JP7627492B2 - Frame for ditch cover and construction method for ditch cover - Google Patents

Description

The present invention relates to a gutter cover frame for placing a gutter cover, and a gutter cover construction method using the gutter cover frame.

As a conventional fixing structure for gratings, JP 2014-114643 A discloses a technology in which a frame on which the grating is placed has a frame hole that is larger than the diameter of the threaded portion of the connecting bolt and through which the connecting bolt is inserted so as to be horizontally position adjustable, a box body with an open top that is fixed to the underside of the frame at the position where the frame hole is formed, and a nut that is accommodated in the box body so as to be horizontally position adjustable and engages with the peripheral wall of the box body to prevent it from rotating.

JP 2014-114643 A

However, with the technology disclosed in Patent Document 1, the box body is placed under the receiving frame and is buried in concrete, which causes an issue that mud, sand, etc., that gets inside the box body is difficult to remove. Patent Document 1's claim 4 etc. describes opening part of the box body to connect it to the inside of the groove, but to a lesser extent, there is still a similar issue.

The present invention has been made in consideration of the above points, and aims to provide a gutter cover receiving frame and gutter cover construction method that functions as a floating nut while having the nut structure protrude into the groove beyond the receiving frame, making it difficult for mud, sand, etc. to become clogged on the nut and its surroundings, and even if it does become clogged, it can be easily removed.

The gutter cover receiving frame of the present invention is
A receiving frame for a gutter cover is provided on the upper part of the gutter, and has a horizontal receiving surface for placing a gutter cover thereon and an inner vertical surface along the inner surface of the gutter, and the gutter cover is fixed with a bolt.
A nut structure is provided on the inner vertical surface,
The nut structure includes:
a box-shaped member including an upper plate having an upper hole larger than the thread diameter of the bolt, a lower plate having a lower hole of a position and size corresponding to the upper hole, and a side plate joining the upper plate and the lower plate at a predetermined distance, the box-shaped member protruding from the inner vertical surface toward the inside of the groove;
a rotation prevention plate disposed between the upper plate and the lower plate, the edge of which abuts against the side plate to prevent the rotation of the plate by more than a predetermined angle, and the plate having a through hole through which the bolt passes;
a nut provided at a position corresponding to the through hole of the anti-rotation plate;
The present invention is characterized by comprising:

According to the gutter cover receiving frame of the present invention, the nut structure protrudes from the receiving frame toward the inside of the gutter, and there is nothing below the nut structure. In addition, upper and lower holes are provided in the upper and lower plates of the box-shaped member, and a through hole is also provided in the anti-rotation plate, penetrating from the upper plate to the lower plate. This makes it easy to remove mud, sand, etc. that has gotten into the nut structure. In addition, the anti-rotation plate and the nut function as a floating nut that can move somewhat freely within the box-shaped member. This allows the bolt to be fastened without any problems even if the position of the bolt hole in the gutter cover is slightly misaligned.

A preferred example of the groove cover frame of the present invention is
Two of the side surfaces of the box-shaped member are open.

In a preferred embodiment of the gutter cover frame of the present invention, the side of the box-shaped member is open, so mud and sand inside the box-shaped member can be more effectively discharged. In addition, because two sides are open, at least one opening is maintained regardless of which side (side) of the box-shaped member is joined to the inner vertical surface of the frame.

A preferred example of the groove cover frame of the present invention is
The nut protrudes from the upper surface of the anti-rotation plate and the diameter of the upper hole is larger than the diameter of the nut, so that when the groove cover is fixed with the bolt, the anti-rotation plate is suspended between the upper plate and the lower plate, and when the nut structure is placed upside down and the groove cover is fixed with the bolt, the anti-rotation plate is pressed against the lower plate.

According to a preferred example of the gutter cover receiving frame of the present invention, when the bolt is fastened, the upper end of the nut abuts against the back surface of the gutter cover, and the anti-rotation plate is not pressed against either the upper or lower plate. Therefore, even after the gutter cover is fastened with the bolt, the gutter cover can be moved by the amount of play between the nut and the upper hole, and the position of the gutter cover can be adjusted after the bolt is fastened. Furthermore, if the nut structure is used upside down, when the gutter cover is fastened with the bolt, the anti-rotation plate is pressed against the lower plate, and the gutter cover does not move. Furthermore, since the upper hole is configured to be larger than the nut, and the lower hole is positioned and sized to correspond to the upper hole, it becomes easier to remove mud, sand, etc. that has entered the box-shaped member.

