KR20170058766A - double-tension rigid bar and connecting structure of the same - Google Patents

Abstract

A rigid catenary and its connection structure are disclosed. According to the present invention, it is possible to secure a sufficient gripping force for a catenary line and to minimize the stress and deformation applied to a rigid line, thereby improving the current collecting performance.
In addition, it is possible to secure the safety and reliability of railway operation by the influence of pressure and lift from the pantograph as the speed of electric railway is increased. Also, by improving the sectional shape of the rigid catenary cable, structural stability can be achieved, have.
Also, it is possible to improve the productivity by aligning the connection part of the solid body line easily and precisely, and to prevent the deformation due to the self weight of the solid body line, it is possible to secure stability and reliability even when applied to the high speed railway. Sectional area can be sufficiently secured and the contact surface between the rigid body line and the connecting plate can be prevented from being reduced.

Description

A double-tension rigid bar and a connecting structure of the same,

The present invention relates to a rigid wire and its connection structure, and more particularly, to a rigid wire and a connection structure thereof, which can secure a sufficient gripping force for a catenary wire and can easily and accurately align the connection portion, The present invention relates to a rigid electric cable and its connection structure that can secure stability and reliability even when applied to a high-speed railway.

In general, electric railway is used by many people because of its advantages of quick, accurate and stable compared with other transportation methods. Moreover, recently, high-speed railway is widely used, and it is attracting attention as a safe and convenient public transportation means.

Electric railway, which has been attracting attention as a new transportation means in the 21st century along with the opening of high-speed railway, has recently been required to improve the performance, reliability and safety of electric railway lines due to speeding up of electric railway,

Here, a catenary line can be defined as a line including a catenary line for supplying electric power in contact with a current collecting device of a train that runs the line, and the facilities attached thereto.

Electric power required for driving the electric vehicle is supplied to the electric cable and electric current collectors of the pantograph of the vehicle. The electric cable that supplies electric power to the electric motor is classified according to the electric power feeding method.

Specifically, the catenary line can be classified into an overhead catenary system and a third rail system, and the machined catenary line is divided into a rigid constriction system and a suspension system.

In this case, the suspension system is applied to the ground section in a manner that the line is guided by using a wire line. Since the line, the wire and the dropper line must be connected together and a peripheral device such as a tension control device is required, , It is difficult to apply it to the tunnel section because of its complexity.

That is, in order to apply the suspension bridge system to the tunnel section, the tunnel cross-sectional area must be increased so much that the construction cost is excessively increased. Also, since the installation space is narrow, daily inspection and maintenance are not easy.

The third railway type is advantageous in that it can be installed on a narrow space such as a tunnel by installing a power supply rail on the road surface or a side surface to supply electric power. However, since the power supply rail is disposed on the ground, It is dangerous and only applies to some special sections.

On the other hand, the above-mentioned rigid-body hitching system is constructed by integrating a catenary cable into a rigid body and installing it by using a separate structure such as a bracket. Thus, no tightening is required and a separate tension maintaining device is not necessary. .

In fact, the height of a rigid body line is about 90 to 120mm including a rigid body and a catenary line, and the total height of the contact between the collecting contact of the catenary line and the tunnel upper ceiling considering the support and electrical separation at low voltage (DC 750V or 1500V) Do.

Therefore, since the installation space of the rigid catenary line is small, it is possible to greatly reduce the construction cost in the new tunnel, and it is also advantageous in the maintenance work in the tunnel.

The rigid catenary is called the R-Bar by reducing the rigid bar. The rigid catenary with a cross-sectional shape similar to that of the T-bar is called a T-Bar. Although the R-Bar is superior to the T-Bar in terms of workability and current collecting performance, it is widely used. In Korea, T-bar is applied to the DC section and R-bar is applied to the AC section.

Since the rigid electric wire must serve as a conductor capable of supplying electric power to the electric vehicle, it is mainly applied to a light aluminum alloy material, and expansion and contraction occur due to changes in ambient temperature. .

In addition, it is necessary to secure a gripping force of more than a proper level so as not to loosen or twist the electric wire stranded by the rigid electric wire line. If the coupling force of the electric wire is weakened, not only the structural stability of the rigid electric wire line itself is deteriorated but also vibration or shock There is a possibility.

