LIFT FOR PEOPLE WORKING AT HEIGHTS

Description

[0001] The present invention relates to a lifting platform for working at height with people.

[0002] It relates in particular to a lifting platform for working at height with persons, said platform comprising a self-propelled chassis, a basket equipped with at least one control for the drive during ground movement of the self-propelled chassis which can be operated manually, a pivoting drive arm during movement at least in upward and downward motion of the basket, mounted movably between an extreme low position close to the ground and an extreme high position away from the ground, a sensor for determining the position of the arm, a device for emitting an audible and / or visual warning signal, a control unit, this platform having at least one operating mode in work configuration and one operating mode in transport configuration, each defined at least by a maximum speed of movement of the self-propelled chassis,The control unit is configured to activate one or the other operating mode depending on the data provided by the arm positioning sensor.

[0003] Such a gondola is known as illustrated by document WO2018 / 229381, which discloses the preamble of claim 1.

[0004] US patent 2012 / 211301 describes a gondola incorporating an accelerometer to determine the platform's motion state. Similarly, US patent 2020 / 317486 describes a gondola incorporating an accelerometer.

[0005] Such a platform presents numerous situations where there is a risk of accidents. Manufacturers of these platforms are therefore seeking solutions that allow for the simple identification of situations where an accident risk exists.

[0006] To this end, the invention relates to a lifting platform for working at height with persons, said platform comprising a self-propelled chassis, a basket equipped with at least one manually actuated ground-based drive control for the self-propelled chassis, a pivoting drive arm for moving the basket at least upwards and downwards, mounted movably between an extremely low position close to the ground and an extremely high position far from the ground, a sensor for determining the arm's position, a device for emitting an audible and / or visual warning signal, a control unit, this platform having at least one operating mode in work configuration and one operating mode in transport configuration, each defined at least by a maximum travel speed of the self-propelled chassis, the control unit being configured to activate one or the other of the operating modes according to the data provided by the sensor.Determination of the arm's position, characterized in that the platform comprises a sensor for determining a parameter representative of a basket's vibration, called the vibration sensor, and an anti-tilt sensor for determining a parameter representative of the chassis's inclination relative to the horizontal; in that the control unit is configured, in working mode, to deactivate the drive control(s) of the self-propelled chassis's ground movement based on data provided by the anti-tilt sensor; in that the control unit is configured, in transport mode, to activate an audible and / or visual warning signal based on data provided by the vibration sensor; and in that the vibration sensor and the anti-tilt sensor are combined into a single sensor in the form of a three-axis accelerometer.mounted on the self-propelled chassis. The choice of a sensor in the form of a three-axis accelerometer mounted on the chassis allows this sensor to be used as an acceleration measurement device along at least the Z-axis in transport mode to detect basket jolts and prompt the platform operator to reduce speed, and as an inclinometer in work mode to detect a dangerous tilt of the chassis relative to the horizontal and prevent the platform from being moved forward from the basket when the chassis tilt is too great. This results in a simplified platform design. It should be noted that the term "jolt" refers to an unwanted movement of the basket, which can be at least an oscillating movement along the Z-axis.

[0007] According to one embodiment of the invention, the platform includes a data storage memory for at least one acceleration threshold value, and the control unit is configured, in transport mode, to compare the acceleration values ​​measured by the shock sensor with said acceleration threshold value(s) and to activate an audible and / or visual warning signal based on the comparison result. In particular, the control unit is configured, in transport mode, to activate an audible and / or visual warning signal from the emission device when the acceleration value along the Z-axis measured by the shock sensor exceeds one or more of the stored acceleration threshold values. The operator is thus alerted to the fact that they are driving in a dangerous manner.

[0008] According to one embodiment of the invention, the nacelle includes a data storage memory of at least one threshold value of the chassis tilt angle relative to the horizontal and the control unit is configured to, in working mode, determine by calculation the value of the chassis tilt angle from values ​​measured by the anti-tilt sensor and compare the calculated value with the threshold value(s) of the tilt angle and command the deactivation of the drive control(s) in ground movement of the self-propelled chassis according to the result of the comparison.The control unit is, in particular, configured to, in working configuration, prevent ground movement of the self-propelled chassis when the value of the chassis's angle of inclination relative to the horizontal, determined from the data provided by the anti-tilt sensor, is greater than the stored threshold angle(s) value(s).

