JP2506242B2 - Shaped steel assembly equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to, for example, H-section steel and I
The present invention relates to the assembly and welding technology of welded structures such as shaped steel.

[0002]

2. Description of the Related Art Conventionally, a method of assembling a welded structure such as an I-shaped steel is roughly classified into a vertical assembly method and a horizontal assembly method. The former is a method of assembling the web material in a standing state, and the latter is a method of assembling the web material in a horizontal state.

Generally, the vertical composition method is more frequently used because it is easier to automate. However, in the case of a bridge or the like having a large girder height, the horizontal composition method is adopted in consideration of safety. is there.

In the case of the vertical assembling method, most of them are of a work moving type, and a member for each flange on one side is inserted into an assembling apparatus which is a combination of horizontal pushing rolls and vertical pushing rolls like a universal rolling mill and left and right sides are inserted. Is assembled by fillet welding and tack welding. To assemble the flange on the opposite side, it is necessary to turn it upside down and repeat it.

On the other hand, in the case of the horizontal assembly method, when assembling by the work moving method, it is necessary to devise the work holding and conveying device according to the change of the girder height, and the device becomes complicated.

Further, when the work is fixed by the horizontal assembly method (this is a general method which has been conventionally performed manually), it is difficult to automate, and tack welding is at most semi-automatic welding. The current situation is that they rely on human resources.

As a conventional example, the I-shaped steel assembling and welding apparatus described in Japanese Patent Publication No. 53-936 is of a horizontal work-piece work transfer system. Is more than twice the work length,
Moreover, in the case of a work whose flange width changes like the I-shaped steel of a bridge, the height of the flange receiving roll must always be adjusted according to the flange width. In addition, the flange feed roller pressed against the flange by the hydraulic cylinder is rotated for movement, but since the entire work is transferred while tack welding, the amount of tack welding is to transfer the moving force to the web. You have to do enough.

As described above, even in the horizontal assembly method, if the work transfer method is used, the equipment space becomes large, the number of table rollers for transfer is doubled, and the mechanism of the flange receiving roller becomes complicated in the bridge I girder. Further, even with tack welding, the amount of welding is unnecessarily large.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the above-mentioned conventional devices and the like, and an object of the present invention is to provide a device that minimizes the space occupied by a factory and to install left and right flanges. At the same time, it is an object to provide a horizontal assembly stationary assembly apparatus for efficiently assembling.

[0010]

The apparatus for assembling shaped steel of the present invention comprises a frame holding and pressing device, a carry-out conveyor device, a lower web centering roller and a cradle comprising a traveling device equipped with a tack welder, which are opposed to each other. It is arranged on the left and right, one pedestal is fixed, and the other is movable in the left and right directions.
The pair of flange gripping and pressing devices are capable of pivoting 90 degrees outwardly from each other, and the upper web centering rollers are respectively movably mounted thereon, and each pair of upper and lower web centering rollers are synchronously moved.
It is characterized in that the lower surface of the bump is temporarily welded .

[0011]

According to the present invention, the flange members are placed on the fixed base and the movable base, respectively, the respective flange members are clamped to perform centering, and then the movable base is moved according to the width of the web material to carry it out. After placing the web material on the transfer roller on the conveyor, each stand is raised up 90 degrees.

Then, after the flange members are pressed from behind the respective flange members by the cylinder device to press the flange members onto the web members, the lower intersections of the web members and the respective flange members are made parallel to the transfer direction of the transfer roller. Upward fillet welding is performed at predetermined locations by the running web centering upper and lower rollers and the welding device, and the tack welding is completed.

Then, after opening the cylinders and clamps of the respective mounts, the assembled shaped steel is transferred to the welding apparatus by driving a transfer roller.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments shown in the drawings.

FIG. 1 is a plan view of an I-shaped steel assembling apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the apparatus, and FIGS. 3 and 4 are A of FIG.
It is -A sectional drawing.

In the figure, 1 is a fixed mount for mounting a flange member F, 2 is a movable mount for mounting the flange member F on the opposite side, and the movable mount 2 is mounted on a rail 4 by wheels 3. You can drive.

Flange gripping and pressing devices 1a and 2a are mounted on the fixed base 1 and the movable base 2, respectively, and flange centering for centering the flange material F to match the center line that divides the flange material F in two in the length direction. Rollers 5 and 6 and fall prevention rollers 7 and 8 are provided, and the centering rollers 5 and 6 and the fall prevention rollers 7 and 8 clamp the flange F. The centering rollers 5 and 6 can be opened and closed by clamping motors 9 and 10.

The fixed mount 1 and the movable mount 2 each have 9
A hydraulic cylinder 11, which is equipped with a mechanism capable of turning 0 degrees,
The flange gripping and pressing devices 1a and 2a are rotated by 90 degrees so as to be orthogonal to each other by 12. The web material W is placed on the carry-out conveyor 13 by a crane with a magnet or the like.

At both ends of the movable mount 2, hydraulic cylinders 14,
15 is attached so that the movable pedestal 2 can move on the rail 4 by the operation of the hydraulic cylinders 14 and 15. The position of the movable pedestal 2 is determined by the width of the web material W.

The respective flange materials F, F are moved in the lengthwise direction by the centering rollers 5, 6, or the web material W is moved by the carry-out conveyor 13 to adjust the end face alignment between the flange material and the web material.

