JP5214724B2 - Welding trolley - Google Patents

Description

  The present invention relates to a welding carriage, and more particularly to a welding carriage that is advantageous for use when a second steel plate is disposed substantially perpendicularly to a first steel plate and a fillet weld is made at the intersection of the two steel plates.

  When fillet welding the intersection of two steel plates arranged orthogonally, the surface of the steel plate arranged vertically can be run on a steel plate that is equipped with a welding torch and is arranged horizontally. It is common to use a traveling carriage for guiding (see, for example, Patent Document 1).

  When fillet welding is performed using such a traveling carriage, the traveling direction of the traveling carriage is arranged slightly perpendicular to the welding direction so that the welding torch is accurately directed to the intersection of the steel sheets. The guide roller provided on the traveling carriage is brought into pressure contact with the surface of the steel plate arranged vertically.

  In addition, as in the case of long fillet welding of two intersecting parts constituted by a steel plate arranged horizontally and a steel plate arranged perpendicular to the steel plate, such as a longi material, the steel plates are arranged vertically. The traveling carriages described above are arranged and welded to both sides of each steel plate. That is, two traveling carriages are run and welded at the corners on both sides of one vertically arranged steel plate.

Japanese Patent No. 3400200

  In the traveling cart described in Patent Document 1, good welding can proceed with the standing plate as a guide. However, when the direction of the upright plate (welding line) is bent so as to be separated from the traveling direction of the traveling carriage, there arises a problem that it cannot follow.

  In addition, when trying to weld both sides of the standing plate at the same time, two independent traveling carts are required, and there is a problem that an operator who monitors these traveling carts is also required.

  An object of the present invention is to provide a welding carriage that can follow even when a welding line is bent with respect to a vertically arranged steel sheet, and can weld both sides of the vertically arranged steel sheet at the same time. It is to provide.

In order to solve the above problems, a welding carriage according to the present invention includes a first steel plate, and a second steel plate disposed substantially perpendicular to the first steel plate, and the first steel plate. A welding carriage that welds the intersection of the second steel plate and a drive carriage disposed opposite to one surface of the second steel plate, and opposite to the other surface of the second steel plate. And a connecting member for connecting the driving carriage and the driven carriage, and the driving carriage has a magnet arranged to face one surface of the second steel plate and the one of the connecting members. A driving roller that rotates in contact with the surface, a driving member that drives the driving roller, and a guide roller that rotates in contact with the first steel plate, and the other of the second steel plates is provided in the driven carriage. A magnet disposed opposite to the surface of the roller, a driven roller rotating in contact with the other surface, and the front And a guide roller is provided which rotates in contact with the first steel plate, said connecting member is unrotatably constraining a plurality of arm members which are pivotally connected to each other, the connected arm members An arm member connected to a driving carriage and an arm member connected to a driven carriage among the plurality of arm members. Each is provided with a suspension member, and at least the driving carriage is equipped with a welding torch.

  In the welding carriage, either the driving carriage or the driven carriage is connected to two arm members arranged in parallel, and the other is arranged correspondingly between the two arm members. It is preferable that the arm member is pivotably connected to the single arm member.

  In any one of the welding carts described above, it is preferable that a contact portion of the guide roller that contacts the second steel plate is made of rubber.

  Furthermore, in any of the above welding carts, it is preferable that the welding torch is configured to be movable with respect to the welding traveling direction.

  In the welding cart according to the present invention, the intersection of the first steel plate (hereinafter referred to as “horizontal plate”) and the second steel plate (hereinafter referred to as “standing plate”) arranged substantially perpendicular to the horizontal plate is smoothly performed. In other words, the welding carriage has a driving carriage arranged opposite to one surface of the upright plate, a driven carriage arranged on the other surface, and the two carriages are connected via a connecting member. The drive carriage includes a magnet disposed to face one surface of the upright plate, a drive roller that rotates in contact with the one surface, a drive member that drives the drive roller, A guide roller that rotates in contact with the horizontal plate is provided, and the driven carriage has a magnet disposed opposite to the other surface of the upright plate and a driven roller that rotates in contact with the other surface. And a guide roller that rotates in contact with the horizontal plate. Welding torch is mounted on even the drive carriage.

