An overhung floating slab track vibration isolator

Abstract

The present application relates to a kind of upper floating slab track vibration isolators, upper elastic vibration isolation element can rotate the outer sleeve upper portion inside and lift the outer sleeve, can realize the quick high-precision lifting of vibration isolator upper floating slab, it can realize the uniform support of vibration isolator;Outer sleeve includes outer sleeve upper portion and outer sleeve lower portion, the inner diameter of outer sleeve lower portion is less than outer sleeve upper portion, so that it can be placed on the upper elastic vibration isolation element, and under the shelter of vibration isolator sleeve cover, upper elastic vibration isolation element is basically not immersed, can improve the service life of vibration isolator.And upper elastic vibration isolation element is placed in the outer sleeve upper portion, it is closer to vibration isolator sleeve cover, after opening vibration isolator sleeve cover, in turn, it can be more convenient to observe the condition of upper elastic vibration isolation element, and it is convenient to replace and repair upper elastic vibration isolation element, in turn, it can better guarantee the safety of track.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to an upper-mounted floating slab track vibration isolator. Background Technology

[0002] Currently, vibration isolators for floating slab tracks in rail transit are mainly divided into steel spring isolators and rubber spring isolators. These isolators are supported under the floating slab and can achieve vibration isolation capabilities of over 15dB. Floating slab tracks are the most commonly used vibration isolation technology with special vibration reduction levels in rail transit. However, the existing isolators for floating slab tracks are located below the track slab, which presents certain problems in terms of isolator lifting, maintenance, and waterproofing.

[0003] For jacking, the common method currently used is to lift multiple times with jacks, followed by adjustment using shims. However, the jacking efficiency is low, and the adjustment accuracy depends mainly on the shim thickness. Since the shims are standardized and cannot be made too thin, the jacking accuracy is typically 1mm. However, the compression of the vibration isolator under the track slab's own weight is only 1-2mm. Therefore, it is difficult to achieve completely uniform support for the vibration isolator in engineering projects, resulting in uneven stress on the floating slab and even instances of it being suspended in mid-air.

[0004] For example, Chinese patent application CN115748321A discloses a high-performance rubber vibration isolator and its track system, and Chinese patent application CN115948946A discloses a steplessly adjustable nonlinear vibration isolator and its floating slab track system. The vibration isolators are threaded into the lower part of the sleeve, allowing for quick adjustment and uniform support. However, in terms of maintenance, although a cover plate is provided at the top, the sleeve is the same size from top to bottom. The steel springs or rubber in both steel and rubber vibration isolators are located at the bottom of the sleeve, at a considerable depth, making inspection and measurement difficult. It is impossible to directly check the support and operation of the vibration isolators, and maintenance is inconvenient. Furthermore, regarding waterproofing, due to construction quality issues, drainage is often poor in some floating slab areas, causing the vibration isolators to be frequently submerged. Since the steel springs or rubber are located at the bottom of the sleeve, they can corrode the vibration isolators and weaken the vibration isolation performance of the floating slab, severely affecting the service life and vibration reduction effect of the vibration isolators. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing vibration isolators, such as inconvenience in inspection and maintenance and difficulty in water purification, and to provide an upper-mounted floating plate track vibration isolator that is convenient for maintenance and repair, can significantly reduce the possibility of water immersion, improve the service life of the vibration isolator, and ensure track safety.

[0006] In a first aspect, the present invention provides an upper-mounted floating slab track vibration isolator, comprising:

[0007] An outer sleeve, the outer sleeve comprising an upper part and a lower part, wherein the inner diameter of the lower part of the outer sleeve is smaller than that of the upper part of the outer sleeve;

[0008] A base, on which a vertical guide post is provided, and the lower part of the outer sleeve is adapted to be fitted outside the guide post;

[0009] An upper-mounted elastic vibration isolation element is disposed inside the upper part of the outer sleeve. A vertical guide rod section is provided below the upper-mounted elastic vibration isolation element. The lower end of the guide rod section is supported on the upper end of the guide post. The lower part of the outer sleeve is adapted to be disposed outside the guide rod section. The lower part of the outer sleeve can move vertically on the guide post and the guide rod section. The upper-mounted elastic vibration isolation element can rotate and lift the outer sleeve inside the upper part of the outer sleeve.

