Research on the stress states on the four-claw lifting clamp for hydrogenation reactor cylinders forging
YANG Ming
ZHOU Meng
WANG Zhaohua
SHI Haopeng
ZHAO Ruijie
HU Xiangjun
SHI Qixing
Abstract：The four-claw lifting clamp is a hoisting tool with strong operational flexibility and environmental adaptability,which has achieved excellent results in the thermal processing and manufacturing of large hydrogenation reactor cylinders.In order to grasp the stress state and strength information of the clamp arm during the lifting process,conducts a study on its stress state based on theoretical modeling and simulation analysis.Based on the working principle of the four-claw lifting clamp,its static equilibrium equation is established,and the stress theoretical equations of different cross-sections are derived,and the analytical calculation of stress state is achieved.On this basis,a finite element model of the clamp arm is established,and stress information of different cross-sections is obtained through simulation analysis.The results show that the average difference in stress values between the upper and lower surfaces of the clamp arm obtained from analytical calculation and simulation analysis is2.51%and2.86%,respectively,with high consistency.This indicates that the established stress theory equation can accurately reflect the surface stress state of the clamp arm,providing a theoretical basis for the design and strength verification of the four jaw clamp.
Keywords：four-claw lifting clampforce analysisstress statefinite element analysis
Publication Date：2025-09-20
Online Publishing Date：2025-10-28(First online date of this platform, not the publication date of the document)
Pages：7( 104-110 )