KR100701324B1 - Assembly type manhole - Google Patents

Abstract

The present invention relates to a prefabricated manhole excellent in assembly and workability, the lower sphere corresponding to the bottom of the manhole, at least one or more vertical spheres stacked on top of the lower sphere for height adjustment of the manhole, and In the prefabricated manhole comprising a top slab assembled at the top and the manhole cover is seated, a plurality of grooves are formed in the lower outer periphery of the top slab and the vertical sphere in a radial direction, and the bottom surface of the groove from the groove Through-holes are drilled to the lower end, and bolting holes are formed at the upper ends of the lower and vertical spheres to communicate with the through-holes when assembling the manholes, and are fastened to the bolting-holes through the through-holes of the grooves. Steps are formed in the lower sphere, the vertical sphere and the upper slab to be connected And the upper end is formed with a groove of semi-circular concave chakseol The sandwiching the packing surface as a base for the configuration.

According to the present invention, the binding force between the spheres is firm, excellent in the assembly and construction properties compared to the conventional, excellent water-tightness of the joints between the spheres, the effect of preventing the leakage of waste water is expressed.

Prefabricated Manhole, Upper Sphere, Lower Sphere, Top Slab, Groove, Rubber Packing

Description

Assembly type manhole

1 is an exploded perspective view showing a conventional prefabricated manhole.

2 is a partially exploded perspective view showing a prefabricated manhole according to the present invention

3 is an assembled cross-sectional view according to FIG. 2.

<Code Description of Major Parts of Drawing>

100 ... lower body 120,220,320 ...

122,222,322 ... Mounting groove 140,240 ... Bolting hole

200 ... Spherical sphere 230 ... Home

232,332 through-through 300 ... top slab

400 ... manhole cover 500 ... packing

The present invention relates to a prefabricated manhole, in particular, in the prefabricated manhole that can be height-adjusted according to the buried depth of the manhole by connecting at least one vertical sphere laminated between the upper slab and the lower sphere connection / The present invention relates to a prefabricated manhole that facilitates fixing and improves workability and assemblability of the manhole, and prevents leakage of waste water from the gap between the joint by inserting a packing into the joint.

In general, a manhole is a general term for a facility that allows people to enter and exit for maintenance and repair of various pipelines installed underground. Such a manhole is a channel for supplying various sewage, living and industrial water, or a pipeline for various telecommunications. medium

It is installed at regular intervals.

Conventional manholes are largely divided into two methods: one-piece construction using direct formwork and two methods of laminating and assembling ready-made products standardized by KS. Due to the problems caused by the difference in depth, the situation is directed toward a construction method of laminating and assembling the ready-made products according to KS standards.

Figure 1 shows a prefabricated manhole to build a manhole by laminating the ready-made product of the construction method of the manhole as described above.

As can be seen through the drawing shown in the conventional prefabricated manhole, the upper step is formed, the upper is formed in an open cylindrical shape, the lower sphere (1) formed with one or more tube insertion opening (10) on the side ; At least one vertical sphere (2) seated and stacked on the stepped portion (12) at the top of the lower sphere (1); Including a component such as; upper plate slab (3) is seated on the upper portion of the vertical sphere, eccentrically penetrating, and the manhole cover (4) is seated at the top of the hole (30) consist of.

The circumferential sidewall of the lower sphere 1 is formed with a bolting hole 14 in the vertical direction, and inside the semi-circular invert (not shown) is formed to prevent the sedimentation of waste water and smoothly flow. In addition, lower recesses 22 and 32 of the shape corresponding to the step are formed at the lower end of the inner surface of the vertical sphere 2 and the upper slab 3, and the outer peripheral sidewalls of the vertical sphere 2 and the upper slab 3 are formed. A plurality of bolt through holes 24 and 34 are drilled in the vertical direction, and bolting holes 14 formed in the bolting holes 24 and 34 and the lower sphere of the upper slab 3 and the vertical sphere 2 during assembly. ) Is laminated so as to communicate with each other, and then assembly is completed by inserting long bolts B and connecting the spheres.

However, in the conventional prefabricated manholes, the bolts and the vertical spheres and the through-holes of the upper slabs of the lower spheres are aligned with each other so that the vertical spheres and the upper slabs of the lower spheres are sequentially stacked as described above. As it is a structure that connects long bolts, it is impossible to assemble bolts even if the through-holes are slightly twisted between the spheres.To match the through-holes, the upper slab and the vertical spheres are lifted again by a crane or the like, and then laminated again. There is a hassle of having to match them. As a result, there is a problem in that the construction of the manhole is degraded and a considerable time is consumed in assembling, and the connection between the spheres is made as one long bolt, so that the strength of the joint after assembly is reduced.

