KR100808916B1 - Device for welding inside-jointing portion of large caliber steel pipes - Google Patents

Abstract

An equipment for welding inner surface weldments of large-diameter steel pipes is provided to simplify structure of the equipment and reduce cost accordingly by directly installing a guide rod, etc. on a support, improve performance of the equipment by omitting an intermediate moving part, increase utilization efficiency of the equipment by mounting varieties of devices required for welding on a car body part, and perform a welding operation more conveniently by performing a control operation at the outside. An equipment for welding inner surface weldments of large-diameter steel pipes comprises: a welder mounting part(200) on which an automatic welder(290) is mounted, and of which a position is adjustable; a close adhesion support(230) installed on the welder mounting part and expanded or contracted to support the equipment within steel pipes; an automatic operating unit for automatically operating the close adhesion support; a car body part(210) which is constructed to automatically travel the equipment within the steel pipes, on which a welding supporting unit and a control unit are mounted to operate the automatic welder and the welder mounting part, and which has a supporter vertically installed thereon to support the welder mounting part; a guide mechanism directly installed on the supporter of the car body part to move the welder mounting part vertically such that the close adhesion support is positioned at the center of the steel pipes when supporting the close adhesion support within the steel pipes; and a remote controller(320) connected to the control unit of the car body part to operate a welding system at the outside, wherein the car body part includes a frame(211) having the welding supporting unit and the control unit mounted thereon, an automatic traveling mechanism formed on the frame, and a support(213) installed vertically on a top part of the frame to support the welder mounting part.

Description

Device for welding inside-jointing portion of large caliber steel pipes}

1 is a perspective view of the front direction of the conventional welder welded to the inner surface of the steel pipe;

Figure 2 is a perspective view of the rear direction showing the welding device of the inner surface of the conventional steel pipe,

Figure 3 is a side view showing the inner joint welding device of a conventional steel pipe

Figure 4 is a side view of the inner surface connection welding device for large diameter steel pipe according to the present invention,

5 is a front view of the welding apparatus for joining the inner surface of the large diameter steel pipe according to the present invention,

6 is a view showing a remote control controller according to the present invention;

7 is a view showing a control box according to the present invention;

8 is a diagram illustrating a remote remote controller according to the present invention.

<Explanation of symbols for the main parts of the drawings>

200: welder mounting portion 210: body portion

211 frame 213 support

230: close support 240: guide mechanism

241: guide rod 243: guide block

250: rotary feed mechanism 251: rotary motor

255: rotary gear 260: vertical feed mechanism

270: horizontal feed mechanism 280: welding table

290: automatic welding machine 320: remote control controller

340: wire feeder 330: relay box

310: control box

The present invention relates to a welding device for welding the inner surface of a large steel pipe, and in particular, to simplify the overall configuration to be suitable for the inner surface welding of large diameter steel pipe, and to mount the necessary equipment for welding to efficiently manage and use the auxiliary equipment An apparatus for welding inner surface joints of a large diameter steel pipe of a welding device.

Generally, steel pipes are used for line pipes, oil pipes, water pipes, sewer pipes, and the like, and have a diameter of at least 600 mm.

These steel pipes are mainly constructed in a method of embedding in the ground, the present applicant has been patented by the patent registration No. 10-440555 to propose a "steel pipe construction method" in order to greatly improve the safety and workability in the construction of steel pipes.

In addition, the present applicant has developed a welding robot for the inner surface joint of the steel pipe that can be used in the construction method of such a steel pipe, and then applied for a patent and received a patent registration No. 10-490228.

 The inner joint welding robot of the present invention, in the continuous construction of the steel pipe, by welding the inner joint of the steel pipe in the welding step safely by automation to shorten the construction period and increase the work safety, and also to weld the inner joint In the case of different diameters of the steel pipes, it is possible to fix them according to their diameters, and to change the rotation radius of the welding means, thereby presenting an inner surface welding part robot of the steel pipes capable of actively welding the inner joints of the steel pipes having different diameters. It was.

Referring to Figures 1 to 3 briefly described with respect to the inner joint welding robot of the patent invention as follows. Reference drawings The accompanying drawings are attached as it is disclosed in the patent publication.

The inner joint welding robot of the patent invention is first provided with a rotation support means (20).

