WO2024021391A1

WO2024021391A1 - Regulatory vibration isolator

Info

Publication number: WO2024021391A1
Application number: PCT/CN2022/133886
Authority: WO
Inventors: 厉敏辉; 陈天平; 郑靖宇; 王博; 许孔斌
Original assignee: 浙江天铁实业股份有限公司
Priority date: 2022-07-23
Filing date: 2022-11-24
Publication date: 2024-02-01
Also published as: CN116497647A

Abstract

Provided in the present invention is a regulatory vibration isolator. The regulatory vibration isolator has a through outer sleeve and a plurality of spring assemblies containing rubber springs, such that by means of the plurality of rubber springs, a rigid connection between a ballast bed structure and a base structure can be cut off, and impact energy generated during the operation of a train can be absorbed, thereby achieving damping and noise reduction. The rubber spring has easily adjustable rigidity, and can be applied to various road sections with different damping requirements. The rubber spring generally has degrees of freedom in a plurality of directions such as in a vertical direction, a transverse direction, a longitudinal direction and a torsion direction. In the spring assembly of the present invention, the rubber spring is arranged in an encapsulation structure formed by an upper regulatory housing and a lower regulatory housing, which are assembled in an embedded manner, and the transverse and longitudinal degrees of freedom of the rubber spring are rationally restrained by means of the encapsulation structure, which is equivalent to strengthening the transverse rigidity of the rubber spring, such that the rubber spring can have a stable and ideal damping effect and can be protected, and the service life of the rubber spring can be prolonged.

Description

Standard vibration isolator

Technical field

The invention belongs to the technical field of track vibration and noise reduction, and specifically relates to a regulated vibration isolator.

Background technique

When a train runs on the track, the impact energy of its operation will cause severe vibration and noise on the track, seriously affecting the riding experience of passengers on the train, and also affecting the quality of life of residents around the track. At the same time, the stability, safety and service life of rail transit itself will also be affected. Therefore, it is necessary to have technologies and products that can effectively reduce vibration and noise to improve the stability of the structure and ensure the safety of track line operations.

In the existing technology, some track beds use vibration-damping pads or multiple steel springs to achieve a certain vibration and noise reduction effect, but there are still many problems: the vibration-damping pads usually adopt the form of full paving, which makes the entire vibration damping system The stiffness is still large, the vibration-absorbing effect is very limited, and the full-paved vibration-absorbing pads make it difficult to set up drainage pipelines; in addition, the vibration-absorbing pads are usually pasted or riveted to prefabricated panels through secondary processing, and the process is complicated. Installing multiple steel springs is also a complicated process and takes a long time to construct, and because the stiffness of the steel springs is difficult to adjust, the scope of application is narrow; and because the sizes of the steel springs and their assembly tools are large, they cannot be used in limited-sized spaces such as tunnels. It is difficult to carry out construction.

Although there are rubber springs in current technology, rubber springs usually have degrees of freedom in multiple directions such as vertical, transverse, longitudinal, torsional, etc., and when using spring vibration damping, only one degree of freedom in one direction is usually required. Therefore, Rubber springs are not widely used in track vibration damping.

Contents of the invention

The present invention is carried out to solve the above problems. The purpose is to provide a vibration isolator that uses rubber springs, is suitable for use in tunnels and other spaces, and can achieve good vibration and noise reduction effects. The present invention adopts the following technical solutions:

The invention provides a regulated vibration isolator, which is characterized in that it includes: an outer sleeve, which penetrates along its length direction and is fixedly embedded in the track bed plate; a spring assembly, which is arranged below the outer sleeve; a height-adjusting gasket, arranged above the spring assembly; and a locking gasket, embedded in the outer sleeve, and fixed with the height-adjusting gasket and the spring assembly through a connecting piece, wherein , the spring assembly includes: a lower housing for regulation; an upper housing for regulation; and a rubber spring, which is disposed inside the covering structure formed by fitting the upper housing for regulation and the lower housing for regulation.

The regulated vibration isolator provided by the present invention may also have the following technical features, wherein the upper and lower ends of the rubber spring are both in the shape of circular plates, the upper housing for regulation is in the shape of a non-circular cover, and the The inner surface of the top has a circular embedding groove, the regulation lower housing is in the shape of a circular cover, the upper end of the rubber spring is fitted and fixed in the embedding groove, and the lower end is fitted and fixed in the regulation in the lower housing.

The regulated vibration isolator provided by the present invention may also have the following technical features, wherein the outer peripheral edge of the regulated lower housing is provided with at least one annular rubber ring installation groove for installing a limiting rubber ring, so The limiting rubber ring is installed in the rubber ring installation groove, protrudes outward from the rubber ring installation groove and abuts against the inner surface of the regulation upper housing.

The regulated vibration isolator provided by the present invention may also have the following technical features, and further include: a limiting column, wherein a limiting column installation groove is provided in the middle of the bottom surface of the lower regulating housing, and the limiting column is One end is fitted into the limiting groove, and the other end is driven into the base.

The regulated vibration isolator provided by the present invention may also have the following technical features, wherein the inner wall of the outer sleeve has n second inner barrel protrusions, and n support steps are formed on the inner wall, n≥ 2. The upper housing for regulation is in the shape of a non-circular cover and has n support parts, the n protrusions of the height-adjusting gasket and the n supports of the upper housing for regulation. Each part is in contact with the n support steps respectively.

