CN117226370B - Steel structure overpass truss structure, welding device and welding installation method thereof - Google Patents
Steel structure overpass truss structure, welding device and welding installation method thereof Download PDFInfo
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- CN117226370B CN117226370B CN202311528703.7A CN202311528703A CN117226370B CN 117226370 B CN117226370 B CN 117226370B CN 202311528703 A CN202311528703 A CN 202311528703A CN 117226370 B CN117226370 B CN 117226370B
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- 238000003466 welding Methods 0.000 title claims abstract description 123
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 89
- 239000010959 steel Substances 0.000 title claims abstract description 89
- 238000009434 installation Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 83
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 239000002893 slag Substances 0.000 claims abstract description 39
- 238000009966 trimming Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 5
- 210000003734 kidney Anatomy 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000007790 scraping Methods 0.000 description 10
- 230000001360 synchronised effect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000007405 data analysis Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000010405 clearance mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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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Abstract
The invention discloses a steel structure overpass truss structure, a welding device and a welding installation method thereof, and particularly relates to the field of truss processing. The welding device for the steel structure overpass truss comprises a first conveying device, wherein a fixing station is arranged at the output end of the first conveying device, a second conveying device is arranged at the output end of the fixing station, the first conveying device and the second conveying device are both used for conveying workpieces, the workpieces are waist plates and flange plates, and a welding gun is arranged in the fixing station. According to the welding device, the trimming mechanism II is arranged, the waist plate and the flange plate are heated before welding, so that the problem that the local temperature of the waist plate and the flange plate suddenly rises to generate angular deformation during welding is avoided, and the cleaning mechanism is beneficial to efficiently cleaning welding slag and exposing welding positions; through setting up trimming means one and trimming means two, after waist board and flange board welding are accomplished, even the angular deformation that waist board and flange board produced can adjust the waist board, avoids producing the dead angle that cleaning mechanism clearance can not reach.
Description
Technical Field
The invention relates to the technical field of truss processing, in particular to a steel structure overpass truss structure, a welding device and a welding installation method thereof.
Background
The steel structure truss is a supporting structure and is formed by connecting a plurality of diagonal rods and horizontal rods, and is commonly used for large-span steel structure buildings. At present, in a roof overpass, two buildings are connected through the overpass for pedestrians to walk, the building needs to have the characteristics of good structural stability, large span, short construction period, good economy and the like, and the steel structure overpass truss structure is applied to the roof overpass to meet the required characteristics. H-shaped steel structures are often used as supporting pieces in steel structure overpass trusses, and the supporting pieces are fixed on supporting columns of the steel structure trusses and used for guaranteeing the integrity and stability of the steel structure truss structures. In the H-shaped steel structure used as the connecting piece, in order to reduce the dead weight of the whole structure and provide good elasticity, damping and energy absorption are carried out between steel structures connected with the connecting piece, and a thin plate with lower rigidity is required to be used for adding the H-shaped steel structure used as the connecting piece.
In the production and processing process of the H-shaped steel structure in the prior art, a waist plate is vertically placed at the top of a flange plate, welding materials are paved at the welding position of the waist plate and the flange plate, welding materials are used for welding, so that the strength between the waist plate and the flange plate is high, the sealing performance is good, then a welding gun is used for aligning the welding position and starting a welding gun, in order to keep the production continuity, the subsequent surface paint spraying rust prevention treatment is conveniently carried out after the welding is finished, a workpiece is required to be conveyed by a conveying device to move, the welding gun is kept motionless, a production line is formed, the welding gun is a welding station in the production line, and the workpiece is conveyed among a plurality of stations by the conveying device; wherein, because welding department can produce the welding slag after the welding is accomplished, need in time use clearance mechanism to clear up the welding slag after the welding is accomplished, and in order to make the broken convenient clearance of welding slag, clearance structure need adopt to beat broken and rotate the mode of cleaning, make the welding slag of adhesion on the work piece by clean up to expose the welding department, simultaneously, in order to guarantee the abundant cleanness to the welding slag, need guarantee clearance mechanism's output, specific cleaning operation position closely laminates with the welding seam nearby promptly, thereby realize the comprehensive clearance to the welding slag.
However, the prior art still has the defects that the H-shaped steel is a thin plate low-rigidity material, and the welding part between the waist plate and the flange plate is locally heated during welding, and the expansion degree between the welding part and the non-welding part is different, so that the waist plate and the flange plate deform, wherein the deformation comprises angular deformation, the waist plate and the flange plate cannot meet the vertical state due to the angular deformation, the output end of the cleaning mechanism and the position of welding slag are deviated, the welding slag at part of the positions cannot be fully contacted with the output end of the cleaning mechanism, and further, the welding slag is difficult to clean to form residues, so that the cleaning efficiency is reduced, and the follow-up paint spraying rust prevention effect is affected.
