Splicing platform suitable for special-shaped plank road bridge

Abstract

The invention belongs to the technical field of building construction auxiliary equipment, and particularly discloses a splicing platform suitable for a special-shaped plank road bridge, the splicing platform comprises a hanging basket and a hanging piece unit, the hanging piece unit comprises a mounting plate, two sets of limiting plates, a pressing block and a fixing block, the pressing block is located below the fixing block, and a first spring is connected between the pressing block and the mounting plate; two ends of the steel structure main body are respectively positioned between the bottom of the limiting plate and the mounting plate; the two limiting plates are located on the two sides of the mounting plate correspondingly, the lower portions of the two limiting plates are hinged to the mounting plate, the tops of the two limiting plates abut against the slopes on the two sides of the mounting plate, and a second spring is connected between the two limiting plates; and a driving unit for driving the pressing block to descend is arranged on the fixing block, and the two limiting plates can be pushed to swing outwards in the descending process of the pressing block, so that the bottoms of the limiting plates make close contact with the steel structure body. The connecting stability of the splicing platform and the steel structure body can be improved, and therefore safety is improved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for building construction, and specifically to a splicing platform suitable for irregularly shaped walkway bridges. Background Technology

[0002] Traditional installation platforms often fall short when dealing with irregularly shaped walkway bridges. Due to their fixed structure, they cannot flexibly adapt to bridges of different shapes and sizes. During installation, the platform's position and angle may need to be frequently adjusted, increasing construction difficulty and time costs.

[0003] During construction, the complexity of the bridge structure limited the operating space for workers performing tasks such as railing installation, aluminum panel installation, and lighting installation, increasing the difficulty and safety risks. For example, in some narrow and irregularly shaped sections, workers had difficulty maneuvering, and erecting scaffolding for construction work placed significant demands on and dependence on the slope terrain. These problems not only affected construction efficiency but also threatened construction quality and safety.

[0004] To solve the above problems, such as Figure 4 As shown, existing technologies use suspended platforms for operations. However, the existing suspended platform structure is hung on the steel structure through a 7-shaped bracket connected to its top. Although this method allows for direct hanging on the steel structure and avoids the dependence on slope terrain for scaffolding construction, the existing structure has poor stability. The bracket is prone to slippage during construction, causing the suspended platform to sway and affecting construction safety. Summary of the Invention

[0005] This invention provides a splicing platform suitable for irregularly shaped trestle bridges, with the aim of improving the connection stability between the splicing platform and the main steel structure, thereby enhancing safety.

[0006] This invention is achieved through the following technical solution: a splicing platform suitable for irregularly shaped walkway bridges, comprising a suspended platform and a hanging unit, wherein the suspended platform is connected to the hanging unit and the suspended platform is fixed to the main steel structure through the hanging unit, the hanging unit comprising an installation plate, two sets of limiting plates, a clamping block and a fixing block, a vertical plate is vertically connected to one side of the installation plate, the fixing block is fixedly connected to the vertical plate, the clamping block is located below the fixing block, and a first spring is connected between the clamping block and the installation plate;

[0007] Both sets of limiting plates are L-shaped, with the two ends of the main steel structure located between the bottom of the limiting plate and the mounting plate, respectively; the two sets of limiting plates are located on both sides of the mounting plate, and the lower parts of the two sets of limiting plates are hinged to the mounting plate; the clamping block is inverted trapezoidal, and the tops of the two sets of limiting plates abut against the inclined surfaces on both sides of the mounting plate; a second spring connects the two sets of limiting plates.

[0008] The fixed block is equipped with a drive unit that drives the clamping block to descend. During the descent of the clamping block, it can push the two sets of limiting plates to swing outward respectively, so that the bottom of the limiting plates is in close contact with the main body of the steel structure.

