EP1555238A2 - Chariot avec propulsion - Google Patents

Chariot avec propulsion Download PDF

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Publication number
EP1555238A2
EP1555238A2 EP04028399A EP04028399A EP1555238A2 EP 1555238 A2 EP1555238 A2 EP 1555238A2 EP 04028399 A EP04028399 A EP 04028399A EP 04028399 A EP04028399 A EP 04028399A EP 1555238 A2 EP1555238 A2 EP 1555238A2
Authority
EP
European Patent Office
Prior art keywords
drive wheel
wheel
spring
drive
load
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
Application number
EP04028399A
Other languages
German (de)
English (en)
Other versions
EP1555238B1 (fr
EP1555238A3 (fr
Inventor
Marcel Krenzin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jungheinrich AG
Original Assignee
Jungheinrich AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jungheinrich AG filed Critical Jungheinrich AG
Publication of EP1555238A2 publication Critical patent/EP1555238A2/fr
Publication of EP1555238A3 publication Critical patent/EP1555238A3/fr
Application granted granted Critical
Publication of EP1555238B1 publication Critical patent/EP1555238B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66F9/07586—Suspension or mounting of wheels on chassis

Definitions

  • the invention relates to an industrial truck with drive according to the preamble of claim 1 or 2.
  • tricycle When tricycle are two wheels formed as load wheels of radarmgeSpecen pallet truck or as front wheels of so-called counterbalance trucks. In the back area only a drive wheel is mounted, which also for steering purposes by a vertical Axis is pivotable.
  • a drive wheel In four-wheel vehicles are located at the front and rear End each two wheels or rollers, such as load wheels in the Radarmen, a Drive wheel at the opposite end in the corner and next to a support roller.
  • the drive wheel for steering purposes is pivotable about a vertical axis.
  • the steered drive wheel is located approximately in the middle of the Drive part of the truck, and on both sides of the drive wheel is respectively a support roller freely pivotally mounted about a vertical axis.
  • the basis of all chassis design is the weighting of lateral stability of the vehicle and traction of the drive wheel. If the side stability is in the foreground, then designed you rigid the suspensions of the tilting wheels generating, this leads both in the case of four-wheel vehicles, as well as five-wheel vehicles, to an over-determined wheel-lift situation, which leads to traction problems on the drive wheel.
  • the vertically immovable drive wheel mates with vertically movable side support rollers, which are supported by springs and dampers to the vehicle frame to to avoid a dynamic swing when cornering. This rested now the most of the total drive axle load depending on the previously made Weighting on the drive wheel, the so-called "load-oriented drive wheel". In borderline situations can be controlled by operating parameters a vertical lock or reset the side support rollers in a base position.
  • the drive wheel via an additional spring arrangement with stiff spring characteristic and possibly special damper constant supported on the chassis, which approximate the suspension behavior of an elastic Wheel tire maps while the tires of the drive wheel essentially unyielding is.
  • Industrial trucks with the exception of counterbalanced trucks, which are also in the Are operated outdoors, usually have wheels with polyurethane tires 90-93 Shore A, which is essentially inelastic.
  • Such tires are also provided in the drive wheel according to the invention.
  • the Spring arrangement is designed so that they at maximum load of the truck does not yield more than 2-10 mm.
  • the spring characteristic of a super-elastic tire as it is in itself in connection with industrial trucks is known, placed in the spring assembly and the drive wheel itself equipped with substantially unyielding tires.
  • the Variability of the spring constant of a spring bears in comparison to the wheel tires a great potential of individual voting.
  • suspension-specific damping properties can now be just as individual be realized by a separate damper, which acts on the Antriebsradaufhnatureung.
  • the invention relates to suspension axles with a load-oriented drive wheel If there are other wheels on the axle, there is also the possibility which must now be performed necessarily vertically movable, the desired To transfer damping characteristics by placing dampers on these wheels.
  • the invention is advantageously applicable to a tricycle, but it can be used in the same advantageous manner for a five-wheel drive.
  • a spring damping arrangement may be formed in a conventional manner, e.g. in the shape, that a relatively stiff working characteristic is provided in the supporting direction, while the relaxation characteristic the damper is made flat. This means that under load a high resistance is generated while the extension of a support wheel after the previous retracts relatively without resistance and therefore quickly goes by, so that during the retraction of a support wheel when driving over a survey, the support wheel quickly is returned to the ground when the survey is abandoned.
  • the invention eliminates relevant effects on ground clearance between the floor and lower frame edge. Furthermore, the cost of the frame of the vehicle is reduced, because of this constructive and simpler in terms of its strength can be.
  • the support wheels can also with a hydraulic or pneumatic adjusting cylinder are acted upon in dependence operating parameters, such as pressure in the lifting cylinder, lifting height of the load taken, Inclination of the pallet truck, acceleration or deceleration of the pallet truck, Steering angle of the drive wheel, slip of the drive wheel, etc. the chassis characteristics to change.
  • operating parameters such as pressure in the lifting cylinder, lifting height of the load taken, Inclination of the pallet truck, acceleration or deceleration of the pallet truck, Steering angle of the drive wheel, slip of the drive wheel, etc. the chassis characteristics to change.
  • the invention can also be applied in the same way to four-wheel trolleys.
  • the chassis of a non-illustrated truck is indicated at 10, which has a tricycle landing gear.
  • the front wheels are not shown, but only a drive wheel 12 on the longitudinal axis of the vehicle, that of a motor-gear assembly 14 is driven about a horizontal axis and by means of a vertical Shaft 16 is rotatably mounted about a vertical axis. The latter happens for guidance purposes, as indicated by a double arrow 18.
  • the steering is not shown.
  • the shaft 16 is also limitedly displaceable in the vertical direction and is in a suitable leadership, led here, but this is not shown.
  • a spring assembly 20 is provided between the Chassis 10 and the engine-transmission assembly 14.
  • This spring arrangement is designed so that they at maximum allowable loading of the Truck only yields a few millimeters, for example 3 to 6 mm.
  • the behavior of a superelastic tire is essentially modeled as it is otherwise used for drive wheels of industrial trucks.
  • the drive wheel 12 also has a tire 22, e.g. Made of Vulkollan and extremely has low compliance.
  • a suspension as shown in Fig. 1, can be the same behavior as Achieve an elastic tire without having to take over the disadvantages.
  • a Suspension as shown in Fig. 1, has a high stability and a better steerability of the drive wheel 12 than an elastic tire.
  • a damper 24 in addition to the spring assembly 20, can be to intercept shocks on the drive wheel 12.
  • the characteristic of the damper 24 may be such that the working characteristic is quite steep while the relaxation characteristic is is flat, so that the provision of the drive wheel 12 at a minimal retraction can occur relatively quickly, so that a constant ground contact preserved.
  • a five-wheel chassis for a truck is indicated, in which the chassis 30 is in turn supported solely on the steerable drive wheel 12.
  • the chassis 30 is in turn supported solely on the steerable drive wheel 12.
  • On both sides of the drive wheel 12 are support rollers 32, 34th arranged, which rotate both about a vertical and about a horizontal axis are. This is well known for support rollers.
  • the support rollers 32, 34 supported on the chassis 30 via a spring damping arrangement. Such is about in Fig. 4 indicated.
  • the damper element 40 may be relatively steep Working characteristic are provided to effectively absorb shock or the vehicle Effective stabilization laterally, without having to fear rolling movements. In the opposite direction (relaxation characteristic) moves the damper element 40 against a low resistance, so that the spring 38, the support roller 32 always in Can hold ground contact.
  • FIG. 5 is a hydraulic cylinder 42 between spring 38th and chassis 30.
  • the cylinder 42 is controlled by a pressure source 44th operated, the pressure depending on a number of different parameters may be, for example, the pressure in the lift cylinder of the truck, the lifting height the load taken, the inclination of the truck, the acceleration or Delay of the vehicle, the steering angle of the drive wheel 12, the slip of the Drive wheel 12, etc. This is indicated by the arrows 46 in Fig. 5.
  • a chassis 50 of a truck is indicated with a four-wheel drive, only one drive wheel 12 and one support wheel 34 are shown.
  • the suspension of the Drive wheel 12 corresponds to that according to FIGS. 1 and 3, therefore, are the same parts provided with the same reference numerals.
  • the support roller 34 is via a spring damping arrangement 52 supported on the chassis.
  • the spring damping arrangement has approximately the Effect, as shown by the Fign. 4 and 5 has been described.
  • the support roller 34 is designed in accordance with a load-oriented Antriebsrad réellees.
  • About the Spring 38 is the division of the entire drive axle load on drive wheel 12 and Support wheel 34 controlled. Decisive here is the required Antriebsrad réelle for starting and braking under rated load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
EP04028399A 2004-01-16 2004-12-01 Chariot avec propulsion Active EP1555238B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004002188A DE102004002188A1 (de) 2004-01-16 2004-01-16 Flurförderzeug mit Fahrantrieb und Mitfahrmöglichkeit
DE102004002188 2004-01-16

Publications (3)

Publication Number Publication Date
EP1555238A2 true EP1555238A2 (fr) 2005-07-20
EP1555238A3 EP1555238A3 (fr) 2007-08-22
EP1555238B1 EP1555238B1 (fr) 2010-10-13

Family

ID=34609572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04028399A Active EP1555238B1 (fr) 2004-01-16 2004-12-01 Chariot avec propulsion

Country Status (5)

Country Link
US (1) US20050156391A1 (fr)
EP (1) EP1555238B1 (fr)
CN (1) CN100393607C (fr)
DE (2) DE102004002188A1 (fr)
ES (1) ES2349634T3 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030113B4 (de) * 2004-06-22 2021-03-04 Linde Material Handling Gmbh Hubwagen mit einer höhenverstellbaren Schwenkrolle
DE102008016493B4 (de) 2008-03-31 2022-10-27 Linde Material Handling Gmbh Flurförderzeug, insbesondere Hubwagen
DE102012106626B3 (de) 2012-07-20 2013-09-26 Krauss-Maffei Wegmann Gmbh & Co. Kg Waffenplattform, militärisches Fahrzeug mit einer Waffenplattform und Verfahren zum Betrieb einer Waffenplattform
US9296273B2 (en) 2013-10-14 2016-03-29 Agco Corporation Machine suspension and height adjustment
US9079470B2 (en) * 2013-10-14 2015-07-14 Agco Corporation Vehicle with chassis height adjustment
US10315900B2 (en) * 2014-04-01 2019-06-11 The Raymond Corporation Caster wheel with constant force mechanism
US9593003B2 (en) * 2014-04-01 2017-03-14 The Raymond Corporation Caster wheel with constant force mechanism
US9533863B2 (en) * 2014-10-23 2017-01-03 Jungheinrich Aktiengesellschaft Industrial truck
DE102016207526A1 (de) 2016-05-02 2017-11-02 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Schwingungen
DE102016207523A1 (de) 2016-05-02 2017-11-02 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Querschwingungen
DE102016208205A1 (de) 2016-05-12 2017-11-16 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Schwingungen
DE102016209893A1 (de) 2016-06-06 2017-12-07 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Schwingungen
DE102016211390A1 (de) * 2016-06-24 2017-12-28 Jungheinrich Aktiengesellschaft Flurförderzeug mit Mitteln zur Unterdrückung bzw. Reduzierung von Schwingungen
DE102016211603A1 (de) 2016-06-28 2017-12-28 Jungheinrich Aktiengesellschaft Abstützvorrichtung mit Einrichtung zur Reduzierung von Schwingungen
CN109406077A (zh) * 2018-11-30 2019-03-01 沈阳仪表科学研究院有限公司 波纹管横向刚度测试装置
DE102020205606A1 (de) * 2020-05-04 2021-11-04 Jungheinrich Aktiengesellschaft Flurförderzeug
DE102021114066A1 (de) 2021-05-31 2022-12-01 Jungheinrich Aktiengesellschaft Fahrwerkzylinder für ein Flurförderzeug mit einem gegenüber dem Boden vorgespannten Antriebsrad
CN113371640B (zh) * 2021-08-12 2021-10-26 山东山宇重工机械有限公司 多功能小型液压托盘车

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1431709A1 (de) * 1964-03-24 1968-12-05 Lansing Bagnall Ltd Industrielader
DE3106027A1 (de) * 1981-02-19 1982-09-02 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg "hublader mit einem hoehenausgleichbaren mittelantrieb"
US4431084A (en) * 1981-05-06 1984-02-14 Clark Equipment Company Industrial truck
EP1215164A1 (fr) * 2000-12-15 2002-06-19 Still Gmbh Chariot de manutention avec un essieu moteur suspendu élastiquement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3424475A (en) * 1967-11-15 1969-01-28 Raymond Corp Lift truck suspension system
SE449482B (sv) * 1985-07-08 1987-05-04 Bygg Och Transportekonomie Ab Anordning for okning av bromsformagan hos industritruckar
DE4227954C2 (de) * 1992-08-22 1996-03-14 Jungheinrich Ag Dreirädriges Flurförderzeug
KR100415203B1 (ko) * 2000-01-14 2004-01-16 가부시키가이샤 도요다 지도숏키 산업차량용 서스펜션 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1431709A1 (de) * 1964-03-24 1968-12-05 Lansing Bagnall Ltd Industrielader
DE3106027A1 (de) * 1981-02-19 1982-09-02 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg "hublader mit einem hoehenausgleichbaren mittelantrieb"
US4431084A (en) * 1981-05-06 1984-02-14 Clark Equipment Company Industrial truck
EP1215164A1 (fr) * 2000-12-15 2002-06-19 Still Gmbh Chariot de manutention avec un essieu moteur suspendu élastiquement

Also Published As

Publication number Publication date
EP1555238B1 (fr) 2010-10-13
CN1640806A (zh) 2005-07-20
DE502004011772D1 (de) 2010-11-25
DE102004002188A1 (de) 2005-08-11
EP1555238A3 (fr) 2007-08-22
CN100393607C (zh) 2008-06-11
ES2349634T3 (es) 2011-01-07
US20050156391A1 (en) 2005-07-21

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