Floating slab ballast bed capable of preventing spring from being broken
By setting up a break-off spring floating plate bed with auxiliary multi-functional vibration isolator below the floating plate, the problems of rust in and out of the barrel in traditional channels and the break-off of the steel spring isolator in traditional channels are solved, and good vibration isolation effect and system reliability and safety are achieved.
Patent Information
- Application Number
- CN202422156937.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The traditional built-in steel spring floating plate bed has problems such as corrosion or damage to the outer cylinder and breaking the steel spring isolator, which leads to reduced vibration isolation effect and difficulty in maintenance, which may cause greater losses.
A floating plate bed with anti-break spring is designed, which provides elastic support by setting an auxiliary multi-functional vibration isolator under the floating plate, sharing the load of the steel spring vibration isolator, avoiding the spring breakage, and providing alternative support when the steel spring vibration isolator fails.
Effectively isolate the vibration generated by rail vehicle operation, improve the service life of steel spring vibration isolators, extend the service life and safety of the track bed system, and provide post-maintenance solutions for the built-in steel spring floating plate track bed.
Smart Images
Figure CN223017327U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of vibration and noise control of rail transportation, and in particular relates to a floating plate track bed system for isolating wheel-rail vibration generated during the operation of rail vehicles. Background Art
[0002] With the development of society and the advancement of science and technology, large and medium-sized cities are paying more and more attention to the construction of urban underground railways. However, vibration and noise are inevitably generated in rail transit operations. Vibration and noise not only affect the health of residents, but also have adverse effects on the comfort and structural safety of surrounding buildings. In order to solve the environmental protection problems in sensitive areas, some technicians have designed floating plate roadbed vibration isolation technology, including rubber floating plate roadbed and built-in steel spring floating plate roadbed, etc. Among them, the built-in steel spring floating plate roadbed vibration isolation technology is also the only special grade vibration isolation measure in this field. The traditional built-in steel spring floating plate roadbed includes a floating plate and an elastic vibration isolation device, and the elastic vibration isolation device includes an outer cylinder, a height adjustment pad and a steel spring vibration isolator. The outer cylinder is integrally fixed in the floating plate, and the steel spring vibration isolator supports the floating plate to separate it from the foundation surface through the height adjustment pad and the support block fixedly arranged on the inner wall of the outer cylinder. However, in practice, it has been found that this type of built-in steel spring floating plate ballast has some problems, mainly including: (1) The outer tube is a steel metal component, which is fixedly connected to the floating plate. Once the key components such as the support block in the outer tube are rusted or damaged, it can no longer work normally with the steel spring isolator to achieve vibration isolation, and there is no repair method to date; (2) During operation, it was found that due to local overload and other reasons, the steel spring isolator in the built-in steel spring floating plate ballast has the problem of broken springs. Since the steel spring isolator is built into the floating plate, it cannot be directly discovered through daily inspections from above the floating plate. If the hidden dangers cannot be eliminated in time, it may cause greater losses and problems. Utility Model Content
[0003] The utility model aims to solve the above problems and provide a spring-breaking-proof floating slab track bed which can solve the problems of rust or damage of the outer tube and spring breaking of the steel spring isolator.
[0004] The utility model of anti-spring breakage floating plate track bed is realized as follows, including a floating plate and an elastic vibration isolation device, the elastic vibration isolation device includes an outer cylinder, the outer cylinder is integrally fixedly arranged in the floating plate, the elastic vibration isolation device also includes an auxiliary multifunctional vibration isolator, limiting holes are correspondingly arranged between the auxiliary multifunctional vibration isolator and the bottom plate of the outer cylinder, and the auxiliary multifunctional vibration isolator is connected to each other through limiting pins or fasteners and the limiting holes, and the auxiliary multifunctional vibration isolator is symmetrically arranged between the floating plate and the foundation below the local outer cylinder and on both sides of the outer cylinder.
