WO2019228304A1 - Outil de fabrication permettant de souder une nervure en forme de u d'une unité de plaque orthotrope, et ligne d'assemblage et procédé - Google Patents

Outil de fabrication permettant de souder une nervure en forme de u d'une unité de plaque orthotrope, et ligne d'assemblage et procédé Download PDF

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Publication number
WO2019228304A1
WO2019228304A1 PCT/CN2019/088579 CN2019088579W WO2019228304A1 WO 2019228304 A1 WO2019228304 A1 WO 2019228304A1 CN 2019088579 W CN2019088579 W CN 2019088579W WO 2019228304 A1 WO2019228304 A1 WO 2019228304A1
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WO
WIPO (PCT)
Prior art keywords
welding
steel plate
rib
area
orthotropic
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Application number
PCT/CN2019/088579
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English (en)
Chinese (zh)
Inventor
汪小根
Original Assignee
湖北天高桥梁工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201810524874.5A external-priority patent/CN108747078A/zh
Priority claimed from CN201820802096.7U external-priority patent/CN208483393U/zh
Application filed by 湖北天高桥梁工程有限公司 filed Critical 湖北天高桥梁工程有限公司
Publication of WO2019228304A1 publication Critical patent/WO2019228304A1/fr

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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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding

Definitions

  • the present invention relates to the field of welding, and in particular to a U-rib welding manufacturing tool, assembly line, and welding method for orthotropic plate units.
  • the U-rib plate unit includes a U-rib and a bottom plate (that is, a steel plate).
  • the closed U-rib is slender and narrow. Its length is usually more than 12m, and the cross-sectional size is generally less than 300mm ⁇ 300mm. It is difficult to weld the inner corner of the U-rib.
  • single-sided welding can be used for welding U-ribs on the bottom plate. This welding method is mostly based on CO 2 gas shielded welding with a large bevel at the outer corner to achieve 80% penetration. When the outer welding current is small Or the gun tip is offset, the arc cannot reach 80% penetration. When the external welding current is too large, it is easy to break through the molten pool and cause welding defects. There is a "prefabricated" crack at the weld root, and the stress is prominent. Under the alternating load of the wheel, the fatigue crack is very serious, causing the bridge deck to crack and difficult to repair. .
  • double-sided welding is also used to weld the U-rib to the bottom plate.
  • welding equipment such as a welding trolley is used to enter the inside of the U-rib to weld the inner corner of the U-rib.
  • this welding method is a single-sided welding method, The defects have been improved, and the stress at the weld root has been reduced, but the technical problems of the single-sided welding method still cannot be completely overcome: the inner fillet weld has no penetration depth, and the weld metal is attached to the bottom plate and U-rib web On both surfaces, full penetration welding of U-ribs cannot be achieved.
  • the U-rib welding needs to be manually polished and scribed in advance, which further reduces the production efficiency and quality stability of the U-rib plate unit.
  • the present invention provides a U-rib welding manufacturing tool, assembly line, and welding method for orthotropic plate unit, which can realize the assembly and welding integration, and can also disassemble the operations in sequence, greatly improving the U-rib.
  • the production efficiency of the plate unit achieves full penetration welding and significantly improves the fatigue resistance of the welded panel.
  • longitudinal refers to the length direction of the orthotropic plate unit, and is also the length direction of the steel plate and U ribs.
  • Transverse refers to the width direction of the orthotropic plate unit, and “vertical” or “vertical direction” refers to the orthotropic plate.
  • the “workpiece” appearing separately in the present invention refers to the U-rib and steel plate of the orthotropic plate unit, and the “orthotropic plate unit” in the present invention may refer to the overall structure of the steel plate and the U-rib, and may also refer to “ “Steel plate” or "U rib” as long as the meaning is clear.
  • the invention provides a U-rib welding manufacturing tool for an orthotropic plate unit.
  • the orthotropic plate unit includes a steel plate and a U-rib.
  • the tooling at least includes a moving base, an internal welding system, and a U-rib lifting device.
  • the moving base is used to support the orthotropic plate unit, and guide the orthotropic plate unit to move longitudinally.
  • the moving base has a fixed area and a welding area in order along the moving direction.
  • An assembly area is fixed between the fixed area and the welding area.
  • Zone is used for fixed internal welding system, welding zone is used for welding gun welding, and assembly area is used for assembly of steel plates and U ribs;
  • the internal welding system includes a welding head, a connecting line, a power source, a control box, a welding wire tray or a welding wire barrel, the welding head has an internal welding gun head, and the connecting line includes a cable, a signal control line, a welding wire, and a power supply.
  • the welding head is arranged in the welding zone; the connecting pipeline extends from the welding zone through the assembly zone to the fixed zone, and the cables, signal control wires, and welding wires are respectively connected to the power supply and the control box at one end of the fixed zone. , Welding wire drum or welding wire barrel connected;
  • the U-rib lifting device is used for hoisting a U-rib on a steel plate in an assembly area.
  • the internal welding system further includes a fixing device, the fixing device includes a fixing frame and a connecting arm, the fixing frame is disposed in the fixing area, the length direction of the connecting arm is the same as the moving direction, and one end of the connecting arm It is connected with the fixed frame, and the other end is connected with the welding head.
  • the fixing device includes a fixing frame and a connecting arm
  • the fixing frame is disposed in the fixing area
  • the length direction of the connecting arm is the same as the moving direction
  • one end of the connecting arm It is connected with the fixed frame, and the other end is connected with the welding head.
  • connection pipeline is laid along a connection arm.
  • the connecting arm includes a positioning guide and a connecting rod, and the outer shape of the positioning guide is trapezoidal.
