JPH1113079A - Bearing frame for cover plate for underground construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing frame for a cover plate for an underground construction in which bulk can be easily increased when bulk increase is required because of repair of pavement on a road, for example. SOLUTION: A bearing frame is composed of a cylindrical inner frame 3 to carry a cover plate 1, and an outer frame 4 having an installation part to an underground construction and a cylindrical part above it in which the inner frame 3 is engaged, inverse trapezoid-shaped leg members 5 are suspended at three equally parted positions of a lower end surface of the inner frame 3, leg member receptacles 6, 6 with which the leg members 5 are engaged are extended from an inner wall surface at three equally parted positions of an inner wall lower edge of the outer frame 4 in such a way that a washer can be inserted between the leg members 5 and the leg member receptacles 6, 6 for bulk increase. Bolt insertion grooves 9, and bolt insertion holes are provided at three equally parted positions of the inner wall lower edge of the inner frame 3 and at three equally parted positions of the inner wall lower edge of the outer frame 4, and connection shelves 7, 8 provided with dents 13 in which bolt heads are engaged are respectively provided in upper surface opening parts of the bolt insertion holes 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame for a cover plate provided at an opening above the ground of an underground structure provided on a road or the like, and more particularly to a height for making a disk-shaped cover plate surface coincide with the ground surface. The present invention relates to a receiving frame of a cover plate for an underground building having an adjusting mechanism.

[0002]

2. Description of the Related Art Conventionally, manholes for checking sewerage provided on roads and the like, digester cock housings, water control valve housings provided for waterworks, and branch points of cables buried underground, such as electricity and communication. A disc-shaped cover plate made of cast iron and its receiving frame are attached to the above-ground opening of an underground structure such as an underground box provided in the underground box so that the surface of the cover plate coincides with the ground surface.

[0003] In the case of the cover frame for the underground building constructed as described above, a step may be generated between the cover plate surface and the ground surface due to repair of pavement of a road or the like. It is necessary to raise the height in order to match. In this case, a method of exposing the periphery of the receiving frame and inserting a flat washer or the like between the receiving frame and the underground structure to adjust the height is adopted, and many proposals are found regarding the shape and the inserting method of the flat washer. .

[0004] Since such a method of exposing and raising the receiving frame is troublesome, the method is divided into a cylindrical portion having a cover plate supporting portion on the inner wall side of the receiving frame and a pedestal portion for attaching the underground structure to the cylindrical portion. Japanese Patent Laid-Open No. Hei 9-111789 discloses a manhole cover receiving frame in which a cylindrical portion and a pedestal portion are connected on the inner wall side, and only the cylindrical portion is lifted upward when a bulk is raised, and a spacer for raising is inserted between the cylindrical portion and the pedestal portion. No. 9-125430. Further, the cylindrical portion of the receiving frame is doubled so as to be screwed as seen in a water control valve housing so that the height can be adjusted. On the stair-shaped steps provided on the inner wall,
A manhole cover with a stepped edge on the outer wall or lower end of the inner cylinder so that its height can be adjusted
No. 20,668, and Japanese Utility Model Application Laid-Open No. 62-110350.

[0005]

As described above, various methods of raising a receiving frame have been proposed and implemented in order to cope with a change in the height of the ground surface due to repair of a pavement such as a road. The method of raising the height is cumbersome, and the method of separately manufacturing the cylindrical portion and the pedestal portion is also troublesome because a mechanical device is required to raise the cylindrical portion.

In addition, when the number of washers is increased when the number of washers is increased, the space between the washer insertion portion of the receiving frame and the washer does not completely adhere to each other. There were drawbacks. The present invention provides a cover frame of a cover plate which can easily respond to a change in the height of the ground surface by repairing pavement such as a road, can adjust a raised height without using any mechanical device, and does not cause rattling. The purpose is to.

