CN112644543B

CN112644543B - Steering frame

Info

Publication number: CN112644543B
Application number: CN201910957550.5A
Authority: CN
Inventors: 孙秀宇; 李辰生; 于云海; 张�杰; 张晓红; 王波
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2022-07-22
Anticipated expiration: 2039-10-10
Also published as: WO2021068541A1; CN112644543A

Abstract

The embodiment of the application provides a bogie, which comprises a framework and a secondary suspension device, wherein the secondary suspension device is arranged on the framework; the frame 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; the frame is used 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 secondary suspension device is used for being connected with a vehicle body. The technical problem that vibration between a framework in the bogie and a part of the bogie is large is solved.

Description

Steering frame

Technical Field

The application relates to the technical field of railway vehicles, in particular to 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 frame is the main framework of the bogie, and many parts of the bogie are fixed with the frame through a metal bogie mounting seat. The conventional 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 results in less comfort of the rail train.

Therefore, the large vibration between the frame in the bogie and the components of the bogie is a technical problem that needs to be solved urgently by those skilled in the art.

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 that vibration between the framework in the bogie and a part of the bogie is large.

The embodiment of the application provides a bogie, which comprises a framework and a secondary suspension device, wherein the secondary suspension device is arranged on the framework; the frame 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;

the frame serves as a mounting base of the bogie, the bogie mounting seat is used for mounting all parts of the bogie, and the top of the secondary suspension device is used for being connected with a vehicle body.

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

firstly, a secondary suspension device is arranged on the framework, and the vertical acting force of the vehicle body passes through the secondary suspension device and is transmitted to the framework; secondly, the rigid framework main body provides enough rigidity for the framework of the bogie to serve as an installation foundation of the bogie; secondly, the composite material layer is fixed at the position for fixing the bogie mounting seat in the outer surface of the frame main body, and then after the frame and the bogie mounting seat are installed, at least one composite material layer is arranged between the bogie mounting seat and the frame main body, so that the composite material layer has good self vibration absorption performance and good energy absorption performance, and the vibration between the frame and the bogie in the bogie of the embodiment of the application can be reduced.

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 according to an embodiment of the present application;

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

FIG. 3 is a schematic view of a frame of a truck according to 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 of 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 yielding parts,

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

130, an insert, 131, a middle fixed seat, 132, a fixed flange,

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

152 a bogie mount;

200 secondary suspension device.

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 bogie, which can be applied to a railway vehicle, wherein the railway vehicle can be a diesel locomotive or an electric locomotive, and can be a motor train unit, a subway, a light rail or a tramcar.

FIG. 1 is a schematic illustration of a truck according to an embodiment of the present application; 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 cross member.

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

a rigid frame body 111;

a composite layer 112 of material secured at least in the outer surface of the frame body in a position for securing a truck mount 152, the composite layer of material separating the truck mount and the frame body;

the frame is used 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 secondary suspension device is used for being connected with a vehicle body.

According to the bogie of the embodiment of the application, firstly, the secondary suspension device is installed on the framework, and the vertical acting force of the vehicle body passes through the secondary suspension device and is transmitted to the framework; secondly, the rigid framework main body provides enough rigidity for the framework of the bogie to serve as an installation foundation of the bogie; secondly, the composite material layer is fixed at the position for fixing the bogie mounting seat in the outer surface of the frame main body, and then after the frame and the bogie mounting seat are installed, at least one composite material layer is arranged between the bogie mounting seat and the frame main body, so that the composite material layer has good self vibration absorption performance and good energy absorption performance, and the vibration between the frame and the bogie in the bogie of the embodiment of the application can be reduced.

As for the secondary suspension device, as shown in fig. 1 and 2, the secondary suspension device is an air spring.

With respect to the construction of the frame, in practice, as shown in FIG. 4, the composite layer 112 wraps around the entire outer surface of the frame body.

Thus, the integral framework is a framework main body with rigid inside, and the outer layer is wrapped on the whole outer surface of the framework main body and is a framework with a sandwich structure. Thus, when a certain bogie mounting seat exerts pulling or extruding force on the composite material layer, the force is transmitted to the whole composite material layer, the force is dispersed, and the framework is firmer.

In an implementation, the composite layer is a unitary structure. The composite material layer of integral structure for the framework is as a whole, and is more firm, simultaneously, also makes the effect of power furthest's dispersion.

