JP2009173145A - Heat-dissipating electric train line device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric train line device for preventing cut-off of a trolley line by heat of arc at an air-section point of a catenary-suspension electric train line. <P>SOLUTION: A heat-dissipating rigid body 2 of high heat conductivity is provided so as to contact along a predetermined length part of an upper part of a trolley line T in an air-section point S of a catenary-suspension electric train line. At least both end parts of the trolley line T of the heat-dissipating rigid body 2 in the axial direction is fixed to the trolley line T by a fixing means 3. Thereby, a heat-dissipating electric train line device 1 is configured so that the heat-dissipating rigid body 2 bears a tensional force on the trolley line T. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a heat dissipating train line device applied to an air section portion for air-insulating two power transmission sections connected to different power sources in a catenary suspension train line facility of an electric railway. The present invention relates to a train line device that is provided along a trolley line at a section portion and efficiently radiates heat generated in the trolley line by an arc generated between the pantograph and prevents the trolley line from fusing.

In an electric railway train line facility, there is provided a device for electrically insulating and dividing a power transmission section connected to a different power source. As one of the sorting devices in the catenary train line, as shown in FIG. 11, there is a device S called an air section having a structure in which different power source sections are air-insulated. Two trolley wires T1 and T2 connected to different power sources on one track R are installed on the air section so as to overlap each other with an insulation interval. The air section is widely used in electric railways regardless of whether it is direct current or alternating current because the pantograph can pass at high speed and has the advantage of being able to collect current continuously when passing.
However, since the air section location is a location that separates different power sources, a potential difference may occur between the two trolley wires T1 and T2. Train C stops at an air section where there is a potential difference between trolley lines T1 and T2, and as shown in FIG. 12, pantograph PC is in contact with one trolley line T1 and is disconnected from the other trolley line T2. In this case, an arc is generated between the separated pantograph PC and the trolley line T2, and the trolley line T2 is softened by the heat of the arc. In the catenary suspension train line, tension is applied to the trolley wire, so that the tensile strength of the trolley wire T2 is reduced due to softening, and an event of breaking the wire without being able to withstand the tension occurs.
So far, measures have been taken to prevent the train from stopping at the air section in order to prevent disconnection of the trolley wire at the air section. However, no fundamental measures have been taken to avoid disconnection even when the train is stopped at the air section while using the existing catenary train line structure.
On the other hand, an overhead line structure called a catenary rigid train line is known (for example, see Patent Document 1). The catenary-type rigid train line described in Patent Document 1 is formed by suspending a cylindrical rigid train line having an axial cut that sandwiches the trolley line at the lower part from an upper suspension line via a hanger bar. It is.
The normal rigid train line system adopted in the subway, etc., places the rigid train line along the trolley line and supports it from above at relatively short intervals, and does not apply tension to the trolley line or rigid train line. . On the other hand, in the catenary type rigid railway line, tension is applied to the trolley line. As a result, the distance between the support points for supporting the weight of the rigid train line can be made relatively large. None of the rigid train line systems considers the heating of the trolley line and the prevention of breakage.
Japanese Patent Laid-Open No. 9-277855

  An object of the present invention is to provide a train line device for preventing breakage of a trolley line due to heat of an arc in an air section portion of a catenary suspension train line. The present invention applies a heat dissipating train line device to an air section portion of an existing catenary suspension train line, so that when an arc is generated when the train stops at the air section portion, heat generated by the arc is efficiently generated. When the trolley wire is softened, the tension applied to the trolley wire is transferred to a rigid body, thereby avoiding the tensile failure of the trolley wire due to the tension. Furthermore, this invention makes it possible to apply the heat-dissipating train line device to the air section portion of the existing overhead line only by minor modification of peripheral equipment.

  In order to solve the above-mentioned problems, in the invention according to this application, the heat radiation having high thermal conductivity so as to come into contact with a portion of a predetermined length above the trolley line T in the air section portion S of the catenary suspension train line. The rigid body 2 is provided, and at least both axial ends of the radiating rigid body 2 in the axial direction of the trolley wire T are fixed to the trolley wire T by the fixing means 3, so that the radiating rigid body 2 can bear the tension applied to the trolley wire T. Thus, the heat dissipating train wire device 1 was configured.

