WO2021068541A1

WO2021068541A1 - Bogie

Info

Publication number: WO2021068541A1
Application number: PCT/CN2020/095613
Authority: WO
Inventors: 孙秀宇; 李辰生; 于云海; 张�杰; 张晓红; 王波
Original assignee: 中车唐山机车车辆有限公司
Priority date: 2019-10-10
Filing date: 2020-06-11
Publication date: 2021-04-15
Also published as: CN112644543B; CN112644543A

Abstract

Disclosed is a bogie, comprising a framework (100) and a secondary suspension device (200), wherein the secondary suspension device (200) is mounted on the framework (100); the framework (100) comprises a rigid framework main body (111), and a composite material layer (112), the composite material layer (112) being at least fixed in an outer surface of the framework main body (111) at a position for fixing a bogie mounting seat (152), and the composite material layer (112) being used for separating the bogie mounting seat (152) from the framework main body (111); and the framework (100) serves as a mounting foundation of the bogie, the bogie mounting base (152) is used for mounting various components of the bogie, and the top of the secondary suspension device (200) is used for connection to a vehicle body. The technical problem of high vibration between the framework and components of the bogie in the bogie is solved.

Description

A kind of bogie

Technical field

This application relates to the technical field of rail vehicles, in particular to a bogie.

Background technique

Rail vehicles are an important transportation link connecting cities. Rail vehicles mainly include a car body and a bogie arranged below the car body. The bogie is used to carry the car body and realize the running and steering functions.

Traditional bogies mainly include: frame, wheel set, traction device, braking device and buffer device, power bogie also includes driving device. Among them, the frame is the main frame of the bogie, and many parts of the bogie are fixed to the frame by metal bogie mounting seats. The traditional frame is an H-shaped frame formed by welding stainless steel materials. The rigid connection between the components of the bogie and the frame results in greater vibration of the bogie, which in turn leads to lower comfort of the rail train.

Therefore, the vibration between the frame in the bogie and the components of the bogie is large, which is an urgent technical problem to be solved by those skilled in the art.

The above-mentioned information disclosed in the background art is only used to strengthen the understanding of the background of the present application, and therefore it may contain information that does not form the relevant technology known to those of ordinary skill in the art.

Summary of the invention

The embodiment of the present application provides a bogie frame to solve the technical problem of large vibration between the frame in the bogie and the components of the bogie.

The embodiment of the application provides a bogie, including a frame and a secondary suspension device, the secondary suspension device is installed on the frame; the frame includes:

Rigid frame main body;

The composite material layer is fixed at least on the outer surface of the frame body for fixing the position of the bogie mounting seat, and the composite material layer is used to separate the bogie mounting seat and the frame body ；

Wherein, the frame is used as an installation foundation of the bogie, the bogie mounting seat is used to install various components of the bogie, and the top of the secondary suspension device is used to connect with the vehicle body.

Due to the adoption of the above technical solutions, the embodiments of this application have the following technical effects:

First, the second-series suspension device is installed on the frame, and the vertical force of the car body is transmitted to the frame through the second-series suspension device; secondly, the rigid frame body is the bogie frame itself as the installation foundation of the bogie, Provide sufficient rigidity; secondly, the positions for fixing the bogie mounting seat on the outer surface of the frame body are all fixed with a composite material layer, then after the frame and the bogie mounting seat are installed, the bogie mounting seat and the frame There is at least one layer of composite material between the main bodies. The composite material layer itself has good vibration absorption and energy absorption, which can reduce the vibration between the frame and the components of the bogie in the embodiment of the present application.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

Figure 1 is a schematic diagram of a bogie according to an embodiment of the application;

Fig. 2 is a schematic diagram of another angle of the bogie shown in Fig. 1;

Figure 3 is a schematic diagram of a bogie frame in an embodiment of the application;

Figure 4 is a cross-sectional view of Figure 3 at the frame beam;

Figure 5 is an exploded view of Figure 3;

Fig. 6 is a cross-sectional view of one of the inserts of Fig. 3.

Description of reference signs:

100 frame, 111 frame main body, 112 composite material layer,

121 frame longitudinal beam, 121-1 horizontal mounting plate, 121-2 giving way,

122 frame beam, 122-1 traction device installation hole,

130 insert, 131 middle fixing seat, 132 fixing flange,

141 the first step of the stepped depression, 142 the second step of the stepped depression,

152 bogie mounting seat;

200 second series suspension device.

Detailed ways

In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and Not all examples are exhaustive. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict.

