Shared vibration isolator for floating slab ballast bed
By designing a shared vibration isolator including an upper support, a lower support, a spring assembly, a sealing device and a leveling pad, the lateral offset of the vibration isolator, the shift of the height pad and sealing of the prior art is solved. The problem of insufficient results has achieved more stable vibration isolation, higher service life and lower maintenance costs.
Patent Information
- Application Number
- CN202311051480.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-21
- Publication Date
- 2025-02-21
AI Technical Summary
The shared vibration isolator of existing floating plate beds has a lateral offset when the horizontal force is under pressure, resulting in unstable vibration isolation effect. The pad is adjusted without locking measures to cause displacement, and the sealing measures are not considered, resulting in spring and Damping is exposed to harsh environments, affecting service life.
A shared vibration isolator including an upper support, a lower support, a spring assembly, a sealing device and a leveling pad are designed. The upper and lower support are bolted to limit the lateral displacement of the spring; a sealing device is used to prevent debris from entering; the leveling pad is fixed by bolts to prevent displacement; the limiting block and sealing strip are used for protection and buffering.
It enhances the overall stability of the structure, improves the stability of the vibration isolation effect, prevents misalignment of the leveling pads, reduces operating and maintenance costs, extends the service life of the product, and simplifies the operation and maintenance process.
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Abstract
Description
Technical Field
[0001] The invention relates to the field of track technology, and in particular to a shared vibration isolator for a floating plate track bed. Background Art
[0002] With the development of society and the progress of science and technology, major cities are paying more and more attention to the development of urban rail transit. With the rapid development of urban rail transit, a large number of lines inevitably pass through densely populated areas and important buildings. The vibration and noise generated by trains have seriously affected people's normal work and life. In order to reduce the interference to the upper or surrounding properties of rail transit and residents along the line, setting up steel spring floating plate roadbed in special sections is an important vibration isolation measure in subway construction. The steel spring floating roadbed system has the characteristics of good vibration isolation effect, long service life and stable performance, and is widely used in urban rail transit lines.
[0003] Steel spring floating slabs are divided into precast slabs and cast-in-place slabs. Among them, the shared vibration isolator is suitable for precast slabs. It is a spring vibration isolator used in the joints of adjacent floating slabs, which can smoothly transition and reliably connect. It has a certain rigidity and can effectively protect the weak stress position in the joints of adjacent floating slabs, protect the life of the floating slab, and make the line structure of the floating slab track bed complete and smooth.
[0004] The existing floating plate shared vibration isolator has the following problems in the upper and lower split structures: When the vibration isolator is subjected to force in the horizontal direction during operation, the spring will be laterally offset accordingly, causing shaking in the horizontal direction, making the vibration isolation effect unstable and difficult to transition smoothly; There is no locking measure for the height adjustment pads, which causes some of the height adjustment pads to shift during operation, affecting the stability of the floating slab track bed and increasing the workload of maintenance; The existing shared vibration isolators do not take sealing measures into consideration, and the springs and dampers are exposed to the harsh operating environment under the plate for a long time, which accelerates corrosion and aging, affects the service life of the product, and increases the workload of engineering maintenance and repair. Summary of the invention
[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a shared vibration isolator for a floating slab track bed.
[0006] To achieve the above object, the present invention adopts the following technical solutions: A shared vibration isolator for a floating slab track bed comprises an upper support, a lower support, a spring assembly, a sealing device, and a leveling pad; The upper support is a square frame with a bottom, and a limit block and a positioning block are arranged on the upper surface of the upper support; the limit block and the positioning block are respectively arranged at the center positions of the two ends of the upper support, and a lower support is arranged below the upper support, and the lower support is a square frame with a bottom and has the same size as the upper support, and the lower support and the upper support are fixed by bolts, a cavity is formed between the upper support and the lower support, and there is a gap between the upper support and the frame of the lower support; A plurality of spring assemblies capable of reducing vibration are arranged in the cavity; The sealing device is arranged on the outer surfaces of the upper support and the lower support; The leveling pad is arranged on the upper surface of the upper support and between the limiting block and the positioning block.
