CN102430866A - Method for preventing deformation of reinforcement steel plate welded on top flange of crane girder - Google Patents
Method for preventing deformation of reinforcement steel plate welded on top flange of crane girder Download PDFInfo
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- CN102430866A CN102430866A CN2010102963829A CN201010296382A CN102430866A CN 102430866 A CN102430866 A CN 102430866A CN 2010102963829 A CN2010102963829 A CN 2010102963829A CN 201010296382 A CN201010296382 A CN 201010296382A CN 102430866 A CN102430866 A CN 102430866A
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- crane girder
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Abstract
The invention discloses a method for preventing the deformation of a reinforcement steel plate welded on a top flange of a crane girder. When the reinforcement steel plate is welded on the top flange of the crane girder, firstly, at least 3 through holes are made in the centerline position of the reinforcement steel plate along the length direction, the reinforcement steel plate is placed on the top flange of the crane girder, and the positions between edges at two sides of the top flange of the crane girder and the reinforcement steel plate are welded. The welding method comprises the following steps of: (1) intermittent welding; and (2) alternate repair welding on both sides. The method for performing intermittent welding and alternate repair welding on the edges at two sides of the top flange of the crane girder is adopted and the through holes are made on the reinforcement steel plate, not only the welding stress generated during welding can be effectively eliminated, but also the deformation of the reinforcement steel plate during welding can be effectively prevented. The method not only can effectively reduce and prevent the possibility of deformation when the reinforcement steel plate is welded on the top flange of the crane girder, but also has the advantages of simple structure and convenience for construction.
Description
Technical field
The present invention relates to a kind of method that prevents crane girder top flange weld reinforcement steel plate deformed, belong to the crane girder welding technology field.
Background technology
At present; Existing many crane girders can't attachment rail because design is narrow, could use behind the reinforcement steel plate of a broad of repair welding above that, promptly directly the mode of reinforcement steel plate through common welding directly is welded on the top flange of crane girder; But when adopting existing method to weld; Often make this reinforcement steel plate cause distortion because of welding, this not only can influence the installation of track, but also can influence the normal operation of crane.Therefore existing method at crane girder top flange weld reinforcement steel plate still is not ideal enough, can not satisfy the needs of use.
Summary of the invention
The objective of the invention is: a kind of method that prevents crane girder top flange weld reinforcement steel plate deformed easy to operate, simple in structure is provided, to overcome the deficiency of prior art.
The present invention is achieved in that a kind of method that prevents crane girder top flange weld reinforcement steel plate deformed of the present invention; Be when the top flange of crane girder being carried out the welding of reinforcement steel plate; Earlier along its length position of center line place produces at least 3 through holes on the reinforcement steel plate, then the reinforcement steel plate is placed on the top flange of crane girder, between the both sides of the edge of the top flange of crane girder and reinforcement steel plate, welds then; When welding, weld according to the following steps:
The first step; Adopt intermittent weld; Promptly between lateral edges of the top flange of crane girder and reinforcement steel plate, weld out earlier a segment length and be 100～200 millimeters weld seam; And then between the opposite side edge of the top flange of car beam and reinforcement steel plate, to weld out another segment length be 100～200 millimeters weld seam; The position of both sides weld seam is staggeredly arranged (that is: the weld seam that makes both sides does not intersect with the car beam straight line that center line is vertical along its length with same), so replaces welding, can between the both sides of the edge, top flange of crane girder and reinforcement steel plate, weld out the weld seam of discontinuous like this on the both sides, top flange of car beam;
Second step; Both sides replace repair welding; Etc. the weld seam of first step discontinuous all naturally after the cooling, respectively the discontinuities between the weld seam of the discontinuous of the both sides of the edge, top flange of crane girder is carried out the alternately repair welding of dual-side again, up to all being welded, all residue sections finish.
Through hole on the reinforcement steel plate is an elliptical aperture, and the distance of being separated by between per two elliptical apertures is 200～500 millimeters.
Owing to adopted technique scheme; The present invention is employed in the both sides of the edge, top flange of crane girder and is interrupted the method for welding and replacing repair welding; And on the reinforcement steel plate, through hole is set; The welding stress that is produced in the time of can not only eliminating welding so effectively, and can also prevent effectively that the reinforcement steel plate from deforming when welding.Therefore, the present invention compared with prior art, the possibility that the present invention deforms in the time of can not only reducing and prevent on the top flange of crane girder weld reinforcement steel plate effectively, but also have the advantage of processing ease, simple in structure, easy construction.