The rotation support means 20 is a support frame 22 is provided with a rotating shaft 24 on the outside thereof so as to be rotatable with respect to the base frame 12, the guide rods installed side by side inside the support frame 22 (28) While the upper and lower the slide is made, the gearbox 40 is installed in the middle, the manual handle 42 on one side of the gearbox 40, the rotary gear 64 is installed on the other side The upper and lower sides include a pressing support frame 30 provided with pressing pistons 32 which are pushed out or pushed inward according to the rotation of the manual handle 42.

A driving device 60 is installed in the pressing support frame 30 of the rotation supporting means 20, and a driving gear 62 connected to the driving device 60 is engaged with the rotary gear 64. .

The rotation support means 20 is provided with a welding means 70 for welding the inner surface joint of the steel pipe by rotating as well as lifting in the vertical direction and sliding in the horizontal direction.

The welding means 70 includes a vertical transfer device 72 installed on the rotary gear 64, a horizontal transfer device 90 installed vertically by the vertical transfer device 72, and the horizontal transfer device. It comprises a welding frame 110 installed horizontally transferable relative to the device 90, and a welding device 120 provided at one end of the welding frame (110).

The welding device 120 installed at one end of the welding frame 110 includes a sensor 130 for measuring the flatness and transmitting this signal to a control unit along the inner joint of the steel pipe to be welded, and the sensor ( 130 is installed in conjunction with the welding torch 132 to weld the inner joint of the steel pipe while the trailing along the sensor 130, and the welding torch 132 is made by flowing a certain angle from side to side to make the welding zigzag It is configured to include a flow device (136) to make.

The sensor 130 and the welding torch 132 are configured to be connected and interlocked by the arm 128 with respect to the hinge portion 124 fixed to one end of the welding frame 110, the flow device 136 ) Is configured to flow the welding torch 132 from side to side by flowing the hinge portion 124 from side to side.

In the welding device 120, a camera cradle 134 is further provided at a position close to the welding torch 132 in which a camera for photographing and transmitting a welding state to a monitor is installed.

Usually 600mm ~ 1000mm steel pipe can be classified into small diameter, 1000mm or more steel pipe, large diameter, the inner joint welding robot as described above is configured to be widely applied to welding steel pipe of 600mm or more.

However, the above-described patent invention has the advantage that automatic welding is possible even when the diameter of the steel pipe is different, but the overall structure is complicated, and there is a problem that the operation is difficult.

In particular, the rotary support means 20 is installed so that the welding means 70 is installed to rotate about the base frame 12 around the rotating shaft 24 for welding the small-diameter steel pipe and entering the steel pipe. Due to the complexity of the overall structure, high manufacturing costs, the operation of the equipment may be difficult, and there may be limitations to further improve the accuracy of welding.

In addition, the patented invention is not only easy to install and connect the auxiliary equipment because it is configured to support by connecting the auxiliary device required for welding by pipes and wires, etc. outside the steel pipe, the storage and use of the equipment is cumbersome, steel pipe construction work Problems can arise that can also clutter the environment.

The present invention has been made to solve the above problems, by eliminating the configuration to rotate the welder mounting portion when entering the steel pipe, and by installing a guide rod, etc. directly on the support structure of the device can be simplified to reduce costs In addition, it is an object of the present invention to provide a welding apparatus for the inner surface joint for large diameter steel pipe that can improve the performance of the device by increasing the accuracy of the welding operation by removing the intermediate flow.

In addition, the present invention is equipped with all the equipment necessary for welding to the body portion integrally configured to increase the efficiency of the use of equipment, the control operation by the external operation is possible to weld the inner surface joint for large diameter steel pipe can be made more convenient Another object is to provide a device.

According to the present invention for realizing the above problems, the apparatus for welding a large diameter steel pipe inner surface joint includes: a welding machine mounting portion configured to be equipped with an automatic welding machine and to adjust its position; A close support provided on the welder mounting part to expand or contract both sides of the welder to support the equipment in the steel pipe; Automatic operation means for automatically operating the close support; This equipment is configured to automatically run in the steel pipe, the welding support equipment and the control equipment is mounted to operate the automatic welding machine and welder mounting portion, the body portion with a support positioned in the vertical direction to support the welder mounting portion Wow; A guide mechanism installed directly on the support of the vehicle body to support the welding support in the steel pipe so that the welder mounting portion is moved up and down to be positioned at the center; It is characterized in that it comprises a remote control controller connected to the control equipment of the vehicle body is connected to operate the welding system from the outside.

