CN106347405B - A kind of low-floor rail vehicle anticreeper mounting base - Google Patents
A kind of low-floor rail vehicle anticreeper mounting base Download PDFInfo
- Publication number
- CN106347405B CN106347405B CN201610907444.2A CN201610907444A CN106347405B CN 106347405 B CN106347405 B CN 106347405B CN 201610907444 A CN201610907444 A CN 201610907444A CN 106347405 B CN106347405 B CN 106347405B
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- mounting base
- seat
- interface
- anticreeper
- low
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- 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
- B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
- B61F19/04—Bumpers or like collision guards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The present invention relates to a kind of low-floor rail vehicle anticreeper mounting bases, mounting base is body structure, and the installation interface of the hitch for being fixedly connected with hitch mounting base and/or the drivers' cab installation interface for being fixedly connected with drivers' cab car body are provided in mounting base and/or the anticreeper for installing anti-creep power-absorbing installs interface.The present invention is not only simple in structure, but also mounting base integrally occupies little space, meet the narrow installation requirement of low floor vehicle chassis space, simultaneously under the premise of ensureing the mounting base rigidity of structure with bonding strength, light-weight design to the maximum extent is also achieved, the light-weighted requirements at the higher level of vehicle are met.
Description
Technical field
The present invention relates to a kind of rail vehicle front end anti-creep device, more particularly to a kind of anticreeper for rail car installation
Seat, belongs to rail vehicle manufacturing technology field.
Background technology
Rapid proliferation with current domestic city rail traffic and popularization, light-duty rail traffic vehicle demand increase year by year
Add.Low floor vehicle is runed in the intensive urban district of urban population, and road vehicles are more, road conditions are complicated, and accident probability height occurs,
Therefore higher requirement is improved to the safety Design of train, be mounted on vehicle front end collision energy-absorbing element utilization rate compared with
It is high.
A kind of train front end with anti-climbing energy-absorbing device is disclosed in the patent of Patent No. 201310072635.8
Composition is fixedly mounted coupler pocket in the front end of chassis, anti-climbing energy-absorbing device mounting base is fixedly mounted again on coupler pocket, prevents
It climbs energy absorption device to be fixedly mounted in mounting base, wherein anti-climbing energy-absorbing device mounting base is by pedestal and is arranged in pedestal transverse direction
The mounting cylinder at both ends forms, and pedestal is made of substrate and multiple reinforcing ribs, and anti-climbing energy-absorbing device is then mounted on mounting cylinder.Although
The structure of the chassis front end can effectively weaken in train collision and eliminate impact force, but the knot of entire chassis front end
Structure is complicated, and size is larger, and occupied space is big, is not suitable on the chassis of the low-floor rail vehicle of narrow space, also without
Method meets the light-weighted requirement of vehicle.
Invention content
The present invention want it is dissatisfied certainly the technical issues of be to provide it is a kind of it is simple in structure, occupy little space, and lightweight can be met and wanted
The low-floor rail vehicle asked anticreeper mounting base.
To achieve the above object, the technical scheme is that:
A kind of low-floor rail vehicle anticreeper mounting base, mounting base is body structure, is arranged in mounting base useful
Interface is installed in the hitch being fixedly connected with hitch mounting base and/or the drivers' cab installation for being fixedly connected with drivers' cab car body
Interface and/or for install anti-creep power-absorbing anticreeper install interface.
Further, the drivers' cab car body and/or anti-creep power-absorbing are fixed on by fastener in mounting base.
Further, the mounting base is the upper layer and lower layer structure being fixed together, respectively upper mounting seat and lower peace
Seat is filled, the drivers' cab installation interface is arranged in the upper mounting seat, and the hitch installation interface and anticreeper install interface
It is arranged in the lower mounting seat.
Further, the upper mounting seat is the body structure that section is the degree of lip-rounding.
Further, the drivers' cab installation interface is arranged in the end of the upper mounting seat both sides, and drivers' cab car body is fixed
In upper mounting seat, the A columns of drivers' cab car body are fixed on drivers' cab by fastener and install interface.
