CN103008828A - Special-purpose automatic assembling and tack welding machine tool for plate type reinforcing rib plate units - Google Patents
Special-purpose automatic assembling and tack welding machine tool for plate type reinforcing rib plate units Download PDFInfo
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- CN103008828A CN103008828A CN2012105506491A CN201210550649A CN103008828A CN 103008828 A CN103008828 A CN 103008828A CN 2012105506491 A CN2012105506491 A CN 2012105506491A CN 201210550649 A CN201210550649 A CN 201210550649A CN 103008828 A CN103008828 A CN 103008828A
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Abstract
The invention discloses a special-purpose automatic assembling and tack welding machine tool for plate type reinforcing rib plate units, which comprises a pair of parallel rails and a gantry, the gantry can move on the rails, and an assembling platform is laid between the two rails; the gantry comprises a main crossbeam, uprights and traveling beams, which are fixedly connected together, and one gantry-traveling mechanism is respectively arranged on the bottom of each of the two traveling beams; and the special-purpose automatic assembling and tack welding machine tool is characterized in that a movable welding system and a parallelogram-shaped positioning and clamping mechanism are arranged on the main crossbeam. Because the parallelogram-shaped positioning and clamping mechanism is combined with a polishing and dedusting system and the robotic welding system, the polishing and dedusting of the areas to be welded of the plate type reinforcing rib plate units, the positioning and pressing of plate type reinforcing ribs and robotic tack welding can be automatically controlled together, and the special-purpose automatic assembling and tack welding machine tool has the advantages that the assembly precision of the plate type reinforcing rib plate units is high, the automatic assembly and production efficiency is high, and the quality of welding lines is stable.
Description
Technical field
The present invention relates in the large bridge steel construction is made, become in the various plates unit of Bridge Beam section a kind of automatic Composition tack welding special purpose machine tool that is specifically designed to the board-like floor unit of putting more energy into of assembly welding at assembly welding.
Background technology
In the large-scale steel structure bridge of China, a kind of bridge of box-structure is arranged, its structure be along bridge to around be steel structure body, the centre be divided into a section space by the multilayer diaphragm plate, overall structure resembles a huge long chest, therefore be steel case beam.Its manufacture process is by several plate unit, is welded into bridge section, becomes the steel construction of bridge whole by bridge section docking assembly welding again.The plate unit is the most basic construction unit of box-structure, it has several, and is wherein very common a kind of, also is that larger a kind of of manufacture difficulty is exactly the board-like floor unit of putting more energy into, its structural representation is seen Fig. 1 and Fig. 2, and it mainly is base plate and two coxostermums that consist of steel case beam.For a long time, board-like manufacture of putting more energy into the floor unit is that human assistance carries out assembly welding with simple frock, and the problem that this mode of production exists is rib of slab spacing low precision, and the depth of parallelism is poor between rib of slab, and is poor with the panel perpendicularity, can not guarantee with panel closely connected.Also exist simultaneously efficient low, labour intensity is large, and the exposure formula is removed priming paint and the rust deposite mode causes rust deposite dirt to fill the air, and makes the problems such as work under bad environment.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple to operate, the Multifunctional plate-type that operating efficiency and product quality the are significantly improved floor unit automatic Composition tack welding special purpose machine tool of putting more energy into.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into, comprise rail that pair of parallel arranges, at the mobile gantry frame of rail, and lay assembly platform between two one steel rails; Gantry frame comprises and interfixes the main beam, the column that connect and walk cross girders, and two bottoms of walking cross girders respectively arrange gantry traveling; It is characterized in that: described main beam is provided with movably welding system and parallelogram positioning clamping device.
The traveling of described gantry is located at two each end of walking cross girders, comprises travelling wheel and wheel shaft, by bearing and bearing bracket stand with walk cross girders and connect; Also comprise gearbox and motor, connect the rotation of gearbox power shaft by motor, the gear box output end flange with walk cross girders and connect, output shaft of gear-box connection wheel shaft makes gantry frame walk along rail by the driven by motor travelling wheel.
