THERMAL STRESS RELIEVING STRUCTURE - CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Title:

THERMAL STRESS RELIEVING STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2023/087409

Kind Code:

A1

Abstract:

A thermal stress relieving structure. Under normal temperature conditions, a shrinkage gap is present between a mounting recess (11) and a T-shaped connector (23); a shrinkage rate of a main pressing plate (4) is set to be smaller than that of a main shrinkage body (1); under low temperature conditions, the shrinkage amount of the main shrinkage body (1) is greater than that of the main pressing plate (4), and after the main shrinkage body (1) shrinks, two mounting recesses (11) on the main shrinkage body approach each other; a relative displacement amount of a first main bearing component (21) and a second main bearing component (22) is smaller than the shrinkage amount of the main shrinkage body (1) due to supporting of the main pressing plate (4). The shrinkage gap for sliding of the T-shaped connector (23) is reserved in a shrinkage direction of the main shrinkage body (1), so that each mounting recess (11) is filled and pressed in a sliding direction of the T-shaped connector (23), stress transmitted to the first main bearing component (21) and the second main bearing component (22) due to synchronous shrinkage of the mounting recess and the T-shaped connector is avoided, stress concentration is avoided, and the safety of a supporting structure is guaranteed.

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Inventors:

HU HAO (CN)
LI KAI (CN)
LIU JIANHONG (CN)
QIAO WEICHAO (CN)

Application Number:

PCT/CN2021/134901

Publication Date:

May 25, 2023

Filing Date:

December 01, 2021

Export Citation:

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Assignee:

CRRC CHANGCHUN RAILWAY VEHICLES CO LTD (CN)

International Classes:

F16B4/00; D07B7/16

Foreign References:

CN103066800A	2013-04-24
JPH05264842A	1993-10-15
CN110186377A	2019-08-30
CN211398145U	2020-09-01
CN1177561A	1998-04-01
CN2914308Y	2007-06-20
CN207229918U	2018-04-13
US20080100158A1	2008-05-01

Attorney, Agent or Firm:

UNITALEN ATTORNEYS AT LAW (CN)

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