[0007]

In order to achieve the above object, in a receiving frame of a cover plate according to the present invention, a cylindrical inner frame having a supporting portion of a cover plate at an upper end portion of an inner wall of the receiving frame and a ground structure of an underground building are provided. An inverted frame having an outer frame having a cylindrical portion into which a cylindrical inner frame fits above a mounting portion for attachment to the opening, and an inverted trapezoidal leg at a position obtained by dividing the circular lower end surface of the inner frame into three equal parts A leg piece is suspended from the inner wall of the outer frame at a position where the inner periphery of the lower edge of the outer frame is divided into three equal parts. , And have upwardly-opening opposed inclined pieces, so that a washer for height mounted between a leg piece of the inner frame and a leg piece receiver of the outer frame can be inserted.

In this case, since the leg of the inner frame may be supported by the two trapezoidal side surfaces facing each other, the intermediate portion of the trapezoidal leg may be omitted. The height of the raising is determined by the thickness of the washer for raising, particularly the thickness of the inclined side. However, a plurality of thin washers may be stacked or washers having different thicknesses may be used.

[0009] Further, a leg piece receiver having an inclined surface whose both sides are inclined at an angle equal to the angle of inclination of the leg piece of the inner frame is divided into three parts by an annular piece having the same outer periphery as the inner periphery of the inner wall surface of the outer frame. At the set position, the legs are raised so that the gap at the upper end between the leg supports becomes narrower at a fixed length sequentially from the width of the base of the leg, and the shelf is provided at the lower end of the inner wall of the outer frame. It can be lifted up by changing the fitting position between the leg piece of the inner frame and the leg piece of the outer frame, and it can be solved by changing the fitting position between the leg piece of the inner frame and the leg piece of the outer frame. The leg of the inner frame is configured to fit even in the narrowest width between the receiving ends.

When the inner periphery of the lower end of the inner wall of the inner frame and the lower end of the inner wall of the outer frame and the support pieces are provided in a shelf shape, the inner circumference of the support pieces should be 3
At the equally dividing position, a connecting shelf with a bolt insertion hole is provided on the shelf, and a bolt insertion groove which can be inserted into the bolt insertion hole from the front side is formed on the front side of the inner frame connecting shelf, and the outer frame is formed. A recess in which the bolt head fits is provided on the upper surface of the bolt insertion hole of the connecting shelf, and the inner frame and the outer frame are connected by bolts and nuts. In addition, the connecting shelf is preferably provided at the lower end of the inner wall of each of the leg portion hanging portion of the inner frame and the leg piece receiving portion of the outer frame, and the bolt head is fitted to the upper surface of the bolt insertion groove of the connecting shelf of the inner frame. It is preferable to form a recessed portion.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. Example 1 Lid of Example shown in FIGS. 1, 2 and 3
The receiving frame (2) of (1) is a cylindrical inner frame (3) that fits and holds a disc-shaped lid plate (1) at the upper end of the inner wall, and an installation for installation at the above-ground opening of the underground building And an outer frame (4) having a cylindrical portion into which the inner frame (3) fits. The inner frame (3) is located at a position where the lower end face of the inner frame (3) is divided into three equal parts. Side surface (11),
An inverted trapezoidal leg piece (5) tapering downward at the same inclination angle of (11) is vertically installed, and the inner frame is located at a position where the inner wall at the lower end of the inner wall of the outer frame (4) is divided into three equal parts. Side surface (11) of leg piece (5) of (3), (1
The leg pieces (6) and (6) formed with the inclined surfaces (12) and (12) having the same inclination angle as 1) were stretched, and the inner frame (3) was fitted to the outer frame (4). When the opposing side surfaces (11) and (11) of the leg (5) of the inner frame (3) and the slopes (12) and (6) of the leg holders (6) and (6) of the outer frame (4) 12) is in contact with the inner frame (3)
Configure to support

Further, as shown in FIGS. 2 and 3, the position of the leg (5) of the inner frame (3), which is the lower edge of the inner wall of the vertical portion, and the leg holder of the outer frame (4).
(6), connecting shelves (7), (8), each of which is provided with a bolt insertion hole at a position to be the lower edge of the inner wall in the center of (6), are shelved, and the inner frame (3)
The bolt insertion hole of the connection shelf (7) is a bolt insertion groove (9) into which a bolt shaft can be inserted from the front side, and the upper surface of the bolt insertion hole (10) of the connection shelf (8) of the outer frame (4) is The bolt head is provided with a hexagonal recess (13) for fitting. Note that the connecting shelf (7) of the inner frame (3) and the connecting shelf (8) of the outer frame (4) are leg pieces of the inner frame (3) when the inner frame (3) is fitted to the outer frame (4). A gap is created by the height of (5), and the inner frame
At the bolt mounting position of the upper surface opening of the bolt insertion groove (9) of (3), a recess for fitting the bolt head (19) is provided.