Wherein, described walking between cross girders and the rail is provided with rail clamping device, is used for before oil cylinder presses down above the parallelogram positioning clamping device, is used for clamping first rail, suspends to avoid whole lathe to break away from rail; Described rail clamping device comprises folder cylinder of rail and jaws part, the folder cylinder of rail is fixed by bolts to away on the cross girders, and the force side of jaws part connects the piston rod of folder cylinder of rail, and rotating shaft is fixed on away on the cross girders, the opening and closing of jaws are by the pulling of folder cylinder of rail piston rod, and jaws is aimed at steel rail web.
Wherein, be provided with rear cross beam one at the described cross girders of walking, rear cross beam is provided with polishing dedusting system; Described polishing dedusting system comprises two groups of wheeled wire brushes, minute left and right sides interlaced arrangement, and wheeled wire brush is fixed on the major axis, and the two ends of major axis are provided with analog bracket, and the centre is provided with auxiliary bracket, buried bearing, carriage and gantry frame bolt-connection; One end of major axis stretches out carriage, and the output of reduction box connects the input connection motor of reduction box, realization rotation; Be buckled with a large dust shield above wheeled wire brush, the two ends bolt of dust shield is on gantry frame; Motor-operated blower fan, its pedestal and the gantry frame bolt of being provided with suitable for reading of dust shield; Be to connect two pipelines again, lead in the fume purifier.
Wherein, the People's Bank of China that described main beam top is provided with the sheet metal tiling walks on stage, and is used for carrying operating personnel, hydraulic system and electric-control system; Hydraulic system comprises Hydraulic Station and the pipeline of discharge pressure oil between Hydraulic Station and oil cylinder; Electric-control system comprises whole working powers and sequence circuit and various electrical accessorie.
Wherein, described main beam is provided with horizontal slideway, and a plurality of traversing supports are installed on the slideway; Welding system and parallelogram positioning clamping device are separately fixed on the corresponding traversing support.
Wherein, described welding system is comprised of the source of welding current, wire-feed motor, wire-feed motor support, welding head and air-cooled welding gun; Wire-feed motor, wire-feed motor support, welding head and the equal bolt of air-cooled welding gun are on traversing support.
Wherein, described parallelogram positioning clamping device comprises the parallelogram linkage on the symmetrical sliding base plate that is fixed on traversing support of two covers, the tailpiece of the piston rod of positional cylinder connects a concentric shafts, cover one spring on the concentric shafts, the one end nut regulating spring of concentric shafts, the other end of spring is controlled with the wedge on the pillow block, wedge two portals on picking up the ears, connect an end of parallelogram linkage with bearing pin, when positional cylinder presses down, make spring push down wedge, the motion of drive parallelogram linkage, two jaws faces are parallel close, finally clamp board-like ribbed stiffener, finish located lateral; Two jaws faces remain in clamping process and are parallel to each other; After the clamping, piston continues lower pressing spring, makes coupling spindle pass spring, compresses vertically downward the ribbed stiffener that will weld, and guarantees the solder side gapless of ribbed stiffener and lower faceplate panels.
Wherein, on traversing support and with the opposing place of parallelogram positioning clamping device, a pair of guider is installed, guider is comprised of two directive wheels and two supports, and support is fixed on the traversing support, and the opening of two directive wheels is aimed at the jaws center of parallelogram positioner.
The beneficial effect that adopts technique scheme to produce is: the present invention has advantages of that board-like ribbed stiffener assembly precision is high, automatic Composition production efficiency is high, weldquality is stable, has very strong specific aim.Technical scheme involved in the present invention is to be based upon on the basis of the body function configuration of system complete and welding test study, has sufficient objectivity and reasonability.
The present invention combines the parallelogram positioning clamping device with polishing dedusting system, robot welding system, the Automatic Control of having realized the board-like polishing dedusting of floor unit to-be-welded region of putting more energy into, board-like ribbed stiffener location, compression and robot tack welding is integrated, propose first with international steel bridge's manufacture field at home, and carried out experimental study, in technological precedence of the same trade, design is unique, ingenious, creative and advanced.Owing to having adopted welding robot to carry out the automatic tack welding technology of board-like ribbed stiffener angle welding, the welding quality tool of the tack weld of the board-like ribbed stiffener angle welding of steel bridge is greatly improved, production efficiency obviously improves, and is practical, has very high economic benefit and social benefit.The invention solves all problems and shortcomings of the above-mentioned original mode of production, make the board-like mode of production of putting more energy into the floor unit in the bridge manufacturing that the raising of matter arranged.Among the present invention except being used for the board-like floor unit automatic Composition of putting more energy into, also be applicable to assembling and the tack welding of similar plate cellular construction, applicability is strong, can apply in manufacture of steel structure fields such as ship steel structure, machined steel structure, construction steel structures, and is applied widely.
Description of drawings
Fig. 1 is the structural representation of the board-like floor unit of putting more energy into;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is structural representation of the present invention;
Fig. 4 is that the A-A of Fig. 3 is to cutaway view;
Fig. 5 is the side view of Fig. 3;
Among the figure, 1, rail, 2-1, main beam, 2-2, column, are walked cross girders, 2-4, traversing support, 2-5, rear cross beam, 2-6, traversing support travelling wheel, 2-7, gantry structure spare at 2-3; 3-1, the source of welding current, 3-2, wire-feed motor, 3-3, wire-feed motor support, 3-4, welding head, 3-5, leading screw, 4-1, folder cylinder of rail, 4-2, jaws part, 5-1, parallelogram linkage, 5-2, jaws face, 5-3, positional cylinder, 5-4, concentric shafts, 5-5, spring, 5-6, nut, 5-7, wedge; 6, polishing dedusting system, 6-7, pipeline, 6-8, fume purifier, 7, assembly platform, 8, gantry traveling, 9, guider, 10, Hydraulic Station, 11, operating desk, 12, board-like ribbed stiffener, 13, panel.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
To shown in Figure 5, the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into of the present invention comprises rail 1 that pair of parallel arranges, at the mobile gantry frame of rail 1, lays assembly platform 7 between two one steel rails 1 such as Fig. 3; Gantry frame comprises and interfixes the main beam 2-1, the column 2-2 that connect and walk cross girders 2-3, and two bottoms of walking cross girders 2-3 respectively arrange gantry traveling 8; Main beam 2-1 is provided with movably welding system and parallelogram positioning clamping device; Walk between cross girders 2-3 and the rail 1 and be provided with rail clamping device 4, be provided with rear cross beam 2-5 one walking cross girders 2-3, main beam 2-1 is positioned at the front of gantry frame direction of advance, and rear cross beam 2-5 is positioned at the back side of gantry frame direction of advance, and rear cross beam 2-5 is provided with polishing dedusting system 6; The People's Bank of China that main beam 2-1 top is provided with the sheet metal tiling walks on stage, carrying operating personnel, hydraulic system and electric-control system; Hydraulic system comprises Hydraulic Station 10 and the pipeline of discharge pressure oil between Hydraulic Station 10 and oil cylinder; Electric-control system comprises whole working powers and sequence circuit and various electrical accessorie.
Rail 1 is tiled on the concrete foundation, and after the levelness and the depth of parallelism of two rail 1 of adjustment, the bolt in being embedded in the basis overlaps top board, is compressed by nut rail is fixed; The plate unit is placed on above the assembly platform 7, carries out assembly welding.Gantry frame comprises whole machine framework and upper railing, and the various piece that it is carrying this lathe is travelled in orbit, finishes welding.This gantry structure frame is comprised of three parts, and namely crossbeam 2-1, column 2-2 and walk cross girders 2-3 use bolt-connection mutually, and crossbeam 2-1 is provided with traversing support 2-4.
Gantry traveling 8 is located at two each end of walking cross girders 2-3, comprises travelling wheel and wheel shaft, by bearing and bearing bracket stand with walk cross girders 2-3 and connect; Also comprise gearbox and motor, connect the rotation of gearbox power shaft by motor, the gear box output end flange with walk cross girders 2-3 and connect, output shaft of gear-box connection wheel shaft makes gantry frame walk along rail 1 by the driven by motor travelling wheel.
Rail clamping device 4 is used for being used for clamping first rail 1 before oil cylinder presses down above the parallelogram positioning clamping device, suspends to avoid whole lathe to break away from rail 1; Rail clamping device 4 comprises folder cylinder of rail 4-1 and jaws part 4-2, folder cylinder of rail 4-1 is fixed by bolts to away on the cross girders 2-3, the force side of jaws part 4-2 connects the piston rod of folder cylinder of rail 4-1, rotating shaft is fixed on away on the cross girders 2-3, the opening and closing of jaws are by the pulling of folder cylinder of rail 4-1 piston rod, and jaws is aimed at rail 1 web of the rail.