[0007] Preferably, the spring assembly includes a spring and a spring stop tube, and a plurality of the springs are arranged in an array on the lower surface of the upper support and the upper surface of the lower support, the spring stop tubes of the upper support and the lower support correspond one to one, and the plurality of spring stop tubes are all columnar structures, and the upper and lower ends of the plurality of springs are respectively sleeved on the outer surfaces of the two spring stop tubes corresponding to the upper support and the lower support, and the inner diameter of the spring is adapted to the outer diameter of the spring stop tube.
[0008] Preferably, the height of the spring stop tube is lower than the corresponding height of the side frames of the upper support and the lower support, and when the spring is compressed to the limit, the upper support and the lower support do not contact each other.
[0009] Preferably, the sealing device includes a sealing ring and a stainless steel clamp. The sealing ring is arranged on the outer surfaces of the upper support and the lower support and wraps the gap between the upper support and the lower support. The two stainless steel clamps are respectively arranged at the upper and lower ends of the sealing ring.
[0010] Preferably, the limit block is welded at the center of one end of the upper support, and the inner side surface of the limit block is a plane and the length is half of the width of the upper support.
[0011] Preferably, a double U-shaped rubber sealing strip is provided on the inner side of the limit block.
[0012] Preferably, the leveling pad is a split structure, the leveling pad is fixed to the upper support by bolts, and is symmetrical with respect to the central axis of the limit block and the positioning block.
[0013] Preferably, D3O material is arranged between the spring stop tube and the spring, and the D3O material adheres to the outer surface of the spring stop tube.
[0014] Compared with the prior art, the present invention has the following beneficial effects: The horizontal displacement caused by the horizontal movement of the spring is limited by bolts, the lateral displacement of the spring is reduced, and the overall stability of the structure is enhanced; The split leveling plate structure greatly improves the construction progress of the precast panel lifting. At the same time, the leveling plate can be fixed with bolts to prevent the leveling plate from being dislocated or removed during operation. The sealing device prevents debris from entering the isolator, and also prevents the spring and damper from being exposed to the harsh operating environment under the board for a long time, reducing the cost of operation and maintenance and improving the stability and service life of the product; The limit blocks greatly facilitate the leveling and operation and maintenance of the floating plate. They can also protect the product under extreme working conditions. At the same time, they reduce the weight of the product and facilitate construction and operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic structural diagram of a vibration isolator according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the side installation of the sealing device of Example 1 of the present invention; Figure 3 This is a schematic diagram of the installation position of the leveling pad and the upper support in Example 1 of the present invention; Figure 4 It is a side view of the spring assembly of embodiment 1 of the present invention. Implementation
[0016] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.
[0017] A shared vibration isolator for a floating plate track bed, comprising an upper support 1, a lower support 2, a spring 31 assembly 3, a sealing device 4, and a leveling pad 5; The upper support 1 is a square frame with a bottom, and a limit block 11 and a positioning block 12 are arranged on the upper surface of the upper support 1; the limit block 11 and the positioning block 12 are respectively arranged at the center positions of both ends of the upper support 1, and a lower support 2 is arranged below the upper support 1. The lower support 2 is a square frame with a bottom and has the same size as the upper support 1. The lower support 2 and the upper support 1 are fixed by bolts, and a cavity 6 is formed between the upper support 1 and the lower support 2, and there is a gap between the upper support 1 and the frame of the lower support 2; A plurality of spring assemblies 3 capable of reducing vibration are arranged in the cavity 6; The sealing device 4 is arranged on the outer surface of the upper support 1 and the lower support 2; The leveling pad 5 is arranged on the upper surface of the upper support 1 and between the limiting block 11 and the positioning block 12 .
[0018] When the upper support 1 is subjected to force in the horizontal direction during operation, the spring assembly 3 will undergo lateral displacement. At this time, the upper support 1 and the lower support 2 are laterally limited by bolts to limit the horizontal displacement caused by the horizontal movement of the spring assembly 3, reduce the lateral displacement of the spring 31, and enhance the overall stability of the structure.
