WO2024021392A1

WO2024021392A1 - Buried type vibration isolator

Info

Publication number: WO2024021392A1
Application number: PCT/CN2022/133896
Authority: WO
Inventors: 厉敏辉; 王博; 郑靖宇; 许静; 赵红
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: CN116497644A

Abstract

The present invention provides an buried type vibration isolator, comprising a pre-buried mounting seat, a spring assembly, and a height adjusting gasket; one end of the spring assembly is embedded in the pre-buried mounting seat, and the other end of the spring assembly abuts against a base by means of the height adjusting gasket. Therefore, the buried type vibration isolator of the present invention has a compact structure and a small number of parts; during mounting, the mounting can be completed by only placing the height adjusting gasket and the spring assembly at predetermined vibration isolator positions on the base, and then placing a track bed slab in which the pre-buried mounting seat is buried; the mounting is convenient, the construction time is short, and other large-sized assembly devices are not needed except a hoisting device used for hoisting the track bed slab, and therefore, the buried type vibration isolator is suitable for construction of an elevated trackway. A rubber spring is arranged inside a wrapping structure formed by fitting an upper housing to a lower housing so as to reasonably restrain transverse and longitudinal deformation of the rubber spring, thereby avoiding the impact of external sundries, dust and the like on the rubber spring, facilitating maintaining ideal rigidity of the rubber spring, guaranteeing a vibration-damping effect, and prolonging the service life.

Description

Buried vibration isolator

Technical field

The invention belongs to the technical field of track vibration and noise reduction, and specifically relates to a buried 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 are mostly in the form of full paving, so that the stiffness of the entire vibration-damping system is still low. Large, the vibration damping effect is very limited, and the full floor of damping pads makes it difficult to set up drainage pipelines; in addition, the damping pads are usually pasted or riveted on the prefabricated panels through secondary processing, and the process is complicated. For track beds that use steel springs, the corresponding outer cylinder needs to be embedded when casting the concrete floating slab, and then the steel springs are installed one by one in the outer cylinder, adjusted, and multiple fasteners are installed. The process is also complicated; in addition, steel springs and The assembly tools are larger in size and require larger space for construction.

Elevated tracks often have limited construction space and tight construction schedule requirements. The above two vibration damping devices are difficult to apply to elevated tracks due to complex processes, long construction time, and large space required for construction.

Contents of the invention

The present invention is carried out to solve the above problems. The purpose is to provide a vibration isolator with compact structure, small size and short construction time, which is suitable for elevated tracks. The present invention adopts the following technical solutions:

The invention provides a buried vibration isolator, which is characterized in that it includes: a mounting seat, which is pre-buried under the track bed plate; a spring component, the upper end of which is embedded in the mounting seat, and the lower end of which is in contact with the base; and an adjustment seat. A high spacer is provided between the lower end of the spring assembly and the base for adjusting the installation height of the spring assembly, wherein the spring assembly includes: a spring-supported upper shell; a spring-supported lower shell; And a rubber spring is provided inside the covering structure formed by fitting the upper spring supporting housing and the lower spring supporting housing.

The buried vibration isolator provided by the present invention may also have the following technical features, wherein the mounting seat is a pre-embedded part made of metal, and the top of the spring-supported upper shell is provided with a structure capable of contacting the metal material. The adsorbed magnet is used to adsorb and fix the spring-supported upper shell in the mounting base.

The buried vibration isolator provided by the present invention may also have the following technical features, and further include a limiting column, wherein the bottom of the spring-supported lower housing has a limiting column installation groove, and the middle part of the height-adjusting gasket It has a relief hole. During installation, the upper end of the limit column is embedded in the installation groove of the limit column, the lower end is driven into the base for fixation, and the limit column passes through the relief of the height-adjusting gasket. hole.

The buried vibration isolator provided by the present invention may also have the following technical features, wherein the limiting column has a cylindrical upper cylindrical end and a cylindrical lower cylindrical end, and the diameter of the lower cylindrical end is smaller than the cylindrical end. The length of the upper cylindrical end and the lower cylindrical end is 40 mm to 60 mm.

