EP1035956A1 - Surfacing device - Google Patents

Surfacing device

Info

Publication number
EP1035956A1
EP1035956A1 EP99946259A EP99946259A EP1035956A1 EP 1035956 A1 EP1035956 A1 EP 1035956A1 EP 99946259 A EP99946259 A EP 99946259A EP 99946259 A EP99946259 A EP 99946259A EP 1035956 A1 EP1035956 A1 EP 1035956A1
Authority
EP
European Patent Office
Prior art keywords
rule
assembly
container
shaft
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99946259A
Other languages
German (de)
French (fr)
Other versions
EP1035956B1 (en
Inventor
Roger Deloris
Jean-Claude Dumont
Thierry Duquesnoy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orano Demantelement SAS
Original Assignee
Compagnie Generale des Matieres Nucleaires SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale des Matieres Nucleaires SA filed Critical Compagnie Generale des Matieres Nucleaires SA
Publication of EP1035956A1 publication Critical patent/EP1035956A1/en
Application granted granted Critical
Publication of EP1035956B1 publication Critical patent/EP1035956B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/008—Apparatus specially adapted for mixing or disposing radioactively contamined material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/29—Producing shaped prefabricated articles from the material by profiling or strickling the material in open moulds or on moulding surfaces
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/20—Implements for finishing work on buildings for laying flooring
    • E04F21/24—Implements for finishing work on buildings for laying flooring of masses made in situ, e.g. smoothing tools
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/34—Disposal of solid waste
    • G21F9/36—Disposal of solid waste by packaging; by baling

Definitions

  • the invention relates to a surfacing device intended to make the upper surface of a viscous material contained in a container substantially planar and to a surfacing method using such a device.
  • surfacing relates to the operation of making the surface of a viscous material, such as concrete or cement, flat.
  • a surfacing operation is carried out manually with a tool having a flat surface (a ruler or a mason's trowel), this tool being moved horizontally and substantially parallel to the surface to be smoothed by the operator, the surface flat, for example the edge of the tool, penetrating a few millimeters inside the material to "level" the upper surface of the viscous material in order to flatten it.
  • the operator prints a movement to the tool, left to his discretion, which can be circular, linear or arbitrary.
  • the object of the present invention is to resolve the drawbacks of the prior art by providing a device making it possible to automate the surfacing operation in order to make this operation reproducible and achievable without the intervention of an operator near the container. .
  • a surfacing device intended to make the upper surface of a viscous material contained in a container having a bottom and a vertical cylindrical side wall substantially planar, the upper edge of which delimits a circular opening, characterized in that it includes: a movable assembly intended to be placed in an operational position with respect to said container, in which said assembly is above said opening,
  • first motor means and a first guide system ensuring a vertical translational movement of said assembly relative to said casing
  • a mobile sub-assembly belonging to said assembly said sub-assembly comprising: a vertical shaft, coaxial with said cylindrical side wall in said position operational of said assembly, the upper part of said shaft being integral with said second drive means, and a rule connected to the lower part of said shaft, of length substantially equal to the radius of said opening and having a lower surface having a horizontal longitudinal portion intended to level the upper surface of the viscous material, said rule penetrating into said opening and into said viscous material during a first phase of activation of the first motor means causing the descent of said assembly, said rule being rotated during a second phase of activation of the first motor means causing the rem of this set.
  • the combination of the movement of raising and rotation of the rule, during the second phase makes it possible to carry out surfacing by the passage in several times, and at regularly increasing heights, of the rule in each place of the upper surface. viscous material so that when the ruler is no longer in contact with the surface, all of the material has been regularly distributed without the need to remove excess material, and thereby clean up any splashes.
  • said subassembly further comprises an arm fixed to said lower part of the shaft and extending diametrically above said opening in said operational position, an end part of the arm being connected to said rule and the other end part being connected to a balancing system ensuring the horizontality of the longitudinal portion of the lower surface of said rule.
  • said subassembly further comprises a vibratory system connected to said rule, in order to add a movement of vertical oscillations to said rule during its rotation, and a damping system placed between said arm and said rule and avoiding the transmission of vibrations resulting from the oscillations of the rule to the rest of said device.
  • said vibratory system comprises a pneumatic vibrator integral with said rule and supplied by a compressed air circuit comprising a source of compressed air, a bent supply tube having an upstream section, preferably vertical, connected to said source, a rotary connection connecting the downstream section of said tube to the upper part of said shaft, a longitudinal channel passing right through said shaft and a flexible tube connecting the lower end of said channel to said vibrator and said damping system has elastic studs.
  • the present invention also relates to the surfacing process using the device defined above and characterized in that it comprises the following steps:
  • said device is positioned so as to place said assembly in its operational position above the opening of said container, the shaft being coaxial with said container, the rule being above a radius of said opening,
  • a first phase is carried out during which said first motor means are activated to lower said assembly until said longitudinal portion of the rule has penetrated into said viscous material
  • - A second phase is carried out during which said second motor means are activated to rotate said rule and during which said first motor means are activated to cause said assembly to rise at least until said longitudinal portion of the rule has left the viscous material.
  • the second phase is a phase during which, in a first step, said second motor means are activated to set said rule in rotation at a first speed of rotation, then, in a second step, said second motor means are activated to rotating said rule at a second speed of rotation, less than said first speed of rotation.
  • the present invention also relates to the use of the surfacing device of the aforementioned type for a container, preferably made of concrete, which contains said viscous material, preferably concrete, and at least one case containing contaminated waste for storage. subsequent long-term and in that said viscous material was poured into said container during the vibratory phase of a vibrating table with vertical acceleration on which said container is retained.
  • FIG. 1 is a longitudinal sectional view of a container containing a viscous material whose upper surface must be smoothed
  • - Figure 2 is a schematic view in longitudinal section of a surfacing device according to the present invention positioned above the container of Figure 1;
  • FIG. 3 is an elevational view of the surfacing rule as it would be visible from the rear of the sheet of Figure 2;
  • - Figure 4 is a top view of the rule of Figure 3;
  • - Figure 5 is a view of the rule in the direction VV of Figure 4; and,
  • FIG. 6 is a sectional view in the direction VI-VI of the rule according to Figure 4.
  • the illustrated embodiment relates to the use of- surfacing device which will be described below for a container used in the nuclear industry, in order to condition technological waste contaminated by coating in fiber concrete.
  • the waste in question is first placed in specially designed cases 10 which are stacked inside a cylindrical container or container 12, preferably itself made of fiber concrete.
  • the cases 10 are embedded inside a mass of a very viscous material 14, preferably fiber concrete, which has previously been poured inside the container to a level almost flush with the upper edge 12c of the container 12.
  • a very viscous material 14 preferably fiber concrete
  • the container 12 formed by a bottom wall 12a and a cylindrical side wall 12b, rests, by the lower face 12d of the bottom wall 12a, on a support whose flatness is at least of the same quality level as that of the face 12d.
  • the upper level 14a thereof is located a few centimeters at most below the annular upper free edge 12c of the container 12.
  • the concrete must have a perfect surface condition at its surface 14a in order to allow the stacking by stacking of a series of containers 12 which guarantees the absence of any defect or damage to the surface 14a of the concrete when this one is dry. Indeed, such a defect would be likely to compromise the long-term tightness of the container 12, its storage being planned for several hundred years.
  • this concrete 14 After the concrete has solidified completely, it is the upper surface 14a of this concrete 14 which constitutes the upper surface of the container, no other cover being necessary. Thus, if this upper surface 14a has roughness or surface irregularities, the latter risk causing cracking phenomena, for example following an infiltration of liquid. To carry out the surfacing of this surface 14a, manual surfacing is excluded due to the radioactivity of the waste enclosed in the cases 10, so that this operation must be able to be carried out automatically with a remote control.
  • the concrete 14 Prior to the surfacing step, the concrete 14 "is poured inside the container 12 while the container 12 is subjected to a vibrating table in order to avoid any air bubble inside the concrete If, after filling, it is judged that a quantity of excess concrete is present in the container 12, provision is made then that, prior to the surfacing operation, the container 12 passes to a scraping station which makes it possible to remove the excess concrete, that is to say almost all the concrete which protrudes beyond the upper edge 12c of the container 12.
  • FIG. 2 schematically illustrating the surfacing device 20 according to the present invention, placed in its operational position above the container 12.
  • the surfacing device 20 has an upper part 20a corresponding to all of the motorization and guiding elements, advantageously remotely controlled, and which allow a vertical translational movement and a rotational movement to be carried out simultaneously or successively as will be described below.
  • the lower part 20b of the device 20 includes all the elements allowing the rule to be correctly positioned and to have the most appropriate movement to obtain, after surfacing, a surface condition as flat as possible, that is to say say an upper surface 14a of the smoothest concrete possible.
