JPH09216062A - Mobile truck for fillet welding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the working efficiency and the reliability of the fillet welding work. SOLUTION: A traveling roller 23 and a traveling driving roller 34 which are capable of traveling with holding a T-shaped frame 14 are mounted on a first base plate 21, the traveling driving roller 34 is rotated, copying rollers 27, 25, 49 which are rolled on each supporting surface of the T-shaped frame 14 to perform the copying-traveling of the first base plate 1 are fitted, and a first welding torch 59 to perform the bottom fillet welding of the T-shaped frame 14 is mounted on the first base plate 1 through a second base plate 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled fillet welding trolley for carrying out fillet welding of a T-shaped frame material fixed to the lower surface of a horizontal lower plate in a shipbuilding, steel or pressure vessel.

[0002]

2. Description of the Related Art FIG. 6 shows an outline of a cylindrical pressure vessel as a member to be welded for foot fillet welding, and FIG. 7 shows an outline of a conventional self-propelled fillet welding carriage.

As shown in FIG. 6, a T-shaped frame member 102 is attached to the outer peripheral surface of a cylindrical pressure vessel 101, and the bottom of the T-shaped frame member 102 is usually subjected to fillet welding 103. In the conventional welding carriage that performs such fillet welding, as shown in FIG. 7, a T-shaped frame member 1 including a frame web 102a and a face plate 102b is provided on the lower surface of the lower plate (cylindrical pressure vessel) 101.
02 is attached. On the lower plate 101, adjacent to one side of the T-shaped frame member 102, the magnet rail 1
11 is mounted, and a rail rack 113 having a pair of racks 112 facing outward is attached to the magnet rail 111. Traveling trolley body 114
A pair of pinion gears 115 meshing with the rack 112 of the rail rack 113 are mounted, and one pinion gear 115 can be rotationally driven by a drive motor 116. Then, the welding torch 118 is attached to the carriage main body 114 by the support arm 117.

Therefore, when the drive motor 116 rotationally drives the pinion gear 115, the pinion gear 11 is rotated.
5 rolls while meshing with the rack 112,
14 moves along the rail rack 113, and at this time,
Fillet welding can be performed by the welding torch 118.

[0005]

However, in the above-mentioned conventional welding cart, the magnet rail 111, the rail rack 113, etc. are mounted on the portion where fillet welding is performed, that is, at the foot of the T-shaped frame member 102. If the welding range is wide, a long magnet rail 11 must be used.
1 and the rail rack 113 are required, and the mounting work is difficult. In addition, the position of the welding torch 118 changes depending on the portion where fillet welding is performed, and the magnet rail 11
Sometimes I couldn't wear something like 1.

Furthermore, the welding methods adopted are two types, MIG welding and TIG welding, and it is necessary to replace the torch suitable for each welding method. Then, there are two fillet welds on the front and back of the T-shaped frame member 102, and there is a demand for performing both at the same time in consideration of work efficiency.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a self-propelled fillet welding carriage which improves the work efficiency and reliability of the fillet welding operation.

[0008]

The self-propelled fillet welding trolley of the present invention for achieving the above-mentioned object performs fillet welding of a T-shaped frame material fixed to the lower surface of a horizontal lower plate at the foot. In a self-propelled fillet welding trolley, the trolley body and the T
A pair of traveling wheels for holding the V-shaped frame member so as to support the bogie main body along the T-shaped frame so that the bogie main body can roll on the supporting surface of the T-shaped frame member to form the T-shaped frame. A profiling wheel for profiling along a frame, a drive device for rotationally driving at least one of the pair of cruising wheels, and a fillet weld on at least one side of the T-shaped frame material mounted on the trolley body. It is characterized by comprising a first welding torch.

Therefore, the carriage main body can travel along the T-shaped frame member by the pair of traveling wheels holding the T-shaped frame member, and the copying wheels roll on the supporting surface of the T-shaped frame member. By doing so, the vehicle can travel stably following the T-shaped frame. In this state, when at least one of the pair of traveling wheels is rotationally driven by the drive device,
By rolling the traveling wheels on the supporting surface of the T-shaped frame member, the carriage main body can travel along the T-shaped frame member, and at this time, at least one side of the T-shaped frame member is moved by the first welding torch. It is possible to perform fillet welding at the feet.

The self-propelled fillet welding dolly of the present invention is
A trolley auxiliary body is attached to the trolley body via a connecting mechanism.
A second welding torch that is movably mounted at a supporting position and a retracting position on the V-shaped frame member, and that is provided with a second welding torch for performing fillet welding on the other side of the T-shaped frame member on the other side of the T-shaped frame member. It is a feature.

Therefore, the trolley body can travel freely along the T-shaped frame by the pair of traveling wheels holding the T-shaped frame material, and the copying wheels roll on the supporting surface of the T-shaped frame material. By doing so, it is possible to travel stably following the T-shaped frame, and further, the trolley auxiliary body attached to this trolley body via the connecting mechanism is moved to the supporting position. When at least one of the pair of traveling wheels is rotationally driven, the traveling wheel rolls on the supporting surface of the T-shaped frame member, so that the bogie main body can travel along the T-shaped frame. And, the second welding torch can perform the fillet welding on both sides of the T-shaped frame material.

[0012]

Embodiments of the present invention will be described below.

The self-propelled fillet welding dolly of the present invention is for carrying out fillet welding of a T-shaped frame material fixed to the lower surface of a horizontal lower plate at the foot, and the trolley body is horizontal of the T-shaped frame material. A pair of traveling wheels sandwich the portion, so that the traveling wheel is supported along the longitudinal direction of the T-shaped frame. Then, one of the pair of traveling wheels holding the T-shaped frame member can be rotationally driven by an electric motor as a drive device. Further, a plurality of copying wheels are mounted on the bogie main body, and each copying wheel is in contact with the vertical support surface and the horizontal support surface of the T-shaped frame member and is rotatably supported on this support surface. As a result, the bogie body can be run in a stable posture along the T-shaped frame. Then, a first welding torch for carrying out fillet welding on one side of the T-shaped frame member attached to the lower plate is attached to the trolley body.

Accordingly, in order to perform the fillet welding of the T-shaped frame material to the lower plate, one of the traveling wheels is driven to rotate by driving the drive motor, and the carriage main body has a pair of traveling wheels made of the T-shaped frame material. By rolling while holding the horizontal portion, it is possible to travel along the longitudinal direction of this T-shaped frame, and at this time, each copying wheel rolls on each supporting surface of the T-shaped frame material, The trolley body will travel in a stable posture. Then, while the trolley body is running, fillet welding of the T-shaped frame material is performed by the first welding torch.

Further, in the self-propelled fillet welding dolly of the present invention, a dolly auxiliary body is connected to the dolly body through a connecting mechanism such as a hinge, and the dolly auxiliary body is connected to the T-shaped frame member as the dolly body. A second welding torch, which is movable to an opposing support position and a retracted position separated from the T-shaped frame member, is mounted on the trolley auxiliary body for performing fillet welding on the other side of the T-shaped frame member.

Therefore, when one of the pair of traveling wheels is rotationally driven by the drive motor, the bogie body travels along the longitudinal direction of the T-shaped frame while being supported by the T-shaped frame member by the traveling wheels and the respective copying wheels. The first and second welding torches are used to
Fillet welding is performed on both sides of the glyph frame material.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view of a self-propelled fillet welding carriage according to an embodiment of the present invention, FIG. 2 is a side view of the self-propelled fillet welding carriage of this embodiment, and FIG. -III cross section, FIG. 4 shows a schematic view of a main part of the drive roller position adjusting device, and FIG.

The self-propelled fillet welding trolley of this embodiment is for carrying out fillet welding of a T-shaped frame material fixed to the lower surface of a horizontal lower plate at the foot. As shown in FIGS. 1, 2, and 3, a vertical frame web 12 is formed on the lower surface of the lower plate 11.
And a horizontal face plate 13 are attached to a T-shaped frame member 14. This T-shaped frame member 1
Fillet weld on both sides of No.4.

In the self-propelled fillet welding trolley of the present embodiment, the first substrate 21 as a trolley body has a substantially rectangular shape, and a pair of front and rear traveling rollers 23 are rotatably mounted by a holder 22. Front and rear traveling rollers 2
3 can roll on the upper surface of the face plate 13 of the T-shaped frame member 14. Further, a pair of front and rear web bearing rollers 25 are mounted on the first substrate 21 by the holder 24 for maintaining the posture, and the holder 2
A pair of front and rear face bearing rollers 27 are mounted by 6, and the web bearing roller 25 rolls on the side surface of the frame web 12 and the face bearing roller 27 rolls on the end surface of the face plate 13.

An opening 28 is formed in the central portion of the first substrate 21, and a pair of left and right rails 29, which are long in the vertical direction, are attached to both sides of the opening 28. The traveling drive motor 30 is attached to a motor board 31, and the motor board 31 is positioned so as to face the opening 28 of the first board 21 and is movably fitted to each rail 29 of the first board 21 on both sides. A pair of left and right sliders 32 are attached. The traveling drive motor 30 drive shaft 33 has a first
A traveling drive roller 34 is fixedly inserted through the opening 28 of the substrate 21 and rolls on the lower surface of the face plate 13 of the T-shaped frame member 14 at the tip thereof.

