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WO2007134398A1 - Dispositif de verrouillage - Google Patents

Dispositif de verrouillage Download PDF

Info

Publication number
WO2007134398A1
WO2007134398A1 PCT/AU2007/000708 AU2007000708W WO2007134398A1 WO 2007134398 A1 WO2007134398 A1 WO 2007134398A1 AU 2007000708 W AU2007000708 W AU 2007000708W WO 2007134398 A1 WO2007134398 A1 WO 2007134398A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking device
components
component
aligned holes
locking
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.)
Ceased
Application number
PCT/AU2007/000708
Other languages
English (en)
Inventor
Paul Armstrong Berry
Murray James Clarke
Stephen John Celati
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.)
Dematic Pty Ltd
Original Assignee
Dematic Pty Ltd
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
Priority claimed from AU2006902809A external-priority patent/AU2006902809A0/en
Application filed by Dematic Pty Ltd filed Critical Dematic Pty Ltd
Priority to NZ573288A priority Critical patent/NZ573288A/en
Priority to AU2007252309A priority patent/AU2007252309B2/en
Publication of WO2007134398A1 publication Critical patent/WO2007134398A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
    • A47B57/30—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports
    • A47B57/40—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of hooks coacting with openings
    • A47B57/408—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of hooks coacting with openings with a security device

Definitions

  • the present invention relates to a racking system and more particularly to a locking device used in the racking system to resist upward movement of one component (typically a racking beam) relative to a second component (typically a racking upright) .
  • the locking device has particular application in adjustable pallet racking and the invention is herein described in that context.
  • Storage racking systems are widely used in warehousing and other industrial facilities. These systems typically include multiple levels of metal racking beams arranged to support cartons or pallets and which are supported by vertical load bearing members commonly referred to as uprights. These uprights are typically made from a profile steel section and metal bracing is provided which extends between adjacent uprights.
  • adjustable pallet racking where rather than bolting the racking beams to the uprights, the ends of the beams have "tangs" which wedge into slots in the upright, thus providing a rigid connection which can be engaged and disengaged quickly and easily.
  • the gravity load of the stored goods generally keeps the tangs properly seated in position, but it is still necessary to provide some form of locking device against accidental upward forces, which can occur if the pallet under the beam is lifted too high whilst it is being removed.
  • various forms of safety devices have been provided, these exhibit various limitations and as such there is an ongoing demand for devices that are both easy to install and less prone to fail, particularly under repeated upward loading as often occurs in harsh warehouse environments.
  • the present invention provides a locking device for a racking system to resist upward movement of a first component relative to a second component of the system, the device comprising a leading portion, a trailing portion, and a cross member extending generally along a longitudinal axis and interconnecting the leading and the trailing portions, the leading portion extending from the cross member and being configured to be able to be inserted through aligned holes disposed in respective ones of the components and, once inserted, the device is arranged to subsequently be moved to an installed position where the cross member extends through the holes and the leading and trailing portions inhibit removal of the device from the holes with the leading portion extending generally upwardly.
  • the leading portion is configured to be able to be inserted through the aligned holes and is designed to be unable to be withdrawn from those holes when in the installed position.
  • the locking device is arranged to be inserted with the first component (which is typically the racking beam) being the outermost facing component. With this arrangement, the leading portion is disposed inwardly of the connection adjacent the second component (typically an upright) .
  • the device can only fail in shear as distinct from disengaging from one or other of the components .
  • the leading portion extends back over the cross-member to form a re-entrant bend between the cross-member and the leading position.
  • the trailing portion is configured to maintain the locking device in the installed position.
  • the trailing portion is of a sufficient mass to bias the locking pin into the installed position.
  • the trailing portion projects from the cross- member in a direction transverse to the longitudinal axis of the cross-member and is angularly displaced from the leading portion about the longitudinal axis by approximately 180°.
  • the trailing portion projects generally perpendicular to the longitudinal axis. With this arrangement the device tends to self-align under gravity into the installed position where the leading portion extends generally upwardly.
  • the first and second components include multiple sets of aligned holes when interconnected.
  • the trailing portion in one embodiment of the locking device, is operative to locate in a further set of aligned holes so as to maintain the device in the installed position.
  • the trailing portion incorporates a locking formation at its distal margin to secure the trailing portion in the further set of aligned holes.
  • This arrangement has the advantage that it provides a positive retention mechanism to maintain the locking device in the installed position. Furthermore, the strength of the locking device can be significantly increased as it provides a second shear element into the locking device, the first being the cross-member, the second being the component of the trailing portion extends through the further set of aligned holes.
  • the locking formation incorporates a downwardly facing arcuate engagement surface that is arranged to move across an edge region of at least one of the components on movement of the device to the installed position, and wherein when in the installed position, the engagement surface is arranged to bear against that edge region to inhibit release of the trailing portion from the further set of aligned holes.
  • the trailing portion includes an upwardly directed end that is forced into engagement with the component edge to induce a wedging action between the first and second components as it is inserted into the further set of aligned holes. This wedging action operatively biases those components into proper alignment.
  • the invention in yet a further aspect, relates to a locking device for an adjustable racking system to resist upward movement of a first component relative to a second component of a racking system, the components each including a plurality of holes and are arranged to be interconnected in an arrangement where first and second sets of aligned holes are provided, the device comprising a first locking formation to extend through the first set of aligned holes, and a second locking formation to extend through the second set of aligned holes.
  • the locking device in accordance with this further aspect may be configured to include the locking formation as described in the earlier embodiment on one or both of the first and second locking formations.
  • a locking device may be formed as an integral item. Whilst it may be made from any suitable material such as high-strength or reinforced plastic, in a particular form the device is formed from a single length of metal wire. Such a locking device is inexpensive and easy to manufacture while still having the requisite strength.
  • the invention provides a connection between first and second components of a racking system; the first component including downwardly facing tangs that are seated in slots formed in the second components to form a rigid connection therebetween; at least one set of aligned holes that extend through the components are formed when the tangs are properly seated in the slots and wherein the connection further comprises a locking device to resist upward movement of the first component relative to the second component, the device comprising a cross-member extending through the holes; a leading portion extending from the cross member in a direction transverse to a longitudinal axis of the cross member and being disposed adjacent the second component; and a trailing portion extending from the cross member adjacent the first component, the leading and trailing portions inhibiting removal of the device from the holes, and the leading portion extends generally upwardly.
  • the invention provides a connection between first and second components of a racking system; the first component including downwardly- facing tangs that are seated in slots formed in the second components to form a rigid connection therebetween; at least two sets of aligned holes that extend through the components when the tangs are properly seated in the slots and wherein the connection further comprises a locking device to resist upward movement of the first component relative to the second component, and comprising a first locking formation extending through a first set of the aligned holes, and a second locking formation extending through a second set of the aligned holes.
  • the invention relates to a racking system incorporating a connection in any form described above.
  • the first component is a racking beam and the second component is an upright.
  • Fig. 1 is a schematic view of an adjustable racking system
  • Fig. 2 is an assembly view of a connection between a racking beam and upright in the racking system of Fig. 1;
  • Fig. 3 is a side view of a first embodiment of a locking device for the racking system of Fig. 1;