Description of drawings
Fig. 1 is welded on the structural representation on the top flange of crane girder for reinforcement steel plate of the present invention;
The be staggeredly arranged sketch map of Fig. 2 during for the upward view of Fig. 1 and for first step intermittent weld;
Fig. 3 is the plan structure sketch map of Fig. 1.
Description of reference numerals: 1-crane girder, 2-reinforcement steel plate, 3-through hole, 4-weld seam.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
Embodiments of the invention: when the top flange of existing crane girder 1 being carried out 2 welding of reinforcement steel plate; Adopt a kind of method of crane girder top flange weld reinforcement steel plate deformed that prevents of the present invention to weld; Promptly; Earlier along its length position of center line place produces at least 3 through holes 3 on reinforcement steel plate 2, and the through hole 3 on this reinforcement steel plate 2 preferably is made into elliptical aperture, also can be made into circular hole; The width of its elliptical aperture or the diameter of circular hole can be confirmed as required; Generally can in 6～30 millimeters scope, select, the length of elliptical aperture can be selected in 10～60 millimeters scope, during making the distance L of being separated by between per two elliptical apertures is controlled at 200～500 millimeters; Then reinforcement steel plate 2 is placed on the top flange of crane girder 1 (as shown in Figure 1), between the both sides of the edge of the top flange of crane girder 1 and reinforcement steel plate 2, welds then, when welding, weld according to the following steps:
The first step; Adopt intermittent weld; Promptly between lateral edges of the top flange of crane girder 1 and reinforcement steel plate 2, weld out earlier a segment length and be 100～200 millimeters weld seam 4; And then between the opposite side edge of the top flange of car beam 1 and reinforcement steel plate 2, to weld out another segment length be 100～200 millimeters weld seam 4; The position of both sides weld seam 4 is staggeredly arranged (that is: the weld seam on both sides is not intersected with same straight line; This straight line is and the car beam perpendicular straight line of center line along its length), so replace welding on the both sides, top flange of car beam 1, can between the both sides of the edge, top flange of crane girder 1 and reinforcement steel plate 2, weld out the weld seam 4 (as shown in Figure 2) of discontinuous like this;
Second step; Both sides replace repair welding; Weld seam 4 etc. first step discontinuous all cools off back (welding stress is disappeared) naturally; Respectively the discontinuities between the weld seam 4 of the discontinuous of the both sides of the edge, top flange of crane girder 1 is carried out the alternately repair welding of dual-side again, up to all residue sections all welding finish (as shown in Figure 3).
Claims (2)
1. method that prevents crane girder top flange weld reinforcement steel plate deformed; It is characterized in that: when the top flange of crane girder (1) being carried out reinforcement steel plate (2) welding; Earlier along its length position of center line place produces at least 3 through holes (3) on reinforcement steel plate (2); Then reinforcement steel plate (2) is placed on the top flange of crane girder (1); Between the both sides of the edge of the top flange of crane girder (1) and reinforcement steel plate (2), weld then, when welding, weld according to the following steps:
The first step; Adopt intermittent weld; Promptly between lateral edges of the top flange of crane girder (1) and reinforcement steel plate (2), weld out earlier a segment length and be 100～200 millimeters weld seam (4); And then between the opposite side edge of the top flange of Che Liang (1) and reinforcement steel plate (2), to weld out another segment length be 100～200 millimeters weld seam (4); The position of both sides weld seam (4) is staggeredly arranged (that is: the weld seam on both sides is not intersected with the car beam straight line that center line is vertical along its length with same); So replace welding, can between the both sides of the edge, top flange of crane girder (1) and reinforcement steel plate (2), weld out the weld seam (4) of discontinuous like this on the both sides, top flange of Che Liang (1);
Second step; Both sides replace repair welding; After the whole coolings naturally of the weld seam (4) of first step discontinuous; Respectively the discontinuities between the weld seam (4) of the discontinuous of the both sides of the edge, top flange of crane girder (1) is carried out the alternately repair welding of dual-side again, up to all residue sections all welding finish.