Here, the welding machine mounting portion is preferably supported by the guide mechanism to be movable up and down is provided with a transfer mechanism for transporting the automatic welding machine in a rotational, vertical, horizontal direction.

In addition, the transfer mechanisms, the rotary transfer mechanism is supported on the guide mechanism to rotate the automatic welding machine along the inner surface of the steel pipe, and the vertical transfer mechanism is supported on the rotary transfer mechanism to move the automatic welding machine up and down And, it is preferably configured to include a horizontal transfer mechanism which is connected to the vertical transfer mechanism to move the automatic welding machine back and forth.

In addition, the body portion is positioned horizontally, the frame on which the welding support equipment and the control equipment is mounted to operate the automatic welding machine and welder mounting portion, the automatic traveling mechanism provided in the frame to enable automatic running, and perpendicular to the upper portion of the frame It is preferably configured to include a support positioned in the direction to support the welder mounting portion.

In addition, the upper portion of the frame may be configured to include a gas supply wire supply device, a control box for controlling the automatic tracking operation of the automatic welding machine, and a relay box for connecting the control box and the remote control controller.

The front of the support is preferably provided with a lighting device.

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

Figure 4 is a side view of the inner surface joint welding device for large diameter steel pipe according to the present invention, Figure 5 is a front view of the inner surface joint welding device for large diameter steel pipe according to the present invention.

Large-diameter steel pipe inner joint welding device according to the present invention, as shown in Figure 4 and 5 large welder mounting portion 200, the close support 230, the vehicle body 210, remote control controller 320, etc. It is composed.

The welder mounting unit 200 is equipped with an automatic welding machine 290 is made to be able to adjust its position.

The close support 230 is provided to the welder mounting portion 200 is configured to support the equipment in the steel pipe is expanded or contracted to the upper and lower sides and is configured to be automatically operated by the automatic operating means.

The body portion 210 is configured to automatically drive the equipment in the steel pipe, and also equipped with welding support equipment and control equipment to operate the automatic welding machine 290 and welding machine mounting unit 200, the welding machine mounting unit ( A support 213 positioned in the vertical direction to support 200 is provided.

In particular, when supporting the close support 230 in the steel pipe to the support 213 of the vehicle body 210, the welder mounting portion 200 is moved up and down so that the guide mechanism 240 directly installed on the support 213 to be located in the center Is prepared.

The remote operation controller 320 is connected to the control equipment of the vehicle body 210 is configured to operate the welding system from the outside.

Such major components of the present invention will be described in more detail with reference to the drawings.

First, the vehicle body 210 is horizontally positioned and provided with a frame 211 on which welding support equipment and control equipment are mounted so as to operate the automatic welding machine 290 and the welding machine mounting part 200, and the frame 211. It is composed of an automatic traveling mechanism for enabling automatic driving, and a support 213 positioned in the vertical direction on the upper portion of the frame 211 to support the welder mounting portion 200.

Here, the upper portion of the frame 211 to enable the automatic tracking operation of the gas supply wire supply device 340, a motor control device (not shown) for driving a motor for driving the transfer mechanisms, the automatic welding machine 290. The control box 310 for controlling, and the relay box 330 for connecting the control box and the remote operation controller 320 is mounted. In addition, it may be provided with a fume dust collector for absorbing and purifying the harmful gas generated during welding.

Such mounting equipment may be freely arranged on the upper portion of the frame 211 according to the implementation conditions, and in addition to the above-described mounting equipment, it is possible to additionally mount and configure the equipment according to the conditions. It is also possible to configure the device by deleting it.

The automatic driving mechanism includes driving wheels 221 and 222 provided at the front and rear of the frame 211, and a driving device provided at the frame 211 to drive the front driving wheel 221. .

The drive device includes a drive motor 225 for driving the front travel wheels 221 and a power transmission mechanism 226 such as a chain for transmitting a driving force to the travel wheels 221 from the drive motor.

In this case, the automatic driving mechanism may be configured to drive the rear driving wheel 222 instead of the front wheel 221.

