JPH08134858A - Horizontal beam mounting structure of guard fence - Google Patents

Abstract

PURPOSE: To simplify a horizontal beam by a method wherein the mounting angle of a bracket is vertically and horizontally changed according to an installation place and even in the case of a curve and a slanting ground, there is no need to bend the horizontal beam and to prepare brackets for mounting the horizontal beams at different angles. CONSTITUTION: The horizontal beam mounting structure of a guard fence comprises a stay 1 having a circular hole made in a side, a bracket 3 provided at its tip with a spherical contact surface 3a in slide contact with the circular hole of the stay 1 and provided at its base end part with a horizontal beam mounting part 3b mounted on the end part of a horizontal beams 2, a washer 6 in contact with the inner side of the spherical contact surface 3a of the bracket 3, and a fastening bolt 7 extending through the washer 6 and the spherical contact surface 3a of the bracket 3. The washer 6 and the bracket 3 are securely fastened to the stay 1 by means of the fastening bolt 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross rail mounting structure for a protective fence installed at a boundary between a roadway and a sidewalk.

[0002]

2. Description of the Related Art Protective fences are installed at the boundaries between roads and sidewalks for safety. This protective fence was one in which several horizontal rails were attached to the pillar, one above the other. Conventionally, in order to attach the cross rail to the support, the cross rail mounting bracket is bolted and fixed to the support, and then the cross rail is bolted and fixed to the cross rail mounting bracket.

However, in such a conventional protective fence, when the installation location is a curve or a sloping ground, the installation angle of the cross rail changes. Therefore, the cross rail is bent or the installation angle of the cross rail is changed according to the installation location. I had to prepare a different mounting bracket separately.

[0004]

SUMMARY OF THE INVENTION The present invention solves the problems described above, and bends a horizontal crossbar according to the installation location even when the vehicle is on a curved or sloping ground, or separately prepares a mounting bracket according to the curve or the inclination. The purpose is to provide a cross rail mounting structure for a guard fence that does not need to be

[0005]

Therefore, in the horizontal rail mounting structure of the protective fence of the present invention, the pillar 1 having the circular hole 1a formed on the side surface and the spherical shape slidably contacting the circular hole 1a of the pillar 1. A bracket 3 provided with a contact surface 3a at the tip end thereof, and further provided with a horizontal rail attachment portion 3b capable of mounting the end portion of the horizontal rail 2 at the base end, and a washer 6 contacting the inside of the spherical contact surface 3a of the bracket 3. , Spherical contact surface between washer 6 and bracket 3
And a tightening bolt 7 penetrating 3a.
The washer 6 and the bracket 3 are fastened and fixed to the column 1.

The end face of the washer 6 may be formed in a spherical shape, or the upper half of the horizontal rail mounting portion 3b of the bracket 3 may be separated.

[0007]

In the horizontal rail mounting structure of the protective fence of the present invention, the spherical contact surface of the bracket 3 is provided before the tightening bolt 7 is tightened.
Since 3a slidably contacts the circular hole 1a of the column 1,
The mounting angle of the bracket 3 can be changed vertically and horizontally.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of a protective fence using the cross rail mounting structure according to the present invention. Reference numeral 1 is a pillar that is erected at a constant interval on the boundary between a roadway and a sidewalk of the road. Two horizontal rails 2 are vertically provided between the two.

The column 1 is made of a steel pipe, and as shown in the sectional view of FIG. 2 and the exploded perspective view of FIG.

The horizontal rail 2 is made of a steel pipe having a diameter smaller than that of the support column 1, and is provided with a long hole 2a at an end portion of a side surface thereof, through which a mounting bolt 4 described later can be vertically inserted.

Reference numeral 3 denotes a bracket for connecting the support 1 and the horizontal rail 2 with a spherical contact surface 3a which is fitted in a circular hole 1a of the support 1 and slidably contacts with the tip. Cage,
A cylindrical horizontal rail mounting portion 3b to which the end of the horizontal rail 2 can be mounted is provided at the base end. The horizontal rail mounting portion 3b is provided with bolt insertion holes 3d and 3e for inserting the fixing bolt 4. Furthermore, the upper half of the horizontal rail attachment part 3b is a separable lid 3c.
By separating the lid 3c, the end of the horizontal rail 2 can be easily inserted into the horizontal rail mounting portion 3b. On the other hand, a tightening bolt insertion hole 3f for inserting a tightening bolt 7, which will be described later, is provided at the top of the spherical contact surface 3a at the tip.
Furthermore, the inner surface of the spherical contact surface 3a is a hemispherical concave surface.

The fixing bolt 4 is for fixing the horizontal rail 2 to the horizontal rail mounting portion 3b of the bracket 3 by inserting the bolt through holes 3d, 3e of the bracket 3 and the long holes 2a, 2a of the horizontal rail 2. It uses hexagon socket head round head bolts.

