Adjustable network bridge hoisting support and bridge mounting system

Abstract

The utility model discloses an adjustable network bridge hoisting support and a bridge frame installation system. The adjustable network bridge hoisting support comprises an angle adjusting frame, a height adjusting frame and an L-shaped rest stand connected with a bridge frame. A fixing hole and an arc-shaped groove are formed in the vertical adjusting plate, and the arc-shaped groove gradually changes in the height position and the horizontal position at the same time; the height adjusting frame comprises C-shaped steel, and a plurality of connecting holes which are longitudinally distributed are formed in a back plate of the C-shaped steel; a first bolt respectively penetrates through the first connecting hole and the fixing hole of the vertical adjusting plate; the second bolt penetrates through the second connecting hole and one position of the arc-shaped groove in the vertical adjusting plate and adjusts the vertical direction of the C-shaped steel. The L-shaped shelf comprises a vertical connecting part and a transverse connecting part; the vertical connecting part is connected to the lower end of the C-shaped steel in a height-adjustable manner through a third bolt; through cooperative work of the angle adjusting frame and the height adjusting frame, a network bridge can be rapidly and accurately installed on the uneven top of a building, and the stability of equipment and the uniformity of signal coverage are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of brackets for installing bridge frames, and in particular to an adjustable lifting bracket for installing bridge frames. When the top of a building or a tunnel is uneven, the bridge frame can be lifted by using the adjustable bracket to keep the extension of the bridge frame in a horizontal position. Background Art

[0002] A cable bridge is a device used for data transmission, connecting two or more networks via wireless signals to achieve high-speed data transmission. Cable bridges are often installed between buildings or in difficult locations such as mountainous areas, providing stable network connections without disrupting the environment. They are widely used in applications requiring long-distance data transmission, such as campus networks, enterprise network expansion, and security monitoring systems.

[0003] A utility model patent, authorized with publication number "CN218679257U," discloses a communication bridge bracket comprising a mounting bracket, a mounting portion, a drive mechanism, and a locking mechanism. The bracket can be mounted on an external communication pole. The drive mechanism drives the mounting portion in vertical motion, and the mounting portion is used to mount the communication bridge. This technical approach allows for a certain degree of position adjustment after installation, but does not offer extensive adjustability.

[0004] When the top of a building or tunnel is uneven, the existing bridge bracket cannot keep the bridge in a level state, which will affect the quality and stability of the wireless signal. Therefore, there is an urgent need to develop an adjustable lifting bracket to facilitate cable laying and maintenance. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an adjustable network bridge hanging bracket that can be installed on the top of an uneven building, ensuring that the network bridge extends in the horizontal direction, thereby facilitating the laying and maintenance of cables, while also ensuring the coverage effect of wireless signals.

[0006] The core technical concept of this utility model is to provide an adjustable network bridge hanging bracket. Through the coordinated work of the angle adjustment bracket and the height adjustment bracket, the network bridge can be installed quickly and accurately on the top of uneven buildings, ensuring the stability of the equipment and the uniformity of signal coverage.

[0007] The technical solution adopted by the utility model to solve the above technical problems is: an adjustable bridge hoisting bracket, including an angle adjustment bracket for connecting to the top surface of the building, a height adjustment bracket and an L-shaped shelf bracket for connecting the bridge;

[0008] The angle adjustment frame includes a horizontal top plate and a vertical adjustment plate, wherein the horizontal top plate is used to connect to the top surface of the building; the vertical adjustment plate is provided with a fixing hole and an arc-shaped groove, and the arc-shaped groove changes gradually in both height and horizontal positions;

[0009] The height adjustment frame includes a C-shaped steel, and a plurality of longitudinally distributed connection holes are provided on the back plate of the C-shaped steel; a first bolt is respectively passed through the first connection hole and the fixing hole of the vertical adjustment plate; a second bolt is respectively passed through the second connection hole and one of the arc-shaped slots on the vertical adjustment plate, and adjusts the vertical direction of the C-shaped steel;

[0010] The L-shaped shelf includes a vertical connecting portion and a horizontal connecting portion;

[0011] The vertical connection part is connected to the lower end of the C-shaped steel in an adjustable height through a third bolt; the horizontal connection part is used to place the bridge frame.

