Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
  • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
  • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
  • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

Definitions

• the invention relates to a hoist device and more particularly to a hoist device whose installation can be carried out in any type of construction and any location in said construction.
• freight elevators for example freight elevators as described in French patent application No. 0305880.
• This type of freight elevator is intended to be installed in a construction in order to move loads of one stage to another using a platform-type lifting device or nacelle cooperating by sliding with a guidance system.
• This type of freight elevator imposes a number of constraints both for its installation and for its use.
• the stop positions of the lifting platform generally correspond to the respective floors of the floors served by the said platform or at the levels defined during the installation only according to said possible access points offered by said space.
• Known lifts also require multiple and laborious assembly operations, in particular the attachment of the lifting platform guidance system on the construction and installation of means ensuring cooperation between said guidance system and the platform.
• this space is not always secure and does not limit access to the path of the lifting platform, a user may be in danger by having access to said path.
• the invention therefore aims to allow the installation of a hoist device regardless of the type of construction, regardless of the internal configuration of said construction, the installation being stable, simple, secure and easily accessible.
• the invention relates to a hoist device comprising a lifting support, a drive means capable of vertically translating the lifting support, a means for guiding said support in translation and a structure in which is mounted the means of guiding, the structure forming a rigid unitary unit, characterized in that the structure comprises an internal space in which evolves in vertical translation of the lifting support and in that the guide means is formed of at least one bar integrated in the rigid structure, in particular in the same plane as one of the sides of the rigid structure, said bar being part of the elements constituting the rigid structure.
• the incorporation of the hoist device of the invention in a construction is ensured by the fixing of said unitary structure, in particular by its lower and upper ends respectively at the floor and the ceiling of the construction.
• Such a rigid structure according to the invention allows to install the elevator device regardless of the location of the construction. It is not necessary to install the guiding device in a space provided or made for this purpose, the rigid structure of the invention not needing a lateral support support or complex fixation, such as in the prior art where the guide system must be mounted on one or more walls.
• the rigid structure according to the invention comprises the guide system, directly integrated in said structure and therefore without having to be reported by mounting on the latter.
• the structure according to the invention therefore provides, in itself, a hoist device independent of any enclosed space that it is necessary to have in the prior art, as delimited by wall walls, to guide the lifting support.
• the structure according to the invention is transportable.
• the device is easily moved from one place to another. Once attached to the floor and integrated into the ceiling, it is ready for use. It is possible to install casters on the structure according to the invention to facilitate its transport. Such wheels are preferably removable.
• this structure can directly integrate the drive means.
• the drive means is electrically powered, preferably by being directly connected to an electrical outlet connected to the mains.
• the structure is advantageously fixedly mounted in the construction by clamping for example between two planes of said construction, that is to say for example by inserting in force the amounts constituting the structure between two parallel reception surfaces, one said upper and the other said lower than are respectively the ceiling and the floor of a building floor.
• This clamping can also be achieved by blocking the structure in the thickness of the hole of the ceiling provided for passing the load elevator to the upper floor, said hole then being made so that the rigid structure is surrounded and blocked in displacement by the thickness of the ceiling.
• the term "upper surface” means the surface of the ceiling or the thickness of said ceiling.
• the rigid structure is formed of sections assembled together and constituting amounts and sleepers of identical shapes. These profiles are of the tubular elements type.
• This embodiment of the structure offers a modularity and ease of assembly, the profiles forming both the sleepers and uprights, are simply cut to the desired size to achieve the structure. It is thus possible to produce devices according to the invention of any size adapted to the needs of a user, the dimensions of the device being defined with respect to the space or volume of the room in which it is integrated.
• a device according to the invention can provide for moving loads ranging for example up to 300 or 400 Kg in an industrial or domestic type application.
• the profiles comprise at least two faces, in particular opposite faces, each provided with a longitudinal groove.
• the profiles comprise on each face identical longitudinal grooves, these grooves used for mounting different profiles between them, guide rail or the assembly of cladding panels and protection for the rigid structure.