According to the apparatus of the invention related to this application, when an arc is generated between the trolley wire T and the pantograph when the train stops at the air section portion S, the heat associated therewith is conducted to the heat dissipating rigid body 2. Efficiently dissipates, reduces the softening of the trolley wire T due to heat, and when the trolley wire T is softened, the tension applied to the trolley wire T is transferred to the heat dissipating rigid body 2, thereby Tensile fracture can be avoided, and it can be applied to the air section portion S of the existing overhead wire only by minor modification of the peripheral equipment.
Although the present invention has been described with reference to the reference numerals in the accompanying drawings, the present invention is not limited to this.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a schematic front view of an air section portion equipped with a heat radiating train line device, and FIG. 1B is a heat radiating train wire device in which two trolley wires at the air section portion are shifted up and down. FIG. 2 is a front view in which a part of the radiating train line device is omitted, FIG. 3 is a perspective view in which a part of an interconnection portion of the radiating rigid body is cut, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a perspective view of the connecting portion between the heat radiating rigid body and the stress relaxation member, FIG. 6 is an exploded perspective view of the connecting portion between the heat radiating rigid body and the stress relaxing member, FIG. 7 is a front view of the retaining metal fitting, and FIG. FIG. 9 is a side view of the metal fitting, FIG. 9 is a plan view of the retaining metal fitting, and FIG. 10 is a side view showing the suspended state of the radiating train wire device.

  1 and 2, a heat dissipating train wire device 1 includes a heat dissipating rigid body 2 provided on trolley wires T1 and T2 in an air section portion S of a catenary suspension train line, and the heat dissipating rigid body 2 is connected to the trolley wires T1 and T2. And fixing means 3 for fixing to the head. The heat radiating rigid body 2 is made of a metal such as an aluminum alloy having a high thermal conductivity and a required tensile strength, and is provided so as to be in contact with a predetermined length portion above the trolley wires T1 and T2. The fixing means 3 fixes both ends of the trolley wires T1 and T2 in the axial direction of the radiating rigid body 2 to the trolley wires T1 and T2, so that the radiating rigid body 2 can bear the tension applied to the trolley wires T1 and T2. .

  In the heat dissipating train line apparatus 1 attached to the trolley line T1, the right side of the figure is the train entrance side, and in the heat dissipating train line apparatus 1 attached to the trolley line T2, the left side of the figure is the train entrance side. For example, in the trolley line T1 shown in FIG. 1B, when the train travels to the left as indicated by the arrow, the pantograph enters the heat dissipating train line device 1 from the right end side and passes through the air section part S. , Away from the trolley line T1 pulled upward. The reverse is true for the trolley line T2. In the drawing, the pulling angle of the trolley line is exaggerated. Moreover, FIG. 1 does not represent the actual shape of each member. As shown in FIG. 2, the heat radiating rigid body 2 is substantially linear in a normal state, but in the installed state, the heat radiating rigid body 2 bends together with the trolley wire T1 on one end side.

  A stress relaxation member 4 is connected to the end of the heat radiating rigid body 2 on the train entrance side via a fixing means 3. As a result of the weight per unit length being significantly different between where the heat dissipating rigid body 2 is attached and where it is not attached to the trolley wires T1 and T2, the pantograph is subject to excessive mechanical shock when passing near the boundary between the two locations. Become. The stress relaxation member 4 relaxes the impact on the pantograph by gently changing the weight of the trolley wires T1 and T2 per unit length in the vicinity of the boundary between the two locations, thereby sliding the trolley wires T1 and T2. Smooth.

  The heat radiating rigid body 2 is suspended from the suspension lines M1 and M2 by the hangers 5 together with the trolley wires T1 and T2 at the required locations. Thereby, the height of the heat radiating rigid body 2 is adjusted. Further, as shown in FIG. 1, the heat dissipating rigid body 2 is supported on the support column P by a curved metal fitting 6 at a required location, and a required horizontal displacement is given.

  In FIG. 4, the heat radiating rigid body 2 is formed of a substantially cylindrical tubular body, and this shape has uniform wind pressure characteristics and can suppress wind pressure displacement. The heat radiating rigid body 2 has an axial cut 7 that grips the trolley wire T at the bottom, and has a structure that becomes thick near the cut 7. By this thick portion, the arc heat from the trolley wire T can be absorbed as much as possible. An inner space 8 is formed between the heat radiating rigid body 2 and the upper portion of the trolley wire T. With this structure, the weight can be reduced and the surface area of the heat dissipating rigid body 2 can be increased to increase the heat dissipating efficiency.

