CN105414891A - Welding method for main beam of crane - Google Patents
Welding method for main beam of crane Download PDFInfo
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- CN105414891A CN105414891A CN201510839731.XA CN201510839731A CN105414891A CN 105414891 A CN105414891 A CN 105414891A CN 201510839731 A CN201510839731 A CN 201510839731A CN 105414891 A CN105414891 A CN 105414891A
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- welding method
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- crane girder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Arc Welding In General (AREA)
Abstract
The invention relates to a welding method for a main beam of a crane. The welding method includes the following steps that firstly, a quadratic curve and a quartic curve are combined for determining the prefabricated camber of the main beam; secondly, an uncoiled steel plate is blanked according to the length of the main beam, numerical control programming double-edge double guns are used for cutting the camber at the same time, and web and angle iron blanking is completed; thirdly, a combined mechanical groove machine is used for machining a web groove; fourthly, a wing-shaped folding and unfolding type platform device is used for supporting the steel plate needing to be grooved; and fifthly, a single face welding and double face forming technology is used for completing the refining procedure of welding of the main beam. The welding method has the beneficial effects that the technology is simple, deformation is prevented, cost is low, effects are good, the welding process is simple, the performance of the welded main beam is stable, and safety and reliability are achieved.
Description
Technical field
The invention belongs to crane technical field, be specifically related to a kind of crane girder welding method.
Background technology
China as crane production and use big country, a certain distance is there is with developed country for the design of large lifting equipment and working ability, traditional crane girder is wider, the epiplastron of girder is adopt inside and outside both sides back chipping through welding with welding of cover plate, need workman to enter inside girder to operate, and European girder its there are the following problems that width of main beam is narrow, operating personnel cannot enter girder interior construction; Girder web plate and cover plate require full penetration; Girder and crane span structure require that geometric parameter precision is high, and main beam deformation is serious; For solving the problem, therefore need a kind of crane girder welding method.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and the crane girder welding method that a kind of technique is simple, anti-deformation, cost are low, effective is provided.
The object of the present invention is achieved like this: a kind of crane girder welding method, and it comprises the steps: that step 1 adopts conic section and biquadratic curve combination to determine the prefabricated camber of girder; The blanking of girder length pressed by step 2 uncoiling steel plate, adopts the bilateral rush-harvesting and rush-planting of numerical control programming to cut camber simultaneously, and completes web, angle-steel blanking; Step 3 adopts wing fold-playing stage apparatus to hold up and needs bevelled steel plate; Step 4 adopts combined mechanical beveling machine to process web groove; Step 5 adopts one side welding with back formation technique to complete the refinement of the welding of girder.
The blanking of described step 2 and step 3 median ventral plate adopts numerical control plasma cutting machine blanking, and the camber of described step 2 and step 3 median ventral plate is cut by numerical control plasma cutting machine rush-harvesting and rush-planting simultaneously.
The transporting and hoisting of described step 2 and step 3 median ventral plate adopts distortion-free bull magnetic hoisting.
Main Girder Welding in described step 5 is carried out in grouping machine, and the Main Girder Welding in described step 5 is automatic vehicle carbon dioxide gas arc welding.
The thickness of the web in described step 2 is between 0.05mm to 2mm.
The thickness of the web in described step 2 is between 2mm to 4mm.
The thickness of the web in described step 2 is between 4mm to 6mm.
The thickness of the web in described step 2 is between 6mm to 10mm.
The thickness of the web in described step 2 is greater than 10mm.
Described bull magnetic hoisting at least includes four magnetic force heads.
Described wing fold-playing stage apparatus, it comprises sleeper beam A, sleeper beam B, described sleeper beam A, sleeper beam B are symmetrical arranged, be disposed with support beam A, brace summer B, brace summer C, brace summer D between described sleeper beam A, sleeper beam B from left to right, described sleeper beam A, the bottom face of sleeper beam B are disposed with crossbeam A, crossbeam B, crossbeam C, crossbeam D from left to right; The bottom face of described crossbeam A is provided with supporting leg A, and the bottom face of described crossbeam B is provided with legs B, and the bottom face of described crossbeam C is provided with supporting leg C, and the bottom face of described crossbeam D is provided with supporting leg D; Described support beam A, brace summer B, brace summer C, brace summer D are evenly arranged, and described crossbeam A, crossbeam B, crossbeam C, crossbeam D are evenly arranged.
Beneficial effect of the present invention: the present invention adopts conic section successively and the prefabricated camber of girder is determined in biquadratic curve combination, the bilateral rush-harvesting and rush-planting of control-register journey cuts web camber simultaneously, wing fold-playing stage apparatus holds up needs bevelled steel plate, combined mechanical beveling machine processing web groove to constitute a kind of crane girder welding method, has the advantage that technique is simple, anti-deformation, cost are low, effective; The present invention adopts web prefabricated camber Numerical control cutting, the technology of box beam one side welding with back formation, ensures girder web plate and bridge weld seam penetration, ensures weld strength and the welding quality of girder, thus solves the process difficulties of European crane girder welding; Total, the present invention has the advantage that technique is simple, anti-deformation, cost are low, effective.
Accompanying drawing explanation
Fig. 1 is the front view of the wing fold-playing stage apparatus in a kind of crane girder of the present invention welding method.
Fig. 2 is the top view of the wing fold-playing stage apparatus in of the present invention a kind of crane girder welding method.
In figure: 1, supporting leg A2, crossbeam A3, support beam A 4, crossbeam B5, brace summer B6, crossbeam C7, brace summer C8, crossbeam D9, brace summer D10, supporting leg D11, supporting leg C12, legs B 13, sleeper beam A14, sleeper beam B.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment 1
A kind of crane girder welding method, it comprises the steps: that step 1 adopts conic section and biquadratic curve combination to determine the prefabricated camber of girder; The blanking of girder length pressed by step 2 uncoiling steel plate, adopts the bilateral rush-harvesting and rush-planting of numerical control programming to cut camber simultaneously, and completes web, angle-steel blanking; Step 3 adopts wing fold-playing stage apparatus to hold up and needs bevelled steel plate; Step 4 adopts combined mechanical beveling machine to process web groove; Step 5 adopts one side welding with back formation technique to complete the refinement of the welding of girder.
As shown in Figure 1 and Figure 2, wing fold-playing stage apparatus in a kind of crane girder welding method, it comprises sleeper beam A13, sleeper beam B14, described sleeper beam A13, sleeper beam B14 are symmetrical arranged, be disposed with support beam A 3, brace summer B5, brace summer C7, brace summer D9 between described sleeper beam A13, sleeper beam B14 from left to right, described sleeper beam A13, the bottom face of sleeper beam B14 are disposed with crossbeam A2, crossbeam B4, crossbeam C6, crossbeam D8 from left to right; The bottom face of described crossbeam A2 is provided with supporting leg A1, and the bottom face of described crossbeam B4 is provided with legs B 12, and the bottom face of described crossbeam C6 is provided with supporting leg C11, and the bottom face of described crossbeam D8 is provided with supporting leg D10; Described support beam A 3, brace summer B5, brace summer C7, brace summer D9 are evenly arranged, and described crossbeam A2, crossbeam B4, crossbeam C6, crossbeam D8 are evenly arranged.
The present invention in use, first carries out Main Girder Welding according to step 1-5, adopts conic section and biquadratic curve combination to determine the prefabricated camber of girder, has financial cost, advantage that precision is high; The bilateral rush-harvesting and rush-planting of control-register journey cuts web camber simultaneously, have automatically, saving working hour, advantage that efficiency is high; Wing fold-playing stage apparatus holds up needs bevelled steel plate, and combined mechanical beveling machine processing web groove, has and prevent distortion, high, the fireballing advantage of working (machining) efficiency; Total, the present invention has the advantage that technique is simple, anti-deformation, cost are low, effective.
