Transverse impedance multidirectional damping steel spring device

Abstract

The utility model relates to a transverse impedance multidirectional damping steel spring device which comprises a spring outer sleeve (1), a steel spring (5) and a spring inner sleeve, the spring inner sleeve comprises a spring inner sleeve cover (2) and a spring inner sleeve base (6), and a transverse impedance elastic body (3) for transverse limiting is arranged between the spring outer sleeve (1) and the spring inner sleeve base (6). Compared with the prior art, three-direction damping amplification is adopted, besides the main vibration isolation direction, the stability and vibration in the direction perpendicular to the main vibration isolation direction of the spring can be controlled, and meanwhile the problem that the spring is subjected to transverse shearing dynamic load to cause fatigue fracture and failure of the spring is solved; therefore, the transverse stability and reliability are improved, and the service life of parts is prolonged.

Description

Technical Field

[0001] This utility model is applicable to the field of rail transit, specifically relating to a transverse impedance multi-directional damping steel spring device. Background Technology

[0002] In urban rail transit lines where vibration reduction performance is required, floating slab track bed systems are often used to isolate the track from vibration, such as steel spring floating slab track bed and rubber spring floating slab track bed.

[0003] The existing steel spring floating slab vibration reduction track bed system uses discretely distributed steel springs to support the track bed slab, which will bring a series of problems: (1) The vibration isolation effect of the steel spring floating slab track bed depends on the vibration isolation frequency. The lower the vibration isolation frequency, the better the vibration isolation effect. However, since the damping of the vibration isolation spring system is small, at the vibrating frequency and above, it not only causes the vibration of the track bed slab, track and vehicle to increase, but also the vibration of the structure being isolated is amplified at the vibration isolation frequency, which reduces the vibration isolation effect of the vibration isolation system near the vibration isolation frequency. (2) The track will deform and vibrate under the excitation of the vehicle wheel-rail force. The lateral deformation of the track, especially on curved lines, directly affects the safety of train operation. Due to the decrease in the support stiffness of the floating slab track bed, the track deformation increases. This not only causes the rails and track bed slabs to bear greater bending moments and generate greater bending stress, threatening the fatigue life of the rails and track bed slabs, but also reduces the stability and safety performance of the track system. (3) The lateral stability of the track also directly affects the wave wear of the rails and the deformation of the wheels. The low stiffness track system also changes the wheel-rail relationship, increases the rolling and creep fatigue damage of the wheel and rail, directly affects the service life of the rail vehicle parts, and increases the maintenance work of the rail vehicle. (4) The steel springs are subjected to the lateral dynamic load of the vehicle, especially on curved lines, which causes large shear strain in the springs themselves, which easily leads to dynamic fatigue fracture of the springs.

[0004] Patents CN201459536U, CN201746746U, and CN215405346U disclose methods for improving damping effect using damping pistons. However, open-type unconstrained damping fluids, lacking restrictions on fluid flow, particularly within the spring region, struggle to achieve effective damping. Furthermore, the steel springs are primarily subjected to vertical loads from the weight of the isolation body, such as the track slab's own weight and vehicle loads, while lacking lateral preload, resulting in poor lateral stability. Existing spring lateral limiting technologies, such as CN103306168B, fail to eliminate manufacturing and installation errors due to the lack of pre-deformation in the elastic limiting body. Additionally, existing technologies are complex and difficult to maintain, hindering their application in track systems. Summary of the Invention

[0005] The purpose of this utility model is to overcome the defects of the existing technology by providing a transverse impedance multi-directional damping steel spring device, so as to solve the problems of poor transverse stability of the floating slab track bed system, amplification of vibration of the isolated structure caused by resonance of the vibration isolation frequency of the low-damped floating slab track bed system, and increased vibration of the track and vehicle, reduce the dynamic deformation of the rail and floating slab, and solve the problems of poor dynamic stability of the existing floating slab track bed system, large vibration noise of the track bed slab and rail, and amplification of vibration of the vibration isolation structure at the vibration isolation frequency.