  • the internal welding system further includes a fixing device, the fixing device includes a fixing frame and a connecting line, the fixing frame is arranged in the fixing area, the fixing frame is relatively fixed to the ground, and the length direction of the connecting line is the same as the moving direction , One end of the connecting wire is connected to the fixed frame, and the other end is connected to the welding head.
  • the fixing device includes a fixing frame and a connecting line
  • the fixing frame is arranged in the fixing area
  • the fixing frame is relatively fixed to the ground
  • the length direction of the connecting line is the same as the moving direction
  • One end of the connecting wire is connected to the fixed frame, and the other end is connected to the welding head.
  • the internal welding system further includes a pipeline, and the cables and connecting wires of the internal welding system are arranged in the pipeline.
  • gantry which is arranged in the welding area and spans above the moving base.
  • the first positioning and locking device includes a U-rib side pressure mechanism, a U-rib opening limit mechanism, a compression mechanism, and a jacking mechanism; the U-rib side pressure mechanism and the clamping mechanism are installed.
  • the U-rib opening limit mechanism is on the welding head.
  • the U-rib side pressure mechanism is used to squeeze and position the U rib on the outside of the two webs of the U rib.
  • the U-rib opening limit mechanism is used on the U rib.
  • the U-ribs are expanded and restrained on the inner side of the web.
  • the pressing mechanism is used to apply downward pressure on the top of the U-ribs.
  • the pressing mechanism is used to apply a pressing force to the steel plate at the bottom of the steel plate.
  • an external welding system is also included, and the external welding head of the external welding system is arranged on the gantry.
  • a traction zone is provided after the welding zone.
  • the traction zone has a moving base and a tractor.
  • the tractor can be moved forward and backward along the moving base across the moving base.
  • It also includes an auxiliary vehicle, which is arranged in the assembly area and assists the vehicle. Can walk back and forth in the assembly area.
  • a steel plate lateral locator is also provided in the assembly area, and the steel plate lateral locator includes a front locator and a rear locator.
  • the front locator is disposed at the front end of the assembly area, and the front end is close to the welding area and is disposed in the mobile area.
  • the rear locator is set at the rear end of the assembly area. The rear end is an end near the fixed area and is located on both sides of the mobile base.
  • the front end of the front locator is also provided with a steel plate longitudinal stopper and a U-rib stop ⁇ ⁇ Bit devices.
  • the fixing frame has a beam
  • the beam has a slide plate.
  • the slide plate can move laterally along the beam.
  • One end of the connecting arm is connected to the slide plate, and the other end is connected to the welding head.
  • the internal welding system further includes a welding head fixing device, the welding head fixing device is provided in the welding area, the welding head fixing device is provided on the gantry, one end is fixed to the gantry, and the other end is connected to the welding head, And it is detachably connected with the welding head for adjusting the vertical distance between the welding head and the moving base, and fixing the welding head.
  • a welding head fixing device the welding head fixing device is provided in the welding area
  • the welding head fixing device is provided on the gantry, one end is fixed to the gantry, and the other end is connected to the welding head, And it is detachably connected with the welding head for adjusting the vertical distance between the welding head and the moving base, and fixing the welding head.
  • the internal welding system further includes a welding head support device, the welding head support device is disposed in a welding area, the welding head support device is disposed under a moving base, and the welding head support device may be in a vertical direction
  • the upper telescopic when the internal welding is about to be completed, when the welding head is exposed from the rear end of the steel plate, the welding head support device is extended, the top exceeds the height of the moving base, and contacts the bottom of the welding head to support the welding head.
  • the application also provides an orthotropic plate unit manufacturing assembly line, which includes the orthotropic plate unit U-rib welding manufacturing tool as described above, and further includes a welding preparation unit, which includes a rust removal and grinding device and a cutting device.
  • the application also provides a method for welding U-ribs of an orthotropic plate unit.
  • the orthotropic plate unit includes a steel plate and a U-rib, and includes: a moving base.
  • the moving base has a fixed area and a welding area in the moving direction in sequence. Between the fixed area and the welding area is an assembly area, and the method includes the following steps:
  • the steel plate enters the moving base so that the steel plate completely enters the assembly area.
  • the front end of the steel plate is near one end of the welding area and the rear end of the steel plate is near one end of the fixed area.
  • the steel plate and the U rib move forward in the longitudinal direction together, and the internal welding torch head performs internal welding on the orthotropic plate unit from the front end of the steel plate.
  • the steel plate entering the moving base in the welding method includes the following steps:
  • the front end of the steel plate enters the mobile base from one end of the fixed area;
  • the steel plate moves forward in the longitudinal direction to the rear end of the steel plate and passes through the fixed area.
  • the present application also provides a method for performing orthotropic plate unit U-rib welding manufacturing according to the above-mentioned orthotropic plate unit U-rib welding manufacturing tool, the method includes the following steps:
  • the steel plate enters the moving base so that the steel plate completely enters the assembly area.
  • the front end of the steel plate is near one end of the welding area and the rear end of the steel plate is near one end of the fixed area. At this time, the steel plate is between the moving base and the connecting pipeline;
  • the steel plate and the U rib move forward in the longitudinal direction together, and the inner welding torch head internally welds the U rib of the orthotropic plate unit from the front end of the steel plate.
  • the present invention also provides a method for performing orthotropic plate unit U-rib welding manufacturing according to the above-mentioned orthotropic plate unit U-rib welding manufacturing tool, the method includes the following steps:
  • the steel plate enters the moving base so that the steel plate completely enters the assembly area.
  • the front end of the steel plate is near the end of the welding area and the rear end of the steel plate is near the end of the fixed area. At this time, the steel plate is between the moving base and the connecting arm.