On the other hand, as the electric railway is accelerated to more than 200 km / h, the electric cable stranded by the rigid electric cable is subjected to the force of the pantograph gravity and the lift force, and its structural stability is determined by the sectional shape of the rigid electric cable.

Particularly, for high-speed products of 200 km / h or more, the characteristics required for the rigid wire are minimized and the rigidity is increased. To realize this, the cross-sectional shape design that minimizes the stress and deformation applied to the rigid wire is required , Which is a key issue in improving the durability of rigid body cables.

Therefore, studies have been actively made on a rigid body line which can improve durability by minimizing the stress and deformation amount applied to the rigid body line and improve the structural stability by improving the sectional shape.

On the other hand, in the case of a medium-low-speed system, a rigid electric wire may be manufactured as a unit unit with a distance of 12 m, and the unit length may be changed according to the installation condition and its length may be several meters to several tens meters. In this case, when the rigid metering line and the connection plate are not aligned with each other, deformation due to their own weight becomes large, and when the sag deformation increases, it is difficult to increase the speed of the railway vehicle There is a problem.

In order to ensure the current capacity on the connection, the cross-sectional area of the connection plate must be sufficiently secured. Proper adjustment is necessary in relation to miniaturization of the rigid wire, and the position and shape error of the groove and projection formed on the rigid wire and the connection plate Since the contact surface may be reduced, this point should also be considered.

Therefore, it is possible to secure sufficient gripping force for the electric cable, to align the connection part easily and accurately, to prevent the deflection deformation due to its own weight by reducing the stress and increasing the rigidity, The need for a rigid body line is emerging.

Embodiments of the present invention seek to secure a sufficient holding force for a catenary.

It is also intended to improve the current collecting performance by minimizing the stress and strain applied to the rigid body line and increasing the rigidity.

In addition, in order to secure the safety and reliability of the railway operation, the influence of pressure and lift from the pantograph as the speed of the electric railway increases.

Further, it is intended to improve the current collecting performance by improving the sectional shape of the rigid electric wire to attain structural stability.

Also, it is aimed to improve the productivity by aligning the connection part of the rigid body cable line easily and accurately.

In addition, it is intended to prevent the deflection deformation caused by the self weight of the rigid electric wire and to secure the stability and reliability even in the case of applying to the high speed railway.

Further, it is desirable to secure a sufficient cross-sectional area of the rigid metacentric connection plate and to prevent the contact surface between the rigid metric line and the connection plate from being reduced.

According to an aspect of the present invention, Two tension arms integrally connected to the main bar and extending downward so as to be symmetrical to each other; And two clamping arms connected to the two tension arms and extended to face each other by a predetermined distance so that a catenary cable is inserted therebetween. And the gap is formed so as to be close to each other.

The rigid wire according to the present invention may further comprise at least one upper protrusion provided on the main bar and increasing rigidity so as to reduce stress and deformation applied to the rigid wire.

The rigid wire according to the present invention may further comprise at least one protrusion protruding from the inside of the tension arm.

According to another aspect of the present invention, there is provided a portable terminal comprising: a main bar; two tension arms integrally connected to the main bar and extending downward so as to be symmetrical to each other; A first connecting plate provided on the inner side of the tension arm; and a second connecting plate provided on the inner side of the tension arm, wherein the first connecting plate is disposed inside the tension arm; A second connection plate provided outside the tension arm; And at least one protrusion protruding from the inside of the tension arm and aligning the first connection plate at a predetermined position.

The rigid wire connection structure according to the present invention may further include an insertion groove formed in the first connection plate to correspond to the protrusion.

The projection may protrude so as to have a smooth curved section, and the insertion groove may have a triangular section.

The maximum thickness D1 of the second connection plate may be less than 1/2 of the distance D2 from the end of the main bar to the tension arm closest to the end of the main bar.

The two tension arms may be inclined so that the distance between the two tension arms approaches each other.

Embodiments of the present invention can secure a sufficient holding force for a catenary.

In addition, the current collecting performance can be improved by minimizing the stress and deformation amount applied to the rigid body line and increasing the rigidity.

