CN112046523A

CN112046523A - Variable-section ultrathin vehicle body support beam structure

Info

Publication number: CN112046523A
Application number: CN202010931363.2A
Authority: CN
Inventors: 刘洪涛; 杨建龙; 姚昕; 洪海峰
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2020-12-08

Abstract

The utility model provides a variable cross section ultra-thin automobile body supporting beam structure which characterized in that: the invention belongs to a set of completely independently researched and developed new structure, and a supporting beam structure with the requirement is not designed in domestic rail vehicles. The support beam can realize the integration of various functions of an electric vehicle, a vehicle body, a bogie and the like in a discontinuous smaller space range and a thinner area, meets the high load requirement of American society of mechanical Engineers (ASMERT 2-2014) standard, finally realizes the technical breakthrough of project research and development, and solves the problem of no design scheme of a variable-section ultrathin vehicle body support beam structure in American standard subway vehicle design at present.

Description

Variable-section ultrathin vehicle body support beam structure

Technical Field

The invention belongs to the technical field of rail vehicle body manufacturing, and particularly relates to a variable-section ultrathin vehicle body support beam structure.

Background

The existing car body sleeper beam structure meets the load requirement of a railway vehicle specified in European standard EN 12663, has a continuous and large-section structure in section, occupies a large space, and only meets the design requirement of structural strength in the aspect of function integration. For research and development indexes with smaller space requirement, high load, multiple function integration and discontinuous sections, particularly for American standard metro vehicles, at present, a traditional sleeper beam cannot meet the technical requirement, and a brand new structure, namely a variable-section ultrathin vehicle body support beam, is urgently needed to be invented so as to meet the integration index requirement of the American standard metro vehicles.

Disclosure of Invention

The invention aims to develop a vehicle meeting the American Society of Mechanical Engineers (ASME) RT2-2014 standard, solve the problem of structural design scheme of a variable-section ultrathin vehicle body support beam on American standard metro vehicle design at present and develop a key part for vehicle integration.

In order to achieve the above object, the present invention provides a variable cross-section ultrathin vehicle body support beam structure, characterized in that: the supporting plate is positioned on the upper parts of the variable cross-section bearing beam and the ultrathin double-wing surface supporting element, the upper end of the supporting plate is connected with the longitudinal supporting beam, the transverse impact plate and the transverse anti-drop beam, the penetrating assembly, the air spring positioning element and the drainage baffle plate are arranged in the supporting plate, and all the parts are connected by adopting a welding structure; the penetrating assembly is arranged between the supporting plate and the variable cross-section bearing beam and forms a space supporting structure with the ultrathin double-wing-surface supporting element, so that the rigidity is improved, the impact caused by the air spring positioning element can be effectively resisted, the inner penetrating assembly is designed into a structure with a cavity, the buffering effect of the gradient change position of the cross section is realized, and meanwhile, the installation and maintenance interfaces of an electric cable and a brake pipeline are integrated; the air spring positioning element and the drainage clapboard are arranged between the supporting plate and the variable cross-section bearing beam in a welding way and are arranged in an ultrathin area, so that the installation and integration with the air spring are realized; the water draining partition plate divides the ultrathin area into a plurality of cavities, so that water is guided to the end of the ultrathin double-wing-surface supporting element to be drained after water enters the ultrathin area under special operation conditions.

Preferably, the variable cross-section support element is divided into a high-elevation surface and a low-elevation surface, and the two parts are in smooth transition.

Preferably, the "zig-zag" support plate is in the shape of a porous, non-uniform height bearing surface.

Preferably, the longitudinal support beam and the transverse anti-drop beam form a cavity structure which is connected in a welding mode, and the support plate with discontinuous cross sections is stabilized.

The variable-section ultrathin vehicle body support beam structure is developed based on various functional requirements of American subway vehicles, takes the integration of various functions into consideration, belongs to a set of completely and independently developed new structures, and is not designed in domestic railway vehicles. The support beam can realize the integration of various functions of an electric vehicle, a vehicle body, a bogie and the like in a discontinuous smaller space range and a thinner area, meets the high load requirement of American Society of Mechanical Engineers (ASME) RT2-2014 standard, finally realizes the technical breakthrough of project research and development, and solves the problem of no design scheme of a variable-section ultrathin vehicle body support beam structure in American standard subway vehicle design at present.

