CN112644546A

CN112644546A - Framework of bogie

Info

Publication number: CN112644546A
Application number: CN201910959003.0A
Authority: CN
Inventors: 张硕; 李辰生; 王影; 霍文彪; 王铮; 张鹏
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2021-04-13
Anticipated expiration: 2039-10-10
Also published as: CN112644546B

Abstract

The embodiment of the application provides a framework of a bogie, which comprises a rigid framework main body; a composite layer secured at least in the outer surface of the frame body in a position for securing a truck mount, the composite layer for spacing the truck mount from the frame body; a rigid insert, the bottom of the insert being located within the composite layer to secure the insert to the composite layer and expose the top of the insert; the framework serves as a mounting base of the bogie, the bogie mounting seat is used for mounting each part of the bogie, and the top of the insert is used for mounting the bogie mounting seat. The technical problem that vibration between the components of the framework and the bogie is large is solved.

Description

Framework of bogie

Technical Field

The application relates to the technical field of railway vehicles, in particular to a framework of a bogie.

Background

Rail vehicles are an important traffic tie linking cities. The rail vehicle mainly includes: the bogie is used for bearing the vehicle body and realizing walking and steering functions.

The conventional bogie mainly includes: the power bogie comprises a framework, wheel pairs, a traction device, a braking device and a buffering device, and further comprises a driving device. The framework is a main framework of the bogie, and many parts of the bogie are fixed with the framework through a metal bogie mounting seat. Conventional frames are not only heavy, but the rigid connection between the components of the bogie and the frame results in greater vibration of the bogie, which in turn results in less comfort of the rail train.

Therefore, the vibration between the frame and the parts of the bogie is large, which is a technical problem that the skilled person is in urgent need to solve.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides a framework of a bogie, which aims to solve the technical problem of large vibration between the framework and a part of the bogie.

The embodiment of the application provides a framework of bogie, includes:

a rigid frame body;

a composite layer secured at least in the outer surface of the frame body in a position for securing a truck mount, the composite layer for spacing the truck mount from the frame body;

a rigid insert, the bottom of the insert being located within the composite layer to secure the insert to the composite layer and expose the top of the insert;

the framework serves as a mounting base of the bogie, the bogie mounting seat is used for mounting each part of the bogie, and the top of the insert is used for mounting the bogie mounting seat.

Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:

firstly, the rigid framework main body provides enough rigidity for the framework of the bogie to serve as an installation foundation of the bogie; and secondly, the composite material layers are fixed at the positions for fixing the bogie mounting seat in the outer surface of the framework main body, so that after the framework and the bogie mounting seat are mounted, at least one composite material layer is arranged between the bogie mounting seat and the framework main body, the composite material layers have good self vibration absorption performance and good energy absorption performance, and the vibration between the framework and the bogie in the embodiment of the application can be reduced. Meanwhile, the rigid insert is fixed with the composite material layer, so that the fixing problem of the insert is solved, and the bogie mounting seat is arranged at the top of the insert, so that the fixing problem of the bogie mounting seat is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of a truck having a frame to which a truck according to an embodiment of the present application is mounted;

FIG. 2 is another angle schematic of the truck shown in FIG. 1;

FIG. 3 is a schematic view of the frame of the truck of an embodiment of the present application;

FIG. 4 is a cross-sectional view of FIG. 3 at a frame rail;

FIG. 5 is an exploded view of FIG. 3;

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

Description of reference numerals:

100 frames, 111 frame bodies, 112 composite material layers,

121 framework longitudinal beams, 121-1 horizontal mounting plates, 121-2 relief parts,

122 frame cross-beam, 122-1 holes for traction device mounting,

130, an insert 131, a middle fixing seat 132,

141 a first step of the stepped recess, 142 a second step of the stepped recess,

152 bogie mounting base.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

The embodiment provides a framework of a bogie, and the framework is a mounting base of the bogie. The bogie can be applied to a rail vehicle, and the rail vehicle can be a diesel locomotive or an electric locomotive, a motor train unit, a subway, a light rail or a tramcar and the like.

FIG. 1 is a schematic view of a truck having a frame to which a truck according to an embodiment of the present application is mounted; FIG. 2 is another angle schematic of the truck shown in FIG. 1; FIG. 3 is a schematic view of the frame of the truck of an embodiment of the present application; FIG. 4 is a cross-sectional view of FIG. 3 at a frame rail; FIG. 5 is an exploded view of FIG. 3; fig. 6 is a cross-sectional view at one of the inserts of fig. 3.

As shown in fig. 1, 2, 3, 4, 5 and 6, a frame 100 of a bogie according to an embodiment of the present application includes:

a rigid frame body 111;

a composite layer 112 of material, the composite layer 112 being secured at least in the outer surface of the frame body in a position for securing a truck mount, the composite layer for spacing the truck mount from the frame body;

a rigid insert 130, the bottom of the insert 130 being located within the composite layer 112 to secure the insert to the composite layer and expose the top of the insert 130; namely, a bottom layer of the composite material layer is arranged between the insert and the framework main body;

According to the framework of the bogie in the embodiment of the application, firstly, the rigid framework main body is used as the installation foundation of the bogie for the framework of the bogie, and sufficient rigidity is provided; and secondly, the composite material layers are fixed at the positions for fixing the bogie mounting seat in the outer surface of the framework main body, so that after the framework and the bogie mounting seat are mounted, at least one composite material layer is arranged between the bogie mounting seat and the framework main body, the composite material layers have good self vibration absorption performance and good energy absorption performance, and the vibration between the framework and the bogie in the embodiment of the application can be reduced. Meanwhile, the rigid insert is fixed with the composite material layer, so that the fixing problem of the insert is solved, and the bogie mounting seat 152 is arranged at the top of the insert, so that the fixing problem of the bogie mounting seat is solved.

As a common approach, the truck mount 152 is secured to the top of the insert by bolts and bolt holes.

Fig. 3 shows a plurality of configurations of the truck mount 152 and a plurality of configurations of the insert 130, the configuration of the insert 130 cooperating with the configuration of the truck mount 152 to which it cooperates to enable the truck mount to be secured to the top of the insert.

As for the structure of the insert, as shown in fig. 5 and 6, the insert includes:

a central fixed seat 131;

a fixing flange 132, wherein the fixing flange 132 extends outwards from the middle fixing seat 131, and the thickness of the middle fixing seat is greater than that 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 for installing the bogie mounting seat 152.

Therefore, the fixing flange enables the fixing area of the insert and the composite material layer to be large, the insert and the composite material layer are firmly fixed, and the thickness of the middle fixing seat is larger than that of the flange, so that the middle fixing seat and the bogie mounting seat are more firmly fixed.

In cooperation with the structure of the insert, as shown in fig. 5 and 6, the frame body and the composite material layer have a stepped recess portion in cooperation with the insert;

the bottom of the stepped recess is matched with the shape of the middle fixing seat;

the first step 141 of the stepped recess is matched in shape to the fixing flange.

The presence of the stepped recess allows the height of the insert to be controlled to match the height of the truck mount.

In practice, as shown in fig. 6, the second step 142 of the stepped recess is flush with the top of the fixing flange.

In practice, as shown in fig. 5 and 6, the fixing flange 132 is disposed at the middle or bottom of the side of the middle fixing base.

In practice, as shown in fig. 6, the ratio of the thickness of the central fixing seat to the thickness of the fixing flange is at least twice. The middle fixing seat is larger in thickness and can be more stably fixed with the bogie mounting seat through bolts and bolt holes; the thickness of the fixing flange is thin, so that the weight of the insert is small.

As an alternative embodiment, the insert is an insert of a honeycomb aluminum material.

As an alternative embodiment, the insert is an insert of a low-density, high-strength metallic material, in particular, a honeycomb aluminum material.

The honeycomb aluminum material has small density and high strength, ensures that the strength of the insert is large enough, and simultaneously has small weight.

The materials of the frame are explained below.

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

The carbon fiber material serving as a new material has the advantages of small density, high strength, good energy absorption, good vibration absorption, excellent process and the like, and the composite material layer of the carbon fiber material also has the advantages. The application of the new material of carbon fiber material to the frame products is one of the development directions of the frame. In order to accommodate this development, improvements in the adaptability of the structure of the framework are required.

In practice, the composite layer is bonded to the outer surface of the carcass body. The layer of conformable material can be readily secured to the entire outer surface of the frame body by adhesive bonding.

