JP3024060B2 - truss - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truss used for various structural materials and interior goods.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Patent Publication No. 5-54545, an upper lattice and a lower lattice composed of vertical and horizontal chords divided at intersections are provided between the intersections of the chords in both lattices. Trusses are known which consist of diagonals divided at each of the intersecting points of interconnection. In the conventional truss, at the joint between the lattice and the diagonal member, the vertical and horizontal chord members positioned in an intersecting state and the respective diagonal members positioned in an abutting state on the same surface are superimposed via a spacer. , These strings,
Washers are brought into contact with the upper and lower surfaces of the overlapping portion of the spacer and the diagonal member, and the connecting shaft is inserted into each of the washers, the string member, the spacers, and a plurality of connection holes passing through the respective diagonal members, and the center of the coupling portion. The washer and the chord material, the spacer, and the diagonal material are integrally fastened and fixed by inserting a fixing bolt into the fixing hole and tightening the nut.

[0003] Such a truss has a plurality of connection holes penetrating through the overlapping portion of the chord material, the spacer and the diagonal material, and the washers contacting the upper and lower surfaces of the overlapping portion. Since the shafts are connected by inserting them, when connecting and fixing the vertical and horizontal chords, diagonal members and spacers at the joints, or disassembling, the members are inserted through the connecting shafts in a certain order or It is necessary to pull out each member from the connecting shaft in the reverse fixed order. Therefore, there is no degree of freedom in the work of connecting and fixing and disassembling in the above-mentioned joint portion,
This can make the work complicated and difficult.For example, even when replacing some damaged chords or diagonals, it is necessary to disassemble the entire joint, and improvement in workability is desired. It is rare.

[0004]

SUMMARY OF THE INVENTION The technical problem of the present invention is to provide a joint between a truss chord and a slant as described above.
An object of the present invention is to further improve the workability of connecting and fixing or disassembling them. Another technical object of the present invention is to simplify and at the same time to simplify and reduce the number of parts used for connection at the intersection of a chord and a diagonal, and to simplify and reduce the production thereof.

[0005]

In order to solve the above-mentioned problems, a truss according to the present invention comprises an upper lattice and a lower lattice composed of vertical and horizontal chords divided at each intersection, and an intersection between the chords in both lattices. It is composed of diagonal material divided at each intersection connected to each other, and at the joining part of these chord materials and diagonal materials, the connecting parts are formed by flattening the ends of the vertical and horizontal chord materials and each diagonal material Then, the respective connecting portions are arranged in an abutting state on the same surface, and the connecting portions of the chord material and the diagonal material are superimposed via the spacer, and the upper and lower surfaces of the superposed portion of the chord material, the spacer and the diagonal material are overlapped. , Four connecting shafts corresponding to the connecting portions of the chords or diagonal members are brought into contact with washers, and the shafts are inserted into the through holes of the connecting portions of the respective materials, and the upper ends of the spacers are inserted. The chord and diagonal members are held in a fixed state by being fitted into the connection holes drilled on the lower surface. By inserting a fixing bolt into a fixing hole passing through the center of the washer on the upper and lower surfaces of the overlapping portion and tightening the nut, the chord, spacer, and diagonal member, and the washer are integrally fastened and fixed. It is characterized by having done.

Also, four connecting shafts corresponding to the connecting portions of the string and the diagonal members erected on the upper and lower surfaces of the spacer are penetrated through the connecting portions of the string and the diagonal members. Each of the strings, spacers, and polymers of the diagonal material are inserted into the holes, and a washer formed by forming a connection hole corresponding to the connection shaft rod on both upper and lower surfaces of the polymer is abutted. By inserting the rod, the chord material and the diagonal material can be held in a fixed state.

[0007] Further, the thickness of the spacer is suitably set to a thickness necessary for the axes of the chord members and the diagonal members to intersect at a point on the center line at the joint thereof.

In the truss according to the present invention having the above-described structure, four connecting shafts corresponding to the connecting portions of the chord members and the diagonal members are erected on both upper and lower surfaces of the upper and lower washers or spacers, and the spacers are provided. By drilling connection holes for fitting the shaft rods to the upper and lower surfaces or upper and lower washers, the connection of each chord material and diagonal material to the spacer can be performed in separate upper and lower steps, that is, In the washer or spacer of the above, the shaft rod is inserted into the through hole of the connecting portion of each material, and its tip is inserted into the connecting hole formed in the upper and lower surfaces of the spacer or the upper and lower washers, thereby forming the string member and the oblique. By holding each of the materials individually in a fixed state, and then inserting a fixing bolt into the fixing hole and tightening a nut, the overlapping portion and the washer can be easily and integrally fastened together,
Since it can be fixed, a degree of freedom can be given to the assembling work.

