RU2340730C2 - Inspection well manhole - Google Patents

Abstract

FIELD: construction industry.

SUBSTANCE: inspection well manhole consists of casing with through holes made in the side wall and support band. Casing is installed on support platform. At least three planks are attached to casing side wall inner surface under support band, and with their other ends they are attached to manhole inner side wall. Cover with through holes and cutouts from outer surface side, wherein locking devices are mounted, is installed on casing support band, and lugs either in the form of ribs, or a solid ring are provided on inner surface. Locking device is made in the form of locking screw with a cap designed for a special wrench and lead-screw nut with locking lever rigidly fixed thereon and contacting the casing side wall and support band lower plane when being locked, and one of cover's lugs when being opened. Ring is rigidly fixed on lower locking screw end. Inspection well manholes and street storm-water inlets of any configuration can be designed according to the proposed technical solution. At that manhole covers and street inlets' grids can either be freely supported on casings, or hinged to them.

EFFECT: simple and secure attachment of manhole casing to well walls, simple construction of locking device, secure attachment of cover to casing of any configuration, and installation and removal of cover without using lifting devices.

4 cl, 8 dwg

Description

The invention relates to the construction, in particular, to the designs of manholes of manholes and storm water inlets of stormwater wells.

A well-known manhole hatch (according to the USSR AS No. 1601288, IPC E02D 29/14, published in 1999), comprising a housing with a support belt, a cover with a through hole and a locking device made in the form of discreetly arranged circumferentially on the bottom the surface of the lid of at least three pairs of supports with elastic elements attached to them, which are in contact with the lower surface of the support girdle of the housing. The disadvantage of this technical solution is that the locking and unlocking of the hatch is carried out by means of an assembly crowbar, which allows unauthorized penetration of unauthorized persons into the well; in addition, the hatch body is installed on the upper support platform of the well without fastening to it, which does not exclude the spontaneous shift of the hatch from the support platform of the well and thereby create an emergency situation for the movement of motor vehicles.

Also known is a manhole hatch (see, for example, AS USSR No. 1392209, IPC E02D 29/14, published 1988), comprising a housing with a support ring and a lid with a locking device in the form of truncated truncated lid mounted in tides cones interconnected by rods and a common spring-loaded rod, the head of which is brought out through the central hole of the cover.

The disadvantage of this hatch is the following: firstly, locking the lid with the body is carried out using a spring, which loses its elastic properties from time to time, and as a result, the locking device can spontaneously open and the lid is shifted from the hatch body; secondly, the locking device is opened using a crowbar, which does not exclude the unauthorized opening of the hatch and unauthorized entry of unauthorized persons into the well; thirdly, the hatch body is installed on the support platform of the well without fastening, which can lead to a shift of the hatch from the support platform and to the opening of the well.

The closest in technical performance, selected as a prototype, is the manhole cover (see, for example, the description of the patent of the Russian Federation No. 2133796, IPC E02D 29/12, published. 1999), comprising a housing with through holes in the side wall, with a support sole and a supporting girdle, a cover with through holes and protruding tides and a locking device in the form of fixed axes interacting with each other, installed in the housing openings and installed in the roof openings shafts of rotary axes with bent levers with locking slots-slots at the ends. As a drawback of this hatch, it is necessary to note the complexity of manufacturing the locking device, since in order to ensure lockability, it is necessary to maintain the exact distance from the lower surface of the support belt to the axis of the holes in the side wall of the housing. The complexity of manufacturing lies in the fact that the holes in the lid must be made at an acute angle to the surface of the lid, which will require the use of sophisticated equipment or special equipment. When processing inclined holes in a universal way, errors in the location of holes will inevitably occur, which will lead to mismatch of the slots in the levers with the locking surfaces of the axes installed in the housing. With a significant expansion of the slot, a large gap may occur between the slot and the axis, which will lead to a weakening of the fastening and spontaneous opening of the locking device.

In all the described hatches, the hinge is not provided for fixing to the support platform of the well, which can lead to spontaneous shear of the hull and opening of the opening of the manhole. All this can lead to an emergency or unauthorized entry of unauthorized persons into the inspection well.

The reinforced hatch of the hatch body on the well support platform is known with the help of anchor bolts or special tides made on the outside of the body (see GOST 3634-99, page 8, Fig. A-4. “Manhole covers and storm water inlets”). In these cases, reliable mounting of the housing on the supporting platform of the inspection well is achieved. But the option of fastening with anchor bolts provides for the closure of anchor bolts or the entire body into a concrete slab during the manufacture of the latter. The option of attaching the casing to the well pad using special tides provides for embedment of the casing with concrete during its installation and complicates the design of the casing. Both of these options are expensive.

The technical task of this invention is to create a manhole manhole and a similar storm water inlet well with a shut-off device that provides reliable mounting of the housing of any configuration on the well support platform, reliable and convenient fastening of the cover to the housing with any method of their connection.

The technical result is achieved by the fact that on the side wall of the housing well installed on the support platform, under the support belt, at least three straps are fixed through the through holes, which are attached with free ends to the inner side surface of the well with either expansion screws or steel dowels. The cover mounted on the support belt of the housing has through holes with recesses from the outer surface and tides on the inner surface of the cover.

The locking device is made in the form of a locking screw mounted in the through hole of the cover with a head and socket for a special key and a driving nut with a locking lever that interacts with the side wall of the housing and the lower plane of the support belt when unlocking, and with one of the cover tides when unlocked. A ring is fixed on the lower end of the screw, for example by means of a pin. Depending on the configuration of the hatch, the installation location and the method of connecting the cover to the body, one, two or more locking devices can be installed. According to the proposed technical solution, a storm water inlet well inlet can also be made, in which instead of a cover, a grate is installed on the support belt of the housing.

The noted properties of the proposed technical solution determine the achievement of a positive effect of the claimed device. Therefore, the claimed technical solution meets the criteria of the invention “significant differences”, and the new proposed combination of essential features confirms their reliability for the recognition of “inventive step”.

The invention is illustrated by drawings, where

in FIG. 1 shows a sectional manhole hatch;

in FIG. 2 is a view “A” of FIG. one;

in FIG. 3 - cut-off device;

in FIG. 4 is a view B of FIG. 3;

in FIG. 5 - an option for fixing the hatch of the hatch with steel dowels to a concrete slab;

in FIG. 6 - an option for fixing the hatch of the hatch with steel dowels to the brick wall of the well;

in FIG. 7 - shows a variant of the hinged connection of the cover with the housing;

in FIG. 8 - shows a storm water inlet, top view.

The manhole of the manhole (see Fig. 1, 2, 3, 4, 5, 6, 7) includes a housing 2 installed on the support platform 1 of the well with through holes 3 in the side wall 4 and the support belt 5. On the inner surface of the side wall of the housing under the support belt 5 through the through holes 3 with bolts 6 and nuts 7, at least three strips 8 with spacer screws 9 are fixed at their free ends, abutted on the inner side surface 10 of the well (see Fig. 1 and 2). The straps 8 can be attached to the inner side surface 10 of the well with steel dowels 11.

A cover 12 is installed on the support belt 5 of the housing 2 (see FIGS. 1, 2, 7), in which through holes 13 are made with recesses 14 from the outer surface side for installing locking devices 15 in the amount of one or more sets. Tides 16 are made on the inner surface of the lid to stiffen the lid itself and interact with the locking levers of the locking devices. Therefore, the height of the tides is sufficient to interact with the above-mentioned levers. Tides can be made in the form of three or more ribs, either in the form of a continuous ring, or in the aggregate of a ring and ribs.

The locking device is made in the form of a locking screw 17 with a head 18 and a socket for a special key and a driving nut 19 with a locking lever 20 rigidly fixed on it (see FIG. 3), interacting when locking with the side wall 4 of the housing 2 and with the lower plane 21 support belt 5 (see figure 4), and when unlocked with one of the tides 16 of the cover 12.

A ring 22 is rigidly fixed (for example, via a pin) to the lower end of the locking screw. In the recesses 14 of the cover 12 above the heads 18 of the locking screws 17, for example, rubber plugs 23 are installed (see FIG. 3), which protect the locking devices 15 from dust and dirt. According to the proposed technical solution, the cover 12 and the housing 2 can be connected by a hinge. In this case, a tide 24 is made in the housing with a groove 25, in which the eyelet 26 of the cover 12 is mounted, the cover is connected to the housing by an axis 27. When the cover 12 is pivotally connected to the housing 2, one locking device 15 can be installed in the cover.