The regulated vibration isolator provided by the present invention may also have the technical feature that one end of the protruding portion in the second cylinder extends downward along the length direction of the outer cylinder, and one of the third A cylindrical spring limiting protrusion is provided below the protruding portion in the second cylinder, which is in contact with the upper end surface of the spring assembly.

The regulated vibration isolator provided by the present invention may also have the following technical features, wherein the inner wall of the outer sleeve also has n radially protruding first inner-cylinder protrusions. n lifting steps are formed, and the lifting steps are located above the supporting steps.

The regulated vibration isolator provided by the present invention may also have the following technical features, wherein the protruding portion in the first barrel extends in the vertical direction to the upper end of the outer barrel,

The number of the protrusions in the first cylinder is consistent with that of the protrusions in the second cylinder, and the plurality of first protrusions in the cylinder are vertically aligned with the plurality of second protrusions in the cylinder. Aligned in the straight direction, the shape of the inner wall of the outer sleeve is consistent at the first barrel inner convex portion and at the second barrel inner convex portion.

Invention functions and effects

According to the regulated vibration isolator of the present invention, since it has a penetrating outer sleeve and a plurality of spring assemblies including rubber springs, the rigid connection between the track bed structure and the base structure can be cut off by the plurality of rubber springs to absorb train movement. time impact energy to achieve the effect of rail vibration and noise reduction. The stiffness of the rubber spring is easy to adjust, so it can be applied to a variety of road sections with different vibration damping needs. In particular, rubber springs generally have degrees of freedom in multiple directions such as vertical, transverse, longitudinal, and torsional. In the spring assembly of the present invention, the rubber spring is disposed in the upper housing for regulation and the lower housing for regulation. In the formed covering structure, the lateral and longitudinal degrees of freedom of the rubber spring are reasonably restrained through the covering structure, which is equivalent to strengthening the lateral stiffness of the rubber spring, so that the rubber spring can achieve a stable and ideal vibration damping effect. And the coating structure can protect the rubber spring and extend the service life of the rubber spring.

Description of drawings

Figure 1 is a schematic plan view of a linear track bed in an embodiment of the present invention;

Figure 2 is a cross-sectional view of the linear track bed at the position of the vibration isolator in the embodiment of the present invention;

Figure 3 is an exploded structural view of the regulated vibration isolator in the embodiment of the present invention;

Figure 4 is a three-dimensional structural view of the outer sleeve in the embodiment of the present invention;

Figure 5 is a three-dimensional structural view of the outer sleeve from different angles in the embodiment of the present invention;

Figure 6 is a top view of the outer sleeve in the embodiment of the present invention;

Figure 7 is an enlarged view of the portion within frame A in Figure 5;

Figure 8 is a bottom view of the outer sleeve in the embodiment of the present invention;

Figure 9 is a cross-sectional view of the spring assembly in the embodiment of the present invention;

Figure 10 is a three-dimensional structural view of the height-adjusting gasket in the embodiment of the present invention;

Figure 11 is an orthographic view of the height-adjusting gasket in the embodiment of the present invention;

Figure 12 is a three-dimensional structural view of the locking gasket in the embodiment of the present invention;

Figure 13 is an orthographic view of the locking gasket in the embodiment of the present invention;

Figure 14 is a three-dimensional structural view of the limiting column in this embodiment;

Figure 15 is a partial cross-sectional view of the regulated vibration isolator in the embodiment of the present invention;

Figure 16 is a cross-sectional view of the linear track bed at the position of the limiting boss in the embodiment of the present invention;

Figure 17 is a flow chart for installing regulated vibration isolators in the embodiment of the present invention;

Figure 18 is a three-dimensional structural view of the lifting tool in the embodiment of the present invention;

Figure 19 is a three-dimensional structural view of the adjustment tool in the embodiment of the present invention;

Figure 20 is a cross-sectional view of the lifting tool and the regulated vibration isolator in the lifting state in the embodiment of the present invention.

Reference signs:

Linear track bed 100; track bed plate 110; plate body 111; limiting groove 114; regulated vibration isolator 130; outer sleeve 131; guide section 1311; first barrel inner protrusion 13111; lifting step 13111a; support Section 1312; second barrel inner protrusion 13121; support step 13121a; spring limit protrusion 13121b; fixed pin 1313; flange 1314; spring assembly 132; upper housing for regulation 1321; support portion 13211; relief groove 13212 ; Embedding groove 13213; Regulation lower housing 1322; Rubber ring groove 13221; Limiting column installation groove 13222; Rubber spring 1323; Limiting rubber ring 1324; Height adjustment gasket 133; Height adjustment piece protrusion 1331; First relief hole 1332; first installation groove 1333; locking washer 134; locking piece protrusion 1341; second relief hole 1342; second installation groove 1343; connector 135; limiting column 136; upper part Cylindrical end 1361; lower cylindrical end 1362; protective cover 137; counterbore 1371; base 200; sleeper 300; limiting boss 400; lifting tool 500; handle 501; lifting rod 502; lifting end 503; adjustment Tool 600; handle 601; adjustment head 602; adjustment end 6021.

