JPH09250235A - Prefabricated scaffolding - Google Patents

Abstract

(57) [Abstract] [Problem] To provide a scaffold that can be disassembled compactly and that can be easily assembled. SOLUTION: A base frame 10 provided at the lowermost position of a scaffold is composed of a pair of frames 11 in which straight projections 15 are erected at predetermined intervals in a longitudinal direction, and are disassembled by a connecting member 12 at relative positions. Can be assembled. The two-legged ladder member 20
The connecting member 2 for connection between the uppermost and lowermost horizontal bars 23
It is connected horizontally with 1 interposed. In the connected state, the lower ends of the side girders 22 of the ladder member 20 are inserted into the cylindrical protruding portions 15 of both frames 11 of the base frame 10 in a removable double cylindrical shape. The side girder 22 is configured in a double-cylindrical shape so that its height can be adjusted. A scaffolding board 60 is laid between the connected topmost horizontal bars 23. If the ladder member 20 is added upward, a multi-stage structure can be obtained. Further, a handrail may be provided on the uppermost stage.
Further, between the upper ends of the side girders 22 located at the four corners of the assembled scaffold, the skirting board 30 may be horizontally provided by inserting the tubular connecting portions 31 at both ends thereof into the upper ends of the side girders in a double cylindrical shape. . Scaffold disassembly is the reverse of the above procedure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffolding scaffold, and more particularly, to a constituent member thereof which can be easily assembled and can be disassembled in a more compact size than conventional ones.

[0002]

2. Description of the Related Art Conventionally, single pipe scaffolds, frame scaffolds, etc. have been known as scaffolds used at construction sites. Especially,
Frame scaffolds that are easy to assemble are relatively common.
Such frame scaffolding, which forms the front and back surfaces of the scaffold,
It is composed of scaffold members such as cross braces, beam frames and cloth frames. At the site, the beams are erected face-to-face through the beams and cross braces, and a cloth frame is laid across the beams to temporarily establish scaffolds. In addition, a mobile scaffolding, which is generally called a rolling tower, which has casters on the lower end side of the support column with substantially the same configuration is also known. Frame scaffolding with the above configuration is used at external construction sites where the scaffolding assembly space can be taken relatively freely, but in a narrow space such as an underground pit where access points for carrying in scaffolding materials cannot be taken sufficiently. In, a single tube scaffold is used.

[0003]

In the conventional frame scaffold,
The structural members such as the building are formed into a block that is integrally assembled to some extent in order to simplify the assembling work. Although it is convenient in that it can be disassembled so that it can be assembled, it cannot be used in a narrow site such as an underground pit because the blocks of the components are still bulky. A scaffold that can be more compactly disassembled is desired. On the other hand, the single-pipe scaffold has less space-related obstacles related to loading and assembling scaffolding materials, as compared with the frame scaffold having the above-described configuration. However, the assembly of single-tube scaffolding requires the use of multiple clamps to assemble single tubes such as steel pipes to form a scaffolding set that is similar to traditional log scaffolding.

Therefore, the scaffolding assembler who is somewhat skilled is required for the assembling, and the assembling work takes a lot of time. Such inconvenience has been pointed out for assembling scaffolding in a narrow space. It can be disassembled compactly, but it does not take time to assemble. Therefore, the present invention has been proposed in view of the above problems, and an object thereof is to provide a scaffold that can be disassembled in a more compact size than the conventional one, and that can be easily disassembled / assembled without being bound by the configuration of a conventional frame scaffold. .

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 of the present application is a scaffold of an assembly type, wherein the scaffold is a pair having a rod-shaped or cylindrical protruding portion. The frames are arranged at opposite positions, and are separably connected by a connecting member that spans between the frames, and an assembling type base frame provided at the lowest position of the scaffold, and a rod-shaped or cylindrical projection of each frame. Between the side girder of the ladder member and the ladder member that can be connected to the side part, can be connected in the lateral direction of the side girder, and can be added upwards at the upper end side of the side girder. It is composed of connecting braces and a scaffolding board spanning between the crosspieces of the ladder members which are erected face-to-face.