A preferred example of the groove cover frame of the present invention is
The protruding dimension of the nut from the anti-rotation plate is configured to be smaller than the thickness of the upper plate and the lower plate, and the diameter of the upper hole is configured to be larger than the diameter of the nut, so that when the nut structure is positioned face up and upside down and the groove cover is fixed with the bolt, the anti-rotation plate is pressed against the upper plate or the lower plate.

According to a preferred embodiment of the gutter cover receiving frame of the present invention, the gutter cover will not move after the bolt is tightened, regardless of whether the nut structure is used on the front or back.

A preferred example of the groove cover frame of the present invention is
The positions of the upper hole and the lower hole are away from the center of the upper plate and the lower plate, and different bolt positions can be accommodated by flipping the box-shaped member over or changing the side of the box-shaped member that is joined to the inner vertical surface.

According to a preferred example of the gutter cover receiving frame of the present invention, when the bolt hole of the gutter cover is close to the edge, such as at the corner of the receiving frame, the nut structure can be used upside down, or the side (side surface) of the nut structure that is joined to the inner vertical surface can be changed, so that the same nut structure can be used on the opposing sides of the gutter. Similarly, it can be adapted to multiple positions of the bolt hole of the gutter cover.

A preferred example of the groove cover frame of the present invention is
A reinforcing rib is provided on the underside of the lower plate or the upper plate, whichever is located lower, to abut against the inner side surface of the groove.

According to a preferred example of the gutter cover receiving frame of the present invention, even when the nut structure is attached to a receiving frame with a low height of the inner vertical surface, the joint with the inner vertical surface will not break.

The gutter cover construction method of the present invention comprises the steps of:
A method for constructing a gutter cover using the above-mentioned gutter cover receiving frame,
A frame manufacturing process for first manufacturing the frame for the gutter cover;
A frame installation process for installing the groove cover frame at an installation location;
A groove cover manufacturing process for manufacturing the groove cover after the frame manufacturing process;
a gutter cover installation process for installing the gutter cover on the gutter cover receiving frame and fixing it with the bolts;
The present invention is characterized by comprising:

According to the gutter cover construction method of the present invention, in addition to the above-mentioned effects of the gutter cover receiving frame, the gutter cover receiving frame, which is required first in the construction, can be manufactured first. Generally, the gutter cover receiving frame and the gutter cover are manufactured as a pair to align the position of the bolt hole of the gutter cover with the position of the nut of the receiving frame. In particular, countersunk bolts are sometimes used to prevent protrusions from being created on the gutter cover, and in such cases, more precise alignment is required, and it was essential to manufacture the gutter cover receiving frame and the gutter cover as a pair. For this reason, even though the gutter cover receiving frame is required first at the construction site, the gutter cover and the gutter cover receiving frame are manufactured at the same time at the manufacturing site. On the other hand, with the gutter cover construction method of the present invention, it is no longer necessary to precisely determine the position of the bolt hole of the gutter cover, and the gutter cover receiving frame can be manufactured and delivered first, and the gutter cover can be manufactured later, shortening the delivery time and reducing work in progress.

The gutter cover construction method of the present invention comprises the steps of:
A method for constructing a gutter cover using the above-mentioned gutter cover receiving frame,
A frame manufacturing process for manufacturing the groove cover frame by placing the nut structure portion facing outward;
A frame installation process for installing the groove cover frame at an installation location;
A groove cover manufacturing process for manufacturing the groove cover;
a gutter cover installation process for installing the gutter cover on the gutter cover receiving frame and fixing it with the bolts;
a position adjustment step of adjusting the position of the groove cover by an amount of play between the nut and the upper hole as necessary after the groove cover is fixed with the bolt;
The present invention is characterized by comprising:

The gutter cover construction method of the present invention comprises the steps of:
A method for constructing a gutter cover using the above-mentioned gutter cover receiving frame,
A frame manufacturing process for manufacturing the groove cover frame by placing at least a part of the nut structure upside down;
A frame installation process for installing the groove cover frame at an installation location;
A groove cover manufacturing process for manufacturing the groove cover;
a gutter cover installation process for installing the gutter cover on the gutter cover receiving frame and fixing it with bolts;
The present invention is characterized by comprising:

These gutter cover construction methods of the present invention can achieve the same effects as the gutter cover receiving frame described above.

The gutter cover construction method of the present invention comprises the steps of:
A method of constructing a gutter cover by using an existing frame to manufacture the gutter cover frame and using the gutter cover frame,
A gutter cover manufacturing process for manufacturing new gutter covers;
A removal process to remove the old gutter cover;
A frame manufacturing process for manufacturing the above-mentioned groove cover frame by joining the nut structure to the inner vertical surface of an existing frame;
A gutter cover installation process in which a new gutter cover is installed in the gutter cover receiving frame and secured with bolts;
The present invention is characterized by comprising:

According to the method for constructing a gutter cover of the present invention, the gutter cover frame of the present invention can be manufactured at the construction site using an existing frame. This eliminates the need to remove the frame and scrape and pour concrete for new construction, reducing construction costs and shortening the construction period.

As described above, the gutter cover receiving frame and gutter cover construction method of the present invention function as a floating nut, while the nut structure protrudes from the receiving frame into the inside of the gutter, making it difficult for mud, sand, etc. to become clogged around the nut and its surroundings, and even if it does become clogged, it can be easily removed.

A diagram illustrating a groove cover receiving frame according to one embodiment of the present invention. FIG. 4 is a diagram illustrating a nut structure. 11A to 11C are diagrams illustrating another example of the nut structure. 13 is a diagram illustrating an example in which a part of a nut structure is installed upside down at a corner of a receiving frame. FIG. 4A to 4C are diagrams illustrating the internal positional relationship of the nut structure. FIG. 11 is another diagram illustrating the internal positional relationship of the nut structure. FIG. 13 is a diagram illustrating a nut structure provided with reinforcing ribs. FIG. 1 is a diagram explaining a gutter cover construction method. FIG. 2 is another diagram illustrating the gutter cover construction method. FIG. 2 is another diagram illustrating the gutter cover construction method. FIG. 2 is another diagram illustrating the gutter cover construction method. FIG. 2 is another diagram illustrating the gutter cover construction method.

Hereinafter, an embodiment of the gutter cover receiving frame 1 and gutter cover construction method of the present invention will be described in detail with reference to the attached drawings. Note that Fig. 1 is a schematic diagram of the gutter cover receiving frame 1 of this embodiment. Fig. 2(A) is a perspective view of the nut structure 20, Fig. 2(B) is a perspective view of the nut structure 20 viewed from a different angle, Fig. 2(C) is a plan view of the nut structure 20, Fig. 2(D) is a bottom view of the nut structure 20, Fig. 2(E) is a plan view of the nut structure 20 with the upper plate 22 removed, and Fig. 2(F) is a cross-sectional view taken along line c1 in Fig. 2(C). FIG. 3(A) is a plan view of the nut structure 120 in which the positions of the upper hole 123 and the lower hole 125 are moved away from the center of the upper plate 122 and the lower plate 124, and the nut 130 protrudes on both sides of the anti-rotation plate 128, FIG. 3(B) is a bottom view of the nut structure 120 shown in FIG. 3(A), and FIG. 3(C) is a cross-sectional view taken along line A-A in FIG. 3(A).

First, the gutter cover receiving frame 1 will be described. As shown in FIG. 1, the gutter cover receiving frame 1 of this embodiment includes a receiving frame 10 and a nut structure 20. The receiving frame 10 is provided at the top of the groove 40 to form the edge near the upper end of the groove 40 and to place the gutter cover 2 thereon. It includes a horizontal receiving surface 11, an inner vertical surface 12, and an outer vertical surface 13. The horizontal receiving surface 11 is for placing the end of the gutter cover 2 on it. The inner vertical surface 12 is a vertical surface that is substantially the same surface as the inner vertical surface 41 along the inner side surface 41 of the groove 40, and the nut structure 20 is attached to this inner vertical surface 12 by a method such as welding. The outer vertical surface 13 restricts the movement of the gutter cover 2 in the width direction and has a height approximately equal to the thickness of the gutter cover 2. The gutter cover 2 is fixed to the nut structure 20 by a bolt 3 that is passed through the bolt hole 4.

As shown in Figs. 2(A) to (F), the nut structure 20 includes a box-shaped member 21, a rotation prevention plate 28, and a nut 30. The box-shaped member 21 is a substantially rectangular parallelepiped including an upper plate 22, a lower plate 24, and a side plate 26. The upper plate 22 is rectangular in plan view with an upper hole 23 larger than the thread diameter of the bolt 3, and constitutes the upper surface of the nut structure 20. The lower plate 24 is rectangular in bottom view with a lower hole 25 of a position and size corresponding to the upper hole 23 of the upper plate 22, and constitutes the lower surface of the nut structure 20. The positions of the upper hole 23 and the lower hole 25 are arranged along the center line c1 of the box-shaped member 21 in plan view, but away from the center line c2 perpendicular to the center line c1, as shown in Fig. 2(C). This allows the distances d1, d2, and d3 from each side (side surface) e1, e2, and e3 of the box-shaped member 21 to the nut 30 to be changed. By joining edges e1, e2, and e3 corresponding to the desired distances d1, d2, and d3 to the inner vertical surface 12 of the receiving frame 10, it is possible to accommodate various positions of the bolt holes 4. In this embodiment, the diameters of the upper hole 23 and the lower hole 25 are configured to be larger than the diameter nd of the nut 30. The side plates 26 join the upper plate 22 and the lower plate 24 at a predetermined distance, and constitute the side surfaces of the nut structure 20. The side plates 26 are provided only on two opposing surfaces of the side surfaces that constitute the box-shaped member 21, and the other two surfaces are openings 27.

The anti-rotation plate 28 is rectangular in plan view and has a through hole 29 through which the bolt 3 passes, and is configured so that its edge abuts against the side plate 26 to prevent it from rotating more than a predetermined angle. The size of the anti-rotation plate 28 is configured to be smaller than the inside dimensions of the box-shaped member 21. The nut 30 is joined to the upper surface of the anti-rotation plate 28 at a position corresponding to the through hole 29, and the groove cover 2 is fixed by tightening the bolt 3. The upper end of the nut 30 is inserted into the upper hole 23. This allows the nut 30 to be moved horizontally in the upper hole 23 until the periphery of the nut 30 abuts against the edge of the upper hole 23 (see dimension line ed in Figure 2 (F)), and prevents the anti-rotation plate 28 and the nut 30 from falling out of the opening 27 of the box-shaped member 21.

As shown in FIG. 3(A), the positions of the upper hole 123 and the lower hole 125 in the nut structure 120 can be arranged away from both the center lines c3 and c4 of the box-shaped member 121 in a plan view. This allows the distances d4, d5, d6, and d7 from the sides e4, e5, e6, and e7 of the box-shaped member 121 to the nut 130 to be changed. Furthermore, in this nut structure 120, the nut 130 protrudes from both sides of the anti-rotation plate 128, and as shown in FIG. 3(B), the nut structure 120 can be used in the same way even if it is turned upside down. By using this at the corner of the receiving frame 10 as shown in FIG. 4, the same nut structure 120 can be used on the right and left sides of the corner in the figure. Note that this nut structure 120 may be configured so that the nut 30 protrudes only from the upper surface of the anti-rotation plate 28, as shown in FIG. 2(F).

Next, referring to Figures 5(A) to (D), the detailed positional relationship inside the nut structure 20 will be described. Figure 5(A) is a diagram showing the nut structure 20 shown in Figure 2(F) in an enlarged view with the anti-rotation plate 28 abutting against the lower plate 24. In this state (front side), the height dimension h2 from the outer surface of the upper plate 22 to the inner surface of the lower plate 24 is higher than the height dimension h1 from the upper end of the nut 30 to the lower surface of the anti-rotation plate 28. As a result, the upper end of the nut 30 is inserted into the upper hole 23 and is lower than the outer surface of the upper plate 22 by the dimension s1. Therefore, as shown in Figure 5(B), when the groove cover 2 is fixed to the nut 30 with the bolt 3, the anti-rotation plate 28 rises by the dimension s1 and floats between the upper plate 22 and the lower plate 24. As a result, even when the groove cover 2 is fixed to the nut structure 20 with the bolt 3, the groove cover 2 can be moved by the amount of play between the nut 30 and the upper hole 23 (symbol ed in Figure 2(F)). In addition, as shown in FIG. 5(C), the gutter cover 2 can be lifted, making it easier to move the gutter cover 2.

On the other hand, to prevent the gutter cover 2 from moving after it has been fixed to the nut structure 20 with the bolt 3, the nut structure 20 shown in FIG. 5(A) can be turned upside down and used as shown in FIG. 5(D). In this case, when the gutter cover 2 is fastened with the bolt 3, the anti-rotation plate 28 is pressed against the inner surface of the lower plate 24. This prevents movement even if there is play between the nut 30 and the upper hole 23, and allows the gutter cover 2 to be completely fixed.

The nut structure 120 shown in FIG. 6(A) is an enlarged view of the nut structure 120 shown in FIG. 3(C) with the anti-rotation plate 128 abutting against the upper plate 122. Here, the protruding dimension h3 of the nut 130 from the anti-rotation plate 128 is configured to be smaller than the thickness h4 of the upper plate 122. The diameter of the upper hole 123 is configured to be larger than the diameter of the nut 130, and the upper end of the nut 130 is inserted into the upper hole 123. As a result, when the bolt 3 is fastened to the nut 130, the anti-rotation plate 128 is pressed against the inner surface of the upper plate 122, and the nut 130 and the anti-rotation plate 128 do not move.

Furthermore, the nut structure 120 shown in FIG. 6(B) is intended for use when the nut structure 120 shown in FIG. 6 is turned upside down, and is a diagram showing the state in which the anti-rotation plate 128 of the nut structure 120 shown in FIG. 6(A) is abutted against the lower plate 124. Here too, the protruding dimension h5 of the nut 130 from the anti-rotation plate 128 is configured to be smaller than the thickness h6 of the lower plate 124. In addition, the diameter of the pilot hole 125 is configured to be larger than the nut 130, and the lower end of the nut 130 is inserted into the pilot hole 125. As a result, when the bolt 3 is fastened to the nut 130, the anti-rotation plate 128 is pressed against the inner surface of the lower plate 124, and the nut 130 and the anti-rotation plate 128 do not move.

In addition, in the nut structure 20, 120 shown in FIG. 5(A) and FIG. 6(A)(B), two of the side faces of the box-shaped member 21 are opened to form the opening 27, 127, and the upper hole 23, 123 and the lower hole 25, 125 are provided at the same position and size. Furthermore, the nut structure 20, 120 protrudes from the inner vertical surface 12 to the inside of the groove 40. As a result, even if mud or sand gets into the box-shaped member 21, 121, it can be quickly discharged from the opening 27, 127 and the lower hole 25, 125. Even if mud hardens in the box-shaped member 21, 121, the mud inside can be easily removed by screwing a bolt as a handle into the nut 30, 130 to move the anti-rotation plate 28, 128 between the upper plate 22, 122 and the lower plate 24, 124, and inserting a tool such as a screwdriver into the opening 27, 127 to clean it.

As shown in FIG. 7(A), the nut structure 220 may be provided with a reinforcing rib 231 on the underside of the lower plate 224 that abuts against the inner vertical surface 41 of the groove 40. As shown in FIG. 7(B), some types of receiving frame 210 have a small height (width) of the inner vertical surface 212. In the case of such a receiving frame 210, the joining strength with the nut structure 20 tends to be weak, and the nut structure 220 and the box-shaped member 221 are easily broken when stepped on from above. To prevent this, the reinforcing rib 231 abuts against the inner vertical surface 41 of the groove 40 to prevent the nut structure 220 from breaking. When the nut structure 220 is turned upside down and used with the upper plate 222 on the bottom, the reinforcing rib 231 is provided on the underside of the upper plate 222.

Next, taking into account the configuration and function of the gutter cover frame 1 described above, an embodiment of a gutter cover construction method using the gutter cover frame 1 will be described.

