CN104475999B - The framework cantilever member reversed deformation welding procedure of subway passenger car bogie - Google Patents
The framework cantilever member reversed deformation welding procedure of subway passenger car bogie Download PDFInfo
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- CN104475999B CN104475999B CN201410713275.XA CN201410713275A CN104475999B CN 104475999 B CN104475999 B CN 104475999B CN 201410713275 A CN201410713275 A CN 201410713275A CN 104475999 B CN104475999 B CN 104475999B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
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Abstract
The framework cantilever member reversed deformation welding procedure of subway passenger car bogie belongs to rail vehicle truck welding method field, this reversed deformation welding procedure is by manufacturing the phantom of true weldment, and by the heat distortion amount of crucial phantom is measured, abstract carry out backward inference computing based on geometrical principle for model drawing and to for abstract model, thus design the new cantilever member with reversed deformation function.The technique of the present invention significantly reduces the range of error of thermal deformation, solves the technical problem that the method for hot adjusting is difficult to accurately control, also improves production efficiency simultaneously, saved manufacturing cost.
Description
Technical field
The invention belongs to rail vehicle truck welding method field, be specifically related to the framework cantilever member reversed deformation welding procedure of a kind of subway passenger car bogie.
Background technology
Structure as depicted in figs. 1 and 2 is the cantilever member on a kind of rail vehicle truck, this cantilever member includes connecting plate 1, gusset 4, beam barrel 5, train wheel bridge 3 and lower plate 2, gusset 4 includes gusset arc section 4-1 and gusset straightway 4-2, both it one-body molded, the front end of gusset straightway 4-2 is provided with gusset half round cut 4-2-1, its diameter is identical with beam barrel 5, the longitudinal side wall being axially perpendicular to gusset 4 of beam barrel 5, and its external diameter sidewall weld is fixed in gusset half round cut 4-2-1.Lower plate 2 includes lower plate slope section 2-1 and lower plate arc section 2-2, one-body molded both it.Train wheel bridge 3 includes train wheel bridge horizontal segment 3-1, train wheel bridge slope section 3-2 and its three in one molding of train wheel bridge arc section 3-3, and train wheel bridge 3 and lower plate 2 are respectively fixedly connected with the upper and lower end face in gusset 4, and its three collectively forms the cantilever beam structure that transverse section is I shape.The lower end of lower plate slope section 2-1 and train wheel bridge slope section 3-2 is tangent with beam barrel 5 respectively and is connected, and the radian of train wheel bridge arc section 3-3 and lower plate arc section 2-2 radian with upper and lower two end faces of gusset arc section 4-1 respectively mates.As shown in Figure 3, when this cantilever member of assembly welding, first beam barrel 5 welding is fixed on aforesaid cantilever beam front end, then connecting plate 1 is vertically placed, again the lower surface of train wheel bridge horizontal segment 3-1 is connected with the upper surface of connecting plate 1, and by the front end of gusset arc section 4-1 and lower plate arc section 2-2, all front end faces with connecting plate 1 weld and are connected, and finally, are welded with the front end face of connecting plate 1 by lower plate arc section 2-2 and are fixed on node J.
If set up the plane right-angle coordinate of xoy with the front end face of connecting plate 1 and the intersection point of train wheel bridge horizontal segment 3-1 lower surface, then according to design requirement, the horizontal stroke in xoy coordinate system of the beam barrel 5 axle center B on this cantilever member, ordinate value all must correspond with given setting value.But, as shown in Figure 3, affected by the welding deformation factor of metal material, standard-sized cantilever member is its arc section meeting bulk deformation after above-mentioned assembly welding process, it is the tilt variation at α angle that the slope section of cantilever beam front end can produce one with theoretical position, and this will result in the coordinate position in beam barrel 5 axle center B point from Design Theory and is offset to not meet intended B1Point position, and make the substandard product that the beam barrel after thermal deformation 5 becomes.