[0009] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0010] In this design, the lower parts of the two sets of L-shaped limiting plates are hinged to the mounting plate, and the tops abut against the inclined surface of the inverted trapezoidal clamping block. When the drive unit lowers the clamping block, the inclined surface thrust causes the limiting plates to swing outward, ensuring a tight fit between the bottom of the limiting plates and both ends of the steel structure. This structure can restrict the displacement of the steel structure laterally, while simultaneously applying pressure to the mounting plate vertically through the synergistic action of the clamping block and spring. This effectively limits and secures the steel structure, preventing loosening between components. Compared to existing technologies that directly attach the plates to the steel structure using L-shaped brackets, this design improves connection stability, making the entire splicing platform less prone to slippage, thus enhancing the overall safety and stability of the splicing platform.

[0011] The first spring between the clamping block and the mounting plate undergoes elastic deformation during the descent of the clamping block, generating a continuous downward support force. This force not only counteracts the stress caused by vibration and temperature changes during the use of the walkway, reducing hard friction wear of components, but also automatically adjusts the clamping force when the load fluctuates. When the load increases, the spring is further compressed, enhancing the clamping force of the limiting plate on the main steel structure. When the load decreases, the spring rebounds to maintain the basic fit, ensuring that the connection remains stable and preventing connection failure due to load changes.

[0012] When it is necessary to disassemble or adjust the hanging unit, simply reverse the operation of the drive unit to raise the clamping block under the action of the first spring. The inclined thrust of the clamping block on the limiting plate disappears, and the two sets of limiting plates swing inward under the reset pull of the second spring, which can quickly release the contact with the main steel structure. This process does not require disassembling the drive unit or damaging the connection structure. The entire disassembly process can be completed within 1-2 minutes, which greatly shortens the construction cycle during the maintenance and renovation of the walkway and makes it easy to move to the next node for continued construction operations.

[0013] Furthermore, the swing angle of the limiting plate in this solution can be flexibly adjusted by the descent distance of the clamping block, without being limited by the cross-sectional shape of the steel structure. Whether it's an arc-shaped, trapezoidal, or irregularly shaped steel structure, as long as both ends of the steel structure can be accommodated between the bottom of the limiting plate and the mounting plate, a tight fit can be achieved by adjusting the swing amplitude of the limiting plate. This solves the technical problem of traditional splicing platforms being unable to adapt to irregularly shaped walkways due to their fixed structure. It can be widely used in complex scenarios such as curved scenic walkways in scenic areas and zigzag walkways in mountainous areas, covering most types of irregularly shaped steel structure cross-sections. Moreover, as an independent unit, the splicing platform in this solution can be hung at specific work locations as needed, without relying on terrain conditions, thus making it suitable for construction use on irregularly shaped walkways and bridges.

[0014] The hanging unit adopts a modular design consisting of mounting plates, limiting plates, clamping blocks, and fixing blocks. Each component can be manufactured, transported, and replaced individually. On-site, the suspended platform only needs to be connected to the hanging unit, and then fixed by the drive unit. This modular structure not only facilitates mass production and reduces manufacturing costs, but also allows for flexible replacement of springs and limiting plates of different strength grades according to the load-bearing requirements of different sections of the walkway. This avoids material waste or over-performance caused by a one-size-fits-all design, and improves resource utilization efficiency.

[0015] Furthermore, a guide post is vertically fixed to the top of the mounting plate, and a guide hole is provided at the bottom of the clamping block. The guide post and the guide hole are axially slidably engaged, and the first spring is sleeved on the outside of the guide post.

[0016] Beneficial effects: The guide column in this solution can further support and guide the clamping block, providing rigid guiding constraints for the up and down movement of the clamping block, and effectively preventing the clamping block from shifting laterally or tilting under the action of the drive unit.

[0017] Furthermore, a sliding column is vertically fixed to the top of the clamping block, and a sliding hole is vertically opened on the fixed block. The sliding column is located in the sliding hole and slides vertically with the sliding hole. The driving unit can drive the sliding column to slide downward.

