ES2248263T3 - REGISTRATION WITH ARTICULATED COVER PROVIDED WITH ANTI-THEFT DEVICE, FOR SOIL EXCAVATIONS. - Google Patents

Abstract

Record provided with an articulated cover, intended to cover, or selectively access an excavation carried out on the ground, comprising a frame (1) that delimits access (2) to the excavation and a cover (3) adapted to be able to to be moved in a movement that is approximately pivoting about an approximately horizontal axis, which rests in the frame between a closed position in which it approximately covers the access and an opening position to the top in which it substantially releases said access, being the cover (3) and the frame (1) provided with reciprocal articulation means constituted by at least one pin (30) of the cover and at least one socket (10) of the frame, which have reciprocal support surfaces for cooperating with each other during said approximately pivotal movement, the spike presenting in the region of its free end separated in a space with respect to the wall (11) of the socket facing each other when the cover is in the closed position.

Description

Registration with articulated lid provided with anti-theft device, for soil excavations.

The present invention relates to records of plug or articulated grid forming a plug, and refers more particularly to records comprising a lid of this type, articulated, placed on public roads in order to cover, or be able to selectively access excavations practiced on the ground, such as ditches or inspection wells or of access to underground galleries.

For security reasons, as well as for economic reasons it is essential that the record covers installed on public roads cannot be removed, except in case of necessity, by authorized personnel.

For this purpose, the records are already known equipped with a device that prevents the lid from being removed from purely manual way.

However, most of these devices are visible from the outside when the lid is in its position of closure, and can be disassembled using classic tools.

Anti-theft devices are also known invisible or poorly visible from the outside, but which can be disassembled or destroyed with relative ease when the lid is is in its opening position, which is possible without large difficulty when the record has no lock.

The object of the invention is to overcome these drawbacks, and to that effect it refers to a register provided with an articulated lid, intended to cover or selectively access an excavation carried out on the ground, a record comprising a frame that delimits access to the excavation and a cover adapted to be able to be moved in a movement that is approximately pivoting about an approximately horizontal axis, which lid rests in the frame between an opening position to the stop in which it substantially releases said access, the lid being and the frame provided with means of mutual articulation constituted by at least one pin of the cover and at least one socket of the frame, said pin and said socket having mutually supporting surfaces adapted to cooperate with each other during said approximately pivoting movement, presenting the pin in the region of its free limb separated from the wall of the alveolus in front of it when the lid is in a closed position for a space, an articulation head comprising at least one lateral ram that is housed, when the lid rests on the frame, at least partially under at least one edge of the socket that is in projection and which in turn extends in the direction towards said wall of the socket at a certain distance from it, a register characterized in that it comprises, housed in said space, a stop plate for the articulation head, which rests on less a support surface that is part of the frame, which restricts the possibility of moving the cover in the direction towards said wall of the socket to a path that is insufficient for the spur to cease to be under the projection, at least partially, of said edge of the socket, and the socket ends at the outside of the frame, by its base, such that said space is in communication with the outside of the frame by means of a hole that allows the passage of the platelet for positioning in said
space.

Thanks to this structure, it is possible to mount the platelet below the frame, the arrangement of the device anti-theft is poorly visible, and is therefore extremely difficult separate the cover from the frame without extensively damaging the registry, what which is impossible with the usual hand tools.

The registration according to the invention can also have one or more of the following characteristics:

- the cover comprises a spike that presented lateral spurs and the frame comprises an socket whose walls laterals are provided with surfaces for spike support and that delimit an edge of the alveolus that is in projection and that extends in the direction towards the wall of the socket that is in front of the free end of the spike when the lid is in its closed position;

- the cover comprises a spike that has two lateral spurs and the frame comprises an socket whose walls laterals are provided with at least one surface for the support of the spike and that delimits an edge of the socket that is outgoing and extending in the direction towards a wall inside the socket whose upper part serves as a seat for the top;

- the socket comprises side walls that they have respective retention slots that extend against said wall of the socket facing the free extremity of the pin when the cover is in its closed position, and the platelet includes side trunks mounted so that slide into said slots;

- the side walls have grooves of respective introduction to introduce the stumps into the grooves of retention, one of whose limbs flows into said groove of retention, and the opposite limb flows into a surface of the socket intended for spike support, with a lower edge being of the platelet adapted to rest on an interior surface of a dripper or gutter carried by at least one of the walls of the socket;

- the side walls are provided with respective slots that include notches, adapted for cooperate by ratchet effect with notches carried by lateral edges of the platelet, and the platelet also comprises a compressible material brass that allows the sliding of the platelet between a waiting position and a safety position anti-theft device;

- the cover comprises two pins each of the which has at least one side spur, and the frame It comprises two cells that have an outer wall and bearing surfaces for a respective spike, both being alveoli separated from each other by a T-partition that extends from said outer wall of the frame to an inner wall of the frame, presenting a widened part of the T-partition, regions edge extending to the outer wall and that, when the lid is in closed position, protrude, at least partially, with respect to the spurs of the spike;

- the platelet has two lateral branches adapted to rest on support surfaces that form part of the frame, said support surfaces being constituted on top of upper support surfaces each of which equips the socket to support the spikes respective and by one of the edges of the edge regions that protrude above the alveoli;

- the platelet presents in one of its limbs, a retracted leg;

- the lower part of the socket is provided with a sealing material.

Other features and advantages of the invention they will be put in greater evidence by the following description of embodiments given by way of non-limiting examples, represented in the accompanying drawings in which:

- Figure 1 is a schematic view in perspective, of a stop plate with which a first embodiment of a register according to the invention;

- Figure 2 is a schematic section of the articulation region of a register according to the first form of embodiment, in which the lid is shown during the course of a phase of insertion in the frame in opening position at 90 degrees with respect thereto, the stop plate not being in a anti-theft protection position but in a waiting position in the frame so as to allow the positioning of the lid on its place.

- Figure 3 is a schematic section similar to of Figure 2, but in which the lid is in the position of closing in the frame:

- Figure 4 is a schematic section similar to of figures 2 and 3, but in which the stop plate is in anti-theft protection position in the frame and the cover is in its butt opening position;

- Figure 5 is a schematic section similar to of Figure 4, but in which the lid is shown during a withdrawal attempt in opening position at 90 degrees with respect to the frame; the stop plate in the anti-theft protection position prevents the removal of the lid;

- Figure 6 is a schematic section according to the line VI-VI of figure 5 in which it has not been represented the cover;

- Figure 7 is a schematic section corresponding to that of figure 2 of a register according to a second embodiment; a stop plate is observed, also according to a second embodiment, in the waiting position in the frame, so as to allow the positioning of the lid in place;

- Figure 8 is a schematic section similar to of figure 7, but in which the stop plate is in anti-theft protection position in the frame and the cover is shown during a withdrawal attempt in an open position at 90 degrees with respect to the framework; the stop plate prevents such removal;

- Figure 9 is a schematic section according to the line IX-IX of figure 8, not having represented the cover;

- figure 10 is a schematic section corresponding to the cuts of figures 2 and 7, of a record according to a third embodiment in the absence of the plate stop, top, maximum as a noun, top as an adverb;

- Figure 11 is a schematic section similar to of figure 10, but the lid being in the closed position in the frame, along the line XI-XI of the figure 12;

- Figure 12 is a schematic view from above, corresponding to the cut of figure 11;

- Figure 13 is a schematic view from above, of the stop plate according to a third form of realization, intended to be inserted in the registration framework according to the third embodiment;

- Figure 14 is a schematic section of the platelet of figure 13 according to line XIV-XIV of figure 13;

- Figure 15 is a schematic view from above, similar to that of figure 12, but in which the plate stop is in the anti-theft protection position in the frame; Y

- Figure 16 is a schematic section similar to of figure 11 along line XVI-XVI of the figure 15, corresponding to said figure 15 in which the platelet butt is in the anti-theft protection position in the framework.

The articulated lid register, represented in partial form in the figures, it is a record with closing element or cap, usually cast, that can be used either to cover a well dug in the ground to inspect a gallery underground to access the gallery. Yes well in this case said register has a general circular form, of course said form is not limiting.

The register comprises an annular frame 1, which delimits an access 2 to the well, the closing element 3 and the frame articulated with each other by means of articulation reciprocal, so that the closure element or cap can move in a movement that is approximately pivoting (in general terms, a pivot movement accompanied by a slight sliding of its support surfaces on the frame support surfaces) about an axis approximately horizontal, resting on the frame between a closed position in which covers approximately the access and an opening position butt in which it substantially releases said access.

In this case, the word "horizontal" means (and will do so throughout the text), "parallel to the plane in which extends the frame "although said plane may be slightly inclined if the register is intended to be implanted on the surface of a sloping ground, and the word "vertical" will mean "perpendicular to the plane in which it extend the frame. "

In the embodiment of Figures 1 to 6, the means of mutual articulation of the closure element, or plug, 3, and of the frame 1, are respectively a spike 30 of the element of closure and a socket 10 of the frame, but of course the amount of Spikes and alveoli can be superior.

The socket 10 of the frame 1 is limited by a wall 11 which is the outer wall of the frame, and in front of it by a wall 12 whose upper part, which supports the element of closure 3, is below the level of the top of the outer wall 11, the difference in levels being such that the face upper closing element is flush with the upper part of the outer wall 11 when the closure element is in closing position; there is a seal (not shown) interposed between the top of the wall 12 and the element of closing. The outer wall 11 comprises an edge 111 that protrudes partially with respect to the socket, whose edge serves as a stop for the closing element to define a butt opening position (figure 4).

Laterally, the socket 10 is delimited by two facing walls 13 on which they are defined bearing (and sliding) surfaces for the closure element 3 during its approximately pivotal motion that has been previously mentioned; these surfaces will be described more Go ahead in detail.

Instead, the socket 10 is devoid of bottom and therefore its base flows to the outside of frame 1.

As seen, the closure element 3, which in this case has a general circular shape, carries, in protrusion with respect to its circular contour, a pin 30 adapted pair inserted into socket 10.

For reasons of convenience, the terms such cone "up", "down", "upper", "lower", "above", "below", "above", "below", used to position certain parts of the closure element, they will serve as a reference for the placement of these parts when the cap is in the closed position.

The spike 30 comprises, in its region close to its splice with the generally circular part of the element of closure 3, which is adapted to cover access 2 in the position of closure, a part 301 of reduced thickness whose incoming faces, respectively lower and upper, they are approximately flat and parallel; instead, in your region where your free end, the spike comprises a head 302 comprising lower and upper regions that extend in excess thickness with with respect to the faces of part 301; the lower region of the head 302 comprises two spurs 303 protruding laterally with with respect to the lateral faces of the upper region of the head; the lower and upper faces of the spurs are approximately flat and parallel, with the exception of the fact that the lower face it also has a protuberance 304 down, so rounded, in the immediate proximity of the free limb of the spike. The lower and upper surfaces, as well as the spike edge surfaces capable of coming into contact with the socket 10 during an approximately pivotal movement of the closure element, and especially of the spurs, constitute the spike support surfaces.

The support surfaces for the spike and especially for the spurs 303, of each of the side walls 13 of the socket 10, follow each other from the upper face of the frame 1, on a part of the height of the socket, and have the same profile on both walls. Each of these walls therefore comprises two successions of support surfaces arranged facing each other, the one on the side of the outer wall 11, and the other on the side of the inner wall 12. At the top of the socket 10, the facing bearing surfaces are separated from each other at a distance slightly greater than the thickness of the spurs 303 of the spike 30 in order to allow the insertion of the same in the socket only when the closure element is in an approximately vertical position; in said upper part, a first supporting surface 131 located on the side of the inner wall 12, extends vertically some mm in height, and the supporting surface 132 that follows it approaches said wall 12 first almost horizontally so as to constitute an edge of the alveolus manifestly cantilever in the direction of the outer wall 11, after which it continues substantially vertically so as to finally be fixed to said wall 12; also in the upper part of the socket, the upper bearing surface 133 located on the side of the wall 11 that initially moves away from said wall 11, then descends vertically by a few mm, and the bearing surface 134 which is its extension approaches the outer wall 11, in projection with a weak downward inclination; the next support surface 135, again moves away from the outer wall 11 forming a curved ramp that ends approximately halfway up the socket, at a distance from the inner wall 12 approximately equal to the thickness of the spurs 303; extends a few mm on an approximately vertical terminal surface 136 that ends at the bottom of the socket 10 whose base flows into the outside of the frame 1 by means of a hole
100

Due to the shape of the support surfaces, the head 302 can be inserted into socket 10, only when the closure element, or plug 3, is in a position approximately vertical (figure 2); when the spurs 303 is found completely below the level of the edges overhangs defined by support surfaces 131, 132, 133, 134, and belonging to the socket, the closure element can pivot towards its total opening position at approximately 110 degrees with with respect to the frame, in which position its part 301 thick reduced is in contact with the edge 11 of the socket outstanding, and a part of its protuberance 304 is supported against the lower part of the bearing surface 132 belonging to the socket on the side of the inner wall 12, which preferably tightly follow the contour of this part of the bump 304; it can be seen that there is also a stable position security intermediate (not shown) in which the element of closure 3 is locked in an angular position at 90 degrees approximately not with respect to the frame; in this position, the face top of the 301 part of the spike at the place of its splice with the circular part of the closure element is supported against the upper bearing surface 133 of the outer wall side 11, and the underside of part 301 is resting against the first vertical support surface 131 of the inner wall side 12, while the ends of the spurs 303 are inserted between the inner wall 12 and the vertical support surface terminal 136: alternatively, the closing element can pivot towards its closing position by raising the support surfaces belonging to the ram against the curved ramp 135 of the socket, leaning on the underside of the spikes 30 against the upper support surface 131 of the inner wall side 12: in this closing position, in which the closing element rest horizontally on your seat, the spurs are partially housed and retained under the protruding edges of the socket 10 defined by its bearing surfaces 131, 132, 133, 134 (figure 3).

With this structure, pin 30 of the element of closure 3, can be removed from socket 10, and in this way the closure element can be separated from the frame, when the element of closure is in an approximately vertical position.

To suppress this possibility, in the space of socket 10 separating the free end of the spike 30 when the closing element is in its closing position, on the wall 11, a stop plate 4 is housed, for the head (figure 1), intended to be then positioned in a position approximately vertical in the socket against the outer wall eleven.

Said platelet 4 comprises a body 40 that it has a slightly angled shape that forms a dihedral angle D very obtuse that opens towards the outer wall 11, extending the edge of the dihedral in approximately one direction horizontal and medium length of the platelet; in addition, the part of upper end of platelet 4 is approximately folded at right angles towards the outer wall 11 of a very short length, and the two lateral edges 41 of said part of folded limb carry two respective cylindrical stumps 42 for retaining the plate against the outer wall 11.

To retain the stop plate 4 against the outer wall 11, each of the side walls 13 of the socket comprises a slot 137 that extends in one direction approximately vertical in the socket against the outer wall 11, approximately vertical, adapted to receive, slip by means of a respective stump 42 of the platelet 4; for the purpose of allow the insertion of the stump 42 into this slot 137, each of the side walls of the socket also comprises a slot 138 slightly tilted up towards the wall exterior 11, one of whose limbs flows into the groove vertical 137 and whose opposite extremity flows into the surface which forms a curved ramp 135, of socket 10.

To support the stop plate 4, the wall exterior 11 of frame 1 comprises a dropper or gutter 112 which is extends in socket 10 towards the inner wall 12, below the level of the lower extremity of the surface of support 136 approximately vertical.

Platelet 4 is therefore able to adopt two positions, namely a position of protection against theft, or anti-theft position, and a waiting position in which you are placed before being put in protective position anti-theft device.

Said more precisely, before positioning of the closure element 3, the platelet 4 is introduced in socket 10, above the frame, or also from below the same, presenting the hole 100 of the base of the socket 10, dimensions sufficiently extended to allow the passage of the platelet 4 to the space of the socket in which the platelet has to be placed, both stumps 42 slide in the grooves inclined 138, and takes them down to the bottom of the vertical slots 137; the body 40 of the platelet 4 is located then leaning against the outer surface of the dropper or gutter 112 (figures 2 and 3). The closing element 3 can then be placed in place and eventually be removed; when the closure element is in place in any position, the spike 30 masks the platelet in a virtually perfect, and also prevents it from escaping from the socket 10. To put the support plate 4 into service, the element is placed of closing 3, in opening position either in the intermediate position stable at 90 degrees, either in the position of total opening at 110 degrees, and the platelet is pushed from the bottom up until its lower edge can be introduced into the support gutter 112, and falls against the inner surface of said gutter of support. In this position, the plate 4 is integrated into the box and it practically lacks gear, which makes it practically Inaccessible.

Under these conditions, plate 4 limits the possibilities of displacement of the closing element 3, in space in the direction towards the outer wall 11 of the socket 10, to a path that is insufficient for the ram to stop being at least partially, below the ledge formed by the minus a protruding edge of the socket 10; it is therefore impossible Remove the closure element.

In summary, this structure allows to disassemble the closing element 3 during the period of its installation (for example to seal the frame), prevents removing the closure element after the installation and commissioning of the platelet, allows the platelet to be integrated into the frame from the beginning of a unmissable way, and makes the platelet inaccessible and unbreakable after commissioning.

In the embodiment of Figures 7 to 9, the closure element 3 is approximately identical to that of the shapes of realization of figures 1 to 6: for this reason its description; the same applies to most of framework 1; in effect as is mainly the shape of platelet 4 of the Figures 7 to 9 which is different from Figures 1 to 6, the differences in framework 1 mainly refer to the means intended to retain platelet 4 and to support it; thus now only platelet 4 and said means will be described; the elements of the second embodiment corresponding to elements of the first embodiment, carry the same reference numbers in the drawings.

The platelet 4 comprises in its central part a body 40 presenting a generally flat shape; the same as the platelet of the embodiment of figures 1 to 6, its part upper limb will be folded approximately at an angle straight towards the outer wall 11 in a very long length short, the two lateral edges 41 of said retracted outer part they carry two respective cylindrical stumps 42 for retention of the plate against the outer wall 11; in addition, his share of lower limb is folded at right angles in the direction opposite the upper limb part, so as to form a leg 43 perpendicular to the body 40 in addition, the face of the stop plate 4, which is adapted to be placed in front of the outer wall 11, has two guiding contacts 44 that extend laterally respectively from side to side of the side edges of the platelet; each of these lateral edges also carries a just above contact level 44, a ratchet notch 45 inclined ramp, which stands out with respect to the edge. The platelet 4 further comprises a stud 46 of very elastomeric material understandable whose limb has a conical general shape, fixed approximately in the center of the body 40 and so as to stand out with the outer wall 11.

To retain the stop plate 4 against the outer wall 11, each of the side walls 13 of the socket comprises a slot 137 that extends in one direction approximately vertical in the socket against the outer wall 11 which flows out of frame 1 in correspondence with the hole 100 of the base of the socket 10, adapted to receive or accommodate, sliding by means of a stump 42 and a contact 44 for guiding of the platelet; the outer wall 11 also comprises a groove 139 which guides the slide in the vertical direction with respect to the free end of the pin 46 at the same time as the platelet; in addition, the edge 140 of the side of the inner wall 12, of each of the slots 137 comprises notches 141 of inclined ramp to accommodate the ratchet notch 45 corresponding to the platelet 4 when she herself is in the waiting position and when she is in anti-theft protection position, and thus withstand it when It is in one or the other of these two positions.

With the stumps 42 of the stop plate 4 inserted into the approximately vertical slot 137 by its lower extremity corresponding to the base hole 100, for move from the low standby position (figure 7) in which the ratchet notches 45 are attached to the notches corresponding, in the high position of protection against theft (figure 8), simply slide the plate up sliding the inclined ramps of the notches 45 along of the inclined ramps of the notches 141 and compressing the elastomeric block 46 in order to allow the release of notches of the notches, and then drag the platelet 4 up to the burglary protection position in which the notches 45 are again coupled with the notches 141; during this operation, the closing element 3 is in its stable opening position at approximately 90 degrees, either in the total opening position at 110 degrees.

With this embodiment, it is possible to return of the theft protection position in which it is impossible remove the closure element 3, to the waiting position in which such removal is feasible, but this operation is uncomfortable. For make it impossible, just drown or embed the bottom of the socket in a sealing material such as a sealing mortar, to effects of preventing all movement of the stop plate 4 towards down.

In the embodiment of figures 10 a 16, the reciprocal articulation means of the closure element 3 and of frame 1, are respectively two pins 30, of the element of closure and two alveoli 10 of the frame; the organs of these forms of realization corresponding to organs already described in the ways of preceding embodiment, carry the same numbers of reference.

The cells 10 are limited by a wall exterior 11, and in its upper part, by an upper wall 12 of the framework as previously described; instead, as both alveoli are separated from each other by a partition that extends in T from the outer wall 11 towards the inner wall 12, are bounded laterally on one side by a wall 13 as above while on the opposite side, the side wall of the upper part of the alveoli is this partition 15 in the form of T.

Support surfaces belonging to the frame 1 are constituted, in each of the alveoli, by surfaces flat top 113, side walls 11, inclined downward inward direction of frame 1, prolonged in the same direction by curved surfaces, 114, in turn prolonged by horizontal surfaces 115.

It can be seen that the partition 15 in T is not extends to the bottom of the alveoli 10, so that the they are in communication with each other under the bridge of material constituted by partition 15; can also be seen in each of the alveoli 10, facing the projecting region in the direction towards the side wall 13, of the longest part of the partition 15 in T, that the outer wall 11 descends in one direction approximately vertical to the base of frame 1, and that bearing surfaces 113,114, 115, for pin 30 are interrupted laterally in front of the free extremity of said region outstanding; As a result, both cells 10 pass through the frame from side to side and end at the base of it in your region extending between the outer wall 11 and the vertical of the outstanding region, laterally from the widest part of the partition 15, by means of respective holes 100, and that both holes 100 are in communication with each other under partition 15 in T.

The spikes 30, at their free end comprise at its tip a head 302 that has an outer shape in shape of cylinder extending in an arc of circumference of the order of 180 degrees. The cylindrical surfaces of the heads they constitute the support surfaces of the spikes.

Each of the articulation heads 302 presents, in the region of its free limb separated by a space in the wall 11 of the socket facing each other when the closure element 3 is in its closed position, a ram side 303 protruding from the side face of the head of articulation 302 that is in front of partition 15 in T.

Rams 303 have a surface upper portion of cylinder that extends in this case in a circumference arc of approximately 180 degrees. Is it so positioned so that when the closing element is in their closed position, they are below the projection formed by an edge region 151 of the widest part of partition 15 in T the which constitutes, as already written, a border wall of each of the alveoli 10, which edge region 151 extends in projection or cantilever towards the outer wall 11.

The butt opening position of the closure 3 (not shown), in which the closure element forms an angle of approximately 120 degrees with respect to the frame, is defined by the location and inclination of the surfaces inclined upper 113 against which the upper faces of part 301 of pins 30, as well as by the support of the pins on the bearing surfaces 115 and of the Rams against the base of the partition wall 15 facing the outer wall 11.

With such a structure, pin 30 of the closure element 3 can be introduced into socket 10 of the frame 1 when the closing element 3 is in a position approximately vertical (figure 10), and the closure element can be then brought to its opening position at the top, to its closing position (figure 11), or be separated from the frame in a approximately vertical position.

To suppress this last possibility, in the space of the socket 10 separating, when the closing element 3, is in its closed position, the free end of the spike 30, of the outer wall 11, a stop plate 4 is housed for the head (figures 13 and 14) intended to be positioned in approximately vertical shape in the socket in the vicinity of the outer wall 11 (figures 15 and 16).

Said platelet comprises in its central part a body 40 presenting a generally flat shape; the top and the lower part of the platelet 4 extends in one direction approximately at right angles towards the inner wall 12; said platelet has a recess 47 that extends in the entire length of the top that extends in right angle with respect to the body 40 and over the body portion which is in the vicinity of said upper part, in such a way which define two lateral branches 48 on each side of the recess 47; the lower limb part that extends approximately at right angles shape, in the same way as above, a leg 43; it is preferable that leg 43 is more narrow that the body 40 and that the separation between the branches lateral 48; for this purpose the body 40 can present for example a form of isosceles trapezoid.

To be able to position with relative accuracy the plate 4 in the vicinity of the outer wall 11 and support it when in the position of protection against theft, the inclined flat upper support surfaces 113, for heads 302 of spikes 30 and spurs 303, and base 481 of a heel of the upper part of the lateral branches 48 of the platelet protruding with respect to body 40, have the same inclination; similarly, the edge edge of alveolus 151 that protrudes with respect to spurs 303, and the base of the free end 482, from the top of the lateral branches 48 of the platelet, they have the same inclination; also the length of this upper part of the branches 48 is such that it can fit between said support surface 113 and this edge edge outstanding 151.

Plate 4 is positioned from below the frame 1 through holes 100 in communication with the base thereof, while the closing element 3, is in opening position, raising platelet 4 in the socket for the purpose of introducing its branches 48 between the spike 30 and the outer wall 11 and then swinging the base of the body 40 in the direction from the wall 11. It is also possible to remove the plate 4, but this operation is uncomfortable all the more for those who don't know the layout Of the device; This results in a certain inviolability. For definitely prevent the removal of platelet 4 just fill the bottom of the socket 10 with a sealing material such that the platelet can no longer be removed below the frame, for example drowning or embedding the leg 43 of the platelet in said sealing material, which can be a cement concrete.

Of course the invention is not limited to newly described and depicted embodiments, and it is possible conceive of other embodiments of the invention without leaving The scope of it.

Claims (10)

1. Record provided with an articulated cover, intended to cover, or selectively access an excavation carried out on the ground, comprising a frame (1) that delimits access (2) to the excavation and a cover (3) adapted to be able to be moved in a movement that is approximately pivoting about an approximately horizontal axis, which rests in the frame between a closed position in which it approximately covers the access and an opening position to the stop in which substantially releases said access , the lid (3) and the frame (1) being provided with reciprocal articulation means constituted by at least one pin (30) of the lid and at least one socket (10) of the frame, which have reciprocal support surfaces to cooperate each other during said approximately pivotal movement, the spike presenting in the region of its free end separated in a space with respect to the wall (11) of the socket facing each other when the cover is It is in the closed position, an articulation head (302) comprising at least one side ram (303) that is housed, when the cover (3) rests on the frame (1), at least partially under at least an edge of the alveolus that is in projection and which in turn extends in the direction towards said wall (11) of the alveolus at a certain distance from it, a register characterized in that it comprises, housed in said space a stop plate (4 ) for the articulation head (302), which rests on at least one support surface that is part of the frame (1), which restricts the possibility of displacement of the cover (3) in the direction towards said wall (1) from the socket (10) to a run or path that is insufficient for the ram (303) to stop being at least partially protruding from said edge of the socket, and the socket (10) flows out of the frame ( 1), by its base, in such a way that said space is in communication with the outside of the frame through a hole (100) that allows the passage of the plate (4) for positioning in said space. 2. Registration according to claim 1, characterized in that the cover (3) comprises a pin (30) having two lateral spurs (303), and the frame (1) comprises an socket whose side walls (13) are provided with surfaces of support (131, 132) for the pin (30) that delimit an edge of the alveolus that is in projection and that extends towards the wall (11) of the alveolus that faces the free end of the spike (30 ) when the lid is in the closed position. 3. Registration according to any one of claims 1 and 2, characterized in that the cover (3) comprises a pin having two lateral spurs (303), and the frame (1) comprises an socket (10) whose side walls (13) they are provided with at least one support surface (133) for the pin (30) that delimits an edge of the socket that is in projection and extends in the direction towards an inner wall (12) of the socket whose upper part serves as cover seat (3). 4. Registration according to any one of claims 1 and 3, characterized in that the socket comprises side walls (13) having respective retaining grooves (137) extending against said wall (11) of the socket facing the end free of the pin (30) when the cover is in the closed position, and the plate (4) has side stumps (42) mounted so as to be able to slide in said grooves. 5. Registration according to claim 4, characterized in that the side walls (13) have respective insertion slots (138) for inserting the stumps (42) into the retention grooves (137), one of whose ends flows into said retention slot (137) and whose opposite extremity ends at a support surface (135) of the socket (10) for the spike (30), a lower edge of the platelet (4) being adapted to rest on an inner surface of a drip or gutter (112) carried by at least one wall (11) of the socket. 6. Registration according to claim 4, characterized in that the side walls (13) are provided with respective grooves (137) comprising notches (141) adapted to cooperate by ratchet effect with notches (45) carried by the side edges of the platelet (4), and the platelet (4) also comprises a pin (46) of a compressible material that allows the platelet to slide between a waiting position and a theft protection position. 7. Registration according to claim 1, characterized in that the cover (3) comprises two pins (30) each of which has at least one lateral spur (303), and the frame (1) comprises two alveoli (10) which they have an outer wall (11) and supporting surfaces (113, 114, 115) for a respective spike, both of which are separated from each other by means of a T-partition (15) extending from said inner wall (11) of the frame in direction towards an inner wall (12) of the frame, presenting a widened part of the T-partition, edge regions (151) that extend towards the outer wall (11) and which, when the cover is in the closed position , protrude partially with respect to the spurs (303) of the spike (30). 8. Registration according to claim 7, characterized in that the plate (4) has two lateral branches (48) adapted to rest on support surfaces that are part of the frame (1), said support surfaces being constituted by the upper part of surfaces upper support (113) integrated in each of the alveoli (10) for the support of respective spikes (30) and by a edge of the edge regions (151) protruding above the alveoli (10). 9. Registration according to any one of claims 6 and 8, characterized in that the plate (4) has a retracted leg (43) on one of its ends. 10. Registration according to any one of claims 1 to 9, characterized in that the lower part of the socket (10) is trimmed with a sealing material.