Barrel transformation preventing vertical lifting device

Abstract

The invention discloses a barrel transformation preventing vertical lifting device for lifting a barrel. The barrel transformation preventing vertical lifting device comprises a lifting beam body, a fixed back shore block, an adjustable back shore block and a pair of shelf parts, wherein the fixed back shore block is fixedly connected to one end of the lifting beam body; the adjustable back shore block is flexibly connected to the other end of the lifting beam body; the pair of shelf parts are respectively arranged on the two ends of the lifting beam body and are arranged on the upper parts of the fixed back shore block and the adjustable back shore block; the adjustable back shore block has a plurality of waist-shaped holes; the device also comprises a plurality of bolts which respectively penetrate through the waist-shaped holes; and the adjustable bolts are connected with the adjustable back shore block and the lifting beam body, so that the adjustable back shore block can radially move along the barrel. The device provided by the invention has the advantages that the operation is convenient, the manufacture is simple, the device is safe and reliable and can reused, the various sizes of the different barrels are met, the technical requirements are guaranteed, and the processing cost is low.

Description

technical field [0001] The invention relates to a hoisting device, in particular to a vertical anti-deformation hoisting device for a cylindrical body. Background technique [0002] In the process of nuclear power manufacturing, due to the large volume, heavy object and high precision of the steam generator, and the large diameter and thin wall of the cylinder, deformation is easy to occur. Generally, when the cylinder is docked, it adopts a horizontal state. Since the weight of the cylinder itself is between 20 and 40 tons, the supporting force of the steel wire rope and the self-weight of the cylinder will produce extrusion when lifting, which will easily make the cylinder an elliptical shape. However, after being placed on the roller frame and heated during welding, the ellipticity of the cylinder body and the cylinder body is larger, which affects the assembly and welding quality of the steam generator cylinder body. [0003] In the actual production, the deformation an...

AI Technical Summary

Problems solved by technology

Generally, when the cylinder is docked, it adopts a horizontal state. Since the weight of the cylinder itself is between 20 and 40 tons, the supporting force of the steel wire rope and the self-weight of the cylinder will produce extrusion when lifting, which will easily make the cylinder an elliptical shape. However, after being placed on the roller frame and heated during welding, the ellipticity of the barrel and the barrel is larger, which affects the assembly and welding quality of the steam generator barrel.

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