WO2009151100A1 - Tack welding fixture, tack welding equipment, and welding equipment for bridge girder structure - Google Patents
Tack welding fixture, tack welding equipment, and welding equipment for bridge girder structure Download PDFInfo
- Publication number
- WO2009151100A1 WO2009151100A1 PCT/JP2009/060706 JP2009060706W WO2009151100A1 WO 2009151100 A1 WO2009151100 A1 WO 2009151100A1 JP 2009060706 W JP2009060706 W JP 2009060706W WO 2009151100 A1 WO2009151100 A1 WO 2009151100A1
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- WIPO (PCT)
- Prior art keywords
- welding
- area
- transfer path
- portal frame
- temporary
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
Definitions
- the present invention relates to a jig used for temporary welding of a welded structure in which a bridge girder is constructed by being assembled in a factory and connected on site (hereinafter referred to as “bridge girder structure”), and the jig Including temporary welding equipment and welding equipment.
- the jig is a jig for holding a steel plate, which is a material at the time of temporary welding when assembling a steel plate cut into a predetermined shape into a box girder or a girder, in a predetermined positional relationship.
- the bridge girder has a structure called a box girder and a structure called a girder.
- the box girder has a rectangular cross section formed by upper and lower plates 8 and 6 and two side plates 7, and has a longitudinal direction (the longitudinal direction of the transfer path, hereinafter the same). ) Are provided with two to three partition walls (diaphragms) 9 that define the cross-sectional shape at predetermined intervals.
- the girder is formed in a cross-section I shape by connecting the width centers of upper and lower plates (upper flange and lower flange) 8, 6 with a single web 7.
- a girder structure that is easy to manufacture has been used in many cases.
- the number of bridge girder with a mechanically superior box girder structure increases.
- Bridge girder structures are about 15m long, and the width and height of several large ones are several meters. Therefore, several overhead cranes can be used to hold the steel plates assembled during temporary welding in place. A large number of workers are required, such as tightening steel plates using a large number of fasteners. In addition, there is a risk that the side plate and the web will fall down and a serious accident will occur.
- the applicant of the present application has proposed a temporary welding jig for a girder structure in Japanese Patent Publication No. 2002-363919, and the girder structure can be temporarily used by a small number of people by using this jig. Welding work has become possible, but with regard to box girders, many workers are still performing temporary welding work.
- the applicant of the present application has proposed a temporary welding jig for a crane girder having a box girder structure in Japanese Utility Model Publication No. 49190, 1993.
- the box girder for the bridge has a larger cross-sectional dimension than that of the crane girder, and the cross-sectional dimension greatly differs for each site, so the structure of the temporary welding jig proposed in the above-mentioned utility model publication is as follows: It is difficult to adopt as a temporary welding jig for box girder structures for bridges.
- the present invention provides a jig that can be used for temporary welding of a main girder structure for a bridge by a small number of workers and also for temporary welding of a girder structure. And provision of provisional welding equipment including the jig.
- the present invention provides a temporary welding for fixing the positional relationship of the steel plates constituting the bridge girder structure, and then performing an additional temporary welding process by manual work, a subsequent manual work or a book by a welding robot.
- Provide welding equipment that enables efficient welding assembly by reducing the transfer time between processes and wasteful waiting time when transferring the entire girder structure by sequentially transferring to the welding process. It is an issue.
- an elongated transfer path 1 is formed by a large number of transfer rollers 11 arranged in parallel, and along this transfer path, a material carry-in area A, an assembling apparatus 16, a temporary welding apparatus 12, an additional temporary welding area B, and A main welding area C is provided.
- the many transfer rollers 11 include an electric motor 59 that drives each roller independently or collectively.
- Each of the material carry-in area A, the additional temporary welding area B, and the main welding area C has the maximum length of the bridge girder structure to be assembled. Generally, it is about 15 m.
- the temporary welding device 12 is disposed between the material carry-in area A and the additional temporary welding area B.
- the assembly device 16 is disposed at the end of the material carry-in area A on the anti-temporary welding device side.
- the assembly device 16 and the temporary welding device 12 include a portal frame 4 that straddles the transfer path 1.
- Temporary welding for fixing the positional relationship between the materials (steel plates) when the material carried into the material carry-in area A passes through the portal frame 4 of the temporary welding device 12 to the additional temporary welding area B. Is done.
- an anti-falling device 2 that prevents the steel plates placed upright, such as the side plates on both sides of the box girder and the web of the girder, from falling down. .) They are arranged on the assembly device 16 side and the temporary welding device 12 side as a pair on both sides.
- the pair of anti-falling devices includes a pair of left and right (both sides in the width direction of the transfer path) pair of anti-falling carriages 21 that run on the rails 22 provided in the width direction of the transfer path, and poles 25 erected from the respective carriages, A plurality of support arms 26 extending from the pole to the inside of the transfer path are provided.
- the anti-tilt carriage 21 includes a motor with a gear reducer with a brake (hereinafter simply referred to as “brake motor”) 24 that drives the wheels 23.
- the pole 25 needs to have a certain height due to the need to prevent the side plate and the web from falling down.
- the pole 25 has a structure that can be tilted around an axis parallel to the transfer roller 11 at a position substantially at the height of the transfer path 1 so as not to obstruct material transfer onto the material transfer area A.
- the raising / lowering device (hydraulic cylinder) 27 is provided.
- the push-up carriage 31 includes a brake motor 34 that drives the wheels 33.
- a lifting device (hydraulic cylinder) 35 for pressing the lower plate against the partition wall, the side plate, or the lower edge of the web is mounted at the center of each lifting carriage 31.
- side plates and webs are cut into a shape that is slightly middle and high so that the bridge girder is horizontal when bent by its own weight or the weight of the traveling vehicle. Therefore, in order to bring the lower plate into close contact with the partition wall, the side plate, or the web, it is necessary to push up the lower plate.
- the beam (upper girder) 4a of the portal frame 4 of the assembling apparatus 16 and the temporary welding apparatus 12 is provided with a rail 42 in the width direction, and a pair of left and right presser carriages 41 that run along the rail are provided. .
- the presser carriage 41 includes a brake motor 44 that drives the wheels 43.
- a presser device (hydraulic cylinder) 45 for pressing the upper plate against the partition wall, the side plate, or the upper edge of the web is mounted at the center of the presser carriage 41.
- the presser carriage 41 includes a reaction force receiving plate 47 that contacts the lower surface of the beam 4 a and prevents the presser carriage 41 from being lifted.
- the column 4b on both sides of the portal frame 4 is provided with an elevating guide 52, and an elevating platform 51 that elevates and lowers along the elevating guide and an elevating drive device 54 are provided.
- a lateral presser device (hydraulic cylinder) 55 including a member (piston rod) 56 that moves forward and backward toward the inside of the portal frame 4 is mounted on the lifting platform 51.
- the lateral pressing device 55 advances the member 56 and presses the side plate of the box girder structure against the side edge of the partition wall.
- the position of the web is defined by sandwiching the web from both sides with the lateral holding device 55.
- a well-known copying welding device 17 is mounted on the upper and lower sides of the temporary welding device 12 in the width direction.
- This copying welding apparatus is for temporarily welding the side plate 7 and the upper plate 8 and the lower plate 6 of the box girder structure, or for temporarily welding the web 7 of the girder structure and the upper and lower flanges 8 and 6. is there.
- a reversing machine 14 is disposed for turning the structure temporarily welded by 90 degrees in order to perform the main welding by downward welding.
- the reversing machine 14 is movable on the transfer path 1 and moves to a retreat base 61 provided on one side of the transfer path 1 in the direction perpendicular to the longitudinal direction thereof, so that the structure is brought into the material carry-in area A or the additional temporary welding area B.
- a welding carriage 18 and a lifting carriage 19 are provided so as to be movable along the transfer path 1.
- the welding carriage 18 is provided with a lifting work platform 94 on both sides in the width direction, and a loading platform 64 on which a welding power supply device, a welding gas cylinder, and the like are mounted.
- a lifting device 65 such as an electric chain block, is provided at the upper part on both sides in the width direction of the welding carriage 18 and the lifting carriage 19.
- the steel plate used as the material of the bridge girder structure is carried into the material carry-in area A with a crane while the pole 25 is tilted and the assembly device 16 is retracted to the longitudinal end of the transfer path 1.
- the lower plate of the bridge girder structure is placed flat on the transfer path 1, and in the box girder structure, the partition wall is suspended on the lower plate by a crane and temporarily welded manually.
- the side plate and the web are suspended while standing on the lower plate.
- the pole 25 is erected, travels on the carriage 21, and advances the tip of the support arm 26 to a position close to the side plate or web, thereby preventing the side plate or web from falling.
- the partition wall temporarily welded to the lower plate prevents the side plate from falling down.
- the upper plate is hung down on the side plate and the web that are prevented from falling down.
- the assembly device 16 and the suspended material are moved to the temporary welding device side, both ends of the material are inserted into the assembly device 16 and the portal frame 4 of the temporary welding device, and the lifting device 35 and the presser device are inserted.
- the positional relationship between the materials suspended in the material carry-in area A is fixed by 45 and the side presser 55.
- the large steel plate used as the material for the bridge girder structure is bent. For this reason, when the upper and lower plates and the side plates are applied to the edge of the partition wall, a close contact portion and a gap can be formed. Therefore, the welding device 35, the presser device 45, and the side presser device 55 of the temporary welding device 12 are moved to a place where a gap is formed, and the upper and lower plates and the side plates are pressed against the partition wall at the corresponding position, followed by copying welding.
- the side plate and the upper and lower plates (web and upper and lower flanges in the case of a girder), the partition wall and the side plate are temporarily welded by the device 17.
- the lifting carriage 31 or the holding carriage 41 is moved so that the lifting device 35 or the holding device 45 comes to the position of the side plate.
- the structure is sent by the transfer roller 11 so that the push-up device 35 and the presser device 45 come to a position where there is a gap between the edge of the side plate and the upper plate and the lower plate are brought into close contact with the edge of the side plate. Weld.
- the material carried into the material carry-in area A is intermittently sent by the transfer roller 11 while passing through the temporary welding device 12 and is sequentially subjected to temporary welding, and the positions of the latter half constituting the structure are fixed. .
- the operator performs additional temporary welding manually as necessary. Thereby, the mutual position is fixed by the intensity
- the temporarily welded material (temporary structure) is transferred to the main welding area C by the rotational driving of the transfer roller 11 with the reversing machine 14 on the carry-in side retracted to the side of the transfer path.
- the material transferred to the main welding area C is lifted by the lifting device 65 of the welding carriage 18 and the lifting carriage 19, the reversing machines 14 on both sides are moved in the approaching direction, and the longitudinal ends of the temporary attachment structure are reversed on both sides. It is held by a claw 86 of the machine and rotated to a position where the side plate or web is horizontal.
- one side (upper) side plate and upper and lower plates or one side (upper surface) of the web and the upper and lower flanges are finally welded manually by an operator on the lifting work table 94 and reversed 180 degrees by the reversing machine 14. Then, the opposite side plate and the upper and lower plates or the opposite surface of the web and the upper and lower flanges are finally welded in the same manner.
- the main welding of the partition wall, both side plates, the lower plate, and the upper plate is performed by downward welding while rotating 90 degrees by the reversing machine 14.
- accessory welding area D accessories such as joints and mounting plates are positioned and welded to the welded bridge girder structure manually.
- the bridge girder structure for which the main welding has been completed is carried from the main welding area C or the small article welding area D by being lifted by a crane.
- a temporary welding jig for a bridge girder structure according to the invention of claim 1 of the present application is an elongate transfer for transferring a bridge girder structure and its material from a material carry-in area A to an additional temporary welding area B or a main welding area C in the longitudinal direction. It is carried in the state where it stands in the material carrying area A and the portal frame 4 which straddles the conveying path 1 in the width direction between the road 1, the material carrying area A and the additional temporary welding area B or the main welding area C.
- a tiltable fall-preventing device 2 that supports the material, a push-up device 35 that is disposed below the transfer path 1 at the installation position of the gate-shaped frame 4, moves in the width direction, and appears and disappears in the transfer path 1,
- a pair or a plurality of pairs of lateral pressing devices 55 provided on the columns 4b on both sides of the frame 4 and extending toward the inside of the frame, and moving in the width direction along the beam 4a of the portal frame 4 and extending downward.
- presser device 45 It has a temporary weld fixture bridge girder structure.
- the temporary welding jig for the bridge girder structure according to the invention of claim 2 of the present application is formed by a large number of transfer rollers 11, and the bridge girder structure and its material are added from the material carry-in area A to the additional temporary welding area B to the main welding.
- a material (side plate or web) 7 that is provided at a position close to and apart from the portal frame 4 in the material carry-in area A and is stood in the material carry-in area A
- a pair of push-down devices that are arranged below the transfer path of the temporary welding device 12 and move individually in the width direction and appear in and out of the transfer path 1.
- Raising device 35 and portal frame 4 laterally moving along the columns 4b on both sides of the frame 4 and extending toward the inside of the frame 4, and individually moving in the width direction along the beam 4a of the portal frame A and extending downward.
- the temporary welding jig according to the invention of claim 3 of the present application is the temporary welding jig of the bridge girder structure according to the invention of claim 2, wherein the push-up device 35 is mounted on the rail 32 parallel to the transfer roller 11. It is an upward cylinder mounted on a pair of left and right push-up carriages 31 that travel, and the upper presser device 45 is a pair of left and right wheels that travel on a rail 42 provided in parallel to the transfer roller 11 on the beam 4a of the portal frame 4.
- a temporary welding jig for a bridge girder structure which is a downward cylinder mounted on the presser carriage 41.
- a temporary welding jig according to a fourth aspect of the present invention is the temporary welding jig for a bridge girder structure according to the second or third aspect of the invention, wherein the lateral holding device 55 is provided on both sides of the portal frame 4.
- This is a temporary welding jig for a bridge girder structure which is a horizontal cylinder which is guided by a vertical elevating guide 52 provided in the column 4b.
- a temporary welding device 12 for fixing the positions of the materials is provided between the material carry-in area A and the additional temporary welding area B of the transfer path 1 for transferring the material or the temporary welding structure, and the material is fed. Since temporary welding is performed, waste of transfer time can be saved. Moreover, since the temporary welding can be performed in a state where the end portion of the material temporarily welded by the temporary welding device 12 is fixed by the assembling device 16, the temporary welding can be performed by accurately assembling the materials. It can be carried out.
- the material carry-in area A, the additional temporary welding area B, the main welding area C, and the accessory welding area D are independent of each other, so that each process can be performed independently.
- the amount of welding work to be performed in each process, the number of workers to be input, the equipment to be used, etc. can be determined so that the work time in each process is almost uniform. Latency can be minimized.
- FIGS. 1 and 2 are a plan view and a side view showing the whole welding equipment, and an elongated transfer path 1 for transferring a bridge girder structure and its material is formed by a number of transfer rollers 11 arranged in parallel.
- the height of the transfer path 1 is about 1 m from the floor surface.
- the total length of the transfer path 1 is about 50 m, and four work areas, a material carry-in area A, an additional temporary welding area B, a main welding area C, and an accessory welding area D, are set from the upstream side in the transfer direction.
- Travel rails 71 are arranged on both sides in the width direction of the transfer path 1 in parallel with the transfer path 1.
- An outer rail 72 is arranged on the outer side of the traveling rail 71 in the main welding area C and the accessory welding area D.
- the assembly device 16 is arranged at the end of the material carry-in area A, and the temporary welding device 12 is arranged between the material carry-in area A and the additional temporary welding area B.
- a pair of opposing reversing machines 14 are arranged at both longitudinal ends of the main welding area C and the accessory welding area D, respectively, and a lifting carriage 19 is arranged at an intermediate position.
- a welding carriage 18 is disposed in the main welding area C.
- the assembling device 16, the temporary welding device 12, and the reversing machine 14 include wheels 73 that roll on the traveling rail 71 and can travel along the transfer path 1.
- the lifting carriage 19 and the welding carriage 18 include wheels 74 that roll on the outer rail 72, and can travel along the transfer path 1 in the same manner.
- the reversing machine 14 can be further moved from the transfer path 1 by moving on a retreat base 61 provided on one side of the transfer path 1 in a direction orthogonal to the transfer path 1.
- FIG. 3 is a front view showing the support structure for the transfer roller 11 provided in the transfer path 1 (view of the transfer path from the upstream side).
- the transfer roller 11 is pivotally supported at both ends by the roller base 15 and is driven by a drive motor 59 provided for each transfer roller 11 individually.
- a controller (not shown) synchronously drives only the transfer roller in the portion where the material or structure is mounted.
- traveling rails 71 extending in a direction perpendicular to the drawing are fixedly provided on the roller base 15.
- FIG. 6 is a view showing the assembling apparatus 16
- FIG. 7 is a view showing the temporary welding apparatus 12
- FIG. 8 is a view showing a push-up carriage provided under the transfer path in the lower part of these apparatuses.
- the assembly apparatus 16 and the temporary welding apparatus 12 are different only in that the temporary welding apparatus 12 includes a copying welding apparatus 17 and the others are the same. Therefore, only the temporary welding apparatus in FIG. 7 will be described, and FIG. About the assembly apparatus, the description is abbreviate
- the push-up carriage 31 includes a brake motor 34 that drives the wheels 33.
- the push-up carriage 31 is mounted with a hydraulic cylinder (push-up device) 35 with a rod 36 facing upward at the center thereof.
- the push-up cylinder 35 is provided at such a height that the tip of the rod 36 is positioned below the transfer path 1 when retracted and positioned above the transfer path 1 when extended.
- the temporary welding device 12 includes a portal frame 4 straddling the transfer path 1, and a wheel 73 that rolls on the traveling rail 71 is pivotally supported at the lower end of the leg.
- the wheels 73 on each side are synchronously driven by a brake motor 75 provided on each side.
- the beam 4 a of the portal frame is provided with a rail 42 in the width direction, and left and right press carriages 41 are mounted on the rail 42.
- the wheel 43 of the press carriage is driven by a brake motor 44 mounted on each carriage.
- a presser cylinder 45 with a rod 46 facing downward is mounted on the presser carriage 41.
- the presser carriage 41 has a reaction force receiving plate 47 for preventing the presser carriage 41 from being lifted by a reaction force when the upper plate is pushed by the presser cylinder 45, and a slight gap is formed between the lower surface of the beam 4a. It is provided in the state left.
- the column 4b on both sides of the portal frame is provided with a vertical lifting guide 52, and a lifting platform 51 that moves up and down along the lifting guide is mounted.
- the lifting platform 51 is connected to a chain 53 that is connected to the electric chain block 54 and is suspended from above, and moves up and down along the lifting guide 52 by forward and reverse rotation of the electric chain block 54.
- a horizontal presser cylinder 55 that extends horizontally toward the inside of the transfer path is mounted on the lifting platform 51. By extending the rod 56 of the side presser cylinder 55, the side plate of the box girder structure is pressed against the side edge of the partition wall, and the web of the girder structure is sandwiched between the rods on both sides in the width direction. Holds the position.
- the lifting platform 51 is provided with a work table 57.
- the side plate 7 and the upper plate 8 and the lower plate 6 of the box girder structure are temporarily welded on the upper and lower sides in the width direction of the temporary welding device 12, or the web 7 of the girder structure and the upper and lower flanges 8 and 6 are temporarily mounted.
- a copy welding device 17 for welding is mounted.
- the scanning welding device 17 detects a contact portion between the side plate or the web 7 and the upper plate 8 and the lower plate 6 with a probe member or a laser beam and moves it along the contact portion where the welding torch is detected. Weld.
- the copying apparatus is not provided in the assembling apparatus 16 of FIG.
- each reversing machine 14 includes four wheels 73 on the lower end of the frame 81, which are front, rear, left and right, rolling on the traveling rail 71, and brakes that drive these wheels synchronously.
- a motor 75 is provided.
- Each reversing machine 14 includes a support plate 82 that is rotatably supported around an axis parallel to the transfer path 1, and a brake motor 84 that rotates the support plate via a gear pair 83.
- a large number of mounting holes 85 are provided in the support plate 82 so that the support claws 86 that support the bridge girder structure can be fixed at appropriate positions in accordance with the cross-sectional shape and dimensions of the bridge girder structure to be manufactured. .
- each reversing machine 14 At the home position of each reversing machine 14, there is provided a retracting base 61 that is elongated in the width direction and extends to one side in the width direction of the transfer path 1 at the front and rear wheels 73 located at the home position.
- Each evacuation stand is provided with a evacuation carriage 62 that reciprocates in the width direction of the transfer path 1 and a brake motor 66 for the reciprocation.
- a rail piece that is a part of the traveling rail 71 is fixed to each retreating carriage 62, and when the retreating carriage 62 moves to the transfer path 1 side, this rail piece becomes the original position of the traveling rail 71.
- the front and rear wheels 73 are positioned on the respective rail pieces.
- the welding carriage 18 includes a gate-shaped frame 91 having a size that allows the reversing machine 14 to pass inside.
- a wheel 74 that rolls on an outer rail 72 disposed outside the traveling rail 71 and a brake motor 75 that synchronously drives the wheels 74 on both sides are attached to the lower ends of the legs of the gate-shaped frame 91.
- the columns 92 on both sides of the gate-shaped frame 91 are provided with vertical lifting guides 93, and a lifting work table 94 that moves up and down along the lifting guides is provided.
- the elevating work table 94 is connected to the chain 96 that is connected to the electric chain block 95 at the upper end and hangs from above, and moves up and down along the elevating guide 93 by forward and reverse rotation of the electric chain block 95.
- a loading platform 64 on which a welding power supply device, a welding gas cylinder and the like are mounted is provided on the upper part of the beam 91a of the gate-shaped frame 91. Further, lifting devices 65 such as an electric chain block are provided on both sides of the beam 91a.
- the lifting trolley 19 includes a tower-shaped frame 77 that is large enough to allow the reversing machine 14 to pass inside.
- a wheel 74 that rolls on the outer rail 72 arranged outside the traveling rail 71 and a brake motor 75 that synchronously drives the wheels 74 on both sides are attached to the lower ends of the legs of the tower-shaped frame 77.
- a lifting device 65 such as an electric chain block is provided on both upper side portions of the tower-shaped frame 77.
- the wire turned under the welded structure is hung on the hooks of the lifting devices 65 on both sides. Then, the lifting device 65 is driven to lift.
- the welded structure in the main welding area C is lifted at two locations: the position of the lifting device 65 of the welding carriage 18 and the position of the lifting device 65 of the lifting carriage on the main welding area C side.
- the welded structure in the accessory welding area D is lifted by two lifting devices 65.
- the lifting device 65 on the main welding area C side exceeds the two reversing machines 14 disposed between the main welding area C and the small article welding area D, and the main welding area C and the small article welding area. You can go back and forth between D. Further, when necessary, the welding carriage 18 is moved to the accessory welding area D so that an operator who has boarded the welding carriage 18 can perform the welding operation of the accessory.
- the material carry-in area A is provided with a pair of anti-falling devices 2 that face each other across the transfer path 1 at a position close to the temporary welding device 12 and a position close to the assembly device 16.
- a detachable fall prevention device 2a is arranged in the additional temporary welding area B.
- the additional anti-falling device 2a in the temporary welding area B is not necessary.
- FIGS. 4 and 5 are diagrams showing the fall prevention devices 2 and 2a.
- a rail 22 in the width direction is provided at a position between two adjacent transfer rollers at a position where the fall prevention devices 2 and 2a are provided.
- a pair of left and right fall prevention trolleys 21 are mounted on the rails 22, and one pole 25 is erected on each fall prevention trolley.
- the pole 25 is provided on a pole base 28 having a height substantially equal to the height of the transfer path 1 so as to be able to tilt around a bending pin p parallel to the transfer roller 11.
- a bracket 29 is attached to the base of the pole 25, and a raising / lowering cylinder 27 is mounted between the bracket and the falling-down carriage 21 with a structure in which both ends are pivotally connected. By extending and contracting the cylinder 27, the pole 25 falls down or stands in the longitudinal direction.
- On the pole 25, a plurality of support arms 26 having the same length extend horizontally toward the center of the transfer path.
- the pole 25 on the carrying side is brought down.
- the pole 25 is erected, and the tip of the support arm 26 is positioned in close proximity to the surface of the loaded side plate or web by running the anti-falling carriage 21. , Prevent these side plates and webs from falling over.
- the partition 9 is already welded to the lower plate 6, the side plate 7 is prevented from falling to the inside.
- the upper plate 8 performs the above-described fall prevention operation and brakes the brake motor 24 to fix the fall-down carriage 21, the upper plate 8 is carried on the side plate or web suspended by a crane.
- the lower plate 6 is carried on the transfer path 1 in the material carry-in area A by a crane (not shown), and further, a side plate 7 attached on the far side in the carrying direction of the crane is carried.
- the fall-preventing device 2 on the material loading direction side is tilted, and the back-side tilt-preventing device 2 is set up.
- the lower side of the partition wall 9 suspended on the lower plate 6 by a crane is temporarily welded to the lower plate 6 in a state where the rear side plate 7 is stood against the rear-side fall prevention device 2.
- the board 7 on the near side in the carrying-in direction is carried in, the front-side falling prevention device 2 is set up, and the upper board 8 is carried on the side plates 7 on both sides.
- the first partition is positioned at the center of the portal frame 4 of the temporary welding device 12 by driving the transfer roller 11 with the pole 25 of the fall prevention device 2 standing.
- the assembling apparatus 16 is moved to the temporary welding apparatus 12 side, and the end of the material on the anti-temporary welding apparatus side is positioned at the center of the portal frame 4.
- the cylinders 35, 45, 55 are moved to appropriate positions in the assembling apparatus and temporarily welded in the temporary welding apparatus by moving the carriages 31, 41 and the lifting platform 51 of the temporary welding apparatus and the assembling apparatus.
- the lower plate 6, the upper plate 8 and both side plates 7 are pressed against the edge of the partition wall 9 by moving to the respective positions and extending the cylinders 35, 45 and 55. If the steel plate is bent and there is a gap near the position to be temporarily welded, the cylinders 35, 45 and 55 of the temporary welding device are moved to that position, and the steel plate is Press against the bulkhead. In this state, temporary welding of the lower plate and the partition, both side plates and the partition, and the upper plate and the partition is performed by manual welding of the operator who enters the copying welding device 17 or the box girder structure.
- the carriages 31 and 41 are moved so that the lifting cylinder 35 and the holding cylinder 45 are positioned above and below the side plate 7, and the structure is moved intermittently by intermittent rotation of the transfer roller 11. Then, by extending the push-up cylinder 35 and the presser cylinder 45 at each stop position, the lower plate 6 and the lower edge of the side plate 7 and the upper plate 8 and the upper edge of the side plate 7 are pressed against the temporary welding device 12.
- the copying welding apparatus 17 provided performs temporary welding of the lower plate and both side plates and both the side plates and the upper plate. Depending on the bending state of the side plate 7, the next partition wall and the side plate are temporarily welded before the upper and lower plates and the side plate are temporarily welded.
- temporary welding at a desired position is performed by intermittent movement of the structure including the operation of reversing the transfer roller 11 and feeding back the structure, if necessary, and the temporary welded structure is additionally provisionally welded.
- the operator manually performs additional temporary welding of additional points.
- the temporary attachment structure in which all the temporary welding has been performed is transferred to the main welding area C by driving the transfer roller 11.
- the reversing machine 14 between the additional temporary insertion area B and the main welding area C which is an obstacle to transfer, is retracted from the transfer path 1 onto the retracting base 61.
- the temporary welded structure transferred to the main welding area C is lifted by the lifting device 65 of the welding carriage and the lifting device 65 of the lifting carriage on the main welding area side, and is reversed on the temporary welding area side returned to the transfer path 1.
- the welding machine and the reversing machine opposite to this are moved toward the suspended temporary welded structure, and both ends of the temporary welded structure are held by their supporting claws 86, so that they are supported by the reversing machine 14 in the main welding area. Is done.
- the wires hung on the lifting devices 65, 65 are removed, the lifting carriage 19 is retracted between the main welding area C and the accessory welding area D, and the reversing machine 14 of the main welding area is rotated 90 degrees to An operator who is on the lifting platform 94 of the welding carriage 18 with one side in the upper position performs main welding between the side plate and the upper and lower plates in the upper position, and the welding carriage 18 is transferred to the main welding area. It is done by downward welding while reciprocating along.
- the reversing machine 14 is rotated 180 degrees so that the opposite side plate is in the upper position, and the opposite side plate and the upper and lower plates are finally welded by the same operation.
- the main welding between a partition, a side plate, and an up-and-down board is performed by the operator's manual welding.
- the bridge girder structure for which the main welding has been completed is lowered again onto the transfer path 1 by the lifting devices 65, 65 of the welding cart and the lifting cart in the main welding area. Then, the two reversing machines 14 located between the main welding area C and the small article welding area D are retracted and transferred to the small article welding area D by the rotation of the transfer roller 11.
- an operator can use a small material such as a fitting plate or a mounting plate to the bridge girder structure that is carried in, while appropriately inverting the bridge girder structure with the reversing machines 14 located on both sides of the area. Weld by hand.
- the bridge girder structure that has been completely welded is lifted by a crane (not shown) and carried out from the accessory welding area D.
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Abstract
Disclosed is a fixture and equipment that reduce transport time and wasted idle time between processes and enable efficient weld assembly in weld assembly operations of bridge girder structure.
Provided are a long, narrow transport path (1), along which a bridge girder structure and materials therefor are transported in the lengthwise direction from a materials receiving area (A) to supplemental tack welding area (B), a portal frame (4), which horizontally straddles the transport path (1) between the materials receiving area (A) and supplemental tack welding area (B), a back stopper device (2), which makes it possible to support and raise/lower materials received in a vertical state in the materials receiving area (A), a push-up device, which is disposed below the transport path (1) at the location of the portal frame (4) and moves in the horizontal direction, extending and retracting into the transport path (1), a pair or multiple pairs of horizontal pressing devices, which are disposed in both the side columns (4b) of the portal frame (4) and extend toward the inside of the frame, and a pressing device, which moves horizontally along the beam (4a) of the portal frame (4) and extends downward.
Description
この発明は、工場内で組み立てられて現場で繋ぎ合わせることによって橋桁を構築する溶接構造物(この明細書で「橋桁構造物」という)の仮溶接の際に使用する治具並びに当該治具を含む仮溶接設備及び溶接設備に関するものである。前記治具は、所定形状に切断された鋼板を箱桁や鈑桁に組み立てる際の仮溶接時に材料となる鋼板を所定位置関係で保持する治具である。
The present invention relates to a jig used for temporary welding of a welded structure in which a bridge girder is constructed by being assembled in a factory and connected on site (hereinafter referred to as “bridge girder structure”), and the jig Including temporary welding equipment and welding equipment. The jig is a jig for holding a steel plate, which is a material at the time of temporary welding when assembling a steel plate cut into a predetermined shape into a box girder or a girder, in a predetermined positional relationship.
橋桁には、箱桁(ボックス桁)と呼ばれる構造と鈑桁と呼ばれる構造とがある。箱桁は、図13に示すように、上下の板8、6と2枚の側板7とで四角形の断面を形成したもので、その内部には長手方向(移送路の長手方向、以下同じ。)に所定間隔で断面の形状を規定する2~3枚の隔壁(ダイヤフラム)9が配置されている。一方、鈑桁は、図14に示すように、上下の板(上フランジと下フランジ)8、6の幅中心を1枚のウェブ7で繋いで、断面I形に形成したものである。従来は製造が容易な鈑桁構造が多く用いられていたが、幅員の広い橋が多くなるに従い、力学的により優れた箱桁構造の橋桁が多くなっている。
The bridge girder has a structure called a box girder and a structure called a girder. As shown in FIG. 13, the box girder has a rectangular cross section formed by upper and lower plates 8 and 6 and two side plates 7, and has a longitudinal direction (the longitudinal direction of the transfer path, hereinafter the same). ) Are provided with two to three partition walls (diaphragms) 9 that define the cross-sectional shape at predetermined intervals. On the other hand, as shown in FIG. 14, the girder is formed in a cross-section I shape by connecting the width centers of upper and lower plates (upper flange and lower flange) 8, 6 with a single web 7. Conventionally, a girder structure that is easy to manufacture has been used in many cases. However, as the number of wide-width bridges increases, the number of bridge girder with a mechanically superior box girder structure increases.
橋桁構造物は、長さが15m程度で、大きなものでは幅や高さが数mになるため、仮溶接時に組み立てる鋼板相互を所定位置に保持するために、天井クレーンを何台も使用したり、多数の締結具を用いて鋼板相互を締め付けるなど、多数の作業者を必要としていた。また、側板やウェブなどは倒れる危険があり、重大事故が発生する危険もあった。本願の出願人は、日本国特許公開公報2002年第363919号公報において、鈑桁構造物についての仮溶接治具を提案しており、鈑桁構造物については、これを用いることによって少人数での仮溶接作業が可能になったが、箱桁については、依然として多くの作業者で仮溶接作業が行われている。
Bridge girder structures are about 15m long, and the width and height of several large ones are several meters. Therefore, several overhead cranes can be used to hold the steel plates assembled during temporary welding in place. A large number of workers are required, such as tightening steel plates using a large number of fasteners. In addition, there is a risk that the side plate and the web will fall down and a serious accident will occur. The applicant of the present application has proposed a temporary welding jig for a girder structure in Japanese Patent Publication No. 2002-363919, and the girder structure can be temporarily used by a small number of people by using this jig. Welding work has become possible, but with regard to box girders, many workers are still performing temporary welding work.
なお、本願出願人は、日本国実用新案公開公報平成5年第49190号公報において、箱桁構造のクレーン桁についての仮溶接治具を提案している。しかし、橋梁用の箱桁は、クレーン桁のそれに比べて断面寸法が大きく、かつ個々の現場ごとにその断面寸法が大きく異なるので、上記実用新案公開公報で提案した仮溶接治具の構造は、橋梁用の箱桁構造物の仮溶接治具に採用することは困難である。
The applicant of the present application has proposed a temporary welding jig for a crane girder having a box girder structure in Japanese Utility Model Publication No. 49190, 1993. However, the box girder for the bridge has a larger cross-sectional dimension than that of the crane girder, and the cross-sectional dimension greatly differs for each site, so the structure of the temporary welding jig proposed in the above-mentioned utility model publication is as follows: It is difficult to adopt as a temporary welding jig for box girder structures for bridges.
この発明は、上記のような事情に鑑み、橋梁用の主として箱桁構造物を少人数の作業者で仮溶接可能にし、更に鈑桁構造物の仮溶接にも用いることができる治具を提供すること、及び当該治具を含む仮溶接設備を提供することを課題としている。またこの発明は、橋桁構造物を構成する鋼板の位置関係を固定するための仮溶接を行った後、当該構造物を手作業による追加の仮溶接工程や、その後の手作業又は溶接ロボットによる本溶接工程に順次移送して橋桁構造物の全体の溶接組立作業を行う際の、工程間の移送時間や無駄な待ち時間を低減して、能率の良い溶接組立てを可能にする溶接設備を提供することを課題としている。
In view of the circumstances as described above, the present invention provides a jig that can be used for temporary welding of a main girder structure for a bridge by a small number of workers and also for temporary welding of a girder structure. And provision of provisional welding equipment including the jig. In addition, the present invention provides a temporary welding for fixing the positional relationship of the steel plates constituting the bridge girder structure, and then performing an additional temporary welding process by manual work, a subsequent manual work or a book by a welding robot. Provide welding equipment that enables efficient welding assembly by reducing the transfer time between processes and wasteful waiting time when transferring the entire girder structure by sequentially transferring to the welding process. It is an issue.
この発明では、平行に配置した多数本の移送ローラ11により細長い移送路1を形成し、この移送路に沿って材料搬入エリアA、組立装置16、仮溶接装置12、追加の仮溶接エリアB及び本溶接エリアCを設けている。多数の移送ローラ11は、個々のローラを独立に又は複数本のローラを一括して駆動する電動機59を備えている。材料搬入エリアA、追加の仮溶接エリアB及び本溶接エリアCの各々は、組立てる橋桁構造物の最大長さの長さを備えている。一般的には約15m程度である。仮溶接装置12は、材料搬入エリアAと追加の仮溶接エリアBとの間に配置される。組立装置16は、材料搬入エリアAの反仮溶接装置側の端部に配置される。組立装置16及び仮溶接装置12は、移送路1を跨ぐ門形フレーム4を備えている。材料搬入エリアAに搬入された材料が追加の仮溶接エリアBへと仮溶接装置12の門形フレーム4を通過するときに、それらの材料(鋼板)相互の位置関係を固定するための仮溶接が行われる。
In the present invention, an elongated transfer path 1 is formed by a large number of transfer rollers 11 arranged in parallel, and along this transfer path, a material carry-in area A, an assembling apparatus 16, a temporary welding apparatus 12, an additional temporary welding area B, and A main welding area C is provided. The many transfer rollers 11 include an electric motor 59 that drives each roller independently or collectively. Each of the material carry-in area A, the additional temporary welding area B, and the main welding area C has the maximum length of the bridge girder structure to be assembled. Generally, it is about 15 m. The temporary welding device 12 is disposed between the material carry-in area A and the additional temporary welding area B. The assembly device 16 is disposed at the end of the material carry-in area A on the anti-temporary welding device side. The assembly device 16 and the temporary welding device 12 include a portal frame 4 that straddles the transfer path 1. Temporary welding for fixing the positional relationship between the materials (steel plates) when the material carried into the material carry-in area A passes through the portal frame 4 of the temporary welding device 12 to the additional temporary welding area B. Is done.
材料搬入エリアAには、箱桁の両側の側板や鈑桁のウェブなど、立てて置かれる鋼板の倒れを防止する倒れ止め装置2が、移送路の幅方向(移送路の長手直角方向、以下同じ。)両側のものを一対として、組立装置16側と仮溶接装置12側とに配置されている。一対の倒れ止め装置は、移送路の幅方向に設けたレール22上を走行する左右(移送路の幅方向両側)一対の倒れ止め台車21と、それぞれの台車から立設されたポール25と、このポールから移送路の内側へと延びる複数本の支持腕26とを備えている。倒れ止め台車21は、その車輪23を駆動するブレーキ付きの歯車減速機付モータ(以下、単に「ブレーキモータ」という。)24を備えている。
In the material carry-in area A, there is an anti-falling device 2 that prevents the steel plates placed upright, such as the side plates on both sides of the box girder and the web of the girder, from falling down. .) They are arranged on the assembly device 16 side and the temporary welding device 12 side as a pair on both sides. The pair of anti-falling devices includes a pair of left and right (both sides in the width direction of the transfer path) pair of anti-falling carriages 21 that run on the rails 22 provided in the width direction of the transfer path, and poles 25 erected from the respective carriages, A plurality of support arms 26 extending from the pole to the inside of the transfer path are provided. The anti-tilt carriage 21 includes a motor with a gear reducer with a brake (hereinafter simply referred to as “brake motor”) 24 that drives the wheels 23.