Further, the lower mounting seat is by the intermediate first part being arranged along cross-car and on first part both sides edge
The longitudinally disposed second part composition of car body, hitch installation interface are arranged in the first part, each described the
The anticreeper installation interface is provided on two parts.
Further, the first part of the lower mounting seat is divided into upper layer and lower layer structure, and width at the middle and upper levels is less than lower layer
Width, the structure on upper layer and the second part of both sides surround the space of a U-shaped jointly.
Further, the upper layer and lower layer structure of the first part is the body structure that section is the degree of lip-rounding.
Further, hitch installation interface be opened in lower layer's body structure of the first part along car body longitudinal direction
The construction opening of extension, hitch mounting base are fixed in the construction opening.
Further, the second part is the body structure of the section degree of lip-rounding, and the anticreeper installation interface is setting in institute
State the installing port and screw seat for fixing anti-creep power-absorbing on the end plate of second part longitudinal direction both ends.
Further, the size of the installing port is more than the size of the anti-creep power-absorbing.
Further, the both side ends of the upper mounting seat protrude from the both side ends of the lower mounting seat, in the lower peace
The fixed seat of an inverted L-shaped is fixed on the outside of dress seat, the both side ends of the upper mounting seat are fixed on the level of the fixed seat
On plate.
Further, also integrally disposed in the mounting base to have hitch ancillary equipment that interface is installed.
In conclusion a kind of low-floor rail vehicle anticreeper mounting base provided by the invention, compared with prior art,
It has the following advantages that:
(1) the anticreeper mounting base in the present invention integrally uses the structure of degree of lip-rounding babinet, and hitch is installed interface, driver
Interface is installed in room and anticreeper installation interface is arranged in mounting base, not only simple in structure, but also mounting base integrally occupies sky
Between it is small, meet the narrow installation requirement of low floor vehicle chassis space, while ensureing the mounting base rigidity of structure and connecting by force
Under the premise of degree, light-weight design to the maximum extent is also achieved, meets the light-weighted requirements at the higher level of vehicle.
(2) the anticreeper mounting base in the present invention integrally uses the structure of degree of lip-rounding babinet, effectively limits collision deformation
In end underframe region, it is ensured that moderate finite deformation does not occur for guest room structure, and the living space of passenger can be ensured.Meet vehicle quilt
The problem of moving security requirement, and anticreeper mounting base stress concentration can be effectively improved, to significantly reduce stress damage
Bad degree and effectively prolong the service life.
(3) drivers' cab car body and anti-creep power-absorbing are fixedly connected on by fastener in mounting base in the present invention, are being damaged
It is easier to replace after bad, is advantageously implemented the interchangeability of drivers' cab car body and anti-creep power-absorbing.
Description of the drawings
Fig. 1 is one mounting base positive structure schematic of the embodiment of the present invention;
Fig. 2 is one mounting base reverse structure schematic of the embodiment of the present invention.
As depicted in figs. 1 and 2, hitch installs interface 1, and drivers' cab installs interface 2, and anticreeper installs interface 3, upper mounting seat
4, lateral part 4-1, lateral part 4-2, protrude part 4-3, lower mounting seat 5, first part 5-1, second part 5-2, and first
Top plate 6, first end plate 7, the first side plate 8, lightening hole 9, lightening hole 10, reinforcing beam 11, construction opening 12, hitch ancillary equipment peace
Attaching mouth 13, the second top plate 14, the second end plate 15, the second side plate 16, installing port 17, screw seat 18, fixed seat 19, reinforcing steel
20, lightening hole 21.
Specific implementation mode
Present invention is further described in detail with specific implementation mode below in conjunction with the accompanying drawings:
As depicted in figs. 1 and 2, a kind of low-floor rail vehicle anticreeper mounting base provided by the invention, is applied to
On the railways vehicles such as 100% low-floor tramcar, integral solder is fixed on the front end of a body frame.Anticreeper is installed
Seat is whole to use body structure, and is welded by carbon steel material group, can be provided in mounting base for hitch mounting base
The hitch installation interface 1 being fixedly connected or the drivers' cab for being fixedly connected with drivers' cab car body install interface 2 or for pacifying
The anticreeper for filling anti-creep power-absorbing installs interface 3.In the present embodiment, then hitch is preferably installed into interface 1, drivers' cab installation connects
Mouth 2 and anticreeper installation interface 3 are integrally disposed in mounting base.
