A universal tensioning anchor beam

Abstract

The present invention relates to the technical field of bridge construction engineering equipment, in particular to a universal tensioning anchor beam for the construction of arch bridges by the inclined cable buckling method. Compared with the prior art, this universal tensioning anchor beam is characterized in that tensioning vertical plates are welded at both ends of the main beam, a rotating shaft tensioning pedestal is arranged in the holes of the vertical plates, and the rotating shaft can freely rotate vertically in the holes of the vertical plates to adapt to the vertical inclination angle of the buckling cable. Then, upper and lower spherical pads are arranged on the tensioning pedestal, and the anchor is tensioned with its top against the upper spherical pad. The upper spherical pad can freely rotate in the concave spherical surface of the lower spherical pad to adapt to the horizontal deflection angle of the buckling cable. Therefore, the thorny problem that the anchor beam can only be designed and used once and cannot be interchanged and used universally is completely solved, so as to realize the interchange and universal use of each tensioning anchor beam, achieve the purpose of recycling and reusing to reduce the construction cost, with simple and reliable structural design, convenient operation, being able to well adapt to the vertical inclination angle and horizontal deflection angle of the buckling cable, being able to be circulated, interchanged and used universally, and effectively reducing the project cost.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction engineering equipment, and particularly to a universal tensioning anchor beam for the construction of arch bridges by the inclined cable suspension method. Background Art

[0002] Steel strands are widely used as load-bearing structures in the inclined cable suspension cables of arch bridges. The anchor beam, as a force transmission device for the suspension cables, is arranged on the top of the tower. The suspension cables are symmetrically tensioned and anchored at both ends of the anchor beam. The angles of each section of the suspension cables are different. It is very necessary to design an interchangeable and universal anchor beam structure.

[0003] Currently, in the existing technology, the anchor beam structures are all welded with tension plates and cover plates at both ends. The cover plates are provided with holes, and the anchor is directly pressed against the cover plate, and then the suspension cable is installed for tensioning. Since the angles of each section of the suspension cables are different, the angles of the plates and cover plates welded on each anchor beam are also different and cannot be interchanged with each other. They need to be independently designed and independently produced and processed. When the anchor beam is used in the next project, the plates and cover plates need to be flame cut, and then the plates and cover plates are re-welded at a new angle. After multiple cutting and welding, the main beam of the anchor beam will be damaged and scrapped, resulting in waste of labor and materials. Summary of the Invention

[0004] To solve the defects and problems existing in the anchor beam in the prior art, a universal tensioning anchor beam is provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is: A universal tensioning anchor beam of the present invention includes a main beam, a tension plate, a rotating shaft tensioning pedestal, a spherical lower cushion plate, a spherical upper cushion plate, an anchor and a wedge; the tension plates are welded to both ends of the main beam, the tension plates are provided with plate holes, and the rotating shaft tensioning pedestal is installed in the plate holes; the spherical lower cushion plate and the spherical upper cushion plate are installed on the rotating shaft tensioning pedestal; the anchor and the wedge are installed on the upper spherical cushion plate, and the anchor and the wedge are used for anchoring the suspension cable.

[0006] The rotating shaft tensioning pedestal and the tension plate are in sliding fit, and the rotating shaft tensioning pedestal can freely rotate in the plate hole to adapt to the vertical inclination angle of the suspension cable.

[0007] The spherical lower cushion plate and the spherical upper cushion plate cooperate with each other. The spherical lower cushion plate and the spherical upper cushion plate are in sliding fit. The upper spherical cushion plate can freely rotate in the concave spherical surface of the lower spherical cushion plate, driving the anchor to adapt to the horizontal deflection angle of the suspension cable, so as to realize the interchangeability and universality of each tensioning anchor beam.

[0008] The beneficial effects of the present invention are as follows: Compared with the prior art, in a universal tensioning anchor beam of the present invention, tensioning vertical plates are welded at both ends of the main beam, a rotating shaft tensioning pedestal is arranged in the holes of the vertical plates, and the rotating shaft can freely rotate vertically in the holes of the vertical plates to adapt to the vertical inclination angle of the fastening cable. Then, upper and lower spherical backing plates are arranged on the tensioning pedestal, and the anchor is abutted against the upper spherical backing plate for tensioning. The upper spherical backing plate can freely rotate in the concave spherical surface of the lower spherical backing plate to adapt to the horizontal deflection angle of the fastening cable. Therefore, the thorny problem that the anchor beam can only be designed for one-time use and cannot be interchanged and used universally is completely solved, so that the interchange and universal use of each tensioning anchor beam are realized, and the purpose of recycling and reducing the construction cost is achieved. The structural design is simple and reliable, the operation is convenient, it can well adapt to the vertical inclination angle and horizontal deflection angle of the fastening cable, can be circulated, interchanged and used universally, and effectively reduces the project cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following further describes a universal tensioning anchor beam of the present invention in conjunction with the drawings and specific embodiments.

