WO2005082771A1 - Telescopic structure system implemented by a series of screw jacks - Google Patents

Telescopic structure system implemented by a series of screw jacks Download PDF

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Publication number
WO2005082771A1
WO2005082771A1 PCT/FR2005/000251 FR2005000251W WO2005082771A1 WO 2005082771 A1 WO2005082771 A1 WO 2005082771A1 FR 2005000251 W FR2005000251 W FR 2005000251W WO 2005082771 A1 WO2005082771 A1 WO 2005082771A1
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WO
WIPO (PCT)
Prior art keywords
screw
frame
nut
module
flanges
Prior art date
Application number
PCT/FR2005/000251
Other languages
French (fr)
Inventor
Rocco Compagnone
Original Assignee
Rocco Compagnone
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 Rocco Compagnone filed Critical Rocco Compagnone
Publication of WO2005082771A1 publication Critical patent/WO2005082771A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
    • B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2031—Actuator casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2053—Screws in parallel arrangement driven simultaneously with an output member moved by the screws

Definitions

  • the device of the invention makes it possible, from a rotary mechanical energy source, to perform a rectilinear movement movement of large amplitude applied to a load driven in a movement preferably in vertical elevation, or incidentally in horizontal translation.
  • the invention makes it possible in particular to remedy the drawbacks of lifting mechanisms by hydraulic telescopic jacks dependent on the maintenance of the driving pressure in the supply circuit and which poorly ensure the stability of the mass supported in its high position, whereas in many applications, involving the presence of personnel, or even the public on a platform driven in elevation, precise positioning as well as security and stability in fixed positioning are imperative and moreover required by regulations
  • platform lifting devices brought to variable heights, either to constitute a working base of devices being maintained or loaded (aircraft), or to form a set of steps, the platform mobile form in height integrating with other platforms in the equipment of a performance hall.
  • the device of the invention uses passive mechanical support, independent of any source of energy, of a support base, at rest on an upright, formed of an endless screw and the base being formed or integral with a captive nut mounted on the latter.
  • This assembly allows a rigorous control of the command of the positioning of the load (in horizontal thrust, as in vertical rise or fall) thanks to the multiplication decomposition of the rotary movement of the screw in linear movement of the nut; and moreover in vertical displacement, the desired positioning having been reached, the support of the load remains rigorously constant in its resistance to the thrust of gravity, by solid mechanical support against solid of the respective threads of the nut and of the screw .
  • This secondary captive nut can in turn support a tertiary worm receiving a tertiary captive nut, until the final captive nut supporting the molten load.
  • the invention aims to integrate into this system an assembly for transmitting movement from the outside to all of the associated and kinetically integral screws, providing greater reliability, a reduction in manufacturing costs, a simplification of the parts, a reduction in the risk of breakdowns, such as pressure losses in the transmission of forces.
  • the invention aims to limit the negative friction forces linked to angle references between two associated screws; the transmission of the invention operating by simple gears always between rotary members, of the pinion / pinion type.
  • the invention relates to a device for the rectilinear movement of load, of the type comprising a plurality of endless screws, ie a primary endless screw driven in rotation being mounted at its ends on a primary frame and carrying a nut.
  • the secondary screw itself carrying a captive displacement nut longitudinal along the secondary screw and capable of transmitting the thrust of the device on its objective and the device is characterized in that the secondary screw receives its rotational movement from the primary screw via a grooved shaft mounted for rotation parallel to the secondary screw and kinetically integral with the two screws by a set of gears ensuring the transmission of the rotary movement from the primary screw towards the secondary screw throughout the rectilinear and axial movement of said screw secondary carried by its frame, itself driven by the captive nut running along the primary screw.
  • Said splined shaft ensuring the transmission of the rotation of the primary screw towards the secondary screw is mounted on the secondary frame laterally with respect to the secondary screw, and this shaft receives its movement from an upstream pinion, or primary pinion, mounted coaxially on one end of the primary worm and the shaft transmits the torque to the secondary screw by a downstream or secondary pinion mounted coaxially at the end of said secondary screw.
  • the invention also relates to a self-assembling module for producing, by the. combination of identical modules, of a load displacement device, characterized in that it consists of a long, profiled, hollow, prismatic frame, of cross section generally in the shape of a U, formed of two lateral branches joined by a bottom transverse, the frame internally containing a worm and an associated splined drive shaft, arranged parallel to each other and parallel to the walls of the frame, being carried by bearings provided on transverse partitions, the said frame is carrying a captive nut mounted integral with the rear face of the frame, corresponding to the base of the U, and the nut is traversed by a threaded bore, the nut thus being suitable for being mounted on the threaded rod forming the screw without upstream end, belonging to a neighboring module, and driving the displacement of the nut and the integral frame.
  • the U-shaped frame comprises over substantially its entire length two lateral flanges coming from the external wall of its rear face, corresponding to the base of the U, and extending in the opposite direction of the branches of the U, the gap between these two rear flanges being less than the spacing between the two lateral branches of the U, thus allowing the engagement of the paired flanges between the lateral branches of the neighboring frame belonging to a neighboring and upstream module in the direction of the transmission of the movement and the captive nut coming from the module and intended to come to be mounted on the drive worm belonging to the upstream module, is inserted between the two flanges and secured to the latter.
  • the captive nut is in particular made up of a substantially parallelepipedal block, two lateral faces of this block being mounted and secured against the internal faces of said flanges coming from the external wall forming the base of the U constituting the profiled frame.
  • the splined shaft is advantageously disposed laterally and parallel to the worm being inserted between the two flanges and the captive nut extending perpendicularly from the rear face of the profiled frame and integral with the bearing flanges has a through bore for the passage of the said grooved tree extending from one end to the other of the frame.
  • the external faces of the rear flanges and on the other hand the internal faces of the lateral branches of the U-shaped frame include complementary linear reliefs, such as ribs and / or antlers, so that when the rear flanges of a module are engaged between the walls or lateral branches of the upstream module, a rib coming from a wall and engaged in a complementary groove disposed on the opposite wall, ensures by sliding the rib in its corresponding groove the guidance and the integral and parallel maintenance of two assembled modules.
  • the lateral faces of the captive nut and on the other hand the internal walls of the branches of the U-shaped frame have complementary reliefs, such as ribs and / or grooves, so that when the said nut driven by the driving screw coming from the upstream module moves between the walls or lateral branches of the upstream module, a rib coming from a wall and engaged in a complementary groove disposed on the opposite wall, ensures by sliding the rib in its corresponding groove the guide and the straight course of the captive nut within the framework of the neighboring module.
  • FIG. 1 represents a horizontal transverse view of a device with three lifting modules along the section line II of FIG. 7
  • FIG. 3 represents a horizontal cross-sectional view of the same device along the rfl-i ⁇ cutting line or of the HI'-UI 'cutting line of FIG. 7.
  • Figure 4 shows a horizontal cross-sectional view substantially in the middle of Figure 4 and showing only the profiled frames, without the shafts or rotating screws.
  • FIG. 5 represents a vertical section view of a lifting module according to the invention
  • FIG. 6A represents a perspective view of detail of the lifting module of FIG. 5, without the walls of its profiled support frame, and showing the worm its motor splined shaft caught between two transverse partitions forming the upper and lower end pieces closing the hollow profiled frame, as well as the captive nut mounted on the screw
  • FIG. 6B shows the same view with the side walls of the profile partially cut away.
  • FIG. 7 represents a view in vertical section of an elevating device composed of the assembly of three identical modules conforming to the module of FIG. 5, the device being at rest
  • Figures 8A and 8B correspond to Figures 6A and 6B but applying to the three-module lifting device of Figure 7
  • Figure 9 shows the lifting device of Figure 7 in vertical section and seen at an intermediate stage of its upward movement
  • Figure 11 is the same view but at a terminal stage of the vertical deployment movement.
  • FIG. 10 takes up the view of FIG. 8B but showing the device in its intermediate elevation phase as shown in FIG. 9.
  • Figures 12 and 13 show in perspective the isolated detail of the profiles making up the frame walls of the assembled modules, respectively at the same level (Fig. 12) or offset in height (Figure 13), the profiles conforming these frames being slidably engaged between its two neighbors.
  • Figures 14 to 21 show various methods of mounting and assembling lifting devices according to the invention, in particular for the desired leveling of platforms.
  • the device of the invention is based on the preferential use of modules which are identical to each other and self-assemblable to form a lifting assembly, each module of which represents a stage, each multi-stage assembly being able to be combined with other assemblies. multi-stage as seen in Figures 14 and following.
  • a unitary module of the invention is therefore first described below as seen in FIG. 5 or in FIGS. 6A, 6B but also shown in the assembly position in plan views 1 to 4.
  • Each module comprises a elongated framework consisting of a prismatic profiled frame, with a cross section in the general shape of a U and therefore open by one face.