Detailed ways

In order to make it easy to understand the technical means, creative features, achieved goals and effects of the present invention, the regulated vibration isolator, track bed plate and linear track bed of the present invention are described in detail below with reference to the embodiments and drawings.

Figure 1 is a schematic plan view of the linear track bed in this embodiment.

Figure 2 is a cross-sectional view of the linear track bed at the position of the vibration isolator in this embodiment. In order to show the overall structural composition, some relatively small structures are omitted in the figure.

As shown in Figure 1-2, this embodiment provides a linear track bed 100, which is arranged in a circular tunnel and used to carry linear rails. The linear track bed 100 is assembled from a plurality of track bed plates 110 connected end to end. .

The track bed plate 110 is arranged on the base 200. The track bed plate 110 includes a plate body 111 and a plurality of regulated vibration isolators 130. The plate body 111 is a reinforced concrete plate, and the regulated vibration isolators 130 are embedded in a group of two. Disposed in the plate body 111, a set of two regulated vibration isolators 130 are located close to the two rails respectively.

In this embodiment, the size of the plate body 111 is 25000mm×3300mm×340mm (length×width×thickness). On the plate body 111, 42 pairs of sleepers 300 are evenly spaced along its length direction. Two pairs of adjacent sleepers 300 are arranged on the plate body 111. The distance between them is 595 mm. In this embodiment, the sleepers 300 are short concrete sleepers, and the linear rails are placed on the plate body 111 through the sleepers 300 .

At both ends of the length direction of the plate body 111, due to the existence of cross sections at both ends, the train will generate relatively larger vibrations when traveling to this position. Correspondingly, at both ends of the plate body 111, there is a relatively higher demand for vibration reduction than in the middle. In this embodiment, the length of the plate body 111 is 25000 mm, and is divided into a middle part of the plate body and two end parts of the plate body according to a predetermined dividing ratio. The length of the middle part of the plate body is about 11000mm. In the middle part of the plate body, 11 pairs of regulated vibration isolators 130 are evenly spaced along the length direction of the plate body 111. The distance between two adjacent pairs of regulated vibration isolators 130 is is 1785mm; the length of the end of the plate is 1800mm. At the end of the plate, there are two pairs of regulated vibration isolators 130. The distance between the two pairs is 1195mm, which is smaller than the distance between the isolators in the middle of the plate. , that is, relatively more regulated vibration isolators 130 are provided at the end of the plate body to achieve a stronger vibration reduction effect.

Figure 3 is an exploded structural view of the regulated vibration isolator in the embodiment of the present invention.

As shown in FIG. 3 , the regulated vibration isolator 130 includes an outer sleeve 131 , a spring assembly 132 , a height adjustment washer 133 , a locking washer 134 , a plurality of connectors 135 , a limiting column 136 and a protective cover 137 .

Figure 4 is a three-dimensional structural view of the outer sleeve in the embodiment of the present invention.

Figure 5 is a three-dimensional structural view of the outer sleeve from different angles in the embodiment of the present invention.

As shown in FIG. 3-5 , the outer sleeve 131 is made of metal (cast iron) and has a through-type cylindrical structure. The overall height (ie, the length of the outer sleeve 131 ) is consistent with the thickness of the plate body 111 . The outer sleeve 131 can be divided into a guide section 1311 located at the upper part and a support section 1312 located at the lower part along its length direction.

The guide section 1311 is used to place the spring assembly 132, the height-adjusting gasket 133, and the locking gasket 134 during installation, and plays a guiding role when these plates slide down. The cross-sectional shape of the guide section 1311 is a triangular flange structure, which is formed with three step-shaped first inner barrel protrusions 13111 that protrude radially inward. The three first inner barrel protrusions 13111 are formed along the outer sleeve. The central axis of 131 is evenly distributed.

Figure 6 is a top view of the outer sleeve in the embodiment of the present invention.

As shown in Figures 4-6, specifically, the first inner protruding portion 13111 extends along the length direction of the outer sleeve 131, with one end extending toward the upper end of the outer sleeve 131, and the other end located in the middle of the inner sleeve 131. The support section 1312 is in the shape of a circular cylinder, so the other end of the first inner cylindrical protrusion 13111 and the support section 1312 form a lifting step 13111a, which is used for lifting by a lifting tool during installation. In addition, a surface of the first inner barrel convex portion 13111 that is equal to the central axis of the outer barrel 131 has a certain curvature.

The support section 1312 is used to provide support for the upper end of the spring assembly 132 . The support section 1312 is in the shape of a circular tube, and its inner wall has three radially protruding, step-shaped second inner tube protrusions 13121. The arrangement of the three second inner tube protrusions 13121 is consistent with the three third inner tube protrusions 13121. The protrusions 13111 in a cylinder are consistent and aligned in the vertical direction. At the second barrel inner convex portion 13121, the inner wall shape of the support section 1312 is consistent with the inner wall shape of the guide section 1311.

FIG. 7 is an enlarged view of the portion within frame A in FIG. 5 .

Figure 8 is a bottom view of the outer sleeve in the embodiment of the present invention.