[0018] Beneficial effects: The sliding column and the sliding hole on the fixed block form a vertical sliding fit. The drive unit transmits force by directly acting on the sliding column. The output displacement of the drive unit is accurately converted into the downward stroke of the clamping block. In addition, the fit between the sliding column and the sliding hole can also guide the downward movement of the clamping block, ensuring the stable descent of the clamping block.

[0019] Furthermore, the driving unit includes a driving rod, and a transverse groove is provided on the fixed block. The transverse groove is a through groove structure and communicates with the sliding hole. The driving rod is located in the transverse groove and slides with the transverse groove. One end of the driving rod passes through the vertical plate and slides with the vertical plate laterally.

[0020] The sliding column has a through hole opened laterally, and the bottom of the through hole has an inclined surface; one side of the driving rod has a driving wedge surface that matches the inclined surface at the bottom of the through hole. During the lateral sliding of the driving rod, the driving wedge surface can push the sliding column downward and drive the pressing block downward, thereby pushing the two sets of limiting plates to swing outward; during the reverse sliding of the driving rod, the pressing block can gradually return to its original position under the action of the first spring.

[0021] Beneficial effects: In this solution, the driving wedge surface of the drive rod precisely matches the inclined surface at the bottom of the through hole of the sliding column. The driving force of the lateral sliding is converted into the vertical downward displacement of the sliding column. This wedge surface transmission structure can effectively reduce force transmission loss. It significantly reduces the power requirement of the drive unit and reduces the energy consumption of the equipment, making it particularly suitable for outdoor high-altitude walkway construction scenarios that rely on battery power.

[0022] When the drive rod slides laterally in the forward direction, the drive wedge pushes the sliding column downward, causing the clamping block to push the limiting plate outward, thus locking it with the main steel structure. When sliding in the reverse direction, the drive wedge disengages from the sliding column, the clamping block moves upward under the elastic reset action of the first spring, and the limiting plate swings inward under the tension of the second spring, achieving quick unlocking. The entire adjustment process requires no disassembly of any parts and can be completed solely through the bidirectional sliding of the drive rod, making it particularly convenient for quick assembly and disassembly during trestle maintenance.

[0023] Furthermore, when the drive rod slides in the reverse direction, the clamping block automatically resets upwards by the elastic force of the first spring, without the need for additional driving power. At the same time, the elastic reset process is carried out during the reverse sliding of the drive rod, and its reset process is smooth and controllable (by controlling the sliding speed of the drive rod). This prevents the clamping block from rebounding rapidly and causing the limit plate to swing suddenly inwards, avoiding violent collisions with the main steel structure, reducing component damage, and further ensuring the structural safety of the walkway during use.

[0024] Furthermore, a telescopic cylinder is connected to the upright plate, and the output shaft of the telescopic cylinder is connected to the drive rod.

[0025] Beneficial effects: In this solution, the drive rod is driven to slide forward or backward by a telescopic cylinder. Compared with manually pushing the drive rod, this solution is more automated and can also achieve a self-locking function, which can fix the position of the drive rod after movement without the need for an additional locking structure.

[0026] Furthermore, a drive groove is provided on the bottom side of the drive rod. The drive groove includes the drive wedge surface and the inverted L-shaped surface. The drive wedge surface contacts the inclined surface inside the through hole of the sliding column, and the inverted L-shaped surface can abut against one side of the sliding column.

[0027] Beneficial effects: In this design, the driving wedge surface is used to push the clamping block downward, while the inverted L-shaped surface can abut against one side of the sliding column, thereby reminding the driving rod to slide into position and preventing the driving rod from disengaging from the fixed block, thus ensuring a stable fit between the driving rod and the sliding column.

[0028] Furthermore, the suspended platform is detachably connected to the mounting plate.

[0029] Beneficial effects: Irregularly shaped walkways and bridges are often built in mountainous areas, scenic spots, and other areas with inconvenient transportation. Traditional integrated splicing platforms are difficult to transport through narrow mountain roads and with small transport equipment due to their large size and concentrated weight. However, the detachable connection between the suspended platform and the mounting plate allows the splicing platform to be divided into two independent modules: the suspended platform and the hanging unit. This reduces the weight of each module, making transportation and storage easier.

