KR20200001023U - Support Clamp For Conductor Rail - Google Patents

Abstract

According to the present invention, the rigidity of the rigid line is supported by elasticity, thereby minimizing the stiffness in the longitudinal direction of the rigid line, so that the followability to the pantograph movement of the train traveling at high speed can be improved, and the horizontal load is applied to the elastic member provided in the rigid line support clamp. Or, even when an impact is applied, the present invention relates to a rigid electric wire lane support clamp that minimizes friction between the main shaft and the elastic member of the support clamp.

Description

Support Clamp For Conductor Rail

The present invention relates to a support clamp for a rigid tram line. More specifically, the present invention can elastically support the rigid tram line, thereby minimizing the stiffness in the longitudinal direction of the rigid tram line, thereby improving the followability to the pantograph movement of the high-speed train, and the elastic member provided in the rigid tram line support clamp. It relates to a rigid electric cable support clamp that can minimize friction between the main shaft and the elastic member of the support clamp even when a horizontal load or impact is applied to it.

In general, electric railroads are used by many people because of their rapid, accurate, and stable advantages compared to other transportation methods. Moreover, recently, high-speed railroads have been widely used as a safe and convenient public transportation method.

In addition to the opening of the high-speed rail, the electric railroad, which has attracted attention as a new transportation means in the 21st century, has recently been required to improve the performance, reliability, and safety of the tram line due to high-speed, high-capacity, and shorter driving time intervals.

Here, the tram line may be defined as a generic term for a line such as a tram line for supplying electric power in contact with a current collector of an electric vehicle driving a line, and facilities attached thereto.

The electric power required for driving the electric vehicle is supplied through a tram line and a pantograph, which is a current collector of a vehicle, and the electric line that supplies electricity to the electric vehicle is classified according to a method of feeding electricity.

Specifically, the tram line may be divided into an overhead catenary system and a third rail system, and the processed tram line is further divided into a rigid clam type and a suspension clam type.

Here, the suspension clam type is a method of cabling a tram line using a clam line, which is generally applied to the ground section.The required line height is high because the tram line, a clam line and a dropper line must be wired together and a peripheral device such as a tension control device is required. However, it is complicated and difficult to apply to tunnel sections.

That is, in order to apply the suspension type tramway to the tunnel section, the construction cost is excessive because the cross-sectional area of the tunnel has to be significantly increased, and the installation space is small, so it is difficult to perform routine inspection and maintenance.

On the other hand, the rigid body clamping method is to integrate a tram line into a rigid body (hereinafter referred to as a 'rigid body lane') and install it using a separate structure such as a bracket.A conch wire is not required, and a separate tension maintenance device is not required. It is applied to a section that is difficult to install due to its narrow space.

In fact, the height of a rigid tram line is about 90 to 120 mm, including the rigid body and the tram line, and the required height between the current contact of the tram line considering the support and electrical separation at low voltage (DC 750V or 1500V) and the ceiling above the tunnel is only about 500mm. Do.

Therefore, since the installation space of the rigid-type streetcar line is small, the construction cost can be greatly reduced in a new tunnel, and there is a very advantageous advantage in maintenance work inside the tunnel.

Rigid tram lines are expressed as R-Bar by shortening the rigid bar. Rigid tram lines with a double cross-sectional shape similar to T-shaped are called T-Bars. The R-Bar is used more because it has better workability and current collecting performance than the T-Bar, but in Korea, T-Bar is applied to the DC section and R-Bar is applied to the AC section.

The rigid tram line mainly uses a light aluminum alloy material because it has to act as a conductor capable of supplying electric power to the electric vehicle, and expansion and contraction occur according to changes in ambient temperature, so it must be connected and supported while allowing such expansion and contraction. .

The rigid tram line supplies power in contact with a pantograph of a train traveling at high speed.

The pantograph of the train has its own elastic support structure, which can guarantee contact reliability with the rigid electric line, but when the rigid electric line is supported by a support bracket or the like, a difference in stiffness in a support point or a region bounding it may occur. Can be.

When the difference in stiffness at the support point of a rigid tram line is large, the followability of the pantograph to the tram line is deteriorated, and a mutual shock in the vertical direction is transmitted to the pant graph or tram line, which is undesirable.

In the straight section of the tram line, stiffness, etc. of the support point of the rigid tram line is a problem in the vertical followability or impact transmission, but in the curved section of the tram line, horizontal load or horizontal pressing force of the pantograph is additionally generated, so stable contact between the rigid tram line and the pantograph Sex is more of a problem.

