RU180105U1 - HATCH COVER - Google Patents

Abstract

Manhole cover is intended for its use in the field of construction of fiber optic communication lines. It solves the problem of protecting these lines from breaking. The technical result of the utility model is to simplify the design of the hatch and its installation. The technical result is obtained by a manhole cover containing a plate with a weighting agent located on the bottom side of the plate facing the interior of the well, means for installing the cover in the manhole body and removing it from the body, characterized in that the weighting material is detachably connected to the plate and made removable. The removable weighting compound is made of concrete. The removable weighting agent is made of at least two parts and in one embodiment of the lid it is attached to the plate in its central part. In another design of the lid, a removable weighting agent is attached to the peripheral part of the plate at several points concentrically located around the center of the plate. In this case, the removable weighting agent is connected to the means for installing the cover in the hatch body, which is removable. In a third embodiment, the detachable weighting agent comprises a weighting section rigidly connected to it under the plate and at least one removable weighting section.

Description

This technical solution relates to the field of construction, in particular, to underground structures, such as manholes, manholes, manholes, manhole covers and devices that cover manholes and serve primarily for the installation of communications, their repair and inspection. In particular, the technical solution relates to lid designs associated with devices for fixing and locking them in wells in order to prevent unauthorized access to them and the equipment installed in them.

The manhole cover is intended for use mainly in communications of fiber-optic communication lines having an increased risk of penetration to communication lines. The cover can be used in other industries in order to protect objects located in the wells of structures for various purposes, as well as in the devices of general-purpose communications wells in order to protect communications from penetration.

Known well covers with devices for their fastening in wells, while the devices are lever-screw, formed by pivotally connected levers and a screw with a nut screwed on it, allowing the locking levers to move and interact with the walls of the well (RU 70524 U1, 27.01 .2008, RU 2265698 C1, 10/10/2005. RU 49034 U1, 10/10/2005. UA 9466 U, 09/15/2005. US 6,488,440 B1, 12/03/2002. SU 1392209 A1, 04/30/1988. RU 42549 U1, 12/10/2004. WO 99/37530, 07.29.1999. RU 70524 U1, 01.27.2008).

Known lever locking devices driven by a screw and nut, while the nut is connected with locking levers arranged in such a way that they interact in the working position with load-bearing elements of the wells, in particular with their walls (RU 2188291 C2, 08.27.2002. US 5650065 B1, 07/22/1997. GB 2275966 A, 09/14/1994. EP 0362862 A2, 04/11/1990), while a close technical solution to the utility model presented in this description is the device according to the patent US 5650065 B1, 07/22/1997.

Cable sewer hatches are also known, equipped with bottom covers with gate valves (Yandex. Https://www.ssd.ru/kiyshka-lyuka-gk-u223-00-000). When not using the well, the hatch is closed with a cover of concrete (Yandex. Http://www.elec.ru/market/kryshka-ljuka-kolodtsa kll 14944513865.html).

To prevent damage to cable lines, the lower manhole covers are equipped with locking devices that open and close with secret keys (Yandex. Https://www.ssd.ru/ustroystvo-uznk-ii-8p).

These known locking devices have a relatively complex structure and a low degree of secrecy; they do not exclude the possibility of forging a secret key and opening a manhole cover to it.

A well cover is known, characterized in that it contains a plate with a central turnkey hole, as well as a threaded sleeve located under the plate, designed to connect with the cover lifting element from the manhole socket (RU 2404328 C1, 11/20/2010). This manhole cover contains a metal plate and at least one means for removing the cover from the manhole body and installing the cover into the manhole body. Its significant drawback is the comparative complexity of the locking device, as well as the low level of protection of the manhole cover from unauthorized access to the wells.

Known manhole cover containing a metal plate and at least one means associated with the lid for installing the cover in the hatch body and removing it from the body, and to the bottom side of the plate facing the inner space of the well attached weighting material, which is made of concrete and attached to the underside of the plate using fittings rigidly connected to the plate of the lid. Means for installing the cover in the hatch body and removing it from the body is connected to the weighting material and is removable. The means for installing the cover in the hatch body and removing it from the body is connected to the stove and is removable (RU 173437 U1, 08.28.2017 - prototype).

The disadvantages of the prototype are the relatively high complexity of manufacturing the hatch, the impossibility of changing the weight of the weighting agent and low maintainability in case of damage to the weighting agent. All these disadvantages are associated with the complexity of the design, in which the weighting agent is reinforced with steel reinforcement connected to the lid plate by welding.

