公开(公告)号：US20220026293A1

公开(公告)日：2022-01-27

申请号：US17377200

申请日：2021-07-15

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Shuangyi Li ,  Yuren Lu ,  Peng Yin ,  Dezhi Li ,  Wenyuan Song

IPC: G01L1/25 ,  G01N29/07

Abstract: A device and a method for ultrasonic detecting a rotating member based on magnetic fluid coupling, wherein the device comprises an ultrasonic probe, magnetic field protection rings, magnetic fluid and a magnetic fluid protection cover. The ultrasonic probe is arranged above the rotating member that is horizontally placed. Front ends of a transmitting ultrasonic transducer and a receiving ultrasonic transducer of the ultrasonic probe are provided with the magnetic field protection rings for generating magnetic fields in the magnetic field protection rings. The protective cover is sleeved on a circumferential outer side of the rotating member where a detected position is located, and the front ends of the ultrasonic probe are arranged to penetrate through the magnetic fluid protective cover. A cavity formed between the magnetic fluid protective cover and the rotating member is filled with the magnetic fluid and the magnetic fluid is a liquid mixture solution.

公开(公告)号：US20220025500A1

公开(公告)日：2022-01-27

申请号：US17380090

申请日：2021-07-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Wenyuan Song ,  Peilu Li ,  Peng Yin ,  Yuren Lu ,  Shuangyi Li

IPC: C22F3/00 ,  B06B1/02

Abstract: A device for reducing and homogenizing residual stress of a metal frame including a substrate, a frame fixing device and ultrasonic vibrators. A groove with an upward opening is provided in the middle of the substrate, and a shape enclosed by vertical side walls of the groove matches a shape of an outer frame of a metal frame to be processed. A plurality of through holes that are horizontally diverged are arranged around the side walls of the groove, and the through holes are vertically intersected with the groove. The ultrasonic vibrators are provided on the substrate and front ends of the ultrasonic vibrators extend into respective through holes to abut against the metal frame in the groove. The frame fixing device is also arranged in the groove where the metal frame is located, after the metal frame to be processed is placed in the groove.

公开(公告)号：US11180863B2

公开(公告)日：2021-11-23

申请号：US16612739

申请日：2019-03-27

Applicant: University of Science and Technology Beijing ,  Beijing Institute of Technology

Inventor： Shuqiang Jiao ,  Zhe Wang ,  Handong Jiao

IPC: C25C3/26 ,  C25C3/28 ,  C25C7/00 ,  C25C7/02

Abstract: A device and a method for preparing pure titanium by electrolysis-chlorination-electrolysis, wherein the device includes a first electrolytic cell, a second electrolytic cell, a chlorination reactor and guide tubes. The Cl2 generated at the anode of the first electrolytic cell is introduced into a chlorination reactor containing the TiCxOy or TiCxOyNz raw materials via a guide tube, and a chlorination is carried out to generate TiCl4 gas at a temperature of 200° C.-600° C. The TiCl4 gas passes through a guide tube into a cathode of the second electrolytic cell, and then an electrolysis is performed to obtain the high-purity titanium in the second electrolytic cell. At the same time, the Cl2 generated at the anode of the second electrolytic cell is recycled into the chlorination reactor in the first electrolytic cell to continue to participate in the chlorination of TiCxOy or TiCxOyNz.

公开(公告)号：US20210323161A1

公开(公告)日：2021-10-21

申请号：US17051072

申请日：2019-07-16

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Canzhi Guo ,  Juan Hao ,  Wanxin Yang ,  Xianchun Xu ,  Ruili Jia ,  Xinhao Zheng

IPC: B25J9/16 ,  G01N29/04 ,  G01N29/265 ,  B25J9/00

Abstract: An ultrasonic testing system of dual robot arms and an ultrasonic testing method for use in testing quality of surface and interior of a workpiece. The system includes an extension rod provided between a tail-end of a master robot arm and an emitting probe and/or between a tail-end of a slave robot arm and a receiving probe. One or more connected extension rod rotating shafts is provided between the extension rod and the emitting probe or between the extension rod and the receiving probe. The method uses an X-axis constraint method to convert posture data of the discrete points in a trajectory file of the tested workpiece into Euler angles, and constrain the X-axes of the auxiliary coordinate systems at the same time so that the positive direction of the X-axis of each of the auxiliary coordinate systems is the trajectory tangent direction.

公开(公告)号：US11091693B2

公开(公告)日：2021-08-17

申请号：US16419869

申请日：2019-05-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Haizheng Zhong ,  Lige Liu

IPC: C09K11/66 ,  B82Y20/00 ,  C09K11/02 ,  C07F1/08 ,  C07F7/22 ,  C07F7/24 ,  C07F7/30 ,  C07F13/00 ,  C09K11/06 ,  G02F1/13357 ,  B82Y40/00 ,  B82Y30/00 ,  G02F1/1335 ,  C09K11/57 ,  C09K11/58 ,  C09K11/74

Abstract: The present application discloses a method of preparing a luminescent nano-sheet. The method includes preparing a precursor emulsion solution containing a metal halide and RNH3X, and having a molar ratio of metal halide to RNH3X in a range of approximately 0.6 to approximately 0.8; demulsifying the precursor emulsion solution to obtain a perovskite quantum dots material and a demulsified solution; and forming the luminescent nano-sheet by allowing the perovskite quantum dots material self-assemble into the luminescent nano-sheet. X is a halide, R is selected from alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, cycloalkynyl, aryl, heteroaryl, and heterocyclyl.

