KR20200086135A - Non Rail Electro Gas Welding Apparatus for Horizontal Butt Welding - Google Patents

Abstract

The present invention relates to an apparatus for performing electrogas welding for horizontal butt welding in a non-rail manner. The apparatus includes: a cart (10) equipped with traveling wheels (11), magnets (12), and a torch (14) and capable of performing welding by traveling along a welding groove; a guide roller (20) installed on the front of the cart (10) to be able to change the posture and capable of maintaining contact with the welding groove during traveling; a detection means mounted to detect traveling and welding states of the cart (10); and a controller (40) for generating an output set in response to a signal input from the detection means. Accordingly, the apparatus can require no investment in high-priced rails and reduce the time for which rails are moved and attached or detached when horizontal butt welding is performed between upper and lower blocks of a large ship, and can simplify the entire equipment, thereby enabling internal welding.

Description

Non-rail horizontal gas welding device {Non Rail Electro Gas Welding Apparatus for Horizontal Butt Welding}

The present invention relates to a gas welding apparatus, and more particularly, to a railless butt-free electro gas welding apparatus for performing welding without rails on an extension line of a horizontal butt electro gas welding.

In general, the horizontal improvement part of the block and the part where the block is assembled at the ship construction site constructs an improvement angle into the hull and performs manual welding by an electro-gas welding (EGW) method. In general, EGW is a method using a rail. Four to twenty rails are attached to the upper part of the rail at regular intervals in advance. When the rail is mounted on the iron plate, the carriage is attached to the rail to perform the work.

However, when the rail is attached, it must be transported to any scaffold by using a aerial work vehicle. The rail weighs more than 10kg, and high-altitude work is inevitable, which carries a risk. The rails are very expensive and need water for maintenance.

Korean Patent Publication No. 2009-0026542 (Preceding Document 1), Korean Registered Patent Publication No. 111648 (Preceding Document 2), etc. are known as prior art documents that can be referred to in this regard.

Prior Document 1 is installed on the upper portion of the main body to perform welding; A three-dimensional guide roller installed on one side of the main body and capable of continuously running a straight or curved welding portion; It is installed on the lower portion of the body, a plurality of drive wheels are provided with a ferromagnetic metal outer ring. Accordingly, it is expected that the effect of performing a stable welding while continuously running the straight line and the curve smoothly.

Prior Art Document 2 is a welding carriage including a moving wheel, a traveling bogie having a traveling motor, a weaving mechanism portion having a weaving motor and a welding torch, and an operation panel portion, so that the operation panel portion sets the working angle of the welding torch to a desired value. It has the function of rotating the center of the welding torch. Accordingly, it is expected that productivity will be improved by automatic welding corresponding to changes in the height of formation of various horizontal welding joints.

However, according to the above-mentioned prior literature, it is insufficient to be applied to horizontal butt welding between upper and lower blocks of a large ship such as LNGC, showing room for improvement.

Korean Patent Application Publication No. 2009-0026542 "Carriage of the automatic rail welding device" (published date: March 13, 2009) Korean Registered Patent Publication No. 1161548 "Mullrail horizontal welding carriage" (published date: 2012.07.03.)

An object of the present invention for improving the conventional problems as described above is to provide a railless buttock electro-gas welding device for improving welding efficiency and productivity by enabling various welding based on driving with a railless butt joint. To have.

In addition, the present invention is to provide a railless butt-less electro-gas welding device capable of performing horizontal welding inside a hull based on weightlessness of rails and equipment.

In order to achieve the above object, the present invention is an apparatus for performing horizontal butt electro-gas welding in a railless manner: a traveling wheel, a magnet, a torch, and a vehicle capable of welding by traveling along welding improvement; A guide roller installed on the front surface of the cart to be able to change posture and to improve welding and maintain contact state while driving; Detection means mounted to detect traveling and welding conditions of the bogie; And a controller that generates a set output in response to the signal input from the detection means.

As a detailed configuration of the present invention, the bogie and the guide roller are characterized by having an inclination angle of 1 to 10 degrees.

As a modification of the present invention, the guide roller is characterized in that it is configured to be able to move up and down through a rotor connected to the end of the support.

As another modified example of the present invention, the bogie is further characterized by further comprising a magnetic force regulator that fluctuates magnetic force by an electrical signal.

As a detailed configuration of the present invention, the bogie is further characterized in that it further includes a torch and a feeder that causes the position fluctuations of the copper alloy, respectively.

As a detailed configuration of the present invention, the detection means includes an image detector for detecting driving and welding conditions, an angle detector for detecting the angle of the cart corresponding to the welding improvement, and a position detector for detecting a positional change between the torch and the copper alloy. It is characterized by.

