Vehicle body frame and railway vehicle

Abstract

The present application relates to the field of rail vehicle technology, and provides a vehicle body underframe and a rail vehicle. The vehicle body underframe comprises a middle underframe and a pair of end underframes. The middle underframe comprises a pair of side beams, a plurality of cross beams, a hanging seat and a support frame. The pair of side beams and at least two cross beams are provided with the hanging seat, and the support frame is arranged on the cross beam. The pair of end underframes are respectively arranged on both sides of all the cross beams along the longitudinal direction. The end underframe comprises at least two levels of force transmission components. Each level of force transmission component is distributed along the longitudinal direction and connected with the side beam. Each level of force transmission component can transmit the longitudinal load to the pair of side beams and the next level of force transmission component or the cross beam. The side beam and the cross beam jointly bear the load of the oil tank. The support frame bears the load of the generator set. The cross beam lifts the support frame and the generator set, thereby improving the vertical bearing strength of the vehicle body underframe. The multi-level force transmission component is used to transmit and attenuate the longitudinal load, thereby improving the longitudinal bearing strength of the vehicle body underframe. The bearing strength of the vehicle body underframe in the longitudinal and vertical directions is comprehensively improved.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and provides a car body chassis and a rail vehicle. Background Technology

[0002] The chassis of a rail vehicle must withstand both the large longitudinal compressive load of the coupler and the vertical load from the generator set, fuel tank, and passengers. The combined working conditions of longitudinal and vertical loads constitute the most demanding conditions, placing extremely high demands on the strength design of the chassis.

[0003] Some rail vehicle chassis need to withstand a longitudinal coupler compressive load of no less than 363 tons without permanent deformation or yielding, and also require the installation of two generator sets of more than 5 tons each and fuel tanks of more than 8 tons. However, some existing chassis, such as those of heavy-duty locomotives, can only withstand a longitudinal coupler compressive load of about 200 tons, which is only 55% of the required value, and their vertical load capacity is also relatively small, failing to meet the usage requirements.

[0004] Therefore, how to improve the load-bearing strength of the vehicle chassis in the longitudinal and vertical directions has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a vehicle chassis frame to solve the problem that existing vehicle chassis frames do not meet usage requirements, and to improve the load-bearing strength of the vehicle chassis frame in the longitudinal and vertical directions.

[0006] A first aspect of the present invention provides a vehicle chassis frame, comprising:

[0007] The central base frame includes a pair of side beams, a plurality of crossbeams disposed between the pair of side beams, a hanging seat for suspending the fuel tank, and a support frame for supporting the generator set. The hanging seat is disposed on the pair of side beams and at least two of the crossbeams, and the support frame is disposed on the crossbeams.

[0008] A pair of end frames are respectively disposed on both sides of all the crossbeams along the longitudinal direction. The end frames include at least two levels of force transmission components. Each level of the force transmission components is distributed along the longitudinal direction and is fixedly connected to a pair of the side beams. Each level of the force transmission components is configured to transmit the longitudinal load to the pair of side beams and the next level of force transmission components or the crossbeams.

[0009] According to one embodiment of the present invention, both the side beam and the crossbeam for mounting the hanging seat have a first support portion and a second support portion, the first support portion and the second support portion being distributed at a vertical interval;

[0010] The hanging base includes:

[0011] The second support portion of the hanging base body is provided with a mounting hole through which the hanging base body passes;

[0012] A raised edge is formed on the periphery of the hanging base body, and the raised edge overlaps the side of the second support portion near the first support portion.

[0013] According to one embodiment of the present invention, it further includes:

[0014] A support base is disposed between the hanging seat and the first support part, and the two ends of the support base along the vertical direction respectively abut against the hanging seat and the first support part.

[0015] According to one embodiment of the present invention, the side beam includes:

[0016] Both the inner and outer side beams have a first support portion, a second support portion, and a first side support portion. The first side support portion is disposed between the first support portion and the second support portion, and the inner side beam is located inside the outer side beam.

