• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Oscillating axle for a lifting device, lifting device comprising such an axle and control method This oscillating axle (3) for a lifting device (1) comprises an axle bridge (5) at the ends of which are mounted two lifting members. ground connection (7), an axis of oscillation (X3), a left cylinder (9) and a right cylinder (11), each cylinder (9, 11) having a rod (90, 110) in contact with the bridge (5) and a body (92, 112) fixed to a fixed part (13) of a frame (2) of the lifting device (1), the body (92, 112) forming a chamber (94, 114 ) in which the rod (90, 110) moves. The axle comprises a hydraulic circuit (15) interconnecting the chambers (92, 112) of the left (9) and right (11) cylinders, in which a fluid is present at a given pressure, making it possible to press the rods (90 , 110) of the left cylinder (9) and of the right cylinder (11) against the axle (5), and at least one solenoid valve (150, 152) on a branch (15A) of the hydraulic circuit (15) connected to the chamber ( 94) of the left cylinder (9), and at least one solenoid valve (154, 156) on a branch (15B) of the hydraulic circuit (15) connected to the chamber (114) of the right cylinder (11), each of these solenoid valves ( 150, 152, 154, 156) can be positioned in an open position, in which the fluid can flow freely, and a closed position, in which the fluid is trapped in the chamber (94, 114) of the cylinder (9, 11) corresponding. Each of the chambers (94, 114) of the left cylinder (9) and of the right cylinder (11) has a pressure sensor (23, 25) adapted to measure the pressure of the fluid in each of the chambers (94, 114). Control means (21) are provided to detect a pressure in one of the chambers (94, 114) greater than a first threshold, and / or a differential between the pressures in each of the chambers (94, 114) greater than one. second threshold, so as to detect the blocking in the closed position of a solenoid valve (150, 152, 154, 156), and to trigger a securing procedure. Figure for abstract: 1
    公开号:FR3100240A1
    申请号:FR1909665
    申请日:2019-09-03
    公开日:2021-03-05
    发明作者:Alexandre Simon；Rémy COGNET
    申请人:Haulotte Group SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an oscillating axle for a lifting device, a lifting device comprising such an axle, as well as a method of controlling such a lifting device.
    [0002] Lifting devices such as aerial work platforms can be equipped with oscillating axles, in particular described in EP 1 414 733 or CN 104528609, making it possible to maintain contact with the ground on uneven terrain in order to preserve the stability of the machine. These oscillating axles include a bridge on which are mounted a wheel at each end, and jacks connecting the vehicle frame and the bridge. The cylinders can be double-acting: in the nacelle displacement configuration with the lifting structure lowered, the translation of the cylinder is free in both directions, and the axle oscillates freely; in the elevation configuration, the position of the cylinders is locked and the axle is locked.
    [0003] The jacks can also be of the single-acting type, which allows additional management compared to double-acting jacks (locking / unlocking one or the other of the jacks and no longer both at the same time). In high platform translation mode, it thus becomes possible, in the event of an unfavorable change in the chassis tilt, to allow the oscillation of the axle only in the stabilizing direction for the chassis (return to the 0 ° tilt position). This mode blocks the oscillation in the aggravating direction and ensures the permanent contact of the four wheels of the machine with the ground. The benefits are a much better adaptability of the machine to variations in terrain as well as a significant reduction in the chassis counterweight since the four wheels maintain contact with the ground at all times.
    [0004] The jacks are blocked by trapping the hydraulic fluid in the jack control circuit by means of solenoid valves controlled by a machine control unit. In the event of an undetected failure of one of these solenoid valves, a cylinder may remain stuck in the ground travel configuration, causing a wheel to lose contact with the ground. In a lifting phase, the machine risks overturning if the load on the platform or the machine's center of gravity moves towards the wheel not resting on the ground.
    [0005] It is these drawbacks that the invention intends to remedy by proposing a new oscillating axle for detecting malfunctions potentially dangerous for the stability of the lifting device.
