An assembled track structure with a large adjustment amount

Abstract

The present invention discloses an assembled track structure with a large adjustment amount, which is arranged on a lower foundation (1) and includes an adjustment support and a track slab (9); wherein, the lower foundation (1) is provided with embedded pipe sleeves; the track slab (9) is provided with embedded pipe sleeves; the adjustment support includes a pre-adjustable height cushion plate (2), a lower support plate (3) is arranged at the top of the pre-adjustable height cushion plate (2), a steel lining plate (5) is arranged at the top of the lower support plate (3), and an upper support plate (8) is arranged between the top of the steel lining plate (5) and the bottom of the track slab (9). Each component of the assembled track structure of the present invention is prefabricated, with high production and installation quality, fast on-site construction and assembly, reduced construction intensity, and good maintenance conditions. At the same time, the adjustment components of the assembled track structure are easy to operate, and the adjustment amount is large, and can be quickly replaced according to the actual needs on site, reducing the impact of track structure adjustment construction on train operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of railway tracks, and more specifically, relates to an assembled track structure with a large adjustment amount. Background Art

[0002] Ballastless track structures are increasingly being adopted in urban rail transit and national railways. Once a ballastless track structure is built, it is very difficult to change its geometric position. The terrain of many current sections is relatively complex, making construction difficult. When there are situations such as the dislocation of an active fault zone, construction errors in foundation engineering, uneven settlement of the subgrade, and longitudinal deformation of the bridge foundation, it is necessary to adjust the track structure to meet the requirements of track irregularities.

[0003] Currently, the main way to adjust the track structure is through the adjustment of the fastener system. The maximum height adjustment amount of commonly used special fasteners at home and abroad generally does not exceed 60 mm. Such an adjustment amount far cannot meet the requirements of some working conditions with harsh environments. For example, the dislocation of an active fault zone, the longitudinal displacement of the main longitudinal beam of a steel truss bridge, etc.

[0004] If no special measures are taken or improper measures are taken for the track structure in the areas of the dislocation of an active fault zone and the longitudinal displacement of the main longitudinal beam of a steel truss bridge, once a large displacement occurs in a short time, the track structure will be damaged on a large scale, resulting in the inability to continue operation. It can only be demolished and rebuilt. And due to site and construction technology limitations, the repair time is long, the engineering difficulty is large, the repair cost is high, and it is impossible to quickly meet the traffic conditions. Summary of the Invention

[0005] Aiming at the above defects or improvement requirements of the prior art, the present invention provides an assembled track structure with a large adjustment amount. All components are prefabricated, with high production and installation quality, material saving, fast on-site construction and assembly, reduced construction intensity, and better maintenance conditions. At the same time, the adjustment components of the assembled track structure are easy to operate, and the adjustment amount is large, and can be quickly replaced according to the actual on-site needs, reducing the impact of track structure adjustment construction on train operation.

[0006] To achieve the above object, the present invention provides an assembled track structure with a large adjustment amount, which is arranged on a lower foundation and includes a lower foundation, an adjustment support, and a track slab; wherein,

[0007] Embedded pipe sleeves are provided on both the top surface and the bottom surface of the track slab, and rails are also provided on its top surface;

[0008] The adjusting support is arranged between the lower foundation and the track slab. The adjusting support includes a rectangular plate-shaped pre-adjusting cushion plate arranged on the top surface of the lower foundation. The vertical height of the adjusting support is adjusted by adjusting the pre-adjusting cushion plate. A lower support plate in the shape of a rectangular concave platform is arranged on the top surface of the pre-adjusting cushion plate. A steel lining plate in the shape of a rectangular convex platform is arranged on the top surface of the lower support plate. A rectangular plate-shaped upper support plate is arranged between the top surface of the steel lining plate and the bottom end surface of the track slab. A longitudinal rectangular groove is arranged on one side surface of the upper support plate, and a side sliding plate is arranged on the inner side surface of the longitudinal rectangular groove to provide guidance for the longitudinal displacement of the adjusting support.

[0009] Furthermore, circular through holes are arranged at the four corner positions of the upper support plate, and it is fixed to the bottom end surface of the track slab through upper support fixing bolts.

[0010] Furthermore, the side sliding plate is made of a material with a low friction coefficient and high strength to reduce the frictional resistance during the longitudinal adjustment of the assembled track structure.

[0011] Furthermore, an oval-shaped shallow groove is arranged on the top surface of the steel lining plate, and an oval-shaped top sliding plate is arranged inside the oval-shaped shallow groove. The top sliding plate is made of a material with a low friction coefficient and high strength to reduce the frictional resistance during the longitudinal adjustment of the assembled track structure.

[0012] Furthermore, a cuboid-shaped rubber cushion plate is arranged inside the rectangular concave platform of the lower support plate to absorb the vibration generated by the steel lining plate and isolate the steel lining plate and the lower support plate.

