An assembled damping track system for urban rail transit

Abstract

The utility model discloses an assembly type damping track system for urban rail transit, which comprises: a cushion layer, which is arranged on the ground in a circular arc shape; a track plate, which is horizontally arranged above the cushion layer and vertically penetrates the middle position to be provided with a pouring channel, the lower end of the pouring channel is arranged in a straight cylinder shape, and the upper end is arranged in a funnel shape that gradually expands from bottom to top; a damping sleeve, which is arranged in an open upper end shape and sleeved on the outside of the track plate; and a filling layer, which is arranged between the cushion layer and the damping sleeve, and an integral pouring column that fills the pouring channel is integrally poured and formed on the filling layer. The utility model coats a layer of damping sleeve on the outside of the prefabricated track plate, integrates the damping sleeve and the track plate, reduces the stiffness of the damping system, directly transmits the acting force, maximally plays the damping performance of the track, and directly assembles the track plate and the damping sleeve in the factory without the need of processing at the construction site, thereby improving the construction efficiency and the construction convenience.

Description

Technical Field

[0001] This utility model relates to the field of rail transit, and in particular to a prefabricated vibration-damping track system for urban rail transit. Background Technology

[0002] Urban rail transit refers to a rail transportation system that operates in cities and serves the daily travel needs of urban residents. It has advantages such as large capacity, high speed, safety and punctuality, energy saving, pollution reduction, and alleviation of urban traffic congestion. It is the backbone of public transportation in modern metropolitan areas.

[0003] Traditional urban rail transit track slabs are divided into two types: prefabricated and cast-in-place. Prefabricated track slabs have become the mainstream form of urban rail transit because they can be produced in factories, which not only ensures controllable production quality but also improves construction efficiency.

[0004] Currently, during the construction of assembled track slabs, it is usually necessary to first lay a layer of vibration damping pads on the subbase before installing the assembled track slabs. However, this vibration damping method results in a large stiffness of the entire vibration damping system, a high system frequency, and a small ratio to the vibration source frequency, which cannot maximize the vibration damping performance of the track and needs to be improved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a prefabricated vibration-damping track system for urban rail transit, which can maximize the vibration reduction performance of the track.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a prefabricated vibration-damping track system for urban rail transit, comprising: The subbase, with a circular arc cross-section, is placed on the ground. The track slab is horizontally positioned above the pad layer, and a pouring channel is vertically inserted through its center. The lower end of the pouring channel is cylindrical, and the upper end is funnel-shaped, gradually widening from bottom to top. The vibration damping sleeve is designed with an open top and is fitted over the outside of the track slab, with the upper surface of the vibration damping sleeve flush with the upper surface of the track slab. A filling layer is provided between the padding layer and the vibration damping sleeve, and a casting column that fills the casting channel is integrally cast on the filling layer.

[0007] In a preferred embodiment, the present invention can be further configured such that: a locking ring is provided on the upper inner wall of the vibration damping sleeve, and a locking groove is provided on the outer wall of the track plate for the locking ring to be inserted.

[0008] In a preferred embodiment, the present invention can be further configured such that the bottom wall of the vibration damping sleeve is wavy.

[0009] In a preferred embodiment, the present invention can be further configured such that: the upper end surface of the track plate is provided with a groove surrounding the upper end of the casting channel, and the upper end of the casting column is provided with a retaining ring embedded in the groove.

[0010] In a preferred embodiment, the present invention can be further configured such that: the vibration damping sleeve is provided with a rubber sleeve embedded in the casting channel and wrapping the casting column.

[0011] In a preferred embodiment, the present invention can be further configured such that: a washer located within the groove is provided at the upper end of the rubber sleeve.

[0012] In a preferred embodiment, the present invention can be further configured such that: the rubber sleeve includes a bottom tube and a top tube, the bottom tube is integrally formed on the vibration damping sleeve, and the top tube is inserted into the casting channel from top to bottom.