[0019] Preferably, the spring assembly 3 includes a spring 31 and a spring retaining tube 32. A plurality of springs 31 are arranged in an array on the lower surface of the upper support 1 and the upper surface of the lower support 2. The spring retaining tubes 32 of the upper support 1 and the lower support 2 correspond one to one. The plurality of spring retaining tubes 32 are all columnar structures. The upper and lower ends of the plurality of springs 31 are respectively sleeved on the outer surfaces of the two spring retaining tubes 32 corresponding to the upper support 1 and the lower support 2. The inner diameter of the spring 31 is adapted to the outer diameter of the spring retaining tube 32. The plurality of springs 31 and the spring retaining tube 32 form a composite spring 31 vibration isolator. The plurality of spring retaining tubes 32 effectively limit the horizontal movement of the spring 31. At the same time, the spring 31 is a steel spring 31, which is a three-dimensional force-bearing buffer component and can effectively reduce vibration and isolate vibration.
[0020] Preferably, the height of the spring stop tube 32 is lower than the height of the corresponding side frames of the upper support 1 and the lower support 2. When the spring 31 is compressed to the limit, the upper support 1 and the lower support 2 do not contact each other, and there is a gap between the upper support 1 and the lower support 2 to prevent the upper support 1 from compressing the spring 31 during operation. The distance between the upper support 1 and the lower support 2 continues to shrink and cause a collision, thereby failing to achieve an effective vibration reduction effect and greatly reducing the service life of the vibration isolator.
[0021] Preferably, the sealing device 4 includes a sealing ring 41 and a stainless steel clamp 42. The sealing ring 41 is arranged on the outer surfaces of the upper support 1 and the lower support 2, and wraps the gap between the upper support 1 and the lower support 2. Two stainless steel clamps 42 are respectively arranged at the upper and lower ends of the sealing ring 41. The sealing ring 41 wraps the gap between the frames of the upper support 1 and the lower support 2 to prevent debris from entering the cavity 6 and damaging the spring 31 and the spring retaining tube 32, thereby affecting the stability and service life of the vibration isolator and reducing the operation and maintenance costs. The two stainless steel clamps 42 fix the upper and lower ends of the sealing ring 41 to the upper support 1 and the lower support 2 respectively to prevent the sealing ring 41 from being unstable and falling off when the upper support 1 moves up and down.
[0022] Preferably, the limit block 11 is welded at the center of one end of the upper support 1, the inner side surface of the limit block 11 is flat and the length is half the width of the upper support 1, the limit block 11 is fixed on the upper support 1 and cooperates with the positioning block 12 to limit the prefabricated panel between the two. The larger inner side surface area of the limit block 11 reduces the pressure on the limit block 11 during operation, and compared with the traditional limit block 11, the installation of the locking block is eliminated, and there is no need to repeatedly lift, insert and adjust the locking block during the leveling process, which greatly improves the installation efficiency. The locking block is inserted between the prefabricated panel and the limit block 11, and the prefabricated panel will shake during use, and the elimination of the locking block eliminates the possibility of shaking of the prefabricated panel.
[0023] Preferably, a double U-shaped rubber sealing strip is provided on the inner side of the limit block 11, and the double U-shaped rubber sealing strip wraps the inner side of the limit block 11 and contacts the prefabricated plate, thereby increasing the buffering effect, reducing the hard contact between the prefabricated plate and the limit block 11, and effectively increasing the service life of the limit block 11.
[0024] Preferably, the leveling plate 5 is a split structure, which is fixed to the upper support 1 by bolts and is symmetrical with respect to the central axis of the limit block 11 and the positioning block 12. The leveling plate 5 is fixed to the upper support 1 by bolts to prevent the leveling plate 5 from sliding and damaging the galvanized layer of the positioning block 12 and the limit block 11, thereby affecting the product's anti-corrosion performance. The split structure enables the leveling plate 5 to be inserted into the upper support 1 from the side for installation. When there is a height deviation between the foundations of two adjacent floating plates, they can be leveled separately without causing height inconsistency on both sides. At the same time, it also reduces the difficulty of operation and improves work efficiency.
[0025] Preferably, D3O material is arranged between the spring stop tube 32 and the spring 31, and the D3O material is adhered to the outer surface of the spring stop tube 32. The D3O material is a smart material with controllable deformation, which can quickly harden when subjected to force and provide excellent impact absorption and protection performance. The D3O material is arranged on the surface of the spring stop tube 32 to provide additional protection and buffering effects, so that the lateral micro-displacement of the spring is weakened or even eliminated, thereby greatly enhancing the stability of the overall structure.