[0013] Furthermore, a seal rubber ring in the shape of a loop is arranged at the top of the rectangular concave platform of the lower support plate to ensure the sealing of the rectangular concave platform of the lower support plate.

[0014] Furthermore, a pointer for measuring the position is arranged at the middle position of one side surface of the lower support plate.

[0015] Furthermore, circular through holes are arranged at the four corner positions of both the pre-adjusting cushion plate and the lower support plate, and the pre-adjusting cushion plate and the lower support plate are fixed to the lower track foundation through lower support fixing bolts.

[0016] Furthermore, the size of the rectangular concave platform of the lower support plate conforms to the size of the rectangular convex platform of the steel lining plate to ensure the sealing inside the rectangular concave platform of the lower support plate.

[0017] Furthermore, all components of the assembled track structure with a large adjustment amount are assembled products.

[0018] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the following beneficial effects can be achieved:

[0019] (1) Each component of the prefabricated track structure of the present invention is prefabricated, with high production and installation quality, material saving, fast on-site construction and assembly, reduced construction intensity, and good maintenance conditions. At the same time, the adjustment components of the prefabricated track structure are easy to operate and have a large adjustment amount, and can be quickly replaced according to the actual on-site needs, reducing the impact of track structure adjustment construction on train operation.

[0020] (2) In the prefabricated track structure of the present invention, the upper bearing plate and the sliding plate on the iron lining plate form a friction pair with a relatively low friction coefficient, realizing a large longitudinal adjustment amount of the track structure and being able to adapt to a large longitudinal displacement of the track subgrade. At the same time, the height of the track slab can be adjusted by adjusting the height of the pre-adjustable cushion plate, thereby ensuring that two adjacent track slabs are in the same horizontal plane.

[0021] (3) In the prefabricated track structure of the present invention, the rubber cushion plate is arranged between the concave platform of the lower bearing plate and the iron lining plate, and the rubber cushion plate provides buffering and vibration reduction in the vertical direction of the track structure, improving the safety and comfort of train operation. Description of the Drawings

[0022] Figure 1 is a perspective view of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0023] Figure 2 is a front view of the overall structure of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0024] Figure 3 is a perspective view of the internal structure of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0025] Figure 4 is a top view of the track slab 9 of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0026] Figure 5 is a bottom view of the track slab 9 of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0027] Figure 6 is an exploded perspective view of the support of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0028] Figure 7 is an exploded front view of the support of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0029] Figure 8 is a schematic diagram of the overall structure of the support of a prefabricated track structure with a large adjustment amount according to an embodiment of the present invention;

[0030] Figure 9Front view of a support for an assembled track structure with a large adjustment amount according to an embodiment of the present invention;

[0031] Figure 10 Cross-sectional view of a support for an assembled track structure with a large adjustment amount according to an embodiment of the present invention;

[0032] Figure 11 Side view of an assembled track structure with a large adjustment amount in a normal state according to an embodiment of the present invention;

[0033] Figure 12 Side view of an assembled track structure with a large adjustment amount in a state of longitudinal deformation according to an embodiment of the present invention;

[0034] Figure 13 Side view of an assembled track structure with a large adjustment amount after longitudinal adjustment according to an embodiment of the present invention;

[0035] Figure 14 Side view of an assembled track structure with a large adjustment amount in a state of vertical deformation according to an embodiment of the present invention;

[0036] Figure 15 Side view of an assembled track structure with a large adjustment amount after vertical adjustment according to an embodiment of the present invention.

[0037] In all the drawings, the same reference numerals denote the same technical features, specifically: 1 - lower foundation of the track, 2 - pre - height - adjusting pad, 3 - lower support plate, 4 - rubber pad, 5 - steel liner, 6 - sealing rubber ring, 7 - pointer, 8 - upper support plate, 9 - track slab, 10 - rail, 11 - side slide plate, 12 - top slide plate, 13 - lower support fixing bolt, 14 - upper support fixing bolt. Detailed implementation manners

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, the present invention discloses an assembled track structure with a large adjustment amount. The assembled track structure with a large adjustment amount is arranged on a lower foundation. The assembled track structure includes a track adjustment support and a track slab 9. The adjustment support is arranged between the lower foundation 1 of the track and the track slab 9, providing stable support for the lower foundation 1 at its top to ensure the stability of the rail 10. At the same time, after longitudinal and / or vertical deformation occurs between the lower foundation 1 of the track and the track slab 9, flexible and reliable adjustment can be carried out through this adjustment support, thereby ensuring the flatness of the entire track slab 9 and ensuring the normal operation of the train. Each component of the assembled track structure of the present invention is prefabricated, with high production and installation quality, material saving, fast on-site construction and assembly, reduced construction intensity, and good maintenance conditions. At the same time, the adjustment components of the assembled track structure are easy to operate and have a large adjustment amount, and can be quickly replaced according to actual on-site needs, reducing the impact of track structure adjustment construction on train operation.

