CN215481990U - Novel urban rail transit composite vibration reduction system - Google Patents

Novel urban rail transit composite vibration reduction system Download PDF

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Publication number
CN215481990U
CN215481990U CN202120792072.XU CN202120792072U CN215481990U CN 215481990 U CN215481990 U CN 215481990U CN 202120792072 U CN202120792072 U CN 202120792072U CN 215481990 U CN215481990 U CN 215481990U
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China
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vibration damping
block
sleeper
polyurethane curing
curing block
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CN202120792072.XU
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Chinese (zh)
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徐旸
郄录朝
易强
王树国
杜香刚
余文颖
李录壮
韩宏洋
杨轶科
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China Academy of Railway Sciences Corp Ltd CARS
Railway Engineering Research Institute of CARS
China State Railway Group Co Ltd
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China Academy of Railway Sciences Corp Ltd CARS
Railway Engineering Research Institute of CARS
China State Railway Group Co Ltd
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Abstract

The utility model relates to a novel urban rail transit composite vibration damping system which comprises a sleeper, a first vibration damping system and a second vibration damping system, wherein the first vibration damping system and the second vibration damping system are respectively arranged on the lower surfaces of two end parts of the sleeper; the first damping system comprises a first polyurethane curing block and a first damping cushion layer, the first damping cushion layer is arranged on the lower surface of the first polyurethane curing block, and the first polyurethane curing block is arranged on the lower surface of one end of the sleeper; the second damping system comprises a second polyurethane curing block and a second damping cushion layer, the second damping cushion layer is arranged on the lower surface of the second polyurethane curing block, and the second polyurethane curing block is arranged on the lower surface of the other end of the sleeper; the first polyurethane curing block and the first damping cushion layer, and the second polyurethane curing block and the second damping cushion layer are of an integrated structure. According to the utility model, the composite vibration damping structure system has good integrity, lighter weight, outstanding economical efficiency and obvious vibration damping effect by gluing the polyurethane foam with the vibration damping cushion layer in the process of foaming.