According to the present invention as described above, in the horizontal butt welding between the upper and lower blocks of a large ship, there is no need to invest in expensive rails, reduce rail movement and attaching and demolition time, and simplify the entire equipment, thereby enabling internal welding.

1 is a schematic diagram showing the overall structure of a device according to the present invention
2 and 3 is a schematic view showing the running state of the device according to the present invention
Figure 4 is a schematic diagram showing the main operation of the device according to the present invention
5 is a schematic view showing a welding operation of the device according to the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention proposes an apparatus for performing horizontal butt-electro gas welding in a railless manner. In order to weld the upper and lower blocks by welding at the construction site of a large ship such as LNGC, dozens of expensive rails must be possessed and a process of installing these rails on a truck or lift car is required. The present invention excludes such an expensive rail and uses a railless method that can be welded without installation and disassembly, and is targeted at a horizontal butt electrogas welding performed on the outer wall of the hull, but is not limited thereto.

According to the present invention, the vehicle 10 that can be welded by traveling along the welding improvement has a structure in which the traveling wheel 11, the magnet 12, and the torch 14 are mounted. The bogie 10 keeps the height low even if the length of the horizontal/vertical length is increased in terms of preventing weakening of the adhesion to the outer wall of the hull. The driving wheel 11 is preferably formed by adding urethane resin to the outer surface based on the annular magnet 12. The inside of the bogie 10 is equipped with a GMAW torch 14 and a copper coin 16 so as to face the bottom surface. In addition, by attaching a weaving mechanism to the torch 14, EGW welding is possible and configured to replace the torch 14 to make a surface bead.

At this time, the magnet 12 installed on the driving wheel 11 is preferably configured to turn on and off the magnetic force in a magswitch method.

Meanwhile, as shown in FIG. 1, the traveler 30 is connected to one side of the front and rear travel wheels 11, and the front and rear travel wheels 11 are connected by belts or chains. The traveler 30 may be provided with a reduction motor, a link, and the like, along with a driving motor capable of driving forward and backward.

In addition, according to the present invention, a guide roller 20 capable of improving welding and maintaining a contact state during driving forms a structure in which posture can be changed on the front surface of the truck 10. 1 and 2, one guide roller 20 is illustrated to be connected to the bogie 10 via a support 22. The guide roller 20 is rotatably supported, and holds the upper surface and the contact portion 44 of welding improvement. The posture change of the guide roller 20 means a position change relative to the bogie 10.

As a detailed configuration of the present invention, the bogie 10 and the guide roller 20 are characterized by having an inclination angle of 1 to 10 degrees. It is preferable that the guide roller 20 maintains an inclination angle of 1 to 10 degrees with respect to the bogie 10 because a slight slip of the traveling wheel 11 occurs while the bogie 10 runs along the welding line. Of course, it is preferable that the inclination angle is varied in response to the welding environment.

As a modification of the present invention, the guide roller 20 is characterized in that it is configured to be able to move up and down through a rotor 32 connected to the end of the support 22. Since the guide roller 20 moves along the welding line from the front surface of the bogie 10, a non-welding section occurs at the administrative end of welding. The rotating machine 32 rotates the end of the connected support 22 via a hinge to induce vertical movement of the guide roller 20, so that the non-contact section can be reduced to a minimum.

On the other hand, although not shown in the figure, the guide roller 20 may further include a configuration that rotates left and right in response to the bogie 10. The posture of the guide roller 20 is adjusted in a direction orthogonal to the vertical direction by the rotor 32.

As a detailed configuration of the present invention, the bogie (10) is further characterized in that it further comprises a transporter (24) (26) that causes a change in the position of the torch (14) and the copper alloy (16), respectively. In Figure 1, the transporter 24 of the torch 14 is illustrated as a structure that rotates left and right, and the transporter 26 of the copper alloy 16 is illustrated as a structure that moves from side to side on the guide rail. Of course, depending on the working environment, the structure of the transporters 24 and 26 may be selected in various combinations.

As another modification of the present invention, the bogie 10 is further characterized in that it further comprises a magnetic force regulator 38 that changes the magnetic force by an electrical signal. Since the sliding friction force of the driving wheel 11 is caused by the state of the outer wall of the hull, the weather condition, etc., it is preferable to increase or decrease the magnetic force using the magnetic force regulator 38. The magnetic regulator 38 is formed of an electromagnet structure and is installed in 1 to 4 places at an appropriate position on the bogie 10.

