METHOD FOR TESTING RELIABILITY OF INTERFERENCE CONNECTION OF ULTRA-DEEP COLD ASSEMBLY

WIPO Patent Application WO/2023/087385

A1

A method for testing the reliability of an interference connection of an ultra-deep cold assembly, comprising: assembling a hole component and a shaft component to form an assembly; then placing the assembly into an ultra-deep cold working condition and forming an interference connection between the hole component and the shaft component; and then testing whether the assembly is reliably connected under the ultra-deep cold working condition; if so, concluding that an initial clearance is a qualified clearance; and if not, then adjusting the initial clearance, and then re-testing until a qualified clearance is obtained. Machining and assembling the hole component and shaft component according to the qualified clearance may allow the hole component and shaft component to form, under an ultra-deep cold working condition, a reliable interference connection. In addition, after the shaft component and the hole component are removed from the ultra-deep cold working condition, the clearance between the shaft component and the hole component will return to the initial clearance, and thus the shaft component and the hole component may be easily disassembled.

YANG RILONG (CN)
LIU JIANHONG (CN)
SHAO QING (CN)
LI KAI (CN)
QIAO WEICHAO (CN)

PCT/CN2021/134223

May 25, 2023

November 30, 2021

Click for automatic bibliography generation  

CRRC CHANGCHUN RAILWAY VEHICLES CO LTD (CN)

G01M13/00; B23P11/00

CN109282976A	2019-01-29
CN110513153A	2019-11-29
CN112378305A	2021-02-19
CN112364459A	2021-02-12
CN104057244A	2014-09-24
CN103862223A	2014-06-18
US20170074302A1	2017-03-16

UNITALEN ATTORNEYS AT LAW (CN)

View/Download PDF      PDF Help

Previous Patent: SHOE HAVING HEATING FUNCTION AND POWER SUPPLY ASSEMBLY

Next Patent: OLED DISPLAY PANEL AND OLED DISPLAY APPARATUS