[0013] In a preferred embodiment, the present invention can be further configured such that: the upper end of the bottom tube is provided with an outer edge, the lower end of the top tube is provided with an inner edge, and the outer edge and the inner edge are threadedly connected.

[0014] In summary, this utility model has the following beneficial effects: 1. By covering the outside of the prefabricated track slab with a vibration damping sleeve, the vibration damping sleeve and the track slab are integrated, reducing the stiffness of the vibration damping system and allowing the force to be transmitted directly, maximizing the vibration damping performance of the track. At the same time, the track slab and the vibration damping sleeve can be assembled directly in the factory without the need for on-site processing, improving construction efficiency and convenience. 2. Cast-in-place columns are used to fix the track slab by casting it into shape. The cast-in-place columns, which are thicker at the top and thinner at the bottom, can fix the track slab and solve the problems of vertical floating and lateral drift of the track slab. 3. By installing rubber sleeves between the casting columns and the casting channel, lateral vibration reduction and buffering are achieved, and three-dimensional vibration resistance is completed, maximizing the vibration reduction performance of the track. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment; Figure 2 This is a schematic diagram of the connection relationship in the embodiment; Figure 3 This is a schematic diagram of the track slab structure in an embodiment; Figure 4 This is a schematic diagram of the vibration damping sleeve in the embodiment; Figure 5 This is a schematic diagram of the structure of the rubber sleeve in the embodiment.

[0016] Reference numerals: 1. Subbase; 2. Track slab; 21. Pouring channel; 22. Locking groove; 23. Groove; 3. Vibration damping sleeve; 31. Locking ring; 4. Filling layer; 41. Pouring column; 42. Clamping ring; 5. Rubber sleeve; 51. Washer; 52. Bottom pipe; 53. Top pipe; 54. Outer edge; 55. Inner edge. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, a prefabricated vibration-damping track system for urban rail transit includes a pad layer 1, a track slab 2, a vibration-damping sleeve 3, and a filling layer 4.

[0019] like Figure 2 , Figure 3 As shown, the subbase 1 has an arc-shaped cross-section and is set on the ground. The track slab 2 is set horizontally above the subbase 1, and a pouring channel 21 is vertically inserted through the middle. The lower end of the pouring channel 21 is set in a straight cylinder shape, and the upper end is set in a funnel shape that gradually expands from bottom to top.

[0020] like Figure 2 , Figure 4 As shown, the vibration damping sleeve 3 is open at the top and is fitted over the outside of the track slab 2, with the upper surface of the vibration damping sleeve 3 flush with the upper surface of the track slab 2. The bottom wall of the vibration damping sleeve 3 is wavy to achieve vertical seismic resistance.

[0021] like Figure 3 , Figure 4 As shown, a locking ring 31 is provided on the upper inner wall of the vibration damping sleeve 3, and a locking groove 22 is provided on the outer wall of the track plate 2 for the locking ring 31 to be inserted, so as to realize the self-locking fixation of the track plate 2 and the vibration damping sleeve 3 and increase the connection stability of the two.

[0022] like Figure 2 , Figure 3 , Figure 4 As shown, the filling layer 4 is filled between the pad layer 1 and the vibration damping sleeve 3. The filling layer 4 is integrally cast with a casting column 41 that fills the casting channel 21. Therefore, the casting column 41, which is thicker at the top and thinner at the bottom, can fix the track plate 2 and solve the problems of vertical floating and lateral drifting of the track plate 2.

[0023] like Figure 2 , Figure 3 , Figure 4As shown, the upper surface of the track slab 2 is provided with a groove 23 surrounding the upper end of the casting channel 21, and the upper end of the casting column 41 is provided with a retaining ring 42 embedded in the groove 23. Therefore, after casting, the track slab 2 can be pressed and fixed, increasing the stability of the track slab 2.

[0024] Therefore, by covering the prefabricated track slab 2 with a vibration damping sleeve 3, the vibration damping sleeve 3 and the track slab 2 are integrated, reducing the stiffness of the vibration damping system and allowing the force to be transmitted directly, thus maximizing the vibration damping performance of the track. At the same time, the track slab 2 and the vibration damping sleeve 3 can be directly assembled in the factory without on-site processing, improving construction efficiency and convenience.

