High-performance stepless adjustment vibration isolation adapter and floating slab track system thereof

Abstract

The utility model relates to a high-performance stepless adjustment vibration isolation adaptor and a floating slab track system thereof, and belongs to the technical field of track traffic transportation, the high-performance stepless adjustment vibration isolation adaptor comprises an embedded part, an adaptor, a sealing cover and a plurality of locking bolts, the inner wall of the embedded part is provided with a thread A and a thread B from bottom to top; a thread C is arranged on the outer wall of the adapter and is in threaded connection with the thread A of the embedded part, and a plurality of threaded holes are formed in the top edge of the adapter; a thread D is arranged on the outer wall of the sealing cover and is connected to the thread B of the embedded part, and a plurality of inserting holes are formed in the sealing cover; and the plurality of locking bolts respectively penetrate into the plurality of inserting holes and are in threaded connection with the corresponding threaded holes. The adapter is in threaded connection with the lower end of the inner wall of the embedded part, the sealing cover is in threaded connection with the upper end of the inner wall of the embedded part, and the thread A and the thread B on the inner wall of the embedded part are opposite in spiral direction, so that the adapter can be prevented from generating relative translation in the vertical direction, the transverse direction and the longitudinal direction and generating relative rotation in the transverse direction and the longitudinal direction; and the firmness of the adapter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a high-performance stepless adjustment vibration isolation adapter and a floating plate track system thereof. Background Art

[0002] With the continuous improvement of living standards in my country and the continuous increase in track mileage, more and more people are choosing rail transit for transportation. However, while rail transit provides us with fast, comfortable, and safe travel, the vibration and noise it generates seriously affect the quality of life of surrounding residents and endanger the safety of surrounding buildings. At the same time, the stability, safety, and service life of the rail transit itself will also be affected.

[0003] Currently, floating plate vibration-damping tracks are primarily used to construct vibration-damping track systems with strong comprehensive vibration isolation performance, thereby reducing the impact of rail transit on surrounding residents, improving rail transit stability and safety, and extending the service life of rail transit. The installation and positioning of the floating plate trackbed is a crucial step in construction and installation. Traditional floating plate height adjustment solutions typically achieve this by installing gaskets between the floating plate and the isolator. However, this method cannot achieve stepless height adjustment and increases the difficulty of installation and maintenance measures. Furthermore, the relative height adjustment accuracy between the isolator and the floating plate is insufficient, which may result in uneven support reaction forces from the isolation structure on the track system, leading to reduced vibration isolation performance, track smoothness, and stability, and may even cause damage to the track structure.

[0004] In order to solve the above technical problems, manufacturers have developed a variety of vibration isolation outer sleeves, such as the Chinese utility model patent with patent number CN115821652A, entitled "A spiral adjustment adapter and its track system", and the Chinese utility model patent with patent number CN104532697A, entitled "A floating trackbed vibration isolation steel spring height adjustable outer sleeve". In the above patents, the outer sleeve is embedded in the floating plate, the adapter tube is threadedly connected to the outer sleeve, and the vibration isolator is threadedly connected to the adapter tube. The height of the adapter tube can be adjusted to accommodate steel spring floating plates of different plate thicknesses. However, the connection structure between the outer sleeve and the adapter tube is not stable, which can easily cause the adapter tube to undergo relative translation in the vertical, horizontal, and longitudinal directions, or to undergo relative rotation in the horizontal or longitudinal directions, affecting the safety of rail transit.

[0005] Therefore, how to design a high-performance stepless adjustment vibration isolation adapter and a floating plate track system having the same is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0006] The utility model provides a high-performance stepless adjustment vibration isolation adapter to solve the technical problems that the existing adapter tube connection structure has poor stability and firmness, and the adapter tube is very likely to undergo relative translation in the vertical, horizontal and longitudinal directions, and relatively rotate in the horizontal or longitudinal directions, which affects the safety of rail transit use.

[0007] The utility model solves the above technical problems with the following technical solutions: a high-performance stepless adjustment vibration isolation adapter, comprising: a pre-embedded part of a cylindrical structure, an adapter of a cylindrical structure, a sealing cover and a plurality of locking bolts.

[0008] The lower end of the inner wall of the embedded part is provided with a thread A and the upper end of the inner wall is provided with a thread B, and the spiral direction of the thread A is opposite to that of the thread B; the outer wall of the adapter is provided with a thread C matching the thread A and is threadedly connected to the thread A at the lower end of the inner wall of the embedded part, and the top edge of the adapter is provided with a plurality of threaded holes at intervals along its circumference; the outer wall of the cover is provided with a thread D matching the thread B and is threadedly connected to the thread B at the upper end of the inner wall of the embedded part, and the cover is provided with a plurality of plug-in holes respectively arranged opposite to the plurality of threaded holes; the plurality of locking bolts are respectively inserted into the plurality of plug-in holes and threadedly connected to the corresponding threaded holes.

[0009] The beneficial effects of the present invention are as follows: first, a thread A is provided at the lower end of the inner wall of the embedded part and a thread B is provided at the upper end of the inner wall thereof; then, the thread C of the outer wall of the adapter is threadedly connected to the thread A at the lower end of the inner wall of the embedded part, and the thread D of the outer wall of the cover is threadedly connected to the thread B at the upper end of the inner wall of the embedded part; since the spiral directions of the thread A and the thread B are opposite, the adapter can be prevented from relative translation in the vertical, horizontal and longitudinal directions, and relative rotation in the horizontal and longitudinal directions, thereby improving the stability, firmness and safety of the adapter.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the thread A and the thread C are both forward threads, and the thread B and the thread D are both reverse threads.

[0012] Furthermore, the thread A and the thread C are both reverse threads, and the thread B and the thread D are both forward threads.

[0013] Furthermore, the plurality of plug-in holes are all long strip structures arranged along the circumference of the cover.

[0014] A further beneficial effect of adopting the above is: designing multiple plug-in holes into a long strip structure makes it easier for the plug-in holes to be aligned with the threaded holes, thereby improving the convenience of installing the locking bolts.

[0015] In addition, a floating plate track system is provided, including a floating plate, the high-performance stepless adjustment vibration isolation adapter and a vibration isolator, the floating plate is provided with embedded holes passing through its upper and lower end surfaces; the embedded parts are embedded in the embedded holes in the same direction; the inner wall of the adapter is provided with a thread E; the vibration isolator includes an adjustment platform, a base, a buffer shock-absorbing assembly and a center rod, the outer wall of the adjustment platform is provided with a thread F and is threadedly connected to the thread E on the inner wall of the adapter, and the adjustment platform is provided with a center hole; the base is located below the adjustment platform as a supporting base, and the base cooperates with the adjustment platform sleeve and can rotate synchronously; the buffer shock-absorbing assembly is placed between the adjustment platform and the base and realizes the distance adjustment between the adjustment platform and the base; the center rod passes through the adjustment platform and the buffer shock-absorbing assembly and is detachably connected to the base, and the top of the center rod limits the maximum spacing distance between the adjustment platform and the base.

[0016] The above-mentioned further beneficial effects are: the thread on the adjustment platform can be used to achieve stepless adjustment with the adapter, and the adjustment platform and the base sleeve cooperate to have a certain amount of up and down floating to provide compression for the buffer shock-absorbing component. In addition, the sleeve structure can rotate synchronously, which plays a role in rotation limit, so that the vibration isolator rotates synchronously as a whole during adjustment, avoiding excessive wear of the internal components of the vibration isolator. The buffer shock-absorbing component, adjustment platform and base of the utility model are modularly designed, which is convenient for later maintenance and replacement of accessories. The center rod makes the vibration isolator a systematic whole, and also plays a certain role in longitudinal and lateral limiting. It can provide multi-directional stiffness support effect in conjunction with the buffer shock-absorbing component.

[0017] Furthermore, a buffer and shock-absorbing component supporting platform is provided at the bottom of the adjustment platform, and the buffer and shock-absorbing component supporting platform abuts against the top of the buffer and shock-absorbing component. A buffer and shock-absorbing component supporting platform is provided at the top of the base, and the buffer and shock-absorbing component supporting platform abuts against the bottom of the buffer and shock-absorbing component.

[0018] The further beneficial effect of adopting the above method is that the buffer shock-absorbing component bearing platform and the buffer shock-absorbing component support platform are specially designed to match the shape of the buffer shock-absorbing component, are easy to disassemble and assemble, have high stability and good adaptability.

[0019] Furthermore, an outwardly protruding square rod with a hole is provided in the middle of the bottom of the adjusting platform, and an inner square hole is provided in the middle of the base to match the square rod with a hole. The square rod with a hole is connected to the inner square hole by sliding up and down, and the center rod is located in the hole of the square rod with a hole; an outer sleeve is extended from the bottom of the adjusting platform, and the inner side wall of the outer sleeve is a square structure. The top edge of the base is provided with an outer square structure to match the outer sleeve. The top of the base is inserted into the outer sleeve, and there is a downward pressure gap between the top of the base and the bottom of the adjusting platform.

[0020] Adopt above-mentioned further beneficial effect is:

[0021] 1. The square rod with holes is plugged into the inner square hole to achieve synchronous rotation of the adjustment platform and the base, which has a rotation limit effect. In addition, the vertical sinking amplitude limit is determined by the distance between the adjustment platform and the base;

[0022] 2. The square structure of the outer sleeve on the adjustment table cooperates with the outer square structure of the outer sleeve on the base, which has both rotational limiting effect and longitudinal and transverse limiting effect, and uses the downward pressure gap to achieve vertical limiting.

[0023] Furthermore, the bottom ring of the adjustment platform is provided with a first staggered tooth structure, and the top ring of the base is provided with a second staggered tooth structure. The first staggered tooth structure and the second staggered tooth structure are adapted to be plugged in and rotate synchronously, and there is a downward pressure gap between the teeth of the first staggered tooth structure and the corresponding grooves of the second staggered tooth structure.

[0024] The above-mentioned further beneficial effect is that the first staggered tooth structure cooperates with the second staggered tooth structure to achieve rotational limitation, and the upper and lower tooth engagement gaps are used to achieve vertical limitation.

[0025] Furthermore, a first cylinder structure extends from the bottom of the adjustment platform, a limiting groove is provided on the inner side of the first cylinder structure, a second cylinder structure is provided on the top of the base, a limiting block is provided on the outer wall of the second cylinder structure, the first cylinder structure is adapted to be inserted into the outer side of the second cylinder structure, and the limiting block is adapted to be slidably connected to the limiting groove.

[0026] The further beneficial effects of the above-mentioned method are: longitudinal and transverse limiting are achieved by utilizing the plug-in cooperation of the first tube structure and the second tube structure; in addition, rotation limiting is achieved by utilizing the limiting groove and the limiting block, and vertical limiting is achieved by utilizing the depth of the limiting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic cross-sectional perspective structural diagram of the assembly of an adapter and a vibration isolator in a floating plate track system of the present invention;

[0028] Figure 2 This is a cross-sectional structural diagram of the assembly of an adapter and a hexagonal vibration isolator in a floating plate track system of the present invention;

[0029] Figure 3 This is a cross-sectional structural diagram of the assembly of an adapter and an interlocking vibration isolator in a floating plate track system of the present invention;

[0030] Figure 4 This is a cross-sectional structural diagram of the assembly of an adapter and a nested vibration isolator in a floating plate track system of the present invention;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of a sealing cover in a high-performance stepless adjustment vibration isolation adapter of the utility model;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the adapter in a high-performance stepless adjustment vibration isolation adapter of the utility model;

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the embedded parts in a high-performance stepless adjustment vibration isolation adapter of the utility model;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of a vibration isolator in a floating plate track system of the utility model;

[0035] Figure 9 This is a schematic diagram of the split structure of a vibration isolator style 1 in a floating plate track system of the present invention;

[0036] Figure 10 This is a schematic diagram of the split structure of a vibration isolator style 2 in a floating plate track system of the present invention;

[0037] Figure 11 This is a schematic diagram of the split structure of a vibration isolator style 3 in a floating plate track system of the present invention;

[0038] Figure 12 This is a schematic diagram of the split structure of a vibration isolator style 4 in a floating plate track system of the utility model.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Adjustment table, 11. Buffer and shock-absorbing component support platform, 12. Square rod with hole, 13. Outer sleeve, 14. First staggered tooth structure, 15. First tube structure, 151. Limiting groove, 16. Thread F, 2. Base, 21. Buffer and shock-absorbing component support platform, 22. Inner square hole, 23. Outer square structure, 24. Second staggered tooth structure, 25. Second tube structure, 251. Limiting block, 3. Buffer and shock-absorbing component, 4. Center rod, 5. Embedded part, 51. Thread A, 52. Thread B, 6. Adapter, 61. Thread C, 62. Threaded hole, 63. Thread E, 7. Cover, 71. Thread D, 72. Connecting hole, 8. Locking bolt, 9. Floating plate. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] Example 1,

[0043] refer to Figure 1A high-performance stepless adjustment vibration isolation adapter comprises: an embedded part 5 of a cylindrical structure, an adapter part 6 of a cylindrical structure, a cover 7 and a plurality of locking bolts 8. A thread A51 is provided at the lower end of the inner wall of the embedded part 5 and a thread B52 is provided at the upper end of its inner wall. The thread A51 is a forward thread and the thread B52 is a reverse thread. The outer wall of the adapter 6 is provided with a thread C61 matching the thread A51 and is threadedly connected to the thread A51 at the lower end of the inner wall of the embedded part 5. A plurality of threaded holes 62 are provided at intervals along the top edge of the adapter 6 in its circumferential direction. A thread D71 matching the thread B52 is provided on the outer wall of the cover 7 and is threadedly connected to the thread B52 at the upper end of the inner wall of the embedded part 5. The cover 7 is provided with a plurality of plug holes 72 respectively arranged opposite to the plurality of threaded holes 62. The plurality of locking bolts 8 are respectively inserted into the plurality of plug holes 72 and threadedly connected to the corresponding threaded holes 62.

[0044] Example 2,

[0045] refer to Figure 2 、 Figure 8 and Figure 9 A floating plate track system includes a floating plate 9 and a high-performance stepless adjustment vibration isolation adapter. The floating plate 9 is provided with embedded holes penetrating its upper and lower end surfaces; embedded parts 5 are embedded in the embedded holes in the same direction; the inner wall of the adapter 6 is provided with a thread E63; the vibration isolator includes an adjustment platform 1, a base 2, a buffer and shock absorption component 3 and a center rod 4.

[0046] The outer wall of the adjustment platform 1 is provided with a thread F16 which is threadedly connected to the thread E63 on the inner wall of the adapter 6, which is convenient for stepless height adjustment. The adjustment platform 1 is provided with a center hole; the top of the adjustment platform has a hexagonal countersunk hole for easy adjustment using tools;

[0047] The base 2 is located below the adjustment platform 1 as a supporting base. The base 2 and the adjustment platform 1 are plug-in compatible and can rotate synchronously. The specific plug-in method is as follows: Figure 9 As shown, a convex square rod 12 with a hole is provided in the middle of the bottom of the adjustment platform 1. The square rod can be a hexagonal rod. An inner square hole 22 (inner hexagonal hole) is provided in the middle of the base 2 to match the square rod with a hole. The square rod 12 with a hole is slidably connected to the inner square hole 22 up and down to meet the up and down floating effect of the adjustment platform. The center rod 4 is located in the hole of the square rod 12 with a hole. The center rod tightly connects the adjustment platform 1, the buffer shock absorption assembly 3, and the base 2 to form an integral structure.

[0048] The buffer and shock-absorbing assembly 3 is placed between the adjustment platform 1 and the base 2 to adjust the distance between the adjustment platform 1 and the base 2, thereby achieving the floating effect of the floating body. In this embodiment, the buffer and shock-absorbing assembly 3 is a V-shaped rubber-steel plate laminate, and the number of laminated layers needs to be determined according to system requirements. The center rod 4 passes through the adjustment platform 1 and the buffer and shock-absorbing assembly 3 and is detachably connected to the base 2. Specifically, the base 2 has a groove for clamping the bottom bump of the center rod.

[0049] The top of the center rod 4 limits the maximum spacing distance between the adjustment platform 1 and the base 2. Specifically, a locking nut is provided at the top of the center rod, and the locking nut is used to limit the initial installation position of the adjustment platform 1 and the base 2. In this embodiment, a conical buffer and shock-absorbing component bearing platform 11 is provided at the bottom of the adjustment platform 1, and the buffer and shock-absorbing component bearing platform 11 abuts against the top of the buffer and shock-absorbing component 3. A conical buffer and shock-absorbing component support platform 21 is provided at the top of the base 2, and the buffer and shock-absorbing component support platform 21 abuts against the bottom of the buffer and shock-absorbing component 3. The V-shaped rubber-steel plate composite part plays a role in longitudinal and lateral limitation, thereby achieving the effect of multi-directional stiffness support of the vibration isolator.

[0050] Example 3,

[0051] refer to Figure 10 The vibration isolator of Example 4 is improved on the basis of Example 3, and a rotation limit mode is added. Specifically, an outer sleeve 13 is extended from the bottom of the adjustment platform 1. The inner wall of the outer sleeve 13 is a hexagonal structure. The top edge of the base 2 is provided with an outer square structure 23 that matches the outer sleeve. The top of the base 2 is inserted into the outer sleeve 13. There is a downward pressure gap between the top of the base 2 and the bottom of the adjustment platform 1 to facilitate the compression of the buffer shock absorbing assembly. This embodiment has both longitudinal and transverse limits and vertical limits, and also has the effect of rotation limit. It is more convenient to adjust the vibration isolator, effectively reduces the wear of the internal components of the vibration isolator, and ensures its adjustment accuracy.

[0052] Example 4,

[0053] Reference Attachment Figure 11 、 Figure 3 The vibration isolator of Example 5 has a different socket structure from that of Example 3. There is no square rod structure with a hole for limiting the position. Instead, a staggered tooth structure is used. The bottom edge of the adjustment platform 1 is ringed with a first staggered tooth structure 14, and the top edge of the base 2 is ringed with a second staggered tooth structure 24. The first staggered tooth structure 14 and the second staggered tooth structure 24 are adapted to be plugged in and rotate synchronously. There is a downward pressure gap between the teeth of the first staggered tooth structure 14 and the corresponding grooves of the second staggered tooth structure 24. Combined with the V-shaped rubber-steel plate composite part, the vibration isolator has the effects of rotational limitation, longitudinal and transverse limitation, and vertical limitation at the same time.

[0054] Example 5,

[0055] Reference Attachment Figure 4 、 12The vibration isolator of Example 5 has a different sleeve structure from that of Example 3, and does not have a square rod structure with a hole for limiting. Instead, a limiting groove-limiting block cooperation method is used. A first tube structure 15 extends from the bottom of the adjustment platform 1, and a limiting groove 151 is provided on the inner side of the first tube structure 15. A second tube structure 25 is provided on the top of the base 2, and a limiting block 251 is provided on the outer wall of the second tube structure 25. The first tube structure and the second tube structure are both cylindrical structures. The first tube structure 15 is adapted to be plugged into the outer side of the second tube structure 25, and the limiting block 251 is adapted to be slidably connected with the limiting groove 151, which has both a rotational limiting effect and a vertical limiting effect (determined by the depth of the limiting groove). In addition, the cooperation of the inner and outer tube structures itself has the effect of longitudinal and transverse limiting, and combined with the V-shaped rubber-steel plate composite part, the vibration isolator is more stable when used, and the anti-sway effect is significant, thereby ensuring the high smoothness of the track system.

[0056] In addition, the shock absorbing components have a V-shaped rubber-steel plate composite part and a folding structure (see attached Figure 7 ) and flat structure (refer to Attachment Figure 8 ); Of course, buffer and shock-absorbing components of different configurations need to be equipped with buffer and shock-absorbing component bearing platforms 11 and buffer and shock-absorbing component support platforms 21 (conical platforms, flat platforms) of corresponding shapes (conical platforms, folding platforms).

[0057] In some specific embodiments, the shock absorbing assembly uses a composite rubber spring.

[0058] The specific parameters of the vibration isolator are designed as follows:

[0059] Step 1: Based on the wheel-rail load characteristics of the train running state, determine the threshold frequency for decoupling the quasi-static and dynamic loads of the isolator load spectrum, and determine the lower frequency limit of the dynamic excitation load energy of the isolator according to the energy distribution frequency band of the dynamic component;

[0060] Furthermore, the method for determining the lower limit of the frequency of the dynamic excitation load energy of the vibration isolator includes the following steps:

[0061] Step 1.1: Calculate the lower frequency limit of the dynamic excitation load energy of the vibration isolator, denoted as f, according to the following formula:

[0062]

[0063] Where v represents the train speed and L represents the distance between vehicle bogies.

[0064] Step 2: Calculate the equivalent initial static load mass of a single isolator based on the arrangement of the floating plate-isolator array;

[0065] Furthermore, the equivalent initial static load mass of a single vibration isolator includes the following steps:

[0066] Step 2.1: Determine the mass of a single floating plate according to its configuration, denoted as m s ;

[0067] Step 2.2: Determine the mass of a single rail that matches the longitudinal length of a single floating slab using the following calculation formula, expressed as m: r :

[0068] m r =ρSL (0.2)

[0069] Where ρ represents the mass density of the rail, S represents the longitudinal cross-sectional area of ​​the rail, and L represents the longitudinal length of a single floating slab.

[0070] Step 2.3: Determine the total mass of the fasteners assembled on a single floating plate using the following formula, denoted as m f :

[0071]

[0072] Among them, n f Indicates the number of fasteners assembled on a single floating slab. Indicates the mass of a single fastener.

[0073] Step 2.4: Based on the mass of a single floating slab, the mass of a single rail matching the longitudinal length of the single floating slab, and the total mass of the fasteners assembled on the single floating slab, calculate the total static load mass of the single floating slab using the following formula, expressed as m:

[0074] m=m s +2m r +m f (0.4)

[0075] Step 2.5: Calculate the equivalent initial static load mass of a single isolator according to the following formula, denoted as m0:

[0076]

[0077] Where n represents the number of vibration isolators installed under a single floating slab.

[0078] Step 3: Analytically design the nonlinear restoring force curve using a constant-frequency restoring force curve design method with a gradually stiffening stiffness characteristic.

[0079] Furthermore, the calculation of the analytical nonlinear restoring force curve includes the following steps:

[0080] Step 3.1: Based on the lower limit of the energy frequency of the dynamic excitation load of the vibration isolator, calculate the natural frequency of the fixed-frequency vibration isolator according to the following formula, denoted as ω0:

[0081]

[0082] Among them, π≈3.14159 represents the ratio of circumference to circle.

[0083] Step 3.2: Determine the restoring force analytical function of the fixed-frequency vibration isolator according to the following formula:

[0084]

[0085] Among them, e≈2.71828 is a natural constant, and x represents the vertical displacement of the isolator adjustment platform.

[0086] Step 4: Based on the nonlinear restoring force curve with gradual hardening characteristics, a nonlinear damping coefficient curve with optimal matching performance is designed.

[0087] For the nonlinear damping design of the stiffness characteristics of the nonlinear progressive stiffness isolator, for the floating plate isolator, its damping ratio should be limited to a range of not less than 5% and not more than 25%. Therefore, the design rules for the variation of the damping coefficient of the nonlinear progressive stiffness system are as follows:

[0088] 1) When the equivalent stiffness of the nonlinear progressive stiffness system reaches a maximum value, the damping ratio of the system is selected to be 25%; the nonlinear progressive stiffness system refers to a floating plate system equipped with a vibration isolator having progressive stiffness characteristics.

[0089] 2) When the equivalent stiffness of the nonlinear progressive stiffness system is equal to the stiffness of the existing linear system, the damping coefficient of the system is selected to be the same as the damping coefficient of the existing steel spring floating plate isolator, 16000 Ns / m;

[0090] 3) When the equivalent stiffness of the nonlinear progressive stiffness system reaches the minimum value, the damping ratio of the system is selected as 5%;

[0091] 4) The damping coefficients at other locations are determined by fitting the key points in the displacement-damping coefficient plane mentioned above using the cubic polynomial interpolation method;

[0092] 5) The conversion relationship between the damping ratio and the damping coefficient is determined according to the following formula:

[0093]

[0094] Where ζ represents the damping ratio, C represents the damping coefficient, and k represents the equivalent static stiffness of the isolator at any position within the allowable formation range.

[0095] 6) The equivalent static stiffness of the vibration isolator at any position within the allowable range is determined according to the following formula:

[0096]

[0097] The method is based on the characteristic that the rigidity gradually increases with displacement, limits the displacement peak value at the maximum load according to the force-displacement curve relationship, and ensures that the floating slab vibration damping track system has a constant natural frequency at any variable mass load position, thereby providing a new solution for the design of high-performance floating slab passive vibration isolators with displacement suppression and low-frequency vibration isolation requirements.

[0098] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-performance stepless adjustment vibration isolation adapter, characterized in that: include: An embedded part (5) of a cylindrical structure, wherein a thread A (51) is provided at the lower end of the inner wall of the embedded part (5) and a thread B (52) is provided at the upper end of the inner wall, wherein the spiral directions of the thread A (51) and the thread B (52) are opposite; A cylindrical adapter (6), wherein the outer wall of the adapter (6) is provided with a thread C (61) matching the thread A (51) and is threadedly connected to the thread A (51) at the lower end of the inner wall of the embedded part (5), and the top edge of the adapter (6) is provided with a plurality of threaded holes (62) spaced along its circumference; A cover (7), wherein the outer wall of the cover (7) is provided with a thread D (71) matching the thread B (52) and is threadedly connected to the thread B (52) at the upper end of the inner wall of the embedded part (5), and the cover (7) is provided with a plurality of plug holes (72) respectively arranged opposite to the plurality of threaded holes (62); A plurality of locking bolts (8) are respectively inserted into the plurality of inserting holes (72) and threadedly connected to the corresponding threaded holes (62).

2. A high-performance stepless adjustment vibration isolation adapter according to claim 1, characterized in that: The thread A (51) and the thread C (61) are both forward threads, and the thread B (52) and the thread D (71) are both reverse threads.

3. A high-performance stepless adjustment vibration isolation adapter according to claim 1, characterized in that: The thread A (51) and the thread C (61) are both reverse threads, and the thread B (52) and the thread D (71) are both forward threads.

4. A high-performance stepless adjustment vibration isolation adapter according to claim 1, characterized in that: The plurality of plug-in holes (72) are all long strip structures arranged along the circumference of the cover (7).

5. A floating plate track system, characterized in that: The invention comprises a floating plate (9), a high-performance stepless adjustment vibration isolation adapter and a vibration isolator as described in any one of claims 1 to 4, wherein the floating plate (9) is provided with embedded holes penetrating the upper and lower end surfaces thereof; the embedded parts (5) are embedded in the embedded holes in the same direction; the inner wall of the adapter (6) is provided with a thread E (63); the vibration isolator comprises an adjustment platform (1), a base (2), a buffer shock absorbing component (3) and a center rod (4); the outer wall of the adjustment platform (1) is provided with a thread F (16) and is threadedly connected to the thread E (63) on the inner wall of the adapter (6); the adjustment platform (1) is provided with a thread F (16) The center hole is provided. The base (2) is located below the adjustment platform (1) as a supporting base. The base (2) and the adjustment platform (1) are plug-in-matched and can rotate synchronously. The buffer shock-absorbing component (3) is placed between the adjustment platform (1) and the base (2) to adjust the distance between the adjustment platform (1) and the base (2). The center rod (4) passes through the adjustment platform (1) and the buffer shock-absorbing component (3) and is detachably connected to the base (2). The top end of the center rod (4) limits the maximum spacing distance between the adjustment platform (1) and the base (2).

6. A floating slab track system according to claim 5, characterized in that: A buffer and shock-absorbing component bearing platform (11) is provided at the bottom of the adjustment platform (1), and the buffer and shock-absorbing component bearing platform (11) abuts against the top of the buffer and shock-absorbing component (3); a buffer and shock-absorbing component support platform (21) is provided at the top of the base (2), and the buffer and shock-absorbing component support platform (21) abuts against the bottom of the buffer and shock-absorbing component (3).

7. A floating slab track system according to claim 6, characterized in that: The bottom center of the adjustment platform (1) is provided with an outwardly protruding square rod with a hole (12), and the middle of the base (2) is provided with an inner square hole (22) that matches the square rod with a hole, and the square rod with a hole (12) is connected to the inner square hole (22) by sliding up and down, and the center rod (4) is located in the hole of the square rod with a hole (12); the bottom of the adjustment platform (1) is extended with an outer sleeve (13), the inner side wall of the outer sleeve (13) is a square structure, the top edge of the base (2) is provided with an outer square structure (23) that matches the outer sleeve, the top of the base (2) is inserted into the outer sleeve (13), and there is a downward pressure gap between the top of the base (2) and the bottom of the adjustment platform (1).

8. The floating slab track system according to claim 6, characterized in that: The bottom ring of the adjustment platform (1) is provided with a first staggered tooth structure (14), and the top ring of the base (2) is provided with a second staggered tooth structure (24); the first staggered tooth structure (14) and the second staggered tooth structure (24) are adapted to be plugged in and rotate synchronously; and there is a downward pressure gap between the teeth of the first staggered tooth structure (14) and the corresponding grooves of the second staggered tooth structure (24).

9. The floating slab track system according to claim 6, characterized in that: A first cylinder structure (15) extends from the bottom of the adjustment platform (1), a limiting groove (151) is provided on the inner side of the first cylinder structure (15), a second cylinder structure (25) is provided on the top of the base (2), a limiting block (251) is provided on the outer side wall of the second cylinder structure (25), the first cylinder structure (15) is adapted to be plugged into the outer side of the second cylinder structure (25), and the limiting block (251) is adapted to be slidably connected to the limiting groove (151).

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