JP4008856B2 - Grating equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grating that is installed as a lid on an upper surface opening of a drainage groove such as a U-shaped groove or a circular waterway provided along a road, for example.
[0002]
[Prior art]
Conventionally, in a drainage groove installed along a road, a receiving frame having a width approximately equal to the opening on the upper surface is attached to the opening, and a grating as a lid is stored inside the receiving frame to store the drainage groove. The opening is covered.
[0003]
However, in this case, there is a problem that the width of the grating is large and the appearance is not so good. Therefore, in recent years, a receiving frame having a relatively small width is installed upright on the opening of the drainage groove. The form which accommodates the grating | lattice with a small width | variety inside, and covers the opening part of a drainage groove has come to be taken.
[0004]
[Problems to be solved by the invention]
Thus, the appearance is improved by using a narrow grating as a cover for the drainage groove. However, if the width of the grating is small, its weight becomes light. For this reason, when a pedestrian or a car tire touches the grating, the impact may cause the grating to vibrate greatly or jump up.
[0005]
As a countermeasure, it is conceivable that fasteners are attached to a plurality of locations on the surface of the grating, and the grating is fastened to the receiving frame with these fasteners to prevent vibration and jumping. However, if a plurality of fasteners are attached to the surface of the grating, If it becomes, an unnatural fastener will stand out visually and an external appearance will worsen.
[0006]
Therefore, it is conceivable to provide a fastener on the lower side of the grating so that the fastener is not exposed on the surface side of the grating. In this case, the fastener composed of a bolt or the like is disposed so as to protrude toward the lower side of the grating, and is tightened with a tool such as a screwdriver inserted from the surface of the grating.
[0007]
However, if the fastener protrudes toward the lower side of the grating, when the grating is transported to the construction site, the protruding fastener becomes a hindrance in handling and the work efficiency is lowered. In addition, there is a risk that an operator may be injured by contacting the protruding fastener.
[0008]
The present invention has been made paying attention to such points, and the purpose of the invention is a grating that can easily and efficiently carry out operations such as transportation without being hindered by fasteners and can be handled safely. Is to provide.
[0009]
[Means for Solving the Problems]
The grating of the present invention is provided in a receiving frame provided in the upper part of the drainage groove and covers the opening in the upper part of the drainage groove, and provided on the lower surface of the grating main body. Fixing fasteners.
[0010]
The fastener includes a bolt and a fixing member that is screwed to the bolt and moves in the axial direction by rotation of the bolt, and the bolt projects from the lower surface of the grating main body downward at a substantially right angle to the bolt. It is provided so as to be movable in a folded state along the lower surface of the grating main body, and when the grating main body is stored in the receiving frame, the bolt is moved from the folded state to a state projecting substantially perpendicularly from the lower surface of the grating. Then, the bolt is rotated in one direction, the fixing member is moved in the axial direction of the bolt, and the grating main body is fastened and fixed to the receiving frame.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
FIG. 1 shows a U-shaped groove 1 constituting a drainage groove. The U-shaped groove 1 is buried in the ground, and a receiving frame 3 is attached to the upper portion of the U-shaped groove 1 via a bracket 2. Yes.
[0013]
As shown in FIGS. 1 to 3, the receiving frame 3 has a pair of frame members 4 facing each other in parallel, and these frame members 4 have an L-shaped cross section composed of a base portion 5 and a side wall portion 6. Each base part 5 is attached to the upper end surfaces on both sides of the U-shaped groove 1, and each side wall part 6 stands above the U-shaped groove 1 and faces each other. It is smaller than the width of the opening. And the finishing material 7 which comprises a road surface is spread | laid in the outer side of each side wall part 6 so that it may become substantially flush with the joint of the upper end of the side wall part 6. FIG.
[0014]
Receiving materials 8 extending along the longitudinal direction are attached to the inner surfaces of the side wall portions 6 so as to face each other at substantially the middle portion in the vertical direction. A grating 10 is accommodated between the side wall portions 6, and the grating 10 is supported horizontally via the receiving material 8. The grating 10 covers the opening at the upper end of the U-shaped groove 1.
[0015]
The grating 10 includes a grating main body 13 including a plurality of main bars 11 extending in parallel in one direction and a plurality of cross bars 12 inserted between the main bars 11. A plurality of support members 14 are attached to the lower surface of the substrate by welding or the like.
[0016]
Each support member 14 has, for example, a cylindrical shape with a rectangular cross section, is arranged at a constant pitch along the longitudinal direction of the grating body 13, and is attached to the lower surface of the grating body 13 so as to extend along the width direction of the grating body 13. It has been. Then, both end portions of each support member 14 are placed on the receiving material 8 of the side wall portion 6 in the receiving frame 3, whereby the grating 10 is horizontally supported in the receiving frame 3.
[0017]
Fasteners 16 are respectively provided at both end portions of the lower surface of the grating body 13, and the fasteners 16 include a holding member 17 and bolts 18 supported by the holding member 17, as shown in FIGS. 4 to 7. And a fixing member 19 attached to the bolt 18.
[0018]
FIG. 4A is a perspective view showing an attachment structure of the fastener 16 to the grating main body 13, and FIG. 4B is a perspective view showing the fastener 16 in a single state. The holding member 17 of the fastener 16 has an L-shaped cross section having a horizontal piece 22 and a vertical piece 23, and the horizontal piece 22 is attached to the lower surface of the support member 14 provided at the end of the grating body 13 by welding or the like. The vertical piece 23 is disposed so as to stand facing the side surface of the support member 14.
[0019]
The holding member 17 is formed with a notch groove 26 extending from the horizontal piece 22 to the vertical piece 23, and the bolt 18 is inserted into the notch groove 26. The bolt 18 has a head portion 18 a disposed inside the holding member 17, and a shaft portion 18 b protruding outside the holding member 17 through the notch groove 26.
[0020]
The fixing member 19 is attached to the shaft portion 18 b of the bolt 18 protruding outside the holding member 17. As shown in FIG. 7, the fixing member 19 is a parallelogram having an oblique plane shape, and the dimension in the length direction is slightly longer than the width between the opposing side walls 6 of the receiving frame 3.
[0021]
A circular hole 19a is formed in an intermediate portion of the fixing member 19, and a nut 28 is fixed to the lower surface by welding or the like corresponding to the circular hole 19a. The shaft 18b of the bolt 18 is inserted into the circular hole 19a and the nut 28. A nut 29 for preventing the fixing member 19 from being detached is fixed to the tip of the shaft portion 18a by welding or the like. Further, 30 shown in FIG. 5 is a flat washer, and 31 is a spring washer.
[0022]
As shown in FIG. 4B, a concave notch 32 is formed at the side of the vertical piece 23 on the side edge of the notch groove 26 in the holding member 17, and the upper side of the notch 32 can be bent. Part 33 is formed.
[0023]
The shaft portion 18 b of the bolt 18 can move along the notch groove 26 of the holding member 17. Prior to installation of the grating 10 on the receiving frame 3, for example, at the time of shipment, as shown in FIGS. 4B and 5A, the shaft portion 18b of the bolt 18 is moved along the notch portion 26, and the bolt 18 is directed along the lower surface of the grating main body 13, the shaft portion 18 b is press-fitted into the recess portion 32, and the claw portion 32 is bent with a tool to lock the shaft portion 18 b in the recess portion 32. Further, the tip end portion of the shaft portion 18b is stuck to the lower surface of the grating main body 13 using an adhesive stopper member 34 such as a gum tape.
[0024]
As a result, the bolt 18 is held in a folded state in which the bolt 18 is disposed substantially parallel and adjacent to the lower surface of the grating body 13. Such processing is performed on the bolts 18 of the fasteners 16 at both ends of the grating body 13.
[0025]
In this way, the grating 10 is shipped with the bolts 18 of the respective fasteners 16 folded and transported to the construction site. At this time, the bolts 18 of the respective fasteners 16 are folded along the lower surface of the grating main body 13 so as not to protrude downward, so that the bolts 18 do not get in the way when the grating 10 is conveyed. As a result, it is possible to stack a large number efficiently, and to handle them easily and efficiently at the time of transportation. Further, since the bolts 18 do not protrude, they can be handled safely.
[0026]
After carrying the grating 10 into the construction site, the adhesive stop member 34 is peeled off, and the claw portion 33 is bent with a tool to remove the shaft portion 18b of the bolt 18 from the recessed portion 32.
[0027]
Then, as shown in FIG. 5B, the shaft portion 18 b of the bolt 18 is moved along the notch groove 26 of the holding member 17, and the shaft portion 18 b is suspended below the grating body 13 together with the fixing member 19. This operation is performed on the bolts 18 of the fasteners 16 provided at both ends of the grating body 13.
[0028]
Next, as shown in FIG. 6, the grating 10 is inserted into the inside of the receiving frame 3 from above, that is, between the pair of side wall portions 6, and both ends of each support member 14 on the lower surface of the grating 10 are applied to the receiving material 8. Is supported horizontally. At this time, the fixing member 19 attached to the shaft portion 18b of each bolt 18 is directed in the direction along the longitudinal direction of the grating body 13 as shown by a chain line in FIG. The fixing member 19 is passed between the receiving members 8 and disposed below the receiving member 8.
[0029]
Next, a tool such as a screwdriver is inserted below the grating 10 from the surface side, and the bolt 18 is rotated clockwise with this tool. When the bolt 18 is rotated in the clockwise direction, the fixing member 19 also rotates in the clockwise direction integrally with the bolt 18, and as shown by a solid line in FIG. 7, both end edges of the fixing member 19 abut against the side wall portion 6. Thus, the rotation of the fixing member 19 stops.
[0030]
Since the bolt 18 is screwed into the nut 28 attached to the fixing member 19, when the bolt 18 is further rotated, the fixing member 19 moves upward together with the nut 28, and both ends of the fixing member 19 are shown by a chain line in FIG. The portion comes into contact with the lower surface of the receiving material 8. Further, by further tightening the bolts 18, the fixing member 19 is crimped to the receiving material 8, the support member 14 of the grating main body 13 is crimped to the receiving material 8, and the grating 10 is firmly fixed to the receiving frame 3.
[0031]
In this way, it is possible to firmly fix the grating 10 to the receiving frame 3 by tightening the bolts 18 of the fasteners 16 at both ends of the grating body 13, thereby reliably preventing the grating 10 from vibrating and jumping up. be able to.
[0032]
And since the fastener 16 is provided in the lower surface of the grating main body 13, and is not exposed to the surface, the surface of the grating 10 can be kept clean and can maintain a favorable external appearance.
[0033]
Although the said embodiment is an example in the case of installing grating in the drain groove by a U-shaped groove, as shown in FIG. 8 (A), in the case of the grating 10 installed in the circular water channel 1a, or in FIG. 8 (B). As shown, the present invention can be similarly applied to the grating 10 installed in the drainage groove 1b by on-site construction.
[0034]
【The invention's effect】
As described above, according to the present invention, when shipping the grating, the bolt of the fastener can be folded along the lower surface of the grating main body, and therefore, the bolt of the fastener is not hindered. Handling such as the conveyance of the grating can be easily and efficiently performed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an installed state of a grating showing an embodiment of the present invention.
FIG. 2 is a plan view of an installation state of the grating.
FIG. 3 is a cross-sectional view of the grating installed state.
FIG. 4 is a perspective view showing the structure of the main part of the grating.
FIG. 5 is a side view showing the grating fastener.
6 is a front view seen from the direction of arrow F in FIG. 4;
FIG. 7 is a plan view of a bolt and a fixing member of a fastener in the grating as viewed from above.
FIG. 8 is a cross-sectional view showing another example of the drainage groove in which the grating is installed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... U-shaped groove 3 ... Receiving frame 6 ... Side wall part 8 ... Receiving material 10 ... Grating 13 ... Grating main body 14 ... Support member 16 ... Fastener 17 ... Holding member 18 ... Bolt 19 ... Fixing member 26 ... Notch groove 32 ... Notch Part 33 ... Claw part

Claims (2)

A grating main body that is housed in a receiving frame provided at the upper portion of the drainage groove and covers an opening at the upper portion of the drainage groove, and a fastener that is provided on the lower surface of the grating main body and fixes the grating main body to the receiving frame. Equipped,
The fastener includes a bolt and a fixing member that is screwed to the bolt and moves in the axial direction by rotation of the bolt, and the bolt projects from the lower surface of the grating main body downward at a substantially right angle to the bolt. It is provided so as to be movable in a folded state along the lower surface of the grating main body, and when the grating main body is stored in the receiving frame, the bolt is moved from the folded state to a state projecting substantially perpendicularly from the lower surface of the grating. Then, the bolt is rotated in one direction, the fixing member is moved in the axial direction of the bolt, and the grating main body is fastened and fixed to the receiving frame. The grating according to claim 1, wherein the fastener includes holding means for holding the bolt in a folded state along a lower surface of the grating main body.

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