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Inspection well hatch lid

IPC classes for russian patent Inspection well hatch lid (RU 2310043):

E02D29/14 - Covers for manholes or the like; Frames for covers

E02D29/12 - Manhole shafts; Other inspection or access chambers; Accessories therefor (for underground tanks B65D0090100000; for sewerage E03F0005020000)

Another patents in same IPC classes:

Method for inspection well hatch manufacturing / 2307214
Method involves installing reinforcing cage of support ring and reinforcing cage of lid in mold bottom plate, wherein reinforcing cage of support ring includes inner ring formed of sheet metal and/or profiled metal and round steel rod connected to the inner ring by means of fixedly secured partitions, reinforcing cage of the lid includes outer ring made of sheet metal and/or profiled metal, reinforcing mesh fixedly connected thereto, round steel rod and upper reinforcing mesh; pouring non-metal binding material into the mold bottom plate, wherein above round steel rods of support ring and lid are pre-stressed by heat-treating thereof before filling with binding material and by tightening round steel rods with stretchers, wherein the stretchers are made as at least 12 reinforcement posts uniformly distributed along annular rod perimeter inside thereof and rigidly fastened to mold bottom plates; providing binding material strength generation; removing the ready articles from molds and cutting projected bar ends.

Inspection well hatch / 2307213
Inspection well hatch comprises support ring with orifice, reinforcing belt extending along inner contour thereof, support base, reinforcing cage and lid. The reinforcing cage includes inner ring of sheet metal and/or profiled metal and round steel rod connected thereto by means of fixedly secured partitions. Lid has support surface and reinforcing cage including outer ring made of sheet metal and/or profiled metal, lower reinforcing mesh fixedly connected thereto, round steel rod and upper reinforcing mesh. The reinforcing cages are filled with non-metal binding material. The round steel rods of support ring and lid are pre-stressed and cooperate with at least 12 reinforcement posts uniformly distributed along annular rod perimeter inside thereof.

Locking device for object to be protected, mainly for inspection pit hatch / 2306387
Locking device for inspection pit hatch, which is installed in orifice made at protected object base, comprises locking member and rotary bolt. The rotary bolt includes rod with key-operated head and locking means connected to opposite end thereof. Orifice made in base of protected object additionally has socket to receive rod head with locking member made as signal member and having shape corresponding to that of the socket so that it be secured to head in axial direction and in direction of head rotation. Signal member is made as plate provided with members cooperating with head for head fixation in axial direction and in direction of head rotation. Plate member, which prevents head rotation, has surface mating to that of key socket. Fixing member is shaped as radial teeth comb in axial direction thereof. The teeth are provided with L-shaped projections created at teeth ends and enclosing the head. Space between head and teeth flange surfaces provide interference fitting thereof. Signal plate is installed to completely close access to key-operated head.

Man-hole / 2293698
Invention relates to facilities designed for servicing high-pressure sealed equipment, such as boilers, collectors, recuperators. Proposed man-hole has oval cover. Said cover is arranged inside reservoir and is attached to movable support welded to inner surface. Central part of cover is made additionally from thin sheet in form of ellipse being pointed by convex surface inside reservoir. Stops and ribs are welded on concave surface of cover perimeter. Detachable oval half-rings provided with slots are arranged on ribs. Pressure ring is arranged on end face of oval collar secured in hole of reservoir. Detachable half-rings are clamped, together with pressure ring, by fasteners and form cover sealing device. Oval gasket is fitted n groove on end face surface of cover.

Inspection pit hatch / 2280735
Hatch comprises support ring with annular groove and reinforced lid with through orifices and lower part converging downwards. Upper lid part also converges downwards. Angle between side surface of upper lid part and vertical line is from 5° to 10°, angle between side surface of lower lid part and vertical line is equal to 25°-30°. Upper and lower lid part height ratio is 1:5 - 1:3. Two through orifices have elliptical cross-sections and are provided with steel pipes closely fitted in the orifices. The orifices are diametrically symmetric about lid center and are located from both sides of the center. Orifice ellipse axes ratio is from 2:3-2.5:3.5 and larger orifice ellipse axis has length equal to 1/15-1/20 of lid diameter. The lid and support ring are formed of high-strength concrete.

Access chamber hatch / 2278215
Hatch comprises body and lid. The body includes metal frame with ribs and covered with polymeric composition. The lid is made as vertical rod, face panel and base panel and is provided with metal sheets secured to rod, face panel and base panel. The face panel and base panes extend transversely to the rod. The metal sheets taper towards base panel and form removable frame filled with polymeric composition.

Method for manhole chimney and cover replacement / 2266370
Method involves cutting spherical part of paved road around manhole chimney and cover thereof, removing above spherical part, demounting cover and chimney; installing new chimney; filling hollow spherical space formed after spherical part removal with self-curing non-shrinking filler having high pouring ability; laying surface layer material over above self-curing non-shrinking filler without compacting thereof by roller.

Cover for manhole shaft / 2244069
Cover comprises base, fixed rests and sliding rest located diametrically opposite to fixed rests and having stop and locking device. Fixed and sliding rests are arranged on cover base from support surface side. Movable rest is made as flat cam member with stop groove and key orifices. Cam member has central key orifice corresponding to key orifice formed in cover base. Locking device is made as rotary plate performing rotation around its axis and having short and long shoulders. Rotary plate includes counterweight and stop member arranged on long shoulder from opposite axis sides. Stop member may cooperate with flat cam member groove. Short shoulder may close central key orifice made in cam member when stop member is arranged in cam member groove.

Manhole hatch / 2286425
Hatch comprises body closed with detachable lid and shaped as vertical contoured wall with horizontal support flange. The flange is provided with stiffening ribs and with orifices formed between the stiffening ribs. Vertical contoured wall has smooth outer surface. Horizontal support flange and stiffening ribs face body interior.

Floating manhole hatch / 2283922
Hatch comprises body having upper and lower parts. Inner diameter of lower body part exceeds diameter of upper body part touching the lower body part. Upper body part is provided with flange having diameter related with upper body part diameter as d_f>1.25d, where d_f is outer flange diameter. Upper body part is spaced from lower body part to provide upper body part sliding with respect to lower body part in the case of road pavement displacement. Upper body part passes into lower body part and extends inside lower body part for distance related with upper body part height as 0.25h<s<0.5h, where s is above distance, h is upper body part height.

Multi-purpose hatch locking device / 2265698
Device has disc secured to hatch lid, locking screw with wrench head, sliding nut and length-adjustable locking arms connected to sliding nut. Two pairs of guiding posts with row of coaxial orifices are fixedly connected to disc. Cross-arm adapted to be repositioned in accordance with locking degree is secured to above orifices. Smooth end of locking screw is installed in central cross-arm orifice bush. Sliding nut is formed as cross-piece with rocker arm supported by side fingers and surrounding the cross-piece. The sliding nut is connected to locking screw thread. Locking arms in its extreme positions may be brought into contact with limiters fastened to cross-arm. The first ends of locking arms are provided with length-adjustable catches, which cooperate with well wall or with lower surface of support hatch panel during hatch lid locking. The second ends thereof are attached to rocker arm of sliding nut through tension bars and axles.

FIELD: underground engineering structures for populated areas, particularly inspection wells for underground municipal service lines, namely water-supply, sewage, heat-supply, gas-supply and cable systems.

SUBSTANCE: inspection well lid has base, at least one fixed thrust and one movable rotary thrust provided with locking means arranged along a circle from the side of support lid base surface. Locking means is made as indicating member, which retains movable thrust and is damaged during movable thrust rotation. Lid has through orifice and indicating member recess, which are made along movable thrust rotation axis. The recess is formed from outer lid surface. Indicating member conform the recess and is forcedly fitted inside the recess below outer lid surface or is flush therewith. In particular case movable thrust is made as locking plate, which may rotate by key from outer side thereof. The key is inserted from outer lid side in through orifice made in lid. Indicating member is made as plastic plate with members, which prevent indicating member removal from lid and with member and/or members, which cooperate with movable thrust axis to restrict the movable thrust from rotation. Plate blocks access to movable thrust axis. Locking plate may be secured to threaded rod having head to be engaged by wrench with the use of nut. In another particular case lid additionally has orifices for mounting thrust members receiving.

EFFECT: prevention of unauthorized access in inspection well and chambers along with reliable intrusion attempt detection, extended functional capabilities, increased reliability and simplified locking means structure.

4 cl, 3 dwg

The invention relates to the field of underground engineering structures in communities and aimed at improving manholes inspection chambers underground engineering city utilities: water, sewer, heat, gas and cable networks.

Currently, due to the threat of terrorism, the need arose for the equipping of wells engineering communications manhole cover with locking devices to secure the detection of attempts of unauthorized access to manholes and chambers.

Known manhole covers observation wells with locking devices do not have controls that detect attempts at unauthorized opening.

Known manhole cover observation well from the description of the patent RU 2044837 published 1995.09.27 containing the shut-off device made in the form attached to the lugs on the lower surface of the cover with the possibility of angular displacement in the plane of the tides hollow cone stops, evenly spaced along the circumference of the cover and contacting with the lower edge of the support ledge of the hull hatch observation well, and having on the remote from the support ledge of the housing outer conical side surface of the curved area, and in the hatch on the diametrical axis passing through the tide is, closer to the center of the cap threaded holes, in which are installed in contact with curved platforms lugs bolts, the heads are placed in the bores on the outer surface of the cover.

The disadvantage is the complexity of the design, and the inability to control the opening of the hatch.

Known inspection hatch manhole cover with locking device patent RU 2133796 published 1999.07.27, comprising a housing with a through hole in the side wall, with a support belt, a support base and grooves, the cover with a through hole and protruding consoles, interacting with the slots of the housing. Through holes of the cover and the housing is fitted with a rotation axis of the levers, interacting when turning at least one of the rotation axes, the geometric axes of which intersect in the space bounded by the cover and the housing. Rotation axis of the cover is made in the form of a bent lever with a locking slit-slot for engagement with the rotating axis of the housing, a curved lever may be performed either at the same time, either as a separate item mounted stationary relative to the rotation axis.

The disadvantage is the complexity of the design, and the inability to control the opening of the hatch.

Most Blimber is Kim the technical nature of the present invention is a manhole cover observation wells, described in the abstract of the patent for the invention "inspection Hatch pit underground utilities" EN 2106456 published 1998.03.10. Manhole cover, contains placed side support surface of at least one stationary stop and located diametrically movable driven focus with locking device. Interacting with the mouth of the hatch ends of the lugs are removed from the supporting surface of the cover to the value of over the thickness of the cap body, with the movable stops are pivoted and provided with a control head which is placed in a recessed relative to the plane of the cover glass, and the locking device placed in the body of the head control.

The disadvantage is the complexity of the design (increased complexity of manufacturing), low reliability closure devices cover due to the possibility of thread wear it with the threaded stem and elements under the key, and the inability to control the opening of the hatch.

These drawbacks are eliminated in the present invention.

The objective of the invention is to provide a hatch cover inspection of the well, providing limited access of unauthorized persons in the observation wells and the camera is guaranteed to detect access attempts.

The technical result - the expansion of the functionality of the device, increasing the dinasti and simplify the design closure devices.

This object is achieved in that the hatch observation wells containing the base, placed along the circumference of the reference surface of the base cover, at least one stationary stop and one movable turning the focus with the locking device, the locking device is made in the form of a signal element, the locking movable piece and breaking when it is turned, and the cover is located on the axis of rotation of the rolling stop through hole and a slot, for example in the form of an ellipse or polygon under the signal element, and the nest is made from the outer surface of the cover, and the signal element is designed in the form of slots, and is it with tightness below or at the level of the outer surface of the cover.

In the particular case of the movable stop is made in the form attached to the rod striker, with the possibility of turning the key from the outer side through a through hole in the lid, and the signal element is designed in the form of a plastic plate with the elements, preventing its extraction, and the element (or elements), interacting with the axis of the rolling stops providing its fixation against rotation, and plate blocks access to the axis of the rolling stop.

Embodiment is securing the locking flanges on the rod with Katya the overall head turnkey, having threaded through the nut.

In the private case cover further comprises holes for fasteners stops.

The combination of the proposed indication the applicant is not known from the field of technology, so this solution meets the criterion of novelty.

Significant differences device are:

1. Performing closure devices hatch cover in the form of a signal element, the locking movable piece and breaking when his turn.

2. The lid is made on the axis of rotation of the rolling stop through hole, and a slot under the signal element, and the nest is made from the outer surface of the cover, and the signal element is designed in the form of slots, and it is scarcely below or at the level of the outer surface of the cover.

3. The movable stop is made in the form attached to the rod striker, with the possibility of turning the key from the outer side through a through hole in the lid.

4. The signal element is designed as plate elements, preventing its extraction, and the element (or elements), interacting with the axis of the rolling stops providing its fixation against rotation, and plate blocks access to the axis of the rolling stop.

5. Securing the locking flanges on the rod cover head turnkey, with pain is, through the nuts.

6. The execution of the signal element of colored plastic.

Signs 1, 2, 4 not known to the applicant from the prior art.

