JPH09271989A - Manufacture of grating beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a grating beam having rigidity in good efficiency. SOLUTION: Plural plates 3 for positioning boring a positioning hole 3a are fitted to a prescribed position on a frame base B and a joining plate 1 is inserted into the positioning hole 3a in each plate 3 for positioning. The end part 2a in plural beam constituting materials 2 is laid on each joining plate 1 to weld the joining plate 1 and the end part 2a of the beam constituting material 2. Further, the other joining plate 1' is laid on the position of the end part 2a of the beam constituting material 2 faced to the joining plate 1 and the other joining plate 1' and the end part 2a of the beam constituting material 2 are welded to manufacture the grating beam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a lattice beam used for a frame structure such as a ceiling of a building.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 60-43833 has been disclosed as a method for manufacturing a lattice beam.

That is, a plate on which pins are erected is mounted on a pedestal, a joint plate is placed on a portion of the plate surrounded by the pins, and the ends of the beam components are fitted between the pins to join the joint plates. Overlaid on top, weld the joint plate and the beam component material, stack the joint plate on the portion surrounded by the pins on the beam component material, weld the joint plate and the beam component material to form a lattice beam, then This is a method of manufacturing a lattice beam in which the lattice beam is inverted and the two joint plates and the beam component are welded.

[0004]

However, in the above-mentioned conventional method of manufacturing a lattice beam, the joining plate and the beam constituent member are placed on the plate on which the pins are erected, and the joining plate and the beam constituent member are placed. Since the and were welded, the pins were located at the edge of the joint plate, the workability of welding was not good, and it was difficult to weld up to the vicinity of the edge of the joint plate.

Further, since the ends of the beam constituent members are fitted between the pins, it is necessary to mount the plates on which the pins are erected at different positions according to the lattice angle of the lattice beam on the gantry, which is troublesome to manufacture the gantry. Was occurring.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention attaches a plurality of positioning plates having positioning holes at predetermined positions on a gantry, and positions the positioning holes of each positioning plate. Insert the joint plate into
Placing the ends of the plurality of beam components on each joint plate, welding the joint plate and the end of the beam component, further, at a position facing the joint plate at the end of the beam component, Another joining plate is placed, and the other joining plate and the end of the beam component are welded to manufacture the lattice beam.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A method of manufacturing a lattice beam according to the present invention is to produce a lattice beam used for a frame such as a ceiling of a building in the following manner.

That is, first, a frame is formed in a lattice shape by using a square pipe or H-shaped steel, and a positioning plate having circular positioning holes is attached at each intersection position on the frame.

Next, a disc-shaped joining plate is inserted into each positioning hole from above the gantry.

Next, the ends of the four beam components are abutted against each other at a substantially central position on the joint plate and placed in a cross shape, and the ends of the beam components and the joint plate are upwardly moved at predetermined positions. Weld more.

Next, another joining plate is placed on the upper surface of the end of the beam constituent member at a position facing the joining plate already welded to the end of the beam constituent member, and the side edge of the other joining plate and the beam. The upper surfaces of the end portions of the constituent materials are welded from above.

Then, the temporarily assembled lattice beam is removed from the gantry, the lattice beam is turned upside down, and the other joining plates are fitted into the positioning holes of the respective positioning plates again, and the lattice beam is placed on the gantry. Then, the side edge of the joint plate and the upper surface of the end portion of the beam constituent member are welded from above, and another joint plate and the end portion of the beam constituent member are welded at a predetermined location between both joint plates.

Therefore, since the welding work between the joining plate and the beam component is performed while the joining plate is inserted into the positioning plate, the edge of the joining plate interferes with the welding work. Welding work can be performed without any obstacles.

Therefore, the welding work can be performed smoothly, and the welding can be performed up to the vicinity of the edge of the joint plate.

Further, the mounting position of the positioning plate on the pedestal is simply changed, and the position is not limited to the square lattice beam.
It is possible to manufacture grating beams with various grating angles.

[0016]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an explanatory view showing a method of manufacturing a lattice beam according to the present invention. First, as shown in FIG. A positioning plate 3 having circular positioning holes 3a is attached at each intersection of the pipes P (see (a)).

Although the gantry B is formed in a flat shape in this embodiment, the gantry B may be formed in a curved shape depending on the shape of the lattice beam A to be manufactured.

Next, a disc-shaped joining plate 1 is provided in each positioning hole 3a.
Is inserted from above the mount B (see (b)).

Then, the ends 2a of the four beam components 2 are abutted against each other at a substantially central position on the joining plate 1 and placed in a cross shape, and the ends 2a of the beam components 2 are joined at predetermined positions. Weld plate 1 from above (see (c)). In the figure, 4 indicates a welded portion.

At this time, there are no obstacles at the edge of the joining plate 1 that hinder the welding work, the welding work can be carried out smoothly, and welding can be performed up to the vicinity of the edge of the joining plate 1. it can.

Next, another joining plate 1'is attached to the upper surface of the end 2a of the beam component 2 and the joining plate 1 already welded to the end 2a of the beam component 2.
Then, the other side of the joining plate 1'and the upper surface of the end 2a of the beam component 2 are welded from above (see (d)).