[0017] A limiting member is disposed between the first side upright portion of the inner side beam and the first side upright portion of the outer side beam.

[0018] According to one embodiment of the present invention, the end base frame includes four stages of force transmission components, each of which is fixedly connected to a pair of side beams;

[0019] In the fourth-level force transmission components, adjacent components are fixedly connected, and the component closest to the crossbeam in the fourth-level force transmission components is fixedly connected to the crossbeam.

[0020] According to one embodiment of the present invention, the crossbeam comprises:

[0021] The first crossbeam is provided with at least one, the first crossbeam includes a third support part, a fourth support part and a pair of second side uprights, the third support part and the fourth support part are distributed vertically, the pair of second side uprights are disposed between the third support part and the fourth support part and are distributed at intervals along the longitudinal direction, the dimension of the third support part along the longitudinal direction is greater than the distance between the pair of second side uprights;

[0022] And / or, a second crossbeam, having at least one, wherein the cross-sectional shape of the second crossbeam along the longitudinal direction is C-shaped.

[0023] According to one embodiment of the present invention, it further includes:

[0024] A floor is provided on the middle base frame and the end base frame, the floor being located on the side of the middle base frame and the end base frame away from the hanging seat.

[0025] According to one embodiment of the present invention, the floor comprises:

[0026] A first floor is disposed on the end base frame, and each end base frame is provided with one first floor;

[0027] A second floor is disposed between the central base frame and the supporting frame.

[0028] According to one embodiment of the present invention, at least the second floor has a corrugated cross-section along the transverse direction.

[0029] A second aspect of the present invention provides a rail vehicle including the aforementioned chassis frame.

[0030] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0031] According to a first aspect of the present invention, a vehicle chassis includes a central chassis and a pair of end chassis. The central chassis includes a pair of side beams, multiple crossbeams, a suspension mount, and a support frame. The multiple crossbeams are disposed between the pair of side beams, and the ends of the crossbeams are fixedly connected to the side beams. The suspension mount and the support frame are distributed vertically on both sides of the central chassis. The suspension mount is used to suspend the fuel tank, and the support frame is used to support the generator set. Suspension mounts are provided on the pair of side beams and at least two crossbeams, and the side beams and crossbeams jointly bear the suspension load of the fuel tank. The support frame is disposed on the crossbeams, and the support frame bears the load of the generator set, while the crossbeams support the support frame and the generator set. The arrangement of the suspension mount and the support frame improves the vertical load-bearing strength of the vehicle chassis. The pair of end chassis are respectively disposed on both sides of all crossbeams along the longitudinal direction, and are used to bear the longitudinal coupler compressive load. The end underframe includes at least two levels of force transmission components. Each level of force transmission component is distributed longitudinally and is fixedly connected to a pair of side beams. Each level of force transmission component can transfer longitudinal loads to the pair of side beams and the next level of force transmission component or crossbeam. The longitudinal load is transmitted topologically on the vehicle body underframe and attenuates at each stage of transmission, reducing the load transmitted to the side beams. This allows the vehicle body underframe to withstand larger longitudinal loads and improves its longitudinal load-bearing strength. With this configuration, the vehicle body underframe provided by this invention, combining the installation structure of the fuel tank and generator set with the structural design of the end underframe, greatly improves the longitudinal and vertical load-bearing strength of the vehicle body underframe, enabling it to withstand extremely large loads.

[0032] The rail vehicle provided according to the second aspect of the present invention has strong longitudinal and vertical load-bearing capacity, which is conducive to promoting the development of heavy-duty locomotives. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this invention or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the vehicle chassis structure provided in an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 Enlarged view of I in the middle;

[0036] Figure 3 This is a structural schematic diagram of the vehicle chassis (hidden floor) provided in an embodiment of the present invention;

[0037] Figure 4 yes Figure 3 Enlarged view of X in the middle;

[0038] Figure 5 yes Figure 3 Enlarged view of Y in the middle;

[0039] Figure 6 This is a schematic diagram of the installation structure of the hanging bracket provided in an embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the connection structure between the hanging seat and the side beam provided in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the end frame structure provided in an embodiment of the present invention.

