CN103625492A - Hanging beam for aluminum alloy body of railway vehicle - Google Patents
Hanging beam for aluminum alloy body of railway vehicle Download PDFInfo
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- CN103625492A CN103625492A CN201210310620.6A CN201210310620A CN103625492A CN 103625492 A CN103625492 A CN 103625492A CN 201210310620 A CN201210310620 A CN 201210310620A CN 103625492 A CN103625492 A CN 103625492A
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- hanging beam
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Abstract
The invention relates to a hanging beam for an aluminum alloy body of a railway vehicle. A frame structure is formed by connecting at least two parallel transverse beams and at least two parallel longitudinal beams in a welded mode, wherein the two ends of each longitudinal beam are connected to the inner sides of the transverse beams at the two ends in a welded mode, and the outer side faces of the longitudinal beams and the end faces of the transverse beams are located in the same plane. Due to the adoption of the frame structure which is formed in a welded connection mode, the overall rigidity and the overall mechanical strength of the hanging beam are high; because the two end faces of each transverse beam and the outer side faces of the longitudinal faces are all connected with under frame boundary beams in a welded mode to form an integrated connection structure, the weld joint area is greatly enlarged, namely, the bearing area is enlarged, weld stress of the weld joint area can be obviously reduced and can be reduced by about 45 MPa compared with the prior art, and accordingly the fatigue life of the hanging beam can be greatly prolonged.
Description
Technical field
The present invention relates to a kind of in high speed railway car for hanging the hanging beam structure of traction transformer, especially, for the hanging beam structure of aluminum alloy bodywork, belong to mechanical manufacturing field.
Background technology
The guideway vehicle speed per hour of current domestic place in operation has reached more than 300 kilometers, when vehicle is when more than 300 kilometers speed per hour scopes is moved, the stressing conditions of traction transformer hanging beam is comparatively complicated, also more and more higher for the performance figure requirements such as structural strength of traction transformer hanging beam.
The hanging beam intensity of existing high speed railway car, requirement must meet European standard-EN12663:2010, also should have enough safety allowances simultaneously.Traction transformer hanging beam is as a main load bearing component of body construction, and its intensity, rigidity and strength at repeated alternation index seem and be even more important.
For emphasizing to occur under improper load working condition, can not there is fracture accident in hanging beam, requires traction transformer hanging beam can bear the damage acceleration/accel load of EN12663-2010 standard code and the fatigue load of nominal situation.
Guideway vehicle is run at high speed in process, pass through, so vehicle need brake and accelerate continually because the variation of circuit needs different speed class, and the acceleration/accel load ratio that causes hanging beam to bear is more frequent, and its dynamic stress is more complicated also.
When traction transformer weight is larger, the force of inertia producing due to acceleration/accel is very large, and hanging beam can produce very large dynamic stress and moving displacement.The weight of existing traction transformer has reached 6 tons, is subject to the limitation of metal material girder construction simultaneously, how to reach and to meet European standard-EN12663:2010, is the main difficult technical that existing hot-short car body design faces.
For addressing the above problem and deficiency, the patent No. is " hanging beam of traction transformer of rail vehicle " patent of 201010582356.2, adopt the hanging beam structure of frame-type, by 3 crossbeams and 4 longitudinal beam weldings, formed, between crossbeam and longeron, be connected with stiffening plate.Although this structure has improved bulk strength and the rigidity of hanging beam to a certain extent, also exist between crossbeam, longeron and edge beam of underframe weld seam area less than normal, the deficiency that weld stress is large, the application is the improvement of carrying out for existing hanging beam structure.
Summary of the invention
Main purpose of the present invention is to address the above problem and is not enough, and providing a kind of can effectively reduce weld stress, increases substantially the aluminum alloy bodywork of rail vehicle hanging beam of fatigue life.
For achieving the above object, technical scheme of the present invention is:
A kind of aluminum alloy bodywork of rail vehicle hanging beam, by at least two crossbeams that are parallel to each other and at least two longitudinal beam weldings that are parallel to each other, be connected to form framed structure, the two ends of described longeron are welded to connect in the inner side of two end floor beams, and the lateral surface of described longeron and the end face of described crossbeam are in same plane.
Further, described framework is formed by 3 described crossbeams and 2 described longitudinal beam weldings, and the two ends of middle 1 crossbeam are welded to connect on the medial surface of 2 described longerons, and traction transformer is hung on described longeron.
Further, between described two adjacent described crossbeams, be provided with at least one needle beam, described needle beam and described crossbeam be arranged in parallel, and the two ends of described needle beam are weldingly fixed on described longeron.
Further, the section of described needle beam is H type.
Further, described crossbeam is the hollow beam that section is duplexing font.
