An anti-sway device for a crane

Abstract

The invention relates to a waggle-preventing device for a crane. The waggle-preventing device for the crane comprises an inhaul cable mechanism, a loading cable mechanism, a towing cable mechanism, aloading cable actuating device, a towing cable actuating device, a pulling block, a pulling block movable pulley and a loading pulley, wherein the loading cable mechanism comprises a loading cable fixed pulley, a loading cable pinch roller, a loading cable actuating device, a loading cable driving device and a loading cable; the towing cable mechanism comprises a towing cable driving device, a wing-shaped supporting rack, a towing cable, a towing cable pinch roller, a towing cable fixed pulley and a towing cable actuating device; the inhaul cable mechanism, the loading cable mechanism and thetowing cable mechanism jointly control the position of a weight in a space, and waggle of the weight is inhibited synchronously depend on a loading cable actuator and two towing cable actuators on thewing-shaped supporting rack. The waggle-preventing device for the crane provided by the invention is large in load and wide in hoisting spatial domain, can play a role of reducing waggle of the hoisted weight along the direction vertical to a lazy arm and the direction of the lazy arm quickly to a great extent, and can meet the demands in a long and narrow cargo placing environment.

Description

technical field [0001] The invention relates to a marine crane, in particular to a crane anti-sway device. Background technique [0002] The marine crane can realize the transfer of goods between ships, and is an important equipment to improve my country's maritime material security and transportation capabilities. Affected by sea waves and sea wind, the hull itself undergoes six-dimensional motions such as rolling and pitching. The disturbance of the cargo by the characteristic wind force causes the cargo under the flexible rope of the crane to sway in space due to inertia, and this phenomenon is particularly prominent when the sea condition deteriorates. Therefore, there is an urgent need to transform or improve the anti-shake technology of traditional cranes. The existing technology is still unable to propose a better electric solution for the anti-sway modification of the ship crane. Patent US6439407B1 proposes to use a single slider for lifting, and add two anti-sway...

AI Technical Summary

Problems solved by technology

The existing technology is still unable to propose a better electric solution for the anti-sway modification of the ship crane

Patent US6439407B1 proposes to use a single slider for lifting, and add two anti-sway ropes on the side of the slider, and then connect the weight to the bottom of the slider through a six-degree-of-freedom parallel rope mechanism. The disadvantage is that the part that needs to be controlled Too many, and the six-degree-of-freedom parallel rope pull mechanism itself requires a certain amount of space

Patent EP2526042B1 proposes a crane that can prevent shaking along the direction of the boom and its vertical direction. Its disadvantage is that the lifting part cannot adapt to the narrow cargo storage environment; patent CN201621218272. The disadvantage is that the weight and force arm of the support arm at the end of the multi-stage movable arm are too large, occupying space, and can only prevent shaking in a single dimension

Patent CN105621275A proposes a crane using a parallel mechanism to prevent shaking. It adds a three-branch parallel mechanism under the crane. The disadvantage is that the gravity of the crane is too large, and the output requirements for the parallel mechanism are relatively high.

Patent US7367464B1, which proposes a crane that uses two rotating beams to control and prevent heavy objects from shaking in the direction of the boom. The disadvantage is that it can only prevent shaking in one dimension

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