JPH0740564Y2 - Connection fittings in steel structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting fitting used for connecting steel frames such as a trunk and a pillar in a steel structure or a hull and a truss.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned steel frame structure, when connecting a body to a column or connecting a mower to a truss, a connecting metal fitting A as shown in FIG. 8 has been used. . The connecting metal fitting A is composed of a bottom piece a and a vertical piece b formed by bending an iron plate into an L shape.
A bolt hole c for inserting the connecting bolt is formed therein. Then, in order to connect the trunk or moire to the pillar or truss by using the connecting bolt A, first place the bottom piece a portion of the connecting fitting A at a predetermined position of the pillar or truss to which the trunk or moire is to be connected. After fixing by welding and connecting and fixing the vertical piece b of the fixed connecting metal fitting A to the trunk and moya by bolts, the wall material and roof material are attached to the trunk and moya by hook bolts. It is a thing.

[0003]

[Problems to be Solved by the Invention]
The shape-connecting metal fitting A is generally formed by bending a metal plate, but it needs a certain thickness in order to provide strength capable of supporting a load such as a steel frame to be connected. However, as the thickness of the metal plate increases, the radius of the bent portion of the bottom piece a and the vertical piece b when bent becomes large, and the outer surface of the bent portion becomes round. For this reason, when the length w of the bottom piece a is short, the center of gravity is high and the overall balance becomes poor. For example, when this connection fitting is placed on a truss and welded, the connection fitting A is separated from the vertical piece b. It easily falls toward the outside, making positioning and welding work difficult. For this reason, the length w of the bottom piece a needs to be set to a relatively large length.

Further, as described above, the connecting fitting A fixed to the truss or the pillar and the fog or body bra are connected through bolts to the bolt hole portions formed in the connecting fitting A and the fog or body bra, respectively. However, the bolt holes are formed in the body bra and haze at predetermined intervals. However, since the intervals between the trusses and the columns that connect them may not always be as designed,
When connecting and fixing the metal fitting A to the truss or pillar, measure the actual spacing between adjacent trusses or pillars with marking lines, etc. provided in advance on the trusses or pillars. Correcting the dimensional difference from the position of the bolt holes
Although it is necessary to determine the welding position of No. 2, the positioning work of the connecting metal fitting A was very troublesome. Further, in the case of this connecting metal fitting A, since the bent portion of the bottom piece a and the vertical piece b has a large radius, the vertical piece is attached to the reference line Y drawn on the pillar or truss for positioning the connecting metal fitting A. It is also difficult to combine the front faces of b with each other, and it is also difficult to arrange the connecting fittings A to be welded to the adjacent columns and trusses in a straight line.

Further, in the case of the conventional connecting metal fitting A as described above, since an iron plate or the like is simply bent and formed into an L-shape on the bottom piece a and the vertical piece b, the bottom piece a and the vertical piece. There is also a possibility that the bending angle with respect to b may change with time depending on the weight of the yam or body buttocks connected by the connecting metal fitting A, and the weight of the roof material or wall material attached to these.

Therefore, in the present invention, in view of the problem of the L-shaped connecting fitting in the conventional steel frame structure as described above, even if the length of the bottom piece is short, it is difficult to fall down, and the material cost is reduced by shortening the length of the bottom piece. It can be rationalized, and facilitates positioning of welding positions on trusses, columns, etc.
It is intended to provide a connecting fitting in a steel frame structure capable of maintaining the bottom piece and the vertical piece at a constant bending angle even if a load such as a steel frame to be connected with high strength is applied.

[0007]

Was to achieve the above object, there is provided a means for solving]
The connecting fitting in the steel structure according to the present invention is
In a connecting metal fitting formed by bending and forming a bottom piece and a vertical piece,
Bending of the bottom piece and the vertical piece on the extension of the bottom piece on the outer surface of the bent part
A concave hole is formed by press molding from the inner surface side to the outer surface side.
To form a support protrusion on the outer surface of the bent portion.
It is characterized by that.

In the above-mentioned connecting fitting, the vertical piece is a bolt.
A hole is formed and the position of the bolt hole is used as a reference.
A positioning mark can be provided.

[0009]

The above-described connecting fitting according to the present invention prevents the connecting fitting from falling toward the outside of the vertical piece by the supporting projections protruding from the bent portions of the bottom piece and the vertical piece. A stable standing state can be maintained. Moreover, the support protrusion is provided.
To do this, from the inside of the bent part of the bottom piece and the vertical piece to the outside
By forming a concave hole by press molding toward the
The metal plate of the bent part projects toward the outer surface side by the amount of the hole,
Therefore, the support protrusion can be easily formed.

Next, in the case where the vertical piece of the connecting fitting is provided with a bolt hole and a positioning mark based on the bolt hole, the actual intervals between adjacent trusses and columns in the steel frame structure are set. Measure it with marking lines etc. provided on them, check the dimensional error between this measured value and the position of the bolt holes formed in the hull and body to be connected to these, and then connect it to the truss or pillar The welding position of the metal fitting is determined by shifting the position of the positioning mark provided on the metal fitting with respect to the welding position of the metal fitting based on the marking line of the truss or pillar.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a connecting fitting 1 according to the present invention.
Fig. 2 is a longitudinal sectional view of a main part showing the connecting portion, in which the moire 3 is connected to the truss 2 of the roof by using, and the slate plate 4 is attached to this. .

