JPS6138778Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the configuration of a traveling device installed in a welding device, and is particularly applicable to a relatively narrow welding area, and is installed in a welding device that is carried by itself or moved by a traction device and performs continuous welding. In the traveling device, a pulley is idly supported on a support shaft that is tilted in the traveling direction and configured to be able to change the direction of inclination, and the pulley is configured with a magnetic roller made of a permanent magnet or an electromagnet. The magnet roller is configured to travel while being attracted to the welding base material or a guide member attached to the base material.

For example, in a welded shipbuilding structure 1 as shown in FIG. 1, a large number of vertical plates 3, 3 are arranged substantially perpendicularly in parallel on the upper surface of a bottom plate 2, and a horizontal plate 4 is arranged perpendicularly to the longitudinal plates 3. Ru. The vertical plate 3 and the bottom plate 2 form a horizontal fillet weld 5.
are communicated through a scalloped hole 6 formed by removing a corner of the side plate 4 in order to apply an automatic welding device. and the horizontal fillet weld 5
The automatic welding equipment applied to the welding apparatus needs to be configured to easily pass through these scalloped holes 6, and at the same time needs to be able to accurately follow the welding line. Also, such welds are formed long,
Moreover, since it is often applied to narrow spaces, it is difficult to install travel guide rails as commonly used in the past. Therefore, a means for moving the welding device formed in a small size by connecting it to a wire rope, chain, etc. suspended over the fillet weld, or a guide pulley installed on the welding device or its trolley, is used to move the welding device as it travels. Means for guiding along the vertical plate 3 and the bottom plate 2 have been proposed, but the former requires a special traction device and requires large-scale equipment, while the latter If the pulley moves away from the weld or there is a slight obstacle, the pulley may float up and vibrate, making it difficult to achieve good welding.

The present invention has been made with attention to these points, and the traveling guide pulley is provided on the welding device directly or via a trolley device and is tilted so as to give a forward tilted posture with respect to the traveling direction of the traveling device. The bracket is configured to be rotatable 180 degrees via a support shaft, and the guide pulley is configured with a magnetic roller and is adsorbed to the base material while freely rotating or actively rotating. The welding device is configured to reliably follow the groove.

The present invention will be explained in detail below based on the drawings, which show an example of a specific implementation of the invention.
Similar to the embodiments described in the claims for utility model registration, the present invention is not limited to these embodiments, and may be used as is in other welding equipment or applied to other welding parts in accordance with the spirit of the above and later descriptions. can. Further, these configurations are not limited to the illustrated examples, and can be similarly implemented by appropriately changing the shape or design. 2 and 3 are a sketch and a side view illustrating a welding device 7 suitable for horizontal fillet welding of the welded structure 1 illustrated in FIG. Traveling wheels 11 and 12 are provided at the front and rear portions of the welding device main body 8 in the direction of movement, respectively, forming narrow stepped portions 8' and 8'. A torch 9 and a shield nozzle 10 covering the torch 9 are provided at the rear end of the welding device, and a mounting portion 1 for a traction chain 14 is provided at the front end.
4' is formed. Further, support pulleys 13, 13' are loosely provided below the front and rear ends of the narrow step portions 8', 8', and the pulleys 13, 13' abut against the top surface of the bottom plate 2 to support the welding device. Also, these pulleys 13,1
3' is recommended to be located closer to the vertical plate 3 than the center of gravity of the welding device.

