Vibration damper and floating slab track thereof

Abstract

The utility model belongs to the technical field of track vibration reduction, and particularly relates to a vibration reduction device and a floating slab track thereof. The utility model relates to a vibration damping device, which comprises an inner cylinder body, an outer cylinder body and a damping device, the isolation pipe fitting is arranged in the inner cylinder body, is fixedly connected with the bottom of the inner cylinder body and is used for dividing an inner cavity of the inner cylinder body into an annular cylindrical cavity body and a cylindrical cavity body; the spring piece is located in the annular cylindrical cavity, and the two ends of the spring piece abut against the top and the bottom of the inner barrel correspondingly; the support is used for supporting the floating slab track and isolating vibration; the inerter assembly is located in the cylindrical cavity, the inerter assembly is fixedly connected with the top of the inner barrel and fixedly connected with the top of the isolation pipe fitting, and the inerter assembly is used for amplifying the inertia effect, converting tiny linear vibration into large-amplitude rotating motion, absorbing vibration energy of the floating slab track and converting the vibration energy into heat energy; and the outer barrel is used for accommodating and fixing the inner barrel.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail damping technology field especially, it relates to a damping device and its floating slab track. BACKGROUND

[0002] Steel spring floating slab track is a kind of damping track structure form that is widely used in urban rail transit and has better effect.The traditional steel spring floating slab track works through traditional steel spring vibration isolator, and the basic principle is that the vibration isolation of steel spring is combined with the viscous damping effect of damping grease, when the track slab vibrates up and down, steel spring isolates the upper rail vibration from the lower track foundation under the premise of supporting track structure to ensure train operation safety, reduces the influence of rail transit environmental vibration on sensitive buildings, people and precision instruments around track line.At the same time, damping grease is wrapped on steel spring, and is extruded and sheared in the deformation process of steel spring, plays viscous damping effect and dissipates energy.However, the traditional steel spring floating slab track still has damping defects, because the vertical vibration displacement of track slab and the vertical deformation of steel spring are required to be within ±3mm, so the extrusion and shearing effect of damping grease is limited, the viscous damping effect of damping grease is limited and cannot completely dissipate the vibration energy isolated by spring, cause the problem that the damping capacity of traditional floating slab track to low-frequency environmental vibration within 20Hz is insufficient, and part of vibration energy is isolated on the upper part of track structure, cause problems such as fastener vibration loosening, steel rail wear, wheel-rail vibration noise increase, vehicle vibration noise intensification and the like.In addition to the damping defect problem, the steel spring vibration isolator used in the traditional steel spring floating slab track uses fluid or semi-solid gel viscous damping grease, and there is a risk of damping grease overflow during transportation and installation. SUMMARY

[0003] The utility model aims at solving the above-mentioned insufficient, provide a kind of damping device and its floating slab track.

[0004] A damping device, the damping device includes:

[0005] Inner cylinder, for telescopic along the first direction;

[0006] Isolation pipe, be arranged in the inner cylinder interior and with the bottom of the inner cylinder fixed connection, for the inner cavity of the inner cylinder is divided into annular cylindrical cavity and cylindrical cavity;

[0007] Spring piece, located in the annular cylindrical cavity, and the top and bottom of the inner cylinder are respectively abutted;For supporting floating slab track and isolating vibration;

[0008] An inertial component is arranged in the cylindrical cavity, and is fixedly connected to the top of the inner cylinder and the top of the isolation pipe;

[0009] An outer cylinder is arranged to accommodate and fix the inner cylinder.

[0010] Further, the inner cylinder comprises a top cover, a flexible protective sleeve and a bottom cylinder; the upper and lower ends of the flexible protective sleeve are fixedly connected to the edges of the top cover and the bottom cylinder respectively, forming a closed telescopic shell.

[0011] Further, one end of the spring is abutted against the bottom of the bottom cylinder, and the other end is compressively abutted against the top cover.

[0012] Further, the inertial component comprises a ball screw, a ball nut and an inertial flywheel; the top of the ball screw is fixedly connected to the top cover, the ball nut is sleeved on the ball screw and connected and driven by the balls inside the ball screw, the bottom of the ball nut is fixedly connected to the inertial flywheel and can drive the inertial flywheel to rotate around the axis.

