Transverse impedance multidirectional damping steel spring device

Abstract

The invention 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 spring vibration isolation main direction can be controlled, meanwhile, the problem that the spring is subjected to transverse shearing dynamic load and consequently fatigue fracture and failure of the spring are caused is solved, and therefore the transverse stability and reliability are improved, and the service life of parts is prolonged.

Description

Technical Field

[0001] The invention is applicable to the field of rail transportation, and in particular relates to a transverse impedance multi-directional damping steel spring device. Background Art

[0002] In urban rail transit lines, sections with higher requirements for vibration reduction performance often use floating plate vibration reduction ballast systems to isolate the tracks from vibration, such as steel spring floating plate ballast, rubber spring floating plate ballast, etc.

[0003] Existing steel spring floating plate vibration-damping ballast systems all use discretely distributed steel springs to support the ballast plate, which brings a series of problems: (1) The vibration isolation effect of the steel spring floating plate ballast depends on the vibration isolation frequency. The lower the vibration isolation frequency, the better the vibration isolation effect. However, due to the low damping of the vibration isolation spring system, near and above the vibration isolation frequency, not only does it cause increased vibration of the ballast plate, track and vehicle, but the vibration of the structure to be isolated is also amplified at the vibration isolation frequency, reducing 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, and the lateral deformation of the track will directly affect driving safety, especially on curved lines. The decrease in the supporting stiffness of the floating plate roadbed will increase the deformation of the track, which will not only cause the rails and roadbed plates to bear greater bending moments and generate greater bending stresses, threatening the fatigue life of the rails and roadbed plates, but also reduce the stability and safety performance of the track system; (3) The lateral stability of the track will also directly affect the wave wear of the rails and the deformation of the wheels. The low-rigidity track system will also change the wheel-rail relationship, increase the rolling and creep fatigue damage of the wheel-rail, directly affect the service life of rail vehicle parts, and increase the maintenance work of rail vehicles. (4) The steel spring is subjected to the lateral dynamic load of the vehicle, especially on curved lines, which causes large shear strain in the spring itself, which can easily cause dynamic fatigue fracture of the spring.

[0004] Patents CN201459536U, CN201746746U and CN215405346U disclose methods of improving the damping effect by using a damping piston. However, since the open unconstrained damping fluid does not restrict the flow of the damping fluid, especially the flow of the damping in the spring area, the damping effect is difficult to play a role. In addition, since the steel spring is mainly subjected to the weight load of the vibration isolation body, such as the deadweight of the roadbed plate and the vehicle, and has no preload in the lateral direction, the lateral stability is poor. The existing spring lateral limit technology, such as CN103306168B, cannot eliminate the manufacturing errors of parts and the construction and installation errors because the elastic limit body has no pre-deformation. In addition, the existing technology is complex and inconvenient to maintain and cannot be implemented in the rail system. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a lateral impedance multi-directional damping steel spring device to solve the problems of poor lateral stability of the floating plate track bed system in the prior art, amplification of vibration of the isolated structure caused by the resonance of the low-damping floating plate track bed system isolation frequency accessories, and increased vibration of the track and vehicle, reduce the dynamic deformation of the rails and the floating plate, and solve the problems of poor dynamic stability of the existing floating plate track bed system, large vibration noise of the track bed plate and the rails, and amplification of vibration of the isolation structure at the isolation frequency.

[0006] The objective of the present invention can be achieved through the following technical scheme: a transverse impedance multi-directional damping steel spring device, comprising a spring outer sleeve, a steel spring, and a spring inner sleeve, wherein the spring inner sleeve comprises a spring inner sleeve cover and a spring inner sleeve base, and a transverse impedance elastomer with transverse limiting is arranged 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 elastic body bottom plate, and the outer side of the spring inner sleeve base is provided with a transverse impedance elastic body upper plate;

[0008] The transverse impedance elastic body bottom plate, the inner surface of the spring outer sleeve, the transverse impedance elastic body upper plate and the outer surface of the spring inner sleeve form a cavity for accommodating the transverse impedance elastic body, and the transverse impedance elastic body is in partial pre-compression contact with each contact surface of the cavity.

[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-section elastic ring with a corrugated or pinned cross section.