    [0006] To this end, the invention relates to an oscillating axle for a lifting device, this axle comprising:
    [0007] an axle bridge at the ends of which are mounted two ground links;
    [0008] an axis of oscillation;
    [0009] a left cylinder and a right cylinder, each cylinder having a rod in contact with the bridge and a body fixed to a fixed part of a frame of the lifting device, the body forming a chamber in which the rod moves,
    [0010] a hydraulic circuit interconnecting the chambers of the left and right cylinders, in which a fluid is present at a given pressure, making it possible to press the rods of the left cylinder and of the right cylinder against the bridge;
    [0011] at least one solenoid valve on a branch of the hydraulic circuit connected to the chamber of the left cylinder, and at least one solenoid valve on a branch of the hydraulic circuit connected to the chamber of the right cylinder, each of these solenoid valves being able to be positioned in an open position, in in which the fluid can flow freely, and a closed position, in which the fluid is trapped in the chamber of the corresponding cylinder.
    [0012] This axle is characterized in that each of the chambers of the left cylinder and of the right cylinder comprises a pressure sensor suitable for measuring the pressure of the fluid in each of the chambers, and in that control means are provided for detecting a pressure in the one of the chambers greater than a first threshold, and / or a differential between the pressures in each of the chambers greater than a second threshold, so as to detect the blocking in the closed position of a solenoid valve, and to trigger a securing procedure.
    [0013] Thanks to the invention, a failure of a solenoid valve blocking a jack in position is detected and makes it possible to initiate a securing procedure, and to prevent the lifting device from being in an unstable situation during an operation. lifting.
    [0014] According to advantageous but not mandatory aspects of the invention, such an oscillating axle may incorporate one or more of the following characteristics, taken in any technically permissible combination:
    [0015] - The control means are configured to send an alert signal to an operator or around the lifting device in the event that one of the pressure thresholds is exceeded.
    [0016] - The control means are configured to inhibit certain functions of the lifting device.
    [0017] - The pressures in the cylinder chambers are detected during a rolling phase of the lifting device and prior to a lifting phase of the lifting device.
    [0018] The invention also relates to a lifting device comprising at least one oscillating axle as mentioned above.
    [0019] The invention also relates to a method for controlling a lifting device comprising at least one oscillating axle, this oscillating axle comprising:
    [0020] an axle bridge with a wheel at each of its ends,
    [0021] an axis of oscillation,
    [0022] a left cylinder and a right cylinder; each of the left and right cylinders having a rod in contact with the bridge and a body fixed to a frame of the lifting device, the body forming a chamber in which the rod moves;
    [0023] a hydraulic circuit interconnecting the chambers of the left and right cylinders, in which a fluid is present at a given pressure, making it possible to press the rods of the left cylinder and of the right cylinder against the bridge;
    [0024] at least one solenoid valve on a branch of the hydraulic circuit connected to the chamber of the left cylinder, and at least one solenoid valve on a branch of the hydraulic circuit connected to the chamber of the right cylinder, each of these solenoid valves being able to be positioned in an open position, in in which the fluid can flow freely, and a closed position, in which the fluid is trapped in the chamber of the corresponding cylinder.
    [0025] This method comprises a step a) consisting in measuring the pressure of the fluid in each of the chambers of the left cylinder and of the right cylinder, a step b) consisting in determining whether the pressure in one of the chambers is greater than a first threshold, and / or if a differential between the pressures in each of the chambers is greater than a second threshold, signaling the blocking in the closed position of a solenoid valve, and c) to trigger a safety procedure in the event of one of the step b).
    [0026] According to advantageous but not mandatory aspects of the invention, such a control method may incorporate one or more of the following characteristics, taken in any technically admissible combination:
    [0027] - Steps a) and b) are carried out during a rolling phase of the lifting device and prior to a lifting phase.
    [0028] - In step c), the securing procedure consists at least of: issuing an alert signal to an operator or around the lifting device, or inhibiting certain functions of the lifting device.
    [0029] The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an oscillating axle, of a lifting device and of a control method in accordance with its principle. , made by way of non-limiting example with reference to the accompanying drawings in which:
    [0030] - Figure 1 is a schematic view of an oscillating axle according to the invention;
    [0031] - FIG. 2 is a schematic view of the oscillating axle of FIG. 1, in a configuration for driving on uneven ground;
    [0032] - Figure 3 is a schematic view of the oscillating axle of Figure 1, in a failed configuration.