ポール25は、高さの高い側板やウェブの倒れを防止しなければならない関係上、ある程度の高さが必要である。ポール25は、材料搬入エリアA上への材料の搬入に障害とならないように、大略移送路1の高さとした根元の位置で、移送ローラ11と平行な軸回りに起倒可能な構造となっており、その起倒装置(油圧シリンダ)27が設けられている。
The pole 25 needs to have a certain height due to the need to prevent the side plate and the web from falling down. The pole 25 has a structure that can be tilted around an axis parallel to the transfer roller 11 at a position substantially at the height of the transfer path 1 so as not to obstruct material transfer onto the material transfer area A. The raising / lowering device (hydraulic cylinder) 27 is provided.
組立装置16及び仮溶接装置12を配置した移送路1の下方には、幅方向のレール32に沿って走行する一対の押上げ台車31が設けられている。押上げ台車31は、その車輪33を駆動するブレーキモータ34を備えている。各押上げ台車31の中央には、下板を隔壁や側板又はウェブの下縁に押し付けるための押上げ装置(油圧シリンダ)35が搭載されている。橋桁構造物は、自重や走行車両の重さで撓んだときに水平になるように、若干中高となる形状に側板やウェブが切断されている。従って、下板を隔壁や側板又はウェブと密着させるためには、下板を押し上げる必要がある。
Below the transfer path 1 where the assembling device 16 and the temporary welding device 12 are arranged, a pair of push-up carts 31 that run along the rails 32 in the width direction are provided. The push-up carriage 31 includes a brake motor 34 that drives the wheels 33. A lifting device (hydraulic cylinder) 35 for pressing the lower plate against the partition wall, the side plate, or the lower edge of the web is mounted at the center of each lifting carriage 31. In the bridge girder structure, side plates and webs are cut into a shape that is slightly middle and high so that the bridge girder is horizontal when bent by its own weight or the weight of the traveling vehicle. Therefore, in order to bring the lower plate into close contact with the partition wall, the side plate, or the web, it is necessary to push up the lower plate.
組立装置16及び仮溶接装置12の門形フレーム4のビーム(上桁)4aには、幅方向のレール42が設けられ、このレールに沿って走行する左右一対の押え台車41が設けられている。押え台車41は、その車輪43を駆動するブレーキモータ44を備えている。押え台車41の中央には、上板を隔壁や側板又はウェブの上縁に押し付けるための押え装置(油圧シリンダ)45が搭載されている。押え台車41は、ビーム4aの下面と当接して押え台車41の浮き上がりを防止する反力受板47を備えている。
The beam (upper girder) 4a of the portal frame 4 of the assembling apparatus 16 and the temporary welding apparatus 12 is provided with a rail 42 in the width direction, and a pair of left and right presser carriages 41 that run along the rail are provided. . The presser carriage 41 includes a brake motor 44 that drives the wheels 43. A presser device (hydraulic cylinder) 45 for pressing the upper plate against the partition wall, the side plate, or the upper edge of the web is mounted at the center of the presser carriage 41. The presser carriage 41 includes a reaction force receiving plate 47 that contacts the lower surface of the beam 4 a and prevents the presser carriage 41 from being lifted.
門形フレーム4の両側のコラム4bには、昇降ガイド52が設けられ、この昇降ガイドに沿って昇降する昇降台51と、その昇降駆動装置54とが設けられている。昇降台51には、門形フレーム4の内側に向けて進退する部材(ピストンロッド)56を備えた横押え装置(油圧シリンダ)55が搭載されている。この横押え装置55は、前記部材56を進出して箱桁構造物の側板を隔壁の側縁に押し付けるものである。鈑桁構造物の場合は、この横押え装置55でウェブを両側から挟み込むことによってウェブの位置を規定する。
The column 4b on both sides of the portal frame 4 is provided with an elevating guide 52, and an elevating platform 51 that elevates and lowers along the elevating guide and an elevating drive device 54 are provided. On the lifting platform 51, a lateral presser device (hydraulic cylinder) 55 including a member (piston rod) 56 that moves forward and backward toward the inside of the portal frame 4 is mounted. The lateral pressing device 55 advances the member 56 and presses the side plate of the box girder structure against the side edge of the partition wall. In the case of a girder structure, the position of the web is defined by sandwiching the web from both sides with the lateral holding device 55.
仮溶接装置12の幅方向両側上下には、公知の倣い溶接装置17が装着されている。この倣い溶接装置は、箱桁構造物の側板7と上板8及び下板6とを仮溶接、又は、鈑桁構造物のウェブ7と上下のフランジ8、6とを仮溶接するためのものである。
A well-known copying welding device 17 is mounted on the upper and lower sides of the temporary welding device 12 in the width direction. This copying welding apparatus is for temporarily welding the side plate 7 and the upper plate 8 and the lower plate 6 of the box girder structure, or for temporarily welding the web 7 of the girder structure and the upper and lower flanges 8 and 6. is there.
本溶接エリアCの長手方向両側には、本溶接を下向き溶接で行うために仮溶接された構造物を90度ずつ転向する反転機14が配置されている。反転機14は、移送路1上を移動可能、かつ移送路1の片側にその長手直角方向に設けた退避台61へと移動して、構造物が材料搬入エリアA又は追加の仮溶接エリアBから本溶接エリアCに移動するときに、また構造物が本溶接エリアCから小物溶接エリアDに移動するときに、移送路1から側方に退避できるようになっている。
On both sides in the longitudinal direction of the main welding area C, a reversing machine 14 is disposed for turning the structure temporarily welded by 90 degrees in order to perform the main welding by downward welding. The reversing machine 14 is movable on the transfer path 1 and moves to a retreat base 61 provided on one side of the transfer path 1 in the direction perpendicular to the longitudinal direction thereof, so that the structure is brought into the material carry-in area A or the additional temporary welding area B. When moving from main welding area C to main welding area C, and when the structure moves from main welding area C to small article welding area D, it can be retracted laterally from transfer path 1.
本溶接エリアCには、溶接台車18と吊上げ台車19とがそれぞれ移送路1に沿って移動可能に設けられている。溶接台車18は、幅方向両側に昇降作業台94を備え、かつ上部に溶接電源装置や溶接用ガスのボンベなどを搭載する荷台64を備えている。溶接台車18と吊上げ台車19の幅方向両側上部には、電動チェンブロックのような、吊上げ装置65が設けられている。小物溶接エリアDを設けたときは、その長手方向両側に反転機14を対向させて配置し、その中間に吊上げ台車19を配置する。
In the main welding area C, a welding carriage 18 and a lifting carriage 19 are provided so as to be movable along the transfer path 1. The welding carriage 18 is provided with a lifting work platform 94 on both sides in the width direction, and a loading platform 64 on which a welding power supply device, a welding gas cylinder, and the like are mounted. A lifting device 65, such as an electric chain block, is provided at the upper part on both sides in the width direction of the welding carriage 18 and the lifting carriage 19. When the accessory welding area D is provided, the reversing machine 14 is arranged to face both sides in the longitudinal direction, and the lifting carriage 19 is arranged in the middle.
橋桁構造物の材料となる鋼板は、ポール25を倒しかつ組立装置16を移送路1の長手端に退避させた状態で材料搬入エリアAにクレーンで吊上げて搬入される。まず橋桁構造物の下板が、移送路1上に平坦に置かれ、箱桁構造物においては、隔壁が下板の上にクレーンで吊り降ろされて人手により仮溶接される。側板やウェブは、下板の上に立てた状態で吊り降ろされる。その後、ポール25を起立させ、台車21を走行して支持腕26の先端を側板やウェブに近接した位置へ進出させることにより、それらの側板やウェブの倒れを防止する。箱桁構造物においては、下板に仮溶接された隔壁が側板の内側への倒れを防止している。上板は、倒れ止めした側板やウェブの上に吊り降ろされる。その後、組立装置16と吊り降ろされた材料を仮溶接装置側へと移動し、材料の両端を組立装置16及び仮溶接装置の門形フレーム4内に挿入して、押上げ装置35、押え装置45及び横押え装置55で材料搬入エリアAに吊り降ろされた材料相互の位置関係を固定する。
The steel plate used as the material of the bridge girder structure is carried into the material carry-in area A with a crane while the pole 25 is tilted and the assembly device 16 is retracted to the longitudinal end of the transfer path 1. First, the lower plate of the bridge girder structure is placed flat on the transfer path 1, and in the box girder structure, the partition wall is suspended on the lower plate by a crane and temporarily welded manually. The side plate and the web are suspended while standing on the lower plate. Thereafter, the pole 25 is erected, travels on the carriage 21, and advances the tip of the support arm 26 to a position close to the side plate or web, thereby preventing the side plate or web from falling. In the box girder structure, the partition wall temporarily welded to the lower plate prevents the side plate from falling down. The upper plate is hung down on the side plate and the web that are prevented from falling down. Thereafter, the assembly device 16 and the suspended material are moved to the temporary welding device side, both ends of the material are inserted into the assembly device 16 and the portal frame 4 of the temporary welding device, and the lifting device 35 and the presser device are inserted. The positional relationship between the materials suspended in the material carry-in area A is fixed by 45 and the side presser 55.
橋桁構造物の材料となる大型の鋼板には撓みがある。そのため、上下の板や側板を隔壁の縁に当てたときに、密着する箇所と隙間ができる箇所とができる。そこで、仮溶接装置12の押上げ装置35、押え装置45及び横押え装置55を隙間ができている箇所に移動して、当該位置で上下の板及び側板を隔壁に押し付けた状態で、倣い溶接装置17により側板と上下板(鈑桁の場合にはウェブと上下フランジ)及び隔壁と側板を仮溶接する。なお、箱桁構造物の桁の中間にある隔壁については、作業者が桁内に入って仮溶接をする。これにより、上下の板や側板を隙間なく隔壁に仮溶接することができる。
The large steel plate used as the material for the bridge girder structure is bent. For this reason, when the upper and lower plates and the side plates are applied to the edge of the partition wall, a close contact portion and a gap can be formed. Therefore, the welding device 35, the presser device 45, and the side presser device 55 of the temporary welding device 12 are moved to a place where a gap is formed, and the upper and lower plates and the side plates are pressed against the partition wall at the corresponding position, followed by copying welding. The side plate and the upper and lower plates (web and upper and lower flanges in the case of a girder), the partition wall and the side plate are temporarily welded by the device 17. In addition, about the partition in the middle of the girder of a box girder structure, an operator enters in a girder and performs temporary welding. Thereby, the upper and lower plates and the side plates can be temporarily welded to the partition wall without a gap.
また、上板や下板を側板に仮溶接するときは、押上げ装置35や押え装置45が側板の位置に来るように押上げ台車31や押え台車41を移動し、上板や下板と側板の縁との間に隙間ができている位置に押上げ装置35や押え装置45が来るように移送ローラ11で構造物を送って、上板や下板を側板の縁に密着させて仮溶接する。
Further, when the upper plate or the lower plate is temporarily welded to the side plate, the lifting carriage 31 or the holding carriage 41 is moved so that the lifting device 35 or the holding device 45 comes to the position of the side plate. The structure is sent by the transfer roller 11 so that the push-up device 35 and the presser device 45 come to a position where there is a gap between the edge of the side plate and the upper plate and the lower plate are brought into close contact with the edge of the side plate. Weld.
材料搬入エリアAに搬入された材料は、移送ローラ11で間歇的に送られながら仮溶接装置12を通過する間に順次仮溶接が行われ、構造物を構成する後半相互の位置が固定される。構造物が仮溶接装置12を通過して追加の仮溶接エリアBに送り出されたら、必要に応じて、作業者が手作業で追加の仮溶接を行う。これにより、材料となる鋼板相互が本溶接時の熱応力に耐える強度で相互の位置を固定される。
The material carried into the material carry-in area A is intermittently sent by the transfer roller 11 while passing through the temporary welding device 12 and is sequentially subjected to temporary welding, and the positions of the latter half constituting the structure are fixed. . When the structure passes through the temporary welding device 12 and is sent to the additional temporary welding area B, the operator performs additional temporary welding manually as necessary. Thereby, the mutual position is fixed by the intensity | strength which the steel plates used as material can endure the thermal stress at the time of this welding.
