Plate end sharing type vibration isolator

Abstract

The utility model belongs to the technical field of rail transit floating slab ballast beds, and relates to a prefabricated floating slab ballast bed accessory, in particular to a slab end sharing type vibration isolator arranged between adjacent floating slabs in a prefabricated floating slab ballast bed. The utility model comprises an upper shell, an elastic element and a lower shell, the upper shell is respectively provided with a horizontal positioning structure corresponding to the adjacent precast slabs supported and matched with the upper shell, and the horizontal positioning structure comprises a threaded connection hole or a horizontal limiting through hole which is directly arranged on the upper shell. Or a threaded connecting hole or a horizontal limiting through hole is formed in the auxiliary connecting piece fixed on the upper shell. The elastic vibration isolation device has the functions of elastic vibration isolation, elastic limiting and shearing force transmission, is simple in structure and convenient to assemble, horizontal limiting is easier to achieve, the risk that a shearing force transmission element or a prefabricated slab is damaged is greatly reduced, and the elastic vibration isolation device has the advantages of being compact in structure, long in service life and the like. The prefabricated floating track bed can be widely applied to prefabricated floating track bed projects of rail transit lines such as subways and elevated light rails.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit floating slab track bed technical field relates to prefabricated floating slab track bed accessory, especially prefabricated floating slab track bed in the multifunctional plate end shared vibration isolator arranged between adjacent floating slab. BACKGROUND

[0002] The rail transit construction of our country develops rapidly, in the existing rail transit field vibration reduction and noise reduction technology, the most successful practical application is floating slab track bed technology, and its vibration isolation efficiency is high, and the working performance is stable, and has become the mainstream technology in the industry. In order to further improve the construction speed, improve the engineering quality, in recent years, the prefabricated slab track bed technology using prefabricated track slab has been widely applied. Typical such as Chinese patent CN103306168A discloses a prefabricated floating slab track bed and its construction method, the floating slab is 1.2-8m prefabricated short plate along the longitudinal length of the steel rail, the plate end shared vibration isolator is arranged below the end of the plate body along the longitudinal direction of the prefabricated short plate, the plate end shared vibration isolator top plate is provided with plate end horizontal limiting device, the installation gap of the plate end shared vibration isolator is arranged at the end of the plate body along the longitudinal direction of the prefabricated short plate, the installation gap is provided with the side vertical surface corresponding to the plate end horizontal limiting device, and the prefabricated short plates are connected by shear hinge. In practice, because the middle shear hinge is inconvenient to repair and replace, the traditional plate end shared vibration isolator generally adopts the upper shear hinge. However, it is found in the application process that the plate end shared vibration isolator has the following problems: (1) the upper shear hinge has a high stress point, and the bending moment in the working process is large, so that the shear core rod in the upper shear hinge is broken or the fixing bolt is broken, and the local fatigue damage of the plate body at the fixed connection of the floating slab is caused in serious cases;(2) when the plate end horizontal limiting device cooperates with the side vertical surface at the installation gap of the plate body end, the gap between the two is not uniform, and it is not easy to adjust. How to solve the above problems becomes a difficult problem that plagues the industry. CONTENT OF UTILITY MODEL

[0003] The utility model aims at overcoming the above-mentioned defects, providing a plate end shared vibration isolator that integrates vibration isolation and shear force transmission functions, is more reasonable in stress and can effectively avoid damage to the floating slab and shear hinge.

[0004] The plate end shared vibration isolator of the utility model is realized in the following manner: an upper shell, an elastic element and a lower shell are provided, horizontal positioning structures are arranged on the upper shell corresponding to the adjacent prefabricated plates supported and matched by the upper shell, the horizontal positioning structures include threaded connection holes or horizontal limiting through holes arranged directly on the upper shell or threaded connection holes or horizontal limiting through holes arranged in auxiliary connecting pieces fixed on the upper shell.

[0005] In order to facilitate connection and fixation with the foundation, the lower shell can also be provided with mounting and fixing through holes.