[0006] The purpose of this utility model can be achieved through the following technical solution: a transverse impedance multi-directional damping steel spring device, including a spring outer sleeve, a steel spring, and a spring inner sleeve, wherein the spring inner sleeve includes a spring inner sleeve cover and a spring inner sleeve base, and a transversely limiting transverse impedance elastic body is provided between the spring outer sleeve and the spring inner sleeve base.

[0007] Furthermore, the inner side of the spring outer sleeve is provided with a transverse impedance elastomer bottom plate, and the outer side of the spring inner sleeve base is provided with a transverse impedance elastomer top plate.

[0008] The lateral impedance elastomer base plate, the inner surface of the spring outer sleeve, the upper plate of the lateral impedance elastomer, and the outer surface of the spring inner sleeve form a cavity for accommodating the lateral impedance elastomer, and the lateral impedance elastomer and each contact surface of the cavity are in local pre-compression contact.

[0009] Furthermore, the material of the transverse impedance elastomer is elastic rubber or polymer elastic material, and its cross-section is a ring-shaped variable cross-section elastic ring with a corrugated or pinned cross-section.

[0010] Furthermore, the elastic preload of the lateral impedance elastomer ranges from 0 to 50 mm. The elastic preload of the lateral impedance elastomer is determined by the design position of the upper plate of the lateral impedance elastomer on the inner sleeve base, based on the position of the lateral impedance elastomer base plate on the spring outer sleeve and the height of the height adjustment block.

[0011] Furthermore, the inner sleeve of the spring is also provided with a spring damping baffle and a damping body; the spring damping baffle is rigidly connected to the base of the inner sleeve of the spring, and the damping body is placed inside the base of the inner sleeve of the spring.

[0012] The inner sleeve cover of the spring also has a rigidly connected damping amplification flange. Furthermore, the damping amplification flange includes a connecting rod, vertical resistance plates, and horizontal resistance plates. Multiple vertical resistance plates are arranged vertically on the connecting rod, and multiple horizontal resistance plates are located at the ends of each vertical resistance plate.

[0013] Furthermore, the connecting rod is rigidly connected to the bottom of the inner sleeve cover by the top of the connecting rod, and the bottom surface of the connecting rod extends to the inner bottom surface of the inner sleeve base. The inner bottom surface of the inner sleeve base is provided with an upwardly protruding vertical limiting surface of the inner sleeve. After the bottom surface of the connecting rod and the vertical limiting surface of the inner sleeve are assembled, a limiting gap is left, and the limiting gap ranges from 3 to 10 mm.

[0014] The vertical resistance plate and the horizontal resistance plate are cylindrical with notches on the edges. Multiple notches divide the perimeter of the plate into working surfaces in multiple directions. There are flange gaps between each working surface to allow the flow of the damping body. The flange gaps range from 0 to 100 mm.

[0015] Furthermore, the spring inner sleeve base is fixed to the spring support platform as a whole by the spring transverse positioning pin through the positioning pin fixing layer;

[0016] A spring inner sleeve base coupling pad is provided between the spring inner sleeve base and the spring support platform. The spring lateral positioning pin passes through the spring inner sleeve base coupling pad and the spring inner sleeve lateral limiting surface of the spring inner sleeve base for positioning. The material of the positioning pin fixing layer is fast-curing insulating resin or bonding high-strength material.

[0017] Furthermore, the spring damping baffle is inclined and fixed inside the inner sleeve base of the spring, and its inclination angle is consistent with the rise angle of the steel spring, and a working gap is left for spring compression or tension, so that they do not interfere with each other. The working gap range is 5-50mm.

[0018] Furthermore, the spring outer sleeve and the track slab are cast together;

[0019] The outer sleeve of the spring is connected to the inner sleeve cover of the spring via a height adjustment block.