[0005] The elastic vibration isolation device may further include a height-adjusting cushion plate and a steel spring vibration isolator. The outer cylinder is integrally and fixedly arranged in the floating slab. The steel spring vibration isolator cooperates with the outer cylinder through the height-adjusting cushion plate to support the floating slab to be separated from the foundation surface. The thickness of the auxiliary multi-functional vibration isolator is less than the height between the floating slab and the foundation when the steel spring vibration isolator bears the ultimate load.
[0006] Preferably, auxiliary multi-functional vibration isolators are arranged between the floating slab and the foundation under the local outer cylinder and on both sides of the outer cylinder along the extending direction of the rail. Of course, in order to improve the stability and bearing capacity, auxiliary multi-functional vibration isolators can also be arranged between the floating slab and the foundation under the local outer cylinder and on both sides of the outer cylinder along the transverse direction of the rail at the same time.
[0007] The first type of typical structural form of the typical auxiliary multi-functional vibration isolator in the anti-breaking spring floating slab track bed of the present utility model includes: the auxiliary multi-functional vibration isolator is an elastic rubber cushion block or an elastic polyurethane cushion block; in order to improve the bearing capacity, a reinforcing layer can also be provided in the elastic rubber cushion block, and the reinforcing layer includes a reinforcing plate, a reinforcing mesh or a reinforcing fiber layer.
[0008] The second type of typical structural form of the typical auxiliary multi-functional vibration isolator in the anti-breaking spring floating slab track bed of the present utility model includes: the auxiliary multi-functional vibration isolator includes an integrally arranged top plate and an elastic body; or, a bottom plate is further included, the elastic body is located between the top plate and the bottom plate, and the top plate, the bottom plate and the elastic body are integrally arranged. Of course, in order to improve the bearing capacity, when the elastic body is a rubber elastic body, a reinforcing layer can also be provided in the rubber elastic body, and the reinforcing layer includes a reinforcing plate, a reinforcing mesh or a reinforcing fiber layer.
[0009] In addition, the anti-breaking spring floating slab track bed of the present utility model may further include a height-adjusting gasket. The height-adjusting gasket is arranged between the auxiliary multi-functional vibration isolator and the floating slab. The height-adjusting gasket and the auxiliary multi-functional vibration isolator are correspondingly provided with limit holes, and the height-adjusting gasket and the auxiliary multi-functional vibration isolator are connected by matching a limit pin or a fastener with the limit holes.
[0010] The anti - breaking spring floating slab track bed of the present utility model constructs an elastic vibration isolation pad track bed by setting an auxiliary multi - functional vibration isolator under the floating slab, which can effectively isolate the vibration generated during the operation of rail vehicles and has a good vibration isolation effect. The second important beneficial technical effect of the present utility model is to provide a reliable prevention and compensation solution for solving the problem of spring breakage of the steel spring vibration isolator. On the one hand, when the steel spring vibration isolator is overloaded, the auxiliary multi - functional vibration isolator can temporarily provide elastic support for the floating slab, share the load of the steel spring vibration isolator, avoid the steel spring from breaking due to over - load, improve the service life of the steel spring vibration isolator, and further improve the service life and safety of the track bed system. On the other hand, when the steel spring vibration isolator has a spring breakage problem and loses its original elastic support ability, the auxiliary multi - functional vibration isolator can replace the steel spring vibration isolator to provide elastic support for the floating slab, avoiding abnormal loading of the surrounding steel spring vibration isolators caused by the lack of local elastic support and resulting in more extensive damage and the associated operation risks. The third important beneficial technical effect of the present utility model is to provide a post - maintenance solution for the built - in steel spring floating slab track bed. Once it is found that the outer cylinder is rusted or damaged, the auxiliary multi - functional vibration isolator can be arranged in advance at the position where the corresponding outer cylinder is located to construct the anti - breaking spring floating slab track bed of the present utility model. In summary, the anti - breaking spring floating slab track bed of the present utility model can be widely applied to urban subway projects, and can be used for both new line construction and old line renovation. Brief Description of the Drawings
[0011] Figure 1 It is one of the structural schematic diagrams of the anti - breaking spring floating slab track bed of the present utility model.
