JP4092449B2 - Scaffolding board holder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scaffold plate receiver, and more particularly to a scaffold plate receiver used for a scaffold installed in a protruding manner in construction such as a bridge or an elevated road.
[0002]
[Prior art]
In construction of elevated roads, for example, the work of pouring concrete to form balustrades on both sides of the road is difficult to carry out from the road side, so the scaffolding is installed from the edge of the road and is performed from the outside of the road There is a case. Conventionally, such a scaffold is a steel or wooden square scaffolding plate support whose one end is supported by a road at a predetermined interval, a scaffolding plate arranged in a direction orthogonal to the scaffolding plate support, and the other end of the scaffolding support. The handrail receiver fixed to the part and the handrail supported by the handrail receiver are fixed to the scaffold receiver by welding, bolts, nuts, or the like.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional scaffolds, there has been a demand for easier and simpler installation and disassembly work of the scaffolds.
[0004]
An object of the present invention is to provide a scaffold plate holder that makes it easy and simple to install and disassemble a scaffold.
[0005]
[Means for Solving the Problems and Effects of the Invention]
A scaffolding plate support according to the present invention includes a hollow aluminum extruded crosspiece having a substantially square cross section, and a square tubular base member slidably fitted on the crosspiece, and at least one of left and right side walls of the crosspiece In addition, a guide groove extending in the length direction in which the bolt head or nut is movably fitted is provided, and at the opening edge of the guide groove, the bolt head or nut is prevented from coming off and the bolt is removed. A retaining portion is provided that allows the threaded portion to be inserted, and either one of a bolt head that penetrates the left and right side walls of the base member and a nut that is screwed to the bolt is fitted into the guide groove, The base member is fixed to the crosspiece by bolts and nuts.
[0006]
According to the scaffold plate receiver of the present invention, the base member is fixed to the crosspiece by the bolts and nuts. Therefore, the base member can be easily detached from the crosspiece by removing the bolts and nuts. Further, by loosening the bolts and nuts, the base member can be slid in the length direction of the crosspiece, so that it can be installed at an arbitrary position.
[0007]
The base member can be provided with various things necessary for the scaffolding. For example, a tubular handrail insertion portion into which the lower end portion of the handrail is fitted is provided on the top wall of the base member. Can do. This makes it possible to change the position of the handrail according to the width of the scaffolding board, facilitates the installation of the scaffolding, and prevents a gap from being generated between the scaffolding board and the handrail. Can also be increased.
[0008]
The scaffold plate receiver further includes a rectangular plate-like cover that closes the end opening of the crosspiece, and a nut that is fitted into the guide groove is fixed to the back surface of the cover, and a bolt is attached to the nut from the outside of the crosspiece. It is preferable that the cover is fixed to the crosspiece by screwing. Thereby, the opening of the crosspiece can be easily closed, water and foreign matter can be prevented from entering, and the aesthetics and safety can be improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
FIG. 1 shows an example of a construction site where a scaffolding plate holder according to the present invention is used. An elevated road (1) and a formwork into which concrete for forming a balustrade along the elevated road (1) is poured. (2) and a scaffold (3) installed overhanging at the edge of the highway (1), and this scaffold (3) comprises a scaffold plate holder (4) according to the present invention and a scaffold plate holder. The scaffolding plate (5) and the handrail (6) are arranged in a direction orthogonal to (4).
[0011]
The scaffold plate receiver (4) includes a hollow aluminum extruded crosspiece (8) having a substantially square cross section, and a rectangular tubular base member (9) slidably fitted on the crosspiece (8). One end is supported in a cantilever manner by an anchor (7) fixed to the road (1). The base member (9) is attached to the crosspiece (8) using bolts (13) and nuts (14) as described later. The handrail (6) is composed of a longitudinal member and a transverse member, and the lower end portion of the longitudinal member is fitted into a cylindrical handrail insertion portion (11) fixed to the top wall of the base member (9), and its lower end surface Is received by the top wall of the base member (9). The end opening of the crosspiece (8) is closed by a rectangular plate-like cover (12).
[0012]
As shown in detail in FIGS. 2 and 3, guide grooves (15) extending in the length direction in which the head (13) of the bolt (13) is movably fitted in the left and right side walls (8a) of the crosspiece (8). ) Is provided. On the upper and lower edges of the opening of the guide groove (15), a retaining portion that prevents the head (13) of the bolt (13) from coming off and allows the male thread of the bolt (13) to be inserted. (16) is provided over the entire length. The top wall (8b) of the crosspiece (8) is also provided with a guide groove (17) with a stopper (18) into which a bolt head or the like is movably fitted. The upper wall forming the guide groove (15) of the left and right side walls (8a) of the crosspiece (8) and the bottom wall forming the guide groove (17) of the top (8b) of the crosspiece (8) are connected in a straight line. Thus, the reinforcing wall (19) is formed in the hollow portion.
[0013]
The left and right side walls (9a) have through holes (20) through which the male threads of the bolts (13) are inserted.
[0014]
The lower end of the handrail insertion part (11) is welded to the top wall (9a) of the base member (9), thereby being integrated with the base member (9). A nut (22) is welded to match the radial through-hole drilled in the peripheral wall of the handrail insertion part (11), and a bolt to prevent the handrail (6) from coming off. (21) is screwed.
[0015]
The bolt (13) is inserted from the inside into the through hole (20) of the base member (9), and the nut (14) is screwed onto the tip of the bolt (13), so that the head (13a) of the bolt (13) Is inserted into the guide groove (15) of the left and right side walls (8a) of the crosspiece (8). While the nut (14) is not tightly tightened, the base member (9) can be slid in the length direction of the crosspiece (8), and by tightening the nut (14), the base member (9) and thus the handrail (6) can be installed at a desired position.
[0016]
The head (13a) of the bolt (13) has a quadrangular prism shape so as not to rotate in the guide groove (15). The head (13a) of the bolt (13) may be a hexagonal column that does not rotate in the guide groove (15), and a hexagonal or square nut is non-rotatably fitted in the guide groove (15). The bolt may be screwed from the outside of the base member (9).
[0017]
A nut (24) to be fitted in the left and right guide grooves (15) of the crosspiece (8) is fixed to the back surface of the cover (12), and a bolt is attached to the nut (24) from the outside of the crosspiece (8). The cover (12) is fixed to the crosspiece (8) by screwing (23).
[Brief description of the drawings]
FIG. 1 is a diagram showing a construction site using a scaffolding plate support according to the present invention.
FIG. 2 is an exploded perspective view showing a scaffold plate holder and a handrail attached to the scaffold plate holder.
FIG. 3 is a cross-sectional view showing a scaffold plate receiver and a handrail attached to the scaffold plate receiver.
[Explanation of symbols]
(4) Scaffold plate holder
(6) Handrail
(8) Pier
(8a) Left and right side walls
(9) Base member
(9a) Left and right side walls
(11) Handrail insertion part
(12) Cover
(13) Bolt
(13a) Head
(14) Nut
(15) Guide groove
(16) Retaining part
(23) Bolt
(24) Nut

Claims (3)

A hollow aluminum extruded crosspiece (8) having a substantially square cross section, and a square tubular base member (9) slidably fitted on the crosspiece, are provided on the left and right side walls (8a) of the crosspiece (8). ) Is provided with a guide groove (15) extending in the length direction in which the head (13a) or the nut (14) of the bolt (13) is movably fitted, and the opening of the guide groove (15). At the edge, there is a retaining part (16) that prevents the head (13a) or nut (14) of the bolt (13) from coming off and allows the male threaded part of the bolt (13) to be inserted. One of the head (13a) of the bolt (13) passing through the left and right side walls (9a) of the base member (9) and the nut (14) screwed to the bolt (13) is formed in the guide groove (15). A scaffolding plate holder in which the base member (9) is fixed to the crosspiece (8) by bolts (13) and nuts (14). The scaffolding plate support according to claim 1, wherein a cylindrical handrail insertion portion (11) into which a lower end portion of the handrail (6) is fitted is provided on the top wall (9b) of the base member (9). A square plate-like cover (12) that closes the end opening of the crosspiece (8) is further provided, and a nut (24) that fits into the guide groove (15) is fixed to the back surface of the cover (12). The scaffolding plate support according to claim 1, wherein the cover (12) is fixed to the bar (8) by screwing the bolt (23) into the nut (24) from the outside of the bar (8).

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