EP4121384A1 - Appareil elevateur - Google Patents
Appareil elevateurInfo
- Publication number
- EP4121384A1 EP4121384A1 EP21719190.7A EP21719190A EP4121384A1 EP 4121384 A1 EP4121384 A1 EP 4121384A1 EP 21719190 A EP21719190 A EP 21719190A EP 4121384 A1 EP4121384 A1 EP 4121384A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shafts
- platform
- rotary members
- aprons
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 239000004753 textile Substances 0.000 claims description 8
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- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 5
- 230000036961 partial effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
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- 230000000284 resting effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/06—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable positively attached to a winding drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/28—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between car or cage and wells
-
- 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
Definitions
- the present invention relates to a lifting device for the vertical transfer of loads or people.
- These domestic lifting devices include a frame installed in a header arranged through the ceiling wall above which extend the attic and a mobile receiving platform connected to the frame by means of cables and pulleys motorized.
- the frame defines an opening for access to the attic and the platform is suspended by its four corners from the frame by means of motorized pulleys installed on trees.
- the receiving platform is suspended substantially horizontally and by controlling the pulleys in rotation, the cables are wound up there simultaneously while the platform is driven in translation towards the frame, or conversely the cables are unwound and the platform is driven in translation towards the floor located directly above the ceiling wall.
- the receiving platform suspended from the frame extends at the level of the floor, it can be loaded with various objects, then it can then be driven in vertical translation towards the frame to come into it, and thus close the opening of the frame while supporting the various objects.
- Such a lifting device is related to a domestic freight elevator allowing the vertical transfer of any object except people. Therefore, if the various objects installed on the receiving platform need to be unloaded to be stored in the attic, another access to these attic must be provided in order to be able to proceed.
- a problem which arises and which the present invention aims to solve is to provide a safer lifting device making it possible to vertically transfer both objects and people.
- a lifting device suitable for transporting loads between an upper plane and a lower plane located directly above said upper plane, said lifting device comprising: on the one hand a frame adapted to be installed at the level of said upper plane and of the motorized rotary members installed in said frame, and on the other hand a receiving platform having two opposite edges and flexible links respectively connecting together said two opposite edges and said motorized rotary members to suspend said platform substantially horizontally , said flexible links being adapted to wrap around said motorized rotary members to drive said platform in a vertical direction between said lower plane and said upper plane.
- Said motorized rotary members comprise two substantially parallel shafts spaced apart from each other, while said flexible links comprise two aprons respectively connecting said two shafts and said two opposite edges; and said two aprons are wound respectively around said two shafts in order to be able to drive said platform.
- a characteristic of the invention lies in the implementation of two aprons mounted on two parallel shafts spaced apart from each other and to which the reception platform is connected.
- Said frame has a free space extending between the two shafts spaced from each other to allow the passage of said loads between the two shafts.
- the receiving platform can be driven in translation in a vertical direction towards the frame when the two aprons are wound simultaneously respectively on their shaft.
- the loads installed on the platform can be driven between the upper plane and the lower plane by crossing the free space between the two shafts.
- the two aprons constitute two walls opposite to each other extending vertically from the receiving platform to the frame, which walls remain taut throughout the rise of the platform.
- said motorized rotary members advantageously comprise a tubular motor housed in one of said two shafts.
- a small diameter longitudinal motor is equipped with a coaxial reduction gear, which makes it a geared motor and it is engaged almost entirely inside the shaft, so that one of its ends equipped with A low speed output shaft is rotatably linked to said shaft, while the other opposite end comes out of the shaft and is rigidly connected to the frame.
- the shaft is suitable for being driven in rotation around the body of the motor.
- the size of the motorized rotary members in the frame is extremely small, compared to that of the motorized rotary members of the lifting devices of the prior art.
- such tubular motors are widely used in the blind and roller shutter industry, so their production cost is relatively low. They are also advantageously equipped with an electrobrake on the rotor, due to lack of current, which makes them completely irreversible.
- said motorized rotary members further comprise another tubular motor installed inside the other of said two shafts.
- said motorized rotary members further comprise a torsion spring installed inside the other of said two shafts to accumulate potential energy when said platform is driven from said upper plane towards said lower plane.
- such a torsion spring makes it possible to supplement the tubular motor when the receiving platform is under load and when it is driven vertically towards the frame. To do this, the torsion spring must accumulate elastic potential energy during the descent of the receiving platform, whether it is loaded or not, in order to be able to return it in the reverse direction when it rises, thus adding the torque of the spring to that of the motor.
