JPH0728199Y2 - 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 of 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, curing time is required to form the joints with mortar, and it takes a long working time to solve the problem of traffic restriction.

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, a plurality of arc-shaped blocks made of elastic material having a predetermined gradient are provided, and the arc-shaped blocks are continuous to form a supporting annular body having an endless gradient. An endless horizontal annular body is formed by connecting a plurality of elastic arc-shaped blocks made of elastic material at a predetermined height, and connecting the arc-shaped blocks in succession. In order to form a horizontal annular body by connecting the above-mentioned uniform circular arc-shaped blocks to the above, a gradient circular arc-shaped block is continuously formed on it to form a supporting annular body and polymerize it, and then a manhole iron cover It is characterized by installing a receiving frame.

[Action]

According to the above configuration, a uniform circular arc-shaped block is continuously formed on the upper end of the neck to form a horizontal ring-shaped body, and a gradient circular arc-shaped block is continuously formed thereon to form a supporting ring-shaped body to be polymerized, In addition, a manhole iron lid frame is installed on it.
By fixing the iron lid receiving frame of the manhole with bolts to the surrounding base plate through the flange of the iron lid receiving frame, the iron lid receiving frame of the manhole can be brought into close contact with the upper surface of the block at a predetermined height and with a desired gradient, and rainwater etc. can enter the manhole. In addition, the vertical movement is suppressed and the noise is prevented from being generated when the vehicle passes.

〔Example〕

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

FIG. 1 is a sectional view, FIG. 2 is a plan view showing a state in which gradient arc-shaped blocks are connected, FIG. 3 is a side view of the gradient arc-shaped blocks, and FIG. 4 is a state in which uniform arc-shaped blocks are connected. Is a plan view, FIG. 5 is a side view of the uniform arc-shaped block, and FIG. 6 is a sectional view showing an example of the shape of the block.

Therefore, in the drawing, the neck portion 1 and the iron lid receiving frame 2 are the same as those in the above-mentioned conventional technique, and 4 is the iron lid of the manhole.

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 gradient arc block made of elastic material of an arc shape having a predetermined gradient, and the arc shape is a circle. 1/2 or 1/4
(The drawing shows 1/2.) When the shapes are divided and continuous, a block of an endless annular body having a predetermined gradient is formed. As the elastic material, natural rubber, synthetic rubber, synthetic resin, asphalt and the like can be considered.

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

Reference numeral 5a is a reinforcing material embedded in the gradient arc-shaped 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, it may have low rigidity or may be composed of an elastic material having low rigidity depending on conditions such as height and thickness. It is also possible to reduce the amount and prevent the material from deteriorating due to fluctuating tension generated inside the gradient arc-shaped block.

The gradient arc-shaped block 5 may be constructed without a gradient depending on the location. In such a case, an arc-shaped block having no gradient and having the same thickness around the entire circumference is used. Also, it is advisable to prepare several types of thickness.

6 is a uniform arc-shaped block made of elastic material having a predetermined uniform height, and the arc shape is 1/2 or 1/4 of a circle (the drawing is 1 /
2 is shown. ) And the like, and when they are continuous, a horizontal endless annular block having a uniform upper surface is formed. As the elastic material, natural rubber, synthetic rubber, synthetic resin, asphalt and the like are conceivable as in the case of the gradient arc shaped block 5.

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

Reference numeral 6a is a reinforcing member embedded in the uniform arc-shaped block 6 as required, and has the same structure and operation as the reinforcing member 5a.

Reference numeral 7 is a root winding block that covers and protects the neck of the manhole.

According to the above-mentioned structure, as shown in FIG. 1, a horizontal uniform circular arc block 6 is connected to the upper end of the neck 1 to form an endless horizontal annular body, on which the gradient circular arc block 5 is formed.
Are continuously formed to form a supporting annular body and polymerize.

By installing the iron lid receiving frame 2 of the manhole on the gradient arc-shaped block 5 and fixing it to the surrounding base plate with the bolts 8 via the flange 2a, the iron lid receiving frame 2 is vertically moved at a predetermined gradient. It will be fixed with the motion suppressed.

The gradient arc-shaped block 5 is selected and used according to the height from the neck 1 to the road surface and the gradient.

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.

When the outer circumferences of the arc-shaped blocks 5 and 6 are fitted and arranged so as to be in close contact with the inner peripheral surface of the root-wound block 7, water blocking,
It will be excellent in waterproofness.

[Effect of device]

According to the present invention described in detail above, a plurality of arc-shaped blocks made of an elastic material having a predetermined gradient are provided, and when the gradient arc-shaped blocks are connected continuously, an annular body having an endless gradient is formed. In addition, a plurality of elastic material uniform arc-shaped blocks having a predetermined height are provided, and when these uniform arc-shaped blocks are continuous, an endless horizontal annular body is formed, An endless horizontal circular body is formed by connecting a horizontal uniform circular arc block to the upper end of the neck that rises in the manhole, and a gradient circular arc block is continuously formed on it to form a supporting circular body. The polymerization makes it possible to form a high-height elastic portion. Therefore, even if an elastic material having a high hardness is used for each block, the natural period becomes sufficiently long and the propagation speed inside the object becomes slow, so that the vertical movement of the manhole is suppressed, and sound insulation is further performed.

In addition, since the arc-shaped block is made of elastic material, there is good close contact between the block and the upper surface of the neck, and between the block and the iron cover frame of the manhole, and water such as rainwater can enter the manhole from these points. 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 arc-shaped blocks have been commercialized in the factory in advance, can be installed on site by light work such as human power, and because curing time like conventional concrete is not required, construction work is not required. This has the effect that the time can be significantly shortened, traffic congestion can be minimized, and that traffic can be passed immediately after completion of construction.

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 attaching and detaching the polymerized block, which has an effect of excellent workability.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a plan view showing a state in which gradient arc-shaped blocks are connected, FIG. 3 is a side view of the gradient arc-shaped blocks, and FIG. 4 is a uniform circle. FIG. 5 is a plan view showing a state in which arc-shaped blocks are connected, FIG. 5 is a side view of the uniform arc-shaped blocks, and FIG. 6 is a cross-sectional view showing a shape example of the blocks.
The figure is a cross-sectional view showing a conventional example of a neck portion of a manhole. 1 …… Neck part 2 …… Iron lid receiving frame 4 …… Iron lid 5 …… Slope circular arc block 6 …… Uniform circular arc block 7 …… Nemaki block

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References: Actually open: 64-47848 (JP, U) Actually open: 61-58248 (JP, U) Actually open: 62-12647 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A plurality of arc-shaped blocks made of an elastic material having a predetermined gradient are provided, and the supporting circular body having an endless gradient is formed by connecting the arc-shaped blocks in succession, , A plurality of uniform circular arc blocks made of elastic material at a predetermined height are provided, and an endless horizontal annular body is formed by connecting the uniform circular arc blocks, and the neck portion stands up in the manhole. At the upper end, the above-mentioned uniform arc-shaped block is continuously formed to form a horizontal ring-shaped body, and on top of that, a gradient arc-shaped block is continuously formed to form a supporting ring-shaped body and polymerized. A matching block on the neck of the manhole, which is characterized by the installation of a lid receiving frame.