JPH10118785A - Taper wheel type automatic welding carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute corner welding of advancing and retiring without regulating a copying wheel by making the running wheels of a carriage in taper wheels and running the carriage to the welding spot. SOLUTION: A taper wheel 2 as a driven wheel and a driving wheel 16 of a taper wheel type automatic welding carriage 1 are made of taper wheels. The taper wheel 2 is attached on a far position from an object 13 to be welded and the driving wheel 16 is attached on a near position to the object 13 to be welded. The diameter of the taper wheel 2 is made larger than the diameter of the driving wheel 16. When the driving wheel 16 is driven, the carriage 1 executes a fan type turning motion toward the driving wheel 16 of the small diameter, and approaches to the welding spot being parallel to the running direction. A copying wheel 12 is hitted to the object 13 to be welded, and it moves along the welding spot. The copying wheel 12 is made of only keeping the interval between the carriage 1 and a welding torch, it can be fixed within a definite dimension and the regulating working is not required. Because advancing and retiring are executed continuously, the multi-layer welding of a large distance welding can be automatized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a welding bogie which uses a tapered wheel as a running wheel of a welding bogie used for automating a fillet welding operation of a structure and which can easily change the running direction.

[0002]

2. Description of the Related Art In a conventional welding bogie, a running direction is specified by a method of attaching a copying wheel, so that welding work is usually performed in the right and left directions. Further, when the traveling direction is to be changed, it is necessary to adjust the mounting dimensions of the copying wheel using a hand tool. In addition, the mainstream of automatic welding bogies capable of performing multi-layer welding of large legs by automatic repetitive operations is a system having a rail for traveling.

[0003]

SUMMARY OF THE INVENTION In a conventional welding cart,
When performing fillet welding work, welding can only be performed in a fixed direction unless the copying wheel is adjusted.In addition, the method of adjusting the copying wheel to change the welding direction can also be done by using a hand tool to the welding bogie body with screws etc. If you loosen the attachment and adjust the distance from the welding bogie body to the tip of the copying wheel by adjusting the loading and unloading of the copying wheel support bracket, if you run in the opposite direction,
The welding trolley will move away from the welding location. Therefore, there is a problem that it is not easy to use both directions with the same welding carriage. Further, the copying wheel for guiding the welding bogie to the welding location with appropriate dimensions is also of a fixed type that is tightened with screws or the like, and the adjustment may be out of order due to the effect of carrying or vibration during work. In such a case, a displacement occurs in the welding portion, so that proper welding cannot be performed, and an operation of adjusting the copying wheel to a proper in-out size again occurs. SUMMARY OF THE INVENTION It is an object of the present invention to provide a welding bogie that can easily perform fillet welding in both forward and reverse directions by simply switching the traveling direction without adjusting the copying wheel by the above-described accompanying work.

[0004]

In order to achieve the above-mentioned object, in a tapered wheel type automatic welding bogie according to the present invention, a tapered wheel is adopted as a traveling wheel of the welding bogie so that a welding portion in a traveling direction can be formed. On the other hand, a force in the direction in which the welding bogie comes into contact is always applied, and proper fillet welding can be performed continuously in both forward and backward directions. In the case of an automatic welding bogie using this tapered wheel, a copying wheel is also required to guide the welding torch to the welding location with the appropriate dimensions.However, unlike conventional welding bogies, a fixed copying that does not require adjustment is required. Good with wheels. Therefore, a situation in which the adjustment is lost due to the effects of carrying or vibration during the operation does not occur. In addition, the taper wheel enables continuous fillet welding in both forward and reverse directions. One of the effects is that multi-layer welding, which is one of the welding methods, is used for large leg length welding. By linking with the mechanism, continuous and repeated automatic welding can be performed.

[0005]

In the tapered wheel type automatic welding bogie according to the present invention, the inner and outer circles have different diameters due to the tapered shape of the traveling wheel, so that the traveling wheel always makes a fan-shaped rotary motion toward the smaller diameter. By placing this smaller diameter on the welding point side, the welding bogie always comes into contact with the welding point parallel to the running direction, and the tapered wheel type automatic welding bogie runs along the fillet welding point .

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a self-welding bogie (1) of a tapered wheel type according to the present invention. A tapered wheel (2) is attached to a shaft (7) inserted into a bearing (6) fixed to a metal fitting (4) with a screw (5). Tapered wheel (2) is axle (7)
The power required for traveling generated by the drive motor (11) is transmitted to the tapered wheel (2) by the A gear (9) fixed to the vehicle with the bolt (8) and the B gear (10) with the drive motor (11). The running is started.

In the embodiment shown in FIG. 2, the copying wheel (1
2) The bolts (8) are fixed to the front and rear of the tapered wheel type automatic welding cart (1), and the material is welded to the fillet welding material (13) so that the welding torch (14) and the fillet weld location (15) are appropriate. Dimensions are maintained.

In the embodiment shown in FIG. 3, the running state of the tapered wheel type automatic welding trolley (1) is viewed from above, and is fixed to the outer steel plate (3) of the welding trolley body with bolts (8). The copying wheel (12) is attached to the front and rear with the same dimensions. The arrangement of the tapered wheel (2) in the bogie is triangular, and the drive wheel (16) is located at the fillet welded portion (1).
5) Only one inner wheel close to the side is required. This arrangement, the effect of the tapered wheel (2), the tapered wheel type automatic welding trolley (1) is applied to the material (13) to be subjected to fillet welding in both the forward and backward directions by the copying wheel (12) of the same size. , It is possible to run in parallel while contacting.

FIG. 4 is a perspective view of a tapered wheel type automatic welding trolley (1), a material (13) for fillet welding, and a copying wheel fixed to an outer steel plate (3) of the welding trolley body with bolts (8). This shows the relationship with (12), and this positional relationship is
First, the copying wheel (12) attached to the outer steel plate (3) of the welding bogie body comes into contact with the material (13) to be subjected to fillet welding to form an appropriate gap, and then the welding torch (14) is filled with welding. The welding is started according to the position (15).

[0010]

Since the present invention is configured as described above, it has the following effects. By adopting a tapered shape for the traveling wheels of the welding bogie, it is possible to perform traveling parallel to the material to be subjected to fillet welding even if the traveling direction is freely changed. In addition, since the copying wheels no longer need to adjust the direction of travel,
Only the gap between the welding bogie main body and the welding torch is maintained, and it can be fixed at a fixed size. Therefore, since a function such as a slide for adjustment is not required, there is no possibility that the operation is carried out or the screw is loosened due to vibration and the like. Furthermore, the adjustment work of the copying wheel, which has occurred in the conventional method, can be eliminated, and the welding accuracy defect due to the adjustment error can be eliminated. In addition, since the traveling direction can be freely changed, the forward and backward traveling is controlled by continuous control, and multi-layer welding performed in the case of large leg length welding can be automatically welded with the tapered wheel type automatic welding cart of the present invention. Becomes

[Brief description of the drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a plan view of the present invention.

FIG. 4 is a perspective view showing a use state of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Taper wheel type automatic welding trolley 2 Tapered wheel 3 Outer steel plate 4 Support hardware 5 Screw 6 Shaft 7 Bearing 8 Bolt 9 A gear 10B gear 11 Drive motor 12 Copying wheel 13 Material 14 Mig welding torch 15 Fillet welding spot 16 Drive wheel

Claims (1)

[Claims] (1) A tapered wheel is used as a traveling wheel of a welding bogie so that traveling in both forward and backward directions can be easily performed only by switching operation, and one driving wheel and two driven wheels are used. The present invention relates to a tapered wheel type automatic welding bogie characterized by a total of three wheels.