JP4099339B2 - Grating - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grating in which a main member and a transverse member are formed in a lattice shape in an outer frame, and in particular, a cross-section U such as a side groove or a transverse groove provided for draining rainwater on a road or a sidewalk. The present invention relates to a grating installed as a lid in a letter-shaped groove (hereinafter referred to as a U-shaped groove).
[0002]
[Prior art]
On roads and sidewalks, U-shaped grooves such as side grooves and transverse grooves are usually provided to drain rainwater. The U-shaped groove includes a lid made of concrete or iron plate as a lid, but in recent years there are many openings and good drainage, and the U-shaped groove is clogged with dust. Grating with the advantage that it can be easily confirmed is often used. Grating is usually configured by forming a main member and transverse members in a grid pattern in the outer frame, and in the grating using angle steel for the end plate of the outer frame, the flange portion of the angle steel is formed on the upper edge of the U-shaped groove. In the grating using the flat steel for the end plate of the outer frame, it is dropped into the receiving part formed on the upper edge of the U-shaped groove and attached to be openable and closable.
[0003]
[Problems to be solved by the invention]
By the way, in the case of the U-shaped groove on which the grating is placed and mounted, the upper edge of the U-shaped groove to be placed usually remains concrete, and there is a considerable amount of space between the grating and the U-shaped groove. Because there is a gap, cars such as bicycles and automobiles may run on the grating, and even if people pass, they may emit a rattling sound or a rattling sound, especially in residential areas. In addition, there is a concern about the jump. In order to prevent the generation of noise, there are some with noise prevention materials such as rubber attached to the gap, but the durability is poor and the maintenance work such as replacement is difficult.
[0004]
Also, in the case of a U-shaped groove provided by dropping the grating, the receiving part is usually in the form of concrete, or an angle steel is attached to the concrete via an anchor, and between the grating and the receiving part. Since there is a considerable gap, as in the case of the grating mounted on the upper edge of the U-shaped groove, a vehicle such as a bicycle or a car runs on the grating of the U-shaped groove or a person passes. However, it may make a rattling sound, especially in residential areas, and this sound is a problem for the ears, and there is also a fear of jumping up. On the other hand, it is possible to improve this and drop the grating into the receiving part and fix it with anchor bolts and nuts. However, in this case, it can be firmly fixed and no sound is generated, but dust etc. are removed. In some cases, it takes time to open and close, resulting in poor workability.
[0005]
The present invention, which was without in order to solve the above-mentioned problems, and its object is, without causing so much trouble to work to remove the dust, rattling the running of such 且 one car, of sound, such as Japan Mini The present invention provides a grating that can be prevented from occurring and also prevented from jumping up, and that can be suitably applied particularly to a road in a residential area.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the grating according to claim 1 of the present invention is a grating in which a main member and a lateral member are formed in a lattice shape in an outer frame, and a bottom outer frame between parallel main members. An auxiliary member provided close to the through hole in the vertical direction, a rotation shaft rotatably provided in the through hole of the auxiliary member, and a horseshoe shape provided at the bottom end of the rotation shaft Any one end of the arc part is formed thick, and the part extending from the other end to the thick part is formed in a gradient, and the rotation shaft is eccentrically attached to the anti-arc part side. And a tightening plate.
[0007]
In the above configuration, the grating is provided with a horseshoe shape so as to be rotatable through a rotation shaft, and one end of the arc portion is formed thick, and the space from the other end to the thick wall is formed. A clamping plate that is formed in a gradient and is attached with the rotating shaft eccentrically located on the side opposite to the arcuate portion is rotated, for example, into a cavity formed under the bottom of the U-shaped groove receiving portion. Thus, the bottom plate portion formed between the bottom of the receiving portion and the cavity can be sandwiched between the fastening plate and the lower surface of the main member of the grating. Thus when clamped to the bottom plate portion of the receiving portion of the U-shaped groove by a clamping plate, without rattling between the grating as long as tightening this is not released and receiving, rattling in the running of cars In addition, it is possible to prevent the sound such as rattling, and to prevent the grating from floating up or coming off from the receiving portion. Further, the tightening can be easily released by rotating the rotating shaft, and the work of removing dust and the like can be performed without any trouble. In addition, it is expected to be applied especially to roads in residential areas because it prevents noise, prevents splashing, and is easy to clean.
[0008]
The bottom plate portion to which the receiving portion of the U-shaped groove is sandwiched may be provided by forming a cavity in advance when manufacturing the concrete U-shaped groove, or the concrete U-shaped groove. It may be provided by forming a cavity by scraping after manufacturing. Moreover, it can replace with forming the said cavity and can also provide a baseplate part protruded inside a groove | channel on the bottom of the receiving part corresponding to a clamping board.
[0009]
Moreover, in the said grating, you may form in the shape which the edge part by the side of the anti-clamping plate of a rotating shaft can engage with a rotation tool (Claim 2). Various means can be configured as means for attaching the rotating shaft to the through-hole of the auxiliary member. For example, the rotating shaft is a shaft member (may be a bolt) formed with a screw at one end, and its multiple ends (bolt A structure in which a fastening plate is welded and fixed to the head side) is inserted through the screw side from the bottom side of the through hole, and a nut is attached to the screw so that it can be rotated, or the tip of the screw part is square The bolt formed in the above is inserted into the through hole from above, and the rectangular portion is fitted into the rectangular hole of the clamping plate and then welded and fixed on the bottom surface side of the clamping plate. Regardless of the configuration, for rotation of the rotation shaft, a nut on the upper portion of the rotation shaft protruding above the auxiliary member or a box wrench at the tip of the rotation tool inserted from the top of the bolt is engaged. Will rotate. At this time, in the case of a nut, it is necessary to prevent rotation, but in addition to the rotation stop, the nut also plays a role of preventing the rotation shaft from coming off from the through hole. When a member having only a role is provided, a spanner hook, a groove, or the like that engages with the rotation tool is formed on the upper portion of the rotation shaft protruding above the member.
[0010]
Further, in the grating, it is preferable that the structure including the auxiliary member, the rotation shaft, and the clamping plate is provided at least one place on each of the left and right sides (Claim 3). As long as the tightening plate is not released, the grating does not rattle with the U-shaped groove receiving portion, and a sound such as rattling or rattling may occur when the vehicle is running. The effects such as prevention can be obtained more effectively.
[0011]
The shape of the clamping plate, horses hooves type (such as a shape partially cut out of the disc) are preferred, because, rotation of the clamping portion to become thick portion during tightening, and clamping upon release This is because any rotation from the thick wall portion can be performed relatively smoothly using the gradient. In addition to the linear slope, the sloped portion may be formed in several steps with a relatively long depth on the thick wall side, and then formed into a slope. In this case, the tightening work can be performed in a stepwise manner. It becomes easy to do.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a grating according to the present invention, in which a is a front view, b is an AA cross-sectional view of a, c is a BB cross-sectional view of a, and FIG. FIG. 3 is an enlarged explanatory view, and FIG. 3 is a cross-sectional view taken along the line CC of FIG. In the figure, 1 is a grating, and 2 is a U-shaped groove. In the following description, front and rear refer to the front as viewed from the front, lower as the rear, and left and right refer to the drawing.
[0013]
The grating 1 includes a main member 3 made of flat steel arranged at a predetermined interval in the width direction up and down, welded and fixed as flat plates as end plates 4 at both ends in the longitudinal direction, and further crossed over the main member 3 to screw The horizontal members 5 made of bars are arranged at predetermined intervals like the main member 3 and are manufactured by pressing the horizontal members 5 between the main members 3 by projection welding so as to be flush with each other. is there. The front and rear end plates 4 and the main members 3 at the left and right ends constitute an outer frame.
[0014]
On the bottom side near the front and rear end plates 4 between the main members 3, 3 near the center of the grating 1, there is a flat having a through hole 6 in the vertical direction at a position substantially corresponding to the center between the main members 3, 3. Steel auxiliary members 7 and 7 are fixed by welding. A rotating shaft 11 having a fastening plate 8 welded and fixed at one end and a screw portion 9 and a spanner hook 10 formed at the other end is inserted into the through-hole 6 of the auxiliary member 7 from the bottom side. A nut 12 is fastened to the screw portion 9 so as to be rotatable. After the nut 12 is attached, the nut 12 is stopped by spot welding, not shown, or by a rotation stop pin. The rotation stop position can be clamped by sandwiching a bottom plate portion 20 (or 24) formed on the bottom of the receiving portion 18 of the U-shaped groove 2 described later between the lower surface of the auxiliary member 7 and the upper surface of the clamping plate 8. Position.
