JP5227138B2 - How to install road marking objects - Google Patents

Description

  The present invention relates to a method for installing a road marking body installed standing on a road for the purpose of center line marking, lane guidance marking, traffic regulation guidance marking, or the like on a road.

  Road marking objects are used by being installed on the center line on the road surface. The main installation method is to screw anchor bolts fixed or inserted in the road marking objects into anchor nuts that are embedded and fixed on the road surface. This method is often used because the road marking body can be firmly fixed.

  In relation to this, in Patent Document 1, a screw hole is provided inside the annular body, and the road is fixed to a base portion accommodation hole provided in a pavement portion of the road with a mortar or an epoxy resin adhesive. A method for removing the road sign pillar foundation in a road sign pillar comprising a sign pillar base and a road sign having a male screw screwed into a screw hole of the road sign foundation. A pull-out bolt having a male screw part that is screwed into a screw hole of the road sign pillar base part, the head part being lifted from the road surface. Attached to the road sign pillar foundation so as to protrude to the surface, a metal plate-like member is disposed on the surface of the surrounding road excluding the foundation housing hole, and a jack base is installed on the upper surface of the plate-like member In addition, the lifting part of the jack is The engaged to the head, removing method of the base portion for a road sign posts, characterized in that raising the lifting part is disclosed.

JP 2006-97430 A

  As shown in Patent Document 1, since the anchor nuts that have been used in the past are manufactured from a metal such as an aluminum alloy, when performing road construction after installation, the construction machine or the like is not damaged in advance. There was a problem that it had to be removed.

  Therefore, the present invention proposes a method for installing a road marking body that does not require the above-described removal work of the buried member during road construction or the like.

In order to achieve the above object, the present invention is configured as follows.
That is, the road sign object installation method according to the present invention is a road sign object installation method comprising a main body part formed in a columnar shape and a base part that supports and fixes the lower end of the main body part,
At the center of the lower end surface of the base portion, a cylindrical convex portion is provided protruding downward,
An anchor bolt is provided at the center of the convex portion so that the male screw portion projects downward,
On the road surface, an anchor nut made of fiber reinforced resin in which a female thread part that can be screwed with a male thread part of the anchor bolt is embedded and fixed with the female thread part facing upward,
A cylindrical concave portion corresponding to the shape of the convex portion is provided at the upper end of the female screw portion,
In the state where the convex portion is stored in the concave portion and the anchor bolt is screwed to the female screw portion to fix the base portion to the road surface, and the base portion is fixed to the road surface, the upper end portion of the anchor nut is It is characterized in that it is brought into contact with the lower end portion of the base portion so that the lower surface of the convex portion does not contact the bottom surface of the concave portion .
Moreover, it is an installation method of a road marking body provided with a main body portion formed in a column shape and a base portion that supports and fixes the lower end of the main body portion,
At the center of the lower end surface of the base portion, a cylindrical convex portion is provided protruding downward,
An anchor bolt is provided at the center of the convex portion so that the male screw portion projects downward,
On the road surface, an anchor nut made of fiber reinforced resin in which a female thread part that can be screwed with a male thread part of the anchor bolt is embedded and fixed with the female thread part facing upward,
A cylindrical concave portion corresponding to the shape of the convex portion is provided at the upper end of the female screw portion,
The convex portion is housed in the concave portion, the anchor bolt is screwed to the female screw portion, the base portion is fixed to the road surface, and the base portion is fixed to the road surface. It is characterized by not contacting the bottom surface of the recess.

According to the method for installing the road marking body according to the present invention, the anchor nut is formed of fiber reinforced resin, so that the construction machine is not damaged even if construction is performed from above the anchor nut that is buried and fixed.
Also, the convex part provided on the lower end surface of the base part is housed in the concave part of the anchor nut, and the anchor bolt is screwed to the anchor nut and fixed. Is applied, the side wall of the convex part is brought into contact with the inner peripheral wall of the concave part, and stress that tends to concentrate on the female thread part of the anchor nut is dispersed, so that the female thread part is not easily broken. Also, since the upper end of the anchor nut is in contact with the lower end surface of the base part, the downward impact or load applied when a vehicle or the like collides with the base part is not applied only to the female thread part of the anchor nut. Since it is distributed to the upper end portion of the anchor nut in contact with the lower end surface of the base portion, the female thread portion of the anchor nut is less likely to be destroyed.

Further, the anchor nut may be selected or combined with any one of polyamide resin and / or polybutylene terephthalate resin and / or polyethylene terephthalate resin and / or polyacetal resin and / or polyphenylene sulfide resin containing glass fiber. It is possible to form the main resin as a main component, and to provide high strength and impact resistance. Therefore, even if a vehicle or the like collides with the installed road marking body, the internal thread portion of the anchor nut is not easily broken.

  According to the method for installing a road marking body according to the present invention, road construction and the like can be performed without removing the anchor nut embedded and fixed in advance.

Embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of a method for installing a road marking object according to the present invention, FIG. 2 is a cross-sectional view of the main part of FIG. 1, and FIG. 3 is a base part and an anchor of FIG. It is sectional drawing which shows the condition from which the nut removed.

  In the drawings, reference numeral 1 denotes a main body of a road marking body. The main body portion 1 is formed of a cylindrical hollow columnar body, and a reflection sheet 11 having retroreflectivity that reflects outgoing light in parallel to incident light is attached to the upper outer surface thereof. The material of the main body 1 is preferably a thermoplastic polyurethane, a soft polyolefin, an elastomer, or the like in consideration of ease of molding, resilience to treading of a vehicle, durability, and the like.

  2 is a reflecting member. The reflecting member 2 is provided with a reflector 21 made of glass beads with an appropriate interval on a strip-shaped base material 22. The reflector 21 is preferably made of glass beads having high retroreflectivity that reflects light parallel to the incident light, and is not easily contaminated or deteriorated. However, a reflective tape or the like is used on the surface of the base material 22. You may stick. The material of the base material 22 may be a metal such as steel, stainless steel, or aluminum. However, in order to make it easy to embed and form the reflector 21, a highly elastic synthetic material such as rubber, urethane resin, or elastomer is used. It is preferable to use a resin, and it is more preferable to use a thermoplastic synthetic resin having a certain degree of hardness, such as polyethylene or polypropylene, so that the reflector 21 is difficult to come off.

3 is a base part. The base portion 3 has a cylindrical shape, and an annular groove 31 into which the main body portion 1 is inserted is formed on the upper surface thereof. The lower end of the main body 1 is inserted into the annular groove 31 and fused and fixed.
On the side wall of the base portion 3, a side wall groove portion 35 for attaching the band-like reflecting member 2 is formed over the entire circumference. The material of the base 3 is preferably a thermoplastic polyurethane, a soft polyolefin, an elastomer, or the like in view of ease of molding, resilience to treading of a vehicle, durability, and the like. Moreover, vinyl chloride, ASA resin, ABS resin, etc. which are excellent in impact resistance can also be used suitably.
The belt-like reflecting member 2 is wound around and attached to the side wall groove portion 35 of the base portion 3. The reflecting member 2 is not easily detached by being wound around the side wall groove portion 35, and the reflector 21 can be provided without projecting so much from the outer surface of the base portion 3, and also prevents displacement in the vertical direction. This is preferable. Further, the reflection member 2 may be attached to the outer periphery of the base portion 3 without providing the side wall groove portion 35. In addition, the reflecting member 2 may be attached with a reflecting tape as it is, or may be attached so that a glass reflector is embedded in the outer periphery of the base portion 3 as it is.
Moreover, in this embodiment, although the base part 3 is formed in the column shape, you may form not only in this but in other shapes, such as a truncated cone shape.

  At the center of the lower end surface 32 of the base portion 3, a cylindrical convex portion 33 is provided so as to protrude downward. In addition, an anchor bolt 5 is fixed at the center with the male screw portion 51 facing downward.

The anchor nut 4 is formed in a bottomed cylindrical shape with one end opened, and a cutout portion 44 is formed on the outer peripheral portion thereof so that the anchor nut 4 is not easily detached when it is embedded and fixed on the road surface. Has been.
The anchor nut 4 is inserted into a buried hole drilled in the road surface 6 where the base 3 is installed, and a fixing material 7 such as mortar or cement is filled in a gap between the anchor nut 4 and the surrounding buried hole. Is done.

