Grating fixture and grating installation method

Abstract

To provide a grating fixture capable of newly installing a grating on an existing drainage ditch without newly constructing the drainage ditch, wherein the prior art by the present applicant is used when newly constructing a drainage ditch, remains well-received, and has gained high evaluation from the market.SOLUTION: A grating fixture is formed by bending a flat plate into a substantially C-shaped support, wherein an attachment part for mounting an adjuster to adjust the height and inclination of the grating is provided on a top face of the support, and a fastener for fixing the grating is provided on a top face of the adjuster.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a grating fixture and a grating installation method used when constructing a drainage ditch of a building or the like.

Background Art

[0002] As a conventional technique, a pedestal is provided at the lower part of two support plates formed by bending a flat plate to form a top plate on the upper surface and a horizontal grating locking portion below it, and a holding portion continuously provided in the vertical direction is provided on the grating locking portion. A grating support characterized in that a detachable width holding plate is provided between the grating locking portions of the two support plates, and during the construction of the disposable concrete placement, the upper edge of the lower plate of the base anchor is visible at a required interval, and a long hole for placing the grating support is drilled between the anchor bolts of the base anchor. A first step of preliminarily attaching an upper plate and temporarily fixing it with nuts; a second step of fixing the grating support on the upper plate and performing vertical adjustment with each nut to level the concrete finish; a third step of performing horizontal adjustment with each nut to horizontally adjust the grating support; a fourth step of reinforcing the base anchor with reinforcing bars, placing paving concrete, and finishing along the top plate; a fifth step of removing the width holding plate and constructing a water gradient on the inner bottom surface of the grating support; and a sixth step of arranging and fixing a bolt-fixed grating between the grating locking portions. There is a drainage ditch installation method characterized by consisting of these steps. (See Patent Document 1)

[0003] As another conventional technique, in a grating support fitting formed by bending a flat plate to form a top plate on the upper surface and a grating locking portion below the top plate, and providing a connecting portion consisting of an insertion port and a stopper detachably inserted into the insertion port inside two support plates, and forming a locking piece on the bottom surface, the grating support fitting is characterized in that an air vent hole is provided in the top plate. When placing disposable concrete, the construction is carried out at a required interval so that the top edge of the lower plate of the base anchor is visible. An upper plate on which the grating support fitting is placed is pre-attached between the anchor bolts of the base anchor and temporarily fixed with nuts in a first step. In a second step, the grating support fitting is placed on the upper plate, and each nut is adjusted to level the concrete finish. In a third step, the horizontal level of the grating support fitting is adjusted. To fix the support plate, a clamping portion of a clamping plate of a mounting fitting is attached to the upper plate, a hook shaft is attached to the support portion, the tip of the hook is locked to the locking piece of the support plate, and the clamping portion is fixed with bolts and nuts, and the tip of the hook is locked and fixed to the locking piece with nuts. There is a drainage ditch installation method characterized by performing reinforcing steel bar arrangement for reinforcement around the base anchor, placing paving concrete, and in a fourth step, placing the grating within the grating locking portion of the support plate so that the paving concrete can be surely placed around the support plate. (See Patent Document 2)

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The above two conventional techniques are inventions of the present applicant and are used when newly constructing a drainage ditch. They are still well-received and have obtained market evaluation. This application is not about newly constructing a drainage ditch, but about newly installing gratings on an existing drainage ditch.

[0006] The present invention aims to solve the problems existing in such conventional configurations. Due to long-term use, the drainage ditches constructed by existing traditional methods (such as made of concrete) may be damaged and may be left as they are. The present invention provides a grating fixture and a grating installation method that can prevent the fall and injury of motorcycles, pedestrians, etc. by installing grating fixtures on them.

Means for Solving the Problems

[0007] To achieve the above object, the present invention is characterized in that an attachment portion for attaching an adjuster for adjusting the height and inclination of the grating is provided on the upper surface of a support formed by bending a flat plate into a substantially U-shape, and a fixture for fixing the grating is provided on the upper surface of the adjuster. Further, the support is provided with an attachment portion by a female support screw on the upper surface. Furthermore, the adjuster is provided with a bolt screwed into the female support screw portion, and notch portions having a gap with respect to the bolt are provided on both sides of a flat plate-shaped adjustment plate laid between the bolts, and a connecting female screw portion is provided at the center. Furthermore, the fixture is provided with a bolt screwed into the connecting female screw portion at the center of a fixing plate that is flat plate-shaped and provided with grating locking portions on both sides. In the installation method, it is characterized by including an arrangement step of placing the assembled support and adjuster on the inner bottom surface of the existing drainage ditch according to the length and pitch of the grating, a level adjustment step of adjusting the height and inclination of the grating so that it becomes on the same horizontal plane, a grating arrangement step of arranging the grating on the upper surface of the adjuster, and a fixing step of connecting and fixing the grating to the fixture.

