JPH072700Y2 - Manhole height and tilt adjustment block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a manhole height and inclination adjusting block used for adjusting the height of a manhole cover frame.

(Prior Art) As shown in FIG. 5, in the manhole 1, a manhole cover frame 3 is placed on a manhole side block 2, and the manhole cover frame 3 is fixed to the side block 2 with cement 4 or the like. Are placed on the lid frame 3.

The lid 5 of the manhole 1 is usually provided so as to be flat with the surface of the road 6 on which the manhole 1 is attached.

Then, when a thicker pavement or the like is applied on the road surface 6 or the like, the road surface 6 is lifted up as shown in FIG. 6 and a depression is formed in the portion of the lid 5 of the manhole 1, and the road surface 6 is flattened. No longer. Since it is dangerous in this case, the fixing between the manhole cover frame 3 and the side block 2 is peeled off, a concrete wall 7 is separately formed on the side block 2 as shown in FIG. 7, and the cover frame 3 is lifted up. I was taking means.

However, this method requires a lot of time and man-hours, and there is a problem particularly in a heavy traffic area.

Therefore, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 54-136747, four-divided circular concrete boards of uniform thickness are aligned with each other to form an annular adjustment board, which is formed into a multi-stage manhole. It piled up on the upper end neck part of the concrete wall, thereby adjusting the height of the manhole neck part to solve the problem of the concrete method.

(Problems to be solved by the invention) However, since the adjusting lid disclosed in Japanese Utility Model Laid-Open No. 54-136747 has the same height, there are the following problems to be improved. That is, when the manhole is to be installed on a sloping ground such as a slope, the manhole side block is embedded vertically, and the lid frame is inserted on the upper surface of the manhole side block by interposing a conventional adjustment panel. If the lid is placed on top of it, there is a problem that the surface of the sloping ground and the surface of the lid do not match, and only one side near the manhole is elevated.

And, in order to correct this raised step, for example, it can be done only by concrete, etc., and time and man-hour like the concrete wall, and the one disclosed in Japanese Utility Model Publication No. 54-136747 is divided into four parts. By aligning the circular concrete boards with uniform thickness with each other, an annular adjusting board is formed, and the height is adjusted by stacking this on the upper neck of the concrete wall of the multi-stage manhole. When the abutting surfaces when stacked are not in close contact with each other and are partially lifted up, there is a risk that the dynamic load and repetitive load exerted by the traffic of the vehicle may cause twisting and cracking.

The present invention has been made to solve the above-mentioned conventional problems, and an adjusting block having an inclined surface is interposed between the manhole cover and the manhole-side mass,
An object of the present invention is to provide a manhole height and inclination adjusting block which enables a manhole to be installed even on a sloped road surface such as a slope, improves its workability, and avoids cracking of the adjusting block.

(Means for Solving Problems) As a means for solving the above-mentioned conventional problems, the present invention interposes between the upper surface of the manhole-side mass and the manhole cover frame to increase the height of the manhole cover and the road surface. In the manhole height and inclination adjusting block for adjusting the height and inclination of the lid of the manhole so as to match, the adjusting block is subdivided into a hollow arc-shaped block, and at least one of the upper and lower surfaces of the arc-shaped block. Is used as an inclined surface, and the arc-shaped block is assembled into a circular shape to form an inclined surface that is inclined in one direction on at least one of the upper and lower surfaces of the adjustment block.

(Operation) As described above, the present invention forms a circular adjustment block, which is disposed above a side mass of a manhole installed on a slope, by subdividing a hollow arc-shaped block, and Since at least one of the upper and lower surfaces of this adjustment block is provided with an inclined surface that inclines in one direction, when using the adjustment block, select the adjustment block according to the inclination angle of the slope where the manhole is installed. However, by disposing this adjustment block on the upper surface of the side block, it becomes possible to dispose the lid frame disposed on the upper part of the adjustment block in accordance with the sloped surface of the slope. Therefore, if the manhole cover is placed on the cover frame, the surface of the manhole cover and the sloping ground can be finished at the same height and slope, and the road surface can be made flush with the sloping ground. It will be possible to finish.

