Security early warning system for pipe gallery well lid movement

Abstract

The invention provides a security early warning system for pipe gallery well lid movement. The security early warning system comprises a driven mechanism, a vibration mechanism and a detection opticalcable used for detecting vibration; the driven mechanism comprises a traction rope; the vibration mechanism comprises a cable reeling pin ratchet wheel, a first torsional spring hinge joint and a first knocking rod; the cable reeling pin ratchet wheel comprises a center shaft, a drum which is connected with the center shaft in a sleeving manner and a turntable arranged on one side of the drum; the drum is wound with one end of the traction rope; the turntable comprises multiple bulges; the first end of the first knocking rod is hinged to the first torsional spring hinge joint; the first knocking rod clings to the bulges of the turntable through the first torsional spring hinge joint; and the detection optical cable is in a movement range of the first knocking rod. By adopting the securityearly warning system provided by the invention, a weak movement signal is amplified into a regular frequency vibration signal through the vibration mechanism to be transferred to the detection optical cable, the detection optical cable transfers the vibration signal to a remote optical fiber vibration detection system, and thus the purpose of accurately and timely performing alarm is achieved.

Description

technical field [0001] The invention relates to the technical field of cable protection, in particular to a security early warning system for moving a pipe gallery manhole cover. Background technique [0002] Urban underground water, electricity and communication pipe networks are densely distributed. The normal operation of these pipelines is a major issue related to the livelihood of the people in the city. Due to the wide distribution of manhole covers at the entrance of the pipe gallery, it brings difficulties to supervision. The displacement, damage and loss of manhole covers, and even the destruction of pipelines from the entrance of the utility gallery will bring great safety hazards to the urban utility gallery. [0003] At present, the protection and early warning technology patents for the entrance manhole cover of the pipe gallery are divided into the following categories: [0004] 1. Mainly to strengthen the structure of the manhole cover itself. This type of ...

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Problems solved by technology

[0009] In view of this, the purpose of the present invention is to provide a security early warning system for the movement of the manhole cover of the pipe gallery, which can solve the problem that the optical fiber cannot sense enough vibration signals in time, the service life, and the installation and later stage of the existing optical fiber well position channel positioning monitoring technology. maintenance problem

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