JPH1077680A - Gutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a gutter capable of reducing noises caused by shaking of the gutter cover without incurring the decline of durability. SOLUTION: A gutter cover 3 is formed of a steel grating 4 having side bars 7 on both right and left ends in the direction of the width of a gutter. Then, a pipe-like leg section 8 is fixed to the lower surfaces of both right and left ends in the vertical direction. The leg section 8 is equipped with a horizontal piece 9 having specific width, a vertical piece 10 bent and formed vertically and downward from the inside in the direction of the width of the gutter in the horizontal piece 9 so as to intersect at an approximately right angle to the horizontal piece 9 and a curve section 11 from the outside end of the horizontal piece 9 to the lower end of the vertical piece 10. A straight line section 12 making a vertical section in the direction of the width of the gutter as a straight line so as to correspond to the side 7a of each of the side bars 7, a curve holding section 13 continuously formed downward of the straight line section 12 so as to parallel the curve section 11 of the leg section 8 and a channel section 14 formed downward of the curve holding section 13 are provided to the gutter section 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side groove provided with a groove lid in a groove portion.

[0002]

2. Description of the Related Art In a gutter provided on a road or the like, a groove lid made of concrete and a groove lid made of steel grating may be juxtaposed at an upper opening of the groove.
In this case, the height of the upper surface of the steel groove lid is adjusted to the height of the upper surface of the relatively thick concrete groove lid. The one provided with a raising leg portion having the height dimension described above is used.

FIG. 10 shows a conventional example of a side groove provided with such a groove lid. As shown in the figure, a step portion 51 for mounting a groove lid having a flat upper surface is formed on an upper portion of an inner side surface extending along the groove direction in the concrete groove portion 50. Further, a groove lid 52 made of steel grating that covers an upper opening portion of the groove 50 is provided with left and right ends of a plurality of main bars 53 extending along the groove width direction, in the front-rear direction (in the figure, orthogonal to the plane of the drawing). Direction), is fixed.
Legs 55 having a rectangular cross section extending in the front-rear direction are fixed to the lower surfaces of the left and right ends of the main bar 53 by welding or the like. Then, the leg portion 55 of the groove lid 52 is mounted on the step portion 51 of the groove portion 50 so that the groove lid 52 is mounted in the state shown in the drawing, and in this state, the groove lid 52 is supported by the flat surface of the step portion 51. Has become.

[0004]

In the side groove as described above, a required planar accuracy is required in the step portion 51 formed in the groove portion 50 in order to prevent noise due to rattling of the groove lid 52. However, since the groove 50 is formed of concrete, it is difficult to obtain a required plane accuracy. For this reason, there is a problem that it is difficult to reduce noise due to rattling of the groove lid 52. In order to deal with such a problem, conventionally, the leg 5 in the groove lid 52 is used.
There is also known one in which a rubber packing or the like is provided between the lower surface of the groove 5 and the step portion 51 in the groove portion 50 to reduce noise. However, in this type, the load due to a person or a vehicle passing over the groove lid 52 repeatedly acts on the rubber packing and the like, whereby the elasticity of the rubber packing and the like is lost, so that the durability is poor. There is.

SUMMARY OF THE INVENTION An object of the present invention is to provide a side groove which has little rattling of the groove lid and has sufficient durability.
Another object of the present invention is to provide a gutter that can withstand a relatively large load. Still another object of the present invention is to provide a front-rear direction (a direction extending along the groove) when a load such as a vehicle is applied to only one of the left and right ends (both ends located in the groove width direction) of the groove lid. It is an object of the present invention to provide a side groove which can surely prevent such vertical rotation of the groove lid when the groove lid rotates vertically about the axis of the groove lid.

[0006]

In order to achieve the above-mentioned object, the present invention is characterized in that a side groove having a groove and a groove lid is constituted as follows. That is, as shown in FIGS. 1 to 4 used in the description of the embodiment of the present invention, the groove lid 3 is constituted by a steel grating 4 having side bars 7 at both ends in the left-right direction which is the groove width direction. A horizontal piece 9 of a predetermined width is provided on the lower surface of the left and right ends of the grating 4.
And a hanging piece 10 bent vertically downward from the inside of the horizontal piece 9 so as to intersect the horizontal piece 9 at a substantially right angle, and a curve from the outside end of the horizontal piece 9 to the lower end of the hanging piece 10 Part 1
1 are fixed in the front-rear direction. The groove portion 2 includes a linear portion 12 having a linear vertical cross-sectional shape in the groove width direction corresponding to a side surface 7 a of the side bar 7 on the outer side in the groove width direction, and a leg portion 8 of the groove lid 3.
A curved receiving portion 13 formed continuously below the linear portion 12 along the curved portion 11 and a water channel portion 14 formed below the curved receiving portion 13.

The cross-sectional shape of the curved portion 11 constituting the leg portion 8 may be an arc, an ellipse, or an arc-like shape forming a part of another curved line. In particular,
As shown in FIG. 4, the shape may be a substantially quarter-circle arc, as shown in FIG. 9, a shape other than a quarter circle other than a quarter circle, and further, an arc shape Instead, an arc-shaped curve shape in which the curvature continuously changes may be used. Incidentally, in the example illustrated in FIG. 4, the groove width direction dimension of the horizontal piece 9 is substantially equal to the vertical dimension of the hanging piece 10, and the center (curvature center) of the arc-shaped curve forming the cross-sectional shape of the curved portion 11 is the two pieces. Although it is located at the intersection of 9 and 10 or in the vicinity thereof, in the example illustrated in FIG. 9, the groove width direction dimension of the horizontal piece 9 and the vertical dimension of the hanging piece 10 are different, and the cross section of the curved portion 11 is different. Center of arc-shaped curve (center of curvature)
Is located at a position off the intersection of the two pieces 9 and 10.

As shown in FIGS. 5 and 8, the leg portion 8 may be provided with a reinforcing piece 16 for reinforcing the curved portion 11 in a closed section surrounded by the horizontal piece 9, the hanging piece 10, and the curved portion 11. it can. In this case, one end of the reinforcing piece 16 is fixed to the inner surface of the corner from the horizontal piece 9 to the hanging piece 10, and the other end of the reinforcing piece 16 is fixed to the inner surface of the curved portion 11. 6 and 7
As shown in the figure, the left and right legs 8 are provided on the inner side surface of the hanging piece 10 in the groove width direction so as to follow the upper part of the inner surface of the water channel portion 14 in the groove portion 2 when the groove lid 3 is attached to the groove portion 2. A detent piece 17 for preventing vertical rotation of the groove lid 3 (rotation about an axis in the front-rear direction orthogonal to the groove width direction) is preferably fixed. As shown in FIG. 8, such a detent piece 17 is provided in a side groove having a reinforcing piece 16 for reinforcing the curved part 11 in a closed cross section surrounded by the horizontal piece 9, the hanging piece 10, and the curved part 11. Needless to say, it is good.

[0009]

According to the present invention, when the groove lid 3 is mounted on the groove 2, the pipe-shaped legs 8 fixed to the lower surfaces of the left and right ends of the groove lid 3 respectively correspond to the curved portions 11. The groove 2 is fitted into the curve receiving portion 13 of the groove 2 to be in a curved surface contact state, and the groove lid 3 is supported in this state. As a result, compared with the conventional side groove (see FIG. 10) in which the groove lid is supported by the step of the groove, the rattle of the groove lid 3 attached to the groove 2 is reduced, and noise due to such rattling is reduced. Will be. In addition, since the noise due to the rattle of the groove lid 3 can be reduced without providing a rubber packing between the leg portion 8 of the groove lid 3 and the groove portion 2 receiving the same, the durability generated when the rubber packing or the like is used. Can be avoided.

