JP2000064602A - Assembling type scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To build a scaffold simply and within a short time corresponding to the situation of the building site and securely prevent even a small item such a tool from dropping. SOLUTION: Two scaffold boards 20, 20 are suspended in parallel with each other in the width direction between a pair of traverse pipes 16, 16 longitudinally facing a scaffold frame 19. Two engagement pieces are respectively arranged on both widthwise side outer fringes of the scaffold board 20 separately in a longitudinal direction from each other. An engagement hook detachably engaging with respective engaging pieces arranged on the scaffold board 20 is pivoted on the outer fringe on the lower part of a drop prevention member 30 in a freely oscillating manner. The drop prevention member 30 is connected to the upper part of the side fringe of the scaffold board 20 in an erecting style with respect to the scaffold board 20 by means of an engaging actuation of the engaging piece with the engaging hook.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly type scaffold used at construction sites related to civil engineering and construction, and more specifically, an assembly type scaffold capable of preventing a tool or the like from falling to improve safety. It's about scaffolding.

[0002]

2. Description of the Related Art In the field of civil engineering work and construction work, pillars are assembled in advance according to the content and scale of the work to secure a foothold, and then the work is started. The installation of this scaffold provides a safe working environment even at high altitudes, and it can be easily assembled and disassembled, making it indispensable at various construction sites. In a conventional assembly-type scaffold, a plurality of pillars with paving stones are erected at required intervals, and a pipe that is the base of the scaffold board is hung between these pillars, and the scaffold board is placed on the pipes. What is done is generally known.

In the prefabricated scaffold, since there is no member that covers the side of the scaffold plate, tools such as building materials and drivers dropped on the scaffold plate by the worker who are working fall from the side of the scaffold plate. There were times when it happened. Therefore, in accordance with the height of the scaffolding board, by attaching a fall prevention member (referred to as "baseboard" in site terms) of a predetermined height to the stanchion using wires or the like, the articles from the side can be attached. I try to prevent it from falling.

[0004]

However, there is several tens of centimeters between the fall prevention member attached to the pillar and the scaffolding plate.
There is a small gap, and it is possible to prevent large items from falling,
It has not been possible to reliably prevent falling of small articles such as a driver. Moreover, it is pointed out that the work of binding the drop prevention member to the support with a wire is complicated and time-consuming.
Further, since the work of binding the support column and the fall prevention member with the wire relies on the operator, there is a drawback that the binding state varies depending on the skill of the operator. In addition, when changing the mounting position of the fall prevention member to the column or disassembling it, it is unavoidable to remove the multiple wires that bind the two together, and it has been pointed out that it is extremely complicated and time-consuming. It

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks inherent in the above-mentioned conventional techniques, and is proposed in order to suitably solve the drawbacks. It is an object of the present invention to provide a prefabricated scaffolding that can be installed at a facility and can reliably prevent small articles such as tools from falling.

[0006]

[Means for Solving the Problems] In order to overcome the above-mentioned problems and preferably achieve an intended purpose, a prefabricated scaffold according to the present invention is a prefabricated scaffold installed at a site such as civil engineering work and construction work. A scaffolding board detachably mounted on a plurality of pedestals that are erected at the facility position on the site with a required space therebetween, and a plurality of engaging means arranged on the outer edge thereof with a predetermined space therebetween. When,
The lower part of the scaffolding plate is provided with engaged means that engages and disengages with each of the engaging means of the scaffolding plate, and is erected on the side edge of the scaffolding plate under the action of the engaging means and the engaged means And a fall prevention member that is detachably connected.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a prefabricated scaffold according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments.

As shown in FIG. 1, the prefabricated scaffolding 10 according to the embodiment has a horizontally assembled pipe 16 installed between a pair of support pillars 14, 14 which are circular pipes erected on the installation surface at the facility position. The gantry 12 is configured, and two gantry 12, 12
Vertically assembled pipe 18 between each of the columns 14, 14 facing each other in
To construct a basic scaffolding frame 19, and at the construction site, the scaffolding frame 19 is continuously connected to form a scaffolding. As shown in FIG. 2, a plurality of pipe supporting portions 15 (three in the embodiment) are arranged on the column 14 at predetermined intervals in the vertical direction. As shown in FIG. 4, the pipe support portion 15 includes four pipe pieces 1 formed at intervals of 90 degrees in the circumferential direction.
5a, and the pipe pieces 15a, 15a aligned in the longitudinal direction of the scaffolding plate 20 described later and the pipe pieces 15a, 15a aligned in the longitudinal direction of the scaffolding plate 20 are slightly different in height position to form a so-called step difference. is doing. And
The lower pipe pieces 15a, 15a facing each other in the width direction
The pipe wedges 16 formed at both ends of the horizontal pipe 16
a and 16a are detachably engaged with each other, and pipe wedges 18a and 18a formed at both ends of the vertically assembled pipe 18 on the upper pipe pieces 15a and 15a facing each other in the longitudinal direction.
It is designed to be attached and detached freely.