[0026] In the present invention, multiple springs 31 are sleeved on the corresponding spring retaining tubes 32 of the lower support 2, and then an appropriate amount of damping material is poured in to overflow the bottom of the spring 31. After the damping solidifies, the sealing ring 41 and the stainless steel clamp 42 are installed first, and then the upper support 1 is covered. The multiple spring retaining tubes 32 of the upper support 1 are inserted into the corresponding springs 31, and the upper support 1 and the lower support 2 are fixed by bolts. Then the sealing ring 41 is pulled between the upper support 1 and the lower support 2 and wraps the middle of the gap between the upper support 1 and the frame of the lower support 2, and is locked and fixed with two stainless steel clamps 42 respectively. Finally, a double U-shaped rubber sealing strip is installed on the inner side of the limit block 11.
[0027] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.
Claims
1. A shared vibration isolator for a floating slab track bed, characterized in that: It comprises an upper support (1), a lower support (2), a spring assembly (3), a sealing device (4), and a leveling pad (5); The upper support (1) is a square frame with a bottom, and a limit block (11) and a positioning block (12) are arranged on the upper surface of the upper support (1); the limit block (11) and the positioning block (12) are respectively arranged at the center positions of the two ends of the upper support (1), and a lower support (2) is arranged below the upper support (1); the lower support (2) is a square frame with a bottom and has the same size as the upper support (1); the lower support (2) and the upper support (1) are fixed by bolts, and a cavity (6) is formed between the upper support (1) and the lower support (2), and there is a gap between the frames of the upper support (1) and the lower support (2); A plurality of spring assemblies (3) capable of reducing vibration are arranged in the cavity (6); The sealing device (4) is arranged around the outer surfaces of the upper support (1) and the lower support (2); The leveling pad (5) is arranged on the upper surface of the upper support (1) and between the limiting block (11) and the positioning block (12).
2. A shared vibration isolator for a floating slab track bed as claimed in claim 1, characterized in that: The spring assembly (3) comprises a spring (31) and a spring retaining tube (32). A plurality of the springs (31) are arranged in an array on the lower surface of the upper support (1) and the upper surface of the lower support (2). The spring retaining tubes (32) of the upper support (1) and the lower support (2) correspond to each other one by one. The plurality of spring retaining tubes (32) are all columnar structures. The upper ends and lower ends of the plurality of springs (31) are respectively sleeved on the outer surfaces of the two spring retaining tubes (32) corresponding to the upper support (1) and the lower support (2). The inner diameter of the spring (31) is adapted to the outer diameter of the spring retaining tube (32).
3. A shared vibration isolator for a floating slab track bed as claimed in claim 2, characterized in that: The height of the spring retaining tube (32) is lower than the height of the corresponding side frames of the upper support (1) and the lower support (2); when the spring (31) is compressed to the limit, the upper support (1) and the lower support (2) do not contact each other.
4. A shared vibration isolator for a floating slab track bed as claimed in claim 1, characterized in that: The sealing device (4) comprises a sealing ring (41) and a stainless steel clamp (42); the sealing ring (41) is arranged on the outer surfaces of the upper support (1) and the lower support (2) and covers the gap between the upper support (1) and the lower support (2); and the two stainless steel clamps (42) are respectively arranged at the upper and lower ends of the sealing ring (41).
5. The shared vibration isolator for a floating slab track bed according to claim 1, characterized in that: The limit block (11) is welded to the center of one end of the upper support (1); the inner side surface of the limit block (11) is a plane and the length is half the width of the upper support (1).
6. A shared vibration isolator for a floating slab track bed as claimed in claim 1, characterized in that: A double U-shaped rubber sealing strip is provided on the inner side of the limit block (11).
7. The shared vibration isolator for a floating slab track bed according to claim 1, characterized in that: The leveling pad (5) is a split structure, and the leveling pad (5) is fixed to the upper support (1) by means of bolts, and is symmetrical with respect to the central axis of the limit block (11) and the positioning block (12).
8. The shared vibration isolator for a floating slab track bed according to claim 1, characterized in that: D3O material is arranged between the spring stop tube (32) and the spring (31), and the D3O material adheres to the outer surface of the spring stop tube (32).