JPH09228333A - Beam fitting structure of guard fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beam fitting structure which is superior in workability and appearance. SOLUTION: A connection fitting 5 is inserted and screwed on the end part of a beam 2, as a connecting part, the connecting part of the beam 2 is fitted to a fitting 3 attached to a side wall of a column 1, and a cover 6 is fitted to the fitting 3, so that it covers the connecting part of the beam 2. The fitting 3 is almost L-shaped, a surface of a supporting part 32 of the fitting 3 has a shape corresponding to an external shape of the beam, a female screw for fitting, is fitted to the side wall of the column 1, and the fitting 3 is screwed and fitted on the female screw. Accordingly, the connection fitting 5 for connecting the end part of the beam 2 can be temporarily placed on the fitting 3, when the beam 2 is fitted to the column 1, so that the workability can be improved, the cover 6 is fitted after the connection fitting 5 is screwed, so that a head of a bolt for fitting the cover 6, can be concealed, by which the safety and appearance can be improved, and further a nut for mounting the fitting 3, is not exposed to the side wall of the column 1, so that the safety and appearance can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam mounting structure for a protective fence used outdoors such as at a boundary between a roadway and a sidewalk or at a car stop.

[0002]

2. Description of the Related Art Conventionally, as a beam mounting structure of a protective fence, as described in Japanese Utility Model Publication No. 5-2655, a circular arc groove-shaped strut fitting plate extending in the vertical direction and an upper end portion of the strut fitting plate are provided. And a groove-shaped support metal fitting composed of an upper end plate and a lower end plate bent and connected to the lower end portion, the strut fitting plate is fitted to the side surface of the strut, and a part of a tubular body such as a beam pipe joint pipe Is fitted between the upper end plate and the lower end plate and arranged in contact with or close to the outer surface of the strut fitting plate,
A beam pipe mounting structure has been proposed in which the support column, the support metal fittings, and the pipe body are tightened and coupled by bolts and nuts inserted therethrough.

[0003]

However, in the above-described beam pipe mounting structure, the beam pipe must be inserted from the side surface of the metal fitting when the beam pipe is assembled, and there is a problem in workability. Further, the heads of the bolts for mounting the beam were exposed on the front, upper surface, rear surface and lower surface of the beam, which was dangerous for contact with pedestrians and was not good for the scenery.

Therefore, as a result of intensive studies in view of the above-mentioned conventional drawbacks, the present invention intends to provide a beam mounting structure for a protective fence which is excellent in workability and landscape.

In the beam mounting structure of the protective fence according to claim 1 of the present invention, the beam length is equal to or slightly smaller than the center-to-center distance of the columns, and the beam is attached to the end of the beam. The connection fitting is inserted and screwed to form a connection portion, the connection portion of the beam is attached to the attachment fitting attached to the side wall of the column, and the cover is attached to the attachment fitting so as to cover the connection portion of the beam. The mounting bracket is substantially L-shaped, and the upper surface of its support portion has a shape corresponding to the outer shape of the beam, and a female thread for mounting is provided on the side wall of the column, and the mounting bracket is screwed and mounted to this female screw. When attaching the beam to the column, the workability is good because the connection metal fittings that connect the beam end can be temporarily placed on the mounting metalwork and work is easy.Because the cover is attached after the connection metal fitting is screwed on, the bolt head can be seen. Without being on the landscape Excellent, also it has excellent safety and landscape so nuts that secure the mounting bracket is not exposed to the strut sidewalls. In the beam mounting structure for a protective fence according to claim 2 of the present invention, a bolt hole is formed at an appropriate position of a long metal fitting, and a nut is mounted on the bolt hole to form a nut mounting metal fitting. It is attached to the inner wall of the column and has a female thread for mounting. It can be mounted after the surface treatment of the column, and the thread of the female thread is not filled with paint. Further, it is possible to easily form a plurality of female screws even in a portion away from the end of the column.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a front view showing an example of an embodiment of a beam mounting structure for a protective fence of the present invention.

