JP2017144456A - Vertical stiffener welder for bridge girder and welding method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical stiffener welder with the intake of automatic travel used for welding a web material with a vertical stiffener used to reinforce a bridge plate girder consisting of the web material and a flange material, and a welding method using the same.SOLUTION: A vertical stiffener welder for a bridge plate girder 10, which is an apparatus for the horizontal fillet weld of a web material 101 with a vertical stiffener 104 provided for reinforcement in a bridge plate girder 100 having the web material 101, a first flange material 102, and a second flange material 103, has a main frame 20 capable of moving over the end face of the first flange material 102, an auxiliary frame 30 capable of moving over the end face of the second flange material 103, a travel frame 40 horizontally suspended by the first flange material 102 and the second flange material 103, and a weld head 50 provided with a pair of weld torches 51 at a lower end suspended from the travel rail 40 to be capable of automatically traveling in the longitudinal direction of the travel rail 40 and vertically moving.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for welding a vertical stiffener used for reinforcing a bridge plate girder made of a web material and a flange material to the web material, and a welding method thereof.

  Conventionally, in welding work of bridge plate girders made of web material and flange material and vertical stiffeners used for reinforcement, it is possible to perform main welding by a self-propelled semi-automatic welding device after temporary welding of members by an operator. There were many.

  A self-propelled semi-automatic welding apparatus is provided with a welding torch, a guide member, and a distance sensor on a traveling carriage having wheels, as in Patent Document 1 and Patent Document 2, and a welding torch and a welding line using the guide member and the distance sensor. An apparatus has been invented for performing welding while maintaining a constant value. As a result, it is possible to configure the apparatus with a small number of sensors, and many apparatuses specialized for horizontal fillet welding that do not require a complicated and large-sized control apparatus are commercially available.

  In addition, as in Patent Document 2, there is an apparatus that overcomes the problem that the vehicle body width portion in the traveling direction of the traveling carriage becomes unwelded in the conventional self-propelled semi-automatic welding apparatus.

  Conversely, as disclosed in Patent Document 3, the apparatus has a portal carriage and an articulated welding torch, and the apparatus controls the XYZ axis traveling and the welding torch by various sensors, and various welding methods and complicated welding lines are used. There are also automatic welding devices that allow for shape welding.

Japanese Patent No. 2540259 Japanese Patent No. 5191778 JP-A-5-285647

  In Patent Document 1 and Patent Document 2, since the traveling carriage travels on the web material, it cannot be used if a vertical stiffener or the like is provided with a wide traveling width and a width less than the traveling width. May be greatly limited.

  Moreover, in patent document 3, since it controls by an articulated welding torch and various sensors, an apparatus becomes large, Therefore The problem of ensuring manufacturing cost, running cost, and installation space arises.

  The object of the present invention is to improve welding quality, improve the weld bead aesthetics, and shorten the work time including setup when welding a vertical stiffener used to reinforce a bridge plate girder consisting of a web material and a flange material to the web material. , Providing a vertical stiffener welding device for bridge plate girders that incorporates automatic traveling that can reduce the burden on workers, enable non-skilled workers to easily perform welding work, and reduce overall costs, and a welding method using the same There is to do.

  The present invention has been made to solve the above-described problems, and a vertical stiffener welding device for a bridge plate girder according to claim 1 includes a first flange member and a flange member on each side surface of a web member facing each other. An apparatus for simultaneously horizontal fillet welding both edges of a vertical stiffener for reinforcement provided on the web material of a bridge plate girder to which a second flange material is attached, wherein the web material is placed horizontally A main frame movable on the end face of the first flange member, a sub-frame movable on the end face of the second flange member, and the main frame in a state where the flange members are vertically attached. And a traveling rail that is horizontally suspended by the sub-frame, and a pair of welding torches that are suspended on the traveling rail and that can automatically travel in the longitudinal direction of the traveling rail and move vertically. It is characterized by having a welding head kicked.

  According to a second aspect of the present invention, the travel rail is engaged with the main frame so that the engagement with the main frame is horizontally rotatable around a pin, and the engagement with the sub frame is provided in the sub frame. 2. The vertical stiffener welding device for bridge plate girder according to claim 1, wherein the traveling rail is suspended so as to be movable in a hole so that the angle in the horizontal direction can be adjusted.

  The invention according to claim 3 is characterized in that a roller mechanism capable of adjusting the frame height is provided at the lower ends of the main frame and the sub frame, and the vertical stiffener welding for bridge plate girders according to claim 1 or 2. Device.

  The invention according to claim 4 is the vertical stiffener welding device for bridge plate girder according to claim 3, wherein the roller mechanism is capable of adjusting the height of the main frame and / or the sub frame. .

  According to a fifth aspect of the present invention, in the vertical stiffener welding device for a bridge plate girder according to any one of the first to fourth aspects, the main frame and the sub-frame have the traveling rail on the vertical stiffener. And the traveling rail is adjusted to be parallel to the fillet welding direction of the vertical stiffener, the welding head is lowered, and a pair of welding torches are arranged with respect to each edge across the vertical stiffener. The bridge plate girder vertical, wherein the welding head is adjusted to have a predetermined interval, and both edges of the vertical stiffener are simultaneously welded to the horizontal fillet by the pair of welding torches while the welding head automatically travels on the traveling rail. It is a welding method of a stiffener welding apparatus.

  According to the vertical stiffener welding device for a bridge plate girder of the present invention, the main frame and the sub frame can be moved back and forth on the flange material, and a dedicated traveling lane is provided like a conventional gate-type device. Therefore, the device cannot be operated unless the bridge plate girder is installed at a specific location. However, in the present invention, the device can be easily moved and the bridge plate girder can be operated. Since the work space can be secured very flexibly because it can be installed on the top, there is an advantage that the welding apparatus can be installed and operated without being constrained by the narrow space and installation conditions.

  In addition, the welding head is not provided with a conventional large traveling device and is suspended from the upper part, so that the traveling space can be saved. For example, even when the distance between the vertical stiffeners is narrow, welding can be performed without any problem. Since welding is performed automatically, the welding speed and the distance to the welding line are significantly more accurate than manual operations, so that the welding quality can be improved and the weld bead aesthetics can be improved. Furthermore, since welding is automatically performed with high accuracy once the setting of the apparatus is completed, an operator other than a skilled worker can easily engage in the work, and work efficiency can be improved.

  According to the invention of claim 2, the traveling rail is engaged with the main frame so that the engagement with the main frame can be horizontally rotated around the pin, and the engagement with the sub frame can be moved by an elongated hole provided in the sub frame. The traveling rail is suspended so as to be adjustable in the horizontal angle, so that even if the vertical stiffener is not arranged at a right angle to the flange material, the traveling rail is predetermined by the configuration of the pin and the long hole. The horizontal stiffener and the traveling rail can be arranged in parallel.

  The inventions of claim 3 and claim 4 are characterized in that a roller mechanism is provided at the bottom of the main frame and the sub frame, and the height of the frame is also adjustable, so that a vertical stiffener welding for bridge plate girders is provided. Not only can the device be moved manually even if it is manually operated, but the traveling rail can be kept horizontal by adjusting the height of the main frame and / or the subframe even when the height of the flange material is different. Can be suspended.

  According to a fifth aspect of the present invention, in the vertical stiffener welding device for a bridge plate girder according to any one of the first to fourth aspects, the main frame and the sub-frame are connected to the vicinity of the vertical stiffener immediately above the traveling rail. The traveling rail is adjusted so that the traveling direction of the welding head and the fillet welding direction of the vertical stiffener are parallel to each other, the welding head is lowered, and a pair of welding torches are moved to the vertical stiffener. The horizontal edge of the vertical stiffener is simultaneously welded to the edges of the vertical stiffener by the pair of welding torches while the welding head automatically travels along the traveling rail. This is a welding method for the vertical stiffener welding device for bridge plate girders, which is characterized by the fact that the welding head traveling on the traveling rail is adjusted parallel to the vertical stiffener and installed. If the welding head is adjusted down to the welding line, the optimum automatic welding can be performed with the minimum control, the cost and work efficiency of the device can be improved, and workers other than skilled workers can easily engage in work. .

1 shows an embodiment of a vertical stiffener welding device for a bridge plate girder according to the present invention, wherein (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a right side view, and (e). Is a left side view. The welding head traveling state of the vertical stiffener welding device for a bridge plate girder according to the present invention is shown, (a) is a perspective view from two directions when reaching the terminal end, (b) is a perspective view during traveling, (c) is a starting end. The perspective view and side view from two directions at the time of standby are shown.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing an embodiment of a vertical stiffener welding apparatus for a bridge plate girder according to the present invention together with a positional relationship with a bridge plate girder 100, and FIG. 2 shows a welding head running state of the vertical stiffener welding apparatus for a bridge plate girder. It is a figure.
A vertical stiffener welding apparatus 10 for a bridge plate girder includes a bridge plate girder 100 in which a web material 101 is placed horizontally and a first flange material 102 and a second flange material 103 are vertically attached to opposite sides of the web material 101. A vertical stiffener 104 provided for reinforcement is horizontally welded to the web material 101. The main frame 20 is movable on the end face of the first flange material 102, and the second flange material 103 is The sub-frame 30 that can move on the end surface, the traveling rail 40 that is horizontally suspended by the first flange member 102 and the second flange member 103, and the traveling rail 40 that is suspended by the traveling rail 40 can automatically travel in the longitudinal direction of the traveling rail 40. It has a welding head 50 provided with a pair of welding torches 51 at the lower end that is movable in the vertical direction.

