JPH0728193Y2 - Alignment block on the manhole neck - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an alignment block for a manhole, such as an iron lid receiving frame, which is attached to an opening of a neck part which is raised from a manhole in which an electric wire or the like is buried.

[Conventional technology]

As shown in the cross-sectional view of FIG. 7, the manhole's iron cover requires that the final level match the road surface slope in order to maintain consistency with the road surface, and the upper end of the neck 1 rising from the manhole and the manhole An alignment joint 3 is provided between the iron lid receiving frames 2.

Conventionally, the alignment joint 3 is formed by mortar on the upper end of the neck portion 1 at the site so as to match the road surface gradient.

[Problems to be solved by the device]

In the installation and replacement of manholes and the repair work of the surrounding road surface, in order to minimize the traffic restriction to passing vehicles, it is common to intensively perform at midnight or early morning when the traffic volume decreases.

However, since the joints are formed by mortar, a curing period is required, which requires a long working time and the problem of traffic restriction cannot be solved.

Also, if you try to obtain strength early by using early-strength cement or the like on the joints of this mortar etc., the curing time can be shortened, but during the curing period the shrinkage decreases sharply and cracks may occur. There is a problem that secondary adverse effects occur.

Further, due to the above-mentioned peculiarity of working hours, the difficulty of handling the materials used due to a shortage of workers and rapid construction becomes a problem.

Also, because the manhole cover of the manhole is fixed by mortar, the manhole cover moves up and down by a passing vehicle, and when the movement and the vibration cycle of the joint material are synchronized,
There is a problem that the lid bounces off in a severe case when the movement is amplified and the movement is enhanced.

[Means for solving the problem]

According to the present invention, an endless elastic support block having a slope and an endless elastic horizontal block similar to this support block are provided, and the horizontal end block is formed on the upper end of the neck portion standing in the manhole. Is placed, a supporting block is superposed on the supporting block, and an iron lid receiving frame of a manhole is installed on the supporting block.

[Action]

According to the above configuration, the horizontal block is placed on the upper end of the neck, the supporting block is aligned with the shape of the road and overlapped, and the manhole's iron lid receiving frame is installed on it. By fixing the iron cover frame of the manhole to the upper surface of the block with a predetermined slope and at a predetermined height by fixing it to the surrounding base plate with a flange via the flange, it is possible to prevent rainwater and the like from entering the manhole. Up-and-down movement is suppressed, and moreover, it is maintained in a state where the generation of noise when the vehicle passes is prevented.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a plan view of a supporting block, FIG. 3 is a sectional view, FIG. 4 is a plan view of a horizontal block, and FIG. 5 is a sectional view. is there.

The neck portion 1 and the iron lid receiving frame 2 are the same as those in the prior art, and 4 is the manhole iron lid.

The gradient in the width direction of the road is generally about 10/1000 to 20/1000, and the diameter of the manhole frame is standardized. Therefore, the present embodiment focuses on such a point, and in the figure, 5 is a supporting block, which is an endless annular member made of an elastic material having a predetermined gradient. Can be natural rubber, synthetic rubber, synthetic resin, asphalt and the like.

The cross-sectional shape of the supporting block 5 may be rectangular, trapezoidal, circular, elliptical, or the like as shown in FIG. 6, and a hollow portion may be formed therein if necessary.

Reference numeral 6 denotes a reinforcing material embedded in the supporting block 5 as needed, and various fibers such as glass, natural or synthetic resin, rubber material, synthetic resin material and metal material are used.

Here, when using fibers as a reinforcing material, embed them when fluctuating tension is generated inside the block to accelerate the deterioration of the material, and increase the elastic constant to reduce the vertical deformation amount. You can When a rubber material, a synthetic resin material, or a metal material is used as a reinforcing material, the rigidity may be low or the elastic material may have a low rigidity depending on the conditions such as height and thickness. It is possible to reduce the amount, and it is also possible to prevent the material from deteriorating due to variable tension generated inside the block.

Next, 7 is a horizontal block which is used by being overlapped with the above-mentioned supporting block 5, and is an endless annular body made of an elastic material having the same thickness all around, which is used for adjusting the height of the iron lid 4. There are several thicknesses, and as the elastic material, natural rubber, synthetic rubber as well as synthetic resin, asphalt, etc. can be considered as in the case of the supporting block 5.

The cross-sectional shape of the horizontal block 7 may be rectangular, trapezoidal, circular, elliptical, or the like as shown in FIG. 6, and a hollow portion may be formed therein if necessary.