[0012] A further preferred technical solution of the utility model is: two top plate connecting holes are provided on the transverse top plate;

[0013] A further preferred technical solution of the present invention is: a spring nut is provided in the notch in the C-shaped steel, and the third bolt is connected to the spring nut after passing through the connecting hole of the vertical connecting part.

[0014] A further preferred technical solution of the present invention is: the arc-shaped groove includes a starting end and a terminal end, the starting end and the fixing hole are at the same height position, and the terminal end and the fixing hole are on the same vertical line.

[0015] A further preferred technical solution of the present invention is: the transverse connecting portion includes a bottom wall and two side walls, and the side walls are provided with slots for the longitudinal ribs of the bridge to be snapped into.

[0016] A further preferred technical solution of the present invention is as follows: the spring nut includes a nut block and a spring connected to the back of the nut block, and a vertical limiting structure is provided between the side of the nut block and the front folding edge of the C-shaped steel, so that the spring nut can be vertically adjusted along the front folding edge of the C-shaped steel and limited to a preset height;

[0017] The vertical limiting structure includes a first limiting corrugation on the side of the nut block and a second limiting corrugation on the front folding edge, and the second limiting corrugation is distributed along the vertical length direction of the front folding edge.

[0018] A further preferred technical solution of the present invention is: the spring nut comprises a nut block and a spring connected to the back of the nut block;

[0019] A vertical limiting structure is provided between the side of the nut block and the front folding edge of the C-shaped steel;

[0020] The spring always presses the nut block outward, so that the spring nut can be kept at a preset height by the vertical limiting structure during the process of being fastened with the third screw.

[0021] Another technical topic: a bridge installation system, comprising a bridge hoisting bracket and a bridge; the bridge is welded by multiple longitudinal ribs and multiple transverse ribs;

[0022] The bridge hoisting bracket includes the angle adjustment bracket, the height adjustment bracket and the L-shaped shelf bracket connected to the bridge;

[0023] The angle adjustment frame includes a horizontal top plate and a vertical adjustment plate, wherein the horizontal top plate is used to connect to the top surface of the building; the vertical adjustment plate is provided with a fixing hole and an arc groove;

[0024] The height adjustment frame includes a C-shaped steel, and a plurality of longitudinally distributed connection holes are provided on the back plate of the C-shaped steel; a first bolt is respectively passed through the first connection hole and the fixing hole of the vertical adjustment plate; a second bolt is respectively passed through the second connection hole and one of the arc-shaped slots on the vertical adjustment plate, and adjusts the vertical direction of the C-shaped steel;

[0025] The L-shaped shelf includes a vertical connecting portion and a horizontal connecting portion;

[0026] The vertical connection part is connected to the lower end of the C-shaped steel; the horizontal connection part is used to place the bridge frame.

[0027] A further preferred technical solution of the present invention is: the arc-shaped groove includes a starting end and a terminal end, the starting end and the fixing hole are at the same height position, and the terminal end and the fixing hole are on the same vertical line.

[0028] A further preferred technical solution of the present invention is that: the vertical connection portion is height-adjustably connected to the lower end of the C-shaped steel by a third bolt;

[0029] A spring nut is provided in the notch in the C-shaped steel, and the third bolt is connected to the spring nut after passing through the connection hole of the vertical connection part;

[0030] The spring nut includes a nut block and a spring connected to the back of the nut block, and a vertical limiting structure is provided between the side of the nut block and the front folding edge of the C-shaped steel;

[0031] The spring always presses the nut block outward, so that the spring nut can be kept at a preset height by the vertical limiting structure during the process of being fastened with the third screw.

[0032] A further preferred technical solution of the present invention is: the transverse connecting portion includes a bottom wall and two side walls, and the side walls are provided with slots for the longitudinal ribs of the bridge to be snapped into.

[0033] A further preferred technical solution of the present invention is: the vertical limiting structure includes a first limiting corrugation on the side of the nut block, and a second limiting corrugation on the front fold edge, and the second limiting corrugation is distributed along the vertical length direction of the front fold edge.