  In the welding carriage, the driving carriage and the driven carriage have their magnets adsorbing the vertical plate, so that the driving roller and the driven roller are pressed against the vertical plate, and the load of the driving carriage and the driven carriage is passed through the guide roller. Supported by a horizontal plate. For this reason, when the driving roller is driven, the driving carriage and the driven carriage travel along the vertical plate, and the distance from the horizontal plate of each carriage is defined by the guide roller. Therefore, regardless of the direction in which the standing plate is bent, the welding carriage can be guided by the standing plate and run.

  Since the welding torch is mounted at least on the drive carriage, the intersection of the horizontal plate and the vertical plate can be welded by operating the welding torch while traveling on the drive carriage and the driven carriage. In particular, it is possible to weld both sides of the vertical plate at the same time by mounting welding torches on both the driving and driven carts.

  In addition, since the connecting member that connects the driving carriage and the welding carriage has a plurality of arm members that are pivotably connected to each other, the operation when spanning the welding carriage over the standing plate can be performed. It can be done easily. In particular, if a ring or the like is attached to two of the plurality of arm members and is lifted by a crane, the welding carriage can be easily moved.

  Furthermore, by connecting the arm members attached with a ring or the like so that they can rotate, it is possible to separate the driving carriage and the driven carriage from each other at the same time as lifting by the crane. The work of becomes easy.

  When the driving carriage and the driven carriage are connected by the connecting member, either the driving carriage or the driven carriage is connected to the two arm members arranged in parallel, and the other corresponds between the two arm members. Even if the standing plate is bent, the driving carriage and the follower carriage are mutually driven rollers, and the driven roller is the surface of the standing board. It is possible to maintain the guide state in pressure contact. That is, it is possible to reliably follow the bending of the standing plate (the bending of the welding line).

  Further, by forming the contact portion of the guide roller with respect to the horizontal plate with rubber, vibration can be absorbed and smooth running can be realized. For example, when fine unevenness is formed on the surface of the horizontal plate, vibration corresponding to the unevenness is generated, and this vibration is transmitted to the drive carriage and the follower carriage to become the vibration of the entire welding carriage and the welding surface. This effect can be eliminated.

  Further, since the welding torch is configured to be movable with respect to the welding traveling direction, when the welding torch is mounted on both the driving carriage and the driven carriage for simultaneous welding, the two welding torches are moved in the traveling direction. By shifting the position, it is possible to prevent a “magnetic splash” in which a strong magnetic force is generated by energization by welding the horizontal plate and the upright plate, and the arc is bent or diffused.

It is the front view and both side view explaining the structure of the trolley | bogie for welding. It is a figure explaining the structure of a drive trolley | bogie. It is a figure explaining the state which rotated the connection member which comprises the trolley | bogie for welding, and separated the drive trolley and the driven trolley | bogie.

A drive carriage B driven carriage C connecting member D horizontal plate E vertical plate F welding torch 1 casing 2 magnet 3 lever 5 drive motor 6a drive roller 6b, 6c drive shaft 7 gear train 8 transmission member 9 operation panel 10 guide roller 11 torch holder 12 Height adjusting member 12a, 12b Handle 18 Bracket 18a Fitting portion 18b Bolt 21 Casing 22 Handle 23 Driven roller 24 Torch holder 25 Height adjusting member 25a, 25b Handle 26 Moving member 26a Slide guide 26b Lever 28 Bracket 28a Fitting portion 28b Bolts 31 to 34 Arm members 35 to 37 Rotating members 35a Rotating shafts 35b Bearings 35c Rotation restricting plates 35d Handles 38 Suspension hooks 39 Handles

  Hereinafter, a preferred embodiment of a welding carriage according to the present invention will be described with reference to the drawings. FIG. 1 is a front view and a side view for explaining the configuration of the welding carriage. FIG. 2 is a diagram for explaining the configuration of the drive carriage. FIG. 3 is a view for explaining a state in which the connecting member constituting the welding carriage is rotated to separate the driving carriage from the driven carriage.

