Overhead floating slab track vibration isolator

Abstract

The invention relates to an overhead floating slab track vibration isolator, which is characterized in that an overhead elastic vibration isolation element can rotate in the upper part of an outer sleeve to jack the outer sleeve, so that the overhead floating slab can be quickly and accurately jacked by the vibration isolator, and the uniform supporting of the vibration isolator can be realized; the outer sleeve comprises an outer sleeve upper portion and an outer sleeve lower portion, and the inner diameter of the outer sleeve lower portion is smaller than that of the outer sleeve upper portion, so that the top-mounted elastic vibration isolation element can be arranged on the top, the top-mounted elastic vibration isolation element is basically not soaked in water under shielding of the vibration isolator sleeve cover, and the service life of the vibration isolator can be prolonged. The upper-mounted elastic vibration isolation element is arranged in the upper portion of the outer sleeve and is closer to the vibration isolator sleeve cover, after the vibration isolator sleeve cover is opened, the condition of the upper-mounted elastic vibration isolation element can be observed more conveniently, the upper-mounted elastic vibration isolation element can be replaced and maintained conveniently, and then the rail safety can be better guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of rail transportation, and in particular to an upper floating plate track vibration isolator. Background Art

[0002] At present, the vibration isolators of floating slab tracks in rail transit are mainly divided into steel spring vibration isolators and rubber spring vibration isolators. The vibration isolators are supported under the floating slab and the vibration isolation capacity can reach more than 15dB. Floating slab tracks are the most commonly used vibration isolation technology with special vibration reduction levels in rail transit. However, the vibration isolators of existing floating slab tracks are located under the track slab, so there are certain problems in the lifting, maintenance and waterproofing of the vibration isolators.

[0003] In terms of lifting, the commonly used method is to lift the track plate multiple times by jacking, and then adjust the track plate by gasket. However, the lifting efficiency is low, and the adjustment accuracy mainly depends on the thickness of the gasket. Since the gasket is a standardized model, it is impossible to make it too thin. The lifting accuracy is usually 1mm, but the compression of the vibration isolator under the deadweight of the track plate is only 1-2mm. Therefore, it is difficult to fully achieve uniform support of the vibration isolator in the project, and there is a phenomenon of uneven force on the floating plate or even hanging in the air.

[0004] For example, the Chinese patent application with publication number CN115748321A discloses a high-performance rubber vibration isolator and its track system, and the Chinese patent application with publication number CN115948946A discloses a stepless adjustment nonlinear vibration isolator and a floating plate track system with the same. The vibration isolator is set directly below the inside of the sleeve by means of threads, and can be quickly adjusted by means of threads, and can achieve uniform support. However, in terms of maintenance and repair, although a cover plate is set on the top, the sleeve is the same size from top to bottom. The steel spring or rubber of the steel spring vibration isolator and the rubber vibration isolator can only be set at the bottom of the sleeve, which is deep and has poor detectability and measurability. It is impossible to directly check the support and working conditions of the vibration isolator, and it is not convenient for maintenance and repair. In terms of waterproofing, due to construction quality and other reasons, the drainage of the local floating plate section is not smooth, resulting in frequent water immersion of the vibration isolator. The steel spring or rubber is located at the bottom of the sleeve, which will corrode the vibration isolator and weaken the vibration isolation performance of the floating plate, seriously affecting the service life and vibration reduction effect of the vibration isolator. Summary of the invention

[0005] The purpose of the present invention is to overcome the inconvenience of inspection and maintenance of vibration isolators in the prior art, and the shortcomings of easy water purification, and to provide an upper floating plate track vibration isolator, which is convenient for maintenance and overhaul, and can greatly reduce the possibility of immersion in water, increase the service life of the vibration isolator, and ensure track safety.

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

[0007] An outer sleeve, the outer sleeve comprising an outer sleeve upper portion and an outer sleeve lower portion, the inner diameter of the outer sleeve lower portion being smaller than that of the outer sleeve upper portion;

[0008] A base, wherein a vertical guide column is provided on the base, and the lower portion of the outer sleeve is adapted to be arranged outside the guide column;

[0009] An upper elastic vibration isolation element, the upper elastic vibration isolation element is arranged in the upper part of the outer sleeve, a vertical guide rod section is arranged below the upper elastic vibration isolation element, the lower end of the guide rod section is supported on the upper end of the guide column, the lower part of the outer sleeve is adapted to be arranged outside the guide rod section, and the lower part of the outer sleeve can move vertically on the guide column and the guide rod section; the upper elastic vibration isolation element can rotate in the upper part of the outer sleeve to lift the outer sleeve;

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

[0011] The upper floating plate track vibration isolator described in the present invention, the guide rod section and the guide column can guide the lower part of the outer sleeve to move vertically. Under the support of the base, the guide column and the guide rod section, the upper elastic vibration isolation element can rotate in the upper part of the outer sleeve to lift the outer sleeve, thereby raising the outer sleeve. The raising of the outer sleeve can drive the upper floating plate to rise. This adjustment method adopts threaded adjustment, which can realize the rapid and high-precision lifting of the upper floating plate of the vibration isolator, and can realize uniform support of the vibration isolator, avoiding uneven force on the floating plate or even hanging in the air; even if the local floating plate section has poor drainage, because the outer sleeve includes the upper part and the lower part of the outer sleeve, the inner diameter of the lower part of the outer sleeve is smaller than the upper part of the outer sleeve, so that the upper elastic vibration isolation element can be arranged in the upper part of the outer sleeve to form an upper position, and under the cover of the vibration isolator sleeve cover, the upper elastic vibration isolation element will basically not be immersed in water, which can improve the service life of the vibration isolator. The upper elastic vibration isolation element is placed in the upper part of the outer sleeve, which is closer to the isolator sleeve cover. After opening the isolator sleeve cover, it is more convenient to observe the condition of the upper elastic vibration isolation element, and it is convenient to replace and repair the upper elastic vibration isolation element, thereby better ensuring the safety of the track.

[0012] Preferably, the upper elastic vibration isolation element comprises an elastic element, the elastic element can be elastically deformed in the vertical direction, the upper elastic vibration isolation element can be rotated in the upper part of the outer sleeve to vertically compress the elastic element, and the elastic element can rebound to 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 the height adjustment screw is the guide rod section, the middle part of the height adjustment screw is a rotating thread section, and the upper part of the height adjustment screw is provided with a mechanical rotating head;

[0015] The upper elastic vibration isolation element comprises an upper cover plate, an elastic element and a lower cover plate, wherein the elastic element is arranged between the upper cover plate and the lower cover plate;

[0016] The upper cover plate is limited downward in the upper part of the outer sleeve, the height-adjusting screw rod passes through the upper elastic vibration isolation element, and the rotating threaded section of the height-adjusting screw rod is threadedly connected to the lower cover plate.

[0017] In the above structure, the height adjustment screw rod, guide column and base never move vertically, forming a vertical support for the lower cover plate;

[0018] The mechanical rotating head is rotated by a tool to rotate the height adjusting screw. Since the guide rod section at the lower part of the height adjusting screw is supported on the guide column, the height adjusting screw will not move up and down, but the rotating threaded section of the height adjusting screw is threadedly connected to the lower cover plate of the upper elastic vibration isolation element, so that the rotation of the lower cover plate drives the upper elastic vibration isolation element to rotate. When the upper cover plate is limited downward in the upper part of the outer sleeve, the lower cover plate moves upward along the rotating threaded section, and the lower cover plate is separated from the bottom support of the upper part of the outer sleeve, squeezing the elastic element, and the elastic element is compressed; after the rotation of the height adjusting screw stops, the top of the elastic element becomes higher under the rebound action of the elastic element, and the upper cover plate moves up to push the outer sleeve to move upward as a whole.

