KR100843321B1 - Apparatus for prevention of vivration of railroad - Google Patents

Abstract

The present invention utilizes existing sleepers and in-concrete concrete facilities, so that the sleepers and rails can be installed in a fixed manner on the concrete, effectively absorbing the impact loads from each direction, thereby increasing dust resistance and minimizing line breakage. 1. A track dustproof device, comprising: a first material inserted between an inner bottom surface of a dustproof box provided in a concrete and a bottom surface of a sleeper block, and made of an elastic material and deformed by a vertical load transmitted through the sleeper block to absorb a load Load absorbing means; A second load absorbing means inserted between an upper surface of the sleeper block and a bottom surface of the rail, the second load absorbing means made of an elastic material and deformed by a vertical load transmitted through the rail; A third load absorbing means inserted between both sides of each of the transverse extension parts of the lower part of the rail and each clip hook, and made of an elastic material and deformed by a transverse load transmitted through the rail to absorb the load; The lower end of one side is in close contact with the upper surface of the sleeper block, the lower end of the other side is coupled to the clip hook so as to press the upper surface of the transverse extension portion of the rail to support the rail, made of an elastic material made of a vertical according to the operation of the train Rail support means for allowing the rail to be displaced in the up and down direction and the transverse direction by the direction and the transverse load; And a coupling means for coupling the rail support means to the clip hook, and is used to reduce vibration and noise of the railway.

Antivibration Pad, Sponge Pad, Rail Pad, Guard Block, Rail Clip, Spring Washer

Description

Orbital vibration isolator {APPARATUS FOR PREVENTION OF VIVRATION OF RAILROAD}             

1 is a front sectional view of a conventional track vibration isolator.

Figure 2a is a front view showing the configuration of one embodiment of an orbital vibration isolator according to the present invention.

Fig. 2B is a plan view of Fig. 2A.

Figure 2C is a side view of Figure 2A.

Figure 3 is a plan view, front and side views showing an embodiment configuration of the dustproof pad which is the main part of the present invention.

Figure 4 is a plan view, front and side views showing one embodiment configuration of a rail pad which is another main part of the present invention.

Figure 5 is a plan view and a side view showing an embodiment configuration of the adjustment packing which is another essential part of the present invention.

Figure 6 is a front and a plan view showing an embodiment configuration of a rail clip which is another main part of the present invention.

Figure 7 is a front and side view showing an embodiment configuration of the guard block which is another main part of the present invention.

Figure 8a is a front view showing an exploded state of the orbital vibration isolator according to the present invention.                 

Fig. 8B is a side view of Fig. 8A.

* Explanation of symbols for main parts of the drawings

210: dustproof box 220: dustproof pad

230: sponge pad 240: sleeper block

250: rail pad 260: rail

270: Clip hanger 280: Adjustment packing

290: rail clip 300: fixed pin

310: guard block 320: fastening bolt

330: Spring Washer

The present invention relates to an orbital vibration isolator for reducing the noise and vibration caused by a track made of concrete, more specifically using the existing sleepers and icon concrete facilities, the sleeper and the rail is fixed to the concrete The present invention relates to an orbital vibration isolator that can be installed to effectively absorb impacts and loads from each direction, thereby increasing dust resistance and minimizing wear of a rail.                         

In general, railways, which have occupied an important position as the main infrastructure of the country, should be able to cope with the demands for speed and comfort along with the explosive demand for transportation in accordance with the rapidly changing social structure and living environment. The ease of maintenance is also an important consideration in the construction of railroads because of the difficulty of supplying orbital maintenance workers due to the increase in living standards and avoiding dangerous and hard work.

Accordingly, gravel roads that have been applied to railroads have been replaced with concrete roads in consideration of the convenience of maintenance and the blocking of environmental pollution sources, especially in the case of subways, where the ease of maintenance is an important issue as public transportation in the city. Even more so.

Since the city's subway roads install rails on concrete roads, the dustproof effect is inevitably inferior to conventional gravel roads. Therefore, severe noise and vibration are generated by the impact and friction between rails and wheels in the subway. It is unpleasant to the public and adversely affects the structures, railway vehicles and related facilities such as rails.