  • Fig. 4 is a front elevation of the locking device of Fig. 3;
  • Fig. 5a-d is an installation sequence for installing the locking device of Fig. 3 into the racking system of Fig. 1;
  • Fig 6 is a side elevation of a second embodiment of the locking device for the racking system of Fig. 1;
  • Fig. 7 is a front elevation of the locking device of Fig. 6;
  • Fig. 8a-d is an installation assembly of the locking device of Fig. 6;
  • Fig. 9 is a side elevation of a third embodiment of the locking device for the racking system of Fig. 1 ;
  • Fig. 10 is a front elevation of the locking device of Fig. 9;
  • Fig. lla-d is an installation sequence for the locking device of Fig. 9;
  • Fig. 12 is a side elevation of a fourth embodiment of the locking device for the racking system of Fig. 1;
  • Fig. 13 is a front elevation of the locking device of Fig. 12 ;
  • Figs. 14a-d is an installation sequence for the locking device of Fig. 12.
  • Fig. 1 illustrates a storage racking system 100 that includes multiple levels 101, 102 of metal racking beams 103 which support cartons or pallets 104 that are supported by vertical members 105 that are commonly referred to as uprights. These uprights 105 are typically made from a profiled steel section and metal bracing (not shown) extends between adjacent uprights.
  • the metal racking beams 103 include connectors 106 at opposite ends which connect the beams to adjacent uprights 105.
  • the racking system 100 is of a type referred to as adjustable racking. As best illustrated in the assembly view of Fig. 2, the term
  • connection 110 refers to the fact that rather than bolting the beams 103 to the uprights 105, a connection 110 is provided where the connectors 106 are provided with a series of tangs 107 which wedge into slots 108 in the uprights, thus providing a rigid connection which can be engaged and disengaged quickly and easily. Whilst the gravity load of the pallets 104 generally keeps the tangs 107 properly seated in position, the connection 110 further comprises a locking device 10 (with the illustrated version being the second embodiment described in detail below with reference to Figs. 6, 7 and 8a to 8d) to protect against accidental upward forces, which can occur if a pallet 104 under a beam is lifted too high whilst it is being removed. As will be explained in more detail below, the locking device 10 extends through two holes 109 formed in the connector 106 and through the respective slots 108.
  • a first embodiment of the locking device 10 is disclosed with reference to Figs. 3 and 4 and the installation sequence shown in Figs. 5a-d.
  • the locking device is - S - made as an integral item which in the illustrated form is made from a single length of metal wire.
  • the wire is formed from mild steel having a gauge of 3-6 mm.
  • the device includes an intermediate cross-member 11 which extends generally along a longitudinal axis CL between notional ends 12 and 13.
  • the device 10 further includes a leading portion 14 which projects from the first end 12 in a direction transverse to the longitudinal axis CL to a terminal end 15 of the device.
  • the leading portion 15 is inclined to extend back over the cross-member 11 so as to form a re-entrant angle at the bend 16 between the cross-member 11 and the leading portion 14.
  • the device 10 further includes a trailing portion 17 which extends from the second end 13 of the cross-member to the other terminal end 18 of the device 10.
  • this trailing portion 17 is made up of a straight section of wire that extends substantially perpendicular from the longitudinal axis CL of the cross- member. Further as best illustrated in Fig. 4, the trailing portion 17 is angularly spaced about the longitudinal axis CL from the leading portion by 180° so that the locking device is formed substantially in plane. However, it is to be appreciated that the locking device could still function with some variation in this angular displacement .
  • Figs. 5a-d show the installation sequence of the locking device 10.
  • the device 10 is presented to the connection 110 in an orientation wherein the terminal end 15 can be inserted through the aligned holes (108, 109) so that at least part of the leading portion 14 is disposed in the holes (108, 109) .
  • the device 10 is then rotated as shown in Figs. 5b-d through approximately 100° which causes the leading portion 14 to locate fully within the upright 105, the cross member 11 is positioned within the aligned holes 108, 109 and the trailing portion 17 rests against an the outer face 111 of the connector 106. Because of the size of the trailing portion 17 relative to the leading portion 14, the trailing portion will move under gravity to the installed position as shown in Fig. 5b where the trailing portion extends downwardly whilst the leading portion extends upwardly.
  • the device 10 can only fail in shear as distinct from disengaging from one or other of the components 103, 105
  • a second embodiment 20 of the locking device is disclosed with reference to Figs. 6 and 7 and the installation sequence shown in Figs. 8a-d.
  • the locking device 20 of the second embodiment includes many of the features of the first embodiment, like features have been given like reference numerals.
  • the locking device 20 includes a variation in the trailing portion 17. Rather than being a straight section, the trailing portion includes a locking formation 21 that is arranged to interfit in a second set of aligned holes (108 1 , 109 1 ) .
  • the locking formation 21 is formed as an arcuate section 22 that is turned out of a straight mid region 23 of the trailing portion 17.
  • the arcuate section 22 includes a downwardly facing generally convex bearing surface 24 and an upwardly turned end portion 25 which extends to the terminal end 26 of the device 20.
  • the device 20 is arranged to be positively retained in the installed position. Further, the locking device 20 is arranged to introduce a biasing force onto the beam 103 to cause it to locate properly in position on the upright 105. This is best illustrated with reference to the installation sequence of Figs. 8a to 8d.
  • the leading portion 14 is inserted in a similar manner to the earlier embodiment.
  • the upturned end portion 25 is caused to abut a lower edge 112 of the hole 109 in the beam 103.
  • the locking device 20 needs to be forced to move to the installed position as the upturned end 25 rides over the edge 112. This induces a wedging action as the cross member 11 bears against an upper edge 113 of the upright 105 which forces the beam 103 downwardly into tighter engagement with the upright 105.
  • the bearing surface 24 is biased into engagement with the lower edge 112, thereby forming a "tight fit" connection for the locking device 20.
  • a third embodiment 30 of the locking device is disclosed with reference to Figs. 9 and 10 and the installation sequence shown in Figs, lla-d.
  • the locking device 30 of the third embodiment includes many of the features of the earlier embodiments, like features have been given like reference numerals.
  • the locking device 30 functions in a similar manner to the second embodiment of the device 20 and in particular is arranged to engage with two sets of aligned holes.
  • the trailing portion 17 includes a locking formation 21.
  • the locking formation 21 is formed as a downwardly facing shallow hook 31 which in use is designed to locate in behind the aligned holes (108 1 , 109 1 ) (see Fig.11 d) .
  • the locking device 30 allows some vertical movement whilst being disposed in the sets of aligned holes.
  • a fourth embodiment 40 of the locking device is disclosed with reference to Figs. 12 and 13 and the installation sequence shown in Figs. 14a-d.
  • the connection is similar to the second and third embodiments as the device locates in the two sets of aligned holes.
  • the locking formation 21 is of the same design as the second embodiment, but the leading portion 41 varies from the earlier embodiments as it is formed as a downwardly directed hook. This arrangement does provide a shear element at the leading portion 41 which is effective in resisting upward movement of the beam 103 relative to the upright 105. However, this configuration does not provide the wedging action which was a feature of the earlier embodiments .
  • the installation of the locking device 40 as shown in Figs. 14a-d is slightly different from the second and third embodiments in that the device needs to be rotated about the axis CL of the cross member 11 as well as being pivoted horizontally to engage the lower locking formation 21.

