JPH1072839A - Bearing frame fixed construction of manhole cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to very easily and stably fix a bearing frame of a manhole cover by fitting to the inclined road surface. SOLUTION: In this bearing frame fixed construction, embedded nuts 4 are provided along the circumference of a horizontal surface of an opening section 3 for a manhole 2 at a proper interval, and a proper number of adjusting rings 5 having the upper surfaces inclined to the lower surfaces are piled on the circumference of the horizontal surface to mount bearing frames 7 of a manhole cover on them. The upper surfaces of the bearing frames 7 are approximately flush with the inclined road surface 8, and a bolt member such as a bolt 10, etc., having one end screwed in each of the embedded nuts 4 and a bolt member such as a bolt 11, etc., screwing a nut 14 in the end projected to the upper surface through a hole of each of the bearing frames 7 are inserted into through- holes 6 of the adjusting rings 5 fitted to positions of the embedded nuts 4. Then, butt ends of those bolt members or butt ends of members such as proper adjusting joint 13, etc., provided between those bolt members are respectively constituted of spherical head sections and socket sections crowned with them in a rotatable manner and are connected to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a support frame of a manhole cover, and more particularly to a structure for fixing a support frame along an inclined road surface.

[0002]

2. Description of the Related Art In many cases, the opening of a manhole faces a road or the like, and both ends of the road are usually inclined. Therefore, the manhole cover must also be fixed at an angle to the road surface. Therefore, the supporting frame supporting the lid must be fixed at an angle along the road surface. Therefore, conventionally, a preparation ring whose upper surface is inclined with respect to the lower surface is mounted on the periphery of the opening of the manhole, a support frame is mounted on the preparation ring, and the upper end of the support frame is adjusted to the inclination of the ground surface. And in this case, the base bolts are screwed into the embedding nuts provided on the periphery of the opening of the manhole, and each of these base bolts is bent and passed through the hole formed in the outer periphery of the preparation ring and the outer periphery of the support frame, A nut is screwed onto the end of the base bolt protruding from the upper surface of the support frame. In addition, when a straight foundation bolt is passed through the hole and a nut is screwed on the end of the foundation bolt protruding from the upper surface of the support frame, the contact surface between the nut and the support frame has an angle. Washers must be interposed.

[0003]

However, it takes a lot of skill and labor to bend bolts in accordance with the degree of inclination of the road surface at the site where the support frame of the manhole cover is fixed, resulting in poor workability. When a straight bolt is used as it is, the above-mentioned special washer must be prepared, which is cumbersome, and depending on the degree of inclination, a hole formed in the outer peripheral edge of the preparation ring and a hole formed in the outer peripheral edge of the support frame may be passed through the hole. May not be. Therefore, there is no simple and stable connection means with good workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a structure capable of extremely easily and stably fixing a support frame of a manhole cover according to the above-mentioned inclined road surface. Is to solve.

[0005]

According to a first aspect of the present invention, there is provided a structure for fixing a support frame of a manhole cover along an inclined road surface, wherein the embedded nuts are provided at appropriate intervals along the outer circumference of a horizontal surface of the opening of the manhole. Around the outer periphery of the horizontal plane of the opening of the manhole, a suitable number of preparation rings whose upper surfaces are inclined with respect to the lower surface are appropriately stacked, and the support frame of the manhole cover is placed thereon, and the upper surface of the support frame is inclined. A bolt member having one end screwed to each of the buried nuts and a bolt member having a nut screwed to an end protruding to the upper surface through a hole in the support frame are positioned at the positions of the buried nuts. Pass through the through hole on the outer circumference of each combined preparation ring, and in this through hole, the butt end of these bolt members or the butt end of an appropriate member interposed therebetween are respectively attached to the spherical head and this Rotatable It is obtained by connecting the a configuration consisting of a socket part for.

