JP3321765B2 - Manhole cover frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole cover receiving frame for an underground structure such as a manhole for water supply and sewerage and a manhole structure for a fire hydrant.

[0002]

2. Description of the Related Art When constructing a manhole for water supply and sewerage or a manhole for a fire hydrant, the upper surface of the manhole cover often does not coincide with the inclination of the road surface. In such a case,
Conventionally, an adjusting ring is inserted between the manhole cover receiving frame and the manhole side mass, or an appropriate number of height adjusting bolts are provided on the flange of the manhole cover receiving frame to provide a manhole cover receiving frame. After the top of the manhole cover is adjusted to the slope of the road surface, a quick-drying filler is injected between the lower surface of the manhole cover receiving frame and the manhole side lump to adjust the top of the manhole cover to the slope of the road surface. Since the inclination angle adjustment work requires a lot of extra work, the appearance of a structure and means capable of performing the adjustment work in a short time has been desired.

In response to this demand, the present inventor has proposed a lid receiving frame having an outer diameter slightly smaller than an inner diameter of an upper edge of the outer cylindrical body in an outer cylindrical body provided with a receiving seat at an inner lower portion. When a manhole cover receiving frame is constructed in which a body is installed and the cover receiving frame is lifted and lowered by a jack bolt provided on the seat, and the cover receiving frame is adjusted to the inclination of the road surface, the cover receiving frame is used. It has been devised to cope with this problem by appropriately stacking a raising adjustment ring (height adjusting ring) at an appropriate number of positions between the outer cylinders, but there is a problem that the contact between the lid receiving frame and the raising adjustment ring does not become smooth. Was.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a manhole cover receiving frame having a structure in which, when the cover receiving frame is adjusted to the inclination of the road surface, the position of the cover is more stably than that of the conventional structure. It is assumed that.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 has a receiving seat at an inner lower portion and an appropriate number of nuts inserted into a lateral hole storage portion. An outer cylinder body provided with a stud hole for bolting, and an upper rim protruding inward, and an outer diameter provided on the seat of the outer cylinder body is slightly smaller than an inner diameter of an upper rim of the outer cylinder body. Small outer diameter,
A cover receiving frame body provided with a head engaging portion of a bifurcated jack bolt at an appropriate number of positions inside, and screwed to the nut through the head engaging portion and the stupid hole; A jack bolt fitted with a stopper that engages the lower surface of the portion, and a receiving piece is disposed between the lid receiving frame and the receiving seat of the outer cylindrical body, and an upper surface of the receiving piece and a lower surface of the lid receiving frame are provided. A spherical joint is provided between the seats or between the lower surface of the seat piece and the seat of the outer cylinder.

According to the second aspect of the present invention, a receiving seat and an appropriate number of bolt holes for inserting nuts into the lateral hole storage portion are provided at the lower portion on the inner side, and the outer edge having the upper edge protruded inward is provided. A cylindrical body, an outer diameter of the outer cylindrical body provided on the seat is slightly smaller than an inner diameter of an upper rim of the outer cylindrical body, and a bifurcated jack bolt is provided at an appropriate number of inner positions. A jack receiving bolt provided with a lid receiving frame provided with the head engaging portion, and a stopper screwed to the nut through the head engaging portion and the stupid hole and engaged with a lower surface of the head engaging portion. And a receiving piece is disposed between the lid receiving frame and the receiving part of the outer cylinder so as to overlap each other, and a spherical joint is provided between the receiving pieces.

[0007]

When the lid receiving frame is tilted, the lower surface of the receiving plate and the lid receiving frame, the lower surface of the receiving plate and the receiving seat of the outer cylinder or between the receiving pieces arranged in an overlapping manner are spherically joined. But it sits better and more stable than one without the seat.

[0008]

1 to 7 show an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a front view, FIG. 3 is a plan view of a lid receiving frame, and FIG. FIG. 5 is an enlarged view of a spacer for adjusting the raising of the line AA, and FIG.
(B) FIG. 6 is a front view of the same, and FIG.
(A) is a plan view, and (b) is a front view. FIG. 7 is an enlarged view of the receiving piece, and FIG.
(B) is a plan view, and (c) is a plan view of a different embodiment of the receiving piece.

