AU2021269415A1 - Railway vehicle and underframe thereof - Google Patents
Railway vehicle and underframe thereof Download PDFInfo
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- AU2021269415A1 AU2021269415A1 AU2021269415A AU2021269415A AU2021269415A1 AU 2021269415 A1 AU2021269415 A1 AU 2021269415A1 AU 2021269415 A AU2021269415 A AU 2021269415A AU 2021269415 A AU2021269415 A AU 2021269415A AU 2021269415 A1 AU2021269415 A1 AU 2021269415A1
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- bolster
- underframe
- hollow
- mounting base
- vertical
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- 239000000463 material Substances 0.000 claims description 42
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 241000270295 Serpentes Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- B61F1/00—Underframes
- B61F1/08—Details
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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
- B61F1/00—Underframes
-
- 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
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/22—Guiding of the vehicle underframes with respect to the bogies
- B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
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- 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)
- Vibration Prevention Devices (AREA)
- Seats For Vehicles (AREA)
- Vibration Dampers (AREA)
Abstract
A railway vehicle and an underframe thereof are provided according to the present
application, and the underframe includes a bolster and two side sills provided in parallel,
where the bolster is transversely and fixedly connected between the two side sills, and a
vertical damper mounting base and an anti-snake movement damper mounting base are
provided on position of each connecting end portion of the bolster in a longitudinal direction
and are located on both sides of the bolster. Each of the vertical damper mounting base and
the anti-snake movement damper mounting base is fixedly connected to the bolster and the
side sills located at corresponding end portions. In this way, the vertical damper and the anti
snake movement damper can be mounted. In addition, the stress on connection positions of
the bolster and the side sill can be greatly alleviated, and stress concentration is avoided.
Under the premise of increasing the connection strength of the bolster, it is beneficial to
reduce the weight of the bolster to meet the need of vehicle lightweight.
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FIG. 1
Description
1/9
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FIG. 1
[0001] The present application relates to the technical field of vehicle structures, and in particular to a railway vehicle and an underframe thereof.
[0002] Urban rail transit has the characteristics of safety, comfortable, fast, environmental friendly, large capacity and low energy consumption, and has become an important part of urban public transportation. With the development of technology, demand for lightweight and comfort of a vehicle body is getting higher and higher.
[0003] At present, the comfort of a railway vehicle is mainly achieved by mounting different types of dampers on the vehicle, so as to achieve operating stability and smoothness of the vehicle. The mounting of various types of dampers presents a severe test for a subway vehicle body with a very limited mounting space.
[0004] A technical issue to be focused by those skilled in the art is how to arrange the damper to take into account the lightweight and comfort of the vehicle body.
[0005] According to a first aspect, an underframe of a railway vehicle is provided, and the underframe includes a bolster and two side sills provided in parallel, where the bolster is transversely and fixedly connected between the two side sills, and a vertical damper mounting base and an anti-snake movement damper mounting base are provided on position of each connecting end portion of the bolster in a longitudinal direction and are located on two sides of the bolster. Each of the vertical damper mounting base and the anti-snake movement damper mounting base is fixedly connected to the bolster and the side sills located at corresponding end portions.
[0006] The vertical damper mounting base and the anti-snake movement damper mounting base are provided on two ends of the bolster in the underframe provided according to embodiments, and the vertical damper mounting base and the anti-snake movement damper mounting base at each end are connected to the bolster and the side sill. In this way, while realizing the installation of the vertical damper and the anti-snake movement damper, it can greatly alleviate the stress on the connection position of the bolster and the side sill, and avoid stress concentration. Under the premise of increasing the connection strength of the bolster, it is beneficial to reduce the weight of the bolster to meet the need of vehicle lightweight.
[0007] In an embodiment, the side sill is an L-shaped hollow sill including a vertical portion and a horizontal portion bent inward from a bottom wall of the vertical portion. A bottom wall of the end portion of the bolster is supported on the horizontal portion. An end surface of the bolster is welded to a side wall opposite to the vertical portion, and the bolster is a hollow structure.
