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EP4444651B1 - Hublift für in der höhe arbeitende personen - Google Patents

Hublift für in der höhe arbeitende personen

Info

Publication number
EP4444651B1
EP4444651B1 EP22835092.2A EP22835092A EP4444651B1 EP 4444651 B1 EP4444651 B1 EP 4444651B1 EP 22835092 A EP22835092 A EP 22835092A EP 4444651 B1 EP4444651 B1 EP 4444651B1
Authority
EP
European Patent Office
Prior art keywords
arm
damping device
working platform
aerial lift
piston
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.)
Active
Application number
EP22835092.2A
Other languages
English (en)
French (fr)
Other versions
EP4444651A1 (de
EP4444651C0 (de
Inventor
Arnaud Sochas
Guillaume Gabillard
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.)
Manitou BF SA
Original Assignee
Manitou BF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manitou BF SA filed Critical Manitou BF SA
Publication of EP4444651A1 publication Critical patent/EP4444651A1/de
Application granted granted Critical
Publication of EP4444651B1 publication Critical patent/EP4444651B1/de
Publication of EP4444651C0 publication Critical patent/EP4444651C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • 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
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • 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
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/24—Electrical devices or systems

Definitions

  • the present invention relates to a lifting platform for working in the elevating of people.
  • Lifting cradles are well known to those skilled in the art, as illustrated, for example, by the request for patent WO2019/158869 or the patent US11007838 , which discloses the preamble of claim 1. Manufacturers of such cradles are constantly seeking to improve the comfort of the operator located in the basket without harming the safety of said operator or the quality of the work carried out.
  • An aim of the invention is therefore to propose a lifting platform whose design allows increased comfort for the operator of the platform without compromising the quality of the work that can be carried out from the platform.
  • Said nacelle therefore has two operating modes depending at least on the angular position of the arm within the angular range defined by the extreme high and low positions of the arm, namely an operating mode in transport configuration automatically activated when the arm is in the extreme low position, and in which the maximum speed of movement of the chassis is greater than the maximum speed of the chassis in operating mode in work configuration and an operating mode in work configuration automatically activated when the arm occupies a position other than the extreme low position and in which the maximum speed of movement of the chassis is lower than the maximum speed of the chassis in operating mode in transport configuration.
  • This design makes it possible to avoid high-speed ground movement of the chassis in the operating mode in work configuration in which the arm occupies a position other than the extreme low position. In work configuration, the arm is potentially in the raised position.
  • the damping device can be activated or deactivated depending on the activated operating mode.
  • the damping device is activated, i.e. in the active state, in the operating mode. operation in transport configuration and deactivatable when switching from the transport configuration operating mode to the work configuration operating mode.
  • the damping device can thus be in the inactive state in the work configuration operating mode. Thanks to the fact that the damping device is activated in the transport configuration operating mode, it is possible for the operator seated in the basket to have driving comfort during the rolling phases which take place essentially in the transport configuration operating mode.
  • This damping device makes it possible to directly or indirectly dampen the oscillating movements of the basket when raising and lowering observed in particular when the chassis is traveling at a high speed on uneven ground.
  • the deactivation of the damping device when switching from the transport configuration operating mode to the work configuration operating mode allows the operator, in the work configuration operating mode, not to be disturbed by a possibility of movement of the basket floor which could impair the precision of the operator's movements.
  • the damping device is in the active state in the operating mode in the transport configuration of the nacelle and the control unit is configured to control the deactivation of the damping device in the activated state of the operating mode in the work configuration of the nacelle.
  • the damping device is in the active state in the operating mode in the transport configuration of the nacelle and the control unit is configured to control the deactivation of the damping device, when the arm is angularly moved away from the extreme low position.
  • the control unit is therefore configured to control the transition from the active state to the inactive state of the damping device, depending on the angular position occupied by the arm between the extreme low and high positions.
  • transition of the nacelle from the operating mode in transport configuration to the operating mode in work configuration is accompanied by a deactivation of the damping device and the transition of the nacelle from the operating mode in work configuration to the operating mode in transport configuration is accompanied by an activation of the damping device.
  • the or at least one of the damping devices comprises at least one hydraulic cylinder, the or at least one of the cylinders comprising a body and a piston, the body and the piston being movable relative to each other, said piston separating said body into two chambers.
  • the two chambers are connected to each other by a fluid circuit equipped with a closure member mounted to move between an open position corresponding to the active state of the damping device and a closed position, corresponding to the inactive state of the damping device, in which any transfer of fluid between said chambers is prevented, each chamber housing at least one elastically deformable member for returning the piston towards the other chamber.
  • the body and the piston of the jack can be arranged on the movement transmission chain between the upper end of the arm and the location for receiving an operator of the basket and can be interposed between two separate parts of the nacelle mounted to move relative to each other, the movement of fluid between said chambers of the jack making it possible to dampen this relative movement of said parts between them.
