An underground optical cable transfer box for preventing from being submerged in water

Abstract

The invention discloses an embedded optical cable splice box prevented from being submersed by water, and belongs to the technical field of optical cable splice box water resistance and protection. The embedded optical cable splice box can ascend or descend automatically according to rising or falling of the water level of water accumulated in a pit till the splice box returns back to the original position. The embedded optical cable splice box comprises a base, a circular buoyancy tank and a telescopic pull rod. An embedded optical cable splice box body is arranged above the circular buoyancy tank, the lower bottom face of the embedded optical cable splice box body is fixed to the top end of the telescopic pull rod, and the bottom end of the telescopic pull rod is fixed to the inner wall of a pull rod placing cavity. An air-pressure lock pin controlled by an air-pressure control device is arranged in a pin hole of the base. The air-pressure control device comprises an air-pressure piston cylinder, a rope and a buoyancy power mechanism. The buoyancy power mechanism pulls and drives a piston of the air-pressure piston cylinder through the rope by virtue of the ascending buoyancy to move so as to drive the air-pressure lock pin to be opened and closed, so that the embedded optical cable splice box can freely ascend and descend under the action of the buoyancy of the circular buoyancy tank, and it is guaranteed that a signal transmission and monitoring device in the embedded optical cable splice box cannot be submersed by flood.

Description

technical field [0001] The invention relates to the technical field of waterproof protection for an optical cable transfer box, in particular to an underground optical cable transfer box that prevents it from being submerged in water. Background technique [0002] Because the buried optical cable transfer box is generally arranged in the pit on the ground beside the urban road. For example, the buried fiber optic cable junction box in the city is generally arranged on the roadside or in the pit on the empty ground of the community. Now in some cities, there will be water in the pits where the buried optical cable transfer box is installed when there is a heavy rain. If the accumulated water in the pit continues to rise, it will submerge the buried optical cable junction box in the pit. Since the buried optical cable transfer box is equipped with high-precision signal transmission monitoring equipment, once the buried optical cable transfer box is submerged in water, it wil...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that when the existing buried optical cable transfer box is used in a pit that is easily flooded by water, if there is a large amount of water in the pit, it will cause the buried optical cable transfer box to be easily flooded by water, resulting in signal transmission. Insufficient monitoring equipment damage, providing a buried optical cable transfer box to prevent being submerged in water, the buried optical cable transfer box can automatically rise according to the rise of the water level in the pit, and according to the drop of the water level in the pit And automatically descend, and automatically reset after the water in the pit disappears and install it on the base

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