CN103056538B - A kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method - Google Patents
A kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method Download PDFInfo
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- CN103056538B CN103056538B CN201210584871.3A CN201210584871A CN103056538B CN 103056538 B CN103056538 B CN 103056538B CN 201210584871 A CN201210584871 A CN 201210584871A CN 103056538 B CN103056538 B CN 103056538B
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Abstract
The invention belongs to electronic carriage of mining self-unloading vehicle processing technique field, be specifically related to a kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method, comprise the steps: the welded gaps of reserved 4-6mm respectively between the web of two described side bar assemblies and the web of middle longeron assembly; Respectively two described side bar assemblies are welded with described middle longeron assembly, welding sequence is: weld the weld seam that described side bar assembly web both sides are connected with the described middle longeron assembly outside of belly simultaneously, weld the weld seam that described side bar assembly lower wing plate is connected with described middle longeron assembly lower wing plate, the effective fusion penetration of weld seam is 2/3 of described side bar assembly lower wing plate wall thickness, upset girder, welds the weld seam that described side bar assembly upper flange is connected with described middle longeron assembly upper flange.The invention has the beneficial effects as follows the welding deformation successfully controlling electronic carriage of mining self-unloading vehicle Main Girder Welding structure, improve vehicle frame production and processing efficiency, ensure that vehicle frame crudy, meet design and process specifications.
Description
Technical field
The invention belongs to electronic carriage of mining self-unloading vehicle processing technique field, be specifically related to a kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method.
Background technology
The frame assembly of electronic quarry tipper is formed primarily of middle longeron assembly, side bar assembly, flank beam assembly, and wherein frame assembly is taked after side bar assembly and the welding of middle longeron assembly integral, and the mode be connected with flank beam assembly by bolt is formed.The vehicle frame main beam welding structural element formed by welding by middle longeron and side bar is the agent structure in whole bodywork system, very high to the dimension precision requirement after welding.From car load stressing conditions and service condition analysis, the key of girder assembly processing is to ensure girder assembly integral dimensional accuracy and welding quality.Independently sub-unit is owing to forming longeron assembly and side bar assembly in girder assembly, if after machining each sub-unit separately by technical requirement on design when carrying out the welding of girder assembly, under same weld condition, side bar assembly is consistent with the welded condition that middle longeron assembly web welds and technical conditions, the impact of the welding contraction distortion produced during welding on the precision of girder size is less, and on side bar assembly and middle longeron assembly lower wing plate welded condition and weldering amount all inconsistent, the mother metal wall thickness carrying out welding with middle longeron assembly lower wing plate is greater than the mother metal wall thickness carrying out with upper flange welding, namely the weld seam loading welded with lower wing plate is greater than the weld seam loading welded with upper flange, postwelding side bar assembly integral is to the contraction distortion of lower wing plate direction, the perpendicularity of the flank beam connecting plate in side bar assembly and workbench is caused to there is relatively large deviation, the machine affecting flank beam connecting plate adds state.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of processing method controlling welding deformation in electronic carriage of mining self-unloading vehicle Main Girder Welding structure process.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method, Main Girder Welding structure is formed by welding by middle longeron assembly and two side bar assemblies, comprises the steps:
The welded gaps of 4-6mm is reserved respectively between the web of two described side bar assemblies and the web of middle longeron assembly.After welding forms side bar assembly, on side bar assembly respectively to its two coxostermums overall processing to design size, be used for controlling the fitted position precision with middle longeron, for welded gaps is reserved in the welding of girder.
Welded with described middle longeron assembly by two described side bar assemblies respectively, welding sequence is:
The welded gaps of 4-6mm is reserved respectively between the web of two described side bar assemblies and the web of middle longeron assembly;
Welded with described middle longeron assembly by two described side bar assemblies respectively, welding sequence is:
Weld the weld seam that described side bar assembly web both sides are connected with the described middle longeron assembly outside of belly simultaneously, weld the weld seam that described side bar assembly lower wing plate is connected with described middle longeron assembly lower wing plate, the effective fusion penetration of weld seam is 2/3 of described side bar assembly lower wing plate wall thickness, upset girder, welds the weld seam that described side bar assembly upper flange is connected with described middle longeron assembly upper flange.
Preferably, after the described side bar of welding and described middle longeron, carry out stress relief annealing to the weld seam after welding, stress relief annealing temperature is 400 ~ 450 DEG C.Eliminate the impact of welding stress on girder assembly dimensional accuracy by the mode of heat treatment stress relief annealing, stablize girder process technology state.
Preferably, multi-pass welding is adopted when welding described side bar assembly and described middle longeron assembly.
Preferred, after the weld seam be connected with central sill assembly upper flange side bar assembly upper flange welds, again overturn girder, cover welding is carried out to the weld seam that side bar assembly lower wing plate is connected with middle longeron assembly lower wing plate.Its object is to the reversal deformation produced by welding contraction distortion and the deadweight of girder assembly of fillet in normal shear, eliminate side bar assembly lower wing plate and middle longeron assembly lower wing plate welding contraction distortion amount.
Further preferred, adopt multi-pass welding during welding when the weld seam be connected with middle longeron assembly lower wing plate side bar assembly lower wing plate carries out capping.
The invention has the beneficial effects as follows the welding deformation successfully controlling electronic carriage of mining self-unloading vehicle Main Girder Welding structure, improve vehicle frame production and processing efficiency, ensure that vehicle frame crudy, meet design and process specifications.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is further described in detail.
Fig. 1 is the structural representation of the embodiment of the present invention electronic carriage of mining self-unloading vehicle Main Girder Welding structure.
Detailed description of the invention
220T level heavy type electric carriage of mining self-unloading vehicle Main Girder Welding structure as shown in Figure 1, is formed by welding by middle longeron assembly 1 and two side bar assemblies 2.For a middle longeron assembly 1 and a side bar assembly 2, electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method is: before welding, middle longeron assembly 1 and side bar assembly 2 are assembled, reserve the welded gaps of 6mm at the web 21 of side bar assembly 2 and the web 11 of middle longeron assembly 1, in adjustment side bar assembly, flank beam connecting plate 24 makes it to be not more than 1mm with the perpendicularity deviation of workbench horizontal plane.Adopt the mode of multi-pass welding to be welded with middle longeron assembly 2 by side bar assembly 1, welding sequence is: the weld seam that the first step, the side bar of both sides welding simultaneously assembly web 21 are connected with middle longeron assembly web 11; The weld seam that second step, welding side bar assembly lower wing plate 23 are connected with middle longeron assembly lower wing plate 13, the effective fusion penetration of weld seam is 2/3 of side bar assembly lower wing plate wall thickness; Upset girder, the weld seam that welding side bar assembly upper flange 22 is connected with middle longeron assembly upper flange 12; 3rd step, overturns girder again, carries out cover welding to the weld seam that side bar assembly lower wing plate 23 is connected with middle longeron assembly lower wing plate 13.After welding, stress relief annealing is carried out to the weld seam after welding, stress relief annealing temperature is 400 ~ 450 DEG C, after stress relief annealing, the bulk deformation amount of the flank beam connecting plate 24 after formation girder is detected, flank beam connecting plate 24 is overall is 2.5mm with the perpendicularity deviation of workbench level reference, meets follow-up machining technique requirement.Carry out machined finally by 16m digital control plane milling and boring machine offside spar connecting plate 24, remove the allowance of reserved flank beam connecting plate 24, ensure the accurate to dimension of girder.
The embodiment of the present invention, by above processing method, successfully controls the welding deformation of vehicle frame main beam, and its dimensional accuracy meets technical requirement on design, and through follow-up sport car experimental verification, its dimensional accuracy does not change, and using state is stablized.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. an electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method, Main Girder Welding structure is formed by welding by middle longeron assembly and two side bar assemblies, it is characterized in that, comprises the steps:
The welded gaps of 4-6mm is reserved respectively between the web of two described side bar assemblies and the web of middle longeron assembly;
Welded with described middle longeron assembly by two described side bar assemblies respectively, welding sequence is:
Weld the weld seam that described side bar assembly web both sides are connected with described middle longeron assembly web simultaneously,
Weld the weld seam that described side bar assembly lower wing plate is connected with described middle longeron assembly lower wing plate, the effective fusion penetration of weld seam is 2/3 of described side bar assembly lower wing plate wall thickness,
Upset girder, welds the weld seam that described side bar assembly upper flange is connected with described middle longeron assembly upper flange,
Again overturn girder, cover welding is carried out to the weld seam that described side bar assembly lower wing plate is connected with middle longeron assembly lower wing plate.
2. electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method according to claim 1, is characterized in that, adopt multi-pass welding when welding described side bar assembly and described middle longeron assembly.
3. electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method according to claim 1, is characterized in that, the welding when weld seam be connected with described middle longeron assembly lower wing plate described side bar assembly lower wing plate carries out capping adopts multi-pass welding.
4. electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method according to claim 1, it is characterized in that, after the described side bar assembly of welding and described middle longeron assembly, carry out stress relief annealing to the weld seam after welding, stress relief annealing temperature is 400 ~ 450 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584871.3A CN103056538B (en) | 2012-12-28 | 2012-12-28 | A kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210584871.3A CN103056538B (en) | 2012-12-28 | 2012-12-28 | A kind of electronic carriage of mining self-unloading vehicle Main Girder Welding structure processing method |
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| CN103056538A CN103056538A (en) | 2013-04-24 |
| CN103056538B true CN103056538B (en) | 2015-09-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2521114Y (en) * | 2001-12-04 | 2002-11-20 | 中国国际海运集装箱(集团)股份有限公司 | Conneeting structure of semi-trailer auxiliary frame |
| CN2714408Y (en) * | 2004-02-12 | 2005-08-03 | 熊辉 | Platform trailer frame |
| CN102616279A (en) * | 2011-01-27 | 2012-08-01 | 中集车辆（集团）有限公司 | Semitrailer frame and semitrailer employing same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4157211B2 (en) * | 1999-02-05 | 2008-10-01 | 新日本製鐵株式会社 | Steel segment and its manufacturing method |
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- 2012-12-28 CN CN201210584871.3A patent/CN103056538B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2521114Y (en) * | 2001-12-04 | 2002-11-20 | 中国国际海运集装箱(集团)股份有限公司 | Conneeting structure of semi-trailer auxiliary frame |
| CN2714408Y (en) * | 2004-02-12 | 2005-08-03 | 熊辉 | Platform trailer frame |
| CN102616279A (en) * | 2011-01-27 | 2012-08-01 | 中集车辆（集团）有限公司 | Semitrailer frame and semitrailer employing same |
Non-Patent Citations (1)
| Title |
|---|
| 大跨度大截面吊车梁现场制作工艺;年夫臣等;《钢结构》;20090630;第24卷(第6期);第57-60页 * |
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