Further, described crossbeam is the hollow beam that section is duplexing word and chute compound type.
Further, described longeron is the hollow beam that section is twoport type.
Further: described longeron is that section is twoport type and the compound hollow beam of chute, and described chute is positioned at the edge of described longeron.
Further, described longeron is that section is twoport type and the compound hollow beam of chute, and described chute is positioned at the base middle position of the shape of the mouth as one speaks described in one of them.
Further, the width of described longeron is 380-440mm.
Content to sum up, a kind of aluminum alloy bodywork of rail vehicle hanging beam of the present invention, compared with prior art, tool has the following advantages:
(1) hanging beam adopts the tower structure being welded to connect, whole rigidity and mechanical strength are higher, can reach the operating needs that bears damage load that European standard requires, simultaneously, load can balancedly be distributed on crossbeam, longeron, thereby reduced the stress level of crossbeam, the independent structure of longeron, the fatigue life that can improve hanging beam.
(2) both ends of the surface of crossbeam and the lateral surface of longeron are all welded to connect with edge beam of underframe, form integrated connection structure, significantly increased weld seam area, be that loaded area increases, can significantly reduce this place's weld stress, weld stress compared with prior art can reduce about 45MPa, increases substantially its fatigue life.
(3) compared with prior art, strengthened the cross-sectional area of longeron, and then the weld seam area between longeron and crossbeam is increased a lot, the weld stress at this place compared with prior art can reduce about 26MPa, further improves its fatigue life.
(4) in framed structure, be aided with needle beam and strengthen, the intensity of hanging beam integral body is improved, reach the acceleration/accel load of bearing EN12663 standard code, in addition, by the setting of a plurality of needle beams, can also strengthen the rigidity on floor, reduce the vibrating noise at this place.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention one structural representation;
Fig. 2 is the structural representation after the embodiment of the present invention one is welded with edge beam of underframe;
Fig. 3 is the embodiment of the present invention one crossbeam section structure schematic diagram;
Fig. 4 is the embodiment of the present invention one longeron section structure schematic diagram;
Fig. 5 is the embodiment of the present invention one needle beam section structure schematic diagram;
Fig. 6 is the embodiment of the present invention two longeron section structure schematic diagrams;
Fig. 7 is the embodiment of the present invention three longeron section structure schematic diagrams;
Fig. 8 is the embodiment of the present invention four crossbeam section structure schematic diagrams;
Fig. 9 is the embodiment of the present invention five hanging beam structural representations.
As shown in Figures 1 to 9, crossbeam 1, longeron 2, needle beam 3, hangs hole 4, chute 5, edge beam of underframe 6.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail:
Embodiment mono-:
As depicted in figs. 1 and 2, a kind of aluminum alloy bodywork of rail vehicle hanging beam, for hanging the traction transformer being positioned under car, the edge beam of underframe 6 of hanging beam and car body is welded to connect.
Hanging beam is framed structure, by least two crossbeams that are parallel to each other 1 and at least two longerons that are parallel to each other 2, is welded to connect and is formed, and framed structure integral body is rectangle.The definition of above-mentioned longeron 2 and crossbeam 1 is when installing and car body is vertical or horizontal direction and divides.In order to reduce the weight of whole hanging beam, meet the requirement of high speed railway car weight-saving, can meet again the integrated carrying ability of hanging beam simultaneously, crossbeam 1 and longeron 2 all adopt aluminium alloy hollow profile structure.
As depicted in figs. 1 and 2, in the present embodiment, preferably, the framed structure of hanging beam is to be made of welded connection by 3 crossbeams that are parallel to each other 1 and 2 longerons that are parallel to each other 2,2 elongated settings of longeron 2, the two ends of 2 longerons 2 are welded to connect on the medial surface of both sides crossbeam 1, and the two ends of middle 1 crossbeam 1 are welded to connect on the medial surface of 2 longerons 2.
For guaranteeing under larger load-up condition, crossbeam 1 and longeron 2 have good counter-bending, anti-torsion performance, as shown in Figure 3, in the present embodiment, preferably, crossbeam 1 adopts the hollow beam that section is duplexing word, and crossbeam 1 preferably adopts the higher A7N01S-T5 section bar of intensity.As shown in Figure 4, it is the hollow beam of twoport type that longeron 2 preferably adopts section, and longeron 2 preferably adopts the higher A6N01S-T5 section bar of toughness, fully to guarantee its strength and stiffness.
Two end faces and the edge beam of underframe 6 of 2 crossbeams 1 of both sides are welded to connect, and the section form of duplexing word can increase bonding area, and then can effectively reduce the weld stress of edge beam of underframe 6, improve strength at repeated alternation.It is the hollow beam of duplexing word that crossbeam 1 in the middle of being positioned at also adopts section, can increase the bonding area with longeron 1 inner side, and then reduces the weld stress of longeron 2 and crossbeam 1.