[0013] Further, the inertial component further comprises a rigid friction damping sleeve, which is sleeved on the outer wall of the inertial flywheel and tightly abuts against the isolation pipe;

[0014] The rigid friction damping sleeve comprises an inner ring, an outer ring and an elastic component; the inner ring tightly abuts against the outer wall of the inertial flywheel and can rotate relatively; a friction damping sheet is arranged between the inner ring and the inertial flywheel, and is used to increase the friction between the inner ring and the outer wall of the inertial flywheel.

[0015] The outer ring tightly abuts against the inner wall of the isolation pipe; the outer ring is provided with a limiting groove extending along the length direction; the inner wall of the isolation pipe is provided with a limiting protrusion extending along the length direction and matching the shape of the limiting groove; the limiting groove and the limiting protrusion are clamped and do not rotate relatively.

[0016] The inner ring and the outer ring are connected by the elastic component, and the elastic component can be elastically bent and deformed; the outer ring and the inner ring are rigid components and do not deform.

[0017] Further, the inertia component further comprises a bearing, a bearing seat and a connecting piece; an inner ring of the bearing is fixedly connected to a side wall of the ball nut, an outer ring of the bearing is fixed in the bearing seat matched in shape, a bottom of the bearing seat is fixedly connected with the connecting piece, the bearing seat, the connecting piece and the outer diameter of the isolation pipe are same, and the bottom of the connecting piece is fixedly connected with the isolation pipe and seals the cylindrical cavity.

[0018] Further, an outer periphery contour of the top cover is provided with a convex portion clamping structure, which is used for clamping and fixing the inner cylinder.

[0019] Further, the outer cylinder comprises an outer cylinder cover plate and an outer cylinder body; an inner wall of the outer cylinder body is provided with a recess clamping structure, which is used for clamping and connecting with the convex portion clamping structure provided on the outer contour of the top cover; the outer cylinder cover plate is arranged on the top of the outer cylinder body, and is used for sealing the outer cylinder.

[0020] Further, an outer wall of the outer cylinder is provided with a lifting lug, which is used for increasing the engagement force between the outer cylinder and concrete and limiting and fixing the outer cylinder.

[0021] Secondly, a floating slab track, adopting the following technical scheme:

[0022] A floating slab track, the floating slab track comprises the damping device, a steel rail, a floating slab and a foundation; the outer cylinder of the damping device is embedded in the floating slab, and the inner cylinder of the damping device is accommodated in the outer cylinder; the steel rail is symmetrically arranged on the floating slab, and the floating slab is arranged on the foundation.

[0023] The utility model has the advantages of:

[0024] The utility model provides a kind of damping device, high-efficiency isolation, absorption and dissipation to floating slab track vibration energy are realized by unique structure.It is effectively adapted to vibration change by telescopic function of inner cylinder, and the cavity of inner cylinder is separated into annular cylindrical cavity and cylindrical cavity by isolation pipe fitting, respectively accommodate spring piece and inertial mass component, and form the coordinated action of spring vibration isolation, inertial mass vibration absorption and energy conversion.Spring piece can isolate vibration while providing support, and inertial mass component further converts the tiny linear motion generated by track vibration into large-scale rotary motion by amplifying inertia effect, utilizes inertia flywheel and internal mechanical structure to convert vibration energy into heat energy dissipation efficiently, enhances the damping effect of low-frequency vibration.In addition, outer cylinder provides reliable protection and fixing function for the whole device, so that the device has higher adaptability and durability in complex engineering environment, thereby effectively solve the deficiency of traditional damping device in low-frequency vibration processing, energy dissipation and installation reliability, improve the damping performance and service life of track structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0026] Figure 2 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0027] Figure 3 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0028] Figure 4 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0029] Figure 5 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0030] Figure 6 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0031] Figure 7 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0032] Figure 8 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0033] Figure 9 It is the sectional view schematic diagram of inner cylinder in the damping device provided by the utility model;

[0034] Figure 10The utility model provides a damping device top view of outer cylinder body.

[0035] Figure 11 The utility model provides a structure schematic diagram of floating slab track.

[0036] Fig. 1, damping device 10, inner cylinder body 20, isolation pipe spare 30, spring spare 40, inertial flywheel spare 41, ball screw 42, ball nut 43, rigid friction damping cover 44, bearing piece 45, bearing seat 46, second pre-tightening bolt 47, third pre-tightening bolt 48, 50, outer cylinder body 2, floating slab track 60, steel rail 70, foundation 11, top cap 111, convex part clamping structure 12, flexible protective sleeve 13, bottom cylinder 14, hoop spare 21, limiting convex part 41, ball screw 42, ball nut 43, inertial flywheel spare 44, rigid friction damping cover 441, inner ring 442, outer ring 4421, limiting groove 443, elastic part 45, bearing piece 46, bearing seat 47, second pre-tightening bolt 48, third pre-tightening bolt 51, cover plate 52, outer cylinder body 521, recess clamping structure 53, lug spare. DETAILED DESCRIPTION

[0037] The utility model discloses a damping device and floating slab track thereof are further specifically described in the following combining embodiment. For the need of simple and easy description, all alternative technical features and implementation schemes that the utility model contains cannot be exhausted in this document, therefore the person skilled in the art should know that any technical feature and implementation scheme in this embodiment does not limit the protection scope of the utility model, and the protection scope includes any alternative technical feature and implementation scheme that the person skilled in the art does not take creative labor. Specifically, the implementation scheme obtained by replacing any technical feature in the utility model or by mutually combining any two and above technical features provided by the utility model should be within the protection scope of the utility model.

[0038] The embodiment provides a damping device 1, as shown in Figure 1 、 11 The damping device 1 includes:

[0039] The inner cylinder body 10 is used for telescoping along the first direction.

[0040] The isolation pipe spare 20 is arranged inside the inner cylinder body 10 and is fixedly connected with the bottom of the inner cylinder body 10, and is used for separating the internal cavity of the inner cylinder body 10 into an annular cylindrical cavity and a cylindrical cavity.

[0041] The spring spare 30 is located in the annular cylindrical cavity and abuts against the top and the bottom of the inner cylinder body 10 at two ends respectively, and is used for supporting the floating slab track 2 and isolating vibration.

[0042] The inertial-capacitance assembly 40 is located inside the cylindrical cavity. The inertial-capacitance assembly 40 is fixedly connected to the top of the inner cylinder 10 and to the top of the isolation pipe 20. It is used to amplify the inertial effect, convert small linear vibrations into large rotational motions, and absorb the vibration energy of the floating plate track 2 into heat energy.

[0043] The outer cylinder 50 is used to accommodate and fix the inner cylinder 10.

[0044] The vibration damping device 1 provided in this embodiment adapts to the vibration changes of the floating slab track 2 through the expansion and contraction characteristics of the inner cylinder 10, thereby isolating and absorbing vibration energy. The inner cylinder 10 is divided into an annular cavity and a cylindrical cavity by the isolation pipe 20, forming independent spaces where the spring 30 and the inertial capacitance component 40 act respectively, allowing for multi-level processing of vibration energy. The spring 30, located in the annular cavity, effectively isolates the propagation of vibration while supporting the floating slab track 2 through its contact with the inner cylinder 10 at both ends. The inertial capacitance component 40, located in the cylindrical cavity, utilizes its inertial amplification effect to convert minute linear vibrations into large-amplitude rotational motion, further dissipating the vibration energy into heat, thus improving the vibration damping effect of low-frequency vibrations. The outer cylinder 50, as the external support and protection component of the overall structure, not only provides stability but also ensures the reliability of the device's installation and operation, enabling the vibration damping device 1 to achieve more efficient vibration damping performance in the floating slab track 2 system.

[0045] In some embodiments, such as Figure 2 As shown, the inner cylinder 10 includes a top cover 11, a flexible protective sleeve 12, and a bottom cylinder 13. The upper and lower ends of the flexible protective sleeve 12 are respectively fastened to the edges of the top cover 11 and the bottom cylinder 13 to form a closed, expandable shell. Specifically, the upper and lower ends of the flexible protective sleeve 12 are fastened to the edges of the top cover 11 and the bottom cylinder 13 through a clamp 14. The flexible protective sleeve 12 can adapt to vertical expansion and contraction deformation, thereby giving the inner cylinder 10 the characteristic of expansion and contraction deformation along the first direction, i.e., the vertical direction.

[0046] The inner cylinder 10, through its structure comprising a top cover 11, a flexible protective sleeve 12, and a bottom cylinder 13, possesses excellent extensibility. The upper and lower ends of the flexible protective sleeve 12 are securely connected to the edges of the top cover 11 and the bottom cylinder 13, respectively, forming a closed, expandable shell. This structure provides effective protection during rail 60 vibration, preventing external environmental interference with the internal components of the inner cylinder 10, while accommodating the expansion and contraction of the inner cylinder 10 in the first direction, thus improving the overall stability and service life of the device. Furthermore, the closed structure prevents internal components from degrading due to the intrusion of external contaminants, further ensuring the reliability and vibration reduction effect of the vibration damping device 1 under complex operating conditions.

[0047] In some embodiments, one end of the spring member 30 abuts the bottom of the bottom cylinder 13, and the other end compressively abuts the top cover 11.

[0048] The one end of the spring member 30 abuts the bottom of the bottom cylinder 13, and the other end compressively abuts the top cover 11, which ensures that the spring member 30 is always in a stable working state during vertical vibration. By abutting the spring member 30 with the bottom cylinder 13 and the top cover 11, the gravity load of the floating slab track 2 can be effectively supported, and at the same time, elastic vibration isolation can be provided when the steel rail 60 vibrates, reducing the transmission of vibration energy to the lower part. In addition, this compressive abutting mode ensures that the spring member 30 can quickly respond to changes in vibration displacement during vibration, thereby achieving efficient vibration isolation effect and improving the performance and service life of the vibration reduction device 1.

[0049] In some embodiments, as shown in Figure 3 , 4 The inertial flywheel member 43 is fixedly connected to the bottom of the flange of the ball nut 42, and can drive the axial rotation of the inertial flywheel member 43. Specifically, the top of the ball screw 41 is fixed on the top cover 11 by the first pre-tightening bolt, and the top cover 11 is sunken, and the top of the ball screw 41 and the first pre-tightening bolt is not higher than the top cover 11; the flange of the ball nut 42 is downward, and the bottom of the flange is fixed to the inertial flywheel member 43 by the second pre-tightening bolt 47.

[0050] The inertial flywheel member 43 is fixedly connected to the bottom of the flange of the ball nut 42, and can drive the axial rotation of the inertial flywheel member 43. Specifically, the top of the ball screw 41 is fixed on the top cover 11 by the first pre-tightening bolt, and the top cover 11 is sunken, and the top of the ball screw 41 and the first pre-tightening bolt is not higher than the top cover 11; the flange of the ball nut 42 is downward, and the bottom of the flange is fixed to the inertial flywheel member 43 by the second pre-tightening bolt 47.

[0051] The structure enables the inertial flywheel 43 to effectively utilize the vibration displacement of the rail 60, converts the tiny linear vibration into large rotational motion through the transmission of the ball screw 41, thereby realizing the inertial amplification effect, converting the vibration energy of the rail 60 into mechanical rotational energy of the flywheel, and providing a good basis for subsequent energy dissipation. At the same time, the precise connection design of the inertance component 40 improves the overall structural stability and energy conversion efficiency, ensuring the reliability and durability of the device under complex working conditions.

[0052] In some embodiments, Figure 5 、 6 、7. The inertance component 40 further comprises a rigid friction damping sleeve 44, which is sleeved on the outer wall of the inertial flywheel 43 and tightly fits with the isolation pipe 20.

[0053] The rigid friction damping sleeve 44 comprises an inner ring 441, an outer ring 442, and an elastic component 443. The inner ring 441 tightly fits the outer wall of the inertial flywheel 43 and can rotate relatively. A friction damping sheet is arranged between the inner ring 441 and the inertial flywheel 43 to increase the friction between the inner ring 441 and the outer wall of the inertial flywheel 43.

[0054] The outer ring 442 tightly fits the inner wall of the isolation pipe 20. The outer ring 442 is provided with a limiting groove 4421 extending along the length direction. The inner wall of the isolation pipe 20 is provided with a limiting protrusion 21 extending along the length direction, which matches the shape of the limiting groove 4421. The limiting groove 4421 and the limiting protrusion 21 are clamped and do not rotate relatively.

[0055] The inner ring 441 and the outer ring 442 are connected by the elastic component 443, which can be elastically bent and deformed. The outer ring 442 and the inner ring 441 are rigid components and do not deform.

[0056] The friction damping sleeve is sleeved on the outer wall of the inertial flywheel 43 and tightly fits with the isolation pipe 20, which is composed of an inner ring 441, an outer ring 442, and an elastic component 443. The inner ring 441 tightly fits the outer wall of the inertial flywheel 43 and can rotate relatively. A friction damping sheet arranged between the inner ring 441 and the inertial flywheel 43 effectively increases the friction between the inner ring 441 and the outer wall of the flywheel, thereby efficiently converting the rotational mechanical energy into heat dissipation.

[0057] The outer ring 442 fits tightly against the inner wall of the isolation pipe 20, and is securely engaged by a limiting groove 4421 and a limiting protrusion 21 along its length, ensuring that the outer ring 442 does not rotate relative to the device during operation, thus enhancing structural stability. The inner ring 441 and the outer ring 442 are connected by an elastic component 443, which can undergo elastic bending deformation under external force, further absorbing vibration energy while ensuring the overall flexibility and adaptability of the rigid friction damping sleeve 44. In addition, both the inner ring 441 and the outer ring 442 are rigid components, ensuring that they do not deform during vibration and friction, thus improving the service life and stability of the device.

[0058] This component fully utilizes the combination of inertial capacitance component 40 and friction damping. On the basis of inertial amplification, it dissipates vibration energy through friction, thereby improving the response efficiency of vibration reduction device 1 to low-frequency vibration and reducing the transmission of vibration energy to the upper and lower parts of the rail 60 structure. This significantly improves the overall vibration reduction performance and reliability of the floating slab track 2 system.

[0059] In some embodiments, such as Figure 3 , 4 As shown. The inertial capacity assembly 40 also includes a bearing component 45, a bearing housing 46, and a connector; the inner ring of the bearing component 45 is fixedly connected to the side wall of the ball nut 42, the outer ring of the bearing component 45 is fixedly fixed in the bearing housing 46 which matches its shape, the bottom of the bearing housing 46 is fixedly connected to the connector, the bearing housing 46, the connector and the isolation tube 20 have the same outer diameter, and the bottom of the connector is fixedly connected to the isolation tube 20 and closes the cylindrical cavity. Specifically, a bearing component 45 is installed on the side wall of the ball nut 42. The inner ring of the bearing component 45 is fixed to the side wall of the ball nut 42 by interference fit, bolt connection or snap ring stop connection. The outer ring of the bearing component 45 is fixed in a bearing seat 46 with a matching shape. The bearing seat 46 is bolted to the connector by a third preload bolt 48. The outer diameter of the bearing seat 46 and the connector is equal to the outer diameter of the isolation tube 20 and the outer walls are aligned. The bottom of the connector is welded to the isolation tube 20 and the cylindrical cavity is sealed.

[0060] The inertia-capacity assembly 40 further optimizes its stability and overall performance by introducing a structure consisting of a bearing component 45, a bearing housing 46, and a connecting member. The inner ring of the bearing component 45 is securely mounted on the side wall of the ball nut 42 via an interference fit, bolt connection, or snap ring stop connection, ensuring that the bearing component 45 maintains precise mechanical transmission with the movement of the ball nut 42. The outer ring of the bearing component 45 is embedded in a bearing housing 46 that matches its shape. The bearing housing 46 is fixed to the connecting member by a third preload bolt 48, forming a stable support structure.

[0061] The outer diameter of the bearing seat 46 and the connecting piece is consistent with the outer diameter of the isolation pipe 20, and the outer wall is aligned and installed, effectively preventing misalignment between the components, and enhancing the structural integrity of the inertial mass component 40. The bottom of the connecting piece is firmly connected with the isolation pipe 20 by welding, and the cylindrical cavity is closed, thereby improving the sealing performance of the system and avoiding interference of the external environment on the internal components.

[0062] This structure not only improves the mechanical reliability of the inertial mass component 40, but also ensures that the movement of the ball nut 42 can be efficiently transmitted to the inertia flywheel 43 through precise transmission cooperation. Through the stable support of the bearing piece 45 and the firm fixation of the connecting piece, the inertial mass component 40 realizes stable amplification of the inertial effect in the dynamic working process, while avoiding possible mechanical looseness or failure, further improving the long-term use reliability and overall performance of the vibration damping device 1.

[0063] In some embodiments, as shown in Figure 2 The outer periphery of the top cover 11 is provided with a convex clamping structure 111 for clamping and fixing the inner cylinder body 10. Specifically, the outer periphery of the top cover 11 is annularly arranged with convex structures, which can be clamped and fixed with matching concave structures to avoid shaking and tilting, thereby enhancing the stability and reliability of the vibration damping device 11.

[0064] The outer periphery of the top cover 11 is designed to have a convex clamping structure 111 for firmly fixing the inner cylinder body 10. Specifically, the outer periphery of the top cover 11 is annularly arranged with a plurality of convex structures, which are clamped with matching concave structures, thereby realizing firm connection between the inner cylinder body 10 and the external components. Through this clamping method, not only is shaking or tilting of the inner cylinder body 10 during operation effectively prevented, but also the overall stability and reliability of the vibration damping device 1 are significantly enhanced. This structure design can provide higher connection strength and impact resistance in a vibrating environment, while simplifying the installation and maintenance process of the device, further improving the adaptability and durability of the vibration damping device 1.

[0065] In some embodiments, as shown in Figure 8 , 9 The outer cylinder body 50 includes an outer cylinder body 50 cover plate 51 and an outer cylinder body 52; the inner wall of the outer cylinder body 52 is provided with a concave clamping structure 521 for clamping connection with the convex clamping structure 111 provided on the outer periphery of the top cover 11; the outer cylinder body 50 cover plate 51 is arranged on the top of the outer cylinder body 52 for closing the outer cylinder body 50.

[0066] The structure of the outer cylinder 50 is composed of the outer cylinder 50 cover plate 51 and the outer cylinder body 52, which ensures the stability and sealing of the damping device 1. The inner wall of the outer cylinder body 52 is provided with a recess engagement structure 521, which is precisely engaged with the convex engagement structure 111 on the outer periphery of the top cover 11. The firm connection between the inner cylinder 10 and the outer cylinder body 52 is achieved through this engagement mode, effectively preventing the inner cylinder 10 from loosening or displacement in a vibrating environment. The outer cylinder 50 cover plate 51 is arranged at the top of the outer cylinder body 52, which is used to seal the outer cylinder 50, not only providing good protection for the internal components, but also preventing the influence of external environmental factors on the damping device 1. This structure significantly enhances the overall structural strength and operational reliability of the damping device 1, while providing convenience for the installation and maintenance of the equipment.

[0067] In some embodiments, as shown in Figure 8 、 9 , 10. The outer wall of the outer cylinder 50 is provided with a lifting lug 53, which is used to increase the engagement force between the outer cylinder 50 and the concrete and to limit and fix the outer cylinder 50. Specifically, the side wall of the outer cylinder 50 is annularly provided with a limiting pin, and by adjusting the limiting pin, the outer cylinder 50 can be limited and fixed.

[0068] The outer wall of the outer cylinder 50 is provided with a lifting lug 53 to enhance the engagement force between the outer cylinder 50 and the concrete and to limit and fix the outer cylinder 50. Specifically, the side wall of the outer cylinder 50 is annularly provided with a plurality of limiting pins, and by adjusting the position of the limiting pins, the outer cylinder 50 can be stably limited and fixed to prevent it from sliding or tilting in the concrete. The setting of the lifting lug 53 not only effectively improves the fixing effect of the damping device 1 in the concrete environment, but also enhances the anti-vibration and overall stability of the outer cylinder 50 by providing additional mechanical support. This design ensures the long-term reliability of the damping device 1 after installation, while facilitating construction and maintenance, improving the adaptability and engineering application value of the device.

[0069] The present embodiment provides a floating slab track 2, as shown in Figure 11 . The floating slab track 2 comprises the above-mentioned damping device 1, steel rail 60, floating slab 70 and foundation 80; the outer cylinder 50 of the damping device 1 is embedded in the floating slab 70, and the inner cylinder 10 of the damping device 1 is accommodated in the outer cylinder 50; the steel rail 60 is symmetrically arranged on the floating slab 70, and the floating slab 70 is arranged on the foundation 80.

[0070] The floating slab track 2 provided by the embodiment realizes the efficient damping function of the steel rail 60 system floating slab track system by organically combining the damping device 1, the floating slab 70 and the foundation 80. The outer cylinder body 50 of the damping device 1 is embedded in the floating slab 70, ensuring the close integration with the structure of the floating slab 70 and providing stable support and protection. The inner cylinder body 10 is contained in the outer cylinder body 50, forming a closed working environment, so that the components of the damping device 1 can efficiently cooperate during the vibration of the floating slab track, and the vibration energy can be isolated and dissipated. The steel rail 60 is symmetrically arranged on the floating slab 70, ensuring the stability and safety of train operation, and the foundation 80 is located at the bottom of the floating slab 70, providing solid foundation support for the whole structure. This design not only optimizes the damping performance of the floating slab track 2 system, effectively reduces the influence of floating slab track vibration on the surrounding environment, but also improves the stability and durability of the whole system, meeting the green and low-noise operation requirements of urban steel rail traffic.

[0071] The damping working principle of the damping device 1 provided by the utility model

[0072] The damping device 1 provided by the utility model realizes efficient isolation, conversion and dissipation of the vibration energy of the floating slab track 2 through the synergistic effect of the inner and outer cylinder bodies 50, spring members 30, inertial mass components 40 and rigid friction damping sleeves 44. The inner cylinder body 10 of the device is telescopic along the first direction, and is tightly connected with the top cover 11 and the bottom cylinder 13 through the flexible protective sleeve 12, forming a closed telescopic shell, effectively adapting to the vibration displacement change and protecting the internal structure. The isolation pipe 20 divides the cavity of the inner cylinder body 10 into an annular cylindrical cavity and a cylindrical cavity, respectively accommodating the spring member 30 and the inertial mass component 40. The spring member 30 is located in the annular cylindrical cavity and provides elastic support by abutting against the top and bottom of the inner cylinder body 10 at both ends, while isolating the transmission of upper vibration to the lower part. The inertial mass component 40 in the cylindrical cavity converts the small linear vibration into large rotary motion of the inertial flywheel member 43 through the ball screw 41 mechanism, and absorbs and converts the vibration energy by using the inertial amplification effect.

[0073] The rigid friction damping sleeve 44 added in the inertial mass component 40 is tightly fitted with the inertial flywheel member 43, and dissipates vibration energy through friction during rotation, while the outer ring 442 is clamped with the isolation pipe 20 through the limiting groove 4421 and the limiting convex part 21, ensuring the stability and efficient energy dissipation of the component. The outer cylinder body 50 provides protection for the inner cylinder body 10 and its components, and enhances the engagement force with the concrete structure through the lifting lug 53, ensuring the firmness and limiting fixation of the whole device.

[0074] When the floating slab track vibrates, the vibration energy is transmitted to the spring member 30, the inerter assembly 40 and the rigid friction damping sleeve 44 in turn through the inner cylinder 10, the spring member 30 isolates part of the vibration energy, the inerter assembly 40 amplifies the inertia effect through mechanical transmission and converts the vibration energy, and the rigid friction damping sleeve 44 further dissipates the mechanical energy converted by the vibration, so as to finally reduce the influence of the vibration on the lower structure. Through the coordinated action of the series, the vibration damping device 1 significantly improves the vibration damping performance and structural stability of the floating slab track 2 system, and effectively solves the problems of insufficient low-frequency vibration isolation and energy dissipation.

[0075] Other variations or changes can be made on the basis of the foregoing description by those skilled in the art. Here, it is not necessary or possible to exhaust all the embodiments, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model patent claim.

