Resistance-increasing and noise-reducing structure of through channel

Abstract

The invention discloses a through channel resistance increasing and noise reducing structure which is arranged on a folding shed assembly of an existing through channel and comprises a flexible resistance increasing pipe, a flexible sound absorbing pipe and a fixing clamp assembly. The flexible resistance-increasing pipes are laid in the first direction, and first hook-and-loop fasteners extending in the second direction are arranged on the two sides of each flexible resistance-increasing pipe; the flexible sound absorption pipes are arranged in the corresponding flexible resistance increasing pipes, and at least two sound insulation cavities are formed by the flexible sound absorption pipes and the flexible resistance increasing pipes. The fixing clamp assemblies are arranged between the adjacent flexible resistance increasing pipes, and second hook-and-loop fasteners extending in the second direction are arranged on the two sides of each fixing clamp assembly. The flexible resistance increasing pipe and the fixing clamp assembly can be rapidly connected or separated through the first hook-and-loop fastener and the second hook-and-loop fastener. The through channel resistance increasing and noise reducing structure is convenient and rapid to mount and dismount, can be adaptively mounted on various existing through channels, facilitates modification of the existing through channels, and is low in cost; the sound insulation structure and the sound absorption material are combined, so that noise during running of the existing through channel is effectively reduced, and the sound insulation performance of the through channel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail train technology, in particular to a through passage resistance increasing and noise reducing structure. BACKGROUND

[0002] The through passage is generally used between urban rail trains, motor trains and other vehicles to provide a safe passage for passengers, has the functions of sealing, windproof, waterproof, sound insulation and heat insulation, and can realize the ability of train passing through small radius curves through its deformation ability.

[0003] Among them, the folding shed composition as the main component of the through passage is mainly composed of a folding shed composed of multi-ring shed cloth and an aluminum profile clamping frame, and an end frame and other components. The folding shed composition realizes the ability of train running through small curves through the stretching and compression deformation of each ring shed cloth, and generally optimizes the structure of the folding shed to improve the sound insulation and air tightness of the through passage. Since the through passage area between trains is a weak area of sound insulation and air tightness of the whole vehicle, external wheel-rail noise and other noises are easily transmitted from the through passage area into the vehicle during train operation, and the through passage itself is a movable component. During train operation, the stretching and compression of the folding shed structure will also produce certain noise.

[0004] The existing through passage between urban rail trains, metro trains or railway passenger cars generally adopts a crescent structure, or a wave structure with inner and outer folding sheds, or an "O" wave structure on both sides and the upper structure of the folding shed composition. The bottom of the folding shed composition is generally double-layer shed cloth, or an additional sound insulation pipe is sewn, that is, the existing through passage improves the sound insulation performance of the through passage by optimizing and changing the structure of the folding shed composition itself. However, the optimization of the folding shed composition structure can only be applied to new through passages, and replacing the folding shed composition to improve the sound insulation performance of the existing train through passage is not only difficult to operate, but also high in cost.

[0005] In addition, due to the small sound insulation cavity at the bottom of the folding shed composition (see Figure 1 ) of the existing through passage, the sound insulation performance is relatively low, and the aluminum profile clamping frame is only connected by the shed cloth, and the longitudinal damping between the multi-ring shed cloth is low. During train operation, the clamping frame is easy to collide with the end frame or each other, and the shed cloth is also easy to longitudinally rub and produce abnormal noise or wear, causing damage and noise problems in the through passage area. SUMMARY

[0006] The purpose of the present application is to provide a through passage resistance increasing and noise reducing structure which can be conveniently installed on the folding shed composition of the existing through passage to improve the sound insulation performance and reduce the noise of the rail train operation.

[0007] The purpose of the present application is achieved by the following technical solution: A through passage resistance increasing and noise reducing structure is arranged on the folding shed composition of the existing through passage, comprising: Flexible resistance pipe arranged in a first direction, two sides of the flexible resistance pipe are provided with first magic tape extending in a second direction; Flexible sound absorption pipe arranged in the flexible resistance pipe and forming at least two sound insulation cavities with the flexible resistance pipe; Fixed clip assembly arranged between adjacent flexible resistance pipes, two sides of the fixed clip assembly are provided with second magic tape extending in the second direction; Wherein, the flexible resistance pipe and the fixed clip assembly can be quickly connected or separated through the first and second magic tapes.