  • the steel plate and the U rib move forward in the longitudinal direction together, and the inner welding torch head internally welds the U rib of the orthotropic plate unit from the front end of the steel plate.
  • the invention also provides a method for orthotropic plate unit U-rib welding manufacturing according to the above-mentioned orthotropic plate unit U-rib welding manufacturing tool, the method includes the following steps:
  • the front end of the steel plate enters the mobile base from the fixed area;
  • the steel plate moves forward in the longitudinal direction to the rear end of the steel plate and passes through the fixed area;
  • the steel plate completely enters the assembly area, the front end of the steel plate is near the end of the welding area, and the rear end of the steel plate is near the end of the fixed area; at this time, the steel plate is between the moving base and the connecting arm;
  • the steel plate and the U rib are moved forward along the longitudinal direction, and the spot welding of the U rib is performed at a distance in the welding zone.
  • the steel plate and the U rib enter the traction area to complete the positioning of the U rib and the steel plate.
  • the method further includes the following steps:
  • the positioned orthotropic plate unit is reversely translated from the traction area into the assembly area until the front end of the steel plate reaches the welding area, and the inner welding gun head is placed in the front abdominal cavity of the U rib;
  • the internal welding gun head performs internal welding on the U rib of the orthotropic plate unit from the front end of the steel plate.
  • the present application also provides a method for welding U-ribs of an orthotropic plate unit.
  • the orthotropic plate unit includes a steel plate and a U-rib, and includes: an assembly line with a moving base; and a welding preparation area is sequentially provided along the moving direction of the assembly line on the moving base. , A fixed area, an assembly area, a welding area, and a traction area. The assembly area is between the fixed area and the welding area.
  • the method includes the following steps:
  • the steel plate enters the welding preparation area, the length of the steel plate is consistent with the direction of the assembly line, the steel plate moves forward or back and forth, and the rust removal and grinding device grinds and grinds it;
  • the front end of the steel plate enters the moving base from one end of the fixed area, and the steel plate travels longitudinally to the rear end of the steel plate and passes through the fixed area;
  • the U rib is hoisted to the steel plate to complete the assembly of the U rib and the steel plate;
  • the steel plate and the U rib move forward along the longitudinal direction, and the internal welding torch head performs internal welding on the orthotropic plate unit from the front end of the steel plate until the rear end passes through the welding area.
  • the method further includes: welding at the outside of the U-rib corner seam simultaneously or separately.
  • the inner welding is submerged arc welding.
  • the present invention has at least the following beneficial effects:
  • the assembly line operation can be completed.
  • the assembly line is in place at one time, which reduces the reversal and repeated positioning of heavy workpieces in the workshop, and improves efficiency and welding quality.
  • FIG. 1 is a schematic diagram of a welding structure of an orthotropic plate unit
  • FIG. 2 is a schematic cross-sectional view of an orthotropic plate unit
  • FIG. 3 is a schematic diagram of an embodiment of a U-rib welding manufacturing tool of the orthotropic plate unit of the present invention.
  • FIG. 4 is a schematic structural diagram of a first embodiment of a fixing device according to the present invention.
  • FIG. 5 is a schematic structural diagram of a second embodiment of a fixing device according to the present invention.
  • FIG. 6 is a schematic diagram of a gantry of the present invention.
  • FIG. 7 is a schematic diagram of a first positioning and locking device according to the present invention.
  • FIG. 8 is a schematic cross-sectional view of a first positioning and locking device according to the present invention.
  • FIG. 9 is a schematic diagram of a U-rib welding manufacturing tool of the orthotropic plate unit of the present invention.
  • FIG. 10 is a schematic diagram of an embodiment of a welding pipeline according to the present invention.
  • FIG. 1 it is a schematic diagram of a welding structure of an orthotropic plate unit.
  • the orthotropic plate unit includes a steel plate 1 and a U-rib 2.
  • the steel plate 1 faces upward and the U rib 2 is below.
  • FIG. 2 is a schematic cross-sectional view of an U-rib assembly of an orthotropic plate unit.
  • Steel plate 1 is a structural steel with a thickness B1 ⁇ 12mm. The performance and processing accuracy should meet the relevant industry standards such as the State and the Ministry of Transport.
  • U rib 2 is structural steel, its thickness should be B2 ⁇ 6mm, height H ⁇ 250mm, upper mouth width Wa ⁇ 250mm, lower bottom width Wb ⁇ 150mm, rolled or cold-formed, performance and processing accuracy should meet the country and transportation Relevant industry standards such as the Ministry of Transport, both sides of the lower corner of the U-rib can be opened or beveled.
  • the U ribs are positioned on the steel plate, and the U ribs and the steel plate are as close as possible. After the U-rib is positioned on the steel plate, the corner seam is welded, and the weld is inspected according to the design requirements and relevant weld inspection procedures to check the quality of the weld.
  • the invention provides a welding manufacturing tool and method for the orthotropic plate unit.
  • FIG. 3 is a schematic diagram of an embodiment of a U-rib welding manufacturing tool for an orthotropic plate unit according to the present invention.
  • the tooling includes at least: a moving base 101, an internal welding system, and a U-rib lifting device (not shown in the figure).
  • the moving base 101 is used to support the orthotropic plate unit 100 and guide the orthotropic plate unit 100 to move in the longitudinal direction.
  • the moving base can consist of rollers (as shown in the figure) or slides.
  • the steel plate 1 of the orthotropic plate unit 100 is placed on a roller table or slideway and can be moved along the roller table or slideway.
  • the roller or slideway itself may be driven without driving.
  • the steel plate 1 and the U rib 2 of the orthotropic plate unit 100 are driven by other driving devices, such as a power cart.
