Title:
HOLE WALL THICKNESS MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/100880
Kind Code:
A1
Abstract:
A hole wall thickness measuring device, comprising hooks, a bias spring, a measuring rod, and a measuring rod sleeve. The measuring rod comprises a measuring part and an operating part. The measuring part comprises a conical section, and an actuating member is provided at the operating part. The measuring rod sleeve is provided outside the measuring rod and is provided with a main scale. The hooks have measuring surfaces and are connected to the measuring rod sleeve by means of the bias spring. The bias spring radially biases the hooks inwards such that the hooks fit on the conical section. The hooks can radially extend out or retract in holes provided at corresponding positions on the measuring rod sleeve along with the axial movement of the conical section. The measuring device of the present invention can stably hook the inner side of a hole wall to facilitate measurement.
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Inventors:
SONG HONGYUAN (CN)
SHAN WENJUAN (CN)
WEN JIE (CN)
ZHU WEIBIN (CN)
SHAN WENJUAN (CN)
WEN JIE (CN)
ZHU WEIBIN (CN)
Application Number:
PCT/CN2018/110934
Publication Date:
May 31, 2019
Filing Date:
October 19, 2018
Export Citation:
Assignee:
COMMERCIAL AIRCRAFT CORP CN (CN)
SHANGHAI AIRCRAFT DESIGN AND RES INSTITUTE OF COMMERCIAL AIRCRAFT CORPORATION OF CHINA (CN)
SHANGHAI AIRCRAFT DESIGN AND RES INSTITUTE OF COMMERCIAL AIRCRAFT CORPORATION OF CHINA (CN)
International Classes:
G01B5/06
Foreign References:
| CN108007314A | 2018-05-08 | |||
| CN203274639U | 2013-11-06 | |||
| CN103245270A | 2013-08-14 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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