KR101491450B1 - Manhole cover for adjusting height - Google Patents

Abstract

The present invention relates to a structure of a manhole, which can adjust the height of the manhole in a road repair work such as installation of the manhole or coating of the road. The manhole comprises: a support frame (10) disposed on a concrete manhole; a height adjustment ring (20) whose the height is adjusted and fixed on the outer surfaces of the support frame (10); and a cover panel member (30) inserted into and fixed to the inside of the height adjustment ring (20). The support frame (10) comprises: a lower flange (11); a base lower ring (12) vertically formed from the lower flange (11); and a plurality of holding reinforcement support (13) installed between the lower flange (11) and the base lower ring (12). The height adjustment ring (20) is formed to have a cylindrical shape having an inner diameter corresponding to an outer diameter of the base lower ring (12) and includes a plurality of slits (21) whose lengths from the lower side are different from one other. By fitting the holding reinforcement support (13) of the support frame (10) into the height adjustment ring (20), the height of the height adjustment ring (20) is adjusted and is fixed to the support frame (10).

Description

Manhole cover for adjusting height < RTI ID = 0.0 >

More particularly, the present invention relates to a structure of a manhole cover capable of adjusting a height of a manhole when repairing a road, such as installing a manhole or overlaying a road surface.

When the road is opened, manholes should be installed at regular intervals so that people and equipment can enter and exit for inspection and cleaning of the upper and sewer pipes, communications of the openings, and maintenance of the power lines. The manhole cover Should not hinder the passage of the vehicle by allowing the upper surface thereof to be fixed to the manhole horizontally without being inclined so as to coincide with the road surface of the road.

These manholes are generally formed by the steps of: i) fitting the base layer through cut or fill, ii) installing a concrete manhole, iii) connecting pipes such as sewage pipes between the manhole and the manhole, (Iv) placing aggregate on the soil compaction surface so that the upper end of the concrete manhole and the road surface of the road aggregate layer coincide with each other, and (v) installing a manhole cover on the concrete manhole and fixing it with anchor bolts , And (vi) installing an ascon.

However, when the concrete manhole is installed in the ground and the piping is connected and the compaction of the embankment and the soil is performed, uneven settlement occurs in the installed concrete manhole in most cases. Therefore, the upper end of the concrete manhole is not coincident with the top surface of the road- So that the manhole cover can not be adjusted to the correct elevation, and the mortar operation for adjusting the height must be separately performed or lead to a problem of failure.

On the other hand, if overhead work is performed to repair roads, it is necessary to modify the height of the manholes to match the repaired road surface, and development of a manhole structure capable of height adjustment is continuously being carried out The main object of the present invention is to provide an insertion means such as a height adjusting ring between the support frame and the lid or to provide a lid support frame which can move up and down inside the support frame.

As a representative example of this, an invention having a name of 'height-adjustable manhole cover' of Registered Patent Registration No. 10-0942727 registered on Feb. 9, 2010 has been proposed.

The manhole cover 100 includes a manhole cover frame 100, a height adjuster 200, and a lid cover 300. The manhole cover frame 100 includes a manhole cover frame 100, The inner liner 120 and the outer liner 220 are formed in a gear shape while being inclined with respect to the outer periphery of the inner liner 120 and the height adjuster 200. [

Therefore, the height of the manhole cover according to the registration number 10-0942727 is adjusted by adjusting the height of the manhole cover 200 according to the position where the inner liner 120 and the outer liner 220 are coupled in the manhole cover frame 100 .

However, since the inner liner 120 and the outer liner 220 are separately manufactured and attached to the manhole cover frame 100 and the height adjuster 200, the manhole cover of the above-mentioned registration number 10-0942727 is manufactured There is a problem that the manufacturing cost is excessively increased due to the complicated process.

In addition, the height adjuster is always located inside the manhole in contact with the moisture, and the position fixation of the height adjuster 200 depends on the frictional force between the interlineer 120 and the outer liner 220 Since the inclined portion of the inner liner 120 and the outer liner 220 is corroded after a certain period of time after installation, when the vertical load is applied due to the passage of the vehicle, the height adjuster 200 moves along the slope There is a problem in that it is practically difficult to continuously use the manhole cover frame by adjusting the height of the height adjuster in repairing the road.