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

[0011] Furthermore, a spring damping baffle and a damping body are also provided in the spring inner sleeve; the spring damping baffle is rigidly connected to the spring inner sleeve base, and the damping body is placed in the spring inner sleeve base;

[0012] There is also a rigidly connected damping amplifying flange under the spring inner sleeve cover. Further, the damping amplifying flange includes a connecting rod, a vertical resistance disk and a transverse resistance plate, multiple layers of vertical resistance disks are arranged on the connecting rod in layers, and multiple transverse resistance plates are arranged at the ends of each vertical resistance disk.

[0013] Furthermore, the connecting rod is rigidly connected to the bottom of the spring inner sleeve cover by the top of the connecting rod, the bottom surface of the connecting rod extending from the bottom of the connecting rod to the inner bottom surface of the spring inner sleeve base, and the inner bottom surface of the spring inner sleeve base is provided with an upwardly protruding spring inner sleeve vertical limiting surface, and a limiting gap is left after the bottom surface of the connecting rod and the vertical limiting surface of the spring inner sleeve are assembled, and the range of the limiting gap is 3-10mm;

[0014] The vertical resistance disk and the transverse resistance plate are cylinders with notches on the edges. The notches divide the periphery of the disk into working surfaces in multiple directions. A flange gap is left between each working surface for the damping body to flow, and the range of the flange gap is 0-100mm.

[0015] Furthermore, the spring inner sleeve base is fixed as a whole with the spring support platform by a spring transverse positioning pin through a 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 locating 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 locating pin fixing layer is a fast-curing insulating resin glue or a high-strength bonding material.

[0017] Furthermore, the spring damping baffle is tilted and fixed in the spring inner sleeve base, and its tilt angle is consistent with the rising angle of the steel spring, and a working gap is left for spring compression or stretching without interfering with each other. The working gap range is 5-50mm.

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

[0019] The spring outer sleeve is connected with the spring inner sleeve cover through a height adjustment block.

[0020] Furthermore, the spring inner sleeve cover, the lateral impedance elastomer and the lateral impedance elastomer upper plate of the spring inner sleeve base respectively have an assembly inner sleeve cover notch, an elastomer notch and an elastomer upper plate notch, the notch cross-sections of the inner sleeve cover notch, the elastomer notch and the elastomer upper plate notch are larger than the spring outer sleeve bearing boss, and the notch shapes of the inner sleeve cover notch, the elastomer notch and the elastomer upper plate notch are consistent triangular grooves or curved grooves.

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

[0022] The present invention improves the damping of the steel spring. The so-called "damping spring" currently used in the market only has some damping liquid in the inner sleeve. Originally, the designers hoped that the compression movement of the steel spring and the friction of the damping liquid would consume energy, but in fact it has no effect (proven by a large number of tests). The reason is that after the train passes through the track bed, the steel spring is compressed and deformed by about 2-3mm at the upper part, while the lower part is zero. The damping liquid is at the lower part, and the energy consumption by the movement of the spring itself is almost zero. Other measures such as "piston" need to be adopted, but the problem is that only the vertical direction is considered without considering the lateral direction. In addition, the damping liquid is in a free state. Since the damping effect of the track system is different from other zeros, the damping effect of the track system is different from other zeros. The damping of the steel spring part can only contribute to the system when it is large enough. The first innovation of the steel spring device of the floating plate roadbed system of the present invention is to use the damping amplification flange and the spring damping baffle to fully solve the vertical and lateral multi-dimensional deformation or flow energy consumption of the damping body, thereby improving the vibration isolation resonance and high vibration problem caused by the excitation of the roadbed plate when the train passes, thereby reducing the low-frequency vibration amplitude of the vibration isolation structure caused by vibration isolation and the high-frequency vibration amplitude of the track system (rails, fasteners, roadbed plates, shear hinges, spring support platforms, etc.) and the vehicle system, ensuring the vibration isolation effect and reducing the impact on the track and the vehicle.

[0023] The second innovative point of the present invention is the lateral limit device, the key point is pre-deformation (due to the inevitable errors in the manufacture and installation of parts, if there is no pre-deformation link, the lateral limit of the roadbed plate with large vertical deformation is difficult to achieve, because the steel spring needs to be raised by about 30mm during installation and construction. By using this link, the impedance elastomer can be designed to solve the lateral pre-compression to achieve the design stiffness requirements through vertical pre-deformation (the relative height of the upper plate and the bottom plate of the elastomer). It not only solves the gap caused by the manufacturing and installation errors of parts (commonly used friction pair technology), but also uses the shear deformation of the elastic material to provide vertical relative movement while limiting the lateral position. Specifically, the roadbed The plate lateral limit adopts a large pre-deformation nonlinear elastic impedance device between the inner sleeve and the outer sleeve of the steel spring to eliminate component manufacturing errors and construction and installation errors. At the same time, the tensile and compressive pre-deformation and load shear deformation of the large-scale variable-section lateral impedance elastomer are used to provide the lateral stiffness of the spring system, avoiding the spring fatigue fracture caused by the lateral shear dynamic load on the spring itself, and avoiding the complex design and wear failure of the vertical movement and lateral impedance friction pair, thereby improving the lateral stability and reliability and the life of its components. The track bed system also greatly improves the smoothness and comfort of train operation due to the improvement of the lateral buffering and stability of the steel spring.

