KR20030054576A - side frame use for electric train - Google Patents

side frame use for electric train Download PDF

Info

Publication number
KR20030054576A
KR20030054576A KR1020010084753A KR20010084753A KR20030054576A KR 20030054576 A KR20030054576 A KR 20030054576A KR 1020010084753 A KR1020010084753 A KR 1020010084753A KR 20010084753 A KR20010084753 A KR 20010084753A KR 20030054576 A KR20030054576 A KR 20030054576A
Authority
KR
South Korea
Prior art keywords
side frame
extrusion
shape
members
welding
Prior art date
Application number
KR1020010084753A
Other languages
Korean (ko)
Inventor
정종덕
한석윤
김원경
이관섭
Original Assignee
한국철도기술연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국철도기술연구원 filed Critical 한국철도기술연구원
Priority to KR1020010084753A priority Critical patent/KR20030054576A/en
Publication of KR20030054576A publication Critical patent/KR20030054576A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/08—Sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/041—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures with bodies characterised by use of light metal, e.g. aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/043—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures connections between superstructure sub-units
    • B61D17/045—The sub-units being construction modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/02—Side panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/24—Frameworks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/30—Railway vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

PURPOSE: A side frame for a railway vehicle is provided to cut down extrusion cost by reducing the number of parts with equalizing the shape and size of extrusion members, and to improve the rigidity and the strength by preventing damage of the base metal with forming the zigzag connecting portion. CONSTITUTION: A side frame(1) is formed by connecting plural extrusion members(11,12,13,14,15) made of aluminum and by welding connecting portions of the extrusion members. The size and the shape of the aluminum extrusion member are equal to the size and the shape of the other extrusion member. The curved surface having the same curvature is formed in the extrusion member, and assembling pieces(161,161') are zigzagged in the connecting portion to minimize defect in welding. Expenses are reduced by decreasing the number of parts with forming the same size and shape of the extrusion members, and the rigidity and the appearance of the side frame are improved by preventing damage of the base metal with zigzagging the connecting portion.

Description

도시철도차량용 사이드프레임{side frame use for electric train}Side frame use for electric train

본 발명은 도시철도차량용 사이드프레임에 관한 것으로, 더욱 상세하게는 도시철도차량의 사이드프레임을 형성하는 압출부재를 형성함에 있어, 각 압출부재가 동일한 칫수와 형상을 갖도록하여 부재수를 줄임에 따라 압출비용을 최소화할 수 있으며, 연결부를 지그재그형태로 형성하여 모재의 손상방지와 함께 강성과 강도를 갖도록 한 도시철도차량용 사이드프레임에 관한 것이다.The present invention relates to a side frame for an urban railway vehicle, and more particularly, in forming an extrusion member for forming a side frame of an urban railway vehicle, each extrusion member is extruded by reducing the number of members by having the same dimensions and shapes It is possible to minimize the cost, and to form a zigzag connection to the side frame for urban railway vehicles to have rigidity and strength together with preventing damage to the base material.

일반적으로, 대형수송수단으로 사용되고 있는 도시철도는 점차적으로 사용인원이 많아짐에 따라 그 중요성이 확충되고 있으며, 여러 대도시에서 건설 또는 운영되고 있는바,In general, the importance of urban railway used as a means of transportation is increasing as the number of people gradually increases, and it is being constructed or operated in many large cities.

종래 도시철도로 운행되었던 차량은 일반강제를 사용한 차체로 된 차량을 사용하였으나, 높은 자체하중 및 부식의 문제점으로 인해 스테인레스 스틸강을 사용하게 되었으며, 이와같은 스테인레스 스틸강을 이용한 차량또한 차량중량의 증가에 따른 동력비용 및 선로보수비용이 과다하게 소요되는 문제점이 상존하여 근래에는 알류미늄 압출부재를 이용한 차체가 널리 사용되고 있다.Conventionally, the vehicle operated by urban railway used a vehicle made of general steel, but due to the problems of high self load and corrosion, stainless steel was used. Vehicles using such stainless steel also increase vehicle weight. Due to the problem of excessive power cost and track repair cost, the vehicle body using aluminum extrusion member has been widely used in recent years.

이에, 알류미늄 압출부재를 사용한 기존의 도시철도차량에 있어, 사이드프레임은 언더프레임과 지붕골조의 켄트레일 사이에 각기 다른 치수와 형상을 갖는 압출부재를 연결하므로서 형성되는데, 이러한 사이드프레임은 차량에 작용하는 수직 및 수평하중을 지지할 수 있는 구조를 필요로하게 되므로 대형 압출재를 사용하게 된다.Thus, in the existing urban railway vehicle using the aluminum extrusion member, the side frame is formed by connecting the extrusion member having different dimensions and shapes between the underframe and the pentrail of the roof frame, the side frame acts on the vehicle This requires a structure capable of supporting vertical and horizontal loads, so large extrusion materials are used.

하지만, 종래 사이드프레임(100)은 도 1에서와 같이 압출부재(110,120,130,140,150 )가 각각 형상과 칫수를 달리하는 다수개(5개)로 구분되어져 있어, 압출부재를 성형하기 위한 금형비용과 제작시간이 많이 소요되는 문제점과 함께 작업에 필요한 제작공수가 많아 제작시간과 비용이 많이 소요되는 문제점을 갖는 것이었다.However, in the conventional side frame 100, as shown in Figure 1, the extrusion members 110, 120, 130, 140, 150 are divided into a plurality (five) of different shapes and dimensions, respectively, the mold cost and manufacturing time for molding the extrusion member is In addition to a lot of problems and a lot of manufacturing work required for the work was a problem that takes a lot of production time and cost.

또한, 종래 사이드프레임(100)은 도 1에 확대도시된 바와같이 부재와 부재 이음시 동일 폭방향으로 용접할 수 있는 구조를 취하는 것인데, 이와같은 연결부(160)는 용접으로 인한 모재의 손상이 동일폭방향으로 나타나게 되므로 연결부의 결함 및 모재가 열영향을 받아 약해짐에 따라 이를 해결하고자 부재의 두께를 두껍게 설계하게 되므로 그만큼 차체 중량이 증가하게 되는 문제점을 갖는 것이며,각 부재의 형상이 직선형태를 취하게 되므로 부재와 부재의 연결시 각이 발생함에 따라 외관이 미려하지 못한 문제점을 갖는 것이었다.In addition, the conventional side frame 100 is to take a structure that can be welded in the same width direction when the member and the member joint, as shown in enlarged in Figure 1, this connection portion 160 is the same damage to the base material due to welding Since it appears in the width direction, the thickness of the member is designed to solve the problem as the defect of the connection portion and the base material is weakened by the heat effect, so that the weight of the vehicle increases, so that the shape of each member has a straight shape Since the angle is generated when the member and the member is connected, the appearance was not beautiful.

이에, 본 발명은 전술한 종래 도시철도차량의 사이드프레임이 갖는 제반적인 문제점을 해결하고자 창안된 것으로,Thus, the present invention was devised to solve the general problems of the side frame of the conventional urban railway vehicle described above,

본 발명의 목적은 도시철도차량의 사이드프레임을 형성하는 압출부재를 형성함에 있어, 각 압출부재가 동일한 칫수와 형상을 갖도록하여 부재수를 줄임에 따라 압출비용을 최소화할 수 있으며, 연결부를 지그재그형태로 형성하여 모재의 손상방지와 함께 강성과 강도를 갖도록 함은 물론 외관의 미려도또한 향상되도록 한 도시철도차량용 사이드프레임을 제공함에 있다.An object of the present invention is to form an extrusion member for forming the side frame of the urban railway vehicle, each extrusion member to have the same dimensions and shapes to minimize the extrusion cost by reducing the number of members, zigzag connection portion It is to provide a side frame for an urban railway vehicle to prevent the damage to the base material to have stiffness and strength, as well as to enhance the appearance of the appearance.

