A roof segment type turnout damper

Abstract

The application provides a roof segmented turnout damper, which comprises a roof arranged in a bottom plate, the roof and the bottom plate being fixedly connected through vulcanized rubber layers; the roof is of a segmented structure, and two adjacent roofs are connected with the bottom plate through annular inclined surfaces; a horizontal retaining wall is arranged at the bottom plate of the connecting surface of the adjacent annular inclined surfaces, the horizontal retaining wall and the roof are constrained with each other through the rubber layers, and the lateral compression deformation of the adjacent two rubber layers provides the horizontal stiffness. The horizontal stiffness of the damper is mainly provided by the lateral compression deformation between the rubber layers, which is doubled compared with the prior art. The horizontal retaining wall of the bottom plate is adopted instead of the connecting plate, and is integrally formed with the bottom plate; the stiffness performance is reliable, stable damping performance can be provided, and the service life of the product can be prolonged. The application realizes firm anchoring between the turnout damper, the sleeper and the turnout iron pad plate, and smaller vertical stiffness at the same time, so that the turnout damper has higher damping effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shock absorbers, in particular to a top plate segmented turnout shock absorber. BACKGROUND

[0002] At present, the vulcanized integrated shock absorbing fastener used in the turnout section of urban rail transit in China realizes the shock absorbing effect by using rubber shear deformation. However, its disadvantages are that the structure is relatively high, the weight is relatively heavy, and it cannot realize lower stiffness design.

[0003] The existing turnout shock absorber has a large overall size, and the limited structural space makes it difficult to realize lower vertical stiffness. The existing turnout shock absorber is integrated by a single top plate and a single bottom plate through rubber vulcanization, and the lateral stiffness is mainly provided by the lateral compression deformation of the single rubber layer, and the lateral restraint capacity of the product is weak.

[0004] The existing turnout shock absorber needs to be welded with a connecting plate after vulcanization to prevent longitudinal expansion and ensure the stability of the vertical stiffness, and the connecting plate is prone to loosen under long-term use environment. Moreover, the structure height and width of the existing turnout shock absorber are relatively large, and for the sections with height limitation on the track line such as tunnel environment and existing line reconstruction, the applicability is poor.

[0005] After searching the publication number CN111663378A, the name is "Urban rail transit line turnout shock absorber", which utilizes the shear stress of elastomer, can provide three-dimensional elasticity for the track, can solve the defect that the split assembly type structure cannot provide elasticity in the horizontal and vertical directions, greatly improves the comprehensive shock absorbing and noise reduction effect of the track fastener; on the other hand, based on the reverse tensile load bearing capacity of the overall structure design, it can solve the stiffness failure and hanging phenomenon caused by the split assembly type structure due to foundation settlement, and improve the safety and stability of the track fastener system; on the other hand, the sawtooth boss structure of the base plate cooperates with the distance adjusting cover plate, so that the shock absorber has good track gauge maintaining and adjusting capacity. This structure is an integrated structure, the structure is relatively high, and the above-mentioned problems of the prior art cannot be solved.

[0006] In order to adapt to the shock absorbing demand of urban rail transit on the turnout section under the current environment and improve the track gauge maintaining capacity, a top plate segmented turnout shock absorber with low height, high lateral stiffness and high shock absorbing effect needs to be specially developed. SUMMARY

[0007] The present application aims at the deficiencies of the prior art, and designs a top-plate segmented turnout damper, which adopts a segmented top plate, a horizontal retaining wall structure is designed in the middle of the bottom plate, and is constrained by the top plate through a rubber layer. The lateral stiffness of the damper is mainly provided by the lateral compression deformation between the rubber layers, which can be doubled compared with the prior art. The horizontal retaining wall structure of the bottom plate is used to replace the connecting plate and is integrally formed with the bottom plate. The stiffness performance is reliable, stable damping performance can be provided, and the service life of the product can be prolonged.

