CN101909811B - Carriage for welding - Google Patents

Abstract

To provide a carriage for welding which can follow a welding line for a steel plate disposed vertically even if it is out of the straight and can simultaneously weld both sides of the steel plate disposed vertically. [MEANS FOR SOLVING PROBLEMS] The carriage for welding is used for welding an intersecting point between a horizontal plate (D) and a standing plate (E) disposed nearly perpendicular to the horizontal plate (D), and comprises a driving carriage (A) so disposed as to face one face of the standing plate (E), a follow-up carriage (B) so disposed as to face the other face of the standing plate (E), and a connection member (C) for connecting the driving carriage (A) and the follow-up carriage (B). The driving carriage (A) is provided with a magnet (2) so disposed as to face one face of the standing plate (E), a driving roller (6a), a driving motor (5) for driving the driving roller (6a), and a guide roller (10) which turns in contact with the horizontal plate (D). The follow-up carriage (B) is provided with a magnet so disposed as to face the other face of the standing plate (E), a follow-up roller (23), and a guide roller (10) which turns in contact with the horizontal plate (D). At least the driving carriage (A) is mounted with a welding torch (F).

Description

Stand for welding

technical field

The present invention relates to a welding stand (cart for fusion welding), and more particularly to a method that facilitates arranging a second steel plate approximately vertically to a first steel plate and performing fillet weld welding (corner joint する) at the intersecting portion of the two steel plates. Welding bench used when using.

Background technique

When performing fillet weld welding on the intersection of two orthogonally arranged steel plates, generally a traveling stand is used, on which a welding torch is mounted, and the traveling stand can run on the horizontally arranged steel plates. , to guide the surface of the vertically arranged steel plate (for example, refer to Patent Document 1).

When using such a traveling stand for fillet weld welding, in order to correctly direct the welding torch toward the intersection of the steel plates, the traveling direction of the traveling stand is directed slightly toward the side of the vertically arranged steel plate from the direction in which the welding proceeds. , so that the guide rollers provided on the traveling frame are pressed against the surface of the vertically arranged steel plate.

In addition, when fillet welding is performed on two intersecting portions of a steel plate arranged horizontally and a steel plate arranged vertically relative to the steel plate such as a girder (Longji material), the above-mentioned driving parts are respectively arranged on both sides of the steel plate arranged vertically. Bench for welding. That is, welding is carried out by driving two traveling stands on the corners of both sides of a single vertically arranged steel plate.

Patent Document 1: Japanese Patent No. 3400290

In the traveling frame described in Patent Document 1, good welding can be performed using the vertical plate as a guide. However, when the direction of the vertical plate (welding line) is bent so as to be away from the traveling direction of the traveling frame, there arises a problem that it cannot follow (track).

In addition, when it is desired to weld both sides of the vertical plate at one time, two independent traveling stands are required, and there is also a problem that an operator who needs to monitor these traveling stands is also required.

Contents of the invention

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

In order to solve the above-mentioned problems, the welding stand of the present invention has a first steel plate and a second steel plate arranged approximately perpendicular to the first steel plate, and welds the intersection of the first steel plate and the second steel plate, in,

The welding stand has: a driving stand arranged to face one surface of the second steel plate; a driven stand arranged to face the other surface of the second steel plate; and a connecting member. which connects the driving stand and the driven stand, and transmits the travel of the driving stand to the driven stand,

The drive stand is provided with: a magnet disposed opposite to one surface of the second steel plate, a drive roller that rotates in contact with the one surface, a drive member that drives the drive roller, and a drive member that contacts and rotates the first steel plate. rotating guide rollers,

The driven stand is provided with: a magnet arranged to face the other surface of the second steel plate, a driven roller that rotates in contact with the other surface, and a roller that rotates in contact with the first steel plate. guide roller,

The connecting member has: a plurality of arm members rotatably connected to each other, and a rotating member that restricts the connected arm members so that they cannot rotate or unrestricts them so that they can rotate,

A welding torch is mounted on at least the drive stand.

In the above-mentioned welding stand, it is preferable that the connecting member connecting the driving stand and the driven stand is configured to have a plurality of arm members rotatably connected to each other, and it is preferable that the driving stand or the driven stand Either one is connected to two arm members arranged in parallel, and the other is rotatably connected to one arm member arranged correspondingly between the two arm members.

