Track vibration isolator and vibration reduction track

Abstract

According to the track vibration isolator and the vibration reduction track, the bearing plate of the track vibration isolator is pre-buried at the bottom of the floating track plate, the initial height adjusting gasket is arranged on the lower foundation, and the two ends of the elastic assembly of the track vibration isolator abut against the bearing plate and the initial height adjusting gasket respectively. Therefore, the elastic assembly can be completely located outside the lower portion of the floating slab, after track construction is completed, in the follow-up operation and maintenance process, overhaul and maintenance personnel can conveniently check the state of the elastic assembly through the gap between the floating slab and the lower foundation, extra detection instruments are not needed, and the detection efficiency is improved. Therefore, the efficiency and convenience of subsequent overhaul and maintenance can be improved, and the maintenance cost is reduced. In addition, due to the fact that the initial height adjusting gasket is arranged on the lower foundation, and then the elastic assembly is arranged on the initial height adjusting gasket, the elevation of the floating slab at the position of the vibration isolator can be adjusted more conveniently when the track vibration isolator is initially installed.

Description

Technical Field

[0001] This utility model belongs to the field of track vibration reduction and noise reduction technology, specifically relating to a track vibration isolator and a vibration-damping track. Background Technology

[0002] With the development of track vibration reduction technology and the increasing demands for it, more and more tracks are adopting vibration reduction techniques. Based on the level of vibration reduction requirements, these techniques are generally categorized into general vibration reduction, medium vibration reduction, high-level vibration reduction, and special vibration reduction. For special vibration reduction, multiple spring isolators combined with floating track slabs are typically used. While this method offers significant vibration reduction, it's crucial to ensure that all spring isolators are properly stressed, avoiding situations where one or more isolators are unstressed or under unilateral stress. This is essential to achieve the designed vibration reduction performance, thus requiring regular inspection and maintenance of the spring isolators in the track.

[0003] However, after such track construction is completed, the inspection and maintenance of spring vibration isolators are very inconvenient and time-consuming, with high maintenance costs, which limits their widespread application. Taking a rubber spring vibration isolator as an example, its main structure includes an outer sleeve embedded in a floating plate, rubber spring units that cooperate with the boss structure on the inner wall of the outer sleeve, and height adjustment shims and locking shims set above the rubber spring units. Once the construction of this type of spring vibration isolator is completed, most of it is contained inside the outer sleeve, making it difficult to observe the state of the rubber spring units from the outside, and thus making it impossible to detect in time whether some of the rubber spring units are not under stress. Currently, the inspection of such spring vibration isolators usually requires the use of additional testing instruments to detect the stress on the rubber spring units, or to measure the distance from their upper end to infer their stress, which is inconvenient to operate and has high inspection and maintenance costs. Utility Model Content

[0004] This utility model is designed to solve the above-mentioned problems, and aims to provide a track vibration isolator that is easier to install and maintain, as well as a vibration-damping track using the track vibration isolator. The technical solution adopted by this utility model is as follows:

[0005] This utility model provides a track vibration isolator, which is installed in a track having a floating plate and a lower foundation. The track vibration isolator has the following technical features: an initial height adjustment shim, disposed on the lower foundation, for adjusting the elevation of the floating plate at the track vibration isolator during initial installation; a load-bearing plate, disposed on the lower surface of the floating plate; and an elastic component, disposed between the load-bearing plate and the initial height adjustment shim, with its upper end abutting against the load-bearing plate and its lower end abutting against the initial height adjustment shim.

[0006] The track vibration isolator provided by this utility model may also have the following technical features: one or more split-type height-adjusting shims are disposed between the load-bearing plate and the upper end of the elastic component for further adjusting the elevation; and multiple fasteners, wherein the elastic component includes an upper end plate, a lower end plate and a rubber spring disposed between the upper end plate and the lower end plate, and the multiple fasteners are used to fix one or more of the stacked split-type height-adjusting shims on the upper end plate.