In this state, the beam components 2 are connected to each other by the joint plates 1 and 1 ', and the lattice beam A is temporarily assembled on the frame B.

Then, the temporarily assembled lattice beam A is removed from the gantry B, the lattice beam A is turned upside down, and each other joining plate 1'is again fitted into the positioning hole 3a of each positioning plate 3 to form the lattice. The beam A is placed on the pedestal B, and the side edge of the joint plate 1 and the beam component 2
While welding the upper surface of the end portion 2a of the above from above, the other joint plate 1'and the end portion 2a of the beam component 2 are welded at a predetermined location between both joint plates 1, 1 '(see (e)). .

Thus, the lattice beam A as shown in FIG.
Can be manufactured, and the manufactured lattice beam A is used as a frame such as a ceiling of a building.

In this embodiment, since the case where the planar lattice beam A is manufactured is shown, only one type of the pedestal B is required. However, when the curved lattice beam A is manufactured,
Two types of mounts B corresponding to the front and back shapes of the lattice beam A are prepared.

Further, after the temporarily assembled lattice beam A is removed from the gantry B, the lattice beam A is turned upside down, and the lattice beam A is placed on the gantry B again, each part is welded. Beam A
May be removed from the gantry B, and each part may be welded in a state where the lattice beam A is erected on the ground.

Before removing the lattice beam A from the mount B,
Another joining plate 1'and the end 2a of the beam component 2 may be welded at a predetermined location from between the joining plates 1 and 1 '.

In this embodiment, the joint plates 1, 1'are disc-shaped so that the lattice angle a of the lattice beam A can be freely set.

Therefore, only by changing the mounting position of the positioning plate 3 on the pedestal B, the square lattice beam A is formed.
Not limited to the above, it is possible to manufacture the lattice beams A having various lattice angles a.

At this time, a point indicating the center and a line indicating the angle are formed on the surfaces of the joining plates 1 and 1'and the positioning plate 3, and the points and the line are used as marks. Bonding plate 1,1 '
The end 2a of the beam component 2 may be placed on top.

Further, since the joining plates 1 and 1'and the positioning holes 3a have a circular shape, when the joining plates 1 and 1'and the positioning holes 3a are formed by press working, an edge portion is not formed on the cutting die. Since the cutting die is less frequently damaged, it is possible to inexpensively form a large number of joining plates 1 and 1 ′ and the positioning holes 3a.

As described above, by using the disc-shaped joining plates 1 and 1 ', a unique effect can be obtained.
By forming the positioning holes 3a into which the joining plates 1 and 1'can be inserted in the positioning plate 3, the welding work can be performed in the state where there are no obstacles at the edge of the joining plate 1 that hinder the welding work. Therefore, the welding work can be performed smoothly, and the welding can be performed up to the vicinity of the edge of the joint plate 1. Therefore, the shapes of the joining plates 1, 1'and the positioning holes 3a are not limited to circular shapes, and may be polygonal shapes.

[0034]

The present invention is embodied in the form described above and has the following effects.

That is, a plurality of positioning plates having positioning holes are attached to a predetermined position on the gantry, a joining plate is inserted into the positioning holes of each positioning plate, and a plurality of beams are provided on each joining plate. Place the end of the component, weld the joint plate and the end of the beam component, and place another joint plate at the position of the end of the beam component facing the joint plate. , Since the other joining plate and the end of the beam component are welded to manufacture the lattice beam, the welding work is performed while the joining plate is inserted into the positioning plate. Welding work can be performed without any obstacles that hinder the welding work at the edge, the welding work can be performed smoothly, and welding can be performed up to the vicinity of the edge of the joint plate. Can be manufactured efficiently.

Moreover, not only the square grid beam but also the grid beam having various grid angles can be manufactured only by changing the mounting position of the positioning plate on the gantry.

Further, since the joining plate and the positioning hole are formed in a circular shape, when the joining plate and the positioning hole are formed by press working, an edge portion is not formed on the cutting die and the cutting die is less frequently damaged. In addition, a large number of joining plates and positioning holes can be formed at low cost, and the manufacturing cost of the lattice beam can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view illustrating a method of manufacturing a lattice beam according to the present invention.

FIG. 2 is a perspective view showing a pedestal.

FIG. 3 is a front view of a grid beam manufactured by using the grid beam manufacturing method according to the present invention.

[Explanation of symbols]

 A Lattice beam 1 Bonding plate 2 Beam component 3 Positioning plate

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location E04C 3/40 E04C 3/40

Claims (1)

[Claims] 1. A positioning hole (3) is provided at a predetermined position on the frame (B).
Attach the positioning plates (3) with
Joining plate to the positioning hole (3a) of each positioning plate (3)
Insert the (1) and place the ends (2a) of the multiple beam components (2) on each joining plate (1) to join the joining plate (1) and the beam components.
Weld the end part (2a) of (2), and further join another end plate (2) of the beam component (2) at a position facing the joint plate (1).
(1 ') is placed and the other joint plate (1') and the end of the beam component (2)
(2a) is welded with a method of manufacturing a lattice beam.