[0042] Figure label:

[0043] 1. Central base frame; 2. Side beam; 3. Hanging seat; 4. Support frame; 5. End base frame; 6. First support part; 7. Second support part; 8. Hanging seat body; 9. Protruding edge; 10. Support seat; 11. Inner side beam; 12. Outer side beam; 13. First crossbeam; 14. Second crossbeam; 15. Floor; 16. First floor; 17. Second floor; 18. Pillar beam; 19. Intermediate beam; 20. Primary force transmission component; 21. Secondary force transmission component; 22. Tertiary force transmission component; 23. Quaternary force transmission component; 24. Buffer beam; 25. First traction beam; 26. Second traction beam; 27. Stop beam; 28. Third traction beam; 29. ​​Diagonal tie beam; 30. First irregular plate; 31. Second irregular plate; 32. Third irregular plate; 33. Longitudinal beam. Detailed Implementation

[0044] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0047] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] The following is combined Figures 1 to 8 The vehicle chassis of the present invention is described.

[0050] like Figures 1 to 8 As shown, a first aspect of the present invention provides a vehicle chassis, including a central chassis 1 and a pair of end chassis 5.

[0051] For ease of explanation, the length of the vehicle chassis is considered to be longitudinal, referring to... Figure 1 The direction indicated by 'y' is considered to be the lateral direction of the vehicle chassis width, with reference to... Figure 1 The direction indicated by x in the middle is considered as vertical, taking the load-bearing direction of the vehicle chassis as a reference. Figure 1 The directions indicated by z are perpendicular to each other in the three directions of longitudinal, transverse, and vertical.

[0052] Specifically, the central base frame 1 includes a pair of side beams 2, multiple crossbeams, hanging seats 3, and a support frame 4. The pair of side beams 2 are distributed laterally at intervals, and each side beam 2 extends longitudinally. Multiple crossbeams are arranged between the pair of side beams 2, and the multiple crossbeams are distributed longitudinally at intervals, with the ends of the crossbeams fixedly connected to the side beams 2 to form a frame structure.

[0053] The hanging base 3 and the support frame 4 are distributed vertically on both sides of the central base frame 1. The hanging base 3 is used to suspend the oil tank, and the support frame 4 is used to support the generator set.

[0054] Hanging seats 3 are provided on a pair of side beams 2 and at least two crossbeams, so that the side beams 2 and crossbeams can jointly bear the hanging load of the oil tank. Hanging seats 3 can be installed on a pair of side beams 2 and two crossbeams.

[0055] The structure of support frame 4 is as follows Figure 2 As shown, the support frame 4 is set on the crossbeam. The support frame 4 bears the load of the generator set, and the crossbeam supports the support frame 4 and the generator set.

[0056] The arrangement of the integrated suspension bracket 3 and support frame 4 improves the vertical load-bearing strength of the vehicle body chassis.

[0057] A pair of end frames 5 are respectively installed on both sides of all crossbeams along the longitudinal direction to bear the longitudinal coupler compressive load. The end frames 5 include at least two stages of force transmission components, each of which is distributed along the longitudinal direction and is fixedly connected to a pair of side beams 2.

[0058] Specifically, among all the crossbeams of the central base frame 1, the crossbeams located at the edges along the longitudinal direction have a gap between their ends and the ends of the side beams 2. That is, a certain installation space is reserved between the ends of a pair of side beams 2 for installing the end base frame 5. The various levels of force transmission components of the end base frame 5 are distributed on both sides of all the crossbeams along the longitudinal direction and are located between a pair of side beams 2.

[0059] In the force transmission components at each level, along the direction gradually approaching the crossbeam, they are, in order: primary force transmission component 20, secondary force transmission component 21, tertiary force transmission component 22, quaternary force transmission component 23…

[0060] Each stage of the force transmission component can transfer the longitudinal load to a pair of side beams 2 and the next stage of force transmission component or crossbeam. Specifically, the longitudinal coupler compressive load first acts on the first stage force transmission component 20, which then transfers the longitudinal load to a pair of side beams 2 and the second stage force transmission component 21. The second stage force transmission component 21 then transfers the longitudinal load it receives to a pair of side beams 2 and the third stage force transmission component 22. The third stage force transmission component 22 then transfers the longitudinal load it receives to a pair of side beams 2 and the fourth stage force transmission component 23... The force transmission component closest to the crossbeam in each stage of the force transmission component transfers the longitudinal load it receives to the pair of side beams 2 and the crossbeam.

[0061] The longitudinal load is transmitted topologically on the car body underframe and attenuates at each stage of transmission, which reduces the load transmitted to the side beam 2, enabling the car body underframe to withstand larger longitudinal loads and improving the longitudinal bearing strength of the car body underframe.

[0062] With this configuration, the vehicle chassis provided in this embodiment of the invention, which integrates the mounting structure of the fuel tank and generator set with the structural design of the end chassis 5, greatly improves the load-bearing strength of the vehicle chassis in the longitudinal and vertical directions, enabling the vehicle chassis provided in this embodiment of the invention to withstand extremely large loads.

[0063] There are two support frames 4, located at both ends of the central underframe 1. The area enclosed by each hanger 3 lies between the areas occupied by the two support frames 4, which is beneficial for the load balance of the vehicle body underframe.

[0064] In this embodiment of the invention, both the side beam 2 and the crossbeam for mounting the hanging seat 3 have a first support portion 6 and a second support portion 7. The first support portion 6 and the second support portion 7 are distributed vertically at intervals, and the end of the crossbeam is located between the first support portion 6 and the second support portion 7 of the side beam 2. The first support portion 6 is located above the second support portion 7, and the second support portion 7 of the side beam 2 is used to support the crossbeam. The first support portion 6 and the crossbeam are used to support components such as the side wall above the vehicle chassis.

[0065] The suspension bracket 3 includes a suspension bracket body 8 and a raised edge 9. The suspension bracket body 8 has a hanging part such as a hook for suspending the oil tank. The raised edge 9 is formed on the periphery of the suspension bracket body 8.

[0066] A mounting hole is provided on the second support part 7, which allows the hanging base body 8 to pass through the second support part 7. The hanging part of the hanging base body 8 is located below the second support part 7, and the protruding edge 9 is located above the second support part 7, with the lower surface of the protruding edge 9 overlapping the upper surface of the second support part 7.

[0067] Thus, the installation of the hanging seat 3 is achieved through the interaction between the protruding edge 9 and the second support part 7. Compared with the installation of the hanging seat 3 by welding, the residual deformation and welding internal stress caused by welding are avoided, which is conducive to improving the load-bearing capacity of the middle base frame 1.

[0068] In this embodiment of the invention, the vehicle chassis also includes a support seat 10, which is disposed between the suspension seat 3 and the first support part 6, and the two ends of the support seat 10 along the vertical direction respectively abut against the suspension seat 3 and the first support part 6.

[0069] By supporting the first support part 6 with the support seat 10, the impact on the strength of the side beam 2 caused by the setting of the mounting hole can be reduced, and the support seat 10 is pressed against the hanging seat 3, which can improve the stability of the hanging seat 3 and the oil tank.

[0070] It should be noted that the support base 10 is a box-shaped structure and can be manufactured by casting. The support base 10 can be set only on the side beam 2, or it can be set on both the side beam 2 and the crossbeam, depending on the requirements for the stiffness and strength of the side beam 2 and the crossbeam.

[0071] In some embodiments, the side beam 2 includes an inner side beam 11, an outer side beam 12, and a limiting member. Both the inner side beam 11 and the outer side beam 12 have the aforementioned first support portion 6 and second support portion 7. The inner side beam 11 and the outer side beam 12 also have a first side upright portion, which is disposed between the first support portion 6 and the second support portion 7. It is understood that the cross-sectional shape of the inner side beam 11 and the outer side beam 12 in the transverse direction is C-shaped.

[0072] The inner side beam 11 is located inside the outer side beam 12, and the inner side beam 11 and the outer side beam 12 are fixedly connected together. Specifically, the first support part 6 of the inner side beam 11 is located below the first support part 6 of the outer side beam 12, the second support part 7 of the inner side beam 11 is located above the second support part 7 of the outer side beam 12, and the first side upright parts of the inner side beam 11 and the first side upright parts of the outer side beam 12 are parallel to each other.

[0073] The limiting member is disposed between the first side upright of the inner side beam 11 and the first side upright of the outer side beam 12. Through the interaction between the limiting member and the first side upright of the inner side beam 11 and the interaction between the limiting member and the first side upright of the outer side beam 12, the relative position of the inner side beam 11 and the outer side beam 12 can be positioned in the lateral direction, which facilitates the assembly of the side beam 2 and ensures the lateral dimension of the side beam 2.

[0074] The end frame 5 mainly bears the longitudinal coupler compressive load to realize the coupling and tandem arrangement of the car bodies. At the same time, the end frame 5 integrates almost all the loads of the running gear to realize the connection and force transmission between the running gear and the car body.

[0075] In this embodiment of the invention, the pair of end base frames 5 have identical structures, each including four-stage force transmission components, and each of the four-stage force transmission components is fixedly connected to a pair of side beams 2. Among the four-stage force transmission components, adjacent components are fixedly connected; the component closest to the crossbeam is fixedly connected to the crossbeam.

[0076] Specifically, the four-stage force transmission components are a first-stage force transmission component 20, a second-stage force transmission component 21, a third-stage force transmission component 22, and a fourth-stage force transmission component 23, with the specific structure as follows: Figure 8 As shown.

[0077] The primary force transmission component 20 includes a buffer beam 24, a first traction beam 25, a second traction beam 26, and a stop beam 27. Both the buffer beam 24 and the stop beam 27 extend laterally, while both the first traction beam 25 and the second traction beam 26 extend longitudinally. A pair of first traction beams 25 and second traction beams 26 are provided; the pair of first traction beams 25 are distributed laterally, and the pair of second traction beams 26 are distributed laterally on both sides of the pair of first traction beams 25. Both the first traction beam 25 and the second traction beam 26 are located between the buffer beam 24 and the stop beam 27, with both ends of the first traction beam 25 fixedly connected to the buffer beam 24 and the stop beam 27, respectively, and the second traction beam 26 fixedly connected to the buffer beam 24 and the first traction beam 25.

[0078] Among them, the first traction beam 25 is a box-shaped structure formed by a U-shaped beam and a web, the second traction beam 26 is a box-shaped structure formed by a longitudinal beam, an upper cover plate and a lower cover plate, the buffer beam 24 is a partial box-shaped structure formed by three U-shaped structures, and the stop beam 27 is a U-shaped bending structure.

[0079] The third-stage force transmission component 22 includes a bolster beam 18, and the second-stage force transmission component 21 includes a third traction beam 28, a diagonal tie beam 29, and a first shaped plate 30. The third traction beam 28 extends longitudinally, and a pair of third traction beams 28 are provided, distributed laterally. The two ends of the third traction beam 28 are fixedly connected to the stop beam 27 and the bolster beam 18, respectively. A pair of diagonal tie beams 29 are provided, distributed laterally on both sides of the pair of third traction beams 28, and fixedly connected to the stop beam 27, the third traction beam 28, and the side beam 2. A pair of first shaped plates 30 are provided, distributed laterally on both sides of the pair of third traction beams 28, and fixedly connected to the diagonal tie beam 29, the bolster beam 18, and the side beam 2.

