公开(公告)号：US20210276456A1

公开(公告)日：2021-09-09

申请号：US17020843

申请日：2020-09-15

Applicant: Southwest Jiaotong University

Inventor： Chenglin XIONG ,  Rong MEI ,  Shuang SONG ,  Zhiwei SONG ,  Lu HUANG

IPC: B60M3/04

Abstract: A virtual co-phase power supply system topology suitable for an electrical sectioning device at a sectioning and paralleling post (SP) includes a step-down transformer TR1. A primary winding of the step-down transformer TR1 is electrically connected to a traction feeding section β2 in a train from a traction feeding section β1 to the traction feeding section β2. Each secondary winding is electrically connected to one rectifier separately. DC buses output from the rectifiers are connected in parallel. The other end of the DC bus is electrically connected to a plurality of parallel inverter units. An LC filter is provided on a DC bus between a rectifier unit and the inverter unit, and the LC filter is connected in parallel to an energy storage unit. After filtering through the LC filter, an output end of the inverter unit is electrically connected to a primary winding of a step-up transformer TR2.

公开(公告)号：US20210214931A1

公开(公告)日：2021-07-15

申请号：US17030396

申请日：2020-09-24

Applicant: Southwest Jiaotong University

Inventor： Zhixiang YU ,  Yuntao JIN ,  Chun LIU ,  Liping GUO ,  Liru LUO ,  Wenjun GAO ,  Hu XU ,  Lei ZHAO ,  Rui GUO

IPC: E04B1/21 ,  E04B1/41 ,  E04C3/34 ,  E04C3/20

Abstract: A dry process connected energy-consuming beam column joint based on a corbel includes a prefabricated concrete corbel column, pre-buried steel plates and connecting steel plates, wherein the corbel section of the prefabricated concrete corbel column is stepped, and a notch section of a prefabricated concrete notch beam is matched with the stepped section of the corbel and is in lap joint to the stepped section; the pre-buried steel plates are separately pre-buried on the upper and lower surfaces of the corbel and the prefabricated concrete notch beam, friction plates are arranged outside the pre-buried steel plates, and slight tooth spaces are arranged on the sides, facing the pre-buried steel plates, of the friction plates; and the connecting steel plates are arranged on the left and right sides of the prefabricated concrete notch beam and the corbel lap joint section.

公开(公告)号：US20210065945A1

公开(公告)日：2021-03-04

申请号：US16708451

申请日：2019-12-10

Applicant: Southwest Jiaotong University

Inventor： Guangtong MA ,  Zhen LUO ,  Xingchao NIE ,  Ruichen WANG

IPC: H01F6/04 ,  H01F6/00 ,  F17C3/08

Abstract: A detachable cryostat includes many novel structures. Two radiation shields are installed in the detachable cryostat. One of the radiation shields is cooled by the second-stage cold chamber utilized to contain a cryogen, and the other one is cooled by the first-stage cold head of the cryocooler. These structures are both used for reducing heat loads from an outside. The resilient supporting device, the resilient circular sleeve, the bellows and the conductive blocks are utilized to achieve excellent thermal contact and complete thermal isolation between the cryocooler and the cryogen. A detachable binary current lead device can be introduced in the detachable cryostat, wherein, the detachable binary current lead includes a superconducting current lead and a copper current lead. When the installation adjustment mechanism is tightly pressed and loosened, it can enable the superconducting current lead to contact and separate from the copper current lead.

公开(公告)号：US10908178B1

公开(公告)日：2021-02-02

申请号：US17008666

申请日：2020-09-01

Applicant: Southwest Jiaotong University

Inventor： Zhixiang Yu ,  Hu Xu ,  Linxu Liao ,  Xin Qi ,  Lei Zhao ,  Shichun Zhao

IPC: G01P15/00 ,  G01P3/00 ,  B33Y80/00 ,  B64C39/02 ,  G01B11/24

Abstract: An arbitrary-shaped fabricated test block for a high-steep slope rolling stone test includes a connecting square barrel and test block bodies. The connecting square barrel is formed by enclosing steel plates, the steel plates are provided with connecting grooves on a periphery of the steel plates, and the connecting grooves are provided with connecting groove bolt holes. The test block bodies are printed on printing bases by 3D printing technology, connecting plates are fixedly arranged on the printing bases, connecting plate bolt holes are formed in the connecting plates, and high-strength bolts penetrate through the connecting groove bolt holes and the connecting plate bolt holes to connect the test block bodies to the connecting square barrel. A sensor box is fixedly arranged on an inner side of the connecting square barrel, and a sensor is arranged in the sensor box.