  • This profiled frame 1 thus consists of a face ld forming the base of the U from which the two faces or parallel lateral branches lb and the (figure 4) start; from the outer wall of the face ld forming the bottom of the profiled frame extend two flanges 2a and 2b, parallel to the lateral branches lb and le, and defining between them an open housing (referenced L figure 4), running over the entire length of the frame, the two flanges 2a and 2b are separated by a distance less than the space between the two branches lb and the.
  • these frames can slide one inside the other and for this purpose, to ensure that movement of axial and mutual translation of the profiled frames, while preventing their release, these frames include sets of ribs coming from a frame being engaged in complementary profile grooves provided on the walls opposite the neighboring frame; in the example described the ribs 3a and 3b are arranged on the flanges 2A and 2b being engaged in the grooves 4b and 4c running on the internal walls of the faces lb and forming the lateral branches of the U-shaped frame ( Figures 3 and 4) ;
  • a set of neighboring frames sliding longitudinally relative to one another is thus obtained while remaining mutually captive and therefore parallel, as seen in FIG. 13.
  • the profiled frames 1, l ', In are closed at their two upper and lower ends by end pieces 5 and 6 (FIG. 9 and FIG. 3) formed of solid transverse partitions and of shape complementary to the interior volume of the U-shaped profiled frame 1 , allowing the insertion and securing of the partition between the walls of the bottom ld and side lb and the of the profiled frame 1 by closing it at its ends.
  • nozzles are provided with two neighboring bores 7 and 8 containing the bearings 7a and 8a carrying the axes respectively of an endless screw 9 and a splined shaft 10 extending longitudinally inside the profiled frame.
  • the endless screw 9 is mounted a toothed wheel keyed on the axis of the screw and meshing by its periphery on the parallel and neighboring splined shaft 10, as seen in FIG. 5.
  • the splined driving shaft 10 drives the screw without end 9 via the toothed wheel 11.
  • the rear face or bottom ld of the profiled frame is hollowed out at the appropriate level to allow the passage of the toothed wheel 11 and the kinetic communication of the screw 9, on the splined shaft 10 with which it is associated .
  • the shaft 10 itself receives its movement from an external source, either by gearing on the periphery of the shaft itself, or by a coaxial lower shaft and in engagement on the splined shaft as illustrated in FIGS. 20 and 21.
  • a captive nut 12 is provided, engaged on the endless screw 9. It is here observed and emphasized that the nut engaged on a screw of a module, as seen for example in FIG. 9 or in Figure 5 actually belongs to the downstream neighboring module (in the direction of transmission of the movement) of which it is integral.
  • This nut is formed of a substantially parallelepipedal block of configuration similar to that of the end pieces 5 and 6, but in head to tail position.
  • a narrower portion 12a of the nut 12 is provided to be engaged and secured between the lateral flanges 2a and 2b of the module to which it belongs and of which it is integral.
  • the captive nut 12 ′ (engaged on the worm 9n of the module In) actually belongs to the downstream module F; its thinner end 12a being integral with the flanges 2a and 2b belonging to the profiled frame of the module. This is what allows the ascent of the module 1 ′ raised by the ascent of its nut 12 from the upstream module In, as seen in FIG. 9.
  • the captive nut 12 (FIG. 7) constitutes the coupling of a downstream module mu F and undergoing the lifting or lowering thrust of the upstream worm 9; the latter plays the role of Archimedean screw transforming the rotary movement of the screw in linear translation parallel to the axis of the screw.
  • a plurality of modules can be assembled on the one hand by mutual insertion of their profiled frames, the rear flanges 2a, 2b coming from a downstream frame F being engaged inside the branches or lateral faces 1b, the of the upstream frame In ; on the other hand the captive nut 12 integral with said flanges of the downstream module F is engaged on the worm screw 9 belonging to the upstream module In.
  • the nut is prevented from turning (prisoner), in addition by its section morphology square in its complementary housing, by the ribs 13b and 13c (FIG. 1) coming from the internal walls of lateral faces 1b and the of the profiled frame engaged in the complementary grooves 14b and 14c provided on the nut (FIGS. 1 and 6A) with a light play allowing a free sliding.
  • grooves 13b and 13c coming from said internal walls of the profiled frame participate in the fixing of the end caps 5 and 6, which include notches 15b and 15c designed to receive the force fitting of said grooves 13b and 13c coming from the profiled frame ( Figures 3 and 6A).
  • the captive nut 12 (coming from the downstream module F) has a threaded bore 12b for its engagement on its driving screw 9 (coming from the upstream module In) and in the vicinity the nut prisoner has a second bore with a parallel axis 12c for the free passage of the splined shaft 10 belonging to the downstream module F to which the said nut also belongs.
  • FIGS 7 and following show the combination of three modules, as previously described to make a lifting assembly, applicable for example to the lifting and lowering maneuver of a platform
  • the modules form a motor assembly allowing the transmission of movement from a rotating shaft (for example M in FIGS. 20 and 21) and its transformation into vertical rectilinear movement in the example described (but which can also be a horizontal thrust.)
  • a rotating shaft for example M in FIGS. 20 and 21
  • vertical rectilinear movement in the example described (but which can also be a horizontal thrust.
  • the kinetics of the assembly are simple and can be deduced from FIGS. 7 et seq.
  • the shaft lOn being rotated from the outside, in turn drives the neighboring screw 9n, via the linen toothed wheel. From the rotation of the screw 9n follows the elevation movement of the nut 12 ′ secured by the flanges 2a, 2b of the profiled frame of the downstream module F, which is thus driven in sliding elevation along the frame of the module In.
  • the toothed wheel 1 In of the module In drives the splined shaft 10 'of the module 1', which in turn via the toothed wheel 1 F of the module F turns the worm 9 'and the latter simultaneously causes l raising his own captive nut 12.
  • This nut 12 belongs to module 1, the profiled frame of which is therefore in turn driven in elevation, while the transmission of the rotary movement continues from the gear wheel IF to the splined shaft 10 and beyond by the gear wheel 11 to screw 9, the rotation of which raises the terminal nut 12o.
  • the nut 12o here a terminal and output transmitter of the transmission system could in turn be connected to a new module, the movement continuing and increasing as illustrated in FIGS. 18 and 19 on which the lifting assembly is provided with five combined modules.
  • the number of modules is limited to three and the terminal nut 12o constitutes a rest console for supporting and supporting the load subjected to vertical movement.
  • the lowering movement takes place under the conditions described above, the driving rotation being reversed with respect to the lifting operation.
  • FIGS 14 and following illustrate various arrangements of lifting systems of the invention, each composed of a plurality and preferably of three modules, the systems each constituting a lifting cylinder, and the cylinders being combined, according to appropriate arrangements, in particular symmetrically in order to start again properly and to balance the thrusts in order to obtain either a constant horizontal plane level or possibly the formation of a slope suitable for the load in particular on the ascending plateau.
  • Each module forming a stage is therefore driven in synchronism with the other stages, which represents a multiplication of the final displacement resulting therefrom at the level of the load, therefore a multiplication of the speed of displacement as a function of the number of modules.
  • the final position being obtained and reached, the system is frozen and locked mechanically, independently of any source of power, it can only be moved. by actuation of its motor input.
  • the preferred applications is the vertical movement of working platforms in the high position or the equipment of public rooms for multipurpose uses
  • the device of the invention will be of general application, for any rectilinear movement; it can include an unspecified number of modules; the splined shaft arranged parallel to the worm could alternatively be telescopically hulled in a re-entrant position inside the hollow worm, sliding on the shaft and being driven in rotation at its base by the shaft via an internally engaged crown gear on the said shaft and secured to the base of the screw.
  • the intermediate modules will include the essential elements specified: splined shaft 10, toothed wheel 11, worm 9.
  • the end elements can be adapted; thus the input or downstream module may not include the splined shaft lOn (FIG. 7) if the transmission from the driving source takes place on the axis of the worm 9n, the downstream transmission taking place by the linen gear wheel.
  • the third terminal module T is limited to the prisoner nut 12o, which should belong to the next module, here absent, if the orphan prisoner nut 12o constitutes the support base for the load.
  • the modules can be partially assembled and assembled in the factory and or assembled on site from their component parts or spare parts, assembly being rapid; the captive nuts being mounted and secured, in particular by welding or the like, on their corresponding profiled frame (carrier of the nut and carried by him when the nut moves).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention relates to the field of mechanical units for the displacement of loads. The invention more particularly relates to a device for rectilinear displacement of a load, using a rotary power supply, wherein the device comprises a plurality of endless screws, i.e. either a first endless screw (9n) which is rotationally driven and which is mounted, by the extremities thereof, on a first frame which bears a female nut (12) which is longitudinally displaced along the screw and at least one second endless screw (9') which is borne by a second frame coupled to the female nut, wherein the second screw(9') bears a female nut (12) which is longitudinally displaced along the second screw and which can transmit the thrust of the device onto the objective thereof. The device is characterized in that the second screw (9') receives the rotary movement thereof from the first screw (9n) via a channeled shaft (10') which is rotationally mounted parallel to the first screw (9n) and which is kinetically coupled to the two screws (9' and 9n) by gearing (11n, 11'), resulting in transmission of the rotary movement from the first screw (9n) to the second screw (9') along the entire rectilinear displacement of the secondary screw and frame unit, hauled along the first screw by the female nut coupled to the frame. The invention can be used to install actuating cylinders, particularly for elevating platforms in order to work at heights or for equipment in public multi-purpose halls.