[0009] According to one embodiment of the invention, the control unit is configured to, in working mode, control the device for emitting an audible and / or visual warning signal based on the result of the comparison. In working mode, the control unit can also, in addition to preventing the self-propelled chassis from moving on the ground, control the emission of an audible and / or visual warning signal.

[0010] According to one embodiment of the invention, the platform includes, in at least one of its operating modes, a counter for the number of times a threshold value is exceeded. This data provides information on the risks taken by the platform operator.

[0011] According to one embodiment of the invention, the control unit is configured to, at least in transport mode, control the device for emitting an audible and / or visual warning signal based on data provided by the counter indicating the number of times a threshold value or at least one other value has been exceeded. In transport mode, the control unit is configured to vary the warning signal based on the number of times the threshold value or at least one other value has been exceeded, and, for example, on the duration and / or frequency of the exceedances. In this embodiment, the platform may therefore include a timer and a data storage memory, and the control unit is configured to simultaneously store the data provided by the counter indicating the number of times the threshold value or at least one other value has been exceeded, as well as the storage of data provided by the timer.The control unit can then process this data to vary the alert signal according to the result of the processing.

[0012] According to one embodiment of the invention, the platform includes at least one geolocation device and a memory for storing the geolocation device's position data. The control unit is configured to, in at least one operating mode, command at least one storage of said position data based on data provided by the shock sensor or the tilt sensor. The control unit can thus command, in at least one operating mode, upon exceeding at least one threshold value for inclination or acceleration, the storage of the position data. The data can then be processed to, for example, in working mode, allow the platform operator to display, on a display device, hazard zones resulting, for example, from the irregular profile of the track on which the self-propelled chassis is traveling.This allows the operator of the aerial work platform to adapt their driving in these hazardous areas.

[0013] According to one embodiment of the invention, the gondola includes a radio communication device capable of transmitting data via radio link, and the control unit is configured to control the communication device to enable data transmission. All stored data can be sent to a remote terminal, either before or after processing.

[0014] According to one embodiment of the invention, the control unit is configured to activate the operating mode in transport configuration in the extreme low position of the arm.

[0015] According to one embodiment of the invention, the maximum speed of movement of the self-propelled chassis in the working configuration operating mode is less than the maximum speed of movement of the self-propelled chassis in the transport configuration operating mode.

[0016] According to one embodiment of the invention, the audible and / or visual warning signal emitting device comprises at least one lighting device and / or one display device and / or at least one audible alarm, and at least part of the audible and / or visual warning signal emitting device is preferably located in the basket. The various shapes that the audible and / or visual warning signal emitting device can take allow the shape and intensity of the signal to be easily adapted to the driving conditions. Brief description of the drawings

[0017] The invention will be better understood upon reading the following description of exemplary embodiments, with reference to the attached drawings in which: [ Fig. 1 ] represents a perspective view of a gondola according to the invention in operating mode in a working configuration corresponding to a position other than the lowest extreme position of the arm; [ Fig. 2 ] represents schematically the inputs and outputs of the control unit; [ Fig. 3 ] represents a perspective view of a gondola according to the invention in operating mode in transport configuration corresponding to the lowest extreme position of the arm; [ Fig. 4 ] represents a view of the basket with details of the alert signal emission device; [ Fig. 5 ] represents schematically angles of inclination taken in an X, Y, Z reference frame to illustrate the link between acceleration measurement and determination of angle of inclination.

[0018] As mentioned above, the invention relates to a platform 1 for working at height with people. This platform 1 comprises a self-propelled chassis 3 and a basket 2 equipped with at least one control 7 for the ground-based drive of the self-propelled chassis 3. This control 7 is manually operable. The platform 1 further comprises a pivoting drive arm 4 for the basket 2, which is moved at least upwards or downwards. This arm 4 is movably mounted between a low position close to the ground and a high position far from the ground. The platform 1 includes a sensor 5 for determining the position of the arm 4 and a device 8 for emitting an audible and / or visual warning signal. This platform 1 also includes a control unit 6.