公开(公告)号：US10850328B1

公开(公告)日：2020-12-01

申请号：US16883234

申请日：2020-05-26

Applicant: Southwest Jiaotong University

Inventor： Guodong Cui ,  Yuxuan Liu ,  Chengsong Zhang ,  Yifei Chen ,  Qin Xu

IPC: B22F3/16 ,  B22F3/105 ,  B22F3/10

Abstract: The disclosure provides a method of making an iron matrix composite. A Fe—Ni—P composite powder having a particle size of one to two micrometers and a Fe—N powder having a particle size of 100 to 250 nanometers are used as the raw material. The size and axial displacement of pressing heads of a graphite mold are controlled to realize the control of the porosity of porous iron. The composite produced comprises two surface layers of a Fe—Ni—P alloy and an intermediate layer of porous iron having a porosity of 14 to 39%. The method enables a reduced weight of the Fe—Ni—P alloy and enables shock absorption and damping properties to be imparted to the composite. In addition, an optional subsequent deep cryogenic treatment allows the Fe—Ni—P alloy to be subjected to phase transition from a metastable gamma-phase to an alpha-phase, thereby substantially improving the hardness and strength thereof.

公开(公告)号：US20200339366A1

公开(公告)日：2020-10-29

申请号：US16740472

申请日：2020-01-12

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Zeqiang ZHANG ,  Mengke XIE ,  Jin JIANG ,  Yunpeng LI ,  Junqi LIU ,  Shasha WANG ,  Wenming CHENG

IPC: B65G65/23

Abstract: A discharging device for a vinasse tank, including a flipping component and a lifting component. The flipping component includes convex rods externally connected with opposite side surfaces of the tank, and a frame matched with the tank; the frame includes an outer frame and an inner frame; opposite inner supporting rods of the inner frame are provided with C-shaped grooves having openings downward and matched with the convex rods; respective C-shaped grooves include a through hole penetrating through lower parts of groove walls on both sides; a gear lever matched with the through hole and a first driving mechanism for driving the gear lever to move left and right axially along the through hole are arranged in the inner supporting rod; and a second driving mechanism for driving the inner frame to flip is arranged at a joint between the inner supporting rod and an outer supporting rod.

公开(公告)号：US20200007261A1

公开(公告)日：2020-01-02

申请号：US16482247

申请日：2017-12-18

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Xihua ZOU ,  Peixuan LI ,  Wei PAN

IPC: H04J14/02 ,  H04B10/2575 ,  H04B10/50 ,  H04B7/06

Abstract: A radio-over-fiber communication beamforming device based on arrayed waveguide grating and a method thereof. The radio frequency signal is modulated onto a plurality of optical carriers of different wavelengths and processed by a programmable photonic true-time delay module in the optical domain. The programmable photonic true-time delay module includes optical switches and a plurality of cascaded AWGs which can provide different basic delays between adjacent wavelength channels. The basic delays of different stages of the AWG present a geometric sequence with a common ratio of 2. Optical carriers of different wavelengths enter different branches and undergo photoelectric conversion to obtain the radio frequency signals of different delays (phases) to realize a far-field beam directional radiation pattern.

