JP2002356988A - Scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tough scaffold easy to assemble from a small number of kinds of part items without requiring special knowledge or techniques, for a low-story housing or at a construction site where there is no need for large amounts of temporary building materials. SOLUTION: A scaffold is provided comprising two wall bodies 1 erected vertically so that their respective wall surfaces constructed of truss structures are opposite each other, and connecting members 4 for connecting the wall bodies together. The wall body 1 comprises truss frames 2 of the same length and an assembly of equilateral triangle units constructed of connecting joints 3 of the same shape. The connecting joint is in the form of a plate and uses a bolt-receiving structure at its connection to the truss frames. The bolt- receiving structure extends radially in six directions which are 60 degrees apart from one another, relative to the plane of the plate shape, with their axes located on the same plane and converging to one point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a construction / construction site,
It relates to scaffolds used for temporary bridges.

[0002]

2. Description of the Related Art Temporary scaffolds found at construction sites and the like include a single pipe scaffold assembled by a single pipe and a tie.
It can be broadly divided into frame scaffolds in which pre-assembled gate-shaped frames are assembled three-dimensionally. The former can be used in any place and is widely used, but in order to install this temporary structure with sufficient strength, specialized knowledge on strength calculation and It required skilled skills. In the latter case, assembly and disassembly can be performed by simple work. It is inconvenient because it lacks simplicity when used in small quantities such as for homes and two-story houses.

[0003] Regardless of which scaffold is employed, base metal fittings are required for each interval of the building, and it is very important to maintain the level of the scaffolding with each base metal fitting. Also had a great effect and was an important part requiring skill.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to assemble a low-rise house or a site that does not require a large amount of temporary materials as described above without requiring specialized knowledge and skills, and with a small number of parts and simple assembly. It is to provide a possible and robust scaffold.

[0005]

Means for Solving the Problems To solve the above-mentioned problems, the truss structure is composed of two wall bodies which are vertically formed so as to face each other and have a connecting member for connecting them. Provide a scaffold. Further, a truss frame having the same length as the wall body, a two-plane truss structure composed of a combination of equilateral triangular units composed of coupling joints of the same shape, and a coupling member for coupling them. And provide a scaffold composed of: In addition, the connection joint has a plate-like shape, a joint portion with the truss frame has a bolt receiving structure, and the bolt receiving structure extends in six directions at intervals of 60 degrees radially with respect to the plate-like plane, The scaffold is characterized in that its axes are coplanar and concentrated at one point.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The scaffold of the present invention is a scaffold composed of two wall surfaces which stand vertically so as to face each other and a connecting member for connecting them. The two walls standing vertically have a flat truss structure, which is a collection of triangular frames made of only a truss frame made of pipes and the like and a connection joint.

This truss structure has a minimum structure of a truss unit composed of a combination of equilateral triangular units composed of three truss frames having the same length and three plate-like connecting joints having the same shape. By configuring as a unit, a simpler and stronger truss structure can be provided.

The connecting joint used here has a plate-like shape, and a joint portion with the truss frame has a bolt receiving structure. The bolt receiving structure is radially spaced from the plate-like plane at intervals of 60 degrees in six directions. The elongation, the axis of which is co-planar and concentrated at one point, allows for easy assembly work and guarantees the flatness of the truss structure.

[0009] In general, on a scaffold for the second floor, a person or a construction material is applied as a load from above, but since the scaffold is not high, a lateral force that twists the scaffold is hardly applied. Therefore, it is possible to withstand the demand for strength of the scaffold simply by using two vertical walls having a simple flat truss structure capable of withstanding the upper load. Since the truss structure is a solid triangular frame structure, the truss structure exerts a strong strength with a small number of members against a load applied to the same plane from above.

[0010] By forming the truss structure as an equilateral triangle using truss frames of the same length and connecting joints of the same shape, it is possible to exert the same drag on forces in any direction. It is possible to use a member in any direction, and it is possible to create a strong and freely sized plane.

The connection joint has a bolt receiving structure for receiving a truss frame bolt in six directions with respect to its plane. In the truss structure composed of the equilateral triangles, a bolt receiving structure is required in each of the 60-degree directions, and a bolt-receiving structure is prepared in each of the 60-degree directions so that the directionality of the connection joint can be considered during assembly. Without the need for assembly.