  The welding carriage shown in the figure is configured by connecting a driving carriage A and a driven carriage B via a connecting member C. This welding carriage usually welds a horizontal plate D, which is a first steel plate arranged horizontally, and a standing plate E, which is a second steel plate arranged substantially perpendicular to the horizontal plate D. In this case, it is arranged so as to straddle the standing plate E, and the fillet welding by the welding torch F can be simultaneously performed on both sides of the standing plate E.

  The horizontal plate D is constituted by a steel plate having a large area such as a hull material, and the vertical plate E is applied with a cross-section and dimensions of other types as shown in FIG. In the present invention, the shape and dimensions of the upright plate E are not limited, but are configured to be applicable to a preset maximum dimension.

  Moreover, it is not necessarily limited to welding simultaneously with respect to the cross | intersection site | part of the horizontal plate D and the standing board E, The welding of only one side may be sufficient. However, in the case of the longi material, welding to both side surfaces of the upright plate is essential, and the welding carriage of the present invention is configured to perform such welding.

  The drive carriage A has a casing 1, and a magnet 2 is disposed inside the casing 1. The magnet 2 is configured to move inside the casing 1 by rotating the lever 3 with respect to the casing 1. That is, when the lever 3 is rotated to the position shown in FIG. 1, the magnet 2 moves as shown by a solid line in FIG. 2 and approaches the upright plate E, and the lever 3 is moved counterclockwise from the state shown in FIG. When the magnet 2 is rotated to, the magnet 2 moves as shown by a two-dot chain line in FIG. Therefore, it is possible to apply a large suction force to the standing plate E as the lever 3 rotates, or to reduce the suction force.

  The magnet is also arranged in the driven carriage B. When the welding carriage is run, the magnet is adsorbed by the magnet 2 of the driving carriage A and the magnet of the driven carriage B arranged so as to sandwich the upright plate E. ing. The attractive force of the magnet 2 is not particularly limited, but is preferably set in consideration of the weight of the welding carriage and the weight of cables and hoses acting on the welding torch F. In particular, it is preferable that the attracting force by each magnet 2 be smaller than the total load of the welding carriage.

  Thus, by setting the attracting force of the magnet 2 to be smaller than the total load of the welding carriage, a part of the total load acts on the horizontal plate D as a vertical load via the guide roller. Due to the vertical load, the welding carriage can always hold a position in a certain height direction from the horizontal plate D.

  A drive motor 5 is disposed inside the casing 1, and a drive shaft 6 b in which drive rollers 6 a are respectively attached to both ends of the traveling direction of the casing 1 (the directions of arrows a and b in FIG. 1). 6c is arranged. The drive motor 5 and the drive shaft 6b are driven through a gear train 7, and the drive shaft 6b and the drive shaft 6c are driven through a transmission member 8 such as a chain or a timing belt. Therefore, when the drive motor 5 is rotated, this rotation drives the drive shaft 6b via the gear train 7, and further drives the drive shaft 6c via the transmission member 8. The driving roller 6a rotates.

  The driving roller 6a rotates in contact with the surface of the upright plate E to run the welding carriage. For this reason, it is comprised with the material which produces sufficient contact friction with respect to the surface of the standing board E. FIG. Such materials include rollers such as steel rollers and rubber rollers whose surfaces are knurled, and any of them can be preferably used.

  Moreover, since it is necessary for the driving roller 6a to maintain a stable contact state with the upright plate E, it is preferable that the driving roller 6a is constituted by a flat surface.

  An operation panel 9 is provided on the outer surface of the casing 1, and the rotation direction and the number of rotations of the drive motor 5 are adjusted by operating switches and dials arranged on the operation panel 9 to perform welding. The traveling direction and traveling speed of the carriage can be controlled.

  Guide rollers 10 are rotatably arranged on the lower surface of the casing 1 and at both ends in the traveling direction. The guide roller 10 is configured to be freely rotatable, and is configured to be in contact with the surface of the horizontal plate D and to rotate as the driving carriage A (welding carriage) travels. In particular, the guide roller 10 is configured such that a portion in contact with the horizontal plate D is made of rubber, and is configured to be able to absorb minute vibrations generated as the welding carriage travels.