[0008] In an embodiment, the bolster includes a first hollow profile material and a second hollow profile material both extending transversely. A first connecting plate is fixedly connected between two top walls of the first hollow profile material and the second hollow profile material. A second connecting plate is fixedly connected between two bottom walls of the first hollow profile material and the second hollow profile material. In addition, at least one reinforcing rib is further provided between the first connecting plate and the second connecting plate, and at least part of the reinforcing rib is provided along the longitudinal direction.
[0009] In an embodiment, the underframe further includes an air spring intake pipe welded and fixed to the bolster, where the air spring intake pipe includes a connecting pipe and an inflation head. The inflation head is mounted between the first hollow profile material and the second hollow profile material, and interfaces are formed vertical upward. An opening is provided at a position opposite to an interface of the bolster and the inflation head. The connecting pipe extends longitudinally, and one end of the connecting pipe is connected to a lower end interface of the inflation head, and the other end of the connecting pipe extends to the outside of the first hollow profile material or the second hollow profile material.
[0010] In an embodiment, the anti-snake movement damper mounting base includes an upper support and a lower connecting piece that are fixed together, both of the upper support and the lower connecting piece are provided vertically and both are hollow structures. The upper support is supported on upper surfaces of the vertical portion, the bolster and the lower connecting piece. The lower connecting piece is fixedly supported on the horizontal portion, and a side wall of the lower connecting piece, close to the bolster, is welded to and connected to the bolster.
[0011] In an embodiment, the lower connecting piece includes a hollow body. A partial outer contour of the hollow body is adapted to a shape of a corner position of the side sill, and a part of a top wall of the hollow body, close to the bolster, extends inward to form a transitional arc-shaped plate protruding from the hollow body. A bottom wall of the hollow body extends inward to form a connecting rib protruding from the hollow body, the bottom of the connecting rib is supported on the horizontal portion, and end surfaces of the transitional arc shaped plate and an end portion of the connecting rib, facing towards a side wall of the bolster, are welded and fixed to corresponding side walls of the bolster.
[0012] In an embodiment, the vertical damper includes a hollow structure with a mouth shaped cross section, a bottom wall of the hollow structure is supported on the horizontal portion, and one of side walls of the hollow structure abuts against an inner side wall of the vertical portion. In addition, the hollow structure is adapted to and mounted on a bent portion of the side sill. A part of the hollow structure, far away from the end surface of the bolster, further has a first wing plate and a second wing plate that both extend in the longitudinal direction. The first wing plate is adapted to and abuts against the side sill, and the second wing plate hangs in the air.
[0013] In an embodiment, the underframe further includes a draft sill and an end sill, where the end sill is fixedly connected to end portions of two side sills transversely, and the draft sill includes a lower cover plate, a web and a vehicle coupler mounting base. The lower cover plate and the web are both T-shaped structures, and the lower cover plate and a vertical plate of the web are relatively welded to form an I-shaped structure. The vehicle coupler mounting base is fixedly mounted on a front end of the I-shaped structure, the front end of the vehicle coupler mounting base is fixedly connected to the end sill, and a rear end of the I-shaped structure is fixed to the bolster; or/and, the underframe further includes a bottom plate, where the bottom plate is supported on the side sill, and the bolster is located below the bottom plate.
[0014] In an embodiment, the bolster is a hollow structure, and at least two reinforcing vertical plates extending longitudinally are further provided inside the hollow structure of the bolster, and a wire passage is formed between the two reinforcing vertical plates extending longitudinally.
[0015] According to a second aspect, a railway vehicle is provided, and the railway vehicle includes a vehicle body, and the underframe as described in any one of the first aspect or embodiments above, where the vehicle body is mounted on the underframe through the vertical damper and the anti-snake movement damper.
[0016] The railway vehicle provided according to the present application includes the underframe described in any one of the above embodiments, so the railway vehicle also has the above technical effects of the underframe.
