Gunwale hoisting device for pipe-laying ship

Abstract

The invention provides a gunwale hoisting device for a pipe-laying ship, belonging to the field of davits of ships. The device mainly comprises a base, a winch bed and a boom. The winch bed is welded on the middle rear part of the base and the boom is installed in front of the base. A swing arm mechanism comprises hydraulic cylinders, a lower hinged support and an upper hinged shaft. The lower hinged support is welded at the top of the winch bed. The hydraulic cylinders are installed on the lower hinged support and the upper hinged shaft. The upper hinged shaft is installed at the top of the boom. A hoisting mechanism comprises a hydraulic winch, a rope-arranging pulley, two fixed pulleys, three movable pulleys, a hook, wire ropes, a weight sensor and length measurement sensors. The hydraulic winch is installed in the winch bed. Each fixed pulley is installed on a dual anchorage plate of the boom. A hydraulic oil tank, a motor and an oil pump are installed on the right of the base. An electric control box is installed above the oil tank. A control circuit is installed in the electric control box. The device mainly has the following advantages: the boom is short and wide, the dead-weight is lighter, the hoisting weight is great, the motor power is smaller and the electricity is saved, the manufacturing cost is 1 / 10 of the import price and the device can complete offshore pipeline aligning and shifting, vertical pipe and hoist boat manufacturing, etc.

Description

(1) Technical field [0001] The invention relates to marine outfitting equipment, especially a boat hoist, a davit, a davit, that is, a hoisting device with a boom using a cable, in particular a shipside lifting device for pipe laying . (2) Background technology [0002] The boat lifting machine is an indispensable outfitting equipment for all kinds of ships, and is generally fixedly installed on the side of the ship. Some boat lifters are not only used to lift and release lifeboats, but also have the function of lifting cargo. The pipe-laying ship is a special basic equipment for submarine pipeline laying operations. It can not only lay steel pipes on the seabed while welding, but also complete offshore pipeline alignment, offshore pipeline displacement, offshore riser and horizontal work. Mouth and other tasks. Therefore, the boat lifting machine (Davit) used on the pipe-laying ship must meet the special requirements of the above-mentioned marine operations, and lifting ...

AI Technical Summary

Problems solved by technology

If the pipe-laying marine crane is imported, it is not only expensive, but also the cost of fault maintenance is high, and once a fault occurs, it will be out of service for a long time to be repaired, which will seriously affect the construction progress of the project.

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