JPH08302718A - Method and device for adjusting height of ground manhole - Google Patents

Abstract

PURPOSE: To adjust the height and inclination of a cover simply by placing the lower end face of an inner frame seal on the upper end face of an adjust ring for a manhole, putting the internal side face section of the bottom plate of a frame on the upper end face of the inner frame seal and inclining the cover fitted to the frame in an inclined plane by taking advantage of the flexibility and stretchability of the inner frame seal. CONSTITUTION: A bolt 17 is erected to an inclined wall cylinder 15 for a manhole. The upper end section of the bolt 17 is projected from a ring 10. A spring 25 is fitted to the bolt 17. A seal 1 is placed on the ring 10, and the lower end face 1b of the seal is fitted to a recessed surface 11. The bolt 17 is inserted into the through-hole 24 of a frame 20, and a nut 41 is screwed and fixed temporarily. A cover 30 is placed on the frame 20, and the nut 41 is clamped successively. Consequently, the seal 1 adjusts the clamping force of the nut 41, the upper end face 1a of the seal is compressed, and bellows are shrunk. A space 31 is filled with mortar 32. Accordingly, the angles of inclination of the seal 1, the frame 20 and the cover 30 can be adjusted surely and finely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height of a ground manhole for easily adjusting the height of the lid of an underground structure such as a manhole constructed under a road according to the height and inclination of the road surface. The present invention relates to an adjusting method and a height adjusting device.

[0002]

2. Description of the Related Art Conventionally, a plurality of stud bolts are planted on an upper end surface of a lid frame receiving portion formed at a work port which is an entrance and exit of a manhole to the ground, and adjustment is made by screwing these stud bolts. Form a flange for mounting the lid frame for mounting the lid on the nut, and set the mounting hole diameter of the lid frame for inserting the adjustment nut so that a predetermined gap can be obtained with respect to the screw outer diameter of the adjustment nut. A lid height adjusting device for a manhole in which a lid frame is vertically movable by rotating an adjusting nut (Japanese Patent Laid-Open No. 2-28252).
No. 5). However, even if the above-mentioned device tightens a plurality of nuts individually and then loosens these nuts and adjusts the degree of inclination of the lid frame, the tightening force of each nut is not uniform, so that there is a drawback that the tightening of the nuts takes time and effort.

Further, a spacer ring having several locking bolts projecting from it is placed on the upper surface of the inclined wall of the human hole, and a mouth ring device is fitted to the locking bolts via a taper nut. A device for screwing a long nut on the device to fix the upper surface of the mouth ring device to the inclination of the ground (JP-A-61-1).
0633). Even in this device, since each taper nut and long nut are not related to each other,
It takes a long time to adjust and fix the inclination of the mouthpiece device, and there is a drawback that the support of the mouthpiece device by the locking bolt becomes unstable.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, the present invention has a bellows type cylindrical inner frame seal mounted on an upper portion of an adjusting ring mounted on an upper end surface of a manhole slant wall of a manhole. The bellows type cylindrical inner frame seal is arranged with its upper end inclined along the pavement surface of the road, and the super fast hardening non-shrinkable mortar filling space exists outside the bellows type cylindrical inner frame seal. Enclose the frame seal, fill the superframe fast non-shrink mortar between the inner frame seal and the outer frame seal, and project a plurality of anchor bolts at intervals in the inclined hole wall and the adjusting ring, The bottom plate of the frame is supported by the adjustment ring with the coil spring inserted in this anchor bolt, and the super-rapid non-shrink mortar is poured between the inner frame seal and the outer frame seal to tilt the frame along the slope of the pavement. Placed on the upper surface of the cover Put the aims to the opening of the manhole to close in accordance with the inclination of the road surface.

[0005]

According to the present invention, (1) a bellows-type cylindrical inner frame seal 1 is coaxially mounted on the upper end surface of an adjusting ring 10 installed in a manhole to form a bellows-type cylindrical inner frame. A step of placing the bottom plate 21 of the frame 20 on the upper end of the seal 1 and finely adjusting the inclination angle of the upper surface of the cover 30 placed and fitted on the frame 20 by the bellows type cylindrical inner frame seal 1 together with the frame 20. A step of fixing the frame 20 with a plurality of anchor bolts 17 protruding from the adjustment ring 10 in a state where the frame 20 and the cover 30 are inclined, and a bottom plate 21 of the fixed frame 20 and a bellows type cylindrical inner frame. The outer peripheral surface of the seal 1, the upper end surface of the adjustment ring 10, and the frame 20
And a ring-shaped space portion 31 formed by an outer frame seal 35 surrounding the outer peripheral surface of the adjusting ring 10 with a super-rapid hardening non-shrinking mortar 32. Manhole height adjustment method.