The buried vibration isolator provided by the present invention can also have the following technical characteristics, and also include an anti-falling bracket, which has: at least a pair of connecting plates, one end is fixed below the spring-supported lower housing, and the other end is movably fixed. on the periphery of the spring-supported upper housing; and a plurality of connectors, connecting both ends of the connecting plate to the spring-supported lower housing and the spring-supported upper housing respectively.

The buried vibration isolator provided by the present invention can also have the following technical features, wherein the connecting plate is L-shaped and has two mutually perpendicular sections. One section is provided with a plurality of mounting holes, and the other section is provided with a limited number of installation holes. The length direction of the limiting strip hole is consistent with the extension direction of the other section. The bottom surface of the spring-supported lower housing has at least one pair of connecting plate inlays, the shape of which is the same as that of the connecting plate. One end of the connecting plate is matched with one end of the connecting plate, and one end of the connecting plate is embedded in the connecting plate slot, and is fixed on the spring-supported lower housing through a plurality of connecting parts, and the connecting parts pass through the limiting bar. -shaped hole, install the other end of the connecting plate on the peripheral edge of the spring-supported upper shell, and the spring-supported upper shell can move relative to the connecting plate, and the moving range is the shape of the limiting bar Hole length range.

The buried 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 circular, the spring supporting upper shell is in the shape of a circular cover, and the middle part of the inner surface It has a circular embedding groove, the embedding groove matches the upper end of the rubber spring, the upper end of the rubber spring is fitted and bonded in the embedding groove, and the spring supports the lower housing in a shape of It is circular cover-shaped, and its interior matches the lower end of the rubber spring. The lower end of the rubber spring is embedded and bonded in the spring support lower housing.

The buried vibration isolator provided by the present invention may also have the following technical features, wherein the thickness of the height-adjusting gasket is 2 mm to 25 mm, and the number is one or more.

Invention functions and effects

The buried vibration isolator according to the present invention includes a mounting seat, a spring component and a height-adjusting gasket. The mounting seat is pre-embedded under the track bed plate. One end of the spring component is embedded in the mounting seat, and the other end is offset against the base through the height-adjusting gasket. Therefore, the buried vibration isolator of the present invention has a compact structure and a small number of parts. During installation, it is only necessary to place the height-adjusting gasket and spring assembly at each predetermined position of the vibration isolator on the base, and then place them The installation can be completed by installing the track bed board with a pre-embedded mounting seat. It is easy to install and the construction time is short. It does not require other large-scale assembly equipment except for the hoisting equipment used to hoist the track bed board. Therefore, it is suitable for the construction of elevated tracks. The spring assembly further includes a spring-supported upper shell, a spring-supported lower shell and a rubber spring. The rubber spring is arranged inside a wrapping structure formed by fitting the upper and lower shells. Therefore, the lateral and longitudinal deformation of the rubber spring is reasonably controlled through the wrapping structure. Constraint, and avoid the impact of external debris, dust, etc. on the rubber spring, so it is conducive to maintaining the ideal stiffness of the rubber spring, ensuring its vibration reduction effect, and increasing its service life.

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 a schematic plan view of the track bed board in the embodiment of the present invention;

Figure 4 is an exploded structural view of the buried vibration isolator in Embodiment 1 of the present invention;

Figure 5 is a three-dimensional structural view of the mounting base in Embodiment 1 of the present invention;

Figure 6 is a three-dimensional structural view of the mounting base from different angles in Embodiment 1 of the present invention;

Figure 7 is a cross-sectional view of the spring assembly in Embodiment 1 of the present invention;

Figure 8 is a three-dimensional structural view of the height-adjusting gasket in Embodiment 1 of the present invention;

Figure 9 is an orthographic view of the height-adjusting gasket in Embodiment 1 of the present invention;

Figure 10 is a three-dimensional structural view of the limiting column in Embodiment 1 of the present invention;

Figure 11 is a cross-sectional view of the buried vibration isolator in Embodiment 1 of the present invention;

Figure 12 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 13 is a flow chart for installing a buried vibration isolator in Embodiment 1 of the present invention;

Figure 14 is a three-dimensional structural view of the spring assembly in Embodiment 2 of the present invention;

Figure 15 is a three-dimensional structural view of the spring assembly from different angles in Embodiment 2 of the present invention;

Figure 16 is an exploded structural view of the spring assembly in Embodiment 2 of the present invention;

Figure 17 is a three-dimensional structural view of the spring-supported lower housing in Embodiment 2 of the present invention;

Figure 18 is a three-dimensional structural view of the connecting plate in Embodiment 2 of the present invention;

Figure 19 is a cross-sectional view of the spring assembly in Embodiment 2 of the present invention.