[0010] A vibration isolator sleeve cover is provided on the top surface of the upper part of the outer sleeve, and the vibration isolator sleeve cover can be opened and closed.

[0011] The top-mounted floating plate track vibration isolator of this invention has guide rods and guide columns that can vertically guide the lower part of the outer sleeve. Supported by the base, guide columns, and guide rods, the top-mounted elastic vibration isolating element can rotate and lift the outer sleeve within the upper part of the outer sleeve, thereby raising the outer sleeve. The rise of the outer sleeve can drive the top-mounted floating plate to rise. This adjustment method uses threaded adjustment, which can achieve rapid and high-precision lifting of the top-mounted floating plate of the vibration isolator, and can achieve uniform support of the vibration isolator, avoiding uneven local stress on the floating plate or even suspension. Even if the drainage of the floating plate section is not good, because the outer sleeve includes an upper part and a lower part, and the inner diameter of the lower part of the outer sleeve is smaller than that of the upper part, the top-mounted elastic vibration isolating element can be set in the upper part of the outer sleeve, forming a top-mounted structure. Under the cover of the vibration isolator sleeve cover, the top-mounted elastic vibration isolating element will basically not be immersed in water, which can improve the service life of the vibration isolator. Furthermore, the upper-mounted elastic vibration isolation element is placed inside the upper part of the outer sleeve, which is closer to the vibration isolator sleeve cover. After opening the vibration isolator sleeve cover, it is easier to observe the condition of the upper-mounted elastic vibration isolation element, and it is also easier to replace and maintain the upper-mounted elastic vibration isolation element, thereby better ensuring track safety.

[0012] Preferably, the top-mounted elastic vibration isolation element includes an elastic element that can elastically deform vertically, and the top-mounted elastic vibration isolation element can rotate vertically within the upper part of the outer sleeve to compress the elastic element, and the elastic element can rebound and lift the outer sleeve.

[0013] Preferably, the elastic element is a spring or elastic rubber.

[0014] Preferably, it also includes a vertically arranged height adjustment screw, the lower part of which is the guide rod section, the middle part of which is a rotating thread section, and the upper part of which is provided with a mechanical rotating head;

[0015] The upper-mounted elastic vibration isolation element includes an upper cover plate, an elastic element, and a lower cover plate, wherein the elastic element is disposed between the upper cover plate and the lower cover plate;

[0016] The upper part of the outer sleeve limits the downward movement of the upper cover plate, the height adjustment screw passes through the upper elastic vibration isolation element, and the rotating thread section of the height adjustment screw is threadedly connected to the lower cover plate.

[0017] In the above structure, the height adjustment screw, guide post, and base never move vertically, thus providing vertical support for the lower cover plate;

[0018] The mechanical rotating head is rotated by a tool, causing the height adjustment screw to rotate. Since the lower guide rod section of the height adjustment screw is supported on the guide post, the height adjustment screw will not move up or down. However, the rotating threaded section of the height adjustment screw is threadedly connected to the lower cover plate of the upper-mounted elastic vibration isolation element, which in turn causes the lower cover plate to rotate, driving the upper-mounted elastic vibration isolation element to rotate. Under the downward limitation of the upper cover plate inside the upper part of the outer sleeve, the lower cover plate moves upward along the rotating threaded section, and the lower cover plate disengages from the bottom support of the upper part of the outer sleeve, squeezing the elastic element, and the elastic element is compressed. After the height adjustment screw stops rotating, under the rebound action of the elastic element, the top of the elastic element becomes higher, and the upper cover plate moves up, pushing the entire outer sleeve upward.

[0019] Furthermore, the lower cover plate has an internally threaded tube extending upwards in the middle, and the height adjustment screw is threadedly connected to the internally threaded tube.

[0020] This allows for a longer vertical thread length, which is beneficial for improving the vertical load-bearing capacity; at the same time, it can guide and radially limit the vertical deformation of the elastic element.

