JP4091471B2 - Grating structure of rainwater intake - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure capable of vertically adjusting the grating position of a rainwater intake, a sewage intake, etc. (hereinafter referred to as a rainwater intake).
[0002]
[Prior art and issues]
As shown in FIG. 4, the rainwater intake for collecting rainwater and the like on the road is provided with a grating 3 at the opening at the upper end of the intake trough 2 buried under the road surface 1. The intake trough 2 is usually constructed by dividing the lower trough 2-1, the middle trough 2-2, the upper trough 2-3, etc., and carrying them to the site, and laminating them vertically. In order to reduce the opening area of the rainwater intake, the upper ridge 2-3 has a shape that shrinks upward. Moreover, by setting it as such a shape, the ground subsidence around an opening can be suppressed.
[0003]
The grating 3 is arranged on the same plane so that there is no step with the road surface 1. This is because a pedestrian trips or hinders vehicle travel if there is a step. For this reason, when the rainwater intake is provided, care is taken to prevent the road surface 1 from sinking or floating by sufficiently rolling the road surface 1 after the water intake 2 is buried.
[0004]
Note that the grating 3 has conventionally been used in a lattice shape. However, in order to prevent pedestrian safety, for example, accidents such as a woman's high heels falling on a lattice lid and falling, a lattice-shaped lid is not always used. However, grating (3) is still used as the name of the lid. In the present invention, the grating does not necessarily mean a grid-like lid.
[0005]
By the way, when such a water intake opening construction is performed, sufficient rolling pressure is applied to the road surface 1 so that no step is formed between the road surface 1 and the grating 3. It is the actual situation that occurs. FIG. 5 illustrates a state in which the grating 3 has settled, and FIG. 6 illustrates a state in which the grating 3 is raised.
[0006]
The reason why such sedimentation or swell occurs is not due to one reason. This manifests itself as a complex consequence of several reasons, including climatic conditions, heavy traffic, and earthquakes. For example, even in places with low traffic volume, in the cold region, it appears as a result of repeated freezing and thawing in winter and freezing and thawing in early spring for several years. Even in an area where there is no possibility of ground freezing, a phenomenon in which the traffic volume is very high and the road surface 1 near the grating 3 is constantly vibrated causes subsidence and swell. It may also be difficult to investigate the conditions under the road surface, such as the effects of groundwater.
[0007]
Conventionally, no effective method has been proposed for such a problem. A backfilling method for preventing ground subsidence around a buried object has been proposed (Japanese Patent Laid-Open No. 08-199594), but this is a method for soft ground that is susceptible to the influence of groundwater. It does not solve the problem of freezing and freezing of the ground caused by freezing.
[0008]
In addition, there is a technique for preventing settling around a manhole on a winter road surface in a cold region (for example, JP 2001-303603 A). However, this is to prevent the pressure snow on the manhole cover from melting due to the difference between the temperature inside the sewage basin and the outside air temperature, and to create a step between the pressure snow surface of the surrounding general road surface. It provides a problem only for the winter season covered with snow and its solution.
[0009]
[Problems to be solved by the invention]
For this reason, even when there is ground subsidence or rise due to various reasons, conventionally, there is no appropriate countermeasure means, and the step must be left as it is. In some cases, the level difference may be eliminated within the limits of the local government budget. In that case, the height of the intake basin 2 cannot be adjusted, so the entire intake basin 2 is removed by excavation work and buried. The height of the intake trough 2 is adjusted by a method such as returning, and then the grating 3 and the road surface 1 are made uniform.
[0010]
The problem is that with such a method, only a limited number of rainwater intakes can be resolved within the limits of the local government budget. Moreover, even if such a large-scale construction is carried out to eliminate the level difference, it is basically the same as the previous structure, so there is a possibility that the ground will sink or rise again, and this will not be a radical solution. .
[0011]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to be able to quickly eliminate the step between the grating and the road surface with respect to ground subsidence and rise caused by various reasons.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the grating structure of the rainwater intake according to the present invention is provided with a mounting bracket in the vicinity of the upper end inside the rainwater intake, and a vertical adjustment bolt capable of moving up and down at an appropriate position of the mounting bracket. Arrange. The grating is moved up and down via the adjusting bolt (claim 1).
[0013]
Mounting bracket exhibits a sectional inverted L-shape inside the rainwater intake, the horizontal portion of the lower end, Ru provided with a small hole for vertically movably screwed an adjusting bolt. The mounting bracket includes an anchor portion of the appropriate shape extending substantially horizontally at its upper end, the anchor portion, buried beneath the roadbed surface layer.
[0014]
[Action]
Claim 1 makes it possible to adjust the grating up and down by arranging a mounting bracket in the vicinity of the upper end inside the rainwater intake and arranging a vertical adjustment bolt that can be moved up and down at an appropriate position of the mounting bracket. It is. Since the position of the grating can be adjusted by the vertical movement of the adjusting bolt, it is not necessary to perform a complicated and costly step elimination work such as taking out the water intake and backfilling as in the conventional case. In addition, it is easy to adjust the angle of the grating disposed on the inclined road surface.
[0015]
In the structure of the first aspect, the adjustment bolt may be structured so that it can move up and down and can support the grating at its upper end. The number and shape of the adjusting bolts, or the mounting position (arrangement position) is not limited. Since the mounting position can be set as appropriate, the shape of the mounting bracket of the adjustment bolt is not limited. For example, the adjustment bolt may be screwed in the horizontal portion of the panel so as to be movable up and down, or the adjustment bolt may be screwed in the cylindrical support portion so as to be movable up and down. Further, the portion for screwing and supporting the adjustment bolt need not be limited to the lowermost end portion of the mounting bracket.
[0016]
A structure for supporting the adjusting bolt through a mounting bracket having a cross-sectional Mengyaku L-shaped portion. Using a small hole formed in the horizontal portion of the lower end (opening) screwed support adjustment bolt. Well if there is a horizontal section which can support the adjustment bolt, the horizontal section may be a single structure of a panel may be a plurality of structures. When a structure having a plurality of sheets is used, the panels may be provided in close contact with each other or may be provided apart from each other. As a result, it is only necessary that the durability of the adjusting bolt that supports the grating and receives the load can be guaranteed over a long period of time.
[0018]
Ensuring the rigidity of the mounting bracket can also be realized, for example, by designing with an allowance for the thickness of the panel and firmly attaching it to the inner wall surface of the intake water trough. However, in order to make the structure simpler, an extended portion (anchor) extending laterally outward from the upper end (opening) of the intake basin is provided, and this extended portion (anchor) is provided on the surface of the roadbed surface layer. It is desirable to bury it underneath. Since the adjustment of the grating position can be realized by moving the adjustment bolt up and down, it is not necessary to adjust the position of the mounting bracket itself. Therefore, even if the extended anchor is fixed under the road surface, there is no problem with the vertical adjustment function of the grating. Because there is no.
[0019]
In addition, once the mounting bracket is arranged, in principle, there is no need to change (replace or replace) thereafter. However, even in the case of a change due to aging, it is not necessary to take out the entire intake tank, and only the mounting bracket and the adjustment bolt need be replaced.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 illustrates the simplest embodiment of a rainwater intake grating structure according to the present invention. Reference numeral 11 denotes an upper end opening of the intake culvert (upper culvert), 12 an open space of the intake culvert, 14 a roadbed around the rainwater intake, and 15 a grating.
[0021]
The grating 15 is moved up and down via the adjustment bolt 20. Reference numeral 30 denotes a bolt support that supports the adjustment bolt 20 by screwing. The bolt support 30 is fixed to an appropriate position of the vertical wall plate 41 of the mounting bracket 40 having a substantially L-shaped cross section. Reference numeral 16 denotes a slit plate constituting a grating of the grating 15, and 17 denotes a gap constituting the grating of the grating 15.
[0022]
The adjustment bolt 20 for moving the grating 15 up and down is desirably arranged at least in the corner of the grating 15 or in the vicinity of the corner. For example, if the grating 15 is a substantially quadrangular plane, it is arranged at its four corners (including neighboring locations). Since the shape of the grating 15 is not necessarily limited to a planar quadrangle, even when the planar shape is, for example, a triangle or a pentagon, if the grating 15 is arranged at the corner (vertex portion) or the vicinity thereof, the uniform height of the grating 15 is obtained. Adjustment and arbitrary angle adjustment on the inclined road surface can be performed. Of course, the adjustment bolts 20 may be added at appropriate places other than the corners.
[0023]
Since the adjusting bolt 20 supports the grating 15 from below in the head 21 portion, it is desirable to set the area of the upper surface of the head 21 as large as possible. Further, the adjustment bolt 20 needs to support not only the load of the grating 15 but also the load (for example, vehicle weight) applied to the grating 15, so that the leg portion 22 has a diameter as large as possible. It is desirable. This is because as the diameter of the leg portion 22 is increased, the depth of the recessed portion of the screw thread 23 can be increased, and the load resistance can be ensured to be high.
[0024]
The load of the grating 15 is also applied via the adjustment bolt 20 to the bolt support 30 that supports the adjustment bolt 20 by screwing and moves the adjustment bolt 20 up and down within an arbitrary range. For this reason, as shown in the present embodiment, when the bolt support 30 having a cylindrical appearance (tubular shape) is used, the contact area between the bolt support 30 and the vertical wall plate 41 of the mounting bracket 40 is increased, and the load It is desirable to disperse.
[0025]
Although not shown, a mounting flange having a large area may be interposed between the bolt support 30 and the vertical wall plate 41. In that case, the bolt support 30 and the mounting flange are preferably integrally formed. This is because load resistance is ensured and the volume of the bolt support 30 is reduced to reduce raw material costs as much as possible.
[0026]
The mounting bracket 40 that supports the bolt support 30 has a substantially L-shaped cross section, and a single panel having a sufficient thickness is bent at an appropriate location so as to have a vertical wall plate 41 and a horizontal blade 42. It is. The vertical wall plate 41 is in close contact with the upper end opening 11 of the intake basin (upper rod) and supports the bolt support 30, and the horizontal blade 42 is in close contact with the upper end surface of the upper end opening 11 of the intake basin (upper rod). Arrange so that. In this embodiment, the horizontal blade 42 functions as an anchor. In addition, you may provide some inclusions (elastic resin like a vibration absorber) between the attachment metal fitting 40 and the upper end opening part 11 of a water intake trough (upper gutter).
[0027]
The horizontal blade 42 is disposed in a state of being embedded under the roadbed 14. When it is assumed that a great load is applied to the grating 15, the area of the horizontal blade 42 is increased as much as possible to increase the strength of the mounting bracket 40. The horizontal blade 42 is preferably formed in a state where it surrounds its entire circumference according to the shape of the grating 15 and has a continuous unity, but it may be provided in only a necessary location. In that case, in order to improve the function of the horizontal blade 42, the distance in the left-right direction is set large to ensure the entire area of the horizontal blade 41.
[0028]
Therefore, according to such a structure, when a step is generated between the roadbed 14 and the grating 15, the adjustment bolt 20 is moved up and down by removing the grating 15 and rotating the adjustment bolt 20. Can be readjusted to an appropriate height.
[0029]
The adjustment amount depends on the length of the leg portion 22 of the adjustment bolt 20 and the distance setting between the upper surface position of the bolt support 30 and the lower end surface of the grating. The longer the leg 22 of the adjustment bolt 20 is, the more room is left in the vertical movement amount. On the other hand, as the distance between the upper surface position of the bolt support 30 and the lower end surface of the grating increases, the downward adjustment amount of the adjustment bolt 20 increases. I can do it. Usually, the grating 15 may be adjusted up and down by a width of, for example, 5 to 10 cm from the standard setting position.