[0034] Compared with the existing technology, the advantages of the present invention are: this technical solution effectively addresses the challenge of installing a bridge on the top of uneven buildings through the innovative design of an adjustable bridge hoisting bracket, ensuring that the bridge can extend horizontally and evenly cover the wireless signal. This technical means enables the horizontal top plate to stably fit the surface of buildings of different heights through the coordinated work of the angle adjustment frame and the height adjustment frame. At the same time, the fixing holes and arc grooves on the vertical adjustment plate provide additional angle adjustment capabilities to adapt to different installation environments. The combination of the L-shaped shelf and the spring nut provides stable support and flexible height adjustment for the bridge. Through the coordinated use of the first bolt, the second bolt and the third bolt, the C-shaped steel can be accurately positioned and adjusted in height, enhancing the stability and reliability of the entire system. This technical means not only facilitates the laying and maintenance of cables and improves construction efficiency, but also meets the high standards of installation accuracy and signal quality required by modern communication facilities, ensuring the rapid and accurate installation of the bridge in complex building environments.

[0035] In other words, through the coordination of the horizontal top plate and vertical adjustment plate, as well as the clever use of curved slots, the bridge hoisting bracket can achieve gradual changes in height and horizontal position, allowing the angle adjustment bracket to be fixed at any desired angle, ensuring that the horizontal top plate remains firmly in place with the target fixing surface. This technical approach significantly improves the flexibility and adaptability of the installation process, especially when working with different building roof structures, ensuring precise alignment and stable installation of the bridge equipment.

[0036] Specifically, the multiple connecting holes on the C-shaped steel back plate are used in conjunction with the first bolt to achieve the fixation of the C-shaped steel and the angle adjustment frame, and the coordinated use of the C-shaped steel back plate connecting holes, the arc groove and the second bolt enables the angle adjustment frame to be fixed at the desired angle, and the horizontal top plate can be oriented toward the target fixing plane and stably fitted.

[0037] The combination of the third bolt and spring nut allows the vertical connection portion of the L-shaped shelf 30 to be height-adjustably connected to the lower end of the C-shaped steel. This technical approach simplifies the installation process and improves installation efficiency. Furthermore, the entire bridge hoisting bracket is designed for ease of maintenance, allowing workers to easily access cables or equipment within the bridge when maintenance or inspection is required, thereby improving both convenience and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0039] Figure 1 This is a schematic diagram of the installation structure of the bridge installation system;

[0040] Figure 2 This is a schematic diagram of the installation status of the bridge mounting system;

[0041] Figure 3 This is a schematic diagram of the overall structure of the bridge hoisting bracket;

[0042] Figure 4 Schematic diagram of the local structure of the bridge hoisting bracket Figure 1 ;

[0043] Figure 5 Schematic diagram of the local structure of the bridge hoisting bracket Figure 2 ;

[0044] Figure 6 Schematic diagram of the overall structure of the angle adjustment frame Figure 1 ;

[0045] Figure 7 Schematic diagram of the overall structure of the angle adjustment frame Figure 2 ;

[0046] Figure 8 for Figure 5 A magnified view of the local structure at point A. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0048] It should be noted that like reference numerals denote like items in the following drawings, and therefore, once an item is defined in one drawing, it will not be further defined or explained in the subsequent drawings.

[0049] like Figure 1 and Figure 2As shown, the bridge mounting system 100 includes a bridge hoisting bracket 101 and a bridge 102. The bridge 102 is welded together with multiple longitudinal ribs a1 and multiple transverse ribs a2. The bridge hoisting bracket 101 securely holds the bridge 102 in place. The longitudinal ribs a1 and transverse ribs a2 are welded together. The longitudinal ribs a1 provide the primary support for the bridge, while the transverse ribs a2 increase the bridge's stability and load-bearing capacity. This structural design evenly distributes the load on the bridge 102, reducing deformation or damage caused by concentrated weight.

[0050] The entire bridge mounting system 100 of this technical solution fully considers the needs of modern communication networks. It not only provides a stable physical support platform, but also allows for rapid and flexible installation and expansion to adapt to ever-changing technological advancements and network upgrade requirements. Through this system, communication lines can be effectively managed and protected, ensuring the stability and security of data transmission.

