Title:
SMA-WIRE-DRIVEN REUSABLE RELEASE MECHANISM WITH SELF-RESETTING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2024/060313
Kind Code:
A1
Abstract:
Disclosed in the present invention is an SMA-wire-driven reusable release mechanism with a self-resetting function. The present invention uses a two-stage load reduction and one-stage release structure. First-stage load reduction involves: a compression rod and a hoop section, and an inclined block and a housing or a sliding block match each other by means of inclined faces, such that most of tension loads of the compression rod can be effectively transmitted to the housing, and only the remaining small portion of loads are transmitted to a thrust bearing. Second-stage load reduction involves: molybdenum disulfide lubricating coatings are sprayed to balls in the thrust bearing, such that a friction force can be effectively reduced, and thus torque transmitted to a driving shaft is reduced, and an axial load is effectively borne. One-stage release involves: the driving shaft drives the thrust bearing to rotate at a certain angle, such that an upper ring of the thrust bearing drops to release a certain axial clearance. The structure can greatly improve the bearing capacity of the mechanism and simultaneously improve the reliability of release. The present invention can achieve self-resetting, and has a large release load, strong vibration resistance and impact resistance and high stability.
Inventors:
YAN XIAOJUN (CN)
YAN ZEHONG (CN)
QU LEI (CN)
RAO ZHIXIANG (CN)
WANG JU (CN)
LENG JIAMING (CN)
WAN WEIFENG (CN)
YAN ZEHONG (CN)
QU LEI (CN)
RAO ZHIXIANG (CN)
WANG JU (CN)
LENG JIAMING (CN)
WAN WEIFENG (CN)
Application Number:
PCT/CN2022/123823
Publication Date:
March 28, 2024
Filing Date:
October 08, 2022
Export Citation:
Assignee:
BEIJING UNIV OF AERONAUTICS AND ASTRONAUTICS (CN)
International Classes:
B64G1/64
Foreign References:
| CN113830329A | 2021-12-24 | |||
| CN109774985A | 2019-05-21 | |||
| CN108190051A | 2018-06-22 | |||
| CN101913436A | 2010-12-15 | |||
| CN110654576A | 2020-01-07 | |||
| US6450064B1 | 2002-09-17 |
Attorney, Agent or Firm:
BEIJING INSTITUTE OF TECHNOLOGY PATENT CENTER (CN)
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