[First embodiment]
The gutter cover construction method of this embodiment includes a frame manufacturing process, a frame installation process, a gutter cover manufacturing process, and a gutter cover installation process.
The frame manufacturing process is a process in which the gutter cover frame 1 as shown in Fig. 1 is manufactured in a factory or the like. In this process, the gutter cover 2 and the gutter cover frame 1 are generally manufactured simultaneously and in pairs to align the positions of the bolt holes in the gutter cover 2 and the nuts 30 on the frame 10 side. However, in this embodiment, since the nuts 30 move within the nut structure 20, it is not necessary to precisely align the positions of the bolt holes 4 and the nuts 30. This allows the gutter cover frame 1 to be manufactured and delivered prior to the gutter cover 3. In the frame manufacturing process, in order to maintain a predetermined distance between the paired frames 10, a width determining member 14 is provided between the frames 10 until the frame installation process is completed (see Fig. 8).

Next, as shown in Figure 8, the frame installation process involves installing the gutter cover frame 1 at the installation location. This involves placing the gutter cover frame 1 in the designated position from the base concrete 43 using anchors 45 and reinforcing bars 46. Next, if necessary, formwork or the like is used to pour the finishing concrete 44 up to the point shown by the dashed line. Once the finishing concrete 44 has cured, the width determining material 14 can be removed. Then, as shown in Figure 11, the gutter cover frame 1 is fixed in place with concrete 42.

Next, in the gutter cover manufacturing process, the gutter cover 2 is manufactured after the frame manufacturing process. Note that the manufacturing of the gutter cover 2 can be performed after the manufacturing of the gutter cover frame 1, and it does not matter if the manufacturing order is before, after, or parallel to the above-mentioned frame installation process.

Next, as shown in Figure 12, the gutter cover installation process involves installing the gutter cover 2 on the gutter cover receiving frame 1 and fixing it with the bolt 3. At this time, the nut 30 moves by an amount corresponding to the play with the upper hole 23, so the position of the gutter cover 2 can be fine-tuned during installation. Also, even if the machining position of the bolt hole 4 of the gutter cover 2 is slightly misaligned, the bolt 3 can be tightened to the nut 30 without any problems.

[Second embodiment]
The gutter cover construction method of this embodiment includes a frame manufacturing process, a frame installation process, a gutter cover manufacturing process, a gutter cover installation process, and a position adjustment process.

The frame manufacturing process, frame installation process, gutter cover manufacturing process, and gutter cover installation process can be understood by referring to the first embodiment described above, so a description thereof will be omitted. At this time, as shown in FIG. 5(A), the nut structure 20 is joined to the frame 10 with the top plate 22 facing up. Note that in this embodiment, the gutter cover manufacturing process may be performed after the frame manufacturing process as in the first embodiment, but it is not necessarily required that the gutter cover manufacturing process be performed after the frame manufacturing process (this also applies to the third and fourth embodiments).

Then, in the position adjustment process, after the gutter covers 2 are fixed with the bolts 3, the positions of the gutter covers 2 are adjusted as necessary by the amount of play between the nuts 30 and the upper holes 23 (see symbol ed in FIG. 2(F)). This is achieved by the action of the nut structures 20, 120 already described and shown in FIGS. 5(A)-(C) and 6(A) and (B). This position adjustment process may be performed on each gutter cover 2 after the gutter covers 2 are fixed with the bolts 3, or may be performed after multiple gutter covers 2 are fixed with the bolts 3.
[Third embodiment]
The gutter cover construction method of this embodiment includes a frame manufacturing process, a frame installation process, a gutter cover manufacturing process, and a gutter cover installation process.

The frame manufacturing process, frame installation process, gutter cover manufacturing process, and gutter cover installation process can be understood by referring to the first embodiment described above, and therefore a description thereof will be omitted. However, in this embodiment, in the frame manufacturing process, the nut structure 20 shown in FIG. 5(A) is used to join the frame 10 in an upside-down state with the lower plate 24 facing up. In this case, when the gutter cover 2 is installed, the nut 30 moves by an amount corresponding to the play with the upper hole 23 (see symbol ed in FIG. 2(F)), so that the position of the gutter cover 2 can be finely adjusted while it is installed. Then, after the bolt 3 is tightened, the anti-rotation plate 28 is pressed against the lower plate 24, and the gutter cover 2 can be completely fixed (see FIG. 5(D)).

[Fourth embodiment]
The gutter cover construction method of this embodiment includes a gutter cover manufacturing process, a removal process, a frame manufacturing process, and a gutter cover installation process. This is construction carried out using an existing frame 310 as shown in FIG. 9.

First, in the gutter cover manufacturing process, a new gutter cover 2 (see Figure 1) is manufactured. This gutter cover manufacturing process can also be carried out in parallel with the removal process and frame manufacturing process described below. Next, in the removal process, the old gutter cover 302 is removed from the gutter cover 302 and frame 310 as shown in Figure 9, resulting in the state shown in Figure 10. At this time, the gutter cover 302 is fixed with bolts or the like (not shown), so these bolts are also removed.

Next, as a frame manufacturing process, the nut structure 20 is joined to the inner vertical surface 312 of the existing frame 310 shown in FIG. 10 to manufacture the gutter cover frame 1 as shown in FIG. 11. At this time, in the past, the position of the bolt hole 4 of the newly manufactured gutter cover 2 and the position of the nut of the existing frame 310 often do not match, so the concrete 42 around the existing frame 310 is scraped off to remove the frame 310, and the newly manufactured frame is installed. However, in this embodiment, since the position of the nut 30 can be adjusted with the nut structure 20, the gutter cover frame 1 can be manufactured on-site using the existing frame 310. Next, as a gutter cover installation process, the new gutter cover 2 is fixed with bolts 3 to the gutter cover frame 1 manufactured using the existing frame 310, as shown in FIG. 12.

As described above, according to the groove cover receiving frame of this embodiment, the nut structure protrudes into the groove, and the lower hole is provided at the same position and size as the upper hole. Furthermore, the box-shaped member has only two side panels, and the remaining two sides are open. This makes it difficult for the inside of the nut structure to become dirty with mud or sand, and difficult to become clogged. Furthermore, in the unlikely event that the inside of the nut structure becomes clogged with mud, the anti-rotation plate can be moved vertically and horizontally within the box-shaped member, and tools can be inserted through the opening, making it easy to clean.

In addition, the nut structure can be used upside down, and the positions of the upper and lower holes are offset from the center lines c1, c2, c3, and c4 of the box-shaped member, allowing it to be used in accordance with various bolt positions. Also, by providing a nut only on the upper side of the anti-rotation plate, when the nut structure is turned over, the position of the gutter lid can be adjusted even after the bolt is fastened. On the other hand, by turning the nut structure upside down, the gutter lid can be completely fixed.

In addition, according to the gutter cover construction method of this embodiment, there is no need to manufacture the gutter cover and the gutter cover receiving frame as a pair, and only the gutter cover receiving frame that is required first for construction can be manufactured and delivered in advance. This makes it possible to shorten the delivery time and reduce work in progress. In addition, since the position of the gutter cover can be adjusted even after the gutter cover is fixed to the nut structure with bolts, construction can be completed quickly. In addition, in an embodiment that uses an existing receiving frame, there is no need to replace the receiving frame, so there is no need to cut and pour concrete, which shortens the construction period and reduces costs.

The above-mentioned gutter cover receiving frame and gutter cover construction method are examples of the present invention, and their configurations can be modified as appropriate without departing from the spirit of the invention.

1: Gutter cover receiving frame; 2, 302: Gutter cover; 3: Bolt; 4: Bolt hole;
10, 210, 310.... receiving frame, 11.... horizontal receiving surface, 12, 212, 312.... inner vertical surface, 13.... outer vertical surface, 14.... width determining member,
20, 120, 220: Nut structure; 21, 121: Box-shaped member; 22, 122, 222: Upper plate; 23, 123: Upper hole; 24, 124, 224: Lower plate; 25, 125: Lower hole; 26, 126: Side plate; 27, 127: Opening; 28, 128: Anti-rotation plate; 29: Through hole; 30, 130: Nut; 231: Reinforcement rib;
40: groove; 41: inner surface; 42: concrete; 43: base concrete; 44: finishing concrete; 45: anchor; 46: connecting rod;

Claims (10)