In FIG. 1, reference numeral 1 denotes a jack bolt mounting portion 5 provided with a manhole-side lump mounting flange 2 on the outside, a receiving seat 3 on a lower portion on the inside, and a stupid hole 4 at three places.
5 and the side hole storage portion 6 through the stupid hole 4.
To the nut 7 inserted into the jack bolt 8,
The outer cylindrical body is formed by screwing the upper and lower portions 8 and 8 and projecting the upper lip 9 inward.

Reference numeral 10 denotes a lid receiving frame body having an outer diameter slightly smaller than the inner diameter of the upper rim 9 of the outer cylindrical body 1 provided on the receiving seat 3 in the outer cylindrical body 1. Bifurcated head engaging portion 11 for engaging jack bolt 8 and base portion 1
1 'are provided in two stages as shown in FIG. The base 11 'is not necessarily required in terms of function, and may be omitted.

Reference numeral 12 denotes a stopper comprising washers 13, 14 and a nut 15. The washer 13 and the nut 15 are firmly attached to the jack bolt 8 so as not to move in the axial direction even when the jack bolt 8 is rotated. The members constituting the stopper 12 which are tightened are provided so as to be located between the head engaging portion 11 and the base portion 11 'provided in two steps. Reference numeral 16 denotes a washer provided under the bolt head.

Reference numeral 17 denotes a seat 3 for the outer cylinder 1 and a lid receiving frame 1.
A spacer for adjusting the height of the bolt inserted between 0 and is formed as shown in FIG. 5, and has a hook-shaped portion 17a to be engaged with the jack bolt 8.

Numeral 18 designates a spacer for fine adjustment of raising.
The arm 17b of the raising adjustment spacer 17 is cut into a shape as shown in FIG.

Reference numeral 19 denotes a seating piece provided between the lid receiving frame 10 and the fine adjustment spacer 18 or the raising adjustment spacer 17, and has a structure that makes spherical contact with the lid receiving frame 10.

In the embodiment illustrated in FIG. 4, the lid receiving frame 10
7, a concave surface P is provided on the lower surface of the seat, and the upper surface of the receiving piece 19 is formed as a convex surface Q engaging with the concave surface P as shown in FIG. Notch 19a so as to form a hook. Needless to say, a snake-like shape may be used as shown in FIG.

The assembly procedure of this embodiment will be described.
First, jack bolts 8, 8, 8 with washers 16 and stoppers 12 are engaged with the head engaging portion 11 and the base portion 11 'at three places of the lid receiving frame 10, and then the lid receiving frame 10 is removed. Lower into the outer cylinder 1 and screw the jack bolts 8, 8, 8 to the respective nuts 7, and a suitable number of spacers for raising the height -1
7 and the spacer 18 for fine adjustment of the raising and the seating piece 19 are mounted according to the situation at the site.

Next, the steps of raising and lowering the height of the manhole cover receiving frame and adjusting the inclination angle of the manhole cover (not shown) according to the present invention will be described.

First, the procedure of raising and lowering the work will be described. In the case of raising, in FIGS. 1 and 4, the bolts 8, 8, 8 for jacks are turned to raise the upper surface of the lid receiving frame body 10. The spacers are inserted according to the situation at the site according to the situation at the site, and the bolts 8, 8, 8 are tightened when the raising is completed. To fix the lid receiving frame 10.

On the other hand, at the time of lowering work, first, bolts 8 and
After rotating the lid 8 in the reverse direction to raise the lid receiving frame 10, the unnecessary spacers are removed, and then, the lid receiving frame 10 is lowered by rotating forward and the lid receiving frame 10 is aligned with the road surface. A required spacer is inserted under 10 and bolts 8 are tightened and fixed.

With the conventional structure, as described above, it was necessary to dig the surrounding asphalt road surface before raising and lowering the work. However, in the case of the present invention, there is no need to dig the asphalt road surface. The lid receiving frame 10 can be easily raised and lowered by rotating the 8, 8 and a simple operation of filling the gap formed between the lid receiving frame 10 and the asphalt road surface with a coking material after the work is completed. When the construction is completed, the construction period can be completed in a short time of several tens of minutes or several hours.

Next, the procedure for adjusting the inclination angle will be described. The procedure is the same as the above-described raising and lowering work. In this case, the upper surface of the lid receiving frame 10, that is, the upper surface of the manhole cover is inclined on the road surface. It is sufficient to operate the bolts 8, 8, 8 so as to match.

In the embodiment, in the case of a normal 650 mm manhole, the height of the outer cylinder 1 is 110 mm, the gap between the upper edge 9 of the outer cylinder 1 and the lid receiving frame 10 is 8 mm, and the height of the outer cylinder 1 is 8 mm. When the gap between the inner surface of the body and the outer peripheral surface of the lid receiver 10 is 3 mm, the inclination can be changed from 0 ° to about 8 °. In the illustrated embodiment, the jack bolt 8 and the nut 7 are used. Is tilted according to the tilt, and by adjusting the number of spacers 17 for raising adjustment and spacers 18 for fine adjustment of raising, the lid receiving frame 10 can be firmly fixed at the tilted position, It was sufficiently practical.

FIG. 8 shows a different embodiment. In this case, the upper surface of the receiving piece 19 'is a concave surface P, and the lid receiving frame 10 side is a convex surface Q engaging with the concave surface P. The effect is the same as that of the embodiment.

FIG. 9 shows still another embodiment. In this case, two receiving pieces 191 and 192 are used, and the concave face P or the concave face P is directly provided on the lid receiving frame 10 as in the above-described embodiment. The concave surface P and the convex surface Q are provided on the receiving pieces 191 and 192 without providing the convex surface Q to form a spherical joint, and the same effect can be obtained in this case as well.

Further, as will be easily understood from the above description, although not shown here, a receiving piece (which may be a spacer for adjusting the height) which is provided on the receiving seat 3 of the outer cylindrical body 1 may be used. It is obvious that a structure in which a spherical joint portion is formed between them may be adopted.

[0026]

As described above, the man-housing according to the present invention is described.
Since the height of the lid cover frame and the adjustment of the inclination angle can be easily adjusted from the top by operating the jack bolt 8, the conventional technique can raise and lower the work and adjust the inclination angle. This has the effect of being able to be shortened as much as possible, and is practically superior as the structure of the manhole cover receiving frame.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment of the present invention.

FIG. 3 is a plan view of a lid receiving frame according to the embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIGS. 5A and 5B are enlarged views of a spacer for raising the height in an embodiment of the present invention, wherein FIG. 5A is a plan view and FIG.

FIGS. 6A and 6B are enlarged views of a raising adjustment spacer according to the embodiment of the present invention, wherein FIG. 6A is a plan view and FIG.

FIGS. 7A and 7B are enlarged views of a receiving piece in the embodiment of the present invention, wherein FIG. 7A is a front view, FIG. 7B is a plan view, and FIG. 7C is a plan view of a different receiving piece.

FIG. 8 is a longitudinal sectional view of another embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of another different embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Flange 3 Receiving seat 4 Stupid hole 5 Attachment part 6 Side hole storage part 7, 15 Nut 8 Jack bolt 9 Upper rim 10 Cover receiving frame 11 Head engaging part 11 'Base part 12 Stopper 13, 14, 16 Washer 17 Spacer for height adjustment 18 Spacer for fine adjustment of height 19 Receiving piece

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 29/12

Claims (2)

(57) [Claims] An outer cylinder body provided with a receiving seat at an inner lower portion, an appropriate number of bolt stud holes in which nuts are inserted into a lateral hole storage portion, and an upper edge protruding inward; The outer diameter of the inside of the seat is slightly smaller than the inner diameter of the upper edge of the outer cylindrical body, and a head engaging portion of a bifurcated jack bolt is provided at an appropriate number of locations inside. A cover receiving frame, a jack bolt screwed into the nut through the head engaging portion and the stupid hole, and a stopper attached to engage with a lower surface of the head engaging portion. A receiving piece is arranged between the receiving frame and the seat of the outer cylinder, and a spherical joint is provided between the upper surface of the receiving piece and the lower face of the lid receiving frame or between the lower face of the receiving piece and the receiving seat of the outer cylinder. A manhole cover receiving frame. 2. An outer cylindrical body having a receiving seat at an inner lower portion, an appropriate number of bolt holes for inserting a nut into a lateral hole storage portion, and an upper edge protruding inward. The outer diameter of the inside of the seat is slightly smaller than the inner diameter of the upper edge of the outer cylindrical body, and a head engaging portion of a bifurcated jack bolt is provided at an appropriate number of locations inside. A cover receiving frame, a jack bolt screwed into the nut through the head engaging portion and the stupid hole, and a stopper attached to engage with a lower surface of the head engaging portion. A manhole cover receiving frame, wherein a receiving piece is overlapped between a receiving frame and an outer cylindrical body, and a spherical joint is provided between the receiving pieces.