KR100423205B1 - A welding system of a vertical rib for a bridge structure - Google Patents

Abstract

The present invention relates to a reinforcing rib welding device of a bridge structure, and in particular, the torch portion is changed to an appropriate posture corresponding to the shape of the reinforcing rib welded to the steel plate base material to maintain the optimum welding posture, Bridge structures that can significantly improve work efficiency and productivity while realizing optimum welding quality with more uniform fusion surface when welding ribs and reinforcement ribs of curved bridge structures. It relates to a reinforcing rib welding device.

The reinforcing rib welding apparatus of such a bridge structure includes a mounting frame for seating a steel plate base material on which a reinforcing rib is welded, a transport rail spaced apart in the width direction of the mounting frame, and driven by a driving source along the transport rail. A moving trolley, and variable welding means provided on one side in the width direction of the trolley to vary the welding posture appropriately, the variable welding means having an optimum welding posture according to the shape of the reinforcing rib welded to the base steel sheet. Keep it.

Description

Reinforcement rib welding device of bridge structure {A WELDING SYSTEM OF A VERTICAL RIB FOR A BRIDGE STRUCTURE}

The present invention relates to a reinforcing rib welding device of a bridge structure, and in particular, the torch portion is changed to an appropriate posture corresponding to the shape of the reinforcing rib welded to the steel plate base material to maintain the optimum welding posture, Bridge structures that can significantly improve work efficiency and productivity while realizing optimum welding quality with more uniform fusion surface when welding ribs and reinforcement ribs of curved bridge structures. It relates to a reinforcing rib welding device.

In general, the structure used in the bridge construction is manufactured in the form of a rectangular box by welding each of the plate-shaped steel plate base material, such a structure is divided into orthogonal (structure) bridge and gogok bridge structure according to its purpose.

In addition, since the structures require durability to withstand a considerable load after installation, welding the reinforcing ribs formed in a strip shape with a certain thickness on one side of the plate-shaped steel plate base material so that the structure can exert structural strength. The reinforcing ribs are also formed in a straight or curved shape so as to conform to the shape of the structure to be manufactured, that is, orthogonal or curved bridge structure.

In addition, the reinforcing ribs are primarily welded to the steel plate base material, and then, respectively, are bonded to each other through main welding to secure their own durability of an orthogonal or curved bridge structure.

Accordingly, a brief description of a conventional welding system structure for main welding the reinforcing rib welded as described above is as follows.

Such a welding system includes a conveying rail, a bogie moving in one direction by driving of a driving source along the conveying rail, and a torch portion provided on one side of the bogie and moving in one direction by the movement of the bogie to weld to the reinforcing rib. Include.

However, in the conventional welding system, since the torch portion is fixedly installed on one side of the trolley, the welding of the straight rib coupled to the orthogonal structure is possible, but the welding of the curved rib coupled to the curved bridge structure requires a predetermined time. After failing to adequately correspond to the curvature of the curved rib made of curvature, the worker repeatedly stops the bogie moving in the straight welding direction, and then separates the fastening member or the like to achieve a welding posture corresponding to the curvature of the curved rib. By performing welding discontinuously while adjusting the angle and position of the torch portion, there is a problem in that excessive working time and working personnel are required, thereby significantly reducing work efficiency and productivity.

In particular, by the discontinuous welding operation, the welded surface of the base steel plate and the reinforcing rib is irregularly formed after welding, thereby lowering the welding quality, thereby reducing the durability of the finished structure and shortening the life of the bridge. It is the cause of phosphorus defect construction.

Accordingly, the present invention has been made to solve the conventional problems as described above,

It is an object of the present invention to fabricate a bridge structure, in particular, the torch portion is changed to an appropriate posture corresponding to the shape of the reinforcing rib welded to the steel plate base material so that the welding is performed while maintaining the optimum welding posture, thereby forming Of course, to provide a reinforcing rib welding device of the bridge structure to realize the optimum welding quality having a more uniform fusion surface when welding the reinforcement ribs of the curved bridge structure and to significantly improve the work efficiency and productivity.

