JPH08326146A - Catch basin - Google Patents

Abstract

PURPOSE: To avoid formation of a step between a catch basin and the surface of the ground when the surface has frozen due to temperature drop, or the like. CONSTITUTION: This catch basin 7 is so designed that its frame 8 holding a cover 5 is free to slide in the vertical direction B, that the frame 8 is supported against a catch basin main body 9, and that the frame 8 is fitted with a flange 10 to be placed flush with the surface G of the ground. The flange 10 fitted to the frame 8 is extended while being inclined downward, is embedded beneath the surface G of the ground, and is formed as a meshlike one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage tub for maintenance / inspection installed at a branch point or a junction of drainage pipes. More specifically, the ground surface is frozen due to a decrease in temperature in winter. In this case, the present invention relates to a structure of a drainage basin capable of eliminating a step from the ground surface.

[0002]

2. Description of the Related Art Conventionally, as a drainage tub for maintenance / inspection, which is installed at a branch point of a drainage pipe or a junction, a structure as shown in FIG. 6 is generally used. in use. This drainage basin 1 is one in which a drainage basin body 3 to which a drainage pipe 2 is connected is buried in the soil, and an opening 4 through which a person goes in and out for maintenance and inspection faces the ground surface G at the upper part thereof. A lid 5 for opening and closing the opening 4 is provided via a frame body 6.

However, in such a drainage basin 1, when the ground surface G freezes in the direction of the arrow A due to a decrease in temperature in winter, the drainage basin body 3 itself is deeply buried in the soil. Because it stays in that position without freezing,
Only the ground surface G rises as shown by the chain line, and a step is generated between the lid 5 and the frame body 6 and the ground surface G.

This step is not only dangerous for pedestrians, but also causes a shock, vibration or noise when the vehicle is running, and is dangerous for driving. Also,
This not only spoils the aesthetics but also damages the road and makes snow removal difficult, which causes various problems.

The above-mentioned frost heave phenomenon is remarkable in a shaded area, and it is a book especially in simple pavement.
Further, with the recent progress of studless technology, thorough snow removal has come to be performed, so that the heat retaining effect due to the snowcap can no longer be expected, and it is becoming more frequent. Furthermore, if the temperature rises and falls repeatedly, the ground surface will repeatedly freeze and sink, resulting in further damage such as cracks, depressions, and peeling of the pavement, so some effective countermeasures have been desired.

The present invention has been made by paying attention to the conventional technique and the present situation as described above, and eliminates a step between the ground surface and the ground surface when the ground surface is frozen due to a decrease in temperature. The purpose is to provide a drainage basin that can be used.

[0007]

In order to solve the above problems, the drainage basin of the present invention has a frame body for holding a lid, which is supported on the drainage basin body so as to be slidable in the vertical direction. At the same time, the structure is such that the frame body is provided with the flange portion that is placed flush with the ground surface. In addition, the flange portion provided on the frame body is provided so as to extend downward in a slanting manner, and the flange portion is embedded below the ground surface, and also has a net-like shape.

[0008]

In the drainage basin of the present invention, the frame body for holding the lid is supported by the drainage basin body so as to be slidable in the vertical direction, and the collar portion provided on the frame body is flush with the ground surface. Since it is placed on, the frame body moves up and down with the vertical movement of the ground surface regardless of the position of the drainage basin body. For this reason,
Even if the ground surface rises due to freezing, the frame and the lid follow the movement of the ground surface and rise in a state of being flush with the ground surface, so that there is a step between the ground surface and the lid and the frame body. It never happens. Also, even if the frost heave disappears and the ground surface subsides due to an increase in temperature, etc., the frame body and lid also follow the movement of the ground surface and settle in a state of being flush with the ground surface. There is no step between the lid and the frame. Further, when the flange portion provided on the frame body is extended downward in a slanted manner and the flange portion is buried below the ground surface, the flange portion is not exposed to the ground surface, and the aesthetic appearance is further improved. In addition, if this brim is formed of a net-like one, the binding force with pavement members, soil, etc. will increase, and the frame body will be deformed or tilted due to unbalanced load or temperature distribution imbalance. The durability against can be improved. Further, the flange portion provided on the frame body is composed of a portion that is placed flush with the ground surface, and a net-like member that extends downward from the end portion of this portion in a slanted manner and is buried below the ground surface. In the case of being composed of the formed portion, it is possible to ensure the followability of the frame body to the movement of the ground surface, and also to enhance the binding force with the pavement member, the soil and the like.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same reference numerals are used for the portions common to the respective embodiments, and the explanation that emphasizes them will be omitted. FIG. 1 shows a drainage basin 7 of the present invention, in which a frame 8 holding a lid 5 is supported by a drainage basin main body 9 so as to be slidable in the vertical direction shown by an arrow B, and Collar part 1 mounted flush with G
The structure is such that 0 is provided in the frame body 8. The frame body 8 is provided with a sleeve 11, and a groove portion 12 which allows the sleeve 11 to be inserted and slidably supported is provided in the drainage basin body 9. Therefore, the frame body 8 can move up and down relatively with respect to the drainage basin body 9. Further, the flange portion 10 included in the frame body 8 is provided so as to extend horizontally outward, and the flange portion 10 is placed flush with the ground surface G. The lid 5 is openably and closably held by the frame body 8 and has the same size and shape as the conventional one. In addition, 13 is a cover and a sleeve 1
This is for preventing dirt, sand, etc. from entering around the groove 1 and the groove 12.

