KR200497341Y1 - Support Clamp For Conductor Rail - Google Patents

Abstract

This design elastically supports the rigid catenary, minimizing the longitudinal rigidity deviation of the rigid catenary, improving the ability to follow the movement of the pantograph of a high-speed train, and horizontal load on the elastic member provided in the rigid catenary support clamp. Or, it relates to a rigid catenary support clamp in which friction between the main axis of the support clamp and the elastic member can be minimized even when an impact is applied.

Description

Support clamp for rigid catenary {Support Clamp For Conductor Rail}

This invention relates to a support clamp for a rigid catenary. More specifically, the present invention elastically supports the rigid catenary, thereby minimizing the longitudinal rigidity deviation of the rigid catenary, improving the ability to follow the movement of the pantograph of a high-speed train, and the elastic member provided in the rigid catenary support clamp. This relates to a rigid catenary support clamp that can minimize friction between the main axis of the support clamp and the elastic member even when a horizontal load or impact is applied to the.

In general, electric railways are used by many people due to their advantages of being fast, accurate, and stable compared to other means of transportation. Moreover, as high-speed railways have recently become widely used, they have been in the spotlight as a safe and convenient means of public transportation.

Electric railways, which are attracting attention as a new means of transportation in the 21st century with the opening of high-speed railways, are required to improve the performance, reliability, and safety of tram lines due to the recent increase in speed, large capacity, and shortening of operation time intervals of electric railways.

Here, a tram line can be defined as a general term for tracks such as tram lines and facilities attached thereto that are used to supply power by contacting the current collectors of electric trains running on the tracks.

The power required when a train runs is supplied through the tram line and the pantograph, which is a current collector of the car. The tram lines that supply electricity to the train are classified according to the method of supplying electricity.

Specifically, the overhead catenary system can be divided into an overhead catenary system and a third rail system, and the overhead catenary system is further divided into a rigid catenary system and a suspended catenary system.

Here, the suspension method is a method of catenating a catenary using a catenary line and is generally applied to above-ground sections. The catenary, catenary line, and dropper line must be catenated together, and peripheral devices such as tension control devices are required, so the required catenary height is high. , it has the disadvantage of being complicated and difficult to apply to tunnel sections.

In other words, in order to apply a suspension type tramway to a tunnel section, the cross-sectional area of the tunnel must be significantly increased, resulting in excessive construction costs. Additionally, the installation space is narrow, so daily inspection and maintenance are not easy.

On the other hand, the rigid body jostling method integrates the catenary into a rigid body (hereinafter referred to as 'rigid tramway') and installs it using a separate structure such as a bracket, and does not require a jog line and does not require a separate tension maintaining device, so the tunnel It is applied to areas where installation is difficult due to limited space.

In reality, the height of a rigid catenary, including the rigid body and the catenary, is about 90 to 120 mm, and at low voltage (DC 750V or 1500V), considering the support and electrical separation, the required height between the current collection contact of the catenary and the upper ceiling of the tunnel is only about 500mm. do.

Therefore, since the rigid tramway requires a small installation space, construction costs can be greatly reduced in new tunnels, and it is also very advantageous in maintenance work inside the tunnel.

The rigid catenary is shortened to Rigid Bar and is expressed as R-Bar. Among these, the rigid catenary whose cross-sectional shape is similar to the letter T is called T-Bar. Although the R-Bar is widely used because it has superior constructability and current collection performance compared to the T-Bar, in Korea, the T-Bar is applied to the DC section and the R-Bar is applied to the AC section.

Since the rigid electric tram line must serve as a conductor capable of supplying power to the electric train, light aluminum alloy material is mainly used. Since expansion and contraction occur according to changes in surrounding temperature, it must be connected and supported while allowing such expansion and contraction. .

These rigid catenaries supply power while in contact with the pantograph of a high-speed train.

The pantograph of a train has its own elastic support structure, which can guarantee the reliability of contact with the rigid catenary. However, if the rigid catenary is supported by support brackets, etc., a difference in rigidity may occur at the support point or the area bordering it. You can.