Description

La présente invention concerne le domaine de la mécanique et plus spécialement un dispositif pour le déplacement de charges The present invention relates to the field of mechanics and more specifically a device for moving loads
Le dispositif de l'invention permet à partir d'une source d'énergie mécanique rotative d'effectuer un mouvement de déplacement rectiligne de grande amplitude appliqué à une charge entraînée dans un mouvement préférentiellement d'élévation verticale, ou accessoirement de translation horizontale.The device of the invention makes it possible, from a rotary mechanical energy source, to perform a rectilinear movement movement of large amplitude applied to a load driven in a movement preferably in vertical elevation, or incidentally in horizontal translation.
L'invention permet notamment de remédier aux inconvénients des mécanismes de soulèvement par vérins télescopiques hydrauliques tributaires du maintien de la pression motrice dans le circuit d'alimentation et qui assurent mal la stabilité de la masse supportée dans sa position haute, alors que dans de nombreuses applications, impliquant la présence de personnel, voire du public sur un plateau entraîné en élévation, un positionnement précis de même qu'une sécurité et une stabilité dans le positionnement figé sont impératifs et au demeurant exigés par les règlementsThe invention makes it possible in particular to remedy the drawbacks of lifting mechanisms by hydraulic telescopic jacks dependent on the maintenance of the driving pressure in the supply circuit and which poorly ensure the stability of the mass supported in its high position, whereas in many applications, involving the presence of personnel, or even the public on a platform driven in elevation, precise positioning as well as security and stability in fixed positioning are imperative and moreover required by regulations
Tel est le cas notamment de dispositifs élévateurs de plates-formes amenées à des hauteurs variables, soit pour constituer une base de travail d'appareils en cours de maintenance ou de chargement (aéronefs), soit pour former un ensemble de gradins, la plate-forme mobile en hauteur s'intégrant avec d'autres plates-formes dans l'équipement d'une salle de spectacles.This is the case in particular of platform lifting devices brought to variable heights, either to constitute a working base of devices being maintained or loaded (aircraft), or to form a set of steps, the platform mobile form in height integrating with other platforms in the equipment of a performance hall.
Pour obtenir la stabilité nécessaire, le dispositif de l'invention utilise l'appui mécanique passif et indépendant de toute source d'énergie, d'un socle support, au repos sur un montant, formé d'une vis sans fin et le socle étant formé ou solidaire d'un écrou prisonnier monté sur cette dernière. Ce montage permet un contrôle rigoureux de la commande du positionnement de la charge (en poussée horizontale, comme en élévation ou descente verticale) grâce à la décomposition demultiplicative du mouvement rotatif de la vis en mouvement linéaire de l'écrou ; et de plus en déplacement vertical, le positionnement voulu étant atteint, le supportage de la charge reste rigoureusement constant dans sa résistance à la poussée de la gravité, par appui mécanique solide contre solide des pas de vis respectifs de l'écrou et de la vis. On a décrit dans la demande internationale de brevet WO 95/33 674, au nom du demandeur, un dispositif élévateur de charges constitué d'au moins deux vis sans fin jumelées entraînée en rotation synchrone par un ensemble de transmission commun, une vis primaire portant un écrou primaire supportant une vis secondaire elle-même porteuse d'un écrou prisonnier secondaire.To obtain the necessary stability, the device of the invention uses passive mechanical support, independent of any source of energy, of a support base, at rest on an upright, formed of an endless screw and the base being formed or integral with a captive nut mounted on the latter. This assembly allows a rigorous control of the command of the positioning of the load (in horizontal thrust, as in vertical rise or fall) thanks to the multiplication decomposition of the rotary movement of the screw in linear movement of the nut; and moreover in vertical displacement, the desired positioning having been reached, the support of the load remains rigorously constant in its resistance to the thrust of gravity, by solid mechanical support against solid of the respective threads of the nut and of the screw . There has been described in the international patent application WO 95/33 674, in the name of the applicant, a load lifting device consisting of at least two twin endless screws driven in synchronous rotation by a common transmission assembly, a primary screw carrying a primary nut supporting a secondary screw which itself carries a secondary captive nut.
Cet écrou prisonnier secondaire peut à son tour supporter une vis sans fin tertiaire recevant un écrou prisonnier tertiaire, jusqu'à l'écrou prisonnier final supportant la charge mue. On se réfère à ce document, le dispositif de la présente invention reprenant l'architecture générale des vis sans fin et écrous prisonniers associés tels que prévu dans le brevet précité.This secondary captive nut can in turn support a tertiary worm receiving a tertiary captive nut, until the final captive nut supporting the molten load. Referring to this document, the device of the present invention incorporating the general architecture of the worms and associated captive nuts as provided in the aforementioned patent.
L'invention vise à intégrer dans ce système un ensemble de transmission du mouvement depuis l'extérieur jusqu'à l'ensemble des vis associées et cinétiquement solidaires, apportant une plus grande fiabilité, une réduction des coûts de fabrication, une simplification des pièces, une diminution des risques de pannes, comme des pertes de charges dans la transmission des forces. Notamment l'invention vise à limiter les forces de friction négatives liées à des renvois d'angle entre deux vis associées ; la transmission de l'invention opérant par engrenages simples toujours entre organes rotatifs, du type pignon/pignon.The invention aims to integrate into this system an assembly for transmitting movement from the outside to all of the associated and kinetically integral screws, providing greater reliability, a reduction in manufacturing costs, a simplification of the parts, a reduction in the risk of breakdowns, such as pressure losses in the transmission of forces. In particular, the invention aims to limit the negative friction forces linked to angle references between two associated screws; the transmission of the invention operating by simple gears always between rotary members, of the pinion / pinion type.
A cet effet l'invention concerne un dispositif pour le déplacement rectiligne de charge, du type comportant une pluralité de vis sans fin, soit une vis sans fin primaire entraînée à rotation étant montée par ses extrémités sur un cadre primaire et porteuse d'un écrou prisonnier à déplacement longitudinal le long de la vis, et au moins une vis sans fin secondaire portée par un cadre secondaire solidaire du dit écrou prisonnier et déplacé par le dit écrou, la vis secondaire étant elle-même porteuse d'un écrou prisonnier à déplacement longitudinal le long de la vis secondaire et apte à transmettre la poussée du dispositif sur son objectif et le dispositif est caractérisé en ce que la vis secondaire reçoit son mouvement de rotation de la vis primaire par l'intermédiaire d'un arbre cannelé monté à rotation parallèlement à la vis secondaire et cinétiquement solidaire des deux vis par un jeu d'engrenage en assurant la transmission du mouvement rotatif depuis la vis primaire vers la vis secondaire tout au long du déplacement rectiligne et axial de la dite vis secondaire portée par son cadre, lui-même entraîné par l'écrou prisonnier courant le long de la vis primaire.To this end, the invention relates to a device for the rectilinear movement of load, of the type comprising a plurality of endless screws, ie a primary endless screw driven in rotation being mounted at its ends on a primary frame and carrying a nut. prisoner with longitudinal displacement along the screw, and at least one secondary worm carried by a secondary frame integral with said captive nut and displaced by said nut, the secondary screw itself carrying a captive displacement nut longitudinal along the secondary screw and capable of transmitting the thrust of the device on its objective and the device is characterized in that the secondary screw receives its rotational movement from the primary screw via a grooved shaft mounted for rotation parallel to the secondary screw and kinetically integral with the two screws by a set of gears ensuring the transmission of the rotary movement from the primary screw towards the secondary screw throughout the rectilinear and axial movement of said screw secondary carried by its frame, itself driven by the captive nut running along the primary screw.
Le dit arbre cannelé assurant la transmission de la rotation de la vis primaire vers la vis secondaire est monté sur le cadre secondaire latéralement par rapport à la vis secondaire, et cet arbre reçoit son mouvement d'un pignon amont, ou pignon primaire, monté coaxialement sur une extrémité de la vis sans fin primaire et l'arbre retransmet le couple de rotation à la vis secondaire par un pignon aval ou secondaire monté coaxialement à l'extrémité de la dite vis secondaire.Said splined shaft ensuring the transmission of the rotation of the primary screw towards the secondary screw is mounted on the secondary frame laterally with respect to the secondary screw, and this shaft receives its movement from an upstream pinion, or primary pinion, mounted coaxially on one end of the primary worm and the shaft transmits the torque to the secondary screw by a downstream or secondary pinion mounted coaxially at the end of said secondary screw.
