Embedded floating slab vibration reduction track structure
By adopting an embedded floating plate vibration-absorbing track structure in rail transit, using prefabricated floating plate track bed modules and channel-type hinges, the rails are laid on the floating path bed and buried in the rail trough, solving the problems of low vibration damping performance, high noise and high rails in the prior art, achieving better vibration damping effect and operating safety.
Patent Information
- Application Number
- CN202420432058.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-03-06
AI Technical Summary
In existing rail transit, the vibration damping performance of embedded tracks is lower than that of floating plate beds. The noise generated by wheel rails in floating plate beds cannot be effectively suppressed, and the rails are higher than the surface of the track beds and are not conducive to passengers' escape, and traditional fasteners support lead to abnormal wear of rails and wheels.
The embedded floating plate vibration-absorbing track structure is adopted, and the prefabricated floating plate track bed module is connected to the channel-type hinge. The rail is laid on the floating track bed board, and the rail is buried in the rail groove using rail adjustment components and fillers to achieve continuous support.
This structure has the advantages of embedded tracks and floating plate tracks, which improves vibration damping effect, reduces wheel and rail noise, enhances continuous support of rails, improves wheel and rail relationships, and improves the operating safety and comfort of rail transit.
Smart Images
Figure CN222648474U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rail transportation, in particular to an embedded floating plate vibration reduction track structure. Background Art
[0002] The track structures commonly used in rail transit have the following forms: the traditional track structure, in which the rails and sleepers (or integral roadbed) are connected by fasteners, the support and fixation of the rails are discrete, and the rails are completely exposed to the air; the embedded track structure adopts a continuous fixation and support method, and its basic approach is: use an elastomer (such as polyurethane material) to fix the rails in the groove of the reinforced concrete slab integral roadbed, and the entire rail is almost completely buried in the elastomer; the floating plate roadbed (including vibration-damping pad floating plate, steel spring floating plate, rubber spring floating plate, etc.) is to elastically support the traditional integral roadbed on the base, thereby reducing the vibration caused by the train and reducing the vibration impact on surrounding buildings.
[0003] The above track structures commonly used in rail transit have the following defects: the vibration reduction performance of the embedded track is lower than that of the floating slab track; although the floating slab track effectively reduces the vibration caused by the train, since its rails are completely exposed to the air, the noise generated by the wheels and rails cannot be effectively suppressed; and since the rails in the floating slab track and the traditional track structure are higher than the track surface, it is not convenient for passengers to escape when encountering danger; in addition, the floating slab track uses traditional fasteners to support the rails, resulting in discontinuous support for the rails and periodic changes in stiffness, which can easily cause abnormal wear of the rails and wheels. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] The utility model provides an embedded floating plate vibration-damping track structure, which solves the problems that the vibration-damping performance of the embedded track is lower than that of the floating plate track bed, the noise generated by the wheel and rail in the floating plate track bed cannot be effectively suppressed, the periodic change of stiffness caused by the equally spaced fasteners leads to abnormal wear of the rails and wheels, and the rails are higher than the track bed surface, making it inconvenient for passengers to escape in distress.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an embedded floating plate vibration-damping track structure, comprising two steel rails, a plurality of groups of prefabricated floating plate ballast modules and a plurality of channel-type hinges, wherein two adjacent groups of the prefabricated floating plate ballast modules are connected by means of channel-type hinges, and the two steel rails are both laid and installed above the plurality of groups of prefabricated floating plate ballast modules.
[0008] The prefabricated floating slab track bed module comprises a floating track bed plate, two pads, a plurality of track adjustment components, channel-type hinges and fillers. Two sections of rail grooves are formed on the top of the floating track bed plate. The two pads are respectively padded on the inner bottoms of the two sections of rail grooves. Each of the rails passes through a section of the rail groove and is placed on the pads in the rail groove. At least one group of track adjustment components is arranged on the opposite sides of each rail. The track adjustment components adjust and fix the rails. The gaps in the two sections of the rail grooves are filled with fillers, and the fillers can be made of polyurethane material.