The work procedure in this case is as follows. That is, first, the connecting fittings 1 according to the present invention are linearly arranged at a predetermined position on each truss 2 made of H steel and fixed by welding. Next, a moire 3 made of C-shaped steel is additionally provided over the connecting fittings 1 ... Arranged on each truss 2, and the bolt holes 11, which are formed in advance in the connecting fitting 1 and the fog 3,
By inserting the fixing bolt 5 into the and 31 parts and fastening them with the nut 6, the truss 2 and the fog 3 are connected to the fitting 1
Connect and fix via. Then, a washer 8 made of asphalt felt is inserted into the screw shaft 72 in advance, and a nut 9 is lightly screwed onto the washer 8 so that the hook-shaped portion 71 at the tip of the hook bolt 7 is formed.
Is inserted through a hole 41 provided in the ridge portion of the corrugated plate-shaped slate plate 4 that constitutes the roof, and the hook-shaped portion 71 at the tip of the hook bolt 7 is locked to the bent portion 32 of the fog 3 and then the nut 9 The roof is constructed by tightening the and fixing the slate plate 4 to the fog 3 with the hook bolts 7. In this case, as described above, the hook bolt 7 is inserted into the hole 41 of the slate plate 4 in advance and temporarily fixed thereto, and the hook-shaped portion 71 at the tip of the hook bolt 7 is locked to the fog 3 to make this slate. The work of attaching the plate 4 to the fog 3 can be performed by one person.

Details of the connecting fitting 1 are shown in FIGS. The connecting fitting 1 is formed by bending a metal plate at a substantially right angle to form an L-shape with a bottom piece 12 and a vertical piece 13. A bolt hole 11 is formed in the vertical piece 13 portion. The bent portion 14 of the bottom piece 12 and the vertical piece 13 has a larger radius as the plate thickness of the connecting fitting 1 becomes thicker.
The outer surface of 4 becomes round. Therefore, when the length W1 of the bottom piece 12 is shorter than the length W2 of the vertical piece 13 and the center of gravity is high, the vertical piece 13 is prone to fall outward, and the connecting metal fitting 1 is used for the truss 2
Positioning and welding work on top is difficult. In view of this, in the present invention, in the connecting fitting 1, the support projection 15 that protrudes on the extension line X of the bottom piece 12 is provided on the outer surface side of the substantially central portion in the width direction of the bent portion 14 of the bottom piece 12 and the vertical piece 13. By vertically projecting the vertical piece 13
Also, by supporting the support projections 15 from both sides thereof, the vertical piece 13 is prevented from falling. Further, in the case of the connecting fitting 1 of the illustrated example, the supporting projection 15
Is projected from the bent portion 14 and substantially coincides with the front surface of the vertical piece 13, so that the vertical piece 13 is aligned with the positioning reference line Y of the connecting fitting 1 drawn on the truss 2 as shown in FIG.
It is possible to easily and surely match the front surfaces of the connecting members, and the connecting fittings 1 welded to the adjacent trusses 2 can be easily arranged in a straight line. Further, the connecting fitting 1 in the illustrated example
In the corners of the bottom piece 12 and the vertical piece 13, that is, at both sides of the support projection 15 inside the bent portion 14, the bottom piece 1 is provided.
2 and the vertical piece 13 are reinforced by forming ribs 16, 16 so that the bending angle between the bottom piece 12 and the vertical piece 13 may be changed by the load of the fog 3 and the slate plate 4 connected by the connecting fitting 1. It is possible to prevent a change in the value.

The above-mentioned connecting fitting 1 is produced, for example, by the following procedure. First, a metal plate is used for the bottom piece 12 and the vertical piece 13.
Cut to length with and. Simultaneously with or after cutting the metal plate, bolt holes 11 are formed in the vertical piece 13 of the metal plate. The metal plate provided with the bolt holes 11 is bent and formed into a bottom piece 12 and a vertical piece 13 at substantially right angles, and at the same time, a groove 16 ′ is pressed from the outside of the bent portion 14 by pressing.
16 'to form ribs 16, 16 extending between the bottom piece 12 and the vertical piece 13 located inside the bent portion 14.
And the bottom piece 12 and the vertical piece 13 form an L-shaped connecting fitting 1. Further, by forming a concave hole 15 'from the inside to the outside of the bent portion 14 of the connecting fitting 1 configured in the L shape as described above, the bent portion 14 is formed.
A support protrusion 15 is provided on the outer side of the. As described above, the support projection 15 and the ribs 16 and 16 can be easily formed by pressing the support projection 15 and the ribs 16 and 16 from the side opposite to the portion where the projection is to be provided.