In another prior art, the elevation adjustable manhole support frame shown in FIG. 2 has been proposed in the Registered Patent Publication No. 10-0649405 (registered on November 17, 2006).

The manhole support frame of the registration number 10-0649405 includes a manhole cover 70, a height adjusting ring 60 and a support 50 frame. Stepped protrusions 54 are formed on the wall surface of the support frame, Is formed on the outer circumferential surface of the stepped protrusion 54 so that the height of the manhole cover is changed according to the position where the stepped protrusion 54 and the stepped groove 64 are engaged with each other.

The height adjustment structure of the manhole support frame is not concerned with the phenomenon that the height adjuster slides on the slope due to the upper load and the height is lowered due to the manhole cover of Registration No. 10-0942727, It is not easy to attach a plurality of stepped protrusions 54 to the inner wall surface of the support frame 50 and to form the stepped grooves 64 on the outer circumferential surface of the height control ring 60 so that these steps Shaped protrusions 54 and the stepped grooves 64, the corrosion is likely to occur on the outer circumferential surface of the height adjusting ring 60, and this corrosion is caused by the stepped protrusions 54, while decreasing the size of the stepped grooves 64, it is practically difficult to adjust the height of the manhole cover during the side work of the road.

The manhole cover structure of the registration number 10-0942727 is designed such that when the load P1 is applied by the movement of the vehicle, the seating jaw 62 of the height adjusting ring is moved to the point of action Q of the load as shown in FIG. 2 (b) And the end of the lower end extended portion 63 becomes the fulcrum O and a bending moment M1 toward the inside is generated so that a clearance? Is generated between the support frame 50 and the height adjustment ring 60 The clearance becomes rattling when the vehicle passes, and the continuation of such rattling not only hinders the quiet running of the vehicle but also promotes the wear of the manhole cover structure, thereby significantly reducing the durability. Therefore, since the height adjusting ring must have sufficient rigidity not only for the vertical load but also for the bending moment described above, the thickness of the height adjusting ring is further increased to increase the amount of steel used.

On the other hand, a conventional lid panel member (corresponding to the manhole cover 70 in Fig. 2) is manufactured by a casting method and has a structure in which a lid upper plate is exposed to the outside as shown in Fig. 2, Is integrally formed. However, in recent years, various designs have been applied to the surface of the lid top plate to improve the appearance of the city. However, since the top surface of the lid top plate is easily damaged due to corrosion or passage of vehicles, Is increased.

KR 10-0942727 B1 KR 10-0649405 B1 KR 10-1252656 B1 KR 20-0448096 Y1

It is an object of the present invention to solve the problems of the prior arts described above, and it is an object of the present invention to simplify the structure so that it can be easily manufactured and constructed, and the support frame and the height adjustment ring are combined with each other to organically combine to increase structural stability, And an object of the present invention is to provide a manhole cover for a height-adjustable height, which can increase durability by preventing erosion and replacing each part by a minimum unit.

According to a preferred embodiment of the present invention to solve the above problems, there is provided a concrete manhole structure, comprising: a support frame placed on an upper surface of a concrete manhole structure; a height adjustment ring fixedly installed at an outer surface of the support frame; A cover panel member inserted and fixed to the inside of the height adjusting ring, and a peeling sleeve provided on the outer surface of the height adjusting ring.

Wherein the support frame comprises a lower flange, a support lower ring formed vertically from the lower flange, and a plurality of support reinforcing supports mounted between the lower flange and the lower ring; Wherein the height adjusting ring is formed from a lower portion and has a plurality of slits having different lengths; The height adjustment ring is fixed to the support frame while being adjusted in height by being fitted to the support reinforcement support of the support frame to the slit of the height adjustment ring. In addition, the upper end of the mounting brace support base may be formed as a horizontal plane.