[0008] In an optional solution, the flexible resistance pipe comprises inverted U-shaped outer rubber cloth and U-shaped inner rubber cloth; wherein, the outer rubber cloth and the inner rubber cloth are oppositely opened, partially overlapped and connected as an elliptical pipe structure through sewing thread. In an optional solution, the outer rubber cloth has connecting sections extending beyond the inner rubber cloth on two sides, and the first magic tape is fixed on the outer surface of the connecting sections.

[0009] In an optional solution, the distance from the top end of the outer rubber cloth to the bottom end of the inner rubber cloth is 66-76mm.

[0010] In an optional solution, the flexible sound absorption pipe is a sound absorption cloth pipe with fireproof capability, and the flexible sound absorption pipe is sewn at a middle position in the flexible resistance pipe.

[0011] In an optional solution, the number of sound insulation cavities is three, including an elliptical sound insulation cavity in the flexible sound absorption pipe and a crescent sound insulation cavity above and below the elliptical sound insulation cavity.

[0012] In an optional solution, the fixed clip assembly comprises rubber clips fixed on the clamping frame formed by the folding shed, the rubber clips are arranged in the second direction and integrated with the second magic tape.

[0013] In an optional solution, the inner wall of the rubber clip is provided with anti-loosening protrusions on two sides.

[0014] In an optional solution, the number of flexible resistance pipes is 6-9.

[0015] In an optional solution, the flexible resistance pipe is configured to improve the anti-deformation capability of the folding shed and increase the longitudinal resistance between each ring shed cloth.

[0016] Compared with the prior art, the beneficial effects of the present application at least include: 1. Easy and fast installation and disassembly, capable of being installed in various existing through channels, facilitating the modification of existing through channels, and low cost.

[0017] 2、Through the combination of sound insulation structure and sound absorption material, the noise during the operation of the existing through passage is effectively reduced, and the sound insulation performance of the through passage is improved.

[0018] 3、The anti-deformation ability of the folding shed assembly is greatly improved, and the longitudinal resistance between the shed cloths of each ring is increased, thereby reducing the noise and improving the service life of the folding shed assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the folding shed assembly of the existing through passage.

[0020] Figure 2 is a schematic diagram of the through passage resistance increasing and noise reducing structure of the present application.

[0021] Figure 3 is a schematic diagram of the connection structure of the flexible resistance increasing pipe and the flexible sound absorption pipe.

[0022] Figure 4 is a sectional structure schematic diagram of Figure 3 .

[0023] Figure 5 is a structural schematic diagram of the fixed clamp assembly.

[0024] Figure 6 is a schematic diagram of the through passage resistance increasing and noise reducing structure of the present application installed on the folding shed assembly of the existing through passage.

[0025] Figure 7 is a sectional structure schematic diagram of Figure 6 .

[0026] In the figure: 1, flexible resistance increasing pipe; 11, outer rubber cloth; 111, connection section; 12, inner rubber cloth; 13, first magic tape; 2, flexible sound absorption pipe; 3, fixed clamp assembly; 31, rubber clamp; 311, anti-loose protrusion; 32, second magic tape; 4, sound insulation cavity; 5, folding shed assembly; 51, shed cloth; 52, clamping frame; 53, end frame; 6, sewing thread. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will be simplified or omitted.

[0028] The expression position and direction described in the present application are illustrated by taking the drawings as an example, but changes can also be made according to needs, and the changes are included in the protection scope of the present application.

[0029] As background, Figure 1 The schematic diagram of the existing through passage shed composition 5 is shown, and the bottom sound insulation cavity of the existing through passage shed composition 5 is small, and the sound insulation performance is low. In addition, the shed cloth 51 is only connected between the clamping frames 52, and the longitudinal damping between the multiple shed cloths 51 is low, which leads to abnormal noise and / or wear and tear of the shed composition 5 during the train running process, such as curve and train traction or braking process, thereby reducing the service life.

[0030] For the convenience of understanding, the following directions are defined as follows: the first direction is consistent with the length direction of the existing through passage shed composition 5, and the second direction is consistent with the width direction of the existing through passage shed composition 5.

[0031] Referring to Figure 6 and Figure 7 shown, the present application installs a detachable resistance increasing and noise reducing structure on the existing through passage shed composition 5, so as to improve the sound insulation performance of the existing through passage, thereby reducing the noise during the operation of the existing through passage, and cooperating with the special disassembly design, greatly facilitating the operation of the existing through passage reconstruction, and having the advantage of low cost.

[0032] Referring to Figures 2 to 5 shown, the through passage resistance increasing and noise reducing structure of the present application comprises a flexible resistance increasing pipe 1, a flexible sound absorbing pipe 2 and a fixing clamp assembly 3.

[0033] The flexible resistance increasing pipe 1 is arranged along the first direction, and specifically can be installed in each ring shed cloth 51 of the shed composition 5, and the two sides of the flexible resistance increasing pipe 1 are provided with first magic tapes 13 extending along the second direction, which are used for connecting with the fixing clamp assembly 3. The flexible sound absorbing pipe 2 is arranged in the corresponding flexible resistance increasing pipe 1 and forms at least two sound insulation cavities 4 with the flexible resistance increasing pipe 1, and the flexible sound absorbing pipe 2 itself has good sound absorbing capacity, which can weaken the transmission of noise, and at the same time, it is also used for separating the inner cavity of the flexible resistance increasing pipe 1, so as to form a plurality of sound insulation cavities 4 in the vertical direction, thereby further enhancing the sound insulation performance. The fixing clamp assembly 3 is interposed between the adjacent flexible resistance increasing pipes 1, and specifically can be installed on each clamping frame 52 of the shed composition 5, and the two sides of the fixing clamp assembly 3 are provided with second magic tapes 32 extending along the second direction, which are used for connecting with the flexible resistance increasing pipe 1.

[0034] During installation, according to the number of rings and size of the existing through passage shed composition 5, the corresponding flexible resistance pipe 1, flexible sound absorption pipe 2 and fixing clamp assembly 3 are selected. The fixing clamp assembly 3 is installed on each clamping frame 52 of the shed composition 5, and the flexible resistance pipe 1 (with the flexible sound absorption pipe 2 built-in) is installed in each ring shed cloth 51 of the shed composition 5. Through the cooperation of the first magic tape 13 and the second magic tape 32, they can be quickly connected together, so as to realize the quick installation of the through passage resistance and noise reduction structure. Generally, the through passage resistance and noise reduction structure is installed at the bottom of the shed composition 5, and can also be installed at the side, i.e. the upper part, according to the existing through passage shed composition 5, and the specific position is not limited.

[0035] It is worth noting that, since the flexible resistance pipe 1 and the fixing clamp assembly 3 are connected by magic tape, each flexible resistance pipe 1 can be separated individually, that is, the through passage resistance and noise reduction structure can contain different numbers of flexible resistance pipes 1, so as to adapt to different existing through passage shed compositions 5. For example, in this application, the number of flexible resistance pipes 1 is 6 to 9, so as to better adapt to the shed composition 5 with 6, 7, 8 or 9 ring shed cloths 51 commonly used in urban rail transit.

[0036] It can be understood that the flexible resistance pipe 1 itself has a certain sound insulation capacity in the above structure, and after the flexible sound absorption pipe 2 is built-in, the sound insulation and sound absorption capacity of the combined pipe body is further enhanced, so as to effectively improve the sound insulation performance of the existing through passage and reduce noise pollution.

[0037] On the other hand, since the combined pipe body itself is flexible and has a certain elasticity, after being fixed on the shed assembly by the fixing clamp assembly 3, it can greatly improve the anti-deformation ability of the shed composition 5 and increase the longitudinal resistance between each ring shed cloth 51 without affecting the movement performance of the train (i.e. the maximum stretching / compression of the flexible resistance pipe 1 meets the curve passing requirement). Specifically, the flexible resistance pipe 1 filled in each ring shed cloth 51 can avoid the noise caused by the direct rigid contact between the clamping frames 52 due to compression, and at the same time increase the resistance between each ring shed cloth 51 of the shed composition 5, reduce the noise and / or wear caused by longitudinal friction or collision with the end frame 53.

