WO2012012828A1 - Ensemble dent d'excavation - Google Patents

Ensemble dent d'excavation Download PDF

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Publication number
WO2012012828A1
WO2012012828A1 PCT/AU2011/000942 AU2011000942W WO2012012828A1 WO 2012012828 A1 WO2012012828 A1 WO 2012012828A1 AU 2011000942 W AU2011000942 W AU 2011000942W WO 2012012828 A1 WO2012012828 A1 WO 2012012828A1
Authority
WO
WIPO (PCT)
Prior art keywords
tooth member
tooth
socket
projecting portion
extending
Prior art date
Application number
PCT/AU2011/000942
Other languages
English (en)
Inventor
Mark Hurley
Reece Attwood
Original Assignee
Bradken Resources Pty Limited
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=45529273&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2012012828(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from AU2010903405A external-priority patent/AU2010903405A0/en
Application filed by Bradken Resources Pty Limited filed Critical Bradken Resources Pty Limited
Priority to US13/812,119 priority Critical patent/US20130180137A1/en
Priority to BR112013002053A priority patent/BR112013002053A2/pt
Priority to AU2011284785A priority patent/AU2011284785A1/en
Priority to AP2013006740A priority patent/AP2013006740A0/xx
Priority to CA2807076A priority patent/CA2807076A1/fr
Publication of WO2012012828A1 publication Critical patent/WO2012012828A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2825—Mountings therefor using adapters
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2858—Teeth characterised by shape

Definitions

  • the present disclosure relates to excavation tooth assemblies including shrouds and other types of wear assemblies.
  • the present disclosure also relates to a digging assembly comprising more than one excavation tooth assembly.
  • the present disclosure also relates to parts of the excavation tooth assemblies including tooth members and shroud wear members.
  • the disclosure has application in land based digging equipment and is herein described in that context. However, it is to be appreciated that the disclosure has broader application for example in waterborne excavation equipment such as dredgers, and is therefore not limited to that application.
  • Excavation teeth are provided on the digging edge of various pieces of digging equipment such as the buckets of front end loaders and the cutting bit of dredgers.
  • the excavation teeth may include digging teeth that act as the main ground engaging parts of the digging equipment and shrouds disposed between the digging teeth which provide wear protection for the digging edge lip.
  • Each excavation tooth is formed of a number of parts; for example, the digging teeth may comprise a point and an adapter (or nose) and in some arrangements an intermediate member between the point and the adapter.
  • a shroud may comprise a shroud wear member and a base member.
  • Each excavation tooth typically also comprises a lock or locks to lock the various parts together. The reason why excavation teeth are formed of a number of parts is to avoid having to discard the entire tooth when the only a part of the tooth is worn or broken.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a projecting portion extending in a longitudinal direction towards said first end, the projecting portion having a top surface and a bottom surface; and opposite sides extending between said top and bottom surfaces, the projecting portion being configured with spaced apart side regions extending in the longitudinal direction and being defined by portions of the top and bottom surfaces and respective ones of the sides; and a mid region disposed between said side regions, wherein the mid region is recessed relative to the side regions along at least a portion of at least one of the top and bottom surfaces.
  • the tooth member may be a nose which has a coupling portion at the nose's second end which is welded into a recess formed in the digging edge of a bucket or dredger cutting bit or other digging equipment.
  • the tooth member may be an adapter, which may have arms extending from the second end of the body, the arms for fixing to the digging edge of a bucket or dredger cutting bit or other digging equipment.
  • the adapter may alternatively incorporate some other mechanism for fastening the adapter to the digging edge of such digging equipment.
  • the tooth member may be an intermediate member between a point and an adapter (or nose) in an excavation tooth assembly.
  • the body of the tooth member also incorporates a socket opening at the second end of the body and configured to receive a projecting portion of the adapter (or nose).
  • the tooth member may be a shroud wear member that is disposed between the digging teeth that comprise an adaptor and a point. The shroud wear member may be attached directly to the digging edge of the digging equipment or is connected to a base member that is mounted to the digging edge.
  • the mid region may be recessed in both the top and bottom surfaces of the body.
  • the recess defined by the mid region may extend from the first end of the body towards the second end of the body, preferably parallel to the longitudinal axis of the body.