If the difference in stiffness at the rigid catenary support point is large, the pantograph's ability to follow the catenary is reduced, and mutual shock in the vertical direction is transmitted to the pantograph or catenary, which is not desirable.

In the straight section of the tram line, the rigidity of the support point of the rigid tram line is problematic in terms of vertical tracking or shock transmission, but in the curved section of the tram line, the horizontal load or horizontal pressing force of the pantograph is additionally generated, ensuring stable contact between the rigid tram line and the pantograph. Gender is even more problematic.

Therefore, it is necessary to compensate for the difference in rigidity of the rigid catenary at the support point of the rigid catenary and at the same time prepare for the horizontal load that may occur in the curved section.

This design elastically supports the rigid catenary, minimizing the longitudinal rigidity deviation of the rigid catenary, improving the ability to follow the movement of the pantograph of a high-speed train, and horizontal load on the elastic member provided in the rigid catenary support clamp. Alternatively, the problem to be solved is to provide a rigid catenary support clamp that can minimize the friction between the main axis of the support clamp and the elastic member even when an impact is applied.

In order to solve the above problem, the present invention is a rigid tram line support clamp that is mounted on the end of a support bracket for supporting a rigid tram line and supports the rigid tram line by clamping it, and includes a body in which supports for supporting the rigid tram line are provided on both sides. ; a main shaft mounted on the body; a shaft member surrounding the main shaft so that the main shaft can slide inside; a holding plate through which a shaft member surrounding the main shaft is fastened and fastened to the support bracket; At least one elastic member penetrating the main shaft and interposed between the upper end of the main shaft and the shaft member; It is possible to provide a rigid catenary support clamp including a non-metallic material spacer mounted between the elastic member and the outer peripheral surface of the main shaft.

Additionally, the holding plate and the shaft member may be screwed together.

Then, a nut is fastened to the top of the main shaft, and the elastic member may be mounted between the nut and the top of the shaft member to penetrate the main shaft.

Here, the elastic member is a plurality of disk springs that penetrate the main shaft and are mounted in a stack,

The dish spring may be constructed by punching a central portion of a metal disk with a predetermined thickness (t) and deforming the central portion and the edge in opposite directions.

In this case, at least one pair of the plurality of elastic members may be stacked in opposite directions so that their outer edges contact each other.

Additionally, the spacer may be mounted on the outer peripheral surface of the main shaft, and may support the inner ends of a pair of adjacently stacked disc springs spaced apart from the outer peripheral surface of the main shaft in a non-contact state.

In addition, a plurality of the spacers are spaced apart and mounted on the outer peripheral surface of the main shaft, and have cross-sections of “┨” and “┣” shapes so that they can be seated on the perforated inner surfaces of top and bottom adjacent disk springs.

In addition, when the weight (w) per unit length of the rigid catenary is 6 to 6.5 kg/m and the pushing force on the rigid catenary of the pantograph is 350 N or less, the disk spring is made of stainless steel, and the disk spring The outer diameter (Do), inner diameter (Di), and twist height (hi) can satisfy the relationship below.

- under -

1.75 ≤ Do / Di ≤ 2.5, 0.4 ≤ hi/t ≤ 1.3, 16 ≤ Do/t ≤ 40

According to the rigid catenary support clamp according to the present invention, the longitudinal rigidity deviation of the rigid catenary is minimized by elastically supporting the rigid catenary, so the followability of the rigid catenary to the movement of the pantograph of a running train can be improved.

In addition, according to the rigid catenary support clamp according to the present invention, even when a horizontal load or impact is applied to the rigid catenary support clamp for elastically supporting the rigid catenary, the friction between the main shaft and the elastic member constituting the support clamp can be minimized. there is.

Figure 1 shows a cross-sectional view of a rigid catenary according to an embodiment of the present invention.
Figure 2 shows a plan view of a support bracket according to an embodiment of the present invention.
Figure 3 shows a front view showing a rigid tram line connected to an electric train according to an embodiment of the present invention.
Figure 4 shows a perspective view of a rigid catenary support clamp according to an embodiment of the present invention.
Figure 5 shows a side view of the rigid catenary support clamp according to an embodiment shown in Figure 4.
Figure 6 shows an exploded perspective view of the rigid catenary support clamp according to an embodiment shown in Figure 4.
FIG. 7 shows a cross-sectional view of a rigid catenary support clamp according to an embodiment shown in FIG. 4.
Figure 8 shows a cross-sectional view of an elastic member mounted on a rigid catenary support clamp according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete, and so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Like reference numerals refer to like elements throughout the specification.

Figure 1 shows a cross-sectional view of a rigid catenary according to an embodiment of the present invention, Figure 2 shows a plan view of a support bracket according to an embodiment of the present invention, and Figure 3 shows a rigid body according to an embodiment of the present invention. A front view showing a tram line connected to a train is shown.

With reference to FIGS. 1 to 3, the structure in which the rigid catenary line 50 according to an embodiment of the present invention is installed is described as follows.

The rigid tram line 50 is composed of a tram line 54 that supplies current through electrical contact with the pantograph 2 installed on the top of the train 1, and a rigid body 52 coupled to the tram line 54. The current carried by the rigid catenary 50 is supplied for the operation of the train through the pantograph 2 installed on the top of the train 1, and the rail 60 is used as a return line.

In general, the rigid electric tram line (50) is connected and installed as a unit of about 12 m, and the height at which the pantograph (2) of the electric train (1) reaches is reached by the support brackets (300) and support clamps (200) provided at regular intervals. can be installed in At this time, the rigid body 52 is provided with protrusions 52a on both sides of the upper part, and the support clamp 200 supports the protrusions 52a.

Meanwhile, as shown in FIGS. 2 and 3, the support bracket 300 supporting the rigid catenary 50 can be largely composed of a fixing member 310, a long insulator 320, and an angle member 330. there is.

This support bracket 300 is installed on the support 10 installed in the ground section or tunnel section to support the rigid catenary 50, depending on the surrounding conditions where the rigid catenary 50 is installed and errors generated during civil engineering work. It is configured to control the horizontal and vertical displacements of the rigid catenary (50).

Here, the support 10 is a structure installed in the ground section or tunnel section to support the support bracket 300 at a predetermined height, and may be configured by installing an H-beam in the ground section or tunnel section. . 2 and 3 show the support 10 installed in the tunnel section, where the fixing member 310 consists of one fixing plate 311 and two fixing rods 312.

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

Each of the fixing rods 312 is formed in a 'ㄷ' shape, and is configured to be fixed by inserting both ends into holes formed in the fixing plate 311 and then fastening them with nuts.

Therefore, the fixing plate 311 is placed on one side of the support 10, and both ends of the fixing rod 312 are inserted into the holes of the fixing plate 311 on the other side of the support 10 opposite to the one side of the support 10. After positioning the fixing rod 312, the fixing member 310 can be fixed to the support 10 by fastening nuts to both ends of the fixing rod 312 that penetrates the fixing plate 311.

On the fixing plate 311 of the fixing member 310, two protruding pieces 311a facing the upper and lower surfaces of the long insulator 320 and provided with through holes are formed, and are perpendicular to one end of the long insulator 120. Another through hole penetrating in this direction is formed.

Then, with the fixing member 110 and the long insulator 120 arranged so that the through hole of the protruding piece 311a matches the through hole of the long insulator 320, the hinge pin 318 is inserted to penetrate the through hole. As a result, the long-term insulator 320 can be rotatably installed.

Meanwhile, the long-distance insulator 320 is installed to extend from the support 10 to insulate the high-voltage electricity flowing along the catenary 54 from being transmitted to other structures, including the support 10, and to prevent the rigid catenary 50 from being transmitted to the support 10. ) plays a supporting role. As described above, one end of the long-term insulator 320 is rotatably supported by the fixing member 310, and the other end extends in a cantilever shape.

In addition, the angle member 330 has one end fixed to the long insulator 320, the other end of which is installed to extend in the longitudinal direction of the long insulator 320, and has a plurality of positions having a long cut shape in the longitudinal direction. Adjustment holes 331 are provided.

Here, the position adjustment hole 331 passes vertically through the angle member 330 and is formed to maintain a constant distance from each other. The support clamp supports the rigid tram line 50 through the position adjustment hole 331. (200) may be fixedly installed on the support bracket (300). Specific embodiments of the support clamp 200 according to the present invention will be described later.

Specifically, when the holding plate 240 of the support clamp 200 is placed on the position adjustment hole 331 at a desired position and fastened through the bolt 242 and the nut 244, the support clamp 200 is rotated at an angle. It may be fixed to member 330.

Meanwhile, a ground rod connector 350 is installed at the other end of the angle member 330 to ensure the safety of workers from high-voltage electricity during maintenance and repair. The grounding rod connector 350 is a rod bent into a 'ㄷ' shape, and both ends are fixed to the angle member 330. Therefore, grounding is achieved by placing a grounding rod (not shown) in the space formed between the angle member 330 and the grounding rod connector 350.

In this embodiment, the case where the long-distance barrier 320 is rotatably coupled to the fixing member 310 is presented, but if necessary, the long-distance barrier 320 is joined to the fixing member 310 by welding to form a fixed type. It is also possible to configure it as:

The support bracket 300 equipped with the support clamp 200 does not require a catenary wire compared to the case of installing a catenary line using the suspension method, and does not require a separate tension maintenance device, so it can be installed even in narrow spaces such as tunnels. Although this has the advantage, deviation in the rigidity of the rigid catenary line near the support point supported by the support bracket may occur, causing problems in the reliability or reliability of contact with the pantograph.

Figure 4 shows a perspective view of the rigid catenary support clamp 200 according to an embodiment of the present invention, and Figure 5 shows a side view of the rigid catenary support clamp 200 according to an embodiment shown in Figure 4. , FIG. 6 shows an exploded perspective view of the rigid catenary support clamp 200 according to an embodiment shown in FIG. 4, and FIG. 7 is a cross-sectional view of the rigid catenary support clamp 200 according to an embodiment shown in FIG. 4. shows.

The rigid catenary support clamp 200 according to the present invention is a support clamp that supports the rigid catenary by interposing an elastic member 260 between the support brackets 300 (see FIGS. 2 and 3) to maintain the rigidity deviation at the support point of the rigid catenary. Adopt a structure that minimizes shock and absorbs shock.

Specifically, the rigid catenary support clamp 200 according to the present invention shown in FIGS. 4 to 7 is a rigid catenary support clamp 200 that is mounted on the end of a support bracket for supporting the rigid catenary and clamps and supports the rigid catenary. ), the body 210 having support portions 230 for supporting the rigid tram line on both sides; A main shaft 220 mounted on the body 210; a shaft member 250 surrounding the main shaft 220 so that the main shaft 220 can slide inside; A holding plate 240 through which the shaft member 250 surrounding the main shaft 220 is fastened and fastened to the support bracket; At least one elastic member 260 passing through the main shaft 220 and interposed between the upper end of the main shaft 220 and the shaft member 250; And, a spacer 265 made of a non-metallic material mounted between the elastic member 260 and the outer peripheral surface of the main shaft 220.

The rigid catenary support clamp 200 according to the present invention may be largely composed of a body 210 provided with a support portion 230, a main shaft 220, a shaft member 250, and a holding plate 240. An elastic member 260 is provided between the end of the main shaft 220 and the end of the shaft member 250, and has a structure including a spacer 265 for preventing friction inside the elastic member 260.

The body 210 provided with the support portion 230 is configured to support a rigid tram line, the holding plate 240 is configured to be fastened to a support bracket, and the main shaft 220 and the shaft member 250 can be understood as a configuration for displaceably connecting and supporting the body 210 and the holding plate 240, respectively.

The body 210 provided with the support portion 230 clamps and supports the rigid tram line, and the holding plate 240 may be fastened to a support bracket.

Additionally, the body 210 and the holding plate 240 may not be directly coupled but may be connected via the shaft member 250 and the main shaft 220.

Specifically, the body 210 is fastened to the main shaft 220, and the holding plate 240 is fastened to the shaft member 250, and the main shaft 220 is displaceable to the shaft member 250. Supported.

Here, at least one elastic member 260 is interposed between the main shaft 220 and the shaft member 250, and the main shaft 220, which is directly connected to the body 210 that directly supports the rigid catenary, is connected to the holding plate 240. ) may be restrained in an elastically supported state by the shaft member 250 that is fastened to the shaft member 250.

The structure of the rigid catenary support clamp 200 of the present invention will be described in detail.

The body 210 is made of aluminum, the same material as that of the rigid catenary 50, and may be in the form of a plate with a predetermined width. The main shaft 220 may be fixedly coupled to the central portion of the body 210.

Support parts 230 are provided on both sides of the body 210 to clamp and support the rigid tram line. A main shaft 220 is mounted on the body 210 in a vertical direction.

The main shaft 220 has threads formed at the top and bottom and can be fastened and fixed by fastening nuts 201 and 202, respectively.

The lower end of the main shaft 220 may penetrate the body 210 and be fastened to the bottom of the body 210 by a lower nut.

The lower nut is mounted on the bottom of the body 210, and a fastening groove is provided so as not to interfere with the rigid tram wire mounted on the support portion 230, thereby forming a fastening space into which the lower nut is fastened.

A holding plate 240 is provided on the upper part of the body 210. The holding plate 240 is mounted parallel to the body 210, and in order to be displaceably mounted with the main shaft 220, the holding plate 240 is attached to a pipe-shaped shaft member 250 surrounding the main shaft 220. ) can be concluded.

The pipe-shaped shaft member 250 may have threads formed on its outer peripheral surface.

The holding plate 240 has a structure in which a pipe-shaped shaft member 250 penetrates and is fastened.

A through hole through which the shaft member 250 passes is formed in the center of the holding plate 240, and the holding plate 240 and the shaft member 250 may be screwed together.

And, as shown in FIGS. 6 and 7, the holding plate 240 may be formed as one body, but it may be composed of a plate member 242 whose center is penetrated by the shaft member 250 and the plate member 242. It may be divided into an upper fastening member 241 and a lower fastening member 243, which are respectively fastened to the shaft member 250 at the upper and lower ends by a screw connection method.

The lower fastening member 243 has threads formed on the outer peripheral surface and the inner peripheral surface, respectively, and is fastened to the outer peripheral thread of the shaft member 250 through the thread on the inner peripheral surface, and is connected to the inner peripheral surface of the through hole of the holding plate 240 through the thread on the outer peripheral surface. It may have a structure that is fastened to a screw thread.

In addition, the holding plate 240 and the shaft member 250 may be configured in a structure in which the fastening member is omitted and the holding plate 240 and the shaft member 250 are directly fastened together.

The shaft member 250 may be configured as a pipe structure in which the main shaft 220 is slidably accommodated.

Specifically, the main shaft 220 has a structure that is inserted into the shaft member 250 so that it can be displaced. An upper nut 201 and a lower nut 202 are fastened to the upper and lower ends of the main shaft 220, and an elastic member 260 is mounted between the upper nut 201 and the upper end of the shaft member 250 to secure the main shaft ( The elastic member 260 can elastically support the load applied to the load 220) between the support brackets.

As shown in FIG. 7, the elastic member 260 may be installed through the main shaft 220 between the lower end of the upper nut and the upper end of the shaft member 250.

The elastic member 260 may be a plurality of disk springs that penetrate the main shaft 220 and are stacked, but coil springs and the like may also be applied.

