JPS59192134A - Regulation of inclined angle of steel cover for manhole - Google Patents

Abstract

PURPOSE:To simply match a frame receiver and a steel cover with the slope of a road by a method in which a regulating ring is made up of a lower ring and an upper ring, and the lower ring and the upper ring are inclined relatively to each other. CONSTITUTION:A slant wall 2 is stacked up on a body 1 to form the torso of a manhole, a regulating ring 3 and a frame receiver 4 are stacked up on the slant wall 2, and a steel cover 5 is detachably attached to the frame receiver 4. The regulating ring 3 consists of a lower ring 3a and an upper ring 3b both of which are slightly inclined relatively to each other. By relatively turning the rings 3a and 3b, the contact positions of the rings 3a and 3b are varied, the frame receiver 4 and the steel cover 5 stacked on the upper ring 3b are inclined, and therefore, the frame receiver 4 and the steel cover 5 can be simply matched with each other with respect to the road surface 6.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an angle of inclination of the iron cover of a manhole installed on a road, which matches the slope of the iron cover with the road surface to prevent unevenness on the road surface. This relates to an adjustment method.

(Prior art) The road surface on which manholes are installed does not necessarily have to be flat, but may have a gentle slope, or a manhole may be installed on a parabolic slope where the center of the road surface is elevated. However, the installation conditions do not match between the sloped part and the upper part of the manhole, especially the non-sloped iron cover part, and the road surface is not flush, resulting in a step.

To prevent this, lift one side of relatively easy-to-handle members such as the receiving frame or adjustment ring of the iron cover stacked at the top of the manhole, align it with the slope of the road surface, and apply mortar, etc. to the joint. The entire structure is slanted so that the iron cover is flush with the road surface. This type of construction usually requires roads to be closed to traffic.
In order to avoid traffic jams on roads with heavy traffic, construction work is carried out at night when the traffic volume is low.

However, unlike other parts, it is not possible to cover the iron lid part that is exposed on the road surface with a lid plate, etc. to prevent direct weight from being applied to it. The road closure cannot be lifted due to the trench. Therefore,
This type of construction requires long-term traffic closures, which inevitably leads to traffic jams, and the area around the manhole cannot be backfilled, causing the subsequent construction to be extended in its entirety. Furthermore, lifting one side of a member or filling it with mortar requires on-site work, which requires skill, and while shortening the construction period is desired, the workability is poor and can further delay the progress of construction. There are drawbacks.

(Object of the Invention) In view of the above-mentioned circumstances, the present invention has been made in order to eliminate the above-mentioned drawbacks. This invention attempts to provide a method for adjusting the inclination angle of an iron lid.

(Structure of the Invention) The present invention, which has been made to achieve the above object, is directed to a sliding surface of a stacking member consisting of a slanted wall of a manhole component and a holder frame of an iron cover, or a slanted wall and a holder frame of an iron cover. A relatively slight slope is provided on the contact surfaces of the stacking members consisting of adjustment rings interposed between the A method for adjusting the inclination angle of an iron cover in a manhole, characterized in that the inclination angle of the iron cover can be changed with respect to Therefore, simply by turning the stacking member and changing the position of the mating surface, the top surface, that is, the surface of the iron lid, will be tilted9, and it can be easily made flush with the slope of the road surface. This is possible.

(Embodiment) Next, the present invention will be explained in more detail with reference to the illustrated embodiment. First, in the first embodiment shown in FIGS. 1 to 3, 1 is a frame forming the body of the manhole; A slanted wall 2 is stacked on top of the frame, and an adjustment ring 3 and a receiving frame 4, which are stacking members, are stacked on top of the slanted wall 2 to complete the upper part of the manhole. An iron lid 5 is removably fitted into the receiving frame portion 4.

The adjustment ring 3U is divided into upper and lower halves, and a lower ring 3a
The mating surfaces between the upper ring 3b and the upper ring 3b are formed with a relatively slight slope. , the angle of this slope is 5
Change the abutting position of the mating surfaces by about ±2°,
The maximum angle of inclination when the two come to the exact opposite position is 6 to 14 degrees. For example, as shown in FIGS. 2(A) and 2(B), if the angle θ of the inclined surface is 5°, when the upper ring 2b is rotated 180° with respect to the lower ring 2a, the upper surface of the upper ring 2b will change. The inclination angle θ2 becomes maximum and becomes θ2−IO0. Therefore, by relatively rotating and gradually changing the contact position between the lower ring 2.a and the upper ring 2b, the angle of θ2 can be gradually changed in the range of 0 to 10 degrees9. You can arbitrarily choose between them. The receiving frame part 4 and the iron lid 5 stacked on the upper ring 2b are easily tilted along the slope of the upper surface of the adjustment ring 3 to a slope of 1 to 6 degrees on the road surface as shown in FIG. It can be adjusted to

By adjusting the slope of the road surface 6 in this way, the steps a and b at the front and back of the slope, which naturally occur during normal construction, are eliminated, as shown by the imaginary line in FIG.
becomes flush with the road surface 6.

In another embodiment shown in FIG. 4, the receiving frame portion 4 is stacked directly on the upper surface of the inclined wall 2 without using the adjustment ring, which is one of the stacking members of the previous embodiment. In this case as well, an inclined surface similar to that in the first embodiment is formed on the mating surfaces of the inclined wall 2 and the receiving frame portion 4, and the abutting surfaces are rotated relative to each other in stacking. By gradually changing the angle, the upper surface of the receiving frame portion 4 is gradually changed to a predetermined angle. The slope can be changed arbitrarily. Furthermore, forming the mating surface with a slight inclination means that the mating surface is elliptical, although it is so slight that it cannot be seen with the naked eye, and the maximum misalignment occurs when rotated 90 degrees. This difference can be accommodated by 5 degrees depending on the thickness of each stacked member.

(Effects of the Invention) As explained above, the method for adjusting the angle of an iron cover according to the present invention provides a relatively slight inclined surface on all nine of the stacked members stacked at the top of the manhole. By rotating the member, the iron cover can be easily tilted in a desired direction at a desired angle, and even if the road surface on which the manhole is installed has an inclination, the iron cover can be tilted in accordance with the inclination. It has the excellent effect of being able to be installed on an inclined plane quickly and significantly shortening the construction period.

Furthermore, the iron lid can be easily tilted by simply rotating the stacking member, and since no mortar is used, the area around the iron lid can be backfilled immediately, and the road can be paved or repaired immediately, eliminating traffic closures. It also has the excellent effect of greatly reducing the period or time required for construction work, and eliminating traffic congestion caused by this type of construction work.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing only the main parts of a manhole according to a first embodiment of the method of the present invention, and FIGS.
) is a schematic diagram showing the state of changing the angle of the adjustment ring, which is one of the stacking members applied to the same method, and Figure 3 shows an example of actual use, in which the adjustment ring is rotated and the iron cover is moved to the slope of the road surface. FIG. 4 is a vertical cross-sectional view of the main parts showing another embodiment. ■・・・・・・・・・Body 2・・・・・・Slanted wall 3・・・Adjustment ring 3a・・・Lower ring 3b・・・Upper ring 4・・・・・・・・Receiver frame part 5 of the iron lid ・・・・Iron lid a+b step part Patent applicant Yamagami High Pressure Concrete Co., Ltd. Figure 1! ! ! Figure 2

Claims (1)

[Claims] The mating surface of the stacking member consisting of the slanted wall of the manhole component and the receiving frame of the iron cover, or the mating surface of the stacking member consisting of the adjustment ring interposed between the slanted wall and the receiving frame of the iron cover. A relatively slight slope is provided, and by rotating these stacking members, the contact position of the mating surfaces can be shifted, and the angle of inclination of the iron cover relative to the slope of the road surface can be changed. A method for adjusting the inclination angle of an iron cover in a manhole.