CN102039906B - Welding method of skirtboard structure of underframe equipment cabin - Google Patents
Welding method of skirtboard structure of underframe equipment cabin Download PDFInfo
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- CN102039906B CN102039906B CN2009103082765A CN200910308276A CN102039906B CN 102039906 B CN102039906 B CN 102039906B CN 2009103082765 A CN2009103082765 A CN 2009103082765A CN 200910308276 A CN200910308276 A CN 200910308276A CN 102039906 B CN102039906 B CN 102039906B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The invention discloses a skirtboard structure of an underframe equipment cabin and a welding method thereof. A trapezoidal truss structure consisting of three layers of aluminum plates is adopted, wherein the three layers of aluminum plates are sequentially welded according to the overlapping sequence, so that the requirement of limited space of a skirtboard is met on the premise of the due strength and rigidity of the skirtboard and the lightweight design of the equipment cabin is realized. The skirtboard structure of the underframe equipment cabin comprises three layers of aluminum plates, wherein two side ends of the two layers of aluminum plates on the upper part are respectively welded with a U-shaped aluminum section; the three layers of aluminum plates are sequentially welded according to the overlapping sequence; and the widths of the three layers of aluminum plates are different, but the longitudinal lengths of the two layers of aluminum plates are the same. Because the skirtboard adopts the trapezoidal welding structure formed by overlapping the three layers of aluminum plates, materials are saved and the space occupied by the whole machined skirtboard is also saved. On the basis of the traditional welding technology and machining equipment, in the welding way between every two aluminum plates, the deformation is guaranteed to be relatively small and the design requirements on the strength and the rigidity can be also met. The two layers of aluminum plates overlapped on the upper part are riveted through perforation of a riveted stud bolt.
Description
Technical field
The present invention is a kind of apron board structure of chassis equipment compartment and welding processing thereof that is applied to guideway vehicle, adopts specifically the aluminium sheet of 3 layers of same thickness to form trapezoidal welded structure, belongs to mechanical manufacturing field.
Background technology
The present high speed railway car of domestic design and use, such as urban light rail, subway, motor train unit and passenger train etc., equipment all holds and is installed in the undercarriage equipment compartment under its car.
The skirtboard that consists of undercarriage equipment compartment selects stainless steel to carry out spot welding processing usually, and the integral rigidity of corrosion-resistant steel skirtboard is larger, is easy to deform in the spot welding course of processing, just is difficult to repair and adjust in case deform.
And the weight of corrosion-resistant steel skirtboard is larger, is unfavorable for reducing car body self and the dynamic performance that directly has influence on guideway vehicle.
For satisfying the speed-raising requirement of guideway vehicle high-speed cruising, existing comparatively feasible measure is that the skirtboard material is replaced stainless steel sheet with aluminium sheet.When adopting spot welding to process aluminium matter skirtboard, although can reach the light-weight design requirement, want to obtain enough rigidity and intensity and then must select multilayer structure, as adopt the framed structure of three layers of aluminium sheet.Under the limitation of prior art level and welding gear, can not accurately realize quality after the welding of three layers of aluminium sheet, still there is certain distortion and has influence on the appearance effect of skirtboard integral body.
Summary of the invention
Apron board structure of chassis equipment compartment of the present invention and welding processing thereof, its purpose is to address the above problem the trapezoidal framework structure that adopts three layers of aluminium sheet with defective, three layers of aluminium sheet in turn weld by stacking order, thereby should have under the prerequisite of strength and stiffness reaching skirtboard, satisfy the limited space requirement of skirtboard, realize the equipment compartment light-weight design.
Another goal of the invention is, improves the welding quality of three layers of aluminium sheet, reduces distortion, the good appearance effect of realization after welding.
For achieving the above object, described apron board structure of chassis equipment compartment mainly includes:
Three layers of aluminium sheet, the two-layer aluminium sheet two side ends of its middle and upper part is welded with respectively U-shaped aluminium section bar.
The difference with the prior art part is that three layers of aluminium sheet weld successively by stacking order, and the width of three layers of aluminium sheet is different, but wherein the longitudinal length of two-layer aluminium sheet is identical.
Such as above-mentioned basic scheme, skirtboard adopts three layers of trapezoidal welded structure after the aluminium sheet stack, not only whole shared space after economical with materials and the processing of saving skirtboard.
And based on existing welding technique and Fabricating machinery, the mode that aluminium sheet welds between any two both can guarantee that distortion was less, can satisfy again the designing requirement of strength and stiffness.
For controlling and reducing the material cost of skirtboard and satisfy apron board structure intensity, can select existing common specification, namely the thickness of three layers of aluminium sheet is 3mm.
Be further to improve welding processing quality and skirtboard appearance effect, the innovative approach that can take is, stacks superincumbent two-layer aluminium sheet by the self-clinching standoff riveted joint of boring a hole.
More preferred scheme is that self-clinching standoff should be selected rigidity and the higher material of intensity, selects stainless steel such as self-clinching standoff.
For optimizing the aluminium sheet operability of welding between any two and the quality that guarantees welding, in the process of welding, spot size 〉=7.4mm, minimum Edge Distance 〉=13mm, spot pitch 〉=35mm.
Based on above-mentioned apron board structure of chassis equipment compartment, the present invention has also realized a kind of Novel welding job operation.That is,
The trapezium structure welding of three layers of aluminium sheet, the two-layer aluminium sheet two side ends in top is welded with respectively U-shaped aluminium section bar, and it is different that the longitudinal length of its two-layer aluminium sheet in top is set as width identical but three layers of aluminium sheet,
In implementing the process of welding in twos between the aluminium sheet, in turn weld by stacking order.
Be to improve the self-clinching standoff installation accuracy control, can will stack first superincumbent two-layer aluminium sheet welding, again punching is by the self-clinching standoff riveted joint of boring a hole.
For the preferred implementation that stacks superincumbent two-layer aluminium sheet be, carry out the angle point weldering in vertical two side ends first, then two-layer aluminium sheet carries out the angle point welding on top respectively; Secondly in the overlapping side of two-layer aluminium sheet, carry out respectively resistance spot welding by midway location to two side ends, and point is solid intersegmental apart from five equilibrium.
For the preferred implementation that overlays following two-layer aluminium sheet be, two-layer aluminium sheet two side ends is welded with respectively U-shaped aluminium section bar on top first, forms a structural framing, secondly in vertical two side ends U-shaped aluminium section bar and nethermost aluminium sheet is carried out the angle point weldering;
Then, along the both lateral sides of the top aluminium sheet, carry out the resistance spot welding of intersecting routes with overlaying the overlapping side of following two-layer aluminium sheet;
Resistance spot welding is from a side, carry out to another side along the route of equicrural triangle, then advance to a side from another side, the route that prolongs equicrural triangle, and point is solid intersegmental apart from five equilibrium.
In sum, apron board structure of chassis equipment compartment of the present invention and welding processing thereof have following advantage and beneficial effect:
1, adopts the aluminium sheet of three layers of 3mm thickness to carry out welding processing with trapezoidal framework structure, can satisfy the strength and stiffness requirement of high speed railway car undercarriage equipment compartment skirtboard, under limited space condition, realize the equipment compartment lightweight.
2, the welding quality of three layers of aluminium sheet is higher, effectively prevents the distortion after the welding processing, and the skirtboard appearance effect is better.
3, be conducive to reduce the deadweight of vehicle body bottom frame, improve its dynamic performance, can directly satisfy the speed-raising requirement of guideway vehicle operation.
Description of drawings
Now the present invention is described further by reference to the accompanying drawings.
Fig. 1 is described apron board structure of chassis equipment compartment scheme drawing;
Fig. 2 is that the A-A of Fig. 1 is to generalized section;
Fig. 3 is that the B-B of Fig. 1 is to generalized section;
Fig. 4 is the welding processing scheme drawing that stacks superincumbent two-layer aluminium sheet;
Fig. 5 is the side schematic view of Fig. 4;
Fig. 6 be bore a hole the riveted joint after structural representation;
Fig. 7 is the side schematic view of Fig. 6;
Fig. 8 is the two-layer aluminium sheet that welded above overlaying and the welding processing scheme drawing of U-shaped aluminium section bar;
Fig. 9 is that the C-C of Fig. 8 is to generalized section;
Extremely shown in Figure 9 such as Fig. 1, the first aluminium sheet 1, the second aluminium sheet 2, the 3rd aluminium sheet 3, self-clinching standoff 4, U-shaped aluminium section bar 5.
The specific embodiment
Described the first aluminium sheet 1, the second aluminium sheet 2 and the 3rd aluminium sheet 3 weld successively by stacking order, the width of the 3rd aluminium sheet 3 greater than the width of the second aluminium sheet 2, the second aluminium sheets 2 greater than the first aluminium sheet 1.
The first aluminium sheet 1, the second aluminium sheet 2 and 3, three layers of aluminium plate thickness of the 3rd aluminium sheet are 3mm.
When between the first aluminium sheet 1 and the second aluminium sheet 2, the second aluminium sheet 2 and the 3rd aluminium sheet 3, welding respectively, spot size 〉=7.4mm, minimum Edge Distance 〉=13mm, spot pitch 〉=35mm.
On the basis of adopting above-mentioned apron board structure of chassis equipment compartment, present embodiment has also been realized following welding processing:
The width that is welded with respectively U-shaped aluminium section bar 5, the three aluminium sheets 3 in the two-layer aluminium sheet two side ends in the top of constitution equipment cabin skirtboard greater than the width of the second aluminium sheet 2, the second aluminium sheets 2 greater than the first aluminium sheet 1.
By stacking order in turn, first the first aluminium sheet 1 and the second aluminium sheet 2 are welded, again the second aluminium sheet 2 and the 3rd aluminium sheet 3 are welded.
The first aluminium sheet 1 and the second aluminium sheet 2 are bored a hole, rivet by self-clinching standoff 4 again.
The concrete steps of welding processing are as follows:
Step (1), the first aluminium sheet 1 and the 2 two-sided polishings of the second aluminium sheet, remove oil film and fire coat, the first aluminium sheet 1 and the second aluminium sheet 2 are stacked together and use clamp pressing, carry out angle point in two side ends first and weld with fixing position each other, carry out the angle point welding in the first aluminium sheet 1 both sides and the second aluminium sheet 2 respectively afterwards; Then in the first aluminium sheet 1 and the overlapping side of the second aluminium sheet 2, carry out respectively resistance spot welding by midway location to two side ends, and point is solid intersegmental apart from five equilibrium; Spot size 〉=7.4mm, minimum Edge Distance 〉=13mm, spot pitch 〉=35mm;
Step (2), the first aluminium sheet 1 that spot welding is machined and the second aluminium sheet 2 are placed on the drilling machine and punch, then be placed on carry out self-clinching standoff 4 on the squeeze riveter riveted joint to form a riveting-rack;
Step (3) is fixed on above-mentioned riveting-rack and U-shaped aluminium section bar 5 usefulness anchor clamps on the workplatform, carries out the frame corners welding;
Step (4) is placed on the 3rd aluminium sheet 3 on the workplatform, and the global facility that again step (3) is processed into is placed on the 3rd aluminium sheet 3 and with anchor clamps and is fixed; In vertical two side ends, U-shaped aluminium section bar 5 and the 3rd aluminium sheet 3 are carried out the angle point weldering first; Then along the both lateral sides of the first aluminium sheet 1, carry out the resistance spot welding of intersecting routes at the second aluminium sheet 2 and the 3rd aluminium sheet 3 overlapping sides; Resistance spot welding is from a side, carry out to another side along the route of equicrural triangle, then advance to a side from another side, the route that prolongs equicrural triangle, and point is solid intersegmental apart from five equilibrium; Spot size 〉=7.4mm, minimum Edge Distance 〉=13mm, spot pitch 〉=35mm.
Claims (1)
1. the welding processing of a undercarriage equipment compartment skirtboard, in three layers of trapezoidal welded structure of aluminium sheet of constitution equipment cabin skirtboard, the longitudinal length of the first aluminium sheet (1), the second aluminium sheet (2) is identical, two side ends at the two-layer aluminium sheet in top is welded with respectively U-shaped aluminium section bar (5), the width of the 3rd aluminium sheet (3) is greater than the second aluminium sheet (2), and the width of the second aluminium sheet (2) is greater than the first aluminium sheet (1);
It is characterized in that: the concrete steps of welding processing are as follows,
Step (a), the first aluminium sheet (1), the two-sided polishing of the second aluminium sheet (2), remove oil film and fire coat, the first aluminium sheet (1) and the second aluminium sheet (2) are stacked together and use clamp pressing, carry out angle point in two side ends first and weld with fixing position each other, carry out the angle point welding in the first aluminium sheet (1) both sides and the second aluminium sheet (2) respectively afterwards; Then in the first aluminium sheet (1) and the overlapping side of the second aluminium sheet (2), carry out respectively resistance spot welding by midway location to two side ends, and point is solid intersegmental apart from five equilibrium; Spot size 〉=7.4mm, minimum Edge Distance 〉=13mm, spot pitch 〉=35mm;
Step (b), the first aluminium sheet (1) that spot welding is machined and the second aluminium sheet (2) are placed on the drilling machine and punch, then be placed on carry out self-clinching standoff (4) on the squeeze riveter riveted joint to form a riveting-rack;
Step (c) is fixed on above-mentioned riveting-rack and U-shaped aluminium section bar (5) on the workplatform with anchor clamps, carries out the frame corners welding;
Step (d) is placed on the 3rd aluminium sheet (3) on the workplatform, and the global facility that again step (3) is processed into is placed on the 3rd aluminium sheet (3) and upward and with anchor clamps is fixed; In vertical two side ends, U-shaped aluminium section bar (5) and the 3rd aluminium sheet (3) are carried out the angle point weldering first; Then along the both lateral sides of the first aluminium sheet (1), carry out the resistance spot welding of intersecting routes at the second aluminium sheet (2) and the overlapping side of the 3rd aluminium sheet (3); Resistance spot welding is from a side, carry out to another side along the route of equicrural triangle, and then from another side, advance to a side along the route of equicrural triangle, and point is solid intersegmental apart from five equilibrium; Spot size 〉=7.4mm, minimum Edge Distance 〉=13mm, spot pitch 〉=35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103082765A CN102039906B (en) | 2009-10-14 | 2009-10-14 | Welding method of skirtboard structure of underframe equipment cabin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103082765A CN102039906B (en) | 2009-10-14 | 2009-10-14 | Welding method of skirtboard structure of underframe equipment cabin |
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| CN102039906A CN102039906A (en) | 2011-05-04 |
| CN102039906B true CN102039906B (en) | 2013-05-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097648B (en) * | 2014-07-15 | 2016-09-14 | 中车南京浦镇车辆有限公司 | Rail vehicle driver's head skirtboard welding procedure |
| CN109895799A (en) * | 2019-04-12 | 2019-06-18 | 青岛四方庞巴迪铁路运输设备有限公司 | Lightweight bottom plate and its welding method under a kind of vehicle |
| CN112975236B (en) * | 2021-01-25 | 2022-05-06 | 青岛四方庞巴迪铁路运输设备有限公司 | Assembly welding positioning method for open type underframe frame |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6387469B1 (en) * | 1998-02-17 | 2002-05-14 | Daimlerchrysler Rail Systems Gmbh | Composite part and method for producing the same |
| CN1834275A (en) * | 2006-04-25 | 2006-09-20 | 东北轻合金有限责任公司 | Novel composite aluminium alloy plates and prepn. method |
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2009
- 2009-10-14 CN CN2009103082765A patent/CN102039906B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6387469B1 (en) * | 1998-02-17 | 2002-05-14 | Daimlerchrysler Rail Systems Gmbh | Composite part and method for producing the same |
| CN1834275A (en) * | 2006-04-25 | 2006-09-20 | 东北轻合金有限责任公司 | Novel composite aluminium alloy plates and prepn. method |
Non-Patent Citations (1)
| Title |
|---|
| 杜秋男,李瑞淳.高速动车组裙板设计研究.《铁道车辆》.2008,第46卷(第6期),第16-18页. * |
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Address after: No.86, Jinhong East Road, Chengyang District, Qingdao City, Shandong Province Patentee after: Qingdao Sifang Alstom railway transportation equipment Co.,Ltd. Address before: No.86, Jinhong East Road, Chengyang District, Qingdao City, Shandong Province 266111 Patentee before: BOMBARDIER SIFANG (QINGDAO) TRANSPORTATION Ltd. |
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