[0038] In summary, the through passage resistance and noise reduction structure has the advantages of convenient and quick installation and disassembly, and can be adapted to various existing through passages. Compared with the overall replacement after optimizing the structure of the shed composition 5, the modification operation is convenient and the cost is lower. In addition, the combination design of the flexible resistance pipe 1 and the flexible sound absorption pipe 2 further enhances the sound insulation and sound absorption effect, and also reduces the noise and wear generated by the existing through passage itself, effectively improves the sound insulation performance and service life of the existing through passage.

[0039] Referring to Figure 3 and Figure 4As shown, in some embodiments, the flexible resistance tube 1 comprises an outer layer of rubber cloth 11 in the shape of an inverted U and an inner layer of rubber cloth 12 in the shape of a normal U. The outer layer of rubber cloth 11 and the inner layer of rubber cloth 12 are oppositely open, partially overlap and are connected into an elliptical tube structure by sewing thread 6. The flexible resistance tube 1 made of rubber cloth can significantly increase the friction between it and the shed cloth 51 of the shed assembly 5, thereby increasing the longitudinal resistance. The elliptical tube structure makes the flexible resistance tube 1 have good deformation resistance and can meet the stretching / compression action requirements of the shed cloth 51. In particular, the overlapping and sewing design of the double U-shaped rubber cloth can adjust the size of the flexible resistance tube 1 by adjusting the position of the sewing thread 6 to increase or decrease the size of the flexible resistance tube 1, so as to meet the installation requirements of the through passage of other platform trains without affecting the movement performance.

[0040] In addition, the outer layer of rubber cloth 11 has a connecting section 111 extending beyond the inner layer of rubber cloth 12 on both sides, which increases the contact area and facilitates the fixation of the magic tape. In the present application, the first magic tape 13 is fixed (for example, by sewing) on the outer surface of the connecting section 111.

[0041] In some embodiments, the distance from the top end of the outer layer of rubber cloth 11 to the bottom end of the inner layer of rubber cloth 12 is 55-85 mm, preferably 66-76 mm. In the present application, the distance from the top end of the outer layer of rubber cloth 11 to the bottom end of the inner layer of rubber cloth 12 can be adjusted by the sewing thread 6 to meet the working conditions of the through passage of most standard urban rail trains and ensure that the flexible resistance tube 1 is installed in the existing through passage of common urban rails without affecting the movement performance.

[0042] As an example, in the shed assembly 5 of the current standard urban rail train, for a 9-ring shed cloth, a distance of 66 mm is more suitable, and in a 6-ring shed cloth, the distance must be increased to 76 mm to meet the curve passing requirements. In addition, for the through passage of a railway passenger car or a special through passage, although it is also a 6-ring shed cloth, the distance from the top end of the outer layer of rubber cloth 11 to the bottom end of the inner layer of rubber cloth 12 may be increased to 80 mm or more.

[0043] In some embodiments, the flexible sound-absorbing tube 2 is a sound-absorbing velvet tube with fireproof capability and is sewn at a middle position in the flexible resistance tube 1. In the present application, the tube is made of porous loose velvet with high fireproof requirements and has strong sound-absorbing capability, which can effectively absorb external noise in the tube passage.

[0044] Preferably, as Figure 4As shown, the number of sound insulation cavities 4 is three, including the elliptical sound insulation cavity in the flexible sound absorption pipe 2 and the crescent-shaped sound insulation cavities above and below it. By increasing the number of sound insulation cavities 4 and cooperating with the sound absorption effect, when noise is transmitted to the through channel, it needs to break through the inner rubber cloth 12, the crescent-shaped sound insulation cavity below, the flexible sound absorption pipe 2, the elliptical sound insulation cavity, the flexible sound absorption pipe 2, the crescent-shaped sound insulation cavity above, and the outer rubber cloth 11 in sequence. During this period, sound waves are reflected / refracted / scattered and absorbed, causing energy to gradually lose, thereby effectively ensuring the sound insulation performance of the through channel.