상기한 목적을 달성하기 위한 본 발명의 구체적인 수단으로는;As a specific means of the present invention for achieving the above object;

트러스트구조의 중공단면적을 갖으며, 다수개 알류미늄압출부재의 연결부를 각각 용접하므로서 연결형성되는 도시철도차량용 사이드프레임에 있어서,In the side frame for urban railway vehicles having a hollow cross-sectional area of the trust structure, the connection is formed by welding the connecting portions of a plurality of aluminum extrusion members,

상기 알류미늄 압출부재의 칫수와 형상을 동일하게 형성하되, 각 압출부재는 동일한 곡률의 곡선면을 갖도록 하고, 연결부의 결합편이 지그재그구조로서 형성되는 도시철도차량용 사이드프레임을 구비하므로서 구현된다.Although the dimensions and shape of the aluminum extrusion member are formed in the same shape, each extrusion member has a curved surface with the same curvature, and is implemented by having a side frame for an urban railway vehicle in which a coupling piece of a connecting portion is formed as a zigzag structure.

도 1은 종래 사이드프레임의 구성도1 is a configuration diagram of a conventional side frame

도 2는 본 발명에 따른 도시철도차량용 사이드프레임의 구성도.2 is a block diagram of a side frame for a city railway vehicle according to the present invention.

<도면주요부위에 대한 부호의 설명><Explanation of symbols for major parts of drawing>

1 : 사이드프레임 11,12,13,14,15 :1: side frame 11, 12, 13, 14, 15:

16 : 연결부 161,161' : 결합편16 connection part 161,161 ': coupling piece

이하, 본 발명의 바람직한 실시예를 첨부도면에 의거 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 사이드프레임의 전체 구성도이다.2 is an overall configuration diagram of a side frame according to the present invention.

이에 도시된 바와같이 본 발명에 따른 사이드프레임은 트러스트구조의 중공단면을 갖는 각 압출부재의 연결부를 용접하여 형성된다.As shown in the drawing, the side frame according to the present invention is formed by welding a connection part of each extruded member having a hollow cross section of a trust structure.

여기서, 본 발명의 사이드프레임(1)은 도 2에서와 같이 다수개 압출부재(본 발명의 이해를 돕기위해 제 1, 2, 3, 4, 5압출부재(11,12,13,14,15)로 분류함.)를 연결하여 형성되는데, 각 압출부재는 동일한 칫수와 형상을 갖는 것이며, 도시철도차량에 있어 한 량의 길이(통상적으로 20미터 차량이 많이 사용됨.)에 맞게 길이방향으로 연속 압출성형되는 것인데,Here, the side frame 1 of the present invention is a plurality of extruded members as shown in Figure 2 (first, 2, 3, 4, 5 extruded members (11, 12, 13, 14, 15 to help the understanding of the present invention) Each extruded member has the same dimensions and shape, and is continuous in the longitudinal direction to fit a length (typically 20-meter vehicles are used) in urban railway vehicles. Being extruded,

이와같은 각 압출부재(11,12,13,14,15)는 동일한 곡률의 곡선면을 갖게 되며, 양 끝단부로는 도 2에 확대도시된 바와같은 설치부(16)가 형성된다.Each of the extruded members 11, 12, 13, 14, and 15 may have curved surfaces of the same curvature, and both ends are provided with an installation portion 16 as shown in FIG. 2.

이때, 상기 설치부(16)는 도 2에 확대도시된 바와같이 용접시 용접부위의 결함을 최소화하기 위해 결합편(161,161')을 지그재그형태로 위치시키게 되는데,At this time, the installation portion 16 is to place the coupling pieces 161, 161 'in a zigzag form in order to minimize the defect of the welding portion during welding, as shown in an enlarged view in FIG.

이는 각 압출부재의 끝단 이음부위를 용접함에 따른 열영향을 고려하여 그 치수 만큼 결합편(161,161')의 형성위치에 간격을 주어 지그재그형태로 설계한 것이다.This is designed in a zigzag form with a spacing at the position where the coupling pieces 161 and 161 'are formed as much as the dimensions in consideration of the thermal effect of welding the end joints of the extruded members.

