JP2015078544A - Guard fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guard fence capable of having its main bracket easily prevented from deforming or breaking.SOLUTION: A guard fence 100 includes: two main supports 10 which are stood side by side; an intermediate support 20 which is stood between the two main supports 10; an upper-stage beam 40a and a lower-stage beam 30a which are installed on the two main supports 10, and fixed; an upper-stage intermediate bracket 22 which is fitted to the road-side front of the intermediate support 20, and supports the upper-stage beam 40a without fastening it; and a lower-stage intermediate bracket 21 which is fitted to the road-side front of the intermediate support 20, and supports the lower-stage beam 30a.

Description

  The present invention relates to a guard fence for a vehicle, and more particularly to a structure for attaching a guard pipe to a column.

  2. Description of the Related Art Conventionally, a vehicle protection fence is provided along a road (roadway) in order to prevent the vehicle from traveling off the road and traveling outside the road. Such a guard fence for a vehicle includes a guard rail configured by attaching a corrugated plate material to a side surface of a support column, and a guard pipe configured by attaching a cylindrical beam to a side surface of the support column. Since the guard pipe is composed of a rod-like body unlike the guard rail, there is an advantage that the area shielded by the fence is small. Therefore, when the guard pipe is provided at the boundary between the sidewalk and the roadway (walking road boundary), the visibility of the sidewalk is improved, and it is possible to cope with the jumping out of people from the sidewalk to the roadway with high probability.

  In such a guard pipe, the beam is attached to the front surface of the support on the roadway side via a bracket (joint fitting). As a document disclosing such a vehicle protective fence using a bracket, there is one described in Patent Document 1, for example. In the vehicle guard fence of Patent Document 1, a cylindrical cross-sectional bracket is fixed to the front surface of a support column, and a central portion of a cylindrical inner sleeve is attached to the bracket, and the end of the beam is attached to both ends of the inner sleeve. The part is fitted and fixed.

Japanese Patent No. 3998210

  By the way, in the conventional guard fence described in Patent Document 1 or the like, there is a problem that the bracket is deformed or broken when a large load is applied to the beam due to snow or the like from above. And such a deformation | transformation and damage of a bracket become easy to generate | occur | produce as the length of a beam becomes long.

  For such a problem, it is conceivable to provide an intermediate strut and an intermediate bracket between adjacent main struts, in addition to the main strut and the main bracket supporting the normal inner sleeve. That is, an intermediate column and an intermediate bracket that support, for example, the central portion of the beam in the longitudinal direction instead of the central portion of the inner sleeve instead of the central portion of the inner sleeve are provided, and a part of the load from above the beam is provided between the intermediate column and the intermediate portion. It is conceivable to make the bracket bear.

However, in the case where an intermediate column is provided as a follow-up to the existing main column on which the beam is installed, if a bracket having a cylindrical cross section is used as the intermediate bracket, the removed pipe is removed after the beam is removed from the main column. Need to be inserted into the intermediate bracket. Therefore, it takes time to install the intermediate strut and the intermediate bracket.
Then, an object of this invention is to provide the protection fence which can suppress easily generation | occurrence | production of a deformation | transformation and damage of a main bracket in view of this problem.

  In order to achieve the above object, a protective fence according to an aspect of the present invention includes two main struts that are erected side by side, an intermediate strut that is erected between the two main struts, and the two It is characterized by comprising a beam erected and fixed on the main column, and an intermediate bracket attached to the front surface of the intermediate column on the roadway side and supporting the beam without fastening.

  Here, the front end of the intermediate bracket on the road side is positioned below the beam, protrudes from the lower end of the beam toward the road side, and is positioned closer to the intermediate column than the front end of the beam on the road side. May be.

  ADVANTAGE OF THE INVENTION According to this invention, the guard fence which can suppress easily generation | occurrence | production of a deformation | transformation and damage of a main bracket is realizable.

It is a front view which shows the structure of the protection fence which concerns on embodiment of this invention. It is a top view which shows the structure of the protection fence which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the protection fence which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the protection fence which concerns on embodiment of this invention. It is a figure which shows the structure of the support part of the upper stage intermediate bracket of the protection fence which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the whole structure of the protection fence 100 which concerns on embodiment of this invention is demonstrated using FIGS.

  FIG. 1 is a front view showing a configuration of a protective fence 100 according to the present embodiment. FIG. 2 is a plan view showing the configuration of the protective fence 100 according to the present embodiment. FIG. 3 is a cross-sectional view (a cross-sectional view taken along the line AA ′ in FIG. 1) showing the configuration of the protective fence 100 according to the present embodiment. FIG. 4 is a cross-sectional view (a cross-sectional view taken along line BB ′ in FIG. 1) showing the configuration of the protective fence 100 according to the present embodiment.

  1 is a front view of the protective fence 100 when viewed from the front of the main column 10, and FIG. 2 is a plan view of the protective fence 100 when viewed from the upper side of the main column 10. FIG. 4 is a cross-sectional view of the protective fence 100 as viewed from the extending direction of the upper beams 40a and 40b and the lower beams 30a and 30b.

  The protective fence 100 is attached to a plurality of main struts 10 provided along the roadway, intermediate struts 20 provided between the plurality of main struts 10, and a side surface (front surface) of the main strut 10 on the roadway side. The lower main bracket 11 and the upper main bracket 12, and the lower intermediate bracket 21 and the upper intermediate bracket 22 attached to the front surface of the intermediate column 20 are provided.

  The protective fence 100 is further fitted and fixed to the lower inner sleeve 60 held by the lower main bracket 11 and both ends of the lower inner sleeve 60, and in substantially the same direction (extending direction in FIGS. 1 to 4). Are provided with cylindrical lower beams 30a and 30b.

  The protective fence 100 is further fitted and fixed to the upper inner sleeve 70 held by the upper main bracket 12 and both end portions of the upper inner sleeve 70, and in substantially the same direction (extending direction in FIGS. 1 to 4). Are provided with cylindrical upper beams 40a and 40b.

  The outer diameter of the lower inner sleeve 60 is smaller than the inner diameters of the lower beams 30a and 30b, and the outer diameter of the upper inner sleeve 70 is smaller than the inner diameters of the upper beams 40a and 40b.

  The main column 10 and the intermediate column 20 are both extended in the direction perpendicular to the ground and have substantially the same height. The lower main bracket 11 and the lower intermediate bracket 21 are attached at substantially the same height position as the main column 10 and the intermediate column 20, and the upper main bracket 12 and the upper intermediate bracket 22 are also substantially the same as the main column 10 and the intermediate column 20. Installed at the same height.

  The lower main bracket 11 is a mounting bracket for attaching the lower beams 30a and 30b to the front surface of the main strut 10, and the main strut is formed by bolts arranged to penetrate the main strut 10 and the lower main bracket 11 in the front-rear direction. 10 is fixed to the front surface. The lower main bracket 11 is fixed to the central portion of the lower inner sleeve 60 by bolts arranged so as to penetrate the central portion of the lower inner sleeve 60 and the lower main bracket 11 in the vertical direction. Both ends of the lower inner sleeve 60 are fixed to the lower beams 30a and 30b by bolts arranged so as to penetrate the both ends of the lower inner sleeve 60 and the lower beams 30a and 30b in the vertical direction. Thus, both end portions of the lower beam 30a and 30b are fixed to the front surface of the main column 10 via the lower main bracket 11 and the lower inner sleeve 60.

  The lower main bracket 11 is a mounting bracket formed by bending a plate material. The vertical wall portion 11b extends in the vertical direction attached to the front surface of the main support column 10, and protrudes forward from both upper and lower ends of the vertical wall portion 11b. The lower inner sleeve 60 is inserted and held in the holding portion 11c.

  The vertical wall portion 11b is fixed to the main column 10 with bolts arranged so as to penetrate the main column 10 and the vertical wall portion 11b in the front-rear direction. The holding part 11c is fastened and fixed to the lower inner sleeve 60 by a fastener such as a bolt arranged so as to penetrate the lower inner sleeve 60 and the holding part 11c in the vertical direction.

