JPS60196264A - Underwater welding device - Google Patents

Abstract

PURPOSE:To provide a titled device which enables satisfactory remote welding with a reduced size and improved reliability and durability by providing a mechanism for guiding a torch in a dry type box for underwater welding and providing an electrical control part for driving said mechanism in a separately provided watertight cover. CONSTITUTION:A screw shaft 28 in a dry type box 13 is rotated to move upward or downward a slide stage 27 in a direction Y. The revolution of a splined shaft 24 is transmitted by a sprocket wheel 25 and a chain 35 to move laterally an X-axis block 37. The revolution of a spline shaft 20 is further transmitted to the revolutions of a worm wheel 38 and a splined shaft 39 as well as gears 40, 41 to move a ram 42 of a torch holder in the transverse direction Z. The revolution of the shafts 28, 24, 20 is controlled by an electrical control part including electric motors 2, 3, 4 in a separately provided watertight cover 1. The size of the device is thus reduced and the reliability and durability of the electrical control part are improved. The underwater remote welding is thus made satisfactory.

Description

[Detailed description of the invention] The present invention relates to improvements in underwater welding equipment.

When performing TIG welding, plasma welding, MIG welding, etc. underwater, it is necessary to completely isolate the area around the welding arc from water using some method to create a sealed nose atmosphere, and various methods have been proposed so far. I'm here. Inside, the welding tote is stored in a λ-shaped box.
There is a method of pressing this box against the object to be welded, then removing the water inside the box, replacing the inside of the box with shielding gas, and welding under the same conditions as atmospheric conditions.

In this method, an important issue is how to use a compact mechanism to drive the welding torch in the x, y, and z axes, which are three-dimensional orthogonal coordinate axes, so-called three-axis drive.

The present invention has been made in view of the above, and its purpose is to make the mechanism for driving the welding torch on three axes underwater more compact, as shown in Fig. 9, which allows underwater welding to be carried out remotely and approximately in the same way as in the atmosphere. The purpose of the present invention is to provide an underwater welding device that can perform under atmospheric conditions.

In order to achieve such an object, the present invention provides a welding torch and a welding torch.
The guidance for guiding in the Lt-X, Y, and Z axis directions is stored in a dry box, and electrical control parts such as a motor are installed separately from the above guidance and sealed with a cover, and the guidance is driven by the motor. It is characterized by comprising a spline shaft and a power transmission means such as a gear, a tin rocket, or a chain that converts the rotation of the spline shaft into movement of the welding torch in the X, Y, and Z axis directions.

A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a cutaway side view of the underwater welding device according to the present invention, and FIG.
The figure is a fracture pressure surface view of the same device, FIG. 3 is a plan view showing the arrangement of motors of the same device, and FIG.

Figures 5 and 6 are lines B-B and C-C@ in Figure 1, respectively.
FIG. 7 is a cross-sectional view taken along the line DD, and FIG. 7 is a cross-sectional view taken along the line E-E in FIG.

In the figure, 13 is a box-shaped dry box.

The - side of this is open, and a joint member 14 to be in contact with the part to be welded is attached to this opening, and a single cell sponge, com, etc. A molded sealing material 15 is pasted. Inside this dry box 13 is a welding torch 46. Wire feeding guide 48
etc. are stored.

By the way, the upper surface of the dry box 13 is covered with a motor base plate 12, and on the motor base plate 12, the motors 2, 3, 4.5 and a wire reel 6 on which welding wire is wound in a small groove are mounted. There are nine installed. The motors 2, 3.4 are for moving the welding torch 46 in the left and right (X direction), up and down (Y direction), forward and backward directions (Z direction), respectively, in FIG. , motor 5 is for feeding the welding wire.

These various motors 2, 3, 4.5, wire reel 6, etc. are covered by a cover IVC and sealed from water. Also, in the vicinity of the motors 2, 3, and 4, there is a stop device 7a1 at both ends of the spline shaft 24°39.20 in the dry box 13.
7bt γC is provided. The fourth filling shows the both-end stopping device 7b (both-end stopping devices 7a and 7C have the same configuration)
.

In Figure 4, 9 is a limit switch and 10 is a dog)
The operating points of the upper and lower limit switches 90 are determined according to the stroke of the screw shaft 28. Furthermore, since the movement of the screw shaft 28 is caused by the rotation of the motor 3, the stroke of the dog lO can be controlled by the pitch of the screw of the screw shaft 51 and the number of teeth of the gear meshing with the gear 11 on the output shaft side of the motor 3. Therefore, the both-end stop device 7bt can be made smaller and more compact. Spline shaft 24, 20.3
Similar stroke settings are made for 9.

On the other hand, as shown in FIG. 2, the dry box 13 is connected to a shield gas supply v16 for filling shield gas in the dry box 13 and a drain pipe 17 for discharging water inside the dry box 13 to the outside. I'm here. The spline shafts 20.24 are rotatably supported by the support plates 31, 32, and each spline shaft 20.24 is rotatably supported by the support plates 31, 32.
Gears 19 and 23 are fixed to the upper end of 24, and gear 19.23 meshes with gear 18.22, which is fixed to the output shaft side of fL%-2. . A slide stage 27 is supported on both spline shafts 20, 24 via bearing blocks 26a, 26b so as to be vertically movable.
At the center of the slide stage 27 is screwed a screw shaft 28 which is rotationally driven by the motor 3. The slide stage 27 is guided by two guide shafts 29 and 30 as shown in FIG.

Further, as shown in FIG. 5, two guide shafts 39A, upper and lower, are provided between the bearing blocks 26a and 26b.

