JP2014132144A - Grating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grating which can surely prevent jumping up without requiring any processing of a gutter.SOLUTION: A concrete gutter 4 is used where right and left side wall parts 2, 2 are provided, each of the wall parts 2, 2 has a lid receiving part 1 on an inside upper edge, and a part below the lid receiving part 1 is formed in a thin part 8 through a tapered surface 7. A pedestal 12 equipped with a raising material 11 on both sides is mounted while putting the raising material 11 on the lid receiving part 1. The raising material 11 is mounted with a jumping prevention metal fitting 17 whose lower side is inclined outward. A rubber mat 21 mounted to the jumping prevention metal fitting 17 is pressed against the tapered surface 7 of the side wall part 2 to be retained without backlash. A grating 5 fixed on the pedestal 12 is retained together with the pedestal 12 to prevent jumping up.

Description

  The present invention relates to a grating laid in a side groove or a transverse groove made of concrete.

  Concrete side grooves and cross grooves (hereinafter simply referred to as side grooves) installed to drain rainwater on roads and sidewalks are generally from the left and right side walls and the bottom wall connecting both side walls at the bottom. The cross section has a substantially U shape, and a lid receiving portion for placing a groove cover such as a grating is formed on the inner upper edge of both side wall portions. Usually, the groove cover is laid directly on the lid receiving portion. It is placed by placing it on a receiving frame having an angled cross section attached to the lid receiving part or on a pedestal horizontally placed between the lid receiving parts on both side wall parts, or via a square pipe-like raising material This is done by placing it on the lid receiving part.

  As for the side grooves, as shown in FIG. 1, for the purpose of reducing the weight of the side grooves and increasing the water passage area, a thin wall structure is known with the side wall portion 2 below the lid receiving portion 1 interposed therebetween.

  As for the grating, there is known a structure that prevents the jumping of the grating when the vehicle travels on the grating. In such a known structure, a receiving frame is formed on the lid receiving portion such as a side groove and protrudes from the receiving frame. An anchor bolt is attached, and the grating mounted on the receiving frame is generally fixed to the anchor bolt. However, the square pipe-shaped raising material placed on the lid receiving part such as a side groove is attached to both sides. In addition, the base provided with a connecting member for connecting the two raising members is horizontally mounted on the lid receiving portion via the raising member, and then the extended piece attached to the connecting member of the base is attached to the ceiling of the concrete groove block. A structure having a structure in which the grating is fixedly disposed on the receiving frame and then the grating is fixedly arranged (Patent Document 1), an auxiliary member fixed to the grating, and a clamping plate connected to the auxiliary member Also known as the fastening structure across the bottom plate portion of the receiving frame attached to the lid receiving portion (Patent Document 2).

Japanese Patent No. 4454579 Japanese Patent No. 4782149

  In the structure where the anchor bolt is attached together with the receiving frame to the lid receiving part such as the side groove, the concrete is placed after the bolt is previously attached to the receiving frame, but the bolt tends to move or tilt when placing concrete, If the bolt moves or tilts, it tends to interfere with securing the grating. In addition, when anchor bolts are installed later in the side grooves, etc., it is easy to install the bolts in the specified position and orientation, but the workability is poor and the anchor bolts are attached. It tends to cause chipping.

  In the structures disclosed in Patent Documents 1 and 2, the above-mentioned problems do not occur, but, as disclosed in Patent Document 1, an extension piece is provided on the grating and applied under the adjacent groove lid. If the adjacent groove cover is not fixed, both the grating and the adjacent groove cover may be lifted by traveling of the vehicle, and the effect of preventing the jumping up cannot be sufficiently exhibited.

  In addition, in the one disclosed in Patent Document 2, it is necessary to perform processing for receiving the fastening plate in the lid receiving portion in the existing side groove or the like, and it cannot be applied to the existing side groove or the like.

  An object of the present invention is to provide a grating having a structure capable of preventing jumping without causing the above-described problem.

  The invention according to claim 1 has a substantially U-shaped cross section comprising left and right side wall portions and bottom wall portions connecting both side wall portions at the lower end, and lid receiving portions are formed on the inner upper edges of both side wall portions. In addition, the side wall portion below the lid receiving portion is attached between the lid receiving portions such as the side grooves that are thinned through a tapered surface that slopes downward toward the end following the lid receiving portion. A lifting member that is fixed and mounted on the lid receiving portion or a pedestal that is placed between the lid receiving portions or a grating that is applied to the tapered surface of the side wall portion such as the side groove is attached to the grating itself. It is characterized by that.

The invention according to claim 2 is the invention according to claim 1, wherein the pedestal is provided with a raising material placed on the lid receiving portion at both ends, the raising material is attached to the raising material, and the grating is provided. It is attached to the raising material or the base so as to be removable with bolts,
The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, an elastic material made of rubber or resin is attached to a contact surface of the spring-up preventing metal fitting with respect to the tapered surface.

  According to the first aspect of the present invention, the existing side groove as shown in FIG. 1 is used as the side groove and the use of the tapered surface such as the side groove makes it possible to remove the grating with the spring-up preventing metal fitting applied to the tapered surface. It is designed to prevent stopping and jumping up, and it is possible to reliably prevent jumping of the grating without requiring any processing on the side groove or the like.

  According to the second aspect of the present invention, when attaching the spring-up prevention metal fitting to the raising material, it is possible to easily attach the spring-up prevention metal fitting to the pedestal without removing the grating from the pedestal, and the grating. By removing it from the pedestal, it becomes possible to clean the side grooves and the like.

  According to the invention which concerns on Claim 3, the backlash prevention metal fitting and taper surface can be eliminated by providing an elastic material in the metal spring prevention metal fitting applied to the taper surface of a side wall part.

Sectional drawing, such as a side groove. Sectional drawing, such as a side groove | channel which attached the grating. The top view of grating. Sectional drawing of the state which attached the base to the side groove | channel. Sectional drawing which attached the raising prevention metal fitting to the raising material.

Hereinafter, the grating according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 2 shows the grating 5 attached to the known side groove 4 shown in FIG. 1, and the side groove 4 has the left and right side walls 2, 2 and both side walls 2, 2 at the lower end as shown. Consists of bottom wall portions 3 to be connected, and both side wall portions 2 and 2 are formed with lid receiving portions 1 whose bottom surfaces are inclined with an inward downward slope on the inner upper edges, and the side wall portions 2 and 2 below each lid receiving portion are respectively The thin-walled portion 8 continues from the lid receiving portion 1 to the tapered surface 7 that slopes downward toward the end.

  The grating 5 is placed on a pedestal 12 provided with a raised material 11 placed on the lid receiving portion 8 at both ends, and the raised material 11 is screwed into a nut 14 fixed to the raised material 11. So that it can be removed. As shown in FIG. 3, the grating 5 includes a bearing bar 5a, a twist bar 5b fixed orthogonally to the parallel bearing bar 5a, and an end plate 5c fixed to the end of the bearing bar. At four corners, mounting plates 16 having bolt through holes 15 through which the bolts 13 are passed are fixed by welding. FIG. 3 shows a state where bolts 13 are passed through three corners among the four corners.

  The raising member 11 is a substantially square hollow cross-sectional structure in which an angle member 11a having a substantially inverted L section and a member 11b having a taper 11c that matches or substantially matches the tapered surface 7 are combined with the member 11b inside. I am doing.

  Further, the upper end of the spring-up prevention metal fitting 17 is sewn with a bolt 18 and fixed to the inner surface of the raising member 11 with a nut 19. The jump-up preventing metal fitting 17 is attached with a mud 21 made of an elastic material made of rubber or resin on the outer side of the lower side portion which is bent at an obtuse angle and inclined outward at the intermediate portion, and the mat 21 is attached to the side wall portion. 2 is applied to the tapered surface 7.

  At the time of attaching the grating 5, first, the pedestal 12 having the raised material 11 connected to both ends is mounted by placing the raised material 11 on the lid receiving portion 1 (FIG. 4). Next, the upper ends of the spring-up prevention metal fittings 17 are attached to the left and right raising members 11 with bolts 18 and nuts 19, respectively, and the mat 21 is pressed against the tapered surface 7 so that the base 12 does not rattle. At the same time, the base 13 is prevented from coming off and rotating (FIG. 5). Thereafter, the grating 5 is placed on the pedestal, and bolts 13 are screwed and fixed to the nuts 14 of the raising material 11 at the four corners of the grating 5 (FIG. 2).

  According to the present embodiment, the existing side groove 4 shown in FIG. 1 is used, the pedestal 12 and the grating 5 are attached to the side groove 4 without any processing, and the pedestal 12 attached to the side groove 4 is a side groove. The grating 5 fixed on the pedestal is fixed, and is prevented from jumping up.

  In the above-described embodiment, the spring-up preventing metal fitting 17 is attached to the raising member 11, but it may be attached to a pedestal that is laid directly on the lid receiving portion 8 or directly to the grating itself.

1 .. Lid receiving part 2.. Side wall part 4. Side groove 5.. Grating 7. Tapered surface 8. Thin wall part 11. Raised material 12. Base 17.

Claims (3)

  The left and right side wall portions and bottom wall portions connecting the both side wall portions at the lower end form a substantially U-shaped cross section. Both side wall portions are formed with lid receiving portions on the inner upper edges, and below the lid receiving portions. A grating that is attached between the side wall of the concrete side groove or the transverse groove that is thinned through a tapered surface that slopes downwardly in a divergent shape following the lid receiving part, and is fixed to the grating. Further, the raising material placed on the lid receiving portion or the pedestal horizontally mounted between the lid receiving portions, or the jumping prevention metal fitting applied to the tapered surface of the side wall portion of the side groove or the transverse groove is attached to the grating itself. Grating characterized by that.   The pedestal is provided with a raising member placed on the lid receiving portion at both ends, the raising member is attached to the raising member, and a grating is removably attached to the raising member or the pedestal with bolts. The grating according to claim 1.   The grating according to claim 1 or 2, wherein an elastic material made of rubber or resin is attached to a contact surface of the spring-up preventing metal fitting with respect to the tapered surface.