The base frame of the assembling scaffolding constructed as described above is assembled by connecting a pair of frames with a connecting member that spans between the frames in a state where they are arranged relative to each other. As the connecting member, for example, a brace that horizontally intervenes between the frames, or a beam that connects both end sides between the opposing frames and bridges them may be used. In the opposite frame of the assembled base frame, a rod-shaped or tubular protruding portion (both rod-shaped or cylindrical protruding portions are collectively referred to as a locking portion for simplicity in the following when collectively referred to. Is provided, a ladder member is removably attached to this portion and is erected face-to-face to form a portion corresponding to a conventional frame scaffold. By adopting the attachable / detachable attaching means, the disassembling or assembling can be performed easily and in a short time as compared with the case where the attaching means such as the bolt connection is adopted.

[0007] Between the side girders of the ladder members installed facing each other,
The scaffolding is reinforced by interposing brace with the crossing surface vertical. In this way, the scaffolding board is bridged between the horizontal members (preferably between the uppermost horizontal members) of the ladder members that face each other on the base frame. In addition, after that, skirting boards may be horizontally provided between the side girders of the ladder members which are erected face-to-face and between the upper ends of the side girders located at the four corners of the scaffold. The side girders at the four corners of the scaffold may be connected by skirting boards, and the skirting boards may also serve as beams and girders to further strengthen the scaffolding.

Further, when the scaffold is formed in multiple stages,
The upper end side of the side girder of the ladder member and the lower end side of the side girder of the additional ladder member, which are erected on the frame of the base frame in the above-described manner, are appropriately provided (for example, by using a conventional connecting pin).
All you have to do is add it upwards. The scaffolding board is bridged between the upper tiers of the added ladder members, and the skirting board is also laid between the upper ends of the side girders in the same manner as described above, whereby the upper tier scaffolding can be formed. It is possible to form a multi-step structure by appropriately repeating the assembling procedure. The scaffolding plate may be provided in each step, or may be provided only in the uppermost step. When a skirting board is provided, it is preferably provided on the uppermost stage.

Further, in the above construction, since the ladder member is used to assemble the portion corresponding to the conventional frame scaffolding, the building portion supporting the scaffolding can be used as a means for raising and lowering the scaffolding. It is not necessary to provide a separate lifting means. In addition, disassembling the scaffold may be performed in almost the reverse order of the assembly. In the configuration of the present invention, among the assembling work of the scaffolding, the main assembling work such as the standing up of the ladder member on the frame is performed by the attachable / detachable attachment means. Work can be done in a short time without disassembling. If the casters are detachably provided on both ends of the frame, the assembled scaffold can be moved easily.

Further, depending on how the scaffold is installed, a handrail may be required to prevent falling. for that reason,
The configuration in which the handrail support member is provided by utilizing the upper side of the side girder of the ladder member at the top of the scaffold may be added to the above configuration. As such a configuration, for example, the lower end side of the handrail supporting column member is formed into a shape (for example, a rod shape or a cylindrical shape) that can be connected to the upper end side of the scaffolding uppermost side girder in a removable double cylinder shape. Then, the handrail supporting member may be arranged to be erected on the upper end side of the side girder. With this configuration, a fall or a handrail for preventing fall can be provided by providing a rafter or a brace or a fence member between the handrail supporting members. Especially, if the projecting pins are provided in the middle and the upper end of the handrail supporting member, and the horizontal joints can be attached by the pin connecting means between the handrail supporting members standing at the four corners, the simple assembling work can be performed. Handrails are provided in. In such a configuration, since the handrail can be assembled by the upright means and the pin connecting means that can be inserted and removed,
Assembling and disassembling is easier than assembly by bolt connection.

The invention described in claim 2 is the same as claim 1.
In the invention described in (1), the lower end side of the side girder of the ladder member is made to correspond to the rod-shaped or tubular projecting portion provided on the frame, and the rod-shaped or tubular member can be removably connected to this rod-shaped or tubular projecting portion. And the upper end side of the side girder and the lower end side of the side girder of another ladder member are added upwards via a connecting splicing member that can be removably connected to both, and at the same time, the ladder member , Projecting the crossbars from the upper and lower parts of the side girders, and forming the ends of the crossbars into rod-shaped or cylindrical connection parts, and connecting the connection parts of the upper and lower crossbars of the pair of ladder members with the insertable connecting connection member I decided to do it.