The technical result of the utility model presented in this description is to simplify the design of the hatch, reduce the complexity of its manufacture and ease of installation.

The technical result is obtained by a manhole cover containing a plate with a weighting agent located on the underside of the plate facing the interior of the well, means for installing the cover in the manhole body and removing it from the body, characterized in that the weighting material is detachably connected to the plate and made removable.

The removable weighting compound is made of concrete. The removable weighting agent is made of at least two parts. A removable weighting plate is attached to the plate in its central part. A removable weighting agent is attached to the peripheral part of the plate at several points concentrically located around the center of the plate. The removable weighting agent is connected to the means for installing the cover in the hatch, while the installation means is removable. The removable weighting agent includes a weighting section located under the plate and rigidly connected to it, to which at least one removable weighting section is detachably connected.

In FIG. 1 shows an example of a hatch cover in its first embodiment (a cover assembly in a front view).

In FIG. 2 shows a manhole cover with a weighting agent and means for its installation and removal from the manhole in section.

In FIG. 3 - manhole cover (removable weighting material removed).

In FIG. 4 - weighting agent.

In FIG. 5 shows a second example of the execution of the hatch assembly in front view (conventionally, the plate and the removable weighting agent are shown transparent).

In FIG. 6 - removable weighting agent made of three sections.

In FIG. 7 - elements of the second design of the manhole cover for connecting a removable weighting agent with a cover plate.

In FIG. 8 - a manhole cover installed in the hatch with a thickened plate in longitudinal section.

In the presented particular example of the implementation of the utility model (Fig. 1), the manhole cover contains a round metal plate 1 (Fig. 3), to which a weighting compound 2 is connected (Fig. 2). In the plate and the weighting material, combined central through holes 3 are made (Figs. 3, 4). The weighting agent is an array made of reinforced cured concrete or other heavy material, such as cast iron.

To the center of the plate 1 (Fig. 3) by welding or otherwise attached a hollow guide - a pipe 4, having an external thread 5 at the lower end. On the inner surface of the lower end of the pipe 4, an internal thread 6 (Fig. 2) is made, into which the thread 7 of the rod 8 (Fig. 3) is screwed, having a bracket 9 at the upper end for capturing the cover by a hook of the lifting mechanism. The rod 8 with the bracket 9 are removable. The internal thread 6 of the pipe 4 and the thread 7 of the rod 8 are made secret.

In the mounting position of the manhole cover, the rod 8 is located in the pipe 4 and its thread 7 is screwed into the internal thread 6 of the pipe 4 (Fig. 2). In the operating position of the manhole cover (when the rod 8 with the bracket 9 is removed from the cover), the weighting agent 2 is clamped between the flange 10 and the plate 1 with the nut 11 screwed onto the external thread 5 of the pipe 4. In this case, in the assembled position of the manhole cover, the pipe 4 is located in the hole 3 of the weighting material . The flange 10 is made durable, excluding its bending, as well as crushing or other damage to the lower surface of the weighting agent from the action of its mass.

On the edge of the lid, it is possible to make a recess for oriented pairing of the lid with the hatch body ring. In any place of the plate 1 and weighting agent 2, it is also possible to have combined holes for introducing through them into the well of the probe of the gas analyzer, indicating the level of accumulation of gas in the well.

The hatch cover is assembled so that the pipe 4 is first introduced into the hole 3 of the weighting material 2 and the weighting material is clamped between the flange 10 and the plate 1 by screwing the nut 11 onto the external thread 5 of the pipe 4. After the cover is assembled, it is installed in the socket of the well ring. To do this, first insert rod 8 into the pipe 4 and screw its thread 7 into the internal thread 6 of the pipe 4, and then hook the hook of the lifting mechanism to the bracket 9. Lift the manhole cover with the lifting mechanism, and then lower it and install it into the socket of the well ring. After that, remove the rod 8 with the bracket 9 in the reverse order by unscrewing the rod, and the hole 3 in the plate 1 is closed with a secret cap (not shown).

In the presented second embodiment of the manhole cover, it includes the above-mentioned elements of the first manhole cover with the exception of the pipe 4. In this case, the bracket 9 is connected to the rod 8 of the second manhole cover by a secret connection, and the end of the rod is located below the plate 1. The second manhole manhole cover contains the rods 12 (Fig. 7), in a known manner, fixed in additional through holes 13 of the plate 1. The rods 12 are located in the through holes 13 of the weighting agent 2 (Fig. 5, 6). The weighting agent is made sectional, including several separate sections 14. Each section 14 is made of reinforced cured concrete or other heavy material, for example, cast iron. Each rod 12 (Fig. 7) has a thread 5 at the lower end, while the upper end of each rod 12 is rigidly connected to the plate 1 by welding or otherwise.