A mounting plate 35 is fixed to the first substrate 21 below the opening 28.
An operation rod 37 is movably supported by front and rear brackets 36 attached to the. A clamp handle 38, which is rotatable, is attached to the base end of the operation rod 37.
On the other hand, as shown in detail in FIG. 4, a pressing plate 41 that supports the motor substrate 31 is connected to the tip end portion by a screw rod 39 and a pair of nuts 40. The pressing plate 41 and the bracket 36 are connected to each other. A compression spring 42 is interposed between them.

Therefore, the traveling drive motor 30 has the motor substrate 31 movably supported by the rail 29 and the slider 32, so that the traveling drive roller 34 can change its distance with respect to the lower surface of the face plate 13. When the operation rod 37 is fixed by the clamp handle 38 and the compression spring 42 urges the pressing plate 41 upward, the motor drive substrate 31 is supported and the traveling drive roller 3 is supported.
4 can be pressed against the lower surface of the face plate 13. Further, at this time, as shown in detail in FIG. 4, the length of the operating rod 37 is changed by loosening the pair of nuts 40 and rotating the screw rod 39 to change the length of the operating rod 37 to the motor board 3 by the holding plate 41.
1, the traveling drive roller 34 can perform position adjustment with the lower surface of the face plate 13.

On the first substrate 21, the traveling roller 23 and the traveling driving roller 34 sandwich the face plate 13,
In addition, the web bearing roller 25 is the frame web 1.
The face bearing roller 27 contacts the end surface of the face plate 13 as well as the side surface of No. 2 to maintain the posture. When the traveling drive motor 30 is driven in this state, the traveling drive roller 34 causes the face plate 13 to move.
The lower surface of the first substrate 21 is rolled into the T-shaped frame member 14
Can be moved along the longitudinal direction of the.

A pair of left and right rails 43, which are long in the vertical direction, are attached to both sides of the first substrate 21. The second substrate 44 facing the first substrate 21 has a substantially C-shape, and a pair of left and right sliders 45 that are movably fitted to the rails 43 of the first substrate 21 are attached to the facing surface. ing. Further, holding blocks 46 are fixed to both sides of the first substrate 21 adjacent to the rail 43, and hold the lower end surface of the second substrate 44 via a compression spring 47. Further, a pair of front and rear copying rollers 49 are mounted on the upper part of the second substrate 44 by the holder 48 for maintaining the posture, and the copying rollers 49 roll on the lower surface of the lower plate 11.

A screw shaft 50 is rotatably mounted on the second substrate 44 in the vertical direction, and an adjusting handle 51 is fixedly attached to the end of the screw shaft 50.
A torch support base 52 is screwed onto the position 0. An arm holder 54 is attached to the torch support base 52 via a support shaft 53, and a base end portion of a torch holder arm 55 is attached to the arm holder 54 with a fixing screw 56. The tip of this torch holder arm 55 is T
The first welding torch 5 extends to the foot on one side of the V-shaped frame member 14 and is fixed by the torch holder 57 and the fixing screw 58.
9 are attached.

Therefore, when the screw shaft 50 is rotated by the adjusting handle 51, the torch support base 52 screwed to the screw shaft 50 moves up and down, and the first welding torch 59 supported by the torch holder arm 55 and the like is also moved. Move up and down in the same way, T
The tip position of the first welding torch 59 can be adjusted with respect to the foot on one side of the V-shaped frame member 14. Then, when the traveling drive motor 30 moves the first substrate 21 along the longitudinal direction of the T-shaped frame member 14,
The substrate 44 moves in the same direction while being held in the posture by the pair of front and rear copying rollers 49, and along with this movement, fillet welding can be performed on one foot of the T-shaped frame member 14 by the first welding torch 59. it can.

By the way, in the self-propelled fillet welding trolley of the present embodiment, it is possible to carry out the fillet welding of both sides of the T-shaped frame material in parallel at the same time. That is, the connection board 61 is rotatably connected to the lower portion of the first board 21 via a hinge 60 as a connection mechanism.
A first moving board 62 as a trolley auxiliary body is fixed to the connecting board 61. In addition, a regulation pin of the first movable substrate 62 is provided in a long hole 65 of a rotation regulation stopper 64, which is laterally extended to the first substrate 21 and whose base end is pivotally attached to the fixed substrate 63. 66 is engaged. Further, a pair of front and rear web bearing rollers 69 are provided on the first moving substrate 62 by a holder 67 and a spring 68 for maintaining the posture.
And a pair of front and rear face bearing rollers 71 are mounted by the holder 70. The web bearing roller 69 rolls on the side surface of the frame web 12, and the face bearing roller 71 rolls on the end surface of the face plate 13. To do.