In particular, even in a state where the nut with respect to the fixing bolt is unscrewed, if the spacer and the washer which hold the chord material or the diagonal material are held in a temporarily fixed state by any means, the connection between each material and the spacer can be achieved. Even if some strings or diagonal materials need to be replaced due to damage, etc.
It is possible to easily replace each chord material or diagonal material by only removing the washer at the corresponding location, that is, with only minimal disassembly and disconnection.

The upper and lower washers are provided with four short connecting shafts or four connecting holes, so that the parts can be simplified and shared, and the spacers can be connected to the string connecting side if necessary. It can be constructed by forming the diagonal connection side with simple and common parts and connecting them to each other,
As a result, their manufacture can be simplified and reduced in cost.

Further, since the thickness of the spacer is set to a thickness necessary for the axis of the chord and the diagonal to intersect at a point on the center line at the joint thereof, the spacer acts on each chord and the diagonal. Since the axial acting force is concentrated at one point of the center line at the joint, no moment is generated at the joint, and the truss is not easily twisted or deformed based on this moment.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show the overall structure of an embodiment of a truss according to the present invention. This truss is composed of an upper lattice 1 composed of vertical and horizontal chords 3 and a lower part also composed of vertical and horizontal chords 7. Grating 5 and both gratings 1,5
And the diagonal members 9 interconnecting the intersection points of the string members 3 and the intersection points of the string members 7 in each other. Each of the chord members 3 and 7 and the diagonal member 9 has a length divided at each intersection point. And they are connected at each intersection by the method described in detail below.

FIG. 3 and FIG. 4 show an example of the structure of the joint between the chord member 3 and the diagonal member 9 of the upper lattice 1 (first embodiment).
The connecting portions 11 and 13 are formed by flattening the ends of the vertical and horizontal chord members 3 and the diagonal members 9 formed by pipes.
Through holes 15 and 17 are formed in the connecting portions 11 and 13, and arc-shaped notches 19 and 21 are formed at the center of the distal end portion to form a fixing hole at the center of the connecting portion.
Is cut out. And the connecting part 1 of each material 3, 9
The connecting portions 11 and 13 of the chord 3 and the diagonal member 9 are overlapped with a spacer 23 interposed therebetween.

The spacer 23 is in the form of a disk which abuts on each of the connecting portions 11 and 13 at the intersection of the chord 3 and the diagonal 9 so as to straddle them. Four connecting holes 25 and 26 corresponding to the through holes 15 and 17 of the material 3 or the oblique material 9 and the arc-shaped notches 19 and 21 respectively.
And one fixing hole 27 corresponding to the fixing hole formed by the above. The spacer 23 has four connection holes 25 equally arranged on the upper surface thereof, and the four connection holes 2 on the lower surface thereof are shifted in phase by 45 ° from the connection holes 25.
6, the spacer 23 is divided into two parts in the upper and lower middle portions, and is formed by two members of the same shape in which four connection holes are equally arranged. It is also possible to shift the phase of the connection holes by 45 ° by other means so that the connection holes cannot be rotated. With this configuration, the spacer 23 can be configured as an inexpensive one by using a common part whose shape is simplified.

The spacer 23 is interposed between the chord member 3 and the diagonal member 9, as shown in FIG.
The axes of the vertical and horizontal chords 3 and the diagonal members 9 are made to intersect at a point P on the center line at the joint, so that when an external force in the axial direction acts on each of these members, their acting force is reduced to the above point. Concentration on P prevents generation of a moment at the joint.

The chord 3, the spacer 23 and the diagonal 9
On the upper and lower surfaces of the overlapping portion, washers 31 and 33 having four connecting shaft rods 29 corresponding to the through holes 15 and 17 of the connecting portions 11 and 13 of the respective chord members 3 or the slant members 9 are provided. The shaft rod 29 is inserted into the through holes 15 and 17 of each material, and the tip of the shaft rod 29 is formed in the upper and lower surfaces of the spacer 23.
6 are held in a fixed state by fitting them into the center of the washers 31 and 33.
Further, fixing holes 35 and 37 corresponding to the fixing holes formed by the notches 19 and 21 of the diagonal member 9 are formed. And
The fixing holes 35, 37 and the notches 19,
The fixing bolt 39 is inserted into each fixing hole formed by the fixing member 21 and the fixing hole 27 of the spacer 23 so that the nut 41 is inserted.
By screwing them, these chords 3, spacers 23
And, the oblique member 9 and the washers 31, 33 are integrally fastened and fixed.

The truss having the above structure is composed of upper and lower washers 3.
1, 33, four connecting shaft rods 2 corresponding to the through holes 15, 17 in the connecting portions 11, 13 of the chord material 3 and the diagonal material 9;
9, and four connecting holes 25 and 26 for fitting the shaft rods 29 into the upper and lower surfaces of the spacer 23, respectively, so that each of the chord members 3 and the slant members 9 and the spacer 2 are formed.
3 can be performed in upper and lower separate steps, that is, in each of the washers 31 and 33 or the spacer 23, the shaft rod 29 is connected to the through hole 1 in the connection portion of each of the members 3 and 9.
5 and 17, and the leading ends of the strings are inserted into connection holes 25 and 26 formed in the upper and lower surfaces of the spacer 23 so that the chord members and the diagonal members are individually held in a fixed state. The fixing holes formed by the cutouts of the members 3 and 9 and the fixing holes 2 of the spacers 23 and washers 31 and 33
The string material 3 and the spacers 23 are inserted by inserting fixing bolts 39 through 7, 35 and 37 and screwing them with nuts 41.
Since the diagonal member 9 and the upper and lower washers 31 and 33 can be easily fastened and fixed integrally, the degree of freedom in the assembling work can be given.

In particular, the nut 1 for the fixing bolt 15
Even in the state in which the string member 6 is unscrewed, if the spacer 23 for holding the chord material 3 or the slant member 9 and the washers 31 and 33 are held in a temporarily fixed state by some means, the members 3, 9 and the spacer 23 In the case where a part of the chord material 3 or the diagonal material 9 needs to be replaced due to damage or the like, only one of the washers 31, 33 at the corresponding portion is removed, that is, the minimum disassembly, It is possible to easily exchange the chord members 3 or the slant members 9 only by releasing the connection.

Further, as shown in FIG. 3, the axial acting force acting on each of the chord members 3 and the diagonal members 9 is concentrated at a point P on the center line of the joint, so that a moment is generated at the joint. do not do. Therefore, it is difficult for the truss to be twisted or deformed due to the moment.

The structure of the joint between the lower lattice 5 and the diagonal member 9 is substantially the same as the structure of the joint between the upper lattice 1 and the diagonal member 9 except that the upper and lower parts are upside down. The description is omitted to avoid duplication. In the joints around the truss, the number of the chords 3 and the diagonal members 9 is smaller than that of the above-described intermediate joints, but the parts where the chords 3 and the diagonal members 9 are missing are connected to each other. By using an auxiliary spacer having the same shape and thickness as the portions 11 and 13, the connection can be performed in the same manner as described above.

FIGS. 5 and 6 show another configuration example (second embodiment) of the connecting portion. In this second embodiment, the spacer 73 has the same shape as the spacer portion divided into upper and lower parts. The case where 74 and 74 are joined and used is shown.
These spacer pieces 74 are respectively connected to four connecting shaft rods 79, on a rectangular seat plate 74 a that abuts on the connecting part 11 of each chord member 3 or the connecting part 13 of each diagonal member 9 so as to straddle it. 80
Are erected at equal intervals.
Are shifted from each other by 45 °, and the back surface is joined and integrated by welding, bonding, or other means to form the spacer 73. Therefore, the spacer 7
3 is a connecting portion 11 of the chord 3 and the diagonal 9 on the upper and lower surfaces,
Four connecting shaft rods 79 and 80 are provided upright at positions corresponding to the thirteen through holes 15 and 17, respectively. Then, by interposing the spacer 73 between the chord member 3 and the diagonal member 9, as shown in FIG. 5, the axes of the vertical and horizontal chord members 3 and the diagonal member 9 are aligned at one point P on the center line at the joint. They cross each other.

On the other hand, washers 81 and 83 which come into contact with the upper and lower surfaces of the overlapping portion of the chord 1, the spacer 73 and the diagonal 9 have connection holes corresponding to the shaft bars 79 and 80, respectively. The overlapping portion of the chord 3, the spacer 73, and the diagonal 9 is the spacer 7
4, four connecting shaft rods 79, 80 erected on the upper and lower surfaces, respectively.
Are inserted into through holes 15 and 17 formed in the connecting portions 11 and 13 of the string member 3 and the diagonal member 9 respectively, and the upper and lower surfaces of the overlapping portion correspond to the shaft rods 79 and 80 of the spacer 73. The washer 81, 83 formed by drilling four connection holes 75, 76, respectively, is fitted with shaft rods 79, 80 in the connection holes 75, 76 and fastened by bolts 39 and nuts 41. Each is held in a fixed state.

The other structure, operation, and effects of the truss of the second embodiment are substantially the same as those of the first embodiment. Therefore, the same or corresponding portions are denoted by the same reference characters and will not be described. Omitted.

In the first embodiment and the second embodiment, the upper and lower washers are provided with four short connecting shafts or four connecting holes to simplify the parts and to make them common. The spacers can be formed by forming the connecting side of the string member 3 and the connecting side of the diagonal member 9 with simple and common parts and connecting them to each other as necessary.
As a result, their manufacture can be simplified and reduced in cost.

[0025]

As described above, according to the truss of the present invention,
The workability of connecting and fixing or disassembling the string member and the oblique member can be further improved. More specifically, four connecting shafts corresponding to the connecting portions of the chords and the diagonal members are erected on the upper and lower surfaces of the upper and lower washers or the spacer, and the upper and lower surfaces of the spacer or the upper and lower washers are arranged on the upper and lower surfaces of the spacer. By drilling a connection hole for fitting the shaft rod, the connection of each chord and diagonal material to the spacer can be performed in upper and lower separate steps, that is, in each washer or spacer, Is inserted into the through hole of the connecting portion of each material, and the ends are fitted into the connecting holes formed in the upper and lower surfaces of the spacer or the upper and lower washers, thereby individually fixing the chord material and the diagonal material. Then, by inserting a fixing bolt into the fixing hole and tightening the nut, the overlapping portion and the washer can be easily fastened and fixed integrally, so that the degree of freedom in the assembly work is increased. Attached It can be.

In particular, even in a state where the nut with respect to the fixing bolt is unscrewed, if the spacer and the washer that hold the chord or diagonal material are temporarily held by some means, the connection between each material and the spacer can be maintained. Even if some strings or diagonal materials need to be replaced due to damage, etc.
It is possible to easily replace each chord material or diagonal material by only removing the washer at the corresponding location, that is, with only minimal disassembly and disconnection.

[Brief description of the drawings]

FIG. 1 is a plan view showing the overall configuration of a truss according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged sectional view of a main part of the truss according to the first embodiment of the present invention.

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is an enlarged sectional view of a main part of a truss according to a second embodiment of the present invention.

FIG. 6 is an exploded perspective view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper lattice 3,7 Chord material 5 Lower lattice 9 Diagonal material 11,13 Connection part 15,17 Through hole 19,21 Notch 23,73 Spacer 25,26,75 Connection hole 27 Fixing hole 29,79,80 Connection shaft Rod 31, 33, 81, 83 Washer 39 Fixing bolt 41 Nut

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 1/19 E04B 1/58

Claims (3)

(57) [Claims] An upper grid and a lower grid made of vertical and horizontal chords divided at each intersection, and a diagonal piece divided at each intersection connecting the intersections of the chords in both lattices. At the joints between these chords and the diagonal, the ends of the vertical and horizontal chords and each diagonal are flattened to form connecting parts, and the respective connecting parts are arranged on the same plane in an abutting state. Then, the connecting portion of the string member and the diagonal material is overlapped via the spacer, and four connecting portions corresponding to the connecting portion of the string member or the diagonal material are provided on both upper and lower surfaces of the overlapping portion of the string material, the spacer and the diagonal material. By contacting a washer formed by erecting a shaft rod, inserting the shaft rod into a through hole of a connecting portion of each material, and fitting the shaft member into a connecting hole formed on the upper and lower surfaces of the spacer, thereby obtaining a chord material and Each of the diagonal members is held in a fixed state, and penetrates through the center of the washer on the above-mentioned overlapping portion and both upper and lower surfaces thereof By nut tightened by inserting the fixing bolt to the fixing hole, their chords, and the spacer and diagonal members, fastening a washer integrally fixed, trusses, characterized in that. 2. An upper grid and a lower grid made of vertical and horizontal chords divided at each intersection, and a diagonal material divided at each intersection connecting the intersections of the chords in both lattices. At the joints between these chords and the diagonal, the ends of the vertical and horizontal chords and each diagonal are flattened to form connecting parts, and the respective connecting parts are arranged on the same plane in an abutting state. Then, the connecting portions of the string members and the oblique members are superimposed via spacers, and four connecting shafts corresponding to the connecting portions of the string members and the oblique members provided on the upper and lower surfaces of the spacer are connected to the strings. In addition to being inserted into the through holes formed in the connecting portion of the material and the diagonal material, connecting holes corresponding to the shaft rods are formed in the upper and lower surfaces of the overlapping portion of the chord material, the spacer and the diagonal material. A chord and a diagonal are fixed to each other by fitting a washer By inserting a fixing bolt into a fixing hole passing through the center of the washer on the upper and lower surfaces of the overlapping portion and tightening the nut, the chord, spacer, diagonal member and the washer are integrally fastened. A truss characterized by being worn and fixed. 3. The truss according to claim 1, wherein the thickness of the spacer is a thickness necessary for the axis of the chord and the diagonal to intersect at a point on the center line at the joint thereof. A truss characterized by: