Apparatus for changing a wheel on a heavy vehicle

Abstract

Disclosed is an apparatus for changing a wheel on a heavy vehicle. The apparatus can comprise: a first frame having a lifting eye enabling the apparatus to be suspended from a hoist; a second frame supported by and rotatably connected to the first frame; and at least two arms attached to the second frame. At least one of the arms can be extendable in a direction away from, or toward, another of the arms to releasably secure the wheel to the second frame. When the apparatus and wheel are together suspended from the hoist, the second frame and wheel are rotatable independently of the first frame to thereby enable a user to align the wheel for mounting to the heavy vehicle.

Description

[0001] APPARATUS FOR CHANGING A WHEEL ON A HEAVY VEHICLE

[0002] TECHNICAL FIELD

[0003] This disclosure relates to an apparatus for changing a wheel on a heavy vehicle. In particular, the disclosure relates to apparatus for moving heavy, large diameter wheels of the kind used in military vehicles, armoured fighting vehicles, etc. The disclosure may also find application in fields of earth moving vehicles, aviation, etc.

[0004] BACKGROUND ART

[0005] It is to be understood that, if any prior art is referred to herein, such reference does not constitute an admission that the prior art forms a part of the common general knowledge in the art, in Australia or any other country.

[0006] Wheels for military vehicles can be difficult to change, e.g., during installation on a vehicle, etc., as a result of their weight and dimensions. For example, four to five soldiers are typically required to manually change, i.e., remove, move and install, a wheel for a military vehicle, which can weigh more than 300kg. Such wheel replacement / changing operations can take approximately thirty minutes to complete, and during that time, expose soldiers to surrounding military conflict. For this reason, quick and efficient replacement of a vehicle’s wheels is essential.

[0007] For the purposes of this specification, a wheel is understood to be an assembly of a tyre (i.e., a resilient e.g., rubber component) and a wheel (i.e., comprising a rim, barrel, lug holes, central bore, etc). A hub carrier is understood to be a component of the vehicle configured to receive and mount the wheel thereon.

[0008] To remove, move, repair and install a wheel on a military vehicle, soldiers will typically use a crowbar (or the like) to lever a casualty wheel, i.e., a wheel to be replaced, onto the ground. The soldiers can then connect a crane, e.g., of a truckmounted crane, to the wheel with straps / chains thereby allowing them to lift the casualty wheel onto the back of the truck. Multiple soldiers are required to assist in the connection of the straps / chains, guide the wheel during its movement, and stabilise the wheel during its transition onto the truck. In order to install a replacement wheel onto said vehicle, soldiers use the crane to take the replacement wheel off the back of a truck and lower it to ground level. The soldiers then manually manoeuvre the wheel into position on the vehicle: a process which requires the soldiers to lift the wheel off the ground in order to assemble it to the vehicle. Manipulating a wheel is therefore a labour- and timeintensive process, whereby soldiers involved in such a process are susceptible to personal injury.

[0009] Therefore, there is a need for an apparatus which allows for simple and efficient manipulation of a wheel for large diameter, heavy wheels.

[0010] SUMMARY

[0011] Disclosed herein is an apparatus for changing a wheel on a heavy vehicle. The wheel, as set forth below, can be an assembly of a tyre (i.e., a resilient e.g., rubber component) and a wheel (i.e., comprising a rim, barrel, lug holes, central bore, etc). The apparatus can comprise a first frame having a lifting eye enabling the apparatus to be suspended from a hoist, e.g., being connected to a crane. The apparatus can also comprise a second frame supported by and rotatably connected to the first frame.

[0012] The apparatus can further comprise at least two arms attached to the second frame. At least one of the arms, i.e., of the at least two arms, can be moveable in a direction away from, or toward, another of the arms to releasably secure the wheel to the second frame. When the apparatus and wheel are together suspended from the hoist, the second frame and wheel are rotatable independently of the first frame to thereby enable a user to align the wheel for mounting to the heavy vehicle. In one embodiment, the apparatus can comprise four arms spaced about the second frame. Two of the arms can be moveable in a direction away from, or toward, each other to releasably secure the wheel between the four arms.

[0013] The two moveable arms can be coupled about a gearbox for simultaneous movement of the arms towards or away from each other. The gearbox can be controllable by the user for selective movement of the two arms for engaging the wheel therebetween.

[0014] The first and second frames can be annular, i.e., being circular in shape and having a passage therethrough for allowing the user to access the wheel releasably secured thereat.

[0015] The first and second frame can be coupled about a slew bearing. The slew bearing can be of a type that extends about a perimeter of the first and second frames, such that the first and second frames may be rotated. When the apparatus is suspended from the hoist, the first frame can be held stationary by the hoist such that the second frame can be rotated about the first frame by the user.

[0016] The lifting eye can define an in-use upper portion of the first frame when the lifting eye suspends the apparatus therefrom. The lifting eye can be located with respect to the first frame such that when the apparatus is suspended from the hoist, an in-use lower portion of the first frame can be located at a general position vertically beneath the in-use upper portion. The lifting eye can also be located with respect to the first frame such that when the apparatus and wheel are together suspended from the hoist, the in-use lower portion of the first frame can be located at a position horizontally offset from the in-use upper portion of the first frame.

[0017] The apparatus can further comprise a lifting ring. The lifting ring can enable the apparatus to be suspended from a hoist in a horizontal orientation. The lifting ring may be pivotally connected to the first frame for moving between a stored position and a lifting position. The lifting ring in the stored position can be for suspending the apparatus such that the in-use lower portion of the first frame may be located at the general position vertically beneath the in-use upper portion such that, when the apparatus and wheel are together suspended from the hoist, the in-use lower portion of the first frame may be located at the position horizontally offset from the in-use upper portion of the first frame. The lifting ring in the lifting position may be for suspending the apparatus in the horizontal orientation.

[0018] The lifting eye may be secured to or form part of the lifting ring, such that the apparatus can be suspended by the lifting eye in either the stored position or lifting position.

[0019] Each arm of the apparatus can comprise apertures configured to releasably mount at least one strap thereto, i.e., to the arm, for restraining an in-use wheel to the apparatus.

[0020] In another embodiment, the apparatus as set forth above can comprising at least one extendable arm configured to be extendable in a direction away from, or toward, a centre of the apparatus. This may allow for accommodating differently sized wheels between the four arms. The one or more extendable arms may be provided in addition to the two moveable arms.

[0021] In some forms, two extendable arms can be provided. Each extendable arm can be configured to be extendable between discrete locations. This can allow the extendable arm to be selectively positioned away from, or toward, the centre of the apparatus.

[0022] In some forms, the two moveable arms as set forth above can further comprise respective extendable arms. The respective extendable arms of the moveable arms can be configured to be extendable between discrete locations. This can allow the extendable arms to be selectively positioned away from, or toward, the centre of the apparatus. The extendable arms may be moveable independently of the moveable arms.

[0023] The extendable arms each can comprise engagement portions as set forth above. The engagement portions can be configured to releasably secure the extension arms at the discrete locations.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Embodiments will now be described by way of example only, with reference to the accompanying drawings in which:

[0026] Fig. la is a perspective view of an apparatus for changing a wheel, the view showing a front of the apparatus whereby the apparatus is in-line for mounting about the wheel;

[0027] Fig. lb is a partial perspective view of an alternative embodiment of the apparatus for changing a wheel shown in Fig. la;

[0028] Fig. 1c is a further partial perspective view of the alternative embodiment of the apparatus shown in Fig. lb;

[0029] Fig- 2 is a perspective view showing a rear of the apparatus for changing a wheel shown in Fig. la;

[0030] Fig- 3 is a rear view of the apparatus for changing a wheel;

[0031] Figs. 4a and Fig. 4b are a sides view of the apparatus for changing a wheel; and Fig. 4c is a side view of the apparatus of Figs. 4a and 4b mounted to the wheel;

[0032] Fig. 5a and Fig. 5b are partial rear views of the apparatus for changing a wheel;

[0033] Fig- 6 is a sectional side view of the apparatus for changing a wheel, the section being taken through a mid-plane of the apparatus;

[0034] Figs. 7a-7c are front views of the apparatus for changing a wheel being rotated; Fig- 8 is a perspective view of the apparatus for changing a wheel, the apparatus mounted to a wheel being located horizontally on a ground surface;

[0035] Fig. 9a-9d are perspective views of the apparatus for changing a wheel comprising straps for restraining a casualty wheel therebetween;

[0036] Fig. 10 is a perspective view of the apparatus for changing a wheel as part of a kit; and

[0037] Fig. Ila is a perspective view of an alternative embodiment of the apparatus for changing a wheel;

[0038] Fig. 11b is a detailed perspective view of an arm of the alternative embodiment shown in Fig. I la;

[0039] Fig. 11c is a detailed perspective view of another arm of the alternative embodiment shown in Fig. I la;

[0040] Figs. 12a-12c show a further alternative embodiment of the apparatus for changing a wheel, where; Fig. 12a is a perspective view of the apparatus mounted to a wheel in an in-use, vertical orientation; Fig. 12b is a detailed perspective view of a lifting bracket shown Fig. 12a; and Fig. 12c is a perspective view of the apparatus mounted to a wheel in an in-use, horizontal orientation.

[0041] Fig. 13a is a perspective view of another form of the alternative embodiment shown in Fig. 11 a- 11c;

[0042] Fig. 13b is a detailed perspective view of an arm of the alternative embodiment shown in Fig. 12a; and

[0043] Fig. 13c is a detailed perspective view of another arm of the alternative embodiment shown in Fig. 13a. DETAILED DESCRIPTION

[0044] In the following detailed description, reference is made to accompanying drawings which form a part of the detailed description. The illustrative embodiments described in the detailed description and depicted in the drawings are not intended to be limiting. Other embodiments may be utilised and other changes may be made without departing from the spirit or scope of the subject matter presented. It will be readily understood that the aspects of the present disclosure, as generally described herein and illustrated in the drawings can be arranged, substituted, combined, separated and designed in a wide variety of different configurations, all of which are contemplated in this disclosure.

[0045] Referring to Figure la, an apparatus 10 for changing a wheel 12 on a heavy vehicle is shown. In the view shown, the wheel is positioned in-line for mounting (i.e., securing) to the apparatus 10, the wheel being of a type used on military vehicles. In particular, the wheel shown is for use on a ‘Boxer CRV’ military vehicle. The wheel changing apparatus 10 comprises a main body 14 having a first frame 14a rotatably connected to a second frame 14b; and four arms 16a to 16b attached thereto for holding the wheel 12 therebetween. The apparatus is configured for being suspended from a hoist about a lifting bracket 17 provided in the first frame 14a during a wheel-changing operation. In the embodiment shown, the lifting bracket 17 comprises a lifting eye 17a formed by a D-shackle passing through an aperture 15 in the lifting bracket 17.

[0046] In alternative embodiments not shown, the aperture itself (i.e., passing through the bracket 17) can form the lifting eye, whereby a lifting strap or hook from a crane can pass through the aperture for suspending the apparatus therefrom. Other alternatives to enable the first frame 14a of the apparatus to be suspended from a crane would be readily apparent to a person skilled in the art. As such, for the purposes of this specification including the claims, the phrase “lifting eye” is to be understood broadly to encompass any structure or configuration defining a predetermined point on or relative to the first frame 14a to be suspended from a crane, hoist or the like.

[0047] Each of the first and second frames of the main body are annular in shape, generally corresponding to the wheel 12. As set forth in more detail later, the annular shape of the main body, when mounted to a wheel, aligns with the shape of the wheel such that a central bore 12a, i.e., a central portion, of the wheel is accessible through an annular passage 15 of the main body 14.

[0048] As best shown in Fig. 2, the four arms are attached to a face of the second frame 14b, whereby two of the four arms are configured as fixed arms 16a, 16b; and the other two of the four arms are configured to be adjustable, i.e., moveable arms 16c, 16d for releasably securing the wheel 12 to the apparatus 10, i.e., being secured between the four arms 16a to 16b. In other words, the moveable arms can be moved into and out of engagement of the with the wheel 12, as will be set forth in more detail later.

[0049] Each of the four arms are arranged about the second frame 14b to be in a generally opposing relation to each other. As best shown in Fig. 3, the fixed arm 16a is arranged to be generally diagonally opposite to the moveable arm 16d, and the fixed arm 16b is arranged to be generally diagonally opposite to the moveable arm 16c.

[0050] Referring now to Fig. 2, each of the four arms are configured as ‘jaws’, i.e., being generally ‘L-shaped’, having first and second arm-portions 22, 24 arranged to be generally perpendicular to each other. The jaws are mounted with respect to the second frame 14b such that the first arm-portion 22 is oriented to project radially outward from the second frame and the second arm-portion 24 projects laterally away from the second frame 14b. As best indicated in Fig. 3 by dotted lines Wl, W2, this orientation of the ‘L-shape’ of the jaws generally delineates a space between the jaws for receipt of the wheel 12. In this regard, the arrangement of the jaws configures the apparatus as a kind of ‘claw’ for securing, i.e., clutching, grabbing, etc., the wheel therebetween. Each of the four arms are configured to grip a tread surface of the wheel about the second arm-portion 24. In the form shown, the second arm-portion 24 of the two fixed arms 16a, 16b are provided with ‘teeth’ 26 to engage the wheel tread when secured in place between said fixed arms 16a, 16b and opposing moveable arms 16c, 16d. The teeth 26, in-use, project approximately radially from the second arm-portion so as to engage the wheel by pressing against the tread of the wheel (i.e., the tread of the tyre).

[0051] Each of the moveable arms 16c, 16d are provided with rollers 28, i.e., sleeves, to aid the moveable arms 16c, 16d receiving the surface of the wheel 12 thereon. In some form, the rollers 28 may be sleeves ‘rollable’ about a shaft, or alternatively, supported on roller bearings for reducing rotational resistance. In either form, and as set forth in more detail later, the rollers 28 permit the wheel to laterally slide past the roller 28 when the apparatus 10 is being mounted about the wheel 12.

[0052] The two moveable arms 16c, 16d are each configured to move away from (i.e., into an ‘open’ position of the arms), and towards each other (i.e., into a ‘closed’ position of the arms) such that a user of the apparatus can adjust the distance between the second arm-portions 24. As best shown in Fig. 3, the arms 16c, 16d are arranged with respect to each other such that respective second arm-portions 24 of each arm 16c, 16d are aligned about their elongate length. In the orientation of the apparatus shown in Fig. 3, the arms 16c, 16d are in a mirror-opposite arrangement about an imaginary plane through a centre of the annular main body 14. As set forth in detail below, the moveable arms 16c, 16d are coupled together about their elongate length, i.e., about their first arm-portions 22 so that the arms 16c, 16d can be move together, i.e., simultaneously, away from, or towards each other (i.e., between open and closed positions) for engaging the wheel 12 therebetween.

[0053] The two moveable arms are arranged with respect to a tangential gearbox 30 for being moved towards and away from each other. The gearbox 30 is mounted about the second frame 14b and receives the first arm -portions 22 of each moveable arm 16c, 16d within a housing assembly 32 of the gearbox 30. The first arm-portions 22 are moveably mounted to the gearbox 30 as set forth below.

[0054] The tangential gearbox 30 comprises a threaded shaft (not shown) mounted transversely inside the housing assembly 32, and extending between both arms 16c, 16d. One end of the threaded shaft is connected to a user-control point 34 (see Fig. la) accessible to the user through the housing 32. The user-control point may be a nut accessible to the user, whereby e.g., a power drill (i.e., a ‘nutrunner’) can be fitted thereto with a corresponding socket-bit for rotating the nut, i.e., the threaded shaft.

[0055] The first arm-portion 22 of each arm 16c, 16d comprises a slider (not shown) slidably coupled to the threaded shaft by a drive nut (not shown). The drive nuts of each arm 16c, 16d are threaded in opposite directions such that, that when threaded shaft extending between the arms 16c, 16d is rotated by the user (through the user-control point 34), the drive nuts will either move toward each other or away from each other depending on the direction of rotation of the threaded shaft. As a result, the arms 16c, 16d will be moved, i.e., towards or away from each other, in the same direction as their associated drive nut. In effect, this allows the user to control engagement or disengagement of the arms, i.e., their teeth 26, with the wheel 12.

[0056] Coupling the moveable arms 16c, 16d for translation about a single axis, i.e., about the elongate length of the second arm-portions, provides a simple and robust mechanism for adjusting the position of both arms. Advantageously, this can minimise the risk of failure (i.e., compared to having a separate mechanism for both arms 16c, 16d). Furthermore, the tangential gearbox provides a single control point for quickly moving the arms between open and closed positions.

[0057] Referring now to Fig. 5a and Fig. 5b, the moveable arms 16c, 16d are shown in respective opened and closed positions. Referring to Fig. 5a, it can be seen that arms 16c, 16d in the open position are spaced from a centre-line ‘C’ of the apparatus 10 by a distance C2. As shown in Fig. 5b, the arms 16c, 16d in the closed position are spaced from the centre-line by a distance Cl. Accordingly, moving the arms towards each other from the open to the closed position reduces the distance therebetween so as to close the arms, i.e., rollers 28 attached thereto into engagement with a wheel (indicated by dotted-lines) located therebetween.

[0058] The moveable arms 16c, 16d can also be moved to accommodate variations in wheel size / diameter. This may include wheels of different type, i.e., being of a different diameter to suit different vehicles, and also different magnitudes of inflation. For example, wheels may be in a fully inflated state, partially inflated state, or as set for previously, damaged such that the tyre is misshaped, and the moveable arms need to be brought closer to, or further from the tyre in order to contact said tyre.

[0059] In some forms, spacer blocks (not shown) may be provided for accommodating wheels of a particularly small diameter. For example, in situations when the arms 16c, 16d are unable to close by a sufficient distance to engage with a wheel. Such spacer blocks may be positioned between said wheel and one or more of the second end-portions 24 of the arms 16a-16d for filling the space about which the arms are unable to move so as to engage with the wheel tread.

[0060] In a further embodiment of the present apparatus, and as set forth in more detail later (i.e., in relation to Figs. 1 la-11c), the two fixed arms 16a, 16b may be provided as extendable arms 116a, 116b. In this embodiment the extendable arms 116a, 116b can be repositioned to suit a diameter of a wheel to be held by the apparatus 10, e.g., wheels of different type and dimension.

[0061] Referring again to Figs, la and 2, the lifting backet 17, in the form shown, is provided as generally ‘L-shaped’ bracket mounted to the first frame 14a and configured to extend both laterally and radially away from the first frame (i.e., extending laterally in a direction defined by a central axis of the annular first frame and in a radial direction defined by the annular first frame). In other forms (not shown) the lifting eye may be an aperture or an eye-bolt fastened to one of the first frame 14a. In an alternative embodiment shown in Fig. lb, the lifting bracket 17 can be arranged as an ‘inverted L-shaped’ bracket. In this form, the bracket 17 can be mounted to the first frame 14a and configured to extend radially away from the first frame (i.e., extending, firstly, in a radial direction defined by the annular first frame) before extending laterally toward the second frame 14b (i.e., extending, secondly, towards the second frame in a direction defined by a central axis of the annular first frame).

[0062] As shown in Fig. la, the lifting backet 17 is mounted about the first frame 14a such that the bracket is at least partially internalised within the first frame. In this form, a part of the bracket mounted to the frame is able to sit flush with an outer surface 14c of the first frame. Advantageously, this can minimise ‘catch-points’ i.e., projections, that extend from the apparatus 10 which can potentially catch or otherwise interfere with movement / articulation of the apparatus in-use.

[0063] By comparison, the embodiment of the bracket 17 shown in Fig. lb provides the bracket 17 in an externally mounted configuration. In this form, at least part of the bracket protrudes outside the first frame 14a.

[0064] The lifting bracket 17 in either form of the bracket shown in Fig. la or Fig. lb mounted to the first frame 14a, is positioned away, i.e., spaced behind, the arms 16a, 16b to provide a clearance between the lifting eye and the wheel arch or body of the vehicle subject to the wheel-changing operation. In-use, this position of the lifting bracket 17 locates, i.e., ‘recesses’ the lifting eye 17a inwards of the main body, i.e., being generally central of the apparatus. Advantageously, this positions a suspension / lifting point 17a of the hoist ‘into’ the main body of the apparatus such that ‘pinch points’, i.e., contact between the lifting eye / hoist and other objects are removed.

[0065] When the lifting bracket 17 is mounted to a hoist for suspending the apparatus about the lifting eye 17a, the lifting eye 17a (and bracket 17) define an in-use upper portion of the first frame. In this orientation of the apparatus, i.e., a ‘vertical’ orientation, the fixed arms 16a, 16b may be referred to as ‘upper arms 16a, 16b’, being located above the moveable arms 16c, 16d, i.e., being relative ‘lower arms 16c, 16d’ of the apparatus.

[0066] Referring now to Figs. 4a to 4c, the lifting eye 17a is positioned about the bracket 17 such that, when the apparatus is suspended, i.e., held in the vertical orientation, the upper arms (and upper portion of the first frame) are positioned (generally) vertically above the lower arms. This suspended orientation of the apparatus is shown in Fig. 4a and allows the apparatus (and its arms) to receive a wheel therewithin when said wheel is orientated in an upright position (e.g., when the wheel is mounted to a vehicle).

[0067] When the apparatus is suspended in the vertical orientation, lower arms 16c, 16d (and rollers 28) are arranged for being moved underneath the wheel 12 and the upper arms are arranged in a position over the wheel 12.

[0068] Referring now to Fig. 4c, the position of the lifting eye 17a may be arranged such that, when the wheel 12 is secured by the apparatus (about the arms 16a-16d) and subsequently suspended therefrom, the weight of the wheel moves a centre of gravity of the apparatus 10 relative to its point of suspension 17a. In effect, the wheel and the apparatus together (i.e., when suspended together) are moved into an inclined orientation, whereby the lower arms 16c, 16d are located in a horizontally offset position relative to the upper arms 16a, 16b. In other words, the wheel secured and suspended by the apparatus will naturally hang at an angle 12 to vertical, whereby the upper arms are positioned forward of the lower arms (i.e., the upper arms are positioned closer to the vehicle subject to the wheel-change, and the lower arms hang further away from said vehicle than the upper arms).

[0069] Referring now to Fig. 4b, in some forms of the apparatus, the lifting eye may be configured such that the point of suspension 17a is arranged such that the apparatus itself, i.e., without a wheel mounted thereon, can be suspended in a slightly inclined orientation, i.e., at an angle II to vertical. That is, the lower arms 16c, 16d naturally hang (slightly) away from the vehicle (subject to the wheelchange) compared to the upper arms (which hang (slightly) closer to said vehicle). Advantageously, arranging the apparatus 10 to incline to the vertical orientation (whether by itself, or when the apparatus is suspended together with a wheel) aids in the wheel-changing operation. In the case of the apparatus by itself, when the apparatus is suspended from a hoist for the action of removing a wheel form a vehicle, as the apparatus is moved towards said wheel, the upper arms 16a, 16b are able to contact the wheel before the lower arms 16c, 16d. Advantageously, this allows the user (i.e., operator) of the apparatus to position the upper arms in a correct location relative to the wheel before the apparatus is further moved into a position whereby the lower arms may be adjusted (i.e., about the gearbox 30) to engage the wheel.

[0070] Similarly, when the apparatus is suspended together with a wheel, the wheel is inclined to the ground as it is moved by the apparatus towards the vehicle hub carrier (for being mounted thereto). The central portion of the suspended wheel is orientated such that an upper portion of the central portion (i.e., the lug holes for receiving fasteners (i.e., studs) therethrough) contact a corresponding upper portion of the vehicle hub carrier (i.e., the fasteners for receipt said apertures). Advantageously, this allows the upper lug holes to be aligned with the corresponding upper fasteners of the hub carrier, before the remaining lug holes are moved over the lower fasteners of the hub carrier.

[0071] Referring now to Fig. 6, the first and second frames 14a, 14b are rotatably connected, i.e., coupled, together to aid orientation of the wheel when suspended by the apparatus. The rotatable connection may be provided by a bearing assembly (i.e., an array of bearings 36) arranged between the frames 14a, 14b, and configured to allow the second frame 14b to freely rotate with respect to the first frame 14a, when the first frame is suspended, i.e., fixed, about the lifting eye 17.

[0072] It should be appreciated that the first and second frames are also rotatable relative to each other when the apparatus is not suspended. For example, when the apparatus is resting on a surface, e.g., laying horizontally on a truck bed, a ground surface, etc., and the second frame is held in a fixed position by e.g., by its own weight or by a wheel secured thereunder, the first frame may be freely rotated with respect to the second frame for e.g., aligning the lifting eye with a hoist.

[0073] As shown in the sectional view of Fig. 6, the first and second frames 14,14b are coupled with respect to each other such that the annular second frame 14b is connected (i.e., about bearings 36) with respect to an inside (i.e., an inner circumference) of the annular first frame 14a. More specifically, a bearing assembly containing said bearings 36 comprises a flange 38 projecting laterally (i.e., in a direction defined by the annular central axis) from the second frame 14b. An opposing flange 40 of the bearing assembly is configured to project from the first frame 14a towards the flange 38 and is coupled thereto about said bearings 36. In the form shown, the bearing assembly (as set forth above) is configured as a slew bearing, allowing the second frame 14b to ‘slew’ about the first frame 14a. Such a bearing type optimally supports the vertical loads applied between the first and second frames by the wheel.

[0074] Handles 42 are mounted to the second frame 14b for allowing the user to rotate the second frame with respect to the first frame (when the first frame is suspended). The handles 42 are configured to pass from their mounting at the second frame, through the annular passage 15 of the main body, i.e., through the first frame 14a, so that the user (positioned on an opposing side of the apparatus, i.e., a side opposing a wheel mounted thereon) can rotate the second frame. This allows the user to be spaced away from the wheel when manipulating its position. Advantageously, this aids in providing the user with a safe working distance from wheel.

[0075] Referring now to Figs. 7a to 7c, the slew bearing of the apparatus 10 allows for 360 degree rotation of the second frame 14b with respect to the first frame 14a. As set forth above, the handles 42, being mounted to the second frame, enable the user to rotate the second frame, i.e., the arms 16a-16d move together with the handles 42, independently of the first frame, i.e., when the first frame is in a fixed position (being suspended by a hoist). Through all of the 360 degrees of rotation, a user is able to access a wheel mounted to the apparatus through the annular passage 15. Three exemplary rotational positions of the second frame 14b (with respect to the first frame 14a) are shown in Figs. 7a to 7c, where: Fig. 7a shows the second frame 14b at a theoretical zero degrees of rotation, i.e., whereby the fixed arms are positioned centrally about a vertical axis ‘Z-Z’, such that when the apparatus is suspended, the arms are positioned generally above an upright wheel (indicated by dotted-outline); Fig. 7b shows the second frame rotated through an angle Al of approximately 45 degrees from the zero degree orientation of the apparatus shown in Fig. 7a; and Fig. 7c shown the second frame rotated through an angle A2 of approximately 90 degrees from the zero degree orientation of the apparatus shown in Fig. 7a.

[0076] Furthermore, the passage 15 through each of the first and second frames allows the user to access components of the wheel mounted thereon, e.g., the central bore, lug holes, etc. Advantageously, this allows the user to visually assess the rotational orientation of the wheel prior to mounting the wheel to a vehicle. This allows the user to align the lug holes with the corresponding fasteners of the hub carrier, and also to align a Central Tyre Inflation System (CTIS) of the wheel with the vehicle.

[0077] Furthermore, and as set forth previously, when the user is required to mount the wheel log holes about the fasteners of the vehicle’s hub carrier, the passage 15 allows the user access through the apparatus so as to fasten the wheel to the hub carrier.

[0078] The apparatus 10 may further comprise a lifting ring 44 configured for suspending, i.e., lifting, the apparatus in a horizontal orientation. As best shown in Fig. 8, the lifting ring may also be used for suspending the apparatus together with a wheel (engaged thereat) in the horizontal orientation.

[0079] The lifting ring 44 finds particular use when the apparatus 10 requires lifting, i.e., suspension from a horizontal position. For example, when the apparatus is laying on a truck bed, or on a ground surface (without a wheel attached thereto). The lifting ring 44 comprises a connection point 46 for connecting with a hoist for suspension therefrom. The lifting ring is configured as a semi-circular, annular plate, pivotally connected about the face the first frame 14a by hinges 48. The lifting ring 44 is pivotable about said hinges 48 for moving from a stored position (best shown in Fig. la, where the lifting ring 44 is arranged generally flat against the first frame 14a) to a lifting position (as shown in Fig. 8, where the lifting ring 44 is orientated generally perpendicular to the first frame 14a).

[0080] When the lifting ring 44 is in the stored position, it may be releasably connected to the first frame 14a by e.g., a fastener 50. In the stored position, the lifting ring 44 is prevented from moving, being secured from pivoting about its hinges.

[0081] Upon release of the fastener 50, the lifting ring 44 is allowed to be lifted outward into the orientation shown in Fig. 8 when attached to, and suspended by, a hoist at the connection point 46. As set forth in more detail below, the lifting ring 44 allows the apparatus 10 to be transported itself (in the horizontal orientation), and to also transport a wheel attached thereto in a horizontal orientation.

[0082] Advantageously, the lifting ring 44 allows a user to set the orientation (i.e., rotation about a central axis of the wheel) of the apparatus relative to the CTIS of the wheel prior to presenting the wheel 12 to the hub carrier of the vehicle.

[0083] Referring now to Fig. 9a-9d, the apparatus 10 may be configured for use with one or more straps 49 to restrain a wheel mounted thereon. The straps 49 may be attached with respect to the second end-portions 24 of the arms by D-shackles 51. The D-shackles may be attached to the arms about apertures 24a (see Figs, la and 2) in the second end-portions 24.

[0084] It should be appreciated that other forms of attachment are possible, e.g., other than D-shackles. For example, the aperture in the second end-portions of the arms can themselves be used for hooking e.g., a hook, fixed to an end of the strap(s) 49. In further forms, the apertures may be configured to such that the straps 49 may simply pass through the apertures for mounting at the second ends-portion (i.e., without the need for D-shackles). As best shown in Figs. 9c and 9d, the arms 16d, 16c can each additionally or alternatively comprise ratchets 53 for receiving and adjusting a length of the strap(s) 49. In the form shown, the ratchets 53 are mounted at a sidewall 24b of the end-portions 24.

[0085] The straps 49, when attached at the arms, can be arranged to pass, i.e., connect, between opposing arms 16a- 16c, across a wheel located therebetween, for restraining the wheel to the apparatus, i.e., restraining the wheel between opposing arms 16a- 16c.

[0086] As best shown in Figs. 9b and 9c, two straps 49 are arranged to connect between adjacent arms 16b, 16d and 16a, 16c, so as to pass across / over opposing sides of the wheel 12 located thereon. In other words, the two straps 49 are arranged to generally ‘run alongside’ each other, whereby a first strap passes between arm 16b and arm 16d to secure about a first side of the wheel; and a second strap passes between arm 16a and 16c to secure about a second (opposing) side of the wheel.

[0087] In alternative forms not shown, other arrangements of the straps may be used to restrain the wheel. For example, the straps 49 may be diagonally arranged, i.e., to cross each other about a central region of the wheel / apparatus. In this case, the first strap would connect between arms 16b and 16c, and the second strap would connect between arms 16a and 16d. In further alternatives, a single strap may be used to pass diagonally between arms, e.g., arms 16a and 16d, such that only the single strap secures the wheel to the apparatus. In other forms again, a single strap may be used to pass through all four of the arms in either of the parallel or diagonal arrangements set forth above.

[0088] The straps 49 find particular use for casualty wheels that cannot hold sufficient pressure for clamping by the teeth 26 and rollers 28 alone. That is, wheels that would collapse (i.e., have insufficient resilience) under the clamping pressure applied by the arms can be robustly held in the apparatus by the straps. The strapping can thereby provide a secondary support means for securing the wheel to the apparatus. In some use-cases, when the wheel may at least be partially able to be clamped by the arms, the straps may provide an additional means for securing the wheel. In other use-cases, the straps may be utilised as the only means of securing a wheel to the apparatus, e.g., where the casualty wheel is significantly damaged such that the arms are unable to apply any clamping pressure. In this case, the arms of the apparatus may act as a barrier / boundary surrounding / encapsulating the casualty wheel, i.e., preventing it moving from side-to-side.

[0089] In an alternative embodiment, each of the four arms 16a-16d may be fitted with spikes 19 for providing additional traction between the arms (i.e., the teeth 26 and rollers 28 thereof) and the wheel mounted therebetween. As shown in Figs, la and 1c, the spikes 19 extend through at least part of the second-end portions 24 of the arms.

[0090] The spikes may be formed from a threaded bar and configured to mount about the apertures 24a provided in the second end-portions 24 of the arms. The spikes may be mounted thereat by a fastener, i.e., a nut (or alternatively, by a thread provided in the aperture 24a). The spikes 19, when mounted at the arms, can be driven (i.e., pressed) through the tread of the wheel 12 so as to prevent the wheel from moving laterally away from its position between the arms.

[0091] The spikes 19, as set forth above, find particular use for casualty wheels that cannot hold sufficient pressure for clamping by the teeth 26 and rollers 28 alone. That is, wheels that would collapse under the clamping pressure applied by the arms, can be robustly held in the apparatus by the spikes.

[0092] Referring now to Fig. 10, the apparatus 10 may be provided as a kit 52. The kit can comprise the apparatus 10, a pallet 54 configured to receive and releasably secure the apparatus 10 thereon, a toolbox 56 for storing Complete Equipment Schedule (CES) components, and other CES components (not stored in the toolbox).

[0093] The apparatus can be transported and stored on the pallet, which is specifically designed to accommodate the shape of the apparatus. In the form shown in Fig. 10, the pallet can be configured to support the apparatus about a support structure 60 having an arrangement of pads 62 for receiving the apparatus 10 thereon. The pads 62 may be formed of a polymer, e.g., polypropylene, or other suitable polymer for minimising damage to the apparatus when stored thereon.

[0094] The pallet may further be configured for housing the toolbox 56. As shown in Fig. 10, the pallet can be configured to receive the toolbox centrally with respect to the apparatus received thereon. The toolbox can be dust-proof and water-proof for storing various tools, e.g., the nut-runner, lifting straps, spikes, and socket set (i.e., a ‘Complete Equipment Schedule’) for operation of the apparatus 10 as set forth above.

[0095] The pallet may also be configured for storing other components of the CES not stored in the toolbox 56. As indicated by reference 58, the pallet can also store a wheel and tyre assembly chock to enable the positioning and unloading of the wheel and tyre assembly; and a pneumatic jack to lift a suspension station of a casualty vehicle. The pneumatic jack can be powered by a compressed air supply onboard the recovery vehicle.

[0096] Referring now to Figs. 1 la to 11c, a further embodiment of the apparatus is shown. Like reference numerals denote similar or like parts to Figs. 1 to 10, with the addition of 100 to distinguish between embodiments. The further embodiment of the apparatus 110 primarily differs from the apparatus 10 by extendable arms 164a-164d. The extendable arms 164a-164d are configured to be repositionable relative to the moveable arms 116d, 116c, in order to accommodate differently sized wheels therebetween.

[0097] In the form shown in Figs. 1 la-11c, the extendable arms 164a-164d comprise first and second arm-portions 122, 124. Each first arm portion 122 is slidable about, i.e., within, a fixed sleeve 166. The extendable arms 164a, 164b are slidable about fixed sleeves 166 mounted to the second frame 114b of the apparatus 110. The extendable arms 164c, 164d are slidable about sleeves 116 formed in respective moveable arms 116c, 116d. In the form shown, the sleeve 166 and first arm portion 122 are each formed of square sections, however, other profiles may be utilised.

[0098] The extendable arms 164a-164d are orientated with respect to a centre ‘C’ of the apparatus. That is, the arms 164a-164d are each aligned with the centre ‘C’ such that, when a wheel is located between the four arms 164a-164d, the extendable arms 164a-164d can apply a radial (i.e., central-acting) load to the wheel (when the moveable arms 116c, 116d are closed onto the wheel). In the form shown, the arms 164a- 164b are angled with respect to the centre by ~ 60 degrees and the arms 164c-164d are angled with respect to the centre by ~ 60 degrees. However, other angles are anticipated.

[0099] It is noted that, while the extendable arms 164c, 164d of the moveable arms 116c, 116d may be aligned with the centre of the apparatus, moving the moveable arms between their opened and closed positions can move the extendable arms slightly out of alignment with the centre of the apparatus. However, it is intended that when the moveable arms are brought into contact with an in-use wheel, the arms 164c, 164d are generally aligned with the centre of the apparatus.

[0100] The first arm portion 122 comprises engagement portions 170 arranged along its elongate length. In the form shown, the engagement portions are provided as spaced apertures 170. The sleeve 166 also comprises an arrangement of correspondingly sized and spaced apertures 170 such that, when the first arm portion 122 is positioned within the sleeve to align the respective apertures, a pin 172 (e.g., a bolt) can be inserted therethrough for securing the extendable arm 164a-164d in a locked / secured position. In this way, the extendable arms 164a- 164d can be releasably secured at discrete locations with respect to the sleeve 166 and, in turn, a centre of the apparatus 110.

[0101] In use, the extendable arms 164a-164d can be positioned closer to the centre of the apparatus for receiving smaller wheels therebetween. Conversely, the arms 164a-164d can be repositioned further away from the centre to allow a relatively larger diameter wheel to be received therebetween. Such repositioning of the arms 164a-164d is intended to be performed before the apparatus is positioned onto a wheel, i.e., before the ‘method of operation’ set forth above is undertaken. However, it is anticipated that the extendable arms 164a-164d may be repositioned during operation of the apparatus, e.g., after step 3., set forth above.

[0102] Advantageously, allowing each of the four arms 164a-164b to the adjustable allows the apparatus 110 to accommodate a wider range of wheel sizes. For example, the four arms 164a- 164b can adjusted to accommodate a wheel size between ~1185mm to 1370mm. This range of adjustability can allow the apparatus 210 to accommodate a majority of wheel sizes utilised by e.g., the Australian army vehicle fleet.

[0103] For example, once the apparatus 110 is lifted by a crane and brought close to a casualty wheel, the extendable arms 164a-164d may be repositioned according to the required diameter of the wheel, prior to moving the moveable arms 116c, 116d into contact with the wheel. This may be particularly useful in situations where the casualty wheel is damaged, and the extendable arms 164a-164d may need to be moved inwardly to accommodate deformities in the wheel.

[0104] Referring now to Figs. 12a-12c and 13a-13c, yet a further embodiment of the apparatus is shown. Like reference numerals denote similar or like parts to Figs. 1 to 11, with the addition of 200 to distinguish between embodiments. The further embodiment of the apparatus 210 primarily differs from the apparatus 10, 110 by lifting ring 244. The lifting ring 244 can be utilised for lifting the apparatus 210 in either vertical or horizontal orientations, as respectively shown in Figs 13a and 13c. Accordingly, the lifting ring 244 can replace the lifting bracket 17, as set forth in more detail below.

[0105] As best shown in Fig. 13b, the lifting ring 244 is configured to comprise lifting bracket 217, i.e., instead of the lifting bracket 17 being mounted to the first frame 214a, as set forth previously. The lifting bracket 217 can replace, i.e., be located in place of, the connection point 46 as set forth previously. In effect, the lifting bracket 217 (and the lifting eye 217a thereof) performs the same function as the connection point 46, i.e., to connect and lift the apparatus 210 (and wheel 12) in the horizontal orientation (as shown in Fig. 13b).

[0106] The lifting ring 244 can be further configured such that, when secured in the stored position, i.e., when arranged generally flat against the first frame 214a, the lifting bracket 217 can function in the same way as the lifting bracket 17 as set forth previously. That is, the lifting bracket (via the lifting eye 217a) can be utilised to lift the apparatus 210 in a vertical orientation (as shown in Fig. 13a).

[0107] Advantageously, by combining the lifting ring 244 with the lifting bracket 217, the lifting ring can be used for both functions: lifting the apparatus 210 in a horizontal or vertical orientation.

[0108] The first frame 214a of the apparatus can comprise a cut-away portion 274, as best shown in Fig. 13 c, configured to receive at least a portion of the lifting ring 244 when arranged in the stored position. A lifting ring pin 276, e.g., a clevis pin, can be utilised for securing the lifting ring 244 in the stored position, whereby an aperture extending through both the lifting ring 244 and first frame 214a can receive the pin 276 therethrough. In use, when the lifting ring 244 is moved from the lifting position into the stored position and is received in the recess 274, the apertures of the lifting ring and first frame can align so that the lifting ring pin 274 can be received, i.e., slid, through the aligned apertures.