[0015]
Reference numeral 13 is a washer, and this washer 13 is provided so that it is more familiar than the nut 12 and can be easily rotated when the rotation shaft 11 is rotated. If there is, it becomes easier to tighten, and at the same time, it can be tightened by elastic force. Further, the shape of the spanner hook 10 of the rotating shaft 11 is not particularly limited, but a polygonal groove such as a hexagonal cross section corresponding to a box wrench generally used as a rotating tool. Alternatively, a protrusion shape is preferable.
[0016]
As shown in FIG. 4, the fastening plate 8 has a horseshoe shape in this example, and the edge portion of the arc portion 14 on the upper surface on the side where the rotating shaft 11 is attached is located on the one end portion 15 </ b> A side of the arc portion 14. It is formed so as to have a thick gradient and a thin wall between the other end 15B. And the rotating shaft 11 is eccentrically attached to the linear part (anti-arc part) 17 side. In addition to the said form, various forms can be assumed for the clamping board 8. FIG. For example, the central portion of the arc portion 14 may be formed to be the thickest, and both sides may be formed to have a thin gradient 16 with the thick wall as a boundary, or the gradient 16 may be a simple linear gradient. Instead, as shown in FIG. 4c, the thick wall side may be formed to have a linear gradient after it is formed in several steps having a relatively long depth. Further, the clamping plate 8 may be a circular plate or an oval having a gradient on one side, or a horseshoe shape as shown in FIG. It may be what you did. In this case, the thick part which becomes the tightening part is formed on a flat surface.
[0017]
The U-shaped groove 2 to which the grating 1 having the above-described structure is attached has a L-shaped cross section on the upper edge of the U-shaped groove 2 for attaching the grating 1 as shown by a two-dot chain line in FIGS. A portion 18 is provided. Although this receiving part 18 may remain as concrete, in this example, the angle steel 19 is attached along the receiving part 18 via an anchor (not shown). Then, a shallow bottom U-shaped cavity forming member 21 is welded and fixed to the bottom surface of the bottom plate portion 20 of the angle steel 19 at a position corresponding to the auxiliary member 7 of the grating 1. A cavity 22 is formed between the bottom of the member 21. Note that the cavity forming member 21 may be, for example, a single, square tube with a flat cross section, in addition to a U-shaped member having a shallow bottom section.
[0018]
The grating 1 according to the present invention having the above-described configuration is attached to the L-shaped receiving portion 18 (an angle steel 19) formed in the upper edge of the U-shaped groove 2 in the following manner so as to be opened and closed. used. That is, the central portion of the arc portion 14 of the fastening plate 8 provided in the grating 1 is directed inward, and in this state, it is dropped into the angle steel 19 of the U-shaped groove 2. Next, the box wrench at the tip of a rotation tool (not shown) is engaged with the spanner hook 10 of the rotation shaft 11 and rotated from one end 15B to the other end 15A. By this rotation, the thick-walled end 15A of the arc portion 14 of the clamping plate 8 enters the cavity 22 in the bottom surface of the bottom plate portion 20 of the angle steel 19, and the clamping plate 8 and the auxiliary member 7 or the main member 3 The bottom plate portion 20 of the angle steel 19 is sandwiched between the lower surface and tightened.
[0019]
In the state where the grating 1 is installed in the U-shaped groove 2 as described above, the clamping plate 8 clamps the bottom plate portion 20 of the angle steel 19 between the auxiliary member 7 or the lower surface of the main member 3 and tightens it. As long as the tightening by the tightening plate 8 is not released, the grating 1 does not rattle with the angle steel 19 of the U-shaped groove 2 and it is possible to prevent the rattling and rattling noises from being generated when the vehicle is running. At the same time, it is possible to prevent the grating 1 from being lifted or detached from the U-shaped groove 2.
[0020]
Further, when the grating 1 is opened, it can be opened by rotating the rotation shaft 11 from the end portion 15A to the end portion 15B using a rotation tool and releasing the tightening of the tightening plate 8. In this way, the tightening by the tightening plate 8 can be easily released, so that the operation of removing dust and the like can be performed without any trouble.
[0021]
In the above example, the structure including the auxiliary member 7, the rotating shaft 11, and the clamping plate 8 is provided at one location before and after the grating 1. However, the present invention is not limited to this. , Two on one side and one or two on the other.
[0022]
In the above example, the case where the angle steel 19 is provided along the receiving portion 18 of the U-shaped groove 2 has been described as an example, but when the angle steel 19 is not provided, as shown in FIG. In the U-shaped groove 2, a cavity 23 is formed in the groove wall below the bottom of the receiving portion 18 corresponding to the auxiliary member 7 of the grating 1 in advance, and a bottom plate portion 24 formed between the cavity 23 and the receiving portion 18. However, the bottom plate 24 can be clamped between the clamping plate 8 and the lower surface of the main member 3 of the grating 1. The bottom plate portion 24 may be provided by forming a cavity 23 in advance when the concrete U-shaped groove 2 is manufactured, or may be scraped after the concrete U-shaped groove 2 is manufactured to form the cavity 23. You may make it provide. In this case, if the bottom surface of the receiving portion 18 and the upper surface in the cavity 23 are still concrete, they may collapse when the clamping plate 8 is tightened. In addition, for example, a single rectangular tube with a flat cross section may be inserted into the cavity 23 and attached.
[0023]
Further, in the above example, the flat plate is used as the end plate 4 constituting the outer frame, and the grating 1 in the form of being used by being dropped into the receiving portion 18 formed on the upper edge of the U-shaped groove 2 will be described as an example. However, as shown in FIG. 6, angled steel may be used as the end plate 4, and the other configuration may be the grating 25 having the same configuration as the grating 1 of the above example.
[0024]
In the case of the grating 25, as shown by a two-dot chain line in FIG. 6, the end plate is not provided on the upper surface 26 of the upper edge of the U-shaped groove 2 without the L-shaped receiving portion 18 provided at the upper edge. No. 4 angle steel flange portion 27 is placed and installed in the same manner as the grating 1 described above. That is, a cavity 28 is formed in the groove wall of the U-shaped groove 2 corresponding to the auxiliary member 7 of the grating 25, and the bottom plate portion 29 formed between the cavity 28 and the upper surface 26 of the upper edge is connected to the clamping plate 8. It is sandwiched between the lower surface of the main member 3 of the grating 25 and installed.
[0025]
【The invention's effect】
As described above, according to the grating according to the present invention, since the grating does not rattle with the receiving portion of the U-shaped groove unless the clamping by the clamping plate is released, Generation of such sounds can be prevented. At the same time, thereby grating material is or lifted from the receiving portion of the U-shaped grooves, also preventing possible to come off. Further, since the grating can be opened by rotating the rotation shaft and releasing the tightening of the tightening plate, the operation of removing dust and the like from the U-shaped groove can be performed without any trouble. In this way, noise and splash can be prevented and cleaning is easy, so that it can be suitably applied particularly to residential roads.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a grating according to the present invention, in which a is a front view, b is an AA cross-sectional view of a, and c is a BB cross-sectional view of a.
FIG. 2 is an enlarged explanatory view of a portion X in FIG. 1;
FIG. 3 is a cross-sectional view taken along the line CC of FIG.
FIGS. 4A and 4B are explanatory diagrams of a fastening plate according to the present invention, in which a is a front view and b is a cross-sectional view taken along line DD of a. FIG.
FIG. 5 is a partial cross-sectional explanatory view of another form of the U-shaped groove according to the present invention.
6A and 6B are explanatory diagrams of grating according to another embodiment of the present invention, in which a is a front view and b is an EE cross-sectional view of a.
[Explanation of symbols]
1: Grating 2: U-shaped groove 3: Main member 4: End plate 5: Horizontal member 6: Through hole 7: Auxiliary member 8: Tightening plate 9: Screw portion 10: Spanner hook 11: Rotating shaft 12: Nut 13 : Washer 14: Arc part 15A, 15B: End part 16: Gradient 17: Straight part 18: Receiving part 19: Angle steel 20: Bottom plate part 21: Cavity forming member 22, 23: Cavity 24: Bottom plate part 25: Grating 26: Upper surface 27: Flange portion 28: Cavity 29: Bottom plate portion

Claims (3)

In the grating in which the main member and the transverse member are formed in a lattice shape in the outer frame, the auxiliary member provided near the bottom outer frame between the parallel main members and having a through hole in the vertical direction, and the penetration of the auxiliary member A pivot shaft provided rotatably in the hole and a horseshoe shape provided at the bottom end of the pivot shaft, and one end of the arc portion is formed thick, and the other end Grating characterized by comprising a clamping plate formed with a gradient between the part and its thick wall and having a rotating shaft eccentrically attached to the anti-arc part side .   The grating according to claim 1, wherein an end of the rotating shaft on the side opposite to the tightening plate is formed in a shape that can engage with a rotating tool.   The grating according to claim 1 or 2, wherein the structure comprising the auxiliary member, the rotating shaft, and the clamping plate is provided in at least one place on the left and right.

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