Inhaul cable type power transmission tower

Abstract

The invention discloses an inhaul cable type power transmission tower. The inhaul cable type power transmission tower comprises a supporting foundation, a supporting main body, two upper trusses and an inhaul cable mechanism, wherein the supporting foundation comprises a foundation trench, a mounting bottom plate, an elastic supporting mechanism and a limiting mechanism, the elastic supporting mechanism is located in the foundation trench, the mounting bottom plate is located on the elastic supporting mechanism, the limiting mechanism is connected with the foundation trench or the mounting bottom plate, the lower end of the supporting main body is fixedly connected with the mounting bottom plate, the two upper trusses are symmetrically hinged to the upper end of the supporting main body, the inhaul cable mechanism comprises a plurality of first inhaul cables, a plurality of second inhaul cables, a plurality of third inhaul cables and a plurality of fourth inhaul cables, the two ends of each first inhaul cable and the two ends of each second inhaul cable are connected with the upper trusses and the ground, the two ends of each fourth inhaul cable are connected with the upper ends of the two upper trusses, one end of each third inhaul cable is connected with the upper end of one upper truss, and the other ends of the third inhaul cables are mutually connected to form fifth hanging points. The power transmission tower is small in occupied area, low in field flatness requirement, short in construction period, convenient to adjust, high in bearing capacity and suitable for power transmission towers of different specifications and different building environments.

Description

technical field [0001] The invention belongs to the technical field of power transmission equipment, and in particular relates to a cable-type power transmission tower. Background technique [0002] With the rapid development of the economy and the improvement of people's living standards, the demand for electricity is increasing, and large-capacity, multi-circuit lines with higher voltage levels have emerged as the times require. Transmission towers are wire and lightning protection wire structures that support high-voltage or ultra-high-voltage overhead power transmission lines. During construction, the above factors and the topographical factors that the transmission line passes should be considered comprehensively. [0003] There are following defects in the transmission tower in the prior art: [0004] 1) The foundation of the transmission tower occupies a large area, and has high requirements for the flatness of the site, so it is not easy to build in areas with stee...

AI Technical Summary

Problems solved by technology

[0004] 1) The foundation of the transmission tower occupies a large area, and the requirements for the flatness of the site are high, so it is not easy to build in steep areas such as mountains

In addition, the method of embedding and compacting the foundation pit is adopted. In order to achieve the bearing capacity of the foundation, it is necessary to adopt multiple larger and deeper foundation burial depths. The construction period is long and the cost is high, which is not conducive to environmental protection;

[0005] 2) Due to the high height of the transmission tower, the foundation of the existing transmission tower is an important part, and the stability requirements of the transmission tower cannot be guaranteed, and it will tilt, and even cause casualties and economic losses;

[0006] 3) The external interference is large, because the transmission tower is also subject to the load (such as wind pressure, etc.) brought by the change of the external environment when it bears the load of the transmission line, it is easy to generate torque and bending moment to cause stress concentration, which destroys the transmission tower. Safety, it is difficult to ensure the safe operation quality of the power grid. For example, the middle section of the transmission tower is often reduced due to the reduction of the middle section of the tower body, and it is easy to break the middle when it is subjected to the unbalanced force caused by the wind load and the transmission line, etc.

Images