[0025] like Figure 2 , Figure 3 , Figure 4 As shown, the vibration damping sleeve 3 is provided with a rubber sleeve 5 embedded in the pouring channel 21 and wrapping the pouring column 41. The upper end of the rubber sleeve 5 is provided with a washer 51 located in the groove 23, and the retaining ring 42 presses the washer 51.

[0026] Therefore, by setting a rubber sleeve 5 between the casting column 41 and the casting channel 21, vibration reduction and buffering in the lateral direction are achieved, and vibration resistance in the three-dimensional direction is completed, maximizing the vibration reduction performance of the track.

[0027] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the rubber sleeve 5 includes a bottom tube 52 and a top tube 53. The bottom tube 52 is integrally formed on the vibration damping sleeve 3, and the top tube 53 is inserted into the pouring channel 21 from top to bottom. The upper end of the bottom tube 52 is provided with an outer edge 54, and the lower end of the top tube 53 is provided with an inner edge 55. The outer edge 54 and the inner edge 55 are threaded together.

[0028] Therefore, by setting up a modular rubber sleeve 5, the bottom of the rubber sleeve 5 can be smoothly inserted into the pouring channel 21, and the upper part can be screwed and fixed at the bottom position, so as to realize the rapid assembly and fixing of the rubber sleeve 5, and improve the assembly convenience and assembly efficiency.

[0029] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A prefabricated vibration-damping track system for urban rail transit, characterized in that: include: The subbase (1) has a circular arc cross-section and is placed on the ground; The track plate (2) is horizontally positioned above the pad layer (1), and a pouring channel (21) is vertically inserted through the middle. The lower end of the pouring channel (21) is cylindrical, and the upper end is funnel-shaped, gradually expanding from bottom to top. The vibration damping sleeve (3) is set with an open top and is sleeved on the outside of the track plate (2). The upper surface of the vibration damping sleeve (3) is flush with the upper surface of the track plate (2). A filling layer (4) is provided between the pad layer (1) and the vibration damping sleeve (3). A casting column (41) that fills the casting channel (21) is integrally cast on the filling layer (4).

2. The prefabricated vibration-damping track system for urban rail transit according to claim 1, characterized in that: The upper inner wall of the damping sleeve (3) is provided with a locking ring (31), and the outer wall of the track plate (2) is provided with a locking groove (22) for the locking ring (31) to be inserted.

3. A prefabricated vibration-damping track system for urban rail transit according to claim 2, characterized in that: The bottom wall of the vibration damping sleeve (3) is wavy.

4. The prefabricated vibration-damping track system for urban rail transit according to claim 1, characterized in that: The upper end of the track plate (2) is provided with a groove (23) surrounding the upper end of the casting channel (21), and the upper end of the casting column (41) is provided with a retaining ring (42) embedded in the groove (23).

5. A prefabricated vibration-damping track system for urban rail transit according to claim 4, characterized in that: The vibration damping sleeve (3) is provided with a rubber sleeve (5) that is embedded in the pouring channel (21) and wraps around the pouring column (41).

6. A prefabricated vibration-damping track system for urban rail transit according to claim 5, characterized in that: The upper end of the rubber sleeve (5) is provided with a washer (51) located in the groove (23).

7. A prefabricated vibration-damping track system for urban rail transit according to claim 6, characterized in that: The rubber sleeve (5) includes a bottom tube (52) and a top tube (53). The bottom tube (52) is integrally formed on the vibration damping sleeve (3), and the top tube (53) is inserted into the pouring channel (21) from top to bottom.

8. A prefabricated vibration-damping track system for urban rail transit according to claim 7, characterized in that: The upper end of the bottom tube (52) is provided with an outer edge (54), and the lower end of the top tube (53) is provided with an inner edge (55). The outer edge (54) and the inner edge (55) are threadedly connected.

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