公开(公告)号：US20190204353A1

公开(公告)日：2019-07-04

申请号：US16290981

申请日：2019-03-04

Applicant: Southwest Jiaotong University

Inventor： Linmao QIAN ,  Liang JIANG ,  Bin LIN ,  Jianbin LUO

IPC: G01Q70/16

CPC classification number: G01Q70/16 ,  G01N19/02 ,  G01Q60/26 ,  G01Q70/10

Abstract: A method for designing and processing a microcantilever-based probe with an irregular cross section applied in the ultra-low friction coefficient measurement at a nanoscale single-point contact includes: first, establishing a universal theoretical model of the friction coefficient measurement; then, combined with the structural features of the microcantilever-based probe with the irregular cross section, establishing a specific theoretical model of the friction coefficient measurement suitable for the microcantilever-based probe with the irregular cross section; and based on above, combined with constraint conditions such as the friction coefficient resolution, the loadable maximum positive pressure or the measurable minimum friction force, and the atomic force microscope characteristics, etc., designing the microcantilever-based probe with the irregular cross section meeting the measurement requirements.

公开(公告)号：US09812252B2

公开(公告)日：2017-11-07

申请号：US15125531

申请日：2015-04-20

Applicant: CHINA RAILWAY CORPORATION ,  SOUTHWEST JIAOTONG UNIVERSITY ,  CHANG-ZHOU PACIFIC ELECTRIC POWER EQUIPMENT GROUP CO., LTD.

Inventor： Shibin Gao ,  Baoguo Wang ,  Zhiqiang Wu ,  Mindong Gao

IPC: H01F27/24 ,  H01F30/12 ,  H01F21/12 ,  H01F21/02 ,  H01F37/00 ,  H01F29/00 ,  H01F17/02 ,  H01F27/08 ,  H01F27/29

CPC classification number: H01F37/005 ,  H01F17/02 ,  H01F27/08 ,  H01F27/29 ,  H01F29/00

Abstract: A rolled iron core traction transformer, comprising an iron core (1); the iron core (1) is formed by splicing two symmetrical annealed iron-core closed single frames (1-1); each iron-core closed single frame (1-1) is formed by sequentially coiling continuous silicon steel sheets; the iron-core closed single frame (1-1) has two iron core column single bodies (1-1-1) having approximately semicircular cross sections; the iron core (1) has two iron core columns (1-2) thereon spliced by the iron core column single bodies (1-1-1) and having approximately circular cross sections; each iron core column (1-2) is sequentially provided with a low-voltage T winding (6), a low-voltage F winding (5) and a high-voltage winding (4) thereon from inside to outside; two sides of each high-voltage winding (4) are respectively provided with a first tapping area and a second tapping area; the first tapping area is provided with low-voltage side high-voltage tapping outgoing lines (16); the second lapping area is provided with high-voltage side high-voltage tapping outgoing lines (18); two low-voltage side high-voltage tapping outgoing lines (16) are connected together via a no-load voltage regulation switch (9); and two high-voltage side high-voltage tapping outgoing lines (18) are connected together via another no-load voltage regulation switch (9). The transformer reduces no-load loss, has a small no-load current, low noise and strong anti-short circuit capability, reduces the electrodynamic force generated by a sudden short circuit, and improves the short circuit tolerance capability of the transformer.

公开(公告)号：US12297054B1

公开(公告)日：2025-05-13

申请号：US19001493

申请日：2024-12-25

Applicant: Southwest Jiaotong University

Inventor： Zeqiang Zhang ,  Haojie Ma ,  Silu Liu ,  Tong Tian ,  Minjie Zhao ,  Jie Li ,  Lei Guo ,  Yan Li ,  Haolin Song ,  Xingkang Wang

IPC: B65G47/82

Abstract: Disclosed is an intermittent moving mechanism, which belongs to the technical field of conveying devices and includes a guide rail; a sliding block moving along the guide rail, two stop blocks arranged at intervals, wherein a distance between the two stop blocks is greater than a length of the sliding block along an extension direction of the guide rail, and the sliding block is positioned between the two stop blocks; and a reciprocating movement structure, configured to push the two stop blocks to move synchronously and reciprocally along an extension direction of the guide rail. The reciprocating moving structure in the intermittent mechanism continuously operates, which avoids repeated starting and stopping and speed changes of the prime mover, and is beneficial to reducing the operation energy consumption and reducing the noise pollution to the environment.