[0019] Furthermore, an internally threaded tube is provided upwardly from the middle of the lower cover plate, and the height-adjusting screw is threadably connected to the internally threaded tube.

[0020] The vertical thread length can be longer, which is beneficial to improving the vertical bearing capacity; at the same time, the vertical deformation of the elastic element can be guided and radially limited.

[0021] Preferably, it further comprises a bearing plate, wherein the guide rod section is arranged downwardly from the middle of the bearing plate, and the bearing plate is arranged in the upper part of the outer sleeve;

[0022] The upper elastic vibration isolation element comprises an upper cover plate, an elastic element and a lower cover plate, wherein the elastic element is arranged between the upper cover plate and the lower cover plate;

[0023] The lower cover plate is arranged on the carrying plate, the upper cover plate is provided with a lifting external thread on its circumference, the upper inner wall of the outer sleeve is provided with a lifting internal thread, and the lifting external thread is threadedly connected with the lifting internal thread.

[0024] In the above structure, the bearing plate, the guide rod section, the guide column and the base never move vertically, thus forming a 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 circumference of the upper cover plate and the lifting internal thread arranged on the upper inner wall of the outer sleeve; the upper cover plate is stopped, and the top of the elastic element rises due to the upward rebound of the elastic element, pushing the upper cover plate to rise, thereby lifting the outer sleeve, thereby realizing the adjustment of the supporting height of the floating plate.

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

[0027] It is beneficial to improve the vertical supporting capacity and facilitates setting a larger vertical adjustment amount.

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

[0029] Avoid the handles from affecting the superstructure of the floating slab.

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

[0031] In a second aspect, the present invention provides an upper floating plate track structure, comprising a base, a floating plate, a rail-supporting structure, fasteners, rails and a plurality of the upper floating plate track isolators, wherein the outer sleeves of all the upper floating plate track isolators are pre-buried in the floating plate.

[0032] The present invention provides an upper floating plate track structure, which can realize fast and high-precision lifting of the vibration isolator. At the same time, the vibration isolator is upper-placed, which is convenient for maintenance and repair, and can greatly reduce the possibility of immersion in water, thereby increasing the service life of the vibration isolator and ensuring the safety of the track.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention provides an upper floating plate track vibration isolator. Under the support of a base, a guide column and a guide rod section, an upper elastic vibration isolation element can rotate in the upper part of the outer sleeve to lift the outer sleeve, thereby raising the outer sleeve. The raising of the outer sleeve can drive the upper floating plate to rise. This adjustment method adopts threaded adjustment, which can realize the rapid and high-precision lifting of the upper floating plate of the vibration isolator, and can realize uniform support of the vibration isolator, and avoid uneven force on the floating plate or even hanging in the air; even if the local floating plate section is poorly drained, because the outer sleeve includes an upper part and a lower part of the outer sleeve, and the inner diameter of the lower part of the outer sleeve is smaller than that of the upper part of the outer sleeve, the upper elastic vibration isolation element can be arranged in the upper part of the outer sleeve to form an upper position, and under the cover of the vibration isolator sleeve cover, the upper elastic vibration isolation element will basically not be immersed in water, which can increase the service life of the vibration isolator. The upper elastic vibration isolation element is placed in the upper part of the outer sleeve, which is closer to the isolator sleeve cover. After opening the isolator sleeve cover, it is more convenient to observe the condition of the upper elastic vibration isolation element, and it is convenient to replace and repair the upper elastic vibration isolation element, thereby better ensuring the safety of the track.