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

According to the present invention, the rigidity of the rigid line is supported by elasticity, thereby minimizing the stiffness in the longitudinal direction of the rigid line, so that the followability to the pantograph movement of the train traveling at high speed can be improved, and the horizontal load is applied to the elastic member provided in the rigid line support clamp. Another object of the present invention is to provide a rigid electric line support clamp that can minimize friction between the main shaft 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 mounted on the end of a support bracket for supporting a rigid electric line, in the rigid electric wire line support clamp for clamping and supporting the rigid electric line, the body provided with support portions for supporting the rigid electric line on both sides ; A main shaft mounted on the body; A shaft member surrounding the main shaft so that the main shaft is slidable therein; 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 top of the main shaft and the shaft member; And a non-metallic spacer mounted between the elastic member and the outer circumferential surface of the main shaft.

In addition, the holding plate and the shaft member may be screwed.

In addition, a nut is fastened to the upper end of the main shaft, and the elastic member may be mounted through the main shaft between the nut and the upper end of the shaft member.

Here, the elastic member is a plurality of dish springs which are penetrated and stacked through the main shaft,

The dish spring may be configured by punching a center portion of a metal-made disc having a predetermined thickness (t) and deforming the center portion and the rim in opposite directions.

In this case, at least one pair of the plurality of elastic members may be provided by being stacked in opposite directions so that the outer rim is in contact.

In addition, the spacer is mounted on the outer peripheral surface of the main shaft, and the inner ends of the pair of plate springs stacked adjacent to each other can be supported by being spaced apart from the outer peripheral surface of the main shaft.

In addition, the spacers are spaced apart and mounted on the outer circumferential surface of the main shaft, and the cross-sections can be seated on the perforated inner surface of the upper and lower adjacent plate springs including “형상” and “┣” shapes.

And, if the weight (w) per unit length of the rigid electric wire is 6 ~ 6.5 kg / m, and the pressing force with respect to the rigid electric wire of the pantograph is 350 N or less, the plate spring is made of stainless steel, The outer diameter (Do), inner diameter (Di), and torsional height (hi) may satisfy the following relationship.

- under -

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

According to the rigid tram line support clamp according to the present invention, the rigidity of the rigid tram line is minimized by elastically supporting the rigid tram line, so that the followability of the rigid tram line to the movement of the pantograph of the running train can be improved.

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

1 is a sectional view showing a rigid tram line according to an embodiment of the present invention.
2 is a plan view of a support bracket according to an embodiment of the present invention.
3 is a front view showing a state in which the rigid tram line according to an embodiment of the present invention is connected to an electric vehicle.
Figure 4 shows a perspective view of a rigid tram line support clamp according to an embodiment of the present invention.
FIG. 5 is a side view of a rigid tram line support clamp according to the embodiment shown in FIG. 4.
6 is an exploded perspective view of a rigid tram line support clamp according to the embodiment shown in FIG. 4.
7 is a cross-sectional view of a rigid tram line support clamp according to the embodiment shown in FIG. 4.
8 shows a cross-sectional view of an elastic member mounted on a rigid tank support clamp according to 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 and may be embodied in other forms. Rather, the embodiments introduced herein are provided to enable the disclosed contents to be thorough and complete, and to sufficiently convey the spirit of the present invention to those skilled in the art. Throughout the specification, the same reference numbers refer to the same components.

1 is a cross-sectional view of a rigid tram line according to an embodiment of the present invention, FIG. 2 is a plan view of a support bracket according to an embodiment of the present invention, and FIG. 3 is a rigid body according to an embodiment of the present invention A front view showing a state in which a tram line is connected to an electric vehicle is shown.

A structure in which the rigid electric tram line 50 according to an embodiment of the present invention is installed will be described with reference to FIGS. 1 to 3 as follows.

The rigid tram line 50 is composed of a pantograph 2 installed on the electric vehicle 1 and a tram line 54 supplying electric current through electrical contact and a rigid body 52 coupled to the tram line 54. This, the current transferred by the rigid tram line 50 is supplied for the operation of the electric vehicle through the pantograph 2 installed on the electric vehicle 1, the rail 60 is utilized as a return.

In general, the rigid tram line 50 is installed to be connected by about 12m as a unit unit, and the height at which the pantograph 2 of the electric vehicle 1 reaches by the support bracket 300 and the support clamp 200 provided at regular intervals Can be installed on. At this time, the rigid body 52 has protrusions 52a on both sides of the upper side, and the support clamp 200 supports the protrusions 52a.

On the other hand, as shown in Figures 2 and 3, the support bracket 300 for supporting the rigid tram line 50 can be largely composed of a fixing member 310, a long insulator 320, and an angle member 330 have.

