公开(公告)号：US12221384B2

公开(公告)日：2025-02-11

申请号：US17943596

申请日：2022-09-13

Applicant: SHANDONG UNIVERSITY ,  YANSHAN UNIVERSITY

Inventor： Chuanzhen Huang ,  Xinyao Cui ,  Hanlian Liu ,  Zhenyu Shi ,  Peng Yao ,  Xiaolan Bai ,  Zhen Wang ,  Longhua Xu ,  Dun Liu ,  Shuiquan Huang ,  Hongtao Zhu ,  Bin Zou

IPC: C04B35/58 ,  B26D1/00 ,  C04B35/626 ,  C04B35/645

Abstract: A crack self-healing functionally gradient material for ceramic cutting tools and a preparation method thereof. The material for ceramic cutting tools has a symmetrical gradient structure, and based on the percentage by mass, components of each layer include 50%-80% of Ti(C7,N3), 25%-5% of (W7,Ti3)C and 20%-0% of TiSi2; contents of components of layers that are symmetrical relative to a central layer are the same and a thickness is symmetrically distributed; a content of Ti(C7,N3) gradually increases from the surface layer to the central layer, contents of (W7,Ti3)C and TiSi2 gradually decrease by 5% from the surface layer to the central layer, and the contents of Ni and Mo gradually increase from the surface layer to the central layer.

公开(公告)号：US20250002660A1

公开(公告)日：2025-01-02

申请号：US18692195

申请日：2022-01-11

Applicant: SHANDONG UNIVERSITY ,  YANSHAN UNIVERSITY

Inventor： Chuanzhen HUANG ,  Zhichao WANG ,  Hanlian LIU ,  Peng YAO ,  Wei WANG ,  Zhen WANG ,  Longhua XU ,  Shuiquan HUANG ,  Jun WANG ,  Hongtao ZHU ,  Bin ZOU

IPC: C08J3/075 ,  B33Y80/00 ,  C08J3/28 ,  C08J9/26 ,  C08J9/28 ,  C12N5/00

Abstract: A method for prepring a porous aerogel scaffold includes: adding a photoinitiator and polyethylene glycol diacrylate in a buffer solution, dissolving by heating and evenly mixing, adding Pluronic F127 into the mixed solution, and standing at a low temperature to obtain an aerogel scaffold material; printing a hydrogel scaffold by using a 3D printing technology, and performing UV irradiation so that a cross-linking of the hydrogel scaffold is caused to form a three-dimensional scaffold with a stable structure, performing low-temperature soaking to remove Pluronic F127, and then freeze drying the three-dimensional scaffold to obtain the porous aerogel scaffold. Wherein, Pluronic F127 serves as a sacrificial material which is removed after the 3D printing of the hydrogel scaffold is completed, and then a porous structure can be formed in the scaffold in combination with a freeze drying technology, which facilitates the survival, growth and proliferation of cells during the three-dimensional culture.

公开(公告)号：US11969899B2

公开(公告)日：2024-04-30

申请号：US17198844

申请日：2021-03-11

Applicant: Yanshan University

Inventor： Kaixian Ba ,  Yanhe Song ,  Huashun Li ,  Bin Yu ,  Guoliang Ma ,  Yuan Wang ,  Xiangdong Kong

IPC: B25J9/16

CPC classification number: B25J9/1669 ,  B25J9/1605 ,  B25J9/1633

Abstract: The present disclosure relates to a method for generating a novel impedance configuration for a three-degree-of-freedom (3DOF) leg of a hydraulically-driven legged robot. The method includes: separately determining variations of input signals of an inner position-based control loop and an inner force-based control loop of a hydraulic drive unit of each joint based on an obtained mathematical model; generating a novel impedance configuration in which position-based control is performed on a hydraulic drive unit of a hip joint, and force-based control is performed on hydraulic drive units of a knee joint and an ankle joint in a hydraulic drive system of the leg of a to-be-controlled robot; and performing forward calculation by using the leg mathematical model, to obtain an actual position and a force variation of the foot of the leg of the to-be-controlled robot to control motion of the foot of the to-be-controlled robot within motion space.