L'invention porte encore sur un module autoassemblable pour la réalisation, par la . combinaison de modules identiques, d'un dispositif de déplacement de charge, caractérisé en ce qu'il est constitué d'un cadre prismatique longiforme, profilé, creux, de section en forme générale de U, formé de deux branches latérales réunies par un fond transversal, le cadre contenant intérieurement une vis sans fin et un arbre cannelé d'entraînement associé, disposés parallèlement l'un à l'autre et parallèlement aux parois du cadre, étant portés par des paliers prévus sur des cloisons transversales, le dit cadre est porteur d'un écrou prisonnier monté solidaire de la face arrière du cadre, correspondant à la base du U, et l'écrou est traversé par un alésage fileté, l'écrou étant ainsi propre à être monté sur la tige filetée formant la vis sans fin amont, appartenant à un module voisin, et motrice du déplacement de l'écrou et du cadre solidaire.The invention also relates to a self-assembling module for producing, by the. combination of identical modules, of a load displacement device, characterized in that it consists of a long, profiled, hollow, prismatic frame, of cross section generally in the shape of a U, formed of two lateral branches joined by a bottom transverse, the frame internally containing a worm and an associated splined drive shaft, arranged parallel to each other and parallel to the walls of the frame, being carried by bearings provided on transverse partitions, the said frame is carrying a captive nut mounted integral with the rear face of the frame, corresponding to the base of the U, and the nut is traversed by a threaded bore, the nut thus being suitable for being mounted on the threaded rod forming the screw without upstream end, belonging to a neighboring module, and driving the displacement of the nut and the integral frame.
Notamment dans le module ci-dessus, le cadre à section en U comporte sur sensiblement toute sa longueur deux flasques latéraux venus de la paroi externe de sa face arrière, correspondant à la base du U, et s'étendant en direction opposée des branches du U, l'interstice entrer ces deux flasques arrière étant inférieur à l 'écartement entre les deux branches latérales du U, permettant ainsi l'engagement des flasques jumelés entre les branches latérales du cadre voisin appartenant à un module voisin et amont dans le sens de la transmission du mouvement et l'écrou prisonnier venu du module et destiné à venir se monter sur la vis sans fin motrice appartenant au module amont, est inséré entre les deux flasques et solidarisé sur ces derniers. L'écrou prisonnier est notamment constitué d'un bloc sensiblement parallélépipédique, deux faces latérales de ce bloc étant montées et solidarisées contre les faces internes des dits flasques venues de la paroi externe formant la base du U constituant le cadre profilé. L'arbre cannelé est avantageusement disposé latéralement et parallèlement à la vis sans fin étant inséré entre les deux flasques et l'écrou prisonnier s'étendant perpendiculairement depuis la face arrière du cadre profilé et solidaire des flasques porteurs comporte un alésage traversant pour le passage du dit arbre cannelé s'étendant d'une extrémité à l'autre du cadre.In particular in the above module, the U-shaped frame comprises over substantially its entire length two lateral flanges coming from the external wall of its rear face, corresponding to the base of the U, and extending in the opposite direction of the branches of the U, the gap between these two rear flanges being less than the spacing between the two lateral branches of the U, thus allowing the engagement of the paired flanges between the lateral branches of the neighboring frame belonging to a neighboring and upstream module in the direction of the transmission of the movement and the captive nut coming from the module and intended to come to be mounted on the drive worm belonging to the upstream module, is inserted between the two flanges and secured to the latter. The captive nut is in particular made up of a substantially parallelepipedal block, two lateral faces of this block being mounted and secured against the internal faces of said flanges coming from the external wall forming the base of the U constituting the profiled frame. The splined shaft is advantageously disposed laterally and parallel to the worm being inserted between the two flanges and the captive nut extending perpendicularly from the rear face of the profiled frame and integral with the bearing flanges has a through bore for the passage of the said grooved tree extending from one end to the other of the frame.
Selon une autre caractéristique, d'une part les faces externes des flasques arrière et d'autre part les faces internes des branches latérales du cadre en U, comportent des reliefs linéaires complémentaires, tels des nervures et/ou ramures, de sorte que lorsque les flasques arrière d'un module sont engagés entre les parois ou branches latérales du module amont, une nervure venue d'une paroi et engagées dans une rainure complémentaire disposée sur la paroi opposée, assure par coulissement de la nervure dans sa rainure correspondante le guidage et le maintien solidaire et parallèle de deux modules assemblés.According to another characteristic, on the one hand the external faces of the rear flanges and on the other hand the internal faces of the lateral branches of the U-shaped frame, include complementary linear reliefs, such as ribs and / or antlers, so that when the rear flanges of a module are engaged between the walls or lateral branches of the upstream module, a rib coming from a wall and engaged in a complementary groove disposed on the opposite wall, ensures by sliding the rib in its corresponding groove the guidance and the integral and parallel maintenance of two assembled modules.
Selon une autre caractéristique, d'une part les faces latérales de l'écrou prisonnier et d'autre part les parois internes des branches du cadre en U, comportent des reliefs complémentaires, tels des nervures et/ou rainures, de sorte que lorsque le dit écrou entraîné par la vis motrice venue du module amont se déplace entre les parois ou branches latérales du module amont, une nervure venue d'une paroi et engagées dans une rainure complémentaire disposée sur la paroi opposée, assure par coulissement de la nervure dans sa rainure correspondante le guidage et la course rectiligne de l'écrou prisonnier dans le cadre du module voisin.According to another characteristic, on the one hand the lateral faces of the captive nut and on the other hand the internal walls of the branches of the U-shaped frame, have complementary reliefs, such as ribs and / or grooves, so that when the said nut driven by the driving screw coming from the upstream module moves between the walls or lateral branches of the upstream module, a rib coming from a wall and engaged in a complementary groove disposed on the opposite wall, ensures by sliding the rib in its corresponding groove the guide and the straight course of the captive nut within the framework of the neighboring module.
L'invention concerne plus généralement un dispositif pour le déplacement de charges et caractérisé en ce qu?il est constitué de l'assemblage d'une pluralité de modules selon les caractéristiques ci-dessus D'autres caractéristiques et avantages de l'invention ressortiront encore de la description qui suit et qui est donnée en référence aux dessins annexés à titre d'illustration d'une forme de réalisation sans caractère limitatif. Dans les dessins annexés : la figure 1 représente une vue en transversale horizontale d'un dispositif à trois modules élévateurs selon la ligne de coupe I-I de la figure 7The invention relates more generally to a device for moving loads and characterized in that ? it consists of the assembly of a plurality of modules according to the above characteristics Other characteristics and advantages of the invention will emerge from the description which follows and which is given with reference to the accompanying drawings by way of illustration of an embodiment without limitation. In the appended drawings: FIG. 1 represents a horizontal transverse view of a device with three lifting modules along the section line II of FIG. 7
La figure 2 représente une vue en coupe transversale horizontale du même dispositif selon la ligne de coupe ïï-ïï de la figure 72 shows a horizontal cross-sectional view of the same device along the section line ïï-ïï of Figure 7
La figure 3 représente une vue en coupe transversale horizontale du même dispositif selon la ligne de coupe rfl-iπ ou de la ligne de coupe HI'-UI' de la figure 7.FIG. 3 represents a horizontal cross-sectional view of the same device along the rfl-iπ cutting line or of the HI'-UI 'cutting line of FIG. 7.
La figure 4 représente une vue coupe transversale horizontale sensiblement au milieu de la figure 4 et ne représentant que les cadres profilés, sans les arbres, ni vis tournantes.Figure 4 shows a horizontal cross-sectional view substantially in the middle of Figure 4 and showing only the profiled frames, without the shafts or rotating screws.
La figure 5 représente une vue en coupe verticale d'un module élévateur selon l'inventionFIG. 5 represents a vertical section view of a lifting module according to the invention
La figure 6 A représente une vue en perspective de détail du module élévateur de la figure 5, sans les parois de son cadre profilé porteur, et montrant la vis sans fin son arbre cannelé moteur pris entre deux cloisons transversales formant les embouts supérieur et inférieur refermant le cadre profilé creux, ainsi que l'écrou prisonnier monté sur la vis, la figure 6B représente la même vue avec les parois latérales du profilé partiellement arrachées.FIG. 6A represents a perspective view of detail of the lifting module of FIG. 5, without the walls of its profiled support frame, and showing the worm its motor splined shaft caught between two transverse partitions forming the upper and lower end pieces closing the hollow profiled frame, as well as the captive nut mounted on the screw, FIG. 6B shows the same view with the side walls of the profile partially cut away.