[0021] Preferably, it further includes a support plate, wherein the guide rod section is provided downward in the middle of the support plate, and the support plate is located inside the upper part of the outer sleeve;

[0022] The upper-mounted elastic vibration isolation element includes an upper cover plate, an elastic element, and a lower cover plate, wherein the elastic element is disposed between the upper cover plate and the lower cover plate;

[0023] The lower cover plate is disposed on the bearing plate, the upper cover plate is provided with lifting external threads on its periphery, and the upper inner wall of the outer sleeve is provided with lifting internal threads. The lifting external threads and the lifting internal threads are threadedly connected.

[0024] In the above structure, the bearing plate, guide rod section, guide column and base do not move vertically at all, forming vertical support for the lower cover plate;

[0025] By rotating the upper cover plate, the upper cover plate moves downward to compress the vertical elastic element under the cooperation of the lifting external thread on the periphery of the upper cover plate and the lifting internal thread on the upper inner wall of the outer sleeve; when the rotation of the upper cover plate is stopped, the top of the elastic element rises under the upward rebound of the elastic element, pushing the upper cover plate up, thereby lifting the outer sleeve and realizing the adjustment of the support height of the floating plate.

[0026] Furthermore, the vertical setting length of the lifting external thread is less than the vertical setting length of the lifting internal thread.

[0027] It helps to improve vertical support capacity and makes it easier to set a larger vertical adjustment range.

[0028] Preferably, the vibration isolator sleeve cover is provided with a handle, the handle is hinged to the upper side of the vibration isolator sleeve cover, and the hinge axis of the handle is arranged laterally along the floating plate.

[0029] Avoid the handles affecting the upper structure of the floating plate.

[0030] Preferably, the outer side of the upper part of the outer sleeve is provided with a radial protrusion, which can increase the connection with the floating plate and improve the vertical support capacity.

[0031] In a second aspect, the present invention provides an upper-mounted floating slab track structure, comprising a base, a floating slab, a rail-bearing structure, fasteners, rails, and a plurality of the aforementioned upper-mounted floating slab track vibration isolators, wherein the outer sleeves of all the aforementioned upper-mounted floating slab track vibration isolators are pre-embedded within the floating slab.

[0032] This invention provides an upper-mounted floating plate track structure, which can realize rapid and high-precision lifting of vibration isolators. At the same time, the vibration isolators are positioned on the top, which facilitates maintenance and repair, and can greatly reduce the possibility of water immersion, improve the service life of vibration isolators, and ensure track safety.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] 1. This invention provides an upper-mounted floating slab track vibration isolator. Supported by a base, guide columns, and guide rod sections, the upper-mounted elastic vibration isolator element can rotate and lift the outer sleeve within the upper part of the outer sleeve, thereby raising the outer sleeve. The rising of the outer sleeve can drive the upper-mounted floating slab to rise. This adjustment method uses threaded adjustment, which can achieve rapid and high-precision lifting of the upper-mounted floating slab of the vibration isolator, and can achieve uniform support of the vibration isolator, avoiding uneven local stress on the floating slab or even suspension. Even if the drainage of the floating slab section is poor, because the outer sleeve includes an upper part and a lower part, and the inner diameter of the lower part of the outer sleeve is smaller than that of the upper part, the upper-mounted elastic vibration isolator element can be set inside the upper part of the outer sleeve, forming an upper-mounted structure. Under the cover of the vibration isolator sleeve cover, the upper-mounted elastic vibration isolator element will basically not be immersed in water, which can improve the service life of the vibration isolator. Furthermore, the upper-mounted elastic vibration isolation element is placed inside the upper part of the outer sleeve, which is closer to the vibration isolator sleeve cover. After opening the vibration isolator sleeve cover, it is easier to observe the condition of the upper-mounted elastic vibration isolation element, and it is also easier to replace and maintain the upper-mounted elastic vibration isolation element, thereby better ensuring track safety.

[0035] 2. This invention provides an upper-mounted floating plate track structure, which can realize rapid and high-precision lifting of the vibration isolator. At the same time, the vibration isolator is upper-mounted, which facilitates maintenance and repair, and can greatly reduce the possibility of water immersion, improve the service life of the vibration isolator, and ensure track safety. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the first type of top-mounted floating slab track vibration isolator.