[0030] Furthermore, a roller frame is connected to the top of the limiting plate, and a roller is rotatably connected to the roller frame, with the roller abutting against the inclined surface of the clamping block.

[0031] Beneficial effects: In this solution, the roller and the inclined surface of the clamping block are in point contact. The contact pressure can be evenly distributed to the roller surface through rolling, avoiding wear of the inclined surface of the clamping block or deformation of the top of the limiting plate caused by local stress concentration.

[0032] The roller is rotatably connected to the top of the limiting plate via the roller frame. When it contacts the inclined surface of the clamping block, the sliding friction between the top of the traditional limiting plate and the clamping block is converted into the rolling friction of the roller, which reduces the resistance of the clamping block in pushing the limiting plate to swing.

[0033] Furthermore, each of the two sets of limiting plates is connected to a connecting post, and the two ends of the second spring are respectively connected to the connecting posts on the two sets of limiting plates.

[0034] Beneficial effects: The connecting posts on the two sets of limiting plates provide precise fixing points for the second spring, enabling the two ends of the spring to maintain a perpendicular and symmetrical connection with the limiting plates, thus preventing the spring from being stretched or twisted on one side due to connection offset.

[0035] Furthermore, each group of limiting plates has at least two plates, and adjacent limiting plates are spaced apart.

[0036] Beneficial effects: This solution improves the tightness between the hanging unit and the main steel structure, further enhancing the stability of the entire splicing platform. Multiple spaced limiting plates are in close contact with the main steel structure, forming multi-dimensional limiting constraints. This not only restricts the vertical displacement of the hanging unit but also limits lateral offset and rotation through the cooperation of adjacent limiting plates. Especially after long-term use of the walkway and minor wear on components, the stable connection can still be maintained through the support of other limiting plates, providing redundant safety assurance for the splicing platform. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is a schematic diagram showing the state of the two sets of limiting plates being released from the main steel structure in an embodiment of a splicing platform applicable to irregularly shaped walkway bridges according to the present invention.

[0039] Figure 2 This is a partial structural diagram of a hanging unit in an embodiment of a splicing platform suitable for irregularly shaped trestle bridges according to the present invention;

[0040] Figure 3 This is a schematic diagram showing the state of two sets of limiting plates clamping the main steel structure in an embodiment of a splicing platform applicable to irregularly shaped trestle bridges according to the present invention.

[0041] Figure 4 This is a schematic diagram of the structure of a suspended platform in the prior art.

[0042] The attached diagram shows the markings and corresponding component names:

[0043] 1. Suspended platform, 101. Connecting plate, 2. Steel structure main body, 3. Mounting plate, 4. Limiting plate, 401. Hinge shaft, 5. Vertical plate, 6. Pressing block, 601. Sliding column, 602. Guide hole, 603. Through hole, 7. Fixing block, 701. Sliding hole, 8. Guide column, 9. First spring, 10. Connecting column, 11. Second spring, 12. Roller frame, 13. Roller, 14. Telescopic cylinder, 15. Drive rod, 151. Drive wedge surface, 152. Inverted L-shaped surface. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0045] As one embodiment of this application, such as Figures 1-2As shown, this embodiment provides a splicing platform suitable for irregular trestle bridges, including a suspended basket 1 and a hanging unit. The suspended basket 1 is connected to the hanging unit, and the suspended basket 1 is fixed to the steel structure body 2 through the hanging unit.

[0046] In this embodiment, the hanging unit includes a mounting plate 3, two sets of limiting plates 4, a clamping block 6, and a fixing block 7. A vertical plate 5 is vertically connected to one side of the mounting plate 3. The vertical plate 5 is welded to the mounting plate 3 or fixed by bolts. The fixing block 7 is fixed to the vertical plate 5. In this embodiment, the fixing block 7 is welded to the vertical plate 5 or fixed by bolts. The clamping block 6 is located below the fixing block 7. A first spring 9 is connected between the clamping block 6 and the mounting plate 3. In this embodiment, a guide post 8 is vertically fixed to the top of the mounting plate 3. The guide post 8 is welded to the mounting plate 3 or fixed by bolts. A guide hole 602 is opened at the bottom of the clamping block 6. The guide post 8 slides axially with the guide hole 602. The first spring 9 is sleeved on the outside of the guide post 8.

