JP4583264B2 - Guardrail - Google Patents

Description

  The present invention relates to a guardrail provided at a road shoulder or a boundary with a sidewalk.

Guardrails are provided on the road shoulders, the borders with the sidewalks, and the median strip. Usually, the guardrail horizontally guards the strip-shaped steel beam 2 on a plurality of columns 1 standing on the road at predetermined intervals. When a traveling vehicle tries to run off the road due to something, this guard rail protects the passenger by regulating the vehicle while absorbing the impact. It also plays a role in protecting pedestrians and buildings along the road.
However, this steel plate beam 2 has high rigidity, and in the event of an accident, the impact on the vehicle is still large, and it cannot be said that the safety of passengers is sufficient. Therefore, a technique for improving such a problem has been proposed (for example, Patent Document 1).

JP-A-9-1000051 (pages 1 to 6)

However, the technique disclosed in Patent Document 1 is “a guard rail including a metal rail body, a protective cover for protecting the rail body, and a column supporting the rail body, and the protective cover is made of rubber or synthetic rubber. It is a “guard rail” characterized in that it is provided with a substrate and is attached to the surface of the rail body, and the synthetic rubber substrate is poorly integrated with the rail body. In addition, a bolt head as a fastening member for attaching the board to the rail body surface protrudes from the road side surface. For this reason, there is a possibility that a motorcycle or bicycle driver may come into contact with the bolt head and get injured.
Furthermore, there is a problem that such bolt fixing cannot prevent adhesion of the metal body piece. Recently, it was discovered in various parts of the country that a sharp metal piece of nazo was stuck in the bolt head and joint of the guardrail, and a junior high school student riding a bicycle touched the sharp triangular metal piece stuck in the joint of the guardrail and was injured. Accident reports have also been issued. In the problem that sharp metal pieces were attached to this guardrail, `` The investigation committee of the Ministry of Land, Infrastructure, Transport and Tourism said that the sharp metal pieces of Nazo are `` attached by catching the body of the guardrail bolt and the joint '' Determined (Chunichi Newspaper dated June 22, 2005). Therefore, if there are protrusions such as bolt heads (reference numerals 29 and 42 in FIGS. 17 and 18) and the joint portion of the main beam portion 2a (reference numeral TN in FIG. 17) on the road surface of the guardrail, an accident is induced. There was a fear.

  The present invention solves the above-mentioned problems, and is a guard rail using a steel plate beam, which not only enhances the adhesion of the elastic cover member to the beam to weaken the impact at the time of vehicle collision, It is an object of the present invention to provide a guard rail that improves safety by preventing the driver from touching and being injured, or being caught by a sharp metal piece when the vehicle is touched by a vehicle.

In order to achieve the above object, the gist of the invention described in claim 1 is that a plurality of support columns (1) erected at a predetermined interval and end portions of strip-shaped metal beam pieces are provided at the end portions. The struts are overlapped so that the holes coincide with each other, and a fastening shaft member is inserted into and fixed to the through-hole, and the beam (2) having a predetermined length is inserted into the through-hole provided in the beam. A fastening rail (42) fixed to the bracket (41) fixed to the support column so that the beam is horizontally disposed on the support rail, and a road side surface on which the vehicle of the beam travels. A belt-like cover member (3) made of an elastic material to be attached is provided, and covers the entire area of the beam, the shaft member, and the shaft part on the road side with the cover member, and the cover The road surface of the member is flat or has a smooth continuous surface. Adult City, Furthermore, the main beam part metal main beam piece serving said beam piece cross-section waveform is a predetermined length is 1 or more connected to (2a), connected to both ends of the main beam portion extending The cover member (3) of the cover member (3), which is formed with the beam piece (2), which is a metal sleeve beam (2b) bent in a J-shape in plan view, and covers the main beam portion part (3a) is provided with a recess in a portion of the shaft member and the shaft part protruding from the surface of the road side of the beam, as raised in the cover main part at the shaft member and the shaft part in the region can be suppressed In addition, the cover main portion (3a) has a substantially equal cross-sectional shape in the longitudinal direction to form a design surface portion covering the road side surface of the main beam portion (2a), and further on the main beam portion. beyond and lower edges and extending entrainment portion having a predetermined width in contact with the back surface side of the main beam portion, said The penetration portion forms a thick part on the back side of the upper edge and the lower edge part of the main beam part, and forms an upper hollow hole and a lower hollow hole which are electrically connected to the thick part in the longitudinal direction, and A shaft-shaped connecting member is passed and fastened between the upper hollow hole and the lower hollow hole at a predetermined position in the longitudinal direction of the main beam portion, so that the main beam portion is attached and integrated with the main cover portion. It is in a guardrail characterized by

  The guard rail according to the present invention is a guard rail using a metal beam, and improves the adhesion of the elastic cover member to the beam to weaken the impact at the time of a vehicle collision. It prevents the driver from coming into contact and getting damaged, and prevents the vehicle body from being caught by a sharp metal piece when it touches the traveling vehicle, and is effective in improving safety.

Hereinafter, the guardrail according to the present invention will be described in detail.
(1) Embodiment 1
FIGS. 1 to 14 show an embodiment of the guardrail of the present invention. FIG. 1 is an exploded schematic plan view showing how (a) attaches a cover member to an existing guardrail. (B) shows the cover member covered. FIG. 2 is an exploded schematic front view showing a state in which (a) attaches the cover member to the existing guard rail, and (b) shows the guardrail to which the cover member 3 is attached. It is a schematic front view. FIG. 3 is an explanatory cross-sectional view showing the process of attaching the main cover unit to the main beam part, and FIGS. 4 and 5 are explanatory cross-sectional views showing the process of attaching the main cover unit to the main beam part different from FIG. 6 and 7 are enlarged cross-sectional views around the entangled portion of the embodiment different from FIG. 3, FIG. 8 is an enlarged vertical cross-sectional view of the connecting portion connecting the cover main units, and (b) is (b). 9 is an enlarged vertical plan view of the connecting portion S for connecting the cover main units to each other, and FIG. 10 is a diagram in which (a) is a case where the cover main unit in FIG. Aspect figure (B) is another aspect figure in which an adsorption processing section is applied to the main cover unit of FIG. 5 (C). 11 is a partially enlarged perspective view of the suction processing portion used in FIGS. 10 (a) and 10 (b), and FIG. 12 is a cross-sectional view of the main cover unit corresponding to FIGS. 3 (c) and 5 (c). FIG. 5 is another aspect diagram in which a recess is provided on the beam-side back surface of the main body portion. FIG. 13 shows another embodiment of FIG. 3 (c) in which the cover main part is attached and strengthened to the beam with a connecting member using a hollow hole provided in the thick part of the entrainment part of the cover main unit, and FIG. 14 shows the cover. It is another aspect figure of FIG. 3 (c) which strengthens connection between cover main units with a connection shaft material using the hollow through-hole provided in the thick part of the winding part of the main unit.

The guardrail includes a support column 1, a beam 2 , a bracket 41, a shaft part 42, and a cover member 3. In the present embodiment, a cover member 3 is attached to the beam 2 of the existing guard rail formed by the support column 1, the metal beam 2, the bracket 41, and the shaft part 42 to form a guard rail as the product of the present invention.

  The support column 1 is a metal rod-like body having a predetermined length that is embedded in a road at predetermined intervals along a boundary line with a shoulder or a sidewalk or along a central separation zone of the road and standing at a required height. Here, the support column 1 is a hollow rod-like body in which the top of the pipe body 10 that is a predetermined height from the ground GL is covered with a cap 11.

The beam 2 overlaps the end portions of the strip-shaped metal beam pieces 2f so that the through holes 22 provided in the end portions 21 coincide with each other (see FIG. 17 ), and the fastening shaft member 29 is placed in the through hole 22 . Is a protective belt-like body having a predetermined length of several meters to several tens of meters by inserting and fixing. A metal main beam portion 2a and metal sleeve beams 2b are provided on both sides of the main beam portion 2a to form a beam 2 of a protective band.
One or a plurality of the beam pieces 2f, which are metal main beam pieces 2f _{s having} a cross-sectional waveform as shown in FIG. 3 (c), are connected to form a main beam portion 2a having a predetermined length. Then, a metal sleeve beam 2b as shown in FIGS. 1 and 2 bent in a J-shape in plan view is connected to and extended from both ends of the main beam portion 2a to form the beam 2.

Here, by connecting the two steel main beam pieces 2f _s as in FIG. 1 and the main beam portion 2a of predetermined length. In that connection portions overlay the main beam pieces 2f _s end 21, to match the hole 22 provided six each end portion 21 (Figure 17). The main beam piece 2f _s has a concave portion 28 recessed toward the sidewalk in the center in a side view, and has a convex portion 27, 27 swelled above and below the road side, and has a cross-sectional corrugation in the longitudinal direction. Two through holes 22 are provided in each of the upper and lower convex portions 27, 27 and the concave portion 28, and a shaft member 29 made of bolts and nuts is inserted into the through holes to be fixed to the main beam portion 2a by screwing.
As shown in FIGS. 1 and 2, beam pieces 2f, which are known metal sleeve beams 2b, are attached to both ends of the main beam portion 2a. Superimposing the ends of the main beam portion 2a and the metal sleeve beam 2b and the connecting portion of the end portion 21 of the main beam pieces 2f _s metallic sleeve beam 2b, matching the holes 22 provided four each in the end Let Then, a shaft member 29 made of bolts and nuts is inserted into two through holes 22 on the upper and lower convex portions 27, 27 of the main beam portion 2a and on the flat surface of the metal sleeve beam 2b. And Since the main portion of the metal sleeve beam 2b on the road surface side is a flat surface, a space O (see FIG. 3C) is formed between the metal sleeve beam 2b and the concave portion 28 of the beam piece 2f. blocking the the space from the main unit-side edge tongues 2b ₁ is inclined to the main beam portion.

As shown in FIG. 18, a bracket 41 is fixed to the support column 1 with bolts bt and nuts nt, and the beam 2 is horizontally arranged on the support column 1. It is fixed by the fastening shaft part 42 so as to be provided.
The bolt of the shaft part 42 is inserted into the through hole 24 provided in the concave portion 28 of the beam piece 2 f and the mounting hole provided in the bracket 41, and the beam 2 is screwed and fixed to the bracket 41. Hole 24, the shaft part 42 is the main beam pieces 2f _s connection portion between, through hole 22 which forms the connection between the main beam pieces 2f _s, shaft member 29 also that serve as.

The cover member 3 is a belt-like adherend made of an elastic material that adheres to the road-side surface on which the vehicle of the beam 2 travels. The surface of the cover member 3 on the road side related to the beam 2, the shaft member 29 and the shaft component 42 (here, the protrusion on which the shaft member 29 and the shaft component 42 protrude from the road side beam surface is also “road side”. The surface of the cover member 3 on the road side is flat or smooth and uniformly formed (b in FIG. 2). The elastic material includes foams such as rubber, sponge and plastic foam. A rubber or the like in which a reinforcing core material is embedded is also included in the elastic material in the present invention. When a rubber material is used for the cover member 3, chloroprene or hypalon that is excellent in weather resistance, ozone resistance, heat resistance, chemical resistance, and the like is more preferable.
The present embodiment is a rubber cover member 3. The cover member 3 includes a cover main portion 3a attached to the main beam portion 2a and a cover auxiliary portion 3b attached to the metal sleeve beam 2b. As shown in FIG. 2, they are butt-connected and integrated with an adhesive. Cover main portion 3a of the present embodiment has a plurality formed by integrating (here three) butt cover main unit 3a ₁ of the joint. For example, by using the cover main unit 3a ₁ having a fixed length of 2 m or 4 m, the weight can be reduced and the workability can be improved. The cover main unit 3a ₁ is an extrusion-molded product having an equal cross-sectional shape in the longitudinal direction. As shown in FIG. 3 (a), a flat plate portion that abuts the upper and lower convex portions 27 and 27 of the main beam portion 2a and A gap ε that matches the beam thickness is secured between the inclined surface portion toward the edge 25 and the lower edge 26, and the inclined surface portion beyond the upper edge and the lower edge, and is applied to the back surface side of the main beam portion 2a. Entanglement portions 31 and 32 having a predetermined width in contact with each other are formed. The cover main portion 3a is formed with a design surface portion 30e covering the road side surface of the main beam portion 2a with the thickness thereof being substantially constant over the entire region, and further exceeding the upper edge 25 and the lower edge 26 of the main beam portion 2a. This is a rubber molded product in which the entrained portions 31 and 32 having a predetermined width contacting the back surface side of the main beam portion 2a are extended. The main portion 3a of the cover is an extruded product made of rubber. As shown in FIGS. 6 and 7, a reinforcing core member 305 made of mesh steel wire is embedded to improve the strength. When the cover main portion 3a is attached to the beam 2, the upper edges of the main beam portion 2a are formed by elastically deforming the entraining portions 31, 32 as shown in FIG. 3 (b) and expanding the design surface portion 30e. After passing over 25 and the lower edge 26, the cover main portion 3a is attached to the beam 2 (main beam portion 2a) by abutting against the back side of the main beam portion 2a by elastic restoring force.
Cover auxiliary portion 3b bent in plan view J-shape (FIG. 1, FIG. 2), the cross-sectional shape is basically the same as that of the cover main unit 3a ₁ of FIG. Although detailed illustration is omitted, the flat plate portion that becomes the design surface that appears in FIG. 2, the inclined surface portion that extends from here to the upper edge and the lower edge of the metal sleeve beam 2b, and beyond the upper edge and the lower edge, A predetermined gap is ensured between the inclined surface portion and the entrained portion running at a predetermined width in the longitudinal direction that contacts the back surface side of the metal sleeve beam 2b.
The cover main unit 3a ₁ is sequentially attached to the beam 2, the cover auxiliary portion 3b is attached to the metal sleeve beam 2b, and the connecting portions S (joint portions) are joined and integrated with an adhesive or the like. 2 covers the entire area of the road-side surface, the shaft member 29, and the shaft part 42 on the road side. And the surface of the road side is made into the cover member 3 which forms the flat surface which is flat or gently continues. By covering the entire area of the beam 2, the shaft member 29, and the shaft part 42 on the road side with the cover member 3, the vehicle body is not caught on the heads or the joints TN of the bolts 29 and 42 of the guardrail. There will be no injuries when the motorbike or bicycle driver touches the bolt head. Since the cover member 3 forms a flat or smooth continuous surface on the road side, it is useful for improving the landscape.