In the welding stand according to any one of the above, preferably, a contact portion where the guide roller contacts the second steel plate is made of rubber.

Furthermore, in the welding stand according to any one of the above, it is preferable that the welding torch is configured to be movable in a direction in which welding proceeds.

Invention effect

In the welding stand 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 "vertical plate") arranged substantially perpendicular to the horizontal plate can be adjusted. For smooth welding. That is, the welding stand is disposed on one surface of the vertical plate facing the driving stand, and the driven stand is arranged on the other surface, and the two stands are connected via a connecting member. A magnet arranged to face one surface of the vertical plate, a drive roller that rotates in contact with the one surface, a drive member that drives the drive roller, and a guide roller that rotates in contact with the horizontal plate are provided on the drive stand. In addition, a magnet arranged to face the other surface of the vertical plate, a driven roller that rotates in contact with the other surface, and a guide roller that rotates in contact with the horizontal plate are provided on the driven stand. Furthermore, a welding torch is mounted on at least the drive stand.

In the above-mentioned welding stand, the vertical plate is attracted by the respective magnets of the driving stand and the driven stand, the driving roller and the driven roller are pressed against the stand plate, and the loads of the driving stand and the driven stand are guided The rollers are supported by horizontal plates. Therefore, when the driving roller is driven, the driving stand and the driven stand travel along the vertical plate, and the distance from each stand to the horizontal plate is limited by the guide roller. Therefore, no matter which direction the vertical plate bends, the welding stand can be guided by the vertical plate to travel.

Since the welding torch is mounted on at least the driving stand, the intersection of the horizontal plate and the vertical plate can be welded by driving the driving stand and the driven stand while operating the welding torch. In particular, by mounting welding torches on both the drive stand and the driven stand, both sides of the vertical plate can be welded simultaneously.

In addition, the connecting member connecting the drive stand and the welding stand is configured to have a plurality of arm members rotatably connected to each other, so that the operation when the welding stand straddles the board can be easily performed. In particular, if a ring or the like is attached to two of the plurality of arm members in advance and lifted by a crane, the movement of the welding stand becomes easier.

Furthermore, by rotatably connecting the arm members to which rings and the like are mounted in advance, the driving stand and the driven stand can be separated from each other while being hoisted by a crane. Operation becomes easier.

In addition, when the driving stand and the driven stand are connected by the connecting member, either one of the driving stand or the driven stand is connected to two arm members arranged in parallel, and the other is rotatably connected to the One arm part is arranged correspondingly between the two arm parts, so that even if the vertical plate is bent, the driving stand and the driven stand can keep the mutual driving roller and driven roller in pressure contact with the surface of the vertical plate boot state. That is, it is possible to reliably adhere to the bending of the vertical plate (bending of the welding line).

In addition, since the contact portion of the guide roller with respect to the horizontal plate is made of 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, vibrations corresponding to the unevenness will be generated, and the vibration will be transmitted to the driving stand and the driven stand, which will become the vibration of the welding stand as a whole, and will cause vibration to the welding surface. Influence. According to the invention, however, this influence can be excluded.

Furthermore, by configuring the welding torch to be movable relative to the advancing direction of welding, when the welding torch is mounted on both the driving stand and the driven stand and welding is carried out at the same time, the two welding torches are staggered in the advancing direction from each other, thereby preventing the The "magnetic blowing phenomenon" caused by the horizontal plate and the vertical plate is accompanied by the strong magnetic force generated by the current, which causes the arc to bend or spread.

Description of drawings

Fig. 1 is a front view and side views illustrating the structure of a welding stand;

FIG. 2 is a diagram illustrating the structure of a drive stand;

Fig. 3 is a diagram illustrating a state in which a driving stand and a driven stand are separated by rotating a connecting member constituting the welding stand.

In the picture:

A-drive bench

B-driven bench

C-connection parts

D-horizontal plate

E-riser

F-welding gun

1-shell

2- magnet

3-bar

5- Drive motor

6a-Drive roller

6b, 6c-drive shaft

7- gear train

8-Transmission parts

9-Operation panel

10-guide roller

11-Welding torch holder

12-Height adjustment parts

12a, 12b-handles

18-bracket

18a-Fitting part

18b-Bolt

21-shell

22- handle

23-Follower roller

24-torch holder

25- Height adjustment part

25a, 25b - handle

26 - Moving Parts

26a - Slide guide

26b-rod

28-bracket

28a-Fitting part

28b-bolt

31～34-arm parts

35～37-Rotating parts

35a - Rotation shaft

35b-Bearing

35c - Rotation limiting plate

35d-handle

38-Hook

39-handle

Detailed ways

Hereinafter, preferred embodiments of the welding stand of the present invention will be described based on the drawings. Fig. 1 is a front view and side views illustrating the structure of a welding stand. FIG. 2 is a diagram illustrating the structure of a drive stand. Fig. 3 is a diagram illustrating a state in which a driving stand and a driven stand are separated by rotating a connecting member constituting the welding stand.

The welding stand shown in the figure is constructed by connecting a drive stand A and a driven stand B with a connecting member C. As shown in FIG. The welding stand is disposed astride the vertical plate E when welding the horizontal plate D, which is a first steel plate normally arranged horizontally, and the vertical plate E, which is a second steel plate which is approximately perpendicular to the horizontal plate D. On both sides of the vertical plate E, use the welding torch F to perform fillet weld welding at the same time.

The transverse plate D is made of a steel plate with a large area like a ship hull, and the vertical plate E is suitable for plates of different cross-sections and sizes as shown in Fig. 1 . In the present invention, the shape and size of the vertical board E are not limited, and it can be applied to a board with a preset maximum size.

In addition, it is not limited to the process in which both sides must be welded at the intersection of the horizontal plate D and the vertical plate E at the same time, and only one side may be welded. However, in the case of a girder, welding must be performed on both side surfaces of the vertical plate, and the welding stand of the present invention can perform such welding.

The drive stand A has a housing 1 , and a magnet 2 is arranged inside the housing 1 . By turning the rod 3 relative to the housing 1 , the magnet 2 can be moved inside the housing 1 . That is, when the rod 3 rotated to the position shown in Figure 1, the magnet 2 moved as shown in Figure 2 solid line and approached the vertical plate E, when the rod 3 rotated counterclockwise from the state shown in Figure 1, the magnet 2 Move away from the riser E as shown by the two-dot chain line in Fig. 2 . Therefore, with the rotation of the rod 3, a large attractive force acts on the vertical plate E, or the attractive force can be reduced.

The magnets are also arranged on the driven stand B. When the welding stand is driven, the magnets 2 of the driving stand A and the magnets of the driven stand B are arranged to attract the vertical plate E so as to sandwich the vertical plate E. The attractive force of the magnet 2 is not particularly limited, but it is preferably set in consideration of the weight of the welding stand and the weight of cables or cords acting on the welding torch F. In particular, it is preferable to make the attractive force of each magnet 2 smaller than the entire load of the welding stand in advance.

In this way, by setting the attractive force of the magnet 2 in advance to be smaller than the total load of the welding stand, a part of the total load acts on the horizontal plate D as a vertical load through the guide roller, and the effect of the vertical load acting at this time is In this case, the welding stand can always maintain a constant height direction position from the horizontal plate D.

The driving motor 5 is arranged inside the casing 1, and in addition, the driving shaft 6b, the driving roller 6a, and the driving shaft 6b on which the driving roller 6a is installed are respectively arranged on both ends sides of the traveling direction (arrow a, b direction in Fig. 1, the same below) of the casing 1. 6c. Drive motor 5 and drive shaft 6b are driven through gear train 7, and drive shaft 6b and drive shaft 6c are driven through transmission parts 8 such as chain or timing belt (timing belt). Therefore, when the drive motor 5 is rotated, the rotation drives the drive shaft 6b via the gear train 7, and further drives the drive shaft 6c via the transmission member 8, and the four drive rollers 6a rotate with this drive.

The drive roller 6a rotates in contact with the surface of the vertical plate E, and drives the welding stand. Therefore, it is comprised with the material which produces enough contact friction with the surface of the vertical board E. Such materials include steel rolls with knurled surfaces, rubber rolls, and other rolls, which can be used effectively.

In addition, since the drive roller 6a needs to maintain a stable contact state with respect to the vertical plate E, it is preferable that the surface is comprised with a flat surface.

In addition, an operation panel 9 is provided on the outer surface of the casing 1, and the direction of rotation and the rotational speed of the drive motor 5 are adjusted by operating switches and knobs arranged on the operation panel 9, thereby controlling the traveling direction of the welding stand. ,Driving speed.

Rotatable guide rollers 10 are respectively arranged at both end portions in the traveling direction of the lower surface of the housing 1 . The guide roller 10 is configured to be rotatable, is configured to be in contact with the surface of the horizontal plate D, and is configured to be rotatable as the drive frame A (welding frame) travels. In particular, the portion where the guide roller 10 is in contact with the horizontal plate D is made of rubber, and can absorb minute vibrations accompanying the traveling of the welding stand.

At least the portion of the guide roller 10 in contact with the horizontal plate D may be made of rubber. Therefore, a guide roller 10 entirely made of rubber or a guide roller 10 formed by cushioning rubber on the surface of the iron core may be selected.

The shape of the guide roller 10 is not particularly limited, but it is formed in a tapered shape so that even if there is a bend in the vertical plate E (the welding line will be bent), the welding stand can be smoothly attached to the vertical plate E. Board E. Thus, by forming the guide rollers 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 arranged on one side of the traveling direction of the drive stand A (in this embodiment, the side in the direction of arrow a in FIG. 1 ). This welding torch F is held on the welding torch holder 11 provided at the end of the casing 1, and is configured to be able to adjust the approach position or separation position relative to the vertical plate E by the handle 12a of the height adjustment member 12, and is also configured to be able to be adjusted by The handle 12b is used to adjust the approach position or separation position relative to the horizontal plate D. Therefore, by operating the height adjusting member 12, the distance (height) of the welding torch F to the horizontal plate D and the distance (height) to the vertical plate E can be adjusted, and an optimum welding distance can be set.

The driven pedestal B is configured to be driven by the driving pedestal A in the same direction without a driving member. That is, the travel of the driving gantry A is transmitted to the driven gantry B through the connecting member C, so that the driven gantry B can be driven by the driving gantry A.

The driven pedestal B has a casing 21, and a magnet (not shown) similar to the magnet 2 provided on the drive pedestal A is arranged inside the casing 21. The magnet is configured to move the inside of the casing 21 toward the vertical plate E or in the direction away from the vertical plate E in response to the rotation operation of the handle 22 .

Driven rollers 23 are respectively arranged on both ends of the housing 21 in the traveling direction and in the vertical direction. The driven roller 23 is configured to be rotatable with respect to the housing 21 , and is rotatable by contact friction with the surface of the vertical plate E as the driving stand A travels. In addition, the structure and shape of the driven roller 23 are not particularly limited, but it is preferable to use the same roller as the driving roller 6a.

At both ends of the lower surface of the housing 21 in the traveling direction, rotatable guide rollers 10 similar to the guide rollers 10 provided on the drive stand A are arranged.

A welding torch F is disposed on one side (in the present embodiment, the side in the direction of arrow a in FIG. 1 ) of the driven pedestal B in the traveling direction. This welding torch F is held on the welding torch holder 24, and the welding torch holder 24 is provided at the end of the housing 21, and is configured to be able to adjust the distance (height) of the welding torch F to the horizontal plate D and to the vertical plate E, and is configured so that even It is also possible to move relative to a certain travel direction in the direction in which welding is performed.

The torch holder 24 is configured such that its approach position or separation position relative to the vertical plate E can be adjusted by the handle 25 a of the height adjustment member 25 , and its approach position or separation position relative to the horizontal plate D can be adjusted by the handle 25 b. Therefore, an optimum welding distance can be set by adjusting the distance (height) between the welding torch F held by the welding torch holder 24 and the horizontal plate D and the distance (height) from the vertical plate E.