  The heat radiating rigid body 2 includes a plurality of divided bodies 9 divided in the axial direction of the trolley wire, and adjacent divided bodies are coupled to each other by a pair of external connection fittings 10. Each divided body 9 is suspended from the suspension line M by the hanger 5 (FIGS. 2 and 10). The external connection fitting 10 has an abutting surface 11 having a circular arc cross section that is in close contact with the outer surface of the end portion of the divided body 9, thereby ensuring the vertical rigidity of the radiating rigid body 2. The connection fitting 10 is fixed to the division body 9 by a bolt 12 that penetrates the connection fitting 10 and the division body 9 in the direction orthogonal to the axis of the trolley wire T.

  Each divided body 9 constituting the heat radiating rigid body 2 is composed of a pair of halves 13 that are further divided into two in the direction perpendicular to the axis, tightened by bolts 30 that penetrate the pair in the direction perpendicular to the axis, and between the lower edges of each other. The trolley wire T is gripped by the cut line 7 to be formed.

  In FIG. 6, the fixing means 3 for fixing the radiating rigid body 2 to the trolley wire T includes a retaining metal 14 and a connecting metal 15.

  5 and 6, the retaining metal fitting 14 has one end on the heat radiating rigid body 2 side and the other end on the opposite side, and is connected to the heat radiating rigid body 2 through the connection metal fitting 15 at the connection portion 16 on the one end side. The connecting portion 17 on the side is connected to the stress relaxation member 4. The intermediate fixing portion 18 is fixed to the trolley wire T by a fixing bolt 19 penetrating in the vertical direction. 6 to 8, the retaining metal fitting 14 includes a pair of left and right component pieces 20. A gripping portion 21 that grips the trolley wire T between them is provided at the lower edge in the middle of the component piece 20. The component piece 20 is fastened by a bolt 31 penetrating in the direction orthogonal to the axis, and the trolley wire T is fastened by the grip portion 21. In addition, each of the component pieces 20 is provided with a bolt insertion portion 22 into which the fixing bolt 19 is screwed. The fixing bolt 19 penetrates the bolt insertion part 22 in the vertical direction, and the tip is pressed against the upper surface of the trolley wire T.

  The connection fitting 15 has a quadrangular prism shape, has a fitting portion 23 on one end side and a connection portion 24 on the other end side, and is disposed on the trolley wire T. The fitting portion 23 is fitted into the inner space 8 formed between the heat radiating rigid body 2 and the trolley wire T at the end of the heat radiating rigid body 2, and is connected to the heat radiating rigid body 2 by a bolt 25. The connecting portion 24 is connected to the retainer 14 by a bolt 26 that penetrates the connecting portion 24 and the connecting portion 16 of the retainer 14.

  As shown in FIGS. 2, 5, and 6, the stress relaxation member 4 is continuously fixed on the trolley line T to one fixing means 3 provided on the approach side of the train in the heat radiation train line device 1. The stress relaxation member 4 is connected to the connection portion 17 of the retaining metal fitting 14 by a bolt 28 at the connection portion 27 on one end side, and extends in the axial direction along the upper surface of the trolley wire T by a predetermined length. The stress relaxation member 4 is set so that the weight per unit length of the trolley wire T is gradually and gradually changed from the train entrance side to the heat radiating rigid body 2 side. Fixed to the line T.

  When a train stops at an air section location S having a potential difference between the trolley wires T1 and T2, and an arc is generated between the pantograph and the trolley wires T1 and T2, and the trolley wires T1 and T2 are heated. The heat dissipation rigid body 2 absorbs this heat and dissipates it efficiently, thereby reducing the softening of the trolley wires T1 and T2 due to the heat. When the trolley wires T1 and T2 are softened, the radiating rigid body 2 is burdened with the tension applied to the trolley wires T1 and T2, so that the tensile failure of the trolley wires T1 and T2 due to the tension can be avoided. The heat dissipating train line device 1 can be applied to the air section portion of the existing overhead wire relatively easily only by making minor modifications to the peripheral equipment.

