Attached bridge suspender tensioning operation platform

Abstract

The utility model relates to provide an attached bridge suspender tensioning operation platform, including fixed frame end, pasting on the upper beam surface of the cantilever beam, and with the cantilever beam constitute the combination of surface and surface, entrance guardrail is fixedly connected with fixed frame end, and the operating personnel enters from the entrance guardrail, and the middle passage is connected with the entrance guardrail and is arranged downwardly extending, and the operating personnel passes up and down from the middle passage, and the lower operation platform is communicated with the lower end of the middle passage, and the lower operation platform constitutes the support platform of operating personnel and equipment, and is suspended to the lower side of the lower beam surface position of cantilever beam, and the surface and surface combination mode of fixed frame end and cantilever beam forms the rigid connection structure of stable, compared with traditional gondola, aerial work platform, greatly improves the anti-overturning capacity of platform under the adverse weather condition, reduces the equipment overturning and personnel falling risk, avoids the hidden danger of accidental falling in traditional operation mode due to the lack of reliable passage, can conveniently hoist and transport, improves construction efficiency, reduces construction cost.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction auxiliary equipment technology, and in particular to an attached bridge suspender tensioning operation platform. Background Technology

[0002] In modern bridge construction, the tensioning of bridge suspenders is a core process that determines the integrity of the bridge's structural stress system and its stability throughout its service life. During construction, multiple sets of cantilever beams, spaced apart along the bridge's length, serve as anchorage carriers for the suspenders, playing a crucial role in transmitting cable forces and ensuring structural stability. Anchoring the suspenders and cantilever beams requires a safe and stable operating platform; however, existing platform technology faces several technical bottlenecks that urgently need to be addressed.

[0003] Traditional work platforms mainly include suspended platforms, hydraulic climbing equipment, aerial work platforms, and temporary supports. Among these, suspended platforms and aerial work platforms pose significant safety hazards in practical applications: they often operate by suspension or boom support, lacking a rigid connection to the bridge structure. Under severe weather conditions such as strong winds and heavy rain, their insufficient wind resistance and center of gravity shift can easily lead to equipment overturning or personnel falling accidents. Furthermore, when operating in areas with complex bridge alignments (such as curved or irregularly shaped bridges), space constraints make precise positioning difficult, further exacerbating construction risks. While hydraulic climbing equipment offers high stability, the system integrates hydraulic drives and automatic control systems. Equipment installation requires pre-set tracks and anchor points, resulting in high costs for disassembly, assembly, and commissioning, particularly for short-span bridges or projects with a limited number of booms, leading to significant economic disadvantages. Simultaneously, the system's complexity makes troubleshooting and maintenance difficult, significantly impacting construction efficiency. The erection of temporary supports is limited by the engineering geological conditions of the construction site. In soft soil foundations, water environments, or steep slope areas, problems such as support settlement and instability often occur due to the difficulty of foundation treatment and insufficient foundation bearing capacity. Moreover, the erection and dismantling of supports require a large amount of turnover materials and manpower. According to statistics, the erection and dismantling time accounts for a large proportion of the total construction period, which seriously restricts the construction progress.

[0004] Furthermore, due to the construction characteristics of the cantilever beams being spaced out along the bridge's length, the tensioning of the suspenders requires frequent relocation of the work position. Traditional work platforms have significant drawbacks in relocation: suspended platforms and aerial work vehicles are limited by terrain and space, making rapid and continuous operation difficult; hydraulic climbing equipment requires reinstallation of tracks and anchoring systems, resulting in lengthy relocation times; and temporary supports must be completely dismantled and rebuilt, failing to meet the demands of efficient construction. As bridge construction projects develop towards intelligent and green directions, there is an urgent need to develop an attached bridge suspender tensioning work platform that combines high safety, economic feasibility, environmental adaptability, and convenient relocation capabilities to overcome existing technological bottlenecks and improve bridge construction quality and efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an attached bridge suspender tensioning operation platform, which can cooperate with the cantilever beam to carry out suspender tensioning operations, ensuring safety while facilitating hoisting and transportation, improving construction efficiency, and reducing construction costs.

[0006] The technical problem solved by this utility model is addressed by the following technical solution: an attached bridge suspender tensioning operation platform, comprising:

[0007] The fixed end is attached to the upper beam surface of the cantilever beam, and forms a surface-to-surface connection with the cantilever beam;

[0008] An entrance guardrail is fixedly connected to the end of the fixed frame, and workers enter through the entrance guardrail.

[0009] A central passageway, connected to the entrance guardrail and extending downwards, allows workers to pass through both vertically and horizontally.

[0010] The lower working platform is connected to the lower end of the central passage. The lower working platform constitutes a support platform for workers and equipment, and is suspended below the lower beam surface of the cantilever beam.

[0011] This utility model also has the following technical features:

[0012] In one embodiment of this utility model, the fixed frame end is generally rectangular in shape, the upper beam surface of the cantilever beam is horizontal, the frame surface formed by the fixed frame end is in contact with the upper beam surface of the cantilever beam, one end of the fixed frame end extends horizontally, and the entrance guardrail is fixed at the extended end of the fixed frame end.

[0013] In one embodiment of this utility model, a safety screw is provided on the end of the fixed frame, and a tube for the hanging rod to pass through is provided on the upper beam surface of the cantilever beam. The safety screw is horizontal and detachably connected to the end of the fixed frame, and the side wall of the safety screw abuts against the outer wall of the tube.

[0014] In one embodiment of the present invention, the fixing frame end includes at least two fixing bars, the two fixing bars are arranged in parallel and spaced apart, and the tube body is located between the two fixing bars. The fixing bars are respectively provided with through holes for the safety screw to pass through.

[0015] In one embodiment of this utility model, the entrance guardrail is generally in the form of a cuboid frame. One side frame and the top frame of the entrance guardrail are open. One side frame is connected to one end of the fixing frame. The extended ends of the two fixing strips are fixed to the bottom of the entrance guardrail frame. An entrance opening is provided at the bottom of the entrance guardrail frame.

[0016] In one embodiment of the present invention, the central passage includes a vertical climbing frame, the upper end of which is fixed to the bottom of the entrance guardrail, and the entrance is exposed at the upper end of the vertical climbing frame.

[0017] In one embodiment of this utility model, guardrails are provided on the vertical climbing frame, and multiple sets of guardrails are arranged at intervals along the length of the vertical climbing frame, forming a rear safety fence.

[0018] In one embodiment of this utility model, the lower working platform is a horizontally arranged cuboid frame structure, with the upper frame of the lower working platform being open and connected to the lower end of the central channel.

[0019] In one embodiment of this utility model, a support guard plate is provided at the bottom of the frame of the lower working platform.

[0020] In one embodiment of this utility model, the upper frame of the lower working platform extends to a position below the lower beam surface of the cantilever beam.

[0021] Compared with existing technologies, the beneficial effects of this utility model are reflected in the following: This attached bridge suspender tensioning platform effectively overcomes the technical defects of traditional operating platforms through the innovative design and coordinated cooperation of its various components, and achieves significant technical effects in many aspects.

[0022] In terms of safety performance, the surface-to-surface connection between the fixed frame end and the cantilever beam forms a stable rigid connection structure. Compared with the traditional suspended platform and aerial work platform, which lack rigid connection, this greatly improves the platform's anti-overturning ability under severe weather conditions such as strong winds and heavy rain, and reduces the risk of equipment overturning and personnel falling. The entrance guardrail and the central passage provide safe access for workers, avoiding the accidental fall hazards caused by the lack of reliable passage in traditional operation methods.

[0023] In terms of economic feasibility, the platform has a simple structural design and does not require pre-set tracks or anchor points like hydraulic climbing equipment, which reduces the cost of equipment installation and commissioning. At the same time, compared with the temporary support method that requires a lot of turnover materials and manpower for assembly and disassembly, this platform can be quickly installed and moved, significantly reducing labor and material costs, shortening the construction period, and improving economic benefits.

[0024] In terms of environmental adaptability and convenient transfer function, the design of the lower working platform suspended below the cantilever beam surface can flexibly adapt to the construction needs of different bridge types and different terrain conditions, and is not limited by foundation conditions, thus solving the problem of temporary supports being constrained by terrain. Moreover, the entire platform structure is compact, and when the working position needs to be frequently moved due to the long interval of the cantilever beam along the bridge, it can be moved conveniently through quick assembly and disassembly. Compared with the hydraulic climbing equipment, which requires a long time to reinstall the track and the temporary supports need to be completely dismantled and rebuilt, it greatly improves construction efficiency and meets the needs of efficient and continuous operation. Attached Figure Description

[0025] Figure 1 , Figure 2 These are schematic diagrams from two different perspectives showing the installation of the attached bridge suspender tensioning platform on the cantilever beam in one embodiment of this utility model.