[0035] 2. The present invention provides an upper floating plate track structure, which can realize the rapid and high-precision lifting of the vibration isolator. At the same time, the vibration isolator is upper-mounted, which is convenient for maintenance and repair, and can greatly reduce the possibility of immersion in water, thereby increasing the service life of the vibration isolator and ensuring the safety of the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the first type of top-mounted floating plate track vibration isolator;

[0037] Figure 2 for Figure 1 A half-section schematic diagram of an upper-mounted elastic vibration isolation element of a middle-upper-mounted floating plate track vibration isolator;

[0038] Figure 3 for Figure 1 A top view schematic diagram of an upper elastic vibration isolation element of a middle-upper floating plate track vibration isolator;

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

[0040] Figure 5 for Figure 4 A half-section schematic diagram of an upper-mounted elastic vibration isolation element of a middle-upper-mounted floating plate track vibration isolator;

[0041] Figure 6 The figure is a structural schematic diagram of an upper floating plate track structure.

[0042] Markings in the figure: 1. Vibration isolator sleeve cover; 11. Handle; 12. Articulated 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 elastic vibration isolation element; 31. Upper cover plate; 311. Lifting external thread; 312. Externally threaded sleeve; 32. Elastic rubber; 33. Lower cover plate; 331. Internally threaded pipe; 34. Height adjustment screw; 341. Mechanical rotating head; 4. Support plate; 41. Guide column; 42. Load-bearing plate; 421. Guide rod section; 5. Rail; 6. Fastener; 7. Rail-bearing structure; 8. Floating plate; 9. Base. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0044] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0046] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0047] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0048] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0049] Example 1

[0050] like Figure 1 and Figure 4 As shown, an upper floating plate track vibration isolator comprises an outer sleeve 2, a base, an upper elastic vibration isolation element 3 and a vibration isolator sleeve cover 1.

[0051] The outer sleeve 2 comprises an outer sleeve upper portion 21 and an outer sleeve lower portion 22, the inner diameter of the outer sleeve lower portion 22 is smaller than the outer sleeve upper portion 21, and an annular step is formed at the connection between the outer sleeve lower portion 22 and the outer sleeve upper portion 21;

[0052] The base is provided with a vertical guide column 41; in this embodiment, the base is a support plate 4, and the support plate 4 can be located on the rail base or the embedded part of the base.

[0053] The upper elastic vibration isolation element 3 is arranged in the upper part 21 of the outer sleeve, and a vertical guide rod section 421 is arranged below the upper elastic vibration isolation element 3. In an optional embodiment, the upper elastic vibration isolation element 3 can be a rubber spring vibration isolation element, a polyurethane spring vibration isolation element, a diaphragm spring vibration isolation element, etc.

[0054] The lower end of the guide rod section 421 is supported on the upper end of the guide column 41, and the lower part 22 of the outer sleeve is adapted to be mounted outside the guide column 41. At the same time, the lower part 22 of the outer sleeve is adapted to be mounted outside the guide rod section 421, and the lower part 22 of the outer sleeve can move vertically on the guide column 41 and the guide rod section 421; the upper elastic vibration isolation element 3 can rotate in the upper part 21 of the outer sleeve to lift the outer sleeve 2; supported by the base, the guide column 41 and the guide rod section 421, the upper elastic vibration isolation element 3 can rotate in the upper part 21 of the outer sleeve to lift the outer sleeve 2, thereby raising the outer sleeve 2, and the raising of the outer sleeve 2 can drive the upper floating plate to rise, such as Figure 6 As shown, this adjustment method uses threaded adjustment to 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 force on the floating plate or even hanging in the air.

[0055] The isolator sleeve cover 1 is arranged on the top surface of the outer sleeve upper part 21, and the isolator sleeve cover 1 can be opened and closed, and can be connected in a detachable manner, such as Figure 1 As shown, the isolator sleeve cover 1 is connected to the outer sleeve 2 by bolts 13.

