A combination structure of a waistband type air spring and a bolster and a vehicle bogie

Abstract

The application discloses a waistband type air spring and a combination structure of a bolster, and the combination structure comprises the waistband type air spring and the bolster, wherein the bolster is provided with a through hole at a bolster lower cover plate, the air spring is inverted and the bottom of the air spring penetrates through the through hole, and the air spring is partially embedded in the interior of the bolster. The application also provides a vehicle bogie comprising the combination structure of the waistband type air spring and the bolster and a bogie side beam, and the top of the air spring is fixedly connected with the bogie side beam below. Compared with the prior art, the combination structure of the waistband type air spring and the bolster and the vehicle bogie have the advantages that the bending degree of the bolster can be designed to be smaller, the gap between the bolster and a bolster beam of a bogie frame is increased, the operation space of mounting bolts between a rotary support and a vehicle body is larger, and the mounting of fasteners is facilitated. Meanwhile, the smaller bending angle reduces the stress at the bending position, and the safety during the operation of the vehicle is improved.

Description

Technical Field

[0001] This invention belongs to the field of vehicles, specifically relating to a combination structure of a belt-type air spring and a bolster, and a vehicle bogie. Background Technology

[0002] The function of the bolster is to transfer the force exerted by the car body on the slewing support to the air springs supported at both ends of it. In addition, when the vehicle passes through a curve with a small radius, the slewing support located in the middle of the bolster allows for a large yaw angle between the bogie and the car body, significantly reducing the horizontal deformation of the air springs and improving the vehicle's curve clearance ability.

[0003] The current bolster-equipped bogies suffer from several drawbacks: the distance between the bolster surface and the car body underframe is too small, resulting in significant bolster bending and insufficient strength margin. Furthermore, the space for mounting bolts between the slewing bearing outer ring and the underframe is too limited, making installation inconvenient. These shortcomings cause problems for vehicle production, operation, and maintenance. Therefore, there is an urgent need to improve the traditional bolster-equipped bogie structure by reducing bolster bending and lowering the bolster surface height to provide sufficient space between the bolster surface and the car body underframe. This would improve the accessibility of the slewing bearing installation, lower the traction point height, reduce axle load transfer during operation, and ensure full utilization of traction force. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the purpose of this invention is to provide a combination structure of belt-type air spring and bolster and a vehicle bogie, which can increase the vertical movement clearance between the upper plane of the bolster and the vehicle body chassis.

[0005] The technical solution provided by this invention is as follows:

[0006] A combination structure of a belt-type air spring and a rocker arm includes a belt-type air spring and a rocker arm, wherein the rocker arm has a through hole at its lower cover plate, and the air spring is inverted with its bottom passing through the through hole, so that the air spring is partially embedded inside the rocker arm.

[0007] Preferably, the air spring includes an emergency spring, which is partially embedded inside the bolster and supported on the bolster cover plate.

[0008] Preferably, the air spring further includes an airbag, a mounting base, and an emergency spring support plate. The mounting base is located above the airbag, the emergency spring support plate is fixed to the upper part of the mounting base, the emergency spring surrounds the mounting base, and its upper surface abuts against the emergency spring support plate. The emergency spring support plate is fixed to the upper cover plate of the rocker bolster.

[0009] Preferably, the emergency spring support plate is embedded in the upper cover plate of the bolster.

[0010] Preferably, the emergency spring support plate is provided with a horizontal air inlet extending to the end to connect to the ventilation cylinder, and the mounting base is provided with a horizontal transition airway and a vertical transition airway connected together. The horizontal transition airway is connected to the horizontal air inlet, and the vertical transition airway is connected to the airbag, forming an air pipeline so that the gas in the air cylinder can enter the airbag along the horizontal air inlet, the horizontal transition airway, and the vertical transition airway.

[0011] Preferably, the emergency spring support plate includes a circular main body and an elongated connecting part, the elongated connecting part being connected to the outer edge of the circular main body, and the horizontal air intake extending from the end of the elongated connecting part to the middle of the circular main body.

[0012] Preferably, the lower part of the middle position of the circular main body is provided with a downward-opening groove, and the upper end of the mounting base extends into the groove so that the horizontal transition air passage is connected to the horizontal air intake passage.

[0013] Preferably, the emergency spring has a boss inside, and the boss has a gas channel. The lower part of the mounting base has a corresponding receiving hole, and the boss is embedded in the receiving hole. The gas channel is connected to the vertical connecting air channel, so that gas enters the airbag through the gas channel.

[0014] A vehicle bogie includes a combination structure of a belt-type air spring and a bolster as described above, and a bogie side beam, wherein the top airbag panel of the air spring is fixedly connected to the lower bogie side beam.

[0015] Compared with related technologies, the beneficial effects of the present invention are as follows:

[0016] 1. The combined structure of the belt-type air spring and bolster, and the vehicle bogie, eliminates the traditional forward mounting method of the air spring. A through hole is opened in the lower cover plate of the bolster, and utilizing the characteristic of the air spring being larger at the top and smaller at the bottom, the air spring is installed upside down with its bottom passing through the through hole. Because the air spring is partially embedded inside the bolster, the curvature of the bolster can be designed to be smaller, increasing the gap between the bolster and the underframe bolster beam. This provides more operating space for the mounting bolts between the slewing bearing and the vehicle body, facilitating the installation of fasteners. Simultaneously, the smaller bending angle reduces stress at the bending point, improving the safety of the vehicle during operation.

[0017] 2. The emergency spring is partially inserted into the bolster, allowing it to rest on the bolster cover. This installation method reduces the overall weight of the bogie and increases the vertical clearance between the bolster's upper surface and the car body underframe, thereby reducing the traction point height and improving the efficiency of the vehicle's traction force.

[0018] 3. The integrated air spring mounting base and air pipeline extend along the upper cover of the bolster to the end, making the overall structure more compact. Attached Figure Description

[0019] Figure 1 This is a sectional view of an existing bogie with a bolster.

[0020] Figure 2 This is a cross-sectional view of a vehicle bogie according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0022] Figure 4 for Figure 2 The diagram shows a top view of the connection between the air spring and the bolster in the vehicle bogie.

[0023] In the attached diagram: 1-bolster beam surface, 2-bolster, 3-air pipe, 4-protrusion, 5-emergency spring, 6-belt-type air spring, 7-bogie side beam, 8-through hole, 9-mounting seat, 10-slewing support, 11-bolster-body connection bolt, 12-airbag, 13-emergency spring support plate, 21-bolster upper cover plate, 22-bolster lower cover plate. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0028] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0029] like Figures 2 to 4 As shown, this embodiment of the invention provides a vehicle bogie, including a bolster 2, a belt-type air spring 6, a bogie side beam 7, a slewing support 10, and other structures. The belt-type air spring 6 and the bolster 2 form a combined structure of a belt-type air spring and a bolster, and the top airbag panel of the air spring 6 is fixedly connected to the lower bogie side beam 7.

[0030] In this embodiment, the rocker 2 includes an upper cover plate 21 and a lower cover plate 22. The lower cover plate 22 has a circular through hole 8. The air spring 6 is inverted and its bottom passes through the through hole 8, so that the air spring 6 is partially embedded inside the rocker 2.

[0031] In this embodiment, the air spring 6 includes an emergency spring 5, an airbag 12, a mounting base 9, and an emergency spring support plate 13. The mounting base 9 is located above the emergency spring 5, and the emergency spring support plate 13 is fixed to the upper part of the mounting base 9. The emergency spring 5 surrounds the mounting base 9, and its upper surface abuts against the emergency spring support plate 13. The emergency spring support plate 13 is fixed to the rocker bolster 2's upper cover plate 21. Thus, the emergency spring 5 is partially embedded inside the rocker 2 and supported on the rocker bolster 2's upper cover plate 21. In this embodiment, the emergency spring support plate 13 is embedded in the rocker bolster 2's upper cover plate 21 (i.e., the rocker bolster 21 has a slot with the same outline as the emergency spring support plate 13), and its upper surface is basically flush with the upper surface of the rocker bolster 21.

[0032] In this embodiment, the emergency spring support plate 13 is roughly shaped like a ping-pong paddle, including a circular main body and a long strip connecting part, which is connected to the outer edge of the circular main body. The emergency spring support plate 13 has a horizontal air intake extending to its end to connect to the ventilation cylinder. This horizontal air intake extends from the end of the long strip connecting part to the middle of the circular main body. The mounting base 9 has a connected horizontal transition air passage and a vertical transition air passage. The horizontal transition air passage connects to the horizontal air intake, and the vertical transition air passage connects to the airbag 12, forming an air pipe 3, allowing gas in the ventilation cylinder to enter the airbag 12 (e.g., ...) along the horizontal air intake, horizontal transition air passage, and vertical transition air passage. Figure 3 (As indicated by the arrow).

[0033] In this embodiment, the lower part of the circular body of the emergency spring support plate 13 is provided with a downward-opening groove, and the upper end of the mounting base 9 extends into the groove so that the horizontal transition air passage is connected to the horizontal air intake passage.

[0034] In this embodiment, the emergency spring 5 is provided with a boss 4, and the boss 4 is provided with a gas channel (unlabeled). The mounting base 9 is provided with a corresponding receiving hole (unlabeled) at the bottom. The boss 4 is embedded in the receiving hole. The gas channel is connected to the vertical connecting air channel, so that the gas enters the airbag 12 through the gas channel.

[0035] contrast Figure 1 and Figure 2 As can be seen, in this embodiment, the distance A between the bolster 2 and the vehicle body beam surface 1 is longer than the distance C in the traditional structure. At the same time, the bending angle θ of the bolster 2 is smaller than the bending angle α of the traditional bolster, resulting in lower overall stress and a safer structure. Furthermore, the operating space of the bolts 11 connecting the bolster 2 and the vehicle body is increased, thereby reducing the difficulty of fastener installation.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combination of a web air spring and a bolster, comprising a web air spring and a bolster, characterized in that, The rocking pillow has a through hole at its lower cover plate, and the air spring is reversed with its bottom passing through the through hole, so that the air spring is partially embedded inside the rocking pillow; The air spring includes an emergency spring, and the air spring also includes an airbag, a mounting base, and an emergency spring support plate. The mounting base is located above the airbag, the emergency spring support plate is fixed to the upper part of the mounting base, the emergency spring surrounds the mounting base, and its upper surface abuts against the emergency spring support plate. The emergency spring support plate is fixed to the upper cover plate of the rocker bolster. The emergency spring support plate is provided with a horizontal air intake extending to the end to connect to the ventilation cylinder. The mounting base is provided with a horizontal transition air passage and a vertical transition air passage that are connected. The horizontal transition air passage is connected to the horizontal air intake, and the vertical transition air passage is connected to the airbag, forming an air pipeline so that the gas in the air cylinder can enter the airbag along the horizontal air intake, the horizontal transition air passage, and the vertical transition air passage.

2. The combined structure according to claim 1, characterized in that, The emergency spring is partially embedded inside the rocker and supported on the rocker's upper cover plate.

3. The combined structure according to claim 2, characterized in that, The emergency spring support plate is embedded in the upper cover plate of the bolster.

4. The combined structure according to claim 1, characterized in that, The emergency spring support plate includes a circular main body and an elongated connecting part. The elongated connecting part is connected to the outer edge of the circular main body, and the horizontal air intake extends from the end of the elongated connecting part to the middle of the circular main body.

5. The combined structure according to claim 4, characterized in that, The lower part of the middle position of the circular main body is provided with a downward-opening groove, and the upper end of the mounting base extends into the groove so that the horizontal transition air passage is connected to the horizontal air intake passage.

6. The combined structure according to claim 1, characterized in that, The emergency spring has a boss inside, and the boss has a gas channel. The lower part of the mounting base has a corresponding receiving hole. The boss is embedded in the receiving hole. The gas channel is connected to the vertical connecting air channel, so that gas enters the airbag through the gas channel.

7. A vehicle bogie, comprising a combination structure of a belt-type air spring and a bolster as described in any one of claims 1 to 6, and a bogie side beam, wherein the top airbag panel of the air spring is fixedly connected to the lower bogie side beam.

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