JP2000087376A - Manhole cover receiving frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To speed up work by providing a bolt screwing attaching part for a jack on the outside of a body, and providing a substantially vertical outer wall of the same height as the upper face of the body on the outside. SOLUTION: A rubber plug or the like fitted to an insertion hole 5 and a screw hole 6 is removed during the replacement or raising of a manhole cover receiving frame, and after a nut 10 is removed, a bolt for a jack 13 is screwed in a screw hole 6. Thus, a body 1 is simply removed. Next, an additional spacer is overlapped on an existing spacer 11, and after the height of the body 1 is set, the bolt 13 is removed to fill the gap of the lower face of the body 1 with a mortar again. During the raising, the body 1 is removed from a pavement face by the bolt 13, a part or the whole of the mortar 12 is removed, and the spacer 11 is adjusted to mount the body 1 again so as to fill the gap with the mortar again. Thereby the body 1 can be lifted and lowered without using a large-scaled instrument.

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.

[0002]

2. Description of the Related Art Heretofore, a manhole cover receiving frame has been provided with a flange at a lower portion of the outside of a main body, and this is fixed to an adjusting ring or a slope wall. For this reason, when paving, the flange is buried with pavement such as asphalt. There was a problem that the upper pavement was destroyed and removed, and after the adjustment work was completed, the backfill work had to be performed.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a manhole cover receiving frame which can solve the above-mentioned problems and can easily raise and lower the manhole cover receiving frame. It is.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is to provide a jack bolt mounting portion on the outside of a main body and the jack. A substantially vertical outer wall having the same height as the upper surface of the main body is provided on the outer side of the bolt screw attachment portion.

According to a second aspect of the present invention, a substantially vertical outer wall having the same height as the upper surface of the main body is provided on an outer edge of a mounting base provided outside the main body, and a hook hook of a lifting device is provided on the main body. It is a thing.

[0006]

According to the present invention, since a part of the manhole cover receiving frame is not buried by the pavement, the jackhole bolt or the lifting device is used after construction, so that the manhole cover receiving frame can be easily removed without destroying the pavement. Replacement or raising and lowering can be adjusted, and there is no backfilling operation after the adjustment operation, so that the construction can be speeded up.

[0007]

FIG. 1 is a plan view of a manhole cover receiving frame main body 1 with a cover removed according to a first embodiment of the present invention.
1 is an AA line sectional view of FIG. 1, FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1, and FIG. 4 is an enlarged sectional view taken along line CC of FIG.

In FIG. 1 to FIG. 4, the main body 1 is provided with a substantially vertical outer wall 3 having the same height as the upper surface of the main body 1 on the outer edge of a mounting base 2 (jack bolt screw mounting portion) provided outside. In addition, insertion holes 5 for anchor bolts 4 are provided at six locations, screw holes 6 for jack bolts are provided near three insertion holes 5, and rib / partitioning walls 7 are provided.

Then, as shown in FIG. 2, for example, the anchor bolt 4 provided on the adjusting ring 9 installed on the inclined wall 8 is passed through the insertion hole 5 and fixed with the nut 10.
11 is a spacer for adjusting the height and the inclination angle, and 12 is a mortar for filling a gap between the manhole cover receiving frame and the adjusting ring.

A U comprising a main body 1, an outer wall 3, and a mounting base 2
As for the groove, the portion having the insertion hole 5 and the screw hole 6 is fitted with a rubber stopper or the like which can be detached when raising or lowering the height, and the other grooves are filled with concrete or asphalt.

Since the manhole cover receiving frame needs to be replaced or raised after the manhole is set up, the rubber stopper fitted to the portion provided in the insertion hole 5 and the screw hole 6 is removed. If the jack bolt 13 is screwed into the screw hole 6 after the nut 10 is removed, the main body 1 can be easily raised or removed without cutting (non-cutting) the pavement as in the related art. Therefore, the additional spacer is stacked on the existing spacer 11 to set the height of the main body 1, then the bolt 13 for the jack is removed, and the gap formed on the lower surface of the main body 1 is refilled with mortar to fill the gap. Complete.