In the present embodiment, mounting base is preferably using the upper layer and lower layer structure being fixed together, respectively upper mounting seat 4
With lower mounting seat 5, upper mounting seat 4 is weldingly fixed on the top of lower mounting seat 5, and drivers' cab is installed interface 2 and is arranged in upper mounting seat 4
On, hitch installs interface 1 and anticreeper installation interface 3 is arranged in lower mounting seat 5.
As depicted in figs. 1 and 2, upper mounting seat 4 is the body structure that section is the degree of lip-rounding, by the first top plate 6, both ends first
End plate 7, both sides 8 groups of the first side plate weld.Wherein, first end plate 7 refers to two ends on the front-rear direction of car body longitudinal direction
Plate, the first side plate 8 refer to two side plates on cross-car left and right directions, below the definition to " end plate " and " side plate " and this
It is identical.
The lateral part 4-2 groups of the whole lateral part 4-1 and both sides being arranged along cross-car by centre of upper mounting seat 4
At, lateral part 4-2 is formed from lateral part 4-1 to the bending of chassis direction, in order to match with the shape of drivers' cab car body, side
It is preferably tilting structure to part 4-2.
Drivers' cab installation interface 2 is arranged in the end of 4 both sides of upper mounting seat, and it is circular installation that drivers' cab, which installs interface 2,
Hole, drivers' cab fiberglass car body are fixed on adhesive on the first top plate 6 of upper mounting seat 4, and the A columns of drivers' cab then pass through fastening
Part is fixed at drivers' cab installation interface 2, and this mounting structure can be individually replaced when drivers' cab car body damages, be conducive to reality
The interchangeability of existing drivers' cab car body.In the present embodiment, there is a protrusion protruded outward in the end of lateral part 4-2
Divide 4-3, drivers' cab installation interface 2 is then arranged on the 4-3 of the protrusion part, in this way it is possible to prevente effectively from drivers' cab installs interface 2
The stress concentration at place.
Multiple lightening holes 9 are provided in the first end plate 7 of the inside towards chassis direction, are integrally tied in guarantee mounting base
Under the premise of structure strength and stiffness, mitigate weight, to meet the light-weighted requirement of vehicle.The weldering of first top plate 6 and first end plate 7
It connects seam crossing to mutually stagger, effectively avoids stress concentration.
Lower mounting seat 5 is by the intermediate first part 5-1 being arranged along cross-car and in the both sides first part 5-1 along car body
Longitudinally disposed second part 5-2 compositions.Wherein, first part 5-1 is preferably adopted as bilevel structure, upper layer 5-1-1
Width be less than lower layer 5-1-2 width, the width of upper layer 5-1-1 is of same size with the lateral part 4-1's of upper mounting seat 4,
The width of lower layer 5-1-2 and the second part 5-2's of both sides is of same size, and the front end face of upper layer 5-1-1 protrudes from lower layer 5-1-
2, upper layer 5-1-1 and the second part 5-2 of both sides surround the space of a U-shaped jointly, and U-shaped is spatially located at the upper of lower layer 5-1-2
Side.The setting of U-shaped space is not only advantageous to be fixedly connected with bottom frame floor and longeron, and the deformation for being also more advantageous to mounting base inhales
Energy.
The upper layer and lower layer structure of first part 5-1 is degree of lip-rounding body structure, and upper layer 5-1-1 is by the end of top plate, both ends
Plate and bottom plate group are welded, and the bottom edge of two first end plates 7 of upper mounting seat 4 is weldingly fixed on the top plate of upper layer 5-1-1.
Multiple lightening holes 10 are provided on end plate on the inside of the 5-1-1 of upper layer, in the premise for ensureing mounting base overall construction intensity and rigidity
Under, mitigate weight, to meet the light-weighted requirement of vehicle.
Lower layer 5-1-2 is in integrally flat, is welded by top plate, the end plate at both ends and bottom plate group, the bottom plate of upper layer 5-1-1
It is weldingly fixed on the top plate of lower layer 5-1-2 or the top plate of lower layer 5-1-2 protrudes outward the bottom plate i.e. as upper layer 5-1-1.