In addition, safety and reliability of railway operation can be ensured by the influence of pressure and lift from pantograph as the speed of electric railway increases.

In addition, it is possible to improve the current collector performance by improving the sectional shape of the rigid electric wire to achieve the structural stability.

In addition, it is possible to improve the productivity by aligning the connection part of the rigid body cable line easily and accurately.

In addition, it is possible to prevent the sag deformation caused by the self weight of the rigid electric wire and to ensure stability and reliability even when applied to high-speed railway.

Further, it is possible to sufficiently secure the cross-sectional area of the rigid-body metric connecting plate and to prevent the contact surface of the rigid metric line and the connecting plate from being reduced.

1 is a sectional view of a rigid electric wire according to an embodiment of the present invention;
2 is a perspective view of a connecting plate according to an embodiment of the present invention.
3 is a perspective view showing a state in which a rigid electric wire is bonded by a connecting plate according to an embodiment of the present invention;
4 is a perspective view of an expansion joint according to an embodiment of the present invention.
5 is an exploded perspective view and a perspective view of a support clamp according to an embodiment of the present invention.
Figure 6 is a top view of a support bracket according to an embodiment of the present invention.
7 is a front view showing a state in which a rigid electric wire is connected to a railway vehicle according to an embodiment of the present invention.
8 is a cross-sectional view of a rigid electric wire according to the first embodiment of the present invention
9 is a sectional view of a rigid electric wire according to a second embodiment of the present invention
10 is a sectional view of a rigid electric wire according to a third embodiment of the present invention
11 is a cross-sectional view showing a rigid-body cable connecting structure according to a third embodiment of the present invention
12 is a cross-sectional view showing a rigid-body cable connecting structure according to a fourth embodiment of the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification.

2 is a perspective view of a connection plate according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a rigid body according to an embodiment of the present invention, As shown in Fig. FIG. 4 is a perspective view of an expansion joint according to an embodiment of the present invention, FIG. 5 is an exploded perspective view and a perspective view of a support clamp according to an embodiment of the present invention, FIG. Fig. FIG. 7 is a front view showing a state where a rigid electric wire is connected to a railroad vehicle according to an embodiment of the present invention. FIG.

1 to 7, a structure in which a rigid electric wire 50 according to an embodiment of the present invention is installed will be described.

The rigid catenary 50 includes a catenary 54 for supplying current through electrical contact with the pantograph 2 provided on the upper portion of the electric motor 1 and a rigid body 52 coupled with the catenary 54. The current conveyed by the rigid catenary line 50 is supplied through the pantograph 2 installed on the upper portion of the electric motor 1 for the purpose of running the electric motor vehicle, and the rail 60 is used as a return line.

Generally, a rigid catenary line 50 is connected to a unit of 12 m as a unit, and the height of the support bracket 300 and the support clamp 200 provided at regular intervals is such that the pantograph 2 of the electric motor 1 touches Can be installed. At this time, the rigid body 52 has protrusions 52a on both sides of the upper portion, and the protrusions 52a are supported by the support clamps 200.

The rigid electric wires 50 constituting each of the unit units may be connected to each other by a connection plate 70. 3, the bolts 74 are fastened to the bolt holes 56 and 72 in a state in which the adjacent rigid body 50 and the connecting plate 70 are fastened, You can connect.

Various modifications of the connection structure of the rigid-body electric cable 50 including the connection plate 70 can be performed by changing the number and shape of the connection plate 70 according to the design shape of the rigid- Will be described later.

A flow prevention device (not shown) is installed at a central point of the rigid electric cable 50 to prevent the rigid electric cable 50 from being pushed as the electric motor 1 passes. Between the adjacent rigid electric cables 50, The expansion joint device 100 is installed so as to absorb a change in length due to deformation of the rigid electric cable 50 during expansion and contraction and to maintain electrical contact with the pantograph 2.

The structure of the expansion joint device 100 will be described in more detail. The connection block 110 is fixed to each end of the rigid catenary cable 50. Two connection blocks 110 may be provided on both sides of the ends of the rigid electric cable 50 in the width direction. Further, two end portions of the adjacent rigid electric wire 50 may be provided on both sides in the width direction so as to correspond to the ends.

