JPH0545350B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a section steel welding device.

BACKGROUND ART In general, shaped steel sections made of special materials, such as stainless steel shaped steel, are manufactured by welding plates. By the way, in conventional welding, the temporarily welded flange and web were placed on a predetermined surface plate and positioned using a fixing jig, and then the main welding was performed.

Problems to be Solved by the Invention According to the above-mentioned conventional manufacturing method, large thermal deformation occurs during welding due to the poor thermal conductivity and high coefficient of linear expansion of stainless steel, so a press machine or the like is used after welding. must be corrected by
The problem was that it was very time consuming.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a section steel welding apparatus that can solve the above-mentioned problems.

Means for Solving the Problems In order to solve the above-mentioned problems, the shaped steel welding apparatus of the present invention provides a shaped steel holder consisting of a pair of upper and lower beams and a connecting plate that connects the ends of the pair of beams. is supported rotatably around a horizontal axis, one of the beams is provided with a plurality of restraints for restraining the section steel, and the other beam is provided with a plurality of straightening tools for straightening the section steel. Moving bodies that can freely approach and move away from the shaped steel holder are arranged on the left and right sides of the holder, and each of these moving bodies is provided with a traveling body that can freely run along the beam of the shaped steel holder, Each of these traveling bodies is provided with a welding tool for performing main welding of the temporarily attached section steel held by the section steel holder.

Operation In the above configuration, when performing main welding of a shaped steel, for example, an H-shaped steel, the temporarily attached shaped steel is first fixed to the shaped steel holder using a restraint. Next, after the movable body is brought close to the section steel holder, main welding is performed on one flange side using a welding tool while the movable body is traveling. Next, after separating the movable body, the section steel holder is reversed by 180°. After this, main welding on the other flange side may be performed in the same manner as above. Further, after welding is completed, deformation of the section steel due to welding heat is corrected by using a restraint tool and a correction tool in combination.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a shaped steel holder that holds the shaped steel 2 in a temporarily attached state, and is configured to be rotatable around a horizontal axis by a rotation drive device 3. This shaped steel holder 1 includes a pair of upper and lower beams 4A, 4B, a pair of front and rear circular connecting plates 5A, 5B that connect the ends of these pair of beams 4A, 4B, each of these circular connecting plates 5A,
It is composed of a pair of left and right support rollers 6 that support the roller 5B rotatably around a horizontal axis. Also,
The rotation drive device 3 includes a driven side sprocket 8 attached to a horizontal shaft body 7 protruding from the center of a circular connecting plate 5A at the front, and a driving side sprocket 8 that is operatively connected to the driven side sprocket 8 via a chain 9. It consists of a sprocket 10 and an electric motor 11 that rotates the drive sprocket 10. Therefore, by operating the electric motor 11, the entire section steel holder 1 can be rotated around the horizontal axis. A hole 12 for loading and unloading the section steel 2 is formed in the center of the rear circular connecting plate 5B. Further, the lower beam 4A is provided with a plurality of (for example, 17) restraints 13 at predetermined intervals, and the upper beam 4A corresponds to the predetermined restraints 13.
B is provided with a plurality of (for example, five) correction tools 14, and a receiving plate 15 is provided at a position corresponding to the remaining restraint tools 13. The restraint tool 13 and correction tool 14 are comprised of hydraulic cylinder devices 16A, 16B and contact members 18A, 18B attached to the tips of the rods 17A, 17B. Therefore, the section steel 2 can be restrained between both beams 4A and 4B by the restraint device 13,
Moreover, the deformation of the section steel can be corrected by the correction tool 14. Further, on the lower beam 4A, there are carrying rollers 1 for guiding and carrying in the section steel 2.
A plurality of rollers 9 are arranged, and each loading roller 19 has sprockets 20, 21 and a chain 2.
It is rotationally driven by an electric motor 24 via 2 and 23. At the left and right positions of the shaped steel holder 1, movable bodies 26 are provided, respectively, which are driven by a moving drive device 25 and can move toward and away from the beams 4A, 4B. That is, the movable body 26 includes a movable body 27 having a length substantially equal to the entire length of the beams 4A and 4B, and a plurality of movable bodies 27 attached to the lower surface of the movable body 27 and arranged in a direction perpendicular to the beams 4A and 4B. It consists of moving wheels 29 guided by rails 28 of. Further, the moving drive device 25 is arranged perpendicularly to the beams 4A and 4B, and a female threaded body 30 on the moving body 27 side
The rotary screw shaft 31 is screwed into the rotary screw shaft 31, and an electric motor 32 rotates the rotary screw shaft 31. Further, on the upper surface of the movable body 27, a traveling body 33 that can run freely along the beams 4A and 4B is arranged, and each of the traveling bodies 33 is provided with a welding tool (welding torch) 34. . Of course, the traveling body 33 is provided with traveling wheels 36 that can freely run on rails 35 arranged on the upper surface of the moving body 27.