[0030]
In FIG. 2, instead of the cylindrical bolt support 30, a support horizontal plate 45 protruding inside the water intake opening (12) is provided at the lower end portion of the vertical wall plate 41 of the mounting bracket 40, while A similar reinforcing plate 50 is arranged on the top, and the adjusting bolt 20 is supported using the supporting horizontal plate 45. Reference numeral 57 denotes a horizontal plate of the reinforcing plate 50 located below the horizontal blade plate 42.
[0031]
In this structure, the adjusting bolt 20 is passed through holes provided in the support horizontal plate 45 of the mounting bracket 40 and the lower horizontal plate 55 of the reinforcing plate 50, and nuts are respectively formed on the upper surface of the support horizontal plate 45 and the lower surface of the lower horizontal plate 55. 61 and 62 are arranged so that the adjustment bolt 20 capable of moving up and down can be fastened and fixed at an appropriate position. Further, a cover covering material 24 is disposed on the head 21 of the adjusting bolt 20, and a material sealing material 18 is disposed appropriately on the outer peripheral portion of the side surface of the grating 15. Since other parts are the same as the structure shown in FIG. 1, the same reference numerals are given and redundant description is omitted.
[0032]
According to this structure, since the mounting bracket 40 is bent and formed, the area and the protruding dimension of the supporting horizontal plate 45 can be freely manufactured and adjusted. Therefore, the adjustment bolt can be easily adjusted to any type of water intake. 20 can be arranged. In this case, the mounting bracket 40 having a substantially Z-shaped cross section preferably uses an easily formed aluminum plate, and the reinforcing plate 50 disposed below the mounting bracket 40 uses a metal plate having excellent bending strength, such as iron or stainless steel. I can do it.
[0033]
The nuts 61 and 62 disposed on the upper surface of the support horizontal plate 45 and the lower surface of the lower horizontal plate 55 may be screwed together so that both of them can move freely with respect to the leg portion 22 of the adjustment bolt 20. One may be fixed to the leg portion 22. When one of the nuts 61 and 62 is fixed to the leg portion 22, the upper nut 61 is preferably fixed. In general, since the deformation of the roadbed 14 is often a sinking type, there is a high need for a case in which the adjustment bolt 20 is raised. In this case, it is desirable that the lower nut 62 be freely movable with respect to the leg portion 22. Because it is.
[0034]
As the cover covering material 24 for protecting the head 21 of the adjusting bolt 20, any material may be used as long as adhesion of the grating 15 and the head 21 due to rusting can be prevented for a long time. Any material may be used for the sealing material 18 disposed on the outer periphery of the side surface of the grating 15 as long as adhesion between the grating 15 and the roadbed 14 due to rusting or the like can be prevented. Preferably, a low-cost rust-resistant material is used.
[0035]
FIG. 3 illustrates the seal structure of the side surface and back surface support portion of the grating 15 more specifically. In the structure according to this embodiment, a frame material 60 in contact with the side surface and the back surface of the grating 15 is provided, and an elastic packing 71 is disposed between the frame material 60 and the roadbed 14. The other parts are the same as the structure shown in FIG. 2 and are therefore denoted by the same reference numerals and redundant description is omitted.
[0036]
The frame material 60 prevents adhesion between the grating 15 and the roadbed 14 and adhesion between the grating 15 and the adjusting bolt 20. The frame material 60 includes a vertical wall portion 61 disposed on the outer periphery of the grating 15, and a lower portion of the vertical wall portion 61. A head cover member 65 having a substantially U-shaped cross section disposed at an appropriate location is provided, and the upper end portion 72 of the packing 71 is fitted and supported at the upper end portion of the vertical wall portion 61. Reference numeral 68 denotes a fitting support portion having an inverted U-shaped cross section formed at the upper end portion of the vertical wall portion 61, and holds the upper end portion 72 of the packing 71 at this portion. The lower end portion 74 of the packing 71 is held by a fitting support portion 69 having a substantially U-shaped cross section provided on the upper surface of the horizontal blade 42 of the mounting member 40. The fitting support portions 68 and 69 have protruding claws on their lower and upper surfaces, respectively, and prevent the fitting terminal portions (72 and 74) of the packing 71 from being detached.
[0037]
Further, an appropriate thickness reinforcing plate 78 formed of metal, for example, is provided outside the vertical wall portion 61. The reinforcing plate 78 is held using, for example, a channel portion 64 having a substantially U-shaped cross section provided so as to protrude in the vicinity of the lowermost end and the upper end of the vertical wall portion 61. The reinforcing plate 78 prevents the frame material 60 from being deformed. Although it may be arranged in an appropriate part, it is preferably provided on the entire outer periphery of the grating 15.
[0038]
The head cover member 65 covers the head 21 of the adjustment bolt 20 to prevent adhesion between the head 21 and the lower end surface of the grating 15. Reference numeral 66 denotes a reinforcing material disposed inside the head cover member 65. The reinforcing member 66 prevents the head cover member 65 formed integrally with the frame member 60 from being deformed. For example, the reinforcing member 66 is formed by bending a rust-resistant metal.
[0039]
The packing 71 may be on the outer peripheral portion of the frame member 60 so that the gap between the roadbed 14 and the frame member 60 can be sealed. It only needs to be stretchable in at least the vertical direction. Preferably, a resin (for example, rubber) is used.
[0040]
Therefore, according to such a structure, a gap generated between the outer peripheral portion of the grating 15 and the roadbed 14 is sealed, and the both are physically insulated to ensure adhesion between the grating 15 and the roadbed 14 due to aged deterioration or the like. Can be prevented.
[0041]
The stability (anchor of the mounting member 40 or the reinforcing plate 50 is obtained by extending the upper horizontal plate (42, 57) of the mounting member 40 or the reinforcing plate 50 to the outer periphery or bending the extended portion downward. As a matter of course, the performance of the
[0042]
【The invention's effect】
As described above, according to the structure of the present invention, it is possible to quickly eliminate the step between the grating and the road surface against the ground subsidence and rise caused by various reasons.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a grating structure according to a first embodiment.
FIG. 2 is a diagram illustrating a grating structure according to a second embodiment.
FIG. 3 is a diagram illustrating a grating structure according to a third embodiment.
FIG. 4 is a diagram illustrating a general rainwater intake.
FIG. 5 is a diagram exemplifying sedimentation at a rainwater intake seen in the prior art.
FIG. 6 is a diagram exemplifying the rise of a rainwater intake seen in the prior art.
[Explanation of symbols]
11 Upper end opening 12 of intake water (upper shaft) Opening space 14 Subbase 15 Grating 16 Slit plate 17 Gap 18 Sealing material 20 Adjustment bolt 21 Head 22 Leg 24 Cover covering material 30 Bolt support 40 Mounting bracket 41 Vertical wall plate 42 Horizontal blade 45 Support horizontal plate 50 Reinforcement plate 55 Lower horizontal plate 61, 62 of reinforcement plate 60 Nut 60 Frame member 61 Vertical wall portion 64 Channel portion 65 Head cover material 66 Reinforcement material 68, 69 Fitting support portion 71 Packing 72 Upper end of packing Part 74 Lower end part 78 of packing Reinforcing plate

Claims (1)

While arranging the mounting bracket near the upper end inside the rainwater intake,
Arrange vertical adjustment bolts that can move up and down at appropriate locations on this mounting bracket,
A grating structure of a water intake that moves the grating up and down via the adjustment bolt ,
Frame material in contact with the side and back of the grating is provided, and elastic packing is placed between the frame material and the roadbed.
The frame material includes a vertical wall portion disposed on the outer peripheral portion of the grating, and a head cover material having a substantially U-shaped cross section disposed at an appropriate position below the vertical wall portion,
While the head cover material covers the adjustment bolt head,
The mounting bracket is
The inside of the rainwater intake has an inverted L-shaped cross section, and has a small hole in the lower horizontal portion that allows the adjustment bolt to be screwed up and down.
A grating structure for a rainwater intake , comprising an anchor portion of an appropriate shape extending in a substantially horizontal direction at an upper end portion thereof, wherein the anchor portion is embedded under a roadbed surface layer .

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