JP4026032B2 - Cover plate for lid plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a receiving frame for a cover plate provided in a ground opening of an underground structure provided on a road or the like, and in particular, a cover plate capable of lowering the cover plate surface during road repair and capable of height adjustment. It is related to the receiving frame.
[0002]
[Prior art]
Conventionally, manholes for inspection of sewers provided on roads, fire hydrant enclosures, water control valve enclosures provided in waterworks, etc., and underground installations such as branch points for electricity and communication cables embedded in the ground A cast iron disk-shaped cover plate and its receiving frame are attached to the ground opening of an underground structure such as a box so that the cover plate surface coincides with the ground surface.
The lid plate and the receiving frame are also stipulated in the Japanese Industrial Standard. Generally, the height of the receiving frame is generally 110 mm according to this standard.
[0003]
In addition, the road is paved with asphalt, and the surface is worn and damaged by passing vehicles etc., so the lower half of the pavement of about 110 mm is laid with hard asphalt, and the top is finished with asphalt on the surface layer, repairing the pavement Is a method of removing the entire asphalt layer and re-paving, excavating 30-50mm of the surface layer asphalt and re-paving only the surface layer asphalt pavement, and further repairing the asphalt pavement by thinly excavating according to the surface wear condition There are ways to do it.
[0004]
For this reason, there have been many proposals such as No. 3-12821 and No. 3-3640 regarding a manhole cover raising device for adjusting the receiving frame of the cover plate to the height after repair. As can be seen on the lid of the fair 2-40100 manhole, there can be seen a structure in which the height can be adjusted by screwing a raising and lowering cylinder fitted with a lid plate inside the receiving frame.
[0005]
[Problems to be solved by the invention]
As mentioned above, repair of road pavement involves resurfacing after excavating the pavement of the surface layer or all layers, but it is necessary to excavate the part where the receiving frame of the cover plate is installed so as not to damage the receiving frame Since the surroundings of the receiving frame are manually excavated without using a machine, it is troublesome. Especially in snowy areas, there is wear on the pavement surface due to snow tires, and repair work is performed every year. There is a demand for excavation around the area as soon as possible, but there is no frame to satisfy.
[0006]
Also, on roads where vehicles frequently pass, repair work is often performed while passing the vehicle even after re-paving after excavation.To this end, inclined plates are attached around the receiving frame, or inclined surfaces are made of paving material. This is troublesome because it is necessary to take protective measures so that the receiving frame is not damaged even if the vehicle passes over the cover plate.
SUMMARY OF THE INVENTION An object of the present invention is to provide a receiving frame for a cover plate that can be excavated quickly by a machine or the like when repairing a road and that does not interfere with the passage of a vehicle or the like.
[0007]
[Means for Solving the Problems]
The present invention has been made as a result of various studies in order to solve such problems, and a receiving frame that has been manufactured in the past is divided into two in the vertical direction to form a lid receiving portion and a pedestal portion, and a leg piece on the lid receiving portion. This can be solved by configuring so that the lid plate can be fitted and supported on the pedestal portion.
[0008]
In other words, generally a disc-shaped lid plate has leg pieces suspended along the outer periphery, and an inclined surface that expands toward the upper end so that its outer surface is carried by the upper inner wall surface of the straight wall that forms the ring of the receiving frame. In this case, it is usually configured to be fitted and supported. In this case, the same angle of inclination of the leg pieces of the lid plate from the lower end (cut surface) of the upper lid receiving portion obtained by dividing the receiving frame into two vertically by the straight wall. A leg piece having a radial dimension is suspended, and an inclined surface having the same inclination angle and the same inner diameter dimension as the lid plate fitting part of the lid receiving part is formed on the upper inner wall surface of the straight wall of the lower pedestal part. The pedestal portion is configured to be fitted and supported by the leg pieces of the upper lid receiving portion and the lid plate can be fitted and supported.
[0009]
If the lid plate is configured so that the lower end surface of the leg piece of the lid plate is supported by the upper surface of the shelf-like piece shelved on the inner wall surface of the lid receiving portion of the receiving frame, it is suspended from the upper lid receiving portion. Similarly, the leg pieces may be configured so that shelves can be laid and supported on the inner wall surface of the lower pedestal.
