The invention discloses a lifting trackless portal crane which comprises a girder. A lifting hoist is arranged on the girder. The two ends of the girder are fixed to the top ends of two supporting legs respectively, each supporting leg is fixed to a lower cross beam, and a universal walking wheel is arranged at the bottom of each lower cross beam; the supporting legs are telescopic legs with height adjustable, and each telescopic leg is composed of a lower supporting leg fixedly connected with the corresponding lower cross beam, an upper supporting leg fixedly connected with the girder and a height adjusting device; each upper supporting leg is sleeved with the corresponding lower supporting leg to form a sliding sleeve telescopic structure; each height adjusting device is composed of a steel wire rope pulley block and a steel wire rope winding and unwinding control device, a movable pulley of each steel wire rope pulley block is fixed to the lower end of the corresponding upper supporting leg, and fixed pulleys of each steel wire rope pulley block are fixed to the two sides of the upper end of the corresponding lower supporting leg. The lifting trackless portal crane is simple in structure, low in weight and flexible in moving; the girder can be manually ascended and descended, operation is convenient, and the application range is wide.
Lifting trackless portal crane
2015-12-02
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
Ground trackless semi-portal double-girder portal crane
Europäisches Patentamt | 2023
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