JPS5948258B2 - Fixing method and fixing device for manhole receiving frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and device for fixing a receiving frame for a manhole that can sufficiently withstand large vibrations, and particularly relates to a diagonal wall pipe that constitutes a manhole and an adjustment ring that is stacked in order on the diagonal wall pipe that constitutes the manhole. The present invention relates to a method for fixing a manhole receiving frame, in which a washer and a lid receiving frame are integrally constructed by interconnecting each other via predetermined bolts, and a device used in this method.

Conventionally, in this type of prefabricated manhole, the adjustment ring and support frame were stacked on top of the inclined wall pipe and fixed with mortar, but in areas with heavy traffic and strong vibrations, the support frame became unstable. There was a risk that it would come off.

In addition, in order to improve these conventional drawbacks, for example,
A manhole with a structure as shown in Publication No. 8777 has also been developed, but this technology involves forming recesses and protrusions that can fit into the recesses on the upper and lower surfaces of each concrete ring, and connecting these to each other. This technology involves intervening a waterproof adhesive at the joints, and as a result, all the rings and inclined wall pipes were not interconnected and constructed as a single piece, so they could withstand the harsh vibrations of road traffic. It had the disadvantage that it could not withstand sufficiently.

The method and device according to the present invention relate to a completely new method and device for fixing a receiving frame, which have been developed in view of these conventional drawbacks.

One embodiment of the method and apparatus according to the present invention will be specifically explained with reference to the drawings. In FIGS. 1 to 5, 1 is a prefabricated manhole, which includes a frame block 2, a straight wall pipe 3, It is constructed by stacking a diagonal wall tube 4, an adjustment ring 5, a lid receiving frame 6, a lid 7, etc. in this order.

Next, 8 is an embedded plug (insert anchor) whose lower part is bifurcated and has a screw inside, and is embedded in the upper edge of the inclined wall tube 4.

A ring sleeve 9 is embedded in a side wall of the adjustment ring 5 in a vertically bored through hole.

Reference numeral 10 denotes a ring bolt having a protrusion 11 at its lower end that can be screwed into the upper part of the embedded plug 8, and is inserted into the sleeve 9.

Reference numeral 12 denotes several adjustment washers, each of which is particularly provided with an eccentric hole 13 as shown in FIG.

Further, the lower collar 14 of the receiving frame 6 is particularly provided with an eccentric bolt hole 15 as shown in FIG.

Further, reference numeral 16 denotes a lid bolt, which has both sides cut to have a small diameter as shown in the figure, and is constructed so that this small diameter portion can be inserted into the eccentric hole 13 of the adjustment washer 12 and the eccentric bolt hole 15. It is constructed so that it can be screwed onto the upper end of the.

In the figure, 17 is a spring washer, 18 is a nut, 19
is mortar provided around the adjusting washer 12.

In carrying out the method of the present invention, the embedded plug 8 and the ring sleeve 9 are buried in the inclined wall pipe 4 and the adjustment ring 5 respectively in advance, and when constructing the manhole 1 on site, When the adjusting ring 5 having a predetermined height is stacked on the wall pipe 4, the ring bolt 10 is inserted into the ring sleeve 9 of the adjusting ring 5, and the protrusion 11 at the lower end of this bolt 10 is inserted into the inclined wall pipe 4. After screwing into the upper part of the embedded plug 8 and finally adjusting the height of the receiving frame 6 and the lid 7 attached to it using the adjusting washer 12, the lower flange 14 of the receiving frame 6 is placed on the washer 12. and finally remove the lid bolt 16.
into the bolt hole 15 of the lower collar 14 and the eccentric hole 13 of the washer 12, and tighten the nut 18 of the lid while utilizing the eccentricity of the hole 15. Therefore, the inclined wall tube 4, the adjustment ring 5, and the receiving frame 6 can be connected integrally.

The ring sleeve 9 and ring bolt 10 in the above embodiment can be omitted if necessary. In this case, the bolt 16 is inserted directly into the through hole of the adjustment ring 5, and the lower end of this bolt 16 is inserted into the embedded plug. It is also possible to configure it by directly screwing it into 8.

As described above, the method according to the present invention includes embedding an embedded plug in the inclined wall pipe, drilling a through hole in the adjustment ring, or embedding a ring sleeve in the through hole, and installing a bolt hole on the adjustment ring. The adjusting washer and the receiving frame are stacked one on top of the other in this order, and the inclined wall tube, adjusting ring, adjusting washer, and receiving frame are connected to each other via bolts to form an integral structure.
Even if the manhole is constructed in a place where vibrations are extremely high due to severe traffic conditions, it has the characteristic of being able to withstand sufficiently large vibrations.

Furthermore, since the fixing device according to the present invention is composed of a combination of the above-mentioned embedded plug, bolt, several adjustment washers with holes, and a receiving frame having a lower flange with holes drilled therein, this etc. are mass-produced in a factory, brought to the site, and the entire installation and disassembly of the connecting acid is extremely easy, and there is no risk of the connecting fixings loosening even if subjected to large vibrations. It has characteristics.

Furthermore, as shown in the above embodiments, when eccentric holes are bored in the receiving frame and the adjustment washer, loosening due to vibration can be more reliably prevented by utilizing the eccentric holes.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a manhole, and FIGS. 2 to 5 are enlarged explanatory diagrams of main parts of an apparatus for carrying out this method. 4 is a diagonal wall pipe, 5 is an adjustment ring, 6 is a receiving frame, 8 is an embedded plug,
9 is a ring sleeve, 10 is a ring pole) 1 and 12 are adjusting washers, 13 and 15 are eccentric holes, and 16 is a lid bolt.

Claims (1)

[Scope of Claims] 1. In an assembly manhole constructed by sequentially stacking a building block, a straight wall pipe, a diagonal wall pipe, an adjustment ring for height adjustment, a lid receiving frame, a lid, etc., the upper part of the diagonal wall pipe An embedded plug is embedded in the wall, a through hole is formed in the vertical direction of the side wall of the adjustment ring through which a bolt can be inserted, and the ring bolt is inserted into the through hole and the lower end of the ring bolt is screwed into the embedded plug. Next, an adjustment washer and a receiving frame each having an eccentric hole are stacked on top of the adjusting ring in order, and a lid bolt with both sides cut is inserted into the eccentric hole of the adjusting washer and receiving frame, and the lid is closed. The lower end of the bolt is screwed onto the ring bolt, and the lid bolt is positioned at the eccentric portion of the eccentric hole, and a nut is screwed onto the upper portion of the lid bolt to form a receiving frame.
A method for fixing a receiving frame for a manhole, characterized in that a washer and an adjustment ring are integrally installed and fixed to a diagonal wall pipe. 2. An embedded plug embedded in the upper wall of the inclined wall pipe, a ring bolt that is inserted through the adjustment ring and whose lower end can be screwed into the embedded plug, a lid bolt that can be screwed into the ring bolt, and an eccentric A fixing device for a manhole receiving frame consisting of a combination of several adjustment washers having holes and a receiving frame having an eccentric hole in the lower flange.