base material, there are many occurrences of wire breakage, but when the present invention is implemented, the occurrence of wire breakage is small.

The above has described the rigid suspension type electric line 1 using conductive steel rails.
The present invention is not limited to this, and a third rail type using a conductive steel rail may be used.

[0011]

As described above, the present invention provides:
In this case, a metal contact surface of a metal which is softer and has higher conductivity than the contact wire is formed on the contact surface of a rigid suspension type electric contact wire using conductive steel rails. Therefore, the current collector of an electric car is a soft and highly conductive metal sliding surface, and in the process of collecting current, grinds it in a good current collecting state, and the conductivity of the metal is increased in the progress of polishing. While maintaining the above, at the same time smooth the minute irregularities on the contact surface of the train line. Therefore, according to the present invention, it is possible to obtain the effect of reducing electrical wear caused by minute irregularities on the sliding surface of the train line.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of the present invention.

FIG. 2 is a diagram showing a state of occurrence of disconnection, in which (A) is a case where the conductive steel rail is a base material, and (B) is a case where the present invention is carried out.

[Explanation of symbols]

 1 Rigid suspension line using conductive steel rail 2 Metal 2A Metal sliding surface 3A Electric vehicle current collector

Claims (3)

[Claims] 1. A wear-resistant structure for a railway line in which a metal rail surface that is softer than the railway line and has a high electrical conductivity is formed on the surface of a rigid suspension type railway line that uses conductive steel rails. 2. A wear-resistant structure for a train line in which a sliding surface of a third rail is formed with a sliding surface of a metal that is softer than the third rail and has high conductivity. 3. The wear resistant structure for an electric power line according to claim 1 or 2, wherein the metal is an alloy of zinc and aluminum.