In order to realize the object of the present invention as described above,

Mounting frame for seating the steel plate base material welded reinforcement ribs, the conveying rail spaced apart in the width direction of the mounting frame, the bogie moving by the drive source along the conveying rail, the width direction of the bogie Variable welding means is provided on one side and the welding position is appropriately variable corresponding to the curvature of the reinforcing ribs, the variable welding means, the rail portion is provided on one side in the width direction of the trolley, the rail portion is movable A first transfer part installed to move horizontally and vertically at the same time, a second transfer part installed to be movable to the rail part adjacent to the first transfer part, and a first variable part installed to a vertical move slider of the first transfer part A reinforcement of the bridge structure including a second variable part formed in a structure symmetrical to the first variable part and installed in a vertical slider of the second transfer part. It provides a bracket welded unit.

1 is an overall perspective view of a steel bridge rib welding apparatus according to the present invention.

Figure 2 is a perspective view showing a variable welding means according to the present invention.

3 is a perspective view showing a drive unit according to the present invention.

4 is a side cross-sectional view of FIG.

Figure 5a is a partial cross-sectional view showing a first transfer portion and a first variable portion in accordance with the present invention.

5B is a right side view of FIG. 5A.

Figure 6a is a partial cross-sectional view showing a second transfer portion and a second variable portion in accordance with the present invention.

FIG. 6B is a left side view of FIG. 6A; FIG.

7 is a plan view of the variable welding means according to the invention.

8 is a plan view showing an operating state of the first variable portion according to the present invention.

Figure 9a is a partial cutaway perspective view showing a torch portion adjusting means of the first variable portion according to the present invention.

Figure 9b is a partial cutaway perspective view showing a torch portion adjusting means of the second variable portion according to the present invention.

10 is a perspective view of the adjustment slider of FIGS. 9a and 9b.

11 is an operating state diagram of the first variable portion and the second variable portion according to the present invention.

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

1 and 2, the reinforcing rib welding apparatus of the bridge structure according to the present invention, the reinforcing rib (R) is a mounting frame (2) for mounting the steel plate base material (P) is welded, and this mounting frame A conveying rail 4 spaced apart in the width direction of (2), a trolley 6 which is moved by driving of a driving source along the conveying rail 4, and provided on one side in the width direction of the trolley 6; And a variable welding means in which the welding posture is appropriately varied, and the variable welding means is movable on the rail portion 8 and the rail portion 8 provided on one side in the width direction of the trolley 6. A first transfer part 10a installed to move horizontally and vertically at the same time, a second transfer part 10b mounted to the rail part 8 adjacent to the first transfer part 10a, and The first variable part 14a installed in the vertical moving slider 56a of the first transfer part 10a and the first variable part 14a are symmetrical to the first variable part 14a. Sex and the second contains the variable portion (14b) provided in the vertical movement, the slider (56b) of the second conveying part (10b).

The mounting frame (2) serves as a kind of workbench for performing the main welding by seating the steel plate base material (P) on which the reinforcement ribs (R) of the welding is completed, the normal fluorescence (SHAPE STEEL) in the transverse direction and longitudinal It is preferably made in the form orthogonal to the direction, made of a size that can accommodate the steel plate base material (P) seated on the upper side.

The conveying rail 4 is installed on the bottom surface at a predetermined interval in the width direction of the mounting frame 2 so that the trolley 6 moves from one end of the reinforcing rib R to the other end of the reinforcing rib R. In order to guide the welding to be carried out, the trolley 6 which is guided and moves in one direction can be smoothly welded to the reinforcing ribs R of the steel plate base material P seated on the mounting frame 2. It is preferable to be formed to extend further from the longitudinal front end of the mounting frame (2).

