Accommodation ladder control and driving system and method

Abstract

The invention discloses an accommodation ladder control and driving system and a method. The system comprises a power motor for driving a ladder overturning device to collect or put down an accommodation ladder through forward rotation or reverse rotation, a control valve for controlling forward rotation or reverse rotation of the power motor and provided with a control and driving loop between the control valve and the power motor, and a control valve arranged on the control and driving loop between the power motor and the control valve for controlling connection or disconnection of the control and driving loop; when the accommodation ladder is collected in place, the accommodation ladder extrudes a valve rod of the control valve, so that the control valve works to cut off the control and driving loop, and the power motor is immediately stopped working; the valve position of the control valve is changed through the accommodation ladder extruding the valve rod of the control valve in the collection in-place process; and the control valve is controlled to cut off a working medium conveying loop of the power motor, so that the power motor stops collecting of the accommodation ladder, and damage to the steel cable or accommodation ladder structure by continuous rotary tightening of the steel rope connected with the accommodation ladder through the power motor after collection in place of the accommodation ladder is prevented.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a gangway control and drive system and method. Background technique [0002] The gangway device is the main facility for people to board or leave the ship, and its reliability is directly related to the personal safety of the crew and passengers. The gangway device is mainly composed of the gangway, the ladder turning device, the gangway control and drive system, and the gangway storage and fastening device. If the operator makes a misjudgment or does not control the operating handle in time, the control cable of the gangway will continue to be tightened after the gangway is in place. Damage, the accumulation of this kind of damage over time will cause the structure of the gangway to be fatigued and affect the service life of the gangway; if it is serious, it will cause imperceptible damage to the interior of the elevator cable or cause some steel wires inside the cable to break, ...

AI Technical Summary

Problems solved by technology

The gangway device is mainly composed of the gangway, the ladder turning device, the gangway control and drive system, and the gangway storage and fastening device. If the operator makes a misjudgment or does not control the operating handle in time, the control cable of the gangway will continue to be tightened after the gangway is in place. Damage, the accumulation of this kind of damage over time will cause the structure of the gangway to be fatigued and affect the service life of the gangway; if it is serious, it will cause imperceptible damage to the interior of the elevator cable or cause some steel wires inside the cable to break, burying serious security risks

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