Reference signs:

Linear track bed 100; track bed plate 110; plate body 111; sleeper 112; limiting groove 114; buried vibration isolator 140; mounting seat 141; flange 1411; spring assembly 142; spring support upper shell 1421; embedded recess Slot 14211; magnet mounting slot 14212; spring support lower housing 1422; rubber ring mounting slot 14221; limiting column mounting slot 14222; rubber spring 1423; limiting rubber ring 1424; magnet 1425; anti-falling bracket 1426; connecting plate 14261; fixing hole 14261a; limit strip hole 14261b; bracket connector 14262; bracket fixing piece 14263; height adjustment gasket 143; relief hole 1431; limit column 144; upper cylindrical end 1441; lower cylindrical end 1442; base 200; limit boss 400.

Detailed ways

In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the buried vibration isolator of the present invention is 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 Fig. 1-2, the linear track bed 100 of this embodiment is arranged on an elevated structure and is used to carry linear rails. The linear track bed 100 is composed of a plurality of track bed plates 110 connected end to end.

Figure 3 is a schematic plan view of the track bed plate in this embodiment.

As shown in Figure 1-3, the track bed plate 110 is arranged on the base 200. The base 200 is made of concrete and is cast and formed on the elevated beam. The track bed slab 110 includes a slab body 111 and a plurality of buried vibration isolators 140. The slab body 111 is a prestressed reinforced concrete slab, which is pre-cast in the factory and laid on the elevated structure to form part of the elevated beam span plate; The buried vibration isolators 140 are embedded in the plate body 111 in a group of two, and the two buried vibration isolators 140 in a group are respectively located directly below the two rails.

In this embodiment, the elevated beam is a 30m beam, and the plate body 111 includes two types: P3500 type and P4700 type. For the 30m beam, 7 P3500 type track bed boards and 1 P4700 type track bed board are laid. Among them, the size of the P3500 type track bed board is 3500mm×2400mm×260mm (length×width×thickness), and six pairs of fastening components 111 are arranged on it at equal intervals; the size of the P4700 type track bed board is 4700mm×2400mm×260mm (length × width × thickness), on which 8 pairs of sleepers 112 are arranged at equal intervals. The linear track is installed on the track bed plate 110 through sleepers 112 and buckle accessories.

As shown in FIG. 1 , a plurality of buried vibration isolators 140 are provided below the track bed plate 110 to reduce vibration and noise of the track when the train is running. Among them, three pairs of buried vibration isolators 140 are arranged at equal intervals below the P3500 type track bed slab. Each pair of buried vibration isolators 140 is arranged between two adjacent pairs of fastening components 112, and each buried vibration isolator 140 are all arranged directly below the rail; 4 pairs of buried vibration isolators 140 are arranged at equal intervals under the P4700 track bed plate. The specific installation method is the same as above.

In addition, the planar positions of each buried vibration isolator 140 are marked with dotted circles in FIGS. 1 and 3 . After installation, the structure of the buried vibration isolator 140 cannot be seen from above the track bed plate 110 .

Figure 4 is an exploded view of the structure of the buried vibration isolator in this embodiment.

As shown in FIG. 4 , the buried vibration isolator 140 includes a mounting base 141 , a spring assembly 142 , a height-adjusting gasket 143 and a limiting column 144 .

Figure 5 is a three-dimensional structural view of the mounting base in this embodiment.

Figure 6 is a three-dimensional structural view of the mounting base from different angles in this embodiment.

The mounting base 141 is an embedded part made of steel. When the concrete plate 111 is cast, it is pre-set at a corresponding position in the steel frame of the plate 111 . As shown in Figure 5-6, the mounting base 141 is in the shape of a circular cover, and its shell has a thickness of 8 mm to 12 mm. The upper end of the mounting base 141 has a ring of flange 1411 for increasing the adhesion and bearing capacity of the mounting base 141 .