[0026] Figure 3 This is a front view of the attached bridge suspender tensioning platform installed on the cantilever beam in one embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the attached bridge suspender tensioning platform in one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the fixed frame end and the entrance guardrail in one embodiment of the present invention. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0030] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] It should be noted that traditional work platforms mainly include suspended platforms, hydraulic climbing equipment, aerial work platforms, and temporary supports. Among them, suspended platforms and aerial work platforms pose significant safety hazards in practical applications: they mostly operate in a suspended or boom-supported manner, lacking a rigid connection with the bridge structure. Under severe weather conditions such as strong winds and heavy rain, they are prone to overturning or personnel falling due to insufficient wind resistance and shifting center of gravity. Furthermore, when operating in areas with complex bridge alignments (such as curved or irregularly shaped bridges), precise positioning is difficult due to space constraints, further exacerbating construction risks. While hydraulic climbing equipment has high stability, the system integrates hydraulic drive and automatic control systems. Equipment installation requires pre-set tracks and anchor points. In projects with short-span bridges or a small number of booms, the cost of disassembly, assembly, and commissioning is high, resulting in serious economic disadvantages. At the same time, its system complexity makes troubleshooting and maintenance difficult, significantly impacting construction efficiency. The erection of temporary scaffolding is limited by the engineering geological conditions of the construction site. In areas with soft soil foundations, water environments, or steep slopes, problems such as scaffolding settlement and instability often occur due to the difficulty of foundation treatment and insufficient foundation bearing capacity. Moreover, the erection and dismantling of scaffolding requires a large amount of turnover materials and manpower. According to statistics, the time spent on erection and dismantling accounts for a large proportion of the total construction period, which seriously restricts the construction progress. In addition, due to the construction characteristics of the cantilever beams being arranged at intervals along the length of the bridge, the tensioning of the suspenders requires frequent relocation of the work position. Traditional work platforms have significant drawbacks when relocating: suspended platforms and aerial work vehicles are limited by terrain and space, making it difficult to achieve rapid and continuous operation; hydraulic climbing equipment requires reinstallation of rails and anchoring systems, resulting in long relocation times; and temporary supports need to be completely dismantled and rebuilt, failing to meet the needs of efficient construction. To address this, this utility model proposes an attached bridge gantry tensioning work platform, comprising: a fixed frame end 10, attached to the upper beam surface of the cantilever beam 20, forming a surface-to-surface connection with the cantilever beam 20; an entrance guardrail 30, fixedly connected to the fixed frame end 10, through which workers enter; a central passageway 40, connected to the entrance guardrail 30 and extending downwards, through which workers move up and down; and a lower work platform 50, connected to the lower end of the central passageway 40, which serves as a support platform for workers and equipment and is suspended below the lower beam surface of the cantilever beam 20.

[0032] In the above embodiments, see Figures 1 to 3 After the workers put on their cross safety belts and attach the safety ropes, they enter the entrance guardrail 30 from the cantilever beam 20 and then enter the lower working platform 50 through the central passage 40. The tensioning equipment is placed on the working platform 50, and the tie rod is tightened, thus ensuring safety.

[0033] In one embodiment, the fixed frame end 10 is generally rectangular in shape, the upper beam surface of the cantilever beam 20 is horizontal, the frame surface formed by the fixed frame end 10 is in contact with the upper beam surface of the cantilever beam 20, one end of the fixed frame end 10 extends horizontally, and the entrance guardrail 30 is fixed at the extended end of the fixed frame end 10.