A paving stone 14b serving as a base is disposed at the lower end of the pillar 14 via an expandable jack 14a, and the jacks 14a, 14a are arranged according to the height difference between the installation surfaces of the pair of pillars 14, 14. By adjusting, the height positions of the pipe support portions 15 and 15 can be matched. The number of pipe supports 15 to be formed and the vertical interval can be appropriately set according to various specifications, but the interval between the pipe supports 15 and 15 separated vertically is set to 500 mm as an example. .

In the embodiment, two scaffolding plates 20, 20 are arranged in parallel in the width direction between the horizontally assembled pipes 16, 16 facing each other in the longitudinal direction of the scaffolding frame 19. At both ends in the longitudinal direction of the scaffolding plate 20, as shown in FIG. 3, an L-shaped hook portion 22 and a wedge portion 24 are arranged at predetermined intervals in the width direction.
In addition, the horizontal pipe 16 has a wedge portion 24 of each scaffolding plate 20.
A wedge receiving portion 16b that engages with is provided correspondingly. That is, the hook portion 22 of the scaffolding plate 20 is engaged with the horizontally assembled pipe 16 itself from above, and the wedge portion 24 is engaged with the wedge receiving portion 16b from above, so that the scaffolding plate 20 has a width at the wedge receiving portion 16b. It is bridged with its position regulated in the direction. The number of the wedge receiving portions 16b provided in the horizontally assembled pipe 16 is set according to the number of the scaffolding plates 20, and, for example, three scaffolding plates 20 are arranged in parallel. In this case, three wedge receivers 16b are provided correspondingly.

As shown in FIG. 3, engaging pieces 26, 26 as two engaging means are respectively arranged at the outer edges on both sides in the width direction of the scaffolding plate 20 so as to be spaced apart from each other in the longitudinal direction. There is. As shown in FIG. 7, each engagement piece 26 has an insertion portion 26a that communicates vertically and an engagement hole 26b that is formed on one side wall in the longitudinal direction and that penetrates in a direction that intersects with the insertion portion 26a.
Composed of and. The fall prevention member 30 is detachably connected to the side edge of the scaffolding plate 20 in an upright state via the two engaging pieces 26, 26 arranged at each outer edge. There is. In the case of the embodiment, two scaffolding boards 2 are used.
Since 0 and 20 are bridged in parallel to the scaffolding frame 19 to form a scaffold, the fall prevention member 30 is erected only on one outer edge of the scaffolding plates 20 which is separated in the width direction. Further, the arrangement positions of the two engaging pieces 26, 26 arranged on one outer edge of the scaffold plate 20 in the width direction and the two engaging pieces 26, 26 arranged on the other outer edge of the scaffold plate 20. Is displaced by the required length in the longitudinal direction, and when two scaffolding boards 20, 20 are arranged side by side,
It is configured to prevent the engagement pieces 26, 26 of the opposite outer edges from interfering with each other and widening the facing distance.

At the lower outer edge of the fall prevention member 30,
As shown in FIG. 5, each engagement piece 2 arranged on the scaffolding plate 20.
6, holders 36 are respectively arranged at positions corresponding to 6, and engaging hooks 32 as engaged means are pin 38 on the holder 36.
It is pivotally supported via. Engagement hook 32
Is composed of a locking portion 32a extending downward from the holder 36 to engage with the engaging hole 26a in a disengageable manner, and an operating portion 32b extending upward from the holder 36. And
Locking portion 32a of each engaging hook 32 of the fall prevention member 30
The insertion portion 26a of the corresponding engagement piece 26 of the scaffolding plate 20.
The engaging portion 32a into the engaging hole 26
By engaging with b, the fall prevention member 30 is connected to the scaffolding plate 20 in a positioned state (see FIG. 7). It should be noted that the engagement hook 32 has a structure in which when the locking portion 32 a is inserted into the engagement piece 26, the locking portion 32 a is inserted into the engagement piece 26.
The center of gravity is set so as to oscillate and engage with the engaging hole 26b by its own weight. The locking portion 32a is engaged with the engaging hole 26b.
If the engaging hook 32 is swung in the direction opposite to the direction in which the engaging hook 32 is engaged with the engaging portion 32a, the engaging portion 32a is disengaged from the engaging hole 26b and the engaging portion 32a is engaged. It is configured so that it can be easily removed from 26.