In the groove lid 3 described above, a load is received by the curved portion 11 of the leg portion 8, but the lower end of the curved portion 11 has a downwardly bent downwardly bent substantially vertically from the inside of the upper horizontal piece 9. Since the lower ends of the pieces 10 are connected, this hanging piece 10
This results in a structure in which the curved portion 11 is sufficiently reinforced. In particular, when the reinforcing piece 16 is provided in a closed cross section surrounded by the horizontal piece 9, the hanging piece 10, and the curved part 11, as shown in FIG. Piece 1
Since it is reinforced not only by 0 but also by the reinforcing piece 16, it can withstand a larger load.

On the other hand, a pipe-like leg 8 in the groove lid 3
Is supported only by the curved receiving portion 13 of the groove portion 2 having a shape corresponding to the curved portion 11, when a load of a vehicle or the like acts on only one of the left and right ends of the groove lid 3, There is a possibility that the groove lid 3 rotates vertically to cause misalignment. However, since the linear portion 12 corresponding to the side surface 7a of the side bar 7 of the grating 4 is formed in the groove portion 2, when the groove lid 3 is to rotate vertically, the side surface 7a of the side bar 7 is The second linear portion 12 will be hit. Thereby, the vertical rotation of the groove lid 3 can be prevented, and the displacement due to such vertical rotation can be prevented. In particular, FIGS.
As shown in the figure, when the detent pieces 17 for preventing the vertical rotation of the groove lid 3 are fixed to the inner side surfaces of the hanging pieces 10 in the groove width direction of the right and left legs 8 respectively, the groove lid is fixed. When a load such as a person or a vehicle passing thereover acts on one of the left and right end sides of the groove 3 and the groove lid 3 is about to rotate vertically, the side surface of the side bar 7 in the groove lid 3 has a linear shape of the groove 2. In addition to the contact with the portion 12, the detent pieces 17 on either side contact the inner surface of the channel 14 of the groove 2, so that the vertical rotation of the groove lid 3 and the resulting positional displacement are more reliably prevented. be able to.

[0012]

【Example】

(First Embodiment) FIGS. 1 to 4 show a first embodiment of the present invention. The side groove 1 according to this embodiment is, as shown in FIG.
It comprises a groove 2 made of concrete and a groove lid 3 mounted on the top thereof.

The groove lid 3 has a steel grating 4 as a component thereof. As shown in FIGS. 1 to 3, the grating 4 extends in the groove width direction (the left-right direction in the state of FIG. 2) and has a plurality of plate-shaped main bars 5 arranged at regular intervals. A plurality of crossbars 6 which are crimped to the upper end side of the main bar 5 and extend in the front-rear direction (groove direction) orthogonal to the main bar 5, and a pair of plate-like side bars 7 fixed to both left and right ends of the main bar 5.
Consists of In this embodiment, the side surface 7a on the outer side in the groove width direction of each side bar 7 is an inclined surface whose lower end is located slightly inward in the groove width direction from the upper end (see FIG. 4).

On the lower surface of the left and right ends of the grating 4, leg portions 8 each having a pipe shape of approximately a quarter circle are fixed in the front-rear direction by welding or the like. As shown in an enlarged view in FIG. 4, the leg portion 8 has a horizontal piece 9 having a predetermined width fixed to the lower end of the main bar 5 and an inner side of the horizontal piece 9 intersecting the horizontal piece 9 at a substantially right angle. It comprises a hanging piece 10 that is bent vertically downward from the end, and a curved section 11 having a substantially quarter-arc cross section from the outside end of the horizontal piece 9 to the lower end of the hanging piece 10. In this case, the outer end of the horizontal piece 9 (i.e., the upper end of the curved portion 11) of the leg 8 in the illustrated example slightly protrudes outside the end of the main bar 5.

On the upper side of the groove 2, a linear portion 12 on which the groove lid 3 is mounted and a curved receiving portion 13 continuous below the linear portion 12 are formed.
4 is provided. Among these, the linear portion 12 is provided on the upper end side of the left and right inner surfaces forming the groove portion 2 and has a shape corresponding to the outer side surface 7 a of the side bar 7. Specifically, the linear portion 12 has a dimension in the depth direction that is substantially the same as that of the main bar 5 in the grating 4, and the upper end side is slightly outside the lower end side in the groove width direction. (Therefore, the vertical cross-sectional shape in the groove width direction is linear). In addition, the curve receiving portion 13
The cross-sectional shape in the groove width direction is a substantially 1/4 arc-shaped curved shape along the curved portion 11 of the leg 8. When the groove lid 3 is attached to the groove 2 as shown in FIGS. 1 and 4, the leg 8 of the groove lid 3 is received by the curved receiving portion 13 of the groove 2 in a curved surface contact state. Groove lid 3
The outer side surface 7a of the side bar 7 at both left and right ends of the groove 2 is opposed to the linear portion 12 of the groove portion 2 with a close gap or a slight gap.

In the illustrated example, a portion 15 extending from the curve receiving portion 13 to the water channel portion 14 in the groove portion 2 is slightly notched. This is because the steel groove lid 3 is made of concrete when the groove lid is attached. This is for preventing the upper end corner of the waterway portion 14 from being inadvertently brought into contact with the upper end corner portion. Further, in the groove lid 3 in the illustrated example, the outer side surface 7a of the side bar 7 is formed to be inclined inward as going downward, but the outer side surface 7a of the side bar 7 is perpendicular to the upper surface. It may be formed.

According to the above configuration, since the linear portion 12 of the concrete groove 2 is inclined downward and inward, the steel groove lid 3 is easily fitted into the groove 2 from above. Can be attached to When the groove lid 3 is mounted in this manner, the pipe-shaped leg 8 having a substantially 断面 circular cross section in the groove lid 3 is brought into curved contact with the curved receiving portion 13 of the groove 2 having a corresponding shape. Since it is received in the state and the groove lid 3 is supported in that state,
Compared to the case where a square pipe-shaped leg is received on the flat surface of the concrete groove which is difficult to obtain the required flatness accuracy during molding (in the case of a conventional side groove as shown in FIG. 10), the rattle of the groove lid 3 is larger. Is reduced. As a result, noise caused by rattling of the groove lid 3 mounted on the groove 2 is reduced. Moreover, since the noise caused by the rattle of the groove lid 3 can be reduced without providing a rubber packing between the leg portion 8 of the groove lid 3 and the groove portion 2 receiving the same, the durability generated when the rubber packing or the like is used. Can be avoided.

In the illustrated groove lid 3, the load is received by the curved portion 11 of the leg 8, and the curved portion 11
And from the inner end of the horizontal piece 9 to the lower end of a hanging piece 10 bent vertically downward from the inner end of the horizontal piece 9. Therefore, since the curved portion 11 has a structure reinforced by the hanging pieces 10, the curved portion 11 can sufficiently withstand a predetermined amount of load. Further, in this case, since the leg portion 8 is formed in a pipe having a substantially 1/4 circular cross section including a horizontal piece 9, a hanging piece 10, and a curved portion 11, a groove lid having a leg portion for raising this kind. The weight is much lighter than when the whole is made of concrete or the legs are made of solid steel. Thereby, the weight of the groove lid 3 can be reduced.

By simply supporting the pipe-shaped leg portion 8 having a substantially quarter-circular cross section by the curved receiving portion 13 of the groove portion 2 having a shape corresponding to the curved portion 11, one of the left and right ends of the groove lid 3 is provided. When only a load is applied, there is a possibility that the groove lid 3 rotates vertically around the axis in the front-rear direction and causes a positional shift. However, in the groove 2 constituting the side groove 1 of the present invention, the linear portion 12 corresponding to the outer side surface 7a of each side bar 7 at the left and right ends of the groove lid 3 is formed. When it is attempted to rotate vertically, the outer side surface 7 a of the side bar 7 hits the linear portion 12 of the groove 2. Thereby, the vertical rotation of the groove lid 3 can be prevented, and the displacement due to such vertical rotation can be prevented.