[0009] Among them, the track adjusting assembly includes a track adjusting block A, a track adjusting block B and a pressure plate. The side of the track adjusting block A facing the rail is in contact with the waist of the rail, and the side of the track adjusting block A facing away from the rail is in contact with the opposite side of the track adjusting block B. One end of the pressure plate is fixed above the floating track bed plate, and the other end of the pressure plate presses and fixes the track adjusting block B.
[0010] Preferably, the track adjustment assembly further comprises a height adjustment gasket, which is arranged between the track adjustment block B and the pressure plate, and fills the gap between the track adjustment block B and the pressure plate.
[0011] It is further preferred that the shape of the track adjusting block B is set to be a wedge shape, the side of the track adjusting block A facing the rail matches the waist shape of the rail, the side of the track adjusting block A facing the rail adjusting block B is set to a slope matching the track adjusting block B, the track adjusting block A can be made of polyurethane or rubber material, and the track adjusting block B can be made of rigid material.
[0012] It is further preferred that the floating ballast plate can be a vibration-damping pad ballast plate, a steel spring floating plate or a rubber spring floating plate.
[0013] It is further preferred that the channel type hinge is configured in a "U" shape, the channel type hinge respectively passes through the aligned rail grooves on two adjacent groups of floating track slabs, and the channel type hinge is fixed in the rail groove by bolts.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides an embedded floating plate vibration reduction track structure, which has the following beneficial effects:
[0016] 1. In the utility model, the rails are buried in the rail grooves by using the rail adjustment assembly and the filler, and the floating ballast plate is used to support and install the rails, so that the embedded floating plate vibration reduction track structure has the advantages of both the embedded track and the floating plate track, which can not only ensure the vibration reduction effect but also effectively reduce the wheel-rail noise and the noise inside the car. For the bridge deck line and the ground line, the noise radiated by the rail transit to the surrounding area is effectively reduced.
[0017] 2. In the utility model, the rails are almost completely buried in the rail grooves on the floating ballast plate, so that the height of the track structure can be effectively reduced. On the one hand, the limit requirements can be met, and on the other hand, the thickness of the ballast plate can be increased compared with the original floating plate track, thereby improving the vibration quality and the vibration reduction effect.
[0018] 3. In the utility model, the rails are almost completely buried in the rail grooves on the floating ballast plate, so that the surface of the floating ballast plate is relatively flat, which is convenient for the escape and evacuation of passengers in dangerous situations.
[0019] 4. In the utility model, the rails can be embedded in the rail grooves for support by utilizing the rail adjustment assembly and the filler, so that the discrete support of the rails in the original floating slab roadbed can be changed to continuous support, which greatly improves the wheel-rail relationship. In addition, the continuous support of the rails in the embedded track structure provides more uniform spatial elastic constraints, uniform stiffness, eliminates secondary bending, reduces corrugation, improves dynamic smoothness, and thus improves the safety and comfort of rail transit operation.
[0020] 5. In the present invention, adjacent floating ballast plates are connected by channel-type hinges, so that the integrity of the ballast is improved and the deformation problem between ballast plates is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure of the embedded floating plate vibration reduction track according to the implementation scheme;
[0022] Figure 2 It is a schematic diagram of the structure of the floating track bed plate connected by the channel type hinge according to the implementation scheme;
[0023] Figure 3 It is a schematic structural diagram of a channel hinge according to an embodiment.
[0024] In the figure: 10, floating track bed plate; 20, rail; 30, pad; 40, track adjustment assembly; 41, track adjustment block A; 42, track adjustment block B; 43, pressure plate; 44, height adjustment gasket; 50, channel type hinge; 60, filler. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figure 1An embedded floating plate vibration reduction track structure may include two rails 20, multiple groups of prefabricated floating plate roadbed modules and multiple channel-type hinges 50. Two adjacent groups of prefabricated floating plate roadbed modules are connected by channel-type hinges 50 to form a continuous roadbed. The two rails 20 are laid and installed above the multiple groups of prefabricated floating plate roadbed modules, so that the two rails 20 cooperate with the continuous roadbed to form an embedded floating plate vibration reduction track structure.
