EP1669317B1 - Device and method for connecting a hoisting mechanism to a tool - Google Patents

Device and method for connecting a hoisting mechanism to a tool Download PDF

Info

Publication number
EP1669317B1
EP1669317B1 EP05077762A EP05077762A EP1669317B1 EP 1669317 B1 EP1669317 B1 EP 1669317B1 EP 05077762 A EP05077762 A EP 05077762A EP 05077762 A EP05077762 A EP 05077762A EP 1669317 B1 EP1669317 B1 EP 1669317B1
Authority
EP
European Patent Office
Prior art keywords
plate
pin
plates
pins
hoisting mechanism
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.)
Not-in-force
Application number
EP05077762A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1669317A1 (en
Inventor
Johannes Gerardus Bleekman
Theodorus Johannes Maria Van Hal
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1669317A1 publication Critical patent/EP1669317A1/en
Application granted granted Critical
Publication of EP1669317B1 publication Critical patent/EP1669317B1/en
Not-in-force 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
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/005—Grab supports, e.g. articulations; Oscillation dampers; Orientation

Definitions

  • the invention relates to a device for connecting a hoisting mechanism to a tool, whereby the hoisting mechanism and the tool are each provided with a plate, which plates can be positioned opposite each other and be interlocked, the first plate being provided with a pin that can be positioned in an opening in the second plate.
  • the device according to the preamble of claim 1 is known from US-A-5.141.386 , which device comprises two identical pins connected to a first plate, which pins can be inserted into openings in a second plate. By using two pins it is rather difficult to align the plates with respect to each other. Furthermore the plates might swivel with respect to each other about an axis extending between the two pins.
  • the object of the invention is to provide a device by means of which a hoisting mechanism can be connected to a tool in a firm and simple manner.
  • the first plate is provided with at least three pins arranged in a circle, whilst the second plate is provided with three openings that register with said pins, whilst one of the plates is provided with a centring pin positioned centrally between the pins on the first plate, which centring pin can be centred in a centring opening in the other plate.
  • the centring of the plates relative to each other can be effected in a simple manner by means of the centring pin.
  • the centring pin is centrally positioned between the pins that are present on the first plate so as to make it easier to position the centring pin in the centring opening and subsequently position the other pins in the openings.
  • the plate provided with the pins may be attached either to the hoisting mechanism or to the tool, and the plate provided with the openings is attached to the tool or to the lifting device, respectively.
  • the centring pin is preferably longer than the other pins, so that the centring pin can be inserted into the centring opening first before the other pins are inserted into the openings.
  • Yet another embodiment of the device according to the invention is characterized in that the centring pin has a conical end.
  • the conical end facilitates the insertion of the centring pin into the centring opening.
  • the pin comprises a widened end on a side remote from the first plate, whilst the opening in the second plate comprises a widened portion that registers with said widened end and a narrower portion that joins said widened portion, wherein the plates can be connected by inserting the pin into the widened portion and subsequently moving the plates relative to each other until the pin is positioned in the narrower portion of the opening, with the widened portion of the pin being positioned on a side of the second plate that faces away from the first plate.
  • the plates are locked in position relative to each other after the pin has been moved into the narrower portion of the opening, so that the pin cannot unintentionally move out of the opening.
  • Figure 1 is a side view of a truck 1 comprising a load platform 2 and a hoisting mechanism 3 mounted on the load platform 2.
  • the hoisting mechanism 3 comprises a number of arms 4, which can be moved and be pivoted relative to each other by means that are known per se, for example hydraulic means, enabling one end of the hoisting mechanism 3 to move and pivot in X-, Y- and Z-direction.
  • Present on the load platform 2 of the truck 1 is a tool in the form of a grab 5.
  • the grab 5 comprises a number of pivotally interconnected arms 6.
  • the end of the hoisting mechanism 3 is provided with a first part 7 of a device 8 according to the invention, which can be connected to a second part 9 of the device 8 according to the invention, which is attached to the grab 5.
  • FIG. 2 shows the device 8 in more detail.
  • the first part 7 comprises a plate 10, which is provided with a centring pin 11 and three pins 12 symmetrically arranged around said centring pin 11.
  • the plate 10 is furthermore provided with a locking mechanism 13 comprising a locking pin 14 that extends parallel to the pins 12 and the centring pin 11.
  • the second part 9 comprises a plate 15, which is attached to the grab 5 by means of spacers 16.
  • the plate 15 is provided with a number of openings 17, 18, 19, which register with the centring pin 11, the pins 12 and the locking pin 14, respectively.
  • the pins 12 comprise a widened portion 20 spaced from the plate 10 and a narrower portion 21 extending between the plate 10 and the widened portion 20.
  • the widened portion 20 has a spherical end on a side remote from the plate 10.
  • the centring pin 11 is longer than the pins 12 and has a conical end 22 on a side remote from the plate 10.
  • the locking mechanism 13 is provided with a sleeve 23, in which the locking pin 14 is movably accommodated. The locking pin 14 can be moved out of or into the sleeve 23 by means of a lever 24 that is pivotally connected to the sleeve 23.
  • the openings 18 in the plate 15 have a widened portion 25, into which the widened portion 20 of the pins 12 can be positioned, and a narrower portion 26 that joins said widened portion 25.
  • the narrower portion 26 is so dimensioned that the narrower portion 21 of the pin 12 can easily move therethrough.
  • the operator of the truck 1 moves the hoisting mechanism 3 by means of the controls present on the truck 1 until the first part 7 that is attached to the end of the hoisting mechanism is positioned opposite the second part 9. Then the first part 7 is moved downwards until the conical end 22 of the centring pin 11 is positioned in the centring opening 17. Because of the conical shape of the end 22, the centring pin 11 can be inserted into the opening 17 without difficulty. Subsequently, the plate 10 is rotated about the centring pin 11 relative to the plate 15 until the widened portions 20 of the pins 12 are positioned opposite the widened portions 25 of the openings 18 and are subsequently inserted into said widened portions 25 by moving the plate 10 in the direction of the plate 15.
  • the plate 10 abuts against the plate 15, the widened portions 20 of the pins 12 have been moved through the widened portions 25 of the openings 18 in their entirety. Then the plate 10 is rotated with respect to the plate 15 by the operator of the hoisting mechanism 3, in such a manner that the narrower portions 21 of the pins 12 are moved into the narrower portions 26 of the openings 18.
  • the plates 10, 15 are now interlocked.
  • the locking pin 14 is inserted into the opening 19 by means of the lever 24 of the locking mechanism 13, so that the plates 10, 15 are locked against movement relative to each other in a simple manner. Undesirable pivoting of the lever 24 can be prevented in a simple manner by means of a locking pin 27.
  • a hydraulic line of the hoisting mechanism may be connected to a hydraulic plant present on the grab 5, if desired, for operating the grab 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP05077762A 2004-12-09 2005-12-02 Device and method for connecting a hoisting mechanism to a tool Not-in-force EP1669317B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1027698A NL1027698C2 (nl) 2004-12-09 2004-12-09 Inrichting voor het koppelen van een hefinrichting met een gereedschap alsmede een dergelijke werkwijze.

Publications (2)

Publication Number Publication Date
EP1669317A1 EP1669317A1 (en) 2006-06-14
EP1669317B1 true EP1669317B1 (en) 2010-03-10

Family

ID=34974667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077762A Not-in-force EP1669317B1 (en) 2004-12-09 2005-12-02 Device and method for connecting a hoisting mechanism to a tool

Country Status (5)

Country Link
EP (1) EP1669317B1 (da)
AT (1) ATE460378T1 (da)
DE (1) DE602005019836D1 (da)
DK (1) DK1669317T3 (da)
NL (1) NL1027698C2 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476641A1 (en) 2011-01-18 2012-07-18 Johannes Gerardus Bleekman A lifting device and s hydraulic system therfor, as well as a method for adapting the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1036412C2 (nl) * 2009-01-13 2010-07-14 Robertus Fransiscus Scherpenseel Systeem voor het losneembaar koppelen van een eerste inrichting, bij voorkeur een hefinrichting, met een tweede inrichting bij voorkeur een gereedschap.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141386A (en) * 1990-09-28 1992-08-25 Barwise Robert D Load handling apparatus with separable load coupling
US5607251A (en) * 1996-04-03 1997-03-04 The Stanley Works Quick coupler assembly for hanging attachment
DE29710009U1 (de) * 1997-06-09 1998-01-15 Bühler, Georg Sebastian, 86922 Eresing Schnellwechselsystem für Arbeitskräne (Forstkran)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476641A1 (en) 2011-01-18 2012-07-18 Johannes Gerardus Bleekman A lifting device and s hydraulic system therfor, as well as a method for adapting the same

Also Published As

Publication number Publication date
DE602005019836D1 (de) 2010-04-22
ATE460378T1 (de) 2010-03-15
DK1669317T3 (da) 2010-06-14
NL1027698C2 (nl) 2006-06-12
EP1669317A1 (en) 2006-06-14

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