Rubber spring vibration isolator for rail transit floating slab

Abstract

The utility model relates to a rubber spring vibration isolator for a rail transit floating slab, which comprises a bearing plate, a rubber layer, a structural plate and a bottom plate which are vulcanized into a whole and sequentially distributed from top to bottom, the bearing plate, the structural plate and the bottom plate are arranged in the rubber layer, and the rubber layer is distributed in different thicknesses. The bearing capacity is large, the service life is long, and the damping effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction and noise reduction in rail transit, in particular to a rubber spring vibration isolator for a rail transit floating plate. Background Art

[0002] As the vibration and noise problems of rail transit are becoming more and more acute with the continuous improvement of urban life quality, higher requirements are put forward for the control of rail transit vibration and noise problems, which can more effectively alleviate the impact, isolate vibration and prevent the transmission of noise to the interior of the vehicle. In the extensive research and engineering practice of rail transit vibration reduction and noise reduction technology at home and abroad, steel springs, rubber spring floating plates, ballast pad floating plates, and trapezoidal sleeper tracks have been developed.

[0003] Ballast pad ballast and trapezoidal sleepers are also used in high-quality vibration reduction areas in China, but ballast pad sleepers are difficult to repair and replace, and the service life of rubber pads is limited. Trapezoidal sleepers are small in mass, have high vibration frequencies and unsatisfactory vibration reduction effects, and are rarely used in underground lines. The steel spring / rubber spring floating slab ballast has an obvious vibration reduction effect and is the main vibration reduction measure for urban rail transit. According to feedback from construction and operation, steel spring isolators have the risk of spring breakage, a large amount of subsequent overhaul and maintenance work, and prominent noise problems in the car. Rubber spring isolators are safer and more reliable than steel springs. In view of vehicle safety operation and environmental requirements, it is very necessary to develop new rubber spring isolators that are technically feasible and have good economic, environmental and social comprehensive benefits. Utility Model Content

[0004] In view of the shortcomings of the existing steel spring technology, the purpose of the utility model is to provide a rubber spring isolator for rail transit floating plates, which has a large load-bearing capacity, a long service life and a significant vibration reduction effect.

[0005] The above utility model object of the utility model is achieved through the following technical solutions:

[0006] A rubber spring vibration isolator for a rail transit floating plate comprises a load-bearing plate, a rubber layer and a bottom plate which are vulcanized into one, wherein the load-bearing plate and the bottom plate are arranged in the rubber layer.

[0007] As a further technical solution of the utility model: it also includes one or more layers of structural plates, and the structural plates are arranged between the bearing plate and the bottom plate and located in the rubber layer.

[0008] As a further technical solution of the utility model: the rubber layers are distributed in the same or different thicknesses.

[0009] As a further technical solution of the utility model: the structural plate is provided as one piece, and the structural plate separates the rubber layer into two rubber layers.

[0010] As a further technical solution of the utility model: a plurality of locking bolt holes are provided on the bearing plate.

[0011] As a further technical solution of the utility model: the structural plate is provided with a plurality of small holes in a circumferential direction within a certain radius.

[0012] As a further technical solution of the utility model: the structural plate is provided in two pieces, and the structural plate separates the rubber layer into three rubber layers.

[0013] As a further technical solution of the utility model: the bearing plate is circular, and three cantilever ear plates are evenly arranged around the bearing plate.

[0014] As a further technical solution of the utility model: the bearing plate is circular, and arc-shaped ear plates are symmetrically arranged on both sides of the bearing plate with respect to the central axis of the bearing plate.

[0015] In summary, the present invention includes at least one of the following beneficial technical effects:

[0016] 1. The utility model discloses a rubber spring isolator for rail transit floating plate, which has large load-bearing capacity and good elasticity, ensuring the stability and safety of vehicle operation. On the other hand, the rubber spring isolator has durability and significant vibration reduction effect.

[0017] 2. The installation method of the integrated rubber vibration isolator and the embedded outer sleeve of the present invention is convenient and fast to install.

[0018] 3. The present invention adopts different rubber layer thicknesses to optimize the damage of compression deformation to rubber extrusion wrinkles and improve fatigue life.