Further, the running wheels 11 and 12 are attached to the respective narrow steps 8 and 8' in substantially the same manner, and the bottom plate wheels that contact the bottom plate 2 and the side plate wheels that contact the vertical plate 3 are formed in the same manner. The mounting position of the wheels on the bottom plate is shifted from the wheels on the side plate to the rear side and the front side of the welding device 7, respectively. 4 is a sectional view taken in the direction of the arrow in FIG. 8, and FIG. 5 is a sectional view taken in the direction of the arrow in FIG. 4, showing the traveling wheel 12 of the present invention. Note that since the running wheels 11 are formed in substantially the same manner as the wheels 12 as described above, the following description will be made with respect to one of the running wheels 12. In FIG. 4 and FIG. 5, the traveling pulleys 15, 1 of the present invention are shown.
5' and 16, 16' are all formed of magnetic rollers, and their supporting shafts 20, 20' are formed of a resin material or a non-magnetic material such as brass or gunmetal, to freely support the pulleys 15 and 16, respectively. These support shafts 20, 20' are installed in the swing bracket 19, and the installation is inclined to either side. Note that the degree of inclination of these was preferably 5 degrees.
Further, the swing bracket 19 is rotatably supported approximately at the center thereof by the pivot shaft 17. 1
8 is bushy. In addition, in the drawing, pulley 15,
15' is a pulley on the side plate side, and 16 and 16' indicate the bottom plate side. In addition, the direction and degree of inclination can be freely selected, and these are set so that when the welding device is moved in the direction of welding progress, the welding device receives a thrust action in the direction of the bottom plate and the direction of the vertical plate.
The figure shows the state along the bottom plate and the vertical plate 3 when the welding device moves toward the left in the drawing. The magnet rollers 15 and 15' are mounted on pivot shafts 2 that are tilted to a swing bracket 19 that is rotatable.
0,20', the swing bracket 1
The direction of inclination is changed by rotating 9 by 180 degrees at the travel change position of the welding device. Therefore, the welding device can be placed along the welded portion even in the reverse direction. Moreover, these running wheels 11 and 12 are 2
Since it is composed of a set of pulleys, running vibrations are not directly transmitted to the welding device via the pivot shaft 17, allowing the welding device 7 to run smoothly. Therefore, it is possible to travel with the torch 9 reliably directed toward the groove. In the above description, the traveling wheels are formed of permanent magnets, but in the present invention, they may be formed of magnetic rollers made of electromagnets, or the magnetic rollers may be configured to be actively driven. It can be implemented similarly. FIG. 6 shows an example of a structure in which a pulley 15 has a built-in electromagnetic coil 21.
It is non-rotatably supported via the winding core cylinder 22.
Reference numeral 23 indicates a cover plate of the pulley 15, and 24 indicates a power supply cord hole formed in the support shaft 20. The power supply cord 25 communicates with the welding apparatus main body 8 through a hole or groove in the swing bracket 19, and is supplied with power via a suitable control device. Moreover, the magnetic force can be adjusted by the feeding current. Note that in these embodiments, the guide pulley 15 is loosely supported, and the welding device 7 is driven by other traction means.
The traveling device of the present invention can be used even in a welding device or a truck equipped with a self-propelled device.

FIG. 7, FIG. 8, and FIG. 9 show an example, and the feed device 26 is provided on the bottom side of the welding device main body 8. The feeding device 26 is connected to the U-shaped formwork 27.
A support shaft 29 is loosely supported across both side walls of the support shaft 2.
A roller 28 and a gear 30 are fixed to 9. Further, a motor 32 is fixed to the bottom of the top surface of the U-shaped frame 27, and a pinion 31 is fixed to the output shaft of the motor 32 to engage with the gear 30. It is recommended that the feed roller 28 also be constructed of a magnetic roller. Further, the feed roller 28 may be provided with the bottom plate slightly protruding from the other pulleys 16, 16', or a thin elastic material may be provided on its circumferential surface to ensure reliable running.