The spring assembly 142 is generally cylindrical in shape as a whole, and its diameter is smaller than the inner diameter of the mounting base 141 .

Figure 7 is a cross-sectional view of the spring assembly in this embodiment.

The spring assembly 142 uses its own elastic deformation to absorb the vibration energy transmitted from the plate body 111 when the train is running, thereby reducing vibration and noise. As shown in FIGS. 4 and 7 , the spring assembly 142 includes an upper spring support housing 1421 , a lower spring support housing 1422 , a rubber spring 1423 and a plurality of limiting rubber rings 1424 .

The spring support upper housing 1421 is made of metal material and is in the shape of a circular cover. The inner surface of the top has a circular embedding groove 14211. The shape and size of the embedding groove 14211 match the upper end of the rubber spring 1423.

The spring support lower shell 1422 is also made of metal material and has a circular cover shape, and its diameter is smaller than the diameter of the spring support upper shell 1421, so the two can be fitted together, and the spring support upper shell 1421 is covered in The spring supports the outside of the lower housing 1422 to form a covering structure. The inner diameter of the spring support lower housing 1422 matches the rubber spring 1423. In addition, the outer periphery of the spring-supported lower housing 1422 has two annular rubber ring installation grooves 14221 for fitting and installing the limiting rubber ring 1424; the middle of the bottom surface of the spring-supported lower housing 1422 has a circular limiting post. Installation slot 14222 is used to install the limiting column 144.

The rubber spring 1423 is made of vulcanized rubber and has a circular plate-shaped upper end and a lower end. The upper and lower ends of the rubber spring 1423 are wrapped with circular metal plates so that the force borne by both ends can be Delivers more evenly to the middle. The middle part of the rubber spring 1423 is formed between the upper end and the lower end, and the middle part contracts radially inward. Viewed from the side, both sides of the rubber spring 1423 are inwardly curved arcs.

Rubber spring 1423 is available in a variety of stiffness specifications. During the production process, the stiffness of the rubber spring 1423 can be adjusted by adjusting the rubber composition and production parameters. In this embodiment, the rubber spring 1423 disposed in the middle of the plate body 111 has a relatively lower stiffness, and the rubber springs 1423 disposed on both sides of the plate body 111 in the length direction have a relatively higher stiffness. On both sides of the plate body 111, due to the existence of the cross section, relatively larger vibrations will be generated. Therefore, through such an arrangement, the overall vibration damping effect of the plate body 111 can be made more uniform.

The rubber spring 1423 is disposed inside the covering structure formed by fitting the upper spring supporting housing 1421 and the lower spring supporting housing 1422. The upper end of the rubber spring 1423 is embedded in the embedding groove 14211, and is fixed by bonding; the lower end of the rubber spring 1423 is embedded in the spring support lower housing 1422, and is also fixed by bonding, thereby forming an elastic whole. Vibration-absorbing components for cushioning.

The two limiting rubber rings 1424 are respectively fitted into the two rubber ring mounting grooves 14221 of the spring-supported lower housing 1422, and the limiting rubber rings 1424 protrude outward from the rubber ring mounting grooves 14221, and the limiting rubber rings 1424 protrude. The protruding part abuts the inner surface of the spring-supported upper housing 1421, thereby forming a lateral limit for the upper and lower housings.

Figure 8 is a three-dimensional structural view of the height-adjusting gasket in this embodiment.

Figure 9 is an orthographic view of the height-adjusting gasket in this embodiment.

The height-adjusting spacers 143 are used to adjust the installation height of the spring assembly 142, thereby adjusting the height of various places on the upper surface of the track bed plate 110. As shown in FIGS. 8-9 , the height-adjusting gasket 143 is a circular sheet-shaped metal piece, and its diameter is basically the same as the diameter of the spring assembly 142 . A circular relief hole 1431 is provided in the middle of the height-adjusting gasket 143 for the limiting post 144 to pass through during installation.

