JPH11310930A - Receive frame for cover plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a cover plate face low on repairing a road and enable vehicles to pass over the road even before repaving by dividing a receive frame into the upper and lower portions to form a cover receive part and a pedestal and providing a leg piece in the cover receive part to make it possible to fit to the pedestal and further, making it possible to fit the cover plate and hold it in the pedestal. SOLUTION: When a disc-shaped cover plate 1 is fit to a receive frame 2, the external face of a leg piece 5 extended down along the external periphery of the cover plate is held by the internal wall face of the straight wall of the receive frame 2. The receive frame 2 is divided into the upper and lower portions to form a cover receive part 3 and a pedestal 4. A leg piece 6 having the same inclination angle and dimensions with the external side face of the leg piece 5 of the cover plate 1 is extended down at the lower end of the straight wall 7 of the upper cover receive part 3. Further, a holding part having the same inclination angle and dimensions with the holding contact face at the time when the leg piece 5 of the cover plate 1 formed at the upper internal wall face of the straight wall 7 of the upper cover receive part 3 is fitted to the straight wall is formed at the upper internal wall face of the straight wall 8 of the lower pedestal 4. The receive frame is constituted so that it has the same dimensions with conventional receive frames when the upper cover receive part 3 is fitted in the lower pedestal 4 and combined therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving frame for a cover plate provided at an opening above the ground of an underground structure provided on a road or the like. The present invention relates to a cover frame of a cover plate that can be adjusted in height.

[0002]

2. Description of the Related Art Conventionally, manholes for inspection of sewerage provided on roads, fire hydrant housings and water control valve housings provided for waterworks, and branch points of cables for electricity and communication buried underground. 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. The standard for this cover plate and receiving frame is also defined in Japanese Industrial Standards,
Generally, the height of the receiving frame is generally 110 mm according to this standard.

[0003] The road is paved with asphalt, and the surface is worn and damaged by the passage of vehicles and the like, so the lower half of the pavement of about 110 mm is laid with hard asphalt, and the upper part is finished with surface layer asphalt. Pavement repair is a method of removing all layers of asphalt and repaving,
A method of excavating the surface layer asphalt by 30 to 50 mm and repaving only the surface layer asphalt pavement, and a method of excavating the asphalt pavement by thinly excavating the surface asphalt pavement according to the surface wear state, and the like are performed.

[0004] For this reason, many proposals have been made regarding a manhole cover raising device for adjusting the height of a receiving frame of a cover plate to a height after repair, such as Japanese Utility Model Publication No. 3-128121 and Japanese Utility Model Publication No. Hei 3-3640, Further, as seen in the cover of the manhole No. 2-40100, there is a structure in which a cover plate is fitted inside the receiving frame and the height is adjusted by screwing a lifting cylinder that moves up and down. .

[0005]

As described above, the pavement of the road is repaired by excavating the pavement of the surface layer or the pavement of all layers, and then repaving. However, the portion where the receiving frame of the cover plate is installed is removed. It is necessary to excavate so as not to damage the receiving frame, and it is troublesome to dig around the receiving frame manually without using a machine, especially in snowfall areas, there is wear on the pavement surface due to snow tires, Since the repair work is carried out every year, there is a demand to excavate around the receiving frame as soon as possible, but there is no satisfactory receiving frame at present.

[0006] On a road where many vehicles pass,
Repair work is often performed while passing the vehicle even before repaving after excavation.Therefore, even if a slope plate is attached around the receiving frame or a slope is made of pavement material and the vehicle passes over the lid plate This is troublesome because it is necessary to take protective measures so that the receiving frame is not damaged. SUMMARY OF THE INVENTION It is an object of the present invention to provide a cover frame of a cover plate that can be quickly excavated by a machine or the like at the time of repairing a road and that does not interfere with the passage of a vehicle or the like.

[0007]

SUMMARY OF THE INVENTION The present invention has been made as a result of various studies in order to solve the above-mentioned problems, and the conventionally manufactured receiving frame is divided into upper and lower parts into two parts, and a lid receiving part and a pedestal part are provided. This problem can be solved by providing a leg piece on the lid receiving portion so that the lid can be fitted and connected to the pedestal portion, and the lid plate can be fitted and carried on the pedestal portion.

That is, a generally disc-shaped lid plate has legs extending vertically along its outer periphery, and its outer surface is expanded toward the upper end so as to be carried by the upper inner wall surface of the annular straight wall of the receiving frame. In this case, the receiving frame is divided into two upper and lower parts by a straight wall, and the same inclination angle of the leg of the lid plate from the lower end (cut surface) of the upper lid receiving part. A leg piece having the same outer diameter as that of the lower pedestal is vertically provided, and an inclined surface having the same inclination angle and the same inner diameter 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. Then, the lower pedestal is fitted and carried by the leg of the upper lid receiving part, and the lid plate can be fitted and carried.

In the case where 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 a shelf-like piece provided on the inner wall surface of the lid receiving portion of the receiving frame, the upper lid receiving portion is provided. Similarly, a more vertically extending leg piece may be configured so that a shelf-like piece is provided on the inner wall surface of the lower pedestal portion and can be carried.

In any case, at the time of shipping and installation, since the product is delivered and installed at the height of the conventional receiving frame, the lid receiving portion and the pedestal portion are respectively connected to the inner wall surfaces of the lower end of the leg of the lid receiving portion and the lower end of the pedestal portion. It is preferable to connect the connecting shelves with bolts and nuts. The connecting shelf of the lid receiving portion is formed in a groove shape so that bolts can be inserted from the inside, and the bolts are screwed into the connecting shelves of the pedestal portion. The connection shelf may be provided with a screw hole, and if the connection shelf is provided at a position where the inner circumference is divided into three equal parts and connected, the inclination of the cover plate surface can be adjusted.

Further, if a shelf-like piece is provided on the inner wall surface of the upper leg of the connecting shelf of the lid receiving portion, the lid receiving portion is pushed up 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 lid receiving part, and screw holes for screwing bolts are drilled in the shelf-like piece, and another lid receiving part is stacked when raising the pavement surface. The lid receiving portion may be hooked up by screwing an eyebolt, and the outer wall of the straight wall of the lid receiving portion may be vertically or inclined so that the upper end is located outside the lower end.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. In the embodiment shown in FIGS. 1 and 2, when the disc-shaped lid plate (1) is fitted into the receiving frame (2),
The outer surface of the leg piece (5) suspended along the outer periphery of the lid plate (1) is configured to be supported on the inner wall surface of the straight wall of the receiving frame (2), and the contacting supporting surface is It is intended to be machine-finished to have the same inclination angle.

The receiving frame (2) of the lid plate (1) thus configured is divided into an upper and lower lid receiving portion (3) and a pedestal portion (4), and the divided upper lid receiving portion (3 At the lower end of the straight wall (7), a leg (6) having the same inclination angle, height, and outer diameter as the outer surface of the leg (5) of the lid plate (1) is vertically provided. On the upper inner wall of the straight wall (8) of the lower pedestal (4), the legs of the lid plate (1) formed on the upper inner wall of the straight wall (7) of the upper lid receiving part (3) When the piece (5) is fitted, it forms a carrier with the same inclination angle, depth, inner diameter, etc. as the carrier surface with which it comes into contact, and the upper lid receiver (3) and the lower pedestal (4) are When fitted and combined as shown in FIG. 1, it is configured to have the same dimensions as the conventional receiving frame.

The connecting shelves (11) and (12) are provided on the inner wall surface of the leg (6) of the lid receiving portion (3) and the lower end of the inner wall surface of the pedestal portion (4), respectively.
The connecting shelf (11) has a bolt insertion groove (15) that opens inward, and the connecting shelf (12) has a bolt (16) screwed into it so that the connecting shelf (11) can be connected with bolts (16). A hole (14) is drilled. The bolt insertion groove (15) of the connecting shelf (11) and the screw hole (14) of the connecting shelf (12) may be a bolt hole through which a bolt shaft can be inserted. In this case, the bolts and nuts are used for connection. Is done.

A shelf-like piece (13) is provided on the inner wall surface of the upper leg (6) of the connection shelf (11) of the lid receiving portion (3), and a screw hole (14) into which a bolt is screwed. ) Should be drilled. These connecting shelves (11) and (12) are preferably provided at least at three positions where the inner circumferences of the lid receiving portion (3) and the pedestal portion (4) are equally divided.
The leg piece (6) of (3) may be vertically suspended like a cylindrical straight wall (7), or a plurality of leg pieces of a required width may be vertically suspended at positions where the circumference is equally divided. .

In the embodiment shown in FIG. 3, the lower surface of a leg piece (5) vertically extending along the outer periphery of the lid plate (1) is provided on the inner wall surface of the receiving frame. Touching the upper surface of the carrying shelf, the lid plate (1) is the receiving frame
It relates to a lid plate and a receiving frame configured to carry when fitted in (2), and as in the embodiment shown in FIGS. 1 and 2, the receiving frame (2) is vertically arranged with a lid receiving portion (3) and a pedestal. Leg (4), and at the lower end of the straight wall (7) of the upper lid receiving part (3), the same height, outer diameter, etc. as the leg (5) of the lid plate (1) (6) is erected, and the supporting shelf (18) is provided at the lower end of the inner wall of the pedestal (4) at the same depth (from the upper surface of the straight wall) as the supporting shelf (17) of the lid receiving part (3). Things.

[0017]

Since the present invention is configured as described above, it has the following effects. When repairing the pavement of the road, especially when excavating only the surface pavement and repaving, remove the bolts etc. connecting the lid receiving part and the pedestal part of the receiving frame and remove the upper lid receiving part so as to remove it. If the cover plate is used, the surface of the cover plate will be reduced by the thickness of the pavement on the surface layer, so the pavement can be excavated without damaging the cover plate receiving frame, and the vehicle will pass over the cover plate before repaving. Can be done. 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 repaving is easier than before and the slope is gentler, so vehicles etc. Is easy to pass.

If it is necessary to slightly raise the height or tilt the cover plate surface during repaving, prepare and insert a ring-shaped raising ring having the same shape as the straight wall surface of the pedestal portion of the receiving frame or the upper surface of the support portion. The requirements can be easily met by inserting and connecting spacers or the like having a bolt hole between them, and when the bulk is to be increased, the lid receiving portions can be stacked as necessary.

Note that a shelf-like piece is provided above the connection shelf of the lid receiving portion, and when the bolt is tightened, the bolt head comes into 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 pedestal portion. In this case, the lid receiving portion is pushed up by the bolt, and it is easy to remove the lid receiving portion.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a connecting portion showing an assembly state of a cover 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 sectional view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid plate 2 Receiving frame 3 Lid receiving part 4 Pedestal part 5,6 Leg piece 7,8 Straight wall 11,12 Connecting shelf 13 Shelf-shaped piece 14 Screw hole 15 Bolt insertion groove 16 Bolt 17,18 Carrying shelf

Claims (2)

[Claims] A receiving frame (2) of a disc-shaped lid plate (1) is vertically divided into a lid receiving portion (3) and a pedestal portion (4), and the divided upper lid receiving portion (3) is provided. The lower end of the straight wall (7) has the same shape as the part that is in contact with the lid receiving part (3) of the leg piece (5) suspended from the outside of the lid plate (1) and the lid plate (1) is fitted and carried. And a leg piece (6) of the same size is suspended, and the straight wall of the upper lid receiving part (3) is on the inner wall side of the straight wall (8) of the lower pedestal part (4).
(7) A receiving frame for a lid plate, wherein the lid plate (1) support portion is formed to have the same shape and the same size as the support portion of the lid plate (1) formed on the inner wall side of (7). 2. An inner wall surface of a leg piece (6) of a lid receiving portion (3) and a pedestal portion.
The connecting shelves (11) and (12) are provided at the lower end of the inner wall surface of (4), respectively, and the lid receiving part (3) and the pedestal part (4) can be connected by bolts or the like. The receiving frame of the cover plate according to claim 1.