Company Filing History:
1 out of 1 
1 out of 26 
1 out of 3 Years Active: 2019-2021
Title: Innovations of Quan Liu
Introduction
Quan Liu is a notable inventor based in Qingdao, China. He has made significant contributions to the field of mechanical manufacturing technology, holding a total of 3 patents. His work focuses on innovative mechanisms that enhance the functionality and efficiency of couplers and locking devices.
Latest Patents
One of his latest patents is an "Automatic uncoupling mechanism for couplers." This invention comprises a coupler knuckle spindle and a driving unit that includes a cylinder body hinged to a coupler body and a telescopic member. The mechanism features a first rotating member, a boss, and a boss stopper, allowing for unidirectional rotation of the coupler knuckle spindle. This design reduces the lateral force during the uncoupling process and enables rapid locking during coupling.
Another significant patent is a "Locking device and opening and closing mechanism having the same." This invention relates to a locking device that includes a casing with a hole and an opening. A rod is positioned within the casing, featuring a fastener and a raised member that facilitates the opening and closing of a fairing. This innovative design enhances the reliability and efficiency of locking mechanisms in mechanical applications.
Career Highlights
Quan Liu has worked with Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd., where he has contributed to various projects and innovations. His experience in this esteemed institution has allowed him to develop and refine his inventive skills.
Collaborations
Throughout his career, Quan Liu has collaborated with notable colleagues, including Hui Liu and Kai Chen. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.
Conclusion
Quan Liu's contributions to mechanical manufacturing technology through his patents and collaborations highlight his role as a significant inventor in the field. His innovative designs continue to influence the industry and pave the way for future advancements.