The support 213 is vertically erected from the front of the frame 211, the guide mechanism 240, the close support 230, the welder mounting portion 200 is connected to the center portion as shown in FIG. Is done.

The support 213 is erected vertically on both sides, bar reinforcement 215 is connected to the horizontal direction at the top, the upper portion of each support 213 is provided with a ring portion 217 to be transferred through a crane or the like. do.

In particular, the front of the support 213 is provided with a lighting device 219 to easily grasp the internal welding space.

Next, the guide mechanism 240 is a guide rod 241 which is installed in the vertical direction in each of the two support 213, both ends are coupled to the guide rod 241 and the welder mounting portion 200 is installed Guide block 243.

The guide rod 241 is directly and fixed to the rod holder 242 is installed on the inner surface of the upper and lower end of the support 213, the guide block 243 is made of a conventional rectangular cylindrical structure.

This structure is made of a structure that is directly connected to, unlike the structure indirectly installed through the rotating shaft (24 in Figure 1), and the support frame 22 in the prior patent invention (10-490228).

Therefore, in the present invention, the guide rod 241 is directly installed on the support 213, thereby simplifying the structure and minimizing the flow element due to the rotational axis during the welding operation, thereby obtaining a more accurate welding operation.

Next, the close support 230 is installed to be supported through the guide block 243 of the guide mechanism 240, both support cylinders 232, 233 of the hollow structure is installed vertically long in the guide block 243 ), And support rods 234 and 235 which protrude upward and downward from both support cylinders 232 and 233, respectively, and are expanded and contracted by the automatic operation means, and are installed at ends of the support rods 234 and 235. It consists of support pads (236,237) in close contact with the inner surface of the.

In particular, the automatic operation means may be composed of an electric motor 231, according to the operation of the electric motor 231, a worm connected to the motor shaft, a worm wheel interlocked with the worm, a right-hand screw installed with respect to both centers of the worm wheel And the left hand screw, the support rods 234 and 235 engaged with the screws, and the like. Since this specific configuration is a known configuration specifically disclosed in the prior patent invention (10-490228), a detailed description thereof will be omitted.

Of course, the present invention is not limited to using the technology disclosed in the above-mentioned patent invention, and if the lengths of both support rods 234 and 235 can be changed according to the operation of the electric motor 231, it can be implemented by changing through various mechanical mechanisms. Of course it can. That is, the rack is connected to both sides of the pinion mounted on the shaft of the electric motor 231, and the rack is configured to be connected to a part of the support rods 234 and 235 or the support rods 234 and 235 so that the close support 230 is Automatic operation is enabled.

Next, the welder mounting part 200 is provided with a transfer mechanism which is supported by the guide mechanism 240 so as to be movable up and down so that the automatic welding machine 290 can be rotated in a vertical, horizontal direction.

These transfer mechanisms are supported by the guide mechanism 240, the rotary feed mechanism 250 to rotate the automatic welding machine 290 along the inner surface of the steel pipe, and the rotary feed mechanism 250 is supported by the It consists of a vertical transfer mechanism 260 configured to move the automatic welding machine 290 up and down, and a horizontal transfer mechanism 270 connected to the vertical transfer mechanism 260 to move the automatic welding machine 290 back and forth. do.

The rotary feed mechanism 250 includes a rotary motor 251, a drive gear 252, and a rotary gear 255 rotated by the drive gear. In the drawings, a reduction gear set serving as a reducer is provided between the driving gear 252 and the rotation gear 255.

The vertical transfer mechanism 260 is centered on a vertical support 263 fixed to the front surface of the rotary gear 255, a drive motor 261 provided on the vertical support 263, and the vertical support 263. It consists of a vertical moving plate 265 is moved up and down.

The horizontal conveying mechanism 270 has a horizontal support 273 fixed to the vertical moving plate 265, a drive motor 271 mounted to the horizontal support 273, and the horizontal support 273. The horizontal moving plate 275 is moved in the horizontal direction.

Here, although the specific drive structure of the horizontal and vertical transfer mechanisms 250 and 260 is not shown in the drawings, a structure including a worm and a worm wheel disclosed in FIGS. 5 and 6 of Patent No. 10-490228 is used, or Any one of the linear actuators which are commonly used can be selected and used.

Next, as shown in FIG. 4, the welding table 280 is connected to the horizontal moving plate 275 in a vertical direction and fixed, and the automatic welding machine 290 is installed at one end thereof.

The automatic welding machine 290 is preferably configured to enable contact automatic welding. The automatic welding machine 290 is composed of a torch rotary motor 293 for rotating the welding torch 291, and a welding angle control motor 295 for performing welding width, left and right stop function, weaving speed control, left and right center movement. do. In addition, as shown in FIG. 5, a contact sensor 296 is provided to enable automatic welding while tracking the welding line of the inner surface of the steel pipe, and sensor motors 297 and 298 are configured to transfer the sensor up, down, left, and right.

On the other hand, Figure 6 is a view showing a remote control controller 320 is connected to the control equipment of the frame 211 so as to operate the welding system from the outside, the operator from the outside to operate the equipment in a remote operation manner This is to allow welding to be performed.

The remote operation controller 320 may be configured to be connected to the relay box by a long wire, and may also be configured to transmit the operation signal wirelessly using an RF transceiver.

FIG. 7 is a view illustrating the external structure of the control box 310, and FIG. 8 is a view schematically showing a remote remote controller 325 capable of wirelessly operating an automatic traveling mechanism in the apparatus of the present invention.

As described above, the welding apparatus according to the present invention can operate or operate from the outside of the steel pipe by operating the remote remote controller 325 or the remote control controller 320, or the like, and can perform the inner surface welding of the steel pipe joint.

The inner surface joint welding device for large diameter steel pipe according to the present invention, which is constructed and operated as described above, is configured by directly installing a guide mechanism and a welding machine mounting portion on a support, thereby simplifying the overall structure of the equipment, and efficiently using a dedicated welding machine for large diameter steel pipe. There is an advantage to use.

In particular, unlike the prior patent invention, since the control unit is formed by deleting the center of the rotation axis in the middle to increase the accuracy of the welding operation as a whole, there is also an advantage that can improve the performance of the device.

In addition, the present invention is equipped with all the equipment necessary for welding to the vehicle body to be integrally configured to increase the efficiency of using the equipment, there is an advantage that the welding operation can be made more convenient because the control operation by the external operation is possible.

Claims (6)

A welder mounting portion configured to be equipped with an automatic welder and to adjust its position; A close support provided on the welder mounting part to expand or contract both sides of the welder to support the equipment in the steel pipe; Automatic operation means for automatically operating the close support; This equipment is configured to automatically run in the steel pipe, the welding support equipment and the control equipment is mounted to operate the automatic welding machine and welder mounting portion, the body portion with a support positioned in the vertical direction to support the welder mounting portion Wow; A guide mechanism installed directly on the support of the vehicle body to support the welding support in the steel pipe so that the welder mounting portion is moved up and down to be positioned at the center; A remote control controller connected to the control equipment of the vehicle body and connected to operate the welding system from the outside; The body portion is positioned horizontally, the frame mounted with welding support equipment and control equipment to operate the automatic welding machine and welder mounting portion, the automatic driving mechanism provided on the frame to enable automatic running, and the vertical direction on the upper portion of the frame Inner joint welding device for large diameter steel pipe, characterized in that it comprises a support positioned to support the welder mounting portion. The method according to claim 1, The welding machine mounting portion is supported by the guide mechanism to move up and down is provided with a transfer mechanism for transporting the automatic welding machine in a rotational, vertical, horizontal direction, characterized in that the welding apparatus for large diameter steel pipe inner surface. The method according to claim 2, The transfer mechanisms include a rotary transfer mechanism supported by the guide mechanism to rotate the automatic welding machine along the inner surface of the steel pipe, a vertical transfer mechanism supported by the rotary transfer mechanism to move the automatic welding machine up and down; And a horizontal conveying mechanism connected to the vertical conveying mechanism and configured to move the automatic welding machine back and forth. delete The method according to any one of claims 1 to 3, The upper part of the frame for a large diameter steel pipe comprising a gas supply wire supply device, a control box for controlling the automatic tracking operation of the automatic welding machine, and a relay box connecting the control box and the remote control controller. Inner joint welding device. The method according to any one of claims 1 to 3, An inner surface joint welding device for large diameter steel pipe, characterized in that the front of the support is provided with a lighting device.

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