[0109] The lifting ring pin 274 may be secured in location between the lifting ring and the first frame by one or more retention features. In a first form of the retention feature, a split pin 278 e.g., an R-clip, can be inserted through an end of the lifting ring pin 274 to prevent the lifting ring pin from sliding out from the aperture in- use.

[0110] In a second form of the retention feature, a transverse pin 280 can be inserted into a transvers aperture 282 of the first frame 214a for preventing the lifting ring pin 274 from sliding out the aperture. In effect, the transverse pin 280 blocks a path of the lifting ring pin 274 from its location through the first frame and the lifting ring In a third form of the retention feature, the lifting ring pin 274 and the apertures of the first frame and lifting ring may be configured, i.e., profiled such that, in-use, when the lifting bracket 217 is connected to and raised by e.g., a crane, the lifting ring pin bears against the first frame and lifting ring such that it (i.e., the lifting ring pin) cannot move therefrom. That is, the loading applied to the lifting ring pin 274 during a lifting process locks the pin 274 in place.

[0111] Referring now to Fig. 12a and 12c, the further embodiment of the apparatus 210 can further differ from previous embodiments 10, 110 in that ratchet(s) 253 can be located centrally of the end-portions 224. The ratchet(s) 253 can be positioned between opposing sidewalls 224b. Advantageously, this can protect the straps 249 by containing the straps between the sidewalls 224b, limiting contact of the strap with e.g., abrasive surfaces, etc that may damage the strap.

[0112] The apparatus 210 can further comprise apertures 224c formed in second frame 214b. The apertures 224c can be sized to receive a shackle 225 (or hook, etc) for connecting to an end of strap(s) 249 when securing a wheel 12 thereat (as set forth previously). The location of the aperture 224c is closer to a centre ‘C’ of the apparatus when compared to the apertures 24a provided on the arms 224 (see Fig. la). This position of the apertures 224c allows the strap(s) 249 to pass across / over opposing sides of the wheel 12, closer to the centre C than straps connected about apertures 24a (as shown in Fig. 9). Advantageously, this can improve retention of smaller wheels when mounted on the apparatus, the straps crossing the wheel surface closer to a centre of the wheel.

[0113] Method of Operation

[0114] The apparatus 10, 110, 210 as set forth above, can be utilised for changing a wheel 12 (and tyre assembly) as described hereafter.

[0115] 1. Attach a crane or lifting device to the D-shackle, i.e., lifting eye 17a, 117a, 217a of the apparatus 10, 110, 210 and raise the apparatus off the back of e.g., a recovery vehicle. This can also be accomplished using the lifting ring 44, 244. Once the apparatus 10, 110, 210 has been removed from the recovery vehicle (i.e., moved to a ground surface). In some embodiments of the apparatus, e.g., apparatus 10, 110, the lifting device can be disconnected from the lifting ring 44 and connected to the lifting eye 17a, 117a for subsequent steps (set forth below) of changing an orientation of the apparatus from the horizontal position (on the ground) to a vertical position (for presenting to a casualty wheel). The lifting ring 44 should be locked / secured in the stored position before proceeding to lift the apparatus vertically. In other embodiments of the apparatus, e.g., apparatus 210, the lifting ring may be lowered into the stored position and secured thereat by the lifting ring pin 276.

[0116] 2. The user-control point 34 can be accessed by a user for opening the moveable arms 16c, 16d, 116c, 116d, 216c, 216d of the apparatus 10, 110, 210. The control point 34 may be controllable by e.g., a nut-runner, for driving the tangential gearbox 30 for operating the arms 16c, 16d, 116c, 116d, 216c, 216d. The nut-runner can be operated to move the arms into the open, i.e., ‘fully’ open, position. This position of the arms can be indicated on the second frame 14b, 114b, 214b of the apparatus 10, 110, 210.

[0117] 3. For apparatus 110, 210 wherein the moveable arms 16c, 16d, 116c, 116d, 216c, 216d and extendable arms 164a- 164b, 264a-264b are all slidable about their respective fixed sleeves 166. For each of the extendable arms, their respective pins 172, 272 can be removed so that each arm can be adjusted into an outermost position, i.e., so that a distance between opposing arms is maximised. Alternatively, the arms can be extended apart to suitably match a diameter of a wheel to be received therebetween. In either case, the pins 172, 272 can be optionally reinstalled before the following steps.

[0118] 4. The user can manipulate the apparatus 10, 110, 210 (being in a suspended orientation) so as to present the arms to the casualty wheel and tyre assembly (i.e., the wheel subject to being changed). The user can further manipulate the suspended apparatus to align the upper arms 16a, 16b, 164a, 164b, 264a, 264a with the wheel. As set forth previously, the apparatus is configured such that the upper arms will engage the wheel first (i.e., before the respective lower arms 16c, 16d, 164c, 164d, 264c, 264d).

[0119] 5. The crane is to be operated for lowering the apparatus onto the wheel and tyre assembly. At this stage, the apparatus will rest on a face of the wheel and tyre assembly in the vertical orientation.

[0120] 6. The user is to adjust a location of the extendable arms 164a-164d, 264a- 264d to suit the diameter of the wheel received therebetween. The pins 172, 272 can be reinstalled to secure the arms 164a-164d, 264a-264d in the desired location.

[0121] 7. The user is to operate the nut-runner for moving the movable arms 16c, 16d, 116c, 116d, 216c, 216d into a closed position, i.e., to engage the moveable arms with the wheel (an indication of such a position is marked on the apparatus for the user to reference).

[0122] 8. In a situation where the casualty wheel is damaged such that the arms are unable to retain / hold the wheel for lifting, the one or more straps 49, 149, 249 (set forth above) may be utilised. The straps may be attached with respect to the arms 16a-16d, 116a-l 16d, 216a-216d as set forth previously, whereby the straps are fed behind the wheel (i.e., while the wheel is still engaged with the hub carrier of the vehicle) and then tightened about the wheel by e.g., ratchet(s) 53, 153, 253.

[0123] 9. Wheel nuts (i.e., of the hub carrier) can now be removed, and the wheel and tyre assembly can be subsequently removed, i.e., lifted away from the vehicle using the crane.

[0124] 10. After the casualty wheel and tyre assembly are removed, the assembly can be lowered to the ground, i.e., to be positioned in a flat / horizontal orientation. In this position the apparatus is resting on the wheel, such that it releases the tension on the straps allowing the straps to be unhooked from the arms.

[0125] 11. The moveable arms 16c, 16d can then be opened to the fully opened position as indicated on the apparatus (e.g., by arrows), such that the apparatus can be removed (i.e., lifted away) from the casualty wheel and tyre assembly. The extendable arms 164a-164d, 264a-264d can be optionally released and opened outwardly to further assist in removing the wheel from therebetween.

