JPH033731Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention relates to the structure of a tent used to cover construction sites to protect building materials and workers from rain and strong sunlight. be.

(Prior Art) Various types of simple tents have been devised to cover construction sites for the purpose of protecting construction members and workers from rain during the rainy season and strong sunlight in summer.

For example, there is a structure like the one shown in Figure 10, in which pillars are built at the four corners and sheets are hung;
−186301, there is a tent frame structure idea,
Furthermore, a tent device was devised as Utility Model Application No. 59-186304.

(Problem to be solved by the invention) However, in a tent with the structure shown in Figure 10, the central part of the sheet sags considerably, and if the seat is not installed at a sufficiently high position, the tent will sag under the sheet. It was impossible to carry out the work, and there were also drawbacks such as the sheet flapping greatly in the wind, and the sheet being damaged by the slightest breeze.

In addition, if a truss structure that can withstand the weight of the frame and the weight of the seats, as devised by Jitsuma 186301, is estimated to be quite heavy as a whole, it will take a crane to construct a temporary roof. It is expected that the government will have no choice but to rely on

Furthermore, if the frame was designed to withstand wind pressure, as proposed in Utility Model Application No. 59-186304, there were problems such as not only the wind pressure on the frame but also the need to make the foundation of the frame strong. . Both of the above-mentioned previously applied designs also had the drawback that the size of the building in the girth direction could not be changed.

As mentioned above, in the conventional technology of this type of tent, whenever a temporary roof is formed, the frame and foundation must be made to be fairly strong if the structure is to withstand wind and rain. Although it was a temporary construction project, it required the same amount of expense and effort as permanent construction, and was extremely unrealistic. On the other hand, the conventional technology has various drawbacks, such as the fact that when a lightweight roof surface is formed, the sheet and frame are damaged by wind loads.

This idea was devised to eliminate the above-mentioned conventional drawbacks, and aims to minimize the influence of wind loads and provide a tent structure that can withstand large loads despite being lightweight. shall be.

(Means for solving the problem) The configuration that is the gist of this idea is to establish multiple pillars around the periphery of the site where construction is planned, and frame members are straddled diagonally between the pillars and intersect in the middle. The frame material is curved in an upwardly convex shape, and a string is stretched between the ends of the frame material and surrounds the sheet, while an elastic string is provided around the sheet. The strings are tied to the strings stretched between the frame members, and a sheet is stretched over the frame members to form a roof surface.

(Example) The following will explain based on the illustrated example. 1 in the diagram
1 shows a rod-shaped frame material on which a sheet is to be stretched. This frame material 1 is a steel pipe for scaffolding, and two frames 1 and 1 of the same length are attached to the site where the construction is planned. The frame members 1, 1 are arranged so as to cross each other at the central part in the length direction and form diagonal lines,
In addition, each is curved in an upwardly convex shape with the center portion being the highest, and is formed in a so-called arch shape. In this case, the degree of curvature of the frame members 1, 1 is not very large (for example, when the length of the frame member 1 is about 16 m, the height difference between the ends and the center of the arch is about 1 m).

Both ends of the frame members 1, 1 are attached via a base board 3 to pillars 2 erected from the ground at the four corners of the periphery of the planned construction site, and the frame members 1, 1 are installed between the pillars 2, 2, respectively. It is arranged at a required height position so as to straddle it. The pillars 2 are made of scaffolding steel pipes like the frame members 1, and the pillars 2 and the frame members 1 are joined via clamps 4. Further, a reinforcing support member 5 is installed obliquely from the lower end of the column 2 to the middle part of the frame member 1, and this support member 5 is joined to each of the frame member 1 and the column 2 via a clamp 4. There is. If the sizes of the gable and girder surfaces vary depending on the shape of the building, this can be accommodated by changing the angle at which the frame members 1 and 1 intersect, as shown in FIGS. 3A and 3B. Furthermore, a strong string such as a wire 6 is stretched between the ends of the frame members 1 and 1 so as to surround the four peripheries. This wire 6 is the frame material 1
It is stretched in a fixed state with a clamp 4 attached at a position slightly in the middle direction from the joint part with the pillar 2.

A rectangular sheet is stretched over the frame members 1, 1. This sheet consists of two layers, upper and lower, the lower layer being a mesh sheet 7 and the upper layer being a lightweight waterproof sheet 8, each of which is stretched separately. Each of the mesh sheet 7 and the waterproof sheet 8 has eyelets 9 attached at regular intervals around its four peripheries, and a cord having sufficient elasticity, such as a rubber cord 10, is attached through the eyelets 9. . The mesh sheet 7 is arranged so that its corner portions face the pillars 2, and is stretched by binding rubber strings 10 to wires 6 to form a roof surface. Similarly, the waterproof sheet 8 is stretched by binding the upper rubber strings 10 of the mesh sheet 7 to the wires 6 to form a roof surface. As for the sheet, except on rainy days, only the lower layer mesh sheet 7 is usually stretched for sun protection, and is designed to be able to withstand strong winds. The upper layer waterproof sheet 8 is stretched to further cover the mesh sheet 7 in case of rain. Since this waterproof sheet 8 is frequently attached and detached, two ropes 11 are attached to each of the two opposite edges in advance to make it easier to handle, and the rope 11 attached to one edge is made longer than the other for waterproofing. It is preferable to have a configuration in which the other side edge of the sheet 8 is left hanging down from the folded side edge part along the back surface of the sheet 8, and the rope 12 attached to the other side edge is left hanging down as it is (FIG. 4).