[0027] In this embodiment, the prefabricated floating plate ballast module may include a floating ballast plate 10, two pads 30, multiple groups of track adjustment components 40 and fillers 60. The floating ballast plate 10 may adopt the existing vibration-damping pad ballast plate, steel spring floating plate or rubber spring floating plate in the prior art, and two sections of rail grooves are pre-opened on the upper surface of the floating ballast plate 10 for placing and installing the rails 20. Pads 30 are laid on the inner bottom of the two sections of the rail grooves, and the pads 30 are used to support the rails 20 passing through the rail grooves. At least one group of track adjustment components 40 is arranged on the opposite sides of each rail 20. In the figure, multiple groups of track adjustment components 40 are symmetrically installed on the opposite sides of each rail 20, and the track adjustment components 40 are used to adjust and fix the rails 20. After the rails 20 are adjusted and fixed by the track adjustment components 40, fillers 60 are injected into the gaps in the two sections of the rail grooves. The fillers 60 may be made of a filler such as polyurethane.
[0028] In this embodiment, the track adjustment assembly 40 may include a track adjustment block A41, a track adjustment block B42, a pressure plate 43, and a height adjustment gasket 44. The track adjustment block B42 may be made of a wedge-shaped block structure made of a rigid material such as steel; the track adjustment block A41 may be made of an elastomer such as polyurethane or rubber, and the side of the track adjustment block A41 facing the rail 20 matches the waist shape of the rail 20, and the side of the track adjustment block A41 facing the track adjustment block B42 is set as an inclined surface matching the track adjustment block B42. When installing the track adjustment assembly 40, the track adjustment block A41 may be placed on the side of the rail 20 in contact with its waist, and then the side of the track adjustment block A41 facing away from the rail 20 is placed in contact with the opposite side of the track adjustment block B42, and finally one end of the pressure plate 43 may be fixed on the floating track bed plate 10 by bolts, and the other end of the pressure plate 43 may be pressed and fixed on the track adjustment block B42. When there is a gap between the pressure plate 43 and the track adjusting block B42, a height adjustment gasket 44 can be placed between the track adjusting block B42 and the pressure plate 43 to fill the gap between the two, and then the pressure plate 43 can be fixed, and the pressure plate 43 can be used to press the height adjustment gasket 44 and the track adjusting block B42, and the track adjusting block A41 can limit the rail 20.
[0029] See also Figure 2 and Figure 3The channel hinge 50 can be formed into a "U" shape by bending a steel plate with a plurality of holes pre-opened, and triangular reinforcing ribs can be welded on its inner wall to help improve its strength. When connecting the floating track bed 10, the channel hinge 50 can be respectively passed through the aligned rail grooves on two adjacent groups of floating track bed plates 10, and the channel hinge 50 can be fixed in the rail groove by bolts. The channel hinge can connect two adjacent floating track bed plates 10 to keep the rigidity of the line continuous, so that when the train travels from one track bed plate to another, the transition is smooth, avoiding excessive dynamic height changes of the two track bed plates and avoiding up and down movement; and the channel hinge 50 can ensure that the filler 60 is continuously injected into the rail groove without leakage at the gap between the track bed plates.
[0030] During the construction and installation of the embedded floating plate vibration-damping track structure, all the floating ballast plates 10 are first installed in place at the predetermined positions, and the front and rear floating ballast plates 10 are connected and stabilized by the channel-type hinges 50 between the floating ballast plates 10; then, a pad 30 is laid in the rail groove on each section of the floating ballast plate 10, and the rail is hoisted into the rail groove; then, a plurality of sets of rail adjustment components 40 are placed and installed in each section of the rail groove according to the required installation interval, and the rail adjustment components 40 on the left and right sides of the rail 20 are used to fine-tune the lateral position of the rail 20; after the fine-tuning of the rail 20 is completed, a filling material 60 is injected into the gap of the rail groove, and the construction and installation are completed after the filling material 60 is solidified.