Reference numeral 8 denotes a reinforcing material embedded in the horizontal block 7 as needed, and various fibers and metal materials similar to the reinforcing material are used.

Here, when using the fiber as a reinforcing material, similar to the above
When the variable tension is generated inside the block and deterioration of the material is promoted, the block is embedded and the elastic constant can be increased to reduce the vertical deformation amount. When using a rubber material, a synthetic resin material, or a metal material as a reinforcing material, the height,
When the rigidity is low or the material is made of an elastic material with low rigidity depending on conditions such as thickness, the amount of vertical deformation can be reduced, and even if fluctuating tension occurs inside the block, the material will not deteriorate. You can prevent it.

Reference numeral 9 is a root winding block that covers and protects the neck of the manhole.

According to the above structure, as shown in FIG. 1, the horizontal block 7 is placed on the upper end of the neck 1, and the supporting block 5 is placed thereon.
Align with the shape of the road and stack.

By installing the iron lid receiving frame 2 of the manhole on the supporting block 5 thus constructed and fixing it to the surrounding base plate with the bolts 10 via the flange 2a, the iron lid receiving frame 2 can be vertically moved at a predetermined gradient. It will be fixed in a suppressed state.

At this time, if the outer peripheries of the supporting block 5 and / or the horizontal block 7 or both of them are fitted and arranged so as to be in close contact with the inner peripheral surface of the root-wound block 9, the waterproofness and waterproofness will be excellent.

Further, although the above description has been described as a matching joint, the block is not necessarily limited to the matching joint block and may be configured as a block integrated with a block forming the neck portion.

[Effect of device]

According to the present invention described in detail above, an endless elastic support block having a slope and a horizontal block for adjusting the height of an iron cover also made of an endless elastic material are provided in the manhole. A horizontal block is placed on the upper end of the raised neck, and a supporting block is superposed on the horizontal block, so that a high-height elastic portion is formed in order to construct two blocks made of elastic material in a stacked manner. Therefore, even if an elastic material with high hardness is used, the natural period becomes sufficiently long, and the propagation speed inside the object also slows down, so the vertical movement of the manhole is suppressed and sound insulation is further performed. Become.

In addition, since the blocks are made of elastic material, there is good close contact between the blocks and the upper surface of the neck, and between the blocks and the iron cover receiving frame of the manhole, and the entry of water such as rainwater from these points into the manhole. Has the effect of being able to prevent.

Further, by bringing this block into close contact with the root-wound block around the neck, it is possible to further prevent water from entering.

In addition, these blocks are commercialized in advance in the factory, and it is possible to adjust the height of the iron lid receiving frame and match the road surface slope by light work such as manual labor on site, and further, it requires the curing time as in the past. Therefore, the construction time can be significantly shortened, the traffic congestion can be minimized, and the traffic can be passed immediately after the construction is completed.

As described above, the work is simplified, simplified, and rapidly constructed, so that the influence of the manhole construction on the passing vehicles is extremely reduced, so that it is not necessary to limit the working hours to late night or early morning.

Further, the height can be easily adjusted by changing the height of the blocks to be polymerized, and the workability is excellent.

[Brief description of drawings]

1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a plan view of a supporting block, FIG. 3 is a sectional view, FIG. 4 is a plan view of a horizontal block, and FIG. 5 is a sectional view. FIG. 6 is a sectional view showing an example of the shape of a block, and FIG. 7 is a sectional view showing a conventional example of a neck portion of a manhole. 1 …… Neck 2 …… Iron lid receiving frame 4 …… Iron lid 5 …… Supporting block 7 …… Horizontal block

Continuation of the front page (72) Inventor's structure Ara 2-21-1, Isoji, Minato-ku, Osaka City, Osaka Prefecture Nihon Dentsu Construction Co., Ltd. (72) Hidetoshi Kako 1-1-15, Nishigaoka, Uozumi-cho, Akashi-shi, Hyogo No. 16 (56) References Microfilm (JP, U) Practical Application Sho 59 -139374 (Saikai Sho 61-58248) Microfilm (JP, U) Photograph of the contents and drawings attached to the application. ) A microfilm (JP, U) of the details and drawings attached to the application

Claims (1)

[Scope of utility model registration request] 1. A support block made of an elastic material having an endless slope and a horizontal block made of an elastic material having an endless shape similar to this support block are provided, and the above-mentioned structure is provided at the upper end of a neck portion standing up in a manhole. Place the horizontal block,
A matching block for a manhole neck, characterized in that the supporting block is superposed on it, and a manhole iron-lid receiving frame is installed on it.