The height-adjusting gasket 143 has a variety of rules and has different thicknesses, ranging from 2 mm to 25 mm. According to the actual needs of the track, each vibration isolator can be provided with one or more height-adjusting pads 143.

Figure 10 is a three-dimensional structural view of the limiting column in this embodiment.

The limiting post 144 is used to fix the spring assembly 142 on the base 200 and limit its lateral displacement. As shown in FIGS. 4 and 10 , the limiting column 144 is a pin-shaped metal part with an upper cylindrical end 1441 and a lower cylindrical end 1442 . During installation, the upper cylindrical end 1441 is inserted into the limiting column installation groove 14222 at the bottom of the spring-supported lower housing 1422, and the lower cylindrical end 1442 is driven into the base 200 to be fixed. ) is 40mm~60mm. In addition, the diameter of the upper cylindrical end 1441 is larger than that of the lower cylindrical end 1442, so a step structure is formed at an upper position in the middle of the limiting column 144 for limiting the driving depth of the limiting column 144 when driving into the base 200.

FIG. 11 is a cross-sectional view of the buried vibration isolator in this embodiment, and FIG. 11 shows the structure of the buried vibration isolator after installation.

As shown in Figure 11, after the installation is completed, the mounting seat 141 is embedded in the lower part of the plate body 111, forming a circular mounting groove that opens downward, and the upper end of the spring assembly 142 (i.e., the spring support upper shell 1421) is installed in the mounting seat 141 , the lower end (that is, the spring-supported lower housing 1422) is placed on the base 200, and a limiting structure is formed through the limiting column 144.

In addition, the overall height of the spring assembly 142 and the height-adjusting gasket 143 is greater than the distance from the inner top surface of the mounting base 141 to the base 200. Therefore, after the installation is completed, the plate body 111 and the base 200 are not in direct contact, but form a floating plate. form, and is connected to the base 200 in a point contact manner through a plurality of spring assemblies 142 .

Figure 12 is a cross-sectional view of the linear track bed at the position of the limiting boss in this embodiment.

As shown in Figures 1 and 12, the linear track bed 100 is assembled from a plurality of the above-mentioned track bed plates 110 connected end to end, and the distance between two adjacent track bed plates 110 is 70 mm. There are also limiting grooves 114 on both sides of the plate body 111 in the length direction. The limiting grooves 114 are in the shape of a rectangular parallelepiped with a leading angle and are used for setting the limiting boss 400 during assembly. The limiting boss 400 is a rectangular parallelepiped concrete platform with a leading angle, 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 two adjacent track bed plates 110, thereby playing a lateral limiting role for the track bed plates 110.

Figure 13 is a flow chart for installing a buried vibration isolator in this embodiment.

As shown in Figure 13, based on the above structure, in this embodiment, the process of installing the buried vibration isolator 140 specifically includes the following steps:

In step S1, the limiting post 144 is driven into the predetermined position of the vibration isolator on the base 200, and then step S2 is entered.

In step S2, the height-adjusting gasket 143 and the spring assembly 142 are sequentially placed at the predetermined isolator position on the base 200, and then step S3 is entered.

The limiting post 144 passes through the relief hole 1431 in the middle of the height-adjusting gasket 143 and is embedded in the limiting post installation groove 14222 at the bottom of the spring assembly 142 .

In step S3, the prefabricated plate body 111 is placed on the base 200 through hoisting equipment, and each pre-embedded mounting seat 141 under the plate body 111 is aligned with each spring assembly 142 respectively, and then step S4 is entered.

After being aligned and put down, the upper end of each spring assembly 142 is embedded in each mounting seat 141, and the track bed plate 110 enters the spring support state.

Step S4, use a force detection tool to detect the force of all spring components 142, and determine whether there is looseness. If the determination is yes, step S5 will be entered. If the determination is no, the end state will be entered.

In step S5, the plate body 111 is lifted again by the hoisting equipment, and the height-adjusting gasket 143 under the unstressed spring assembly 142 is replaced according to the force detection result, and then returns to step S4.