Further, the invention according to claim 3 is the invention according to claim 1, in which the side girders of the ladder member are formed into an expandable / contractible double-cylindrical shape, and the braces are interposed between the side girders. Also, it is configured as a double cylinder that can be expanded and contracted. In the present specification, the expression "double cylinder" means not only a state in which the inner cylinder is doubly inserted in the outer cylinder but also a state in which a non-cylindrical member is inserted in the outer cylinder. It shall be.

By forming the side girders of the ladder member so as to correspond to the rod-shaped or tubular projecting portions of the frame and to be removably connectable as described above (for example, connectable in a double cylindrical shape). The ladder member can be erected on the frame by an attachable / detachable attachment means having a simple structure that does not require assembly and dismantling, without significantly changing the structure of the conventional ladder member. In particular, by constructing the side girder in a double-expandable shape, it is possible to adjust the height of the side girder by pulling out the insertion member in the outer cylinder as appropriate. The braces provided between the side girders are also configured to be expandable / contractible, and the length of the braces is adjusted according to the height of the side girders. If the brace having such a configuration is used, the height of the side girder can be adjusted without preparing a fixed-length brace of various lengths.

Further, in the addition of the ladder member, the upper end side of the side girder and the lower end side of another ladder member are detachably connected to both end sides of the intermediate addition member for the addition (for example, a double cylindrical shape). ). If they are connected in a double-cylinder that can be inserted and removed, they can easily be added. In addition, the lateral connection of the side girders of the ladder member is performed by interposing a connecting splicing member between the rod-shaped or cylindrical connecting portions of the upper and lower cross-members of the ladder member to be connected. For example, both end sides of the connecting joint member may be connected to the rod-shaped or cylindrical connecting portions of the respective ladder members in a double cylindrical shape that can be inserted and removed. The scaffolding boards may be bridged between the uppermost crossbars that are connected to each other via the connecting connecting member without leaving a gap.

When a skirting board is used, for example,
A tubular connecting portion is provided on both sides of the side face of the skirting board in the longitudinal direction, and the upper end side of the side girder is inserted so as to form a double tubular shape, so that the side girder can be horizontally inserted and removed. In particular, by using the baseboard, the strength against the horizontal force applied to the scaffolding group can be further increased as compared with the case of using the pipe material or the like. In addition, the tubular connecting portion may be set to have a length such that the tubular connecting portions of different skirting boards adjacent to each other can be simultaneously formed into a double tubular shape. With this configuration, the side spars located at the four corners of the scaffold can be inserted so that the tubular connection portions of the adjacent baseboards are overlapped with each other so that the upper ends of the side spars have a double-cylindrical shape. , The ends of adjacent skirting boards can be connected without any trouble.

In the assembled scaffold having the above structure, the connecting splicing member is constructed so that its length can be adjusted (for example, in the form of a double cylinder), and the connecting width of both ladder members can be adjusted freely. You may do so. In such a case, in particular, a plurality of locking portions may be fixed upright at predetermined intervals so that the locking portions at appropriate intervals can be selected in accordance with the connecting width of the standing ladder members. Alternatively, the locking portion may be configured to be freely movable along the longitudinal direction of the frame by using a slide means or the like so that it can be adjusted to the connecting width of the ladder member. Further, the frame itself may be divided into two in the longitudinal direction, and the length of the frame may be freely adjusted by sliding means. At the same time, the length of the baseboard may be freely adjusted in the left-right direction by sliding means or the like.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) In the prefabricated scaffold of the present embodiment, FIG.
As shown in FIG. 3, two ladder members 20 are respectively erected on the facing frames 11 of the assembly-type base frame 10 so as to be connected to each other via the connecting joint members 21, which is equivalent to the construction of a conventional frame scaffold. The portion to be formed is formed. The base frame 10 of the present embodiment is configured such that a pair of frames 11 are connected to each other at a relative position by a connecting member 12 so that they can be disassembled, and can be appropriately assembled at the lowest position of the scaffold. Frame 1
1 are made to have the same shape. Pillar jacks 13 are provided at both ends of the straight frame 11, and casters 14 with stoppers are detachably provided at the lower ends thereof.