[0037] Figure 2 for Figure 1 A half-sectional view of the upper-mounted elastic vibration isolation element of the upper-mounted floating slab track vibration isolator;

[0038] Figure 3 for Figure 1 A top view of the top-mounted elastic vibration isolation element of the top-mounted floating slab track vibration isolator;

[0039] Figure 4 This is a schematic diagram of the second type of top-mounted floating slab track vibration isolator;

[0040] Figure 5 for Figure 4 A half-sectional view of the upper-mounted elastic vibration isolation element of the upper-mounted floating slab track vibration isolator;

[0041] Figure 6 This is a schematic diagram of an upper-mounted floating plate track structure.

[0042] The markings in the diagram are: 1. Vibration isolator sleeve cover; 11. Handle; 12. Hinge seat; 13. Bolt; 2. Outer sleeve; 21. Upper part of outer sleeve; 22. Lower part of outer sleeve; 231. First radial protrusion; 232. Second radial protrusion; 24. Lifting internal thread; 3. Upper-mounted elastic vibration isolator element; 31. Upper cover plate; 311. Lifting external thread; 312. External thread sleeve; 32. Elastic rubber; 33. Lower cover plate; 331. Internal thread tube; 34. Height adjustment screw; 341. Mechanical rotating head; 4. Support plate; 41. Guide post; 42. Bearing plate; 421. Guide rod section; 5. Rail; 6. Fastener; 7. Rail bearing structure; 8. Floating plate; 9. Base. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0044] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0045] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0046] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0047] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0048] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0049] Example 1

[0050] like Figure 1 and Figure 4 As shown, an upper-mounted floating slab track vibration isolator includes an outer sleeve 2, a base, an upper-mounted elastic vibration isolating element 3, and a vibration isolator sleeve cover 1.

[0051] The outer sleeve 2 includes an upper part 21 and a lower part 22. The inner diameter of the lower part 22 is smaller than that of the upper part 21. An annular step is formed at the connection between the lower part 22 and the upper part 21.

[0052] The base is provided with vertical guide posts 41; in this embodiment, the base is a support plate 4, which can be placed on the track base or on the base embedded parts.

[0053] The upper-mounted elastic vibration isolation element 3 is disposed inside the upper part 21 of the outer sleeve, and a vertical guide rod section 421 is provided below the upper-mounted elastic vibration isolation element 3. In optional embodiments, the upper-mounted elastic vibration isolation element 3 can be a rubber spring vibration isolation element, a polyurethane spring vibration isolation element, or a diaphragm spring vibration isolation element, etc.

[0054] The lower end of the guide rod section 421 is supported by the upper end of the guide post 41. The lower part 22 of the outer sleeve is adapted to be installed outside the guide post 41, and simultaneously adapted to be installed outside the guide rod section 421. The lower part 22 of the outer sleeve can move vertically on the guide post 41 and the guide rod section 421. The upper-mounted elastic vibration isolation element 3 can rotate and lift the outer sleeve 2 within the upper part 21 of the outer sleeve. Supported by the base, guide post 41, and guide rod section 421, the upper-mounted elastic vibration isolation element 3 can rotate and lift the outer sleeve 2 within the upper part 21 of the outer sleeve, thereby raising the outer sleeve 2. The raising of the outer sleeve 2 can drive the upper-mounted floating plate to rise, such as... Figure 6 As shown, this adjustment method uses threaded adjustment, which can achieve rapid and high-precision lifting of the upper floating plate of the vibration isolator, and can achieve uniform support of the vibration isolator, avoiding uneven local stress on the floating plate or even suspension.

[0055] The vibration isolator sleeve cover 1 is located on the top surface of the upper part 21 of the outer sleeve. The vibration isolator sleeve cover 1 can be opened and closed, and can be detachably connected, such as... Figure 1 As shown, the vibration isolator sleeve cover 1 is connected to the outer sleeve 2 by bolt 13.

