Davit carrying moving-lifting type small boat retracting-releasing device

Abstract

The invention relates to a davit carrying moving-lifting type small boat retracting-releasing device. A three-stage telescopic rail part is arranged on a deck of a mother ship, and the third-stage telescopic rail part comprises a fixed rail fixed to the deck, a middle rail which can extend outside the hull of the mother ship or retract inside the hull of the mother ship and a last-stage rail; a telescopic power part is arranged on the side face of the fixed rail, and a lifting power part and a lifting and transmitting part are arranged above the last-stage rail; the lifting power part drives an active lifting sprocket wheel to draw a chain from a chain storage box or put a chain in the chain storage box through a coupling, the movement direction of the chain is changed into vertical movement through a transition sprocket wheel B on a corner sprocket wheel assembly; and a davit part is connected to the tail end of the chain through a chain shackle assembly. The davit carrying moving-lifting type small boat retracting-releasing device is simple and reasonable in structure, and the safety and reliability of the device is further improved; a small boat is in a state of horizontal moving in the process of retracting and releasing the small boat, the small boat floats on the surface of water and is automatically separated from the davit after the small boat enters the water, and thecomfort of passengers of the small boat and the safety of the passengers and materials in the retracting and releasing process are improved.

Description

technical field [0001] The invention relates to the field of retractable and retractable small boats, in particular to a mobile elevating and retractable small boat retractable device on a boat frame which is suitable for a mother ship with a high speed sea condition. Background technique [0002] Life-saving equipment is a statutory safety equipment for ships. Small boats and small boat retractable devices are important components of life-saving equipment and one of the important deck machinery on motherships (ships). They belong to the technical field of marine equipment; the main tasks of small boats It is the crew to complete tasks such as surface operations, rescue, personnel and material transportation and transfer; the task of the small boat retracting device is to ensure that the small boats on the mother ship (ship) and the personnel and materials on the small boats are quickly and safely lowered to the water surface. , and safely recover the small boat, personnel a...

AI Technical Summary

Problems solved by technology

[0003] Warships (warships, customs, sea surveillance, fishery administration, maritime affairs, fire protection, and public security border ships, etc.) are generally equipped with several high-speed small boats to make up for the low speed of large ships and the inability to operate in shallow water areas due to their large hulls. Insufficient to perform tasks in narrow waters and to complete tasks such as surface operations, rescue, personnel and material transportation and transshipment, traditional small boat retractable devices generally use marine cranes, davits, etc. It is slow, and the safety is not enough, and it is impossible to carry out retraction and deployment operations in high sea conditions or when the mother ship is sailing. Safety accidents related to the on-board release device of small boats continue to occur, which cannot meet the requirements for speed, safety and reliability when performing tasks. Requirements, in recent years, a stern slide type retractable method has been adopted at home and abroad, but the opening of the stern slide type is limited by the hull structure, sometimes the hull structure has to be changed to open the stern slideway, and the stern slideway When retracting and launching the small boat, the inclination angle of the slideway affects the water entry and exit of the small boat, so the stern of the small boat is easy to enter the water, and the inclination angle of the small boat when entering and exiting the water will bring safety hazards to the personnel and materials on the boat.

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