La figure 7 représente une vue en coupe verticale d'un dispositif élévateur composé de l'assemblage de trois modules identiques conformes au module de la figure 5, le dispositif étant au reposFIG. 7 represents a view in vertical section of an elevating device composed of the assembly of three identical modules conforming to the module of FIG. 5, the device being at rest
Les figures 8A et 8B correspondent aux figures 6A et 6B mais s'appliquant au dispositif élévateur à trois modules de la figure 7 La figure 9 représente le dispositif élévateur de la figure 7 en coupe verticale et vu à un stade intermédiaire de son mouvement ascensionnel, alors que la figure 11 est la même vue mais à un stade terminal du mouvement de déploiement vertical. La figure 10 reprend la vue de la figure 8B mais montrant le dispositif dans sa phase intermédiaire d'élévation comme montré sur la figure 9.Figures 8A and 8B correspond to Figures 6A and 6B but applying to the three-module lifting device of Figure 7 Figure 9 shows the lifting device of Figure 7 in vertical section and seen at an intermediate stage of its upward movement, while Figure 11 is the same view but at a terminal stage of the vertical deployment movement. FIG. 10 takes up the view of FIG. 8B but showing the device in its intermediate elevation phase as shown in FIG. 9.
Les figures 12 et 13 représentent en perspective le détail isolé des profilés composant les parois cadre des modules assemblés, respectivement au même niveau (fig. 12) ou décales en hauteur (figure 13), les profilés conformant ces cadres étant engagés à coulissement entre ses deux voisins.Figures 12 and 13 show in perspective the isolated detail of the profiles making up the frame walls of the assembled modules, respectively at the same level (Fig. 12) or offset in height (Figure 13), the profiles conforming these frames being slidably engaged between its two neighbors.
Les figures 14 à 21 montrent diverses modalités de montage et d'assemblage de dispositifs élévateurs selon l'invention, notamment en vue de la mise à niveau voulu de plates-formes.Figures 14 to 21 show various methods of mounting and assembling lifting devices according to the invention, in particular for the desired leveling of platforms.
Selon l'ensemble des figures, le dispositif de l'invention repose sur l'utilisation préférentielle de modules identiques entre eux et auto assemblables pour conformer un ensemble élévateur dont chaque module réprésente un étage, chaque ensemble pluriétagé pouvant être conjugué avec d'autres ensembles pluriétagés comme vu aux figures 14 et suivantes.According to all of the figures, the device of the invention is based on the preferential use of modules which are identical to each other and self-assemblable to form a lifting assembly, each module of which represents a stage, each multi-stage assembly being able to be combined with other assemblies. multi-stage as seen in Figures 14 and following.
On décrit donc en premier ci-après un module unitaire de l'invention tel que vu à la figure 5 ou à aux figures 6A, 6B mais également représenté en position d'assemblage aux vues en plan 1 à 4.A unitary module of the invention is therefore first described below as seen in FIG. 5 or in FIGS. 6A, 6B but also shown in the assembly position in plan views 1 to 4.
Chaque module comporte une ossature longiforme constituée d'un cadre profilé prismatique, à section en forme générale de U et donc ouvert par une face. Ce cadre profilé 1 est ainsi constitué d'une face ld formant la base du U d'où partent les deux faces ou branches latérales parallèles lb et le (figure 4) ; depuis la paroi extérieure de la face ld formant le fond du cadre profilé s'étendent deux flasques 2a et 2b, parallèles aux branches latérales lb et le, et définissant entre elles un logement (référencé L figure 4) ouvert, courant sur toute la longueur du cadre, les deux flasques 2a et 2b sont séparés d'une distance inférieure à l'espace entre les deux branches lb et le. Cette différence dimensionnelle permet ainsi aux flasques 2a et 2b de s'engager à l'intérieur du volume formé par le cadre voisin par la face ouverte de ce dernier, entre ses deux branches lb et le, comme vu aux figures 1 à 4 notamment ou encore aux vues en perspective 12 et 13. Les cadres assemblés, et emboîtés l'un dans l'autre, comme vu aux figures 1 à 4 ou 12, 13, peuvent coulisser l'un dans l'autre et à cet effet, pour assurer ce mouvement de translation axiale et mutuelle des cadres profilés, tout en empêchant leur dégagement, ces cadres comportent des jeux de nervures venues d'un cadre étant engagées dans des rainures de profil complémentaires prévues sur les parois en regard du cadre voisin ; dans l'exemple décrit les nervures 3a et 3b sont disposées sur les flasques 2A et 2b étant engagées dans les rainures 4b et 4c courant sur les parois internes des faces lb et le formant les branches latérales du cadre en U (figures 3 et 4) ;Each module comprises a elongated framework consisting of a prismatic profiled frame, with a cross section in the general shape of a U and therefore open by one face. This profiled frame 1 thus consists of a face ld forming the base of the U from which the two faces or parallel lateral branches lb and the (figure 4) start; from the outer wall of the face ld forming the bottom of the profiled frame extend two flanges 2a and 2b, parallel to the lateral branches lb and le, and defining between them an open housing (referenced L figure 4), running over the entire length of the frame, the two flanges 2a and 2b are separated by a distance less than the space between the two branches lb and the. This difference dimensional thus allows the flanges 2a and 2b to engage inside the volume formed by the neighboring frame by the open face of the latter, between its two branches lb and the, as seen in Figures 1 to 4 in particular or to perspective views 12 and 13. The assembled frames, and fitted one inside the other, as seen in FIGS. 1 to 4 or 12, 13, can slide one inside the other and for this purpose, to ensure that movement of axial and mutual translation of the profiled frames, while preventing their release, these frames include sets of ribs coming from a frame being engaged in complementary profile grooves provided on the walls opposite the neighboring frame; in the example described the ribs 3a and 3b are arranged on the flanges 2A and 2b being engaged in the grooves 4b and 4c running on the internal walls of the faces lb and forming the lateral branches of the U-shaped frame (Figures 3 and 4) ;
On obtient ainsi un ensemble de cadres voisins coulissants longitudinalement l'un par rapport à l'autre tout en restant mutuellement captifs et donc parallèles, comme on le voit à la figure 13.A set of neighboring frames sliding longitudinally relative to one another is thus obtained while remaining mutually captive and therefore parallel, as seen in FIG. 13.
Les cadres profilés 1, l', In, sont refermés à leurs deux extrémités supérieure et inférieure par des embouts 5 et 6 (figure 9 et figure 3) formés de cloisons transversales pleines et de forme complémentaire du volume intérieur du cadre profilé en U 1, permettant l'insertion et la solidarisation de la cloison entre les parois du fond ld et latérales lb et le du cadre profilé 1 en le refermant à ses extrémités.The profiled frames 1, l ', In, are closed at their two upper and lower ends by end pieces 5 and 6 (FIG. 9 and FIG. 3) formed of solid transverse partitions and of shape complementary to the interior volume of the U-shaped profiled frame 1 , allowing the insertion and securing of the partition between the walls of the bottom ld and side lb and the of the profiled frame 1 by closing it at its ends.
Ces embouts sont prévus avec deux alésages voisins 7 et 8 contenant les paliers 7a et 8a portant les axes respectivement d'une vis sans fin 9 et d'un arbre cannelé 10 s'étendant longitudinalement à l'intérieur du cadre profilé. A une extrémité de. la vis sans fin 9 est montée une roue dentée clavetée sur l'axe de la vis et engrenant par sa périphérie sur l'arbre cannelé parallèle et voisin 10, comme vu sur la figure 5. L'arbre cannelé moteur 10 entraîne la vis sans fin 9 via la roue dentée 11. La face arrière ou fond ld du cadre profilé est évidée au niveau approprié pour permettre le passage de la roue dentée 11 et la communication cinétique de la vis 9, sur l'arbre cannelé 10 auquel elle est associée. L'arbre 10 reçoit lui-même son mouvement d'une source extérieure, soit par engrenage sur la périphérie de l'arbre lui-même, soit par un arbre inférieur coaxial et en prise sur l'arbre cannelé comme illustré aux figures 20 et 21. Pour compléter l'architecture cinétique du module est prévu un écrou prisonnier 12 engagé sur la vis sans fin 9. Il est ici observé et souligné que l'écrou engagé sur une vis d'un module, comme vu par exemple à la figure 9 ou à la figure 5 appartient en réalité au module voisin aval ( dans le sens de la transmission du mouvement) dont il est solidaire.These nozzles are provided with two neighboring bores 7 and 8 containing the bearings 7a and 8a carrying the axes respectively of an endless screw 9 and a splined shaft 10 extending longitudinally inside the profiled frame. At one end of. the endless screw 9 is mounted a toothed wheel keyed on the axis of the screw and meshing by its periphery on the parallel and neighboring splined shaft 10, as seen in FIG. 5. The splined driving shaft 10 drives the screw without end 9 via the toothed wheel 11. The rear face or bottom ld of the profiled frame is hollowed out at the appropriate level to allow the passage of the toothed wheel 11 and the kinetic communication of the screw 9, on the splined shaft 10 with which it is associated . The shaft 10 itself receives its movement from an external source, either by gearing on the periphery of the shaft itself, or by a coaxial lower shaft and in engagement on the splined shaft as illustrated in FIGS. 20 and 21. To complete the kinetic architecture of the module, a captive nut 12 is provided, engaged on the endless screw 9. It is here observed and emphasized that the nut engaged on a screw of a module, as seen for example in FIG. 9 or in Figure 5 actually belongs to the downstream neighboring module (in the direction of transmission of the movement) of which it is integral.
