Temporary connecting piece for cable bent tower steel structure beam cantilever assembly

Abstract

The utility model discloses a cable bent tower steel structure cross beam cantilever assembly temporary connecting piece which comprises a temporary connecting piece for connecting cable bent tower connecting sections and a temporary connecting piece for connecting folding sections. The temporary connecting piece for connecting the cable bent tower connecting sections comprises a first top connecting piece used for bearing shearing force and tensile force generated by bending moment and a first bottom connecting piece used for bearing axial force generated by the bending moment, and the temporary connecting piece for connecting the closure sections comprises a second top connecting piece used for bearing shearing force from closure sections. The problems that an existing temporary connecting piece for cable bent tower steel structure beam cantilever assembly does not adjust the structure according to the stress conditions of all places, consequently, stress is uneven, and potential safety hazards exist are solved.

Description

Technical Field

[0001] This utility model relates to the field of structures used in bridge engineering construction, and in particular to a temporary connecting component for cantilever assembly of crossbeams in cable tower steel structures. Background Technology

[0002] In the construction of steel crossbeams for long-span bridge towers, the conventional process involves erecting a crossbeam support frame and then assembling the crossbeams segment by segment on the support frame. All crossbeam segments are installed on the support frame. However, to reduce the risks of working at heights and improve the construction efficiency of steel crossbeams, cantilever assembly has become a trend. When using this cantilever assembly process, a crucial component is the temporary connector between each crossbeam segment, which bears the entire load of the assembled segment. This temporary connector must have reliable load-bearing capacity and be easy to construct. Currently, the conventional structure of this temporary connector has the following drawbacks:

[0003] Existing temporary connectors are mostly connected with high-strength bolts. The disadvantage of this approach is that the corresponding structures are not designed according to the stress conditions of the structure at each location. This results in the load on each temporary connector not being evenly distributed, and some connectors may suffer from structural failure due to bearing large loads. Utility Model Content

[0004] The purpose of this utility model is to provide a temporary connector for the cantilever assembly of crossbeams in cable tower steel structures, solving the problem that existing temporary connectors for the cantilever assembly of crossbeams in cable tower steel structures do not have structural adjustments for different stress conditions, resulting in uneven stress and potential safety hazards. To solve the above technical problems, this utility model adopts the following technical solution:

[0005] A temporary connector for cantilever assembly of a steel tower beam includes a temporary connector for connecting tower connecting segments and a temporary connector for connecting closing segments. The temporary connector for connecting tower connecting segments includes a first top connector for bearing tensile forces generated by shear force and bending moment, and a first bottom connector for bearing axial forces generated by bending moment. The temporary connector for connecting closing segments includes a second top connector for bearing shear force from the closing segment.

[0006] In this design, when connecting the cantilevered assemblies to the tower segments, the temporary connectors at the joints primarily bear the shear force and bending moment from the connecting segment, similar to the stress pattern at the root of the cantilever beam. Therefore, the top temporary connector at the joint bears the tensile force generated by the shear force and bending moment, while the bottom temporary connector bears the axial force generated by the bending moment. Thus, a first top connector to bear the tensile force generated by the shear force and bending moment and a first bottom connector to bear the axial force generated by the bending moment are respectively installed at their tops. Then, when installing the intermediate closure segments, the temporary connectors at the joints on both sides primarily bear the shear force from the closure segment, similar to the stress pattern at the end of a simply supported beam. Therefore, a second top connector to bear the shear force from the closure segment is installed at its top. This targeted structural design makes the overall structure more evenly stressed and reduces safety risks.

[0007] As a further preferred embodiment of this utility model, when the cable tower connecting segment is connected to the cable tower, two sets of the first top connector and the first bottom connector are provided, and when the closing segment is connected to the cable tower connecting segment, two sets of the second top connector are provided.

[0008] As a further preferred embodiment of this utility model, the first top connector includes a male ear plate and a female ear plate that are fitted together. The male ear plate and the female ear plate are respectively disposed on the top surface of the connecting part near the tower on the top surface of the tower connecting segment and on the top surface of the connecting part on the side of the tower. Both sides of the male ear plate and the female ear plate are provided with ear plate stiffening plates. The part of the male ear plate used to engage with the clamping gap of the female ear plate is a pin shaft connection part. The middle part of the pin shaft connection part is provided with a male ear plate pin shaft hole. The female ear plate is provided with a female ear plate pin shaft hole at the position opposite to the male ear plate pin shaft hole. The male ear plate and the female ear plate are detachably connected by connecting pins inserted into the male ear plate pin shaft holes and the female ear plate pin shaft holes.

[0009] The first top connector has a simple structure and is easy to install. It can be installed quickly and easily when working at heights, and it also has a good positioning function.

