Composite material bolster structure and high speed train

Abstract

The application discloses a composite material pillow beam structure and a high-speed train. The pillow beam is composed of an upper wall plate, a lower wall plate, an air storage bottle, left and right crescent support tables, a support frame, a snake-resisting shock absorber, an I-shaped beam and an aluminum alloy inlay piece in a framework. The application is based on the original aluminum alloy pillow beam structure and is re-adjusted and designed based on the composite material under the condition that the original connection position is not changed. The application can ensure the volume, service life and strength of the train pillow beam, and significantly reduce the structure weight of the train pillow beam under the same condition by simplifying the structure and applying the new material, and solves the internal drainage problem of the train pillow beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of key bearing components on high-speed train bogies, in particular to a composite material bolster structure and a high-speed train. BACKGROUND

[0002] The bolster of a high-speed train is not only a bearing component of the whole car body, but also an auxiliary container of an air spring. The cavity of the bolster can store gas, and all cavities are interconnected to supplement the air spring with gas. The current bolster is a cavity type aluminum alloy casting, and the inner cavity has a complex geometry, uneven wall thickness, and multiple thermal joints. The inner cavities are nested with each other, and the process is very complex because it requires no dirt and no iron filings in the cavity. Moreover, since it is an aluminum alloy casting, there is a great space for improvement in the overall weight. SUMMARY

[0003] The present application mainly solves the problem of lightweighting of the key bearing position of the traditional high-speed train, and optimizes the structure and process to a certain extent. Under the premise of ensuring the stiffness and connection strength of the bolster structure, the maximum lightweight design is realized, and a simple bogie bolster component mounting scheme is realized. The inner gas storage part of the present application is designed as a gas cylinder, which takes advantage of the good gas tightness and mature manufacturing process of the gas cylinder. The present application uses a large amount of composite material, which can significantly reduce the overall weight compared to the original aluminum alloy casting, achieve energy saving and cost reduction, and has superior tensile fatigue performance. The composite material selected is a laminated composite material, and its fatigue life dispersion is much larger than that of the original metal material.

[0004] In a first aspect, a composite material bolster structure is provided, comprising:

[0005] The gas cylinder, the first type of I-beam, and the air pipe are provided between two adjacent gas cylinders. The first type of I-beam has an inner cavity and an I-beam through hole communicating with the inner cavity. The I-beam through hole is used to communicate with the air spring. The gas cylinder communicates with the inner cavity of the first type of I-beam through the air pipe.

[0006] In combination with the first aspect, in some implementations of the first aspect, the gas cylinder is provided with a gas cylinder pipe. One end of the gas cylinder pipe communicates with the air pipe, and the other end is used to suck the condensed water in the gas cylinder.

[0007] With reference to the first aspect, in some implementations of the first aspect, the first type of I-beam includes an upper end face, a lower end face, a left C-shaped bent face, and a right C-shaped bent face, the C-shaped openings of the left C-shaped bent face and the right C-shaped bent face are oppositely arranged, the upper and lower sides of the left C-shaped bent face and the upper and lower sides of the right C-shaped bent face are respectively sealedly connected with the upper end face and the lower end face to form an inner cavity of the first type of I-beam, and the I-beam through hole is arranged on the upper end face.

[0008] With reference to the first aspect, in some implementations of the first aspect, the number of gas cylinders is greater than or equal to 4, the number of the first type of I-beams is greater than or equal to 2, and the composite material bolster structure further includes a second type of I-beam, the second type of I-beam does not have an inner cavity, and the second type of I-beam is located between two gas cylinders between two adjacent first type of I-beams.

[0009] With reference to the first aspect, in some implementations of the first aspect, the inner cavity of the first type of I-beam is provided with an I-beam support.

[0010] With reference to the first aspect, in some implementations of the first aspect, the composite material bolster structure further includes a side support frame, the ventilation pipeline is integrated in the side support frame, and the gas cylinder and the first type of I-beam extend into a cavity of the side support frame to communicate with the ventilation pipeline.

[0011] With reference to the first aspect, in some implementations of the first aspect, the side support frame includes a first support beam and a second support beam, adjacent first and second partitions are arranged between the first and second support beams, the ventilation pipeline penetrates the first and second partitions, and a ventilation opening of the gas cylinder or the first type of I-beam penetrates the first support beam to extend between the first and second partitions and communicate with the ventilation pipeline.

[0012] With reference to the first aspect, in some implementations of the first aspect, the composite material bolster structure further includes a connecting beam fixedly connected with the side support frame, the connecting beam is provided with a connecting beam through hole, and the connecting beam through hole and the I-beam through hole are arranged in alignment.