All spring components 142 should be fully stressed. If it is found that some spring components 142 are loose and unstressed, lift the plate body 111 and recalculate the required thickness and height of the height-adjusting gasket 143 based on the force detection results. quantity, and correspondingly replace the height-adjusting gasket 143, and then return to step S4 to perform force detection again, and repeat this process until all spring components 142 are fully stressed, thereby ensuring the track vibration damping effect and operational safety.

This embodiment provides a buried vibration isolator, a track bed plate equipped with the buried vibration isolator, and a linear track bed. Compared with Embodiment 1, the difference lies in that the buried vibration isolator of this embodiment has The spring assembly adopts a double anti-removal structure with magnetic suction and bracket.

Figure 14 is a three-dimensional structural view of the spring assembly in this embodiment.

Figure 15 is a three-dimensional structural view of the spring assembly from different angles in this embodiment.

Figure 16 is an exploded structural view of the spring assembly in this embodiment;

As shown in Figures 14-16, the spring assembly 142 of the buried vibration isolator 140 of this embodiment also includes a magnet 1425 and an anti-separation bracket 1426.

The magnet 1425 is used to adsorb and fix the spring assembly 142 in the mounting base 141. In this embodiment, the mounting base 141 is made of steel, and the magnet 1425 is a strong magnet capable of adsorbing to the steel. The magnet member 1425 is cylindrical, with a through-mounting hole in the middle.

The middle part of the top surface of the spring-supported upper housing 1421 also has a circular magnet mounting groove 14212, the shape and size of which match the magnet 1425. The middle part of the bottom surface of the magnet installation groove 14212 also has a through-mounting hole. Therefore, the magnet 1425 can be fitted and installed in the magnet installation groove 14212 and fixed through the connecting piece.

The anti-detachment bracket 1426 is used to prevent the spring assembly 142 from detaching during transportation, thereby damaging the rubber spring and affecting construction efficiency. As shown in Figures 15-16, the anti-off bracket 1426 includes a pair of connecting plates 14261, a pair of bracket connecting parts 14262 and a plurality of bracket fixing parts 14263.

Figure 17 is a three-dimensional structural view of the connecting plate in this embodiment.

As shown in Figure 17, the connecting plate 14261 is a metal piece, L-shaped, and has two mutually perpendicular sections. One section is provided with two fixing holes 14261a, and the other section is provided with a limiting strip hole 14261b. The length direction of the hole 14261b is consistent with the extension direction of the segment.

The bracket connector 14262 is used to movably fix one end of the connecting plate 14261 with the limiting strip hole 14261b on the outer periphery of the spring-supported upper housing 1421. As shown in Figure 16, there is also a pair of bracket connection holes on the periphery of the spring support upper housing 1421, and the bracket connector 14262 passes through the limiting strip hole 14261b and the bracket connection hole on the spring support upper housing 1421 at the same time. One end of the connecting plate 14261 is connected to the spring-supported upper housing 1421, and this end can move in the vertical direction relative to the spring-supported upper housing 1421, and the moving range is the length range of the limiting strip hole 14261b.

The bracket fixing part 14263 is used to fix the other end of the connecting plate 14261 to the bottom of the spring-supported lower housing 1422.

Figure 18 is a three-dimensional structural view of the spring-supported lower housing in this embodiment.

As shown in Figure 18, the bottom of the spring-supported lower housing 1422 also has a pair of connecting plate inlay grooves 14223, the shape of which is consistent with the end of the connection plate 1461 with the fixing hole 14261a, and the connection plate inlay grooves 14223 penetrate outward. A pair of connecting plate inlay grooves 14223 are arranged oppositely. One end of the connecting plate inlay groove 14223 is provided with two through connecting member mounting holes, the positions of which correspond to the two fixing holes 14261a of the connecting member 1461. Therefore, this end of the connecting plate 1461 can be fitted into the connecting plate embedding groove 14223 and fixed by the bracket fixing member 14263, so that this end of the connecting plate 1461 plays a connecting and supporting role for the spring-supported lower housing 1422. .

In addition, in this embodiment, the bracket connecting part 14262 and the bracket fixing part 14263 are both screws.

Figure 19 is a cross-sectional view of the spring assembly in this embodiment. Figure 19 shows the state in which the spring assembly is installed as a whole.