• Each profile may also include a number of grooves adapted to the intended use of said profile.
• a profile used to form a corner post of the structure advantageously comprises at least two grooves located on consecutive faces while a profile used to form a crossbar connecting two consecutive corner posts has two grooves on the faces opposite, one on the lower face and the other on the upper face.
• the guidance system advantageously is composed of profiles identical to those forming the rigid structure.
• the guidance system can be integrated into the structure in the same way as the amounts and the cross members that compose it.
• Such profiles have a hollow interior passage, allowing in particular the passage of electrical cables or facilitating their assembly between them.
• the profiles are mounted together using complementary mounting means internal to said rigid structure.
• These mounting means cooperate in this internal volume delimited by the rigid structure, without protruding out of the device according to the invention and not likely to cause accidents by snagging or otherwise.
• the device comprises protection panels made integral with the sections so as to constitute an enclosure, the latter being closed with delimited openings corresponding to the access areas.
• Said panels are integrated in the rigid structure, without requiring the use of a particular fastening system.
• these panels are integrated by cooperating with the ribs present on the profiles, that is to say that the panels are slid simultaneously into two grooves vis-à-vis the structure and are held in position by them.
• This installation mode of the panels avoids the use of a large number of screws and nuts or other means of fixing the prior art or the panels are reported and fixed directly on the outer faces of the structures.
• the panels block access to the internal volume of the rigid structure with the exception of said access areas.
• Such access areas are formed by leaving one or more openings without panels on the rigid structure.
• the openings may be located in any useful location of the rigid structure giving access to the lifting support respectively on different faces of the device according to the invention, for example two opposite faces.
• panels forming this closed enclosure provides better security by preventing anyone from accessing the internal space when moving the lifting support, for example by blocking the arm of a user who tries to access the space internal.
• These panels also provide a flat surface allowing a custom or decorative dressing of the device according to the invention, and therefore a better integration into the structure in which it is installed.
• the openings are closed by swing-type doors or the like.
• the lifting support is a frame made of profiles.
• the profiles used for the manufacture of said frame are advantageously identical to those used for the manufacture of the structure.
• the lifting support comprises in an improvement a support system of a load with horizontal sliding function. This system is slidable in the manner of a drawer horizontally with respect to the lifting support and the structure.
• the horizontal sliding of the support system takes place between two extreme positions, a first position in which said system is fully located in the internal volume of the rigid structure and a second position in which it is mainly located outside the rigid structure.
• the support system comprises a locking means, the support system being slidably locked when it cooperates with said locking means.
• the locking means comprises a front stop and a back stop limiting and / or blocking the horizontal displacement of the support system.
• the sliding support system comprises two guide rails attached to the lifting support and at least two support profiles cooperating respectively with the two guide rails.
• the sliding of the support system can be carried out manually, by pulling or pushing a user, or be automated.
• the lifting support, and in particular the sliding support system are adapted to cooperate with a removable container constituting a load receiving space, the container being for example a container having a bottom and peripheral walls.
• mutual cooperation and blocking means are provided respectively on the outer face of the bottom of the container and on the sliding support system.
• the device according to the invention can integrate into a piece of furniture without necessarily cooperating for its attachment with said piece of furniture.
• the rigid structure allows for example the displacement of the lifting support in said furniture or to its upper surface by traversing integrally said furniture on its height and its upper wall.
• the device can thus be arranged in a piece of furniture extending from the floor to the ceiling, and through the upper wall of the piece of furniture, then through the ceiling to integrate into another piece of furniture on the upper floor.
• the one-piece structure of the device is disposed in the first piece of furniture and only the guide means of the lifting support integrated into the structure are extended beyond the structure in the furniture of the upper stage.
• the lifting support can stop at any level along the structure, access to the lifting support being preferably provided for each stopping point of said lifting support.
• the device according to the invention is used in a domestic application.
• the device comprises a thrust member cooperating with the hatch, this thrust element comprises for example two uprights on which is mounted articulated in rotation a thrust bar, the thrust bar having a freedom of movement between a position horizontal and a vertical position.