[0019] 4. The outer diameter of the structural plate of the present invention is smaller than that of the bottom plate, which is more conducive to the release of rubber deformation strain and improves the service life of the rubber spring isolator. The different stiffness requirements of the floating plate isolator can be adjusted by increasing the thickness of the structural plate or increasing the number of structural plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the planar structure of the first embodiment.

[0021] Figure 2 It is a top view of the first embodiment.

[0022] Figure 3 It is a top view of the second embodiment.

[0023] Figure 4 This is a schematic diagram of the planar structure of the third embodiment.

[0024] Figure 5This is a schematic diagram of the planar structure of the fourth embodiment.

[0025] Reference numerals: 1. bearing plate; 2. rubber layer; 3. structural plate; 4. bottom plate; 5. cantilever ear plate; 6. locking bolt hole; 7. arc-shaped ear plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] Reference Figure 1 , a rubber spring isolator for a rail transit floating plate disclosed in the utility model, includes a load-bearing plate 1, a rubber layer 2, a structural plate 3 and a bottom plate 4 which are vulcanized and packaged as a whole and are distributed in sequence from top to bottom. The load-bearing plate 1, the structural plate 3 and the bottom plate 4 are arranged in the rubber layer 2, and the layers of the rubber layer 2 are distributed with the same or different thicknesses. In this embodiment, the layers of the rubber layer 2 are distributed with different thicknesses, which optimizes the influence of the superimposed compression deformation of the dead load and the live load on the strain distribution as much as possible, and improves the fatigue life of the rubber.

[0031] In order to better meet the vibration reduction and noise reduction requirements of the floating slab of rail transit, the vibration isolation of the floating slab roadbed is based on the pre-embedded sleeve with the target support plate, and then the vibration isolator is placed in the floating jacking method of the support system that contacts the target support plate with the help of the load-bearing plate 1. The path and support system of the mutual overlap transfer of the load between the rubber vibration isolator and the pre-embedded sleeve are optimized through structural design and vulcanization process. The rubber spring itself is integrally vulcanized with the load-bearing plate 1 to improve the integrity and environmental applicability of the rubber spring vibration isolator. Optimize the process and operability; adopt the design of different rubber layer 2 thicknesses to optimize the rubber compression deformation strain and increase the service life of the rubber spring. The multi-directional strain release design is adopted to achieve more stable compression and increase the fatigue life of the rubber spring.

[0032] The rubber layer 2 is distributed with different thicknesses to optimize the effect of the superimposed compression deformation of the dead load and live load on the strain distribution as much as possible, thereby improving the fatigue life of the rubber. In this embodiment, the thickness of the structural plate 3 can be changed, or the number of structural plates 3 can be increased, and different stiffness requirements can be provided in the embedded sleeve of the same specification according to the uneven stiffness setting and requirements.

[0033] Reference Figure 1 The structural plate 3 is set as one piece, and the structural plate 3 separates the rubber layer 2 into two rubber layers 2. The thickness of the rubber layer 2 located above the structural plate 3 is greater than the thickness of the rubber layer 2 located below the structural plate 3. The rubber layer 2 is designed with two layers, and the two rubber layers 2 are designed with different thicknesses, so as to optimize the strain distribution as much as possible and improve the fatigue life.

[0034] Reference Figure 2 A plurality of locking bolt holes 6 are provided on the bearing plate 1. In the present embodiment, three locking bolt holes 6 are provided. The bearing plate 1 is circular. The three locking bolt holes 6 are evenly distributed around the center of the bearing plate 1, and three cantilever ear plates 5 are evenly provided around the bearing plate 1.

[0035] Reference Figure 1 The structural plate 3 is provided with a plurality of small holes (not shown in the figure) in a certain radius range in the circumferential direction to increase the adhesion between the structural plate 3 and the vulcanized interface in the rubber layer 2, reduce the pores and increase the density of the rubber. The outer diameter of the structural plate 3 is smaller than the outer diameter of the bottom plate 4, which is more conducive to the release of the deformation strain of the rubber and improves the service life of the rubber spring isolator.