仮溶接された材料(仮付構造物)は、搬入側の反転機14を移送路の側方に退避させた状態で、移送ローラ11の回転駆動により、本溶接エリアCに移送される。本溶接エリアCに移送された材料は、溶接台車18及び吊上げ台車19の吊上げ装置65で吊上げられ、両側の反転機14を接近方向に移動して、仮付構造物の長手両端を両側の反転機の爪86で保持し、側板ないしウェブが水平となる位置に回動させる。この状態で一方(上方)の側板のと上下板ないしウェブの片面(上面)と上下フランジとが、昇降作業台94に乗った作業者の手作業で本溶接され、反転機14で180度反転されて、反対側の側板と上下板ないしウェブの反対面と上下フランジとが同様にして本溶接される。もちろん、移送路1の側方を走行する溶接ロボットを用いて側板と上下板ないしウェブと上下フランジの本溶接を行っても良い。箱桁構造物においては、隔壁と両側板、下板及び上板の本溶接が、反転機14で90度回動させながら下向き溶接で行われる。
The temporarily welded material (temporary structure) is transferred to the main welding area C by the rotational driving of the transfer roller 11 with the reversing machine 14 on the carry-in side retracted to the side of the transfer path. The material transferred to the main welding area C is lifted by the lifting device 65 of the welding carriage 18 and the lifting carriage 19, the reversing machines 14 on both sides are moved in the approaching direction, and the longitudinal ends of the temporary attachment structure are reversed on both sides. It is held by a claw 86 of the machine and rotated to a position where the side plate or web is horizontal. In this state, one side (upper) side plate and upper and lower plates or one side (upper surface) of the web and the upper and lower flanges are finally welded manually by an operator on the lifting work table 94 and reversed 180 degrees by the reversing machine 14. Then, the opposite side plate and the upper and lower plates or the opposite surface of the web and the upper and lower flanges are finally welded in the same manner. Of course, it is also possible to perform the main welding of the side plate and the upper and lower plates or the web and the upper and lower flanges using a welding robot that runs on the side of the transfer path 1. In the box girder structure, the main welding of the partition wall, both side plates, the lower plate, and the upper plate is performed by downward welding while rotating 90 degrees by the reversing machine 14.
小物溶接エリアDでは、本溶接された橋桁構造物に、仕口や取付板などの付属物が、作業者の人手により位置決めされて溶接される。本溶接が終了した橋桁構造物は、本溶接エリアC又は小物溶接エリアDからクレーンで吊上げて搬入する。
In the accessory welding area D, accessories such as joints and mounting plates are positioned and welded to the welded bridge girder structure manually. The bridge girder structure for which the main welding has been completed is carried from the main welding area C or the small article welding area D by being lifted by a crane.
本願の請求項1の発明に係る橋桁構造物の仮溶接治具は、橋桁構造物及びその材料を材料搬入エリアAから追加の仮溶接エリアBないし本溶接エリアCに長手方向に移送する細長い移送路1と、材料搬入エリアAと追加の仮溶接エリアBないし本溶接エリアCの間で移送路1を幅方向に跨いでいる門形フレーム4と、材料搬入エリアAに立てた状態で搬入された材料を支える起倒可能な倒れ止め装置2と、門形フレーム4の設置位置において移送路1の下方に配置され、幅方向に移動して移送路1に出没する押上げ装置35と、門形フレーム4の両側のコラム4bに設けられてフレーム内側を向いて伸長する一対又は複数対の横押え装置55と、門形フレーム4のビーム4aに沿って幅方向に移動して下方に伸長する押え装置45とを備えている、橋桁構造物の仮溶接治具である。
A temporary welding jig for a bridge girder structure according to the invention of claim 1 of the present application is an elongate transfer for transferring a bridge girder structure and its material from a material carry-in area A to an additional temporary welding area B or a main welding area C in the longitudinal direction. It is carried in the state where it stands in the material carrying area A and the portal frame 4 which straddles the conveying path 1 in the width direction between the road 1, the material carrying area A and the additional temporary welding area B or the main welding area C. A tiltable fall-preventing device 2 that supports the material, a push-up device 35 that is disposed below the transfer path 1 at the installation position of the gate-shaped frame 4, moves in the width direction, and appears and disappears in the transfer path 1, A pair or a plurality of pairs of lateral pressing devices 55 provided on the columns 4b on both sides of the frame 4 and extending toward the inside of the frame, and moving in the width direction along the beam 4a of the portal frame 4 and extending downward. With presser device 45 It has a temporary weld fixture bridge girder structure.
本願の請求項2の発明に係る橋桁構造物の仮溶接治具は、多数本の移送ローラ11によって形成され、橋桁構造物及びその材料を材料搬入エリアAから追加の仮溶接エリアBないし本溶接エリアCに長手方向に移送する細長い移送路1と、材料搬入エリアAと追加の仮溶接エリアBないし本溶接エリアCの間で移送路1を幅方向に跨いでいる1個の門形フレーム4を備えた仮溶接装置12と、材料搬入エリアAの門形フレーム4に近接した位置と離隔した位置とに設けられて材料搬入エリアAに立てた状態で搬入された材料(側板又はウェブ)7を支える移送路1と平行な方向に起倒可能な倒れ止め装置2と、仮溶接装置12の移送路より下方に配置されて幅方向に個別に移動して移送路1に出没する一対の押上げ装置35と、門形フレーム4の両側のコラム4bに沿って個別に昇降してフレーム4の内側を向いて伸長する横押え装置55と、門形フレームAのビーム4aに沿って幅方向に個別に移動して下方に伸長する一対の押え装置45とを備えている、橋桁構造物の仮溶接治具である。
The temporary welding jig for the bridge girder structure according to the invention of claim 2 of the present application is formed by a large number of transfer rollers 11, and the bridge girder structure and its material are added from the material carry-in area A to the additional temporary welding area B to the main welding. A long and narrow transfer path 1 for transferring to the area C in the longitudinal direction, and one portal frame 4 straddling the transfer path 1 between the material carrying area A and the additional temporary welding area B or the main welding area C in the width direction. And a material (side plate or web) 7 that is provided at a position close to and apart from the portal frame 4 in the material carry-in area A and is stood in the material carry-in area A And a pair of push-down devices that are arranged below the transfer path of the temporary welding device 12 and move individually in the width direction and appear in and out of the transfer path 1. Raising device 35 and portal frame 4 laterally moving along the columns 4b on both sides of the frame 4 and extending toward the inside of the frame 4, and individually moving in the width direction along the beam 4a of the portal frame A and extending downward. It is a temporary welding jig of a bridge girder structure provided with a pair of presser devices 45.
本願の請求項3の発明に係る仮溶接治具は、前記請求項2の発明に係る橋桁構造物の仮溶接治具において、前記押上げ装置35は、移送ローラ11と平行なレール32上を走行する左右一対の押上げ台車31に搭載された上向シリンダであり、前記上押え装置45は、門形フレーム4のビーム4aに移送ローラ11と平行に設けたレール42上を走行する左右一対の押え台車41に搭載された下向きシリンダであることを特徴とする橋桁構造物の仮溶接治具である。
The temporary welding jig according to the invention of claim 3 of the present application is the temporary welding jig of the bridge girder structure according to the invention of claim 2, wherein the push-up device 35 is mounted on the rail 32 parallel to the transfer roller 11. It is an upward cylinder mounted on a pair of left and right push-up carriages 31 that travel, and the upper presser device 45 is a pair of left and right wheels that travel on a rail 42 provided in parallel to the transfer roller 11 on the beam 4a of the portal frame 4. A temporary welding jig for a bridge girder structure, which is a downward cylinder mounted on the presser carriage 41.
また、本願の請求項4の発明に係る仮溶接治具は、前記請求項2又は3の発明に係る橋桁構造物の仮溶接治具において、前記横押え装置55は、門形フレーム4の両側のコラム4bに設けた垂直方向の昇降ガイド52に案内されて昇降する水平シリンダであることを特徴とする橋桁構造物の仮溶接治具である。
A temporary welding jig according to a fourth aspect of the present invention is the temporary welding jig for a bridge girder structure according to the second or third aspect of the invention, wherein the lateral holding device 55 is provided on both sides of the portal frame 4. This is a temporary welding jig for a bridge girder structure which is a horizontal cylinder which is guided by a vertical elevating guide 52 provided in the column 4b.
この発明では、材料ないし仮溶接構造物を移送する移送路1の材料搬入エリアAと追加の仮溶接エリアBとの間に、材料相互の位置を固定する仮溶接装置12を設け、材料を送りながら仮溶接を行ってゆくので、移送時間の無駄が省ける。また、仮溶接装置12で仮溶接される材料の仮溶接されていない側の端部を組立装置16で固定した状態で仮溶接を行うことができるので、材料相互を正確に組立てて仮溶接を行うことができる。
In the present invention, a temporary welding device 12 for fixing the positions of the materials is provided between the material carry-in area A and the additional temporary welding area B of the transfer path 1 for transferring the material or the temporary welding structure, and the material is fed. Since temporary welding is performed, waste of transfer time can be saved. Moreover, since the temporary welding can be performed in a state where the end portion of the material temporarily welded by the temporary welding device 12 is fixed by the assembling device 16, the temporary welding can be performed by accurately assembling the materials. It can be carried out.
また、材料搬入エリアA、追加の仮溶接エリアB、本溶接エリアC及び小物溶接エリアDがそれぞれ独立していて、各工程独立に作業を行うことができると共に、個々の桁構造物の大きさや形状等に応じて各工程での作業時間がほぼ均一となるように、各工程で行う溶接作業量、投入する作業員の数、使用する設備などを決めることができ、これにより、工程間の待ち時間を最小にすることができる。
In addition, the material carry-in area A, the additional temporary welding area B, the main welding area C, and the accessory welding area D are independent of each other, so that each process can be performed independently. Depending on the shape, etc., the amount of welding work to be performed in each process, the number of workers to be input, the equipment to be used, etc. can be determined so that the work time in each process is almost uniform. Latency can be minimized.
そして、従来多数の作業員を必要とした橋梁用の大型の箱桁構造物を少ない人数で安全に仮溶接及び本溶接をすることができるという効果がある。また、箱桁構造物のみでなく、鈑桁構造物の仮溶接及び本溶接も可能であり、多種類の橋桁構造物を製作する工場に設置する仮溶接治具として極めて有用である。
And, there is an effect that it is possible to safely perform temporary welding and main welding of a large box girder structure for a bridge that has conventionally required a large number of workers with a small number of people. Moreover, not only box girder structures but also temporary girder structures and main welding can be performed, which is extremely useful as a temporary welding jig installed in a factory that manufactures various types of bridge girder structures.
以下、図面に示す実施例を参照して、この発明の好ましい一実施形態を説明する。図1及び2は、溶接設備全体を示す平面図及び側面図で、平行に配置した多数の移送ローラ11により、橋桁構造物及びその材料を移送する細長い移送路1が形成されている。移送路1の高さは、床面から約1mの高さである。移送路1は、全長が約50mで、移送方向上流側から材料搬入エリアA、追加の仮溶接エリアB、本溶接エリアC及び小物溶接エリアDの4つの作業エリアが設定されている。移送路1の幅方向両側には、移送路1と平行に走行レール71が配置されている。本溶接エリアC及び小物溶接エリアDの走行レール71の更に外側に外レール72が配置されている。
Hereinafter, a preferred embodiment of the present invention will be described with reference to examples shown in the drawings. FIGS. 1 and 2 are a plan view and a side view showing the whole welding equipment, and an elongated transfer path 1 for transferring a bridge girder structure and its material is formed by a number of transfer rollers 11 arranged in parallel. The height of the transfer path 1 is about 1 m from the floor surface. The total length of the transfer path 1 is about 50 m, and four work areas, a material carry-in area A, an additional temporary welding area B, a main welding area C, and an accessory welding area D, are set from the upstream side in the transfer direction. Travel rails 71 are arranged on both sides in the width direction of the transfer path 1 in parallel with the transfer path 1. An outer rail 72 is arranged on the outer side of the traveling rail 71 in the main welding area C and the accessory welding area D.
材料搬入エリアAの端部に組立装置16が配置され、材料搬入エリアAと追加の仮溶接エリアBとの間に仮溶接装置12が配置されている。本溶接エリアCと小物溶接エリアDの長手両端には、対向する一対の反転機14がそれぞれ配置され、中間位置に吊上げ台車19が配置されている。本溶接エリアCには、溶接台車18が配置されている。組立装置16、仮溶接装置12及び反転機14は、走行レール71上を転動する車輪73を備え、移送路1に沿って走行可能である。吊上げ台車19及び溶接台車18は、外レール72上を転動する車輪74を備え、同様に移送路1に沿って走行可能である。反転機14は、更に移送路1の片側に移送路1と直交する方向に設けた退避台61上に移動して移送路1上から退避可能である。
The assembly device 16 is arranged at the end of the material carry-in area A, and the temporary welding device 12 is arranged between the material carry-in area A and the additional temporary welding area B. A pair of opposing reversing machines 14 are arranged at both longitudinal ends of the main welding area C and the accessory welding area D, respectively, and a lifting carriage 19 is arranged at an intermediate position. A welding carriage 18 is disposed in the main welding area C. The assembling device 16, the temporary welding device 12, and the reversing machine 14 include wheels 73 that roll on the traveling rail 71 and can travel along the transfer path 1. The lifting carriage 19 and the welding carriage 18 include wheels 74 that roll on the outer rail 72, and can travel along the transfer path 1 in the same manner. The reversing machine 14 can be further moved from the transfer path 1 by moving on a retreat base 61 provided on one side of the transfer path 1 in a direction orthogonal to the transfer path 1.