[0019] Basket 2 features a platform with a designated operator reception area. This work platform consists of a floor and guardrails surrounding the floor, while still allowing access to the platform's interior. The operator typically stands inside the platform's reception area, facing a control panel mounted on the platform. This control panel is generally positioned at an angle to the platform floor, along the platform's guardrail. The control panel is equipped with at least one, preferably several, manually operated controls, such as buttons, levers, or other devices. These controls include the ground-based drive control(s) for the self-propelled chassis 3. Basket 2 is also equipped with drive controls for raising and lowering the basket. These controls will be described in more detail below.

[0020] Here, a self-propelled chassis 3 is defined as a chassis equipped with means for movement on the ground surface of the chassis 3. These means of movement on the ground surface of the chassis 3, using wheels or tracks, include at least one engine and a transmission of the rotational motion from the engine's drive shaft to the wheels or tracks. Details of such a transmission will not be provided, as it is well known to those skilled in this field. The chassis 3 is therefore a motorized chassis equipped with wheels and / or tracks.

[0021] The platform also includes means for raising the basket 2 relative to the chassis 3, which in this case include a pivoting arm 4. These lifting means are located between a connection point on the basket 2 and the chassis 3. This lifting arm 4 may be formed of one or more arm sections articulated to one another, as in the example shown. This arm 4 may also be telescopic or non-telescopic. For moving the arm from its lowered to its raised position, the platform may include a hydraulic pump coupled, for example, to the internal combustion engine of the ground-based propulsion means, and at least one hydraulic actuator, in this case, at least one cylinder located between the arm 4 and the chassis 3, and several actuators located between the arm sections when the arm is in multiple sections.

[0022] Each cylinder is supplied with hydraulic fluid by the hydraulic pump. Again, the details of this operation will not be provided, as it is well known to those versed in this field. The arm 4 is pivotally coupled to the chassis 3 by a pivot joint. This pivot joint pivots around a horizontal axis when the platform 1 is positioned on a horizontal flat surface. This arm 4, which drives the movement of the basket 2 up and down, is therefore, at least by this pivot joint, mounted flexibly between a very low position close to the ground and a very high position far from the ground.

[0023] To determine the position of the arm 4, the nacelle 1 includes a position sensor 5 for arm 4. This sensor 5 allows at least the detection of the lowest extreme position of the arm 4 and can, for example, be a simple switch activated in the lowest extreme position of the arm 4. This position sensor 5 for arm 4 can also be a sensor for detecting the angular position of the arm, in particular the section of the arm coupled to the chassis for pivoting in the case of an arm 4 with multiple arm sections. The lowest extreme position is therefore understood here to mean that at least the part of the arm 4 closest to the chassis 3 is in a position in which the position sensor 5 detects the arm 4 in that position or the arm entering or exiting that position.

[0024] As mentioned above, the platform 1 includes controls for said platform 1. For this purpose, the basket 2 can be equipped with a control panel comprising, for example, one or more levers, also known as joysticks. For instance, a first lever may be provided for actuating the lifting arm, a second lever for controlling the forward / reverse movement of the rolling chassis, and, if the arm is mounted on a rotating turret of the chassis, a third lever for controlling the rotation of the turret, as illustrated in the figure 4 All movements of these levers can be measured by transducers and provided as electrical signals to the control unit 6, which will be described below. In this embodiment, the second lever forms the control 7 for the ground-based drive of the chassis 2.

[0025] The nacelle also includes, as mentioned above, a control unit 6. This control unit is an electronic and computer system that includes, for example, a microprocessor and working memory. In a particular configuration, the control unit may be a programmable logic controller (PLC).

