CN114535846B - Steel box girder welding tool and welding process thereof - Google Patents
Steel box girder welding tool and welding process thereof Download PDFInfo
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- CN114535846B CN114535846B CN202210096841.1A CN202210096841A CN114535846B CN 114535846 B CN114535846 B CN 114535846B CN 202210096841 A CN202210096841 A CN 202210096841A CN 114535846 B CN114535846 B CN 114535846B
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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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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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
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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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
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Quality & Reliability (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the technical field of steel box girders, in particular to a steel box girder welding tool and a welding process thereof. The technical scheme mainly aims at solving the problems that the existing means cannot set a tool for stabilizing a welding position with respect to the welding position, the welding accuracy and stability are not high, the post reworking is caused, and the like, and the following technical scheme is provided: a steel box girder welding process comprises the following welding steps: step one: treating raw materials; step two: fixing a tool; step three: welding operation; step four: checking welding spots; step five: and (5) repairing the defect. The welding process disclosed by the invention is comprehensive, the welding points are detected for a plurality of times, the qualification rate of welding construction is improved, the use risk is reduced, the welding fixture is fixedly clamped by using connecting beams with different thicknesses and heights, the use flexibility and the safety are high, the generated flue gas is discharged after being recycled, the construction environment air quality of the welder is effectively improved, and the welding fixture is suitable for popularization and application and is mainly applied to firmly clamping welding among all beams of a steel box girder.
Description
Technical Field
The invention relates to the technical field of steel box girders, in particular to a steel box girder welding tool and a welding process thereof.
Background
Steel box girders are generally used for bridges with a large span, and are called steel box girders because they are shaped like a box. The steel box girder is generally formed by connecting a top plate, a bottom plate, a web plate, a diaphragm plate, a longitudinal diaphragm plate, stiffening ribs and the like in a full welding mode. Wherein the top plate is an orthotropic bridge deck plate consisting of cover plates and longitudinal stiffening ribs. The welding process used in the construction welding process of the steel box girder is not ideal in welding precision and welding spot quality, most of the welding process is one-time flaw detection, and flaw detection and ultrasonic detection can not be performed in time after the sectional type welding stage is finished, so that the conditions of welding omission, error welding and the like appear after the steel box girder is welded, the finding difficulty is higher, the repairing difficulty is also higher, the welding stress between the whole steel materials of the steel box girder can not be eliminated, the stability of the whole welding of the steel box girder is reduced, and the welding hidden trouble of the steel box girder is increased; the patent CN113500273A proposes a steel box girder construction welding process, in the scheme, the whole quality of a basic steel material is improved by accurately selecting materials, meanwhile, the welding is carried out in a sectional welding mode of a main frame and an auxiliary frame, and the flaw detection is carried out in time after each stage is finished, so that the welding quality of each stage is improved; forming equilateral triangles, isosceles triangles and common triangles by three positioning horse plates according to the position conditions of the steel on site, and enhancing the positioning and fixing effects among all the steel plates according to the stability of the triangles; the welding mode requirements of different positions are met, the welding effect of the main frame and the auxiliary frame is enhanced to the greatest extent, and the welding precision and quality between the steel plates are improved; however, in actual welding, the difficulty of moving is high due to the fact that the volume and the weight between the beams are high, if the stability of holding between the two connected beams is poor, the welding linearity is changed, reworking treatment is required, and even larger potential safety hazards are caused, and the whole construction engineering is delayed.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a welding position cannot be set to be stable in terms of a welding position, welding accuracy and stability are low, post reworking is caused, and the like, and provides a steel box girder welding tool and a welding process thereof.