In addition, according to the present invention, it is a structure in which the detection means is mounted to detect the traveling and welding state of the bogie 10. The bogie 10 forms a welding bead 42 of multiple passes while driving along the improvement of the welding line. The state of being welded while driving the outer wall of the hull is generated in real time through the detection means.

As a detailed configuration of the present invention, the detection means is the same as the image detector 34 for detecting the traveling and welding state, the angle detector 35 for detecting the angle of the bogie 10 corresponding to the welding improvement, the torch 14 It is characterized in that it comprises a position detector (36) for detecting the position fluctuation of the immersion (16). It is preferred that the image detector 34 is configured by installing a laser vision sensor, a CCD camera, and the like in combination. The position of the welding bead 42 is also detected at the same time as the improvement position is detected in front of the bogie 10. The angle detector 35 is configured by selecting from a tilt sensor, a gyro sensor, and GPS. As shown in FIG. 3, it is important for the bogie 10 to maintain an appropriate directional angle 46 because a slight slip of the traveling wheel 11 occurs while the bogie 10 is traveling along the welding line. The position detector 36 is installed on the transporters 24 and 26 to detect the fluctuating position of the torch 14 and the copper immersion 16.

In addition, according to the present invention, the controller 40 is configured to generate a set output corresponding to the signal input of the detection means. The controller 40 is composed of a microprocessor, memory, and a microcomputer circuit having an input/output interface. An image detector 34, an angle detector 35, and a position detector 36 of the detection means are connected to the input interface. The transporter 24, 26, the traveler 30, the magnetic force regulator 38, etc. are connected to the output interface. The traveling and welding algorithm of the bogie 10 is stored and executed in the form of programs and data in memory.

As an example of the operation, as shown in FIG. 2, the magnet 12 of the bogie 10 is attached to the outer wall of the hull, and the inclination angle of the bogie 10 is set based on the inclination angle of the previously detected welding line, and the guide roller Using (20), the operation is started in a state where the contact portion 44 is maintained for welding improvement, and the torch 14 and the copper alloy 16 are operated while the truck 10 is driven by the welding line. When the end of the welding line is reached, the guide roller 20 is raised and finish welding can be performed using the signal from the image detector 34. As shown in FIG. 5(a), 90% or more of the welding beads 42 are processed by automatic welding, and the non-welding section affected by the guide roller 20 forms a manual bead 48 as shown in FIG. 5(b). do.

In this way, horizontal butt joint welding is possible with a rail, and EGW as well as general GMAW (including FCAW) welding are implemented in the same way.

In addition, although the horizontal welding of the outer shell of the hull has been described, it is also possible to perform horizontal welding inside the hull such as Longi BHD.

It is obvious to those skilled in the art that the present invention is not limited to the described embodiments, and can be variously modified and modified without departing from the spirit and scope of the present invention. Therefore, such modifications or modifications will have to belong to the claims of the present invention.

10: bogie 11: driving wheel
12: magnet 14: torch
20: guide roller 22: support
24, 26: transport 30: travel
32: rotary machine 34: image detector
35: angle detector 36: position detector
38: magnetic regulator 40: controller
42: welding bead 44: contact
46: Directing angle 48: Passive bead

Claims (6)

Apparatus for performing horizontal butt electro-gas welding in a railless manner:
A traveling wheel 11, a magnet 12, a torch 14 mounted, a vehicle 10 that can be welded by traveling along the welding improvement;
A guide roller (20) installed on the front surface of the truck (10) to be capable of postural movement and improving welding and maintaining contact while driving;
Detection means mounted to detect the traveling and welding state of the bogie 10; And
Non-rail horizontal butt electro-gas welding apparatus comprising a; controller 40 for generating a set output corresponding to the signal input of the detection means. The method according to claim 1,
The bogie (10) and guide roller (20) are railless butt electrogas welding devices, which have an inclination angle of 1 to 10 degrees. The method according to claim 1,
The guide roller 20 is a railless butt electro-gas welding apparatus, characterized in that it is configured to be able to move up and down through a rotor 32 connected to an end of the support 22. The method according to claim 1,
The bogie (10) further comprises a magnetic force regulator (38) that changes magnetic force by an electrical signal. The method according to claim 1,
The bogie (10) is a railless butt electro-gas welding device further comprising a transporter (24) (26) that induces a positional change of the torch (14) and copper alloy (16), respectively. The method according to claim 1,
The detection means includes an image detector 34 for detecting driving and welding conditions, an angle detector 35 for detecting the angle of the bogie 10 corresponding to welding improvement, a position change of the torch 14 and the copper alloy 16 It characterized in that it comprises a position detector (36) for detecting a railless butt electro-gas welding apparatus.

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