Incidentally, the engagement hook 32 and the engagement piece 26.
The fall prevention member 30 that is vertically connected to the scaffolding plate 20 by means of the above is configured such that the fall prevention members 30 and 30 that are adjacent in the longitudinal direction are connected by a connection member 34 in order to increase stability. As shown in FIGS. 6 (a) and 6 (b), the connecting member 34 includes a fitting portion 34a formed in a substantially U shape, and the fitting portion 34a is provided between the fall prevention members 30 and 30 adjacent to each other. Two fall prevention members 3 that are fitted so as to straddle
It is configured to integrate 0 and 30. Also, the connecting member 3
4 includes a fixing portion 34b that extends outwardly from the fitting portion 34a and can be detachably attached to the column 14, and the fixing portion 3 is fixed to the column 14 located outside the both fall prevention members 30 and 30.
By mounting 4b, the fall prevention members 30, 30 are stabilized.

[0014]

Next, the operation of the assembled scaffold according to the embodiment will be described. When the prefabricated scaffolding 10 is installed, first, the pair of pedestals 12 and 12 are installed on the installation surface with a distance corresponding to the length dimension of the scaffolding plate 20. That is, by adjusting the height of the jack 14a arranged at the lower end of each of the columns 14, as shown in FIG.
In the state where the pipe pieces 15a, 15a of the pipe supporting portions 15, 15 arranged at are aligned in the longitudinal direction and the width direction, the columns 14 are erected vertically to the installation surface. And
The pipe wedges 16a, 16a of the horizontally assembled pipe 16 are attached to the pipe pieces 15a, 15a of the pipe supporting portions 15 at desired height positions of the columns 14, 14 spaced apart in the width direction to form the gantry 12. Then, the pipe wedges 18a of the vertically assembled pipe 18 are attached to the longitudinally opposed pipe pieces 15a, 15a of the pipe supporting portions 15, 15 to which the horizontally assembled pipes 16, 16 of the supporting columns 14, 14 of the pedestals 12, 12 are attached. The scaffolding frame 19 is formed by fastening the and 18a.

Next, the horizontal pipes 16, 16 of the scaffolding frame 19
In the meantime, the two scaffolding plates 20, 20 are bridged in parallel via the hook portion 22 and the wedge portion 24. Then, the fall prevention members 30 are connected to the side edges of the scaffolding plates 20 on the outer side in the width direction in an upright state. That is, as shown in FIG. 7A, the insertion portions 26a of the engagement pieces 26 of the scaffolding plate 20 are inserted.
To the corresponding engagement hook 32 of the fall prevention member 30.
The locking portion 32a of is inserted from above. The locking portion 32a is
It is inserted while being in contact with the inner wall of the engaging piece 26 (see FIG. 7).
(see (b)), when the lower end of the fall prevention member 30 is placed on the side edge of the scaffolding plate 20, the locking portion 32a swings by its own weight to engage the engagement piece 26. Engage with hole 26b
(See FIG. 7 (c)). As a result, the fall prevention member 30 is positioned and connected to the scaffolding plate 20 in an upright state.

Then, in a state where the fall preventing members 30 and 30 standing upright on the side edge portion of the scaffolding plate 20 and adjoining in the longitudinal direction are connected and fixed by the fitting portion 34a of the connecting member 34, By mounting the fixing portion 34b of the connecting member 34 on the support column 14, the assembly of the prefabricated scaffold 10 is completed.

That is, in the assembled scaffold 10 of the embodiment,
Since the fall prevention member 30 is connected to the side edge portion of the scaffolding plate 20 in an upright state, there is no gap between the two members 20, 30 and small articles such as tools dropped by the operator It is possible to reliably prevent the scaffolding plate 20 from falling. Further, since the fall prevention member 30 is automatically engaged and connected to the scaffold plate 20 by inserting the engagement hook 32 into the engagement piece 26, the assembling work can be performed easily and in a short time. Further, even when the fall prevention member 30 is detached, the fall prevention member 30 can be attached to the scaffolding plate 2 simply by swinging the engagement hook 32 in a predetermined direction via the operation portion 32b.
Since it can be removed from 0, complicated work such as removing a plurality of wires is not required, which can contribute to the reduction of the labor of the operator.