[0013] With reference to the first aspect, in some implementations of the first aspect, the composite material bolster structure further includes an upper cover plate and a lower cover plate, the upper and lower cover plates cover the upper and lower sides of the gas cylinders, and the left or right side of the upper cover plate and the lower cover plate wraps the side wall of the side support frame.

[0014] With reference to the first aspect, in some implementations of the first aspect, the composite pillow beam structure further comprises a winding layer and a side wall, the winding layer is arranged around the outer periphery of the upper cover plate and the lower cover plate, and the side wall is arranged between the winding layer and the gas cylinder, and the side wall is smooth on the side connected with the winding layer.

[0015] In a second aspect, a high-speed train is provided, which comprises the composite pillow beam structure according to any one of the implementations of the first aspect.

[0016] Compared with the prior art, the scheme provided by the present application has at least the following beneficial technical effects:

[0017] (1) The overall structure of the gas cylinder cover plate winding layer is adopted, and the structural rigidity and lightweight of the pillow beam are considered.

[0018] (2) On the premise of ensuring the connection strength of the pillow beam, the train speed is improved and the energy loss cost is reduced through lightweight design.

[0019] (3) The amount of raw materials required for manufacturing this scheme is less than that of the original aluminum alloy, thereby reducing the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 And Figure 2 is a schematic structural diagram of a composite pillow beam structure provided by an embodiment of the present application.

[0021] Figure 3 is an exploded view of a composite pillow beam structure provided by an embodiment of the present application.

[0022] Figure 4 is a structural schematic diagram of a composite pillow beam structure without air spring support assemblies, air spring support assemblies, an upper cover plate and a winding layer.

[0023] Figure 5 is a three-dimensional schematic diagram of an internal framework of a composite pillow beam structure.

[0024] Figure 6 is a three-dimensional schematic diagram of an I-beam assembly.

[0025] Figure 7 is a sectional view of a composite pillow beam structure.

[0026] Figure 8 is another sectional view of a composite pillow beam structure.

[0027] Figure 9 is still another sectional view of a composite pillow beam structure. DETAILED DESCRIPTION

[0028] The application will be described in further detail below with reference to the drawings and specific embodiments.

[0029] Figure 1 and Figure 2 is a schematic structural diagram of a composite material pillow beam structure provided by an embodiment of the application. Figure 3 is an exploded view of a composite material pillow beam structure provided by an embodiment of the application. The composite material pillow beam structure can include an upper cover plate 1, a lower cover plate 2, gas cylinders 3, I-beam assemblies 4, side support frames 5, side support frames 6, connecting beams 7, connecting beams 8, winding layers 9, side walls 10, anti-torsion supports 11, anti-torsion supports 12, air spring support assemblies 13, and air spring support assemblies 14. Figure 4 shows a structural schematic diagram of the composite material pillow beam structure with the air spring support assemblies 13, the air spring support assemblies 14, the upper cover plate 1, and the winding layers 9 removed.

[0030] First, the internal framework of the composite material pillow beam structure is introduced. Figure 5 shows a three-dimensional schematic diagram of the internal framework of a composite material pillow beam structure. The internal framework of the composite material pillow beam structure can include a plurality of gas cylinders 3, I-beam assemblies 4, and air vent pipelines 15. In Figure 5 In the embodiment shown, the number of gas cylinders 3 can be four.

[0031] The plurality of gas cylinders 3 can be arranged in parallel and at intervals. One I-beam assembly 4 can be arranged between two adjacent gas cylinders 3. As Figure 6 shown, the I-beam assembly 4 includes an I-beam body 41 having an inner cavity 42 and an I-beam support 43 in the inner cavity 42 of the I-beam body 41. The air vent pipeline 15 is connected to the cylinder mouth of the gas cylinder 3 and is connected to the inner cavity 42 of the I-beam body 41. The I-beam body 41 further includes a through hole 44 in communication with the air spring. Thus, as Figure 7 shown, the gas in the gas cylinder 3 enters the air spring through the air vent pipeline 15 and the through hole 44 on the I-beam body 41.

[0032] The I-beam body 41 can specifically include an upper end face, a lower end face, a left C-shaped bent face, and a right C-shaped bent face. The C-shaped openings of the left C-shaped bent face and the right C-shaped bent face are arranged opposite to each other. The upper and lower sides of the left C-shaped bent face and the upper and lower sides of the right C-shaped bent face are respectively sealedly connected to the upper end face and the lower end face to form the inner cavity of the I-beam body 41. The through hole 44 on the I-beam body 41 can be arranged on the upper end face of the I-beam body 41.