The support bracket 300 is installed on the support 10 installed in the ground section or the tunnel section to support the rigid tram line 50, depending on the surrounding conditions in which the rigid tram line 50 is installed and errors generated during civil engineering work. It is configured to adjust the horizontal displacement and vertical displacement of the rigid tram line 50.

Here, 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 ground section or a tunnel section. . 2 and 3 show the 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 formed in a flat plate shape in close contact with one surface of the support 10, and a hole through which the fixing rod 312 is formed is formed at four corners thereof.

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

Therefore, the fixing plate 311 is disposed on one surface 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 surface of the support 10 facing the one surface of the support 10. After the fixing rod 312 is positioned, the fixing member 310 can be fixed to the support 10 by fastening nuts to both ends of the fixing rod 312 that has passed through the fixing plate 311.

The fixing plate 311 of the fixing member 310 is formed with two protruding pieces 311a facing the top and bottom surfaces of the long insulator 320 and having through holes, perpendicular to one end of the long insulator 120. Another through hole penetrating in the direction is formed.

In addition, the hinge pin 318 is fitted to penetrate the through hole in a state in which the fixing member 110 and the long insulator 120 are arranged so that the through hole of the protruding piece 311a coincides with the through hole of the long insulator 320. As a result, the long insulator 320 may be rotatably installed.

On the other hand, the long insulator 320 is installed to be extended from the support 10 and insulates so that high-voltage electricity flowing along the tram line 54 is not transmitted to the support 10 and other structures, and the rigid electric line line 50 ). As described above, the long insulator 320 has one end rotatably supported by the fixing member 310, and the other end extends in the form of a cantilever beam.

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

Here, the position adjustment hole 331 is formed to pass through the angle member 330 vertically and maintain a constant distance from each other, the support clamp for supporting the rigid tram line 50 through the position adjustment hole 331 200 may be fixed to the support bracket 300. A specific embodiment 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 in the hole 331 for position adjustment in a desired position, the support clamp 200 is angled when fastened through the bolt 242 and the nut 244 It may be fixed to the member 330.

On the other hand, the other end of the angle member 330 is provided with a ground rod connector 350 to secure the safety of workers from high voltage electricity during maintenance and repair. The ground rod connector 350 is a rod bent in a 'U' shape, and both ends thereof are fixed to the angle member 330. Therefore, a space formed between the angle member 330 and the ground rod connector 350 is grounded by placing a ground rod not shown.

In the present embodiment, the case where the long insulator 320 is rotatably coupled to the fixing member 310 is presented, but if necessary, the long insulator 320 is joined to the fixing member 310 by welding to fix it. It is also possible to configure.

The support bracket 300 provided with such a support clamp 200 is not required to be a joist than when a tramway is installed in a suspension clamping method, and a separate tension maintenance device is not required, so it can be installed in a narrow space such as a tunnel. Although there is an advantage, the stiffness deviation of the rigid electric line in the vicinity of the support point supported by the support bracket is generated, which may cause contact reliability or reliability problems with the pantograph.

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

Rigid electric line support clamp 200 according to the present invention is a rigidity deviation at the support point of the rigid electric line by interposing an elastic member 260 between the supporting brackets (see 300, 2 and 3) for the supporting clamp supporting the rigid electric line It adopts a structure that minimizes and absorbs shock.

Specifically, the rigid tram line support clamp 200 according to the present invention, shown in FIGS. 4 to 7, is mounted on an end of a support bracket for supporting a rigid tram line, and a rigid tram line support clamp 200 for clamping and supporting the rigid tram line In), the body 210 is provided on both sides of the support 230 for supporting the rigid tram line; A main shaft 220 mounted on the body 210; A shaft member 250 surrounding the main shaft 220 so that the main shaft 220 is slidable therein; A holding plate 240 through which the shaft member 250 surrounding the main shaft 220 passes and is fastened, and fastened to the support bracket; At least one elastic member 260 interposed between the upper end of the main shaft 220 and the shaft member 250 through the main shaft 220; And a non-metallic spacer 265 mounted between the elastic member 260 and the outer peripheral surface of the main shaft 220.

The rigid tram line support clamp 200 according to the present invention may be largely configured to include a body 210 provided with a support 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, but has a structure including an inner spacer 265 for preventing friction.

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

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

In addition, the body 210 and the holding plate 240 are not directly fastened 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, the holding plate 240 is fastened to the shaft member 250, the main shaft 220 is displaceable to the shaft member 250 Is 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 directly connected to the body 210 directly supporting the rigid tram line is the holding plate 240 ) Can be restrained in an elastically supported state to the shaft member 250 to be fastened.

