Double-beam cantilever crane

Abstract

The invention discloses a double-beam cantilever crane. The double-beam cantilever crane comprises a frame and a first swing arm which is arranged on the frame in a swinging manner, wherein a push-pull structure which is connected with the first swing arm and is used for driving the first swing arm to swing and lift is horizontally arranged on the frame; a power assembly which is connected with the push-pull structure is arranged below the frame; a second swing arm is movably arranged on the first swing arm in parallel; a hook which is used for connecting with a heavy object is movably arranged at the end of the second swing arm; the frame moves to drive the whole crane to move along with the frame; the power assembly works to drive the push-pull structure to act; the push-pull structure drives the first swing arm to swing and lift; when the first swing arm swings and lifts, the second swing arm is driven to swing and lift along with the first swing arm; the power assembly also drivesa transmission mechanism to drive a winding structure to act; the winding structure drives the second swing arm to slide in parallel along the first swing arm, so that the lifting height is further increased; and the double-beam cantilever crane can stretch and retract to lift while swinging and lifting, so that a double-beam lifting function is realized, and the lifting height is higher.

Description

technical field [0001] The invention relates to the field of hoisting and lifting, in particular to a double-girder cantilever crane. Background technique [0002] Cantilever crane is a small and medium-sized lifting equipment developed in recent years. It has a unique structure, is safe and reliable, and has the characteristics of high efficiency, energy saving, time-saving, labor-saving, and flexibility. Other conventional lifting equipment shows its superiority. [0003] The cantilever crane is a cantilever crane composed of a column and a cantilever that can rotate around a fixed column fixed on the base, or the cantilever is rigidly connected to the rotating column and rotates together relative to the vertical centerline within the base support. It is suitable for occasions where the lifting capacity is not large and the service range of the operation is circular or fan-shaped. [0004] At present, most of the existing cantilever cranes can only rely on the cantilever...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the existing cantilever cranes can only rely on the cantilever for circular or fan-shaped swing. Among them, the lifting height is limited, which greatly limits the lifting height. Therefore, it is necessary to develop a cantilever crane that can increase the lifting height.

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