JP3224626U - Preventing grating from coming off - Google Patents

Abstract

An object of the present invention is to prevent the grating from popping out for a long period of time without any corrosion problem, and at the same time, to easily attach and detach the grating and to shorten the attaching and detaching time. I will provide a. SOLUTION: A detachment preventing structure for the grating 25, which uses a detachment preventing device 30A provided with a fiber strap knitted in a belt shape or a rope shape, is detachable between a part of the drainage basin 20 and the grating. Connected to. [Selection diagram] Fig. 1

Description

  The present invention relates to a technology for preventing a grating from jumping out on a shoulder of a road or the like, and more particularly, to a structure for preventing a grating from coming off using a device for preventing coming off of a reinforcing fiber.

There is a drainage facility on the shoulder of the highway. The drainage basin, which is a drainage facility, is equipped with gratings (drainage lids) made of steel in a grid.
Since the grating is constantly exposed to the road surface, the grating may come off the receiving frame and suddenly jump out as the traveling vehicle passes.
Therefore, conventionally, a method of fixing the grating to the receiving frame using a plurality of bolts (Patent Documents 1 and 2), incorporating a connecting pin that slides laterally on either the grating side or the receiving frame side, and Various disconnection prevention techniques such as a method of connecting the spaces with connecting pins (Patent Documents 3 and 4) and a method of connecting the grating to the drainage basin using a chain have been proposed, and one or more of these are combined and fixed. ing.
Since heavy vehicles travel at high speed directly above the grating and the jumping force repeatedly acts on the grating, the fixtures of the grating require high strength and durability, so most fixtures are made of metal materials .

JP-A-53-104073 JP 2009-299376 A JP 2007-146562 A JP 2011-252332 A

The prior art described above has the following problems.
<1> At present, several decades after the installation of the drainage basin, corrosion of fixing devices such as bolts and chains has considerably progressed.
Particularly in cold regions, antifreeze agents (calcium chloride, etc.) are frequently used, so that the fasteners are rapidly corroded.
<2> As a countermeasure, it has been proposed to replace the metal fixtures installed in the existing drainage basin with new ones. However, not only is the replacement fixture expensive, but the new fixtures are not corrosive. It has a problem.
<3> The method using the slide type connecting pins described in Patent Documents 3 and 4 increases the installation cost of the drainage basin due to the complicated locking structure, and has a problem of corrosion because the connecting pins are made of metal. Remains.
<4> The grating is removed and the drainage facilities are regularly inspected.
Multiple fixtures have to be manually removed and reassembled, which not only takes a lot of time and effort to attach and detach the grating, but also prolongs the inspection time in high-traffic areas. Security is threatened.
<5> In particular, maintenance work for drainage facilities installed in tunnels or bridges with narrow shoulders is a high-risk work.

The present invention has been made in view of the above points, and an object of the present invention is to provide at least one of the following grating prevention structures.
<1> There is no problem of corrosion and the effect of preventing the grating from popping out can be maintained for a long period of time.
<2> The grating attachment / detachment operation is easy, the attachment / detachment time is short, and the maintenance of drainage facilities is excellent.

The present invention comprises a receiving frame in which a drainage basin provided adjacent to a concrete gutter has a rectangular shape, and a grating housed inside the receiving frame to prevent the grating housed in the receiving frame of the drainage basin from coming off. A belt-shaped or rope-shaped fiber strap having a total length that can be wound between the receiving frame of the drainage basin and the grating, and a buckle provided at one end of the strap. Using a slip-off prevention device that is capable of adjusting the loop length of the strap by sliding the strap inserted through the buckle, and wrapping the strap of the slip-off prevention device around a place adjacent to the receiving frame of the drainage basin and the grating frame. And detachably tied.
In another embodiment of the present invention, a plurality of locations of the receiving frame and the grating of the drainage basin may be bound by a plurality of detachment prevention devices.
In another embodiment of the present invention, a gutter is located adjacent to the drainage basin, and a location adjacent to a drainage basin receiving frame and a grating frame using a slit-shaped water collecting groove formed in a drainage lid. The strap of the device for preventing disengagement may be wrapped around.
In another embodiment of the present invention, the strap of the slip-off prevention device is made of a reinforcing fiber.

  The present invention has at least one of the following effects.

<1> Since the grating is bound and connected to the receiving frame of the drainage basin using a fiber slip prevention device, there is no problem that the slip prevention device is corroded, and the length is longer than that of conventional metal fittings. The effect of preventing separation of grating can be maintained over a period.
<2> Since the operation of attaching and detaching the detachment prevention device is easy, the attaching and detaching time of the grating can be greatly reduced, and the maintenance of the drainage facility is excellent.
<3> When installing the slippage prevention device, there is no need to apply special processing to the drainage basin or grating, and the prevention device can be easily installed in the existing drainage basin.
<4> Even in a site with a lot of traffic, in a tunnel with a narrow road shoulder, a bridge, or the like, an inspection can be performed in a short time, so that the risk of danger to workers is greatly reduced.

A perspective view of a partially broken drainage basin Partial sectional view of the receiving frame and grating that compose the drainage basin It is explanatory drawing of a detachment prevention apparatus, (A) is a perspective view of a detachment prevention apparatus, (B) is explanatory drawing of another buckle.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<1> Drainage Facility FIG. 1 shows a drainage facility installed on a road shoulder or the like of a road. In this example, a plurality of concrete gutters 10 continuously laid on the road shoulder and a side gutter 10 at a predetermined interval are provided. And a drainage basin 20 installed therebetween.

<1.1> Ditch The pipe formed inside the ditch 10 communicates with the drainage basin 20 at an underground portion.
In this example, a form in which the water collecting groove 12 is opened in the lid portion 11 formed integrally with the side groove 10 is shown, but the side groove 10 may be various known side grooves.

<1.2> Drainage basin The drainage basin 20 includes a receiving frame 21 having a rectangular shape, and a metal grating 25 that can be accommodated in the inner step of the receiving frame 21.
The receiving frame 21 is a concrete frame, and both sides thereof are joined to the end face of the side groove 10.
The grating 25 includes a rectangular frame 26, a thin plate-shaped bearing bar 27 and a cross bar 28 provided in the frame 26 so as to intersect in the vertical and horizontal directions.

<2> Detachment Prevention Device The detachment prevention device 30 is a flexible non-metallic connection means for connecting the grating 25 and the drainage basin 20 so that the grating 25 does not come off.
In this example, a strap 31 in which reinforcing fibers are knitted in a belt shape or a rope shape, and a buckle 32 in which the strap 31 is formed into a loop and the loop length is adjustable, are closed by connecting the strap 31 to the buckle 32. The detachment prevention device 30 capable of forming a loop will be described.
The detachment prevention device 30 is formed of a nonmetallic material in order to avoid the problem of corrosion.
Since the detachment prevention device 30 includes only the strap 31 and the buckle 32, it can be manufactured at low cost.

<2.1> Strap The strap 31 is a connecting member made of a flexible reinforcing fiber for connecting the grating 25 and the drainage basin 20.
The strap 31 has a total length that can be wound around the receiving frame 21 of the drainage basin 20 and the frame 26 of the grating 25.

The strap 31 is formed by knitting a reinforcing fiber having excellent tensile strength and durability in a belt shape or a rope shape.
In this example, a configuration in which the strap 31 has a belt shape will be described.
Examples of the reinforcing fiber include aramid fiber and polyester fiber as examples of the high-strength fiber.
Further, the entire peripheral surface of the reinforcing fiber constituting the strap 31 may be covered with a protective film made of resin.

<2.2> Buckle The buckle 32 is a resin-made connecting tool for forming the strap 31 into a closed loop shape.
FIG. 3A shows a type in which a buckle 32 is attached to one end of a strap 31, and the other end of the strap 31 is inserted into the buckle 32 and turned back.
By tightening the other end side of the strap 31 to the buckle 32, the loop length of the strap 31 formed in the closed loop can be adjusted.

FIG. 3 (B) shows a one-touch type buckle 32, which has a tongue portion 32 a that can be fitted to each other at both ends of the strap 31 and a buckle portion 32 b to which the tongue portion 32 a can be attached and detached. The loop can be closed by the fitting operation of the buckle part 32b and the buckle part 32b.
A portion near the end of the strap 31 is folded back and anchored to the end of the tongue portion 32a or the buckle portion 32b, and the loop length of the strap 31 can be adjusted by tightening one of the straps 31.

[How to use the detachment prevention device]
A method of using the detachment prevention device 30 will be described with reference to FIGS.

<1> Fixing of grating As shown in FIG. 1, a strap of a non-loop-shaped detachment prevention device 30 is provided between a receiving frame 21 of a drainage basin 20 and a frame 26 of grating 25 by utilizing a water collecting groove 12 of a side groove 10. After winding 31, the buckle 32 and the end of the strap 31 are connected and the strap 31 is looped.
Thereafter, the strap 31 is tightened so as not to be loosened.
The detachment preventing device 30 may fix only one of the left and right sides of the grating 25 to the receiving frame 21. However, if the left and right sides of the grating 25 are fixed to the receiving frame 21, the detachment preventing effect of the grating 25 is enhanced.

Since the detachment prevention device 30 is a lightweight object of about several hundred grams, it is very easy to carry and handle on site.
In addition, no special processing is required for the drainage basin 20 and the grating 25 when installing the detachment prevention device 30, and the detachment prevention device 30 can be installed in the current state.

As described above, a part of the grating 25 can be fixed to the receiving frame 21 of the drainage basin 20 by a simple operation of merely installing the detachment prevention device 30.
Even if vibrations or shocks repeatedly act during running of the vehicle, there is no fear that the disengagement prevention device 30 is loosened by the vibrations or shocks, and there is no fear of corrosion.
Furthermore, there is no fear that the grating 25 and the receiving frame 21 will be damaged by the detachment prevention device 30 made of the reinforcing fiber.
Accordingly, the effect of preventing the grating 25 from coming off can be maintained for a long period of time as compared with the conventional metal fittings.

<2> Periodic inspection It is necessary to remove the grating 25 during the periodic inspection of the drainage facility.
In the present invention, since the operation of releasing the loop of the detachment prevention device 30 can be easily performed manually, the detachment prevention device 30 can be easily removed from the drainage basin 20 in a short time.
Since the grating 25 can be removed from the receiving frame 21 by removing one or more of the detachment prevention devices 30, the periodic inspection of the drainage basin 20 can be promptly performed.
When the periodic inspection of the drainage basin 20 is completed, the grating 25 is returned to the original position again and fixed with the disengagement prevention device 30.
Inspections can be performed in a short period of time even at sites with heavy traffic, in tunnels with narrow road shoulders, bridges, and the like, greatly reducing the risk of workers being exposed to danger.

DESCRIPTION OF SYMBOLS 10 ... Side groove 11 ... Side groove lid 12 ... Side groove collecting groove 20 ... Drainage basin 21 ... Drainage basin receiving frame 25 ... Grating 26 ... Grating frame 27 ..Grating bearing bar 28 Grating cross bar 23 Receptor 30

Claims (4)

A drainage basin provided adjacent to the concrete gutter has a rectangular receiving frame and a grating housed inside the receiving frame, and the grating is prevented from coming off the grating housed in the receiving frame of the drainage basin. Prevention structure,
A strap having a total length that can be wound between the receiving frame and the grating of the drainage basin and having a belt-shaped or rope-shaped fiber strap, and a buckle provided at one end of the strap, and a strap inserted through the buckle. Slide the strap to adjust the loop length of the strap.
Characterized in that the strap of the slip-off prevention device is wrapped around a place adjacent to the receiving frame and the grating frame of the drainage basin and detachably bound.
Grating detachment prevention structure.   The structure for preventing the grating from coming off according to claim 1, wherein a plurality of places of the receiving frame and the grating of the drainage basin are bound by a plurality of coming off prevention devices.   A gutter is located adjacent to the drainage basin, and a strap of a slip-off prevention device is wrapped around a place adjacent to a catching frame and a grating frame of the drainage basin using a slit-shaped water collecting groove formed in a water collecting lid of the gutter. The structure for preventing the grating from coming off according to claim 1 or 2, wherein:   The structure for preventing the grating from coming off according to any one of claims 1 to 3, wherein the strap of the device for preventing coming off is made of a reinforcing fiber.

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