JPH09279764A - Truss beam structure and wedge type fastening tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the working time by fastening two upper and lower chord members to be arranged with a space of a prescribed dimension to an I-type lattice having joint surfaces parallel to the chord members on both ends by a wedge type fastening tool. SOLUTION: A wedge type fastening tool 1 is formed of a channel 5 having an inner width slightly larger than the widths of band materials 2, 3, 4 to be fastened, a wedge insert hole 7 bored in lateral flanges 6 of the channel 5, and a wedge 10. An upper chord member 21, a lower chord member 22, and an I-type lattice 24 having joint surfaces parallel to the upper and lower chord members 21, 22 are provided, the joint surfaces of the lattice 24 are put on the upper and lower chord members 21, 22, and fastened by the wedge type fastening tool 1 to form a truss beam 20. Thus, the truss beam 20 can be extremely easily assembled and disassembled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple truss beam structure and a wedge type fastener suitable for the truss beam.

[0002]

2. Description of the Related Art FIG. 12 is a view showing a conventional bolt-fastened truss beam, and a truss beam 100 is a plurality of upper string materials 101, lower string materials 102, lattices 103 ... (...). The same shall apply hereinafter.), And the one in which the lattices 103 ... And the string materials 101, 102 are connected by the bolts 104 ... Is called a bolt fastening type truss beam. Of course, Lattice 1
There is a beam in which 03 ... is fixed to the string materials 101 and 102 by rivets or welding, but it cannot be disassembled and assembled, and therefore is not suitable for the framework of a temporary shed or a simple house.

[0003]

Although the above-mentioned bolt-fastened truss beam has a simple structure, it takes a long time to screw the nut into the nut, so that the working time becomes long and the tightening torque of the bolt is large. It has the drawback of being substantially difficult to manage. Therefore, an object of the present invention is to provide a truss beam structure and a wedge-shaped fastener suitable for the truss beam structure, in which the working time is short and the tightening confirmation is easy.

[0004]

In order to achieve the above object, the first aspect of the present invention is an I type having two string materials arranged with a certain size apart and joint surfaces parallel to the string material at both ends. A truss beam is composed of a lattice or a V-shaped lattice having both ends and a joint surface parallel to the string at the center and a wedge-type fastener for fastening the joint surface of the lattice and the string by a wedge action. We used to use a wedge type fastener instead of welding or bolts to stop the lattice.
Truss beams can be assembled and disassembled extremely easily, and the number of assembly steps can be reduced.

According to a second aspect of the present invention, a channel having an inner width slightly larger than the width of the band material to be fastened, a wedge insertion hole formed in the left and right flanges of the channel, and a wedge insertion hole formed in the channel are overlapped with each other. A wedge type fastener is constructed by pressing a plurality of strips against the web of the channel. The wedge type fastener is composed of two parts, a channel and a wedge, is simple and has a low workability, and thus can be manufactured at low cost.

According to a third aspect of the present invention, a through hole is provided at the tip of the wedge, and an auxiliary wedge for preventing the wedge from coming off is driven into the through hole. The wedge can be prevented from coming off, and safety can be further enhanced.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a wedge-type fastener according to the present invention. The wedge-type fastener 1 has a channel 5 having an inner width slightly larger than the width of the strips 2, 3 and 4 to be fastened.
And wedge insertion holes 7 and 7 formed in the left and right flanges 6 and 6 of the channel 5, and a plurality of band members 2, 3 and 4 which are punched into the wedge insertion holes 7 and 7 and are overlapped with each other. A wedge 10 that presses against the web 8 of the channel 5. Further, the wedge 10 has a through hole 11 at the tip. An auxiliary wedge 12 for preventing the wedge from coming off can be inserted into the through hole 11.

FIG. 2 is a view taken in the direction of arrow 2 in FIG.
Is the upper string material, the band material 3 is one end portion of the lattice, and the band material 4 is one end portion of another lattice. The channel 5 is covered over these, and the wedge 10 is driven into the wedge insertion hole 7 to form the wedge 10. The state where the auxiliary wedge 12 is driven in from above is shown.