[0126] 12. The apparatus 10, 110, 210 may be removed from the wheel by the lifting eye (being still connected to the crane) in either embodiment of the apparatus 10, 110, 210, i.e., in which the lifting eye is either part of the first frame 14a, or in which the lifting eye is part of the lifting ring 144, 244 and secured to the first frame 114a, 214a. Alternatively, for embodiments of the apparatus 10, the lifting ring 44 may be released from its stored position and connected to the crane for lifting the apparatus about its horizontal orientation; and for embodiments of the apparatus 110, 210, the lifting ring 144, 244 can be disconnected, i.e., released from the first frame 114a, 214a so the lifting ring (while still connected to the crane) can swing outwardly from the first frame to allow the apparatus to be raised in its horizontal orientation.

[0127] 13. The apparatus can now be transferred to a new wheel and tyre assembly. In the case of utilising the lifting ring 44, 144, 244 (when disconnected from the first frame 14a, 114a, 214a) the apparatus can be transferred to the new wheel in the horizontal orientation.

[0128] 14. The user can adjust a location of the extendable arms 164a-164d, 264a- 264d to suit the diameter of the wheel to be received therebetween. As set forth previously, the pins 172, 272 can be removed / reinstalled when readjusting the position of the arms 164a-164d, 264a-264d.

[0129] 15. Using the nut runner, the moveable arms 16c, 16d, 116c, 116d, 216c, 216d can be closed about the wheel to engage and secure the wheel therebetween. It is noted that the upper arms 16a, 16b, 116a, 116b, 216a, 216b must be fully seated on the wheel (i.e., the tyre) prior to clamping the wheel and tyre assembly with the moveable arms 16c, 16d, 116c, 116d, 216c, 216d.

[0130] 16. Using the crane, the new wheel and tyre assembly may be lifted using the lifting eye 17a, 117a, 217a and presented to the hub carrier of the vehicle. The suspended wheel is orientated such that in-use upper lug holes will engage (i.e., receive) correspondingly located fasteners (i.e., studs) of the hub carrier first (i.e., before the relative lower lug holes receive the respective lower studs).

[0131] 17. Using the crane, lower the new wheel and tyre assembly onto the lower studs of the hub carrier. The operator can then use the nut-runner to fasten wheel nuts about the hub carrier prior to disengaging the apparatus from the wheel.

[0132] It is noted that, in situations whereby the straps 49, 149, 249 are utilised (i.e., as set forth above), the spikes 19 may alternatively be utilised, i.e., instead of the straps. In this case, the following changes to the above-listed method may be applied:

[0133] After step 2., the spikes 19 may be inserted into one or more of the arms 16a-16d, 116a-l 16d, 216a-216d. At this stage, the spikes 19 would only be partially inserted into the arms, i.e., ensuring the spikes 19 do not protrude through the arms (i.e., mounting blocks) of the arms. This is to ensure a passage of a wheel there-past is not impaired;

[0134] As an alternative to step 8., (i.e., where straps would otherwise be utilised) the user may use the nut-runner for driving (i.e., rotating) one or more of the four spikes 19 into the tyre rubber of the casualty wheel; and

[0135] As an alternative to step 10., after the casualty wheel and tyre assembly has been lowered to the ground, the spikes 19 can be removed (i.e., driven out of the tyre) using the nut-runner. The spikes may be stored in the toolbox 56 provided with the kit 52. Variations and modifications may be made to the parts previously described without departing from the spirit or ambit of the disclosure.

[0136] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e., to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

Claims

CLAIMS1. An apparatus for changing a wheel on a heavy vehicle, the apparatus comprising: a first frame having a lifting eye enabling the apparatus to be suspended from a hoist; a second frame supported by and rotatably connected to the first frame; and at least two arms attached to the second frame, with at least one of the arms being moveable in a direction away from, or toward, another of the arms to releasably secure the wheel to the second frame, whereby, when the apparatus and wheel are together suspended from the hoist, the second frame and wheel are rotatable independently of the first frame to thereby enable a user to align the wheel for mounting to the heavy vehicle.

2. An apparatus for changing a wheel according to claim 1, the apparatus comprising four arms spaced about the second frame, two of the arms being moveable in a direction away from, or toward, each other to releasably secure the wheel between the four arms.

3. An apparatus according to claim 2, wherein the two moveable arms are coupled about a gearbox for simultaneous movement of the arms towards or away from each other, the gearbox being controllable by the user for selective movement of the two arms for engaging the wheel therebetween.

4. An apparatus for changing a wheel according to any one of the preceding claims, wherein the first and second frames are annular, having a passage therethrough for allowing the user to access the wheel releasably secured thereat.

5. An apparatus for changing a wheel according to any one of the preceding claims, wherein the first and second frame are coupled about a slew bearing,whereby when the apparatus is suspended from the hoist, the first frame is held stationary by the hoist such that the second frame can be rotated about the first frame by the user.

6. An apparatus for changing a wheel according to any one of the preceding claims, wherein the lifting eye defines an in-use upper portion of the first frame when the lifting eye suspends the apparatus therefrom, the lifting eye being located with respect to the first frame such that: when the apparatus is suspended from the hoist, an in-use lower portion of the first frame is located at a general position vertically beneath the in-use upper portion; and when the apparatus and wheel are together suspended from the hoist, the in-use lower portion of the first frame is located at a position horizontally offset from the in-use upper portion of the first frame.

7. An apparatus for changing a wheel according to any one of the preceding claims, the apparatus further comprising a lifting ring enabling the apparatus to be suspended from a hoist in a horizontal orientation.

8. An apparatus for changing a wheel according to claim 7, wherein the lifting ring is pivotally connected to the first frame for moving between a stored position and a lifting position, the lifting ring in the: stored position for suspending the apparatus such that the in-use lower portion of the first frame is located at the general position vertically beneath the in-use upper portion, and when the apparatus and wheel are together suspended from the hoist, the in-use lower portion of the first frame is located at the position horizontally offset from the in-use upper portion of the first frame; and lifting position for suspending the apparatus in the horizontal orientation.

9. An apparatus for changing a wheel according to claim 7 or 8, wherein the lifting eye is secured to or forms part of the lifting ring, such that the apparatus can be suspended by the lifting eye in either the stored position or lifting position.

10. An apparatus for changing a wheel according to any one of the preceding claims, wherein each arm of the apparatus comprises apertures configured to releasably mount at least one strap thereto for restraining an in-use wheel to the apparatus.

11. An apparatus for changing a wheel according to any one of claims 2 to 10, the apparatus comprising at least one extendable arm configured to be extendable in a direction away from, or toward, a centre of the apparatus for accommodating differently sized wheels between the four arms.

12. An apparatus for changing a wheel according to claim 11, wherein two extendable arms are provided, each extendable arm being configured to be extendable between discrete locations for being selectively positioned away from, or toward, the centre of the apparatus.

13. An apparatus for changing a wheel according to any one of the preceding claims, wherein the two moveable arms further comprise respective extendable arms, the respective extendable arms of the moveable arms being configured to be extendable between discrete locations for being selectively positioned away from, or toward, the centre of the apparatus.

14. An apparatus for changing a wheel according to claim 11 or 12, wherein the extendable arms each comprise engagement portions configured to releasably secure the extension arms at the discrete locations.

Images