  The main frame 20 has an inverted U shape in plan view as shown in FIG. 1B, and a traveling roller 21 is placed on the bottom of the main frame 20 in this embodiment in order to move on the end face of the first flange member 102. Two sets are provided, and the main frame 20 can be moved easily. Further, a control panel 22 for performing automatic traveling of the welding head 50, welding control of the welding head, and the like is provided on the wall surface. In the present invention, the size of the control panel can be reduced because the number of sensors used for automatic welding is reduced as much as possible. The control panel 22 is attached to the main frame 20, and the bridge plate girder 100, particularly the first flange. There is no problem even if it is placed on the material 102.

  The sub frame 30 has a U-shape in plan view as shown in FIG. 1B, and the traveling roller 31 is moved to the bottom of the sub frame 30 in this embodiment in order to move on the end surface of the second flange member 103. A set is provided so that the sub-frame 30 can be moved easily. Further, a height adjusting portion 32 is provided between the sub frame 30 and each traveling roller 31 so that the height of the sub frame 30 can be adjusted. Thus, for example, even when the height of the second flange member 103 is low, the traveling rail 40 can be suspended in a horizontal state by adjusting the height of the sub-frame 30 by the height adjusting unit 32. . In the present embodiment, the height adjusting unit 32 is provided only on the sub-frame 30 side, but it can also be provided on the main frame 20 side and adjusted on both sides.

  The running rail 40 has a function for automatically running the welding head 50. The running end is horizontally suspended by the main frame 20 at the start end and the sub frame 30 at the end, and is basically arranged at a right angle in plan view with respect to the flange material. Has been. In this embodiment, the traveling rail 40 is provided with a linear bearing rail and a gear rack on a square pipe, and the welding head 50 is suspended at this portion to enable automatic traveling by a motor provided on the welding head 50.

  Further, the main frame 20 side which is the starting end of the running rail 40 is engaged with the pin coupling portion 42 so as to be horizontally rotatable, and a long hole provided in the sub frame 30 is provided on the sub frame 30 side which is the end. Even if the vertical stiffener 104 is not disposed at right angles to the flange material, the elongated slot coupling portion 43 is engaged so as to be finely adjustable, and the traveling rail 40 can be suspended so as to be adjustable in the horizontal direction. The traveling rail 40 can be horizontally rotated by a predetermined angle by the configuration of the pin coupling portion 42 and the long hole coupling portion 43, and the vertical stiffener 104 and the traveling rail 40 can be arranged in parallel.

  Also, a cable carrier travel rail 41 is provided so as to be horizontally suspended by the main frame 20 and the sub frame 30, and cables such as power lines and signal lines connected to the control panel 22 and the welding head 50 are used for cable carrier travel. The vehicle can be run and protected by a cable carrier provided on the rail 41.

The welding head 50 has an automatic traveling on the traveling rail 40 and a mechanism for moving up and down a pair of welding torches 51 provided near the lower end of the head.
As a mechanism for automatically traveling on the traveling rail 40, it is possible to travel by converting it into a linear motion by a pinion provided on the output shaft of the traveling geared motor and a gear rack provided on the traveling rail 40. The motor output shaft system includes a motor speed reduction mechanism, a coupling, an intermediate shaft, and a pinion. Further, two sets of linear bearings are provided on the welding head 50 and travel on the linear motion bearing rail on the travel rail 40. Note that micro switches are provided at both ends of the welding head 50 in the traveling direction, respectively, so that when the end of the traveling rail 40 is reached, the traveling is stopped to prevent a collision.

  The mechanism for moving the welding head 50 up and down is operated up and down by an electric cylinder with two guide rods and is equipped with a pair of semi-automatic welding welding torches 51 at the tip of the cylinder. A manual adjustment screw table is provided.

