EP2845835A1 - Lifting device - Google Patents

Lifting device Download PDF

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Publication number
EP2845835A1
EP2845835A1 EP20140183611 EP14183611A EP2845835A1 EP 2845835 A1 EP2845835 A1 EP 2845835A1 EP 20140183611 EP20140183611 EP 20140183611 EP 14183611 A EP14183611 A EP 14183611A EP 2845835 A1 EP2845835 A1 EP 2845835A1
Authority
EP
European Patent Office
Prior art keywords
platform
pulley
pylon
transmission means
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140183611
Other languages
German (de)
French (fr)
Other versions
EP2845835B1 (en
Inventor
Fabio Rencurosi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
N & B KNAUF et Cie SCS/ECV
Original Assignee
N & B KNAUF et Cie SCS/ECV
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 N & B KNAUF et Cie SCS/ECV filed Critical N & B KNAUF et Cie SCS/ECV
Priority to RS20160384A priority Critical patent/RS54930B1/en
Publication of EP2845835A1 publication Critical patent/EP2845835A1/en
Application granted granted Critical
Publication of EP2845835B1 publication Critical patent/EP2845835B1/en
Priority to HRP20160570TT priority patent/HRP20160570T1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C3/00—Launching or hauling-out by landborne slipways; Slipways
    • B63C3/06—Launching or hauling-out by landborne slipways; Slipways by vertical movement of vessel, i.e. by crane
    • 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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/02—Stationary loaders or unloaders, e.g. for sacks
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/0755—Position control; Position detectors

Definitions

  • the present invention relates to a lifting device comprising at least one pylon, having a head end and a foot end, a transmission means, and a mobile platform having an apical face and a basal face opposite one to the other. other, said platform being mounted on said pylon and arranged to move between said foot end and said leading end of said at least one pylon, said pylon supporting at a first level a first pulley arranged to be rotated and to drive the first transmission means engaged with the first pulley and having a first end connected to said apical face of said platform, said first transmission means being arranged to move said platform between said leading end and said foot end by rotation of said first pulley; .
  • this device is used to load and unload transport vehicles such as boats, freight wagons or truck trailers.
  • Such a device is known for example from the document US5971108A which discloses a lifting device comprising a pair of vertical pylons parallel to each other, each pylon comprising a leading end and a foot end.
  • the elevator device further comprises a mobile platform arranged to move between the leading end and the foot end of each tower.
  • Each pylon supports on its end end a toothed pulley connected by a motor transmission arm arranged to rotate the toothed pulley at a speed of rotation about a first fixed axis of rotation through the transmission arm, the toothed pulley the first pylon facing the toothed pulley of the second pylon.
  • Each pulley causing a chain engaged with the toothed pulley, which chain is connected to the apical face of the platform mobile and which, when the toothed pulley is rotated by the action of the motor, is driven by the latter inducing a movement of the platform between a loading level and a discharge level of the latter.
  • This constraint requires the repetitive adjustment of the position of the platform for each back and forth of the latter between, for example, the loading level of the boat and a loading level of the platform from a loading platform on the platform when loading goods from the dock to the boat.
  • Adjustment can also be made when unloading goods from the boat to the dock, between the unloading level of the boat and a platform unloading level on the platform of the dock.
  • This adjustment is generally tedious and time consuming because it requires the vigilance of the operator who must ensure control of the engine while keeping attention to the movement of descent or rise of the mobile platform.
  • this adjustment is achieved by performing a descent movement of the platform which is adjusted by jerk to avoid any collision between the mobile platform and the boat.
  • a jerky movement of the platform can be the source of constraints that are generated in response to jolts and that act directly on the chain.
  • constraints can also act on the merchandise loaded on the platform and which can also be damaged.
  • these constraints can also act on the merchandise loaded on the platform and which can also be damaged.
  • these jolts are too large amplitude, there may be tilting of the goods, which also constitutes a non-negligible risk of accident.
  • a lifting device as described at the beginning, characterized in that it comprises a first control means connected to a regulator of said rotational speed of said first pulley and to a first movable sensor mounted on one of the pylons and free to move along the pylon between said head end and said foot end of said pylon, said first sensor being arranged to, on the one hand, determine a first position in the three-dimensional space and, d on the other hand, coding said first position into a first signal intended to be sent to said control means, said first control means being arranged to process said first signal as input, calculating a second remote reference position at a second predetermined threshold height of said first position, and then encode said second reference position into a second signal sent to the regulator arranged to receive this second signal and then translate it into a variation of said rotational speed of said motor when the mobile platform passes through said second reference position to approach said first position.
  • the lifting device makes it possible to adapt in real time the speed of descent of the platform and of modulate this speed when the platform approaches the level of loading or unloading of the boat, that is to say when the distance between the platform and the first position, which first position corresponds to the level of loading or unloading of the boat, corresponds at a height equal to or less than the second predetermined threshold height.
  • the device according to the invention is characterized in that said pylon supports, at a second level located below said first level, a second pulley, in free rotation, to form a first pair of pulleys interconnected by said first transmission means, said transmission means having a second end connected to said base face of said platform which closes said first transmission means, said first transmission means being arranged to move said platform and drive said second pulley when said first pulley is put in rotation.
  • the first pulley when the first pulley is rotated, for example in the direction of clockwise, it exerts a pull down on the transmission means and a voltage proportional to the speed of rotation. rotation of the pulley facing the second pulley is generated from the second end of the transmission means connected to the basal face of the platform. This tension initiates the descent of the platform which is translational movement downward.
  • the downward movement of the movable platform is then governed by rotating the first pulley at a rotational speed and more by gravity alone.
  • Another advantage of the lifting device according to the invention is that it allows the fine control of the displacement of the platform, that is to say a control to instantly adapt the speed of movement of the platform when the lifting device is in operation, thus allowing for example to slow down the platform when it approaches a level of loading or unloading of the vehicle and thus reduce the risk of collisions between the latter and said platform.
  • the device comprises a second pylon for forming with said first pylon a pair of pylons, said second pylon supporting a first pulley at a first level and a second pulley at a second level located below said first level, said pulleys being connected between them by a second transmission means, said transmission means comprising a first end connected to said apical face of said platform and a second end connected to said base face of said platform, said second transmission means being arranged to move said platform between said high position and driving said second pulley when said first pulley is rotated.
  • the presence of a second tower makes it possible, on the one hand, to distribute the load carried by the platform on an additional support that is said second tower, thus stabilizing said lifting device, and, on the other hand, the presence of a first additional rotary pulley mounted on the second pylon can distribute the traction work on two pulleys instead of one and thus increase by a factor at least double the load on the platform for equal work exerted by each pulley.
  • said first pulley is placed at the head end of said pylon so that if the device is placed at the end of the waterway dock, said first rotary pulley is sufficiently far from the water level to avoid any contact with the water in case of example of flood, this first pulley being in particular intended to be connected to a motor.
  • the first and second pylons of said pair of pylons are interconnected at their head end by a rotating axle around which said first pulleys of each of the pylons are placed. in rotation synchronously.
  • this axle makes it possible, on the one hand, to stabilize the two pylons by making them integral with each other and, on the other hand, to ensure the synchronous rotation of the first pulleys so that each means of transmission drives the platform in synchronized motion.
  • At least one pylon is provided with a guide rail and wherein said platform comprises at least one first bearing arranged to be placed in said rail.
  • said second pylon is provided with a guide rail and wherein said platform comprises at least one second bearing arranged to be placed in said second rail.
  • the lifting device according to the invention is intended to be placed at the end of the wharf of waterways or railways.
  • the device is characterized in that it is arranged to be placed at the end of a waterway platform having a water level, and in that it is arranged so that a first plane tangent to said apical face of said mobile platform is substantially parallel to a second plane passing through a first level corresponding to a low position of the platform and a third tangent plane passing through a second level corresponding to a high position of the platform and arranged to be remote water level of a first height greater than or equal to 7 meters, preferably between 7 and 10 meters.
  • the height of 7 meters is the minimum desirable height to avoid a collision between a boat heading for the platform and the platform at rest, is in the high position of safety, so that it is assured that the latter can not not come in contact with the hull of the boat.
  • the lifting device is characterized in that it comprises a first safety system comprising at least a first spring arranged to connect said apical face of the mobile platform to said first end of the transmission means, said first spring being associated with a second spring elongation sensor, said security system comprising a second control means connected to said elongation sensor and an emergency stop module arranged to stop said rotation of said first pulley, said second control means being arranged to process a third signal sent by said elongation sensor and corresponding to an elongation value measured by said elongation sensor, to compare this third signal with a second reference signal corresponding to a threshold elongation value and for sending a fourth signal to said emergency stop module arranged to translate said fourth signal into a stop of rotation of said first pulley.
  • a first safety system comprising at least a first spring arranged to connect said apical face of the mobile platform to said first end of the transmission means, said first spring being associated with a second spring elongation sensor
  • said security system comprising a
  • the first spring connecting the apical face of the platform to the first end of the transmission means undergoes an upward elongation induced by the pulling force of the driven rotation means. by the first rotating pulley.
  • This elongation is detected by the elongation sensor and translated by stopping the rotation of the first pulley when the elongation value is greater than a threshold elongation value.
  • said elevator device is characterized in that said first security system comprises at least one second spring arranged to connect said base face of said mobile platform to said second end of said transmission means, said second spring being associated with a third spring elongation sensor connected to said second control means.
  • the second spring connecting the basal face of the platform to the second end of the transmission means undergoes a downward elongation induced by the traction force of the rotation means driven by the first pulley in rotation.
  • This elongation is detected by the elongation sensor and translated by stopping the rotation of the first pulley when the elongation value is greater than a threshold elongation value.
  • said device according to the invention is characterized in that it comprises a second security system in which said basal face of the mobile platform is provided with a fourth contact sensor which is a malleable rod connected to said second control means.
  • the contact sensor records a deformation that it transforms into a fifth signal sent to the second control means which processes this signal and controls the shutdown of the device.
  • said lifting device is characterized in that at least one pylon, preferably each pylon comprises a series of notches aligned along an edge of a tread of the rail, said notches being included in a fourth plane perpendicular to the first tangent plane of the apical face of said mobile platform, said platform having two opposite lateral faces to each other and arranged to connect said apical face to said basal face of the mobile platform, each of the faces lateral elements having a fifth tangent plane parallel to the fourth plane in which the notches are aligned, each of the faces being further provided with at least one stopper-chute arranged to fit into said notches, said stopper-chute being connected to a jack pneumatic or magnetic arranged to engage said stopp-fall in one of the notches, the jack being connected to said second means of c control arranged to control the cylinder when the rotation of the pulley is stopped.
  • the figure 1 is a perspective view of the device according to the invention 1 comprising a pair of vertical pylons 2, 3 parallel to each other, each pylon comprising a leading end 4 and a foot end 5.
  • the device further comprises a mobile platform 6 arranged to move between the leading end 4 and foot 5 of each pylon, and having an apical face 7 and a basal face 8 opposite to the apical face 7.
  • This mobile platform 6 is mounted on each of the pylons, so that it is placed between them.
  • a first plane tangent to the apical face 7 of the platform mobile 5 is oriented perpendicular to an axis A parallel to each pylon.
  • the lifting device is in particular intended to be placed at the end of platform 9, for example of a waterway such as a river or a river having a water level 10, for loading and unloading boats, and is arranged on the platform 9 so that the first plane tangential to the apical face 7 of the mobile platform 6 is substantially parallel to a second plane passing through a first level 11 corresponding to a lower position of the platform and to a third tangent plane passing through a second level 12 corresponding to a high position of the platform and remote from the water level 10 of a first height H1 greater than or equal to 7 meters.
  • a waterway such as a river or a river having a water level 10
  • the lifting device is in particular intended to be placed at the end of platform 9, for example of a waterway such as a river or a river having a water level 10, for loading and unloading boats, and is arranged on the platform 9 so that the first plane tangential to the apical face 7 of the mobile platform 6 is substantially parallel to a second plane
  • the low position 11 is at the foot end 5 of each pylon and is distant from the water level by a height of at least 10 centimeters, preferably between 10 and 50 centimeters.
  • Each pylon supports, on the one hand, on its leading end 5 a first pulley 13 which is a toothed pulley or a pinion gear, connected by a transmission arm 14 to a motor 15 arranged to rotate the first pulley 13 at a speed of rotation around a first fixed axis of rotation r 1 passing through the transmission arm, the first pulley of the first pylon facing the first pulley of the second pylon.
  • a first pulley 13 which is a toothed pulley or a pinion gear
  • each tower also supports a second pulley 16 in free rotation around a second fixed axis of rotation r 2 at the foot end.
  • the second pulley is placed on the pylon so as to be aligned with the first pulley along the axis A parallel to each pylon, so that the second pulley of the first pylon faces the second pulley of the second pylon.
  • the lifting device 1 furthermore comprises a transmission means 17, which is a chain or a toothed belt, arranged for being mounted on the first pulley 13 and the second pulley 16, and cooperating with them, and which has, on the one hand, a first end 18 connected by means of a first connecting means 19 to a first junction point 20 on the apical face 7 of the mobile platform 6, and, secondly, a second end 21 connected by means of a second connecting means 22 to a second junction point 23 on the basal face 8 of the mobile platform, the mobile platform 5, thus closing said transmission means 16.
  • a transmission means 17 which is a chain or a toothed belt, arranged for being mounted on the first pulley 13 and the second pulley 16, and cooperating with them, and which has, on the one hand, a first end 18 connected by means of a first connecting means 19 to a first junction point 20 on the apical face 7 of the mobile platform 6, and, secondly, a second end 21 connected by means of a second connecting means 22 to a
  • the second pulley 16 is mounted in a partially closed sealed envelope comprising an opening zone oriented towards the basal face of the platform to form an access to the transmission means to the second pulley on which he climbed.
  • the sealed envelope thus makes it possible to protect the gear formed by the transmission means mounted on the second pulley from water and thus to prevent a risk of corrosion of this gear by the formation of rust on the latter which can harm the good operation of the device, this risk of corrosion being particularly high when the waterway is seawater.
  • each pylon is preferably a guide rail 24 whose cross section is U-shaped comprising a pair of treads opposite to each other 25
  • the platform comprises a pair of freely rotating wheels 27, each wheel of which is arranged to be mounted in the cavity 28 formed by the U-section of each of the rails, as illustrated in FIG. figure 3 .
  • the elevator device further comprises a first control means 30 connected by a first connection means to a regulator 31 of the rotational speed of the first pulley and by a second connection means to a first movable sensor 32 mounted on one of the pylons and free to move along the pylon between the head end 4 and the foot end 5.
  • This first sensor is arranged to, on the one hand, determine a first position in the three-dimensional space and, on the other hand, to code this first position into a first signal intended to be sent by the second connection means to the means of communication. control.
  • the preferred type of sensor is a laser position sensor.
  • This first position corresponds to a third variable level 33 which can be for example a level of loading or unloading located between the high position 12 and the low position 11 of the mobile platform 5.
  • this third variable level 33 can for example correspond at the unloading level of a boat associated for example at the level at which the pontoon of the boat is located or at the upper limit of the hull 34 of a barge.
  • the first control means 30 is arranged to process the first signal input, calculate a second reference position 35 distant to a second predetermined threshold height H 2, for example in a range of values ranging from 0.5 meters to 2 meters, preferably from 0.5 to 1.0 meters, from the position of the third variable level 33 and then code this second reference position into a second signal sent by the first connection means to the regulator 31 arranged to receive this second signal and then translate it for example into a reduction of the rotational speed of the engine and therefore the speed of movement of the mobile platform when the latter passes through the reference position 35 to approach the position of the third variable level 33.
  • This device thus makes it possible to systematically control and adapt the speed of descent of the mobile platform as a function of the level of unloading or loading which continues to descend or rise as the boat is loaded or unloaded.
  • the device according to the invention comprises a first security system comprising a first spring 36 arranged to connect the apical face 7 of the mobile platform 6 to the first end 18 of the transmission means 17, this first spring being associated with a second sensor 37 of elongation of the spring.
  • the security system comprises a second control means 38 connected to the elongation sensor 37 by a third connection means and to an emergency stop module 39 by a fourth connection means, said emergency stop module. being arranged to stop the rotation of said first pulley and therefore the movement of the platform, this control means being further arranged to process a third signal sent by said elongation sensor by the third connection means and corresponding to a value of d elongation measured by the elongation sensor, for comparing this third signal with a second reference signal corresponding to a threshold elongation value and for sending a fourth signal by the fourth connection means to the emergency stop module arranged to translate this fourth signal into a stop of the rotation of the first pulley and therefore of the movement of the platform when the elongation value is greater than at the value of threshold elongation.
  • the security system comprises a second spring 40 arranged to connect the basal face 8 of the mobile platform to the second end 21 of the transmission means.
  • second spring being associated with a third spring elongation sensor 41 connected to said second control means by a fifth connection means.
  • the device is provided with a second security system consisting in that the basal face of the mobile platform is provided with a fourth contact sensor 42 which is a malleable rod connected by a sixth connecting means to the second means of contact. control.
  • the contact sensor records a deformation that it transforms into a fifth signal sent to the second control means which processes this signal and controls the stopping of the device via the emergency stop module.
  • each pylon comprises a series of notches 43 aligned along an edge of a tread of the rail, these notches being included in a fourth plane perpendicular to the first tangential plane of the apical face of the mobile platform.
  • the ceiling shape also has two lateral faces 44, 45 opposite one another and arranged to connect the apical face 7 to the basal face 8 of the mobile platform 6, each of the lateral faces having a fifth tangent plane parallel to the fourth plan in which are aligned the notches 43.
  • Each of the lateral faces is further provided with a stopper-chute 46 arranged to fit into the notches, said stopper-chute being connected to a pneumatic cylinder 47 or magnetic arranged to engage said stopp-drop in one of the notches, the cylinder being connected to the second control means arranged to control the cylinder when the rotation of the pulley is stopped.
  • the device is characterized in that, when the vacuum platform is in the high position, the first end 18 of said transmission means 17 is at a height H3 of the first pulley 13, this height H3 defines a portion of the transmission means 48 to which is connected a traction / compression sensor 49 integrally connected to a motor support and arranged to be connected to an actuator 50 connected at one of its ends to the part of the transmission means 48.
  • the actuator is positioned at a fourth initial level.
  • the load by gravity, exerts a force of tension on the transmission means that tends to the bottom.
  • the elongation corresponds to a value ⁇ H which is the difference between the height H4 and the height H3.
  • the compression tensile sensor converts this elongation value ⁇ H into a measurement of the weight of the load brought to the platform. In this way, the sensor makes it possible to measure the weight of the load both during the loading and during the unloading thereof on the mobile platform 6.
  • the engine rotates in a clockwise direction, via the rotating arm, the first pulley which pulls down on the transmission means and a tension directed towards the second pulley is generated from the second end of the transmission means connected to the basal face of the platform which is empty.
  • This tension initiates the descent of the empty mobile platform along each pylon in a direction from the high position 12 to the low position 11 ( figure 2a ).
  • the platform is then slowed down by the control system, controlled by the first control means, as it approaches the third variable level 33 ( figure 2b ) unloading the boat to be loaded.
  • the first position is chosen at a predetermined distance preferably between 0.25 and 0.50 meters above the third variable level so that when the boat is unloaded, the pontoon of the boat does not come into contact with the apical face of the platform when raising the level of the pontoon after unloading the goods from the bateu to the platform.
  • the platform once loaded is then reassembled.
  • the motor rotates counterclockwise, via the rotating arm, the first pulley which then exerts an upward pull on the transmission means and a tension directed towards the first pulley is generated from the first end of the transmission means connected to the apical face of the platform.
  • This voltage initiates the rise of the loaded platform along each pylon in a direction from the low position 11 to the high position 12.
  • the mobile platform is for example stopped at an intermediate position of the third variable level 33 ( Figure 2c ) corresponding to the level of a platform loading platform from which the mobile platform is unloaded.
  • the engine rotates in a clockwise direction, via the rotating arm, the first pulley which pulls down on the transmission means and a tension oriented towards the second pulley is generated from the second end of the transmission means connected to the base face of the platform loaded with the goods.
  • This voltage initiates the descent of the mobile platform to empty along each pylon in a direction from the high position 12 to the low position 11 ( figure 2a ).
  • the platform is then slowed down by the control system, controlled by the first control means, as it approaches the third variable level 33 ( figure 2b ) loading the boat to be unloaded.
  • the platform once unloaded is then reassembled.
  • the motor rotates counterclockwise, via the rotating arm, the first pulley which then exerts an upward pull on the transmission means and a tension directed towards the first pulley is generated from the first end of the transmission means connected to the apical face of the platform.
  • This voltage initiates the rise of the platform discharged along each tower in a direction going from the low position 11 to the high position 12.
  • the mobile platform is for example stopped at an intermediate position of the third variable level 33 ( Figure 2c ) corresponding to the level of an unloading platform of the platform from which the mobile platform is loaded.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Advancing Webs (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Noodles (AREA)