[0033] In combination with Figure 7In some embodiments, the venting pipe 15 can be at least partially integrated with the side support frame 5, 6. Taking the side support frame 5 as an example, the side support frame 5 can include a first support beam 51 and a second support beam 52, and a plurality of partitions 53 can be arranged between the first support beam 51 and the second support beam 52. The venting pipe 15 can pass through the plurality of partitions 53. The space between two adjacent partitions 53 can correspond to the bottle mouth of the gas cylinder 3 or the I-beam body 41, and the venting pipe 15 can extend a venting pipe branch into the space between the two adjacent partitions 53, and the venting port of the gas cylinder 3 or the venting port of the I-beam body 41 can extend into the space between the two adjacent partitions 53 through the first support beam 51, so that the venting pipe branch can communicate with the inner cavity 42 of the gas cylinder 3 or the I-beam body 41.

[0034] Figure 8 A sectional view of the internal framework of the composite pillow beam structure is shown. The principle of discharging liquid from the gas cylinder 3 is described below. The bottle mouth of the gas cylinder 3 is provided with a gas cylinder pipe 31, which can communicate with the venting pipe 15. For example, in the case of temperature change, etc., condensate water may appear in the gas cylinder 3. When the compressed gas enters the air spring from the gas cylinder 3, the condensate water flows from the gas cylinder 3 into the venting pipe 15 under the action of pressure, and then flows into the inner cavity 42 of the I-beam body 41 along the venting pipe 15, and finally flows into the air spring through the I-beam body 41, and is discharged by the maintenance personnel regularly, realizing gas-water separation.

[0035] Figure 9 A sectional view of the internal framework of the composite pillow beam structure is shown. In some embodiments provided in the present application, the I-beam assembly 4 can include two types of I-beams. The I-beam body 41 mentioned above with the inner cavity 42 can belong to the first type of I-beam, also known as wide I-beam. The I-beam assembly 4 can also include a second I-beam, which is referred to as a narrow I-beam. The second I-beam can not have an inner cavity. The width of the first type of I-beam can be greater than that of the second type of I-beam.

[0036] As Figure 9 shown, a first type of I-beam 4a can be arranged between the first gas cylinder and the second gas cylinder, a second type of I-beam 4b can be arranged between the second gas cylinder and the third gas cylinder, and a first type of I-beam 4a can be arranged between the third gas cylinder and the fourth gas cylinder. The first gas cylinder and the second gas cylinder can share a first type of I-beam 4a, and the third gas cylinder and the fourth gas cylinder can share another first type of I-beam 4a. In other words, the first gas cylinder and the second gas cylinder can supply gas to the same I-beam, and the third gas cylinder and the fourth gas cylinder can supply gas to the same I-beam. The second gas cylinder and the third gas cylinder do not need to have a venting function, and a I-beam with less width and material consumption can be arranged to constrain the positional relationship between the second gas cylinder and the third gas cylinder. In combination with Figure 6 and Figure 9The rubber 45 can be arranged between the gas cylinder and the H-beam for fixation.

[0037] The other parts of the composite material bolster structure will be introduced below. Figure 4 and Figure 7 The left and right sides of the internal framework of the composite material bolster structure are respectively arranged on the side support frame 5 and the side support frame 6. The connecting beam 7 is provided with a through hole corresponding to the air spring, so as to be aligned with the through hole on the H-beam. The other side of the connecting beam 7 can be fixedly connected with the side support frame 5. Thus, the fixed connection of the side support frame 5 and the internal framework is realized through the connecting beam 7. The connecting beam 8 is provided with a through hole corresponding to the air spring, so as to be aligned with the through hole on the H-beam. The other side of the connecting beam 8 can be fixedly connected with the side support frame 6. Thus, the fixed connection of the side support frame 6 and the internal framework is realized through the connecting beam 8. Thus, the force transmission structure of the whole bolster is formed. The front sides of the side support frame 5 and the side support frame 6 are respectively provided with the anti-torsion support 11 and the anti-torsion support 12.

[0038] The upper cover plate 1 and the lower cover plate 2 can be arranged on the upper and lower sides of the internal framework. The left and right sides of the upper cover plate 1 are respectively provided with downwardly bent side walls, and the left and right sides of the lower cover plate 2 are respectively provided with upwardly bent side walls. The left side wall of the upper cover plate 1 and the left side wall of the lower cover plate 2 can wrap the left side of the side support frame 5. The right side wall of the upper cover plate 1 and the right side wall of the lower cover plate 2 can wrap the right side of the side support frame 6.