The bolt receiving structures extending in the six directions radially at an angle of 60 degrees with respect to the plane of the connecting joint have their axes coplanar and concentrated at one point. Therefore, when assembling the wall of the truss structure, the flatness is easily ensured, and an ideal structure in which a bending moment is hardly generated in response to a load from above is obtained.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a scaffold used for a temporary bridge using the present invention. The wall bodies 1 on both side surfaces are three-dimensionally assembled by connecting members 4 at corresponding portions. On the upper and lower surfaces of the scaffold, a reinforcing connecting member 5 is obliquely provided to increase the strength of the box shape, and a scaffold plate 6 is laid on the lower connecting member as a passage. In this structure, the truss frames 2 have the same length, respectively.
The connection joint 3 is also made of a member having the same shape.

FIG. 2 shows the structure of the truss frame 2, and FIG. The main body 21 of the truss frame has an elliptical cross section, and the middle is perforated for weight reduction, but there is no particular limitation on the shape, and carbon steel pipes for general structures often used for scaffolds and the like are also available. Can be used. The material, shape, and length can be changed according to the strength of a required place such as a construction site, a temporary bridge, or a bed.

At both ends of the truss frame, connection bolt fittings 22 are mounted. Although the connection bolt attachment 22 is attached to the truss frame body by welding, other methods such as screwing and riveting may be used. A screw receiving portion 23 that fits with the connection bolt is attached to an end of the connection bolt attachment that comes into contact with the connection joint. The central axis of the screw receiving portion is coaxial with the central axis of the truss frame. The connection bolt 41 has a hexagonal hole for a hexagonal wrench at its head for fastening to a connection joint.

FIG. 4 shows the structure of the connecting joint 3, which has a substantially disk shape, and has bolt receiving structures 31 installed in six directions with respect to the plane thereof. The bolt receiving structure is a screw receiver, and the connection between the connection joint and the truss frame is performed by tightening bolts. The axes of the bolt receiving structures 31 are on the same plane, are concentrated at one point in the center, and the respective angles are open at an angle of 60 degrees. The side hole 33 is a screw hole that has been machined in advance for attaching the connecting member.

FIG. 5 is a structural view of the base fitting 8, showing the mounting structure of the base fitting. The base fitting 8 is attached using two bolt receiving structures at the lower part of the connection joint. The height of the scaffold is adjusted to be horizontal by turning the lower nut portion 81. In this scaffold structure, it is possible to support only the four corners of the scaffold with the base metal fittings. This is because, since the vertical plane has a truss structure, even if it has a long span, it does not easily bend, and does not require a large number of support points unlike the conventional method.

With such a structure, a stable and high-rigidity structure can be made with respect to an arbitrary load in the vertical direction, and a structure having a long span can be easily formed in the horizontal direction. I was able to assemble a good scaffold.

In addition, the scaffold could be assembled with a total of five types of members, two types of base metal fittings, truss frames, connection joints, and connection members.

FIG. 6 shows another embodiment when used in a detached house. According to this structure, the equilateral triangular truss wall body is very strong against the force from the upper part, so the base metal fittings need to be provided at four places at both ends, horizontal level can be easily secured, and the scaffolding can be performed with few types of members. Could be installed.

[0022]

According to the present invention, there are few types of parts, assembly is possible only by bolt tightening work, and no special skills or specialized knowledge or design for temporary structures are required. But a scaffold that could be easily assembled was obtained.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a scaffold.

FIG. 2 is a plan view showing a truss frame.

FIG. 3 is a sectional view showing a structure of a truss frame.

4A is a left side view of the connection joint, FIG. 4B is a plan view, and FIG. 4C is a right side view.

FIG. 5 is a plan view showing a mounting structure of a base fitting.

FIG. 6 is a schematic perspective view of a scaffold used for a detached house.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall body 2 Truss frame 21 Truss frame main body 22 Connection bolt attachment 23 Connection bolt attachment through hole 3 Connection joint 31 Bolt receiving part 33 Screw hole for connecting member 4 Connection member 41 Connection bolt 5 Reinforcement connection member 6 Scaffold plate 8 Base bracket 81 Height adjustment nut

Claims (3)

[Claims] 1. A scaffold composed of two wall bodies which are formed of a truss structure and stand vertically so that their wall surfaces face each other, and a connecting member for connecting them. 2. The wall according to claim 1, wherein the wall is composed of a truss frame having the same length as each other and an equilateral triangular unit composed of connecting joints having the same shape as each other. Scaffold. 3. The connection joint has a plate-like shape, a joint portion with the truss frame has a bolt receiving structure, and each of the bolt receiving structures has a radial shape with respect to a plate-like plane.
3. The scaffold according to claim 2, wherein the scaffolds extend in six directions at intervals of 0 degrees, and their axes are coplanar and concentrated at one point.