Reference numeral 5 is a nut which is a counterpart of the fixing bolt 4. 6 is a hole for inserting the tightening bolt 7 in the center
This is a donut-shaped washer provided with 6a, and the end surface 6b is formed in a spherical band shape, and the end surface 6b slidably contacts the inner side surface of the bracket 3. End face 6b of washer 6
Is formed in a spherical shape in order to increase the area of contact with the inner side surface of the bracket 3 so that the bracket 3 can be pressed firmly against the column 1.

The tightening bolt 7 is a hexagonal bolt that is inserted through the washer 6 and the tightening bolt insertion hole 3f of the bracket 3 to tighten and fix the washer 6 and the bracket 3 to the column 1.

Reference numeral 8 denotes a nut which is a counterpart of the tightening bolt 7. In order to assemble the protective fence configured as described above, first, the spherical contact surface 3a at the tip of the bracket 3 is applied to one of the circular holes 1a formed in the side portion of the column 1.

Then, the end surface 6b formed in the spherical shape of the washer 6 is applied to the hemispherical concave surface inside the spherical contact surface 3a.

Next, the spherical contact surface 3a at the tip of the other bracket 3 is applied to the other circular hole 1a of the column 1.

Then, similarly, the end surface 6b formed in the spherical shape of the washer 6 is applied to the hemispherical concave surface inside the tip portion 3a.

Insert the tightening bolt 7 into the hole 6a of the one washer 6.
Through the hole 6a of the other washer 6, and tighten the tightening bolt 7
Of the washer 6 is projected from the hole 6a of the other washer 6, and the nut 8 is attached to the projected screw portion. When the tightening bolt 7 is temporarily tightened, the spherical contact surface 3a can slide in the circular hole 1a, and the angle of the bracket 3 can be freely changed up, down, left, and right. The mounting angle of 3 is determined in advance.

When the tightening bolt 7 is tightened, the bracket 3 is fixed to the column without changing the angle. At this time, a part of the spherical contact surface 3a at the tip of the bracket 3 is fitted into the circular hole 1a of the column 1, so that there is no backlash between the column 1 and the bracket 3 and the mounting of the bracket 3 The position is definitely decided.

The end of the horizontal rail 2 is put inside the horizontal rail mounting portion 3b of the bracket 3, and the lid 3c is covered. After that, the fixing bolt 4 is inserted into the bolt insertion holes 3d and 3e of the bracket 3 and the elongated holes 2a and 2a of the horizontal rail 2, and is screwed into the nut 5, whereby the bracket 3 and the horizontal rail 2 are fixed. The horizontal rail 2 is similarly fixed to the other bracket 3.

In the embodiments described above, the support 1 and the horizontal rail 2 are made of steel pipes, but other cross-sectional shapes such as square steel pipes can be used. Further, although the horizontal rails 2 are attached to both sides of the support column 1, it can be implemented with only one side.

[0024]

In the horizontal rail mounting structure of the protective fence of the present invention, since the mounting angle of the bracket 3 can be changed vertically and horizontally depending on the installation location, the horizontal rail can be bent even in a curved or sloping ground. Since it is not necessary to prepare a mounting bracket with a different mounting angle of the horizontal rail, the horizontal rail can be easily mounted.

[Brief description of drawings]

FIG. 1 is a perspective view of a protective fence using the cross rail mounting structure of the present invention.

FIG. 2 is a vertical sectional view showing a horizontal rail mounting structure of the present invention.

FIG. 3 is an exploded perspective view showing a horizontal rail mounting structure of the present invention.

[Explanation of symbols]

 1 Support 1a Circular hole 2 Horizontal rail 3 Bracket 3a Spherical contact surface 3b Horizontal rail mounting part 3f Tightening bolt insertion hole 6 Washer 6a Hole 6b End surface 7 Tightening bolt

Claims (3)

[Claims] 1. A support (1) having a circular hole (1a) formed on a side surface thereof, and a spherical contact surface (3a) slidably contacting the circular hole (1a) of the support (1) are provided at a tip portion thereof. , A bracket (3) having a cross rail mounting portion (3b) at the base end to which the end of the cross rail (2) can be attached, and a washer which contacts the inside of the spherical contact surface (3a) of the bracket (3). (6), the spherical contact surface (3a) of the washer (6) and the bracket (3)
And a tightening bolt (7) which penetrates through, and a washer (6) and a bracket (3) are tightened and fixed to the column (1) by the tightening bolt (7). Crosspiece mounting structure. 2. The cross rail mounting structure for a protective fence according to claim 1, wherein the end surface of the washer (6) is formed in a spherical shape. 3. The horizontal rail mounting structure for a protective fence according to claim 1, wherein the upper half of the horizontal rail mounting portion (3b) of the bracket (3) is separable.