Auxiliary device for maintenance of luffing mechanism and gantry crane

Abstract

The invention provides an auxiliary device for maintenance of a luffing mechanism and a gantry crane, and relates to the field of crane maintenance. The auxiliary device comprises a first sliding rodand a second sliding rod which are hinged to a stand column, wherein the first sliding rod matches with a first trolley moving in the axial direction of the first sliding rod, the first sliding rod horizontally rotates around a vertical line where a hinged point of the first sliding rod and the stand column is located, the second sliding rod is hinged to a balance beam through a connecting rod andused for jointly rotating in a vertical plane under the action of the balance beam, a second trolley moving in the axial direction of the second sliding rod matches with the second sliding rod, and the first trolley and the second trolley are used for cooperatively conveying luffing mechanism parts. The auxiliary device for maintaining the luffing mechanism is arranged on a four-bar linkage balance structure of the crane in advance, during maintaining, the auxiliary device binds and restrains the four-bar linkage balance structure of the crane, a four-bar linkage maintaining crane assembly and a rotary maintaining crane assembly are adopted, lifting lugs do not need to be installed and welded any more, nondestructive construction is achieved, restorative construction is not needed, and the whole maintenance efficiency is improved.

Description

technical field [0001] The disclosure relates to the field of crane maintenance, in particular to an auxiliary device for the maintenance of a luffing mechanism and a portal crane. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The maintenance of the luffing mechanism of the portal crane is mainly completed by external equipment such as cranes, wire ropes, and supporting tooling. The maintenance process requires a lot of work such as hoisting, welding, transfer, repair, etc. The construction volume is large and the process is cumbersome and complicated. For example, dismantling the transfer rack requires the following procedures: 1. Weld the boom and the balance system through tooling, and bind them firmly; 2. Weld the lifting lugs on the top of the luffing platform, weld the lifting lugs under the balance beam, remove the rack, 3. Af...

AI Technical Summary

Problems solved by technology

[0004] The inventor found that there are many deficiencies in the maintenance of the luffing mechanism of the portal crane at present: 1. The maintenance operation is inconvenient. The luffing mechanism needs to be lifted and transferred by external equipment during maintenance. During the hoisting process, the column, wire rope, balance Due to the space interference of beams and other components, the lifting point needs to be replaced many times during the hoisting process, and multiple cranes need to be jointly operated at the same time; 2. The amount of operation is large and the cost is high. The frame and balance system are firmly bound, requiring a lot of tooling and welding work; after the maintenance work is completed, the binding parts must be disassembled, hoisted, and the paint repaired, etc.

The whole process requires a lot of construction and requires more labor and maintenance time; 3. A single maintenance takes a long time. When performing maintenance on the parts of the luffing mechanism, due to the cumbersome process and complicated steps, it is difficult to dispatch external equipment and arrange auxiliary equipment. Structure takes a lot of time

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