[0008] To achieve the above-mentioned goal, the specific technical solutions of the present application are as follows:

[0009] A top-plate segmented turnout damper is provided, which comprises a top plate arranged in a bottom plate and fixedly connected through a vulcanized rubber layer between the top plate and the bottom plate. The top plate is of a split structure, and adjacent two top plates are connected to the bottom plate through annular inclined surfaces. A horizontal retaining wall is arranged at the bottom plate of the connecting surface between adjacent annular inclined surfaces, and the horizontal retaining wall and the top plate are constrained by the rubber layer. The lateral stiffness is provided by the lateral compression deformation between adjacent two rubber layers.

[0010] The top plate of the present application adopts a segmented turnout damper with multiple top plates symmetrically arranged in the bottom plate, and the length direction is perpendicular to the direction of the steel rail, which improves the lateral constraint performance of the product. The two top plates are of the same structure and have the same height, which provides effective support for the turnout iron pad.

[0011] Meanwhile, the segmented structure of the top plate breaks through the limitations of the bonding strength of metal and rubber, lateral stiffness and other performance indicators on the design of the product shape structure, further reduces the structure height and width of the product, improves the applicability of the tunnel, existing line reconstruction and other sections with limited track line height, and is especially suitable for the turnout area switch machine and other parts with limited sleeper width. At the same time, the reduction of height and width makes the product miniaturized, and reduces the requirements and investment of each link of production and manufacturing.

[0012] Further, the horizontal retaining wall can be embedded and locked in the bottom plate, and is formed separately from the bottom plate. The horizontal retaining wall structure of the bottom plate is used to replace the connecting plate and is integrally formed with the bottom plate. The material of the horizontal retaining wall can be metal or other high-strength polymer materials. If it is a metal material, it needs to be vulcanized on the annular inclined surface.

[0013] The above-mentioned scheme solves the problem that the existing turnout damper in the prior art needs to be welded with a connecting plate after vulcanization to prevent longitudinal expansion and ensure the stability of vertical stiffness, and the connecting plate is prone to loosen under long-term use environment.

[0014] Further, the top plate is symmetrically arranged in the bottom plate, and the length direction of the bottom plate is perpendicular to the direction of the steel rail.

[0015] Further, two adjacent top plates are identical in structure, and the upper surfaces of the top plates are at the same level to provide effective support for the turnout iron pad.

[0016] Further, the top plate is a reverse trapezoidal wedge-shaped cavity.

[0017] Further, the bottom plate is provided with a ring-shaped wedge-shaped connecting hole corresponding to the top plate, and the outer edge of the reverse trapezoidal wedge-shaped profile of the top plate and the wall of the ring-shaped wedge-shaped hole of the bottom plate are mutually parallel inclined surfaces.

[0018] Further, the top surface of the top plate is higher than the top surface of the bottom plate, the upper end of the top surface of the rubber layer is connected with the top surface of the top plate, the lower end of the top surface of the rubber layer is connected with the top surface of the bottom plate, and the top surface of the rubber layer is upwardly concave.

[0019] Further, the bottom surface of the top plate is higher than the bottom surface of the bottom plate, the upper end of the bottom surface of the rubber layer is connected with the bottom surface of the top plate, the lower end of the bottom surface of the rubber layer is connected with the bottom surface of the bottom plate, and the bottom surface of the rubber layer is downwardly concave, thereby protecting the turnout damper when the vertical load is too large.

[0020] Compared with the prior art, the top plate segmented turnout damper has the following advantages:

[0021] The top plate segmented turnout damper can realize firm anchoring between the turnout damper and the sleeper and the turnout iron pad, and at the same time, smaller vertical stiffness can be realized, so that the turnout damper has higher damping effect.

[0022] The top plate segmented turnout damper in the application realizes overload protection and reduces the risk of permanent deformation of the rubber layer.

[0023] The top plate segmented turnout damper has lower assembly height, which improves the applicability of the damper to tunnels, existing line reconstruction and other sections with limited track line height, and at the same time, the damper has narrower width, which is particularly suitable for turnout area switch machines and other parts with limited sleeper width.

[0024] The top plate segmented turnout damper has smaller size, lower requirements for molds, processes, tooling and equipment, and is beneficial to production and transportation.

[0025] The top plate segmented turnout damper has stable vertical stiffness performance and longer service life, can have large lateral stiffness and better gauge retention capacity, and improves the safe driving performance of small curve radius sections. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the top plate segmented turnout vibration damper of the present invention.

