KR101285462B1 - Pile automatic welding device and method for easy disassembling and assembling - Google Patents

Abstract

PURPOSE: A pile automatic welding apparatus capable of being easily assembled and disassembled, and a pile welding method using the same are provided to weld piles without dislocation and to level the apparatus, thereby preventing failures in welding. CONSTITUTION: A pile automatic welding apparatus (10) capable of being easily assembled and disassembled includes a rail unit (20), a revolving conveyor (30), a welding torch holder (40), and a centering band (50). The centering band simultaneously sets the leveling of the rail unit and centers the welding portions of an upper pile and a lower pile. The rail unit at the outer diameter of the pile guides the movement of the revolving conveyor into the revolution of the rotating conveyor. The rotating conveyor is detachably installed at the rail unit, and revolves along the circumference of the upper pile. The welding torch holder is detachably connected to the revolving conveyor, and supports a welding torch.

Description

Pile automatic welding device and method for easy disassembling and assembling}

The present invention relates to an automatic welding device for piles used for foundation work, in particular, the centering alignment work between the piles to be joined is possible to weld welding without deviation, disassembly and assembly is easy to transport and handle in the field is easy In addition, the present invention relates to a pile automatic welding device that is easy to divide and disassemble and assemble so that horizontal adjustment is possible to prevent a poor bonding, and a pile bonding method using the same.

In pile pile construction, the jointing of pile ends is required depending on the depth of pile penetration. At this time, an additional pile is welded into the head of the infiltrated pile by welding. In other words, when piles longer than the standard are required, the ends of the piles are welded together. In this case, welding may be performed by a worker by hand or through an automatic welding device. In the case of the automatic welding device, there is no need for a welding expert and there is an advantage of obtaining a uniform bonding quality.

As a background technology of the present invention, Korean Patent Registration No. 10-1160251 (Pile welding device for ground works) has been proposed. In the background art, a guide rail having an inner diameter that is larger than an outer diameter of the pile is coupled to penetrate the inner and outer surfaces of the guide rail, and an inner end thereof is caught by a protrusion or a concave groove formed on an outer circumferential surface of the pile. It is in close contact with the outer circumferential surface of the fixing bolt for fixing the guide rail to the outside of the file, and a torch for welding is provided on one side and is coupled to the guide rail and includes a torch driving unit rotated along the guide rail, the guide rail is mutual A pair of support members coupled to form a ring and having a proximal end hinged to be rotatable with each other, and a fixing mechanism provided at the distal end portion of the support member to fix the distal end portions of the support members in engagement with each other; On the upper surface of the support member is provided with a rack gear concentric with the support member, the upper surface of the support member The guide groove forming a concentric circle with the support member is formed to be concave downward, and the upper and lower guide protrusions having a ring shape concentric with the support member are protruded from the inner circumferential surface of the support member and the lower side of the support member, and the torch driving unit Is a housing slidably coupled to the support member in the circumferential direction of the support member, a rotating shaft rotatably coupled to the housing so as to extend in and outward of the support member, and coupled to the rotating shaft and engaged with the rack gear. And a pinion gear to be coupled to one side of the housing and connected to the rotary shaft to rotate the rotary shaft, wherein the welding torch is coupled to one side of the housing to be adjustable in direction and position, and the housing is vertically coupled. Vertical extension extending in the direction and the number extending upward of the support member A first guide roller coupled to the housing main body having an extension part and having a support shaft in an up-down direction in the middle of the lower side of the horizontal extension part, the circumferential surface of which is in close contact with the side of the guide groove, and the lower side of the inner end of the horizontal extension part; The second guide roller is coupled to have a support shaft in the vertical direction, the circumferential surface is in close contact with the inner circumferential surface of the upper guide protrusion, and is coupled to have a support shaft extending in the inner and outer direction of the support member on the inner surface of the vertical extension portion; It includes a third guide roller in close contact with the lower side of the guide projection, characterized in that the projections for supporting both sides of the upper and lower guide projections are formed at both ends of the second and third guide roller.