図3は、移送路1に設けた移送ローラ11の支持構造を示す正面図(移送路を上流側から見た図)である。移送ローラ11は、ローラ台15に両端を軸支され、各移送ローラ11に個別に設けた駆動電動機59で駆動されている。図示しない制御器は、材料や構造物が搭載されている部分の移送ローラのみを同期駆動する。ローラ11の両外側に、図の紙面直角方向に延びる走行レール71が、ローラ台15上に固定して設けられている。
FIG. 3 is a front view showing the support structure for the transfer roller 11 provided in the transfer path 1 (view of the transfer path from the upstream side). The transfer roller 11 is pivotally supported at both ends by the roller base 15 and is driven by a drive motor 59 provided for each transfer roller 11 individually. A controller (not shown) synchronously drives only the transfer roller in the portion where the material or structure is mounted. On both outer sides of the roller 11, traveling rails 71 extending in a direction perpendicular to the drawing are fixedly provided on the roller base 15.
図6は組立装置16を示す図、図7は仮溶接装置12を示す図、図8は、これらの装置の下方部分の移送路下に設けられる押上げ台車を示した図である。組立装置16と仮溶接装置12とは、仮溶接装置12が倣い溶接装置17を備えている点だけが異なり、他は同一であるので、図7の仮溶接装置についてのみ説明し、図6の組立装置については、図7で説明する部材と同一の部材に同一の符号を付すことにより、その説明を省略する。
FIG. 6 is a view showing the assembling apparatus 16, FIG. 7 is a view showing the temporary welding apparatus 12, and FIG. 8 is a view showing a push-up carriage provided under the transfer path in the lower part of these apparatuses. The assembly apparatus 16 and the temporary welding apparatus 12 are different only in that the temporary welding apparatus 12 includes a copying welding apparatus 17 and the others are the same. Therefore, only the temporary welding apparatus in FIG. 7 will be described, and FIG. About the assembly apparatus, the description is abbreviate | omitted by attaching | subjecting the same code | symbol to the member same as the member demonstrated in FIG.
仮溶接装置12の前後の移送ローラの間には、幅方向のレール32が設けられ、当該レールに左右の押上げ台車31が搭載されている。押上げ台車31は、その車輪33を駆動するブレーキモータ34を備えている。また、押上げ台車31には、その中央部にロッド36を上向きにした油圧シリンダ(押上げ装置)35が搭載されている。押上げシリンダ35は、縮退したときそのロッド36の先端が移送路1の下方に位置し、伸張したときに移送路1の上方に位置する高さで設けられている。
Between the transfer rollers before and after the temporary welding device 12, a rail 32 in the width direction is provided, and right and left push-up carts 31 are mounted on the rail. The push-up carriage 31 includes a brake motor 34 that drives the wheels 33. The push-up carriage 31 is mounted with a hydraulic cylinder (push-up device) 35 with a rod 36 facing upward at the center thereof. The push-up cylinder 35 is provided at such a height that the tip of the rod 36 is positioned below the transfer path 1 when retracted and positioned above the transfer path 1 when extended.
仮溶接装置12は、移送路1を跨ぐ門形フレーム4を備え、その脚の下端に、走行レール71上を転動する車輪73が軸支されている。各側の車輪73は、それぞれの側に設けたブレーキモータ75で同期駆動されるようになっている。門形フレームのビーム4aには、幅方向のレール42が設けられ、このレール42に左右の押え台車41が搭載されている。押え台車の車輪43は、それぞれの台車に搭載したブレーキモータ44で駆動されるようになっている。押え台車41には、ロッド46を下向きにした押えシリンダ45が搭載されている。また、押え台車41には、押えシリンダ45で上板を押したときの反力で押え台車41が浮き上がるのを防止する反力受板47が、ビーム4aの下面との間に僅かな間隙を残した状態で設けられている。
The temporary welding device 12 includes a portal frame 4 straddling the transfer path 1, and a wheel 73 that rolls on the traveling rail 71 is pivotally supported at the lower end of the leg. The wheels 73 on each side are synchronously driven by a brake motor 75 provided on each side. The beam 4 a of the portal frame is provided with a rail 42 in the width direction, and left and right press carriages 41 are mounted on the rail 42. The wheel 43 of the press carriage is driven by a brake motor 44 mounted on each carriage. A presser cylinder 45 with a rod 46 facing downward is mounted on the presser carriage 41. Further, the presser carriage 41 has a reaction force receiving plate 47 for preventing the presser carriage 41 from being lifted by a reaction force when the upper plate is pushed by the presser cylinder 45, and a slight gap is formed between the lower surface of the beam 4a. It is provided in the state left.
門形フレームの両側のコラム4bには、垂直方向の昇降ガイド52が設けられ、この昇降ガイドに沿って昇降する昇降台51が搭載されている。この昇降台51は、上端を電動チェンブロック54に連結されて上方から垂下している鎖53に連結されており、電動チェンブロック54の正逆転により、昇降ガイド52に沿って昇降する。昇降台51には、移送路の内側に向いて水平に延びる横押えシリンダ55が搭載されている。この横押えシリンダ55のロッド56を伸張することにより、箱桁構造物の側板は、隔壁の側縁に押し付けられ、また鈑桁構造物のウェブは、両側のロッドで挟まれた状態で幅方向の位置を保持される。なお、昇降台51には、作業台57が設けられている。
The column 4b on both sides of the portal frame is provided with a vertical lifting guide 52, and a lifting platform 51 that moves up and down along the lifting guide is mounted. The lifting platform 51 is connected to a chain 53 that is connected to the electric chain block 54 and is suspended from above, and moves up and down along the lifting guide 52 by forward and reverse rotation of the electric chain block 54. A horizontal presser cylinder 55 that extends horizontally toward the inside of the transfer path is mounted on the lifting platform 51. By extending the rod 56 of the side presser cylinder 55, the side plate of the box girder structure is pressed against the side edge of the partition wall, and the web of the girder structure is sandwiched between the rods on both sides in the width direction. Holds the position. The lifting platform 51 is provided with a work table 57.
仮溶接装置12の幅方向両側上下には、箱桁構造物の側板7と上板8及び下板6とを仮溶接、又は、鈑桁構造物のウェブ7と上下のフランジ8、6とを仮溶接するための倣い溶接装置17が装着されている。倣い溶接装置17は、探り部材やレーザービームなどで側板ないしウェブ7と上板8及び下板6の当接部を検出して溶接トーチを検出した当接部に沿って移動させることにより、仮溶接を行う。前述したように、図6の組立装置16には、倣い溶接装置は設けられていない。
The side plate 7 and the upper plate 8 and the lower plate 6 of the box girder structure are temporarily welded on the upper and lower sides in the width direction of the temporary welding device 12, or the web 7 of the girder structure and the upper and lower flanges 8 and 6 are temporarily mounted. A copy welding device 17 for welding is mounted. The scanning welding device 17 detects a contact portion between the side plate or the web 7 and the upper plate 8 and the lower plate 6 with a probe member or a laser beam and moves it along the contact portion where the welding torch is detected. Weld. As described above, the copying apparatus is not provided in the assembling apparatus 16 of FIG.
本溶接エリアCと小物溶接エリアDの長手方向両端には、それぞれ一対の反転機14が対向させて配置されている。各反転機14は、図9、10に示すように、そのフレーム81の下端に走行レール71上を転動する前後左右の4個の車輪73を備えており、これらの車輪を同期駆動するブレーキモータ75が設けられている。各反転機14は、移送路1と平行な軸回りに回転自在に軸支された支持プレート82と、歯車対83を介して当該支持プレートを回転させるブレーキモータ84とを備えている。支持プレート82には、多数の取付孔85が設けられ、製作する橋桁構造物の断面形状及び寸法に合せて当該橋桁構造物を支持する支持爪86を適切な位置に固定できるようになっている。
A pair of reversing machines 14 are disposed opposite to each other in the longitudinal direction of the main welding area C and the accessory welding area D, respectively. As shown in FIGS. 9 and 10, each reversing machine 14 includes four wheels 73 on the lower end of the frame 81, which are front, rear, left and right, rolling on the traveling rail 71, and brakes that drive these wheels synchronously. A motor 75 is provided. Each reversing machine 14 includes a support plate 82 that is rotatably supported around an axis parallel to the transfer path 1, and a brake motor 84 that rotates the support plate via a gear pair 83. A large number of mounting holes 85 are provided in the support plate 82 so that the support claws 86 that support the bridge girder structure can be fixed at appropriate positions in accordance with the cross-sectional shape and dimensions of the bridge girder structure to be manufactured. .
各反転機14のホームポジションには、当該ホームポジションに位置する前後の車輪73の位置に移送路1の幅方向片側に延びる当該幅方向に細長い退避台61が設けられている。各退避台には、その上面を移送路1の幅方向に往復移動する退避台車62と、当該往復移動するためのブレーキモータ66とが設けられている。各退避台車62には、走行レール71の一部となるレール片が固定されており、退避台車62が移送路1側に移動したとき、このレール片が本来の走行レール71の位置となる。反転機14がホームポジションに移動すると、その前後の車輪73がそれぞれの側のレール片上に位置する。この状態でブレーキモータ66を駆動して退避台車62を移送路1の側方に同期移動すると、反転機14は、レール片に搭載された状態で移送路1上から側方へと退避する。移送路1上の橋桁構造物は、その移送の障害となる反転機を移送路1の側方に退避させた状態で、追加の仮溶接エリアBから本溶接エリアCへと、また本溶接エリアCから小物溶接エリアDへと移送することができる。
At the home position of each reversing machine 14, there is provided a retracting base 61 that is elongated in the width direction and extends to one side in the width direction of the transfer path 1 at the front and rear wheels 73 located at the home position. Each evacuation stand is provided with a evacuation carriage 62 that reciprocates in the width direction of the transfer path 1 and a brake motor 66 for the reciprocation. A rail piece that is a part of the traveling rail 71 is fixed to each retreating carriage 62, and when the retreating carriage 62 moves to the transfer path 1 side, this rail piece becomes the original position of the traveling rail 71. When the reversing machine 14 moves to the home position, the front and rear wheels 73 are positioned on the respective rail pieces. In this state, when the brake motor 66 is driven and the retracting carriage 62 is synchronously moved to the side of the transfer path 1, the reversing machine 14 is retracted from the transfer path 1 to the side while being mounted on the rail piece. The bridge girder structure on the transfer path 1 is moved from the additional temporary welding area B to the main welding area C and into the main welding area with the reversing machine that obstructs the transfer being retracted to the side of the transfer path 1. It can be transferred from C to the accessory welding area D.
本溶接エリアCには、手動溶接の際に作業者が搭乗する溶接台車18が配置されている。溶接台車18は、反転機14が内側を通過できる大きさの門形のフレーム91を備えている。門形のフレーム91の脚の下端には、走行レール71より外側に配置した外レール72上を転動する車輪74と、両側の車輪74を同期駆動するブレーキモータ75が装着されている。門形のフレーム91の両側のコラム92には、垂直方向の昇降ガイド93が設けられ、この昇降ガイドに沿って昇降する昇降作業台94が設けられている。昇降作業台94は、上端を電動チェンブロック95に連結されて上方から垂下している鎖96に連結されており、電動チェンブロック95の正逆転により、昇降ガイド93に沿って昇降する。
In the main welding area C, a welding carriage 18 on which an operator gets on during manual welding is arranged. The welding carriage 18 includes a gate-shaped frame 91 having a size that allows the reversing machine 14 to pass inside. A wheel 74 that rolls on an outer rail 72 disposed outside the traveling rail 71 and a brake motor 75 that synchronously drives the wheels 74 on both sides are attached to the lower ends of the legs of the gate-shaped frame 91. The columns 92 on both sides of the gate-shaped frame 91 are provided with vertical lifting guides 93, and a lifting work table 94 that moves up and down along the lifting guides is provided. The elevating work table 94 is connected to the chain 96 that is connected to the electric chain block 95 at the upper end and hangs from above, and moves up and down along the elevating guide 93 by forward and reverse rotation of the electric chain block 95.
門形のフレーム91のビーム91aの上部には、溶接電源装置や溶接用ガスのボンベなどを搭載する荷台64が設けられている。またビーム91aの両側部分には、電動チェンブロックなどの吊上げ装置65が設けられている。
On the upper part of the beam 91a of the gate-shaped frame 91, a loading platform 64 on which a welding power supply device, a welding gas cylinder and the like are mounted is provided. Further, lifting devices 65 such as an electric chain block are provided on both sides of the beam 91a.
