Train and its beam components

Abstract

The present invention discloses a train and a crossbeam assembly thereof, wherein the crossbeam assembly comprises a crossbeam and a bolster bracket which are arranged separately, wherein the crossbeam comprises two beam bodies which are arranged parallel to each other, wherein the cross section of the beam body is a rectangular structure, and the beam body is made of a carbon fiber composite material; and the bolster bracket comprises two bracket parts which are arranged parallel to each other, and the two ends of the bracket are respectively connected to the two beam bodies. The crossbeam assembly can reduce the weight while ensuring the mechanical properties of the crossbeam assembly.

Description

Technical Field

[0001] The invention relates to the technical field of trains, in particular to a train and a crossbeam component thereof. Background Art

[0002] Taking the maglev train as an example, the crossbeam component is a key load-bearing component of the vehicle, connected to the longitudinal beam and the electromagnet module, and transmits the force between the vehicle body and the electromagnet through the secondary suspension component. The crossbeam component mainly bears the longitudinal traction braking force, lateral guiding force, vertical suspension force and the weight of the maglev train. Under complex load conditions, the fatigue strength of the crossbeam component becomes a major concern.

[0003] At present, the crossbeam components used in maglev trains are mainly made of aluminum alloy. Specifically, the crossbeam is machined through aluminum alloy extrusion profiles, and the bolster bracket is machined through cast aluminum alloy. The two are connected by rivets after machining. Currently, the scrap rate of aluminum alloy profiles and castings is high, and the fatigue reliability of the final crossbeam component is poor and the weight is high, which is not conducive to the development demand of lightweight maglev trains.

[0004] Similar problems exist with beam formation for other types of trains.

[0005] In view of this, how to improve the beam composition of existing trains so as to reduce the weight while improving the mechanical properties of the beam composition is a technical problem that technical personnel in this field currently need to solve. Summary of the invention

[0006] The object of the present invention is to provide a train and a crossbeam assembly thereof, wherein the crossbeam assembly can reduce the weight while ensuring the mechanical properties of the crossbeam assembly.

[0007] In order to solve the above technical problems, the present invention provides a crossbeam composition of a train, including a separately arranged crossbeam and a bolster bracket, the crossbeam including two beam bodies arranged parallel to each other, the cross-section of the beam body presents a rectangular structure, and the beam body is a beam body made of carbon fiber composite material; the bolster bracket includes two bracket parts, the two bracket parts are arranged parallel to each other, and the two ends of the bracket are respectively connected to the two beam bodies.

[0008] The crossbeam component of the train includes a separately arranged crossbeam and a bolster bracket, wherein the two beam bodies arranged parallel to each other are made of carbon fiber composite materials, which can improve the fatigue strength of the crossbeam component, so that it has higher strength and deformation resistance, better corrosion resistance and noise reduction performance, and can greatly reduce the overall weight of the crossbeam component; in addition, the beam body and the bolster bracket are separately arranged and then connected, that is, the beam body can be processed separately, and the manufacturing efficiency is high. At the same time, the bolster bracket can be made of materials with good strength and rigidity, such as metal materials, so that the overall crossbeam component meets the mechanical performance requirements.

[0009] In the above-mentioned train crossbeam composition, the bracket part is a metal part, and the bracket part is fixed to the beam body by riveting.

[0010] The crossbeam composition of the train as described above, wherein the bracket part is made of carbon fiber composite material, and further comprises a metal connector, and both ends of the bracket part are connected to the two beam bodies through the two metal connectors respectively.

[0011] The crossbeam composition of the train as described above, wherein the interior of the beam body is further provided with reinforcing ribs made of carbon fiber composite materials.

[0012] The crossbeam of the train as described above is composed of four reinforcing ribs, which are respectively arranged at four corners of the beam body, and the two ends of each rib are respectively connected to the inner wall surfaces of the adjacent two side walls of the beam body.

[0013] The train crossbeam composition as described above comprises a rib body and rib folds formed by bending along two ends of the rib body toward the same side, and the two rib folds are respectively fitted and fixed to the inner wall surfaces of adjacent two side walls of the beam body.

[0014] In the above-mentioned train crossbeam composition, the rib fold is fixed to the side wall of the beam body by bonding.

[0015] In the train crossbeam composition as described above, the ratio of the thickness of the rib portion to the wall thickness of the beam body is 0.3 to 0.5.

[0016] The present invention also provides a train, comprising a crossbeam assembly, wherein the crossbeam assembly is any of the crossbeam assemblies described above.