Disclosure of Invention
The invention provides a steel structure overpass truss structure, a welding device and a welding installation method thereof, which aims to solve the problems that: the existing steel structure truss welding device has the advantages that the welding slag at part of the welding slag cannot be fully contacted with the output end of the cleaning mechanism, so that part of the welding slag is difficult to clean to form residues, the cleaning efficiency is reduced, and the follow-up paint spraying and rust preventing effects are affected.
In order to achieve the above purpose, the present invention provides the following technical solutions: the welding device comprises a first conveying device, a fixing station is arranged at the output end of the first conveying device, a second conveying device is arranged at the output end of the fixing station, the first conveying device and the second conveying device are both used for conveying workpieces, the workpieces are waist plates and flange plates, welding guns are arranged in the fixing station, welding guns are used for welding contact positions of the waist plates and the flange plates in the moving process of the waist plates and the flange plates, a cleaning mechanism is arranged on the second conveying device, and comprises a cleaning disc which is rotatably arranged, and the cleaning disc is used for cleaning welding slag at the contact positions of the waist plates and the flange plates through rotation;
still include the adjustment unit, the adjustment unit is used for guaranteeing that clearance dish and waist board and flange plate's contact department position is in safe region all the time, and safe region is clearance for clearance dish to waist board and flange plate's contact department's welding slag all the time.
In a preferred embodiment, the adjusting unit comprises a second trimming mechanism, wherein the second trimming mechanism comprises a plurality of heating coils, the heating coils are used for heating the waist plate and the flange plate before welding and heating the whole temperature of the waist plate and the flange plate to be within a controllable standard, and the adjusting unit further comprises an adjusting unit, wherein the adjusting unit is used for adjusting the angle of the waist plate when the waist plate and the flange plate are subjected to angular deformation.
In a preferred embodiment, the adjusting unit comprises two groups of first trimming mechanisms, the two groups of first trimming mechanisms are respectively arranged on the first conveying device and the second conveying device, the first trimming mechanisms comprise two groups of supporting plates, the supporting plates are fixedly arranged on the second conveying device, the first limiting plates and the second limiting plates are fixedly connected to the supporting plates, the first limiting plates are arranged in parallel with the waist plates of the H-shaped steel, the second limiting plates are arranged in parallel with the flange plates of the H-shaped steel, a plurality of limiting rollers which are arranged at equal intervals are respectively connected to the first limiting plates and the second limiting plates in a rotating mode, the limiting rollers which are arranged on the first limiting plates are in rolling fit with the waist plates, and the limiting rollers which are arranged on the second limiting plates are in rolling fit with the flange plates.
In a preferred embodiment, the adjusting unit comprises a trimming mechanism III, the trimming mechanism III comprises a fixing seat, the fixing seat is fixedly arranged on the conveying device II, the fixing seat is rotationally connected with a mechanical arm I, the mechanical arm I is rotationally connected with a mechanical arm II, the mechanical arm II is rotationally connected with a fixing frame, a linear driver III is fixedly arranged on the fixing frame, an installation frame is fixedly arranged at the output end part of the linear driver III, two adjusting rollers are rotationally connected on the installation frame, and the two adjusting rollers are respectively in rolling fit with two sides of the waist plate.
In a preferred embodiment, the second trimming mechanism further comprises a mounting cover, wherein a plurality of power supplies are fixedly mounted on the inner wall of the mounting cover, the heating coil is fixedly arranged at the connecting end of the power supplies, and the power supplies are used for supplying power to the heating coil.
In a preferred embodiment, the top of the fixing station is fixedly provided with a first linear driver, the output end part of the first linear driver is rotationally connected with a limiting wheel, the limiting wheel is used for pressing down and rolling and positioning the top of the waist plate, the fixing station is fixedly provided with a second linear driver, the output end parts of the second linear drivers are rotationally connected with positioning wheels, and the positioning wheels are used for rolling and positioning two sides of the waist plate.
In a preferred embodiment, the cleaning mechanism comprises a cleaning cover, the cleaning cover is fixedly arranged in the conveying device II, a rotation driver II is fixedly arranged on the cleaning cover, the output end part of the rotation driver II is fixedly connected with a worm, a cleaning disc is fixedly arranged on the worm, a rotating shaft and a driving shaft are rotatably connected to the inner side wall of the cleaning cover, a worm wheel and a bevel gear I are fixedly arranged on the rotating shaft, the worm is meshed with the worm wheel, a bevel gear II and a plurality of cleaning scrapers are fixedly arranged on the driving shaft, the bevel gear I is meshed with the bevel gear II, and the cleaning scrapers are used for breaking welding slag on the surface of the cleaning H-shaped steel.
In a preferred embodiment, the first conveying device and the second conveying device are both rotatably connected with a plurality of driving rollers, the first driving rollers are both fixedly provided with chain wheels, the first conveying device and the second conveying device are both fixedly provided with motors, the output shafts of the motors are fixedly provided with the second chain wheels, and the second chain wheels and the first chain wheels are driven by the same chain.