(2) The ultra-rapid hardening non-shrink mortar 32 is filled in a ring shape along the outer peripheral surface, the lower end surface is placed on the adjusting ring 10, and the bottom plate 2 of the frame 20 is mounted on the upper end surface.
1. A bellows type cylindrical inner frame seal 1 on which 1 is placed, an outer peripheral surface of the bellows type cylindrical inner frame seal 1 and a bottom plate 2 of the frame 20.
1, the upper end surface of the adjusting ring 10 and the bottom plate 2 of the frame 20
1. A ground including a ring-shaped space portion 31 configured by 1 and a rubber-like outer frame seal 35 that closes the ring-shaped space portion 31 between the outer peripheral surface of the adjustment ring 10 and the outer peripheral surface of the bottom plate 21 of the frame 20. Manhole height adjustment device.

(3) Anchor bolt 1 in which the bottom plate 21 of the frame 20 is passed through the upper end portion projecting from the manhole slant wall tube 15
7, the coil spring 25 is inserted, and the lock nut 41 is screwed from the bottom plate 21 of the frame 20 by providing elasticity between the adjustment ring 10 placed on the sloping wall 15 and the bottom plate 21 of the frame 20. The height adjusting device for a ground manhole according to claim 2. Is.

[0008]

The lower end surface of the elastic bellows type cylindrical inner frame seal 1 is placed on the upper end surface of the manhole adjusting ring 10, and the inner side surface portion of the bottom plate 21 of the frame 20 is placed on the upper end surface of the inner frame seal 1. Then, the cover fitted and mounted on the upper surface of the frame 20 is inclined along the inclined surface of the road due to the flexibility of the bellows type cylindrical inner frame seal 1 and the elasticity in the vertical direction.

The lock nut 41 is screwed to the anchor bolt 17 by utilizing the elasticity of the coil springs 25 inserted into the plurality of anchor bolts 17 that are planted at intervals in the swash wall 15, and the bellows type inner frame seal 1 , Frame 2
0 and the cover 30 are tilted along the tilted surface of the pavement. The outer peripheral surfaces of the adjusting ring 10 and the frame 20 are covered with an annular elastic outer frame seal 35 to form a ring-shaped space portion 31, and the ring-shaped space portion 31 is provided with a super-hard hardening non-shrink mortar 3
2 is poured from the measuring cup 33 with the funnel 34 and cured.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a state in which super-rapid hardening non-shrink mortar is filled between a frame whose height is adjusted and an adjustment ring,
2 is an enlarged perspective view of a bellows type cylindrical inner frame seal, FIG. 3 is an enlarged perspective view of an elastic outer frame seal, FIG. 4 is a plan view of a coil spring inserted into an anchor bolt and fitted, and FIG. 5 is a coil spring. FIG. 6 is another side view of the coil spring.

In FIG. 1, reference numeral 1 denotes an embedded bellows type cylindrical inner frame seal made of rubber, plastic or the like having an elasticity, and its inner diameter is substantially the same as the inner diameter of the adjusting ring 10. Since the inner frame seal 1 is placed on the concave surface 11 inside the upper part of the adjusting ring 10, the inner frame seal 1 and the adjusting ring 10
The central axis of does not deviate. Since the inner lower surface convex portion 12 of the adjusting ring 10 is fitted into the upper face pan portion 16 of the human-hole slanting wall cylinder 15, the adjusting ring 10 and the human-hole slanting wall mounted on the human-hole slanting wall cylinder 15 are fitted. The central axis of the wall cylinder 15 does not shift.

Reference numeral 17 denotes a plurality of anchor bolts penetrating the adjusting ring 10 and being embedded in the inclined wall cylinder 15 for human holes at a certain interval. In the embodiment, three anchor bolts are provided at equal intervals and three anchor bolts are provided. Anchor bolts have been planted. Reference numeral 20 denotes a frame, the cross-sectional shape of which is formed into an inverted T-shaped frame by the bottom plate 21 and the rising portion 22. A hole 24 is formed in the outer side of the bottom plate 21 to allow the upper end of the anchor bolt 17 to pass therethrough.
There is.

Reference numeral 25 is a coil spring for holding the state where the inclination of the frame 20 is adjusted. Inserting portions 26 and 27 are formed at the upper and lower ends of the coil spring, respectively, and the winding portion is provided as shown in FIG. 26 and 27 are fitted to the anchor bolt 17 and pressed in a direction in which they approach each other, and are mounted between the upper end surface of the adjustment ring 10 and the bottom plate 21 of the frame 20. Inner bottom surface portion 21 of the bottom plate 21 of the frame 20
A is in contact with the upper end surface 1a of the bellows-type cylindrical inner frame seal 1 over the entire peripheral surface.

The bottom plate 21 of the frame 20 and the upper end surface 1a of the bellows type cylindrical inner frame seal 1 may be temporarily fixed by means such as fitting during assembly. Further, the lower end surface 1b of the bellows type cylindrical inner frame seal 1 is placed in the concave portion 28 inside the upper part of the adjusting ring 10 and the adjusting ring 10 and the frame 20 are stacked via the bellows type cylindrical inner frame seal 1. Stabilize the state. Reference numeral 30 denotes a cover in which the outer peripheral inclined surface 30a is fitted and mounted on the inner peripheral inclined surface 20a of the frame 20.
Like the frame 20, the upper surface of is inclined and arranged along the inclined surface of the pavement.

Reference numeral 31 denotes a ring-shaped space for filling the super-rapid hardening non-shrink mortar 32 between the upper end surface of the adjusting ring 10 and the bottom plate 21 of the frame 20, and 35 denotes the adjusting ring 10.
And a rubber-like elastic outer frame seal which is laid over the outer peripheral surface of the bottom plate 21 of the frame 20.

Reference numeral 24 is a through hole for inserting an anchor bolt and a funnel opened at equal intervals in the bottom plate 21 of the frame 20, and in the through hole 24 at the highest position of the inclined frame 20 as shown in FIG. The funnel 34 for filling the ring-shaped space 31 is inserted, and the ultra-high-speed hard non-shrink mortar 32 is poured into the funnel 34 by the measuring cup 33. Therefore, the ultra high-speed hard non-shrink mortar 32 injected into the ring-shaped space 31 through the funnel 34 in the measuring cup 33 flows and is evenly filled in the ring-shaped space 31.

Next, the operation of adjusting the upper surface of the cover 30 to the inclined surface of the pavement and inclining it will be described. 600mm as an example
When adjusting the height of the φ ground manhole, as described above, the three anchor bolts 17 are planted in the sloping wall 15 at equal intervals, and the upper ends of the anchor bolts 17 are respectively adjusted.
Projected above 0. Then, the coil springs 25 are fitted to the anchor bolts 17, respectively.

Next, the bellows type cylindrical inner frame seal 1 is placed on the upper surface of the adjustment ring 10, and the lower end surface 1b of the bellows type cylindrical inner frame seal 1 is fitted to the concave surface 11 inside the upper part of the adjustment ring 10. . Next, attach the coil spring 2 to each anchor bolt 17.
Insert the holes 24 of the bottom plate 21 of the frame 20 into the anchor bolts 17 from above 5, and attach the washers 4 to the anchor bolts 17.
The lock nut 41 is screwed and temporarily fixed via 0.

Next, the cover 30 is placed on the frame 20. When the lock nuts 41 of the anchor bolts 17 are sequentially tightened in the cover 30, the bellows-type cylindrical inner frame seal 1 has elasticity, so when the tightening force of the lock nuts 41 is adjusted, the lock nuts are locked as shown in FIG. The upper surface portion 1a of the bellows-type cylindrical inner frame seal 1 on the side on which 41 is strongly tightened is strongly compressed, and the bellows is contracted and lowered.

The height of the bellows-type cylindrical inner frame seal 1 on the side where the lock nut 41 is weakly tightened is higher than the other portions. When the lock nut 41 of the anchor bolt 17 is tightened to the middle position, the height of the bellows-type cylindrical inner frame seal 1 is reduced by that much.

In this way, the lock nuts 41 of the anchor bolts 17 are tightened to the required height against the elastic force of the coil springs 25, whereby the lock nuts 41 are locked.
Thus, the adjustment ring 10 and the frame 20 are stably tightened and fixed with the cover 30 having an inclination.

Next, the measured and adjusted ultra-fast hardening non-shrink mortar 32 is poured from the measuring cup 33 into the funnel 34 inserted into the through hole 24 into which the anchor bolt and the funnel of the bottom plate 21 of the frame 20 are inserted, and then into the ring-shaped space 31. Fill. Filcon S as an example of ultra-fast hardening non-shrink mortar
The premix type (a product of Sumitomo Osaka Cement Co., Ltd.) was used. After the ultra-fast curing non-shrink mortar 32 is hardened, the outer frame seal 35 having rubber-like elasticity is removed from the adjusting ring 10 and the frame 20.

[0023]

According to the present invention, as described above, the adjusting ring 10 is used.
The lower end surface of the elastic bellows-type cylindrical inner frame seal 1 is placed above the inner surface of the cover, and the inner side surface portion of the bottom plate 21 of the frame 20 is placed on the upper end surface of the inner frame seal 1.
When arranging the manhole cover with its upper surface aligned with the inclination of the pavement and arranging the manhole cover, the inclination angles of the bellows-type cylindrical inner frame seal 1, the frame 20, and the cover 30 can be surely and finely adjusted.

The bellows type cylindrical inner frame seal 1 is a cover 30.
It is very easy to maintain the manhole without disturbing it even if it is attached to or removed from the manhole, and the frame 2 mounted on the bellows type cylindrical inner frame seal 1 is used.
The inclination of 0 can be finely adjusted and attached to the adjusting ring 10. Also, the anchor bolt 17 and the lock nut 4
The frame 20 can be fixed to the adjustment ring 10 and the human-hole slanted wall cylinder 15 with a predetermined inclination by using 1.

Further, the outer peripheral surface of the ring-shaped space portion 31 constituted by the outer peripheral surface of the frame 20, the outer peripheral surface of the bellows type cylindrical inner frame seal 1 and the upper end surface of the adjusting ring 10 serves as an elastic outer frame seal. It is possible to easily fill the ring-shaped space portion 31 with the ultrafast rapid non-shrink mortar that is surrounded and weighed.
Then, after the super rapid hardening non-shrink mortar is hardened, the elastic outer frame seal 35 can be easily pulled out from the outer peripheral surface of the mortar filled in the ring-shaped space, and it can be used again for another new manhole. Play.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view illustrating a height adjusting method for a ground manhole according to the present invention.

FIG. 2 is an enlarged perspective view of a bellows-type cylindrical inner frame seal.

FIG. 3 is an enlarged perspective view of an outer frame seal.

FIG. 4 is a side view of a coil spring wound around and fitted to an anchor bolt.

FIG. 5 is a front view of a coil spring.

FIG. 6 is another side view of the coil spring.

[Explanation of symbols]

 1 Bellows type cylindrical inner frame seal 1a Upper end face of inner frame seal 1b Lower end face of inner frame seal 10 Adjustment ring 11 Concave face of adjustment ring 12 Convex part of adjustment ring 15 Sloping wall cylinder 16 Saucepan part 17 Anchor bolt 20 Frame 20a Frame inner peripheral inclined surface 21 Frame bottom plate 22 Frame rising portion 24 Through hole for inserting anchor bolt and funnel 25 Coil spring 26, 27 Coil spring insertion portion 30 Cover 30a Cover outer peripheral inclined surface 31 Ring-shaped space 32 Ultra-rapid non-shrink mortar 33 Measuring cup 34 Funnel 35 Elastic outer frame seal 40 Anchor bolt washer 41 Lock nut

Claims (3)

[Claims] 1. An adjusting ring 1 installed in a manhole.
The bellows-type cylindrical inner frame seal 1 is coaxially placed on the upper end surface of the frame 0, and the frame 20 is attached to the upper end of the bellows-type cylindrical inner frame seal 1.
The step of finely adjusting the inclination angle of the upper surface of the cover 30 on which the bottom plate 21 of the above is placed and fitted to the frame 20 by the bellows type cylindrical inner frame seal 1 together with the frame 20;
And a step of fixing the frame 20 with a plurality of anchor bolts 17 protruding from the adjustment ring 10 in a state where the cover 30 is inclined, and a bottom plate 21 of the fixed frame 20 and the bellows type cylindrical inner frame seal 1 are fixed. A super-fast hardening non-shrinking mortar 32 is filled in a ring-shaped space 31 formed by the outer peripheral surface, the upper end surface of the adjusting ring 10, the outer peripheral surface of the frame 20, and the outer frame seal 35 surrounding the outer peripheral surface of the adjusting ring 10. A method of adjusting the height of a ground manhole, which comprises the steps of: 2. A bellows which is filled with a super-hardening non-shrinkable mortar 32 in a ring shape along the outer peripheral surface and has a lower end surface mounted on the adjusting ring 10 and a bottom plate 21 of the frame 20 mounted on the upper end surface. Type cylindrical inner frame seal 1, the outer peripheral surface of the bellows type cylindrical inner frame seal 1 and the bottom plate 21 of the frame 20.
And the upper end surface of the adjusting ring 10 and the bottom plate 21 of the frame 20.
A ring-shaped space portion 31 constituted by and an adjustment ring 1
A height adjusting device for a ground manhole including a rubber-like outer frame seal 35 that closes a ring-shaped space portion 31 between the outer peripheral surface of 0 and the outer peripheral surface of the bottom plate 21 of the frame 20. 3. The frame 2 is provided with an upper end portion projecting from the inclined wall 15.
On the bottom plate 21 of the frame 20, the coil spring 25 is inserted into the anchor bolt 17 penetrating the bottom plate 21 of 0, and the space between the adjustment ring 10 placed on the slant wall 15 and the bottom plate 21 of the frame 20 is made elastic. More lock nut 41
The height adjusting device for a ground manhole according to claim 2, wherein the height adjusting device is a screw.