JP2840079B2 - Adjustment ring fixing structure and fixing bolt in assembly manhole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a building block, a straight wall pipe, a sloping wall pipe, and an adjustment ring for height adjustment. Fixing structure of the adjustment ring in the assembly manhole constructed by stacking the lid receiving frame and lid etc. in order,
The present invention relates to a fixing bolt for fixing an adjustment ring.

<Prior Art> Generally, manholes formed in water and sewage systems or underpasses are formed in a vertical direction. The manhole cover is placed on the same plane as the surface of the earth. Therefore, in the case of a manhole installed on a slope, it is necessary to install the lid at a slope equal to the slope of the ground surface.

For this reason, the manhole installed on the slope is provided with an adjustment washer 12 at a predetermined height on an adjustment ring 11 which is an upper structural member of the manhole as shown in FIG. The inclination of the lid receiving frame 5 placed on the upper part of the frame is made equal to the gradient of the ground surface, and the gap between the adjustment ring 11 and the lid receiving frame 5 is integrated with mortar or concrete to fill the gap. At this time, the lid receiving frame 5 is fixed to the swash wall tube 4 together with the adjustment ring 11 by a bolt 13 screwed into a buried screw buried in the upper part of the swash wall tube 4.

The manhole configured as described above is installed in the vertical direction, and the lid is installed so as to match the slope of the ground surface.

<Problems to be Solved by the Invention> However, in the above-described conventional technology, the straight wall pipe, the inclined wall pipe, and the adjustment ring 11 are stacked on the skeleton block, and the adjustment washer 12 is further placed on the adjustment ring 11 on the ground surface. Since the lid receiving frame 5 is attached so as to match the slope and the gap between the adjusting ring 11 and the lid receiving frame 5 must be closed with mortar or concrete, a lot of time is required for assembling the manhole, and therefore, This is a cost increase factor.

Recently, in order to improve the above-mentioned drawbacks, Japanese Patent Application Laid-Open Nos. 59-187924 and 59-192134, and Japanese Utility Model Application Laid-Open No.
As disclosed in Japanese Patent No. 66747, an adjustment ring for adjusting the inclination of a manhole and an inclination angle adjustment method using the adjustment ring have been developed.

However, since the above-mentioned adjusting rings adjust the angle in a stepless manner while rotating, it has been difficult to firmly fix these adjusting rings to the frame using fixing bolts or the like in a stable state.

An object of the present invention is to provide an adjustment in an assembling manhole in which a lid can be installed on the same plane as the ground surface irrespective of the inclination of the ground surface at the installation site of the manhole and can be firmly fixed to a frame. A fixing structure for a ring and a fixing bolt are provided.

<Means for Solving the Problems> The fixing structure of the adjusting ring in the assembling manhole of the present invention for solving the above-mentioned problems is as follows. A fixing structure of the adjusting ring in the assembled manhole, wherein the adjusting ring is formed by combining a plurality of rings having a sloped surface on one surface and a plurality of elongated holes formed on the circumference. A fixing bolt placed above the wall tube and having a male screw and a female screw rotatably mounted in a direction orthogonal to the axial direction of the female screw is screwed into the embedded screw embedded in the inclined wall tube. In addition, the adjusting ring is fixed to the inclined wall pipe by inserting the adjusting ring into a long hole of the adjusting ring and further fastening a male screw to a female screw of a fixing bolt.

The fixing bolt is a fixing bolt for fixing the adjusting ring of the assembling manhole to the inclined wall pipe, and has a male screw screwed into a buried screw embedded in the inclined wall pipe, and has an axial direction of the male screw. And a female screw mounted so as to be rotatable in the orthogonal direction.

<Operation> In the fixing structure of the adjusting ring in the above-mentioned assembly manhole, a plurality of rings each having a slope formed on one side are combined, and the slopes formed on each ring are stacked facing each other, and each ring is rotated with respect to each other. In this case, the crossing angles of the axes of the plurality of rings can be adjusted steplessly. Further, since a plurality of slots are provided on the circumference of the adjusting ring, after the adjustment is completed,
The oblong wall pipe is inserted by selecting a long hole overlapping each other and inserting a fixing bolt having a male screw and a female screw rotatably mounted in a direction orthogonal to the axial direction of the male screw into the long hole. The adjusting ring can be fixed to the inclined wall pipe by screwing into the buried buried screw and further fastening a male screw to the female screw of the fixing bolt.

Further, since the fixing bolt is constituted by a male screw screwed into a buried screw buried in the inclined wall pipe and a female screw rotatably mounted on the male screw, the plurality of fixing bolts are adjusted according to the gradient of the ground surface. Even if the rings intersect, since the female screw can be rotated in accordance with the intersecting angle with respect to the male screw that is screwed into the embedded screw embedded in the inclined wall tube, a plurality of rings and The lid receiving frame can be securely fixed.

