EP1911717A2 - Vorrichtung zur Anzeige der Position eines Arms für Kräne - Google Patents

Vorrichtung zur Anzeige der Position eines Arms für Kräne Download PDF

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Publication number
EP1911717A2
EP1911717A2 EP07356125A EP07356125A EP1911717A2 EP 1911717 A2 EP1911717 A2 EP 1911717A2 EP 07356125 A EP07356125 A EP 07356125A EP 07356125 A EP07356125 A EP 07356125A EP 1911717 A2 EP1911717 A2 EP 1911717A2
Authority
EP
European Patent Office
Prior art keywords
crane
teeth
boom
pinion
rotation
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
EP07356125A
Other languages
English (en)
French (fr)
Other versions
EP1911717A3 (de
EP1911717B1 (de
Inventor
Cédric Juraszek
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.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
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 Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP1911717A2 publication Critical patent/EP1911717A2/de
Publication of EP1911717A3 publication Critical patent/EP1911717A3/de
Application granted granted Critical
Publication of EP1911717B1 publication Critical patent/EP1911717B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/04—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track
    • B66C15/045—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/94—Safety gear for limiting slewing movements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/128—Braking systems

Definitions

  • the present invention relates generally to the technical field of cranes. More particularly, this invention relates to a device for indicating the position in space, that is, of the orientation, of the boom of a tower crane or a luffing jib crane.
  • a tower crane taken here as an example has, in a generally known manner, a distributing boom which, thanks to a motorized rotation mechanism, is orientable about a vertical axis, so that this boom pivots in a horizontal plane.
  • the boom can thus be pivotally mounted at the top of a fixed crane mast, in which case the rotation mechanism is at the top of the mast.
  • the boom is integral in rotation with the mast, the rotation mechanism being in this case at the base of the mast of the crane.
  • an angular sensor which may be a potentiometer or an encoder or any other equivalent sensor, analog or digital type.
  • Such an angular sensor is rotated by means of a pinion, which meshes with a ring gear which belongs to the rotation mechanism which equips the crane.
  • the angular sensor such as potentiometer is itself rotated by a shaft rotating at an angular speed multiple of that of the arrow in the reduction ratio.
  • the error is by no means negligible, and it may even rise to several degrees, after a small number of turns of the boom of the crane.
  • the aim of the invention is to avoid this drawback and it is therefore intended to eliminate the systematic error due to the reduction ratio, in order to obtain in all cases a direct and exact indication of the position of the arrow, whatever the number of turns made by this arrow, and especially whatever the number of teeth of the crown.
  • the object of the invention is to obtain a position indicator which provides an indication of rotation identical to the actual rotation of the boom, however without resorting to the mechanical device explained above (under the designation "first solution").
  • the subject of the invention is an indicator of the position in space, that is to say of the orientation, of the boom of a crane, in particular one by one or a luffing jib crane, the indicator being associated with a rotation mechanism of the crane and comprising an angular sensor driven in rotation by means of a pinion having teeth in a fixed number (d), which gear meshes with a crown tooth having a predetermined number of teeth (D) and belonging to the rotation mechanism of the crane, so that the rotation of the angular sensor is representative of the rotation of the boom of the crane, the indicator also comprising a computer which, from the number of revolutions measured by the angular sensor, determines the number of revolutions made by the arrow, this position indicator being essentially characterized by the fact that the aforementioned pinion has teeth whose number (d) is equal to a power of two (2 n ), so that the reduction ratio (R) , defined as the quotient of the number of teeth (D) of the crown by the number of teeth (d
  • the choice for the pinion of a number of teeth which is a power of two (2 n ) allows to obtain a reduction ratio which is a number with decimals in a finite number, relatively small, and this report can be introduced, without being truncated, in the memory of the processing computer.
  • the division of the measured number of turns of the sensor by the reduction ratio provides the exact rotation value of the boom of the crane. More precisely, a precisely determined (and not approximately evaluated) number of sensor turns corresponds here to a complete revolution of the boom of the crane. The "scaling" of the information provided by the sensor is thus performed without error.
  • the number of teeth of the pinion will preferably be chosen equal to sixteen.
  • the computer part is preferably integrated in said encoder, the encoder thus providing a signal which directly represents the angular position of the arrow.
  • FIG. 1 is a very partial and simplified view of a tower crane (taken here as an example of application), showing the region of its rotation mechanism with a fixed pivot 2, for example secured to the top of the mast of the crane, and a movable pivot 3 secured to the boom of this crane, the boom being thus made steerable.
  • the rotation mechanism comprises a ring gear 4, fixed by screws 5 on the fixed pivot 2, and motorized means (not shown) which are carried by the mobile pivot 3 and which, by cooperating with the ring gear 4, control the rotation of the boom, this in a manner known per se.
  • the ring 4 has gear teeth 6 in relatively large numbers, of the order of one hundred, the number of teeth 6 of the ring 4 being designated D.
  • the indicator of the position of the arrow is designated generally by the reference 7. It comprises an angular sensor or rotation sensor 8 such as a multiturn absolute encoder, which is held by a support 9 fixed on the mobile pivot 3 and which is thus placed on the side of the ring gear 4.
  • the inner rotating part of the angular sensor 8 is integral in rotation with a pinion 10 of vertical axis A, which meshes with the ring gear 4.
  • the pinion 10 has teeth 11 whose the number is equal to a power of two (2 n ), this number being more particularly equal to sixteen (or two power four).
  • the reduction ratio R is a number which always has a limited number of decimals.
  • This ratio R can thus be introduced exactly into the computer 12 associated with the sensor 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
EP20070356125 2006-10-12 2007-09-21 Vorrichtung zur Anzeige der Position eines Arms für Kräne Expired - Fee Related EP1911717B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608935A FR2907109B1 (fr) 2006-10-12 2006-10-12 Indicateur de position de fleche pour grue

