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

Abstract

The invention relates to a high-performance stepless adjustment vibration isolation adapter and a floating slab track system thereof, and belongs to the technical field of track traffic transportation, the high-performance stepless adjustment vibration isolation adapter comprises an embedded part, an adapter, a sealing cover and a plurality of locking bolts, and 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 due to the fact that the spiral direction of the thread A and the spiral direction of the thread B on the inner wall of the embedded part are opposite, 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 invention relates to the technical field of rail transportation, and 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 my country's living standards and the continuous increase in track mileage, more and more people choose rail transit for travel. However, while rail transit provides us with fast, comfortable and safe travel, the vibration and noise problems it generates also 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 rail transit itself will also be affected.

[0003] At present, floating plate vibration-damping tracks are mainly used to build vibration-damping track systems with strong comprehensive vibration isolation performance, so as to reduce the impact of rail transit on surrounding residents, improve the stability and safety of rail transit, and extend the service life of rail transit. Among them, the installation and positioning of the floating plate track bed is an important part of the construction and installation. The traditional floating plate height adjustment scheme is usually achieved by installing gaskets between the floating plate and the vibration isolator. However, this method cannot achieve stepless adjustment of height, and also increases the difficulty of installation, maintenance and other measures; in addition, the relative height adjustment accuracy between the vibration isolator and the floating plate is insufficient, which may cause the track system to be subjected to uneven support reaction force of the vibration isolation structure, resulting in 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, some manufacturers have developed a variety of vibration isolation outer sleeves, such as the Chinese invention patent with patent number CN115821652A, entitled "A spiral adjustment adapter and its track system", and another patent with patent number CN104532697A, entitled "A floating track bed 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 in the outer sleeve, and the vibration isolator is threadedly connected in the adapter tube. The height of the adapter tube can be adjusted to adapt to steel spring floating plates with different plate thicknesses. However, the connection structure between the above outer sleeve and the adapter tube is not stable, which can easily cause the adapter tube to have relative translation in the vertical, horizontal, and longitudinal directions, or relative rotation in the horizontal or longitudinal directions, affecting the safety of rail transit use.

[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 technical personnel in this field need to solve urgently. Summary of the invention

[0006] The present invention 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 easy to undergo relative translation in the vertical, horizontal and longitudinal directions, and relative rotation in the horizontal or longitudinal directions, which affects the safety of rail transit use.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a high-performance stepless adjustment vibration isolation adapter, comprising: an embedded part of a cylindrical structure, an adapter of a cylindrical structure, a 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: firstly, a thread A is arranged at the lower end of the inner wall of the embedded part and a thread B is arranged at the upper end of the inner wall thereof, and 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] Based on 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: the multiple plug-in holes are designed as a long strip structure, which facilitates 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, comprising a floating plate, the stepless adjustment converter and a vibration isolator, wherein the floating plate is provided with embedded holes penetrating the upper and lower end surfaces thereof; the embedded parts are embedded in the embedded holes in the same direction; the inner wall of the adapter is provided with threads E; the vibration isolator comprises an adjustment platform, a base, a buffer shock absorbing assembly and a center rod, the outer wall of the adjustment platform is provided with threads F and is threadedly connected to the threads 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 penetrates the adjustment platform and the buffer shock absorbing assembly and is detachably connected to the base, and the top end of the center rod limits the maximum spacing distance between the adjustment platform and the base.

[0016] The above further beneficial effect is: the thread on the adjusting table can be used to achieve stepless adjustment with the adapter, and the adjusting table and the base sleeve cooperate to have a certain amount of up and down floating to provide compression for the buffer shock absorbing assembly. In addition, the sleeve structure can rotate synchronously to play a role of rotation limit, so that the vibration isolator can rotate synchronously as a whole during adjustment to avoid excessive wear of the internal components of the vibration isolator. The buffer shock absorbing assembly, the adjusting table, and the base of the present invention are modularly designed, and later maintenance and replacement of accessories are convenient. The center rod makes the vibration isolator form 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 assembly.

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

[0018] The further beneficial effect of adopting the above method is that the bearing platform of the buffer and shock-absorbing component and the supporting platform of the buffer and shock-absorbing component are specially designed to match the shape of the buffer and shock-absorbing component, and 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, an inner square hole matching the square rod with a hole is provided in the middle of the base, the square rod with a hole is slidably connected in the inner square hole 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, 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 matching 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] The further beneficial effects of adopting the above are:

[0021] 1. The square rod with holes is plugged into the inner square hole to realize the 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 lateral limiting effect, and realizes vertical limiting by using the downward pressure gap.

[0023] Furthermore, a first staggered tooth structure is provided on the bottom edge of the adjustment platform, and a second staggered tooth structure is provided on the top of the base. 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] A further beneficial effect of adopting the above is that the first staggered tooth structure cooperates with the second staggered tooth structure to achieve rotational limiting, and the upper and lower tooth engagement gaps are used to achieve vertical limiting.

[0025] Furthermore, a first cylinder structure extends from the bottom of the adjustment platform, a limit 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 limit 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 limit block is adapted to be slidably connected with the limit groove.

[0026] The further beneficial effect of adopting the above is: longitudinal and lateral limiting is 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 It is a cross-sectional three-dimensional structural schematic diagram of the assembly of an adapter and a vibration isolator in a floating plate track system of the present invention;

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

[0030] Figure 4 It is a cross-sectional structural schematic 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 It is a schematic diagram of the three-dimensional structure of a cover in a high-performance stepless adjustment vibration isolation adapter of the present invention;

[0032] Figure 6 It is a three-dimensional structural schematic diagram of a transfer component in a high-performance stepless adjustment vibration isolation adapter of the present invention;

[0033] Figure 7 It is a three-dimensional structural schematic diagram of embedded parts in a high-performance stepless adjustment vibration isolation adapter of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of a vibration isolator in a floating plate track system of the present invention;

[0035] Fig. 9 It 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] Fig.10 It 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] Fig.11 It 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] Fig.12 It is a schematic diagram of the split structure of a vibration isolator pattern 4 in a floating plate track system of the present invention.

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

[0040] 1. Adjusting table, 11. Supporting platform of buffer and shock absorbing assembly, 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. Supporting platform of buffer and shock absorbing assembly, 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 assembly, 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. Plug-in 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] Embodiment 1,

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

[0044] Embodiment 2,

[0045] refer to Figure 2 , Figure 8 and Fig. 9 A floating plate track system includes a floating plate 9, a stepless adjustment converter and a vibration isolator. The floating plate 9 is provided with embedded holes penetrating the upper and lower end surfaces thereof; 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 shock absorbing 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, so as to facilitate stepless height adjustment. The adjustment platform 1 is provided with a center hole; the top of the adjustment platform is provided with a hexagonal countersunk hole, so as to facilitate 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 matched with each other and can rotate synchronously. Fig. 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) matching the square rod with a hole is provided in the middle of the base 2. The square rod 12 with a hole is slidably connected in 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 closely connects the adjustment platform 1, the buffer shock absorbing assembly 3, and the base 2 to form an integral structure.

[0048] 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, thereby achieving the floating effect of the floating body; in this embodiment, the buffer shock-absorbing component 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 shock-absorbing component 3 and is detachably connected to the base 2. Specifically, the base 2 has a groove for clamping the bottom convex block 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, there is a locking nut 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 limiting, and realizes the effect of multi-directional stiffness support of the vibration isolator.

[0050] Embodiment 3,

[0051] refer to Fig.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, and 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, which is convenient for the compression of the buffer shock absorbing assembly. This embodiment has both longitudinal and lateral limits and vertical limits, and also has the effect of rotation limit. It is more convenient to adjust the vibration isolator, effectively reducing the wear of the internal components of the vibration isolator and ensuring its adjustment accuracy.

[0052] Embodiment 4,

[0053] Reference Fig.11 , Figure 3 The vibration isolator of Example 5 is different from the plug-in structure of the vibration isolator of Example 3. There is no square rod structure with a hole for limiting the position, but a staggered tooth structure is used instead. 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 rotation limitation, longitudinal and lateral limitation, and vertical limitation at the same time.

[0054] Embodiment 5,

[0055] Reference Figure 4 , 12The vibration isolator of Example 5 is different from the plug-in structure of the vibration isolator of Example 3, and there is no square rod structure with holes for limiting. Instead, a limiting groove-limiting block cooperation method is used. A first cylinder structure 15 is extended from the bottom of the adjustment platform 1, and 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, and a limiting block 251 is provided on the outer side wall of the second cylinder structure 25. Both the first cylinder structure and the second cylinder structure are cylindrical structures. The first cylinder structure 15 is adapted to be plugged into the outer side of the second cylinder structure 25. The limiting block 251 is adapted to be slidably connected with the limiting groove 151, which has both a rotation limiting effect and a vertical limiting effect (determined by the depth of the limiting groove). In addition, the cooperation of the inner and outer cylinder structures itself has the effect of longitudinal and transverse limiting, and combined with the V-shaped rubber-steel plate composite, 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 buffer shock absorbing component has a V-shaped rubber-steel plate laminate and a folding structure (see attached Figure 7 ) and flat structure (see attached 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, folded-surface platforms).

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

[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 of the quasi-static and dynamic load decoupling of the vibration isolator load spectrum, and determine the lower frequency limit of the dynamic excitation load energy of the vibration 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 limit of the energy frequency of the dynamic excitation load of the vibration isolator according to the following formula, denoted as f:

[0062]

[0063] Wherein, v represents the train running speed and L represents the distance between vehicle bogies.

[0064] Step 2: Calculate the equivalent initial static load mass of a single isolator according to 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 according to the following calculation formula, denoted as m r :

[0068] m r =ρSL(0.2)

[0069] Wherein, 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 according to the following calculation formula, denoted as mf:

[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 a single floating slab, and the total mass of fasteners assembled on a single floating slab, calculate the total static load mass of a single floating slab based on the following calculation formula, denoted as m:

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

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

[0076]

[0077] Wherein, 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 gradual 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, the natural frequency of the fixed-frequency vibration isolator is calculated according to the following formula, denoted as ω0:

[0081]

[0082] Among them, π≈3.14159 represents pi.

[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 vibration 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 law 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 as 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, 16000Ns / 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 based on 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] Among them, 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 formation range is determined according to the following formula:

[0096]

[0097] This method is based on the characteristic that stiffness gradually changes with displacement. According to the force-displacement curve relationship, it limits the peak displacement at the maximum load, while ensuring that the floating plate vibration-damping track system has a constant natural frequency at any variable mass load position, providing a new solution for the design of high-performance floating plate passive isolators that have both displacement suppression and low-frequency vibration isolation requirements.

[0098] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-performance stepless adjustment vibration isolation adapter, characterized in that: include: An embedded component (5) of a cylindrical structure, wherein a thread A (51) is provided at the lower end of the inner wall of the embedded component (5) and a thread B (52) is provided at the upper end of the inner wall, and 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 apart 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 component (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), wherein the plurality of locking bolts (8) are respectively inserted into the plurality of insertion holes (72) and threadedly connected in 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 positive threads, and the thread B (52) and the thread D (71) are both negative 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 insertion 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 stepless adjustment converter and a vibration isolator as claimed 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 threads 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 threads F (16) and is threadedly connected to the threads E (63) on the inner wall of the adapter (6); the adjustment platform (1) is provided with a center rod (4); hole; the base (2) is located below the adjustment platform (1) as a supporting base, and 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 achieve the distance adjustment 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), and 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: An outwardly protruding square rod (12) with a hole is provided in the middle of the bottom of the adjustment platform (1); an inner square hole (22) matching the square rod with a hole is provided in the middle of the base (2); the square rod (12) with a hole is slidably connected in the inner square hole (22) up and down, and the center rod (4) is located in the hole of the square rod with a hole (12); an outer sleeve (13) extends from the bottom of the adjustment platform (1); the inner side wall of the outer sleeve (13) is a square structure; an outer square structure (23) matching the outer sleeve is provided at the top edge of the base (2); the top of the base (2) is inserted into the outer sleeve (13), and a downward pressure gap is provided between the top of the base (2) and the bottom of the adjustment platform (1).

8. A 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. A 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 with the limiting groove (151).

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