Monolithic ballast bed acoustic panel limiting structure

Abstract

The utility model relates to a monolithic track bed acoustic panel limiting structure, which belongs to the technical field of rail transit engineering, and comprises a limiting piece and a limiting baffle plate, the limiting piece comprises a fixing plate and a limiting plate, the fixing plate comprises a rectangular part and two bending parts, the two bending parts are respectively positioned at the front side edge and the rear side edge of the rectangular part, and the limiting baffle plate is positioned on the rectangular part. The bending part and the rectangular part form a structure with an n-shaped section, the limiting plate is connected to the left side or the right side of the rectangular part, blocking tables are arranged on the edges of the left side and the right side of the sound absorption plate, the limiting plate abuts against the blocking tables to fix and limit the sound absorption plate, the fixing plate is fixed to a sleeper, the limiting baffle extends transversely, and the two ends of the limiting baffle are fixed to the sleeper. According to the utility model, the sound-absorbing plate is limited in all directions under the combined action of the limiting piece and the limiting baffle, so that the sound-absorbing plate can be prevented from sliding and shaking in the longitudinal direction, the transverse direction and the vertical direction, and the problem of mounting and fixing the sound-absorbing plate of the monolithic track bed of a long sleeper or a double-block type sleeper is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of rail transit engineering, and concretely relates to a structure for fixing and limiting a sound-absorbing plate of a track bed. BACKGROUND

[0002] Noise generated by rail transit can seriously affect the life of residents along the line, so in the field of rail transit, noise must be reduced by a noise reduction device to avoid affecting the life of residents along the line. As an effective technical measure for reducing wheel-rail noise, a sound-absorbing plate for a railway track has been applied in rail transit at home and abroad.

[0003] Currently, sound-absorbing plates for urban rail transit are usually applied to ladder-type sleepers, short-sleeper center-gutter type monolithic track beds. The traditional sound-absorbing plate is usually arranged in a concrete groove in the middle of the ladder-type sleeper or the short-sleeper center-gutter type monolithic track bed, and the installation position is lower than the upper surface of the monolithic track bed, and the longitudinal and transverse positions are provided by the structure of the monolithic track bed itself.

[0004] Since the short-sleeper center-gutter type monolithic track bed has poor control over the geometric state of the track, it has been less used. The middle part of the long-sleeper or double-block sleeper monolithic track bed cannot adopt a concave structure, and the sound-absorbing plate can only be installed on the upper surface of such a track bed. The track bed cannot provide effective limiting for the sound-absorbing plate, which limits the use range of the sound-absorbing plate and is not conducive to suppressing the propagation of wheel-rail noise of urban rail transit.

[0005] Therefore, it is necessary to develop a sound-absorbing plate limiting structure suitable for the long-sleeper or double-block sleeper monolithic track bed to expand the use range of the track bed sound-absorbing plate and further reduce the influence of urban rail transit wheel-rail noise on the surrounding environment. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a monolithic track bed sound-absorbing plate limiting structure to improve the above-mentioned problems existing in the prior art. In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A monolithic track bed sound-absorbing plate limiting structure, characterized in that it comprises a limiting piece and a limiting baffle, the limiting piece comprises a fixed plate and a limiting plate, the fixed plate comprises a rectangular part and two bent parts, the two bent parts are respectively located at the front and rear edges of the rectangular part, the bent part and the rectangular part form a structure with a door-shaped cross section, the limiting plate is connected to the left side or the right side of the rectangular part, the left and right side edges of the sound-absorbing plate are provided with a stop table, the limiting plate is abutted on the stop table to fix and limit the sound-absorbing plate, and the fixed plate is fixed on the sleeper.

[0008] The utility model has the following beneficial effects:

[0009] The utility model discloses a limiting piece and limiting baffle, limiting piece includes a fixed plate and a limiting plate, and the fixed plate is fixed on the sleeper, and the limiting plate is fixed on the fixed plate, so the limiting plate is fixed on the sleeper, and then sets up the blocking table in the left and right sides of the sound absorption board, and the left and right sides of the sound absorption board are fixed on the sleeper through the cooperation of the limiting plate and the blocking table, and the limiting plate limits the vertical and horizontal of the sound absorption board.

