JPH0261577B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lightweight assembly manhole that can be mass-produced in advance at a factory and easily assembled on site. A cylindrical frame block with pre-drilled holes for inserting an inflow pipe and an outflow pipe, a cylindrical straight wall block, and an eccentric cylindrical single-sided inclined block are stacked one after another, and a hollow disk is placed at the upper end of the single-sided inclined block. Stack the adjustment ring, adjustment washer, and lid holder frame in this order, and then stack the bottom plate block,
The outer circumferential surfaces of the frame block, straight wall block, and single-sided inclined block are respectively connected to each other via a connecting plate, and the base part of the adjustment ring, adjustment washer, and lid holder frame is embedded in the single-sided inclined block and extends upwardly. The present invention relates to an assembled manhole characterized in that the manholes are connected to each other by vertically protruding anchor bolts or the like.

Conventional manholes of this type were generally constructed by making a formwork on site and pouring concrete into it, but this was difficult to do in a narrow space, and it took many days to construct, resulting in high costs. At the same time, it has the disadvantage that it is difficult to construct manholes of good quality due to the poor working conditions for manhole construction at the site.

The present invention is a technology developed in view of the drawbacks of the prior art, and in particular, it is possible to manufacture in a factory a frame block or a straight-walled pipe block, etc., which are pre-drilled with holes for inserting inflow pipes, outflow pipes, etc. The present invention relates to an assembly manhole characterized in that the manholes are stacked one after another on site, and are then tightly connected to each other via a fastening plate or the like.

To specifically explain one embodiment of an assembled manhole according to the present invention with reference to the drawings, 1 is a donut-shaped hollow disc-shaped bottom block, which is installed on a foundation stone 2 provided at the bottom of the manhole hole. ing. Reference numeral 3 denotes a cylindrical frame block installed on the bottom block 1, and a hole 4 for inserting an inflow pipe and a hole 5 for inserting an outflow pipe are pre-drilled in the side wall of the block. Reference numeral 6 is a cylindrical straight-walled block, and 7 is an eccentrically inclined cylindrical one-sided inclined block. These blocks 6 and 7 are stacked in order on the upper end of the frame block 3. Reference numeral 8 denotes a hollow disc-shaped adjustment ring, 9 a rectangular adjustment washer made of a steel plate, and 10 a lid receiving frame to which the lid 11 can be attached. It's piled up.

Next, the blocks 3, 6, 7 and the adjustment ring 9
Recessed grooves 12 are formed around the entire circumference on the inner peripheral edges of the upper ends, and recessed grooves 12 that can fit into the recessed grooves 12 are formed on the inner peripheral edges of the lower ends of the blocks 6, 7 and the adjustment ring 9. A convex line 13 having a smaller area is protruded over the entire circumference, and when the convex line 13 is fitted into the groove 12, a gap 14 is formed between the two. Numerals 15 and 16 are binding plates, respectively, which are attached to the outer circumferential surfaces of the blocks 1, 3, 6, and 7 via binding bolts 17 to tightly connect them to each other. Also, 18 is block 3,
This is a step for lifting and lowering that is attached to the inner peripheral wall surface of numbers 6 and 7. Reference numeral 19 denotes an anchor screw bolt erected from the upper edge of the block 7, the base of which is buried and fixed in the upper part of the block 7, and is screwed into a ring bolt 20 buried in the adjustment ring 8, thereby locking the ring. 8 is connected to block 7. The adjustment washer 9 and the lid holder frame 10 are connected to the adjustment ring 9 via a bolt 21, a lock washer 22, a nut 23, etc., which are screwed into the ring bolt 20, respectively.
The connection is fixed. 24 is adjustment washer 9
It is a mortar placed around the A rubber ring 25 and a sealing material 26 are provided in the gap 14 formed by the grooves 12 and grooves 13 of the blocks 3, 6, 7 to completely seal the joints of the blocks 3, 6, 7. It is constructed in a watertight manner.

Concrete 27 is poured on top of the bottom block 1, thereby forming blocks 1 and 3 and foundation stone 2.
and the inner bottom surface of the manhole.

28 is an inflow pipe, and 29 is an outflow pipe, the ends of these pipes are inserted into holes 4 and 5 of the main body block 3, and are fixed around the holes 4 and 5 by joint material 30. There is.

The assembled manhole according to the present invention has a bottom block,
A frame block with holes for inflow and outflow pipes drilled in advance, a straight-wall block, and a one-sided slanted block are produced at the factory and assembled on-site, which greatly simplifies construction work and significantly reduces the construction period. It is possible to shorten the blocks considerably, and mass-produce products with stable quality at low cost. Also, since each block's outer circumferential surface is fastened with a fastening plate, the mutual connection is strong, and each block is The concave grooves and the protrusions are interlocked and joined together, and the gap formed by these is provided with a rubber ring and sealing material, so the joint can be kept watertight, and the bottom plate block When a donut plate is used, by pouring concrete into it, the bottom block, foundation stone, and lower part of the frame block can be integrally connected, and the bottom of the manhole can be formed at the same time. It is.

[Brief explanation of the drawing]

FIG. 1 is an explanatory partial cross-sectional view showing the constituent parts of the manhole of the present invention, and FIG. 2 is a vertical cross-sectional view after the assembly is completed. 1, 3, 6, 7 are blocks, 8 is an adjustment ring, 10 is a lid holder frame, 11 is a lid, 14 is a gap, 1
5, 16 are binding plates, 18 are steps, 20
is a ring bolt, 25 is a rubber ring, 26 is a sealing material, and 27 is concrete.

Claims (1)

[Scope of Claims] 1. A cylindrical frame block in which holes for inserting an inflow pipe and an outflow pipe are pre-drilled on the disc-shaped bottom block, a cylindrical straight-walled block, and an eccentrically inclined cylindrical one-sided inclined block. are stacked in order, and a hollow disc-shaped adjustment ring, an adjustment washer, and a lid holder frame are stacked in order on the upper end of the one-sided inclined block, and the bottom plate block, main body block, straight wall block, and one-sided inclined block are fastened together via the fastening plate and bolts. The outer circumferential surfaces of the adjusting rings, adjusting washers, and lid holder frames are each tightened by means of anchor bolts whose base portions are buried in the single-sided inclined block and which protrude upwardly. Features an assembled manhole. 2. A notched groove is formed on the inner circumferential edge of the upper end of each block over the entire circumference, and a predetermined gap is formed between the block and the inner circumferential edge of the lower end of each block and the adjustment ring so that the block can be fitted into the notched groove and this groove is formed. 2. The assembly manhole according to claim 1, further comprising a protruding strip having a shape that can be formed.