However, in the background art, misalignment welding can be performed because the centering alignment work performed before joining piles can be performed, and there is no means for leveling the torch driving unit, which can cause welding defects in which welding is performed outside a predetermined welding portion. have. In addition, the number of installation parts of the guide roller in rolling contact with the guide rail is increased, and the number of parts is added.

Korean Laid-Open Patent Publication No. 10-2006-0117575 (Automatic welding machine for file connection)

According to the present invention, the centering alignment between piles to be joined is possible, and thus welding welding without misalignment is possible, disassembly and assembly are easy to carry and handle in the field, and the horizontal adjustment is possible to prevent the joint failure. An object of the present invention is to provide an automatic pile welding device for easy disassembly and assembly and a pile joining method using the same.

According to a suitable embodiment of the automatic pile welding device of the present invention, which is easy to divide and disassemble and assemble,

In the device for welding the end between the upper and lower piles adjacent to one axis during the foundation construction,

A rail unit disposed at an outer diameter portion of the pile to guide the movement of the rotary feeder in a circular motion;

A rotary feeder that is detachably and supported by the rail unit and is circularly moved along the circumference of the upper pile; And

And a welding torch holder detachably connected to the rotary feeder and supporting the welding torch.

In addition, the centering band for setting the horizontal of the rail unit and at the same time centering the joint between the adjacent upper and lower piles is further included;

Centering band,

A pair of ring-shaped partition plates whose inner diameter is the same as a pile and is divided into two equal parts and opened and closed about a hinge connecting one of the divided ends;

A band locking bolt, one end of which is hinged to one ring-shaped partition plate and the other end of which is fixed and released to the other ring-shaped partition plate by a nut on which one end is hinged to the ring-shaped partition plate to open and close the other end of the pair of ring-shaped partition plates;

An annular stopper provided on an inner surface of a pair of ring-shaped partition plates and positioned in a joining groove of a neighboring upper and lower pile end joint;

A horizontal control plate installed on an outer circumferential surface of the pair of ring-shaped partition plates to horizontally support the rotary feeder;

Characterized in that the horizontal adjustment plate fixing bolt for fixing the height of the horizontal adjustment plate position.

In addition, the rail unit,

An upper rail divided into two circles;

A rack gear having teeth formed along the circumference of the upper rail;

A lower rail having a diameter equal to that of the upper rail and positioned at a lower side at regular intervals and divided into two parts;

An attachment pad mounted on an inner surface of the plurality of rail connecting plates connecting the upper rail and the lower rail;

One divided section of the upper rail and the lower rail is hinged, and the other divided section of the upper rail and the lower rail is locked and released by a clamp handle having a linkage and a latch connected to the linkage. It is done.

In addition, the rotary feeder,

A transfer frame;

A pair of upper rollers supported by the upper portion of the conveying frame and in rolling contact with the upper surface of the upper rail of the rail unit;

A lower roller locking shaft horizontally disposed below the transport frame and rotatably supported;

A pair of lower rollers installed at both ends of the lower roller locking shaft and rolling contact with the lower rail of the rail unit;

A locking handle rod positioned on the rear side of the conveying frame and hinged via an arm connected to the lower roller locking shaft;

The hinge handle is connected to the upper end of the lock handle rod and is connected to the feed frame through the link. A lower roller locking handle;

A welding torch holder transfer screw having a screw operation handle at an upper end thereof and rotatably supported at a rear side of the transfer frame;

A welding torch holder support screw which is screwed to the welding torch holder conveying screw and moves up and down along the rotational direction thereof;

It characterized in that it comprises a drive motor fixed to the transfer frame having a pinion gear meshed with the rack gear of the rail unit at the output end.

In addition, the welding torch holder,

And a pair of pivot axes on the same vertical line that is removably connected to the pivot hole of the welding torch holder support of the rotary feeder.