In addition, when the frame material 1 is made of ordinary steel pipes for scaffolding as in the embodiment, it can be sufficiently adapted to the size of the site by adding additional parts. However, the framework material 1 is not limited to steel pipes for scaffolding, and other materials such as other steel pipes or synthetic resin pipes may also be used. Furthermore, as shown in Fig. 5, as shown in Fig. 5, a large number of triangular cloths 12 with eyelets 9 attached to their upper surfaces may be attached with only one side sewn together. A rubber string 10 is tied to the attachment wire 6 and stretched. Furthermore, by attaching the arch portion to the upper end of a scaffolding material assembled for working on a building frame, it can also be used for curing a building frame.

This invention consists of the above-mentioned structure, but to describe the procedure for assembling it, first, a stepladder A is erected in the center of the site, and the intersecting parts of the two frame members 1, 1 at the center are placed on this stepladder A. At this time, the frame material 1,
The end of 1 becomes dangling (Fig. 6). Next, as shown in FIG. 7, a clamp 4 is attached to each end of the frame members 1, 1, and a wire 6 is stretched across the end between the frame members 1, 1 via the clamp 4. Pull the center of the wire with a rope to give tension to the wire.

Furthermore, as shown in FIG. 8, the mesh sheet 7 is stretched.In this case, the wires 6 are tied around the four peripheries of the mesh sheet 7 using rubber strings 10, and the wires 6 are tied one after another, so that the entire sheet does not sag. conduct. After that, as shown in FIG.
Establish the pillars 2 and supports 5 at positions corresponding to the ends of the frame members 1, and use a winch or human power to lift the ends of the frame members 1 one by one to separate each end of the frame member 1, the pillars 2, and the supports 5. They are joined using clamps 4, respectively.

As mentioned above, the waterproof sheet 8 is stretched only in rainy weather, and when not in use, it is gathered at the end of the roof surface formed by the mesh sheet 7, and when in use, the mesh sheet 7 is stretched. It is further stretched to cover the mesh sheet 7, and attached by binding the rubber cord 10 to the wire 6 in the same manner as the mesh sheet 7.

(Effects of the invention) As described above, since this invention has a simple structure, assembly work and removal work can be easily carried out in a short time, and expenses such as material costs and labor costs are very low. A plurality of intersecting frame members are narrowed down by wires strung across the four circumferential surfaces between their ends to form an upwardly convex arch shape. Therefore, the frame members are constantly trying to expand due to internal stress, but this is suppressed by the wires, resulting in an extremely stable structure that can withstand large loads despite its simple and lightweight structure. It is configured like this. Moreover, since the sheet stretched over the top of the frame material is tied to wires stretched around the four sides using elastic strings such as rubber cords, it can always be kept taut without sagging. Rainwater is reliably drained around the seat without leaking in the middle of the seat. Furthermore, by changing the angle at which the frame members intersect, it can easily accommodate sites of various sizes and shapes.

[Brief explanation of drawings]

Figure 1 is a perspective view, Figure 2 is a longitudinal sectional view, Figures 3A and B are plan views showing the frame members at different angles, and Figure 4 shows the rope attached to the waterproof sheet. FIG. 5 is a plan view showing another embodiment of the seat, FIGS. 6 to 9 are perspective views showing the assembly order, and FIG. 10 is a perspective view showing a conventional example. 1... Frame material, 2... Column, 3... Base board, 4
... Clamp, 5 ... Support material, 6 ... Wire,
7...Mesh sheet, 8...Waterproof sheet, 9...
Eyelet, 10... Rubber string, 11... Rope, 12...
...triangular cloth, A...stepladder.

Claims (1)

[Scope of utility model registration request] In a tent structure in which rod-shaped frame materials are assembled and a sheet is stretched over the top of the frame materials, multiple columns are erected around the periphery of the site where construction is planned, and diagonal lines are straddled between the columns and intersect in the middle. Arrange the framework materials,
The frame material is curved in an upwardly convex shape, and a string is stretched between the ends of the frame material and surrounds the periphery.
Elastic strings were attached around the sheet, and the strings were tied to the strings stretched between the frame members, and the sheet was stretched over the frame members to form a roof surface. A tent structure characterized by: