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1. (WO2018040135) A HIGH ACCURACY MEASURING DEVICE FOR MEASURING LARGE MASS

Pub. No.:    WO/2018/040135    International Application No.:    PCT/CN2016/099217
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Oct 13 01:59:59 CEST 2016
IPC: G01G 23/01
Applicants: NATIONAL INSTITUTE OF METROLOGY
Inventors: WANG, Jian
CAI, Changqing
REN, Xiaoping
LI, Tao
HU, Manhong
WANG, Xiaolei
JI, Honglei
WANG, Xiang
CHEN, Ping
Title: A HIGH ACCURACY MEASURING DEVICE FOR MEASURING LARGE MASS
Abstract:
A measuring device for measuring the mass of a weight, comprising a main frame(100), a main (beam 200) supported on the main frame (100) and comprising a central knife (201) and two side knives (202, 202') parallel with the central knife( 201); a balancing system (300) loaded on one end of the main beam (200) and comprising a set of counterweights (301); a weighting system (400) loaded on the other end of the main beam (200); a weight transportation system (500) capable of transporting and loading a standard weight (503) or a test weight (504) into the weighting system (400) and capable of unloading and transporting them away from the weighting system (400); and a control system (600). The central knife (201) and the two side knives (202, 202') are made from metal with a high temperature-cryogenic cycling process. The central knife (201) and the two side knives (202, 202') are configured to be adjusted in parallelism with a three-coordinates measuring machine. The control system (600) is adapted to control the balancing system (300) and the weighting system (400) to synchronously load or unload the balancing system (300) and the weighting system (400).