  • the basket comprises a bottom and side walls surrounding said bottom, the floor extends above said bottom and the or at least one of the damping devices which is an activatable/deactivatable device arranged between the receiving location of an operator of the basket and the upper end of the arm extends between the floor and the bottom of the basket, the floor and the bottom being mounted to move in the direction of moving towards or away from each other in the active state of the damping device.
  • This arrangement makes it possible to dampen the oscillating movements of the floor as close as possible to the floor, particularly when the chassis is moving over uneven ground at high speed, so that the comfort of the operator in the basket is increased.
  • the body of the cylinder of the damping device is coupled to the bottom of the basket and the piston of said cylinder is coupled to the floor or vice versa and the piston and the body are mounted to move relative to each other in the driven state in relative displacement of the floor and the bottom in the direction of moving towards or away from each other in the active state. of the damping device.
  • the inactive state of the damping device any relative movement of the floor and the bottom in the direction of moving towards or away from each other is prevented.
  • the floor and the bottom are mounted fixed in the inactive state of the damping device.
  • the or at least one of the damping devices which is an activatable/deactivatable device arranged between the receiving location of an operator of the basket and the upper end of the arm extends between two basket parts, and said basket parts are mounted to move relative to each other in the active state of the damping device.
  • one of the basket parts is coupled to the upper end of the arm by the articulated connection coupling the upper end of the arm to the basket, this articulated connection comprising at least one pivoting connection with a so-called vertical axis, said axis extending orthogonally to the floor and the body of the cylinder of the damping device is coupled to one of the basket parts and the piston of said cylinder is coupled to the other of the basket parts and the piston and the body are, in the active state of the damping device, mounted to move relative to each other in the driven state in relative displacement of said basket parts.
  • the nacelle being of the type in which the upper end of the arm for driving the basket in movement is coupled to the basket by an articulated connection comprising at least one structure with a parallelogram deformable to the basket, the structure with a deformable parallelogram is connected to the upper end of the arm by a pivot connection with a so-called horizontal pivot axis perpendicular to the longitudinal axis of the arm, and the or at least one of the damping devices which is an activatable/deactivatable device arranged between the location for receiving an operator of the basket and the upper end of the arm extends between the upper end of the arm and the structure with a deformable parallelogram.
  • the or at least one of the damping devices comprising at least one hydraulic cylinder with a body and a piston separating said body into two chambers, the body of the cylinder is coupled to the arm and the piston of said cylinder is coupled to the deformable parallelogram structure or vice versa, the deformable parallelogram structure is mounted movably around the pivot axis of the pivot connection coupling the arm and the deformable parallelogram structure in the driven state in axial displacement of the piston inside the body and the damping device comprises a hydraulic accumulator in fluid communication with one of the chambers of the cylinder by a closable connection open in the active state of the damping device.
  • This design is characterized by its simplicity.
  • This design allows the use of the existing cylinder used as a cylinder for correcting the horizontality of the basket floor as a damping device by associating it with a hydraulic accumulator, this damping device being activated when the closable fluid connection between the accumulator and the cylinder is open. This results in a simplified design of the nacelle.
  • the device for determining a parameter representative of the angular position of the arm comprises at least one inductive sensor for detecting the lowest extreme position of the arm.
  • This inductive sensor can enable the detection of the arm in abutment on the chassis in the lowest extreme position.
  • the elevation of the arm and the resulting absence of contact of the arm with the stop can be detected by the inductive sensor.
  • This detection information can be transmitted to the control unit.
  • the device can comprise an angular sensor for measuring the angular position of the arm relative to one of the extreme positions. These necessary conditions can be supplemented by other conditions, in particular when the arm is a telescopic arm.
  • the lowest extreme position is also defined in this case by a retracted position of the arm.
  • said nacelle comprises a forced activation member of the damping device, this forced activation member being a manually operated activation member for controlling forcedly switching from the inactive state to the active state of the damping device to the stressed state of said activation member.
  • the basket when said deformable parallelogram structure is present, the basket is coupled to the deformable parallelogram structure by a pivoting connection with a so-called vertical axis, said axis extending orthogonally to the floor.
  • the basket when the upper end of the arm is coupled to the basket by an articulated connection comprising at least one deformable parallelogram structure, the basket is coupled to the deformable parallelogram structure by a pivoting connection with a so-called vertical axis, said axis extending orthogonally to the floor.
  • the platform 1 is a platform for working in personnel elevation.
  • This platform 1 includes a self-propelled rolling chassis 6.
  • This rolling chassis 6 is, for example, equipped with a thermal engine connected to the wheels of the machine by a transmission to drive the wheels of the machine in rotation.
  • the wheels could have been replaced by tracks in an equivalent manner.
  • This nacelle 1 also comprises a basket 2 which can be coupled to the self-propelled chassis 6.
