WO2009151193A1

WO2009151193A1 - Vibration proof apparatus of floating track

Info

Publication number: WO2009151193A1
Application number: PCT/KR2008/007302
Authority: WO
Inventors: Jin Ho Kim; Seok Youn Han; Woo Dong Lee; Jong Duk Chung
Original assignee: Korea Railroad Research Institute KRRI
Current assignee: Korea Railroad Research Institute KRRI
Priority date: 2008-06-13
Filing date: 2008-12-10
Publication date: 2009-12-17
Anticipated expiration: 2010-12-13
Also published as: KR100986811B1; KR20090129848A

Abstract

A vibration-proof apparatus of a floating track exhibits not only a vibration-proof property against impacts and vibrations in a vertical direction occurring at a track of a railway but also a vibration-proof property against impacts and vibrations in a horizontal direction, caused by braking of a train or the like. The vibration-proof apparatus of a floating track supports a floating-type slab track (20) and absorbs and intercepts vibration transferred from above, the vibration-proof apparatus including: a lower frame (130) having an inclined plate (133), a rubber assembly (120) installed to the inclined plate of the lower plate (130), an upper frame (110) having an inclined plate (113) covering the rubber assembly, the upper frame supporting the floating-type slab track (20); and a coupling means for coupling the upper frame (110), the lower frame (130) and the rubber assembly (120).

Description

VIBRATION PROOF APPARATUS OF FLOATING TRACK

Technical Field

[1] This disclosure relates to a vibration-proof apparatus of a floating track, which floats a slab track and also buffers vertical vibrations occurring at the track. Background Art

[2] An existing vibration-proof apparatus of a floating track has a vertical spring. This vibration-proof apparatus is mounted between a slab track and a railway or located at the top of the trackbed to float the slab track and buffer vertical vibrations of the track.

[3] The above vibration-proof apparatus using a vertical spring exhibits great resistance against a vertical force and vibrations occurring at the tract, but loads or vibrations applied in a horizontal direction due to braking of a train are not absorbed by the spring but by a case accommodating the spring. In the existing vibration-proof apparatus, the case is mounted on a concrete portion. Thus, as the case of the anti-proof apparatus receives impacts and vibrations for a long time, the concrete is damaged and the buffering effect against impacts and vibrations is also deteriorated. In addition, the existing vibration-proof apparatus does not ensure easy maintenance in, for example, replacement.

Disclosure of Invention Technical Problem

[4] This disclosure is designed to solve the above problems, and therefore it is directed to providing a vibration-proof apparatus of a floating track, which is configured to absorb vibrations in both vertical and horizontal directions. The disclosure is also directed to providing a vibration-proof apparatus of a floating track, which allows easy repair Technical Solution

[5] In one aspect, there is provided a vibration-proof apparatus of a floating track, which uses a rubber assembly

Advantageous Effects

[6] The vibration-proof apparatus of a floating track disclosed herein has an advantage in that a rubber assembly is arranged thereto with a slope to effectively absorb impacts and vibrations in both vertical and horizontal directions.

[7] Also, the vibration-proof apparatus of a floating track disclosed herein uses a jacket to decrease a gap between upper and lower frames, which results in decrease of its height, so the vibration-proof apparatus may be easily taken off from the slab track for repair Brief Description of Drawings

[8] The above and other aspects, features and advantages of the disclosed exemplary embodiments will be more apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

[9] Fig. 1 is a schematic view showing a vibration-proof apparatus mounted between a floating-type slab track and a railway;

[10] Fig. 2 is a perspective view showing a vibration-proof apparatus of a floating track according to one embodiment disclosed herein;

[11] Fig. 3 is a sectional view showing the vibration-proof apparatus of Fig. 2;

[12] Fig. 4 is a perspective view showing a lower frame employed in the vibration-proof apparatus of Fig. 2;

[13] Fig. 5 is a perspective view showing a rubber assembly employed in the vibration- proof apparatus of Fig. 2;

[14] Fig. 6 is a perspective bottom view showing an upper frame employed in the vibration-proof apparatus of Fig. 2; and

[15] Fig. 7 is a schematic view showing that a jack is used to lower a height of the vibration-proof apparatus of Fig. 2. Best Mode for Carrying out the Invention

[16] Exemplary embodiments now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth therein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. In the description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments.

[17] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the use of the terms a, an, etc. does not denote a limitation of quantity, but rather denotes the presence of at least one of the referenced item. The use of the terms "first", "second" and the like does not imply any particular order, but they are included to identify individual elements. Moreover, the use of the terms first, second, etc. does not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another. It will be further understood that the terms "comprises" and/or "comprising" or "includes" and/or "including" when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

[18] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[19] In the drawings, like reference numerals in the drawings denote like elements. The shape, size and regions, and the like, of the drawing may be exaggerated for clarity.

[20] A vibration-proof apparatus of a floating track supports a floating-type slab track, and the vibration-proof apparatus includes a lower frame having an inclined plate; a rubber assembly placed on the inclined plate of the lower plate; an upper frame having an inclined plate covering the rubber assembly, the upper frame supporting the floating-type slab track; and a coupling means for coupling the upper frame, the lower frame and the rubber assembly.

[21] Here, the lower frame may include a lower plate having a plate structure; and two inclined plates fixed to an upper surface of the lower plate with a slope to configure a triangular shape, wherein a coupling hole may be formed in the inclined plate, and a coupling hole is formed in a side of the lower plate. Also, the upper frame may include an upper plate having a plate structure; and two inclined plates fixed to a lower surface of the upper plate to be gradually wider from each other, wherein a coupling hole may be formed in the inclined plate of the upper frame, and a coupling hole may be formed in a side of the upper plate.

[22] Here, the rubber assembly may include a plurality of steel plates corresponding to an area of the inclined plate of the lower frame; and rubber members located between the steel plates and attached to both surfaces of the facing steel plates, wherein the steel plates may be respectively located at an outer side of the rubber assembly.

[23] Here, the vibration-proof apparatus of a floating track may further include a jacket, which includes a first coupling portion coupled to the upper frame; a second coupling portion coupled to the lower frame; and an extendable member coupled to the first and second coupling portions to increase or decrease a gap between the first and second coupling portions. The extendable member may be configured with a bolt having one end fixed to one of the first and second coupling portions and the other end coupled with a nut in a groove at the other of the first and second coupling portions such that the extendable member increases or decreases its length by means of screwing operation. [24] As shown in Fig. 1, a floating-type slab track is located on a railway 10 or a trackbed, and a vibration-proof apparatus 100 is located between a slab track 20 and the railway 10 or between the slab tract and the trackbed (hereinafter, the railway and the trackbed are collectively referred to as railway) to absorb impacts and vibrations transferred in a vertical or horizontal direction, thereby intercepting the propagation of impacts and vibrations to the railway 10.

[25] As shown in Figs. 2 and 3, the vibration-proof apparatus 100 includes a lower frame

130 installed on an upper surface of the railway 10, a rubber assembly 120 located on the lower frame 130 with a slope, and an upper frame 110 placed on the rubber assembly 120 and coupled with the lower frame 130 to support the slab track 20. As shown in Fig. 4, the lower frame 130 includes a lower plate 131 with a plate structure, and two inclined plates 133 located with a slope of about 40 to face an upper surface of the lower plate 131 in a triangular shape. In order to support the two inclined plates 133, a support member 135 composed of a stiff ener may be additionally installed between the inclined plate 133 and the lower plate 131. As will be explained later, a rubber assembly 120 is installed and coupled to the inclined plate 133. In order to integrally couple the rubber assembly using a coupling means such as a bolt, a plurality of coupling holes 133F are formed in the inclined plate 133 in the embodiment illustrated in the drawings. As will be explained later, in order to configure the vibration-proof apparatus in a shrinkable structure, the plurality of coupling holes 13 IF are formed in a side of the lower plate. Here, the coupling holes 133F formed in the inclined plate 133 may have female threads such that a coupling means such as a bolt may be coupled thereto, or the coupling holes 133F may be simple bores such that a coupling means, which is explained later, may be fixed using a nut at the bottom of the inclined plate 133, as shown in Fig. 3. The coupling holes 13 IF formed in the side of the lower plate 131 may have female threads.

[26] As shown in Fig. 5, the rubber assembly 120 placed on the inclined plate 133 includes a plurality of steel plates 121 corresponding to an area of the inclined plate 133. Also, the rubber assembly 120 includes a rubber member 123 located between the steel plates 121 and having steel plates 121 at both outermost sides thereof. The steel plates 121 are respectively located at both sides of the rubber assembly 120. Also, the rubber assembly 120 has holes 120H in correspondence to the coupling holes 133F formed in the inclined plate 133, and the hole 120H formed in the rubber assembly 120 may have a diameter greater than that of the coupling hole 133F of the inclined plate 133.

[27] Meanwhile, the upper frame 110 is coupled on the rubber assembly 120 while the rubber assembly 120 is installed on the lower frame. As shown in Fig. 6, the upper frame 110 includes an upper plate 111, and two inclined plates 113 fixed to a lower portion of the upper plate 111 to face each other while becoming wider with an angle in accordance with the inclined shape of the rubber assembly 120. Similarly to the lower frame 130, in order to support the two inclined plates 113, a support member 115 composed of a stiff ener may be additionally installed between the inclined plate 113 and the upper plate 111, if necessary. Coupling holes 113H are also formed in the inclined plate 113 of the upper frame 110 in correspondence to the holes 120H formed in the rubber assembly 120, and as a structure for shrinking the vibration-proof apparatus which will be explained later, a plurality of coupling holes 11 IF are formed in a side of the upper plate 111. The coupling holes 11 IF may also have female threads.

[28] Hereinafter, assembling and operating processes of the vibration-proof apparatus of a floating track configured as above will be explained. The rubber assembles 120 are respectively located on the inclined plates 133 of the lower frame 130. The coupling holes 133F formed in the inclined plates 133 of the lower frame 130 are arranged in correspondence to the holes 120H formed in the rubber assembly 120, and in this state, the upper frame 110 is placed thereon. Then, the coupling holes 113H formed in the inclined plates 113 of the upper frame 110 are located in correspondence to the holes 120H of the rubber assembly 120.

[29] In this state, a coupling means 140 such as a bolt is put through the coupling holes

113H, the holes 120H and the coupling holes 133F, and a nut is coupled and fixed to an end of the coupling means. It is also possible that the coupling hole 133F has a female thread such that an end of the coupling means 140 is directly fixed to the coupling hole 133F, namely to the inclined plate 133 of the lower frame 130. However, various structures may be adopted to integrally couple the inclined plate 113 of the upper frame 110, the rubber assembly 120 and the inclined plate 133 of the lower frame 130, in addition to the above method using the coupling means 140.

[30] If the lower frame 130, the rubber assembly 120 and the upper frame 110 are coupled as mentioned above to assemble the vibration-proof apparatus 100, the assembled vibration-proof apparatus 100 of a floating track is located between the floating-type slab track 20 and the railway 10. Then, the upper plate 111 of the upper frame 110 comes in contact with a bottom of the floating-type slab track 20, and the lower plate 131 of the lower frame 130 is placed on the upper surface of the railway 10. Thus, impacts and vibrations in vertical and horizontal directions, transferred from above through the track are absorbed in the rubber assembly 120, thereby intercepting the propagation of impacts and vibrations to the railway 10.

[31] Meanwhile, the vibration-proof apparatus 100 disclosed herein further includes a following structure that helps the vibration-proof apparatus 100 to be more easily taken off from the location between the floating-type slab track 20 and the railway 10 using a jacket 150. In more detail, as explained above, the coupling holes H lF, 131F are formed in the sides of the upper plate 111 and the lower plate 131. The jacket 150 is coupled to the coupling holes H lF, 13 IF. In more detail, the jacket 150 includes a first coupling portion 151 coupled to the side of the upper plate 111, a second coupling portion 152 coupled to the side of the lower plate 131, and an extendable member for increasing and/or decreasing the distance between the first coupling portion 151 and the second coupling portion 152, as shown in Fig. 7.

[32] The first coupling portion 151 and the second coupling portion 152 are detachably coupled to the coupling holes 111 F, 131F formed in the sides of the upper plate 111 and the lower plate 131 while being positioned in correspondence to the sides of the upper plate 111 and the lower plate 131, respectively. In the embodiment illustrated in the drawing, the coupling holes 111 F, 13 IF have screws, and bolts are inserted through the first coupling portion 151 and the second coupling portion 152 such that the bolts are coupled to the coupling holes 111 F, 13 IF formed in the sides of the upper plate 111 and the lower plate 131. In this way, the first coupling portion 151 is detachably fixed to the side of the upper plate 111, and the second coupling portion 131 is detachably fixed to the side of the lower plate 131.

[33] Meanwhile, in the embodiment illustrated in the drawings, the extendable member is configured with a bolt member 153. One end of the bolt member 153 is fixed to the second coupling portion 152, and the other end is screwed in a groove of the first coupling portion 151. If the screw located in the groove of the first coupling unit 151 is rotated in this state to fasten the bolt 153, the first coupling portion 151 is moved toward the second coupling portion 152, thereby decreasing the gap between the upper frame 110 and the lower frame 130. The gap between the upper frame 110 and the lower frame 130 may be decreased since the rubber assembly 120 located between the upper frame 110 and the lower frame 130 may be shrunk. In this state that the height of the vibration-proof apparatus 100 is lowered, the vibration-proof apparatus 100 may be easily taken out from between the floating-type slab track 20 and the railway 10. Though it has been explained with reference to the embodiment illustrated in the drawing that one end of the bolt 153 is fixed to the second coupling portion 152, it is also possible that one end of the bolt 153 is fixed to the first coupling portion 151 and the other end is coupled to the nut in the groove of the second coupling portion 152, oppositely to the above. In addition, in order to decrease the gap between the first coupling portion 151 and the second coupling portion 152, a separate jack or other devices may be used instead of the above configuration using a bolt. Industrial Applicability

[34] The vibration-proof apparatus of a floating track disclosed above may be mounted between a lower portion of the slab track and the railway or located at the top of the trackbed.

[35]

[36] While the exemplary embodiments have been shown and described, it will be understood by those skilled in the art that various changes in form and details may be made thereto without departing from the spirit and scope of this disclosure as defined by the appended claims.

[37] In addition, many modifications can be made to adapt a particular situation or material to the teachings of this disclosure without departing from the essential scope thereof. Therefore, it is intended that this disclosure not be limited to the particular exemplary embodiments disclosed as the best mode contemplated for carrying out this disclosure, but that this disclosure will include all embodiments falling within the scope of the appended claims.

[38]

Claims

[1] A vibration-proof apparatus of a floating track, which supports a floating-type slab track (20) and absorbs and intercepts vibration transferred from above, the vibration-proof apparatus comprising: a lower frame (130) having an inclined plate (133); a rubber assembly (120) installed to the inclined plate of the lower plate (130); an upper frame (110) having an inclined plate (113) covering the rubber assembly, the upper frame supporting the floating-type slab track (20); and a coupling means for coupling the upper frame (110), the lower frame (130) and the rubber assembly (120). [2] The vibration-proof apparatus of a floating track according to claim 1, wherein the lower frame (130) includes: a lower plate (131) having a plate structure; and two inclined plates (133) fixed to an upper surface of the lower plate with a slope to configure a triangular shape, wherein a coupling hole (133F) is formed in the inclined plate (133), and a coupling hole (131F) is formed in a side of the lower plate. [3] The vibration-proof apparatus of a floating track according to claim 1 or 2, wherein the upper frame (110) includes: an upper plate (111) having a plate structure; and two inclined plates (113) fixed to a lower surface of the upper plate to be gradually wider from each other, wherein a coupling hole (113F) is formed in the inclined plate of the upper frame, and a coupling hole (11 IF) is formed in a side of the upper plate (111). [4] The vibration-proof apparatus of a floating track according to claim 1 or 2, wherein the rubber assembly (120) includes: a plurality of steel plates (121) corresponding to an area of the inclined plate of the lower frame; and rubber members (123) located between the steel plates and attached to both surfaces of the facing steel plates, wherein the steel plates (121) are respectively located at an outer side of the rubber assembly. [5] The vibration-proof apparatus of a floating track according to claim 1 or 2, further comprising a jacket (150), which includes: a first coupling portion (151) coupled to the upper frame; a second coupling portion (152) coupled to the lower frame; and an extendable member coupled to the first and second coupling portions to increase or decrease a gap between the first and second coupling portions. [6] The vibration-proof apparatus of a floating track according to claim 5, wherein the extendable member is configured with a bolt having one end fixed to one of the first and second coupling portions (151, 152) and the other end coupled with a nut in a groove at the other of the first and second coupling portions (151, 152) such that the extendable member increases or decreases its length by means of screwing operation.