In a preferred embodiment, the cleaning blade comprises a first blade and a second blade, the first blade is in contact with the waist plate, the first blade is used for breaking up welding slag on the cleaning waist plate, the second blade is in contact with the flange plate, and the second blade is used for breaking up welding slag on the cleaning flange plate.
In a preferred embodiment, two first rotary drivers are fixedly arranged on the fixing station, and driving wheels are fixedly arranged at the output ends of the first rotary drivers, are in rolling fit with the surface of the flange plate and drive the flange plate to move.
The utility model provides a steel construction overpass truss structure, includes steel construction overpass truss structure body, and steel construction overpass truss structure body includes two support girders, and fixed welding has a plurality of support columns between two support girders, and fixedly connected with is a plurality of auxiliary seats between two support girders, and fixedly connected with is the same connecting piece between two adjacent support columns, and the connecting piece is H shaped steel, and the connecting piece includes waist board and two flange boards, and two flange boards are the symmetry setting and fix on the waist board.
A welding installation method of a steel structure overpass truss structure comprises the following steps:
step one: the waist plate is vertically arranged in the middle of the flange plate, and pressure is applied between the waist plate and the flange plate, so that positioning between the waist plate and the flange plate is completed;
step two: welding the contact part of the waist plate and the flange plate by using a welding gun, wherein the waist plate and the flange plate move, the welding gun is not moved, and the waist plate and the flange plate are conveyed while being welded;
step three: the waist plate and the flange plates are adjusted to enable the waist plate and the flange plates to be in a vertical state, welding slag at a welding seam is cleaned, when the two flange plates are welded on the waist plate, complete H-shaped steel is formed, and rust prevention paint spraying treatment is carried out on the H-shaped steel;
step four: h-shaped steel is placed between two support columns, and then the H-shaped steel is welded and installed on the support columns.
The invention has the beneficial effects that:
according to the invention, the trimming mechanism II is arranged, the waist plate and the flange plate are heated before welding, so that the problem that the local temperature of the waist plate and the flange plate suddenly rises to generate angular deformation during welding is avoided, and the cleaning mechanism is beneficial to efficiently cleaning welding slag and exposing welding positions.
According to the invention, the first trimming mechanism and the second trimming mechanism are arranged, so that after the waist plate and the flange plate are welded, even if the angle formed by the waist plate and the flange plate is deformed, the waist plate can be adjusted, and dead angles which cannot be cleaned by the cleaning mechanism are avoided.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a front view of a stationary station of the present invention.
FIG. 3 is a schematic cross-sectional side view of the cleaning hood of the present invention.
Fig. 4 is a front view of the cleaning blade of the present invention.
Fig. 5 is a schematic perspective view of a trimming mechanism according to the present invention.
Fig. 6 is a front view of a first dressing mechanism of the present invention.
Fig. 7 is a front view of a second dressing mechanism of the present invention.
Fig. 8 is a schematic cross-sectional side view of a second finishing mechanism of the present invention.
Fig. 9 is a front view of a finishing mechanism three of the present invention.
FIG. 10 is a schematic view of a cleaning disc cleaning slag when the waist plate and flange plate are angularly deformed.
Fig. 11 is a schematic perspective view of a steel structure overpass truss structure.
Fig. 12 is a flow chart of a method of welding installation.
The reference numerals are: 1. a first conveying device; 2. a second conveying device; 3. fixing a station; 31. a first linear driver; 32. a limiting wheel; 33. a linear driver II; 34. a positioning wheel; 35. a welding gun; 36. rotating the first driver; 37. a driving wheel; 4. an adjusting unit; 41. a trimming mechanism I; 411. a support plate; 412. a first limiting plate; 413. a limiting plate II; 414. a limit roller; 42. a second trimming mechanism; 421. a mounting cover; 422. a power supply; 423. a heating coil; 43. a finishing mechanism III; 431. a fixing seat; 432. a mechanical arm I; 433. a mechanical arm II; 434. a linear driver III; 435. a mounting frame; 436. an adjusting roller; 5. a cleaning mechanism; 51. cleaning the cover; 52. a second rotary driver; 53. a worm; 54. cleaning the disc; 55. a rotating shaft; 56. a worm wheel; 57. bevel gears I; 58. bevel gears II; 59. cleaning a scraping plate; 6. a steel structure overpass truss structure body; 61. supporting a main girder; 62. a support column; 63. an auxiliary seat; 64. and a connecting piece.