Further, the adjustment block is formed by a subdivided arc-shaped block, which is interposed between the upper surface of the manhole side block and the manhole cover frame, so that the dynamic load and repetitive load of a vehicle passing over the manhole can be reduced. Since the arc-shaped block is applied to the arc-shaped block, twisting does not occur in the arc-shaped block even if the above-mentioned load is frequently applied to the arc-shaped block, and thus cracks caused by the twist can be avoided.

Further, since the adjusting block is formed by the subdivided arc-shaped blocks, it becomes easy to carry during the work of adjusting the height and the inclination of the manhole, and the workability can be improved.

In addition, since the hollow portion is formed in the arc-shaped block, it is possible to reduce the weight of the arc-shaped block, facilitate the carrying during the above-mentioned work, and further improve the workability. Further, by injecting mortar into the hollow portion formed in this arc-shaped block, the arc-shaped block can be firmly fixed.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The same members as those shown in FIGS. 5 to 7 are designated by the same reference numerals in the following description.

FIG. 1 is a perspective view of an adjustment block 10 formed in a circular shape by combining arc-shaped blocks 10a, and FIG. 2 is an adjustment block 10 having an inclined surface that inclines in one direction on its upper surface, a side block 2 and a lid frame. 3 is a cross-sectional view showing a state in which it is interposed between FIG.

As shown in FIG. 1, the adjustment block 10 formed in a circular shape by assembling the subdivided arc-shaped blocks 10a,
The radius of curvature of the inner wall surface is substantially the same as the inner diameter of the upper part of the manhole-side mass 2. That is, the adjusting block 10 has the same radius of curvature r as the upper radius r of the side block 2.

The subdivision means a state in which the adjustment block 10 is divided at a narrow angle. For example, in the example,
When the adjustment block 10 is viewed in the 90 ° range, it means that it is divided into four, that is, the central angle is divided into 22.5 °.

Further, as shown in FIG. 2, an inclined surface is formed on the upper surface of the arc-shaped block 10a, and the adjustment block 10a is formed by assembling the arc-shaped block 10a having the inclined surface.
An inclined surface that is inclined in one direction is formed on the upper surface of the. That is, the height h of the arc-shaped block 10a gradually decreases from one side to the other side in the diameter direction of the adjustment block 10.

Therefore, when the arc-shaped block 10a is assembled, the adjustment block 10 has a flat surface on the upper surface of the side block 2 and an inclined upper surface.

Next, the operation of this embodiment will be described. As shown in FIG. 2, between the upper surface 2a of the manhole side block 2 which is vertically embedded and the manhole cover frame 3, adjustment having an inclined surface on the upper surface, which is selected according to the inclination of the slope 6a. Block 10 is interposed.

In order to form the arc-shaped block 10a into the circular adjustment block 10, the arc-shaped block 10a is fixed to the upper surface 2a of the side block 2 with cement 4 or the like and placed on the entire circumference of the side block 2 without any gap.

The upper surface of the adjustment block 10 thus formed in a circular shape and the lower surface of the lid frame 3 are also fixed to each other by the cement 4, so that the lid 5 of the manhole 1 and the slope 6a are flattened by the adjustment block 10.

When the slope has various slopes, the adjusting block 10 having a different slope is used accordingly. Further, when the heights are slightly different, the liner 11 having the same planar shape as the planar shape of the arc-shaped block 10a is interposed together with the arc-shaped block 10a so that the manhole cover 5 and the road surface 6 are not stepped. To

Also, when the manhole 1 is installed on a road surface that is connected by a gentle slope so that there is no step between the sidewalk surface and the road surface, only one of the slopes 6a near the manhole 1 is uplifted. Even in such a case, if the adjustment block 10 having a slightly different height and an upper surface inclined is placed on the upper surface 2a of the manhole side block 2 and the manhole cover frame 3 is placed thereon, the manhole cover 3 is placed. 5 and the slope 6a can be on the same plane.

In this way, in the case of a slope 6a such as a slope, even if the side blocks 2 are vertically embedded, it is possible to form the manhole 1 having no unevenness with respect to the slope 6a. Further, since the adjustment block 10 is formed by the arc-shaped block 10a which is divided into four in the range of 90 °, even if a dynamic load and a repeated load such as a vehicle are constantly applied to the arc-shaped block 10a, no twist occurs, It becomes possible to prevent cracking.