The trolley 6 is guided to the conveying rail 4 to move in one direction and to weld through the variable welding means to the reinforcing rib (R) of the steel plate base material (P) seated on the mounting frame (2) Write,

A lower frame 16 positioned on the upper side of the conveying rail 4, a vertical frame 18 provided upward in a direction orthogonal to the lower frame 16, and an upper end portion of the vertical frame 18; It includes an upper plate 20 installed in.

One side of the lower frame 16 is provided with a driving unit to move the cart 6 along the transfer rail 2 by the driving of the driving unit.

Therefore, the preferred structure of the drive source according to the present invention will be described with reference to FIGS. 3 and 4 as follows.

Drive motor 22 is installed on one side of the lower frame 16 of the trolley 6, a reducer 24 for reducing the rotational speed of the drive motor 22, and transmits the power of the reducer 24 And a driving wheel 26 which is grounded to the conveying rail 4 and rotates.

The main timing gear S1 is installed on the drive shaft 28 of the drive motor 22, and the auxiliary timing gear S2 is installed on the reduction shaft 30 of the reducer 24, and the main timing gear S1. ) And the auxiliary timing gear S2 are connected by the timing belt C so that the driving force of the driving motor 22 is transmitted to the driving wheel 26 through the reduction gear 24.

In addition, the driving source is installed on the lower frame 16 on both sides of the trolley 6, and a cover 12 is installed on the power transmission unit to which the timing gear and the belt are coupled to prevent a human body or a foreign substance from contacting. It is desirable to be.

In the above, the main timing gear (S1) and the auxiliary timing gear (S2) are installed on the drive shaft (28) of the drive motor (22) and the reduction shaft (30) of the reduction gear (24). It is described that the power is transmitted by connecting the timing belt C to S2), but is not limited thereto.

For example, power may be transmitted by a direct gear meshing, and in addition, a power transmission element that satisfies the object of the present invention may be implemented in various applications.

The upper plate 20 has a welder W connected to the torch portions T coupled to the first variable portion 14a and the second variable portion 14b, and simultaneously with the operation of the welder W. Welding rod storage packs W1 for storing the welding rods supplied to the torch unit T are respectively installed.

In addition, a guard (G) is installed on the edge of the upper plate 20 to prevent a safety accident caused by the fall of the operator during maintenance, that is, the width direction of the upper plate 20, that is, the first transfer portion and The upper one side of the second transfer unit is connected to the welding rod storage pack (W1) is provided with a welding rod feeder (F) for supplying the welding rod to the torch (T), respectively.

The welding rod feeder F is installed to be movable by the guide pipe 21 at one side in the width direction of the upper frame 20, which is widely used for the purpose of supplying the welding rod in a normal welding operation, Description is omitted.

2, 5B, and 6B, the rail unit 8 may include fixed blocks 32 installed on one side of the vertical frame 18 of the trolley 6 and the fixed blocks 32. A guide rail 34 coupled by welding or a bolt member or the like, a first guide plate 36 coupled to one side of the guide rail 34, and spaced apart from the first guide plate 36 at a predetermined interval. And a first roller 40, a second roller 42, and a third roller 44 which are guided and rotated by the first and second guide plates 36 and 38, respectively. And a second transport plate 46a having the same structure as that of the first transport plate 46a and the second transport plate 10b to which the first transport plate 10a is coupled. Contains 46b

The rail portion 8 is installed on one side of the trolley 6 in a width direction so that the first transfer portion 10a and the second transfer portion 10b can be smoothly transferred. The first guide plate 36 ) And the second guide plate 38 may be coupled to one side of the guide rail 34 by a coupling method such as a fastening member or welding, and the first, second, and third rollers 40, 42, 44. ), It is preferable that the first, second, and third rollers 40, 42, 44 are trimmed or surface treated so as to smoothly rotate the grounded part.

