PL237462B1 - Adjustable casing-manhole cover set and the blocking - Google Patents

Abstract

A set comprising a cylindrical manhole body and a correspondingly dimensioned circular manhole cover is characterized in that along the lower periphery of the manhole cover (10) there are at least three identical stepped supports (13) of the cover (10), each it is in the form of a set of steps arranged ascending or descending in the same direction, together forming a rim surrounding the lower surface (11) of the cover (10), the extreme, lowest step of the stepped support (13) being adjacent to the highest step of the adjacent stepped support (13) ), and the stepped lower surface of each of the supports (13) of the cover (10), after assembling the set (1) in the selected position, rests against the complementary upper surface of the corresponding stepped supports (23) of the body (20), located in the flange (21 ) of the body (20) of the manhole and located along the perimeter of its inner wall (22), forming a socket of the body (20), the number of which corresponds to the number of supports (13) of the cover (10).

Description

The subject of the invention is a set of adjustable body - a cover of a manhole for inspection chambers. The kit according to the invention enables the vertical position of the cover to be adjusted in relation to the upper edge of the body and thus ensures that the upper surface of the manhole cover is adjusted to the level of the road surface.

STATE OF THE ART

There are often installations (e.g. telephone, electricity, sewage, gas lines, etc.) under the road surface and sidewalks that require maintenance and repair work. Access to this type of installation is provided by inspection chambers ended with an entrance, in the form of a ring-shaped metal body of the manhole set on a brick or concrete foundation. At its upper edge, this body is provided with a flange, inside which a manhole cover is placed. The upper surface of the manhole cover is flush with the upper edge of the flange of the manhole body and with the surface of the road or pavement, which ensures safe passage of vehicles or pedestrians crossing the inspection chamber.

However, during the operation of roads and pavements, the manhole cover often collapses, for example as a result of the subsidence process of the inspection manhole. In the case of roads with heavy traffic, within twelve months, the surface of the inspection chamber manhole may be reduced by even more than 12 mm, which constitutes a serious hazard in road traffic and necessitates the height correction of the manholes.

Traditionally, the height correction of sewer manholes consists in breaking up the road surface in the area of the inspection chamber, disassembling the manhole and re-positioning it on the foundation or grouting at the appropriate level, and building it with layers of a new surface. This type of correction is time consuming and costly. Moreover, it causes great difficulties in road traffic.

Solutions aimed at facilitating the height correction of manholes are known in the art. In the description of the utility model W. 123222, it was proposed to correct the height of the manholes by replacing the manhole cover with a cover whose rim, i.e. the foot resting against the body of the manhole, has an increased thickness as long as the upper surface of the gust should be raised so that it is on the level of the road surface surrounding it. This description indicates that it is possible to provide a set of several covers with different flange thicknesses so as to allow the manhole access level to be leveled with different inspection manholes.

US3773428 discloses vertically adjustable support for a manhole cover. The support comprises an annular body to which an adjusting ring is attached by means of a set of bolts or spacers, in which the manhole cover is fastened. Screws and spacers are used not only to attach the ring to the frame, but also to adjust its distance from the body. The vertical adjustment is thus limited by the length of the bolts or spacers, and when the cap ring is lifted up to align the top surface of the manhole with the road surface, a gap is created between the ring and the body.

Publication DE3016401 and US5044818 describe an adjustable manhole which comprises a body and a concentrically mounted flange therein for attaching a cover, the lower part of which rests on the internal step of the body. To correct the height of the hatch, compensation rings are used, mounted on the upper surface of the body's internal step and on the upper edge of the body, which move the flange for fixing the cover vertically upwards in relation to the body. In DE3016401, a compensation ring mounted on the inside body shoulder is additionally fixed to the body shoulder and to a flange for fixing the cover with screws.

Patent description US4976568 relates to a spacer ring placed on a manhole body, which is used to mount a manhole cover. The spacer ring consists of two rings mounted concentrically one below the other, the first ring for mounting on the body having a larger diameter than the second ring for mounting the cover below it and the lower surface of the first ring overlapping the upper surface of the second ring. As with publications US3773428 and DE3016401, the spacer ring is attached to the body by means of set screws.

In the prior art, there are no solutions that would enable multiple height adjustments of the manhole without the use of additional elements (such as spacer rings and screws). Thus, there is still a need for solutions enabling the cyclical height adjustment of the manhole cover in relation to the road surface.

PL 237 462 B1

SUMMARY OF THE INVENTION

The subject of the invention is a set consisting of a cylindrical body of a manhole and a correspondingly dimensioned circular-shaped manhole cover along the lower surface of the rim, on which there are at least three identical stepped supports (cover supports), each of which is in the form of a set of steps arranged in ascending or descending in the same direction and together forming a rim surrounding the bottom surface of the cover, the extreme, lowest step of the stepped support being adjacent to the uppermost step of the adjacent stepped support, and the stepped bottom surface of each of the support supports, when assembled in the selected position, rests on the complementary upper surface of the stepped body supports, provided in the flange of the body of the manhole and situated around the circumference of its inner wall, forming the body seat, the number of which corresponds to the number of the cover supports. Each of the supports is defined by a segment of the rim of the cover or the seat of the body of the same size. In a preferred embodiment, the supports are directly adjacent to each other to form a continuous rim surrounding the lower surface of the cover (i.e. the extreme, lowest step of the stepped support is at the highest step of the adjacent steped support).

Stepped supports located in the body of the manhole and on the cover enable changes to the level of the cover in relation to the body of the manhole, without any actions interfering with the construction of the road surface surrounding the manhole. In the initial position where the top surface of the cover is at the same level as the upper edge of the manhole body flange, all the steps of the lid support abut all steps of the manhole body support. By lifting the cover and turning it by the value of the step width or a multiple of the step width of the stepped support, the position of the support steps of the cover and the body are changed in relation to each other (they are out of phase with respect to each other), leaving some of the adjacent steps of the cover (e.g. 1,2, 3, 4, 5, 6, 7 or 8 degrees) without contact with their body support counterparts. This has the effect of lifting the cover vertically in relation to the manhole body. The accuracy of the height correction of the cover in relation to the manhole body depends on the adopted height of the support step.

Preferably, in the kit according to the invention, the number of supports for the cover and the body is three or a multiple of three, and most preferably the cover and the body are provided with three supports. Such a number ensures a stable position of the cover on the manhole body, i.e. the presence of three supports prevents it from tilting sideways.

In a preferred embodiment, the step surface of the stepped support of the cover and the body is inclined inversely from the edge of the step towards the riser, and preferably the step surface has an inclination of 5-10%. This arrangement of steps ensures the stabilization of the cover on the manhole body, as it prevents the steps from shifting relative to each other (e.g. due to rotation of the cover under the action of road traffic), which could lead to the assembly returning to its initial position (i.e. the one in which the top surface of the cover at the same level as the upper edge of the manhole body flange, and all the steps of the cover support abut all steps of the support of the manhole).

In order to ensure further stabilization of the cover on the manhole body, in a preferred embodiment the assembly according to the invention is provided with a lock for locking the cover to the manhole body.

The set according to the invention allows for a step height adjustment of the cover in relation to the body, and thus adjusting the cover level to the surface level. The process of adjusting the height of the cover in relation to the body is very simple and does not require any specialized equipment or skills. In addition, the lock for the kit according to the invention protects the cover against undesirable shifting or falling out. The lock is universal and fits various types of bodies and covers.

The kit according to the invention is illustrated in detail in exemplary embodiments with reference to the accompanying drawing figures, in which:

Fig. 1 is a perspective view of the kit according to the invention according to the first example, the body and cover of which are provided with 12 step supports of eight steps each;

Fig. 2 shows a perspective view of the cover itself shown in Fig. 1;

Fig. 3 shows a manhole body complementary to the cover shown in Fig. 2 in top view (a), and a section A-A through this body (b);

PL 237 462 B1

Fig. 4 schematically shows exemplary positioning options for the supports for the covers and the body (a) - (d) for the assembly according to the first embodiment;

Fig. 5 shows a manhole body according to a second embodiment, which includes 6 twelve steps step-bolts each, in top view (a) and a section A-A through the body (b);

Fig. 6 schematically shows exemplary positioning options for the supports for the covers and the body (a) - (f) for an assembly according to a second embodiment;

Fig. 7 is a partial longitudinal sectional view of the assembly according to the invention in an unfolded form (a), in an assembled form in the lowest position of the cover with respect to the manhole body (b) and in a collapsed form in a position in which the cover is raised relative to the manhole body (c), with the inner body wall is cylindrical without a cantilever at the socket shoulder;

Fig. 8 shows a partial longitudinal sectional view of the assembly according to the invention in the folded form at the lowest position of the cover relative to the manhole body (a) and in the folded form in a position where the cover is raised relative to the manhole body (b), with the inner cylindrical wall of the body beginning under the socket bracket;

Fig. 9 shows the cover of the second embodiment provided with three locking holes in a top view (a) and a section A-A (b).

According to the first embodiment shown in Fig. 1, the assembly 1 of the invention comprises a manhole cover 10 and a manhole body 20 based on a base 26, both the cover 10 and the body 20 being provided with twelve stepped supports 13, 23 each of which contains eight degrees 131.231. In this specific embodiment, each step 131,231 is 3mm in height.

The cover according to this embodiment is shown in more detail in Fig. 2. Along the lower rim 12 of the manhole cover 10 are 12 identical stepped supports 13 of the cover, which stepped supports 13 are in the form of a set of 8 steps 131 arranged descendingly (left to right). right), the stepped props 13 being directly adjacent to each other and arranged in a downward position to form a rim together surrounding the bottom surface 11 of the cover 10, and the lowest step 131 of the stepped support 13 is next to the top step 131 of the adjacent stepped support 13. The rim 12 of the cover 10 is formed by supports 13.

The stepped bottom surface 132 of each of the twelve cover supports 13 rests after assembly 1 in the selected position on the complementary top surface 232 of corresponding stepped supports 23 of the body 20. Fig. 3 shows a complementary body 20 including twelve stepped supports 23 in the flange 21 of the body. 20 manhole. Supports 23 are positioned around the circumference of the inner wall 22 of the body 20 to form a body seat in which, when mounted, complementary supports 13 of the cover 10 are placed.

The steps 131 of the support 13 of the cover 10 can be placed on the steps 231 of the supports 23 of the manhole body 20 in a different configuration, as illustrated in Fig. 4. In any case, when mounted, the stepped bottom surface 132 of the support 13 of the cover 10 abuts at least partially against a complementary upper surface 232 of the supports 23 of the body 20. Fig. 4a shows the "starting" position, i.e. one in which the cover 10 is in the lowest position with respect to the body 20 and all complementary steps 131, 231 of the supports 13, 23 of the cover 10 and the body 20 abut against each other. (the stepped bottom surface 132 of each of the supports 13 of the cover 10 abuts completely against the complementary stepped top surface 232 of the stepped supports 23 of the body 20). In Figs. 4b-4d the cover is raised from the starting position, i.e. the stepped lower surface 132 of the supports 13 of the cover 10 does not fully abut the complementary stepped upper surface 232 of the stepped supports 23 of the body 20). Fig. 4b shows a raised level, + 2 ", in which the cover 10 has been turned by the two widths of the steps 131, 231 relative to the body 20. In this state, the two steps 131 of the cover 10 and the two steps 231 of the body 20 remain free, creating a gap between the support. 13 of the cover 10, and the support 23 of the body 20. In this arrangement, the cover 10 is raised relative to the body 20 by 6 mm. Fig. 4c shows the elevated level "+4" where the cover 10 has been turned four step widths 131,231 relative to the body 20. In this state, the four steps 131 of the cover 10 and the four steps 231 of the body 20 remain free, creating a gap between the support 13 of the cover. 10, and the support 23 of the body 20. In this arrangement, the cover 10 is raised relative to the body 20 by 12 mm. Fig. 4d shows an elevated level "+6" in which the cover 10 has been turned six widths of the steps 131, 231 relative to the body 20. In this state, the six steps 131 of the cover 10 and the six steps 231 of the body 20 remain free, creating a gap between

The support 13 of the cover 10 and the support 23 of the body 20. In this arrangement, the cover is raised relative to the body 20 by 18 mm.

In a second embodiment, the assembly 1 according to the invention is analogous to that discussed above, except that the cover 10 and the body 20 are provided with six supports 13, 23, each of which includes a set of twelve steps 131, 231. Fig. 5 shows manhole body 20 of the second embodiment in top view (a) and a section AA through said body 20 (b).

The body 20 and lid 10 of the second embodiment can be folded in a manner analogous to that described in the first embodiment above. Fig. 6 shows various ways of fastening the cover 10 to the body 20. Fig. 6a shows the cover 10 and the body 20 in a disengaged position. Fig. 6b shows the assembly of the cover and body 20 in the starting position, i.e. one in which the cover 10 is in the lowest position with respect to the body 20 and all the complementary steps 131, 231 of the supports 13, 23 of the cover 10 and the body 20 are adjacent to each other (stepped lower a surface 132 of each of the supports 13 of the cover 10 rests fully against the complementary stepped upper surface 232 of the stepped supports 23 of the body 20). In Figs. 6c - 6f the cover is raised from the starting position, i.e. the stepped lower surface 132 of the supports 13 of the cover 10 does not fully abut the complementary stepped upper surface 232 of the stepped supports 23 of the body 20. Fig. 6c shows the elevated level "+2" in which the cover 10 has been turned two step widths 131, 231 relative to the body 20. In this state, the two steps 131 of the cover 10 and the two steps 231 of the body 20 remain free, creating a gap between the support 13 of the cover 10 and the support 23 of the body 20. In Fig. 6d shows the elevated level "+4" in which the cover 10 has been turned through the four widths of the steps 131, 231 relative to the body 20. In this state, the four steps 131 of the cover 10 and the four steps 231 of the body 20 remain free, creating a gap between the support 13 of the cover 10 and the support 23 of the body 20. Fig. 6e shows a raised level "+6" in which the cover 10 has been turned six widths of the step 131, 231 with respect to the In this state, the six steps 131 of the cover 10 and the six steps 231 of the body 20 remain free, creating a gap between the support 13 of the cover 10 and the support 23 of the body 20. Fig. 6f shows an elevated level "+8" in which the cover 10 has been turned eight step widths 131, 231 relative to the body 20. In this state, the eight steps 131 of the cover 10 and the eight steps 231 of the body 20 remain free, creating a gap between the support 13 of the cover 10 and the support 23 of the body 20.

Fig. 7 and Fig. 8 show a partial longitudinal section through an assembly 1 according to the invention, which comprises a body 20 of different construction. Fig. 7 shows a partial longitudinal section of an assembly 1 according to the invention, in which the inner surface of the body faces its edge. Fig. 7a shows the assembly in an unfolded form, Fig. 7b shows the assembly 1 in its folded form in the lowest position of the cover 10 with respect to the body 20 (starting position), Fig. 7c shows the assembly 1 in an assembled form in a position in which the cover 10 is raised with respect to Corps 20 (elevated level +5).

Fig. 8, on the other hand, shows an assembly 1, the body 20 of which is provided with a support 25 of the seat 24 of the body 20 (i.e. a ring that enables the attachment of the cover 1, extending along a cross section of the cylindrical wall of the body 20). Fig. 8a shows the assembly 1 in the collapsed form in the lowest position of the cover 10 with respect to the body 20 (starting position), Fig. 8b shows the assembly 1 in the collapsed form in a position in which the cover 10 is raised with respect to the body 20 (raised level +3).

Fig. 9a is a top view of the cover 10 with three locks 3, and Fig. 9b is an A-A section showing the screw 35 mounted in an opening 14 of the cover 10.

List of markings used in the description:

- Manhole body kit - cover

- manhole cover

- lower surface of the cover

- cover rim in the form of stepped supports

- stepped lid support

131 - step of stepped lid support

132 - stepped bottom surface of the cover support

- a recess in the cover with a hole through which the pin of the lock bolt passes

- cover securing ring

- a slot in the bottom surface of the cover

PL 237 462 B1

- manhole body

- manhole body collar

- inner wall of the body flange

- stepped body support

231 - body support stage

232 - stepped upper surface of the body support

- body seat in the form of stepped supports

- body seat bracket

- base of the body

- screw with incomplete thread

Claims (8)

An assembly comprising a cylindrical manhole body and a correspondingly dimensioned circular manhole cover, characterized in that along the lower surface of the rim (12) of the manhole cover (10) there are at least three identical stepped supports (13) of the cover (10) each of which is in the form of a set of steps (131) arranged ascending or descending in the same direction, forming together a rim surrounding the lower surface (11) of the cover (10), the lowest, lowest step (131) of the stepped support (13) being adjacent to the top step (131) of the adjacent stepped support (13), and the stepped bottom surface (132) of each support (13) of the cover (10), after assembling the assembly (1) in the selected position, rests against the complementary top surface ( 232) corresponding stepped supports (23) of the body (20) located in the flange (21) of the body (20) of the manhole and located around the circumference of its inner wall (22) forming a seat (24) of the body (20), the number of which corresponds to the number of supports (13) of the cover (10). 2. The kit according to claim A method as claimed in claim 1, characterized in that the stepped supports (13) are adjacent one another directly to form a continuous rim surrounding the lower surface (11) of the cover (10). 3. The kit according to p. 3. A method according to claim 1 or 2, characterized in that the number of supports (13) of the cover (10) and the number of corresponding supports (23) of the body (20) is three or a multiple of three. 4. The kit according to p. 3. Device according to claim 3, characterized in that the cover (10) and the body (20) are provided with 3, 6, 9 or 12 supports (13, 23). 5. The kit according to p. A device as claimed in claim 4, characterized in that the cover (10) and the body (20) are provided with three supports (13, 23). Kit according to any one of claims 1 to 6 The method of any of claims 1 to 5, characterized in that the surface of each of the steps (131, 231) slopes from the edge of the step (131, 231) to the riser. 7. The kit according to p. The process of claim 6, characterized in that the step surface slope is 5-10%. 8. Kit according to any one of claims A device as claimed in any one of claims 1 to 7, characterized in that it is provided with a lock for locking the cover in the manhole body.