Chassis structure and railway vehicle

Abstract

The utility model relates to the technical field of railway vehicles, in particular to a chassis structure and a railway vehicle. The underframe structure comprises two edge beams arranged at intervals and a reinforcing beam, and the reinforcing beam is at least arranged on one edge beam and extends in the extending direction of the edge beam. According to the chassis structure provided by the invention, the reinforcing beams are arranged on the edge beams, so that the section height of the edge beams is increased equivalently, that is, the cross section area of the edge beams is increased equivalently, and therefore, the first-order vertical bending modal frequency is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail vehicles, in particular to a chassis structure and a rail vehicle. BACKGROUND

[0002] With the development of industrial technology, people's environmental protection requirements for rail vehicles are getting higher and higher. In recent years, hydrogen energy has been increasingly applied in rail vehicles due to its green and environmentally friendly characteristics, which not only achieves the goal of clean transportation, but also reduces the line cost caused by the overhead contact system, third rail or charging pile of rail vehicles.

[0003] In the prior art, considering safety, hydrogen fuel cells are generally placed on the top of the rail vehicle, but the hydrogen fuel cells will occupy the height of the rail vehicle, so it is necessary to reduce the height of the vehicle body of the rail vehicle, but reducing the height of the vehicle body of the rail vehicle will reduce the cross-sectional area of the vehicle body, thereby reducing the first-order vertical bending frequency of the vehicle. CONTENT OF THE INVENTION

[0004] The present application discloses a chassis structure and a rail vehicle, which can improve the first-order vertical bending frequency of the vehicle body.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, the present application discloses a chassis structure, comprising:

[0006] two spaced apart side beams; and

[0007] a reinforcing beam, the reinforcing beam being provided at least on one of the side beams and extending along the extension direction of the side beam.

[0008] Optionally, each of the two side beams is provided with the same number of reinforcing beams.

[0009] Optionally, the reinforcing beam is provided on the upper surface of the side beam.

[0010] Optionally, the number of reinforcing beams provided on the same side beam is at least two, and the adjacent two reinforcing beams provided on the same side beam are spaced apart.

[0011] Optionally, the reinforcing beam comprises:

[0012] a hollow base body provided on the side beam; and

[0013] an end plate connected to the end of the hollow base body to close the hollow base body.

[0014] Optionally, the surface of the end plate relative to the surface of the side beam on which the reinforcing beam is provided is inclined.

[0015] Optionally, the hollow base body comprises:

[0016] side plates connecting the side beams; and

[0017] bent plates comprising first and second sub-plates being oppositely bent, the first sub-plates connecting the side beams, and the second sub-plates connecting the side plates.

[0018] Optionally, the second sub-plates are parallel to the side beams for setting surfaces of the stiffening beams, and the first sub-plates and the side plates are both perpendicular to the side beams for setting surfaces of the stiffening beams.

[0019] In a second aspect, the application discloses a rail vehicle comprising the underframe structure as above.

[0020] Compared with the prior art, the underframe structure provided by the application has at least the following beneficial effects:

[0021] The underframe structure provided by the application sets the stiffening beams on the side beams, which is equivalent to increasing the cross-sectional height of the side beams, i.e., equivalent to increasing the cross-sectional area of the side beams, thereby improving the first-order vertical bending modal frequency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0023] The application will be described in more detail below based on the embodiments and with reference to the drawings. Among them:

[0024] Figure 1 is a structural schematic diagram of the underframe structure provided by the embodiments of the application in a first perspective view;

[0025] Figure 2 is a structural schematic diagram of the underframe structure provided by the embodiments of the application in a second perspective view;

[0026] Figure 3 is a partial schematic diagram of the end of the stiffening beam of the underframe structure provided by the embodiments of the application;

[0027] Figure 4 is a cross-sectional schematic diagram of the stiffening beam of the underframe structure provided by the embodiments of the application.

[0028] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn according to the actual proportions.

[0029] Reference numerals:

[0030] 1 - underframe structure;

[0031] 11-side beam;

[0032] 12-reinforcing beam; 121-hollow base body; 1211-side plate; 1212-bent plate; 1212a-first sub-plate; 1212b-second sub-plate; 122-end plate;

[0033] 13-pillow beam. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0035] In the present application, the terms “mount”, “set”, “provided with”, “connect”, “connected” should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate media, or internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, the terms “first”, “second” and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of “multiple” is two or more.

[0037] The technical solutions of the present application will be further described below with reference to specific embodiments and drawings.

[0038] Please refer to Figure 1 With Figure 2 In a first aspect, the embodiments of the present application disclose a chassis structure 1, comprising two spaced apart side beams 11 and a reinforcing beam 12, the reinforcing beam 12 is arranged at least on one of the side beams 11 and extends along the extension direction of the side beam 11.

[0039] It should be noted that the chassis structure 1 also includes cross beams connected with the side beams 11, etc., which are not described in the embodiments of the present application.

[0040] Among them, the side beam 11 is located on both sides of the vehicle body, used to bear part of the weight of the vehicle body.

[0041] In the rail vehicle installed with the hydrogen fuel cell, the hydrogen fuel cell can only be installed on the roof in consideration of safe driving, which occupies the height space of the vehicle body, and thus the height of the rail vehicle needs to be reduced, thereby reducing the cross-sectional area of the vehicle body, which is not conducive to improving the first-order vertical bending modal frequency of the vehicle body. In order to solve this problem, in the embodiment, the reinforcing beam 12 is arranged on the side beam 11 along the extension direction of the side beam 11, which is equivalent to increasing the cross-sectional area of the side beam 11, thereby improving the first-order vertical bending modal frequency.

[0042] It should be noted that, due to the gauge of the rail vehicle, the reinforcing beam 12 can be arranged on the upper surface of the side beam 11 or on the lower surface of the side beam 11, which is not limited herein. That is, in the embodiment, the reinforcing beam 12 is arranged on the upper surface and / or the lower surface of the side beam 11, which is equivalent to increasing the cross-sectional height of the side beam 11, that is, equivalent to increasing the cross-sectional area of the side beam 11, thereby improving the first-order vertical bending modal frequency.

[0043] In some embodiments, the reinforcing beam 12 can be welded to the side beam 11.

[0044] The material of the reinforcing beam 12 is a metal material, and the material of the reinforcing beam 12 can be the same as or different from the material of the side beam 11, which is not limited herein. The reinforcing beam 12 can be welded to the side beam 11, which can increase the connection strength between the reinforcing beam 12 and the side beam 11.

[0045] In other embodiments, the reinforcing beam 12 can be connected to the side beam 11 by riveting or the like.

[0046] In some embodiments, the two side beams 11 are respectively provided with the same number of reinforcing beams 12.

[0047] In the embodiment, the same number of reinforcing beams 12 are arranged on the two side beams 11, which can balance the center of gravity of the bogie structure 1, thereby balancing the center of gravity of the rail vehicle.

[0048] In one example, one reinforcing beam 12 is arranged on each of the two side beams 11.

[0049] In another example, two reinforcing beams 12 are arranged on each of the two side beams 11.

[0050] In other embodiments, different numbers of reinforcing beams 12 can be arranged on the two side beams 11, which can balance the center of gravity of the rail vehicle by adjusting the material and other parameters of the reinforcing beams 12 arranged on the two side beams 11.

[0051] Please continue to refer to Figure 1 and Figure 2 In some embodiments, the reinforcing beam 12 is arranged on the upper surface of the side beam 11.

[0052] In the embodiment, the reinforcing beam 12 is arranged on the upper surface of the side beam 11, which is equivalent to increasing the cross-sectional height of the side beam 11, i.e. equivalent to increasing the cross-sectional area of the side beam 11, thereby improving the first-order vertical bending modal frequency.

[0053] For example, the upper surface of each of the two side beams 11 is provided with the reinforcing beam 12.

[0054] In other embodiments, the reinforcing beam 12 can be arranged on the lower surface of the side beam 11.

[0055] In some embodiments, the number of reinforcing beams 12 arranged on the same side beam 11 is at least two, and the adjacent two reinforcing beams 12 arranged on the same side beam 11 are spaced apart.

[0056] Arranging multiple reinforcing beams 12 on the same side beam 11 can further enhance the structural strength of the side beam 11 and improve the carrying capacity and stability of the entire chassis. At the same time, when the chassis is subjected to external force, the multiple reinforcing beams 12 arranged at intervals can effectively disperse and transmit stress, avoiding stress concentration at one point, thereby reducing the risk of local deformation or damage of the side beam 11. In addition, arranging multiple reinforcing beams 12 arranged at intervals on the same side beam 11 enables the side beam 11 to better resist fatigue damage caused by periodic load, i.e. can improve the fatigue resistance of the side beam 11 and prolong the service life.

[0057] In other embodiments, the reinforcing beam 12 can be a continuous whole.

[0058] Please continue to refer to Figure 1 and Figure 2 In some embodiments, the chassis structure 1 further comprises two spaced-apart bolster beams 13, both of which are connected to the side beam 11, and the reinforcing beam 12 is located between the two bolster beams 13.

[0059] The bolster beam 13 is used to connect the car body and the bogie of the railway vehicle.

[0060] Arranging the reinforcing beam 12 between the two bolster beams 13 can prevent the reinforcing beam 12 from interfering with other structures such as the cab.

[0061] In one example, a reinforcing beam 12 is arranged on the upper surface of each side beam 11, and the reinforcing beam 12 is located between the two bolster beams 13, and the two ends of the reinforcing beam 12 are respectively adjacent to the two bolster beams 13 but spaced apart from the two bolster beams 13. In this example, the first-order vertical bending frequency of the vehicle body of the railway vehicle without the reinforcing beam 12 is 9.7 Hz, and in this example, the first-order vertical bending frequency of the vehicle body of the railway vehicle is increased to 11.7 Hz, which is increased by 20.6%, and the first-order vertical bending frequency of the vehicle body of the railway vehicle is greater than 10 Hz, i.e., greater than the requirement for the first-order vertical bending frequency of the vehicle body of the railway vehicle.

[0062] In other embodiments, the end of the reinforcing beam 12 can also extend beyond the bolster beam 13.

[0063] Please refer to Figure 3 In some embodiments, the reinforcing beam 12 includes a hollow base body 121 and an end plate 122. The hollow base body 121 is arranged on the side beam 11. The end plate 122 is connected to the end of the hollow base body 121 to close the hollow base body 121.

[0064] In this example, the hollow base body 121, i.e., the reinforcing beam 12, is a hollow structure. Arranging the reinforcing beam 12 as a hollow structure can reduce the weight of the reinforcing beam 12, thereby avoiding the weight of the bogie structure 1 being too large.

[0065] By connecting the end plate 122 to the end of the hollow base body 121 and closing the hollow base body 121, the strength of the reinforcing beam 12 can be enhanced.

[0066] In other embodiments, a support structure can also be arranged inside the hollow base body 121.

[0067] In some more specific embodiments, the end plate 122 is inclined relative to the surface of the side beam 11 on which the reinforcing beam 12 is arranged.

[0068] In this example, the inclined end plate 122 can increase the connection area with the hollow base body 121, thereby dispersing stress and improving the strength and stability of the connection between the end plate 122 and the hollow base body 121. In addition, when the reinforcing beam 12 is subjected to shear force, the inclined end plate 122 can provide better shear resistance and can more effectively resist shear deformation, thereby maintaining the stability of the reinforcing beam 12.

[0069] In other more specific embodiments, the end plate 122 can also be perpendicular to the surface of the side beam 11 on which the reinforcing beam 12 is arranged.

[0070] In some more specific embodiments, the distance between the end plate 122 at the two ends of the reinforcing beam 12 and the upper side of the side beam 11 in the extension direction of the side beam 11 is less than the distance between the lower sides of the side beams 11 connected in the extension direction of the side beam 11, so as to improve the stability and connection strength of the reinforcing beam 12.

[0071] Please refer to Figure 4 In some more specific embodiments, the hollow base body 121 comprises a side plate 1211 and a bent plate 1212. The side plate 1211 is connected to the side beam 11. The bent plate 1212 comprises a first sub-plate 1212a and a second sub-plate 1212b, the first sub-plate 1212a is connected to the side beam 11, and the second sub-plate 1212b is connected to the side plate 1211.

[0072] It should be noted that the bent plate 1212 is an integral structure, and the bent plate 1212 is bent to form the first sub-plate 1212a and the second sub-plate 1212b, so that the connection between the first sub-plate 1212a and the second sub-plate 1212b is continuous, that is, there is no fracture surface or unsealing, so as to enhance the structural integrity and connection strength of the reinforcing beam 12. At the same time, it can also avoid potential defects caused by improper handling between the first sub-plate 1212a and the second sub-plate 1212b, thereby improving the strength of the reinforcing beam 12. In addition, the first sub-plate 1212a and the second sub-plate 1212b are formed by bending, which can be processed by one-time molding, stamping or bending process, without the need for additional welding or splicing steps, thereby simplifying the manufacturing process, improving the production efficiency, and also helping to reduce the manufacturing cost.

[0073] Among them, the second sub-plate 1212b and the side plate 1211 can be connected by splicing and welding, or connected by other ways, which are not limited here.

[0074] In other more specific embodiments, the first sub-plate 1212a and the second sub-plate 1212b can also be connected by welding.

[0075] In some more specific embodiments, the second sub-plate 1212b is parallel to the surface of the side beam 11 for setting the reinforcing beam 12, and the first sub-plate 1212a and the side plate 1211 are both perpendicular to the surface of the side beam 11 for setting the reinforcing beam 12.

[0076] The second sub-plate 1212b is parallel to the surface of the side beam 11 for setting the reinforcing beam 12, which helps to disperse and transfer the load, reduces the local stress concentration, thereby enhancing the stability of the entire structure. The first sub-plate 1212a and the side plate 1211 are perpendicular to the surface of the side beam 11 for setting the reinforcing beam 12, which can avoid the deformation of the reinforcing beam 12 under the action of the vertical force.

[0077] In some more specific embodiments, the first sub-plate 1212a and the side plate 1211 can also be used to set the surface of the stiffener 12 to be inclined relative to the side beam 11.

[0078] In a second aspect, the embodiments of the present application further disclose a rail vehicle (not shown in the figure), comprising the underframe structure 1 as described above.

[0079] The rail vehicle disclosed by the embodiments of the present application comprises the underframe structure 1 as described above, and the stiffener 12 arranged on the side beam 11 is equivalent to increasing the cross-sectional height of the side beam 11, that is, equivalent to increasing the cross-sectional area of the side beam 11, thereby improving the first-order vertical bending modal frequency.

[0080] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A chassis structure, characterized by, The chassis structure comprises: two spaced apart side beams; and a reinforcing beam arranged at least on one of the side beams and extending along the extension direction of the side beam. Each of the two side beams is provided with the same number of reinforcing beams.

2. The undercarriage structure of claim 1, wherein The reinforcing beam is arranged on the upper surface of the side beam.

3. The undercarriage structure of claim 1, wherein The number of reinforcing beams arranged on the same side beam is at least two, and the adjacent two reinforcing beams arranged on the same side beam are spaced apart.

4. The undercarriage structure of claim 1, wherein The chassis structure further comprises two spaced apart sleeper beams connected between the two side beams, and the reinforcing beam is located between the two sleeper beams.

5. The undercarriage structure of claim 1, wherein The reinforcing beam comprises:

6. The undercarriage structure according to any one of claims 1-5, characterized in that, a hollow base arranged on the side beam; and an end plate connected to the end of the hollow base to close the hollow base. The surface of the end plate relative to the surface of the side beam on which the reinforcing beam is arranged is inclined.

7. The undercarriage structure of claim 6, wherein The hollow base comprises:

8. The undercarriage structure of claim 6, wherein, a side plate connected to the side beam; and a bent plate comprising a first sub-plate and a second sub-plate bent in opposite directions, the first sub-plate being connected to the side beam, and the second sub-plate being connected to the side plate. The surface of the second sub-plate parallel to the surface of the side beam on which the reinforcing beam is arranged is inclined, and the surfaces of the first sub-plate and the side plate perpendicular to the surface of the side beam on which the reinforcing beam is arranged are inclined.

9. The undercarriage structure of claim 8, wherein, The chassis structure comprises any one of claims 1-9.

10. A rail vehicle, characterized by ​

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