[0056] By using the upper floating plate track vibration isolator described in this embodiment, even if the drainage of the local floating plate section is not smooth, because the outer sleeve 2 includes an outer sleeve upper part 21 and an outer sleeve lower part 22, and the inner diameter of the outer sleeve lower part 22 is smaller than the outer sleeve upper part 21, the upper elastic vibration isolation element 3 can be arranged in the outer sleeve upper part 21 to form an upper position, and under the cover of the vibration isolator sleeve cover 1, the upper elastic vibration isolation element 3 will basically not be immersed in water, which can increase the service life of the vibration isolator. Moreover, the upper elastic vibration isolation element 3 is placed in the upper part 21 of the outer sleeve, and it is closer to the vibration isolator sleeve cover 1. After opening the vibration isolator sleeve cover 1, it is more convenient to observe the condition of the upper elastic vibration isolation element 3, and it is convenient to replace and repair the upper elastic vibration isolation element 3, so as to better ensure the safety of the track.

[0057] In an optional embodiment, a radial protrusion is provided on the outer side of the upper portion 21 of the outer sleeve, which can increase the connection with the floating plate and improve the vertical support capacity. 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 outer sleeve upper portion 21. The first radial protrusion 231 and the second radial protrusion 232 are horizontally pre-buried in the floating plate, and both can improve the vertical supporting capacity of the outer sleeve 2 to the floating plate.

[0058] In an optional embodiment, if Figure 1As shown, the isolator sleeve cover is provided with a handle 11, the handle 11 is hinged to a hinge seat 12 on the upper side of the isolator sleeve cover, and the hinge axis of the handle 11 is arranged transversely along the floating plate. When the handle is not in use, it is rotated and laid flat to reduce its height to avoid the handle affecting the upper structure of the floating plate.

[0059] Example 2

[0060] This embodiment provides an upper floating plate track vibration isolator, see Figure 1-Figure 3 , based on Example 1, an upper elastic vibration isolation element 3 is selected.

[0061] like Figure 1 As shown, the upper floating plate track vibration isolator comprises an outer sleeve 2, a support plate 4, a guide column 41, a height adjustment screw 34, an upper 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 column 41 are an integrated structure, and the guide column 41 protrudes upward from the middle of the support plate 4. The outer sleeve lower portion 22 of the outer sleeve 2 is adapted to be arranged on the outer side of the guide column 41 to form a vertical guide structure. The upper elastic vibration isolation element 3 is arranged in the outer sleeve upper portion 21 of the outer sleeve 2, and the upper elastic vibration isolation element 3 includes an upper cover plate 31, an elastic element and a lower cover plate 33, and the elastic element is arranged between the upper cover plate 31 and the lower cover plate 33; the elastic element is a spring or an elastic rubber 32, which can form a vertical deformation. When the elastic element is an elastic rubber 32, the upper cover plate 31, the elastic rubber 32 and the lower cover plate 33 can be a vulcanized integrated structure or a split structure. And an intermediate steel plate can be added to the elastic rubber 32 according to the mechanical performance requirements.

[0063] An internal threaded tube 331 is provided upwardly from the middle of the lower cover plate 33, and the height adjustment screw 34 is composed of a guide rod section 421, a rotating thread section and a mechanical rotating head 341 from bottom to top; the rotating thread section is an external thread section, and the rotating thread section is threadedly connected with the internal threaded tube 331 to form a structure similar to a screw rod; the guide rod section 421 is adapted to be inserted downwardly into the lower part 22 of the outer sleeve, supported on the top surface of the guide column 41, and the guide rod section 421 and the lower part 22 of the outer sleeve also form a vertical guide structure; the height adjustment screw 34 passes through the upper elastic vibration isolation element 3, so that the mechanical rotating head 341 is located above the upper elastic vibration isolation element 3, close to the isolator sleeve cover 1, which can facilitate the rotation operation. And the mechanical rotating head can be in the form of a straight line, triangle, quadrilateral or hexagon.

[0064] Except that, the upper cover plate 31 is limited downward in the upper part 21 of the outer sleeve. That is, the support plate 4 is arranged on the base 9, the base 9 supports the support plate 4, the support plate 4 supports the guide column 41, the guide column 41 supports the guide rod section 421 of the height adjustment screw 34, the rotating thread section of the height adjustment screw 34 supports the lower cover plate 33 and then 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 scheme, the internal threaded tube 331 may not be provided, and the rotating thread section of the height adjustment screw 34 may be directly threadedly connected to the lower cover plate 33. However, the thread length that can be set in this way is short, or the lower cover plate 33 needs to be set thicker; and an internal threaded tube 331 is provided upward from the middle of the lower cover plate 33, and the internal threaded tube cooperates with the external thread of the height adjustment screw, and the height adjustment screw 34 is threadedly connected to the internal threaded tube 331, so that the vertical thread length that can be set is longer, which is beneficial to improving the vertical bearing capacity; at the same time, the vertical deformation of the elastic element can be guided and radially limited.

[0065] In the above structure, the height adjustment screw 34, the guide column 41 and the base do not move vertically at all times, forming a vertical support for the lower cover plate 33; the mechanical rotating head 341 is rotated by a tool to rotate the height adjustment screw 34. Since the guide rod section 421 at the lower part of the height adjustment screw 34 is supported on the guide column 41, the height adjustment screw 34 will not move up and down, but the rotating thread section of the height adjustment screw 34 is threadedly connected to the lower cover plate 33 of the upper elastic vibration isolation element 3, so that the rotation of the lower cover plate 33 drives the upper elastic vibration isolation element 3 to rotate. When the upper cover plate 31 is limited downward in the upper part 21 of the outer sleeve, the lower cover plate 33 moves upward along the rotating thread section, and the lower cover plate 33 is separated 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 rotation of the height adjustment screw 34 stops, the top of the elastic element becomes higher under the rebound action of the elastic element, and the upper cover plate 31 moves upward to push the outer sleeve 2 to move upward as a whole, thereby realizing the local lifting of the floating plate and adjusting its force to be uniform.

[0066] The height of the upper portion 21 of the outer sleeve is suitably the general thickness of the floating plate, such as 150 mm, which can meet the lifting and adjustment requirements and facilitate the observation, replacement and maintenance of the upper elastic vibration isolation element 3.

[0067] When observing, replacing, or repairing the upper elastic vibration isolation element 3, the top vibration isolation sleeve cover 1 is opened.

[0068] like Figure 1As shown, the upper cover plate 31 is limited downward by the upper part 21 of the outer sleeve, and a limiting protrusion on the inner wall of the upper part 21 of the outer sleeve can be provided. This limiting protrusion can be provided locally in the circumference, or can be provided in an annular shape, and can be provided as a detachable, radially retractable or rotatable structure, so that the upward restriction on the upper elastic vibration isolation element 3 can be removed, and the upper elastic vibration isolation element 3 can be replaced easily; as shown Figure 3 As shown, the upper elastic vibration isolation element 3 has three gaps in the circumference, and the three gaps are adapted to the three limiting protrusions. The elastic vibration isolation element 3 is rotated so that the three gaps correspond to the three limiting protrusions, which can remove the upward restriction of the limiting protrusions on the upper elastic vibration isolation element 3. Figure 1 As shown, a first radial protrusion 231 and a second radial protrusion 232 are respectively arranged above and below the outer wall of the outer sleeve upper part 21. The first radial protrusion 231 and the second radial protrusion 232 are pre-buried in the floating plate along the horizontal direction, and both can improve the vertical support capacity of the outer sleeve 2 to the floating plate. The first radial protrusion 231 and the limiting protrusion are located at the same position inside and outside the inner wall of the outer sleeve upper part 21, and can form a reinforcement structure with each other. The isolator sleeve cover 1 is threadedly connected to the limiting protrusion by bolts 13, and the limiting protrusion is used to achieve multiple functions of limiting, strengthening and connecting, which can reduce the structural complexity in the outer sleeve upper part 21, and is convenient for maintenance and replacement. Among them, the first radial protrusion 231 and the second radial protrusion 232 can be arranged at intervals along the circumferential direction respectively; of course, a ring shape can also be used.

[0069] Example 3

[0070] See also Figure 4 and Figure 5 Different from Example 2, this embodiment provides an upper floating plate track isolator, including an outer sleeve 2, a support plate 4, a guide column 41, a bearing plate 42, an upper elastic isolation element 3 and an isolator sleeve cover 1.

[0071] The guide rod section 421 is provided downwardly from the middle of the carrier plate 42 , and the carrier plate 42 is disposed in the upper portion 21 of the outer sleeve; the carrier plate 42 and the guide rod section 421 may be of an integrated structure.

[0072] The upper elastic vibration isolation element 3 comprises an upper cover plate 31, an elastic element and a lower cover plate 33, wherein the elastic element is arranged between the upper cover plate 31 and the lower cover plate 33;

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

[0074] In the above structure, the bearing plate 42, the guide rod section 421, the guide column 41 and the base never move vertically, forming a 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 side of the upper cover plate 31 and the lifting internal thread 24 set on the inner wall of the upper part 21 of the outer sleeve; stop rotating the upper cover plate 31, and under the action of the upward rebound of the elastic element, the top of the elastic element rises, pushing the upper cover plate 31 to rise, and then lifting the outer sleeve 2, so as to adjust the support height of the floating plate.

[0075] In an optional embodiment, the vertical length of the lifting external thread 311 is shorter than the vertical length of the lifting internal thread 24. This is beneficial to improving the vertical support capacity and facilitating setting a larger vertical adjustment amount.

[0076] In an optional embodiment, the upper cover plate 31 is provided with an external threaded sleeve 312 downwardly, and a lifting external thread 311 is provided on the outside of the external threaded sleeve 312, which can reduce the thickness of the upper cover plate 31 and can provide radial guidance and limitation for the elastic element to avoid failure of the elastic element due to excessive radial deformation.

[0077] In Examples 2 and 3, the upper elastic vibration isolation element 3 includes an elastic element, which can be elastically deformed in the vertical direction, and the upper elastic vibration isolation element 3 can be rotated in 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 can utilize the elastic element to compress and rebound to lift the floating plate, and its lifting is safer and faster.

[0078] Example 4

[0079] This embodiment provides an upper floating plate track structure, such as Figure 6 As shown, it comprises a base 9, a floating plate 8, a rail support structure 7, a fastener 6, a rail 5 and a plurality of upper floating plate track isolators described in any one of embodiments 1-3, wherein the outer sleeve 2 of all the upper floating plate track isolators is pre-buried in the floating plate 8, and the base is arranged on the base. The rail support structure 7 is a rail support platform or a sleeper, etc.

[0080] The present invention provides an upper floating plate track structure, which can realize fast and high-precision lifting of the vibration isolator and ensure uniform force on the floating plate; at the same time, the vibration isolator is upper-placed, which is convenient for checking the status of the track vibration isolator, convenient for maintenance and repair, and can greatly reduce the possibility of immersion in water, thereby ensuring the service life and vibration reduction effect of the vibration isolator and ensuring the safety of the track.

[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 in the protection scope of the present invention.

Claims

1. An upper floating plate track vibration isolator, characterized in that: include An outer sleeve (2), the outer sleeve (2) comprising an outer sleeve upper portion (21) and an outer sleeve lower portion (22), the inner diameter of the outer sleeve lower portion (22) being smaller than that of the outer sleeve upper portion (21); A base, wherein a vertical guide column (41) is provided on the base, and the lower portion (22) of the outer sleeve is adapted to be arranged outside the guide column (41); An upper elastic vibration isolation element (3), the upper elastic vibration isolation element (3) being arranged in the upper part (21) of the outer sleeve, a vertical guide rod section (421) being arranged below the upper elastic vibration isolation element (3), the lower end of the guide rod section (421) being supported on the upper end of the guide column (41), the lower part (22) of the outer sleeve being adaptively arranged outside the guide rod section (421), the lower part (22) of the outer sleeve being able to move vertically on the guide column (41) and the guide rod section (421); the upper elastic vibration isolation element (3) being able to rotate in the upper part (21) of the outer sleeve to lift the outer sleeve (2); A vibration isolator sleeve cover (1), wherein the vibration isolator sleeve cover (1) is arranged on the top surface of the upper part (21) of the outer sleeve, and the vibration isolator sleeve cover (1) can be opened and closed.

2. The top-mounted floating plate track vibration isolator according to claim 1, characterized in that: The upper elastic vibration isolation element (3) comprises an elastic element, which can be elastically deformed in the vertical direction. The upper elastic vibration isolation element (3) can be rotated in the upper part (21) of the outer sleeve to vertically compress the elastic element, and the elastic element can rebound to lift the outer sleeve (2).

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

4. The top-mounted floating plate track vibration isolator according to claim 1, characterized in that: It also includes a vertically arranged height adjustment screw rod (34), the lower part of the height adjustment screw rod (34) is the guide rod section (421), the middle part of the height adjustment screw rod (34) is a rotating thread section, and the upper part of the height adjustment screw rod (34) is provided with a mechanical rotating head (341); The upper elastic vibration isolation element (3) comprises an upper cover plate (31), an elastic element and a lower cover plate (33), wherein the elastic element is arranged between the upper cover plate (31) and the lower cover plate (33); The upper cover plate (31) is limited downward in the upper portion (21) of the outer sleeve, the height adjustment screw rod (34) passes through the upper elastic vibration isolation element (3), and the rotating threaded section of the height adjustment screw rod (34) is threadedly connected to the lower cover plate (33).

5. The top-mounted floating plate track vibration isolator according to claim 4, characterized in that: An internal threaded tube (331) is provided upwardly in the middle of the lower cover plate (33), and the height-adjusting screw rod (34) is threadedly connected to the internal threaded tube (331).

6. The top-mounted floating plate track vibration isolator according to claim 1, characterized in that: It also includes a bearing plate (42), wherein the guide rod section (421) is provided downwardly in the middle of the bearing plate (42), and the bearing plate (42) is arranged in the upper part (21) of the outer sleeve; The upper elastic vibration isolation element (3) comprises an upper cover plate (31), an elastic element and a lower cover plate (33), wherein the elastic element is arranged between the upper cover plate (31) and the lower cover plate (33); The lower cover plate (33) is arranged on the supporting plate (42), the upper cover plate (31) is provided with a lifting external thread (311) on the circumferential side, the inner wall of the upper part (21) of the outer sleeve is provided with a lifting internal thread (24), and the lifting external thread (311) and the lifting internal thread (24) are threadedly connected.

7. The top-mounted floating plate track vibration isolator according to claim 6, characterized in that: The vertical length of the lifting external thread (311) is shorter than the vertical length of the lifting internal thread (24).

8. The top-mounted floating plate track vibration isolator according to any one of claims 1 to 7, characterized in that: The isolator sleeve cover is provided with a handle (11), the handle (11) is hinged to the upper side of the isolator sleeve cover, and the hinge axis of the handle (11) is arranged transversely along the floating plate.

9. The top-mounted floating plate track vibration isolator according to any one of claims 1 to 7, characterized in that: A radial protrusion is arranged on the outer side of the upper portion (21) of the outer sleeve.

10. An upper floating plate track structure, characterized in that: The invention comprises a base (9), a floating plate (8), a rail-supporting structure (7), fasteners (6), rails (5) and a plurality of upper-mounted floating plate track isolators as described in any one of claims 1 to 9, wherein the outer sleeves (2) of all the upper-mounted floating plate track isolators are pre-buried in the floating plate (8).

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