  • the operating principle is as follows: a rule 22 is placed above the container 12 opposite a radius of its opening 12e, the rule having a length substantially equal to the inside radius of the container 12 and having a specific profile which will be described later.
  • the rule 22 is rotated around the axis Z of the container 12 while the bottom surface of the rule is located a few millimeters below the surface 14a of the concrete so as to distribute the quantity of concrete situated above this level. .
  • the rule 22 while the rule 22 is in rotation, the latter is gradually raised vertically until it leaves completely concrete to obtain a flat surface 14a '.
  • the rule is raised in two stages (roughing and finishing) corresponding respectively to two successively fast rotation speeds (working speed) and slow (finishing speed).
  • the device 20 comprises a set of elements forming a movable assembly in vertical translation, a part of this movable assembly 24 forming a sub-assembly 26 which is, moreover, movable in rotation.
  • the device 20 further comprises a casing 28 having an open bottom part, fixedly disposed essentially above the opening 12e of the container 12 in said operational position illustrated in the Figure 2.
  • this housing 28 is housed at least partially said movable assembly 24 provided with a housing 30 movable in vertical translation relative to the housing 28 and housing the upper part of the subassembly 26.
  • the housing 28 and the housing 30 form two hollow mechanically welded elements nested one inside the other.
  • the device comprises first motor means in the form of a stepping motor 32 mounted in the upper part of said casing 28 and having a vertical output shaft 34 whose free end 34a is threaded and cooperates with the upper part 30a of the housing 30 forming a nut.
  • the casing 28 is extended in its lower part by a bell 36 which closes, by covering it, the opening 12e of the container 12.
  • This bell 36 thus constitutes the lower part of the casing forming the lid of the container 12, placed above the rule 22 and comprising a circular lower edge 36a connected to the side wall 12b, sealing means being placed between the lower edge 36a of this lower part 36 and said side wall 12.
  • the lower edge 36a of the bell 36 has a diameter equal to that of the upper edge 12c of the container 12, the seal being ensured by a flat annular crushing joint 38 compressed between the facing edges of the bell 36 and of the container 12.
  • a first guide system ensures the movement of " vertical translation between the casing 28 and the movable assembly 24 thanks to the presence of at least one bearing 42 placed between the inner surface of the casing 28 and the outer surface of the housing 30.
  • the device 20 comprises two bearings 42 located respectively at the top and bottom of the upper part 20a of the device 20.
  • a key 44 is mounted between the latter.
  • the rotation of the threaded free end 34a of the shaft 34 causes the vertical translation of the housing 30 and of all the elements which it contains and which are integral with it .
  • the upper part 46a of the shaft 46 is connected to rotation means comprising second motor means, integral with the housing 30, which ensure, with a second guide system, a rotational movement between said sub-assembly 26 and the housing 30, the shaft 46 being rotatably mounted in the housing 30.
  • the second motor means comprise a motor-reduction unit 48 composed of a motor driving a speed reducer with a vertical axis which rotates a pinion 50 with a vertical axis.
  • This pinion 50 meshes with a toothed wheel 52 coaxial with said shaft 46 and fixed around the upper part 46a of this shaft 46.
  • This toothed wheel 52 has a number of teeth which will have been determined in order to obtain the desired reduction ratio between the wheel 52 and the pinion 50.
  • a second guide system is provided comprising at minus a bearing 54 placed between said shaft 46 and said housing 30.
  • two bearings 54 were placed, preferably tapered roller bearings, along the shaft 46. These bearings 54 prevent any lateral movement of the shaft 46, and of all the elements which are attached to it and which form the sub-assembly 26, with respect to the housing 30.
  • the device further comprises means for detecting the angular position of said sub-assembly 26 relative to the housing 30 by means of a coding ring 56 fixed on the wheel 52 and carrying, at two different heights, terminals regularly distributed over the circumference of the crown 56.
  • Two inductive proximity detectors 58 are placed opposite the crown 56 in order to possibly identify the passage of a terminal opposite one of the detectors 58.
  • the terminals and the detectors 58 form a logical unit making it possible to know at any time the number of turns made by the shaft 46, that is to say by the rule 22.
  • the lower part 46b of the shaft is connected to a horizontal arm 60, the shaft being centered on this arm 60.
  • a first end part 60a (at left in Figure 2) is connected, via a support system, to the rule 22 and the second end part 60b of the arm 60 (right part of Figure 2) is connected to a balancing system in the form of a counterweight 62 intended to guarantee the horizontality of the arm 60 so as to also keep the rule 22 horizontal without creating an imbalance at the level of the lower part of the shaft 46.
  • the device 20 also includes a pneumatic vibrator 64 intended to impart to the rule 22 a movement of vertical oscillations during its rotation, these oscillations making it possible to considerably improve the final surface condition of the concrete 14.
  • a compressed air circuit is provided which arrives at the level of the device 20 by an elbow supply tube 66 having a vertical upstream section 66a, communication of fluid with a compressed air source, passing through the upper wall of the casing 28 so sliding and forming a pivot connection 68 with the upper wall of the housing 30.
  • the downstream section 66b of the supply tube 66 is connected to a rotary connector 70 placed coaxially above the upper part 46a of the shaft 46 which has a longitudinal channel 46c opening into the lower part 46b of the shaft 46 at the level of a flexible tube 72, the other end of which is connected to the vibrator 64.
  • the rule 22 is fixed under an adjustable plate 74 which can slide against a fixed plate 75, placed above the plate 74, by means of a screw (not shown), the assembly forming means for adjusting the radial position of rule 22 with respect to tree 46.
  • the vibrator 64 is placed above the fixed plate 75 which is connected to the arm 60 by four elastic studs 76 forming a damping system intended to attenuate the transmission of the vibrations of the vibrator to the rest of the elements of the device 20.
  • the position of the rule 22 is refined so that its radially internal end 22a is centered relative to the opening 12e of the container 12, that is to say coaxial with the axis Z.
  • This radially internal end 22a is provided with a lug 78 or pin placed coaxially with the axis Z of the container 12 in the operational position of the device 20, this lug 78 protruding downward relative to the rule 22.
  • the lug 78 forms a depression on the upper surface 14a of the concrete, this depression being gradually filled by the concrete during the second ascent phase of said rule 22 so as to be able to use the residues accumulated in the center of the surface thus avoiding the formation of a central spike of material which would be unacceptable.
  • the radially outer end 22b of the rule 22 is itself provided with a seal of elastomeric material 80 which extends the rule radially and which is intended to come into contact with the internal face of the side wall 12b of the container 12 to avoid a rise in material at this level.
  • the rule 22 has a horizontal longitudinal portion 22c delimited by a contour forming a section of a ring having an internal radius R2 and a ring width e. This horizontal portion 22c is adjacent to and delimited by a rear vertical wall 22d.
  • the horizontal portion 22c is extended, in the direction of the vertical front wall 22e, by an inclined portion 22f, ascending from the horizontal portion 22c in the direction of the side wall of the rule 22 forming the front wall 22e during the rotation of the rule 22.
  • the anterior edge 22g of the inclined portion 22f forms an ascending line from the radially internal end 22a towards the radially external end 22b of the rule, this front edge 22g forming an arc of a radius RI in horizontal projection ( Figure 4) and a straight line in vertical projection ( Figure 3).
  • the rear edge 22h of the inclined portion 22f, adjacent to the horizontal portion 22c, forms an arc of a circle of radius R2, R2 being larger than RI.
  • the rule 22 has a cross section in the form of a polygon with five sides corresponding to a rectangle whose angle, between the front wall 22e and the horizontal wall 22c, is truncated to form the inclined portion 22f.
  • the concrete is entrained from the center of the rule 22 towards its periphery so that the thickness of the excess concrete is folded down and spread out gradually, during the rotation of the rule, from the center of the surface 14a to the periphery of the surface 14a.
  • the purpose of the very particular profile of this rule 22 is to homogenize the relative running speeds between the center 22a and the periphery 22b of the rule 22 relative to the container 12.
  • the latter first rotates at a first speed of rotation of the geared motor assembly 48, in order to produce the roughing of the surface 14a, then the speed of rotation of the rule 22 before it comes out of concrete in order to carry out a finishing step on several turns of the rule 22, always rotating with an upward movement, in order to have less and less concrete folded down by the inclined portion 22f, to finally arrive at a position in which the horizontal portion 22c is flush with the planar upper surface 14a 'of the concrete.
  • the surfacing device 20 described above is associated with :
  • a remote monitoring system comprising cameras, some of which make it possible to monitor the condition of the surface of the concrete during and at the end of smoothing; this remote monitoring system allowing the operator to follow in detail the progress of the surfacing process in order to stop it if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The invention concerns a device comprising a mobile assembly (24) designed to be placed in an operational position wherein said assembly (24) is above the opening (12e) of a container (12) filled with a viscous material, first driving means (32) and a first guiding system (30a, 34a, 42) ensuring a vertical translation motion of said assembly (24) relative to said container (12), and second driving means (48) with variable speed and a second guiding system (54), ensuring a rotating motion of a mobile sub-assembly (26) pertaining to said assembly (24). Said sub-assembly (26) comprises a vertical shaft whereof the top part (46a) is integral with said second driving means (48) and a smoothing board (22) coupled with the lower part (46b) of said shaft which has a length substantially equal to the radius of said opening (12e) and a lower surface with a horizontal longitudinal portion for levelling the viscous material top surface (14a).

Description

Dispositif de surfaçage.Surfacing device.
L'invention concerne un dispositif de surfaçage destiné à rendre sensiblement plane la surface supérieure d'un matériau visqueux contenu dans un récipient et un procédé de surfaçage utilisant un tel dispositif.The invention relates to a surfacing device intended to make the upper surface of a viscous material contained in a container substantially planar and to a surfacing method using such a device.
Le terme surfaçage concerne l'opération consistant à rendre plane la surface d'un matériau visqueux tel que du béton ou du ciment.The term surfacing relates to the operation of making the surface of a viscous material, such as concrete or cement, flat.
Selon l'art antérieur, une opération de surfaçage est réalisée manuellement avec un outil présentant une surface plane (une règle ou une truelle de maçon), cet outil étant déplacé horizontalement et sensiblement parallèlement à la surface à lisser par l'opérateur, la surface plane, par exemple la tranche de l'outil, pénétrant de quelques millimètres à l'intérieur de la matière pour "niveler" la surface supérieure du matériau visqueux afin de l'aplanir. L'opérateur imprime à l'outil un mouvement, laissé à son appréciation, qui peut être circulaire, linéaire ou quelconque.According to the prior art, a surfacing operation is carried out manually with a tool having a flat surface (a ruler or a mason's trowel), this tool being moved horizontally and substantially parallel to the surface to be smoothed by the operator, the surface flat, for example the edge of the tool, penetrating a few millimeters inside the material to "level" the upper surface of the viscous material in order to flatten it. The operator prints a movement to the tool, left to his discretion, which can be circular, linear or arbitrary.
Cette opération manuelle de surfaçage n'est dont pas strictement reproductible, donne des résultats très inégaux dont la qualité est le plus souvent liée à l'expérience de l'opérateur. En outre, une telle opération n'est pas réalisable au sein d'un environnement hostile ne permettant pas la présence d'un opérateur, en particulier dans le cas d'un environnement radioactif.This manual surfacing operation is therefore not strictly reproducible, gives very uneven results the quality of which is most often linked to the operator's experience. In addition, such an operation cannot be carried out in a hostile environment which does not allow the presence of an operator, in particular in the case of a radioactive environment.
La présente invention a pour objectif de résoudre les incon- vénients de l'art antérieur en fournissant un dispositif permettant d'automatiser l'opération de surfaçage afin de rendre cette opération reproductible et réalisable sans l'intervention d'un opérateur à proximité du récipient.The object of the present invention is to resolve the drawbacks of the prior art by providing a device making it possible to automate the surfacing operation in order to make this operation reproducible and achievable without the intervention of an operator near the container. .
Cet objectif est atteint selon la présente invention grâce à un dispositif de surfaçage destiné à rendre sensiblement plane la surface supérieure d'un matériau visqueux contenu dans un récipient présentant un fond et une paroi latérale verticale cylindrique dont le bord supérieur délimite une ouverture circulaire, caractérisé en ce qu'il comprend : - un ensemble mobile destiné à être placé dans une position opérationnelle vis-à-vis dudit récipient, dans laquelle ledit ensemble est au-dessus de ladite ouverture,This objective is achieved according to the present invention by means of a surfacing device intended to make the upper surface of a viscous material contained in a container having a bottom and a vertical cylindrical side wall substantially planar, the upper edge of which delimits a circular opening, characterized in that it includes: a movable assembly intended to be placed in an operational position with respect to said container, in which said assembly is above said opening,
- des premiers moyens moteurs et un premier système de guidage, assurant un mouvement de translation verticale dudit ensemble par rapport audit carter, etfirst motor means and a first guide system, ensuring a vertical translational movement of said assembly relative to said casing, and
- des deuxièmes moyens moteurs à vitesse variable et un deuxième système de guidage, assurant un mouvement de rotation d'un sous- ensemble mobile appartenant audit ensemble, ledit sous-ensemble comportant : un arbre vertical, coaxial avec ladite paroi latérale cylindrique dans ladite position opérationnelle dudit ensemble, la partie supérieure dudit arbre étant solidaire desdits deuxième moyens moteurs, et une règle reliée à la partie inférieure dudit arbre, de longueur sensiblement égale au rayon de ladite ouverture et ayant une surface inférieure présentant une portion longitudinale horizontale destinée à niveler la surface supérieure du matériau visqueux, ladite règle pénétrant dans ladite ouverture et dans ledit matériau visqueux lors d'une première phase d'activation des premiers moyens moteurs entraînant la descente dudit ensemble, ladite règle étant mise en rotation lors d'une deuxième phase d'activation des premiers moyens moteurs entraînant la remontée dudit ensemble.- second variable speed motor means and a second guide system, ensuring a rotational movement of a mobile sub-assembly belonging to said assembly, said sub-assembly comprising: a vertical shaft, coaxial with said cylindrical side wall in said position operational of said assembly, the upper part of said shaft being integral with said second drive means, and a rule connected to the lower part of said shaft, of length substantially equal to the radius of said opening and having a lower surface having a horizontal longitudinal portion intended to level the upper surface of the viscous material, said rule penetrating into said opening and into said viscous material during a first phase of activation of the first motor means causing the descent of said assembly, said rule being rotated during a second phase of activation of the first motor means causing the rem of this set.
Ainsi on comprend que, grâce aux premiers moyens moteurs, il est possible de réaliser la montée ou la descente de la majeure partie du dispositif, incluant la règle constituant l'outil de surfaçage, et que, grâce aux deuxièmes moyens moteurs à vitesse variable, il est possible de mettre en rotation la règle et la partie du dispositif qui lui est solidaire afin d'effectuer de manière automatique un mouvement circulaire réalisant le lissage.Thus it is understood that, thanks to the first drive means, it is possible to make the ascent or descent of the major part of the device, including the rule constituting the surfacing tool, and that, thanks to the second variable speed drive means, it is possible to rotate the rule and the part of the device which is integral with it in order to automatically carry out a circular movement performing the smoothing.
De plus, la combinaison du mouvement de remontée et de rotation de la règle, pendant la deuxième phase, permet de réaliser le surfaçage par le passage en plusieurs fois, et à des hauteurs régulièrement croissantes, de la règle en chaque endroit de la surface supérieure de la matière visqueuse de sorte que lorsque la règle n'est plus en contact avec la surface, toute la matière a été régulièrement répartie sans qu'il soit nécessaire de retirer un surplus de matière, et par-là même, de nettoyer des éventuelles éclaboussures.In addition, the combination of the movement of raising and rotation of the rule, during the second phase, makes it possible to carry out surfacing by the passage in several times, and at regularly increasing heights, of the rule in each place of the upper surface. viscous material so that when the ruler is no longer in contact with the surface, all of the material has been regularly distributed without the need to remove excess material, and thereby clean up any splashes.
Selon une avantageuse disposition, le dit sous-ensemble comporte, en outre, un bras fixé à ladite partie inférieure de l'arbre et s 'étendant diamétralement au-dessus de ladite ouverture dans ladite position opérationnelle, une partie d'extrémité du bras étant reliée à ladite règle et l'autre partie d'extrémité étant reliée à un système d'équilibrage assurant l'horizontalité de la portion longitudinale de la surface inférieure de ladite règle. Selon une autre configuration particulièrement avantageuse, ledit sous-ensemble comporte, en outre, un système vibratoire relié à ladite règle, afin d'ajouter un mouvement d'oscillations verticales à ladite règle pendant sa rotation, et un système d'amortissement placé entre ledit bras et ladite règle et évitant la transmission de vibrations résultant des oscillations de la règle au reste dudit dispositif.According to an advantageous arrangement, said subassembly further comprises an arm fixed to said lower part of the shaft and extending diametrically above said opening in said operational position, an end part of the arm being connected to said rule and the other end part being connected to a balancing system ensuring the horizontality of the longitudinal portion of the lower surface of said rule. According to another particularly advantageous configuration, said subassembly further comprises a vibratory system connected to said rule, in order to add a movement of vertical oscillations to said rule during its rotation, and a damping system placed between said arm and said rule and avoiding the transmission of vibrations resulting from the oscillations of the rule to the rest of said device.
Dans ce cas, de manière préférentielle, ledit système vibratoire comprend un vibrateur pneumatique solidaire de ladite règle et alimenté par un circuit d'air comprimé comportant une source en air comprimé, un tube d'alimentation coudé présentant un tronçon amont, de préférence vertical, relié à ladite source, un raccord tournant reliant le tronçon aval dudit tube à la partie supérieure dudit arbre, un canal longitudinal traversant de part en part ledit arbre et un tube flexible reliant l'extrémité inférieure dudit canal audit vibrateur et ledit système d'amortissement présente des plots élastiques. La présente invention se rapporte également au procédé de surfaçage utilisant le dispositif défini précédemment et caractérisé en ce qu'il comporte les étapes suivantes :In this case, preferably, said vibratory system comprises a pneumatic vibrator integral with said rule and supplied by a compressed air circuit comprising a source of compressed air, a bent supply tube having an upstream section, preferably vertical, connected to said source, a rotary connection connecting the downstream section of said tube to the upper part of said shaft, a longitudinal channel passing right through said shaft and a flexible tube connecting the lower end of said channel to said vibrator and said damping system has elastic studs. The present invention also relates to the surfacing process using the device defined above and characterized in that it comprises the following steps:
- on positionne ledit dispositif de façon à placer ledit ensemble dans sa position opérationnelle au dessus de l'ouverture dudit récipient, l'arbre étant coaxial avec ledit récipient, la règle étant au-dessus d'un rayon de ladite ouverture,said device is positioned so as to place said assembly in its operational position above the opening of said container, the shaft being coaxial with said container, the rule being above a radius of said opening,
- on réalise une première phase pendant laquelle on active lesdits premiers moyens moteurs pour faire descendre ledit ensemble jusqu'à ce que ladite portion longitudinale de la règle ait pénétré dans ledit matériau visqueux, et - on réalise une deuxième phase pendant laquelle on active lesdits deuxièmes moyens moteurs pour mettre en rotation ladite règle et pendant laquelle on active lesdits premiers moyens moteurs pour faire monter ledit ensemble au moins jusqu'à ce que ladite portion longitudinale de la règle soit sortie du matériau visqueux.a first phase is carried out during which said first motor means are activated to lower said assembly until said longitudinal portion of the rule has penetrated into said viscous material, and - A second phase is carried out during which said second motor means are activated to rotate said rule and during which said first motor means are activated to cause said assembly to rise at least until said longitudinal portion of the rule has left the viscous material.
De façon particulièrement avantageuse, la deuxième phase est une phase pendant laquelle dans un premier temps, on active lesdits deuxièmes moyens moteurs pour mettre en rotation ladite règle selon une première vitesse de rotation puis, dans un deuxième temps, on active lesdits deuxièmes moyens moteurs pour faire tourner ladite règle selon une deuxième vitesse de rotation, inférieure à ladite première vitesse de rotation.In a particularly advantageous manner, the second phase is a phase during which, in a first step, said second motor means are activated to set said rule in rotation at a first speed of rotation, then, in a second step, said second motor means are activated to rotating said rule at a second speed of rotation, less than said first speed of rotation.
La présente invention se rapporte également à l'utilisation du dispositif de surfaçage du type précité pour un récipient, de préférence en béton, qui contient ledit matériau visqueux, de préférence du béton, et au moins un étui renfermant des déchets contaminés en vue du stockage ultérieur de longue durée et en ce que ledit matériau visqueux a été coulé dans ledit récipient pendant la phase vibratoire d'une table vibrante à accélération verticale sur laquelle ledit récipient est retenu.The present invention also relates to the use of the surfacing device of the aforementioned type for a container, preferably made of concrete, which contains said viscous material, preferably concrete, and at least one case containing contaminated waste for storage. subsequent long-term and in that said viscous material was poured into said container during the vibratory phase of a vibrating table with vertical acceleration on which said container is retained.
L'invention sera mieux comprise, et des caractéristiques secondaires et leurs avantages apparaîtront au cours de la description d'un mode de réalisation donnée ci-dessous à titre d'exemple.The invention will be better understood, and secondary characteristics and their advantages will become apparent during the description of an embodiment given below by way of example.
Il est entendu que la description et les dessins ne sont donnés qu'à titre indicatif et non limitatif.It is understood that the description and the drawings are given for information only and are not limiting.
Il sera fait référence aux dessins annexés, dans lesquels :Reference will be made to the accompanying drawings, in which:
- la figure 1 est une vue en coupe longitudinale d'un récipient contenant un matériau visqueux dont la surface supérieure doit être lissée ; - la figure 2 est une vue schématique en coupe longitudinale d'un dispositif de surfaçage selon la présente invention positionné au- dessus du récipient de la figure 1 ;- Figure 1 is a longitudinal sectional view of a container containing a viscous material whose upper surface must be smoothed; - Figure 2 is a schematic view in longitudinal section of a surfacing device according to the present invention positioned above the container of Figure 1;
- la figure 3 est une vue en élévation de la règle de surfaçage telle qu'elle serait visible depuis l'arrière de la feuille de la figure 2 ;- Figure 3 is an elevational view of the surfacing rule as it would be visible from the rear of the sheet of Figure 2;
- la figure 4 est une vue de dessus de la règle de la figure 3 ; - la figure 5 est une vue de la règle selon la direction V-V de la figure 4 ; et,- Figure 4 is a top view of the rule of Figure 3; - Figure 5 is a view of the rule in the direction VV of Figure 4; and,
- la figure 6 est une vue en coupe selon la direction VI- VI de la règle selon la figure 4. Le mode de réalisation illustré concerne l'utilisation du- dispositif de surfaçage qui sera décrit ci-après pour un récipient utilisé dans l'industrie nucléaire, afin de conditionner des déchets technologiques contaminés par enrobage dans du béton fibre. Les déchets en question sont d'abord placés dans des étuis 10 conçus spécifiquement qui sont empilés à l'intérieur d'un conteneur ou récipient cylindrique 12, de préférence réalisé lui-même en béton fibre.- Figure 6 is a sectional view in the direction VI-VI of the rule according to Figure 4. The illustrated embodiment relates to the use of- surfacing device which will be described below for a container used in the nuclear industry, in order to condition technological waste contaminated by coating in fiber concrete. The waste in question is first placed in specially designed cases 10 which are stacked inside a cylindrical container or container 12, preferably itself made of fiber concrete.
Les étuis 10 sont noyés à l'intérieur d'une masse d'un matériau très visqueux 14, de préférence de béton fibre, qui a été précédemment coulée à l'intérieur du récipient jusqu'à un niveau affleurant presque le bord supérieur 12c du récipient 12.The cases 10 are embedded inside a mass of a very viscous material 14, preferably fiber concrete, which has previously been poured inside the container to a level almost flush with the upper edge 12c of the container 12.
Le récipient 12, formé d'une paroi de fond 12a et d'une paroi latérale cylindrique 12b, repose, par la face inférieure 12d de la paroi de fond 12a, sur un support dont la planéité est au moins du même niveau de qualité que celle de la face 12d.The container 12, formed by a bottom wall 12a and a cylindrical side wall 12b, rests, by the lower face 12d of the bottom wall 12a, on a support whose flatness is at least of the same quality level as that of the face 12d.
Après la coulée du béton, le niveau supérieur 14a de celui- ci est situé à quelques centimètres au plus en dessous du bord libre supérieur annulaire 12c du récipient 12.After the concrete has been poured, the upper level 14a thereof is located a few centimeters at most below the annular upper free edge 12c of the container 12.
Pour cette application, le béton doit présenter un état de surface parfait à sa surface 14a afin de permettre la superposition par empilage d'une série de récipients 12 qui garantisse l'absence d'un quelconque défaut ou endommagement de la surface 14a du béton lorsque celui-ci est sec. En effet un tel défaut serait susceptible de compromettre l'étanchéité à long terme du récipient 12, son stockage étant prévu pour plusieurs centaines d'années.For this application, the concrete must have a perfect surface condition at its surface 14a in order to allow the stacking by stacking of a series of containers 12 which guarantees the absence of any defect or damage to the surface 14a of the concrete when this one is dry. Indeed, such a defect would be likely to compromise the long-term tightness of the container 12, its storage being planned for several hundred years.
Après solidification complète du béton, c'est la surface supérieure 14a de ce béton 14 qui constitue la surface supérieure du récipient, aucun autre couvercle n'étant nécessaire. Ainsi, si cette surface supérieure 14a présente des aspérités ou des irrégularités de surface, ces dernières risquent d'entraîner des phénomènes de fissuration, par exemple suite à une infiltration de liquide. Pour réaliser le surfaçage de cette surface 14a, un surfaçage manuel est exclu du fait de la radioactivité des déchets enfermés dans les étuis 10, de sorte que cette opération doit pouvoir être effectuée automatiquement avec une commande à distance. Préalablement à l'étape de surfaçage, la coulée du béton 14" à l'intérieur du récipient 12 s'effectue alors que le récipient 12 est assujetti à une table vibrante afin d'éviter toute bulle d'air à l'intérieur du béton. Si, après le remplissage, il est jugé qu'une quantité de béton excédentaire est présente dans le récipient 12, il est prévu alors que, précédemment à l'opération de surfaçage, le récipient 12 passe au niveau d'un poste de raclage qui permet d'enlever le surplus de béton, c'est-à-dire à peu près tout le béton qui dépasse au-delà du bord supérieur 12c du récipient 12.After the concrete has solidified completely, it is the upper surface 14a of this concrete 14 which constitutes the upper surface of the container, no other cover being necessary. Thus, if this upper surface 14a has roughness or surface irregularities, the latter risk causing cracking phenomena, for example following an infiltration of liquid. To carry out the surfacing of this surface 14a, manual surfacing is excluded due to the radioactivity of the waste enclosed in the cases 10, so that this operation must be able to be carried out automatically with a remote control. Prior to the surfacing step, the concrete 14 "is poured inside the container 12 while the container 12 is subjected to a vibrating table in order to avoid any air bubble inside the concrete If, after filling, it is judged that a quantity of excess concrete is present in the container 12, provision is made then that, prior to the surfacing operation, the container 12 passes to a scraping station which makes it possible to remove the excess concrete, that is to say almost all the concrete which protrudes beyond the upper edge 12c of the container 12.
On se reportera maintenant à la figure 2 illustrant de façon schématique le dispositif de surfaçage 20 selon la présente invention, placé dans sa position opérationnelle au-dessus du récipient 12.Reference will now be made to FIG. 2 schematically illustrating the surfacing device 20 according to the present invention, placed in its operational position above the container 12.
Le dispositif de surfaçage 20 présente une partie supérieure 20a correspondant à l'ensemble des éléments de motorisation et de guidage, avantageusement commandés à distance, et qui permettent de réaliser simultanément ou successivement un mouvement de translation verticale et un mouvement de rotation comme il sera décrit ci-après. La partie inférieure 20b du dispositif 20 comprend tous les éléments permettant à la règle d'être correctement positionnée et d'avoir le mouvement le plus approprié pour obtenir, après surfaçage, un état de surface le plus plan possible, c'est-à-dire une surface supérieure 14a du béton la plus lisse possible.The surfacing device 20 has an upper part 20a corresponding to all of the motorization and guiding elements, advantageously remotely controlled, and which allow a vertical translational movement and a rotational movement to be carried out simultaneously or successively as will be described below. The lower part 20b of the device 20 includes all the elements allowing the rule to be correctly positioned and to have the most appropriate movement to obtain, after surfacing, a surface condition as flat as possible, that is to say say an upper surface 14a of the smoothest concrete possible.
Le principe de fonctionnement est le suivant : une règle 22 est placée au-dessus du récipient 12 en regard d'un rayon de son ouverture 12e, la règle ayant une longueur sensiblement égale au rayon intérieur du récipient 12 et ayant un profil spécifique qui sera décrit plus loin. La règle 22 est mise en rotation autour de l'axe Z du récipient 12 tandis que la surface inférieure de la règle est située à quelques millimètres sous la surface 14a du béton de manière à répartir la quantité de béton située au-dessus de ce niveau. Selon le principe du présent dispositif, tandis que la règle 22 est en rotation, celle-ci est remontée verticalement progressivement jusqu'à sortir complètement du béton afin d'obtenir une surface 14a' plane. De manière préférentielle, la remontée de la règle s'effectue en deux temps (ébauche et finition) correspondant respectivement à deux vitesses de rotation successivement rapide (vitesse de travail) et lente (vitesse de finition).The operating principle is as follows: a rule 22 is placed above the container 12 opposite a radius of its opening 12e, the rule having a length substantially equal to the inside radius of the container 12 and having a specific profile which will be described later. The rule 22 is rotated around the axis Z of the container 12 while the bottom surface of the rule is located a few millimeters below the surface 14a of the concrete so as to distribute the quantity of concrete situated above this level. . According to the principle of the present device, while the rule 22 is in rotation, the latter is gradually raised vertically until it leaves completely concrete to obtain a flat surface 14a '. Preferably, the rule is raised in two stages (roughing and finishing) corresponding respectively to two successively fast rotation speeds (working speed) and slow (finishing speed).
Pour permettre ces deux mouvements de la règle 22, le dispositif 20 comprend un ensemble d'éléments formant un ensemble mobile en translation verticale, une partie de cet ensemble mobile 24 formant un sous-ensemble 26 qui est, en outre, mobile en rotation. Comme on peut le voir sur la figure 2, le dispositif 20 comprend, en outre, un carter 28 présentant une partie basse ouverte, disposé de manière fixe essentiellement au-dessus de l'ouverture 12e du récipient 12 dans ladite position opérationnelle illustrée sur la figure 2. Dans ce carter 28 est logé au moins partiellement ledit ensemble mobile 24 muni d'un boîtier 30 mobile en translation verticale par rapport au carter 28 et logeant la partie supérieure du sous-ensemble 26. Le carter 28 et le boîtier 30 forment deux éléments creux mécano-soudés emboîtés l'un dans l'autre.To allow these two movements of the rule 22, the device 20 comprises a set of elements forming a movable assembly in vertical translation, a part of this movable assembly 24 forming a sub-assembly 26 which is, moreover, movable in rotation. As can be seen in FIG. 2, the device 20 further comprises a casing 28 having an open bottom part, fixedly disposed essentially above the opening 12e of the container 12 in said operational position illustrated in the Figure 2. In this housing 28 is housed at least partially said movable assembly 24 provided with a housing 30 movable in vertical translation relative to the housing 28 and housing the upper part of the subassembly 26. The housing 28 and the housing 30 form two hollow mechanically welded elements nested one inside the other.
Afin de permettre le mouvement de translation verticale de l'ensemble mobile 24 par rapport au carter 28, le dispositif comprend des premiers moyens moteurs sous la forme d'un moteur pas-à-pas 32 monté en partie haute dudit carter 28 et ayant un arbre de sortie 34 vertical dont l'extrémité libre 34a est filetée et coopère avec la partie supérieure 30a du boîtier 30 formant écrou. Le carter 28 est prolongé dans sa partie basse par une cloche 36 qui vient refermer, en la couvrant, l'ouverture 12e du récipient 12. Cette cloche 36 constitue ainsi la partie basse du carter formant couvercle du récipient 12, placée au-dessus de la règle 22 et comprenant un bord inférieur circulaire 36a relié à la paroi latérale 12b, des moyens d'étanchéité étant placés entre le bord inférieur 36a de cette partie basse 36 et ladite paroi latérale 12. Dans le mode de réalisation illustré sur la figure 2, le bord inférieur 36a de la cloche 36 présente un diamètre égal à celui du bord supérieur 12c du récipient 12, l'étanchéité étant assurée par un joint d'écrasement annulaire plat 38 compressé entre les bords en regard de la cloche 36 et du récipient 12. On prévoit, en outre, des moyens de centrage dudit carter 28 permettant de placer ce carter 28 en position opérationnelle par rapport au récipient 12 : des cales de centrage 40 assurent cette fonction. Un premier système de guidage assure le mouvement de" translation verticale entre le carter 28 et l'ensemble mobile 24 grâce à la présence d'au moins un palier 42 placé entre la surface intérieure du carter 28 et la surface extérieure du boîtier 30. De préférence, comme illustré sur la figure 2, le dispositif 20 comprend deux paliers 42 situés respectivement en haut et en bas de la partie supérieure 20a du dispositif 20.In order to allow the vertical translational movement of the mobile assembly 24 relative to the casing 28, the device comprises first motor means in the form of a stepping motor 32 mounted in the upper part of said casing 28 and having a vertical output shaft 34 whose free end 34a is threaded and cooperates with the upper part 30a of the housing 30 forming a nut. The casing 28 is extended in its lower part by a bell 36 which closes, by covering it, the opening 12e of the container 12. This bell 36 thus constitutes the lower part of the casing forming the lid of the container 12, placed above the rule 22 and comprising a circular lower edge 36a connected to the side wall 12b, sealing means being placed between the lower edge 36a of this lower part 36 and said side wall 12. In the embodiment illustrated in FIG. 2 , the lower edge 36a of the bell 36 has a diameter equal to that of the upper edge 12c of the container 12, the seal being ensured by a flat annular crushing joint 38 compressed between the facing edges of the bell 36 and of the container 12. Provision is also made for centering means of said casing 28 making it possible to place this casing 28 in an operational position relative to the container 12: centering shims 40 perform this function. A first guide system ensures the movement of " vertical translation between the casing 28 and the movable assembly 24 thanks to the presence of at least one bearing 42 placed between the inner surface of the casing 28 and the outer surface of the housing 30. preferably, as illustrated in FIG. 2, the device 20 comprises two bearings 42 located respectively at the top and bottom of the upper part 20a of the device 20.
Afin d'éviter une quelconque rotation entre le boîtier 30 et le carter 28, une clavette 44 est montée entre ces derniers.In order to avoid any rotation between the housing 30 and the casing 28, a key 44 is mounted between the latter.
Ainsi, sous l'action du moteur pas-à-pas 32, la rotation de l'extrémité libre filetée 34a de l'arbre 34 entraîne la translation verticale du boîtier 30 et de tous les éléments qu'il contient et qui lui sont solidaires. C'est le cas de l'arbre 46 placé verticalement et de façon coaxiale à l'axe Z du récipient 12 dans la position opérationnelle du dispositif 20, la règle 22 étant reliée à la partie inférieure 46b de cet arbre 46 qui pénètre à l'intérieur de la cloche 36 . La partie supérieure 46a de l'arbre 46 est reliée à des moyens de mise en rotation comprenant des deuxièmes moyens moteurs, solidaires du boîtier 30, qui assurent, avec un deuxième système de guidage, un mouvement de rotation entre ledit sous-ensemble 26 et le boîtier 30, l'arbre 46 étant monté rotatif dans le boîtier 30.Thus, under the action of the stepping motor 32, the rotation of the threaded free end 34a of the shaft 34 causes the vertical translation of the housing 30 and of all the elements which it contains and which are integral with it . This is the case of the shaft 46 placed vertically and coaxially with the axis Z of the container 12 in the operational position of the device 20, the rule 22 being connected to the lower part 46b of this shaft 46 which penetrates the inside the bell 36. The upper part 46a of the shaft 46 is connected to rotation means comprising second motor means, integral with the housing 30, which ensure, with a second guide system, a rotational movement between said sub-assembly 26 and the housing 30, the shaft 46 being rotatably mounted in the housing 30.
Les deuxièmes moyens moteurs comprennent un ensemble moto-réducteur 48 composé d'un moteur entraînant un réducteur de vitesse d'axe vertical qui entraîne en rotation un pignon 50 d'axe vertical. Ce pignon 50 engrène avec une roue dentée 52 coaxiale avec ledit arbre 46 et fixée autour de la partie supérieure 46a de cet arbre 46.The second motor means comprise a motor-reduction unit 48 composed of a motor driving a speed reducer with a vertical axis which rotates a pinion 50 with a vertical axis. This pinion 50 meshes with a toothed wheel 52 coaxial with said shaft 46 and fixed around the upper part 46a of this shaft 46.
Cette roue dentée 52 présente un nombre de dents qui aura été déterminé afin d'obtenir le rapport de réduction voulu entre la roue 52 et le pignon 50. Afin de guider en rotation l'arbre 46, on prévoit un deuxième système de guidage comprenant au moins un roulement 54 placé entre ledit arbre 46 et ledit boîtier 30. Selon le mode de réalisation représenté, on a placé deux roulements 54, de préférence des roulements à rouleaux coniques, le long de l'arbre 46. Ces roulements 54 empêchent tout mouvement latéral de l'arbre 46, et de tous les éléments qui lui sont rattachés et qui forment le sous- ensemble 26, par rapport au boîtier 30.This toothed wheel 52 has a number of teeth which will have been determined in order to obtain the desired reduction ratio between the wheel 52 and the pinion 50. In order to guide the shaft 46 in rotation, a second guide system is provided comprising at minus a bearing 54 placed between said shaft 46 and said housing 30. According to the embodiment shown, two bearings 54 were placed, preferably tapered roller bearings, along the shaft 46. These bearings 54 prevent any lateral movement of the shaft 46, and of all the elements which are attached to it and which form the sub-assembly 26, with respect to the housing 30.
De manière avantageuse, le dispositif comprend, en outre, des moyens de détection de la position angulaire dudit sous-ensemble 26 par rapport au boîtier 30 grâce à une couronne de codage 56 fixée sur la roue 52 et portant, à deux hauteurs différentes, des bornes régulièrement réparties sur la circonférence de la couronne 56. Deux détecteurs de proximité inductifs 58 sont placés en regard de la couronne 56 afin de repérer éventuellement le passage d'une borne en regard de l'un des détecteurs 58. Les bornes et les détecteurs 58 forment un ensemble logique permettant de connaître à tout moment le nombre de tours effectués par l'arbre 46, c'est-à-dire par la règle 22.Advantageously, the device further comprises means for detecting the angular position of said sub-assembly 26 relative to the housing 30 by means of a coding ring 56 fixed on the wheel 52 and carrying, at two different heights, terminals regularly distributed over the circumference of the crown 56. Two inductive proximity detectors 58 are placed opposite the crown 56 in order to possibly identify the passage of a terminal opposite one of the detectors 58. The terminals and the detectors 58 form a logical unit making it possible to know at any time the number of turns made by the shaft 46, that is to say by the rule 22.
Si l'on se reporte à la partie inférieure 20b du dispositif 20, la partie inférieure 46b de l'arbre est reliée à un bras 60 horizontal, l'arbre étant centré sur ce bras 60. Une première partie d'extrémité 60a (à gauche sur la figure 2) est reliée, via un système de support, à la règle 22 et la deuxième partie d'extrémité 60b du bras 60 (partie droite de la figure 2) est reliée à un système d'équilibrage sous la forme d'un contrepoids 62 destiné à garantir l'horizontalité du bras 60 afin de maintenir également horizontale la règle 22 sans créer de déséquilibre au niveau de la partie inférieure de l'arbre 46.If we refer to the lower part 20b of the device 20, the lower part 46b of the shaft is connected to a horizontal arm 60, the shaft being centered on this arm 60. A first end part 60a (at left in Figure 2) is connected, via a support system, to the rule 22 and the second end part 60b of the arm 60 (right part of Figure 2) is connected to a balancing system in the form of a counterweight 62 intended to guarantee the horizontality of the arm 60 so as to also keep the rule 22 horizontal without creating an imbalance at the level of the lower part of the shaft 46.
De façon avantageuse, le dispositif 20 comprend également un vibrateur pneumatique 64 destiné à imprimer à la règle 22 un mouvement d'oscillations verticales pendant sa rotation, ces oscillations permettant d'améliorer de façon considérable l'état de surface final du béton 14. Afin d'alimenter en air comprimé le vibrateur 64, depuis le haut de la partie supérieure 20a, on prévoit un circuit d'air comprimé qui arrive au niveau du dispositif 20 par un tube d'alimentation coudé 66 présentant un tronçon amont 66a vertical, en communication de fluide avec une source en air comprimé, traversant la paroi supérieure du carter 28 de façon coulissante et formant une liaison pivot 68 avec la paroi supérieure du boîtier 30.Advantageously, the device 20 also includes a pneumatic vibrator 64 intended to impart to the rule 22 a movement of vertical oscillations during its rotation, these oscillations making it possible to considerably improve the final surface condition of the concrete 14. In order to supply the vibrator 64 with compressed air, from the top of the upper part 20a, a compressed air circuit is provided which arrives at the level of the device 20 by an elbow supply tube 66 having a vertical upstream section 66a, communication of fluid with a compressed air source, passing through the upper wall of the casing 28 so sliding and forming a pivot connection 68 with the upper wall of the housing 30.
Le tronçon aval 66b du tube d'alimentation 66 est relié à un raccord tournant 70 placé de manière coaxiale au-dessus de la partie supérieure 46a de l'arbre 46 qui présente un canal longitudinal 46c débouchant dans la partie basse 46b de l'arbre 46 au niveau d'un tube flexible 72 dont l'autre extrémité est reliée au vibrateur 64.The downstream section 66b of the supply tube 66 is connected to a rotary connector 70 placed coaxially above the upper part 46a of the shaft 46 which has a longitudinal channel 46c opening into the lower part 46b of the shaft 46 at the level of a flexible tube 72, the other end of which is connected to the vibrator 64.
La règle 22 est fixée sous une plaque réglable 74 qui peut coulisser contre une plaque fixe 75, placée au-dessus de la plaque 74, grâce à une vis (non représentée), l'ensemble formant des moyens de réglage de la position radiale de la règle 22 par rapport à l'arbre 46.The rule 22 is fixed under an adjustable plate 74 which can slide against a fixed plate 75, placed above the plate 74, by means of a screw (not shown), the assembly forming means for adjusting the radial position of rule 22 with respect to tree 46.
Le vibrateur 64 est placé au-dessus de la plaque fixe 75 qui est reliée au bras 60 par quatre plots élastiques 76 formant un système d'amortissement destiné à atténuer la transmission des vibrations du vibrateur au reste des éléments du dispositif 20.The vibrator 64 is placed above the fixed plate 75 which is connected to the arm 60 by four elastic studs 76 forming a damping system intended to attenuate the transmission of the vibrations of the vibrator to the rest of the elements of the device 20.
Avant de réaliser l'opération de surfaçage, on affine la position de la règle 22 afin que son extrémité radialement interne 22a soit centrée par rapport à l'ouverture 12e du récipient 12 c'est-à-dire coaxiale à l'axe Z. Cette extrémité radialement interne 22a est munie d'un ergot 78 ou pion placé coaxialement avec l'axe Z du récipient 12 dans la position opérationnelle du dispositif 20, cet ergot 78 faisant saillie vers le bas par rapport à la règle 22. Pendant la première phase de descente dudit ensemble, l'ergot 78 forme une dépression à la surface supérieure 14a du béton, cette dépression étant progressivement comblée par le béton pendant la deuxième phase de remontée de ladite règle 22 de manière à pouvoir utiliser les résidus accumulés au centre de la surface en évitant ainsi la formation d'un picot central de matière qui serait inacceptable.Before carrying out the surfacing operation, the position of the rule 22 is refined so that its radially internal end 22a is centered relative to the opening 12e of the container 12, that is to say coaxial with the axis Z. This radially internal end 22a is provided with a lug 78 or pin placed coaxially with the axis Z of the container 12 in the operational position of the device 20, this lug 78 protruding downward relative to the rule 22. During the first descent phase of said assembly, the lug 78 forms a depression on the upper surface 14a of the concrete, this depression being gradually filled by the concrete during the second ascent phase of said rule 22 so as to be able to use the residues accumulated in the center of the surface thus avoiding the formation of a central spike of material which would be unacceptable.
Concernant la forme de la règle 22, on se reportera plus particulièrement aux figures 3 à 5.Concerning the form of rule 22, reference will be made more particularly to FIGS. 3 to 5.
L'extrémité radialement externe 22b de la règle 22 est quant à elle munie d'un joint de matière élastomère 80 qui prolonge radialement la règle et qui est destinée à venir en contact avec la face interne de la paroi latérale 12b du récipient 12 pour éviter une remontée de matière à ce niveau. La règle 22 présente une portion longitudinale horizontale 22c délimitée par un contour formant un tronçon d'un anneau présentant un rayon intérieur R2 et une largeur d'anneau e. Cette portion horizontale 22c est adjacente à et délimitée par une paroi verticale postérieure 22d.The radially outer end 22b of the rule 22 is itself provided with a seal of elastomeric material 80 which extends the rule radially and which is intended to come into contact with the internal face of the side wall 12b of the container 12 to avoid a rise in material at this level. The rule 22 has a horizontal longitudinal portion 22c delimited by a contour forming a section of a ring having an internal radius R2 and a ring width e. This horizontal portion 22c is adjacent to and delimited by a rear vertical wall 22d.
La portion horizontale 22c est prolongée, en direction de la paroi antérieure 22e verticale, par une portion inclinée 22f, ascendante à partir de la portion horizontale 22c en direction de la paroi latérale de la règle 22 formant la paroi antérieure 22e pendant la rotation de la règle 22. Comme on peut le voir de façon plus précise sur la figure 3, le bord antérieur 22g de la portion inclinée 22f forme une ligne ascendante à partir de l'extrémité radialement interne 22a en direction de l'extrémité radialement externe 22b de la règle, ce bord antérieur 22g formant un arc de cercle de rayon RI en projection horizontale (figure 4) et une ligne droite en projection verticale (figure 3). Le bord postérieur 22h de la portion inclinée 22f, adjacent à la portion horizontale 22c, forme un arc de cercle de rayon R2, R2 étant plus grand que RI.The horizontal portion 22c is extended, in the direction of the vertical front wall 22e, by an inclined portion 22f, ascending from the horizontal portion 22c in the direction of the side wall of the rule 22 forming the front wall 22e during the rotation of the rule 22. As can be seen more precisely in FIG. 3, the anterior edge 22g of the inclined portion 22f forms an ascending line from the radially internal end 22a towards the radially external end 22b of the rule, this front edge 22g forming an arc of a radius RI in horizontal projection (Figure 4) and a straight line in vertical projection (Figure 3). The rear edge 22h of the inclined portion 22f, adjacent to the horizontal portion 22c, forms an arc of a circle of radius R2, R2 being larger than RI.
Ainsi, si l'on se reporte à la figure 6, on s'aperçoit que la règle 22 présente une section transversale en forme de polygone à cinq côtés correspondant à un rectangle dont l'angle, entre la paroi antérieure 22e et la paroi horizontale 22c, est tronqué pour former la portion inclinée 22f.Thus, if we refer to Figure 6, we see that the rule 22 has a cross section in the form of a polygon with five sides corresponding to a rectangle whose angle, between the front wall 22e and the horizontal wall 22c, is truncated to form the inclined portion 22f.
Ainsi, pendant la rotation de la règle 22, dont le sens est indiqué par la flèche de la figure 4, le béton est entraîné du centre de la règle 22 vers sa périphérie de sorte que l'épaisseur du béton excédentaire se trouve rabattue et étalée progressivement, lors de la rotation de la règle, depuis le centre de la surface 14a vers la périphérie de la surface 14a. Le profil très particulier de cet règle 22 a pour but d'homogénéiser les vitesses de défilement relatives entre le centre 22a et la périphérie 22b de la règle 22 par rapport au récipient 12.Thus, during the rotation of the rule 22, the direction of which is indicated by the arrow in FIG. 4, the concrete is entrained from the center of the rule 22 towards its periphery so that the thickness of the excess concrete is folded down and spread out gradually, during the rotation of the rule, from the center of the surface 14a to the periphery of the surface 14a. The purpose of the very particular profile of this rule 22 is to homogenize the relative running speeds between the center 22a and the periphery 22b of the rule 22 relative to the container 12.
Pendant la remontée de la règle 22, celle-ci tourne d'abord à une première vitesse de rotation de l'ensemble moto-réducteur 48, afin de réaliser l'ébauche de la surface 14a, puis on diminue la vitesse de rotation de la règle 22 avant que celle-ci ne soit sortie du béton afin de réaliser une étape de finition sur plusieurs tours de rotation de la règle 22, toujours en rotation avec un mouvement ascendant, afin d'avoir de moins en moins de béton rabattu par la portion inclinée 22f, pour finalement arriver à une position dans laquelle la portion horizontale 22c est affleurante à la surface supérieure plane 14a' du béton.During the ascent of the rule 22, the latter first rotates at a first speed of rotation of the geared motor assembly 48, in order to produce the roughing of the surface 14a, then the speed of rotation of the rule 22 before it comes out of concrete in order to carry out a finishing step on several turns of the rule 22, always rotating with an upward movement, in order to have less and less concrete folded down by the inclined portion 22f, to finally arrive at a position in which the horizontal portion 22c is flush with the planar upper surface 14a 'of the concrete.
Il suffit ensuite de dégager le récipient 12 du dispositif 20 en écartant ces derniers l'un de l'autre pour procéder à l'étape suivante correspondant au séchage du béton 14. De manière préférentielle, le dispositif de surfaçage 20 décrit précédemment est associé à :Then it suffices to release the container 12 from the device 20 by moving the latter apart from one another to proceed to the next step corresponding to the drying of the concrete 14. Preferably, the surfacing device 20 described above is associated with :
- un système de rinçage automatique de la cloche 36 qui permet, entre deux opérations de surfaçage, d'éliminer toutes les salissures et/ou éclaboussures présentes sur la paroi interne de la cloche 36 et sur les éléments tournants présents dans cette cloche, notamment sur la règle de surfaçage 22, et- an automatic rinsing system of the bell 36 which allows, between two surfacing operations, to remove all the dirt and / or splashes present on the internal wall of the bell 36 and on the rotating elements present in this bell, in particular on surfacing rule 22, and
- un système de surveillance à distance comprenant des caméras dont certaines d'entre elles permettent de surveiller l'état de la surface du béton en cours et en fin de lissage ; ce système de télésurveillance permettant à l'opérateur de suivre de manière détaillée le déroulement du procédé de surfaçage afin de le stopper si nécessaire. - a remote monitoring system comprising cameras, some of which make it possible to monitor the condition of the surface of the concrete during and at the end of smoothing; this remote monitoring system allowing the operator to follow in detail the progress of the surfacing process in order to stop it if necessary.

