JP2003184114A - Level adjuster of underground structure holding frame and underground structure cover equipped with the lever adjuster - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a level adjuster of an underground structure holding frame capable of easily adjusting a setting level of the holding frame by operation from above without using a plurality of members. <P>SOLUTION: In the level adjuster 4 of the underground structure holding frame equipped with a level adjusting block 41 supporting the holding frame 1 forming an anchor bolt hole 12 inserting an anchor bolt 3 erected on a side lump 2 of an underground structure therein on a flange 11 thereof from below by screwing to the anchor bolt 3, the level adjusting block 41 comprises a supporting section 41a for supporting the holding frame 1 from below and a projecting section 41b formed in a rotatable shape inside of the anchor bolt hole 12 by projecting into the upper part of the supporting section 41. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a level adjusting device for an underground structure receiving frame for adjusting the installation level thereof when fixing the receiving frame of the underground structure lid on the underground structure, and its level adjustment. The present invention relates to a lid for an underground structure equipped with a device.

The term "cover for underground structure" used in the present specification refers to a manhole cover, a large iron cover, a sewage cover that closes an opening through an underground buried object in a sewer, an underground structure facility or the like and the ground. , An openable / closable joint lid that protects underground facility equipment and underground cables in electric power / communication, an iron lid for power transmission, an iron lid for distribution, a buried conduit under the road surface in water supply and gas pipes, and its ancillary equipment and ground. A generic term for a fire hydrant lid, a water control valve lid, a sluice valve lid, an air valve lid, a gas pipe lid, a water meter lid, etc.

[0003]

2. Description of the Related Art Heretofore, as a level adjusting device for a receiving frame for an underground structure, a height adjusting device as described in JP-A-10-121501 has been known. This device consists of a spacer that is inserted between the lower frame and the flange of the receiving frame that is fixed by anchor bolts, and a height adjusting bolt that raises and lowers both the spacer and the receiving frame. It has a screw hole into which the adjustment bolt is screwed, a through hole through which the anchor bolt penetrates, and a detent protrusion that fits into the anchor bolt hole formed in the flange of the receiving frame. In this height adjusting device, by rotating the height adjusting bolt using a rotating jig, the spacer can be moved up and down while the spacer is prevented from rotating, and the installation level of the receiving frame can be adjusted.

[0004]

However, in this height adjusting device, two members, a spacer and a height adjusting bolt, are required, and there is a problem that management of these members and mounting during construction become troublesome. .

Therefore, the problem to be solved by the present invention is that the level of the receiving frame for the underground structure can be easily adjusted by operating from above the receiving frame without using a plurality of members. An object of the present invention is to provide an adjusting device and a lid for an underground structure equipped with the level adjusting device.

[0006]

In order to solve this problem, the level adjusting device for a receiving frame for an underground structure of the present invention has an anchor bolt hole through which an anchor bolt erected on a side block of an underground structure is inserted. In a level adjusting device for a receiving frame for an underground structure, comprising a level adjusting block for screwing the receiving frame formed on the flange to the anchor bolt to support the receiving frame from below, the level adjusting block supports the receiving frame from below. And a projecting portion formed on the upper portion of the support portion so as to be rotatable in the anchor bolt hole.

With this structure, the protrusion can be rotated from above the flange of the receiving frame to rotate the level adjusting block. Therefore, it is easy to adjust the installation level while the receiving frame is supported by the level adjusting block. Can be done. Also, since the level adjustment block screwed into the anchor bolt has both the function of supporting the receiving frame and the function of adjusting the installation level of the receiving frame, the number of members can be reduced, and the management and mounting work of the members is easy. is there.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, it is preferable that the upper surface of the support portion of the level adjusting block has a spherical shape protruding upward. As a result, the spherical surface portion of the support portion comes into contact with the lower surface of the flange of the receiving frame, so that even if the receiving frame is tilted, only the contact point of the spherical portion changes, and the receiving frame can be supported stably. .

Further, in the present invention, it is preferable that the projecting portion of the level adjusting block has a height projecting upward from the upper surface of the flange of the receiving frame. With this, when adjusting the installation level of the receiving frame, the level adjustment block (projection)
It becomes easy to operate to rotate.

Further, it is preferable to provide a fixing block above the protruding portion so as to be screwed into an anchor bolt to fix the receiving frame from above. This allows the level adjustment block to adjust and support the installation level of the receiving frame,
The receiving frame can be fixed by screwing the fixing block to the anchor bolt.

Further, the fixing block is screwed to a protrusion cover which is arranged around the anchor bolt protruding on the upper surface of the flange of the receiving frame and is mounted on the upper surface of the flange, and the anchor bolt protruding from the protruding cover. It is preferably composed of a nut for tightening the protrusion cover. As a result, the protrusion cover is tightened by tightening the nut and press-contacts around the anchor bolt on the upper surface of the flange of the receiving frame, so that the receiving frame can be more reliably fixed.

Further, it is preferable that the protrusion of the level adjusting block has a polygonal outer shape in plan view. As a result, the level adjustment block can be rotated with a commercially available tool such as a spanner or box wrench, so that the installation level of the receiving frame can be adjusted without preparing a special tool.

In the underground structure lid having the above level adjusting device, the level of the receiving frame can be easily adjusted only by rotating the level adjusting block.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of an embodiment in which the level adjusting device of the present invention is applied to a receiving frame of a manhole cover, and FIG.
FIG. 3 is an exploded perspective view of the level adjusting device, and FIG. 3 is a vertical sectional view showing a main part of FIG.

As shown in FIG. 1, the receiving frame 1 of the manhole cover.
Has a flange 11 at the lower end thereof, and a plurality of anchor bolt holes 12 through which the anchor bolts 3 erected on the side mass 2 of the underground structure are inserted are arranged along the circumferential direction in the flange 11. It is provided at intervals. Further, a lid main body (not shown) is fitted and mounted on the lid receiving portion 13 of the receiving frame 1.
Then, the receiving frame 1 is level-adjusted by the level adjusting device 4 so that the level of the upper end surface (upper surface of the lid body) is flush with the road surface.

As shown in FIGS. 1 to 3, the level adjusting device 4 mainly comprises a level adjusting block 41 which is screwed into the anchor bolt 3 to support the receiving frame 1 from below. The level adjustment block 41 includes a support portion 41a made of synthetic resin, and a protrusion portion 41b formed by insert molding in the support portion 41a and protruding from an upper portion of the support portion 41a.
And a screw hole 41c is provided at the center thereof. The support portion 41a has a spherical surface whose upper surface projects upward, and the spherical support portion 41a contacts the lower surface of the flange 11 around the anchor bolt hole 12 to support the receiving frame 1. The protrusion 41b has a hexagonal outer shape in plan view. The projecting portion 41b is located inside the anchor bolt hole 12 when the support portion 41a supports the receiving frame 1, but its planar shape is set so as to be rotatable inside the anchor bolt hole 12. The height is set so as to project upward from the upper surface of the flange 11 of the receiving frame 1.

In addition to the level adjusting block 41, the illustrated level adjusting device 4 has a bolt sleeve 42, a support cover 43, a fixing block 46 composed of a protrusion cover 44 and a nut 45, and a protective cap 47. is doing.

The bolt sleeve 42 is a cylindrical body whose side wall is bellows-like, covers the anchor bolt 3 between the lower surface of the level adjusting block 41 and the upper surface of the side block 2, and when the receiving frame 1 is installed, the lower surface of the flange 11 is installed. This is to prevent the mortar M filling the space between the side block 2 and the side block 2 from adhering to the anchor bolt 3. As the material, synthetic resin such as polypropylene is suitable.

The support portion cover 43 is a donut-shaped body having a support portion storage portion 43a which is opened downward and can store the support portion 41a of the level adjusting block 41. The mortar M adheres to the support portion 41a. Is to prevent. As the material, an elastic material having a good releasability for mortar or the like is suitable, and for example, an independent foam rubber sponge having independent voids may be used. In addition, a protrusion insertion hole 43b is provided in the top plate portion of the support cover 43, and when the support cover 43 is mounted on the level adjustment block 41 from above, the support portion 41a of the level adjustment block 41 is The projection 41b is housed in the support housing 43a, and the projection 41b is inserted into the projection insertion hole 43b so as to project upward.

As described above, the fixed block 46 comprises the protrusion cover 44 and the nut 45. Protruding part cover 4
4 has a projecting portion housing portion 44a capable of housing the projecting portion 41b projecting from the anchor bolt hole 12 of the receiving frame 1, and the top plate portion thereof is provided with a bolt insertion hole 44b through which the anchor bolt 3 is inserted. Has been. Protrusion cover 44
Accommodates the protrusion 41b protruding from the anchor bolt hole 12 of the receiving frame 1 in the protrusion storing portion 44a, and is placed on the flange 11 of the receiving frame 1 with the anchor bolt 3 inserted in the bolt insertion hole 44b. Asphalt is prevented from adhering to the bolt 3 and the protruding portion 41b. As a material, a metal material such as cast iron or stainless steel is suitable.

The nut 45 is screwed onto the anchor bolt 3 protruding from the bolt insertion hole 44b. This nut 45
The lower surface of the has a spherical shape protruding downward, and this spherical portion abuts against the peripheral edge portion of the bolt insertion hole 44b of the projection cover 44 and tightens the same.

The protective cap 47 has an inverted bowl shape having a protective space 47a for accommodating the anchor bolt 3 and the nut 45 protruding from the bolt insertion hole 44b of the protrusion cover 44. The protective cap 47 is placed on the protrusion cover 44 in a state where the nut 45 is housed in the protective space 47a, and prevents asphalt from adhering to the anchor bolt 3 and the nut 45. As the material, as in the case of the protrusion cover 44, a metal material such as cast iron or stainless steel is suitable.

A procedure for adjusting the level of the receiving frame 1 by the level adjusting device 4 having the above structure will be described with reference to FIGS.

Construction 1: As shown in FIG. 4, bolt sleeves 42 are attached to three anchor bolts 3 which are erected on the side block 2, and the level adjusting block 41 is screwed onto the anchor bolts 3 from above. The support cover 43 is mounted from above.

Construction 2: The anchor bolt 3 is inserted into the anchor bolt hole 12 of the receiving frame 1 as shown in FIG.
Are placed on the support cover 43. Then, the box wrench 5 is engaged with the protruding portion 41b of the level adjusting block 41 from above to rotate the level adjusting block 41 so that the upper end of the receiving frame 1 matches the road surface height. At this time, since the projecting portion 41b of the level adjusting block 41 projects upward from the anchor bolt hole 12 of the receiving frame 1, the box wrench 5 can be easily engaged and the level adjustment of the receiving frame 1 can be facilitated.

Construction 3: As shown in FIG. 6, the protrusion 41b is covered with the protrusion cover 44, and the nut 45 is attached to the anchor bolt 3 inserted into the bolt insertion hole 44b of the protrusion cover 44.
The receiving frame 1 is fixed by screwing. Then, the portion of the anchor bolt 3 protruding from the nut 45 is cut as necessary. In this state, the protrusion cover 44 is pressed around the anchor bolt 12 of the receiving frame 1, so that the receiving frame 1 is securely fixed as compared with the case of fixing only by the nut 45. In addition, as described above, since the upper surface of the support portion 41a of the level adjustment block 41 and the lower surface of the nut 45 are each formed into a spherical shape, when the receiving frame 1 is installed while being inclined according to the inclination of the road surface. However, only the contact point of the spherical portion changes, and the receiving frame 1 is stably supported.

Construction 4: The nut 45 is covered with a protective cap 47 as shown in FIG. Then, the mortar is filled between the side blocks 2 and the receiving frame 1, and the surroundings of the receiving frame 1 are backfilled to complete the installation of the receiving frame 1.

If it is necessary to raise the receiving frame 1 once it has been installed, the procedure is as follows.

1) Excavating the asphalt around the receiving frame 1,
Protective cap 47, nut 45 and protrusion cover 44
Remove.

2) The box wrench 5 is engaged with the protruding portion 41b to rotate the level adjusting block 41 to raise the receiving frame 1 and remove the receiving frame 1.

3) Anchor bolt 3, support portion cover 43
Then, the level adjustment block 41 is removed, a new anchor bolt 3 and a new bolt sleeve 42 are mounted, the level adjustment block 41 is screwed onto the anchor bolt 3 from above, and the support cover 43 is mounted. After that, the construction is performed in the same manner as the constructions 2, 3 and 4 described above.

As described above, in this embodiment, the anchor bolt 3, the supporting portion 41a of the level adjusting block 41, the protruding portion 41b of the level adjusting block 41, and the nut 45 are
Since each of them is covered with the bolt sleeve 42, the support cover 43, the protrusion cover 44, and the protective cap 47, and mortar, asphalt, earth and sand, etc. do not adhere, these members can be reused at the time of raising work. It should be noted that the mortar needs to be excavated at the time of the raising work, but other than that, the same procedure as that at the raising work described above can be performed.

The embodiment of the present invention has been described above, but the present invention is not limited to this. For example, in the embodiment, the outer shape of the protrusion is hexagonal, but the shape is not limited to this, and a protrusion is formed on the outer periphery of the protrusion,
You may make it possible to rotate by hand. Also,
The shape may be such that it can be engaged with tools other than spanners and box wrenches. At this time, if the shape of the protrusion and the shape of the nut are the same, it is possible to work with one type of tool.

Further, in the embodiment, the entire projecting portion is covered with the projecting portion cover, but the projecting portion cover may be formed in a gate shape. However, in this case, the level adjustment block cannot be reused because asphalt and earth and sand adhere to the protrusion. Therefore, it is preferable that the protrusion cover has a shape capable of covering the entire protrusion. If you do not want the protruding part to protrude from the upper surface of the flange,
The protrusion cover is not necessary, and the protective cap that covers the nut may cover the anchor bolt hole. Further, the protrusion cover and the nut may be integrated.

[0036]

The present invention has the following effects.

1) A supporting portion for supporting the receiving frame from below, and a protruding portion formed on an upper portion of the supporting portion so as to be rotatable in the anchor bolt hole, the level adjusting block screwed to the anchor bolt. By configuring from
Since the level adjustment block can be rotated by rotating the protrusion from above the flange of the receiving frame, the installation level can be easily adjusted while the receiving frame is supported by the level adjustment block. Also, since the level adjustment block screwed into the anchor bolt has both the function of supporting the receiving frame and the function of adjusting the installation level of the receiving frame, the number of members can be reduced, and the management and mounting work of the members is easy. is there.

2) By making the upper surface of the support portion of the level adjustment block spherical so as to project upward, the receiving frame can be stably supported even when the receiving frame is installed with an inclination.

3) Since the protrusion of the level adjusting block has a height that protrudes upward from the upper surface of the flange of the receiving frame, it is possible to rotate the level adjusting block (projecting portion) when adjusting the installation level of the receiving frame. Easier to do.

4) A fixing block for fixing the receiving frame from above by screwing with an anchor bolt is provided above the projecting portion, so that the installation level of the receiving frame is adjusted and supported by the level adjusting block, and at the same time, the fixing block. The receiving frame can be fixed by screwing the bracket onto the anchor bolt.

5) Since the fixing block is composed of the projection cover and the nut, the projection cover is tightened by tightening the nut, and the periphery of the anchor bolt on the flange upper surface of the receiving frame is pressure-contacted, so that the receiving frame is more reliable. Can be fixed to.

6) By making the outer shape of the protruding portion of the level adjusting block into a polygonal shape in plan view, the level adjusting block can be rotated by a commercially available tool such as a spanner and a box wrench. You can adjust the installation level of the receiving frame without preparing.

7) In the underground structure lid having the above level adjusting device, the level of the receiving frame can be easily adjusted only by rotating the level adjusting block.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment in which a level adjusting device of the present invention is applied to a receiving frame of a manhole cover.

FIG. 2 is an exploded perspective view of the level adjusting device of the present invention.

FIG. 3 is a vertical cross-sectional view showing a main part of FIG.

FIG. 4 is a view for explaining the procedure for adjusting the level of the receiving frame by the level adjusting device of the present invention, and is a view showing the stage of construction 1.

FIG. 5 is a view for explaining the procedure for adjusting the level of the receiving frame by the level adjusting device of the present invention, and is a view showing the stage of construction 2.

FIG. 6 is a diagram for explaining the procedure for adjusting the level of the receiving frame by the level adjusting device of the present invention, and is a diagram showing the stage of construction 3;

FIG. 7 is a diagram illustrating a procedure for adjusting the level of the receiving frame by the level adjusting device of the present invention, and is a diagram illustrating a stage of construction 4;

[Explanation of symbols]

1 receiving frame 11 flange 12 Anchor bolt hole 2 side blocks 3 anchor bolts 4 level adjuster 41 Level adjustment block 41a support part 41b protrusion 42 bolt sleeve 43 Support cover 44 Projection cover 45 nuts 46 fixed block 47 protective cap 5 box wrench M mortar

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazumi Tanaka             5-8-18 Kenkasu, Hakata-ku, Fukuoka City, Fukuoka Prefecture             Hinode Water Supply Equipment Co., Ltd. (72) Inventor Yoko Shinozuka             5-8-18 Kenkasu, Hakata-ku, Fukuoka City, Fukuoka Prefecture             Hinode Water Supply Equipment Co., Ltd. F-term (reference) 2D047 BA20

Claims (7)

[Claims] 1. A level adjusting block for supporting a receiving frame, which has an anchor bolt hole for inserting an anchor bolt standing upright in a side block of an underground structure and formed in a flange thereof, by screwing the anchor bolt into the anchor bolt and supporting the anchor bolt from below. In the level adjusting device for a receiving frame for an underground structure, the level adjusting block includes a supporting portion that supports the receiving frame from below, and a protruding portion that is formed so as to protrude above the supporting portion and that is rotatable in an anchor bolt hole. A level adjusting device for a receiving frame for an underground structure, comprising: 2. The level adjusting device for a receiving frame for an underground structure according to claim 1, wherein an upper surface of the supporting portion has a spherical shape protruding upward. 3. The level adjusting device for a receiving frame for an underground structure according to claim 1, wherein the projecting portion has a height projecting upward from a flange upper surface of the receiving frame. 4. The level adjustment of a receiving frame for an underground structure according to claim 1, wherein a fixing block is provided above the protruding portion so as to fix the receiving frame from above by being screwed with an anchor bolt. apparatus. 5. The fixing block is arranged around an anchor bolt projecting on an upper surface of a flange of a receiving frame and is mounted on the upper surface of the flange, and the fixing block is screwed into the anchor bolt projecting from the projecting cover to project the projecting portion. The level adjusting device for a receiving frame for an underground structure according to claim 4, comprising a nut for tightening the part cover. 6. The level adjusting device for a receiving frame for an underground structure according to claim 1, wherein the protrusion has a polygonal outer shape in a plan view. 7. A lid for an underground structure, comprising the level adjusting device for a receiving frame for an underground structure according to any one of claims 1 to 6.