According to a second aspect of the present invention, there is provided a structure for fixing a support frame of a manhole cover along an inclined road surface.
Embedding nuts are provided at appropriate intervals along the outer circumference of the horizontal plane of the opening of the manhole, and a plurality of adjustment rings whose upper surfaces are inclined with respect to the lower surface are appropriately stacked on the outer circumference of the horizontal plane of the opening of the manhole, and the manhole cover is placed on these. Place the support frame of
The upper surface of this support frame is adjusted to be substantially flush with the inclined road surface, and the spherical head at the other end of the bolt having one end screwed to each of the buried nuts, and the bolt end protruding to the upper surface through the hole of the support frame with a nut And the socket at the other end of the bolt
Pass through the through-hole of each preparation ring corresponding to the position of each of the above-mentioned buried nuts, rotatably cover the socket portion with this spherical head in this through-hole and connect them, and also support them from the above-mentioned buried nut. At a location at a distance to the frame, the spherical head of the bolt with one end screwed to the embedded nut and the spherical head of the bolt with the nut screwed to the bolt end protruding from the upper surface of the support frame Pass through the through hole of each preparation ring adjusted to the position of the buried nut, and have sockets at both ends in this through hole,
Each of the sockets of the adjustment joint whose length can be freely adjusted is rotatably covered and connected.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embedded nuts 4 are provided at appropriate intervals along the outer peripheral edge of the horizontal opening 3 of the manhole 2 facing the ground surface 1. On the outer periphery of the opening 3 of the manhole 2, a number of adjusting rings 5 whose upper surfaces are inclined with respect to the lower surface are appropriately stacked. Each of these preparation rings 5 has through-holes 6 penetrating the upper and lower surfaces at appropriate intervals along the outer peripheral edge, and these through-holes 6 are connected to the respective embedded nuts 4 of the opening 3 of the manhole 2. It is placed according to the position. A support frame 7 of a manhole cover (not shown) is placed on the preparation ring 5. At this time, the upper surface of the support frame 7 is adjusted to be substantially flush with the inclined pavement road surface 8. When the support frame 7 is placed on the uppermost preparation ring 5, the holes 9 provided along the outer peripheral edge of the flange of the support frame 7 are aligned with the respective through holes 6 of the preparation ring 5.

On the lower inclined side of the support frame 7, a spherical head 10a at the other end of a bolt 10 having one end screwed to each of the buried nuts 4 is passed through the through hole 6 of the preparation ring 5. When each of the bolts 10 is screwed to each of the buried nuts 4, the bolts 10 are fixed by adjusting the depth of the screwing to the buried nut 4 and tightening the fixing nut 10b at the corresponding location. In the hole 6, the bolt 11 is rotatably put on the spherical head 10a of the bolt 10 and the socket 11a is rotatably connected thereto. The other end of the bolt 11 is passed through the hole 9 of the support frame 7 to support the bolt. Nuts 12 are screwed onto ends of bolts 11 protruding from the upper surface of the nut 7, and these nuts 12 are tightened.

On the inclined high side of the support frame 7,
The spherical head 10a at the other end of the bolt 10 having one end screwed to each of the buried nuts 4 is passed through the through hole 6 of the preparation ring 5. When each of the bolts 10 is screwed to each of the buried nuts 4, the bolts 10 are fixed by adjusting the depth of the screwing to the buried nut 4 and tightening the fixing nut 10b at the corresponding location. In this through hole 6, a preparation joint 13 in which the spherical head 10a is rotatably covered with a socket portion 13a at one end.
Are connected. The other end of the preparation joint 13 is a bolt-shaped portion 13b, and one end of the movable socket portion 13c is screwed to the bolt-shaped portion 13b.
3c, the distance between the socket 13a and the movable socket 13c can be adjusted.
When the position of c is determined, the movable socket 13c is fixed by tightening the fixing nut 13d at the position. Further, in each of the holes 6, a bolt 10 is connected to the movable socket 13 c of the preparation joint 13 by rotatably covering a spherical head 10 a at one end, and the other end of the bolt 10 is connected to each of the support frames 7. Nuts 14 are screwed into ends of bolts 10 protruding from the upper surface of the support frame 7 through the holes 9, and these nuts 14
Is tightened.

[0010] As described above, in the lower part of the preparation ring 5, the bolt 10 and the bolt 11 are provided in each hole 6 with the spherical head 10a and the socket part 11 rotatably covering the spherical head 10a.
a, the bending angle and direction can be freely bent and connected, and a plurality of bolts 1 in each hole 6 at a high position of the preparation ring 5.
0 and one or more preparation joints 13
Oa and the socket portion 13a or 13c rotatably mounted on the spherical head portion 10a freely bend and connect the bending angle and direction. Therefore, even if an arbitrary number of preparation rings 5 are stacked from the opening 3 of the manhole 2, the bolts 10 and 11 or the preparation joint 13 are connected to the through holes 6 provided at appropriate intervals on the outer peripheral edge of the preparation rings 5. The support frame 7 for covering the manhole cover (not shown) on the preparation ring 5 can be securely fixed to the road surface or the pavement road surface. When the support frame 7 is covered with a manhole cover, the manhole cover is substantially flush with the road surface.

The present invention is not limited to the above embodiment, but may be any suitable bolt member having one end screwed to each buried nut and an appropriate bolt member having a nut screwed to an end protruding upward through a hole in the support frame. And the members are passed through the through-holes of each of the preparation rings corresponding to the positions of the buried nuts, and in these through-holes, the butting ends of these bolt members or the butting ends of appropriate members interposed therebetween. May be connected as a so-called ball joint configuration including a spherical head and a socket portion rotatably covered with the spherical head.

[0012]

According to the first aspect of the present invention, a preparation ring having an upper surface inclined with respect to a lower surface is placed on an opening of a manhole, and a support frame of a manhole cover is further placed on the preparation ring. The embedding nut provided on the upper surface of the outer peripheral portion and the bolt members engaged with the support frame are passed through through holes provided along the outer peripheral edge of the preparation ring, and these are rotatable on the spherical head and the spherical head. These bolt members are easily connected regardless of the degree of inclination of the support frame or in any direction because the connection is made by a so-called ball joint configuration consisting of a socket portion that covers the socket. Thus, the support frame can be stably and firmly fixed according to the inclination of the road surface. In addition, there is no need to process the bolt member on site, and it can be easily fixed to anyone.

The invention according to claim 2 has substantially the same effect as the invention according to claim 1, except that the bolt having a spherical head and the bolt having a socket portion are connected at a position where the support frame is low in inclination. The bolts having two spherical heads and sockets at both ends are provided at the high slope of the support frame, and are connected by adjusting joints that can adjust the distance between the bolts. The connection can be made without fail along the through hole of the preparation ring.

[Brief description of the drawings]

FIG. 1 is a cross-sectional front view of an embodiment of the present invention.

FIG. 2 is a front view showing a connection state between a spherical head and a socket by two bolt members according to the embodiment of the present invention.

FIG. 3 is a front view showing a connection state between a spherical head and a socket part by two bolt members and a preparation joint according to the embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 1 ground surface 2 manhole 3 opening 4 embedded nut 5 preparation ring 6 through hole 7 support frame 8 pavement road surface 9 hole 10 bolt 10a spherical head 11 bolt 11a socket part 12 nut 13 preparation joint 13a socket part 13c socket part 14 nut

Claims (2)

[Claims] In a structure for fixing a support frame of a manhole cover along an inclined road surface, embedded nuts are provided at appropriate intervals along the outer periphery of a horizontal plane of an opening of a manhole, and embedded nuts are provided on the outer periphery of a horizontal plane of the opening of the manhole. A suitable number of preparation rings having an upper surface inclined with respect to the lower surface are stacked as appropriate, and a support frame of a manhole cover is placed thereon, and the upper surface of the support frame is adjusted to be substantially flush with the inclined road surface. A bolt member having one end screwed to the nut and a bolt member having a nut screwed to an end protruding to the upper surface through a hole in the support frame are passed through the through-holes of the respective preparation rings adjusted to the positions of the respective buried nuts. The butt end of these bolt members or the butt end of an appropriate member interposed between them in the through hole, respectively.
A support frame fixing structure for a manhole cover, characterized in that a spherical head and a socket portion rotatably covered with the spherical head are connected to each other. 2. A structure for fixing a support frame of a manhole cover along an inclined road surface, wherein embedded nuts are provided at appropriate intervals along an outer periphery of a horizontal surface of an opening of the manhole, and embedded nuts are provided on an outer periphery of a horizontal surface of the opening of the manhole. A suitable number of preparation rings having an upper surface inclined with respect to the lower surface are stacked as appropriate, and a support frame of a manhole cover is placed thereon, and the upper surface of the support frame is adjusted to be substantially flush with the inclined road surface. The spherical head at the other end of the bolt with one end screwed to the nut, and the socket at the other end of the bolt with the nut screwed to the bolt end protruding upward through the hole in the support frame, the position of each of the buried nuts Through the through-holes of each of the prepared rings, the sockets are rotatably covered on the spherical heads in these through-holes, and these are connected to each other. Then, embedded above Adjustment of the spherical head of the bolt with one end screwed to the nut and the spherical head of the bolt with the nut screwed to the bolt end protruding to the upper surface through the hole of the support frame, according to the position of each of the above embedded nuts Through the hole in the ring,
A supporting frame fixing structure for a manhole cover, wherein sockets at both ends in the through-hole are provided, and each of the adjusting joints whose length can be adjusted is rotatably covered and connected.