WO2015024054A2 - Attache amovible - Google Patents

Attache amovible Download PDF

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Publication number
WO2015024054A2
WO2015024054A2 PCT/AU2014/000824 AU2014000824W WO2015024054A2 WO 2015024054 A2 WO2015024054 A2 WO 2015024054A2 AU 2014000824 W AU2014000824 W AU 2014000824W WO 2015024054 A2 WO2015024054 A2 WO 2015024054A2
Authority
WO
WIPO (PCT)
Prior art keywords
head
locking element
fastener according
releasable fastener
shank
Prior art date
Application number
PCT/AU2014/000824
Other languages
English (en)
Other versions
WO2015024054A3 (fr
Inventor
Brian Davies
Original Assignee
Brian Investments 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 AU2013903138A external-priority patent/AU2013903138A0/en
Application filed by Brian Investments Pty Ltd filed Critical Brian Investments Pty Ltd
Publication of WO2015024054A2 publication Critical patent/WO2015024054A2/fr
Priority to US15/048,387 priority Critical patent/US20160252124A1/en
Priority to AU2016100205A priority patent/AU2016100205A4/en
Priority to AU2016201211A priority patent/AU2016201211A1/en
Publication of WO2015024054A3 publication Critical patent/WO2015024054A3/fr
Priority to AU2018201946A priority patent/AU2018201946A1/en
Priority to AU2020203576A priority patent/AU2020203576A1/en
Priority to AU2022202297A priority patent/AU2022202297A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/002—Means for preventing rotation of screw-threaded elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0258—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using resiliently deformable sleeves, grommets or inserts

Definitions

  • the present invention generally relates to a releasable fastener.
  • the invention relates to a fastener assembly to secure a first object to a second object, such as a structure, wherein only one side of one of the objects may be readily accessible.
  • Fasteners are a common and well-used means to secure one object to another. Typically when doing so an operator is able to access both sides of each object and can therefore easily tighten the fastener to ensure the two objects are securely fastened. However, there are many instances where only one side of the object may be easily accessed. This is problematic when securing an object to another object using fasteners.
  • wear liners are used extensively throughout the mining industry to protect those parts of structures which are exposed to wear. Due to their very nature, the wear liners are sacrificial and require regular replacement as they wear to a level where they no longer serve their purpose. It is therefore important that the wear liners can be readily removed. However, due to the harsh operating conditions, it is also important that the wear liners are held firmly in place during their service cycle.
  • Wear liners are used to protect mills, transfer chutes, crushers and other structures. Once these structures have been installed the rear side of the structure is often concealed or is difficult to access. In order to secure any object to these structures a number of solutions are available.
  • One of these solutions includes the use of a blind fastener or blind rivet. Normally these methods do not allow the head of the fastener to be exposed, as this would cause the failure of the retention system. They may also not be removable, rendering it difficult to replace the object secured to the structure.
  • a further deficiency in using some forms of blind fasteners is that they rely upon a complementary match of the surface profile of the structure with the engaging surface profile of the wear liner as they have a fixed 'grip length' i.e. it is important that the underside surface of the wear liner closely mirrors that of the surface it is to protect. Where this does not occur the operator may be prevented from being able to install the fasteners to secure the object properly or at all.
  • the present invention provides a releasable fastener for securing an object to a structure, the structure comprising a first surface, and a second surface against which the object is secured, a portion of the fastener being adapted to pass through the object and engage a portion of the structure, the fastener comprising a head, a shank extending therefrom and a locking element supported on the shank, the locking element being adapted to operatively engage with a first portion of the structure such that upon fastening of the fastener, the object and structure are clamped between the head and the locking element.
  • the present invention allows the object to be easily installed, removed and replaced, along with the releasable fastener. Furthermore, the configuration of the head of the fastener is such that should it experience significant wear it will still continue to secure the object relative to the structure, but when replacement of the object is required, the fastener can be readily deactivated and the object removed.
  • the fastener is designed to be used with structures where the first surface of the structure is not readily accessible once the structure is complete. However, it is to be understood that this invention is not limited to such a structure. It is readily understood that the present invention can be applied to all manner of structures, providing a convenient and quick means to secure and subsequently remove the object from the structure.
  • the first portion of the structure may provide an aperture for receiving the locking element of the fastener.
  • the aperture may be in the form of a slot.
  • the structure may have a plurality of slotted apertures, each adapted to enable operative engagement with a fastener.
  • the locking element is receivable in the aperture when the locking element is in a first position, and is releasably locked with respect to the structure when the locking element is in a second position.
  • the slotted aperture is formed in the structure post installation of the structure.
  • the slotted aperture is formed in the structure during construction of the structure.
  • the head is received in a hole in the object such that an outer surface of the head is flush with the outer surface of the object when the fastener is installed.
  • a sidewall of the head may provide a tapered portion.
  • the tapered portion may extend along the length of the sidewall of the head to define a generally frusto-conical head.
  • the head may have a first tapered sidewall and a second tapered sidewall, defining a step in the sidewall of the head at the junction of the first tapered sidewall and the second tapered sidewall.
  • the second tapered sidewall may be adjacent a bottom wall of the head and be of a larger diameter than the first tapered sidewall at the junction.
  • the configuration of the head ensures the bottom section of the sidewall of the head remains in contact with the sidewall of the hole as the head wears.
  • the shank may have a diameter smaller than the width of the bottom wall of the head.
  • the shank may have a diameter smaller than the diameter of the bottom wall of the head.
  • the hole in the object is shaped to complement the head, wherein a sidewall of the hole is the same or similarly tapered as the tapered portion of the head.
  • the angle of the sidewall of the hole is slightly offset to the angle of the tapered portion of the head.
  • the locking element may be located at an end of the shank remote from the head.
  • the locking element is formed integral with the shank to provide a unitary member.
  • the shank is threadingly received in the head.
  • rotation of the head may wind the head on or off the shank.
  • the resistive engagement may be provided by a coating on the external threads of the shank and/or a coating on the internal threads of the head.
  • the coating may be in the form of thread tape, a non-setting silicone, wax or binder.
  • the coating may also inhibit rust and debris (especially mining fines) from forming on the threaded portions.
  • the coating may also reduce any play/slack between the head and the shank.
  • the locking element is threadingly received on the shank.
  • the shank is formed integral with the head to provide a unitary member. In this arrangement rotation of the head may wind the head and shank on or off the locking element.
  • the resistive engagement causes the locking element to rotate with the shank when the shank is rotated, the resistive engagement being overcome when the locking element has passed to a second position and sufficient force is applied thereto to overcome the resistive engagement. Further rotation of the head then fastens the fastener.
  • the resistive engagement may be provided by a coating on the external threads of the shank and/or a coating on the internal threads of the locking element.
  • the coating may be in the form of thread tape, a non-setting silicone, wax or binder.
  • the coating may also inhibit rust and debris (especially mining fines) from forming on the threaded portions.
  • the coating may also reduce any play/slack between the locking element and the shank.
  • the resistive engagement may be provided by a sleeve fitted over the external threads of the shank.
  • the resistive engagement may be provided by a nylon ring incorporated in the locking element.
  • the shank has a stop located at its end to prevent the locking element from being wound completed o ff the shank.
  • the locking element comprises a clamping portion wherein the clamping portion assists in clamping the object to the structure.
  • the locking element comprises a locking member to lock the clamping portion in a manner which prevents rotation of the clamping portion beyond the second position.
  • the locking element further comprises a mating surface which aligns with and mates with a complementary mating surface of the aperture to releasably retain the locking element with respect to the aperture when the locking element is in the second position.
  • the angular displacement of the locking element between the first position and second position is less than 180°.
  • the angular displacement of the locking element between the first position and second position is 90°.
  • the fastener comprises an identification means to identify whether the locking element is in the first position or second position.
  • the identification means may be in the form of indicia on an end of the shank adjacent the head. This is particularly beneficial when the locking element and shank are integrally formed.
  • the fastener comprises a retaining means to retain the locking element in the second position.
  • the retaining means assists to prevent, or at least minimise accidental rotation of the locking element from the second position to the first position.
  • the retaining means may be in the form of a detent arrangement.
  • the detent arrangement may be in the form of a resilient projection extending from a surface of the locking member, whereby the projection engages the side of the aperture as the locking element passes between the first position to the second position.
  • the projection may provide resistance to the rotation of the locking element, whereby when a prescribed force is applied the initial resistance is overcome, causing the resilient projection to deform or retract to allow the further rotation of the locking element to the second position.
  • the resilient projection may be vulcanised or glued to the surface of the locking member.
  • the resilient projection may be silicon.
  • the initial resistance provided by the projection is less than the resistive engagement between the head and the unitary shank and locking element. This allows an operator to rotate the head, resulting in simultaneous rotation of the unitary shank and locking element, and causing the locking element to move from the first position to the second position.
