US 11,655,054 B2
Electromagnetic release device for use in vertical falling tests of tri-rotor UAVs
Yongjie Zhang, Shaanxi (CN); Yingjie Huang, Shaanxi (CN); Zhiwen Li, Shaanxi (CN); Kang Cao, Shaanxi (CN); Yazhou Guo, Shaanxi (CN); and Yafeng Wang, Shaanxi (CN)
Assigned to Northwestern Polytechnical University, Xi'an Shaanxi (CN)
Filed by Yongjie Zhang, Shaanxi (CN); Yingjie Huang, Shaanxi (CN); Zhiwen Li, Shaanxi (CN); Kang Cao, Shaanxi (CN); Yazhou Guo, Shaanxi (CN); and Yafeng Wang, Shaanxi (CN)
Filed on Jul. 10, 2021, as Appl. No. 17/372,423.
Claims priority of application No. 202110063585.1 (CN), filed on Jan. 8, 2021.
Prior Publication US 2022/0219837 A1, Jul. 14, 2022
Int. Cl. H01F 7/20 (2006.01); B64F 5/60 (2017.01); B64C 39/02 (2023.01); G01M 7/08 (2006.01); B64U 30/20 (2023.01)
CPC B64F 5/60 (2017.01) [B64C 39/024 (2013.01); G01M 7/08 (2013.01); H01F 7/20 (2013.01); B64U 30/20 (2023.01)] 6 Claims
OG exemplary drawing
 
1. An electromagnetic release device for use in vertical falling tests of tri-rotor UAVs, which is characterized in that it includes:
a mounting frame (1);
multiple clamping and release modules (2), which are respectively arranged on the mounting frame (1) to provide supporting force for the UAV before the test, simultaneously release during the test to quickly remove the supporting force for the UAV, and include:
fixed kits (11), which include an electromagnet mounting frame (3) fixedly connected with the mounting frame (1), and the end of the electromagnet mounting frame (3) away from the mounting frame (1) is equipped with an electromagnetic adsorption assembly;
movable kits (12), which include a ferromagnetic plate (6) matching and connected with the electromagnetic adsorption assembly, one end of the ferromagnetic plate (6) is hinged with the electromagnet mounting frame (3), the other end of the ferromagnetic plate (6) is connected with one end of a connecting plate (7), and the other end of the connecting plate (7) is connected with a UAV connecting plate (8); and
a fine-tuning mechanism, which is arranged on the movable kits (12) and used for adjusting the position of the UAV connecting plate (8).