[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 and components. It does not change the existing track bed and foundation design, and is simple to install, construct and maintain, thereby improving the operational safety of the rail system and reducing operating costs.

[0025] The invention amplifies the damping device of the spring vibration isolation system, solves the defect of small damping of the vibration isolation frequency resonance peak value of the existing vibration isolation technology, and adopts three-way damping amplification to control the stability and vibration in the direction perpendicular to the main vibration isolation direction in addition to the main vibration isolation direction. At the same time, a large pre-deformation nonlinear elastic impedance device is adopted between the outer sleeve and the inner sleeve of the spring, and the tensile and compressive pre-deformation and load shear deformation of the large-scale variable-section transverse impedance elastic body are used to provide the lateral stiffness of the spring system, so as to avoid the problem of spring fatigue fracture failure caused by the transverse shear dynamic load of the spring itself, thereby improving the lateral stability and reliability and the life of its components, and solving the problems of poor dynamic stability of the existing vibration isolation system, large noise radiation of the vibration isolation vibrator and the vibration isolation structure, and large amount of structural maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0030] Figure 5 It is a top view of the lateral impedance elastic body;

[0031] Figure 6 It is a cross-sectional view of the transverse impedance steel spring device;

[0032] Figure 7 A top view of another design of a notch in the inner sleeve cover of a spring;

[0033] Figure 8 is a schematic diagram of a cross section of another transverse impedance elastic body;

[0034] Figure numerals: 1. Spring outer sleeve, 1-1. Transverse impedance elastic body bottom plate, 1-2. Spring outer sleeve inner surface, 1-3. Spring outer sleeve bearing boss, 2. Spring inner sleeve cover, 2-1. Inner sleeve cover notch, 3. Transverse impedance elastic body, 3-1. Elastic body notch, 4. Damping amplification flange, 4-1. Connecting rod, 4-2. Vertical resistance plate, 4-3. Transverse resistance plate, 4-4. Connecting rod top, 4-5. Connecting rod bottom surface, 5. Steel spring, 6. Spring inner sleeve base, 6-1. Transverse impedance elastic body upper plate, 6-2. Spring inner sleeve outer surface, 6-3. Spring inner sleeve transverse limiting surface, 6-4. Spring inner sleeve vertical limiting surface, 6-5. Elastic body upper plate notch, 7. Spring damping baffle, 8. Damping body, 8-1. Spring damping body upper surface, 9. Height adjustment block, 10. Spring inner sleeve base coupling pad, 11. Spring sealing sleeve, 12. Sealing sleeve tie, 13. Spring transverse locating pin, 14. Locating pin fixing layer, 15. Spring support table, 16. Roadbed plate. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0036] Example 1

[0037] like Figure 1 The illustrated transverse impedance multi-directional damping steel spring device comprises a spring outer sleeve 1 (a transverse impedance elastic body bottom plate 1-1 is provided in the middle of the inner surface 1-2 of the spring outer sleeve, and a spring outer sleeve bearing boss 1-3 is provided on the top), a spring inner sleeve, wherein the spring inner sleeve comprises a spring inner sleeve cover 2 and a spring inner sleeve base 6, the spring inner sleeve cover 2 and the spring inner sleeve base 6 are connected as a whole through a spring sealing sleeve 11 and a sealing sleeve tie 12, a damping amplification flange 4, a steel spring 5, a spring damping baffle 7 and a damping body 8 are provided in the cavity of the spring inner sleeve, wherein 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 in 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 in shape, and three inner sleeve cover notches 2-1 are evenly arranged around the periphery.

[0038] A transverse impedance elastomer 3 with a transverse limit is arranged between the spring outer sleeve 1 and the spring inner sleeve base 6; specifically, the inner side surface of the spring outer sleeve 1 is provided with a transverse impedance elastomer bottom plate 1-1, and the outer side surface of the spring inner sleeve base 6 is provided with a transverse impedance elastomer upper plate 6-1; the transverse impedance elastomer bottom 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, and the transverse impedance elastomer 3 is locally pre-stressed in contact with each contact surface of the cavity, and the elastic pre-stressing amount range is 0-50mm, and the elastic pre-stressing amount 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 according to the position of the transverse impedance elastomer bottom plate 1-1 on the spring outer sleeve 1 and the height of the height adjustment block 9. In this embodiment, the elastic pre-stressing amount range is 10mm.

[0039] The material of the transverse impedance elastic body 3 is elastic rubber or polymer elastic material, and its cross section is a ring-shaped variable cross-section elastic ring with a corrugated or nailed cross section. In this embodiment, the transverse impedance elastic body 3 is made of natural rubber material into an elastic element in the shape of a ring belt, such as Figure 4 As shown, its cross section is a circular cross section connected by thin plates, such as Figure 5 As shown, three elastic body notches 3-1 are provided around the circular cross section for placing the lateral impedance elastic body 3 in the above-mentioned cavity.

[0040] Further, the spring inner sleeve base 6 is fixed as a whole with 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 roadbed plate 16 are cast together; the damping amplification flange 4 is welded to the spring inner sleeve cover 2, the spring damping baffle 7 is welded to the spring inner sleeve base 6, the damping body 8 is placed in the spring inner sleeve base 6, the spring outer sleeve 1 is directly connected to the damping amplification flange 4 through a plurality of height adjustment blocks 9 and the spring inner sleeve cover 2 (that is, the height adjustment block 9 is arranged between the spring outer sleeve bearing boss 1-3 and the top of the spring inner sleeve cover 2), and 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 comprises a connecting rod 4-1, a vertical resistance disk 4-2 and a transverse resistance plate 4-3. The connecting rod 4-1 is welded to the bottom of the spring inner sleeve cover 2 by the connecting rod top 4-4. The connecting rod bottom surface 4-5 of the lower extending part of the connecting rod 4-1 is connected to the inner bottom surface of the spring inner sleeve base 6, and the inner bottom surface of the spring inner sleeve base 6 is provided with an upwardly protruding spring inner sleeve vertical limit surface 6-4. After the connecting rod bottom surface 4-5 and the spring inner sleeve vertical limit surface 6-4 are assembled, a limit gap is left, and the range of the limit gap is 3-10mm; in this embodiment, the range of the limit gap is 6±1mm.

[0042] like Figure 1 As shown, multiple layers of vertical resistance disks 4-2 are arranged on the connecting rod 4-1 in layers, and multiple transverse resistance plates 4-3 are arranged at the ends of each vertical resistance disk 4-2. In this embodiment, there are two layers of vertical resistance disks 4-2. The vertical resistance disks 4-2 and the transverse resistance plates 4-3 are disks with notches on the edges. Multiple notches divide the periphery of the disk into working surfaces in multiple directions. A flange gap is left between each working surface for the damping body 8 to flow. The range of the flange gap is 0-100mm. In this embodiment, a flange gap is left between each working surface of the vertical resistance disk 4-2 and the transverse resistance plate 4-3 in three directions for the damping body 8 to flow. The range of the flange gap is 20±5mm;

[0043] A spring inner sleeve base coupling pad 10 is provided between the spring inner sleeve base 6 and the spring support platform 15, and a spring locating 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, and the material of the locating pin fixing layer 14 is a fast-curing insulating resin glue or a bonding high-strength material. In this embodiment, the material of the locating pin fixing layer 14 is a fast-curing insulating resin glue.

[0044] Furthermore, the spring damping baffle 7 is tilted and fixed in the spring inner sleeve base 6, and its tilt angle is consistent with the rising angle of the steel spring 5, and a working gap is left for spring compression or stretching without interfering with each other. The working gap range is 5-50mm, and the working gap range in this embodiment 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 immersed in the damping body 8, and the damping body 8 is sealed in the inner cavity of the spring inner sleeve base 6 through the rubber spring sealing sleeve 11 and the steel cable tie 12;

[0046] The spring inner sleeve cover 2, the lateral impedance elastomer 3 and the lateral impedance elastomer upper plate 6-1 of the spring inner sleeve base are respectively provided with an inner sleeve cover assembly notch 2-1, an elastomer notch 3-1 and an elastomer upper plate notch 6-5. The notch cross-sections of the inner sleeve cover notch 2-1, the elastomer notch 3-1 and the elastomer upper plate notch 6-5 are larger than the spring outer sleeve bearing boss 1-3. The notch shapes of the inner sleeve cover notch 2-1, the elastomer notch 3-1 and the elastomer upper plate notch 6-5 are triangular grooves.

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

[0048] The lateral limit of the track bed plate adopts a large pre-deformation nonlinear elastic impedance device between the inner sleeve and the outer sleeve of the steel spring to eliminate the manufacturing errors of parts and the construction and installation errors. At the same time, the tensile and compressive pre-deformation and load shear deformation of the large-scale variable-section lateral impedance elastomer are used to improve the lateral stiffness of the spring system, avoid the spring fatigue fracture caused by the lateral shear dynamic load of the spring itself, and avoid the complex design and wear failure of the vertical movement and lateral impedance friction pair, thereby improving the lateral stability and reliability and the life of its parts. The track bed system also greatly improves the smoothness and comfort of train operation due to the improvement of lateral buffering and stability of the steel spring.

[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 and components. It does not change the existing track bed and foundation design, and is simple to install, construct and maintain, thereby improving the operational safety of the rail system and reducing operating costs.

[0050] Example 2

[0051] like Figure 6 The lateral impedance multi-directional damping steel spring device shown in FIG. 1 only uses lateral impedance, including a spring outer sleeve 1 (a lateral impedance elastic body bottom plate 1-1 is provided in the middle of the inner surface 1-2 of the spring outer sleeve, and a spring outer sleeve bearing boss 1-3 is provided on the top), a spring inner sleeve cover 2 (its structure is as shown in FIG. Figure 7 As shown, the interface is circular, and three inner sleeve cover gaps 2-1 are evenly arranged around the periphery, and the area of ​​the inner sleeve cover gap 2-1 is much larger than that of embodiment 1), the transverse impedance elastic body 3 (its structure is as shown 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, and the inner bottom surface thereof is provided with a spring inner sleeve vertical limiting surface 6-4, and 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, a transverse impedance elastic body 3 with transverse limiting is provided between the spring outer sleeve 1 and the spring inner sleeve base 6; the spring inner sleeve base 6 is fixed as a whole with 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 roadbed plate 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 a plurality of height adjustment blocks 9 and the spring inner sleeve cover 2;

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

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

[0054] The elastic preload of the transverse impedance elastic body 3 is determined by the design position of the transverse impedance elastic body upper plate 6-1 of the spring inner sleeve base 6 according to the position of the transverse impedance elastic body bottom plate 1-1 on the spring outer sleeve 1 and the height of the height adjustment block 9, and the elastic preload range 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 a fast-curing insulating resin glue.

[0056] The spring inner sleeve cover 2, the lateral impedance elastomer 3 and the lateral impedance elastomer upper plate 6-1 of the spring inner sleeve base are provided with an inner sleeve cover notch 2-1, an elastomer notch 3-1 and an elastomer upper plate notch 6-5 for assembling. The notch cross-sections of the inner sleeve cover notch 2-1, the elastomer notch 3-1 and the elastomer upper plate notch 6-5 are larger than the spring outer sleeve bearing boss 1-3. The notch shapes of the inner sleeve cover notch 2-1, the elastomer notch 3-1 and the elastomer upper plate notch 6-5 are triangular grooves.

[0057] According to this embodiment, the lateral limit of the track bed plate adopts a large pre-deformation nonlinear elastic impedance device between the inner sleeve and the outer sleeve of the steel spring to eliminate component manufacturing errors and construction and installation errors. At the same time, the lateral stiffness of the spring system is improved by using the tensile and compressive pre-deformation and load shear deformation of the large-scale variable-section lateral impedance elastomer, avoiding the problem of spring fatigue fracture caused by the lateral shear dynamic load of the spring itself, and avoiding the complex design and wear failure of the vertical movement and lateral impedance friction pair. The lateral buffering also reduces the low-frequency lateral vibration amplitude of the vibration isolation structure caused by vibration isolation and the high-frequency lateral vibration amplitude of the track system (rails, fasteners, track bed plates, shear hinges, spring support platforms, etc.) and the vehicle system, thereby improving the lateral stability and reliability and the life of its components. The track bed system also greatly improves the smoothness and comfort of train operation due to the improvement of the lateral buffering and stability of the steel spring.

[0058] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A transverse impedance multi-directional damping steel spring device, characterized in that: The invention comprises a spring outer sleeve (1), a steel spring (5), and a spring inner sleeve, wherein 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).