  The guide roller 10 only needs to be made of rubber at least at a portion in contact with the horizontal plate D. Therefore, the guide roller 10 formed entirely of rubber or the guide roller 10 formed by lining rubber on the surface of the iron core. It is possible to select such a configuration.

  The shape of the guide roller 10 is not particularly limited, but the welding carriage can smoothly follow the standing plate E even when the standing plate E is bent (when the welding line is bent). It is formed in a tapered shape. In this way, by forming the guide roller 10 in a tapered shape, the area of the contact portion of each guide roller 10 with respect to the horizontal plate D is reduced, and it is possible to reliably and smoothly follow the change of direction.

  A welding torch F is disposed on one side of the driving carriage A in the traveling direction (in this embodiment, the direction of the arrow a in FIG. 1). The welding torch F is held by a torch holder 11 provided at the end of the casing 1 and is configured to be able to adjust the approach position or the separation position with respect to the standing plate E by the handle 12a of the height adjusting member 12. In addition, the approach position or the separation position with respect to the horizontal plate D can be adjusted by the handle 12b. Therefore, by operating the height adjusting member 12, the distance (height) from the horizontal plate D of the welding torch F and the distance (height) from the standing plate E are adjusted to set an optimum welding distance. Is possible.

  The driven carriage B is configured to travel in the same direction according to the driving of the drive carriage A without having a drive member. That is, the traveling of the driving carriage A is transmitted to the driven carriage B via the connecting member C, so that the driven carriage B can be driven by the driving carriage A.

  The driven carriage B has a casing 21, and a magnet (not shown) similar to the magnet 2 provided on the driving carriage A is arranged inside the casing 21. This magnet is configured to be able to move inside the casing 21 in a direction approaching the upright plate E or in a direction away from the upright plate E in accordance with the rotation operation of the handle 22.

  The driven roller 23 is arrange | positioned at the both ends part of the running direction of the casing 21, and the up-down direction, respectively. The driven roller 23 is configured to be freely rotatable with respect to the casing 21, and can be rotated by contact friction with the surface of the standing plate E as the drive carriage A travels. The structure and shape of the driven roller 23 are not particularly limited, but it is preferable to use the same one as the driving roller 6a.

  The same guide roller 10 as the guide roller 10 provided on the drive carriage A is disposed on the lower surface of the casing 21 at both ends in the traveling direction so as to be freely rotatable.

  A welding torch F is disposed on one side of the driven carriage B in the traveling direction (in this embodiment, in the direction of arrow a in FIG. 1). The welding torch F is provided at an end portion of the casing 21 and is configured to be able to adjust the distance (height) from the welding torch F to the horizontal plate D and the standing plate E and is also a welding traveling direction. It is held by a torch holder 24 configured to be movable with respect to the direction.

  The torch holder 24 is configured to be able to adjust the approaching position or the separation position with respect to the standing plate E by the handle 25a of the height adjusting member 25, and to be able to adjust the approaching position or separation position with respect to the lateral plate D by the handle 25b. It is configured. Therefore, the optimum welding distance can be set by adjusting the distance (height) of the welding torch F held by the torch holder 24 from the horizontal plate D and the standing plate E.

  Further, the torch holder 24 and the height adjusting member 25 are configured such that their positions can be moved along the traveling direction by a moving member 26 disposed in the casing 21. The moving member 26 includes a slide guide 26a for moving a bar (not shown) integrally provided with the torch holder 24 and the height adjusting member 25 in the traveling direction, and fixing or fixing the bar to the slide guide 26a. And a lever 26b to be released. Then, the lever 26b is operated to release the bar, and the bar is moved along the slide guide 26a, whereby the torch holder 24 and the height adjusting member 25 are moved in the travel direction within the length range of the slide guide 26a. It is possible to adjust the position.

  In the torch holder 24 configured as described above, when both sides of the standing plate E are simultaneously fillet welded, the position in the traveling direction is preceded or followed without facing the welding torch F provided on the drive carriage A. It becomes possible to make it. For this reason, when each welding torch F is operated, no magnetic blow is generated.

  The connecting member C connects the driving carriage A and the driven carriage B, transmits the driving force of the driving carriage A to the driven carriage B, lifts the welding carriage with a crane, etc., and lifts with the crane. And the function of separating the driving cart A and the driven cart B to avoid the standing plate E.

  The connecting member C is configured by connecting a plurality of arm members so as to be rotatable. The number of arm members constituting the connection member C is not particularly limited, but in the present embodiment, there are four arm members 31 to 34, and these arm members 31 to 34 are rotating members 35 to 37. Is pivotably connected.

  The arm members 31 to 33 are constituted by connecting two bar members arranged in parallel, and the arm member 34 is constituted by one bar member arranged substantially at the center of the arm members 31 to 33. ing. In particular, the arm members 31 and 34 are configured to have the same length, and the arm members 32 and 33 are also configured to have the same length. The arm member 31 is connected to the driving carriage A, and the arm member 34 is connected to the driven carriage B. The arm members 32 and 33 are disposed between the arm member 31 and the arm member 34.

  A bracket 18 provided with a fitting portion 18a for fitting ends of two bar members constituting the arm member 31 is attached to the casing 1 constituting the drive carriage A. The lower end portion of the arm member 31 is fitted into the fitting portion 18a of the bracket 18 and is fixed by fastening the bolt 18b, whereby the both are integrally connected.

  A bracket 28 provided with a fitting portion 28a for fitting an end portion of one bar member constituting the arm member 34 is also attached to the casing 21 constituting the driven carriage B. In particular, a ring-shaped groove (not shown) is formed on the outer periphery of the lower end portion of the arm member 34, and the bolt 28b is fitted into the ring-shaped groove by fitting into the fitting portion 28a of the bracket 28. Thus, it is configured to be relatively rotatable. When the bolt 28b is firmly fastened, the arm member 34 and the bracket 28 can be fixed and integrated.

  Therefore, while performing the welding operation, the bolt 28b is loosened and the tip portion of the bolt 28b is fitted in the ring-shaped groove so as to allow relative rotation. When the welding operation is completed and the welding carriage is moved, the bolt 28b is firmly fastened to integrate the two.

  As described above, the driven carriage B is configured to be rotatable with respect to the arm member 34 about the arm member 34 while performing the welding operation. For this reason, when the driving carriage A and the driven carriage B are traveling while adsorbing both surfaces of the standing plate E, the planar bending (the bending of the welding line or the standing plate E within the allowable range) is applied to the standing plate E. It is possible to follow this bend even when the bend occurs.

  That is, when the driving carriage A travels along the bending of the standing board E, the driven carriage B follows the bending of the standing board due to the adsorption of the magnet, and at this time, the change in the posture with respect to the driving carriage A is centered on the arm member 34. It can be absorbed by the rotation of the driven carriage B. Therefore, it becomes possible to smoothly follow the bending of the standing plate E as a welding cart.

  When the arm members 31 and 34 are attached to the brackets 18 and 28 of the respective carriages A and B, the dimension from the lower surface of the guide roller 10 of each carriage A and B to the top of the arm members 31 and 34 is the largest welded. It is set to be substantially equal to the dimension up to the top of the power stand E. By configuring the arm members 31 and 34 in this way, it is possible to perform smooth welding up to the upright plate E having the maximum dimension.

  Arm members 32 and 33 are pivotally connected to upper end portions of the arm members 31 and 34 via pivot members 35 and 36, respectively, and the arm member 32 and the arm member 33 are also pivoted via a pivot member 37. Connected as possible. Here, since the structures of the rotation members 35 to 37 that connect the arm members 31 to 34 so as to be rotatable are all the same, the rotation member 35 that connects the arm member 31 and the arm member 32 is representatively shown. The structure will be described.

  The rotation member 35 includes a rotation shaft 35 a that rotatably connects the upper end portion of the arm member 31 and the lower end portion of the arm member 32, a bearing 35 b that rotatably supports the rotation shaft 35 a, and the arm member 32. The arm member 31 is fitted to a rotation restricting plate 35c that is attached to the lower end portion of the arm member 31 and has a long hole that restricts the rotation angle of the arm members 31 and 32, and a long hole formed in the rotation restricting plate 35c. And a fixed handle 35d that is fastened to the upper end portion.

  In the rotating member 35 configured as described above, when the handle 35d is firmly tightened, the arm member 31 and the arm member 32 are integrated so as not to rotate. Accordingly, while the welding operation is being performed by the welding carriage, the drive carriage A, the connection member C, and the driven carriage are made by tightening the handle 35d in each of the rotating members 35 to 37 to make the connection member C rigid. B can be rigidly integrated. And by making it rigid in this way, it is possible to reliably transmit the driving force of the driving cart A to the driven cart B.

  Further, by loosening the handle 35d of each of the rotating members 35 to 37, the arm members 31 to 34 constituting the connecting member C can be rotated with respect to each other within the range of the long hole formed in the rotation restricting plate 35c. It becomes. For this reason, it becomes possible to prepare for welding work or to remove from the standing plate E by attaching the driving cart A and the driven cart B apart from each other and mounting them on the standing plate E.

  Suspension hooks 38 are attached to the upper end portions of the arm members 31 and 34 constituting the connection member C, respectively, and a handle 39 is attached to the rotation shaft 35a of the rotation member 37 to which the arm member 32 and the arm member 33 are connected. Is provided.

  The suspension hook 38 is for hanging a wire or hooking a hook when the welding carriage is lifted and moved by a crane. The handle 39 is used when an operator moves the welding carriage.

  In particular, when the handle 35d of each of the rotating members 35 to 37 is loosened when the crane is lifted by the crane using the hanging hook 38, each arm member 31 constituting the connecting member C as shown in FIG. ... To 34 rotate around the rotation members 35 to 37 within a range allowed by the rotation restricting plate 35c, and the carts A and B are separated from each other with the rotation.

  Accordingly, each of the carriages A and B is sufficiently separated from the standing plate E. In this state, the carts A and B can be attached or detached without interfering with the standing plate E.

  Next, a procedure for attaching the welding carriage configured as described above to the standing plate E will be briefly described. First, the handle 35c constituting each of the rotating members 35 to 37 is loosened to be rotatable, and the bolt 28b of the bracket 28 of the driven carriage B is firmly tightened so that the driven carriage B and the arm member 34 cannot be rotated. It is made to unite with.

  Further, the welding torch F is separated from the torch holders 11 and 24, and the magnets 2 arranged on the carriages A and B are also moved to positions where the attracting force is minimized with respect to the standing plate E.

  When the crane is lifted by the crane through the suspension hook 38 in the above-described state, the arm members 31 to 34 are rotated through the rotating members 35 to 37 in the welding cart, and as shown in FIG. B holds the most distant posture. If it moves to the position of the target standing plate E in this state and descends, the guide roller 10 provided on each carriage A, B contacts the horizontal plate D as it descends.

  Next, lifting by the crane is released, and the carriages A and B are brought close to the standing plate E while the operator lifts the handle 39. After the carriages A and B approach the upright plate E, the lever 3 of the driving carriage A and the handle 22 of the driven carriage B are operated to move the magnet 2 to the upright plate E side. By this movement of the magnet 2, each of the carts A and B is attracted to the standing plate E, and the driving roller 6 a and the driven roller 23 come into contact with the surface of the standing plate E.

  After confirming the contact state of the driving roller 6a and the driven roller 23 with respect to the surface of the standing plate E, the connecting member C cannot be rotated by firmly tightening the handle 35d of each of the rotating members 35 to 37 constituting the connecting member C. Thus, the driving carriage A, the connecting member C, and the driven carriage B constituting the welding carriage are configured as rigid bodies.

  Thereafter, the bolt 28b of the bracket 28 provided on the driven carriage B is loosened, thereby allowing the rotation of the driven carriage B around the arm member 34.

  The welding torch F is mounted on the torch holders 11 and 24 of the carts A and B. At this time, when the welding torches F are attached to both the torch holders 11 and 24 and both surfaces of the standing plate E are welded to the horizontal plate D at the same time, the positions of the two welding torches F are set in the welding direction (welding carriage In the direction of travel). That is, the position of the torch holder 24 and the height adjusting member 25 in the traveling direction is adjusted by operating the moving member 26 provided on the driven carriage B to move the torch holder 24 along the slide guide 26a.