  • the recesses are axially aligned in their longitudinal direction.
  • the top surface and the bottom surface may converge towards the first end of the body.
  • the first side region may define broad arcuate surface portions in the top and/or bottom surfaces of the projecting portion.
  • the second side region may define broad arcuate surface portions in the top and/or bottom surfaces of the projecting portion.
  • the broad arcuate surface portions may be convexly curved surfaces and may curve from one of the sides of the projecting portion to the mid region of the projecting portion.
  • the recess defined by the mid region may be a concavely curved surface, preferably forming a concave trough between the first and second side regions.
  • the first end of the body may finish in a front face.
  • the top and bottom surfaces of the projecting portion may converge towards this front face.
  • the front face may also extend between the first and second sides of the projecting portion.
  • the front face is shaped with a convex curve between the first and second sides of the projecting portion.
  • a first side surface extending between the top surface and the bottom surface.
  • At the second side of the body is a second side surface extending between the top surface and the bottom surface.
  • the first and second side surfaces may converge towards the first end of the body.
  • the first and/or second side surfaces may be concave between the top and bottom surfaces of the body.
  • the body of the tooth member may also incorporate a cavity for receiving a lock to lock the tooth member to a further tooth member.
  • the cavity may be located in the projecting portion of the tooth member is configured to be received.
  • the cavity may extend between the first and second sides of the body, in which embodiment the cavity opens in the first and second side surfaces.
  • the tooth member may have curved transition segments at the openings of the cavity, the transition segments curving from the side surfaces of the projecting portion to an internal surface defining the cavity.
  • the projecting portion may taper between the top and bottom surfaces. In one form, the projecting portion is wider at the top surface than at the bottom surface, but in another embodiment may be wider at the bottom surface than at the top surface.
  • the side surfaces are planar and may or may not be orthogonal to the longitudinal axis of the body.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a socket extending in a longitudinal direction towards said first end from an opening in the second end, the socket defined by a top inner surface and a bottom inner surface of the body; and opposite sides extending between said top and bottom inner surfaces, the socket being configured with spaced apart side regions extending in the longitudinal direction and being defined by portions of the top and bottom inner surfaces and respective ones of the sides; and a mid region disposed between said side regions, wherein the mid region is reduced in height relative to the side regions by a projection along at least a portion of at least one of the top and bottom inner surfaces.
  • the socket of the tooth member of this second aspect of the invention is correspondingly shaped to the projecting portion of the tooth member of the first aspect of the present invention so as to receive the projecting portion therein.
  • the tooth member of this second aspect of the present invention may be a point in which the body of the tooth member incorporates a digging edge at the first end.
  • the tooth member may be an intermediate member between a point and a nose of the excavation tooth assembly.
  • the body of the intermediate tooth member also incorporates a projecting portion at the first end which is configured to be received in the socket of the point.
  • the projection defining the mid region may extend from the second end of the body towards the first end of the body, preferably parallel to the longitudinal axis of the body.
  • the projection defining the mid region may comprise a ridge on each of the top and bottom inner surfaces.
  • the ridges may be axially aligned in their longitudinal direction.
  • the mid region may be reduced in height relative to the side regions by ridges on each of the top and bottom inner surfaces.
  • the top inner surface and the bottom inner surface may converge towards the first end of the body.
  • the first side region may define broad arcuate surface portions in the top and/or bottom inner surfaces of the socket.
  • the second side region may define broad arcuate surface portions in the top and/or bottom inner surfaces of the socket.
  • the broad arcuate surface portions may be concavely curved surfaces and may curve from one of the sides of the socket to the mid region of the socket.
  • the ridge may be a convexly curved ridge located between the first and second side regions.
  • the socket may finish towards the first end of the body in an inner end face.
  • the top and bottom inner surfaces of the socket may converge towards this inner end face.
  • the inner end face may also extend between the first and second sides of the socket.
  • the inner end face is shaped with a concave curve between the first and second sides of the socket.
  • At the first side of the socket is a first inner side surface extending between the top inner surface and the bottom inner surface.
  • At the second side of the socket is a second inner side surface extending between the top inner surface and the bottom inner surface.
