High-strength electric power-transmitting iron tower

Abstract

The components of existing electric power-transmitting iron tower are mostly angle steel with poor anti-bending strength and have the disadvantage of contradiction between entire tower strength improvement and economical efficiency. The technical proposal adopted for solving the disadvantage is as follows: the tower body horizontal section structure and the tower head crossarm vertical section structure of the electric power-transmitting iron tower are both designed into trapezoid; the lower bottom edge of the tower body section trapezoid faces away from the maximum forced direction of the electric power-transmitting iron tower; the lower bottom edge of the tower head crossarm section trapezoid face upwards; both an upright post at the lower bottom edge of the tower body section trapezoid and a crossbeam at the lower bottom edge of the tower head crossarm trapezoid are made of I-beam or channel-section steel, and both an upright post at the upper bottom edge of the tower body section trapezoid and a crossbeam at the upper bottom edge of the tower head crossarm trapezoid are made of steel tubes. The anti-bending section modulus of the I-beam is higher than that of the angle iron by about one time, therefore, the manufacturing of main forced components of the electric power-transmitting iron tower by adopting the I-beam or the channel-section steel to replace the angle steel is reasonable from the point of view of mechanics and is economical from the point of view of economy.

Description

technical field [0001] The invention relates to power transmission equipment, especially power transmission iron towers. Background technique [0002] Most of the components of the existing transmission towers are angle steels. We know that the bending resistance of angle steels is poor, and then the angle steels are combined to form a regular quadrilateral tower body, which makes the angle steels placed on the section where the mechanical properties are not good It is even more unreasonable to use it in the -x direction. In order to improve the strength of the transmission tower, the column of the tower body is changed to a steel pipe, such as the "Transmission Tower" with the patent application No. 99112190.2, which has such a structure. % or so, the strength of the transmission tower can be improved like this, but the degree of improvement is still unsatisfactory. [0003] In order to improve the anti-ice and snow freezing ability of the power cable, it is necessary to ...

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Problems solved by technology

[0005] In order to solve the problem that existing power transmission towers have contradictions between increasing the strength of the whole tower and economical efficiency, the present invention provides a high-strength power transmission tower, which can solve the problems existing in the use of existing power transmission towers. There is a contradiction between increasing the strength of the whole tower and economy

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