[0006] According to the different elastic elements adopted, the specific structure of the plate end shared vibration isolator of the utility model is different, and the plate end shared vibration isolator of the utility model can also include a damping element if necessary. Generally, the damping element is arranged between the upper shell and the lower shell and is arranged in parallel with the elastic element, and the damping element includes a viscous damper, a small hole throttling damper, an eddy current damper or an elastic shear damper and other specific forms of damping devices; as another typical application mode, when the elastic element is a spiral steel spring, the damping element is a damping material arranged in the lower shell, and the spiral steel spring is partially arranged in the damping material; as a third typical application scheme, the elastic element is a disc spring or a leaf spring, at least two disc springs or leaf springs are arranged, the damping element is a damping material layer arranged between adjacent disc springs or adjacent leaf springs, or the damping element is a damping material, and the disc spring or the leaf spring is at least partially arranged in the damping material; in a fourth typical application scheme, the elastic element is a rubber spring, a polyurethane elastic pad or a rubber metal composite spring, and the rubber spring, the polyurethane elastic pad or the rubber metal composite spring simultaneously serves as the damping element.

[0007] In order to improve the shear capacity and shear transmission capacity, in the plate end shared vibration isolator of the utility model, a reinforcing rib plate is fixedly arranged on the lower surface of the upper shell along the length direction of the steel rail.

[0008] In order to conveniently adjust the height and level of the prefabricated slab, the plate end shared vibration isolator of the utility model can also include an adjusting pad. Preferably, the adjusting pad is arranged on the top surface of the upper shell, and a clearance through hole is arranged on the adjusting pad corresponding to the threaded connection hole.

[0009] In application, the plate end shared vibration isolator of the utility model is placed at the plate end part of adjacent prefabricated slabs, the plate end shared vibration isolator of the utility model is used to simultaneously support two adjacent prefabricated slabs, after the height and level are adjusted, the prefabricated slabs are locked by cooperating with the horizontal positioning structure by using the threaded connecting rod, the plate end shared vibration isolator of the utility model is connected with the prefabricated slabs to form an integral whole, the mutual positioning of the plate end shared vibration isolator of the utility model and the prefabricated slabs in the horizontal direction is realized by the friction force between the top surface of the plate end shared vibration isolator of the utility model and the prefabricated slabs and the geometric limiting of the threaded connecting rod, and finally the plate end shared vibration isolator of the utility model is fixed on the foundation by using the foundation bolt.

[0010] The utility model discloses a plate end shared type vibration isolator, through setting up horizontal positioning structure on the upper casing, utilizing horizontal positioning structure and screw connecting link cooperation directly to lock and fix the utility model plate end shared type vibration isolator and prefabricated plate, realize the mutual positioning of plate end shared type vibration isolator and prefabricated plate in horizontal direction.

[0011] In summary, the utility model discloses a plate end shared type vibration isolator, and it has the functions of elastic vibration isolation, elastic limiting and shear force transmission, and it has the advantages of simple structure, easy assembly, easy horizontal limiting, improved stress on the prefabricated plate, reduced risk of damage to the shear force transmission element or the prefabricated plate, compact structure, long service life, etc., and it can be widely used in prefabricated floating bed engineering of metro, elevated light rail and other rail transit lines. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Figure 1 is a structural schematic view of the utility model plate end shared type vibration isolator.

[0013] Figure 2 Figure 2 is an A-A sectional view of the utility model plate end shared type vibration isolator. Figure 1

[0014] Figure 3 Figure 3 is an application schematic view of the utility model plate end shared type vibration isolator. Figure 1

[0015] Figure 4 Figure 4 is a B-B sectional enlarged view of the utility model plate end shared type vibration isolator. Figure 3

[0016] Figure 5 ​​​This is the second structural schematic diagram of the plate-end shared vibration isolator of this utility model.

[0017] Figure 6 for Figure 5 CC section view.

[0018] Figure 7 This is the third structural schematic diagram of the plate-end shared vibration isolator of this utility model.

[0019] Figure 8 for Figure 7 DD sectional view.

[0020] Figure 9 This is the fourth structural schematic diagram of the plate-end shared vibration isolator of this utility model.

[0021] Figure 10 This is the fifth schematic diagram of the structure of the plate-end shared vibration isolator of this utility model.

[0022] Figure 11 for Figure 10 EE sectional view.

[0023] Figure 12 for Figure 10 The diagram shows the application of the plate-end shared vibration isolator of this utility model.

[0024] Figure 13 This is the sixth schematic diagram of the structure of the plate-end shared vibration isolator of this utility model.

[0025] Figure 14 This is the seventh structural schematic diagram of the plate-end shared vibration isolator of this utility model.

[0026] Figure 15 This is the eighth schematic diagram of the structure of the plate-end shared vibration isolator of this utility model.

[0027] Figure 16 for Figure 15 The diagram shows the application of the plate-end shared vibration isolator of this utility model.

