WO2012075531A1 - Connection assembly - Google Patents
Connection assembly Download PDFInfo
- Publication number
- WO2012075531A1 WO2012075531A1 PCT/AU2011/001585 AU2011001585W WO2012075531A1 WO 2012075531 A1 WO2012075531 A1 WO 2012075531A1 AU 2011001585 W AU2011001585 W AU 2011001585W WO 2012075531 A1 WO2012075531 A1 WO 2012075531A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base
- wear member
- lock
- coupling
- face
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims abstract description 58
- 238000010168 coupling process Methods 0.000 claims abstract description 58
- 238000005859 coupling reaction Methods 0.000 claims abstract description 58
- 230000000295 complement effect Effects 0.000 claims description 5
- 239000012858 resilient material Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
-
- 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
- E02F9/2833—Retaining means, e.g. pins
- E02F9/2841—Retaining means, e.g. pins resilient
-
- 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
- E02F9/2891—Tools for assembling or disassembling
Definitions
- the present invention relates to the connection of wearing elements to machinery. It is particularly directed to the connection of ground engaging tools such as teeth to excavator buckets, but may have wider application.
- the present invention seeks to provide an arrangement for connection of wearing elements, particularly teeth, which addresses some of these problems.
- a coupling for connecting a wear member to a base, the base including a first bearing surface, the wear member including a second bearing surface; the coupling including a rotatable lock having a first face arranged to bear against the first bearing surface and a second face arranged to bear against the second bearing surface, the relative positions of the first and second face varying around a central axis of the lock, such that in use rotation of the lock alters the distance between the first and second bearing surfaces.
- first face and the second face of the rotatable lock are both arcuate and have respective radii of curvature, with the radius of curvature of at least one of the first or second face varying around the lock central axis.
- the second face of the rotatable lock has a constant radius of curvature; that is, is part-cylindrical; whereas the first face has a varying radius of curvature; that is, is shaped like a spiral.
- the wear member may be arranged to align about the base along a longitudinal axis.
- the central axis of the lock may be perpendicular to this longitudinal axis, but it is preferred that that the central axis of the lock be oriented at about 10° to 20° relative to the perpendicular.
- the first face and second face of the rotatable lock may be located on a single bearing member.
- the bearing member includes a body portion, which is cylindrical, and has an outer surface forming the second face of the rotatable lock. It is also preferred that the bearing member has an engaging portion protruding from one side of the body portion, the engaging portion having an outer surface, at least a part of which forms the first face of the rotatable lock.
- the engaging portion may be formed from an introductory portion, which may include a substantially straight outer edge, joined to a spiralling portion.
- the engaging portion may be generally annular, with an outside wall and an inside wall. In this arrangement the outside wall of the spiralling portion forms the first face of the rotatable lock.
- the height of the engaging portion relative to the body portion may vary around the annulus. It is preferred that the height of the spiralling portion be a minimum at one end of the introductory portion, and at a maximum at a location on the spiralling portion which is located on a line which is
- the bearing member may be coupled to an operable member.
- the operable member includes a keyed projection which engages with a keyed recess in the bearing member.
- the rotatable lock is retained within the wear member.
- the wear member may have an internal cavity, with an aperture passing through a side wall of the wear member into the cavity, and the lock being receivable within the cavity.
- the cavity includes an inner region in which the bearing member can be received, the inner region including the second bearing face, and an outer region in which the operable member can be received.
- the inner and outer regions are separated by a toothed ring, arranged to engage with a toothed ring located about the rotatable lock.
- At least one of the toothed rings is resilient, such that engagement of the respective teeth will maintain the lock in a desired angular position, but whereby the application of an angular force to the operable member will cause deformation of the resilient toothed ring to allow rotation of the lock.
- the operable member includes a tool-receiving recess in which is located a plug formed at least partially of resilient material.
- the arrangement is such that insertion of a tool within the tool-receiving recess causes compression of the plug, and removal of the tool allows return of the plug to its uncompressed state.
- the base may include a side wall having a recess, the recess having an arcuate wall which forms the first bearing surface. It is preferred that the recess be generally tapered towards the arcuate wall.
