Steel box arch vertical turning bracket lug

Abstract

The utility model discloses a steel box arch vertical rotation bracket lug, including being used for with the bracket support of arch rib section welding connection and with the vertical installation lug of bracket support connection, vertical installation lug includes the pin shaft for unhooking connection and the connecting piece of both ends of bracket support and pin shaft all connection, compared with prior art, mainly by pin shaft, two connecting pieces and bracket support constitute, it has enough structural stability, and in the hoisting process, unhooking hang and set connection on pin shaft, and bracket support is welded on arch rib section, has enough connection stability, improves the security of arch rib section in the hoisting process.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a steel box arch vertical rotating bracket lifting lug. Background Technology

[0002] Arch rib construction is the most critical step in arch bridge construction, directly determining the overall structural performance and alignment quality of the bridge. Especially for polygonal steel box arch bridges, the arch ribs are typically installed using a segmented hoisting method. This method faces a series of technical challenges, including handling large loads, requiring high installation precision, and struggling to accurately control the hoisting direction and angle.

[0003] In the actual vertical rotation and hoisting process, the hoisting angles of different arch rib segments often differ due to their spatial orientation and structural design requirements, and some arch rib segments may also have specific inward inclination angles. Furthermore, effectively controlling the spatial movement trajectory of the arch rib segments during vertical rotation, aerial posture adjustment, and precise positioning to prevent collisions or excessive additional stress is a core challenge in ensuring construction safety and quality.

[0004] Currently, two lifting devices are used in conjunction to lift the arch rib segment. Four annular lifting lugs are welded onto the arch rib segment to connect one-to-one with the four shackles of the two lifting devices. The four shackles are connected one-to-one to the two ends of the lifting ropes of the two lifting devices. During the lifting process, the height of the four annular lifting lugs is controlled by the two lifting devices to adjust the posture of the arch rib segment.

[0005] The annular lifting lug forms a connecting side that is welded to the outer wall of the arch rib segment. Its stability during the hoisting process is relatively poor, posing a safety hazard. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a steel box arch vertical rotating bracket lifting lug to solve the problem that the cooperation between the annular lifting lug and the arch rib segment in the existing technology results in relatively poor stability during the hoisting process and poses a safety hazard.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a steel box arch vertical bracket lifting lug, comprising a bracket support for welding and connecting with the arch rib segment and a vertical lifting lug connected to the bracket support, wherein the vertical lifting lug comprises a pin for shackle connection and a connector that is connected to both ends of the bracket support and the pin.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The steel box arch vertical bracket lifting lug is mainly composed of a pin, two connecting parts, and a bracket support, which has sufficient structural stability. During the hoisting process, the shackle is attached to the pin, and the bracket support is welded to the arch rib segment, which has sufficient connection stability and improves the safety of the arch rib segment during the hoisting process. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0011] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0012] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 3 ;

[0013] Figure 4 This is a schematic diagram of a steel box arch vertical bracket lifting lug welded to an arch rib segment in one embodiment of the present invention.

[0014] The reference numerals in the accompanying drawings include: bracket 1, first connecting plate 11, second connecting plate 12, third connecting plate 13, first support reinforcing plate 14, second support reinforcing plate 15, vertical lifting lug 2, pin 21, connector 22, end plate 221, first lifting lug reinforcing plate 222, and second lifting lug reinforcing plate 223. Detailed Implementation

[0015] The present invention will be further described in detail below through specific embodiments:

[0016] like Figure 1 , Figure 2 as well as Figure 3 As shown in the figure, this utility model embodiment proposes a steel box arch vertical rotating bracket lifting lug, including a bracket support 1 for welding and connecting with the arch rib segment and a vertical lifting lug 2 connected to the bracket support 1. The vertical lifting lug 2 includes a pin 21 for shackle connection and a connector 22 that is connected to both ends of the bracket support 1 and the pin 21.

[0017] The steel box arch vertical rotating bracket lifting lug is mainly composed of a pin 21, two connecting parts 22 and a bracket support 1, which has sufficient structural stability. During the hoisting process, the shackle is attached to the pin 21 and the bracket support 1 is welded to the arch rib segment, which has sufficient connection stability and improves the safety of the arch rib segment during the hoisting process.

[0018] To better understand the vertical bracket lug of the steel box arch, the connecting piece 22 and the bracket support 1 will be described in detail below.

[0019] First is the corbel support 1.