Description

Novel urban rail transit composite vibration reduction system
Technical Field
The utility model relates to the field of rail engineering, in particular to a composite vibration damping system for rail transit.
Background
With the rapid development of rail transit in China, the problems of vibration and noise induced when a train runs are more and more prominent. When the train runs at a high speed, the track is induced to generate large vibration and noise, and meanwhile, the track vibration can react on the vehicle to cause the vehicle to vibrate. The vibration is a source of noise, and the purpose of reducing the noise can be achieved by reducing the vibration of the structure.
The existing structure of the sleeper of the main line railway has the problems of environmental vibration and noise pollution and poor integrity, and a novel urban rail transit composite vibration damping system is needed to solve the problems.
Disclosure of Invention
The utility model aims to solve the problems that the structure of the main line railway sleeper in the prior art has environmental vibration and noise pollution and poor integrity, provides a novel urban rail transit composite vibration damping system, and the composite vibration damping system is cemented with a vibration damping cushion layer in the polyurethane foaming process, so that the composite vibration damping structure system has good integrity, lighter weight, outstanding economy and obvious vibration damping effect, and solves the problems.
The utility model provides a novel urban rail transit composite vibration damping system which comprises a sleeper, a first vibration damping system and a second vibration damping system, wherein the first vibration damping system and the second vibration damping system are respectively arranged on the lower surfaces of two end parts of the sleeper; the first damping system comprises a first polyurethane curing block and a first damping cushion layer, the first damping cushion layer is arranged on the lower surface of the first polyurethane curing block, and the first polyurethane curing block is arranged on the lower surface of one end of the sleeper; the second damping system comprises a second polyurethane curing block and a second damping cushion layer, the second damping cushion layer is arranged on the lower surface of the second polyurethane curing block, and the second polyurethane curing block is arranged on the lower surface of the other end of the sleeper; the first polyurethane curing block and the first damping cushion layer are of an integrated structure; the second polyurethane curing block and the second damping cushion layer are of an integrated structure.
The composite damping structure system has the advantages that the polyurethane blocks are poured before the sleeper for urban rail transit leaves a factory and are glued with the damping cushion layer in the polyurethane foaming process, so that the composite damping structure system has good integrity, and the problems of falling, separation and dislocation of the polyurethane blocks and the damping cushion layer are solved well.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the vertical projection area of the first polyurethane curing block is smaller than that of the first vibration damping cushion layer.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the vertical projection area of the second polyurethane curing block is smaller than that of the second vibration damping cushion layer.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the first polyurethane curing block comprises a first curing block body and a first curing block track bed installation groove, the first curing block body is of a straight quadrangular prism structure, the first curing block track bed installation groove is of a rectangular groove structure communicated with one side, the first curing block track bed installation groove is formed in two adjacent surfaces of the first curing block body, and the side surface and the bottom surface of one end of a sleeper are arranged in the first curing track bed installation groove.
According to the novel urban rail transit composite vibration damping system, as a preferable mode, the second polyurethane curing block comprises a second curing block body and a second curing block track bed installation groove, the second curing block body is of a straight quadrangular prism structure, the second curing block track bed installation groove is of a rectangular groove structure communicated with one side, the second curing block track bed installation groove is formed in two adjacent surfaces of the second curing block body, and the side surface and the bottom surface of one end of the sleeper are arranged in the second curing track bed installation groove.
The sleeper has a length of 2195-2205 mm, a width of 255-265 mm and a height of 157-177 mm. Compared with the main line railway sleeper with the length of 2600mm, the width of 320mm and the height of 260mm, the sleeper is optimized, and the length of the sleeper used for urban rail transit is reduced by 400mm relative to the length of the main line railway sleeper. The sleeper is lighter and is beneficial to the laying and construction of the track. Correspondingly, the volume, the length, the width and the height of the polyurethane block are all reduced, the laying cost is reduced, and the economy is outstanding.
The utility model has the following beneficial effects:
compared with the structure of a main railway sleeper, the novel urban rail transit composite vibration damping system is lighter in weight, outstanding in economy and obvious in vibration damping effect. The environmental vibration and noise pollution generated in the running of the urban rail transit train are effectively reduced. The vibration radiation sound wave generated when the wheel contacts with the rail is weakened. The comfort of passengers of the urban rail transit train when taking the train and the environmental quality of life of surrounding residents are powerfully guaranteed.
Drawings
FIG. 1 is a schematic diagram of a novel urban rail transit composite damping system;
FIG. 2 is a schematic view of a first damping system of a novel urban rail transit composite damping system;
FIG. 3 is a schematic view of a second damping system of a novel urban rail transit composite damping system;
FIG. 4 is a schematic view of a first polyurethane curing block of the novel urban rail transit composite damping system;
FIG. 5 is a schematic view of a second polyurethane curing block of a novel urban rail transit composite damping system.
Reference numerals:
1. a sleeper; 2. a first damping system; 21. a first polyurethane cured block; 211. a first solidified block body; 212. a first solidified block ballast bed mounting groove; 22. a first vibration damping cushion layer; 3. a second damping system; 31. a second polyurethane cured mass; 311. a second solidified block body; 312. a second solidified block ballast bed mounting groove; 32. and a second damping cushion layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in figure 1, the novel urban rail transit composite damping system comprises a sleeper 1, a first damping system 2 and a second damping system 3, wherein the first damping system 2 and the second damping system 3 are respectively arranged on the lower surfaces of two end portions of the sleeper 1. The sleeper 1 has a length of 2195-2205 mm, a width of 255-265 mm and a height of 157-177 mm.
As shown in fig. 2, the first damping system 2 includes a first polyurethane cured block 21 and a first damping pad layer 22, the first damping pad layer 22 is disposed on a lower surface of the first polyurethane cured block 21, and the first polyurethane cured block 21 is disposed on a lower surface of one end of the sleeper 1.
As shown in fig. 3, the second damping system 3 includes a second polyurethane curing block 31 and a second damping pad layer 32, the second damping pad layer 32 is disposed on the lower surface of the second polyurethane curing block 31, and the second polyurethane curing block 31 is disposed on the lower surface of the other end of the sleeper 1; the first polyurethane curing block 21 and the first damping cushion layer 22 are of an integrated structure; the second polyurethane cured block 31 and the second cushion layer 32 are of an integrated structure.
The vertical projected area of the first polyurethane cured block 21 is smaller than the vertical projected area of the first vibration damping cushion layer 22.
The vertical projected area of the second solidified polyurethane block 31 is smaller than the vertical projected area of the second cushion layer 32.
As shown in fig. 4, the first polyurethane curing block 21 includes a first curing block body 211 and a first curing block track bed installation groove 212, the first curing block body 211 is a straight quadrangular prism structure, the first curing block track bed installation groove 212 is a rectangular groove structure with one side penetrating, the first curing block track bed installation groove 212 is grooved on two adjacent surfaces of the first curing block body 211, and one end side surface and the bottom surface of the sleeper 1 are arranged inside the first curing block track bed installation groove 212.
As shown in fig. 5, the second polyurethane curing block 31 includes a second curing block body 311 and a second curing block track bed mounting groove 312, the second curing block body 311 is a straight quadrangular prism structure, the second curing block track bed mounting groove 312 is a rectangular groove structure with one side penetrating, the second curing block track bed mounting groove 312 is grooved on two adjacent surfaces of the second curing block body 311, and the side surface and the bottom surface of one end of the sleeper 1 are arranged inside the second curing block track bed mounting groove 312.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (6)