[0047] In this embodiment, both sets of limiting plates 4 are L-shaped, with the two ends of the main steel structure 2 located between the bottom of the limiting plate 4 and the mounting plate 3, respectively. The two sets of limiting plates 4 are located on both sides of the mounting plate 3, and the lower parts of both sets of limiting plates 4 are hinged to the mounting plate 3 via hinge shafts 401. The limiting plates 4 and the mounting plate 3 can be disassembled. In this embodiment, the hinge shafts 401 are fixed to the mounting plate 3 by cotter pins, facilitating the later disassembly of the limiting plates 4. In this embodiment, the clamping block 6 is inverted trapezoidal, meaning that the two sides of the clamping block 6 are symmetrical inclined surfaces, and the top width of the clamping block 6 is greater than the bottom width.

[0048] The tops of both sets of limiting plates 4 abut against the inclined surfaces on both sides of the mounting plate 3. A second spring 11 connects the two sets of limiting plates 4. Under the action of the second spring 11, the two sets of limiting plates 4 tend to swing inward. The pressing block 6 is located between the two sets of limiting plates 4. In this embodiment, each set of limiting plates 4 is connected to a connecting post 10. The two ends of the second spring 11 are respectively connected to the connecting posts 10 on the two sets of limiting plates 4. In this embodiment, the connecting posts 10 on the two sets of limiting plates 4 are flush with each other, and the connecting posts 10 are vertically welded or threaded to the front side of the limiting plates 4. The second spring 11 is a tension spring, and the two ends of the tension spring are hooked on the connecting posts 10 on the two sets of limiting plates 4.

[0049] The fixed block 7 is equipped with a drive unit that drives the pressing block 6 to descend. During the descent of the pressing block 6, it can push the two sets of limit plates 4 to swing outward respectively, so that the bottom of the limit plate 4 is in close contact with the steel structure body 2.

[0050] In one embodiment, each set of limiting plates 4 has at least two plates, and adjacent limiting plates 4 are spaced apart. This can further improve the tightness between the hanging unit and the steel structure body 2, enhance the stability of the entire splicing platform, and prevent slippage.

[0051] In one embodiment, such as Figure 1 As shown, a roller frame 12 is connected to the top of the limiting plate 4. The roller frame 12 is connected to the limiting plate 4 by bolts or welding. A roller 13 is rotatably connected to the roller frame 12. The roller 13 abuts against the inclined surface of the pressing block 6.

[0052] In one embodiment, such as Figure 1 As shown, in this embodiment, the suspended platform 1 and the mounting plate 3 are detachably connected. Specifically, in this embodiment, a connecting plate 101 is welded and fixed to the top of the suspended platform 1. The connecting plate 101 and the mounting plate 3 are fixedly connected by bolts. The bolt fixing facilitates disassembly in the later stage, thereby connecting or separating the suspended platform 1 from the hanging unit. When the suspended platform 1 is separated from the hanging unit, it is convenient for transportation and reduces the volume.

[0053] In one embodiment, combined Figure 1 and Figure 2 As shown, a sliding column 601 is vertically fixed to the top of the clamping block 6. In this embodiment, the sliding column 601 is integrally formed with the clamping block 6, or fixed by welding or other means. A sliding hole 701 is vertically opened on the fixing block 7. The sliding column 601 is located in the sliding hole 701 and slides vertically with the sliding hole 701. The driving unit can drive the sliding column 601 to slide downward.