[0012] Figure 2 is Figure 1 the sectional view taken along the A - A direction of
[0013] Figure 3 It is the second structural schematic diagram of the anti - breaking spring floating slab track bed of the present utility model.
[0014] Figure 4 It is the third structural schematic diagram of the anti - breaking spring floating slab track bed of the present utility model.
[0015] Figure 5 It is the fourth structural schematic diagram of the anti - breaking spring floating slab track bed of the present utility model.
[0016] Figure 6 is Figure 5 the enlarged view of part B of
[0017] Figure 7 It is the fifth structural schematic diagram of the anti - breaking spring floating slab track bed of the present utility model.
[0018] Figure 8 is Figure 7Schematic working diagram of the anti-breaking spring floating slab track bed of the present utility model as shown
[0019] Figure 9 Sixth structural schematic diagram of the anti-breaking spring floating slab track bed of the present utility model
[0020] Figure 10 Seventh structural schematic diagram of the anti-breaking spring floating slab track bed of the present utility model
[0021] Figure 11 is Figure 10 Schematic working diagram of the anti-breaking spring floating slab track bed of the present utility model as shown
[0022] Figure 12 Eighth structural schematic diagram of the anti-breaking spring floating slab track bed of the present utility model Specific implementation manner
[0023] Embodiment 1
[0024] As Figure 1 and Figure 2 shown, the anti-breaking spring floating slab track bed of the present utility model includes a floating slab 2 and an elastic vibration isolation device. The elastic vibration isolation device includes an outer cylinder 1, and the outer cylinder 1 is integrally and fixedly arranged in the floating slab 2. The elastic vibration isolation device further includes an auxiliary multi-functional vibration isolator 3, and the auxiliary multi-functional vibration isolator 3 is specifically an elastic rubber cushion block. Corresponding limit holes are arranged between the auxiliary multi-functional vibration isolator 3 and the bottom plate of the outer cylinder 1, and they are connected to each other through a limit pin 5 in cooperation with the limit holes. The auxiliary multi-functional vibration isolators 3 are symmetrically arranged between the floating slab 2 and the foundation 1 below the local outer cylinder 1 and on both sides of the outer cylinder 1. Specifically, when arranging the auxiliary multi-functional vibration isolators 3, the auxiliary multi-functional vibration isolators are arranged between the floating slab and the foundation below the local outer cylinder and on both sides of the outer cylinder along the extending direction of the rail (not specifically shown in the figure).
[0025] During application, after lifting the floating slab, the auxiliary multi-functional vibration isolator can be placed between the floating slab and the foundation through the opening in the middle of the outer cylinder. After placing it in position, lower the floating slab, and then use the limit pin to connect the auxiliary multi-functional vibration isolator to the outer cylinder, simultaneously locking the relative position between the auxiliary multi-functional vibration isolator and the floating slab, thus forming the anti-breaking spring floating slab track bed of the present utility model; during maintenance, lift the floating slab, remove the limit pin, and then take out the auxiliary multi-functional vibration isolator through the opening in the middle of the outer cylinder for replacement, which is very convenient.
[0026] The anti-breaking spring floating slab track bed of the present utility model constructs an elastic vibration isolation pad track bed by arranging an auxiliary multi-functional vibration isolator below the floating slab, which can effectively isolate the vibration generated during the operation of rail vehicles and has a good vibration isolation effect. Another important beneficial technical effect of the present utility model is to provide a later maintenance solution for the built-in steel spring floating slab track bed. Once it is found that the outer cylinder is rusted or damaged, the auxiliary multi-functional vibration isolator can be arranged in advance at the position where the corresponding outer cylinder is located to construct the anti-breaking spring floating slab track bed of the present utility model.
[0027] In summary, the anti-breaking spring floating slab track bed of the present utility model can be widely applied to urban subway projects, and can be used for both new line construction and old line renovation.
