JP2004300748A - Handrail for scaffold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary handrail for a scaffold, which is rame-shaped and which can be simply and reliably fitted to a scaffold. <P>SOLUTION: A handrail body 3 is composed of movable locking units 4 mounted on both ends of the upper part, and a pair of locking units 5 mounted on upper and lower sides adjacent to both ends of the lower part, and it is characterised in that the movable locking bodies 4 are respectively composed of a movable locking unit body 40 for fixing the handrail body and a movable locking arm 43 inserted in the forward end of the body 40 to rotate in the vertical direction and fixing the upper end of a rotating shaft 41 lifted upward until a stop part 42 at the lower end thereof abuts on the movable locking unit body 40, and the paired locking units 5 are simultaneously locked on fitting members 6 mounted on a vertical frame 1, and then inserted in a locking hole 70 of a fitting member 7 mounted on the upper part of the vertical frame 1 while the lower end at the tip of the movable locking arm 43 is lifted upward around the rotating shaft 41. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a handrail for a temporary scaffold used for a temporary scaffold.
[0002]
[Prior art]
Conventionally, when assembling a frame scaffold, first, building frames are laid in parallel, then a scaffold plate is erected at the upper end between the building frames, cross braces are attached between the building frames, and a temporary scaffold is installed. Strength has been increased. Next, get on the scaffolding board and move on to assembling the frame above. Then, a plurality of scaffolds are completed at predetermined positions between the building frames in the same manner as described above.
At this time, when assembling the scaffold, dismantling the scaffold, and further performing the work using the scaffold, the cross brace provided on the non-work side of the scaffold plate functions as a kind of handrail to prevent falls. are doing.
However, in this crossing, the vicinity of the intersection is located at an appropriate position, but in other cases, it is common to complete the framework scaffold necessarily provided with the scaffold with sufficient strength.
Therefore, there are various techniques including a technique of providing handrails at the cross bracing (Patent Document 1 and others) and a technique of providing a rod-shaped handrail connecting between building frames (Patent Document 2). Exists. As a technique for increasing the strength of the handrail and obtaining more safety such as an assembling work, for example, a technique has been proposed in which a handrail portion is formed as a handrail frame and this is fixed to a building frame (Patent Document 3). .
[0003]
[Patent Document 1]
JP 2000-328774 A [Patent Document 2]
JP-A-2002-004569 [Patent Document 3]
Japanese Patent Application Laid-Open No. 08-049494
[Problems to be solved by the invention]
However, in the technique in which a handrail is provided on the crossed brace such as the conventional Patent Document 1, the crossed brace is designed to obtain the strength of the scaffold itself, and is not necessarily sufficient as a handrail. It does not provide strength.
Further, in the case where the connection is made between the building frames simply by a rod-shaped handrail, when an operator grasps the handrail in an emergency, a large force is applied to the handrail in a downward direction. For this reason, a great deal of stress is applied to the connection portion with the building frame, so that the connection portion needs to be devised, and it is necessary to provide a plurality of rod-shaped handrails, which poses a problem in workability.
Furthermore, as shown in Patent Document 3, the technique of forming a handrail portion as a handrail frame and fixing it to a building frame has an advantage that workability is improved.
However, in the case of a frame-shaped handrail, if the connection portion is a plurality of connection portions on one side, if the building frame or the frame-shaped handrail is deformed, the connection portion often cannot be properly connected. Patent Document 3 discloses a configuration in which two pairs of grips and a pair of locking pins are used for fixing.
An object of the present invention is to provide a handrail for temporary scaffolding, which is a frame-shaped handrail, in which the work of attaching the handrail is simple and reliable.
[0005]
[Means for Solving the Problems]
The present invention provides a handrail for a temporary scaffold provided on a side of the scaffolding plate 2 for passing a scaffolding plate 2 between building frames 1 and sequentially assembling the scaffolding plate 2 to prevent a worker from falling down. The handrail body 3 provided on the side is a frame body having a shape capable of preventing a person from falling down. The movable locking body 4 comprises a pair of provided locking bodies 5, and the movable locking body 4 is vertically rotated by a movable locking body 40 for fixing the handrail body and a distal end portion of the movable locking body 40. A movable locking arm 43 fixed to the upper end of a rotating shaft 41 that can be inserted therethrough and lifted up until a retaining portion 42 provided at the lower end abuts on the movable locking body 40. The stop body 5 is simultaneously locked to the mounting member 6 provided on the building frame 1, and then the mounting member 7 The stop hole 70, characterized in that the lifting can be inserted while rotating upward the tip lower end of the movable latch arm 43 as the pivot axis 41 centered.
[0006]
The present invention is configured as described above, and the handrails for the temporary scaffold are attached to the lower side of the handrail main body 3 after the scaffolding plates 2 are passed between the building frames 1 and sequentially assembled upward. The locking body 5 functions to lock simultaneously into the locking hole 60 of the mounting member 6 provided in the building frame 1. At this time, the locking members 5 are formed in substantially the same shape of the pair, and the locking members 5 of the pair are provided relatively close to each other. Can be done.
Since the two handrails 5 are locked to one of the building frames 1, the handrail body is held in a substantially stable state, and the work of locking the movable locking member 4 described later can be easily performed. .
Next, the movable locking arm 43 of the movable locking body 4 provided at both upper ends of the handrail body is rotated while lifting upward about the retaining portion 42, and the lower end of the distal end of the movable locking arm 43 is locked. Insert into hole 60.
At this time, the movable locking arm 43 of the movable locking body 4 is rotatable by the retaining portion 42, and there is room in the vertical direction, so that the movable locking arm 43 can be easily engaged even if the position with the locking hole 70 is slightly shifted. It can be inserted into the stop hole 70, and even if the building frame 1 or the entire scaffold plate 2 is slightly deformed, the locking can be reliably performed.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
A handrail for scaffolding according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory view of a scaffolding handrail according to the present invention, FIG. 2 is an enlarged sectional view showing a locked state of the scaffolding handrail according to the present invention, and FIGS. FIG. 5 is a perspective view showing a state in which the movable locking body of the present invention is locked by the mounting member.
The handrail for scaffolding according to the present invention passes the scaffolding plate 2 between the building frames 1 and assembles the scaffolding plate sequentially upward, and is provided on the side of the scaffolding plate 2 to prevent a worker from falling. Here, the handrail main body 3 is arranged such that the building frame 1 is close to a frame body capable of preventing a person from falling down, a movable locking member 4 provided on an upper side of the handrail main body 3, and a lower end. And a pair of locking members 5 provided above and below.
[0008]
The handrail main body 3 is formed in a frame shape formed by a suitable means such as a welding member, a connecting member, or the like from a pipe material, a column member, or the like made of a strong metal such as iron, aluminum, or an aluminum alloy. In order to prevent the operator from falling down, a bar or a protective net is provided inside the frame at appropriate intervals. In the embodiment, the handrail main body 3 has three vertical rods 30 and four horizontal rods 31 joined together by a connecting member 32 as a whole. Fixing fixtures 33 are provided outwardly of the connecting members 32 at both upper ends of the handrail body, and fix the movable locking members 4 described later.
[0009]
Next, the movable locking body 4 fixed to the handrail body 3 at both upper ends will be described.
The movable locking body 4 has a cylindrical shape through which the fixture mounting body 33 can be inserted at the base end side of the movable locking body main body 40, and a distal end provided with an insertion hole 44 through which a rotation shaft 41 described later is inserted. The lower end of the rotation shaft 41 is provided with a retaining portion 42 and functions as a stopper for preventing the rotation shaft 41 from coming out of the insertion hole 44 when the rotation shaft 41 moves upward in the insertion hole 44.
Further, the upper end of the rotating shaft 41 is, for example, threaded, and is screwed and fixed to the lower surface on the base end side of the movable locking arm 43 described later, so that the movable locking arm 43 can be rotated about the rotating shaft 41. In addition, the movable locking member main body 40 can be moved up and down. When the movable locking arm 43 is rotated forward, the movable locking arm 43 can be locked in the locking hole 70 of the mounting member 7 fixed to the building frame 1.
The insertion hole 44 is preferably formed to have a diameter slightly larger than the rotation shaft 41 in order to easily insert and lock the movable locking arm 43 into the locking hole 70.
In the figure, reference numeral 45 denotes a fixing bolt and nut for fixing the movable locking body 40 to the fixture mounting body 33.
[0010]
Next, the locking body 5 fixed to both lower ends of the handrail body will be described.
For example, as shown in FIG. 5, the locking body 5 is provided with a fixture mounting body 34 at a lower end of the handrail body in a direction outside the connecting material 32, and a connecting material is provided directly above the fixing tool mounting body 34. Fixing fixtures 36 are respectively provided via 35, and the fixing members 5 are fixed to the fixture attaching bodies 34, 36, respectively. And, it can be locked in the locking hole 60 of the mounting member 6 fixed to the building frame 1.
The movable locking member 4, the locking member 5, the mounting member 6, and the mounting member 7 are made of a strong metal such as an aluminum alloy, for example, like the scaffold plate 2.
[0011]
The present invention is configured as described above, and the handrail mounting of the temporary scaffold is performed by passing the scaffold plate 2 between the building frames 1 and sequentially assembling them upward, and then the pair of locking members 5 are provided on the building frame 1. At the same time in the locking hole 60 of the mounting member 6. At this time, the locking body 5 is formed in substantially the same shape as the pair, and the locking body 5 can be securely locked to the mounting member 6 provided on the upper part of the building frame 1. That is, even if the building frame 1 or the entire scaffold plate 2 is repeatedly used and slightly deformed, the locking members 5 of the pair are provided relatively close to each other, so that the locking at these two points is almost certainly performed. You can do it.
Then, in order to lock one of the building frames 1 with two locking members 5, two ends of the handrail main body 3 are locked to the building frames 1 located on both sides. The body is held in a substantially stable state.
[0012]
Next, the movable locking arm 43 of the movable locking member 4 provided at both upper ends of the scaffold plate 2 is rotated while being lifted upward about the rotation shaft 41, and the lower end of the movable locking arm 43 is engaged. Insert into the stop hole 70.
At this time, the movable locking arm 43 of the movable locking member 4 allows the rotation shaft 41 to rotate within the locking hole 70 with a margin, and has room in the up-down direction, the front-rear direction, and the left-right direction. Therefore, even if the position with the locking hole 70 is slightly displaced, it can be easily inserted into the locking hole 70, and the locking is reliably performed even when the building frame 1 or the entire scaffold plate 2 is slightly deformed. I can do it.
[0013]
【The invention's effect】
The handrail for scaffolding of the present invention can be easily attached by adopting two simple types of locking portions. In particular, since the lower side of the locking body locks the handrail for the scaffold in a stable state, the subsequent locking of the movable locking body can be performed safely and reliably, greatly improving work efficiency. Can be improved. Further, the present invention has a simple structure, and has an excellent effect if it can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a handrail for scaffolding according to the present invention.
FIG. 2 is an enlarged cross-sectional view showing a locked state of the scaffolding handrail according to the present invention.
FIG. 3 is an explanatory perspective view showing a state in which a movable locking member 4 of the present invention is locked by a mounting member 7;
FIG. 4 is a perspective explanatory view showing a state where the movable locking body of the present invention is locked by the mounting member.
FIG. 5 is an explanatory perspective view showing a state in which the locking body of the present invention is locked by the mounting member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Building frame 2 Scaffold board 3 Handrail main body 30 Vertical rod 31 Horizontal rod 32 Connecting material 33 Fixing fixture 34 Fixing fixture 35 Connecting material 36 Fixing fixture 4 Movable locking body 40 Movable locking body 41 times Moving shaft 42 retaining portion 43 movable locking arm 44 insertion hole 45 fixing bolt and nut 5 locking body 6 mounting member 60 locking hole 7 mounting member 70 locking hole

Claims (1)

In handrails for temporary scaffolding, passing scaffolding boards between building frames and sequentially assembling them upwards, installing them on the side of the scaffolding boards, and installing them to prevent workers from falling down,
The handrail body provided on the side of the scaffolding plate is a frame body that can prevent a person from falling down,
A movable locking body provided at both upper ends,
It consists of a pair of locking bodies provided close to each other at the lower ends,
The movable locking body is inserted through the movable locking body main body for fixing the handrail main body and the tip end of the movable locking body main body so as to be rotatable in the vertical direction, and a retaining portion provided at the lower end is movable locking. It consists of a movable locking arm that fixes the upper end of the rotating shaft that can be lifted upward until it comes into contact with the body main body,
The pair of locking bodies are simultaneously locked to the mounting member provided on the building frame, and then the lower end of the movable locking arm is pivoted into the locking hole of the mounting member provided on the upper part of the building frame. A handrail for scaffolding, characterized in that it can be lifted and inserted while rotating upward as a center.

Images