公开(公告)号：US20210033566A1

公开(公告)日：2021-02-04

申请号：US16910993

申请日：2020-06-24

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Canzhi Guo ,  Juan Hao ,  Wanxin Yang ,  Xianchun Xu ,  Xinhao Zheng

IPC: G01N29/28 ,  G01N29/04

Abstract: An ultrasonic testing device that can make a robotic testing system reach the surface of a complex curved composite workpiece that is not easy to reach and perform a quality testing. By pumping a coupling liquid into the device so that the coupling liquid enters a waveguide and jets onto the surface of the workpiece, an ultrasonic wave can be transmitted in the waveguide and reach the surface of the workpiece and penetrate the workpiece, thereby achieving the purpose of quality testing of the workpiece. By providing two ultrasonic testing devices without a waveguide on both sides of a tested workpiece, respectively, and by mounting the waveguide on one side or both sides of the ultrasonic testing devices, it is possible to transmit the ultrasonic waves to the surface of the workpiece or to receive the ultrasonic waves from the surface of the workpiece.

公开(公告)号：US20210008734A1

公开(公告)日：2021-01-14

申请号：US16856010

申请日：2020-04-22

Applicant: Beijing Institute of Technology

Inventor： Qiang HUANG ,  Junyao GAO ,  Chunlei ZHANG ,  Weimin ZHANG ,  Xuechao CHEN ,  Dingkui TIAN

IPC: B25J17/00

Abstract: The present disclosure provides a waist joint of humanoid robot and a humanoid robot. The waist joint comprise: tile-shaped structural members, connection members, and substrates. The first end of the first connection member is slidably connected with the first end of the first tile-shaped structural member, and the first end of the second connection member is slidably connected with the second end of the first tile-shaped structural member; one side surface of the first substrate is slidably connected with the first end of the second tile-shaped structural member, and one side surface of the second substrate is slidably connected with the second end of the second tile-shaped structural member; the second end of the first connection member is connected with the third end of the second tile-shaped structural member, and the second end of the second connection member is connected with the fourth end of the second tile-shaped structural member.

公开(公告)号：US20210008713A1

公开(公告)日：2021-01-14

申请号：US16848634

申请日：2020-04-14

Applicant: Beijing Institute of Technology

Inventor： Qiang HUANG ,  Chunlei ZHANG ,  Junyao GAO ,  Zhangguo YU ,  Huaxin LIU

IPC: B25J9/10 ,  B25J9/00 ,  B25J9/12 ,  B25J15/00

Abstract: The present disclosure provides a joint support structure of a robot and a robot having the same. The joint support structure comprises: a drive motor; a reducing transmission mechanism; a motor side casing; a transmission side casing; and a knee joint sleeve disposed on outer peripheries of the motor side casing and of the transmission side casing and connected to the reducing transmission mechanism; the motor side casing has a first annular groove; the transmission side casing has a second annular groove; the knee joint sleeve is provided with an annular connector circumferentially surrounding the motor side casing, and the annular connector has a third annular groove matched with the first annular groove to form a first ball track for accommodating first balls; the knee joint sleeve has a fourth annular groove is matched with the second annular groove to form a second ball track.

公开(公告)号：US20200370143A1

公开(公告)日：2020-11-26

申请号：US16878892

申请日：2020-05-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Dezhi Li ,  Yuren Lu ,  Peng Yin

IPC: C21D10/00

Abstract: The present disclosure provides a device and a method for reducing and homogenizing residual stress during machining in which a workpiece is fixed, such as milling, boring, drilling and planning, with which high-energy acoustic waves are emitted to the workpiece via a tight contact between a plurality of high-energy wave exciters on a bench and a workpiece coated with a coupling medium, and residual stress inside the machined workpiece is reduced and homogenized through elastic wave energy generated in the workpiece by the high-energy acoustic waves. In this way, the purpose of reducing and homogenizing the residual stress while machining is achieved, realizing a stress-free machining, and the deformation of the workpiece during and after machining is minimized.

公开(公告)号：US10719052B2

公开(公告)日：2020-07-21

申请号：US15822107

申请日：2017-11-24

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Juan Liu ,  Xinhui Duan

IPC: G03H1/22 ,  G02B27/42 ,  G02B30/27

Abstract: The present invention relates to a large-size bionic holographic three-dimensional dynamic display method with large field of view. The method includes: a computer generated hologram (CGH) is loaded on a spatial light modulator; a large field angle is formed by changing the optical path through a microlens array or a diffractive optical element having same optical property with the microlens array disposed on a light-emitting surface of pixel structure of the spatial light modulator. Each microlens of the microlens array has one-to-one correspondence with each pixel of the pixel structure of the spatial light modulator. The cost is saved and design of the system structure is simplified while field view of the three-dimensional holographic display is expanded and large size is reappeared. The pixels in the spatial light modulator are fully utilized to avoid loss of resolution, and the display precision is provided to meet the growing demand of people.