Claims

1. A vibration damping device characterized by comprising: The damping device comprises: an inner cylinder body for telescoping in a first direction; an isolation pipe arranged inside the inner cylinder body and fixedly connected to the bottom of the inner cylinder body, for separating the inner cavity of the inner cylinder body into an annular cylindrical cavity and a cylindrical cavity; a spring member located in the annular cylindrical cavity and abutting against the top and bottom of the inner cylinder body at both ends, for supporting a floating slab track and isolating vibration; an inertial mass component located in the cylindrical cavity, fixedly connected to the top of the inner cylinder body and the top of the isolation pipe, for amplifying inertial effect to convert small linear vibration into large rotational motion and absorb vibration energy of the floating slab track into heat energy; an outer cylinder body for containing and fixing the inner cylinder body.

2. The vibration damping device according to claim 1, characterized by The inner cylinder body comprises a top cover, a flexible protective sleeve and a bottom cylinder; the upper and lower ends of the flexible protective sleeve are fastened to the edges of the top cover and the bottom cylinder respectively, forming a closed telescopic shell.

3. The vibration damping device according to claim 2, characterized by One end of the spring member abuts against the bottom of the bottom cylinder, and the other end is in compression abutment with the top cover.

4. The vibration damping device according to claim 2, characterized by The inertial mass component comprises a ball screw, a ball nut and an inertial flywheel member; the top of the ball screw is fixedly connected to the top cover, the ball nut is sleeved on the ball screw and connected and driven by the balls inside, the bottom of the ball nut is fixedly connected to the inertial flywheel member and can drive the inertial flywheel member to rotate around the shaft.

5. The vibration damping device according to claim 4, characterized by The inertial mass component further comprises a rigid friction damping sleeve, which is sleeved on the outer wall of the inertial flywheel member and closely adheres to the isolation pipe; The rigid friction damping sleeve comprises an inner ring, an outer ring and an elastic member, the inner ring closely adheres to the outer wall of the inertial flywheel member and can rotate relatively, a friction damping sheet is arranged between the inner ring and the inertial flywheel member, and the friction damping sheet is used to increase the friction between the inner ring and the outer wall of the inertial flywheel member; The outer ring closely adheres to the inner wall of the isolation pipe, the outer ring is provided with a limiting groove extending along the length direction, and the inner wall of the isolation pipe is provided with a limiting protrusion extending along the length direction and matching the shape of the limiting groove, the limiting groove and the limiting protrusion are engaged and do not rotate relatively; The inner ring and the outer ring are connected by the elastic member, and the elastic member can elastically bend and deform; the outer ring and the inner ring are rigid members and do not deform.

6. The vibration damping device according to claim 5, characterized by The inertial mass component further comprises a bearing member, a bearing seat and a connecting member; the inner ring of the bearing member is fixedly connected to the side wall of the ball nut, the outer ring of the bearing member is fixed in the bearing seat matching the shape, the bottom of the bearing seat is fixedly connected to the connecting member, the bearing seat, the connecting member and the outer diameter of the isolation pipe are the same, and the bottom of the connecting member is fixedly connected to the isolation pipe and seals the cylindrical cavity.

7. The vibration damping device according to claim 2, characterized by The outer periphery profile of the top cover is provided with a convex portion clamping structure for clamping and fixing the inner cylinder body.

8. The vibration damping device according to claim 7, characterized by The outer cylinder comprises an outer cylinder cover plate and an outer cylinder body; an inner wall of the outer cylinder body is provided with a recess clamping structure for clamping connection with the convex part clamping structure provided on the outer contour of the top cover; the outer cylinder cover plate is arranged on the top of the outer cylinder body for closing the outer cylinder.

9. The vibration damping device according to claim 1, characterized by An outer wall of the outer cylinder is provided with a lifting lug, which is used to increase the engagement force between the outer cylinder and the concrete and to limit and fix the outer cylinder.

10. A floating slab track, characterized by The floating slab track comprises the damping device of any one of claims 1-9, a steel rail, a floating slab and a foundation; the outer cylinder of the damping device is embedded in the floating slab, and the inner cylinder of the damping device is accommodated in the outer cylinder; the steel rail is symmetrically arranged on the floating slab, and the floating slab is arranged on the foundation.

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