  • the slide rail or roller table may also have its own driving device, such as a drive motor, etc., to provide a certain speed to the roller table or roller table to drive the orthotropic plate unit 100 to move.
  • the specific driving method and form of the moving base 101 are not strictly limited, and only the workpiece needs to be moved.
  • the moving base 101 has a fixed area 1011 and a welding area 1012 in order along the moving direction.
  • An assembly area 1013 is located between the fixed area 1011 and the welding area 1012.
  • the fixed area 1011 is used for fixing the internal welding system, and the welding area 1012 is used for welding gun application. Welding, assembly area 1013 is used for assembling steel plate 1 and U rib 2.
  • the length of the assembly area is not less than the length of the U rib.
  • U-rib hoisting device is used to hoist U-rib on steel plate for assembly.
  • the U-rib lifting device may be a lifting device such as a gantry crane.
  • the internal welding system of the present invention includes at least a welding head 1021, a connecting pipeline 1022, and a power source 1023.
  • the welding head has an internal welding torch head.
  • the power source 1023 supplies power to the welding head 1021 through a cable in the connection line 1022.
  • the welding head 1021 is disposed in the welding area, and the welding head is not moved relative to the ground during welding.
  • the connection pipeline 1022 extends through the assembly area 1013 to the fixed area 1011, and is connected to a power source and other equipment at one end of the fixed area.
  • the method for welding and manufacturing an U-rib of an orthotropic plate unit according to the present invention includes the following steps:
  • the steel plate enters the moving base, so that the front end of the steel plate is near one end of the welding area and the rear end of the steel plate is near one end of the fixed area; the steel plate is under the internal welding head and the connecting pipeline;
  • the U-rib lifting device lifts the U-rib to the steel plate along the connecting pipeline, and the U-rib and the steel plate are assembled;
  • the steel plate and the U rib move forward in the longitudinal direction together, and the internal welding torch head performs internal welding on the orthotropic plate unit from the front end of the steel plate.
  • the welding manufacturing method of the U-ribs of the orthotropic plate unit of the present invention By using the welding manufacturing method of the U-ribs of the orthotropic plate unit of the present invention, during internal welding, the workpiece of the orthotropic plate unit or the inner welding head does not need to move back and forth. After the assembly is completed, the steel plate and the U-ribs move in one direction. Can complete internal welding, convenient and efficient, and good welding quality.
  • the internal welding system can be fixed by a fixing device.
  • the following are specific examples of the fixing device.
  • the first embodiment of the fixing device is: the fixing device 200 includes a fixing frame 2001 and a connecting arm 2002.
  • the fixing frame 2001 is disposed in a fixed area.
  • the fixing frame 2001 is relatively fixed to the ground.
  • the direction (the direction of the arrow in FIG. 10) is the same.
  • One end of the connecting arm 2002 is connected to the fixing frame 2001 and the other end is connected to the welding head 1021.
  • the fixing frame has a cross beam 2011, one end of the connecting arm 2002 is connected to the cross beam 2011, and the other end is connected to the welding head 1021.
  • the length direction of the connecting arm is the same as the U-rib welding movement direction.
  • the connecting arm should preferably adopt a structure with higher rigidity.
  • the truss structure consists of profiled steel or steel rods.
  • FIG. 5 shows another preferred structure of the connecting arm.
  • the connecting arm 2002 includes a positioning guide 2012 and a connecting rod 2022.
  • the connecting rod 2022 is a rigid structure.
  • the outer peripheral shape of the positioning guide 2012 is the same as the cross-sectional shape of the U-rib internal cavity, and is trapezoidal.
  • Each connecting arm 2002 has four connecting rods 2022, which are distributed on the four corners of the positioning guide 2012.
  • the connecting arm of this structure has good rigidity, which can improve the fixing effect of the welding head.
  • the shape of the positioning guide plate is the same as that of the U-rib section. The U-rib can be roughly positioned horizontally during assembly and welding, and the positioning is fast and convenient.
  • connection pipeline includes cables, signal control lines, welding wires, auxiliary pipelines, etc.
  • the power supply is used to power the internal welding system, and the connecting pipeline extends from the welding area through the assembly area to the fixed area.
  • One end is connected to the welding head, and the other end is connected to a power supply, a control box, a wire tray or a wire barrel, etc.
  • the power supply, a control box, a wire tray or a wire barrel is provided at one end of the fixed area.
  • the cables, signal control wires, and welding wires are respectively connected to a power source, a control box, a welding wire tray or a welding wire barrel at one end of the fixed area.
  • the connecting arm can also be set as a telescopic structure, which can be adaptively adjusted according to the length of the U rib to meet more needs.
  • connection line of the welding head is set through the fixing device, so that the internal welding machine can perform welding work inside the U-rib.
  • various cables, pipes, welding wires and other pipelines required by the internal welding machine can be arranged in the connecting arm, and some of the pipelines can be arranged in the connecting arm, and some of the pipelines can be arranged outside the connecting arm, or Wire trunking, the pipeline is set by connecting arms and wire trunking.
  • the manufacturing tool of the present invention further includes a gantry 300, which is disposed in the welding area (the welding head is not shown in Fig. 6) and spans above the moving base.
  • the first positioning and locking device 3001 includes a U-rib side pressing mechanism 3021 sandwiched on both sides of the U-rib 2, a U-rib opening stop mechanism 3041 provided on the welding head 1021, a pressing mechanism 3011 on the top of the U-rib 2, and a steel plate. 1bottom tightening mechanism 3031.
  • the U-rib side pressing mechanism 3021 and the U-rib opening limiting mechanism 3041 in the U-rib 2 cavity are pressed together to precisely position the U-rib web.