In order to ensure the overall construction intensity of lower layer 5-1-2, there are multiple reinforcing beams 11 in the body structure interior welds of lower layer 5-1-2,
Reinforcing beam 11 is longitudinally disposed along car body, is arranged in parallel between multiple reinforcing beams 11.
Hitch is set on lower layer 5-1-2, interface 1 is installed, hitch installation interface 1 is to be opened in lower layer's 5-1-2 body structures
The construction opening 12 being longitudinally extended along car body, hitch mounting base (not shown) is fixed on installation and opens by welding
In mouth 12, hitch is then fixed on by fastener in hitch mounting base.The lower layer 5-1-2 of body structure can not only be provided enough
Structural strength, and when hitch collides, can effectively absorb collision energy, collision deformation is limited in end underframe area
Domain.
In the present embodiment, hitch is using folding hitch, and in vehicle operation, hitch is folded in chassis most
Inside the switching mechanism in front, in order to fix hitch, it is additionally provided with the installation of hitch ancillary equipment on the end plate of lower layer 5-1-2 and connects
Mouth 13, it is the multiple mounting holes being opened on end plate that hitch ancillary equipment, which installs interface 13, and the fixing device for fixing hitch is logical
Fastener is crossed to be fixed at hitch ancillary equipment installation interface 13.
Second part 5-2 also be degree of lip-rounding body structure, by the second top plate 14, second end plate 15 at both ends, both sides second
Side plate 16 and bottom plate (do not indicate) group and weld in figure, the upper layer 5- of the second top plate 14 and first part 5-1 of second part 5-2
The structure of 1-1 being integrated by top plate can also be spliced by plurality of steel plates and is welded.The bottom plate of second part 5-2 and first
The bottom plate of the lower layer 5-1-2 of part 5-1 is structure as a whole or is welded by plurality of steel plates splicing.The lower layer of first part 5-1
The top plate of 5-1-2, the end plate of the two sides of end plate and bottom plate and upper layer 5-1-1, bottom plate two sides be weldingly fixed on second
On the second side plate 16 of part 5-2.
Anticreeper installation interface 3 is both provided on each second part 5-2, it is solid on each anticreeper installation interface 3
The integral type anti-creep power-absorbing of Dingan County's dress generally U-shaped structure.It is that setting is vertical in second part 5-2 that anticreeper, which installs interface 3,
The installing port 17 and screw seat 18 for fixing anti-creep power-absorbing on the second end plate of both ends 15.Anti-creep power-absorbing includes
The anti-climbing tooth of front end and the power-absorbing at rear portion, anti-creep power-absorbing pass through front and back along the parallel longitudinal setting of car body, power-absorbing
It is fixedly connected respectively with screw seat 18 by four bolt (not shown)s after two installing ports 17.Anti-creep power-absorbing passes through
The fasteners such as bolt are fixedly connected in mounting base, are conducive to replace anti-creep power-absorbing after an impact, realize anti-creep energy-absorbing member
The interchangeability of part.
In order to improve the structural strength and rigidity that anti-creep energy-absorbing installs interface 3, welded in the body structure of second part 5-2
It is connected to reinforcing steel 20, lightening hole 21 can also be set on reinforcing steel 20, it is maximum under the premise of ensureing structural strength and rigidity
Possibly mitigate weight.Anticreeper installation region is designed as small-sized degree of lip-rounding body structure by the present invention, not only uniform force, and
And it can significantly reduce stress damage degree and effectively prolong the service life.
In the present embodiment, the size of installing port 17 is more than the size of power-absorbing, and power-absorbing can occur swollen after action
The size of installing port 17 being designed and sized to more than power-absorbing is equivalent to and has been reserved for power-absorbing deformation by bulging deformation
Occupied space afterwards can not only reduce damaged condition, and be more advantageous to absorption collision energy, by Deformation control in chassis
The region of end.