[0056] Using the top-mounted floating slab track vibration isolator described in this embodiment, even if drainage is poor in some floating slab sections, the outer sleeve 2, comprising an upper part 21 and a lower part 22, has a smaller inner diameter than the upper part 21. This allows the top-mounted elastic vibration isolating element 3 to be placed inside the upper part 21, forming a top-mounted structure. Furthermore, under the protection of the isolator sleeve cover 1, the top-mounted elastic vibration isolating element 3 is essentially protected from water immersion, thus improving the isolator's service life. Moreover, since the top-mounted elastic vibration isolating element 3 is located inside the upper part 21 of the outer sleeve, it is closer to the isolator sleeve cover 1. Opening the sleeve cover 1 makes it easier to observe the condition of the top-mounted elastic vibration isolating element 3 and facilitates its replacement and maintenance, thereby better ensuring track safety.

[0057] In an optional embodiment, the outer side of the upper part 21 of the outer sleeve is provided with radial protrusions, which can increase the connection with the floating plate and improve the vertical support capacity. For example... Figure 1 As shown, a first radial protrusion 231 and a second radial protrusion 232 are respectively provided above and below the outer side wall of the upper part 21 of the outer sleeve. The first radial protrusion 231 and the second radial protrusion 232 are embedded in the floating plate along the horizontal direction, which can improve the vertical support capacity of the outer sleeve 2 for the floating plate.

[0058] In optional implementations, such as Figure 1As shown, the vibration isolator sleeve cover is provided with a handle 11, which is hinged to the hinge seat 12 on the upper side of the vibration isolator sleeve cover. The hinge axis of the handle 11 is arranged laterally along the floating plate. When the handle is not in use, it can be rotated to flatten it and lower its height to avoid the handle affecting the upper structure of the floating plate.

[0059] Example 2

[0060] This embodiment provides a top-mounted floating slab track vibration isolator. See [link / reference] Figures 1-3 Based on Example 1, the top-mounted elastic vibration isolation element 3 was selected.

[0061] like Figure 1 As shown, the top-mounted floating slab track vibration isolator includes an outer sleeve 2, a support plate 4, a guide post 41, a height adjustment screw 34, a top-mounted elastic vibration isolation element 3, and a vibration isolator sleeve cover 1.

[0062] like Figure 1 and Figure 2 As shown, the support plate 4 and the guide post 41 are an integral structure, with the guide post 41 protruding upwards from the middle of the support plate 4. The lower part 22 of the outer sleeve 2 is adapted to be installed on the outside of the guide post 41, forming a vertical guiding structure. The upper-mounted elastic vibration isolation element 3 is installed inside the upper part 21 of the outer sleeve 2. The upper-mounted elastic vibration isolation element 3 includes an upper cover plate 31, an elastic element, and a lower cover plate 33. The elastic element is disposed between the upper cover plate 31 and the lower cover plate 33. The elastic element is a spring or elastic rubber 32, capable of vertical deformation. When the elastic element is elastic rubber 32, the upper cover plate 31, elastic rubber 32, and lower cover plate 33 can be a vulcanized integral structure or a separate structure. Furthermore, an intermediate steel plate can be added to the elastic rubber 32 according to mechanical performance requirements.

[0063] The lower cover plate 33 has an internally threaded tube 331 extending upwards from the center. The height adjustment screw 34 consists of a guide rod section 421, a rotating threaded section, and a mechanical rotating head 341, arranged sequentially from bottom to top. The rotating threaded section is an externally threaded section, which is threadedly connected to the internally threaded tube 331 to form a structure similar to a lead screw. The guide rod section 421 is inserted downwards into the lower part 22 of the outer sleeve and supported on the top surface of the guide post 41. The guide rod section 421 and the lower part 22 of the outer sleeve also form a vertical guiding structure. The height adjustment screw 34 passes through the upper-mounted elastic vibration isolation element 3, so that the mechanical rotating head 341 is located above the upper-mounted elastic vibration isolation element 3, close to the vibration isolator sleeve cover 1, which facilitates rotational operation. The mechanical rotating head can be in the form of a straight line, triangle, quadrilateral, or hexagon.