Cet écrou est formé d'un bloc sensiblement parallépipédique de configuration voisine de celle des embouts 5 et 6, mais en position tête bêche. Une portion plus étroite 12a de l'écrou 12 est prévue pour être engagée et solidarisée entre les flasques latérales 2a et 2b du module auquel il appartient et dont il est solidaire. Ainsi sur la figure 7, l'écrou prisonnier 12' (engagé sur la vis sans fin 9n du module In) appartient en réalité au module aval F ; son extrémité plus mince 12a étant solidaire des flasques 2a et 2b appartenant au cadre profilé du module . C'est ce qui permet l'ascension du module 1 ' soulevé par l'ascension de son écrou 12 depuis le module amont In, comme vu sur la figure 9.This nut is formed of a substantially parallelepipedal block of configuration similar to that of the end pieces 5 and 6, but in head to tail position. A narrower portion 12a of the nut 12 is provided to be engaged and secured between the lateral flanges 2a and 2b of the module to which it belongs and of which it is integral. Thus in FIG. 7, the captive nut 12 ′ (engaged on the worm 9n of the module In) actually belongs to the downstream module F; its thinner end 12a being integral with the flanges 2a and 2b belonging to the profiled frame of the module. This is what allows the ascent of the module 1 ′ raised by the ascent of its nut 12 from the upstream module In, as seen in FIG. 9.
Ainsi l'écrou prisonnier 12 (figure 7) constitue l'attelage d'un module aval mu F et subissant la poussée élévatrice ou d'abaissement de la vis sans fin amont 9 ; cette dernière joue le rôle de vis d'Archiméde transformant le mouvement rotatif de la vis en translation linéaire parallèle à l'axe de la vis.Thus the captive nut 12 (FIG. 7) constitutes the coupling of a downstream module mu F and undergoing the lifting or lowering thrust of the upstream worm 9; the latter plays the role of Archimedean screw transforming the rotary movement of the screw in linear translation parallel to the axis of the screw.
Une pluralité de modules peut être assemblée d'une part par insertion mutuelle de leurs cadres profilés, les flasques 2a, 2b arrière venus d'un cadre aval F étant engagées à l'intérieur des branches ou faces latérales lb, le du cadre amont In ; d'autre part l'écrou prisonnier 12 solidaire des dits flasques du module aval F est engagé sur la vis sans fin 9 appartenant au module amont In. De plus l'écrou est empêché de tourner (prisonnier), outre par sa morphologie de section carrée dans son logement complémentaire, par les nervures 13b et 13 c (figure 1) venues des parois internes de faces latérales lb et le du cadre profilé engagé dans les rainures complémentaires 14b et 14c prévues sur l'écrou (figures 1 et 6A) avec un léger jeu permettant un libre coulissement.A plurality of modules can be assembled on the one hand by mutual insertion of their profiled frames, the rear flanges 2a, 2b coming from a downstream frame F being engaged inside the branches or lateral faces 1b, the of the upstream frame In ; on the other hand the captive nut 12 integral with said flanges of the downstream module F is engaged on the worm screw 9 belonging to the upstream module In. In addition, the nut is prevented from turning (prisoner), in addition by its section morphology square in its complementary housing, by the ribs 13b and 13c (FIG. 1) coming from the internal walls of lateral faces 1b and the of the profiled frame engaged in the complementary grooves 14b and 14c provided on the nut (FIGS. 1 and 6A) with a light play allowing a free sliding.
On notera que ces rainures 13b et 13c venues des dites parois internes du cadre profilé participent à la fixation des embouts d'extrémité 5 et 6, lesquels comportent des encoches 15b et 15c prévues pour recevoir l'emboîtement à force des dites rainures 13b et 13c venues du cadre profilé (figures 3 et 6A). On voit selon les figures 1, 5 et 6A notamment que l'écrou prisonnier 12 (venu du module aval F) comporte un alésage fileté 12b pour son engagement sur sa vis motrice 9 (venue du module amont In) et au voisinage l'écrou prisonnier comporte un second alésage d'axe parallèle 12c pour le libre passage de l'arbre cannelé 10 appartenant au module aval F auquel le dit écrou appartient également.It will be noted that these grooves 13b and 13c coming from said internal walls of the profiled frame participate in the fixing of the end caps 5 and 6, which include notches 15b and 15c designed to receive the force fitting of said grooves 13b and 13c coming from the profiled frame (Figures 3 and 6A). We see according to Figures 1, 5 and 6A in particular that the captive nut 12 (coming from the downstream module F) has a threaded bore 12b for its engagement on its driving screw 9 (coming from the upstream module In) and in the vicinity the nut prisoner has a second bore with a parallel axis 12c for the free passage of the splined shaft 10 belonging to the downstream module F to which the said nut also belongs.
Les figures 7 et suivantes montrent la conjugaison de trois modules, tels que précédemment décrits pour réaliser un ensemble élévateur, applicable par exemple à la manœuvre d'élévation et descente d'une plate-formeFigures 7 and following show the combination of three modules, as previously described to make a lifting assembly, applicable for example to the lifting and lowering maneuver of a platform
Ainsi assemblés les modules forment un ensemble moteur permettant la transmission de mouvement depuis un arbre tournant (par exemple M sur les figures 20 et 21) et sa transformation en mouvement rectiligne vertical dans l'exemple décrit (mais pouvant être également une poussée horizontale. )Thus assembled, the modules form a motor assembly allowing the transmission of movement from a rotating shaft (for example M in FIGS. 20 and 21) and its transformation into vertical rectilinear movement in the example described (but which can also be a horizontal thrust.)
La cinétique de l'ensemble est simple et se déduit des figures 7 et suivantes L'arbre lOn étant mu en rotation depuis l'extérieur, entraîne à son tour la vis 9n voisine, via la roue dentée lin. De la rotation de la vis 9n suit le mouvement d'élévation de l'écrou 12' solidaire par les flasques 2a, 2b du cadre profilé du module aval F, lequel est ainsi entraîné en élévation coulissante le long du cadre du module In. Dans le même temps la roue dentée 1 In du module In entraîne l'arbre cannelé 10' du module 1 ', qui à son tour via la roue dentée 1 F du module F fait tourner la vis sans fin 9' et cette dernière provoque simultanément l'élévation de son propre écrou prisonnier 12.The kinetics of the assembly are simple and can be deduced from FIGS. 7 et seq. The shaft lOn being rotated from the outside, in turn drives the neighboring screw 9n, via the linen toothed wheel. From the rotation of the screw 9n follows the elevation movement of the nut 12 ′ secured by the flanges 2a, 2b of the profiled frame of the downstream module F, which is thus driven in sliding elevation along the frame of the module In. In the same time the toothed wheel 1 In of the module In drives the splined shaft 10 'of the module 1', which in turn via the toothed wheel 1 F of the module F turns the worm 9 'and the latter simultaneously causes l raising his own captive nut 12.
Cet écrou 12 appartient au module 1, dont le cadre profilé est donc à son tour entraîné en élévation, tandis que la transmission du mouvement rotatif se poursuit de la roue dentée IF à l'arbre cannelé 10 et au-delà par la roue dentée 11 à la vis 9, dont la rotation fait monter l'écrou terminal 12o.This nut 12 belongs to module 1, the profiled frame of which is therefore in turn driven in elevation, while the transmission of the rotary movement continues from the gear wheel IF to the splined shaft 10 and beyond by the gear wheel 11 to screw 9, the rotation of which raises the terminal nut 12o.
L'écrou 12o, ici réémetteur terminal et de sortie du système de transmission pourrait à son tour être relié à un nouveau module, le mouvement se poursuivant et se multipliant comme illustré sur les figures 18 et 19 sur lesquelles l'ensemble élévateur est prévu avec cinq modules conjugués. Dans les exemples cités et illustrés aux autres figures le nombre de modules est limité à trois et l'écrou terminal 12o constitue console de repos pour l'appui et le supportage de la charge soumise à déplacement vertical.The nut 12o, here a terminal and output transmitter of the transmission system could in turn be connected to a new module, the movement continuing and increasing as illustrated in FIGS. 18 and 19 on which the lifting assembly is provided with five combined modules. In the examples cited and illustrated in the other figures, the number of modules is limited to three and the terminal nut 12o constitutes a rest console for supporting and supporting the load subjected to vertical movement.
Le mouvement de descente s'effectue dans les conditions précédemment décrites, la rotation motrice étant inversée par rapport à la manoeuvre d'élévation.The lowering movement takes place under the conditions described above, the driving rotation being reversed with respect to the lifting operation.
Les figures 14 et suivantes illustrent des montages divers de systèmes élévateurs de l'invention, chacun composé d'une pluralité et de préférence de trois modules, les systèmes constituant chacun un vérin élévateur, et les vérins étant combinés, selon des dispositions appropriées, notamment de façon symétrique afin de repartir convenablement et d'équilibrer les poussées afin d'obtenir soit un niveau plan horizontal constant ou éventuellement la formation d'une pente appropriée à la charge notamment au plateau ascensionnel. On aura noté que le mouvement synchrone des modules l'un par rapport à l'autre est obtenu grâce à l'utilisation nouvelle d'une transmission par arbre cannelé ; lequel présente l'avantage de permettre et d'offrir une prise permanente à une pièce engrenée, telle une roue dentée, tout au long de sa génératrice, de sorte que le module aval grimpant le long du module amont reste cependant constamment entraîné et en prise par son arbre cannelé associé, faisant fonction d'organe de transmission ; la rotation induite de la vis du module aval étant à son tour transmise à l'arbre cannelé de l'étage suivant permet encore à cet étage de recevoir la force motrice.Figures 14 and following illustrate various arrangements of lifting systems of the invention, each composed of a plurality and preferably of three modules, the systems each constituting a lifting cylinder, and the cylinders being combined, according to appropriate arrangements, in particular symmetrically in order to start again properly and to balance the thrusts in order to obtain either a constant horizontal plane level or possibly the formation of a slope suitable for the load in particular on the ascending plateau. It will have been noted that the synchronous movement of the modules with respect to one another is obtained thanks to the new use of a transmission by splined shaft; which has the advantage of allowing and offering a permanent grip to a geared part, such as a toothed wheel, all along its generator, so that the downstream module climbing along the upstream module remains constantly driven and engaged by its associated splined shaft, acting as a transmission organ; the induced rotation of the screw of the downstream module being in turn transmitted to the splined shaft of the next stage still allows this stage to receive the driving force.
Chaque module formant un étage est donc entraîné en synchronisme avec les autres étages, ce qui représente une multiplication du déplacement final en résultant au niveau de la charge, donc une multiplication de la vitesse de déplacement en fonction du nombre de modules. La position finale étant obtenue et atteinte, le système est figé et bloqué mécaniquement, indépendamment de toute source de puissance, il ne peut être déplacé que . par mise en actionnement de son entrée motrice. Parmi les applications préférentielles figure le déplacement vertical de plates-formes de travail en position haute ou l'équipement de salles publiques à utilisations polyvalentesEach module forming a stage is therefore driven in synchronism with the other stages, which represents a multiplication of the final displacement resulting therefrom at the level of the load, therefore a multiplication of the speed of displacement as a function of the number of modules. The final position being obtained and reached, the system is frozen and locked mechanically, independently of any source of power, it can only be moved. by actuation of its motor input. Among the preferred applications is the vertical movement of working platforms in the high position or the equipment of public rooms for multipurpose uses
Il reste que le dispositif de l'invention sera d'application générale, pour tout déplacement rectiligne ; il peut comporter un nombre indéterminé de modules ; l'arbre cannelé disposé parallèlement à la vis sans fin pourrait en variante être mondé télescopiquement en position rentrante à l'intérieur la vis sans fin creuse, coulissant sur l'arbre et étant entraînée en rotation à sa base par l'arbre via une couronne à denture intérieure en prise sur le dit arbre et solidaire de la base de la vis.The fact remains that the device of the invention will be of general application, for any rectilinear movement; it can include an unspecified number of modules; the splined shaft arranged parallel to the worm could alternatively be telescopically hulled in a re-entrant position inside the hollow worm, sliding on the shaft and being driven in rotation at its base by the shaft via an internally engaged crown gear on the said shaft and secured to the base of the screw.
Dans un ensemble de modules tel que décrit, il est compris que seuls les modules intermédiaires comprendront les éléments essentiels spécifiés : arbre cannelé 10, roue dentée 11, vis sans fin 9. Les éléments d'extrémité pourront être adaptés ; ainsi le module d'entrée ou aval peut ne pas comporter l'arbre cannelé lOn (figure 7) si la transmission depuis la source motrice se fait sur l'axe de la vis sans fin 9n, la transmission vers l'aval s'opérant par la roue dentée lin. Le troisième module terminal T est limité à l'écrou prisonnier 12o, qui devrait appartenir au module suivant, ici absent, si l'écrou prisonnier 12o orphelin constitue le socle support de la charge. Les modules peuvent être montés et assemblés partiellement en usine et ou montés sur place à partir de leurs éléments composants ou pièces détachées, l'assemblage étant rapide ; les écrous prisonniers étant montés et solidarisés, notamment par soudure ou analogue, sur leur cadre profilé correspondant (porteur de l'écrou et porté par lui lorsque l'écrou se déplace).In a set of modules as described, it is understood that only the intermediate modules will include the essential elements specified: splined shaft 10, toothed wheel 11, worm 9. The end elements can be adapted; thus the input or downstream module may not include the splined shaft lOn (FIG. 7) if the transmission from the driving source takes place on the axis of the worm 9n, the downstream transmission taking place by the linen gear wheel. The third terminal module T is limited to the prisoner nut 12o, which should belong to the next module, here absent, if the orphan prisoner nut 12o constitutes the support base for the load. The modules can be partially assembled and assembled in the factory and or assembled on site from their component parts or spare parts, assembly being rapid; the captive nuts being mounted and secured, in particular by welding or the like, on their corresponding profiled frame (carrier of the nut and carried by him when the nut moves).
La description qui précède n'a été donnée qu'à titre d'exemple et l'on pourra à partir des éléments décrits en dériver des variantes et applications sans sortir des limites de l'invention. The foregoing description has been given by way of example only and it will be possible, from the elements described, to derive variants and applications thereof without departing from the limits of the invention.

Claims

IŒVENDICATIONSIŒVENDICATIONS
1 - Dispositif pour le déplacement rectiligne de charge, du type comportant une pluralité de vis sans fin, soit une vis sans fin primaire (9n) entraînée à rotation étant montée par ses extrémités sur un cadre primaire et porteuse d'un écrou prisonnier 12' à déplacement longitudinal le long de la vis et au moins une vis sans fin secondaire (9') portée par un cadre secondaire solidaire du dit écrou prisonnier, la vis secondaire (9') étant elle-même porteuse d'un écrou prisonnier (12) à déplacement longitudinal le long de la vis secondaire et apte à transmettre la poussée du dispositif sur son objectif et le dispositif est caractérisé en ce que la vis secondaire (9')reçoit son mouvement de rotation depuis la vis primaire (9n) par l'intermédiaire d'un arbre cannelé (10') monté à rotation parallèlement à la vis secondaire (9') et cinétiquement solidaire des deux vis (9' et 9n) par un jeu d'engrenage (1 In, 1 F) en assurant la transmission du mouvement rotatif depuis la vis primaire (9n) vers la vis secondaire (9') tout au long du déplacement rectiligne de l'ensemble vis secondaire portée par son cadre solidaire de l'écrou prisonnier (12') courant le long de la vis primaire.1 - Device for the rectilinear movement of load, of the type comprising a plurality of endless screws, ie a primary endless screw (9n) driven in rotation being mounted by its ends on a primary frame and carrying a captive nut 12 ' with longitudinal displacement along the screw and at least one secondary endless screw (9 ') carried by a secondary frame secured to said captive nut, the secondary screw (9') itself carrying a captive nut (12 ) with longitudinal displacement along the secondary screw and capable of transmitting the thrust of the device on its objective and the device is characterized in that the secondary screw (9 ') receives its rotational movement from the primary screw (9n) by l 'intermediate a splined shaft (10') rotatably mounted parallel to the secondary screw (9 ') and kinetically integral with the two screws (9' and 9n) by a gear set (1 In, 1 F) ensuring transmission of rotary motion from the primary screw (9n) to the secondary screw (9 ') throughout the rectilinear movement of the secondary screw assembly carried by its frame secured to the captive nut (12') running along the primary screw.
2 - Dispositif selon la revendication 1 caractérisé en ce que le dit arbre cannelé (10') assurant la transmission de la rotation de la vis primaire (9n) vers la vis secondaire (9') est monté sur le cadre secondaire (F) latéralement par rapport à la vis secondaire, et cet arbre reçoit son mouvement d'une roue dentée amont (1 In), montée coaxialement et claveté sur une extrémité de la vis sans fin primaire (9n) et l'arbre cannelé retransmet le couple de rotation à la vis secondaire (9') par une roue dentée (11 ') ou secondaire monté coaxialement et clavetée à l'extrémité de l'axe de la dite vis secondaire.2 - Device according to claim 1 characterized in that said splined shaft (10 ') ensuring the transmission of the rotation of the primary screw (9n) to the secondary screw (9') is mounted on the secondary frame (F) laterally relative to the secondary screw, and this shaft receives its movement from an upstream toothed wheel (1 In), mounted coaxially and keyed on one end of the primary worm (9n) and the splined shaft retransmits the torque to the secondary screw (9 ') by a toothed wheel (11') or secondary mounted coaxially and keyed at the end of the axis of said secondary screw.