[0039] In order to meet the requirement of integrity, the outer wrapping edge of the whole framework and the upper and lower panels need to be correspondingly wrapped and reinforced. That is, the wrapping layer 9 can be arranged on the outer periphery of the upper cover plate 1 and the lower cover plate 2. Considering that the connection position of the bolster with the external mechanism needs to be kept unchanged, the last wrapping layer 9 is laid more smoothly, and thus the side wall 10 can be arranged between the outer side of the gas cylinder 3 and the wrapping layer 9. The shape of the side wall 10 corresponds to the shape of the connection position of the external mechanism. The side of the side wall 10 connected with the wrapping layer 9 is kept smooth, and the inside is perforated for weight reduction. The wrapping layer 9 is provided with the air spring support assembly 13 and the air spring support assembly 14 corresponding to the position of the air spring.

[0040] Although the present application is disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be defined by the scope defined by the claims of the present application.

Claims

1. A composite material bolster structure, characterized by, The composite sleeper structure comprises: a gas cylinder (3), a first type of I-beam (4a), and a ventilation pipeline (15), wherein the first type of I-beam (4a) is arranged between two adjacent gas cylinders (3), the first type of I-beam (4a) has an inner cavity (42) and a through hole (44) penetrating the inner cavity (42), the through hole (44) is used for communication with an air spring, and the gas cylinder (3) is in communication with the inner cavity (42) of the first type of I-beam (4a) through the ventilation pipeline (15); the first type of I-beam (4a) comprises an upper end face, a lower end face, a left side C-shaped bending face, and a right side C-shaped bending face, the C-shaped openings of the left side C-shaped bending face and the right side C-shaped bending face are arranged opposite to each other, the upper and lower sides of the left side C-shaped bending face and the upper and lower sides of the right side C-shaped bending face are respectively in sealing connection with the upper end face and the lower end face, so as to form the inner cavity (42) of the first type of I-beam (4a), and the through hole (44) is arranged on the upper end face.

2. The composite bolster structure of Claim 1, wherein, The gas cylinder (3) is provided with a gas cylinder pipeline (31), one end of the gas cylinder pipeline (31) is in communication with the ventilation pipeline (15), and the other end is used for sucking condensed water in the gas cylinder (3).

3. The composite pillow beam structure of claim 1, wherein, The number of the gas cylinders (3) is greater than or equal to 4, the number of the first type of I-beams (4a) is greater than or equal to 2, the composite sleeper structure further comprises a second type of I-beam (4b), the second type of I-beam (4b) does not have an inner cavity, and the second type of I-beam (4b) is located between two gas cylinders (3) between two adjacent first type of I-beams (4a).

4. The composite pillow beam structure of claim 1, wherein, The inner cavity (42) of the first type of I-beam (4a) is provided with an I-beam support (43).

5. The composite pillow beam structure according to any one of claims 1 to 4, wherein, The composite sleeper structure further comprises a side support frame (5), the ventilation pipeline (15) is integrated in the side support frame (5), and the gas cylinder (3) and the first type of I-beam (4a) extend into a cavity of the side support frame (5) to be in communication with the ventilation pipeline (15).

6. The composite pillow beam structure of claim 5, wherein, The side support frame (5) comprises a first support beam (51) and a second support beam (52), adjacent first and second partitions are arranged between the first support beam (51) and the second support beam (52), the ventilation pipeline (15) penetrates the first and second partitions, and a ventilation port of the gas cylinder (3) or the first type of I-beam (4a) extends through the first support beam (51) into the first and second partitions and is in communication with the ventilation pipeline (15).

7. The composite pillow beam structure of claim 5, wherein, The composite sleeper structure further comprises a connecting beam (7) fixedly connected with the side support frame (5), the connecting beam (7) is provided with a connecting beam through hole, and the connecting beam through hole and the through hole (44) are arranged in alignment.

8. The composite pillow beam structure of claim 7, wherein, The composite sleeper structure further comprises an upper cover plate (1) and a lower cover plate (2), the upper cover plate (1) and the lower cover plate (2) cover the upper and lower sides of the gas cylinder (3), and the left side or the right side of the upper cover plate (1) and the lower cover plate (2) wraps the side wall of the side support frame (5).

9. The composite pillow beam structure of claim 8, wherein, The composite pillow beam structure further comprises a winding layer (9) arranged around the outer periphery of the upper cover plate (1) and the lower cover plate (2), and a side wall (10) arranged between the winding layer (9) and the gas cylinder (3), wherein the side wall (10) is smooth on the side connected with the winding layer (9).

10. A high-speed train, characterized in that, The high-speed train comprises the composite pillow beam structure according to any one of claims 1 to 9.

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