[0080] Among them, the third traction beam 28 is a box-shaped structure formed by a U-shaped beam and a web, and the cable tie beam 29 is a box-shaped structure formed by a diagonal beam and a web. The bolster beam 18 adopts an integral molding structure, which integrates the bolster beam web and the lower cover plate into a single structure, greatly reducing the amount of welding, avoiding weld fatigue problems, simplifying manufacturing difficulty, and improving construction efficiency.

[0081] The fourth-stage force transmission component 23 includes a second irregular plate 31, a third irregular plate 32, an intermediate beam 19, and a longitudinal beam 33. The intermediate beam 19 extends laterally, and the longitudinal beam 33 extends longitudinally. A pair of longitudinal beams 33 are provided, distributed laterally, and fixedly connected to the intermediate beam 19. The second irregular plate 31 is located between the bolster beam 18 and the intermediate beam 19. A pair of second irregular plates 31 are provided, distributed laterally on both sides of the pair of longitudinal beams 33, and fixedly connected to the bolster beam 18, the side beam 2, and the intermediate beam 19. The third irregular plate 32 is located between the intermediate beam 19 and the crossbeam. A pair of third irregular plates 32 are provided, distributed laterally on both sides of the pair of longitudinal beams 33, and fixedly connected to the intermediate beam 19, the side beam 2, and the crossbeam.

[0082] The longitudinal beam 33 is a U-shaped structure formed by bending a plate. The second and third irregularly shaped plates 31 and 32 are irregularly shaped structures made from plates to conform to the force transmission path, which effectively satisfies the force transmission requirement. The intermediate beam 19 is a variable cross-section box girder composed of a web, an upper cover plate, and a lower cover plate. It not only meets the load-bearing requirements but also provides sufficient space for bogie movement. The lower surface of the intermediate beam 19 is equipped with a traction rod device, which is manufactured using a casting process to solve the problem of longitudinal impact strength requirements.

[0083] In this embodiment of the invention, different cross sections are set for the crossbeams at different locations according to the different load-bearing requirements of different positions of the vehicle body chassis. Under the premise of meeting the stiffness requirements, the mass of the crossbeams is reduced as much as possible to ensure the weight requirements of the vehicle body chassis.

[0084] The crossbeam includes a first crossbeam 13 and / or a second crossbeam 14. The vehicle body chassis may include only the first crossbeam 13, only the second crossbeam 14, or both the first crossbeam 13 and the second crossbeam 14.

[0085] At least one first crossbeam 13 is provided. The first crossbeam 13 includes a third support portion, a fourth support portion, and a pair of second side uprights. The third support portion and the fourth support portion are distributed vertically, and the pair of second side uprights are disposed between the third support portion and the fourth support portion and are spaced apart longitudinally. The longitudinal dimension of the third support portion is larger than the distance between the pair of second side uprights, which can increase the support width of the crossbeam.

[0086] At least one second crossbeam 14 is provided, and the cross-sectional shape of the second crossbeam 14 along the longitudinal direction is C-shaped.

[0087] For beams with high load-bearing requirements, such as those used to install the hanger 3 and those used to install the support frame 4, the requirements for the rigidity and strength of the beams are relatively high. Therefore, the first beam 13 is suitable. The third support part of the first beam 13 can also increase the contact area with the support frame 4.

[0088] For the beams in other positions, the load-bearing requirements are lower, and the requirements for the stiffness and strength of the beams are also lower, so the second beam 14 is suitable.

[0089] In this embodiment of the invention, the vehicle chassis also includes a floor 15, which is disposed on the middle chassis 1 and the end chassis 5. The floor 15 is located on the side of the middle chassis 1 and the end chassis 5 away from the suspension seat 3.