  • the U-rib side pressing mechanism 3021 can be installed on the gantry 300.
  • the U-rib opening limiting mechanism 3041 may be disposed on the fixing plate 1121 of the welding head 1021.
  • the fixed plate 1121 includes a support pulley 1221 and a side pulley 1321.
  • the support pulley 1221 and the side pulley 1321 are used to support the welding head and ensure the position of the welding gun.
  • the top of the U rib 2 is pressed downward by the pressing mechanism 3011, and the pressing force of the steel plate lower pressing mechanism 3031 is applied to the steel plate 1 upward.
  • the spot welding of the U rib 2 and the steel plate 1 is completed to complete each U-rib 2 and spot welding on both sides of the front end of steel plate 1.
  • the pressing mechanism 3011 may be provided on the gantry.
  • the lower end of the pressing mechanism 3011 is a roller. When compacted, the roller comes into contact with the top of the U-rib 2 to facilitate the U-rib movement.
  • the U-rib side pressure mechanism 3021 and the pressing mechanism 3011 may be driven by a cylinder or a hydraulic pressure, or may be driven by a servo motor.
  • the side where the U-rib side pressure mechanism 3021 contacts the U-rib web is in a wedge shape and can be in close contact with the U-rib web.
  • the jacking mechanism 3031 can be a roller shaft and can rotate. When the jack is tightened, the roller shaft contacts the steel plate 1 to facilitate the movement of the steel plate.
  • the welding manufacturing tool of the present application may further include an external welding system.
  • the outer welding head of the outer welding system is disposed on the gantry 300.
  • the outer welding head has an outer welding gun head.
  • external welding can be performed at the same time.
  • welding is performed on the inside and outside of the U-rib corner seam, and the welding quality is high. Double-sided welding is completed in one process. The production efficiency is high, the welding energy consumption is small, and the workpiece thermal deformation is small.
  • the welding manufacturing tool of the present application is provided with a traction area 1014 after the welding area, and the traction area has a moving base 101.
  • the towing area 1014 also includes a towing vehicle 4001 that moves across the moving base 101 back and forth along the moving base 101. During welding, the tractor 4001 clamps the workpiece and pulls the workpiece forward.
  • the welding manufacturing tool of the present application further includes an auxiliary vehicle 4002, which is disposed in the assembly area 1013.
  • the auxiliary vehicle has its own power to walk back and forth in the U-rib assembly area 1013, and is responsible for pushing the steel plate into place, pushing the U-rib in place, holding the steel plate and the U-rib together to move forward.
  • the auxiliary vehicle 4002 travels in a straight line to prevent the steel plate from swinging.
  • the tractor 4001 can continuously and smoothly pull the front end of the workpiece of the orthotropic plate unit, and the auxiliary vehicle 4002 clamps the steel plate and the U rib at the tail of the orthotropic plate unit. The front end is pulled by a tractor, and the rear end is supported by an auxiliary vehicle.
  • the front and rear two vehicles are driven on the same parallel track, so that the linear movement of the workpiece is not twisted and swung.
  • the tractor 4001 and the auxiliary vehicle 4002 travel within a preset slide rail.
  • the tractor 4001 and the auxiliary vehicle 4002 advance at a certain speed to ensure that the workpiece is welded at the set speed, and the welding quality is stable and reliable.
  • a horizontal positioner for the steel plate is further provided in the assembling area 1013, and the left and right positions of the steel plate workpiece are determined by the positioner, and the longitudinal centerline of the steel plate is adjusted to be parallel to the central axis of the moving base.
  • the steel plate lateral positioner includes a front positioner 5011 and a rear positioner 5021. The front locator 5011 and the rear locator 5021 are arranged side by side and laterally.
  • the front locator 5011 is disposed at the front end of the assembly area 1013, that is, close to the welding area side, and is provided on both sides of the mobile base 101
  • the rear locator 5021 is disposed at the rear end of the assembly area 1013, that is, near the fixed area side, and is disposed in the mobile area. Both sides of the base 101.
  • a steel plate longitudinal limiter and a U-rib limiter are also provided at the front end of the front positioner 5011. The steel plate longitudinal limiter and U-rib limiter are respectively used for longitudinal positioning of the steel plate and U-rib during assembly. When working, the auxiliary vehicle 4002 pushes the steel plate until the front end abuts the steel plate longitudinal limiter.
  • the auxiliary vehicle 4002 pushes the U rib until the front end abuts the U rib limit device.
  • the front locator 5011 and the rear locator 5021 clamp the front end and the rear end of the steel plate 1, respectively, and press them in the middle to realize the centering of the steel plate.
  • the front positioner 5011 and the rear positioner 5021 may be driven by hydraulic pressure.
  • the steel plate enters the assembly area so that the front end of the steel plate is near one end of the welding area and the rear end of the steel plate is near one end of the fixed area; the steel plate is under the connecting arm;
  • the steel plate and the U rib move forward along the longitudinal direction, and the internal welding gun head of the welding zone starts internal welding of the orthotropic plate unit from the front end of the steel plate.
  • the present invention also provides a welding manufacturing line for an orthotropic plate unit.
  • the assembly line includes the welding manufacturing tool for the above-mentioned orthotropic plate unit. It also has a welding preparation area 1010 at the beginning of the assembly line and a moving base 101 at the welding preparation area 1010.
  • the welding preparation area 1010 further includes a welding preparation unit, and the welding preparation unit includes a rust removing and grinding device and a cutting device.
  • the rust-removing and grinding device may be a wire roller or a belt grinder, a grinding wheel, or the like.
  • the rust-removing and grinding device is installed at the upper part of the steel plate preparation area, and is used for cleaning and rust-removing the welding area of the moving steel plate 1 to meet the welding conditions.