[0010] Figure 1 is a structural schematic diagram of a universal tensioning anchor beam of the present invention;

[0011] Figure 2 is Figure 2 side view structural schematic diagram of. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] As Figure 1 and Figure 2 shown, a universal tensioning anchor beam of the present invention includes a main beam 1, tensioning vertical plates 2, a rotating shaft tensioning pedestal 3, a spherical lower backing plate 4, a spherical upper backing plate 5, an anchor 6 and a wedge 7. The tensioning vertical plates 2 are welded to both ends of the main beam 1. There are vertical plate holes 21 on the tensioning vertical plates 2, and the rotating shaft tensioning pedestal 3 is installed in the vertical plate holes 21. The rotating shaft tensioning pedestal 3 and the tensioning vertical plates 2 are in sliding fit, and the rotating shaft tensioning pedestal 3 can freely rotate in the vertical plate holes 21 to adapt to the vertical inclination angle of the fastening cable 8.

[0013] As Figure 1 and Figure 2 shown, the spherical lower backing plate 4 and the spherical upper backing plate 5 are installed on the rotating shaft tensioning pedestal 3. The spherical lower backing plate 4 and the spherical upper backing plate 5 cooperate with each other. The spherical lower backing plate 4 and the spherical upper backing plate 5 are in sliding fit, and the upper spherical backing plate 5 can freely rotate in the concave spherical surface of the lower spherical backing plate 4, driving the anchor 6 to adapt to the horizontal deflection angle of the fastening cable 8, so as to realize the interchange and universal use of each tensioning anchor beam. The anchor 6 and the wedge 7 are installed on the upper spherical backing plate 5, and the anchor 6 and the wedge 7 are used for anchoring the fastening cable 8.

[0014] In summary, compared with the prior art, a universal tensioning anchor beam of the present invention is provided with tensioning vertical plates welded at both ends of the main beam, and a rotating shaft tensioning pedestal is arranged in the holes of the vertical plates. The rotating shaft can freely rotate vertically in the holes of the vertical plates to adapt to the vertical inclination angle of the buckle cable. Then, upper and lower spherical pads are arranged on the tensioning pedestal, and the anchor is tensioned with the top against the upper spherical pad. The upper spherical pad can freely rotate in the concave spherical surface of the lower spherical pad to adapt to the horizontal deflection angle of the buckle cable. Therefore, the thorny problem that the anchor beam can only be designed and used once and cannot be interchanged and used generally is completely solved, so that the interchangeability and general use of each tensioning anchor beam are realized, and the purpose of recycling and reducing the construction cost is achieved. The structural design is simple and reliable, the operation is convenient, it can well adapt to the vertical inclination angle and the horizontal deflection angle of the buckle cable, can be circulated, interchanged and used generally, and effectively reduces the project cost.

[0015] The present invention has been described illustratively rather than restrictively according to the embodiments of the present invention. However, it should be understood that the protection scope of the present invention is not limited thereto. Without departing from the relevant protection scope defined by the claims, those skilled in the art can make changes and / or modifications, and any modifications, equivalent replacements, etc. based on this should be covered within the protection scope of the present invention.

Claims

1. A universal tensioning anchor beam, characterized in that: it includes a main beam, a tensioning vertical plate, a rotating shaft tensioning pedestal, a spherical lower backing plate, a spherical upper backing plate, an anchor and a wedge; the tensioning vertical plates are welded to both ends of the main beam, the tensioning vertical plates are provided with vertical plate holes, and the rotating shaft tensioning pedestals are installed in the vertical plate holes; the spherical lower backing plate and the spherical upper backing plate are installed on the rotating shaft tensioning pedestal; the anchor and the wedge are installed on the upper spherical backing plate, and the anchor and the wedge are used to anchor the buckle cable; there is a sliding fit between the rotating shaft tensioning pedestal and the tensioning vertical plate, and the rotating shaft tensioning pedestal can freely rotate in the vertical plate hole to adapt to the vertical inclination angle of the buckle cable; the spherical lower backing plate and the spherical upper backing plate cooperate with each other, there is a sliding fit between the spherical lower backing plate and the spherical upper backing plate, and the upper spherical backing plate can freely rotate in the concave spherical surface of the lower spherical backing plate, driving the anchor to adapt to the horizontal deflection angle of the buckle cable, so as to realize the interchange and universality of each tensioning anchor beam.

Images