[0010]
In either case, since the product is delivered and installed at the height of the conventional receiving frame at the time of shipping and installation, the lid receiving portion and the pedestal portion are connected to the inner wall surface and the connecting shelf at the lower end of the leg piece of the lid receiving portion and the lower end of the pedestal portion, respectively. It is preferable that shelves are connected to each other with bolts and nuts. The connection shelf of the lid receiving portion is formed in a groove shape so that the bolts can be inserted from the inside, and the screw holes are formed so that the bolts are screwed into the connection shelf of the pedestal portion. However, the inclination of the lid plate surface can be adjusted by connecting and connecting the connecting shelves at positions where the inner circumference can be divided into three equal parts.
[0011]
Furthermore, if a shelf-like piece is installed on the inner wall surface of the upper leg piece of the connecting shelf of the lid receiving portion, the lid receiving portion is pushed upward with a bolt head when the lid receiving portion is removed from the pedestal portion, It can be removed without removing the pavement around the part, and a screw hole into which the bolt can be screwed is drilled in the shelf-like piece, and when the pavement surface is raised, another lid receiving part can be stacked The lid receiving portion may be lifted by screwing the eyebolt, and the outer wall of the straight wall of the lid receiving portion may be inclined so that the vertical or upper end is positioned outside the lower end.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to the drawings.
The embodiment shown in FIGS. 1 and 2 shows a leg piece (5) suspended along the outer periphery of the lid plate (1) when the disc-shaped lid plate (1) is fitted to the receiving frame (2). ) Is supported by the inner wall surface of the straight wall of the receiving frame (2), and the contact surface that comes into contact is intended to be machine-finished so as to have the same inclination angle.
[0013]
The receiving frame (2) of the lid plate (1) thus configured is divided into a lid receiving part (3) and a pedestal part (4) on the upper and lower sides. At the lower end of the wall (7), a leg piece (6) having the same inclination angle, height and outer diameter as the outer surface of the leg piece (5) of the cover plate (1) is suspended, On the upper inner wall surface of the straight wall (8) of the pedestal part (4), the leg pieces (5) of the lid plate (1) formed on the upper inner wall surface of the straight wall (7) of the upper lid receiving part (3) ) Is formed with the same inclination angle, depth, inner diameter, etc. as the carrying surface that comes into contact, and the upper lid receiving portion (3) and lower pedestal portion (4) are as shown in FIG. When fitted and assembled, it has the same dimensions as a conventional receiving frame.
[0014]
Connection shelves (11), (12) are installed on the inner wall surface of the leg piece (6) of the lid receiving portion (3) and the lower end of the inner wall surface of the pedestal portion (4), respectively, and bolts (16 ), The connecting shelf (11) has a bolt insertion groove (15) opened inward, and the connecting shelf (12) has a screw hole (14) into which the bolt (16) is screwed. The Note that the bolt insertion groove (15) of the connection shelf (11) and the screw hole (14) of the connection shelf (12) can be bolt holes through which the bolt shaft can be inserted. Is done.
[0015]
In addition, a shelf-like piece (13) is provided on the inner wall surface of the upper leg piece (6) of the coupling shelf (11) of the lid receiving portion (3), and a screw hole (14) into which a bolt is screwed is formed. It is good to install.
These connecting shelves (11), (12) are preferably provided at at least three positions where the inner periphery of the lid receiving portion (3) and the pedestal portion (4) can be equally divided, and the leg pieces of the lid receiving portion (3) ( In the case of 6), the cylindrical straight wall (7) may be suspended like a cylinder, or a plurality of leg pieces having a required width may be suspended at positions where the circumference can be equally divided.
[0016]
The embodiment shown in FIG. 3 is a carrier shelf in which a lower surface of a leg piece (5) suspended from the lid plate (1) along the outer periphery of the lid plate (1) is shelved on the inner wall surface of the receiving frame. The lid plate and the receiving frame are configured to be in contact with the upper surface and to be supported when the lid plate (1) is fitted to the receiving frame (2) .The receiving frame (2) is similar to the embodiment shown in FIGS. Is divided into a lid receiving part (3) and a pedestal part (4) vertically, and the same height as the leg piece (5) of the lid plate (1) at the lower end of the straight wall (7) of the upper lid receiving part (3) In addition, a leg piece (6) having the same outer diameter and the like is suspended, and at the lower end of the inner wall of the pedestal part (4), the same depth as the carrying shelf (17) of the lid receiving part (3) (from the upper surface of the straight wall) ) Can carry a carrying shelf (18).
[0017]
【The invention's effect】
Since the present invention is configured as described above, it has the following effects.
When repairing road pavements, especially when excavating only the pavement of the surface layer and re-paving, remove the bolts that connect the lid receiving part of the receiving frame and the pedestal and remove the upper lid receiving part. If the cover plate is used, the surface of the cover plate will be lowered by the thickness of the pavement on the surface layer. Therefore, the pavement can be excavated without damaging the cover plate receiving frame, and the vehicle passes over the cover plate even before re-paving. Can be made. Also, when excavating the entire pavement, the height of the receiving frame is low, so excavation around the receiving frame is easy, protection of the receiving frame before re-paving is easier and the slope is gentler, so vehicles etc. Is easy to pass.
[0018]
If it is necessary to slightly raise or tilt the lid plate surface during re-paving, prepare a raising ring that has the same shape as the direct wall surface of the pedestal of the receiving frame or the upper surface of the carrier and insert it between the connecting shelves. If a spacer having a hole is inserted and connected, it is possible to easily meet the demand, and when raising the volume is necessary, the lid receiving portions can be stacked as much as necessary.
[0019]
In addition, a shelf-like piece is provided on the upper side of the connection shelf of the lid receiving portion, and when the bolt is tightened, the bolt head is in contact with the lower surface of the shelf-like piece, and the bolt shaft is screwed into the bolt hole of the connection shelf of the base portion. Then, the lid receiving part is pushed up by the bolt, and it becomes easy to remove the lid receiving part.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a connecting portion showing an assembly state of a lid plate and a receiving frame.
FIG. 2 is a partial perspective view of a receiving frame of the embodiment of FIG.
FIG. 3 is a partial cross-sectional view of another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lid plate 2 Receiving frame 3 Lid receiving part 4 Base part 5,6 Leg piece 7,8 Straight wall 11,12 Connection shelf 13 Shelf piece 14 Screw hole 15 Bolt insertion groove 16 Bolts 17, 18 Carrier shelf

Claims (1)

    The receiving frame (2) of the disc-shaped lid plate (1) is vertically divided into a lid receiving portion (3) and a pedestal portion (4), and the straight wall (7) of the divided upper lid receiving portion (3) The lower end has the same shape and the same size as the portion where the lid plate (1) is fitted and supported by contacting the lid receiving portion (3) of the leg piece (5) suspended along the outer periphery of the lid plate (1). A leg piece (6) is suspended and a lid formed on the inner wall side of the straight wall (7) of the upper lid receiving portion (3) on the inner wall side of the straight wall (8) of the lower pedestal portion (4) To form a cover plate (1) having the same shape and dimensions as the support portion of the plate (1) or a support portion for supporting the cover receiving portion (3) and connecting the lid receiving portion (3) and the pedestal portion (4) Connecting shelves (11) and (12) are respectively installed on the lower end of the inner wall surface of the leg piece (6) and the lower end of the inner wall surface of the pedestal (4). The bolt insertion groove (15) that opens toward the A screw hole (14) for screwing is provided, and a screw hole for screwing the bolt at a position above the connection shelf (11) provided at the upper end of the inner wall surface of the leg piece (6) of the lid receiving portion (3) at the lower end of the inner wall surface. The shelf-like piece (13) provided with (14) is laid in parallel to the connection shelf (11), and the lid receiving part (3) and the base part (4) are bolts using the connection shelves (11) and (12). A receiving frame for the lid plate, characterized in that it is connected by

Images