[0020] Furthermore, the inner sleeve cover, the transverse impedance elastomer, and the upper plate of the transverse impedance elastomer of the inner sleeve base are respectively provided with an assembly notch for the inner sleeve cover, an elastomer notch, and an upper plate notch for the elastomer. The cross-section of the notch for the inner sleeve cover, the elastomer notch, and the upper plate notch for the elastomer is larger than the bearing boss of the outer sleeve of the spring. The notch shape of the notch for the inner sleeve cover, the elastomer notch, and the upper plate notch for the elastomer is a consistent triangular groove or curved groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention improves the damping of steel springs. Currently, the so-called "damping springs" on the market only contain damping fluid in the inner sleeve. Originally, designers hoped that the compression motion of the steel spring and the friction of the damping fluid would dissipate energy, but this is ineffective (as proven by numerous tests). This is because after a train passes over the track bed, the upper part of the steel spring deforms by about 2-3 mm, while the lower part is undamped. Since the damping fluid is in the lower part, the energy dissipated by the spring's own movement is almost negligible. Other measures, such as "pistons," are needed, but these only consider the vertical direction and not the lateral direction. Furthermore, the damping fluid is in a free state, and because the damping effect of the track system is different from other zero-damping components... The components are related, such as the concrete track slab. The damping of the steel spring part only contributes to the system when it is large enough. The first innovation of the steel spring device of the floating slab track slab system of this utility model is to use the damping amplification flange and spring damping baffle to fully solve the problem of energy loss due to deformation or flow in the vertical and lateral dimensions of the damping body. This improves the problem of high vibration caused by the excitation of the track slab when the train passes, thereby reducing the low frequency vibration amplitude of the vibration isolation structure and the high frequency vibration amplitude of the track system (rails, fasteners, track slabs, shear hinges, spring support platforms, etc.) and vehicle system caused by vibration isolation, ensuring the vibration isolation effect and reducing the impact on the track and vehicles.

[0023] The second innovation of this utility model is the lateral limiting device, the key point of which is pre-deformation (due to inevitable errors in component manufacturing and installation, without a pre-deformation step, it is difficult to achieve lateral limiting of the track bed with large vertical deformation, as the steel spring needs to be raised by about 30mm during installation). This step utilizes a resistance elastic body to solve the lateral pre-compression and achieve the design stiffness requirements through vertical pre-deformation (the relative height between the upper and lower plates of the elastic body). This not only solves the gap caused by component manufacturing and installation errors (a commonly used friction pair technology), but also utilizes the shear deformation of the elastic material to provide vertical relative movement while simultaneously limiting lateral movement. Specifically, the track bed... The lateral limiting device of the track bed adopts a large pre-deformation nonlinear elastic impedance device between the inner and outer sleeves of the steel spring, which eliminates the manufacturing errors of components and construction and installation errors. At the same time, the large-scale variable cross-section lateral impedance elastic body provides lateral stiffness of the spring system by tensile and compressive pre-deformation and load shear deformation, avoiding the problem of spring fatigue fracture caused by lateral shear dynamic load on the spring itself. It also avoids the complex design and wear failure problems of vertical movement and lateral impedance friction pair, thereby improving lateral stability and reliability and the service life of its components. Due to the improved lateral buffering and stability of the steel spring, the track bed system also greatly improves the smoothness and comfort of train operation.

[0024] The transverse impedance multi-directional damping steel spring integrates transverse impedance and multi-directional damping, making the structural design compact and simple, with fewer parts, without changing the existing track bed and foundation design, and simplifying installation, construction and maintenance, thereby improving the operational safety of the track system and reducing operating costs.

[0025] This invention amplifies the damping device of the spring vibration isolation system, solving the problem of insufficient damping at the resonance peak of the vibration isolation frequency in existing vibration isolation technologies. Furthermore, by employing triaxial damping amplification, it can control the stability and vibration in directions perpendicular to the main vibration isolation direction, in addition to the main isolation direction. Simultaneously, a large-pre-deformation nonlinear elastic impedance device is used between the outer and inner sleeves of the spring. This device utilizes the large-scale variable cross-section transverse impedance elastic body for tensile and compressive pre-deformation and load shear deformation to provide lateral stiffness to the spring system, avoiding fatigue fracture failure caused by lateral shear dynamic loads on the spring itself. This improves lateral stability, reliability, and component lifespan, solving problems such as poor dynamic stability, high noise radiation from the vibration isolation body and structure, and high maintenance requirements in existing vibration isolation systems. Attached Figure Description

[0026] Figure 1 Cross-sectional view of a transverse impedance multi-directional damping steel spring device;

[0027] Figure 2 This is a top view of the inner sleeve and the enlarged damping flange of the transverse impedance multi-directional damping steel spring device.

[0028] Figure 3 This is a top view of the inner sleeve cover of the spring;

[0029] Figure 4 This is a schematic diagram of the cross-section of a transverse impedance elastic body;

[0030] Figure 5 This is a top view of a transverse impedance elastic body;

[0031] Figure 6 This is a cross-sectional view of a transverse resistance steel spring device;

[0032] Figure 7 Top view of another spring inner sleeve cap notch design;

[0033] Figure 8 A schematic diagram of the cross-section of another type of transverse impedance elastic body;

[0034] Reference numerals in the attached drawings: 1. Spring outer sleeve; 1-1. Lateral resistance elastomer base plate; 1-2. Inner surface of spring outer sleeve; 1-3. Bearing boss of spring outer sleeve; 2. Spring inner sleeve cover; 2-1. Inner sleeve cover notch; 3. Lateral resistance elastomer; 3-1. Elastomer notch; 4. Damping amplification flange; 4-1. Connecting rod; 4-2. Vertical resistance plate; 4-3. Lateral resistance plate; 4-4. Top of connecting rod; 4-5. Bottom surface of connecting rod; 5. Steel spring; 6. Spring inner sleeve base; 6-1. 6-1. Upper plate of transverse impedance elastomer; 6-2. Outer surface of spring inner sleeve; 6-3. Transverse limiting surface of spring inner sleeve; 6-4. Vertical limiting surface of spring inner sleeve; 6-5. Notch of elastomer upper plate; 7. Spring damping baffle; 8. Damping body; 8-1. Upper surface of spring damping body; 9. Height adjustment block; 10. Coupling pad of spring inner sleeve base; 11. Spring sealing sleeve; 12. Sealing sleeve cable tie; 13. Spring transverse positioning pin; 14. Positioning pin fixing layer; 15. Spring support platform; 16. Track bed plate. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0036] Example 1

[0037] like Figure 1 The transverse impedance multi-directional damping steel spring device shown includes a spring outer sleeve 1 (with a transverse impedance elastic body base plate 1-1 in the middle of its inner surface 1-2 and a spring outer sleeve bearing boss 1-3 at the top) and a spring inner sleeve. The spring inner sleeve includes a spring inner sleeve cover 2 and a spring inner sleeve base 6, which are connected as one unit by a spring sealing sleeve 11 and a sealing sleeve strap 12. The cavity of the spring inner sleeve contains a damping amplification flange 4, a steel spring 5, a spring damping baffle 7, and a damping body 8. The damping amplification flange 4 is rigidly connected to the spring inner sleeve cover 2, the spring damping baffle 7 is rigidly connected to the spring inner sleeve base 6, and the damping body 8 is placed inside the spring inner sleeve base 6. The structure of the spring inner sleeve cover 2 is as follows: Figure 3 As shown, its interface is circular and has three evenly spaced inner sleeve cap notches 2-1 around its perimeter.

[0038] A transversely limiting transverse impedance elastomer 3 is provided between the spring outer sleeve 1 and the spring inner sleeve base 6. Specifically, the inner side of the spring outer sleeve 1 is provided with a transverse impedance elastomer base plate 1-1, and the outer side of the spring inner sleeve base 6 is provided with a transverse impedance elastomer upper plate 6-1. The transverse impedance elastomer base plate 1-1, the inner surface 1-2 of the spring outer sleeve, the transverse impedance elastomer upper plate 6-1, and the outer surface 6-2 of the spring inner sleeve form a cavity for accommodating the transverse impedance elastomer 3. The transverse impedance elastomer 3 is in partial pre-compression contact with each contact surface of the cavity. The elastic pre-compression range is 0-50mm, and the elastic pre-compression of the transverse impedance elastomer 3 is determined by the design position of the transverse impedance elastomer upper plate 6-1 of the spring inner sleeve base 6 based on the position of the transverse impedance elastomer base plate 1-1 on the spring outer sleeve 1 and the height of the height adjustment block 9. In this embodiment, the elastic pre-compression range is 10mm.

[0039] The transverse impedance elastomer 3 is made of elastic rubber or a polymer elastic material, and its cross-section is a corrugated or pinned annular variable cross-section elastic ring. In this embodiment, the transverse impedance elastomer 3 is made of natural rubber material into an annular strip shape elastic element, such as... Figure 4 As shown, its cross-section is a circular cross-section formed by connecting thin plates, as... Figure 5 As shown, three elastic body notches 3-1 are provided around the circular cross-section for placing the transverse impedance elastic body 3 into the cavity.

[0040] Furthermore, the inner spring sleeve base 6 is fixed to the spring support platform 15 by the spring transverse positioning pin 13 through the positioning pin fixing layer 14; the outer spring sleeve 1 and the track bed slab 16 are cast together; the damping amplification flange 4 is welded to the inner spring sleeve cover 2, the spring damping baffle 7 is welded to the inner spring sleeve base 6, the damping body 8 is placed inside the inner spring sleeve base 6, and the outer spring sleeve 1 is directly connected to the damping amplification flange 4 through several height adjustment blocks 9 and the inner spring sleeve cover 2 (that is, the height adjustment blocks 9 are set between the bearing boss 1-3 of the outer spring sleeve and the top of the inner spring sleeve cover 2). The damping body 8 is in direct contact with the damping amplification flange 4, the spring damping baffle 7 and the lower part of the steel spring 5.

[0041] The damping amplification flange 4 includes a connecting rod 4-1, a vertical resistance plate 4-2, and a transverse resistance plate 4-3. The connecting rod 4-1 is welded to the bottom of the inner sleeve cover 2 by the top 4-4 of the connecting rod. The lower extension of the connecting rod 4-1 extends to the inner bottom surface of the inner sleeve base 6. The inner bottom surface of the inner sleeve base 6 is provided with an upwardly protruding vertical limiting surface 6-4 of the inner sleeve. After the bottom surface 4-5 of the connecting rod and the vertical limiting surface 6-4 of the inner sleeve are assembled, a limiting gap is left. The limiting gap ranges from 3 to 10 mm. In this embodiment, the limiting gap ranges from 6 ± 1 mm.

[0042] like Figure 1 As shown, multi-layered vertical resistance discs 4-2 are arranged in upper and lower layers on the connecting rod 4-1, and multiple transverse resistance plates 4-3 are arranged at the ends of each vertical resistance disc 4-2. In this embodiment, there are two layers of vertical resistance discs 4-2. The vertical resistance discs 4-2 and the transverse resistance plates 4-3 are discs with notches on their edges. The multiple notches divide the periphery of the discs into multiple working surfaces in multiple directions. A flange gap is left between each working surface to allow the damping body 8 to flow. The flange gap ranges from 0 to 100 mm. In this embodiment, the vertical resistance discs 4-2 and the transverse resistance plates 4-3 have three working surfaces in three directions, and a flange gap is left between each working surface to allow the damping body 8 to flow. The flange gap ranges from 20 ± 5 mm.

[0043] A spring inner sleeve base 6 and a spring support platform 15 are provided with a spring inner sleeve base coupling pad 10. The spring transverse positioning pin 13 passes through the spring inner sleeve base coupling pad 10 and engages with the spring inner sleeve transverse limiting surface 6-3 of the spring inner sleeve base 6 for positioning. The positioning pin fixing layer 14 is made of fast-curing insulating resin or a high-strength bonding material. In this embodiment, the positioning pin fixing layer 14 is made of fast-curing insulating resin.

[0044] Furthermore, the spring damping baffle 7 is inclinedly fixed inside the spring inner sleeve base 6, and its inclination angle is consistent with the rise angle of the steel spring 5, and a working gap is left for spring compression or tension, so that they do not interfere with each other. The working gap range is 5-50mm, and in this embodiment, the working gap range is 10±2mm.

[0045] The vertical resistance plate 4-2, the transverse resistance plate 4-3, the spring damping baffle 7, and the lower part of the steel spring 5 of the damping amplification flange 4 are embedded in the damping body 8. The damping body 8 is sealed in the inner cavity of the spring inner sleeve base 6 by the rubber spring sealing sleeve 11 and the steel cable tie 12.

[0046] The inner sleeve cover 2, the transverse resistance elastomer 3, and the upper plate 6-1 of the transverse resistance elastomer of the inner sleeve base are respectively provided with an assembly notch 2-1 for the inner sleeve cover, a notch 3-1 for the elastomer, and a notch 6-5 for the upper plate. The cross-section of the notch 2-1 for the inner sleeve cover, the notch 3-1 for the elastomer, and the notch 6-5 for the upper plate is larger than the bearing boss 1-3 of the outer sleeve of the spring. The notch shape of the notch 2-1 for the inner sleeve cover, the notch 3-1 for the elastomer, and the notch 6-5 for the upper plate is a triangular groove.

[0047] According to this embodiment, the steel spring device of the floating slab track bed system adopts damping amplification flange and spring damping baffle to fully solve the problem of energy dissipation due to multi-dimensional deformation or flow of the damping body in the vertical and lateral directions. This improves the problem of high vibration caused by vibration isolation resonance when the train passes, thereby reducing the low-frequency vibration amplitude of the vibration isolation structure and the high-frequency vibration amplitude of the track system (rails, fasteners, track bed slabs, shear hinges, spring support platforms, etc.) and vehicle system caused by vibration isolation, ensuring the vibration isolation effect and reducing the impact on the track and vehicles.

[0048] The lateral limiting of the track bed slab adopts a large pre-deformation nonlinear elastic impedance device between the inner and outer sleeves of the steel spring, eliminating manufacturing errors and construction and installation errors. At the same time, the large-scale variable cross-section lateral impedance elastic body is used to improve the lateral stiffness of the spring system by tensile and compressive pre-deformation and load shear deformation, avoiding the problem of spring fatigue fracture caused by lateral shear dynamic load on the spring itself. It also avoids the complex design and wear failure problems of vertical movement and lateral impedance friction pair, thereby improving lateral stability and reliability and the service life of its components. Due to the improved lateral buffering and stability of the steel spring, the track bed system also greatly improves the smoothness and comfort of train operation.

[0049] The transverse impedance multi-directional damping steel spring integrates transverse impedance and multi-directional damping, making the structural design compact and simple, with fewer parts, without changing the existing track bed and foundation design, and simplifying installation, construction and maintenance, thereby improving the operational safety of the track system and reducing operating costs.

[0050] Example 2

[0051] like Figure 6 The illustrated lateral impedance multi-directional damping steel spring device includes a spring outer sleeve 1 (with a lateral impedance elastic body base plate 1-1 in the middle of the inner surface 1-2 of the spring outer sleeve and a spring outer sleeve bearing boss 1-3 on the top), and a spring inner sleeve cover 2 (its structure is as follows). Figure 7 As shown, its interface is circular, and three evenly spaced inner sleeve cap notches 2-1 are provided around its perimeter. The area of ​​the inner sleeve cap notches 2-1 is much larger than that in Example 1. The transverse resistance elastic body 3 (its structure is as follows) Figure 8As shown), damping amplification flange 4, steel spring 5, spring inner sleeve base 6 (the outer surface 6-2 of the spring inner sleeve is provided with a transverse impedance elastic body upper plate 6-1, the inner bottom surface of which is provided with a spring inner sleeve vertical limiting surface 6-4, and also with a spring inner sleeve transverse limiting surface 6-3), height adjustment block 9, spring inner sleeve base coupling pad 10, spring transverse positioning pin 13, and a transverse limiting transverse impedance elastic body 3 is provided between the spring outer sleeve 1 and the spring inner sleeve base 6; the spring inner sleeve base 6 is fixed to the spring support platform 15 by the spring transverse positioning pin 13 through the positioning pin fixing layer 14; the spring outer sleeve 1 and the track bed slab 16 are cast together; the damping amplification flange 4 is welded to the spring inner sleeve cover 2, and the spring outer sleeve 1 is directly connected to the damping amplification flange 4 through several height adjustment blocks 9 and the spring inner sleeve cover 2;

[0052] The transverse impedance elastomer 3 is made of natural rubber elastic material in the form of a ring strip. Its cross section is an elliptical cross section connected by thin plates. The transverse impedance elastomer 3 is in partial pre-compression contact with the transverse impedance elastomer base plate 1-1 on the spring outer sleeve 1, the inner surface 1-2 of the spring outer sleeve, the transverse impedance elastomer upper plate 6-1 of the spring inner sleeve base 6, and the outer surface 6-2 of the spring inner sleeve of the spring inner sleeve base 6.

[0053] In this embodiment, the damping amplification flange 4 includes a connecting rod 4-1. The connecting rod 4-1 is welded to the bottom of the spring inner sleeve cover 2 by the top 4-4 of the connecting rod. After the bottom surface 4-5 of the connecting rod 4-1 is assembled with the vertical limiting surface 6-4 of the spring inner sleeve of the spring inner sleeve base 6, a limiting gap is left. The range of the limiting gap is 6±1mm.

[0054] The elastic preload of the transverse impedance elastomer 3 is determined by the design position of the transverse impedance elastomer upper plate 6-1 of the spring inner sleeve base 6 based on the position of the transverse impedance elastomer base plate 1-1 on the spring outer sleeve 1 and the height of the height adjustment block 9. The range of the elastic preload is 10mm.

[0055] The spring transverse positioning pin 13 is fixed to the spring support platform 15 as a whole through the positioning pin fixing layer 14. The spring transverse positioning pin 13 passes through the spring inner sleeve base coupling pad 10 and the spring inner sleeve base 6 positioning surface 6-4 for positioning. The material of the positioning pin fixing layer 14 is fast-curing insulating resin glue.

[0056] The inner sleeve cover 2, the transverse resistance elastomer 3, and the upper plate 6-1 of the transverse resistance elastomer of the inner sleeve base have assembly notches 2-1 for the inner sleeve cover, 3-1 for the elastomer, and 6-5 for the upper plate. The cross-section of the notches 2-1 for the inner sleeve cover, 3-1 for the elastomer, and 6-5 for the upper plate is larger than that of the bearing boss 1-3 of the outer sleeve of the spring. The notches 2-1 for the inner sleeve cover, 3-1 for the elastomer, and 6-5 for the upper plate are triangular grooves.

[0057] According to this embodiment, the lateral limiting of the track slab adopts a large pre-deformation nonlinear elastic impedance device between the inner and outer sleeves of the steel spring, eliminating component manufacturing errors and construction and installation errors. At the same time, the large-scale variable cross-section lateral impedance elastic body is used to improve the lateral stiffness of the spring system by tensile and compressive pre-deformation and load shear deformation, avoiding the problem of spring fatigue fracture caused by lateral shear dynamic load on the spring itself. It also avoids the complex design and wear failure problems of vertical motion and lateral impedance friction pairs. Lateral buffering also reduces the low-frequency lateral vibration amplitude of the vibration isolation structure and the high-frequency lateral vibration amplitude of the track system (rails, fasteners, track slab, shear hinges, spring support platforms, etc.) and vehicle system caused by vibration isolation, improving lateral stability and reliability and the life of its components. Due to the improved lateral buffering and stability of the steel spring, the track slab system also greatly improves the smoothness and comfort of train operation.

[0058] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A transversely resistive multidirectional dampened steel spring device, characterized in that, The spring includes an outer sleeve (1), a steel spring (5), and an inner sleeve. The inner sleeve includes an inner sleeve cover (2) and an inner sleeve base (6). A transversely limiting transverse impedance elastic body (3) is provided between the outer sleeve (1) and the inner sleeve base (6). The inner sleeve is also provided with a spring damping baffle (7) and a damping body (8). The spring damping baffle (7) is rigidly connected to the inner sleeve base (6), and the damping body (8) is placed inside the inner sleeve base (6). The inner sleeve cover (2) of the spring is further supported by a rigidly connected damping amplification flange (4).

2. The transverse impedance multidirectional damping steel spring device according to claim 1, wherein, The inner side of the spring outer sleeve (1) is provided with a transverse impedance elastomer base plate (1-1), and the outer side of the spring inner sleeve base (6) is provided with a transverse impedance elastomer upper plate (6-1). The lateral impedance elastomer base plate (1-1), the inner surface of the spring outer sleeve (1-2), the lateral impedance elastomer upper plate (6-1), and the outer surface of the spring inner sleeve (6-2) form a cavity for accommodating the lateral impedance elastomer (3), and the lateral impedance elastomer (3) is in local pre-compression contact with each contact surface of the cavity.

3. The transverse impedance multi-directional damping steel spring device according to claim 1 or 2, characterized in that, The transverse impedance elastomer (3) is made of a polymer elastic material, and its cross-section is a corrugated or pinned cross-section annular variable cross-section elastic ring. The elastic preload of the transverse impedance elastomer (3) is in the range of 0-50 mm.

4. The transverse impedance multidirectional damping steel spring device of claim 1, wherein, The damping amplification flange (4) includes a connecting rod (4-1). The connecting rod (4-1) is rigidly connected to the bottom of the inner sleeve cap (2) by the top of the connecting rod (4-4). The lower extension of the connecting rod (4-1) extends to the bottom surface of the inner sleeve base (6) of the spring. The inner bottom surface of the inner sleeve base (6) is provided with an upwardly protruding vertical limiting surface (6-4) of the inner sleeve. After the bottom surface (4-5) of the connecting rod and the vertical limiting surface (6-4) of the inner sleeve are assembled, a limiting gap is left. The limiting gap ranges from 3 to 10 mm.

5. The transversely resisting multi-directionally damped steel spring device of claim 4, wherein, The damping amplification flange (4) further includes a vertical resistance plate (4-2) and a horizontal resistance plate (4-3). The multi-layer vertical resistance plate (4-2) is arranged on the connecting rod (4-1) in layers, and multiple horizontal resistance plates (4-3) are arranged at the ends of each vertical resistance plate (4-2). The vertical resistance plate (4-2) and the horizontal resistance plate (4-3) are cylindrical with notches on the edges. Multiple notches divide the periphery of the cylinder into working surfaces in multiple directions. There are flange gaps between each working surface for the flow of the damping body (8). The flange gap ranges from 0 to 100 mm.

6. The lateral impedance multidirectional damping steel spring device of claim 1, wherein, The spring inner sleeve base (6) is fixed to the spring support platform (15) by the spring transverse positioning pin (13) through the positioning pin fixing layer (14); A spring inner sleeve base coupling pad (10) is provided between the spring inner sleeve base (6) and the spring support platform (15). The spring transverse positioning pin (13) passes through the spring inner sleeve base coupling pad (10) and the spring inner sleeve transverse limiting surface (6-3) of the spring inner sleeve base (6) for positioning. The material of the positioning pin fixing layer (14) is a fast-curing insulating resin or a high-strength bonding material.

7. The lateral impedance multidirectional damping steel spring device of claim 1, wherein, The spring damping baffle (7) is fixed at an inclination inside the spring inner sleeve base (6). Its inclination angle is consistent with the rise angle of the steel spring (5), and there is a working gap for spring compression or stretching, which do not interfere with each other. The working gap range is 5-50mm.

8. The lateral impedance multidirectional damping steel spring device of claim 1, wherein, The spring outer sleeve (1) and the track bed slab (16) are cast together; The spring outer sleeve (1) is connected to the spring inner sleeve cover (2) via a height adjustment block (9).

9. The lateral impedance multidirectional damping steel spring device of claim 1, wherein, The inner sleeve cover (2), the transverse impedance elastomer (3), and the upper plate (6-1) of the transverse impedance elastomer of the inner sleeve base are respectively provided with an assembly notch (2-1), an elastomer notch (3-1), and an upper plate notch (6-5). The cross-section of the notch (2-1), the elastomer notch (3-1), and the upper plate notch (6-5) is larger than that of the bearing boss (1-3) of the outer sleeve of the spring. The notch shape of the notch (2-1), the elastomer notch (3-1), and the upper plate notch (6-5) is a consistent triangular groove or curved groove.

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