In addition, the lock handle rod is characterized in that it includes a handle adjustment shaft that can adjust the length.

Moreover, the pile joining method using the pile automatic welding apparatus which is easy to divide | disassemble and assemble | assemble of this invention,

Installing a centering band on top of the lower pile driven into the ground;

Lifting the upper pile and drawing its lower end into the centering band to perform a center alignment operation;

Wrapping the rail unit on the lower side of the upper pile and positioning the rail unit horizontally on the centering band;

Placing the upper roller on the upper surface of the upper rail and the lower roller on the lower surface of the lower rail and assembling the rotary feeder to the rail unit so as to engage the drive motor side pinion gear with the rack gear, and locking the locking handle with the locking handle;

After dismantling and removing the centering band, mounting the welding torch holder to the welding torch holder support of the rotary feeder and then manipulating the welding torch holder conveying screw to adjust the welding position of the welding torch;

And driving welding the circumference of the joint surface of the upper and lower piles by rotating the driving motor and a welding torch.

According to the present invention, the automatic automatic welding device for splitting and disassembling and assembling and the pile joining method using the same, the centering alignment between piles joined by the centering band is achieved, so that welding can be performed without misalignment. It is easy to dismantle and assemble between welding torch holders, so it is easy to transport and handle in the field.

In addition, the number of installation parts of the guide roller in rolling contact with the guide rail is reduced, so that the number of parts is reduced, and the power transmission structure is simple, thereby significantly reducing the production cost.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is an overall configuration of the automatic pile welding device according to an embodiment of the present invention.
Figure 2a is a perspective view of the rail unit of Figure 1;
Figure 2b is an open state diagram of the rail unit of Figure 2a.
Figure 3a is a perspective view showing a separation state between the rotary carrier and the welding land holder of Figure 1;
Figure 3b is a perspective view of the rotary carrier of Figure 3a from another angle.
Figure 4 is a side view showing the operation of the lower roller lock handle side of the rotary feeder of FIG.
Figure 5a is a perspective view of the centering band of Figure 1;
5B is a state in which the centering band of FIG. 5A is opened.
6A to 6D are construction state diagrams for each step of pile bonding using the automatic pile welding device according to the embodiment of the present invention.
7 is a view showing a welding state using the automatic pile welding device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Automatic pile welding device 10 according to an embodiment of the present invention is disposed in the outer diameter portion of the upper pile (P2) as shown in Figure 1 to 5b to guide the movement of the rotary feed table 30 in a circular motion Of the rail unit 20 and the rail unit 20 of the rotary feeder 30 and the rotary feeder 30 of FIGS. A welding torch holder 40 of FIG. 3A detachably connected and supporting a welding torch T. As shown in FIG.

Preferably, the centering band 50 of FIGS. 5A and 5B is further included to set the horizontal of the rail unit 20 and at the same time to center the junction between the adjacent upper and lower piles P2 and P1.

As shown in FIGS. 2A and 2B, the rail unit 20 includes upper rails 21 and 21 having a circular symmetry, and rack gears 22 having teeth formed along the upper rails 21 and 21. ), Lower rails 23 and 23 which have the same shape and diameter as the upper rails 21 and 21 and are symmetrically divided by being positioned at the lower side at regular intervals, and the upper rails 21 and 21 and the lower rails. The attachment pad 25 attached to the inner surface of the several rail connecting plate 24 which connects 23 and 23 is provided. The attachment pad 25 may be made of rubber as an example of elastic compression to exert an adhesive force by the repulsive force.

At this time, the upper and lower rails (21, 23) has a circular pipe cross section, the diameter thereof is formed at least larger than the outer diameter of the pile (P1, P2) to be constructed.

In addition, the rail unit 20 has one hinged end surface of the upper rails 21 and 21 and the lower rails 23 and 23 connected to each other by a hinge, and the upper rails 21 and 21 and the lower rails 23 and 23 The other divided cross section is made to be locked and released by the clamp handle 28 having the linkage 27 and the clasp 29 connected to the linkage 27.

