Plane two-degree-of-freedom eleven-rod double closed-loop sub-chain type container front-handling mobile crane

The invention discloses a plane two-degree-of-freedom eleven-rod double closed-loop sub-chain type container front-handling mobile crane. The plane two-degree-of-freedom eleven-rod double closed-loop sub-chain type container front-handling mobile crane comprises a suspension arm and a suspension arm hoisting and retracting mechanism, wherein a rotary arm of the suspension arm is hinged with the back part of a frame; a retractable arm is mounted on the rotary arm by a sliding pair; the retractable arm is provided with a clamping device; the suspension arm hoisting and retracting mechanism comprises five-connection-rod mechanism assemblies which are symmetrically arranged on the two sides of the suspension arm; each five-connection-rod mechanism assembly comprises a front four-connection-rod mechanism, a front assembly connection rod, a back assembly connection rod and a back four-connection-rod mechanism; each front four-connection-rod mechanism is arranged on the front part of the rack and each back four-connection-rod mechanism is arranged in the middle of the rack; the lower end of each front assembly connection rod is in compound hinging with a connection rod hinging point of each front four-connection-rod mechanism; the lower end of each back assembly connection rod is in the compound hinging with a connection rod hinging point of each back four-connection-rod mechanism; the upper ends of each front assembly connection rod and each back assembly connection rod are hinged on the suspension arm respectively. The plane two-degree-of-freedom eleven-rod double closed-loop sub-chain type container front-handling mobile crane has the advantages of small movement inertia, flexible track output, high precision, good rigidity, high reliability and the like.