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the top plate segmented turnout vibration damper described in this invention.

[0028] Among them, 1-top plate, 11-threaded through hole, 12-cavity, 2-rubber layer, 21-annular inclined surface, 3-bottom plate, 31-anchored waist-shaped through hole; 32-transverse retaining wall. Detailed Implementation

[0029] The present invention will now be further described in conjunction with the embodiments and accompanying drawings. Example 1

[0030] like Figure 1 and Figure 2 As shown, the segmented turnout vibration damper of this embodiment comprises three parts: two top plates 1, a bottom plate 3, and a rubber layer 2. The top plate 1 is disposed within the bottom plate 3 and is fixed together by the vulcanized rubber layer 2 between the top plate 1 and the bottom plate 3. The two adjacent top plates 1 have the same structure, and the upper surface of the top plate 1 is at the same horizontal plane, providing effective support for the turnout iron pad.

[0031] In this embodiment, the top plate 1 is a split structure, with adjacent top plates 1 connected to the bottom plate 3 via annular inclined surfaces 21. A transverse baffle 32 is provided at the bottom plate 3 adjacent to the annular inclined surfaces 21. The transverse baffle 32 and the top plate 1 are mutually constrained by rubber layers 2, with lateral stiffness provided by the lateral compression deformation of the two adjacent rubber layers 2. Alternatively, the transverse baffle 32 divides the bottom plate 3 into two continuous annular cavities, integrally formed with the bottom plate.

[0032] In this embodiment, the top plate 1 can be adjusted according to the actual product. The top plate 1 can be designed as two separate top plates 1, or as a single long top plate connected by its upper edge. The transverse retaining wall 32 structure can be embedded and locked in the bottom plate 3, and formed separately from the bottom plate 3. The upper surface of the top plate and the lower surface of the bottom plate can also be designed with rubber layers, that is, to simultaneously realize the function of rubber pads.

[0033] In this embodiment, the length of the middle transverse retaining wall 32 of the bottom plate 3 and the top plate 1 is designed according to the hole spacing of the iron pad of the turnout, so as to adjust the length of the bottom plate 3 and the position of the top plate 1 on the bottom plate 3; the angle of the connecting surface of the top plate 1 and the bottom plate 3 and the thickness of the rubber layer are designed according to the load bearing requirement of the turnout damper, so as to adjust the vertical stiffness and the lateral stiffness, i.e. the vertical damping performance and the track gauge maintaining capability; the number of the threaded through holes 11 on the top plate 1 and the size of the anchoring waist-shaped holes of the bottom plate 3 are designed according to the requirement of the lateral constraint force of the curved section of the turnout, so as to adjust the lateral load bearing capability of the turnout damper.

[0034] Both of the top plates 1 of this embodiment are provided with threaded through holes 11 for fixing with the iron pad of the turnout, and are fastened to the iron pad of the turnout by bolts; the bottom plate 3 is provided with anchoring waist-shaped through holes 31 for fixing with the sleeper. The top plate segmented turnout damper is the main damping component in the whole turnout damping fastener system. In this embodiment, the top plate segmented turnout damper adopts double top plates 1, which are symmetrically arranged in the bottom plate 3 with the length direction perpendicular to the direction of the rail; the two top plates 1 are of the same structure and have the same height, which provide effective support for the iron pad of the turnout.

[0035] The top plate segmented structure breaks through the limitation of the performance indicators such as the bonding strength of metal and rubber and lateral stiffness on the design of the product shape and structure, further reduces the structure height and width of the product, and improves the applicability of the product to the sections of the tunnel, the existing line reconstruction and the like which have limited track line height; in particular, the product is especially suitable for the turnout area switch machine and the like which have limited sleeper width; at the same time, the reduction of the height and width makes the product small in size, and reduces the requirements and investment of each link of production and manufacturing.

