EP2673233A1 - Connecteur pouvant être déclenché par surcharge - Google Patents

Connecteur pouvant être déclenché par surcharge

Info

Publication number
EP2673233A1
EP2673233A1 EP12744718.3A EP12744718A EP2673233A1 EP 2673233 A1 EP2673233 A1 EP 2673233A1 EP 12744718 A EP12744718 A EP 12744718A EP 2673233 A1 EP2673233 A1 EP 2673233A1
Authority
EP
European Patent Office
Prior art keywords
locking
dog
connector
casing
blocking body
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
EP12744718.3A
Other languages
German (de)
English (en)
Other versions
EP2673233A4 (fr
EP2673233B1 (fr
Inventor
Knut Ove Steinhovden
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 EP2673233A1 publication Critical patent/EP2673233A1/fr
Publication of EP2673233A4 publication Critical patent/EP2673233A4/fr
Application granted granted Critical
Publication of EP2673233B1 publication Critical patent/EP2673233B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
    • B66F19/005—Lifting devices for manhole covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof

Definitions

  • This invention relates to an overload-releasable connector. More particularly, it relates to an overload-releasable connector which fits complementarily into a connector holder, the connector including a locking-dog casing, which is connected to a load attachment, and being formed with at least one locking dog which is radially movable between a pushed- in or swung- in passive position and a pushed-out or swung-out active position, the locking dog fitting complementarily in the connector holder, and the connector being provided with a blocking body which is movable between a blocking position, in which the blocking body prevents the locking dog from being moved out of its locking position, and a free position, in which the locking dog is free to be moved away from its locking position.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art .
  • An overload-releasable connector that fits complementarily into a connector holder
  • the connector including a locking-dog casing, which is connected to a load attachment, and including at least one locking dog which is radial ly movable between a pushed- in or swung- in passive position and a pushed-out or swung-out active position, the locking dog fitting complementarily in the connector holder, and the connector being provided with a blocking body which is movable between a blocking position, in which the blocking body prevents the locking dog from being moved out of its locking position, and a free position, in which the locking dog is free to be moved away from its locking position.
  • the connect or is characterized by the load attachment, which is axially movable relative to the locking-dog casing, being locked to the locking-dog casing by means of a shear pin. All the components of the connector may form a unit even after the shear pin has sheared off.
  • the entire connector can be pulled out of the connector holder, even in an overloaded state, so that a new connector, alternatively the same connector with a new shear pin, may immediately be connected to the connector holder.
  • a displacement of the load attachment relative to the locking-dog casing may bring the load attachment to hit the blocking body or a part connected to the blocking body, a further displacement of the load attachment relative to the locking-dog casing bringing the blocking body to be moved into its free position.
  • the locking-dog casing may be of a cylindrical shape with at least one radial locking-dog cut-out for a locking dog, the blocking body being centrical, axially movable in the locking-dog casing. Thereby the blocking body may lock several locking dogs that may be distributed around the centre axis of the locking-dog casing.
  • the locking-dog casing may be provided with a first axial slot, through which a connecting element connecting the blocking body to an actuating body extends.
  • the load attachment is provided with a second axial slot through which the connecting element extends.
  • the load attachment may abut against the connecting element and thereby be connected to the locking-dog casing, the at least one locking dog and to the blocking body.
  • the structure of the connector has the effect of lateral forces acting on the connector affecting the shear pin only to an insignificant degree.
  • a connector in accordance with the invention enables new connection of a connector to the connector holder after an overloading has happened, without any intermediate cleaning or repair work on the connector holder being necessary.
  • Figure 1 shows, in perspective, a connector according to the invention which is connected to a connector holder
  • Figure 2 shows an axial section of the connector
  • Figure 3 shows the same as figure 2, but a blocking body
  • Figure 4 shows the same as figure 2, but after a shear pin has sheared off and the connector has been released;
  • Figure 5 shows the same as figure 4, but after the connector has been pulled out of the connector holder.
  • the reference numeral 1 indicates a connector which is connected to a connector holder 2.
  • the connector 1 is provided with a lifting eye 4 for the connection of a lifting tool, not shown, in the form of a shackle or the like.
  • the connector holder 2 is arranged to be connected to a load, not shown, or to a fixed attachment.
  • a tubular locking-dog casing 6 is provided with a number of radial locking-dog cut-outs 8 at its lower portion, which are distributed around the centre axis 10 of the connector 1.
  • a locking dog 12 is arranged, ro- tatable around a pivot axle 14 between a swung- in position and a swung-out position.
  • the locking-dog casing 6 is formed with two diametrically opposite, axially elongated, through- going first slots 16.
  • a first shear-pin bore 18 extends through the locking-dog casing 6 at the upper end portion of the locking-dog casing 6.
  • a load attachment 20 which is provided with the lifting eye 4 at its top, is tubular at its opposite portion and, axially movable, surrounds the locking-dog casing 6.
  • the load attachment 20 is also formed with two diametrically opposite, axially elongated, through-going second slots 22 corresponding with the first slots 16 in the locking-dog casing 6.
  • a second shear-pin bore 24 extends through the load attachment 20, corresponding with the first shear-pin bore 18 in the locking-dog casing 6.
  • a shear pin 26 is positioned in the shear-pin bores 18, 24.
  • a blocking body 28 is arranged centrically, axially movable in the locking-dog casing 6.
  • a diametric bore 30 extends through the blocking body 28.
  • a connecting element 32 here in the form of a bolt, extends through the bore 30, the first slots 16 and second slots 22 and out to an external, axially movable actuating body 34.
  • the connector 1 fits complementarily in the tubular connector holder 2 which is provided with annular grooves 36 internally for the locking dog 12.
  • the connector holder 2 is provided with an entrance cone 38 to facilitate the leading-in of the connector 1 when it is to be moved into the connector holder 2.
  • the connector 1 includes an axially movable holder ring 40 which is arranged to hold the locking dog 36 in a swung- in position, see figure 5.
  • the holder ring 40 hits the connector holder 2 and is then moved along the load attachment 20 and out of its locking position by further movement of the connector 1 into the connector holder 2.
  • the connector 1 may be released by moving the actuating body 34 in the direction away from the connector holder 2.
  • the shear pin 26 When overloaded, the shear pin 26 will shear off and the locking-dog casing 6 may be moved downwards relative to the load attachment 20, see figure 4. The connecting element 32 will thereby strike against the second slot 22 in the load attachment 20. Thereby, the blocking element 28 is moved upwards relative to the locking-dog casing 6 and out of its locking position behind the locking dog 12, see figure 4.
  • the shear pin 26 is affected only by torsional forces and axial load between the load attachment 20 and the locking-dog casing .
  • the connector 1 When the locking dog 12 pivots into its swung-in position, the connector 1 may be moved out of the connector holder 2 in its entirety with all the components 42 belonging to it, which include the locking-dog casing 6, the locking dog 12, the pivot axle 14, the load attachment 20, the shear pin 26, the blocking element 28, the connecting element 32, the actuating element 34 and the holder ring 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Confectionery (AREA)
  • Seal Device For Vehicle (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
EP12744718.3A 2011-02-08 2012-01-23 Connecteur pouvant être déclenché par surcharge Active EP2673233B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20110220A NO334870B1 (no) 2011-02-08 2011-02-08 Overlastutløsbar lastkopling
PCT/NO2012/000006 WO2012108772A1 (fr) 2011-02-08 2012-01-23 Connecteur pouvant être déclenché par surcharge

Publications (3)

Publication Number Publication Date
EP2673233A1 true EP2673233A1 (fr) 2013-12-18
EP2673233A4 EP2673233A4 (fr) 2015-05-27
EP2673233B1 EP2673233B1 (fr) 2016-03-23

Family

ID=46638813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12744718.3A Active EP2673233B1 (fr) 2011-02-08 2012-01-23 Connecteur pouvant être déclenché par surcharge

Country Status (3)

Country Link
EP (1) EP2673233B1 (fr)
NO (1) NO334870B1 (fr)
WO (1) WO2012108772A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO341119B1 (no) * 2015-05-06 2017-08-28 Knut Ove Steinhovden Brytbar kopling mellom løfteutstyr og last
CN107215830B (zh) * 2017-06-20 2019-06-07 江苏富华交通运输设备股份有限公司 一种井盖开启装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240090C2 (de) * 1992-11-28 1995-10-12 Leistritz Ag Krankupplungs-Automat
NO311816B1 (no) * 2000-04-13 2002-01-28 Knut Ove Steinhovden Utlösbar låseanordning for mekanisk kopling
NO313003B1 (no) * 2000-05-19 2002-07-29 Knut Ove Steinhovden Oppdriftsutlösbar mekanisk kopling

Also Published As

Publication number Publication date
NO20110220A1 (no) 2012-08-09
WO2012108772A1 (fr) 2012-08-16
EP2673233A4 (fr) 2015-05-27
NO334870B1 (no) 2014-06-23
EP2673233B1 (fr) 2016-03-23

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