EP1614651A2 - Echelle de mesure pour la détection de la hauteur de levage. - Google Patents

Echelle de mesure pour la détection de la hauteur de levage. Download PDF

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Publication number
EP1614651A2
EP1614651A2 EP05014686A EP05014686A EP1614651A2 EP 1614651 A2 EP1614651 A2 EP 1614651A2 EP 05014686 A EP05014686 A EP 05014686A EP 05014686 A EP05014686 A EP 05014686A EP 1614651 A2 EP1614651 A2 EP 1614651A2
Authority
EP
European Patent Office
Prior art keywords
scale
sensor
load
bearing component
bearing
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
EP05014686A
Other languages
German (de)
English (en)
Other versions
EP1614651B1 (fr
EP1614651A3 (fr
Inventor
Robert Hämmerl
Carsten Schöttke
Klaus SCHRÖDER
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 EP1614651A2 publication Critical patent/EP1614651A2/fr
Publication of EP1614651A3 publication Critical patent/EP1614651A3/fr
Application granted granted Critical
Publication of EP1614651B1 publication Critical patent/EP1614651B1/fr
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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
    • B66F9/0755—Position control; Position detectors

Definitions

  • the present invention relates to an industrial truck with a first load-bearing component and a second load-bearing component, which are provided for performing a conveying movement relative to each other, wherein for detecting the relative movement between the two load-bearing components on one of the load-bearing components (scale load-bearing component) a sensor scale and at the respective another load-carrying component (sensor load-bearing component) is provided for the purpose of detecting the sensor scale.
  • Such a truck is known from DE 103 14 795 A1.
  • a sensor scale is fastened with screws to the first load-bearing component.
  • a sensor against spring preload for engagement with the sensor scale is movable towards and away from the scale. This ensures that the sensor has a defined distance from the scale, and can follow about load-related deformations of the load-bearing components.
  • a disadvantage of the known industrial truck is that the sensor scale is to be fastened with screws to the load-bearing component. This increases the assembly effort in the manufacture of the truck.
  • this object is achieved by an industrial truck of the type mentioned, in which the sensor scale is integrally formed on the scale load-bearing component such that a portion of the scale load-bearing component itself is the sensor scale.
  • the sensor scale is formed by the material of the scale load bearing member directly thereon. An assembly of additional scale carriers is thereby eliminated. The scale load bearing component thus forms even the sensor scale.
  • An etching method for forming recesses for a sensor scale on the associated load-bearing component is additionally conceivable or alternative to the abovementioned methods.
  • the sensor scale is usually designed in relief and has at least one substantially in the direction of the relative movement between the two load-bearing components extending sequence of depressions and elevations.
  • This relief-like design of the sensor scale in the scale load-bearing component which is usually made of metal, can be used as a sensor sensor, an inductive, capacitive or optical sensor.
  • the sensor which is movable towards and away from the sensor scale, is accommodated in a sleeve surrounding it, which slides on the sensor scale.
  • the sensor scale By sliding on the area of the scale to be detected by the sensor can pollute by abrasion of the sleeve preferably formed of plastic, the sensor scale and thus the detection accuracy of the sensor are affected.
  • the sensor scale is an incremental scale, which is like a ladder in the direction of relative movement of the load-bearing components to each other, so that in a relative movement downright material of the sleeve surrounding the sensor is removed from the "rungs" of the ladder-like scale.
  • the only screwed-on sensor scale can be damaged by sliding on him sleeve.
  • a generic industrial truck may be designed in such a way that the sensor is accommodated in a sliding shoe, wherein the sliding shoe is movable in a direction towards the scale load-bearing component and movable away therefrom on the sensor load-bearing component is and slides in a relative movement of scale load-bearing member and sensor load bearing member on a sensor scale different sliding surface of the scale load bearing member.
  • the shoe may be biased to rest against the sliding surface.
  • the sensor device described is preferably used for detecting the relative movement during conveying movements. This is particularly easy if a load-bearing component is a stand of a mast or an additional lift and if the other load-bearing component is a lifting frame of the mast or a fork carriage of the additional stroke.
  • a load-bearing component may be a side frame and the other load-bearing component may be a stand associated therewith.
  • the sensor is preferably arranged on the load-carrying component which is less mobile with respect to the truck frame to a small extent, since this considerably simplifies the wiring of the sensor. Since the sensor scale is usually passive, i. neither supplied with energy nor emits signals, this can be arranged without detriment to the load carrying component moved with respect to the truck frame to a greater extent. Therefore, the stand may be the sensor load bearing member and the lifting frame, side frame or fork carriage may be the scale load bearing member.
  • a fastening formation 16 is provided for fastening a sensor arrangement generally designated 20 in FIG.
  • the mounting formation 16 opposite and pointing to this is on the stator 14, a sensor scale 22 is provided.
  • the sensor scale 22 is formed by impressing depressions 22a, which are arranged consecutively in the direction of the double arrow V at the same distance. It is an incremental sensor scale 22.
  • the impressions of the recesses 22a in a side surface 14a of the lifting frame 14 can be done in a very simple manner by rolling on the surface 14a in the direction of the double arrow V tool.
  • On the circumference of the tool projections of hardened metal can be arranged distributed in the circumferential direction, which then press when rolling the tool on the surface 14 a in the material of the lifting frame 14.
  • the procedure corresponds to the knurling of a surface.
  • the sensor scale 22 By directly integrally forming the sensor scale 22 with the lifting frame 14, a very robust sensor scale is obtained, which is capable of providing sufficient accuracy.
  • the process of attaching and adjusting a separate sensor scale on the lifting frame 14 is eliminated. It is only necessary to ensure that the sensor scale 22 is formed in a defined position and location on the lifting frame 14, which is not a problem with today numerically controlled processing machines.
  • the application of the sensor scale on the lifting frame 14 represents only a further manufacturing step, which is parallelized with other manufacturing steps for the production of the lifting frame 14 and thus executable without significant loss of time.
  • a multi-track, absolute sensor scale can be provided, such as when different, in direction of the double arrow V parallel parallel scale tracks represent a binary number with multiple digits of different bit valence. Each track can then be assigned a bit weighting. With n tracks, 2 "numbers from 0 to 2 n-1 can be represented. If the step size of an elevation and a depression of the least significant track a, then with n tracks the distance a • 2 n can be coded.
  • the sensor arrangement 20 comprises a detector 24, which is fastened to a sliding shoe 26.
  • a data line 28 transmits the detection signals of the detector 24 to a controller or computer unit not shown in FIG. 2.
  • the sliding shoe 26 is movably received in a sleeve 30 of a sensor flange 32 in the direction of the double arrow W and is pressed by a helical compression spring 34 toward the sensor scale 22 toward the surface 14a of the lifting frame 14.
  • a helical compression spring 34 toward the sensor scale 22 toward the surface 14a of the lifting frame 14.
  • the sliding block comprises a sliding section 36 on the left in FIG. 2 and a sliding section 38 on the right in FIG. 2. Between these sliding sections 36 and 38, the sensor scale 22 extends without any contact with the sliding shoe material. In the case of a relative movement of the lifting frame 14 and the stator 12, the sensor arrangement 20, in particular the detector 24, slides over the sensor scale 22 without contact.
  • the left sliding section 36 slides on a sliding surface section 40 located on the left of the sensor scale 22, while the right sliding section 38 slides on a sliding surface section 42 located on the right of the sensor scale 22.
  • the Gleitzinabête 40 and 42 are indicated by dashed lines in Fig. 2.
  • the sliding surface portions 40 and 42 together form a sliding surface 44.
EP05014686A 2004-07-08 2005-07-06 Echelle de mesure pour la détection de la hauteur de levage. Active EP1614651B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004033170A DE102004033170A1 (de) 2004-07-08 2004-07-08 Maßverkörperung für Hubhöhensensierung

Publications (3)

Publication Number Publication Date
EP1614651A2 true EP1614651A2 (fr) 2006-01-11
EP1614651A3 EP1614651A3 (fr) 2007-05-09
EP1614651B1 EP1614651B1 (fr) 2010-01-13

Family

ID=35044526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014686A Active EP1614651B1 (fr) 2004-07-08 2005-07-06 Echelle de mesure pour la détection de la hauteur de levage.

Country Status (4)

Country Link
US (1) US7266904B2 (fr)
EP (1) EP1614651B1 (fr)
CN (1) CN100455981C (fr)
DE (2) DE102004033170A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2135837A1 (fr) 2008-06-19 2009-12-23 Jungheinrich Aktiengesellschaft Chariot de manutention doté d'une mesure optique de la hauteur de levage

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041391A1 (de) 2004-08-26 2006-03-02 Jungheinrich Aktiengesellschaft Messeinrichtung zum inkrementalen Messen von Positionen, Stellwegen oder Stellwinkeln und mit einer derartigen Messeinrichtung ausgestattetes Flurförderzeug
DE102010039471B4 (de) * 2010-08-18 2014-02-13 Robert Bosch Gmbh Verfahren und Vorrichtung zur Bestimmung einer Hubhöhe einer Arbeitsmaschine
DE102010044656A1 (de) 2010-09-08 2012-03-08 Jungheinrich Aktiengesellschaft Flurförderzeug mit einem Hubhöhensensor
CN102020222A (zh) * 2010-12-21 2011-04-20 东南大学 一种液压升降装置
FR2975089B1 (fr) * 2011-05-10 2013-04-26 Manitou Bf Dispositif de mesure de bras telescopique de manutention
EP2527288B1 (fr) 2011-05-27 2013-08-21 Atlet AB Chariot élévateur à fourche doté d'un contrôle automatique de la hauteur de l'élévation
CN102506784B (zh) * 2011-11-24 2013-12-18 三一集团有限公司 滑动配合机构及测量装置、测量方法、集装箱堆高机
CN103112801B (zh) * 2013-02-06 2015-03-18 浙江诺力机械股份有限公司 一种检测叉车货叉高度的装置、方法及系统
US9440827B2 (en) * 2014-03-20 2016-09-13 Jungheinrich Aktiengesellschaft Lift mast height sensor for an industrial truck
CN112461341B (zh) * 2020-11-13 2022-04-05 深圳市西城微科电子有限公司 基于全桥电路的电子称及介质

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE10314795A1 (de) 2002-04-11 2003-10-30 Linde Ag Messeinrichtung zur berührungslosen Messung von Positionen, Wegen und/oder Winkeln sowie daraus ableitbaren Größen

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US3924729A (en) * 1974-10-08 1975-12-09 Conscale Ab Belt conveyor weighing system
DK140887B (da) * 1975-04-30 1979-12-03 Islef & Hagen As Styresystem til selektiv indstilling af et forskydeligt organ.
DE2602746B2 (de) * 1975-07-22 1977-09-01 Gudel, Alfred, Langenthai (Schweiz) Verfahren zur winkelmessung an raumflaechen sowie vorrichtung zur ausfuehrung des verfahrens
US4421186A (en) * 1980-08-25 1983-12-20 Weigh-Tronix, Inc. Fork lift scale
CH654810A5 (en) 1982-04-13 1986-03-14 Owl Ag Method for controlling an element used to transport goods and device for implementing the method
US5586620A (en) * 1995-05-12 1996-12-24 Crown Equipment Corporation Remote viewing apparatus for fork lift trucks
JPH08324717A (ja) * 1995-06-05 1996-12-10 Mitsubishi Heavy Ind Ltd スタッカクレーンのラック棚番地検出方法
JPH09132399A (ja) 1995-11-08 1997-05-20 Toyota Autom Loom Works Ltd フォ−クリフトの揚高検出装置
EP0881472B1 (fr) * 1997-05-28 2005-07-27 Sony Precision Technology Inc. Support pour une échelle magnétique
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JPH11292498A (ja) 1998-04-02 1999-10-26 Toyota Autom Loom Works Ltd ピッキングフォークリフト
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Patent Citations (1)

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DE10314795A1 (de) 2002-04-11 2003-10-30 Linde Ag Messeinrichtung zur berührungslosen Messung von Positionen, Wegen und/oder Winkeln sowie daraus ableitbaren Größen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2135837A1 (fr) 2008-06-19 2009-12-23 Jungheinrich Aktiengesellschaft Chariot de manutention doté d'une mesure optique de la hauteur de levage
US8600628B2 (en) 2008-06-19 2013-12-03 Jungheinrich Aktiengesellschaft Industrial truck with optical lifting height measurement
US9511985B2 (en) 2008-06-19 2016-12-06 Jungheinrich Aktiengesellschaft Industrial truck with optical lifting height measurement

Also Published As

Publication number Publication date
CN100455981C (zh) 2009-01-28
DE102004033170A1 (de) 2006-02-02
CN1719189A (zh) 2006-01-11
US7266904B2 (en) 2007-09-11
EP1614651B1 (fr) 2010-01-13
US20060005415A1 (en) 2006-01-12
EP1614651A3 (fr) 2007-05-09
DE502005008855D1 (de) 2010-03-04

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