The disk spring as the elastic member 260 may be constructed by punching a central portion of a metal disk with a predetermined thickness t and deforming the central portion and the edge in opposite directions. The main shaft 220 penetrates through the perforated center.

Among the elastic members 260, the reference numeral for the elastic member whose edge faces downward is designated as 261, and the reference numeral for the elastic member whose edge faces upward is designated as 263.

Additionally, at least one pair of the plurality of disc springs may be stacked in opposite directions so that their outer edges contact each other.

That is, as shown in FIGS. 6 and 7, the disk springs may be arranged alternately in opposite directions to the stacking direction to enable elastic deformation and generate elastic repulsion force.

There is an effect of reducing the overall vertical stiffness deviation of the rigid catenary clamped to the support portion 230 of the body 210 by the plurality of stacked disk springs.

That is, when the pantograph of a high-speed train is supported without an elastic member 260 in the support bracket section that is the support point of the rigid catenary, the rigidity changes significantly depending on the height of the rigid catenary, etc., resulting in deterioration of contact with the pantograph or transmission of shock. Problems such as these may occur, but when the elastic member 260 is interposed, the vertical stiffness deviation of the rigid catenary can be minimized.

The elastic member 260 in the form of a disk spring has a structure that penetrates the main shaft 220 and elastically supports the load of the rigid catenary in the vertical direction. However, when the train track is a curved section, the horizontal load is applied to the rigid catenary support clamp (200). ) can be transmitted.

In this case, it is difficult to elastically support the horizontal load by the elastic force of the elastic member 260, and the deviation in rigidity at the support point becomes worse due to friction between the disk spring-shaped elastic member 260 and the main shaft 220, Noise and shock may increase.

In order to solve this problem, the rigid catenary support clamp 200 according to the present invention may further include a spacer 265 mounted between the elastic member 260 and the outer peripheral surface of the main shaft 220.

The spacer 265 is mounted on the outer peripheral surface of the main shaft 220, and a plurality of spacers 265 may be mounted on the outer peripheral surface of the main shaft 220 in order to support the inner ends of a pair of adjacent disk springs in a non-contact state.

The spacer 265 may be made of a fluororesin engineering plastic (PEEK, Teflon, etc.) with low friction or a copper/copper alloy material. Engineering plastics have the advantage of having a low friction force or coefficient of friction (0.02 to 0.1), and copper/copper alloy materials have the advantage of being more durable than engineering plastics.

A plurality of spacers 265 are spaced apart and mounted on the outer peripheral surface of the main shaft 220, and the cross-sections include “┨” and “┣” shapes and are perforated inner surfaces of a pair of disk springs arranged in opposite directions up and down. It may be configured to be seated on. The spacer 265 may be made of a non-metallic material, and may slip or slide along the outer peripheral surface of the main shaft 220 even when a horizontal load is applied.

As shown in FIG. 7, the inner ends of the pair of dish springs 261 and 263 are seated and supported on one spacer 265, so even when a horizontal load or impact is applied to the rigid catenary in a curved section, etc., the dish Friction between the perforated inner ends of the springs 261 and 263 and the outer peripheral surface of the main shaft 220 can be prevented, thereby providing the elastic support required according to the changing vertical load or impact.

Figure 8 shows a cross-sectional view of the elastic member 260 in the form of a disk spring mounted on the rigid catenary support clamp 200 according to the present invention.

As described above, the disk spring perforates the center of a metal disk with a predetermined thickness t, and deforms the center and the edge 264 in opposite directions to create a twist height that is the deformation height of the center perforated portion 262. may be composed of hi.

The weight (w) per unit length of a rigid catenary is usually 6 to 6.5 kg/m, and when the pushing force of the pantograph is less than 350 N, the dish spring is made of stainless steel (e.g., SS301/SS304/SS316). The elastic modulus at that time is 212 GPa (SS301) and 193 GPa (SS304/SS316), the thickness (t) of each disc spring is 0.6 to 1.0 millimeters (mm), and the outer diameter (Do) of the disc spring is When the disc spring is 25 to 37 millimeters (mm), the inner diameter (Di) is 13 to 19 millimeters (mm), and the overall height (ho) is 0.9 millimeters (mm) to 1.2 millimeters (mm), 5 to 15 disc springs are used. In the case of lamination, the disk spring can sufficiently absorb the vertical or horizontal load of the rigid catenary and the rigidity deviation if the outer diameter (Do), inner diameter (Di), and torsion height (hi) satisfy the following relationships. It was confirmed that it was possible to minimize and satisfy various safety standards.

[under]

1.75 ≤ Do/Di ≤ 2.5, 0.4 ≤ hi/t ≤ 1.3 and 16 ≤ Do/t ≤ 40

Disk springs as individual elastic members are stacked to have the above dimensional conditions, but the spacer is made of fluoropolymer engineering plastic (PEEK, Teflon, etc.) or copper/copper alloy material to prevent the inner end of the spring from contacting the main shaft, etc. According to the rigid catenary support clamp according to the present invention, which elastically supports the rigid catenary, the longitudinal rigidity deviation of the rigid catenary is minimized, so the followability of the rigid catenary to the movement of the pantograph of the running train is improved and at the same time, the rigid catenary is maintained. Even when a horizontal load or impact is applied to the rigid catenary support clamp for elastic support, friction between the main shaft and the elastic member constituting the support clamp can be minimized.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art may modify and change the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the claims described below. It will be possible to implement it. Therefore, if the modified implementation basically includes the elements of the patent claims of the present invention, it should be considered to be included in the technical scope of the present invention.

50: Rigid catenary
200: Support clamp
300: Support bracket
260: elastic member
250: spacer

Claims (8)

In the rigid catenary support clamp that is mounted on the end of the support bracket for supporting the rigid catenary and clamps and supports the rigid catenary,
A body having supports on both sides that support the rigid tram line;
a main shaft mounted on the body;
a shaft member surrounding the main shaft so that the main shaft can slide inside;
a holding plate through which a shaft member surrounding the main shaft is fastened and fastened to the support bracket;
A plurality of disk springs are installed in a stack between the top of the main shaft and the shaft member to penetrate the main shaft, and the center of a metal disk with a predetermined thickness (t) is perforated, and the center and the edge are deformed in opposite directions. Consisting of an elastic member; and,
A rigid catenary support clamp comprising a non-metallic spacer mounted between the elastic member and the outer peripheral surface of the main shaft. According to paragraph 1,
A rigid catenary support clamp, characterized in that the holding plate and the shaft member are screwed together. According to paragraph 1,
A rigid catenary support clamp, characterized in that a nut is fastened to the top of the main shaft, and the elastic member is mounted between the nut and the top of the shaft member. delete According to paragraph 1,
A rigid catenary support clamp, characterized in that at least one pair of the plurality of elastic members is stacked in opposite directions so that the outer edges are in contact with each other. According to paragraph 1,
The spacer is mounted on the outer peripheral surface of the main shaft, and supports the inner ends of a pair of adjacent disk springs in a non-contact state with the outer peripheral surface of the main shaft. According to clause 6,
A rigid catenary support clamp, characterized in that a plurality of spacers are spaced apart and mounted on the outer peripheral surface of the main shaft, and the cross-section includes “┨” and “┣” shapes and is seated on the perforated inner surface of the upper and lower adjacent disk springs. According to paragraph 1,
When the weight (w) per unit length of the rigid catenary is 6 to 6.5 kg/m, and the pushing force on the rigid catenary of the pantograph is 350 N or less, the disk spring is made of stainless steel, and the outer diameter of the disk spring ( Do), inner diameter (Di), and torsion height (hi) are rigid catenary support clamps that satisfy the following relationships.
- under -
1.75 ≤ Do/Di ≤ 2.5
0.4 ≤ hi/t ≤ 1.3
16 ≤ Do/t ≤ 40

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