Assembly of the hatch in its second design is as follows. Section 14 (Fig. 6) of the weighting agent 2 is sequentially mounted on the rods 12, then the flanges 10 are put on them and the nut 11 is tightened onto the thread 5 of each rod 12 (Fig. 5). Then, a rod 8 is inserted into the through holes 3 of the plate and the weighting material, a flange 10 is put on its end, and a nut 11 is screwed onto the thread 7 of the rod 8. The second hatch cover is installed in the socket of the well ring as described above, after which the bracket 9 is disconnected from the rod 8 , and the hole 3 in the plate 1 is closed with a secret cap.

In the presented third exemplary embodiment of the manhole cover (Fig. 8), it is provided that the weighting material, made of sections, can be connected to the manhole cover by means of a thickening of the manhole cover rigidly attached to the plate 1. For this, the bulge contains a metal shell 15, in which the solidified concrete array 16 is located, while the shell 15 is welded to the plate 1, and the upper end of the pipe 4 is screwed into the thread of the plate 1. With this design of the manhole cover, the plate 1 essentially becomes thickened and is used in standard cases, when the use of other sections of the weighting agent is not required. In this case, the thickening is essentially the upper section of the weighting agent.

If necessary, a removable weighting agent 2 is made under the slab and thickening (metal shell 15 and solidified concrete array 16), made of one or more sections 17 as shown in FIG. 8.

The third version of the hatch cover is mounted similarly to the first version of the cover, and after assembly of the cover into the upper threaded end of the pipe 4, screw the thread 7 of the rod 8.

After the operations, the hook of the lifting mechanism lifts the hatch in the assembled position and place it in the recess of the hatch ring 18 (Fig. 8).

In the operating position, the manhole cover is located in the manhole ring 18 and closes a well with communication line components located therein. After installing the hatch cover in the working position, the bracket 6 together with the rod 8 is removed from the cover by unscrewing the rod from the threaded hole, and the plate opening 3 is closed with a secret cap (not shown).

It is envisaged by the versions of the manhole cover that a weighting agent made of at least two sections can be connected to the manhole cover so that the upper section of the weighting agent is rigidly attached to the manhole cover, while the lower weighting section is detachably connected to the cover.

The third version of the manhole cover works as follows. The assembled manhole cover, which may have several hundred kilograms, is set to the position shown in FIG. 8.

If necessary, the corresponding length of the pipe 4 is introduced into the hole 3 of a similar weighting agent 2 having smaller or larger dimensions and smaller or larger masses corresponding to the dimensions. If the weighting agent has a relatively large mass, then it is performed sectional (Fig. 6, 8) with masses of sections 14 and 17 corresponding to the convenience of assembly.

Due to the fact that the manhole cover is made of metal and concrete and has a large mass, it is impossible to lift such a cover manually without using a lifting mechanism. This significantly increases the security of the hatch cover from its unauthorized removal from the hatch and penetration into the well, in which there is equipment of fiber optic communication lines. The implementation of the weighting material is removable and sectional, which allows changing the weight of the weighting material in a smaller or larger direction from a set of sections depending on the operating conditions of the cover. This hatch in comparison with the known lid has a relatively simple design, which has a positive effect on the complexity of its manufacture and installation.

At the same time, secret plugs and rods with secret thread for their connection with the secret thread of pipes provide essentially two additional levels of secrecy.

Claims (7)

1. A manhole cover comprising a plate with a weighting agent located on the underside of the plate facing the interior of the well, means for installing a cover in the manhole body and removing the cover from the body connected to the plate, wherein the weighting material is detachably connected to the plate and is removable. 2. Manhole cover according to claim 1, characterized in that the removable weighting material is made of concrete. 3. Manhole cover according to claim 1, characterized in that the removable weighting agent is made of at least two parts. 4. Manhole cover according to claim 1, characterized in that the removable weighting agent is attached to the plate in its central part. 5. Manhole cover according to claim 1, characterized in that the removable weighting agent is attached to the peripheral part of the plate at several points concentrically located around the center of the plate. 6. The manhole cover according to claim 1, characterized in that the removable weighting agent is connected to means for installing the cover in the body of the manhole, wherein the installation means is removable. 7. Manhole cover according to claim 1, characterized in that the removable weighting agent comprises a weighting section located under the plate and rigidly connected to it, to which at least one removable weighting section is detachably connected.

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