[0010] As a further preferred embodiment of the present invention, the first bottom connector includes two steel boxes, which are respectively disposed on the bottom surface of the connection part of the cable tower connecting segment near the cable tower and the side of the cable tower. The two steel boxes are connected by a steel rod, and a steel rod nut washer and a steel rod nut are provided at the junction of the steel rod and the steel box.

[0011] The first bottom connector has a very simple structure and is easy to install, allowing for quick and easy installation during high-altitude operations.

[0012] As a further preferred embodiment of this utility model, the second top connector includes a female head bearing plate assembly and a male head steel bar structure. The female head bearing plate assembly is disposed at the closing section connection end on the top surface of the cable tower connecting segment. The middle of the top surface of the female head bearing plate assembly is provided with an installation groove adapted to the male head steel bar structure. One end of the male head steel bar structure is connected to the anchoring steel plate assembly disposed at both ends of the top surface of the closing segment. The bearing plates of the female head bearing plate assembly are connected to each other through bearing plate stiffening plates. The anchoring steel plates of the anchoring steel plate assembly are connected to each other through anchoring plate stiffening plates.

[0013] The second top connector has a simpler structure; simply align the male steel rod structure directly with the mounting groove of the female bearing plate assembly and lower the closing segment.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0015] 1. In this scheme, when the cantilever assembly connects to the tower connection segment, the temporary connectors at the joint mainly bear the shear force and bending moment from the tower connection segment, similar to the stress mode at the root of the cantilever beam. Therefore, the temporary connector at the top of the joint bears the tensile force generated by the shear force and bending moment, while the temporary connector at the bottom bears the axial force generated by the bending moment. Thus, a first top connector to bear the tensile force generated by the shear force and bending moment and a first bottom connector to bear the axial force generated by the bending moment are respectively set at the top. Then, when installing the intermediate closing segment, the temporary connectors at the joints on both sides mainly bear the shear force from the closing segment, similar to the stress mode at the end of the simply supported beam. Therefore, a second top connector to bear the shear force from the closing segment is set at the top. This targeted structural design makes the overall structure more evenly stressed and reduces safety risks.

[0016] 2. The joint load is large and a large number of bolts are required. When assembling the cantilever beam, it is not easy to align the bolt holes on the temporary connector. Secondly, this structure is a general structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the first top connector of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the first bottom connector of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the second top connector of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Specific Implementation

[0027] Figure 1 , Figure 2 , Figure 3 , Figure 4 A temporary connector for cantilever assembly of a steel tower beam is shown, including a temporary connector for connecting tower connecting segments 1 and a temporary connector for connecting closing segments 2. The temporary connector for connecting tower connecting segments 1 includes a first top connector 3 for bearing the tensile force generated by shear force and bending moment, and a first bottom connector 4 for bearing the axial force generated by bending moment. The temporary connector for connecting closing segments 2 includes a second top connector 5 for bearing the shear force from the closing segment.

[0028] In this design, when connecting the cantilevered assemblies to the tower segments, the temporary connectors at the joints primarily bear the shear force and bending moment from the connecting segment, similar to the stress pattern at the root of the cantilever beam. Therefore, the top temporary connector at the joint bears the tensile force generated by the shear force and bending moment, while the bottom temporary connector bears the axial force generated by the bending moment. Thus, a first top connector to bear the tensile force generated by the shear force and bending moment and a first bottom connector to bear the axial force generated by the bending moment are respectively installed at their tops. Then, when installing the intermediate closure segments, the temporary connectors at the joints on both sides primarily bear the shear force from the closure segment, similar to the stress pattern at the end of a simply supported beam. Therefore, a second top connector to bear the shear force from the closure segment is installed at its top. This targeted structural design makes the overall structure more evenly stressed and reduces safety risks. Specific Implementation

[0029] This embodiment further describes the tower connection segment 1 based on specific embodiment 1. When the tower connection segment 1 is connected to the tower, the first top connector 3 and the first bottom connector 4 are provided in two sets. When the closing segment 2 is connected to the tower connection segment 1, the second top connector 5 is provided in two sets. Specific Implementation

[0030] This embodiment further describes the first top connector 3 based on specific embodiment 1. The first top connector 3 includes a male ear plate 31 and a female ear plate 32 that are configured to cooperate. The male ear plate 31 and the female ear plate 32 are respectively disposed on the top surface of the top surface of the cable tower connecting segment 1 near the cable tower and on the top surface of the connecting part on the side of the cable tower. Both sides of the male ear plate 31 and the female ear plate 32 are provided with ear plate stiffening plates 6. The part of the male ear plate 31 used to engage with the female ear plate 32 in the clamping gap is a pin shaft connection part. The middle part of the pin shaft connection part is provided with a male ear plate pin shaft hole. The female ear plate 32 is provided with a female ear plate pin shaft hole directly opposite the male ear plate 31 pin shaft hole. The male ear plate 31 and the female ear plate 32 are detachably connected by connecting pins 7 inserted into the male ear plate pin shaft holes and the female ear plate pin shaft holes.

