EP3339130B1 - Bogie for railway vehicle - Google Patents
Bogie for railway vehicle Download PDFInfo
- Publication number
- EP3339130B1 EP3339130B1 EP15901703.7A EP15901703A EP3339130B1 EP 3339130 B1 EP3339130 B1 EP 3339130B1 EP 15901703 A EP15901703 A EP 15901703A EP 3339130 B1 EP3339130 B1 EP 3339130B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- secondary spring
- plate
- bogie
- railroad
- railroad tie
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
- B61F5/52—Bogie frames
Description
- The present invention relates to a railroad-car bogie including secondary spring receivers in both end portions in a railroad tie direction of crossbeams forming an inner-frame bogie frame.
- A railroad-car bogie includes a bogie frame, wheel sets, axle-box support devices, and the like. The bogie frame mainly includes two side beams separately arranged in a rail direction and crossbeams arranged in a railroad tie direction and connecting center portions in the rail direction of the side beams. The wheel set is configured so that two wheels are fastened by an axle, and the axle-box support device includes an axle box that rotatably supports this wheel set at the bogie frame, a primary spring placed on the axle box and elastically supporting the axle box, and the like.
- In order to reduce a mass of the bogie, there is a bogie frame in which lengths of the crossbeams and the wheel sets in the railroad tie direction are reduced and the two side beams are arranged to be closer to center in the railroad tie direction of the crossbeams than a pair of wheels. This bogie frame is called "inner-frame bogie frame" (see PTL 1).
-
- PTL 1:
JP-A-2010-149808 - PTL 2:
CN 102923152-A proposes a bogie welding framework and a welding method thereof. - An inner-frame bogie frame includes a pair of right and left secondary springs (air springs or coil springs) which are placed in a center portion in a rail direction and elastically support a car body. In order to restrain rolling vibration that swings the car body around an axis in a longitudinal direction of the car body, it is desirable to provide primary springs and secondary springs so that an interval between the primary springs and an interval between the secondary springs in a railroad tie direction are increased as large as possible.
- However, in the inner-frame bogie frame in which an axle box is arranged to be closer to a center portion in the railroad tie direction than wheels, the interval between the primary springs in the railroad tie direction tends to be small. In order to restrain the above-mentioned rolling vibration, the inner-frame bogie frame in which the secondary springs are placed at a large interval in the railroad tie direction includes a secondary spring receiver having a cantilever structure in which crossbeams penetrating a side beam project from a center portion in a longitudinal direction of the side beam forming the bogie frame toward outside in the railroad tie direction (direction away from center portion in railroad tie direction).
- The secondary spring receiver of the inner-frame bogie frame has a cantilever structure, and therefore high stress tends to be generated in a joining portion of the side beam and the crossbeam which is a base of the secondary spring receiver. Thus, there is a problem in obtaining high strength without increasing a mass of the bogie.
- An object of the invention is to provide an inner-frame type railroad-car bogie in which reduction in weight is promoted and stress on connection portions between side beams and crossbeams forming secondary spring receivers can be reduced.
- In order to solve such a problem, in the invention, a railroad-car bogie according to
claim 1 is provided. Advantageous Effects of Invention - According to the invention, it is possible to promote reduction in weight and reduce stress on connection portions between side beams and crossbeams forming secondary spring receivers.
-
- [
Fig. 1] Fig. 1 is a plan view of a railroad-car bogie in an embodiment not covered by the claimed invention. - [
Fig. 2] Fig. 2 is a plan view of a bogie frame of the railroad-car bogie. - [
Fig. 3] Fig. 3 is an enlarged plan view of a secondary spring receiver A inFig. 2 . - [
Fig. 4] Fig. 4 is an enlarged bottom view of the secondary spring receiver A inFig. 2 . - [
Fig. 5] Fig. 5 is a cross-sectional view taken along B-B inFig. 3 . - [
Fig. 6] Fig. 6 is a cross-sectional view taken along C-C inFig. 3 . - [
Fig. 7] Fig. 7 is a cross-sectional view taken along B-B in a secondary spring receiver A in an embodiment of the invention. - Hereinafter, an embodiment not covered by the claimed invention will be described in detail with reference to the drawings. Note that directions used in the following description are a rail (longitudinal)
direction 100, a railroad tie (width)direction 110, and aheight direction 120, and those directions will be simply referred to as "rail direction 100", "railroad tie direction 110", and "height direction 120". -
Fig. 1 is a plan view of a railroad-car bogie in this embodiment not covered by the claimed invention. A railroad-car bogie (hereinafter, bogie) 1 includes abogie frame 5, wheel sets each of which includes twowheels 240 in both end portions in therailroad tie direction 110 of anaxle 230, axle-box support devices (not illustrated) that rotatably hold the wheel sets at thebogie frame 5, andbraking devices 56 that generate brake force in thewheels 240. - The
bogie frame 5 includes twoside beams 10 separately arranged in the rail direction and twocrossbeams 20 that are horizontally placed and connect center portions in therail direction 100 of the twoside beams 10. - The railroad-
car bogie 1 in this embodiment is an inner frame bogie whosewheels 240 are provided on the outside of theside beams 10 in the railroad tie direction 110 (direction away from center portions in railroad tie direction of crossbeams 20). A car body is elastically supported via secondary springs 210 (normally, air springs or coil springs) placed on an upper surface of thebogie frame 5 of the railroad-car bogie 1. - A lower surface (not illustrated) of an underframe forming a floor surface of the car body includes a center pin 250 whose tip portion is hung downward, and this tip portion of the center pin 250 is inserted into a center portion formed by the
side beams 10 and thecrossbeams 20 forming thebogie frame 5. In a case where the car body passes a curve, the railroad-car bogie 1 turns on a horizontal surface around a vertical axis of the center pin 250. -
Fig. 2 is a plan view of thebogie frame 5 of the railroad-car bogie 1. Thebogie frame 5 includes the twoside beams 10 separately arranged in therail direction 100, the twocrossbeams 20 that penetrate the center portions in therail direction 100 of theside beams 10, and secondary spring receivers A provided in both end portions in therailroad tie direction 110 of the twocrossbeams 20 and on which thesecondary springs 210 are placed. -
Fig. 3 is an enlarged plan view of the secondary spring receiver A inFig. 2 , andFig. 4 is an enlarged bottom view of the secondary spring receiver A inFig. 2 . Further,Fig. 5 is a vertical cross-sectional view (cross-sectional view taken along B-B inFig. 3 ) in the railroad tie direction of the secondary spring receiver A inFig. 2 , andFig. 6 is a vertical cross-sectional view (cross-sectional view taken along C-C inFig. 3 ) in the rail direction of the secondary spring receiver A inFig. 2 . - The secondary spring receiver A is formed as a box including the end portions in the
railroad tie direction 110 of the twocrossbeams 20, the center portion in therail direction 100 of the side beam 10 (between the two crossbeams 20), anupper plate 50a connected to upper portions of the end portions of thecrossbeams 20 and an upper portion of the center portion of theside beam 10, alower plate 50e connected to lower portions of the end portions of thecrossbeams 20 and a lower portion of the center portion of theside beam 10, areinforcing plate 51b connecting, in theheight direction 120, center portions in therailroad tie direction 110 of theupper plate 50a and thelower plate 50e, and aside plate 51a connecting, in theheight direction 120, end portions in therailroad tie direction 110 of theupper plate 50a and thelower plate 50e. Further, thebraking devices 56 are provided in both end portions of thecrossbeams 20 forming the secondary spring receiver A. - As illustrated in
Fig. 4 , thelower plate 50e haslighting holes 80. Note that, in this example, thereinforcing plate 51b is provided in the rail direction substantially in parallel to theside plate 51a, and both end portions thereof in the rail direction are welded to a side surface of eachcrossbeam 20, theupper plate 50a, and thelower plate 50e. Thebraking device 56 is provided in a range intersecting a surface 51bP (seeFig. 3 ) obtained by virtually extending the reinforcingplate 51b. A placingbase 52 is placed on an upper surface of theupper plate 50a, and thesecondary spring 210 is provided on the placingbase 52. - A mass of the car body of the railroad car is supported by the
secondary springs 210 provided in the railroad-car bogie 1, and a downward load (mass of car body) that thesecondary springs 210 receive is a moment load that acts in a direction in which the secondary spring receivers A provided in thebogie frame 5 are pressed down. This moment load is supported by the twocrossbeams 20, theupper plate 50a, and thelower plate 50e forming the box-shaped secondary spring receiver A via theplacing base 52. - Because of this moment load, a tensile load is generated in the
railroad tie direction 110 in a joining portion of an upper surface of the secondary spring receiver A and theside beam 10, and the tensile load is borne by theupper plate 50a. Further, because of this moment load, a compressive load is generated in therailroad tie direction 110 in a joining portion of a lower surface of the secondary spring receiver A and theside beam 10, and the compressive load is borne by thelower plate 50e. Furthermore, thelower plate 50e of the secondary spring receiver A has thelighting holes 80 so that the secondary spring receiver A does not have excessively high rigidity. This prevents a sudden change in rigidity at an abutting portion of the secondary spring receiver A and theside beam 10. The rigidity of the secondary spring receiver A can be adjusted by a thickness of thelower plate 50e, the number oflighting holes 80 and a shape thereof, and the like. - Therefore, even in a cantilever structure in which the secondary spring receiver A projects from the
side beam 10 in therailroad tie direction 110, it is possible to prevent stress from being concentrated in an abutting portion (E portion inFig. 5 ) of theupper plate 50a and theside beam 10 and an abutting portion (F portion inFig. 5 ) of thelower plate 50e and theside beam 10 and restrain generation of high stress. Further, because generation of high stress can be restrained, a reinforce member is not necessary, and therefore it is possible to promote reduction in weight of the railroad-car bogie 1. - Furthermore, the
braking devices 56 are provided to thecrossbeams 20 so as to be included in the extended surface 51bP of the reinforcingplate 51b forming the secondary spring receiver A. Therefore, even in a case where thebraking devices 56 grasp thewheels 240 and a moment load acts on thebraking devices 56 around axes along therailroad tie direction 110 of thecrossbeams 20 and even in a case where a large moment load caused by thebraking devices 56 acts, it is possible to restrain generation of high stress because onecrossbeam 20 and theother crossbeam 20 are connected by thereinforcing plate 51b, an upper edge of the reinforcingplate 51b is connected to the firstupper plate 50a, and a lower edge of the reinforcingplate 51b is connected to thelower plate 50e. - Furthermore, as illustrated in
Fig. 7 , theupper plate 50a of the secondary spring receiver A may be divided into a firstupper plate 50a and a secondupper plate 50b arranged in the railroad tie direction. With this, in a case where an assembly D (seeFig. 7 ) including thelower plate 50e, the firstupper plate 50a, theside plate 51a, and the reinforcingplate 51b is welded to thecrossbeams 20 and theside beam 10, it is possible to weld (weldedportion 90b) the abutting portion of thelower plate 50e and theside beam 10 also from above in theheight direction 120, and therefore it is possible to further increase strength of the joining portion of the lower surface of the secondary spring receiver A and theside beam 10. - Furthermore, the inside of the secondary spring receiver A (welded
portions 90a inFig. 5 and weldedportions 90c inFig. 6 ) can be welded by a welding torch inserted through thelighting hole 80 of thelower plate 50e. Therefore, the box-shaped secondary spring receiver A having higher strength can be provided in thebogie frame 5, and thus it is possible to promote reduction in weight without including a reinforcing member. -
- 1 .........
- bogie
- 5 ............
- bogie frame
- 10 ......
- side beam
- 20 .........
- crossbeam
- 50a ...
- first upper plate
- 50b ...
- second upper plate
- 50e ...
- lower plate
- 51a ......
- side plate
- 51b ...
- reinforcing plate
- 52 ...
- placing base
- 80 ......
- opening
- 90 .........
- weld bead
- 210 ......
- secondary spring
- 230 ...
- wheel set
- 240 ......
- wheel
- 250 ...
- center pin
- 100 ...
- rail direction
- 110 ......
- railroad tie direction
- 120 ...
- height direction
- A ...
- secondary spring receiver
- D ............
- assembly
Claims (1)
- A railroad-car bogie (1), comprising:two side beams (10) separately arranged in a rail direction (100);two crossbeams (20) separately arranged in a railroad tie direction (110) and penetrating respective center portions of the side beams 10; andtwo secondary spring receivers (A) on each of which a respective secondary spring (210) supporting a car body is placed, the secondary spring receivers (A) being on opposite sides of the bogie, outside the side beams (10), wherein:each of the secondary spring receivers (A) is a box includingend portions in the railroad tie direction (110) of the crossbeams (20),a center portion in the rail direction (100) of the respective side beam (10),an upper plate (50a) connecting upper portions of the end portions and an upper portion of the center portion,a lower plate (50e) connecting lower portions of the end portions and a lower portion of the center portion, anda side plate (51a) connecting end portions in the railroad tie direction (110) of the upper plate (50a) and the lower plate (50e);characterised in that:the lower plate (50e) has a lighting hole (80) for adjusting rigidity of the secondary spring receiver (A);the upper plate includes a first upper plate (50a) and a second upper plate (50b) arranged in the railroad tie direction (110);
each secondary spring receiver (A) includes a reinforcing plate (51b) provided substantially in parallel to the side plate (51a) and connected to the first upper plate (50a), the lower plate (50e), and the crossbeams (20);a braking device (56) is provided to the end portion in the railroad tie direction (110) of each crossbeam (20); andthe braking device (56) is provided to the respective crossbeam (20) at a position intersecting an extended surface of the reinforcing plate (51b).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2015/073216 WO2017029721A1 (en) | 2015-08-19 | 2015-08-19 | Bogie for railway vehicle |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3339130A1 EP3339130A1 (en) | 2018-06-27 |
EP3339130A4 EP3339130A4 (en) | 2019-04-17 |
EP3339130B1 true EP3339130B1 (en) | 2022-03-23 |
Family
ID=58051203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15901703.7A Active EP3339130B1 (en) | 2015-08-19 | 2015-08-19 | Bogie for railway vehicle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3339130B1 (en) |
JP (1) | JP6420485B2 (en) |
WO (1) | WO2017029721A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108311860B (en) * | 2018-03-14 | 2023-08-01 | 中铁第四勘察设计院集团有限公司 | Bogie replacement equipment without foundation pit |
CN112622971B (en) * | 2021-01-05 | 2022-07-22 | 中车唐山机车车辆有限公司 | Framework, bogie and rail vehicle |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5791838A (en) * | 1980-11-26 | 1982-06-08 | Kawasaki Heavy Ind Ltd | Truck frame for vehicle |
JPH0686212B2 (en) * | 1989-04-14 | 1994-11-02 | 株式会社日立製作所 | Bogie frame for railway vehicles |
JP4356540B2 (en) * | 2004-06-30 | 2009-11-04 | 住友金属工業株式会社 | Railcar bogie frame and railcar bogie |
EP1894807B2 (en) * | 2006-09-01 | 2013-11-20 | ALSTOM Transport Technologies | Bogie with improved space use |
JP2008207576A (en) * | 2007-02-23 | 2008-09-11 | Nippon Sharyo Seizo Kaisha Ltd | Truck frame for railroad vehicle and its manufacturing method |
FR2913654B1 (en) * | 2007-03-15 | 2009-07-03 | C G L Sarl | BOGGIE, IN PARTICULAR FOR FREIGHT TRANSPORT WAGON. |
JP4685921B2 (en) * | 2008-12-26 | 2011-05-18 | 株式会社日立製作所 | Railcar bogie |
JP5389578B2 (en) * | 2009-09-14 | 2014-01-15 | 日本車輌製造株式会社 | Beam |
JP5524634B2 (en) * | 2010-01-20 | 2014-06-18 | 公益財団法人鉄道総合技術研究所 | Railcar bogie |
JP5357835B2 (en) * | 2010-06-08 | 2013-12-04 | 公益財団法人鉄道総合技術研究所 | Railcar assembly carriage frame and crack detection system thereof |
CN102923152A (en) * | 2011-08-10 | 2013-02-13 | 南车青岛四方机车车辆股份有限公司 | Light bogie welding framework and welding method thereof |
CN104527701A (en) * | 2014-12-10 | 2015-04-22 | 长春轨道客车股份有限公司 | Bullet train steering frame of meter gauge motor train unit |
-
2015
- 2015-08-19 WO PCT/JP2015/073216 patent/WO2017029721A1/en active Application Filing
- 2015-08-19 JP JP2017535187A patent/JP6420485B2/en active Active
- 2015-08-19 EP EP15901703.7A patent/EP3339130B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
JPWO2017029721A1 (en) | 2018-05-10 |
EP3339130A4 (en) | 2019-04-17 |
EP3339130A1 (en) | 2018-06-27 |
WO2017029721A1 (en) | 2017-02-23 |
JP6420485B2 (en) | 2018-11-07 |
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