JPS5980806A - Assembling type enclosure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prefabricated frame with high structural strength obtained by pin-coupling units made of two types of members.

Among conventional structures, the Bailey Bridge shown in Figure 1 is an example of a bridge that has a relatively simple structure and is suitable for use as a temporary bridge in the event of a bridge being washed away or damaged in the event of a disaster. There is a prefabricated bridge A.

This prefabricated bridge A is made of channel steel, and horizontal upper chord members 1 and lower chord members 2 are connected by vertical members 3, 3 made of angle steel.
and a gusset plate 4.4.5.5 is welded to the longitudinal center of each longitudinal member 3, 3, while the gusset plate 4 of the upper chord member 1 and the gusset plate of the left and right longitudinal members 3.3 are welded. 5.
5 are connected by welding the diagonal members 6, 6, and further, the gusset plate 4 of the lower chord member 2 and the gusset plates 5, 5 of the left and right longitudinal members 3, 3 are welded to the diagonal members 7, 7. This is a structure in which a required number of unit members 8 connected together are sequentially controlled on the upper chord and each end of the lower chord member 2 is connected with a pin.

However, the frame having the above-mentioned structure has the following problems.

(1) The unit members are relatively heavy, making it inconvenient to transport and assemble them manually in an emergency.

(2) Although it is designed as a truss, secondary stress actually occurs, resulting in an inconvenient 75 bead that does not match the design.

(3) The relatively large size of the l unit causes inconvenience in handling.

(4) Since the structural members such as the upper chord member, lower chord member, longitudinal member, and diagonal member are made of section steel, the torsion rigidity is mechanically low.

(5) Since the surface area is large, the cost of repairs such as painting increases.

From the above-mentioned viewpoints, this invention has a structure that is extremely simple and lightweight, has high rigidity and does not generate secondary stress, and is highly safe. It provides a prefabricated frame that is available and highly economical, and consists of diagonal members made by bending a single small-diameter steel pipe at a predetermined angle in the center of its length to form a V-shape, and this Gazette plates = 1 are welded to both ends and the central curved part of the diagonal member, respectively, and arranged on the same plane, and upper chord members made of large diameter steel pipes are welded at both ends to the gusset plates at both ends of the diagonal member. and a steel pipe bar member for pin connection which can freely connect the gusset plates of the curved part of the diagonal member in the adjacent triangular member, which are connected by pin-joining the gazette plates at both ends of the diagonal member. The device is characterized in that a required number of sets of unit members can be assembled.

Next, the structure of the present invention will be explained by way of embodiments with reference to the drawings.

FIG. 2 shows a front view of a temporary bridge B as an embodiment of the frame of the present invention. As shown in the drawings, the temporary bridge B of this embodiment has a unit part 11 made up of a triangular member 9 and a bar member 10, and a required number of sets of unit members 11 are connected by pins. This is an example.

As shown in the enlarged front view in Figure 3, a single small diameter steel pipe is bent at a predetermined angle, for example 90°, at the center of its length to form a V-shape. the diagonal member 12, the gazette plates 13, 13 welded to both ends of the diagonal member 12, the gazette plate (14) disposed on the same plane with these gazette plates and welded to the curved portion 12A at the center of the diagonal member; Tsuto plate 1
It consists of a large-diameter steel pipe upper chord member 15 with both ends welded to the 3° 13. In addition, the curved portion 12A is made as far as possible.
Make a gentle curve.

A rod member l that constitutes the triangular member 9 and the unit member 11
O is made of a needle tube with a large diameter, both ends are formed flat, and pin holes 16 and 16 are bored.

The gusset plate 13 has a bottle hole 17 at a predetermined position near the outer end, and the gusset plate 14 has a curved portion 1.
Bottle holes 18 are bored at predetermined positions facing both outsides of 2A.

Temporary bridge B using the triangular members 9 and bars 10 is assembled by adding bars 10 to a required number of unit members 11 as needed.

In the case of temporary bridge B shown in Fig. 2, four sets of unit members 1
1 and 1 bar 10, and furthermore, 1 bar each at both ends.
Although the book diagonals 19, 19 are added, these additional members are merely an additional benefit for forming the end portion due to the shape of the frame.

The structure of the temporary bridge B, which is an example of the structure of the present invention, is such that the triangular members 9 are arranged in a direction in which the upper chord members 15 are arranged in series.
Gazette play) 13 and overlapped bottle hole 1
Insert the bolt into 7 and tighten the nut to make it one piece.
Connection by rivets may also be used.

Next, insert the via hole 16 of the bar 10 into the via hole 18.18 of the gazette plate 14.14 in the adjacent triangular members 9,9.
are stacked on top of each other, and the rods 10 are pin-coupled with bolts, nuts, or rivets.

As described above, the frame of the present invention has an extremely simple structure, so the unit members can be easily manufactured in a factory, and the frame is lightweight, making it easy to handle during transportation, assembly, and disassembly.

In addition, the pipe structure has high rigidity, and although there are no protruding parts, there is little damage at bent parts.Furthermore, the mechanically stable unit structure, which is made of triangular members and rods, is combined with a bottle, so secondary stress is not generated. It has many excellent industrial effects, such as being able to assemble long-span temporary bridges, requiring less painting area, being economical, and being widely applicable to temporary scaffolding, frames of temporary buildings, etc.

[Brief explanation of the drawing]

Figure 1 is a front view of the Bailey Bridge as a conventional structure, Figure 2
The figure is a front view of a temporary bridge as an example of the frame of this invention.
The figure is an enlarged front view of the triangular member, and FIG. 4 is a front view of the bar. In the drawings, B... Temporary bridge 9 as an example of the frame of the present invention... Triangular member 10... Bar material 11.
・Unit member 12... Diagonal member 12A... Curved portions 13, 14... Gazette plate

Claims (1)

[Claims] A single narrow diameter steel pipe is bent at a predetermined angle at the center of its length to form a diagonal member, and welded to both ends and the curved part in the center of this diagonal member, arranged on the same plane. A triangular member consisting of a large-diameter steel pipe upper chord whose both ends are welded to the gusset plates at both ends of the diagonal member, and the gusset plates at both ends of the diagonal member are connected by pins. An assembly characterized in that a 1 m long unit member is made of a steel pipe bar member for connecting the bins and the gazette plate of the diagonal curved portion of the adjacent triangular member is assembled, and a required number of sets of this unit member are assembled. Type frame.