- the conditions for implementing such a torsion spring will be explained in more detail in the remainder of the description.
- said two shafts are preferably coupled in rotation.
- the single tubular motor housed in one of said shafts makes it possible to drive the two shafts in rotation. Therefore, the two aprons are wound simultaneously around the two shafts respectively, and the platform thus remains horizontal during the ascent. This is obviously the case during the descent as well. It will be observed that the two shafts can be coupled in rotation so as to be driven in the same direction of rotation. The coupling is then simpler.
- one of the two decks extends tangentially inwardly of the free space between the two trees, while the other apron extends tangentially outward as will be explained below.
- the two shafts can also be rotated in the opposite direction so that the aprons both extend tangentially inwardly of the free space between the two shafts.
- said motorized rotary members preferably, but not exclusively, comprise a toothed belt for rotating said two shafts.
- the two shafts are then fitted with corresponding toothed wheels of the same diameter.
- the rotational movement of the two shafts is then perfectly synchronous.
- the motorized rotary members comprise a transmission chain having links engaging the toothed wheels.
- said two aprons are made of a textile material. They are for example made of a woven and coated textile material. It may for example be a woven fabric in plain weave of polyester threads.
- a textile material of this type having a basis weight of between 400 g / m 2 and 500 g / m 2 is perfectly resistant to deformation in order to be able to support a person and various surplus objects while having a very high safety coefficient. greater than that of cables or straps in such a situation.
- the two aprons are made in one piece, and the latter extends under the receiving platform to which it is secured.
- the two aprons are integral with two opposite edges of the reception platform.
- the latter is made of a rigid material, for example wood, as will be explained in more detail below.
- said frame defines a substantially rectangular opening
- said platform has a rectangular shape to be able to close said rectangular opening.
- the aprons are then connected to the two opposite parallel edges of the reception platform.
- the two shafts mounted in the frame are spaced apart a distance substantially equal to that of the two opposite edges of the platform.
- the two aprons extend substantially parallel to each other.
- the receiving platform not only allows the transfer of loads, but its shape and dimensions are such that once near the frame it closes the opening that it defines.
- the lifting device further comprises guide rails installed vertically between said upper plane and said lower plane, while said platform is provided with 'guide members respectively slidably mounted in said guide rails.
- said platform is driven in translation between the two planes in a rectilinear stroke.
- said guide slides respectively comprise C-sections
- the aprons comprise edges having a swollen edge capable of engaging inside the C-sections.
- At least one of said two shafts is preferably equipped with a centrifugal brake.
- a centrifugal brake which also includes a microswitch, then stops the movement of the motor, thereby immobilizing the two shafts simultaneously, which guarantees the horizontality of the platform after stopping.
- the lifting device further comprises a guardrail mounted retractably on said platform.
- the guardrail is pivotally mounted on the receiving platform about an axis substantially perpendicular to the two aprons.
- FIG. 1 is a schematic perspective view showing the lifting device according to the invention according to a first embodiment, and in an operating state;
- FIG. 2A is a detailed schematic view of FIG. [FIG. 1] in a straight cut along an anteroposterior plane;
- FIG. 2B is a detailed schematic sectional view of FIG. [FIG. 2A] according to an alternative embodiment;
- FIG. 2C is a detailed schematic view from below of the figure
- FIG. 2A according to a first embodiment
- FIG. 2D is a detailed schematic view from below of the figure [Fig. 2A] according to a second embodiment
- FIG. 3 is a schematic perspective view from above of a detail element of the invention shown in FIG. [FIG. 2A];
- FIG. 4 is a partial schematic detail view of the object of the figure [Fig. 3] according to an execution variant
- FIG. 5 is a partial schematic exploded perspective view of the object of the figure [Fig. 3] according to another variant execution;
- FIG. 6 is a partial schematic detail view of the object of the figure [Fig. 3] according to yet another variant embodiment
- FIG. 7 is a partial schematic cross-sectional view of the object of the figure [Fig. 3] according to said yet another variant embodiment illustrated in the figure [Fig. 6];
- FIG. 8 is a schematic perspective view of a particular embodiment of the invention.