Embodiment 2
A kind of crane girder welding method, it comprises the steps: that step 1 adopts conic section and biquadratic curve combination to determine the prefabricated camber of girder, the blanking of girder length pressed by step 2 uncoiling steel plate, adopts the bilateral rush-harvesting and rush-planting of numerical control programming to cut camber simultaneously, and completes web, angle-steel blanking, step 3 adopts wing fold-playing stage apparatus to hold up and needs bevelled steel plate, step 4 adopts combined mechanical beveling machine to process web groove, step 5 adopts one side welding with back formation technique to complete the refinement of the welding of girder, the blanking of described step 2 and step 3 median ventral plate adopts numerical control plasma cutting machine blanking, the camber of described step 2 and step 3 median ventral plate is cut by numerical control plasma cutting machine rush-harvesting and rush-planting simultaneously, the transporting and hoisting of described step 2 and step 3 median ventral plate adopts distortion-free bull magnetic hoisting, Main Girder Welding in described step 5 is carried out in grouping machine, automatic vehicle carbon dioxide gas arc welding is welded as in described step 5, described bull magnetic hoisting at least includes four magnetic force heads.
As shown in Figure 1 and Figure 2, wing fold-playing stage apparatus in a kind of crane girder welding method, it comprises sleeper beam A13, sleeper beam B14, described sleeper beam A13, sleeper beam B14 are symmetrical arranged, be disposed with support beam A 3, brace summer B5, brace summer C7, brace summer D9 between described sleeper beam A13, sleeper beam B14 from left to right, described sleeper beam A13, the bottom face of sleeper beam B14 are disposed with crossbeam A2, crossbeam B4, crossbeam C6, crossbeam D8 from left to right; The bottom face of described crossbeam A2 is provided with supporting leg A1, and the bottom face of described crossbeam B4 is provided with legs B 12, and the bottom face of described crossbeam C6 is provided with supporting leg C11, and the bottom face of described crossbeam D8 is provided with supporting leg D10; Described support beam A 3, brace summer B5, brace summer C7, brace summer D9 are evenly arranged, and described crossbeam A2, crossbeam B4, crossbeam C6, crossbeam D8 are evenly arranged.
The present invention in use, first carries out Main Girder Welding according to step 1-5, adopts conic section and biquadratic curve combination to determine the prefabricated camber of girder, has financial cost, advantage that precision is high; The bilateral rush-harvesting and rush-planting of control-register journey cuts web camber simultaneously, have automatically, saving working hour, advantage that efficiency is high; Wing fold-playing stage apparatus holds up needs bevelled steel plate, and combined mechanical beveling machine processing web groove, has and prevent distortion, high, the fireballing advantage of working (machining) efficiency; The blanking of step 2 of the present invention and step 3 median ventral plate adopts numerical control plasma cutting machine blanking, the camber of web is cut by numerical control plasma cutting machine rush-harvesting and rush-planting simultaneously, the transporting and hoisting of web adopts distortion-free bull magnetic hoisting, bull magnetic hoisting at least includes four magnetic force heads, has the advantage that efficiency is high, precision is high, camber distortion is little, transport is steadily controlled; Main Girder Welding in step 5 of the present invention is carried out in grouping machine, and the Main Girder Welding in step 5 is automatic vehicle carbon dioxide gas arc welding, has easy to operate, that cost is low, effective advantage; Total, the present invention has the advantage that technique is simple, anti-deformation, cost are low, effective.
Claims (10)
1. a crane girder welding method, is characterized in that, it comprises the steps:
Step 1 adopts conic section and biquadratic curve combination to determine the prefabricated camber of girder;
The blanking of girder length pressed by step 2 uncoiling steel plate, adopts the bilateral rush-harvesting and rush-planting of numerical control programming to cut camber simultaneously, and completes web, angle-steel blanking;
Step 3 adopts wing fold-playing stage apparatus to hold up and needs bevelled steel plate;
Step 4 adopts combined mechanical beveling machine to process web groove;
Step 5 adopts one side welding with back formation technique to complete the refinement of the welding of girder.
