Steam turbine rotor lifting tool

Abstract

The invention discloses a steam turbine rotor lifting tool, and belongs to the technical field of steam turbine rotors. The steam turbine rotor lifting tool comprises a lifting seat, lifting ropes, a hook, a balance mechanism, moving mechanisms and a balance detection mechanism, wherein the top of the lifting seat is connected to the hook through four groups of lifting ropes and is connected to a crane through the hook, and the balance mechanism is arranged in the middle of the bottom of the lifting seat; and the moving mechanisms are arranged on the two sides of the lifting seat, and the lifting seat is connected to lower suspension assemblies at the bottom through the moving mechanisms at the two ends. When the device is used, firstly, the lower suspension assemblies are hung on shaft necks at the two ends of a rotor respectively, the distance between the lower suspension assemblies of the device can be adjusted through the moving mechanisms at the bottom of the lifting seat, and meanwhile the balance adjusting direction of the device is judged according to data displayed by the crane scales on the two lifting ropes in the middle, so that preliminary balance adjustment is carried out through the balance mechanism on the lifting seat, and the lifting tool meets the lifting condition.

Description

technical field [0001] The invention relates to the technical field of steam turbine rotors, in particular to a lifting tool for steam turbine rotors. Background technique [0002] During the steam turbine manufacturing process, the steam turbine rotor needs to be lifted according to the processing and assembly requirements. The steam turbine rotor is a large workpiece, and special lifting tools must be used to ensure the safety of the workpiece and people. The lifting tool is mainly composed of a beam and a pair of hangers suspended on the beam. The slings of the two hangers are respectively hung on the journals at both ends of the rotor, and the driving hook is hung on the center of gravity of the beam. When lifting, keep the balance of the beam to prevent If the workpiece overturns, keep the sling vertical to prevent it from scratching the blade. [0003] Existing hoisting tools are designed according to the actual weight and size of each rotor, and its load capacity, s...

AI Technical Summary

Problems solved by technology

[0003] The existing lifting tools are designed according to the actual weight and size of each rotor, and its load capacity and sling span are fixed, so there is no universality

However, there are many models and specifications of steam turbines, and the manufacturer must configure many sets of lifting tools for backup, which consumes a lot of materials and increases the manufacturing cost.

Due to the long manufacturing cycle and small batches of steam turbines, a single order is usually made. Most lifting tools have been idle for a long time, occupying the tool warehouse, and the maintenance and storage costs are high.

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