Modular supporting device for overhead railway

Abstract

The invention relates to the technical field of railway construction, in particular to a modularized supporting device for railway overhead. The device comprises a plurality of buttresses, the buttress comprises a bottom plate, a top plate and a supporting column arranged between the bottom plate and the top plate, and the two ends of the supporting column are detachably connected with the bottom plate and the top plate respectively. A connecting plate extending upwards is arranged on at least one side edge of the bottom plate, a connecting plate extending downwards is arranged on at least one side edge of the top plate, connecting holes are formed in the connecting plates, and the two adjacent buttresses are detachably connected in the horizontal direction by penetrating fasteners through the corresponding connecting holes in the two adjacent buttresses. Therefore, a supporting system meeting different span requirements is formed; the multiple buttresses are stacked in the vertical direction, so that the requirement for the supporting height is met. The technical problems that in the prior art, cast-in-place plain concrete temporary buttress construction consumes long time and is difficult to complete in a railway skylight point, and the railway operation span requirement is disturbed are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of railway construction technology, and in particular to a modular support device for railway overhead lines. Background Technology

[0002] The construction of an underpass under an existing railway is a technically complex project. Its core is to provide temporary support for the railway track through a reliable track reinforcement system (such as overhead pile supports and D-type temporary beams) while ensuring the absolute safety of the railway line and uninterrupted operation, thereby creating a safe space for the jacking or excavation of the main structure.

[0003] Currently, when using the jacking method for construction, constructing overhead support piles is a crucial step in railway line reinforcement. The typical construction process is as follows: First, at predetermined locations on both sides of the railway line, support pits are excavated on-site, and temporary plain concrete supports are poured. Then, D-shaped temporary beams supporting the railway tracks are erected on these plain concrete supports, forming temporary supports. Next, within the safe space protected by the temporary beams, drilling of the support piles, installation of the reinforcing cage, and concrete pouring are carried out. After the support piles reach their design strength, the temporary beams are transferred from the temporary supports to the permanent support piles.

[0004] However, this existing method, which relies on on-site casting of plain concrete temporary supports, has revealed the following problems in practical applications: 1. Low construction efficiency, severely restricting railway operation. The casting of plain concrete supports, including the arrival of concrete mixer trucks, casting, and curing, usually requires applying for a power outage on the railway overhead contact line and must be completed within extremely limited railway "maintenance windows" (usually only two hours). On-site excavation of the foundation pit and concrete construction are time-consuming, with tight coordination between procedures, which not only puts enormous pressure on construction organization but also frequently encroaches on or prolongs the time for slow-moving and line closures, directly disrupting railway transportation order and increasing operational safety risks and scheduling costs. 2. Inability to recycle materials, leading to resource waste and increased costs. As a one-time use temporary structure, plain concrete supports lose their function after the permanent support piles are built. These supports are either abandoned and buried underground, forming construction waste, or require additional labor and machinery for demolition and removal. This results in a serious waste of concrete materials, manpower, and machinery resources, which is inconsistent with the concept of green construction and also directly increases the construction cost of the project. Summary of the Invention

[0005] This invention provides a modular support device for railway overhead lines to solve the technical problem that the construction of temporary supports made of plain concrete in the field is time-consuming and difficult to complete within the railway maintenance window, thus interfering with railway operation.

[0006] To solve the above problems, the modular support device for railway overhead lines provided by this invention adopts the following technical solution:

[0007] A modular support device for overhead railways includes several piers; The support includes a base plate, a top plate, and a support column located between the base plate and the top plate, with both ends of the support column being detachably connected to the base plate and the top plate, respectively. At least one side of the base plate is provided with an upwardly extending connecting plate, and at least one side of the top plate is provided with a downwardly extending connecting plate. The connecting plates are provided with connecting holes. By passing fasteners through the corresponding connecting holes on two adjacent supports, two adjacent supports are detachably connected in the horizontal direction to form a support system that adapts to different span requirements. Multiple supports are stacked in the vertical direction to meet the support height requirements.

[0008] The advantages of the modular support device for railway overhead lines provided by this invention are: 1. The support pier consists of a detachable base plate, top plate, and support column. It is a prefabricated modular structure that is easy to transport and assemble. It eliminates the need for time-consuming on-site concrete mixing, pouring, and curing. The assembly of the various components of the support pier and the assembly between multiple support piers can be completed within the railway maintenance window. The process is simple and time-saving, making it suitable for short-term operation requirements during maintenance windows. It also eliminates the need to apply for long-term power outages of the overhead contact system, avoiding disruption to railway operation time, significantly reducing interference with railway transportation order, and reducing construction organization pressure and operational safety risks.

