JPH1113276A - Scaffold structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a scaffold to be easily carried with simple work. SOLUTION: The members 3, 4, 5 of a truss support to support a scaffold plate 14 are hinge-connected together so that the truss support is flexible in transverse to the longitudinal direction of the upper long member 3. During carriage and storage, the members 3, 4, 5 are overlapped with one another into a compact shape. During supporting the scaffold plate 14, the supporting plane of the scaffold plate 14 can be formed simply by elongating the truss support and locking a lock member 10 to the elongated member 4. In the condition that the truss support is elongated, great strength and rigidity are granted to a whole scaffold structure 1 with the operation of the truss to form a stable scaffold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold structure which is hung from a steel girder, a railing, or the like of a highway or a bridge having a high traffic volume below, and which is used for inspection, repair work, and the like around the structure. .

[0002]

2. Description of the Related Art Conventionally, in the work of painting near a steel girder of a highway or a bridge, tightening a high-tensile bolt, or inspecting and repairing the work, FIG. A scaffold 100 as shown is installed, and an operator rides on the scaffold 100 to perform these works.

[0003] The work of installing this scaffold first requires the main girder 10.
1, a chain 102 is suspended at a predetermined interval, and a vertical member 103 called an “yago pipe” is passed through the lower end of the suspended chain 102. Thereafter, a horizontal member 104 called a roll is laid over the vertical member 103, and the vertical member 103
And the cross member 104 are fixed with an orthogonal clamp or the like. Then, the scaffold plate 105 is placed on the cross member 104, and finally, the scaffold plate 105 is fixed by a number line or the like, and a scaffold suspended from the main girder 101 is installed.

[0004]

As described above, the work of installing the scaffold is complicated because the various members are assembled at a high place, and requires a skilled skill and a long working time.

[0005] Further, since various members are handled, there is a risk of falling of the members, and when there is a road below, it is necessary to restrict traffic during this work.

Further, since the load applied to the scaffold plate 105 is received only by the vertical members 103 and the horizontal members 104, a large bending stress is generated in each member, and the scaffold plate 105
The work in high places was unstable due to the large bending of the wire.

In order to solve these problems, Japanese Patent Laid-Open Publication No.
According to 290513, a technique using a truss-like scaffold structure assembled in a factory or the like as a scaffold is disclosed. That is, the truss-like scaffold structure is lifted by a crane boom or the like to a position where the scaffold is installed, and is suspended from a steel girder or the like by a chain.

However, since this truss-like scaffold structure is a large structure, it is transported by a large truck,
It has to be lifted by a plurality of crane booms, which is a large-scale operation, which increases the cost. Further, there is a problem that a scaffold cannot be installed in a place where a crane truck cannot enter.

The present invention has been made in consideration of such conventional problems, and has as its object to provide a scaffold structure capable of reducing a danger of falling of members and allowing a stable scaffold to be installed. And

Another object of the present invention is to provide a scaffold structure that can be easily transported and can be installed with a simple operation.

[0011]

In order to achieve the above object, a scaffold structure according to claim 1 comprises a plurality of upper elongate members arranged in parallel with each other, and an upper elongate member below the upper elongate members. A plurality of lower elongate members arranged in parallel with the elongate member, a truss-like support in which an upper elongate member and a lower elongate member are connected by an inclined member, and an upper elongate member of the truss-like support In a scaffold structure having a suspended scaffold plate, a pair of upper and lower elongate members are connected to each other by an inclined member to form a connection unit, and an upper elongate member or a lower portion of an adjacent connection unit is connected. The truss-like supports are connected to each other by connecting the connecting members by hinge-connecting the truss-like supports so that the truss-like supports can be extended and contracted in a direction perpendicular to the longitudinal direction of the upper elongate members. For multiple upper or lower elongate members The truss-like support is maintained in an extended state by locking the lock member.

Since the truss-like support is hingedly connected between the connecting units, the truss-shaped support can be formed in a compact shape in which the connecting units are overlapped during transportation and storage.

When the scaffold is installed, the truss-like support can be extended in a direction orthogonal to the upper elongated member to form a rectangular support surface on which the scaffold is installed.

The state where the truss-like support is extended is held by the lock member, and the truss-like action imparts large strength and rigidity to the entire scaffold structure, and also reduces the amount of deflection of the scaffold plate.