한편, 제 1, 2, 3, 4, 5 압출부재(11,12,13,14,15)에 있어, 지붕골조와 결합되는 제 5압출부재(15)는 나머지 압출부재에 비해 짧은 길이를 갖게 되는데, 이와같은 제 5 압출부재(15)는 동일한 칫수와 형상을 갖는 제 1, 2, 3, 4압출부재(11,12,13,14)를 절단하고 끝단으로 설치부를 형성하므로서 성형할 수도 있고, 별도의 금형을 구비하여 압출성형할 수도 있는 것이다.On the other hand, in the first, second, third, fourth, fifth extruded members (11, 12, 13, 14, 15), the fifth extrusion member (15) coupled to the roof frame has a shorter length than the other extruded members. The fifth extrusion member 15 may be molded by cutting the first, second, third, and fourth extrusion members 11, 12, 13, and 14 having the same dimensions and shapes and forming the installation portion at the end. It is also possible to have an additional mold for extrusion molding.

따라서, 상기와 같이 동일한 칫수와 형상을 갖는 제 1,2,3,4,5압출부재(11,12,13,14,15)의 각 설치부(16)를 용접하여 형성되는 본 발명의 사이드프레임(1)은 도 2에서와 같이 각 압출부재가 동일한 곡률의 곡선면을 갖는 것임에 따라 향상된 자체미관을 갖게 됨은 물론, 조립작업또한 원활히 행할 수 있으며, 특히 용접부위의 결함을 최소화하기 위해 설치부의 결합편을 지그재그형태로 형성하여 모재가 열영향을 받아 약해지는 것을 방지할 수 있아, 충분한 강도와 강성을 갖을 수 있도록 하여 차체의 경량화를 기할 수 있는 것이다.Accordingly, the side of the present invention formed by welding the respective installation portions 16 of the first, second, third, fourth, and fifth extrusion members 11, 12, 13, 14, and 15 having the same dimensions and shapes as described above. As shown in FIG. 2, the frame 1 has improved self-looking as each extruded member has a curved surface of the same curvature, as well as an assembling operation can be performed smoothly, and in particular, to minimize defects in the welding area By forming the negative coupling pieces in a zigzag form, the base material can be prevented from being weakened by the heat effect, and the weight of the vehicle body can be reduced by providing sufficient strength and rigidity.

이상과 같이 본 발명에 따른 도시철도차량용 사이드프레임은 각 압출부재가 동일한 칫수와 형상을 갖도록하여 그만큼 부재수를 줄일 수 있어, 제작비용(압출비용)을 절감할 수 있는 효과를 갖는 것이며,As described above, the side frame for urban railway vehicles according to the present invention can reduce the number of members by having the same dimensions and shapes, thereby reducing the manufacturing cost (extrusion cost),

또한, 각 압출부재는 동일한 곡률의 곡선면을 갖도록하므로서 원활한 조립작업을 행할 수 있어 제작공수또한 줄일 수 있는 효과를 갖는 것이다.In addition, each extruded member has a curved surface of the same curvature, it is possible to perform a smooth assembly work has the effect of reducing the manufacturing work.

한편, 연결부를 지그재그형태로 위치시키므로서 용접시 모재의 손상을 최소화할 수 있어, 충분한 강성과 강도를 갖게 되는 장점을 갖는 것이다.On the other hand, it is possible to minimize the damage of the base material during welding by placing the connecting portion in a zigzag form, has the advantage of having sufficient rigidity and strength.

Claims (1)

트러스트구조의 중공단면적을 갖으며, 다수개 알류미늄압출부재의 연결부를 각각 용접하므로서 연결형성되는 도시철도차량용 사이드프레임에 있어서,In the side frame for urban railway vehicles having a hollow cross-sectional area of the trust structure, the connection is formed by welding the connecting portions of a plurality of aluminum extrusion members, 상기 알류미늄 압출부재의 칫수와 형상을 동일하게 형성하되, 각 압출부재는 동일한 곡률의 곡선면을 갖도록 하고, 연결부의 결합편이 지그재그구조로서 형성되는 도시철도차량용 사이드프레임.The dimensions and shape of the aluminum extrusion member is formed in the same shape, each extrusion member is to have a curved surface of the same curvature, the side frame for an urban railway vehicle is formed as a zigzag structure of the coupling pieces of the connecting portion.
KR1020010084753A 2001-12-26 2001-12-26 side frame use for electric train KR20030054576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020010084753A KR20030054576A (en) 2001-12-26 2001-12-26 side frame use for electric train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020010084753A KR20030054576A (en) 2001-12-26 2001-12-26 side frame use for electric train

Publications (1)

Publication Number Publication Date
KR20030054576A true KR20030054576A (en) 2003-07-02

Family

ID=32213205

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010084753A KR20030054576A (en) 2001-12-26 2001-12-26 side frame use for electric train

Country Status (1)

Country Link
KR (1) KR20030054576A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106740922A (en) * 2016-11-30 2017-05-31 中车青岛四方机车车辆股份有限公司 Track vehicle body structure and the rail vehicle with it

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51116512U (en) * 1975-03-18 1976-09-21
JPS56134263U (en) * 1970-09-23 1981-10-12
EP0608761A1 (en) * 1993-01-23 1994-08-03 VAW Aluminium AG Coach bodywork, especially for railways
JPH06227391A (en) * 1992-12-30 1994-08-16 Fiat Ferroviaria Spa Main body structure for railroad rolling stock
KR950031741A (en) * 1994-03-18 1995-12-20 가나이 쯔도무 Railway vehicle body and its manufacturing method
JPH10175542A (en) * 1996-12-20 1998-06-30 Hitachi Ltd Railway rolling stock structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134263U (en) * 1970-09-23 1981-10-12
JPS51116512U (en) * 1975-03-18 1976-09-21
JPH06227391A (en) * 1992-12-30 1994-08-16 Fiat Ferroviaria Spa Main body structure for railroad rolling stock
EP0608761A1 (en) * 1993-01-23 1994-08-03 VAW Aluminium AG Coach bodywork, especially for railways
KR950031741A (en) * 1994-03-18 1995-12-20 가나이 쯔도무 Railway vehicle body and its manufacturing method
JPH10175542A (en) * 1996-12-20 1998-06-30 Hitachi Ltd Railway rolling stock structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106740922A (en) * 2016-11-30 2017-05-31 中车青岛四方机车车辆股份有限公司 Track vehicle body structure and the rail vehicle with it

Similar Documents

Publication Publication Date Title
US5685229A (en) Railway car body structures and method of making them
KR100459092B1 (en) Friction stir joining method and structure body manufactured according to friction stir joining method
KR960008196B1 (en) Car body for railway rolling stock and method for fabricating car body
JP2006290027A (en) Vehicle body structure
US4958473A (en) Frame, angle member for use in the frame and method of making joint portion of the angel member
US6387469B1 (en) Composite part and method for producing the same
CN207790397U (en) Steel-aluminum conductor rail
JP3624527B2 (en) Railway car body
KR20030054576A (en) side frame use for electric train
JPH10315961A (en) Car body
JP5986190B2 (en) Rail vehicle structure
CN211252806U (en) Special cast aluminum joint for aluminum alloy vehicle body frame structure
JP2016037188A (en) Rail vehicle structure
WO2013077192A1 (en) Vehicle traveling on track
CN213497666U (en) Section bar crossbeam
CN110071467B (en) Bridge connecting device and bridge assembling structure
JPH05139295A (en) Rolling stock body structure
JPH0999870A (en) Floor structure for automobile
CN110816686A (en) Special cast aluminum joint for aluminum alloy vehicle body frame
CN212667517U (en) Connector suitable for being connected between automobile body crossbeam, side wall board and threshold roof beam
KR100383563B1 (en) Underframe for railway rolling stock and manufacture method
JPH09164947A (en) Rolling stock structural body
JP3183790B2 (en) Brazed honeycomb panel unit and method of manufacturing the same
CN212641215U (en) Variable cross-section polygonal steel arch internode positioning device
CN210102306U (en) Combined tray

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application
J201 Request for trial against refusal decision
J301 Trial decision

Free format text: TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20040714

Effective date: 20051027