- the recess may include a boss spaced from the arcuate wall, the boss being arranged to engage with the inside wall of the engaging portion of the bearing member in some angular positions, to promote disengagement of the wear member from the base during removal.
- the wear member may be an excavator tooth, and the base may be an adaptor.
- the adaptor includes a nose having a top and a bottom, each of the top and the bottom including two substantially flat bearing surfaces separated by concave joining surfaces.
- the excavator tooth has a cavity substantially complementary in shape to the adaptor nose, having substantially flat bearing surfaces separated by convex joining surfaces.
- the convex joining surfaces of the tooth have curvature slightly less than the concave joining surfaces of the adaptor nose.
- a coupling for connecting a wear member to a base, the base including a first bearing surface, the wear member including a second bearing surface;
- the coupling including a rotatable lock having a first face arranged to bear against the first bearing surface and a second face arranged to bear against the second bearing surface, the lock having a central axis about which it can be rotated, the first and second face being both axially and
- the present invention allows for selective engagement and disengagement of the lock by virtue of turning.
- the present invention allows for tightening of the lock, it will be appreciated that in its simplest form the invention may simply act as a latch to engage the coupling.
- a coupling for connecting a wear member to a base including a lock having at least two positions: a locked position whereby the wear member is restrained from moving relative to the base and an unlocked position in which the wear member is able to move relative to the base in an unrestrained manner, and wherein moving the lock from the locked position to the unlocked position urges the wear member away from the base.
- the lock be rotatable, and that the two positions correspond to two angularly spaced positions of the lock, and that rotation of the lock from the locked position to the unlocked position causes movement of the wear member relative to the base.
- the movement of the wear member is preferably translational, and may be radial relative to the lock rotation.
- the lock of the third aspect functions simply as a release mechanism for the wear member, rather than as a lock.
- a release mechanism for a wear member mounted onto a base the release mechanism having at least two positions: a first position in which the wear member is able to be coupled to the base, and a second position in which the release mechanism urges the wear member away from the base.
- the release mechanism be rotatable, and that the two positions correspond to two angularly spaced positions of the release mechanism, and that rotation of the release mechanism from the first position to the second position causes movement of the wear member relative to the base.
- the movement of the wear member is preferably translational, and may be radial relative to the release mechanism rotation.
- a lock for coupling a wear member to a base, the lock including a hollow for engagement with a tool, wherein a plug is contained within the hollow, the plug being resiliently compressible such that a tool can engage with the hollow by compressing the plug. When the tool is removed, the plug can return to its original configuration. In this way, the ingress of dust and particulate matter into the hollow is substantially impeded.
- Figure 1 is a perspective of an adaptor and tooth having a coupling in accordance with the present invention, shown prior to coupling;
- Figure 2 is a perspective of the adaptor and tooth of Figure 1 shown coupled
- Figure 3 is a front perspective of a nose of the adaptor of Figure 1 , showing a first side;
- Figure 4 is a rear perspective of the adaptor nose of Figure 3, showing a second side;
- Figure 5 is an external view of a lock-receiving aperture in the tooth of Figure 1 , shown prior to receiving a toothed ring;
- Figure 6 is an internal view of the lock-receiving aperture of Figure 5;
- Figure 7 is an external view of the lock-receiving aperture of Figure 5, shown with the toothed ring inserted;
- Figure 8 is an internal view of the lock-receiving aperture of Figure 7;
- Figure 9(a) is a side view of the lock-receiving aperture of Figure 5;
- Figure 9(b) is a cross section through line P-P marked on Figure 9a;
- Figure 10 is an exploded view of a lock from the coupling of Figure 1 , viewed from the outside;
- Figure 1 1 is an exploded view of the lock of Figure 10, viewed from the inside;
