JPH0131625Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed for inspection and operation of underground facilities such as water control valves, fire hydrants, sewer inspection holes, hand holes for electricity and communication wiring installed on roads, etc. This invention relates to a height adjusting device for a receiving frame for a lid such as a manhole.

Traditionally, frames for covers such as manholes installed on roads have been adjusted and installed on top of the side blocks of the manhole so that the cover surface matches the road surface during construction. Therefore, when the road surface becomes high or heavy vehicles pass by, the receiving frame may sink along with the manhole, and the cover may become lower than the road surface. For this reason, the pavement around the receiving frame is peeled off to expose the receiving frame, and a raising material is inserted under the receiving frame to make the cover surface flush with the road surface. It is desired to do so. For this reason, various mechanisms have been proposed and installed that allow the lid receiving frame to be adjusted by simple operations.

However, when resurfacing a road surface, the inclination angle of the road surface often changes, so in order to adjust the support frame to the road surface, even with these support frames equipped with a height adjustment mechanism, it is necessary to place wedges on the underside of the support frame as before. This was not always satisfactory as it required insertion and adjustment.

The present invention has been devised to solve the above-mentioned drawbacks, and will be described with reference to embodiments shown in the drawings.

As shown in FIGS. 1 to 4, the height adjustment device according to the present invention includes a base 3 having an inclined V-shaped groove 5;
It has a bottom surface that is tapered at an angle equal to the inclination angle of the V-shaped groove 5 and that is in close contact with the V-shaped groove 5 and slides on the V-shaped groove 5 as the two shafts of the bolt rotate, and the top surface is also the bottom surface. Movable nut 1 that is symmetrical and has the same shape or hemispherical shape
and the V-shaped groove 5 is joined or integrally molded to the receiving frame 9.
It consists of a pedestal 3 having a mount 3 and a receiving frame mounting part 4 having a groove 6 which is positioned symmetrically with respect to the movable nut 1 and slopes in a V shape or an arc.
Attach the bolt 2 to the end of the shaped groove 5 or the groove 6 of the receiving frame mounting part 4.
Vertical wall 8 having a vertically long elongated hole 7 for mounting
It was assembled with the following.

That is, the movable nut 1 is placed on the V-shaped groove 5 of the base 3, the mounting part 4 is placed on the movable nut 1,
The bolt 2 is inserted into the elongated hole 7 of the vertical wall 8 and screwed onto the movable nut 1 to be assembled, and at this time the V-shaped groove and the sloped surface formed by the groove 6 widen outward from the vertical wall 8 in a ripple shape. It is expressed as follows.

The height adjustment device of the present invention is constructed as described above, and the mounting portion 4 is welded to the contact surface of the manhole or the like of the rectangular or circular ring-shaped receiving frame 2, or when the receiving frame 2 is molded as shown in FIG. Either the mounting part 4 is integrally molded and incorporated, or the conventional rectangular or circular annular receiving frame 2 is divided into two parts, the top and bottom of the lid 1 mounting part and the pedestal part that contacts the manhole etc.
The mounting part 4 of the height adjustment device is welded or integrally molded on the bottom surface of the lid mounting at the position that divides the annular receiving frame 2 into thirds, and the pedestal 3 is mounted on the top surface of the pedestal part. be welded or integrally molded to incorporate this height adjustment device.

Therefore, the receiving frame 2 incorporating the present height adjusting device
When it is necessary to raise the height of the support frame 9 in order to match the upper surface of the support frame 9 with the road surface due to road repairs, etc., or when it is necessary to adjust the slope,
By rotating the bolt 2 of the height adjustment device exposed on the inner wall surface of the receiving frame 9, the movable nut 1 moves from the position shown in FIG. 1 to FIG. 4, and the height of the receiving frame 9 can be adjusted. It is possible.

In addition, when assembling the height adjustment device into the receiving frame, it goes without saying that the entire height adjustment device must be enclosed and consideration must be taken to prevent paving material from entering the movable part of the movable nut of the height adjustment device. It is desirable to fill the device with oil such as grease.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view taken along line A-A in FIG. 2, FIG. 2 is a front view, and FIG.
4 is a sectional view with the movable nut shown in FIG. 1 in a different position, and FIG. 5 is a partially omitted sectional view showing how the receiving frame incorporating the device of the present invention is installed. 1... Movable nut, 2... Bolt, 3... Pedestal, 4... Receiver frame mounting part, 5... V-shaped groove, 6...
Groove, 7... Long hole, 8... Vertical wall, 9... Receiving frame, 1
0... Lid.

Claims (1)

[Scope of utility model registration request] a pedestal 3 having an inclined V-shaped groove 5, tapered at an angle equal to the inclination angle of the V-shaped groove 5;
A movable nut 1 which has a bottom surface that fits tightly into a shaped groove 5 and slides on the V-shaped groove 5 as the two shafts of the bolt rotate, and whose top surface is also symmetrical with the bottom surface and has the same shape or hemispherical shape, and a receiving frame 9.
It consists of a receiving frame mounting part 4 which is joined or integrally molded with the pedestal 3 having the V-shaped groove 5 and located symmetrically through the movable nut 1, and has a V-shaped or arcuate inclined groove 6, A height adjusting device for a receiving frame, in which a vertical wall 8 having a vertically long elongated hole 7 for attaching a bolt 2 is provided at the end of a V-shaped groove 5 of a pedestal 3 or a groove 6 of a receiving frame attachment part 4.