Wind-resistant and overturn-preventing external expansion pole foundation for electric power

Abstract

The invention provides a wind-resistant and overturn-preventing external expansion pole foundation for electric power. The pole foundation is arranged underground and used for supporting a pole, so that the pole has better wind-resistant, overturn-preventing and anti-pulling capacity; and the foundation can be reused during pole replacement or line transfer in the future, and investment is not wasted. The foundation is characterized in that the foundation is placed on the ground and directly driven or pressed underground after being straightened; a four-way expansion board is arranged at the lower part of the foundation and can be increased and decreased according to actual conditions, a nut is tightened to allow a two-way conical screw to rise, the expansion board expands in each direction, and the lower part of the expansion board is claw-shaped to strengthen the stability and anti-pulling capacity of the foundation; an inverted horn-shaped countersink is formed in the upper part ofthe foundation, and positioning bolts are arranged on the periphery of the upper part of the inverted horn-shaped countersink; and a heavy electric pole is placed in the inverted horn-shaped countersink, the lower end of the heavy electric pole is clamped at the bottom of the inverted horn-shaped countersink, the positioning bolts adjusts the vertical degree of the heavy electric pole, then, a wedge block is plugged in the inverted horn-shaped countersink to further fix the heavy electric pole, and finally, the countersink is filled with soil.

Description

technical field [0001] The invention relates to an electric pole foundation. Background technique [0002] The pole tower is the general term for the pole and the iron tower. It is vertically arranged on the ground as a support device for the overhead line. Keep a certain safe distance between objects; the underground devices of the tower are collectively called the foundation, and the foundation is used to stabilize the tower so that the tower will not be pulled up, sinking or toppled due to vertical load, horizontal load, accidental disconnection tension and external force. [0003] The excavation of the traditional power grid pole foundation usually requires two people to use a "shovel and scoop" to excavate a foundation pit with a depth of about 2 meters. It takes 4 hours to complete, which is inefficient and consumes too much physical strength of the workers. Large, in the case of water accumulation in the foundation pit, use the water and mud scooped out when digging ...

AI Technical Summary

Problems solved by technology

When the traditional power grid pole foundation does not meet the windproof requirements, the windproof reinforcement measures adopted have different degrees of advantages and disadvantages. For example, the installation of windproof pull wire measures has a better effect on the overall reinforcement of the pole, but it needs to occupy a large area of ​​the ground. Land acquisition Difficult, some on-site conditions make it difficult to implement and affect the appearance; if the sleeve foundation of the pole is added, the overturning resistance of the foundation is better, but it is necessary to pull out the pole and bury the sleeve foundation and then re-lift the pole, which requires a power outage. Moreover, the sleeve foundation lacks an adjustment mechanism, which makes it difficult to correct the poles; if the cast-in-place concrete foundation for the poles is added, the foundation and the poles will be integrated after construction. When the poles are replaced or the lines are moved later, the foundation cannot be reused. waste of investment

In addition, there are many types of poles in the distribution network because the foundation does not meet the windproof requirements, and the problem of land acquisition often becomes a difficult problem that restricts the windproof reinforcement of the poles, so there is always the risk of serious damage after the typhoon comes.

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