As shown in FIG. 4, the washer (14) for bulking has a sector shape equal to the curved surface of the inner wall surface of the inner frame (3) when viewed from the top, and has a groove shape which is expanded upward. Opposing inclined pieces (1
The inclination angles of (5) and (15) are the side surfaces (11) and (1
Formed to be equal to the inclination angle of 1), and the leg of the inner frame (3)
(5) The washer is constructed so that it can be attached to the contact surface of the outer frame (4) with the leg piece receivers (6), (6), and the inclined pieces (15), (15) have different thicknesses as necessary. Prepare (14).

FIG. 5 (a) shows a state of a connecting portion between the inner frame (3) and the outer frame (4) before raising. When raising the bolts, as shown in FIG. ), Remove the nut (18), screw the bolt (17) and the nut (18), and fix the bolt head (19) on the top of the bolt insertion hole (10) of the connecting shelf (8) of the outer frame (4). Insert the bolt shaft into the recess (13), insert the bolt shaft into the bolt insertion groove (9) of the inner frame (3) from the front side, set the bolt (17) upside down, and rotate the nut (18) to rotate the inner frame. (3) is lifted to the required height, and a washer (14) is placed between the leg (5) of the inner frame (3) and the leg holders (6), (6) of the outer frame (4).
After inserting the bolts, remove the bolts (17) and nuts (18).
The connection is performed as shown in (a), and the raising operation is completed.

Embodiment 2 The receiving frame of the lid of the embodiment shown in FIGS. 6 and 7 differs from that of Embodiment 1 in the configuration of the outer frame and is raised without using a washer. That is, the inner frame (21) is shown in FIG.
As shown in (a), similarly to the first embodiment, a cylindrical shape having a cover plate supporting portion on the upper portion of the inner wall fitted to the outer frame (22) and having a tapered portion at a position obtained by dividing the circumference of the lower end surface into three equal parts. A trapezoidal leg piece (23) is suspended.

The outer frame (22) is, as shown in FIG.
At the lower end of the cylindrical part which is inserted and inscribed and has an installation part (24) for attachment to the above-ground opening of the underground structure, a support shelf (7) is provided at the lower end of the inner wall toward the inside. As shown in FIGS. 6 (b) and 7, a leg piece having an outer periphery substantially equal to the inner periphery of the inner wall surface and having both sides suspended from the inner frame (21) at positions obtained by dividing the circumference of the upper end surface into three parts. The trapezoidal leg receivers (27) having the same inclination angle as the two inclined sides of (23) are connected to the leg receiver (27) and the leg receiver (2).
The gap between the tops of (7) coincides with the width (a) of the trapezoidal base of the leg (23) of the inner frame (21), and is sequentially narrowed by a fixed length (b).
A support ring (26), which is raised so that the inner frame (21) becomes higher in order when the leg pieces (23) of (1) are fitted, is carried on the support shelf (25) and is mounted so as to be rotatable.

On the lower edge of the inner frame (21) and the supporting shelf (25) of the outer frame (22), the connecting shelves (7) and (8) similar to the first embodiment each divide the inner circumference into three equal parts. Shelves in position, inner frame (21) and outer frame
(22) is configured to be connected by bolts and nuts. In addition,
When the connecting shelf (8) of the outer frame (22) is thicker than the width of the support shelf (25), the shelf is provided in consideration of the rotation of the support ring (26).

[0018]

Since the present invention is configured as described above, it has the following effects. The inner ring is supported by the outer frame and the three leg pieces and is connected by bolts and nuts, so that there is no possibility of rattling. At the time of raising, the connected bolts and nuts are removed, and the removed bolts and nuts can be used as jacks to lift the inner frame to a required height, so that no mechanical device is required. The inner frame is configured such that the inclined surfaces of the two legs of the outer frame are in contact with and support the oppositely inclined side surfaces of the inverted trapezoidal leg pieces, and a washer is inserted therebetween to support the inclined surface. So there is no fear of rattling over time.

[Brief description of the drawings]

FIG. 1 is a plan view in which a part of a cover plate is cut away.

2A is a partially enlarged front view of an inner frame, and FIG. 2B is a partially enlarged front view of an outer frame, taken along a line AA in FIG.

3A is a partially enlarged sectional view of an inner frame, and FIG. 3B is a partially enlarged sectional view of an outer frame, taken along a line BB in FIG.

FIG. 4 is a (a) front view and (b) a plan view of a washer for raising.

FIG. 5 is a schematic cross-sectional view of a connecting portion showing a raising operation.

6A and 6B are cross-sectional views of an inner frame and an outer frame of another embodiment.

FIG. 7 is a plan view of the outer frame of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cover plate 2 Receiving frame 3,21 Inner frame 4,22 Outer frame 5,23 Leg piece 6,24 Leg piece receiving 7,8 Connecting shelf 9 Bolt insertion groove 10 Bolt insertion hole 11 One side 12 Slope 13 Depression 14 Washer 15 Inclined piece 16 Base 17 Bolt 18 Nut 19 Bolt head 25 Support shelf 26 Support ring

Claims (3)

[Claims] 1. A receiving frame (2) of a disc-shaped cover plate (1) is provided between a cylindrical inner frame (3) having a support portion of a cover plate (1) on an upper portion of an inner wall and a ground opening of an underground building. A mounting part for attachment, and an outer frame (4) having a cylindrical part into which the inner frame (3) fits above the mounting part, and divides the circumference of the lower end face of the inner frame (3) into three equal parts. An inverted trapezoidal leg piece (5) is erected on the inner wall of the inner frame (3) at a position that divides the inner circumference of the lower edge of the inner wall of the outer frame (4) into three equal parts. Five)
The leg side supports (11), (12) having the same inclination angle as the side surfaces (11), (11),
(6), (6) is stretched, and when the inner frame (3) is fitted to the outer frame (4), the side surfaces (11), (11) of the leg pieces (5) of the inner frame (3) Is the outer frame (4)
(6) In addition to contacting and supporting the inclined surfaces (12), (12) of (6), the leg piece (5) is interposed between the leg piece (5) and the leg piece receivers (6), (6). The underground is constructed so that a raised washer (14) having inclined pieces (15), (15) that have the same inclination angle as the side surfaces (11), (11) can be installed. Receiving frame of lid for building. 2. The receiving frame (2) according to claim 1, further comprising: a support portion for a cover plate (1) at an upper portion of an inner wall, and an inverted trapezoidal leg at a position dividing the circumference of a lower end surface into three equal parts. An inner frame (21) having a piece (5) suspended therefrom, and an outer frame (22) having a mounting portion attached to the above-ground opening of the underground structure and having a cylindrical portion above which the inner frame (21) fits. And a support shelf (25) facing inward at the lower end of the inner wall of the outer frame (22).
With the same outer circumference as the inner circumference of the inner wall surface, and the same inclination angle as the leg piece (5) with both sides suspended from the inner frame (21) at the position where the circumference of the upper end face is divided into three. The gap between the tops of the first leg support (27) and the next leg support (27) has a trapezoidal leg support (27) having sides of the base of the leg (5) of the inner frame (21). To match the width of
A support ring (26) having leg supports (27), (27),... Bulged so that the gap between the tops of the leg supports (27), (27) is narrowed by a certain length in sequence. A receiving frame for a cover plate for an underground building, the supporting frame being supported on a vehicle and being rotatably mounted. 3. The receiving frame (2) according to claim 1 or 2,
Connect the shelves (7) and (8) at positions that divide the inner circumference of the lower end of the inner wall of the inner frame (3) or (21) and the outer frame (4) or (22) into three equal parts, respectively. The connecting shelf (7) of (3) has a bolt insertion groove (9) into which the bolt shaft can be inserted from the side, and the outer frame (4) has a recess (13) into which the bolt head fits in the opening on the top surface. Bolt insertion hole (10)
A receiving frame for a cover plate for an underground building, comprising: