JPS6130777Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic gas shield welding device for steel pipe piles.

In the conventional welding device of this kind, as shown in FIG. 7, an annular rail 1 is attached to the groove side of a steel pipe pile 7, and a traveling cart 2 equipped with a torch 53, a wire feeder 51, and a wire reel 52 is moved onto the annular rail 1. It is deployed in

The torch 53 is located above the traveling carriage 2, and the wire feeding section 51 is located below the carriage 2, and the two are connected by a flexible conduit 8.

The conduit 8 is curved and bulges outward so that the wire 54 can be fed without difficulty, and the steel pipe pile 7
The distance l from the outer circumference to the outermost end of the conduit 8 is 650 ~
Reaches 800mm.

Since the steel pipe pile 7 is suspended and supported by the turret 9, if the space between the leg 91 of the turret 9 and the steel pipe pile 7 is narrow, the conduit 8 will collide with the turret 9 and interfere with the running of the trolley 2. Therefore, automatic welding cannot be performed,
We were forced to use inefficient semi-automatic welding or manual welding.

If the conduit 8 is bent close to the steel pipe pile 7 as shown by the two-dot chain line, there is a problem that the conduit bends sharply at the torch inlet, causing problems in wire feeding.

〔the purpose〕

The present invention improves the position of the wire feeder and eliminates the conduit by using a curved torch, which allows welding without any problems even if the welding work space between the turret leg and the steel pipe is narrow, and allows wire feed. An object of the present invention is to provide an automatic gas shield welding device capable of smoothly supplying gas.

〔composition〕

A wire feeding section is arranged above the trolley so that its position can be adjusted in the longitudinal and vertical directions with respect to the steel pipe pile, a curve torch is connected to the wire feeding section, and a wire reel is placed above the wire feeding section. It was deployed to

[Action and effect]

Since the conduit is omitted, the conduit does not collide with the turret as in the past, and even if the space between the turret and the steel pipe pile is narrow, there is no problem with the running of the bogie, and automatic welding is possible.

Additionally, wire feeding failures due to sharp bends in conventional conduits are also eliminated.

The present invention will be specifically described below based on embodiments shown in the drawings.

As shown in FIGS. 1 and 2, the welding equipment is basically the same as the conventional one: a ring rail 1 that is removably attached to a steel pipe pile 7, a traveling bogie 2 that runs on the ring rail 1,
a wire feeding section 51 disposed on the traveling trolley 2;
Welding torch 53 connected to wire feeding section 51
and a wire reel 52. A support stand 21 is removably disposed on the top surface of the traveling truck 2, and a front-back adjustment device 3, a vertical movement direction adjustment device 4, and a tilting plate 43 are installed at the top end of the stand 21.
A welding head mounting base 5 is provided via the welding head mounting base 5.

The longitudinal direction adjustment device 3 is attached to the stand 2 as shown in Fig. 3.
A hollow case 31 is protruded from the upper end of the case 3.
1, a screw shaft 32 is arranged horizontally and freely rotatable, and a handle 33 is attached to the end of the shaft 32 protruding from the case 31.
is provided protrudingly, and a horizontally long guide groove 34 is provided on the side of the case 31.
has been established.

The vertical adjustment device 4 is the same as the longitudinal adjustment device 3 mentioned above.
The block 40 protruding from the back is connected to the longitudinal adjustment device 3.
It is slidably fitted into the guide groove 34 of and screwed onto the horizontal screw shaft 32. Therefore, the longitudinal adjustment device 3
By turning the handle 33, the entire vertical adjustment device 4 can be moved back and forth.

A support plate 44 is disposed on the outer surface of the vertical adjustment device 4 so as to be slidable in the vertical direction, and a block 44a protruding from the back surface of the support plate 44 is inserted into the longitudinal guide groove 42 of the adjustment device 4. It is slidably fitted and screwed onto the vertical screw shaft 41.

By turning a handle 46 protruding from the end of the vertical screw shaft 41 extending from the case 45, the support plate 44 can be moved in the vertical direction.

On the support plate 44, a vertically long tilting plate 43 is attached to the ring track 1.
The lower end of the tilting plate 43 is pivotally supported by a support plate 44 by a pivot 47, and the upper end of the tilting plate 43 is provided so as to be tiltable in a vertical plane passing through the center of the tilting plate 43. A circular arc hole 48 is provided.

