JP2007315539A - X-shaped joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-shaped joint capable of finely adjusting an X-shaped intersection angle of arch members, and increasing rigidity of arch member frame of a plain building by strongly resisting against change of the intersection angle of the arch members. <P>SOLUTION: In the X-shaped joint, two steel plates of a same shape including a groove receiving part inclined by a predetermined angles to a short side direction of a strip steel plate are piled with making the groove receiving parts opposite each other, and both end parts thereof are fixed by a fixture. A round hole is formed on one end part of one of the two steel plate and an elongated hole along an arc having a center on the round hole is formed on another end part. Round holes are formed on positions corresponding to the round hole and the elongated hole on both end parts of another of the two steel plates. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a frame structure of a simple building such as a greenhouse, a cherry house, a livestock barn, an insect repellent house for outdoor vegetables, in particular, a frame unit in which a plurality of curved members are joined together in a plan view X-shape by a purlin joint. Structure of X-shaped joint for joining the arch materials where the curved members of the adjacent frame units of the arch material composed of a plurality of units with one unit intersecting in the X shape between the ridge wood and the girder It is about.

The inventor separately uses the total amount of the carbon steel pipe material that has been used as the framework of a simple building in the past by making the framework structure of the simple building a very unique structure for the framework structure of the simple building. In order to provide a high-strength simplified building framework structure, the construction cost can be greatly reduced by eliminating the foundation work itself and simplifying the assembly work. An arch material composed of a plurality of units each including a frame unit in which a curved member of a book is joined in a plan view X-shaped front arch shape by a purlin joint, and the arch at the top of the arch material by the purlin joint In the framework structure of a simple building comprising a ridge wood joined to a material and a girder joined to the arch material at the shoulder of the arch material by a shoulder joint And the said arch material proposes the framework structure of the simple building arrange | positioned so that the said curved members of the said adjacent frame unit may cross | intersect X shape between the said ridge wood and the said beam material. It is a person.
Japanese Patent Application No. 2006-147473

Conventionally, as a joint for joining the above-mentioned X-shaped crossing arch material, as shown in FIG. 7, a flange portion having a locking groove in the center and having through holes on both sides is continuously formed. In the brace connecting band for attaching and fixing the two band brackets facing each other, the locking groove of one band metal fitting is a thick locking groove for accommodating the column, and the locking groove of the other band metal fitting is Two arc-shaped elongated holes having a center on a line that is inclined at 30 degrees with respect to the line connecting the through holes are symmetrically formed on the flange portions on both sides to accommodate the braces. A band for connecting a brace of a greenhouse has been proposed which is formed and can be finely adjusted when the brace is coupled to a support column at a set angle by a stopper penetrating the through hole and the long hole.
Further, as the X-shaped joint, arc-shaped elongated holes 12 and 22 are provided on the same circumference and symmetrical positions of the groove-like receiving portions 11 and 21 extending in the diameter direction through the center as shown in FIG. It consists of two mounting members 1 and 2 having substantially the same structure consisting of flat mounting bodies 10 and 20, and the depth of the groove-like receiving portions 11 and 12 is slightly smaller than the diameter of the rod-shaped object that is not fixed. And two rod-like objects comprising U-shaped bolts 3 and 4 and nuts for fastening the bolts to prevent relative fixation of the two in a state where they are joined to each other. And fixing devices have been proposed.
Japanese Utility Model Publication No. 06-043525 Japanese Utility Model Publication No. 53-004011

In the X-joint of the present invention, the crossing angle of the X-shaped crossing portions of the arch members to be joined slightly changes at each crossing portion.
In addition, when the arch material assembled by the joint is overloaded, a large force is applied to change the crossing angle of the X-shaped intersection, either large or small, but the X-shaped joint resists this large force. It is necessary to prevent the deformation of the arch material and ensure the rigidity of the simple building.
In both the X-shaped joints of the inventions described in Patent Document 1 and Patent Document 2, at least one band metal fitting is provided with a long hole centered on the virtual rotation axis of the X-shaped joint at both ends. Therefore, although the crossing angle can be finely adjusted, the virtual pivot axis of the X-shaped joint coincides with the central axis of the X-shaped crossing part of the arch material. The change in the crossing angle of the arch material when excessive weight is applied is countered only by the frictional resistance of the band fitting.
For this reason, in the conventional X-shaped joint, when the arch material is overloaded, the crossing angle of the arch material changes relatively easily, and thus the rigidity of the arch material framework of the simple building cannot be increased.

  In view of the above circumstances, the present invention aims to overcome the disadvantages of the prior art, and can finely adjust the X-shaped crossing angle of the arch material, and also when the arch material is overloaded. An object of the present invention is to provide an X-shaped joint that can strongly resist the change in the crossing angle of the arch material and can increase the rigidity of the arch material frame of the simple building.

  According to the first aspect of the present invention, two steel plates having the same shape and having a groove-shaped receiving portion inclined at a predetermined angle with respect to the short direction of the strip-shaped steel plate are polymerized with the groove-shaped receiving portions facing each other. The two ends are X-shaped joints fixed by a fixture, and one of the two steel plates has a circular hole at one end and the other end has the circular hole as a center. A long hole is formed along a circular arc, and the other end of the two steel plates is formed with a circular hole at a position corresponding to the circular hole and the long hole. It is characterized by having a joint.

  The X-shaped joint according to the present invention is provided with only one elongated hole along an arc centered on a circular hole provided at one end in two steel plates, and a virtual rotation axis of the joint and a virtual arch material are provided. By shifting the position of the pivot axis, it is possible to finely adjust the X-shaped crossing angle of the arch material, and it is powerful against changes in the crossing angle of the arch material when the arch material is overloaded It is possible to provide an X-shaped joint capable of resisting and enhancing the rigidity of the arch material frame of the simple building.

  FIG. 1 is a perspective view of an embodiment of a framework structure of a simple building, FIG. 2 is a side view thereof, and FIG. 3 is a diagram showing a framework unit of the framework of the simple building. FIG. 4 is a drawing showing a three-layer cross pipe joint that joins the ridge wood and the arch material, FIG. 5 is a diagram showing an X-shaped joint that joins the arch materials according to the present invention in an X shape, and FIG. It is a figure which shows the cross joint which joins the arch material slightly inclined from the horizontal girder material and perpendicular | vertical. 7 and 8 are diagrams showing conventional X-shaped joints.

With reference to FIG. 1 thru | or FIG. 6, the Example of the frame structure of a simple building is demonstrated in detail.
1 represents a framework structure of a simple building composed of a general structural carbon steel pipe. Usually, this framework includes a vinyl-based, polyolefin-based, fluorine-based film, sheet, insect repellent net or other coating material. Covered and used as simple buildings such as greenhouses, cherries, livestock houses, insect-proof houses for outdoor vegetables, and warehouses.

  Reference numeral 2 denotes an inverted U-shaped end arch member in which two curved steel pipes 2a and 2b, which are curved members having a symmetrical shape in front view, are joined by a known joint. It is arranged in the direction between the beams. In this embodiment, two end arch members 2 are installed at both ends of the building at predetermined intervals to form end arch members. However, the number of the end arch members may be one or three. Good.

3 is a skeleton unit joined by a three-layer cross pipe joint 11 in the purlin shown in FIG. 4 so as to have an X shape in plan view and an arch shape in front view as shown in FIG.
The three-layer cross pipe joint 11 in the purlin part is connected to a purlin fixing part 12 fixed to the purlin wood 5 in the upper stage and a fixing tool 15 such as a bolt below the purlin fixing part. One end of the steel pipe is inserted and fixed from the opening, and is formed of an X-shaped connecting pipe 16 that is three-dimensionally cross-joined.
The purlin fixing portion 12 is composed of a semicircular curved plate 13 fixed to the purlin 5, and an attachment plate 14 that is rotatably integrated by an X-shaped connecting pipe 16 and a fixture 15. It is formed by bending.
The semicircular curved plate 13 has an inverted U-shape when viewed from the front, and a groove 131 is formed by bending inward and upward at the lower end of the side plate. The bottom surface of the groove is lowered toward the front side in FIG. 5, and so-called wedges are formed by a tapered groove. An engagement recess 132 is formed in the groove 131 to engage a projection 143 of a leg 142 of the mounting plate 14 to be described later.
The mounting plate 14 is a U-shaped plate member having legs 142 extending downward at both ends of the flat plate, and a protrusion 143 that engages with the engaging recess 132 is provided at the center of the leg. An accommodation portion 141 for accommodating the purlin 5 is recessed along the longitudinal direction of the mounting plate 14, and the top of the fixture 15 is flush with the bottom surface of the accommodation portion 141 at the center thereof.
The X-shaped connecting pipe 16 has two connecting pipes 17 and 18 overlapped in an X shape and intersects three-dimensionally, and is integrated with the mounting plate 14 by a fixture 15 such as a bolt or a nut. .

The skeleton unit 3 has the same height as the above-described steel pipe pipes 2a and 2b for the end arch material, and has a slightly wider width when viewed from the front. The ends of four curved steel pipe pipes 3a, 3b, 3c and 3d, which are the same as the shape of the steel pipe pipe and are symmetrical in front view, are inserted and fixed in the above-mentioned X-shaped connecting pipe 16 and assembled in a cross shape. ing.
At this time, since the attachment plate 14 is fixed to the X-shaped connecting pipe 16, the leg 141 of the attachment plate 14 is brought into contact with the groove 134 of the semicircular curved plate 13 with the purlin 5 sandwiched therebetween, and the semicircular curved The board 13 is slid along the purlin 5 to join the purlin 5 and the frame unit 3 together.
The skeleton unit 3 assembled in this way has an X shape when viewed in plan and an arch shape when viewed from the front.
In this embodiment, the skeleton unit 3 is constituted by four curved steel pipe pipes 3a, 3b, 3c and 3d. However, the present invention is not limited to this embodiment. You may join in the state which crossed three-dimensionally by the X character joint different from a thing.

As shown in FIG. 1, reference numeral 4 denotes a tie bar which is attached to every other X-shaped frame unit 3 which is continuously installed. This tie bar connects the bending members 3 a and 3 d located on the right side of the frame unit 3 in plan view.
Note that the tie bar 4 may be attached to all the skeleton units 3. It is also possible to attach to the left side or both sides of the skeleton unit 3. In short, it may be determined in consideration of regional characteristics such as wind strength and snowfall.
Reference numeral 5 denotes the end arch material and a purlin joined to the top of the arch material, and reference numerals 6 and 7 denote a girder and skirt material joined to the shoulder portions and the lower end portions of the column portions of the arch materials.

Hereinafter, specific installation examples of the above-described end arch material, arch material, building material, girder material, and skirt material will be described.
End arch members 2a with a height of 6m and a column height of 2m from the ground surface to the girders, one at each end of the building in the ridge direction, and another one at an interval of 0.45-0.55m inside It is built, and the column part lower end part is inserted in the soil and is erected to constitute the end arch material 2.
In the middle, a plurality of skeleton units 3 are continuously built with a span of 0.8 to 0.9 m, but as shown in FIG. 1, adjacent skeleton units 3, such as those shown in FIG. The curved members 3a, 3c, 3d, and 3b of 3 and 1 of 3 are arranged so as to overlap with each other by the X-shaped joint 21 between the ridge wood 5 and the girders 6, The lower ends of the pillars of every other frame unit 3, for example, 3 of 1 and 3 of 3 curved members, are arranged so as to be substantially close to each other, and the lower ends thereof are inserted into the soil.

The X-shaped joint 21 will be described with reference to FIG.
FIG. 5B is a plan view in which the pipes 3a and 3c are mounted.
The X-shaped joint 21 is formed by bending a strip-shaped steel plate, and has two identical shapes having a groove-shaped receiving portion 23 inclined by 20 ° which is a predetermined angle with respect to the lateral direction. The steel plates 22 and 22 are superposed with the groove-like receiving portions 23 and 23 facing each other, and are fixed by a fixing tool such as a bolt or a wing nut (not shown).
A circular hole 24 is formed at one end of one of the two steel plates, and a long hole 26 is formed at the other end along an arc centered on the circular hole 24.
And the circular holes 25 and 27 are each drilled in the position corresponding to the said circular hole 24 and the said long hole 26 at the both ends of the other steel plate 22 of the said 2 steel plates.
The circular hole 27 is set to be positioned at the center of the long hole 26 when the steel pipes 3a and 3c intersect at an angle of 40 degrees.
Since one steel plate 22 can be rotated about ± 5 degrees around a fixing tool such as a bolt passing through the circular holes 24 and 25 with respect to the other steel plate 22, the crossing angle between the steel pipes 3a and 3c is slightly changed. Even so, fine adjustment is possible by rotating the steel plates 22 relative to each other.

Next, the cross joint 31 at the shoulder will be described with reference to FIG.
6A is a front view, FIG. 6B is a plan view, and FIG. 6C is a side view.
The cross joint 31 at the shoulder is a joint which joins the arch member 6 or the base member 7 and the arch member in a cross shape in which the arch member is slightly inclined at the shoulder and the skirt of the arch members 2 and 3. is there. Since the cross joint at the shoulder and the joint at the skirt have the same structure, the cross joint at the shoulder will be described below.
The cruciform joint 31 is formed by bending a strip-shaped steel plate, and includes a semicircular curved plate 32 that accommodates the beam member 6 or the skirt member 7 extending in the horizontal direction, and an opening formed in the side plate 35 thereof. The U-shaped engagement piece 34 that is inserted into the portion 33 and accommodates the arch material 2 or the end arch material, and the inwardly bent piece 37 formed at the lower end of the side plate of the semicircular curved plate 32 and the gap between the steel pipes And a wedge piece 38 to be driven.
The width of the opening 33 formed in the semicircular curved plate 32 is larger than the width of the U-shaped engagement piece 34, and the edge of the U-shaped engagement piece 34 is located at the upper edge of the opening 33. The engagement recess 39 is engraved so as to be rotated within a range of ± 10 degrees with respect to the orthogonal direction and receive at an arbitrary angle.
Further, an arcuate recess 40 for receiving the beam member 6 (7) is provided at the upper edge of the U-shaped engagement piece 34.
The girder 6 and the skirt member 7 are fixed to the arch members 2 and 3 by the skirt joint having the same structure as the shoulder joint 31.

As is clear from the above description, according to the framework structure of the simple building of this embodiment, in the ridge portion, four steel pipe pipes are integrated by the X-shaped connecting pipe 16 to constitute the framework unit 3. The skeleton unit 3 is fixed to the purlin 5 with the semicircular curved plate 13 and the mounting plate 14, and the arch members of the adjacent skeleton units are joined to each other at the intermediate portion between the purlin 5 and the girder 6 with the X-shaped joint 21. The arch members of the frame units 3 that are adjacent to each other in the shoulder portion are brought close to each other and joined to the beam member 6 to constitute the roof surface.
Between the purlin 5 and the girder 6 on the roof surface, a truss having the purlin 5 as the upper chord material and the girder 6 as the lower chord material is doubled to construct a frame with excellent strength. be able to.

It is a perspective view of the framework structure of a simple building. It is a side view of the framework structure of a simple building. It is a perspective view of the skeleton unit of 1 unit of a skeleton structure. It is drawing which shows a three-layer cross pipe joint. It is a figure which shows the X-shaped joint which joins the arch materials which concern on this invention in X shape. It is a figure which shows the cross joint which joins the arch material slightly inclined from the horizontal girder material and perpendicular | vertical. It is a figure which shows the X-shaped joint of the prior art example 1. FIG. It is a figure which shows the X-shaped joint of the prior art example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame structure of a simple building 2 End arch material 3 Arch material 4 Tie bar 5 Building wood 6 Girder material 7 Hem material 9 Valley fence 11 Three-layer cross pipe joint 12 Purlin fixing part 15 Fixture 16 X-shaped connection pipe 21 X-shaped joint 22 Steel plate 23 Steel plate 31 Cross joint 32 Semi-circular curved plate 34 U-shaped engagement piece 38 Wedge piece

Claims (1)

Two steel plates having the same shape and having a groove-shaped receiving portion inclined at a predetermined angle with respect to the short direction of the strip-shaped steel plate are polymerized with the groove-shaped receiving portions facing each other. X-shaped joint fixed at
A circular hole is formed at one end of one of the two steel plates, and a long hole along the arc centered on the circular hole is formed at the other end. An X-shaped joint in which circular holes are formed at positions corresponding to the circular holes and the elongated holes at both ends of the other.

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