EP1134181A2 - Dispositif de rotation des unités de travail dans des chariots élévateurs ou analogues - Google Patents

Dispositif de rotation des unités de travail dans des chariots élévateurs ou analogues Download PDF

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Publication number
EP1134181A2
EP1134181A2 EP01106014A EP01106014A EP1134181A2 EP 1134181 A2 EP1134181 A2 EP 1134181A2 EP 01106014 A EP01106014 A EP 01106014A EP 01106014 A EP01106014 A EP 01106014A EP 1134181 A2 EP1134181 A2 EP 1134181A2
Authority
EP
European Patent Office
Prior art keywords
crown
rotation
working units
lift trucks
lift
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.)
Withdrawn
Application number
EP01106014A
Other languages
German (de)
English (en)
Other versions
EP1134181A3 (fr
Inventor
Giuseppe Roncari
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.)
Cascade Italia SRL
Original Assignee
Cascade Italia SRL
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 Cascade Italia SRL filed Critical Cascade Italia SRL
Publication of EP1134181A2 publication Critical patent/EP1134181A2/fr
Publication of EP1134181A3 publication Critical patent/EP1134181A3/fr
Withdrawn legal-status Critical Current

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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
    • B66F9/08—Masts; Guides; Chains
    • B66F9/082—Masts; Guides; Chains inclinable
    • 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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members

Definitions

  • the present invention proposes a device of rotation for working units in lift trucks or the like.
  • the present device acts through an endless screw provided with a crawling crown which is mounted in particular on lift machines such as fork-carrying trucks, tool-carrying trucks or the like.
  • This device of rotation is conceptually new as far as means allowing an angular displacement of the fork-carrying plate are concerned.
  • the present invention allows many advantages referring to the production costs and mounting costs as well as the practical use which becomes safer thanks to a better visibility due to a certain increase in the field of vision.
  • the more typical appliance refers to a front fork-carrying unit or tool-carrying unit or the like.
  • the front fork unit (but it may be another tool unit) is mounted on the front part of the truck through a coupling plate which allows both the support of the forks or other tools and their translation according to movements of mutual moving-off or approaching so as to obtain suitable variations in the distance of the interaxis.
  • the fork unit can obviously be shifted vertically along vertical guides of the truck. It can sometimes be necessary to adjust the angle with a suited turntable in order to rotate the forks on a horizontal axis, for instance in case it is necessary to move ladles and casting "poche" in the foundries.
  • the cast material when the cast material must be poured in the teeming aisle after its transport from the oven, the cast material can flow out of the ladle as the ladle is gradually inclined. The gradual inclination of the ladle is obtained by means of the angular displacement of the fork units of the truck.
  • the conventional system used to allow an angular rotation of the fork units or tool units in lift trucks consists in utilizing a turntable which is mounted on the fork unit.
  • a ball bearing system of rotation is positioned on the turntable.
  • the fork unit is mounted on the ball bearing system.
  • the object of the present invention is to remove the aforesaid inconveniences by utilizing a conceptually new system of rotation which is not based on a use of ball bearings but on a system of crawling rotation which allows to simple the constructive operations as well as to better the operative conditions during the working phases.
  • the present invention proposes in particular a system of rotation to be carried out by utilizing a smaller number of components which in addition can be assembled more simply than the conventional systems. In this way, it is possible to considerably limit the costs of production since the ball bearings are no more necessary.
  • Another advantage consists in a betterment of the operative conditions during the working phases, which betterment is made possible by the possibility of manoeuvre with a widest field of vision than the conventional systems, which is very advantageous.
  • a device of rotation which is mounted on working units in lift trucks or the like and acts through an endless screw with crawling crown, which device is mounted in particular on lift machines such as fork-carrying trucks or the like, characterized in that of comprising a casing which is provided with crawling means on which a counter-casing is mounted for supporting forks or the like so as to form a rotary support for the angular adjustment, on an essentially horizontal axis, of the tool unit of the lift truck.
  • number 1 denotes a device of rotation according to the present invention for working units in lift trucks or the like, which device of rotation acts through an endless screw with crawling crown and is mounted in particular on lift machines such as fork-carrying trucks or the like.
  • the device of rotation 1 consists of a fixed element or casing 2 on the rear side of which there are fixing clamps 2' which are to be coupled with corresponding front clamps 3 which are fixed to the self-moving lift truck.
  • the fixed element or casing 2 includes a hollow seat in which there is provided a crown 4 which represents the rotary part on which an outer fork-carrying unit or other outer tool-carrying unit is coupled, which unit comprises a supporting plate 5.
  • the outside of the crown 4 is provided with a series of teeth 6 which are intercepted by an endless screw 7 with vertical axis.
  • a motor 8 actuates the endless screw 7.
  • the supporting plate 5 and the toothed crown 4 are connected with each other through screws 9, arranged radially.
  • Both the fixed element 2 and the toothed crown 4 and the supporting plate 5 are open in their centre and the openings are large enough so as to allow the operator to effect operations of displacement with the highest precision, which gives rise to remarkable practical advantages.
  • elastic seal rings or o-rings 10 are positioned in the outside and inside of the toothed crown 4.
  • the crown 4 is fixed to the casing by means of screws 12.
  • the system of lubrication of the crown is a crawling-type system in that it is obtained with a fluid and the reducer acts as a bath of lubricant (oil or grease) which is collected from channels 13 and holes, as represented in Figures 9-12.
  • the lubricating fluid flows in helical channels 14 in the inner part of the crown, that is the part interested by the crawling.
  • the helical channels 14 convoy the lubricant between the crown and the support thereof.
  • the angular displacement of the plate 5 and its supported unit is actuated by the motor 8 which rotates the endless screw 7 on provoking the angular displacement of both the toothed crown 4 and the supporting plate 5.
  • the supporting plate in turn rotates the fork unit or other similar tool unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP01106014A 2000-03-14 2001-03-12 Dispositif de rotation des unités de travail dans des chariots élévateurs ou analogues Withdrawn EP1134181A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR000012U 2000-03-14
ITVR20000012 IT251020Y1 (it) 2000-03-14 2000-03-14 Dispositivo di rotazione per gruppi di lavoro di carrelli elevatori osimili.

