Dr. Xuewen Wang received his B.E. in Mechanical Engineering and Automation from Taiyuan University of Science and Technology, Shanxi, in 2001, and the M.E. and Ph.D. degrees in Mechanical Design and Theory from Taiyuan University of Technology, Shanxi, in 2004 and 2008, respectively. From September 2008 to Jun 2010, Dr. Wang was in College of Mechanical and Vehicle Engineering, Taiyuan University of Technology working as Lecturer. From June 2010 to December 2016, Dr. Wang was in the same college working as Associate Professor. Since December 2016, Dr. Wang has been in the same college working as Professor. Dr. Wang focuses on the research of modern mechanical design theory and method. His recent research interests include discrete element of mining machinery, optimization design of mining machinery and equipment, digitalization and informatization of mining machinery and equipment, virtual reality design of mining machinery products, etc. Dr. Jiacheng Xie receivedhis B.E. in Mechanical Engineering and Automation from Taiyuan University of Science and Technology, Shanxi, in 2012, the M.E. and Ph.D. degrees in Mechanical Design and Theory from Taiyuan University of Technology, Shanxi, in 2015 and 2018, respectively. Dr. Xie has been in College of Mechanical and Vehicle Engineering, Taiyuan University of Technology working as Associate professor since 2018. His recent research interests include digitalization and informatization of mining machinery and equipment, virtual reality design of mining machinery products.  Suhua Li received her B.E. in Mechanical Design Manufacture and Automation Major from University of Jinan, Shandong, in 2018, the M.E. degrees in Mechanical Design and Theory from Taiyuan University of Technology, in 2021, Shanxi. She has been pursuing the Ph.D degree in Mechanical Design and Theory from Taiyuan University of Technology since 2021, in Shanxi.

• Preface.- Application overview.- Overall design of the system.- Model conversion technology of virtual simulation elements and establishment of model base.- Virtual assembly method based on OSG.- Virtual assembly method based on UG.- Human-computer interaction in virtual assembly.- Networked method of virtual assembly.- Running method and technology of virtual single machine simulation.- Method and technology of virtual collaborative simulation running.- Virtual planning operation technology.- Sensor information construction and virtual reality interaction technology.- Method of condition monitoring and virtual simulation.- Virtual monitoring system.- Conclusion.

Dr. Xuewen Wang received his B.E. in Mechanical Engineering and Automation from Taiyuan University of Science and Technology, Shanxi, in 2001, and the M.E. and Ph.D. degrees in Mechanical Design and Theory from Taiyuan University of Technology, Shanxi, in 2004 and 2008, respectively. From September 2008 to Jun 2010, Dr. Wang was in College of Mechanical and Vehicle Engineering, Taiyuan University of Technology working as Lecturer. From June 2010 to December 2016, Dr. Wang was in the same college working as Associate Professor. Since December 2016, Dr. Wang has been in the same college working as Professor. Dr. Wang focuses on the research of modern mechanical design theory and method. His recent research interests include discrete element of mining machinery, optimization design of mining machinery and equipment, digitalization and informatization of mining machinery and equipment, virtual reality design of mining machinery products, etc. Dr. Jiacheng Xie receivedhis B.E. in Mechanical Engineering and Automation from Taiyuan University of Science and Technology, Shanxi, in 2012, the M.E. and Ph.D. degrees in Mechanical Design and Theory from Taiyuan University of Technology, Shanxi, in 2015 and 2018, respectively. Dr. Xie has been in College of Mechanical and Vehicle Engineering, Taiyuan University of Technology working as Associate professor since 2018. His recent research interests include digitalization and informatization of mining machinery and equipment, virtual reality design of mining machinery products.  Suhua Li received her B.E. in Mechanical Design Manufacture and Automation Major from University of Jinan, Shandong, in 2018, the M.E. degrees in Mechanical Design and Theory from Taiyuan University of Technology, in 2021, Shanxi. She has been pursuing the Ph.D degree in Mechanical Design and Theory from Taiyuan University of Technology since 2021, in Shanxi.

• Preface.- Application overview.- Overall design of the system.- Model conversion technology of virtual simulation elements and establishment of model base.- Virtual assembly method based on OSG.- Virtual assembly method based on UG.- Human-computer interaction in virtual assembly.- Networked method of virtual assembly.- Running method and technology of virtual single machine simulation.- Method and technology of virtual collaborative simulation running.- Virtual planning operation technology.- Sensor information construction and virtual reality interaction technology.- Method of condition monitoring and virtual simulation.- Virtual monitoring system.- Conclusion.

Dr. Xuewen Wang received his B.E. in Mechanical Engineering and Automation from Taiyuan University of Science and Technology, Shanxi, in 2001, and the M.E. and Ph.D. degrees in Mechanical Design and Theory from Taiyuan University of Technology, Shanxi, in 2004 and 2008, respectively. From September 2008 to Jun 2010, Dr. Wang was in College of Mechanical and Vehicle Engineering, Taiyuan University of Technology working as Lecturer. From June 2010 to December 2016, Dr. Wang was in the same college working as Associate Professor. Since December 2016, Dr. Wang has been in the same college working as Professor. Dr. Wang focuses on the research of modern mechanical design theory and method. His recent research interests include discrete element of mining machinery, optimization design of mining machinery and equipment, digitalization and informatization of mining machinery and equipment, virtual reality design of mining machinery products, etc. Dr. Jiacheng Xie receivedhis B.E. in Mechanical Engineering and Automation from Taiyuan University of Science and Technology, Shanxi, in 2012, the M.E. and Ph.D. degrees in Mechanical Design and Theory from Taiyuan University of Technology, Shanxi, in 2015 and 2018, respectively. Dr. Xie has been in College of Mechanical and Vehicle Engineering, Taiyuan University of Technology working as Associate professor since 2018. His recent research interests include digitalization and informatization of mining machinery and equipment, virtual reality design of mining machinery products.  Suhua Li received her B.E. in Mechanical Design Manufacture and Automation Major from University of Jinan, Shandong, in 2018, the M.E. degrees in Mechanical Design and Theory from Taiyuan University of Technology, in 2021, Shanxi. She has been pursuing the Ph.D degree in Mechanical Design and Theory from Taiyuan University of Technology since 2021, in Shanxi.

• Preface.- Application overview.- Overall design of the system.- Model conversion technology of virtual simulation elements and establishment of model base.- Virtual assembly method based on OSG.- Virtual assembly method based on UG.- Human-computer interaction in virtual assembly.- Networked method of virtual assembly.- Running method and technology of virtual single machine simulation.- Method and technology of virtual collaborative simulation running.- Virtual planning operation technology.- Sensor information construction and virtual reality interaction technology.- Method of condition monitoring and virtual simulation.- Virtual monitoring system.- Conclusion.