JP3095491U - Preceding handrail of framework scaffold - Google Patents

Abstract

(57) [Summary] [Problem] Regarding the preceding handrail provided at the top of the framework scaffold,
A handrail for a scaffolding scaffold is provided, which can be easily detached to be attached only to the uppermost step of the scaffolding scaffold, and enables a single worker to perform an attaching work on the scaffolding scaffold. SOLUTION: A horizontal support frame 11, a pair of right and left vertical members 12 on the support frame 11, a horizontal member 13 connecting upper ends of the vertical members 12,
Clamps 14 are provided at both ends of the support frame 11, and in the preceding handrail 10 to be attached to the horizontal rail pipe at the top of the building frame of the framework scaffold by the clamp 14, a handle member 20 is provided below the center of the support frame 11; The lower end protrudes below the horizontal pipe.

Description

[Detailed description of the invention]       [0001]     [Technical field to which the invention belongs]   The present invention is useful for assembling and disassembling framework scaffolds used at construction sites. The present invention relates to a preceding handrail provided at the top of a framed scaffold to prevent a fall accident of an elderly person.       [0002]     [Prior art]       [Patent Document 1] JP-A-2002-21320       [Patent Document 2] Japanese Utility Model Publication No. 62-12027       [0003]   Frame scaffolds used at construction sites, etc. are constructed by connecting two gate-shaped building frames with braces. And a cloth plate placed between the horizontal pipes at the top of the building frame as a unit. Connect the knits vertically and horizontally according to the width and height of the construction site to form a framework scaffold .       [0004]   Therefore, when working on a board other than the top row, The race serves as a safety fence, but falls when standing on the top slab To prevent accidents, a handrail is provided.       [0005]   As such a handrail, Japanese Patent Application Laid-Open No. 2002-21320 discloses a horizontal support frame. A handrail consisting of a frame and a handrail frame slidably mounted on the support frame With both ends of the support frame hooked to the horizontal member (cross pipe) at the top of the building frame And the handrail frame that has been slid upward is used as the support frame and the vertical member (building pipe) of the building frame. What is retained is shown.       [0006]   This handrail is composed of a framed scaffolding unit consisting of a building frame and a cloth board as the upper stage, Next, hook both ends of the support frame of the handrail on the horizontal material at the top of the building frame and fix it. It is configured to be pushed up and then held by a vertical member.       [0007]   In this handrail, once the handrail is attached, it should be attached as it is until disassembly. Attach a new handrail to the upper row. Therefore, when performing all work Handrails are always installed along with braces.       [0008]   Further, Japanese Utility Model Publication No. 62-12027 discloses that a hand at an opening of a stair portion of a framed scaffold is used. Sliders are shown, and a horizontal U-shaped mounting bracket is oriented in the same direction at the lower end on both sides of the main frame of the handrail. And fix this mounting bracket to the horizontal member (lateral pipe) at the top of the frame of the framework scaffold. Are shown.       [0009]     [Problems to be solved by the invention]   In the prior art disclosed in JP-A-2002-21320, a handrail is used. The frame is pushed up by hand, but when pushed up, the center of the handrail frame is Reach to the top. In addition, both lower ends of the handrail frame are below the cloth plate, but the spacing between the It is always 150cm wide, and both lower ends of the handrail frame are held by the vertical members of the building frame. Widely, it is difficult for one worker to push up by holding both lower ends of the handrail frame by hand.       [0010]   Also, once the handrail is installed, it will be installed as it is until disassembly, Although handrails are attached to all framework scaffolding units, it is safe, but that many Providing handrails is enormously expensive.       [0011]   Therefore, attach this handrail only to the top row where the brace is not installed. It is conceivable that even if you try to remove it to attach to the upper stage, both lower ends of the handrail frame Is held by the vertical members of the lower frame, so once you go down to the lower Otherwise, it cannot be mounted on the upper stage.       [0012]   On the other hand, in the prior art disclosed in Japanese Utility Model Publication No. 62-12027, Since it is to be installed in the stairway opening of the framework scaffold, the steps for attaching handrails are completed. After finishing, you can work from the cloth board of the step or from the stairs, so it is easy There is no consideration for mounting work from the bottom.       [0013]   Therefore, in the present invention, it is easy to remove to attach only to the top stage of the framework scaffold. In this way, the leading handrail of the framed scaffold was The purpose is to provide.       [0014]     [Means for Solving the Problems]   The leading handrail of the framework scaffold of the present invention is a horizontal support frame 11 and a pair of left and right on the support frame 11. A vertical member 12, a horizontal member 13 connecting the upper ends of the vertical members 12, and clamps 14 at both ends of the support frame 11. And attach it to the horizontal pipe 2b at the top of the frame 2 of the framework scaffold 1 with the clamp 14 In the handrail 10, a handle member 20 is provided below the center of the support frame 11, and the handle member 20 is The lower end protrudes below the horizontal rail pipe 2b.       [0015]     [Embodiment of the invention]   In the present invention, clamps 14 are provided at both ends of the support frame 11, and the clamps 14 Since it is attached to the crosspiece pipe 2b at the top of the building frame 2, the leading handrail 10 is currently attached. The clamp 14 can be removed from the current stage.       [0016]   Also, a handle member 20 is provided below the center of the support frame 11, and the lower end of the handle member 20 is horizontally One worker grasps the handle member 20 by hand because it projects below the crosspiece pipe 2b. The clamp 14 can be lifted and temporarily fixed to the clamp 14 while holding the handle member 20 with one hand.       [0017]     【Example】   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.       [0018]   FIG. 1 shows a leading handrail 10 attached to a framework scaffold 1. The frame 2 in the shape of a gate is erected in parallel, and the frame 2 is connected by a brace 4, and The cloth plate 3 is placed between the tops of the building frames 2 to serve as a foothold for an operator.       [0019]   The building frame 2 includes a pair of building pipes 2a parallel to the vertical direction and a top of the building pipe 2a. A horizontal cross pipe 2b is provided to connect them. The interval between the building frames 2 is 15 in the embodiment. 0 cm.       [0020]   The preceding handrail 10 includes a support frame 11 which is a horizontal circular tube located below and a A pair of left and right vertical members 12 provided at both ends of the vertical member 12 and a horizontal member 13 connecting the upper ends of the vertical members 12. Is provided. The vertical member 12 and the horizontal member 13 are formed integrally by bending a round tube, The end is welded to the support frame 11. The vertical member is located between the support frame 11 and the horizontal member 13. An intermediate horizontal member 15 connecting between the 12 is provided.       [0021]   Clamps 14 are provided at both ends of the support frame 11, and the clamps 14 Attached to the horizontal pipe 2b.       [0022]   The clamp 14 is mounted so as to open downward, and by tightening the screw It is firmly fixed to the horizontal beam pipe 2b.       [0023]   A U-shaped handle member 20 is provided below the center of the support frame 11.       [0024]   The handle member 20 includes a pair of left and right handle vertical members 22 and a handle connecting the lower end of the handle vertical member 22. A hand level member 21 is provided. Vertical handle 22 and horizontal handle 21 are formed by bending a round tube Then, both upper ends of the handle vertical member 22 are welded to the support frame 11.       [0025]   When the preceding handrail 10 is attached, the handle horizontal member 21 as the lower end of the handle member 20 is It protrudes below the horizontal cross pipe 2b of the building frame 2. In this embodiment, the horizontal handle 21 is It protrudes about 20 cm below the pipe 2b, and the height from the lower cloth plate 3 to the handle horizontal member 21 The length was about 155 cm.       [0026]   Next, the assembling of the framework scaffold 1 and the mounting and moving method of the preceding handrail 10 will be described. I do.       [0027]   In assembling the framework scaffolding 1, the first stage sequentially includes the number of building frames 2 corresponding to the required width. Next, the building 2 is connected by the brace 4.       [0028]   By supporting the handle member 20 provided on the preceding handrail 10, the brace 4 of the framework scaffold 1 Lift from the side up to the crosspiece pipe 2b and clamp with one hand holding the handle member 20 14 is temporarily fixed to the crosspiece pipe 2b. When the clamp 14 is temporarily fixed, the leading handrail 10 falls down Since there is no fear, fix each clamp 14 firmly with both hands.       [0029]   At this time, a handle member 20 is provided below the center of the support frame 11, and a lower end of the handle member 20 is provided. Protrudes below the horizontal pipe 2b, and one worker grips and holds the handle member 20. Since the clamp 14 can be temporarily fixed while holding the handle member 20 with one hand, The work of attaching the slide 10 to the upper stage can be performed by one worker, and labor costs are reduced.       [0030]   The clamp 14 of the preceding handrail 10 is fixed to the horizontal pipe 2b of the adjacent building frame 2 sequentially. In the adjacent preceding handrail 10, the clamp 14 is attached to the same horizontal rail pipe 2b. And alternately attached to the side near and far from the building.       [0031]   Next, the fabric board 3 is placed between the tops of the building frames 2, and then the framed scaffold 1 of the second stage is similarly placed. Assemble to       [0032]   To attach the preceding handrail 10 to the third step, the operator must step Loosen the clamp 14 and remove it. Lift and secure.       [0033]   At this time, clamps 14 are provided at both ends of the support frame 11 and the clamps 14 are used to construct the framework scaffold 1. Attach to the horizontal pipe 2b at the top of the frame 2 and check if the stage where the preceding handrail 10 is currently attached Since the clamp 14 can be removed, the single handrail It can be installed easily, reducing labor costs.       [0034]   The same procedure as described above is repeated to form the framework scaffold 1 upward. Also In order to disassemble the framework scaffold 1, the above may be repeated in the reverse order.       [0035]   In the above embodiment, the handle member 20 is provided in a U shape below the center of the support frame 11. The handle member 20 has various shapes such as a U-shape with an upward opening and an inverted T-shape. It may be deformed.       [0036]     [Effect of the invention]   According to the present invention, clamps are provided at both ends of the support frame, and the frame of the framework scaffold is clamped with the clamps. Attach it to the horizontal pipe at the top. The handrail can be removed, so one worker can remove and attach the leading handrail. And labor costs are reduced.       [0037]   In addition, a handle member is provided below the center of the support frame, and the lower end of the handle member is connected to the horizontal rail pie. Protruding downward from the handle, one worker grips the handle member with his hand and lifts it with one hand. Since the clamp can be temporarily fixed while holding the handle member, the leading handrail is attached to the upper stage Work can be performed by one worker, and labor costs can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing one unit according to an embodiment of a leading handrail of a framework scaffold. FIG. 2 is a side view of FIG. FIG. 3 is a plan view of FIG. 1; FIG. 4 is a view showing only a preceding handrail of FIG. 1; FIG. 5 is a diagram showing only a preceding handrail of FIG. 2; FIG. 6 is a partially enlarged view of FIG. 1 with a part cut away. FIG. 7 is a view in which the framework scaffolds of FIG. 1 are laterally connected. FIG. 8 is a diagram in which the framework scaffolds of FIG. 2 are laterally connected. 9 is a view in which the framework scaffolds of FIG. 3 are laterally connected. [Description of Signs] 1 Frame scaffold 2 Building frame 2b Cross beam pipe 10 Preceding handrail 11 Support frame 12 Vertical member 13 Horizontal member 14 Clamp 20 Handle member

Claims (1)

[Claim 1] A horizontal support frame, a pair of right and left vertical members on the support frame, a horizontal member connecting the upper ends of the vertical members, and clamps provided at both ends of the support frame. In the preceding handrail attached to the horizontal rail pipe at the top of the frame of the framework scaffold, a handle member is provided below the center of the support frame, and the lower end of the handle member protrudes downward from the horizontal rail pipe.