  • the first and second inner side surfaces may converge towards the first end of the body.
  • the tooth member may have a recess formed in at least one of the first and second side surfaces of the body.
  • Each recess may extend in the longitudinal direction of the body.
  • the first and/or second inner side surfaces may be convex between the top and bottom inner surfaces of the socket.
  • the socket may taper between the top and bottom inner surfaces. In one form, the socket is wider at the bottom inner surface than at the top inner surface, but in another embodiment may be wider at the top inner surface than at the bottom inner surface.
  • the inner side surfaces are planar and may or may not be orthogonal to the longitudinal axis of the body.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a projecting portion extending in a longitudinal direction towards said first end, the projecting portion having a top surface and a bottom surface; and opposite sides extending between said top and bottom surfaces, wherein the first end of the body finishes in a front face, which is shaped with a convex curve between the first and second sides of the projecting portion.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a socket extending in a longitudinal direction towards said first end from an opening in the second end, the socket defined by a top inner surface and a bottom inner surface of the body; and opposite sides extending between said top and bottom inner surfaces, wherein the socket finishes towards the first end of the body in an inner end face which is shaped with a concave curve between the first and second sides of the socket.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a projecting portion extending in a longitudinal direction towards said first end, the projecting portion having a top surface and a bottom surface; and opposite sides extending between said top and bottom surfaces, wherein the projecting portion tapers between the top and bottom surfaces.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a socket extending in a longitudinal direction towards said first end from an opening in the second end, the socket defined by a top inner surface and a bottom inner surface of the body; and opposite sides extending between said top and bottom inner surfaces, wherein the socket tapers between the top and bottom inner surfaces.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a projecting portion extending in a longitudinal direction towards said first end, the projecting portion having a top surface and a bottom surface; and opposite sides extending between said top and bottom surfaces, the sides defined by first and second side surfaces extending between the top surface and the bottom surface, the side surfaces being planar and substantially orthogonal to the longitudinal axis of the body.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a socket extending in a longitudinal direction towards said first end from an opening in the second end, the socket defined by a top inner surface and a bottom inner surface of the body; and opposite sides extending between said top and bottom inner surfaces, the sides defined by first and second inner side surfaces extending between the top inner surface and the bottom inner surface, the inner side surfaces being planar and substantially parallel and substantially orthogonal to the longitudinal axis of the body.
  • a tooth member of an excavation tooth assembly comprising a body having opposite first and second ends, and a projecting portion extending in a longitudinal direction towards said first end, the projecting portion having a top surface and a bottom surface, and opposite sides extending between said top and bottom surfaces, wherein the tooth member has a recess formed in at least one of the first and second side surfaces of the body.
  • the tooth member may have a recess in each of the first and second side surfaces of the body.
  • Each recess may extend in the longitudinal direction of the body.
  • the first and/or second side surfaces may be concave between the top and bottom surfaces of the body.
  • Each recess may be shaped to enable the tooth member to fit in abutment against an adjacent tooth member when installed on digging equipment.
  • a digging assembly for attachment to digging equipment, the digging assembly comprising at least first and second excavation tooth assemblies, each excavation tooth assembly comprising a tooth member configured to be attached to the digging equipment adjacent to the tooth member of another excavation tooth assembly, the tooth member of each excavation tooth assembly having at least one side surface that is shaped to enable the tooth member to be attached to the digging equipment with at least one of its side surfaces in fitment with the side surface of an adjacent tooth member.
  • the side surface of one of the adjacent tooth members may be recessed, in which embodiment the side surface of the other adjacent tooth member that is configured to be in fitment with the side surface of the first mentioned tooth member is projected.
  • Figure 1 is a top view of an intermediate member coupled to a nose in an excavation tooth assembly according to an embodiment of the present disclosure
  • Figure 2 is a side view of the intermediate member and nose of Figure 1 ;
  • Figures 3 and 4 are perspective views of the intermediate member and nose of Figure 1 ;
  • Figure 5 is an end view of the intermediate member of Figure 1 ;
  • Figure 6 is a perspective end view of the intermediate member of Figure 1 ;
  • Figures 7 and 8 are upper and lower perspective views of the nose of
  • Figures 9(A) and 9(B) are upper and lower perspective views of the projecting portion of a nose according to another embodiment of the present disclosure in isolation;
  • Figure 10 is a side view of the projecting portion of Figure 9;
  • Figure 1 1 is a top view of the projecting portion of Figure 9;
  • Figure 12 is a front end view of the projecting portion of Figure 9;
  • Figure 13A.-13F. is a perspective, top, bottom, rear, side and front views of a shroud wear member of an excavation tooth assembly according to an embodiment of the present disclosure;
  • Figure 14 is a perspective view of the digging edge of excavator bucket with a plurality of the shroud wear members of Figure 13 attached to the digging edge, each shroud wear member having adjacent on either side an excavation tooth assembly according to the embodiment in Figure 1 ;
  • Figure 15 is front view of the digging edge of Figure 14.
  • a nose or adaptor and an intermediate member of an excavation tooth assembly being a digging tooth assembly 1 , according to embodiments of the present disclosure.
  • the nose 10 may be mounted to the digging edge of digging equipment (such as the buckets of front end loaders or the cutting bit of dredgers) by welding a rear portion of the nose into a recess formed in the digging edge.
  • the nose may be integrally cast with a lip member that forms the digging edge of the digging equipment.
  • the intermediate member 1 1 couples to the nose 10.
  • a point which couples to the intermediate member 1 1 and comprises a digging edge which engages the ground in use.
  • Also not shown but which forms a part of the excavation tooth assembly are locks for locking the intermediate member to the nose and the point to the intermediate member.
  • the nose 10 comprises a body having opposite first and second ends and a projecting portion 15 extending in the longitudinal direction towards the first end and the intermediate member 1 1 comprises a body having opposite first and second ends and a socket 16 which opens at the second end and extends in the longitudinal direction towards the first end, the projecting portion and socket configured to be coupled together with the projecting portion received in the socket.
  • the socket 16 of the intermediate member 1 1 is therefore provided with a shape which generally corresponds to the shape of the projecting portion 15 of the nose 10.
  • a cavity 14 is provided through the projecting portion 15 of the nose which aligns with openings 38, 39 through walls of the socket 16.
  • a lock (not shown) is positioned relative to the cavity 14 and the openings 38, 39 to lock the intermediate member to the nose so as to retain the projecting portion 15 in the socket 16.
  • the body of the intermediate member also incorporates a projecting portion
  • the projecting portion 17 of the intermediate member which is configured to be received in a socket of the point of the excavation tooth assembly.
  • a cavity 18 is provided in the projecting portion 17 for receipt therein of a lock (not shown) for locking the point to the intermediate member.
  • the projecting portion 17 of the intermediate member could be designed to have features similar to the projecting portion 15 of the nose, which would mean that the socket of the point would have similar features to the socket 16 of the intermediate member 1 1 .
  • the projecting portion 17 of the intermediate member is of a different design to the projecting portion 15 of the nose.
  • the projecting portion 15 of the nose 10 is shown in isolation.
  • the projecting portion 15 has a top surface 20, a bottom surface 21 and opposite side surfaces 22, 23 extending between the top and bottom surfaces.
  • the projecting portion 15 also has spaced apart side regions 24, 25 and a mid region 26 disposed between and spacing apart the side regions.
  • the mid region 26 is recessed relative to the side regions 24, 25 along the top and bottom surfaces 20, 21 .
  • This structure which is based on an I-beam profile, provides both increased stability for the tooth members joined via this projecting portion structure as well as increased strength for the projecting portion in torsion. It is noted that although in the illustrated embodiment the mid region 26 is recessed along the length of the projecting portion 15, in other embodiments, the mid region may be recessed only part of the length of the projecting portion.
  • the side regions 24, 25 are defined by broad arcuate surface portions of the top and bottom surfaces 20, 21 which are convexly curved and extend the length of the projecting portion 15 from the first end of the nose body towards the second end of the nose body. Each broad arcuate surface portion curves between the top or bottom of one of the side surfaces to the mid region of the projecting portion. These broad arcuate surface portions reduce the contact pressure between the projecting portion 15 and the socket in which the projecting portion is received in use.
  • the mid region 26 is defined by a concavely curved trough in each of the top and bottom surfaces 20, 21 which extend the length of the projecting portion 15. Each trough curves between the first and second side regions. The mid region 26 is located centrally in the projecting portion 15 with the troughs axially aligned such that a longitudinal axis of the mid region defines an axis of symmetry of the projecting portion 15.
  • top and bottom surfaces 20, 21 of the projecting portion 15 converge towards the first end of the nose body, with the projecting portion ending in a front face 27 extending between the top and bottom surfaces as well as side surfaces 22, 23.
  • this front face 27 is convex between the side surfaces 22, 23 of the projecting portion 15 so as to reduce contact pressure between the projecting portion 15 and the socket in which he projecting portion is received.
  • the front face may be substantially planar between the side surfaces.
  • top and bottom surfaces 20, 21 are of approximately equal width along the length of the projecting portion 15.
  • Figures 9-12 show another embodiment, in which the projecting portion tapers between the top and bottom surfaces with the bottom surface being wider than the top surface.
  • the projecting portion may be formed with the top surface wider than the bottom surface.
  • the opposite side surfaces 22, 23 also converge towards the first end of the nose body.
  • the side surfaces 22, 23 are also each concavely shaped between the top and bottom surfaces 20, 21. This shaping reduces the contact pressure between the projecting portion 15 and the socket in which it is received when the excavation tooth is twisted.
  • the concave side surfaces 22, 23 also provides a smoother geometric transition into the cavity 14 (ie. there are no sharp corners), which reduces the stresses around the cavity 14 both during manufacture and use of the nose. These stresses are also reduced by curved transition segments 28 at the openings of the cavity 14. The transition segments 28 curve from the side surfaces 22, 23 of the projecting portion 15 to an internal surface 29 defining the cavity.
  • the side surfaces are planar. In these embodiments, the side surfaces may or may not be orthogonal to the longitudinal axis of the body.
  • the intermediate member 1 1 and in particular the socket 16 of the intermediate member is shown.
  • the inner surface of the socket 16 is shaped to match and fit with the outer surface of the projecting portion 15 of the nose 10 as described above.
  • the body of the intermediate member 1 1 comprises top, bottom and opposite side walls 30, 31 , 32, 33 having top, bottom and opposite inner side surfaces 34, 35, 36, 37 respectively which define the socket 16. Openings 38, 39 are provided through the side walls 32, 33 of the intermediate member body to the socket 16, so as to provide access to (and for engagement by if so designed) the lock which locks the intermediate member 1 1 to the nose 10.
  • the socket 16 also has spaced apart side regions 40, 41 and a mid region 42 disposed between and spacing apart the side regions.
  • the mid region 42 is reduced in height relative to the side regions 40, 41 by projections in the form of ridges 50, 51 along the top and bottom inner surfaces 34, 35.
  • the side regions 40, 41 are defined by broad arcuate surface portions of the top and bottom inner surfaces 34, 35 which are concavely curved and extend the length of the socket 16 from the second end of the intermediate member body towards the first end of the intermediate member body.
  • Each broad arcuate surface portion curves between the top or bottom of one of the inner side surfaces to the mid region of the socket.
  • the mid region 42 is defined by the convexly curved ridges 50, 51 on each of the top and bottom inner surfaces 34, 35 which extend the length of the socket 16. Each ridge 50, 51 curves between the first and second side regions.
  • the mid region 42 is located centrally in the socket 16 with the ridges axially aligned such that a longitudinal axis of the mid region defines an axis of symmetry of the socket 16.
  • top and bottom surfaces 34, 35 of the socket 16 converge towards the first end of the intermediate member body, with the socket ending in an inner end face 43 extending between the top and bottom inner surfaces as well as inner side surfaces 36, 37.
  • this inner end face 42 is concave between the inner side surfaces 36, 37 of the socket 16 so as to reduce contact pressure between the socket 16 and the projecting portion received therein.
  • the inner end face may be substantially planar between the inner side surfaces.
  • the socket has top and bottom inner surfaces 34, 35 which are of approximately equal width along the length of the socket.
  • the socket may taper between the top and bottom inner surfaces 34, 35, with the top or bottom inner surface being wider than the other.
  • the opposite inner side surfaces 36, 37 also converge towards the first end of the intermediate member body.