Therefore, the first roller 40 is grounded at the upper and lower ground portions of the first guide plate 36, the second roller 42 is grounded at the side ground portion, and the second guide plate ( 38, the first roller 10a and the second conveyor 10b coupled to the first conveying plate 46a and the second conveying plate 46b are grounded at the third roller 44. It is stably supported and can move smoothly.

5A and 5B, the first transfer part 10a is a vertical plate 50a coupled by a connecting bracket 48a at one side of the second transfer plate 46a, and the vertical plate 50a. A vertical transfer cylinder 52a coupled to an upper side of the vertical transfer slider 52a, and a vertical transfer slider 56a coupled to the piston rod 54a of the vertical transfer cylinder 52a to move in the vertical direction from the inside of the vertical plate 50a. It includes.

The connecting bracket 48a is coupled by a fastening member to one side of the first transfer plate 46a and the vertical plate 50a, or by welding or a similar coupling method.

The vertical plate 50a has a space portion for moving the vertical slider 56a up and down in the inside thereof, and the vertical slider 56a is installed in the space portion of the vertical plate cylinder 52a. The piston rod 54a moves upward and downward.

In addition, a guide rod 58a is installed inside the vertical plate 50a to guide the vertical slider 56a that is slid by the vertical transfer cylinder 52a to smoothly move the vertical slider 56a. Can be slide.

The vertical transfer cylinder 52a installed on the upper side of the vertical plate 50a may be a hydraulic or pneumatic cylinder. In addition, any of the vertical transfer cylinders 52a may be applied to satisfy the object of the present invention.

On the other hand, the second transfer portion 10b which is installed to be transported to the guide rail 34 adjacent to the first transfer portion 10a has the same structure as the first transfer portion 10a.

6A and 6B, the second transfer part 10b includes a vertical plate 50b coupled by a connecting bracket 48b on one side of the second transfer plate 46b, and the vertical plate 50b. And a vertical transfer slider (52b) coupled to the upper side, and a vertical transfer slider (56b) coupled to the distal end of the piston rod (54b) of the vertical transfer cylinder (52b) to move in the vertical direction. 56b) can be slid more smoothly by the guide rod 58b installed inside the vertical plate 50b, and the above-described structure is the same as or similar to that of the first transfer part 10a.

The first conveying part 10a and the first conveying part 10a and the first conveying part installed on the guide rails 34 of the rail part 8 are disposed at one side of the rear surface of the vertical plates 50a and 50b of the first conveying part 10a and the second conveying part 10b. 2 The interval adjusting cylinder 60 for adjusting and maintaining the interval of the transfer unit (10b) is installed.

Referring to FIG. 7, the gap adjustment cylinder 60 is installed at one side of the rear surface of the vertical plate 50b of the second transfer unit 10b, and the piston rod 62 of the gap adjustment cylinder 60 is formed on the first side. The first conveying part 10a and the second conveying part 10b are guided by one side of the fixing plate 64 coupled to the rear side of the vertical plate 50a of the conveying part 10a by the operation of the gap adjusting cylinder 60. Guided to the rail 34 is spaced at predetermined intervals, or adjacent.

One side of the vertical transfer slider (56a) of the first transfer portion (10a) at the edge of one side of the reinforcing rib (R) welded to the steel plate base material (P) appropriately variable welding position to perform welding in the optimum welding position The first variable part 14a is provided. The structure of the first variable part 14a will be described with reference to FIGS. 5A, 5B, 7 and 8 as follows.

An extension portion 68a coupled to one side of the vertical moving slider 56a of the first transfer portion 10a, an arm 70a rotatably installed with the extension portion 68a, and the arm 70a; A ground roller 72a rotatably installed at both front end portions of the reinforcing rib R having a predetermined curvature and grounded to one side of the reinforcing rib R, and a position of the torch portion T provided at one side of the arm 70a. It includes a control means for setting more precisely.