[0009] 2. By providing an upwardly extending connecting plate on at least one side of the base plate and a downwardly extending connecting plate on at least one side of the top plate, and by creating connecting holes on the connecting plates, adjacent supports can be horizontally and detachably connected by fasteners passing through the corresponding connecting holes. When the span requirement is small, a single support can be used directly as a support unit; when the spacing is large, two or more supports can be selected according to the actual spacing requirements and spliced ​​together with horizontal connecting plates and fasteners to form an overall support system; the number of splices can be increased or decreased as needed, without the need for customized adjustment of the support specifications themselves, thus accurately adapting to the differences in span requirements of different lines and effectively solving the technical problem of requiring targeted adjustment of support component specifications in existing technologies.

[0010] 3. The supports adopt a modular design with a regular individual structure. The support columns are detachably connected to the base and top plates, and multiple supports can be stacked vertically. When the support height is low, a single support can meet the requirements; when the support height is high, multiple supports are stacked layer by layer vertically, utilizing the flat structure of the support base and top plates to achieve a tight fit. The stacked structure forms a stable support through the load-bearing transmission of the support columns. The number of stacking layers can be flexibly set according to the actual height requirements (such as 2 layers, 3 layers or more), without the need to replace supports of different height specifications, thus fully adapting to the diverse height conditions of railway overhead construction.

[0011] In summary, the present invention effectively solves the technical problems of the long construction time of on-site pouring of plain concrete temporary supports in the prior art, which is difficult to complete within the railway maintenance window and interferes with the railway operation span requirements.

[0012] Furthermore, the corners of the bottom plate and the top plate are provided with corresponding positioning holes, so as to assist the positioning of the support blocks when stacked vertically by installing positioning elements in the positioning holes.

[0013] Beneficial effects: By opening corresponding positioning holes at the corners of the base plate and the top plate, the positioning and fitting of the upper and lower supports can be quickly completed through the corresponding positioning holes and positioning parts at the corners of the base plate and the top plate. There is no need for repeated manual calibration and alignment, which can significantly shorten the stacking operation time, meet the needs of efficient construction within the skylight, reduce the intensity of manual operation, and avoid problems such as horizontal offset and center misalignment during stacking. It ensures that the columns and bearing surfaces of the upper and lower supports are accurately aligned, ensures the stress balance of the overall support system, and avoids the risk of local stress concentration caused by positioning deviation.

[0014] Furthermore, there are multiple support pillars, which are respectively arranged at the corners and / or the center of the base plate.

[0015] Beneficial effects: Multiple supports distribute the train load and the weight of the overhead system transmitted by the roof slab, avoiding concentrated stress at a single point; the corner supports can strengthen the piers' resistance to overturning and horizontal displacement, while the supports in the center of the slab can fill the gaps in the central support, reducing the bending deformation of the bottom / top slab caused by the load, forming a balanced force structure with the corners resisting lateral pressure and the center bearing pressure in coordination, ensuring that the support system is stable and does not fail under complex loads.

[0016] Furthermore, the bottom and top surfaces of the support column are both equipped with sealing plates, and the sealing plates are provided with mounting holes. The bottom plate and the top plate are provided with corresponding mounting holes, so as to connect the bottom plate / top plate and the sealing plate through the connecting piece that passes through the bottom plate / top plate and the sealing plate.

[0017] Beneficial effects: The sealing plate is fixed to both ends of the support in advance, and the position of the installation hole corresponds precisely to the installation hole of the bottom / top plate. During manual assembly, there is no need to repeatedly calibrate the relative position of the support and the bottom / top plate, which can quickly achieve hole alignment and install the connector, reducing assembly time.

[0018] Furthermore, the connector is fixedly mounted on the base plate.