With the cover 12 lying freely on the support belt 5, two or more locking devices 15 are installed in it. The housing 2 is fixed to the inner side surface 10 of the well in any case with the help of slats 8 and either with spacer screws 9 or steel dowels 11 (see Fig. .1, 5, 6).

According to the proposed technical solution, a storm water inlet well can also be made (see FIG. 8). In this case, the housing 2 is made and fixed on the support platform 1 of the well according to the same scheme as the hatch body of the inspection well, and instead of the cover 12, the grill 28 is installed. The grill 28 can be connected to the housing 2 either pivotally or freely lie on the support belt 5 (see GOST 3634-99), and its configuration can be either round or rectangular. The connection of the cover with the housing is carried out according to the above scheme. In the case of a significant length of the storm water inlet, the grill 28 can be connected to the housing 2 with two or more hinges, and one or more shut-off devices 15 can be installed.

The manhole manhole works as follows. On the support belt 5 of the housing 2, mounted on the support platform 1 of the well and secured by straps 8, lower the cover 12 with locking devices 15 (see Fig. 1). With a special key inserted into the socket of the head 18, the locking screw 17 is rotated, with which the running nut 19 rotates and the locking lever 20 is rotated with it, which rests against the side wall 4 of the housing 2 (see Figs. 2 and 3). When the locking lever abuts against the side wall of the housing, its rotation together with the travel nut 19 is stopped. With a further rotation of the locking screw 17, the driving nut 19 together with the locking lever 20 moves along the thread until it stops into the lower plane 21 of the support belt 5 (see Fig. 3). The lid 12 is fastened to the housing 2. In a similar way, all the locking devices 15 installed in the lid are fastened. At the end of the fastening, lids 23 are mounted in the recesses 14 of the lid 12. The hatch is closed and ready for operation.

When opening the lids 12 from the recesses 14, the plugs 23 are removed. Then, the locking screw 17 is turned the other way with a special key inserted into the socket of the head 18. First, the locking lever 20 together with the driving nut 19 moves along the thread of the locking screw and moves away from the lower plane 21 of the support belt 5, and then together with the locking screw 17 is rotated all the way to one of the tides 16. With a further rotation of the locking screw 17, the driving nut 19 together with the locking lever 20 moves along the thread until it stops at the end of the ring 22. There is a tight fit of the running nut to the end of the ring. The rotation of the locking screw 17 is stopped. By the described method, all locking devices 15 installed in the cover 12 are unfastened. After that, the cover 12 is removed from the housing 2, allowing access to the inside of the well.

In the case of a hinged connection between the body 2 and the cover 12, the latter, rotating around the axis 27, is lowered to the support belt 5. By rotation of the locking screw 17, the cover 12 is secured to the body 2. Insert a plug 23. The hatch is prepared for operation. When opening from the recess 14, remove the plug 23 and rotate the locking screw 17 to the other side and unfasten the cover 12 from the housing 2. Raise the cover, rotating it around axis 27, open the hatch, providing access to the underground utilities inside the well.

When servicing the storm water inlet well, the grill 28 is fixed to the casing 2 and detached from it by the same method as the manhole cover of the manhole.

Claims (4)

1. The manhole of the manhole, comprising a housing with through holes in the side wall and with a support belt, a cover with through holes and tides from the inner surface and a locking device, characterized in that on the inner surface of the side wall of the housing under the support belt through the through holes are fixed, at least three strips, with their free ends attached to the inner side surface of the well, the locking device is made in the form of a locking screw installed in the through hole of the cover with a hollow with a special key at the upper end, with a ring rigidly fixed at the lower end, and with a running nut mounted between them with a locking lever rigidly fixed to it, interacting when locking with the side wall of the housing and the lower plane of the support belt, and when unlocking, with one of the tides of the cap. 2. The hatch according to claim 1, characterized in that the strips are attached to the inner side surface of the well with either expansion screws or steel dowels. 3. The hatch according to claim 1 or 2, characterized in that in the through holes of the cover can be installed one or more locking devices. 4. The hatch according to claim 3, characterized in that the cover can be connected to the housing by means of a hinge or be freely lying.

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