According to another embodiment of the present invention, the base lower ring is provided with a plurality of setting holes corresponding to the number of slits formed in the height adjusting ring, and the height adjusting ring includes one reference hole, And the left and right gaps are located at the same positions as the difference in the length of the slits and the left and right gaps, There is provided a height-adjusting manhole cover which is positioned at a height communicating with a lower setting hole.

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According to another embodiment of the present invention, a protruding shear connection handle may be further provided on the outer surface of the height adjustment ring constituting the manhole cover, or a horizontal flange protruding in the horizontal direction may be provided at the upper end of the height adjustment ring There is provided a height-adjusting manhole cover attached thereto.

In this case, when the horizontal flange is attached to the upper end of the height adjusting ring, the lower surface of the horizontal flange may be tapered upward toward the outside, and at the same time, at least one And the lid panel member is inserted and fixed to the inside of the height adjusting ring by being mounted on the upper surface of the cradle.

According to another embodiment of the present invention, a height adjustment ring is formed on the inner surface of the height adjustment ring, and the height adjustment ring is inserted and fixed to the inside of the height adjustment ring by mounting the lid panel member on the upper surface of the mount. A lid is provided.

Further, the step and jaw tongues constituting the cradle may further include a rubber ring groove, and the jaws formed on both sides of the rubber ring groove may be formed to have different heights.

According to another embodiment of the present invention, the lid panel member is provided with a height adjusting manhole cover comprising a lid top plate and a top plate frame supporting the lid top plate, the height of which is a prefabricated structure capable of being separated and assembled from each other.

INDUSTRIAL APPLICABILITY The present invention simplifies the components constituting the manhole cover and facilitates assembly and disassembly, thereby reducing the cost of manufacturing, construction and parts replacement and simplifying the operation.

Further, according to the present invention, the mounting reinforcing support, the bottom ring and the height adjusting ring are structurally combined so as to have an organic relation, thereby improving the structural stability and durability and reducing the amount of steel used.

Further, according to the present invention, the manhole cover is integrated with the road surface so that the manhole cover can be prevented from falling into the hole, thereby ensuring safe operation of the vehicle.

Also, the height of the manhole cover can be easily adjusted without removing the ascon, even if the height of the manhole cover is to be adjusted again due to maintenance of road pavement or the like.

Further, the present invention makes it possible to maintain the water-tightness without causing the rubber ring to be easily broken even in the continuous action of the vehicle load.

1 is an exploded perspective view of a height-adjusting manhole cover according to the prior art.
FIG. 2 is a cross-sectional view explaining the concept that the manhole support frame is deformed by an upper load (refer to FIG. 2 (a) is an exploded perspective view of the manhole support frame .
3 is a perspective view illustrating an assembled height-adjusting manhole cover according to an embodiment of the present invention.
4 is a perspective view and a cross-sectional view showing a state where the height of the manhole cover is the lowest in the present invention.
5 is a perspective view and a cross-sectional view showing a state in which the height of a manhole cover is highest in the present invention.
FIG. 6 is a cross-sectional view illustrating a structural effect generated by installing the height adjustment ring on the outside of the base lower ring in the present invention.
FIG. 7 is an exploded perspective view and an assembled perspective view for explaining a relationship in which a lower ring and a height adjusting ring are fixedly coupled in the present invention. FIG.
FIG. 8 is an exploded perspective view and a cross-sectional view of a manhole cover in a case where a peeling sleeve is further provided on the outer surface of the height adjusting ring in the present invention.
FIG. 9 is a perspective view illustrating a height adjusting ring in a case where a height adjusting ring is further provided on the outer surface of the height adjusting ring according to the present invention.
10 is a photograph showing a phenomenon in which the manhole cover and its surroundings are settled by the concentrated load.
11 is a perspective view and a cross-sectional view illustrating a case where the height adjusting ring is further provided with a horizontal flange for load distribution in the present invention.
Fig. 12 is a cross-sectional view for explaining an operational relationship in which the horizontal flange of Fig. 11 performs a load balancing function.
13 and 14 are a perspective view and a sectional view showing various shapes of a cradle provided in the height adjusting ring in the present invention.
15 is a perspective view and a cross-sectional view of a case where the height adjusting ring is further provided with a rubber ring groove in the present invention.
16 is a cross-sectional view showing a state in which a panel lid member is placed in a state where a rubber ring is inserted into a rubber ring groove of a height adjustment ring in which a horizontal flange is formed in the present invention.
17 and 18 are perspective views showing embodiments of the lid panel member applied to the present invention.
19 is a perspective view of each process for explaining a process of installing and installing a manhole cover according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, however, it is to be understood that the present invention is not limited to the disclosed embodiments.

