EP2477930A1 - Lastenfahrzeug mit höhenverstellbarer hubeinrichtung - Google Patents
Lastenfahrzeug mit höhenverstellbarer hubeinrichtungInfo
- Publication number
- EP2477930A1 EP2477930A1 EP10732971A EP10732971A EP2477930A1 EP 2477930 A1 EP2477930 A1 EP 2477930A1 EP 10732971 A EP10732971 A EP 10732971A EP 10732971 A EP10732971 A EP 10732971A EP 2477930 A1 EP2477930 A1 EP 2477930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting device
- sensor
- cargo vehicle
- vehicle according
- acceleration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 51
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
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
- 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
- B66F9/07559—Stabilizing means
-
- 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
- B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
Definitions
- the invention relates to a cargo vehicle with a height-adjustable lifting device, in particular a material handling vehicle such as a forklift, according to the preamble of claim 1.
- DE 103 04 658 A1 a designed as a forklift truck is described, which is equipped with a device for controlling the driving stability in order to reduce the risk of tipping over.
- Forklifts generally have the problem that, due to the short wheelbase, the narrow track width and the relatively high center of gravity when the load is raised, there is an increased risk of tipping in the event of a forward braking action and at high cornering speeds.
- the device for controlling driving stability disclosed in DE 103 04 658 A1 comprises a sensor system for determining vehicle state variables and parameters such as accelerations, recorded load and lifting height and a control device in which, based on the measured quantities, limit values for permissible accelerations are determined and measures for Adhering to the limits are taken.
- the measures for increasing the stability are a braking or acceleration process, the change in the lifting height, an intervention in the steering or an intervention in the angular position of the lifting device carrying the mast.
- the risk of tipping is also influenced by dynamic influences, for example a swinging of the lifting fork, which is detected in an insufficient manner via the control or regulation in the vehicle. Disclosure of the invention
- the object of the invention is to further reduce the danger of tipping in a freight vehicle with a height-adjustable lifting device.
- the invention relates to cargo vehicles with a height-adjustable
- Lifting device which includes in particular trackless forklifts such as forklifts or reachstackers, but also tractors with front loader, wheel loader or the like.
- the invention is also applicable to track-bound floor conveyor, as far as they are equipped with a height-adjustable Hubeinrich- device.
- the load vehicle is in addition to the height-adjustable lifting device for receiving a load to be transported equipped with an acceleration sensor that allows the measurement of acceleration in at least one direction of movement. Furthermore, sensors are provided for determining the recorded load and for determining the lifting height of the lifting device.
- Control signals can be generated via a regulating or control device in the freight vehicle, which signals can be supplied to the setting of at least one vehicle aggregate, upon the actuation of which the driving state of the freight vehicle is influenced.
- this unit is a drive motor for driving the cargo vehicle and / or the braking device, where appropriate, the influence of the steering device in the vehicle and the lifting height of the lifting device and optionally the pivoting angle of an adjustable mast for receiving the lifting device come into consideration ,
- the actuating signals are generated at least as a function of the measured acceleration.
- the control signals can also be dependent on the determined recorded load and the determined lifting height.
- the acceleration sensor is arranged on the lifting device and is adjustable in height together with the lifting device. This embodiment has the advantage that accelerations immediately adjacent to the lifted load can be determined, so that dynamic state changes such as vibrations can be determined, to which the lifted load is exposed and which lead to considerable forces acting on the vehicle. Such dynamic processes are recorded without delay, without phase shift and without amplitude damping directly at the place of origin and can be processed in the control unit.
- Prior art in which the acceleration sensor system is arranged in the vehicle body-mounted, is a more sensitive instrumentation for registering accelerations are available to which the load is exposed.
- vibrations in the lifting device can not be determined or only in a strongly damped and phase-delayed form.
- the device according to the invention earlier than in the prior art can be responded to an imminent danger situation, whereby the risk of tipping is further reduced. Additional dangerous situations can be detected, in particular when driving over obstacles, and suitable measures for preventing or reducing the risk of tipping are taken.