The connection block 110 is fixedly coupled to the rigid electric cable 50 by welding or bolting. At this time, the connection block 110 contacts the rigid electric cable 50 to maintain the electrical connection.

At least one connection bar 120 is inserted into the connection block 110. One end of the connection bar 120 is inserted into the connection block 110 at one side and the other end is inserted into the connection block 110 at the other side adjacent to the connection block 110.

One end and the other end of the connecting bar 120 are inserted into and connected to the adjacent connecting block 110 so that neighboring connecting blocks 110 are electrically connected to each other. 50 can be electrically connected.

Three connection bars 120 may be provided to connect the neighboring connection blocks 110. Three connection bars 120 connecting the connection blocks 110 fixed to the other side in the width direction of the rigid- And the bar 120 may be combined to electrically connect the rigid electric wire 50 separated from the six connection bars 120 to each other. However, the present invention is not limited thereto, and the number of the connection bars 120 may be varied as needed.

The connection bar 120 may be made of a metallic material having good electrical conductivity. For example, a copper bar made of copper may be used as the connection bar 120.

The connection block 110 is movably provided along the connection bar 120 inserted through the connection block 120. Therefore, when the rigid catenary 50 is extended and contracted, the connection block 110 fixed to the rigid catenary 50 moves along the connection bar 120, The electrical connection between the rigid electric wires 50 at any position of the connection bar 120 can be maintained.

A center stopper 122 may be provided at the center of the connecting bar 120 to prevent the neighboring connecting blocks 110 from colliding with each other when the rigid catenary 50 is extended.

The center stopper 122 is fixed to the center of the connecting bar 120 in a state of being penetrated by the connecting bar 120 and the center stopper 122 also functions as a marker for indicating the center of the connecting bar 120 .

Therefore, when the adjacent rigid bodies 50 have the same amount of expansion and contraction, the connecting blocks 110 on both sides of the connecting bar 120 are positioned at symmetrical distances with respect to the center stopper 122.

A plurality of connection bars 120 are maintained at an equal potential at the ends of the connection bars 120 and the connection blocks 110 are prevented from separating from the connection bars 120 when the rigid- An end stopper 124 may be provided.

The end stopper 124 is bolted to the connecting bar 120 in a state in which a bolt tap (not shown) formed on the end of the connecting bar 120 is aligned with a bolt hole (not shown) formed on the end stopper 124, 120, respectively.

A brass contact blade 154 is interposed between the rigid electric transmission lines 50 to maintain mechanical continuity in place of the intermittent metro line 52. In the portion where the rigid metro line 50 is disconnected, 154 are brought into contact with the pantograph 2 of the electric vehicle 1 in place of the electric wire 52.

Two of the contact blades 154 are inserted and fixed in the one side rigid cable 50 and the other two are inserted and fixed in the other side rigid cable and the contact blades 154 inserted in the other side are alternately overlapped.

In the expansion joint device 100 constructed as described above, when the rigid electric cable 50 is contracted, the neighboring rigid electric wires 50 are distant from each other, and the connection block 110 fixed to the rigid electric cable 50, The connection block 110 moves along the connection bar 120 in a direction in which the adjacent connection blocks 110 move away from each other.

On the contrary, when the rigid electric cable 50 is extended, the neighboring rigid electric wires 50 are brought close to each other, and the adjacent connection blocks 110 move in the direction of approaching each other along the connection bar 120 .

Even if the rigid electric cable 50 repeats elongation and contraction in this way, the separated rigid electric wires 50 continue to be electrically and mechanically connected by the connection block 110 and the connecting bar 120 constituting the expansion joint device .

5, the support clamp 200 includes a body 210, a main shaft 220 connected to the body 210 at one side, a main shaft 220 connected to the support bracket at the other side, And a support portion 230 detachably coupled to both sides of the rigid catenary 210 to slidably support the rigid catenary 50.

The body 210 may be made of the same aluminum material as the material of the rigid catenary 50 and may have a plate shape having a predetermined width. The main shaft 220 may be fixedly coupled to a central portion of the body 210. A supporting plate 240 is provided on one side of the main shaft 220 and the supporting clamp 200 is fixed to the supporting bracket 300 through a bolt 242 and a nut 244, As shown in Fig.

The support part 230 supports the rigid electric wire 50 in a slidable manner. However, if necessary, the support part 230 can selectively support the rigid electric wire 50 in a fixed state. It is also possible to apply them alternatively. Here, the support part 230 may be made of an aluminum material similar to the body 210.

5, two support portions 230 may be coupled to both sides of the body 210, and the support portions 230 may be bolted to the support portion 230 by a plurality of fixing bolts 212 and a washer 214. As shown in FIG. Of course, the support part 230 may be detached from the body 210 by disassembling the fixing bolt 212.

The supporting portion 230 includes a groove portion 232. The sliding portion 234 may be formed in the groove portion 232. The sliding portion 234 may be made of a plastic material that is in contact with the protrusion 52a of the rigid- .

The sliding portion 234 functions to smoothly move the rigid catenary 50 when the rigid catenary 50 undergoes a temperature change or a shrinkage or extension. When the rigid meticulous line 234 contacts the rigid metric 50, And may be made of a plastic material, for example, a teflon bearing.

Since the Teflon bearing has a small frictional resistance, the Teflon bearing is provided inside the groove portion 232, so that the Teflon bearing can smoothly move in a state where the projecting portion 52a is in contact with the rigid electric wire 50 when it is extended or retracted. Here, the sliding portion 234 may be configured to surround the bottom surface and the side surface of the protrusion 52a of the rigid electric cable 50.

The support 230 is coupled to both sides of the body 210 and supports the rigid catenary 50 in a slidable state.

6, the support bracket 300 may include a fixing member 310, an insulator 320, and an angle member 330. As shown in FIG.

The support bracket 300 supports the rigid catenary 50 and is installed in the support 10 installed in the ground section or the tunnel section. The support bracket 300 supports the rigid catenary 50 in accordance with the circumstance where the rigid catenary 50 is installed, So that the horizontal displacement and the vertical displacement of the rigid catenary line 50 can be controlled.

The support 10 is a structure installed in a ground section or a tunnel section so as to support the support bracket 300 at a predetermined height, and may be configured to install an H-beam in a terrestrial section or a tunnel section . 7 shows a state in which the support 10 is installed in a tunnel section. The fixing member 310 is composed of one fixing plate 311 and two fixing rods 312.

The fixing plate 311 may be a flat plate which is in close contact with one surface of the support 10, and a hole through which the fixing rod 312 penetrates is formed at four corners thereof.

Each of the fixing rods 312 is formed in a 'C' shape, and both ends of the fixing rods 312 are inserted into holes formed in the fixing plate 311 and fixed by being fastened by a nut.

The fixing plate 311 is disposed on one side of the support 10 so that both ends of the fixing rod 312 are inserted into the holes of the fixing plate 311 on the other surface of the support 10 opposite to the one side of the support 10 The fixing member 310 can be fixed to the support 10 by fastening the nut to both ends of the fixing rod 312 passing through the fixing plate 311 after the fixing rod 312 is positioned.

Two protrusions 311a are formed on the fixing plate 311 of the fixing member 310 so as to face the upper and lower surfaces of the insulator 320 and have through holes. Another through hole is formed.

The bearing bolts 318 are inserted through the through holes in a state where the fixing member 110 and the interposer 120 are disposed so that the through holes of the protruding pieces 311a and the through holes of the long- The long insulator 320 can be rotatably installed.

The elongated insulator 320 is extended from the support 10 to insulate high voltage electricity flowing along the catenary 54 from being transmitted to other structures such as the support 10, ). As described above, one end of the long-term insulator 320 is rotatably supported on the fixing member 310, and the other end is extended in a cantilever shape.

One end of the angle member 330 is fixed to the elongated insulator 320 and the other end of the angle member 330 is provided to extend in the longitudinal direction of the elongated insulator 320. A plurality of positions Adjustment holes 331 are provided.

The position adjusting holes 331 are vertically penetrated by the angle members 330 and are spaced apart from each other by a predetermined distance. The support clamp 200 is supported by the support bracket 300).

More specifically, when the holding plate 240 of the support clamp 200 is fastened through the bolt 242 and the nut 244 in a state where the holding plate 240 is placed on the position adjusting hole 331 at a desired position, May be fixed to the member (330).

Meanwhile, the other end of the angle member 330 is provided with a ground rod connector 350 for securing the safety of the operator from electricity of high voltage during maintenance and repair. The ground rod connector 350 is a rod bent in a " C " shape, and both ends of the rod are fixed to the angle member 330. Accordingly, the grounding rod (not shown) is placed in a space formed between the angle member 330 and the grounding rod connection 350, thereby grounding the grounding rod.

Although the long interposer 320 is rotatably coupled to the fixing member 310 in the present embodiment, the long interposer 320 may be welded to the fixing member 310 by welding, As shown in FIG.

Various modified examples of the rigid electric wire and the connection structure thus installed will be described with reference to the drawings.

8 is a sectional view of a rigid electric wire according to the first embodiment of the present invention.

Referring to FIG. 8, the main bar 410 is provided at the uppermost end of the rigid electric wire 400 so as to have a predetermined horizontal length. And two tension arms 420 extending downward from the lower surface of the main bar 410 so as to be symmetrical to each other.

In the present embodiment, the two tension arms 420 are formed to be inclined so that the distance between the two tension arms becomes closer to each other. That is, in FIG. 1 showing the shape of a general rigid body line, the tension arm 420 gradually flares downward. However, as shown in FIG. 8, in the present embodiment, the tension arm 420 is gradually narrowed downward .

It is confirmed that the tension arm 420 is deformed to exhibit excellent characteristics in terms of the stress level and deflection amount of the entire rigid body line 400. The specific experimental results are shown in Table 1 below.

Table 1 compares the experimental results of the stress and deformation amount (deflection amount) of the rigid body line according to the first embodiment of the present invention and the general rigid body line shown in Fig.

division Max. Stress [Mpa] Max. Disp. [Mm] Normal 97.70 - 2.94E + 00 - First Embodiment 64.11 34.37% reduction 1.06E + 00 63.78% reduction

As shown in Table 1, it can be seen that the rigid electric wire according to the first embodiment of the present invention significantly improves the stress level and the deflection amount, thereby ensuring stability and reliability even when applied to a high-speed railway.

The clamping arm 430 is extended from the end of each tension arm 420. The clamping arm 430 extends to face each other up to a predetermined distance, and the above-mentioned catenary 54 (see FIG. 1) is inserted between the ends of the clamping arms 430 and fixed.

The main bar 410, the tension arm 420, and the clamping arm 430 may be integrally formed. Since the rigid electric wire 400 configured as described above is mainly made of an aluminum elastic body, And then, when the applied force is removed, the original shape is restored.

Therefore, when the transmission line 54 is sandwiched between the clamping arms 430 with the tension arm 420 opened, pressure is applied to the transmission line 54 by the restoring force, so that the transmission line 54 can be fixed without slipping.

Particularly, since the rigid electric wire 400 according to the present embodiment has a shape that gradually narrows downward as the tension arm 420 is downward, it has a double tension structure together with the clamping arm 430, have. In other words, it is possible to exhibit excellent performance in terms of restoring force for fixing the catenary line 54, and thus the catenary line 54 can be fixed more firmly and strongly.

Further, the shape of the tension arm 420 which is gradually narrowed downward may be configured to be close to each other in a curved shape instead of a straight line. At this time, two or more inflections are possible.

When the inflection point is increased, the tension applied to the rigid catenary line 400 becomes multiple tension because the inflection point may be more than triple tension rather than the double tension, so that the gripping force for holding the catenary line 54 is further increased.

In addition, although the thickness of the tension arm 420 is the same, it is also possible to apply a variable thickness so that the tension arm 420 becomes thicker or thinner downward.

9 is a sectional view of a rigid electric wire according to a second embodiment of the present invention.

9, the rigid electric wire 500 according to the second embodiment of the present invention is also provided with a main bar 510 having a predetermined length horizontally at its uppermost end and symmetric with respect to the lower surface of the main bar 510 Two tension arms 520 extending downward are provided. At this time, in the present embodiment, the two tension arms 520 are formed so as to be inclined so that the distance between the two tension arms becomes closer to each other.