Claims

REVENDICATIONS
1. Dispositif de surfaçage (20) destiné à rendre sensiblement plane la surface supérieure (14a) d'un matériau visqueux (14) contenu dans un récipient (12) présentant un fond (12a) et une paroi latérale (12b) verticale cylindrique dont le bord supérieur" (12c) délimite une ouverture (12e) circulaire, caractérisé en ce qu'il comprend :1. Surfacing device (20) intended to make the upper surface (14a) of a viscous material (14) contained in a container (12) having a bottom (12a) and a vertical cylindrical side wall (12b) substantially flat. the upper edge " (12c) defines a circular opening (12e), characterized in that it comprises:
- un ensemble mobile (24) destiné à être placé dans une position opérationnelle vis-à-vis dudit récipient (12), dans laquelle ledit ensemble (24) est au-dessus de ladite ouverture (12e),a mobile assembly (24) intended to be placed in an operational position with respect to said container (12), in which said assembly (24) is above said opening (12e),
- des premiers moyens moteurs (32) et un premier système de guidage (30a, 34a, 42), assurant un mouvement de translation verticale dudit ensemble (24) par rapport audit récipient (12), et- first motor means (32) and a first guide system (30a, 34a, 42), ensuring a vertical translational movement of said assembly (24) relative to said container (12), and
- des deuxièmes moyens moteurs (48) à vitesse variable et un deuxième système de guidage (54), assurant un mouvement de rotation d'un sous-ensemble (26) mobile appartenant audit ensemble- second variable speed motor means (48) and a second guide system (54), ensuring a rotational movement of a mobile sub-assembly (26) belonging to said assembly
(24), ledit sous-ensemble (26) comportant : un arbre (46) vertical, coaxial avec ladite paroi latérale cylindrique (12b) dans ladite position opérationnelle dudit ensemble(24), said subassembly (26) comprising: a vertical shaft (46), coaxial with said cylindrical side wall (12b) in said operational position of said assembly
(24), la partie supérieure (46a) dudit arbre étant solidaire desdits deuxième moyens moteurs (48), et une règle (22) reliée à la partie inférieure (46b) dudit arbre(24), the upper part (46a) of said shaft being integral with said second motor means (48), and a rule (22) connected to the lower part (46b) of said shaft
(46), de longueur sensiblement égale au rayon de ladite ouverture (12e) et ayant une surface inférieure présentant une portion longitudinale (22c) horizontale destinée à niveler la surface supérieure (14a) du matériau visqueux (14), ladite règle (22) pénétrant dans ladite ouverture (12e) et dans ledit matériau visqueux(46), of length substantially equal to the radius of said opening (12e) and having a lower surface having a longitudinal longitudinal portion (22c) intended to level the upper surface (14a) of the viscous material (14), said rule (22) entering said opening (12e) and said viscous material
(14) lors d'une première phase d'activation des premiers moyens moteurs (32) entraînant la descente dudit ensemble (24), ladite règle(14) during a first phase of activation of the first motor means (32) causing said assembly (24) to descend, said rule
(22) étant mise en rotation lors d'une deuxième phase d'activation des premiers moyens moteurs (32) entraînant la remontée dudit ensemble(22) being rotated during a second phase of activation of the first motor means (32) causing the ascent of said assembly
(24).(24).
2. Dispositif selon la revendication 1, caractérisé en ce que ledit sous-ensemble (26) comporte, en outre, un bras (60) fixé à ladite partie inférieure (46b) de l'arbre et s 'étendant diamétralement au- dessus de ladite ouverture (12e) dans ladite position opérationnelle, une partie d'extrémité (60a) du bras étant reliée à ladite règle (22) et l'autre partie d'extrémité (60b) étant reliée à un système d'équilibrage (62) assurant l'horizontalité de la portion longitudinale (22c) de la surface inférieure de ladite règle (22).2. Device according to claim 1, characterized in that said sub-assembly (26) further comprises an arm (60) fixed to said lower part (46b) of the shaft and extending diametrically au- above said opening (12e) in said operational position, one end part (60a) of the arm being connected to said rule (22) and the other end part (60b) being connected to a balancing system ( 62) ensuring the horizontality of the longitudinal portion (22c) of the lower surface of said rule (22).
3. Dispositif selon la revendication 2, caractérisé en ce que ledit sous-ensemble comporte, en outre, un système vibratoire (64) relié à ladite règle, afin d'ajouter un mouvement d'oscillations verticales à ladite règle (22) pendant sa rotation, et un système d'amortissement (76) placé entre le bras (60) et ladite règle (22) et évitant la transmission de vibrations résultant des oscillations de la règle (22) au reste dudit dispositif.3. Device according to claim 2, characterized in that said sub-assembly further comprises a vibratory system (64) connected to said rule, in order to add a movement of vertical oscillations to said rule (22) during its rotation, and a damping system (76) placed between the arm (60) and said rule (22) and preventing the transmission of vibrations resulting from the oscillations of the rule (22) to the rest of said device.
4. Dispositif selon la revendication 3, caractérisé en ce que ledit système vibratoire comprend un vibrateur pneumatique (64) solidaire de ladite règle (22) et alimenté par un circuit d'air comprimé comportant une source en air comprimé, un tube d'alimentation coudé (66) présentant un tronçon amont (66a) relié à ladite source, un raccord tournant (70) reliant le tronçon aval (66b) dudit tube à la partie supérieure (46a) dudit arbre, un canal longitudinal (46c) traversant de part en part ledit arbre (46) et un tube flexible (72) reliant l'extrémité inférieure dudit canal (46c) audit vibrateur (64) et en ce que ledit système d'amortissement présente des plots élastiques (76).4. Device according to claim 3, characterized in that said vibrating system comprises a pneumatic vibrator (64) integral with said rule (22) and supplied by a compressed air circuit comprising a source of compressed air, a supply tube bent (66) having an upstream section (66a) connected to said source, a rotary connector (70) connecting the downstream section (66b) of said tube to the upper part (46a) of said shaft, a longitudinal channel (46c) passing through in part said shaft (46) and a flexible tube (72) connecting the lower end of said channel (46c) to said vibrator (64) and in that said damping system has elastic pads (76).
5. Dispositif selon la revendication 2, caractérisé en ce que ledit sous-ensemble (26) comporte, en outre, des moyens de réglage5. Device according to claim 2, characterized in that said sub-assembly (26) further comprises adjustment means
(74, 75) de la position radiale de ladite règle (22) par rapport audit arbre (46).(74, 75) of the radial position of said rule (22) relative to said shaft (46).
6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif comprend, en outre, un carter (28) présentant une partie basse (36) ouverte, disposé de manière fixe essentiellement au-dessus de l'ouverture (12e) du récipient (12) dans ladite position opérationnelle et dans lequel est logé au moins partiellement ledit ensemble (24) mobile muni d'un boîtier (30), en ce que la partie supérieure dudit sous-ensemble (26) est logée dans ledit boîtier (30), en ce que lesdits premiers moyens moteurs (32) et ledit premier système de guidage (30a, 34a, 42) assurent le mouvement de translation verticale entre ledit carter (28) et ledit ensemble (24), en ce que lesdits deuxièmes moyens moteurs (48) sont solidaires dudit boîtier (30) de sorte qu'ils assurent, avec ledit deuxième système de guidage (54), un mouvement de rotation entre ledit sous-ensemble (26) et ledit boîtier (30) et en ce que ledit" arbre (46) est monté rotatif dans ledit boîtier (30).6. Device according to any one of the preceding claims, characterized in that said device further comprises a casing (28) having a bottom part (36) open, fixedly disposed essentially above the opening ( 12e) of the container (12) in said operational position and in which is at least partially housed said movable assembly (24) provided with a housing (30), in that the upper part of said subassembly (26) is housed in said housing (30), in that said first drive means (32) and said first guide system (30a, 34a, 42) ensure the vertical translational movement between said casing (28) and said assembly (24), in that said second motor means (48) are integral with said housing (30) so that they ensure, with said second guide system ( 54), a rotational movement between said subassembly (26) and said housing (30) and in that said " shaft (46) is rotatably mounted in said housing (30).
7. Dispositif selon la revendication 6, caractérisé en ce que ledit carter (28) comprend une partie basse (36) formant couvercle dudit conteneur, placée au-dessus de ladite règle (22) et comprenant un bord inférieur circulaire (36a) relié à ladite paroi latérale (12b) et en ce que des moyens d'étanchéité (38) sont placés entre le bord inférieur (36a) de ladite partie basse (36) et ladite paroi latérale (12b).7. Device according to claim 6, characterized in that said casing (28) comprises a bottom part (36) forming a cover of said container, placed above said rule (22) and comprising a circular lower edge (36a) connected to said side wall (12b) and in that sealing means (38) are placed between the lower edge (36a) of said bottom part (36) and said side wall (12b).
8. Dispositif selon la revendication 6, caractérisé en ce qu'il comprend, en outre, des moyens de centrage (40) dudit carter (28) permettant de placer ledit carter (28) en position opérationnelle par rapport audit récipient (12) de sorte que ledit arbre (46) est coaxial à ladite paroi latérale (12b) du récipient (12).8. Device according to claim 6, characterized in that it further comprises centering means (40) of said housing (28) making it possible to place said housing (28) in the operational position relative to said container (12) of so that said shaft (46) is coaxial with said side wall (12b) of the container (12).
9. Dispositif selon la revendication 6, caractérisé en ce qu'il comprend, en outre, des moyens de détection (56, 58) de la position angulaire dudit sous-ensemble (26) par rapport au boîtier (30).9. Device according to claim 6, characterized in that it further comprises detection means (56, 58) of the angular position of said subassembly (26) relative to the housing (30).
10. Dispositif selon la revendication 6, caractérisé en ce que lesdits premiers moyens moteurs comprennent un moteur pas-à-pas (32) monté en partie haute dudit carter et ayant un arbre de sortie (34) vertical dont l'extrémité libre (34a) est filetée et coopère avec la partie supérieure (30a) dudit boîtier (30) formant écrou et en ce que ledit premier système de guidage comporte au moins un palier (42) entre la surface intérieure dudit carter (28) et la surface extérieure dudit boîtier (30).10. Device according to claim 6, characterized in that said first motor means comprise a stepping motor (32) mounted in the upper part of said casing and having a vertical output shaft (34) whose free end (34a ) is threaded and cooperates with the upper part (30a) of said housing (30) forming a nut and in that said first guide system comprises at least one bearing (42) between the interior surface of said housing (28) and the exterior surface of said housing (30).
11. Dispositif selon la revendication 6, caractérisé en ce que ledit sous-ensemble (26) comporte, en outre, une roue dentée coaxiale11. Device according to claim 6, characterized in that said sub-assembly (26) further comprises a coaxial toothed wheel
(52) avec ledit arbre (46) et fixée autour de la partie supérieure (46a) dudit arbre (46), en ce que lesdits deuxièmes moyens moteurs (48) comprennent un moteur entraînant un réducteur de vitesse d'axe vertical qui entraîne en rotation un pignon (50) engrenant avec ladite roue dentée (52) et en ce que ledit deuxième système de guidage comprend au moins un roulement (54) placé entre ledit arbre (46) et ledit boîtier (30).(52) with said shaft (46) and fixed around the upper part (46a) of said shaft (46), in that said second motor means (48) comprise a motor driving a speed reducer of vertical axis which drives in rotation of a pinion (50) meshing with said toothed wheel (52) and in that said second guide system comprises at least one bearing (54) placed between said shaft (46) and said housing (30).
12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite surface inférieure de la règle (22) présente une portion inclinée ascendante (22f), à partir de là" portion horizontale (22c) et en direction d'une paroi latérale de la règle formant paroi antérieure (22e) pendant la rotation de ladite règle (22), le bord antérieur (22g) de la portion inclinée formant une ligne ascendante, à partir de l'extrémité radialement interne (22a) en direction de l'extrémité radialement externe (22b) de ladite règle.12. Device according to any one of the preceding claims, characterized in that said lower surface of the rule (22) has an inclined upward portion (22f), from there " horizontal portion (22c) and in the direction of a side wall of the ruler forming an anterior wall (22e) during the rotation of said ruler (22), the anterior edge (22g) of the inclined portion forming an ascending line, starting from the radially internal end (22a) in the direction of the radially outer end (22b) of said rule.
13. Dispositif selon la revendication 12, caractérisé en ce que ledit bord antérieur (22g) forme un arc de cercle de rayon RI et en ce que ladite portion inclinée (22f) présente un bord postérieur (22h) adjacent à ladite portion horizontale (22c) et formant un arc de cercle de rayon R2>R1.13. Device according to claim 12, characterized in that said front edge (22g) forms a circular arc of radius RI and in that said inclined portion (22f) has a rear edge (22h) adjacent to said horizontal portion (22c ) and forming an arc of radius R2> R1.
14. Dispositif selon la revendication 12, caractérisé en ce que ladite extrémité radialement interne (22a) de ladite règle est centrée par rapport à ladite ouverture et est munie d'un ergot (78) faisant saillie vers le bas et coaxial avec ledit arbre (46), ledit ergot (78) créant, pendant la première phase, une dépression à la surface supérieure (14a) du béton, cette dépression étant progressivement comblée par ledit matériau visqueux pendant la deuxième phase de remontée de ladite règle (22).14. Device according to claim 12, characterized in that said radially internal end (22a) of said rule is centered relative to said opening and is provided with a lug (78) projecting downward and coaxial with said shaft ( 46), said lug (78) creating, during the first phase, a depression on the upper surface (14a) of the concrete, this depression being progressively filled by said viscous material during the second phase of raising of said rule (22).
15. Dispositif selon la revendication 12, caractérisé en ce que l'extrémité radialement externe (22b) de ladite règle est prolongée radialement par un joint de matière élastomère (80) destiné à venir en contact avec la face interne de la paroi latérale (12b) dudit récipient.15. Device according to claim 12, characterized in that the radially external end (22b) of said rule is extended radially by a seal of elastomeric material (80) intended to come into contact with the internal face of the side wall (12b ) of said container.
16. Procédé de surfaçage utilisant le dispositif selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'il comprend les étapes suivantes :16. Surfacing method using the device according to any one of claims 1 to 15, characterized in that it comprises the following steps:
- on positionne ledit dispositif (20) de façon à placer ledit ensemble (24) dans sa position opérationnelle au-dessus de l'ouverture (12e) dudit récipient, l'arbre (46) étant coaxial avec ledit récipient (12), la règle (22) étant au-dessus d'un rayon de ladite ouverture (12e),- Positioning said device (20) so as to place said assembly (24) in its operational position above the opening (12e) of said container, the shaft (46) being coaxial with said container (12), the rule (22) being above a radius of said opening (12e),
- on réalise une première phase pendant laquelle on active lesdits premiers moyens moteurs (32) pour faire descendre ledit ensemble (24) jusqu'à ce que ladite portion longitudinale (22c) de la règle (22) ait pénétré dans ledit matériau visqueux (14), et - on réalise une deuxième phase pendant laquelle on active lesdits deuxièmes moyens moteurs (48) pour mettre en rotation ladite règle (22) et pendant laquelle on active lesdits premiers moyens moteurs (32) pour faire monter ledit ensemble (24) au moins jusqu'à ce que ladite portion longitudinale (12c) de la règle (22) soit sortie du matériau visqueux (14). - a first phase is carried out during which said activates first motor means (32) for lowering said assembly (24) until said longitudinal portion (22c) of the rule (22) has penetrated into said viscous material (14), and - a second phase is carried out during which activating said second motor means (48) to rotate said rule (22) and during which activates said first motor means (32) to raise said assembly (24) at least until said longitudinal portion (12c ) of the rule (22) is out of the viscous material (14).
17. Procédé de surfaçage selon la revendication 16, caractérisé en ce que ladite deuxième phase est une phase pendant laquelle, dans un premier temps, on active lesdits deuxièmes moyens moteurs (48) pour mettre en rotation ladite règle (22) selon une première vitesse de rotation puis, dans un deuxième temps, on active lesdits deuxièmes moyens moteurs (48) pour faire tourner ladite règle (22) selon une deuxième vitesse de rotation, inférieure à ladite première vitesse de rotation.17. surfacing method according to claim 16, characterized in that said second phase is a phase during which, firstly, said second motor means (48) are activated to rotate said rule (22) at a first speed of rotation then, in a second step, said second motor means (48) are activated to rotate said rule (22) according to a second speed of rotation, lower than said first speed of rotation.
18. Utilisation du dispositif de surfaçage selon l'une quelconque des revendications 1 à 15, caractérisée en ce que ledit récipient (12), de préférence en béton, contient ledit matériau visqueux (14), de préférence du béton, et au moins un étui (10) renfermant des déchets contaminés en vue du stockage ultérieur de longue durée et en ce que ledit matériau visqueux (14) a été coulé dans ledit récipient (12) pendant la phase vibratoire d'une table vibrante à accélération verticale sur laquelle ledit récipient (12) est retenu. 18. Use of the surfacing device according to any one of claims 1 to 15, characterized in that said container (12), preferably made of concrete, contains said viscous material (14), preferably concrete, and at least one case (10) containing contaminated waste for long-term subsequent storage and in that said viscous material (14) was poured into said container (12) during the vibratory phase of a vibrating table with vertical acceleration on which said container (12) is retained.
EP99946259A 1998-09-29 1999-09-29 Surfacing device Expired - Lifetime EP1035956B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9812138A FR2783963B1 (en) 1998-09-29 1998-09-29 SURFACING DEVICE
FR9812138 1998-09-29
PCT/FR1999/002313 WO2000018553A1 (en) 1998-09-29 1999-09-29 Surfacing device