本溶接エリアCと小物溶接エリアDには、反転機14に橋桁構造物を装脱する際に使用する吊上げ台車19が配置されている。吊上げ台車19は、反転機14が内側を通過できる大きさのやぐら形のフレーム77を備えている。やぐら型のフレーム77の脚の下端には、走行レール71より外側に配置した外レール72上を転動する車輪74と、両側の車輪74を同期駆動するブレーキモータ75が装着されている。やぐら型のフレーム77の上部両側部分には、電動チェンブロックなどの吊上げ装置65が設けられている。
In the main welding area C and the accessory welding area D, a lifting carriage 19 used when the bridge girder structure is attached to and detached from the reversing machine 14 is arranged. The lifting trolley 19 includes a tower-shaped frame 77 that is large enough to allow the reversing machine 14 to pass inside. A wheel 74 that rolls on the outer rail 72 arranged outside the traveling rail 71 and a brake motor 75 that synchronously drives the wheels 74 on both sides are attached to the lower ends of the legs of the tower-shaped frame 77. A lifting device 65 such as an electric chain block is provided on both upper side portions of the tower-shaped frame 77.
移送路1上の溶接構造物を反転機14に搭載するとき及び反転機14から移送路1に降ろすときは、当該溶接構造物の下に回したワイヤを両側の吊上げ装置65のフックに掛けて、吊上げ装置65を駆動して吊上げる。本溶接エリアCの溶接構造物は、溶接台車18の吊上げ装置65の位置と本溶接エリアC側の吊上げ台車の吊上げ装置65の位置との2箇所で吊上げる。小物溶接エリアDの溶接構造物は、2台の吊上げ装置65で吊上げる。従って、図の溶接設備では、本溶接エリアC側の吊上げ装置65は、本溶接エリアCと小物溶接エリアDの間に配置した2台の反転機14を越えて本溶接エリアCと小物溶接エリアDの間を行き来できるようにしている。また、必要なときに溶接台車18を小物溶接エリアDに移動して、当該溶接台車18に搭乗した作業者が小物の溶接作業を行うこともできるようにしている。
When the welded structure on the transfer path 1 is mounted on the reversing machine 14 and when it is lowered from the reversing machine 14 to the transfer path 1, the wire turned under the welded structure is hung on the hooks of the lifting devices 65 on both sides. Then, the lifting device 65 is driven to lift. The welded structure in the main welding area C is lifted at two locations: the position of the lifting device 65 of the welding carriage 18 and the position of the lifting device 65 of the lifting carriage on the main welding area C side. The welded structure in the accessory welding area D is lifted by two lifting devices 65. Accordingly, in the illustrated welding equipment, the lifting device 65 on the main welding area C side exceeds the two reversing machines 14 disposed between the main welding area C and the small article welding area D, and the main welding area C and the small article welding area. You can go back and forth between D. Further, when necessary, the welding carriage 18 is moved to the accessory welding area D so that an operator who has boarded the welding carriage 18 can perform the welding operation of the accessory.
材料搬入エリアAには、仮溶接装置12に近い位置と組立装置16に近い位置とに、移送路1を挟んで対向する一対ずつの倒れ止め装置2が設けられている。追加の仮溶接エリアBには、構造物が鈑桁構造物であるときに、仮溶接装置12から追加の仮溶接エリアBに送り出されてきた構造物の立ち姿勢が不安定になって倒伏する危険を避けるため、着脱可能な倒れ止め装置2aが配置されている。構造物が箱桁構造物であるときは、追加の仮溶接エリアBの倒れ止め装置2aは不要である。
The material carry-in area A is provided with a pair of anti-falling devices 2 that face each other across the transfer path 1 at a position close to the temporary welding device 12 and a position close to the assembly device 16. In the additional temporary welding area B, when the structure is a girder structure, there is a risk that the standing posture of the structure sent from the temporary welding device 12 to the additional temporary welding area B becomes unstable and falls down In order to avoid this, a detachable fall prevention device 2a is arranged. When the structure is a box girder structure, the additional anti-falling device 2a in the temporary welding area B is not necessary.
図4及び5は、倒れ止め装置2、2aを示した図である。倒れ止め装置2、2aを設ける位置には、幅方向のレール22が隣接する2本の移送ローラの間の位置にして設けられている。レール22には、左右一対の倒れ止め台車21が搭載され、それぞれの倒れ止め台車に各1本のポール25が立設されている。ポール25は、移送路1の高さに略等しい高さのポール台28に、移送ローラ11と平行な屈曲ピンp回りに起倒自在に設けられている。ポール25の根元には、ブラケット29が取り付けられ、このブラケットと倒れ止め台車21との間に起倒シリンダ27が両端を枢支連結された構造で装架されている。このシリンダ27を伸縮させることにより、ポール25が長手方向に倒れ又は起立する。ポール25には、長さの等しい複数の支持腕26が移送路の中心に向って水平に延びている。
4 and 5 are diagrams showing the fall prevention devices 2 and 2a. A rail 22 in the width direction is provided at a position between two adjacent transfer rollers at a position where the fall prevention devices 2 and 2a are provided. A pair of left and right fall prevention trolleys 21 are mounted on the rails 22, and one pole 25 is erected on each fall prevention trolley. The pole 25 is provided on a pole base 28 having a height substantially equal to the height of the transfer path 1 so as to be able to tilt around a bending pin p parallel to the transfer roller 11. A bracket 29 is attached to the base of the pole 25, and a raising / lowering cylinder 27 is mounted between the bracket and the falling-down carriage 21 with a structure in which both ends are pivotally connected. By extending and contracting the cylinder 27, the pole 25 falls down or stands in the longitudinal direction. On the pole 25, a plurality of support arms 26 having the same length extend horizontally toward the center of the transfer path.
材料搬入エリアAに橋桁構造物の下板や側板又はウェブを搬入するときは、その搬入する側のポール25を倒しておく。下板を搬入し、次いで側板又はウェブを搬入した後、ポール25を起立し、倒れ止め台車21を走行して支持腕26の先端を搬入された側板やウェブの面の直近に位置させることにより、これら側板やウェブの倒れを防止する。前述したように、箱桁構造物の場合は、下板6に隔壁9が既に溶接された状態で搬入されるので、側板7の内側への倒れは、隔壁9によって阻止される。上板8は、上記の倒れ止め動作を行ってブレーキモータ24にブレーキをかけて倒れ止め台車21を固定した後、当該側板やウェブの上にクレーンで吊り下げた状態で搬入する。
¡When carrying the lower plate, side plate or web of the bridge girder structure into the material carrying area A, the pole 25 on the carrying side is brought down. After loading the lower plate and then loading the side plate or web, the pole 25 is erected, and the tip of the support arm 26 is positioned in close proximity to the surface of the loaded side plate or web by running the anti-falling carriage 21. , Prevent these side plates and webs from falling over. As described above, in the case of the box girder structure, since the partition 9 is already welded to the lower plate 6, the side plate 7 is prevented from falling to the inside. After the upper plate 8 performs the above-described fall prevention operation and brakes the brake motor 24 to fix the fall-down carriage 21, the upper plate 8 is carried on the side plate or web suspended by a crane.
次に箱桁構造物を仮溶接するときの動作を説明する。材料搬入エリアAの移送路1上に下板6を図示しないクレーンで搬入し、更に当該クレーンでの搬入方向奥側に取付けられる側板7を搬入する。このとき、材料の搬入方向側の倒れ止め装置2は、倒しておき、奥側の倒れ止め装置2は、立てておく。そして、奥側の側板7を奥側の倒れ止め装置2に立てかけた状態で、同様にクレーンで下板6上に吊り降ろした隔壁9の下辺を下板6に仮溶接する。次に搬入方向手前側の板7を搬入して手前側の倒れ止め装置2を立て、両側の側板7の上に上板8を搬入する。そして、倒れ止め装置2のポール25を立設したままの状態で、移送ローラ11の駆動により、最初の隔壁を仮溶接装置12の門形フレーム4の中央に位置させる。また、組立装置16を仮溶接装置12側に移動し、その門形フレーム4の中央に材料の反仮溶接装置側の端部を位置させる。この状態で、仮溶接装置及び組立装置の台車31、41及び昇降台51の移動により、シリンダ35、45、55を、組立装置においては適宜の位置に、仮溶接装置においては仮溶接しようとする位置に、それぞれ移動して、シリンダ35、45、55を伸張することにより、下板6、上板8及び両側板7を隔壁9の縁に押し付ける。もし鋼板に撓みがあって、仮溶接しようとする位置の近くに隙間が生じているようであれば、仮溶接装置のシリンダ35、45、55をその位置に移動して、当該位置で鋼板を隔壁に押し付ける。この状態で、下板と隔壁、両側板と隔壁及び上板と隔壁の仮溶接を、倣い溶接装置17又は箱桁構造物の内側に入った作業者の手溶接により行う。
Next, the operation when the box girder structure is temporarily welded will be described. The lower plate 6 is carried on the transfer path 1 in the material carry-in area A by a crane (not shown), and further, a side plate 7 attached on the far side in the carrying direction of the crane is carried. At this time, the fall-preventing device 2 on the material loading direction side is tilted, and the back-side tilt-preventing device 2 is set up. Then, the lower side of the partition wall 9 suspended on the lower plate 6 by a crane is temporarily welded to the lower plate 6 in a state where the rear side plate 7 is stood against the rear-side fall prevention device 2. Next, the board 7 on the near side in the carrying-in direction is carried in, the front-side falling prevention device 2 is set up, and the upper board 8 is carried on the side plates 7 on both sides. Then, the first partition is positioned at the center of the portal frame 4 of the temporary welding device 12 by driving the transfer roller 11 with the pole 25 of the fall prevention device 2 standing. Further, the assembling apparatus 16 is moved to the temporary welding apparatus 12 side, and the end of the material on the anti-temporary welding apparatus side is positioned at the center of the portal frame 4. In this state, the cylinders 35, 45, 55 are moved to appropriate positions in the assembling apparatus and temporarily welded in the temporary welding apparatus by moving the carriages 31, 41 and the lifting platform 51 of the temporary welding apparatus and the assembling apparatus. The lower plate 6, the upper plate 8 and both side plates 7 are pressed against the edge of the partition wall 9 by moving to the respective positions and extending the cylinders 35, 45 and 55. If the steel plate is bent and there is a gap near the position to be temporarily welded, the cylinders 35, 45 and 55 of the temporary welding device are moved to that position, and the steel plate is Press against the bulkhead. In this state, temporary welding of the lower plate and the partition, both side plates and the partition, and the upper plate and the partition is performed by manual welding of the operator who enters the copying welding device 17 or the box girder structure.
最初の隔壁9の仮溶接が終了したら、押上げシリンダ35及び押えシリンダ45が側板7の上下の位置に来るように台車31、41を移動し、移送ローラ11の間歇回転により構造物を間歇移動して、各停止位置で押上げシリンダ35及び押えシリンダ45を伸張することにより、下板6と側板7の下縁及び上板8と側板7の上縁とを押し付けて、仮溶接装置12に設けた倣い溶接装置17により、下板と両側板及び両側板と上板の仮溶接を行う。側板7の撓みの状態によっては、上下の板と側板との仮溶接を行う前に、次の隔壁と側板との仮溶接を行っておく。
When the temporary welding of the first partition wall 9 is completed, the carriages 31 and 41 are moved so that the lifting cylinder 35 and the holding cylinder 45 are positioned above and below the side plate 7, and the structure is moved intermittently by intermittent rotation of the transfer roller 11. Then, by extending the push-up cylinder 35 and the presser cylinder 45 at each stop position, the lower plate 6 and the lower edge of the side plate 7 and the upper plate 8 and the upper edge of the side plate 7 are pressed against the temporary welding device 12. The copying welding apparatus 17 provided performs temporary welding of the lower plate and both side plates and both the side plates and the upper plate. Depending on the bending state of the side plate 7, the next partition wall and the side plate are temporarily welded before the upper and lower plates and the side plate are temporarily welded.
以上の作業を、必要があれば移送ローラ11を逆転して構造物を送り戻す動作も含む構造物の間歇移動により、所望位置の仮溶接を行って、仮溶接済み構造物を追加の仮溶接エリアBに送り出す。追加の仮溶接エリアBでは、作業者が、更に必要な追加の箇所の仮溶接を手作業で行う。仮溶接を総て行った仮付構造物は、移送ローラ11の駆動により、本溶接エリアCへと移送される。このとき、移送の障害となる追加の仮挿設エリアBと本溶接エリアCの間にある反転機14は、移送路1から退避台61上へと退避させる。
If necessary, temporary welding at a desired position is performed by intermittent movement of the structure including the operation of reversing the transfer roller 11 and feeding back the structure, if necessary, and the temporary welded structure is additionally provisionally welded. Send to area B. In the additional temporary welding area B, the operator manually performs additional temporary welding of additional points. The temporary attachment structure in which all the temporary welding has been performed is transferred to the main welding area C by driving the transfer roller 11. At this time, the reversing machine 14 between the additional temporary insertion area B and the main welding area C, which is an obstacle to transfer, is retracted from the transfer path 1 onto the retracting base 61.