- Figure 12 is a set of side and plan views of a bearing member within the lock of Figure 10;
- Figure 13 is a set of side and plan views of an operable member within the lock of Figure 10;
- Figure 14(a) is a side view of the bearing member of Figure 12;
- Figure 14(b) is a cross section through line D-D marked on Figure 14(a);
- Figure 14(c) is a cross section through line E-E marked on Figure 14(a);
- Figure 14(d) is a cross section through line F-F marked on Figure 14(a);
- Figure 14(e) is a cross section through line G-G marked on Figure 14(a);
- Figure 14(f) is a cross section through line H-H marked on Figure 14(a);
- Figure 14(g) is a cross section through line l-l marked on Figure 14(a);
- Figure 14(h) is a cross section through line J-J marked on Figure 14(a);
- Figure 15(a) is a rear view of the tooth of Figure 1 , shown receiving the lock of Figure 10;
- Figure 15(b) is a rear view of the tooth of Figure 15a, shown with the lock in place;
- Figure 16 is a side view of the adaptor and tooth of Figure 1 during coupling;
- Figure 17 is a cross section through line A-A marked on Figure 16;
- Figure 18 is a cross section through line O-O marked on Figure 17;
- Figure 19 is an enlargement of a portion of Figure 17 showing the lock of Figure 10;
- Figure 20 is a side view of the adaptor and tooth of Figure 1 following coupling
- Figure 21 is a cross section through line C-C marked on Figure 20;
- Figure 22 is a cross section through line K-K marked on Figure 21 ;
- Figure 23 is an enlargement of a portion of Figure 21 showing the lock of Figure 10;
- Figure 24 is a perspective of a driving tool being used to operate the coupling of Figure 1 ;
- Figure 24(a) is an exploded view of a portion of the lock of Figure 10;
- Figures 25(a) to 25(c) are sequential cross sections of the driving tool of Figure 24 in use;
- Figure 26 is a plan view of the adaptor and tooth of Figure 1 ;
- Figure 27 is a cross section through line Q-Q marked on Figure 26;
- Figure 28 is a plan view of the adaptor and tooth of Figure 1 ;
- Figure 29 is a cross section through line Z-Z marked on Figure 28;
- Figure 30 is a plan view of the adaptor and tooth of Figure 1 ;
- Figure 31 is a cross section through line R-R marked on Figure 30;
- Figure 32 is a cross section through line W-W marked on Figure 31 ;
- Figure 33 is a cross section through line X-X marked on Figure 31 ;
- Figure 34 is a perspective of the nose of the adaptor of Figure 1 , showing some of the bearing areas of the nose;
- Figure 35 is a perspective of a bucket lip and lip shroud having a coupling in accordance with the present invention, shown prior to coupling;
- Figure 36 is a perspective of the bucket lip and lip shroud of Figure 35 shown coupled;
- Figure 37 is a rear perspective of the lip shroud of Figure 35;
- Figure 38 is a rear perspective of the lip shroud of Figure 35 shown with an exploded view of a lock from within the coupling of Figure 35;
- Figure 39 is a cross section of the bucket lip and shroud of Figure 35 during coupling.
- Figure 40 is a cross section of the bucket lip and shroud of Figure 35 shown coupled.
- Figure 1 shows a portion of a lip 10 of an excavator bucket, onto which is located an adaptor 20.
- a tooth 70 is shown ready for attachment to the adaptor 20.
- the adaptor 20 has a body part 21 ; a nose 22 extending forwardly of the body part 21 onto which the tooth 70 can be located, and two legs 24 extending rearwardly of the body part 21 about the lip 10.
- the nose 22 can be more clearly seen in Figures 3 and 4. It has a front wall 26, a top 28, a first side wall 30, a bottom 32, and a second side wall 34.
- the top 28 and the bottom 32 each extend from the body part 21 to the front wall 26.
- the top 28 and the bottom 32 are not parallel, but are generally angled towards each other such that the nose 22 reduces in height towards the front wall 26, with the front wall 26 being about half the height of the body part 21 .
- the first and second side walls 30, 34 each extend from the body portion 21 to the front wall 26.
- the first and second side walls 30, 34 are each stepped in from the body portion 21 , but thereafter are generally parallel towards the front wall 26.
- the top 28, bottom 32 and front wall 26 are thus all generally rectangular, whereas the first and second side walls 30, 34 are generally trapezoid.
- the first side wall 30 and the second side wall 34 each include a recess 40.
- the recess 40 has a rear edge 42, which is generally parallel to the rearmost part of the respective side wall 30, 34, and an arcuate front edge 44, which extends from either end of the rear edge 42 towards the front wall 26.
- the recess 40 is generally tapered, such that it increases in depth towards the front wall 26.
- the recess 40 has a base 46, which is part frusto- conical in shape, the cone axis being nearly perpendicular to the side wall 30, 34 and being located towards the rear edge 42, and the cone angle being extremely shallow.
- the cone axis is actually about 1 1 ° away from the perpendicular, with an outer end of the axis closer to the front wall 26 than an inner end.
- the base 46 is thus slightly convex.
- the rear of the base 46 which is the rear edge 42, is substantially level with the side wall 30, 34.
- Each side wall 30, 34 also includes a locating boss 50.
- the boss 50 is located within the recess 40, and has an outer face 52.
- the outer face 52 is generally rectangular with parallel upper and lower edges 54 extending from the rear edge 42 of the recess 40 towards the front wall 26.
- the outer face 52 is slightly convex, with the upper and lower edges 54 being parallel to a central axis of the adaptor nose 22 and being level with the rear edge 42, and a centre line of the outer face 52 protruding slightly higher.
- the outer face 52 has a front edge 55.
- the corners between the front edge 55 and the upper and lower edges 54 are radiussed, with a radius of curvature about one-third of the length of the front edge 55.
- the boss 50 has a side wall 56 which is generally perpendicular to the outer face 52, and extends between the outer face 52 and the recess base 46.
- the side wall 56 consists of two flat triangular portions beneath the upper and lower edges 54, a rectangular front portion 58, and two part-conical joining portions.
- the front portion 58 is spaced from a front-most part of the recess wall 48.
- the tooth 70 has an internal cavity 72 which is generally
- the tooth 70 has a first side wall 74 which locates over the first side wall 30 of the nose 22.
- a lock-receiving aperture 76 extends through the first side wall 74 between an outside surface of the tooth 70 and the internal cavity 72.
- the aperture 76 is generally circular, and arranged to align with the recess 40 when the tooth 70 is located about the adaptor 20.
- the lock-receiving aperture 76 is shown in detail in Figures 5 to 9.
- the aperture 76 is not perpendicular to the first side wall 74, but is in fact oriented at an angle of about 10° to 15° toward the rear of the cavity 72. This can be most clearly seen in Figure 9.
- the lock-receiving aperture 76 has three parts: a tooth recess 78 extending into the first side wall 74 from the internal cavity 72; a lock-locating recess 80 extending into the first side wall 74 from the outside surface of the tooth 70; and a ring-receiving portion 82 located between the tooth recess 78 and the lock-locating recess 80.
- the tooth recess 78 and the lock-locating recess 80 are both circular, being coaxial and of similar diameter.
- the ring- receiving portion 82 is substantially circular, and is of smaller diameter than the tooth recess 78 and lock-locating recess 80.
- the aperture 76 therefore has a stepped configuration.
- the ring-receiving portion 82 has a number of keyed apertures around its periphery, in order to securely receive a toothed ring 84 within.
- the toothed ring 84 which may be made of aluminium or a hard plastic, has a generally circular internal surface formed by a plurality of retaining teeth 86.
- the toothed ring 84 has outer keyed projections sized and shaped to be press fitted into the ring receiving portion 82 of the aperture 76. When the toothed ring 84 is thus fitted within the aperture 76, as shown in Figure 7, the teeth 86 define the separation between the tooth recess 78 and the lock-locating recess 80.
- the tooth 70 is coupled to the nose 22 of the adaptor 20 by means of a lock 100.
- the lock 100 can be seen in Figures 10 and 1 1 .
- the lock 100 includes a bearing member 102, a toothed engaging ring 104, and an operable member 106.
- the lock 100 also includes a screw 108 and a plug 1 10.
- the bearing member 102 which is shown in Figure 12, has a generally cylindrical body portion 1 12 sized to locate within the tooth recess 78 of the tooth 70.
- the body portion 1 12 has a first side 1 14 oriented, in use, towards the outside of the tooth 70; and a second side 1 16 oriented, in use, towards the cavity 72.
- the first side 1 14 includes a centrally positioned, keyed recess 1 18 extending into the body portion 1 12.