2. the method that prevents crane girder top flange weld reinforcement steel plate deformed according to claim 1 is characterized in that: the through hole (3) on the reinforcement steel plate (2) is an elliptical aperture, and the distance (L) of being separated by between per two elliptical apertures is 200～500 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010296382.9A CN102430866B (en) | 2010-09-29 | 2010-09-29 | Method for preventing deformation of reinforcement steel plate welded on top flange of crane girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010296382.9A CN102430866B (en) | 2010-09-29 | 2010-09-29 | Method for preventing deformation of reinforcement steel plate welded on top flange of crane girder |
Publications (2)
| Publication Number | Publication Date |
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| CN102430866A true CN102430866A (en) | 2012-05-02 |
| CN102430866B CN102430866B (en) | 2014-12-10 |
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| CN201010296382.9A Expired - Fee Related CN102430866B (en) | 2010-09-29 | 2010-09-29 | Method for preventing deformation of reinforcement steel plate welded on top flange of crane girder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043892A (en) * | 2014-06-27 | 2014-09-17 | 中航虹波风电设备有限公司 | Technology for supporting barrel to be circular |
| CN104588921A (en) * | 2014-11-12 | 2015-05-06 | 南通中远川崎船舶工程有限公司 | Deformation prevention structure for thin plate welding and process method |
| CN104768691A (en) * | 2012-11-13 | 2015-07-08 | 卡特彼勒Sarl公司 | Welded structure and machinery |
| CN109262154A (en) * | 2018-09-28 | 2019-01-25 | 武汉船用机械有限责任公司 | A kind of production method of scattered cable saddle |
| CN109848636A (en) * | 2019-03-22 | 2019-06-07 | 宝胜系统集成科技股份有限公司 | A kind of welding method of built up column |
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| US20040197135A1 (en) * | 2003-04-07 | 2004-10-07 | Pei-Chung Wang | Sheet metal assembly and method to reduce weight |
| JP2007090397A (en) * | 2005-09-29 | 2007-04-12 | Jfe Steel Kk | Lap fillet welding method |
| CN101734557A (en) * | 2009-11-18 | 2010-06-16 | 中冶天工建设有限公司 | Process for manufacturing super-large I-shaped crane beam |
| CN101745718A (en) * | 2009-12-17 | 2010-06-23 | 浙江东海岸船业有限公司 | Method for welding thin steel plate |
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2010
- 2010-09-29 CN CN201010296382.9A patent/CN102430866B/en not_active Expired - Fee Related
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| US20040197135A1 (en) * | 2003-04-07 | 2004-10-07 | Pei-Chung Wang | Sheet metal assembly and method to reduce weight |
| JP2007090397A (en) * | 2005-09-29 | 2007-04-12 | Jfe Steel Kk | Lap fillet welding method |
| CN101734557A (en) * | 2009-11-18 | 2010-06-16 | 中冶天工建设有限公司 | Process for manufacturing super-large I-shaped crane beam |
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| 刘原: "大型吊车梁焊接变形的控制", 《石油工程建设》, vol. 27, no. 2, 30 April 2001 (2001-04-30) * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768691A (en) * | 2012-11-13 | 2015-07-08 | 卡特彼勒Sarl公司 | Welded structure and machinery |
| EP2921248A4 (en) * | 2012-11-13 | 2016-08-24 | Caterpillar Sarl | Welded structure and machinery |
| CN104768691B (en) * | 2012-11-13 | 2017-05-24 | 卡特彼勒Sarl公司 | Welded structure and machinery |
| US10047499B2 (en) | 2012-11-13 | 2018-08-14 | Caterpillar Sarl | Welded structure and machinery |
| CN104043892A (en) * | 2014-06-27 | 2014-09-17 | 中航虹波风电设备有限公司 | Technology for supporting barrel to be circular |
| CN104588921A (en) * | 2014-11-12 | 2015-05-06 | 南通中远川崎船舶工程有限公司 | Deformation prevention structure for thin plate welding and process method |
| CN104588921B (en) * | 2014-11-12 | 2016-08-24 | 南通中远川崎船舶工程有限公司 | A kind of plate sheet welding anti-deforming structure and process |
| CN109262154A (en) * | 2018-09-28 | 2019-01-25 | 武汉船用机械有限责任公司 | A kind of production method of scattered cable saddle |
| CN109848636A (en) * | 2019-03-22 | 2019-06-07 | 宝胜系统集成科技股份有限公司 | A kind of welding method of built up column |
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| Publication number | Publication date |
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| CN102430866B (en) | 2014-12-10 |
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