Referring to Figure 1 briefly described with reference to the conventional track anti-vibration device constructed in steel bridges, subway sections, etc. made of a concrete island structure for the purpose of reducing such adverse effects.

As shown in FIG. 1, a conventional track dustproof device is inserted between a concrete sleeper 102 embedded in a dustproof box 101 on a concrete island, and a bottom between the concrete sleeper 102 and an inner bottom of the dustproof box 101. And a dustproof member 103 for absorbing a vertical impact load, a rail pad 104 inserted between an upper surface of the concrete sleeper 102 and a bottom surface of the rail 111 to absorb a vertical load, and the railpad. The clip hanger 105 fixed to the upper surface of the concrete sleeper 102 adjacent to both sides of the 104, and one side of the clip hanger so as to press the upper surface of the transverse extension member 111a of the lower rail (111) ( Pandrol 107 is coupled to the 105 to secure the rail 111; It is composed of an insulating block 106 inserted between the pandroll 107 and the upper surface of the transverse extending member 111a of the rail 111.

The conventional track vibration isolator prevents a direct shock between the rail and the concrete phase by the load applied when the train passes over the rail 111 of the track to mitigate the noise and vibration during train operation, each It acts to reduce the fatigue applied to the structure.

However, in the conventional track vibration isolator as described above, the sleeper 102 constituting the track up and down the left and right shock loads generated when the train travels on the track is in direct contact with the concrete concrete and the rail 111 is Since it is received in a fixed state against concrete, the impact load is not sufficiently absorbed, and the effect of reducing noise and vibration is insignificant. Furthermore, in the curved portion of the track, uneven and wavy wear of the head of the rail 111 is severely damaged. There is a problem that proceeds rapidly.

Therefore, the present invention has been made in order to solve the above problems, the sleeper block is embedded in the dustproof box of the concrete to be spaced apart a predetermined interval from the inner side of the dustproof box by the dustproof member, the rail and the sleeper block of The purpose of the present invention is to provide an orbital vibration isolator that allows the fastening to be made of a non-fixed elastic structure so as to effectively absorb shocks and loads from each direction according to the operation of the train, thereby increasing dust resistance and minimizing line breakage. .

In order to achieve the above object, the present invention is inserted between the inner bottom of the dustproof box provided in the concrete and the bottom of the sleeper block, and made of an elastic material to absorb the load while being deformed by the vertical load transmitted through the sleeper block A first load absorbing means; A second load absorbing means inserted between an upper surface of the sleeper block and a bottom surface of the rail, the second load absorbing means made of an elastic material and deformed by a vertical load transmitted through the rail; A third load absorbing means inserted between both sides of each of the transverse extension parts of the lower part of the rail and each clip hook, and made of an elastic material and deformed by a transverse load transmitted through the rail to absorb the load; The lower end of one side is in close contact with the upper surface of the sleeper block, the lower end of the other side is coupled to the clip hook so as to press the upper surface of the transverse extension portion of the rail to support the rail, made of an elastic material made of a vertical according to the operation of the train Rail support means for allowing the rail to be displaced in the up and down direction and the transverse direction by the direction and the transverse load; And a coupling means for coupling the rail support means to the clip hook.                     

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an orbital vibration isolator using a conventional sleeper and the island structure, but made of a non-fixed structure to absorb the impact load due to the train operation by deformation of the fastening structure, Figure 2a to Figure 2c is a front view, a plan view and a side view showing the configuration of one embodiment of an orbital vibration isolator according to the present invention.

2A to 2C, the orbital vibration isolator according to the present invention is provided on the concrete, the dust box 210 is formed in the trapezoidal transverse and longitudinal inner cross-section thereof; A dustproof pad 220 installed on the inner bottom of the dustproof box 210; First and second sponge pads 230 and 231 installed to be in contact with both sides of the anti-vibration pad 220 to fix the position of the anti-vibration pad 220; A sleeper block 240 embedded in the dustproof box 210 so that its bottom surface is in contact with the top surface of the dustproof pad 220; A rail pad 250 positioned on an upper surface of the sleeper block 240; A rail 260 positioned on an upper surface of the rail pad 250; A pair of clip hooks 270 mounted on an upper surface of the sleeper block 240 to be spaced apart from the transverse extension part 260a below the rail 260 by a predetermined interval; A pair of adjustment packings 280 inserted between the ends of the transverse extension portions 260a of the rails 260 and the respective clip hooks 270; The lower end of one side is in close contact with the upper surface of the sleeper block 240, the other end of the rail clip is mounted on the respective clip hooks 270 to press and press the upper surface of the transverse extension portion (260a) of the rail 260 290; A guard block 310 coupled to the clip hanger 270 via a fixing pin 300; Through a spring washer 330 and the upper portion of the rail clip 290 is fastened to the upper portion of the guard block 310, the fastening bolt 320 for coupling the rail clip 290 and the clip hook 270 It is composed.

Here, the anti-vibration pad 220 is made of a high elastic synthetic pressure molded rubber material to ensure reliability, the side of the sleeper block 240 to a thickness that can be spaced apart from the inner side of the dustproof box 210 by a predetermined interval. Is done. That is, while the thickness of the conventional anti-vibration pad is 12 mm, in this embodiment, the anti-vibration pad 220 has a thickness of 25 mm, so that the vertical position of the sleeper block 240 is 13 mm higher than that of the conventional case. The front, rear, left, and right sides of the 240 are spaced about 0.7 mm from the inner side of the dustproof box 210.

In addition, as shown in FIG. 3, a plurality of intaglio grooves 221 are arranged on the upper and lower surfaces of the dustproof pad 220, and a plurality of holes 222 are formed in the central portion on the cross section to provide shock absorption and restoring force. In this embodiment, the spring constant of the dustproof pad 220 is about 4 to 5 ton / cm with respect to the vertical direction.

 The first and second sponge pads 230 and 231 are hard to maintain the position of the dustproof pad 220 and to prevent the sleep phenomenon of the sleeper block 240 due to the impact load and friction caused by the train operation. It is made of foam rubber material.

As shown in FIG. 4, the rail pad 250 has a plurality of intaglio grooves 251 alternately arranged on the upper and lower surfaces thereof to improve shock absorption and restoring force, and the upper surface of the rail pad 250 is in contact with the bottom of the rail 260. In order to ensure durability against frictional wear due to the front and rear, right and left movement of the rail according to the embossed projection 252 of about 0.5mm thickness is provided, the horizontal end of the rail to prevent damage caused by the load concentrated on both ends of the rail direction It is made of fiber reinforced hard rubber material.

As shown in FIG. 5, the adjustment packing 280 is formed in a “c” shaped structure consisting of an internal pressure unit 280a and a fixing protrusion 280b, and in particular, a lateral load according to the operation of a train in a curved main road. When this action is applied, the high elastic composite pressurized to be contracted in a predetermined range (maximum 2mm in this embodiment) to absorb the lateral load transmitted through the rail 260, and to move the rail 260 within a predetermined range in the lateral direction. It is made of molded rubber material. In addition, the pressure-resistant portion 280a has a structure reinforced with nylon cord yarn fiber to ensure durability.

6 is a front and side view of the rail clip 290.

As shown in FIG. 6, the rail clip 290 includes a first support member 290a having a through hole 291 through which the fastening bolt 320 passes, and one side of the first support member. The second support member 290b which is bent at a predetermined angle and extends from the sleeper block 240 as a support point, and is bent and extended in an orthogonal direction from the other side of the first support member 290a and the rail ( A third support member 290c having a top surface of the lateral extension member 260a of 260 as a support point is formed. In addition, the first and second support members (290a, 290b) is made of a steel (steel) structure coated with a fluffy fiber mixed soft rubber material of 2mm thickness, the third support member (290c) is a steel reinforcement Built-in, but consists of a concentrated rubber layer based on synthetic rubber. In addition, a crescent-shaped groove 292 is formed on a surface of the third support member 290c facing the rail 260, and a plurality of holes 293 are formed at both sides thereof.

7 is a front and side view of the guard block 310.