[0040] As Figures 1 to 5 shown, the top end surface of the lower foundation 1 of the track is a rectangular plane, and embedded sleeves are arranged on this rectangular plane to facilitate the installation of the adjustment support. The track slab 9 is an overall cuboid plate-shaped component, and embedded sleeves are arranged on both the top end surface and the bottom end surface of the track slab 9. The embedded sleeves on its top end surface are arranged in four columns along the longitudinal direction for the fixed installation of the rail 10; the embedded sleeves on its bottom end surface are evenly arranged at the four corners of this cuboid plate, facilitating the fixed connection between the track slab 9 and the adjustment support, and ensuring that the load of the train can be stably transmitted to the lower foundation 1 of the track.

[0041] As Figure 3 、 Figures 6 to 10As shown, the adjustment support is provided between the lower track foundation 1 and the track slab 9. The adjustment support connects the lower track foundation 1 and the track slab 9 and transfers the load borne by the track slab 9 to the lower track foundation 1. The adjustment support includes a pre-adjustment heightening pad 2, a lower support plate 3, a rubber pad 4, a steel lining plate 5, a sealing rubber ring 6, a pointer 7, an upper support plate 8, a side sliding plate 11, a top sliding plate 12, a lower support fixing bolt 13 and an upper support fixing bolt 14. Among them, the lower support plate 3, the steel lining plate 5 and the upper support plate 8 together form the main support structure of the adjustment support. The bottom of the lower support plate 3 is a rectangular plate with circular through holes at the four corners, and its top is a rectangular concave platform; the steel lining plate 5 is an overall rectangular convex platform, and the size of its convex platform fits the size of the concave platform of the lower support plate 3. At the same time, an oval shallow groove for installing the top sliding plate 12 is provided on the top end surface of the steel lining plate 5; the upper support plate 8 is an overall rectangular plate with circular through holes at the four corners. The upper support plate 8 is fixed to the bottom end surface of the track slab 9 through the upper support fixing bolt 14, and a rectangular groove is provided along the longitudinal direction on the bottom end surface of the rectangular plate to facilitate cooperation with the steel lining plate 5. The pre-adjustment heightening pad 2 is an overall rectangular plate-like structure with round holes at the four corners. The pre-adjustment heightening pad 2 is arranged on the top end surface of the lower track foundation 1. The lower support plate 3, the pre-adjustment heightening pad 2 and the lower track foundation 1 are fixedly connected into a whole through the lower support fixing bolt 13 to ensure the overall stability of the assembled track structure when bearing the load and vibration transmitted by the components on its top. At the same time, when the assembled track structure needs to be adjusted with a large height adjustment amount, the track slab 9 can be first jacked up with a jack, and then the lower support fixing bolt 13 is removed, and a pre-adjustment heightening pad 2 with a suitable thickness is replaced to adjust the vertical height of the assembled track structure, ensuring that adjacent track slabs 9 can be in the same plane, ensuring the normal operation of the train, and thus improving the applicability and reliability of the assembled track structure.

[0042] In addition, a rectangular rubber cushion plate 4 is provided inside the rectangular concave platform of the lower support plate 3. On the one hand, the rubber cushion plate 4 can prevent the steel lining plate 5 from directly contacting the lower support plate 3. On the other hand, it can absorb the vibration generated by the train operation and increase the service life of the steel lining plate 5 and the lower support plate 3. A loop-shaped sealing rubber ring 6 around the boss of the steel lining plate 5 is provided at the top surface position of the rectangular concave platform of the lower support plate 3. When the lower support plate 3 and the steel lining plate 5 are matched, the sealing rubber ring 6 can seal them, provide a good working environment for the rubber cushion plate 4, extend the service life of the rubber cushion plate 4, and thus improve the economy and applicability of the assembled track structure. At the same time, a pointer 7 is provided on one side surface of the upper support plate 8. The pointer 7 is located at the middle position of this side surface during installation and provides real-time marking for its adjustment during longitudinal adjustment, improving the maintenance efficiency of the railway maintenance department. A top surface slide plate 12 is provided inside the elliptical shallow groove on the top surface of the steel lining plate 5. The top surface slide plate 12 is an elliptical thin plate as a whole. Rectangular plate-shaped side surface slide plates 11 are provided on the two inner walls of the longitudinal rectangular groove at the bottom end surface of the upper support plate 8. The top surface slide plate 12 and the side surface slide plates 11 are both made of materials with low friction coefficient and high strength, reducing the frictional resistance during the longitudinal adjustment of the assembled track structure, and thus improving the convenience and applicability of the assembled track structure.