It will be described in detail with respect to the structure of the rigid tank support clamp 200 of the present invention.

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

Both sides of the body 210 are provided with support portions 230 for clamping and supporting the rigid tram line. The main body 220 is mounted to the body 210 in the vertical direction.

The main shaft 220 is formed with threads on the upper and lower ends and can be fastened and fixed by fastening nuts 201 and 202, respectively.

The lower end of the main shaft 220 may pass through the body 210 and be fastened by a lower nut at the bottom of the body 210.

The lower nut is mounted on the bottom surface of the body 210, and a fastening groove is provided so as not to interfere with the rigid electric line line mounted on the support 230 to form a fastening space in which the lower nut is fastened.

A holding plate 240 is provided on the body 210. The holding plate 240 is mounted in parallel with the body 210 but the holding plate 240 is a pipe-shaped shaft member 250 surrounding the main shaft 220 so as to be displaceable from the main shaft 220 ).

The pipe-shaped shaft member 250 may be formed with threads on the outer circumferential surface.

The holding plate 240 has a structure in which the shaft member 250 in the form of a pipe is penetrated and fastened.

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

In addition, as shown in FIGS. 6 and 7, the holding plate 240 may be integrally formed, but the plate member 242 and the plate member 242 through which the central portion is penetrated by the shaft member 250. The upper and lower parts may be divided into an upper fastening member 241 and a lower fastening member 243, which are fastened in a screwing manner with the shaft member 250, respectively.

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

In addition, the holding plate 240 and the shaft member 250 is also a method in which the fastening member is omitted and can be configured to be a direct fastening structure.

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

Specifically, the main shaft 220 has a structure that is displaceably inserted into the shaft member 250. The upper nut 201 and the 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 provide a main shaft ( The elastic member 260 may elastically support the load applied to 220 between the support brackets.

As shown in FIG. 7, the elastic member 260 may be mounted 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 dish springs penetrating through the main shaft 220 and stacked, but a coil spring or the like may be applied.

The dish spring as the elastic member 260 may be configured by punching a center portion of a metal plate of a predetermined thickness (t), and deforming the center portion and the rim in opposite directions. The main shaft 220 is penetrated through the perforated center.

Among the elastic members 260, the reference numeral of the elastic member with the rim pointing downward is 261, and the reference numeral of the elastic member with the rim pointing upward is 263.

In addition, at least one pair of the plurality of dish springs may be stacked in opposite directions so that the outer rim abuts.

That is, as illustrated in FIGS. 6 and 7, the dish springs are alternately arranged in the stacking direction to be elastically deformable, and may be configured to generate elastic repulsive force.

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

That is, in the case of being supported without the elastic member 260 in the support bracket section, which is the support point of the rigid tram line in which the pantograph of the train traveling at high speed is contacted, the stiffness is greatly changed according to the height of the rigid tram line, etc. A problem such as the above may occur, but when the elastic member 260 is interposed, the stiffness deviation in the vertical direction of the rigid tram line can be minimized.

The plate spring-shaped elastic member 260 has a structure through which the main shaft 220 penetrates and elastically supports the load of the rigid tram line, but when the track of the train is a curved section, the horizontal load is the rigid tram line support clamp 200 ).

In this case, it is difficult to elastically support the elastic force of the elastic member 260 with respect to the horizontal load, and the stiffness deviation at the support point is intensified due to the friction between the elastic member 260 and the main shaft 220 in the form of a plate spring, Noise and shock may increase.

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

The spacer 265 may be mounted on the outer circumferential surface of the main shaft 220, and a plurality of adjacent circumferential ends of the pair of dish springs may be mounted on the outer circumferential surface of the main shaft 220 to support the inner ends of the paired springs in a non-contact state.

The spacer 265 may be made of a fluororesin engineering plastic (PEEK, Teflon, etc.) or copper / copper alloy material having low friction. In the case of engineering plastics, there is an advantage that the frictional force or coefficient of friction (0.02 ~ 0.1) is small, and in the case of copper / copper alloy material, it has the advantage of securing durability than engineering plastics.

The spacers 265 are spaced apart from each other and mounted on the outer circumferential surface of the main shaft 220, and the cross-section includes a “┨” and “┣” shape, and a perforated inner surface of a pair of dish springs arranged in opposite directions vertically adjacent to each other. It can be configured to seat on. The spacer 265 may be made of a non-metallic material, and may slip or slide along the outer circumferential surface of the main shaft 220 even when a horizontal load is applied.