As shown in FIG. 7, the guard block 310 includes a first coupling member 310a having a screw hole 311 formed therein for coupling the fastening bolt 320 to the center thereof, and the first coupling member 320a. And second and third coupling members 310c and 310d each having a pinhole 312 extending in the orthogonal direction from both ends of the bottom and into which the fixing pin 300 is inserted.

8A and 8B are front and side views illustrating a state in which the rail clip 290 is coupled to the clip hanger 270.

8A and 8B, the pinhole of the guard block 310 is provided with the rail 260 positioned between two clip hooks 270 fixed to the upper surface of the sleeper block 240. 312 is concentric with the fastening hole 270a of the clip hook 270, and the fixing pin 300 is inserted into the pin hole 312 and the fastening hole 270a to insert the guard block 310 into the clip hook. After the coupling to the 270, the split pin 301 is correctly inserted to fix the fixing pin 300 so as not to fall out.

Subsequently, the rail clip 290 is positioned so that the bottom surface of the first support member 290a is in contact with the top surface of the guard block 310, and the lower side of the second support member 290b of the rail clip 290 is positioned. The end is in close contact with the upper surface of the sleeper block 240, the lower end of the third support member 290c is in close contact with the upper surface of the transverse extension member 260a of the rail 260, the fastening bolt 320 ) Is coupled to the screw hole 311 of the guard block 310 through the spring washer 330 and the through hole 291 of the rail clip 290, the rail 260 receives a predetermined vertical fixing force.

On the other hand, the spring washer 330 is preferably made of an integral structure with the fastening bolt 320.

* Looking at the detailed function and action state of each component of the orbital vibration isolator according to the present invention configured as described above are as follows.

The vertical and radial loads by the train running on the rail 260 are transmitted to the concrete through the rail 260, the rail pad 250, the sleeper block 240, and the dustproof pad 220.

At this time, the load and impact energy in the vertical and transverse directions are converted into strain energy by the anti-vibration pad 220, the rail pad 250, and the adjustment packing 280 to the vibration, noise and Breakage is reduced.

That is, since the sleeper block 240 is installed in a state in which the sleeper block 240 is spaced apart from the inner wall surface of the dustproof box 210 by the dustproof pad 220, the dustproof pad 220 is deformed as a vertical load and impact are applied. As the sleeper block moves up and down, the load and impact energy are sufficiently absorbed to reduce vibrations caused by the vertical impact of the track and frictional wear due to friction on the upper surface of the rail head 260b. Furthermore, the sleeper caused by the impact load and friction transmitted by the train operation by the first and second sponge pads (230, 231) installed on both sides of the transverse direction to fix the planar position of the vibration pad (220) The tremor of block 240 is absorbed.

In addition, the rail pad 250 is connected to the vibration pad 220 to reduce the vibration caused by the vertical impact load of the track and the wave wear on the upper surface of the rail head 260b, from the sleeper block (260) The impact load is prevented from being directly transmitted to the 240 and the size thereof is reduced to prolong the life of the sleeper block 240 and the rail 260.

In addition, the adjustment packing 280 not only serves to maintain the transverse position of the rail 260 relative to the sleeper block 240, in particular, transverse to the rail 260 during the operation of the train, such as in a curve mainly. In the case where the directional load is severely applied, the lateral load is absorbed while contracting up to a maximum of 2 mm, and the rail 260 can move in the lateral direction by an amount corresponding thereto, thereby providing the friction force applied to the upper surface of the rail head 260b. This reduces the wear and friction noise of the rail 260. Furthermore, by varying the thicknesses of the internal pressure portions 280a of the adjusting packings 280 provided on both sides of the rail 260, the transverse positions of the rails 260 can be moved within a range of approximately 10 mm. You can adjust the distance of up to 20mm.

On the other hand, the rail clip 290 is fixed to the upper surface of the sleeper block 240 by the clip hook 270, the second supporting member 290b of the sleeper block 240 as the support point and the third The support member 290c presses the upper surface of the lateral extension 260a below the rail 260 so that the rail 260 can maintain its position on the sleeper block 240. At this time, since the third support member 290c is made of a high elastic synthetic rubber reinforced by a steel plate structure, it is possible to maintain a strong fastening force while having a predetermined flexibility to prevent damage to the rail 260 fixing part. It is possible to apply the transverse and longitudinal movement of the rail within a certain limit to maintain a fluid double resistance, and also to absorb the upward reaction force acting on the rail 260 by the elasticity of the rail pad 250 As a result, the shaking of the rail 260 is prevented, and the noise reduction effect is approximately 2 dB. In addition, since the surface of the rail clip 290 is made of a coating structure, the occurrence of rust during operation is prevented, electrical insulation is guaranteed. Furthermore, the elastic force against load and impact is compensated for by the crescent shaped groove 292 and the hole 293 provided in the third support member 290c of the rail clip 290, and due to the abnormal displacement of the synthetic rubber Breakage is prevented.

In addition, since the fastening bolt 320 for coupling the rail clip 290 to the guard block 310 is fastened in a state receiving elastic force by the spring washer 330, the fastening force to the rail clip 290 is Further reinforcement, the loosening of the fastening bolt 320 by the train vibration is repeatedly applied is prevented.

On the other hand, the present invention as described above is to enable the maximum use of the existing installed track facilities to minimize the economic and time costs, the following describes the replacement operation procedure applied to the conventional concrete structure.

First, to replace the dustproof pad 220 by lifting a pulsation installed in a section of a predetermined length (about 10m or more) at least 20cm and then remove the existing dustproof pad and the dustproof pad 220 of the present invention and the first and first 2 Sponge pad (230, 231) is installed stably on the bottom surface of the existing dust-proof box 210, and then place the deterioration in its original state.                     

At this time, in order to prevent the deformation of the track, the lifting speed and the position of the entire lifting section should be kept the same, and before the lifting of the tracks, sufficient support material should be installed inside and outside of the tracks to prevent the occurrence of deformation during lifting. In addition, when lifting up the ulcers and repositioning them, careful cleaning is required to prevent dirt, such as concrete fragments, from entering into and out of the dustproof box 210.

In order to replace the rail fastening part, after removing the previously installed parts, the guard hook 310 is firmly coupled to the clip hook 270 using the fixing pin 300, and the adjustment packing 280 is installed at each installation place. Select a pair having a suitable thickness according to the gap condition of the rail and insert it between the transverse extension member 260a at the bottom of the rail 260 and the clip hooks 270 at both sides thereof, and the bottom of the rail 260 and the sleeper block 240 This is completed by inserting the rail pad 250 in between.

In this case, after the fixing pin 300 is coupled, the split pin 301 should be inserted correctly to prevent the fixing pin 300 from being separated, and the rail pad 250 should be installed by dividing the upper and lower sides accurately and the rail ( 260) wings exposed to the side should be installed so as to stably wrap the adjustment packing (280).

In addition, when the rail clip 290 is installed, the inner surface of the third support member 290c is brought into light contact with the surface facing the rail 260 of the clip hanger 270, and the end and sleeper of the second support member The upper surface of the block 240, the bottom surface of the third support member 290c and the upper surface of the transverse extension member 260a of the rail 260 should be in close contact with each other. In addition, the fastening of the fastening bolt 320 is rotated in the tightening direction by 1 to 2 turns to prevent the wear of the thread by rotating in the tightening direction, to maintain the appropriate fastening force (torque 700 ± 50 kg · cm).

As described above, after the replacement work is completed, the train is tested and checked for safety and the installation state of each installation element is checked.

The track vibration isolator according to the present invention as described above is easy to selectively apply according to the load and the conditions of the track structure can be applied to the existing STEDEF system track as well as LVT system, according to the vibration isolator of the present invention Deformation and deformation according to the elastic properties of the remarkably reduce the impact on the track, the load transmitted to the concrete is less than 5kg / ㎠.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

According to the present invention as described above, by using the concrete installed structure to reduce the economic and time costs, the transverse load is absorbed through the deformation of the adjustment packing and the transverse displacement of the rail head side It has the effect of reducing uneven wear and friction noise.

In addition, according to the present invention, the vertical load is absorbed through the deformation of the anti-vibration pad and the rail pad and the vertical displacement of the rail, thereby reducing the wave wear on the upper surface of the rail head, the vibration of the rail, and the resulting noise.

Claims (11)

A first load absorbing means inserted between the inner bottom of the dustproof box provided in the concrete and the bottom of the sleeper block, the first load absorbing means being made of an elastic material and deformed by a vertical load transmitted through the sleeper block; A second load absorbing means inserted between an upper surface of the sleeper block and a bottom surface of the rail, the second load absorbing means made of an elastic material and deformed by a vertical load transmitted through the rail; A third load absorbing means inserted between both sides of each of the transverse extension parts of the lower part of the rail and each clip hook, and made of an elastic material and deformed by a transverse load transmitted through the rail to absorb the load; The lower end of one side is in close contact with the upper surface of the sleeper block, the lower end of the other side is coupled to the clip hook so as to press the upper surface of the transverse extension portion of the rail to support the rail, made of an elastic material made of a vertical according to the operation of the train Rail support means for allowing the rail to be displaced in the up and down direction and the transverse direction by the direction and the transverse load; And Coupling means for coupling the rail support means to the clip hook Track dustproof device comprising a. The method of claim 1, The dustproof box and the lower part of the sleeper block inserted therein is made of an inverted trapezoidal shape, and the first load absorbing means has a thickness capable of supporting the lower side of the sleeper block to be spaced apart from the inner side of the dustproof box. A tracked dustproof device characterized in that. The method of claim 1, And a fixing means installed on an inner bottom surface of the dustproof box so as to be in contact with both sides of the first load absorbing means and fixing a horizontal position of the first load absorbing means. The method according to any one of claims 1 to 3, The first load absorbing means has a plurality of intaglio grooves are arranged on the upper and lower sides of the first load absorbing means to improve the shock absorption and restoring force, a plurality of holes are formed in the center of the horizontal direction. The method according to any one of claims 1 to 3, The second load absorbing means has a plurality of intaglio grooves are arranged in the upper and lower surfaces of the second load absorbing means to be staggered, the upper surface in contact with the bottom of the rail is provided with a wear-resistant member that can withstand the frictional force due to the horizontal movement of the rail Orbital vibration isolator, characterized in that. The method of claim 5, Both ends of the rail direction of the second load absorbing means is made of a fiber reinforced hard rubber material. The method according to any one of claims 1 to 3, The third load absorbing means is a pressure-resistant member is inserted between the end of the transverse extension of the lower rail and the side of the clip hook, Fixing protrusions extending in an orthogonal direction from both end portions of the pressure-resistant member to contact both sides of the clip hanger to maintain the pressure-resistant member in position Track dustproof device comprising a. The method according to any one of claims 1 to 3, The rail support means A first support member coupled to the clip hook by the coupling means; A second support member bent at a predetermined angle from one side of the first support member, the second support member having a top surface of the sleeper block as a support point; Being extended in the orthogonal direction from the other side of the first support member, made of a third support member having the upper surface of the transverse extension member of the rail as a support point, And the first to third supporting members have a steel plate structure coated with a soft rubber material. The method of claim 8, The third support member of the rail support means has a crescent-shaped groove on a surface facing the rail and provided with a plurality of holes on both sides thereof in order to supplement the elastic force and prevent damage due to abnormal displacement. Orbital dustproof device. The method of claim 8, The through hole is formed in the center of the first support member of the rail support means, The coupling means A guard block formed at a center thereof and directly below a through hole of the rail supporting means, and having a pin hole corresponding to a pin insertion hole of the clip hanger at both ends extending in an orthogonal direction; A fixing pin inserted into the pin hole of the guard block and the pin insertion hole of the clip hanger to couple the guard block to the clip hanger; A fastening bolt which penetrates the through hole of the rail supporting means and is fastened to the screw hole of the guard block to fasten the rail supporting means to the guard block. Track dustproof device comprising a. The method of claim 10, And a spring washer provided between the bolt head of the fastening bolt and the rail support means to prevent the bolt from loosening.

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