Publications (3)

Publication Number Publication Date
EP1911717A2 true EP1911717A2 (de) 2008-04-16
EP1911717A3 EP1911717A3 (de) 2009-12-02
EP1911717B1 EP1911717B1 (de) 2011-03-16

Family

ID=38050085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070356125 Expired - Fee Related EP1911717B1 (de) 2006-10-12 2007-09-21 Vorrichtung zur Anzeige der Position eines Arms für Kräne

Country Status (4)

Country Link
EP (1) EP1911717B1 (de)
DE (1) DE602007013158D1 (de)
ES (1) ES2362802T3 (de)
FR (1) FR2907109B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102927957A (zh) * 2012-11-20 2013-02-13 北方重工集团有限公司 一种取料臂俯仰角度检测装置
US8836323B2 (en) 2010-12-13 2014-09-16 Caterpillar Inc. System and method for determining slue position
JP2015160676A (ja) * 2014-02-26 2015-09-07 日立住友重機械建機クレーン株式会社 旋回式作業機械の旋回角度検出装置
EP2423151B1 (de) 2010-08-24 2015-11-11 Manitowoc Crane Group France SAS Radialspielausgleichende Drehwinkelgeberanordnung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2931466B1 (fr) 2008-05-22 2011-01-07 Manitowoc Crane Group France Procede de commande du mouvement d'orientation de la partie tournante d'une grue a tour

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB833061A (en) * 1956-06-27 1960-04-21 D Inv S Et De Brevets S E I B Indicating device, more particularly for fluid measuring and distributing devices
US3760401A (en) * 1971-04-05 1973-09-18 H Tallon Crane operated rotation monitor
FR2670195A1 (fr) * 1990-12-06 1992-06-12 Euro Montage Sa Dispositif anti-collision pour grues a fleche distributrice.
JPH0674751A (ja) * 1992-08-26 1994-03-18 Yanmar Diesel Engine Co Ltd 建設機械の旋回角検出機構
US5448148A (en) * 1992-06-11 1995-09-05 Caterpillar Inc. Apparatus for positioning an excavator housing
EP0945556A1 (de) * 1998-03-26 1999-09-29 Bauer Spezialtiefbau GmbH Drehkranzbremse
DE10151179A1 (de) * 2000-10-17 2002-04-25 Harmonic Drive Systems Absolutsensor
US20030088989A1 (en) * 2001-11-15 2003-05-15 Hisashi Nishikawa Rotational angle detector and rotational angle detecting method
WO2004048899A2 (en) * 2002-11-25 2004-06-10 Matsushita Electric Industrial Co., Ltd. Device and method of detecting rotation angle
US20060015227A1 (en) * 2004-07-13 2006-01-19 Stefan Knoll Steering angle sensor assembly including reduction gear and logic module

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB833061A (en) * 1956-06-27 1960-04-21 D Inv S Et De Brevets S E I B Indicating device, more particularly for fluid measuring and distributing devices
US3760401A (en) * 1971-04-05 1973-09-18 H Tallon Crane operated rotation monitor
FR2670195A1 (fr) * 1990-12-06 1992-06-12 Euro Montage Sa Dispositif anti-collision pour grues a fleche distributrice.
US5448148A (en) * 1992-06-11 1995-09-05 Caterpillar Inc. Apparatus for positioning an excavator housing
JPH0674751A (ja) * 1992-08-26 1994-03-18 Yanmar Diesel Engine Co Ltd 建設機械の旋回角検出機構
EP0945556A1 (de) * 1998-03-26 1999-09-29 Bauer Spezialtiefbau GmbH Drehkranzbremse
DE10151179A1 (de) * 2000-10-17 2002-04-25 Harmonic Drive Systems Absolutsensor
US20030088989A1 (en) * 2001-11-15 2003-05-15 Hisashi Nishikawa Rotational angle detector and rotational angle detecting method
WO2004048899A2 (en) * 2002-11-25 2004-06-10 Matsushita Electric Industrial Co., Ltd. Device and method of detecting rotation angle
US20060015227A1 (en) * 2004-07-13 2006-01-19 Stefan Knoll Steering angle sensor assembly including reduction gear and logic module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2423151B1 (de) 2010-08-24 2015-11-11 Manitowoc Crane Group France SAS Radialspielausgleichende Drehwinkelgeberanordnung
US8836323B2 (en) 2010-12-13 2014-09-16 Caterpillar Inc. System and method for determining slue position
CN102927957A (zh) * 2012-11-20 2013-02-13 北方重工集团有限公司 一种取料臂俯仰角度检测装置
CN102927957B (zh) * 2012-11-20 2015-12-23 北方重工集团有限公司 一种取料臂俯仰角度检测装置
JP2015160676A (ja) * 2014-02-26 2015-09-07 日立住友重機械建機クレーン株式会社 旋回式作業機械の旋回角度検出装置

Also Published As

Publication number Publication date
EP1911717A3 (de) 2009-12-02
ES2362802T3 (es) 2011-07-13
FR2907109A1 (fr) 2008-04-18
FR2907109B1 (fr) 2008-12-19
EP1911717B1 (de) 2011-03-16
DE602007013158D1 (de) 2011-04-28

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