As shown in FIG. 3, the arc-shaped block 10a is provided with the hollow portion 12, so that the weight can be reduced and the transportation efficiency can be improved. And
By injecting cement into the hollow portion 12, it becomes possible to firmly fix the side block 2.

In addition, as shown in FIG. 4a, a convex portion 13 and a concave portion 14 are provided on the surface of the arc-shaped block 10a that is connected to the other arc-shaped block 10a, and the convex portion 1 of the next block is formed in the concave portion 14 of one block 10a.
3 may be inserted to strengthen the connection between the blocks 10a.

Further, as shown in FIG. 4b, the arc-shaped block 10a is provided with a convex portion 15 and a concave portion 16 in the vertical direction, and the arc-shaped block 10a is vertically arranged.
The heights may be adjusted by stacking, but the projections 15 and the recesses 16 do not necessarily have to be provided in the upper and lower stacks.

It should be noted that the arc-shaped block 10a may not be arranged over the entire circumference as shown in FIG. 1 but may have a part without the arc-shaped block 10a in some places, if necessary.

In the adjustment block 10 of the present embodiment, the arc-shaped block 10a having the inclined surface formed on the upper surface is assembled into a circular shape to form the inclined surface that is inclined in one direction on the upper surface of the adjustment block 10, but this is not done. By assembling the arc-shaped block 10a having inclined surfaces formed on the upper and lower surfaces, inclined surfaces that are inclined in one direction may be formed on the upper and lower surfaces of the adjustment block.

Furthermore, although the inclined surface is formed on the adjustment block by combining the arc-shaped blocks with the inclined surface formed on the upper surface, this is not done. For example, four different heights of 3 cm, 4 cm, 5 cm, 6 cm The circular adjustment block 10 may be formed by combining the arc-shaped blocks 10a, and an inclined surface may be formed so that the height difference between the circular adjustment blocks 10 is 1 cm.

(Effects of the Invention) Since the present invention is configured as described above, it is possible to easily cope with a sloping ground by using an adjustment block selected in advance according to the sloping ground on a sloping road surface or the like. The road surface and the surface of the manhole cover can be surely made flush with each other. by this,
The steps near the manhole can be easily adjusted, which saves time and man-hours and improves work efficiency.

In addition, the adjustment block is formed by subdivided arc-shaped blocks, and this is interposed between the upper surface of the manhole side block and the manhole cover frame, so that the dynamic load and repetitive load of the vehicle passing over the manhole are each arc-shaped. Since it was applied to the block, even if the above load is frequently applied to the arc-shaped block, the arc-shaped block will not be twisted,
It is possible to prevent cracks caused by twisting.

Further, since the adjustment block is formed by the subdivided arc-shaped block, it is easy to carry when adjusting the height and inclination of the manhole and the workability can be improved.

Further, since the hollow portion is formed in the subdivided arc-shaped block, it is possible to reduce the weight of the arc-shaped block, facilitate the carrying during the above-mentioned work, and further improve the workability. In addition, the arc-shaped block can be firmly fixed by injecting mortar into this hollow portion.

[Brief description of drawings]

FIG. 1 is an inclined view of an adjusting block formed by combining arc-shaped blocks into a cylindrical body, and FIG. 2 is a sectional view showing a place where the adjusting block is placed on the upper surface of a side mass of a manhole buried in an inclined road surface. FIG. 3 is a perspective view of an embodiment of the arcuate block, FIGS. 4a and 4b are perspective views of another embodiment of the arcuate block, FIG. 5 is a sectional view of a conventional manhole, and FIG. FIG. 7 is a cross-sectional view of the case where the road surface is lifted up, and FIG. 1 …… Manhole 2 …… Manhole side block 3 …… Manhole cover frame 10 …… Adjustment block 10a …… Arc block

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-192134 (JP, A) SAI-KAI 54-136747 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A manhole height and inclination for adjusting the height and inclination of the manhole cover so that the height of the manhole cover and the height of the road surface are made to intervene between the upper surface of the manhole side block and the manhole cover frame. In the tilt adjustment block, the adjustment block is subdivided into a hollow arc-shaped block, at least one of the upper and lower surfaces of the arc-shaped block is an inclined surface, and the arc-shaped block is assembled in a circular shape to obtain the upper and lower surfaces of the adjustment block. A manhole height and tilt adjustment block, characterized in that a tilted surface that tilts in one direction is formed on at least one of the above.