[0019] Beneficial effects: On the one hand, the connectors are pre-fixed on the base plate, eliminating the need for separate handling and alignment of connector positions during on-site assembly. Only the sealing plate at the bottom of the support column needs to be aligned with the base plate, and the mounting holes of the sealing plate aligned with the pre-fixed connectors, to complete the initial alignment and connection between the support column and the base plate. This eliminates the scattered steps of finding connectors, positioning, and drilling, significantly reducing the assembly time for a single support pier. Since railway overhead construction often relies on maintenance windows, which are highly time-constrained, this design directly meets the core requirement of efficient on-site construction, improving overall operational efficiency. On the other hand, railway overhead construction sites are mostly open-air roadbeds with complex environments. Scattered connectors are easily scattered or lost during handling and assembly, leading to improper connection between the support column and the base plate and affecting construction progress. Fixing the connectors to the base plate creates an integrated structure, eliminating the need for separate storage, handling, and management of scattered parts, fundamentally avoiding the problem of missing parts and reducing material loss and management costs during construction.

[0020] Furthermore, a stiffening plate is provided on the side of the connecting plate facing the center of the bottom plate / top plate, and the two adjacent edges of the stiffening plate are respectively connected to the connecting plate and the bottom plate / top plate.

[0021] Beneficial effects: On the one hand, the connecting plate is the core load-bearing component of the horizontal splicing of the piers. After the splicing of adjacent piers, the horizontal tension transmitted by the fasteners and the bending moment brought by the overhead system will be concentrated on the connecting plate, which can easily lead to warping, bending and other deformations, affecting the splicing accuracy and connection firmness. The stiffening plate is set on the side of the connecting plate facing the center of the bottom / top plate, and its two adjacent edges are rigidly connected to the connecting plate and the bottom / top plate respectively, forming a triangular support structure. This significantly improves the overall stiffness and bending and deformation resistance of the connecting plate, effectively preventing the deformation of the connecting plate under load, ensuring that the connecting plate always remains flat and in close contact after splicing, and guaranteeing the structural stability of the horizontal splicing.

[0022] On the other hand, the connection edge between the connecting plate and the bottom / top plate is a natural stress concentration point. Without stiffening plates, the splicing load will be directly concentrated at this connection edge, which can easily lead to cracking and weld failure at the connection point under long-term load, affecting the service life of the device. The installation of stiffening plates disperses the splicing load on the connecting plate to the plate surface area of ​​the bottom / top plate, rather than concentrating it only at a single connection edge. This allows the force flow to be evenly diffused from the connecting plate through the stiffening plates to the entire bottom / top plate, significantly reducing the local stress at the connection node, preventing structural damage caused by stress concentration, and improving the load-bearing capacity and fatigue resistance of the splicing node.

[0023] Furthermore, the bottom surface of the base plate is provided with an anti-slip pad.

[0024] Beneficial Effects: The base surfaces for railway overhead construction are mostly railway subgrade (soil / gravel), hardened ground, etc. When the base plate directly contacts the base surface, the friction is relatively low. Affected by construction vibrations, train impacts, horizontal thrust of the overhead system, or wind loads, the supports are prone to horizontal slippage, leading to misalignment and stress imbalance in the spliced / stacked support system. By installing anti-slip pads on the bottom surface of the base plate, the contact friction between the base plate and the base surface can be increased, forming a reliable anti-slip constraint to prevent horizontal displacement of the supports. This ensures that individual supports and the overall support system after splicing / stacking always maintain precise installation positions, guaranteeing the stability of load transfer and avoiding the risk of structural instability caused by slippage.

[0025] Furthermore, the connecting plate has a plurality of spaced-apart connecting holes.

[0026] Beneficial effects: The connecting plate is the core load-bearing component of the horizontal splicing of the piers. After splicing, it needs to withstand the tensile, shear, and horizontal thrust transmitted by the overhead system. A single connecting hole with a single fastener is prone to stress concentration, leading to hole deformation, fastener loosening, or even cracking of the connecting plate. Multiple spaced connecting holes can be used with multiple fasteners to achieve uniform fixation at multiple points, distributing the load of the splicing node evenly to multiple stress points of the connecting plate. This significantly reduces the local stress of a single hole or fastener, while also allowing for a tighter fit between the connection surfaces of adjacent piers, limiting relative displacement and warping between piers, improving the deformation and loosening resistance of the splicing node, and ensuring the rigidity and load-bearing reliability of the overall support system after horizontal splicing.

[0027] Furthermore, each side of the bottom plate and the top plate is provided with the connecting plate.

[0028] Beneficial effects: On the one hand, connecting plates are provided on each side of the base plate and top plate, allowing individual supports to overcome the limitations of splicing in a single / one-sided direction. They can be fastened together with other supports in any horizontal direction (front, back, left, right). This allows for flexible combination into linear, double-row, rectangular, or even polygonal overall support systems based on the actual support point layout of railway overhead construction. It is suitable for both straight-line overhead support point layouts and can meet the needs of zigzag and enclosed support point layouts caused by line alignment and construction surface limitations, maximizing the adaptability of the support device to diverse working conditions.

[0029] On the other hand, connecting plates are installed on each side of the base plate and top plate, ensuring that the structure of all supports is completely uniform, with no distinction in splicing direction. During on-site manual assembly, there is no need to identify the splicing / non-splicing side of the support; any support can be picked up and connected to other supports in any direction, significantly reducing manual identification and alignment time and minimizing rework caused by incorrect orientation. Furthermore, the standardized support design allows a single person to complete the splicing and alignment operation without the need for multiple people to adjust the support orientation, adapting to the time-limited manual assembly conditions during railway maintenance windows and further improving overall assembly efficiency.

[0030] Furthermore, the support column is a steel pipe column, and both the base plate and the top plate are steel plates.

[0031] Beneficial effects: Steel possesses high tensile, shear, and compressive strength, as well as good structural stiffness, making it a preferred material for load-bearing structures in engineering. Among them, steel pipe columns, with their hollow circular cross-sections, exhibit significantly superior axial compressive, bending deformation, and instability resistance compared to solid steel columns. They can efficiently withstand the vertical heavy loads of railway overhead systems, and are less prone to bending or crushing when stacked in multiple layers, adapting to vertical load-bearing requirements at different heights. The steel plate base and top plates possess high planar stiffness and strong overall load-bearing capacity, evenly receiving the vertical loads transmitted from the steel pipe columns and distributing the loads to the base surface (base plate) or the overhead system (top plate). Simultaneously, they can stably bear the loads of horizontally spliced ​​connecting plates, preventing plate deformation and collapse caused by localized stress concentration. The combination of these two components forms a load-bearing structure with complementary mechanical properties, ensuring the structural stability of individual piers and the overall system after splicing / stacking under heavy and complex loads. Attached Figure Description

[0032] Figure 1 A schematic diagram of the modular support device for railway overhead lines provided by the present invention; Figure 2 This is a top view of the base plate provided by the present invention; Figure 3 for Figure 2 Side view of the midsole plate; Figure 4 A bottom view of the top plate provided by this invention; Figure 5 for Figure 4 Side view of the top slab; Figure 6 A bottom view of the partition provided by the present invention; Figure 7 for Figure 6 Front view of the partition; Figure 8 A cross-sectional view of the support column provided by the present invention; Figure 9 This is an end view of the support column provided by the present invention.

[0033] Explanation of reference numerals in the attached figures: 1. Base plate; 2. Top plate; 3. Support column; 4. Connecting plate; 5. Connecting hole; 6. Positioning hole; 7. Sealing plate; 8. Mounting hole; 9. Stiffening plate; 10. Partition plate; 11. Steel ring. Detailed Implementation

[0034] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0035] Embodiments of the modular support device for railway overhead lines provided by the present invention: like Figures 1 to 9 As shown, the modular support device for railway overhead lines includes several piers, each with the same structural form, and all piers can be spliced ​​together in the horizontal plane and stacked in the vertical direction. Each pier includes a base plate 1, a top plate 2, and a support column 3 located between the base plate 1 and the top plate 2. The two ends of the support column 3 are detachably connected to the base plate 1 and the top plate 2, respectively.

[0036] Regarding top plate 2 and bottom plate 1.

[0037] like Figures 2 to 5 As shown, in this embodiment, both the base plate 1 and the top plate 2 are square plates. The four sides of the base plate 1 are provided with upward-extending connecting plates 4, and the four sides of the top plate 2 are provided with downward-extending connecting plates 4. Each connecting plate 4 has three horizontally spaced connecting holes 5. When different span requirements need to be accommodated, the adjacent supports can be detachably connected in the horizontal direction by passing fasteners through the corresponding connecting holes 5 on two adjacent supports. Different positions of the connecting holes 5 can be selected for docking according to the actual spacing requirements, achieving fine-tuning of the spacing. Single-hole or multi-hole fixing can also be selected according to the load size, balancing construction convenience and load-bearing reliability. In this embodiment, the fastener is a bolt.

[0038] like Figures 1 to 5 As shown, in this embodiment, a stiffening plate 9 is provided on the side of the connecting plate 4 facing the center of the bottom plate 1 / top plate 2. The two adjacent edges of the stiffening plate 9 are connected to the connecting plate 4 and the bottom plate 1 / top plate 2 respectively, forming a stable triangular support structure, which effectively strengthens the bending and deformation resistance of the connecting plate 4 and avoids cracking and warping at the splicing joint due to stress concentration. In this embodiment, stiffening plates 9 are provided at both ends of the connecting plate 4 and between two adjacent connecting holes 5, and the stiffening plates 9 are triangular plates.

[0039] In other embodiments, one, two, or three sides of the base plate 1 are provided with upwardly extending connecting plates 4, and one, two, or three sides of the top plate 2 are provided with downwardly extending connecting plates 4; the connecting plates 4 are provided with a plurality of connecting holes 5 spaced apart in the vertical direction, or the connecting plates 4 are provided with a single connecting hole 5.

[0040] In this embodiment, the required support height is met by stacking multiple supports vertically. Figure 2 and Figure 4As shown, in this embodiment, corresponding positioning holes 6 are provided at the corners of the bottom plate 1 and the top plate 2. When different support height requirements need to be met, multiple supports are stacked vertically. By installing positioning components in the positioning holes 6, the upper and lower supports can be quickly and accurately aligned, avoiding center misalignment or horizontal displacement during stacking or support. This ensures that the support columns 3 of the upper and lower supports are precisely aligned with the bearing surface, improving the stability of the stacked structure. In this embodiment, the positioning component is a bolt.

[0041] In this embodiment, the bottom surface of the base plate 1 is provided with an anti-slip pad. The anti-slip pad can increase the frictional resistance with the construction base surface, effectively prevent the support from sliding horizontally under the action of external forces such as construction vibration and train impact, and also disperse the contact pressure of the base plate 1 on the base surface, preventing the soft base surface from being crushed. At the same time, it plays a shock absorption and buffering role, protects the structure of the base plate 1 and extends the service life of the device.

[0042] Regarding support column 3: There are multiple support columns 3, which are respectively arranged at the corners and / or the center of the base plate 1. For example... Figure 2 and Figure 4 As shown, in this embodiment, there are five support columns 3. The five support columns 3 are respectively arranged at the four corners and the center of the base plate 1, forming a balanced force structure with the corner anti-lateral displacement and the center strong bearing capacity working together. This can greatly improve the overturning resistance and overall stiffness of the support column, ensuring that it is not easy to bend or deform under train load and complex stress scenarios.

[0043] like Figure 8 and Figure 9 As shown, in this embodiment, each support column 3 has a sealing plate 7 on its top and bottom surfaces. The sealing plate 7 has an installation hole 8, and the bottom plate 1 and top plate 2 have corresponding installation holes 8. The bottom plate 1 / top plate 2 is connected to the sealing plate 7 by a connector that passes through the bottom plate 1 / top plate 2 and the sealing plate 7, thereby realizing the connection between the bottom plate 1 / top plate 2 and the support column 3.

[0044] In this embodiment, the connector is a bolt, and the sealing plate 7 has a threaded hole that matches the bolt. The mounting hole 8 of the base plate 1 is welded with a bolt as a connector, and the threaded section of the bolt protrudes upward from the base plate 1. During assembly, it is only necessary to align the mounting hole 8 of the sealing plate 7 at the bottom of the support column 3 with the bolt on the base plate 1, insert it, and tighten it to complete the detachable connection between the support column 3 and the base plate 1. Similarly, the top plate 2 is firmly connected to the support column 3 by bolts that pass through its mounting hole 8 and the mounting hole 8 of the sealing plate 7 at the top of the support column 3. The entire connection process does not require additional calibration of the connector position, which greatly improves the assembly efficiency.

[0045] like Figure 1 As shown, in this embodiment, a partition 10 is provided between the top plate 2 and the support column 3; Figure 6 and Figure 7As shown, the partition plate 10 has mounting holes 8 corresponding to the mounting holes 8 on the top plate 2, and the bottom surface of the partition plate 10 has a steel ring 11 at the mounting hole 8 for the top of the support column 3 to pass through, so as to limit the top of the support column 3; the corner of the partition plate 10 has a positioning hole 6 corresponding to the position and size of the positioning hole 6 at the corner of the top plate 2, and the positioning element passes through the bottom plate 1 of the upper support, the lower support, the top plate 2 and the partition plate 10 to realize the positioning of the upper support and the lower support.

[0046] It should be noted that in this embodiment, the length, width, and height of the support pier are all 50 cm, which ensures both load-bearing stability and meets the operational requirements for manual handling and assembly within the track maintenance window. It can be flexibly combined to suit different railway overhead construction scenarios. The base plate 1 and top plate 2 are both made of 10 mm thick square steel plates, while the support column 3 is made of seamless steel pipe with a length of 480 mm, a diameter of 114 mm, and a wall thickness of 6 mm. The steel possesses excellent tensile, compressive, and bending resistance. The hollow structure of the steel pipe column achieves lightweighting while effectively improving vertical load-bearing capacity and resistance to instability. The base plate 1 and top plate 2, made of steel plates, have good planar stiffness, which can evenly distribute loads and avoid localized stress concentration.

[0047] The working principle of the modular support device for railway overhead lines provided by this invention is as follows: First, the base plate 1 is placed on a flat construction base surface, ensuring that the embedded bolts on the base plate 1 face upwards. The construction personnel then align the five pillars 3 with the embedded bolts on the base plate 1, insert them into the holes one by one, and tighten them to complete the fixing of the pillars 3 and the base plate 1. Subsequently, the top plate 2 is manually moved to the top of the steel pipe column, so that the mounting holes 8 of the top plate 2 are precisely aligned with the mounting holes 8 of the sealing plate 7 at the top of the pillar 3. Bolts are used as connecting parts to fix the top plate 2 and the steel pipe column, thus completing the assembly of a single support pier.

[0048] When the support length needs to be adjusted, multiple supports are spliced ​​together horizontally using bolts as fasteners through the connecting plates 4 on each side of the supports and multiple spaced connecting holes 5. When the support height needs to be adjusted, multiple supports are stacked vertically with the help of positioning holes 6 at the corners of the bottom plate 1 and the top plate 2, ultimately forming a support system that adapts to the actual construction needs.

[0049] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "back," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification and should not be understood or interpreted as limiting the present invention.

[0050] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A modular support device for overhead railways, characterized in that, Includes several piers; The support includes a base plate, a top plate, and a support column located between the base plate and the top plate, with both ends of the support column being detachably connected to the base plate and the top plate, respectively. At least one side of the base plate is provided with an upwardly extending connecting plate, and at least one side of the top plate is provided with a downwardly extending connecting plate. The connecting plates are provided with connecting holes. By passing fasteners through the corresponding connecting holes on two adjacent supports, two adjacent supports are detachably connected in the horizontal direction to form a support system that adapts to different span requirements. Multiple supports are stacked in the vertical direction to meet the support height requirements.

2. The modular support device for railway overhead lines according to claim 1, characterized in that, The bottom plate and the top plate are provided with corresponding positioning holes at their corners, so as to assist the support in positioning when stacking by installing positioning parts in the positioning holes.

3. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, The number of pillars is multiple, and the multiple pillars are respectively arranged at the corners and / or the center of the base plate.

4. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, The support column has a sealing plate on its bottom and top surfaces, and the sealing plate has mounting holes. The bottom plate and the top plate have corresponding mounting holes, so that the bottom plate / top plate and the sealing plate can be connected by a connector that passes through the bottom plate / top plate and the sealing plate.

5. The modular support device for railway overhead lines according to claim 4, characterized in that, The connector is fixedly installed on the base plate.

6. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, A stiffening plate is provided on the side of the connecting plate facing the center of the bottom plate / top plate, and the two adjacent edges of the stiffening plate are respectively connected to the connecting plate and the bottom plate / top plate.

7. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, The bottom surface of the base plate is provided with an anti-slip pad.

8. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, The connecting plate has a plurality of spaced-apart connecting holes.

9. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, The connecting plate is provided on each side of the bottom plate and the top plate.

10. The modular support device for railway overhead lines according to claim 1 or 2, characterized in that, The support column is a steel pipe column, and the base plate and the top plate are both steel plates.

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