Example one

This embodiment provides a bogie, which can be applied to rail vehicles. The rail vehicles may be diesel locomotives or electric locomotives, and may be EMUs, subways, light rails, or trams.

Fig. 1 is a schematic diagram of a bogie according to an embodiment of the application; Fig. 2 is a schematic diagram of another angle of the bogie shown in Fig. 1; Fig. 3 is a schematic diagram of a bogie frame of an embodiment of the application; Fig. 4 is a diagram 3 Sectional view at the beam of the frame.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the bogie of the embodiment of the present application includes a frame 100 and a secondary suspension device 200, and the secondary suspension device 200 is installed on the frame 100; The framework 100 includes:

Rigid frame main body 111;

The composite material layer 112 is fixed at least on the outer surface of the frame body for fixing the position of the bogie mounting seat, and the composite material layer is used to separate the bogie mounting seat and the bogie mounting seat. Framework main body;

In the bogie of the embodiment of the present application, firstly, the secondary suspension device is installed on the frame, the vertical force of the car body is transmitted through the secondary suspension device to the frame; secondly, the rigid frame body is the frame of the bogie As the installation foundation of the bogie, it provides sufficient rigidity; secondly, the position for fixing the bogie mounting seat on the outer surface of the frame body is fixed with a composite material layer, then after the frame and the bogie mounting seat are installed, There is at least one composite material layer between the bogie mounting seat and the frame body. The composite material layer itself has good vibration absorption and energy absorption, which can reduce the gap between the frame in the bogie and the components of the bogie in the embodiment of the application. Vibration.

Regarding the secondary suspension device, as shown in Figures 1 and 2, the secondary suspension device is an air spring.

Regarding the structure of the frame, in implementation, as shown in FIG. 4, the composite material layer 112 wraps the entire outer surface of the frame body.

In this way, the whole frame is a rigid frame body inside, and the outer layer is wrapped around the entire outer surface of the frame body, which is a sandwich structure frame. In this way, when a certain bogie mounting seat exerts a pulling or squeezing force on the composite material layer, it will be transmitted to the entire composite material layer, the effect of the force is more dispersed, and the structure is stronger.

In practice, the composite material layer is an integrated structure. The composite material layer of the integrated structure makes the structure stronger as a whole, and at the same time, it also disperses the effect of force to the greatest extent.

The materials of the framework are described below.

In practice, the composite material layer is a composite material layer of carbon fiber material.

As a new material, carbon fiber material has the advantages of low density, high strength, good energy absorption, good vibration absorption, and excellent technology. The composite material layer of carbon fiber material also has the above advantages. The application of the new material of carbon fiber material to frame products is one of the development directions of frame. In order to adapt to this development direction, the structure of the framework needs to be adaptively improved.

In practice, the composite material layer is adhered to the outer surface of the frame body. Through bonding, the conforming material layer can be conveniently fixed on the entire outer surface of the frame body.

In practice, the frame body is a frame body made of a metal material with low density and high strength. In this way, the weight of the frame is small, which in turn makes the weight of the bogie also small.

As an optional manner, the frame body is a frame body made of honeycomb aluminum material. The aluminum honeycomb material has low density and high strength, which ensures that the strength of the main body of the frame is large enough, and at the same time, the weight of the main body of the frame is small.

The shape of the frame will be described below.

In implementation, as shown in FIG. 3, the frame 100 is a cross-shaped frame, including a frame longitudinal beam 121 along the longitudinal direction and a frame beam 122 intersecting the frame longitudinal beam;

There are two air springs, which are installed symmetrically on the frame cross beam 122;

Wherein, the longitudinal direction is the running direction of the bogie.

In the traditional H-shaped frame, the side beams are densely connected with multiple components of the bogie. After the bogie is placed on the track, there are multiple components of the bogie densely near the running rail of the track. The cross-shaped frame, the frame longitudinal beam is located in the middle of the frame beam, and the frame longitudinal beam is connected with multiple parts of the bogie; after the bogie is placed on the track, there are more parts of the bogie between the two running rails. The components of the bogie near the running rail are reduced, which is beneficial to the utilization of the space between the two wheel pairs of the bogie.

In implementation, as shown in FIG. 3, the frame longitudinal beam 121 has a shape with high and low ends at both ends, and both ends of the frame longitudinal beam 121 are used to connect with the primary suspension system of the bogie.