The technical scheme of the invention is as follows: a steel box girder welding process comprises the following welding steps:
step one: and (3) raw material treatment: preprocessing steel materials and steel plate raw materials used for the steel box girder, cleaning greasy dirt on the outer surface of the steel materials, polishing rust residues, cleaning, finely polishing welding parts, and ensuring stable tightness of raw material welding connection;
step two: fixing a tool: the relative positions of the welded secondary beams and the main beams are determined through a fixed tool, the positions of the secondary beams are adjusted according to the welding positions, and the secondary beams are placed and abutted through the tool, so that the manual supporting workload is reduced;
step three: welding operation: welding the main beam and the secondary beam by adopting a plurality of welding modes such as carbon dioxide full-automatic shielded welding, submerged arc welding, butt welding, fillet welding and the like, and absorbing the smoke generated in the welding process through a smoke absorbing mechanism;
step four: welding spot inspection: flaw detection is carried out on the welding joint through a flaw detector, the detection is divided into primary detection, secondary detection and tertiary detection, and unqualified welding spot positions are determined to be marked;
step five: defect repair: and (3) combining the welding points marked in the step (III), cleaning the welding points by welding personnel, re-welding the welding points, carrying out three flaw detection on the marked welding points, and carrying out the next welding operation after the marked welding points are completely qualified.
The invention further provides a steel box girder welding tool, which comprises a connecting main girder and a connecting secondary girder, wherein a clamping mechanism is arranged at the bottom of the connecting secondary girder, the clamping mechanism comprises a base, the top of the base is connected with a guide rail, a movable seat is movably arranged on the guide rail, one side of the top of the movable seat is connected with a clamping plate I, one side of the clamping plate I is slidably provided with an adjusting mechanism, the adjusting mechanism comprises a clamping plate II, one side of the clamping plate II is slidably connected with a clamping plate III, one side of the clamping plate III is connected with a lifting mechanism, a smoke absorption box arranged on one side of the clamping plate II is arranged below the lifting mechanism, the other side of the clamping plate II is fixedly connected with a connecting rod, one side of the connecting rod is provided with a push rod motor, the smoke absorption box comprises a fan, the input end of the fan is connected with an air inlet pipe, one side of the air inlet pipe is connected with an air inlet filter plate, the output end of the fan is connected with an exhaust pipe, and one side of the exhaust pipe is connected with an air outlet filter plate.
Preferably, the moving seat is provided with a moving hole along the length direction thereof, the bottom of the second clamping plate is connected with a moving block, and the moving block is in sliding connection with the inner wall of the moving hole.
Preferably, threaded holes are formed in two sides of the moving hole, threaded bolts are rotatably mounted in the threaded holes, a plurality of threaded holes are formed in the base along the length direction of the base in an array mode, and the outer ring of the bottom of each threaded bolt is mounted in an adaptive mode with the threaded holes.
Preferably, the bottom plate wall of the movable seat is provided with a guide groove, the guide groove is in sliding connection with the inner wall of the guide groove, and the push rod motor is detachably connected with the outer wall of one side of the movable seat.
Preferably, the lifting mechanism comprises a connecting block, one end of the connecting block is fixedly connected with one side of the third clamping plate, the other end of the connecting block is connected with a limiting rod, a lifting hole is formed in the second clamping plate along the height direction of the second clamping plate, and the connecting block penetrates through the lifting hole and is in sliding connection with the inner wall of the lifting hole.
Preferably, the external diameter of the limiting rod is larger than the width of the lifting hole, a sliding cavity is formed in the inner wall of the limiting rod, a compression spring is connected in the sliding cavity, the other end of the compression spring is connected with a sliding rod, and the sliding rod is in sliding connection with the inner wall of the sliding cavity.
Preferably, one side of the lifting hole is connected with a plurality of clamping frames along the height direction of the lifting hole in an array mode, the sliding rod is of a rectangular structure, the clamping frames are of an L-shaped structure, and the outer diameter of the sliding rod is matched with the inner wall of one side of each clamping frame.
Preferably, one end of the sliding rod far away from the sliding cavity is fixedly connected with a pull ring.
Preferably, the air inlet filter plate is detachably arranged on two side box walls of the flue gas absorption box, the air outlet filter plate is detachably connected on one side of the front face of the flue gas absorption box, and active carbon particles are filled in the air inlet filter plate and the air outlet filter plate.
Compared with the prior art, the invention has the following beneficial technical effects:
1. according to the invention, by providing a welding tool at the welding joint, the position stability between two welded beams is improved, the flaw detection is performed on the welded point, and the flaw detection is performed three times again after repairing and welding the defective point, so that the welding tightness of the steel box girder connecting welding point is improved, and the welding quality is improved;
2. the welding fixture provided by the invention has the advantages that the whole use position of the clamping mechanism is adjusted by arranging the movable seat and the guide rail, the distance between the clamping plates I and II is adjusted by arranging the push rod motor, the welding fixture is suitable for different welding clamping requirements, the use height of the clamping plates III is adjusted according to different heights of the plates which are clamped firmly as required by arranging the lifting mechanism and the clamping plates III, the contact surface for clamping the plates is improved, so that the stability of clamping and fixing of the welding fixture is improved, the welding fixture is more flexible and convenient to use, and meanwhile, the height adjustment of the limiting rod and the slide rod is convenient and quick, and the use flexibility is high;
3. the invention provides the smoke absorption box which is arranged for absorbing and treating the smoke generated by welding and discharging the smoke during welding processing operation, so that the safety of smoke discharge is improved, the generation of harmful substances is reduced, and the smoke absorption box is beneficial to environmental protection and protecting the physical safety of welding workers;
4. in summary, the welding process disclosed by the invention is comprehensive, the welding points are detected for a plurality of times, the qualification rate of welding construction is improved, the use risk is reduced, the welding fixture is fixedly clamped by using connecting beams with different thicknesses and heights, the use flexibility and the safety are high, the generated flue gas is recycled and discharged, the air quality of the construction environment of the welding fixture is effectively improved, and the welding process is suitable for popularization and use.
Drawings
FIG. 1 is a front view of a steel box girder welding tool;
FIG. 2 is a schematic view of the movable base of FIG. 1;
FIG. 3 is a schematic view of the third cleat of FIG. 2;
FIG. 4 is a schematic cross-sectional elevational view of the stop lever of FIG. 3;
FIG. 5 is a schematic cross-sectional top view of the smoke absorbing cartridge of FIG. 1;
fig. 6 is a flow chart of a steel box girder welding process.
Reference numerals: 1. connecting a main beam; 2. connecting secondary beams; 3. a clamping mechanism; 301. a base; 302. a guide rail; 303. a movable seat; 304. a guide groove; 305. a threaded bolt; 306. a moving hole; 307. a clamping plate I; 4. an adjusting mechanism; 401. a clamping plate II; 402. a clamping plate III; 403. a connecting rod; 404. a push rod motor; 5. a smoke absorption box; 501. an air inlet filter plate; 502. an air outlet filter plate; 503. a blower; 504. an air inlet pipe; 505. an exhaust pipe; 6. a lifting mechanism; 601. a connecting block; 602. a limit rod; 603. a slide bar; 604. a clamping frame; 605. lifting holes; 606. compressing the spring.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.
Example 1
As shown in fig. 6, the welding process of the steel box girder provided by the invention comprises the following welding steps:
step one: and (3) raw material treatment: preprocessing steel materials and steel plate raw materials used for the steel box girder, cleaning greasy dirt on the outer surface of the steel materials, polishing rust residues, cleaning, finely polishing welding parts, and ensuring stable tightness of raw material welding connection;
step two: fixing a tool: the relative positions of the welded secondary beams and the main beams are determined through a fixed tool, the positions of the secondary beams are adjusted according to the welding positions, and the secondary beams are placed and abutted through the tool, so that the manual supporting workload is reduced;
step three: welding operation: welding the main beam and the secondary beam by adopting a plurality of welding modes such as carbon dioxide full-automatic shielded welding, submerged arc welding, butt welding, fillet welding and the like, and absorbing the smoke generated in the welding process through a smoke absorbing mechanism;
step four: welding spot inspection: flaw detection is carried out on the welding joint through a flaw detector, the detection is divided into primary detection, secondary detection and tertiary detection, and unqualified welding spot positions are determined to be marked;
step five: defect repair: and (3) combining the welding points marked in the step (III), cleaning the welding points by welding personnel, re-welding the welding points, carrying out three flaw detection on the marked welding points, and carrying out the next welding operation after the marked welding points are completely qualified.
In the embodiment, steel is subjected to refined treatment during raw material treatment, so that the connectivity of the steel during welding is improved, the position stability between two welded beams is improved by arranging a welding tool at a welding joint, flaw detection is performed on a welded point, and flaw detection is performed three times again after repairing and welding the defective point again, so that the welding tightness of a steel box girder connecting welding point is improved, the welding quality is improved, and the engineering progress of reworking delay is reduced.