Accordingly, the rail unit 20 has the other side of the upper and lower rails 21 and 23 divided and opened or closed at the same time around the hinge axis.

The connecting ring 27 is in the form of a square ring, one end of which is pivotally connected to a position away from the rotation axis of the clamp handle 28. The clasp 29 has a hook portion 291 capable of hooking the connecting ring 27 at one end thereof, and is formed with a screw shaft 292 through which the connecting plate 24 is inserted at the other end thereof, and the screw shaft 292 is screwed. It is fixed by the fastened nut 293. At this time, the tightening force of the clamp handle 28 is determined according to the fastening amount of the nut 293.

As shown in FIGS. 3A and 3B, the rotary feeder 30 is supported on the transfer frame 31 and the upper portion of the upper frame 21 and 21 of the rail unit 20 by being supported by the upper portion of the transfer frame 31. A pair of upper rollers 32 and 32, a lower roller locking shaft 33 horizontally disposed below the conveying frame 31 and rotatably supported, and provided at both ends of the lower roller locking shaft 33 A pair of lower rollers 34 and 34 in contact with the lower rails 23 and 23 of the unit 20 and an arm connected to the lower roller locking shaft 33 on the rear side of the transfer frame 31 ( The lock handle rod 36 hinged via 35 and hinged to the upper end of the lock handle rod 36 and connected to the transfer frame 31 through the link 374 at the same time, according to the operation direction. 36, a lower part which engages and releases between the rotary feeder 30 and the rail unit 20 by manipulating the rotational direction of the lower roller locking shaft 33 through the medium 36. A welding torch holder conveying screw 38, which has a roller locking handle 37, a screw operating handle 381 at its upper end, and is rotatably supported on the rear side of the conveying frame 31, and a welding torch holder conveying screw 38 The welding torch holder support 39 which is screwed to the shaft and moves up and down along the direction of rotation thereof, and the pinion gear G meshed with the rack gear 22 of the rail unit 20 at the output end. 31) and a drive motor (M) fixedly installed.

The transfer frame 31 is made of a square pipe having a hollow cross section in consideration of weight and rigidity. The transfer frame 31 is composed of horizontal frames 311 and 311 disposed at upper and lower portions, and vertical frames 312 and 312 connected to both ends of the horizontal frames 311 and 311, respectively. In this case, the horizontal frames 311 and 311 have a radius of curvature greater than the radius of curvature of the pile P1 or P2. Therefore, the transfer frame 31 is disposed spaced apart at regular intervals from the outer peripheral surface of the pile (P1 or P2).

The lower roller locking handle 37 has a first hinge pin 372 and a second hinge pin 373 on the opposite side of the handle 371, the first hinge pin 372 is on the top of the lock handle rod 36 It is hinged and the 2nd hinge pin 373 is hingedly connected to the back side of the conveyance frame 31 via the link 374. As shown in FIG. Accordingly, when the handle 371 of the lower roller locking handle 37 is lowered, the locking handle rod 36 descends to rotate the lower roller locking shaft 33 in one direction to raise the lower rollers 34 and 34 upward in the direction of the arrow U. On the contrary, when the handle 371 is lifted up, the lock handle rod 36 is raised and the lower roller lock shaft 33 is rotated in the other direction, and the lower rollers 34 and 34 are rotated downward in the D direction to return to their original positions. do.

At this time, the lock handle rod 36 may be configured to include a handle adjustment shaft 361 that can adjust the length. One end of the handle adjustment shaft 361 is pivotally connected to the lock handle rod 36 and the other end is screwed. At this time, the handle adjusting shaft 361 has a handle shaft operating lever 362 in order to facilitate the rotation operation of the handle adjusting shaft 361.

