A transmission tower with anti-extension arm torsion using thin-wall buckling torsion

Abstract

The invention discloses a power transmission tower using thin-walled buckling and twisting anti-outrigger torsion, which belongs to the technical field of power transmission towers, and includes a main tower, a single rotating arm with a low hanging point, a thin-walled tube and a bracket with a high hanging point. The main tower A low hanging point single rotating arm is installed between the low hanging point single rotating arm and the high hanging point bracket, and a thin-walled tube is arranged between the low hanging point single rotating arm and the high hanging point bracket; , the main tower sand tank and the shaft hole, the top of the main tower is provided with a main tower sand tank with an open upper end, two main tower rotating shafts are welded on the lower bottom of the main tower sand tank, and the main tower sand tank The main tower card plate is welded at the upper end port. Improve the stability and safety of normal use. When an accident occurs, the low-hanging point single-rotating arm rotates. After the rotation, the horizontal force arm decreases, the bending moment of the low-hanging point single-rotating arm decreases, and the torque transmitted to the main tower There is also a reduction, so the safety of the main tower is also improved, and the corresponding construction cost can also be reduced.

Description

technical field [0001] The invention relates to the technical field of power transmission towers, in particular to a power transmission tower using thin-wall buckling torsion anti-outrigger torsion. Background technique [0002] The transmission tower is a common high-rise structure, which is usually subjected to gravity load, wind load, earthquake load, etc. At the same time, various loads on the transmission line on the transmission tower are finally transmitted to the transmission tower. Under normal circumstances, The force generated by the transmission line on the transmission tower on the transmission tower is close to balance, so the transmission tower is only affected by the vertical force and a small part of the unbalanced force. However, when the accident occurs, the transmission line on the transmission tower After an asymmetrical break, the transmission line will not only generate vertical loads but also horizontal loads on the transmission tower. Especially in ...

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Problems solved by technology

Especially in the case of anti-symmetric disconnection accident conditions, the torque on both sides will be superimposed, and under the action of this torque, it will have a very adverse effect on the safety of the main tower; it is necessary to reduce the torque effect through a rotatable structure, but in the transmission tower Under normal use, the stability of the rotating structure is poor, and the outer extension end of the low hanging point single rotating arm has a heavier specific gravity than the connection end of the main tower, which further leads to poor stability and low safety of the transmission tower under normal use, so there is an urgent need for a The structure is stable in normal use, and the low-hanging-point single-swivel arm rotates relative to the main tower in case of an accident

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