2. a kind of crane girder welding method according to claim 1, it is characterized in that: the blanking of described step 2 and step 3 median ventral plate adopts numerical control plasma cutting machine blanking, and the camber of described step 2 and step 3 median ventral plate is cut by numerical control plasma cutting machine rush-harvesting and rush-planting simultaneously.
3. a kind of crane girder welding method according to claim 1, is characterized in that: the transporting and hoisting of described step 2 and step 3 median ventral plate adopts distortion-free bull magnetic hoisting.
4. a kind of crane girder welding method according to claim 1, is characterized in that: the Main Girder Welding in described step 5 is carried out in grouping machine, and the Main Girder Welding in described step 5 is automatic vehicle carbon dioxide gas arc welding.
5. a kind of crane girder welding method according to claim 1, is characterized in that: the thickness of the web in described step 2 is between 0.05mm to 2mm.
6. a kind of crane girder welding method according to claim 1, is characterized in that: the thickness of the web in described step 2 is between 2mm to 4mm.
7. a kind of crane girder welding method according to claim 1, is characterized in that: the thickness of the web in described step 2 is between 4mm to 6mm.
8. a kind of crane girder welding method according to claim 1, is characterized in that: the thickness of the web in described step 2 is between 6mm to 10mm.
9. a kind of crane girder welding method according to claim 1, is characterized in that: the thickness of the web in described step 2 is greater than 10mm.
10. a kind of crane girder welding method according to claim 3, is characterized in that: described bull magnetic hoisting at least includes four magnetic force heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510839731.XA CN105414891A (en) | 2015-11-27 | 2015-11-27 | Welding method for main beam of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510839731.XA CN105414891A (en) | 2015-11-27 | 2015-11-27 | Welding method for main beam of crane |
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| Publication Number | Publication Date |
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| CN105414891A true CN105414891A (en) | 2016-03-23 |
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| CN201510839731.XA Pending CN105414891A (en) | 2015-11-27 | 2015-11-27 | Welding method for main beam of crane |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489939A (en) * | 2011-11-24 | 2012-06-13 | 吕传水 | Production process of main beam of crane |
| CN103481026A (en) * | 2013-08-30 | 2014-01-01 | 河南卫华重型机械股份有限公司 | Girder machining method and girder machining device for crane and crane span collecting-mounting method |
| CN103626031A (en) * | 2012-08-23 | 2014-03-12 | 上海宝松重型机械工程（集团）有限公司 | Method for correcting prefabricated camber of crane main beam |
| CN104400351A (en) * | 2014-11-10 | 2015-03-11 | 安徽威萨重工机械有限公司 | Production technology of box girder of crane |
-
2015
- 2015-11-27 CN CN201510839731.XA patent/CN105414891A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489939A (en) * | 2011-11-24 | 2012-06-13 | 吕传水 | Production process of main beam of crane |
| CN103626031A (en) * | 2012-08-23 | 2014-03-12 | 上海宝松重型机械工程（集团）有限公司 | Method for correcting prefabricated camber of crane main beam |
| CN103481026A (en) * | 2013-08-30 | 2014-01-01 | 河南卫华重型机械股份有限公司 | Girder machining method and girder machining device for crane and crane span collecting-mounting method |
| CN104400351A (en) * | 2014-11-10 | 2015-03-11 | 安徽威萨重工机械有限公司 | Production technology of box girder of crane |
Non-Patent Citations (1)
| Title |
|---|
| 谢雨田,严忠华，熊震宇: "双梁桥式起重机主梁焊接工艺", 《电焊机》 * |
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Application publication date: 20160323 |
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