JP7168402B2 - Connection metal fittings and protective fences using such connection metal fittings - Google Patents

Description

TECHNICAL FIELD The present invention relates to a protective fence such as a panel fence, a beam fence, and a mesh fence fence installed on a road, etc., and relates to a connection metal fitting for connecting a post and a beam material, and a protective fence using the connection metal fitting. .

Conventionally, as a beam mounting structure and mounting hardware for guard fences installed on roads, etc., for example, there is a mounting structure provided with a metal fitting that is fixed to a support to hold the end of the beam. There is a metal fitting that consists of a fixed base (base metal fitting), a beam receiving part (beam receiving metal fitting) that supports the beam end from below, and a covering part (covering metal fitting) that covers the upper surface of the beam end. . In the mounting structure, the beam receiving portion and the covering portion are a pair of vertically divided halves, and a substantially cylindrical opening formed by the pair of beam receiving portions and the covering portion is provided. (Patent Document 1). According to this conventional mounting structure or mounting bracket, once the beam material is temporarily placed on the beam receiving portion attached to the post, the covering bracket is placed on top of it, and then fixed with bolts and nuts. It is something to do.

JP 2011-196142

However, according to the above-described conventional mounting structure or mounting bracket, when placing the beam member on the beam receiving portion attached to the support, the beam member is placed higher than the upper end of the beam receiving portion on the side where the beam member is to be attached. It must be lifted and placed on the beam receiver. However, according to this conventional mounting structure or mounting bracket, the ends of the beam receiving portions on the front side and the back side of the protective fence are set at the same height, so that a long and heavy beam material cannot be lifted. Placement is a heavy burden on the operator.

SUMMARY OF THE INVENTION The present invention is intended to overcome the above-mentioned problems, and is a connection of beam materials that enables a worker who installs a guard fence to lift the beam material to a lower height and to reduce the work load as much as possible. The purpose is to provide fittings.

In order to achieve the above object, the present invention has the following configuration. That is, the connection fitting according to the present invention is a connection fitting for connecting a beam material to a post in a protective fence in which a beam material is laid between the posts erected at a predetermined interval, and is attached to the post. and a base fitting having a substantially semi-cylindrical beam receiving portion attached to the end of the beam, and the beam holding portion supports and holds the end of the beam from below. a material receiving portion, and a cover portion that covers the beam material end portion and the beam material receiving portion from above, the beam material receiving portion and the cover portion forming a substantially cylindrical shape by a pair of half-split members, One side wall of the beam material receiving portion on the front side or the back side of the protective fence is formed lower than the other side wall, and the base portion has an insertion hole through which a bolt for fixing to the support can be inserted. is formed, and the insertion hole is formed as an elongated hole in the horizontal direction so that the longitudinal direction of the elongated hole extends from the side of the lower side wall of the beam material receiving portion to the side of the other side wall of the beam material receiving portion. and the mounting angle of the base fitting is adjusted to follow the road, and the beam material receiving portion having one side wall formed lower than the other side wall can be arranged according to the curve of the road. It is characterized by being provided in

According to the connection fitting according to the present invention, the side wall of either the front side of the protective fence or the rear side of the beam material receiving portion is formed lower than the other side wall, so that the worker who installs the protective fence can When the beam material is placed on the beam material receiving portion , the height for lifting the beam material is low, so the burden on the operator is lightened.

Further, in the connection fitting according to the present invention, the base portion and the beam material receiving portion may be integrally formed. In this way, the installation work of the protective fence becomes easier.

According to the present invention, the beam holding portion includes a beam receiving portion that supports and holds the end of the beam from below, and a cover that covers the beam end and the beam receiving portion from above. The beam material holding part and the cover part are formed into a substantially cylindrical shape by a pair of half-split members. Since it is formed to be lower than the height, when a worker who installs the protective fence places the beam member on the beam member receiving portion , the height for lifting the beam member can be low, and the burden on the worker is lightened.

It is a front view which shows one Embodiment of the protective fence using the connection fitting which concerns on this invention. FIG. 2 is a rear view of the protective fence shown in FIG. 1; FIG. 4 is an explanatory view showing how a column and a beam member are connected using the connection fitting according to the present invention, and is an exploded perspective view before connection. FIG. 4 is an explanatory view showing a state of connecting the column and the beam material using the connection fitting shown in FIG. 3, and is a perspective view showing a state of completion of the connection. 5 is a front view of the connection fitting shown in FIG. 4; FIG. 5 is a rear view of the connection fitting shown in FIG. 4; FIG. FIG. 5 is a plan view of the connection fitting shown in FIG. 4;

BEST MODE FOR CARRYING OUT THE INVENTION Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

FIGS. 1 to 7 show an embodiment of a protective fence using a connection fitting and the connection fitting according to the present invention, and FIGS. 1 and 2 show a protective fence using the connection fitting. 3 and 4 show how the pillars and beam members are connected using the connection fittings, and FIGS. 5 to 7 show the connection fittings.