Further, the scaffolding structure according to claim 2 includes a plurality of upper elongate members arranged in parallel with each other, and a plurality of upper elongate members arranged below and in parallel with the upper elongate member. A scaffold comprising: a lower elongate member; a truss-like support in which the upper elongate member and the lower elongate member are connected by an inclined member; and a scaffold plate spanned over the upper elongate member of the truss-like support. In the structure, at least one of the upper elongate member and the inclined member or at least one of the lower elongate member and the inclined member is hinged, and the truss-like support is expanded and contracted in a direction orthogonal to the longitudinal direction of the upper elongate member. It is characterized in that the truss-shaped support is held in an extended state by locking a lock member to a plurality of upper elongated members or lower elongated members of the extended truss-shaped support.

In the truss-shaped support, the inclined member and the upper or lower elongated member are hingedly connected.
At the time of transportation and storage, each member can be formed into a compact shape in which the members are stacked.

When the scaffold is installed, the truss-like support can be extended in a direction orthogonal to the upper elongated member to form a rectangular support surface on which the scaffold is installed.

The state in which the truss-like support is extended is held by a lock member, and the truss-like action imparts large strength and rigidity to the entire scaffold structure, and also reduces the amount of deflection of the scaffold plate.

Furthermore, the scaffold structure of claim 3 is characterized in that the lock member is a scaffold plate.

[0020] Since the scaffolding plate spanning the upper elongate member is locked to the plurality of upper elongate members, the extended truss-like support is held in its extended state.

Since the scaffold plate also serves as the lock member, the number of members to be used can be reduced, and in the work of erection of the scaffold plate, the truss-like support can be prevented from opening.

Further, in the scaffold structure according to the fourth aspect, the upper elongate member of the adjacent truss-like support is connected to the upper elongate member by a clamp member, so that the upper elongate member can be in the longitudinal direction or the longitudinal direction. It is characterized in that the truss-like supports are connected in a direction perpendicular to the direction.

By connecting the truss-like supports,
The scaffold structure can be arbitrarily continuous in any direction perpendicular to the scaffold, and a scaffold of a desired size can be installed.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A scaffold structure 1 according to a first embodiment of the present invention will be described below with reference to FIGS. FIG.
FIG. 2 is a perspective view of a main part of the truss-shaped support 2, FIG. 2 is a front view of the connecting unit 6, FIG.
Is a front view showing the folded state of the truss-like support 2, FIG. 5 is a longitudinal sectional view of the scaffold structure 1, and FIG.
It is a perspective view of.

In these figures, reference numeral 3 denotes an upper elongate member, and a lower elongate member 4 having the same shape and a plurality of inclined members 5
Are linked by Each of the members 3, 4, and 5 is formed of a long round pipe made of iron, and a large number of inclined members 5 formed to have a diameter slightly smaller than those of the other members 3 and 4.
The lower elongate member 4 and the lower elongate member 4 are attached by welding so as to be inclined in opposite directions at regular intervals along the longitudinal direction of these members. As a result, as shown in FIG. 2, the pair of upper elongate members 3 and lower elongate members 4 are formed by a large number of slopes attached in a zigzag shape in which a V-shaped peak and a V-shaped valley are continuous. The connecting unit 6 is integrated by the member 5 and has a rectangular shape as a whole.

The plurality of connecting units 6, 6... Thus constructed are further connected to the adjacent upper elongate members 3, 3,.
The truss-like support 2 shown in FIG. 1 is formed by connecting the spaces and the lower long members 4 and 4 in a zigzag shape by hinge connection. 3, the connecting unit 6,6 while those of showing the structure of hinged, at one of the lower elongated member 4 _A, a pair of outer coupling the portion corresponding to the valley of the V-shaped angled member 5 Pipe 7 , 7 are welded, and the adjacent lower elongate member 4 facing the outer connecting pipes 7, 7
_The inner connection pipe 8 is welded to the portion _B.

The hinge connection is performed by arranging the inner connecting pipe 8 coaxially between the outer connecting pipes 7, 7, and inserting the pivot pin 9 through these connecting pipes 7, 8.
When the connecting pipes 7 and 8 are connected by the pivot pin 9, the connecting units 6 and 6 are hinged in a valley shape.

Reference numeral 9a denotes a retaining projection urged so as to protrude from an end side surface of the pivot pin 9, and when the pivot pin 9 is inserted, the projection is retracted into the end side surface to connect the connecting pipe 7,
After inserting the pivot pin 8, the pivot pin 9 is made to protrude to prevent the pivot pin 9 from coming off.

[0029] In a similar arrangement, as shown in FIG. 1, a pair of outer connecting pipes 7 and 7 that are welded to the portion corresponding to the mountain portion of the V-shaped angled member 5 in the upper elongate member 3 _A, adjacent an inner connecting pipe 8 which is welded to a portion facing the upper elongate member 3 _B, joined by inserting the pivot pin 9, between connection units 6, 6 hinged to the mound.

As described above, the truss-shaped support 2 can be extended and contracted in a direction orthogonal to the longitudinal direction of the upper elongated member 3 by connecting the connecting units 6 and 6 in a zigzag hinge manner. It can be folded as shown and stretched as shown in FIG.

As shown in FIG. 1 and FIG. 5, a lock member 10 is stretched over the lower elongated members 4, 4,... In the lock member 10, a portion straddling the lower long member 4 of the round pipe is processed into a flat plate shape,
A lock projection 11 integrally projecting upward from the inner connection pipe 8 is passed through a through hole formed in the flat plate-shaped portion. When the lock projection 11 penetrates, the lock member 10 is locked to the lower elongate members 4, 4,.
Expansion and contraction of the truss-like support 2 are regulated. As shown in FIG. 3, the lock projection 11 is formed of a lock pin such as a gravity lock, and is urged sideways by a lock piece 11a.
However, after penetrating the lock member 10, it protrudes to the side and holds the locked state. The upper part of the lock piece 11a is
Since the taper is formed, the through-hole of the lock member 10 is aligned with the lock projection 11 of the extended truss-like support 2, and the two members are engaged simply by pushing down the lock member 10, and the truss-like support is easily formed. The work of closing the body 2 can be performed.

At the hinges at the four corners of the truss-like support 2,
An inverted U-shaped hanging hook 1 is attached to the outer connecting pipes 7,7.
2 are integrally straddled. As shown in FIG. 5, a rope 13 such as a chain is attached to each of the hanging hooks 12, and the entire scaffold structure 1 is hung on a main girder (not shown). The reason why the hanging hooks 12 are inverted U-shaped is to allow the lock member 10 to be inserted between the inverted U-shaped shapes without interfering with the lock member 10 described above.

A rectangular scaffold 14 formed of expanded laths or the like is placed on the truss-like support 2 which is prevented from opening by the lock member 10, thereby forming the scaffold structure 1.
The scaffold plate 14 is stretched over the upper elongated members 3, 3,... Of the truss-like support 2 in an extended state, and the length thereof is slightly longer than the upper elongated members 3, 3 at both ends. The width is not more than の of the pitch between the hinge portions provided on the upper elongated members 3. Therefore, as shown in FIG. 6, the above-mentioned chain 13 can be pulled out from the gap where the scaffold plate 14 is bridged. Each of the portions of the back surface of the scaffold plate 14 where the upper elongate members 3, 3... Abut, is integrally attached with a positioning bracket 15 that is bent so as to cover the upper surface of the upper elongate member 3. It does not move on the truss-like support 2 (see FIG. 5).

The scaffold structure 1 configured as described above is
As shown in FIG. 7, the scaffold structure 1 ′ 1 ″ having the same structure similarly suspended by the chain 13 is connected in any orthogonal direction by using the parallel clamp 16 or the double clamp 17. I can do it.

The parallel clamping member 16, as shown in FIG. 8, a pair of upper elongated member 3 _A, 3 the upper and lower clamping plate 16a formed in a waveform in accordance with the pitch of the _B, and 16b, adjacent scaffold upper elongate member 3 _a projecting respectively from the structure _{1,1', 3 B, 3 a '} , 3 B' , said clamp plate 16a of one side is hinged, sandwiched by 16b,
Clamping plates 16a, screwed other side of 16b, the upper elongate member _{3 A, 3 B, 3 A} ', 3 B' is for connecting between. A predetermined upper elongate member 3, 3 projecting from one side surface of the scaffold structure 1 is clamped by using the parallel clamp fitting 16, and another scaffold structure 1 'is formed along the longitudinal direction of the upper elongate member 3. Concatenate.

As shown in FIG. 9, the double clamp member 17 is formed by integrating a pair of clamp members 17b and 17c via a connecting portion 17a, and one of the clamp members 17b is connected to the scaffold structure 1. One end of the upper elongated member 3 is clamped, and the other clamp 17c is clamped to the upper elongated member 3 '' of the adjacent scaffold structure 1 '', so that the upper clamp 3c is orthogonal to the longitudinal direction of the upper elongated member 3. The other scaffold structure 1 '' is connected in the direction.

Therefore, these clamp members 16, 17
Can be used to set scaffolds of any direction and size.

Next, a procedure for installing the scaffold structure 1 will be described.

First, a plurality of chains 13 are attached using a hanging clamp or the like along a main girder above a place where a scaffold is to be installed. Next, the truss-like support 2 folded as shown in FIG. 4 is carried to below the chain 13 by a crane or the like, and the lower end of the chain 13 is attached to the hanging hook 12 to suspend the truss-like support 2.

Thereafter, the suspended truss-like support 2
Then, the operator gets on and pushes open the upper elongate member 3 at one end to extend the truss-like support 2 as shown in FIG. At the same time as the extension work, the lock member 10 is moved to the lower long member 4, 4,.
And the truss-like support 2 is extended until the lock protrusion 11 and the through-hole of the lock member 10 coincide with each other. When the lock member 10 is pressed down in a state where the two coincide with each other, the lock protrusion 11 penetrates the lock member, and the truss-like support 2
Is stopped.

Subsequently, as shown in FIG. 5, the scaffolding plate 14 is positioned so that the positioning metal 15 covers the upper surface of the upper elongated member 3.
Are wound on the upper elongate members 3, 3,..., And as shown in FIG. 6, all the scaffolding plates 14 are placed on the truss-like support 2, whereby the scaffolding structure 1 according to the present invention is installed. You.

FIG. 10 shows a scaffold structure 20 according to a second embodiment of the present invention. The same components as those in the above embodiment are denoted by the same reference numerals and description thereof is omitted. I do.

In this embodiment, the upper elongated member 21
The lower elongate member 22 uses an iron square pipe, and the upper elongate member 21 and the inclined member 5 and the lower elongate member 22 and the inclined member 5 are each connected by a hinge flange 23. They are hinged. still,
The upper elongated member 21 or the lower elongated member and the inclined member 5 are directly hinged to each other by the hinge flange 23, but are indirectly hinged to both ends of the inclined member 5 via another member. There may be.

As described above, when the both ends of the inclined member 5 are directly hinged to the respective members 21 and 22, a pair of upper elongate members 3 and 3 are connected to the hinge as in the above embodiment.
Alternatively, the number of members constituting the scaffold structure 20 can be reduced without the need for the lower elongate members 4, 4 and the connecting pipes 7, 8, and the like. The body can be made more compact.

It is needless to say that the shape of the upper and lower elongate members is not described in the present embodiment, but the shape is arbitrary. In particular, when the cross section is rectangular as in the present embodiment, the scaffold plate 1
4 can be stably supported, and the positioning fitting 24 can be formed by a simple bending process.

In each of the above-described embodiments, the lock member 10 is locked to the lower elongated members 4 and 22 to restrict expansion and contraction of the truss-like support. Alternatively, the scaffold plate 14 may be locked to the upper elongate members 3 and 21 to restrict expansion and contraction of the truss-like support. As described above, if the scaffold plate 14 functions as the lock member 10, it is not necessary to separately prepare the lock member 10, and the work of attaching the lock member 10 can be performed during the work of bridging the scaffold plate 14. .

[0047]

According to the present invention, since the truss-like support, which is the main component of the scaffold structure, is unitized, the work of assembling various members at a high place to install the scaffold is performed. Significantly reduced, simple work and reduced work time. Further, since the truss-shaped support is unitized, the danger of falling of the member can be reduced.

Further, the unitized truss-like support is
Since the connecting units 6 and 6 or both ends of the inclined member 5 are hingedly connected to each other so that they can be expanded and contracted,
A compact shape in which the constituent members are stacked can be obtained. Therefore, transportation and installation are facilitated, and a scaffold can be installed even in a place where a crane truck cannot enter.