3 is a perspective view illustrating an assembled height-adjusting manhole cover according to an embodiment of the present invention.

3, the present invention includes a support frame 10, a height adjustment ring 20 fixedly installed on the outer surface of the support frame 10, And a lid panel member 30 which is inserted and fixed inward.

The support frame 10 is placed on the upper surface of the concrete manhole structure C and forms a skeleton of the manhole cover with a boundary with the asphalt A of the road surface so that the load of the vehicle or the like transmitted through the lid panel member 30 The present invention relates to a concrete manhole structure having a lower flange 11 vertically formed to be in direct contact with a top surface of a concrete manhole structure C and a vertical flange 11 formed vertically from the lower flange 11, And a plurality of mounting reinforcing supports 13 provided between the lower flange 11 and the lower receiving ring 12. [

The lower flange 11 of the support frame 10 is provided with a plurality of anchor holes 14 and integrated with the concrete manhole structure C through the anchor bolts.

The lower support ring 12 of the support frame 10 guides the upper and lower loads transmitted directly or indirectly by the height adjustment ring 20 while guiding the up and down movement of the height adjustment ring 20 together with the mounting reinforcing support 13 To the concrete manhole structure (C) through the lower flange (11).

In addition, the lower bearing ring 12 forms a thick wall integrally acting with the height adjusting ring 20 through the mounting reinforcing support 13 to resist a horizontal load applied through the ascon A . Therefore, it is possible to reduce the thickness of the lower bearing ring 12, thereby reducing the amount of steel used.

On the other hand, the mounting bracket 13 provided on the supporting frame 10 is similar in shape to the reinforcing rib of a usual supporting frame in that it reinforces the bottom ring 12, but the mounting reinforcing bracket 13 Is configured to guide and mount the height adjustment ring 20 to adjust the overall height of the manhole cover as well as to reinforce the conventional support frame in that it directly supports the upper load delivered by the height adjustment ring 20 Rib is a completely different configuration can be said.

The mounting reinforcing support 13 may have a right triangle shape, but preferably the top has a horizontal surface 13a so as to have a trapezoidal shape or a rectangular shape.

A horizontal component force is generated between the height adjusting ring 20 and the mounting reinforcing support 13 so that horizontal stress is applied to the upper end of the slit 21 described later of the height adjusting ring 20 Since the upper end of the slit 21 of the height adjustment ring 20 is mounted on the horizontal surface 13a of the mounting bracket 13 in the case where the upper surface is formed as the horizontal surface 13a, There is no room for horizontal stress to occur.

The height adjustment ring 20 is formed in a cylindrical shape having an inner diameter corresponding to the outer diameter of the bottom ring 12 of the support frame 10 and is provided with a plurality of slits 21 having different lengths from the bottom.

The number of slits 21 in the form of stepwise slits 21, which are gradually increased or decreased in length, constitutes one unit, and the number of units equal to the number of the stationary support posts 13 of the support frame 10 Should be provided on the height adjustment ring (20).

The overall height of the manhole cover depends on the length of the slit 21 into which the mounting bracket 13 is inserted. Figs. 4 and 5 show examples in which the manhole cover is different in height from each other.

4 is a perspective view and a cross-sectional view showing a state in which the height of the manhole cover is minimized. The mounting reinforcing support 13 of the supporting frame 10 has the longest length among the slits 21 of the height adjusting ring 20 Is inserted into the slit (21). At this time, it is preferable that the lower end of the height adjusting ring 20 is in contact with the upper surface of the lower flange 11 of the support frame 10.

The structure of the height adjusting ring 20 contacting the upper surface of the lower flange 11 of the support frame 10 described above has a more stable structure since the upper load is not transferred to the mounting and supporting posts 13 but is shared with each other .

5 is a perspective view and a cross-sectional view showing a state in which the height of the manhole cover is the highest. The mounting reinforcing support 13 of the supporting frame 10 has the shortest length among the slits 21 of the height adjusting ring 20 Is inserted into the slit (21).

The height adjustment ring 20 which directly supports the upper load is located outside the bottom ring 12 of the support frame 10 and the slit of the height adjustment ring 20 21 are also located outside the bottom ring 12 of the base.

Therefore, unlike the prior arts described above, the height adjusting ring 20 of the present invention and the mounting reinforcing support 13 coupled thereto do not come into direct contact with the moisture inside the manhole, so they are not easily corroded, Since the width of the slit 21 and the thickness of the mounting reinforcing support 13 are not changed, even when the height of the manhole cover needs to be changed due to road surface overlay work, etc., Is significantly increased.

In addition, even if the upper load P1 of the vehicle is applied to the height adjusting ring 20, the bending moment M1 in the clockwise direction coincides with the point of action Q and the supporting point O as shown in Fig. 6 (a) Since the fulcrum O is the upper end of the bottom ring 12 even if the height of the manhole cover is increased as shown in Fig. 6B, the distance between the fulcrum Q and the fulcrum O The horizontal load P2 generated by the ascender A generates a bending moment M2 in the counterclockwise direction due to the small amount of generated bending moment M1 in the clockwise direction due to the upper load P1, The bending moment M1 in the clockwise direction is canceled, so that the deformation of the height adjusting ring 20 or the clearance? As in FIG. 2 (b) of the related art does not occur at all.

Since the slit 21 of the height adjusting ring 20 is fixed so that both side surfaces of the supporting stiffening support 13 are not moved to the left and right so that the stiffening support supporter 13) are not easily out-of-plane buckled. Therefore, the thickness of the mounting reinforcing support 13 can be minimized.

The bottom ring 12 and the height adjusting ring 20 of the present invention may further include fixing holes for fixing the bottom ring 12 and the height adjusting ring 20 by fixing bolts 26 and fixing them to each other. The fixing hole includes a setting hole 15 provided in the lower bearing ring 12 and a reference hole 25 provided in the height adjusting ring 20.

7 illustrates the relationship in which the lower ring 12 and the height adjusting ring 20 are fixedly coupled to each other. Fig. 7 (a) is a view showing the relationship between the lower ring 12 and the height adjusting ring 20 (B) is a view showing an example of the positions of the reference holes 25 and 15 and the reference holes 25, and FIG. 5 (b) Respectively.

The setting holes 15 provided in the base lower ring 12 are formed by the number of slits 21 of the height adjusting ring 20 and the positions of the setting holes 15 are formed to correspond to the slits 21 . On the other hand, only one reference hole 25 provided in the height adjusting ring 20 is formed, and the reference hole 25 is formed in the longest slit 21 of the height adjusting ring 20 as shown in FIG. 7 (b) Should be formed at a position that communicates with the setting hole 15 at the lowest position when the mounting reinforcing supporter 13 of the supporting frame 10 is fitted. Here, the vertical spacing and the horizontal spacing between the setting holes 15, in which the position of the setting hole 15 corresponds to the slit 21, are equal to the difference in length between the slits 21 and the lateral spacing.

The reference hole 25 and the setting hole 15 configured as described above further advance the operation of carrying the component by the shear connection handle 22 or the horizontal flange 28 described later. 7 (b), after the mounting reinforcing supporter 13 of the supporting frame 10 is inserted into the longest slit 21 of the height adjusting ring 20, When the hole 15 is fastened with the fixing bolt 26, the support frame 10 and the height adjusting ring 20 are integrally joined together with the smallest size, so that all parts of the manhole cover can be moved at a time.

The reference hole 25 and the setting hole 15 are formed by integrating the support frame 10 and the height adjustment ring 20 after the completion of the installation of the manhole cover member to disperse the transmission stress of the upper load, The height adjustment ring 20 is prevented from being detached from the support frame 10 together with the lid panel member 30 when a negative pressure is generated in the manhole.

At the same time, a peeling sleeve 27 is further attached to the outer surface of the height adjusting ring 20. 8 is a perspective view and a construction sectional view of a manhole cover to which the peeling sleeve 27 is attached.

When the height of the height adjustment ring 20 is set to face directly to the aspheric A of the package chain in the case where the height of the manhole cover already installed by repairing the road pavement is to be adjusted, The abrasive sleeve 27 causes sliding between the outer surface of the height adjusting ring 20 and the Ascon A so that the asphalt A ) Eliminating operation, thereby improving the workability.

The peeling sleeve 27 has the same shape as the outer surface of the height adjusting ring 20 such as the slit 21 so as to surround the height adjusting ring 20 and has a protruding portion The configuration of the peeling sleeve 27 is excluded.

Further, the peeling sleeve 27 is not limited to the thickness and the material of the peeling sleeve 27, as long as the peeling sleeve 27 can facilitate the sliding action without easily causing corrosion.

In another embodiment of the height adjustment ring 20 of the present invention, on the other hand, in order to facilitate the transportation of the manhole cover parts to the height adjustment ring 20, A shear connection handle 22 is further provided on the outer surface of the height adjustment ring 20 as shown in Fig.

When the installation of the manhole cover is completed, the front end connection handle 22 is embedded in the inside of the ascon A so that the manhole cover can be integrated with the road surface. It functions as a shear connection member, thereby preventing the occurrence of the phenomenon that the manhole cover only sinks into the hole and is shut off from the road surface. Therefore, the shear connection handle 22 has a shape protruding from the outer surface of the height adjustment ring 20. [

When there is a failure such as failure to perform precise compaction work by the vibration roller around the manhole cover at the time of the asbestos packing of the road opening construction, when the continuous concentrated load of the vehicle or the like acts, the concrete manhole structure C or its surroundings may sink together. In an embodiment of the present invention, means for solving such a problem are added.

11 shows a shape in which a horizontal flange 28 protruding in the horizontal direction is attached to the upper end of the height adjusting ring 20 as a means for preventing sinking of a manhole cover or the like.

The horizontal flange 28 of the present invention is widely distributed such that the entire load of a vehicle or the like applied to the manhole cover is not concentrated only on the concrete manhole structure C or a local portion around the concrete manhole structure C to improve the stability and durability of the manhole structure itself . Therefore, it is preferable to form the taper so that the lower surface of the horizontal flange 28 is inclined upward toward the outside so that the load distribution function of the horizontal flange can be efficiently performed.

12 is a diagram for explaining the operational relationship in which the horizontal flange 28 formed at the upper end of the height adjusting ring 20 disperses the upper load, wherein (a) shows a shape in which the load is dispersed by the horizontal flange 28 (B) shows a phenomenon in which the load is concentrated due to the absence of the load distributing means such as the horizontal flange 28.

Since the horizontal flange 28 according to the embodiment of the present invention functions as the shear connection handle 22 according to another embodiment of the present invention during the transportation of the components, the configuration of the shear connection handle 22 So that the effect can be omitted.

The lid panel member 30 to be described later is inserted into the height adjusting ring 20 so that the upper surface thereof is aligned with the road surface. Therefore, a mounting table 23 for fixing the lid panel member 30 is further formed inside the height adjusting ring 20.

13 and 14 show various shapes of the holder 23. 13 (a) and 13 (b), the holder 23 has a shape protruding from the inner surface of the height adjusting ring 20, such as the engaging tine ring 23a or the engaging jaw protrusion 23b When the horizontal flange 28 is formed, at least one step 23c may be formed at a portion where the horizontal flange 28 is in contact with the upper end of the height adjusting ring 20 as shown in FIG. 14 And a fastening portion formed with a bolt hole may be provided to fix the lid panel member 30 to the height adjusting ring 20 by bolts.

