公开(公告)号：US10830044B1

公开(公告)日：2020-11-10

申请号：US16632375

申请日：2019-06-18

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY ,  XUZHOU GOLDFLUID HYDRAULIC TECHNOLOGY DEVELOPMENT CO., LTD.

Inventor： Chao Tan ,  Zhongbin Wang ,  Hongya Zhou ,  Lei Si ,  Xinhua Liu ,  Xuliang Lu ,  Xiaoyu Li ,  Bowen Liu ,  Yue Wu ,  Honglin Wu

IPC: E21D23/12 ,  H04L12/40 ,  E21D23/14

Abstract: A system and method for remotely locating a communication error support for hydraulic supports. The system includes a control panel, a support controller, a data converter, and two support drivers of the same type. Each support driver has two bus interfaces. The control panel transmits a control command to the data converter in a form of a WiFi signal. The data converter converts the WiFi signal into a message signal and transmits the message signal to the support controller. The support controller transmits the control command to the two support drivers, respectively. The support drivers transmit the command through CANH twisted pairs and CANL twisted pairs. When a bus for transmitting the command of a certain node has an error, the support controller calculates the fault node according to a formula n = p ⁢ t 8 ⁢ m , and feeds back the fault node onto the control panel.

公开(公告)号：US20250091291A1

公开(公告)日：2025-03-20

申请号：US18799945

申请日：2024-08-09

Applicant: China University of Mining and Technology

Inventor： Jingbin Hao ,  Xuanyu Zheng ,  Haifeng Yang ,  Hao Liu ,  Qin Du ,  Jianhua Hu ,  Ding Shen ,  Xinhua Liu

IPC: B29C64/218 ,  B29C64/153 ,  B29C64/214 ,  B29C64/321 ,  B33Y10/00 ,  B33Y30/00

Abstract: An integrated device of bi-directional ultrasonic rolling, powder spreading, and compaction for additive manufacturing is provided, including an integrated device of ultrasonic rolling and powder spreading, and a platform lifting device. The integrated device of ultrasonic rolling and powder spreading is located above the platform lifting device. It can achieve ultrasonic rolling composite additive manufacturing, synchronously carry out ultrasonic rolling strengthening during selective laser melting process, improve the performance of manufacturing components, and the integrated device of ultrasonic rolling and powder spreading can achieve bi-directional strengthening, powder spreading and compaction. The feeding device is used to spread the powder from above, and the reflux gas in the gas reflux channel can reduce the falling speed of particles with higher density in the composite material powder, enabling them to fall synchronously with small particles, reducing the phenomenon of composite material powder delamination caused by differences in particle density.