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
Referring to fig. 1, 2 and 3 of the specification, a welding device for a steel structure overpass truss structure comprises a first conveying device 1, a fixing station 3 is arranged at the output end of the first conveying device 1, a second conveying device 2 is arranged at the output end of the fixing station 3, the first conveying device 1 and the second conveying device 2 are both used for conveying workpieces, the workpieces are waist plates and flange plates, a welding gun 35 is arranged in the fixing station 3, the waist plates and flange plates are welded at the contact position of the welding gun 35 in the moving process, a cleaning mechanism 5 is arranged on the second conveying device 2, the cleaning mechanism 5 comprises a cleaning disc 54 which is rotatably arranged, and the cleaning disc 54 is used for cleaning welding slag at the contact position of the waist plates and the flange plates through rotation; the cleaning device further comprises an adjusting unit 4, wherein the adjusting unit 4 is used for ensuring that the contact position of the cleaning disc 54 with the waist plate and the flange plate is always in a safe area, and the safe area is the position area of the cleaning disc 54 when the cleaning disc 54 fully contacts and cleans welding slag at the contact position of the waist plate and the flange plate; the adjusting unit 4 comprises a second trimming mechanism 42, the second trimming mechanism 42 comprises a plurality of heating coils 423, the heating coils 423 are used for heating the waist plate and the flange plate before welding and heating the whole temperature of the waist plate and the flange plate to be within a controllable standard, and the adjusting unit 4 also comprises an adjusting unit, wherein the adjusting unit is used for adjusting the angle of the waist plate when the waist plate and the flange plate are subjected to angular deformation; referring to fig. 6 and 7 of the specification, the second finishing mechanism 42 further includes a mounting cover 421, a plurality of power supplies 422 are fixedly mounted on an inner wall of the mounting cover 421, the heating coil 423 is fixedly disposed at a connection end of the power supplies 422, and the power supplies 422 are used for supplying power to the heating coil 423; referring to fig. 3 of the specification, a first linear driver 31 is fixedly installed at the top of the fixing station 3, an output end of the first linear driver 31 is rotatably connected with a limiting wheel 32, the limiting wheel 32 is used for pressing down and rolling and positioning the top of the waist plate, two second linear drivers 33 are fixedly installed on the fixing station 3, positioning wheels 34 are rotatably connected to output ends of the two second linear drivers 33, and the positioning wheels 34 are used for rolling and positioning two sides of the waist plate. Referring to fig. 3 of the specification, the cleaning mechanism 5 comprises a cleaning cover 51, the cleaning cover 51 is fixedly arranged in a second conveying device 2, a second rotary driver 52 is fixedly arranged on the cleaning cover 51, a worm 53 is fixedly connected to the output end part of the second rotary driver 52, a cleaning disc 54 is fixedly arranged on the worm 53, a rotating shaft 55 and a driving shaft are rotatably connected to the inner side wall of the cleaning cover 51, a worm wheel 56 and a first bevel gear 57 are fixedly arranged on the rotating shaft 55, the worm 53 is meshed with the worm wheel 56, a second bevel gear 58 and a plurality of cleaning scrapers 59 are fixedly arranged on the driving shaft, the first bevel gear 57 is meshed with the second bevel gear 58, and the cleaning scrapers 59 are used for breaking up welding slag on the surface of the H-shaped steel;
it should be noted that the above-mentioned controllable standard means that after the temperature of the waist plate and the flange plate is raised, the temperature difference between the welding position of the waist plate and the flange plate and other positions is reduced, and deformation is not generated between the waist plate and the flange plate.
It should be noted that, the second trimming mechanism 42 is mounted on the first conveying device 1, that is, before the waist plate and the flange plate enter the fixing station 3, the heating coil 423 raises the temperatures of the waist plate and the flange plate, the first linear driver 31 and the second linear driver 33 are all driven by cylinders, and the second rotary driver 52 may be driven by motors.
The implementation scene is specifically as follows: referring to fig. 1 of the specification, a flange plate is placed on a first conveying device 1, then a waist plate is vertically placed on the flange plate, a first linear driver 31 and a second linear driver 33 are started, the output end of the first linear driver 31 drives a limiting wheel 32 to move downwards, the output end of the second linear driver 33 drives a positioning wheel 34 to be close to the waist plate, the first linear driver 31 can be closed after the top of the waist plate is positioned by the limiting wheel 32, the second linear driver 33 can be closed after the two positioning wheels 34 are positioned on the two sides of the waist plate, the first conveying device 1, the second conveying device 2, a power supply 422 and a first rotary driver 36 are started, the current of the power supply 422 passes through a heating coil 423 and heats the waist plate and the flange plate, the temperature of the waist plate and the flange plate is increased, the temperature difference between the welding position of the waist plate and the flange plate and other positions is reduced, the waist plate and the flange plate cannot deform, and referring to fig. 10 of the specification, fig. 10 of the specification is a schematic diagram of angular deformation of the waist plate and the flange plate, at the moment, when welding slag is cleaned by the cleaning disc 54, the welding slag in dead corners cannot be cleaned by the cleaning disc, the waist plate and the flange plate are driven to move by the conveying device 1, the flange plate is positioned by the driving wheel 37 in the moving process, the waist plate and the flange plate are in a tightly attached state by the limiting wheel 32 in cooperation with the positioning wheel 34, the welding flux is uniformly paved on two sides of the waist plate, the welding gun 35 is started again, and along with the movement of the waist plate and the flange plate, the welding gun 35 melts the welding flux, the temperature of the waist plate and the flange plate is increased, the welding flux is melted into a gap between the waist plate and the flange plate, at the moment, after the welding is finished, the temperature of the waist plate and the flange plate is integrally increased, the integral temperature of the waist plate and the flange plate can be slowly reduced, namely the internal stress of the waist plate and the flange plate is slowly changed, angular deformation is not caused between the waist plate and the flange plate, then the waist plate and the flange plate move to the second conveying device 2 after passing through the fixing station 3, the second rotating driver 52 is started, the rotation of the output end of the second rotating driver 52 drives the worm 53 to rotate, the worm 53 drives the cleaning disc 54 to rotate, the worm 53 and the worm wheel 56 are meshed with each other to drive the rotating shaft 55 to rotate, the bevel gear one 57 and the bevel gear two 58 are meshed with each other to drive the driving shaft to rotate, the driving shaft drives the cleaning scraping plate 59 to do circular motion, the cleaning scraping plate 59 breaks welding slag on the waist plate and the flange plate, and the cleaning disc 54 cleans welding slag.