  Further, the height adjusting members 12 and 25 provided on the carts A and B are operated so that the welding torches F are opposed to the intersecting portions of the horizontal plate D and the standing plate E.

  By performing the above-described series of operations, it is possible to set the welding carriage at the welded portion of the horizontal plate D and the vertical plate E, and follow the vertical plate E by sandwiching the vertical plate E from both sides by the respective carts A and B. . Therefore, after that, welding is started by starting the welding torch F, and the driving carriage A is run in the direction of arrow a or arrow b, so that good welding can be continued on both sides of the standing plate E. It is.

  In the state described above, a part of the load of the welding carriage including the welding torch F is supported by the standing plate E by the attracting force of the magnet 2, and the other part is supported by the horizontal plate D via the guide roller 10. . In this way, by dispersing and supporting the load of the welding carriage in two directions orthogonal to each other, the welding carriage does not lift from the horizontal plate D as it travels, and follows the surfaces of the horizontal plate D and the vertical plate E. It becomes possible to travel.

  When the target welding is completed, the welding torch F is removed from the torch holders 11 and 24 of the carriages A and B, and then the handles 35d of the rotating members 35 to 37 constituting the connecting member C are loosened to loosen the arm members 31 to 31. 34 is made rotatable, and the bolt 28 b of the bracket 28 of the driven carriage B is firmly tightened to fix the driven carriage B to the arm member 34.

  The suspension hook 38 is hooked on the crane, and the levers 3 and the handles 22 of the carriages A and B are operated to separate the magnet 2 from the standing plate E. And if it lifts with a crane, each arm member 31-34 of the connection member C will rotate centering on the rotation members 35-37 with the lifting at this time, and each cart A and B will be from the surface of the stand board E. The welding carriage is lifted and moved to a desired position.

  As described above, it is easy to attach and detach the welding carriage to / from the horizontal plate D and the vertical plate E, and the corners on both sides of the vertical plate E can be simultaneously performed by one welding cart. It becomes possible to weld. For this reason, the work of monitoring the progress of welding can be facilitated, and the workability can be improved.

  The welding carriage of the present invention is advantageous when used to weld a longus material to a hull member, and is also advantageous when used to manufacture a T-shaped member by welding a web to a flange. .

Claims (4)

It is a welding cart having a first steel plate and a second steel plate arranged substantially perpendicular to the first steel plate, and welding a crossing portion of the first steel plate and the second steel plate. And
A drive carriage disposed opposite to one surface of the second steel plate;
A driven carriage disposed opposite to the other surface of the second steel plate;
A connecting member for connecting the driving carriage and the driven carriage,
The drive carriage includes a magnet disposed opposite to one surface of a second steel plate, a drive roller that rotates in contact with the one surface, a drive member that drives the drive roller, and the first steel plate. There is a guide roller that rotates in contact with it,
The driven carriage includes a magnet disposed opposite to the other surface of the second steel plate, a driven roller that rotates in contact with the other surface, and a guide roller that rotates in contact with the first steel plate. Is provided,
The connection member includes a plurality of arm members that are connected to each other so as to be rotatable, and a rotation member that restricts the connected arm members so that the connection cannot be performed or that can be rotated by releasing the constraint. And a suspension member is provided on each of the arm members connected to the drive carriage and the arm member connected to the driven carriage among the plurality of arm members,
A welding carriage, wherein a welding torch is mounted on at least the drive carriage.   Either one of the driving carriage or the driven carriage is connected to two arm members arranged in parallel, and the other is connected to one arm member arranged correspondingly between the two arm members. The welding carriage according to claim 1, wherein the welding carriage is pivotally connected.   The welding carriage according to claim 1 or 2, wherein the guide roller is formed of rubber at a contact portion that contacts the second steel plate.   The welding carriage according to any one of claims 1 to 3, wherein the welding torch is configured to be movable with respect to a welding traveling direction.

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