- the acceleration sensor system in or on the lifting device is preferably arranged so that the position of the acceleration sensor system is close to the center of gravity of the load usually to be absorbed. It is also possible, however, an arrangement adjacent to the highest point of the lifting device, which is subjected to the greatest deflections based on the roadway. In principle, however, an arrangement of the acceleration sensors in the region of the forks, to which the load to be lifted is to be set up, is also possible.
- the acceleration sensor system comprises an acceleration sensor, via which at least one acceleration in a vehicle direction can be measured, in particular the longitudinal acceleration.
- the acceleration sensor system is embodied at least as a 2D acceleration sensor system which comprises sensors for measuring the longitudinal acceleration and the transverse acceleration.
- a 3D sensor system is provided which in addition to the sensors for measuring the longitudinal and lateral acceleration also includes a sensor for measuring the vertical acceleration.
- the advantage of the 3D acceleration sensor system is that the vertical acceleration sensor together with the longitudinal acceleration sensor makes it possible to detect tilting of the vehicle forwards or backwards with greater accuracy.
- the lateral acceleration can be used to influence cornering.
- the load vehicle is equipped with a sensor for detecting the recorded load, which is embodied, for example, as a pressure sensor in a lifting cylinder adjusting the lifting device.
- the load can be determined, which are arranged for example between the lifting cylinder and the lifting device.
- the weight of the load is an essential information, since the risk of tipping is significantly influenced by the weight of the load.
- the load vehicle is further equipped with a sensor for determining the current lifting height of the lifting device, as well as the lifting height is a significant factor influencing the risk of tipping.
- the lifting height is determined, for example, by means of a barometric sensor which is arranged on the lifting device and, in particular, is a component of the sensor system arranged on the lifting device, which also comprises the acceleration sensor system.
- the pressure sensor in the lifting cylinder over which the lifting device is to be adjusted, however, is conveniently located at the foot of the lifting device.
- the lifting height of the lifting device can optionally also be determined via a sensor device with which a measurement of the vertical travel distance of the lifting device is possible.
- a sensor device with which a measurement of the vertical travel distance of the lifting device is possible.
- an arrangement of the sensor on both the vehicle body and on the lifting device comes into consideration.
- the lifting device is preferably located on a mast connected to the vehicle body, which is held pivotably relative to the vehicle body in particular about a transverse axis.
- the pivoting represents a further degree of freedom in the cargo vehicle, which influences the driving stability and is expediently determined via a further sensor.
- different drive motors come into consideration. It is possible, for example, an embodiment as an internal combustion engine or as an electric motor, wherein the electric drive via both one or more acting on the vehicle axles drive motors and over
- Wheel hub motors is possible. About the drive motors is both an adjustment of the drive torque and a motor braking torque into consideration. Additionally or alternatively, however, braking torques can also be set via the braking device of the cargo vehicle, in particular via the wheel brakes. Furthermore, a regulation of the height of the lifting device and the pivot angle of the mast into consideration, which carries the lifting device.
- the steering device of the cargo vehicle can be influenced. For example, in an embodiment of the steering device as a hydrostatic steering an automatic engagement in the steering system into consideration, as well as in active steering systems that allow the specification of a superposition steering angle. In passive steering systems, in which no overlay steering angle can be generated, an engagement in the servo actuator is possible. Further advantages and expedient embodiments can be found in the further claims, the description of the figures and the drawing, in which a forklift with lifted load is shown.
- the forklift 1 shown in the figure has a drive motor 2 arranged on the bodywork for driving one or both axles of the vehicle.
- a lifting device 3 which is designed as a lifting fork and is held vertically adjustable on a mast 4.
- the mast 4 can be pivoted relative to the vehicle body between different positions by a pivot angle ⁇ , wherein the
- Swivel axis in the transverse direction adjacent to the bottom of the vehicle runs.
- the lifting device 3 is held by a suitable adjusting device height adjustable on the mast 4, in particular via a hydraulically actuated lifting cylinder, and can be adjusted between arbitrary positions between the maximum lowered and the maximum raised position on the mast 4 the.
- the adjustment of the swivel angle ⁇ takes place independently of the height adjustment of the lifting device 3.
- the forklift 1 is equipped with a sensor system for detecting various state and characteristics of the vehicle.
- the sensor system comprises a 3D acceleration sensor system 5, which is arranged at the upper region of the lifting device 3 and which, relative to the vehicle body, executes the same vertical positioning movement and the pivoting movement about the pivoting angle ⁇ as the lifting device 3.
- the acceleration sensor system 5 By means of the acceleration sensor system 5, the longitudinal acceleration , the lateral acceleration and the vertical acceleration in the lifting device 3 are measured.
- the senor includes a pressure sensor 6 which is arranged in the lifting cylinder, via which the lifting device 3 in the vertical direction on the mast 4 is adjustable.
- the pressure sensor determines the pressure in the hydraulic medium, which adjusts the lift cylinder. From the measured pressure can be concluded that the weight of the load 7, which is located on the lifting device 3.
- the sensor system comprises a sensor for determining the current lifting height of the lifting device, for which, for example, a design as a barometric sensor comes into question, which is arranged as well as the acceleration sensor 5 on the lifting device.
- a sensor for determining the current lifting height of the lifting device for which, for example, a design as a barometric sensor comes into question, which is arranged as well as the acceleration sensor 5 on the lifting device.
- the barometric for determining the current lifting height of the lifting device, for which, for example, a design as a barometric sensor comes into question, which is arranged as well as the acceleration sensor 5 on the lifting device.
- the barometric for determining the current lifting height of the lifting device
- Displacement sensors which are either located at the foot of the mast 4 and determine the current lifting height of the lifting device 3 based on the foot of the mast or are firmly connected to the lifting device and measure the distance of the lifting device from the foot of the mast.
- the sensor for determining the lifting height is expediently also in a common
- control or control unit 8 which receives the sensory data and evaluates and generates on the basis of the data actuating signals via which the current driving state of
- Vehicle is influenced.
- the control signals of the control unit In particular, the drive motor 2, the braking device in the vehicle, the steering device, the lifting height of the lifting device 3 and the pivot angle ⁇ of the mast 4 are set automatically.
- the automatic adjustment of the actuators in the vehicle in particular influence on the driving stability is taken.
- the vehicle center of gravity 10 which is composed of the vehicle center of gravity 10 and the load center 1 1, wherein in addition to the respective mass of the load 7, the current lifting height and the pivot angle ⁇ for the determination of the total center of gravity 9 are observed.
- accelerations, in particular vibrations in the lifting device 3 can be measured directly at the point of origin, resulting in a faster response via a control of the actuators in the vehicle and on the other a more precise Setting in border areas of stability allows.
- Both the longitudinal dynamics and the lateral dynamics of the vehicle, in particular the risk of tipping about the transverse axis or the longitudinal axis of the vehicle, can be taken into account.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Civil Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
- Operation Control Of Excavators (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009029467A DE102009029467A1 (de) | 2009-09-15 | 2009-09-15 | Lastenfahrzeug mit höhenverstellbarer Hubeinrichtung |
PCT/EP2010/060197 WO2011032744A1 (de) | 2009-09-15 | 2010-07-15 | Lastenfahrzeug mit höhenverstellbarer hubeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2477930A1 true EP2477930A1 (de) | 2012-07-25 |
EP2477930B1 EP2477930B1 (de) | 2016-12-21 |
Family
ID=42813208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10732971.6A Not-in-force EP2477930B1 (de) | 2009-09-15 | 2010-07-15 | Lastenfahrzeug mit höhenverstellbarer hubeinrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120239262A1 (de) |
EP (1) | EP2477930B1 (de) |
JP (1) | JP2013503802A (de) |
CN (1) | CN102482066B (de) |
DE (1) | DE102009029467A1 (de) |
WO (1) | WO2011032744A1 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011100913A1 (de) * | 2011-04-29 | 2012-10-31 | Jungheinrich Aktiengesellschaft | Flurförderzeug mit höhenverstellbarem Lasttragmittel |
CN102556908B (zh) * | 2012-01-17 | 2015-07-08 | 浙江中力机械有限公司 | 电动叉车安全监控系统 |
CN102602849B (zh) * | 2012-03-16 | 2014-07-23 | 张家港市金昌龙机械设备有限公司 | 一种液压推车 |
CN102910543B (zh) * | 2012-08-08 | 2014-10-15 | 三一集团有限公司 | 一种起重机及其防前倾翻保护方法和装置 |
US20140088837A1 (en) * | 2012-09-21 | 2014-03-27 | Erric L. Heitmann | Vehicle With Solicited Carriage Descent |
DE102013105299A1 (de) * | 2013-05-23 | 2014-11-27 | Kion Warehouse Systems Gmbh | Flurförderzeug, insbesondere Kommissionierflurförderzeug mit einem anhebbaren und absenkbaren Fahrerstand |
CN103350977B (zh) * | 2013-07-11 | 2015-06-10 | 浙江诺力机械股份有限公司 | 一种存取货时自动提升货叉至正确存取货高度的方法及装置 |
CN106604886B (zh) | 2014-09-15 | 2019-06-18 | 克朗设备公司 | 具有光学货物感测结构的叉车 |
JP6365345B2 (ja) * | 2015-02-27 | 2018-08-01 | 株式会社豊田自動織機 | 産業車両 |
EP3127858B1 (de) | 2015-08-03 | 2018-08-01 | The Raymond Corporation | Schwingungsdämpfung für ein materialhandhabungsfahrzeug |
DE102015118472A1 (de) * | 2015-10-29 | 2017-05-04 | Jungheinrich Aktiengesellschaft | Flurförderzeug mit einem Lastteil und einem Antriebsteil |
CN106444385B (zh) * | 2016-11-28 | 2019-04-02 | 龙合智能装备制造有限公司 | 属具自适应智能化调节方法及装置 |
DE102016124506A1 (de) * | 2016-12-15 | 2018-06-21 | Jungheinrich Aktiengesellschaft | Flurförderzeug mit einer Steuereinheit zur Regelung der Bewegung einer Last sowie ein entsprechendes Verfahren |
CN109941925B (zh) * | 2017-12-21 | 2020-07-10 | 比亚迪股份有限公司 | 叉车 |
JP7070041B2 (ja) * | 2018-04-26 | 2022-05-18 | 中西金属工業株式会社 | フォークリフト、及びフォークリフトのフォークに積載した荷の重心高測定方法 |
CN108502814A (zh) * | 2018-05-22 | 2018-09-07 | 汇专科技集团股份有限公司 | Agv小车搬运和举升方法及系统 |
US11807508B2 (en) * | 2018-08-31 | 2023-11-07 | Hyster-Yale Group, Inc. | Dynamic stability determination system for lift trucks |
WO2020059236A1 (ja) * | 2018-09-19 | 2020-03-26 | 日本電産株式会社 | 物品の管理システム |
JP7215948B2 (ja) * | 2019-03-28 | 2023-01-31 | 三菱重工業株式会社 | フォークリフト |
CN112061718B (zh) * | 2019-06-10 | 2022-03-15 | 李志鹏 | 一种智能托盘的控制方法及智能托盘 |
CN111498751B (zh) * | 2020-04-27 | 2021-06-11 | 广东电网有限责任公司 | 一种卸货平台 |
US11066023B1 (en) | 2021-04-09 | 2021-07-20 | INVISIONit LLC | Camera system for particulate material trailer |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2884995B2 (ja) * | 1993-06-21 | 1999-04-19 | 神鋼電機株式会社 | 荷役制御装置 |
JPH115419A (ja) * | 1997-06-18 | 1999-01-12 | Toyota Autom Loom Works Ltd | 産業車両の車体揺動制御装置 |
JPH11199197A (ja) * | 1997-11-14 | 1999-07-27 | Toyota Autom Loom Works Ltd | フォークリフトの後輪車軸揺動制御装置 |
DE10304658A1 (de) * | 2003-02-05 | 2004-08-19 | Bosch Rexroth Ag | Flurförderfahrzeug |
US6785597B1 (en) * | 2003-02-07 | 2004-08-31 | Wiggins Lift Co., Inc. | Hydraulic stabilizer system and process for monitoring load conditions |
DE102005012004B4 (de) * | 2004-04-07 | 2020-09-24 | Linde Material Handling Gmbh | Flurförderzeug mit erhöhter statischer/quasistatischer und dynamischer Kippstabilität |
GB2412902B (en) * | 2004-04-07 | 2008-04-09 | Linde Ag | Industrial truck having increased static or quasi-static tipping stability |
JP2006162364A (ja) * | 2004-12-06 | 2006-06-22 | Yokogawa Electric Corp | 位置計測システム |
US8793054B2 (en) * | 2005-06-22 | 2014-07-29 | Volvo Construction Equipment Ab | System and a method of controlling the tilting of a loadcarrying implement of a movable work machine, and a movable work machine |
JP2007039213A (ja) * | 2005-08-04 | 2007-02-15 | Tmp:Kk | 運搬機器の安全操作装置、安全操作方法及び安全操作管理システム |
CN101322120B (zh) * | 2005-12-02 | 2010-12-29 | 通用汽车环球科技运作公司 | 车辆中相对重心高度的确定 |
JP2007276962A (ja) * | 2006-04-07 | 2007-10-25 | Murata Mach Ltd | 搬送装置 |
JP2007290817A (ja) * | 2006-04-25 | 2007-11-08 | Nippon Sharyo Seizo Kaisha Ltd | 荷崩れ防止装置 |
JP4142700B2 (ja) * | 2006-07-24 | 2008-09-03 | 学校法人慶應義塾 | 荷すくい装置 |
DE102007015488A1 (de) * | 2007-03-30 | 2008-10-02 | Still Wagner Gmbh | Schwingungskompensation am Hubgerüst eines Flurförderzeugs |
DE102007020182A1 (de) * | 2007-04-28 | 2008-10-30 | Robert Bosch Gmbh | Verfahren zur Messung und Regelung der Höhe eines beweglichen Bauteils einer Arbeitsmaschine und Arbeitsmaschine mit einem Basisbauteil und einem beweglichen Bauteil |
US8140228B2 (en) * | 2009-03-27 | 2012-03-20 | The Raymond Corporation | System and method for dynamically maintaining the stability of a material handling vehicle having a vertical lift |
-
2009
- 2009-09-15 DE DE102009029467A patent/DE102009029467A1/de not_active Withdrawn
-
2010
- 2010-07-15 JP JP2012528286A patent/JP2013503802A/ja active Pending
- 2010-07-15 US US13/496,076 patent/US20120239262A1/en not_active Abandoned
- 2010-07-15 WO PCT/EP2010/060197 patent/WO2011032744A1/de active Application Filing
- 2010-07-15 EP EP10732971.6A patent/EP2477930B1/de not_active Not-in-force
- 2010-07-15 CN CN201080040901.3A patent/CN102482066B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2011032744A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102009029467A1 (de) | 2011-03-24 |
US20120239262A1 (en) | 2012-09-20 |
CN102482066B (zh) | 2014-11-26 |
JP2013503802A (ja) | 2013-02-04 |
EP2477930B1 (de) | 2016-12-21 |
CN102482066A (zh) | 2012-05-30 |
WO2011032744A1 (de) | 2011-03-24 |
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