[0017] FIG. 1 is a partial structural view of an underframe in an embodiment of the present application;
[0018] FIG. 2 is a partial structural view of a component formed by assembly of a draft sill and a bolster in an embodiment of the present application;
[0019] FIG. 3 is a schematic top view of a component formed by assembly of the draft sill and the bolster in an embodiment of the present application;
[0020] FIG. 4a is a schematic front view of the draft sill in an embodiment of the present application;
[0021] FIG. 4b is a schematic top view of FIG. 4a;
[0022] FIG. 4c is a schematic partial cross-sectional view of FIG. 4a;
[0023] FIG. 5a is a schematic structural view of a relative mounting relationship of the bolster and a bottom plate in an embodiment of the present application;
[0024] FIG. 5b is a schematic partial view of a position where the bolster is provided with a reinforcing vertical plate in an embodiment of the present application;
[0025] FIG. 6a is a schematic cross-sectional view of a position where an air spring intake pipe is provided in an embodiment of the present application;
[0026] FIG. 6b is a schematic perspective view of the air spring intake pipe in an embodiment of the present application;
[0027] FIG. 7a is a partial enlarged view of a mounting position of an anti-snake movement damper mounting base in an embodiment of the present application;
[0028] FIG. 7b is a schematic cross-sectional view of a partial position shown in FIG. 7a;
[0029] FIG. 7c is a schematic partial view of a cross section of a side sill in an embodiment of the present application;
[0030] FIG. 8a is a schematic cross-sectional view of a mounting position of a vertical damper mounting base in an embodiment of the present application;
[0031] FIG. 8b is a schematic perspective view of the vertical damper mounting base in an embodiment of the present application.
[0032] The one-to-one correspondence between the reference numerals and component names in FIG. 1 to FIG. 8b is as follows:
[0033] 1 draft sill, 11 vertical plate,
[0034] 12 lower cover plate, 13 vehicle coupler mounting base,
[0035] 2 bolster, 21 profile material,
[0036] 22 first connecting plate, 22' second connecting plate,
[0037] 23 air spring intake pipe, 231 connecting pipe,
[0038] 232 inflation head, 2a bolster center wire passage hole,
[0039] 24 reinforcing vertical plate, 3 side sill,
[0040] 3a recess cavity, 4 vertical damper mounting base,
[0041] 4a second wing plate, 4b first wing plate,
[0042] 5 rivet, 6 vertical damper connecting base,
[0043] 7 anti-snake movement damper mounting base, 71 upper support,
[0044] 71a chute, 72 lower connecting piece,
[0045] 72a transitional arc-shaped plate, 72b connecting rib plate,
[0046] 8 bottom plate, 9 end sill.
[0047] In order to provide those skilled in the art a better understanding of the solutions of the present application, the present application is described hereinafter in further detail in conjunction with the drawings and embodiments.
[0048] Referring to FIG. 1 to FIG. 8b, FIG. 1 is a partial structural view of an underframe in an embodiment of the present application; FIG. 2 is a partial structural view of a component formed by assembly of a draft sill and a bolster in an embodiment of the present application; FIG. 3 is a schematic top view of a component formed by assembly of the draft sill and the bolster in an embodiment of the present application; FIG. 4a is a schematic front view of the draft sill in an embodiment of the present application; FIG. 4b is a schematic top view of FIG. 4a; FIG. 4c is a schematic partial cross-sectional view of FIG. 4a; FIG. 5a is a schematic structural view of a relative mounting relationship of the bolster and a bottom plate in an embodiment of the present application; FIG. 5b is a schematic partial view of a position where the bolster is provided with a reinforcing vertical plate in an embodiment of the present application; FIG. 6a is a schematic cross-sectional view of a position where an air spring intake pipe is provided in an embodiment of the present application; FIG. 6b is a schematic perspective view of the air spring intake pipe in an embodiment of the present application; FIG. 7a is a partial enlarged view of a mounting position of an anti-snake movement damper mounting base in an embodiment of the present application; FIG. 7b is a schematic cross sectional view of a partial position shown in FIG. 7a; FIG. 7c is a schematic partial view of a cross section of a side sill in an embodiment of the present application; FIG. 8a is a schematic cross-sectional view of a mounting position of a vertical damper mounting base in an embodiment of the present application; FIG. 8b is a schematic perspective view of the vertical damper mounting base in an embodiment of the present application.
[0049] An underframe of a railway vehicle is provided according to the present application. The underframe includes one bolster 2 and two parallel side sills 3. A vertical damper mounting base 4 and an anti-snake movement damper mounting base 7 are provided on position of each connecting end portion of the bolster 2. The vertical damper mounting base 4 and the anti-snake movement damper mounting base 7 are provided in a longitudinal direction and are located on both sides of the bolster 2. It should be noted that the longitudinal direction herein refers to the length direction of a vehicle body, and the transverse direction refers to the width direction of the vehicle body.
[0050] That is, both ends of the bolster 2 are provided with the vertical damper mounting base 4 and the anti-snake movement damper mounting base 7, where two vertical damper mounting bases are provided on the same side of the bolster 2, and can be arranged symmetrically with respect to a central longitudinal plane of a bogie. Similarly, the number of the anti-snake movement damper mounting base 7 is also two, both of which are located on the same side of the bolster 2 and are arranged symmetrically with respect to the central longitudinal plane of the bogie. In this way, the mounted vertical dampers and the mounted anti-snake movement dampers are further arranged symmetrically with respect to the central longitudinal plane, which is beneficial to the overall force balance.
[0051] Each of the vertical damper mounting base 4 and the anti-snake movement damper mounting base 7 is fixedly connected to the bolster 2 and the side sills 3 located at corresponding end portions. That is, the vertical damper mounting base 4 is fixedly connected to the side sill 3 and the bolster 2 connected to the side sill 3, and the anti-snaking damper mounting base 7 is also fixedly connected to the side sill 3 and the bolster 2 connected to the side sill 3.
[0052] In the present application, the vertical damper mounting base 4 and the anti-snake movement damper mounting base 7 are provided on two ends of the bolster 2 in the underframe provided according to the present application, and the vertical damper mounting base 4 and the anti-snake movement damper mounting base 7 at each end are connected to the bolster 2 and the side sill 3. In this way, the vertical damper and the anti-snake movement damper can be mounted. In addition, the stress on connection positions of the bolster 2 and the side sill 3 can be greatly alleviated, and stress concentration is avoided. Under the premise of increasing the connection strength of the bolster 2, it is beneficial to reduce the weight of the bolster 2 to meet the need of vehicle lightweight.
[0053] In a specific embodiment, the side sill 3 may be embodied as an L-shaped hollow sill including a vertical portion and a horizontal portion bent inward from a bottom wall of the vertical portion. The inward here refers to a side close to the central longitudinal plane of the vehicle. The vertical portion and the horizontal portion of the side sill 3 may both be embodied as a hollow sill, and the side sill 3 has a recess cavity 3a as shown in the figure. A bottom wall of the end portion of the bolster 2 is supported on the horizontal portion. An end surface is welded to a side wall opposite to the vertical portion, and the bolster 2 is a hollow structure.
[0054] The end portion of the bolster 2 is supported on the horizontal portion, which is beneficial to increase the contact area between the bolster 2 and the underframe, and improve the stability of the fixation of the bolster 2. The side sill 3 and the bolster 2 are both hollow structures, which further reduces their weight and realizes a lightweight design of the vehicle.
[0055] After the bolster 2 is fixed, an upper surface of the bolster 2 may be flush with an upper surface of the vertical portion. Of course, the upper surface of the bolster 2 may also be slightly lower than the upper surface of the vertical portion.
[0056] The bolster 2 with hollow structure may have various structures, A specific implementation of the bolster 2 is given below.
[0057] In a specific embodiment, the bolster 2 may include a first hollow profile material and a second hollow profile material both extending transversely, and the two profile materials are spaced apart. The first hollow profile material and the second hollow profile material may be embodies as two profile materials 21 with the same structure, so that the force is more uniform. Of course, the structure of the first hollow profile material and the second hollow profile material may also be different. The first hollow profile material and the second hollow profile material with the same structure is taken as an example to continue to introduce the technical solution.
[0058] A first connecting plate 22 is fixedly connected between two top walls of the first hollow profile material and the second hollow profile material. A second connecting plate 22' is fixedly connected between two bottom walls of the first hollow profile material and the second hollow profile material. In addition, at least one reinforcing rib is further provided between the first connecting plate and the second connecting plate, and at least part of the reinforcing rib is provided along the longitudinal direction. That is, the first hollow profile material, the second hollow profile material, the first connecting plate 22 and the second connecting plate 22' together define an intermediate cavity structure, and reinforcing ribs are added to the interior of the intermediate cavity structure to improve the use intensity of the intermediate cavity structure.
[0059] The reinforcing rib may be embodied as a vertical plate, that is, the reinforcing rib is a reinforcing vertical plate 24 to increase the longitudinal force performance of the bolster 2.
[0060] In the above embodiments, the underframe may further include an air spring intake pipe 23 welded to the bolster 2. The air spring intake pipe 23 includes a connecting pipe 231 and an inflation head 232, which may be formed as an integral structure. Of course, the connecting pipe 231 and the inflation head 232 may be individually processed and form components by welding or other processing means. The inflation head 232 may be welded to the bolster 2.
[0061] In the present application, the inflation head 232 is mounted between the first hollow profile material and the second hollow profile material, and upper interfaces are formed vertical upward. An opening is provided at a position opposite to an upper interface of the bolster 2 and the inflation head 232, so as to connect the external connecting pipe 231 to the upper interface of the inflation head 232. The connecting pipe 231 extends longitudinally, and one end of the connecting pipe 231 is connected to a lower interface of the inflation head 232, and the other end of the connecting pipe 231 extends to the outside of thefirst hollow profile material or the second hollow profile material, so as to improve the convenience of connecting the connecting pipe 231 to an external pipeline.
[0062] Correspondingly, the bolster 2 is provided with an air spring mounting surface.
[0063] In a specific embodiment, the anti-snake movement damper mounting base 7 includes an upper support 71 and a lower connecting piece 72 that are fixed together, and both of the upper support 71 and the lower connecting piece 72 are provided vertically and are hollow structures. The upper support 71 may be provided in a mounting structure for cooperating and connecting with the anti-snake movement damper, for example, the mounting structure is a longitudinal chute 71a with an opening facing upward. The upper support 71 is supported on upper surfaces of the vertical portion, the bolster 2 and the lower connecting piece, that is, the upper support 71 is not supported solely on one component, it is supported on the side sill 3, the bolster 2 and the lower connecting piece 72. In this way, excessive local stress on a single component can be avoided, and the overall stress performance of the structure can be improved.
[0064] In addition, the lower connecting piece 72 in the above embodiment is fixedly supported on the horizontal portion of the side sill 3, and a side wall of the lower connecting piece 72, close to the bolster 2, is welded to the bolster 2. The welding connection between the lower connecting piece 72 and the bolster 2 can increase the connection strength of the bolster 2, and further reduce the width of the bolster 2.
[0065] Further, the lower connecting piece 72 in the above embodiment includes a hollow body, and partial outer contour of the hollow body is adapted to the shape of a corner position of the side sill 3, that is, the shape of the connecting position of the vertical portion and the horizontal portion is adapted to the outer contour of the hollow body, the lower connecting piece 72 can be fitted to and mounted on the side sill 3. A part of a top wall of the hollow body, close to the bolster 2, extends inward to form a transitional arc-shaped plate protruding from the hollow body. A bottom wall of the hollow body extends inward to form a connecting rib 72b protruding from the hollow body, the bottom of the connecting rib 72b is supported on the horizontal portion, and end surfaces of the transitional arc-shaped plate and an end portion of the connecting rib, facing towards a side wall of the bolster, are welded to corresponding side walls of the bolster 2.
[0066] The transitional arc-shaped plate 72a and the connecting rib 72b can increase the area fixed to the bolster 2 and improve the mounting strength and stability of components such as the bolster 2. The connecting rib 72b further increases the supporting area of the lower connecting piece 72 and the horizontal portion, and improves the supporting stability.
[0067] In the above embodiments, the vertical damper may include a hollow structure with a mouth-shaped cross section, a bottom wall of the hollow structure is supported on the horizontal portion, and one of side walls of the hollow structure abuts against an inner side wall of the vertical portion. In addition, partial outer contour of the hollow structure is adapted to and mounted on a bent portion of the side sill 3. A part of the hollow structure, far away from the end surface of the bolster 2, further has a first wing plate 4b and a second wing plate 4a that both extend in the longitudinal direction. The first wing plate 4b is adapted to and abuts against the side sill 3, and the second wing plate 4a hangs in the air.
[0068] The first wing plate 4b and the second wing plate 4a are provided on two sides of the vertical damper, which can reduce the impact of sudden changes in stiffness.
[0069] A vertical damper connecting base 6 can be fixed to the upper surface of the vertical damper mounting base 4 by rivets 5.
[0070] Protruding lengths of the first wing plate 4b and the second wing plate 4a can be determined according to specific usage conditions, and are not limited herein.
[0071] In the above embodiments, the underframe may further include a draft sill 1 and an end sill 9, where the end sill 9 isfixedly connected to end portions of two side sills 3 transversely, and the draft sill 1 includes a lower cover plate 12, a web and a vehicle coupler mounting base 13. The lower cover plate 12 and the web are both T-shaped structures, and the lower cover plate 12 and a vertical plate 11 of the web are relatively welded to form an I shaped structure. The vehicle coupler mounting base 13 is fixedly mounted on a front end of the I-shaped structure, the front end of the vehicle coupler mounting base 13 is fixedly connected to the end sill 9, and a rear end of the I-shaped structure is fixed to the bolster 2.
[0072] The lower cover plate 12 and the web in the above embodiment can be processed by "I"-shaped profile materials, which can be up and down rotationally symmetrical during processing, and one raw material can be used to process two workpiece structures.
[0073] The draft sill 1 of this structure adopts a single-layer structure, which can carry a huge longitudinal load, and effectively reduces the weight of the vehicle body, so the vehicle is more energy-saving and environmentally friendly.
[0074] The end sill 9 may also be embodied as a hollow structure, which is not specifically limited herein.
[0075] In the above embodiments, the underframe may further include a bottom plate 8, the bottom plate 8 is supported on the side sill 3, and the bolster 2 is located below the bottom plate 8.
[0076] In another specific embodiment, the bolster 2 of the underframe of the railway vehicle is a hollow structure, and at least two reinforcing vertical plates 24 extending longitudinally are further provided inside the hollow structure of the bolster 2, and a wire passage is formed between the two reinforcing vertical plates 24 extending longitudinally.
[0077] A railway vehicle is further provided according to the present application, where the railway vehicle includes the vehicle body and the underframe of the railway vehicle of any of the above embodiments. The vehicle body is mounted on the underframe through the vertical damper and the anti-snake movement damper. Each bogie is provided with two vertical damper mounting bases 4 and two anti-snake movement damper mounting bases 7. The two vertical damper mounting bases 4 are symmetrical about the central longitudinal plane of the bogie, and the two anti-snake movement damper mounting bases 7 are also symmetrical about the central longitudinal plane of the bogie. Correspondingly, the vehicle body is supported on the bogie through two vertical dampers and two anti-snake movement dampers.
[0078] Specific structures of the vertical damper mounting base 4 and the anti-snake movement damper mounting base 7 can be determined according to the specific structures of the vertical damper and the anti-snake movement damper. Cooperating structure of the vertical damper mounting base 4 and the vertical damper, and cooperating structure of the anti-snake movement damper mounting base 7 and the anti-snake movement damper will not be described herein, which does not hinder those skilled in the art in understanding the technical solutions herein.
[0079] The railway vehicle provided according to the present application includes the underframe described in any of the above embodiments, so the railway vehicle also has the above technical effects of the underframe.
[0080] Other structures of the railway vehicle will not be described in detail herein, reference may be made to the conventional technology.
[0081] The railway vehicle and the underframe thereof provided according to the present application have been described in detail above. Specific examples are used in this specification to illustrate the principle and implementation of the present application. The description of the above embodiments is only used to facilitate understanding of the method and core concept of the present application. It should be noted that, for those skilled in the art, many improvements and modifications may be further made to the present disclosure without departing from the principle of the present disclosure, and these improvements and modifications also fall within the protection scope of claims of the present disclosure.
[0082] Reference to any prior art in the specification is not an acknowledgement or suggestion that this prior art forms part of the common general knowledge in any jurisdiction or that this prior art could reasonably be expected to be combined with any other piece of prior art by a skilled person in the art.
[0083] By way of clarification and for avoidance of doubt, as used herein and except where the context requires otherwise, the term "comprise" and variations of the term, such as "comprising", "comprises" and "comprised", are not intended to exclude further additions, components, integers or steps.
Claims (10)
1. An underframe of a railway vehicle, comprising a bolster and two side sills provided in parallel, wherein the bolster is transversely and fixedly connected between the two side sills; a vertical damper mounting base and an anti-snake movement damper mounting base are provided on position of each connecting end portion of the bolster in a longitudinal direction and are located on both sides of the bolster, and each of the vertical damper mounting base and the anti-snake movement damper mounting base is fixedly connected to the bolster and the side sills located at corresponding end portions.
2. The underframe of a railway vehicle according to claim 1, wherein the side sill is an L-shaped hollow sill comprising a vertical portion and a horizontal portion bent inward from a bottom wall of the vertical portion; a bottom wall of the end portion of the bolster is supported on the horizontal portion, an end surface of the bolster is welded to a side wall opposite to the vertical portion, and the bolster is a hollow structure.
3. The underframe of a railway vehicle according to claim 2, wherein the bolster comprises a first hollow profile material and a second hollow profile material both extending transversely; a first connecting plate is fixedly connected between two top walls of the first hollow profile material and the second hollow profile material, and a second connecting plate is fixedly connected between two bottom walls of the first hollow profile material and the second hollow profile material; in addition, at least one reinforcing rib is further provided between the first connecting plate and the second connecting plate, and at least part of the reinforcing ribs are provided along the longitudinal direction.
4. The underframe of a railway vehicle according to claim 3, further comprising an air spring intake pipe welded to the bolster, wherein the air spring intake pipe comprises a connecting pipe and an inflation head, the inflation head is mounted between the first hollow profile material and the second hollow profile material, and interfaces are formed vertical upward; an opening is provided at a position opposite to an interface of the bolster and the inflation head; the connecting pipe extends longitudinally, and one end of the connecting pipe is connected to a lower interface of the inflation head, and the other end of the connecting pipe extends to the outside of the first hollow profile material or the second hollow profile material.
5. The underframe of a railway vehicle according to claim 2, wherein the anti-snake movement damper mounting base comprises an upper support and a lower connecting piece that are fixed together, both of the upper support and the lower connecting piece are provided vertically and are hollow structures; the upper support is supported on upper surfaces of the vertical portion, the bolster and the lower connecting piece, the lower connecting piece is fixedly supported on the horizontal portion, and a side wall of the lower connecting piece, close to the bolster, is welded to the bolster.
6. The underframe of a railway vehicle according to claim 5, wherein the lower connecting piece comprises a hollow body, a partial outer contour of the hollow body is adapted to a shape of a corner position of the side sill, and a part of a top wall of the hollow body, close to the bolster, extends inward to form a transitional arc-shaped plate protruding from the hollow body; a bottom wall of the hollow body extends inward to form a connecting rib protruding from the hollow body, the bottom of the connecting rib is supported on the horizontal portion, and end surfaces of the transitional arc-shaped plate and an end portion of the connecting rib, facing toward a side wall of the bolster, are welded to corresponding side walls of the bolster.
7. The underframe of a railway vehicle according to claim 2, wherein the vertical damper comprises a hollow structure with a mouth-shaped cross section, a bottom wall of the hollow structure is supported by the horizontal portion, and one of side walls of the hollow structure abuts against an inner side wall of the vertical portion; in addition, the hollow structure is adapted to and mounted on a bent portion of the side sill, a part of the hollow structure, far away from the end surface of the bolster, further has a first wing plate and a second wing plate that both extend in the longitudinal direction; the first wing plate is adapted to and abuts against the side sill, and the second wing plate hangs in the air.
8. The underframe of a railway vehicle according to claim 2, further comprising a draft sill and an end sill, wherein the end sill is fixedly connected to end portions of two side sills transversely, and the draft sill comprises a lower cover plate, a web and a vehicle coupler mounting base; the lower cover plate and the web are both T-shaped structures, and the lower cover plate and a vertical plate of the web are relatively welded to form an I-shaped structure; the vehicle coupler mounting base is fixedly mounted on a front end of the I-shaped structure, the front end of the vehicle coupler mounting base is fixedly connected to the end sill, and a rear end of the I-shaped structure is fixed to the bolster;
or/and, the underframe further comprises a bottom plate, wherein the bottom plate is supported on the side sill, and the bolster is located below the bottom plate.
9. The underframe of a railway vehicle according to claim 8, wherein the bolster is a hollow structure, and at least two reinforcing vertical plates extending longitudinally are further provided inside the hollow structure of the bolster, and a wire passage is formed between the two reinforcing vertical plates extending longitudinally.
10. A railway vehicle, comprising a vehicle body, wherein the railway vehicle further comprises the underframe of a railway vehicle according to any one of claims 1 to 9, and the vehicle body is mounted on the underframe through the vertical damper and the anti-snake movement damper.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786602.4A CN113291342B (en) | 2021-07-12 | 2021-07-12 | Rail vehicle and chassis thereof |
| CN202110786602.4 | 2021-07-12 |
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| AU2021269415A1 true AU2021269415A1 (en) | 2023-02-02 |
| AU2021269415B2 AU2021269415B2 (en) | 2023-09-28 |
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Country Status (3)
| Country | Link |
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| CN (1) | CN113291342B (en) |
| AU (1) | AU2021269415B2 (en) |
| WO (1) | WO2023284215A1 (en) |
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| CN113291342B (en) * | 2021-07-12 | 2023-05-30 | 中车长春轨道客车股份有限公司 | Rail vehicle and chassis thereof |
| CN113859293B (en) * | 2021-11-22 | 2022-12-13 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle and sleeper beam |
| CN114312887B (en) * | 2022-01-05 | 2023-08-04 | 中车青岛四方机车车辆股份有限公司 | Car body underframe and rail vehicle |
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| JP3868203B2 (en) * | 2000-11-07 | 2007-01-17 | 近畿車輌株式会社 | Pillow beam / floor connection structure in railcar frame |
| JP2012011860A (en) * | 2010-06-30 | 2012-01-19 | Toshiba Corp | Device and method for controlling vibration of railway vehicle |
| CN102107349B (en) * | 2010-11-23 | 2012-10-03 | 南车南京浦镇车辆有限公司 | Process for producing modular sleeper beam for railway carriage |
| CN202115541U (en) * | 2011-06-17 | 2012-01-18 | 长春轨道客车股份有限公司 | Integrated sleeper beam of bogie for high speed motor train unit |
| CN202413829U (en) * | 2011-10-30 | 2012-09-05 | 南车青岛四方机车车辆股份有限公司 | Railway vehicle bolster |
| US8739705B2 (en) * | 2012-04-05 | 2014-06-03 | National Steel Car Limited | Autorack railroad car and underframe therefor |
| CN202624250U (en) * | 2012-04-24 | 2012-12-26 | 南车南京浦镇车辆有限公司 | Air spring air intake seat |
| JP5918691B2 (en) * | 2012-12-27 | 2016-05-18 | 川崎重工業株式会社 | Railcar frame structure |
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| CN105346551A (en) * | 2015-11-30 | 2016-02-24 | 长春轨道客车股份有限公司 | High-speed train connecting sleeper beam |
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| CN113276897B (en) * | 2021-06-22 | 2022-12-09 | 中车株洲电力机车有限公司 | Subway vehicle |
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2021
- 2021-07-12 CN CN202110786602.4A patent/CN113291342B/en active Active
- 2021-11-19 WO PCT/CN2021/131671 patent/WO2023284215A1/en active Application Filing
- 2021-11-19 AU AU2021269415A patent/AU2021269415B2/en active Active
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| AU2021269415B2 (en) | 2023-09-28 |
| WO2023284215A1 (en) | 2023-01-19 |
| CN113291342B (en) | 2023-05-30 |
| CN113291342A (en) | 2021-08-24 |
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