In the second embodiment, an upper protrusion 512 is further provided on the upper portion of the main bar 510. The upper protrusion 512 may extend upward from the upper surface of the main bar 510 to a predetermined height. Of course, the upper protrusion 512 may be formed to have the same height over the entire length of the rigid electric wire 500.

A plurality of the upper protrusions 512 may be formed. In the present embodiment, three upper protrusions 512 are formed on the rigid body line 500. Of course, the present invention is not limited to this, and two or three or more of them may be formed.

The upper protrusion 512 of the rigid electric wire 500 increases the second moment of the rigid electric wire 500 and increases rigidity to prevent the rigid wire 500 from sagging. That is, the upper protrusion 512 increases the stiffness so that the stress and deformation applied to the rigid electric wire 500 are reduced.

Accordingly, not only stress and strain applied to the rigid catenary line 500 can be minimized to improve the current collecting performance, but also the safety and reliability of the railway operation can be improved even when the electric railway is accelerated, There is an advantage that it can be secured.

The clamping arm 530 is also extended at the end of each tension arm 520. The clamping arm 530 extends to face each other up to a certain distance apart and is disposed between the end portions of the respective clamping arms 530 The above-mentioned electric wire 54 (see Fig. 1) is inserted and fixed.

FIG. 10 is a cross-sectional view of a rigid-body electric wire according to a third embodiment of the present invention, and FIG. 11 is a cross-sectional view illustrating a rigid-wire connection structure according to a third embodiment of the present invention.

10 and 11, the rigid catenary 600 according to the third embodiment also includes a main bar 610 and two tension arms 620 extending downward from the main bar 610 so as to be symmetrical to each other Respectively. And two clamping arms 630 connected to the two tension arms 620 and extended to face each other to a predetermined distance apart and to which a catenary cable 54 (see FIG. 1) is inserted . The upper portion of the main bar 610 may be provided with an upper protrusion for increasing the rigidity to reduce the stress and deformation applied to the rigid catenary 600.

Meanwhile, in the present embodiment, at least one protrusion 622 may be provided on the inner side of the tension arm 620. In the present embodiment, two protrusions 622 are formed at regular intervals, but the present invention is not limited thereto, and the number of protrusions 622 may be varied as needed.

The protrusion 622 basically serves to increase the second moment like the upper protrusion 612 and to increase the rigidity to prevent the rigid catenary 600 from sagging and also to connect the rigid catenary 600 The connecting plate can be used as a guide for aligning the connecting plates.

11, a first connection plate 640 is provided on the hollow inside of the tension arm 620 to connect adjacent ones of the rigid electric wires 600. As shown in FIG. Since the first connection plate 640 is in contact with the neighboring rigid electric cable 600 and electrically connects the two sides of the first connection plate 640, it is preferable that the first connection plate 640 has a sufficient cross-sectional area so as to secure the current carrying capacity.

The first connection plate 640 may have an insertion groove 642 corresponding to the protrusion 622. The protrusion 622 and the insertion groove 642 are formed at positions corresponding to each other so that when the first connection plate 640 is installed and the protrusion 622 and the insertion groove 642 are correctly aligned with the protrusion 622, ).

At this time, the protrusion 622 is protruded so as to have a smooth curved section, and the insertion groove 642 may have a triangular section. By configuring the shapes of the protrusions 622 and the insertion grooves 642 as described above, the protrusions 622 can be smoothly inserted into the insertion grooves 642, the alignment operation can be performed easily, and the protrusions 622 And the tolerance in the shape of the insertion groove 642 can be assembled.

The projections 622 and the insertion grooves 642 can make two line contacts on the entire connection portion so that the inner side surfaces of the tension arms 620 and the insertion grooves 642 And the first connection plate 640 are also improved, so that sufficient energizing capacity can be secured.

A second connection plate 650 may be provided outside the tension arm 620 to connect the first connection plate 640 and the rigid transmission line 600. The first connection plate 640 and the second connection plate 650 may be coupled to each other by a bolt 674 to be coupled to the rigid catenary 600.