Example two
As shown in fig. 1-5, the welding fixture for steel box girders provided by the invention further comprises a connecting girder 1 and a connecting secondary girder 2, wherein a clamping mechanism 3 is arranged at the bottom of the connecting secondary girder 2, the clamping mechanism 3 comprises a base 301, a guide rail 302 is connected to the top of the base 301, a movable seat 303 is movably arranged on the guide rail 302, a guide groove 304 is arranged on the bottom plate wall of the movable seat 303, the guide rail 302 is in sliding connection with the inner wall of the guide groove 304, a push rod motor 404 is detachably connected with the outer wall of one side of the movable seat 303 through bolts, a clamping plate I307 is connected to one side of the top of the movable seat 303, an adjusting mechanism 4 is slidably arranged on one side of the clamping plate I307, the adjusting mechanism 4 comprises a clamping plate II 401, a movable hole 306 is arranged on the movable seat 303 along the length direction of the clamping plate II 401, a movable block is connected to the bottom of the clamping plate II 401, the movable block is in sliding connection with the inner wall of the movable hole 306 and is used for providing guiding guide for the clamping plate II to the approaching movement of the clamping plate I307, threaded holes are formed in two sides of the moving hole 306, threaded bolts 305 are rotatably arranged in the threaded holes, a plurality of threaded holes are formed in the base 301 along the length direction of the base 301 in an array mode, the outer ring of the bottom of the threaded bolts 305 is installed in an adaptive mode with the threaded holes, the arrangement of the threaded grooves is used for adjusting the relative installation position between the moving seat 303 and the base 301 through rotation and disassembly of the threaded bolts 305, a plurality of moving seats 303 can be installed on the base 301 and used for fixing a plurality of connecting secondary beams 2 through the moving seats 303 at the same time, a clamping plate III 402 is slidingly connected to one side of a clamping plate II 401, a lifting mechanism 6 is connected to one side of the clamping plate III 402, the lifting mechanism 6 comprises a connecting block 601, one end of the connecting block 601 is fixedly connected with one side of the clamping plate III 402, the other end of the connecting block 601 is connected with a limiting rod 602, a lifting hole 605 is formed in the clamping plate II 401 along the height direction of the clamping plate II, the external diameter of gag lever post 602 is greater than the width of lifter 605, the slippage when avoiding the slip of gag lever post 602, the sliding chamber has been seted up to the inner wall of gag lever post 602, compression spring 606 has been connected with in the sliding chamber, the other end of compression spring 606 is connected with slide bar 603, slide bar 603 and the inner wall sliding connection in sliding chamber, connecting block 601 runs through lifter 605 and with the inner wall sliding connection in lifter 605, advance the inside in sliding chamber with slide bar 603 when lifting the height to gag lever post 602, one side of lifter 605 is connected with a plurality of screens frame 604 along its direction of height array, slide bar 603 is rectangular structure, screens frame 604 is "L" font structure, and the external diameter of slide bar 603 and one side inner wall adaptation of screens frame 604, the one end fixedly connected with pull ring of slide bar 603 in keeping away from the sliding chamber, the connecting block 601 slides the height of splint three 402 along lifter 605, the below of lifter 6 is equipped with the flue gas absorption box 5 of installing in splint two 401 sides, the opposite side plate wall fixedly connected with connecting rod 403 of splint two 401, push rod 404 is installed to one side of connecting rod 403, flue gas absorption box 5 includes the fan 503, the fan 503 is connected with a plurality of screens frame 604, the output pipe 502 of fan 503 is connected with the air inlet pipe 502, the air inlet pipe 502 is connected with the air inlet pipe 505, the air outlet pipe 502 is connected with the air inlet pipe 505.