As depicted in figs. 1 and 2, in the present embodiment, the both side ends of upper mounting seat 4 protrude from the two side ends of lower mounting seat 5
Portion is fixed with the fixed seat 19 of an inverted L-shaped in the outside of lower mounting seat 5, and fixed seat 19 is formed by steel plate bending, fixed seat 19
Vertical panel 19a is weldingly fixed in the vertical elevation of the edge of 14 side of the second top plate on the outside of second part 5-2 and the second end plate 15,
The height of 19 vertical panel 19a of fixed seat is higher than the height of the second side plate 16, and correspondingly the both side ends of upper mounting seat 4 have upward
The both side ends of the part of recess, upper mounting seat 4 are weldingly fixed on the level board 19b of fixed seat 19, and fixed seat 19 is further
Enhance the overall construction intensity and bearing capacity of mounting base.
After mounting, for the outer surface with edge beam of underframe of fixed seat 19 by being welded to connect, middle part, that is, U-shaped of mounting base is empty
Between part, by being welded to connect, under the premise of ensureing connection structure intensity, can further be dropped with bottom frame floor, longeron
The height of low bottom frame floor, and the occupied space of chassis front end can be saved, it is narrow to meet low floor vehicle chassis space
Small installation requirement.
Anticreeper mounting base in the present invention, the first part 5-1 in upper mounting seat 4, lower mounting seat 5 and second part 5-
2 be all made of be degree of lip-rounding babinet structure, and by hitch install interface 1, drivers' cab installation interface 2 and anticreeper install interface 3
It is integrated in mounting base, not only overall structure is simple, and the structures such as the coupler pocket being separately provided in the prior art are omitted.On and
Mounting base 4 and 5 entirety of lower mounting seat surround a U-shaped space, for installing the structures such as bottom frame floor, not only increase whole knot
Structure intensity and bearing capacity meet the narrow peace of low floor vehicle chassis space but also mounting base integrally occupies little space
Reload request.It is also achieved under the premise of ensureing the mounting base rigidity of structure with bonding strength using the structure of degree of lip-rounding babinet simultaneously
Light-weight design to the maximum extent meets the light-weighted requirements at the higher level of vehicle, is conducive to improve the travel speed of rail vehicle, and
Collision deformation is effectively limited in end underframe region, body structure is plastically deformed, it is ensured that guest room structure do not occur compared with
The living space of large deformation, passenger can be ensured, met Vehicle Passive Safety requirement, can also be effectively improved anticreeper
The problem of mounting base stress concentration, to significantly reduce stress damage degree and effectively prolong the service life.
Quite mounting base can also use one layer of body structure, i.e., other than using above-mentioned bilevel structure
In only retaining lower mounting seat, drivers' cab installation interface 2 is set up directly on to the both side ends of lower mounting seat 5, the glass of drivers' cab
Steel car body is directly fixed on the top of lower mounting seat 5 by gluing knot.
As described above, the plan content in conjunction with given by attached drawing, can derive similar technical solution.In every case it is not de-
Content from technical solution of the present invention, according to the technical essence of the invention to made by above example it is any it is simple modification, etc.
With variation and modification, in the range of still falling within technical solution of the present invention.
Claims (9)
1. a kind of low-floor rail vehicle anticreeper mounting base, it is characterised in that:Mounting base is body structure, in mounting base
It is provided with the hitch installation interface for being fixedly connected with hitch mounting base and the driver for being fixedly connected with drivers' cab car body
Interface is installed in room and the anticreeper for installing anti-creep power-absorbing installs interface, and the mounting base is fixed together
Upper layer and lower layer structure, respectively upper mounting seat and lower mounting seat, the drivers' cab installation interface are arranged in the upper mounting seat,
The whole lateral part by centre along the lateral part that cross-car is arranged and both sides of the upper mounting seat forms, the lower installation
Seat is by the intermediate first part being arranged along cross-car and in first part both sides along the longitudinally disposed second part group of car body
At the hitch installation interface is arranged in the first part, and the anticreeper is provided on each second part
Interface is installed, the first part of the lower mounting seat is divided into upper layer and lower layer structure, and width at the middle and upper levels is less than the width of lower layer,
The structure on upper layer and the second part of both sides surround the space of a U-shaped jointly.
2. a kind of low-floor rail vehicle anticreeper mounting base according to claim 1, it is characterised in that:The upper peace
Dress seat is the body structure that section is the degree of lip-rounding.