Effects of the Invention

[0008] 1), Due to the configurations of the support, the adjuster, and the fixture, gratings can be installed on existing concrete drainage ditches, etc. 2), Even if the bottom surface of the drainage ditch is uneven, it can be adjusted vertically by the adjusting device, and can be adjusted horizontally according to the bottom surface inclined drainage ditch. 3), At the grating locking part of the fixing device, by tightening the connected gratings with bolts, it can be easily and detachably fixed. 4), By the grating installation method, the grating can be easily constructed on the existing drainage ditch, and the fall and injury of motorcycles and pedestrians can be prevented.

Brief Description of the Drawings

[0009]

Figure 1

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Modes for Carrying Out the Invention

[0010] First, the grating fixture will be described. 1 is a support for a grating fixture. Mounting parts 1b·1b with support female screws are provided on both sides of the upper surface of a support body 1a formed by bending a flat plate into a substantially U-shape. (Refer to FIGS. 1 and 2). 2 is an adjuster for a grating fixture. Bolts 2a·2a provided with two tightening nuts 2a1 are provided, and cutouts 2b1·2b1 having a width larger than the shaft diameter of the bolts 2a·2a and having some play (gap) are provided on both sides of a flat plate-shaped adjustment plate 2b laid between the bolts 2a·2a, and a connecting female screw part 2b2 is provided at the center. (Refer to FIGS. 3 and 4). 3 is a fixture for a grating fixture. A bolt 3b for screwing into a connecting female screw part 2b2 is provided at the center of a fixing plate 3a having a flat plate shape and provided with substantially U-shaped grating locking parts 3a1·3a1 on both sides. (Refer to FIGS. 5 and 6).

[0011] Next, a grating installation method will be described. In an existing concrete drainage ditch H (bottom surface of unevenness F), such as a drainage ditch of a gas station, bolts 2a·2a of the adjuster 2 are screwed into the mounting parts 1b·1b of the support 1 and connected. In this state, an arrangement process (refer to FIG. 7) of placing it according to the pitch (length) of the grating G (not shown), adjusting the height and inclination of the grating G (not shown), moving the bolts 2a·2a up and down so as to be on the same horizontal plane, and thus the adjustment plate 2b also moves up and down. Even if it is formed obliquely, the shaft of the bolts 2a·2a does not buffer (due to the gap) within the cutouts 2b1·2b1, and it is fixed with the tightening nuts 2a1·2a1 to maintain the level and adjust the level (refer to FIG. 8). By continuously performing the construction of hooking the grating locking parts 3a1·3a1 of the fixing plate 3a of the fixture 3 on the end plates T1·T2 of the grating G and screwing and connecting the bolt 3b to the connecting female screw 2b2, the grating can be installed.

[0012] In the above embodiment, other shapes (forms) are also conceivable for the support, adjuster, and fixture as long as they have similar functions. In addition to the concrete drainage ditch, various types such as those made of iron are also conceivable.

Explanation of Reference Numerals

[0013] 1―――Supporting tool 1a――Supporting body 1b――Mounting part 2―――Adjusting tool 2a――Bolt 2a1―Tightening nut 2b――Adjusting plate 2b1―Notch 3―――Fixing tool 3a――Fixing plate 3a1―Gratings locking part 3b――Bolt H―――Drainage ditch F―――Irregularity

Claims

1. A mounting portion for attaching an adjuster for adjusting the height and inclination of a grating is provided on the upper surface of a support member formed by bending a flat plate into a substantially U-shape, and a fixture for fixing the grating is provided on the upper surface of the adjuster. A grating mounting fixture characterized by this.

2. The grating mounting fixture according to claim 1, wherein the support member is provided with a mounting portion by a female support screw on the upper surface.

3. The adjuster is provided with bolts screwed into the female support screw portion, and notches having a gap with respect to the bolts are provided on both sides of a flat plate-shaped adjustment plate laid between the bolts, and a connecting female screw portion is provided in the center. The grating mounting fixture according to any one of claims 1 or 2, characterized by this.

4. The fixture is provided with a bolt screwed into the connecting female screw portion at the center of a fixing plate having a flat plate shape and provided with grating locking portions on both sides. The grating mounting fixture according to any one of claims 1, 2 or 3, characterized by this.

5. A grating installation method characterized by comprising an arrangement step of placing a state in which a support member and an adjuster are assembled on the inner bottom surface of an existing drainage groove in accordance with the length and pitch of the grating, a level adjustment step of adjusting the height and inclination of the grating so as to be on the same horizontal plane, a grating arrangement step of arranging the grating on the upper surface of the adjuster, and a fixing step of connecting and fixing the grating to the fixture.

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