公开(公告)号：US20240108784A1

公开(公告)日：2024-04-04

申请号：US18081964

申请日：2022-12-15

Applicant: SHANDONG UNIVERSITY ,  YANSHAN UNIVERSITY

Inventor： Chuanzhen HUANG ,  Zhuang CHEN ,  Hanlian LIU ,  Peng YAO ,  Zhenyu SHI ,  Dun LIU ,  Hongtao ZHU ,  Bin ZOU ,  Zhen WANG ,  Minting WANG ,  Longhua XU ,  Shuiquan HUANG ,  Meina QU ,  Zhengkai XU ,  Yabin GUAN

IPC: A61L26/00 ,  B29C64/118 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

CPC classification number: A61L26/008 ,  A61L26/0052 ,  B29C64/118 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29K2005/00 ,  B29L2031/753

Abstract: A hydrogel for cell-laden bioprinting, bioink, and a preparation method and an application thereof, relates to the technical field of biomedical polymer hydrogels. The hydrogel for cell-laden bioprinting is polymer gel formed by adding a cell-specific material into a matrix of alginate and gelatin and crosslinking and curing, wherein the cell-specific material is polypeptide selected according to different laden cells. The structures printed using the hydrogel may have the advantages such as adjustable mechanical properties, adjustable porosity, high biocompatibility, high printing accuracy, and high customizability, which may widely support the printing of human tissues and organs such as spinal cord, cartilage, and heart, and has good prospects for applications in tissue repair, organ transplantation and so on.

公开(公告)号：US20230405874A1

公开(公告)日：2023-12-21

申请号：US17941726

申请日：2022-09-09

Applicant: SHANDONG UNIVERSITY ,  YANSHAN UNIVERSITY

Inventor： Chuanzhen HUANG ,  Xuefei LIU ,  Hanlian LIU ,  Peng YAO ,  Hongtao ZHU ,  Bin ZOU ,  Dun LIU ,  Jun WANG ,  Zhen WANG ,  Longhua XU ,  Shuiquan HUANG

IPC: B28D5/04 ,  G02B1/118 ,  G02B1/113 ,  B23K26/0622

CPC classification number: B28D5/04 ,  G02B1/118 ,  G02B1/113 ,  B23K26/0624 ,  B23K2103/56

Abstract: A monocrystalline silicon micro-nano dual-scale anti-reflection texture and a preparation method therefor. The preparation method combines nanosecond-laser-assisted waterjet near-damage-free processing and femtosecond laser scanning, and subsurface damage caused by a re-cast layer phenomenon and a hot crack in a monocrystalline silicon laser texturing process can be effectively reduced by combining a nanosecond-laser-assisted waterjet near-damage-free processing technology and an ultra-short pulse femtosecond laser cold processing technology; and meanwhile, a micro-scale frame structure and a nano-scale structure can be flexibly modified respectively by adjusting nanosecond-laser-assisted waterjet technological parameters and femtosecond laser technological parameters, a geometry light trapping effect and an effective dielectric effect can be achieved in a micro-nano dual-scale hybrid structure at the same time, and surface reflection is reduced.

公开(公告)号：US11813709B2

公开(公告)日：2023-11-14

申请号：US17190531

申请日：2021-03-03

Applicant: Yanshan University

Inventor： Ziming Chen ,  Kun Zhao ,  Wenjiang Yan ,  Xuechan Chen ,  Chen Zhao ,  Zongguo Xu ,  Haijiao Jia ,  Zixuan Liu

IPC: B23C1/12 ,  B23Q1/54

CPC classification number: B23Q1/5462 ,  B23C1/12 ,  Y10T409/308512 ,  Y10T409/309576

Abstract: A symmetrical tri-axial parallel spindle head capable of multi-directional fixed-point rotation, comprising three branch chains (2), a moving base (5), and a fixed base (1). A machining spindle (6) is fixedly connected onto the moving base (5). Each of the branch chains (2) comprises a servo motor (22), a branch chain rod (21), a lead screw (23), and a guide nut (25). The lead screw (23) and a linear guide rail (24) are provided in an inner cavity on one end of the branch chain rod (21). One end of the lead screw (23) is connected to the servo motor (22), the lead screw (23) passes through the guide nut (25), and the other end of the lead screw (22) is connected to the branch chain rod (21) by means a rotating pair. The guide nut (25) is mounted on the linear guide rail (24) and is rotatably connected to the fixed base (1) through a first support disc (26). The other end of the branch chain rod (21) is rotatably connected to the moving base (5) through a second support disc (28). The symmetrical three-axial parallel spindle head not only can enable the tool to achieve multi-directional fixed-point rotation around any point within a certain range of the internal space of the moving and fixed platforms merely by the parallel spindle head structure itself, but also can achieve multi-directional fixed-point rotation around the tool tip point; and the spindle head structure is symmetrical, and the motion characteristic is also symmetrical.

公开(公告)号：US11759892B2

公开(公告)日：2023-09-19

申请号：US16952318

申请日：2020-11-19

Applicant: Yanshan University

Inventor： Jianfeng Song ,  Wenwu Wang ,  Younian Song ,  Yinggang Shi ,  Dong Wang ,  Xuan He

IPC: B23K26/342 ,  B33Y30/00 ,  B23K26/08 ,  B23K103/04 ,  B23K101/04

CPC classification number: B23K26/342 ,  B23K26/0876 ,  B33Y30/00 ,  B23K2101/04 ,  B23K2103/04

Abstract: A wall-thickness additive manufacturing device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, includes: a vertical wall, a heat-insulating cover, a crossed slide assembly and a laser cladding assembly. The vertical wall is horizontally provided on the ground; the crossed slide assembly is fixedly connected to the vertical wall; the laser cladding assembly is fixedly connected to the crossed slide assembly; the vertical wall has a shape of a T-shaped structure. The present invention uses laser welding to solve the problem of heat preservation of the processed workpiece in the process of wall-thickness forming and additive manufacturing.

公开(公告)号：US11708268B2

公开(公告)日：2023-07-25

申请号：US17039194

申请日：2020-09-30

Applicant: YANSHAN UNIVERSITY

Inventor： Zhisheng Zhao ,  Kun Luo ,  Lei Sun ,  Bing Liu ,  Wentao Hu ,  Julong He ,  Dongli Yu ,  Yongjun Tian ,  Bo Xu ,  Zhongyuan Liu

IPC: C01B21/064

CPC classification number: C01B21/0648 ,  C01P2002/01 ,  C01P2002/76 ,  C01P2002/77

Abstract: The present disclosure relates to a novel sp2-sp3 hybrid crystalline boron nitride and its preparation process. A novel sp2-sp3 hybrid crystalline boron nitride allotrope, named Gradia BN, is synthesized using sp2 or sp3 hybridized boron nitride as raw materials under high-temperature and high-pressure. The basic structural units of Gradia BN are composed of sp2 hybridized graphite-like structural units and sp3 hybridized diamond-like structural units. Gradia BN disclosed in the present disclosure is a class of new sp2-sp3 hybrid boron nitride allotrope, whose crystal structure can vary with the widths and/or crystallographic orientation relationships of internal sp2 and/or sp3 structural units, and may have variable physical properties.

公开(公告)号：US20230219856A1

公开(公告)日：2023-07-13

申请号：US17706045

申请日：2022-03-28

Applicant: SHANDONG UNIVERSITY ,  YANSHAN UNIVERSITY

Inventor： Chuanzhen HUANG ,  Yan ZHANG ,  Hanlian LIU ,  Zhenyu SHI ,  Peng YAO ,  Zhen WANG ,  Longhua XU ,  Shuiquan HUANG ,  Jun WANG ,  Hongtao ZHU ,  Bin ZOU

IPC: C04B35/58 ,  C04B35/626 ,  C04B35/645 ,  B23B27/14

CPC classification number: C04B35/58 ,  C04B35/6261 ,  C04B35/6264 ,  C04B35/645 ,  B23B27/148 ,  C04B2235/3856 ,  C04B2235/3886 ,  C04B2235/404 ,  C04B2235/405 ,  C04B2235/6581 ,  C04B2235/6562 ,  C04B2235/6567 ,  B23B2226/18

Abstract: The present invention relates to the field of new materials technology, in particular to carbon nitride composite ceramic tool materials, preparation method and cutting tools thereof. The raw materials comprise carbon nitride, titanium carbonitride, molybdenum, nickel and cobalt, carbon nitride as the matrix phase, titanium carbonitride as the reinforcing phase are added to the carbon nitride based composite ceramic materials, with molybdenum, nickel and cobalt as a suitable sintering aid, dense composite tool material is obtained with vacuum hot press sintering method. The prepared carbon nitride based composite ceramic tool materials boast the advantages of low cost, high hardness, high bending strength and high fracture toughness, which is an important way to promote the innovation, development and popularization of carbon nitride materials.

公开(公告)号：US11628896B2

公开(公告)日：2023-04-18

申请号：US17104048

申请日：2020-11-25

Applicant: Yanshan University

Inventor： Ziming Chen ,  Xuechan Chen ,  Kun Zhao ,  Chen Zhao ,  Wenjiang Yan ,  Nan Li ,  An Yin ,  Yu Guo ,  Jingke Song

IPC: B62D57/02 ,  B25J5/00 ,  B25J19/00

Abstract: The invention relates to a composite motion robot based on springtail movement mechanism, which includes a body, a jumping mechanism, a balance wheel and a control module. The body includes a right pallet, a U-shaped frame, a curved slide, a casing, a fixing plate, a left pallet and a pin block; the control module is installed on the body. Based on springtail jumping motion mechanism and by setting the jumping mechanism and the balance wheel, the invention enables the robot to have capability of movement, such as jumping over obstacles, balance wheeled translation, flipping posture reset, and self-balance resetting which is otherwise difficult to be achieved by traditional balancing carts, etc.