As shown in FIGS. 1 and 2, a protective fence 1 using a connection fitting 4 according to the present embodiment has a beam material 3 spanned between a plurality of pillars 2 erected on the ground at intervals. 2 and a beam material 3 are connected by a connection metal fitting 4. As shown in FIG. The connection fitting 4 is composed of a base fitting 5 and a cover fitting (cover portion) 6 . As shown in FIG. 3, the base metal fitting 5 includes a base portion 51 that abuts against and is attached to the support column 2, and a beam material receiving portion that protrudes horizontally from the base portion 51 and has a substantially semicircular solid shape when viewed from the side. 52 are integrally formed. Moreover, the cover fitting 6 is put on the beam receiving portion 52 to cover the end portion of the beam material 3 . Thus, as shown in FIGS. 1 to 3, the beam material receiving portion 52 and the cover portion 6 are formed as a pair of half-split members to form a substantially cylindrical shape, and the beam is inserted into the opening of the cylindrical portion. The end of the material 3 is inserted and fixed.

3 and 4 are diagrams showing how the column 2 and the beam material 3 are connected using the connection fitting 4 in this embodiment. As shown in FIG. 3, the base portion 51 of the base fitting 5 is An insertion hole 511 is formed, and a bolt B1 is inserted through the bolt hole 21 formed in the support and the insertion hole 511 of the base portion 51, and a nut N1 is tightened to fix the base metal fitting 5 to the support. In addition, the insertion hole 511 of the base portion 51 is formed as an elongated hole elongated in the horizontal direction. As a result, even if the road curves left and right, the installation angle of the base metal fitting 5 can be adjusted so as to follow the road, and the protective fence 1 can be installed according to the curve of the road. becomes.

In this state, the beam member 3 is placed in the arcuate concave portion of the beam receiving portion 52. At this time, the side wall 521 of the beam receiving portion 52 on the front side (the side where the worker works) of the protective fence 1 is formed low, the minimum height required for the worker to lift the beam member 3 is sufficient, thereby reducing the burden on the worker (see FIGS. 3 and 5 to 7). On the other hand, the side wall 522 of the beam receiving portion 52 on the rear side of the protective fence (the side opposite to the side where the worker works) is formed high. As a result, even if the operator lifts the beam 3 from the front side and places it on the beam receiving portion 52 with some force, the beam 3 collides with the side wall 522 and the beam 3 is pushed back. Less chance of falling sideways.

After the beam material 3 is temporarily placed on the beam material receiving portion 52, the cover portion (cover metal fitting) 6 is put thereon. As a result, the ends of the beam member 3 are covered with the cover portion 6 . Then, the bolt B<b>2 is inserted through the insertion hole 523 formed in the beam material receiving portion 52 and the bolt hole 31 formed in the beam material 3 . A screw groove is formed in a bolt hole 61 formed in the cover portion 6, and a bolt B2 is screwed into the bolt hole 61 to firmly fasten the beam member 3 to the connection fitting 4. As shown in FIG.

The bolt holes 31 formed in the beam member 3 are elongated holes extending in the longitudinal direction of the beam member 3 . As a result, even if there is a slight difference in the distance between the columns 2, the beam member 3 can be properly attached.

Although the connection fitting according to the present invention and the protective fence using the connection fitting have been described above based on the embodiments, the present invention is not limited to the above-described embodiments. Various modifications conceived by those skilled in the art are included in the scope of the present invention without departing from the gist of the present invention. for example,

According to the present invention, when the worker who installs the protective fence places the beam material on the beam material receiving part , the height for lifting the beam material can be lowered, the burden on the worker is lightened, and the protective fence is installed. becomes easier.

1 Protective fence 2 Post 3 Beam material 31 Bolt hole 4 Connection metal fitting 5 Base metal fitting 51 Base part 52 Beam material receiving part 521 (Front side) Side wall 522 (Back side) Side wall 523 Insertion hole 6 Cover part (Cover metal fitting)
61 bolt hole 7 beam material holding part

Claims (3)

A connection metal fitting for connecting a beam material to a support fence in a guard fence in which a beam material is laid between the supports erected at a predetermined interval, comprising a base part attached to the support and an end part of the beam material. A base metal fitting having a substantially semi-cylindrical beam material receiving portion attached to the
The beam material holding part includes the beam material receiving part that supports and holds the end part of the beam material from below, and a cover part that covers the beam material end part and the beam material receiving part from above,
The beam material receiving portion and the cover portion are formed into a substantially cylindrical shape by a pair of half-split members,
one side wall of the beam material receiving portion on the front side or the back side of the protective fence is formed lower than the other side wall,
The base portion is formed with an insertion hole through which a bolt for fixing to the support column can be inserted. is provided so as to go from the one side wall side formed low to the other side wall side ,
The mounting angle of the base metal fitting is adjusted to follow the road, and the beam material receiving portion having one side wall formed lower than the other side wall is provided so as to be arranged according to the degree of curvature of the road . A connection fitting characterized by: 2. The connection fitting according to claim 1, wherein the base portion and the beam material receiving portion are integrally formed. 3. The connection fitting according to claim 1 or 2, which connects a plurality of posts erected at predetermined intervals, a beam material extending between the posts, and an end portion of the post and the beam material. Protective fence with

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