[0090] Specifically, the floor 15 includes a first floor 16 and a second floor 17. The first floor 16 is disposed on the end base frame 5, and each end base frame 5 is provided with a first floor 16. The second floor 17 is disposed on the middle base frame 1, located between the middle base frame 1 and the support frame 4.

[0091] Specifically, the bolster beam 18 of the end base frame 5 can be used as the dividing line. The part between a pair of bolster beams 18 of the end base frame 5 is the second floor 17, and the part of the bolster beam 18 away from the middle base frame 1 is the first floor 16.

[0092] At least the second floor 17 has a corrugated cross section along the transverse direction. Setting it to be corrugated helps to increase the cross-sectional area of ​​the second floor 17 and improve the buckling resistance of the second floor 17.

[0093] Specifically, corrugated flooring can be selected as the second flooring 17.

[0094] The first floor is divided into 16 sections. The section closest to the central base frame 1 has a corrugated cross-section, which can be made of corrugated flooring. The section furthest from the central base frame 1 has a straight cross-section, which can be made of flat flooring.

[0095] The installation of a flat floor ensures the installation of end walls and other auxiliary components.

[0096] Through extensive testing, it has been verified that, with the same material, the vehicle chassis provided by the present invention has greatly improved the load-bearing capacity in both the longitudinal and vertical directions. Furthermore, the vehicle chassis provided by the present invention can indeed meet the strength requirements of the combined working conditions consisting of a longitudinal ultra-large load of 363 tons and a vertical load of 20 tons.

[0097] A second aspect of the present invention provides a rail vehicle including the aforementioned chassis frame.

[0098] The rail vehicle provided according to the second aspect of the present invention has strong longitudinal and vertical load-bearing capacity, which is conducive to promoting the development of heavy-duty locomotives.

[0099] The rail vehicle provided in the second aspect of the present invention can be a high-speed train, a bullet train, an urban rail train, etc.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle chassis frame, characterized in that, include: The central base frame includes a pair of side beams, a plurality of crossbeams disposed between the pair of side beams, a hanging seat for suspending the fuel tank, and a support frame for supporting the generator set. The hanging seat is disposed on the pair of side beams and at least two of the crossbeams. The support frame is disposed on the crossbeams. Among all the crossbeams of the central base frame, the crossbeams located at the edge along the longitudinal direction have a gap between the ends of the side beams to reserve installation space between the ends of the pair of side beams. A pair of end frames are respectively disposed on both sides of all the crossbeams along the longitudinal direction. The end frames include at least two levels of force transmission components. Each level of force transmission component is distributed along the longitudinal direction and is located between the pair of side beams. Each level of force transmission component is fixedly connected to the pair of side beams. Each level of force transmission component is configured to transmit longitudinal loads to the pair of side beams and the next level of force transmission component or the crossbeam. The end frames include four levels of force transmission components. All four levels of force transmission components are fixedly connected to the pair of side beams. Among the four levels of force transmission components, adjacent components are fixedly connected, and the component of the four levels of force transmission components closest to the crossbeam is fixedly connected to the crossbeam. The four levels of force transmission components are respectively the first-level force transmission component, the second-level force transmission component, the third-level force transmission component, and the fourth-level force transmission component; The primary force transmission component includes a buffer beam, a first traction beam, a second traction beam, and a stop beam. The buffer beam and the stop beam extend laterally, and the first traction beam and the second traction beam extend longitudinally. The first traction beam and the second traction beam are both located between the buffer beam and the stop beam, and the two ends of the first traction beam are fixedly connected to the buffer beam and the stop beam, respectively. The second traction beam is fixedly connected to the buffer beam and the first traction beam. The first traction beam is a box-shaped structure formed by a U-shaped beam and a web plate; the second traction beam is a box-shaped structure formed by a longitudinal beam, an upper cover plate, and a lower cover plate; the buffer beam is a partial box-shaped structure formed by three U-shaped structures; and the stop beam is a U-shaped bent structure. The third-stage force transmission component includes a bolster beam, and the second-stage force transmission component includes a third traction beam, a diagonal tie beam, and a first shaped plate. The third traction beam extends longitudinally, and its two ends are fixedly connected to the stop beam and the bolster beam, respectively. The diagonal tie beam is fixedly connected to the stop beam, the third traction beam, and the side beam. The first shaped plate is fixedly connected to the diagonal tie beam, the bolster beam, and the side beam. The third traction beam is a box-shaped structure formed by a U-shaped beam and a web, the inclined tie beam is a box-shaped structure formed by an inclined beam and a web, and the bolster beam adopts an integral molding structure, which integrates the bolster beam web and the lower cover plate into a whole structure. The four-stage force transmission component includes a second irregular plate, a third irregular plate, a middle beam, and a longitudinal beam. The middle beam extends laterally, and the longitudinal beam extends longitudinally. The longitudinal beam is fixedly connected to the middle beam. The second irregular plate is disposed between the bolster beam and the middle beam and is fixedly connected to the bolster beam, the side beam, and the middle beam. The third irregular plate is disposed between the middle beam and the crossbeam and is fixedly connected to the middle beam, the side beam, and the crossbeam. The longitudinal beam is a U-shaped structure formed by bending a plate. The second and third irregularly shaped plates are irregularly shaped structures processed from plates to conform to the force transmission path. The intermediate beam is a variable cross-section box beam composed of a web, an upper cover plate, and a lower cover plate. A traction rod device is installed on the lower surface of the intermediate beam. The crossbeam includes a first crossbeam and a second crossbeam. The first crossbeam includes a third support portion, a fourth support portion, and a pair of second side uprights. The third support portion and the fourth support portion are distributed vertically. The pair of second side uprights are disposed between the third support portion and the fourth support portion and are spaced apart along the longitudinal direction. The dimension of the third support portion along the longitudinal direction is greater than the distance between the pair of second side uprights to increase the support width of the second crossbeam. The cross-sectional shape of the second crossbeam along the longitudinal direction is C-shaped. Of the various crossbeams, the crossbeam used to install the hanging bracket and the support frame uses the first crossbeam, and the remaining crossbeams use the second crossbeam; Both the side beam and the crossbeam for mounting the hanging seat have a first support portion and a second support portion, and the first support portion and the second support portion are distributed at a vertical interval. The hanging base includes: The second support portion of the hanging base body is provided with a mounting hole through which the hanging base body passes; A raised edge is formed on the periphery of the hanging base body, and the raised edge overlaps the side of the second support portion near the first support portion.

2. The vehicle chassis according to claim 1, characterized in that, Also includes: A support base is disposed between the hanging seat and the first support part, and the two ends of the support base along the vertical direction respectively abut against the hanging seat and the first support part.

3. The vehicle chassis frame according to claim 1, characterized in that, The side beam includes: Both the inner and outer side beams have a first support portion, a second support portion, and a first side support portion. The first side support portion is disposed between the first support portion and the second support portion, and the inner side beam is located inside the outer side beam. A limiting member is disposed between the first side upright portion of the inner side beam and the first side upright portion of the outer side beam.

4. The vehicle chassis frame according to claim 1 or 2, characterized in that, Also includes: A floor is provided on the middle base frame and the end base frame, the floor being located on the side of the middle base frame and the end base frame away from the hanging seat.

5. The vehicle chassis according to claim 4, characterized in that, The floor includes: A first floor is disposed on the end base frame, and each end base frame is provided with one first floor; A second floor is disposed between the central base frame and the supporting frame.

6. The vehicle chassis according to claim 5, characterized in that, At least the second floor has a corrugated cross-section along its transverse direction.

7. A rail vehicle, characterized in that, Includes the vehicle chassis as described in any one of claims 1 to 6.

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