In place of the present embodiment product of FIG. 3, the cover main unit 3a ₁ (cover main portion 3a) is somewhat troublesome at the construction site, but the semi-finished product of FIG. 4 may be processed at the site. As shown in FIG. 4 (a), 311 and 321 having a shape in which the entrained portions 31 and 32 are extended from the flat plate portion to the extended line of the inclined surface portion toward the upper edge and the lower edge of the upper and lower convex portion 27 are carried into the construction site. Therefore, as shown in FIG. 4 (b), the winding portions 31, 32 are formed by bending, and the winding portions 31, 32 pass over the upper edge 25 and the lower edge 26 of the main beam portion 2a and come into contact with the back surface of the main beam portion 2a. The cover main part 3a may be attached to the beam 2 (main beam part 2a).
Further, the cover main portion 3a forms inclined surface portions from the flat plate portion contacting the upper and lower convex portions 27 of the main beam portion 2a to the upper and lower edges of the upper and lower convex portions 27, and further beyond the upper and lower edges. the main other shape as shown in FIG. 3 or FIG. 4 to form a winding portion 31, 32 on the back side of the beam portion 2a, in close contact with the entire surface of the metallic main beam pieces 2f _s cross section waveform as in FIG. 5 Te It can also be a shape. In FIG. 5 (a), a semi-finished product is prepared in which a hollow 30u corresponding to the concave portion 28 of the main beam portion 2a is provided in the cover member 3 and flat plates 312 and 322 corresponding to the convex portion 27 are extended. Bending parts 311 and 321 and further entraining parts 31 and 32 are formed at the construction site. 5 (b) prepares semi-finished products formed up to the bent portions 311 and 321 of FIG. 5 (a), and forms the entangled portions 31 and 32 at the construction site. FIG. 5 (c) shows a recess 30u that contacts the concave portion 28 of the main beam portion 2a, a flat plate portion that contacts the vertical convex portion 27, and an inclined surface portion that extends from the flat plate portion to the upper and lower edges of the vertical convex portion 27. And a main part of the cover that forms the entrainment portions 31 and 32 having a predetermined width that abuts the back surface side of the main beam portion 2a while ensuring a predetermined gap ε between the upper edge and the lower edge and the inclined surface portion. Part 3a is shown. The cover main portion 3a forms a design surface portion 30e that covers the road side surface of the main beam portion 2a, and further abuts on the back surface side of the main beam portion 2a beyond the upper edge 25 and the lower edge 26 of the main beam portion 2a. A rubber molded product in which the entraining portions 31 and 32 having a predetermined width are extended. When the cover main portion 3a is attached to the beam 2, the entrained portions 31 and 32 are elastically deformed as shown by the broken lines in FIG. 5C, and are expanded with respect to the design surface portion 30e to thereby form the main beam portion 2a. After passing over the upper edge 25 and the lower edge 26, the cover main part 3 a is attached to the beam 2 by being brought into contact with the back side of the main beam part 2 a by elastic restoring force.

Here, in the cover member 3, the thickness of the main body portion 30 forming the design surface portion 30 e and the entrainment portions 31, 32 are the same, but as shown in FIG. 6, the thin fins 318, It is more preferable to extend 328. Since it is thin, it can be easily elastically deformed, and an adhesive is applied to the fin to enhance the adhesion of the cover member 3 to the beam 2, and rainwater can enter the gap between the cover member 3 and the beam 2. Because it can be stopped. As a method for preventing rainwater intrusion, a configuration in which the tips of the entraining portions 31 and 32 are sealed with caulking C as shown in FIG.
Further, in this embodiment, the cover main unit 3a ₁ is formed by butt joining as shown in FIGS. 1 and 2, but the cover main part 3a is formed as shown in FIG. The cover main unit 3a ₁ is connected to each other by applying the adhesive BD to form the cover main portion 3a, or the connecting end of the cover main unit 3a ₁ is connected to the arimiso as shown in FIGS. If an ant that fits in is formed, the integration of the cover main units 3a ₁ becomes stronger and more preferable.
Furthermore, if the cover member 3 is provided with the suction processing portion 306 and the suction cup 307 as shown in FIGS. 10 and 11 on the contact surface with the beam 2, it is more preferable that the cover member 3 can be brought into close contact with the beam 2. FIG. 11 (a) shows a suction processing unit 306 that increases the suction function by making it finer like a grid, and FIG. 11 (b) shows a large number of circular suction cups 307.

Further, the cover main portion 3a to which the main beam portion 2a is attached is provided with a recess 30v as shown in FIG. 12 in the portion of the shaft member 29 and the shaft component 42 protruding from the road-side surface of the beam 2, and the shaft member It is more preferable that the bulge of the cover main part 3a in the area of the 29 and the shaft part 42 is suppressed. The present invention covers the entire area of the surface on the road side of the beam 2, the shaft member 29 and the shaft component 42 with the cover member 3, and the surface of the cover member 3 on the road side is flat or smoothly continuous. However, the bolt head protrudes toward the road where the shaft member 29 and the shaft component 42 are present, and the cover member 3 is elastically deformed so that it rises somewhat into a mountain shape and continues smoothly. Stay on forming the face. When the cover 2 covers the beam 2, the cover member 3 is elastic by adopting the cover main unit 3 a ₁ having the recess 30 v on the surface on the beam 2 side where the shaft member 29 and the shaft component 42 are located. Deforms and no longer rises. The cover main part 3 a (cover member 3) is closely integrated with the beam 2. Further, the life of the cover member 3 is extended and the design surface becomes flat and the appearance is good.

Further, as shown in FIG. 13, the cover main portion 3a has thick portions 31n and 32n formed on the back side of the upper edge 25 and the lower edge 26 of the main beam portion 2a. The upper hollow hole 31n ₁ and the lower hollow hole 32n ₁ that are electrically connected to _{each other} are formed, and a shaft-shaped connecting member is formed between the upper hollow hole and the lower hollow hole at a predetermined position in the longitudinal direction of the main beam portion 2a. It is more preferable that the main beam portion 2a is set so that the cover main portion 3a is attached and integrated by fastening through 47. This is because, unlike an adhesive or the like, the cover main portion 3a can be securely attached and integrated to the main beam portion 2a by the connecting member 47 in a simple manner. Note that the portion providing the connecting member 47 will be provided in post-processing such as a mounting hole penetrating from the outer surface of the cover main portion 3a in the hollow hole 31n _1, 32n _1. Reference numerals 31n ₀ and 32n ₀ denote enlarged diameter portions that allow the connection member 47 to be disposed.

Cover main portion 3a is formed by connecting a plurality of covering major unit 3a _1, FIG. 14 (b), the back surface side of the upper and lower edges sites as entrainment portions 31 and 32 the main beam portion 2a of the (c) The upper hollow through holes 31n ₅ and the lower hollow through holes 32n _{5 that} are formed in the thick portions 31n and 32n and are electrically connected to the thick portions in the longitudinal direction are provided, and the cover main units 3a ₁ are connected to each other. at the site S,拡形portion leaving intact shape by predetermined distance toward the main body side of the upper hollow hole 31n ₅ and the lower hollow hole 32n ₅ the contact surface S ₁ from the covers main unit 3a ₁ 31n ₆ and 32n ₆ are provided, and it is more preferable that both cover main units 3a _{1 of the} connection site S are provided integrally through the connecting shaft member 48 between the expanded portions. This is because the connection between the cover main units can be strengthened without relying on an adhesive or the like, and replacement of damaged items can be facilitated by maintenance or the like. The enlarged portions 31n ₆ and 32n ₆ serve as attachment holes that penetrate the hollow through-hole 22 from the outer surface of the cover main portion 3a. FIG. 14 (d) is an enlarged view in the circle of FIG. 14 (c), but the enlarged portions 31n ₆ and 32n ₆ can be kept in good appearance if they are plugged with a plug P as shown in the drawing, which is particularly problematic. Never become. The enlarged portions 31n ₆ and 32n ₆ are formed at regular intervals in the longitudinal direction by post-processing or the like, and are commercialized as the cover main unit 3a _1. Such main units are also substantially equal in the longitudinal direction in the present invention. It shall be included in the shape.

  The design surface of the cover member 3 (here, the road surface side) is based on white, and red or yellow diagonal lines or fluorescent colors are used in dangerous places. In addition, a horizontally long character can be applied to the design surface so that a safety slogan can be read during traveling. In places where landscapes are important, wood grain and forest patterns can be used.

(2) Reference form In this reference form, as shown in FIG. 15 (a), a plate is provided at both ends of the main beam portion 2a, at the tip end portion of the rubber sleeve beam portion 21c bent in a J shape in plan view via a hinge portion 22c. The sleeve beam portion 21c related to the rubber sleeve beam 2c provided with the cylindrical body 23c is sandwiched between the plate-like body 23c so that the sleeve beam portion 21c faces the road side. Thus, the beam 2 having a predetermined length is obtained by extending and fixing. The bolt fixing of the rubber sleeve beam 2c to the main beam 2 using the through hole 22 and the through hole 24 is set so that the bolt head of the implanted bolt is on the sidewalk side. Reference numeral 22C ₁ denotes a shaft member as a rotational fulcrum of the hinge portion. The fastening shaft part 42 is inserted into the through hole 24 provided in the beam 2, and the beam 2 is fixed to the column 1 directly or to the bracket 41 fixed to the column 1 so as to be horizontally disposed. The main beam portion 2a includes a strip-shaped cover main portion 3a made of an elastic material that adheres to the road side surface on which the vehicle travels. The entire surface of the road side is covered, and the cover main portion 3a forms a flat or smooth continuous surface with the sleeve beam portion 2c (FIG. 16). Here, the cover main unit 3a ₁ forming the cover main portion 3a is two.
The guard rail of the present embodiment is a rubber sleeve beam 2c in place of the metal sleeve beam 2b of the first embodiment, and the rest is the same as that of the first embodiment, and detailed description thereof is omitted. The same reference numerals as those in the first embodiment denote the same or corresponding parts.
The hinge portion 22c of the rubber sleeve beam 2c is integrally formed with the sleeve beam portion 21c and the plate-like body 23c, instead of the hinge portion 22c shown in FIG. When to be made at low cost is preferably from Re FIG et al.

(3) Effect Since the guard rail constructed in this way covers the entire area of the surface on the road side related to the beam 2, the shaft member 29, and the shaft component 42 with the cover member 3, the running vehicle is supposed to be something Even if it hits the guardrail trying to get out of the road, the guardrail will alleviate the impact. Since the cover member 3 made of an elastic material covers the beam 2, the impact at the time of a vehicle accident is reduced and the accident damage itself is reduced.
And since the cover member 3 covers the entire area of the beam 2, the shaft member 29 and the shaft part 42 on the road side, the driver of the bike or bicycle contacts the head of the bolt and gets damaged, or the traveling vehicle contacts Sometimes it can prevent the car body from being caught and torn off by sharp metal pieces.
As in the first embodiment, the cover member 3 covers the shaft member 29 at the joint portion TN and the projection of the shaft component 42 that fixes the beam 2 to the support column 1 with the existing guard rail, so that the surface is flat or gently continuous. Become a product. The cover main portion 3a of the cover member 3 that adheres the main beam portion 2a is provided with a recess 30v in a portion of the shaft member 29 and the shaft component 42 protruding from the road-side surface of the beam 2, and the shaft member 29 and If the bulge of the cover main part 3a in the region of the shaft part 42 is suppressed, the surface of the cover member 3 becomes flat and smooth and the appearance is improved. It can provide safety for bicycle and motorcycle riders who pass close to the guardrail. At the same time, the cover main portion 3a is more closely integrated with the beam 2 by forming the recess 30v.

The cover main portion 3a has a substantially equal cross-sectional shape in the longitudinal direction to form a design surface portion 30e that covers the road side surface of the main beam portion 2a, and further beyond the upper edge 25 and the lower edge 26 of the main beam portion 2a. When the entrainment portions 31 and 32 having a predetermined width that are in contact with the back surface side of the main beam portion 2a are extended, the entire area of the surface on the road side of the beam 2, the shaft member 29, and the shaft component 42 is covered by the cover member 3. It can be covered relatively easily. The cover main portion 3a forms a design surface portion 30e that covers the road side surface of the main beam portion 2a, and further passes over the upper edge 25 and the lower edge 26 of the main beam portion 2a on the back surface side of the main beam portion 2a. A rubber molded product is formed by extending the entraining portions 31 and 32 having a predetermined width to be in contact, and the entraining portions 31 and 32 are elastically deformed and expanded with respect to the design surface portion, whereby the upper edge 25 of the main beam portion 2a is expanded. When the entrainment portions 31 and 32 abut against the back side of the main beam portion 2a by the elastic restoring force so that the cover main portion 3a is attached to the beam 2, Since the cover member 3 is attached to the beam 2 by the elastic deformation of the main part 3a, the attachment work becomes easy. In particular, when the cover main portion 3a is divided into cover main units 3a1 having a unit length or the like, the mounting operation is further facilitated.
In addition, if thin fins 318 and 328 for bonding as shown in FIG. 6 are provided on the cover member 3 (cover main portion 3a) and the fin and the back surface of the beam are bonded and fixed, peeling of the cover member 3 from the beam 2 is suppressed. It is done. Degradation of steel guardrail and rust can be prevented. The same effect can be obtained by the coking process as shown in FIG.
Further, the cover main part 3a is provided with an adsorbing force that adheres to the beam 2 on the cover main part 3a itself when the suction processing part 306 and the suction cup 307 as shown in FIGS. As a result, the main cover portion 3 a comes into close contact with the existing beam 2 with the suction force, and the main cover portion 3 a is securely fixed to the beam 2.

Further, as shown in FIGS. 13 and 14, the entrainment portions 31 and 32 form the thick portions 31n and 32n on the back surface side of the upper edge and the lower edge portion of the main beam portion 2a and are electrically connected to the thick portions in the longitudinal direction. An upper hollow hole 31n ₁ and a lower hollow hole 32n ₁ are formed, and a shaft-like connecting member 47 is fastened between the upper hollow hole and the lower hollow hole at a predetermined position in the longitudinal direction of the main beam portion 2a. Then, when the main beam portion 2a is attached and integrated with the main cover portion 3a, the main beam portion 2a and the main cover portion 3a are in close contact with each other with a simple structure, and the main cover portion 3a is once set on the beam 2. If fixed, the structure cannot be easily removed.
Further formed by connecting the cover main portion 3a plurality of covering major unit 3a _1, entrainment portions 31 and 32 the main beam portion 2a of the upper and lower edges portions of the back side thick portion 31n, are formed on 32n In addition, an upper hollow through hole 31n ₅ and a lower hollow through hole 32n _{5 that} are electrically connected in the longitudinal direction to the thick part are provided, and the upper hollow through hole 31n ₅ and the lower Enlarged portions 31n ₆ and 32n ₆ are provided in the side hollow through holes 32n ₅ so as to leave a shape of a predetermined distance from the contact surface S ₁ toward the main body side of the two main cover units 3a _1. When both covers major units 3a ₁ of the connection portion S through the connection shaft member 48 between the parts is so integrally provided, while enjoying the convenience of workability improvement using the cover main unit 3a _1, cover major Cover connecting reinforcement between knit is achieved to form a main portion 3a (the cover member 3).

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, material, and the like of the support column 1, beam 2, cover member 3, etc. can be appropriately selected according to the application. A guide index sensor for guiding and guiding an automatic traveling device of a vehicle such as an automobile may be incorporated in the guard rail. This can further reduce the cost of installing the guardrail.

FIG. 2A is an exploded schematic plan view showing a state in which a cover member is attached to an existing guard rail in the guard rail of the first embodiment, and FIG. 2B is a schematic plan view of the guard rail to which the cover member is attached. (A) is a disassembled schematic front view which shows a mode that a cover member is adhere | attached on the existing guardrail, (b) is a schematic front view of this guard rail to which this cover member was attached. It is explanatory cross-sectional view which shows the attachment process of the cover main unit to a main beam part. It is explanatory cross-sectional view which shows the attachment process of the cover main unit to the main beam part of a different aspect from FIG. It is explanatory cross-sectional view which shows the attachment process of the cover main unit to the main beam part of a different aspect from FIG. It is an expanded sectional view of the surroundings of the winding part of a different aspect from FIG. It is an expanded sectional view of the surroundings of the winding part of a different aspect from FIG. (A) is an enlarged vertical cross-sectional view (b) of a connecting portion for connecting the cover main units to each other. It is an enlarged plan view of the connection site | part which connects cover main units. (A) is a different view of the main cover unit of FIG. 3 (c) with suction processing parts and suction cups, and (b) is a different view of the main cover unit of FIG. 5 (c) with suction processing parts. is there. FIG. 11 is a partially enlarged perspective view of the suction processing unit and the suction cup used in FIGS. FIG. 6 is a cross-sectional view of the main cover unit corresponding to FIGS. 3 (c) and 5 (c). FIG. 4 is another embodiment of FIG. 3C in which the cover main part is attached and strengthened to the beam with a connecting member by using a hollow hole provided in a thick part of the entrainment part of the cover main unit. It is another aspect figure of FIG. 3 (c) which strengthens connection between cover main units with a connection shaft material using the hollow through-hole provided in the thick part of the covering part of the cover main unit. It is a fragmentary perspective view around the rubber sleeve beam of a reference form . (A) is an exploded schematic plan view showing a state in which a cover member is attached to the guard rail, and (b) is a schematic plan view of the guard rail to which the cover member is attached. It is a fragmentary perspective view of the joint part of a main beam part. It is explanatory cross-sectional view which fixes a beam to a support | pillar via a bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Beam 2a Main beam part 2f Beam piece 21 End part 22 Through-hole 24 Through-hole 25 Upper edge 26 Lower edge 29 Shaft member 2b Metal sleeve beam 2f Beam piece 2c Rubber sleeve beam 21c Sleeve beam part 22c Hinge part 23c Plate-like body 3 Cover member 3a Cover main part 3a ₁ Cover main unit 30e Design surface part 30v Recess 31n, 32n Thick part 32n ₁ , 32n ₁ Hollow hole 31n ₅ , 32n ₅ Hollow through hole 31n ₆ , 32n ₆ Part 41 Bracket 42 Shaft part 47 Connecting member 48 Connecting shaft member S Connection part S ₁ Contact surface

Claims (1)

A plurality of support columns (1) erected at predetermined intervals and the end portions of the strip-shaped metal beam pieces are overlapped so that the through holes provided at the end portions coincide with each other, and a fastening shaft member is placed in the through holes. The beam (2), which has a predetermined length by being inserted and fixed , and the bracket (41) fixed to the column through the through hole provided in the beam, the beam is horizontally disposed on the column. And a belt-like cover member (3) made of an elastic material that adheres the road-side surface on which the vehicle travels. The cover member covers the entire area of the road-side surface of the beam, the shaft member, and the shaft component, and the road-side surface of the cover member is a flat or smooth continuous surface. formed, further, the bi serving metallic main beam pieces of cross-sectional waveform A main beam portion (2a) having a predetermined length by connecting one or a plurality of beam pieces, and a metal sleeve beam bent in a J-shape in plan view and connected to both end portions of the main beam portion ( 2b) The beam (2) is formed by the beam piece, and the cover main part (3a) of the cover member (3) for attaching the main beam part projects from the road side surface of the beam. A recess is provided in the shaft member and the shaft part so that the main cover in the region of the shaft member and the shaft part can be prevented from being raised . In addition, the cover main part (3a) A design surface portion that covers the road side surface of the main beam portion (2a) is formed to have an approximately equal cross-sectional shape, and further, the upper surface and the lower edge of the main beam portion are passed over the back surface side of the main beam portion. by extending entrainment portion having a predetermined width which is in contact, the back surface of the upper and lower edges portions of the trapping part the main beam portion And forming an upper hollow hole and a lower hollow hole conducting in the longitudinal direction in the thick part, and further, the upper hollow hole and the lower side at a predetermined position in the longitudinal direction of the main beam part. A guardrail characterized in that a shaft-shaped connecting member is passed between the hollow holes and fastened so that the main beam part is attached to and integrated with the main part of the cover.

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