The extension portion 68a may be a conventional square or circular pipe member, and a rolling pin 77a protrudes to a predetermined length and is fixed to the lower side of the extension portion 68a.

The arm 70a forms a predetermined groove portion on one side of the horizontal portion corresponding to the rolling pin 77a of the extension portion 68a so that the outer ring of the bearing B is joined by an interference fit or a similar method. The rolling pin 77a of the extension 68a is coupled to the inner ring of the bearing B by an interference fit or a similar method.

The ground roller 72a is grounded on one side of the reinforcing rib R during welding, and rotates the arm 70a in a corresponding direction according to the shape of the reinforcing rib R so that the torch part T is formed. In order to perform welding while maintaining an optimum welding posture, it is preferable to be made of copper (Cu) material which is grounded to the reinforcing rib R to suppress noise and friction, and the arm 70a It is coupled to maintain a predetermined angle of inclination at the tip of the.

One side of the arm (70a) is provided with a control means for supporting the torch portion (T) and setting at the optimal welding position, the structure thereof will be described with reference to Figures 7 and 9a.

The adjusting means is arranged in a direction substantially orthogonal to the horizontal adjusting portion 74a coupled to one side of the arm 70a and moved in the longitudinal direction of the horizontal adjusting portion 74a. And a longitudinal adjustment portion 76a, wherein the horizontal adjustment portion 74a is provided with a case 78a coupled to one side of the arm 70a, and is installed in the longitudinal direction of the case 78a, and one end portion is adjusted. The adjustment screw 82a, to which the lever 80a is coupled, and a guide rod 66a installed at the case 78a at a predetermined interval with the adjustment screw 82a interposed therebetween. 76a has the same structure as that of the lateral adjustment unit 74a, that is, the case 84a, the adjustment screw 88a installed in the longitudinal direction of the case 84a, and the adjustment lever 86a coupled to one end thereof; And a guide rod 89a installed at the case 84a at a predetermined interval with the adjustment screw 88a therebetween. All.

The longitudinal control unit (76a) is to move while maintaining a constant posture in the lateral control unit (74a) by the adjustment slider (90a), the adjustment slider (90a) is the horizontal control unit (74a) and the longitudinal control unit ( A predetermined female screw and a through hole corresponding to the adjustment screws 82a and 88a of the 76a and the guide rods 66a and 89a are provided, and the cases 78a and 84a of the lateral adjustment portion 74a and the longitudinal adjustment portion 76a. Inside) (see Fig. 10).

The torch portion T is coupled to the support case 92a by a fastening bolt or a similar coupling method on the rear portion of the case 84a of the longitudinal adjustment portion 76a, and the tip portion of the torch portion T is approximately. The 45 ° inclination angle is maintained, which maintains approximately 45 ° at the bottom of the welding posture, that is, at the edge of the joint between the steel plate base material P and the reinforcing rib R, so that the optimum welding quality can be realized. (See Fig. 9a).

Therefore, when the control lever 80a of the horizontal control unit 74a is rotated, the adjustment screw 82a coupled with the control lever 80a rotates to adjust the slider 90a coupled with the adjustment screw 82a. Is moved in one direction from the inside of the case 78a of the transverse control portion (74a), the adjustment screw (88a) of the longitudinal adjustment unit (76a) coupled with the control slider (90a) is moved at the same time to adjust the longitudinal The portion 76a is moved in the horizontal direction.

Then, when the adjustment lever 86a of the longitudinal adjustment unit 76a is rotated in one direction, the adjustment screw 88a coupled to the adjustment lever 86a moves in the vertical direction along the female screw of the adjustment slider 90a. By the above operation, the torch portion T coupled to the rear portion of the case 84a of the longitudinal adjustment portion 76a can be more precisely adjusted in the horizontal and vertical directions.

