JP3206033U - Saya tube cover for guardrail support - Google Patents

Abstract

Provided is a cover for a guardrail post for a guardrail strut, which is easy to attach and detach and can reliably and stably close a sheath pipe. A lid 10 of the present invention is joined to a pair of symmetrical metal semicylinders 11 and 12 and the upper ends of a pair of metallic half cylinders, respectively, and closes the upper end opening of the half cylinder. And a pair of metal upper plate bodies 13 and 14 provided with a flange portion horizontally projecting outward from the outer peripheral edge of the upper end of the semi-cylindrical body by a certain amount, and the center of the inner peripheral surface of one semi-cylindrical body 11 and 12 Between the first bolt 15 provided in the horizontal direction and the second bolt 16 provided in the horizontal direction from the center of the inner peripheral surface of the other semi-cylindrical body and the distance between the tips of the first and second bolts. Is adjusted to have a turnbuckle nut 17 for adjusting the distance between the pair of metal semi-cylindrical bodies 11 and 12. The lid can be attached to the sheath tube easily and reliably using a turnbuckle. [Selection] Figure 2

Description

  The present invention relates to a lid that covers a sheath pipe embedded in an expressway or the like in order to erect a guardrail column.

  Guardrails are installed on roadsides such as expressways and median strips. The guardrail is normally supported by guardrail struts erected at a predetermined interval. There are two methods for setting up the guardrail struts: a fixed installation method that stands directly on the road (see, for example, Patent Document 1), a Saya pipe is embedded in the road in advance, and the guardrail strut is fitted into the Saya pipe from above. There are two types of methods (see Patent Document 2, for example).

  The former is often used as an installation method on the road side of a general road, and the latter is often used when a lane switching work or the like is scheduled on an expressway or the like.

JP 2008-231756 A Japanese Patent No. 5114584

This device has a novel configuration for satisfactorily closing the entrance of the Saya pipe that opens on the road surface after the guardrail support column is extracted from the Saya pipe that is pre-embedded in the road for lane switching or the like. The object is to provide a lid.
More specifically, the position of the guardrail is changed in order to switch the lane in the lane switching work or the like on the road. When the guard rail post and the guard rail that have been installed to demarcate the old lane are removed, the entrance of the Saya tube from which the guard rail post has been removed remains exposed and open on the road surface. If the inlet of the Saya tube is not blocked, there is a possibility that it may pose a danger to the traveling wheel, especially a motorcycle.

Therefore, the entrance of the Saya tube after the guardrail support has been removed has been conventionally blocked by various methods.
As an example, there is a method using a simple lid made of resin, but the lid may come off or break when a large vehicle or the like passes over the resin lid. In the case of a light lid, when rainwater enters and accumulates in the sheath tube, the lid may be lifted and removed.

On the other hand, a method of covering the sheath pipe with a gap and surroundings with an adhesive or the like was tried, but the lid removal work was done later when the guard rail column was erected by reusing the sheath pipe. There was a problem that was very troublesome.
The present invention has been made based on such a background, and its main object is to provide a lid that can be easily attached and detached and can reliably and stably close a sheath tube.

  The device according to claim 1 of the present application is divided into a left and right part in the axial direction and a pair of metal half-cylinders having a symmetrical shape with respect to the dividing surface, and upper ends of the pair of metal half-cylinders. Each of which is connected to the upper end of the semi-cylindrical body, and has a flange portion that horizontally protrudes outward from the outer periphery of the upper end of the semi-cylindrical body by a certain amount, and is symmetrical with respect to the dividing surface. A pair of shaped metal upper plate bodies and one of the pair of metal semi-cylindrical bodies are provided so as to protrude horizontally from the center of the inner peripheral surface of the one half-cylindrical body, and a left male screw or a right male screw is formed at least at the tip portion A first bolt and a second male screw that protrudes in the horizontal direction from the center of the inner peripheral surface of the other half-cylindrical body of the pair of metal semi-cylindrical bodies, and has a right male screw or a left male screw formed at least at the tip portion. A bolt and the first bolt and the second bolt A turnbuckle nut for adjusting the interval between the pair of metal semi-cylindrical bodies by screwing at least the tip portion of the first bolt and adjusting the interval between the tips of the first bolt and the second bolt. This is a lid for a guardrail strut Saya tube.

  The device according to claim 2 of the present application is a first nut in which a left female screw or a right female screw is formed in place of the first bolt so as to protrude in the horizontal direction from the center of the inner peripheral surface of the one half cylinder. And a second nut formed with a right female screw or a left female screw is provided instead of the second bolt so as to protrude horizontally from the center of the inner peripheral surface of the other semi-cylindrical body, and the turnbuckle The lid of the guardrail strut sheath pipe according to claim 1, wherein a turnbuckle bolt that is screwed into the first nut and the second nut is used instead of the nut.

  The lid of the present invention is a strong heavy object that is entirely made of metal, for example, iron, and whose surface is coated with rust prevention. Therefore, when the lid is put on the sheath pipe, there is no possibility that the lid is detached from the sheath pipe due to vibration or the like, or the lid is deformed or broken due to vehicle running or the like. The lid can be attached to the sheath tube easily and reliably using a turnbuckle.