[0064] In addition, the upper part 21 of the outer sleeve limits the downward movement of the upper cover plate 31. That is, the support plate 4 is set on the base 9, the base 9 supports the support plate 4, the support plate 4 supports the guide post 41, the guide post 41 supports the guide rod section 421 of the height adjustment screw 34, the rotating threaded section of the height adjustment screw 34 supports the lower cover plate 33, and thus supports the elastic element and the upper cover plate 31. The upper cover plate 31 supports the outer sleeve 2, and the outer sleeve 2 supports the floating plate 8 upward. Of course, in the above solution, the internal threaded tube 331 can also be omitted, and the rotating threaded section of the height adjustment screw 34 can be directly threaded to the lower cover plate 33. However, this method allows for a shorter thread length, or requires a thicker lower cover plate 33. The lower cover plate 33 has an internally threaded tube 331 in the middle, which engages with the external thread of the height adjustment screw. The height adjustment screw 34 is threaded to the internally threaded tube 331, allowing for a longer vertically adjustable thread length, which is beneficial for improving the vertical load-bearing capacity. At the same time, it can guide and radially limit the vertical deformation of the elastic element.

[0065] In the above structure, the height adjustment screw 34, guide post 41, and base do not move vertically, forming vertical support for the lower cover plate 33. By rotating the mechanical rotating head 341 with a tool, the height adjustment screw 34 rotates. Since the guide rod section 421 at the bottom of the height adjustment screw 34 is supported on the guide post 41, the height adjustment screw 34 will not move up or down. However, the rotating threaded section of the height adjustment screw 34 is threadedly connected to the lower cover plate 33 of the upper elastic vibration isolation element 3, thereby causing the lower cover plate 33 to rotate and drive the upper elastic vibration isolation element 3 to rotate. Under the downward limit of the upper cover plate 31 in the upper part 21 of the outer sleeve, the lower cover plate 33 moves upward along the rotating threaded section. The lower cover plate 33 disengages from the bottom support of the upper part 21 of the outer sleeve, squeezing the elastic element, and the elastic element is compressed. After the height adjustment screw 34 stops rotating, under the rebound action of the elastic element, the top of the elastic element becomes higher, the upper cover plate 31 moves upward and pushes the outer sleeve 2 to move upward as a whole, realizing the local lifting of the floating plate and adjusting its force uniformity.

[0066] The height of the upper part 21 of the outer sleeve is suitable to be the general thickness of the floating plate. For example, setting it to 150mm can meet the lifting and adjustment requirements, and at the same time facilitate the observation, replacement and maintenance of the upper elastic vibration isolation element 3.

[0067] When inspecting and replacing the top-mounted elastic vibration isolation element 3, simply open the top vibration isolation sleeve cover 1.

[0068] like Figure 1As shown, the downward restriction of the upper part 21 of the outer sleeve on the upper cover plate 31 can be addressed by providing an inward limiting protrusion on the inner wall of the upper part 21 of the outer sleeve. This limiting protrusion can be partially circumferentially provided or can be annular, and can be a detachable, radially retractable, or rotatable structure, thereby removing the upward restriction on the upper-mounted elastic vibration isolation element 3 and facilitating the replacement of the upper-mounted elastic vibration isolation element 3; for example... Figure 3 As shown, the upper-mounted elastic vibration isolation element 3 has three gaps in its circumference. These three gaps are adapted to three limiting protrusions. Rotating the elastic vibration isolation element 3 so that the three gaps correspond to the three limiting protrusions removes the upward restriction imposed by the limiting protrusions on the upper-mounted elastic vibration isolation element 3. Figure 1 As shown, a first radial protrusion 231 and a second radial protrusion 232 are respectively provided above and below the outer wall of the upper part 21 of the outer sleeve. The first radial protrusion 231 and the second radial protrusion 232 are horizontally embedded in the floating plate, which can improve the vertical support capacity of the outer sleeve 2 for the floating plate. Moreover, the first radial protrusion 231 and the limiting protrusion are located at the same position on the inner and outer sides of the inner wall of the upper part 21 of the outer sleeve, which can form a reinforcing structure with each other. The vibration isolator sleeve cover 1 is threadedly connected to the limiting protrusion by bolts 13. The limiting protrusion realizes multiple functions of limiting, reinforcing and connecting, which can reduce the structural complexity inside the upper part 21 of the outer sleeve and facilitate maintenance and replacement. The first radial protrusion 231 and the second radial protrusion 232 can be arranged circumferentially; of course, they can also be arranged in a ring.