(A) is a schematic front view of an air section part equipped with a heat dissipating train line device, and (b) is a schematic front view of a heat dissipating train line device in a state where two trolley wires in the air section part are shifted up and down. FIG. It is the front view which abbreviate | omitted a part of heat radiation train wire apparatus. It is the perspective view which cut | disconnected a part of interconnection part of a thermal radiation rigid body. It is IV-IV sectional drawing in FIG. It is a perspective view of the connection part of a thermal radiation rigid body and a stress relaxation member. It is a disassembled perspective view of the connection part of a thermal radiation rigid body and a stress relaxation member. It is a front view of a retaining metal fitting. It is a side view of a retaining metal fitting. It is a top view of a retaining metal fitting. It is a side view which shows the suspended state of a thermal radiation wire apparatus. It is explanatory drawing of the conventional air section location. It is explanatory drawing of the conventional air section location.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat radiation line apparatus 2 Heat radiation rigid body 3 Fixing means 4 Stress relaxation member 5 Hanger 6 Curved fitting 7 Cut 8 Inner space 9 Divided body 10 External connection metal fitting 11 Contact surface 12 Bolt 13 Half-divided body 14 Retaining metal 15 Connection metal fitting 16 connecting portion 17 connecting portion 18 fixing portion 19 fixing bolt 20 component piece 21 gripping portion 22 bolt insertion portion 23 fitting portion 24 connecting portion 25 bolt 26 bolt 27 connecting portion 28 bolt 29 gripping member 30 bolt 31 bolt M1, M2 suspension cable S Air section location T, T1, T2 Trolley wire

Claims (8)

A heat dissipating rigid body with high thermal conductivity that is arranged so as to be in contact with a predetermined length of the upper portion of the trolley line in the air section of the catenary suspension train line, and that diffuses heat applied to the trolley line when an arc is generated,
Fixing means for fixing the heat dissipation rigid body to the trolley wire at both ends in the axial direction of at least the trolley wire of the heat dissipation rigid body, thereby enabling the heat dissipation rigid body to bear the tension applied to the trolley wire. A heat dissipating train line device.   The said heat radiating rigid body consists of a cylindrical body which equips the lower part with the score of the axial direction holding the said trolley line, and forms inner space between the upper part of the said trolley line. Radiation train line device. The fixing means includes a retaining metal member disposed along an upper portion of the trolley wire,
The retaining metal fitting has one end on the heat dissipating rigid body side and the other end on the opposite side, is connected to the heat dissipating rigid body at a connection portion on one end side, and is fixed to the trolley wire at a fixing portion on the other end side. The heat-dissipating train wire device according to claim 1 or 2. The fixing means further comprises a connection fitting interposed between the retaining metal fitting and the heat radiating rigid body,
The connection fitting has a fitting portion that fits into the inner space formed between the heat dissipation rigid body and the trolley wire at an end of the heat dissipation rigid body, and is disposed on the trolley wire. Connected to the heat-dissipating rigid body by a bolt that penetrates the fitting part and the heat-dissipating rigid body, and has a connecting part that is connected to the retaining metal fitting on the other end side. The heat dissipating train wire device according to claim 3, wherein the heat dissipating train wire device is connected.   The retaining bracket is composed of a pair of constituent pieces that are fastened with bolts to each other, and has a gripping portion that grips the trolley wire between the lower edges, and penetrates the pair of constituent pieces in the vertical direction to the tip. The heat-dissipating train wire device according to claim 3 or 4, wherein the heat-dissipating train wire device is fixed to the trolley wire by a fixing bolt pressed against the upper surface of the trolley wire.   The heat-dissipating rigid body is composed of a plurality of divided bodies divided in the axial direction of the trolley wire, and the adjacent connecting bodies that are adjacent to each other on the opposite outer side surfaces of the end portions and the external connecting metal fittings The heat-dissipating train wire device according to claim 2, wherein the rail and the divided body are connected to each other by a bolt penetrating in a direction perpendicular to the axis of the trolley wire.   The heat dissipating rigid body is formed of a halved body that is divided into two in the direction perpendicular to the axis, and is fastened so as to grip the trolley wire between the lower edges of each other by a bolt that penetrates in the direction perpendicular to the axis. Item 3. The heat dissipating train wire device according to Item 2. A stress relieving member fixed on the trolley wire so as to extend a predetermined length in the axial direction of the trolley wire continuously to one of the fixing means provided on the train entrance side in the heat radiating rigid body,
The weight of the stress relaxation member is set so that the weight per unit length of the trolley wire is changed gradually and gradually from the entrance side of the train toward the radiating rigid body side. Item 2. The heat dissipating train wire device according to Item 1.

Images