公开(公告)号：US09291055B2

公开(公告)日：2016-03-22

申请号：US14516684

申请日：2014-10-17

Applicant: Korea Railroad Research Institute

Inventor： Dong Hyeon Kim

IPC: E21D9/14 ,  B61B13/10 ,  E21F1/00

CPC classification number: E21F1/003 ,  B61B13/10 ,  E21D9/14

Abstract: A structure for reducing a tunnel micro pressure wave is provided. The structure includes a hood structure formed in front of an entry of a railroad tunnel; and an air pipe section in which at least one air pipe is provided along the circumference of the hood structure, wherein the air pipe comprises a horizontal introduction section formed to be extended from an internal side of the hood structure toward a longitudinal direction of the hood structure, an outlet section formed on an external side of the hood structure, and an intermediate section connecting the horizontal introduction section and the outlet section through each other.

Abstract translation: 提供了一种用于减小隧道微压力波的结构。 该结构包括形成在铁路隧道入口前面的罩结构; 以及空气管部，其中沿着所述罩结构的圆周设置有至少一个空气管，其中所述空气管包括水平导入部，所述水平导入部形成为从所述罩结构的内侧朝向所述罩的纵向延伸 结构，形成在发动机罩结构的外侧的出口部以及将水平引入部和出口部彼此连接的中间部。

公开(公告)号：US20150222188A1

公开(公告)日：2015-08-06

申请号：US14579959

申请日：2014-12-22

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Jeong Min JO ,  Young Jae HAN ,  Chang Young LEE ,  Hyun Seung JEONG ,  Sung Il SEO

IPC: H02M3/335 ,  H01F27/40 ,  H01F27/34 ,  H01F27/28

CPC classification number: H02M3/335 ,  H01F27/2823 ,  H01F27/346 ,  H01F27/40 ,  H01F30/10 ,  H01F2027/408

Abstract: Disclosed is a high frequency transformer for reducing leakage flux, including a voltage transformation unit for transforming a first voltage, which is inputted thereto, into a second voltage, wherein: a primary winding is divided; and a secondary winding is arranged between the divided primary windings.

Abstract translation: 公开了一种用于减小漏磁通的高频变压器，包括用于将输入到其中的第一电压变换为第二电压的电压变换单元，其中：分压初级绕组; 并且在分开的初级绕组之间布置有次级绕组。

公开(公告)号：US20250116071A1

公开(公告)日：2025-04-10

申请号：US18908833

申请日：2024-10-08

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Seong-Hyeok LEE ,  Young Hoon Bae ,  Hyun Ki Kim ,  Chan Yong Choi

IPC: E01B1/00 ,  E01B27/02

Abstract: Disclosed are a prefabricated wire mesh assembly for a ballast and a method of constructing a gravel-ballasted track using the same. When a gravel ballast is used by filling a box-shaped rebar mesh with crushed stones and injecting a filling material, the prefabricated wire mesh assembly increases injection efficiency by further installing an internal partition wall to effectively support loads without forming a separate ballast shoulder and injecting a filling material through injection pipes installed on an internal partition wall, and prevents water accumulation on a roadbed by a drainage pipe. The prefabricated wire mesh assembly for a ballast is assembled by installing the injection pipe along with the lower mesh and the internal partition wall, thereby allowing the filling material to be injected without installation of a plurality of separate injection pipes, and securing construction quality by increasing injection efficiency of the filling material through the installed injection pipes.

公开(公告)号：US20250026386A1

公开(公告)日：2025-01-23

申请号：US18776296

申请日：2024-07-18

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Hyun Moo HUR ,  Kyung Ho MOON ,  Seong Kwang HONG ,  Young Sam HAM

IPC: B61L15/00 ,  G01H17/00

Abstract: Provided are a system and method for diagnosing operational safety of railcars in which one or more vibration sensors installed in each car of a train measure and analyze vibrations generated from the running car, running information including the travel location and travel speed of the car is added to vibration data and transmitted to a central control system, integrated running information is analyzed through pretrained artificial intelligence (AI) to estimate an abnormal part of the cars or railroad, and the AI is retrained through big data analysis.

公开(公告)号：US20240369442A1

公开(公告)日：2024-11-07

申请号：US18291390

申请日：2021-11-02

Applicant: KOREA RAILROAD RESEARCH INSTITUTE (KRRI)

Inventor： Woo Tae JEONG

IPC: G01M5/00 ,  B61K9/02

Abstract: A rail management device includes a measurement unit configured to measure upper and lateral profiles of the head portion, and a securing unit fixed to the rail and configured to support and fix the measurement unit, in which the securing unit includes a body connected to the measurement unit, an elastic clamp provided at a lower side of the body and provided to be in close contact with an upper surface of the head portion, an invariable clamp provided at one side of the body and provided to be in close contact with one side lower surface of the head portion, and a variable clamp provided at the other side of the body and provided to be in close contact with the other side lower surface of the head portion.

公开(公告)号：US20230374736A1

公开(公告)日：2023-11-23

申请号：US17983399

申请日：2022-11-09

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Dae Sang Kim ,  Ungjin Kim

IPC: E01B3/36 ,  B32B25/10 ,  B32B5/02 ,  B32B3/08 ,  B32B25/14 ,  B32B37/20 ,  B32B7/12 ,  B32B37/12 ,  B32B38/00 ,  E01B19/00

CPC classification number: E01B3/36 ,  B32B25/10 ,  B32B5/022 ,  B32B3/08 ,  B32B25/14 ,  B32B37/203 ,  B32B7/12 ,  B32B37/12 ,  B32B38/0004 ,  E01B19/003 ,  B32B2260/021 ,  B32B2260/044 ,  B32B2305/20 ,  B32B2319/00 ,  B32B2250/40 ,  B32B2250/03 ,  E01B2204/01

Abstract: The present disclosure provides, as a sleeper pad for railroad sleepers in which a nonwoven fabric is attached to a rubber pad by a thermal fusion process, a nonwoven fabric-integrated sleeper pad using a rubber pad embedded with a stiffener and methods of manufacturing and constructing the same, which can adjust vertical support stiffness of the rubber pad by the stiffener embedded in the middle of the rubber pad and which can secure the flatness of the rubber pad by resisting bending deformation due to a difference in shrinkage between rubber and nonwoven fabric.

公开(公告)号：US20230167614A1

公开(公告)日：2023-06-01

申请号：US17982522

申请日：2022-11-08

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： TAEHOON KIM ,  Ki Young Eum ,  InHo Yeo ,  Yun Suk Kang ,  Dae-Sang Kim ,  Choon Seok Bang ,  Sungil Kim ,  Jeong Ryol Shin ,  KI HYUN KIM

IPC: E01D19/02 ,  E01D21/00

CPC classification number: E01D19/02 ,  E01D21/00 ,  E01D2101/285

Abstract: The present disclosure provides an assembly type bridge lower structure having a socket type elastic duct coupler and a method of constructing the same in which, in construction of an assembly type bridge lower structure that consists of an assembly type foundation part, an assembly type pillar part, and an assembly type coping part, a socket type elastic duct coupler is utilized, thus enabling shear key joining at connection portions of the assembly type foundation part, the assembly type pillar part, and the assembly type coping part, easily accommodating of construction error displacements of the socket type elastic duct coupler, improving watertightness at connection portions of the precast segments, easily accommodating an insertion angle of the insertion member including a steel strand, a steel bar, a reinforcing bar, a FRP, or the like, and preventing an overflow phenomenon that occurs when epoxy is excessively applied during bonding between the precast segments.

公开(公告)号：US11628971B2

公开(公告)日：2023-04-18

申请号：US17413065

申请日：2021-05-03

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Seung-Ho Jang

IPC: B65D19/38 ,  B65D19/00

Abstract: Proposed is an anti-vibration pallet. More particularly, the present disclosure relates to an anti-vibration pallet that is capable of realizing an effect of an air spring by using only a combination of an auxiliary mount and a main mount that are formed of elastic bodies provided between an upper plate and a lower plate, and is also capable of maximizing an anti-vibration performance by controlling an optimal anti-vibration load according to a cargo load. In order to achieve the objectives described above, the present disclosure includes: an upper plate on which cargo is loaded on a top portion thereof; a lower plate positioned below the upper plate; a main mount installed between the lower plate and the upper plate; and an auxiliary mount installed outside the main mount.

公开(公告)号：US20230087643A1

公开(公告)日：2023-03-23

申请号：US17830866

申请日：2022-06-02

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Suk Mun OH ,  Ho Chan KWAK ,  Ji Young SONG ,  Rag Gyo JEONG

IPC: B61L25/02 ,  B61L27/14 ,  G08G1/123 ,  G08G1/00

Abstract: The present disclosure provides a method and apparatus for determining coupling and decoupling positions between trains. In at least one embodiment, the present disclosure provides a method performed by an apparatus for determining coupling and decoupling positions between trains, the method comprising collecting performance data, simulation data, and real-time data, calculating a first parameter and a second parameter, and determining the coupling and decoupling positions between the trains.

公开(公告)号：US11525912B2

公开(公告)日：2022-12-13

申请号：US16652557

申请日：2018-12-10

Applicant: Korea Railroad Research Institute

Inventor： SuYong Choi ,  JaeHeon Choi ,  JungYoul Lim ,  ChangYoung Lee ,  KwanSup Lee ,  YongJun Jang ,  JeongMin Jo ,  JinHo Lee ,  MinHwan Ok ,  JaeHoon Kim ,  LeeHyeon Kim

IPC: G01S17/06 ,  B60L15/20 ,  B61B13/08 ,  B61B13/10

Abstract: The present disclosure provides a hypertube system for detecting a position of a hypertube vehicle, including a hypertube vehicle, a tube configured to surround a travel path of the hypertube vehicle, At least one LiDAR sensor each mounted on an inner wall of the tube and including a laser transmitter configured to irradiate a laser beam toward the hypertube vehicle and a laser receiver configured to detect a laser, and a reflector configured to reflect the laser irradiated from the LiDAR sensor, wherein the reflector may be disposed in the hypertube vehicle, and wherein the laser beam reflected from the reflector reaches the laser receiver of the LiDAR sensor to be used in detecting the position of the hypertube vehicle.