On the other hand, the second variable portion 14b is coupled to the vertical moving slider 56b of the second transfer portion 10b in the same structure as the first variable portion 14a, the structure of which is shown in Figures 6a and 6b, 7 and 8, the following description is the same or similar to the first variable portion 14a.

The second variable portion 14b includes an extension portion 68b coupled to one side of the vertical moving slider 56b of the second transfer portion 10b, and an arm rotatably installed with the extension portion 68b. 70b, a ground roller 72b rotatably installed at both front ends of the arm 70b and grounded to one side of the reinforcing rib R, and a torch portion provided at one side of the arm 70b. And adjusting means for more precisely setting the position of (T).

In addition, the extension part 68b and the arm 70b are rotated by the rolling pin 77b and the bearing B in the same manner as the first variable part 14a.

Referring to FIGS. 7 and 9B, the adjusting means has a structure symmetrical with the adjusting means of the first variable part 14a, that is, the horizontal adjusting part 74b coupled to one side of the arm 70b, and And a longitudinal adjustment portion 76b disposed in a direction orthogonal to the horizontal adjustment portion 74b and moving in the longitudinal direction of the horizontal adjustment portion 74b, wherein the horizontal adjustment portion 74b is the arm 70b. A case 78b is coupled to one side of the case, and is installed in the longitudinal direction of the case 78b, and one end thereof has an adjustment screw 82b coupled with an adjustment lever 80b and the adjustment screw 82b therebetween. A guide rod 66b spaced at a predetermined interval and installed in the case 78b, wherein the longitudinal adjustment unit 76b has the same structure as that of the lateral adjustment unit 74b, that is, the case 84b and the case. An adjustment screw 88b installed in the longitudinal direction of the 84b and having an adjustment lever 86b coupled to one end thereof, and the adjustment screw 88b interposed therebetween. The interval spacing and a guide rod (89a) which are mounted to the casing (84b).

Then, the torch portion (T) is coupled to the support case (92b) by a fastening bolt or a similar coupling method on the rear portion of the case (84b) of the longitudinal adjusting portion (76b), and the longitudinal adjusting portion (76b) is an adjusting slider. By 90b, the horizontal adjustment part 74b is installed to be movable while maintaining a constant posture (see FIG. 10).

Accordingly, the first and second transfer parts 10a and 10b and the first and second variable parts 14a and 14b are formed at both side edge portions of the reinforcing ribs R welded to the steel plate base material P. According to the shape of (R), the welding position is appropriately changed to perform welding while maintaining the optimum welding position.

The first and second transfer parts 10a and 10b and the first and second variable parts 14a simultaneously weld to both side surfaces of the reinforcing rib R welded to the steel plate base material P on the guide rail 34. 14b) is further spaced apart at regular intervals to further install one or more variable welding means having the same structure as the transfer part and the variable part to simultaneously weld one or more reinforcing ribs (R) by one pass to further shorten the working time. Can be.

In addition, the driving motor and the cylinder, the welding machine, the welding rod feeder and the like is preferably controlled by electrically connecting to a separate control unit, which can be easily performed by those skilled in the art and understanding the object of the present invention. Detailed description thereof will be omitted.

Accordingly, a preferred welding embodiment of the reinforcing rib welding apparatus of the bridge structure according to the present invention will be described with reference to FIGS. 1, 2, and 7, and in this embodiment, curved ribs, that is, formed with a predetermined curvature on the steel plate base material, are described. The reinforcing rib is welded as an example.

First, the steel sheet base material P of the structure in which one or more reinforcing ribs R is disposed at a predetermined position by tack welding is seated on an upper side of the mounting frame 2 by using a separate crane (not shown).

Then, the setting work is performed so that the torch part T is positioned at one end of the reinforcing rib R. First, a separate control unit (not shown) is operated to be waiting at the front end of the transfer rail 4. The drive motor 22 of the trolley | bogie 6 is driven.

Then, when the trolley 6 moves in one direction along the transfer rail 4 by the driving of the driving motor 22 and the torch part T is located at one end of the reinforcing rib R, the driving motor The driving of 22 is stopped to allow the trolley 6 to stop.

When the torch part T is positioned above the distal end of the reinforcing rib R by the above process, the first and second transfer parts installed on the guide rail 34 at one side in the width direction of the trolley 6 Activate the vertical transfer cylinders 52a and 52b of 10a and 10b.

Then, the vertical sliders 56a and 56b coupled to the piston rods 54a and 54b of the vertical transfer cylinders 52a and 52b are lowered downward and coupled to one side of the vertical sliders 56a and 56b. The first variable portion 14a and the second variable portion 14b are simultaneously lowered to move the torch portion T downward.

When the lowering operation is completed, the torch portion (T) of the first transfer portion (10a) and the second transfer portion (10b) of the second transfer portion (10b) so as to be adjacent to each other at a predetermined interval on both sides of the reinforcing rib (R) for welding. Operate the gap adjustment cylinder 60 installed on the rear surface of the vertical plates 50a and 50b.

At this time, the first variable portion 14a coupled to the first conveying portion 10a and the second conveying portion 10b in the above operation are coupled to both ends of the arms 70a and 70b of the second variable portion 14b. The ground rollers 72a and 72b are preferably grounded on both sides of the reinforcing rib R or spaced at predetermined intervals (see FIG. 7).

When the above operation is completed, the adjusting means of the first and second variable parts 14a and 14b coupled to the vertical slide sliders 56a and 56b of the first transfer unit 10a and the second transfer unit 10b. By manipulating the lateral adjusting parts 74a and 74b and the longitudinal adjusting parts 76a and 76b, the torch part T can be moved in the horizontal and vertical directions to maintain a more optimal welding posture.

When the above setting is completed, the driving motor 22, the welding machine W, and the welding rod feeder F are operated by operating a control unit (not shown), wherein the rotational force of the driving motor 22 is the bogie 6. Since it is proportional to the feed rate of, it is preferable to set so that the best welding speed can be provided through the reducer 24 or the like.

Thus, when driving the drive motor 22 in accordance with the operation, the rotational force of the drive motor 22 is transmitted to the drive wheel 26 through the reducer 24 so that the cart 6 is transferred to the transfer rail ( 4 is moved in one direction, and at the same time as the trolley 6 moves, the trolley 6 is moved by the first and second transfer parts 10a and 10b and the first and second variable parts 14a and 14b. ) And the torch unit (T) coupled to the same as the trolley (6) in the state of maintaining the optimum welding position at both edges of the reinforcing rib (R) of the steel plate base material (P) seated on the mounting frame (2) It will move in the direction to perform welding.

At this time, the ground rollers 72a and 72b of the first variable portion 14a and the second variable portion 14b are moved in one direction by the bogie 6 while being grounded on both side surfaces of the reinforcing rib R. While the posture of the reinforcing rib (R) formed with a predetermined curvature is changed in a direction corresponding thereto.

Accordingly, the arms 70a and 70b coupled to the ground rollers 72a and 72b are rotated by the bearing B about the rolling pins 77a and 77b of the extension parts 68a and 68b. By the rotation of the arms (70a, 70b) the torch portion (T) is rotated at a predetermined angle (E) to achieve an optimum welding posture corresponding to the curvature of the reinforcing rib (R). .

The arms 70a and 70b are provided with a length D in the width direction for accommodating the curvature of the reinforcing rib R by the first conveying part 10a and the second conveying part 10b simultaneously with the rotation operation. A part 8 is moved to one side.

Thus, the torch part T moves in the welding direction by the trolley 6 and is reinforced by the first and second transfer parts 10a and 10b and the first and second variable parts 14a and 14b. According to the curvature of the rib (R), the posture and position are appropriately changed to maintain the optimum welding posture to perform welding.