[0031] This type of embedded floating plate vibration-damping track structure eliminates the traditional point-type support fasteners on the integral track bed, adopts a continuous support track system, optimizes the track structure, and greatly improves the wheel-rail relationship; it can greatly reduce maintenance work in the future operation and maintenance stage. In addition, it increases the thickness of the floating track bed to improve the vibration-damping quality of the vibration-damping track bed, balances the impact energy of the dynamic load of the train on the tunnel structure, and slows down the sinking of the tunnel structure. At the same time, the new system can balance the local tunnel sinking, maintain the track geometry at any time, and ensure the safety of subway driving. The continuous support of the rails of the embedded floating plate vibration-damping track structure provides a more uniform spatial elastic constraint, uniform stiffness, eliminates secondary bending, reduces corrugation, and improves dynamic smoothness; and the increase in the longitudinal resistance of the line has a better inhibitory effect on rail creep and better adaptability to large slope lines; the continuous lateral constraint of the line also makes it better adaptable to small radius curves.
[0032] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. An embedded floating plate vibration reduction track structure, comprising two rails (20), characterized in that: It also includes a plurality of groups of prefabricated floating slab ballast modules and a plurality of channel-type hinges (50), wherein two adjacent groups of the prefabricated floating slab ballast modules are connected by the channel-type hinges (50), and the two rails (20) are both laid and installed above the plurality of groups of prefabricated floating slab ballast modules. The prefabricated floating slab ballast module comprises a floating ballast plate (10), two pads (30), a plurality of rail adjustment components (40) and a filler (60); two sections of rail grooves are formed on the top of the floating ballast plate (10); the two pads (30) are respectively arranged on the inner bottoms of the two sections of rail grooves; each of the rails (20) passes through a section of the rail groove and is placed on the pads (30) in the rail groove; at least one group of rail adjustment components (40) is arranged on opposite sides of each of the rails (20); the rail adjustment components (40) adjust and fix the rails (20); and the gaps in the two sections of the rail grooves are filled with fillers (60); The track adjustment assembly (40) comprises a track adjustment block A (41), a track adjustment block B (42) and a pressure plate (43), wherein the track adjustment block A (41) is in contact with the waist of the rail (20) on one side thereof, and the track adjustment block A (41) is in contact with the opposite side of the rail (20) on the other side thereof, and one end of the pressure plate (43) is fixed above the floating track bed plate (10), and the other end of the pressure plate (43) applies pressure to fix the track adjustment block B (42).
2. The embedded floating plate vibration reduction track structure according to claim 1, characterized in that: The track adjustment assembly (40) further comprises a height adjustment gasket (44), which is arranged between the track adjustment block B (42) and the pressing plate (43), and the height adjustment gasket (44) fills the gap between the track adjustment block B (42) and the pressing plate (43).
3. The embedded floating plate vibration reduction track structure according to claim 1 or 2, characterized in that: The shape of the track adjusting block B (42) is set to be wedge-shaped, the side of the track adjusting block A (41) facing the rail (20) is matched with the waist shape of the rail (20), and the side of the track adjusting block A (41) facing the rail adjusting block B (42) is set to be an inclined surface matched with the track adjusting block B (42).
4. The embedded floating plate vibration reduction track structure according to claim 3, characterized in that: The track adjusting block A (41) is made of polyurethane or rubber.
5. The embedded floating plate vibration reduction track structure according to claim 4, characterized in that: The track adjustment block B (42) is made of a rigid material.
6. The embedded floating plate vibration reduction track structure according to claim 1, characterized in that: The filler (60) is configured as polyurethane filler.
7. The embedded floating plate vibration reduction track structure according to claim 1, characterized in that: The floating ballast plate (10) is configured as a vibration-damping pad ballast plate, a steel spring floating plate or a rubber spring floating plate.
8. The embedded floating plate vibration reduction track structure according to claim 1, characterized in that: The channel type hinge (50) is configured in a "U" shape, and the channel type hinge (50) respectively passes through the aligned rail grooves on two adjacent groups of floating track bed plates (10), and the channel type hinge (50) is fixed in the rail groove by bolts.