Publications (2)

Publication Number Publication Date
EP1134181A2 true EP1134181A2 (fr) 2001-09-19
EP1134181A3 EP1134181A3 (fr) 2003-06-25

Family

ID=11461769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106014A Withdrawn EP1134181A3 (fr) 2000-03-14 2001-03-12 Dispositif de rotation des unités de travail dans des chariots élévateurs ou analogues

Country Status (2)

Country Link
EP (1) EP1134181A3 (fr)
IT (1) IT251020Y1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1750035A1 (fr) * 2005-08-03 2007-02-07 Siemens Aktiengesellschaft Actionneur avec une bague de support formée dans le boîtier supportant des efforts radiales d'une roue hélicoidale supportée avec palier dans le boîtier de la transmission de roue hélicoidale
NL1036491C2 (nl) * 2009-01-30 2010-08-02 Griptech B V Rotator voor het roteren van bijvoorbeeld kisten alsmede heftruck voorzien van een dergelijke rotator.
US10975951B2 (en) 2015-09-23 2021-04-13 Nexen Group, Inc. Sealed rotary table

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE418679C (de) * 1925-09-15 Pfauter Fa Hermann Schneckengetriebe
DE1263607B (de) * 1964-06-08 1968-03-14 Valmet Oy Fa Hublader mit Drehsatz am Hubschlitten
US3851539A (en) * 1972-09-07 1974-12-03 F Durand Worm reduction gearing drive
JPS57137745A (en) * 1981-02-20 1982-08-25 Nissan Motor Co Ltd Fixing structure for worm gear used for speedometer
JPS57145800A (en) * 1981-03-04 1982-09-08 Nissan Motor Turning gear for fork of forklift
US4766777A (en) * 1986-06-05 1988-08-30 The United States Of America As Represented By The Secretary Of The Army Interrupted thread lock mechanism for an engine-transmission assembly
US5820270A (en) * 1997-05-23 1998-10-13 Totall Attachments Inc. Slewing turntable bearing
US5957000A (en) * 1998-01-05 1999-09-28 Pecorari; Paul A. Lubricated worm gear driven slewing bearing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE418679C (de) * 1925-09-15 Pfauter Fa Hermann Schneckengetriebe
DE1263607B (de) * 1964-06-08 1968-03-14 Valmet Oy Fa Hublader mit Drehsatz am Hubschlitten
US3851539A (en) * 1972-09-07 1974-12-03 F Durand Worm reduction gearing drive
JPS57137745A (en) * 1981-02-20 1982-08-25 Nissan Motor Co Ltd Fixing structure for worm gear used for speedometer
JPS57145800A (en) * 1981-03-04 1982-09-08 Nissan Motor Turning gear for fork of forklift
US4766777A (en) * 1986-06-05 1988-08-30 The United States Of America As Represented By The Secretary Of The Army Interrupted thread lock mechanism for an engine-transmission assembly
US5820270A (en) * 1997-05-23 1998-10-13 Totall Attachments Inc. Slewing turntable bearing
US5957000A (en) * 1998-01-05 1999-09-28 Pecorari; Paul A. Lubricated worm gear driven slewing bearing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 240 (M-174), 27 November 1982 (1982-11-27) -& JP 57 137745 A (NISSAN JIDOSHA KK), 25 August 1982 (1982-08-25) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1750035A1 (fr) * 2005-08-03 2007-02-07 Siemens Aktiengesellschaft Actionneur avec une bague de support formée dans le boîtier supportant des efforts radiales d'une roue hélicoidale supportée avec palier dans le boîtier de la transmission de roue hélicoidale
WO2007014836A1 (fr) * 2005-08-03 2007-02-08 Siemens Aktiengesellschaft Actionneur comportant une bague d'appui qui est formee dans le carter de protection des engrenages pour supporter radialement la force d'une roue a denture helicoidale montee dans le carter de protection des engrenages
NL1036491C2 (nl) * 2009-01-30 2010-08-02 Griptech B V Rotator voor het roteren van bijvoorbeeld kisten alsmede heftruck voorzien van een dergelijke rotator.
EP2213610A1 (fr) * 2009-01-30 2010-08-04 Griptech B.V. Dispositif rotatif destiné à faire tourner des caisses; chariot de manutention équipé d'un tel dispositif rotatif
US10975951B2 (en) 2015-09-23 2021-04-13 Nexen Group, Inc. Sealed rotary table
US11365796B2 (en) 2015-09-23 2022-06-21 Nexen Group, Inc. Sealed rotary table

Also Published As

Publication number Publication date
EP1134181A3 (fr) 2003-06-25
ITVR20000012U1 (it) 2001-09-14
IT251020Y1 (it) 2003-11-04

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