[0017] Since the above-mentioned beam composition has the above-mentioned technical effects, the train including the beam composition also has the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the beam composition in a specific embodiment;

[0019] Figure 2 for Figure 1 A top view of the beam composition shown;

[0020] Figure 3 for Figure 1 A schematic structural diagram of a bracket portion of a middle bolster bracket;

[0021] Figure 4 for Figure 1 Schematic diagram of the cross section of the beam body of the middle cross beam.

[0022] Description of reference numerals:

[0023] The cross beam is composed of 100 , a beam body 110 , a bracket portion 120 , an extended wall portion 121 , a rib portion 130 , a rib body 131 , and a rib fold 132 . DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] For ease of understanding and concise description, the following text takes the maglev train as an example, and explains the maglev train and its crossbeam composition together, and the beneficial effects part will not be repeated.

[0026] Please refer to Figures 1 to 4 , Figure 1 It is a structural schematic diagram of the beam composition in a specific embodiment; Figure 2 for Figure 1 A top view of the beam composition shown; Figure 3 for Figure 1 A schematic structural diagram of a bracket portion of a middle bolster bracket; Figure 4 for Figure 1 Schematic diagram of the cross section of the beam body of the middle cross beam.

[0027] The crossbeam of the maglev train is the key load-bearing component of the whole vehicle. It is connected to the longitudinal beam and the electromagnet module, and transmits the force between the car body and the electromagnet through the secondary suspension.

[0028] The crossbeam assembly 100 in this embodiment includes a crossbeam and a bolster bracket. The crossbeam and the bolster bracket are separately arranged, that is, the two are relatively independent components and are processed and manufactured separately.

[0029] The cross beam includes two beam bodies 110 arranged parallel to each other. The cross section of the beam body 110 is substantially rectangular. The beam body 110 is made of carbon fiber composite material.

[0030] The bolster bracket includes two bracket portions 120 . The two bracket portions 120 are arranged parallel to each other, and two ends of each bracket portion 120 are respectively connected to two beam bodies 110 .

[0031] The two beam bodies 110 of the crossbeam in this embodiment are made of carbon fiber composite materials. In this way, the beam body 110 has high plasticity and is easy to process. The beam body 110 made of carbon fiber composite materials has high fatigue strength, strong deformation resistance, corrosion resistance and good vibration and noise reduction performance. Compared with the crossbeam assembly made of aluminum alloy in the prior art, it can reduce the overall weight of the crossbeam assembly 100 to meet the development needs of lightweight.

[0032] On this basis, the two bracket parts 120 of the bolster bracket can be made of materials with good strength and rigidity, such as metal materials, so that the overall crossbeam assembly 100 meets the relevant mechanical performance requirements.

[0033] In addition, each beam body 110 of the cross beam and each bracket portion 120 of the bolster bracket are processed separately, the mold design is simple, and the manufacturing efficiency is high.

[0034] In a specific solution, the two bracket parts 120 of the bolster bracket are both metal parts, and the bracket parts 120 and the beam body 110 are fixed by riveting.

[0035] refer to Figures 1 to 3 In the illustrated scheme, the bracket portion 120 is a groove-shaped structure, including a top wall portion, a bottom wall portion, a side wall portion and two end walls. After the two bracket portions 120 are fixedly connected between the two beam bodies 110, the grooves of the two are opposite.

[0036] In a specific solution, the bracket portion 120 can be integrally formed to avoid the existence of connection points in the bracket portion 120 itself, so as to improve the overall rigidity and strength of the beam assembly 100 .

[0037] Specifically, both ends of the top wall portion and the bottom wall portion of the bracket portion 120 extend toward their outer ends to form an extended wall portion 121. In this way, the two extended wall portions 121 located at the same end of the bracket portion 120 and the end wall portion on the same side form a U-shaped bayonet structure. During assembly, the bayonet is engaged with the beam body 110. The extended wall portion 121 and the wall portion of the corresponding beam body 110 can be fixedly connected by rivets. In this way, the relative positions of the bracket portion 120 and the beam body 110 are limited, and the fixing effect is good.

[0038] Of course, in practical applications, the bracket portion 120 can also be designed as other structures as needed, not limited to those shown in the figure, but the structure of the connection portion between it and the beam body 110 can be designed similarly.

[0039] In addition to the above method, in other embodiments, the bracket portion 120 of the bolster bracket can also be made of carbon fiber composite materials. On this basis, the crossbeam assembly 100 also includes a metal connector, and the end of the bracket portion 120 is specifically fixedly connected to the beam body 110 through the metal connector.

[0040] In this way, the rocker bracket is also made of carbon fiber composite material, which can further reduce the overall weight of the beam assembly 100.

[0041] In specific applications, the beam body 110 and the rocker bracket can be made of carbon fiber prepreg of different specifications, and the principles of equal stiffness design and strain control can be adopted to ensure that the beam component 100 has sufficient strength and is relatively lightest in all working conditions.

[0042] Specifically, the bracket portion 120 and the metal connector as well as the metal connector and the beam body 110 are fixed by riveting.

[0043] In this solution, the specific structural design of the bracket portion 120 and the metal connector can be determined according to actual needs.

[0044] In a specific solution, in order to ensure the rigidity of the beam body 110 , reinforcing ribs made of carbon fiber composite material are further provided inside the beam body 110 .

[0045] Specifically, the reinforcing ribs include four rib portions 130, and the four rib portions 130 are respectively arranged at the four corners of the beam body 110, and the two ends of each rib portion 130 are respectively connected to the inner wall surfaces of the adjacent two side walls of the beam body 110. It can be understood that after such arrangement, the rib portion 130 is inclined with the wall portion of the beam body 110, and each rib portion 130 forms a triangular structure with the two wall portions connected thereto, thereby improving the rigidity of the beam body 110.

[0046] Specifically, without interfering with the relevant mechanical connection structure in the beam body 110, the extension length of the rib 130 can be substantially consistent with the beam body 110. Of course, according to structural design requirements, the rib 130 can also be arranged in sections and intervals along the length direction of the beam body 110.

[0047] In this embodiment, the rib portion 130 includes a rib body 131 and a rib folded edge 132 formed by bending along the two ends of the rib body 131 toward the same side. When connected, the two rib folded edges 132 of the rib portion 130 are respectively adhered and fixed to the inner wall surfaces of the adjacent two side walls of the beam body 110 with which they cooperate. In this way, the fixing area of ​​the rib portion 130 and the beam body 110 can be increased to ensure the fixing effect of the two.

[0048] Specifically, the rib fold 132 is fixed to the beam body 110 by bonding.

[0049] like Figure 4 As shown, after being fixed, a rib folded edge 132 of one rib portion 130 may abut against a corresponding rib folded edge 132 of another adjacent rib portion 130 .

[0050] In a specific solution, the thickness of the rib 130 can be set smaller than the wall thickness of the beam body 110, for example, the ratio of the two can be selected in the range of 0.3 to 0.5. For example, in one example, the thickness of the rib 130 is 3 mm, and the wall thickness of the beam body 110 is 7 mm.

[0051] The train and the crossbeam components provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. The crossbeam composition of the maglev train is characterized by: It comprises a crossbeam and a bolster bracket which are separately arranged, wherein the crossbeam comprises two beam bodies which are arranged in parallel with each other, the cross section of the beam body is a rectangular structure, and the beam body is made of carbon fiber composite material; the bolster bracket comprises two bracket parts, the two bracket parts are arranged in parallel with each other, and the two ends of the bracket parts are respectively connected to the two beam bodies; The beam body is also provided with reinforcing ribs made of carbon fiber composite material; the reinforcing ribs include four rib parts, the four rib parts are respectively provided at the four corners of the beam body, and the two ends of each rib part are respectively connected to the inner wall surfaces of the adjacent two side walls of the beam body; The bracket portion is a groove-shaped structure, and the grooves of the two bracket portions are arranged opposite to each other. The bracket portion includes a top wall portion, a bottom wall portion, a side wall portion and two end wall portions. Both ends of the top wall portion and the bottom wall portion of the bracket portion extend toward their outer ends to form extended wall portions. The two extended wall portions located at the same end of the bracket portion and the end wall portion on the same side form a U-shaped bayonet structure, and the bayonet is engaged with the beam body.

2. The crossbeam composition of the maglev train according to claim 1, characterized in that: The bracket part is a metal part, and the bracket part is fixed to the beam body by riveting.

3. The crossbeam composition of the maglev train according to claim 1, characterized in that: The bracket part is made of carbon fiber composite material and also includes a metal connector. Both ends of the bracket part are connected to the two beam bodies through the two metal connectors respectively.

4. The crossbeam composition of a maglev train according to any one of claims 1 to 3, characterized in that: The rib portion comprises a rib body and rib folds formed by bending along two ends of the rib body toward the same side, and the two rib folds are respectively fitted and fixed to the inner wall surfaces of the adjacent two side walls of the beam body.

5. The crossbeam assembly of the maglev train according to claim 4, characterized in that: The rib folded edge is fixed to the side wall of the beam body by bonding.

6. The crossbeam composition of a maglev train according to any one of claims 1 to 3, characterized in that: The ratio of the thickness of the rib portion to the wall thickness of the beam body is 0.3-0.

5.

7. A maglev train, comprising a crossbeam assembly, characterized in that: The crossbeam composition is the crossbeam composition described in any one of claims 1-6.

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