Further, in the state where the truss-like support is extended, the upper and lower elongated members are connected by the inclined member 5, so that the vertical load on these members and the oblique load along the inclined member 5 are obtained. Excellent rigidity is exhibited. Therefore, even if an operator rides on the scaffold plate 14 or places a workpiece thereon, the scaffold plate 14 does not bend significantly.
It can be a stable scaffold.

According to the third aspect of the present invention, in addition to this, the number of members to be used can be reduced because the scaffold plate also serves as the lock member. Can also be used to prevent the door from opening.

Further, according to the invention of claim 4, in addition to this, the scaffold structures can be arbitrarily continued in any direction orthogonal to each other, and a scaffold of a desired size can be installed. it can.

[0052]

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a truss-like support 2 constituting a scaffold structure 1 according to a first embodiment of the present invention.

FIG. 2 is a front view of the connection unit 6. FIG.

FIG. 3 is a perspective view of a hinge connection part.

FIG. 4 is a front view showing a folded state of the truss-like support 2;

5 is a vertical sectional view of the scaffold structure 1. FIG.

6 is a perspective view of the scaffold structure 1. FIG.

FIG. 7 is a plan view showing a state where the scaffold structures 1, 1 ', 1''are connected.

FIG. 8 is a perspective view of a parallel clamp fitting 16;

FIG. 9 is a sectional view taken along line AA of FIG. 7;

FIG. 10 is a longitudinal sectional view of a scaffold structure 20 showing a second embodiment of the present invention.

FIG. 11 is a cross-sectional view showing an installation operation of a conventional scaffold structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 20 Scaffold structure 2 Truss-like support 3, 21 Upper long member 4, 22 Lower long member 5 Inclined member 6 Connecting unit 10 Lock member 14 Scaffolding board 16 Parallel clamp metal 17 Double clamp metal

Claims (4)

[Claims] 1. A plurality of upper elongated members (3) arranged parallel to each other, and a plurality of lower elongated members (3) arranged below and parallel to the upper elongated member (3). A lower elongate member (4); a truss-like support (2) in which an upper elongate member (3) and a lower elongate member (4) are connected by an inclined member (5); A scaffolding structure comprising a scaffold plate (14) spanned over an upper elongate member (3), wherein a pair of an upper elongate member (3) and a lower elongate member (4) are The connecting unit (6) is connected by (5), and the upper long member (3) or the lower long member (4) of the adjacent connecting unit (6) is hingedly connected to connect the connecting unit (6). To make the truss-like support (2) extendable and contractible in a direction perpendicular to the longitudinal direction of the upper elongated member (3). A lock member (1) is attached to a plurality of upper elongate members (3) or lower elongate members (4) of the stretched truss-like support (2).
A scaffolding structure characterized in that the truss-like support (2) is held in an extended state by locking the truss-like support (2). 2. A plurality of upper elongated members (21) arranged parallel to each other, and an upper elongated member (21) below the upper elongated member (21).
A plurality of lower elongate members (22) disposed in parallel with the above, a truss-like support body in which the upper elongate member (21) and the lower elongate member (22) are connected by an inclined member (5), In a scaffold structure provided with a scaffold plate (14) bridged over an upper elongate member (21) of a truss-like support, a scaffold structure between the upper elongate member (21) and the inclined member (5) or a lower elongate member At least one between the member (22) and the inclined member (5) is hinged, and the truss-like support is made extendable and contractible in a direction orthogonal to the longitudinal direction of the upper elongate member (21), and is extended. A plurality of upper elongated members (2
1) Alternatively, the lock member (1) is attached to the lower elongate member (22).
A scaffold structure, wherein 0) is locked to keep the truss-like support in an extended state. 3. The scaffolding structure according to claim 1, wherein the locking member is a scaffold plate (14). 4. The upper elongate members (3) and (21) of adjacent truss-like supports are connected to the upper elongate members (3) and (21) by clamp members (16) and (17), respectively. The scaffold structure according to any one of claims 1 to 3, wherein the truss-like supports are connected in a longitudinal direction of the length members (3) and (21) or in a direction perpendicular to the longitudinal direction.