[0010] Other features and advantages of the present application will be further described in the following description, and become apparent from the description, or be understood through implementation of the embodiments of the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0012] Figure 1 The structure diagram for limiting the sound absorption board of the present application is shown in the figure.

[0013] Figure 2 The top view of the present application is shown in the figure. Figure 1

[0014] Figure 3 The structure diagram of the limiting piece of embodiment 1 is shown in the figure.

[0015] Figure 4 The structure diagram of the limiting piece of embodiment 2 is shown in the figure.

[0016] Figure 5 The structure diagram of the limiting piece of embodiment 3 is shown in the figure.

[0017] Figure 6 The structure diagram of the limiting baffle is shown in the figure. ​

[0018] Figure 7 For Figure 6 The enlarged structure schematic view is shown at A in the figure.

[0019] The figure is marked: 1, limiting piece; 10, fixed plate; 100, rectangular part; 101, bending part; 102, door-shaped groove; 11, limiting plate; 110, convex strip; 2, limiting baffle; 20, rectangular plate; 21, vertical baffle; 210, convex rib; 22, horizontal baffle; 3, sound absorption plate; 30, blocking table; 4, sleeper; 5, track bed; 6, threaded hole; 7, screw rod; 8, pressing plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0021] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the utility model, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0022] The utility model provides a kind of sound absorption plate limiting structure of integral track bed for the technical problem that the middle part of the integral track bed of existing long sleeper or double-block sleeper cannot adopt concave structure to install sound absorption plate 3, and the limiting structure includes limiting piece 1 and limiting baffle 2, limiting piece 1 is carried out vertical and horizontal limiting to sound absorption plate 3, limiting baffle 2 is carried out longitudinal limiting to sound absorption plate 3, under the cooperation of both, it can also limit and fix sound absorption plate 3 in the middle part of the integral track bed of existing long sleeper or double-block sleeper cannot adopt concave structure.The utility model is described in detail as follows in combination with specific embodiment.

[0023] Embodiment 1

[0024] As Figure 1As shown, the present embodiment provides a whole track bed sound absorbing plate limiting structure, including limiting piece 1 and limiting baffle 2, limiting piece 1 is fixed on the left and right sides of the sleeper 4, in the figure, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical. Figure 1 The left and right directions in the figure, the front and back directions in the figure, and the up and down directions in the figure. Figure 1 The left and right directions in the figure, the front and back directions in the figure, and the up and down directions in the figure. Figure 1 The left and right directions in the figure, the front and back directions in the figure, and the up and down directions in the figure.

[0025] As shown in the figure, Figure 1 The track bed 5 is laid with sleepers 4, and the middle position of the sleeper 4 is installed on the sound absorbing plate 3, and the sound absorbing plate 3 is fixed on the sleeper 4 through the limiting piece 1 and the limiting baffle 2.

[0026] As shown in the figure, Figure 2 A plurality of sleepers 4 are laid in the longitudinal direction on the track bed 5, the limiting baffle 2 is installed on the frontmost sleeper 4, the limiting baffle 2 is fixed on the sleeper 4 through the M8 sleeve of the pre-set sleeper 4 in front of the track bed 5 expansion joint, the limiting baffle 2 extends horizontally, and the two ends are fixed on the sleeper, so as to limit the longitudinal movement of the sound absorbing plate 3. After the limiting baffle 2 is fixed, the front side of the first sound absorbing plate 3 is abutted on the limiting baffle 2, then the second sound absorbing plate 3 is abutted on the rear side of the first sound absorbing plate 3, the left and right sides of the second sound absorbing plate 3 are fixed by the limiting piece 1, the third sound absorbing plate 3 is abutted on the second sound absorbing plate 3, the left and right sides of the third sound absorbing plate 3 are fixed by the limiting piece 1, and the left and right sides of the third sound absorbing plate 3 are fixed by the limiting piece 1. In this way, the left and right sides of the sound absorbing plate 3 are fixed by the limiting piece 1, and the rear side of the last sound absorbing plate 3 is fixed by the limiting baffle 2. That is, the left and right sides of the sound absorbing plate 3 in the middle are fixed by the limiting piece 1, the sound absorbing plate 3 at the first and last positions is fixed by the limiting baffle 2, and the number of the middle sound absorbing plate 3 is determined according to the specific circumstances. The sound absorbing plate 3 will not move longitudinally. Generally, the number of sound absorbing plates is 8-10, which is beneficial. If the number is too large, it will shake, and if the number is too small, it will not be convenient to disassemble and install, and it will also increase the installation cost and installation time. Through the action of the limiting baffle 2, the plurality of sound absorbing plates 3 are limited to form a whole, for example, 8 sound absorbing plates 3 are installed, which is equivalent to connecting 8 sound absorbing plates 3 to form a whole. The whole interacts with each other, and is pressed against each other, so as to realize the horizontal, vertical and longitudinal limiting of the whole sound absorbing plate 3. The plurality of sound absorbing plates 3 are divided into a plurality of modules, if a module of sound absorbing plate 3 is damaged, only the sound absorbing plate in the module needs to be replaced, which does not affect the installation and disassembly of other sound absorbing plates 3, so as to facilitate daily maintenance and maintenance.

[0027] As shown in the figure, Figure 3As shown, the limiting member 1 includes a fixing plate 10 and a limiting plate 11. The fixing plate 10 has a U-shaped cross-section, specifically including a rectangular portion 100 and two bent portions 101. The two bent portions 101 are located on the front and rear edges of the rectangular portion 100, respectively, and the rectangular portion 100 and the bent portions 101 are perpendicular to each other. The rectangular portion 100 and the bent portions 101 can be separately formed and then welded together, or they can be integrally formed. The groove formed between the rectangular portion 100 and the bent portions 101 is a U-shaped groove 102. The width of the U-shaped groove 102 is the width of the sleeper 4. After the fixing plate 10 is installed on the sleeper 4, the sleeper 4 is accommodated in the U-shaped groove 102. The bottom surface of the rectangular portion 100 abuts against the top surface of the sleeper 4, and the inner side surface of the bent portions 101 abuts against the front and rear sides of the sleeper 4. The bent part 100 is provided with threaded holes 6, and the sleeper 4 is also provided with threaded holes. By the cooperation of bolts with threaded holes 6, the fixing plate 10 is fixed to the front and rear sides of the sleeper 4. Of course, it can also be fixed in other ways, as long as the fixing plate 10 can be fixed to the sleeper 4.

[0028] The limiting plate 11 is fixed on the left or right side of the rectangular part 100. The width of the limiting plate 11 can be greater than the width of the rectangular part 100, less than the width of the rectangular part 100, or equal to the width of the rectangular part 100. The length should protrude from the rectangular part 100. The limiting plate 11 can overlap the rectangular part 100 and then be welded to the rectangular part 100. Of course, the limiting plate 11 and the rectangular part 100 can also be integrally formed.

[0029] The limiting plate 11 and the fixing plate 10 cooperate to form an L-shaped limiting space. The sound-absorbing plate 3 is provided with baffles 30 on the left and right sides. The thickness, width and length of the baffles 30 are adapted to the L-shaped limiting space. After the fixing plate 10 is fixed on the sleeper 4, the L-shaped limiting space is also fixed. Since the thickness, width and length of the baffles 30 are adapted to the L-shaped limiting space, after the sound-absorbing plate 3 is fixed, the baffles 30 are accommodated in the L-shaped limiting space. In this way, the sound-absorbing plate 3 completes the limiting action in the horizontal and vertical directions, and the sound-absorbing plate 3 cannot move or shake in the horizontal and vertical directions.

[0030] The limiting piece 1 and the limiting baffle 2 in the embodiment have a very simple structure, are easy to process, are economical and practical, and are simple and convenient to install. The structure of the sound absorption plate 3 is extended and applied to the overall track bed of the long sleeper or double-block sleeper, expands the use range of the sound absorption plate 3, reduces the influence of the wheel-rail noise of the urban rail transit on the surrounding environment, promotes the application of the green construction technology, and provides a strong support for building a harmonious and livable urban living environment. The installation and fixing problem of the sound absorption plate of the overall track bed of the long sleeper or double-block sleeper is solved, the sliding and shaking are avoided, and the driving safety is affected. The limiting structure itself meets the structure reliability, the limiting structure meets the structure strength of the overall track bed and does not invade the driving limit. The sound absorption plate meets the requirements of easy disassembly and assembly, and the track bed maintenance or installation of other equipment is convenient for the work personnel. The structure is simple, and the sound absorption plate can be directly applied to the newly-built line or used on the existing line through simple modification, and is easy to popularize and apply.

[0031] Embodiment 2

[0032] As shown in Figure 4 The embodiment is an optimization of the embodiment, and other structures are the same, except that the limiting plate 11 is provided with a protruding strip 110, and the corresponding position of the retaining table 30 of the sound absorption plate 3 is provided with a groove. After the limiting plate 11 abuts against the retaining table 30, the protruding strip 110 is located in the groove.

[0033] Through the cooperation of the protruding strip 110 of the limiting plate 11 and the groove on the retaining table 30, the first is to play a positioning role, which is convenient for installation, and the second is that after the protruding strip 110 is located in the groove, the horizontal and vertical limiting can be further realized, the limiting force is further provided, the limiting plate 11 is assisted to be horizontally limited, and the limiting baffle 2 is assisted to be vertically limited. The number and size of the protruding strip 110 and the groove correspond to each other, and the specific number is not limited.

[0034] Embodiment 3

[0035] The embodiment is a further optimization of the embodiments 1 and 2, and the purpose is to realize the up-down sliding of the limiting plate 11 on the fixing plate 10. The purpose is to adjust the size of the L-shaped limiting space, so as to meet the installation requirements of different types of sound absorption plates 3. The size of the retaining table 30 and the L-shaped limiting space are not strictly required, and the processing and manufacturing of the sound absorption plate 3 are facilitated. The following mode can be used to realize the following mode:

[0036] As shown in Figure 5As shown, threaded holes 6 are arranged on the fixing plate 10, the threaded holes 6 pass through the fixing plate 10, threaded rods 7 are installed in the threaded holes 10, the bottom of the threaded rods 7 is provided with a pressing plate 8, a limiting plate 11 is slidingly installed on the fixing plate 10, the limiting plate can slide up and down along the fixing plate, and the limiting plate is located below the pressing plate 8. When the sound-absorbing plate 3 is installed, the retaining table 30 of the sound-absorbing plate 3 is placed below the limiting plate 11, then the threaded rods 7 are rotated to drive the pressing plate 8 to move downward through the fixing plate 10, and the pressing plate 8 presses the limiting plate 7 on the retaining table 30 by rotating the threaded rods 7, so that the retaining table 30 is vertically and horizontally limited.

[0037] In order to prevent the limiting plate 11 from limiting the sound-absorbing plate 3 not firmly, threaded holes 6 are arranged on the limiting plate 11, threaded holes 6 are arranged on the retaining table 30 of the sound-absorbing plate 3, and the sound-absorbing plate 3 is fixed on the limiting plate 11 by bolts passing through the threaded holes 6 of the limiting plate 11 and the threaded holes 6 on the retaining table 30.

[0038] Embodiment 4

[0039] In this embodiment, the limiting baffle 2 is optimized, and the purpose is to fully limit the first sound-absorbing plate 3 and the last sound-absorbing plate 3 in a module vertically and horizontally, so as to prevent the sound-absorbing plate from being displaced and shaken vertically and horizontally.

[0040] As shown in Figure 6 The limiting baffle 2 includes a rectangular plate 20, a vertical baffle 21 and a horizontal baffle 22, the rectangular plate 20 extends horizontally, and the rectangular plate 20 is fixed at both ends of the rail tie 4. The vertical baffle 21 is fixed on the top surface of the left and right ends of the rectangular plate 20, and the horizontal baffle 22 is fixed on the inner side surface of the left and right ends of the rectangular plate 20.

[0041] The horizontal baffle 22 is perpendicular to the rectangular plate 20, the vertical baffle 21 is perpendicular to the rectangular plate 20, and the horizontal baffle 22 is perpendicular to the vertical baffle 21.

[0042] The horizontal baffle 22 is used to limit the sound-absorbing plate 3 horizontally, and two horizontal baffles form a horizontal limiting space, and the sound-absorbing plate 3 is located in the horizontal limiting space after installation, so as to limit the sound-absorbing plate horizontally. The vertical baffle 21 is used to limit the sound-absorbing plate 3 vertically, and the rectangular plate 20 is used to limit the sound-absorbing plate 3 longitudinally, so as to limit the first and last sound-absorbing plates 3 in a module.

[0043] Embodiment 5

[0044] As shown in Figure 6 and Figure 7As shown, the embodiment is an optimization of the vertical baffle 21 in Embodiment 4, and the vertical baffle 21 is provided with a convex rib 210, which is located in the groove of the blocking table 30 after abutting against the blocking table 30 of the sound-absorbing plate 3. Through the cooperation of the convex rib 210 and the groove of the sound-absorbing plate 3, the sound-absorbing plate 3 can be further limited in the horizontal and vertical directions.

[0045] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0046] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A limiting structure for an integral track bed sound-absorbing panel, characterized in that, The device includes a limiting component (1) and a limiting baffle (2). The limiting component (1) includes a fixing plate (10) and a limiting plate (11). The fixing plate (10) includes a rectangular part (100) and a bent part (101). The bent part (101) is located on the front and rear edges of the rectangular part (100). The bent part (101) and the rectangular part (100) form a door-shaped structure. The limiting plate (11) is connected to the left or right side of the rectangular part (100). The left and right edges of the sound-absorbing plate (3) are provided with baffles (30). The limiting plate (11) abuts against the baffles (30) to fix and limit the sound-absorbing plate (3). The limiting baffle (2) extends laterally and is fixed at both ends to the sleepers (5) of the track bed (4).

2. The integral track bed sound-absorbing panel limiting structure according to claim 1, characterized in that, The limiting plate (11) is provided with a protruding strip (110), and the corresponding position of the baffle (30) of the sound-absorbing plate (3) is provided with a groove. After the limiting plate (11) abuts against the baffle (30), the protruding strip (110) is located in the groove.

3. The integral track bed sound-absorbing panel limiting structure according to claim 1 or 2, characterized in that, The fixed plate (10) is provided with a threaded hole (6), which passes through the fixed plate (10). A screw (7) is installed in the threaded hole (6), and a pressure plate (8) is installed at the bottom of the screw (7). The limiting plate (11) is slidably installed on the fixed plate (10), and the limiting plate (11) can slide up and down along the fixed plate (10). The limiting plate (11) is located below the pressure plate (8).

4. The integral track bed sound-absorbing panel limiting structure according to claim 3, characterized in that, The limiting plate (11) is provided with a threaded hole (6), and the baffle (30) of the sound-absorbing plate (3) is provided with a threaded hole (6). The sound-absorbing plate (3) is fixed to the limiting plate (11) by bolts passing through the threaded hole (6) of the limiting plate (11) and the threaded hole (6) of the baffle (30).

5. The integral track bed sound-absorbing panel limiting structure according to claim 1, characterized in that, The limiting baffle (2) includes a rectangular plate (20), a vertical baffle (21) and a horizontal baffle (22). The rectangular plate (20) extends horizontally, the vertical baffle (21) is fixed on the top surface of the left and right ends of the rectangular plate (20), and the horizontal baffle (22) is fixed on the inner side surface of the left and right ends of the rectangular plate (20).

6. The integral track bed sound-absorbing panel limiting structure according to claim 5, characterized in that, The horizontal baffle (22) is perpendicular to the rectangular plate (20), the vertical baffle (21) is perpendicular to the rectangular plate (20), and the horizontal baffle (22) is perpendicular to the vertical baffle (21).

7. A limiting structure for an integral track bed sound-absorbing panel according to claim 5 or 6, characterized in that, The vertical baffle (21) is provided with a protruding ridge (210). After the vertical baffle (21) abuts against the baffle (30) of the sound-absorbing plate (3), the protruding ridge (210) is located in the groove of the baffle (30).

8. The integral track bed sound-absorbing panel limiting structure according to claim 1, characterized in that, There are multiple limiting baffles (2) and multiple limiting components (1). A limiting component (1) is installed on each of the left and right sides of the sound-absorbing plate (3). A limiting baffle (2) is installed on the front side of the first sound-absorbing plate (3) and a limiting baffle (2) is installed on the rear side of the last sound-absorbing plate (3).

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