  • the initial resistance provided by the projection is less than the resistive engagement between the shank and the locking element. This allows an operator to rotate the unitary head and shank, resulting in simultaneous rotation of the locking element, causing the locking element to move from the first position to the second position.
  • the resilient projection may be on at least one of the curved surfaces.
  • the locking member may be adjacent the clamping portion.
  • a portion of the locking member may be confined to the slotted aperture when the locking element is received in the aperture and the object and structure are not securely clamped between the head and the locking element.
  • the locking member Before the fastener has been fastened and the object secured to the structure, the locking member is partially located within the aperture. In this position the object may still be retained relative to the structure but the object is capable of a degree of movement relative to the structure. The fastener will need to be fastened in order to secure the object to the structure.
  • the locking member may be completely confined to the slotted aperture when the locking element is received in the aperture and the object and structure are securely clamped between the head and the locking element.
  • the locking member is located in the confines of the aperture and the clamping portion bears against the surface of the structure adjacent the aperture.
  • the cross sectional profile of the locking member may have a first dimension which is less than the smallest dimension of the aperture, and a second dimension greater than the smallest dimension of the aperture such that as the locking member is rotated the locking element may be rotated between the first position and the second position. With this arrangement the locking element may only be rotated from the first position to the second position, and rotated in the reverse direction from the second position to the first position. The configuration of the locking member prevents rotation of the locking element past the second position.
  • the cross sectional profile of the locking member is of a rectangular or square configuration modified such that two diagonally opposed corners are curved such that as the locking member is rotated the curved corners permit the locking element to be rotated between the first position and the second position.
  • the distance between the two curved corners is equal to or less than the smallest dimension of the aperture.
  • the distance between the two non curved corners is greater than the smallest dimension of the aperture.
  • the clamping portion comprises two arms extending outwardly relative to the locking member in an opposed relation.
  • the extent of the arms is less than the largest dimension of the aperture such that the clamping portion may be received therethrough.
  • the hole in the object may have a diameter which is greater than the extent of the two arms.
  • the smallest diameter of the tapered sidewall of the hole is greater than the extent of the two arms. .
  • the smallest diameter of the tapered sidewall of the hole may be smaller than the smallest diameter of the head. With this configuration the bottom wall of the head is spaced from the structure when the fastener is installed and fastened. In another embodiment the smallest diameter of the tapered sidewall of the hole is sized such that when the head is received therein and the fastener is installed and fastened, the bottom wall of the head is in direct engagement with the structure while the sidewall of the head is still able to engage with the sidewall of the hole. [0058] When the locking element is in the first position the clamping portion is arranged such that it aligns with the slotted aperture, allowing the arms to pass therethrough.
  • the clamping portion bears against the first surface of the structure as the fastener is tightened.
  • the fastener is only removed from the structure after the fastener is loosened and the locking element rotated back to the first position.
  • the head is adapted to co-operate with a tool to fasten the fastener relative to the structure.
  • the head is able to co-operate with the tool after the head has been worn extensively.
  • the head has at least two openings in spaced relation, each opening is adapted to receive a corresponding projection of the tool, whereupon rotation of the tool the projections received in the openings cause the fastener to rotate such that the locking element moves from the first position to second position when installing the fastener, and vice versa when removing the fastener.
  • the openings may extend from the upper surface of the head and terminate adjacent the bottom wall of the head. The openings may be parallel relative to each other. This ensures the tool can be used to rotate the head regardless of its wear profile.
  • the head may be adapted to be rotated by a tool.
  • the head may have a hexagonal outer shape for receiving a tool on its external surface.
  • the head may have a blind bore therein wherein the bore is hexagonal, the bore may receive a tool therein
  • the openings in the head may be filled with a removable material.
  • Each opening may have a plug inserted in the bottom of the opening before a material is placed therein to seal the opening.
  • the filling of the opening ensures that each opening is not compromised during the objects service life, allowing the tool to readily engage the openings, rotate the head, and remove the fastener when required.
  • the sidewalls and/or bottom wall of the head may be coated in a material to prevent corrosion and/or reduce friction between the head, opening and/or structure.
  • the material may be a graphite compound, silicone or other type of coating.
  • the head may be releasably retained relative to the tool to assist in installation and removal of the fastener.
  • the tool may have a plurality of magnets to releasably retain the head thereon.
  • the fastener may comprise a resilient grommet.
  • the grommet may be beatable in the aperture of the structure during installation of the fastener. Upon the locking element moving from the first position to the second position the grommet may be compressed into and fill the aperture. The grommet may be compressed into the aperture as the fastener is fastened.
  • the grommet may be made from a compressible polymer. The grommet effectively seals the aperture preventing, or at least minimising, the ingress of sulfides, salts, fines and other material into the aperture. This therefore inhibits corrosion within the aperture and prevents fluid from passing through the aperture. Furthermore, the grommet prevents accidental 'back turning' of the locking element, assisting in retaining it in position.
  • the fastener comprises a sensor.
  • the sensor measures the wear experienced by the head and transmits this data so that an operator is able to predict when the wear liner may need to be replaced.
  • the sensor may transmit data via a wired infrastructure or through a wireless system.
  • the senor extends through the shank and terminates in close proximity to the outer surface of the head.
  • the senor is received in a cavity in the shank of the fastener.
  • the senor has a transmitter secured to or relative to the end of the shank for transmitting data collected by the sensor.
  • the transmitter may be secured to the locking element.
  • the present invention provides a structure adapted to have a plurality of wear liners secured thereto using a plurality of fasteners as herein before described, the structure having an array of slotted apertures formed therein, the array of apertures adapted to align with holes in the plurality of wear liners.
  • the present invention further provides a releasable fastener for securing an object to a structure, the structure comprising a first surface, a second surface against which the object is secured and a slotted aperture, the fastener being adapted to operatively engage the slotted aperture and a hole in the object to releasably secure the object to the structure, the fastener comprising a head, a shank extending therefrom and a locking element supported on the shank, the locking element being adapted to operatively engage relative to the slotted aperture such that upon fastening of the fastener, the locking element rotates between a first position and a second position such that the object and structure are clamped between the head and the locking element.
  • the fastener is unlocked by rotating the locking member in the reverse direction from the second position to the first position.
  • the present invention further provides a releasable fastener for securing an object to a structure, the structure comprising a first surface, a second surface against which the object is secured and a slotted aperture, the fastener being adapted to be received relative to a hole in the object to releasably secure the object to the structure, the fastener comprising a head, a shank extending therefrom and a locking element supported on the shank, the locking element being adapted to operatively engage relative to the slotted aperture such that upon fastening of the fastener, the locking element rotates between a first position and a second position such that the object and structure are clamped between the head and the locking element.
  • Figure 1 is side view of a shank and a locking element of a fastener according to a first embodiment of the invention
  • Figure 2 is a right hand end view of figure 1 ;
  • Figure 3 is side view of a shank and a locking element of a fastener according to a second embodiment of the invention.
  • Figure 4 is a left hand end view of figure 1 and 3;
  • Figure 5 is a right hand end view of figure 3;
  • Figure 6 is a cross sectional side view of a head which may be used with either fastener of the first or second embodiments;
  • Figure 7 is an end view of figure 6
  • Figure 8 a, b, c is a cross sectional side view of the fastener of the first embodiment in a second position securing an object to a structure;
  • Figure 9 a, b, c is a cross sectional side view of the fastener of the second embodiment in a second position securing an object to a structure;
  • the present invention provides a fastener 1 1 for securing a first object to a second object.
  • the fastener is specifically designed to secure an object in the form of a wear liner 19 to a structure 13, such as a transfer chute, whereby the fastener 1 1 allows the wear liner 19 to be quickly installed on and removed from the structure.
  • a structure 13 such as a transfer chute
  • the fastener 1 1 allows the wear liner 19 to be quickly installed on and removed from the structure.
  • the present invention provides a very quick and easy to use fastener to secure a wear liner 19 to a second surface 17 of the structure 13, it has particular application for those structures 13 having a first surface 15 which is either concealed, or which is problematic to access.
  • the wear liner 19 comprises a plurality of holes 25 which are arranged so that each hole 25 aligns with a corresponding slotted aperture 18 in the structure. Once aligned the fastener 1 1 may cooperate with each aligned hole 25 and aperture 18 to releasably retain the wear liner 19 with respect to the structure 13. As described below each fastener 1 1 may then be fastened to secure the wear liner 19 to the structure 13.
  • the wear liner 19 comprises a first surface 21 , which is secured against the second surface 17 of the structure 13, and a second surface 23, which is exposed to wear.
  • the wear liner 19 comprises a plurality of holes 25 to assist in securing the wear liner 19 to the structure, as is described below.
  • the invention according to the first embodiment is in the form of a fastener 1 1 comprising a head 31 , a shank 33 which is threadingly received in the head 31 , and a locking element 35.
  • the locking element 35 is formed integrally with the shank 33 to provide a unitary member, as best shown in figure 1 .