1.一种新型城市轨道交通复合减振系统,其特征在于:包括轨枕(1)、第一减振系统(2)和第二减振系统(3),所述第一减振系统(2)和所述第二减振系统(3)分别设置于所述轨枕(1)两端部下表面;所述第一减振系统(2)包括第一聚氨酯固化块(21)和第一减振垫层(22),所述第一减振垫层(22)设置于所述第一聚氨酯固化块(21)下表面,所述第一聚氨酯固化块(21)设置于所述轨枕(1)一端下表面;所述第二减振系统(3)包括第二聚氨酯固化块(31)和第二减振垫层(32),所述第二减振垫层(32)设置于所述第二聚氨酯固化块(31)下表面,所述第二聚氨酯固化块(31)设置于所述轨枕(1)另一端下表面;所述第一聚氨酯固化块(21)和所述第一减振垫层(22)为一体化结构,所述第二聚氨酯固化块(31)和第二减振垫层(32)为一体化结构。1. A novel composite vibration damping system for urban rail transit, characterized in that: comprising a sleeper (1), a first vibration reduction system (2) and a second vibration reduction system (3), the first vibration reduction system (2) ) and the second damping system (3) are respectively arranged on the lower surfaces of the two ends of the sleeper (1); the first damping system (2) includes a first polyurethane curing block (21) and a first damping A cushion layer (22), the first vibration damping cushion layer (22) is arranged on the lower surface of the first polyurethane curing block (21), and the first polyurethane curing block (21) is arranged on the sleeper (1) The lower surface of one end; the second vibration damping system (3) includes a second polyurethane curing block (31) and a second vibration damping pad (32), and the second vibration damping pad (32) is arranged on the first The lower surface of the two polyurethane curing block (31), the second polyurethane curing block (31) is arranged on the lower surface of the other end of the sleeper (1); the first polyurethane curing block (21) and the first vibration damping The cushion layer (22) is an integrated structure, and the second polyurethane curing block (31) and the second vibration damping cushion layer (32) are an integrated structure. 2.根据权利要求1所述的一种新型城市轨道交通复合减振系统,其特征在于:所述第一聚氨酯固化块(21)的竖向投影面积小于所述第一减振垫层(22)的竖向投影面积。2. A novel composite vibration damping system for urban rail transit according to claim 1, characterized in that: the vertical projected area of the first polyurethane curing block (21) is smaller than that of the first vibration damping pad (22). ) of the vertical projected area. 3.根据权利要求1所述的一种新型城市轨道交通复合减振系统,其特征在于:所述第二聚氨酯固化块(31)的竖向投影面积小于所述第二减振垫层(32)的竖向投影面积。3. A new type of urban rail transit composite vibration damping system according to claim 1, characterized in that: the vertical projected area of the second polyurethane curing block (31) is smaller than the second vibration damping pad (32) ) of the vertical projected area. 4.根据权利要求1所述的一种新型城市轨道交通复合减振系统,其特征在于:所述第一聚氨酯固化块(21)包括第一固化块本体(211)和第一固化块道床安装槽(212),所述第一固化块本体(211)为直四棱柱结构,所述第一固化块道床安装槽(212)为单侧贯通的矩形槽结构,所述第一固化块道床安装槽(212)开槽在所述第一固化块本体(211)相邻的两表面,所述轨枕(1)一端侧面和底面设置在所述第一固化块道床安装槽(212)内部。4. A novel composite vibration damping system for urban rail transit according to claim 1, characterized in that: the first polyurethane solidified block (21) comprises a first solidified block body (211) and a first solidified block track bed installation A groove (212), the first solidified block body (211) is a right quadrangular prism structure, the first solidified block track bed installation groove (212) is a rectangular groove structure with one side through, and the first solidified block track bed is installed The grooves (212) are slotted on two adjacent surfaces of the first solidified block body (211), and one end side and bottom surface of the sleeper (1) are arranged inside the first solidified block track bed installation groove (212). 5.根据权利要求1所述的一种新型城市轨道交通复合减振系统,其特征在于:所述第二聚氨酯固化块(31)包括第二固化块本体(311)和第二固化块道床安装槽(312),所述第二固化块本体(311)为直四棱柱结构,所述第二固化块道床安装槽(312)为单侧贯通的矩形槽结构,所述第二固化块道床安装槽(312)开槽在所述第二固化块本体(311)相邻的两表面,所述轨枕(1)一端侧面和底面设置在所述第二固化块道床安装槽(312)内部。5. A novel composite vibration damping system for urban rail transit according to claim 1, characterized in that: the second polyurethane curing block (31) comprises a second curing block body (311) and a second curing block track bed installation A groove (312), the second solidified block body (311) is a right quadrangular prism structure, the second solidified block track bed installation groove (312) is a rectangular groove structure with one side through, the second solidified block track bed installation The grooves (312) are slotted on two adjacent surfaces of the second solidified block body (311), and one end side and bottom surface of the sleeper (1) are arranged inside the second solidified block track bed installation groove (312). 6.根据权利要求1所述的一种新型城市轨道交通复合减振系统,其特征在于:所述轨枕(1)长为2195~2205mm、宽为255~265mm、高为157~177mm。6. A new type of composite vibration damping system for urban rail transit according to claim 1, wherein the sleeper (1) is 2195-2205 mm long, 255-265 mm wide, and 157-177 mm high.
CN202120792072.XU 2021-04-16 2021-04-16 Novel urban rail transit composite vibration reduction system Active CN215481990U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116145476A (en) * 2023-02-15 2023-05-23 北京铁科首钢轨道技术股份有限公司 Polyurethane elastic ballast bed block, assembled ballast bed and assembling method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116145476A (en) * 2023-02-15 2023-05-23 北京铁科首钢轨道技术股份有限公司 Polyurethane elastic ballast bed block, assembled ballast bed and assembling method thereof

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