A receiving frame for a gutter cover is provided on the upper part of the gutter, and has a horizontal receiving surface for placing a gutter cover thereon and an inner vertical surface along the inner surface of the gutter, and the gutter cover is fixed with a bolt.
A nut structure is provided on the inner vertical surface,
The nut structure includes:
a box-shaped member including an upper plate having an upper hole larger than the thread diameter of the bolt, a lower plate having a lower hole of a position and size corresponding to the upper hole, and a side plate joining the upper plate and the lower plate at a predetermined distance, the box-shaped member protruding from the inner vertical surface toward the inside of the groove;
a rotation prevention plate disposed between the upper plate and the lower plate, the edge of which abuts against the side plate to prevent the rotation of the plate by more than a predetermined angle, and the plate having a through hole through which the bolt passes;
a nut provided at a position corresponding to the through hole of the anti-rotation plate;
A receiving frame for a gutter cover, comprising: The gutter cover receiving frame according to claim 1, in which two of the side faces of the box-shaped member are open. The gutter cover receiving frame according to claim 1 or 2, in which the nut protrudes from the upper surface of the anti-rotation plate and the diameter of the upper hole is larger than the diameter of the nut, so that when the gutter cover is fixed with the bolt, the anti-rotation plate is suspended between the upper plate and the lower plate, and when the nut structure is placed upside down and the gutter cover is fixed with the bolt, the anti-rotation plate is pressed against the lower plate. The gutter cover receiving frame according to claim 1 or 2, in which the protruding dimension of the nut from the anti-rotation plate is configured to be smaller than the thickness of the upper plate and the lower plate, and the diameter of the upper hole is configured to be larger than the diameter of the nut, so that when the nut structure is placed upside down and the gutter cover is fixed with the bolt, the anti-rotation plate is pressed against the upper plate or the lower plate. A gutter cover receiving frame according to any one of claims 1 to 4, in which the positions of the upper hole and the lower hole are away from the center of the upper plate and the lower plate, and different bolt positions can be accommodated by turning the box-shaped member upside down or by changing the side of the box-shaped member that is joined to the inner vertical surface. A groove cover receiving frame according to any one of claims 1 to 5, comprising a reinforcing rib on the underside of the lower plate or the upper plate, whichever is located lower, that abuts against the inner side of the groove. A method for constructing a gutter cover using the gutter cover frame according to any one of claims 1 to 6,
A frame manufacturing process for first manufacturing the frame for the gutter cover;
A frame installation process for installing the groove cover frame at an installation location;
A groove cover manufacturing process for manufacturing the groove cover after the frame manufacturing process;
a gutter cover installation process for installing the gutter cover on the gutter cover receiving frame and fixing it with the bolts;
A method for constructing a trench cover, comprising: A method for constructing a gutter cover using the gutter cover frame according to claim 3,
A frame manufacturing process for manufacturing the groove cover frame by placing the nut structure portion facing outward;
A frame installation process for installing the groove cover frame at an installation location;
A groove cover manufacturing process for manufacturing the groove cover;
a gutter cover installation process for installing the gutter cover on the gutter cover receiving frame and fixing it with the bolts;
a position adjustment step of adjusting the position of the groove cover by an amount of play between the nut and the upper hole as necessary after the groove cover is fixed with the bolt;
A method for constructing a trench cover, comprising: A method for constructing a gutter cover using the gutter cover frame according to claim 3,
A frame manufacturing process for manufacturing the groove cover frame by placing the nut structure upside down;
A frame installation process for installing the groove cover frame at an installation location;
A groove cover manufacturing process for manufacturing the groove cover;
a gutter cover installation process for installing the gutter cover on the gutter cover receiving frame and fixing it with the bolts;
A method for constructing a trench cover, comprising: A method of constructing a gutter cover by using an existing frame to manufacture a gutter cover frame according to any one of claims 1 to 6, and using the gutter cover frame,
A gutter cover manufacturing process for manufacturing new gutter covers;
A removal process to remove the old gutter cover;
A frame manufacturing process for manufacturing the groove cover frame according to any one of claims 1 to 6 by joining the nut structure part to an inner vertical surface of an existing frame;
A gutter cover installation process in which a new gutter cover is installed in the gutter cover receiving frame and secured with bolts;
A method for constructing a trench cover, comprising:

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