Hydraulic folding arm type A type portal frame

Abstract

The invention relates to a hydraulic folding arm type A type portal frame. The hydraulic folding arm type A type portal frame comprises a base, wherein a main arm and a folding arm which is movably connected with the main arm are movably connected to the base; the main arm is connected with the base through a first moving seat; a folding arm oil cylinder is connected between the folding arm and the main arm; a derricking cylinder is connected between the main arm and the base and connected with the base through a second movable seat; a main arm limiting mechanism is arranged on the base and comprises a front baffle plate and a rear baffle plate which are arranged on two sides of the first movable seat; a front supporting inclined plane is arranged on one side, corresponding to the main arm, of the front baffle plate; a rear supporting inclined plane is arranged on one side, corresponding to the main arm, of the rear baffle plate. The hydraulic folding arm type A type portal frame has relatively-great frontward extending distance and backward retracting distance; the derricking cylinder, the base and the main arm form a triangular structure which is a whole, so the integral stress is relatively stable.

Description

technical field [0001] The invention relates to an A-type gantry, in particular to a hydraulic folding arm type A-type gantry. 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-s...

AI Technical Summary

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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