Main beam 2-1 is provided with horizontal slideway, and a plurality of traversing support 2-4 are installed on the slideway; Welding system and parallelogram positioning clamping device are separately fixed on the corresponding traversing support 2-4.
Welding system is comprised of source of welding current 3-1, wire-feed motor 3-2, wire-feed motor support 3-3, welding head 3-4 and air-cooled welding gun; Wire-feed motor 3-2, wire-feed motor support 3-3, welding head 3-4 and the equal bolt of air-cooled welding gun are on traversing support 2-4; Source of welding current 3-1 is installed on People's Bank of China walks on stage.When welding, the wire reel of wire-feed motor 3-2 rotates, and by the pipeline of welding head 3-4, welding wire is delivered to endlessly the solder joint at welding head 3-4 muzzle place.Cold wind and welding wire are same pipeline.
The parallelogram positioning clamping device comprises the parallelogram linkage 5-1 on the symmetrical sliding base plate that is fixed on traversing support 2-4 of two covers, positional cylinder 5-3 is fixed by bolts on the traversing support 2-4, by piston rod stretch spur parallelogram linkage 5-1, finish clamping and positioning action; The tailpiece of the piston rod of positional cylinder 5-3 connects a concentric shafts 5-4, the upper cover of concentric shafts 5-4 one spring 5-5, the end of concentric shafts 5-4 nut 5-6 regulating spring 5-5, the other end of spring 5-5 is controlled with the wedge 5-7 on the pillow block, on picking up the ears, wedge 5-7 two portals, an end that connects parallelogram linkage 5-1 with bearing pin, when positional cylinder 5-3 presses down, make spring 5-5 push down wedge 5-7, drive parallelogram linkage 5-1 motion, two jaws face 5-2 are parallel close, finally clamp board-like ribbed stiffener, finish located lateral; Two jaws face 5-2 remain in clamping process and are parallel to each other; After the clamping, piston continues lower pressing spring 5-5, makes coupling spindle pass spring 5-5, compresses vertically downward the ribbed stiffener that will weld, and guarantees the solder side gapless of ribbed stiffener and lower faceplate panels.
On the traversing support 2-4 that the parallelogram positioning clamping device is installed and with the opposing place of parallelogram positioning clamping device, a pair of guider 9 is installed, guider 9 is comprised of two directive wheels and two supports, support is fixed on the traversing support 2-4, and the opening of two directive wheels is aimed at the jaws center of parallelogram positioner.The effect of guider 9 is that individual direction is roughly arranged first when making board-like ribbed stiffener enter the welding position, and the assurance ribbed stiffener can accurately enter the jaws of parallelogram positioning clamping device and avoid colliding with.
Welding system of the present invention, parallelogram positioning clamping device, guider all are fixed by bolts on the different traversing supports, can move simultaneously on by the slideway on the main beam.Movement can be to be stirred by manual, uses bolted behind the lateral attitude that needs when reaching the assembled plate unit.
The course of work of the present invention is: lathe is stopped to workbench one end, make plate unit panel 13 in place, the position that should weld according to board-like ribbed stiffener 12, adjust and open polishing dedusting system 6 work, lathe advances slowly, according to quantity and the position of board-like ribbed stiffener 12, clear out of at panel 13 that several is dustless without the rectangular surface of rust deposite.Afterwards, lathe stop over has arrived the other end of panel 13, adjust the leading screw 3-5 on the traversing support, parallelogram positioning clamping device and guider 9 are put in place by board-like ribbed stiffener distance between plates adjusted size, the floor of will putting more energy into again is by guider 9, stretch between the jaws 5-2 of parallelogram positioning clamping device, the termination horizontal line that aligns is again finished longitudinal register.At this moment, start auto-programming, then parallelogram positioning clamping device, gantry traveling, rail clamping device, welding system and related fluid pressing system begin continuous operation to plate unit and finish assembly welding.The invention solves all problems and shortcomings of the above-mentioned original mode of production, make the board-like mode of production of putting more energy into the floor unit in the bridge manufacturing that the raising of matter arranged.
