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
  • B66F11/042—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 actuated by lazy-tongs mechanisms or articulated levers
• • 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

Definitions

• Nacelle in particular lifting nacelle to allow work at elevation
• the present invention relates to a nacelle, in particular a lifting nacelle to allow work in elevation.
• the invention relates in particular to a nacelle comprising:
• At least one technical tray mounted movably between a retracted position in the chassis and a position at least partially extended from the chassis in which said tray extends at least partially offset laterally relative to the chassis to allow access to the contents of said tray ,
• control unit being configured at least to acquire data from the manual control device and to control the platform displacement drive device and the chassis ground displacement drive system at least according to the data provided by the manual control device.
• Such a nacelle is known as illustrated, for example, by patents US2019/309901 or CN109502522.
• This nacelle comprises at least one, generally two, technical trays arranged side by side at the level of the frame.
• Each technical tray open from above is a sliding tray or a pivoting tray for the passage of the tray from a retracted position in the frame to a position at least partially out of the frame in which it extends at least partially laterally with respect to the frame.
• a pivoting tray said tray is pivotally mounted around a so-called vertical axis, orthogonal to the support plane on the ground of the frame in the positioned state of the frame on a flat horizontal surface.
• Each bin is said to be technical because it generally includes, in particular, electrical or hydraulic components necessary for the proper operation of the platform.
• one of the trays can contain batteries, a counterweight, a tank, the control unit of the nacelle or other while the other tray can contain hydraulic elements, such as pumps. With such bins, the risk of accidents is increased.
• An object of the invention is to provide a nacelle whose design makes it possible to limit the risk of accidents linked to the presence of technical containers.
• An object of the invention is to provide a nacelle whose design makes it possible to make the nacelle safer without harming the ease of maintenance of the nacelle.
• a nacelle comprising:
• At least one technical tray mounted movably between a retracted position in the chassis and a position at least partially extended from the chassis in which said tray extends at least partially offset laterally relative to the chassis to allow access to the contents of said tray ,
• control unit being configured at least to acquire data from the manual control device and to control the platform displacement drive device and the chassis ground displacement drive system at least depending on the data supplied by the manual control device
• the nacelle comprises, for the or each technical tank, at least one sensor for detecting the retracted or extended position of the tank, and in that the unit of control is configured to control the drive system on the ground of the chassis at least according to the data supplied by the sensor for detecting the retracted or extended position of the tray, said unit of control being configured to prevent the operation of the drive system on the ground of the chassis when the or at least one of the trays is in the position at least partially extended from the chassis.
• control unit is configured to prevent the operation of the chassis ground drive system when the or at least one of the bins is in the position at least partially removed from the chassis, this results in the possibility of reduce the risk of accident in the event of untimely removal of the bin or one of the bins.
• the risk of accident is reduced during the maintenance phases of the nacelle when it may be necessary to take out the tray(s) to carry out the maintenance operations insofar as it is not possible to control the movement at the chassis floor.
• the manual control device of the platform displacement drive device and of the chassis ground drive system comprises at least one control console carried by the platform, this control panel comprising at least one manual control of the drive device in movement of the platform and a manual control of the drive system on the ground of the chassis, and the control unit is configured to authorize/prohibit the control of the system drive on the ground of the chassis and of the drive device in displacement of the platform from the control console carried by the platform at least according to the data supplied by the sensor for detecting the retracted or extended position of the tray. This results in a reduced risk of an accident.
• the control unit is configured to prohibit any control of the ground drive system of the chassis and of the drive device in movement of the platform from the control console carried by the platform when the tray or at least one of the trays is in position at least partially out of the frame.
• the risk of an accident for an operator occupying the platform and resulting from a reversal of the platform due to a position at least partially extended from the or one of the bins is reduced.
• the frame of the nacelle comprises at least one tilt sensor, the or at least one of the tilt sensors cant being a sensor for determining a parameter representative of an inclination of the chassis relative to a reference plane corresponding to the support plane on the ground of the chassis in the positioned state of the chassis on a flat horizontal surface, and the unit for controlling the platform displacement drive device and the chassis ground displacement drive system is configured to acquire data from the tilt sensor(s) and to control the platform displacement drive device at least according to the data provided by the tilt sensor(s) and the sensor for detecting the retracted or extended position of the tank.
• this tilt sensor it may be possible to control the movement of the platform under certain conditions, including in the state at least partially removed from the or one of the trays.
• This arrangement makes it possible to carry out certain maintenance operations, such as calibrations or an oil change in the platform elevation circuit or battery voltage monitoring, which require the platform to be driven in motion at the state taken out of the technical tray(s) of the chassis without harming the safety of the operator.
• the manual control device of the platform displacement drive device and of the ground displacement drive system of the chassis comprises at least one control console adapted to be carried by the chassis, this control console comprising at least one manual control of the drive device in displacement of the platform and the control unit is configured to authorize/prohibit the control of the drive device in displacement of the platform at from the control console at least according to the data provided by the sensor for detecting the retracted or extended position of the bin and the tilt sensor.
• the control unit is configured to prohibit any control of the driving device in displacement of the platform from the control console when the tray or at least one trays is in position at least partially out of the frame and when the tilt sensor detects an inclination of the frame greater than a predetermined value.
• the tilt sensor is an accelerometer carried by the chassis. This arrangement allows easy and safe piloting.
• the nacelle comprises at least one device for transmitting an alert signal and the control unit is configured to control the device for transmitting a warning signal. alert at least according to the data supplied by the sensor for detecting the retracted or extended position of the tray.
• the control unit is configured to control the transmission by the transmission system of an alert signal when the or at least one of the trays is in the at least partially extended position.
• FIG. 1 shows a perspective view of a nacelle according to the invention in the high position of the platform
• FIG. 2 shows a side view of a nacelle according to the invention in the low position of the platform
• FIG. 3 shows a perspective view of the chassis of a nacelle according to the invention in the position at least partially extended from one of the trays of the chassis;
• FIG. 4 shows a perspective view of the chassis of a nacelle according to the invention in the retracted position of one of the chassis trays;
• FIG. 5 shows a rear view of a chassis to illustrate the tilt sensor
• FIG. 6 represents a simplified view of the control unit with its inputs and outputs.
• the invention relates to a nacelle 1 allowing the work in elevation of person.
• This nacelle comprises a chassis 2 called self-propelled, that is to say motorized, equipped with a system 3 drive motor in movement on the ground of the chassis 2.
• the self-propelled chassis 2 is preferably a rolling chassis 2 of which at least some of the wheels are driven.
• frame 2 is equipped with four wheels.
• the chassis 2 could be equipped with caterpillars or other drive members moving the chassis 2 on the ground, without departing from the scope of the invention.
• the system 3 for driving the chassis 2 on the ground therefore comprises one or more motors.
• one or more wheels of the frame 2 are driving wheels.
• the drive wheels are wheels connected to an electric motor integrated into the frame 2.
• some wheels are steered wheels, having a variable orientation relative to the frame 2, to allow directing the nacelle 1 .
• the electric motor(s) can be replaced by a heat engine connected to the wheels via a transmission, preferably hydrostatic, which can include a hydrostatic pump and hydraulic motors each associated with a so-called driving wheel.
• a transmission preferably hydrostatic, which can include a hydrostatic pump and hydraulic motors each associated with a so-called driving wheel.
• the nacelle 1 also includes a platform 4 having a location 5 for receiving an operator.
• This work platform 4 is here formed of a floor, guardrails surrounding the floor while allowing access to the interior of said platform.
• the interior of the platform 4 delimited by the guardrail therefore forms the location 5 for receiving an operator from the platform 4.
• the operator is generally standing inside the reception location 5 of the platform 4.
• the nacelle 1 further comprises a device 6 for driving the platform 4 in displacement disposed at least partially between the frame 2 and the platform 4, for the passage of the platform 4 from a low position to a high position and Conversely.
• This device 6 for driving the platform 4 in displacement can affect a large number of shapes.
• the platform 4 can be connected to the frame 2 by an elevation structure comprising at least one actuator of the elevation structure.
• Actuator and elevation structure form at least part of the device 6 for driving the platform 4 in displacement.
• the elevation structure may comprise at least one arm pivoting around a horizontal axis, and the actuator is an actuating cylinder for said arm extending between the arm and the frame.
• This arm can be a telescopic arm.
• the lifting structure can be a scissor-type structure and actuators such as jacks can be provided for driving the scissors in motion.
• the nacelle 1 comprises at least one technical tray 7 mounted movably between a retracted position in the chassis 2 and a position at least partially extended from the chassis 2, in which said tray 7 extends at least partially offset laterally by relative to chassis 2, to allow access to the contents of tray 7.
• the frame 2 affects, seen from above, a quadrangular shape in particular rectangular.
• This frame 2 is in the form of a block, inside which is provided a space for receiving the bin or bins.
• This frame 2 has two longitudinal edges taken with reference to the longitudinal axis of the frame 2 which extends from a front end towards a rear end of the frame 2.
• the trays 7, which here are two in number, s extend into position at least partially out of the frame 2, projecting from a longitudinal edge of the frame 2, as shown in Figure 3, with one of the trays which projects from one of the longitudinal edges of the frame and the other tray which projecting from the other longitudinal edge of frame 2.
• the invention also applies to a frame 2 fitted with a single tray.
• Each tray 7 is open from above, to allow access to the interior of the tray, in the at least partially extended position.
• Each tray 7 is said to be technical, because it houses elements or organs necessary for the proper functioning of the nacelle, such as batteries, pumps, a fluid reservoir or others.
• Each technical tray 7 can, for its passage from one position to another, be a sliding or pivoting tray. It is the second solution which is shown in Figure 3, where the tray pivots around a so-called vertical axis, extending vertically in the positioned state of the frame 2 on a flat horizontal surface.
• the nacelle 1 further comprises a manual control device 8, that is to say manual actuation of the device 6 for driving the platform 4 in displacement and of the system 3 for driving the chassis on the ground. 2.
• the manual control device 8 of the device 6 for driving the platform 4 in displacement and of the system 3 for driving the chassis 2 on the ground comprises at least one control panel 81 carried by the platform. 4.
• This control panel 81 comprises at least one manual control 811 that is to say operable by the operator of the device 6 for driving the platform 4 in displacement and a manual control 812 that is to say say operable by the operator of the ground drive system 3 of the chassis 2. [0048]
• This control panel 81 is generally arranged at a distance from the floor of the platform, along the railing of the platform, as illustrated in FIG.
• the commands 811, 812 manually operable console 81 control can be formed by buttons, levers or others.
• the manual control 811 of the device 6 for driving the movement of the platform 4 allows, at the level of the platform 4, from the control panel 81, the control of the device 6 for driving the movement of the platform 4 by actuation of at least one actuator of the elevation structure, to allow movement up and down the platform.
• the manual control 812 of the drive system 3 on the ground of the chassis allows, at the level of the platform 4, from the console 81 of control, the control of the drive system 3 in movement on the ground of the chassis 2 by control of one or more motors.
• the manual control device 8 of the device 6 for driving the platform 4 in displacement and the system 3 for driving the chassis 2 on the ground further comprises at least one console 82 of control capable of being carried by the chassis 2.
• This control console 82 includes at least one manual control 821 of the device 6 for driving the platform 4 in displacement.
• this control console 82 is installed along one side of the frame, on the front of one of the technical trays 7.
• the manual control 821 that is to say with manual actuation, of the device 6 for driving the platform 4 in displacement, in particular when raising and lowering the platform 4, can be formed by a lever, a button or the like.
• the nacelle 1 comprises a unit 9 of piloting.
• Said control unit 9 is in the form of an electronic and computer system which includes for example a microprocessor and a working memory.
• the control unit can take the form of a programmable automaton. That is, the described functions and steps can be implemented as a computer program or via hardware components (eg programmable gate arrays).
• control unit or its modules can be performed by instruction sets or computer modules implemented in a processor or controller or be performed by dedicated electronic components or components of the logic circuit type.
• programmable or FPGA which is the acronym for field-programmable gate array, which literally corresponds to in-situ programmable gate array
• ASIC acronym of English application-specific integrated circuit, which literally corresponds to integrated circuit specific to an application. It is also possible to combine computer parts and electronic parts.
• the unit or means or modules of said unit are configured to carry out a given operation
• Said control unit 9 is therefore configured to acquire data from the manual control device 8 and to control the device 6 for driving the movement of the platform 4 and the system 3 for driving the movement on the ground of the chassis 2 at least in depending on the data provided by the manual control device 8.
• the latter comprises a sensor 10 for detecting the retracted or extended position of the tray 7 for each technical tray 7 equipping said nacelle.
• This sensor 10 for detecting the position of each tray can be, for example, an inductive sensor mounted on the frame or the tray 7.
• each technical tray 7 can be held in the retracted position inside the frame 2 using a lock that can be operated manually by the operator. Such a lock can limit the risks of untimely exit from the associated tray.
• the control unit 9 is configured to control the ground drive system 3 of the chassis 2 at least according to the data supplied by the sensor 10 for detecting the retracted or extended position of the tray 7, said unit 9 control being configured to prevent the operation of the ground drive system 3 of the chassis 2 when the or at least one of the trays 7 is in the position at least partially extended from the chassis 2.
• control unit 9 is configured to authorize/prohibit the control of the device 6 for driving the platform 4 in displacement from the control panel 81 carried by the platform 4, at least according to the data supplied by the sensor 10 for detecting the retracted or extended position of tray 7.
• control unit 9 is configured to prohibit any control of the device 6 for moving the platform 4 from the control console 81 carried by the platform 4, when the tray 7 or at least one of the trays 7 is in position at least partially out of the frame 2.
• the chassis 2 of the nacelle further comprises at least one tilt sensor 11 .
• a single tilt sensor 11 is shown, but the nacelle 1 could have included several, without departing from the scope of the invention.
• This cant sensor 11 is a sensor for determining a parameter representative of an inclination of the frame 2 with respect to a reference plane corresponding to the support plane on the ground of the frame 2, in the positioned state of the chassis 2 on a flat horizontal surface.
• this cant sensor 11 is an accelerometer carried by the chassis 2. This accelerometer makes it possible to detect a chassis inclination relative to a horizontal reference plane, in the front/rear or left/right direction. of chassis 2.
• the control unit 9 of the device 6 for driving the platform 4 in displacement and of the system 3 for driving the chassis 2 on the ground is configured to acquire data from the tilt sensor(s) 11 and to control the device 6 for driving the platform 4 in displacement, at least according to the data supplied by the tilt sensor(s) 11 and the sensor 10 for detecting the retracted or extended position of the tray 7.
• control unit 9 is configured to authorize/prohibit the control of the device 6 for moving the platform 4 from the control console 82 at least according to the data provided by the sensor. 10 for detecting the retracted or extended position of the tray 7 and of the tilt sensor 11 .
• said control unit 9 is configured to prohibit any control of the drive device 6 in displacement of the platform 4 from the control console 82, when the tray 7 or at least one of the trays 7 is in position at least partially out of the frame 2 and when the tilt sensor 11 detects an inclination of the frame 2 greater than a predetermined value.
• the operator can actuate the manual control device 8 of the device for driving the movement of the platform 4 and of the system 3 for driving the movement on the ground of the chassis 2, but the data supplied by this manual control device 8 are not transmitted by the control unit 9 to the device 6 for driving the movement of the platform 4 and to the system 3 for driving the movement on the ground of the chassis 2, so that any displacement is impossible.
• the nacelle 1 comprises at least one device for transmitting an alert signal 12, and the control unit 9 is configured to control the device for emitting a warning signal 12 at least according to the data supplied by the sensor 10 for detecting the retracted or extended position of the tray 7.
• control unit 9 is configured to control the emission of a warning signal 12 which can be an auditory or visual signal, when the at least partially extended position of the tray 7 is detected.
• a warning signal 12 which can be an auditory or visual signal

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• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Mechanical Engineering (AREA)
• Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
• Invalid Beds And Related Equipment (AREA)
• Component Parts Of Construction Machinery (AREA)

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Citations (1)

Family Cites Families (3)

• 2021
  • 2021-09-29 FR FR2110269A patent/FR3127488B1/fr active Active
• 2022
  • 2022-08-18 US US18/696,571 patent/US20240383734A1/en active Pending
  • 2022-08-18 EP EP22765940.6A patent/EP4408787A1/de active Pending
  • 2022-08-18 WO PCT/FR2022/051586 patent/WO2023052694A1/fr not_active Ceased

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