The combined use of distinctive signs in the inventive device allows to obtain the desired technical result, namely due to the characteristics 1, 2, 4 is provided exception of concealment of unauthorized access manholes. The choice of features 1, 3, 5, 6 makes installation easier rolling stop at the base of the lid.

The proposed design makes it easy to provide the desired clearance when installed between the bottom edge of the support ledge of the hull hatch observation well and the locking bar by selecting the size of the clearance between the locking bar and the surface of the hatch cover, for example, the selection of washers desired thickness, thereby the closure devices disposable (in the form of a replaceable with each opening of the cover signal element) excludes damage.

The combined use of signs eliminates the complicated locking devices and at the same time provide the possibility to control the opening of the hatch. The movable fence is easy to install and does not require additional fastening to the base of the hatch. The proposed solution enables the use of existing manhole covers, for example, issue Lennie in accordance with GOST 3634-99.

The locking device provides reliable fixation of rotation of the rolling stops due, on the one hand, planting, for example, by interference fit, and shape of the socket cover, return the form of a signal element, on the other hand, elements, interacting with the axis of the rolling stops, for example, made in the form of covered surface of the mating surfaces, the head of the rod in the form of, for example, an axial socket in the form of a polygon, and simultaneously performs the function of the control element, collapsing at breaking (opening hatch cover outside face), with the external side of the cover and the inner. Thereby expanding the functionality of the locking device.

An additional feature is that the locking device performs a stub function that prevents the penetration of dirt into the planting hole rolling stop and the elements.

The invention is illustrated by drawings:

Figure 1 - manhole Cover Assembly. View from the side of the support surface.

Figure 2 - Section A-a in figure 1.

Figure 3. - Turning the focus. The node 2

In figure 1, 2 presents manhole cover observation wells containing the base 1 placed side support surface of the base 1 fixed focus 2 and the movable rotary stop 3, a through hole with slot 4.

Figure 3 presents the var is ant swivel lock with 3 locking device 5, made in the form of the signal element in the form of a socket, for example in the form of a plate 6 with the elements 7, 8, interacting with the axis of the rolling lock with the locking bar 9 on the rod 10 with the cylinder 11 with the socket under the key 12. Striking plate 9 is mounted on the rod 10, for example on the threads through the nut 13.

Fig 3. shows the version of the element 7 in the form of radially arranged teeth with G-shaped protrusions at the ends, covering the head 11 and hinder the extraction of the signal element from the socket without damage. Element 8 is shown in the form of the response surface nests under the key 12 in the form of a polygon.

In figure 1,2 POS shows a variant of the installation of a cover on the basis of the hatch well.

The hatch observation wells installed on the supporting ledge 15 of the hull hatch 14. Using the key, for example, covered hexagonal (Fig. not shown), rotates the rod rolling stop 10 to the interaction of the striker 9 with axial protrusion 15 corps observation wells 14 (30-90 degrees). Striking plate is removed from the supporting surface of the cap by the amount more than the thickness of the support ring and hooks him from the bottom side. In the nest at the base of the hatch cover 1 is installed shut-off device - a signal element 5. Shut-off device is closed. During operation, the farm is correspondingly control over the access hatch on the integrity of the plate 6, which, for example, has a red color. When you try turning the plate is destroyed, as made for example from plastic Polyethylene 21008-75, GOST 16338-85. Integrity plates visually detect that the opening of closure devices. If necessary, the cover opening signal element is broken by the impact, for example, scrap.

1. Manhole cover observation wells containing the base, placed along the circumference of the reference surface of the base cover, at least one stationary stop and one movable turning the focus with locking device, characterized in that the locking device is made in the form of a signal element, the locking movable piece and breaking when it is turned, and the cover is located on the axis of rotation of the rolling stop through hole, and a slot under the signal element, and the nest is made from the outer surface of the cover, and the signal element is designed in the form of a socket or is it below or at the level of the outer surface of the cover while the movable stop is made in the form attached to the rod striker, with the possibility of turning the key from the outer side through a through hole in the lid, and the signal element is designed as plate elements, preventing its extraction, and the element that interacts with the completion of the rolling stops providing its fixation against rotation, moreover, the plate blocks the access to the axis of the rolling stop.

2. Manhole cover observation wells according to claim 1, wherein the striking plate is fixed on the rod cover head turnkey, having threaded through the nut.

3. Manhole cover observation wells according to claim 1, wherein the cover further comprises holes for fasteners stops.

4. Manhole cover observation wells according to claim 1, characterized in that the security element is made of colored plastic, while the plate element has the shape of an ellipse, or polygon.