For eliminating the above-mentioned thermal deformation impact on cantilever member, typically require and by the position of Design Theory, the relative position between former components is all rigidly fixed with special reversible deformation fixing tool before assembly welding, to weaken the degree of thermal deformation, after assembly welding completes, in addition it is also necessary to workpiece is carried out measurement repeatedly and distortion inaccuracy is carried out extra hot adjusting.But, manufacture the with high costs of reversible deformation fixing tool, its assembly and disassembly process is loaded down with trivial details, inefficiency, and action effect is limited, another aspect, owing to metal heat-conducting is good, the method for hot adjusting also cannot accurately control the local location of hot spot, causes component to be difficult to by the trend of anticipation and corrects, simultaneously, the extra-stress during hot adjusting applied component may also result in the deformation failure outside expection.
Summary of the invention
In order to solve the with high costs of existing manufacture reversible deformation fixing tool, its assembly and disassembly process is loaded down with trivial details, action effect is limited, and the method for hot adjusting cannot accurately control the local location of hot spot, cause component to be difficult to by the trend of anticipation to correct, component may cause the technical problem of destruction outside expection on the contrary, and the present invention provides the framework cantilever member reversed deformation welding procedure of a kind of subway passenger car bogie.
It is as follows that the present invention solves the technical scheme that technical problem taked:
The framework cantilever member reversed deformation welding procedure of subway passenger car bogie, it is characterised in that: the method comprises the steps:
Step one: on the assembly welding design drawing of cantilever member standard in theory, set up with the front end face of connecting plate and the intersection point of train wheel bridge horizontal segment lower surface the xoy plane right-angle coordinate as initial point, and measure minimum node A1 lateral separation X1 relative to zero O and the fore-and-aft distance Y1 of lower plate slope section lower surface respectively, thus obtain the theoretic coordinate position of node A1；Measure and obtain the theoretic coordinate position of high node H1 of lower plate slope section lower surface by same method；It addition, directly measure length L1 of its long limit E1F1 in the upper surface of train wheel bridge slope section；
Step 2: respectively with the design drawing of single component each in cantilever member for according to making connecting plate, gusset, beam barrel, train wheel bridge and lower plate, then with the external diameter of beam barrel as reference, make the center axle center positioning disc with through hole；The external diameter of described axle center positioning disc is identical with the external diameter of beam barrel, and it is fixed on one end of beam barrel；
Step 3: on the premise of not using original manufacture reversible deformation fixing tool, beam barrel, connecting plate, gusset, train wheel bridge and lower plate with axle center positioning disc described in step 2 is put each other according to the position relationship required by assembly welding design drawing described in step one respectively and aligns, thus form a whole set of deformation angle treating assembly welding test cantilever member；
Step 4: on the premise of not using original manufacture reversible deformation fixing tool, each split parts in the deformation angle test cantilever member treating assembly welding described in step 3 are welded connected respectively one by one by welding sequence, after weldment cools down, obtain a test cantilever discard that can reflect thermal deformation degree；
Step 5: on the test cantilever discard described in step 4, set up with the front end face of connecting plate and the intersection point of train wheel bridge horizontal segment lower surface the xoy plane right-angle coordinate as initial point, and described in the node coordinate measuring method measuring process four as described in step one, test the minimum node A2 of lower plate slope section lower surface on cantilever discard lateral separation X2 relative to zero O and fore-and-aft distance Y2, thus obtain testing the actual coordinate value of the node A2 on cantilever discard；Measure and obtain testing the real coordinate position of the high node H2 of the lower plate slope section lower surface on cantilever discard by same method；
Step 6: the plane right-angle coordinate of the xoy set up on test cantilever discard described in step 5 is depicted as tests cantilever and scraps drawing, and scrap the minimum node A2 of the lower plate slope section lower surface determined respectively on drawing on test cantilever discard and the coordinate position of the high node H2 of lower plate slope section lower surface by actually measured coordinate figure at this test cantilever；