The connection between the two ends of the frame longitudinal beam and the primary suspension system of the bogie requires a relatively large height. The frame longitudinal beam has a shape with a high at both ends and a low middle part to meet this requirement.

As an optional manner, as shown in FIG. 3, the frame longitudinal beam 121 includes:

Horizontal mounting plates 121-1 located at both ends of the longitudinal direction and arranged horizontally, the horizontal mounting plates 121-1 are higher than the frame cross beam 122;

Connected to the relief portion 121-2 between the horizontal mounting plate and the frame cross beam.

In this way, the shape characteristics of the high end and low middle of the longitudinal beam of the frame are embodied into a regular shape, which is convenient for the processing and manufacturing of the frame.

In implementation, as shown in Fig. 3, the frame longitudinal beam 121 gradually increases in thickness from both ends to the middle.

The thickness of the frame longitudinal beams gradually increases from both ends to the middle part, which can adapt to the characteristic that the middle part of the frame longitudinal beams bears a large load.

In implementation, as shown in Fig. 3, the frame longitudinal beam 121 gradually increases in width from both ends to the middle.

The characteristic that the width of the frame longitudinal beam gradually increases from the two ends to the middle part can adapt to the characteristic that the middle part of the frame longitudinal beam bears relatively large weight.

In implementation, as shown in FIG. 3, the frame 100 is a symmetrical structure.

The symmetrical structure of the frame is convenient for processing and manufacturing, and it is also convenient for the balance of forces.

In implementation, as shown in FIG. 3, a traction device installation hole 122-1 is provided at the center of the frame beam, and the traction device installation hole 122-1 is used to install the traction device of the bogie.

The following describes how the bogie mounting seat is fixed to the frame. Fig. 5 is an exploded view of Fig. 3; Fig. 6 is a cross-sectional view of one of the inserts of Fig. 3.

In implementation, as shown in Figure 5 and Figure 6, the framework also includes:

A rigid insert 130. The bottom of the insert 130 is located within the composite material layer 112 to fix the insert and the composite material layer and expose the top of the insert 130; namely, the insert and The main body of the framework is separated by the bottom layer of the composite material layer;

Wherein, the top of the insert is used to install the bogie mounting seat 152.

In this way, the rigid insert is fixed to the composite material layer to solve the problem of fixing the insert, and the bogie mounting seat 152 is installed on the top of the insert, which solves the problem of fixing the bogie mounting seat. As a common method, the bogie mounting seat 152 is fixed on the top of the insert through bolts and bolt holes. Figure 3 shows a bogie mounting seat 152 of multiple structures and a plurality of structural inserts 130. The structure of the insert 130 and the structure of the bogie mounting seat 152 matched therewith can be used to fix the bogie mounting seat. Just on the top of the insert.

Regarding the structure of the insert, as shown in Figures 5 and 6, the insert includes:

The middle fixing seat 131 in the center;

A fixing flange 132 that extends outward from the middle fixing seat 131, and the thickness of the middle fixing seat is greater than the thickness of the fixing flange;

The composite material layer covers the fixing flange 132 and exposes the top of the middle fixing seat 131;

Wherein, the top of the middle fixing seat is used to install the bogie mounting seat 152.

In this way, the fixing flange makes the fixed area of the insert and the composite material layer larger, the insert and the composite material layer are fixed firmly, and the thickness of the middle fixing seat is greater than the thickness of the flange, so that the middle fixing seat and the bogie mounting seat are The fixation is firmer.

Cooperating with the structure of the insert, as shown in FIGS. 5 and 6, the frame body and the composite material layer have stepped recesses that cooperate with the insert;

The bottom of the step-shaped recessed portion matches the shape of the middle fixing seat;

The first step 141 of the step-shaped recess is matched with the shape of the fixing flange.

The presence of the step-shaped recess allows the height of the insert to be controlled to match the height of the bogie mounting seat.

In implementation, as shown in FIG. 6, the second step 142 of the step-shaped recess is level with the top of the fixing flange.

In implementation, as shown in FIGS. 5 and 6, the fixing flange 132 is arranged at the middle or bottom of the side of the middle fixing seat.

In implementation, as shown in FIG. 6, the ratio of the thickness of the middle fixing seat to the thickness of the fixing flange is at least twice. The thickness of the middle fixing seat is larger, and the fixing with the bogie mounting seat through bolts and bolt holes can be more stable; the thickness of the fixing flange is thin, so that the weight of the insert is smaller.

As an optional embodiment, the insert is an insert made of honeycomb aluminum material.