3- Module autoassemblable pour la réalisation, par la combinaison de modules identiques, d'un dispositif de déplacement de charge conforme à la revendication 1, caractérisé en ce qu'il est constitué d'un cadre prismatique profilé longiforme (1), creux, de section en forme générale de U, contenant intérieurement une vis sans fin (9) et un arbre cannelé d'entraînement associé (10) et disposés parallèlement l'un à l'autre étant porté par des paliers (7a, 7b, 8a, 8b) prévus sur des cloisons transversales (5 et 6), le dit cadre est porteur d'un écrou prisonnier (12) monté solidaire de la face arrière du cadre, correspondant à la base du U, et l'écrou est traversé par un alésage fileté (12b), l'écrou étant ainsi propre à être monté sur la tige filetée formant la vis sans fin amont, appartenant à un module voisin, et motrice du déplacement de l'écrou .3- Self-assembling module for the realization, by the combination of identical modules, of a load displacement device according to claim 1, characterized in that it consists of a prismatic frame with long, profiled profile (1), hollow, of general U-shaped section, internally containing an endless screw (9) and an associated splined drive shaft (10) and arranged parallel to each other being carried by bearings (7a, 7b, 8a, 8b) provided on transverse partitions (5 and 6), said frame carries a captive nut (12) mounted integral with the rear face of the frame, corresponding to the base of the U, and the nut is crossed by a threaded bore (12b), nut thus being suitable for being mounted on the threaded rod forming the upstream endless screw, belonging to a neighboring module, and driving the displacement of the nut.
4 -Module selon la revendication 3 et caractérisé en ce que le cadre à section en U comporte sur sensiblement toute sa longueur deux flasques latérales (2a,' 2b) venus de sa face arrière (ld), correspondant à la base du U, et s'étendant en direction opposée des branches (lb, le) du U, l'interstice entrer ces deux flasques arrière étant inférieur à l 'écarte ent entre les deux branches (lb, le) du U, permettant ainsi l'engagement des flasques jumelées (2a, 2b) entre les branches (lb, le) du cadre voisin appartenant à un module voisin et amont dans le sens de la transmission du mouvement et l'écrou prisonnier destiné à venir se monter sur la vis sans fin motrice appartenant au dit module amont, est monté solidaire de son cadre correspondant étant inséré entre les deux flasques (2a, 2b) et solidarisé sur ces derniers à proximité de la base du cadre4 -Module according to claim 3 and characterized in that the U-section frame comprises over substantially its entire length two lateral flanges (2a, ' 2b) coming from its rear face (ld), corresponding to the base of the U, and extending in the opposite direction of the branches (lb, le) of the U, the gap between these two rear flanges being less than the distance between the two branches (lb, le) of the U, thus allowing the engagement of the flanges twinned (2a, 2b) between the branches (lb, le) of the neighboring frame belonging to a neighboring and upstream module in the direction of transmission of the movement and the captive nut intended to come to be mounted on the driving worm belonging to said upstream module, is mounted integral with its corresponding frame being inserted between the two flanges (2a, 2b) and secured on the latter near the base of the frame
5- Module selon la revendication 4, caractérisé en ce que l'écrou prisonnier est constitué d'un bloc sensiblement parallélépipédique, deux faces latérales de ce bloc étant montées et solidarisées contre les faces internes des dites flasques (2a, 2b)5- Module according to claim 4, characterized in that the captive nut consists of a substantially parallelepipedal block, two lateral faces of this block being mounted and secured against the internal faces of said flanges (2a, 2b)
6- Module selon la revendication 5, caractérisé en ce que l'arbre cannelé (10) est disposé latéralement et parallèlement à la vis sans fin (9) étant inséré entre les deux flasques (2a, 2b) et l'écrou prisonnier s'étendant depuis la face arrière du cadre profilé et solidaire des flasques porteurs comporte un alésage (12c) traversant pour le passage du dit arbre cannelé s'étendant d'une extrémité à l'autre du cadre.6- Module according to claim 5, characterized in that the splined shaft (10) is arranged laterally and parallel to the worm (9) being inserted between the two flanges (2a, 2b) and the captive nut s' extending from the rear face of the profiled frame and integral with the bearing flanges comprises a through bore (12c) for the passage of said grooved shaft extending from one end to the other of the frame.
7 - Module selon l'une des revendications 3 à 6, caractérisé en ce d'une part les faces externes des flasques arrière (2a, 2b) et d'autre part les faces internes des branches latérales (lb, le) du cadre en U, comportent des reliefs linéaires, tels des nervures et/ou rainure, de sorte que lorsque les flasques arrière d'un ensemble modulaire sont engagés entre les parois ou branches latérales du module amont, une nervure (3a, 3b) venue d'une paroi et engagée dans une rainure (4b, 4c) complémentaire disposée sur la paroi opposée, assure par coulissement de la nervure dans sa rainure correspondante le guidage et le maintien solidaire et parallèle de deux ensembles modulaires assemblés. 8- Module selon l'une des revendications 5 à 7, caractérisé en ce d'une part les faces latérales de l'écrou, prisonnier et d'autre part les parois internes des branches (lb, le) du cadre en U, comportent des reliefs linéaires, tels des nervures et ou rainure, de sorte que lorsque le dit écrou est engagé à déplacement sur la vis motrice venue du module amont et se déplace entre les parois ou branches latérales du module amont, une nervure (13b, 13c) venue d'une paroi et engagées dans une rainure complémentaire (14b, 14c) disposée sur la paroi opposée, assure par coulissement de la nervure dans sa ramure correspondante le guidage et la course rectiligne de l'écrou prisonnier dans le cadre du module voisin.7 - Module according to one of claims 3 to 6, characterized in that on the one hand the external faces of the rear flanges (2a, 2b) and on the other hand the internal faces of the lateral branches (lb, the) of the frame in U, have linear reliefs, such as ribs and / or groove, so that when the rear flanges of a modular assembly are engaged between the walls or lateral branches of the upstream module, a rib (3a, 3b) coming from a wall and engaged in a complementary groove (4b, 4c) disposed on the opposite wall, ensures by sliding the rib in its corresponding groove the guiding and the integral and parallel maintenance of two assembled modular assemblies. 8- Module according to one of claims 5 to 7, characterized in that on the one hand the lateral faces of the nut, captive and on the other hand the internal walls of the branches (lb, the) of the U-shaped frame, comprise linear reliefs, such as ribs and or groove, so that when said nut is engaged in displacement on the driving screw coming from the upstream module and moves between the walls or lateral branches of the upstream module, a rib (13b, 13c) coming from a wall and engaged in a complementary groove (14b, 14c) disposed on the opposite wall, ensures by sliding the rib in its corresponding groove the guidance and the straight stroke of the captive nut within the framework of the neighboring module.
9 - Dispositif pour le déplacement de charges selon la revendication 1 et caractérisé en ce qu'il est constitué de l'assemblage d'une pluralité de modules selon l'une des revendications 3 à 8 ci-dessus9 - Device for moving loads according to claim 1 and characterized in that it consists of the assembly of a plurality of modules according to one of claims 3 to 8 above
10 - Dispositif pour le déplacement de charges selon la revendication 1 et caractérisé en ce que l'arbre cannelé est mondé télescopiquement en position rentrante à l'intérieur de la vis sans fin creuse et coulissant sur l'arbre, la vis étant entraînée en rotation à sa base par l'arbre via une couronne à denture intérieure en prise sur le dit arbre, et solidaire de la base de la vis. 10 - Device for moving loads according to claim 1 and characterized in that the splined shaft is telescopically hulled in a re-entrant position inside the hollow worm and sliding on the shaft, the screw being driven in rotation at its base by the shaft via a crown with internal toothing engaged on said shaft, and integral with the base of the screw.
PCT/FR2005/000251 2004-02-10 2005-02-04 Telescopic structure system implemented by a series of screw jacks WO2005082771A1 (en)

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FR0401245A FR2866020B1 (en) 2004-02-10 2004-02-10 SYSTEM OF TELESCOPIC STRUCTURES IMPLEMENTED BY SCREW VERSION SERIES

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US9970387B2 (en) 2007-08-08 2018-05-15 Rohr, Inc. Variable area fan nozzle with bypass flow
US9759087B2 (en) 2007-08-08 2017-09-12 Rohr, Inc. Translating variable area fan nozzle providing an upstream bypass flow exit
US8511062B2 (en) 2007-08-08 2013-08-20 Rohr, Inc. Actuation system for a translating variable area fan nozzle
US8402765B2 (en) 2007-08-08 2013-03-26 Rohr, Inc. Translating variable area fan nozzle providing an upstream bypass flow exit
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CN114436149A (en) * 2022-04-11 2022-05-06 西安星通通信科技有限公司 Automatic lifting system for antenna installation
CN116329841A (en) * 2023-04-12 2023-06-27 山东辉腾防腐设备有限公司 Welding device for processing steel lining tetrafluoro storage tank
CN116329841B (en) * 2023-04-12 2024-05-10 山东辉腾防腐设备有限公司 Welding device for processing steel lining tetrafluoro storage tank

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