  • This basket 2 comprises a control station 3 formed here by a control console equipped in particular with an articulated control lever called a joystick.
  • This control lever makes it possible, in a manner known per se, to control the elevation of the basket 2 which will be described below and the movement of the self-propelled chassis 6.
  • the control station 3 is therefore equipped with controls for moving the chassis 6 and for raising the basket 2.
  • This basket 2 comprises a floor 4 surmounted at least partially by a location 5 for receiving an operator inside which the operator takes a seat and can stand on the floor 4.
  • This reception location 5 is delimited by railings or guardrails which form the side walls 15 of the basket 2.
  • An access door can be provided in these side walls 15.
  • the basket 2 further comprises a base 14 extending under the floor 4 or merging with the floor 4 depending on the design of the basket 2.
  • the nacelle 1 also comprises, for coupling the basket 2 to the self-propelled chassis 6, an arm 91 for driving the basket 2 to move.
  • This arm 91 which can be a simple arm, a telescopic arm, or an articulated arm as in the example shown in Figure 1A , is a pivoting arm.
  • This arm 91 is coupled at one of its ends, called lower, to the chassis 6 by a pivot axis pivot connection, called horizontal, that is to say extending substantially horizontally to within ⁇ 15 degrees, in the positioned state of the self-propelled chassis 6 on a horizontal flat surface.
  • One or more jacks, called lifting jacks, of the arm 91 which, depending on the design of the arm, extend between the chassis 6 and the arm 91 and possibly between sections of the arm, when the arm is, as shown, an articulated arm, are provided.
  • the or at least one of the lifting cylinders is controllable from the control station 3 of the basket 2. This or these lifting cylinders allow, in a manner known per se, a movement of the arm 91 between an extreme low position close to the ground and an extreme high position away from the ground.
  • the opposite end, called the upper end, of the arm 91 is coupled to the basket 2, either directly, that is to say by a rigid connection in the simplest version, or by an articulated connection 21.
  • This articulated connection 21 can have a large number of forms.
  • this articulated connection 21 comprises a structure 92 with a deformable parallelogram called a pendulum structure.
  • This structure 92 with a deformable parallelogram is well known to those skilled in the art. It will not be described in more detail below.
  • this structure 92 with a deformable parallelogram is coupled to the upper end of the arm 91 by a pivot link 13 with a pivot axis, called horizontal, perpendicular to the longitudinal axis of the arm.
  • the pivot axis, called horizontal extends substantially parallel to the ground support plane of the chassis 6 in the positioned state of the chassis 6 on a horizontal flat surface.
  • the basket 2 is coupled to the structure 92 with a deformable parallelogram by a pivot link 18 with a so-called vertical axis, said axis extending orthogonally to the floor 4.
  • the structure 92 with deformable parallelogram is removed and the connection 18 with pivoting of so-called vertical axis is maintained.
  • a cylinder-type actuator i.e. formed by a cylinder, is arranged between the upper end of the arm 91 and said deformable parallelogram structure 92.
  • This actuator called a slave, represented at 20 in the figures, is generally in fluid communication with an actuator, called a master, also formed by a cylinder.
  • This master actuator is arranged between the arm 91 and the frame 6.
  • fluid communication it is meant that one of the chambers of the cylinder constituting the master actuator is connected by a first fluid circuit to one of the chambers of the cylinder constituting the slave actuator 20 and that the other chamber of the cylinder constituting the master actuator is connected by a second circuit to the other chamber of the cylinder of the slave actuator 20.
  • This cylinder constituting The slave actuator can also have its own control as shown in figure 2 .
  • this cylinder can be both a slave cylinder and an autonomous cylinder with its own control or exclusively a slave cylinder or exclusively an autonomous cylinder without departing from the scope of the invention.
  • this cylinder is a slave cylinder
  • the movement of the arm 91 under the action of the lifting cylinder(s) generates in parallel a movement of the master actuator and consequently of the slave actuator in fluid communication with the master actuator.
  • This assembly makes it possible to maintain the horizontality of the floor 4 of the basket 2 at least during a pivoting movement of the arm 91.
  • the nacelle 1 comprises a device 8 for determining a parameter representative of the angular position of the arm 91 relative to the extreme low and high positions of the arm 91.
  • This device 8 for determining a parameter representative of the angular position of the arm 91 can take a large number of forms.
  • This device 8 for determining a parameter representative of the angular position of the arm 91 can comprise at least one angular sensor arranged at the pivoting connection of the arm 91 to the chassis 6. This angular sensor allows the measurement of the angle formed by the arm with a plane passing through the longitudinal axis of the arm in the extreme low position of said arm.
  • the device 8 for determining a parameter representative of the angular position of the arm can be formed by a sensor, for example an inductive sensor, for detecting the extreme low position of the arm, the lifting of the arm from this extreme low position in which the arm is in abutment on the chassis being detected by said sensor.