[0043] The working principle and specific implementation steps of an assembled track structure with a large adjustment amount according to the present invention are as follows:

[0044] The lower track foundation 1 requires a large height adjustment amount: As Figure 11 , Figure 12 and Figure 13 shown, first, the removal operation of the lower support fixing bolts 13 of the adjustment support is carried out. After the removal is completed, the track slab 9 is lifted by a jack. Then, the lower support plate 3 and the pre-adjustable height cushion plate 2 are removed. The thickness of the pre-adjustable height cushion plate 2 is increased or decreased until the adjacent two track slabs 9 are kept in the same horizontal plane. After the adjustment is completed, the lower support plate 3 and the pre-adjustable height cushion plate 2 are reinstalled to complete the adjustment of the large height adjustment amount of the track.

[0045] The lower track foundation 1 requires a large longitudinal adjustment amount: Figure 11 , Figure 14 and Figure 15As shown in the figure, side sliding plates 11 are provided on both sides of the bottom end face of the upper bearing plate 8. At the same time, an oval top sliding plate 12 is provided on the top end face of the steel liner 5. When a large longitudinal adjustment amount is required for the track lower foundation 1, the side sliding plates 11 and the top sliding plate 12 can assist the upper bearing plate 8 to move longitudinally, thereby reducing the influence of the longitudinal displacement on the rails and fastener systems of the track lower foundation 1. After the longitudinal displacement adjustment is completed, the longitudinal displacement can be read through the pointer 7 provided on the side of the upper bearing plate 8, so as to timely master the track structure adjustment information and facilitate maintenance.

[0046] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembled track structure with a large adjustment amount is provided on a lower foundation (1). It is characterized in that it includes an adjustment support and a track slab (9); among them, embedded pipe sleeves are provided on both the top surface and the bottom surface of the track slab (9), and a steel rail (10) is also provided on its top surface; The adjustment support is arranged between the lower foundation (1) and the track slab (9). The adjustment support includes a rectangular plate-shaped pre-adjustable height pad (2) arranged on the top surface of the lower foundation (1). Through the adjustment of the pre-adjustable height pad (2), the vertical height of the adjustment support is adjusted. A rectangular concave platform-shaped lower support plate (3) is provided on the top surface of the pre-adjustable height pad (2). A rectangular convex platform-shaped steel lining plate (5) is provided on the top surface of the lower support plate (3). A rectangular plate-shaped upper support plate (8) is provided between the top surface of the steel lining plate (5) and the bottom end surface of the track slab (9); A longitudinal rectangular groove is provided on one side surface of the upper support plate (8), and a side sliding plate (11) is provided on the inner side surface of the longitudinal rectangular groove to provide guidance for the longitudinal displacement of the adjustment support. The side sliding plate (11) is made of a material with a low friction coefficient and high strength to reduce the frictional resistance during the longitudinal adjustment of the assembled track structure; An oval-shaped shallow groove is provided on the top surface of the steel lining plate (5), and an oval-shaped top sliding plate (12) is provided inside the oval-shaped shallow groove. The top sliding plate (12) is made of a material with a low friction coefficient and high strength to reduce the frictional resistance during the longitudinal adjustment of the assembled track structure.

2. The assembled track structure with a large adjustment amount according to claim 1, It is characterized in that circular through holes are provided at the four corners of the upper support plate (8), and it is fixed to the bottom end surface of the track slab (9) through upper support fixing bolts (14).

3. The assembled track structure with a large adjustment amount according to claim 1, It is characterized in that a cuboid-shaped rubber pad (4) is provided inside the rectangular concave platform of the lower support plate (3) to absorb the vibration generated by the steel lining plate (5) and isolate the steel lining plate (5) and the lower support plate (3).

4. The assembled track structure with a large adjustment amount according to claim 3, It is characterized in that a ring-shaped sealing rubber ring (6) is provided at the top of the rectangular concave platform of the lower support plate (3) to ensure the sealing of the rectangular concave platform of the lower support plate (3).

5. The assembled track structure with a large adjustment amount according to claim 1, It is characterized in that a pointer (7) for measuring the position is provided at the middle position of one side surface of the lower support plate (3).

6. The assembled track structure with a large adjustment amount according to claim 1, It is characterized in that circular through holes are provided at the four corners of the pre-adjustable height pad (2) and the lower support plate (3), and the pre-adjustable height pad (2) and the lower support plate (3) are fixed to the lower track foundation (1) through lower support fixing bolts (13).

7. The assembled track structure with a large adjustment amount according to claim 1, It is characterized in that The rectangular concave platform size of the lower support plate (3) conforms to the rectangular convex platform size of the steel lining plate (5) to ensure the sealing performance inside the rectangular concave platform of the lower support plate (3).

8. A prefabricated track structure with a large adjustment amount according to any one of claims 1-7, characterized in that, all components of the prefabricated track structure with a large adjustment amount are prefabricated parts.

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