Further, the present invention may be configured to actively drive the magnet rollers, and these driven magnet rollers may be provided in a part of the welding device main body 8 as in the previous example, or may be provided in the cart. However, since the rollers themselves are relatively large, it is recommended that they be provided in a part of a moving vehicle or a truck that propels and tows the welding device 7. FIG. 10 shows an example of this, in which the traveling wheels 3 of the present invention are mounted on the moving frame 33.
4, 34' is shown, and wheels 3 for side plates are shown.
At least two of the wheels 4 and the bottom plate wheels 34' are arranged in the traveling direction. and these wheels 34,
34' is formed in a flange shape, and the coils 35 and 35' are held non-rotatably between the flanges. Also, a gear 36 is attached to the side of the bottom plate wheel 34'.
is fixedly installed, and the gear frame 36 is engaged with a gear 37 that is fixedly installed on the output shaft of the drive motor 32 attached to the moving frame 33. The movable frame 33 has a built-in or connected DC power source, and the traveling wheels 34,
Electricity is supplied to 34' to create a magnetic field, causing wheel 34' to rotate.

Further, it is preferable that the traveling wheels used in the present invention are constructed so that their magnetic force can be adjusted, and in particular, in the case of wheels that are equipped with coils, the attraction force can be adjusted by adjusting the power supply current. Also, in the case of moving wheels using permanent magnets, wheels with different magnetic forces are used interchangeably.

As mentioned above, in the present invention, the running wheels of the welding equipment used in relatively narrow areas are constructed with magnetic rollers, and the spindle is inclined in the direction of travel, so that the running wheels can be reliably run along the base material. It is possible to perform welding in a stable state.
Moreover, the above spindle supports swing brackets etc.
Since it is constructed so that the direction of inclination can be changed by rotating it, it is possible to reliably follow the welding line even when traveling in the opposite direction.
In addition, since these mechanisms can be mechanically simple in structure, the transfer device can be made smaller and lighter, which is advantageous when applied to narrow spaces.

[Brief explanation of the drawing]

Figure 1 is a sketch showing an example of a welded structure, Figure 2
The figure is a sketch of a welding device that is applied to the example in FIG. 1 and utilizes the present invention, FIG. 3 is a side view of the welding device illustrated in FIG. 2, and FIG. 4 is a cross section taken along the cutting line - in FIG. 5 is a sectional view taken along the cutting line - in FIG. 4 in the direction of the arrow, FIG. 6 is a partially cutaway side view showing another embodiment of the present invention, and FIG. 7 is another configuration of the present invention. A side view showing an example, FIG. 8 is a partially enlarged view of the bottom side of FIG. 7, FIG. 9 is an enlarged view of the main part of FIG. 7 from the left, and FIG. 10 is another embodiment of the present invention. FIG. 1... Welded structure, 2... Bottom plate, 3... Vertical plate, 4... Horizontal plate, 5... Fillet welded part, 6...
Scallop hole, 7...Welding device, 8...Main body, 9
...Torch, 10...Shield nozzle, 11,1
2... Traveling wheel, 13... Support pulley, 14...
Towing cable, 15, 16... Magnetic pulley, 17...
...Axis, 19...Swing bracket, 20...
Spindle, 21... Cart, 22... Coil, 26...
Feeding device, 27... U-shaped frame, 28... Roller, 3
8...frame, 34...flank roller, 35...coil.

Claims (1)

[Claims for Utility Model Registration] (1) A traveling device of a welding device that travels along a groove formed in the longitudinal direction of a narrow part and continuously welds the groove, which A traveling guide roller tilted so as to give a forward leaning posture is freely supported on a bracket, and the bracket is pivotally supported via a support shaft so as to be rotatable at least 180 degrees, so that the direction of inclination of the traveling guide roller is freely supported. 1. A traveling device for a welding device, characterized in that the guide roller is configured to be changeable, and the guide roller is configured to be a magnetic roller, and is configured to roll while adhering to one or both of the base materials. (2) In claim 1 of the utility model registration claim, the welding device is a traveling device for fillet welding. (3) In claim 1 or 2 of the utility model registration claim, the welding device is a traveling device configured to be driven while being towed. (4) Scope of Utility Model Registration Claims 1, 2, or 3, the traveling device is configured such that the guide rollers provided on the traveling device are provided before and after the welding device. (5) Utility Model Registration The traveling device according to any one of claims 1 to 4, wherein the guide roller provided on the traveling device is configured to come into contact with the vertical plate and the horizontal plate.