[0028] Figure 17 This is the ninth structural schematic diagram of the plate-end shared vibration isolator of this utility model. Detailed Implementation

[0029] Example 1

[0030] like Figure 1 and Figure 2The utility model discloses a plate end shared type vibration isolator as shown in the middle, including upper casing 1, elastic element 3 and lower casing 2, the elastic element 3 specifically is spiral steel spring, and the horizontal positioning structure is set to the adjacent precast slab that upper casing 1 corresponds its support cooperation respectively, the horizontal positioning structure includes the threaded connection hole 4 that is directly arranged on the upper casing, the mounting fixed through hole 5 is set up on the lower casing 2, in addition, still including damping element 6, the damping element 6 is set up between upper casing 1 and lower casing 2, and is arranged in parallel with elastic element 3, and damping element 6 specifically is viscous damper.

[0031] When applying, such as Figure 3 And Figure 4 The precast type floating slab bed as shown in the middle, including precast slab, plate steel spring vibration isolation device 13 and the utility model plate end shared type vibration isolator 10, for the convenience of showing the cooperation relation of adjacent precast slab, Figure 3 Three precast slabs are shown in the middle, specifically first precast slab 7, second precast slab 8 and third precast slab 9, and the utility model plate end shared type vibration isolator 10 is arranged between the adjacent first precast slab 7 and second precast slab 8 and between the adjacent second precast slab 8 and third precast slab 9 respectively, the precast slab is elastically supported by plate steel spring vibration isolation device 13 and the utility model plate end shared type vibration isolator 10, the plate steel spring vibration isolation device 13 specifically is built-in steel spring vibration isolation device, and the lower casing 2 of the utility model plate end shared type vibration isolator 10 is fixedly connected with the foundation 15 through the fastener 12, the fastener 12 specifically is anchor bolt, and the horizontal positioning structure is set to the adjacent precast slab that upper casing 1 corresponds its support cooperation respectively, the horizontal positioning structure specifically is the threaded connection hole set up on the upper casing 1, and the assembly clearance hole and threaded connecting rod 11 are set up on the precast slab corresponding the horizontal positioning structure, the threaded connecting rod 11 is fixedly connected with the upper casing 1 of the utility model plate end shared type vibration isolator 10 by being matched with the assembly clearance hole and the threaded connection hole, and the track structure 14 (simplified in the drawing, and the structure such as fastener and rail support is not shown specifically) is assembled on the top surface of precast slab.When the rail vehicle is operated, the shear force generated by the vehicle can be smoothly transmitted between the precast slabs through the upper casing of the utility model plate end shared type vibration isolator, the vibration generated between the wheel and rail is buffered through the elastic element of the utility model plate end shared type vibration isolator 10 and plate steel spring vibration isolation device 13, and is absorbed and consumed by the damping element, so that the vibration energy is greatly attenuated, the adverse effects on the surrounding structure and environment are greatly weakened, and the wheel and rail vibration is well controlled.

[0032] The utility model discloses a plate end shared type vibration isolator, through setting up horizontal positioning structure on the upper casing, utilize horizontal positioning structure and threaded connecting link cooperation directly the utility model discloses plate end shared type vibration isolator with prefabricated plate fixed connection, on the one hand, compared with setting up plate end horizontal limiting device and setting up side elevation cooperation limiting on prefabricated short plate on plate end shared type vibration isolator in traditional technology, utilize threaded connecting link and horizontal positioning structure cooperation realizes the horizontal interlimiting between prefabricated plate and plate end shared type vibration isolator, structure is simpler, need not set up side elevation cooperation, also need not consider the compensation of cooperation gap, and the limiting operation is more convenient and fast, and the reliability is better, on the other hand, after the upper casing of the utility model discloses plate end shared type vibration isolator and adjacent prefabricated plate fixed connection, the upper casing can play good shear transfer effect between adjacent prefabricated plate, compared with traditional upper -placed type or side -placed type shear hinge, because the position of the upper casing is relatively lower than the prefabricated plate, when the rail vehicle passes, the stress condition of prefabricated plate body is more reasonable in the process of shear transfer, and the bending moment that the upper casing bears is very small, can effectively prevent shear transfer element or prefabricated plate from damaging, is favorable to improve system service life, reduces maintenance investment. Of course, the utility model discloses plate end shared type vibration isolator also does not exclude the combination use with shear plate, only needs to set shear plate on the upper casing top surface and set between adjacent two prefabricated plates, then utilizes threaded connecting link and horizontal positioning structure cooperation and fixes together three things.

[0033] In conclusion, the utility model discloses plate end shared type vibration isolator, has the functions of elastic vibration isolation, elastic limiting and shear transfer, simple structure, convenient assembly, horizontal limiting is easier to realize, compared with using traditional shear hinge, effectively improves and optimizes the stress of prefabricated plate body, greatly reduces the risk of shear transfer element or prefabricated plate from damaging, has the advantages such as compact structure, long service life, can be widely applied in the prefabricated floating bed engineering of subway, elevated light rail and other rail transit lines.

[0034] It needs to be explained that in the plate end shared type vibration isolator of the utility model, the types of elastic elements that can be applied are various, in addition to the spiral steel spring mentioned above, it can also be other types of springs such as rubber spring, polyurethane elastic pad or rubber metal composite spring, of course, since many rubber materials and polyurethane materials not only have good elasticity but also have good damping performance, at this time, the rubber spring, polyurethane elastic pad or rubber metal composite spring can be used as elastic element and damping element at the same time; in addition, the damping element can be other specific forms of damping device such as small hole throttling damper, eddy current damper or elastic shear damper in addition to the viscous damper mentioned above, which can also achieve good technical effects, and these are simple changes based on the technical principles of the utility model, which are within the protection scope required by the utility model.

[0035] Example two

[0036] As Figure 5 And Figure 6 The utility model plate end sharing type vibration isolator as shown in the figure, the difference with example one lies in, the lower casing 2 is fixedly provided with damping cylinder 16, the damping element is the damping material 17 provided in the damping cylinder 16, and the damping material 17 is specifically viscous damping liquid, and the lower part of the spiral steel spring as the elastic element 3 is arranged in the damping material 17; In addition, the upper casing 1 lower surface with shear force transmission function is fixedly provided with reinforcing rib plate 18 along the length direction of the rail, and the length direction of the rail in the utility model is the extension direction of the track structure 14.

[0037] Compared with example one, the technical scheme of the plate end sharing type vibration isolator in the example is not required to occupy the arrangement space of the elastic element due to the damping cylinder and the viscous damping liquid, the space utilization is more reasonable, and the arrangement of the elastic element is optimized.

[0038] In addition, the shear strength of the upper casing is significantly improved due to the reinforcing rib plate added to the lower surface of the upper casing, the shear force transmission capacity is greatly strengthened, the relatively thin upper casing can realize relatively large shear force transmission, and the material is saved and the cost is reduced.

[0039] Example three

[0040] As Figure 7 And Figure 8 The utility model plate end sharing type vibration isolator as shown in the figure, the difference with example two lies in that the horizontal positioning structure includes four threaded connection holes 4, and the plate end sharing type vibration isolator further includes height adjusting pad 19, the height adjusting pad 19 is arranged on the top surface of the upper casing 1, and the height adjusting pad 19 is provided with a through hole 20 corresponding to the threaded connection hole; In addition, the damping material 17 adopts gel-like viscous solid damping; additionally, four elastic elements 3 are additionally provided.

[0041] Compared with example two, the technical scheme in the example is more convenient to adjust and level the precast slab due to the height adjusting pad; in addition, the damping material adopts gel-like viscous solid damping, the utility model plate end sharing type vibration isolator is no longer afraid of immersion, the applicability is better, and the performance is more stable; additionally, the number of elastic elements is increased, and the carrying capacity is improved.

[0042] It should be pointed out that Figure 7In the technical solution shown in the example, for the convenience of separately adjusting the height and levelness of adjacent precast slabs, an independent height adjustment pad is arranged on the upper shell corresponding to each precast slab, but when the height difference between adjacent precast slabs is small, an integrated height adjustment pad can also be arranged, that is, the height and levelness of two adjacent precast slabs are adjusted simultaneously by using the same height adjustment pad. The biggest advantage of this way is that the height adjustment pad can be used as a shear bearing element and a transmission element at the same time. This is only described in words and will not be described one by one in the drawings, and all are within the protection scope required by the utility model.

[0043] Embodiment Four

[0044] As Figure 9 The plate end shared vibration isolator of the utility model is different from that of embodiment three in that the horizontal positioning structure is a threaded connection hole arranged in the two auxiliary connecting pieces 21 fixed on the upper shell, and the auxiliary connecting piece 21 is specifically a nut. In addition, the elastic element 3 is a rubber spring, and the rubber spring is provided with a clearance passage 22 corresponding to the auxiliary connecting piece 21.

[0045] In the technical solution described in the example, the rubber spring is used as the elastic element, and the rubber material itself has good damping performance, so the rubber spring can be used as a damping element at the same time, and the system structure is more simple and compact. In addition, the horizontal positioning structure uses the threaded connection hole arranged on the auxiliary connecting piece, and the thickness requirement of the upper shell can be further reduced, which is conducive to better optimization of the product structure.

[0046] It should be pointed out that the nut is taken as an example of the auxiliary connecting piece in the example, and in actual application, the auxiliary connecting piece can be various, for example, it can also be a steel plate provided with a threaded connection hole or a steel pipe provided with a threaded connection hole and other specific structural forms, which can also achieve good technical effects. In addition, the elastic element can also use polyurethane elastic pad or rubber metal composite spring, and these elastic elements all have good elasticity and damping performance and can also achieve good technical effects. These technical solutions are simple changes based on the technical principles of the utility model, and are only described in words and will not be described one by one in the drawings, and all are within the protection scope required by the utility model.

[0047] Embodiment Five

[0048] As Figure 10 and Figure 11The utility model discloses a plate end shared type vibration isolator, which is different from the embodiment one in that the elastic element 3 is a disc spring, four groups of disc springs are arranged, and each group specifically includes six disc springs connected in series; in order to conveniently center and position the elastic element 3, a centering piston piece 23 is welded and fixed on the upper shell 1, and a centering limiting piece 24 is also welded and fixed on the lower shell 2, and the lower part of the centering piston piece 23 is inserted into a cavity in the middle part of the centering limiting piece 24; in addition, the centering piston piece 23 in this embodiment is also an auxiliary connecting piece, a threaded connection hole 4 is arranged in the middle part of the centering piston piece 23 as a horizontal positioning structure, and a through hole corresponding to the threaded connection hole 4 is arranged on the upper shell 1.

[0049] When the utility model is applied, as shown in Figure 12 the technical scheme is different from Figure 4 that the utility model plate end shared type vibration isolator is elastically assembled between the first prefabricated plate 7 and the foundation 15, height adjustment and leveling are completed, the threaded connecting rod 11 is used to pass through the assembly gap and cooperate with the threaded connection hole 4 in the centering piston piece 23 (that is, the auxiliary connecting piece) to fix and connect the first prefabricated plate 7 and the utility model plate end shared type vibration isolator. In this embodiment, the utility model plate end shared type vibration isolator is placed in the pre-set limiting groove in the foundation 15, so that the horizontal positioning structure and the limiting groove are used to realize horizontal limiting of the plate end shared type vibration isolator and the first prefabricated plate 7.

[0050] Based on the technical principle of this embodiment, in addition to the disc spring, the elastic element can also use a leaf spring; in addition, the specific number and grouping form of the disc spring or the leaf spring can be designed according to engineering needs, and the leaf spring and the disc spring are at least two pieces. These are simple changes based on the technical principle of the utility model, and all fall within the protection scope required by the utility model.

[0051] Embodiment six

[0052] As shown in Figure 13 the utility model plate end shared type vibration isolator, which is different from the embodiment four in that the horizontal positioning structure is a threaded connection hole 4 arranged on the upper shell 1; in addition, the centering limiting piece 24 fixedly arranged on the lower shell 2 surrounds the outside of the disc spring group, and the centering piston piece 23 is pressed on the top surface of the disc spring group; the damping element 6 is a damping material layer arranged between adjacent disc springs, the damping material layer is specifically composed of rubber material, and the damping material layer and the adjacent disc spring are vulcanized and fixedly connected into an integral whole.

[0053] Compared with the embodiment four, the damping element and the elastic element are integrated in the technical solution of the embodiment, the product structure is more compact, and the arrangement optimization of the elastic element is easier to realize.

[0054] Embodiment seven

[0055] As Figure 14 shown in the utility model plate end shared vibration isolator, the difference from the embodiment five is that the elastic element 3 includes six groups of disc spring groups; in addition, the damping cylinder 16 is fixedly arranged on the lower shell 2, the damping element 6 is the liquid viscous damping material arranged in the damping cylinder 16, wherein the disc spring is partially arranged in the liquid viscous damping material.