  The upper main bracket 12 is a mounting bracket for attaching the upper beams 40 a and 40 b to the upper end of the main column 10, and is inserted into the upper end opening from above the main column 10. The upper main bracket 12 is fixed to the central portion of the upper inner sleeve 70 by bolts arranged so as to penetrate the central portion of the upper inner sleeve 70 and the upper main bracket 12 in the vertical direction. The both ends of the upper inner sleeve 70 are fixed to the upper beams 40a and 40b by bolts arranged so as to penetrate the both ends of the upper inner sleeve 70 and the upper beams 40a and 40b in the vertical direction. Thus, both end portions of the upper beam 40 a and 40 b are fixed to the upper end of the main column 10 via the upper main bracket 12 and the upper inner sleeve 70.

  The upper main bracket 12 includes a support cap 12b that covers the upper end of the main support column 10 and has a substantially cylindrical lower portion, and a holding portion 12c that is fixed to the front surface of the support cap 12b.

  The upper end of the column cap 12b is formed as a flat inclined surface that inclines downward in a single stream from the front side of the main column 10 toward the back side (side opposite to the roadway), and the upper part is substantially triangular in side view. It is made into a shape. A concave groove is formed on the entire outer peripheral surface of the lower portion of the support cap 12b, and a belt-like reflector in which spherical glass beads are arranged at intervals in a synthetic resin is wound in the concave groove. . An insertion portion to be inserted into the opening at the upper end of the main column 10 protrudes from the lower part of the concave groove of the column cap 12b. The column cap 12b is fixed to the main column 10 with bolts arranged so as to penetrate the main column 10 and the column cap 12b in the front-rear direction.

  The holding portion 12c includes a vertically long contact plate portion that is in contact with the front surface of the support cap 12b, and a vertical plate portion that protrudes diagonally forward from the both ends of the contact plate portion toward the front of the main support column 10. The upper inner sleeve 70 is inserted in the horizontal direction between the vertical plate portions and has a short cylindrical portion inserted therein. The short cylindrical portion is fastened and fixed to the upper inner sleeve 70 by a fastener such as a bolt arranged to penetrate the upper inner sleeve 70 and the short cylindrical portion in the vertical direction.

  The lower intermediate bracket 21 is a support fitting for supporting the middle portion in the extending direction of the lower beam 30a on the intermediate column 20, and is fixed to the front surface of the intermediate column 20 with a bolt. Thereby, the center part of the extending direction of the lower beam 30a is supported so as to be supported by the intermediate column 20 via the lower intermediate bracket 21. At this time, the lower beam 30a is not connected to the lower intermediate bracket 21 with a bolt like the lower main bracket 11, but is simply supported by the lower intermediate bracket 21 without a bolt. Therefore, the lower beam 30a is fixed to the main column 10 via the bolt and the bracket, but is not fixed to the intermediate column 20 via the bolt and the bracket.

  The lower intermediate bracket 21 is an L-shaped support bracket formed by bending a plate material, and extends vertically from the upper end of the vertical wall portion 21b and the vertical wall portion 21b extending in the vertical direction attached to the front surface of the intermediate support column 20. And a central portion in the extending direction of the lower beam 30a is simply mounted on the surface of the plate-like portion 21c without being fastened by fasteners such as bolts, rivets, pins, and band fittings. It is supported in a placed state.

  The vertical wall portion 21b is fixed to the intermediate column 20 with bolts arranged so as to penetrate the intermediate column 20 and the vertical wall portion 21b in the front-rear direction. The plate-like portion 21c has a front end 24 positioned in front of the lower end 32 of the lower beam 30a so that the plate-like portion 21c, that is, the lower intermediate bracket 21 does not protrude from the lower side of the lower beam 30a toward the roadway side. It is provided so as to be located behind the front end 31.