2. A transverse impedance multi-directional damping steel spring device according to claim 1, characterized in that: The inner side surface of the spring outer sleeve (1) is provided with a transverse impedance elastic body bottom plate (1-1), and the outer side surface of the spring inner sleeve base (6) is provided with a transverse impedance elastic body upper plate (6-1); The transverse impedance elastic body bottom plate (1-1), the inner surface of the spring outer sleeve (1-2), the transverse impedance elastic body upper plate (6-1) and the outer surface of the spring inner sleeve (6-2) form a cavity for accommodating the transverse impedance elastic body (3), and the transverse impedance elastic body (3) is in local pre-pressure contact with each contact surface of the cavity.

3. A transverse impedance multi-directional damping steel spring device according to claim 1 or 2, characterized in that: The material of the transverse impedance elastic body (3) 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; The elastic preload range of the transverse impedance elastic body (3) is 0-50 mm.

4. A transverse impedance multi-directional damping steel spring device according to claim 1, characterized in that: A spring damping baffle (7) and a damping body (8) are also provided in the spring inner sleeve; the spring damping baffle (7) is rigidly connected to the spring inner sleeve base (6), and the damping body (8) is placed in the spring inner sleeve base (6); A rigidly connected damping amplifying flange (4) is also provided under the spring inner sleeve cover (2).

5. A transverse impedance multi-directional damping steel spring device according to claim 4, characterized in that: The damping amplification flange (4) comprises a connecting rod (4-1), wherein the connecting rod (4-1) is rigidly connected to the bottom of the spring inner sleeve cover (2) via the connecting rod top (4-4), the bottom surface (4-5) of the connecting rod extending downward from the connecting rod (4-1) to the inner bottom surface of the spring inner sleeve base (6), and the inner bottom surface of the spring inner sleeve base (6) is provided with an upwardly protruding spring inner sleeve vertical limit surface (6-4), and a limit gap is left after the connecting rod bottom surface (4-5) and the spring inner sleeve vertical limit surface (6-4) are assembled, and the range of the limit gap is 3-10 mm.

6. A transverse impedance multi-directional damping steel spring device according to claim 5, characterized in that: The damping amplifying flange (4) further comprises a vertical resistance disk (4-2) and a transverse resistance plate (4-3), wherein the multiple layers of vertical resistance disks (4-2) are arranged in layers on the connecting rod (4-1) and the multiple transverse resistance plates (4-3) are arranged at the end of each vertical resistance disk (4-2); The vertical resistance disk (4-2) and the transverse resistance plate (4-3) are cylinders with notches on the edges. The notches divide the periphery of the cylinder into working surfaces in multiple directions. A flange gap is left between each working surface for the damping body (8) to flow, and the range of the flange gap is 0-100 mm.

7. A transverse impedance multi-directional damping steel spring device according to claim 1, characterized in that: The spring inner sleeve base (6) is fixed as a whole with the spring support platform (15) by a spring transverse positioning pin (13) through a 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); a spring locating 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 locating pin fixing layer (14) is a fast-curing insulating resin glue or a bonding high-strength material.

8. The lateral impedance multi-directional damping steel spring device according to claim 2, characterized in that: The spring damping baffle (7) is tilted and fixed in the spring inner sleeve base (6), and its tilt angle is consistent with the rising angle of the steel spring (5), and a working gap is left for spring compression or stretching without interfering with each other. The working gap ranges from 5 to 50 mm.

9. The lateral impedance multi-directional damping steel spring device according to claim 1, characterized in that: The spring outer sleeve (1) and the track bed plate (16) are cast together; The spring outer sleeve (1) is connected to the spring inner sleeve cover (2) via a height adjustment block (9).

10. The lateral impedance multi-directional damping steel spring device according to claim 1, characterized in that: The spring inner sleeve cover (2), the transverse impedance elastomer (3) and the transverse impedance elastomer upper plate (6-1) of the spring inner sleeve base respectively have an inner sleeve cover assembly notch (2-1), an elastomer notch (3-1) and an elastomer upper plate notch (6-5); the notch cross-sections of the inner sleeve cover notch (2-1), the elastomer notch (3-1) and the elastomer upper plate notch (6-5) are larger than the spring outer sleeve bearing boss (1-3); the notch shapes of the inner sleeve cover notch (2-1), the elastomer notch (3-1) and the elastomer upper plate notch (6-5) are consistent triangular grooves or curved grooves.

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