KR101606735B1 - Rail Fastening Clip for Railway - Google Patents

Rail Fastening Clip for Railway Download PDF

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Publication number
KR101606735B1
KR101606735B1 KR1020150111450A KR20150111450A KR101606735B1 KR 101606735 B1 KR101606735 B1 KR 101606735B1 KR 1020150111450 A KR1020150111450 A KR 1020150111450A KR 20150111450 A KR20150111450 A KR 20150111450A KR 101606735 B1 KR101606735 B1 KR 101606735B1
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KR
South Korea
Prior art keywords
tow
fitting portion
bent
center line
fitting
Prior art date
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KR1020150111450A
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Korean (ko)
Inventor
문정복
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(주)엘더스티앤엘
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Priority to KR1020150111450A priority Critical patent/KR101606735B1/en
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Publication of KR101606735B1 publication Critical patent/KR101606735B1/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/32—Fastening on steel sleepers with clamp members
    • E01B9/34—Fastening on steel sleepers with clamp members by resilient steel clips

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)

Abstract

A first linear bending portion formed to be connected to the fitting portion and bent in a U-shape; a straight portion formed continuously from the first bending portion and formed to be in parallel with the fitting portion; A second bent portion formed to be bent in a U-shape and inclined upward, and a tow formed in parallel with the second bent portion and formed to be parallel to the fitting portion, wherein the lower portion of the tow is cut flat The supporting surface is formed to be inclined upward from one end adjacent to the fitting portion toward the other end.
According to this structure, the support surface can be brought into contact with the insulation block in a large area, that is, in surface contact, so that the longitudinal resistance can be improved, slip can be prevented, vibration absorption performance can be improved, It is possible to prevent the closed end where the load is concentrated and to prolong the service life.

Description

[0001] Rail fastening clip for railway [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rail fastening clip having improved gripping force, and more particularly, to a rail fastening clip capable of tightly supporting a rail and a tie rail.

Generally, the rails of the railway are placed on the sleepers, and the sleepers absorb and cushion the running loads and vibrations of the railway cars delivered through the rails.

In order to effectively disperse and absorb the impact and load transmitted by the sleeper through the rail, the rails need to be elastically supported at the top of the sleeper.

As shown in Fig. 1, the rail fastening device has a rail mounted on an upper surface of a sleeper, an insulation block supported on one side of a lower flange of the rail, a shoulder closely attached to the insulation block, And a clip member coupled to the shoulder and closely supporting the insulating block with strong force.

The clip member is formed into a substantially 'W' shape or an 'e' shape by bending the metal rod.

The 'e' shaped clip member is formed so as to resist a vibration load generated during the operation of the railway vehicle, which is called an 'e clip' and is designed to form a predetermined elastic force.

A related patent is disclosed in Korean Registration Practice No. 20-0362099, entitled " Clip for fixing a rail. &Quot;

As shown in FIG. 2, the conventional rail fastening clip includes a linear fitting portion, a primary bent portion formed continuously to the fitting portion and bent in a U-shape, A second bent portion formed to be connected to the straight portion and bent in a U-shape and inclined upward; and a second bent portion formed continuously to the second bent portion and formed in parallel with the fitting portion Tow.

Therefore, the fitting portion is fitted in the fitting hole of the shoulder, and the tow is held in close contact with the upper surface of the insulating block.

The fitting portion and the tow have a step, and a tow is formed at the upper portion.

Therefore, an elastic force is exerted from the primary bent portion and the secondary bent portion, and the secondary bent portion also exerts a pressing force, so that a pressing force for suppressing vertical movement of the insulating block is generated.

As shown in Fig. 3, the bottom of the tow is cut horizontally to form a supporting surface, and the tow is in a horizontal state before it is fastened.

Then, when the rail fastening clip is fitted to the shoulder with the fitting portion interposed therebetween and the toe is tightly supported on the insulating block, as described above, the fitting portion and the toe have stepped portions. Only one side of the surface is in contact with the insulating block.

This is referred to as a line contact state.

When vibration and load are applied in such a line contact state, wear is concentrated only on the line-contacted portion of the insulating block, thereby increasing the possibility of breakage. In addition, as the grounding area of the rail fastening clip is narrow, Resulting in breakage of the insulation block.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for mounting a rail fastening clip on a support surface of a tow in consideration of a twist phenomenon caused by a displacement of a tow, A rail clamping clip with improved torsional force that can increase the vibration absorbing performance and extend the service life of the insulating block can be obtained because the support surface can contact with the insulating block in a wide area when the torsion occurs, The purpose is to provide.

The above and other objects of the present invention are achieved by providing a bending device comprising a linear fitting portion, a primary bending portion formed to be continuous with the fitting portion and bent in a U-shape, a straight line formed continuously to the primary bending portion, A second bent portion formed to be connected to the straight portion and bent in a U-shape and inclined upward; and a tow formed in parallel with the second bent portion and formed to be parallel to the fitting portion, And a support surface is formed by cutting the lower portion of the tow flat. The support surface of the tow is formed to be inclined upwards from one end adjacent to the fitting portion to the other end. .

The support surface of the tow is formed in a rectangular shape, and has a long side length of 35 to 40 mm and a short side length of 16 to 20 mm.

And the support surface of the tow is formed to be inclined upwards at an inclination angle? 1 of 3 ° to 5 ° from one end adjacent to the fitting to the other end.

And the length between the vertical center line of the fitting portion and the vertical center line of the tow is 41 to 45 mm.

The horizontal center line of the end portion of the tow is positioned above the horizontal center line of the fitting portion and the supporting surface of the tow is positioned below the horizontal center line of the fitting portion.

And the straight portion is positioned above the horizontal center line of the fitting portion.

And the height ( 4 ) from the horizontal center line of the fitting portion to the upper end of the straight portion is 24 to 30 mm.

And the supporting surface of the tow is formed to be inclined downward from the beginning to the end of the tow.

And the supporting surface of the tow is inclined downward at an inclination angle? 4 of -1 to -2 degrees from the beginning to the end of the tow.

According to the present invention, the support surface can be brought into contact with the insulation block in a wide area, that is, in surface contact, so that the longitudinal resistance can be improved to prevent slipping and the vibration absorption performance can be improved, It is possible to prevent the closing of the load which is concentrated only on a part thereof, thereby extending the service life.

1 is a view showing an example of a general rail fastening device,
2 shows a conventional rail fastening clip,
Figure 3 is a front view of a rail fastening clip with enhanced grounding force according to the present invention,
FIG. 4 is a side view showing a rail fastening clip with improved gripping force according to the present invention,
FIG. 5 is a bottom view of a rail fastening clip with improved folding force according to the present invention,
6A to 6C are structural analysis modeling illustrations showing stress comparisons according to the position of a rail clamping clip with improved grounding force according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

4 is a side view showing a rail fastening clip with improved gripping force according to the present invention, and Fig. 5 is a side view showing a rail fastening clip according to the present invention, in which the gripping force according to the present invention is improved. Fig. 6A to 6C are structural analysis modeling diagrams illustrating stress comparisons according to the position of a rail clamping clip with improved grounding force according to the present invention.

The rail fastening clip A according to the present invention has a rail fastening clip A in which one side is coupled to a shoulder 100 in which a lower pin 140 is fixedly mounted on a railroad tie and the other side is wrapped on an upper side of the shoulder 100, So that the insulating block 200 is pressed.

The insulation block 200 is coupled to press the lower flange 320 of the rail 300.

3 to 6, the rail fastening clip A with improved gripping force according to the present invention has a steel rod as a material,

A first bent portion 3 formed to be continuous with the fitting portion 2 and curved in a U-shape, and a second bent portion 3 formed in a straight line shape and inserted into the fitting hole 120 of the shoulder 100,

A rectilinear section 4 formed to be continuous with the primary bend section 3 and formed in parallel with the fitting section 2,

A secondary bent portion 5 formed continuously from the linear portion 4 and bent in a U-shape and inclined upward;

And a toe 6 formed in parallel to the second bent portion 5 and formed in parallel with the fitting portion 2 and closely supported on the upper surface of the insulating block 200.

The lower surface of the tow 6 is cut flat to form a supporting surface 60.

The supporting surface 60 of the tow 6 is formed to be inclined upward from one end adjacent to the fitting portion 2 toward the other end.

Specifically, the supporting surface 60 is formed in a rectangular shape, and has a long side length of 35 to 40 mm and a short side length of 16 to 20 mm.

The length ( 5 ) between the vertical center line of the fitting part (2) and the vertical center line of the tow (6) is preferably 41 to 45 mm.

The inclination angle? 1 of the upward slope of the support surface 60 is preferably 3 ° to 5 °.

That is, as shown in FIG. 3, one end of the support surface 60, that is, an end portion adjacent to the fitting portion 2, is formed to be inclined upward from the end to the other end.

If the fitting portion 2 is inserted into the fitting hole 120 of the shoulder 100 and the insulating block 200 is brought into contact with the supporting surface 60 of the tow 6, The tow 6 is lifted upwards (this is called a 13 mm displacement).

The straight portion 4 and the toe 6 function as a downward force and the straight portion 4 and the toe 6 are relatively moved downwardly. In this case, since the fitting portion 2 is fixed to the fitting hole 120, The straight portion 4 and the tow 6 are gathered inward to each other and the tow 6 is twisted.

By providing the support surface of the tow 6 with a width angle? 1 in advance, the supporting surface 60 inclined upward due to the twist of the tow 6 becomes substantially horizontal with the inclined surface of the insulating block 200 It is possible to make surface contact with the upper surface of the insulating block 200.

On the other hand, the linear portion 4 is located above the horizontal center line of the fitting portion 2. Specifically, the height ( 4 ) from the horizontal center line of the fitting portion 2 to the upper end of the straight portion 4 is 24 to 30 mm.

4, the supporting surface 60 of the tow 6 is formed to be inclined downward from the starting portion Ps of the tow 6 toward the end portion Pe.

Preferably, the inclination angle? 4 of the supporting surface 60 of the tow 6 is in the range of -1 to -2 degrees.

That is to say, when the rail fastening clip A is fastened to the shoulder 100 and the insulating block 200, a phenomenon in which the toe 6 is twisted and the start portion Ps of the tow 6 is heard, The surface contact can be made by providing the supporting surface of the tow 6 at a length angle? 4 inclined downward from the starting portion Ps of the tow 6 to the end portion Pe.
The horizontal center line of the end portion of the tow 6 is positioned above the horizontal center line of the fitting portion 2 and the supporting surface 60 of the tow 6 is positioned in the horizontal direction of the fitting portion 2 It is preferable that it is located at the lower part of the center line.

Table 1 below shows the fatigue test results for the rail fastening clips according to the present invention.

Figure 112015076630596-pat00001

<Condition>

The angle of the tow (θ 1 ): 4 °, the angle of the tow (θ 4 ): -1 °

It can be seen that the fatigue test (repeated load test) was performed in the state where the fastening force is low and the fatigue amplitude is high, and the performance of the coil spring creep is improved according to the load position.

On the other hand, as shown in FIG. 3, when the stress and repulsive force of the supporting surface 60 of the tow 6 were tested at three points,

Stress and repulsive force were most generated at '1' position when the same head displacement was given according to the load position of the tow (6) with respect to the fixed support surface, that is, the upper surface of the insulation block.

Conversely, stress and repulsive force were low in 'position 3'.

According to the embodiment of the present invention, since the supporting surface 60 of the tow 6 can be uniformly supported on the upper surface of the insulating block 200, that is, it can be uniformly supported from the first position to the third position And the stress and repulsive force can be attenuated.

As shown in Figs. 6A to 6C, when looking at the stress comparison for three points (which means points indicated by arrows)

Fig. 6A shows the load load on the corner of the toe (indicated by an arrow), and a 13 mm displacement, that is, a load at displacement of 12 mm kgf when the tow 6 is to be inserted at 13 mm, and a maximum stress value of 170 N / m 2. Stress is uniformly distributed to the back side of the supporting surface, that is, the starting point.

FIG. 6B shows the load applied to the outside of the toe side surface, and a load of 1250 kgf at a displacement of 13 mm, that is, at 13 mm of the tow 6, and a maximum stress value of 193 N / m 2.

Fig. 6C shows the load applied to the inside of the toe side, and a load of 1480 kgf at a displacement of 13 mm, that is, at a displacement of 13 mm of the tow 6, and a maximum stress value of 199 N / m 2. This is the disadvantage of performance because of the highest stress and load values.

Therefore, both the outer side of the tow 6 and the end edge of the toe 6 are in surface contact with the upper surface of the insulating block 200, so that the efficiency of dispersion of the stress can be maximized.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

100: shoulder 200: insulating block
300: rail 320; Bottom flange
2: fitting portion 3: primary bending portion
4: straight line portion 5: secondary bent portion
6: TOW 60: Support surface

Claims (9)

A first linear bending portion formed to be connected to the fitting portion and bent in a U-shape; a straight portion formed continuously from the first bending portion and formed to be in parallel with the fitting portion; A second bent portion formed to be bent in a U-shape and inclined upward; and a tow formed in parallel with the second bent portion and formed to be parallel to the fitting portion,
A lower surface of the tow is flatly cut to form a supporting surface,
Wherein the support surface of the tow is inclined upwardly from one end adjacent to the fitting portion to the other end, and the supporting surface of the tow is inclined downward from a start portion to an end portion of the tow,
Wherein the support surface of the tow is formed to be inclined at an inclination angle (? 1 ) of 3 ° to 5 ° from one end adjacent to the fitting portion to the other end, and the supporting surface of the tow is moved from the beginning to the end of the tow, Is inclined downward at an inclination angle (? 4 ) of 1 ° to -2 °,
The horizontal center line of the end portion of the tow is positioned above the horizontal center line of the fitting portion and the supporting surface of the tow is positioned below the horizontal center line of the fitting portion,
Wherein the straight portion is positioned above the horizontal center line of the fitting portion. The method according to claim 1,
Wherein the support surface of the tow is formed in a rectangular shape and has a long side length of 35 to 40 mm and a short side length of 16 to 20 mm. The method according to claim 1,
Wherein a length between a vertical center line of the fitting portion and a vertical center line of the tow is 41 to 45 mm. The method according to claim 1,
And a height ( 4 ) from the center of the horizontal portion of the fitting portion to the upper end of the straight portion is 24 to 30 mm. delete delete delete delete delete
KR1020150111450A 2015-08-07 2015-08-07 Rail Fastening Clip for Railway KR101606735B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101721049B1 (en) * 2016-09-09 2017-03-29 (주)엘더스티앤엘 High elasticity rail fastening apparatus for ballast track for high speed travelling of rail vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR810000800Y1 (en) * 1976-12-01 1981-07-02 팬드롤 리미팃드 Rail fastening assemblies for railroad tracks
KR930013382A (en) * 1991-12-18 1993-07-21 원본미기재 Rail rail fastening clip
JPH10503816A (en) * 1995-03-03 1998-04-07 パンドロール リミテッド Track rail securing clips and assemblies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR810000800Y1 (en) * 1976-12-01 1981-07-02 팬드롤 리미팃드 Rail fastening assemblies for railroad tracks
KR930013382A (en) * 1991-12-18 1993-07-21 원본미기재 Rail rail fastening clip
JPH10503816A (en) * 1995-03-03 1998-04-07 パンドロール リミテッド Track rail securing clips and assemblies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101721049B1 (en) * 2016-09-09 2017-03-29 (주)엘더스티앤엘 High elasticity rail fastening apparatus for ballast track for high speed travelling of rail vehicle

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