Method for measuring the center of gravity of large thin-walled aluminum alloy castings

By combining the four-point hoisting method with tension sensors and the torque balance principle, the problem of accuracy and efficiency in measuring the center of gravity of large aluminum alloy thin-walled castings was solved, realizing simple and accurate center of gravity measurement and adjustment.

CN115655578BActive Publication Date: 2025-12-16HUBEI SANJIANG HANGTIAN JIANGBEI MASCH ENG CO LTD
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Patent Information

Application Number
CN202211279485.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-19
Publication Date
2025-12-16
Estimated Expiration
2042-10-19

AI Technical Summary

Technical Problem

Existing technologies are insufficient for efficiently and accurately measuring the center of gravity of large, irregular aluminum alloy thin-walled castings. Conventional methods suffer from low measurement accuracy, poor repeatability, and complex operation.

Method used

The four-point hoisting method, combined with tension sensors and retractable slings, is used to calculate the center of gravity of the casting in horizontal and inclined positions based on the principle of torque balance. The casting is then hoisted using a four-sling and a fixed frame, and the position of the center of gravity is calculated using a coordinate system and trigonometric functions.

Benefits of technology

It enables simple and accurate measurement of the center of gravity of large aluminum alloy thin-walled castings, is suitable for outdoor environments, reduces measurement errors, and improves operational efficiency and measurement accuracy.

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Abstract

The application discloses a large aluminum alloy thin-wall casting center of gravity measuring method, four hoisting points are arranged on the thin-wall casting, a plurality of counterweight mounting holes are arranged on the thin-wall casting, the thin-wall casting is hung in a measuring system, values of x G1 , y G1 when the thin-wall casting is horizontal and values of x G2 , y G2 when the thin-wall casting is inclined are calculated through coordinate points, and actual center of gravity position G1(x G1 , y G1 , z G1 ) when the thin-wall casting is in a horizontal position is further calculated. The application is suitable for center of gravity measurement of large aluminum alloy thin-wall castings, and has the characteristics of simple operation, convenient maintenance, high measurement precision and the like; the measuring system is simple and convenient to install, and can be used in open-air outdoor scenes and the like.
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Citation Information

Patent Citations

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  • System and method for measuring gravity center weight of irregular object

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