<Embodiment> An embodiment of a structure for fixing an adjustment ring and a fixing bolt in an assembling manhole to which the above-described means is applied will be described below with reference to the drawings.

1 is a sectional explanatory view of the adjusting ring, FIG. 2 is a front explanatory view, FIGS. 3A and 3B are explanatory views of a ring constituting the adjusting ring, and FIGS. 4A and 4B. Is an explanatory view for adjusting the inclination angle, FIG. 5 is an explanatory view of the fixing bolt, and FIG. 6 is an explanatory view of the connecting bolt.

In the figure, an adjusting ring 1 has the same function as a height adjusting ring used in a conventional assembly manhole, and also has a function for adjusting a gradient.
The adjusting ring 1 has two rings, namely a lower ring 2
And the upper ring 3.

The lower ring 2 is mounted on the inclined wall pipe 4 of the assembly manhole, and the lower surface is formed as a horizontal surface 2a,
The upper surface is formed as a gradient surface 2b having a predetermined gradient. The upper ring 3 is placed on the lower ring 2, and the lid receiving frame 5 is placed on the upper ring 3. The lower surface of the upper ring 3 is formed as a gradient surface 3a having a predetermined gradient, and the upper surface is formed as a horizontal surface 3b. The adjustment ring 1 is formed by stacking the inclined surface 2b of the lower ring 2 and the inclined surface 3a of the upper ring 3 so as to face each other.

In this embodiment, the inclined surface 2b of the lower ring 2 and the inclined surface 3a of the upper ring 3 are each formed at an angle of about 5.2 degrees.

Therefore, when the lower ring 2 and the upper ring 3 are stacked as shown in FIG. 4 (A), the horizontal surfaces 2a and 3
b are parallel to each other. When the two rings 2 and 3 are stacked as shown in FIG. 2B, the horizontal plane 3b of the upper ring 3 has a maximum inclination angle of about 10.4 degrees with respect to the horizontal plane 2a of the lower ring 2. By rotating the lower ring 2 and the upper ring 3 from each other from the state shown in FIG. 1A to the state shown in FIG. 1B, the gradient of the horizontal surface 3b of the upper ring 3 can be changed from the horizontal state to about 10.4 degrees. It can be adjusted steplessly. The angle range is the normal ground slope,
In particular, it is a value sufficient to be applied to road gradients. But
The angles of the inclined surfaces 2b and 3a of the lower ring 2 and the upper ring 3 are not limited to the above-mentioned angles, but may be formed by other angles.

A plurality of elongated holes 6 are formed on the circumference of each of the rings 2 and 3 as shown in FIG. The slot 6 is placed on each of the rings 2 and 3 and the upper ring 3 at that position by rotating the rings 2 and 3 so that the horizontal plane 3b of the upper ring 3 matches the gradient of the ground surface. When the cover receiving frame 5 is fixed to the inclined wall tube 4, the fixing bolt 7 is fitted therein.

The width of the elongated hole 6 is formed to be sufficiently larger than the diameter of the fixing bolt 7. When each of the rings 2 and 3 is made of concrete, it is preferable to bury a reinforcing material made of cast iron or steel along the long hole 6.

The number of the long holes 6 is not particularly limited, and may be any number as long as the rings 2 and 3 can be rotated with each other and fixed at an arbitrary position.

 The fixing bolt 7 is configured as shown in FIG.

In the figure, a male screw 7a is screwed into a buried screw 4a composed of a female screw buried in the inclined wall tube 4. Male screw 7a
Is provided with a pin 7b arranged in a direction perpendicular to the axial direction of the male screw 7a. A female screw 7c is rotatably mounted on the pin 7b. Therefore, female screw 7c
Is mounted so as to be rotatable in a direction orthogonal to the axial direction of the male screw 7a. The fixing bolt 7 is formed with a length corresponding to the minimum thickness dimension of each ring 2, 3. Therefore, when each ring 2, 3 is rotated, when fixing the lid receiving frame 5, The length may be insufficient.

In such a case, it is preferable to use the connecting bolt 8 shown in FIG. This connecting bolt 8 has a male thread at one end
8a, the female screw 8b is formed at the other end, and the male screw 8a is screwed into the female screw 7c of the fixing bolt 7 to extend the fixing bolt 7 to a predetermined length. I can do it.

In this embodiment, three fixing bolts 7 are provided,
A male screw 9 is screwed into these fixing bolts 7 or a male screw 9 is connected to the fixing bolt 7 via a connecting bolt 8 so that the rings 2 and 3 and the lid receiving frame 5 can be fixed. .

Next, a case will be described in which the lid receiving frame 5 is fixed by the above members so as to match the slope of the ground surface.

First, a fixing bolt 7 to which a nut 7d is attached is screwed into a buried screw 4a buried in the inclined wall tube 4, and the bolt 7 is fixed in a direction capable of rotating toward the center of the manhole. Next, the inclined surface 2b of the lower ring 2 is placed on the inclined wall pipe 4 so as to correspond to the inclination direction of the ground surface. At this time, the fixing bolt 7 is fitted into the elongated hole 6 of the lower ring 2. Next, the upper ring 3 is placed on the lower ring 2 and the horizontal surface 3b of the upper ring 3 is placed.
The ring 3 is adjusted by rotating the ring 3 so as to match the gradient of the ground surface.

When the horizontal surface 3b of the upper ring 3 matches the slope of the ground surface, the lid receiving frame 5 is placed on the ring 3 and the fixing bolt 7
A connecting screw 8 or a male screw 9 is screwed into the nut, and a nut 10 is used to connect the lid receiving frame 5, the upper ring 3 and the lower ring 2 to the oblique tube wall 4.
Fixed to At this time, the elongated holes 6 formed in the rings 2 and 3
Since the width of the fixing bolt 7 is formed sufficiently larger than the diameter of the fixing bolt 7, the fixing bolt 7 does not contact the wall surface of the elongated hole 6, and therefore, bending stress or the like acts on the fixing bolt 7. There is no.

In the above embodiment, the adjustment ring 1 is replaced with two rings.
The case where the number of rings has been described with reference to 2 and 3 has been described, but it goes without saying that more rings than this number may be used.

<Effects of the Invention> As described above in detail, according to the fixing structure of the adjusting ring in the assembly manhole of the present invention, by rotating a plurality of rings each having a sloped surface on one surface,
The slope angle of the surface of the other ring can be adjusted steplessly with respect to the surface of one ring, and the male screw and the female screw are orthogonal to each other in the axial direction in a plurality of elongated holes formed on the circumference To fix these rings firmly in a stable state by inserting a fixing bolt that can rotate in the direction, screwing the male screw of the fixing bolt into the buried bolt embedded in the inclined wall tube and fastening it Can be done. Therefore, unlike the prior art, there is no need to provide an adjustment washer in accordance with the gradient of the ground surface, and there is no need to fill the gap between the height adjustment ring and the lid receiving frame with mortar or concrete. Therefore, the construction period can be shortened and the cost can be reduced.

Further, since the fixing bolt is constituted by the female screw rotatably mounted on the male screw, by rotating a plurality of rings constituting the adjusting ring, even if the axes of these rings intersect, these rings are not rotated. And the lid receiving frame can be easily and reliably fixed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory sectional view of an adjusting ring, FIG. 2 is an explanatory front view, FIGS. 3 (A) and (B) are explanatory views of a ring constituting the adjusting ring, and FIG. (A) and (B) are illustrations for adjusting a gradient angle, FIG. 5 is an illustration of a fixing bolt, FIG. 6 is an illustration of a connecting bolt, and FIG. 7 is an illustration of a conventional technique. 1 is an adjustment ring, 2 is a lower ring, 2a.3b is a horizontal plane, 2b,
3a is a slope surface, 3 is an upper ring, 4 is a slope wall tube, 5 is a lid receiving frame, 6 is a long hole, 7 is a fixing bolt, 7a is a male screw, 7b is a pin, 7c is a female screw, and 8 is a connection bolt. is there.

Claims (2)

(57) [Claims] 1. A structure for fixing an adjusting ring in an assembling manhole constituted by sequentially stacking a building block, a straight wall pipe, a sloping wall pipe, an adjusting ring, a lid receiving frame and a lid. An adjusting ring formed by combining a plurality of rings having a plurality of elongated holes formed on the circumference is placed above the inclined wall tube, and is turned in a direction orthogonal to the axial direction of the male screw and the male screw. A fixing bolt having a female screw movably mounted is screwed into a buried screw buried in the inclined wall tube and inserted into the long hole of the adjusting ring, and a male screw is further fastened to the female screw of the fixing bolt. The fixing structure of the adjusting ring in the assembling manhole, wherein the adjusting ring is fixed to the sloping wall pipe by the above. 2. A fixing bolt for fixing an adjusting ring of an assembling manhole to a swash wall pipe, comprising a male screw screwed into a buried screw buried in the swash wall pipe, and having an axial direction of the male screw. A fixing bolt comprising a female screw mounted rotatably in a direction perpendicular to the fixing bolt.