• this push bar is made of two half-bars, each mounted articulated in rotation between a horizontal position and a vertical position on a post of the pushing element.
• an upper face of the push bar comprises holding means cooperating with a holding member of a hatch plate, for example one of the magnets cooperating with a metal element.
• the invention also relates to the use of a hoist device in a construction, the device comprising a lifting support, a drive means capable of vertically translating the lifting support, a means for guiding the machine in translation. support and a structure in which is mounted the guide means, characterized in that the structure comprises an internal space in which evolves in vertical translation the lifting support and in that the structure forms a unitary rigid assembly for installation by clamping in the construction between two plans of said construction.
• this use is such that the elevator device is a hoist according to the invention.
• FIG. 1 shows a schematic perspective view of a hoist device according to the invention installed between two stages of a construction
• FIG. 2 represents a schematic perspective detail view of sections forming the rigid structure according to the invention
• FIG. 4 represents a cutaway perspective view of the cooperation between a guidance system and an element mounted in said guidance system.
• FIG. 5 shows a schematic perspective view of a tray mounted on a support system of the device and located outside the rigid structure of the invention
• FIG. 6 represents a perspective view of a lifting support comprising the sliding support system
• FIG. 7 shows a schematic perspective view with transparency of a freight elevator according to the invention associated with an existing furniture or furniture designed to receive the present invention
• FIG. 8A represents a schematic perspective view of a thrust means mounted on the lifting support comprising the support system and facing a vertical axis of a removable hatch plate.
• FIG. 8B represents a detail view of FIG. 8A
• Support system 34 Framework of the support system 33 complementary to the lifting support 4
• FIG. 1 represents a schematic perspective view of a freight elevator device according to the invention installed between two stages of a construction.
• the elevator device 1 can be installed in any type of structure between a floor 2 and a ceiling 3.
• This device 1 comprises a lifting bracket 4 mounted movably in translation inside said elevator 1 between the floor 2 and the ceiling 3.
• the elevator device 1 comprises for this purpose a complementary guide system 5 of the lifting support 4. This complementarity allows the translational guidance of the lifting support 4.
• a driving means 6 is connected to said lifting support.
• This drive means is of any type known and easily adaptable by those skilled in the art, for example an electric motor or a hydraulic system.
• the motor 6 controls the displacement of the lifting support 4 in the guiding device 5.
• the control of the displacement of the lifting support is done via a user interface, for example by means of a control box 7 located at each point access of the lifting bracket 4 or removable remote control.
• the connection between the motor 6 and the support of Lifting 4 is preferably carried out using a non-slip connection using a toothed belt, a chain or any other means known to those skilled in the art. This non-slip connection guarantees good safety against the risk of loss of grip and good accuracy both during the movement and when the lifting support 4 is stopped.
• the device 1 comprises a rigid unitary structure 9.
• the rigidity of this structure 9 ensures the maintenance of the device 1 without requiring its attachment against the side walls of a construction 10, the rigid structure 9 being independent of the construction 10. This independence allows the installation of the device 1 in any type of construction and without location constraints in said construction. It is thus not necessary to install the device 1 according to the invention to provide or construct a particular space, the device 1 according to the invention can indifferently be installed against a wall or in the middle of a room.
• the rigid structure 9 is mounted by clamping between the floor 2 and the ceiling 3, that is to say by insertion force between the floor 2 and the ceiling 3.
• This clamping associated with the rigidity of the structure 9, ensures the maintenance of the device 1 in place, and regardless of where the latter is installed.
• the clamping installation does not require many maneuvers mounting against a wall, for example the screwing of a guiding device against walls of a reduced space or other such as a specific structure intended for the fixing of said systems. guide. Only the usual hatches 1 1 must be made allowing the lifting support 4 to pass from one floor to another.
• this structure is unitary and transportable. It comprises all the constituent elements of the integrated device, between The engine 6 may in this case be an electric motor comprising a power cable for mains connection.