As shown in Figures 7-8, specifically, the second inner barrel protrusion 13121 forms a support step 13121a in the support section 1312. One end of the second inner bulge 13121 also extends downward along the length direction of the outer sleeve 131 to form a lateral limiting structure, which is used to play a lateral limiting role when installing the height-adjusting gasket 133 etc., which will be combined below. The specific structure of the height-adjusting gasket 133 will be described in detail. A spring limiting protrusion 13121b is provided at one of the support steps 13121a. After the installation is completed, the spring limiting protrusion 13121b abuts the upper end surface of the spring assembly 132 to limit the circular motion of the spring assembly 132.

That is to say, the inner wall of the outer sleeve 131 has two circles of stepped structures, the upper circle is the lifting step 13111a, and the lower circle is the supporting step 13121a.

In addition, the outer sleeve 131 is a pre-embedded outer sleeve, which is pre-embedded in the plate body 111 when the plate body 111 is cast and manufactured. To this end, a pair of outwardly extending outer sleeves are respectively provided on the guide section 1311 and the support section 1312. The fixed pin 1313 is a columnar steel bar with a length of 50mm-70mm. The extension directions of the two pairs of fixing pins 1313 are perpendicular to each other, that is, they are arranged in a crisscross shape, and are used for binding and fixing in reinforced concrete slabs; the lower end of the outer sleeve 131 has a circle of outwardly protruding flange 1314 to form a skirt structure , used to increase the adhesion and load-bearing capacity of the embedded outer sleeve.

Figure 9 is a cross-sectional view of the spring assembly in the embodiment of the present invention.

As shown in FIGS. 3 and 9 , the spring assembly 132 is provided below the outer sleeve 131 and mainly includes an upper housing 1321 for regulation, a lower housing 1322 for regulation and a rubber spring 1323 .

The upper housing 1321 for regulation is made of metal material, has a non-circular cover shape, and has three outwardly protruding support parts 13211. The upper end surface of the regulatory upper housing 1321 has a circular relief groove 13212, which is used to provide space for corresponding tools during installation; the inner surface has a circular embedding groove 13213, and the shape and size of the embedding groove 13213 are consistent with The upper end of the rubber spring 1323 matches. In addition, the inner diameter of the upper regulating housing 1321 is slightly larger than the outer diameter of the lower regulating housing 1322 .

The lower housing 1322 for regulation is also made of metal and has a circular cover shape. The inner diameter of the lower housing 1322 for regulation matches the lower end of the rubber spring 1323. The outer periphery of the regulation lower housing 1322 has two annular rubber ring grooves 13221 for fitting and installing the limiting rubber ring 1324. The middle part of the bottom surface of the lower housing 1322 for regulation has a circular limiting column installation groove 13222 for setting the limiting column 136. The limiting column 136 is also embedded in the base 200 to limit the level of the spring assembly 132 relative to the base 200. Displacement.

The rubber spring 1323 uses the elastic deformation of its own rubber material to absorb the vibration energy transmitted from the plate body 111 when the train is running, thereby reducing vibration and noise. The rubber spring 1323 is made of vulcanized rubber and has a circular plate-shaped upper end and a lower end, and the upper and lower ends of the rubber spring 1323 are wrapped with circular metal plates to make the two ends of the rubber spring 1323 bear the load. Force can be transmitted more evenly to the middle. The middle part of the rubber spring 1323 is formed between the upper end and the lower end of the rubber spring 1323, and the middle part of the rubber spring 1323 contracts radially inward.

Rubber spring 1323 is available in a variety of stiffness specifications. During the production process, the stiffness of the rubber spring 1323 can be adjusted by adjusting the rubber composition and production parameters. In this embodiment, the rubber spring 1323 disposed in the middle of the plate body 111 has a relatively lower stiffness, and the rubber spring 1323 disposed at the end of the plate body has a relatively higher stiffness.

When the spring assembly 132 is assembled, the opening of the lower housing 1322 for regulation is upward, and the opening of the upper housing 1321 for regulation is downwardly wrapped around the lower housing 1322 for regulation, forming a covering structure. The limiting rubber ring 1324 is fitted in the rubber ring groove 13221 of the lower housing 1322 for regulation, and the limiting rubber ring 1324 protrudes outward from the rubber ring groove 13221. The protruding part of the limiting rubber ring 1324 is in line with the regulations. The inner surfaces of the upper housing 1321 are in contact with each other to form a horizontal limit on the upper and lower housings.

The rubber spring 1323 is provided in the covering space formed by fitting the upper housing 1321 for regulation and the lower housing 1322 for regulation. The upper end of the rubber spring 1323 is fitted in the embedding groove 13211 of the upper regulating housing 1321 and fixed by bonding; the lower end of the rubber spring 1323 is fitted in the lower regulating housing 1322 and is also fixed by bonding. Fixed to form a vibration-absorbing component with elastic buffering effect as a whole.

Rubber springs generally have vertical, transverse, longitudinal, torsional and other degrees of freedom in multiple directions. However, the spring assembly 132 of this embodiment reasonably restricts the lateral and longitudinal degrees of freedom of the rubber spring 1323 through the covering structure, which is equivalent to The lateral stiffness of the rubber spring 1323 is strengthened, so that the rubber spring 1323 can achieve a stable and ideal vibration damping effect, and the service life of the rubber spring 1323 can be extended.

Figure 10 is a three-dimensional structural view of the height-adjusting gasket in the embodiment of the present invention.

Figure 11 is an orthographic view of the height-adjusting gasket in the embodiment of the present invention.