As described above, according to the present invention, the posture of the torch is appropriately changed according to the shape of the reinforcing rib welded to the steel plate base material, so that welding is always performed while maintaining an optimal welding posture, thereby greatly improving work efficiency and productivity. In addition, it is possible to realize more improved welding quality, and in particular, to double the effect of the curved rib welding of the curved bridge structure.

Claims (9)

Mounting frame for seating the steel plate base material welded reinforcement ribs, the conveying rail spaced apart in the width direction of the mounting frame, the bogie moving by the drive source along the conveying rail, the width direction of the bogie It is installed on one side and includes a variable welding means that the welding position is appropriately variable according to the shape of the reinforcing rib, The variable welding means may include a rail unit provided at one side of the trolley in a width direction, a first conveying unit installed to be movable in the rail unit to move horizontally and vertically at the same time, and adjacent to the first conveying unit. A second conveying part movably installed in a portion, a first variable part installed in the vertical moving slider of the first conveying part, and a structure symmetrical to the first variable part and formed in the vertical moving slider of the second conveying part It includes a second variable portion is installed, The first variable portion and the second variable portion, an extension portion coupled to one side of the vertical movement slider of the first transfer portion and the second transfer portion, an arm rotatably provided with the extension portion, and both end portions of the arm. A reinforcing rib welding device of a bridge structure including a grounding roller rotatably installed at a side of the reinforcing rib and grounded to one side of the reinforcing rib, and an adjusting unit installed at one side of the arm to more precisely set the welding position of the torch. The method of claim 1, wherein the rail unit, the fixed block is provided on each side of the vertical frame of the trolley, a guide rail coupled to the fixed block, a first guide plate coupled to one side of the guide rail, and the first A second guide plate spaced apart from the guide plate at a predetermined interval, the first and second rollers and a third roller rotated by being guided to the first and second guide plates, and the first conveying part is coupled Reinforcing rib welding device for a bridge structure comprising a first conveying plate for, and a second conveying plate made of the same structure as the first conveying plate and the second conveying portion is coupled. The method of claim 1, wherein the first transfer unit, the vertical plate coupled to the coupling plate on one side of the first transfer plate of the rail portion, the vertical transfer cylinder coupled to the upper side of the vertical plate, and the vertical transfer cylinder Reinforcing rib welding device of the bridge structure including a vertical movement slider coupled to the front end of the piston rod for moving up and down inside the vertical plate. The method of claim 1, wherein the second transfer portion is a structure symmetrical with the first transfer portion is installed to be movable in the rail portion and the state adjacent to or spaced apart from the first transfer portion at a predetermined interval by the drive of the interval adjustment cylinder. Reinforcing rib welding device for a bridge structure, characterized in that the holding. delete The adjusting means of claim 1, wherein the adjusting means of the first variable portion and the second variable portion includes a horizontal adjusting portion coupled to one side of the arm, and disposed in a direction orthogonal to the horizontal adjusting portion in a longitudinal direction of the horizontal adjusting portion. Reinforcing rib welding device of the bridge structure, characterized in that it comprises a longitudinal control portion, wherein the horizontal control portion and the longitudinal control portion is coupled by the control slider to maintain a constant posture to move the torch in the horizontal and vertical direction. The ground rollers of claim 1, wherein the ground rollers of the first variable portion and the second variable portion are grounded to opposite sides of the reinforcing ribs in a facing position, and roll the torch portion according to the shape of the reinforcing ribs, or move to one side along the rail portion. Reinforcement rib welding device for a bridge structure, characterized in that to maintain the optimum welding position. The reinforcing rib welding apparatus according to claim 1, wherein the variable welding means is installed at least one rail portion. The reinforcing rib welding apparatus of claim 1, wherein the distal end portion of the torch portion provided in the first variable portion and the second variable portion maintains an inclination angle in the range of 45 ° at the edge of the joint portion of the steel plate base material and the reinforcing rib. .