[0054] In one embodiment, such as Figure 2 As shown, the driving unit in this embodiment includes a driving rod 15. A horizontal groove is provided on the fixing block 7. The horizontal groove is a through groove structure and is interconnected with the sliding hole 701. The driving rod 15 is located in the horizontal groove and slides with the horizontal groove. In this embodiment, one end of the driving rod 15 passes through the vertical plate 5 and slides with the vertical plate 5 laterally.

[0055] A through hole 603 is provided horizontally on the sliding column 601, and the bottom of the through hole 603 is provided with a slope. A driving wedge surface 151 matching the slope at the bottom of the through hole 603 is provided on one side of the driving rod 15. During the horizontal sliding of the driving rod 15, the driving wedge surface 151 can push the sliding column 601 to slide downward, and drive the pressing block 6 to slide downward, thereby pushing the two sets of limiting plates 4 to swing outward. During the reverse sliding of the driving rod 15, the pressing block 6 can gradually return to its original position under the action of the first spring 9.

[0056] In one embodiment, such as Figure 2As shown, a telescopic cylinder 14 is connected to the upright plate 5. The output shaft of the telescopic cylinder 14 is fixedly connected to the drive rod 15 via a coupling. The telescopic cylinder 14 can be a hydraulic cylinder, an electric cylinder, or a pneumatic cylinder; in this embodiment, the telescopic cylinder 14 is a hydraulic cylinder. In this embodiment, the telescopic cylinder 14 can drive the drive rod 15 to slide automatically in the forward and reverse directions, making it more automated. Furthermore, it can automatically lock after driving the drive rod 15 to move, ensuring the stability of the drive rod 15.

[0057] In one implementation, such as Figure 2 As shown, in this embodiment, a drive groove is provided on the bottom side of the drive rod 15. The drive groove includes a drive wedge surface 151 and an inverted L-shaped surface 152. The drive wedge surface 151 contacts the inclined surface inside the through hole 603 of the sliding column 601. The inverted L-shaped surface 152 can abut against one side of the sliding column 601. In this embodiment, the inverted L-shaped surface 152 is located on the left side of the sliding column 601. The inverted L-shaped surface 152 has two mutually perpendicular surfaces, one horizontal and one vertical. When the inverted L-shaped surface 152 abuts against the left side of the sliding column 601, it indicates that the drive rod 15 has slid into place. At this time, the two sets of limiting plates 4 are in a state of loosening the main body of the steel structure 2, which facilitates the movement of the entire hanging unit to the next work point to continue the work. At this time, there is no need to remove the hanging unit. Just loosen the limiting plates 4, and it can move on the main body of the steel structure 2.

[0058] The specific implementation process is as follows:

[0059] Combination Figure 1 and Figure 3 As shown, the telescopic cylinder 14 is used to drive the drive rod 15 to slide laterally. The drive rod 15 has a drive wedge surface 151 that matches the inclined surface inside the through hole 603 of the sliding column 601. When the output shaft of the telescopic cylinder 14 extends to the left, it can drive the drive rod 15 to slide laterally to the left, thereby causing the drive wedge surface 151 to push the sliding column 601 to slide downward, which in turn drives the pressing block 6 to slide downward. During the downward sliding process of the pressing block 6, it can push the top of the two sets of limiting plates 4 outward, thereby causing the two sets of limiting plates 4 to swing outward, so that the bottom of the limiting plate 4 gradually comes into close contact with the steel structure body 2 (e.g., Figure 3 As shown in the figure, this improves the stability between the entire hanging unit and the main steel structure 2, thereby ensuring safety during use.

[0060] In this embodiment, the entire hanging unit is easy to move from the steel structure body 2, such as... Figure 1 As shown, when the output shaft of the telescopic cylinder 14 retracts to the right, it drives the drive rod 15 to slide to the right, causing the clamping block 6 to gradually reset upward under the action of the first spring 9. During the upward reset process, the two sets of limiting plates 4 swing inward under the action of the second spring 11, causing the limiting plates 4 to loosen from the steel structure body 2, which facilitates the disassembly or movement of the hanging unit.

[0061] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A splicing platform suitable for a special-shaped stack bridge, comprising a hanging basket and a hanging piece unit, the hanging basket being connected with the hanging piece unit, the hanging basket being fixed on a steel structure main body through the hanging piece unit, characterized in that, The pendant unit comprises a mounting plate, two sets of limiting plates, a pressing block and a fixing block, one side of the mounting plate is vertically connected with a vertical plate, the fixing block is fixedly connected with the vertical plate, the pressing block is located below the fixing block, a first spring is connected between the pressing block and the mounting plate; Both sets of the limiting plates are L-shaped, both ends of the steel structure body are located between the bottom of the limiting plate and the mounting plate; both sets of the limiting plates are located on both sides of the mounting plate, and the lower part of both sets of the limiting plates is hingedly connected with the mounting plate, the pressing block is inverted trapezoidal, the top of both sets of the limiting plates is abutted with the inclined surface of both sides of the mounting plate, and a second spring is connected between both sets of the limiting plates; The fixing block is provided with a driving unit for driving the pressing block to descend, and the pressing block can push both sets of the limiting plates to swing outward respectively during the descending process, so that the bottom of the limiting plate is in close contact with the steel structure body.

2. The splicing platform for the special-shaped stack bridge according to claim 1, characterized in that, The top of the mounting plate is vertically and fixedly connected with a guide column, the bottom of the pressing block is provided with a guide hole, the guide column and the guide hole are axially and slidingly matched, and the first spring is sleeved outside the guide column.

3. The splicing platform for the special-shaped stack bridge according to claim 1, characterized in that, The top of the pressing block is vertically and fixedly connected with a sliding column, a sliding hole is vertically formed in the fixing block, the sliding column is located in the sliding hole and vertically and slidingly matched with the sliding hole, and the driving unit can drive the sliding column to slide downward.

4. The splicing platform for the special-shaped stack bridge according to claim 3, characterized in that, The driving unit comprises a driving rod, a horizontal groove is horizontally formed in the fixing block, the horizontal groove is a through groove structure, the horizontal groove and the sliding hole are mutually penetrated, the driving rod is located in the horizontal groove and slidingly matched with the horizontal groove, one end of the driving rod penetrates through the vertical plate and is horizontally and slidingly matched with the vertical plate; A through hole is horizontally formed in the sliding column, the bottom of the through hole is provided with an inclined surface, one side of the driving rod is provided with a driving wedge surface matched with the inclined surface of the bottom of the through hole, the driving rod can make the driving wedge surface push the sliding column to slide downward during the horizontal sliding process, and drive the pressing block to slide downward to push both sets of the limiting plates to swing outward, and the pressing block can gradually reset upward under the action of the first spring during the reverse sliding process of the driving rod.

5. A splicing platform for use with a profiled deck bridge according to claim 4, wherein, A telescopic cylinder is connected with the vertical plate, and an output shaft of the telescopic cylinder is connected with the driving rod.

6. The splicing platform for the special-shaped stack bridge according to claim 4, characterized in that, A driving groove is formed in the bottom side of the driving rod, the driving groove comprises the driving wedge surface and an inverted L-shaped surface, the driving wedge surface is in contact with the inclined surface in the through hole of the sliding column, and the inverted L-shaped surface can abut against one side of the sliding column.

7. The splicing platform for the special-shaped stack bridge according to claim 1, characterized in that, The hanging basket is detachably connected with the mounting plate.

8. The splicing platform for the special-shaped stack bridge according to claim 1, characterized in that, A roller frame is connected with the top of the limiting plate, a roller is rotatably connected with the roller frame, and the roller abuts against the inclined surface of the pressing block.

9. The splicing platform for the special-shaped stack bridge according to claim 1, characterized in that, Both sets of the limiting plates are connected with connecting columns, and both ends of the second spring are connected with the connecting columns on both sets of the limiting plates.

10. The splicing platform for the special-shaped stack bridge according to any one of claims 1-9, characterized in that, The number of each set of the limiting plates is at least two, and adjacent two limiting plates are distributed at intervals.

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