A limiting device for a prefabricated floating slab track structure

Abstract

The utility model discloses a prefabricated floating plate track structure's stop device belongs to railway track technical field. A prefabricated floating plate track structure's stop device, including setting up in prefabricated floating plate end angle floating plate groove, be equipped with the limit base at floating plate groove, limit base is close to the side installation of floating plate groove limit baffle, install the elastic component between limit baffle with the lateral wall of floating plate groove, the elastic component at least includes metal layer and rubber layer, through the design of floating plate groove and limit baffle structure, the utility model can accurately limit the relative displacement between adjacent track board, and the matching size of the "L" design of floating plate groove and limit baffle, ensure the close cooperation between limit device and prefabricated floating plate, effectively prevented the displacement and extrusion of track board under the train impact horizontal load effect, thereby protected floating plate, spring isolator and other key components from damage.

Description

Technical Field

[0001] This utility model belongs to the field of railway track technology, and in particular relates to a limiting device for a prefabricated floating slab track structure. Background Technology

[0002] In the field of railway track technology, precast floating slab track structures are widely used due to their excellent vibration isolation and reduction performance. This structure absorbs the impact load of train operation by increasing the mass and elasticity of the vibrating body and transferring most of the dynamic load to the foundation pad through elastic supports, thereby achieving the effect of reducing vibration and noise. However, in practical applications, precast floating slab track structures also face some challenges.

[0003] Especially in floating slab track structures located on sections with large longitudinal slopes, the impact of train horizontal loads can easily cause mutual displacement and compression between adjacent track slabs. This displacement and compression can not only lead to damage and failure of components such as floating slabs and spring vibration isolators, but may also cause track subsidence and other defects, seriously affecting train operation safety.

[0004] Currently, some limiting devices have been applied to precast floating slab track structures. However, these limiting devices have many shortcomings in design and material selection, such as poor limiting effect, poor durability, and lack of sufficient elasticity and shock absorption performance. Therefore, in practical applications, these limiting devices often cannot effectively limit the relative displacement between adjacent track slabs, nor can they effectively absorb and disperse the vibration energy of train operation. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a limiting device for a prefabricated floating slab track structure.

[0006] To achieve the above objectives, the utility model employs the following technical solution: a limiting device for a prefabricated floating slab track structure, comprising a floating slab groove formed at the end corner of the prefabricated floating slab, a limiting base provided at the floating slab groove, a limiting baffle installed on the side of the limiting base near the floating slab groove, and an elastic component installed between the limiting baffle and the side wall of the floating slab groove; the elastic component comprises at least a metal layer and a rubber layer.

[0007] By adopting the above technical solution, the limiting device, through its ingenious design, effectively limits the prefabricated floating slab, ensuring the stability and safety of the track structure. By using the floating slab groove at the docking end of the prefabricated floating slab and the limiting base connected to the track structure, along with the use of limiting baffles and elastic components, the device can effectively limit the displacement of the floating slab, preventing it from moving excessively due to external forces, thereby ensuring the smoothness of the track and the safety of train operation.

[0008] Optionally, the floating plate trough is L-shaped and symmetrically distributed. The length of the long side of the floating plate trough is 10cm-15cm, the length of the short side is 5cm-10cm, and the thickness of the floating plate trough is the same as that of the prefabricated floating plate.

[0009] By adopting the above technical solution, the "L"-shaped design and symmetrical distribution of the floating plate trough enable the limiting device to be more evenly distributed at the docking end of the floating plate, thereby improving the stability and reliability of the limiting. At the same time, the size design of the floating plate trough is reasonable, which can accommodate the limiting baffle and elastic components without causing too much impact on the overall structure of the floating plate.

[0010] Optionally, the surface of the limiting base is provided with a plurality of fixing holes, and the limiting base is connected to the track structure through anchor bolts and fixing holes.

[0011] By adopting the above technical solution, the design of the fixing holes and anchor bolts on the limiting base enables the limiting device to be firmly connected to the track structure, preventing the limiting device from falling off or loosening due to external forces. This connection method is simple and reliable, easy to install and maintain, and improves the service life and safety of the limiting device.

[0012] Optionally, the limiting baffle is L-shaped, the lengths of the long and short sides of the limiting baffle are the same as the length of the floating plate groove, and the thickness of the limiting baffle is 2cm-4cm.

[0013] By adopting the above technical solution, the "L"-shaped design of the limiting baffle and the same length as the floating plate trough enable the limiting baffle to fit tightly against the side wall of the floating plate trough, effectively limiting the displacement of the floating plate; at the same time, the thickness of the limiting baffle is moderate, which can provide sufficient strength to resist external forces without putting too much pressure on the floating plate.

[0014] Optionally, the side of the limiting baffle away from the limiting base is an inclined surface, a cavity structure is formed between the limiting baffle and the limiting base, and the cross-section of the cavity structure is trapezoidal.

[0015] By adopting the above technical solution, the design of the inclined surface of the limiting baffle and the formation of the cavity structure make it easier for the elastic component to adapt to the gap between the limiting baffle and the limiting base during installation, thus improving the convenience and accuracy of installation. At the same time, the trapezoidal cavity structure can better disperse the external force, thereby improving the load-bearing capacity and stability of the limiting device.

[0016] Optionally, the elastic component has an inclined surface on the side near the limiting baffle, the elastic component is located inside the cavity structure, and the thickness of the elastic component is 2cm-4cm.

[0017] By adopting the above technical solution, the elastic component is located inside the cavity structure, which allows the elastic component to be tightly filled in the cavity structure, providing good elasticity and buffering effect. At the same time, the thickness of the elastic component is moderate, which can absorb and disperse the external force without causing too much impact on the overall structure of the limiting device.

[0018] Optionally, the cross-sections of the elastic component and the limiting baffle are trapezoidal, the width of the lower end face of the elastic component is greater than the width of the upper end face, the width of the upper end face of the limiting baffle is greater than the width of the lower end face, and the inclined surfaces of the elastic component and the limiting baffle are fitted together without gap.

[0019] By adopting the above technical solution, this design enables the elastic component and the limiting baffle to fit together seamlessly on the inclined surface, thereby enhancing the overall stability and sealing of the limiting device. When the train is running or subjected to other external forces, this tight fit can effectively prevent displacement or deformation, ensuring the stability and safety of the track structure. Secondly, the trapezoidal design also allows the elastic component to better adapt to the gap between the limiting baffle and the float groove, improving the convenience and accuracy of installation. During installation, operators can more easily place the elastic component in the correct position and ensure its tight fit with the limiting baffle and the float groove.

[0020] The elastic component comprises, from the inside out, a metal layer, a rubber layer, a fiber layer, and a protective layer. The metal layer is a steel plate, the rubber layer is EPDM rubber, the fiber layer is glass fiber, and the protective layer is thermoplastic vulcanized rubber.

[0021] By adopting the above technical solutions, the steel plate design gives the elastic component higher strength and rigidity, enabling it to better resist external forces and improve the load-bearing capacity and durability of the limiting device; EPDM rubber also has good elasticity and sealing performance, effectively absorbing and dispersing external forces, improving the buffering effect of the limiting device; glass fiber gives the elastic component higher strength and toughness, enabling it to better resist external forces and prevent the elastic component from cracking or deforming due to excessive force; thermoplastic vulcanized rubber is a material with a low coefficient of friction, which can reduce the frictional resistance between moving parts while maintaining sufficient elasticity.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. Through the designed floating plate groove and limiting baffle structure, this utility model can accurately limit the relative displacement between adjacent track slabs. The "L" shape design of the floating plate groove and the matching size of the limiting baffle ensure a tight fit between the limiting device and the prefabricated floating plate, effectively preventing the track slab from displacement and compression under the action of train impact horizontal load, thereby protecting key components such as floating plates and spring vibration isolators from damage.

[0024] 2. The cavity structure formed between the limiting baffle and the limiting base, and the elastic component filled in the cavity, together constitute a robust and durable limiting system. The elastic component consists of a metal layer, a rubber layer, a fiber layer, and a protective layer. The selection of these materials not only improves the strength and toughness of the elastic component, but also enhances its wear resistance and corrosion resistance, ensuring the stability and reliability of the limiting device in long-term use.

[0025] 3. The design of the fixing holes and anchor bolts on the surface of the limiting base makes it easy to install the limiting device onto the track structure; at the same time, since the elastic component and the limiting baffle have relatively simple structures and the materials are easy to obtain and process, the maintenance and replacement of the limiting device also become easier and faster. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the limiting device for the prefabricated floating slab track structure of this utility model;

[0027] Figure 2 This is a three-dimensional structural diagram of the elastic component of this utility model;

[0028] Figure 3 This is a cross-sectional view of the elastic component of this utility model;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the limiting base and limiting baffle of this utility model.

[0030] In the figure: 1. Precast floating slab; 2. Floating slab trough; 3. Limiting base; 301. Fixing hole; 4. Limiting baffle; 5. Elastic component; 51. Metal layer; 52. Rubber layer; 53. Fiber layer; 54. Protective layer. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] like Figure 1 As shown in Figure 4, the specific solution of the embodiment is as follows: A limiting device for a prefabricated floating slab track structure includes floating plate grooves 2 opened at the two docking ends of the prefabricated floating slab 1. The floating plate grooves 2 are "L" shaped and the two floating plate grooves 2 are symmetrically distributed. The length of the long side of the floating plate groove 2 is 10cm-15cm, and the length of the short side is 5cm-10cm. The thickness of the floating plate groove 2 is the same as that of the prefabricated floating slab 1. The floating plate groove 2 provides a precise insertion position for the limiting baffle 4. At the same time, the "L" shape of the floating plate groove 2 increases the contact area, which is beneficial for dispersing and resisting external loads and improving the stability of the overall structure.

[0034] And a limiting base 3 connected to the track structure, the surface of the limiting base 3 is provided with a plurality of fixing holes 301, the limiting base 3 is connected to the track structure through anchor bolts and fixing holes 301, the limiting baffle 4 is "L" shaped, the length of the long side and the short side of the limiting baffle 4 are the same as the length of the floating plate groove 2, and the thickness of the limiting baffle 4 is 2cm-4cm;

[0035] The limiting base 3 serves as the foundation of the entire limiting device, ensuring that the limiting baffle 4 can be stably installed on the track structure. Through the cooperation of anchor bolts and fixing holes 301, the limiting base 3 and the track structure are tightly connected, improving the stability and reliability of the limiting device.

[0036] A limiting baffle 4 is installed on the side of the limiting base 3 near the floating plate trough 2. The side of the limiting baffle 4 away from the limiting base 3 is an inclined surface. A cavity structure is formed between the limiting baffle 4 and the limiting base 3, and the cross-section of the cavity structure is trapezoidal. The design of the limiting baffle 4 not only conforms to the shape of the floating plate trough 2, but also provides an effective limiting effect when subjected to external loads. The inclined surface design can prevent the elastic component 5 from detaching from the cavity structure when subjected to external forces. At the same time, the cavity structure provides space for the installation of the elastic component 5, enhancing the buffering capacity of the limiting device.

[0037] An elastic component 5 is installed between the limiting baffle 4 and the side wall of the floating plate trough 2. The cross-sections of the elastic component 5 and the limiting baffle 4 are trapezoidal. The width of the lower end face of the elastic component 5 is greater than the width of the upper end face, and the width of the upper end face of the limiting baffle 4 is greater than the width of the lower end face. The inclined surfaces of the elastic component 5 and the limiting baffle 4 are fitted without gaps. The elastic component 5 has the same shape as the cavity structure. The thickness of the elastic component 5 is 2cm-4cm. The elastic component 5 includes, from the inside out, a metal layer 51, a rubber layer 52, a fiber layer 53, and a protective layer 54. Rubber layers 52 are provided on both sides of the metal layer 51, fiber layers 53 are provided on both sides of the two rubber layers 52, and a protective layer 54 is provided on the outer fiber layer 53.

[0038] The metal layer 51 is a steel plate, and the rubber layer 52 is EPDM rubber. EPDM rubber can effectively absorb and disperse these impact forces, protecting the track and train from damage. At the same time, EPDM rubber has good sound insulation and vibration reduction properties, which can significantly reduce the noise and vibration generated during train operation and improve passenger comfort. The fiber layer 53 is glass fiber, which has the advantages of high mechanical strength. Therefore, glass fiber can be used as a reinforcement for the rubber layer 52 to enhance the tensile strength of the rubber layer 52, that is, to prevent the rubber layer 52 from deforming during the pressing process, effectively extending the service life of the product. The protective layer 54 is thermoplastic vulcanized rubber, which is a material with a low coefficient of friction. It can reduce the frictional resistance between moving parts while maintaining sufficient elasticity.

[0039] The elastic component 5 is a key component in the limiting device. It can provide effective buffering and shock absorption when the floating plate is subjected to external forces. The metal layer 51 enhances the strength and stability of the elastic component 5; the rubber layer 52 has good elasticity and wear resistance, and can absorb and disperse impact forces; the fiber layer 53 further strengthens the tensile strength of the rubber layer 52 and prevents it from deforming during the pressing process; the protective layer 54 reduces the coefficient of friction, reduces the frictional resistance between moving parts, and maintains sufficient elasticity. The combination of these materials gives the elastic component 5 excellent comprehensive performance and effectively extends the service life of the limiting device.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limiting device for a prefabricated floating slab track structure, characterized in that, The device includes a floating plate groove at the corner of the precast floating plate, a limiting base at the floating plate groove, a limiting baffle installed on the side of the limiting base near the floating plate groove, and an elastic component installed between the limiting baffle and the side wall of the floating plate groove; the elastic component includes at least a metal layer and a rubber layer.

2. The limiting device for a prefabricated floating slab track structure according to claim 1, characterized in that: The floating plate trough is L-shaped and symmetrically distributed. The length of the long side of the floating plate trough is 10cm-15cm, and the length of the short side is 5cm-10cm. The thickness of the floating plate trough is the same as that of the prefabricated floating plate.

3. The limiting device for a prefabricated floating slab track structure according to claim 1, characterized in that: The surface of the limiting base is provided with several fixing holes, and the limiting base is connected to the track structure through anchor bolts and fixing holes.

4. The limiting device for a prefabricated floating slab track structure according to claim 1, characterized in that: The limiting baffle is "L" shaped, and the lengths of the long and short sides of the limiting baffle are the same as the length of the floating plate groove. The thickness of the limiting baffle is 2cm-4cm.

5. The limiting device for a prefabricated floating slab track structure according to claim 1, characterized in that: The side of the limiting baffle away from the limiting base is an inclined surface, and a cavity structure is formed between the limiting baffle and the limiting base, and the cross-section of the cavity structure is trapezoidal.

6. The limiting device for a prefabricated floating slab track structure according to claim 5, characterized in that: The elastic component has an inclined surface on the side near the limiting baffle, the elastic component is located inside the cavity structure, and the thickness of the elastic component is 2cm-4cm.

7. The limiting device for a prefabricated floating slab track structure according to claim 1, characterized in that: The cross-sections of the elastic component and the limiting baffle are trapezoidal, the width of the lower end face of the elastic component is greater than the width of the upper end face, the width of the upper end face of the limiting baffle is greater than the width of the lower end face, and the inclined surfaces of the elastic component and the limiting baffle are fitted together without gap.

8. The limiting device for a prefabricated floating slab track structure according to claim 1, characterized in that: The elastic component comprises, from the inside out, a metal layer, a rubber layer, a fiber layer, and a protective layer. The metal layer is a steel plate, the rubber layer is EPDM rubber, the fiber layer is glass fiber, and the protective layer is thermoplastic vulcanized rubber.

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