FIG. 1 is a diagram schematically showing an installation state of guardrails provided in a median strip of a road and a state in which the guardrails are removed. FIG. 2 is an external perspective view of the lid 10 according to an embodiment of the present invention. FIG. 3 is a side cross-sectional structure diagram of the state where the lid 10 is narrowed. FIG. 4 is a cross-sectional structural view in a side view with the lid 10 expanded. FIG. 5 is a bottom view of the state where the lid 10 is narrowed. FIG. 6 is a bottom view of the state where the lid 10 is expanded. FIG. 7 is a cross-sectional structural view in side view showing the lid 10 attached to the sheath tube 4. FIG. 8 is a diagram illustrating a configuration example of the turnbuckle nut. FIG. 9 is a cross-sectional structural view of a lid 10 according to another embodiment of the present invention in a side view. FIG. 10: is a top view which shows the form of a pair of upper cover body which concerns on other embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram (A) schematically showing an installation situation of guardrails provided in a median strip of a road, and a diagram (B) in a state where the guardrails are removed. As shown to FIG. 1 (A), the guardrail 1 is installed in the median separation zone before facing traffic. Guardrail 1 is supported by guardrail support 2. The guardrail support 2 is installed by being inserted into, for example, an iron sheath pipe 4 embedded in the ground 3. The surface of the road 3 is covered with asphalt coating 5.

In such a state, when removing the guard rail 1 of the central separation band for lane switching or the like and allowing the vehicle to face each other, as shown in FIG. As a result, the guardrail support 2 and the guardrail 1 are removed. The upper end opening 41 of the sheath tube 4 after being removed is closed by the lid 10.
This device proposes a lid 10 having a novel configuration for closing the upper end opening 41 of the sheath tube 4.

  FIG. 2 is an external perspective view of the lid 10 according to an embodiment of the present invention. FIG. 3 is a side sectional structural view of the state where the lid 10 (the interval between the semi-cylindrical bodies 11 and 12) is narrowed, and FIG. FIG. 5 is a bottom view in a state where the lid 10 (the interval between the semi-cylindrical bodies 11 and 12) is narrowed, and FIG. 6 is a bottom view in a state where the lid 10 (the interval between the semi-cylindrical bodies 11 and 12) is expanded. FIG.

  Referring to FIGS. 2 to 6, the lid 10 includes a pair of semi-cylindrical bodies 11 and 12 and a pair of upper plate bodies 13 and 14 joined to the upper ends of the semi-cylindrical bodies 11 and 12, respectively. have. The semi-cylindrical bodies 11 and 12 and the upper dish bodies 13 and 14 are both made of metal made of, for example, iron. Therefore, the semi-cylindrical bodies 11 and 12 and the upper dish bodies 13 and 14 are joined by welding, respectively.

  The semi-cylindrical bodies 11 and 12 are divided into two in the direction of the central axis extending vertically, and have a symmetrical shape with respect to the dividing plane. That is, the semi-cylindrical body 11 has a semi-cylindrical shape that forms a left-side semicircular arc, and the semi-cylindrical body 12 has a semi-cylindrical shape that forms a right-side semi-circular arc. Strictly speaking, the semi-cylindrical bodies 11 and 12 are not perfect semi-cylindrical bodies, and semi-cylindrical bodies whose arc angles are slightly smaller than half of the entire circumference are used.

  The upper plate bodies 13 and 14 joined to the upper end edges of the semi-cylindrical bodies 11 and 12 are plate plates each having a substantially semicircular shape in a plan view and constituting a left arc and a right arc, respectively. The upper plate bodies 13 and 14 have flange portions 13f and 14f that horizontally project outward from the outer peripheral edges of the upper ends of the semi-cylindrical bodies 11 and 12 by a certain amount. These flange portions 13 f and 14 f engage with the periphery of the upper end opening 41 of the sheath tube 4, and the upper plate bodies 13 and 14 close the sheath tube 4.

  The semi-cylindrical body 11 is provided with a first bolt 15 so as to protrude in the horizontal direction from the inner peripheral surface center 111. For example, a left male screw is formed on the first bolt 15. The base (head) 151 of the first bolt 15 is fixed to the semi-cylindrical body 11 by welding. Similarly, the semi-cylindrical body 12 is provided with the second bolt 16 so as to protrude from the inner peripheral surface center 121 in the horizontal direction. The second bolt 16 is formed with a right male screw opposite to the first bolt 15. The base (head) 161 of the second bolt 16 is fixed to the semi-cylindrical body 12 by welding.

The first bolt 15 and the second bolt 16 are combined so that their tips are opposed to each other, and a turnbuckle nut 17 is screwed there.
The turnbuckle nut 17 is a long nut shown in FIG. 8 as an example, and when viewed in the length direction, a left female screw is formed on the left half and a right female screw is formed on the right half.
By rotating the turnbuckle nut 17 screwed into the first bolt 15 and the second bolt 16, the interval between the first bolt 15 and the second bolt 16 can be narrowed or expanded. In this configuration, the distance between the bodies 11 and 12 can be reduced as shown in FIGS.