[0051] The bridge mounting bracket 101 includes an angle adjustment bracket 10, a height adjustment bracket 20, and an L-shaped bracket 30 for connecting the bridge. The angle adjustment bracket 10 comprises a horizontal top plate 12 for connection to the building's ceiling and a vertical adjustment plate 11. The horizontal top plate 12 is provided with fixing holes b and an arc-shaped slot c. The angle adjustment bracket 10 allows users to adjust the angle based on the actual conditions of the building's roof.

[0052] The horizontal top plate 12 is directly connected to the top of the building, providing a stable base. The vertical adjustment plate 11 can be fine-tuned at an angle through the fixing holes b and the arc-shaped slots c to adapt to different installation angles.

[0053] The height adjustment frame 20 comprises a C-shaped steel 21, with multiple longitudinally distributed connection holes 22 defined on its back plate. A first bolt t1 passes through the first connection hole 22 and the fixing hole of the vertical adjustment plate 11. A second bolt t2 passes through the second connection hole 22 and one of the arc-shaped slots c on the vertical adjustment plate 11, adjusting the vertical orientation of the C-shaped steel 21. The multiple connection holes 22 on the back plate of the height adjustment frame 20 provide the user with height adjustment capabilities. The use of the first and second bolts t1 and t2 allows for precise control of the height and vertical orientation of the C-shaped steel 21.

[0054] The L-shaped support frame 30 comprises vertical connectors 31 and transverse connectors 32, which together form the support structure for the bridge 102. The vertical connectors 31 are connected to the lower end of the C-shaped steel 21, while the transverse connectors 32 support the bridge 102. This technical approach not only provides stable support but also allows the bridge 102 to be expanded in length to accommodate different installation requirements.

[0055] The transverse top plate 12 is a key component of the bridge mounting bracket 101. Its function is to connect directly to the top of the building to provide stable foundation support. Two top plate connection holes 121 are provided on the transverse top plate 12. These holes are designed to allow for a secure connection to the building's roof using bolts or other fasteners.

[0056] Preferably, the top plate connection hole 121 is a waist-shaped hole, which can allow for centering errors when installing bolts or nuts to a certain extent, thereby making the assembly process more flexible and convenient; in addition, the waist-shaped hole can reduce stress concentration at the connection point. Compared with sharp corners, the arc transition of the waist-shaped hole can more effectively disperse stress, thereby improving the durability of the structure.

[0057] Furthermore, a spring nut 40 is provided in a notch within the C-shaped steel 21. A third bolt t3 passes through the connection hole r of the vertical connection portion 31 and is connected to the spring nut 40. The vertical connection portion 31 engages the spring nut 40 via the third bolt t3, allowing the vertical connection portion 31 to be height-adjustably connected to the lower end of the C-shaped steel 21.

[0058] The above technical means are particularly suitable for applications requiring quick adjustment at different heights or under different load conditions. The presence of the spring nut 40 not only simplifies the installation process but also allows for fine-tuning of the height without disassembling the entire bracket, which is crucial for ensuring the levelness and stability of the bridge equipment.

[0059] It should also be noted that the second bolt t2 passes through the second connection hole 22 on the back plate of the C-shaped steel 21 to engage the arcuate groove c on the vertical adjustment plate 11, thereby securing the angle adjustment frame 10 at a desired angle. At this angle, the horizontal top plate 12 of the angle adjustment frame 10 can be stably aligned with the target fixing surface for securement. Ultimately, the angle adjustment frame 10 can be secured at multiple preset angles, ensuring that the horizontal top plate 12 can stably adhere to the target fixing surface.

[0060] Preferably, the arcuate slot c includes a starting end c1 and a terminal end c2. The starting end c1 is at the same height as the fixing hole b, and the terminal end c2 is on the same vertical line as the fixing hole b. This precise geometric arrangement of the starting end c1 and the fixing hole b, while the terminal end c2 is collinear with the fixing hole b, provides a high degree of adjustment accuracy and repeatability. When the second bolt t2 passes through the connecting hole 22 and engages the arcuate slot c, it not only provides a secure connection but also allows for precise angular adjustment of the angle adjustment bracket 10 at different locations to accommodate various installation environments.

