JPH02285105A - Fixing guardrail main body to support - Google Patents

Abstract

PURPOSE:To improve safety and to enhance strength against collision by a car with extended distance between a guardrail main body and a support by installing the guardrail main body to the support with a distancing piece in the same diameter as the support interposed in between. CONSTITUTION:A distancing piece 7 constructed of a short steel pipe in a diameter same as that of a support 3 is interposed between a guardrail main body 1 and the support 3. Two hat-shaped brackets, each having three holes, are provided to the rear face side of the guardrail main body 1 and each of the brackets is fastened thereto with long bolts 6 and a fixing bolt 5 so that the guardrail main body 1 is placed at a distance from the support 3. Thereby direct hitting of wheels to the root of the support 3 can be prevented even in a collision by a car into the guardrail main body 1 and safety can be greatly enhanced.

Description

[Detailed Description of the Invention] FObject of the Invention] (Industrial Application Field) This invention provides a method for attaching a guardrail body I, which is a road safety facility, to a support 3 without using too many types of parts. This relates to installing the columns with as much spacing as possible.

(Prior Art) Conventionally, the guardrail body is simply attached to the pillar via one bracket, so the distance between the guardrail body and the pillar is only about 114 mm to 140 mm, and if a car collides, the car The wheels of the vehicle collided directly with the base of the pillar, often resulting in a large impact.

(Problem to be Solved by the Invention) Conventionally, attempts have been made to attach the guardrail body to the pillar via a distance piece in order to increase the distance between the guardrail body and the pillar, but due to the large number of parts types, this This complicated the construction of civil engineering materials and made it impossible to obtain appropriate strength.

The purpose of this invention is to increase the distance between the guardrail main body and the support column without increasing the number of types of parts, thereby increasing safety and strength.

[Structure of the Invention] (Means for Solving Problems) The following is a description of the embodiments carried out based on the drawings.

Figure 1 shows a distance piece 7 made of a short steel pipe with the same diameter as the support column, a bracket 2 interposed between the guardrail main body 1 and the distance piece, and the same bracket as the above mentioned bracket used as the support post on the opposite side of the guardrail main body. Install the bolts into the guardrail body by passing the longitudinal bolts 6 through the holes at both ends of each bracket so as to sandwich the support and distance piece, and by passing the installation bolts through the holes in the center of each bracket through the support and distance piece. 5, and is characterized in that it is installed by widening the gap between the guardrail body and the pillar.

FIG. 2 is a perspective view from the rear of a portion where the guardrail body is attached to the support column 3 via 2.1 brackets, which is performed in the conventional method of attaching the guardrail body 1.

(Function) The present invention does not require any special type of parts other than changing the conventional bolts and mounting bolts to longer lengths and using one distance piece with the same diameter as the support. You can install it by widening the gap between the guardrail body and the pillar without changing much.

(Effects of the Invention) As explained above, the guardrail body and the pillar can be installed with a wider gap in the work process that is almost the same as the conventional method of attaching the guardrail body and the pillar, so that when a car collides with the guardrail body, However, since the wheels are prevented from directly colliding with the base of the support and are not subject to large impacts, safety is significantly improved.

In addition, regarding the strength of the guardrail, instead of attaching the guardrail body and support with one bolt as in the past, the structure is attached with three bolts, so a car collision can occur from either direction. However, since at least one bolt acts as a tensile member, it has the effect of increasing strength.

[Brief explanation of drawings]

FIG. 1 is a perspective view from the rear showing the attachment of the guardrail main body and the support according to the present invention. l Nigar trail body, 2 nib bracket, 3: strut, 4
: Jointing bolt, 5: Mounting bolt, 6: Longitudinal bolt, 7: Distance piece FIG. 2 is a perspective view from the rear showing the attachment of a conventional guardrail main body and support. 1 Niga 1 Trail body, 2 Nib bracket, 3: Support, 4
: Splicing bolt, 5: Mounting bolt, 6: Bolt Figure 1 Patent applicant Higashi Kogyo Co., Ltd.

Claims (1)

[Claims] 1 Use two hat-shaped brackets 2 with three holes used to attach the guardrail body 1 to the pillar 3, and attach a distance piece made of a short steel pipe with the same diameter as the pillar and a hole for a mounting bolt to the guardrail body. This installation method is characterized by installing the guardrail body and the pillar with a wider gap than before by inserting the guardrail between the guardrail body and the pillar.