[0069] Example 3

[0070] See Figure 4 and Figure 5 Unlike Embodiment 2, this embodiment provides an upper-mounted floating plate track vibration isolator, including an outer sleeve 2, a support plate 4, a guide post 41, a bearing plate 42, an upper-mounted elastic vibration isolation element 3, and a vibration isolator sleeve cover 1.

[0071] The guide rod section 421 is provided downward in the middle of the bearing plate 42, and the bearing plate 42 is located inside the upper part 21 of the outer sleeve; the bearing plate 42 and the guide rod section 421 can be an integral structure.

[0072] The upper-mounted elastic vibration isolation element 3 includes an upper cover plate 31, an elastic element, and a lower cover plate 33, with the elastic element disposed between the upper cover plate 31 and the lower cover plate 33;

[0073] The lower cover plate 33 is disposed on the bearing plate 42, the upper cover plate 31 is provided with a lifting external thread 311 on its periphery, and the inner wall of the upper part 21 of the outer sleeve is provided with a lifting internal thread 24. The lifting external thread 311 and the lifting internal thread 24 are threadedly connected.

[0074] In the above structure, the bearing plate 42, guide rod section 421, guide post 41, and base do not move vertically, thus providing vertical support for the lower cover plate 33. By rotating the upper cover plate 31, the upper cover plate 31 moves downward to compress the vertical elastic element under the cooperation of the lifting external thread 311 on the periphery of the upper cover plate 31 and the lifting internal thread 24 provided on the inner wall of the upper part 21 of the outer sleeve. When the rotation of the upper cover plate 31 stops, the top of the elastic element rises under the upward rebound of the elastic element, pushing the upper cover plate 31 to rise, thereby lifting the outer sleeve 2 and realizing the adjustment of the support height of the floating plate.

[0075] In an optional implementation, the vertical length of the lifting external thread 311 is less than the vertical length of the lifting internal thread 24. This improves the vertical support capacity and allows for a larger vertical adjustment range.

[0076] In an optional embodiment, the upper cover plate 31 is provided with an external threaded sleeve 312 downward, and a lifting external thread 311 is provided on the outside of the external threaded sleeve 312. This can reduce the thickness of the upper cover plate 31 and can guide and limit the elastic element radially, thus preventing the elastic element from failing due to excessive radial deformation.

[0077] In both Embodiments 2 and 3, the upper-mounted elastic vibration isolation element 3 includes an elastic element capable of vertical elastic deformation. The upper-mounted elastic vibration isolation element 3 can rotate within the upper part 21 of the outer sleeve to vertically compress the elastic element, and the elastic element can rebound and lift the outer sleeve 2. This control method utilizes the compression and rebound of the elastic element to lift the floating plate, making the lifting process safer and faster.

[0078] Example 4

[0079] This embodiment provides an upper-mounted floating slab track structure, such as... Figure 6 As shown, the track includes a base 9, a floating slab 8, a rail support structure 7, fasteners 6, rails 5, and several top-mounted floating slab track isolators as described in embodiments 1-3. The outer sleeves 2 of all the top-mounted floating slab track isolators are pre-embedded within the floating slab 8, and the base is set on the base. The rail support structure 7 is a rail support platform or sleeper, etc.