[0061] In other words, it provides a simple and efficient method for adjusting the angle of the angle adjustment bracket 10, ensuring flexibility and precision during installation. Whether on a horizontal or inclined building top, it can easily achieve accurate installation and fixation of the bridge device, thereby improving the stability and reliability of the entire system.

[0062] Furthermore, the transverse connecting portion 32 of the present invention comprises a bottom wall 321 and two side walls 322, providing stable support for the longitudinal ribs of the bridge 102. The specially designed slots 323 on the side walls 322 allow the longitudinal ribs of the bridge 102 to be deeply engaged. This fit not only ensures a tight connection between the bridge and the bracket but also provides additional vertical support, thereby enhancing the stability and durability of the entire structure.

[0063] More specifically, the spring nut 40 consists of a nut block 41 and a spring 42 connected to its back. This structural design allows the spring nut 40 to be vertically adjusted along the front folded edge 211 of the C-shaped steel 21 and is constrained at a preset height by a vertical limit structure v, thereby ensuring accuracy and flexibility during installation.

[0064] The vertical limiting structure v is more sophisticated, comprising a first limiting corrugation on the side of the nut block 41 and a second limiting corrugation on the front fold edge 211. This dual-corrugation design not only provides stable vertical support but also allows for fine-tuning of the spring nut 40 within a certain range to accommodate various installation requirements. The second limiting corrugation runs along the vertical length of the front fold edge 211, further enhancing structural stability and adjustment accuracy.

[0065] A threaded hole is defined in the center of the nut block 41 to accommodate the third screw t3. A spring 42 maintains a constant outward pressure against the nut block 41, ensuring that even with repeated use or external forces, the spring nut 40 remains at the preset height, tightly fitting the third screw t3 for a secure connection.

[0066] like Figure 2 As shown, when faced with the challenge of uneven building tops, the network bridge hoisting bracket 101 of the present invention adapts to this complexity through two key adjustment mechanisms: a height adjustment bracket 20 and an angle adjustment bracket 10. The height adjustment bracket 20 allows the user to adjust the bracket to the varying heights of the building tops, ensuring that all transverse connections 32 are aligned. This feature is crucial for maintaining the horizontal extension of the bridge 102, as it provides a stable and uniform platform for even cable laying and subsequent maintenance.

[0067] The angle adjustment bracket 10 further enhances the adaptability of the bracket, allowing the horizontal top plate 12 to be securely attached to and fixed to the inclined building wall. This adjustability ensures that the bridge device can be firmly installed even on tilted or irregular surfaces, thereby maintaining the quality and coverage of the wireless signal.

[0068] By synergizing these two adjustment mechanisms, the network bridge mounting bracket 101 of the present invention not only improves installation flexibility and efficiency, but also ensures high-performance operation of the communication system. This technical approach enables optimal signal transmission in a variety of environments, from between urban high-rise buildings to the rugged terrain of mountainous areas, ensuring stable network signal and coverage, meeting the stringent reliability and stability requirements of modern communication networks.

[0069] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "back," "left," "right," "inner," and "outer" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used solely to facilitate understanding and have no other directional meanings, and should not be construed as limitations on this utility model.

[0070] The adjustable bridge hoisting bracket and bridge mounting system provided by the present invention are introduced. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are only intended to facilitate understanding of the present invention and its core concept. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. Adjustable bridge hanging bracket, characterized by: It includes an angle adjustment frame, a height adjustment frame and an L-shaped shelf for connecting to the top surface of the building; The angle adjustment frame includes a horizontal top plate and a vertical adjustment plate, wherein the horizontal top plate is used to connect to the top surface of the building; the vertical adjustment plate is provided with a fixing hole and an arc-shaped groove, and the arc-shaped groove changes gradually in both height and horizontal positions; The height adjustment frame includes a C-shaped steel, and a plurality of longitudinally distributed connection holes are provided on the back plate of the C-shaped steel; a first bolt is respectively passed through the first connection hole and the fixing hole of the vertical adjustment plate; a second bolt is respectively passed through the second connection hole and one of the arc-shaped slots on the vertical adjustment plate, and adjusts the vertical direction of the C-shaped steel; The L-shaped shelf includes a vertical connecting portion and a horizontal connecting portion; The vertical connection portion is height-adjustably connected to the lower end of the C-shaped steel through a third bolt; the transverse connection portion is used to place the bridge frame; A spring nut is provided in the notch in the C-shaped steel, and the third bolt is connected to the spring nut after passing through the connection hole of the vertical connection part.

