Guidance systems for positioning gravestones on a burial vault.

Abstract

The invention relates to a guidance system (1) for positioning a slab (42) on an upper end (41A) of a burial vault (41) of a funerary monument (4), said system comprising at least four guidance devices (2) each positioned at a distance from the others such that said devices surround the slab (42), each guidance device (2) comprising at least: a fixing end (22) comprising at least one fixing means (22A) configured to allow the temporary mounting of the guidance device (2) on the upper end (41A) of the vault (41), and a guidance end (21) with a guide element (21A) configured to be in contact with the slab (42) when said device is in the mounting position on the vault (41). Abstract figure: Figure 5

Description

Description Title of the invention: Guidance systems for the positioning of funeral slabs on a vault. Technical field. The present invention relates to guidance systems for positioning a slab on a funerary monument vault. The invention also relates to methods for moving a funerary monument slab. The invention relates to the technical field of handling devices, in particular devices for moving or constructing funerary monuments. The invention also relates to the technical field of funerary monuments, as well as their movement or installation. State of the art. Currently, the installation of funerary monuments is often a costly and laborious process. It usually requires the use of heavy equipment, such as cranes and lifting devices, especially when the monuments are made of dense materials such as granite or marble. Furthermore, once mounted, the monument is usually permanently fixed in its location, making it difficult to move it later for reasons such as reorganization of the burial site, maintenance work or compliance with new regulatory standards. This is why new devices that facilitate the assembly or movement of funeral monuments are particularly sought after. Another problem arises during burial. Indeed, it is sometimes complicated and time-consuming to lift a grave slab during or after a burial, as is its subsequent repositioning. Currently, no effective system exists that allows the slab to be replaced identically, without requiring numerous adjustments from funeral service providers and without the risk of damaging the monument. In addition, moving a slab, due to its size and weight, is not without risks for service providers. The time spent moving the slab considerably increases the duration of funeral services, making them particularly expensive. This cost is also increased because it requires the intervention of several people to carry out the burial. Published patent application FR 2 463 244 A1 discloses a system for lifting vault slabs, comprising a lifting beam supported by a frame via a cable. This lifting beam is configured to be mounted on the slab, the slab being moved vertically by the cable from a mounting position to a raised position located at a distance from the vault. However, the slab remains in position above the monument, which can pose a risk to service providers. In addition, the system must remain in place so that the slab can be easily repositioned, which complicates burial because the frame hinders the replacement of the coffin in the vault. Published patent application AT 412 297 B discloses a funerary monument that can be quickly assembled and disassembled, with a mounting frame to facilitate this assembly. The frame has a rectangular shape and is made up of several profiles that can be connected to each other at their ends. The size of the frame can be adapted to the size of the slab, by adding or removing profiles. However, this adaptation is limited. The invention aims to overcome at least one of the drawbacks of the aforementioned state of the art. More particularly, all the guidance systems aim to facilitate and simplify the positioning or repositioning of a slab on a funerary monument vault, regardless of the dimensions of the slab relative to the dimensions of the vault. The invention also aims to facilitate the transport, movement and placement of a slab on a funerary monument vault. Presentation of the invention. The invention relates to systems for guiding funerary elements. The guidance systems are intended to facilitate the installation and reinstallation of funerary elements, such as slabs, doors, steles, etc. on the funerary monument after their removal, by keeping in mind their position before their movement. More specifically, the guidance system is used for positioning or repositioning a funerary slab on a vault. These guidance systems are also specifically designed not to hinder funeral service providers during burial, also called inhumation. The solution proposed by the invention is a guidance system for positioning a slab on an upper end of a funerary monument vault, said system comprising at least four guidance devices each positioned at a distance from each other so that said devices surround the slab, each guidance device comprising at least: a fixing end comprising at least one fixing means configured to allow the transient mounting of the guidance device on the upper end of the vault, and a guidance end with a guidance element configured to be in contact with the slab when said device is in the mounting position on the vault. The guidance system according to the invention comprises fixing means which are temporarily fixed to the funerary monument and which make it possible to precisely define the positioning of the slab on the vault, before its possible movement. By transiently, we mean that the fixing means is fixed for a short period on the monument, and can, subsequently, be moved randomly or reused at will. It is generally mounted on the funerary monument for a relatively short period, so as to delimit the location of the slab before its movement and thus facilitate its subsequent repositioning. The duration of fixation of the guiding devices on the monument can be a few hours, or even a few days, the time to allow the installation or replacement of the slab on the vault. Other advantageous features of the system that is the subject of the invention are listed below. Each of these features can be considered alone or in combination with the remarkable features defined above. Each of these features contributes, where appropriate, to the resolution of specific technical problems defined further in the description and in which the remarkable features defined above do not necessarily contribute. The latter may be the subject, where appropriate, of one or more divisional patent applications. According to a preferred embodiment, the fixing means of the guide device is a suction cup configured to allow the temporary fixing of said device on the vault, and the guide element of the guide device is a rod comprising: a first vertical portion extending from the suction cup and along a main axis parallel to a vertical plane of the funerary monument, and a second lateral portion extending from said first portion and along an angle of between 15° and 40° relative to the main axis of the first portion, the second portion being oriented towards the outside of the funerary monument so as to be able to progressively orient the positioning of the slab on the vault when the guide device is in the mounting position on said vault. According to a first embodiment, the rod of the guide device is positioned perpendicular to the longitudinal axis of attachment of the suction cup to the vault. The rod is continuous with the suction cup. According to a second embodiment variant, the rod is positioned parallel to the longitudinal axis of attachment of the suction cup to the vault. As in the aforementioned variant, the rod comprises a first vertical portion which extends along a main axis parallel to the vertical plane of the funerary monument, and a second lateral portion which extends from said first portion and at an angle of between 15° and 40° relative to the main axis of the first portion. In this variant, the rod is attached to the suction cup by means of a connecting element, the main axis of said first portion extending perpendicular to the connecting element. The invention also relates to a guidance system for positioning a slab on an upper end of a funerary monument vault, said slab comprising lateral borders which extend beyond the underlying edges of the vault, said system comprising at least four guidance devices configured to be transiently mounted on the lateral borders of the slab, each guidance device comprising: a main portion configured to at least partially surround the lateral border of the slab, adjustment elements positioned on the periphery of the main portion of the guidance device, said elements being configured to adapt the fixing of the guidance device on the lateral border according to the thickness and / or the size of said border, and a means of continuous fixing of the main portion of the device and configured to be fixed on an upper face of the slab. The fixing method is advantageously a suction cup. The lateral edges of the slab are known thanks to the positioning of the various guiding devices. The adjustment elements allow in particular to determine the thickness and length of the lateral edges in relation to the underlying vault. Advantageously, the guidance system comprises at least two guidance devices on each side of the slab, therefore at least eight guidance devices. Preferably, the guidance devices are connected together by a connecting bar so as to form a support. More preferably, at least three guidance devices are connected together by a connecting bar. Preferably, each suction cup comprises an orifice from which the air intake is made. At least two suction cups can be connected via a pipe which will create a vacuum in said suction cups, thus allowing them to be fixed. In a particularly preferred manner, all the suction cups of the guide devices can be connected via air vacuum pipes, so as to be able to empty or reinject air into said suction cups simultaneously using a single control console. The invention also relates to a guidance system for positioning a slab on an upper end of a funerary monument vault, said system comprising: a frame, and at least four guidance devices configured to be mounted on the frame and positioned, each, at a distance from each other so as to surround the slab, the guidance system being according to the invention, the fixing ends and the guide ends of the guidance devices being mounted separately on the frame, the mounting being carried out by a mounting element for each guide end, or by a mounting device for each fixing end. Such a guidance system has the advantage, compared to the guidance devices previously described, of being installed more quickly on the vault because the The fixing means are mounted directly on the frame. As before, the use of this guidance system makes it easier to position or reposition the slab on the vault, while simplifying it and increasing safety for funeral service providers. According to an advantageous embodiment of the invention, the guide element of each guide end is fixed to the frame by the mounting element, the guide element comprising: a first lower vertical portion configured to be positioned, in use, against a lateral face of the slab, and a second upper lateral portion extending from the first portion at an angle so as to optimize the guiding of the slab, the second lateral portion being oriented, in use, towards the outside of the funerary monument. The first vertical portion of the guide element allows the element to be placed against the slab, which allows the exact positioning of the slab to be determined before its removal. This allows the frame to be perfectly adjusted to the dimensions of the slab. This placement is important so that the repositioning of the slab on the vault is carried out accurately. The presence of the angle between the first vertical portion and the second lateral portion allows for a smooth repositioning of the slab on the vault. This angle is preferably an acute angle between 15° and 60°, and even more preferably an angle between 30° and 40°. According to an advantageous embodiment of the invention, each mounting element comprises: a vertical frame fixed to the chassis by a first fixing element, and a horizontal frame fixed to the vertical frame by a second fixing element and which extends horizontally relative to the vertical frame, with an internal end of the horizontal frame fixed to the guide element. The mounting element allows the guide device to be fixed to the chassis, each mounting element being able to be moved therein as required. Advantageously, the first fixing element may consist of a ring configured to be mounted on the frame and in which the vertical reinforcement can be moved. This first element also comprises a clamping part such as a screw, a butterfly screw or a butterfly nut, the tightening of which makes it possible to lock the vertical reinforcement at the desired height, for example a height adapted to the height of the adjacent slab. Advantageously, the second fixing element may also be constituted by a ring configured to be mounted on the vertical frame, and more specifically, on an upper end of said frame. The horizontal frame may be moved in this ring, the second element comprising a clamping part such as a screw, a butterfly screw or a butterfly nut which will block the horizontal frame in the ring. Thus, the guide element mounted on the horizontal frame can be positioned as close as possible to the slab, allowing very precise adaptation of its location. The term "internal end" is defined according to the positioning of the guidance system on the funerary monument, therefore as the end of the horizontal reinforcement positioned closest to the slab. According to an advantageous embodiment of the invention, the at least one transient fixing means of each fixing end is mounted on the frame by the mounting device and is configured to temporarily hold the frame in position around the slab. The temporary fixing allows the frame to be moved easily and the fixing means to be reused. This also limits damage to the funerary monument. According to an advantageous embodiment of the invention, each mounting device is configured to be able to pivot the corresponding fixing means around the frame, so that a contact face of said means is in contact with an upper wall or a side wall of the upper end of the vault. The mounting of each fastening means to the frame by a mounting device allows it to be positioned as required against one of the walls of the upper end of the vault, so as to adapt the dimensions of the frame to the dimensions of the slab. These fastening means may be, for example, adhesives such as adhesive hooks, double-sided adhesive strips or, particularly preferably, suction cups. The suction cups have the advantage of being easily reusable and each comprise a face for contact with the vault. Thanks to the mounting device, the contact face of the suction cup can be oriented vertically along an axis parallel to the main axis of the first vertical portion of the guide element, so as to be stuck against the side wall of the vault after removal of the air by a compressor. This is particularly advantageous if the slab has dimensions larger than the dimensions of the vault. The contact face therefore extends along the longitudinal axis of attachment of the suction cup. Alternatively, the contact face may be oriented horizontally along an axis perpendicular to the main axis of the first vertical portion of the guide element, so as to be glued against the upper wall of the vault. This is particularly advantageous when the slab has dimensions smaller than the dimensions of the vault. Advantageously, the mounting device comprises a rigid part configured to be fixed directly to the fixing means, and from which an upper part extends. This upper part preferably has a section U-shaped crossbar configured to be mounted on the chassis and which is closed by a closing element such as a screw or a bolt, for example. This element serves to hold the fixing means in position on the chassis. Such a device is easy to install and use, the positioning of the fixing means can therefore be adapted as required. Advantageously, when the fixing means is a suction cup, each suction cup can be connected to a compressor by one or more pipes such as air vacuum pipes, said pipes serving to inject or remove air from the suction cup so as to allow its temporary fixing to the vault. Each suction cup can be individually connected to the compressor by a hose. Their individual control makes it easier to replace them in the event of a failure. These exchanges can also be controlled by solenoid valves or manual valves positioned on each suction cup. Alternatively, all the suction cups are connected to each other by pipes. These pipes form a closed circuit that is connected to the compressor by a single air inlet and outlet so that air can be injected or removed from all the suction cups simultaneously. This makes it easier to install and use the suction cups, as well as to start them up. When the suction cups are all connected to the same circuit, the operation of the said suction cups is easier to implement because all the suction cups are activated at the same time. This also saves time. Solenoid valves or manual valves can also be used in this variant to control air exchange. According to an advantageous embodiment of the invention, the frame further comprises: four longitudinal profiles configured to extend, each, along one of the lateral faces of the slab, and four angular profiles configured to operate a dynamic coupling with the longitudinal profiles so as to allow adaptation of the dimensions of the frame to the dimensions of the slab. Dynamic coupling allows for precise adaptation of the frame dimensions to the dimensions of the slab to be positioned or repositioned on the vault. The term "dynamic coupling" is used to describe any interaction between the angular profiles and the longitudinal profiles, allowing them to move relative to each other to vary the length of each side of the frame. This variation in length is precise. The longitudinal and angular profiles are easy to manufacture, and adapting the frame dimensions to the slab dimensions is also easy to implement. Advantageously, the angular profiles consist of two beams fixed to each other by methods known to those skilled in the art, such as welding or brazing. Preferably, the two beams are fixed perpendicularly together, therefore at an angle of approximately 90°, with a variation of plus or minus 5° depending on the manufacturing hazards of the profile. This angle is particularly advantageous in order to obtain the perpendicular shape of the frame which facilitates its dimensional changes. According to an advantageous embodiment of the invention, the longitudinal profiles are hollow and configured to each receive one of the ends of the angular profiles so as to allow the linear sliding of the angular profiles in the longitudinal profiles, the temporary blocking of an angular profile relative to the corresponding longitudinal profile being achieved by one or more fixing parts. The longitudinal profiles forming the frame may be long or short. Preferably, the frame has a substantially parallelepiped shape consisting of two long longitudinal profiles and two short profiles. More specifically, the two ends of each angular profile may be inserted into one long profile and one short profile. Alternatively, said ends may be inserted into two long longitudinal profiles or into two short longitudinal profiles. The term "linear sliding" means that each angular profile is configured to move within the corresponding longitudinal profile. The term "temporary locking" means that the fixing part(s) lock the angular profile in position in the corresponding longitudinal profile for a limited time, allowing the length of the frame to be fixed. These parts can therefore be moved or removed, allowing the profiles to slide linearly again and the sides of the frame to extend or retract. This makes adjusting the dimensions of the frame easy to implement and perform. Advantageously, the fixing parts are easy to manufacture and implement, their use allowing the chassis to maintain the desired dimensions. Particularly advantageously, each longitudinal profile may have one or more holes into which the fixing piece(s) can be inserted. Several fixing pieces may be used to improve the holding of the frame in position. Advantageously, the fixing pieces are also made of metallic materials, such as stainless steel or aluminum. According to an advantageous embodiment of the invention, the guide devices are mounted on the longitudinal profiles of the chassis. The positioning of the guide devices on the longitudinal profiles of the frame facilitates the assembly of the guide system. In fact, the positioning of said devices on the angular profiles is difficult to implement due to the introduction of said profiles into the longitudinal profiles. Their positioning on the longitudinal profiles therefore reduces the number of manipulations required for mounting the frame. However, this assembly may not be fixed. Indeed, depending on the size of the slab and the desired frame, it may be advantageous to adapt the positioning of the fixing means and / or the guide elements on the frame. The rotation of the fixing means around the profile on which it is mounted also makes it possible to adapt the dimensions of the frame to variable dimensions of slabs, whether these dimensions are greater or less than the dimensions of the vault. Advantageously, the fixing means are positioned at a distance from each other in order to ensure better balance and stability of the frame, in particular during use of the guidance system on the vault. Advantageously, the remote positioning of the guide ends allows for better balance when repositioning the slab on the vault, this repositioning being simple and effective. The fixing and guide ends of the guide devices can be designed to have a varied positioning on each profile, allowing them to be added or removed as required. Alternatively, some frames can be designed to have fixing and guide ends fixed to the profiles, which would limit the number of manipulations required during installation of the system. Advantageously, the frame may comprise a device for determining the center of the slab, in order to facilitate the positioning of a lifting beam and / or a fixing means for lifting said slab. This lifting beam may comprise a suction cup, the suction cup having to be fixed to the center of the slab in order to prevent it from tilting. The device for determining the center of the slab may be composed, for example, of laser devices configured to be mounted in the middle of each longitudinal profile, the intersection of said lasers, once the devices are activated, being able to show the center of the slab in a simple, rapid and efficient manner. Other alternative methods may also be envisaged. The invention also relates to a method for moving a slab positioned on a funerary monument vault, said method comprising the following steps. A first step of positioning and fixing a guide system according to the invention on an upper end of the vault or on lateral edges of the slab, so that each guide device precisely delimits the previous positioning of said slab, and so that said system surrounds said slab. A second step of positioning a spreader bar on the slab, so that one or more means of fixing the spreader bar are fixed to an external face of the slab. A third stage of lifting and then moving the slab, the lifting beam being configured to be temporarily caught by a lifting device so as to allow the opening of the funerary monument. A fourth step of repositioning the slab on the vault, said slab being placed back in a similar way to its original position thanks to automatic recentering carried out by the guidance devices. And finally, a final step of removing the guidance system and the spreader bar from the funerary monument, with possible sealing of said monument. This process reduces the handling time of funerary monument slabs, thanks to the use of the aforementioned systems. This process notably reduces the time required to remove and then replace the slabs after opening the monument. The invention also relates to a method of guiding the movement of a slab positioned on a funerary monument vault, said method comprising: A step of positioning a guidance system according to the invention on the upper end of the vault so that the guidance system delimits the anterior positioning of the slab. A step of fixing the fixing means on the vault. A step of removing the slab carried out by a lifting beam and / or a fixing means. A step of repositioning the slab on the vault in its original location thanks to automatic recentering carried out by the guiding elements of the guiding devices. And finally a step of removing the lifting beam and / or the means of fixing the slab, then removing the guidance system from the vault. This method is simple to implement, since the use of the guidance system simplifies the repositioning of a slab on a funerary monument vault. It also saves considerable time when moving and replacing a slab on a vault. According to an advantageous embodiment of the invention, at the step of positioning the guidance system: the first vertical portions of the guidance elements are positioned against the lateral faces of the slab, and the fixing means are positioned on the upper end of the vault. This ensures that the frame is correctly positioned against the slab, making it easier to reposition it. The orientation of the fixing means also improves the correct positioning of the frame. According to an advantageous embodiment of the invention, the step of repositioning the slab on the vault may comprise a sub-step of sealing the slab on the vault. Sealing is not an essential step in the installation of a vault but helps prevent water infiltration into the vault, which can cause significant damage. According to an advantageous embodiment of the invention, during the step of positioning the guidance system on the vault: an adjustment of the dimensions of the frame according to the dimensions of the slab is carried out by linear sliding of the angular profiles in the corresponding longitudinal profiles. Adapting the dimensions of the frame makes it easier to position it correctly on the vault and also facilitates the subsequent repositioning of the slab. According to an advantageous embodiment of the invention, during the step of positioning the guidance system on the vault, precise adjustment in height and width of the guidance elements according to the height and width of the slab is carried out by adjusting the vertical and horizontal reinforcements of the guidance ends. A more subtle adjustment of the guide element frames allows the positioning of said elements against the side faces of the slab, thus improving the precision of the positioning of the frame to ensure precise repositioning of the slab on the vault. Advantageously, the step of fixing the fixing means to the vault is carried out by activating a compressor and removing the air located between the contact faces of said means and the upper and / or side walls of the vault. This step is easy to carry out and implement, the tools used being known to those skilled in the art. Advantageously, the step of removing the slab consists of positioning a lifting beam and / or a fixing means on the slab, then lifting and moving said slab. Generally speaking, the various systems may have insulating elements, such as foam, elastomer or other material known to those skilled in the art, used to attenuate the impact caused by said systems on the funerary elements. Brief description of the figures. Other advantages and characteristics of the invention will appear more clearly on reading the description of a preferred embodiment which follows, with reference to the appended drawings, produced as indicative and non-limiting examples and in which: [Fig.1] is a perspective view of a funerary monument with a guidance system according to a first variant embodiment of the invention. [Fig.2] is a side view of a funerary monument with the system of guidance of [Fig.1]. [Fig.3] is a side view of a funerary monument with a system of guidance according to a second variant embodiment of the invention, for a cantilevered funerary monument slab. [Fig.4] is a side view of a guidance device for a system of guidance according to a third variant embodiment of the invention, for a cantilevered funerary monument slab. [Fig.5] shows a perspective view of a guidance system according to a fourth variant embodiment of the invention in use, showing a slab repositioned on a vault by said system. [Fig.6] shows a perspective view of the guidance system of [Fig.5]. Description of the embodiments. As used herein, and unless otherwise indicated, the use of the ordinal adjectives "first", "second", etc., to describe an object simply indicates that different occurrences of similar objects are mentioned and does not imply that the objects so described must be in a given sequence, whether in time, space, classification, etc. "X and / or Y" means: X alone or Y alone or X+Y. Generally speaking, it will be appreciated that in the various accompanying drawings, the objects are arbitrarily drawn to facilitate their reading. By "prior" is meant, in the case of the positioning of the slab on the vault, the positioning of said slab before the use of the systems according to the invention. The terms "upper" and "lower" are defined according to their position, in use, on the funerary monument and on the guidance system mounted on this monument. The terms "vertical" and "horizontal" are defined when the guidance system is in the mounted position on the funerary monument. The terms "outer" and "inner" qualify components of the guidance systems according to their orientation relative to the funerary monument. Thus, an outward orientation indicates that the component extends away from the monument. An inner end is therefore directed towards this monument. The various systems described in this application are particularly suitable for use in the funeral industry, in particular for moving funeral elements. Such elements may be, for example, slabs positioned on a vault. Figures 1 and 2 show two views of a guidance system according to a first variant embodiment of the invention. A guidance system 1 according to the invention is particularly suitable for assisting in the movement of elements of a funerary monument 4. Such a monument comprises, in the present application, a vault 41 with an upper end 41A supporting a slab 42, said slab being configured to close said monument. Generally, a stele 43 is also positioned at one end of said monument and is configured to be able to support epitaphs. Generally, the funerary monument 4 has a substantially parallelepiped shape. Thus, the monument 4 extends along a vertical plane (z) orienting said monument in the direction of height, and along a main longitudinal axis (y) orienting the monument 4 in the direction of length. The stele 43 is then preferentially positioned at one of the ends of the funerary monument 4 along the main longitudinal axis (y). The guidance system 1 according to the invention makes it possible to determine the exact positioning of the slab 42 before its removal from the monument 4, thus its repositioning is carried out in a simple and easy manner, since the guidance system 1 makes it possible to delimit and keep in memory the previous positioning of the slab 42. This system 1 comprises several guidance devices 2, preferably at least four, more preferably at least eight devices, said devices each being positioned at a distance from each other so as to surround the slab 42 of the funerary monument 4, which will allow optimal guidance of said slab when it is repositioned. Each guide device 2 comprises a fixing end 22 which allows it to be fixed to the upper end 41A of the vault 41. This fixing is temporary, that is to say that the fixing end 22 can be mounted on the vault 41 for a limited duration, which makes it possible to move the device as needed, and in particular for later use. The fixing end 22 of said device comprises at least one fixing means 22A which does not require installation which could damage the monument, be complex or noisy. Thus, a particularly preferred fixing means 22A for this guide device 2 is a suction cup, which can be easily fixed and then removed from the vault 41. Advantageously, the suction cup can be operated manually, or using one or more control consoles, so as to remove the air from the suction cups and allow them to be fixed to the slab 42. The suction cups of the guide devices 2 can also be connected together by one or more air vacuum pipes, which can therefore simultaneously remove or reinject the air into all the suction cups. Each guide device 2 further comprises a guide end 21 with a guide element 21A configured to come into contact with the slab 42 and thus orient its repositioning when said device is in the mounting position on the funerary monument 4. Preferably, the guide element 21A is a rod comprising a first vertical portion 21 A.1 which extends from the suction cup and along a main axis (Ap) parallel to the vertical plane (z) of the funerary monument 4, and a second lateral portion 21 A.2 which extends from the first portion 21A.1 and at a distance from the fixing end 22 of said device. This second portion 21A.2 has an angle α relative to the main axis (Ap) of the first portion 21A.1 of between 15° and 40°, so that the second portion 21A.2 is oriented towards the outside of said monument 4 when the guide device 2 is in the mounting position on this monument 4. This angle α is important in order to be able to progressively orient the positioning of the slab 42 during its descent onto the vault 41. In this variant embodiment of the invention, the rod is positioned perpendicular to the longitudinal axis of attachment of the suction cup to the vault 41. The rod is thus in continuity with the suction cup. [Fig. 3] is a side view of a funerary monument on which is mounted a guidance system according to a second variant embodiment of the invention. In this variant, the guidance system 1 makes it possible, as previously, to define the exact positioning of the slab 42 before its removal from the monument, then to allow its replacement in a simple and easy manner. The guidance system 1 comprises guidance devices 2, preferably at least four devices, and more preferably at least eight. Said devices are positioned at a distance from each other so as to surround the slab 42 of the funerary monument 4, which will allow optimal guidance of said slab when it is replaced in position. As in the first variant, each guide device 2 comprises the fixing end 22 for fixing said device on the upper end 41A of the vault 41. The fixing end 22 comprises a fixing means 22A, which is, in a particularly preferred manner, a suction cup generally configured to be temporarily fixed on the vault 41, and can easily be positioned and then removed as required. As before, the suction cup can be operated manually or using one or more control consoles. The suction cups of each guide device 2 can be connected together by one or more air vacuum pipes, which can simultaneously inject or remove air from all the suction cups connected to the pipes. The emptying or filling of air can therefore be done by a single one or by several control consoles. Each guide device 2 further comprises the guide end 21 with a guide element 21A formed by the rod and performing the same function as in the first variant. This rod therefore comprises the first vertical portion 21A.1 which extends along a main axis (Ap) parallel to the vertical plane (2) of the funerary monument 4, and the second lateral portion 21A.2 which extends from said first portion of the rod and at an angle α of between 15° and 40° relative to the main axis (Ap) of the first portion 21A.1. This angle α allows the rod to perform the same function as mentioned above. More specifically, in this variant embodiment, the main axis (Ap) of the rod of the guide device 2 is oriented parallel to the longitudinal axis of attachment (Alg) of the suction cup on the upper end 41A of the vault 41. Thus, the suction cup is attached to the rod by means of a connecting element 33A, the main axis (Ap) of the first vertical portion 21A.1 of the rod extending perpendicularly to said element. Advantageously, the guide system 1 comprises at least two guide devices 2 on each side of the slab 42, said devices being connected together by a connecting bar 33 so as to form a support which can surround the vault 41. More preferably, at least three suction cups of three separate guide devices 2 are attached together by a connecting bar 33.Thus, the devices are connected together so as to form a frame around the slab 42, which allows said system to be better held on the vault 41. Advantageously, the connecting element 33A passes through the connecting bar 33, so that the guide element 21A is positioned on the outside of said bar, and the fixing end 22 is positioned on the inside of the bar, when the guide system 1 is in the mounting position. [Fig.4] shows a side view of a guide device according to a third variant embodiment of the invention, specific to cantilevered funerary monument slabs. In this variant, the slab 42 of the funerary monument 4 therefore has lateral borders 42B which extend outside the edges 41B of the underlying vault 41. Thus, the positioning of the guide devices 2 on the vault 41 will not always be possible to define the appropriate positioning of the slab 42 prior to its movement. This is why an alternative guidance system has been developed, this system being composed of several guidance devices 2. A single guidance device 2 according to this variant embodiment of the invention is shown in [Fig. 4], this device being in the form of a main portion 23 to which is attached a fixing means 22A such as a suction cup. As previously, these guidance devices 2 are designed to be temporarily fixed on the slab 42 of the monument, and are designed to cause the least possible damage. The main portion 23 of each guide device 2 is designed to surround, at least partially, the lateral edge 42B of the slab 42. The main portion 23 comprises an upper segment 23A forming a bracket configured to be mounted on the lateral edge 42B of the slab 42. This upper segment 23A is connected to the suction cup, itself fixed on an upper face 42C of the slab 42. The main portion 23 further comprises a lower segment 23B configured to be positioned under the lateral edge 42B of the slab 42. In a particularly advantageously, the lower segment 23B must be attached to the edge 41B of the upper end 41A of the vault 41, so that the latter can guide the correct positioning of the slab 42 during its repositioning. The guiding device 2 further comprises adjustment elements 24 which are positioned on the upper and lower segments (23A, 23B) of the main portion 23 so as to determine the size and / or thickness of the lateral edge 42B of the slab 42 and to tighten the guiding device 2 on said edge. The adjustment elements 24 positioned on the upper segment 23A of the main portion 23 serve to determine the width of the lateral edge 42B. The adjustment element 24 of the lower segment 23B, on the other hand, allows the thickness of the guiding device 2 to be adjusted according to the thickness of the slab 42. In order to access this adjustment element 24, an access orifice 23B.1 to the adjustment element 24 may be provided in the lower segment 23B. These adjustment elements 24 are known to those skilled in the art and are capable of performing the adjustment function, such as, for example, adjustment screws. Figures 5 and 6 show a fourth variant embodiment of the guidance system, and will be described together. More specifically, [Fig.5] shows the guidance system in use on a funerary monument, and [Fig.6] shows a perspective view of said system. In this variant, the guide system 1 comprises the guide devices 2 consisting of guide ends 21 and fixing ends 22. At least four guide devices 2 are preferably mounted on the system. Unlike the other embodiments of the invention, the guide and fixing ends (21, 22) of the guide devices 2 are configured to be separated from each other. It is further possible for each guide device 2 to comprise one or more guide ends 21, and one or more fixing ends 22. Thus, this new embodiment variant has the advantage of being able to effectively combine several of the previously described variants with a single system!. Indeed, this system | can more easily adapt its dimensions to the dimensions of the slab 42, whether these dimensions are greater than those of the vault 41 or not. The guidance system 1 also comprises a frame 3 formed by at least four longitudinal profiles 31 configured to extend, each, along one of the lateral faces 42A of the slab 42. The frame 3 further comprises four angular profiles 32 configured to operate a dynamic coupling with the longitudinal profiles 31, so as to be able to adapt the dimensions of the frame 3 to those of the slab 42. Thus, the frame 3 has a shape similar to the shape of the slab 42, this shape preferably being parallelepiped. Each longitudinal profile 31 is preferably hollow and configured to receive one of the ends of the angular profiles 32, so that the angular profiles 32 slide linearly in the longitudinal profiles 31, that is to say that the angular profiles 32 can be moved in the longitudinal profiles 31. This design is particularly preferred due to its simplicity of production and implementation. Alternatively, however, the angular profiles can be moved along the corresponding longitudinal profiles, by different mechanisms such as rails for example. The sliding of the angular profiles 32 in the longitudinal profiles 31 makes it possible to vary the dimensions of the frame 3, and thus to adapt it to the dimensions of the slab 42 around which said frame is to be mounted. Preferably, two lengths of longitudinal profiles 31 are used to form the frame 3, long longitudinal profiles and short longitudinal profiles. Advantageously, two long longitudinal profiles 31 are configured to extend laterally to the main longitudinal axis (y) of the monument 4, and two short longitudinal profiles 31 are configured to extend transversely to said axis so as to form a parallelepiped, preferably a rectangular parallelepiped. However, the frame 3 may, alternatively, comprise only long profiles or only short profiles. The angular profiles 32 consist of two beams fixed perpendicular to each other using methods known to those skilled in the art. Thus, the beams are preferably fixed at 90° to each other, with a variation of plus or minus 5° depending on the manufacturing hazards of said profiles. The angular profiles 32 are temporarily locked in the corresponding longitudinal profiles 31 by means of one or more fixing pieces 31A, which may take different forms. For example, one or more orifices may be provided along the longitudinal profiles 31, and more preferably at each of the ends of said profiles. Each orifice may accommodate a fixing piece 31A such as a bolt, a screw or even a butterfly screw. After tightening the piece, the end of the angular profile 32 slid into the longitudinal profile 31 is temporarily locked against the internal wall of the corresponding longitudinal profile 31. This is a temporary lock since a simple loosening of the fixing piece 31A would make it possible to remove, or move, the angular profile 32 inside the longitudinal profile 31. The positioning of the fixing piece 31A in one of the orifices depends on the desired size of the frame 3.Several fixing pieces 31A can also be used to hold the profiles (31, 32) together, in different holes. Alternatively, a single orifice may be provided at each end of the corresponding longitudinal profile 31. This orifice may, for example, be lengthened in order to allow a variation in the dimensions of the chassis 3. Preferably, the guide devices 2 are mounted on the longitudinal profiles 31 of the frame 3. More specifically, the fixing ends 22 of the different guide devices 2 are mounted separately on the frame 3, preferably at a distance from each other so as to balance the fixing of the frame 3 and to improve its holding in position during handling of the slab 42. The guide ends 21 are mounted separately on the frame 3 and preferably at a distance from each other in order to improve the repositioning of the slab 42. Each guide end 21 comprises a guide element 21A which serves for the proper repositioning of the slab 42 on the vault 41. Advantageously, this element is in the form of a rod, with a first lower vertical portion 21A.1 and a second upper lateral portion 21A.2. The first portion 21A.1 is configured, in use, to be positioned against a lateral face 42A of the slab 42, and allows the correct positioning of the frame 3 relative to the latter in order to facilitate its identical repositioning. The second lateral portion 21A.2 extends from the first portion 21A.1 at an angle α preferably between 15° and 60°. More preferably, this angle α is between 30° and 50° and serves to optimize the guidance of the slab 42 on the vault 41. The second portion 21A.2 is therefore oriented, in use, towards the outside of the funerary monument 4. Thus, the positioning of this portion 21A.2 allows a “gentle” replacement of the slab 42 on the vault 41: the descent of the slab 42 is carried out by “successive impacts” of the lateral faces 42A of the slab 42 and the second lateral portions 21A.2 of the guide elements 21A, then by a vertical descent of the slab 42 against the first vertical portions 21A.1 of said elements. The slab 42 is then repositioned in its original location. The guide end 21 further comprises a mounting element 21B allowing the guide element 21A to be fixed to the chassis 3. In a particularly preferred manner, this fixing is carried out on one of the longitudinal profiles 31 of said chassis. The mounting element 21B allows precise adjustment, in height and width, of the guide element 21A. This mounting element 21B comprises a vertical frame 21B.1 fixed to the chassis 3 by means of a first fixing element 21B.3. Preferably, the first fixing element 21B.3 comprises a ring fixing the vertical frame 21B.1 to the chassis 3. The frame 21B.1 is in the form of a bar configured to be moved vertically relative to the chassis 3 by means of the ring, this ring having a hole in which a clamping part is positioned. Actuation of the clamping part makes it possible to lock the reinforcement 21B.1 at the desired height. This positioning can therefore easily be modified, if necessary, depending on the height of the slab 42 to be moved. The ring forming part of the first fixing element 21B.3 can also be configured to be moved, for example using a system of holes, along the profile (31, 32) on which it is to be mounted. The mounting element 21B further comprises a horizontal reinforcement 21B.2 which is fixed to the vertical reinforcement 21B.1 by a second fixing element 21B.4. This reinforcement extends horizontally relative to the vertical reinforcement 21B.1, and is configured to extend transversely relative to the profile on which the mounting element 21B is mounted. The second fixing element 21B.4 attaching the vertical reinforcement 21B.1 to the horizontal reinforcement 21B.2 is preferably constituted by a ring fixed to the vertical reinforcement 21B.1, the ring receiving the horizontal reinforcement 21B.2. This reinforcement is in the form of a bar, and can be moved through the ring towards the inside or the outside of the frame 3. It is then temporarily fixed in the desired position using a clamping part, such as a screw or a bolt for example. Preferably, the clamping part is a butterfly screw.At an internal end of the horizontal reinforcement 21B.2 is fixed the guide element 21A, this element can therefore be positioned precisely against the slab 42 by actuation of the second fixing element 21B4. The guide devices 2 also comprise the fixing ends 22, each being mounted on the frame 3 by a mounting device 22B. Each fixing end 22 further comprises a temporary fixing means 22A configured to temporarily hold the frame 3 in position around the slab 42. Advantageously, this fixing means 22A is a suction cup, preferably of elongated shape to facilitate its mounting and not to hinder the positioning of the frame 3 around the slab 42. The mounting device 22B of each fixing end 22 allows the pivoting of the fixing means 22A around the frame 3, and, more specifically, around the profile (31, 32) on which it is mounted. The fixing means 22A comprises a contact face 22A.1 with one of the upper 41A.1 or lateral 41A.2 walls of the upper end 41A of the vault 41 on which the slab 42 is positioned. This mounting is carried out in such a way that the contact face 22A.1 of said means is fixed to one of the lateral walls 41A.2 of the vault 41, allowing the frame 3 to be mounted on the vault 41 of a funerary monument 4 whose slab 42 has dimensions greater than or equal to the dimensions of said vault. On the other hand, the mounting of the fixing means 22A so that the contact face 22A.1 is fixed to the upper wall 41A.1 of the vault 41 allows the frame 3 to be mounted on the vault 41 of a funerary monument 4 whose slab 42 has dimensions smaller than the dimensions of said vault. The mounting device 22B comprises a rigid fixing part 22B.1 positioned on the fixing means 22A and attaching said means to an upper part 22B.2 mounted on the frame 3. This part 22B.2 has a U-shaped cross-section configured to be able to be easily mounted, by sliding, on the profile (31, 32) on which the fixing means 22A is to be mounted. Preferably, this profile is a longitudinal profile 31. The upper part 22B.2 is closed by a closing element 22B.3, which blocks the fixing means 22A in the desired position. The U-shape of the upper part 22B.2 coupled with a parallelepiped shape of a cross-section of the profiles (31, 32) makes it possible to improve the mounting and then the blocking, in the appropriate position, of the fixing means 22A on the profile. As in the previously described variants, pipes may individually connect the suction cups to a compressor which may inject or remove air from the suction cup(s), the air being located between its contact face 22A.1 and the corresponding wall (41A.1, 41A.2) of the vault 41. Alternatively, all the suction cups may be actuated simultaneously, the control of the air inlet and outlet of a suction cup being able to be achieved by valves such as solenoid valves. Preferably, most of the components of the guidance system according to the invention are made of metallic materials, such as steel or aluminum. The invention also relates to a method for moving a slab of a funerary monument vault according to the invention. This method will be described in correlation with the systems and lifting beams previously described in Figures 1 to 4. The first step of the method according to the invention consists in positioning and fixing one of the guide systems 1 according to one of the embodiment variants presented in Figures 1 to 4 on the vault 41. The system 1 chosen depends in particular on the dimensions of the slab 42 and of the vault 41. For example, when the slab 42 is cantilevered, only the guide systems 1 presented in Figures 3 and 4 can be used. More specifically, the guide devices 2 of the chosen system will be positioned around or on the slab 42 of the monument 4, so that each of these devices precisely delimits the previous positioning of said slab before its removal. At least one guide device 2 is positioned on each of the sides of the slab 42, but more preferably, at least two devices are positioned on each of said sides. The guide system 1 is positioned on an upper end 41A of the vault 41 or on lateral edges 42B of the slab 42. The second step consists of positioning a spreader bar on the slab 42, so that the fixing means or means fixed to this spreader bar, such as suction cups, are fixed to the upper face 42C of said slab. The dimensions and shape of the spreader bar can be adapted to the dimensions and shape of the slab 42. An air vacuum is created on the suction cups, manually or automatically using, for example, control consoles, so as to fix the suction cup or cups to the slab 42. Alternatively, a fixing means or a suction cup can be directly mounted on the slab, without using a spreader bar. The third step consists of lifting and then moving the slab 42, the lifting beam being configured to be temporarily caught by a lifting device so as to allow the lifting of the slab 42 and the opening of the monument 4. The fourth step of the method consists of repositioning, in an adequate and precise manner, said slab on the vault 41. The slab 42 will automatically orient itself between the guide devices 2 of the guide system 1, the second lateral portion 21A.2 of the rods of said devices allowing a progressive and automatic recentering of the slab 42 on the vault 41 according to its original position, determined by said devices. Finally, the moving method includes a final step of removing the guidance system 1 and the lifting beam from the funerary monument 4. The use of suction cups makes it easy to remove each of the guidance devices 2 individually, allowing air to enter the suction cups. Optionally, when necessary, the monument 4 is resealed to limit the risk of intrusion of water or particles, for example. Such a method, due to the use of the guide devices 2 according to the invention, makes it easier to place the slab 42 on the vault 41 after its removal, since the previous positioning of the slab 42 is kept in memory by the different guide devices 2. The invention also relates to a method of guiding the movement of a slab positioned on a funerary monument vault. This method will be described in correlation with the fourth variant described in Figures 5 and 6, and comprises the following steps. A step of positioning a guide system 1 according to the fourth embodiment of the invention takes place. This system 1 is positioned on the upper end 41A of the vault 41 so that said system delimits the front positioning of the slab 42. Advantageously, the positioning of the guide system 1 is achieved by positioning the first vertical portions 21A.1 of the guide elements 21A against the lateral faces 42A of the slab 42. In parallel, the fixing means 22A are positioned on the upper end 41A of the vault 41. Furthermore, in this step, an adjustment of the dimensions of the frame 3 according to the dimensions of the slab 42 can be carried out by linear sliding of the angular profiles 32 in the corresponding longitudinal profiles 31. Once this adjustment has been carried out, the temporary fixing of the angular profiles 32 relative to the longitudinal profiles 31 is carried out, by tightening the fixing parts 31A. A more precise adjustment in height and width can also be carried out. This adjustment allows a precise adaptation of the frame 3 to the height and width of the slab 42, and is carried out by adjusting the vertical and horizontal reinforcements (21B.1, 21B.2) of each guide end 21, Then, a step of fixing the fixing means 22A on the vault 41 takes place, said means preferably being suction cups. The fixing is therefore carried out by activating the compressor and by removing the air located in the suction cup, between its contact face 22A.1 and the upper and / or side walls (41A.1, 41A.2) of the vault 41. After this, a step of removing the slab 42 from the vault 41 on which it was mounted takes place. Subsequently, a step of repositioning the slab 42 on the vault 41 in its original location takes place, thanks to an automatic recentering carried out by the guide ends 21, and more precisely, by the guide elements 21A of the guide devices 2. This step can also comprise a sub-step of sealing the slab 42 on the vault 41, the sealing being able to be carried out by methods known to those skilled in the art, such as by the use of a seal for example. Finally, a step of removing the lifting beam and / or the means of fixing the slab 42, then removing the guide system 1 from the vault 41 takes place. This step consists of positioning the lifting beam, and / or a means of fixing on the slab 42, then lifting and moving said slab. Alternatively, after positioning and fixing the guidance system on the vault, the frame can be removed from the funerary monument, so that only the fixing ends remain attached to the vault. This can facilitate handling, particularly to facilitate burial, especially when the vault is level with the ground. Alternatively, a third method of moving a tomb slab of a funerary monument according to the invention is possible. This method will be described in correlation with the systems and lifting beams previously described in Figures 5 and 6. A first step of removing the slab 42 is carried out using a lifting beam and / or a fixing means. This slab is generally placed near the vault, before burial. Then, there is a second step of positioning the guidance system 1 according to the invention around the slab 42. The guidance system 1, and more particularly, the dimensions of the frame 3 are then adapted to the dimensions of the slab 42. Advantageously, the positioning of the guidance system 1 is carried out by positioning the first vertical portions 21A.1 of the guidance elements 21A against the lateral faces 42A of the slab 42. In addition, at this stage, an adjustment of the dimensions of the frame 3 according to the dimensions of the slab 42 can be carried out by linear sliding of the angular profiles 32 in the corresponding longitudinal profiles 31. Once this adjustment has been carried out, the temporary fixing of the angular profiles 32 relative to the longitudinal profiles 31 is carried out, by tightening the fixing parts 31 A. A more precise adjustment in height and width can also be carried out. This adjustment allows precise adaptation of the frame 3 to the height and width of the slab 42, and is carried out by adjusting the vertical and horizontal reinforcements (21B.1, 21B.2) of each guide end 21. A third step takes place after the burial, in which the guidance system 1 is positioned on the upper end 41A of the vault 41. The vault can then be measured in order to determine the ideal location of the slab relative to the underlying vault. The fixing means 22A are then positioned on the upper end 41A of the vault 41 according to the desired positioning for the slab. Then, a step of fixing the fixing means 22A on the vault 41 takes place, said means preferably being suction cups. The fixing is therefore carried out by activating the compressor and by removing the air located in the suction cup, between its contact face 22A.1 and the upper and / or side walls (41A.1, 41A.2) of the vault 41. Subsequently, a step of repositioning the slab 42 on the vault 41 takes place thanks to an automatic recentering carried out by the guide ends 21, and more precisely, by the guide elements 21A of the guide devices 2. This step may comprise a sub-step of sealing the slab 42 on the vault 41, the sealing being able to be carried out by methods known to those skilled in the art, such as by the use of a seal for example. Finally, a step of removing the lifting beam and / or the means of fixing the slab 42, then removing the guide system 1 from the vault 41 takes place. This step consists of positioning the lifting beam, and / or the means of fixing on the slab 42, then lifting and moving said slab. All systems, devices and lifting beams may include buffers made from flexible materials such as elastomers or foam, positioned near the slabs, steles or various funerary elements, and which will limit the damage caused to said elements during their movement. The arrangement of the various elements and / or means and / or steps of the invention, in the embodiments described above, should not be understood as requiring such an arrangement in all implementations. In any event, it will be understood that various modifications may be made to these elements and / or means and / or steps, without departing from the spirit and scope of the invention. Further, one or more features disclosed only in one embodiment may be combined with one or more other features disclosed only in another embodiment. Similarly, one or more features disclosed only in one embodiment may be generalized to other embodiments, even if that or those features are described only in combination with other features. The use of the verb "comprise", "comprise" or "include" and its conjugated forms does not exclude the presence of other elements or other steps than those set out in a claim.

Claims

Claims

1. Guidance system (1) for positioning a slab (42) on an upper end (41 A) of a monument vault (41) funeral (4), said system comprising at least four devices guide (2) positioned, each, at a distance from each other so that said devices surround the slab (42), each guide device (2) comprising at least: a fixing end (22) comprising at least one mo fixing yen (22A) configured to allow mounting transition of the guide device (2) on the upper end lower (41A) of the vault (41), and a guide end (21) with a guide element ( 21A) configured to be in contact with the slab (42) when said device is in the mounting position on the vault (4 1).

2. Guidance system (1) according to claim 1, characterized in that that: the fixing means (22A) of the guide device (2) is a suction cup configured to allow transitory fixing re of said device on the vault (41), and the guide element (21 A) of the guide device (2) is a rod comprising:

1. a first vertical portion (21A.1) extending from the suction cup and following a main axis (Ap ) parallel to a vertical plane (z) of the funeral monument raire (4), and it. a second lateral portion (21 A.2) extending from from said first portion and at an angle (a ) between 15° and 40° relative to the principal axis ipal (Ap) of the first portion (21A.1), the second portion (21 A.2) being oriented towards the e exterior of the funerary monument (4) so ​​as to see gradually orient the positioning of the slab (42) on the vault (41) when the device guide f (2) is in mounting position on led it cellar.

3. Guidance system (1) for positioning a slab (42) on an upper end (41 A) of a monument vault (41) funeral (4), said slab comprising lateral borders (42B) which extend beyond the underlying edges (41B) of the vault (41), said system comprising at least four guidance devices (2) configured to be mounted transiently on the side edges (42B) of the slab (42), each guide device (2) comprising: a main portion (23) configured to surround at least ns partially the lateral edge (42B) of the slab (42), adjustment elements (24) positioned around the perimeter of the main portion (23) of the guide device (2), the said all elements being configured to adapt the fixing of the device guide element (2) on the side edge (42B) along 1' thickness and / or size of said border, and a fixing means (22A) in continuity with the main portion principal (23) of the device (2) and configured to be fixed on a upper face (42C) of the slab (42).

4. Guidance system (1) according to claim 1, said system comprising a chassis (3), the at least four guide devices (2) being configured to be mounted on the chassis (3), the fixing ends (22) and the guide ends (21) of the guide devices (2) being mounted separately on the chassis (3), the mounting being carried out by a mounting element (21B) for each guide end (21), or by a mounting device (22B) for each fixing end (22).

5. Guidance system (1) according to claim 4, characterized in that that the guide element (21 A) of each guide end (21) is fixed on the chassis (3) by the mounting element (21B), the element guide (21A) comprising: - a first vertical portion (21 À.1) lower configured for be positioned, in use, against a side face (42A) of the slab (42), and - a second upper lateral portion (21 A.2) extending from the first portion (21A.1) at an angle (a) so as to optimize the guidance of the slab (42), the second lateral portion @I1A.2) being oriented, in use, towards the exterior of the monument funeral (4).

6. Guidance system (1) according to claim 5, characterized in that that each mounting element (21B) comprises: - a vertical frame (21B.1) fixed to the chassis (3) by a first fixing element (21B.3), and - a horizontal frame (21B.2) fixed to the vertical frame (21B.1) by a second fixing element (21B.4) and which extends horizontally relative to the vertical reinforcement (21B.1), with an inner end of the horizontal frame (21B.2) fixed to the guide element (21A).

7. Guidance system (1) according to one of claims 4 to 6, characterized in that the at least one fixing means (22A) transitional of each fixing end (22) is mounted on the chassis (3) by the mounting device (22B) and is configured to temporarily hold the frame (3) in position around the slab (42).

8. Guidance system (1) according to claim 7, characterized in that that each mounting device (22B) is configured to be able to rotate the corresponding fixing means (22A) around the chassis (3), so that a contact face (22A.1) of said means either in contact with an upper wall (41 A.1) or a side wall (41A.2) of the upper end (41A) of the vault (41).

9. Guidance system (1) according to one of claims 5 to 8, characterized in that the chassis (3) further comprises: - Four longitudinal profiles (31) configured to extend, each, along one of the side faces (42A) of the slab (42), and - Four angular profiles (32) configured to operate a coupling dynamic with the longitudinal profiles (31) so as to allow adaptation of the chassis dimensions (3) to slab dimensions (42).

10. Guidance system {1) according to claim 9, characterized in that that the longitudinal profiles (31) are hollow and configured to receive, each, one of the ends of the angular profiles (32) so as to allow the linear sliding of the angular profiles (32) in the longitudinal profiles (31), the temporary blocking of an angular profile (32) relative to the longitudinal profile (31) corresponding being made by one or more fixing parts (31A).

11. Guidance system (1) according to one of claims 9 or 10, characterized in that the guide devices (2) are mounted on the longitudinal profiles (31) of the chassis (3).

12. Method of moving a slab (42) positioned on a vault (41) of a funerary monument (4), said method comprising: A first step of positioning and fixing an s guidance system (1) according to one of claims 1 to 3. on an upper end (41 A) of the vault (41) or on s side edges (42B) of the slab (42), so that c Each guide device (2) precisely delimits the posi previous operation of said slab, and that said system in tower said slab, A second step of positioning a spreader on 1 a slab (42), so that one or more means of fixing u spreader are fixed on an external face (42A, 42C) of the slab (42), A third stage of lifting and then moving and the slab (42), the spreader being configured to be caught temporarily by a lifting device so as to perm place the opening of the funeral monument (4), A fourth step of repositioning the slab (42) s on the vault (41), said slab being laid similarly to its original position thanks to automatic re-centering read by the guiding devices (2), and finally A final step of removing the guidance system (1) and u hoist of the funeral monument (4), with possibly sealing of said monument.

13. Method of guiding the movement of a positioned slab (42) on a vault (41) of a funerary monument (4), said method including: - A step of positioning a guidance system (1) according to one of claims 4 to 11 on the upper end (41A) of the vault (41) so that the guide system (1) delimits the anterior positioning of the slab (42), - A step of fixing the fixing means (22A) on the vault (41), - A step of removing the slab (42) carried out by a lifting beam and / or a means of fixing, - A step of repositioning the slab (42) on the vault (41) at its original location thanks to automatic refocusing carried out by the guide elements (21 A) of the guide devices (2), and Finally - A step of removing the spreader bar and / or the means of fixing the slab (42), then removal of the guidance system (1) from the vault (41).

14. Guiding method according to claim 13, characterized in that e, at the positioning stage of the guidance system (1): - the first vertical portions (21 AÀ.1) of the guide elements (21A) are positioned against the side faces (42A) of the slab (42), and that - the fixing means (22A) are positioned on the end upper (41 A) of the vault (41).

15. Guiding method according to one of claims 13 or 14, characterized in that the step of repositioning the slab (42) on the vault (41) may include a sub-step of sealing the slab (42) on the vault (41).

16. Guiding method according to one of claims 13 or 14, characterized in that, during the system positioning step guide (1) on the vault (41): - an adjustment of the dimensions of the chassis (3) according to the dimensions of the slab (42) is made by linear sliding of the angular profiles (32) in the corresponding longitudinal profiles (31).

17. Guiding method according to claim 16, characterized in that, during the step of positioning the guidance system (1) on the cellar (41), precise adjustment in height and width of the elements guide (21A) according to the height and width of the slab (42) is achieved by adjusting vertical and horizontal reinforcements (21B.1, 21B.2) of the guide ends (21).