A-type gantry

Abstract

The invention relates to an A-type gantry. The A-type gantry comprises a base. A cantilever crane and a derricking cylinder are movably connected to the base. A first movable seat and a second movable seat are arranged on the base. The cantilever crane is connected with the base through the first movable seat. The derricking cylinder comprises a cylinder block and a telescopic rod. The cylinder block is connected with the base through the second movable seat. The telescopic rod is movably connected with one side of the cantilever crane. A cantilever crane limiting mechanism is arranged on the base. The cantilever crane limiting mechanism comprises a front baffle and a rear baffle, and the front baffle and the rear baffle are arranged on the two sides of the first movable seat. The side, corresponding to the cantilever crane, of the front baffle is provided with a front supporting bevel. The side, corresponding to the cantilever crane, of the rear baffle is provided with a rear supporting bevel. The forward stretching distance and the backward retracting distance of the A-type gantry are both large. The derricking cylinder, the base and the cantilever crane are of a triangle structure and form an integral whole. The overall stress of the A-type gantry is relatively stable.

Description

technical field [0001] The invention relates to an A-type door frame. Background technique [0002] The 21st century is the century of marine economy. With the increasing scarcity of global resources, the worldwide competition for marine resources is also intensifying. All countries are committed to building new ocean-going scientific research ships, and the demand for deep-sea equipment is also rising. The global marine equipment industry The outlook is very optimistic. All countries are investing a lot of money in the research of higher-end scientific research winches, such as AHC function (winch with automatic wave compensation function), constant tension winch and so on. Due to the relatively late start of my country's deep-sea scientific research equipment industry and the vigorous development of the ocean in recent years, the overall level of technology still has a large gap compared with foreign advanced deep-sea scientific research equipment companies. At present, ...

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Problems solved by technology

[0004] When the current scientific research winch is in use, the steel wire rope needs to be supported by the mast, so that the hook at the end of the steel wire rope protrudes toward the outside of the hull and facilitates the retraction of the steel wire rope. The mast structure of the current scientific research winch is complicated, and the main arm The swing range is small, and when the oil cylinder breaks, the main arm of the mast is easy to topple, posing a safety hazard

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