[0036] Embodiment 2:

[0037] Reference Figure 3 The utility model also discloses a rubber spring vibration isolator for rail transit floating plate, which is different from the first embodiment in that the bearing plate 1 is circular, and arc-shaped ear plates 7 are symmetrically arranged on both sides of the bearing plate 1 with the central axis of the bearing plate 1. The arc-shaped ear plates 7 are arranged in a two-part symmetrical manner and can be used in special-shaped embedded sleeves and fulcrums with narrow space.

[0038] Embodiment three:

[0039] Reference Figure 4 The utility model also discloses a rubber spring vibration isolator for rail transit floating plate, which is different from the first embodiment in that the structural plate 3 is provided in two pieces, and the structural plate 3 separates the rubber layer 2 into three rubber layers. By increasing the number of structural plates 3 and changing the number and thickness of the rubber layer 2, different stiffness and requirements are generated.

[0040] Embodiment 4:

[0041] Reference Figure 5 The utility model also discloses a rubber spring isolator for a rail transit floating plate, which is different from the first embodiment in that it includes a load-bearing plate 1, a rubber layer 2 and a bottom plate 4 that are vulcanized into one, the load-bearing plate 1 and the bottom plate 4 are arranged in the rubber layer 2, and the structural plate 3 is not arranged in the rubber layer 2 in this embodiment.

[0042] The working process of the utility model is as follows: the floating plate is pre-embedded with a sleeve and a target support plate. During the floating jacking construction of the floating plate, the rubber spring isolator is vertically inserted, the bearing plate 1 is vertically inserted avoiding the target support plate, and is rotated so that the bearing plate 1 is hidden under the target support plate to complete the overlap of the support system.

[0043] The implementation principle of the utility model is as follows: The utility model discloses a rubber spring isolator for rail transit floating plates, which adopts an integrated rubber isolator and an embedded sleeve installation method, and is easy and fast to operate. By adjusting the thickness of the rubber layer 2, the damage to the rubber extrusion wrinkles caused by compression deformation is optimized, thereby improving fatigue life. The outer diameter of the structural plate 3 is smaller than the outer diameter of the base plate 4, which is more conducive to the release of rubber deformation strain and improves the service life of the rubber spring isolator. The thickness of the structural plate 3 can be increased or the number of structural plates 3 can be increased to provide different stiffness requirements for the uneven stiffness setting of the floating plate, thereby systematically improving vibration reduction and noise reduction.

[0044] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A rubber spring isolator for rail transit floating plate, characterized in that: It comprises a load-bearing plate (1), a rubber layer (2) and a bottom plate (4) which are vulcanized into one piece, wherein the load-bearing plate (1) and the bottom plate (4) are arranged in the rubber layer (2).

2. The rubber spring isolator for rail transit floating slab according to claim 1, characterized in that: It also comprises one or more layers of structural plates (3), wherein the structural plates (3) are arranged between the bearing plate (1) and the bottom plate (4) and are located inside the rubber layer (2).

3. The rubber spring isolator for rail transit floating slab according to claim 2, characterized in that: Each layer of the rubber layer (2) has the same or different thickness distribution.

4. The rubber spring isolator for rail transit floating slab according to claim 2, characterized in that: The structural plate (3) is provided as one piece, and the structural plate (3) separates the rubber layer (2) into two rubber layers, and the thickness of the rubber layer located above the structural plate (3) is greater than the thickness of the rubber layer located below the structural plate (3).

5. The rubber spring isolator for rail transit floating slab according to claim 1, characterized in that: The bearing plate (1) is provided with a plurality of locking bolt holes (6).

6. The rubber spring vibration isolator for rail transit floating plate according to claim 2, characterized in that: The structural plate (3) is provided with a plurality of small holes in a circumferential direction within a certain radius.

7. The rubber spring isolator for rail transit floating slab according to claim 2, characterized in that: The structural plates (3) are provided in two pieces, and the structural plates (3) separate the rubber layer (2) into three rubber layers.

8. The rubber spring vibration isolator for rail transit floating slab according to claim 1, characterized in that: The bearing plate (1) is circular, and three cantilever ear plates (5) are evenly arranged around the bearing plate (1).

9. The rubber spring vibration isolator for rail transit floating slab according to claim 1, characterized in that: The carrying plate (1) is circular, and arc-shaped ear plates (9) are symmetrically arranged on both sides of the carrying plate (1) with respect to the central axis of the carrying plate (1).

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