The welding method of the bridge plate girder vertical stiffener welding apparatus 10 is as follows. First, the web material 101 is placed horizontally, and the first flange material 102 and the second flange material 103 are perpendicular to the opposing side surfaces of the web material 101. It mounts so that the roller provided in each bottom part of the main frame 20 and the sub-frame 30 may get on each flange material end surface of the attached bridge plate girder 100. FIG.
Second, the bridge plate girder vertical stiffener welding apparatus 10 is manually moved so that the welding head 50 suspended from the running rail 40 is located immediately above the vertical stiffener 104 that is temporarily welded to the web material 101.
Third, the traveling rail 40 and the vertical stiffener 104 are adjusted and fixed using a horizontal angle adjusting mechanism by the pin coupling portion 42 and the long hole coupling portion 43 so that the traveling stiffeners 104 are parallel to each other. The main frame 20 and the sub frame 30 are also fixed to each flange material.
Fourth, the welding head 50 is made to stand by with the main frame 20 side of the running rail 40 as the starting end, and the welding torch 51 of the welding head 50 is lowered to the vicinity of the fillet weld line so that the vertical stiffener 104 is sandwiched between the two torches. The torches are adjusted by a manual adjustment screw table so that the tip of each of the two welding torches 51 has an optimum position and angle with respect to the weld line.
Fifth, fillet welding of both edges of the vertical stiffener 104 is started while automatically traveling the welding head 50 at a predetermined speed starting from the main frame 20 side of the traveling rail 40. When traveling / welding is stopped with the end of the traveling rail 40 on the sub-frame 30 side as the end, horizontal fillet welding of both edges of the vertical stiffener 104 is completed.
When welding is completed, the welding torch 51 is raised and the welding head 50 is moved to the traveling rail 40 starting end, the bridge plate girder vertical stiffener welding device 10 is moved to the next vertical stiffener 104, and the above-described second operation is started. .

  A vertical stiffener welding apparatus 10 for a bridge plate girder according to the present invention is a bridge plate in which a web material 101 is placed horizontally and a first flange material 102 and a second flange material 103 are vertically attached to opposite sides of the web material 101. In addition to the horizontal fillet welding of the girder 100, a horizontal fillet welding is possible not only for the vertical stiffener but also for the building material on which the bridge plate girder vertical stiffener welding device 10 can be placed in the same shape.

DESCRIPTION OF SYMBOLS 10 Vertical stiffener welding apparatus 20 for bridge plate girders Main frame 21 Traveling roller 22 Control panel 30 Subframe 31 Traveling roller 32 Height adjustment part 40 Traveling rail 41 Cable carrier traveling rail 42 Pin coupling part 43 Slot coupling part 50 Welding head 51 Welding Torch 100 Bridge plate girder 101 Web material 102 First flange material 103 Second flange material 104 Vertical stiffener

Claims (5)

Horizontal fillet welding is performed simultaneously on both edges of the vertical stiffener for reinforcement provided on the web material of the bridge plate girder to which the first flange material and the second flange material are attached to the respective sides of the opposite sides of the web material. Device for
In the state where the web material is placed horizontally and each flange material is attached vertically,
A main frame movable on an end face of the first flange member;
A sub-frame movable on an end surface of the second flange member;
A traveling rail horizontally suspended by the main frame and the sub-frame;
A welding head that is suspended from the traveling rail and that can automatically travel in the longitudinal direction of the traveling rail and that is movable in the vertical direction;
A vertical stiffener welding apparatus for a bridge plate girder characterized by comprising:   The running rail is engaged with the main frame so as to be horizontally rotatable around a pin, and is engaged with the sub frame so as to be movable through an elongated hole provided in the sub frame. The vertical stiffener welding device for a bridge plate girder according to claim 1, wherein the traveling rail is suspended so as to be adjustable in angle in the horizontal direction.   The vertical stiffener welding apparatus for bridge plate girder according to claim 1 or 2, wherein a roller mechanism capable of adjusting a frame height is provided at the bottom of the main frame and the sub frame.   The vertical stiffener welding device for a bridge plate girder according to claim 3, wherein the roller mechanism is adjustable in height of the main frame and / or the sub frame. The vertical stiffener welding device for a bridge plate girder according to any one of claims 1 to 4,
Moving the main frame and the sub-frame so that the running rail is in the vicinity immediately above the vertical stiffener;
Adjusting the traveling rail so that the traveling direction of the welding head and the fillet welding direction of the vertical stiffener are parallel,
The welding head is lowered, and a pair of welding torches are adjusted so as to be at a predetermined interval with respect to each edge across the vertical stiffener,
Horizontal fillet welding of both edges of the vertical stiffener simultaneously by the pair of welding torches while the welding head automatically travels on a traveling rail;
A welding method for a vertical stiffener welding device for bridge plate girders.

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