The medial surface of the both ends of the surface of longeron 2 and the crossbeam of both sides 1 is welded to connect, adopt twoport type hollow beam can make the welding between longeron 2 and crossbeam 1 simple, and weld seam transitions smooth, stress is concentrated lower, and strengthened the cross-sectional area of longeron 2, and then the weld seam area between longeron 2 and crossbeam 1 is increased a lot, the weld stress at this place compared with prior art can reduce about 26MPa, further improves its fatigue life.
Through lot of experiments checking, the width of longeron 2 is preferably 380-440mm, the width of longeron 2 is 400-420mm more preferably, in this width range, can guarantee under longeron 2 and the lower prerequisite of the weld stress of crossbeam 1, make the weight of longeron 2 minimum, and then meet the lightweight requirements of high speed railway car.
As shown in Figure 1, the lateral surface of 2 longerons 2 face of weld of edge beam of underframe 6 (with) with the end face of crossbeam 1 in same plane.Like this, when with edge beam of underframe 6 welding, the both ends of the surface of crossbeam 1 with and the lateral surface of longeron 2 be all welded to connect with edge beam of underframe, crossbeam 1 and longeron 2 form integrated connection structure, significantly increased the weld seam area between hanging beam and edge beam of underframe 6, increased the loaded area of weld seam, through lot of experiments checking, this kind of welding connecting mode, can significantly reduce weld stress, weld stress compared with prior art can reduce about 45MPa, and then realization increases substantially its fatigue life.In addition, when with edge beam of underframe 6 welding, can adopt boxing technique to weld, technique is simple, good manufacturability, and the whole Automation of Welding level that improves, welding efficiency is high.
Traction transformer is hung on longeron 2, on longeron 2, be provided with and hang hole 4 for what hang voltage transformer, traction transformer by a plurality of bolts with hang hole 4 and be fixedly connected with.In the present embodiment, it is the hollow beam of twoport type that longeron 2 adopts section, hangs hole 4 and is opened on the base of one of them shape of the mouth as one speaks.Hanging hole 4 can be slotted hole, hangs on hole 4 for one and for a plurality of bolts, is fixedly connected with simultaneously.
Because the spacing between 3 crossbeams 1 is larger, cause the ground panel stiffness of its connection lower, as depicted in figs. 1 and 2, between two adjacent crossbeams 1, be provided with at least one needle beam 3, needle beam 3 be arranged in parallel with crossbeam 1, the two ends of needle beam 3 are welded to connect on the medial surface of longeron 2, and after needle beam 3 welding, the upper surface of its upper surface and crossbeam 1, longeron 2 is in same plane.As shown in Figure 5, the section of needle beam 3 is H type, and this section can guarantee, under the prerequisite that needle beam 3 weight are less, to guarantee the rigidity of needle beam 3.In the present embodiment, in separated two frame spaces by intermediate transverse girder 1, be respectively arranged with 3 needle beams 3 and 2 needle beams 3, a plurality of needle beams 3 are uniformly distributed, and the spacing between needle beam 3 is approximately 600mm left and right.
The setting of needle beam 3, can further strengthen the strength and stiffness of whole hanging beam, hanging beam is reached bear the acceleration/accel load of EN12663 standard code, simultaneously, also can increase the rigidity on the floor that is welded on hanging beam top, avoid floor vibration, reduce floor vibration noise.
Hanging beam adopts this kind of framed structure, whole rigidity and mechanical strength are higher, can reach the operating needs that bears damage load that European standard requires, simultaneously, load can balancedly be distributed on a plurality of crossbeams 1, longeron 2 and needle beam 3, thereby reduced the stress level of crossbeam 1, longeron 2 independent structures, the fatigue life that can improve hanging beam.
Embodiment bis-:
As shown in Figure 6, it is the compound hollow beam of twoport type and chute that longeron 2 adopts section, and chute 5 is positioned at the edge bottom of longeron 2 one sides.On this longeron 2, no longer need to offer in addition and hang hole 4, chute 5 is itself hangs hole, and a plurality of bolts are in the interior slip of chute 5, in position fastening, and then fixed traction voltage transformer.It is simple that this longeron 2 is hung form, is conducive to the assembling of voltage transformer.
Embodiment tri-:
As shown in Figure 7, it is the compound hollow beam of twoport type and chute that longeron 2 adopts section, and chute 5 is positioned at the base middle position of one of them shape of the mouth as one speaks.On this longeron 2, no longer need to offer in addition and hang hole 4, chute 5 is itself hangs hole, and a plurality of bolts are in the interior slip of chute 5, in position fastening, and then fixed traction voltage transformer.Identical with embodiment bis-, it is simple that this longeron 2 is hung form, is conducive to the assembling of voltage transformer.
