Large-scale crane hook set

Abstract

The invention discloses a large-scale crane hook group, which mainly comprises pulleys, pulley shafts, a spherical roller bearing, a spherical roller pushing force bearing, hook nuts and a shedding preventing chain, and the large-scale crane hook group also comprises pulley supporting frames, a hinge shaft I, a balance beam, a hinge shaft II, a hook shaft, an upper part of a hook body and the hook body, wherein the pulleys are divided into two groups by two pulley shafts, and each group is connected with one pulley supporting frame to form two pulley groups; the pulley supporting frames are respectively connected with the balance beam through the hinge shaft I, the balance beam is connected with the hook shaft through the hinge shaft II, the lower part of the hook shaft is connected with the hook nuts through screw threads, and the upper part of the hook body is connected to the hook body in a welding form. The large-scale crane hook group solves the problem of deflexion caused by the change in length of a steel wire rope and makes the processing and the assembly of large-scale forging hook shafts and large-scale forging hook bodies realize simply and easily. The large-scale crane hook group has the advantages of simple structure style, convenient assembly and low cost.

Description

technical field [0001] The invention relates to a hoisting machine, in particular to a hook set of a large hoisting machine. Background technique [0002] With the increase of demand for offshore drilling platforms, the installation and maintenance of drilling platforms has become more and more busy. In order to speed up the installation and maintenance process of drilling platforms, shorten the manufacturing cycle, and reduce costs at the same time, the manufacturer installed in Safe Challenger-SSCV The lifting capacity of the crane on the semi-submersible platform is required to reach 1500t. In order to meet the needs of increased lifting capacity, the hook group in the 1500t crane hook group needs to adopt the form of a four-claw hook. This kind of four-claw hook with scattered lifting points can bear relatively large loads, but it has the following disadvantages: [0003] 1. Due to the large size and self-weight of the four-claw hook itself, it is difficult to process a...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the large size and self-weight of the four-claw hook itself, it is difficult to process and install if it adopts an integral form;

[0004] 2. Since the wire ropes wound on the pulley of the hook group come from two independent drums, the deviation of the length of the two wire ropes will cause the deflection of the hook group

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