  The upper intermediate bracket 22 is a support fitting for supporting the central portion in the extending direction of the upper beam 40 a on the upper end of the intermediate column 20, and is attached to the upper end of the intermediate column 20. As a result, the central portion in the extending direction of the upper beam 40 a is supported so as to be supported by the intermediate column 20 via the upper intermediate bracket 22. At this time, the upper beam 40a is not connected to the upper intermediate bracket 22 by a bolt like the upper main bracket 12 but is simply supported by the upper intermediate bracket 22 without a bolt. Therefore, the upper beam 40a is fixed to the main column 10 via the bolt and the bracket, but is not fixed to the intermediate column 20 via the bolt and the bracket.

  The upper intermediate bracket 22 includes a support cap 22b that covers the upper end of the intermediate support 20 and has a substantially cylindrical lower portion, and a support portion 22c that is fixed to the front surface of the support cap 22b.

The upper end of the column cap 22b is a flat inclined surface that is inclined downward in a one-flow manner from the front side to the back side of the intermediate column 20, and the upper part thereof has a substantially triangular shape in side view. A concave groove is formed on the entire outer peripheral surface of the lower portion of the support cap 22b, and a belt-like reflector in which spherical glass beads are arranged at intervals in a synthetic resin is wound in the concave groove. . An insertion portion to be inserted into the opening at the upper end of the intermediate strut 20 projects from the lower portion of the concave groove of the strut cap 22b. The column cap 22b is fixed to the intermediate column 20 with bolts arranged so as to penetrate the intermediate column 20 and the column cap 22b in the front-rear direction.
Next, a detailed configuration of the support portion 22c of the upper intermediate bracket 22 according to the embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a diagram illustrating a configuration of the support portion 22c of the upper intermediate bracket 22 according to the present embodiment.

  5, (a) is a front view of the support portion 22c, (b) is a left view of the support portion 22c, (c) is a right side view of the support portion 22c, and (d) is a rear view of the support portion 22c. (E) is a top view of the support portion 22c, and (f) is a bottom view of the support portion 22c.

  The support portion 22c is a vertically long contact plate portion 53 that is in contact with the front surface of the support cap 22b, and a vertical plate that protrudes diagonally forward from the both side ends of the contact plate portion 53 toward the front of the intermediate support column 20. Portion 52 and a plate-like portion 51 that is laterally inserted between the vertical plate portions 52, and a central portion in the extending direction of the upper beam 40 a on the surface of the plate-like portion 51 is a bolt, a rivet, a pin And it is supported in the state which was simply mounted, without being fastened by fasteners, such as a band metal fitting.

  The plate-like portion 51 is bent so as to protrude downward in the front-rear direction, and has an arc shape along the outer peripheral surface of the upper beam 40a on the mounting surface of the upper beam 40a. The plate-like portion 51 has its front end 25 positioned in front of the lower end 42 of the upper beam 40a, that is, on the roadway side so that the plate-like portion 51, that is, the upper intermediate bracket 22 does not protrude from the lower side of the upper beam 40a to the roadway side. It is provided so as to be located behind the front end 41 of the beam 40a, that is, on the intermediate strut 20 side.

  In installing the protective fence 100 having the above-described configuration, first, after the main support column 10 is installed, the lower beam 30a and 30b and the upper beam 40a and 40b are the lower inner sleeve 60, the upper inner sleeve 70, the lower main bracket 11 and the upper main beam. It is fixed to the main column 10 via the bracket 12. Thereafter, after the intermediate strut 20 is installed between the main struts 10, the lower beam 30a is supported on the intermediate strut 20 via the lower intermediate bracket 21, and the upper beam 40a is supported on the intermediate strut 20 via the upper intermediate bracket 22. Supported. The lower intermediate bracket 21 and the upper intermediate bracket 22 may be attached to the intermediate strut 20 after the intermediate strut 20 is installed, or may be attached to the intermediate strut 20 before the intermediate strut 20 is installed. Good.