The above-mentioned groove lid 3 is manufactured by attaching a pair of left and right legs 8 to the lower surfaces of the left and right ends of the grating 4 by welding or the like. In this case, each leg 8 is attached to the grating 4 by first matching the dimension between the left and right legs with the groove width dimension of the groove 2 and then fixing the left and right legs 8 to the lower surfaces of the left and right ends of the grating 4. Can be performed. Therefore, regardless of the dimensional error of the grating 4 in the groove width direction, the right and left legs 8 can be matched to the shape of the curve receiving portion 13 of the groove 2. Thereby, the manufacture of the groove lid 3 matching the shape of the groove 2 is facilitated.

(Second Embodiment) FIG. 5 shows a second embodiment of the present invention. In this case, a pipe-shaped leg 8 fixed to the lower surface of the left and right ends of the groove lid 3 is composed of a horizontal piece 9, a hanging piece 10, and a curved part 1.
1 is the same as that of the first embodiment, except that the reinforcing piece 16 is provided in a closed section surrounded by the horizontal piece 9, the hanging piece 10, and the curved portion 11. . One end of the reinforcing piece 16 is fixed to the inner surface of the corner from the horizontal piece 9 to the hanging piece 10, and the other end is fixed to the inner surface of the curved portion 11 by welding or the like. According to this, the curved portion 11 supporting the load is not only the hanging piece 10 but also the reinforcing piece 1.
6, it can withstand a larger load than that of the first embodiment. In FIG. 5, the configuration of the portions denoted by the same reference numerals as in FIG. 4 is the same as that in the first embodiment.

(Third Embodiment) FIGS. 6 and 7 show a third embodiment of the present invention. In this example, detent pieces 17 are fixed to the legs 8 each having a substantially quarter-circular cross section and fixed to the lower surfaces of the left and right ends of the groove lid 3 by welding or the like. Each of the detent pieces 17 is provided with a leg 8 so that when the groove lid 3 is attached to the groove 2, it extends along the upper part of the inner surface of the channel 14 of the groove 2.
Are fixed to the inner side surface of the hanging piece 10 in the groove width direction by welding or the like. In the illustrated example, each of the leg portions 8 is provided in a predetermined position on the front end side and the rear end side in a pair so as to face each other. According to this, when a load of a person or a vehicle passing therethrough acts on one of the left and right end sides of the groove lid 3 and the groove lid 3 is about to rotate vertically, the side bar 7 of the groove lid 3 is rotated. Not only does the side surface hit the linear portion 12 of the groove 2,
The detent piece 17 on either side is the channel 1 of the groove 2
Since the groove 4 is in contact with the inner surface of the groove 4, the vertical rotation of the groove lid 3 and the resulting positional displacement can be more reliably prevented.

(Fourth Embodiment) FIG. 8 shows a side wall 1 as shown in the first embodiment and a reinforcing piece 1 as shown in the second embodiment.
6 and a fourth embodiment of the present invention comprising a detent piece 17 as shown in the third embodiment. That is, the gutter 1 according to the fourth embodiment includes a concrete groove 2 and
And a groove lid 3 mounted on the upper part thereof, and the groove lid 3 has a steel grating 4. The grating 4 includes a plurality of plate-shaped main bars 5 extending in the groove width direction and arranged at regular intervals;
A plurality of crossbars 6 which are crimped to the upper ends of these main bars 5 and extend in the front-rear direction (groove direction) orthogonal to the main bars 5, and a pair of plate-like side bars fixed to both left and right ends of the main bars 5 7

On the lower surface of the left and right ends of the grating 4, leg portions 8 each having a pipe shape of approximately a quarter circle are fixed in the front-rear direction by welding or the like. The leg portion 8 is formed by bending a horizontal piece 9 having a predetermined width fixed to a lower end of the main bar 5 and vertically downward from an inner end of the horizontal piece 9 so as to cross the horizontal piece 9 at a substantially right angle. It has a hanging piece 10 and a curved portion 11 having a substantially 1/4 arc shape in cross section from the outer end of the horizontal piece 9 to the lower end of the hanging piece 10. A reinforcing piece 16 is provided in a closed section formed by the horizontal piece 9, the hanging piece 10, and the curved portion 11. One end of the reinforcing piece 16 is fixed to the inner surface of the corner from the horizontal piece 9 to the hanging piece 10, and the other end is fixed to the inner surface of the curved portion 11. A detent piece 17 is provided on the inner side surface of the hanging piece 10 of each leg 8 in the groove width direction so as to be along the upper part of the inner side surface of the water channel part 14 of the groove part 2 when the groove lid 3 is attached to the groove part 2. Are respectively fixed.

On the inner surface side of the groove 2, in order from the upper side,
A linear portion 12 to which the groove lid 3 is attached;
2, a curved receiving portion 13 located below the curved receiving portion 13 and a water channel portion 14 located below the curved receiving portion 13 are formed.
Among these, the linear portion 12 has substantially the same dimension in the depth direction as that of the main bar 5 in the grating 4, and has a slope shape in which the upper end side is located slightly outside the lower end side in the groove width direction. ing. In addition, the curve receiving portion 13
The cross-sectional shape in the groove width direction is a substantially 1/4 arc-shaped cross-sectional shape along the curved portion 11 of the leg portion 8. When the groove lid 3 is attached to the groove portion 2 as shown in the figure, the groove lid 3 Can be received in a curved surface contact state. In this case as well, for the same reason as in the first embodiment, the portion 15 of the groove portion 2 from the curved portion 13 to the water channel portion 14 is slightly cut away.

According to the side grooves 1 according to the fourth embodiment, as described below, each of the side grooves 1 of the first to third embodiments will be described.
All of the benefits of First, the pipe-shaped leg portion 8 of the groove lid 3 having a substantially 断面 circular cross section is received in a curved surface contact state by the curved receiving portion 13 of the groove portion 2 having a corresponding shape, and the groove lid 3 is supported in this state. Therefore, the rattle of the groove lid 3 is reduced as compared with the case of the conventional side groove which receives the leg of the rectangular pipe on the flat surface of the concrete groove which is difficult to obtain the required flatness accuracy during molding. Thereby, noise due to rattling of the groove lid 3 attached to the groove 2 is reduced. Further, since the noise due to the rattle of the groove lid 3 can be reduced without providing a rubber packing between the leg portion 8 of the groove lid 3 and the groove portion 2 receiving the same, the durability generated when the rubber packing or the like is used. Can be avoided.

Curved portion 1 receiving a load in groove lid 3
1 is reinforced by a hanging piece 10 bent vertically downward from the end of the horizontal piece 9 and further reinforced by a reinforcing piece 16, so that it can sufficiently withstand a relatively large load. In addition, since the leg 8 is formed in a pipe having a substantially 断面 circular cross section, the weight of the groove lid 3 can be reduced.

When a load such as a person or a vehicle passing therethrough acts on one of the left and right end sides of the groove lid 3 and the groove lid 3 is about to rotate vertically, the outer side of the side bar 7 in the groove lid 3. Since not only the side surface 7a hits the linear portion 12 of the groove portion 2 but also the detent piece 17 on one of the right and left sides abuts on the inner surface of the water channel portion 14 of the groove portion 2, the vertical rotation of the groove lid 3
As a result, it is possible to more reliably prevent the displacement caused by the displacement.

The groove lid 3 is manufactured by attaching a pair of left and right legs 8 to the lower surface of the left and right ends of the grating 4 by welding or the like. At this time, each leg 8 is attached to the grating 4 first. The dimension between the left and right legs is adjusted to the groove width dimension of the groove 2, and the left and right legs 8 are grating 4 in that state.
By fixing them to the lower surfaces of the left and right ends of the sheet.
Therefore, regardless of the dimensional error of the grating 4 in the groove width direction, the left and right legs 8 can be matched to the shape of the curve receiving portion 13 of the groove 2, and the groove lid 3 matching the shape of the groove 2 can be easily formed. Can be manufactured.

(Fifth Embodiment) In the first to fourth embodiments described above, the horizontal dimension of the horizontal piece 9 of the pipe-like leg 8 is substantially equal to the vertical dimension of the hanging piece 10. Therefore, the cross-sectional shape of the curved portion 11 in the groove width direction is substantially a quarter-arc shape, and the position of the center of curvature of the arc-shaped curve substantially coincides with the intersection of the horizontal piece 9 and the hanging piece 10. The gutter is not limited to this type. An example is shown in FIG. 9 as a fifth embodiment of the present invention.

In the pipe-like leg portion 8 of the groove lid 3 shown in FIG. 9, the horizontal dimension of the horizontal piece 9 is set to be smaller than the vertical dimension of the hanging piece 10. Therefore, the curved portion 1 having an arc shape in the cross-sectional shape in the groove width direction.
The position of the center of 1 (the center of curvature) does not coincide with the intersection of the horizontal piece 9 and the hanging piece 10, and is located slightly to the right (inside of the groove) above the intersection in the example of FIG. In this case, it goes without saying that the cross-sectional shape of the curve receiving portion 13 that receives the curved portion 11 in the groove portion 2 is a shape corresponding to the shape of the curved portion 11. Contrary to the above case, the vertical dimension of the hanging piece 10 can be set to be larger than the groove width direction dimension of the horizontal piece 9. The center of curvature is located at a position off the intersection of the horizontal piece 9 and the hanging piece 10. Except for the above points, the other configuration is the same as that shown in FIG. 4, so that the same reference numerals as those in FIG. 4 are assigned and the description thereof is omitted.

The cross-sectional shape of the pipe-like leg portion 8 may be appropriately selected to be approximately a quarter arc as in the first to fourth embodiments or another arc as in this embodiment. it can. Thereby, the groove shape or structure such as the depth and width of the groove, the leg 8
Can be widely used depending on the necessary amount of raising, other installation conditions, and the like, and a side groove most suited to various conditions can be obtained. Alternatively, the inner end of the horizontal piece 9 may be the leg 8 extending inward from the hanging piece 10.

[0033]

As described above, according to the present invention, the pipe-like legs 8 fixed to the lower surfaces of the left and right ends of the groove lid 3 are brought into a curved surface contact state by the corresponding curve receiving portions 13 of the groove 2. Since it is supported, the backlash of the groove lid 3 can be reduced. Thereby, without causing a problem of durability reduction such as occurs when using rubber packing or the like,
It is possible to reduce noise due to rattling of the groove lid 3.

The curved portion 11 of the leg 8 supporting the load in the groove lid 3 is reinforced by the hanging piece 10, so that it can sufficiently withstand a predetermined amount of load, and since the leg 8 is pipe-shaped, The weight can be reduced accordingly. In particular, when the reinforcing piece 16 is provided in a closed cross section surrounded by the horizontal piece 9, the hanging piece 10, and the curved part 11, the curved part 11 supporting the load is reinforced not only by the hanging piece 10 but also by the reinforcing piece 16. Therefore, it can withstand a larger load.

The vertical rotation that is likely to occur when a load is applied to only one of the left and right ends of the groove lid 3 is caused by the linear portion 1 of the groove 2.
2 is prevented by the side surface of the side bar 7 of the groove lid 3 being brought into contact with the groove 2, it is possible to prevent such misalignment due to the vertical rotation. In particular, when the detent pieces 17 for preventing the vertical rotation of the groove lid 3 are fixed to the inner side surfaces of the hanging pieces 10 in the groove width direction of the right and left legs 8 respectively, the left and right sides of the groove lid 3 are fixed. When a load such as a person or a vehicle passing therethrough acts on one of the end sides and the groove lid 3 is about to rotate vertically, the side bar 7 in the groove lid 3
Not only does the side surface of the groove contact the linear portion 12 of the groove 2, but also the detent piece 17 on either side
, The vertical rotation of the groove lid 3 and the resulting positional displacement can be more reliably prevented.

At the time of manufacturing the groove lid 3, the leg 8 is attached to the grating 4 by adjusting the width between the left and right legs to the groove width of the groove 3, and in this state, the left and right legs 8 are attached.
Is fixed to the lower surface of the left and right ends of the grating 4, so that the left and right legs 8 can be adjusted to the shape of the groove lid mounting portion of the groove irrespective of the dimensional error of the grating 4 in the groove width direction. it can. Therefore, the groove 2
The production of the groove lid 3 matching the shape of the groove 3 becomes easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view in a groove width direction of a side groove showing a first embodiment of the present invention.

FIG. 2 is a plan view of a groove lid provided in a side groove.

FIG. 3 is a side view of the groove lid as viewed from the left side of FIG. 2;

FIG. 4 is a partially enlarged longitudinal sectional view showing, in an enlarged manner, a mounting state of a groove lid in a groove portion.

FIG. 5 is an enlarged vertical sectional view of a main part of a side groove showing a second embodiment of the present invention.

FIG. 6 is a longitudinal sectional view in a groove width direction of a side groove showing a third embodiment of the present invention.

FIG. 7 is a side view of the groove lid viewed from the left side of FIG. 6;

FIG. 8 is a longitudinal sectional view in a groove width direction of a side groove showing a fourth embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a main part of a side groove showing a fifth embodiment of the present invention.

FIG. 10 is a longitudinal sectional view showing a conventional side groove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side groove 2 Groove part 3 Groove lid 7 Sidebar 8 Leg part 9 Horizontal piece 10 Hanging piece 11 Curve part 12 Linear part 13 Curve receiving part 14 Waterway part

Claims (3)

[Claims] 1. A side groove having a groove portion (2) and a groove lid (3), wherein the groove lid (3) is constituted by a steel grating (4) having side bars (7) at both left and right ends in a groove width direction. A horizontal piece 9 having a predetermined width is provided on the lower surface of the left and right ends of the grating 4.
And a hanging piece 10 bent vertically downward from the inside of the groove width direction of the horizontal piece 9 so as to cross the horizontal piece 9 at a substantially right angle.
And a pipe-like leg 8 having a curved portion 11 extending from the outer end of the horizontal piece 9 to the lower end of the hanging piece 10 is fixed in the front-rear direction. The groove 2 is formed by a side bar of the grating 4. Side 7 of 7
a linear portion 12 having a linear vertical cross-sectional shape in the groove width direction corresponding to a, and a curve receiving portion continuously formed below the linear portion 12 along the curved portion 11 of the leg 8. 13
And a water channel portion 14 formed below the curved receiving portion 13
And a side groove. 2. A reinforcing section 16 for reinforcing the curved portion 11 is provided in a closed section surrounded by the horizontal piece 9, the hanging piece 10, and the curved portion 11.
The reinforcing piece 16 has one end fixed to an inner surface of a corner portion extending from the horizontal piece 9 to the hanging piece 10, and the other end fixed to an inner surface of the curved portion 11. The gutter according to 1. 3. The left and right leg portions 8 have inner side surfaces in the groove width direction of the hanging piece 10 so as to extend along the upper portion of the inner side surface of the water channel portion 14 of the groove portion 2 when the groove lid 3 is attached to the groove portion 2. And groove lid 3
The side groove according to claim 1 or 2, wherein detent pieces (17) for preventing vertical rotation of the side grooves are respectively fixed.