In the above embodiment, the mode of heating up the waist plate and the flange plate is adopted to prevent the waist plate and the flange plate from being angularly deformed rapidly, in order to avoid the influence of deformation to a greater extent, the adjusting unit 4 of this embodiment is further adopted, the adjusting unit is used for adjusting the angle of the waist plate when the waist plate and the flange plate are angularly deformed, concretely, referring to fig. 1, fig. 5 and fig. 6 of the specification, the adjusting unit includes two groups of first trimming mechanisms 41, the two groups of first trimming mechanisms 41 are respectively installed on the first conveying device 1 and the second conveying device 2, the first trimming mechanisms 41 include two groups of support plates 411, the support plates 411 are fixedly installed on the second conveying device 2, the first limiting plates 412 and the second limiting plates 413 are fixedly connected on the support plates 411, the first limiting plates 412 are parallel to the waist plates of the H-shaped steel, the second limiting plates 413 are parallel to the flange plates of the H-shaped steel, a plurality of equidistant limiting rollers 414 are respectively connected on the first limiting plates 412 and the second limiting plates 413 in a rotating manner, the limiting rollers 414 on the first limiting plates 412 are respectively installed on the conveying device 1 and the second conveying device 2, the limiting rollers 414 are respectively matched with the second limiting rollers 413 in a rotating manner.
It should be noted that, when the first conveyor 1 is driven, the waist plate and the flange plate enter between the two support plates 411, and if the waist plate is deformed due to expansion caused by heat and contraction caused by cold during the welding process, the limiting roller 414 limits the waist plate, so that the waist plate and the flange plate are always in a vertical state, and then the cleaning scraping plate 59 and the cleaning disc 54 clean welding slag.
Referring to fig. 9 of the specification, this embodiment further provides another solution of an adjusting unit, in which a rigid limiting manner is adopted to make the waist plate and the flange plate be in a vertical state, specifically, the adjusting unit includes a third trimming mechanism 43, the third trimming mechanism 43 includes a fixing seat 431, the fixing seat 431 is fixedly disposed on the second conveying device 2, the fixing seat 431 is rotatably connected with a first mechanical arm 432, the first mechanical arm 432 is rotatably connected with a second mechanical arm 433, the second mechanical arm 433 is rotatably connected with a fixing frame, a third linear driver 434 is fixedly mounted on the fixing frame, an installation frame 435 is fixedly mounted at an output end of the third linear driver 434, two adjusting rollers 436 are rotatably connected on the installation frame 435, and the two adjusting rollers 436 are respectively in rolling fit with two sides of the waist plate, where the third linear driver 434 can adopt a cylinder driving manner.
Further, in order to provide a accurate parameter control to the third adjustment mechanism 43, the adjustment unit further includes a visual identification system, the visual identification system includes a data acquisition module, a data analysis module and a communication module, the data acquisition module is used for gathering the position information of the waist plate and the flange plate, the data acquisition module transmits acquired data to the data analysis module, the data analysis module identifies and judges whether the waist plate is in a vertical state with the flange plate, when the waist plate is not vertical with the flange plate, the data analysis module transmits data feedback to the communication module, the communication module transmits data to the third adjustment mechanism 43, the third adjustment mechanism 43 adjusts the position of the waist plate by driving the two adjustment rollers 436, the waist plate is vertical to the flange plate after adjustment, at this time, the waist plate and the flange plate reenter the cleaning mechanism 5, and the cleaning mechanism 5 cleans welding slag on the waist plate and the flange plate.