In practice, the frame body is made of a metal material having a low density and a high strength. In this way the weight of the frame and thus the weight of the bogie is low.

As an alternative, the frame body is a frame body of a honeycomb aluminum material. The honeycomb aluminum material has small density and high strength, ensures that the strength of the framework main body is large enough, and simultaneously has smaller weight.

The shape of the frame is explained below.

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

wherein the longitudinal direction is a running direction of the bogie.

In a conventional H-shaped frame, the side beams are densely connected with the parts of the bogie, and after the bogie is placed on the track, there are densely arranged parts of the bogie near the running rails of the track. The frame longitudinal beam is positioned in the middle of the frame cross beam and is connected with a plurality of components of the bogie; after the bogie is placed on the track, the number of parts of the bogie between the two running rails is increased, and the number of parts of the bogie near the running rails is reduced, so that the utilization of the space between the two wheel pairs of the bogie is facilitated.

In practice, as shown in fig. 3, the frame rail 121 has a shape with two ends higher and a middle lower, and the two ends of the frame rail 121 are used for connecting with a primary suspension system of a bogie.

The connection of the two ends of the framework longitudinal beam and a primary suspension system of the bogie requires a larger height, and the framework longitudinal beam is in a shape with the two ends higher and the middle part lower, so that the requirement can be met.

As an alternative, as shown in fig. 3, the frame stringer 121 includes:

horizontal mounting plates 121-1 which are positioned at two ends in the longitudinal direction and are horizontally arranged, wherein the horizontal mounting plates 121-1 are higher than the framework cross beam 122;

and a yielding part 121-2 connected between the horizontal mounting plate and the frame beam.

Therefore, the structural frame longitudinal beam has the characteristics of high shapes at two ends and low shapes in the middle, is embodied into a regular shape, and is convenient for processing and manufacturing the structural frame.

In practice, as shown in fig. 3, the frame stringers 121 have a thickness that increases gradually from the ends to the middle.

The thickness of the longitudinal beam of the framework is gradually increased from the two ends to the middle part, and the longitudinal beam of the framework can adapt to the characteristic that the middle part of the longitudinal beam of the framework bears larger weight.

In practice, as shown in fig. 3, the frame stringers 121 have a width that increases gradually from the ends to the middle.

The truss longitudinal beam has the characteristic that the width of the truss longitudinal beam is gradually increased from two ends to the middle part, and can adapt to the characteristic that the middle part of the truss longitudinal beam bears larger weight.

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

The framework with the symmetrical structure is convenient to process and manufacture and is also convenient to balance stress.

In practice, as shown in FIG. 3, a towing attachment mounting hole 122-1 is formed at the center of the frame cross member, and the towing attachment mounting hole 122-1 is used for mounting a towing attachment of the bogie.

In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A frame for a bogie, comprising:

a rigid frame body;

2. The truss of claim 1 wherein the insert comprises:

a middle fixing seat positioned in the middle;

the fixing flange extends outwards from the middle fixing seat, and the thickness of the middle fixing seat is greater than that of the fixing flange;

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

the top of the middle fixing seat is used for installing the bogie mounting seat.

3. The truss of claim 2 wherein the truss body and the composite layer have a stepped recess that mates with the insert;

the first step of the stepped recess is matched with the shape of the fixing flange.

4. A framework as defined in claim 3, wherein the second step of said stepped recess is level with the top of said fixing flange.

5. A framework as defined in claim 4, wherein the fixing flanges are provided at the middle or bottom of the sides of the central fixing base.

6. A framework as defined in claim 5, wherein the ratio of the thickness of the central fixing seat to the thickness of the fixing flange is at least twice.

7. The truss of claim 6 wherein the inserts are inserts of a honeycomb aluminum material.

8. A framework as claimed in any of claims 1 to 7, wherein the composite layer wraps around the entire outer surface of the framework body.

9. The frame of claim 8, wherein the composite material layer is a unitary structure.

10. The framework of claim 8, wherein the composite material layer is a composite material layer of a carbon fiber material.

11. The frame of claim 10, wherein the composite layer is bonded to an outer surface of the frame body.

12. The frame of claim 10, wherein the frame body is a low density, high strength metal material frame body.

13. The truss of claim 10 wherein the truss body is a truss body of a honeycomb aluminum material.