JPH0419083Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a receiving frame structure for supporting a lid main body of a lid for an underground structure, and specifically relates to a receiving frame structure whose volume can be adjusted.

In addition, the "underground structure cover" as used in the specification of this application refers to a large iron cover, a manhole cover, and a sewage basin cover that can be opened and closed to open and close openings connecting underground objects in sewers, underground structures, etc., and the above ground. , openable and closable utility ditch iron covers to protect underground facility equipment and underground wiring in electric power and communications; iron covers for power transmission and distribution; A general term for fire hydrant lids, air valve lids, water control valve lids, gate valve lids, water meter lids, gas piping lids, etc. that function as opening/closing doors.

[Conventional technology] Conventionally, when resurfacing road surfaces that have been worn out by vehicle traffic, etc., existing underground structure covers have been raised or lowered in order to eliminate the level difference between them and the new road surface. Volume adjustment work is being carried out.

Various configurations of receiving frame structures have been proposed to facilitate this volume adjustment work.

For example, in Utility Model Application Publication No. 57-197540,
A shelf formed on the inner periphery of the upper end of the lower box on which the receiving frame is placed via the annular raising plate, an elevating screw rod that passes through the shelf and the annular raising plate and comes into contact with the lower surface of the receiving frame; A volume adjustment structure for a receiving frame is disclosed in which a plurality of annular raising plates and a plurality of tightening bolts for connecting the receiving frame are provided.

For the volume adjustment structure of this receiving frame, first loosen the nuts that are screwed onto each tightening bolt and contact the lower surface of the shelf of the lower box to a length longer than that required for volume adjustment, and then By rotating the elevating screw rod, the receiving frame is lifted as the tip of the elevating screw rod rises, and the annular elevating plate is inserted into the gap created between the receiving frame and the annular elevating plate or the lower box. , bulk adjustment work was being carried out.

[The problem that the idea aims to solve]

However, in order to adjust the volume of the receiving frame having the above-mentioned configuration, the operator must remain near the upper end of the manhole interior, loosen the nuts of each tightening bolt, rotate each lifting screw lever, and then There was a problem that the annular raising plate had to be inserted, which required time and effort and was also dangerous.

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a receiving frame structure for a cover for an underground structure that allows for easy volume adjustment work from above ground when resurfacing the road surface. do.

[Means to solve the problem]

In order to achieve the object, the present invention provides a receiving frame structure for an underground structure cover in which a receiving frame for an underground structure cover is connected to a lower pipe by a connecting bolt, and the connecting bolt is provided in a horizontal part of the receiving frame. a level adjustment plate and a head of the connecting bolt, which are inserted into the through hole, and the lower part of the connecting bolt is screwed into a nut buried in the lower box, and further rotatably fixed to the connecting bolt. It is characterized in that the horizontal portion is sandwiched between the lower surface and the lower surface.

[Effect]

When the connecting bolt whose head is located on the receiving frame is rotated, the connecting bolt is raised by threading into the nut buried in the lower box, and the level adjustment plate attached to the connecting bolt is accordingly raised. Since it rotates and rises as one unit, the horizontal lower surface of the receiving frame is pressed and the receiving frame is lifted. Furthermore, when the connecting bolt is rotated in the opposite direction, the lower surface of the head of the connecting bolt presses the receiving frame, so that the receiving frame is pushed down.

〔Example〕

Hereinafter, the features of the present invention will be specifically explained based on the embodiments shown in the drawings.

FIG. 1 is a sectional view showing the main parts of the receiving frame structure of this embodiment.

The lower pipe 2 in this embodiment has a nut 5 embedded in its inner circumferential portion to be screwed into the connecting bolt 1. In addition,
If the plate material 10 is attached to the inner periphery of the lower part of the lower chute 2 with the bolts 10a in such a manner that it protrudes from the lower end of the lower chute 2, the work of arranging the lower chute 2 on the fume pipe 9 can be done accurately and easily. Become.

The connecting bolt 1 that is screwed into the nut 5 has a head 1a that contacts the upper surface of the inner flange ₄₁ of the receiving frame 4 via a washer 11, and is level-adjusted to a position facing the lower surface of the inner flange ₄₁ . The plate 12 can be fixed.

That is, as shown in the perspective view of FIG. 2, this connecting bolt 1 has a parallel surface 1b for fixing the level adjustment plate 12 at a position where the inner peripheral flange ₄₁ of the receiving frame 4 is held between the head 1a and the head 1a. On the other hand, as shown in the perspective view in FIG. 12
A screw hole 12b into which a fixing screw 13 is screwed is bored in a direction substantially perpendicular to a. Therefore,
After inserting the connecting bolt 1 into the through hole 7 of the inner peripheral flange ₄₁ , the level adjustment plate 12 is inserted into the cut groove 12a.
Fit it onto the parallel surface 1b of the connecting bolt 1 from the part,
By screwing the screw 13 into the screw hole 12b, fixing can be achieved extremely easily. Also,
Once fixed, the level adjustment plate 12 meshes with the parallel surface 1b formed on the connecting bolt 1 and is supported by the stepped portion between the threaded portion of the connecting bolt 1 and the parallel surface 1b and the screw 13. Even when the lower surface of the inner peripheral flange ₄₁ is pressed, the connecting bolt 1 will not fall off.

Further, the hollow portion 3 on the lower surface of the receiving frame 4 is provided with an inner rib 4 ₂ having a protrusion 4 ₃ formed at the lower end. The projections 4 ₃ of the inner surface ribs 4 ₂ fit into the holes 8 provided in the volume adjustment ring 6 when the volume adjustment ring 6 is interposed between the receiving frame 4 and the lower pipe 2 depending on the condition of the road surface R. The volume adjustment ring 6 is fitted in and fixed in place.

Next, how to use this receiving frame structure will be explained.

When changing the installation height of the receiving frame 4 according to the height of the road surface R changed due to resurfacing, etc., first prepare a volume adjustment ring 6 according to the changed height of the road surface R. . Then, by rotating the connecting bolt 1, the level adjustment plate 12 is brought into contact with the lower surface of the inner peripheral flange ₄₁ of the receiving frame 4, and the receiving frame 4 is raised. In this state, the protrusion 4 ₃ of the inner rib 4 ₂ is inserted into the hole 8
It is placed on the lower chamber 2 of the volume adjustment ring 6 in such a positional relationship that it fits into the volume adjustment ring 6. Next, by rotating the connecting bolt 1 in the opposite direction, the head 1a of the connecting bolt 1 is brought into contact with the upper surface of the inner circumferential flange ₄₁ of the receiving frame 4, and the receiving frame 4 is lowered, and the inner surface rib ₄₂ increases the bulk. Fix the adjustment ring 6 in place. As described above, by using the volume adjustment ring 6 that corresponds to the changed height of the road surface R, the upper surface of the receiving frame 4 can be made to match the height of the road surface R after the change.

Moreover, since the receiving frame 4 is supported by the level adjustment plate 12 during the volume adjustment work, the receiving frame 4 can be kept stationary with a space provided between it and the lower basin 2.
Therefore, the receiving frame 4 is made to stand still at a position that matches the height of the new road surface R, its inner periphery is sealed with adhesive tape, etc., and cement mortar or the like is applied to the space between the receiving frame 4 and the lower mound 2. If the pouring method is adopted, there is no need to use the volume adjustment ring 6 mentioned above.
It is possible to always match the height of the road surface R.

In the above example, the structure is such that the connecting bolt 1 is attached to the inner peripheral flange ₄₁ of the receiving frame 4, so there is no need to excavate the pavement around the receiving frame 4, and there is no need to cover the connecting bolt 1 with earth and sand. Therefore, the volume adjustment work can be easily carried out over a long period of time. However, it is of course possible to adopt a structure in which the connecting bolt is attached to the outer periphery of the receiving frame without being restricted by this.

[Effect of idea]

As explained above, the present invention provides a receiving frame structure for an underground structure cover in which a receiving frame for an underground structure cover is connected to a lower pipe by a connecting bolt, and the connecting bolt is provided in a horizontal part of the receiving frame. A level adjustment plate that is inserted into the through hole, the lower part of the connecting bolt is screwed into a nut buried in the lower box, and is rotatably fixed integrally to the connecting bolt, and the lower surface of the head of the connecting bolt. Since the horizontal part is held between the two, there is no need for the worker to enter the manhole when adjusting the volume, and the volume of the receiving frame can be adjusted by simply engaging the tool from the ground with the head of the connecting bolt and rotating it. Work can be done easily.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of the receiving frame structure according to the embodiment of the present invention, and FIG. 2 is a perspective view showing an example of a connecting bolt used in the receiving frame structure.
FIG. 3 is a perspective view of a level adjustment plate fixed to the connecting bolt. 1... Connecting bolt, 1a... Head, 1b... Parallel surface, 2... Lower box, 3... Hollow part, 4... Receiving frame,
4 ₁ ... Inner flange (horizontal part), 4 ₂ ... Inner rib, 4 ₃ ... Protrusion, 5 ... Nut, 6 ... Volume adjustment ring, 7 ... Through hole, 8 ... Hole, 9 ... Huyum tube, 10 ... Plate material, 10a ... Bolt, 11
... Washer, 12 ... Level adjustment plate, 12a ... Cut groove, 12b ... Screw hole, 13 ... Screw.

Claims (1)

[Scope of utility model registration request] In a receiving frame structure for an underground structure lid in which a receiving frame for an underground structure lid is connected to a lower pipe with a connecting bolt, the connecting bolt is inserted into a through hole formed in a horizontal part of the receiving frame, and the connecting bolt The lower part of the horizontal part is screwed into a nut buried in the lower hole, and the horizontal part is held between a level adjustment plate rotatably fixed integrally to the connecting bolt and the lower surface of the head of the connecting bolt. Features a receiving frame structure for covers for underground structures.