[0007] The track vibration isolator provided by this utility model may also have the following technical features: it further includes a support member, which is set as an embedded part at the bottom of the floating plate and includes the load-bearing plate. The support member further includes multiple connecting members, which are respectively fixed to the load-bearing plate and respectively fixedly connected to the floating plate.

[0008] The track vibration isolator provided by this utility model may also have the following technical features: the floating plate has a vibration isolator inspection hole, which is a circular through hole; the load-bearing plate is an annular steel plate, which is set at the lower end of the vibration isolator inspection hole; and the connecting member is a fixed steel bar, which is arranged in a ring around the floating plate outside the vibration isolator inspection hole.

[0009] The track vibration isolator provided by this utility model may also have the following technical features: it further includes a limiting member, which is cylindrical, wherein the initial height adjustment shim has a shim limiting hole in the middle, the lower end plate has a lower plate limiting hole in the middle, one end of the limiting member is fitted into the limiting member mounting hole on the lower base, and the other end is fitted into the shim limiting hole and the lower plate limiting hole, thereby limiting the elastic component horizontally.

[0010] The track vibration isolator provided by this utility model may also have the following technical features: the edge of the upper end plate has a plurality of upper plate spring fixing holes, the edge of the lower end plate has a plurality of lower plate spring fixing holes, the two ends of the rubber spring are the upper end and the lower end, respectively, both of which are circular plates, and the elastic component also includes a plurality of spring end fixing members, wherein the plurality of spring end fixing members are respectively installed in each of the upper plate spring fixing holes and press the upper end of the spring onto the upper end plate, and the plurality of spring end fixing members are respectively installed in each of the lower plate spring fixing holes and press the lower end of the spring onto the lower end plate.

[0011] The track vibration isolator provided by this utility model may also have the following technical features: the elastic component further includes two auxiliary fixing members, which are elastic compression rings, and the spring end fixing members are fastening bolts. One of the auxiliary fixing members is fitted onto the multiple spring end fixing members on the upper end plate and is pressed onto the upper end plate by the multiple spring end fixing members. The other auxiliary fixing member is fitted onto the multiple spring end fixing members on the lower end plate and is pressed onto the lower end plate by the multiple spring end fixing members.

[0012] This utility model provides a vibration-damping track, which has the following technical features: a lower foundation; multiple floating slabs; and multiple track vibration isolators, wherein each of the floating slabs is mounted on the lower foundation by multiple track vibration isolators.

[0013] The vibration-damping track provided by this utility model may also have the following technical features: the lower part of both ends of the floating plate in the width direction has a strip-shaped groove, forming a lateral opening between the floating plate and the lower foundation; the load-bearing plate of the track vibration isolator is disposed at the top surface of the strip-shaped groove.

[0014] Functions and effects of utility models

[0015] According to the track vibration isolator and vibration-damping track provided by this utility model, since the load-bearing plate of the track vibration isolator is pre-embedded at the bottom of the floating track slab, the initial height adjustment shim is placed on the lower foundation, and both ends of its elastic component abut against the load-bearing plate and the initial height adjustment shim respectively, the elastic component can be completely located outside the floating slab. After the track construction is completed, during subsequent operation and maintenance, maintenance personnel can conveniently check the condition of the elastic component using the gap between the floating slab and the lower foundation without the need for additional testing instruments. Therefore, it can improve the efficiency and convenience of subsequent maintenance and reduce maintenance costs. In addition, since the initial height adjustment shim is set on the lower foundation and then the elastic component is set on it, the elevation of the floating slab at the vibration isolator can be adjusted more conveniently during the initial installation of the track vibration isolator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the track vibration isolator in Embodiment 1 of this utility model;

[0017] Figure 2 yes Figure 1 Enlarged view of the inner part of frame A;

[0018] Figure 3 This is a cross-sectional schematic diagram of the vibration-damping track in Embodiment 1 of this utility model;

[0019] Figure 4This is a top view schematic diagram of the vibration-damping track in Embodiment 1 of this utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the vibration-damping track structure in Embodiment 2 of this utility model.

[0021] Figure label:

[0022] Vibration damping track 100; floating plate 10; plate body 11; strip groove 112; vibration isolator inspection hole 113; side opening 115; drainage ditch inspection hole 116; mating surface 117; lower plate protrusion 12; bearing platform 13; boss mating groove 14; track vibration isolator 20; support member 21; load-bearing plate 211; connector 212; support member 21; elastic component 22; upper end plate 221; upper plate spring fixing hole 2211; upper plate gasket fixing hole 2212; lower end plate 222; lower plate spring Fixing hole 2221; Lower plate limiting hole 2222; Rubber spring 223; Upper end of spring 2231; Spring body 2232; Lower end of spring 2233; Spring end fixing piece 224; Auxiliary fixing piece 225; Initial height adjustment shim 23; Shim limiting hole 231; Limiting piece 24; Split height adjustment shim 25; Shim fixing piece 26; Lower foundation 30; Base drainage ditch 31; Limiting piece mounting hole 32; Limiting boss 40; Rail 50; Tunnel 200; Arc-shaped bottom surface 210. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the track vibration isolator and vibration-damping track of this utility model will be specifically described below in conjunction with the embodiments and accompanying drawings.

[0024] <Example 1>

[0025] Figure 1 This is a schematic diagram of the track vibration isolator in this embodiment, showing a partial cross-sectional view of the track vibration isolator. Figure 2 yes Figure 1 Enlarged view of the inner part of frame A.

[0026] like Figure 1 and Figure 2As shown, the track vibration isolators 20 are installed between the floating slab 10 (also called floating track slab) and the lower foundation 30. They include elastic components. The floating slab 10 is "suspended" on the lower foundation 30 by multiple track vibration isolators 20. The floating slab 10 itself does not contact the lower foundation 30, forming a certain gap between them. Two rows of sleepers, two rails, and multiple rail fasteners for fixing the rails are installed above the floating slab 10. When a train passes over the floating slab 10, the train load causes the floating slab 10 to sink and shift, and the elastic components of the track vibration isolators 20 undergo a certain degree of compression deformation, reducing the transmission of wheel-rail vibration to the lower foundation 30 during train operation, thereby reducing the impact of vibration and secondary structural noise generated by the line operation on the surrounding environment.

[0027] Specifically, the track vibration isolator 20 includes a support member 21, an elastic component 22, one or more initial height adjustment shims 23, and a limiting member 24. Optionally, the track vibration isolator 20 may also include one or more split height adjustment shims 25 and multiple shim fixing members 26.

[0028] The support member 21 includes a load-bearing plate 211 and multiple connecting members 212. The load-bearing plate 211 is disposed at the bottom of the floating plate 10, with its bottom surface located outside the floating plate 10. It is used to abut against the upper end of the elastic component 22, thus serving as a load-bearing component at the top of the elastic component 22 to transmit force. The connecting members 212 are embedded in the floating plate 10 to connect with the floating plate 10, making the connection between the support member 21 and the floating plate 10 more reliable.

[0029] In this embodiment, the floating plate 10 is a concrete slab with multiple vibration isolator inspection holes 113, which are circular through holes extending along the thickness direction of the floating plate 10, with a diameter smaller than the diameter of the end of the elastic component 22. The load-bearing plate 211 is a ring-shaped steel plate, with the diameter of its central hole being basically the same as the diameter of the vibration isolator inspection holes 113, and is arranged around the lower end of the vibration isolator inspection holes 113. The connecting member 212 is a fixed reinforcing bar, columnar in shape, with one end welded and fixed to the upper surface of the load-bearing plate 211, and its length direction being approximately perpendicular to the surface direction of the load-bearing plate 211. Multiple connecting members 212 are distributed in a ring around the floating plate 10 around the vibration isolator inspection holes 113. When casting the floating plate 10, the support member 21 is pre-embedded in the plate preparation mold as a pre-embedded part, and after the floating plate 10 solidifies, the support member 21 is firmly integrated with it.

[0030] In an alternative, the floating plate 10 may not have the vibration isolator inspection hole 113, and the coupling 212 may also have other shapes, such as a bent column.

[0031] The elastic component 22 is used to achieve vibration isolation and damping effects. It includes an upper end plate 221, a lower end plate 222, a rubber spring 223, a spring end fixing component 224, and an auxiliary fixing component 225.

[0032] The upper end plate 221 and the lower end plate 222 are roughly circular in shape, designed to ensure that the force transmitted from the support member 21 is applied more evenly to the rubber spring 223. The upper end plate 221 has multiple upper plate spring fixing holes 2211 along its edge, which are either circular through holes or through threaded holes; the upper end plate 221 also has multiple upper plate gasket fixing holes 2212 near its center. The lower end plate 222 has multiple lower plate spring fixing holes 2221 along its edge, which are either circular through holes or through threaded holes; the lower end plate 222 has a lower plate limiting hole 2222 in its center, which is a circular through hole.

[0033] In this embodiment, the upper end plate 221 and the lower end plate 222 have basically the same shape and size, and can use the same standard parts, thus making the production of the elastic component 22 more convenient. Multiple upper plate spring fixing holes 2211 are formed in multiple groups, each group containing two adjacent upper plate spring fixing holes 2211. These multiple groups of upper plate spring mounting holes 2211 are evenly distributed along the edge (one circumference) of the upper end plate 221. The multiple lower plate spring fixing holes 2221 on the lower end plate 222 are also formed in the same multiple groups.

[0034] The rubber spring 223 is a solid flat cylinder, comprising an integrally formed and coaxially arranged upper end portion 2231, a main body portion 2232, and a lower end portion 2233. Both the upper end portion 2231 and the lower end portion 2233 are circular plates. The upper and lower ends of the main body portion 2232 are connected to the upper end portion 2231 and the lower end portion 2233, respectively. The main body portion 2232 is a cylinder with a gradually changing diameter, with the largest diameter at both ends and the smallest diameter at the axially upward center.

[0035] The spring end fixing member 224 and the auxiliary fixing member 225 are used to fix the upper end 2231 and the lower end 2233 of the rubber spring 223 to the upper end plate 221 and the lower end plate 222 respectively, so that the elastic component 22 is more stable during use.

[0036] In this embodiment, the spring end fixing member 224 is a fastening bolt, and the auxiliary fixing member 225 is an elastic clamping ring. Multiple fastening bolts are respectively installed in the upper plate spring fixing holes 2211 of the upper end plate 221. One side of the nuts of these fastening bolts presses against the lower edge of the upper end 2231 of the spring. The elastic clamping ring is fitted around the outer periphery of the multiple fastening bolts on the upper end plate 221, and is also pressed against the other side of the nuts of the fastening bolts. Similarly, multiple fastening bolts are respectively installed in the lower plate spring fixing holes 2221 of the lower end plate 222. One side of the nuts of these fastening bolts presses against the upper edge of the lower end 2233 of the spring. Another elastic clamping ring is fitted around the outer periphery of the multiple fastening bolts on the lower end plate 222, and is also pressed against the other side of the nuts of the fastening bolts.

[0037] In an alternative solution, the upper and lower ends of the rubber spring 223 can also be fixed to the upper end plate 221 and the lower end plate 222 in other ways, such as by using other fasteners or by bonding.

[0038] An initial height adjustment shim 23 is disposed between the elastic component 22 and the lower foundation 30. It is used to adjust the height of the elastic component 22 during track construction (i.e., when the track vibration isolator 22 is initially installed on the lower foundation 30) to achieve a predetermined elevation. The initial height adjustment shim 23 is an annular sheet with a shim limiting hole 231 in its center, which is a circular through hole.