[0045] Referring to Figure 5 and Figure 7 As shown, in some embodiments, the fixed clip assembly 3 includes rubber clips 31 fixed on the clamping frame 52 of the folding shed component 5, which are arranged in the second direction and integrated with the second magic tape 32 (for example, in a sewing manner). In this application, the number of rubber clips 31 is at least two to ensure the fixing effect with the clamping frame 52 and evenly distribute the force on the second magic tape 32, ensuring the reliability after installation.

[0046] Preferably, the inner wall of the rubber clip 31 is provided with an anti-loose protrusion 311 on both sides, which can be embedded in the notch on the clamping frame 52 of the folding shed component 5 to improve the fixing effect after the installation of the rubber clip 31.

[0047] Preferably, the second magic tape 32 is a back-glued magic tape, which can be adhered to the inside of the folding shed component 5 through back-gluing after the rubber clip 31 is fixed on the clamping frame 52 of the folding shed component 5, to further improve the reliability of the rubber clip 31 and the stability of its own position.

[0048] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments without departing from the principles and purposes of the present application within the scope of the present application. All these changes should be within the protection scope of the claims of the present application.

Claims

1. A through-channel resistance-increasing and noise-reducing structure, characterized in that, The folding canopy (5) is installed on the existing through passageway and includes: A flexible resistance-enhancing tube (1) is laid out along a first direction, and first Velcro straps (13) extending along a second direction are provided on both sides of the flexible resistance-enhancing tube (1). A flexible sound-absorbing tube (2) is disposed inside the corresponding flexible resistance-increasing tube (1) and forms at least two sound-insulating cavities (4) therewith. A fixing clip assembly (3) is disposed between adjacent flexible resistance tubes (1), and second Velcro straps (32) extending in the second direction are provided on both sides of the fixing clip assembly (3). The flexible resistance tube (1) and the fixing clamp assembly (3) can be quickly connected or separated by the first and second Velcro straps (32).

2. The through-channel resistance-increasing and noise-reducing structure according to claim 1, characterized in that, The flexible resistance-increasing tube (1) includes an inverted U-shaped outer rubber cloth (11) and an upright U-shaped inner rubber cloth (12); wherein the outer rubber cloth (11) and the inner rubber cloth (12) have openings facing each other, and the two partially overlap and are connected by a sewing thread to form an elliptical tube structure.

3. The through-channel resistance-increasing and noise-reducing structure according to claim 2, characterized in that, The outer rubber sheet (11) has connecting sections (111) on both sides that extend beyond the inner rubber sheet (12), and the first Velcro (13) is fixed to the outer surface of the connecting section (111).

4. The through-channel resistance-increasing and noise-reducing structure according to claim 2, characterized in that, The distance from the top of the outer rubber sheet (11) to the bottom of the inner rubber sheet (12) is 66mm-76mm.

5. The through-channel resistance-increasing and noise-reducing structure according to claim 1, characterized in that, The flexible sound-absorbing tube (2) is a fire-resistant sound-absorbing velvet tube, and the flexible sound-absorbing tube (2) is sewn into the middle position inside the flexible resistance-increasing tube (1).

6. The through-channel resistance-increasing and noise-reducing structure according to claim 5, characterized in that, There are three sound insulation cavities (4), including an elliptical sound insulation cavity in the flexible sound-absorbing tube (2) and a crescent-shaped sound insulation cavity located above and below it.

7. The through-channel resistance-increasing and noise-reducing structure according to claim 1, characterized in that, The fixing clamp assembly (3) includes rubber clips (31) fixed on the clamping frame (52) of the folding assembly (5), the rubber clips (31) being arranged at intervals along the second direction and connected to the second Velcro (32).

8. The through-channel resistance-increasing and noise-reducing structure according to claim 7, characterized in that, The rubber clamp (31) has anti-loosening protrusions (311) on both sides of its inner wall.

9. The through-channel resistance-increasing and noise-reducing structure according to claim 1, characterized in that, The number of the flexible resistance-enhancing tubes (1) is 6 to 9.

10. The through-channel resistance-increasing and noise-reducing structure according to any one of claims 1-9, characterized in that, The flexible resistance tube (1) is configured to enhance the deformation resistance of the folded shed assembly (5) and increase the longitudinal resistance between each ring of the shed fabric (51).

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