JP2007063834A - Guard fence support and guard fence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guard fence support which can be arbitrarily set on a place of a gradient, and does not require a large-scale reinforcing structure even if it is for use in application that a large shock such as a collision of a vehicle may be imposed thereon. <P>SOLUTION: A support body 20 is made rotatable by fitting arched convex portions 1 and arched convex portions 4 to each other, and can be arbitrarily set on a place of a gradient. By to the structure of the guard fence support, each flange 3 is inserted into a mounting groove 2 and bolted to the groove, and therefore even if a large shock is imposed, stress is dispersed to the mounting groove 2 and a fitting portion between the convex portion 1 and the concave portion 4, to thereby avoid the concentration of the stress near a bolt B. As a result even if the guard fence support is for use in the application that a collision etc. of a vehicle may occur, the large-scale reinforcing structure is not required. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a protective fence post and a protective fence, which are installed mainly on the side edges of roads and bridges and have a protective fence formed by attaching a horizontal rail.

  A guard fence formed by attaching a horizontal rail to a support can be easily formed by attaching the support and the vertical rail vertically if it is a flat place. However, when installing on a side edge of a road with a slope, it is necessary to install a cross rail along the slope. However, even in that case, it is necessary to install the column so that it is perpendicular to the horizontal plane, and there is no problem if the column can be embedded, but it is installed using the anchor plate of the column on the anchor bolt embedded in the ground. In such cases, it is necessary to pre-tilt the anchor plate of the column, and for the column for the guard fence used for the gradient part, careful survey of the gradient and precise processing of the column are required. It was coming.

  As a protective fence post for eliminating such complicated work, for example, a rail cradle is connected to the upper end of the post in a pivotable manner by a fastening bolt member and can be fastened at an arbitrary inclination angle. The structure is such that it can be fixed by a bolt member. At the lower end of the support column, the support column base is pivoted in the same direction as the rail support unit and is connected and pivotally connected by a fastening bolt member, and an arbitrary inclination angle is obtained. For example, Patent Document 1 discloses a guard fence post configured to be fixed by the fastening bolt member.

  In addition, a mounting portion fixed to the lateral frame of the staircase and left and right side plate portions provided on the mounting portion so as to stand upright are provided, and the left and right side plate portions include brackets having arc-shaped long holes, There is disclosed a handrail attachment device configured to fix a support column to a bracket by inserting a bolt into an attachment hole provided in the support column and the elongated hole and tightening with a nut (for example, Patent Document 2).

Actual application No. 3-63841 CD-ROM (No. 7-44104) No. 60-297572 microfilm (Japanese Utility Model Publication No. 62-156470)

  However, in the guard fence post as described in Patent Document 1, the pillar support is supported and fixed by the fastening bolt member with the lower end of the pillar sandwiched between the pillar support plates. When a large impact is applied to the protective fence, stress concentrates in the vicinity of the fastening bolt member, the pillar support plate is deformed, the pillar rotates around the fastening bolt member, or the fastening bolt There is a possibility that the support column support plate may be broken near the member, and in order to prevent such a problem, a large reinforcing structure such as extremely increasing the thickness of the member is necessary.

  Similarly, with respect to the protective fence support as described in Patent Document 2, the side plate portion may be deformed or the bolt may slide in the long hole and the support may be rotated. In order to prevent this, a large reinforcing structure such as extremely increasing the thickness of the member is necessary.

  The present invention has been made in view of the problems as described above, and can be freely installed against a gradient. However, even when it is used for an application in which a great impact such as a collision of a vehicle is applied, the present invention is not large. It is intended to provide a protective fence post and a protective fence that do not require a reinforcing structure.

  In order to achieve the above object, the present invention is configured as follows. That is, the protective fence support according to the present invention includes a base portion and a support column body, the base portion is provided with a convex portion having an arcuate upper surface, and an attachment groove having an upper opening, The column main body is provided with a concave portion cut out in an arc shape at the lower end and a flat flange portion, the convex portion is fitted into the concave portion, and the flange portion is inserted into the mounting groove. The flange portion is bolted to the base portion.

  According to the protective fence support according to the present invention, the projecting body and the recessed section are fitted in an arc shape so that the support body can be rotated and installed freely against the gradient. However, since the flange part is inserted into the mounting groove and bolted, stress is applied to the fitting groove or the fitting part between the convex part and concave part even when a large impact is applied. Can be prevented from being concentrated in the vicinity of the bolts, and even when used in applications where a vehicle collision or the like can be considered, a large reinforcing structure can be eliminated.

  Further, the column main body can be rotated with respect to the base portion with respect to the base portion as long as it can be rotated by a convex portion and a concave portion with respect to the base portion with a line on the lower surface of the base portion as a rotation axis. Even when the angle is set to a certain angle, the designed strength can be applied as it is, with the height of each part of the column main body from the ground surface being constant.

  Further, the convex portion is provided in the mounting groove, and if the concave portion is provided at the lower end of the flange portion, the fitting between the convex portion and the concave portion is performed in the mounting groove, It is preferable that the convex portion and the concave portion can be securely fitted and the column main body can be rotated without misalignment between the convex portion and the concave portion.

  Moreover, the guard fence according to the present invention is such that the base part of the guard fence post according to any one of claims 1 to 3 is attached to an anchor bolt embedded in the ground cover and a transverse beam is attached to the transverse beam receiving part. It is characterized by being formed.

  According to the protective fence according to the present invention, the support column and the cross beam can be installed freely with respect to the gradient, but a large reinforcing structure is required for the support column even when it is used for an application where a great impact such as a vehicle collision occurs. The advantages in terms of cost and appearance can be increased.

  According to the protective fence support according to the present invention, the projecting body and the recessed section are fitted in an arc shape so that the support body can be rotated and installed freely against the gradient. However, since the flange part is inserted into the mounting groove and bolted, stress is applied to the fitting groove or the fitting part between the convex part and concave part even when a large impact is applied. Can be prevented from being concentrated in the vicinity of the bolts, and even when used in applications where a vehicle collision or the like can be considered, a large reinforcing structure can be eliminated.

  Further, according to the guard fence according to the present invention, the support column and the cross beam can be installed freely against the gradient. However, even when used in applications where a great impact such as a vehicle collision is applied, the support column has a large reinforcing structure. This is not necessary, and the advantages in terms of cost and appearance can be increased.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

  1 to 4 show an embodiment of a support fence post according to the present invention, and FIG. 1 is a perspective view showing an example of a base portion. The base portion 10 has an outer wall 12 and an inner wall 13 projecting from the upper surface near both ends of the base plate 11 at a predetermined interval, and the mounting groove 2 is formed between the outer wall 12 and the inner wall 13. Has been made. The bottom surface of the mounting groove 2 is provided with a convex portion 1 having an arcuate top surface. Between the inner side walls 13 of the base plate 11, an anchor bolt hole 111 penetrating in the vertical direction for inserting an anchor bolt for fixing to the ground surface is provided. Further, the outer wall 12 is provided with a bolt hole 121 through which a bolt for attaching the column main body is inserted, and the inner wall 13 is provided with a screw hole 131 in which a thread is engraved on the inner surface. Further, a notch 132 is provided near the center of the inner wall 13 in the left-right direction so that a wave (described later) of the column main body can be rotatably inserted. The notch 132 is opened upward and the opening interval is gradually increased from the lower end toward the upper end.

  Next, FIG. 2 is a perspective view showing details of a lower end portion of the column main body. The column main body 20 is formed by using a steel material having an H-shaped cross section, and the flange portion 3 provided at an interval is formed into an integral cross-sectional H shape by a wave portion 31 provided between the flange portions 3. The lower end of the flange portion 3 is cut out in an arc shape to form a concave portion 4, and a through hole 32 having a long hole is provided above the concave portion 4 of the flange portion 3. The flange portion 3 is provided in two places in a C shape. Furthermore, both side portions of the concave portion 4 in the flange portion 3 are inclined portions 41 that are inclined upward toward both ends of the flange portion 3. The flange portion 3 and the wave 31 extend further upward, and a beam pipe, a lattice panel, and the like are attached to the upper portion (not shown) to form a protective fence.

  FIG. 3 is a perspective view showing attachment of the column main body 20 to the base portion 10. The flange portion 3 of the column main body 20 is inserted into the mounting groove 2 provided in the base portion 10 from the lower end, and the convex portion 1 and the concave portion 4 each having an arc shape are fitted. In a state where the convex portion 1 and the concave portion 4 are fitted, the bolt B is inserted into the bolt hole 121 of the outer wall 12, and the screw portion B1 of the bolt B is further inserted into the through hole 32 of the flange portion 3. Thereafter, the screw portion B1 is fastened to the screw hole 131 of the inner wall 13 using the bolt head B2. The column main body 20 is attached to the base portion 10 by fastening the bolts in such a manner with respect to each of the four bolt holes 121, the through holes 32, and the screw holes 131 provided in the base portion 10 and the column main body 20.

  FIG. 4 is an AA arrow view in FIG. 3 in a state where the column main body 20 is attached to the base portion 10, and shows a state in which the column main body 20 is erected perpendicularly to the ground plane. Since the convex portion 1 and the concave portion 4 are fitted and the fitting portion 5 is formed, even when a great load is applied to the column main body 20, stress is also distributed to the fitting portion 5. The stress is prevented from concentrating on the bolt B. The wave 31 of the column main body 20 is attached to the center of the flange portion 3, and the center of the column main body 20 in the left-right direction is the center line C 1 of the wave 31, but the center line C 1 and the lower surface of the base portion 10 The intersection is the rotation axis C of the column main body 20.

  That is, the rotation axis C is a line extending in the front-rear direction of the lower surface of the base portion 10, and the arc-shaped shapes of the convex portion 1 and the concave portion 4 are arc-shaped around the rotation axis C. Therefore, when the column body 20 is rotated in the left-right direction by the fitting portion 5, the column body 20 is rotated around the rotation axis C as shown in FIG. First, FIG. 5A shows a state in which the column main body 20 is rotated to the left by about 20 degrees. However, as the wave 31 rotates about the rotation axis C, the column main body 20 is rotated. The mounting bracket (not shown) attached to the column main body 20 so as to rotate about the rotation axis C is a distance from the rotation axis C even if the mounting angle of the column main body 20 is changed. The beam position can be kept constant even when standing at various inclined locations. Even when the column main body 20 is rotated, the convex portion 1 and the concave portion 4 are formed in an arc shape, so that the fitting portion 5 is held and stress concentration near the bolt B described above is concentrated. The state to be prevented is maintained.

  Moreover, when the notch part 132 provided in the inner wall 13 is made wider as it goes upward, the inserted wave 31 moves to the left and right as the column main body 20 rotates. The inner wall 13 does not get in the way, and both side portions of the concave portion 4 of the flange portion 3 are inclined portions 41 that are inclined upward, so that the column main body 20 is maximized to one of the left and right sides. When it rotates, the corner | angular part of the lower end of the flange part 3 is made not to become obstructive. Furthermore, the column body 20 can be fixed at an arbitrary angle by forming the through-hole 32 as a long hole arranged in a C shape.

  Next, (b) shows a state rotated about 20 degrees in the right direction, but the fitting part 5 is held in the same manner as in the state rotated in the left direction. The angle at which the column main body 20 can be rotated in the left-right direction is not limited to the above-described 20 degrees, but the degree of opening of the notch portion 132, the inclination angle of the inclined portion 41, and the length of the long hole of the through hole 32 However, if the pivotable angle is too large, the porosity of the base portion 10 and the column main body 20 may increase, leading to a decrease in strength as a protective fence column. And, since the case corresponding to the very big road inclination cannot be considered, it is preferable to set the angle at which the column main body 20 can rotate to about 1 to 30 degrees.

  FIG. 6 is a longitudinal sectional view showing details of the bolt mounting state. The flange portion 3 is inserted into the mounting groove 2, and a bolt B is inserted into the through hole 32, and the bolt B has a screw portion B 1 tightly connected to the screw hole 131, but the bolt hole 121 of the outer wall 12 is Since the bolt head B2 is sized so that it can be inserted, the flange portion 3 is sandwiched between the bolt head B2 and the inner wall 13, thereby suppressing the rotation of the column body 2 and the column body. The mounting angle of 20 with respect to the base portion 10 is maintained. It is preferable to place a washer such as a locking stopper or a spring between the bolt head B2 and the flange portion 3 so that the rotation of the column main body 20 can be further suppressed.

  FIG. 7 is a longitudinal sectional view showing an example of a modification of the bolt attachment state. The bolt hole 121 is a counterbore hole, and a part of the outer wall 12 is sandwiched between the bolt head B2 and the flange portion 3, the inner wall 13 side of the flange portion 3 is opened, and the bolt B A nut N is screwed to the screw portion B1. By sandwiching the flange portion 3 between the nut N and a part of the outer wall 12, the rotation of the column main body 2 is suppressed and the mounting angle of the column main body 20 with respect to the base portion 10 is maintained. It is made so that. Similarly, it is preferable to place a washer such as a locking stopper or a spring between the nut N and the flange portion 3 so that the rotation of the column main body 20 can be further suppressed.

  As an example of deformation, the screw hole 131 of the inner wall 13 is not provided with a screw thread, the screw part B1 of the bolt B is inserted into the bolt hole 31 and the screw hole 131, and the outer wall 12 near the screw part B1 is opened. Then, the nut N may be screwed to sandwich the flange portion 3 between the inner wall 13 and the nut N. With such a configuration, the nut N can be tightened from the outside. Tightening can be performed more reliably.

  Since the base portion 10 is used for a protective fence post, it is preferable that the base portion 10 is made of a metal having high strength, and is preferably formed using a metal material such as steel, stainless steel, aluminum, or zinc. . Further, the convex portion 1 and the mounting groove 2 are preferably formed integrally to increase the strength, and die casting or casting using the above-mentioned metal material can be suitably used, and steel casting is particularly suitable. is there.

  Further, the column main body 20 is not limited to the one having an H-shaped cross section, but a general-purpose H-shaped steel or one in which the flange portion 3 and the wave 31 are integrated by welding or the like can be suitably used. Moreover, it is preferable to form using metal materials, such as steel, stainless steel, aluminum, zinc, etc. which can obtain high intensity | strength similarly to the base part 10, and steel is more suitable. The column main body 20 provided with these flange portions 3 can be attached to the base portion 10 by processing such as cutting and punching. Further, when steel is used for the base 10 and the column main body 20, it is preferable to prevent corrosion by performing a surface treatment such as plating or coating of zinc or the like.

  FIG. 8 is a front view showing an embodiment of the protective fence according to the present invention. The guard fence support used for forming the guard fence uses the one shown in FIGS. 1 to 7 described above. First, (a) shows a state where the guard fence 100 is installed on a horizontal ground surface. The beam 30 is attached to the support fence 6 formed by attaching the column main body 20 to the base portion 10 to the mounting bracket 6 attached to the column main body 20 with the mounting bolts 61, and the beam 30 is arranged in three upper and lower stages. It is attached over. The height H from the ground surface to the upper surface of the uppermost beam 30 is stipulated in the protective fence installation guidelines as 800 mm or more for a crossing prevention fence and 1100 mm or more for a fall prevention fence.

  Next, (b) shows a state in which the base body 20 is installed on an inclined ground surface, and the base body 20 is brought into close contact with the ground surface by allowing the column main body 20 to turn in the left-right direction with respect to the base part 10. Even if the column main body 20 is fixed to the horizontal plane, the column main body 20 can be erected vertically with respect to the horizontal plane by rotating the column main body 20 in the left-right direction. Further, since the mounting bracket 6 is also turnable in the left-right direction with respect to the column main body 20, even if the column main body 20 is erected vertically to the horizontal plane, the mounting bracket 6 is rotated in the left-right direction. Thus, the beam 30 can be installed along the inclination.

  Here, as shown in FIG. 5, the column main body 20 is rotated about a rotation axis C that is the lower surface of the center of the base portion 10 so that the height of the mounting bracket 6 from the ground surface is perpendicular to the horizontal plane. The height of the beam 30 including the uppermost stage is the same as when standing upright, and the height of the beam 30 is also the same, and even when installed on an inclined ground surface by maintaining the height H, It is prevented that the function as a fall prevention fence is impaired.

It is a perspective view which shows the base part in one Embodiment of the support | pillar for protection fences concerning this invention. It is a perspective view which shows the support | pillar main body in one Embodiment of the support | pillar for protection fences concerning this invention. It is a perspective view which shows attachment of the support | pillar main body to the base part in one Embodiment of the support | pillar for protection fences concerning this invention. It is an AA arrow line view of FIG. 3 in the state which attached the support | pillar main body to the base part. It is an AA arrow directional view of FIG. 3 which shows the state which rotated the support | pillar main body. It is a longitudinal cross-sectional view which shows the detail of the attachment state with the volt | bolt of the support | pillar main body to a base part. It is a longitudinal cross-sectional view which shows an example of the deformation | transformation of the attachment state with the volt | bolt of the support | pillar main body to a base part. It is a front view showing one embodiment of a protection fence concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Convex part 2 Mounting groove 3 Flange part 4 Concave part 5 Insertion part 10 Base part 20 Prop body 30 Beam 100 Guard fence C Rotating shaft

Claims (4)

The base portion is provided with a convex portion whose upper surface is arcuate and a mounting groove having an upper opening, and the strut body is cut out in an arc shape at the lower end. A concave portion and a flat flange portion, the convex portion is fitted into the concave portion, the flange portion is inserted into the mounting groove, and the flange portion is bolted to the base portion. A support fence post characterized by being made. 2. The protective fence according to claim 1, wherein the column main body is rotatable by a convex portion and a concave portion with respect to the base portion with a line on the lower surface of the base portion as a rotation axis. Prop for. 3. The guard post according to claim 1, wherein the convex portion is provided in the mounting groove, and the concave portion is provided at a lower end of the flange portion. The anchor bolt embedded in the ground cover is formed by attaching the base portion of the guard fence post according to any one of claims 1 to 4 and attaching a transverse beam to the transverse beam receiving portion. Protective fence.