39B is installed), and this is the guide shaft 39A.

39B, an X-axis block 37 is slidably supported. A tin rocket 2 is attached to the spline shaft 24.
A small spool 34 is attached to the slide stage 27 via a metal fitting 33. A chain 35 is attached between the sprocket 25 and the small spool 34. is wrapped around. This chain 35
The wire rope 35b is made up of a chain 35a and a wire rope 35b, and the end of the wire rope 35b is wound around the small spool 34 and is tied to the X-axis block 37.

On the other hand, the intermediate Ki miraohm 1 of the spline shaft 20 is connected to the worm 21, and a worm gear 38 is meshed with the worm 21 perpendicularly to the worm 21.

The worm gear 38 is connected to one end of the spline shaft 39. A gear 40 is attached to the center of the spline shaft 39, and the gear 40 meshes with a gear 41 rotatably supported on a shaft 45 of the X-axis block 37. Further, guide shafts 43 and 44 of a slider 50 that moves in the Z-axis direction are inserted into the lower part of the X-axis block 37, and the welding torch 46 and wire feeding guide 48 are supported by the #slider 50. There is. A rank gear 42 is provided on the slider 50, and the gear 41 meshes with the rack gear 42.

In addition, in FIG. 1, 47 is a power cable.

Although not shown, the outer surface of the dry box 13 is provided with a suction cup and an air cylinder for attaching and fixing the dry box 13' to the workpiece to be welded.

Next, the operation of this underwater welding device will be explained.

When the motor 2 is driven, this rotational force is transmitted to the spline shaft 24 via the gears 22 and 23, and the spline shaft 2
4 is rotationally driven. and.

The sprocket 25 rotates together with the spline shaft 240 rotations, and the X-axis block 37 moves in the X direction via the shaft 35. As a result, the welding torch 46 and wire feeding guide 48 move in the 2X direction. It can be moved.

In addition, the screw shaft 2 connected to the motor 3 drives the motor 3.
8 is rotationally driven fL, and as the screw shaft 28 rotates, the slide stage 27 screwed into and 9 moves up and down, and as a result, the welding torch 46 and wire feeding guide 48'l (move in the Y-axis direction) I can do it.

Furthermore, if the motor 4 is driven, this rotational force is applied to the gear 18.
The rotational force is transmitted to the spline shaft 2o through the shaft 9t, and the spline shaft 20 and the worm 21 fixed thereto are rotationally driven. This rotation of the worm 21 causes the worm gear 38 meshing with the worm to rotate, and this rotational force is applied to the spline shaft 39. The signal is transmitted to gears 40 and 41. The rack gear 42 meshes with the rotation of the gear 41.
The slider 50 is moved in the Z-axis direction, and as a result,
Welding torch 46 and wire feeding guide 48? It can be moved in the rZ-axis direction.

As described above, in the mechanism that drives the welding torch three axes in the lx, y, and z axes, the motors are installed separately from the dry box and sealed from water, and the guidance is made more compact. Durability is improved and the dry box can be made smaller. and.

With this underwater welding device, underwater welding can be done remotely.

Moreover, it can be carried out satisfactorily under an atmosphere similar to that in the air.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of the underwater welding device according to the present invention, and FIG.
The figure is a fracture pressure surface view of the same device, FIG. 3 is a plan view showing the arrangement of motors of the same device, and FIG. Figures 5 and 6, Figure 1 line B-B, line C-C, respectively.
FIG. 7 is a sectional view taken along line DD and FIG. 7 is a sectional view taken along line E-E in FIG. Inside the drawing. 2.3 and 4.5 are motors. 13 is a dry box. 18.19, 21, 22, 23, 38, 40°41.4
2 is a gear. 20.24.394″l spline shaft. 25 is a tin rocket, 27 is a slide stage. 34 is a small spool. 35 is a chain. 37 is an X-axis block. 46 is a welding torch. 48 is a wire feeding guide. 50 is It is a slider. Patent applicant: Hokkaido Electric Power Co., Ltd. Kansai Electric Power Co., Ltd. Shikoku Electric Power Co., Ltd. Kyushu Electric Power Co., Ltd. Japan Atomic Power Co., Ltd. Mitsubishi Heavy Industries, Ltd. Sub-agent Patent Attorney Shibe Mitsuishi (and one other person) Figure 3, Figure 4 Figure b Figure 5 9-0- Figure 6, page 1 continued ■ Inventor Shinya Yamatoku @ Inventor Hiromasa Kamei @ Inventor Ima 1) Takehiko @ Inventor Ike 1) Takao @ Inventor Shoji Kushimoto @ Invention Yukihiro Kawai @ Inventor Nakura Self-protection 0 Inventor Takashi Ishi 2-1-8 Watanabe-dori, Chuo-ku, Fukuoka Kyushu Electric Power Co., Ltd. 1-6-1 Otemachi, Chiyoda-ku, Tokyo Japan Atomic Power Co., Ltd. Sand Research Inside the office

Claims (1)

[Claims] In an underwater welding device in which a mechanism for moving the welding torch and the welding torch in the X, Y, and Z axes directions is housed in a box, guidance for guiding the welding torch and the welding torch in the X, Y, and Z axes directions is provided. In addition to storing it in a dry box, electric control parts such as a motor are installed separately from the above-mentioned guidance and sealed with a cover, and the guidance is driven by a spline shaft driven by the motor, and the rotation of the spline shaft is controlled by the An underwater welding device characterized by comprising a power transmission means such as a gear, a tin rocket, or a chain that converts movement in the , Y, and Z axis directions.