Automatic marine telescopic accommodation ladder

Abstract

The invention relates to an automatic marine telescopic accommodation ladder. The automatic marine telescopic accommodation ladder comprises a two-level accommodation ladder body, a telescopic driving device, a hoisting winch and a control system. The two-level accommodation ladder body comprises an upper accommodation ladder body and a lower accommodation ladder body. The top end of the upper accommodation ladder body is hinged to a ship body upper platform through a shaft pin. The upper accommodation ladder body and the lower accommodation ladder body are connected through a sliding rail. The telescopic driving device is installed between the upper accommodation ladder body and the lower accommodation ladder body. After steering transition through a pulley, the hoisting winch is connected with the tail end of the lower accommodation ladder body. The control system comprises a shaft pin type tension sensor installed on the pulley, an angle detection sensor installed at the top end of the upper accommodation ladder body, and a programmable logic controller (PLC). Electrical signals are transmitted between the PLC and the tension sensor, between the PLC and the angle detection sensor, between the PLC and the telescopic driving device and between the PLC and the hoisting winch respectively.

Description

technical field [0001] The invention relates to the field of ship design, and in particular relates to a marine automatic retractable gangway. Background technique [0002] With the development of the shipbuilding industry, the single-section gangway used on ships is far from being able to meet the needs. Therefore, the shipbuilding industry of various countries in the world has carried out a lot of research and improvement on the type and structure of the gangway, and created some gangway devices that are easy to use, flexible to operate, economical, durable, safe and reliable. The double-section telescopic gangway has replaced the flip-type and single-section gangway devices in the past. The so-called double-section telescopic gangway device is to make the lower ladder of the gangway device slide in and out smoothly from the upper ladder through the pulling of the gangway winch according to the draft state of the ship, so as to achieve the purpose of safe use. At present...

AI Technical Summary

Problems solved by technology

But at the same time, there are also the following disadvantages: 1. The expansion and contraction of the current double-section telescopic gangway completely depends on the manual retraction of a winch to realize the expansion and contraction of the lower section of the gangway. Once the stress on the gangway is not balanced, the telescopic part is prone to jam Phenomenon; manual intervention is required

2. Generally, the double-section telescopic gangway cannot follow the change of the draft of the ship, and it will automatically expand and contract. It needs to manually retract and release the winch cable to achieve the expansion and contraction of the gangway, and it cannot expand and contract independently.

3. During the expansion and contraction process of the current double-section telescopic gangway, the lower platform follows the movement of the gangway at the same time. If the lifting range of the ship is relatively large, the moving range of the lower platform of the gangway will be relatively large, which cannot be applied on a relatively small transitional platform.

4. When the ship moves up and down, left and right due to waves and the lower platform is suspended, the general double-section telescopic gangway cannot alarm in time, causing danger to people walking on the gangway

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