As shown in Figure 19, due to the corresponding installation groove structure, the upper surface of the magnet 1425 is flush with the upper surface of the spring-supported upper housing 1421, and the lower surface of the L-shaped connecting plate 14261 is flush with the lower surface of the spring-supported lower housing 1422. The surface is flush, so that the upper and lower ends of the spring assembly 142 have the same shape as the first embodiment, and other components of the vibration isolator do not need to be adjusted. Therefore, the spring assembly 142 of this embodiment can be installed using the same method as the first embodiment.

Due to the double anti-detachment structure, the spring component 142 of the buried vibration isolator 140 in this embodiment will not detach during transportation. After the installation is completed, the spring component 142 can be adsorbed and fixed on the mounting base 141 middle.

In this embodiment, other structures, working principles, and installation methods of the buried vibration isolator are the same as those in Embodiment 1, so the description will not be repeated.

Embodiment functions and effects

The buried vibration isolator 140 provided according to this embodiment includes a mounting seat 141, a spring component 142 and a height-adjusting gasket 143. The mounting seat 141 is pre-buried under the track bed plate 110, and one end of the spring component 142 is embedded in the mounting seat 141. The other end is in contact with the base 200 through the height-adjusting gasket 143. Therefore, the buried vibration isolator 140 of this embodiment has a compact structure and a small number of parts. During installation, only the height-adjusting gasket 143 and the spring assembly are required in sequence. 142 is placed at each predetermined isolator position on the base 200, and then placed on the track bed plate 110 with the mounting seat 141 pre-embedded to complete the installation. The installation is easy and the construction time is short. In addition to the lifting equipment used to hoist the track bed plate 110 No other large-scale assembly equipment is required, so it is suitable for the construction of elevated tracks. The spring assembly 142 further includes a spring-supported upper housing 1421, a spring-supported lower housing 1422 and a rubber spring 1423. The rubber spring 1423 is arranged inside a wrapping structure formed by fitting the upper and lower housings. Therefore, the lateral direction of the rubber spring 1423 is affected by the wrapping structure. , the longitudinal deformation is reasonably restrained, and the influence of external debris, dust, etc. on the rubber spring 1423 is avoided. Therefore, it is conducive to maintaining the ideal stiffness of the rubber spring 1423, ensuring its vibration reduction effect, and improving its service life.

Furthermore, the buried vibration isolator 140 also includes a limiting post 144, one end of which is embedded in the limiting post installation groove 14222 at the bottom of the spring assembly 142, and the other end is driven into the base 200 for fixation. Therefore, the spring assembly 142 can be fixed through the limiting post 144. Being installed on the base 200 and limiting its lateral displacement further improves the reliability and safety of the buried vibration isolator 140.

In the second embodiment, a magnet 1425 is also fixed in the middle of the top surface of the spring assembly 142, which can adsorb and fix the spring assembly 142 in the steel mounting base 141. Therefore, the spring assembly 142 can be prevented from coming out of the mounting base 141. Further, Improve the reliability of the buried vibration isolator 140; the outside of the spring assembly 142 is also covered with an anti-detachment bracket 1426 composed of a pair of L-shaped connecting plates 14261, which can prevent the upper and lower shells of the spring assembly 142 from detaching during transportation. Since the two ends of the rubber spring 1423 are respectively bonded to the upper and lower shells, the separation of the upper and lower shells may also cause damage to the rubber spring 1423. Therefore, the anti-detachment bracket 1426 can protect the spring assembly 142 and the construction personnel, and make It is more convenient for construction workers to carry it, thereby improving the overall construction efficiency. In particular, one end of the L-shaped connecting plate 14261 is a strip hole 14261b, and the connecting member passes through both the strip hole 14261b and the mounting hole on the periphery of the spring support upper housing 1421. Therefore, this end of the L-shaped connecting plate 14261 can be positioned relative to the spring. The support upper housing 1421 moves in the vertical direction, and the movement range is the length range of the strip hole 14261b. That is to say, the setting of the anti-detachment bracket 1426 does not affect the elastic expansion and contraction of the spring assembly 142 within a reasonable range.