  • the locking element 35 is provided at a second end 36 of the shank 33.
  • the locking element 35 comprises a clamping portion 41 and a locking member 43.
  • the locking member 43 is adjacent the clamping portion 41 in a direction towards the first end 34 of the shank 33.
  • the locking element 35 moves from a first position relative to the aperture 18 in the structure 13, to a second position to releasably retain the wear liner 19 with respect to the structure 13.
  • each fastener 1 1 may then be fastened to secure the wear liner 19 to the structure 13, clamping the wear liner 19 and structure 13 between the head 31 and the clamping portion 41 .
  • the cross sectional profile of the locking member 43 is of a square configuration modified such that two diagonally opposed corners 44 are curved, while diagonally opposed corners 46 remain unchanged for reasons which will be described below.
  • the clamping portion 41 comprises two arms 45 extending outwardly from the shank 33 in an opposed relation, as best shown in figures 2 and 4.
  • the locking element 35 also provides a retaining means in the form of a detent arrangement.
  • the detent arrangement in the present embodiment is provided by a resilient projection 51 extending from a surface 53 of the locking member 43.
  • the head 31 is adapted to threadingly receive an end of the shank 33 through a central opening 47.
  • the head 31 also has three smaller openings 49 spaced equidistant around the central axis. These openings 49 extend through the tapered head 31 and terminate adjacent the bottom wall of the head 31 , as can be seen in figure 8b, 9b.
  • the head 31 is frusto conical, having a first tapered sidewall 30 and a second tapered sidewall 32. At the junction of the first tapered sidewall 30 with the second tapered sidewall 32 the diameter of the first tapered sidewall 30 is larger than the second tapered sidewall 32 to provide an annular step 38. This difference in diameter enhances the clamping action and transfer of force from the head to the wear liner 19.
  • FIG. 3 A second embodiment of the invention is shown in figures 3 and 5. For convenience features that are similar or correspond to features of the fastener 1 1 of the first embodiment have been referenced with the same reference numerals. .
  • the fastener 1 1 1 is adapted to receive a sensor (not shown).
  • the fastener provides a housing 37 for the sensor.
  • the housing extends from the locking element 35 and has an opening 39 for receiving the sensor.
  • the opening 39 extends from the housing and terminates adjacent a first end 34 of the shank which is located remote from the locking element 35.
  • Figures 8 and 9 are schematic representations of the fastener 1 1 , 11 1 fastened to secure the wear liner 19 to the structure 13, effectively clamping one relative to the other.
  • the fastener 1 1 is first assembled. During assembly a coating of a binding agent(not shown) is applied to the portion of the external thread of the shank 33 which is to be received in the head 31 . The coating binds the head 31 to the shank 33 such that the head 31 resistively engages the shank 33, for reasons which will be described below.
  • a binding agent (not shown) is applied to the portion of the external thread of the shank 33 which is to be received in the head 31 .
  • the coating binds the head 31 to the shank 33 such that the head 31 resistively engages the shank 33, for reasons which will be described below.
  • the wear liner 19 is positioned on the structure 13 such that the holes 25 in the wear liner 19 each align with a slotted aperture 18 incorporated in the structure.
  • the locking element 35 of the fastener 1 1 is then inserted through the hole 25, and is orientated to be in a first position relative to the aperture 18 to allow the locking element 35 to pass into the aperture 18.
  • each hole 25 is larger in diameter than the extent of the arms 45 of the clamping portion 41 , and as the extent of the arms 45 is less than the largest dimension of the slotted aperture 18 the clamping portion 41 can pass through the hole 25 and aperture 18 when the locking element 35 is in the first position relative to the aperture 18.
  • the fastener is inserted such that the clamping portion 41 passes through the slotted aperture 18 and a portion of the locking member 43 remains within the confines of the slotted aperture 18.
  • a tool engages the openings 49 in the head 31 .
  • the head 31 is rotated clockwise.
  • the shank 33 is in resistive engagement with the head 31 , the shank 33, which is integrally formed with the locking element 35, is caused to simultaneously rotate.
  • each fastener 1 1 needs to be loosened and removed, or positioned such that the locking element 35 is in the first position relative to the aperture 18.
  • the fastener 1 1 may be loosened using the tool to rotate the head 31 in a counterclockwise direction.
  • the head 31 will need to be rotated until the head 31 extends sufficiently above the surface of the wear liner 19 such that when the head is pushed back into the hole 25, the locking element 35 is no longer within the confines of the aperture 18 and may therefore be freely rotated until the locking element 35 is in the first position relative to the aperture 18.
  • the fastener may then be removed.
  • the hole 25 in the wear liner 19 is conical/ tapered. This complements the shape of the head 31 and enables the fastener to maintain engagement with the hole 25 such that the wear liner 19 remains secured to the structure 13, even as the head 31 and the wear liner 19 wear.
  • the head and the shank may be a unitary member which is threadingly received in the locking element.
  • the present invention is not to be limited in scope by any of the specific embodiments described herein. These embodiments are intended for the purpose of exemplification only. Functionally equivalent products, formulations and methods are clearly within the scope of the invention as described herein.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)

Abstract

La présente invention concerne une attache amovible (11) pour fixer un objet (19) à une structure (13). La structure comprend une première surface (15), une seconde surface (17) contre laquelle l'objet est fixé et une ouverture à fente (18). L'attache est conçue pour entrer en prise fonctionnellement avec l'ouverture à fente et un trou (25) dans l'objet pour fixer de manière amovible l'objet à la structure. L'attache comprend une tête (31), une tige (33) s'étendant depuis ladite tête, et un élément de verrouillage (35) disposé sur la tige. L'élément de verrouillage est conçu pour entrer en prise fonctionnellement par rapport à l'ouverture à fente, de manière que suite à la fixation de l'attache, l'élément de verrouillage pivote entre une première et une seconde position pour que l'objet et la structure soient serrés entre la tête et l'élément de verrouillage.
PCT/AU2014/000824 2013-08-19 2014-08-19 Attache amovible WO2015024054A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US15/048,387 US20160252124A1 (en) 2013-08-19 2016-02-19 Releasable fastener
AU2016100205A AU2016100205A4 (en) 2013-08-19 2016-02-25 Releasable Fastener
AU2016201211A AU2016201211A1 (en) 2013-08-19 2016-02-25 Releasable Fastener
AU2018201946A AU2018201946A1 (en) 2013-08-19 2018-03-19 Releasable Fastener
AU2020203576A AU2020203576A1 (en) 2013-08-19 2020-05-29 Releasable Fastener
AU2022202297A AU2022202297A1 (en) 2013-08-19 2022-04-06 Releasable Fastener

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US15/048,387 Continuation-In-Part US20160252124A1 (en) 2013-08-19 2016-02-19 Releasable fastener
AU2016100205A Division AU2016100205A4 (en) 2013-08-19 2016-02-25 Releasable Fastener
AU2016201211A Division AU2016201211A1 (en) 2013-08-19 2016-02-25 Releasable Fastener

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WO2015024054A2 true WO2015024054A2 (fr) 2015-02-26
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WO2016134408A1 (fr) * 2015-02-25 2016-09-01 Brian Investments Pty Ltd Élément de fixation amovible
WO2020061719A1 (fr) * 2018-09-27 2020-04-02 Benavides Moraga Nicolas Platine/barre filetée spéciale, faisant partie d'un système de fixation pour revêtements en caoutchouc dans des broyeurs à boulets de traitement de minerais
AU2017276814B2 (en) * 2016-06-08 2023-06-15 Metso Outotec Finland Oy Wear liner assembly

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GB797581A (en) * 1953-10-12 1958-07-02 Sidney Herbert Jones Improvements relating to means for capping the heads of screws
US3220078A (en) * 1963-08-08 1965-11-30 Elastic Stop Nut Corp Rotary fastener
US3480311A (en) * 1968-06-05 1969-11-25 Entron Inc Quick-release fastener means
US4722649A (en) * 1985-02-26 1988-02-02 Northrop Corporation Releasable fastening device
US4705442A (en) * 1986-04-07 1987-11-10 Trw Inc. Quarter turn fastener
EP0431786A1 (fr) * 1989-12-04 1991-06-12 Camloc (U.K.) Limited Fixateur structurel à démontage rapide
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US5199836A (en) * 1992-04-13 1993-04-06 Gogarty Brian J T-nut
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016134408A1 (fr) * 2015-02-25 2016-09-01 Brian Investments Pty Ltd Élément de fixation amovible
AU2017276814B2 (en) * 2016-06-08 2023-06-15 Metso Outotec Finland Oy Wear liner assembly
WO2020061719A1 (fr) * 2018-09-27 2020-04-02 Benavides Moraga Nicolas Platine/barre filetée spéciale, faisant partie d'un système de fixation pour revêtements en caoutchouc dans des broyeurs à boulets de traitement de minerais

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