Each of the flange gripping and pressing devices 1a and 2a is equipped with a large number of pressure air cylinders 16 and 17 for crimping, and first, the flange material F on the moving side is webbed by the crimping air cylinders 17 on the movable base 2 side. Press on the material W. Next, the air cylinder 1 for crimping on the side of the fixed base 1
At 6, the fixed flange material F is pressed against the web material W.
In the figure, 18 and 19 are rollers for transferring the web material W.

Next, as shown in FIG. 6, the upper web centering roller 21 and the lower web centering roller 22 of the web material W are set at the end surface positions of the work. The upper web centering roller 21 is driven by the motor 23.
The centering position for correcting the deflection of the web material W and holding it at a fixed position is adjusted. Further, the upper web centering roller 21 and the motor 23 can travel on the rails 20 provided on the respective flange gripping and pressing devices 1a and 2a in electrical synchronization with the traveling speed of the lower web centering roller 22 described later. I am trying.

Next, traveling devices 24 and 25 equipped with the CO ₂ automatic welding machine and the lower web centering roller 22 are installed at two positions, the fixed side of the flange and the moving side. The traveling devices 24 and 25 perform centering of the web on the rails 26 and 27 by the pair of upper and lower web centering rollers 21 and 22, and along the welding line of the lower joining point between the flange material F and the web material W. Run and perform temporary welding for a specified length. Reference numeral 211 is a handle for adjusting the position of the upper web centering roller 21 according to the thickness of the web material W.

6 and 7, 28 is an air cylinder for pressing the centering lower hold roller 22 against the web material W, 29 is a welding torch, 30 is a welding line tracing sensor, and 31 and 32 are for welding line tracing. XY slider, 33
Is a traveling drive motor, and 34 is a welding wire supply device.

In the present invention, the two automatic welding machines are self-propelled while the work is fixed, and the flange materials F and F are simultaneously temporarily welded at both ends of the web material W.

Next, the centering rollers 5 and 6 of the flange material F, the fall prevention rollers 7 and 8, and the pressing cylinder 1
6, 6 and 17 are opened, and the work is carried out by the carry-out conveyor 13 to the main welding process device of the next process.

As described above, the characteristic feature of the present invention is the horizontal assembly method in which the web W is placed horizontally, assembled, and temporarily welded, and the work is fixed and the welding machine is self-propelled. This is a method of simultaneously welding the flange materials on both sides.

[0028]

As described above, according to the present invention, since the work is fixed, the length of the device is shortened, the transfer roller is halved, and the device is simplified. Further, the flange materials at both ends of the web material can be assembled and processed at the same time, so that there is no need to reverse the work, and the work efficiency of the assembly processing is improved.

Further, as in the embodiment, if the temporary welding is performed only on the lower side of the web surface and the web surface is received by the transfer roller and conveyed to the next step, the upper side surface can be directly welded and inverted. , The assembly efficiency can be greatly improved.

[Brief description of drawings]

FIG. 1 is a plan view of a shaped steel assembly device according to an embodiment of the present invention.

FIG. 2 is a side view of the shaped steel assembly device of FIG.

3 is a state diagram when the flange member is in a horizontal state in the AA sectional view of FIG. 1. FIG.

FIG. 4 is a state diagram when the flange member is in a vertical state in the AA sectional view of FIG. 1.

FIG. 5 is an explanatory diagram of centering of a flange.

FIG. 6 is a side view of the welding machine.

FIG. 7 is a front view of the welding machine.

[Explanation of symbols]

 1 Fixed frame 1a, 2a Flange gripping and pressing device 2 Movable frame 3 Wheels 4 Rails 5,6 Flange centering roller 7,8 Fall prevention roller 9,10 Clamping motor 11,12 90 degree turning hydraulic cylinder 13 Unloading conveyor 14,15 Hydraulic cylinders for moving gantry 16,17 Pressing air cylinders for crimping 18,19 Rollers 20 Upper web centering rollers Traveling rails 21 Upper web centering rollers 22 Lower web centering rollers 23 Motors 24,25 Traveling devices 26,27 Rails 28 Air cylinders 29 Welding torch 30 Sensor 31, 32 XY slider 33 Travel drive motor 34 Welding wire supply device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahide Kawaguchi 1-1-27 Higashiootani, Tobata-ku, Kitakyushu City, Fukuoka Prefecture (72) Tomoaki Mihara 1-1-38-406, Nijima, Wakamatsu-ku, Kitakyushu City, Fukuoka Prefecture (72) 56) References JP 63-126680 (JP, A) JP 1-258869 (JP, A)

Claims (1)

(57) [Claims] 1. A gantry consisting of a flange gripping and pressing device, a carry-out conveyor device, a traveling device equipped with a lower web centering roller and a tack welder is disposed facing each other on the left and right, and one gantry is fixed and the other is fixed. Can be moved in the left-right direction, and the two sets of the flange gripping and pressing devices can be swung 90 degrees outward from each other, and the upper web centering rollers are movably mounted respectively, and the upper and lower web centering rollers are synchronized with each other. And run it
An apparatus for assembling shaped steel, characterized in that the lower surface of the web immediately after the line is tack-welded .