[0006] Reference numeral 1 denotes a pillar, the lower portion of which is buried in the ground, and a plurality of pillars are erected on the surface of the earth at appropriate intervals. A beam 2 is erected on the front surface of the pillar via a mounting bracket 3 to form a protective fence. The pillar 1 is made of a metal tube such as a steel tube, and its side walls are provided with mounting female screws 4 at appropriate intervals. The mounting female screw 4 may be formed in the side wall of the support column 1. However, a bolt hole 11 is formed in the support column 1, and after the surface treatment of the support column 1, a nut is used as a metal fitting by caulking a nut on the inner wall of the support column corresponding to the bolt hole. Attach the nut mounting metal fittings attached by etc. by an appropriate method such as tacking or welding,
The attachment female screw 4 is preferable because the thread of the female screw is not filled by the surface treatment of the support such as painting. The surface treatment of the pillar 1 is not limited to the coating treatment, and may be any surface treatment such as plating or chemical conversion treatment. When a stainless steel pipe or the like is used for the pillar 1, no treatment may be performed.

The beam 2 is generally a tubular body made of a steel pipe or the like having a circular cross section, and bolt holes 21 are formed at predetermined positions from both ends thereof. The beam 2 has connecting fittings 5 inserted at both ends thereof, and the beam 2 and each end portion of the beam 2 are connected with bolts 6 through the connecting fittings 5 to form a connecting portion, and this connecting portion is connected via a mounting fitting 3. It is attached to the pillar 1 as a protective fence. The beam 2 may be subjected to appropriate surface treatment such as painting, plating or chemical conversion treatment after forming the bolt holes at both ends thereof, and may be untreated when it is made of a stainless steel tube or other non-rust material.

The mounting member 3 is composed of a flat mounting portion 31 and a supporting portion 32 formed by bending an end portion of the mounting portion 31. A bolt hole for attaching to the support column 1 is bored in the approximate center of the mounting portion 31, and the mounting female screw of the support column 1 is screwed into the bolt hole. The upper surface of the support portion 31 has a shape corresponding to the outer shape of the beam 4, a bolt hole is bored at substantially the center thereof, the connection portion of the beam is placed on the support portion 31, and the connection metal fitting 5 is substantially formed. A bolt is inserted into a bolt hole that is vertically penetrated through the center and is attached to the mounting member 3 by screwing, and a cover 6 is attached to the mounting member 3 so as to cover the connecting portion. Cover 6
An engaging portion 61 is formed on the inner wall of the engaging member 33, and the engaging portion 33 is engaged and attached to the engaging portion 33 formed on the attachment fitting 3.

The mounting member 3 may be manufactured by bending a metal plate such as a steel plate, or may be manufactured by casting a metal such as steel, zinc or aluminum. Further, the surface may be subjected to appropriate surface treatment such as painting, plating or chemical conversion treatment,
When it is made of stainless steel or other stainless steel, it may be untreated.

As described above, since the cover 4 covers the connection between the column and the beam, the head and nut of the bolt are not exposed at the upper part and the front, and the head and nut of the bolt are not exposed to the pedestrian. It is safe to touch and has excellent scenery. Since the cover 4 is a member that covers the heads of the bolts and the nuts as described above, it does not require a particularly large proof stress, and may be manufactured by processing a metal plate and finishing by painting or by molding a synthetic resin. It may be produced by

The connecting fitting 5 has an outer diameter corresponding to the inner diameter of the beam 2, a female screw 51 for mounting the beam is formed on the lower inner wall, and bolt holes are formed in the upper and lower portions of the center thereof. The connection fitting 5 is screwed to the beam 2 with the beam mounting female screw 51 to connect the beam 2 to each other. Connection fitting 5
Is formed by bending a metal plate such as a steel plate to form a cylindrical system, and forming a female screw 51 by welding a nut to the lower side wall of the metal plate, and forming bolt holes in the upper and lower portions of the substantially central portion. There is. The outer diameter of the connecting fitting 5 is not limited to a cylindrical system as long as it has a shape capable of accommodating the inner diameter of the beam 2, and the surface thereof may be appropriately surface-treated.