  • the inner side surfaces 36, 37 are also each convexly shaped between the top and bottom inner surfaces 34, 35. However, in other embodiments, the inner side surfaces are planar. In these embodiments, the inner side surfaces may or may not be orthogonal to the longitudinal axis of the body.
  • the projecting portion of the nose may be formed with planar portions at the apexes of the side regions and/or the antapexes of the recessed mid region.
  • the socket of the intermediate member may be formed with planar portions at the antapexes of the recessed side regions and/or the apexes of the projection mid regions.
  • the planar portions formed at the side regions of the projecting portion may be parallel to or slanted transverse to the longitudinal direction of the nose with respect to each other.
  • the planar portions formed at the side regions of the socket may be similarly shaped.
  • planar portions at the apexes/antapexes provide a shape which is easier to gauge when conducting such repairs.
  • an excavation tooth assembly in the form of a shroud assembly 60, is shown.
  • the shroud assembly 60 is particularly configured to protect the lip edge 61 of the digging equipment to which it is attached.
  • each shroud assembly 60 is disposed between and thus protects the lip edge 61 between digging teeth assemblies 1 according to the embodiment shown and described in respect of Figures 1-12.
  • there are no digging teeth assemblies provided on the digging equipment and the shroud assemblies 60 are disposed along the length of the lip of the digging equipment adjacent one another.
  • Each shroud assembly 60 comprises a shroud wear member 62 which is shown in detail in Figure 13.
  • the shroud wear member 62 may be attached directly to the digging equipment about the lip edge 61.
  • each shroud assembly may comprise a base member that is attached to the digging equipment and to which its respective shroud wear member 62 is mounted.
  • Each shroud assembly also comprises a lock (not shown) which the locks the shroud wear member 62 in its attachment to the digging equipment.
  • the shroud wear member 62 has a first end and a second and comprises a projecting portion 65 extending in a longitudinal direction towards the first end and first and second legs 66, 67 extending away from the projecting portion and towards the second end.
  • the first and second legs 66, 67 are spaced apart and configured to fit over and engage opposed surfaces of the digging equipment.
  • a locking cavity 68 is provided in the first leg 66 for receiving the lock to lock the shroud wear member 62 to the digging equipment.
  • the projecting portion 65 has a top surface 70, a bottom surface 71 and opposite side surfaces 72, 73 extending between the top and bottom surfaces. The top and bottom surfaces 70, 71 converge towards the first end of the shroud wear member 62.
  • the top surface 70 is also provided with self-sharpening pockets 74. These pockets 74 help maintain a pointed profile for the shroud wear member 62 is it wears so that it can still effectively penetrate into soil. The pockets 74 also have the additional benefit of lightening the shroud wear member 62.
  • the top surface of the shroud wear member 62 may also be provided with a wear indicator in the form of a shallow recess which provides a quick visual indication of how much the shroud wear member 62 has worn during use and whether it might require replacement.
  • Each of the side surfaces 72, 73 of the projecting portion 65 are recessed.
  • Each recess 75, 76 in the side surfaces extend in the longitudinal direction of the projecting portion 65 and have curved portions so that the side surfaces 72, 73 are somewhat concave between the top and bottom surfaces 70, 71 of the projecting portion.
  • a particular advantage of the recesses 75, 76 in the side surfaces 72, 73 of the shroud wear member 62 is that enables the wear member 62 to be in close fitment with the side of adjacent tooth members attached to the digging equipment that projects of bulges. This is shown, for example, in Figures 14 and 15. As a result, the entire length of the lip edge of the digging edge is protected from wear.
  • tooth members including noses (adaptors), intermediate members, points and shroud wear members according to any embodiment of one aspect of the present disclosure may further encompasses any one or combination of features described above in relation to embodiments of other aspects of the present invention.