Next, welding work for H-section steel will be explained.

First, the temporarily attached shaped steel 2 is carried onto the lower beam 4B through the hole 12 of the rear circular connecting plate 5B by the carrying roller 19, as shown by arrow A in FIG. Next, the restraint 13 is activated to fix the section steel 2 between the contact member 18A and the receiving plate 15, and at the same time, a portion corresponding to the deformation due to heat input during welding is applied in the opposite direction to the deformation. gives the deformation of In this state, the movable body 26 is brought close to the beams 4A and 4B and the welding tool 34 is aligned with the welding location, and then welding is started and the movable body 33 is run to connect the web of the section steel 2 and one side. Perform main welding with the flange. When this welding is completed, the moving body 26
After separating the motor 1 from the beams 4A and 4B,
1 to invert the shaped steel holder 1 by 180°. Then, after the moving body 26 is brought close to the beams 4A and 4B again, the main welding between the other flange and the web is performed in the same manner as above.

When the welding is completed, the center restraint 13 is released leaving the restraints 13 at both ends, and then the correction tool 14 is released.
is activated to straighten the section steel. The amount of correction at this time is predetermined according to the size of the section steel to be welded, and the amount of protrusion of the rod 17B of the hydraulic cylinder device 16B is detected via the rack and pinion mechanism and encoder and automatically controlled. Ru.

Effects of the Invention According to the above configuration of the present invention, after main welding is performed by supporting the section steel on the section steel holder via the restraint device, the thermal deformation that occurs during welding can be immediately corrected using the correction tool. Compared to the case where a separate press machine or the like is used for straightening, the straightening work can be performed quickly and easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a section steel holder, FIG. 2 is a plan view of the same, and FIG.
The figure is an overall sectional view at a position corresponding to the - arrow direction in FIG. 1. 1... Shaped steel holder, 2... Shaped steel, 3... Rotation drive device, 4A, 4B... Beam, 5A, 5B...
Circular connecting plate, 6... Support roller, 13... Restraint tool, 14... Correction tool, 15... Receiving plate, 16A,
16B...Hydraulic cylinder device, 18A, 18B
...Abutting member, 25...Movement drive device, 26...
...Moving body, 33... Traveling body, 34... Welding tool.

Claims (1)

[Claims] 1. A shaped steel holder consisting of a pair of upper and lower beams and a connecting plate that connects the ends of the pair of beams is supported rotatably around a horizontal axis, and the shaped steel is restrained to one of the beams. In addition to providing a plurality of restraints, a plurality of correction tools for correcting the shaped steel are provided on the other beam, and movable bodies that can freely approach and move away from the shaped steel holder are arranged at the left and right positions of the shaped steel holder. Each of these movable bodies is provided with a traveling body that can run freely along the beam of the shaped steel holder, and the main welding of the temporarily attached shaped steel held by the shaped steel holder is performed on each of these moving bodies. A shaped steel welding device characterized in that each welding tool is provided for performing the following steps.