    [0033] Figures 1 to 3 show a lifting device 1, such as a lifting platform, comprising a lower part comprising a frame 2 and connecting members to the ground, and a lifting structure not shown, supporting a platform also not shown. The lifting structure may be of the type comprising telescopic and articulated sections, or else of the "scissor" type.
    [0034] In a conventional example, the lower part comprises four connecting members to the ground formed by wheels 7. The chassis 2 comprises a fixed part 13 and at least one oscillating axle, one of which is shown in FIG. 1 with the reference 3. The wheels 7 are mounted two by two on the axles. The fixed part 13 is fixed relative to a vertical axis Z1 of the lifting device 1.
    [0035] The oscillating axle 3 comprises a bridge 5 having, at each of its ends, a wheel 7. The bridge 5 is a mechanical structure supporting the wheels 7, which includes a transmission shaft 50 rotating the wheels 7, and which is also capable of modifying the orientation of the wheels 7 as a function of a steering instruction of the machine 1.
    [0036] The oscillating axle 3 is movable in rotation around an axis X3 carried by an oscillation shaft 52 located at the center of the bridge 5. The axis X3 is perpendicular to the vertical axis of the vehicle 1 and perpendicular to a central axis Y5 of the bridge 5. When the bridge 5 oscillates with respect to the fixed part 13, the axis Y5 pivots around the axis X3, as indicated by the arrows R1.
    [0037] The oscillating axle 3 has two jacks, respectively a left jack 9 and a right jack 11, the function of which is to control the oscillation of the bridge 5 and to guarantee the support of the wheels 7 on a ground S.
    [0038] Each of the jacks 9 and 11 has a rod 90 and 110 in contact with the bridge 5 and a body 92 and 112 fixed on the fixed part 13 of the frame 2. Each of the bodies 92 and 112 forms a chamber 94 and 114 in which moves the rod 90 or 110.
    [0039] The oscillating axle 3 comprises a hydraulic circuit 15 equipped with a filter 158 and a source 162 of pressurized fluid. The fluid from the circuit 15 is maintained at a constant pressure by means of a pressure reducer 160 upstream of the branches 15A and 15B. The oil at constant pressure, called booster, feeds the chambers 94 and 114 of the left cylinder 9 and of the right cylinder 11 and maintains the rods 90 and 110 in support on the bridge 5.
    [0040] The hydraulic circuit 15 comprises at least one solenoid valve 150 provided on a first branch 15A of the hydraulic circuit 15 connected to the chamber 94 of the left cylinder 9, and at least one solenoid valve 154 provided on a second branch 15B of the hydraulic circuit 15 connected to the chamber 114 of the right cylinder 11. Each of these solenoid valves 150 and 154 can be positioned in an open position (figure 2), in which the fluid can flow freely, and a closed position (figure 1), in which the fluid is trapped in the chamber 94 or 114 of the corresponding cylinder 9 or 11.
    [0041] In FIG. 1, the solenoid valves 150 and 154 are in the closed position: the fluid can only enter the chambers 94 and 114 but cannot leave them. In FIG. 2, the solenoid valves 150 and 154 are in the open position: the fluid can freely enter or leave the chambers 94 and 114. The jacks 9 and 11 are single-acting.
    [0042] According to an optional aspect, the branches 15A and 15B can each comprise an additional solenoid valve 152 or 156, the operation of which is synchronized with that of the solenoid valves 150 and 154. These additional solenoid valves 152 and 156 provide redundancy which increases the safety of the hydraulic circuit 15. .
