JP2003193676A - Mounting method of handrail in prefabricated scaffolding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting method of a handrail capable of being easily and smoothly mounted to a building frame comprised of an erection material and a ledger in a detachable manner and being freely positioned without being restricted to an installation space. <P>SOLUTION: In a prefabricated scaffolding erecting a plurality of building frames comprised of the erection material and the ledger in the horizontal direction, erecting scaffolding boards between the horizontal directions, constituting scaffolding frames by erecting the handrail between the building materials adjacent in the horizontal direction and formed by stageably combining a plurality of sets of scaffolding frames in the vertical direction, the handrail includes a pair of longitudinal struts opposed to each other in the horizontal direction, a lateral handrail frame erected between the struts in a rotatable manner and a pair of up and down first and second mounting members provided downward of the struts, it comprises a process lifting one strut while expanding the handrail frame on the lower stage scaffolding board, a process mounting the strut to one building material through the first and second mounting members, a process lifting the other strut while contracting the handrail on the lower stage scaffolding board and a process mounting the strut to the other building material through the first and second mounting members. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a handrail to a scaffolding device used as a scaffolding device or a shoring used in a construction site or a civil engineering work site, and more particularly, to a prior art method. The present invention relates to a method for attaching a handrail suitable for use as a handrail. 2. Description of the Related Art Generally, a frame scaffold used as a scaffolding device or a shoring is installed in a building construction site or a civil engineering work site. [0003] In this framed scaffold, a plurality of building frames composed of building materials and cross members are erected in the horizontal direction, a scaffold plate is erected between adjacent cross members, and a vertical column and a horizontal handrail frame are similarly provided between the building materials. Or a plurality of sets of scaffolding frames on which a handrail made of e.g. In this case, as a framework scaffold using a handrail as a connecting body between building materials, for example, Japanese Patent Application No. 7-27940.
No. 2 has been developed. [0005] The handrail includes vertical rods on both sides, a horizontal handrail rod connecting the upper ends of the two vertical rods, a horizontal handrail rod connecting the middle of the two vertical rods, and an attachment provided at the upper and lower positions of the vertical rods. A metal fitting is integrally formed, and the handrail is connected to a building material via a mounting metal. [0006] According to the above-mentioned conventional scaffold, a handrail is provided between building materials corresponding to the scaffold plate, so that safety is ensured. There is a problem. First, since both vertical rods and the upper and lower handrail rods are integrally formed, the weight is heavy, and it is difficult to install the handrail between building materials. It may not be possible, and the workability of attaching and detaching will be significantly reduced. Second, the handrail itself becomes large and bulky, so that it is inconvenient to transport and store it, and the storage space is limited. Third, when a large handrail is integrally attached to the building material after the building material has been assembled, the handrail cannot be turned in various directions because of the space between the building materials, and the handrail is attached to the building material. Is difficult and cumbersome. Accordingly, an object of the present invention is to provide a method of attaching a handrail that can be easily and smoothly attached to or detached from a building frame composed of a building material and a cross member, and that can be freely aligned without being restricted by an installation space. It is to provide. [0011] In order to achieve the above object, the means of the handrail mounting method of the present invention is to stand a plurality of building frames composed of building materials and cross members in the horizontal direction, A scaffold plate is erected between materials, a handrail is erected between building materials adjacent in the horizontal direction to form a scaffold frame, and a plurality of such scaffold frames are vertically set in a framed scaffold. A pair of vertical support members facing each other, a horizontal handrail frame rotatably installed between the support members, and a pair of upper and lower first and second mounting members provided above and below each support member, and a lower scaffold is provided. A step of lifting one of the columns while extending the handrail frame on the board, a step of attaching the columns to one of the building materials via the first and second mounting members, and shortening the handrail on the lower scaffold board. Lifting the other support, and connecting the support to the other via the first and second mounting members. And attaching to the other building material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1, 2 and 3, the present invention relates to a building material 1 and a building material 1. This is a method of attaching a handrail for attaching a handrail 4 to a building frame 3 composed of the joined horizontal members 2. As shown in FIG. 3, the handrail 4 is mounted on the uppermost part of the building frame 3 as a pre-replaceable handrail, but it can also be used as a fixed handrail after it is mounted on the building frame 3. . When the handrail 4 is used as a preceding handrail, as shown in FIG. 3, an operator attaches the handrail 4 on a scaffold P laid on the horizontal member 2 in the lower building frame 3. Next, an upper scaffold plate P is erected on the upper cross member 2, and an upper frame 3 is assembled on the scaffold P while safety is secured by a handrail 4. BL and the like are installed, and other fixed handrails are also attached. When this operation is completed, the handrail 4 is removed, and the handrail 4 is assembled on the upper scaffold P again to the upper-side building frame 3 again. That is, the handrails 4 are rearranged and used one after another. Note that the lower building frame 3 is attached to the lower building frame 3.