[0034] In the above embodiments, regarding platform stability, the fixed frame end 10 adopts a rectangular frame design, forming a large-area contact with the horizontal upper beam surface of the cantilever beam 20. Compared with conventional point or line connection methods, this significantly increases the contact area, allowing the platform load to be more evenly distributed to the cantilever beam structure. Mechanical simulation verification shows that this structural design reduces the contact stress between the platform and the cantilever beam, effectively reducing local stress concentration and enhancing the structural stability of the platform under complex stress conditions, thus reducing the risk of structural deformation due to uneven stress. Simultaneously, the horizontal extension design at one end of the fixed frame end 10 changes the traditional platform center of gravity distribution pattern, forming a more reasonable lever arm balance system, further improving the platform's anti-overturning ability during dynamic operations. In strong wind environments, the platform's sway amplitude is reduced compared to traditional designs, ensuring operational safety. Regarding personnel safety and convenience, the entrance guardrail 30 is fixed to the extended end of the fixed frame end 10, forming an independent and enclosed safety passage entrance. This layout ensures that workers remain within the protective perimeter of the guardrails throughout their entry and exit from the platform, avoiding the risk of falls that is common with traditional open entrances. Furthermore, the extended design brings the entrance closer to the work area, shortening the distance personnel must travel from the main bridge structure to the work platform, reducing their exposure time without protection, and improving entry and exit efficiency. In addition, this structural design provides clear guidance for workers, reducing the risk of misoperation due to unclear pathways, further enhancing the safety and convenience of platform use.

[0035] In one embodiment, see Figures 1 to 3 A safety screw 12 is provided on the fixed frame end 10, and a pipe body 21 for the hanging rod to pass through is provided on the upper beam surface of the cantilever beam 20. The safety screw 12 is horizontal and is detachably connected to the fixed frame end 10. The side wall of the safety screw 12 abuts against the outer wall of the pipe body 21.

[0036] In the above embodiments, regarding connection stability and structural safety, the safety screw 12 is horizontally and detachably connected to the fixed frame end 10 and abuts against the outer wall of the pipe body 21 through its side wall, forming a unique "surface contact-point reinforcement" composite connection system. Compared to the traditional connection method that relies solely on the fixed frame end and the upper beam surface of the cantilever beam, this structure utilizes the lateral clamping force between the safety screw and the pipe body to effectively limit the platform's horizontal displacement, thereby improving the platform's resistance to lateral wind loads. Simultaneously, the detachable design of the safety screw allows for flexible adjustment of the installation position according to different cantilever beam spacing and pipe body dimensions, adapting to various bridge construction scenarios, avoiding the risk of connection failure due to differences in bridge structures, ensuring the platform remains stable under complex working conditions, and reducing safety hazards caused by structural instability. The detachable connection method of the safety screw 12 makes the platform installation and disassembly process simpler and more efficient. Construction personnel only need to tighten or loosen the safety screw to quickly complete the fixing and separation of the platform from the cantilever beam. Compared to traditional complex anchoring or welding operations, the installation time for a single platform is shortened, significantly improving construction efficiency. In addition, this structural design eliminates the need for additional drilling or pre-embedding of the cantilever beams, reducing damage to the main bridge structure, conforming to the concept of green construction, and lowering the later bridge maintenance costs.

[0037] In one specific embodiment, see Figure 5 The fixing end 10 includes at least two fixing bars 11, which are arranged in parallel and spaced apart, and the tube body 21 is located between the two fixing bars 11. The fixing bars 11 are respectively provided with through holes 111 for the safety screw 12 to pass through.

[0038] In one embodiment, the fixing bar is an I-beam, which enables the fixing end 10 to withstand extremely high torque, and nuts can be provided at both ends of the safety screw 12 to prevent the safety screw 12 from moving out of the through hole 111 at will.

[0039] In one embodiment, the entrance guardrail 30 is generally in the form of a cuboid frame. One side frame and the top frame of the entrance guardrail 30 are open. One side frame is connected to one end of the fixing frame 10. The extended ends of the two fixing strips 11 are fixed to the bottom of the frame of the entrance guardrail 30. An entrance opening 31 is provided at the bottom of the frame of the entrance guardrail 30.

[0040] In one embodiment, reinforcing bars 32 are provided on both sides of the entrance guardrail 30. The reinforcing bars 32 are I-beams and extend vertically. The reinforcing bars 32 are placed on both sides of the cantilever beam 20 to form a locking mechanism. The lower end of the reinforcing bars 32 extends to be fixed to the lower working platform 50.

[0041] In one embodiment, to facilitate the entry and exit of workers, the central passage 40 includes a vertical climbing frame 41, the upper end of which is fixed to the bottom of the entrance guardrail 30, and the entrance 31 is exposed at the upper end of the vertical climbing frame 41.

[0042] In one embodiment, to further ensure safety, guardrail hoops 42 are provided on the vertical climbing frame 41. Multiple sets of guardrail hoops 42 are arranged at intervals along the length of the vertical climbing frame 41, and the multiple sets of guardrail hoops 42 constitute a rear safety fence.

[0043] In one embodiment, the lower working platform 50 is generally arranged in the form of a horizontally arranged cuboid frame, the upper frame of the lower working platform 50 is open, and the upper frame of the lower working platform 50 is connected to the lower end of the central channel 40.

[0044] In one embodiment, to provide reliable support for equipment and personnel and ensure safety, the bottom of the lower working platform 50 is provided with a support guard plate 51, which is a detachable steel plate.

[0045] In one embodiment, to facilitate tensioning operations, the upper frame of the lower working platform 50 extends to the area below the lower beam surface of the cantilever beam 20.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An attached bridge suspender tensioning operation platform, characterized in that, include: The fixed frame end (10) is attached to the upper beam surface of the cantilever beam (20) and forms a surface-to-surface connection with the cantilever beam (20); An entrance guardrail (30) is fixedly connected to the fixed frame end (10), and workers enter through the entrance guardrail (30); The central passage (40) is connected to the entrance guardrail (30) and extends downwards, through which workers can pass up and down; The lower working platform (50) is connected to the lower end of the central passage (40). The lower working platform (50) constitutes a support platform for workers and equipment and is suspended below the lower beam surface of the cantilever beam (20).

2. The attached bridge suspender tensioning platform according to claim 1, characterized in that, The fixed frame end (10) is in the shape of a rectangular frame. The upper beam surface of the cantilever beam (20) is horizontal. The frame surface formed by the fixed frame end (10) is in contact with the upper beam surface of the cantilever beam (20). One end of the fixed frame end (10) extends horizontally. The entrance guardrail (30) is fixed at the extended end of the fixed frame end (10).

3. The attached bridge suspender tensioning platform according to claim 2, characterized in that, A safety screw (12) is provided on the fixed end (10), and a tube (21) for the hanging rod to pass through is provided on the upper beam surface of the cantilever beam (20). The safety screw (12) is horizontal and forms a detachable connection with the fixed end (10). The side wall of the safety screw (12) abuts against the outer wall of the tube (21).

4. The attached bridge suspender tensioning platform according to claim 3, characterized in that, The fixed frame end (10) includes at least two fixing bars (11), which are arranged in parallel and spaced apart, and the tube body (21) is located between the two fixing bars (11). The fixing bars (11) are respectively provided with through holes (111) for the safety screw (12) to pass through.

5. The attached bridge suspender tensioning platform according to claim 4, characterized in that, The entrance guardrail (30) is in the form of a rectangular frame. One side and the top side of the entrance guardrail (30) are open. One side frame is connected to one end of the fixed frame end (10). The extended ends of the two fixing strips (11) are fixed to the bottom of the frame of the entrance guardrail (30). An entrance opening (31) is provided at the bottom of the frame of the entrance guardrail (30).

6. The attached bridge suspender tensioning platform according to claim 5, characterized in that, The central passage (40) includes a vertical climbing frame (41), the upper end of which is fixed to the bottom of the entrance railing (30), and the entrance (31) is exposed at the upper end of the vertical climbing frame (41).

7. The attached bridge suspender tensioning platform according to claim 6, characterized in that, The vertical climbing frame (41) is provided with guardrail hoops (42), and multiple sets of guardrail hoops (42) are arranged at intervals along the length of the vertical climbing frame (41), and multiple sets of guardrail hoops (42) constitute a rear safety fence.

8. The attached bridge suspender tensioning platform according to claim 1, characterized in that, The lower working platform (50) is a horizontally arranged cuboid frame structure. The upper frame of the lower working platform (50) is open and connected to the lower end of the central channel (40).

9. The attached bridge suspender tensioning platform according to claim 8, characterized in that, The bottom of the lower working platform (50) is provided with a support guard plate (51).

10. The attached bridge suspender tensioning platform according to claim 8, characterized in that, The upper frame of the lower working platform (50) extends to the position below the lower beam surface of the cantilever beam (20).

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