[0020] like Figures 1-4 As shown, according to another embodiment of the present invention, in the steel box arch vertical rotating bracket lifting lug, when the bracket support 1 is welded to the arch rib segment, a first connecting surface for fitting with the arch rib segment is cut on the bracket support 1, and the inclination angle of the first connecting surface is the same as the installation angle of the arch rib segment.

[0021] Because the time spent hoisting the arch rib segment is relatively short, while the time spent adjusting the arch rib segment's posture to the required installation angle after hoisting it to the desired position is relatively long, designing the inclination angle of the first connecting surface to be the same as the installation angle of the arch rib segment ensures that the corbel support 1 is horizontally arranged during the installation process, and the pin 21 also remains horizontal. The pin 21 and the shackle cooperate well, and the force on the vertical rotating corbel lifting lug of the steel box arch is relatively concentrated, making it more stable.

[0022] Specifically, the corbel support 1 includes a first connecting plate 11, a second connecting plate 12, and a third connecting plate 13. The first connecting plate 11 is connected to the connector 22. The second connecting plate 12 is connected to the first connecting plate 11 and serves as one end for cutting when the corbel support 1 is welded to the arch rib segment. The third connecting plate 13 is connected between the first connecting plate 11 and the second connecting plate 12.

[0023] The first connecting plate 11, the second connecting plate 12, and the third connecting plate 13 cooperate to form a stable structure, which facilitates connection with the arch rib segment and the connecting piece 22; here, the first connecting plate 11, the second connecting plate 12, and the third connecting plate 13 are arranged in an "I" shape.

[0024] To improve the structural stability of the bracket support 1, the bracket support 1 further includes a first support reinforcing plate 14. Multiple first support reinforcing plates 14 are provided and connected between the first connecting plate 11, the second connecting plate 12, and the third connecting plate 13. For proper distribution, the multiple first support reinforcing plates 14 are distributed on different sides of the third connecting plate 13, and the first support reinforcing plates 14 on the same side of the third connecting plate 13 are spaced apart along the length of the first connecting plate 11.

[0025] In this embodiment, the number of the first support reinforcing plates 14 is shown as four. Two first support reinforcing plates 14 are distributed on both sides of the third connecting plate 13 to ensure sufficient connection stability between the first connecting plate 11 and the second connecting plate 12.

[0026] To further improve the structural stability of the bracket support 1, the bracket support 1 also includes at least one second support reinforcing plate 15 connected between the first support reinforcing plate 14 and the third connecting plate 13. Specifically, there are two second support reinforcing plates 15, which are connected to different sides of the third connecting plate 13, and each second support reinforcing plate 15 is connected to one of the first support reinforcing plates 14 on the same side of the third connecting plate 13, so as to ensure sufficient stability of the bracket support 1.

[0027] Secondly, there is connector 22.

[0028] like Figures 1-3 As shown, according to another embodiment of the present invention, the steel box arch vertical rotating bracket lifting lug, wherein each of the connecting members 22 includes an end plate 221, the end plate 221 being connected to the corresponding end of the pin 21 and also connected to the bracket support 1.

[0029] In this embodiment, the end plate 221 is a square plate. The end plate 221 is fixedly sleeved on one end of the pin 21 and is also perpendicularly connected to the first connecting plate 11 to stably connect the pin 21.

[0030] In order to improve the connection stability between the end plate 221 and the pin 21, each of the connectors 22 further includes a first lifting lug reinforcing plate 222, which is fixedly sleeved on the outer side of the corresponding end of the pin 21 and is also fixedly attached to one side of the end plate 221.

[0031] In this embodiment, the first lifting lug reinforcing plate 222 is an annular plate, which is fixedly sleeved on one end of the pin 21 and also attached to one side of the end plate 221 and then welded to increase the connection area between the pin 21 and the end plate 221 and improve the assembly stability of the pin 21.

[0032] To improve the connection stability between the end plate 221 and the first connecting plate 11, each of the connecting members 22 further includes at least one second lifting lug reinforcing plate 223 connected between the end plate 221 and the bracket support 1; the second lifting lug reinforcing plates 223 in the two connecting members 22 are distributed on opposite sides of the end plates 221 in the two connecting members 22.

[0033] In this embodiment, two second lifting lug reinforcing plates 223 are shown in each connector 22 to ensure sufficient connection stability between the end plate 221 and the first connecting plate 11. Each second lifting lug reinforcing plate 223 is a wedge-shaped block.