[0026] In other words, the functions and steps described can be implemented as a computer program or via hardware components (e.g., programmable gate arrays). Specifically, the functions and steps performed by the control unit 6 or its modules can be implemented by instruction sets or computer modules implemented in a processor or controller, or by dedicated electronic components, or by components such as field-programmable gate arrays (FPGAs), or application-specific integrated circuits (ASICs). It is also possible to combine computer and electronic components.

[0027] When it is specified that the control unit 6 or means or modules of said unit are configured to perform a given operation, this means that the control unit 6 includes computer instructions and the corresponding means of execution which enable the said operation to be performed and / or that the control unit 6 includes corresponding electronic components.

[0028] This control unit 6 is capable of receiving input data and delivering output data. This control unit 6 is configured to control the lifting means, and in particular, the movement of the boom, as well as the ground-based drive means for the self-propelled chassis, according to the data provided by the controls located on the platform. In addition to the controls located on the platform, the platform 1 may include a control station mounted on the chassis 3, called the ground control station. This ground control station allows an operator experiencing difficulties in the platform 2 to be assisted and operations to be performed on the platform 1 without having to enter the platform 2.

[0029] The gondola 1 also includes, as mentioned above, a device 8 for emitting an audible and / or visual warning signal, at least part of which may be located at the level of the basket, in particular at the level of the control console, as described above.

[0030] This audible and / or visual warning signal 8 comprises at least one lighting device 81 and / or one display device 83 and / or one audible alarm 82. The lighting device 81 may, for example, be a rotating beacon. The display device 83 may comprise at least one display screen. The alarm 82 may consist of a siren emitting a continuous or intermittent audible signal.

[0031] The platform 1 has at least one operating mode in the working configuration and one operating mode in the transport configuration, each defined by at least one maximum travel speed of the self-propelled chassis 3. The maximum travel speed of the self-propelled chassis 3 in the working configuration is lower than the maximum travel speed of the self-propelled chassis 3 in the transport configuration. Thus, when the ground drive control 7 of the self-propelled chassis 3 is in a position corresponding to the maximum travel speed, for example, forward movement of the chassis 3, the maximum travel speed of the chassis 3 is a function of one of the platform's operating modes.As an example, this maximum travel speed is around 0.7 km / h in working mode and around 5 km / h in transport mode.

[0032] The control unit 6 is configured to activate one of the operating modes based on data provided by the arm 4 positioning sensor 5. Specifically, the control unit 6 is configured to activate the transport mode in the arm 4's fully extended position. Therefore, as soon as the arm 4 positioning sensor 5 detects that the arm is in its fully extended position, data from the arm 4 positioning sensor 5 is sent to the control unit 6, and the transport mode is activated. It should be noted that in the case of a telescopic arm, the transport configuration of the gondola corresponds not only to the lowered position of the arm but also to the retracted position of the telescope.

[0033] The gondola 1 also includes a sensor for determining a parameter representative of a shock to the basket 2, called the shock sensor and shown as 9 in the figures, as well as a so-called anti-tilt sensor, shown as 10 in the figures. The anti-tilt sensor 10 is a sensor for determining a parameter representative of the inclination of the chassis 3 relative to the horizontal. The shock sensor 9 and the anti-tilt sensor 10 are formed by a single sensor in the form of a three-axis accelerometer mounted on the self-propelled chassis 3. Indeed, it is possible, from acceleration measurements, to calculate the inclination angle values ​​of the structure carrying said accelerometer, as illustrated by the formulas below associated with the figure 5 . θ = tan − 1 A X A Y 2 + A Z 2 ψ = tan − 1 A Y A X 2 + A Z 2 ϕ = tan − 1 A X 2 + A Y 2 A Z

[0034] The acceleration A is expressed in ms -2< .

[0035] Each angle is expressed in degrees.

[0036] Positioning this accelerometer on the chassis allows for the determination of the chassis's inclination relative to the horizontal, while simultaneously providing a Z-axis image of the basket's vibrations. Indeed, the vibrations of basket 2 are considered to correspond to the vibrations experienced by the chassis, up to a multiplicative factor. This results in a simplified design for the gondola.

[0037] In the working configuration mode, the control unit 6 is configured to command an inactivation of the control(s) 7 of the drive in ground movement of the self-propelled chassis according to the data provided by the anti-tilt sensor 10. In practice, the platform 1 includes a memory 12 for storing data of at least one threshold value of the inclination of the chassis 3 with respect to the horizontal and the control unit 6 is configured to, in the working configuration mode, determine by calculation the value of the inclination angle of the chassis 3 with respect to the horizontal, i.e. with respect to Y, from the acceleration values ​​measured by the anti-tilt sensor 10 as illustrated above.

[0038] The control unit 6 is further configured to compare the calculated value with the stored tilt threshold value(s) and to deactivate the control(s) 7 for the ground movement drive of the self-propelled chassis 3 based on the comparison result. Generally, the tilt threshold value relative to the horizontal of the chassis 3 is approximately 4 or 5°. Deactivating the control(s) 7 for the ground movement drive of the chassis 3 means that any action by the operator in the basket 2 on the control(s) 7 for the ground movement drive of the chassis 3 has no effect on the ground movement drive of the chassis 3.It matters little whether this inactivation results, for example, from the non-transmission of movements or signals from the control unit(s) 7 of the ground movement drive of the chassis to the control unit 6 or from the failure of the control unit 6 to take into account the movements or signals from the control unit(s) 7 of the ground movement drive of the chassis 3.

[0039] In transport configuration mode, i.e., with arm 4 in its lowest position as detected by arm position sensor 5, the control unit 6 is configured to activate at least device 8 for emitting an audible and / or visual warning signal based on data provided by shock sensor 9. This shock sensor 9 measures acceleration along the Z-axis of chassis 3. This acceleration measurement along the Z-axis of chassis 3 is considered representative of the shocks experienced by the operator at the level of the basket 2.

[0040] In practice, the gondola 1 includes a data storage memory 11 containing at least one threshold value for acceleration along the Z-axis, and the control unit 6 is configured for transport mode. This mode compares the acceleration value measured by the shock sensor 9 with the threshold value(s) and commands the device 8 to emit an audible and / or visual warning signal based on the comparison result. Each acceleration value measured by the shock sensor 9 is an acceleration value measured along the Z-axis. Although the shock sensor 9 is located on the chassis 3, each Z-axis acceleration value provided is an excellent representation of the shocks experienced at the basket 2. Generally, the threshold value for acceleration along the Z-axis is on the order of 1.5 g, or approximately 15 m / s².

[0041] In transport mode, the warning signal can take many forms. For example, if the acceleration threshold is exceeded, both the excess value and the ground speed of the platform can be considered. Depending on the magnitude of the shock and the risk of operator ejection from basket 2 in the case of a violent shock, the alert can vary. For instance, in less problematic situations (minor shock), it might display an image on the control panel via the display device 83, such as a screen, located on the basket's control panel. If the risk increases, a warning light, such as a flashing light integrated into a lighting device 81 located on the basket, can be activated.Finally, a display on the display device 83, combined with the emission of an audible signal via an audible alarm 82 located in the basket, can be considered. A display can also be provided on the display device equipping the chassis 3. Obviously, these examples of emitting an alert signal can be combined or modified without departing from the scope of the invention.

[0042] In working configuration, the control unit 6 can, in addition to controlling the deactivation of the drive control(s) 7 for the self-propelled chassis 3's ground movement, control the device 8 for emitting an audible and / or visual warning signal based on the result of comparing the chassis's tilt angle relative to the horizontal, determined from acceleration values ​​measured by the anti-tilt sensor 10, with the stored tilt angle threshold(s). When the tilt angle threshold is exceeded, the warning signal can vary according to the tilt angle and the risk involved, in the same way as described above for shocks of varying amplitude.

[0043] The platform may include a counter 13 for the number of times the threshold value or at least one of the threshold values ​​is exceeded. This counter 13 for the number of exceedances may be active in at least one of the operating modes, preferably in each operating mode of the platform 1. This counter 13 for the number of exceedances allows for monitoring the use of the platform 1. The increment of this counter 13 for the number of exceedances may occur each time a threshold value is exceeded, or after a predetermined number of exceedances, or even based on the value of the exceedance. Similarly, the control of the device 8 for emitting an audible and / or visual warning signal may be based on the data provided by the counter 13 for the number of exceedances of the threshold value or at least one of the threshold values ​​in an operating mode. This number of exceedances may also be quantified over time to provide a snapshot of the platform's usage.Again, it can be concluded that the nacelle is under significant stress when the number of times the threshold value is exceeded, for example per week, particularly in transport mode, is high. For this purpose, the nacelle may include a timer 14, which may be at least partially composed of a clock and a memory 15 for storing the number of times a threshold value is exceeded per unit of time.

[0044] To optimize the monitoring of platform usage and provide the best possible alerts to the platform operator, platform 1 includes at least one geolocation device 16 and a memory 17 for storing the position data of the geolocation device 16. The control unit 6 is configured to, in at least one operating mode, command at least one storage of said position data based on the data provided by the shock sensor 9 or the tilt sensor 10. Thus, the control unit 6 can be configured to, each time a threshold value is exceeded in at least one of the operating modes, store the position data corresponding to the location where the threshold value is exceeded.It is therefore possible to identify risk areas which can be subsequently displayed, for example, at the level of the basket's control panel, to alert the driver of the platform to a danger on the road, such as a hole or other.

[0045] In light of the above and as illustrated in the figure 2 , the piloting unit 6 is capable of receiving input data which may include either logical information for lifting, displacement or other, or measurements from sensors and of emitting output data which may be control instructions, indicative information, these input and output data being dependent on the operating mode of the nacelle 1.

[0046] Input data may come from communication with the outside of the nacelle, in particular with a remote terminal.

[0047] Similarly, the output data can be transferred to a remote terminal. For this purpose, the nacelle 1 includes a radio communication device 18 capable of transmitting data via radio link, and the control unit 6 is configured to control the communication device 18 to enable data transmission. This radio communication device 18 is conventionally composed of transmitters / receivers, which are known in themselves. Therefore, it will not be described in detail.

[0048] In practice, the operation of a platform as described above is as follows. Platform 1 is by default in transport mode because the arm 4 is generally in its lowest position when platform 1 starts up. The operator sits in the basket 2 to control the ground movement of the chassis 3 and the lifting of the basket 2 from said basket 2. As soon as the operator commands the arm 4 to rise from the basket, as detected by the arm 4 position sensor 5, platform 1 switches to work mode.In this working configuration mode, as soon as the control unit 6 determines, from the data provided by the anti-tilt sensor 10, an inclination of the chassis 3 relative to the horizontal greater than a memorized threshold value, it commands the inactivation of the drive control(s) 7 for ground movement of the chassis 3 to prevent the nacelle from tipping over.

[0049] When the ground-based drive control(s) 7 of the chassis 3 have been deactivated, the platform operator must lower the arm 4 to return to transport mode and thus move the chassis 3 to a new position where the tilt is not critical. In transport mode, the control unit 6 triggers a warning signal when the shock sensor 9, which measures only the chassis's Z-axis acceleration, provides an acceleration value exceeding a predetermined Z-axis acceleration threshold. This indicates the risk of the operator being subjected to shocks that could lead to ejection from the basket if the operator in the basket does not reduce the speed of the platform 1.

[0050] Of course, in transport configuration mode, an alert can also be issued when the inclination of chassis 3 relative to the horizontal is greater than a memorized threshold value, but exceeding this threshold value has no effect on the ground movement of chassis 3.

Claims

1. An aerial lift (1) for persons working at height, said aerial lift (1) comprising a self-propelled chassis (3), a basket (2) equipped with at least one manually operable control (7) for driving the self-propelled chassis (3) along the ground, a pivoting arm (4) for at least raising and lowering the basket (2), mounted movably between an extreme low position close to the ground and an extreme high position away from the ground, a sensor (5) for determining the position of the arm (4), a device (8) for emitting an audible and / or luminous warning signal, a control unit (6), this aerial lift (1) having at least one working configuration operating mode and one transport configuration operating mode, each defined at least by a maximum movement speed of the self-propelled chassis (3), the control unit (6) being configured to activate either of the operating modes according to the data provided by the sensor (5) for determining the position of the arm (4), characterized in that the aerial lift (1) comprises a sensor for determining a parameter representing a shock affecting the basket (2), referred to as a shock sensor (9), and a so-called anti-roll sensor (10) for determining a parameter representing the inclination of the chassis (3) with respect to the horizontal, in that the control unit (6) is configured, in the working configuration operating mode, to deactivate the control or controls (7) for driving the self-propelled chassis along the ground according to the data supplied by the anti-roll sensor (10), in that the control unit (6) is configured, in the transport configuration operating mode, to control the device (8) for emitting an audible and / or luminous warning signal according to the data provided by the shock sensor (9), and in that the shock sensor (9) and the anti-roll sensor (10) are formed by one and the same sensor in the form of a three-axis accelerometer arranged on the self-propelled chassis (3).

2. The aerial lift (1) as claimed in claim 1, characterized in that the aerial lift (1) comprises a memory (11) for storing data on at least one acceleration threshold value, and in that the control unit (6) is configured, in the transport configuration operating mode, to compare the acceleration values measured by the shock sensor (9) with said acceleration threshold value or values and to control the device (8) for emitting an audible and / or luminous warning signal according to the result of the comparison.

3. The aerial lift (1) as claimed in either of claims 1 and 2, characterized in that the aerial lift (1) comprises a memory (12) for storing data on at least one threshold value for the inclination angle of the chassis (3) with respect to the horizontal and in that the control unit (6) is configured, in the working configuration operating mode, to calculate the inclination angle value of the chassis (3) using values measured by the anti-roll sensor (10) and to compare the calculated value with the inclination angle threshold value or values and to deactivate the control or controls (7) for driving the self-propelled chassis (3) along the ground according to the result of the comparison.

4. The aerial lift (1) as claimed in claim 3, characterized in that the control unit (6) is configured, in the working configuration operating mode, to control the device (8) for emitting an audible and / or luminous warning signal according to the result of the comparison.

5. The aerial lift (1) as claimed in one of claims 2 to 4, characterized in that said aerial lift (1) comprises, in at least one of the operating modes, a counter (13) for the number of times the threshold value or at least one threshold value is exceeded.

6. The aerial lift (1) as claimed in claim 5, characterized in that the control unit (6) is configured, at least in the transport configuration operating mode, to control the device (8) for emitting an audible and / or luminous warning signal according to the data supplied by the counter (13) for the number of times the threshold value or at least one threshold value is exceeded.

7. The aerial lift (1) as claimed in one of claims 1 to 6, characterized in that the aerial lift (1) comprises at least one geolocation device (16) and a memory (17) for storing position data from the geolocation device (16), and in that the control unit (6) is configured, in at least one operating mode, to command at least one storage of said position data according to the data provided by the shock sensor (9) or the anti-roll sensor.

8. The aerial lift (1) as claimed in one of claims 1 to 7, characterized in that said aerial lift (1) comprises a radio link communication device (18) capable of transmitting data by radio link, and in that the control unit (6) is configured to control the communication device (18) to enable data transmission.

9. The aerial lift (1) as claimed in one of claims 1 to 8, characterized in that the control unit (6) is configured to activate the transport configuration operating mode when the arm (4) is in the extreme low position.

10. The aerial lift (1) as claimed in one of claims 1 to 9, characterized in that the maximum movement speed of the self-propelled chassis (3) in the working configuration operating mode is lower than the maximum movement speed of the self-propelled chassis (3) in the transport configuration operating mode.

11. The aerial lift (1) as claimed in one of claims 1 to 10, characterized in that the device (8) for emitting an audible and / or luminous warning signal comprises at least one lighting device (81) and / or a display device (83) and / or at least one audible alarm (82), and in that at least one part of the device (8) for emitting an audible and / or luminous warning signal is preferably arranged on the basket (2)