In the case of lowering the height, the jack bolt 1
3, the main body 1 is completely removed from the paved surface,
May be removed, the spacer 11 may be adjusted, the main body 1 may be mounted again, and the gap may be refilled with mortar.

FIGS. 5 (a) and 5 (b) show another embodiment of a screw hole for mounting a jack bolt, and a hole 1 into which nuts 14 and 14 'can be inserted into a mounting base 2 from a side surface.
The screw holes are provided by providing 5, 15 '. In this case, since the nuts 14 and 14 ′ can be removed, there is no fear that the nuts 14 and 14 ′ cannot be used due to corrosion due to being left by removing them except when raising or lowering them, and even if the screw holes are broken, they can be replaced.

FIGS. 6 and 7 show another embodiment of the present invention. In the embodiment of FIG. 6, the upper surface other than the insertion hole 5 and the screw hole 6 is closed, and the inside is hollowed to reduce the weight. It is what it was. The embodiment of FIG. 7 is an embodiment in which the mounting base other than the insertion hole 5 and the screw hole 6 is removed.

In the embodiment described above, the jack bolt screw attachment portion is provided on the attachment base 2.
It goes without saying that this arrangement is not necessary as long as it is between the outer wall 3 and the main body 1.

FIG. 8 is an enlarged sectional view of a main part of an embodiment in which a jack bolt screw mounting portion is provided in a portion other than the mounting base. The jack is directly above an insertion hole 5 provided in the mounting base 2. A screw bolt mounting portion 16 is provided, and the jack bolt 13 is screwed into the screw hole 6 for jack bolt. According to this embodiment, it is possible to reduce the size of the rubber plug and reduce the trouble of screwing the jack bolt into the deep screwing position. In this case, the mounting base 2 can be omitted.

FIG. 9 shows an embodiment of the second aspect of the present invention, in which a hook 17 is provided instead of providing a screw hole for mounting a jack bolt, and a wire is attached to the hook 17, and a crane or Japanese Patent Application Laid-Open No. The jack can be moved up and down by a jack as disclosed in Japanese Patent Publication No. 315787.

[0018]

As described above, since the surface in contact with the pavement is substantially vertical, the manhole cover receiving frame main body 1 can be moved up and down without destroying and removing the pavement surface. For example, the manhole cover receiving frame main body 1 can be moved up and down only by the jack bolts 13 without using a large-scale instrument. In addition, the manhole cover receiving frame body 1 that moves up and down
Since there is no elevating projection or the like inside the, there is an advantage without reducing the effective inner diameter unlike the case where an elevating device is provided inside.

[Brief description of the drawings]

FIG. 1 is a plan view of a manhole cover receiving frame with a manhole cover removed according to the first embodiment of the present invention;

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line CC of FIG. 1;

FIG. 5 is an enlarged sectional view of a screw hole for mounting a jack bolt according to another embodiment.

FIG. 6 is a plan view of a manhole cover receiving frame according to a second embodiment of the present invention with the manhole cover removed.

FIG. 7 is a plan view of a manhole cover receiving frame with the manhole cover removed according to the third embodiment of the present invention;

FIG. 8 is a plan view of a manhole cover receiving frame with the manhole cover removed according to the fourth embodiment of the present invention.

FIG. 9 is a plan view of a manhole cover receiving frame with a hook with the manhole cover removed according to the second embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Mounting base 3 Outer wall 4 Anchor bolt 5 Insertion hole 6 Screw hole for jack bolt installation 7 Rib / partition wall 8 Sloping wall 9 Adjustment ring 10 Nut 11 Spacer 12 Mortar 13 Jack bolt 14 Nut 15, 15 'Nut insertion Hole 16 Bolt screw fitting for jack 17 Hook

Claims (2)

[Claims] The invention is characterized in that a jack bolt screw attachment portion is provided outside the main body, and a substantially vertical outer wall having the same height as the upper surface of the main body is provided outside the jack bolt screw attachment portion. Manhole cover receiving frame. 2. A substantially vertical outer wall having the same height as the upper surface of the main body is provided on an outer edge of the mounting base mounted on the outer side of the main body,
A manhole cover receiving frame, wherein a hook hook of a lifting device is provided on the main body.