In addition, the torch holder 24 and the height adjusting member 25 are configured to be movable in the traveling direction by a moving member 26 disposed on the casing 21 . The moving part 26 includes a slide guide 26a that moves a bar (not shown) that integrates the torch holder 24 and the height adjusting part 25 in the traveling direction, and a rod 26b that The bar is fixed or unfixed on the slide guide 26a. And by releasing the fixation of the rod by the operation lever 26b and moving the rod along the slide guide 26a, the positions of the welding torch holder 24 and the height adjustment member 25 in the traveling direction can be adjusted within the length range of the slide guide 26a. Adjustment.

In the welding torch holder 24 configured as above, when performing fillet weld welding on both sides of the vertical plate E at the same time, it is not necessary to face the welding torch F installed on the drive stand A, and the position with respect to the traveling direction can be adjusted. precede or follow. Therefore, no magnetic blow is generated when each torch F is in operation.

The connecting part C has the following three functions, one is to connect the driving table A and the driven table B and transmit the driving force of the driving table A to the driven table B, and the other is to use the welding table The function that can be hoisted by a crane when the frame moves, and the third is the function that the drive frame A and the driven frame B are separated when hoisted by a crane, so that the vertical plate E can be avoided.

The connection part C is formed by connecting a plurality of arm parts in a rotatable manner. The number of arm members constituting the connecting member C is not particularly limited, but in this embodiment, there are four arm members 31 to 34 , and these arm members 31 to 34 are rotatably connected by rotating members 35 to 37 .

The arm members 31 to 33 are constituted by connecting two rods arranged in parallel, and the arm member 34 is constituted by one rod disposed substantially in the center of the arm members 31 to 33 . In particular, the arm parts 31 , 34 are formed with the same length as each other, and the arm parts 32 , 33 are also formed with the same length with each other. Furthermore, the arm member 31 is connected to the driving stand A, and the arm member 34 is connected to the driven stand B. As shown in FIG. Furthermore, the arm members 32 and 33 are arranged between the arm member 31 and the arm member 34 .

A bracket 18 is attached to the casing 1 constituting the drive stand A, and the bracket 18 is provided with a fitting portion 18 a for fitting end portions of two rod members constituting the arm member 31 . 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 with a bolt 18b to integrally connect them.

Also attached to the casing 21 constituting the driven stand B is a bracket 28 provided with a fitting portion 28 a for fitting an end portion of one bar member constituting the arm member 34 . In particular, an annular groove (not shown) is formed on the outer periphery of the lower end portion of the arm member 34, and is fitted into the fitting portion 28a of the bracket 28 and the bolt 28b is fitted into the annular groove so as to be relatively turn. In addition, when the bolt 28b is firmly fixed, the arm member 34 and the bracket 28 can be fixed and integrated.

Therefore, during the welding operation, the bolt 28b can be loosened to form a state where the front end portion of the bolt 28b is fitted into the annular groove so as to allow relative rotation, and when the welding work is completed and the welding stand is moved, the The bolts 28b are tightened to integrate both.

As described above, during the welding operation, the driven stand B is rotatable with respect to the arm member 34 around the arm member 34 . Therefore, when the driving platform A and the driven platform B respectively absorb the two surfaces of the vertical plate E while running, even if the bending of the plane occurs on the vertical plate E (the bending of the welding line or the vertical plate E within the allowable range In the case of bending), it can also follow the bending.

That is, when the driving stand A is traveling along the bending of the vertical board E, the driven stand B is attached to the bending of the vertical board under the adsorption effect of the magnet. The rotation of the stand B can absorb the change in the posture of the stand A with respect to the drive. Therefore, it can smoothly follow the curvature of the vertical board E as a stand for welding.

When the arm members 31, 34 are mounted on the brackets 18, 28 of the respective stands A, B, the dimension from the lower surface of the guide roller 10 of each stand A, B to the top of the arm members 31, 34 is set. For: approximately equal to the dimension to the top of the largest vertical plate E to be welded. By configuring the arm members 31 and 34 in this way, smooth welding can be performed even for the vertical plate E of the largest size.

Arm members 32 , 33 are rotatably connected to upper ends of arm members 31 , 34 via rotating members 35 , 36 , respectively, and arm member 32 and arm member 33 are also rotatably connected via rotating member 37 . Here, since the structures of the rotating members 35 to 37 rotatably connecting the arm members 31 to 34 are completely the same, the structure of the rotating member 35 connecting the arm members 31 and 32 will be described as a representative.

The rotating part 35 includes: a rotating shaft 35a, which rotatably connects the upper end of the arm part 31 and the lower end of the arm part 32; a bearing 35b, which supports the rotating shaft 35a and makes it rotatable; a rotation restricting plate 35c, which is mounted on On the lower end side of the arm member 32, long holes for restricting the rotation angle of the arm members 31, 32 are formed; 31 upper part.

In the rotating member 35 configured as described above, when the handle 35d is fastened firmly, the arm member 31 and the arm member 32 are integrally formed so as to be unable to rotate mutually. Therefore, during the welding operation by the welding stand, the connecting member C that fastens the handle 35d on each of the rotating members 35 to 37 is formed by a rigid body, so that the driving stand A, the connecting member C, and the driven stand can be connected to each other. B is rigidly formed into one body. Furthermore, by making it rigid in this way, the driving force of the drive frame A can be reliably transmitted to the driven frame B. FIG.

Also, by releasing the handle 35d of each of the rotating members 35 to 37, the arm members 31 to 34 constituting the connection member C can be rotated relative to each other within the range of the elongated hole formed in the rotation restricting plate 35c. Therefore, by separating the drive stand A and the driven stand B and installing them astride the riser E, it is possible to prepare for welding work or to be removed from the riser E.

A hook 38 is attached to an upper end portion of the arm members 31 and 34 constituting the connecting member C, and a handle 39 is attached to a rotating shaft 35a of a rotating member 37 connecting the arm member 32 and the arm member 33 .

When the welding stand is hoisted by a crane and moved, the hook 38 is hooked on the metal wire or hooked on the hook. In addition, the handle 39 is used when the operator moves the welding stand.

In particular, when the handle 35d of each rotating member 35-37 is loosened in advance when using the hook 38 to lift by a crane, each arm member 31-34 constituting the connecting member C as shown in FIG. The members 35 to 37 rotate around the center within the range allowed by the rotation limiting plate 35c, and with this rotation, the respective stages A and B are separated from each other.

Therefore, each stand A, B is sufficiently separated from the vertical plate E, and can be attached or detached without interfering with the vertical plate E in this state.

Next, the procedure for attaching the welding stand configured as described above to the vertical plate E will be briefly described. First, the handles 35c constituting each of the rotating members 35 to 37 are loosened in advance so that they can be rotated, and the bolts 28b of the bracket 28 of the driven stand B are firmly tightened in advance, so that the driven stand B and the arm member 34 Unrotatably formed into one piece.

Then, the welding torch F is detached from the welding torch holders 11 and 24 in advance, and the magnets 2 arranged on the stands A and B are also moved to positions where the adsorption force with respect to the vertical plate E is the smallest.

In the above state, the welding stand is lifted by the crane via the hook 38, and the welding stand maintains a posture in which the arm members 31-34 are rotated by the rotating members 35-37, and the stands A, B are separated to the maximum as shown in FIG. 3 . Keeping this state, the welding stand is moved to the position of the target vertical plate E and lowered, and the guide rollers 10 provided on the stands A and B come into contact with the horizontal plate D along with the lowering.

Next, the lifting by the crane is released, and the operator raises the handle 39 to bring the stands A and B close to the vertical plate E. FIG. After the stands A and B are close to the vertical board E, the lever 3 of the driving stand A and the handle 22 of the driven stand B are respectively operated to move the magnet 2 to the vertical board E side. By the movement of the magnet 2 , the stands A and B are attracted to the vertical plate E, respectively, and the driving roller 6 a and the driven roller 23 come into contact with the surface of the vertical plate E. As shown in FIG.

After confirming the contact state of the driving roller 6a and the driven roller 23 with respect to the surface of the vertical plate E, firmly fasten the handles 35d of the respective rotating members 35-37 constituting the connecting member C, so that the connecting member C is integrated. Since it cannot rotate, the driving stand A, the connection member C, and the driven stand B constituting the welding stand are formed as rigid bodies and constituted.

Thereafter, by loosening the fastening of the bolts 28 b of the bracket 28 provided on the driven stand B, the driven stand B is allowed to rotate around the arm member 34 .