  • the left and right sides of the steel plate preparation area are provided with cutting devices for cutting the bevel of the steel plate to be welded.
  • preparation processes such as steel plate cutting, grinding and rust removal can be completed.
  • a steel plate lateral positioner is also provided in the welding preparation area 1010. The steel plate can be driven by the trolley in the welding preparation area, or it can be driven by the driving device of the moving base.
  • the internal welding system further includes a welding head fixing device.
  • the welding head fixing device is disposed in the welding area, and is mainly used to adjust the vertical distance between the welding head 1021 and the moving base 101 and the lateral position of the welding head, and fix the welding head.
  • the welding head 1021 can be fixed and a certain gap can be provided between the welding head 1021 and the moving base 101, thereby facilitating the insertion of the steel plate 1.
  • the welding head fixing device is disconnected from the welding head 1021, and the welding head 1021 is positioned on the steel plate 1.
  • the welding head fixing device is arranged on the gantry 300, one end is fixed to the gantry, the other end is connected to the welding head, and is detachably connected to the welding head.
  • the welding head is fixed in advance by the welding head fixing device, which can facilitate the positioning of the welding head, prevent deformation of the connecting arm, and facilitate the entry of the steel plate.
  • the horizontal position of the welding head on the gantry can be adjusted.
  • the welding head fixing device can be adjusted laterally, so that the welding head can be adjusted and fixed in different positions.
  • the horizontal position of the welding head needs to be fine-tuned because of the U-rib error, This can be achieved by fine adjustment of the welding head.
  • the internal welding system further includes a welding head support device, the welding head support device is disposed in a welding area, the welding head support device is disposed under a moving base, and the welding head support device may be in a vertical direction
  • the upper telescopic when the internal welding is about to be completed, when the welding head is exposed from the rear end of the steel plate, the welding head support device is extended, the top exceeds the height of the moving base, and contacts the bottom of the welding head to support the welding head.
  • the welding head support device can be a hydraulic cylinder that can be moved up and down. With this welding head support device, when the welding head is about to be completed, the welding head part protrudes from the rear end of the steel plate to ensure the stability of the welding head, thereby preventing The welding gun deviates to ensure the welding quality.
  • connection between the connecting arm and the fixed frame can adopt a movable connection, that is, there is a degree of freedom between the connecting arm and the fixed frame.
  • the connecting arm can rotate around the beam of the fixed frame. This facilitates the lifting and adjustment of the welding head fixing device to the welding head.
  • there is a slide plate on the beam In order to facilitate lateral adjustment and adapt to U-rib welding at different intervals, there is a slide plate on the beam. The slide plate can be moved laterally along the beam. One end of the connecting arm is connected to the slide plate and the other end is connected to the welding head. The lateral distance can be adjusted through the skateboard, and the lateral distance of the connecting arm can be adjusted to adapt to U-rib welding with different distances.
  • the slide plate can adjust the lateral position of the internal welding system simultaneously with the welding head fixing device.
  • the second embodiment of the fixing device does not use a rigid connecting arm, and replaces the connecting arm with a flexible connecting device, such as a connecting wire.
  • the fixing device includes a fixing frame and a connecting line.
  • the fixing frame is arranged in a fixed area.
  • the fixing frame is relatively fixed to the ground.
  • the length of the connecting line is the same as the welding movement direction.
  • One end of the connecting line is connected to the fixing frame and the other end is connected to the welding.
  • the fixing frame has a cross beam, one end of the connection line is connected to the cross beam, and the other end is connected to the welding head.
  • the length of the connecting line is greater than the length of the U-rib.
  • the function of the connecting line is mainly to play a role of longitudinal limit.
  • the connecting line is not extendable in the length direction, so the longest distance between the welding head and the fixed frame can be limited, and the welding head can be positioned longitudinally. Prevent the welding head from moving with the orthotropic plate unit during welding.
  • the flexible connection device and each connection pipeline of the welding head can be set through pipelines, and various cables, pipes, welding wires and other pipelines required by the internal welding machine can be arranged in the flexible pipe.
  • the flexible pipe supplies power for the internal welding machine to ensure the welding conditions of the internal welding machine, so that the internal welding machine can perform welding work inside the U rib.
  • the function of the pipeline is to centralize the connecting pipelines together so that they can be neatly arranged without winding, which facilitates the steel plate to enter the mobile base and U-rib assembly.
  • the internal welding system also includes the welding head fixing device in the above embodiment.
  • the rigid connecting arm in the first embodiment of the fixing device may also be a flexible rod or a flexible tube, as long as the flexible rod or the flexible tube has less deformation in the length direction and can limit the longitudinal position of the welding head.
  • the welding manufacturing method of the assembly line orthotropic plate unit 100 of the present application is:
  • Steel plate 1 enters the welding preparation area 1010 at the beginning of the assembly line.
  • the length direction of the steel plate is consistent with the assembly line direction.
  • the steel plate moves forward or back and forth to complete the welding preparation work.
  • the front end of the steel plate 1 passes through the fixed area 1011 and enters the assembly area 1013;
  • the steel plate 1 travels along the assembly line to the rear end of the steel plate and passes through the fixed area 1011;
  • the U rib 2 is hoisted to the steel plate 1, and the U rib 2 is assembled with the steel plate 1;
  • the steel plate 1 and the U rib 2 continue to move forward, and the inner welding torch head starts to weld the steel plate 1 and the U rib 2 from the front end of the steel plate 1.
  • the steel bridge panel workpiece that is, steel plate 1
  • the length direction of the steel plate is consistent with the assembly line direction.
  • the steel plate lateral positioner in the welding preparation area controls the width direction of the steel plate.