In this embodiment, one or more movable bases 303 are connected with a threaded groove on a base 301 through a threaded bolt 305, so as to determine the use position of the movable bases 303 on the base 301, when the connecting main beam 1 and the connecting secondary beam 2 are required to be welded, the vertical position of the connecting main beam 1 and the connecting secondary beam 2 is fixed, firstly, the height of the connecting secondary beam 2 is judged, if the highest position of the clamping rod second 401 is not half of the height of the connecting secondary beam 2, the lifting mechanism 6 is pushed to move, the sliding rod 603 is pushed, the compression spring 606 is compressed, the sliding rod 603 is retracted into the sliding cavity, at the moment, the sliding rod 603 is separated from a clamping frame 604 on one side, the limiting rod 602 is pushed, the connecting block 601 is pushed along the height direction of the lifting hole 605, the contact area of the clamping plate third 402 at one end of the connecting block 601 is increased, after adjustment is completed, the outer length of the locating rod 602 is increased under the rebound action of the compression spring 606, the inner side of the clamping rod 604 is blocked by the clamping frame 604, the position of the motor 602 is blocked, and at the same time, the position of the clamping rod second position of the motor 602 is fixed by the clamping rod second position of the clamping rod second clamping rod 2 is not blocked, and the clamping rod 2 is not clamped by the clamping rod 2 is positioned at the same time, and the position of the clamping rod 2 is not matched with the clamping rod 2, and the clamping rod 2 is positioned at the end of the clamping rod 2 is fixed, and the clamping rod 2 is positioned at the end, and the position of the clamping rod 2 is opposite to the clamping position 2 is fixed, and the clamping position 2 is opposite to the clamping position, and the clamping position 2 is stable.
Example III
As shown in fig. 1-5, the welding tool for steel box girders and the welding process thereof provided by the invention, compared with the second embodiment, the welding tool further comprises a connecting main girder 1 and a connecting secondary girder 2, the bottom of the connecting secondary girder 2 is provided with a clamping mechanism 3, the clamping mechanism 3 comprises a base 301, the top of the base 301 is connected with a guide rail 302, a movable seat 303 is movably mounted on the guide rail 302, one side of the top of the movable seat 303 is connected with a clamping plate I307, one side of the clamping plate I307 is slidably provided with an adjusting mechanism 4, the adjusting mechanism 4 comprises a clamping plate II 401, one side of the clamping plate II 401 is slidably connected with a clamping plate III 402, one side of the clamping plate III 402 is connected with a lifting mechanism 6, the lower part of the lifting mechanism 6 is provided with a smoke absorption box 5 mounted on one side of the clamping plate II 401, the other side of the clamping plate II 401 is fixedly connected with a connecting rod 403, one side of the connecting rod 403 is provided with a push rod motor 404, the smoke absorption box 5 comprises a fan 503, the input end of the fan 503 is connected with an air inlet pipe 504, one side of the air inlet filter plate 501 is connected with an exhaust pipe 505, one side of the air inlet pipe 505 is connected with an exhaust filter plate 505, one side of the pipe 505 is connected with an exhaust filter plate 502, one side of the pipe 505 is connected with the exhaust filter plate 502, one side of the exhaust plate is connected with the exhaust plate 502, and the exhaust plate 502 is completely and is completely clean by the active, and the exhaust material is filled in the front and is discharged by the front side of the filter box 502.
In this embodiment, when the welding operation is performed, the air is sucked through the fan 503, the air is sucked from the air inlet filter plate 501, the air outlet filter plate 502 is discharged, and meanwhile, harmful substances in the flue gas are filtered and absorbed through the air inlet filter plate 501 and the air outlet filter plate 502, so that the neatness of the discharged gas is improved.
The above-described embodiments are merely a few preferred embodiments of the present invention, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present invention and the related teachings of the above-described embodiments.