- FIG. 9 is a schematic perspective view of the object shown in the figure [Fig. 1] in a first final phase of operation;
- FIG. 10 is a schematic perspective view of the object shown in the figure [Fig. 1] in a second final phase of operation;
- FIG. 11 is a schematic perspective view showing the lifting device according to the invention according to a second embodiment
- FIG. 12 is a schematic perspective view showing the lifting device according to the invention according to a third embodiment of the invention.
- FIG. 13 is a schematic perspective view of a detail of the invention according to another variant embodiment.
- FIG. 14A is schematic perspective views showing the operation of the invention according to this other variant embodiment.
- FIG. 1 shows schematically from above a lifting device 10 installed in the thickness of a ceiling wall 12, which is located above a floor wall 14.
- a floor is by definition a floor. building element bearing the undersurface of any space in a building. More precisely, it is a wooden or concrete frame separating the floors of the building.
- the ceiling wall 12 here defines a living space 16, an attic 18.
- the lifting device 10 comprises a frame 20 inserted in the thickness of the ceiling wall 12 and defining an opening 22 It also has two opposing aprons, a front apron 24 and a posterior apron 26, which apron 24, 26 connects the frame 20 to a reception platform 28.
- the reception platform 28 is then at mid-height and a person 30 who stands on the platform features the upper body extending through the opening 22 and the head into the attic 18.
- the receiving platform 28 is then moved in vertical translation so as to be able to come to the level of the ceiling wall 12 as will be explained below.
- the frame 20 having a front cross member 32 opposite parallel to a rear cross member 34, which cross members are connected by two side cheeks 36, 38, themselves parallel to each other.
- the anterior 32, posterior 34 and the two side cheeks 36, 38 together delimit the opening 22 which is thus substantially rectangular in shape.
- the frame 20 is equipped with two parallel shafts of the same external diameter, a front shaft 42 and a rear shaft 44, which respectively connect the two side cheeks 36, 38 and respectively extend along the cross members anterior 32 and posterior 34.
- FIG. 2A the two aprons 24, 26.
- the front apron 24 connects an anterior edge 46 of the receiving platform 28 to the anterior shaft 42, while the posterior apron 26 connects a posterior edge 48 to the posterior shaft 44.
- the front apron 24 tangentially connects the front shaft 42 opposite the front cross member 32, while the rear apron 26 tangentially connects the rear shaft 44 on the side of the rear cross member 34.
- the aprons, front 24 and posterior 26, are made of a textile material woven from polyester threads in plain weave and with a basis weight of around 450 g / m 2 . They each have a width, for example of 50 cm, and a length of around 2.50 m.
- the textile material is for example coated on both sides with a layer of flexible PVC.
- the weft of the textile material extends over the widthwise, while the chain extends lengthwise to provide maximum resistance to deformation and tensile breakage.
- the receiving platform 28 it is for example made in a wooden plate with a width of close to 50 cm and a substantially greater length, for example 60 cm.
- the length or width of the receiving platform 28 corresponds substantially to the distance between the two shafts, front 42 and rear 44.
- the two shafts 42, 44 are spaced apart from each other and define a free space which extends between the two. This free space corresponds substantially to the opening 22.
- the aprons 24, 26 of textile material are integrally and respectively connected to the two edges, anterior 46 and posterior 48, by conventional means.
- FIG. 2B on which we find the front apron 24, connected to the front edge 46 by means of a C-section 41 held on the edge 46 of the receiving platform 28, thanks to an L-section 43, for example, which it is integral with and inside which the end of the apron, which is shaped in the form of a sheath, is imprisoned by means of a ring 45 engaged inside said sheath itself engaged in the section in C 41.
- a similar arrangement is provided to connect the rear apron 26 to the rear edge 48 of the reception platform 28.
- the two aprons 24, 26, form a single strip which extends under the receiving platform 28.
- the single strip is for example secured to the receiving platform 28 , by means of a finishing plate similar to the ceiling screwed into the reception platform 28 and which sandwiches the strip.
- the rear edge 48 of the receiving platform 28 is equipped with a guide member 50 which extends in a slideway 52 maintained in a vertical direction. It is found in more detail in the figure [Fig. 2C], and seen from below, the receiving platform 28 equipped with the guide member 50 which cooperates with the slide 52.
- the guide member 50 has a flat profile 51 mounted adjustable on the receiving platform 28 and a return 53 engaged inside the slide 52.
- the receiving platform 28 is equipped with two guide members spaced apart from each other and which extend respectively in two slides.
- the slides of the aforementioned type are perfectly suited when they can be applied against a partition extending from the floor wall 14 to the ceiling wall 12, and therefore, that the frame 22 the elevator 10 is located in the vicinity of said partition.
- the slide is replaced by a sling 52 'stretched between the floor wall 14 the ceiling wall 12, while the guide member 50' comprises a flat profile 51 'mounted adjustable on the receiving platform 28, and which flat profile 51 'has a guide orifice 55 through which the sling 52' passes.
- FIG. 3 the first shows more clearly the frame 20 with its front 32 and posterior 34 cross members, and its two side cheeks 36, 38, together delimiting the opening 22.
- the front shaft 42 is hollow and its first front end is open to receive a tubular motor 56 which extends therein a distance, for example corresponding to half its length. It is more precisely a geared motor as will be explained below.
- the tubular motor 56 itself has a first front end 54, which is held in a fixed position outside the front shaft 42 in the thickness of one of the side cheeks 36, and a second opposite end located inside the shaft. From this second end extends a drive shaft integral with the front shaft 42.
- the front shaft 42 finally has a second front end 58, opposite the first, mounted to rotate freely in a bearing (not shown) and inserted into it. the thickness of the other side cheek 38.
- the tubular motor is supplied with electric current from its first front end 54 by means of a power cable 57. And preferably, the tubular motor is equipped with a radio control, so that it can be easily controlled remotely , wireless, by the operator.
- the tubular motor of course includes a reducer, between the output of the motor itself and the drive shaft, so that the latter is for example driven in rotation with a speed between 15 rpm and 20 rpm. Furthermore, the moment of force of the tubular motor is for example between 40 Nm and 50 Nm
- the front shaft 42 is adapted to be rotated counterclockwise around the tubular motor which extends therein.
- the posterior shaft 44 has a first rear end 60 rotatably mounted in a first posterior bearing 62 and a second posterior end 64, rotatably mounted in a second posterior bearing 66, which is clearly visible on the figure [Fig. 4]
- The, first posterior bearing 62 and second posterior bearing 66, are respectively inserted in the thickness of the side cheeks 36, 38.
- the second anterior end 58 and the second posterior end 64 are respectively equipped with an anterior toothed wheel 68 and a front toothed wheel 70 which are connected together by means of a transmission chain 72 in a loop so as to synchronize the rotation of the two shafts 42, 44.
- the geared motor housed in the front shaft 42 is controlled in rotation, the latter is driven in rotation just like the rear shaft 44, in the same direction trigonometric and at the same speed.
- FIG. 9 the lifting device 10 in the ceiling wall 12.
- the two opposing aprons are then fully wound on their corresponding shaft, while the receiving platform 28 is at the end of its travel, substantially at the same level as that of the underside of the ceiling wall 12.
- the person 30 then standing on the platform is entirely in the attic 18. He then only has one step left to cross between the underside of the ceiling wall
- the platform 28 can also accommodate various objects with the person 30, to be able to transport these objects in the attic 18 in order to store them there.
- the two shafts can be controlled to rotate in a clockwise direction, to unwind the aprons 24, 26, until the platform 28 reaches the floor 14.
- the transfer between the two superimposed stages is carried out in complete safety.
- the slide 52 and the guide member 50 in which it is engaged make it possible to stabilize the platform 28 laterally during this transfer, and thus improve safety.
- FIG. 5 showing according to a variant embodiment, the frame 20 ’equipped with motorized rotary members that are significantly different but having the same functions. These latter elements will have the same reference assigned a prime sign: "‘ ".
- the compensation device 74 comprises a first end piece 76 through which a rod 78 passes.
- the latter is integral with the end piece 76, and it extends longitudinally over a length substantially equal to the half-length of the posterior shaft .
- a torsion coil spring 80 extends around the rod 78.
- the torsion coil spring 80 has a first end 82 integral with the first end 76, and an opposite second end integral with a sleeve 84 mounted to rotate freely. on rod 78.
- the motorized rotary members further comprise a second end piece 86 rotatably mounted in a second rear bearing 66 ', which is mounted in the side cheek 38 '.
- the first end piece 76 is mounted integral with the side cheek opposite the side cheek 38 '. This opposite side cheek is not shown in the figure [Fig. 5] for better drawing clarity. It is however identical to the side cheek 36 illustrated in the figure [Fig. 3].
- the rear shaft similarly to the front shaft 42 'which houses the geared motor, the rear shaft, not shown here, then houses the torsion coil spring 80 and it extends from the second end piece 86 with which it comes engaged, up to the first end piece 76 around which it is free to rotate.
- the sleeve 84 also engages the posterior shaft within which it extends.
- the second end piece 86 is provided with a rear toothed wheel 70 ', while the second front end 58' of the front shaft 42 'is provided with a front toothed wheel 68', these toothed wheels 68 ', 70' being of a particular type to receive a toothed belt 72 'which couples them in rotation.
- the cogwheels, posterior 70 ’and anterior 68’ are identical.
- the posterior shaft 44 ' drives the sleeve 84 in rotation, which forces the torsion coil spring 80 more around the rod 78, up to a maximum stress when the receiving platform 28 reaches the floor 14.
- the geared motor can deliver only low power to force the torsion coil spring 80, or the platform of receiving 28 is not loaded, and in which case more power from the gear motor is required to stress the torsion coil spring 80.
- the torsion coil spring 80 returns to the posterior shaft 44 'the potential energy that it has accumulated during the descent, and therefore, assists the geared motor.
- the compensation device 74 it is possible to provide for the implementation of a lower power geared motor, for example 30 Nm instead of a 50 Nm geared motor.
- the anterior toothed wheel 68 is rotatably coupled to the posterior toothed wheel 70”, not directly by a single toothed belt, but by means of two pinions 88, 90 meshing with each other and two intermediate toothed belts 92, 94 respectively coupling in rotation the toothed wheels, anterior 68 ”and posterior 70” and the two pinions, by means of two intermediate toothed wheels 96, 98.
- These two intermediate toothed wheels 96, 98 and the two pinions 88, 90 which extend them respectively, are mounted for rotation in the side cheek 38 ', aligned with the toothed wheels, anterior 68 ”and posterior 70”.
- the anterior toothed wheel 68 ”and the posterior toothed wheel 70” can be driven, one in the clockwise direction, the other conversely in the counterclockwise direction, and hence the corresponding shafts 42 ”and 44 ”shown in the figure [Fig. 7] also. Also, such a characteristic can also be obtained, by successively coupling a plurality of pinions meshing with one another, from the front toothed wheel 68 "to the rear toothed wheel 70".
- the platform 28, which can be found in the figure [Fig. 8], is equipped with a retractable guardrail 100.
- the latter is formed in a tube folded in C and it comprises a cross member 102 and two opposing uprights 104, 106 rotatably mounted on a free edge of the platform 28.
- the retractable guardrail 100 is shown unfolded in the figure [Fig. 8] and it is maintained substantially perpendicular to the platform 28 by means of stop means (not shown) located at the level of the articulation of the two uprights 104, 106 on the platform 28. Thus, when the guardrail 100 is no longer necessary, it is then folded against the platform 28.
- the lifting device 10 described above is of the elevator type between floors in the home. Other applications using the same principles are planned.
- FIG. 11 Another application illustrated in the figure [Fig. 11] aims to facilitate the mobility of people with reduced mobility, and more precisely when it is a question, for a person in a wheelchair 105, of crossing a staircase 108 between a lower plane 110 and an upper plane 112 spaced vertically apart. one another.
- two parallel walls 114, 116 are mounted on the lower plane 110 perpendicular to the staircase 108.
- one of the walls 114 comprises in its thickness, a first shaft equipped with a geared motor inside, while the other wall 116 comprises a second shaft coupled in rotation to the first; the two shafts being connected to a transfer platform 118 by means of two opposite aprons, in a configuration similar to that of the object of the figure [FIG. 7]
- the two shafts and the corresponding aprons do not appear in the figure.
- the person in a wheelchair 105 when approaching the staircase 108, she proceeds to control the elevation of the transfer platform 118 to the level of the upper plane 112 , by means of a radio control for example. Then, thanks to a transit step 120, including the device for synchronizing the two tubes, the person in a wheelchair 105 drives his chair onto the transfer platform 118, which he then commands to lower it to the level of the lower plane 110 She can then drive her chair to leave the transfer platform 118 and move onto the lower plane 110.
- FIG. 12 Yet another application, as shown in the figure [Fig. 12], allows in building work, to adjust operators to the desired working height.
- FIG. 12 shows a scaffolding 122, having a rectangular parallelepipedic frame 124 mounted on rollers 126, themselves resting on a floor wall 125.