3. a kind of low-floor rail vehicle anticreeper mounting base according to claim 1, it is characterised in that:The driver
Room installation interface is arranged in the end of the upper mounting seat both sides, and drivers' cab car body is fixed in upper mounting seat, drivers' cab car body
A columns by fastener be fixed on drivers' cab install interface.
4. a kind of low-floor rail vehicle anticreeper mounting base according to claim 1, it is characterised in that:The lower peace
The upper layer and lower layer structure for filling the first part of seat is the body structure that section is the degree of lip-rounding.
5. a kind of low-floor rail vehicle anticreeper mounting base according to claim 4, it is characterised in that:The hitch
Installation interface is the construction opening being longitudinally extended along car body being opened in lower layer's body structure of the first part, hitch installation
Seat is fixed in the construction opening.
6. a kind of low-floor rail vehicle anticreeper mounting base according to claim 1, it is characterised in that:The lower peace
The second part for filling seat is the body structure of the section degree of lip-rounding, and the anticreeper installation interface is setting in second part longitudinal direction
The installing port and screw seat for fixing anti-creep power-absorbing on the end plate of both ends.
7. a kind of low-floor rail vehicle anticreeper mounting base according to claim 6, it is characterised in that:The installation
The size of mouth is more than the size of the anti-creep power-absorbing.
8. a kind of low-floor rail vehicle anticreeper mounting base according to claim 1, it is characterised in that:The upper peace
The both side ends of dress seat protrude from the both side ends of the lower mounting seat, and an inverted L-shaped is fixed on the outside of the lower mounting seat
Fixed seat, the both side ends of the upper mounting seat are fixed on the level board of the fixed seat.
9. a kind of low-floor rail vehicle anticreeper mounting base according to claim 1, it is characterised in that:In the peace
It is also integrally disposed on dress seat to have hitch ancillary equipment that interface is installed.
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CN201610907444.2A CN106347405B (en) | 2016-10-18 | 2016-10-18 | A kind of low-floor rail vehicle anticreeper mounting base |
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CN201610907444.2A CN106347405B (en) | 2016-10-18 | 2016-10-18 | A kind of low-floor rail vehicle anticreeper mounting base |
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CN106347405B true CN106347405B (en) | 2018-09-07 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107985330B (en) * | 2017-12-04 | 2020-03-24 | 中车株洲电力机车有限公司 | Anti-creep device and rail vehicle |
CN112298264B (en) * | 2020-10-27 | 2022-02-15 | 中车青岛四方机车车辆股份有限公司 | Middle semi-permanent coupler, middle car end collision energy absorption structure and railway vehicle |
CN115179986A (en) * | 2022-08-24 | 2022-10-14 | 中车浦镇阿尔斯通运输***有限公司 | Straddle type single-rail head end chassis frame structure |
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CN206141567U (en) * | 2016-10-18 | 2017-05-03 | 中车青岛四方机车车辆股份有限公司 | Low floor railway anticreeper mount pad for vehicle |
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DE19654993A1 (en) * | 1996-09-10 | 1998-06-25 | Deutsche Waggonbau Ag | Underframe structure and deformation element on rail vehicles |
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Publication number | Priority date | Publication date | Assignee | Title |
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US2709527A (en) * | 1953-01-30 | 1955-05-31 | Entpr Wheel And Car Corp | Double acting spring bumpers |
CN1368448A (en) * | 2000-12-18 | 2002-09-11 | 阿尔斯托姆公司 | Stock pilothouse with endergonic structure for dealing with collision above carriage |
CN102175414A (en) * | 2011-02-18 | 2011-09-07 | 肖锋 | Method for assembling reference train unit collision model |
CN103101553A (en) * | 2013-03-06 | 2013-05-15 | 南车南京浦镇车辆有限公司 | Front-end train assembly with anti-creeping energy-absorbing device |
CN103112471A (en) * | 2013-03-06 | 2013-05-22 | 南车南京浦镇车辆有限公司 | Rigid train front end anticreeper |
CN204605838U (en) * | 2015-03-06 | 2015-09-02 | 长春轨道客车股份有限公司 | There is the high speed vehicle body structure of anti-climbing energy-absorbing device |
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