Claims (9)
1. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into comprises rail (1) that pair of parallel arranges, at the gantry frame of rail (1) movement, lays assembly platform (7) between two one steel rails (1); Gantry frame comprises and interfixes the main beam (2-1), the column (2-2) that connect and walk cross girders (2-3), and two bottoms of walking cross girders (2-3) respectively arrange gantry traveling (8); It is characterized in that: described main beam (2-1) is provided with movably welding system and parallelogram positioning clamping device.
2. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 1, it is characterized in that: described gantry traveling (8) is located at two each end of walking cross girders (2-3), comprise travelling wheel and wheel shaft, by bearing and bearing bracket stand with walk cross girders (2-3) and connect; Also comprise gearbox and motor, connect the rotation of gearbox power shaft by motor, the gear box output end flange with walk cross girders (2-3) and connect, output shaft of gear-box connection wheel shaft makes gantry frame walk along rail (1) by the driven by motor travelling wheel.
3. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 1, it is characterized in that: described walking between cross girders (2-3) and the rail (1) is provided with rail clamping device (4), be used for before oil cylinder presses down above the parallelogram positioning clamping device, be used for clamping first rail (1), suspend to avoid whole lathe to break away from rail (1); Described rail clamping device (4) comprises folder cylinder of rail (4-1) and jaws part (4-2), folder cylinder of rail (4-1) is fixed by bolts to away on the cross girders (2-3), the force side of jaws part (4-2) connects the piston rod of folder cylinder of rail (4-1), rotating shaft is fixed on away on the cross girders (2-3), the opening and closing of jaws are by the pulling of folder cylinder of rail (4-1) piston rod, and jaws is aimed at rail (1) web of the rail.
4. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 1 is characterized in that: be provided with one rear cross beam (2-5) at the described cross girders (2-3) of walking, rear cross beam (2-5) is provided with polishing dedusting system (6); Described polishing dedusting system (6) comprises two groups of wheeled wire brushes, minute left and right sides interlaced arrangement, and wheeled wire brush is fixed on the major axis, and the two ends of major axis are provided with analog bracket, and the centre is provided with auxiliary bracket, buried bearing, carriage and gantry frame bolt-connection; One end of major axis stretches out carriage, and the output of reduction box connects the input connection motor of reduction box, realization rotation; Be buckled with a large dust shield above wheeled wire brush, the two ends bolt of dust shield is on gantry frame; Motor-operated blower fan, its pedestal and the gantry frame bolt of being provided with suitable for reading of dust shield; Be to connect two pipelines (6-7) again, lead in the fume purifier (6-8).
5. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 1 is characterized in that: the People's Bank of China that described main beam (2-1) top is provided with the sheet metal tiling walks on stage, and is used for carrying operating personnel, hydraulic system and electric-control system; Hydraulic system comprises Hydraulic Station (10) and the pipeline of discharge pressure oil between Hydraulic Station (10) and oil cylinder; Electric-control system comprises whole working powers and sequence circuit and various electrical accessorie.
6. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 1, it is characterized in that: described main beam (2-1) is provided with horizontal slideway, and a plurality of traversing supports (2-4) are installed on the slideway; Welding system and parallelogram positioning clamping device are separately fixed on the corresponding traversing support (2-4).
7. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 6, it is characterized in that: described welding system is comprised of the source of welding current (3-1), wire-feed motor (3-2), wire-feed motor support (3-3), welding head (3-4) and air-cooled welding gun; Wire-feed motor (3-2), wire-feed motor support (3-3), welding head (3-4) and the equal bolt of air-cooled welding gun are on traversing support (2-4).
8. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 6, it is characterized in that: described parallelogram positioning clamping device comprises the parallelogram linkage (5-1) on the symmetrical sliding base plate that is fixed on traversing support (2-4) of two covers, the tailpiece of the piston rod of positional cylinder (5-3) connects a concentric shafts (5-4), the upper cover of concentric shafts (5-4) one spring (5-5), one end of concentric shafts (5-4) nut (5-6) regulating spring (5-5), the other end of spring (5-5) is controlled with the wedge on the pillow block (5-7), wedge (5-7) two portals on picking up the ears, an end that connects parallelogram linkage (5-1) with bearing pin, when positional cylinder (5-3) when pressing down, make spring (5-5) push down wedge (5-7), drive parallelogram linkage (5-1) motion, two jaws faces (5-2) are parallel close, finally clamp board-like ribbed stiffener, finish located lateral; Two jaws faces (5-2) remain in clamping process and are parallel to each other; After the clamping, piston continues lower pressing spring (5-5), makes coupling spindle pass spring (5-5), compresses vertically downward the ribbed stiffener that will weld, and guarantees the solder side gapless of ribbed stiffener and lower faceplate panels.
9. the board-like floor unit automatic Composition tack welding special purpose machine tool of putting more energy into according to claim 8, it is characterized in that: upward and with the opposing place of parallelogram positioning clamping device a pair of guider (9) is installed at traversing support (2-4), guider (9) is comprised of two directive wheels and two supports, support is fixed on the traversing support (2-4), and the opening of two directive wheels is aimed at the jaws center of parallelogram positioner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210550649.1A CN103008828B (en) | 2012-12-18 | 2012-12-18 | Special-purpose automatic assembling and tack welding machine tool for plate type reinforcing rib plate units |
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| CN201210550649.1A CN103008828B (en) | 2012-12-18 | 2012-12-18 | Special-purpose automatic assembling and tack welding machine tool for plate type reinforcing rib plate units |
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| CN103008828B CN103008828B (en) | 2014-12-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109465583A (en) * | 2018-11-23 | 2019-03-15 | 眉山中车物流装备有限公司 | Tooling is auxiliarily fixed in a kind of welding |
| CN109514154A (en) * | 2018-12-05 | 2019-03-26 | 河南卫华重型机械股份有限公司 | A kind of quick welding device of PC die station |
| CN109877504A (en) * | 2019-04-19 | 2019-06-14 | 杜宗英 | Ship welds longitudinal parallel muscle ancillary equipment with heavy steel plate |
| CN110508976A (en) * | 2019-08-31 | 2019-11-29 | 江苏扬子鑫福造船有限公司 | A kind of T profile welding set |
| WO2020087939A1 (en) * | 2019-06-14 | 2020-05-07 | 南通大学 | Smoke and dust treatment apparatus for welding |
| CN114247969A (en) * | 2020-09-25 | 2022-03-29 | 山东华耀汽车配件有限公司 | Semitrailer portal frame production line |
| CN116787035A (en) * | 2023-08-22 | 2023-09-22 | 济南领雕数控设备有限公司 | Gantry machining center equipment |
| CN117484067A (en) * | 2024-01-03 | 2024-02-02 | 中铁山桥集团有限公司 | U-shaped rib welding positioning system |
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| CN109877504A (en) * | 2019-04-19 | 2019-06-14 | 杜宗英 | Ship welds longitudinal parallel muscle ancillary equipment with heavy steel plate |
| WO2020087939A1 (en) * | 2019-06-14 | 2020-05-07 | 南通大学 | Smoke and dust treatment apparatus for welding |
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Inventor after: Hu Guangrui Inventor after: Wang Yuzhu Inventor after: Liu Shen Inventor after: Jiang Runmin Inventor after: Wang Songlin Inventor after: Liu Hongzhu Inventor after: Li Xiaofeng Inventor after: Wei Yunxiang Inventor after: Zhang Jinwen Inventor after: Jin Rongming Inventor after: Lou Yuchun Inventor after: Liu Jizhu Inventor after: Qian Yexiang Inventor after: Qu Zhenmei Inventor before: Hu Guangrui Inventor before: Wang Songlin Inventor before: Liu Hongzhu Inventor before: Li Xiaofeng Inventor before: Wei Yunxiang Inventor before: Jin Rongming Inventor before: Lou Yuchun Inventor before: Qu Zhenmei Inventor before: Wang Yuzhu Inventor before: Liu Shen Inventor before: Jiang Runmin |
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Application publication date: 20130403 Assignee: China Railway Shanqiao (Nantong) Co.,Ltd. Assignor: CHINA RAILWAY SHANHAIGUAN BRIDGE GROUP Co.,Ltd. Contract record no.: X2023980033857 Denomination of invention: Special machine tool for automatic assembly and positioning welding of plate stiffening rib unit Granted publication date: 20141224 License type: Common License Record date: 20230320 |
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