When it is unnecessary to move the assembled scaffold,
It suffices if the scaffolding can be placed on the pedestal jack 13 without providing the assembly structure of the casters 14. Further, along the longitudinal direction of the frame 11, two cylindrical projecting portions 15 are provided vertically upward and separated from each other by a predetermined distance. The cylindrical projecting portion 15 is a connecting member 2 for connection.
In a state in which the two-legged ladder members are connected to each other via 1, the width between the side girders 22 on the outside of the two ladder members 20 is separated, and the two project directly in a straight shape.

In this embodiment, a straight beam member is used as the connecting member 12 used for assembling the base frame 10, and both ends of the beam member are vertically inserted downward.
Is provided. The insertion protrusion 12a is attached to the frame 1
The base frame 10 in which the frame 11 is disposed at the opposing position can be assembled by inserting the double-cylindrical insertable / receivable portion into the cylindrical insert / receptive portion 12b provided at a predetermined distance from the base 1. There is. Other than this, as the connecting member 12, for example, a brace that is interposed in the horizontal direction may be used. Alternatively, both may be used together. Especially, the brace is connected to the connecting member 12
When used as, the rectangular frame surface formed by the base frame 10 is less likely to be deformed due to the rhombus shape.

The ladder member 20 of this embodiment is shown in FIG.
As shown in (a), cross bars 23 are provided at predetermined intervals between the left and right side girders 22. Side girder 22 of ladder member 20
In this embodiment, the height is adjustable.
It is composed of an outer cylinder 22a and an inner cylinder 22b, and an inner cylinder 22b is inserted into the outer cylinder 22a in a double-cylinder shape so as to extend freely. An appropriate number of pin insertion holes are provided in the inner cylinder 22b in the vertical direction at a predetermined pitch. The inner cylinder 22b is pulled out from the outer cylinder 22a by an appropriate length, and the lower end of the outer cylinder 22a is fixed to the inner cylinder 22a.
If the external pin 22c is inserted in the manner shown in FIG. 2B in accordance with the upper position of the pin insertion hole of b, the height of the side girder 22 can be adjusted within the range according to the pitch. When height adjustment is not necessary, for example, when forming in multiple stages as shown in FIG. 3, the inner cylinder 22b may be completely stored in the outer cylinder 22a.

Further, in this embodiment, both the uppermost and lowermost tiers 23 of the ladder member 20 are laterally connected to the outside of the side girders across which the transverse members 23 are passed. Both Yokogi 23
In the present embodiment, is formed in a tubular shape slightly thicker than the other cross bar 23, and is slightly projected to the side of the side girder 22 as it is, and that portion serves as a tubular connecting portion 23a. In this tubular connecting portion 23a, both end sides of the connecting intermediate connecting member 21 are
It is designed to be removably inserted into a double cylinder. The side girder 22 is formed so that one side girder 22 is shorter than the other side girder 22, and is stopped at the position of the two horizontal bars 23 at the uppermost stage and the lowermost stage. Care is taken so that the side girders 22 do not get in the way when handing over the skirting board 30 described later.

In this embodiment, as shown in FIGS. 2 and 4, the connecting connecting member 21 has an outer cylinder 21a having the same diameter as the crosspiece 23 and a substantially same length, and a double cylinder formed from both ends of the outer cylinder 21a. It is composed of an inner cylinder 21b inserted in.
Holding screws 21c for fixing the pull-out length are provided on both ends of the outer cylinder 21a. By screwing, the tip of the screw is strongly pressed against the outer surface of the inner cylinder 21b, and the inner cylinder 21b pulled out by an appropriate length can be pressed and fixed at that position. When connecting the ladder members 20, the inner cylinder 21b stored in the outer cylinder 21a is pulled out to an appropriate length, and the holding screw 21
After fixing with c, the pulled out inner cylinder 21b may be inserted into the cylindrical connecting portion 23a. When not in use, the inner cylinder 21b may be completely stored in the outer cylinder 21a.

In this way, the inner cylinders 21b at both ends of the connecting member 21 for connection are drawn out to appropriate lengths, and both ends are inserted into the cylinder of the cross bar 23 of the ladder member 20 so that both ladders are inserted. If the lower end side of the side girder 22 of the member 20 is removably inserted into the tubular projecting portion 15 of the frame 11, a portion corresponding to the base frame 10 that is built on the opposing frame 11 can be formed. . In this embodiment,
As shown in FIG. 1, an inner cylinder 22b, which is pulled out from the outer cylinder 22a of the side girder 20 by an appropriate length, is inserted into the cylindrical protruding portion 15 of the frame 11. The upper part of the inner cylinder 22b has a drawing length from the outer cylinder 22a determined by the insertion of the outer pin 22c, and the lower end of the inner cylinder 22b is directly inserted into the cylindrical projection 15.

In the present embodiment, the frame 11 is operated as described above.
The braces 40 and 50 are interposed between the side girders 22 of the ladder member 20 erected at the position for reinforcing the scaffolding set. As shown in FIG. 1, the brace 40 includes a projecting pin 15a provided in advance on the inner side surface of the tubular projecting portion 15 of the frame 11 and a side girder 22 inner side surface on which the lowermost rung 23 of the ladder member 20 is passed. A brace 40 is bridged between the projecting pin 24 and the projecting pin 24 provided in the above. In particular, the brace 40 is configured by inserting the inner cylinder 40b into the outer cylinder 40a in a double cylinder shape. The inner cylinder 40b is pulled out from the outer cylinder 40a in accordance with the adjustment height of the side girder 22, the length is fixed by a holding screw 40c, and both ends are locked to the projecting pins 15a and 24, so that the brace 40 is moved to the side. It can be slid across the girders 22. The space between the inner cylinders 22b of the upright side girders 22 is reinforced by brace 40 whose length can be adjusted.

On the other hand, in the present embodiment, the fixed-size brace 50 is also stretched between the side girders 22 composed of the outer cylinder 22a above the inner cylinder 22b of the ladder member 20. Brace 50
The pin insertion holes may be opened at both ends of the pin, and both ends may be attached to the protruding pins 24 in the vicinity where the uppermost and lowermost cross bars 23 of the side girder 22 are passed by pin connection. In this way, between the side girders 22 of the ladder member 20, the braces 40 and 50 are interposed in two steps vertically so that the intersecting surfaces are perpendicular to each other to reinforce the scaffolding set. In this way, a scaffolding group can be formed by further straddling the scaffolding board 60. The scaffold plate 60 is hung across the hooks 61 provided at the four corners between the uppermost cross bars 23 of the ladder members 20 facing the scaffold assembled in the above manner. Scaffolding board 60
The conventional steel structure is used.

In this embodiment, as shown in FIG. 1, two wide scaffold plates 61 are bridged. As shown in FIG. 2C, three scaffolding plates 61 having a narrow width may be bridged over in consideration of the ease of carrying in. Scaffolding board 61
The number of sheets may be appropriately spread depending on the width. Further, in the present embodiment, the scaffolding 30 is assembled by using the skirting board 30 so as to be firm. The skirting board 30 is formed in a rectangular plate shape according to the length between the side girders 22 located at the four corners of the scaffold assembled to the frame 11 in the above manner. At both ends of the wide side surface in the longitudinal direction, cylindrical connecting portions 31 into which the side girders 22 are inserted are provided.

The skirting board 30 is composed of a skirting board 30a whose length is adjusted in the beam direction and a skirting board 30b whose length is adjusted in the beam direction.
It is composed of types. In the present embodiment, the tubular lengths of the tubular connecting portions 31a and 31b of the skirting boards 30a and 30b are set to be half the width of the skirting board 30, respectively. Further, the tubular connecting portion 31 is provided on the upper half side of both ends in the longitudinal direction of the skirting board 30a, and on the lower half side of both ends in the longitudinal direction of the skirting board 30b. Cylindrical connection part 31 of skirting boards 30a, 30b
If the upper ends of the side girders 22 are removably inserted into a double cylinder in a state where a and 31b are vertically stacked, one side girder 22
The baseboards 30a and 30b are arranged adjacent to each other at the same height.

In this manner, among the ladder members 20 constituting the scaffold, between the side girders 22 located at the four corners, the skirting board 30 is provided by horizontally attaching and detaching attachment means so as to surround the periphery of the scaffold. it can. Further, in the above-described configuration, as shown in FIG. 5, since the skirting board 30 is turned to the side of the scaffolding board 60, there is no fear of stepping outward from the scaffolding board 60 even if one slips on the side for work safety. .

Further, in this embodiment, as shown in FIG. 1, a handrail is further provided. However, if the handrail is not particularly required, the above-described configuration in which the handrail assembly is omitted may be omitted. The handrail strut member 70 is composed of an outer cylinder 70a and an inner cylinder 70b in a double-cylinder shape, has substantially the same structure as the side girder 22 of the ladder member 20 described above, and the pull-out length is fixed by an external pin. Then the length can be adjusted. FIG. 3 shows a state in which the inner cylinder 70b is pulled out to an appropriate length. In FIG. 1, the inner cylinder 70b is pulled out slightly downward from the outer cylinder 70a, and the inner cylinder 70b pulled out in that state.
Is inserted inside the cylindrical shape on the upper end side of the side girder 22 provided with the skirting board 30.

As shown in FIG. 6, a projecting pin 71a for mounting the intermediate shaft 71 is provided at a height position midway on the side surface of the outer cylinder 70a of the handrail strut member 70. Pin insertion holes 71b are provided at both ends of the middle shell 71, and the protruding pins 71a are formed.
It can be stopped by inserting. Furthermore, on the upper end side of the handrail support member 70, a projecting pin 72a for vertically mounting the upper casket 72 is provided. The projecting pin 72a is provided with a pin insertion hole 72b on both end sides of the upper sleeve 72.
It can be attached by inserting it into the. In the protruding pin 72a,
A barb 72c is provided so that the upper casing 72 does not easily come off. In this way, the handrail support member 7 having the above configuration
If 0 is erected in a double cylindrical shape that can be inserted and removed, the handrail can be easily provided on the upper ends of the four corner side girders 22 of the scaffold.

In this way, the one-stage scaffold is assembled. Since a little height adjustment can be performed at the side girder 22 portion according to the above-mentioned procedure, a scaffold having a one-step structure may be sufficient depending on the situation of the site. A pair of frames 11, a connecting member 12, a pair of ladder members 20 connected by a connecting member 21 for connecting, and braces 40, 50 for interposing vertical crossing surfaces between the side girders 22 of the ladder member 20. , Side girder 2
A scaffold as shown in FIG. 1 is assembled from a skirting board 30 provided horizontally between 0s, a scaffolding board 60 spanning between the crossbars 23, a handrail support member 70, and the like. The disassembly of the scaffold may be performed by the reverse procedure of the above assembly.

(Embodiment 2) In this embodiment, a case where a ladder member 20 is assembled in multiple stages to assemble a high scaffold will be described. In the present embodiment, as shown in FIG. 3, a case of a two-stage configuration will be described as an example, but even in the case of a multi-stage configuration of three or more stages, the number of stages may be appropriately overlapped by the same procedure. Also in this embodiment, the base frame 10 is assembled in the same manner by the frame 11 and the connecting member 12 having the same configuration as in the first embodiment. Further, the side girders 22 of the ladder member 20 of the first stage stand up with the inner cylinder portion 22b entirely inserted into the cylindrical protruding portion 15 of the frame 11 with the inner cylinder 22b slightly protruding from the inside of the outer cylinder 22a. It is set up. The lateral connection of the two-legged ladder members 20 is carried out in the same manner as in the first embodiment through the connecting joint member 21. In addition, between the side girders 22 of the ladder member 20 which are erected face-to-face,
The projecting pin 24 is used to interpose a fixed-length brace 50 with the intersecting surface vertical.

Further, a scaffolding plate 60 is bridged between the uppermost horizontal members 23 of the ladder members 20 which are erected face-to-face in the same manner as in the first embodiment. In this way, the first-stage scaffold set is assembled. In the present embodiment, as shown in FIG. 3, the skirting board 30 is not provided around the first-stage scaffolding plate 60, but may be provided if necessary. The second stage assembly may be performed by vertically connecting the upper end side of the side girder 21 of the ladder member 20 in the first stage to the lower end side of the side girder 21 of another ladder member 20 with the upper side facing upward. The side spar 22 may be replenished by using a conventionally known connecting pin as a replenishment intermediate joint member, but in the present embodiment, the inner cylinder 22b of the side spar 22 of the upper ladder member 20 is
The lower ladder member 20 is inserted into the upper end of the side girder 22 to be added. The inner cylinder 22b can be used as a replenishment intermediate connection member.

The procedure for connecting the ladder members 20 may be performed in exactly the same manner as in the first embodiment. Between the side girders 22 of the ladder member 20 of the second stage which is erected face-to-face, as in the case of the first stage, the braces 50 are interleaved by using the protruding pins 24. A scaffolding board 60 is bridged between the uppermost cross members 23 of the second-stage ladder member 20 assembled in this manner. Further, also in this embodiment, a skirting board 30 similar to that of the first embodiment is horizontally provided on the upper end side of the side girder 22 of the ladder member 20. In addition, if necessary,
The handrail supporting column members 70 are provided upright at the four corners, and the upper and lower shafts 71, 7
2 may be provided and a handrail may be provided. In this way, a scaffold having a two-stage structure is assembled. When assembling into two or more stages, it is sufficient to repeat the procedure for the required number of stages in the manner of assembling the second stage.

(Third Embodiment) In the third embodiment, a modification of the first and second embodiments will be described. In the above embodiment, the fixed-length frame 11 has been described, but for example, the frame 11 may be divided into two parts in the longitudinal direction, and the two parts may be connected to each other by the sliding means on the center side so that the left-right length can be adjusted. Absent. Further, in the above-described embodiment, the cylindrical protruding portions 15 provided on the frame 11 are protruded at a predetermined interval, but a plurality of them are erected and fixed at predetermined intervals, and are appropriately set according to the connecting width of the ladder member 20. The cylindrical protruding member 15 for standing up the side girder may be selected. In addition, a guide rail may be provided along the longitudinal direction of the frame, and the tubular protruding member 15 may be formed so as to be movable left and right along the guide.

Further, in the above embodiment, the lateral bar 23 for lateral connection of the ladder member 20 is provided with the tubular connecting portion 23a for inserting the connecting intermediate member 21 only on one side. It may be provided outside the. With such a configuration, another ladder member 20 can be connected to both sides of the ladder member 20 to connect two or more legs of the ladder member 20. In combination with the structure of the frame 11, a prefabricated scaffold having a wide and corresponding portion can be constructed. Further, in the above embodiment, one side girder is set shorter than the other side girder, but both side girders may be set to the same length. In such a case, the tubular connecting portion 31 of the skirting board 30 is provided in front of the side surface of the skirting board 30, and
It is sufficient that 0 is provided inside the side girder 20. Further, if the connecting member 21 itself for connecting is made to have a structure such as a double cylinder whose length can be adjusted, the connecting width can be freely changed by a two-legged ladder member.

In particular, when the connecting width is lengthened to form a multistage structure, it is preferable to provide the skirting board 30. From the viewpoint of securing the strength, it may be considered that a configuration in which the baseboard 30 is provided in addition to the side girders located at the four corners of the entire scaffold is required, but as described above, both side girders are set to the same length. If this is done, the skirting board 30 can be provided between a plurality of side girders other than the four corners, and the structure of the lower scaffolding group can be made stronger. Further, although the cylindrical connecting portion 31 of the skirting board 30 is shown to be provided only on both end sides, when the both side girders of the ladder member have the same length, the cylindrical connecting portions 31 are connected at the side girder spacing of the ladder member. If the parts 31 are provided on the side surfaces of the skirting board 30, the respective cylindrical connecting parts 31 can be connected to the side girders of the ladder member in a double cylindrical shape that can be inserted and removed, and the skirting board 30 can be provided. The scaffolding becomes stronger.

Further, in the above embodiment, the baseboard 30 is
There are two types of configurations, a skirting board 30a that matches the length in the direction of the girder and a skirting board 30b that matches the length in the beam direction. If they are connected by a sliding means, the lengths for both can be set with one configuration. In particular, when the ladder member is configured so that the connecting width can be freely set as described in the modification, it is convenient that the length of the skirting board can be changed accordingly. Further, in the above-described embodiment, the side girders of the ladder member 20 have a double-tube configuration in which the height can be adjusted, but a single pipe configuration may be used instead of such a configuration.