As shown in FIG. 3A, the welding torch holder 40 has a pair of pivot shafts on the same vertical line that is detachably connected to the pivot holes 39a and 39a of the welding torch holder support 39 of the rotary feeder 30. 41 and 41 and fixing unit 42 to which the welding torch T is fixed.

5A and 5B, the centering band 50 has a diameter equal to that of the pile P1 or P2, and is divided into two, and a pair of ring-shaped splits are opened and closed around a hinge connecting either split end. Nut hinged at one end to one ring-shaped partition plate 51a and screwed at the other end to open and close the plates 51a and 51b and the other divided end of the pair of ring-shaped partition plates 51a and 51b. Band locking bolts 53 fixed to and released from the other ring-shaped partition plate 51b by the 52, and inner side surfaces of the pair of ring-shaped partition plates 51a and 51b, and adjacent upper and lower pile end joints An annular stopper 54 positioned in the joining groove, a horizontal adjustment plate 55 installed on the outer circumferential surface of the pair of ring-shaped partition plates 51a and 51b so as to be movable up and down, and horizontally supporting the rotary feed tray 30; , The ring-shaped partition plate (51a, 51b) is assembled and then inserted into the long hole (55a) of the horizontal control plate 55 is the height of the horizontal control plate 55 The horizontal control panel fixing bolt 56 for fixing the position is included.

At this time, the cross section of the stopper 54 has a cross-sectional shape of the corner where the upper and lower pile ends meet.

In the present invention, the upper and lower rails 21 and 23 are not limited to the illustrated cross section. The upper and lower rails 21 and 23 may have a rectangular cross section or may have a different cross section. Therefore, the upper and lower rails 21 and 23 are not limited to the shape shown in the form of the upper and lower rollers 32 and 34 rolling.

The joining method between the upper and lower piles using the pile automatic welding device 10 configured as described above will be described.

The lower pile P1 is driven through the ground as shown in FIG. 6A (a), and the centering band 50 is installed at the upper end of the lower pile P1 as shown in (b). At this time, the pair of ring-shaped partition plates 51a and 51b are fixed to the upper end of the lower pile P1 by tightening the nut fastened to the band locking bolt 53.

Then, as shown in (c), the upper pile P2 is lifted and its lower end is led to the inner diameter of the centering band 50 to perform centering alignment. At this time, the outer peripheral surface of the lower end of the upper pile (P2) is introduced into the inner diameter portion of the ring-shaped partition plate (51a, 51b) is made of the centering alignment where the center of the upper and lower piles (P2, P2) are located in a straight line. At this time, the stopper 54 of the centering band 50 is located in the junction edge edge grooves of the upper and lower piles P2 and P2.

Then, the rail unit 20 is wrapped around and positioned on the lower side of the upper pile P2 as shown in FIG. 6B, and then the rail unit 20 is horizontally supported on the centering band 50. At this time, the lower rails (23, 23) is supported on the upper surface of the horizontal adjustment plate 55, and after adjusting the height of the horizontal adjustment plate 55, the horizontal adjustment plate 55 is fixed by fastening the horizontal adjustment plate fixing bolt 56 and the nut. . When the horizontal work of the rail unit 20 is completed, the clamp handle 28 of FIG. 2A is operated to connect the clasp 29 and the connecting ring 27 to pull the upper and lower rails 21 and 23 to each other. The dividing surface is bonded and at the same time the attachment pad 25 is in close contact with the outer circumferential surface of the upper pile P2. Therefore, the rail unit 20 is firmly installed on the upper pile P2 by the pulling force of the clamp handle 28 and the adhesion of the attachment pad 25.

Next, as shown in FIG. 6C, the upper roller 32 is positioned on the upper surface of the upper rails 21 and 21, and the lower roller 34 is positioned on the lower surface of the lower rails 23 and 23. After the pinion gear (G) is assembled to the rack gear (22), the rotary feeder (30) is assembled to the rail unit (20), and then locked with a lock handle (37).

This is because the lower roller lock handle 37 is pushed down and the lock handle rod 36 moves downward and the lower roller lock shaft 33 rotates so that the lower roller 34 is lifted upward to lower rails 23 and 23. By being in close contact with the rotary feeder 30 is assembled to the rail unit 20 to be transportable.

After the installation of the rotary feed table 30, the centering band 50 is dismantled and removed, and then welding is performed. The removed centering band 50 may be pre-installed at the portion to be welded of the pile to be constructed at the next position to shorten the welding time.

Next, as shown in FIG. 6D, the welding torch holder 40 is mounted on the welding torch holder support 39 of the rotary feeder 30, and then the welding torch holder feeding screw 38 is operated to adjust the welding position of the welding torch. The work of positioning on the side of the joint is made. At this time, the welding torch holder 40 is pivotably assembled with the pivot shafts 41 and 41 inserted from the upper part to the lower part in the pivot hole 39a of the welding torch holder support 39. Then, the other end of the tension spring, one end of which is connected to the rotary feeder 30, is connected to the welding torch holder 40 (see FIG. 3A).

Then, the corresponding switch of the control box (not shown) is operated to drive the drive motor M in rotation, and at the same time, the joints around the end portions of the piles P1 and P2 joined by gas welding of the welding torch T are connected. (See FIG. 7). At this time, a welding rod is supplied inside the welding torch T. By rotating the drive motor M, the rotary feeder 30 and the welding torch holder 40 are uniformly joined to the entire circumference of the joint while performing circular motions together.

After the welding operation is completed, the welding torch holder 40, the rotary feeder 30, the rail unit 20 is removed in the order of dismantling.

As described above, according to the present invention, the centering alignment operation between the piles is performed by the centering band 50 to allow welding without deviation, and the centering band 50 is horizontally aligned to prevent defects from leaving the welding line. Can be. In addition, the rail unit 20, the rotary feed table 30, the welding torch holder 40 is configured to be disassembled and assembled, so it is easy to transport and handle in the field.

In addition, the mounting and disassembly of the rotary feed table 30 can be simplified by only operating the lower roller locking handle 37.

In addition, the height of the welding torch can be easily adjusted by the handle 381 of the welding torch holder transfer screw 38 side.

In addition, the power transmission structure of the drive motor (M) is simple, the manufacturing cost is reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

20: rail unit
30: rotary feeder
40: welding torch holder
50: centering band

Claims (7)