Therefore, the first movable substrate 62 is retracted by the hinge 60 to a retracted position (solid line position in FIG. 1) separated from the T-shaped frame member 11 and a supporting position where the rollers 69 and 70 are in contact with the T-shaped frame member 11. (Position of alternate long and two short dashes line in FIG. 1)
When the restriction pin 66 of the first moving board 62 is engaged with the elongated hole 65 of the rotation restriction stopper 64, the position is held at each rotation position. At the supporting position of the first moving substrate 62, the attitude of the first moving substrate 62 is maintained by the web bearing roller 69 contacting the side surface of the frame web 12 and the face bearing roller 71 contacting the end surface of the face plate 13. It is held, and in this state, the traveling drive motor 30 for the first substrate 21 described above.
When is driven, the second movable substrate 62 together with the first substrate 21 can move along the longitudinal direction of the T-shaped frame member 14.

A pair of left and right rails 72, which are long in the vertical direction, are attached to both sides of the first moving board 62. The second moving substrate 73 facing the first moving substrate 62 is substantially C
A pair of left and right sliders 7 each having a V shape and oppositely movably fitted to each rail 72 of the first moving substrate 62.
4 are attached. Further, holding blocks 75 are fixed to both sides of the first moving board 62 adjacent to the rails 72, and hold a lower end surface of the second moving board 73 via a compression spring 76. Further, a pair of front and rear copying rollers 78 are mounted on the upper part of the second moving substrate 73 by a holder 77 for maintaining the posture, and the copying rollers 78 roll on the lower surface of the lower plate 11.

A screw shaft 79 is rotatably mounted on the second moving board 73 in the vertical direction, and an adjusting handle 80 is fixedly attached to the end of the screw shaft 79. The torch support base 81 is screwed. And
An arm holder 83 is attached to the torch support base 81 via a support shaft 82, and a base end portion of a torch holder arm 84 is attached to the arm holder 83 with a fixing screw 85. The tip portion of the torch holder arm 84 extends to the other foot of the T-shaped frame member 14, and the second welding torch 88 is attached by the torch holder 86 and the fixing screw 87.

Therefore, when the screw shaft 79 is rotated by the adjusting handle 80, the torch support base 81 screwed onto the screw shaft 79 moves up and down, and the second welding torch 88 supported via the torch holder arm 84 and the like. Move up and down in the same way, T
The tip position of the second welding torch 88 can be adjusted with respect to the foot on the other side of the V-shaped frame member 14. Then, when the traveling drive motor 30 moves the first movable substrate 62 along with the first substrate 21 along the longitudinal direction of the T-shaped frame member 14, the second movable substrate 73 is held in the posture by the pair of front and rear copying rollers 78. It moves in the same direction, and with this movement, the second welding torch 88
Fillet welding can be performed on the other foot of the frame member 14 on the other side.

Now, the fillet-welding work at the foot of the lower plate 11 and the T-shaped frame member 14 by the above-described self-propelled fillet-welding carriage of this embodiment will be described.

When carrying out the fillet welding of the T-shaped frame member 14 at the foot, first, the lower plate 11 and the T-shaped frame member 14 are fitted with the self-propelled fillet welding carriage of this embodiment. That is, as shown by the solid line in FIG. 1, the traveling roller 23 of the first substrate 21 and the traveling driving roller 34 hold the face plate 13, and the web bearing roller 25 contacts the side surface of the frame web 12, and The roller 27 is brought into contact with the end surface of the face plate 13 to maintain the posture of the first substrate 21. Further, the copying roller 49 of the second substrate 44 is brought into contact with the lower surface of the lower plate 11 to hold the posture of the second substrate 44.

On the other hand, the first moving substrate 62, which is in the retracted position shown by the solid line in FIG. 1, is rotated counterclockwise by the hinge 60 and moved to the supporting position. That is, as shown by the chain double-dashed line in FIG. 1, the web bearing roller 69 of the first moving substrate 62 is brought into contact with the side surface of the frame web 12, and the face bearing roller 71 is brought into contact with the end surface of the face plate 13 to make the first The posture of the moving substrate 62 is maintained. Further, the copying roller 78 of the second moving substrate 73
Is brought into contact with the lower surface of the lower plate 11 to maintain the posture of the second moving substrate 73.