The welding torch F is attached to the welding torch holders 11 and 24 of the stands A and B respectively. At this time, when the welding torch F is installed on the two welding torches 11, 24 and the two sides of the vertical plate E are welded on the horizontal plate D at the same time, the positions of the two welding torches F are mutually in the direction of welding (traveling of the welding stand). direction) is staggered. That is, the moving member 26 provided on the driven stand B is operated to move the torch holder 24 along the slide guide 26a, thereby adjusting the positions of the torch holder 24 and the height adjusting member 25 in the traveling direction.

Furthermore, the height adjustment members 12 and 25 provided on the respective stands A and B are operated so that the respective welding torches F are positioned at the intersections of the horizontal plates D and the vertical plates E.

By performing the series of operations described above, the welding stand is installed at the welding position of the horizontal plate D and the vertical plate E, and the vertical plate E can be attached by each stand A, B sandwiching the vertical plate E from both sides. Therefore, after that, by starting the welding by activating the welding torch F, and driving the driving stand A in the direction of the arrow a or the direction of the arrow b, good welding can be continued on both sides of the vertical plate E.

In the above state, part of the load of the welding stand including the welding torch F is supported by the vertical plate E by the attraction 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 distributing and supporting the load of the welding stand in two orthogonal directions, the welding stand does not float up from the horizontal plate D as it travels, and can stick to the surfaces of the horizontal plate D and the vertical plate E drive.

When the target welding is completed, the welding torch F is unloaded from the welding torch holders 11, 24 of each stand A, B, after that, the handle 35d of each rotating member 35-37 constituting the connecting member C is loosened, and the arm members 31-37 are 34 is rotatable, and the bolt 28b of the bracket 28 of the driven stand B is firmly fastened to fix the driven stand B with respect to the arm member 34 .

Hang the hook 38 on the crane, operate the rod 3 and the handle 22 of each stand A, B, and separate the magnet 2 from the vertical plate E. Then, it is hoisted by a crane, and with the hoisting at this time, each arm member 31 to 34 of the connecting member C rotates around the rotating members 35 to 37, and each stand A, B is detached from the surface of the vertical plate E, and welded. It is hoisted by a stand and moves to a desired position.

As described above, the work of attaching the welding stand to the horizontal plate D and the vertical plate E and the work of detaching the welding stand from the horizontal plate D and the vertical plate E are facilitated, and a single welding stand is used. The corners on both surfaces of the vertical panel E can be welded at the same time. Therefore, the work of monitoring the progress of welding becomes easy, and operability can be improved.

Industrial Applicability

The welding stand of the present invention is advantageously used when welding girders to hull members, and is also advantageously used when welding webs to flanges to manufacture T-shaped members.

Claims (4)

1. A stand for welding, which has a first steel plate and a second steel plate arranged approximately perpendicular to the first steel plate, and welds the intersection of the first steel plate and the second steel plate, characterized in that , The welding stand has: a driving stand arranged to face one surface of the second steel plate; a driven stand arranged to face the other surface of the second steel plate; and a connecting member. which connects the driving stand and the driven stand, and transmits the travel of the driving stand to the driven stand, The drive stand is provided with: a magnet disposed opposite to one surface of the second steel plate, a drive roller that rotates in contact with the one surface, a drive member that drives the drive roller, and a drive member that contacts and rotates the first steel plate. rotating guide rollers, The driven stand is provided with: a magnet arranged to face the other surface of the second steel plate, a driven roller that rotates in contact with the other surface, and a roller that rotates in contact with the first steel plate. guide roller, The connecting member has: a plurality of arm members rotatably connected to each other, and a rotating member that restricts the connected arm members so that they cannot rotate or unrestricts them so that they can rotate, A welding torch is mounted on at least the drive stand. 2. The welding stand according to claim 1, wherein: Either one of the driving stand or the driven stand is connected to two parallel arm members, and the other is rotatably connected to an arm member correspondingly arranged between the two arm members. 3. The welding stand according to claim 1 or 2, wherein A contact portion where the guide roller contacts the second steel plate is made of rubber. 4. The welding stand according to any one of claims 1 to 3, wherein: The welding torch is configured to be movable in a welding progress direction.

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