Drawings

FIG. 1 is a schematic illustration of a rail vehicle body structure;

FIG. 2 is a schematic view of a variable cross-section ultra-thin vehicle body support beam structure according to the present invention;

FIG. 3 is an exploded view of a variable cross-section ultra-thin vehicle body support beam structure according to the present invention.

Detailed Description

The invention will be described in detail with reference to the schematic diagram, wherein the longitudinal direction is the length direction of the vehicle body, namely the short side direction of the variable-section ultrathin vehicle body support beam structure; the transverse direction is the width direction of the vehicle body, namely the long side direction of the variable-section ultrathin vehicle body support beam structure.

Referring to fig. 1, the embodiment of the present invention includes a front end 1, a roof 2, a sidewall 3, a rear end 4, and a bottom frame 5. The five-part structure is used to bear various passenger and vehicle equipment loads, and forms a complete structural requirement interface. The driver and passenger area includes cab partitions 6, cab 7 or passenger compartment 8, which form a complete passenger interface.

The American subway rail vehicle requires larger wheel diameter to obtain better dynamic performance at a personnel driving interface; meanwhile, a lower floor height is required to realize smaller platform construction cost and lower vehicle gravity center, and finally higher operation safety and comfort of a personnel driving interface are realized. Therefore, the research and development of structural requirement interface systematization are needed, and a variable-section ultrathin vehicle body supporting beam structure is needed to be developed to integrate space and functions so as to meet the requirement of a driving interface of personnel.

Referring to fig. 2, the variable-section ultrathin vehicle body support beam structure is provided in the underframe 5, and is constituted of a support plate 51 shaped like a Chinese character 'ji', a variable-section carrier beam 52, an ultrathin double-wing surface support member 53, a longitudinal support beam 54, a transverse impact plate 55, a transverse anti-drop beam 56, a penetration assembly 57, an air spring positioning member 58, and a drainage baffle plate 59.

The inverted V-shaped support plate 51 is positioned on the upper parts of the variable cross-section bearing beam 52 and the ultrathin double-wing-surface support element 53, and the upper ends of the inverted V-shaped support plate are connected with a longitudinal support beam 54, a transverse impact plate 55 and a transverse anti-dropping beam 56. The inner part comprises a through assembly 57, an air spring positioning element 58 and a drainage baffle 59, and all parts and parts are connected by adopting a welding structure.

Referring to fig. 3, the ultra-thin regions at two ends of the variable cross-section load beam 52 are connected with the ultra-thin double-wing support elements 53, the support elements 53 are connected with the periphery of the support plate at the upper part of the support elements, and when a vertical load is applied, the support elements 53 arranged in two ends have a special profile design, so that the vertical load is applied. The ultra-thin area occupies less space in height, namely two vertical surface heights are designed in the variable cross-section supporting element 53 and are divided into a high vertical surface part and a low vertical surface part, a smooth profile design is adopted between the two parts, force transmission is facilitated, the low vertical surface part enables the whole vehicle body supporting beam to achieve ultra-thin design, so that a larger whole vehicle integration space is obtained, the vehicle dynamic performance is improved, and meanwhile, the maintenance requirement of the air spring in the full circumference range is met.

The longitudinal supporting beam 54 and the transverse anti-drop beam 56 form a cavity structure which is connected in a welding mode, the inverted V-shaped supporting plate 51 with discontinuous sections is stabilized, the formed surrounding structure can bear the requirements of vehicle body impact load and vehicle turning load, the supporting function of the vehicle body is achieved, the occurrence of serious derailment accidents is prevented, and the function of connecting the vehicle body and the bogie is ensured.

The transverse impact plate 55 is connected with the longitudinal support beam 54, the surface of the transverse impact plate has an impact resistance function, the transverse motion load in the vehicle running process can be borne, the transverse displacement of the vehicle is limited, and the comfort performance of the vehicle motion is improved.

The internal penetrating assembly 57 is arranged between the inverted-V-shaped support plate 51 and the variable cross-section bearing beam 52, and forms a space support structure with the ultrathin double-wing-surface support element 53, so that the rigidity is improved, and the impact brought by the air spring positioning element 58 can be effectively resisted; the internal penetration assembly 57 achieves a cushioning effect at the gradient change position of the cross section by the arrangement of each cavity, and simultaneously integrates the installation and maintenance interfaces 60 of the electric cables and the brake pipelines.