  • features described above in respect of a digging tooth assembly may be incorporated into a shroud assembly and vice versa. That is, features described above in respect of a shroud assembly may be incorporated into a digging tooth assembly.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention porte sur un élément de dent d'un ensemble dent d'excavation, lequel élément de dent comprend un corps ayant des premières et secondes extrémités opposées, et une partie saillante s'étendant dans une direction longitudinale vers ladite première extrémité, la partie saillante ayant une surface supérieure et une surface inférieure ; et des côtés opposés s'étendant entre lesdites surfaces supérieure et inférieure, la partie saillante étant configurée avec des régions latérales mutuellement espacées s'étendant dans la direction longitudinale et étant définie par des parties des surfaces supérieure et inférieure et des côtés respectifs parmi les côtés ; et une région centrale disposée entre lesdites régions latérales, la région centrale étant en creux par rapport aux régions latérales le long d'au moins une partie d'au moins l'une des surfaces supérieure et inférieure.
PCT/AU2011/000942 2010-07-29 2011-07-28 Ensemble dent d'excavation WO2012012828A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US13/812,119 US20130180137A1 (en) 2010-07-29 2011-07-28 Excavation tooth assembly
BR112013002053A BR112013002053A2 (pt) 2010-07-29 2011-07-28 conjunto de dente de escavação
AU2011284785A AU2011284785A1 (en) 2010-07-29 2011-07-28 Excavation tooth assembly
AP2013006740A AP2013006740A0 (en) 2010-07-29 2011-07-28 Excavation tooth assembly
CA2807076A CA2807076A1 (fr) 2010-07-29 2011-07-28 Ensemble dent d'excavation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010903405 2010-07-29
AU2010903405A AU2010903405A0 (en) 2010-07-29 Excavation tooth assembly

Publications (1)

Publication Number Publication Date
WO2012012828A1 true WO2012012828A1 (fr) 2012-02-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2011/000942 WO2012012828A1 (fr) 2010-07-29 2011-07-28 Ensemble dent d'excavation

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US (1) US20130180137A1 (fr)
AP (1) AP2013006740A0 (fr)
AU (1) AU2011284785A1 (fr)
BR (1) BR112013002053A2 (fr)
CA (1) CA2807076A1 (fr)
CL (1) CL2013000267A1 (fr)
PE (1) PE20131186A1 (fr)
WO (1) WO2012012828A1 (fr)
ZA (1) ZA201300711B (fr)

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CN110073062A (zh) * 2016-12-15 2019-07-30 卡特彼勒公司 具有带有锥形固位通道的尖端的器具地面接合尖端组件
WO2023064987A1 (fr) * 2021-10-21 2023-04-27 Cqms Pty Ltd Ensemble d'usure pour excavatrice

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FR2983880B1 (fr) * 2011-12-08 2014-11-21 Afe Metal Systeme mecanique comprenant une piece d'usure et un support, et godet comprenant au moins un tel systeme mecanique
AU2013204898B2 (en) * 2013-04-12 2016-11-03 Bradken Resources Pty Limited Excavation Tooth Assembly
US10196799B2 (en) * 2014-12-19 2019-02-05 Caterpillar Inc. Ground engaging tool
USD769946S1 (en) 2015-04-17 2016-10-25 Caterpillar Inc. Lip for ground engaging machine implement
USD767647S1 (en) 2015-04-17 2016-09-27 Caterpillar Inc. Lip shroud for ground engaging machine implement
US10508418B2 (en) 2016-05-13 2019-12-17 Hensley Industries, Inc. Stabilizing features in a wear member assembly
US9856629B1 (en) 2016-07-21 2018-01-02 Caterpillar Inc. Lip shroud for cast lip on a work implement
USD918965S1 (en) 2018-06-19 2021-05-11 Hensley Industries, Inc. Ground engaging wear member
US20220372735A1 (en) * 2021-05-20 2022-11-24 Caterpillar Inc. Cast top cover for base edge wear protection

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CN110073062A (zh) * 2016-12-15 2019-07-30 卡特彼勒公司 具有带有锥形固位通道的尖端的器具地面接合尖端组件
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Also Published As

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CA2807076A1 (fr) 2012-02-02
US20130180137A1 (en) 2013-07-18
AP2013006740A0 (en) 2013-02-28
AU2011284785A1 (en) 2013-02-07
BR112013002053A2 (pt) 2018-01-30
CL2013000267A1 (es) 2013-05-17
PE20131186A1 (es) 2013-10-25
ZA201300711B (en) 2014-02-26

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