In the device for welding the end between the upper and lower piles (P2, P1) adjacent to one axis during the foundation construction,
A rail unit 20 disposed at an outer diameter portion of the pile P2 to guide the movement of the rotary feeder 30 in a circular motion;
A rotary feeder 30 detachably installed on the rail unit 20 so as to be circularly moved along the circumference of the upper pile P2; And
A welding torch holder 40 detachably connected to the rotary carriage 30 and supporting the welding torch T;
Centering band 50 for setting the horizontal of the rail unit 20 and at the same time to center the junction between the adjacent upper and lower piles (P2, P1) is further included;
Centering band 50,
A pair of ring-shaped partition plates 51a and 51b whose inner diameter is the same as a pile and is divided into two equal parts and opened and closed about a hinge connecting one of the divided ends;
In order to open and close the other divided end of the pair of ring-shaped partition plates 51a and 51b, the other ring-shaped partition is connected by a nut 52 whose one end is hinged to the ring-shaped partition plate 51a and the other end is screwed. A band locking bolt 53 fixed to and released from the plate 51b;
An annular stopper 54 provided on the inner surfaces of the pair of ring-shaped partition plates 51a and 51b and positioned in the joining groove of the adjacent upper and lower pile end joining portions;
A horizontal control plate 55 installed on an outer circumferential surface of the pair of ring-shaped partition plates 51a and 51b to vertically support the rotary feed tray 30;
Automatic file automatic welding device for easy disassembly and assembly, characterized in that the horizontal adjustment plate fixing bolt 56 for fixing the height of the horizontal adjustment plate 55 is included. delete The method of claim 1,
Rail unit 20,
Upper rails 21 and 21 which are divided into two circles;
A rack gear 22 having teeth formed along the circumference of the upper rails 21 and 21;
Lower rails 23 and 23 having the same diameter as the upper rails 21 and 21 and being divided in two at lower intervals;
An attachment pad 25 mounted on an inner surface of the plurality of rail connecting plates 24 connecting the upper rails 21 and 21 and the lower rails 23 and 23;
One divided section of the upper rails 21 and 21 and the lower rails 23 and 23 is connected by a hinge, and the other divided sections of the upper rails 21 and 21 and the lower rails 23 and 23 are connected to each other. A file automatic welding device for easy disassembly and assembly, characterized in that locking and releasing are performed by a clamp handle (28) having a (27) and a latch (29) connected to the connecting ring (27). The method of claim 1,
The rotary feeder 30 is
A transfer frame 31;
A pair of upper rollers 32 and 32 supported by the upper portion of the conveying frame 31 and in rolling contact with upper surfaces of the upper rails 21 and 21 of the rail unit 20;
A lower roller locking shaft 33 horizontally disposed below the conveying frame 31 and rotatably supported;
A pair of lower rollers 34 and 34 installed at both ends of the lower roller locking shaft 33 and in rolling contact with the lower rails 23 and 23 of the rail unit 20;
A locking handle rod 36 positioned on the rear side of the conveying frame 31 and hinged via an arm 35 connected to the lower roller locking shaft 33;
It is hinged to the upper end of the lock handle rod 36 and at the same time connected to the transfer frame 31 through the link 374, the rotational direction of the lower roller lock shaft 33 via the lock handle rod 36 in accordance with the operation direction A lower roller lock handle 37 for engaging and releasing between the rotary feeder 30 and the rail unit 20 by manipulating the wheel;
A welding torch holder transfer screw 38 having a screw operation handle 381 at its upper end and rotatably supported at the rear side of the transfer frame 31;
A welding torch holder supporter 39 which is screwed to the welding torch holder conveying screw 38 and moves up and down in accordance with the rotational direction thereof;
A file for easy disassembly and assembly, characterized in that it comprises a drive motor (M) fixed to the transfer frame (31) having a pinion gear (G) engaged to the rack gear (22) of the rail unit (20) at its output end. Automatic welding device. The method of claim 1,
Welding torch holder 40,
Split, characterized in that it has a pair of pivot shafts 41 and 41 on the same vertical line detachably connected to pivot holes 39a and 39a of the welding torch holder support 39 of the rotary feed table 30. Pile automatic welding device for easy disassembly and assembly. 5. The method of claim 4,
The lock handle rod 36 is a pile automatic welding device for easy disassembly and assembly, characterized in that the handle adjustment shaft 361 that can adjust the length is included. Installing a centering band 50 on an upper end of the lower pile P1 driven into the ground;
Lifting the upper pile P2 and drawing its lower end into the centering band 50 to perform a center alignment operation;
Placing the rail unit 20 on the lower side of the upper pile P2 and positioning the rail unit 20 horizontally on the centering band 50;
The upper roller 32 is positioned on the upper surface of the upper rails 21 and 21, and the lower roller 34 is positioned on the lower surface of the lower rails 23 and 23, and at the same time, the pinion gear G on the driving motor M side is the rack gear. Assembling the rotary feeder 30 to the rail unit 20 so as to fit with the rail 22 and locking the lock with the lock handle 37;
After dismantling and removing the centering band 50, the welding torch holder 40 is mounted on the welding torch holder support 39 of the rotary feeder 30, and then the welding torch holder feeding screw 38 is operated to operate the welding torch ( Adjusting the welding position of T);
The automatic welding device for easy disassembly and assembly is characterized in that it comprises a step of rotationally driving the drive motor (M) and a welding torch around the joint surface of the upper and lower piles (P2, P1). Pile joining method for foundation work.

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