  • the trolley drives the steel plate workpiece forward or reciprocating along the assembly line, and the steel plate is rusted and descaled by the rust removal and grinding device when the steel plate advances or reciprocates until it meets the welding and other process requirements, and then the steel plate 1 is transported to the U-rib assembly area 1013 along the assembly line. .
  • the steel plate 1 moves forward, the steel plate 1 is inserted from below the crossbeam 2011, the front end passes through the fixed area 1011 and enters the assembly area 1013, and continues along the assembly line direction until the rear end of the steel plate passes the fixed area 1011.
  • the steel plate 1 completely enters the U-rib assembly area 1013, and the auxiliary trolley 4002 pushes the steel plate 1 until the front end of the steel plate 1 comes into contact with the longitudinal stop of the steel plate and stops.
  • the steel plate 1 is located below the connecting pipeline and also under the connecting arm 2002 or the pipeline, that is, between the connecting arm 2002 / pipe and the moving base 101.
  • the front locator 5011 and the rear locator 5021 clamp the two sides of the steel plate 1 at the front and rear ends of the steel plate 1, respectively, and press them in the middle to realize the horizontal centering of the steel plate.
  • a lifting device to lift the U rib to the steel plate.
  • several U-ribs can be hoisted one by one from the top to the bottom or placed at the same time using a tooling, and each U-rib opening is aligned downward to the connection arm 2002 or the pipe is dropped onto the steel plate 1 to fasten the connection pipeline.
  • the auxiliary vehicle 4002 moves each U-rib forward at the rear end of the U-rib 2 so that the front end of the U-rib contacts the U-rib stop device and terminates. At this time, the mutual position of the steel plate 1 and the U-rib 2 has been initially determined, and the steel plate and the U-rib are completed. Assembly. Specifically, when the connecting arm is used, the outer shape of the positioning guide plate is the same as the cross-sectional shape of the inner cavity of the U-rib, and the U-rib can be roughly positioned laterally during assembly, and the positioning is fast and convenient. No need to manually mark the positioning.
  • Auxiliary car 4002 clamps the steel plate and U-rib workpiece at the tail of the workpiece. At this time, the longitudinal stop of the steel plate and the U-rib stop device are disengaged. Welding zone 1012.
  • the U-rib side pressing mechanism 3021 and the U-rib opening limiting mechanism in the U-rib 2 cavity are used to squeeze the U-rib web plate accurately inside and outside.
  • the top of the U rib 2 is pressed downward by the pressing mechanism 3011, and the pressing force of the steel plate lower pressing mechanism 3031 is applied to the steel plate 1 upward.
  • the spot welding of the U rib 2 and the steel plate 1 is completed to complete the steel plate and Spot welding on both sides of the front end of each U-rib 2. After completing spot welding on both sides of the front end of each U-rib, fix the workpiece to the tractor 4001.
  • the front end of the workpiece is pulled by the tractor 4001, and the rear end is supported by the auxiliary vehicle 4002.
  • the tractor 4001 and the auxiliary vehicle 4002 travel and drive on the same parallel track, ensuring that the linear motion of the workpiece does not distort and swing.
  • the size and positional relationship of each U rib is accurate.
  • Tractor 4001 continuously and smoothly pulls the workpiece forward, while the workpiece is walking, each internal welding torch is continuously welded, or welding is synchronized with the outer welding, depending on the requirements of the board unit.
  • the welding gun head welds the steel plate 1 and the U rib 2 from the front end of the workpiece until the rear end passes through the welding area.
  • the welded orthotropic plate unit 100 workpiece enters the traction area, the workpiece is moved to the assembly line platform, and the tractor 4001 quickly returns to the gantry to repeat the foregoing process.
  • the welding preparation area may also be set beside the mobile base, and the steel plate enters the assembly area from the side of the mobile base.
  • the steel plate moves laterally into the assembly area.
  • a lateral slide rail can be provided on the moving base to facilitate the steel plate to slide on the moving base.
  • the front end of the steel plate is on the side of the welding area, and the rear end of the steel plate is on the side of the fixed area. After the steel plate is removed from the welding preparation area, the steel plate is moved laterally into the assembly area until one side reaches the side limit device.
  • weld inspection is divided into three parts: appearance quality, internal flaw detection, and mechanical properties.
  • the appearance quality of the weld has an important effect on fatigue performance. There are no cracks, undercuts, pores, no welding slag, no slag inclusion, and smooth forming of the weld surface.
  • Internal flaw detection uses ultrasonic testing. Mechanical properties, fillet welds generally do not require mechanical properties, and the problems of low toughness and super strength matching and high yield ratio of the weld are prominent.
  • the present invention proposes "equal strength, equal toughness, equal life” and gives the corresponding indicators testing method.
  • the U-rib welding that meets the above inspection requirements has effectively controlled the fatigue performance and truly achieved the goal of "full penetration, detectable and defect-free".
  • tack welding can be performed before internal welding. That is, the workpiece is intermittently walked and stopped for tack welding. After the tack welding is completed, the front end of the workpiece is returned to the welding area to start internal welding or simultaneous internal and external welding. Specifically, when the workpiece is walking, the U-rib side pressure mechanism 3021 is released. When the workpiece stops, the U-rib 2 is pressed down by the pressing mechanism 3011 on the top of the U-rib 2 and the steel plate lower pressing mechanism 3031 exerts a pressing force on the steel plate 1 upward.
  • the rib side pressure mechanism 3021 and the U rib opening limiting mechanism in the U rib 2 cavity jointly press the U rib webs inside and outside to accurately position the U rib ribs.
  • the U ribs are spot-welded and fixed. Repeat the above operation at intervals.
  • the welding interval is generally 300mm-500mm, and the spot welding length is 30mm-80mm. Since the pressing mechanism 3011 and the jacking mechanism 3031 function, the spot welding distance and the spot welding length can be relaxed without requiring strict restrictions, depending on the condition of the workpiece. set. After the spot welding is completed, the tractor 4001 quickly drives the workpiece back to the welding preparation position, that is, the front end of the workpiece is aligned with the welding torch.
  • the workpiece that has been spot welded does not need to start the gantry U-rib side pressure mechanism 3021, only the tractor 4001 is required to pull the workpiece At the same time welding.
  • the positioned orthotropic plate unit is reversely translated from the traction area into the assembly area until the front end of the steel plate reaches the welding area, and the internal welding gun head is placed in the abdominal cavity of the front end of the U rib.
  • the U-ribs of the anisotropic plate unit are internally welded. The welding is completed until the back end passes through the welding area.
  • the steel plate of the invention first enters the assembly area, and then the U-rib assembly is performed, and the rough positioning is performed during assembly. After the assembly is completed, the welding area is accurately positioned and simultaneously welded, and the assembly welding is performed simultaneously. In view of the large errors in the shape and size of U ribs, tack welding is performed before internal welding, and after completion of tack welding, it is returned to the assembly area in reverse, and then internal and external fillet welding is performed on the workpiece.
  • the invention completes the welding of the workpiece steel plate and the U-rib parts of the workpiece to the plate unit.
  • the traditional rust removal and sanding, scribing, positioning group butt, internal welding and external welding are turned into one line in one line, which greatly saves Site, labor, and energy consumption ensure quality and increase work efficiency by more than three times.
  • U-ribs are preferably hot-rolled.
  • the material of the hot-rolled U-ribs is uniform.
  • a groove is opened at the lower end of the U-rib side web.
  • Traditional cold-pressed bending U-ribs have plastic deformation in the two arc bending areas, the material becomes hard and brittle, and fatigue cracks are easy to occur if the surface is scratched or overheated.
  • Hot-rolled U-ribs completely solve this problem, and make the thickness of U-rib steel plate achieve the ideal variable cross-section design requirements.
  • submerged arc welding is preferably used.
  • the solder is pre-packed into a container, as shown in FIG. 3, which is a solder hopper. 1024, in the hopper bin 1024 along the length of the weld along the left and right sides of the lower part of the leak hole is set, the leak hole is opened to lay flux.
  • a 1.6-3.2mm diameter submerged arc welding process is used for welding at the outer corners of the U ribs.
  • the outer fillet meat and the inner fillet meat intersect to achieve full penetration, or
  • the internal and external welding angle dimensions are approximately symmetrical, and the welding meat is the weld metal.
  • the inner fillet welding gun is welded at the same time with the corresponding outer fillet welding gun with a distance of 0-200mm.
  • the submerged arc welding process parameters are: internal welding, wire diameter 1.6mm, current 350A-450A, voltage 29V-33V, welding speed 450-550mm / min; external welding, wire diameter 1.6-3.2mm, current 400A-650A, voltage 29V-35V, welding speed 450-650mm / min.
  • the U-rib groove to be welded is a natural groove.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)

Abstract

L'invention concerne un outil de fabrication destiné à souder une nervure en forme de U d'une unité de plaque orthotrope (100). L'invention comprend : une ligne d'assemblage présentant une base mobile (101), la base mobile étant pourvue séquentiellement, dans la direction dans laquelle la ligne d'assemblage se déplace, d'une zone de préparation de soudage (1010), d'une zone de fixation (1011), d'une zone d'assemblage (1013), d'une zone de soudage (1012) et d'une zone de traction (1014), la zone d'assemblage étant située entre la zone de fixation et la zone de soudage. Une plaque d'acier entre dans la zone de préparation de soudage, et un dispositif d'élimination de rouille et de polissage effectue une élimination de rouille et un polissage sur une zone à souder de la plaque d'acier ; une extrémité avant de la plaque d'acier entre dans la base mobile à partir d'une extrémité de la zone de fixation, et la plaque d'acier se déplace longitudinalement vers l'avant jusqu'à ce qu'une extrémité arrière de la plaque d'acier passe à travers la zone de fixation ; après que la totalité de la plaque d'acier entre dans la zone d'assemblage, une nervure en forme de U est hissée sur la plaque d'acier, et la nervure en forme de U et la plaque d'acier sont assemblées ; et la plaque d'acier et la nervure en forme de U se déplacent ensemble longitudinalement vers l'avant, et une tête de pistolet de soudage interne effectue, à partir de l'extrémité avant de la plaque d'acier, un soudage interne destiné à l'unité de plaque orthotrope. L'outil améliore considérablement l'efficacité de production de l'unité de plaque de nervure en forme de U, réalise un soudage à pénétration complète, améliore la qualité de soudage et résout efficacement un endommagement par fatigue d'une plaque de tablier de pont d'acier. L'invention concerne en outre une ligne d'assemblage destinée à fabriquer une unité de plaque orthotrope et un procédé destiné au soudage d'une nervure en forme de U d'une unité de plaque orthotrope.
PCT/CN2019/088579 2018-05-28 2019-05-27 Outil de fabrication permettant de souder une nervure en forme de u d'une unité de plaque orthotrope, et ligne d'assemblage et procédé WO2019228304A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201810524874.5A CN108747078A (zh) 2018-05-28 2018-05-28 一种正交异性板单元u肋焊接制造工装、流水线及方法
CN201820802096.7U CN208483393U (zh) 2018-05-28 2018-05-28 一种正交异性板单元u肋焊接制造工装及流水线
CN201820802096.7 2018-05-28
CN201810524874.5 2018-05-28

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