Publications (2)

Publication Number Publication Date
EP1035956A1 true EP1035956A1 (en) 2000-09-20
EP1035956B1 EP1035956B1 (en) 2003-11-19

Family

ID=9530947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99946259A Expired - Lifetime EP1035956B1 (en) 1998-09-29 1999-09-29 Surfacing device

Country Status (7)

Country Link
US (1) US6548007B1 (en)
EP (1) EP1035956B1 (en)
JP (1) JP4495345B2 (en)
DE (1) DE69912922T2 (en)
FR (1) FR2783963B1 (en)
RU (1) RU2235639C2 (en)
WO (1) WO2000018553A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8038133B2 (en) * 2007-09-13 2011-10-18 Mcpherson Mathew A Coaxial tube damper
US9360271B1 (en) 2013-03-14 2016-06-07 Mcp Ip, Llc Vibration damper
FR3048117B1 (en) * 2016-02-18 2018-10-05 Innoveox METHOD OF CONDITIONING RADIOACTIVE WASTE, ROBOT AND INSTALLATION THEREFOR
US20170275896A1 (en) * 2016-03-25 2017-09-28 Christopher Valliant Grout Spreader
CN113062558B (en) * 2021-03-30 2022-07-01 浙江悦容建设集团有限公司 High-hardness self-leveling epoxy quartz stone terrace and construction method thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE842777C (en) * 1950-02-07 1952-06-30 Thomas Fa Robert Method and device for the production of panels of all kinds
DE1583528C3 (en) * 1967-10-04 1973-12-13 Badische Maschinenfabrik Gmbh, 7500 Karlsruhe-Durlach Device for guiding a slinger using a template
US3877673A (en) * 1971-08-03 1975-04-15 Pettibone Corp Collapsible pattern for a ladle-lining installation
GB1487833A (en) * 1975-09-30 1977-10-05 Greenan M Method for applying a finishing screed
US4170443A (en) * 1978-08-21 1979-10-09 Becker Conrad R Apparatus for forming sprinkler head protector
SU1201388A1 (en) * 1984-01-04 1985-12-30 Саратовский Ордена Трудового Красного Знамени Политехнический Институт Apparatus for compacting construction materials
IT1188026B (en) * 1985-09-30 1987-12-30 Maurizio Toncelli ROTATING HEAD FOR AUTOMATIC GROUTING OF STONE MATERIALS
JP2650916B2 (en) * 1987-07-29 1997-09-10 蓮太郎 難波 Pressurized contact method between rotating blade iron and wet material
JP2525901B2 (en) * 1989-08-24 1996-08-21 日本碍子株式会社 How to dispose of radioactive waste
US5205669A (en) * 1991-03-22 1993-04-27 Advanced Coatings, Inc. Rotary trowel for troweling polymer/aggregate toppings on substrates
JP2936432B2 (en) * 1991-06-28 1999-08-23 株式会社トキメック Concrete floor finishing machine
FR2693399A1 (en) * 1992-07-09 1994-01-14 Soma Beton Concrete distributing, levelling and finishing device - comprises mechanical members rotatably driven above surface of concrete with members mounted on mobile support with alternate translatory motion above vibrating table carrying moulds
JPH06190811A (en) * 1992-12-25 1994-07-12 Joban Eng:Kk Surface laying-on device of fluid-like matter
US5449406A (en) * 1994-10-24 1995-09-12 Presti, Jr.; Francis A. Grouting machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0018553A1 *

Also Published As

Publication number Publication date
FR2783963B1 (en) 2000-12-15
FR2783963A1 (en) 2000-03-31
RU2235639C2 (en) 2004-09-10
JP4495345B2 (en) 2010-07-07
DE69912922D1 (en) 2003-12-24
EP1035956B1 (en) 2003-11-19
DE69912922T2 (en) 2004-09-02
US6548007B1 (en) 2003-04-15
JP2002525218A (en) 2002-08-13
WO2000018553A1 (en) 2000-04-06

Similar Documents

Publication Publication Date Title
EP0210080B1 (en) Process and installation for manufacturing a hollow part by grinding along a predetermined path
CA1211029A (en) Annular saw tube-cutting apparatus
CH659413A5 (en) DEVICE FOR CUTTING A TUBULAR PART IN RIGID MATERIAL, PARTICULARLY WITH OVALIZED SECTION.
EP1035956B1 (en) Surfacing device
EP2390419A2 (en) Machine and process for inserting columnes in the ground
WO2000016340A1 (en) Method and device for filling drums containing dangerous waste
EP0124464B1 (en) Wire saw for the profile cutting of stone, granite or the like
WO2009007572A1 (en) Rotary device for transferring and indexing metal objects comprising contactless drive means.
FR2884747A1 (en) Cylindrical shaped concrete specimen grinding machine for verifying quality of utilized concrete, has two milling/rectification mullers, each mounted, with respect to rigid main frame, on muller carriage and guided in rotation on carriage
EP0320357B1 (en) Machine for removing spacer wires from nuclear fuel rods
EP0111428A1 (en) Machine to position and weld bottoms and baffles in the wall of a reservoir or cistern
FR2618828A1 (en) Process and equipment for repairing rubbish chutes
EP0114774B1 (en) Loader and unloader for work pieces with a single driving motor
FR2717721A1 (en) Device for welding a sleeve in a nozzle of a circular pipe difficult to access.
EP0639775B1 (en) Device for storing cylindrical objects, with rapid loading and unloading
EP0012655A1 (en) Vehicle for displacing a tool or inspection means supported by a single surface oriented in any direction
EP1225021B1 (en) Dispositif de coulée sous vide
EP1207030B1 (en) Vacuum molding process and corresponding molding installation
EP3138104B1 (en) Device for opening and closing an opening in the bottom of a pool intended for containing irradiated fuel
FR2630665A1 (en) DEVICE FOR TREATMENT BY IMMERSION IN A BATH OF A TUBULAR OBJECT HAVING A FRAGILE OUTER SURFACE
BE1022595A9 (en) DEVICE FOR HANDLING THE EDGE OF A FLOATING GLASS TAPE, INCLUDING AN INCLINED AXIS WHEEL, AND AN INSTALLATION COMPRISING SUCH A DEVICE
FR2517057A1 (en) Grape juice sampling appts. extracts wine must from reception hopper - with inclined elevator screw which expresses juice and returns to hopper
WO2020126460A1 (en) Device and method for lapping workpieces
FR2638667A1 (en) Portable machine tool for machining screw threads extending to the internal periphery of a cylindrical hole
EP1663826A1 (en) Handling device for boxes and the similar

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000602

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20020614

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB LI NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69912922

Country of ref document: DE

Date of ref document: 20031224

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BOVARD AG PATENTANWAELTE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040126

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040820

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20050818

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20050908

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070401

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20070401

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140911

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20140929

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69912922

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150930

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20170914

Year of fee payment: 19

Ref country code: FR

Payment date: 20170929

Year of fee payment: 19

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180929