[0034] Here, the design of the second lifting lug reinforcing plates 223 in the two connectors 22 being distributed on opposite sides of the end plates 221 in the two connectors 22 is so that there is only a pin 21 between the end plates 221 of the two connectors 22. After the pin 21 is connected to the shackle, the shackle can rotate at a larger angle relative to the pin 21, thus avoiding the second lifting lug reinforcing plates 223 restricting the rotation of the shackle relative to the pin 21.

[0035] The operation of the vertical rotating bracket lifting lugs of the steel box arch is as follows:

[0036] Step 1: Use existing BIM technology to simulate and calculate the center of gravity of the arch rib segment during the hoisting process, and determine the location of the four lifting points on the arch rib segment (the distance between the four lifting points and the center of gravity is equal).

[0037] Step 2: Weld the four steel box arch vertical corbel lifting lugs to the corresponding positions of the four lifting points (e.g., ...). Figure 4 And ensure that the installation angle is accurate;

[0038] Step 3: Using cable cranes, connect the shackles at both ends of the lifting ropes of the two cable cranes to the four lifting lugs of the vertical brackets of the steel box arch (the middle of the lifting rope is connected to the cable crane lifting device).

[0039] Step 4: Lifting the arch rib segment. After lifting the arch rib segment to the target height, the two cable cranes adjust the positions of the two lifting ropes connected to the corresponding cable cranes to adjust the positions of the four lifting points, thereby adjusting the angle and posture of the arch rib segment in the air to the required level.

[0040] Step 5: Install the steel box arch.

[0041] It should be noted that the method of connecting the cable crane lifting device to the lifting rope, and the method of adjusting the lifting rope through the cable crane lifting device to change the angle and posture of the arch rib segment during the lifting process, are existing technologies. If any aspects are unclear, please refer to the corresponding technology in CN101525865B. In practical applications, the shackle can rotate relative to the pin 21 by an angle of 0-90°, and the weight of the arch rib segment can reach 150 tons.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A type of steel box arch vertical rotating bracket lifting lug, characterized in that, It includes a corbel support for welding to the arch rib segment and a vertical lifting lug connected to the corbel support. The vertical lifting lug includes a pin for shackle connection and a connector that is connected to both ends of the corbel support and the pin. When the bracket support is welded to the arch rib segment, a first connecting surface is cut on the bracket support for fitting with the arch rib segment, and the inclination angle of the first connecting surface is the same as the installation angle of the arch rib segment.

2. The steel box arch vertical rotating bracket lifting lug according to claim 1, characterized in that, The bracket includes: The first connecting plate is connected to both the connecting parts; The second connecting plate is connected to the first connecting plate and serves as one end for cutting when the corbel support is welded to the arch rib segment. A third connecting plate is connected between the first connecting plate and the second connecting plate.

3. The steel box arch vertical rotating bracket lifting lug according to claim 2, characterized in that, The bracket also includes: The first support reinforcement plate has multiple plates, all of which are connected between the first connecting plate, the second connecting plate, and the third connecting plate.

4. The steel box arch vertical rotating bracket lifting lug according to claim 3, characterized in that, Multiple first support reinforcing plates are distributed on different sides of the third connecting plate, and the first support reinforcing plates on the same side of the third connecting plate are arranged at intervals along the length direction of the first connecting plate.

5. A steel box arch vertical rotating bracket lifting lug according to claim 3, characterized in that, The bracket also includes at least one second support reinforcing plate connected between the first support reinforcing plate and the third connecting plate.

6. The steel box arch vertical rotating bracket lifting lug according to claim 1, characterized in that, Each of the aforementioned connectors includes: An end plate, which is connected to the corresponding end of the pin and is also connected to the bracket support.

7. A steel box arch vertical rotating bracket lifting lug according to claim 6, characterized in that, Each of the aforementioned connectors also includes: The first lifting lug reinforcing plate is fixedly sleeved on the outer side of the corresponding end of the pin and is also fixedly attached to one side of the end plate.

8. A steel box arch vertical rotating bracket lifting lug according to claim 7, characterized in that, Each of the connectors further includes at least one second lifting lug reinforcing plate connected between the end plate and the bracket support; the second lifting lug reinforcing plates of the two connectors are distributed on opposite sides of the end plates of the two connectors.

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