Single beam lifting hook portal crane

Abstract

The invention discloses a single beam lifting hook portal crane. The single beam lifting hook portal crane comprises supporting frames. The middles of the inner sides of the supporting frames are rotationally connected with threaded rods, the inner sides of the lower surfaces of the supporting frames are rotationally connected with wheels, the inner sides of the lower ends of the supporting framesare rotationally connected with positioning wheels, the sides, away from the supporting frames, of movable plates are fixedly connected with a main beam through bolts, the lower surface of a connecting block is fixedly connected with a lifting device through a bolt, first mooring ropes are arranged on the inner side of the lifting device, the lower ends of second pulleys are fixedly connected tothe upper surface of a fixed plate, the inner side of the fixed plate is rotationally connected with a rotary column, and the front ends of fixing devices are fixedly connected with a crank. Accordingto the single beam lifting hook portal crane, a lifting trolley can be conveniently overhauled and maintained, up-and-down climbing during overhauling is avoided, in addition, higher firmness is achieved when materials are lifted through the crane, the materials are conveniently lifted and transferred, and the convenience of overhauling and the practicality of the crane are improved.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a single girder hook gantry crane. Background technique [0002] The gantry crane is mainly used for the loading and unloading of outdoor freight yards or indoor materials. Its overall structure is like a door-shaped frame. It walks on the ground track through two brackets installed on the main beam. Strong versatility and other characteristics have been widely used in factories and freight yards. Gantry cranes are divided into single-girder and double-girder. Both have their own advantages and disadvantages in comparison. The structure of single-girder gantry cranes is simpler. It is more convenient to make and install. [0003] However, during the period of use, the gantry crane needs to be inspected and maintained regularly. Generally, during the inspection, it needs to crawl up and down to carry out the inspection work, which increases the workload and also brings potential s...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a single-girder hook gantry crane to solve the above-mentioned background technology that requires crawling up and down during maintenance, which increases the workload and brings safety hazards. When lifting materials, the firmness is not enough, it is not convenient to lift and transfer materials, which greatly reduces the practicality of the crane

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