JPH07185812A - Trackless self running carriage for welding - Google Patents

Abstract

PURPOSE:To execute fillet welding at the optimum condition only by supporting a copying arm to a carriage main body so that projecting length of the arm is adjustable and reciprocately driving an electromagnetic wheel. CONSTITUTION:A trackless self running welding carriage is provided with two pairs of wheels 10a, 10b magnetizable by electromagnetic force in the lower part of a carriage main body 1. A torch 2 is supported as adjustable for its angle by a torch angle adjuster 3. The torch 2 is vertically traveled by using a torch up/down moving member 6. A pair of a copying arm for an upright board push copying projected in the torch back/forth direction is provided at both ends of running direction. The arm support member, which supports the copying arm so that the projecting length is adjustable to the carriage main body, and the driving member to drive the electromagnetic wheel 10a, 10b free to reciprocately runare provided. By this method, the high quality weld zone is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railless self-propelled welding carriage for performing fillet welding of a welded structure along a standing plate, and particularly for running fillet welding by traveling on an inclined surface or a curved surface. The present invention relates to a preferable trackless self-propelled welding carriage.

[0002]

2. Description of the Related Art Rubber wheels are used in conventional small trackless self-propelled welding carriages for fillet welding.
When performing fillet welding of a welded structure having a trolley traveling surface that is an inclined surface or a curved surface, there is a drawback that the trolley tends to slip off the trolley traveling surface due to being pulled by a cable or due to its own weight or the like.

Therefore, the applicant of the present application has proposed a small trackless self-propelled welding carriage using electromagnetic wheels (Japanese Patent Laid-Open No. 5-212541).

During welding work, that is, when the bogie runs, this electromagnetic wheel is attracted to the running surface by electromagnetic force, so that the bogie may slide down even if the running surface is inclined or curved. It is possible to eliminate such problems. Moreover, unlike the case where the permanent magnet is used for the wheel, since the electromagnet is used for the wheel, when the truck is removed, the truck can be easily removed from the steel plate to be welded by cutting off the electromagnetic force. . Further, the carriage of the electromagnetic wheels is excellent in flexibility because it is not disturbed by the magnetic force even when the carriage is transported.

[0005]

By the way, in the case where fillet welding is carried out while the carriage is traveling on an inclined surface or a curved traveling surface, down welding is more acceptable than up welding (torch inclination angle). And welding conditions, etc.) are wide, it is possible to obtain a welded portion having a good bead shape etc. by always performing down welding.

However, a conventional welding carriage provided with electromagnetic wheels is provided with a pair of copying arms having different lengths at both ends in the traveling direction of the carriage. The shorter copying arm is the front side and the longer copying arm is the longer copying arm. The vehicle is run so that the vehicle is on the rear side, and thereby the vehicle is run with the front of the vehicle slightly facing the standing plate, thereby welding the vehicle along the welding line.

Therefore, since the traveling direction of the bogie for welding is always one direction, depending on the welding structure, it is necessary to carry out the up welding in which the bogie is welded while climbing the upslope, and the optimum construction condition (inclination). In many cases, it is not possible to adopt angle and welding conditions). Alternatively, it is necessary to prepare a dedicated dolly for a dolly (right-handed) in which the traveling direction is toward the front of the torch and a left-handed dolly, which complicates the welding work.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a railless self-propelled welding carriage that can travel in a reciprocating direction with a single carriage.

[0009]

A trackless self-propelled welding trolley according to the present invention includes a trolley body, four electromagnetic wheels magnetizable by electromagnetic force, and a torch supporting a torch angle adjustable. A torch support member, a position adjusting member for adjusting the position of the torch support member in the up-down direction and the torch front-rear direction, and a pair of copying arms for imitating standing plate pressing that protrude in the torch front-rear direction at both ends in the traveling direction. In a trackless self-propelled welding dolly having an arm supporting member for supporting the copying arm on the dolly body so that the protruding length thereof can be adjusted, and a driving member for driving the electromagnetic wheels so that the electromagnetic wheels can travel in the reciprocating direction. It is characterized by having.

[0010]

In the present invention, since the protrusion length of the copying arm can be changed, when the down welding is attempted, the cart is moved to the front of the torch, that is, to the right of the standing plate. When necessary, make the protrusion length of the right end copy arm shorter than the protrusion length of the left end copy arm,
When the electromagnetic wheels are driven so that the truck moves to the right, the truck travels to the right along the standing plate. Therefore, an arc is generated between the welding wire protruding from the torch and the welding portion to perform downward arc welding.

On the other hand, in the case of down welding, when it is necessary to move the carriage to the left toward the standing plate, the protruding length of the copying arm at the left end is made shorter than the protruding length of the copying arm at the right end, When the electromagnetic wheels are driven so that the truck moves to the left, the truck travels to the left along the standing plate. Therefore, down welding is performed while the cart is running to the left.

In this way, the carriage can travel in any direction, to the right and to the left, so it is always possible to weld in the downward direction, and a high quality welded portion can always be obtained.

[0013]

[Embodiments] Hereinafter, a railless self-propelled welding carriage according to embodiments of the present invention will be specifically described. 1 to 5 are views showing a railless self-propelled welding carriage according to this embodiment. FIG. 1 is a front view thereof, FIG. 2 is a plan view thereof, FIG. 3 is a left side view thereof, and FIG. The right side view and FIG. 5 are the bottom views. A welding torch 2 is supported on the carriage main body 1 by an angle adjuster 3 while being inclined with respect to a traveling surface. An angle adjusting lever 4 is attached to the angle adjuster 3, and the torch angle can be adjusted by moving the angle adjuster 3 by loosening the lever 4, and the angle adjuster 3 can be adjusted by tightening the lever 4. Can be fixed. A torch cable 5 is attached to the torch 2.

The angle adjuster 3 for supporting the torch 2 is supported by the vertical moving member 6, and the vertical moving member 6 moves up and down by the reciprocating rotation of the handle 7, and the torch moves up and down. The up-and-down moving member 6 is supported by the torch front-rear moving member 8. The front-rear moving member 8 moves in the front-rear direction by the reciprocating rotation of the handle 9, and the torch moves in the front-rear direction.

At the bottom of the carriage body 1, two pairs of wheels 10 are provided.
a, 10b and wheels 10c, 10d are axially supported by axles 11a and 11b, respectively. And the axle 11a,
Electromagnetic coils 13a and 13b are fitted to 11b, and by energizing the electromagnetic coils 13a and 13b, electromagnetic force can be applied to the axles 11a and 11b and the wheels 10a to 10d. The axles 11a and 11b are rotationally driven by a motor 12 provided at the center of the bogie main body 1.

Copying arms 15a and 15b are attached in a direction parallel to the axles 11a and 11b, respectively, in a direction orthogonal to the axles 11a and 11b of the truck main body 1, that is, at both ends in the traveling direction of the truck. 15a, 1
The reference numeral 5b projects from the trolley body 1 in the front direction of the torch. Support portions 16a, 16 are provided at the tips of the arms 15a, 15b.
b is attached, and rollers 17a and 17b are rotatably attached to the support portions 16a and 16b with their rotation axes being vertical.

The copying arms 15a and 15b have a structure shown in FIG.
As shown in Fig. 18, elongated holes 18 extending in the longitudinal direction of the arms, respectively.
a, 18b are provided, and the long holes 18a, 18b are provided.
By inserting the screw 19 into the carriage body 1 and screwing the screw 19 into the carriage body 1, the arms 15a and 15b are fixed to the carriage body 1. When changing the protruding length of the arms 15a and 15b, the screw 19 is loosened, the arms 15a and 15b are moved along the elongated holes 18a and 18b, and then the screw 19 is removed.
Just tighten.

The side surface of the trolley body 1 on the arm 15a side and 1
The limit switch 20 is provided on the side surface (not shown) on the 5b side.
Is attached so that the limit switch 20 comes into contact with the baffle plate and operates when the carriage reaches the final position of the welding line. This limit switch 2
The operation of 0 stops the traveling of the carriage.

A detection rod 21 is erected on the limit switch 20. When the baffle plate is not near the traveling surface but is considerably above the traveling surface, the detecting rod 21 contacts the baffle plate and the limit switch 20 is operated via the detecting rod 21. It is for.

A pair of handle struts 24 are erected on both ends of the trolley body 1 in the traveling direction of the body 1.
A U-shaped handle 22 is rotatably attached to the shaft 22 via a shaft 23.

Next, the operation of the railless welding carriage constructed as described above will be described. The carriage is transported via the handle 22 with the electromagnetic force turned off, and the carriage is placed on the welded structure that serves as the welding wire. Then, the handle 22 is rotated and laid down. At this time, as shown in FIG. 7, when the traveling direction of the carriage is the right direction in the figure, the right side copying arm 15a of the carriage body 1 is shortened and the left side copying arm 15 is made shorter.
Make b longer. Then, the welding wire is inserted into the torch 2, the welding wire is supplied with electric power through the torch, welding is started, and at the same time, the motor 12 is energized to rotate the wheels to move the carriage main body 1 to the right in FIG. 7. . In this case, since the copying arm 15a on the front side in the traveling direction is shorter, the trolley moves so that the roll 17a of the arm 15a on the front side in the traveling direction is constantly pressed against the standing plate, so that the trolley travels along the standing plate. To do. In this way, the dolly is driven and fillet welding is performed.

On the other hand, in the case of traveling the truck to the left in FIG. 7, in FIG. 7, by making the left copying arm 15b shorter than the right copying arm 15a, the truck is moved upright.
Drive 0 to the left in the figure.

The angle of the torch 2 is adjusted by the angle adjuster 3 by loosening the lever 4. The vertical position of the torch 2 is adjusted by the handle 7, and the front-back position of the torch 2 is adjusted by the handle 9.

In this way, since the carriage can be moved in either the right or left direction, fillet welding can always be performed in the downward welding state, and restrictions on welding construction conditions are reduced. Welding under optimal conditions.

The above-mentioned railless welding carriage is shown in FIG.
As shown in FIG. 3, the present invention is applied to fillet welding of a welded structure in which an L-shaped longe 36 is erected as a reinforcing material on the surface 35 of the bending block.

A flange portion 37 is provided on the head of the longe 36. In this way, even when the flange portion 37 is present on the head of the longe 36, the handle 22 can be tilted, so that the handle 22 does not interfere with the traveling of the carriage. Further, since the carriage of this embodiment is attracted to the bending block 35 by the electromagnetic force, the surface 3 of the bending flock 3
Even if 5 is curved, the bogie does not slide down, and stable welding work can be performed.

FIG. 9 is a perspective view showing a case where a trolley according to another embodiment of the present invention is provided with a longe 36 standing on a surface 35 of a bending block and welded. In the dolly of this embodiment, the handle 40 is a cantilever type. In addition to the effects similar to those of the embodiment shown in FIGS. 1 to 5, this embodiment is also easy to miniaturize because the handle 40 is cantilevered.

[0028]

As described above, according to the present invention,
Since the length of the copying arm can be changed, the carriage can be adapted to any direction, and down welding with a wide allowable range of welding work conditions can be performed on all objects. Therefore, fillet welding can be performed under optimum welding conditions,
A high quality weld can be obtained. Further, since the electromagnetic wheels are used, the trolley can be surely automatically copied and welded even on an inclined surface or a curved surface without slipping off.

[Brief description of drawings]

FIG. 1 is a front view showing a trackless welding carriage according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a left side view of the same.

FIG. 4 is a right side view of the same.

FIG. 5 is a bottom view of the same.

FIG. 6 is a view showing a method of attaching the arm.

FIG. 7 is a diagram showing a traveling direction of a carriage.

FIG. 8 is a bending block diagram showing an application example of the present invention.

FIG. 9 is an enlarged view of the same.

[Explanation of symbols]

 1; trolley body 2; torch 3; angle adjuster 4; angle lever 5; torch cable 6; torch vertical movement member 7, 9; handle 8; torch front and rear moving members 10a to 10d; wheels 11a, 11b; ; Copying arms 17a, 17b; Rollers 18a, 18b; Oblong hole 20; Limit switch 22; Handle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Fujimoto In front of Miyazaki, Fujisawa-shi, Kanagawa 100-1 Kawauchi, Fujisawa Works, Kobe Steel Co., Ltd. Kawachi 100-1 share company Kobe Steel Works Fujisawa Plant (72) Inventor Isao Yoshino Miyazaki Fujisawa City, Kanagawa Prefecture Miyazaki front character back Kawachi 100-1 share company Kobe Steel Works Fujisawa Plant (72) Inventor Suzuki Kuregoro Kanagawa Prefecture 557-1 Terayama-cho, Midori-ku, Yokohama-shi

Claims (2)

[Claims] 1. A dolly body and a magnetizable member 4 by an electromagnetic force.
Wheel electromagnetic wheels, a torch support member that supports the torch so that the torch angle can be adjusted, a position adjustment member that adjusts the position of the torch support member in the up-down direction and the torch front-rear direction, and the torch front-rear at both ends in the traveling direction. In a railless self-propelled welding dolly having a pair of copying arms for copying the standing plate pressing in the direction, an arm supporting member for supporting the copying arm on the dolly body so that the protruding length thereof can be adjusted, A railroad self-propelled welding trolley comprising: a drive member that drives the electromagnetic wheels so that the electromagnetic wheels can travel in a reciprocating direction. 2. The trackless self-propelled welding trolley according to claim 1, further comprising a handle foldably attached to the trolley body.