  When using the lid 10, that is, when closing the upper end opening 41 of the sheath tube 4 with the lid 10, the lid 10 is set on the sheath tube 4, and the turnbuckle nut 17 is inserted from the center gap between the upper plates 13 and 14. In order to operate, a spanner is inserted and the turnbuckle nut 17 is rotated. Then, the interval between the upper plate bodies 13 and 14, in other words, the interval between the semi-cylindrical bodies 11 and 12 is increased, and the outer peripheral surfaces of the semi-cylindrical bodies 11 and 12 are brought into contact with the inner peripheral surface of the sheath tube 4.

Accordingly, as shown in FIG. 7, the lid 10 is securely attached to the upper end opening 41 of the sheath pipe 4, and the lid 10 does not come off even if the lid 10 is vibrated due to traveling of a large vehicle or the like.
It is preferable to cover the cover 10 with the lid 10 so that the linear gap formed between the upper plate bodies 13 and 14 divided into two is substantially perpendicular to the vehicle traveling direction. This is because when the vehicle travels on the lid 10, the influence on the lid 10 is the least.

  In the above-mentioned embodiment, it was set as the structure provided with the reinforcing rib 19 shown with the dashed-dotted line in FIG.3, FIG.4, FIG.7. That is, in order to improve the load resistance of the upper plate bodies 13 and 14, the reinforcing rib having a substantially right triangle shape in a side view between the lower surface of the upper plate bodies 13 and 14 and the upper part of the inner peripheral surface of the semi-cylindrical bodies 11 and 12. 19 was welded. However, when the upper plate bodies 13 and 14 are thick and have sufficient load resistance, the reinforcing ribs 19 may be omitted.

  In the above-described embodiment, the semi-cylindrical bodies 11 and 12 are each provided with the first bolt 15 and the second bolt 16 and connected with the turnbuckle nut 17, but the first bolt 15 is replaced with the first bolt 15. It is good also as a structure which provides a nut, replaces with the 2nd volt | bolt 16, provides a 2nd nut, and connects both with a turnbuckle bolt. An example of such a configuration is shown in FIG. In FIG. 9, 25 is a first nut, 26 is a second nut, and 27 is a turnbuckle bolt.

  FIG. 10: is a top view which shows the form of a pair of upper cover body which concerns on other embodiment of this invention. As shown in FIG. 10, the upper plate bodies 13A and 14A may have waveforms in which the chord portions 131 and 141 facing each other are not a straight line but are alternately combined. Moreover, it is good also as a structure by which the notch parts 132 and 142 for tool (spanner) insertion were formed in the center part of the string parts 131 and 141 which the upper plate bodies 13A and 14A oppose.

  The present invention is not limited to the configuration of the above embodiment, and includes various modifications that can be made within the scope of the claims.

10 Lids 11 and 12 Semi-cylindrical bodies 13 and 14 Upper plate bodies 13f and 14f Flange portion 15 First bolt 16 Second bolt 17 Turnbuckle nut 19 Reinforcement rib 25 First nut 26 Second nut 27 Turnbuckle bolts 111 and 121 Center of peripheral surface 131, 141 String portion 132, 142 Notch

Claims (2)

A pair of metal semi-cylindrical bodies that are divided into left and right in the direction of the central axis and are symmetrical with respect to the dividing plane;
A flange portion that is joined to the upper ends of the pair of metal semi-cylindrical bodies, closes the upper-end opening of the semi-cylindrical bodies, and projects horizontally outward from the outer peripheral edge of the semi-cylindrical bodies by a certain amount. , A pair of metal upper plates having a symmetrical shape with respect to the dividing surface;
A first bolt having a left male screw or a right male screw formed at least at a tip portion thereof, which is provided to protrude in the horizontal direction from the center of the inner circumferential surface of one half cylinder of the pair of metal half cylinders;
A second bolt that is provided to protrude in the horizontal direction from the center of the inner peripheral surface of the other half-cylindrical body of the pair of metal semi-cylindrical bodies, and has a right male screw or a left male screw formed at least at a tip portion;
To adjust the distance between the pair of metal semi-cylindrical bodies by screwing with at least the front end portions of the first bolt and the second bolt and adjusting the distance between the front ends of the first bolt and the second bolt. With turnbuckle nuts,
A cover for a guardrail strut for a guardrail strut. A first nut formed with a left female screw or a right female screw is provided instead of the first bolt so as to protrude horizontally from the center of the inner peripheral surface of the one half cylinder,
A second nut in which a right female screw or a left female screw is formed instead of the second bolt so as to protrude in the horizontal direction from the center of the inner peripheral surface of the other semi-cylindrical body,
The cover of the guardrail strut sheath pipe according to claim 1, wherein a turnbuckle bolt that is screwed into the first nut and the second nut is used instead of the turnbuckle nut.

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