JP2522266Y2 - Underground structure frame tightening device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a receiving frame and a lower frame for preventing a receiving frame for receiving a lid for an underground structure such as a manhole from separating or moving from a lower frame such as a side lump. The present invention relates to an underground structure frame tightening device that is attached to a connecting portion of the frame and fixes the receiving frame and the lower frame.

[0002]

2. Description of the Related Art Conventionally, as means for connecting a receiving frame for receiving a lid main body such as a manhole and a side lump located at a lower portion of the receiving frame, there is described in, for example, Japanese Utility Model Laid-Open No. 58-103239. Thus, a fixing structure using a U-shaped fixing bracket has been proposed. The fixing structure of this manhole receiving frame is such that a lower piece of a U-shaped fixing bracket formed by bending a flat plate material is attached to the lower surface of the upper edge flange portion of the side mass, and a pressing bolt is vertically attached to the tip of the upper piece. It is movably provided, and the receiving frame and the side block are fixed by pressing the upper surface of the flange provided on the lower edge of the receiving frame with the tip of the pressing bolt.

[0003]

However, in the above-described manhole receiving frame fixing structure, since the U-shaped fixing bracket is formed of a flat plate, the fixing force is weak, and the manhole receiving frame is buried in the ground. Even in this case, the receiving frame may be displaced laterally from above the side lump due to the frictional force or vibration of the tire of the vehicle passing over the lid body. For the structure in which the lid body is fixedly attached to the receiving frame by bolts or the like, or the structure in which the lid body is attached in a semi-fixed state by taper fitting with the receiving frame, When the inside is filled with gas or sewage overflows, there is a problem that the lid body jumps up with the receiving frame due to the lifting pressure, and in order to increase this fixing force,
If a large number of fixing fittings are attached to the overlapping portion of the receiving frame and the side mass, the operation becomes extremely complicated. Further, the above-mentioned fixing bracket cannot raise the pressing bolt more than the distance between the lower piece and the upper piece. If a bulk adjustment ring or the like is arranged between the fixing rings, it may not be possible to connect with the fixing bracket, and if the number of used adjustment rings is reduced, the holding bolt must be lowered significantly. Therefore, there is a problem that the work becomes extremely complicated. Therefore, the tightening device can easily and firmly connect the receiving frame and the lower frame, and can be used irrespective of the number of intermediate members such as the adjustment ring and the thickness of the upper edge flange of the lower frame. Development is requested.

[0004]

SUMMARY OF THE INVENTION In order to satisfy the above-mentioned demands, the undersea structure frame tightening device of the present invention has an upper edge flange at an upper end of a lower frame buried underground. In a tightening device for connecting a lower end flange portion of a receiving frame disposed on the lower frame, a support member abutting on an upper surface of the lower end flange portion, and a substantially hook-shaped connecting member including a horizontal extension portion and a hanging extension portion. When,
A receiving member for receiving the lower surface of the upper edge flange portion,
The support member is fixed to the distal end of the horizontal extension of the connecting member, and a receiving member is attached to the hanging extension so as to be changeable in position. In addition, this receiving member can also be fitted into the groove formed in the lower end flange of the receiving frame such that it cannot tilt.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. The tightening device according to the present invention is attached to an overlapping portion of a cylindrical lower frame 1 installed buried underground and a receiving frame 2 provided above the lower frame 1.

[0006] The lower frame 1 described above, together with a receiving frame 2 to be described later, is subjected to, for example, a small-diameter inspection cylinder 3 raised from a joint portion (not shown) of a sewer pipe laid underground from impacts caused by vehicles passing therethrough. In order to protect it, it is installed buried in the ground so as to surround the upper end thereof. An upper edge flange 4 is provided outward at the upper edge, and a lower edge flange 5 is provided at the lower edge. It is provided outward. The lower frame 1 is placed so that the lower edge flange 5 is placed on a pedestal 6 provided in the ground so as not to sink.

The receiving frame 2 has an opening 7 on the upper surface, and a lower edge provided with a lower end flange 8 facing outward. The upper and lower ends communicate with each other, and the receiving frame 2 is disposed above the lower frame 1. In this state, the lower end flange 8 overlaps the upper surface of the upper edge flange 4 and the opening 7
Will be in a state of substantially matching the ground surface. And
A lid body 9 is attached to the opening 7 so as to be openable and closable.

[0008] Underground structure frame tightening device 10 of the present invention
Is a supporting member 11 for supporting the upper surface of the lower end flange 8 from above.
A connection member 12 for fixing the support member 11, and a receiving member 13 provided in the middle of the connection member 12 so as to be changeable in position and receiving the lower surface of the upper edge flange 4.

The support member 11 has a plate shape that is long in the lateral direction. In the embodiment shown in the drawings, the receiving frame 2 is cylindrical and the lower end flange 8 is annular, so that the support member 11 has an arc shape. Is fitted into the annular groove 8 'formed so as not to tilt. If the receiving frame 2 has a quadrilateral shape, the support member 11 may be a horizontally long linear plate.

In the embodiment shown in the drawings, the connecting member 12 is a substantially hook-shaped vertically long flat plate having a horizontal extending portion 14 and a hanging extending portion 15. A groove 1 with an open bottom that is fitted to the member 11 from above.
6, a mounting groove 17 is formed in the hanging extension portion 15 in the longitudinal direction along the length direction, and a plurality of inclined engaging grooves 18 are formed in parallel on the surface.

The receiving member 13 is a flat plate, and the lower edge of the upper edge flange 4 of the lower frame 1 is inclined downward, so that an upper edge is formed at one corner of the receiving member 13. Collar 4
Has an inclined surface portion 19 corresponding to the inclination of the lower surface of the lower surface, and an inclined protruding ridge 20 corresponding to the mounting groove 17 of the hanging extension portion 15 protrudes from one surface. Further, a screw hole 21 for a fastening tool is opened up and down on one side of the receiving member 13, and upper and lower bolts 22 are passed through the mounting groove 17 and screwed into the screw hole 21, thereby forming the receiving member 13. Is attached to the hanging extension portion 15 of the connecting member 12. The upper and lower bolts 22 prevent the receiving member 13 from rotating and fix the receiving member 13 to the connecting member 12 so that the receiving member 13 comes into close contact with the upper edge flange 4 of the lower frame 1. Therefore, any one of them may be a pin fixed to the receiving member 13 in a protruding state.

The tightening device 10 of the present invention has the above-described configuration,
At the time of construction, the inspection cylinder 3 raised from the joint of the sewer pipe is backfilled except for the upper end, and the lower frame 1 is
It is installed underground so as to be located at the upper part of the lower frame, and the receiving frame 2 is mounted above the lower frame 1. In this case, the support member 1 of the receiving frame 2
When the upper frame 1 and the upper edge flange 4 of the lower frame 1 are vertically overlapped,
The connecting member 12 in which the support member 11 is fitted in advance in the groove portion 16 and the support member 11 and the horizontal extension portion 14 are integrated by welding or the like is provided on the overlapping portion of the upper edge flange portion 4 and the lower edge flange portion 8,
At least about two of them are arranged so as to face each other in the radial direction, and when the inclined portion 19 of the receiving member 13 is positioned so as to contact the lower surface of the upper edge flange 4, the raised ridge 20 is fitted into the engaging groove 18. Then, the bolt 22 is passed through the mounting groove 17 of the hanging extension portion 15, and is firmly fixed to the screw hole 21 to fix the receiving member 13.

Therefore, in the tightening device 10 of the present invention, the upper surface of the lower end flange 8 is supported by the support member 11 from above, and the lower surface of the upper edge flange 4 is received and supported by the slope portion 19 of the receiving member 13. Since the member 11 and the receiving member 13 are integrated with the connecting member 12 and at least two or more of them are attached, the lower frame 1 and the receiving frame 2 can be separated or the receiving frame 2 can be separated from the lower frame 1.
It does not move out of place. In addition, even if the thickness of the upper edge flange 4 and the lower edge flange 8 is different, or even if a bulk adjusting ring or the like is to be used between them, the position of the receiving member 13 is extended downward of the connecting member 12. By appropriately setting the portion 15, the upper edge flange 4 and the lower edge flange 8 can be firmly integrated. When the plurality of tightening devices 10 are attached to the outside of the upper edge flange 4 and the lower edge flange 8 as described above, earth and sand may be back-filled in the outer peripheral portions of the lower frame 1 and the receiving frame 2 to pave the ground surface. .

Although the present invention has been described with reference to the embodiments of the drawings, the present invention is not limited to the above-described embodiments, but may be any method unless the configuration described in the claims for utility model registration is changed. Can be implemented. For example,
The support member 11 and the receiving member 13 may have any configuration depending on the configuration of the lower end flange 8 of the receiving frame 2 and the upper edge flange 4 of the lower frame. That is, when the lower surface of the upper edge flange portion 4 of the lower frame 1 is horizontal and parallel to the upper surface, the receiving member 13 has the slope portion 19
In this case, since the tightening device 10 of the present invention does not rotate in the direction in which the support member 11 and the lower end flange 8 of the receiving frame 2 come off, the tightening device 10 does not rotate. It is no longer necessary to form a groove 8 ′ in the lower end flange 8 of the receiving frame 2 and fit the support member 11 into the groove 8 ′ so that the support member 11 cannot tilt.

[0015]

In summary, according to the tightening device of the present invention, the upper edge flange of the upper end of the lower frame buried underground is connected to the lower edge flange of the receiving frame disposed on the lower frame. In the tightening device, a supporting member abutting on the upper surface of the lower end flange portion, a substantially hook-shaped connecting member including a horizontal extension portion and a hanging extension portion, and a receiving member for receiving a lower surface of the upper edge flange portion are provided. Since the supporting member is fixed to the distal end of the horizontal extending portion of the connecting member, and the receiving member is attached so that the position of the receiving member can be changed in the middle of the hanging extension, the upper edge flange of the lower frame and the lower edge flange of the receiving frame. It can be easily attached to the overlapping part with the part. And when this tightening device is attached, the upper edge flange and the lower edge flange are integrated, so that, for example, even when the pressure rises due to gas filling or sewage overflow inside the manhole, the receiving frame jumps up. Even if there is no accident, and even if the vehicle passes through the ground surface and vibrates, the receiving frame does not shift and move, so that no unnecessary accident occurs and the device can withstand long-term use. Further, since the tightening device is composed of a support member, a connecting member and a position-changeable receiving member, the receiving frame and the lower frame can be used in a circular or quadrilateral shape, and the upper edge flange of the lower frame and the lower end of the receiving frame can be used. It can be used even when the thickness of the flange is different or when a bulk adjusting ring etc. is interposed between them, it can be used for various types of underground structure frames, and it has high practical value Become

[Brief description of the drawings]

FIG. 1 is a front view showing a part of an embodiment of the present invention in cross section.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a schematic plan view.

FIG. 4 is a partial exploded perspective view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower frame 2 Receiving frame 4 Upper edge flange 5 Lower edge flange 7 Opening 8 Lower edge flange 9 Lid body 10 Tightening device 11 Support member 12 Connecting member 13 Receiving member 14 Horizontal extension 15 Hanging extension 16 Groove 17 Mounting groove

Claims (2)

(57) [Scope of request for utility model registration] 1. A tightening device for connecting an upper edge flange of an upper end of a lower frame buried in the ground and a lower edge flange of a receiving frame disposed on the lower frame, wherein the lower edge flange is provided. A supporting member abutting on the upper surface of the connecting member, a substantially hook-shaped connecting member composed of a horizontal extension and a hanging extension, and a receiving member for receiving a lower surface of the upper edge flange portion. An underground structure frame tightening device, characterized in that the support member is fixed to a distal end, and a receiving member is mounted so as to be changeable in the middle of the hanging extension. 2. The underground structure frame tightening device according to claim 1, wherein the support member is non-tiltably fitted into a groove formed in a lower end flange of the receiving frame.