In the above embodiment, the first dressing mechanism 41 may be used in combination with the second dressing mechanism 42, or the third dressing mechanism 43 may be used in combination with the second dressing mechanism 42. The temperature of the waist plate and the flange plate is raised through a second trimming mechanism 42 before welding, then the high waist plate and the flange plate are rigidly positioned through a first trimming mechanism 41, or the temperature of the waist plate and the flange plate is raised through the second trimming mechanism 42 before welding, and then the position between the waist plate and the flange plate is monitored through a third trimming mechanism 43.
Referring to fig. 1 of the specification, in order to efficiently convey the waist plate and the flange plate, specifically, a conveying device 1 and a conveying device 2 are respectively and rotatably connected with a plurality of driving rollers, a sprocket 1 is respectively and fixedly installed on the plurality of driving rollers, motors are respectively and fixedly installed on the conveying device 1 and the conveying device 2, a sprocket two is fixedly installed on an output shaft of the motor, and the sprocket two and the plurality of sprockets are driven by the same chain.
The driving roller rotates synchronously, and the waist plate and the flange plate are conveniently and uniformly driven by stress after being placed on the driving roller.
Referring to fig. 3 and fig. 4 of the specification, in order to improve the effect of cleaning the welding slag on the surfaces of the waist plate and the flange plate, specifically, the cleaning scraper 59 includes a first scraper and a second scraper, the first scraper contacts the waist plate, the first scraper is used for shredding the welding slag on the waist plate, the second scraper contacts the flange plate, and the second scraper is used for shredding the welding slag on the flange plate; the corresponding first scraping plate and the second scraping plate are vertically arranged, and when the driving shaft rotates, the driving shaft drives the first scraping plate and the second scraping plate to rotate, and the first scraping plate and the second scraping plate can knock up welding slag on the waist plate and the flange plate.
Referring to fig. 3 of the specification, in order to apply downward pressure to the top of the flange plate and well position the flange plate in the process of conveying the flange plate, specifically, two first rotary drivers 36 are fixedly installed on the fixing station 3, driving wheels 37 are fixedly installed at output ends of the first rotary drivers 36, and the driving wheels 37 are in rolling fit with the surface of the flange plate and drive the flange plate to move.
It should be noted that, the first rotary driver 36 may be in a motor driving mode, the first rotary driver 36 is started, the rotation of the output end of the first rotary driver 36 drives the driving wheel 37 to rotate, the driving wheel 37 rolls with the flange plate, and the effect of limiting and guiding the movement of the flange plate is achieved while the flange plate is driven to move.
Referring to fig. 11 of the specification, a steel structure overpass truss structure comprises a steel structure overpass truss structure body 6, the steel structure overpass truss structure body 6 comprises two support girders 61, a plurality of support columns 62 are fixedly welded between the two support girders 61, a plurality of auxiliary seats 63 are fixedly connected between the two support girders 61, the same connecting piece is fixedly connected between the two adjacent support columns 62, the connecting piece is H-shaped steel, the connecting piece comprises a waist plate and two flange plates, and the two flange plates are symmetrically arranged and fixed on the waist plate.
Referring to fig. 12 of the specification, a welding installation method of a steel structure overpass truss structure includes the following steps:
step one: the waist plate is vertically arranged in the middle of the flange plate, and pressure is applied between the waist plate and the flange plate, so that positioning between the waist plate and the flange plate is completed;
step two: welding the contact part of the waist plate and the flange plate by using a welding gun 35, moving the waist plate and the flange plate, keeping the welding gun 35 motionless, and conveying the waist plate and the flange plate while welding;
step three: the waist plate and the flange plates are adjusted to enable the waist plate and the flange plates to be in a vertical state, welding slag at a welding seam is cleaned, when the two flange plates are welded on the waist plate, complete H-shaped steel is formed, and rust prevention paint spraying treatment is carried out on the H-shaped steel;
step four: h-shaped steel is placed between two support columns, and then the H-shaped steel is welded and installed on the support columns.
The lifting scheme for the construction of the steel structure overpass truss structure is specifically as follows:
if the split high-altitude bulk loading is adopted, not only the high-altitude assembly and welding workload is large, the on-site mechanical equipment is difficult to meet the hoisting requirement, but also the required high-altitude assembly jig frame is difficult to set up, and great safety and quality risks exist. The construction difficulty is high, and the safety, quality and construction period control of the steel structure on-site installation are not facilitated.
According to the successful experience of similar engineering in the past, if the structure is assembled into a whole on the ground right below the installation position, the whole is lifted in place by utilizing the ultra-large component hydraulic synchronous lifting technology, so that the installation and construction difficulty is greatly reduced, and the method is beneficial to quality, safety, construction period, construction cost control and the like.
The scheme idea of the conversion truss is as follows: the steel structure lifting unit is assembled into a whole on the ground under the projection surface, meanwhile, lifting upper lifting points are arranged on upper chords of the steel truss and the two-side main building structural connection sections according to the structural characteristics of the steel beam, lifting points are raised by +56.180m on the steel truss, a hydraulic lifter is placed, each truss is provided with two groups of lifting upper lifting points, and lifting lower lifting points are arranged at positions corresponding to the upper lifting points on the lower chords of the assembled steel truss lifting unit. And integrally lifting the steel structure lifting unit to the designed installation position by utilizing the hydraulic synchronous lifting system, installing the section after installation, and dismantling the hydraulic synchronous lifting equipment to finish installation.
The scheme idea of the overpass is as follows: the roof steel overpass is positioned at the structural elevation +99.330m, and is assembled into a whole on 19 floors (+ 56.180 m) below the orthographic projection of the steel overpass during the whole lifting operation, and the roof steel overpass comprises subsidiary structures such as a floor support plate and the like; then, on the main building roof layers on two sides of the roof steel overpass, lifting steel platforms (lifting points) are arranged by utilizing a civil engineering structure, and the total number of the steel platforms is two, and 2 hydraulic lifters are arranged on each steel platform, so that the total number of the steel platforms is 4. And setting a lifting lower lifting point at a position of the assembled lifting unit corresponding to the upper lifting point. And integrally lifting the steel structure lifting unit to the designed installation position by utilizing the hydraulic synchronous lifting system, installing the section after installation, and dismantling the hydraulic synchronous lifting equipment to finish installation.
The concrete thought of the lifting of the steel structure of the conversion truss is as follows:
the steel structure lifting unit is assembled into an integral lifting unit on the ground right below the projection surface of the installation position of the steel structure lifting unit;
setting lifting measures (upper lifting points) and setting 6 lifting points;
installing hydraulic synchronous lifting equipment, including a hydraulic pump source system, a lifter, a sensor and the like;
installing a temporary lifting appliance for lifting the lower lifting point at a position corresponding to the upper lifting point of the lifting steel beam;
installing a special bottom anchor and a special steel strand between the lifting upper and lower lifting points;
debugging a hydraulic synchronous lifting system;
stretching the steel strands to uniformly stress all the steel strands;
checking whether all temporary measures of the steel structure lifting unit and the hydraulic synchronous lifting meet design requirements;
after confirming that the errors are avoided, gradually loading according to the sequence of 20%, 40%, 60%, 70%, 80%, 90%, 95% and 100% of the designed load until the lifting unit is separated from the assembly platform;
after the lifting unit lifts about 150mm, the lifting is suspended;
finely adjusting elevation of each lifting point of the lifting unit to enable the elevation of each lifting point to be horizontal, and standing for 4-12 hours;
checking whether the steel structure lifting unit and the hydraulic synchronous lifting temporary measure are abnormal or not again;
after confirming that no abnormal condition exists, starting formal lifting;
integrally lifting the steel structure lifting unit to be close to the installation elevation to suspend lifting;
measuring the actual size of each point of the lifting unit, checking and processing the actual size with the design value, reducing the lifting speed, continuously lifting the steel structure to approach the design position, and enabling each lifting hanging point to reach the design position through the fine adjustment and inching functions of the computer system so as to meet the butt joint requirement;
the steel structure lifting unit is in butt joint with the upper structure preassembling section to form a whole;
after the steel structure is in butt joint, each lifting point of the hydraulic lifting system is sequentially unloaded, and the steel structure is installed and then is provided with a section, so that the dead weight of the steel structure is transferred to the main structure to reach a design state;
and (5) dismantling the hydraulic lifting equipment, and completing the steel structure lifting operation.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (4)
1. A steel construction overpass truss welding device, characterized in that includes:
the conveying device I (1), fixed station (3) is installed to the output of conveying device I (1), conveyor II (2) is installed to the output of fixed station (3), conveyor I (1) and conveyor II (2) all are used for conveying the work piece, and the work piece is waist board and flange board, be provided with welder (35) in fixed station (3), the in-process that waist board and flange board removed, welder (35) welds waist board and flange board's contact department, install cleaning mechanism (5) on conveyor II (2), cleaning mechanism (5) are including rotating cleaning disc (54) that sets up, cleaning disc (54) are through rotating the clearance to waist board and flange board's contact department's slag;
the cleaning device further comprises an adjusting unit (4), wherein the adjusting unit (4) is used for ensuring that the contact position of the cleaning disc (54) with the waist plate and the flange plate is always in a safety area, and the safety area is used for always cleaning welding slag at the contact position of the cleaning disc (54) with the waist plate and the flange plate;
the adjusting unit (4) comprises a second trimming mechanism (42), the second trimming mechanism (42) comprises a plurality of heating coils (423), the heating coils (423) are used for heating the waist plate and the flange plate before welding and heating the whole temperature of the waist plate and the flange plate to be within a controllable standard, and the adjusting unit (4) further comprises an adjusting unit used for adjusting the angle of the waist plate when the waist plate and the flange plate are subjected to angular deformation;
the adjusting unit comprises two groups of trimming mechanisms I (41), the two groups of trimming mechanisms I (41) are respectively arranged on a conveying device I (1) and a conveying device II (2), the trimming mechanisms I (41) comprise two groups of supporting plates (411), the supporting plates (411) are fixedly arranged on the conveying device II (2), a limiting plate I (412) and a limiting plate II (413) are fixedly connected to the supporting plates (411), the limiting plate I (412) is arranged in parallel with a waist plate of H-shaped steel, the limiting plate II (413) is arranged in parallel with a flange plate of the H-shaped steel, a plurality of limiting rollers (414) which are arranged at equal intervals are respectively connected to the limiting plate I (412) and the limiting plate II (413) in a rotating mode, the limiting rollers (414) which are rotated on the limiting plate I (412) are in rolling fit with the waist plate, and the limiting rollers (414) which are rotated on the limiting plate II (413) are in rolling fit with the flange plate;
or the adjusting unit comprises a trimming mechanism III (43), the trimming mechanism III (43) comprises a fixing seat (431), the fixing seat (431) is fixedly arranged on a conveying device II (2), a mechanical arm I (432) is rotationally connected to the fixing seat (431), a mechanical arm II (433) is rotationally connected to the mechanical arm I (432), a fixing frame is rotationally connected to the mechanical arm II (433), a linear driver III (434) is fixedly arranged on the fixing frame, a mounting frame (435) is fixedly arranged at the output end part of the linear driver III (434), two adjusting rollers (436) are rotationally connected to the mounting frame (435), and the two adjusting rollers (436) are respectively in rolling fit with two sides of the waist plate;
the cleaning mechanism (5) comprises a cleaning cover (51), the cleaning cover (51) is fixedly arranged in a conveying device II (2), a rotary driver II (52) is fixedly arranged on the cleaning cover (51), a worm (53) is fixedly connected to the output end part of the rotary driver II (52), a cleaning disc (54) is fixedly arranged on the worm (53), a rotating shaft (55) and a driving shaft are rotatably connected to the inner side wall of the cleaning cover (51), a worm wheel (56) and a first bevel gear (57) are fixedly arranged on the rotating shaft (55), the worm (53) is meshed with the worm wheel (56), a second bevel gear (58) and a plurality of cleaning scrapers (59) are fixedly arranged on the driving shaft, and the first bevel gear (57) is meshed with the second bevel gear (58), and the cleaning scrapers (59) are used for knocking and cleaning welding slag on the surface of H-shaped steel;
the top fixed mounting of fixed station (3) has sharp driver one (31), the output rotation of sharp driver one (31) is connected with spacing wheel (32), spacing wheel (32) are used for pushing down roll location to the top of kidney board, fixed station (3) is last to be fixed mounting have two sharp driver two (33), two the output of sharp driver two (33) is all rotated and is connected with positioning wheel (34), positioning wheel (34) are used for carrying out roll location to the both sides of kidney board.
2. The steel structure overpass truss welding device of claim 1, wherein: the second trimming mechanism (42) further comprises a mounting cover (421), a plurality of power supplies (422) are fixedly mounted on the inner wall of the mounting cover (421), the heating coil (423) is fixedly arranged at the connecting end of the power supplies (422), and the power supplies (422) are used for supplying power to the heating coil (423).
3. The steel structure overpass truss welding device of claim 1, wherein: the conveying device I (1) and the conveying device II (2) are respectively and rotatably connected with a plurality of driving rollers, a plurality of driving rollers are respectively and fixedly provided with a first sprocket wheel, the conveying device I (1) and the conveying device II (2) are respectively and fixedly provided with a motor, the output shaft of the motor is fixedly provided with a second sprocket wheel, and the second sprocket wheel and the first sprocket wheels are driven by the same chain.
4. A welding installation method of the welding device according to claim 1, comprising the steps of:
step one: the waist plate is vertically arranged in the middle of the flange plate, and pressure is applied between the waist plate and the flange plate, so that positioning between the waist plate and the flange plate is completed;
step two: welding the contact part of the waist plate and the flange plate by using a welding gun (35), wherein the waist plate and the flange plate move, the welding gun (35) is not moved, and the waist plate and the flange plate are conveyed while being welded;
step three: the waist plate and the flange plates are adjusted to enable the waist plate and the flange plates to be in a vertical state, welding slag at a welding seam is cleaned, when the two flange plates are welded on the waist plate, complete H-shaped steel is formed, and rust prevention paint spraying treatment is carried out on the H-shaped steel;
step four: h-shaped steel is placed between two support columns, and then the H-shaped steel is welded and installed on the support columns.
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| CN202311528703.7A CN117226370B (en) | 2023-11-16 | 2023-11-16 | Steel structure overpass truss structure, welding device and welding installation method thereof |
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