2. The adjustable bridge hanging bracket according to claim 1, characterized in that: Two top plate connecting holes are provided on the transverse top plate.

3. The adjustable bridge hanging bracket according to claim 1, characterized in that: The arc-shaped slot includes a starting end and a terminal end, the starting end is at the same height as the fixing hole, and the terminal end is on the same vertical line as the fixing hole.

4. The adjustable bridge hanging bracket according to claim 1, characterized in that: The transverse connecting portion includes a bottom wall and two side walls, and the side walls are provided with slots for the longitudinal ribs of the bridge frame to be snapped into.

5. The adjustable bridge hanging bracket according to claim 1, characterized in that: The spring nut includes a nut block and a spring connected to the back of the nut block. A vertical limiting structure is provided between the side of the nut block and the front folding edge of the C-shaped steel, so that the spring nut can be vertically adjusted along the front folding edge of the C-shaped steel and limited to a preset height; The vertical limiting structure includes a first limiting corrugation on the side of the nut block and a second limiting corrugation on the front folding edge, and the second limiting corrugation is distributed along the vertical length direction of the front folding edge.

6. The adjustable bridge hanging bracket according to claim 1, characterized in that: The spring nut includes a nut block and a spring connected to the back of the nut block; A vertical limiting structure is provided between the side of the nut block and the front folding edge of the C-shaped steel; The spring always presses the nut block outward, so that the spring nut can be kept at a preset height by the vertical limiting structure during the process of being fastened with the third screw.

7. Bridge installation system, characterized by Including bridge hoisting bracket and bridge frame; The bridge is formed by welding a plurality of longitudinal ribs and a plurality of transverse ribs; The bridge hoisting bracket includes an angle adjustment bracket, a height adjustment bracket and an L-shaped shelf bracket connected to the bridge; The angle adjustment frame includes a horizontal top plate and a vertical adjustment plate, wherein the horizontal top plate is used to connect to the top surface of the building; the vertical adjustment plate is provided with a fixing hole and an arc groove; The height adjustment frame includes a C-shaped steel, and a plurality of longitudinally distributed connection holes are provided on the back plate of the C-shaped steel; a first bolt is respectively passed through the first connection hole and the fixing hole of the vertical adjustment plate; a second bolt is respectively passed through the second connection hole and one of the arc-shaped slots on the vertical adjustment plate, and adjusts the vertical direction of the C-shaped steel; The L-shaped shelf includes a vertical connecting portion and a horizontal connecting portion; The vertical connection part is connected to the lower end of the C-shaped steel; the horizontal connection part is used to place the bridge; The vertical connection portion is height-adjustably connected to the lower end of the C-shaped steel by a third bolt; A spring nut is provided in the notch in the C-shaped steel, and the third bolt is connected to the spring nut after passing through the connection hole of the vertical connection part.

8. The bridge mounting system according to claim 7, characterized in that: The arc-shaped slot includes a starting end and a terminal end, the starting end is at the same height as the fixing hole, and the terminal end is on the same vertical line as the fixing hole.

9. The bridge mounting system according to claim 7, characterized in that: The spring nut includes a nut block and a spring connected to the back of the nut block, and a vertical limiting structure is provided between the side of the nut block and the front folding edge of the C-shaped steel; The spring always presses the nut block outward, so that the spring nut can be kept at a preset height by the vertical limiting structure during the process of being fastened with the third screw.

10. The bridge mounting system according to claim 7, characterized in that: The transverse connecting portion includes a bottom wall and two side walls, and the side walls are provided with slots for the longitudinal ribs of the bridge frame to be snapped into.

11. The bridge mounting system according to claim 9, characterized in that: The vertical limiting structure includes a first limiting corrugation on the side of the nut block and a second limiting corrugation on the front folding edge, and the second limiting corrugation is distributed along the vertical length direction of the front folding edge.

Images