A clamp bolt 49 is fitted into the arc hole 48,
The bolt 49 is screwed into the support plate 44.

When the clamp bolt 49 is loosened, the tilting plate 43 can be tilted by the length of the arcuate hole 48 about the pivot 47.

The welding head mounting base 5 is fixed on the tilting plate 43, and the welding head mounting base 5 has a wire feeding section 5.
1, a curved torch 53 directly connected to the wire feeding section 51 with its tip facing the groove 71 of the steel pipe pile, and a wire reel 52 located above the wire feeding section 51. A shield gas supply hose 55 is connected to the curved torch 53, and a welding power cable 56 and other necessary control cables 57 are connected to the wire feed section 51.

As shown in FIG. 4, a windshield 6 is removably attached to the upper surface of the traveling truck 2. As shown in FIG.

The front surface of the windshield 6 on the steel pipe pile 7 side is open, and a notch hole 61 is opened from the upper wall to the rear wall with enough room for the curved torch 53 to move.
A curved torch 53 is fitted into the windshield 6, and a viewing window 62 with a light shielding glass is provided on the side of the windshield 6.

As described above, in the present invention, the wire feeding section 51 is arranged above the traveling truck 2, and the curve torch 53 is directly connected to the feeding section 51, so that the conduit for guiding the wire as in the past is unnecessary. Therefore, there is no problem in which the turret and the conduit collide with each other due to the outward bulge of the conduit, thereby interfering with the running of the truck 2.

Further, since the wire drawn downward from the wire reel 52 by the wire feeding section 51 is fed through the curved torch 53, there is no large resistance to feeding the wire, and the wire can be fed out smoothly.

For example, after forming the second layer weld bead B as shown in FIG. 5, the third layer weld bead B is formed as shown by the chain line.
When tilting the torch 53 to form _B1 , tilt plate 4
3, loosen the clamp bolt 49 to the tilting plate 4.
3 is slightly tilted in a direction in which its upper end moves away from the pile, and the tilting plate 43 is clamped again.

Since the wire reel 52 and the wire feeding section 51 are arranged on one tilting plate 43, they are tilted about the pivot shaft 47, but the relative positions of the wire reel 52 and the wire feeding section 51 do not change at all. Therefore, there is no wire reel and feeding section 51.
The distance between the wires 54 remains unchanged and the wires 54 are not tangled.

Furthermore, the height of the wire protrusion and the forward and backward position of the protrusion can be adjusted at the same time.

Since the range of the aiming torch is narrow simply by tilting the tilting plate 43, it may be impossible to form a weld bead at a desired position in a groove with a wide opening and a long depth. In this case, the target position of the welding head and therefore of the wire can be freely determined by the longitudinal adjustment device 3 or in combination with this, or by the vertical adjustment device 4 alone.

Further, the shield gas can be prevented from being blown away by the wind by the windshield 6. Outdoor on-site welding can be performed well.

After the welding work is completed, as shown in Fig. 6, the trolley 2,
It can be conveniently disassembled into three parts, the windshield 6 and the rest, for transportation.

Furthermore, the wire 54 pulled out from the wire reel 52 and the wire inserted into the torch 53 can be transported, and there is no need to cut the wire 54 to separate the wire reel 52 and wire feeding section 51, making preparations for the next welding work easier. You can see the time savings.

[Brief explanation of drawings]

Figure 1 is a slope view of the welding device, Figure 2 is a front view of the same as above, Figure 3 is a cross-sectional view of the vertical adjustment device and the front-rear adjustment device, Figure 4 is a slope view of the windshield, and Figure 5 is an open view. 6 is an exploded perspective view of the welding device, and FIG. 7 is a front view of the conventional example. DESCRIPTION OF SYMBOLS 1... Ring rail, 2... Cart, 3... Fore-and-aft direction adjustment device, 4... Vertical direction adjustment device, 53... Curve torch.

Claims (1)

[Scope of utility model registration request] In a welding device that welds piles while traveling on a ring rail, a torch, a wire feeder, and a wire reel are loaded on a running cart that is movable on a ring rail. A gas shield for a steel pipe pile, which is arranged above the steel pipe pile so that its position can be adjusted in the longitudinal and vertical directions, a curved torch is connected to the wire feeding section, and a wire reel is arranged above the wire feeding section. Automatic welding equipment.