  As described above, the protective fence 100 according to the present embodiment is installed on the two main struts 10 that are erected side by side, the intermediate strut 20 that is erected between the two main struts 10, and the two main struts 10. The fixed upper stage beam 40a and the lower stage beam 30a are provided. The protective fence 100 is further attached to the front surface of the intermediate column 20 on the roadway side, and is attached to the upper intermediate bracket 22 that supports the upper beam 40a without being fastened, and the front surface of the intermediate column 20 on the roadway side, and the lower beam 30a. And a lower intermediate bracket 21 that supports

  With such a configuration, a part of the load from above the upper beam 40a is borne by the intermediate column 20 and the upper intermediate bracket 22, and a part of the load from above the lower beam 30a is borne by the intermediate column 20 and the lower intermediate bracket 21. Can be made. As a result, it is possible to suppress the deformation and breakage of the upper main bracket 12 and the lower main bracket 11.

  At this time, even when the intermediate strut 20 is provided following the existing main strut 10, it is only necessary to support the upper beam 40 a on the upper middle bracket 22, and it is necessary to remove the upper beam 40 a from the main strut 10. There is no need to fix the bracket 22 with bolts. Similarly, it is only necessary to support the lower beam 30a on the lower intermediate bracket 21, and it is not necessary to remove the lower beam 30a from the main column 10 or to fix the lower beam 30a to the lower intermediate bracket 21 with a bolt. Therefore, the intermediate strut 20, the upper intermediate bracket 22, and the lower intermediate bracket 21 can be easily installed.

  Further, in the guard fence 100 of the present embodiment, the front end 25 on the roadway side of the upper intermediate bracket 22 is positioned below the upper beam 40a, protrudes from the lower end 42 of the upper beam 40a toward the roadway side, and the upper beam It is located on the intermediate strut 20 side from the front end 41 on the roadway side of 40a. Similarly, the front end 24 on the roadway side of the lower intermediate bracket 21 is positioned below the lower beam 30a, protrudes from the lower end 32 of the lower beam 30a toward the roadway side, and more than the front end 31 on the roadway side of the lower beam 30a. Located on the intermediate strut 20 side.

  With such a configuration, since the front end 25 of the upper intermediate bracket 22 is located on the rear side of the front end 41 of the upper beam 40a, the protrusion of the upper intermediate bracket 22 to the roadway side can be suppressed. Similarly, since the front end 24 of the lower intermediate bracket 21 is located behind the front end 31 of the lower beam 30a, the lower intermediate bracket 21 can be prevented from projecting toward the roadway. As a result, it is possible to suppress the automobile from being damaged by the upper intermediate bracket 22 and the lower intermediate bracket 21. In addition, it is possible to suppress the occurrence of an accident when metal pieces or the like of an automobile adhere to the upper intermediate bracket 22 and the lower intermediate bracket 21 and the attached metal pieces touch the bicycle on the sidewalk or the driver.

  As mentioned above, although the protection fence of this invention was demonstrated based on embodiment, this invention is not limited to this embodiment. The present invention includes various modifications made by those skilled in the art without departing from the scope of the present invention.

  The present invention can be widely used in vehicle guard fences, particularly guard pipes and the like.

DESCRIPTION OF SYMBOLS 10 Main support | pillar 11 Lower-stage main bracket 11b, 21b Vertical wall part 11c, 12c Holding part 12 Upper-stage main bracket 12b, 22b Support | pillar cap 20 Middle support | pillar 21 Lower-stage intermediate bracket 21c, 51 Plate-shaped part 22 Upper-stage intermediate bracket 22c Support part 24, 25 , 31, 41 Front end 30a, 30b Lower beam 32, 42 Lower end 40a, 40b Upper beam 52 Vertical plate portion 53 Contact plate portion 60 Lower inner sleeve 70 Upper inner sleeve 100 Guard fence

Claims (2)

Two main struts standing side by side,
Intermediate struts erected between the two main struts;
A beam constructed and fixed on the two main struts;
An intermediate bracket attached to a front surface of the intermediate column on the roadway side and supporting the beam without fastening. The front end of the intermediate bracket on the roadway side is positioned below the beam, protrudes from the lower end of the beam to the roadway side, and is positioned closer to the intermediate column than the front end of the beam on the roadway side. Guard fence as described in.

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