When the traveling carriage of this embodiment is mounted in this manner, as shown in FIG. 5, the first frame is attached to the T-shaped frame member 14.
By holding the substrate 21 and the second substrate 44, the first welding torch 59 is positioned, and the first moving substrate 62 and the second moving torch 59 are positioned.
By holding the moving substrate 73, the second welding torch 88 is positioned. That is, the first welding torch 59 and the second welding torch 88 are provided on the plurality of rollers 23, 34, 25, 2.
Since 7, 49, 69, 71, and 78 come into contact with the respective support surfaces of the T-shaped frame member 14 and are allowed to roll, it becomes possible to move stably along the longitudinal direction of the T-shaped frame member 14.

Therefore, in this state, the traveling drive motor 30
When the driving drive roller 34 is driven, the traveling drive roller 34 rolls on the lower surface of the face plate 13, and the first substrate 21 and the first moving substrate 6
2 moves along the longitudinal direction of the T-shaped frame member 14,
The second substrate 44 and the second moving substrate 73 move together with the first substrate 21 and the first moving substrate 62. At this time, by energizing the first welding torch 59 and the second welding torch 88, it is possible to carry out the fillet welding on both sides of the T-shaped frame member 14 in parallel at the same time.

It should be noted that the welding torch to be mounted can be easily mounted and exchanged whether it is of MIG welding type, TIG welding type or any type.

[0039]

As described above in detail with reference to the embodiments, according to the self-propelled fillet welding dolly of the present invention, a T-shaped frame material is held between the dolly body and the dolly body. A pair of traveling wheels that are movably supported along the T-shaped frame member are mounted, and a trailing wheel that rolls on the supporting surface of the T-shaped frame member to travel along the T-shaped frame is mounted, and a drive device is mounted. Since at least one of the pair of traveling wheels can be rotationally driven by this, and the first welding torch for performing fillet welding at the foot side of at least one side of the T-shaped frame material is attached to this trolley body, it can be easily attached to a predetermined frame. It is possible to hold it, and it is possible to improve the work efficiency and reliability of the fillet welding work by traveling stably and accurately during the work.

Further, according to the self-propelled fillet welding dolly of the present invention, the dolly auxiliary body is movably mounted on the dolly body through the connecting mechanism at the supporting position and the retracting position on the T-shaped frame member, Since the second welding torch for performing the fillet welding on the other side of the T-shaped frame material is provided on this trolley auxiliary body, the fillet welding on the both sides of the predetermined frame material can be performed in parallel at the same time. The work efficiency of fillet welding work can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a self-propelled fillet welding carriage according to an embodiment of the present invention.

FIG. 2 is a side view of the self-propelled fillet welding trolley of the present embodiment.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a schematic view of a main part of a drive roller position adjusting device.

FIG. 5 is a schematic view of a main part of a copying roller device.

FIG. 6 is a schematic view of a cylindrical pressure vessel as a welding target member for performing fillet welding under the feet.

FIG. 7 is a schematic view of a conventional self-propelled fillet welding cart.

[Explanation of symbols]

 11 Lower Plate 12 Frame Web 13 Face Plate 14 T-Shaped Frame Material 21 First Substrate (Bogie Body) 23 Traveling Roller 25,69 Web Bearing Roller 27,71 Face Bearing Roller 30 Traveling Drive Motor 34 Traveling Drive Roller 44 Second Substrate 49 , 78 Copying roller 59 First welding torch 60 Hinge (coupling mechanism) 62 First moving substrate 64 Rotation restriction stopper 73 Second moving substrate 88 Second welding torch

Claims (2)

[Claims] 1. A self-propelled fillet welding trolley for performing fillet welding at the foot of a T-shaped frame material fixed to the lower surface of a horizontal lower plate, wherein the trolley body is held between the trolley body and the T-shaped frame material. A pair of traveling wheels that support the main body so that the main body can travel along the T-shaped frame, and a copy wheel that rolls on the supporting surface of the T-shaped frame material to make the bogie main body travel along the T-shaped frame. And a first welding torch that is mounted on the carriage body and that performs fillet welding on at least one side of the T-shaped frame material, the drive device rotatingly driving at least one of the pair of traveling wheels. A self-propelled fillet welding trolley characterized by this. 2. The self-propelled fillet welding trolley according to claim 1, wherein a trolley auxiliary body is movable to the trolley body between a supporting position and a retracting position on the T-shaped frame member through a coupling mechanism. A self-propelled fillet welding trolley, wherein the trolley auxiliary body is mounted and provided with a second welding torch for performing fillet welding on the other side of the T-shaped frame member.