On the inner peripheral portion of the anchor nut 4, a female screw portion 42 that can be screwed with the male screw portion 51 of the anchor bolt 5 is formed. A cylindrical recess 41 corresponding to the projection 33 is formed in the inner peripheral portion near the opening end of the anchor nut 4 so as to accommodate the projection 33.
The anchor nut 4 is formed by injection molding using a fiber reinforced resin as a material. The types of fiber reinforced resins include polyamide resins, polybutylene terephthalate resins, polyethylene terephthalate resins, polyacetal resins, and polyphenylene sulfide resins that contain glass fibers because of their ease of moldability and good impact resistance. Resins or the like in which any one is selected or combined can be suitably used. By forming the anchor nut 4 using these fiber reinforced resins, the anchor nut 4 itself is crushed even if the road surface is cut, polished, drilled, or the like with the anchor nut 4 embedded in the road surface. There is no risk of damaging or damaging the construction machine. For the same purpose, it is also possible to form the anchor nut 4 using ceramics or other ceramics other than the fiber reinforced resin.

The anchor nut 4 is embedded and fixed on the road surface with the concave portion 41 facing upward.
When the male screw 51 is screwed into the female screw portion 42 of the anchor nut 4 and fastened, the convex portion 33 is accommodated in the concave portion 41 and the base portion 3 is fixed to the road surface.
Since the base portion 3 is fixed in such a state, the side wall of the convex portion 33 comes into contact with the inner peripheral wall of the concave portion 41 when a vehicle or the like collides and a lateral force is applied to the base portion 3. The stress that tends to concentrate on the root of the threaded portion between the female screw portion 42 and the male screw portion 51 is dispersed, and the female screw portion 42 of the anchor nut 4 is not easily broken.

  When the male screw 51 is screwed into the female screw portion 42, the anchor nut 4 abuts the upper end portion 43 against the lower end surface 32 of the base portion 3 and fixes the base portion 3. Therefore, when a downward force is applied to the base portion 3 due to a vehicle collision or the like, all the force is not applied to the female screw portion 42 of the anchor nut 4 and the anchor nut that is in contact with the lower end surface 32 of the base portion 3. 4, the internal thread portion 42 of the anchor nut 4 is hardly broken.

FIG. 1 is a diagram showing an embodiment of a method for installing a road marking object according to the present invention. It is sectional drawing of the principal part of FIG. It is sectional drawing which shows the condition where the base part and anchor nut of FIG. 2 removed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main-body part 11 Reflective sheet 2 Reflective member 21 Reflector 22 Base material 3 Base part 31 Annular groove 32 Lower end surface 33 Convex part 35 Side wall groove part 4 Anchor nut 41 Recess 42 Female thread part 43 Upper end part 44 Notch part 5 Anchor bolt 51 Male screw Part 6 Road surface 7 Fixing material

Claims (2)

A method of installing a road marking body comprising a main body portion formed in a column shape and a base portion that supports and fixes the lower end of the main body portion,
At the center of the lower end surface of the base portion, a cylindrical convex portion is provided protruding downward,
An anchor bolt is provided at the center of the convex portion so that the male screw portion projects downward,
On the road surface, an anchor nut made of fiber reinforced resin in which a female thread part that can be screwed with a male thread part of the anchor bolt is embedded and fixed with the female thread part facing upward,
A cylindrical concave portion corresponding to the shape of the convex portion is provided at the upper end of the female screw portion,
In the state where the convex portion is stored in the concave portion and the anchor bolt is screwed to the female screw portion to fix the base portion to the road surface, and the base portion is fixed to the road surface, the upper end portion of the anchor nut is An installation method of a road marking body , wherein the lower end portion of the base portion is brought into contact with the lower surface of the convex portion so as not to contact the bottom surface of the concave portion . A method of installing a road marking body comprising a main body portion formed in a column shape and a base portion that supports and fixes the lower end of the main body portion,
At the center of the lower end surface of the base portion, a cylindrical convex portion is provided protruding downward,
An anchor bolt is provided at the center of the convex portion so that the male screw portion projects downward,
On the road surface, an anchor nut made of fiber reinforced resin in which a female thread part that can be screwed with a male thread part of the anchor bolt is embedded and fixed with the female thread part facing upward,
A cylindrical concave portion corresponding to the shape of the convex portion is provided at the upper end of the female screw portion,
The convex portion is housed in the concave portion, the anchor bolt is screwed to the female screw portion , the base portion is fixed to the road surface, and the base portion is fixed to the road surface. An installation method for a road marking body, wherein the road marking body is not brought into contact with the bottom surface of the recess .

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