The height adjustment washer 133 is used to adjust the installation height of the spring assembly 132 in the outer sleeve 131, so that the height everywhere on the surface of the track bed plate 110 can comply with the design data. As shown in Figure 10-11, the height-adjusting gasket 133 is a sheet-shaped piece made of metal and has three height-adjusting sheet protrusions 1331, so that the cross-sectional shape of the height-adjusting gasket 133 matches the shape of the inner wall of the guide section 1311. , specifically, the shape of the outer ring of the cross section of the height-adjusting gasket 133 is basically consistent with the shape of the inner wall of the guide section 1311, and the size is slightly smaller than the shape of the inner wall of the guide section 1311. A substantially circular first relief hole 1332 is provided in the middle of the height-adjusting gasket 133 for allowing corresponding installation tools to extend when installing the vibration isolator. The height-adjusting gasket 133 also has three radially extending first mounting grooves 1333 for installing the connector 135. The first mounting grooves 1333 are connected to the first relief hole 1332 in the middle. in the extending direction of the first mounting groove 1333. According to the actual required height, one or more height-adjusting spacers 133 can be used, and the thickness of each height-adjusting spacer 133 is 2mm-10mm.

In addition, as shown in FIG. 3 , the shape of the top surface of the regulating upper housing 1321 matches the orthogonal projection shape of the height-adjusting spacer 133 .

Figure 12 is a three-dimensional structural view of the locking gasket in the embodiment of the present invention.

Figure 13 is an orthographic view of the locking gasket in the embodiment of the present invention.

The locking washer 134 is used to lock the height-adjusting washer 133 and the spring assembly 132 within the outer sleeve 131 . As shown in Figures 12-13, the locking washer 134 is also a sheet-shaped piece made of metal. Its outer ring shape is consistent with the height-adjusting washer 133 and has three locking piece protrusions 1341, which will not be described again. A substantially circular second relief hole 1342 is opened in the middle of the locking washer 134, and has three radially extending second installation grooves 1343 connected with the second relief hole 1342. The locking piece has a protrusion. The extending directions of the portion 1341 and the second mounting groove 1343 are staggered, and the extension line of the second mounting groove 1343 is located between the two locking piece protruding portions 1341 . The thickness of the locking washer 134 is 10mm.

Since the shapes of the regulatory upper housing 1321, the height-adjusting washer 133 and the locking washer 134 all match the inner wall of the guide section 1311, the spring assembly 132, the height-adjusting washer 133 and the locking washer 134 can all be formed from The upper end opening of the outer sleeve 131 is put in, and under the guidance of the guide section 1311, it slides down to the support section 1312 while maintaining the angle at which it is put in, so as to facilitate installation.

In addition, as shown in Figure 3, due to the three mounting holes 13213 on the upper housing 1321, the three first mounting grooves 1333 on the height-adjusting gasket 133, and the three second mounting holes on the locking gasket 134, The distribution of the slots 1343 is consistent, so during installation, these mounting holes and mounting slots can form three connecting piece mounting holes that pass through in the vertical direction, so that the connecting pieces 135 can be installed, and the spring assembly 132 and the height-adjusting gasket 133 can be installed. Fastened together with locking washer 134.

The protective cover 137 is used to cover the upper end of the outer sleeve 131 after the vibration isolator is installed to prevent dust and debris from entering and affecting the vibration isolation effect and service life of the vibration isolator. As shown in FIG. 3 , the protective cover 137 is a plate-shaped member made of metal, and its shape is consistent with the shape of the upper end surface of the outer sleeve 131 . The protective cover 137 is provided with three countersunk holes 1371, and the upper end of the outer sleeve 131 is also provided with mounting holes at corresponding positions, so that the protective cover 136 can be installed on the outer sleeve 131 through connectors (bolts).

Figure 14 is a three-dimensional structural view of the limiting column in this embodiment.

As shown in FIGS. 3 and 14 , the limiting column 136 is a pin-shaped metal part, used to limit the horizontal displacement of the spring assembly 132 , and has an upper cylindrical end 1361 and a lower cylindrical end 1362 . During installation, the upper cylindrical end 1361 is inserted into the limiting column installation groove 13222 of the lower housing 1322 for regulation, and the lower cylindrical end 1362 is driven into the base 200 and fixed. The diameter of the upper cylindrical end 1361 is larger than that of the lower cylindrical end 1362, so a step structure is formed in the upper middle part of the limiting column 136 for limiting the driving depth of the limiting column 136 when driving into the base 200.

FIG. 15 is a partial cross-sectional view of the regulated vibration isolator in this embodiment, which shows the state in which the regulated vibration isolator 130 is installed.

As shown in Figure 15, the outer sleeve 131 is pre-embedded in the plate body 111. Since the height of the outer sleeve 131 is consistent with the thickness of the plate body 111, the upper and lower end openings of the outer sleeve 131 are respectively exposed from both sides of the plate body 111. After the installation is completed, the height-adjusting gasket 133 and the three protrusions of the upper housing 1321 for regulation are respectively in contact with the three support steps 13121a. The housing 1321, the height-adjusting washer 133 and the locking washer 134 are fixedly connected together through the connecting piece 135, thereby fixing the three inside the outer sleeve 131. The spring component 132 is disposed below the outer sleeve 131 . The upper end of the spring component 132 is supported by the support step 13121 a , the lower end is in contact with the base 200 , and is fixed on the base 200 through the limiting column 136 .

In addition, the total thickness of the spring assembly 132 and the height-adjusting gasket 133 is greater than the distance from the support step 1312 to the lower end of the outer sleeve 131, which makes the lower end of the spring assembly 132 located below and outside the plate body 111, that is, the plate body 111 is not directly Instead of being in contact with the base 200 and being placed on the base 200 in point contact through a plurality of spring components 132, the plate body 111 forms a floating plate.

Figure 16 is a cross-sectional view of the linear track bed at the position of the limiting boss in the embodiment of the present invention.

As shown in Figure 16, the linear track bed 100 is assembled by a plurality of the above-mentioned track bed plates 110 connected end to end, and the gap between two adjacent track bed plates 110 is 70 mm. There are also rectangular limiting grooves 114 on both sides of the length direction of the plate body 111 for setting the limiting bosses 400 during assembly. The limiting boss 400 is a rectangular parallelepiped concrete platform, and its shape matches the limiting groove 114 . During assembly, the limiting bosses 400 are respectively engaged with the limiting grooves 114 on the corresponding sides of the two adjacent track bed plates 110, thereby limiting the track bed plates 110 in the horizontal direction.

Figure 17 is a flow chart for installing a regulated vibration isolator in the embodiment of the present invention.

As shown in Figure 17, the installation process of the regulated vibration isolator 130 of this embodiment specifically includes the following steps:

In step S1, a steel frame and a formwork are installed on the base 200, and a plurality of outer sleeves 131 are placed at predetermined positions in the steel frame, and then concrete is cast to obtain a plate body 111 embedded with the outer sleeves 131.

Step S2: Measure the relative height parameter of each outer sleeve 131 through a testing instrument, and set the number and specifications of the corresponding height-adjusting gaskets 133 according to the measured relative height parameter.

Step S3: use a jacking tool to lift the plate body 111 to a predetermined construction height by using part of the outer sleeve 131 in a way of jacking up one by one.

Since the track bed plate 110 of this embodiment is used in a tunnel, and the space in the tunnel is limited, it is impossible to arrange jacking equipment on both sides of the track bed plate. Therefore, the structure of the outer sleeve 131 is used for jacking, using "one every other and one jack". method, that is, along the length direction of the track bed board 110, select a pair of outer sleeves 131 for lifting at every interval of a pair of outer sleeves 131. After lifting, install vibration isolators on the other unused outer sleeves 131. ; Then, use the installed outer sleeve 131 to lift, and install the remaining outer sleeves 131, thereby completing the installation of all vibration isolators on the track bed plate 110.

Figure 18 is a three-dimensional structural view of the lifting tool in the embodiment of the present invention.

As shown in FIG. 18 , the lifting tool 500 has a handle 501 , a lifting rod 502 and a lifting claw 503 installed on the lifting rod 502 . The distribution of the three lifting claws 503 matches the distribution of the plurality of first inner barrel protrusions 13111 in the outer sleeve 131, and the width of the lifting claws 503 is smaller than the distance between two adjacent lifting steps 13111a.

Therefore, during installation, the construction worker can hold the handle 501, extend the lifting claw 503 into the outer sleeve 131, and pass the lifting claw 503 between the two lifting steps 13111a. At this time, the lifting claw 503 is located under a circle of lifting steps 13111a. The construction worker then turns the handle 501 to rotate the lifting claw 503 60 degrees in the horizontal direction. At this time, the three lifting claws 503 are respectively located directly below the three lifting steps 13111a. Pull the lifting tool 500 upward to lift the slab. Body 111 is raised.

The lifting height should be such that the gap between the plate body 111 and the base 200 is greater than the total thickness of the inserted spring assembly 132 and several height-adjusting pads 133, so that the spring assembly 132 is not stressed at this time, and the spring assembly 132 and the height-adjusting The spacer 133 is rotatably adjustable.

Step S4: For the unused outer sleeve 131, sequentially put the spring assembly 132 and the height-adjusting gasket 133 from the upper opening of the outer sleeve 132, and rotate the spring assembly 132 and the height-adjusting gasket 133 through the adjustment tool. At a predetermined angle, its plurality of protrusions are located directly below the plurality of support steps 13121a.

In this embodiment, the number of support steps 13121a is three, and they are evenly distributed along the central axis of the outer sleeve 131. Therefore, the inserted spring assembly 132 and the height-adjusting gasket 133 are rotated 60 degrees by an adjusting tool. At this time, the spring The three protrusions of the assembly 132 and the height-adjusting gasket 133 are respectively located directly below the three support steps 13121a. After the plate body 111 is put down, the three protrusions are respectively in contact with the three support steps 13121a, thereby forming a supporting structure.

In addition, since the support step 13121a has the above-mentioned lateral limiting structure, when the spring assembly 132 and the height-adjusting washer 133 are rotated in the clockwise direction, when the construction worker feels the rotation resistance, it means that the rotation is in place.

Figure 19 is a three-dimensional structural view of the adjustment tool in this embodiment.

As shown in Figure 19, the adjustment tool 600 has a T-shaped handle 601 and an adjustment head 602 connected to the other end of the handle 601. The adjustment head 602 has three radially extending adjustment end portions 6021. The three adjustment end portions 6021 The position distribution corresponds to the three mounting grooves or mounting holes of the spring support plate 123, the height-adjusting washer 124, and the locking washer 125 respectively. Bolts extending in the vertical direction are installed on the adjusting end 6021 (not shown in the figure).

Therefore, taking the height adjustment washer 133 as an example, the construction worker can hold the handle 601, extend the adjustment head 602 into the outer sleeve 131, and insert the bolts on the three adjustment ends 6021 into the height adjustment washer 133 respectively. In the three first installation grooves 1333, the handle 601 is then rotated horizontally, so that the height-adjusting pad 133 can be rotated horizontally through the three adjustment ends 6021.

Step S5, lower the plate body 111 using a lifting tool.

At this time, each spring assembly 132 enters a stressed state, the plate body 111 floats on the base 200, and all the load of the plate body 111 is transferred to the spring assembly 132 through the support step 13121a of the outer sleeve 131.

Step S6: For each outer sleeve 131 installed in step S4, put the locking washer 134 from the upper opening of the outer sleeve 131, and secure the locking washer 134, height adjustment washer 133 and spring assembly 132 through bolts. are fixed together to prevent the height-adjusting gasket 133 and the spring assembly 132 from rotating and falling off.

Step S7: Use a lifting tool to lift the panel body 111 to a predetermined construction height using the installed outer sleeve 131.

Figure 20 is a cross-sectional view of the lifting tool and the regulated vibration isolator in the lifting state in this embodiment.

As shown in Figure 20, since the lifting step 13111a is located above the supporting step 13121a, the installed outer sleeve 131 can still be used for lifting.

In step S8, for the unused outer sleeve 131, the spring assembly 132 and the height-adjusting gasket 133 are put in and installed from the upper end opening of the outer sleeve 132 in sequence. The details are consistent with step S4 and will not be described again.

Step S9, lower the plate body 111 using a lifting tool.

Step S10, for each outer sleeve 131 installed in step S8, put the locking washer 134 from the upper opening of the outer sleeve 131, and secure the locking washer 134, height adjustment washer 133 and spring assembly 132 through bolts. Fastened together.

In step S11, for each outer sleeve 131, a protective cover 136 is installed on the upper end surface of the outer sleeve 131 to complete the installation of all regulated vibration isolators 130 to form the above-mentioned track bed plate 110.

Embodiment functions and effects

According to the regulated vibration isolator 130 provided in this embodiment, since it has a penetrating outer sleeve 131 and a plurality of spring assemblies 132 including rubber springs 1333, the space between the track bed structure and the base structure can be blocked by the plurality of rubber springs 1333. The rigid connection absorbs the impact energy when the train is running and achieves the effect of track vibration and noise reduction. The stiffness of the rubber spring 1333 is easy to adjust, so it can be applied to a variety of road sections with different vibration damping needs. In particular, rubber springs generally have degrees of freedom in vertical, transverse, longitudinal, torsional and other directions. In the spring assembly 132 of the present invention, the rubber spring 1333 is provided in the upper housing 1331 for regulation and the lower housing 1331 for regulation. In the covering structure formed by the fitting of 1332, the lateral and longitudinal degrees of freedom of the rubber spring 1333 are reasonably restrained through the covering structure, which is equivalent to strengthening the lateral stiffness of the rubber spring 1333, so that the rubber spring 1333 can play a stable and Ideal vibration damping effect, and the covering structure can protect the rubber spring 1333 and extend the service life of the rubber spring 1333.

Further, in the spring assembly 132, the lower end of the rubber spring 1323 is fitted and bonded inside the matching lower housing 1322 for regulation, and the upper end of the rubber spring 1323 is fitted and bonded inside the matching lower housing 1322 for regulation. The housing 1321 is embedded in the groove 13211, and the upper housing 1321 for regulation and the lower housing 1322 for regulation are also laterally limited by the limiting rubber ring 1324, thus forming a whole with elastic buffering effect to ensure It ensures its safety and stability, and during the installation process of the regulated vibration isolator 130, it only needs to be installed as a whole, so the construction is convenient and the construction time is shorter.

Furthermore, since the outer ring shapes of the regulatory upper housing 1321, the height adjustment washer 133 and the locking washer 134 are all consistent and match the shape of the inner wall of the guide section 1311 of the outer sleeve 131, during installation, only The spring assembly 132, the height-adjusting washer 133 and the locking washer 134 need to be put in sequentially from the upper end opening of the outer sleeve 131. After being put in, due to the guiding effect of the guide section 1311, it will not deflect when falling. Rotate the spring assembly 132 and the height-adjusting washer 133 so that they are in contact with the three support steps 13121a to form a support structure. After rotation, the mounting holes on the regulation upper housing 1321, the mounting grooves on the height adjustment washer 133 and the locking washer 134 can be aligned to form a through-connection mounting hole, so that the three parts can be easily connected through bolts and nuts. They are fastened together, thus not only ensuring structural strength but also facilitating quick installation. And because such a detachable structure is used instead of welding to realize the support structure, it is also more conducive to later maintenance.

In addition, since there are two circles of stepped structures in the outer sleeve 131, the upper circle is the lifting step 13111a, and the lower circle is the supporting step 13121a. Therefore, the lifting step 13111a can be used to lift the outer sleeve 131. The plate body 111 is lifted. Moreover, even if the outer sleeve 131 has completed the installation of the vibration isolator, since the lifting step 13111a is located above, the outer sleeve 131 can still be used for lifting, so that the alternate installation method in the embodiment can be realized. . With this installation method, there is no need to lift from the side of the track bed board, so it is suitable for spaces with limited dimensions such as tunnels.

The above-mentioned embodiments are only used to illustrate specific implementations of the present invention, and the present invention is not limited to the description scope of the above-mentioned embodiments.

In the above embodiment, the outer sleeve 131 has three radially inwardly protruding and evenly distributed first inner barrel convex portions 13111 and second inner barrel convex portions 13121. The upper housing 1321, height adjustment The shapes of the gasket 133 and the locking gasket 134 match the guide section 1211, so that during installation, these plates can be placed directly from the upper opening of the outer sleeve 131, and the spring assembly 132 and the height-adjusting gasket 133 can be rotated. After 60 degrees, a support structure that abuts the three support steps 13111a can be formed. In an alternative, the outer sleeve 131 may also have two or more (for example, n) first inner barrel protrusions 13111 and second inner barrel protrusions 13121, both of which are evenly distributed along the circumference. The shapes of the housing 1321, the height-adjusting gasket 133 and the locking gasket 134 match them. When installing, rotating the spring assembly 132 and the height-adjusting gasket 133 180/n degrees can also achieve corresponding technical effects. In the case of two first cylinder protrusions 13111 and two second cylinder protrusions 13121, the support stability of a single vibration isolator is slightly reduced, but because there are many embedded in the plate body 111 With a vibration isolator, the overall support stability can still be guaranteed.

In the above embodiment, the limiting boss 400 is a rectangular concrete platform, and both sides of the plate body 111 have rectangular limiting grooves 114 that match the limiting boss 400, so that the limiting boss 400 can be matched with the limiting boss 400. Two adjacent plates 111 are engaged with each other. In an alternative, the limiting boss 400 can also be a concrete platform of other shapes, such as a rectangular parallelepiped or a cylinder with a leading angle, and the limiting groove 114 has a matching shape, and corresponding technologies can also be implemented. Effect.

Claims

A regulated vibration isolator, installed in the track bed plate, is characterized by including:

The outer sleeve runs through the length direction and is fixedly embedded in the track bed board;

A spring assembly is provided below the outer sleeve;

Height-adjusting spacers are provided above the spring assembly; and

A locking gasket is embedded in the outer sleeve and fixed with the height-adjusting gasket and the spring assembly through a connecting piece,

Wherein, the spring assembly includes:

Lower casing for regulations;

Regulatory housing; and

A rubber spring is provided inside the covering structure formed by fitting the upper regulating casing and the lower regulating casing.
The regulated vibration isolator according to claim 1, characterized in that:

Wherein, the upper end and lower end of the rubber spring are in the shape of circular plates,

The upper housing for regulation is in the shape of a non-circular cover, and its top inner surface has a circular embedded groove.

The lower housing for regulation is in the shape of a circular cover.

The upper end of the rubber spring is fitted and fixed in the embedding groove, and the lower end is fitted and fixed in the lower housing for regulation.
The regulated vibration isolator according to claim 1, characterized in that:

Wherein, the outer peripheral edge of the lower housing for regulation is provided with at least one annular rubber ring installation groove for installing the limiting rubber ring,

The limiting rubber ring is installed in the rubber ring installation groove, protrudes outward from the rubber ring installation groove and abuts against the inner surface of the regulation upper housing.
The regulated vibration isolator according to claim 1, further comprising:

limit column,

Wherein, a limiting column installation groove is provided in the middle of the bottom surface of the lower housing for regulation,

One end of the limiting post is fitted into the limiting groove, and the other end is driven into the base.
The regulated vibration isolator according to claim 1, characterized in that:

Wherein, the inner wall of the outer sleeve has n second inner convex portions of the sleeve, and n support steps are formed on the inner wall, n≥2,

The upper housing for regulation is in the shape of a non-circular cover and has n supporting parts.

The n protruding portions of the height-adjusting gasket and the n supporting portions of the regulating upper housing are respectively in contact with the n supporting steps.
The regulated vibration isolator according to claim 5, characterized in that:

Wherein, one end of the protrusion in the second barrel extends downward along the length direction of the outer barrel,

A cylindrical spring limiting protrusion is provided below one of the protrusions in the second cylinder, and abuts against the upper end surface of the spring assembly.
The regulated vibration isolator according to claim 5, characterized in that:

Wherein, the inner wall of the outer sleeve also has n radially protruding first inner barrel convex portions, and n lifting steps are formed on the inner wall,

The lifting step is located above the supporting step.
The regulated vibration isolator according to claim 7, characterized in that:

Wherein, the first inner convex portion extends along the vertical direction to the upper end of the outer sleeve,

The number of the protrusions in the first cylinder is consistent with that of the protrusions in the second cylinder, and the plurality of first protrusions in the cylinder are vertically aligned with the plurality of second protrusions in the cylinder. aligned straight up,

The shape of the inner wall of the outer sleeve is consistent at the first inner barrel convex portion and at the second inner barrel convex portion.