Claims (6)
1. The utility model provides a steel box girder welding frock, its characterized in that, including connecting girder (1) and connecting secondary beam (2), the bottom of connecting secondary beam (2) is provided with fixture (3), fixture (3) are including base (301), the top of base (301) is connected with guide rail (302), movable mounting has on guide rail (302) and removes seat (303), top one side of removing seat (303) is connected with splint one (307), one side slidable mounting of splint one (307) has guiding mechanism (4), guiding mechanism (4) include splint two (401), one side slidable connection of splint two (401) has splint three (402), one side of splint three (402) is connected with elevating system (6), the below of elevating system (6) is equipped with and installs flue gas absorption box (5) in splint two (401) one side, the opposite side plate wall fixedly connected with connecting rod (403) of splint two (401), one side push rod of connecting rod (403) installs motor (404), absorption box (5) include splint two (401), one side slidable mounting has splint three (402) of splint, one side of splint three (402) is connected with splint (6) is connected with elevating system (6) respectively, one side of the air inlet pipe (503), the output end of the fan (503) is connected with an exhaust pipe (505), and one side of the exhaust pipe (505) is connected with an air outlet filter plate (502);
the bottom plate wall of the movable seat (303) is provided with a guide groove (304), the guide rail (302) is in sliding connection with the inner wall of the guide groove (304), and the push rod motor (404) is detachably connected with the outer wall of one side of the movable seat (303);
the lifting mechanism (6) comprises a connecting block (601), one end of the connecting block (601) is fixedly connected with one side of a third clamping plate (402), the other end of the connecting block (601) is connected with a limiting rod (602), a lifting hole (605) is formed in the second clamping plate (401) along the height direction of the second clamping plate, and the connecting block (601) penetrates through the lifting hole (605) and is in sliding connection with the inner wall of the lifting hole (605); the outer diameter of the limiting rod (602) is larger than the width of the lifting hole (605), a sliding cavity is formed in the inner wall of the limiting rod (602), a compression spring (606) is connected in the sliding cavity, the other end of the compression spring (606) is connected with a sliding rod (603), and the sliding rod (603) is connected with the inner wall of the sliding cavity in a sliding mode; one side of lifting hole (605) is connected with a plurality of screens shelves (604) along its direction of height array, slide bar (603) are rectangular structure, screens shelves (604) are "L" font structure, and the external diameter of slide bar (603) and one side inner wall adaptation of screens shelves (604).
2. The steel box girder welding tool according to claim 1, wherein the moving seat (303) is provided with a moving hole (306) along the length direction thereof, the bottom of the clamping plate II (401) is connected with a moving block, and the moving block is in sliding connection with the inner wall of the moving hole (306).
3. The steel box girder welding tool according to claim 2, wherein threaded holes are formed in two sides of the moving hole (306), threaded bolts (305) are rotatably installed in the threaded holes, a plurality of threaded holes are formed in the base (301) along the length direction of the base in an array mode, and the outer ring of the bottom of each threaded bolt (305) is installed in an adaptive mode with the threaded holes.
4. The steel box girder welding tool according to claim 1, wherein one end of the sliding rod (603) far away from the sliding cavity is fixedly connected with a pull ring.
5. The steel box girder welding tool according to claim 1, wherein the air inlet filter plate (501) is detachably mounted on two side box walls of the flue gas absorbing box (5), the air outlet filter plate (502) is detachably connected to one side of the front face of the flue gas absorbing box (5), and active carbon particles are filled in the air inlet filter plate (501) and the air outlet filter plate (502).
6. The welding process of the steel box girder is characterized by comprising the following welding steps of:
step one: and (3) raw material treatment: preprocessing steel materials and steel plate raw materials used for the steel box girder, cleaning greasy dirt on the outer surface of the steel materials, polishing rust residues, cleaning, finely polishing welding parts, and ensuring stable tightness of raw material welding connection;
step two: fixing a tool: the relative positions of the welded secondary beams and the main beams are determined through a fixed tool, the positions of the secondary beams are adjusted according to the welding positions, and the secondary beams are placed and abutted through the tool, so that the manual supporting workload is reduced; the fixing tool is the steel box girder welding tool of any one of claims 1-5;
step three: welding operation: welding the main beam and the secondary beam by adopting a plurality of welding modes such as carbon dioxide full-automatic shielded welding, submerged arc welding, butt welding, fillet welding and the like, and absorbing the smoke generated in the welding process through a smoke absorbing mechanism;
step four: welding spot inspection: flaw detection is carried out on the welding joint through a flaw detector, the detection is divided into primary detection, secondary detection and tertiary detection, and unqualified welding spot positions are determined to be marked;
step five: defect repair: and (3) combining the welding points marked in the step (III), cleaning the welding points by welding personnel, re-welding the welding points, carrying out three flaw detection on the marked welding points, and carrying out the next welding operation after the marked welding points are completely qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210096841.1A CN114535846B (en) | 2022-01-27 | 2022-01-27 | Steel box girder welding tool and welding process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210096841.1A CN114535846B (en) | 2022-01-27 | 2022-01-27 | Steel box girder welding tool and welding process thereof |
Publications (2)
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