Abstract

Dispositif élévateur comprenant une plateforme mobile (6) montée sur au moins un pylône supportant une première et une deuxième poulies (13, 16) pour former une première paire de poulies reliées entre elles par un moyen de transmission (17), lesdites poulies étant agencées pour être mise en rotation et entraîner le premier moyen de transmission auquel est reliée la plateforme mobile par une face apicale (7) et une face basale (8), ledit moyen de transmission étant agencé pour déplacer ladite plateforme (6) et entraîner en rotation ladite deuxième poulie (16) lorsque ladite première poulie (13) est mise en rotation.Elevating device comprising a movable platform (6) mounted on at least one pylon supporting a first and a second pulley (13, 16) to form a first pair of pulleys interconnected by a transmission means (17), said pulleys being arranged to be rotated and to drive the first transmission means to which the mobile platform is connected by an apical face (7) and a basal face (8), said transmission means being arranged to move said platform (6) and to rotate said second pulley (16) when said first pulley (13) is rotated.

Description

La présente invention se rapporte à un dispositif élévateur comprenant au moins un pylône, présentant une extrémité de tête et une extrémité de pied, un moyen de transmission, et une plateforme mobile présentant une face apicale et une face basale opposées l'une à l'autre, ladite plateforme étant montée sur ledit pylône et agencée pour se déplacer entre ladite extrémité de pied et ladite extrémité de tête dudit au moins un pylône, ledit pylône supportant à un premier niveau une première poulie agencée pour être mise en rotation et pour entraîner le premier moyen de transmission engagé avec la première poulie et présentant une première extrémité reliée à ladite face apicale de ladite plateforme, ledit premier moyen de transmission étant agencé pour déplacer ladite plateforme entre ladite extrémité de tête et ladite extrémité de pied par rotation de ladite première poulie.The present invention relates to a lifting device comprising at least one pylon, having a head end and a foot end, a transmission means, and a mobile platform having an apical face and a basal face opposite one to the other. other, said platform being mounted on said pylon and arranged to move between said foot end and said leading end of said at least one pylon, said pylon supporting at a first level a first pulley arranged to be rotated and to drive the first transmission means engaged with the first pulley and having a first end connected to said apical face of said platform, said first transmission means being arranged to move said platform between said leading end and said foot end by rotation of said first pulley; .

Typiquement, ce dispositif est utilisé pour charger et décharger des véhicules de transport comme des bateaux, des wagons de fret ou encore des remorques de camions.Typically, this device is used to load and unload transport vehicles such as boats, freight wagons or truck trailers.

Un tel dispositif est connu par exemple du document US5971108A qui divulgue un dispositif élévateur comprenant une paire de pylônes verticaux parallèles entre eux, chaque pylône comprenant une extrémité de tête et une extrémité de pied.Such a device is known for example from the document US5971108A which discloses a lifting device comprising a pair of vertical pylons parallel to each other, each pylon comprising a leading end and a foot end.

Le dispositif élévateur comprend en outre une plateforme mobile agencée pour se déplacer entre l'extrémité de tête et l'extrémité de pied de chaque pylône.The elevator device further comprises a mobile platform arranged to move between the leading end and the foot end of each tower.

Chaque pylône supporte sur son extrémité de tête une poulie crantée reliée par un bras de transmission à moteur agencé pour mettre en rotation la poulie crantée à une vitesse de rotation autour d'un premier axe fixe de rotation traversant le bras de transmission, la poulie crantée du premier pylône faisant face à la poulie crantée du deuxième pylône.Each pylon supports on its end end a toothed pulley connected by a motor transmission arm arranged to rotate the toothed pulley at a speed of rotation about a first fixed axis of rotation through the transmission arm, the toothed pulley the first pylon facing the toothed pulley of the second pylon.

Chaque poulie entrainant une chaine engagée avec la poulie crantée, laquelle chaîne est reliée à la face apicale de la plateforme mobile et qui, lorsque la poulie crantée est mise en mouvement de rotation sous l'action du moteur, est entraînée par cette dernière induisant un mouvement de la plateforme entre un niveau de chargement et un niveau de déchargement de cette dernière.Each pulley causing a chain engaged with the toothed pulley, which chain is connected to the apical face of the platform mobile and which, when the toothed pulley is rotated by the action of the motor, is driven by the latter inducing a movement of the platform between a loading level and a discharge level of the latter.

Des dispositifs élévateurs conventionnels sont aussi décrits dans les documents JP2003104541A , JP2002047821 , et JPH02144307A .Conventional lifting devices are also described in the documents JP2003104541A , JP2002047821 , and JPH02144307A .

Malheureusement, les dispositifs de l'état de l'art présentent tous un inconvénient majeur : lors du chargement ou du déchargement du bateau, il faut constamment adapter la vitesse de descente de la plateforme en fonction de l'évolution du niveau de déchargement ou de déchargement qui ne cesse de descendre ou de monter au fur et à mesure que le bateau est chargé ou déchargé.Unfortunately, the devices of the state of the art all have a major disadvantage: when loading or unloading the boat, it is necessary to constantly adapt the speed of descent of the platform according to the evolution of the level of unloading or unloading that continues to descend or climb as the boat is loaded or unloaded.

Cette contrainte nécessite l'ajustement répétitif de la position de la plateforme pour chaque va-et-vient de cette dernière entre, par exemple, le niveau de chargement du bateau et un niveau de chargement de la plateforme depuis un plateau de chargement sur le quai, lors du chargement d'une marchandise depuis le quai vers le bateau.This constraint requires the repetitive adjustment of the position of the platform for each back and forth of the latter between, for example, the loading level of the boat and a loading level of the platform from a loading platform on the platform when loading goods from the dock to the boat.

L'ajustement peut aussi être fait lors du déchargement d'une marchandise depuis le bateau vers le quai, entre le niveau de déchargement du bateau et un niveau de déchargement de la plateforme sur le plateau du quai.Adjustment can also be made when unloading goods from the boat to the dock, between the unloading level of the boat and a platform unloading level on the platform of the dock.

Cet ajustement est généralement fastidieux et coûteux en temps car il nécessite la vigilance de l'opérateur qui doit assurer le contrôle du moteur tout en gardant sont attention portée sur le mouvement de descente ou de montée de la plateforme mobile. Généralement, cet ajustement est réalisé par la réalisation d'un mouvement de descente de la plateforme qui est ajusté par à-coup afin d'éviter toute collision entre la plateforme mobile et le bateau.This adjustment is generally tedious and time consuming because it requires the vigilance of the operator who must ensure control of the engine while keeping attention to the movement of descent or rise of the mobile platform. Generally, this adjustment is achieved by performing a descent movement of the platform which is adjusted by jerk to avoid any collision between the mobile platform and the boat.

Malheureusement, un mouvement par à-coup de la plateforme peut être à l'origine de contraintes qui sont générées en réaction aux à-coups et qui agissent directement sur la chaîne.Unfortunately, a jerky movement of the platform can be the source of constraints that are generated in response to jolts and that act directly on the chain.

Celle-ci, à terme, peut être endommagée et rompre, ce qui est particulièrement le cas lorsque la charge supportée par la plateforme est lourde.This, eventually, can be damaged and break, which is particularly the case when the load supported by the platform is heavy.

Par ailleurs, ces contraintes peuvent aussi agir sur la marchandise chargée sur la plateforme et qui peut aussi être endommagée. Typiquement, si ces à-coups sont d'amplitude trop élevée, il peut y avoir basculement de la marchandise, ce qui constitue aussi un risque non-négligeable d'accident.In addition, these constraints can also act on the merchandise loaded on the platform and which can also be damaged. Typically, if these jolts are too large amplitude, there may be tilting of the goods, which also constitutes a non-negligible risk of accident.

Il existe donc un réel besoin de concevoir un dispositif élévateur qui permette de disposer d'un dispositif élévateur au fonctionnement plus sécurisé et plus efficace en terme de gain de temps et de support logistique.There is therefore a real need to design a lifting device that allows to have a lifting device to operate more secure and more efficient in terms of time saving and logistical support.

Ce besoin est pallié en disposant d'un dispositif élévateur tel que décrit au début, caractérisé en ce qu'il comprend un premier moyen de contrôle relié à un régulateur de ladite vitesse de rotation de ladite première poulie et à un premier capteur mobile monté sur un des pylônes et libre de se déplacer le long du pylône entre ladite extrémité de tête et ladite extrémité de pied dudit pylône, ledit premier capteur étant agencé pour, d'une part, déterminer une première position dans l'espace tridimensionnel et, d'autre part, coder ladite première position en un premier signal destiné à être envoyé vers ledit moyen de contrôle, ledit premier moyen de contrôle étant agencé pour traiter en entrée ledit premier signal, calculer une deuxième position de référence distante à une deuxième hauteur seuil prédéterminée de ladite première position, et ensuite coder ladite deuxième position de référence en un deuxième signal envoyé vers le régulateur agencé pour recevoir ce deuxième signal et pour ensuite le traduire en une variation de ladite vitesse de rotation dudit moteur lorsque la plateforme mobile passe par ladite deuxième position de référence pour s'approcher de ladite première position.This need is overcome by having a lifting device as described at the beginning, characterized in that it comprises a first control means connected to a regulator of said rotational speed of said first pulley and to a first movable sensor mounted on one of the pylons and free to move along the pylon between said head end and said foot end of said pylon, said first sensor being arranged to, on the one hand, determine a first position in the three-dimensional space and, d on the other hand, coding said first position into a first signal intended to be sent to said control means, said first control means being arranged to process said first signal as input, calculating a second remote reference position at a second predetermined threshold height of said first position, and then encode said second reference position into a second signal sent to the regulator arranged to receive this second signal and then translate it into a variation of said rotational speed of said motor when the mobile platform passes through said second reference position to approach said first position.

Ainsi, le dispositif élévateur selon l'invention permet d'adapter en temps réel la vitesse de descente de la plateforme et de moduler cette vitesse lorsque la plateforme approche le niveau de chargement ou de déchargement du bateau, c'est-à-dire lorsque la distance entre la plateforme et la première position, laquelle première position correspond au niveau de chargement ou de déchargement du bateau, correspond à une hauteur égale ou inférieure à la deuxième hauteur seuil prédéterminée.Thus, the lifting device according to the invention makes it possible to adapt in real time the speed of descent of the platform and of modulate this speed when the platform approaches the level of loading or unloading of the boat, that is to say when the distance between the platform and the first position, which first position corresponds to the level of loading or unloading of the boat, corresponds at a height equal to or less than the second predetermined threshold height.

Dans ce contexte, il a été observé de manière tout à fait remarquable et surprenante que l'automatisation du contrôle de la vitesse de descente de la plateforme du dispositif élévateur permettait de bénéficier d'un gain de temps et de coûts considérable lors du chargement ou du déchargement du bateau, l'opérateur du dispositif élévateur ne devant plus ajuster manuellement la descente de la plateforme, la régulation de la vitesse de déplacement de cette dernière étant entièrement automatisée.In this context, it was remarkably remarkable and surprising that the automation of the control of the descent speed of the platform of the lifting device allowed to benefit from considerable time and cost savings during the loading or unloading the boat, the operator of the elevator device not having to manually adjust the descent of the platform, the regulation of the speed of movement of the latter being fully automated.

Avantageusement, le dispositif selon l'invention est caractérisé en ce que ledit pylône supporte, à un deuxième niveau situé en-dessous dudit premier niveau, une deuxième poulie, en rotation libre, pour former une première paire de poulies reliées entre elles par ledit premier moyen de transmission, ledit moyen de transmission présentant une deuxième extrémité reliée à ladite face basale de ladite plateforme qui ferme ledit premier moyen de transmission, ledit premier moyen de transmission étant agencé pour déplacer ladite plateforme et entraîner ladite deuxième poulie lorsque ladite première poulie est mise en rotation.Advantageously, the device according to the invention is characterized in that said pylon supports, at a second level located below said first level, a second pulley, in free rotation, to form a first pair of pulleys interconnected by said first transmission means, said transmission means having a second end connected to said base face of said platform which closes said first transmission means, said first transmission means being arranged to move said platform and drive said second pulley when said first pulley is put in rotation.

Ainsi, lors de la descente, lorsque la première poulie est mise en mouvement de rotation, par exemple dans le sens des aiguilles d'une montre, elle exerce une traction vers le bas sur le moyen de transmission et une tension proportionnelle à la vitesse de rotation de la poulie orientée vers la seconde poulie est générée à partir de la deuxième extrémité du moyen de transmission reliée à la face basale de la plateforme. Cette tension amorce la descente de la plateforme qui est mise mouvement de translation vers le bas.Thus, during the descent, when the first pulley is rotated, for example in the direction of clockwise, it exerts a pull down on the transmission means and a voltage proportional to the speed of rotation. rotation of the pulley facing the second pulley is generated from the second end of the transmission means connected to the basal face of the platform. This tension initiates the descent of the platform which is translational movement downward.

Le mouvement de descente de la plateforme mobile est dès lors gouverné par la mise en rotation de la première poulie à une vitesse de rotation et plus par la gravité seule.The downward movement of the movable platform is then governed by rotating the first pulley at a rotational speed and more by gravity alone.

Lors de la descente, les forces de frottement générées par exemple par le mouvement de la plateforme le long du pylône et qui tendent à freiner ce mouvement de descente peuvent à tout moment être compensées par une augmentation de la vitesse de rotation de la première poulie.During the descent, the friction forces generated for example by the movement of the platform along the pylon and which tend to slow down this downward movement can at any time be compensated by an increase in the speed of rotation of the first pulley.

Un autre avantage du dispositif élévateur selon l'invention est qu'il permet le contrôle fin du déplacement de la plateforme, c'est-à-dire un contrôle permettant d'adapter instantanément la vitesse de mouvement de la plateforme lorsque le dispositif élévateur est en fonctionnement, permettant ainsi par exemple de ralentir la plateforme lorsque cette dernière approche d'un niveau de chargement ou de déchargement du véhicule et de réduire ainsi le risque de collisions entre ce dernier et ladite plateforme.Another advantage of the lifting device according to the invention is that it allows the fine control of the displacement of the platform, that is to say a control to instantly adapt the speed of movement of the platform when the lifting device is in operation, thus allowing for example to slow down the platform when it approaches a level of loading or unloading of the vehicle and thus reduce the risk of collisions between the latter and said platform.

Avantageusement, le dispositif comprend un deuxième pylône pour former avec ledit premier pylône une paire de pylônes, ledit deuxième pylône supportant une première poulie à un premier niveau et une deuxième poulie à un deuxième niveau situé en-dessous dudit premier niveau, lesdites poulies étant reliées entre elles par un deuxième moyen de transmission, ledit moyen de transmission comprenant une première extrémité reliée à ladite face apicale de ladite plateforme et une deuxième extrémité reliée à ladite face basale de ladite plateforme, ledit deuxième moyen de transmission étant agencé pour déplacer ladite plateforme entre ladite position haute et entraîner ladite deuxième poulie lorsque ladite première poulie est mise en rotation.Advantageously, the device comprises a second pylon for forming with said first pylon a pair of pylons, said second pylon supporting a first pulley at a first level and a second pulley at a second level located below said first level, said pulleys being connected between them by a second transmission means, said transmission means comprising a first end connected to said apical face of said platform and a second end connected to said base face of said platform, said second transmission means being arranged to move said platform between said high position and driving said second pulley when said first pulley is rotated.

La présence d'un deuxième pylône permet d'une part de répartir la charge portée par la plateforme sur un appui supplémentaire qu'est ledit deuxième pylône, stabilisant ainsi ledit dispositif élévateur, et, d'autre part, la présence d'une première poulie rotative additionnelle montée sur le deuxième pylône permet de répartir le travail de traction sur deux poulies au lieu d'une seule et donc d'augmenter d'un facteur au moins double la charge sur la plateforme à travail égal exercé par chaque poulie.The presence of a second tower makes it possible, on the one hand, to distribute the load carried by the platform on an additional support that is said second tower, thus stabilizing said lifting device, and, on the other hand, the presence of a first additional rotary pulley mounted on the second pylon can distribute the traction work on two pulleys instead of one and thus increase by a factor at least double the load on the platform for equal work exerted by each pulley.

Dans une forme de réalisation particulière, ladite première poulie est placée au niveau de l'extrémité de tête dudit pylône de sorte que si le dispositif est placé en bout de quai de voie navigable, ladite première poulie rotative soit suffisamment éloignée du niveau d'eau pour éviter tout contact avec l'eau en cas par exemple de crue, cette première poulie étant en particulier destinée à être reliée à un moteur.In a particular embodiment, said first pulley is placed at the head end of said pylon so that if the device is placed at the end of the waterway dock, said first rotary pulley is sufficiently far from the water level to avoid any contact with the water in case of example of flood, this first pulley being in particular intended to be connected to a motor.

Dans un mode de réalisation préférentiel du dispositif selon l'invention, le premier et le deuxième pylônes de ladite paire de pylônes sont reliés entre eux au niveau de leur extrémité de tête par un essieu rotatif autour duquel lesdites premières poulies de chacun des pylônes sont mises en rotation de manière synchronisée.In a preferred embodiment of the device according to the invention, the first and second pylons of said pair of pylons are interconnected at their head end by a rotating axle around which said first pulleys of each of the pylons are placed. in rotation synchronously.

La présence de cet essieu permet, d'une part, de stabiliser les deux pylônes en les rendant solidaires l'un de l'autre et d'autre part, d'assurer la rotation synchrone des premières poulies de telle sorte que chaque moyen de transmission entraine en mouvement de translation de manière synchronisée la plateforme.The presence of this axle makes it possible, on the one hand, to stabilize the two pylons by making them integral with each other and, on the other hand, to ensure the synchronous rotation of the first pulleys so that each means of transmission drives the platform in synchronized motion.

Dans une forme de réalisation particulièrement avantageuse du dispositif selon l'invention, au moins un pylône est muni d'un rail de guidage et dans lequel ladite plateforme comprend au moins un premier roulement agencé pour être placé dans ledit rail.In a particularly advantageous embodiment of the device according to the invention, at least one pylon is provided with a guide rail and wherein said platform comprises at least one first bearing arranged to be placed in said rail.

De préférence, ledit deuxième pylône est muni d'un rail de guidage et dans lequel ladite plateforme comprend au moins un deuxième roulement agencé pour être placé dans ledit deuxième rail.Preferably, said second pylon is provided with a guide rail and wherein said platform comprises at least one second bearing arranged to be placed in said second rail.

La présence de roulements sur la plateforme montés dans les rails permet de guider le mouvement de la plateforme selon un axe de translation parallèle à chaque pylône, empêchant ainsi d'éventuels mouvements de balancement de la plateforme selon un axe perpendiculaire audit axe de translation. Ces mouvements de balancement créent des tensions de torsion supplémentaires sur le moyen de transmission qui, à terme, peuvent conduire à la rupture de ce dernier.The presence of bearings on the platform mounted in the rails makes it possible to guide the movement of the platform along an axis of translation parallel to each pylon, thus preventing possible rocking movements of the platform along an axis perpendicular to said translation axis. These swinging movements create additional torsion stresses on the transmission means which, ultimately, can lead to the rupture of the latter.

De préférence, le dispositif élévateur selon l'invention est destiné à être placé en bout de quai de voies navigables ou ferrées.Preferably, the lifting device according to the invention is intended to be placed at the end of the wharf of waterways or railways.

Avantageusement, le dispositif est caractérisé en ce qu'il est agencé pour être placé à bout de quai de voie navigable présentant un niveau d'eau, et en ce qu'il est agencé de façon à ce qu'un premier plan tangent à ladite face apicale de ladite plateforme mobile soit substantiellement parallèle à un deuxième plan passant par un premier niveau correspondant à une position basse de la plateforme et à un troisième plan tangent passant par un deuxième niveau correspondant à une position haute de la plateforme et agencé pour être distant du niveau d'eau d'une première hauteur supérieure ou égale à 7 mètres, de préférence entre 7 et 10 mètres.Advantageously, the device is characterized in that it is arranged to be placed at the end of a waterway platform having a water level, and in that it is arranged so that a first plane tangent to said apical face of said mobile platform is substantially parallel to a second plane passing through a first level corresponding to a low position of the platform and a third tangent plane passing through a second level corresponding to a high position of the platform and arranged to be remote water level of a first height greater than or equal to 7 meters, preferably between 7 and 10 meters.

La hauteur de 7 mètre est la hauteur minimale souhaitable pour éviter une collision entre un bateau qui se dirigerait vers le quai et la plateforme qui au repos, est dans la position haute de sécurité, de sorte qu'il soit assuré que cette dernière ne puisse pas entrer en contact avec la coque du bateau.The height of 7 meters is the minimum desirable height to avoid a collision between a boat heading for the platform and the platform at rest, is in the high position of safety, so that it is assured that the latter can not not come in contact with the hull of the boat.

Avantageusement, le dispositif élévateur est caractérisé en ce qu'il comprend un premier système de sécurité comprenant au moins un premier ressort agencé pour relier ladite face apicale de la plateforme mobile à ladite première extrémité du moyen de transmission, ledit premier ressort étant associé à un deuxième capteur d'élongation du ressort, ledit système de sécurité comprenant un deuxième moyen de contrôle relié audit capteur d'élongation et à un module d'arrêt d'urgence agencé pour stopper ladite rotation de ladite première poulie, ledit deuxième moyen de contrôle étant agencé pour traiter un troisième signal envoyé par ledit capteur d'élongation et correspondant à une valeur d'élongation mesurée par ledit capteur d'élongation, pour comparer ce troisième signal à un deuxième signal de référence correspondant à une valeur d'élongation seuil et pour envoyer un quatrième signal vers ledit module d'arrêt d'urgence agencé pour traduire ledit quatrième signal en un arrêt de la rotation de ladite première poulie.Advantageously, the lifting device is characterized in that it comprises a first safety system comprising at least a first spring arranged to connect said apical face of the mobile platform to said first end of the transmission means, said first spring being associated with a second spring elongation sensor, said security system comprising a second control means connected to said elongation sensor and an emergency stop module arranged to stop said rotation of said first pulley, said second control means being arranged to process a third signal sent by said elongation sensor and corresponding to an elongation value measured by said elongation sensor, to compare this third signal with a second reference signal corresponding to a threshold elongation value and for sending a fourth signal to said emergency stop module arranged to translate said fourth signal into a stop of rotation of said first pulley.

De cette façon, lorsque la plateforme se bloque pendant son mouvement de montée, le premier ressort reliant la face apicale de la plateforme à la première extrémité du moyen de transmission subit une élongation vers le haut induite par la force de traction du moyen de rotation entraîné par la première poulie en rotation. Cette élongation est détectée par le capteur d'élongation et traduite par un arrêt de la rotation de la première poulie lorsque la valeur d'élongation est supérieure à une valeur d'élongation seuil.In this way, when the platform locks during its upward movement, the first spring connecting the apical face of the platform to the first end of the transmission means undergoes an upward elongation induced by the pulling force of the driven rotation means. by the first rotating pulley. This elongation is detected by the elongation sensor and translated by stopping the rotation of the first pulley when the elongation value is greater than a threshold elongation value.

Dans un mode préférentiel de réalisation, ledit dispositif élévateur selon l'invention est caractérisé en ce ledit premier système de sécurité comprend au moins un deuxième ressort agencé pour relier ladite face basale de ladite plateforme mobile à ladite deuxième extrémité dudit moyen de transmission, ledit deuxième ressort étant associé à un troisième capteur d'élongation du ressort relié audit deuxième moyen de contrôle.In a preferred embodiment, said elevator device according to the invention is characterized in that said first security system comprises at least one second spring arranged to connect said base face of said mobile platform to said second end of said transmission means, said second spring being associated with a third spring elongation sensor connected to said second control means.

Si le blocage de la plateforme a lieu lors de la descente, le deuxième ressort reliant la face basale de la plateforme à la deuxième extrémité du moyen de transmission subit une élongation vers le bas induite par la force de traction du moyen de rotation entraîné par la première poulie en rotation. Cette élongation est détectée par le capteur d'élongation et traduite par un arrêt de la rotation de la première poulie lorsque la valeur d'élongation est supérieure à une valeur d'élongation seuil.If the blocking of the platform takes place during the descent, the second spring connecting the basal face of the platform to the second end of the transmission means undergoes a downward elongation induced by the traction force of the rotation means driven by the first pulley in rotation. This elongation is detected by the elongation sensor and translated by stopping the rotation of the first pulley when the elongation value is greater than a threshold elongation value.

Eventuellement, ledit dispositif selon l'invention est caractérisé en ce qu'il comprend un deuxième système de sécurité dans lequel ladite face basale de la plateforme mobile est munie d'un quatrième capteur de contact qui est un boudin malléable relié audit deuxième moyen de contrôle.Optionally, said device according to the invention is characterized in that it comprises a second security system in which said basal face of the mobile platform is provided with a fourth contact sensor which is a malleable rod connected to said second control means.

Lors de la descente, si la face apicale de la plateforme se rapproche par exemple de la limite supérieure de la coque à une distance telle que le boudin malléable entre en contact avec la coque et est déformé, le capteur de contact enregistre une déformation qu'il transforme en un cinquième signal envoyé vers le deuxième moyen de contrôle qui traite ce signal et commande l'arrêt du dispositif.During the descent, if the apical face of the platform is approaching for example the upper limit of the hull at a distance such that the malleable rod contacts the shell and is deformed, the contact sensor records a deformation that it transforms into a fifth signal sent to the second control means which processes this signal and controls the shutdown of the device.

Dans un mode préférentiel de réalisation, ledit dispositif élévateur est caractérisé qu'au moins un pylône, de préférence chaque pylône comprend une série d'encoches alignées le long d'une arête d'une bande de roulement du rail, lesdites encoches étant incluses dans un quatrième plan perpendiculaire au premier plan tangent de la face apicale de ladite plateforme mobile, ladite plateforme présentant deux faces latérales opposées l'une à l'autre et agencées pour relier ladite face apicale à ladite face basale de la plateforme mobile, chacune des faces latérales présentant un cinquième plan tangent parallèle au quatrième plan dans lequel sont alignées les encoches, chacune des faces étant en outre munie d'au moins un stoppe-chute agencé pour s'emboiter dans lesdites encoches, ledit stoppe-chute étant relié à un vérin pneumatique ou magnétique agencé pour engager ledit stoppe-chute dans une des encoches, le vérin étant relié audit deuxième moyen de contrôle agencé pour commander le vérin lorsque la rotation de la poulie est stoppée.In a preferred embodiment, said lifting device is characterized in that at least one pylon, preferably each pylon comprises a series of notches aligned along an edge of a tread of the rail, said notches being included in a fourth plane perpendicular to the first tangent plane of the apical face of said mobile platform, said platform having two opposite lateral faces to each other and arranged to connect said apical face to said basal face of the mobile platform, each of the faces lateral elements having a fifth tangent plane parallel to the fourth plane in which the notches are aligned, each of the faces being further provided with at least one stopper-chute arranged to fit into said notches, said stopper-chute being connected to a jack pneumatic or magnetic arranged to engage said stopp-fall in one of the notches, the jack being connected to said second means of c control arranged to control the cylinder when the rotation of the pulley is stopped.

De cette façon, la présence des encoches dans lesquelles peuvent se loger un stoppe-chute constitue un parachute permettant de maintenir la plateforme immobile dès lors que cette dernière est arrêtée, et donc une intervention sur le dispositif en toute sécurité.In this way, the presence of the notches in which can be lodged a stopp-drop is a parachute to maintain the platform immobile when it is stopped, and therefore an intervention on the device safely.

D'autres formes de réalisation du dispositif suivant l'invention sont indiquées dans les revendications annexées.Other embodiments of the device according to the invention are indicated in the appended claims.

D'autres caractéristiques, détails et avantages de l'invention ressortiront de la description donnée ci-après, à titre non limitatif et en faisant référence aux dessins annexés.

  • La figure 1 est une vue en perspective du dispositif selon l'invention.
  • La figure 2 est une vue de profil du dispositif selon l'invention placé en bout de quai d'une voie navigable.
  • La figure 3 est une vue d'en dessous d'une première partie d'un mode de réalisation particulier du dispositif selon l'invention.
  • La figure 4 illustre un dispositif de régulation de la vitesse de déplacement de la plateforme dans un mode préférentiel de réalisation du dispositif élévateur.
  • La figure 5 est une vue en perspective de côté d'une deuxième partie d'un deuxième mode de réalisation particulier du dispositif selon l'invention.
  • La figure 6 est une vue en perspective d'un troisième mode de réalisation particulier du dispositif selon l'invention.
  • La figure 7 est une vue du dessus d'une troisième partie d'un quatrième mode de réalisation particulier du dispositif selon l'invention.
Other features, details and advantages of the invention will become apparent from the description given below, without limitation and with reference to the accompanying drawings.
  • The figure 1 is a perspective view of the device according to the invention.
  • The figure 2 is a profile view of the device according to the invention placed at the end of a wharf of a waterway.
  • The figure 3 is a view from below of a first part of a particular embodiment of the device according to the invention.
  • The figure 4 illustrates a device for regulating the speed of movement of the platform in a preferred embodiment of the elevator device.
  • The figure 5 is a side perspective view of a second part of a second particular embodiment of the device according to the invention.
  • The figure 6 is a perspective view of a third particular embodiment of the device according to the invention.
  • The figure 7 is a view from above of a third part of a fourth particular embodiment of the device according to the invention.

Sur les figures, les éléments identiques ou analogues portent les mêmes références.In the figures, identical or similar elements bear the same references.

La figure 1 est une vue en perspective du dispositif selon l'invention 1 comprenant une paire de pylônes 2, 3 verticaux parallèles entre eux, chaque pylône comprenant une extrémité de tête 4 et une extrémité de pied 5.The figure 1 is a perspective view of the device according to the invention 1 comprising a pair of vertical pylons 2, 3 parallel to each other, each pylon comprising a leading end 4 and a foot end 5.

Le dispositif comprend en outre une plateforme mobile 6 agencée pour se déplacer entre l'extrémité de tête 4 et de pied 5 de chaque pylône, et présentant une face apicale 7 et une face basale 8 opposée à la face apicale 7. Cette plateforme mobile 6 est montée sur chacun des pylônes, de façon à ce qu'elle soit placée entre eux. De préférence, un premier plan tangent à la face apicale 7 de la plateforme mobile 5 est orienté perpendiculairement à un axe A parallèle à chaque pylône.The device further comprises a mobile platform 6 arranged to move between the leading end 4 and foot 5 of each pylon, and having an apical face 7 and a basal face 8 opposite to the apical face 7. This mobile platform 6 is mounted on each of the pylons, so that it is placed between them. Preferably, a first plane tangent to the apical face 7 of the platform mobile 5 is oriented perpendicular to an axis A parallel to each pylon.

Comme l'illustre la figure 2, le dispositif élévateur est en particulier destiné à être placé en bout de quai 9, par exemple d'une voie navigable comme un fleuve ou une rivière présentant un niveau d'eau 10, pour charger et décharger des bateaux, et est agencé sur le quai 9 de façon à ce que le premier plan tangent à la face apicale 7 de la plateforme mobile 6 soit substantiellement parallèle à un deuxième plan passant par un premier niveau 11 correspondant à une position basse de la plateforme et à un troisième plan tangent passant par un deuxième niveau 12 correspondant à une position haute de la plateforme et distant du niveau d'eau 10 d'une première hauteur H1 supérieure ou égale à 7 mètres.As illustrated by figure 2 the lifting device is in particular intended to be placed at the end of platform 9, for example of a waterway such as a river or a river having a water level 10, for loading and unloading boats, and is arranged on the platform 9 so that the first plane tangential to the apical face 7 of the mobile platform 6 is substantially parallel to a second plane passing through a first level 11 corresponding to a lower position of the platform and to a third tangent plane passing through a second level 12 corresponding to a high position of the platform and remote from the water level 10 of a first height H1 greater than or equal to 7 meters.

De préférence, la position basse 11 se situe au niveau de l'extrémité de pied 5 de chaque pylône et est distante du niveau d'eau d'une hauteur d'au moins 10 centimètres, de préférence comprise entre 10 et 50 centimètre.Preferably, the low position 11 is at the foot end 5 of each pylon and is distant from the water level by a height of at least 10 centimeters, preferably between 10 and 50 centimeters.

Chaque pylône supporte, d'une part, sur son extrémité de tête 5 une première poulie 13 qui est une poulie crantée ou un pignon d'engrenage, reliée par un bras de transmission 14 à un moteur 15 agencé pour mettre en rotation la première poulie 13 à une vitesse de rotation autour d'un premier axe fixe de rotation r1 traversant le bras de transmission, la première poulie du premier pylône faisant face à la première poulie du deuxième pylône.Each pylon supports, on the one hand, on its leading end 5 a first pulley 13 which is a toothed pulley or a pinion gear, connected by a transmission arm 14 to a motor 15 arranged to rotate the first pulley 13 at a speed of rotation around a first fixed axis of rotation r 1 passing through the transmission arm, the first pulley of the first pylon facing the first pulley of the second pylon.

D'autre part, chaque pylône supporte en outre une deuxième poulie 16 en rotation libre autour d'un deuxième axe fixe de rotation r2 au niveau de l'extrémité de pied. La deuxième poulie est placée sur le pylône de façon à être alignée à la première poulie selon l'axe A parallèle à chaque pylône, de façon à ce que la deuxième poulie du premier pylône fasse face à la deuxième poulie du deuxième pylône.On the other hand, each tower also supports a second pulley 16 in free rotation around a second fixed axis of rotation r 2 at the foot end. The second pulley is placed on the pylon so as to be aligned with the first pulley along the axis A parallel to each pylon, so that the second pulley of the first pylon faces the second pulley of the second pylon.

Le dispositif élévateur 1 comprend par ailleurs un moyen de transmission 17, qui est une chaîne ou une courroie crantée, agencé pour être monté sur la première poulie 13 et la deuxième poulie 16, et coopérer avec elles, et qui présente, d'une part, une première extrémité 18 reliée à l'aide d'un premier moyen de jonction 19 à un premier point de jonction 20 sur la face apicale 7 de la plateforme mobile 6, et, d'autre part, une deuxième extrémité 21 reliée à l'aide d'un deuxième moyen de jonction 22 à un deuxième point de jonction 23 sur la face basale 8 de la plateforme mobile, la plateforme mobile 5, fermant ainsi ledit moyen de transmission 16.The lifting device 1 furthermore comprises a transmission means 17, which is a chain or a toothed belt, arranged for being mounted on the first pulley 13 and the second pulley 16, and cooperating with them, and which has, on the one hand, a first end 18 connected by means of a first connecting means 19 to a first junction point 20 on the apical face 7 of the mobile platform 6, and, secondly, a second end 21 connected by means of a second connecting means 22 to a second junction point 23 on the basal face 8 of the mobile platform, the mobile platform 5, thus closing said transmission means 16.

Dans un premier mode préférentiel de réalisation du dispositif élévateur, la deuxième poulie 16 est montée dans une enveloppe étanche partiellement fermée comprenant une zone d'ouverture orientée en direction de la face basale de la plateforme pour former un accès au moyen de transmission à la deuxième poulie sur laquelle il est monté.In a first preferred embodiment of the lifting device, the second pulley 16 is mounted in a partially closed sealed envelope comprising an opening zone oriented towards the basal face of the platform to form an access to the transmission means to the second pulley on which he climbed.

L'enveloppe étanche permet ainsi de protéger de l'eau l'engrenage formé par le moyen de transmission monté sur la deuxième poulie et d'éviter ainsi un risque de corrosion de cet engrenage par la formation rouille sur ce dernier qui peut nuire au bon fonctionnement du dispositif, ce risque de corrosion étant particulièrement élevé lorsque la voie d'eau est de l'eau de mer.The sealed envelope thus makes it possible to protect the gear formed by the transmission means mounted on the second pulley from water and thus to prevent a risk of corrosion of this gear by the formation of rust on the latter which can harm the good operation of the device, this risk of corrosion being particularly high when the waterway is seawater.

Dans un deuxième mode préférentiel de réalisation du dispositif élévateur selon l'invention, chaque pylône est de préférence un rail de guidage 24 dont la section transversale est en forme de U comprenant une paire de bandes de roulement opposées l'une à l'autre 25, 26 et la plateforme comprend une paire de roues 27 en rotation libre dont chaque roue est agencée pour être montée dans la cavité 28 formée par la section en U de chacun des rails, comme illustré à la figure 3. Une fois montée dans la cavité 28, le bandage 29 de chaque roue est mis en contact avec une face interne de chaque de roulement 25, 26, la face interne faisant face au bandage 29 de la roue 27, de telle sorte que lorsque la plateforme mobile est en mouvement, la roue se met en rotation libre selon un axe parallèle à chaque bande de roulement, guidant ainsi le mouvement de la plateforme le long du rail.In a second preferred embodiment of the lifting device according to the invention, each pylon is preferably a guide rail 24 whose cross section is U-shaped comprising a pair of treads opposite to each other 25 , And the platform comprises a pair of freely rotating wheels 27, each wheel of which is arranged to be mounted in the cavity 28 formed by the U-section of each of the rails, as illustrated in FIG. figure 3 . Once mounted in the cavity 28, the tire 29 of each wheel is brought into contact with an inner face of each bearing 25, 26, the inner face facing the tire 29 of the wheel 27, so that when the platform mobile is moving, the wheel is rotating free along an axis parallel to each tread, thus guiding the movement of the platform along the rail.

Dans un mode de réalisation particulier tel qu'illustré à la figure 4, le dispositif élévateur comprend en outre un premier moyen de contrôle 30 relié par un premier moyen de connexion à un régulateur 31 de la vitesse de rotation de la première poulie et par un deuxième moyen de connexion à un premier capteur mobile 32 monté sur un des pylônes et libre de se déplacer le long du pylône entre l'extrémité de tête 4 et l'extrémité de pied 5.In a particular embodiment as illustrated in FIG. figure 4 , the elevator device further comprises a first control means 30 connected by a first connection means to a regulator 31 of the rotational speed of the first pulley and by a second connection means to a first movable sensor 32 mounted on one of the pylons and free to move along the pylon between the head end 4 and the foot end 5.

Ce premier capteur est agencé pour, d'une part, déterminer une première position dans l'espace tridimensionnel et, d'autre part, coder cette première position en un premier signal destiné à être envoyé par le deuxième moyen de connexion vers le moyen de contrôle.This first sensor is arranged to, on the one hand, determine a first position in the three-dimensional space and, on the other hand, to code this first position into a first signal intended to be sent by the second connection means to the means of communication. control.

Le type de capteur préféré est un capteur de position laser.The preferred type of sensor is a laser position sensor.

Cette première position correspond à un troisième niveau variable 33 qui peut être par exemple un niveau de chargement ou de déchargement situé entre la position haute 12 et la position basse 11 de la plateforme mobile 5. Typiquement, ce troisième niveau variable 33 peut par exemple correspondre au niveau de déchargement d'un bateau associé par exemple au niveau auquel se situe le ponton du bateau ou à la limite supérieure de la coque 34 d'une péniche.This first position corresponds to a third variable level 33 which can be for example a level of loading or unloading located between the high position 12 and the low position 11 of the mobile platform 5. Typically, this third variable level 33 can for example correspond at the unloading level of a boat associated for example at the level at which the pontoon of the boat is located or at the upper limit of the hull 34 of a barge.

Le premier moyen de contrôle 30 est agencé pour traiter en entrée le premier signal, calculer une deuxième position de référence 35 distante à une deuxième hauteur seuil H2 prédéterminée, par exemple comprise dans une plage de valeurs allant de 0,5 mètre à 2 mètre, de préférence allant de 0,5 mètre à 1,0 mètre, de la position du troisième niveau variable 33 et ensuite coder cette deuxième position de référence en un deuxième signal envoyé par le premier moyen de connexion vers le régulateur 31 agencé pour recevoir ce deuxième signal et pour ensuite le traduire par exemple en une réduction de la vitesse de rotation du moteur et donc de la vitesse de déplacement de la plateforme mobile lorsque cette dernière passe par la position de référence 35 pour s'approcher de la position du troisième niveau variable 33.The first control means 30 is arranged to process the first signal input, calculate a second reference position 35 distant to a second predetermined threshold height H 2, for example in a range of values ranging from 0.5 meters to 2 meters, preferably from 0.5 to 1.0 meters, from the position of the third variable level 33 and then code this second reference position into a second signal sent by the first connection means to the regulator 31 arranged to receive this second signal and then translate it for example into a reduction of the rotational speed of the engine and therefore the speed of movement of the mobile platform when the latter passes through the reference position 35 to approach the position of the third variable level 33.

Ce dispositif permet ainsi de contrôler et d'adapter systématiquement la vitesse de descente de la plateforme mobile en fonction du niveau de déchargement ou de chargement qui ne cesse de descendre ou de monter au fur et à mesure que le bateau est chargé ou déchargé.This device thus makes it possible to systematically control and adapt the speed of descent of the mobile platform as a function of the level of unloading or loading which continues to descend or rise as the boat is loaded or unloaded.

Dans un autre mode de réalisation préférentiel, le dispositif selon l'invention comprend un premier système de sécurité comprenant un premier ressort 36 agencé pour relier la face apicale 7 de la plateforme mobile 6 à la première extrémité 18 du moyen de transmission 17, ce premier ressort étant associé à un deuxième capteur 37 d'élongation du ressort.In another preferred embodiment, the device according to the invention comprises a first security system comprising a first spring 36 arranged to connect the apical face 7 of the mobile platform 6 to the first end 18 of the transmission means 17, this first spring being associated with a second sensor 37 of elongation of the spring.

Le système de sécurité comprend un deuxième moyen de contrôle 38 relié au capteur d'élongation 37 par un troisième moyen de connexion et à un module d'arrêt d'urgence 39 par un quatrième moyen de connexion, ledit module d'arrêt d'urgence étant agencé pour stopper la rotation de ladite première poulie et donc le mouvement de la plateforme, ce moyen de contrôle étant en outre agencé pour traiter un troisième signal envoyé par ledit capteur d'élongation par le troisième moyen de connexion et correspondant à une valeur d'élongation mesurée par le capteur d'élongation, pour comparer ce troisième signal à un deuxième signal de référence correspondant à une valeur d'élongation seuil et pour envoyer un quatrième signal par le quatrième moyen de connexion vers le module d'arrêt d'urgence agencé pour traduire ce quatrième signal en un arrêt de la rotation de la première poulie et donc du mouvement de la plateforme lorsque la valeur d'élongation est supérieure à la valeur d'élongation seuil.The security system comprises a second control means 38 connected to the elongation sensor 37 by a third connection means and to an emergency stop module 39 by a fourth connection means, said emergency stop module. being arranged to stop the rotation of said first pulley and therefore the movement of the platform, this control means being further arranged to process a third signal sent by said elongation sensor by the third connection means and corresponding to a value of d elongation measured by the elongation sensor, for comparing this third signal with a second reference signal corresponding to a threshold elongation value and for sending a fourth signal by the fourth connection means to the emergency stop module arranged to translate this fourth signal into a stop of the rotation of the first pulley and therefore of the movement of the platform when the elongation value is greater than at the value of threshold elongation.

Préférentiellement, le système de sécurité comprend un deuxième ressort 40 agencé pour relier la face basale 8 de la plateforme mobile à la deuxième extrémité 21 du moyen de transmission, ce deuxième ressort étant associé à un troisième capteur 41 d'élongation du ressort relié audit deuxième moyen de contrôle par un cinquième moyen de connexion.Preferably, the security system comprises a second spring 40 arranged to connect the basal face 8 of the mobile platform to the second end 21 of the transmission means. second spring being associated with a third spring elongation sensor 41 connected to said second control means by a fifth connection means.

Avantageusement, le dispositif est muni d'un deuxième système de sécurité consistant en ce que la face basale de la plateforme mobile est munie d'un quatrième capteur de contact 42 qui est un boudin malléable relié par un sixième moyen de connexion au deuxième moyen de contrôle. Lors de la descente, si la face apicale de la plateforme se rapproche par exemple de la limite supérieure de la coque à une distance telle que le boudin malléable entre en contact avec la coque et est déformé, le capteur de contact enregistre une déformation qu'il transforme en un cinquième signal envoyé vers le deuxième moyen de contrôle qui traite ce signal et commande l'arrêt du dispositif par l'intermédiaire du module d'arrêt d'urgence.Advantageously, the device is provided with a second security system consisting in that the basal face of the mobile platform is provided with a fourth contact sensor 42 which is a malleable rod connected by a sixth connecting means to the second means of contact. control. During the descent, if the apical face of the platform is approaching for example the upper limit of the hull at a distance such that the malleable rod contacts the shell and is deformed, the contact sensor records a deformation that it transforms into a fifth signal sent to the second control means which processes this signal and controls the stopping of the device via the emergency stop module.

Dans un autre mode particulier de réalisation du dispositif élévateur tel qu'illustré à la figure 5, chaque pylône comprend une série d'encoches 43 alignées le long d'une arête d'une bande de roulement du rail, ces encoches étant incluses dans un quatrième plan perpendiculaire au premier plan tangent de la face apicale de la plateforme mobile.In another particular embodiment of the lifting device as illustrated in FIG. figure 5 each pylon comprises a series of notches 43 aligned along an edge of a tread of the rail, these notches being included in a fourth plane perpendicular to the first tangential plane of the apical face of the mobile platform.

La plafieforme présente en outre deux faces latérales 44, 45 opposées l'une à l'autre et agencées pour relier la face apicale 7 à la face basale 8 de la plateforme mobile 6, chacune des faces latérales présentant un cinquième plan tangent parallèle au quatrième plan dans lequel sont alignées les encoches 43.The ceiling shape also has two lateral faces 44, 45 opposite one another and arranged to connect the apical face 7 to the basal face 8 of the mobile platform 6, each of the lateral faces having a fifth tangent plane parallel to the fourth plan in which are aligned the notches 43.

Chacune des faces latérales est en outre munie d'un stoppe-chute 46 agencé pour s'emboiter dans les encoches, ledit stoppe-chute étant relié à un vérin pneumatique 47 ou magnétique agencé pour engager ledit stoppe-chute dans une des encoches, le vérin étant relié au deuxième moyen de contrôle agencé pour commander le vérin lorsque la rotation de la poulie est stoppée.Each of the lateral faces is further provided with a stopper-chute 46 arranged to fit into the notches, said stopper-chute being connected to a pneumatic cylinder 47 or magnetic arranged to engage said stopp-drop in one of the notches, the cylinder being connected to the second control means arranged to control the cylinder when the rotation of the pulley is stopped.

Dans un mode particulier de réalisation de l'invention tel que montré à la figure 7, le dispositif est caractérisé en ce que, lorsque la plateforme à vide est en position haute, la première extrémité 18 dudit moyen de transmission 17 est à une hauteur H3 de la première poulie 13, cette hauteur H3 définit une partie du moyen de transmission 48 à laquelle est relié un capteur de traction/compression 49 relié solidairement à un support du moteur et agencé pour être connecté à un actionneur 50 relié par une de ses extrémités à la partie du moyen de transmission 48.In a particular embodiment of the invention as shown in FIG. figure 7 , the device is characterized in that, when the vacuum platform is in the high position, the first end 18 of said transmission means 17 is at a height H3 of the first pulley 13, this height H3 defines a portion of the transmission means 48 to which is connected a traction / compression sensor 49 integrally connected to a motor support and arranged to be connected to an actuator 50 connected at one of its ends to the part of the transmission means 48.

Lorsque la plateforme est à vide, l'actionneur est positionné à un quatrième niveau initial.When the platform is empty, the actuator is positioned at a fourth initial level.

Si la plateforme est chargée, la charge, par gravité, exerce une force de tension sur le moyen de transmission qui se tend par le bas. Il en résulte une élongation par le bas de la partie du moyen de transmission 48 et la première extrémité 18 du moyen de transmission est distante de la première poulie 13 d'une hauteur H4 supérieure à la hauteur H3. L'élongation correspond à une valeur ΔH qui est la différence entre la hauteur H4 et la hauteur H3. Le capteur de traction compression convertit cette valeur d'élongation ΔH en une mesure du poids de la charge amenée sur la plateforme. De cette manière, le capteur permet de mesurer le poids de la charge aussi bien lors du chargement que lors du déchargement de celle-ci sur la plateforme mobile 6.If the platform is loaded, the load, by gravity, exerts a force of tension on the transmission means that tends to the bottom. This results in an elongation from the bottom of the portion of the transmission means 48 and the first end 18 of the transmission means is spaced from the first pulley 13 of a height H4 greater than the height H3. The elongation corresponds to a value ΔH which is the difference between the height H4 and the height H3. The compression tensile sensor converts this elongation value ΔH into a measurement of the weight of the load brought to the platform. In this way, the sensor makes it possible to measure the weight of the load both during the loading and during the unloading thereof on the mobile platform 6.

En fonctionnement, par exemple lors du déchargement du bateau, le moteur met en rotation dans le sens des aiguilles d'une montre, par l'intermédiaire du bras rotatif, la première poulie qui exerce une traction vers le bas sur le moyen de transmission et une tension orientée vers la seconde poulie est générée à partir de la deuxième extrémité du moyen de transmission reliée à la face basale de la plateforme qui est à vide. Cette tension amorce la descente de la plateforme mobile à vide le long de chaque pylône dans une direction allant de la position haute 12 vers la position basse 11 (figure 2a).In operation, for example during the unloading of the boat, the engine rotates in a clockwise direction, via the rotating arm, the first pulley which pulls down on the transmission means and a tension directed towards the second pulley is generated from the second end of the transmission means connected to the basal face of the platform which is empty. This tension initiates the descent of the empty mobile platform along each pylon in a direction from the high position 12 to the low position 11 ( figure 2a ).

La plateforme est ensuite ralentie par le système de régulation, commandé par le premier moyen de contrôle, alors qu'elle s'approche du troisième niveau variable 33 (figure 2b) de déchargement du bateau pour y être chargée.The platform is then slowed down by the control system, controlled by the first control means, as it approaches the third variable level 33 ( figure 2b ) unloading the boat to be loaded.

Typiquement, lors du déchargement du bateau, la première position est choisie à une distance prédéterminée comprise de préférence entre 0,25 et 0,50 mètres au-dessus du troisième niveau variable de sorte que lorsque le bateau est déchargé, le ponton du bateau n'entre pas en contact avec la face apicale de la plateforme lors de la remontée du niveau du ponton après déchargement de la marchandise depuis le bateu vers la plateforme.Typically, when unloading the boat, the first position is chosen at a predetermined distance preferably between 0.25 and 0.50 meters above the third variable level so that when the boat is unloaded, the pontoon of the boat does not come into contact with the apical face of the platform when raising the level of the pontoon after unloading the goods from the bateu to the platform.

La plateforme une fois chargée est ensuite remontée. Lors de la montée, le moteur met en rotation dans le sens inverse des aiguilles d'une montre, par l'intermédiaire du bras rotatif, la première poulie qui exerce alors une traction vers le haut sur le moyen de transmission et une tension orientée vers la première poulie est générée à partir de la première extrémité du moyen de transmission reliée à la face apicale de la plateforme. Cette tension amorce la montée de la plateforme chargée le long de chaque pylône dans une direction allant de la position basse 11 vers la position haute 12.The platform once loaded is then reassembled. During the climb, the motor rotates counterclockwise, via the rotating arm, the first pulley which then exerts an upward pull on the transmission means and a tension directed towards the first pulley is generated from the first end of the transmission means connected to the apical face of the platform. This voltage initiates the rise of the loaded platform along each pylon in a direction from the low position 11 to the high position 12.

Lors de cette montée, la plateforme mobile est par exemple arrêtée à une position intermédiaire du troisième niveau variable 33 (figure 2c) correspondant au niveau d'un plateau de chargement du quai à partir de laquelle la plateforme mobile est déchargée.During this climb, the mobile platform is for example stopped at an intermediate position of the third variable level 33 ( Figure 2c ) corresponding to the level of a platform loading platform from which the mobile platform is unloaded.

De manière similaire, lors du chargement du bateau le moteur met en rotation dans le sens des aiguilles d'une montre, par l'intermédiaire du bras rotatif, la première poulie qui exerce une traction vers le bas sur le moyen de transmission et une tension orientée vers la seconde poulie est générée à partir de la deuxième extrémité du moyen de transmission reliée à la face basale de la plateforme chargée de la marchandise. Cette tension amorce la descente de la plateforme mobile à vide le long de chaque pylône dans une direction allant de la position haute 12 vers la position basse 11 (figure 2a).Similarly, when loading the boat, the engine rotates in a clockwise direction, via the rotating arm, the first pulley which pulls down on the transmission means and a tension oriented towards the second pulley is generated from the second end of the transmission means connected to the base face of the platform loaded with the goods. This voltage initiates the descent of the mobile platform to empty along each pylon in a direction from the high position 12 to the low position 11 ( figure 2a ).

La plateforme est ensuite ralentie par le système de régulation, commandé par le premier moyen de contrôle, alors qu'elle s'approche du troisième niveau variable 33 (figure 2b) de chargement du bateau pour y être déchargée.The platform is then slowed down by the control system, controlled by the first control means, as it approaches the third variable level 33 ( figure 2b ) loading the boat to be unloaded.

La plateforme une fois déchargée est ensuite remontée. Lors de la montée, le moteur met en rotation dans le sens inverse des aiguilles d'une montre, par l'intermédiaire du bras rotatif, la première poulie qui exerce alors une traction vers le haut sur le moyen de transmission et une tension orientée vers la première poulie est générée à partir de la première extrémité du moyen de transmission reliée à la face apicale de la plateforme. Cette tension amorce la montée de la plateforme déchargée le long de chaque pylône dans une direction allant de la position basse 11 vers la position haute 12.The platform once unloaded is then reassembled. During the climb, the motor rotates counterclockwise, via the rotating arm, the first pulley which then exerts an upward pull on the transmission means and a tension directed towards the first pulley is generated from the first end of the transmission means connected to the apical face of the platform. This voltage initiates the rise of the platform discharged along each tower in a direction going from the low position 11 to the high position 12.

Lors de cette montée, la plateforme mobile est par exemple arrêtée à une position intermédiaire du troisième niveau variable 33 (figure 2c) correspondant au niveau d'un plateau de déchargement du quai à partir de laquelle la plateforme mobile est chargée.During this climb, the mobile platform is for example stopped at an intermediate position of the third variable level 33 ( Figure 2c ) corresponding to the level of an unloading platform of the platform from which the mobile platform is loaded.

Il est bien entendu que la présente invention n'est en aucune façon limitée aux formes de réalisations décrites ci-dessus et que bien des modifications peuvent y être apportées sans sortir du cadre des revendications annexées.It is understood that the present invention is in no way limited to the embodiments described above and that many modifications can be made without departing from the scope of the appended claims.

Claims (13)