When connecting (not shown), the upper and lower vertical members 1, 1 are connected to each other. In this case, as shown in FIGS. 3 and 6, the spacer 12 and the stopper 13 or 33 are provided on the upper part of the lower vertical member 1.
The upper vertical member 1 is inserted into the spacer 12, and then the spacer 12 and the upper vertical member 1 are connected via the stopper 13 or 33 to prevent the spacer 12 from coming off. The stopper 13 is formed of a pin biased by a spring, and the other stopper 33 is a rotary stopper having a handle or the like. Various types of stoppers 13, 33, etc. are used by various manufacturers. When assembling the preceding handrail to the building frame 3 as described above, these stoppers 13, 33, etc. The handrail 4 of the present invention can be mounted without interfering with the stopper 13 or the like, or can be removed and rearranged upward, while the handrail may not be attached due to interference. is there. Hereinafter, the method for attaching a handrail according to the present invention will be described in detail. The first and second attaching devices used in the method for attaching a handrail according to the present invention include brackets B and C. is there. The bracket B is shown in FIGS. 5, 6A and 6B.
As shown in (C), a horizontal frame main body 5 having a base connected to a support, a support frame 6 continuously connected to the frame main body 5 at right angles, an outer end of the frame main body 5 and an outer end of the support frame 6 Locking frame 7 connected vertically in the direction
It consists of Further, in the vicinity of the corner where the frame body 5 and the support frame 6 intersect, the groove-shaped notches 8, 9 opened outward in the lateral direction of the frame body 5 and the support frame 6, respectively. And the locking frame 7
Is provided with a curved locking groove 10 in the lower part of the groove. Although the frame body 5 and the support frame 6 may be formed by a single plate, in the present embodiment, as shown in FIG. 6, the frame body 5 and the support frame 6 are horizontally integrated. The upper plate 5b is continuously provided, the upper plate 5b is provided with groove-shaped notches 8 and 9 which are opened outward, and the lower plate 5b forms a curved support surface which is opened outward. As shown in FIG. 2, the handrail 4 includes a pair of vertical supports 14, 14; parallel and extendable handrail frames 16; It is composed of a connecting member 17 rotatably installed between the support members 16, 16, a middle bracket B provided on the column 14, and a bracket C provided below the column 14. As shown in FIGS. 9 and 10, the handrail frame 16 comprises an outer tube a and an inner tube b which is inserted into the outer tube a so as to be extendable and contractible. A pin d provided in the inner tube b is movably inserted into the inner tube b. Outer tube a and inner tube b
Each of the ends has flat mounting pieces e and f and mounting pieces e and f
Are provided. The handrail frame 16 is detachably connected to the support 14 via a mounting bracket 20 shown in FIGS. As shown in FIGS. 4 and 11, the mounting bracket 20 includes a vertical cylindrical guide 21 provided on the column 14, a guide rod 22 projecting horizontally from the cylindrical guide 21, and a cylindrical guide 21. And holes 23, 24 formed in the guide rod 22 in the vertical direction, and a stop pin 25 inserted into the holes 23, 24 so as to be vertically movable. The handrail frame 16 is attached to the guide rod 22 with the mounting holes g at both ends in a state where the stopper pin 25 is raised.
Into the hole 24, and then pull down the locking pin 25 to
Insert Thus, the handrail frame 18 is prevented from coming off by the stopper pin 25 while being inserted into the guide rod 22. As shown in FIGS. 11 and 12, a rope R used as a master rope or another handrail frame may be inserted through the mounting bracket 20. As shown in FIGS. 7 and 8, a bracket C provided below the column 14 is integrally connected to a support piece 26 having a base end fixed to the column 14 and the support piece 26. It comprises a hook 27, a holding groove 28 formed in the hook 27, a guide 29 provided on the support piece 26, and a wedge 30 inserted into the guide 29. The hook 27 is hooked on the vertical member 1 through the holding groove 28, and the hook 30 is driven into the holding member 28.
And the wedge 30 sandwich the vertical member 1, and the lower part of the column 14 is held by a bracket C. Next, the process of attaching and detaching the handrail 4 to and from the building frame 3 will be described. As described above, first of all, on the lower scaffold P, the support pillar 14 is attached to the intersection of the vertical member 1 and the horizontal member 2 with a bracket. Install via B. In this case, the frame body 5, the support frame 6 and the locking frame 7 are made to approach the vertical member 1 and the horizontal member 2 while being inclined from the horizontal direction of the vertical member 1.
The locking frame 7 is pulled up in the horizontal direction while the
The bracket B is engaged with the cross member 2 through the center 0 to level the entire bracket B. At this time, even if the vertical member 1 has the stopper 13 or 33, the frame body 5 and the support frame 6 are bent at right angles to form an L-shape. The frame body 5 and the support frame 6 do not interfere with the stopper 13 or 33. Further, when the frame body 5 and the support frame 6 are pulled up in the horizontal direction while the locking frame 7 is engaged with the cross member 2, the pin-shaped stopper 13 or the handle-type stopper 33 is moved outward. Intrusion into the open groove-shaped notches 8, 9 and interference with the frame body 5 and the support frame 6 are prevented. As described above, the support 14 is provided via the bracket B.
And the lower column C is connected to the longitudinal member 1 to fix the column 14. In the above case, the support surface 11 of the lower plate 5b engages with the outer surface of the longitudinal member 1. After the column 14 is erected, the handrail frame 16 is mounted and the handrail 4 is disposed above. The safety rail is used to assemble the building frame 3 further upward while securing safety. Perform mounting work. Further, after the work of assembling the upper building frame 3 is completed, the handrail frame 16 is removed, and the support 14 is removed by a process reverse to the above-described order. Use as The above-mentioned strut 14 is used not only as a handrail but also as a master rope strut alone, and its structure is the same as that described above. That is, as shown in FIGS. 13 and 14, a retaining ring 40 of a type is provided at the upper end of the supporting column 14, and a rope 41 as a master rope is inserted into the retaining ring 40. Is lifted at the same time, the rope 41 is erected between the columns 14. The support 14 may be attached to the building material 1 via an attachment device comprising a shoe 42 and a wedge 43 as shown in FIG. According to the present invention, the following effects can be obtained. 1) The handrail frame can be lifted up by following the vertical columns one by one, so that the handrail can be easily attached and the speed can be increased. 2) When one pillar is lifted, the weight is lighter than the weight of the entire handrail, so that the attachment / detachment work becomes easy,
The burden on workers is reduced. 3) Since the handrail frame is flexible, even if the space between the building materials is narrow, it is not restricted by the space, and the entire handrail can be positioned and positioned between the building materials.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a framework scaffold with a handrail attached. FIG. 2 is a partially enlarged front view of FIG. FIG. 3 is an enlarged side view of FIG. 1; FIG. 4 is an enlarged side view of a handrail. FIG. 5 is an enlarged side view of the bracket. FIG. 6A is a plan view of a bracket. (B) It is a rear view of a bracket. (C) It is a cross-sectional plan view of a bracket. FIG. 7 is an enlarged plan view of another bracket. FIG. 8 is a side view of FIG. 7; FIG. 9 is a front view of a handrail. FIG. 10 is a partially enlarged front view of FIG. 9; FIG. 11 is an enlarged side view of a handrail mounting bracket. FIG. 12 is a front view of FIG. 11; FIG. 13 is a front view of a framework scaffold according to another embodiment. 14 is a partially enlarged front view of FIG. FIG. 15 is a side view of a handrail support according to another embodiment. [Description of Signs] 1 Building material 2 Horizontal material 3 Building frame P Scaffolding plate 4 Handrail 14 Vertical support 16 Handrail frame B Bracket as first mounting member C Bracket as second mounting member

Claims (1)

[Claim 1] A plurality of building frames composed of building materials and cross members are erected in the horizontal direction, scaffolding plates are erected between the respective horizontal directions, and handrails are erected between the adjacent building materials in the horizontal direction. A scaffolding frame, and in a framed scaffold composed of a plurality of such scaffolding frames arranged vertically, a handrail is provided with a pair of vertical struts opposing each other in a horizontal direction, and a horizontal rotatably mounted between the struts. A step of lifting one of the posts while extending the handrail frame on the lower scaffold plate, comprising a direction handrail frame and a pair of upper and lower first and second mounting members provided below each of the posts; Attaching to the other building material via the first and second attachment members, lifting the other support while shortening the handrail on the lower scaffold, and attaching the support to the first and second attachment members. Attaching a handrail to the other building material through the method.