  • a sensor for example an inductive sensor
  • additional sensors are provided at each section of the articulated arm and/or at the extended or retracted position of the telescope to reliably identify the extreme low position of the arm.
  • the extreme low position corresponds to an extreme low position of the arm or arm sections when the arm is articulated and, in addition, to the retraction of the telescope when the arm is a telescopic arm.
  • the nacelle 1 also comprises a control unit 10.
  • This control unit 10 is configured to acquire data from the device 8 for determining a parameter representative of the angular position of the arm 91.
  • This control unit 10 is in the form of an electronic and computer system which comprises, for example, a microprocessor and a working memory.
  • the control unit is in the form of an electronic and computer system which comprises, for example, a microprocessor and a working memory.
  • the control unit may be in the form of a programmable controller.
  • the functions and steps described may be implemented in the form of a computer program or via hardware components (e.g., programmable gate arrays).
  • control unit or its modules may be performed by computer instruction sets or modules implemented in a processor or controller or may be performed by dedicated electronic components or components of the programmable logic circuit type (or FPGA which is the acronym for field-programmable gate array) or of the application-specific integrated circuit type (or ASIC which is the acronym for application-specific integrated circuit). It is also possible to combine computer parts and electronic parts.
  • the unit or means or modules of said unit are configured to perform a given operation, this means that the unit comprises computer instructions and the corresponding execution means which make it possible to perform said operation and/or that the unit comprises corresponding electronic components.
  • the unit or means or modules of said unit are configured to perform a given operation, this means that the unit comprises computer instructions and the corresponding execution means which make it possible to perform said operation and/or that the unit comprises corresponding electronic components.
  • This control unit 10 may comprise a memory for storing a threshold value corresponding to the value of the angle formed by the arm in its extreme low position. Alternatively or additionally, this control unit 10 may also receive as input a signal from the inductive sensor described above corresponding to the fact that the arm 91 is no longer in stop and has been driven in movement in the direction of lifting, this signal being representative of the passage of the arm from the extreme low position to a position other than the extreme low position when the arm is not articulated.
  • the nacelle 1 also has two operating modes, one called operating mode in work configuration, the other called operating mode in transport configuration. These operating modes can be selectively activated depending on the data provided by the device 8 for determining a parameter representative of the angular position of the arm 91.
  • the control unit 10 is configured to control the activation of the operating mode in transport configuration when the arm 91 is in the extreme low position as defined above.
  • the control unit 10 is configured to control the activation of the operating mode in work configuration when the arm 91 moves from the extreme low position to another position. The activation of one or other of the operating modes therefore takes place automatically.
  • the operating modes in work configuration and in transport configuration are each defined at least by a maximum ground travel speed of the self-propelled chassis 6.
  • the maximum ground travel speed of the chassis 6 of the nacelle 1 is of the order of 0.6 km/h, while in the operating mode in transport configuration, the maximum ground travel speed of the chassis 6 of the nacelle can be at least 5 km/h.
  • the maximum travel speed of the self-propelled chassis 6 in the working configuration operating mode is lower than the maximum travel speed of the self-propelled chassis 6 in the transport configuration operating mode to avoid any risk accident when the arm is in the high position, i.e. in the working configuration operating mode.
  • the maximum travel speed of the self-propelled chassis 6 in the transport configuration operating mode is lower than the maximum travel speed of the self-propelled chassis 6 in the transport configuration operating mode to avoid any risk accident when the arm is in the high position, i.e. in the working configuration operating mode.
  • the nacelle 1 comprises at least one device 11 for damping the oscillation movements of the basket 2 when moving up and down, these oscillation movements being capable of occurring in particular when the rolling chassis 6 moves on the ground over uneven terrain. There is a risk of the operator being expelled from the basket 2 if these movements are of too great an amplitude. In addition, these oscillations place a great deal of strain on the operator, who must dampen these movements with his knees by constantly remaining flexed. This results in muscular fatigue for the operator.
  • This damping device 11 is an activatable/deactivatable device which is arranged between the location 5 for receiving the operator in the basket 2 and the upper end of the arm 91. This damping device 11 can affect a large number of shapes.
  • the damping device 11 comprises at least one hydraulic cylinder 12, as in the example shown in figure 2 , or several hydraulic cylinders in parallel as illustrated in figures 6 And 7 .
  • the or each hydraulic cylinder 12 comprises a body 121 and a piston 122 capable of sliding axially inside the body and separating said body into two chambers 123.
  • the chambers 123 are connected to each other by a fluid circuit 124 equipped with a closure member 125.
  • This closure member 125 is here formed by a solenoid valve.
  • This closure member 125 is mounted to move between an open position corresponding to the active state of the damping device 11 and a closed position corresponding to the inactive or deactivated state of the damping device 11 in which the transfer of fluid between said chambers 123 is prevented.
  • Each chamber contains an elastically deformable member 128, such as a spring, for returning the piston towards the other chamber.
  • the damping device 11 comprises two jacks 12 mounted in parallel and each arranged between the floor 4 and the bottom 14 of the basket 2.
  • the floor 4 and the bottom 14 are mounted to move in the direction of moving towards or away from each other in the activated state of the damping device 11.
  • each cylinder 12 of the damping device 11 is coupled to the bottom 14 of the basket 2 and the piston 122 of the cylinder 12 is coupled to the floor 4.
  • the piston 122 of each cylinder 12 is axially movable inside the body 121 in the driven state in relative displacement of the floor 4 and the bottom 14 in the direction of a move towards or away from each other in the active state of the damping device 11. This axial displacement of the piston 122 is damped by the passage of fluid from one chamber to another of the cylinder. In the deactivated or inactive state of the damping device 11, corresponding to the closed state of the closure member 125, any passage of fluid from one chamber to another is prevented and the floor 4 is then fixed relative to the bottom 14 of the basket 2.
  • the damping device 11 extends between two parts 161 and 162 of the basket, said parts of the basket being mounted to move relative to each other in the active state of the damping device 11.
  • the body of the cylinder of the damping device 11 is coupled to one of the parts and the piston of the cylinder to the other part.
  • one of the parts namely here the basket part 162 is coupled to the upper end of the arm 91 by the articulated connection 21, said articulated connection 21 comprising at least one pivoting connection 18 of so-called vertical axis, said axis extending orthogonally to the floor 4 of the basket 2 and the body 121 of the jack 12 of the damping device 11 is coupled to said part 162 of basket 2.
  • the piston 122 of said jack 12 is coupled to the other of the basket parts, namely the basket part 161 which extends between the basket part 162 described previously and the basket 2.
  • the piston 122 and the body 121 of the jack 12 are, in the active state of the damping device 11, mounted to move relative to each other in the driven state in relative displacement of said parts 161,162 basket.
  • This relative displacement of the basket parts 161 and 162 corresponds to a relative displacement of the basket parts 161 and 162 in a direction parallel to the axis of the pivot connection 18 of one of the basket parts to the arm 91.
  • control unit 10 is configured to control the passage of the closure member 125 from the open position to the closed position or vice versa depending on the active or inactive state of the desired damping device 11.
  • the control unit 10 is configured to control the activation or deactivation of the damping device 11 at least as a function of the data provided by the device 8 for determining a parameter representative of the angular position of the arm.
  • the damping device 11 is in the active state in the operating mode in the transport configuration of the nacelle and the control unit is configured to control the deactivation of the damping device 11, that is to say the transition of the damping device 11 from the active state to the inactive state when the arm 91 is moved away from the extreme low position due to an elevation by pivoting movement towards the extreme high position and/or an extension of the telescope in the case of a telescopic arm.
  • the transition of the nacelle from the operating mode in transport configuration to the operating mode in work configuration is accompanied by a deactivation of the damping device 11 and the transition of the nacelle from the operating mode in work configuration to the operating mode in transport configuration is accompanied by an activation of the damping device 11.
  • the damping device 11 can be positioned in various locations on the nacelle 1.
  • the damping device 11 extends between the upper end of the arm 91 and the deformable parallelogram structure 92 of the articulated connection 21 of the upper end of the arm 91 to the basket.
  • the nacelle 1 is of the type in which the upper end of the arm 91 for driving the basket 2 in movement is coupled to the basket by an articulated connection 21 comprising a deformable parallelogram structure 92.
  • the deformable parallelogram structure 92 is connected to the upper end of the arm 91 by a pivot connection 13 with a so-called horizontal pivot axis perpendicular to the longitudinal axis of the arm 91, and the or at least one of the damping devices 11 which is an activatable/deactivatable device arranged between the location 5 for receiving an operator of the basket 2 and the upper end of the arm 91 extends between the upper end of the arm 91 and the structure 92 with a deformable parallelogram.
  • the damping device 11 comprises a hydraulic cylinder 12 with a body 121 and a piston 122 separating said body 121 into two chambers 123.
  • the body 121 of the cylinder 12 is coupled to the arm 91 and the piston 122 of the cylinder 12 is coupled to the deformable parallelogram structure 92.
  • the reverse is also possible.
  • the deformable parallelogram structure 92 is mounted to move around the pivot axis of the pivot connection 13 coupling the arm 91 and the deformable parallelogram structure 92 in the driven state in axial displacement of the piston 122 inside the body 121 and the damping device 11 comprises a hydraulic accumulator 127 produced here in the form of a membrane accumulator in fluid communication with one of the chambers 123 of the cylinder 12 by a closable connection open in the active state of the damping device 11.
  • the shut-off member of the fluid connection is again a solenoid valve controlled in displacement by the control unit for the transition of the fluid connection from the open state to the closed state.
  • the chamber 123 arranged on the bottom side of the cylinder can allow, by its fluid connection with the hydraulic accumulator, in the open state of the connection, an evacuation of the contents of said chamber towards the hydraulic accumulator, this energy then being restitutable.
  • the basket 2 is coupled to the deformable parallelogram structure 92 by a pivoting connection 18 with a so-called vertical axis, said axis extending orthogonally to the floor 4.
  • the cylinder 12 has a body 121 and a piston 122 common with the slave actuator described above.
  • the piston 122 of the cylinder 12 can move axially inside the body 121 under the effect of a movement of the master actuator itself driven in movement under the action of the lifting cylinder. This results in simplicity of construction.
  • the nacelle may comprise a member 17 for forced activation of the damping device 11.
  • This activation member 17 is a manually actuated activation member for forcibly controlling the transition from the inactive state to the active state of the damping device 11 to the stressed state of said activation member 17.
  • This activation member 17 may be arranged at the level of the cockpit 3 and be formed by a button.
  • the operation is always similar.
  • the operating mode in transport configuration is activated and the damping device 11 is in the active state, i.e. the closure member 125 or 126 is in the open position.
  • the control unit receives as input the data from the device 8 for determining a parameter representative of the angular position of the arm and processes them.
  • the operating mode in work configuration is activated and the damping device 11 is deactivated, i.e. made inactive, by closing the closure member 125 or 126.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (13)

  1. Hubarbeitsbühne (1) für die Arbeit einer Person in der Höhe, wobei die Arbeitsbühne (1) Folgendes umfasst:
    - einen Korb (2) mit einem Bedienstand (3) und einem Plattformboden (4), der zumindest teilweise von einem Ort (5) zur Aufnahme einer Bedienperson überragt wird,
    - ein selbstfahrendes Fahrgestell (6),
    - einen Arm (91) für den Verlagerungsantrieb des Korbs (2), von dem eines der Enden, das so genannte untere Ende, mit dem Fahrgestell (6) für eine Winkelverlagerung des Arms zwischen einer unteren Endposition, die dem Boden angenähert ist, und einer oberen Endposition, die vom Boden entfernt ist, schwenkbar verbunden ist, und von dem das entgegengesetzte Ende, das so genannte obere Ende, direkt oder durch eine Gelenkverbindung (21) mit dem Korb (2) gekoppelt ist,
    - eine Vorrichtung (8) zur Bestimmung eines Parameters, der die Winkelposition des Arms (91) darstellt, und
    - eine Bedieneinheit (10), die zum Erfassen von Daten von der Vorrichtung (8) zur Bestimmung eines Parameters, der die Winkelposition des Arms (91) darstellt, konfiguriert ist,
    - wobei die Arbeitsbühne (1) mindestens zwei selektiv aktivierbare Betriebsmodi aufweist, einen Betriebsmodus, der als Transportkonfiguration bezeichnet wird, in dem sich der Arm (91) in der unteren Endposition befindet, und einen Betriebsmodus, der als Arbeitskonfiguration bezeichnet wird, der aktiviert wird, wenn der Arm (91) eine andere Position als die untere Endposition belegt, wobei die Bedieneinheit (10) zum Steuern einer Aktivierung des einen oder des anderen der Betriebsmodi der Arbeitsbühne (1) zumindest in Abhängigkeit von den Daten, die durch die Vorrichtung (8) zur Bestimmung eines Parameters, der die Winkelposition des Arms (91) darstellt, geliefert werden, konfiguriert ist, wobei die Arbeitskonfigurations- und Transportkonfigurationsbetriebsmodi jeweils zumindest durch eine maximale Verlagerungsgeschwindigkeit des selbstfahrenden Fahrgestells (6) definiert sind, indem die maximale Verlagerungsgeschwindigkeit des selbstfahrenden Fahrgestells (6) im Arbeitskonfigurationsbetriebsmodus geringer ist als die maximale Verlagerungsgeschwindigkeit des selbstfahrenden Fahrgestells (6) im Transportkonfigurationsbetriebsmodus, dadurch gekennzeichnet, dass die Arbeitsbühne (1) mindestens eine Vorrichtung (11) zur Dämpfung von Oszillationsbewegungen beim Heben und Senken des Plattformbodens (4) des Korbs (2) umfasst, dass diese Dämpfungsvorrichtung (11) eine aktivierbare/deaktivierbare Vorrichtung ist, die zwischen dem Ort (5) zur Aufnahme einer Bedienperson des Korbs (2) und dem oberen Ende des Arms (91) angeordnet ist, und dass die Bedieneinheit (10) zum Steuern der Aktivierung oder der Deaktivierung der Dämpfungsvorrichtung (11) zumindest in Abhängigkeit von den Daten konfiguriert ist, die durch die Vorrichtung zur Bestimmung eines Parameters, der die Winkelposition des Arms (91) darstellt, geliefert werden.
  2. Hubarbeitsbühne (1) nach Anspruch 1, dadurch gekennzeichnet, dass sich die Dämpfungsvorrichtung (11) im Transportkonfigurationsbetriebsmodus der Arbeitsbühne (1) im aktiven Zustand befindet und die Bedieneinheit (10) zum Steuern der Deaktivierung der Dämpfungsvorrichtung (11) im aktivierten Zustand des Arbeitskonfigurationsbetriebsmodus der Arbeitsbühne (1) konfiguriert ist.
  3. Hubarbeitsbühne (1) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die oder mindestens eine der Dämpfungsvorrichtungen (11) mindestens einen Hydraulikzylinder (12) umfasst, wobei der oder mindestens einer der Zylinder einen Körper (121) und einen Kolben (122) umfasst, wobei der Körper (121) und der Kolben (122) in Bezug aufeinander beweglich sind, wobei der Kolben (122) den Körper (121) in zwei Kammern (123) trennt.
  4. Hubarbeitsbühne (1) nach Anspruch 3, dadurch gekennzeichnet, dass die zwei Kammern (123) durch einen Fluidkreislauf (124) miteinander verbunden sind, der mit einer Verschlusseinrichtung (125) ausgestattet ist, die zwischen einer offenen Position, die dem aktiven Zustand der Dämpfungsvorrichtung (11) entspricht, und einer geschlossenen Position, die dem inaktiven Zustand der Dämpfungsvorrichtung (11) entspricht, in der jegliche Übertragung von Fluid zwischen den Kammern (123) verhindert wird, beweglich montiert ist, wobei jede Kammer (123) mindestens eine elastisch verformbare Einrichtung (128) zur Rückstellung des Kolbens (122) in der Richtung der anderen Kammer (123) aufnimmt.
  5. Hubarbeitsbühne (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Korb (2) einen Boden (14) und Seitenwände (15), die den Boden (14) umgeben, umfasst, dass der Plattformboden (4) sich über dem Boden (14) erstreckt und dass die oder mindestens eine der Dämpfungsvorrichtungen (11), die eine aktivierbare/deaktivierbare Vorrichtung ist, die zwischen dem Ort (5) zur Aufnahme einer Bedienperson des Korbs (2) und dem oberen Ende des Arms (91) angeordnet ist, sich zumindest teilweise zwischen dem Plattformboden (4) und dem Boden (14) des Korbs (2) erstreckt, wobei der Plattformboden (4) und der Boden (14) in der Richtung einer Annäherung oder einer Auseinanderbewegung zu- bzw. voneinander im aktiven Zustand der Dämpfungsvorrichtung (11) beweglich montiert sind.
  6. Hubarbeitsbühne (1) nach Anspruch 5 in Kombination mit einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der Körper (121) des Zylinders (12) der Dämpfungsvorrichtung (11) mit dem Boden (14) des Korbs (2) gekoppelt ist und der Kolben (122) des Zylinders (12) mit dem Plattformboden (4) gekoppelt ist oder umgekehrt, und dass der Kolben (122) und der Körper (121) in dem angetriebenen Zustand zur relativen Verlagerung des Plattformbodens (4) und des Bodens (14) in der Richtung einer Annäherung oder einer Auseinanderbewegung zu- bzw. voneinander im aktiven Zustand der Dämpfungsvorrichtung (11) in Bezug aufeinander beweglich montiert sind.
  7. Hubarbeitsbühne (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die oder mindestens eine der Dämpfungsvorrichtungen (11), die eine aktivierbare/deaktivierbare Vorrichtung ist, die zwischen dem Ort (5) zur Aufnahme einer Bedienperson des Korbs (2) und dem oberen Ende des Arms (91) angeordnet ist, sich zwischen zwei Abschnitten (161, 162) des Korbs (2) erstreckt, und dass die Abschnitte (161, 162) des Korbs (2) im aktiven Zustand der Dämpfungsvorrichtung (11) in Bezug aufeinander beweglich montiert sind.
  8. Hubarbeitsbühne (1) nach Anspruch 7 in Kombination mit einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass einer der Abschnitte (161, 162) des Korbs mit dem oberen Ende des Arms (91) durch die Gelenkverbindung (21) gekoppelt ist, die das obere Ende des Arms (91) mit dem Korb (2) koppelt, wobei diese Gelenkverbindung (21) mindestens eine Schwenkverbindung (18) mit einer so genannten vertikalen Achse umfasst, wobei sich die Achse orthogonal zum Plattformboden (4) erstreckt, und dass der Körper (121) des Zylinders (12) der Dämpfungsvorrichtung (11) mit einem der Abschnitte des Korbs (2) gekoppelt ist und der Kolben (122) des Zylinders (12) mit dem anderen der Abschnitte des Korbs gekoppelt ist, und dass der Kolben (122) und der Körper (121) im aktiven Zustand der Dämpfungsvorrichtung (11) in dem angetriebenen Zustand zur relativen Verlagerung der Abschnitte (161, 162) des Korbs beweglich in Bezug aufeinander montiert sind.
  9. Hubarbeitsbühne (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Arbeitsbühne (1) von dem Typ ist, deren oberes Ende des Arms (91) zum Verlagerungsantrieb des Korbs (2) mit dem Korb (2) durch eine Gelenkverbindung (21) mit mindestens einer verformbaren Parallelogrammstruktur (92) gekoppelt ist, wobei die verformbare Parallelogrammstruktur (92) mit dem oberen Ende des Arms (91) durch eine Schwenkverbindung (13) mit einer so genannten horizontalen Schwenkachse verbunden ist, die zur Längsachse des Arms (91) senkrecht ist, und dass die oder mindestens eine der Dämpfungsvorrichtungen (11), die eine aktivierbare/deaktivierbare Vorrichtung ist, die zwischen dem Ort (5) zur Aufnahme einer Bedienperson des Korbs (2) und dem oberen Ende des Arms (91) angeordnet ist, sich zwischen dem oberen Ende des Arms (91) und der verformbaren Parallelogrammstruktur (92) erstreckt.
  10. Hubarbeitsbühne (1) nach Anspruch 9, dadurch gekennzeichnet, dass die oder mindestens eine der Dämpfungsvorrichtungen (11) mindestens einen Hydraulikzylinder (12) mit einem Körper (121) und einem Kolben (122), der den Körper (121) in zwei Kammern (123) auftrennt, umfasst, der Körper (121) des Zylinders (12) mit dem Arm (91) gekoppelt ist und der Kolben (122) des Zylinders (12) mit der verformbaren Parallelogrammstruktur (92) gekoppelt ist oder umgekehrt, dass die verformbare Parallelogrammstruktur (92) um die Schwenkachse der Schwenkverbindung (13), die den Arm (91) und die verformbare Parallelogrammstruktur (92) koppelt, in dem angetriebenen Zustand zur axialen Verlagerung des Kolbens (122) im Inneren des Körpers (121) beweglich montiert ist, und dass die Dämpfungsvorrichtung (11) einen Hydraulikspeicher (127) in Fluidverbindung mit einer der Kammern (123) des Zylinders (12) durch eine verschließbare Verbindung umfasst, die im aktiven Zustand der Dämpfungsvorrichtung (11) offen ist.
  11. Hubarbeitsbühne (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Vorrichtung (8) zur Bestimmung eines Parameters, der die Winkelposition des Arms (91) darstellt, mindestens einen induktiven Sensor zur Detektion der unteren Endposition des Arms (91) umfasst.
  12. Hubarbeitsbühne (1) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Arbeitsbühne (1) eine Einrichtung (17) zur erzwungenen Aktivierung der Dämpfungsvorrichtung (11) umfasst, wobei diese Einrichtung (17) zur erzwungenen Aktivierung eine Aktivierungseinrichtung mit manueller Betätigung zum Steuern des Übergangs vom inaktiven Zustand in den aktiven Zustand der Dämpfungsvorrichtung (11) im beaufschlagten Zustand der Aktivierungseinrichtung (17) in erzwungener Weise ist.
  13. Hubarbeitsbühne (1) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass dann, wenn das obere Ende des Arms (91) mit dem Korb (2) durch eine Gelenkverbindung (21) mit mindestens einer verformbaren Parallelogrammstruktur (92) gekoppelt ist, der Korb (2) mit der verformbaren Parallelogrammstruktur (92) durch eine Schwenkverbindung (18) mit so genannter vertikaler Achse gekoppelt ist, wobei sich die Achse orthogonal zum Plattformboden (4) erstreckt.
EP22835092.2A 2021-12-09 2022-12-02 Hublift für in der höhe arbeitende personen Active EP4444651B1 (de)

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FR2113198A FR3130263B1 (fr) 2021-12-09 2021-12-09 Nacelle élévatrice pour le travail en élévation de personne
PCT/FR2022/052223 WO2023105141A1 (fr) 2021-12-09 2022-12-02 Nacelle élévatrice pour le travail en élévation de personne

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GB2062258B (en) * 1979-11-01 1983-11-16 Simon Eng Dudley Ltd Safe load indicator
US4653654A (en) * 1984-04-05 1987-03-31 Fmc Corporation Hydraulic crane aerial platform attachment
GB2560328B (en) * 2017-03-07 2021-12-15 Niftylift Ltd Base unit for a vehicle
FR3078062B1 (fr) 2018-02-16 2020-02-21 Manitou Bf Nacelle elevatrice pour l'elevation de personnes et le travail en hauteur desdites personnes

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WO2023105141A1 (fr) 2023-06-15

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