[0056] Compared with the embodiment five, the damping element setting mode in the technical solution of the embodiment does not occupy the arrangement space of the elastic element additionally, more number of elastic elements can be arranged, which is beneficial to optimize the carrying capacity of the product, and the structure of the product is simpler, and the elements involved are fewer.

[0057] Embodiment eight

[0058] As Figure 15 shown in the utility model plate end shared vibration isolator, the difference from the embodiment five is that the elastic element 3 includes six groups of disc spring groups; in addition, the damping cylinder 16 is fixedly arranged on the lower shell 2, the damping element 6 is the liquid viscous damping material arranged in the damping cylinder 16, wherein the disc spring is partially arranged in the liquid viscous damping material. Figure 2

[0059] As Figure 16 shown, the difference from the application method of the technical solution shown in Figure 4 is that the threaded connecting rod 11 is assembled on the upper shell 1 in advance, when the first prefabricated plate 7 is placed, the threaded connecting rod 11 is passed through the assembly gap from bottom to top and then connected with the first prefabricated plate 7 into an integrated body by using the nut and threaded connecting rod on the top surface of the first prefabricated plate 7. Other application methods are basically the same, and will not be repeated here.

[0060] The technical solution of the embodiment can also achieve the beneficial technical effects similar to the embodiment one, which will not be repeated here. It should be particularly pointed out that, based on the technical principle of the embodiment, as Figure 17 shown in the utility model plate end shared vibration isolator, the difference from the embodiment five is that the elastic element 3 includes six groups of disc spring groups; in addition, the damping cylinder 16 is fixedly arranged on the lower shell 2, the damping element 6 is the liquid viscous damping material arranged in the damping cylinder 16, wherein the disc spring is partially arranged in the liquid viscous damping material. Figure 16 ​The application method recorded in the prior art is basically the same, and will not be repeated here, and is also within the protection scope required by the utility model.

[0061] The embodiments in the utility model are only for better illustrating the technical scheme of the utility model, and should not be regarded as limiting the utility model, and the technical features in many embodiments can be cross used, based on the technical principle of the utility model, the technical scheme described in the above embodiments can be recombined or some elements can be simply replaced by the similar technology, as long as based on the technical principle of the utility model, it is within the protection scope required by the utility model.

Claims

1. A board end sharing vibration isolator comprising an upper case, an elastic element, and a lower case, characterized by, The upper shell corresponding to its support matching adjacent precast slab is respectively provided with horizontal positioning structure, the horizontal positioning structure includes threaded connection hole or horizontal limiting through hole arranged directly on the upper shell, or threaded connection hole or horizontal limiting through hole arranged in the auxiliary connecting piece fixed on the upper shell.

2. The board end sharing type vibration isolator according to claim 1, wherein The plate-end shared vibration isolator further comprises a damping element.

3. The board end sharing type vibration isolator according to claim 2, wherein The damping element is arranged between the upper shell and the lower shell and is arranged in parallel with the elastic element, and the damping element comprises a viscous damper, a small-hole throttling damper, an eddy current damper or an elastic shear damper.

4. The board end sharing type vibration isolator according to claim 2, wherein The damping element is damping material arranged in the lower shell, and the elastic element is a spiral steel spring, and the spiral steel spring is partially arranged in the damping material.

5. The board end sharing type vibration isolator according to claim 2, wherein The elastic element is a disc spring or a leaf spring, at least two disc springs or leaf springs are arranged, and the damping element is a damping material layer arranged between adjacent disc springs or adjacent leaf springs, or the damping element is damping material, and the disc spring or the leaf spring is at least partially arranged in the damping material.

6. The board end sharing type vibration isolator according to claim 2, wherein The elastic element is a rubber spring, a polyurethane elastic pad or a rubber-metal composite spring, and the rubber spring, the polyurethane elastic pad or the rubber-metal composite spring simultaneously serves as the damping element.

7. The board end sharing type vibration isolator according to claim 1, wherein The lower surface of the upper shell of the plate-end shared vibration isolator is fixedly provided with a reinforcing rib plate along the length direction of the steel rail.

8. The board end sharing type vibration isolator according to claim 1, wherein The plate-end shared vibration isolator further comprises a height-adjusting pad.

9. The board end sharing type vibration isolator according to claim 8, wherein The height-adjusting pad is arranged on the top surface of the upper shell, and a clearance through hole is arranged on the height-adjusting pad corresponding to the threaded connection hole.

10. The board end sharing type vibration isolator according to claim 1, wherein The lower shell is provided with a mounting and fixing through hole.

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