[0039] In this embodiment, the initial height adjustment shim 23 has various specifications and different thicknesses. The initial height adjustment shim 23 with the most suitable thickness can be selected according to the required elevation. The number of shims in the track vibration isolator 20 is one.

[0040] The limiting member 24 is cylindrical. On the lower foundation 30, each predetermined vibration isolator installation position is provided with a matching limiting member mounting hole 32. The lower end of the limiting member 24 is fitted into the limiting member mounting hole 32, and the upper end is fitted into the shim limiting hole 231 of the initial height adjustment shim 23 and the lower plate limiting hole 2222 of the lower end plate 222, thereby playing a horizontal limiting role for the elastic unit 22 and preventing it from horizontally displacing or deflecting relative to the lower foundation 30.

[0041] The split-type height adjustment shim 25 is used to adjust the elevation of the floating slab 10 after track construction is completed and during subsequent operation and maintenance. For example, if the lower foundation 30 experiences slight settlement, one or more split-type height adjustment shims 25 can be added to overcome the resulting problems. The structure of the split-type height adjustment shim 25 is similar to that of the initial height adjustment shim 23, also in the shape of a circular sheet. The difference is that it is relatively thinner, and the split-type height adjustment shim 25 is provided with multiple shim mounting holes, which correspond to the multiple upper plate shim fixing holes 2212 on the upper end plate 221.

[0042] Optionally, a variety of separate height adjustment shims 25 of different specifications and thicknesses are provided, and the most suitable separate height adjustment shim 25 can be selected according to the height to be adjusted.

[0043] Optionally, only one type of split height adjustment shim 25 of one thickness is provided, and one or multiple split height adjustment shims 25 can be selected according to the required adjustment height.

[0044] The shim fixing member 26 is used to fix one or more separate height-adjustable shims 25 to the upper end plate 221, so that the track vibration isolator 20 after the separate height-adjustable shims 25 are installed can maintain stable performance. In this embodiment, the shim fixing member 26 is a bolt, which passes through the shim mounting holes on the separate height-adjustable shims 25 and the corresponding upper plate shim fixing holes 2212 on the upper end plate 221, thereby fixing the separate height-adjustable shims 25 to the upper end plate 221.

[0045] The following will exemplarily illustrate a vibration-damping track structure employing this track isolator.

[0046] Figure 3 This is a cross-sectional schematic diagram of the vibration-damping track in this embodiment. Figure 4 This is a top view of the vibration-damping track in this embodiment.

[0047] like Figure 3 and Figure 4 As shown, the vibration damping track 100 includes multiple floating plates 10, multiple track vibration isolators 20 as described above, a lower foundation 30, multiple limiting bosses 40, two steel rails 50, and multiple fasteners (not shown in the figure).

[0048] Multiple floating slabs 10 are laid on top of the lower foundation 30 and arranged in sequence. The length direction of each floating slab 10 is basically consistent with the extension direction of the track. One end of the length direction of two adjacent floating slabs 10 is connected, and their opposing ends also have boss mating grooves 14. Two opposing boss mating grooves 14 can be spliced ​​to form a boss setting hole with a rounded rectangular cross-section. A limiting boss 40 is set in the boss setting hole, and an elastic pad (not shown in the figure) is also set between the limiting boss 40 and the side of the boss mating groove 14, thereby playing a horizontal limiting role for the floating slabs 10.

[0049] The floating slab 10 can be a precast concrete slab, comprising an integrally formed slab body 11, a lower protrusion 12, and multiple rail support platforms 13. The slab body 11 is a flat slab. The lower protrusion 12 protrudes downward from the center of the lower surface of the slab body 11 (the center in the width direction). The lower protrusion 12 is also roughly rectangular, with a width and thickness smaller than those of the slab body 11, respectively. The centerlines of the two protrusions in the width direction are aligned vertically, making the cross-section of the middle section of the floating slab 10 in the length direction roughly T-shaped. The thickness of the middle section of the floating slab 10 in the width direction is greater than the thickness of its two ends. A pair of elongated grooves 112 are formed on the lower sides of the slab body 11 and on the outer sides of the lower protrusion 12 for the installation and maintenance of the track vibration isolators 20.