In the embodiment, the case where the engaging piece as the engaging means is provided on the scaffolding plate and the engaging hook as the engaged means is provided on the fall prevention member has been described. However, the present invention is not limited to this, and it is possible to adopt a configuration in which the scaffold plate is provided with the engaging hooks as the engaging means and the fall prevention member is provided with the engaging pieces as the engaged means. Further, the structure of the engaging means and the engaged means for connecting the scaffolding plate and the fall prevention member is not limited to the combination of the engaging piece and the engaging hook of the embodiment, and can be engaged and disengageably engaged. In that case, the configuration of the engagement piece and the wedge can be adopted. That is, for example, a wedge which can be inserted / removed from above is provided in a fall prevention member with respect to an engaging piece provided on a scaffolding plate, and the wedge is connected to the engaging piece only by inserting the wedge into the engaging piece. Good. Further, it goes without saying that the relationship between the wedge and the engagement piece may be reversed.

In the embodiment, the two scaffolding plates are bridged in parallel to each other so that the fall prevention member is connected only to one side edge portion in the width direction of each scaffolding plate. When the scaffolding board is bridged over the scaffolding frame, a fall prevention member may be connected to both side edges of the scaffolding board. Further, in the embodiment, the engaging means is arranged on both outer edges of the scaffold plate in the width direction, but when a plurality of scaffold boards are arranged in parallel, the engaging means is arranged only on at least one outer edge. If you have.

[0020]

As described above, according to the prefabricated scaffold according to the present invention, since the fall prevention member is directly connected to the outer edge of the scaffold plate, the scaffold plate and the fall prevention member are provided between the scaffold plate and the fall prevention member. Since no gap is formed, even small articles such as tools can be reliably prevented from falling from the scaffolding plate. Further, since the scaffolding plate and the fall prevention member are connected by the engaging means and the engaged means which can be engaged and disengaged, the assembling and disassembling of the both can be easily performed in a short time, and the work efficiency can be improved. Can improve. Further, unlike the conventional case, since the fall prevention member is not tied to the support by using the wire, the worker can be released from the complicated and time-consuming work, and the connection state does not change depending on the skill level of the worker. It can be connected on the basis of.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a prefabricated scaffold according to an embodiment of the present invention.

FIG. 2 is a schematic front view showing a pedestal constituting the prefabricated scaffold according to the embodiment.

FIG. 3 is a schematic perspective view showing a scaffolding board according to an embodiment.

FIG. 4 is a schematic plan view showing a column according to an embodiment.

FIG. 5 is a schematic side view showing a fall prevention member and a scaffolding plate before connection.

FIG. 6 is a schematic explanatory view showing the fall prevention member, the scaffolding plate, and the connecting member after the connection in a plan view and a side surface.

FIG. 7 is a process diagram showing an engagement process of an engagement hook of a fall prevention member and an engagement piece of a scaffold plate.

[Explanation of symbols]

12 mounts 20 scaffolding boards 26 Engagement piece (engagement means) 26a insertion part 26b Engagement hole 30 Fall prevention member 32 Engagement hook (engaged means) 32a locking part

Claims (3)

[Claims] 1. A prefabricated scaffold installed at a site such as a civil engineering work or a construction work, which can be freely attached to and detached from a plurality of pedestals (12, 12) which are erected upright at a predetermined space at a facility position of the site. A scaffolding plate (20), which is mounted on the outer edge of the scaffolding plate (20) and has a plurality of engaging means (26) spaced apart from each other by a predetermined distance. An engaging means (32) that freely engages is provided in the lower part, and the engaging means (26) and the engaged means (3) are provided at the side edge of the scaffolding plate (20).
2. An assembly-type scaffold characterized by comprising a fall prevention member (30) which is detachably connected in an upright state under engagement with 2). 2. The engaging means (26) of the scaffolding plate (20) has an inserting portion (26a) communicating vertically and an engaging hole (26b) penetrating in a direction intersecting with the inserting portion (26a). ) Is formed, the engaged means (32) of the fall prevention member (30) is pivotally supported by the fall prevention member (30) so as to be swingable, and the engagement means (32) is provided at a lower portion thereof.
Locking part (32a) that can be engaged and disengageably engaged with the engaging hole (26b) of (26)
The engaging portion (32a) of the engaged means (32) inserted from above into the insertion portion (26a) of the engaging means (26) is engaged with the engaging hole (26b). The assembly type scaffold according to claim 1, wherein the fall prevention member (30) is connected to the scaffold plate (20). 3. The position of the center of gravity of the engaged means (32) is determined by inserting the engaging portion (32a) into the inserting portion (26a) of the engaging means (26). The scaffold according to claim 2, wherein the engaged means (32) is set so as to swing by its own weight in the direction in which () engages with the engaging hole (26b).