- An engaging portion 120 is located on the second side 1 16, extending outwardly from the body portion 1 12.
- the engaging portion 120 has a generally annular outer face 122, which is angled relative to the sides 1 14, 1 16 of the body portion 1 12.
- the engaging portion 120 thus has an outside wall 124 and an inside wall 125 which extend at an angle of about 75° to 80° from the second side 1 16 of the body portion 1 12, the outside wall 124 and inside wall 125 both extending between the second side 1 16 of the body portion 1 12 and the outer face 122.
- the height of the outside wall 124 and inside wall 125 vary circumferentially about the outer face 122.
- the outer face 122 has been described as generally annular, the annulus is not circular. It includes an introductory portion 126, the introductory portion having an outer edge (that is, part of the outside wall 124) including both a part-cylindrical portion, having a radius close to the radius of the body portion 1 12 and a substantially straight portion.
- the outer face 122 also includes a spiralling portion 127 which gradually increases in radius through about 300°, from a minimum radius where it joins the substantially straight edge portion of the introductory portion 126, to a maximum radius where it joins the part-cylindrical portion of the introductory portion 126.
- the height of the outside wall 124 and the inside wall 125 are at a minimum at the part-cylindrical portion of the introductory portion.
- the height of the outside wall gradually increases along the introductory portion 126 and then the spiralling portion 127, reaching a maximum height at a location about 215° around the annulus from the minimum height portion. The height then decreases through the remaining 135° of the spiralling portion 127. This can be seen through consideration of the sequential cross sections of Figure 14.
- outside wall 124 and inside wall 125 are not the same height, with the outside wall 124 being higher than the inside wall around the spiralling portion 127 and the inside wall being higher than the outside wall along the introductory portion 126.
- a screw receiving aperture 128 passes centrally through the body portion 1 12, inside the annulus of the engaging portion 120.
- the screw receiving aperture 128 is countersunk on the second side 1 16 of the body portion 1 12, again inside the annulus of the engaging portion 120.
- the toothed engaging ring 104 has engaging teeth 130 arranged about its outside, sized to engage with the retaining teeth 86 of the toothed ring 84.
- the toothed engaging ring 104 is formed from a resilient material such as rubber.
- the toothed engaging ring 104 has a keyed central aperture 132 which corresponds with the keyed recess of the bearing member 102.
- the operable member 106 has a generally cylindrical body portion 134 sized to locate within the lock-locating recess 80 of the tooth 70.
- the body portion 134 has a first side 136 oriented, in use, towards the outside of the tooth 70; and a second side 138 oriented, in use, towards the cavity 72.
- the first side 136 includes a centrally positioned, square-sided hollow or recess 140 extending into the body portion 134.
- a keyed projection 142 is located on the second side 138, extending outwardly from the body portion 134.
- the keyed projection 142 is sized and shaped to engage with both the central aperture 132 of the engaging ring 104 and the keyed recess 1 18 of the bearing member 102.
- the keyed projection 142 includes a centrally located screw receiving aperture 144.
- the plug 1 10 is square sided, and arranged to be located within the square-sided recess 140.
- the plug 1 10 is formed of a resilient material fixed to a rigid base plate.
- the base plate includes an internally threaded screw engaging aperture 145.
- the arrangement is such that the engaging ring 104 and the bearing member 102 can be fitted in turn on the keyed projection 142 of the operable member 106, and these three elements of the lock 100 can be held together by the screw 108 passing through respective receiving apertures 128, 144 and being screwed into screw engaging aperture 145. It will be appreciated that the keyed arrangement prevents relative rotation, and the screw 108 clamps the components together to prevent relative axial movement. It is also noted that the engaging ring 104, being rubber, may be vulcanised to the operable member 106.
- the lock 100 can be fitted into the tooth 70 as shown in Figures 15(a) and 15(b), with the bearing member 102 inserted from the cavity 72 and the operable member 106 inserted from outside the tooth 70.
- the lock 100 is rotated within the tooth aperture 76 to a position whereby the introductory portion 126 of the engaging portion 120 is oriented towards the front of the tooth 70.
- the tooth 70 can now be slid over the adaptor nose 22, to the position shown in Figures 16 to 19. In this position the highest part of the outer face 122 of the engaging portion 120 locates adjacent a rear part of the outer face 52 of the boss 50 of the adaptor nose 22. A portion of the inside wall 125 of the engaging portion 120 adjacent to the introductory portion 126 abuts and bears against the front portion 58 of the side wall 56 of the boss 50.
- Clockwise rotation of the lock 100 causes movement of the engaging portion 120 relative to the adaptor recess 40. Due to the increasing radius of the spiralling portion 127, as the lock 100 is rotated the inside wall 125 of the engaging portion 120 ceases to bear against the boss 50, but the outside wall 124 of the engaging portion 120 bears against the recess wall 48. The higher part of the engaging portion 120 moves into the recess 40, thus increasing the contact bearing area between the outside wall 124 and the recess wall 48.
- the lock 100 can be rotated in the opposite direction.
- the inside wall 125 comes into contact with the boss 50, further rotation acts to push the tooth 70 away from the body part 21 of the adaptor 20, allowing for easy removal of the tooth 70.
- This may be viewed as movement of the lock 100 between a locked position, in which the lock bears against both first and second bearing surfaces 150, 152; and an unlocked position in which the inside wall 125 bears against the front portion 58 of the boss 50, thus urging the tooth 70 away from the adaptor 20.
- the tooth 70 is urged away in a radial direction from the lock 100, and that its movement is therefore translational.
- the lock 100 functions as a release mechanism for the tooth 70, moving between a first position (the locked position) in which the tooth 70 can be coupled to the adaptor 20 and a second position (the unlocked position) in which the tooth 70 is urged away from the adaptor 20.
- the lock 100 is maintained in a desired angular position by engagement between the retaining teeth 86 of the toothed ring 84 and the engaging teeth 130 of the engaging ring 104.
- this may be effected using a square-ended driver 160 as shown in Figures 24 and 25.
- the plug 1 10 is resilient, with an outer cover 1 1 1 . Insertion of the square-ended driver 160 into the square-sided recess 140 causes
- the top 28 and bottom 32 of the nose 22 each have a contoured surface, and include a first bearing surface 170 and second bearing surface 172, which are substantially flat, and are separated by concave joining surfaces 174.
- the first and second bearing surfaces 170, 172 are each narrower than the width of the nose 22, with the first bearing surface 170 being located within an apparent scooped portion 176 of the top 28 and bottom 32 near the front wall 26.
- the tooth cavity 72 is largely complementary in shape to the adaptor nose 22, with convex surfaces having curvature slightly less than the concave joining surfaces 174. This ensures small clearances around the curved surfaces, and full contact along the flat bearing surfaces 170, 172.
- FIGS 35 to 40 show a lip shroud 180 being connected to a bucket lip 10, onto which has been mounted a lock coupling 182 similar to the first side wall 30 of the adaptor nose 22.
- a lock 100 identical to that described in relation to the tooth 70 can be used to couple the lip shroud 180 to the lock coupling 182 in an analogous manner.