The maximum thickness D1 of the second connection plate 650 is preferably less than 1/2 of the distance D2 from the end of the main bar 610 to the tension arm 620 closest to the end. This is to prevent interference with the second connection plate 650 when assembling the catenary line 54 (see FIG. 1) through the catenary insertion device.

The length and thickness of the second connection plate 650 can be adjusted so that the cross-sectional area of the first connection plate 640 can be adjusted while considering the current carrying capacity, 600 may be reduced.

12 is a cross-sectional view illustrating a rigid body connection structure according to a fourth embodiment of the present invention.

12, the rigid catenary 700 according to the fourth embodiment also includes a main bar 710 and two tension arms 720 extending downward from the main bar 710 so as to be symmetrical with respect to each other. At this time, the tension arm 720 may be extended to be closer to the lower side. And two clamping arms 730 connected to the two tension arms 720 and extended to face each other to a predetermined distance apart and to which a catenary cable 54 (see FIG. 1) is inserted .

A first connection plate 740 is provided on the inside of the tension arm 720 and a second connection plate 750 is provided on the outside of the tension arm 720 to connect the rigid electric cable 700. The main bar 710 is provided with an upper protrusion 712. A protrusion 722 is formed inside the tension arm 720 and an insertion groove 742 is formed in the first connection plate 740 so as to correspond thereto.

In the previous embodiment, two protrusions 712 are formed in this embodiment, and four protrusions 722 having two protrusions 722 in the previous embodiment are formed along the tension arm 720 It is different.

As described above, the upper protrusions 712 and the protrusions 722 can be deformed in number and size, if necessary. Through this, it is possible to compare and determine the increase in rigidity and workability of the rigid catenary 700 And the alignment reference points of the connecting plates 740 and 750 are also deformed.

Of course, ultimately, as in the previous embodiment, not only the accuracy and convenience of the alignment operation can be ensured, but also the secondary sectional area moment of the rigid catenary 700 can be increased to lower the stress level and improve the deflection amount.

The above-described rigid-body electric wire according to the present invention can secure a sufficient gripping force for a catenary, minimize stress and deformation applied to a rigid body line, and improve rigidity by improving rigidity.

In addition, it is possible to secure the safety and reliability of railway operation by the influence of pressure and lift from the pantograph as the speed of electric railway is increased. Also, by improving the sectional shape of the rigid catenary cable, structural stability can be achieved, have.

Also, it is possible to improve the productivity by aligning the connection part of the solid body line easily and precisely, and to prevent the deformation due to the self weight of the solid body line, it is possible to secure stability and reliability even when applied to the high speed railway. Sectional area can be sufficiently secured and the contact surface between the rigid body line and the connecting plate can be prevented from being reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. You can do it. It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

50: Rigid body line 100: Expansion joint
200: Support clamp 300: Support bracket

Claims (8)

Main bar;
Two tension arms integrally connected to the main bar and extending downward so as to be symmetrical to each other; And
And two clamping arms connected to the two tension arms and extending to face each other to a position spaced apart by a predetermined distance,
Wherein the two tension arms are formed such that the gap between the two tension arms is closer to the lower side. The method according to claim 1,
Further comprising at least one upper protrusion provided on the main bar and increasing the rigidity so as to reduce the stress and deformation amount applied to the rigid body line. The method according to claim 1,
Further comprising at least one protrusion protruding from the inside of the tension arm. A main bar, two tension arms integrally connected to the main bar and extending downward so as to be symmetrical to each other, and two tension arms connected to the two tension arms, respectively, And a top protrusion protruding from the upper portion of the main bar,
A first connection plate provided inside the tension arm;
A second connection plate provided outside the tension arm; And
And at least one protrusion protruding inward of the tension arm to align the first connection plate at a predetermined position. 5. The method of claim 4,
Further comprising an insertion groove formed in the first connection plate to correspond to the protrusion. 6. The method of claim 5,
Wherein the protrusions are protruded so as to form a soft curve in cross section, and the insertion grooves are formed to have a triangular section. 5. The method of claim 4,
Wherein a maximum thickness D1 of the second connection plate is less than 1/2 of a distance D2 from an end of the main bar to a tension arm closest to the end of the main bar. 5. The method of claim 4,
Wherein the two tension arms are formed to be inclined so that a gap between the two tension arms approaches each other.

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