- the frame 124 has an upper frame 128, extending in a horizontal mean plane and in which is installed a frame 130, of the type as shown in the figure [Fig. 3]. It thus comprises two shafts opposed to each other 132, 134 and coupled in rotation; one of the shafts 132, 134 being motorized by means of a geared motor housed inside. Also, two aprons 136, 138 respectively connect the two shafts 132, 134 to a work platform 140, located at the level of the floor wall 125.
- the work platform 140 can be controlled so that it can be carried from the floor wall 125 to the level of the upper frame 128. It can support at least one operator and tools or other elements necessary for the operation. work of these operators.
- the geared motor used will advantageously have a power greater than that of the geared motors used in the aforementioned domestic applications.
- a corner 150 of a 28 ”platform secured to a 24” front apron and engaged in a mixed guide profile 152 has a first C-shaped part 154 s 'extending towards the front apron 24 ”and a second part in C 156 extending back from the first part in C 154.
- the first part in C 154 accommodates inside a C profile 155 made in a polymer material with low coefficient of friction. This C-profile 155 is held captive inside the first C-shaped part 154 of the mixed guide profile 152.
- the front apron 24 has an edge 158 whose edge is bulged thanks to a plurality of teeth 160 mounted. step by step and engage in the border 158.
- This plurality of teeth 160 associated with the border 158 correspond to a half-zipper, commonly called a “zipper” or else a “zip”.
- the width of the slot of the C-profile, 155 is greater than the thickness of the front deck 24 "and its border 158, which can translate freely therein vertically, but it is less than the thickness of the border 160 of the apron 24 "which can therefore also circulate there vertically without however being able to leave it horizontally.
- Two elastic rods of square section 157 make it possible to take up the clearances between the two rods and to give the apron 24 "a constant tension, by interposing on either side of the slots of the profiles in C on the returns of each of them.
- the angle 150 of the 28 ”platform is mounted to slide vertically in the angle formed by the two C-shaped parts 154, 156.
- the three other angles of the platform 28 are thus mounted to slide in three other mixed guide profiles, not shown.
- the two edges of each of the aprons, anterior and posterior are engaged in the first C 154 part of the composite guide profile 152, and inside its C 155 profile.
- the load bar 164 is originally substantially at breast height, as illustrated in the figure [Fig. 14A], so that a person can come and take a seat on platform 28 ”. It is heavy enough that the spring tube on which it is partly wound cannot lift it. Then, the 28 ”platform rises, and the person is then, not only between the two stretched aprons 24”, 26 ”but in addition, as you go up, safely between the two canvases. 162 as illustrated in the figure [Fig.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2002543A FR3108110B1 (fr) | 2020-03-16 | 2020-03-16 | Appareil élévateur |
PCT/FR2021/050428 WO2021186125A1 (fr) | 2020-03-16 | 2021-03-15 | Appareil elevateur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4121384A1 true EP4121384A1 (fr) | 2023-01-25 |
Family
ID=70614231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21719190.7A Pending EP4121384A1 (fr) | 2020-03-16 | 2021-03-15 | Appareil elevateur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4121384A1 (fr) |
FR (1) | FR3108110B1 (fr) |
WO (1) | WO2021186125A1 (fr) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4326673A1 (de) * | 1993-08-09 | 1997-06-12 | Gae Mbh & Co | Lasthebe- und Transportgerät |
CA2497203C (fr) * | 2002-12-26 | 2010-08-31 | Hanlon Engineering, Inc. | Appareil de levage monte sur un plafond |
US7416055B2 (en) | 2003-09-08 | 2008-08-26 | Spacelift Products, Inc. | Platform lift apparatus for attic storage space |
US9120645B2 (en) * | 2011-11-16 | 2015-09-01 | Spacelift Products, Inc. | Control system for a platform lift apparatus |
-
2020
- 2020-03-16 FR FR2002543A patent/FR3108110B1/fr active Active
-
2021
- 2021-03-15 EP EP21719190.7A patent/EP4121384A1/fr active Pending
- 2021-03-15 WO PCT/FR2021/050428 patent/WO2021186125A1/fr unknown
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Publication number | Publication date |
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FR3108110A1 (fr) | 2021-09-17 |
WO2021186125A1 (fr) | 2021-09-23 |
FR3108110B1 (fr) | 2023-10-13 |
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