JP2005201008A - Guard fence capable of being installed on slope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guard fence capable of being installed on a slope wherein a horizontal beam and a vertical piece can be fixed at a reference position of vertically crossing with each other and the angle of the vertical piece with respect to the horizontal beam can be adjusted according to the inclination of an installation site without applying a large force. <P>SOLUTION: The guard fence is constituted by securing to erected struts a guard fence frame wherein a plurality of the vertical pieces 3 are turnably installed between the upper and lower horizontal beams 2. A horizontal frame 2 and the vertical piece 3 inserted into the horizontal frame 2 through a slot hole 5 made in the horizontal frame 2 are joined by a pin 4. The vertical piece 3 is secured to the vicinity of a first end part of the slot hole 5 so that the vertical piece 3 cannot be turned to the first end part side from the reference position due to interference of the vertical piece 3 with the first end part. The vertical piece 3 can be turned to the second end part side opposite to the first end part side until the vertical piece 3 gets into contact with the second end part on the opposite side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a protective fence used on a side of a road or a boundary with a river / water channel, and more particularly to a protective fence installed on an inclined land.

  Currently, many protective fences are installed to prevent the fall of rivers and waterways, or the boundaries between sidewalks and roadways. If the installation location of this protective fence is on a slope, it is necessary to perform construction on the site according to the slope of the slope, or to prepare protective fences for various inclination angles in advance. The problem arises that the protective fence that has not been used is wasted due to long-term inventory.

In order to cope with this, a protective fence has been proposed in which the horizontal beam and vertical beam of the protective fence frame are not fixed, and the horizontal beam and vertical beam can be given an arbitrary angle according to the inclination angle. . An example is shown in FIG. FIG. 5A is a front view showing a state in which the horizontal beam 102 and the vertical beam 108 on the upper part of the protective fence frame 101 are attached, and FIG. 5B is a cross-sectional view seen from the arrow H in FIG. It is.
As shown in FIG. 5 (b), rivet holes 104 a are formed at a predetermined pitch in the elongated flat plate 104, and rivet holes 103 a are also formed at the end of the vertical beam 103, so that the rivet 105 is formed. The vertical beam 102 is rotatably attached to the flat plate 104 by being inserted into both rivet holes and crimped. And the horizontal beam 102 is attached so that the flat plate 104 to which the vertical crosspiece 102 was attached may be attached, and the guard fence frame 101 is formed.

With the above structure, as shown in FIG. 5 (a), the vertical beam 103 is both in the direction of the arrow I and the direction of the arrow J with respect to the position perpendicular to the horizontal beam 101 (flat plate 104). Can be rotated. Thereby, according to the inclination angle of an installation place, an arbitrary angle can be attached to the horizontal beam 102 and the vertical beam 103, and a protective fence can be installed. (See Patent Document 1.)
JP-A-11-270197

  In the case of the above-described protective fence frame 101, the vertical beam 103 rotates in both directions with respect to a position perpendicular to the horizontal beam 102. Therefore, a reference position where the horizontal beam 102 and the vertical beam 103 are perpendicular (when installed horizontally) It is in a “wobbled” state that cannot be fixed at the position of () and does not have a reference shape. Therefore, special measurements and adjustments are required even when the protective fence is installed horizontally, and when it is installed on a slope, the reference position cannot be set, making adjustments according to the inclination difficult. Problems arise.

  Further, in order to prevent the “waving” state at the time of installation, the rivet 105 is strongly caulked to increase the frictional resistance that the vertical beam 103 rotates. It is conceivable not to do so. In this case, since the angle between the horizontal beam 102 and the vertical beam 103 cannot be changed unless a certain amount of force is applied, it is difficult to finely adjust the angle according to the inclination that requires delicate force adjustment. Problem arises.

  Therefore, the object of the present invention is to solve the above-mentioned problems, and it is possible to fix the horizontal beam and the vertical beam at a reference position orthogonal to each other, and to adjust the horizontal position according to the inclination of the installation place without applying a large force. An object of the present invention is to provide a protective fence that can be installed on an inclined land where the angle between the beam and the vertical beam can be adjusted.

  In order to achieve the above-mentioned object, the first embodiment of the protective fence that can be installed on the sloping ground of the present invention includes a protective fence frame that is attached in a state where a plurality of vertical bars can rotate between upper and lower horizontal beams. A protective fence attached to an upright support column, wherein the vertical rail is rotatable only in one direction from a reference position orthogonal to the horizontal frame.

