CN102357751A - Reversible deformation tailor-welding method for crawler beam of excavator - Google Patents
Reversible deformation tailor-welding method for crawler beam of excavator Download PDFInfo
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- CN102357751A CN102357751A CN201110261978XA CN201110261978A CN102357751A CN 102357751 A CN102357751 A CN 102357751A CN 201110261978X A CN201110261978X A CN 201110261978XA CN 201110261978 A CN201110261978 A CN 201110261978A CN 102357751 A CN102357751 A CN 102357751A
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- thrust wheel
- excavator
- reversible deformation
- installing plate
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Abstract
The invention provides a reversible deformation tailor-welding method for a crawler beam of an excavator. The method comprises the following steps: assembling beams, transferring the assembled beams to a welding turnover frame for welding, and welding welded beams together with a driving wheel support and a guide wheel support to form the crawler beam. The reversible deformation tailor-welding method is characterized in that when the beams are assembled, a process padding block is arranged at the lower side of a thrust wheel installation plate to raise the thrust wheel installation plate so as to generate predeformation. The method provided by the invention has the advantages of solving the problem that the flatness of a thrust wheel installation surface is extraordinary bad due to the deformation of the thrust wheel installation plate of the beams caused by welding and omitting the procedures such as correction or machining and the like.
Description
Technical field
The present invention relates to a kind of excavator crawler belt beam reversible deformation butt welding method, belong to the welding technique field.
Background technology
The crawler belt beam is the vitals that constitutes chassis under the excavator, and it is related to the stability of excavator walking states and duty.As shown in Figure 1, be crawler belt beam side view, Fig. 2 is its vertical view, described crawler belt beam is welded to form by drive wheel bracket 1, beam 2 and guide wheel support 3 three parts.As shown in Figure 3, be the beam side view, the flatness size of the thrust wheel installed surface of its central sill is the important factor that influences excavator walking states and stability under working conditions.Excavator weight is passed to ground through the crawler belt beam by thrust wheel, makes the weight on top reach ground uniformly through thrust wheel.If the flatness of thrust wheel installed surface does not reach requirement, cause the thrust wheel discontinuity, will influence the service life of thrust wheel.
As shown in Figure 4, be beam section figure, Fig. 5 is an I place enlarged drawing among Fig. 4; When using conventional welding procedure; The thrust wheel installing plate 4 welding back deformation angle β of beam are 2 °, and f=Bsin2 °, wherein f is thrust wheel installing plate 5 Welding Angular Deformation amounts; B is the width 75mm of 4 thrust wheel installing plates, so draw 4 thrust wheel installing plate Welding Angular Deformation amount f=3mm.
To this influence factor, the flatness that adopts postwelding machining to guarantee the thrust wheel installed surface is had plenty of by excavator manufacturer both at home and abroad.And more producer wants through improving the purpose that welding procedure reaches the control distortion, guarantees the flatness of thrust wheel installed surface.Purpose is to reduce manufacturing cost, raises the efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of excavator crawler belt beam reversible deformation butt welding method.
In order to achieve the above object, the invention provides a kind of excavator crawler belt beam reversible deformation butt welding method, comprising: spliced girder; Beam is transferred to welding weld on the rollover stand, the beam after weld and drive wheel bracket and guide wheel support are welded together formation crawler belt beam; It is characterized in that; When spliced girder, the technology cushion block is located at thrust wheel installing plate downside, make thrust wheel installing plate bed hedgehopping produce predeformation amount.
Preferably, treat that beam welding is accomplished after, the Welding Angular Deformation amount of thrust wheel installing plate and the predeformation amount of thrust wheel installing plate are cancelled out each other.
Preferably, the tilt angle alpha of the upper surface of described technology cushion block is 2 °, and the high h of its higher sidewall is 3mm.
Advantage of the present invention is to have solved welding and cause that the thrust wheel installing plate distortion of beam causes the overproof problem of thrust wheel installed surface flatness, has saved operations such as rectification or machined.
Description of drawings
Fig. 1 is a crawler belt beam side view;
Fig. 2 is a crawler belt beam vertical view;
Fig. 3 is the beam side view;
Fig. 4 is beam section figure;
Fig. 5 is an I place enlarged drawing among Fig. 4;
Fig. 6 is assembling process side view (omitting location, clamping element among the figure);
Fig. 7 is the assembling process vertical view;
Fig. 8 is the assembling process sectional view;
Fig. 9 is an II place enlarged drawing among Fig. 8;
Figure 10 is a technology cushion block sketch map;
Figure 11 is reversible deformation welding back rest side view;
Figure 12 is reversible deformation welding back rest sectional view.
Among the figure: 1 is drive wheel bracket, and 2 is beam, and 3 is the guide wheel support, and 4 is the thrust wheel installing plate, and 5 is the technology cushion block, and 6 is gusset, and 7 is frid, and 8 is platform for lining.
The specific embodiment
The present invention will be described below in conjunction with embodiment.
Embodiment: excavator crawler belt beam reversible deformation butt welding method
(1) like Fig. 6～shown in Figure 9, filling up 10 technology cushion blocks 5 on the platform for lining 8,2 thrust wheel installing plates 4 of assembly unit; Technology cushion block 5 is located at thrust wheel installing plate 4 downsides, makes thrust wheel installing plate 4 bed hedgehoppings produce predeformation amount, locate and compress; Shown in figure 10, be technology cushion block sketch map, the tilt angle alpha of the upper surface of described technology cushion block 5 is 2 °; The high h of its higher sidewall is 3mm, and long L is 10mm.。
(2) according to the art work sheet dimensional requirement, 4 gussets 6 of assembly unit, location and spot welding are fixed.
(3) lifting frid 7, adjustment frid 7 makes and reaches the fitted position requirement, and location and spot welding are fixed, and form beam 2.
The predeformation amount of thrust wheel installing plate 4 is 3mm at this moment.
(4) beam 2 is transferred to welded grider 2 on the welding rollover stand.Welding back Welding Angular Deformation amount and thrust wheel installing plate 4 predeformation amounts are cancelled out each other, and make thrust wheel installing plate 4 flatnesses reach requirement.
(5) beam after will having welded 2 and drive wheel bracket 1,3 weldings of guide wheel support form the crawler belt beam.Shown in figure 11, be reversible deformation welding back rest side view, Figure 12 is its sectional view.
(6) change road flow process down through being up to the standards.Adopt excavator crawler belt beam reversible deformation butt welding method of the present invention, can guarantee that thrust wheel installing plate 4 flatnesses of beam reach requirement, reduce the rectification or the machining processes of manufacture process, enhance productivity, reduce the excavator manufacturing cost.
Claims (3)
1. excavator crawler belt beam reversible deformation butt welding method comprises: spliced girder (2), and beam (2) transferred on the welding rollover stand weld; Beam after having welded (2) and drive wheel bracket (1) and guide wheel support (3) are welded together; Form the crawler belt beam, it is characterized in that, when spliced girder (2); Technology cushion block (5) is located at thrust wheel installing plate (4) downside, makes thrust wheel installing plate (4) bed hedgehopping produce predeformation amount.
2. excavator crawler belt beam reversible deformation butt welding method as claimed in claim 1 is characterized in that, treat that beam (2) welding is accomplished after, the predeformation amount of the Welding Angular Deformation amount of thrust wheel installing plate (4) and thrust wheel installing plate (4) is cancelled out each other.
3. according to claim 1 or claim 2 excavator crawler belt beam reversible deformation butt welding method is characterized in that the tilt angle alpha of the upper surface of described technology cushion block (5) is 2 °, and the high h of its higher sidewall is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110261978XA CN102357751A (en) | 2011-09-06 | 2011-09-06 | Reversible deformation tailor-welding method for crawler beam of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110261978XA CN102357751A (en) | 2011-09-06 | 2011-09-06 | Reversible deformation tailor-welding method for crawler beam of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102357751A true CN102357751A (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110261978XA Pending CN102357751A (en) | 2011-09-06 | 2011-09-06 | Reversible deformation tailor-welding method for crawler beam of excavator |
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| CN (1) | CN102357751A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015804A (en) * | 2014-06-16 | 2014-09-03 | 天津柳工机械有限公司 | Three-section type semi-rigid pivot bogie frame of bulldozer |
| CN104354776A (en) * | 2014-11-13 | 2015-02-18 | 湖南三特机械制造有限公司 | Welding type guide wheel body and production method thereof |
| CN106513981A (en) * | 2016-12-06 | 2017-03-22 | 上海航天设备制造总厂 | Special backing plate for friction-stir welding and welding method adopting backing plate |
| CN111805114A (en) * | 2020-07-22 | 2020-10-23 | 中国船舶重工集团柴油机有限公司 | Welding method for steel structure frame and steel structure frame |
| CN114406620A (en) * | 2022-01-27 | 2022-04-29 | 江苏润邦重工股份有限公司 | Production and manufacturing process of main steel structural member of hydraulic material grabbing machine |
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| CN101637854A (en) * | 2008-07-28 | 2010-02-03 | 南车青岛四方机车车辆股份有限公司 | Reverse deformation processing method for aluminum alloy bodywork welding |
| CN101693328A (en) * | 2009-10-26 | 2010-04-14 | 浙江大地钢结构有限公司 | Stainless steel sheet welding method capable of controlling deformation |
| KR100961386B1 (en) * | 2009-11-27 | 2010-06-07 | 유전공업(주) | Reverse-deformation jig device for weld deformation modification |
| CN201815825U (en) * | 2010-09-29 | 2011-05-04 | 龙工（上海）挖掘机制造有限公司 | Reverse deformation/pre-deformation welding positioner for bearing wheel bracket of excavating machine |
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2011
- 2011-09-06 CN CN201110261978XA patent/CN102357751A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101637854A (en) * | 2008-07-28 | 2010-02-03 | 南车青岛四方机车车辆股份有限公司 | Reverse deformation processing method for aluminum alloy bodywork welding |
| CN101693328A (en) * | 2009-10-26 | 2010-04-14 | 浙江大地钢结构有限公司 | Stainless steel sheet welding method capable of controlling deformation |
| KR100961386B1 (en) * | 2009-11-27 | 2010-06-07 | 유전공업(주) | Reverse-deformation jig device for weld deformation modification |
| CN201815825U (en) * | 2010-09-29 | 2011-05-04 | 龙工（上海）挖掘机制造有限公司 | Reverse deformation/pre-deformation welding positioner for bearing wheel bracket of excavating machine |
Non-Patent Citations (1)
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| 中国机械工程学会焊接学会: "《焊接手册 第3卷 焊接结构》", 31 December 1992, 机械工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015804A (en) * | 2014-06-16 | 2014-09-03 | 天津柳工机械有限公司 | Three-section type semi-rigid pivot bogie frame of bulldozer |
| CN104354776A (en) * | 2014-11-13 | 2015-02-18 | 湖南三特机械制造有限公司 | Welding type guide wheel body and production method thereof |
| CN106513981A (en) * | 2016-12-06 | 2017-03-22 | 上海航天设备制造总厂 | Special backing plate for friction-stir welding and welding method adopting backing plate |
| CN111805114A (en) * | 2020-07-22 | 2020-10-23 | 中国船舶重工集团柴油机有限公司 | Welding method for steel structure frame and steel structure frame |
| CN114406620A (en) * | 2022-01-27 | 2022-04-29 | 江苏润邦重工股份有限公司 | Production and manufacturing process of main steel structural member of hydraulic material grabbing machine |
| CN114406620B (en) * | 2022-01-27 | 2023-09-08 | 江苏润邦重工股份有限公司 | Production and manufacturing process of main steel structural part of hydraulic material grabbing machine |
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Application publication date: 20120222 |