In addition, in the related art, a gap is generated in the joint due to the tolerance of the locking jaw and the lower recess when stacking the spheres, and contaminates the ground by leaking the waste water in the manhole.

The present invention has been made in view of the above-described conventional problems, to form a groove in the radial direction in the lower outer periphery of the vertical sphere and the upper slab to provide a space according to the bolting operation and in the vertical direction with the groove The purpose of the present invention is to provide a prefabricated manhole in which through-holes for bolting are formed to easily assemble between the spheres when assembling the manholes, thereby maintaining a firm coupling force between the spheres and improving assembly and constructability. .

Still another object of the present invention is to provide a rubber packing in the stepped portion where each sphere is connected by assembling each sphere to be laminated to improve watertightness of the joint to prevent leakage of waste water and the like.

Prefabricated manholes applied to the present invention as a specific means for achieving the above object, the upper cylinder is open cylindrical upper end is formed with a stepped on the outer periphery and at least one pipe hole through the side wall, the upper end of the lower sphere The outer periphery of the upper end of the upper periphery is provided with at least one or more vertical spheres, and is seated on the upper end of the vertical spheres and the upper surface is formed with a manhole hole in the circumferential direction around the manhole hole In the prefabricated manhole comprising a top slab formed with a stepped seat,

The lower periphery of the upper slab and the vertical sphere is formed with a plurality of grooves in the radial direction, the bottom surface of the groove is perforated through the hole from the groove to the bottom, and the manhole at the top of the wall of the lower sphere and the vertical sphere A bolting hole is formed to communicate with the through hole during assembly, and is connected between the spheres as a bolt fastened to the bolting hole through the through hole of the groove, and an upper surface of the step formed in the lower sphere, the vertical sphere and the upper slab. The semi-circular mounting groove is formed in the concave and characterized in that the packing is fitted thereto.

Here, the bolt is characterized in that the through-bolts formed with helix on both ends.

In addition, the packing is characterized in that the rubber packing made of natural or synthetic rubber material to improve the watertightness of the joint portion and to prevent cracking at the joint part by stacking each sphere to cushion the assembly.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 are exploded perspective views and cross-sectional views of the prefabricated manholes according to the present invention, respectively, the prefabricated manholes of the manhole between the lower sphere 100 and the upper slab 300 covered with the manhole cover 400. At least one or more vertical spheres 200 are interposed in the up and down directions for height adjustment according to the depth of embedding, and each sphere is composed of a connected structure.

The lower sphere 100 corresponding to the bottom portion of the manhole has a cylindrical shape with an open top, and an inner bottom surface thereof has a semi-circular invert 112 formed to prevent sedimentation of waste water and smooth flow of sewage. On the sidewalls of both ends of the invert 112, the pipe hole 110 for the pipe connection is formed through the inside, and the stepped portion 120 for the connection with the vertical sphere 200 is formed on the outer periphery of the upper end. In addition, a plurality of bolting holes 140 for fastening bolts are formed around the outside of the step 120 in a vertical direction.

The vertical sphere 200 seated on top of the lower sphere 100 is a cylindrical structure provided to adjust the height of the manhole according to the depth in which the manhole is embedded, seated on the stepped portion 120 of the upper end of the lower sphere 100. A lower recess of the shape corresponding to the step 120 is formed at the lower edge of the inner circumferential surface, and the step 222 is formed to protrude from the upper peripheral edge thereof. The height adjustment vertical sphere 200 is provided by stacking at least one or more to adjust the height of the manhole according to the depth of the manhole embedded.

The upper slab 300 that is assembled to the top of the top of the vertical sphere of the vertical sphere 300, the lower edge of the inner surface to be seated on the upper end 220 of the vertical sphere 200 corresponds to the step 220 of the vertical sphere. The lower groove of the shape is formed, the manhole hole 330 is formed on the top surface, and the mandrel 320 is formed to seat the manhole cover 400 in the circumferential direction around the manhole hole.

The present invention is to form a plurality of grooves in the radial direction in the lower outer periphery of the above-described vertical sphere 200 in order to improve the assemblability and workability of the prefabricated manhole made of the above configuration, grooves 230 In the bottom surface of the perforated through-hole 232 from the groove 230 to the lower end. In addition, the upper surface of the lower sphere 100 and the vertical sphere 200 to form a bolting hole 140 to communicate with the through hole 232 during the manhole assembly, the through hole 232 of the groove 230 Through the bolts (B) fastened to the bolting hole 140 to be connected between each sphere. At this time, it is preferable that the bolt (B) employ a through-bolt having a spiral formed at both ends thereof.

In addition, the present invention in order to prevent the gap between the joints 120,220 and the lower groove when connecting each sphere to increase the water-tightness and to mitigate the impact between the spheres during assembly, the lower sphere 100, the vertical sphere Semi-circular mounting grooves 122, 222, and 322 are formed in the upper surfaces of the stepped parts 120, 220, and 320 formed on the upper plate slab 300 and the packing 500 is inserted therein.

Next, the assembly and effect of the prefabricated manhole of the present invention having the above configuration will be described.

2 to 3, the vertical sphere 200 is placed on the lower sphere 100 so that the stepped groove 120 formed on the lower sphere 100 and the lower groove of the vertical sphere 200 can be coupled. Release. At this time, it is important that the lower hole 100 is connected to the bolting hole 140 provided at the side wall edge and the through hole 232 formed in the vertical sphere 200 so that the through bolt B can be assembled. . As such, the space portion of the recess 230 formed at the outer circumference of the lower end of the vertical sphere 200 in a state in which the bolting hole 140 of the lower sphere 100 and the through hole 232 of the vertical sphere 200 coincide with each other is used. By inserting the through-bolt (B) into the through hole 232 so that the two spheres can be connected. That is, in detail, the lower part of the through bolt B is fastened to the bolting hole 140 and the through bolt B protruding to the upper part of the through hole 232 is tightened with a nut to the lower sphere 100 and The vertical spheres 200 to be closely coupled to each other.

At this time, the groove 230 is to provide a space for the worker's hand to enter the bolting work when connecting the two spheres as a through bolt.

Since the above-described assembly process is equally applicable to the assembly between the upper vertical sphere 200 and the lower vertical sphere 200 and the assembly of the vertical sphere 200 and the upper slab 300 will not be repeated description thereof. do.

The prefabricated manhole of the present invention, which is assembled as described above, can be assembled by splicing another sphere with the assembled upper sphere after assembling two spheres when assembling and connecting between each sphere produced as a ready-made product. If the through-holes are not exactly matched in the state of stacking all, they are separated and re-laid again, so there is no need to match the through-holes, thereby improving assembly and constructability.

In addition, it is not connected between the spheres as a single long bolt as before, but the joints are jointed with each other as bolts between the spheres, so that each sphere can be more firmly coupled, the rubber material on the upper end of the joint The packing is provided to maintain the watertightness of the joint to prevent the leakage of waste water, and because the packing is made of rubber material, it can act as a buffer, due to the load of the sphere placed on top when laminated to assemble each sphere Cracks can be prevented from occurring at the joint.

According to the present invention prefabricated manhole as described above, because the spherical groove formed in each sphere when assembling the manhole can be assembled yet another sphere in the state of the line assembly between each sphere, the bonding force between each sphere is solid and assembled as compared to the conventional Stability and workability are further improved.

In addition, the rubber packing is provided at the joints between the spheres to improve the watertightness of the joints, thereby preventing the leakage of waste water and acting as a buffer during construction, thereby preventing the occurrence of cracks between the two spherical assemblies. There is.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be modified and modified in various ways without departing from the spirit or scope of the invention as set forth in the following claims. It will be appreciated that those skilled in the art can easily know.

Claims (3)

delete delete The upper opening is formed in a cylindrical shape with a stepped end formed at the upper periphery and at least one plumbing hole 110 penetrated at the side wall, and is seated and stacked on the stepped part 120 at the top of the lower sphere 100. The outer periphery of the upper end is at least one or more vertical spheres 200 is provided with a stepped 220, seated on the upper end of the vertical step (220) of the vertical sphere 200 and the manhole hole 330 is formed on the top surface of the manhole ball In the circumferential direction of the periphery, the upper slab 300 having the stepped jaw 320 is formed so that the manhole cover 400 is seated, and the stepped holes 120, 220, 320 formed in the lower sphere 100, the vertical sphere 200 and the upper slab 300. In the prefabricated manhole made of semicircular mounting grooves (122, 222, 322) is formed in the upper end surface of the) and the packing 500 is fitted therein, A plurality of grooves 230 are formed in the lower outer periphery of the vertical sphere 200 in the radial direction, and the through hole 232 is drilled in the bottom surface of the grooves 230 from the groove 230 to the bottom thereof. At the upper end of the wall of the lower sphere 100 and the vertical sphere 200, bolting holes 140 and 240 are formed to communicate with the through-holes when assembling the manholes, and through the through-holes 232 of the grooves 230, the bolting holes ( Prefabricated manholes, characterized in that the connection is made between each sphere as a bolt (B) is formed on both ends to be fastened to 140,240.

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