With this structure, even if the ground surface G rises due to frost, the frame 8 and the lid 5 follow the movement of the ground surface G and rise in the same plane as the ground surface G. By doing so, no step is formed between the ground surface G and the lid 5 and the frame body 8. Further, even if the frost heave is eliminated due to an increase in temperature and the ground surface G sinks, the frame body 8 and the lid 5 also sink in the same state as the ground surface G following the movement of the ground surface G. As a result, no step is formed between the ground surface G and the lid 5 and the frame body 8. The lid 5 may have a conventional size and shape.

As described above, in the drainage basin 7 of the present invention, since the lid 5 and the frame body 8 are always flush with the ground surface G and a flat state without steps can be maintained, shock and vibration are generated when the vehicle runs. Alternatively, there is no noise and driving is safe. In addition, the damage to the road can be eliminated, the appearance is not spoiled, and snow removal work is facilitated.

FIG. 2 shows another embodiment of the present invention, in which a sleeve 15 provided on the frame 14 is arranged inside the drainage basin body 3. With such a structure, the conventional drainage basin body 3 can be used as it is. Note that the other configurations are the same as in the previous embodiment, and description thereof will be omitted.

FIG. 3 shows another embodiment of the present invention, in which a flange portion 17 provided on the frame body 16 is extended downward in a slanting manner, and the flange portion 17 is located below the ground surface G. It is configured to be buried. With such a configuration, the collar portion 17 is not exposed to the ground surface G, and the aesthetic appearance can be further improved. Note that the other configurations are the same as in the previous embodiment, and description thereof will be omitted.

FIG. 4 shows still another embodiment of the present invention, in which the collar portion 19 provided on the frame 18 is formed of a metal net and extends downward in a slanted manner. The portion 19 is configured to be buried below the ground surface G.
With such a structure, the collar portion 19 is formed on the ground surface G.
The appearance can be further improved without being exposed to the outside, and the binding force with pavement members, soil, etc. is increased, and durability against deformation or inclination of the frame 18 due to unbalanced load or temperature distribution imbalance, etc. It can be improved. Note that the other configurations are the same as in the previous embodiment, and description thereof will be omitted.

FIG. 5 shows still another embodiment of the present invention, in which a collar portion 21 provided on the frame body 20 is a horizontal portion 10 which is placed flush with the ground surface, and the horizontal portion 10. And a portion 19 formed of a net made of metal, which is inclined downward from the end of the and is buried below the ground surface G. With such a configuration, the ground surface G
It is possible to ensure the followability of the frame body 20 with respect to the vertical movement of the frame body 20 and to increase the binding force between the frame body 20 and the pavement member, soil, or the like. Note that the other configurations are the same as in the previous embodiment, and description thereof will be omitted.

In this way, the drainage basin of the present invention is such that the lid and the frame are always flush with the ground surface, and can maintain a flat state without steps. It can be similarly applied to various manholes such as pipes or underground power transmission lines.

[0017]

EFFECTS OF THE INVENTION The drainage basin according to the present invention has the contents as described above, and the lid and the frame are always in contact with the ground surface even when the ground surface freezes or sinks due to a decrease or rise in temperature. Therefore, it is possible to maintain a flat state without a step. Therefore, no impact, vibration, or noise is generated when the vehicle runs, and driving is safe. In addition, the damage to the road can be eliminated, the aesthetic appearance is not spoiled, and snow removal work is facilitated.
Further, the flange portion provided on the frame body is extended downward in an inclined shape,
When this collar part is buried below the ground surface, it is possible to further improve the aesthetic appearance without exposing the collar part to the ground surface. Furthermore, in the case where this collar part is shaped like a net, As a result, the binding force with the pavement member, the soil, etc. is increased, and the durability against deformation or inclination of the frame due to an unbalanced load or an imbalance in the temperature distribution can be improved.

[Brief description of drawings]

FIG. 1 is a cut end view showing an embodiment of the present invention.

FIG. 2 is a cut end view showing another embodiment of the present invention.

FIG. 3 is a cut end view showing another embodiment of the present invention.

FIG. 4 is a cut end view showing still another embodiment of the present invention.

FIG. 5 is a cut end view showing still another embodiment of the present invention.

FIG. 6 is a cut end view showing a conventional example.

[Explanation of symbols]

 5 ... Lid 7 ... Drainage basin 3, 9 ... Drainage basin main body 8, 14, 16, 20 ... Frame body 10, 17, 19, 21 ... Collar part

Claims (4)

[Claims] 1. A drainage basin comprising a lid and a frame body for holding the lid on an upper part of the drainage basin body, wherein the frame body is supported by the drainage basin body so as to be vertically slidable. A drainage basin comprising a collar portion mounted flush with the surface. 2. The drainage basin according to claim 1, wherein the brim portion provided on the frame body extends downward in a slanting manner and is buried under the ground surface. 3. The drainage basin according to claim 2, wherein the flange portion provided on the frame body is formed in a mesh shape. 4. A brim portion provided on a frame body, a portion that is placed flush with the ground surface, and a net-like shape that extends downward from the end portion of this portion in a slanting manner and is buried below the ground surface. The drainage basin according to claim 1, wherein the drainage basin comprises a portion shaped like the above.