    [0043] Each of the chambers 94 and 114 of the left cylinder 9 and of the right cylinder 11 comprises a respective pressure sensor 23 and 25 adapted to measure the pressure of the fluid P9 or P11 in each of these chambers 94 and 114, and the oscillating axle 3 comprises control means connected to the pressure sensors 23 and 25. These control means are formed for example by a control unit 21. The control unit 21 is configured to detect whether the pressure P9 or P11 in one of the chambers 94 and 114 is greater than a first threshold P1, and / or if a differential ΔP between the pressures P9 and P11 in each of the chambers 94 and 114 is greater than a second threshold P2. If the pressure P9 or P11 is greater than P1 or if the differential ΔP is greater than P2, this indicates the blocking in the closed position of one of the solenoid valves 150 and 154. In such a case, the control unit 21 is configured for initiate a securing procedure.
    [0044] The control unit 21 is also connected to the solenoid valves 150, 152, 154 and 156 and exercises electrical control of these solenoid valves. The solenoid valves 150, 152, 154 and 156 are by default maintained in the closed position by springs. The electrical control exerted by the control unit 21 consists in supplying them with electric current to bring them into the open position.
    [0045] The oscillating axle 3 also comprises an inclination sensor 17 fixed to the bridge 5 and an inclination sensor 19 fixed to the fixed part 13. The inclinations measured by the sensors 17 and 19 are communicated to the control unit 21 and allow to know the inclination of the bridge 5 with respect to the fixed part 13.
    [0046] The control unit 21 is configured to send an alert signal to an operator or to the surroundings of the hoist 1 in the event that one of the thresholds P1 and P2 is exceeded. For example, the control unit 21 can control a sound system of the lifting device 1 to emit a warning signal in a platform accommodating operators, or else sound systems on a lower part intended for nearby personnel. . The alert signal can also be an error message on a screen.
    [0047] The control unit 21 is also configured to inhibit certain functions of the lifting device 1. For example, the control unit 21 is connected to a general controller, not shown, of the lifting device and can transmit control signals. reduction of the attainable displacement speed or else signals to reduce the displacement amplitude of certain sections of the lifting structure, or even totally inhibit the elevation.
    [0048] The oscillating axle 3, and by extension the hoist 1, operate as follows.
    [0049] In a first locked configuration shown in Figure 1, the solenoid valves 150, 152, 154 and 156 are not powered. The solenoid valves are therefore in the closed position, the fluid therefore cannot escape from the chambers 94 and 114. The jacks 9 and 11 are therefore blocked, as indicated by the double arrows F1 crossed out in FIG. 1, and the oscillating axle 3 is therefore locked.
    [0050] The boost pressure is used in the hydraulic circuit 15 to keep the cylinders 9 and 11 resting on the bridge 5. The solenoid valves are always passing in the direction of the supply to the cylinders 9 and 11, whatever their state (supplied or not).
    [0051] If lifting device 1 moves on the ground with axle 3 locked, angle sensors 17 (axle) and 19 (chassis) do not change relative to each other or always in the same way.
    [0052] This locked configuration is suitable for parking or for the lifting phases of the lifting structure.
    [0053] In a second "semi-locked" configuration, it is possible to allow the oscillation of the axle only in the stabilizing direction for the chassis (return to the 0 ° tilt position). The control unit 21 is thus able to separately control the solenoid valves 150/152 and 154/156 according to the data returned by the inclination sensors 17 and 19. The solenoid valves can then be closed to block one of the cylinders 9 or 11 so that the incline cannot be increased.
    [0054] In a third unlocked configuration shown in Figure 2, the solenoid valves are electrically powered and therefore open. The fluid can freely enter and leave the chambers 94 and 114: the cylinders 9 and 11 are free in translation, as indicated by the double arrows F2 in FIG. 2. The oscillating axle 3 is therefore unlocked, which means that the axle follows the irregularities of the ground, for example a rock R causes an inclination of the bridge 5 with respect to the fixed part 13.
    [0055] When traveling on the ground with the axle unlocked, the measurements of tilt sensors 17 and 19 change relative to each other.
    [0056] The two chambers 94 and 114 are connected together at the same pressure. The sensors 23 and 25 indicate identical pressures P9 and P11 close to that used to force-feed the cylinders 9 and 11.
    [0057] In this configuration, the pressures P9 and P11 are analyzed by the control unit 21, for example during a rolling phase of the lifting device 1 and prior to an elevation of the lifting structure.
    [0058] In FIG. 3, a malfunction occurs in the unlocked configuration. The solenoid valves are normally energized and in the open position. However, the solenoid valve 152 remained stuck in the closed position (power supply fault or drawer remaining blocked when, for example, too strong a torque is applied when mounting the solenoid valve in its cavity).
    [0059] The fluid is then trapped in the chamber 94, and the cylinder 9 therefore remains blocked while the lifting device 1 is potentially on uneven ground, or else returns to regular ground after having encountered an irregularity. Axle 3 can only oscillate in one direction, which risks causing one of the wheels 7 to lose contact with the ground. In the case of Figure 3, the orientation of the bridge 5 relative to the ground would require a clockwise rotation so that the right wheel can again contact the ground. However, the cylinder 9 is blocked in the direction of retraction, as indicated by the crossed arrow F3 upwards. This rotation cannot take place and the right wheel remains elevated, generating a loss of contact with the ground. The jack 9 can only extend, according to the arrow F4 downwards, which would aggravate the imbalance. If hoist 1 were to stop at this time and begin a lifting phase, a danger of destabilization and overturning would arise.
    [0060] In this case of failure, the pressure sensors 23 and 25 indicate different pressures P9 and P11 during the displacement phase. The sensor 23 will in particular measure a pressure P9 greater than the booster pressure normally measured, because the fluid trapped in the chamber 94 can no longer escape and the pressure increases under the effect of the force exerted by the bridge 5 on the rod 90 to make it enter chamber 94. The failure is therefore detected either by the pressure P9 greater than the first threshold P1, or by exceeding the second threshold P2 by the pressure differential ΔP. The pressure threshold P1 can be, by way of example, equal to 25 bar, and the pressure differential threshold P2 can be, by way of example, equal to 15 bar. The pressure threshold P1 can be dependent on the boost pressure. More generally, the pressure threshold P1 is necessarily greater than the boost pressure, for example set at the boost pressure + 10 bar.
    [0061] The control unit 21 can also measure the time during which the crossing of the threshold occurs. For example if the exceeding of the threshold does not exceed a duration of 25 ms, the exceeding may not be taken into account.
    [0062] This detection of a failure makes it possible to ensure the correct operation of the oscillating axle 3 during the displacement phase prior to a lifting phase. If an anomaly is detected during the movement phase, lifting on wheels is prohibited and a fault is reported to the operator as well as in the machine diagnostic. Thus, the failure is detected and reported before it can lead to dangerous consequences.
    权利要求:
    Claims (8)
    [0001]
    Oscillating axle (3) for a lifting device (1), this axle comprising: an axle bridge (5) at the ends of which are mounted two ground connection members (7); an axis of oscillation (X3); a left cylinder (9) and a right cylinder (11), each cylinder (9, 11) having a rod (90, 110) in contact with the bridge (5) and a body (92, 112) fixed on a fixed part (13) of a frame (2) of the lifting device (1), the body (92, 112) forming a chamber (94, 114) in which the rod (90, 110) moves, a hydraulic circuit (15) interconnecting the chambers (92, 112) of the left (9) and right (11) cylinders, in which a fluid is present at a given pressure, making it possible to press the rods (90, 110) of the left cylinder (9) and the right cylinder (11) against the axle (5); at least one solenoid valve (150, 152) on a branch (15A) of the hydraulic circuit (15) connected to the chamber (94) of the left cylinder (9), and at least one solenoid valve (154, 156) on a branch (15B ) of the hydraulic circuit (15) connected to the chamber (114) of the right cylinder (11), each of these solenoid valves (150, 152, 154, 156) being able to be positioned in an open position, in which the fluid can circulate freely, and a closed position, in which the fluid is trapped in the chamber (94, 114) of the corresponding cylinder (9, 11), characterized in that each of the chambers (94, 114) of the left cylinder (9) and of the right cylinder (11) comprises a pressure sensor (23, 25) adapted to measure the pressure (P9, P11) of the fluid in each of the chambers (94, 114), and in that control means (21) are provided to detect a pressure in one of the chambers (94, 114) greater than a first threshold (P1), and / or a differential ( ΔP) between the pressures in each of the chambers (94, 114) greater than a second threshold (P2), so as to detect the blocking in the closed position of a solenoid valve (150, 152, 154, 156), and to trigger a security procedure.
    [0002]
    Oscillating axle according to Claim 1, characterized in that the control means (21) are configured to emit a warning signal to an operator or to the surroundings of the lifting device (1) in the event of exceeding one of the pressure thresholds (P1, P2).
    [0003]
    Oscillating axle according to one of the preceding claims, characterized in that the control means (21) are configured to inhibit certain functions of the lifting device (1).
    [0004]
    Oscillating axle according to one of the preceding claims, characterized in that the pressures in the chambers (94, 114) of the jacks (9, 11) are detected during a running phase of the lifting device (1) and prior to a lifting phase of the lifting device (1).
    [0005]
    Lifting device (1) comprising at least one oscillating axle (3) according to one of the preceding claims.
    [0006]
    Method of controlling a lifting device (1) comprising at least one oscillating axle (3), this oscillating axle (3) comprising: an axle bridge (5) having a wheel (7) at each of its ends, an oscillation axis (X3), a left cylinder (9) and a right cylinder (11); each of the left (9) and right (11) cylinders having a rod (90, 110) in contact with the bridge (5) and a body (92, 112) fixed on a frame (2) of the lifting device ( 1), the body (92, 112) forming a chamber (94, 114) in which the rod (90, 110) moves; a hydraulic circuit (15) interconnecting the chambers (94, 114) of the left (9) and right (11) cylinders, in which a fluid is present at a given pressure, making it possible to press the rods (90, 110) of the left cylinder (9) and the right cylinder (11) against the axle (5); at least one solenoid valve (150, 152) on a branch (15A) of the hydraulic circuit (15) connected to the chamber (94) of the left cylinder (9), and at least one solenoid valve (154, 156) on a branch (15B ) of the hydraulic circuit (15) connected to the chamber (114) of the right cylinder (11), each of these solenoid valves (150, 152, 154, 156) being able to be positioned in an open position, in which the fluid can circulate freely, and a closed position, in which the fluid is trapped in the chamber of the corresponding jack (9, 11), characterized in that the method comprises a step a) consisting in measuring the pressure of the fluid (P9, P11) in each of the chambers (94, 114) of the left cylinder (9) and of the right cylinder (11), a step b) consisting in determining whether the pressure in one of the chambers (94, 114) is greater than a first threshold (P1), and / or whether a differential (ΔP) between the pressures in each of the chambers (94, 114) is greater to a second threshold, signaling the blocking in the closed position of a solenoid valve (150, 152, 154, 156), and c) to trigger a securing procedure in the event of one of the cases of step b) occurring) .
    [0007]
    Method according to claim 6, characterized in that steps a) and b) are carried out during a rolling phase of the lifting device (1) and prior to a lifting phase.
    [0008]
    Method according to one of Claims 6 and 7, characterized in that in step c), the securing procedure consists at least in: transmitting an alert signal to an operator or in the vicinity of the lifting device (1), or inhibiting certain functions of the lifting device (1).
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3792213A1|2021-03-17|Oscillating axle for a lifting machine, lifting machine comprising such an axle and control method
    EP1879827B1|2011-07-27|Sling device for a piece with force compensation and hoisting system comprising the same
    EP2552776B1|2014-05-07|Method of protecting an aircraft landing gear while the aircraft is being towed, and pin for coupling a towing bar to an orientable lower part of a landing gear
    EP1982850A1|2008-10-22|Device and method for monitoring the pressure of a vehicle tire using an inclinometer
    CA2545784C|2013-02-12|Heavy vehicle
    EP2635518B1|2015-05-06|System for controlling a stabilising leg, stabilisation device, and vehicle including a stabilisation device
    FR2876974A1|2006-04-28|Farm trailer, has blocking unit to allow free pivoting of wheels of axle system when trailer is moved forwards, along non-rectilinear trajectory and at speed lower than preset speed
    FR2908119A1|2008-05-09|Aerial lift for lifting operator/object, has sensors and magnet generating signal representing range of relative position between parts movable with respect to one another based on mast extension and comparator verifying signals coherence
    FR2967011A1|2012-05-11|MOWER-BRUSHCUTTER WITH HYDRAULIC CYLINDERS WITH ELECTRONIC MANAGEMENT
    EP0490798B1|1996-03-06|Crane, especially for handling
    FR2590525A1|1987-05-29|Device for improving the power-transmitting adhesion of a tandem axle to a single drive bogie
    FR2695925A1|1994-03-25|Method and device for preventing a crane or an emergency lift vehicle from overturning.
    FR3031071A1|2016-07-01|PENDULUM VEHICLE WITH MEANS FOR LOCKING THE INCLINATION.
    FR2639596A1|1990-06-01|Vehicle which can be reversed on a guide track
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    EP3226389B1|2020-01-15|Railway vehicle motor and method for mounting the motor
    FR2467169A1|1981-04-17|Tower crane with permanent balancing - has base supports with monitors to measure side loads and control counter-balance weight
    FR2686836A1|1993-08-06|ANTI-DEVICE DEVICE FOR A WHEEL TRAIN OF A MOTOR VEHICLE.
    EP3912950A1|2021-11-24|System for managing working modes of a mobile crane on a site
    EP3915929A1|2021-12-01|Anti-collision management system for a mobile crane on a site
    EP3292071B1|2019-03-06|Method and device for monitoring a support for a trolley comprising a stabilising means
    FR2750971A1|1998-01-16|Mechanical handler with safety system preventing accidental tipping over
    FR2890906A1|2007-03-23|Motor vehicle axle anti-roll system has braces connecting two torsion bars with gap between and detector for transverse movements of body
    FR2706371A1|1994-12-23|High speed civil engineering machinery.
    FR3105202A1|2021-06-25|Scissor lift and method for determining the stability of such a platform
    同族专利:
    公开号 | 公开日
    AU2020223779A1|2021-03-18|
    US20210061046A1|2021-03-04|
    EP3792213A1|2021-03-17|
    CN112441529A|2021-03-05|
    CA3091594A1|2021-03-03|
    FR3100240B1|2021-09-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0890462A1|1997-07-08|1999-01-13|Kabushiki Kaisha Toyoda Jidoshokki Seisakusho|Axle tilt control apparatus for industrial vehicles|
    EP1414733A1|2001-08-07|2004-05-06|JLG Industries, Inc.|Multipurpose machine|
    CN104528609A|2014-12-28|2015-04-22|浙江鼎力机械股份有限公司|Bridge type operation platform|
    US11173766B1|2017-09-07|2021-11-16|Apple Inc.|Suspension system with locking structure|
    US11179991B1|2019-09-23|2021-11-23|Apple Inc.|Suspension systems|
    法律状态:
    2020-08-12| PLFP| Fee payment|Year of fee payment: 2 |
    2021-03-05| PLSC| Search report ready|Effective date: 20210305 |
    2021-08-11| PLFP| Fee payment|Year of fee payment: 3 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1909665A|FR3100240B1|2019-09-03|2019-09-03|Oscillating axle for a lifting device, lifting device comprising such an axle and method of controlling|
    FR1909665|2019-09-03|FR1909665A| FR3100240B1|2019-09-03|2019-09-03|Oscillating axle for a lifting device, lifting device comprising such an axle and method of controlling|
    AU2020223779A| AU2020223779A1|2019-09-03|2020-08-28|Oscillating axle for a lifting device, lifting device comprising such an axle and control method|
    CA3091594A| CA3091594A1|2019-09-03|2020-08-31|Oscillating axle for a lifting appliance that has such an axle, and control procedure|
    US17/009,217| US20210061046A1|2019-09-03|2020-09-01|Oscillating axle for a lifting device, lifting device comprising such an axle and control method|
    EP20194183.8A| EP3792213A1|2019-09-03|2020-09-02|Oscillating axle for a lifting machine, lifting machine comprising such an axle and control method|
    CN202010915528.7A| CN112441529A|2019-09-03|2020-09-03|Oscillating shaft for a lifting device, lifting device comprising such a shaft and control method|
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