As shown in FIG. 7, since the inner ends of the pair of dish springs 261 and 263 are seated and supported on one spacer 265, the dish may be applied even when a horizontal load or impact is applied to a rigid tram line in a curved section or the like. Friction of the perforated inner ends of the springs 261 and 263 and the outer circumferential surface of the main shaft 220 is prevented to provide the necessary elastic support force according to the changed vertical load or impact.

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

As described above, the dish spring perforates the central portion of the disc made of a metal material of a predetermined thickness (t), and deforms the central portion and the rim 264 in opposite directions torsion height, which is the deformation height of the central perforated portion 262 Can be composed of hi.

When the weight (w) per unit length of a rigid electric line is usually 6 to 6.5 kg / m, and the pressing force of the pantograph is 350 N or less, the dish spring is made of stainless steel (for example, SS301 / SS304 / SS316). The elastic modulus at that time is 212 GPa (SS301), 193 GPa (SS304 / SS316), the thickness (t) of each plate spring is 0.6 to 1.0 mm (mm), and the outer diameter (Do) of the plate spring is 25 to 37 millimeters (mm), the inner diameter (Di) is 13 to 19 millimeters (mm), the total height (ho) is 0.9 millimeters (mm) to 1.2 millimeters (mm). In the case of lamination, when the plate spring is tested, the outer diameter (Do), inner diameter (Di), and torsional height (hi) satisfy the following relationship, sufficiently absorb the vertical load or horizontal load of the rigid tram line and the rigidity deviation It was confirmed that it can minimize and satisfy various safety standards.

[under]

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

A spacer composed of a fluororesin engineering plastic (PEEK, Teflon, etc.) or copper / copper alloy material so that the plate spring as each elastic member is stacked to have such dimensional conditions, but the inner end of the spring is prevented from contacting with the main shaft by the spacer. According to the rigid tram line supporting clamp according to the present invention, the rigidity of the rigid tram line is minimized by elastically supporting the rigid tram line, so that the followability of the rigid tram line to the pantograph movement of the running train is improved and at the same time Even when a horizontal load or an impact is applied to the support clamp of the rigid tram line 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 variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims described below. You can do it. Therefore, if the modified implementation basically includes the components of the claims of the present invention, it should be considered that all are included in the technical scope of the present invention.

50: rigid tram line
200: support clamp
300: support bracket
260: elastic member
250: spacer

Claims (8)

In the rigid tank support clamp mounted to the end of the support bracket for supporting the rigid tram line, the rigid tram line clamping and supporting,
The body is provided on both sides of the support portion for supporting the rigid tram line;
A main shaft mounted on the body;
A shaft member surrounding the main shaft so that the main shaft is slidable therein;
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 top of the main shaft and the shaft member; And,
And a non-metallic spacer mounted between the elastic member and the outer peripheral surface of the main shaft. According to claim 1,
The holding plate and the shaft member is a rigid tram line support clamp characterized in that the screw is coupled. According to claim 1,
A rigid electric cable lane supporting clamp, wherein a nut is fastened to the upper end of the main shaft, and the elastic member is mounted through the main shaft between the nut and the upper end of the shaft member. According to claim 3,
The elastic member is a plurality of dish springs which are penetrated and stacked through the main shaft,
The dish spring is a rigid tank support clamp, characterized in that it is formed by punching a center portion of a metal material of a predetermined thickness (t) and deforming the center portion and the rim in opposite directions. The method of claim 4,
At least one pair of the plurality of elastic members are provided with a rigid electric cable support clamp, characterized in that the outer rim is stacked in opposite directions so as to contact each other. The method of claim 4,
The spacer is mounted on the outer circumferential surface of the main shaft, and the inner end of the pair of plate springs stacked adjacent to each other is spaced apart from the main circumferential outer surface in a non-contact state, thereby supporting a rigid electric cable support clamp. The method of claim 6,
The spacer is spaced apart a plurality of mounted on the outer circumferential surface of the main shaft, the cross section including the "┨" and "┣" shape, characterized in that it is seated on the perforated inner surface of the upper and lower adjacent plate spring. The method of claim 4,
If the weight (w) per unit length of the rigid electric wire is 6 to 6.5 kg / m, and the pressing force of the pantograph against the rigid electric wire is 350 N or less, the plate spring is made of stainless steel, and the outer diameter of the plate spring ( Do), the inner diameter (Di) and the torsional height (hi) is a rigid electric line support clamp, characterized in that it satisfies the following relationship.
- under -
1.75 ≤ Do / Di ≤ 2.5
0.4 ≤ hi / t ≤ 1.3
16 ≤ Do / t ≤ 40

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