A kind of marine heavy crane and underwater installation process

Abstract

The invention discloses a heavy crane for ships and an underwater installation technology, the heavy crane for the ships comprises a support base, a tower body, a lifting arm, a steel wire rope and a hook, the lower end of the tower body is connected with the support base, the lifting arm is connected with the flange face of the tower body, one end of the steel wire rope is connected with the lifting arm, the other end of the steel wire rope is connected with the hook, and the support seat comprises a center seat, a plurality of adjustable auxiliary seat sets and an electric device. The underwater installation technology for the heavy crane for the ships is as follows: pre order preparation work, a tower body installation process, a lifting arm installation process and finishing work, the main installation steps are as follows: using a 200t engineering floating crane to lift the tower body about 110t for alignment connection with the support seat, using two quay cranes for combined lifting to lift the lifting arm about 65t, and aligning the flange face of the lifting arm for connection with the tower body. The heavy crane for the ships can shorten the shipbuilding cycle, and has the advantages of ingenious design, convenient installation and the like.

Description

technical field [0001] The invention belongs to the field of heavy cranes, in particular to a marine heavy crane and an underwater installation process. Background technique [0002] Heavy-duty marine cranes are specially designed and manufactured for effective and safe loading and unloading of multi-purpose ships and container ships. This will inevitably force the crane to be installed underwater after it arrives. However, the weight of the heavy crane tower is more than 100t, and the wharf shore crane cannot meet the lifting requirements, which affects the construction period of the ship. [0003] The support is an important tool used in the installation of the crane, which needs to be made according to the model and size of the crane. Generally, it is necessary to make various types of supports to meet the requirements of use; to install different types of cranes at the same station, it is necessary to use overhead cranes to frequently transfer the supports; frequent tra...

AI Technical Summary

Problems solved by technology

Generally, it is necessary to make various types of supports to meet the requirements of use; to install different types of cranes at the same station, it is necessary to use overhead cranes to frequently transfer the supports; frequent transfers lead to deformation of the working plane of the supports, which seriously affects the ring gear of the crane Installation plane accuracy

Due to the large number of supports produced, poor versatility, and frequent transfers, the production cost is high and the use efficiency is low, which requires a lot of financial, material and manpower

In addition, the deformation of the working plane seriously affects the installation plane accuracy of the crane ring gear

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