Dispositif élévateur comprenant au moins un pylône (2,3), présentant une extrémité de tête (4) et une extrémité de pied (5), un moyen de transmission (17) une plateforme mobile (6) présentant une face apicale (7) et une face basale (8) opposées l'une à l'autre, ladite plateforme étant montée sur ledit pylône et agencée pour se déplacer entre ladite extrémité de pied et ladite extrémité de tête dudit au moins un pylône, ledit pylône supportant à un premier niveau une première poulie (13) agencée pour être mise en rotation et pour entraîner ledit premier moyen de transmission (17) engagé avec la première poulie et présentant une première extrémité (18) reliée à ladite face apicale de ladite plateforme, ledit premier moyen de transmission étant agencé pour déplacer ladite plateforme entre ladite extrémité de tête et ladite extrémité de pied par rotation de ladite première poulie, caractérisé en ce qu'il comprend un premier moyen de contrôle (30) relié à un régulateur (31) de ladite vitesse de rotation de ladite première poulie et à un premier capteur mobile (32) monté sur un des pylônes et libre de se déplacer le long du pylône entre ladite extrémité de tête (4) et ladite extrémité de pied (5) dudit pylône, ledit premier capteur étant agencé pour, d'une part, déterminer une première position dans l'espace tridimensionnel et, d'autre part, coder ladite première position en un premier signal destiné à être envoyé vers ledit moyen de contrôle, ledit premier moyen de contrôle (30) étant agencé pour traiter en entrée ledit premier signal, calculer une deuxième position de référence (35) distante à une deuxième hauteur seuil (H2) prédéterminée de ladite première position (33), et ensuite coder ladite deuxième position de référence en un deuxième signal envoyé vers le régulateur (31) agencé pour recevoir ce deuxième signal et pour ensuite le traduire en une variation de ladite vitesse de rotation dudit moteur lorsque la plateforme mobile passe par ladite position de référence (35) pour s'approcher de ladite première position.Elevating device comprising at least one pylon (2,3), having a head end (4) and a foot end (5), a transmission means (17) a movable platform (6) having an apical face (7) and a basal face (8) opposite one another, said platform being mounted on said pylon and arranged to move between said foot end and said head end of said at least one pylon, said pylon supporting a first a first pulley (13) arranged to be rotated and to drive said first transmission means (17) engaged with the first pulley and having a first end (18) connected to said apical face of said platform, said first means of transmission being arranged to move said platform between said head end and said foot end by rotation of said first pulley, characterized in that it comprises a first control means e (30) connected to a regulator (31) of said rotational speed of said first pulley and to a first movable sensor (32) mounted on one of the towers and free to move along the pylon between said leading end (4). ) and said foot end (5) of said pylon, said first sensor being arranged to, firstly, determine a first position in the three-dimensional space and, secondly, encode said first position in a first signal intended to being sent to said control means, said first control means (30) being arranged to input said first signal, calculating a second reference position (35) distant at a second predetermined threshold height (H2) of said first position ( 33), and then coding said second reference position into a second signal sent to the regulator (31) arranged to receive this second signal and then translate it into a variation of said fast sse rotation of said motor when the mobile platform passes through said reference position (35) to approach said first position. Dispositif selon la revendication 1, caractérisé en ce que ledit pylône supporte, à un deuxième niveau situé en-dessous dudit premier niveau, une deuxième poulie (16), en rotation libre, pour former une première paire de poulies reliées entre elles par ledit premier moyen de transmission, ledit moyen de transmission présentant une deuxième extrémité (21) reliée à ladite face basale de ladite plateforme, ledit premier moyen de transmission étant agencé pour déplacer ladite plateforme et entraîner ladite deuxième poulie lorsque ladite première poulie est mise en rotation.Device according to claim 1, characterized in that said pylon supports, at a second level located below said first level, a second pulley (16), in free rotation, to form a first pair of pulleys interconnected by said first transmission means, said transmission means having a second end (21) connected to said base face of said platform, said first transmission means being arranged to move said platform and drive said second pulley when said first pulley is rotated. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il comprend un deuxième pylône (3) pour former avec ledit premier pylône une paire de pylônes, ledit deuxième pylône supportant une première poulie (13) à un premier niveau et une deuxième poulie (16) à un deuxième niveau situé en-dessous dudit premier niveau, lesdites poulies étant reliées entre elles par un deuxième moyen de transmission (17), ledit moyen de transmission comprenant une première extrémité reliée à ladite face apicale de ladite plateforme et une deuxième extrémité reliée à ladite face basale de ladite plateforme, ledit deuxième moyen de transmission étant agencés pour déplacer ladite plateforme entre ladite position haute et entraîner ladite deuxième poulie lorsque ladite première poulie est mise en rotation.Device according to claim 1 or 2, characterized in that it comprises a second pylon (3) to form with said first pylon a pair of pylons, said second pylon supporting a first pulley (13) at a first level and a second pulley (16) at a second level located below said first level, said pulleys being interconnected by a second transmission means (17), said transmission means comprising a first end connected to said apical face of said platform and a second end connected to said base face of said platform, said second transmission means being arranged to move said platform between said high position and drive said second pulley when said first pulley is rotated. Dispositif selon la revendication 2, dans lequel, pour chaque pylône, ladite première poulie est placée au niveau de l'extrémité de tête (4) dudit pylône.Device according to claim 2, wherein, for each pylon, said first pulley is placed at the head end (4) of said pylon. Dispositif selon l'une quelconque des revendications 3 à 4, dans lequel le premier (2) et le deuxième pylônes (3) de ladite paire de pylônes sont reliés entre eux au niveau de leur extrémité de tête (4) par un essieu rotatif autour duquel lesdites premières poulies (13) de chacun des pylônes sont mises en rotation de manière synchronisée.Device according to any one of claims 3 to 4, wherein the first (2) and the second pylons (3) of said pair of pylons are interconnected at their head end (4) by a rotating axle around which said first pulleys (13) of each of the towers are rotated synchronously. Dispositif selon l'une quelconque des revendications 1 à 5, dans lequel ledit au moins un pylône (2) est muni d'un rail de guidage (26) et dans lequel ladite plateforme comprend au moins un premier roulement (27) agencé pour être placé dans ledit rail.Device according to any one of claims 1 to 5, wherein said at least one pylon (2) is provided with a guide rail (26) and wherein said platform comprises at least a first bearing (27) arranged to be placed in said rail. Dispositif selon l'une quelconque des revendications 3 à 6, caractérisé en ce que ledit deuxième pylône (3) est muni d'un rail de guidage (26) et dans lequel ladite plateforme comprend au moins un deuxième roulement (27) agencé pour être placé dans ledit deuxième rail.Device according to any one of claims 3 to 6, characterized in that said second pylon (3) is provided with a guide rail (26) and wherein said platform comprises at least one second bearing (27) arranged to be placed in said second rail. Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce qu'il est destiné à être placé en bout de quai (9) de voies navigables ou ferrées.Device according to any one of the preceding claims, characterized in that it is intended to be placed at the end of the platform (9) of waterways or railways. Dispositif selon la revendication 7, caractérisé en ce qu'il est agencé pour être placé à bout de quai (9) de voie navigable présentant un niveau d'eau (10), et en ce qu'il est agencé de façon à ce qu'un premier plan tangent à ladite face apicale (7) de ladite plateforme mobile (6) soit substantiellement parallèle à un deuxième plan passant par un premier niveau (11) correspondant à une position basse de la plateforme et à un troisième plan tangent passant par un deuxième niveau (12) correspondant à une position haute de la plateforme et agencé pour être distant du niveau d'eau (10) d'une première hauteur (H1) supérieure ou égale à 7 mètres, de préférence entre 7 et 10 mètres.Device according to Claim 7, characterized in that it is arranged to be placed at the end of a waterway quay (9) having a water level (10), and in that it is arranged in such a way that a first plane tangential to said apical face (7) of said mobile platform (6) is substantially parallel to a second plane passing through a first level (11) corresponding to a lower position of the platform and to a third tangent plane passing through a second level (12) corresponding to a high position of the platform and arranged to be remote from the water level (10) of a first height (H1) greater than or equal to 7 meters, preferably between 7 and 10 meters. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un premier système de sécurité comprenant au moins un premier ressort (36) agencé pour relier ladite face apicale (7) de la plateforme mobile (6) à ladite première extrémité (18) du moyen de transmission (17), ledit premier ressort étant associé à un deuxième capteur (37) d'élongation du ressort, ledit système de sécurité comprenant un deuxième moyen de contrôle (38) relié audit capteur d'élongation (37) et à un module d'arrêt d'urgence (39) agencé pour stopper ladite rotation de ladite première poulie, ledit deuxième moyen de contrôle étant agencé pour traiter un troisième signal envoyé par ledit capteur d'élongation et correspondant à une valeur d'élongation mesurée par ledit capteur d'élongation, pour comparer ce troisième signal à un deuxième signal de référence correspondant à une valeur d'élongation seuil et pour envoyer un quatrième signal vers ledit module d'arrêt d'urgence agencé pour traduire ledit quatrième signal en un arrêt de la rotation de ladite première poulie.Device according to any one of the preceding claims, characterized in that it comprises a first security system comprising at least a first spring (36) arranged to connect said apical face (7) of the mobile platform (6) to said first end (18) of the transmission means (17), said first spring being associated with a second spring elongation sensor (37), said security system comprising a second control means (38) connected to said elongation sensor ( 37) and an emergency stop module (39) arranged to stop said rotation of said first pulley, said second control means being arranged to process a third signal sent by said elongation sensor and corresponding to an elongation value measured by said elongation sensor, for comparing this third signal with a second reference signal corresponding to a threshold elongation value and for sending a fourth signal to said emergency stop module arranged to translate said fourth signal into a stop of rotation of said first pulley. Dispositif selon la revendication 10, caractérisé en ce ledit premier système de sécurité comprend au moins un deuxième ressort (40) agencé pour relier ladite face basale (8) de ladite plateforme mobile à ladite deuxième extrémité (21) dudit moyen de transmission, ledit deuxième ressort étant associé à un troisième capteur (41) d'élongation du ressort relié audit deuxième moyen de contrôle.Device according to claim 10, characterized in that said first security system comprises at least one second spring (40) arranged to connect said basal face (8) of said mobile platform to said second end (21) of said transmission means, said second spring being associated with a third spring elongation sensor (41) connected to said second control means. Dispositif selon la revendication 10 ou 11, caractérisé en ce qu'il comprend un deuxième système de sécurité dans lequel ladite face basale de la plateforme mobile est munie d'au moins un quatrième capteur de contact (42) qui est un boudin malléable relié audit deuxième moyen de contrôle.Device according to claim 10 or 11, characterized in that it comprises a second security system in which said base face of the mobile platform is provided with at least a fourth contact sensor (42) which is a malleable rod connected to said second means of control. Dispositif selon l'une quelconque des revendications 3 à 11, caractérisé en ce qu'au moins un pylône, de préférence chaque pylône, comprend une série d'encoches (43) alignées le long d'une arête d'une bande de roulement du rail, lesdites encoches étant incluses dans un quatrième plan perpendiculaire au premier plan tangent de la face apicale de ladite plateforme mobile, ladite plateforme présentant deux faces latérales (44, 45) opposées l'une à l'autre et agencées pour relier ladite face apicale (7) à ladite face basale (8) de la plateforme mobile (6), chacune des faces latérales présentant un cinquième plan tangent parallèle au quatrième plan dans lequel sont alignées les encoches (43), chacune des faces latérales étant munie d'au moins un stoppe-chute (46) agencé pour s'emboiter dans lesdites encoches, ledit stoppe-chute étant relié à un vérin pneumatique (47) ou magnétique agencé pour engager ledit stoppe-chute dans une des encoches, le vérin étant relié audit deuxième moyen de contrôle agencé pour commander le vérin lorsque ladite rotation de la poulie est stoppée.Device according to any one of claims 3 to 11, characterized in that at least one pylon, preferably each pylon, comprises a series of notches (43) aligned along an edge of a tread of the tread. rail, said notches being included in a fourth plane perpendicular to the first tangent plane of the apical face of said mobile platform, said platform having two lateral faces (44, 45) opposite to each other and arranged to connect said apical face (7) to said basal face (8) of the mobile platform (6), each of the lateral faces having a fifth tangent plane parallel to the fourth plane in which are aligned the notches (43), each of the lateral faces being provided with least a stopp-drop (46) arranged to fit into said notches, said stopper-chute being connected to a pneumatic cylinder (47) or magnetic arranged to engage said stopp-drop in one of the notches, the jack being connected to said second control means arranged to control the jack when said rotation of the pulley is stopped.
EP14183611.4A 2013-09-06 2014-09-04 Lifting device Not-in-force EP2845835B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RS20160384A RS54930B1 (en) 2013-09-06 2014-09-04 Lifting device
HRP20160570TT HRP20160570T1 (en) 2013-09-06 2016-05-27 Lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2013/0585A BE1022016B1 (en) 2013-09-06 2013-09-06 LIFTING DEVICE

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EP2845835A1 true EP2845835A1 (en) 2015-03-11
EP2845835B1 EP2845835B1 (en) 2016-03-02

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BE (1) BE1022016B1 (en)
HR (1) HRP20160570T1 (en)
HU (1) HUE028885T2 (en)
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RS (1) RS54930B1 (en)

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CN108975199A (en) * 2018-08-22 2018-12-11 东莞理工学院 The automatic rising-sinking platform and elevator of a kind of quick operation and high accuracy positioning

Also Published As

Publication number Publication date
HRP20160570T1 (en) 2016-09-23
RS54930B1 (en) 2016-10-31
HUE028885T2 (en) 2017-01-30
EP2845835B1 (en) 2016-03-02
PL2845835T3 (en) 2016-11-30
BE1022016B1 (en) 2016-02-04

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