In addition, the buried vibration isolator 140 is arranged below the plate body 111, and the vibration isolator and its installation structure cannot be seen from above the track bed plate 110. Therefore, the buried vibration isolator 140 of this embodiment is used in the track bed plate 110 and the linear track bed. 100 also has the advantage of beautiful appearance. At the same time, because the buried vibration isolator 140 is only provided under the plate body 111, the buried vibration isolator 140 can be placed directly under the rail to achieve a better vibration reduction effect, unlike the traditional steel spring isolator. The vibrator is set on one side of the rail for later maintenance.

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 anti-detachment bracket 1426 includes a pair of L-shaped connecting plates 14261. The spring-supported upper shell 1421 and the spring-supported lower shell 1422 are respectively provided with slots for fitting and installing the pair of connecting plates 14261. and mounting holes. In an alternative, the anti-detachment bracket 1426 can also include more connecting plates 14261, evenly distributed along the circumference, and the spring-supported upper shell 1421 and the spring-supported lower shell 1422 respectively have more corresponding connecting plates 14261. Multiple inlay slots and mounting holes can also achieve corresponding technical effects.

Claims

A buried vibration isolator is provided below the track bed plate, and is characterized by including:

The mounting base is pre-embedded under the track bed board;

A spring component, the upper end is embedded in the mounting seat, and the lower end is in contact with the base; and

a height-adjusting spacer disposed between the spring assembly and the base,

Wherein, the spring assembly includes:

The spring supports the upper housing;

a spring-supported lower housing; and

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

Wherein, the mounting base is an embedded part made of metal,

The top of the spring-supported upper housing is provided with a magnet capable of adsorbing to the metal material, for adsorbing and fixing the spring-supported upper housing in the mounting seat.
The buried vibration isolator according to claim 1, further comprising:

limit column,

Wherein, the bottom of the spring-supported lower housing has a limiting column installation slot,

There is a relief hole in the middle of the height-adjusting gasket.

During installation, the upper end of the limiting column is embedded in the limiting column installation groove, the lower end is driven into the base and fixed, and the limiting column passes through the relief hole of the height-adjusting gasket.
The buried vibration isolator according to claim 3, characterized in that:

Wherein, the limiting column has a cylindrical upper cylindrical end and a cylindrical lower cylindrical end,

The diameter of the lower cylindrical end is smaller than that of the upper cylindrical end,

The length of the lower cylindrical end is 40mm～60mm.
The buried vibration isolator according to claim 1, further comprising:

Anti-falling bracket with:

At least one pair of connecting plates, one end is fixed below the spring-supported lower housing, and the other end is movably fixed on the periphery of the spring-supported upper housing; and

A plurality of connectors connect both ends of the connecting plate to the spring-supported lower housing and the spring-supported upper housing respectively.
The buried vibration isolator according to claim 5, characterized in that:

Wherein, the connecting plate is L-shaped and has two mutually perpendicular sections. One section is provided with a plurality of mounting holes, and the other section is provided with a limited strip hole.

The length direction of the limiting strip hole is consistent with the extension direction of the other section,

The bottom surface of the spring-supported lower housing has at least one pair of connecting plate inlays, the shape of which matches one end of the connecting plate,

One end of the connecting plate is embedded in the connecting plate slot and is fixed on the spring-supported lower housing through a plurality of connecting pieces.

The connecting piece passes through the limiting strip hole, and the other end of the connecting plate is installed on the periphery of the spring-supported upper shell, and the spring-supported upper shell can be positioned relative to the connecting plate Move, and the moving range is the length range of the limiting strip hole.
The buried vibration isolator according to claim 1, characterized in that:

Wherein, the upper end and lower end of the rubber spring are both circular,

The spring support upper housing is in the shape of a circular cover, and has a circular embedding groove in the middle of the inner surface. The embedding groove matches the upper end of the rubber spring.

The upper end of the rubber spring is fitted and bonded in the embedding groove,

The spring-supported lower housing is in the shape of a circular cover, and its interior matches the lower end of the rubber spring.

The lower end of the rubber spring is fitted and bonded in the spring supporting lower housing.
The buried vibration isolator according to claim 1, characterized in that:

Wherein, the thickness of the height-adjusting gasket is 2 mm to 25 mm, and the number is one or more.