本溶接エリアCに移送された仮溶接構造物は、溶接台車の吊上げ装置65と本溶接エリア側の吊上げ台車の吊上げ装置65とで吊上げられ、移送路1上に復帰した仮溶接エリア側の反転機とこれに対向する反転機とを吊上げられた仮溶接構造物に向けて移動させ、それらの支持爪86で仮溶接構造物の両端を保持することにより、本溶接エリアの反転機14で支持される。その後、吊上げ装置65、65に掛けたワイヤを外し、吊上げ台車19を本溶接エリアCと小物溶接エリアDとの間に退避させ、本溶接エリアの反転機14を90度回転して側板7の一方を上位置とした状態で、溶接台車18の昇降作業台94に搭乗した作業者が、当該上位置の側板と上下板との間の本溶接を、溶接台車18を本溶接エリアの移送路に沿って往復移動させながら下向き溶接で行う。
The temporary welded structure transferred to the main welding area C is lifted by the lifting device 65 of the welding carriage and the lifting device 65 of the lifting carriage on the main welding area side, and is reversed on the temporary welding area side returned to the transfer path 1. The welding machine and the reversing machine opposite to this are moved toward the suspended temporary welded structure, and both ends of the temporary welded structure are held by their supporting claws 86, so that they are supported by the reversing machine 14 in the main welding area. Is done. Thereafter, the wires hung on the lifting devices 65, 65 are removed, the lifting carriage 19 is retracted between the main welding area C and the accessory welding area D, and the reversing machine 14 of the main welding area is rotated 90 degrees to An operator who is on the lifting platform 94 of the welding carriage 18 with one side in the upper position performs main welding between the side plate and the upper and lower plates in the upper position, and the welding carriage 18 is transferred to the main welding area. It is done by downward welding while reciprocating along.
一方の側板の本溶接が終了したら、反転機14を180度回転して反対側の側板を上位置にし、同様な操作で当該反対側の側板と上下板との本溶接を行う。なお、図の装置では、隔壁と側板及び上下板との間の本溶接は、作業者の手溶接により行っている。
When the main welding of one side plate is completed, the reversing machine 14 is rotated 180 degrees so that the opposite side plate is in the upper position, and the opposite side plate and the upper and lower plates are finally welded by the same operation. In addition, in the apparatus of a figure, the main welding between a partition, a side plate, and an up-and-down board is performed by the operator's manual welding.
本溶接が終了した橋桁構造物は、溶接台車と本溶接エリアの吊上げ台車の吊上げ装置65、65で再び移送路1上に降ろされる。そして、本溶接エリアCと小物溶接エリアDとの間にある2台の反転機14を退避させた状態で、移送ローラ11の回転により、小物溶接エリアDに移送される。小物溶接エリアDにおいては、搬入された橋桁構造物に仕口板や取付板などの小型の材料が、適宜当該エリアの両側に位置する反転機14で橋桁構造物を反転させながら、作業者が手作業で溶接する。総てに溶接が終了した橋桁構造物は、図示しないクレーンにより吊上げられて、小物溶接エリアDから搬出される。
The bridge girder structure for which the main welding has been completed is lowered again onto the transfer path 1 by the lifting devices 65, 65 of the welding cart and the lifting cart in the main welding area. Then, the two reversing machines 14 located between the main welding area C and the small article welding area D are retracted and transferred to the small article welding area D by the rotation of the transfer roller 11. In the accessory welding area D, an operator can use a small material such as a fitting plate or a mounting plate to the bridge girder structure that is carried in, while appropriately inverting the bridge girder structure with the reversing machines 14 located on both sides of the area. Weld by hand. The bridge girder structure that has been completely welded is lifted by a crane (not shown) and carried out from the accessory welding area D.
1 移送路
2 倒れ止め装置
11 移送ローラ
12 仮溶接装置
14 反転機
16 組立装置
17 倣い溶接装置
18 溶接台車
19 吊上げ台車
31 押上げ台車
35 油圧シリンダ
41 押え台車
45 押えシリンダ
52 昇降ガイド
55 横押えシリンダ
61 退避台
62 退避台車
65 吊上げ装置
71 走行レール
72 外レール
A 材料搬入エリア
B 仮溶接エリア
C 本溶接エリア
D 小物溶接エリア DESCRIPTION OFSYMBOLS 1 Transfer path 2 Anti-tilt device 11 Transfer roller 12 Temporary welding device 14 Reversing machine 16 Assembly device 17 Copy welding device 18 Welding cart 19 Lifting cart 31 Lifting cart 35 Hydraulic cylinder 41 Pressing cart 45 Pressing cylinder 52 Lifting guide 55 Side presser cylinder 61 Evacuation platform 62 Evacuation cart 65 Lifting device 71 Traveling rail 72 Outer rail A Material loading area B Temporary welding area C Main welding area D Small article welding area
2 倒れ止め装置
11 移送ローラ
12 仮溶接装置
14 反転機
16 組立装置
17 倣い溶接装置
18 溶接台車
19 吊上げ台車
31 押上げ台車
35 油圧シリンダ
41 押え台車
45 押えシリンダ
52 昇降ガイド
55 横押えシリンダ
61 退避台
62 退避台車
65 吊上げ装置
71 走行レール
72 外レール
A 材料搬入エリア
B 仮溶接エリア
C 本溶接エリア
D 小物溶接エリア DESCRIPTION OF
Claims (5)
- 橋桁構造物及びその材料を材料搬入エリア(A)から追加の仮溶接エリア(B)ないし本溶接エリア(C)に長手方向に移送する細長い移送路(1)と、
前記材料搬入エリアと追加の仮溶接エリアないし本溶接エリアの間で前記移送路を幅方向(長手直角方向)に跨いでいる門形フレーム(4)と、
前記材料搬入エリアに立てた状態で搬入された材料を支える起倒可能な倒れ止め装置(2)と、
前記門形フレーム(4)の設置位置において前記移送路の下方に配置され、幅方向に移動して移送路に出没する押上げ装置(36)と、
前記門形フレームの両側のコラムに設けられてフレーム内側を向いて伸長する一対又は複数対の横押え装置(55)と、
前記門形フレームのビームに沿って幅方向に移動して下方に伸長する押え装置(45)とを備えている、
橋桁構造物の仮溶接治具。 An elongated transfer path (1) for transferring the bridge girder structure and its material in the longitudinal direction from the material carry-in area (A) to the additional temporary welding area (B) or the main welding area (C);
A portal frame (4) straddling the transfer path in the width direction (longitudinal perpendicular direction) between the material carry-in area and the additional temporary welding area or the main welding area;
A tiltable fall-preventing device (2) that supports the material carried in the standing state in the material carry-in area;
A push-up device (36) disposed below the transfer path at the installation position of the portal frame (4), moving in the width direction and appearing in and out of the transfer path;
A pair or a plurality of pairs of side pressers (55) provided on columns on both sides of the portal frame and extending toward the inside of the frame;
A presser device (45) that moves in the width direction along the beam of the portal frame and extends downward.
Temporary welding jig for bridge girder structures. - 多数本の移送ローラ(11)によって形成され、橋桁構造物及びその材料を材料搬入エリア(A)から追加の仮溶接エリア(B)ないし本溶接エリア(C)に長手方向に移送する細長い移送路(1)と、
前記材料搬入エリアと追加の仮溶接エリアないし本溶接エリアの間で移送路(1)を幅方向(長手直角方向)に跨いでいる門形フレーム(4)を備えた仮溶接装置(12)と、
前記材料搬入エリアの前記門形フレームに近接した位置と離隔した位置とに設けられて材料搬入エリアに立てた状態で搬入された材料を支える前記移送路と平行な方向に起倒可能な倒れ止め装置(2)と、
仮溶接装置(12)の移送路より下方に配置されて幅方向に個別に移動して移送路に出没する押上げ装置(35)と、
前記門形フレームの両側のコラムに沿って個別に昇降してフレーム内側を向いて伸長する横押え装置(55)と、
前記門形フレームのビームに沿って幅方向に個別に移動して下方に伸長する一対の押え装置(45)とを備えている、
橋桁構造物の仮溶接治具。 An elongated transfer path formed by a number of transfer rollers (11) for transferring the bridge girder structure and its material in the longitudinal direction from the material carry-in area (A) to the additional temporary welding area (B) or the main welding area (C). (1) and
A temporary welding device (12) comprising a portal frame (4) straddling the transfer path (1) in the width direction (perpendicular to the longitudinal direction) between the material carrying area and the additional temporary welding area or the main welding area; ,
The material carrying area is provided at a position close to and separated from the portal frame, and can be tilted in a direction parallel to the transfer path that supports the material carried in a standing state in the material carrying area. Device (2),
A push-up device (35) disposed below the transfer path of the temporary welding device (12) and individually moving in the width direction and appearing in and out of the transfer path;
A lateral presser device (55) that individually moves up and down along the columns on both sides of the portal frame and extends toward the inside of the frame;
A pair of pressers (45) that individually move in the width direction along the beam of the portal frame and extend downward.
Temporary welding jig for bridge girder structures. - 請求項1又は2記載の仮溶接治具と、前記門形フレーム(4)に装着されて当該門形フレームを通過する材料を仮溶接する倣い溶接装置(17)と、
前記材料搬入エリアの反本溶接エリア側で前記移送路(1)に沿って移動可能に当該移送路を幅方向(長手直角方向)に跨いでいる第2の門形フレーム(4)と、
当該第2の門形フレーム(4)の設置位置において前記移送路の下方に配置され、幅方向に移動して移送路に出没する第2の押上げ装置(36)と、
前記第2の門形フレームの両側のコラムに設けられてフレーム内側を向いて伸長する一対又は複数対の第2の横押え装置(55)と、
前記第2の門形フレームのビームに沿って幅方向に移動して下方に伸長する第2の押え装置(45)とを備えている、
橋桁構造物の仮溶接設備。 A temporary welding jig according to claim 1 or 2, and a copying welding apparatus (17) for temporarily welding a material that is attached to the portal frame (4) and passes through the portal frame,
A second portal frame (4) straddling the transfer path in the width direction (perpendicular to the longitudinal direction) so as to be movable along the transfer path (1) on the opposite main welding area side of the material carry-in area;
A second push-up device (36) which is disposed below the transfer path at the installation position of the second portal frame (4), moves in the width direction and protrudes and disappears in the transfer path;
A pair or a plurality of pairs of second side pressers (55) provided on columns on both sides of the second portal frame and extending toward the inside of the frame;
A second presser device (45) that moves in the width direction along the beam of the second portal frame and extends downward.
Temporary welding equipment for bridge girder structures. - 請求項3記載の仮溶接設備と、前記本溶接エリア(C)の両端に対向配置されてそれぞれが前記移送路に沿って個別に移動可能かつ少なくとも仮溶接エリア側のものが当該移送路の側方に退避可能な反転機(14)と、前記本溶接エリアにおいて前記移送路に沿って移動可能な手動溶接台車ないし溶接ロボットと、前記反転機が反転する際に仮溶接構造物を吊上げる吊上げ装置とを備えている、橋桁構造物の溶接設備。 The temporary welding equipment according to claim 3 and the main welding area (C) arranged opposite to each other, each being individually movable along the transfer path, and at least the temporary weld area side being the side of the transfer path A reversing machine (14) retractable in the direction, a manual welding carriage or welding robot movable along the transfer path in the main welding area, and a lifting mechanism for lifting a temporary welding structure when the reversing machine is reversed Equipment for welding bridge girder structures.
- 本溶接エリア(C)の反仮溶接エリア側に位置する小物溶接エリア(D)と、当該小物溶接エリアまで延びている前記移送路(1)と、当該小物溶接エリア(D)の両端に対向配置されてそれぞれが前記移送路に沿って個別に移動可能かつ少なくとも本溶接エリア側のものが当該移送路の側方に退避可能な反転機(14)とを備え、前記本溶接エリアの両端で対向する反転機は共に前記移送路の側方に退避可能に設けられ、前記手動溶接台車ないし溶接ロボット及び吊上げ装置は、前記反転機を越えて前記本溶接エリア(C)と小物溶接エリア(D)との間を前記移送路に沿って移動可能に設けられている、請求項4記載の橋桁構造物の溶接設備。 Opposite the small welding area (D) located on the anti-temporary welding area side of the main welding area (C), the transfer path (1) extending to the small welding area, and both ends of the small welding area (D). And a reversing machine (14), each of which is individually movable along the transfer path and at least the one on the main welding area side can be retracted to the side of the transfer path, at both ends of the main welding area. Opposing reversing machines are provided so that they can be retracted to the side of the transfer path, and the manual welding carriage or welding robot and the lifting device are connected to the main welding area (C) and the accessory welding area (D) beyond the reversing machine. The welding equipment for a bridge girder structure according to claim 4, wherein the welding equipment is movable along the transfer path.
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