Step 7: it is overlapping that theoretic for cantilever member described in step one assembly welding design drawing scraps the rectangular coordinate system split of both drawings with the test cantilever described in step 6, thus obtain a width and include the abstract result of the test drawing of deformation angle information after welding；On described abstract result of the test drawing, the extending line intersection point of line segment A1H1 and A2H2 is set to node M, and on this figure, directly measures the angle β of line segment A1H1 Yu A2H2；
nullStep 8: the abstract result of the test drawing described in step 7 is simplified further，Delete the train wheel bridge arc section in cantilever member theoretic assembly welding design drawing respectively、Train wheel bridge slope section in cantilever member theoretic assembly welding design drawing，Delete test cantilever the most respectively and scrap the train wheel bridge arc section in drawing、Test cantilever scraps the train wheel bridge slope section in drawing，Final the two total xoy plane right-angle coordinate as initial point with the front end face of connecting plate and the intersection point of train wheel bridge horizontal segment lower surface of only reservation、Before test cantilever discard thermal deformation and after deformation，The center of circle B1 and B2 of its axle center positioning disc location respectively，And before thermal deformation and after deformation，Lower plate slope section lower surface on test cantilever discard location respectively，That is: the angle β of line segment A1H1 Yu A2H2 of deformation angle information after welding is included；Thus obtain the abstract simplification drawing of result of the test；
Step 9: in the abstract simplification drawing described in step 8, with node M as the center of circle, line segment MA1 is rotated counterclockwise an angle beta and then determines and form a new line segment MA3, then with A3 as starting point, with a length of length of side of line segment A1H1, line segment A3M redefines a new line segment A3H3；Hereafter, with the long limit that line segment H3A3 is first rectangle, and the minor face of the one-tenth-value thickness 1/10 drafting rectangle with lower plate slope section, so that it is determined that go out minimum point C3 of reversed deformation welding lower plate slope section upper surface；Then, using the diameter of beam barrel as the length of new diameter C3D3, drawing a diameter and be perpendicular to the circumference of node C3, the center of circle of described circumference is set to B3；The tangent line line segment D3K3 being perpendicular to circle diameter C3D3, the length of described line segment D3K3 length L1 equal to line segment E1F1 described in step one is drawn again with node D3 for point of contact；Finally, using line segment D3K3 as the long limit of second rectangle, and the minor face of the one-tenth-value thickness 1/10 drafting rectangle with train wheel bridge slope section, so that it is determined that go out the peak F3 of reversed deformation welding train wheel bridge slope section upper surface；
Step 10: the peak F3 of the reversed deformation welding train wheel bridge slope section upper surface determined with the step 9 starting point as circular arc with the left side end points G of train wheel bridge horizontal segment for circular arc terminal, the first circular arc F3G the most tangent with line segment E3F3 and line segment OG is drawn in the abstract simplification drawing described in step 8, thus form the Design Theory figure of complete reversed deformation welding train wheel bridge arc section, and then complete the Design Theory figure of whole reversed deformation welding train wheel bridge；
Step 11: with the upper end vertex H3 starting point as circular arc of reversed deformation welding lower plate slope section described in step 9 the terminal with the intersection point J of the lower plate arc section on the assembly welding design drawing of cantilever member standard in theory and connecting plate front end face as arc section, draw one section tangent with summit H3 and be perpendicular to the second circular arc H3J of intersection point J, thus form the Design Theory figure of complete reversed deformation welding lower plate arc section, and then complete the Design Theory figure of whole reversed deformation welding lower plate；
Step 12: utilize center of circle B3, the connecting plate retained in the abstract simplification drawing of result of the test described in step 8 and train wheel bridge horizontal segment described in reversed deformation welding lower plate, step 9 described in reversed deformation welding train wheel bridge, step 11 described in step 10 jointly to surround the profile inner boundary of formation, reconfigure the Design Theory figure generating reversed deformation welding gusset.
The invention has the beneficial effects as follows: this reversed deformation welding procedure by manufacture true weldment phantom and by the heat distortion amount of crucial phantom is measured, abstract carry out backward inference computing based on geometrical principle for model drawing and to for abstract model, thus design the new cantilever member with reversed deformation function, significantly reduce the range of error of thermal deformation, solve the technical problem that the method for hot adjusting is difficult to accurately control, also improve production efficiency simultaneously, save manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of original cantilever member treating assembly welding；
Fig. 2 is the assembly welding design drawing of original cantilever member standard in theory；
Fig. 3 is the thermal deformation Contrast on effect schematic diagram that the welding of original cantilever member is forward and backward；
Fig. 4 is that the framework cantilever member reversed deformation welding procedure of subway passenger car bogie of the present invention treats that the deformation angle of assembly welding tests the schematic diagram of cantilever member；
Fig. 5 is the framework cantilever member reversed deformation welding procedure of the subway passenger car bogie of the present invention abstract rough schematic view to Fig. 2 and the measuring method schematic diagram of key node coordinate position；
Fig. 6 is that the framework cantilever member reversed deformation welding procedure of subway passenger car bogie of the present invention is to testing the measuring method schematic diagram of key node coordinate position on cantilever discard after thermal deformation；
Fig. 7 is to include the abstract result of the test schematic diagram of deformation angle information after welding in the present invention；
Fig. 8 is the abstract rough schematic view of result of the test that the framework cantilever member reversed deformation welding procedure of subway passenger car bogie of the present invention is abstract to Fig. 7 and obtains after simplifying；
Fig. 9 is that the framework cantilever member reversed deformation welding procedure of subway passenger car bogie of the present invention determines the schematic diagram of lower plate slope section angles and positions in reversed deformation cantilever member on the basis of Fig. 8；
Figure 10 is reversed deformation welding train wheel bridge, reversed deformation welding lower plate and the schematic diagram of reversed deformation welding gusset appearance profile that the framework cantilever member reversed deformation welding procedure of subway passenger car bogie of the present invention determines in reversed deformation cantilever member on the basis of Fig. 9 respectively.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further details.
As shown in Fig. 2 to Figure 10, the framework cantilever member reversed deformation welding procedure of the subway passenger car bogie of the present invention, it comprises the steps:
Step one: use conventional engineering drawing software, such as AutoCAD software, on the assembly welding design drawing of the standard in theory of cantilever member as shown in Figure 2, set up with the front end face of connecting plate 1 and the intersection point of train wheel bridge horizontal segment 3-1 lower surface the xoy plane right-angle coordinate as initial point, and measure the minimum node A of lower plate slope section 2-1 lower surface respectively1Lateral separation X relative to zero O1With fore-and-aft distance Y1, thus obtain node A1Theoretic coordinate position.Measure and obtain the high node H of lower plate slope section 2-1 lower surface by same method1Theoretic coordinate position；It addition, directly measure its long limit E in the upper surface of train wheel bridge slope section 3-21F1Length L1.By similar method of geometry, also by the theoretical coordinate position of key node, such as rotary shaft B of beam barrel 5 on other parts on reality measurement acquisition cantilever member1Theoretical coordinate position etc..To the measuring method schematic diagram of the abstract rough schematic view of Fig. 2 and key node coordinate position as shown in Figure 5.
Step 2: respectively with the design drawing of single component each in cantilever member for according to making connecting plate 1, gusset 4, beam barrel 5, train wheel bridge 3 and lower plate 2, then with the external diameter of beam barrel 5 as reference, make the center axle center positioning disc with through hole；The external diameter of described axle center positioning disc is identical with the external diameter of beam barrel 5, and it is fixed on one end of beam barrel 5.
Step 3: on the premise of not using original manufacture reversible deformation fixing tool, beam barrel 5, connecting plate 1, gusset 4, train wheel bridge 3 and lower plate 2 with axle center positioning disc described in step 2 is put each other according to the position relationship required by assembly welding design drawing described in step one respectively and aligns, thus form a whole set of deformation angle treating assembly welding test cantilever member.
During putting, can be with positioning clamping device to connecting plate 1 clamping and positioning, to keep its initial position the most constant, other each parts then can use the auxiliary locator such as cushion block, baffle plate to put, may be used without binding agent glue even, but all positioning aid all must not constitute the position constraint of strength to its positioning body, has ensured that other parts in addition to connecting plate 1 have two axial degree of freedom along xoy plane.
Step 4: on the premise of not using original manufacture reversible deformation fixing tool, each split parts in the deformation angle test cantilever member treating assembly welding described in step 3 are welded connected respectively one by one by welding sequence, after weldment cools down, obtain a test cantilever discard that can reflect thermal deformation degree.
Step 5: on the test cantilever discard described in step 4, foundation is the xoy plane right-angle coordinate as initial point with the front end face of connecting plate 1 and the intersection point of train wheel bridge horizontal segment 3-1 lower surface, and the minimum node A of the lower plate slope section 2-1 lower surface on test cantilever discard described in the node coordinate measuring method measuring process four as described in step one2Lateral separation X relative to zero O2With fore-and-aft distance Y2, thus obtain testing the node A on cantilever discard2Actual coordinate value；Measure and obtain testing the high node H of the lower plate slope section 2-1 lower surface on cantilever discard by same method2Real coordinate position.
Step 6: as shown in Figure 6, utilize AutoCAD software that the plane right-angle coordinate of the xoy set up on test cantilever discard described in step 5 is depicted as test cantilever and scrap drawing, and scrap the minimum node A of the lower plate slope section 2-1 lower surface determined respectively on drawing on test cantilever discard by actually measured coordinate figure at this test cantilever2High node H with lower plate slope section 2-1 lower surface2Coordinate position.
Step 7: as shown in Figure 7, theoretic for cantilever member described in step one assembly welding design drawing is scrapped the rectangular coordinate system split of both drawings overlapping in AutoCAD software with the test cantilever described in step 6, thus obtain a width and include the abstract result of the test drawing of deformation angle information after welding.On described abstract result of the test drawing, by line segment A1H1And A2H2Extending line intersection point be set to node M, and utilize the intrinsic angle measuring function in AutoCAD software directly to measure line segment A on this figure1H1With A2H2Angle β.Owing to the arc length of lower plate arc section 2-2 is shorter, its deflection in thermal deformation process can be ignored substantially, and what therefore the determined node M of this step can approximate regards as lower plate slope section 2-1 lower surface center of rotation in thermal deformation process.
Step 8: in AutoCAD software, the abstract result of the test drawing described in step 7 is simplified further, delete the train wheel bridge arc section 3-3 in cantilever member theoretic assembly welding design drawing respectively, train wheel bridge slope section 3-2 in cantilever member theoretic assembly welding design drawing, delete test cantilever the most respectively and scrap the train wheel bridge arc section 3-4 in drawing, test cantilever scraps the train wheel bridge slope section 3-5 in drawing, final the two total xoy plane right-angle coordinate as initial point with the front end face of connecting plate 1 and the intersection point of train wheel bridge horizontal segment 3-1 lower surface of only reservation, before test cantilever discard thermal deformation and after deformation, the center of circle B of its axle center positioning disc1And B2Respectively before location, and thermal deformation and after deformation, the location respectively of the lower plate slope section 2-1 lower surface on test cantilever discard, it may be assumed that include the line segment A of deformation angle information after welding1H1With A2H2Angle β；Thus obtain the abstract simplification drawing of result of the test as shown in Figure 8.
Step 9: as it is shown in figure 9, in the abstract simplification drawing described in step 8, with node M as the center of circle, by line segment MA1Rotate an angle beta counterclockwise and then determine and form a new line segment MA3, then with A3For starting point, with line segment A1H1The a length of length of side, at line segment A3A new line segment A is redefined on M3H3；Hereafter, with line segment H3A3It is the long limit of first rectangle, and draws the minor face of rectangle with the one-tenth-value thickness 1/10 of lower plate slope section 2-1, so that it is determined that go out minimum point C of reversed deformation welding lower plate slope section 2-3 upper surface3.Then, using the diameter of beam barrel 5 as new diameter C3D3Length, draw a diameter and be perpendicular to node C3Circumference, the center of circle of described circumference is set to B3.Again with node D3Draw for point of contact and be perpendicular to circle diameter C3D3Tangent line line segment D3K3, described line segment D3K3Length equal to line segment E described in step one1F1Length L1.Finally, with line segment D3K3As the long limit of second rectangle, and the minor face of the one-tenth-value thickness 1/10 drafting rectangle with train wheel bridge slope section 3-2, so that it is determined that go out the peak F of reversed deformation welding train wheel bridge slope section 3-6 upper surface3.Aforesaid operations all completes in the electronic drawing of AutoCAD software.The circular through holes of axle center positioning disc is used for quickly determining in step 5 and measuring the coordinate of the axis projections position of beam barrel 5, and auxiliary determines M home position in step 9.
Step 10: as shown in Figure 10, with the peak F of the reversed deformation welding train wheel bridge slope section 3-6 upper surface that step 9 is determined3Starting point for circular arc the left side end points G with train wheel bridge horizontal segment 3-1, for circular arc terminal, draw and line segment E in the abstract simplification drawing described in step 83F3The first circular arc F the most tangent with line segment OG3G, thus form the Design Theory figure of complete reversed deformation welding train wheel bridge arc section 3-7, and then in AutoCAD software, complete the Design Theory figure of whole reversed deformation welding train wheel bridge 3.
Step 11: with upper end vertex H of reversed deformation welding lower plate slope section 2-3 described in step 93Starting point for circular arc the intersection point J with the lower plate arc section 2-2 on the assembly welding design drawing of cantilever member standard in theory and the connecting plate 1 front end face terminal as arc section, draws one section and summit H3Tangent and be perpendicular to the second circular arc H of intersection point J3J, thus form the Design Theory figure of complete reversed deformation welding lower plate arc section 2-5, and then in AutoCAD software, complete the Design Theory figure of whole reversed deformation welding lower plate 2.
Step 12: utilize center of circle B described in reversed deformation welding lower plate 2, step 9 described in reversed deformation welding train wheel bridge 3, step 11 described in step 10 in AutoCAD software3, the connecting plate 1 that retained in the abstract simplification drawing of result of the test described in step 8 and train wheel bridge horizontal segment 3-1 jointly surround the profile inner boundary of formation, reconfigure the Design Theory figure generating reversed deformation welding gusset 7.
As shown in Figure 10, pass through These steps, may finally obtain a new cantilever member design drawing with reversed deformation function in AutoCAD software, this new cantilever member with reversed deformation function includes old connecting plate 1, old beam barrel 5, reversed deformation welding lower plate 2, reversed deformation welding train wheel bridge 3, reversed deformation welding gusset 7.
When specifically applying the framework cantilever member reversed deformation welding procedure of subway passenger car bogie of the present invention, method step as described in this technique makes each split parts of the new cantilever member with reversed deformation function, and they is connected one by one by old cantilever member welding method and order.
Owing to reversed deformation welds lower plate 2, the mode of the prefabricated angle compensation amount that reversed deformation welding train wheel bridge 3 and reversed deformation welding gusset 7 are respectively adopted shifts to an earlier date given lower plate arc section 2-5, train wheel bridge arc section 3-7 and the gusset 7 deformation-compensated amount after sweating heat deforms, therefore, this has the new cantilever member of reversed deformation function can be from Direction distortion expected from trend in cooling procedure after weld job, make based on gusset 7, transverse section is that the cantilever beam of I shape drives beam barrel 5 auto-changing position, and finally make the axle center of beam barrel 5 be fixed on to meet in the range of design error, the working strength of hot adjusting is greatly reduced, even can directly generate the preferable cantilever member meeting design standard.
The framework cantilever member reversed deformation welding procedure of the subway passenger car bogie of the present invention, by manufacturing the phantom of true weldment and by the heat distortion amount of crucial phantom is measured, abstract for model drawing, and carry out backward inference computing based on geometrical principle to for abstract model, thus design the new cantilever member with reversed deformation function, new cantilever member is made can automatically to compensate thermal deformation errors in welding cooling procedure, significantly reduce the range of error of thermal deformation, even can directly generate the preferable cantilever member meeting size tolerance requirements, thus saved manufacturing cost, solve the technical problem that the method for hot adjusting is difficult to accurately control, improve production efficiency.
Claims (1)
1. the framework cantilever member reversed deformation welding procedure of subway passenger car bogie, it is characterised in that: this technique comprises the steps:
Step one: on the assembly welding design drawing of cantilever member standard in theory, set up with the front end face of connecting plate (1) and the intersection point of train wheel bridge horizontal segment (3-1) lower surface the xoy plane right-angle coordinate as initial point, and measure the minimum node A of lower plate slope section (2-1) lower surface respectively1Lateral separation X relative to zero O1With fore-and-aft distance Y1, thus obtain node A1Theoretic coordinate position；Measure and obtain the high node H of lower plate slope section (2-1) lower surface by same method1Theoretic coordinate position；It addition, directly measure its long limit E in the upper surface of train wheel bridge slope section (3-2)1F1Length L1；
Step 2: the design drawing with single component each in cantilever member makes connecting plate (1), gusset (4), beam barrel (5), train wheel bridge (3) and lower plate (2) for foundation respectively, again with the external diameter of beam barrel (5) as reference, make the center axle center positioning disc with through hole；The external diameter of described axle center positioning disc is identical with the external diameter of beam barrel (5), and it is fixed on one end of beam barrel (5)；
Step 3: on the premise of not using original manufacture reversible deformation fixing tool, beam barrel (5), connecting plate (1), gusset (4), train wheel bridge (3) and lower plate (2) with axle center positioning disc described in step 2 is put each other according to the position relationship required by assembly welding design drawing described in step one respectively and aligns, thus form a whole set of deformation angle treating assembly welding test cantilever member；
Step 4: on the premise of not using original manufacture reversible deformation fixing tool, each split parts in the deformation angle test cantilever member treating assembly welding described in step 3 are welded connected respectively one by one by welding sequence, after weldment cools down, obtain a test cantilever discard that can reflect thermal deformation degree；
Step 5: on the test cantilever discard described in step 4, foundation is the xoy plane right-angle coordinate as initial point with the front end face of connecting plate (1) and the intersection point of train wheel bridge horizontal segment (3-1) lower surface, and the minimum node A of lower plate slope section (2-1) lower surface on test cantilever discard described in the method measuring process four as described in step one2Lateral separation X relative to zero O2With fore-and-aft distance Y2, thus obtain testing the node A on cantilever discard2Actual coordinate value；Measure and obtain testing the high node H of lower plate slope section (2-1) lower surface on cantilever discard by same method2Real coordinate position；
Step 6: the plane right-angle coordinate of the xoy set up on test cantilever discard described in step 5 is depicted as tests cantilever and scraps drawing, and scrap the minimum node A of lower plate slope section (2-1) lower surface determined respectively on drawing on test cantilever discard by actually measured coordinate figure at this test cantilever2High node H with lower plate slope section (2-1) lower surface2Coordinate position；
Step 7: it is overlapping that theoretic for cantilever member described in step one assembly welding design drawing scraps the rectangular coordinate system split of both drawings with the test cantilever described in step 6, thus obtain a width and include the abstract result of the test drawing of deformation angle information after welding；On described abstract result of the test drawing, by line segment A1H1And A2H2Extending line intersection point be set to node M, and on this figure, directly measure line segment A1H1With A2H2Angle β；
Step 8: the abstract result of the test drawing described in step 7 is simplified further, delete the train wheel bridge arc section (3-3) in cantilever member theoretic assembly welding design drawing respectively, train wheel bridge slope section (3-2) in cantilever member theoretic assembly welding design drawing, delete test cantilever the most respectively and scrap the train wheel bridge arc section (3-4) in drawing, test cantilever scraps the train wheel bridge slope section (3-5) in drawing, final the two total xoy plane right-angle coordinate as initial point with the front end face of connecting plate (1) and the intersection point of train wheel bridge horizontal segment (3-1) lower surface of only reservation, before test cantilever discard thermal deformation and after deformation, the center of circle B of its axle center positioning disc1And B2Respectively before location, and thermal deformation and after deformation, the location respectively of lower plate slope section (2-1) lower surface on test cantilever discard, it may be assumed that include the line segment A of deformation angle information after welding1H1With A2H2Angle β；Thus obtain the abstract simplification drawing of result of the test；
Step 9: in the abstract simplification drawing described in step 8, with node M as the center of circle, by line segment MA1Rotate an angle beta counterclockwise and then determine and form a new line segment MA3, then with A3For starting point, with line segment A1H1The a length of length of side, at line segment A3A new line segment A is redefined on M3H3；Hereafter, with line segment H3A3It is the long limit of first rectangle, and draws the minor face of rectangle with the one-tenth-value thickness 1/10 of lower plate slope section (2-1), so that it is determined that go out minimum point C of reversed deformation welding lower plate slope section (2-3) upper surface3；Then, using the diameter of beam barrel (5) as new diameter C3D3Length, draw a diameter and be perpendicular to node C3Circumference, the center of circle of described circumference is set to B3；Again with node D3Draw for point of contact and be perpendicular to circle diameter C3D3Tangent line line segment D3K3, described line segment D3K3Length equal to line segment E described in step one1F1Length L1；Finally, with line segment D3K3As the long limit of second rectangle, and the minor face of the one-tenth-value thickness 1/10 drafting rectangle with train wheel bridge slope section (3-2), so that it is determined that go out the peak F of reversed deformation welding train wheel bridge slope section (3-6) upper surface3；
Step 10: with the peak F of reversed deformation welding train wheel bridge slope section (3-6) upper surface that step 9 is determined3Starting point for circular arc the left side end points G with train wheel bridge horizontal segment (3-1) are circular arc terminal, draw and line segment E in the abstract simplification drawing described in step 83F3The first circular arc F the most tangent with line segment OG3G, thus form the Design Theory figure of complete reversed deformation welding train wheel bridge arc section (3-7), and then complete the Design Theory figure of whole reversed deformation welding train wheel bridge (3)；
Step 11: with upper end vertex H of reversed deformation welding lower plate slope section (2-3) described in step 93Starting point for circular arc the intersection point J with the lower plate arc section (2-2) on the assembly welding design drawing of cantilever member standard in theory and connecting plate (1) the front end face terminal as arc section, draws one section and summit H3Tangent and be perpendicular to the second circular arc H of intersection point J3J, thus form the Design Theory figure of complete reversed deformation welding lower plate arc section (2-5), and then complete the Design Theory figure of whole reversed deformation welding lower plate (2)；
Step 12: utilize center of circle B described in reversed deformation welding lower plate (2), step 9 described in reversed deformation welding train wheel bridge (3), step 11 described in step 103, the connecting plate (1) that retained in the abstract simplification drawing of result of the test described in step 8 and train wheel bridge horizontal segment (3-1) jointly surround the profile inner boundary of formation, reconfigure the Design Theory figure generating reversed deformation welding gusset (7).
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