[0031] The first top connector has a simple structure and is easy to install. It can be installed quickly and easily when working at heights, and it also has a good positioning function. Specific Implementation

[0032] This embodiment further describes the first bottom connector 4 based on specific embodiment 1. The first bottom connector 4 includes two steel boxes 41. The two steel boxes 41 are respectively disposed on the bottom surface of the connection part of the bottom of the cable tower connecting section 1 near the cable tower and the side of the cable tower. The two steel boxes 41 are connected by a steel rod 42. A steel rod nut washer 43 and a steel rod nut 44 are provided at the junction of the steel rod 42 and the steel box 41.

[0033] The first bottom connector has a very simple structure and is easy to install, allowing for quick and easy installation during high-altitude operations. Specific Implementation

[0034] This embodiment further describes the second top connector 5 based on specific embodiment 1. The second top connector 5 includes a female head bearing plate assembly 51 and a male head steel bar structure 52. The female head bearing plate assembly 51 is located at the closing section connection end on the top surface of the cable tower connecting segment 1. The middle of the top surface of the female head bearing plate assembly 51 is provided with an installation groove 511 that is adapted to the male head steel bar structure 52. One end of the male head steel bar structure 52 is connected to the anchoring steel plate assembly 53 located at both ends of the top surface of the closing segment 2. The bearing plates of the female head bearing plate assembly 51 are connected by bearing plate stiffening plates 8, and the anchoring steel plates of the anchoring steel plate assembly 53 are connected by anchoring plate stiffening plates 9.

[0035] The second top connector has a simpler structure; simply align the male steel rod structure directly with the mounting groove of the female bearing plate assembly and lower the closing segment.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A temporary connector for cantilever assembly of a steel structure crossbeam of a cable tower, characterized in that: It includes temporary connectors for connecting the tower connecting segments (1) and temporary connectors for connecting the closing segments (2). The temporary connectors for connecting the tower connecting segments (1) include a first top connector (3) for bearing the tensile force generated by shear force and bending moment, and a first bottom connector (4) for bearing the axial force generated by bending moment. The temporary connectors for connecting the closing segments (2) include a second top connector (5) for bearing the shear force from the closing segment.

2. The temporary connector for cantilever assembly of the steel structure crossbeam of the cable tower according to claim 1, characterized in that: When the cable tower connecting segment (1) is connected to the cable tower, the first top connector (3) and the first bottom connector (4) are provided in two sets. When the closing segment (2) is connected to the cable tower connecting segment (1), the second top connector (5) is provided in two sets.

3. The temporary connector for cantilever assembly of the steel structure crossbeam of the cable tower according to claim 1, characterized in that: The first top connector (3) includes a male ear plate (31) and a female ear plate (32) that are fitted together. The male ear plate (31) and the female ear plate (32) are respectively set on the top surface of the top surface of the cable tower connecting segment (1) near the cable tower and on the top surface of the connecting part on the side of the cable tower. Both sides of the male ear plate (31) and the female ear plate (32) are provided with ear plate stiffening plates (6). The part of the male ear plate (31) used to snap into the clamping gap of the female ear plate (32) is a pin shaft connection part. The middle part of the pin shaft connection part is provided with a male ear plate pin shaft hole. The female ear plate (32) is provided with a female ear plate pin shaft hole at the pin shaft hole of the male ear plate (31). The male ear plate (31) and the female ear plate (32) are detachably connected by a connecting pin (7) inserted into the pin shaft hole of the male ear plate and the pin shaft hole of the female ear plate.

4. The temporary connector for cantilever assembly of the steel structure crossbeam of the cable tower according to claim 1, characterized in that: The first bottom connector (4) includes two steel boxes (41). The two steel boxes (41) are respectively located on the bottom of the bottom of the cable tower connecting section (1) near the cable tower and on the bottom surface of the connecting part on the side of the cable tower. The two steel boxes (41) are connected by a steel rod (42). A steel rod nut washer (43) and a steel rod nut (44) are provided at the junction of the steel rod (42) and the steel box (41).

5. The temporary connector for cantilever assembly of the steel structure crossbeam of the cable tower according to claim 1, characterized in that: The second top connector (5) includes a female head bearing plate assembly (51) and a male head steel bar structure (52). The female head bearing plate assembly (51) is located at the closing section connection end on the top surface of the cable tower connecting segment (1). The middle part of the top surface of the female head bearing plate assembly (51) is provided with an installation groove (511) that is compatible with the male head steel bar structure (52). One end of the male head steel bar structure (52) is connected to the anchoring steel plate assembly (53) located at both ends of the top surface of the closing segment (2). The bearing plates of the female head bearing plate assembly (51) are connected to each other through bearing plate stiffening plates (8). The anchoring steel plates of the anchoring steel plate assembly (53) are connected to each other through anchoring plate stiffening plates (9).

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