A process for manufacturing a truss beam by skillfully utilizing the wedge-type fastener 1 having the above structure will be described below.
FIG. 3 is an exploded view of a truss beam according to the present invention. First, an upper string 21, a lower string 22, and the strings 21, 22 at both ends.
I-type lattice 2 with joint surfaces 23, 23 parallel to
4 and wedge-type fastener 1 ... are prepared. Then, as shown in the drawing, one joint surface 23, 23 of the lattice 24, 24 is overlaid on the upper string 21 (for convenience, three sheets are overlaid), and the wedge-shaped fastener 1 is fastened thereto. Similarly, the other joint surfaces 23, 23 of the lattices 24, 24 are overlaid on the lower string 22 (for convenience, three sheets are overlaid), and the wedge-shaped fastener 1 fastens them.

FIG. 4 is a completed view of the truss beam according to the present invention. The truss beam 20 is composed of two upper and lower stringers 21 and 22 arranged with a certain distance and an I-type lattice 24. , Wedge type fasteners 1 ... By which these lattices 24 ... And the stringers 21 and 22 are fastened by a wedge action.

FIG. 5 shows a truss beam according to the present invention (another embodiment).
FIG. 3 is an exploded view of the upper string 21, the lower string 22, and the joint surfaces 23 parallel to the strings 21, 22 at both ends and the center.
· V-shaped lattice 25 with ... And wedge-shaped fasteners 1, 1
Prepare A ... Then, as shown in the figure, the upper string 21
The joint surfaces 23, 23 at one end of the lattices 25, 25 are superposed on each other (conveniently three sheets are superposed), and the wedge-shaped fastener 1 is fastened thereto. On the other hand, the central joint surface 23 of the lattice 25 is overlaid on the lower string 22 (for convenience, two sheets are overlaid), and the wedge-shaped fastener 1A is fastened thereto. This wedge type fastener 1A
In FIG. 1, the distance between the web 8 and the wedge insertion hole 7 of the wedge type fastener 1 is shortened. Since one lattice 25 is comparable to two I-type lattices 24, 24, the lattice 2
The number of 5 can be halved. However, two types of wedge-type fasteners 1 and 1A must be prepared.

FIG. 6 is an exploded view of a truss beam (further another embodiment) according to the present invention, in which an upper string material 21, a lower string material 22 and
The strings 21 and 22 on both ends, and the strings 2 on both ends and the center
Inverted V-shaped lattices 26 with a joint surface 23 parallel to 1 and 22 and wedge type fasteners 1 and 1A are prepared. Then, as shown in the drawing, the central joint surface 23 of the lattice 26 is overlaid on the upper string 21 (for convenience, two sheets are overlaid), and they are fastened by the wedge-shaped fastener 1A. On the other hand, the lower string 22
The joint surfaces 23, 23 at one end of the lattice 26 are overlapped with each other (for convenience, three pieces are overlapped), and the wedge-shaped fastener 1 fastens them.

FIG. 7 is a sectional view of the greenhouse. It should be noted that although it is “vinyl” correctly, it is called “vinyl” for convenience. The greenhouse 30 includes the pillar beams 31 and 31 of the truss beam structure of the present invention, the arch beams 32 of the truss beam structure of the present invention, the arch pipe 33 attached via the pipe attachment fittings 40, and the arch pipe. And a resin sheet 34 fixed to 33.

FIG. 8 is an enlarged view of a main part of FIG.
The arch pipe 33 is attached to the arch beam 32 composed of 1, the lower string 22, the I-type lattice 24 ... And the wedge-type fastener 1 ... A form in which a resin sheet 34 is attached to the arch pipe 33 is shown.

FIG. 9 is an exploded perspective view of the pipe mounting metal fitting. The pipe mounting metal fitting 40 has no left and right walls, and a box metal fitting 42 having pipe accommodating notches 41, 41 in the upper portion.
And a channel 44 to be mounted so as to straddle the bottom 43 of the box metal fitting 42, and a flange 4 of the channel 44.
Wedge insertion holes 46, 46 opened in 5, 5 and a first wedge 47 for inserting into the wedge insertion holes 46, 46.
And a second wedge 48 that is in sliding contact with the upper surface of the bottom portion 43 of the box fitting 42.

FIG. 10 is a sectional view taken along line 10-10 of FIG. 8, in which the box metal fitting 42 is placed on the upper string 21 and then the bottom portion 4 is formed.
The channel 44 is attached so as to straddle 3 and the upper string 21 and the first wedge 47 is driven. With this, the box fitting 42 is attached to the upper string 21. Next, the heart-shaped pipe 50 is attached to the pipe housing notch 41 (this attachment procedure will be described separately), and the molding 5 is attached to the pipe 50.
The resin sheet 34 is fixed with 1 and the screw 52. The resin sheet 34 is a so-called thick transparent vinyl sheet.

FIGS. 11 (a) and 11 (b) are diagrams showing how to attach the heart-shaped pipe. The heart-shaped pipe 50 is a special-shaped pipe in which a concave portion 53 is partially formed, and when the pipe outer diameter is D1 and the distance to the bottom of the concave portion 53 is D2, D2 is sufficiently smaller than D1. . Therefore, in (a), the concave portion 53 is formed into the inlet projection 41 of the pipe housing notch 41.
It comes into contact with a and turns the pipe 50 as shown by the arrow.

Then, the pipe 50 is placed in the pipe accommodation notch 41 as shown in FIG. At this time, the concave portion 53 is turned upward. After this, the second wedge 4
8 (see FIG. 10), when the pipe 50 is pushed up as indicated by the arrow, the pipe 50 comes into contact with the inlet protrusions 41a and 41b, stops, and stabilizes in this state. No bolts or screws are needed to stop or secure the pipe 50. Also,
As shown in FIG. 10, since the molding 51 is attached to the flat concave portion 53, the molding 51 does not slip down. That is, since the heart-shaped pipe 50 is adopted, the pipe 50 can be easily attached to the pipe attachment fitting 40, and the resin sheet 34 can be easily attached to the pipe 50.

[0019]

The present invention has the following effects due to the above configuration. In order to achieve the above-mentioned object, the claim 1 is an I-type lattice provided with two string materials arranged with a certain size apart and joint surfaces parallel to the string material at both ends, or the string material at both ends and the center. A truss beam is composed of a V-shaped lattice having a joint surface parallel to the above, and a wedge-shaped fastener for fastening the joint surface of the lattice and the string by a wedge action. Conventionally, the lattice is stopped by welding or bolts, but it is stopped by a wedge type fastener, so that the truss beam can be assembled and disassembled extremely easily, and the number of assembling steps can be reduced. Further, since the wedge is used, it is extremely easy to visually check the fastening state, and the torque control unlike the conventional bolt structure is unnecessary.

The wedge-type fastener according to claim 2 is simple and has a low workability because it is composed of two parts, the channel and the wedge, and can be manufactured at low cost.

According to the third aspect, the wedge can be prevented from coming off, and the safety of the wedge type fastener can be further enhanced.

[Brief description of drawings]

FIG. 1 is a sectional view of a wedge-type fastener according to the present invention.

FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1;

FIG. 3 is an exploded view of a truss beam according to the present invention

FIG. 4 is a completed view of a truss beam according to the present invention.

FIG. 5 is an exploded view of a truss beam (another embodiment) according to the present invention.

FIG. 6 is an exploded view of a truss beam (further another embodiment) according to the present invention.

[Figure 7] Cross section of the greenhouse

8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is an exploded perspective view of a pipe fitting.

FIG. 10 is a sectional view taken along line 10-10 of FIG. 8;

[Fig. 11] Diagram of installation procedure of heart-shaped pipe

FIG. 12 is a diagram showing a conventional bolted truss beam.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wedge type fastener, 2, 3, 4 ... Band material, 5 ... Channel, 6 ... Channel flange, 7 ... Wedge insertion hole, 8
… Channel webs, 10… Wedges, 11… Through holes, 1
2 ... Auxiliary wedge, 20 ... Truss beam, 21 ... Upper string (string), 22 ... Lower string (string), 23 ... Joint surface, 2
4 ... I-type lattice, 25 ... V-type lattice, 26 ... Reverse V-type lattice.

Claims (3)

[Claims] 1. Two string materials arranged with a fixed size apart,
The I-type lattice having joint surfaces parallel to the string at both ends or the V-type lattice having joint surfaces parallel to the string at both ends and the center, and the joint surface of the lattice and the string by wedge action Truss beam structure consisting of wedge type fasteners for fastening. 2. A channel having an inner width slightly larger than the width of the band material to be fastened, a wedge insertion hole formed in the left and right flanges of the channel, and a wedge insertion hole formed in the wedge insertion hole.
A wedge-type fastener consisting of wedges that press multiple overlapping strips against the channel web. 3. The wedge-type fastener according to claim 2, wherein a through hole is provided at the tip of the wedge, and an auxiliary wedge for preventing the wedge from coming off is driven into the through hole.