[0012]

In the beam mounting structure for the protective fence according to claim 1 of the present invention, the beam length is the same as the center-to-center distance of the stanchions or is slightly small, and the connecting metal fitting is inserted at the end of the beam. The beam connecting portion is attached to a mounting metal fitting that is screwed to form a connecting portion, and is attached to the side wall of the column, and a cover is attached to the mounting metal fitting so as to cover up the connecting portion of the beam. The L-shaped support has an upper surface having a shape corresponding to the outer shape of the beam, a female thread for mounting is provided on the side wall of the column, and the mounting bracket is screwed and attached to this female thread. When installing on
Work can be done by temporarily placing the connection metal fittings that connect the beam end on the mounting metal fittings, and the bolting work can be done from the front of the protective fence, so workability is good.Because the cover is attached after screwing the connection metal fittings, bolts and The nut is not exposed on the front and upper surfaces, which is safe and has an excellent view. In addition, the nut on which the mounting bracket is attached is not exposed on the side wall of the column, which is safe and has an excellent view. In the beam mounting structure for a protective fence according to claim 2 of the present invention, a bolt hole is formed at an appropriate position of a long metal fitting, and a nut is mounted on the bolt hole to form a nut mounting metal fitting. It is attached to the inner wall of the column and has a female thread for mounting. It can be mounted after the surface treatment of the column, and the thread of the female thread is not filled with paint. Further, it is possible to easily form a plurality of female screws even in a portion away from the end of the column.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an embodiment of a beam mounting structure for a protective fence of the present invention.

FIG. 2 is a sectional view showing an AA section in FIG. 1;

FIG. 3 is an assembly explanatory view showing an example of an embodiment of a mounting bracket used in the beam mounting structure of the protective fence of the present invention.

FIG. 4 is an assembly explanatory view showing an example of an embodiment of a mounting structure of a connecting portion in the beam mounting structure of the protective fence of the present invention.

FIG. 5 is a partially cutaway front view showing an example of an embodiment of a mounting structure of a connecting portion in a beam mounting structure for a protective fence of the present invention.

FIG. 6 is a front view of the cover showing an example of the embodiment of the attachment structure of the connection part in the beam attachment structure of the protective fence of the present invention. (The cover is shown by a chain double-dashed line)

FIG. 7 is an assembly explanatory view showing an example of an embodiment of a cover mounting structure in the beam mounting structure for the protective fence of the present invention.

FIG. 8 is a partially cutaway front view showing an example of an embodiment of the cover mounting structure in the beam mounting structure for the protective fence of the present invention.

FIG. 9 is a front view in which a cover is omitted, showing an example of an embodiment of an attachment structure of a connection portion in a beam attachment structure of a protective fence of the present invention.

FIG. 10 is an assembly explanatory view showing another example of the embodiment of the cover mounting structure in the beam mounting structure for the protective fence of the present invention.

FIG. 11 shows another example of the embodiment of the cover mounting structure in the beam mounting structure of the protective fence of the present invention, (a) is a side assembly explanatory diagram, and (b) is a horizontal sectional assembly explanatory diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 11 Bolt hole 2 Beam 21 Bolt hole 3 Mounting bracket 31 Mounting part 32 Support part 33 Locking part 4 Female mounting screw 5 Connection metal fitting 51 Beam mounting female screw 6 Cover 61 Locking part

Claims (2)

[Claims] 1. In a guard fence in which a beam made of a long tubular body is installed between columns, the beam length is made to be the same as the center-to-center distance of the columns or is slightly smaller. A connecting metal fitting is inserted and screwed into the end of the to form a connecting portion, the beam connecting portion is attached to the mounting metal fitting attached to the side wall of the column, and the cover serves as the mounting metal fitting so as to cover up the connecting portion of the beam. It is mounted, and the mounting bracket is substantially L-shaped, and the upper surface of the supporting portion has a shape corresponding to the beam outer shape,
A beam mounting structure for a protective fence, wherein a female thread for mounting is provided on the side wall of the column, and the mounting metal fitting is screwed to the female thread. 2. A protective fence in which a plurality of beams are installed between columns, and bolt holes are bored at appropriate positions of a long metal fitting, and nuts are mounted on the bolt holes to mount nut fittings. The beam mounting structure for a protective fence according to claim 1, wherein the nut mounting bracket is mounted on the inner wall of the column to form a female screw for mounting.