[0028] It should be noted that in addition to the elastic rubber cushion blocks mentioned above, the auxiliary multi-functional vibration isolator can also be other forms of elastic vibration isolators such as elastic polyurethane cushion blocks, which can also achieve similar technical effects; in addition, in this example, the auxiliary multi-functional vibration isolator is arranged between the floating slab and the foundation below the local outer cylinder and on both sides of the outer cylinder along the extension direction of the rail (not specifically shown in the figure). That is, each outer cylinder corresponds to two auxiliary multi-functional vibration isolators. In actual application, in order to improve stability and load-bearing capacity, as Figure 3 shown in the figure, the auxiliary multi-functional vibration isolator 3 can also be arranged between the floating slab 2 and the foundation 4 below the local outer cylinder 1 and on both sides of the outer cylinder 1 along the transverse direction of the rail. That is, each outer cylinder 1 corresponds to four auxiliary multi-functional vibration isolators 3, which can also achieve good effects. From the above technical principles, the contour shape, arrangement position and quantity of the auxiliary multi-functional vibration isolator can be specifically designed according to engineering needs. These are all simple changes based on the technical principles described in this example and are within the protection scope required by the present utility model.
[0029] Embodiment 2
[0030] As Figure 4 shown, the difference between the anti-breaking spring floating slab track bed of the present utility model and Embodiment 1 is that it further includes a height-adjusting gasket 7. The height-adjusting gasket 7 is arranged between the auxiliary multi-functional vibration isolator 3 and the floating slab 2. The height-adjusting gasket 7 and the outer cylinder 1 and the auxiliary multi-functional vibration isolator 3 are correspondingly provided with limit holes, and the height-adjusting gasket 7 is connected to the auxiliary multi-functional vibration isolator 3 by matching the limit pins 5 with the limit holes; in addition, a reinforcing layer 6 is provided in the elastic rubber cushion block constituting the auxiliary multi-functional vibration isolator 3, and the reinforcing layer 6 is specifically a reinforcing plate.
[0031] Compared with the first embodiment, in this example, due to the addition of the height-adjusting shim, it is more convenient and rapid to adjust the height and levelness of the floating slab. In addition, since a reinforcing layer is provided in the elastic rubber cushion block, the performance of the auxiliary multi-functional vibration isolator can be better optimized, which is beneficial to improving the vibration isolation effect, optimizing the load-bearing capacity, and prolonging the service life of the auxiliary multi-functional vibration isolator.
[0032] Based on the technical principle of this example, in addition to being a reinforcing plate, the reinforcing layer can also be other reinforcing structures such as a reinforcing mesh or a reinforcing fiber layer, which can also achieve good technical effects and are all within the protection scope required by the present utility model.
[0033] Embodiment Three
[0034] As Figure 5 and Figure 6 shown in the floating slab track bed with anti-breaking spring of the present utility model, the difference from the first embodiment is that the elastic vibration isolation device may further include a height-adjusting cushion plate 9 and a steel spring vibration isolator 8. The outer cylinder 1 is integrally and fixedly arranged in the floating slab 2. The steel spring vibration isolator 8 cooperates with the outer cylinder 1 through the height-adjusting cushion plate 9 to support the floating slab 2 to be separated from the surface of the foundation 4. The thickness of the auxiliary multi-functional vibration isolator 3 is less than the height between the floating slab 2 and the foundation 4 when the steel spring vibration isolator 8 bears the ultimate load.
[0035] Compared with the first embodiment, the important beneficial technical effect of the technical solution in this example is that it provides a reliable prevention and compensation solution for solving the problem of spring breakage of the steel spring vibration isolator. On the one hand, when the steel spring vibration isolator is overloaded, the auxiliary multi-functional vibration isolator can temporarily provide elastic support for the floating slab, share the load of the steel spring vibration isolator, avoid the steel spring from breaking due to overloading, improve the service life of the steel spring vibration isolator, and thus improve the service life and safety of the track bed system. On the other hand, when the steel spring vibration isolator has a spring breakage problem and loses its original elastic support ability, the auxiliary multi-functional vibration isolator can replace the steel spring vibration isolator to provide elastic support for the floating slab, avoid abnormal loading of the surrounding steel spring vibration isolators caused by the lack of local elastic support, resulting in more extensive damage and the associated operation risks, and is safer and more reliable.
[0036] According to the technical principle of this example, the utility model technology can be applied to the construction of new lines. When constructing new lines, a complete anti-breaking spring floating slab track bed of the utility model can be built. In addition, the utility model technology can also be applied to the transformation of old lines. When it is found that the steel spring isolator has a broken spring, an auxiliary multifunctional isolator can be added to the broken spring steel spring isolator and the elastic isolator device around it to form the anti-breaking spring floating slab track bed of the utility model to ensure operation safety. In addition, during the operation process, when the outer cylinder is rusted or damaged and can no longer cooperate with the steel spring isolator for the lifting support of the floating slab, the auxiliary multifunctional isolator can be used to replace the steel spring isolator to realize the elastic support of the floating slab, forming the anti-breaking spring floating slab track bed of the utility model to ensure the normal use of the floating slab track bed system.
[0037] Embodiment 4
[0038] As Figure 7 shown in the anti-breaking spring floating slab track bed of the utility model, the difference from Embodiment 3 is that the auxiliary multifunctional isolator includes an integrally arranged top plate 10 and an elastic body 11. Among them, the top plate 10 is made of a steel plate, and the elastic body 11 is made of an elastic rubber material, and the two are vulcanized and fixedly connected.
[0039] Compared with Embodiment 3, in the auxiliary multifunctional isolator described in this example, since a top plate is added to the surface of the elastic body, it can effectively prevent the elastic body from being stabbed or scratched due to the uneven bottom surface of the floating slab, which is beneficial to improving the service life of the auxiliary multifunctional isolator. In addition, since the top plate is made of a steel plate, the limit holes on the steel plate can also be set as threaded holes, and the outer cylinder is connected to the auxiliary multifunctional isolator by using threaded fasteners, which can also achieve good technical effects. Here, only a textual description is given, and it is also within the protection scope required by the utility model.
[0040] During the application process, as Figure 8 shown in, when the steel spring isolator has a broken spring, a height-adjusting gasket 7 is arranged between the top plate 10 of the auxiliary multifunctional isolator and the floating slab 2, and the floating slab 2 is adjusted in height and leveled, so that the auxiliary multifunctional isolator can be used to replace the steel spring isolator to provide elastic support for the floating slab, which is very convenient.
[0041] Embodiment 5
[0042] As Figure 9 shown in the anti-breaking spring floating slab track bed of the utility model, the difference from Embodiment 4 is that a reinforcing layer 6 is provided in the elastic body 11 of the auxiliary multifunctional isolator, and the reinforcing layer 6 is specifically a reinforcing mesh made of nylon material.
[0043] Compared with the fourth embodiment, since a reinforcing layer is added to the rubber elastomer of the auxiliary multi-functional vibration isolator, the reinforcing net made of nylon material can effectively improve the local strength of the rubber elastomer, prevent the elastomer from being stabbed or scratched, and is beneficial to improving the service life of the auxiliary multi-functional vibration isolator.
[0044] Embodiment Six
[0045] As Figure 10 shown in the anti-breaking spring floating slab track bed of the present utility model, the difference from the fourth embodiment is that the auxiliary multi-functional vibration isolator further includes a bottom plate 12, and the bottom plate 12 is also made of steel plate. The elastomer 11 is located between the top plate 10 and the bottom plate 12, and the top plate 10, the bottom plate 12 and the elastomer 11 made of rubber material are integrally provided by vulcanization process.
[0046] Compared with the fourth embodiment, since a bottom plate is added to the auxiliary multi-functional vibration isolator, it can effectively prevent the elastomer from being stabbed or scratched by the unevenness of the foundation, which is beneficial to improving the service life of the auxiliary multi-functional vibration isolator.
[0047] During the application process, as Figure 11 shown in, when a spring break occurs in the steel spring vibration isolator, a shim 7 is provided between the top plate 10 of the auxiliary multi-functional vibration isolator and the floating slab 2, and the floating slab 2 can be adjusted in height and leveled to realize using the auxiliary multi-functional vibration isolator to replace the steel spring vibration isolator to provide elastic support for the floating slab, which is very convenient.
[0048] Embodiment Seven
[0049] As Figure 12 shown in the anti-breaking spring floating slab track bed of the present utility model, the difference from the sixth embodiment is that a reinforcing layer 6 is provided in the rubber elastomer constituting the elastomer 11, and the reinforcing layer 6 is composed of a reinforcing plate made of steel plate.
[0050] Compared with the sixth embodiment, the greatest advantage of the technical solution described in this example is that the top plate, the bottom plate and the reinforcing plate of the auxiliary multi-functional vibration isolator cooperate with the rubber elastomer to form a metal-rubber composite vibration isolation structure, which is beneficial to optimizing the bearing capacity of the auxiliary multi-functional vibration isolator and also convenient for optimizing the lateral stiffness of the auxiliary multi-functional vibration isolator.
[0051] It should be noted that in this example, only one layer of reinforcing plate is provided in the elastomer. In actual application, two layers or even more layers can also be provided according to engineering needs. Design according to engineering needs, and good technical effects can also be achieved, which are all within the protection scope required by the present utility model.
Claims
1. A spring-break-proof floating plate track bed, comprising a floating plate and an elastic vibration isolation device, wherein the elastic vibration isolation device comprises an outer cylinder, which is integrally fixedly arranged in the floating plate, and is characterized in that The elastic vibration isolation device also includes an auxiliary multifunctional vibration isolator, and limiting holes are correspondingly arranged between the auxiliary multifunctional vibration isolator and the bottom plate of the outer cylinder and are connected to each other through limiting pins or fasteners that cooperate with the limiting holes. The auxiliary multifunctional vibration isolator is symmetrically arranged between the floating plates and the foundation below the local outer cylinder and on both sides of the outer cylinder.
2. The anti-spring break floating plate track bed according to claim 1 is characterized in that The elastic vibration isolation device also includes a height-adjustable pad and a steel spring vibration isolator. The steel spring vibration isolator cooperates with the outer cylinder to support the floating plate to separate it from the foundation surface through the height-adjustable pad. The thickness of the auxiliary multifunctional vibration isolator is less than the height between the floating plate and the foundation when the steel spring vibration isolator is subjected to the ultimate load.
3. The anti-spring-breakage floating slab track bed according to claim 1 is characterized in that Auxiliary multifunctional vibration isolators are arranged below the local outer tube and between the floating plates and the foundation on both sides of the outer tube along the extension direction of the rails.
4. The anti-spring break floating plate track bed according to claim 3 is characterized in that Auxiliary multifunctional vibration isolators are arranged simultaneously below the local outer tube and between the floating plates and the foundation on both sides of the outer tube along the transverse direction of the rails.
5. The anti-spring break floating slab track bed according to claim 1 is characterized in that The auxiliary multifunctional vibration isolator is an elastic rubber pad or an elastic polyurethane pad.
6. The anti-spring break floating slab track bed according to claim 5 is characterized in that The elastic rubber pad is provided with a reinforcement layer, which includes a reinforcement plate, a reinforcement net or a reinforcement fiber layer.
7. The anti-spring break floating slab track bed according to claim 1 is characterized in that The auxiliary multifunctional vibration isolator comprises an integrally arranged top plate and an elastic body.
8. The anti-spring break floating slab track bed according to claim 7 is characterized in that It also includes a bottom plate, and the elastic body is located between the top plate and the bottom plate, and the top plate, the bottom plate and the elastic body are integrated.
9. The anti-spring-breakage floating slab track bed according to claim 7 or 8, characterized in that The elastic body is a rubber elastic body, in which a reinforcement layer is arranged, and the reinforcement layer includes a reinforcement plate, a reinforcement net or a reinforcement fiber layer.
10. The anti-spring-break floating slab track bed according to claim 1 is characterized in that It also includes a height-adjusting gasket, which is arranged between the auxiliary multifunctional vibration isolator and the floating plate. The height-adjusting gasket and the auxiliary multifunctional vibration isolator are provided with corresponding limiting holes, and the height-adjusting gasket is connected to the auxiliary multifunctional vibration isolator through limiting pins or fasteners in cooperation with the limiting holes.