• the installer connects the cable to the nearest electrical outlet.
• rollers In order to facilitate the transport or displacement of this structure 9, it is possible to mount rollers directly on said structure, for example in longitudinal grooves 18 as described below. Fixing and height adjustment of such wheels can be made using a fastening means installed on a wheel such as the holding means 20 described in Figure 3A or any other means easily adaptable by the man of the 'art.
• the rigid structure 9 consists of profiles 12 also called tubular elements 12. These profiles are associated with each other to form the structure 9. These profiles 12 are in any material adaptable by those skilled in the art, for example aluminum .
• the rigid structure 9 comprises four corner profiles 12A serving as uprights for the structure 9, developing substantially vertically between the floor 2 and the ceiling 3. These corner profiles 12A are interconnected by transverse profiles 12B developing substantially horizontally.
• the set of profiles 12A and 12B thus develops in a cylindrical form of square base, it being understood that the device according to the invention can take any shape desired and easily adaptable by those skilled in the art, the latter having no has cutting the sections 12A and 12B according to the dimensions and the desired shape of the structure 9.
• the various profiles 12 of the rigid structure 9 are preferably made in one piece, a vertical unitary section 12A aluminum connecting the floor 2 to the ceiling 3.
• the guide system 5 consists of two bars 5A and 5B.
• the bar 5A connects the middle 13C of an upper transverse profile 12C to the middle 13D of a lower transverse profile 12D.
• the transverse section 12C is located near the ceiling 3 and the transverse section 12D is located close to the floor 2.
• the bar 5B connects the middle 13E of an upper transverse profile 12E to the middle 13F of a lower transverse profile 12F.
• the transverse profiles 12C, 12D, 12E and 12F develop parallel to each other on opposite sides of the rigid structure 9.
• the bars 5A and 5B are made from the same profiles as the profiles 12, the construction of a hoist according to the invention therefore requiring only one type of profile used in all of said structure and the bars 5A and 5B constituting the guide system 5 can be directly integrated into the rigid structure 9 at the same as the amounts and crosspieces 12A to 12F.
• FIG. 2 represents a schematic perspective detail view of sections forming the rigid structure according to the invention.
• the profiles 12 preferably have the shape of a cylindrical profile of general square base, and comprise a hollow tubular central cylindrical core 16 and, preferably on each face, longitudinal grooves 18.
• the hollow tubular core 16 advantageously constitutes a receiving housing for the passage of electrical cables.
• the longitudinal groove 18 preferably has a trapezoidal cross section. Each groove 18 has a longitudinal opening towards the outside of the tubular section 12.
• the guide bars 5A and 5B are made based on profiles 12 such as those described here.
• the production of the profiles 12, as well as the guide bars 5A and 5B, in the form of such profiles allows a connection between these various simple and fast elements while ensuring the guiding functions of the lifting support 4 or even mounting panels cover and protection 28, all this from a single type of profile usable for all the different elements of the rigid structure 9.
• the central symmetry of such profiles can be mounted without holding account of their orientation, any face of a profile that can cooperate with another profile.
• the presence of the hollow core 16 allows the passage of electric cable for example to connect the motor to the control boxes 7 installed along the structure 9.
• the profiles and the groove 18 presented here is not limiting and this groove can be made of any form easily adaptable by those skilled in the art for cooperation with the various elements of the structure.
• the profiles may comprise a number of variable groove 18 adapted to their intended purpose in the structure, that is to say that a vertical upright 12A may comprise two grooves 18 located on consecutive faces, a horizontal amount 12B two ribs on opposite sides respectively upper and lower.
• Figures 3A and 3B respectively show sectional and perspective views of two elements of the rigid structure mounted together.
• holding means 20, or mounting means 20 cooperate with the vertical sections 12A on the one hand and the horizontal sections 12B on the other hand to guarantee the rigidity of their connection.
• Each holding means 20 comprises
• a head 21 complementary shape of the groove 18 is intended to be inserted into a groove 18A of the vertical profiles 12A ,.
• the cylinder 22 has, transversely to its axis, a threaded clamping orifice 23 located at the opposite end of the head 21.
• the clamping orifice 23 is partially opposite an orifice 25 located in a bottom of a lateral groove 18B of the horizontal section 12B into which said cylinder 22 is inserted.
• cylinder 22 is held in the central hollow core 16 by means of a clamping means 24 inserted in the lateral groove 18B of the horizontal section 12B.
• the clamping means 24 is constituted by a Allen key type Allen screw and introduced through the orifice 25 provided in the bottom of the groove 18B.
• protection panels 28, installed on the whole of the structure 9, offer an aesthetic covering to the structure 9. They also limit access to an internal volume 29 of said structure 9. This limitation of access to the volume internal 29 secures the device 1 according to the invention. In addition, as for the guiding system 5, such panels 28 can then be directly and completely integrated into the rigid structure 9.
• the device 1 By the sliding positioning of the holding means 20 in the grooves 18A, the device 1 according to the invention allows the assembly of horizontal profiles 12B at any height along the vertical profiles 12A and this with great accuracy and without imposed positioning as is the case in the prior art. It is possible to install access to the internal volume 29 according to the needs of each installation.
• An access to the lifting support 4 is delimited by two vertical profiles 12A and two horizontal profiles 12B and is devoid of a protective panel 28.
• a door 31, automated or not, may be installed in place of a panel 28 in order to limit and secure access 30.
• the modularity of the rigid structure 9 makes it possible to install accesses 30 to the lifting support 4 on several faces 32 of said structure 9, with or without a door 31.
• the integration with the rigid structure 9 of the guiding system 5 furthermore makes it possible to save space in the internal space 29 of the said rigid structure 9, the said guiding system 5 not being attached for mounting to the even inside this inner space 29.
• FIG. 4 is a cut-away perspective view of the cooperation between a guide system and a member mounted in said guide system, for example a lifting support or a support system.
• the lifting support 4 for its drive is translated using the guide means 5 formed by the bars 5A and 5B.
• These guide bars 5A and 5B each comprise a rail 14 cooperating with the lifting support 4.
• These rails 14 have a shaped groove, seen in section, of dovetail, the lifting support 4 having inserted complementary ribs 15 in the grooves of the rails 14, for example in the form of projecting elements 37 as described below.
• the complementary shape between the grooves of the rails 14 and the ribs 15 allows the lifting support 4 to slide along the said guide rails 14.
• the protruding element 37 may be an insert or made integral with the frame 34.
• This projecting element 37 comprises a end 8 dovetail complementary to a guide rail 14.
• the projecting element 37 further comprises two shoulders 44 forming with its end 8 grooves 45 complementary return 46 of said rails 14. The complementarity of the grooves 45 and returns 46 ensures a sliding without locking of the projecting elements 37 in the guide rails 14.
• the capacity of the drive means 6 to stop the lifting support 4 at any level associated with the modular mounting of the profiles 12 makes it possible to create a device 1 capable of moving the loads between very variable levels and completely adaptable to the needs of a user. .
• a projecting element 37 may also be installed on the support frame 47 to ensure the sliding of said support frame in the upper grooves 35 of the frame 34.
• the hoist device of the invention comprises a removable container 19 for containing the load to be moved via the structure.
• Figure 5 shows a schematic perspective view of such a container or tray 19 removably mounted and sliding between the inside and outside the rigid structure according to the invention.
• the lifting support 4 does not need to be a platform provided with at least one bottom, since the tray itself has a solid surface for depositing a load.
• the lifting support 4 is advantageously formed of a frame 34 made from profiles identical to those used for the structure.
• the lifting support 4 comprises a sliding support system 33, of the drawer type, intended to carry the tray 19 visible in FIG. 4.
• a support system 33 is preferably made using profiles identical to the profiles 12.
• the frame 34 of the lifting support 4 cooperates with the guiding system 5 to ensure the raising and lowering of the support in the retracted position of the sliding support system 33.
• the support system 33 comprises at least two profiles or here four assembled in the manner of a frame 47.
• This frame 47 is of complementary shape to the internal volume 29 of the rigid structure 9, thus allowing its displacement in said rigid structure 9.
• the support system 33 is slidably mounted on two profiles of the frame 34 via horizontal guide rails 35 oriented transversely to the plane of an access opening 30.
• the support system 33 is intended to support the tray 19 which is thus suitable to be introduced or removed from the structure by the horizontal sliding of the support system 33.
• the sliding is between two extreme positions of the support system 33.
• a first extreme position, or position of displacement the support system 33 is located entirely in the internal volume 29 of the rigid structure 9, the frames of said support system 33 and the lifting support being arranged one on the other.
• the lifting support 4 and the support system 33 can slide freely along the guide system 5.
• the support system 33 is mainly located outside the internal volume 29 of the rigid structure 9, the frame 47 of said support system 33 being offset relative to the frame 34 of the lifting support 4 while remaining coplanar. More particularly, the tray 19 installed on the support system 33 is mainly located outside said internal volume 29 ( Figure 5), making it easily accessible to anyone wishing to load or unload. Neither the lifting support 4 nor the support system 33 can slide along the guide system 5 in this second extreme position.
• the device according to the invention comprises at least one locking means 50 able to block the displacement of the support frame 47.
• the locking means 50 can be in the form of a stop blocking 51 arranged inside and behind the frame 34 of the support, opposite the access opening, and a lug 52 secured to the back of the support frame 47 and externally to said frame.
• the stop 51 comprises a receiving housing and is elastically open for the insertion of the lug 52 into said housing. The cooperation between the pin 52 and the stop 51 is in force.
• a sufficient thrust on the support frame 47 causes the insertion of the lug 52 in the stop 51 by deformation of the latter.
• the frame 47 is locked in position. In order to unlock the frame 47, a traction on the frame or on the container in place on the frame causes the deformation of the stop 51 and the exit of the lug from the stop 51.
• a shoulder 53 located on the front and inside the frame 47 may constitute a locking means. Under the effect of traction to block the sliding of the support frame 47 out of the internal volume 29 of the structure 9, the shoulder 53 abuts against the frame 34.
• locking means described here are non-limiting and may be replaced by any type of locking means known or easily adaptable by those skilled in the art.
• the tray 19 is removable vis-à-vis the support system 33. It has mutual cooperation means with the frame 47.
• the tray is provided on the outer face 17 its bottom longitudinal ribs adapted to cooperate with the longitudinal grooves of the support frame 47. This cooperation could be carried out by any means known to those skilled in the art, so as to ensure the setting of the container and its stability on the lifting support 4.
• FIG. 7 shows a schematic perspective view with transparency of a freight elevator according to the invention partly associated with a piece of furniture.
• the device can be integrated into a piece of furniture 40 of the construction 8 in which it is installed.
• the rigid structure 9 makes it possible to move the lifting support 4 in the enclosure of the furniture 40, for example a kitchen.
• the guide systems 5 can be "doubled" as shown in Figure 5B without requiring a second rigid structure in the upper stage.
• a first portion 38 of said rails 5 develops in the same plane as the vertical profiles 12A.
• This first portion 38 is between the floor 2 and the ceiling 3, typically between the upper horizontal uprights 12C and 12E and the lower uprights 1 2D and 12F of the rigid structure 9.
• a second portion 39 of said rails 5 is developed therethrough. the ceiling 3 or the hatch 1 1 in the cabinet 40.
• This second portion 39 comprises the rail 14 which cooperates with the ribs 15 or the projecting elements 37 to guide the lifting bracket 4 in the cabinet of the furniture 40 to above the ceiling 3.
• the horizontal sliding of the support system 33 can cooperate with swinging doors 41 on a front face of said piece of furniture 40.
• Such a hatch 42 consists of an orifice 54, through which the lifting support 4, obstructed by a plate 55, passes.
• This plate 55 can be removable and / or mobile by being lifted by a pushing element 43 during the movement of the lifting support 4.
• This plate 55 has on a lower face 56 guiding elements in the form of beveled wedges 57 to guide said plate 55 in the complementary orifice 54 when it is put back in place during a descent lifting support 4 for example.
• Such beveled wedges 57 are preferably installed in pairs located on each of the edges of the plate 55.
• this hatch 42 is activated by the thrust member 43 located above the lifting support 4 and integral in displacement of said lifting support 4
• the thrust member 43 is brought into contact with the hatch and the displacement of the lifting support 4 pushes open the hatch 42.
• a return system for example spring, can bring said hatch 42 closed during a subsequent displacement of the lifting bracket 4. Securely, the hatch can not close while it an individual would concomitantly access the lifting support 4.
• FIG. 8A represents a schematic perspective view of a thrust means mounted on the lifting support including the support and facing along a vertical axis of the removable hatch plate.
• the thrust member 43 has two vertical uprights 58 which are located in the internal space 29 of the structure 9 on each of the lateral sides 59 of the lifting support 4, and a bar 70 connecting said uprights 58.
• the lateral sides 59 are those having the projecting elements 37 cooperating with the guide rails 5.
• the uprights 58 are fixed near the diametrically opposite vertical sections 12A in the structure 9.
• FIG. 8B which represents a detail view of FIG. 8A
• the vertical uprights 58 are mounted by one of their distal end 61 on a shoulder 60 on the sides 59 of the lifting support 4.
• the mounting of the uprights 58 on this shoulder 60 generates a space 62 between said vertical uprights 58 and the support system 33 when it is vis-à-vis said uprights 58.
• This gap 62 prevents any friction between the uprights 58 and the system of support 33, in particular during a horizontal sliding of said support system 33.
• the bar 70 of the thrust member 43 may be made in one piece in which case it is mounted at the distal ends 63 of the uprights 58, opposite to the attachment ends of said uprights.
• this one-piece bar 70 is mounted articulated, free to rotate between a horizontal position and a vertical position, on a single distal end 63 of a post 58.
• the bar 70 comprises on an upper face 64 of the holding means 65, such as for example magnets 65.
• the lower face 56 of said plate 55 comprises a holding element 66, for example a metal element 66, so that when the bar 70 comes into contact with the plate 55, the magnets 65 cooperate with the metal element 66 and maintain the plate 55 in a fixed and stable position on the bar 70.
• the plate 55 is moved only along an axis of vertical displacement during an interaction with the bar 70, allowing a return to the orifice 54 during a lowering of the lifting support 4.
• the magnets 65 and the metal element 66 are here presented for information only and the invention relates to any system easily adaptable by the man of the art of this type.
• the bar 70 is made in two parts, for example in two half-bars 67.
• Each half-bar 67 is articulated on a distal end 63 of a single post 58.
• These half bars 67 are movable in rotation between a horizontal position 68, in which the two half-bars 67 are contiguous and connect the two uprights 58, and a vertical position 69 in which each half-bar 67 is situated in the extension of the upright 58 on which it is articulated .
• the freedom in rotation of the half-bars 67 like the articulation of a bar 70, provides additional safety during a descent of the lifting support 4.
• a thrust member 43 as described herein is easily adaptable on hoists as known today, such as some drum lifts with two uprights and a bar or spacer unit mounted fixed and not articulated on these two uprights.

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• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• Transportation (AREA)
• Automation & Control Theory (AREA)
• Mechanical Engineering (AREA)
• Types And Forms Of Lifts (AREA)

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• 2011
  • 2011-05-19 FR FR1154373A patent/FR2975388B1/fr not_active Expired - Fee Related
• 2012
  • 2012-05-21 EP EP12731029.0A patent/EP2709940A1/de not_active Withdrawn
  • 2012-05-21 WO PCT/FR2012/051124 patent/WO2012156653A1/fr active Application Filing

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