Landscapes

  • Connection Of Plates (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

L'invention concerne un dispositif de verrouillage (10, 20, 30, 40) pour un système d'étagères 100 qui est aménagé pour résister au mouvement ascendant d'un premier composant (typiquement une barre d'étagère 103) par rapport à un deuxième composant (typiquement un montant 105). Le dispositif comprend une partie avant 14, une partie arrière 17 et une traverse 11 s'étendant généralement le long d'un axe longitudinal CL et reliant les parties avant et arrière (14, 17). La partie avant 14 s'étend depuis la traverse 11 dans une direction transversale par rapport à l'axe longitudinal CL et est configurée de façon à pouvoir être insérée dans des trous alignés (108, 109) placés dans des trous respectifs des composants (103, 105) et, une fois insérée, le dispositif (10, 20, 30, 40) est posé de façon à être déplacé par la suite en une position installée où la traverse 11 se déploie à travers les trous (108, 109) et les parties avant et arrière (14, 17) empêchent le retrait du dispositif des trous, la partie avant s'étendant généralement vers le haut.
PCT/AU2007/000708 2006-05-24 2007-05-23 Dispositif de verrouillage Ceased WO2007134398A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NZ573288A NZ573288A (en) 2006-05-24 2007-05-23 A locking device for racking system
AU2007252309A AU2007252309B2 (en) 2006-05-24 2007-05-23 A locking device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006902809A AU2006902809A0 (en) 2006-05-24 A locking device
AU2006902809 2006-05-24

Publications (1)

Publication Number Publication Date
WO2007134398A1 true WO2007134398A1 (fr) 2007-11-29

Family

ID=38722873

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2007/000708 Ceased WO2007134398A1 (fr) 2006-05-24 2007-05-23 Dispositif de verrouillage

Country Status (3)

Country Link
AU (1) AU2007252309B2 (fr)
NZ (1) NZ573288A (fr)
WO (1) WO2007134398A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5791502A (en) * 1996-08-13 1998-08-11 Lodi Metal Tech., Inc. Pallet rack crossbeam safety lock
US20020027116A1 (en) * 1999-04-28 2002-03-07 Illinois Tool Works Inc. Storage rack system and locking latch therefor
US20040079719A1 (en) * 2002-10-03 2004-04-29 Unarco Material Handling, Inc. Releasable locking device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2746852C3 (de) * 1977-10-19 1981-11-05 Thyssen Industrie Ag, 4300 Essen Palettenregal
US6510955B2 (en) * 2000-04-07 2003-01-28 Ridg-U-Rak, Inc. Beam automatic lock

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5791502A (en) * 1996-08-13 1998-08-11 Lodi Metal Tech., Inc. Pallet rack crossbeam safety lock
US20020027116A1 (en) * 1999-04-28 2002-03-07 Illinois Tool Works Inc. Storage rack system and locking latch therefor
US20040079719A1 (en) * 2002-10-03 2004-04-29 Unarco Material Handling, Inc. Releasable locking device

Also Published As

Publication number Publication date
AU2007252309A1 (en) 2007-11-29
AU2007252309B2 (en) 2012-09-20
NZ573288A (en) 2011-05-27

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