As an optional embodiment, the insert is an insert made of a metal material with low density and high strength. Specifically, the insert is an insert made of honeycomb aluminum material.

The honeycomb aluminum material has a low density and high strength, which ensures that the strength of the insert is large enough, and at the same time, the weight of the insert is small.

In the description of this application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe the application and simplify the description, instead of indicating or implying that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

In this application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, they can be fixed. The connection can also be detachable or integrated; it can be mechanical, electrical, or communication; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. Or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In this application and its embodiments, unless expressly stipulated and defined otherwise, the "upper" or "lower" of the first feature of the second feature may include direct contact between the first and second features, or include the first feature. The second feature is not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature include the first feature directly above and obliquely above the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The above disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are only examples, and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

Although some optional embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including some optional embodiments and all changes and modifications falling within the scope of the present application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A bogie, characterized by comprising a frame and a secondary suspension device, the secondary suspension device is installed on the frame; the frame includes:

Rigid frame main body;

The composite material layer is fixed at least on the outer surface of the frame body for fixing the position of the bogie mounting seat, and the composite material layer is used to separate the bogie mounting seat and the frame body ；

Wherein, the frame is used as an installation foundation of the bogie, the bogie mounting seat is used to install various components of the bogie, and the top of the secondary suspension device is used to connect with the vehicle body.
The bogie according to claim 1, wherein the secondary suspension device is an air spring.
The bogie according to claim 2, wherein the composite material layer wraps the entire outer surface of the frame body.
The bogie according to claim 3, wherein the composite material layer is an integrated structure.
The bogie according to claim 3, wherein the composite material layer is a composite material layer of carbon fiber material.
The bogie according to claim 5, wherein the composite material layer is adhered to the outer surface of the frame body.
The bogie according to claim 5, wherein the frame body is a frame body made of a metal material with low density and high strength.
The bogie according to claim 5, wherein the frame body is a frame body made of honeycomb aluminum material.
The bogie according to any one of claims 2 to 8, wherein the frame is a cross-shaped frame, comprising a frame longitudinal beam along the longitudinal direction and a frame beam intersecting the frame longitudinal beam;

There are two air springs, which are installed symmetrically on the frame beam;

Wherein, the longitudinal direction is the running direction of the bogie.
The bogie according to claim 9, wherein the longitudinal beams of the frame have a shape with high ends and low middle parts;

Wherein, both ends of the longitudinal beams of the frame are used to connect with the primary suspension system of the bogie.
The bogie according to claim 10, wherein the frame longitudinal beam comprises:

Horizontal mounting plates located at both ends of the longitudinal direction and arranged horizontally, the horizontal mounting plates are higher than the frame beams;

Connected to the relief portion between the horizontal mounting plate and the frame cross beam.
The bogie according to claim 11, wherein the longitudinal beams of the frame gradually increase in thickness from both ends to the middle.
The bogie according to claim 12, wherein the longitudinal beams of the frame gradually increase in width from both ends to the middle.
The bogie according to claim 13, wherein the frame is a symmetrical structure.
The bogie according to claim 14, wherein a traction device installation hole is provided at a center position of the frame cross beam, and the traction device installation hole is used to install the traction device of the bogie.
The bogie according to claim 15, further comprising:

A rigid insert, the bottom of the insert is located within the composite material layer to fix the insert and the composite material layer and expose the top of the insert;

Wherein, the top of the insert is used to install the bogie mounting seat.
The bogie according to claim 16, wherein the insert includes:

The middle fixing seat located in the middle;

A fixing flange, the fixing flange extends outward from the middle fixing seat, and the thickness of the middle fixing seat is greater than the thickness of the fixing flange;

The composite material layer covers the fixing flange and exposes the top of the middle fixing seat;

Wherein, the top of the middle fixing seat is used to install the bogie mounting seat.
The bogie according to claim 17, wherein the frame body and the composite material layer have stepped recesses that cooperate with the inserts;

The bottom of the step-shaped recessed portion matches the shape of the middle fixing seat;

The first step of the stepped recess is matched with the shape of the fixing flange.
The bogie according to claim 18, wherein the second step of the stepped recess is level with the top of the fixing flange.
The bogie according to claim 19, wherein the fixing flange is arranged at the middle or the bottom of the side of the middle fixing seat.
The bogie according to claim 20, wherein the ratio of the thickness of the middle fixing seat to the thickness of the fixing flange is at least twice.
The bogie according to claim 21, wherein the insert is an insert of honeycomb aluminum material.