[0080] This invention provides an upper-mounted floating slab track structure, which can achieve rapid and high-precision lifting of the vibration isolators, ensuring uniform stress on the floating slab; at the same time, the vibration isolators are positioned at the top, which facilitates the inspection of the track vibration isolators' condition, facilitates maintenance and repair, and can greatly reduce the possibility of water immersion, ensuring the service life and vibration reduction effect of the vibration isolators, and ensuring track safety.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A top-mounted floating slab track vibration isolator, characterized in that, Includes an outer sleeve (2), which includes an upper part (21) and a lower part (22). The height of the upper part (21) is equal to the thickness of the floating plate. The inner diameter of the lower part (22) is smaller than that of the upper part (21). The base has a vertical guide post (41) on it, and the lower part (22) of the outer sleeve is adapted to be fitted outside the guide post (41); An upper-mounted elastic vibration isolation element (3) is disposed inside the upper part (21) of the outer sleeve. A vertical guide rod section (421) is provided below the upper-mounted elastic vibration isolation element (3). The lower end of the guide rod section (421) is supported on the upper end of the guide post (41). The lower part (22) of the outer sleeve is adapted to be disposed outside the guide rod section (421). The lower part (22) of the outer sleeve can move vertically on the guide post (41) and the guide rod section (421). The upper-mounted elastic vibration isolation element (3) includes an elastic element. The elastic element can be elastically deformed vertically. The upper-mounted elastic vibration isolation element (3) can rotate vertically to compress the elastic element inside the upper part (21) of the outer sleeve. The elastic element can rebound and lift the outer sleeve (2) as a whole, so that the upper-mounted elastic vibration isolation element (3) can rotate and lift the outer sleeve (2) inside the upper part (21) of the outer sleeve. Vibration isolator sleeve cover (1), the vibration isolator sleeve cover (1) is provided on the top surface of the upper part (21) of the outer sleeve, the vibration isolator sleeve cover (1) can be opened and closed; The top-mounted floating plate track vibration isolator also includes a vertically arranged height adjustment screw (34), the lower part of which is the guide rod section (421), the middle part of which is the rotating thread section, and the upper part of which is provided with a mechanical rotating head (341); The upper-mounted elastic vibration isolation element (3) also includes an upper cover plate (31) and a lower cover plate (33), and the elastic element is disposed between the upper cover plate (31) and the lower cover plate (33); The upper part (21) of the outer sleeve limits the downward movement of the upper cover plate (31), the height adjustment screw (34) passes through the upper elastic vibration isolation element (3), and the rotating thread section of the height adjustment screw (34) is threaded to the lower cover plate (33). The height adjustment screw (34), guide post (41), and base remain stationary, providing vertical support to the lower cover plate (33). By rotating the mechanical rotating head (341) with a tool, the height adjustment screw (34) rotates. Since the guide rod section (421) at the bottom of the height adjustment screw (34) is supported on the guide post (41), the height adjustment screw (34) does not move up or down. However, the rotating threaded section of the height adjustment screw (34) is threadedly connected to the lower cover plate (33) of the upper-mounted elastic vibration isolation element (3), thereby causing the lower cover plate (33) to rotate and drive the upper... The elastic vibration isolation element (3) rotates, and under the downward limit of the upper cover plate (31) inside the upper part (21) of the outer sleeve, the lower cover plate (33) moves upward along the rotating thread section. The lower cover plate (33) disengages from the bottom support of the upper part (21) of the outer sleeve, and squeezes the elastic element, and the elastic element is compressed. After the rotating height adjustment screw (34) stops rotating, under the rebound action of the elastic element, the top of the elastic element becomes higher, and the upper cover plate (31) moves upward to push the outer sleeve (2) to move upward as a whole, so as to realize the local lifting of the floating plate (8) and adjust its force uniformity.

2. The top-mounted floating slab track vibration isolator according to claim 1, characterized in that, The elastic element is a spring or elastic rubber (32).

3. The top-mounted floating slab track vibration isolator according to claim 1, characterized in that, The lower cover plate (33) has an internally threaded tube (331) in the middle and upwards, and the height adjustment screw (34) is threadedly connected to the internally threaded tube (331).

4. A top-mounted floating slab track vibration isolator according to any one of claims 1-3, characterized in that, The vibration isolator sleeve cover is provided with a handle (11), which is hinged to the upper side of the vibration isolator sleeve cover. The hinge axis of the handle (11) is arranged laterally along the floating plate.

5. A top-mounted floating slab track vibration isolator according to any one of claims 1-3, characterized in that, The outer side of the upper part (21) of the outer sleeve is provided with a radial protrusion.

6. A top-mounted floating slab track structure, characterized in that, The system includes a base (9), a floating plate (8), a rail support structure (7), fasteners (6), rails (5), and several top-mounted floating plate track isolators as described in any one of claims 1-5, wherein the outer sleeve (2) of all the top-mounted floating plate track isolators is embedded in the floating plate (8).

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