As described above, the connecting fitting 1 is fixed to the truss 2 by welding so that the bolt holes 11 provided in the connecting fitting 1 and the bolt holes 31 provided in the fog 3 are aligned and fixed. Although the bolt 5 is inserted, in this case, the bolt hole 31 of the fog 3 is pre-drilled at a predetermined position, but the truss 2 is constructed on the roof portion by combining various steel frame members. Therefore, the space between the adjacent trusses 2 may not always be the designed value. In such a case, if the connecting fitting 1 is uniformly welded to the truss 2, the connecting fittings 1 and 1 fixed to the adjacent trusses 2 and 2 are provided in the bolt holes 11 and the fog 3 respectively. Since the position of the bolt 3 is displaced and the mower 3 cannot be connected, the fixing position of the connecting fitting 1 to the truss 2 is set to the bolt hole 31 provided in the mower 3.
It is necessary to correct according to the position of. Therefore, in the present invention, a vertical line 17 is engraved on the outer surface of the vertical piece 13 of the connecting fitting 1 as a mark for positioning when the bolt hole 11 provided in the vertical piece 13 is used as a reference. There is. Then, when the connection fitting 1 is welded and fixed onto the truss 2,
As shown in FIG. 7, the actual distance D between the adjacent trusses 2 and 2 is measured by the position of the marking line or the like provided in advance on them, and the measured value D between the trusses 2 and 2 and the mister 3 are provided in advance. The distance d between the bolt holes 31, 31 is compared, and the difference between the bolt holes 31, 31 is moved to the left or right on the truss 2 by the distance (D−d). The space between the fittings 1 and 1 fixed to the
By making corrections according to Nos. 1 and 31, it is possible to easily position the connecting fitting 1 and reliably connect the fog 3 to the truss 2 via the connecting fitting 1.

In the above embodiment, the support projection 15
Shows the case where it is provided only at one place in the central portion of the bent portion 14, but when the width of the connecting fitting 1 becomes long, this supporting projection 15 can be provided at a plurality of places, and the rib 1
The number of 6 may be increased or decreased according to the width of the connecting fitting 1. Further, the positioning mark may be simply a dot rather than the vertical line 17 as in the embodiment.

Further, in the illustrated embodiment, only the case of constructing a roof has been described, but the body is connected to the pillar,
Even when a wall material is attached to this and a wall surface is constructed, by using this connecting fitting 1, positioning can be performed easily and the connecting work can be performed quickly, and the strength of the connecting fitting 1 is large and the connecting work can be performed. It does not deform due to the weight of the body or wall material.

[0018]

As described above, according to the connecting fitting according to the present invention, a very simple structure is provided in which the supporting protrusion is provided outside the bent portion of the connecting fitting which is formed into an L shape by the bottom piece and the vertical piece. Can prevent the metal fittings from falling over, and shortening the length of the bottom piece enables rationalization of material costs. Besides,
When providing the projecting part, the bent part of the bottom piece and the vertical piece
Form a concave hole by press molding from the inside to the outside
This allows the bent metal plate to face the outer surface side by the amount of the recessed hole.
Since it can be made to project once, the support protrusion is very simple.
It can simply be formed. Further, in the case where the positioning mark is provided, the position of the connecting fitting can be easily corrected according to the position of the connecting bolt hole previously formed in the connected steel frame or the like, and the connection in the steel frame structure can be achieved. The work of connecting the parts can be performed quickly.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing how a roof is constructed using a connecting fitting according to the present invention.

FIG. 2 is an enlarged vertical cross-sectional view of a main part of a connecting portion of the roof.

FIG. 3 is a perspective view of the connecting fitting viewed from the front side.

FIG. 4 is a perspective view of the connecting fitting viewed from the rear side.

FIG. 5 is a central longitudinal side view of the connecting fitting.

FIG. 6 is an enlarged side view of a bent portion of the connecting fitting.

FIG. 7 is an explanatory view showing a state of positioning the connecting fitting on the truss and the fog to be connected to the connecting fitting.

FIG. 8 is a perspective view showing an example of a conventional connecting fitting.

[Explanation of symbols]

 1 Connecting Metal Fitting 2 Truss 3 Moya 4 Slate Plate 5 Fixing Bolt 6 Nut 7 Hook Bolt 8 Washer 9 Nut 11 Bolt Hole 12 Bottom Piece 13 Vertical Piece 14 Bending Part 15 Supporting Protrusion 16 Rib 17 Vertical Wire

Claims (2)

[Scope of utility model registration request] 1. An L-shaped bent piece formed of a bottom piece and a vertical piece.
The connecting metal fitting on the extension of the bottom piece on the outer surface of the bent portion.
From the inner side to the outer side of the bent portion of the bottom piece and the vertical piece.
The outer surface of the bent part can be
A steel frame structure characterized in that a supporting protrusion is provided on the
Connection metal fittings. 2. Bolt holes are formed in the vertical piece, and
Provide a positioning mark based on the position of the bolt hole
In the steel frame structure according to claim 1, wherein
Connecting fitting.