On the other hand, in the case of the manhole cover of the sewage, a water-tight function is required to prevent mixing of rain water and sewage. Normally, a rubber ring is inserted into the lower edge of the lid. However, the rubber ring in such a structure is not able to function as a water-tight function due to damage such as plastic deformation of the rubber ring itself due to the continuous load of the vehicle.

In order to prevent such a problem, according to another embodiment of the present invention, a rubber ring groove 29a is formed at a portion of the locking tine 23a or step 23c of the cradle as shown in Figs. 15 (a) and 15 (b) And the jaws 29c formed on both sides of the rubber ring groove 29a are formed to have different heights.

The rubber ring 29b inserted into the rubber ring groove 29a is pressed only by the height difference DELTA of the both jaws 29c even if the lid panel member 30 is placed, The durability of the ring 29b is improved and the watertightness of the manhole cover structure can be maintained for a long time.

16 shows a state in which a rubber ring groove 29a is formed in a portion of a step 23c of a height adjusting ring 20 in which a horizontal flange 28 is formed and a rubber ring 29b is inserted into the rubber ring groove 29a, An example in which the member 30 is provided is shown in cross section.

Figs. 17 and 18 show respective embodiments of the lid panel member 30 inserted and fixed in the height-adjusting ring 20. Fig.

The lid panel member 30 includes a lid upper plate 30a exposed to the outside and a top plate frame 30b supporting the lid upper plate 30a. For example, by casting or welding, or may be constructed as a prefabricated structure that can be separated and assembled as shown in FIG.

As shown in Fig. 18, the upper panel frame 30b of the lid panel member 30 having the prefabricated structure is constituted by the inner pipe 31 and the lid ring 32 surrounding them.

The assembling structure of the lid upper plate 30a and the upper plate frame 30b can improve durability by only making the lid upper plate 30a resistant to corrosion and can replace only the lid upper plate 30a, So that the design can be changed in various ways.

The lid upper plate 30a and the upper plate frame 30b are assembled by a fastening bolt 43a so that a groove 41 is formed in the lid upper plate 30a and then the first fastening holes 42a And each of the tubes 31 of the upper frame 30b is provided with a second fastening hole 42b corresponding to the first fastening hole 42a.

The lid panel member 30 integrally assembled by the fastening bolt 43a should be structured such that it can not easily separate the lid plate 30a from outside without any difficulty.

18 (b), a groove 41 provided in the lid upper plate 30a is formed in a V-shape, and the fastening bolt 43a is used as a plate head bolt, 2 fasteners. However, the method of assembling the lid upper plate 30a and the upper plate frame 30b in the present invention is not limited to the fastening structure of the dish head bolts.

For example, although not shown, the groove 41 of the lid upper plate 30a is formed so as to correspond to a hexagonal nut so that the hexagonal nut inserted therein can not be rotated, and the fastening bolt 43a is engaged with the lower portion of the upper frame 30b So that the lid upper plate 30a can not be easily separated from the outside by allowing the fastening bolt 43a to be fastened upward.

FIG. 19 is a perspective view illustrating a manhole cover for a height-adjustable height-adjusting method according to the present invention.

First, when the installation work of the concrete manhole structure C and the embankment and compaction of the surroundings are completed, the support frame 10 is fixed to the upper surface of the manhole structure using the anchor bolts (Fig. 19A) .

When the installation of the support frame 10 is completed, it is checked whether the concrete manhole structure C is located at the designed height, and the slit 21 of the height adjustment ring 20 is selected depending on the error with respect to the height , And the height adjusting ring 20 is fitted to the outer peripheral edge of the lower bearing ring 12 so that the mounting reinforcing support 13 is inserted into the slit 21 (Fig. 19 (b)). At this time, it is preferable to previously provide a peeling sleeve 27 on the outer surface of the height adjusting ring 20 so as to facilitate the upward and downward work on the height adjusting ring 20 at the outer circumference of the height adjusting ring 20 Do.

Next, the lid panel member 30 is inserted into the height adjusting ring 20 to be fixed to the mounting table 23 provided on the height adjusting ring 20 (Fig. 19 (c)), A) to complete the construction (Fig. 19 (d)).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it will be possible to carry out various modifications thereof. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

10: Support frame 11: Lower flange
12: base lower ring 13: mounting brace
14: Anchor hole 15: Setting ball
20: height adjustment ring 21: slit
22: shear connection handle 23: mounting member
23a: Jawing jaw ring 23b: Jaw protrusion
23c: step 25: reference ball
27: peeling sleeve 28: horizontal flange
29a: Rubber ring groove 29b: Rubber ring
29c: chin 30: lid panel member
30a: lid top plate 30b: top plate frame
31: Each tube 32: Cover ring
41: groove 42a: first fastening hole
42b: second fastening hole 43a: fastening bolt
43b: nut

Claims (12)

A height adjustment ring 20 fixedly installed on the outer surface of the support frame 10 so as to be fixed to the height of the height adjustment ring 20, A lid panel member 30 inserted and fixed to the inside of the height adjusting ring, and a peeling sleeve 27 provided on the outer surface of the height adjusting ring,
The support frame 10 includes a lower flange 11, a lower support ring 12 formed vertically from the lower flange 11, and a plurality of lower flanges 11 provided between the lower flange 11 and the lower support ring 12. [ (13);
The height adjustment ring 20 is a cylindrical shape having an inner diameter corresponding to the outer diameter of the lower support ring 12, and is provided with a plurality of slits 21 having different lengths from the lower side;
The height adjustment ring 20 is fixed to the support frame 10 by adjusting the height of the height adjustment ring 20 by fitting the mounting reinforcing support 13 of the support frame 10 to the slit 21 of the height adjustment ring 20 Features a height-adjustable manhole cover. 2. The height-adjusting manhole cover according to claim 1, wherein the upper end of the mounting reinforcing support (13) forms a horizontal surface (13a). The apparatus according to claim 1, wherein the lower bearing ring (12) is provided with a plurality of setting holes (15) as many as the number of slits (21) formed in the height adjusting ring (20) Wherein the plurality of setting holes 15 are vertically and horizontally spaced apart from each other at the same position as the difference in the lengths of the slits 21 and between the left and right slits 21, Is set at a height that communicates with the lowest setting hole (15) provided in the base lower ring (12) in a state where the mounting bracket (13) is inserted into the longest slit (21) And the height of the manhole cover is set to be larger than the height of the manhole cover. delete The height adjusting manhole cover according to claim 1, further comprising a protruding shear connection handle (22) on the outer surface of the height adjustment ring (20). The height adjusting manhole cover according to claim 1, wherein a horizontal flange (28) protruding in the horizontal direction is further attached to an upper end of the height adjustment ring (20). The height adjusting manhole cover according to claim 6, wherein the lower surface of the horizontal flange (28) is tapered to be inclined upward toward the outside. The lid panel member (30) according to claim 6, wherein a cradle (23) comprising at least one step (23c) is formed in a portion of the horizontal flange (28) And is inserted and fixed inside the height adjusting ring (20) by being mounted on the upper surface of the holder (23). 9. The apparatus according to claim 8, wherein a rubber ring groove (29a) is further provided at the step (23c) constituting the cradle (23), and the jaws (29c) formed on both sides of the rubber ring groove (29a) Wherein the height adjusting manhole cover is formed to have a height adjustment function. The height adjustment ring (20) according to claim 1, wherein a protruding cradle (23) is formed on the inner surface of the height adjustment ring (20), and the lid panel member (30) is mounted on the top surface of the cradle 20. The height adjusting manhole cover as claimed in claim 1, 11. The apparatus according to claim 10, wherein the protruding cradle (23) comprises a locking tie ring (23a), the locking tine ring (23a) further comprises a rubber ring groove (29a) And the jaws (29c) formed on the manhole cover are formed to have different heights. The lid panel member according to claim 1, wherein the lid panel member comprises a lid upper plate and a top plate frame for supporting the lid upper plate, And a height adjustment manhole cover.

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