A bolster device, a bogie and a railway vehicle

Abstract

The application discloses a sleeper beam device, a bottom frame and a railway vehicle, and relates to the technical field of sleeper beam devices, and specifically discloses a sleeper beam device, a bottom frame and a railway vehicle, which comprises a sleeper beam body, wherein the sleeper beam body is of an integrated structure, and one side of the sleeper beam body along a thickness direction is an installation surface; and a reinforcing part is connected with the installation surface and located at a central part of the sleeper beam body along a length direction.

Description

Technical Field

[0001] This invention relates to the field of sleeper beam structure technology, and more specifically, to a sleeper beam device, a base frame, and a rail vehicle. Background Technology

[0002] As a key component of the rail vehicle underframe, the sleeper beam assembly plays an important role in rail vehicles.

[0003] However, the bolster beam device in the related technology is a multi-part welded structure, for example, with up to 19 parts welded together. The large number of parts and weld joints results in large welding deformation and a large amount of adjustment; moreover, the structure is complex.

[0004] Therefore, how to reduce welding deformation and simplify the structure is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a bolster beam device that can reduce welding deformation and has a simple structure.

[0006] Another object of the present invention is to provide a base frame including the above-mentioned bolster beam device, wherein the bolster beam device has less welding deformation and a simple structure.

[0007] Another object of the present invention is to provide a rail vehicle including the above-mentioned underframe, wherein the welding deformation of the sleeper beam device of the underframe is small and the structure is simple.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A bolster device, comprising:

[0010] The bolster beam body is a one-piece molded structure, and one side of the bolster beam body along the thickness direction is the mounting surface;

[0011] The reinforcing member is connected to the mounting surface and is located at the center of the length direction of the bolster beam body.

[0012] Optionally, the bolster body includes:

[0013] The external framework, which is enclosed by shell walls to form the internal space;

[0014] An inclined stiffener is provided in the internal space, with its two ends respectively connected to the inner sides of different shell walls of the external frame, and the inclined stiffener has an included angle with each shell wall of the external frame.

[0015] Optionally, the connection position between the inclined stiffener and the mounting surface is located in the load-bearing area of ​​the bolster body, and the inclined stiffener divides the internal space into a triangular cavity and / or a trapezoidal cavity.

[0016] Optionally, the mounting surface is provided with mounting points, the shell wall on which the mounting surface is located is a mounting shell wall, the mounting shell wall includes a first thickness region and a second thickness region, the thickness of the first thickness region is greater than the thickness of the second thickness region, and the mounting points are located in the first thickness region.

[0017] Optionally, the connection point between the inclined stiffener and the mounting shell wall is located in the first thickness region.

[0018] Optionally, the thickness of the mounting shell wall corresponding to the second thickness region is greater than the thickness of the outer frame shell walls excluding the mounting shell wall.

[0019] Optionally, the two edges of the sleeper beam body on the side away from the mounting surface in the width direction are respectively provided with slots, the slots are used to overlap with the protrusion of the floor of the rail vehicle, and the protrusion is coplanar with the side of the sleeper beam body away from the mounting surface.

[0020] Optionally, the sleeper beam body is provided with floor support bars on both sides along the width direction, and the floor support bars are used to support the floor of the rail vehicle.

[0021] A base frame, comprising any one of the aforementioned bolster beam devices.

[0022] A rail vehicle including the aforementioned underframe.

[0023] The bolster device provided by the present invention has at least the following beneficial effects:

[0024] The bolster beam body is integrally molded, meaning that all structural components are formed as a single piece during manufacturing. This eliminates the need for welding multiple parts to form the bolster beam body; the overall structure only requires connecting the bolster beam body to the reinforcing members. This reduces welds by 90%, minimizing welding deformation. Compared to related technologies, most weld joints are eliminated, reducing the number of joints and their supporting structures, thus simplifying the structure and reducing weight (e.g., reducing overall weight by 30%). Furthermore, the manufacturing process is simplified from multiple steps (preliminary raw material processing → preliminary assembly and welding → adjustment → surface treatment → secondary welding → adjustment → overall processing) to a single step: raw material processing → welding → surface treatment. This simplifies the manufacturing process and reduces manufacturing difficulty and cost. Additionally, by replacing some weld locations with the bolster beam body base material, the strength of the local structure is improved, enhancing the overall load-bearing capacity of the bolster beam device. Finally, the reduced welding deformation eliminates the need for adjustments during manufacturing, significantly shortening the manufacturing cycle and reducing complexity.

[0025] The base frame provided by the present invention includes the above-mentioned bolster beam device and has at least the beneficial effects of the above-mentioned bolster beam device.

[0026] The rail vehicle provided by the present invention includes the aforementioned underframe, the aforementioned underframe including the aforementioned sleeper beam device, and has at least the beneficial effects of the aforementioned sleeper beam device. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the pillow beam device provided in a specific embodiment of the present invention;

[0029] Figure 2 for Figure 1 The left view after being flipped 180 degrees;

[0030] Figure 3 This is a schematic diagram showing the connection between the sleeper beam assembly and the floor of the rail vehicle.

[0031] Figure label:

[0032] 1-Pillow beam body; 11-External frame; 111-First shell wall; 112-Second shell wall; 113-Third shell wall; 114-Fourth shell wall; 1141-First thickness zone; 1142-Second thickness zone; 12-Slanted stiffener plate; 121-First slanted stiffener plate; 122-Second slanted stiffener plate; 123-Third slanted stiffener plate; 13-Center pin positioning hole; 14-Center pin mounting point; 15-Anti-rollover mounting point; 16-Air spring mounting point; 17-Slot; 18-Floor support; 2-Reinforcing member; 3-Floor. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The core of this invention is to provide a sleeper beam device that reduces welding deformation and has a simple structure. Another core aspect of this invention is to provide a chassis including the aforementioned sleeper beam device, which exhibits less welding deformation and a simple structure. Yet another core aspect of this invention is to provide a rail vehicle including the aforementioned chassis, where the sleeper beam device of the chassis exhibits less welding deformation and a simple structure.

[0035] Please refer to Figure 1 This invention provides a bolster beam device, including a bolster beam body 1 and a reinforcing member 2. The bolster beam body 1 is an integrally formed structure, and one side of the bolster beam body 1 along its thickness direction is a mounting surface. The reinforcing member 2 is connected to the mounting surface and is located at the center of the length direction of the bolster beam body 1.

[0036] In other words, the embodiments of the present invention employ an integrally molded bolster body 1, allowing all structural components of the bolster body 1 to be integrally formed during processing. This means that the bolster body 1 does not require welding multiple parts together; the overall structure of the bolster device only needs to connect the bolster body 1 to the reinforcing member 2. Therefore, this reduces weld seams by 90%, minimizing welding deformation. Compared to related technologies, most weld joints are eliminated, reducing the number of weld joints themselves and their required support structures, thus simplifying the structural form and reducing structural weight, for example, reducing the overall structural weight by 30%. Furthermore, from a manufacturing perspective, the manufacturing process in related technologies, which involves multiple steps such as preliminary raw material processing → preliminary assembly and welding → adjustment → surface treatment → secondary welding → adjustment → overall processing, is simplified to raw material processing → welding → surface treatment. This simplifies the manufacturing process and reduces manufacturing difficulty and cost. Additionally, by changing some weld seam locations to the bolster body 1 base material, the strength of the local structure is improved, thus enhancing the overall load-bearing capacity of the bolster device. Furthermore, due to the reduction in welding deformation, adjustment is largely unnecessary during manufacturing, significantly shortening the manufacturing cycle and reducing difficulty.

[0037] It should be noted that this embodiment does not limit the specific implementation of the integrally molded bolster body 1, as long as an integrally molded bolster body 1 can be formed. For example, the bolster body 1 is formed by extrusion profile, that is, the bolster body 1 is an integrally molded extruded profile. Of course, it can also be formed by integral machining.

[0038] Furthermore, this embodiment does not limit the specific connection method between the reinforcing member 2 and the bolster body 1, as long as the connection between the two can be achieved. For example, the reinforcing member 2 is welded and fixed to the bolster body 1.

[0039] It should be noted that this embodiment does not limit the specific structure of the bolster body 1, as long as the bolster body 1 can perform its conventional function.

[0040] like Figure 1 As shown, in some embodiments, the pillow beam body 1 includes an outer frame 11 and a diagonal stiffener 12. The outer frame 11 is enclosed by shell walls to form an internal space. The diagonal stiffener 12 is disposed in the internal space of the outer frame 11. The two ends of the diagonal stiffener 12 are respectively connected to the inner sides of different shell walls of the outer frame 11, and there is an angle between the diagonal stiffener 12 and each shell wall of the outer frame 11.

[0041] In other words, in this embodiment, inclined stiffeners 12 are installed in the internal space of the external frame 11. The inclined stiffeners 12 can not only bear vertical loads, but also assist the upper and lower surfaces of the bolster beam body 1 in transmitting longitudinal and transverse loads, thus improving the longitudinal transmission efficiency of the load on the bolster beam device.

[0042] like Figure 2 As shown, exemplarily, the outer frame 11 includes a first shell wall 111, a second shell wall 112, a third shell wall 113, and a fourth shell wall 114 forming a rectangular cylinder. The first shell wall 111 and the third shell wall 113 are arranged opposite to each other, the second shell wall 112 and the fourth shell wall 114 are arranged opposite to each other, and the first shell wall 111 and the third shell wall 113 are located in the width direction of the bolster beam body 1, while the second shell wall 112 and the fourth shell wall 114 are located in the thickness direction of the bolster beam body 1.

[0043] Furthermore, in some embodiments, the connection position between the inclined stiffener 12 and the mounting surface is located in the bearing area of ​​the pillow beam body 1, and the inclined stiffener 12 divides the internal space into triangular cavities and / or trapezoidal cavities.

[0044] It is understandable that the connection between the inclined stiffener 12 and the mounting surface is located in the load-bearing area of ​​the bolster beam body 1, which helps to ensure the effectiveness of load transfer. At the same time, the inclined stiffener 12 divides the internal space of the external frame 11 into triangular cavities and / or trapezoidal cavities, which helps to improve structural stability and makes the bolster beam body 1 less prone to deformation, thereby improving the overall structural stiffness and load transfer capacity.

[0045] like Figure 1 and Figure 2As shown, in some embodiments, the mounting surface is provided with mounting points, including a center pin positioning hole 13, a center pin mounting point 14, an anti-roll mounting point 15, and a spring mounting point 16. The center pin positioning hole 13 is located at the center of the mounting surface, the spring mounting point 16 is located at the center of the width direction of the mounting surface, the center pin mounting point 14 is located on both sides of the centerline in the width direction of the mounting surface, and the anti-roll mounting point 15 is located on both sides of the centerline in the width direction of the mounting surface; the inclined stiffener 12 includes a first inclined stiffener 121, a second inclined stiffener 122, and a third inclined stiffener 123. One end of the first inclined rib plate 121 is connected to the shell wall at the center pin positioning hole 13 and the air spring mounting point 16. The other end of the first inclined rib plate 121 intersects with one end of the second inclined rib plate 122 at the same shell wall. The other end of the second inclined rib plate 122 and one end of the third inclined rib plate 123 are located on both sides of the center pin mounting point 14 and the corresponding anti-roll mounting point 15, respectively. The other end of the third inclined rib plate 123 intersects with the floor support rib 18 at the same shell wall. The floor support rib 18 is used to support the floor 3 of the rail vehicle. The floor support rib 18 is located on the outside of the shell wall in the width direction of the outer frame 11.

[0046] It is understood that the center pin positioning hole 13, center pin mounting point 14, anti-roll mounting point 15, and air spring mounting point 16 are the main load interfaces of the bolster beam device. In this embodiment, diagonal stiffeners 12 are arranged at each load interface position to ensure the effectiveness of load transfer. Furthermore, it is understood that the center pin mounting point 14 is arranged around the center pin positioning hole 13, the anti-roll mounting point 15 is symmetrically arranged about the center pin positioning hole 13, and the air spring mounting point 16 is symmetrically arranged about the center pin positioning hole 13. Therefore, there are two first diagonal stiffeners 121, symmetrically arranged about the center pin positioning hole 13; two second diagonal stiffeners 122, symmetrically arranged about the center pin positioning hole 13; and two third diagonal stiffeners 123, symmetrically arranged about the center pin positioning hole 13. Furthermore, as can be seen from the above connection method of the first inclined rib plate 121, the second inclined rib plate 122 and the third inclined rib plate 123, the two first inclined rib plates 121 and the second shell wall 112 form a triangular cavity; the first inclined rib plate 121, the second inclined rib plate 122 and the fourth shell wall 114 form a triangular cavity; the second inclined rib plate 122, the fourth shell wall 114, the third inclined rib plate 123, the third shell wall 113 and the second shell wall 112 form a cavity similar to a trapezoid.

[0047] The center pin positioning hole 13 is located at the center of the mounting surface. The load at the center pin positioning hole 13 is vertical and lateral. The vertical and lateral loads transmitted by the center pin installed at the center pin positioning hole 13 can be directly transmitted to other parts of the pillow beam body 1 by the first inclined stiffener 121. Since the triangular cavity formed by the two first inclined stiffeners 121 and the second shell wall 112 has stability, it enhances the support capacity of the horizontal plane at the bottom of the triangular cavity (i.e., the second shell wall 112).

[0048] The air spring mounting point 16 is located at the center of the width direction of the mounting surface. The load is vertical. The vertical load transmitted by the air spring can be directly transmitted to other parts of the pillow beam body 1 by the first inclined stiffener 121. Since the triangular cavity formed by the two first inclined stiffeners 121 and the second shell wall 112 has stability, it enhances the support capacity of the horizontal plane at the bottom of the triangular cavity (i.e., the second shell wall 112).

[0049] The center pin mounting point 14 is located on both sides of the centerline in the width direction of the mounting surface. The load forms are vertical and longitudinal. A diagonal rib plate 12 is provided on each side of the center pin mounting point 14, namely the second diagonal rib plate 122 and the third diagonal rib plate 123. One end of the second diagonal rib plate 122 is located on one side of the center pin mounting point 14, and the other end intersects with the first diagonal rib plate 121. One end of the third diagonal rib plate 123 is located on the other side of the center pin mounting point 14, and the other end intersects with the floor support rib 18. The triangular cavity formed by the intersection of the second diagonal rib plate 122 and the first diagonal rib plate 121 has improved the rigidity and load transmission capacity. The intersection of the third diagonal rib plate 123 and the floor support rib 18 can provide support for the installation of the floor 3 of the rail vehicle, and at the same time transfer the load to the floor 3 of the rail vehicle.

[0050] The anti-roll mounting points 15 are located on both sides of the centerline in the width direction of the mounting surface, and the load is vertical. An inclined rib plate 12 is provided on each side of the anti-roll mounting points 15, namely the second inclined rib plate 122 and the third inclined rib plate 123. One end of the second inclined rib plate 122 is located on one side of the center pin mounting point 14, and the other end intersects with the first inclined rib plate 121. One end of the third inclined rib plate 123 is located on the other side of the center pin mounting point 14, and the other end intersects with the floor support rib 18. The triangular cavity formed by the intersection of the second inclined rib plate 122 and the first inclined rib plate 121 has improved the rigidity and load transfer capacity. The intersection of the third inclined rib plate 123 and the floor support rib 18 can provide support for the installation of the floor 3 of the rail vehicle, and at the same time transfer the load to the floor 3 of the rail vehicle.

[0051] In addition, such as Figure 3As shown, to further reduce structural weight while ensuring structural strength, in some embodiments, the mounting surface is provided with mounting points. The shell wall on which the mounting surface is located is a mounting shell wall, which includes a first thickness region 1141 and a second thickness region 1142. The thickness of the first thickness region 1141 is greater than the thickness of the second thickness region 1142, and the mounting points are located in the first thickness region 1141. Figure 2 and Figure 3 As shown, exemplarily, the mounting shell wall is a fourth shell wall 114.

[0052] In other words, this embodiment optimizes the wall thickness of the bolster body 1 based on the structural stress characteristics of the bolster beam device. The thickness of the shell wall corresponding to the mounting surface (i.e., the mounting shell wall) is divided into a first thickness region 1141 and a second thickness region 1142. The thickness of the first thickness region 1141 is greater than that of the second thickness region 1142. The mounting point is located in the first thickness region 1141. That is, the wall thickness of the mounting shell wall at the mounting point is greater than the wall thickness at the non-mounting point position. In other words, the mounting shell wall retains a larger wall thickness at the mounting point, while the portion outside the mounting point is thinned. Since the bolster body 1 is a one-piece molded structure, the strength of its base material is much higher than that of welded structures in related technologies, thus ensuring structural strength. Moreover, the larger wall thickness at the stress points improves the structural strength at these points. Thinning the wall thickness at non-mounting points reduces the structural weight. In other words, this embodiment is beneficial for further reducing structural weight while ensuring structural strength.

[0053] It should be noted that the first thickness region 1141 and the second thickness region 1142 are just terms used to distinguish them due to their different thicknesses. The first thickness region 1141 can be a discontinuous region, and the second thickness region 1142 can also be a discontinuous region. That is, the mounting shell wall can have multiple first thickness regions 1141 and multiple second thickness regions 1142.

[0054] Furthermore, such as Figure 3 As shown, in some embodiments, the connection point between the inclined stiffener 12 and the mounting shell wall is located in the first thickness region 1141.

[0055] In other words, in this embodiment, the connection position between the inclined stiffener 12 and the mounting shell wall is set in the first thickness region 1141. That is, the end point of the inclined stiffener 12 is close to the stress point, so the inclined stiffener 12 can transmit the load more effectively.

[0056] In addition, in some embodiments, the thickness of the mounting shell wall corresponding to the second thickness region 1142 is greater than the thickness of the outer frame 11 shell wall excluding the mounting shell wall.

[0057] In other words, in this embodiment, the reduced wall thickness of the mounting shell wall is greater than the wall thickness of the outer frame 11 other than the mounting shell wall. This helps to ensure that the overall wall thickness of the mounting shell wall meets the stress requirements, while reducing the wall thickness of other shell walls other than the mounting shell wall helps to further reduce the structural weight.

[0058] In addition, such as Figure 2 and Figure 3 As shown, in some embodiments, the two edges of the sleeper beam body 1 in the width direction on the side away from the mounting surface are respectively provided with slots 17. The slots 17 are used to overlap with the protrusion of the floor 3 of the rail vehicle. The protrusion is coplanar with the side of the sleeper beam body 1 away from the mounting surface.

[0059] In other words, this embodiment provides slots 17 at the two edges of the side of the sleeper beam body 1 away from the mounting surface in the width direction, forming an interface for connecting with the floor 3 of the rail vehicle. The protruding part of the floor 3 of the rail vehicle overlaps with the slots 17 to achieve horizontal docking, which reduces the number of welds compared to related technologies.

[0060] In addition, such as Figure 2 and Figure 3 As shown, in some embodiments, the bolster body 1 is provided with floor support bars 18 on both sides along the width direction, and the floor support bars 18 are used to support the floor 3 of the rail vehicle.

[0061] In other words, in this embodiment, the floor support 18 is used to support the floor 3 of the rail vehicle. The floor support 18 is integrally formed with the sleeper beam body 1, which reduces welds and improves the structural load-bearing capacity.

[0062] In addition to the aforementioned bolster beam device, the present invention also provides a base frame including the bolster beam device disclosed in the above embodiments. For the structure of other parts of the base frame, please refer to the relevant technology, which will not be repeated here.

[0063] The key point of this embodiment is that the base frame adopts the bolster beam device disclosed in any of the above embodiments, so that the base frame has at least the beneficial effects of the bolster beam device, which will not be elaborated here.

[0064] In addition to the aforementioned sleeper beam device and underframe, the present invention also provides a rail vehicle including the underframe disclosed in the above embodiments. For the structure of other parts of the rail vehicle, please refer to the relevant technology, which will not be repeated here.

[0065] The key point of this embodiment is that the rail vehicle includes the aforementioned underframe, and the aforementioned underframe adopts the bolster beam device disclosed in any of the aforementioned embodiments. Therefore, the rail vehicle has at least the beneficial effects of the aforementioned bolster beam device, which will not be elaborated further here.

[0066] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] The bolster beam device, underframe, and rail vehicle provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A bolster beam device, characterized in that, include: The pillow beam body (1) is an integrally formed structure, and one side of the pillow beam body (1) along the thickness direction is the mounting surface; The reinforcing member (2) is connected to the mounting surface and is located at the center of the length direction of the pillow beam body (1).

2. The bolster beam device according to claim 1, characterized in that, The pillow beam body (1) includes: The outer frame (11) is enclosed by the shell wall to form the internal space; An inclined rib (12) is provided in the internal space, and its two ends are respectively connected to the inner sides of different shell walls of the external frame (11), and there is an angle between the inclined rib (12) and each shell wall of the external frame (11).

3. The bolster beam device according to claim 2, characterized in that, The connection position between the inclined stiffener plate (12) and the mounting surface is located in the bearing area of ​​the pillow beam body (1), and the inclined stiffener plate (12) divides the internal space into a triangular cavity and / or a trapezoidal cavity.

4. The bolster beam device according to claim 2, characterized in that, The mounting surface is provided with mounting points, and the shell wall on which the mounting surface is located is a mounting shell wall. The mounting shell wall includes a first thickness region (1141) and a second thickness region (1142). The thickness of the first thickness region (1141) is greater than the thickness of the second thickness region (1142). The mounting points are located in the first thickness region (1141).

5. The bolster beam device according to claim 4, characterized in that, The connection point between the inclined stiffener (12) and the mounting shell wall is located in the first thickness region (1141).

6. The bolster beam device according to claim 4, characterized in that, The thickness of the mounting shell wall corresponding to the second thickness region (1142) is greater than the thickness of the outer frame (11) shell wall excluding the mounting shell wall.

7. The bolster beam device according to any one of claims 1-6, characterized in that, The sleeper beam body (1) has two grooves (17) on its two edges in the width direction on the side away from the mounting surface. The grooves (17) are used to overlap with the protrusion of the floor (3) of the rail vehicle. The protrusion is coplanar with the side of the sleeper beam body (1) away from the mounting surface.

8. The bolster beam device according to any one of claims 1-6, characterized in that, The bolster body (1) is provided with floor support bars (18) on both sides along the width direction. The floor support bars (18) are used to support the floor (3) of the rail vehicle.

9. A base frame, characterized in that, Includes the bolster beam device as described in any one of claims 1-8.

10. A rail vehicle, characterized in that, Includes the base frame as described in claim 9.

Images