[0050] A pair of strip-shaped grooves 112 are of the same size and are arranged in a mirror-symmetrical manner along the center line of the width direction of the floating plate 10. The cross-section of the strip-shaped grooves 112 in the length direction of the floating plate 10 is approximately a flat rectangle. The top surface of the strip-shaped grooves 112 (that is, the lower surfaces of both sides of the plate body 11) is perpendicular to the thickness direction of the floating plate 10.

[0051] The lower foundation 30 is a concrete base, typically cast on-site during track construction. A base drainage ditch 31 extending along the track's extension direction is formed in the center of the upper surface of the lower foundation 30. In this embodiment, the width of the lower protrusion 12 of the track slab is greater than the width of the base drainage ditch 31. Furthermore, a drainage ditch inspection hole 116 is provided in the center of the precast track slab 10; this hole is a circular or square through-hole that extends along the thickness direction of the precast track slab 10 and is positioned above the base drainage ditch 31.

[0052] Two steel rails 50 are respectively supported on two rows of rail bearing platforms 13. Each rail bearing platform 13 is equipped with fasteners, and the two steel rails 50 are fixed by multiple steel rail fasteners.

[0053] In this embodiment, each floating plate 10 has a length of 3570mm, a width of 2700mm, and a thickness of 340mm in the middle. The width of the lower protrusion 12 is 1604mm, and the width of the strip-shaped groove 112 is 548mm. Each floating plate 10 is provided with twelve support platforms 13, i.e., six in each row, and the distance between the center lines of two adjacent support platforms 13 in each row is 600mm. The distance between the two support platforms 13 closest to the end and the outer end face of the corresponding end is 285mm.

[0054] Each floating slab 10 is provided with six vibration isolator inspection holes 113, i.e., three in each row, which are spaced apart between two adjacent support platforms 13 and close to the outer edge of the support platform 13. The distance from the center of each vibration isolator inspection hole 113 to the center line 10A (center line in the width direction) of the floating slab 10 is 940mm. Accordingly, each floating slab 10 is equipped with six track vibration isolators 20.

[0055] During the construction of the aforementioned vibration-damping track 100, initial height adjustment shims 23 of appropriate thickness can be selected based on the measurement results of the predetermined vibration isolator installation positions on the lower foundation 30. The limiting component 24, initial height adjustment shims 23, and elastic components 22 are then assembled. Next, the prefabricated floating slab 10 is transported to the upper level, aligned with the multiple elastic components 22 below, and then lowered so that the elastic components 22 abut against the load-bearing plate 211 at the bottom of the floating slab 10.

[0056] Functions and effects of Example 1

[0057] According to the track vibration isolator and vibration-damping track provided in this embodiment, since the load-bearing plate of the track vibration isolator is pre-embedded at the bottom of the floating track slab, the initial height adjustment shim is placed on the lower foundation, and both ends of its elastic component abut against the load-bearing plate and the initial height adjustment shim respectively, the elastic component can be completely located outside the floating slab. After the track construction is completed, during subsequent operation and maintenance, maintenance personnel can conveniently check the status of the elastic component using the gap between the floating slab and the lower foundation without the need for additional testing instruments. Therefore, the efficiency and convenience of subsequent maintenance can be improved, and maintenance costs can be reduced. In addition, since the initial height adjustment shim is set on the lower foundation, and then the elastic component is set on it, the elevation of the floating slab at the vibration isolator can be adjusted more conveniently during the initial installation of the track vibration isolator.

[0058] In this embodiment, the floating plate is provided with a vibration isolator inspection hole, the load-bearing plate is a circular plate arranged around the lower end of the hole, and the elastic component has rigid end plates at both ends. Therefore, while it can effectively bear the force, it will not block the vibration isolator inspection hole, making it more convenient for maintenance personnel to check the installation position and status of the elastic component.

[0059] Furthermore, the load-bearing plate is part of the pre-embedded support component, which also includes multiple connecting parts that are welded and fixed to the load-bearing plate. Therefore, it can be more firmly and reliably connected with the floating plate. Moreover, since the multiple connecting parts are strip-shaped and distributed in a ring around the floating plate body around the vibration isolator inspection hole, they will not obstruct the vibration isolator inspection hole.

[0060] Furthermore, the elastic component includes a rubber spring and upper and lower end plates. The upper and lower ends of the rubber spring are fixed to the upper and lower end plates by multiple fastening bolts and elastic compression rings, which makes the rubber spring more uniformly stressed and the elastic component more stable and reliable as a whole. The components will not shift in relative position due to the vibration energy generated by the train passing by, thus ensuring a long-term stable vibration reduction effect.

[0061] Furthermore, the track vibration isolator can also include one or more separate height adjustment shims and corresponding fasteners. Therefore, during subsequent operation, if the lower foundation settles or other situations occur and the elevation of the floating slab needs to be adjusted again, one or more separate height adjustment shims can be fixed on top of the elastic component to achieve further fine adjustment of the elevation, without having to disassemble the vibration isolator structure to replace the initial height adjustment shims, making subsequent maintenance more convenient.

[0062] <Example 2>

[0063] This embodiment provides a track vibration isolator and a vibration-damping track. In this embodiment, the same symbols are assigned to the same components as in Embodiment 1, and the corresponding descriptions are omitted.

[0064] Figure 5 This is a cross-sectional schematic diagram of the vibration-damping track section structure in this embodiment.

[0065] like Figure 5 As shown in the figure, this embodiment exemplarily illustrates another vibration-damping track 100 using the above-mentioned track vibration isolator 20. The difference from the first embodiment is that the vibration-damping track 100 in this embodiment is set in the tunnel 200, the tunnel 200 has an arc-shaped bottom surface 210, the lower foundation 30 is set on the arc-shaped bottom surface 210, and the two ends of the floating plate 10 in the width direction are also close to the arc-shaped bottom surface 210 on both sides of the lower foundation 30.

[0066] The floating plate 10 has a notch at both ends of its main body 11 in the width direction, forming a pair of mating surfaces 117. From the middle of the main body 11 to both ends in the width direction, the mating surfaces 117 are inclined upward relative to the width direction. Due to the presence of the mating surfaces 117, the groove width of the strip groove 112 is smaller than that in Embodiment 1. In this embodiment, the groove width is 348 mm, but it is still significantly larger than the diameter of the track vibration isolator 20.

[0067] Because of the mating surface 117, when the floating plate 10 of this embodiment is laid on the lower foundation 30 in the tunnel during construction, a channel with sufficient height will be formed between the mating surface 117 and the arc-shaped bottom surface of the tunnel. Lifting tools or lifting equipment can use this channel to extend into the strip groove 112, thereby making it easier to carry out construction in the tunnel.

[0068] In this embodiment, the other structures are the same as in Embodiment 1, so they will not be described again.

[0069] It is understood that the track vibration isolator 20 provided by this utility model can be used not only in the above two types of vibration-damping tracks, but also in other floating plate vibration-damping tracks, such as the vibration-damping tracks in the prior art that use floating plates with a flat lower surface.

[0070] The above embodiments are merely illustrative of specific implementations of this utility model, and the utility model is not limited to the scope of the above embodiments. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only for illustrating the principles of the utility model. Various changes and modifications can be made to the utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0071] For example, the above embodiments provide the dimensions of the floating slab and the corresponding number of track isolators in a single floating slab. In alternative embodiments, the floating slab can also be of other dimensions and have a corresponding number of track isolators. For example, the length of the prefabricated track slab can be greater than or equal to 5000 mm, and more than eight track isolators can be installed on it.

[0072] For example, in the above embodiment, the elastic component includes an upper end plate, a lower end plate, and a rubber spring disposed between the two. In an alternative, the elastic component may also adopt other structures, such as an upper housing and a lower housing in the shape of a dome, which are slidably fitted together, with the rubber spring disposed inside the upper and lower housings.

Claims

1. A track vibration isolator, installed in a track having a floating slab and a lower foundation, characterized in that, include: An initial height adjustment shim is provided on the lower foundation to adjust the elevation of the floating plate at the track isolator during the initial installation of the track isolator. A load-bearing plate is disposed on the lower surface of the floating plate; and An elastic component is disposed between the load-bearing plate and the initial height adjustment shim, with its upper end abutting against the load-bearing plate and its lower end abutting against the initial height adjustment shim.

2. The track vibration isolator according to claim 1, characterized in that, Also includes: One or more separate height-adjusting shims are disposed between the support plate and the upper end of the elastic component for further adjustment of the elevation; as well as Multiple fasteners, The elastic component includes an upper end plate, a lower end plate, and a rubber spring disposed between the upper end plate and the lower end plate. Multiple fasteners are used to secure one or more of the stacked split height-adjusting shims to the upper end plate.

3. The track vibration isolator according to claim 2, characterized in that, Also includes: The support component, as an embedded part, is set at the bottom of the floating slab, and includes the load-bearing plate. The support member also includes multiple connecting members, which are fixed to the load-bearing plate and fixedly connected to the floating plate.

4. The track vibration isolator according to claim 3, characterized in that: in, The floating plate has a vibration isolator inspection hole, which is a circular through hole. The load-bearing plate is a ring-shaped steel plate, located at the lower end of the inspection hole of the vibration isolator. The connecting component is a fixed reinforcing bar, which is arranged in a ring around the floating plate outside the inspection hole of the vibration isolator.

5. The track vibration isolator according to claim 2, characterized in that, Also includes: The limiting component is cylindrical. The initial height adjustment shim has a shim limiting hole in the middle. The lower end plate has a lower plate limiting hole in the middle. One end of the limiting member is fitted into the limiting member mounting hole on the lower base, and the other end is fitted into the gasket limiting hole and the lower plate limiting hole, thereby limiting the elastic component horizontally.

6. The track vibration isolator according to claim 2, characterized in that: in, The edge of the upper end plate has multiple upper plate spring fixing holes. The lower end plate has multiple lower plate spring fixing holes distributed along its edge. The rubber spring has two ends, the upper end and the lower end, both of which are circular plates. The elastic component also includes multiple spring end retainers. Multiple spring end fixing members are respectively installed in the upper plate spring fixing holes and the upper end of the spring is pressed against the upper end plate. In addition, multiple spring end fixing members are respectively installed in the lower plate spring fixing holes and the lower end of the spring is pressed against the lower end plate.

7. The track vibration isolator according to claim 6, characterized in that: in, The elastic component also includes two auxiliary fixing members, which are elastic compression rings. The spring end fixing component is a fastening bolt. One of the auxiliary fasteners is fitted onto the plurality of spring end fasteners on the upper end plate and is pressed against the upper end plate by the plurality of spring end fasteners; another auxiliary fastener is fitted onto the plurality of spring end fasteners on the lower end plate and is pressed against the lower end plate by the plurality of spring end fasteners.

8. A vibration-damping track, characterized in that, include: Substructure; Multiple floating panels; as well as Multiple track vibration isolators are used, and each of the floating slabs is mounted on the lower foundation via multiple track vibration isolators. The track vibration isolator is the track vibration isolator according to any one of claims 1-7.

9. The vibration-damping track according to claim 8, characterized in that: in, The floating slab has strip-shaped grooves at both lower ends in the width direction, forming lateral openings between the floating slab and the lower foundation. The load-bearing plate of the track vibration isolator is located on the top surface of the strip-shaped groove.

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