Embodiment tetra-:
As shown in Figure 8, it is the hollow beam of duplexing word and chute compound type that crossbeam 1 adopts section, except the feature described in possessing embodiment mono-, also helps below crossbeam 1 and hangs equipment.
Embodiment five:
As shown in Figure 9, the framed structure of hanging beam is made of welded connection by 2 crossbeams 1 that are parallel to each other and 2 longerons 2 that are parallel to each other, the two ends of 2 longerons 2 are welded to connect the inner side at two end floor beams 1, the lateral surface of 2 longerons 2 face of weld of edge beam of underframe 6 (with) with the end face of crossbeam 1 in same plane, 3 needle beams 3 are set between two crossbeams 1, spacing between needle beam 3 is approximately 600mm, for hanging the hole 4 of hanging of traction transformer, is arranged on longeron 2.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings.In every case be the content that does not depart from technical solution of the present invention, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. an aluminum alloy bodywork of rail vehicle hanging beam, by at least two crossbeams that are parallel to each other and at least two longitudinal beam weldings that are parallel to each other, be connected to form framed structure, it is characterized in that: the two ends of described longeron are welded to connect in the inner side of two end floor beams, the lateral surface of described longeron and the end face of described crossbeam are in same plane.
2. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, it is characterized in that: described framework is formed by 3 described crossbeams and 2 described longitudinal beam weldings, the two ends of middle 1 crossbeam are welded to connect on the medial surface of 2 described longerons, and traction transformer is hung on described longeron.
3. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, it is characterized in that: between described two adjacent described crossbeams, be provided with at least one needle beam, described needle beam and described crossbeam be arranged in parallel, and the two ends of described needle beam are weldingly fixed on described longeron.
4. aluminum alloy bodywork of rail vehicle hanging beam according to claim 3, is characterized in that: the section of described needle beam is H type.
5. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, is characterized in that: described crossbeam is the hollow beam that section is duplexing font.
6. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, is characterized in that: described crossbeam is the hollow beam that section is duplexing word and chute compound type.
7. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, is characterized in that: described longeron is the hollow beam that section is twoport type.
8. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, is characterized in that: described longeron is that section is twoport type and the compound hollow beam of chute, and described chute is positioned at the edge of described longeron.
9. aluminum alloy bodywork of rail vehicle hanging beam according to claim 1, is characterized in that: described longeron is that section is twoport type and the compound hollow beam of chute, and described chute is positioned at the base middle position of the shape of the mouth as one speaks described in one of them.
10. according to the aluminum alloy bodywork of rail vehicle hanging beam described in claim 7-9 any one, it is characterized in that: the width of described longeron is 380-440mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210310620.6A CN103625492B (en) | 2012-08-29 | 2012-08-29 | Aluminum alloy bodywork of rail vehicle hanging beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210310620.6A CN103625492B (en) | 2012-08-29 | 2012-08-29 | Aluminum alloy bodywork of rail vehicle hanging beam |
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| CN103625492A true CN103625492A (en) | 2014-03-12 |
| CN103625492B CN103625492B (en) | 2016-09-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035112A (en) * | 2015-07-08 | 2015-11-11 | 南车南京浦镇车辆有限公司 | Suspended structure for heavy equipment |
| CN106080623A (en) * | 2016-06-08 | 2016-11-09 | 中车唐山机车车辆有限公司 | Apparatus installation system and rail vehicle under car |
| CN112026815A (en) * | 2020-08-05 | 2020-12-04 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle equipment hanging frame, rail vehicle body underframe and rail vehicle |
| CN112605494A (en) * | 2020-12-29 | 2021-04-06 | 青岛联诚宏达轨道交通设备有限公司 | Assembly welding process for intercity vehicle main hanging beam and intercity vehicle main hanging beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106080623A (en) * | 2016-06-08 | 2016-11-09 | 中车唐山机车车辆有限公司 | Apparatus installation system and rail vehicle under car |
| CN112026815A (en) * | 2020-08-05 | 2020-12-04 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle equipment hanging frame, rail vehicle body underframe and rail vehicle |
| CN112026815B (en) * | 2020-08-05 | 2022-02-15 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle equipment hanging frame, rail vehicle body underframe and rail vehicle |
| CN112605494A (en) * | 2020-12-29 | 2021-04-06 | 青岛联诚宏达轨道交通设备有限公司 | Assembly welding process for intercity vehicle main hanging beam and intercity vehicle main hanging beam |
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|---|---|
| CN103625492B (en) | 2016-09-07 |
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