The air spring positioning element 58 and the drainage clapboard 59 are arranged between the inverted-V-shaped support plate 51 and the variable-section bearing beam 52 in a welding way and are set in an ultrathin area, so that the air spring positioning element and the air spring are installed and integrated; the water drain partition 59 divides the ultra-thin region into a plurality of chambers, and enables the interior to be drained by directing water to the end of the ultra-thin double-airfoil support element 53 if water enters due to special operating conditions.

The shape of each part of the support plate 51 in the shape of a Chinese character 'ji', the variable cross-section bearing beam 52, the ultrathin double-wing-surface support element 53, the longitudinal support beam 54, the transverse impact plate 55, the transverse anti-drop beam 56, the penetrating assembly 57, the air spring positioning element 58 and the drainage partition plate 59 integrates the transmission of mechanical load, the integration of vehicle functions and interfaces, and the core characteristic of the whole support structure is realized. Wherein the inverted V-shaped support plate 51 has the shape characteristic of bearing on the innovative porous unequal height surface; the variable cross-section load beam 52 has the shape characteristics of a variable cross-section facade and space integration; the ultra-thin double-wing supporting element 53 has a variable section design characteristic, realizes the improvement of rigidity, and can bear the impact load brought by the air spring positioning element 58.

The variable-section ultrathin vehicle body support beam structure is developed based on various functional requirements of American subway vehicles, takes the integration of various functions into consideration, belongs to a set of completely and independently developed new structures, and is not designed in domestic railway vehicles.

The support beam can realize the integration of various functions of an electric vehicle, a vehicle body, a bogie and the like in a discontinuous smaller space range and a thinner area, meets the high load requirement of American Society of Mechanical Engineers (ASME) RT2-2014 standard, finally realizes the technical breakthrough of project research and development, and solves the problem of no design scheme of a variable-section ultrathin vehicle body support beam structure in the American standard subway vehicle design at present.

The invention structure is verified through the whole process of structure research and development, theoretical calculation simulation, sample piece production and loading test, and is applied in production, and finally the first vehicle meeting the American ASME RT2-2014 standard in China is developed.

Claims

1. The utility model provides a variable cross section ultra-thin automobile body supporting beam structure which characterized in that: the bearing plate (51) is positioned on the upper parts of the variable cross-section bearing beam (52) and the ultrathin double-wing-surface supporting element (53), the upper end of the bearing plate is connected with the longitudinal supporting beam (54), the transverse impact plate (55) and the transverse anti-falling beam (56), the inner part of the bearing plate comprises the through component (57), the air spring positioning element (58) and the drainage clapboard (59), and all the parts are connected by adopting a welding structure; the penetrating assembly (57) is arranged between the support plate (51) and the variable cross-section bearing beam (52) and forms a space support structure with the ultrathin double-wing-surface support element (53), so that the rigidity is improved, and the impact brought by the air spring positioning element (58) can be effectively resisted; the inner penetrating component (57) is designed into a structure with a cavity, so that the buffering effect of the gradient change position of the section is realized, and meanwhile, the installation and maintenance interfaces (60) of an electric cable and a brake pipeline are integrated; the air spring positioning element (58) and the drainage clapboard (59) are arranged between the support plate (51) and the variable cross-section bearing beam (52) in a welding way and are set in an ultrathin area, so that the installation and integration with the air spring are realized; the water draining partition board (59) divides the ultrathin area into a plurality of cavities for draining water guided to the end of the ultrathin double-wing surface supporting element (53) after water enters from the interior due to special operation working conditions.

2. A variable-section ultra-thin vehicle body support beam structure according to claim 1, characterized in that: the variable cross-section supporting element is divided into a high vertical surface and a low vertical surface, and the two parts are in smooth transition.

3. A variable-section ultra-thin vehicle body support beam structure according to claim 1, characterized in that: the support plate in the shape of a Chinese character 'ji' is of a porous structure, and the bearing surface is not high.

4. A variable-section ultra-thin vehicle body support beam structure according to claim 1, characterized in that: the longitudinal support beam (54) and the transverse anti-drop beam (56) form a cavity structure and are connected in a welding mode, and the support plate with discontinuous cross sections is stabilized.