Further, in the first and second embodiments, the insertable and detachable mounting means includes the portions formed in the tubular shape so that they can be fitted into each other in the double tubular shape. As long as it can be removed, such a cylindrical portion may be changed to a rod shape. Further, as the attachable / detachable attachment means, another modified example other than the above-mentioned configuration is also conceivable. In short,
A configuration other than that of the present embodiment may be used as long as the insertion / removal means that can be inserted / removed is provided for easy assembly / disassembly. It may be arranged so that it can be installed upright in the frame in a portion other than the side girders so as to be removable.

[0040]

According to the structure of the present invention, the base frame and the portion corresponding to the building are also assembled so that they can be disassembled more compactly than the conventional frame scaffold. In particular, as a structure in which the ladder members can be connected in the lateral direction, the portion corresponding to the building, which tends to be slightly wider, can be disassembled into the constituent members having a narrow width. Further, since the side girders of the ladder member are configured to be adjustable in height and the brace is also configured to be adjustable in length, the ladder can be shortened for easy carrying. Therefore, it can be stored, assembled and disassembled in a smaller space than before, and can be easily transported. For example, scaffolding can be easily assembled in the underground pit. Further, at the time of assembly, by adopting an attachable / detachable mounting means, a pin connecting means, etc., the assembling / disassembling work can be carried out more efficiently and with less labor than in the case where bolt connection is frequently used.

[Brief description of drawings]

FIG. 1 is a side view (a) of the assembled scaffold according to the present embodiment,
And a front view (b).

FIG. 2 is a front view (a) showing a connecting state of the ladder member of the present embodiment, a partial perspective view (b) showing a state when the length is fixed by an external pin, and a state where three scaffold plates are connected. The partial perspective view shown (c).

FIG. 3 is a side view (a) of the assembled scaffold according to the present embodiment,
And a front view (b).

FIG. 4 is an exploded perspective view showing a connecting state of ladder members and a mounting state of a skirting board.

FIG. 5 is a plan view showing how the skirting board is attached.

FIG. 6 is a partially exploded view showing an assembled state of a handrail.

[Explanation of symbols]

 10 Base Frame 11 Frame 12 Connecting Member 15 Cylindrical Projecting Part 20 Ladder Member 21 Connecting Joint Connecting Member 22 Side Girder 23 Cross Bar 23a Cylindrical Connecting Part 30 Baseboard 31 Cylindrical Connecting Part 40 Braces 50 Braces 60 Scaffolding Board

Claims (3)

[Claims] 1. A scaffold of an assembly type, wherein the scaffold has a pair of frames having rod-shaped or cylindrical protruding portions arranged at opposite positions, and is separably connected by a connecting member spanning between the frames. , The base frame of the assembly type provided at the lowest position of the scaffold, and the rod-shaped or cylindrical projecting portion of each frame can be inserted and removed, and the lateral girders can be connected in the lateral direction, and the side Consists of a ladder member that can be added upward at the upper end of the girder, braces that connect the side girders of the ladder members that are installed upright, and a scaffolding board that spans between the transverse members of the ladder member that is installed upright. Prefabricated scaffolding characterized by being. 2. A rod-shaped or tubular shape in which the lower end side of the side girder of the ladder member is made to correspond to the rod-shaped or cylindrical protruding portion provided on the frame and can be removably connected to this rod-shaped or cylindrical protruding portion. The upper side of the side girder and the lower side of the side girder of another ladder member are
The ladder member is added upwards via an add-on intermediate connecting member that can be detachably connected to both of them, and the ladder member has cross-pieces projecting from the upper and lower portions of the side girders, respectively, and the tip of the ladder member is a rod-like or tubular connecting portion. The prefabricated scaffold according to claim 1, wherein the connecting portions of the upper and lower crossbars of the pair of ladder members that are formed are connected by an insertable and removable connecting joint member. 3. The side girders of the ladder member are configured to be expandable / contractible double cylinders, and the braces interposed between the side girders are also expandable / contractible double cylinders. The assembled scaffold according to claim 1.