  In another embodiment of the protective fence that can be installed on an inclined land of the present invention, the horizontal frame and a vertical beam inserted into the inside of the horizontal frame from a long hole opened in the horizontal frame are joined by a pin, and the vertical beam is The vertical beam is attached in the vicinity of the first end of the long hole, and the vertical beam cannot be rotated from the reference position to the first end side due to interference between the vertical beam and the first end. It is possible to rotate to the second end side opposite to the end portion.

  According to another embodiment of the protective fence that can be installed on an inclined land of the present invention, the vertical beam can be rotated to the second end side until it comes into contact with the second end, and depending on the length of the long hole, The maximum rotation angle is determined.

  Another embodiment of the protective fence that can be installed on an inclined ground of the present invention is characterized in that the hole diameter of the hole opened in the vertical rail for inserting the pin is slightly larger than the outer diameter of the pin. To do.

  In another embodiment of the protective fence that can be installed on an inclined ground according to the present invention, the elongated hole has a shape that decreases in width as it proceeds from the first end to the second end. And

  In the guard fence of the present invention, the horizontal beam of the guard fence frame and the vertical beam can be fixed at a reference position perpendicular to each other. Therefore, when installing in a horizontal place, it is the same as the conventional welded guard fence for flat ground. Can be installed without any special adjustment.

  In addition, the guard fence of the present invention does not require resistance to rotation of the vertical beam as in the prior art, and can smoothly rotate the vertical beam with a small force, and fine adjustment in installation can be easily and accurately performed. It can be carried out.

  Further, when the protective fence according to the present invention is installed on an inclined ground, the reference position for installation in a horizontal position can be set, so that adjustment according to the inclination can be easily and accurately performed.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
(Protective fence structure)
FIG. 1 is a front view showing one embodiment of a protective fence that can be installed on an inclined land according to the present invention, FIG. 1 (a) shows an outline of the protective fence frame, and FIG. 1 (b) shows this protective fence frame. The outline of the entire protective fence attached to the upright column is shown.
As shown in FIG. 1 (a), the protective fence frame 1 has a structure in which a plurality of pipe-shaped vertical bars 3 are attached at predetermined intervals between upper and lower pipe-shaped horizontal beams 2. ing. The horizontal beam 2 and the vertical beam 3 are joined using a pin 4, and the vertical beam 3 can be rotated around the pin 4 to change the angle between the horizontal beam 2 and the vertical beam 3.

  The protective fence frame 1 is usually shipped to a construction site after being assembled in a factory up to the shape shown in FIG. A bracket 6 is attached to the vertical beam 3 on both sides of the protective fence frame 1, and the protective fence frame 1 is erected on the foundation using the bracket 6 as shown in FIG. The protective fence is completed by being attached to the support column 7.

  Next, the structure of the guard fence frame 1 will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is an enlarged front view of the area indicated by A in FIG. 1. FIG. 2 (a) shows that the horizontal beam 2 and the vertical beam 3 are at a reference position in a vertical state, and FIG. ) Shows a position where the horizontal beam 2 and the vertical beam 3 are in an inclined position at an oblique position. FIG. 3A is a cross-sectional view as seen from the arrow B in FIG. 2A, and shows a mounting structure of the horizontal beam 2 and the vertical beam 3. FIG. 3B is a view as seen from the arrow C in FIG. 2A, and shows the shape of the long hole 5 for avoiding interference when the vertical rail 3 rotates.

  As shown in detail in FIG. 3A, the horizontal beam 2 has a pin hole 2a, and the vertical beam 3 inserted into the horizontal beam 2 has a pin hole 3a. The vertical beam 3 and the horizontal beam 2 are connected in a rotatable state. The inserted pin 4 is fixed to the transverse beam 2 by welding or the like. The diameter of the pin hole 3a formed in the vertical beam 3 is slightly larger than the outer diameter of the pin 4, and the vertical beam 3 can be smoothly rotated without applying a large force.

Further, a long hole 5 as shown in FIG. 3 (b) is formed in a portion where the vertical beam 3 is inserted in the horizontal beam 2, so that the vertical beam 3 can rotate around the pin 4 without interference. A space is provided. However, the vertical rail 3 is attached in the vicinity of one end portion (referred to as a first end portion) of the long hole 5, and the end portion (referred to as a second end portion) on the opposite side of the long hole 5. ) Side, that is, in the direction of the space of the long hole 5, but the vertical rail 3 and the first end are in contact with each other, so that it cannot be rotated to the first end side. Yes.
In addition, the shape of the long hole 5 has a so-called oval shape in which the width becomes narrower from the first end to which the vertical rail 3 is attached to the second end on the opposite side. .

  This will be explained with reference to FIG. 2. The long hole 5 is up and down and the direction of the long hole is reversed. As shown in FIG. 2A, the reference position where the horizontal beam 3 and the vertical beam 3 are orthogonal to each other. Thus, the vertical beam 3 can rotate in the direction of the arrow E on the second end side with respect to the upper horizontal beam 2, but cannot rotate to the first end side in the opposite direction. Similarly, the vertical beam 3 can rotate in the direction of the arrow F on the second end side with respect to the lower horizontal beam 3, but cannot rotate to the first end side in the opposite direction. . Accordingly, the protective fence frame can take an inclined position in which the vertical beam 3 and the horizontal beam 2 are inclined in the direction as shown in FIG. 2B, but in the opposite direction, in FIG. ) Cannot be tilted from the reference position indicated by In other words, it is possible to fix the position at the reference position where the horizontal beam 2 and the vertical beam 3 are orthogonal to each other.

In the rotatable direction, the vertical beam 3 can be rotated until it comes into contact with the second end of the long hole 5. The length L of the long hole 5 allows the vertical beam 3 to be rotated. The maximum inclination angle θ is determined. Although this maximum inclination angle varies depending on the installation location, it can be applied to most installation locations as long as it takes around 30 degrees.
The above description has been made using the upper lateral beam 3, but the lower lateral beam 3 has the same structure. Each vertical beam 3 has the same structure, and the angle of the horizontal beam 2 and the vertical beam 3 can be adjusted in accordance with the inclination of the inclined ground as the entire protective fence frame.

(Example)
Next, one embodiment of a protective fence that can be installed on an inclined ground according to the present invention will be described with reference to the above-described drawings. The main dimensions of the protective fence of this embodiment are shown below.
Main dimensions of the guard fence frame 1 Length of the guard fence frame: about 1900 mm (substantially the same as the length of the transverse beam 2), see FIG.
Protective fence frame height: about 950 mm (same as the length of the vertical beam 3 plus the pipe diameter of the horizontal frame 2), see FIG. 1 (a).
Mounting pitch of the vertical beam 3: about 150 mm, see FIG.
The height of the support | pillar 7: About 1200 mm, refer FIG.1 (b).
Maximum inclination angle of vertical beam 3: about 30 degrees

  Next, members constituting the protective fence frame 1 will be described. The outer diameter D of the pipe-shaped vertical rail 3 is 25 mm, and the length L of the long hole 5 is 45 mm. (See FIG. 2 (a).) As shown in FIG. 3 (b), the shape of the elongated hole 5 is from the first end to which the vertical rail 3 is attached to the second end on the opposite side. As it progresses, it has a so-called egg shape that narrows. Further, the diameter of the pin hole 3a for inserting the pin 4 opened in the vertical beam 3 is 5.5mm with respect to the outer diameter of the pin 4 being 5.5mm, and the vertical beam can be smoothly smooth without requiring a large force. 3 can be rotated. (See FIG. 3 (a).)

  As a material of the structural member of the protective fence, the horizontal beam 2, the vertical beam 3, and the support column 7 are both made of steel pipes, and the inside thereof is plated for rust prevention. Further, as shown in FIG. 1, a drain hole 10 is formed in the lower portion of the lower lateral beam 2, and corrosion due to accumulated water can be prevented. Furthermore, if a sponge or the like is inserted into the opening of the long hole 5 formed in the lower horizontal beam 3, water and foreign matter enter the horizontal beam 3 without hindering the rotation of the vertical beam 3. Can be prevented.

  Next, the members for attaching the protective fence frame 1 to the support column 7 will be described with reference to FIG. 1. The bracket 6 is attached to the vertical beam 3 at both ends of the protective fence frame 1 at two locations on the upper and lower sides. , And a set of two plates attached at a predetermined interval. The protective fence frame 1 can be attached to the column 7 by sandwiching the bracket 8 attached to the column 7 between the two plates. Both brackets 7 and 8 have bolt holes and can be fixed with bolts and nuts.

  As described above, in the protective fence that can be installed on the sloping ground according to the present invention, the horizontal beam 2 and the vertical beam 3 can be fixed at the reference position orthogonal to each other. Similar to the joint guard fence, it can be installed without any special positioning adjustments. In addition, since the guard fence can be fixed at the reference position, it is not necessary to resist the rotation of the vertical rail 3 to make it difficult to rotate, and the height can be easily finely adjusted without applying a large force. be able to. Moreover, when installing on an inclined ground, since the reference position is fixed, it is possible to install with a precise inclination with one end of the protective fence 1 as a reference.

(Protective fence installation method)
Next, the installation method of the guard fence of this invention is demonstrated using FIG. First, as shown in FIG. 4A, the columns 7 are installed on the foundation at intervals corresponding to the length of the guard fence 1. Then, as shown in FIG. 4B, the prefabricated guard fence 1 is attached to the support posts 7 on both sides using the brackets 6 attached to both ends. First, one end of the protective fence frame 1 is attached to one of the columns 7, and then the angle of the horizontal beam 2 and the vertical beam 3 and the height of the bracket 6 at the other end are adjusted according to the inclination, Attach to the column 7.
As a detailed mounting method, the bracket 8 attached to the column 7 is inserted between the two plates of the bracket 6, and the protective fence frame 1 is attached to the column 7. Since the bolt holes are formed in the bracket 6 and the bracket 8, the bracket 6 and the bracket 8 can be fixed by the bolt nut 9. Further, when the guard fence frame 1 is transported, the guard fence frame 1 can be fixed in the shape of the reference position, so that it can be handled in the same manner as a normal guard fence frame.

(Other embodiments)
In the above-described embodiment, the horizontal beam and the vertical beam have a round pipe shape, but a square pipe can also be used, and other shape steels can also be used. Further, the material is not limited to steel, and any metal such as stainless steel, aluminum or the like can be used. Furthermore, resin etc. can also be utilized depending on a use.

In the above-described embodiment, the vertical beam is configured to rotate in only one direction from the position perpendicular to the horizontal beam due to the positional relationship between the long hole formed in the horizontal beam and the vertical beam. It is possible to adopt a structure that is attached and does not rotate in one direction.
Furthermore, the embodiment of the present invention is not limited to the above-described embodiment, and various other embodiments can be considered.

It is a front view which shows the outline | summary of the protection fence which can be installed in the sloping ground of this invention, (a) shows the outline | summary of a protection fence frame, (b) shows the outline | summary of the whole protection fence. It is the front view which expanded the area | region shown by A of FIG. 1 (a), (a) shows the place in a reference position, (b) shows the place in an inclination position. It is a figure which shows the relationship between a horizontal beam and a vertical cross, (a) is sectional drawing seen from the arrow B of Fig.2 (a), (b) is the figure seen from the arrow C of Fig.2 (a). It is. Explanatory drawing of the installation method of the protection fence of this invention. It is a figure which shows the structure of the protection fence which can be installed in the conventional slope, (a) is a front view which showed the attachment state of an upper horizontal beam and a vertical cross, (b) is arrow H of this (a) It is sectional drawing seen from.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guard fence frame 2 Horizontal beam 2a Pin hole 3 Vertical beam 3a Pin hole 4 Pin 5 Long hole 6 Bracket 7 Post 8 Bracket 9 Bolt nut 101 Horizontal beam 103 Vertical beam 103a Rivet hole 104 Flat plate 104a Rivet hole 105 Rivet

Claims (5)

A protective fence frame attached in a state in which a plurality of vertical bars can rotate between upper and lower horizontal beams is a protective fence attached to a standing column,
A protective fence that can be installed on an inclined ground, wherein the vertical beam is rotatable only in one direction from a reference position orthogonal to the horizontal beam. The horizontal beam and the vertical beam inserted into the horizontal beam from a long hole formed in the horizontal beam are joined by a pin, and the vertical beam is in the vicinity of the first end of the long hole. Installed,
The vertical beam cannot rotate from the reference position to the first end side because the vertical beam interferes with the first end,
The protective fence that can be installed on an inclined ground according to claim 1, wherein the protective fence can be rotated to a second end side opposite to the first end portion.   The vertical beam is rotatable to the second end side until it comes into contact with the second end portion, and the maximum rotation angle of the vertical beam is determined by the length of the long hole. The protection fence which can be installed in the sloping ground of Claim 2 to do.   The protective fence that can be installed on an inclined ground according to claim 2 or 3, wherein a diameter of a hole formed in the vertical beam for inserting the pin is slightly larger than an outer diameter of the pin.   The inclined hole according to any one of claims 2 to 4, wherein the long hole has a shape that decreases in width as it proceeds from the first end to the second end. Protective fence that can be installed.

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