Landscapes
- 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)
- Shovels (AREA)
- Earth Drilling (AREA)
- Pivots And Pivotal Connections (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Bridges Or Land Bridges (AREA)
- Connection Of Plates (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
Description
Claims
Priority Applications (17)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011340794A AU2011340794B2 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
MX2015008370A MX359765B (en) | 2010-12-07 | 2011-12-07 | Connection assembly. |
KR1020137017439A KR101901468B1 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
EA201300664A EA027888B1 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
MX2013006120A MX2013006120A (en) | 2010-12-07 | 2011-12-07 | Connection assembly. |
NZ61288011A NZ612880A (en) | 2010-12-07 | 2011-12-07 | Connection assembly for ground engaging tools |
CN201180059015.XA CN103299006B (en) | 2010-12-07 | 2011-12-07 | Connection component |
BR112013013263-9A BR112013013263B1 (en) | 2010-12-07 | 2011-12-07 | connection set, coupling and release mechanism |
CA2819753A CA2819753C (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
US13/991,431 US9121160B2 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
AP2013006977A AP3572A (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
JP2013542308A JP5911886B2 (en) | 2010-12-07 | 2011-12-07 | Coupling |
EP11847800.7A EP2649244A4 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
ZA2013/04803A ZA201304803B (en) | 2010-12-07 | 2013-06-27 | Connection assembly |
US14/840,555 US9850641B2 (en) | 2010-12-07 | 2015-08-31 | Connection assembly |
AU2016200757A AU2016200757C1 (en) | 2010-12-07 | 2016-02-05 | Connection assembly |
US15/822,626 US20180080200A1 (en) | 2010-12-07 | 2017-11-27 | Connection Assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010905369 | 2010-12-07 | ||
AU2010905369A AU2010905369A0 (en) | 2010-12-07 | Anchor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/155,472 Continuation-In-Part US8122623B1 (en) | 2010-12-07 | 2011-06-08 | Anchor |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/991,431 A-371-Of-International US9121160B2 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
US14/840,555 Division US9850641B2 (en) | 2010-12-07 | 2015-08-31 | Connection assembly |
Publications (1)
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WO2012075531A1 true WO2012075531A1 (en) | 2012-06-14 |
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Family Applications (1)
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PCT/AU2011/001585 WO2012075531A1 (en) | 2010-12-07 | 2011-12-07 | Connection assembly |
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US (3) | US9121160B2 (en) |
EP (1) | EP2649244A4 (en) |
JP (2) | JP5911886B2 (en) |
KR (1) | KR101901468B1 (en) |
CN (1) | CN103299006B (en) |
AP (1) | AP3572A (en) |
AU (2) | AU2011340794B2 (en) |
BR (1) | BR112013013263B1 (en) |
CA (2) | CA2819753C (en) |
CL (1) | CL2013001616A1 (en) |
CO (1) | CO6721057A2 (en) |
EA (2) | EA027888B1 (en) |
MX (2) | MX359765B (en) |
MY (2) | MY168123A (en) |
NZ (2) | NZ701811A (en) |
PE (2) | PE20141195A1 (en) |
WO (1) | WO2012075531A1 (en) |
ZA (1) | ZA201304803B (en) |
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US20140360062A1 (en) * | 2011-12-08 | 2014-12-11 | Safe Metal | Mechanical system comprising a wear part and a support, and a bucket comprising at least one such mechanical system |
KR20150137346A (en) * | 2014-05-29 | 2015-12-09 | 성보공업주식회사 | A bucket tooth of excavator |
WO2017027220A1 (en) * | 2015-08-12 | 2017-02-16 | Caterpillar Inc. | Retention lobe for ground engaging tip |
RU2754897C2 (en) * | 2017-03-09 | 2021-09-08 | Кейтерпиллар Инк. | Locking mechanism with electric drive for earthmoving equipment and implementation method |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US20140360062A1 (en) * | 2011-12-08 | 2014-12-11 | Safe Metal | Mechanical system comprising a wear part and a support, and a bucket comprising at least one such mechanical system |
US9290915B2 (en) * | 2011-12-08 | 2016-03-22 | Safe Metal | Mechanical system comprising a wear part and a support, and a bucket comprising at least one such mechanical system |
KR20150137346A (en) * | 2014-05-29 | 2015-12-09 | 성보공업주식회사 | A bucket tooth of excavator |
KR101581696B1 (en) | 2014-05-29 | 2015-12-31 | 성보공업주식회사 | A bucket tooth of excavator |
WO2017027220A1 (en) * | 2015-08-12 | 2017-02-16 | Caterpillar Inc. | Retention lobe for ground engaging tip |
US9644347B2 (en) | 2015-08-12 | 2017-05-09 | Caterpillar Inc. | Retention lobe for ground engaging tip |
RU2716080C2 (en) * | 2015-08-12 | 2020-03-05 | Кейтерпиллар Инк. | Fixing ledge for earthmoving tip |
AU2016306176B2 (en) * | 2015-08-12 | 2021-08-19 | Caterpillar Inc. | Retention lobe for ground engaging tip |
RU2754897C2 (en) * | 2017-03-09 | 2021-09-08 | Кейтерпиллар Инк. | Locking mechanism with electric drive for earthmoving equipment and implementation method |
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