[0036] The bottom plate 3 is provided with a ring-shaped wedge-shaped connecting hole corresponding to the top plate 1, and the outer edge of the inverted trapezoidal wedge-shaped profile of the top plate 1 and the hole wall of the ring-shaped wedge of the bottom plate are mutually parallel inclined surfaces. The top surface of the top plate 1 is higher than the top surface of the bottom plate 3, the top end of the top surface of the rubber layer 2 is connected with the top surface of the top plate 1, the bottom end of the top surface of the rubber layer 2 is connected with the top surface of the bottom plate 3, and the top surface of the rubber layer 2 is concave upward. The bottom surface of the top plate 1 is higher than the bottom surface of the bottom plate 3, the top end of the bottom surface of the rubber layer 2 is connected with the bottom surface of the top plate 1, the bottom end of the bottom surface of the rubber layer 2 is connected with the bottom surface of the bottom plate 3, and the bottom surface of the rubber layer 2 is concave downward, which protects the turnout damper when the vertical load is too large. As another scheme, the top plate 1, the bottom plate 3 and the rubber layer 2 at the position of the transverse retaining wall 32 can also be mutually parallel vertical surfaces, which only provide lateral constraint effect for the turnout damper.

[0037] As an extended scheme of this embodiment, more rubber layers or rubber bosses are added to the bottom surface of the top plate to improve the overload protection function.

[0038] In order to enhance the anti-corrosion function of the turnout damper, the rubber coating area of the outer surface of the turnout damper can be increased.

[0039] In summary, the segmented turnout damper of the top plate in the application can realize firm anchoring between the turnout damper, the sleeper and the turnout iron pad, and at the same time realize smaller vertical stiffness, so as to ensure that the turnout damper has higher damping effect.

[0040] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A segmented turnout vibration damper with a top plate, comprising a top plate (1), wherein the top plate (1) is disposed in a bottom plate (3), and the top plate (1) and the bottom plate (3) are fixed together by a vulcanized rubber layer (2); characterized in that, The top plate (1) is a multi-part structure, and two adjacent top plates (1) are connected to the bottom plate (3) through annular inclined surfaces (21); a transverse baffle (32) is provided at the bottom plate (3) of the connecting surface of the adjacent annular inclined surfaces (21). The transverse baffle (32) and the top plate (1) are mutually constrained by rubber layers (2), and the transverse stiffness is provided by the lateral compression deformation of the two adjacent rubber layers (2); the transverse baffle (32) divides the bottom plate (3) into two continuous annular cavities and is integrally formed with the bottom plate; the top plate (1) is an inverted trapezoidal wedge-shaped cavity; The bottom plate (3) is provided with an annular wedge-shaped connecting hole corresponding to the top plate (1). The outer edge of the inverted trapezoidal wedge-shaped profile of the top plate (1) and the hole wall of the annular wedge-shaped connecting hole of the bottom plate are inclined surfaces that are parallel to each other.

2. The segmented turnout vibration damper according to claim 1, characterized in that, The transverse retaining wall (32) is formed separately and embedded in the base plate (3).

3. The segmented turnout vibration damper according to claim 2, characterized in that, The top plate (1) is symmetrically arranged inside the bottom plate (3), and the length direction of the bottom plate (3) is perpendicular to the rail direction.

4. The segmented turnout vibration damper with top plate according to claim 3, characterized in that, The two adjacent top plates (1) have the same structure, and the upper surface of the top plate (1) is at the same horizontal plane, providing effective support for the turnout iron pad plate.

5. The segmented turnout vibration damper according to claim 1, characterized in that, The top surface of the top plate (1) is higher than the top surface of the bottom plate (3). The upper end of the top surface of the rubber layer (2) is connected to the top surface of the top plate (1), and the lower end of the top surface of the rubber layer (2) is connected to the top surface of the bottom plate (3). The top surface of the rubber layer (2) is concave upward.

6. The segmented turnout vibration damper according to claim 5, characterized in that, The bottom surface of the top plate (1) is higher than the bottom surface of the bottom plate (3). The upper end of the bottom surface of the rubber layer (2) is connected to the bottom surface of the top plate (1), and the lower end of the bottom surface of the rubber layer (2) is connected to the bottom surface of the bottom plate (3). The bottom surface of the rubber layer (2) is concave downwards, which protects the turnout vibration damper when the vertical load is too large.

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