GIS-based hidden danger investigation and risk assessment system for marine disasters of natural disasters

Abstract

The invention provides a GIS-based hidden danger investigation and risk assessment system for marine disasters of natural disasters. The GIS-based hidden danger investigation and risk assessment system comprises an unmanned aerial vehicle, a motor, a driving gear, a fixing sleeve, a buckle disc, a pulling shaft, a spring, a sealing cover, a transmission gear, a fixing shaft, a reel, a pull wire, aliquid collecting pipe, a one-way valve and a bearing; the motor is connected to the bottom of the unmanned aerial vehicle in a screwed mode; the driving gear is connected to a motor shaft in a pinned mode; the fixing sleeve is connected to the bottom of the unmanned aerial vehicle in a screwed mode, a transmission cavity is formed in the right end face of the fixing sleeve leftwards, and horizontal guide ribs are arranged in the transmission cavity; the L-shaped fixing shaft is located on the left side of the fixing sleeve, and the top of the L-shaped fixing shaft is connected to the bottomof the unmanned aerial vehicle in a screwed mode; the horizontal section is provided with the reel; the buckle disc is mounted in the transmission cavity, and a buckle column on the left side face ismounted into a buckle hole in the right side face of the reel in an inserted mode; the sealing cover is mounted on the right side face of the fixing sleeve in a screwed mode and forms a lead screw nutstructure with the pulling shaft; a pulling piece is arranged on the left side of the pulling shaft and abuts against the left side face of the buckle disc; the spring is mounted outside the pullingshaft in a sleeving mode and clamped between the buckling disc and the sealing cover; and the transmission gear at the right end of the pulling shaft is meshed with the driving gear.

Description

technical field [0001] The invention relates to an assessment system, in particular to a GIS-based marine disaster hidden danger investigation and risk assessment system for natural disasters. Background technique [0002] The Disaster Reduction and Emergency Management Research Institute, the National Disaster Reduction Center of the Ministry of Emergency Management, and the Information Research Institute of the Ministry of Emergency Management collect various natural disaster data every year to analyze and evaluate the global and Chinese natural disasters. The evaluation of natural disasters can be divided into three types according to the disaster occurrence process, one is pre-disaster evaluation, the other is follow-up or monitoring evaluation during the disaster period, and the third is post-disaster measurement evaluation. The pre-disaster assessment needs to consider three factors. The first is the intensity and frequency of possible future disasters, the second is t...

AI Technical Summary

Problems solved by technology

When the sampling structure in which the motor shaft is directly wound around the pull wire is used, there is often a problem that the motor shaft is driven by the weight of the seawater sample to rotate, and the motor shaft cannot maintain a static state.

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