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;

the two air springs are symmetrically arranged on the framework cross beam 122;

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

In a conventional H-shaped frame, the side rails are densely connected with the multiple parts of the bogie, and after the bogie is placed on the track, there are dense multiple parts of the bogie near the running rails of the track. The bogie comprises a cross-shaped framework, a framework longitudinal beam and a bogie, wherein the framework longitudinal beam is positioned in the middle of a framework 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 space between the two wheel pairs of the bogie is favorably utilized.

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

The two ends of the framework longitudinal beam are connected with a primary suspension system of the bogie, so that the height is large, and the framework longitudinal beam is in a shape with two high ends and a low middle part, so that the requirement can be met.

As an alternative, as shown in fig. 3, the truss longitudinal beam 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 framework cross beam.

Therefore, the structural frame longitudinal beam has the shape characteristics of high ends and low middle parts, 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 both ends to the middle.

The thickness of the longitudinal beam of the framework is gradually increased from two ends to the middle part, so that 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 gradually increases from both 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.

The following describes how the truck mount is secured to the frame. FIG. 5 is an exploded view of FIG. 3; fig. 6 is a cross-sectional view at one of the inserts of fig. 3.

In practice, as shown in fig. 5 and 6, the frame further comprises:

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;

wherein the top of the insert is used to mount the truck mount 152.

In this way, the rigid insert is secured to the composite layer to solve the insert securement problem, and the truck mount 152 is mounted on top of the insert to solve the truck mount securement problem. 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 base 131;

wherein, the top of the middle fixing seat is used for installing the bogie mounting seat 152.

Therefore, the fixing flange enables the insert to be large in fixing area with the composite material layer, the insert is firmly fixed with the composite material layer, 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 fixed seat;

the first step 141 of the stepped recess is matched to the shape of 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 thickness of the middle fixing seat is larger, and the middle fixing seat and the bogie mounting seat can be more stably fixed through bolts and bolt holes; the thickness of the fixing flange is thin, so that the weight of the insert is low.

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 the weight of the insert is smaller.

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 the present application and its embodiments, unless specifically 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 with; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

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. The first feature being "under," "beneath," and "under" the 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. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements 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 bogie comprising a frame and a secondary suspension device mounted on the frame; the frame 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; after the framework and the bogie mounting seat are mounted, at least one layer of composite material layer is arranged between the bogie mounting seat and the framework main body;

the frame 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 secondary suspension device is used for being connected with a vehicle body;

the composite material layer wraps the whole outer surface of the framework main body, and the framework is a sandwich-structured framework;

the composite material layer is a composite material layer made of carbon fiber material;

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;

wherein the top of the insert is used for mounting the bogie mounting seat;

the insert includes:

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 is exposed out of the top of the middle fixing seat;

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

2. The truck of claim 1 wherein the secondary suspension device is an air spring.

3. The truck of claim 2 wherein the composite layer is a unitary structure.

4. The truck of claim 3, wherein the composite layer is bonded to an outer surface of the frame body.

5. The bogie according to claim 3, wherein the frame body is a frame body of a low density, high strength metallic material.

6. The bogie as recited in claim 3, wherein the truss body is a honeycomb aluminum material truss body.

7. The bogie according to any one of claims 2 to 6, wherein the frame is a cross-shaped frame comprising frame longitudinal beams in a longitudinal direction and frame cross beams intersecting the frame longitudinal beams;

the two air springs are symmetrically arranged on the framework cross beam;

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

8. The truck of claim 7 wherein the frame rails are high at both ends and low at the middle;

wherein both ends of the frame longitudinal beam are used for being connected with a primary suspension system of the bogie.

9. The truck of claim 8 wherein the frame rail comprises:

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

a abdication part connected between the horizontal mounting plate and the framework cross beam.

10. The bogie of claim 9, wherein the frame rails increase in thickness from the ends to the middle in a stepwise manner.

11. The bogie of claim 10, wherein the frame rails increase in width progressively from the ends to the middle.

12. The bogie of claim 11, wherein the frame is a symmetrical structure.

13. The truck of claim 12 wherein a central location of the frame beam is provided with a draft gear mounting hole for mounting a draft gear of the truck.

14. The truck of claim 13 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.

15. The truck of claim 14 wherein the second step of the stepped recess is level with the top of the fixed flange.

16. The truck of claim 15 wherein the attachment flange is disposed at the middle or bottom of the side of the mid mount.

17. The bogie of claim 16, wherein the ratio of the thickness of the central anchor to the thickness of the anchor flange is at least two times.

18. The truck of claim 17 wherein the insert is an insert of a honeycomb aluminum material.