EP4444956B1 - Verschleissanordnung für einen eimer einer extraktions- oder arbeitsmaschine - Google Patents

Verschleissanordnung für einen eimer einer extraktions- oder arbeitsmaschine

Info

Publication number
EP4444956B1
EP4444956B1 EP22823600.6A EP22823600A EP4444956B1 EP 4444956 B1 EP4444956 B1 EP 4444956B1 EP 22823600 A EP22823600 A EP 22823600A EP 4444956 B1 EP4444956 B1 EP 4444956B1
Authority
EP
European Patent Office
Prior art keywords
key
tooth
bearing
sheath
received
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22823600.6A
Other languages
English (en)
French (fr)
Other versions
EP4444956C0 (de
EP4444956A1 (de
Inventor
Fabrice MARCHAND
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safe Metal SAS
Original Assignee
Safe Metal SAS
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
Application filed by Safe Metal SAS filed Critical Safe Metal SAS
Publication of EP4444956A1 publication Critical patent/EP4444956A1/de
Application granted granted Critical
Publication of EP4444956C0 publication Critical patent/EP4444956C0/de
Publication of EP4444956B1 publication Critical patent/EP4444956B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E02F9/2833—Retaining means, e.g. pins
    • 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
    • E02F9/2883—Wear elements for buckets or implements in general
    • 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 invention relates to a wear assembly for a bucket of an extraction or works machine.
  • the invention relates to the field of equipment for mining and construction machines, in particular concerning buckets, skips or other receptacles used both for working, in particular digging, scraping and/or removing, a material and for moving this material.
  • the material is generally a heavy, hard, granular and/or abrasive material.
  • the material is earth, rocks, aggregates or rubble.
  • a bucket comprises an attack blade equipped with teeth, which are wear parts designed for their ability to attack and penetrate the material worked and transported by the bucket. Provision is made for the possibility of individually replacing each tooth when it is worn.
  • FR 3 011 013 A1 discloses a bucket, with a support and a tooth, which can be locked onto the support using a connecting device.
  • the connecting device comprises an elastically deformable sleeve, a metal key, a metal toothed cam, a metal crescent and two seals. The key, the toothed cam and the crescent are received in the sleeve.
  • the key and the cam are integrally movable in rotation in an internal cavity of the sleeve, between a configuration of insertion of the key in the cam and one or more locking configurations, where the key presses radially against the tooth, while the cam presses against the sleeve so that the sleeve presses against the housing of the support, to form a coupling connection of the tooth and the support.
  • the inner cavity of the sleeve also accommodates the metal crescent, which serves as a bearing to support the rotation of the key-cam assembly. Seals are arranged on either side of the sleeve to ensure sealing.
  • This known connecting device generally gives satisfaction, being particularly durable and reliable despite intensive use of the bucket.
  • this connecting device is relatively complex to manufacture, given the need to provide a total of six parts. Certain critical parts, such as the key and the notched cam, must be formed by a demanding forging process, while requiring subsequent machining to obtain the notching and/or form the head of the key.
  • One of the aims of the invention is to obtain a new wear assembly for a bucket, which is easier to manufacture, without prejudice to its reliability and the ease of replacing the tooth when it is worn.
  • the invention relates to a wear assembly for a bucket of an extraction or works machine, the wear assembly comprising: a tooth holder, which is intended to be fixed to the bucket and which comprises a keying duct, crossed by a keying axis; a tooth, which is configured to be fitted onto the tooth holder, in a fitting direction; and a keying device.
  • the keying device comprises a sleeve, which comprises a housing duct and an outer wall, the sleeve being configured to be received in the keying duct via the outer wall, the sleeve then being fixed in rotation relative to the tooth holder around the keying axis via the outer wall.
  • the keying device comprises a key, which is configured to be received in the housing duct so as to be pivotable relative to the sheath, between an insertion orientation, in which the key is able to be slid in the housing duct while the sheath is received in the keying duct, and a locking orientation, in which, while the sheath is received in the keying duct, the keying device clamps the tooth against the tooth holder in the fitting direction under the action of the key, by pressing the key against a support seat belonging to the tooth, in the direction of the fitting direction, and pressing the sheath against the keying duct in the opposite direction.
  • the key is monolithic and comprises a support cam and a support end formed as a single piece.
  • the key is pressed against the support seat by pressing the support end directly against the support seat, in the direction of the fitting direction.
  • the sheath is pressed against the keying duct by pressing the support cam against the housing duct, in the opposite direction to the fitting direction.
  • the support cam and the support end are made of a single piece, namely the key, to facilitate the manufacture of the keying device.
  • this key can be manufactured in a single operation, to form both the support cam and the support end in a single piece, for example by forging within the same mold.
  • it is not necessary to provide several separate molds to form the support cam and the support end.
  • the sheath is monolithic, the outer wall and the housing duct being formed as a single piece.
  • the support cam is pressed against the housing duct without an intermediate piece between the key and the sheath.
  • the housing duct is coated with a lubricant.
  • the bearing seat comprises two primary faces, each primary face being oriented obliquely, facing the other primary face and in the opposite direction to the fitting direction.
  • the bearing end comprises two secondary faces, the bearing end bearing against the bearing seat in that the bearing end is received between the primary faces, with each secondary face bearing against one of the primary faces.
  • the tooth comprises a retaining rib.
  • the key comprises two radial shoulders, which are formed integrally with the bearing end and which, when the key is received in the housing duct and the sleeve is received in the keying duct: capture the retaining rib therebetween, parallel to the keying axis, when the key is in the locking orientation, to immobilize the key relative to the tooth parallel to the keying axis; and are disengaged from the retaining rib when the key is in the insertion orientation.
  • the key and the tooth include rotation stops, which come into rotational abutment when the key is in the insertion orientation, to limit pivoting of the key to the insertion orientation and which come into rotational abutment when the key is in the locking orientation to limit pivoting of the key to the locking orientation.
  • the key comprises a disassembly groove, which is provided along the bearing end.
  • the disassembly groove is: disengaged from the bearing seat, when the key is in the insertion orientation, so that the key can be extracted from the housing duct by inserting a disassembly tool into the disassembly groove; and turned against the bearing seat, when the key is in the locking orientation.
  • the key defines a joint plane, which passes through the support cam and the support end, the support cam and the support end being undercut on either side of the joint plane.
  • the key comprises an actuating head, configured to be coupled with an actuating tool, to actuate the key by pivoting between the insertion orientation and the locking orientation, the actuating head being formed integrally with the bearing cam and the bearing end and protruding from the sleeve when the key is received in the housing duct.
  • the actuating head is undercut on either side of the joint plane.
  • the actuating head comprises an actuating notch and two fingers, which are arranged on either side of the actuating notch to delimit the actuating notch, the actuating notch and the two fingers being crossed by the joint plane and being undercut on either side of the joint plane.
  • the tooth comprises a keying orifice, within which the keying conduit opens when the tooth is received on the tooth holder, the bearing seat being formed on an edge of the keying orifice.
  • the wear assembly further comprises a plug, which is configured to close the keying orifice by capping the keying device while the sleeve is received in the keying conduit and the key is received in the housing conduit in the locking orientation.
  • THE figures 1 to 10 show a wear assembly according to one embodiment of the invention, comprising a tooth 1, a tooth holder 3, a sleeve 5 and a key 7.
  • the sleeve and the key 7 together constitute a keying device.
  • the wear assembly preferably comprises a plug 9, visible on the figures 2 , 3 And 10 .
  • There figure 1 also shows an actuating tool 11, schematically, a disassembly tool 14 and, shown partially in dotted lines, a bucket 13.
  • Bucket 13 belongs to a public works or mining machine.
  • works machine is meant, for example, a shovel, an excavator, a backhoe loader, or any construction machine of the same type.
  • extraction machine is meant, for example, a loader, an LHD ("load-haul-dump"), or any other machine of the same type.
  • the term “bucket” applies to buckets, skips and other receptacles equipped on such machines, capable of scraping, collecting and/or moving materials, preferably coming from the ground, with a view to their removal from a given location to others.
  • Bucket 13 forms a bin with an access opening which is, for example, rectangular in shape.
  • the access opening is delimited by four edges, including an edge 131 visible on the figure 1 , on which the wear assembly is intended to be fixed.
  • edges there may be an attack blade, here formed by the edge 131.
  • this edge 131 is located in the lower part or in the upper part of the bucket 13 and is oriented parallel to the ground.
  • the tooth holder 3 is intended to be fixed on the edge 131 of the bucket 13 permanently and to receive the tooth 1 to support it in a removable manner, in order to be able to replace the tooth 1 when it is worn.
  • a fitting direction D31 is defined, which is fixed relative to the tooth holder 3.
  • the direction D31 is directed towards inside the bucket 13, being perpendicular to the edge on which the tooth holder 3 is fixed.
  • the direction D31 is directed from the tooth 1 towards the tooth holder 3.
  • the tooth holder 3 comprises a base 31, by means of which the tooth holder 3 is fixed to the bucket 13, in particular to the edge 131.
  • the base 31 has for example a clamp shape which straddles the edge 131, as shown in the figure 1 .
  • the base 31 is preferably welded onto the edge 131.
  • the tooth holder 3 comprises a fitting nose 32, for receiving the tooth 1 by fitting the tooth onto the nose 32, in the direction D31.
  • the figure 2 shows tooth 1 fitted onto tooth holder 3.
  • the nose 32 and the base 31 are arranged successively along the direction D31.
  • the nose 32 and the base 31 are integral.
  • the nose 32 is directed in the opposite direction to the direction D31.
  • the tooth holder 3 comprises a keying duct 33, which passes through the tooth holder 3 from one side to the other.
  • the keying duct 33 passes through the nose 32.
  • the duct 33 extends along a keying axis X33, fixed relative to the tooth holder 3, and which is perpendicular to the direction D31, or at least transverse relative to the direction D31.
  • the duct 33 is coaxial with the axis X33.
  • the keying duct 33, and, in particular, the axis X33 are parallel to the edge 131, when the tooth holder 3 is fixed on the bucket 13.
  • the keying duct 33 has, on one side of the tooth holder 3, an emerging end 34 and, on the other side of the tooth holder 3, an emerging end 35, visible on the figure 3 .
  • the tooth holder 3 is monolithic, in that the base 31, the nose 32 and the conduit 33 are formed in one piece.
  • the tooth holder is made of steel, raw from casting or forging, or cast then machined, or forged then machined.
  • the tooth 1 comprises a working end 15, by means of which the tooth 1 is intended to work the material worked by the bucket 13, when the tooth is received on the bucket 13 by means of the tooth holder 3.
  • the working end 15 serves to scrape, to prick the material and/or to impact the material worked.
  • the end 15 here forms a slightly flattened point, but could have another shape depending on the characteristics of the material to be worked and the work to be carried out, in particular a more pointed or more flattened shape, or a double-point shape.
  • the tooth 1 in order to be able to be fitted onto the tooth holder 3 in the direction D31, the tooth 1 comprises a cavity 16, an ear 17 and, preferably, an ear 18, which are complementary with the nose 32.
  • the cavity 16 opens in the direction D31.
  • the cavity 16 extends partly inside the working end 15, in the opposite direction to the direction D31.
  • a male part 36 belonging to the nose 32 is received within the cavity 16, the cavity 16 and the male part 36 being complementary.
  • the male part 36 and the cavity 16 are of generally pyramidal or truncated cone shape for their contact zone, this shape being divergent in the direction D31.
  • This particular fitting method means that tightening tooth 1 against tooth holder 3 in direction D31 firmly and without play secures the tooth on tooth holder 3, ensuring precise centering of tooth 1.
  • the lugs 17 and 18 are directed in the direction D31, from the working end 15.
  • the lugs 17 and 18 project in the direction D31 from an edge of the cavity 16.
  • the lugs 17 and 18 are distributed laterally, opposite one another, so as to extend on either side of the nose 32 when the tooth 1 is fitted onto the tooth holder 3.
  • the lug 17 covers the end 34 of the conduit 33 and the lug 18 covers the end 35.
  • the lugs 17 and 18 are crossed by the axis X33 when the tooth 1 is fitted.
  • the ear 17 comprises a keying orifice 19, which passes through the ear 17 from one side to the other.
  • the keying orifice 19 is crossed by the axis X33, falling in alignment with the end 34 of the conduit 33.
  • the ear 18 comprises a keying orifice 20, which passes through the ear 18 from one side to the other.
  • the keying orifice 20 is crossed by the axis X33, falling in alignment with the end 35 of the conduit 33.
  • the nose 32 comprises a notch 37, formed in a hollow, to accommodate the ear 17 when the tooth 1 is fitted.
  • the notch 37 is positioned in the direction D31 relative to the male part 36, at the boundary between the nose 32 and the base 31.
  • An edge of the notch 37, delimiting the notch 37, extends around the end 34. When the tooth 1 is fitted, the edge of the notch 37 extends around the ear 17.
  • the nose 32 comprises a notch 38, formed in a hollow, to accommodate the lug 18 when the tooth 1 is fitted.
  • the notch 38 is positioned in the direction D31 relative to the male part 36, at the boundary between the nose 32 and the base 31.
  • An edge of the notch 38, delimiting the notch 38, extends around the end 35.
  • the notches 37 and 38 are arranged on either side of the tooth holder 3, being crossed by the axis X33. When the tooth 1 is fitted, the edge of the notch 37 extends around the lug 17.
  • the tooth 1 comprises a support seat 21, which is here formed in the orifice 19.
  • the support seat 21 occupies for example only a portion of the circumference of the orifice 19 around the axis X33, namely the portion in the direction D31.
  • the seat 21 is turned in the opposite direction to the direction X33.
  • the seat 21 forms two faces 22, called “primary faces”.
  • the faces 22 are oblique to each other, that is to say are oriented in a “V”.
  • the faces 22 are opposite each other, so as to provide a receiving space between them.
  • the faces 22 are at the same height along the axis X33, being turned towards the axis X33.
  • the faces 22 are then advantageously parallel to the axis X33.
  • the faces 22 are oriented so as to converge along the direction D31.
  • the faces 22 are turned in the opposite direction to the direction D31.
  • the faces 22 are symmetrical with respect to a plane parallel to the direction D31 and to the axis X33.
  • the faces 22 are substantially planar.
  • the faces 22 are inclined with respect to each other by an angle of 60 degrees, each face 22 being oriented at an angle of 30 degrees with respect to the direction D31.
  • the tooth 1 is monolithic, in that the end 15, the cavity 16, the ears 17 and 18 and the keying holes 19 and 20 are formed in one piece.
  • the tooth is made of steel, raw from casting or forging, or cast then machined, or forged then machined.
  • the fitting of the tooth 1 on the tooth holder 3 completely immobilizes the tooth 1 on the tooth holder 3, except that the tooth 1 is not retained for its translation relative to the tooth holder 3 in the opposite direction to the direction D31.
  • the complete immobilization of the tooth 1 is obtained thanks to the keying device, comprising the sleeve 5 and the key 7, as explained below.
  • Sheath 5 is visible on the figures 1 , 3 , 8 And 9 .
  • the sheath 5 is configured to be received in the keying conduit 33, as shown in the figure 3 and to receive the key 7 within it.
  • the keying device is received in the keying conduit 33 via the sheath 5.
  • the sheath 5 comprises an outer wall 51, a housing duct 52, an end 53 and an end 54.
  • the sheath 5 is monolithic, in that the outer wall 51, the housing duct 52 and the ends 53 and 54 are formed in one piece. It is provided that the sheath 5 is elastically deformable, unlike the key 7, the tooth 1 and the tooth holder 3 which are intended to be rigid.
  • the sheath 5 is for example made of elastomer, and formed by molding.
  • the sheath 5 when the sheath 5 is received in the conduit 33, the sheath 5 does not protrude from the ends 34 and 35, as shown in the figure 3 .
  • end 53 is at end 34 and end 54 is at end 35.
  • the housing duct 52 is preferably a through duct, opening out at the end 53 and at the end 54. Alternatively, the duct 52 opens out at least at the end 53.
  • the axis X33 passes through the duct 52 from the end 53 to the end 54.
  • the duct 52 is coaxial with the axis X33.
  • the outer wall 51 faces outwardly surrounding the housing duct 52, which faces inward.
  • the wall 51 connects the ends 53 and 54.
  • the outer wall 51 surrounds the housing duct from end 53 to end 54, and surrounds the axis X33 when the sheath 5 is received in the duct 33.
  • the sheath 5 is received in the conduit 33 via the external wall 51.
  • the external wall 51 is directly in contact with the keying conduit 33, preferably over all or most of the surface of the external wall 51.
  • the conduit 33 and the wall 51 are of complementary shape.
  • the external wall 51 and the conduit 33 have a shape which prevents the rotation of the sheath 5 around the axis X33, when the sheath 5 is received in the conduit 33.
  • recesses are provided on the external wall 51 to promote deformation of the sheath 5.
  • the external wall 51 is advantageously in contact over its entire surface against the conduit 33, except for these recesses.
  • the external wall 51 locally forms a raised radial groove 55, here from the end 53 over a portion of the length of the sheath 5, this groove 55 being received in a hollow radial groove 39, formed over a portion of the length of the conduit 33 from the end 34.
  • the external wall 51 forms a flat 56, which extends from the end 53 to the end 54, visible on the figures 1 And 9 , and represented by dotted transparency on the figure 8 This flat 56 is complementary with a flat formed by the conduit 33, from the end 34 to the end 35.
  • the external wall 51 and the conduit 33 have an ovoid cross-section along the axis X33, to block rotation.
  • the external wall 51 and the conduit 33 advantageously have a complementary frustoconical shape, which converges along the axis X33, from the end 34 towards the end 35, and from the end 53 towards the end 54.
  • the sheath 5 is shaped to be able to be inserted into the conduit 33 and removed from the conduit 33 along the axis X33, via the end 34, preferably in the absence of the tooth 1.
  • the complementarity of truncated shape between the external wall 51 and the conduit 33 requires that the insertion of the sheath 5 into the conduit 33 is carried out until the sheath 5 is in truncated abutment against the conduit 33 along the axis X33, which avoids positioning the sheath 5 beyond the end 35 of the conduit 33.
  • the housing duct 52 is designed to receive the key 7, so as to be able to pivot the key 7 relative to the sheath 5, between an orientation called “insertion orientation”, shown in the figures 1 , 4 And 8 , and a separate orientation, called the “lock orientation,” shown in the figures 3 And 5 .
  • insertion orientation shown in the figures 1 , 4 And 8
  • lock orientation a separate orientation, called the “lock orientation,” shown in the figures 3 And 5 .
  • FIG. 2 shows the wear assembly, while key 7 is in the locking orientation, even though key 7 is not visible on the figure 2 being hidden by the cap 9.
  • the conduit 52 opens, for the end 53, opposite the orifice 19 of the tooth 1.
  • the conduit 52 opens, for the end 54, opposite the orifice 20 of the tooth 1.
  • the conduit 52 has a shape which allows the rotation of the key 7 around an axis parallel or slightly inclined relative to the axis X33. It is expected that, in cross-section relative to the axis X33, the conduit 52 is circular in shape for the majority of its circumference.
  • a portion 57 of the circumference of the circular section of the duct 52 is ovate, that is to say in depression with a radius locally increased compared to the radius of the circular shape of the rest of the circumference. Thanks to this arrangement, the pivoting of the key 7 in the duct 52 is facilitated, because the ovate portion 57 makes it possible to reduce friction, by being radially at a distance from the key 7. In other words, thanks to the ovate portion 57, the key 7 is in contact with the duct 52 over only a portion of its circumference.
  • the conduit 52 is frustoconical and convergent, along the axis X33, from the end 53 towards the end 54, as visible in the figure 3 .
  • the sheath 5 is advantageously tapered from the end 53, so that it can be obtained in a single molding operation, in a single mold, without subsequent reshaping of the sheath 5 or assembly.
  • This tapered shape is reflected for example by the aforementioned conicity of the external wall 51 and the duct 52.
  • the mold impressions are displaced relative to each other along a mold opening axis passing through the duct 52, parallel to the axis X33. This makes it possible to obtain that the sheath is monolithic by being formed in the same elastically deformable material, such as an elastomer.
  • the housing duct 52 To facilitate the pivoting of the key 7 in the housing duct 52, it is preferable to coat the housing duct 52 with a lubricant, for example by carrying out lifetime lubrication. This is useful in particular when the duct 52 is formed in one piece with the external wall 51, with the elastically deformable material. Then, the pivoting of the key 7 is carried out without an intermediate piece between the key 7 and the sheath 5. However, pivoting can also be provided without lubricant.
  • the sheath 5 is not monolithic, in that a portion or the entirety of the conduit 52 is formed by a rigid part, for example made of metal, while the remainder of the sheath 5, including the external wall 51, is formed with the elastically deformable material, for example elastomer.
  • the rigid part then serves as a bearing for the pivoting of the key 7.
  • the elastomer is overmolded onto the rigid part forming the conduit 52, the rigid part being adhered to the elastomer.
  • the sheath 5 is made of elastomer within which a metallic or fibrous reinforcement is embedded, to structurally reinforce the sheath 5 and improve its durability.
  • the key 7 defines an axis X71 and an axis X72 which are not coincident, preferably parallel if not slightly inclined relative to each other.
  • the key 7 comprises, in this order following the axis X71, a distal end 73, a support cam 71, a support end 72 and an actuating head 74.
  • the support cam 71 is coaxial with the axis X71 while the distal end 73 and the head 74 are coaxial with an axis X72, parallel and not coincident with the axis X71.
  • the cam 71 is offset relative to the bearing end 72 and, preferably, relative to the distal end 73 and to the head 74.
  • the ends 72 and 73 are separated by the cam 71.
  • the cam 71 and the head 74 are separated by the end 72.
  • the key 7 is entirely monolithic, in that all parts of the key 7 are formed in one piece.
  • the support cam 71 is made in one piece with the support end with the support end 72, and preferably with the end 73, with the head 74, and with all parts of the key 7 described here.
  • the key 7 is made entirely of steel, as forged, without subsequent machining.
  • the key 7 is preferably entirely formed by a single forging operation, with introduction of metal in the form of a billet, into a single mold.
  • no assembly operation and no machining or other subsequent rework is carried out, except possibly for a burr formed at the joint plane P7 following forging. At the very least, the need to rework the key 7 following forging is reduced. The manufacture of the key 7 is therefore facilitated.
  • the key 7 may be obtained by casting rather than forging.
  • the key 7 defines a joint plane P7, which passes through the support cam 71, the support end 72, and preferably, the actuating head 74 and the distal end 73, which are undercut on either side of the joint plane P7.
  • the cut is made along the plane P7, then coincident with the plane II.
  • the axes X71 and X72 are included in the plane P7.
  • the key 7 is designed to be able to be formed by a mold which comprises a first impression, for forming the entire portion of the key 7 on one side of the plane P7, and a second impression, for forming the entire portion of the key 7 on the other side of the plane P7, the two impressions being joined at the plane P7 during forging.
  • the key 7 is designed to be received in the sheath 5, in particular in the conduit 52, as particularly visible in the figure 3
  • the key 7 is received in the duct 52 in that the support cam 71 is received inside the duct 52 and in that, if the tooth 1 is fitted, the end 72 and the head 74 are received in the orifice 19 and the end 73 is received in the orifice 20.
  • the key 7 does not protrude from the tooth 1 along the axis X33, in particular, the end 72 and the head 74 are entirely received in the orifice 19 and the duct 33, and the end 73 is entirely received in the orifice 20 and the duct 33.
  • the cam 71 is entirely received in the duct 33 without protruding therefrom along the axis X33.
  • the key 7 can be pivoted between the insertion orientation and the locking orientation relative to the sleeve 5, by means of the head 74. To effect this pivoting, it is provided that the key 7 makes less than one complete revolution about the axis X33 relative to the sleeve 5 and the tooth holder 3. For example, the key 7 makes a half revolution. In the example, when the key 7 is in the insertion orientation, the axis X71 is in the direction D31 relative to the axis X72, and when the key is in the locking orientation, the axis X72 is in the direction D31 relative to the axis X71.
  • the cam 71 protrudes in the direction D31 relative to the end 73, and the end 72 protrudes in the opposite direction of the direction D31 relative to the cam 71.
  • the cam 71 protrudes in the opposite direction of the direction D31 relative to the end 73, and the end 72 protrudes in the direction D31 relative to the cam 71.
  • the joint plane P7 is parallel to the direction D31.
  • the end 73 is of generally cylindrical shape with a circular base, centered on the axis X72, at least over a part of its length along the axis X72.
  • the end 73 is tapered on either side of the plane P7, being crossed by the plane P7.
  • the cam 71 has a shape of revolution centered on the axis X71, for the majority of its circumference around the axis X71.
  • the cam 71 has a support portion 81 and a dorsal portion 82, both crossed by the joint plane P7 and extending over the entire length of the cam 71, to connect the end 72 to the end 73.
  • the portion 81 protrudes radially from the end 73, parallel to the plane P7, while the portion 82 is in the extension of the end 73. In the insertion orientation, the portion 81 is directed in the direction D31, while the portion 82 is opposite.
  • the portion 81 is directed opposite the direction D31, while the portion D82 is directed in the direction D31.
  • the cam 71 is undercut on either side of the plane P7, being crossed by the plane P7, including the portions 81 and 82.
  • the end 72 comprises a support portion, forming two faces 83, and a dorsal portion 84.
  • the dorsal portion 84 and the support portion forming the faces 83 are both crossed by the joint plane P7.
  • Faces 83 called “secondary faces” are visible on the figure 6 , one of the faces 83 is visible on the figure 1 while the other side being visible on the figure 7 .
  • the faces 83 are complementary to the faces 22 of the seat 21 formed by the tooth 1, as explained below.
  • the faces 83 are symmetrical with respect to the plane P7.
  • the faces 83 are substantially planar.
  • the faces 83 are arranged at the same height along the axis X72.
  • the faces 83 are oriented in a “V” shape, that is to say are oriented so as to converge from the axis X72, on either side of the plane P7, being turned away from each other.
  • the faces 83 are inclined with respect to each other by an angle of 60 degrees, each face 83 being oriented at an angle of 30 degrees with respect to the joint plane P7.
  • the bearing portion of the end 72, forming the faces 83 is turned away from the bearing portion 81, around the axis X71 and/or the axis X72.
  • the bearing portion of the end 72, forming the faces 83 is turned to the same side as the dorsal portion 82.
  • the dorsal portion 84 is preferably semi-cylindrical, extending the support portion 81 of the cam 71.
  • the end 72 is tapered on either side of the plane P7, being crossed by the plane P7, including the support portion forming the faces 83 and the dorsal portion 84.
  • the bearing portion forming the faces 83 is directed in the opposite direction to the direction D31, while the portion 84 is directed in the direction D31.
  • the bearing portion forming the faces 83 is directed in the direction D31, while the portion 84 is in the opposite direction.
  • the key 7 can be slid relative to the sheath 5 along the axis X33 to be removed or inserted into the sheath 5, while the sheath is received in the conduit 33, whether or not the tooth 1 is fitted onto the tooth holder 3.
  • the insertion or removal of the key 7 is carried out through the orifice 19 of the tooth 1.
  • the key 7, when it is in the insertion orientation slides through the orifice 19, the conduit 52 and the orifice 20, without deformation of the sheath 5 and without coming into contact with the tooth 1, or without pressing against the tooth 1.
  • the end 73 is provided to be radially thinner than the cam 71 to pass through the conduit 52 without difficulty, while the cam 71 is radially thicker, to be in direct contact with the conduit 52, substantially around the entire periphery of the conduit 52, except on the possible ovate portion 57 which is set back relative to the cam 71, as shown in the figure 8 where the key 7 is cut at the cam 71.
  • the support portion 81 of the support cam 71 is directed in the direction D31 and the dorsal portion 82 is turned in the opposite direction.
  • the cam 71 being radially thicker than the end 73, the cam 71 forms an axial shoulder 79 near the end 73, which limits the position of the key 7 relative to the tooth 1, parallel to the axis X33, by coming to bear against the tooth 1, in particular against the ear 18, when the key 7 is inserted into the sleeve 5.
  • the axial positioning of the key 7 is therefore particularly precise, as shown in the figure 3 .
  • the distal end 73 is centered in the port 20.
  • the bearing portion of the bearing end 72 comprising the faces 83, is facing away from the seat 21, in the opposite direction to the direction D31, as shown in the figures 1 And 4 .
  • the portion bearing end 72 is radially spaced from the tooth, in particular is radially spaced from the orifice 19.
  • the dorsal portion 84 is not in support, or is in contact without support, against the primary faces 22 of the seat 21, being received between the primary faces 22.
  • the axes X71 and X33 are coincident. It is advantageously provided that the cam 71 is thinner than the end 72 and/or the head 74, so that the cam 71 passes through the orifice 19 without difficulty. The end 72 and/or the head 74 being radially wider than the cam 71, the risk of inserting the key 7 in reverse is reduced.
  • pivoting the key 7 into the locking orientation causes the keying device to clamp the tooth 1 against the tooth holder 3 in the direction D31.
  • the key pulls on the tooth 1 in the direction D31 relative to the tooth holder 3, so as to press the tooth 1 against the tooth holder 3 in this direction D31.
  • the tooth 1 is then firmly immobilized on the tooth holder 3.
  • the end 72 of the key 7 bears against the bearing seat 21 of the tooth in the direction D31 and that the bearing cam 71 bears against the conduit 33, via the sleeve 5, in the opposite direction to the direction D31.
  • the end 73 bears against the orifice 20 of the tooth in the direction D31. It is provided that there is no intermediate part between the key 7 and the tooth 1 for the bearing. In other words, the end 72 and the end 73 are directly in contact with the tooth 1, in particular respectively with the seat 21 and with the orifice 20, to exert the bearing in the direction D31.
  • the sheath 5 for the support.
  • the support cam 71 is directly in contact with the conduit 52 of the sheath 5
  • the sheath is directly in contact with the conduit 33 of the tooth holder 3, in the opposite direction in the direction D31.
  • the sheath is interposed between the cam 71 and the conduit 33.
  • each secondary face 83 of the end 72 comes to bear flat against one of the primary faces 22 of the seat 21 of the tooth 1, the faces 83 being received between the faces 22.
  • the faces 22 being arranged obliquely while facing one another, the end 72 and the tooth 1 are centered relative to one another, perpendicular to the plane P7, thanks to this bearing.
  • This opposite oblique bearing of the faces 22 and 83 also results from an overall bearing of the end 72 in the direction of the direction D31 against the tooth 1.
  • This bearing of the faces 22 and 83 also produces a locking of the pivoting of the key 7 relative to the tooth holder 3, which prevents, during use of the wear assembly, the key from accidentally returning to the insertion orientation.
  • the application of sufficient torque to the head 74 of the key 7 allows the key 7 to be pivoted back into the insertion orientation to remove the key 7 and carry out the replacement of the tooth 1.
  • the support portion of the support end 72 is semi-cylindrical and centered on the axis X72, while the seat has a complementary shape.
  • the portion 84 is oriented away from the seat 21, being directed in the opposite direction to the direction D31. Then, the portion 84 extends radially away from the orifice 19.
  • the end 73 comes to bear against a portion of the orifice 20, in the direction D31.
  • This support being here a cylinder-cylinder support, it tends to obtain a centering of the key 7 and the tooth 1 relative to each other perpendicular to the plane P7. It is advantageously provided that the end 73 completely closes the orifice 20, apart from the rotational clearance, in order to prevent the introduction of foreign bodies through the orifice 20 towards the interior of the wear assembly during use.
  • the support portion 81 of the cam 71 comes to bear against a portion 59 of the conduit 52 in the opposite direction to the direction D31.
  • the portion 59 is preferably adjacent to the portion 57.
  • the sheath 5 is elastically deformed at the portion 59 by being crushed between the portion 81 of the cam 71 and the conduit 33.
  • the figure 3 shows a hatched area representing the offset of portion 59 in the opposite direction of direction D31, relative to its initial position referenced 59A.
  • figure 8 shows portion 59 while the sheath is not deformed.
  • This deformation of the sheath 5 causes the sheath 5 to push the key 7 in the direction D31, the key 7 then driving the tooth 1 in the direction D31 to tighten it against the tooth holder, via the ends 72 and 73.
  • the ends 72 and 73 are pressed respectively against the seat 21 and against the orifice 20 under the elastic action of the sheath 5.
  • This elasticity makes it possible to take up any play likely to be created parallel to the direction D31 during the use of the wear assembly, by wear or matting of the tooth 1 and/or the tooth holder 3 by matting and/or abrasion. Even when the wear assembly is worn, the tightening of the tooth 1 is maintained.
  • the support of the key 7 against the tooth 1 in the direction D31 is advantageously distributed on either side of the tooth 1, on the ears 17 and 18, respectively by pressing the ends 72 and 73 of the key.
  • the key 7 presses against the conduit 33 in the opposite direction via the cam 71, between the ends 72 and 73.
  • the tooth 1 comprises a retaining rib 23, for axially retaining the key 7 when it is received in the locking orientation, while not opposing the insertion and removal of the key when it is in the insertion orientation.
  • the retaining rib 23 is formed on the edge of the keying orifice 19.
  • the rib 23 is formed between the two faces 22 of the seat 21, thus connecting the faces 22 together.
  • the rib 23 is at the same height as the faces 22 along the axis X33. More generally, it is advantageously provided that the rib 23 occupies only a portion of the orifice 19 so that the key 7 cooperates axially with the rib 23 only in the locking orientation and not in the insertion orientation.
  • the rib when the tooth 1 is received on the tooth holder, the rib is directed in the opposite direction to the direction D31, being formed on a portion of the orifice 19 on the side of the direction D31.
  • the key 7 comprises a radial shoulder 85 and a radial shoulder 86, which are spaced apart from each other along the axis X71.
  • the shoulders 85 and 86 are formed at the bearing end 72. More precisely, the shoulder 85 axially connects the cam 71 to the bearing end 72 and the bearing end 72 connects the shoulder 85 to the shoulder 86.
  • the faces 83 connect the shoulders 85 and 86 to each other.
  • Each radial shoulder 85 and 86 occupies only a portion of the key 7 around the axis X71, so that the rib 23 cooperates with the shoulders 85 and 86 only in the locking orientation and not in the insertion orientation.
  • the two radial shoulders 85 and 86 project radially from the bearing end 72 in the same direction.
  • the shoulders 85 and 86 are directed along the direction X31.
  • the shoulders 85 and 86 are directed in opposite directions.
  • the shoulders 85 and 86 are advantageously tapered on either side of the plane P7, both being crossed by the plane P7.
  • the rib 23 is captured between the two shoulders 85 and 86, to immobilize the key 7 along the axis X33 relative to the tooth 1 and the tooth holder 3. More precisely, the shoulder 85 comes to bear against the rib 23 parallel to the axis X33, in the direction of withdrawal of the key 7, to prevent said withdrawal. The shoulder 86 comes to bear against the rib 23 parallel to the axis X33, in the direction of insertion of the key 7, to ensure that the key 7 is not inserted too far into the sleeve 5.
  • the shoulders 85 and 86 are disengaged from the rib 23, by being turned away from the rib 23, to allow the sliding of the key 7 parallel to the axis X33 relative to the sheath 5. In other words, the shoulders 85 and 86 are not placed in axial support against the rib 23 when the key 7 is slid and therefore do not oppose this sliding.
  • the key 7 comprises a stop groove 87A, which is for example formed radially in relief at the level of the bearing end 72.
  • the groove 87A is preferably formed on a portion of the key 7, which is radial relative to the axis X72, the groove 87A projecting perpendicularly relative to the plane P7, around the axis X72.
  • the groove 87A is positioned a quarter turn of the key 7 relative to the portion carrying the faces 83.
  • the groove 87A is directed perpendicularly relative to the direction D31, towards the underside of the tooth 1 as shown in the figure 4 , i.e., towards the outside of the bucket 13, whereas in the locking orientation, the groove 87A is directed in the opposite direction, as shown in the Figure 5 , that is to say towards the top of tooth 1 and towards the inside of bucket 13.
  • the groove 87A is undercut on one side only of the plane P7.
  • the tooth 1 comprises a stop notch 24 and a stop notch 25, here formed on the edge of the keying orifice 19.
  • the two notches 24 and 25 are distributed diametrically opposite in the orifice 19, with respect to the axis X33.
  • the two notches 24 and 25 are advantageously turned in the opposite direction to the direction D31.
  • the groove 87A and the notches 24 and 25 form rotation stops to limit the pivoting travel of the key 7 from the insertion orientation to the locking orientation, when the key 7 is received in the sleeve 5, itself received on the tooth holder 3, and the tooth 1 is received on the tooth holder 3.
  • the groove 87A comes into rotational abutment against the notch 24 in a direct direction, to prevent the key 7 from being pivoted beyond the insertion orientation.
  • the groove 87A comes into rotational abutment against the notch 25 in an indirect direction, to prevent the key 7 from being pivoted beyond the locking orientation.
  • the pivoting of the key 7 is therefore limited to the insertion and locking orientations, being allowed to pivot only between these two orientations.
  • the sheath 5 comprises a stop notch 58A, formed at the end 53 of the sheath 5.
  • the groove 87A advantageously comes into rotational abutment against the stop notch 58A in the forward direction.
  • the shoulder 85 extends in radial projection up to the groove 87A, as clearly visible in the figure 6 .
  • the groove 87A projects axially from the shoulder 85 towards the shoulder 86.
  • the shoulder 85 is therefore advantageously radially projecting to occupy a sector of at least 90 degrees from the groove 87A, for example 135 degrees as for the present example, around the axis X72.
  • the shoulder 85 thus forms a collar which comes into axial support, in the direction of withdrawal of the key 7, both against the rib 23 and the seat 21, to occupy an interstitial space between the sleeve 5 and the tooth and reduce the risk of clogging by the introduction of foreign bodies during use of the wear assembly.
  • the shoulder 85 ends, circularly opposite the groove 87A, by a stop notch 87B.
  • the aforementioned sector is described by the shoulder 85 of the groove 87A to the stop notch 87B, around the axis X72, and here is 135 degrees. It is expected that the shoulder 85 extends around the axis X72 by connecting the groove 87A to the stop notch 87B.
  • the sheath 5 comprises a stop notch 58B, formed at the end 53 of the sheath 5.
  • the notch 87B advantageously comes into rotational abutment against the stop notch 58B in the indirect direction.
  • the shoulder 85 comes into axial support against the end 53 of the sheath 5, in the direction of insertion of the key 7.
  • this support is carried out over the entire surface of the face of the shoulder 85, which is turned towards the sheath 5, at least when the key is in the locking orientation.
  • the key 7 comprises a disassembly groove 88, visible on the figures 1 , 3 And 7 .
  • Gorge 88 is also visible on the figure 6 , being shown in broken lines, while the groove 88 is behind the shoulder 86.
  • the disassembly groove 88 is provided along the support end 72.
  • the disassembly groove 88 extends for example along a plane orthogonal to the axis X71. In other words, the groove 88 is perpendicular to the plane P7, being crossed by the plane P7 and being undercut on either side of the plane P7.
  • the groove 88 is formed in one piece with the rest of the key 7, advantageously without recourse to machining the groove 88.
  • the disassembly groove 88 is advantageously formed between the shoulder 86 and the bearing end 72.
  • the groove 88 is arranged between the two shoulders 85 and 86.
  • the groove 88 is formed in a hollow relative to the bearing end 72.
  • the groove 88 connects, for example, the faces 83 together.
  • the groove 88 is sufficiently narrow to receive the end of the disassembly tool 14, shown schematically in the figure 1 , for example the flat end of a flathead screwdriver, or a crowbar.
  • tooth 1 includes a disassembly slot 26, as visible in the figures 1 to 5 , which is formed in a hollow on the edge of the keying orifice 19.
  • the disassembly slot 26 is arranged radially in the edge of the orifice 19, in the opposite direction to the direction D31. Axially, the disassembly slot 26 opens towards the outside of the tooth 1, but is blind towards the inside of the tooth 1.
  • the groove 88 is released from the support seat 21 by being directed in the opposite direction to the direction D31.
  • the groove 88 opens into the notch 26.
  • the disassembly notch 26 is sufficiently wide to guide the flat end of the disassembly tool 14, introduced from the outside of the tooth 1, to the groove 88, under the shoulder 86, when the key 7 is in the insertion orientation.
  • the disassembly tool 14 can then reach the groove 88 via the notch 26, to slide the key 7 along the axis X33, out of the sheath 5, and thus extract it to carry out the disassembly of the tooth 1.
  • the tool 14 is used as a lever, by taking a tilting support of the tool 14 on the tooth 1, at the notch 26. The extraction of the key 7 is therefore particularly easy.
  • the groove 88 is turned against the support seat 21, that is to say is turned in the direction D31, opening out in the direction D31. Then, it is advantageously provided that the groove 88 is closed by the support seat 21, being positioned in particular between the faces 22 and against the rib 23. This limits the clogging of the groove 88 by the introduction of foreign bodies during use.
  • the actuating head 74 is configured to be coupled with the actuating tool 11, shown in the figure 1 , so that a technician actuates the key 7 by pivoting relative to the tooth holder 3, between the locking orientation and the insertion orientation, to lock or unlock the tooth 1.
  • the actuating tool 11 is here in the form of a socket, with an end complementary to the head 74 to be coupled thereto, and a standard end, for example a four-sided hollow end, which can be coupled to a ratchet wrench, a wrench or an impact driver.
  • the actuating head 74 of the key 7 is formed axially opposite the end 72, so as to open into the orifice 19 when the key 7 and the sheath are received in the tooth holder 3, as visible in the Figures 3 to 5.
  • the head 74 then protrudes from the sheath 5, along the axis X33.
  • the head 74 preferably comprises an actuating notch 89, a finger 90 and a finger 91.
  • the fingers 90 and 91 project parallel to the axis X33, in the opposite direction of the cam 71.
  • the fingers 90 and 91 are arranged diametrically opposite on either side of the axis X72, being distributed along the plane P7.
  • Each finger 90 and 91 is crossed by the plane P7, being undercut on either side of the plane P7 so that it can be formed in one piece with the rest of the key 7.
  • Radially, the fingers 90 and 91 are arranged on either side of the notch 89 to delimit it between them. Axially, the fingers 90 and 91 end at the same height along the axis X72.
  • the finger 90 delimits the notch 89. Radially on the outside, the finger 90 advantageously forms the shoulder 86. Radially on the inside, the finger 91 delimits the notch 89 while facing the finger 90. Radially on the outside, the finger 91 forms a part of the dorsal portion 84, having a semi-cylindrical shape.
  • the notch 89 is centered on the axis X72, and is oriented along a plane perpendicular to the joint plane P7 and having the axis X72 in common with the plane P7.
  • the notch 89 opens parallel to the axis X72, but also radially with respect to the axis X72, in both directions.
  • the notch 89 opens along the groove 87A.
  • the notch 89 opens at the periphery of the head 74 in a direction orthogonal to the plane P7, and also at the periphery of the head 74 in an opposite direction.
  • the notch 89 therefore passes through the key 7 diametrically from one side to the other.
  • the notch 89 extends in a hollow shape up to the height of the groove 88, or even up to the height of the faces 83.
  • the notch 89 is undercut on either side of the plane P7 so that it can be formed in one piece with the rest of the key during forging, without additional machining.
  • each finger 90 and 91 radially on the inside, forms two beveled sides, each side being arranged on one side of the plane P7 while the other side is arranged on the other side. This is particularly visible on the figure 6 , where four beveled sides are observed, forming two pairs of sides diverging on either side of the plane P7.
  • the notch 89 being particularly deep, it can always be actuated by the tool 11, even if the head 74 has been very worn during the use of the wear assembly.
  • the head 74 is coaxial with the axis X72 in particular in that the notch 89 is centered on the axis X72 and in that, advantageously, the finger 91 externally has a semi-cylindrical shape centered on the axis X72, forming part of the dorsal portion 84.
  • the tool 11 has two fingers 111 and 112, separated by a notch.
  • the finger 111 is received in the notch 89 on one side of the plane P7, between the two fingers 90 and 91, and the finger 112 is received in the notch 89 on the other side of the plane P7, between the two fingers 90 and 91.
  • the finger 90 and/or the shoulder 86 have an arrow shape, oriented radially outwards relative to the axis X72, along the plane P7.
  • the direction of the arrow visually indicates to the technician the orientation of the key 7. In the locked orientation, the arrow is directed in the direction D31, to indicate that the key 7 ensures the clamping of the tooth 1 in the direction D31.
  • the notch 89 has, on either side of the plane P7, two respective parts whose depth is different, along the axis X72.
  • the part of the notch 89 on the side of the groove 87A is less deep than the part of the notch 89.
  • pictograms may be provided, for example in relief on the tooth 1 and/or on the tooth holder 3, to visually indicate to the technician in which direction to rotate the key 7, and/or whether the key 7 is in the insertion orientation or in the locking.
  • the plug 9 is designed to close the keying orifice 19, by covering the head 74 of the key 7 and by covering the end 53 of the sheath 5, while the key 7 is in the locking orientation, being received in the sheath 5, itself received in the conduit 33.
  • the plug 9 comprises a base 95, the circumference of which corresponds to that of the orifice 19.
  • the base 95 forms a cover which, when the plug 9 is mounted, extends transversely to the axis X33.
  • the base 95 advantageously comprises a tongue 96, which is housed in the disassembly slot 26 to close it, while leaving a small interstitial space to allow the disassembly of the plug 9 using the tool 14, by lifting the plug 9 via the tongue 96.
  • the base 95 Parallel to the axis X33, the base 95 preferably comes to bear against the head 74, in particular against the fingers 90 and 91.
  • the plug 9 comprises two fingers 97, of a shape similar to the two fingers 111 and 112, separated by a notch.
  • the two fingers 97 protrude from the base 95, to be received in the notch 89.
  • One of the fingers 97 is received on one side of the plane P7, between the two fingers 90 and 91, and the other finger 97 is received in the notch 89 on the other side of the plane P7, between the two fingers 90 and 91.
  • the stopper 9 advantageously comprises a plug 98, which projects from the base 95, perpendicular to the base 95.
  • the plug 98 is arranged between the fingers 97 and the tongue 96.
  • the plug 98 is in the form of a portion of a cylinder, which is centered on the axis X72 when the plug 9 covers the key 7.
  • the plug 98 is complementary to the dorsal portion 84 of the key 7 and comes into radial support against this dorsal portion 84 when the plug 9 is mounted.
  • the plug 99 then fills a gap which is formed radially between the dorsal portion 84 and the orifice 19, which prevents clogging by the introduction of foreign bodies during use of the wear assembly.
  • the plug 9 advantageously comprises a plug 99, which projects from the base 95, perpendicular to the base 95.
  • the fingers 97 are arranged between the plugs 98 and 99.
  • the plug 99 is complementary to the shoulder 86, in the extension of one of the faces 83, and comes to bear radially against this shoulder 86 when the plug 9 is mounted.
  • the plug 99 then fills a gap which is formed radially between the shoulder 86 and the orifice 19, and axially between the seat 21 and the base 95, which prevents clogging by the introduction of foreign bodies when using the wear assembly.
  • the pins 98 and 99, the fingers 97 and/or the tongue 96 make it possible to hold the plug 9 in place on the head 74 by fitting along the axis X72.
  • the pins 98 and 99 are notched for their part intended to be in contact with the key 7, to ensure this fitting.
  • sheath 5 and the key 7 are inserted from the right side of the tooth 1 and the tooth holder 3.
  • sheath 5 and the key 7 are inserted symmetrically in the opposite direction, on the left side.

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)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sliding-Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Claims (10)

  1. Verschleißanordnung, für eine Schaufel (13) einer Abbau- oder Arbeitsmaschine, die Verschleißanordnung umfassend:
    - einen Zahnhalter (3), der dazu bestimmt ist, an der Schaufel (13) befestigt zu werden, und der einen Keilkanal (33) umfasst, der von einem Keilbolzen (X33) durchquert wird;
    - einen Zahn (1 ), der konfiguriert ist, um entlang einer Aufsteckrichtung (D31) auf den Zahnhalter (3) aufgesteckt zu werden; und
    - eine Keilvorrichtung, die Folgendes umfasst:
    • eine Hülse (5), die einen Aufnahmekanal (52) und eine Außenwand (51) umfasst, wobei die Hülse (5) konfiguriert ist, um durch die Außenwand (51) in dem Keilkanal (33) aufgenommen zu werden, wobei die Hülse (5) dann durch die Außenwand (51) in Bezug auf den Zahnhalter (3) gegen eine Drehung um die Keilachse (X33) gesichert ist, und
    • einen Keil (7), der konfiguriert ist, um in dem Aufnahmekanal (52) aufgenommen zu werden, um in Bezug auf die Hülse (5) schwenkbar zu sein zwischen:
    ◊ einer Einsetzausrichtung, wobei der Keil (7) in dem Aufnahmekanal (52) verschiebbar ist, während die Hülse (5) in dem Keilkanal (33) aufgenommen ist, und
    ◊ einer Verriegelungsausrichtung, in der, während die Hülse (5) in dem Keilkanal (33) aufgenommen ist, die Keilvorrichtung den Zahn (1) gegen den Zahnhalter (3) in der Aufsteckrichtung (D31) unter der Wirkung des Keils (7) einspannt, durch ein Andrücken des Keils (7) gegen einen zu dem Zahn (1) gehörenden Stützsitz (21) in Richtung der Einpressrichtung (D31) und ein Andrücken der Hülse (5) gegen den Keilkanal (33) in entgegengesetzter Richtung;
    dadurch gekennzeichnet, dass:
    - der Keil (7) monolithisch ist und einen Stütznocken (71) und ein Stützende (72) umfasst, die einstückig gebildet sind;
    - das Andrücken des Keils (7) gegen den Stützsitz (21) durch Andrücken des Stützendes (72) direkt gegen den Stützsitz (21) in Richtung der Aufsteckrichtung (D31) erfolgt; und
    - das Andrücken der Hülse (5) an den Keilkanal (33) durch Andrücken des Stütznockens (71) an den Aufnahmekanal (52) in entgegengesetzter Richtung zu der Aufsteckrichtung (D31) erfolgt.
  2. Verschleißanordnung nach Anspruch 1, wobei:
    - die Hülse (5) monolithisch ist, wobei die Außenwand (51) und der Aufnahmekanal (52) einstückig gebildet sind;
    - das Andrücken des Stütznockens (71) an den Aufnahmekanal (52) ohne ein Zwischenstück zwischen dem Keil (7) und der Hülse (5) erfolgt; und
    - vorzugsweise der Aufnahmekanal (52) mit einem Schmiermittel beschichtet ist.
  3. Verschleißanordnung nach einem der vorherigen Ansprüche, wobei:
    - der Stützsitz (21) zwei Primärflächen (22) umfasst, wobei jede Primärfläche (22) schräg ausgerichtet ist, indem sie der anderen Primärfläche (22) zugewandt und entgegengesetzt zu der Aufsteckrichtung (D31) ist; und
    - das Stützende (72) zwei sekundäre Flächen (83) umfasst, wobei das Stützende (72) an dem Stützsitz (21) dadurch anliegt, dass das Stützende (72) zwischen den Primärflächen (22) aufgenommen wird, wobei jede Sekundärfläche (83) an einer der Primärflächen (22) anliegt.
  4. Verschleißanordnung nach einem der vorherigen Ansprüche, wobei:
    - der Zahn (1 ) eine Halterippe (23) umfasst; und
    - der Keil (7) zwei radiale Schultern (85, 86) aufweist, die einstückig mit dem Stützende (72) gebildet sind und die, wenn der Keil (7) in dem Aufnahmekanal (52) aufgenommen ist und die Hülse (5) in dem Keilkanal (33) aufgenommen ist:
    • die Halterippe (23) untereinander parallel zu der Keilachse (X33) einfangen, wenn der Keil (7) in der Verriegelungsausrichtung ist, um den Keil (7) in Bezug auf den Zahn (1 ) parallel zu der Keilachse (X33) zu fixieren, und
    • von der Halterippe (23) freigegeben sind, wenn der Keil (7) in der Aufsteckausrichtung ist.
  5. Verschleißanordnung nach einem der vorherigen Ansprüche, wobei der Keil (7) und der Zahn (1) Drehanschläge (24, 25, 87A) umfassen, die bei Drehung in Anschlag kommen, wenn der Keil (7) in der Einsteckausrichtung ist, um das Schwenken des Keils (7) auf die Einsteckausrichtung zu begrenzen, und die in Drehanschlag kommen, wenn der Keil (7) in der Verriegelungsausrichtung ist, um das Schwenken des Keils (7) auf die Verriegelungsausrichtung zu begrenzen.
  6. Verschleißanordnung nach einem der vorherigen Ansprüche, wobei:
    - der Keil (7) eine Demontagenut (88) umfasst, die entlang des Stützendes (72) gebildet ist; und
    - wenn die Hülse (5) in dem Keilkanal (33) aufgenommen ist und der Keil in dem Aufnahmekanal (52) aufgenommen ist, die Demontagenut (88) wie folgt ist:
    • gelöst von dem Stützsitz (21), wenn der Keil (7) in der Einsetzausrichtung ist, sodass der Keil (7) durch Einführen eines Demontagewerkzeugs (14) in die Demontagenut (88) aus dem Aufnahmekanal (52) herausgezogen werden kann, und
    • gedreht gegen den Stützsitz (21), wenn der Keil (7) in der Verriegelungsausrichtung ist.
  7. Verschleißanordnung nach einem der vorherigen Ansprüche, wobei der Keil (7) eine Trennebene (P7) definiert, die den Stütznocken (71) und das Stützende (72) durchquert, wobei der Stütznocken (71) und das Stützende (72) auf beiden Seiten der Trennebene (P7) hinterschnitten sind.
  8. Verschleißanordnung nach Anspruch 7, wobei:
    - der Keil (7) einen Betätigungskopf (74) umfasst, der konfiguriert ist, um mit einem Betätigungswerkzeug (11) gekoppelt zu werden, um den Keil (7) schwenkbar zwischen der Einsteckausrichtung und der Verriegelungsausrichtung zu betätigen, wobei der Betätigungskopf (74) einstückig mit dem Stütznocken (71) und dem Stützende (72) gebildet ist und aus der Hülse (5) hervorsteht, wenn der Keil (7) in dem Aufnahmekanal (52) aufgenommen ist; und
    - der Betätigungskopf (74) auf beiden Seiten der Trennebene (P7) hinterschnitten ist.
  9. Verschleißanordnung nach Anspruch 8, wobei der Betätigungskopf (74) zum Koppeln mit dem Betätigungswerkzeug (11) eine Betätigungskerbe (89) und zwei Finger (90, 91) umfasst, die auf beiden Seiten der Betätigungskerbe (89) angeordnet sind, um die Betätigungskerbe (89) zu begrenzen, wobei die Betätigungskerbe (89) und die zwei Finger (90, 91) von der Trennebene (P7) durchquert werden und auf beiden Seiten der Trennebene (P7) hinterschnitten sind.
  10. Verschleißanordnung nach einem der vorherigen Ansprüche, wobei:
    - der Zahn (1) eine Keilöffnung (19) umfasst, in die sich der Keilkanal (33) öffnet, wenn der Zahn (1) auf dem Zahnhalter (3) aufgenommen ist, wobei der Stützsitz (21) an einem Rand der Keilöffnung (33) gebildet ist; und
    - die Verschleißanordnung ferner einen Stopfen (9) umfasst, der konfiguriert ist, um die Keilöffnung (19) zu verschließen, indem er die Keilvorrichtung abdeckt, während die Hülse (5) in dem Keilkanal (33) aufgenommen ist und der Keil in der Verriegelungsausrichtung in dem Aufnahmekanal (52) aufgenommen ist.
EP22823600.6A 2021-12-06 2022-12-05 Verschleissanordnung für einen eimer einer extraktions- oder arbeitsmaschine Active EP4444956B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2113016A FR3129957B1 (fr) 2021-12-06 2021-12-06 Ensemble d’usure, pour un godet d’une machine d’extraction ou de travaux
PCT/EP2022/084465 WO2023104736A1 (fr) 2021-12-06 2022-12-05 Ensemble d'usure, pour un godet d'une machine d'extraction ou de travaux

Publications (3)

Publication Number Publication Date
EP4444956A1 EP4444956A1 (de) 2024-10-16
EP4444956C0 EP4444956C0 (de) 2025-10-22
EP4444956B1 true EP4444956B1 (de) 2025-10-22

Family

ID=80225593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22823600.6A Active EP4444956B1 (de) 2021-12-06 2022-12-05 Verschleissanordnung für einen eimer einer extraktions- oder arbeitsmaschine

Country Status (10)

Country Link
US (1) US20250034846A1 (de)
EP (1) EP4444956B1 (de)
KR (1) KR20240115828A (de)
CN (1) CN118355171A (de)
AU (1) AU2022404606A1 (de)
CA (1) CA3239033A1 (de)
FR (1) FR3129957B1 (de)
MX (1) MX2024006875A (de)
WO (1) WO2023104736A1 (de)
ZA (1) ZA202404000B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025136617A1 (en) * 2023-12-22 2025-06-26 Esco Group Llc Lock, wear member and wear assembly having a lock

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0203856L (sv) * 2002-12-23 2004-02-10 Combi Wear Parts Ab Slitdelssystem för lösbar montering av slitdelar till en markberedningsmaskins verktyg
FR2884841B1 (fr) * 2005-04-26 2008-12-05 Predac Sarl Procede et dispositif de liaison entre une piece d'usure et son support mis en jeu sur les equipements de manutention de materiaux par les engins de travaux publics
RU2546179C2 (ru) * 2009-12-11 2015-04-10 Си-Кью-Эм-Эс ПТИ ЛТД Замок в сборе для крепления износного элемента экскаватора
FR3011013B1 (fr) 2013-09-20 2015-10-30 Safe Metal Systeme mecanique comprenant un dispositif de liaison entre une piece d'usure et son support, et godet d'engin de travaux publics
US20170328035A1 (en) * 2016-05-12 2017-11-16 Hensley Industries, Inc. Connector systems in earth engaging wear member assemblies
US11492784B2 (en) * 2019-04-15 2022-11-08 Hensley Industries, Inc. Position-biased locking pin assembly for a ground engaging wear member

Also Published As

Publication number Publication date
WO2023104736A1 (fr) 2023-06-15
CA3239033A1 (fr) 2023-06-15
CN118355171A (zh) 2024-07-16
EP4444956C0 (de) 2025-10-22
ZA202404000B (en) 2025-08-27
US20250034846A1 (en) 2025-01-30
EP4444956A1 (de) 2024-10-16
KR20240115828A (ko) 2024-07-26
FR3129957B1 (fr) 2023-12-15
FR3129957A1 (fr) 2023-06-09
MX2024006875A (es) 2024-06-20
AU2022404606A1 (en) 2024-06-06

Similar Documents

Publication Publication Date Title
EP2011927B1 (de) Verschlußkeil und Verschlußvorrichtung mit solch einem Keil.
CA2456014C (fr) Assemblage pour retenir un flasque annulaire contre une face radiale d'un disque
FR2962059A1 (fr) Outil de coupe rotatif
EP3047074B1 (de) Mechanisches system mit verbindungsvorrichtung zwischen einem verschleissteil und stütze dafür sowie schaufel einer tiefbaumaschine
CA2845669A1 (fr) Systeme mecanique comprenant un dispositif de liaison entre une piece d'usure et son support, godet d'engin de travaux publics et procede de mise en oeuvre d'un tel systeme
CA2606243A1 (fr) Procede et dispositif de liaison entre une piece d'usure et son support mis en jeu sur les equipements de manutention de materiaux par les engins de travaux publics
CA2845667A1 (fr) Systeme mecanique comprenant un dispositif de liaison entre une piece d'usure et son support, godet d'engin de travaux publics et procede de mise en oeuvre d'un tel systeme
CA2845668A1 (fr) Systeme mecanique comprenant un dispositif de liaison entre une piece d'usure et son support, godet d'engin de travaux publics et procede de mise en oeuvre d'un tel systeme
EP3300968B1 (de) Bestandsadapter eines scheibenwischersystems
EP4444956B1 (de) Verschleissanordnung für einen eimer einer extraktions- oder arbeitsmaschine
EP3184379B1 (de) Kappe und antriebsarm für eine reinigungsvorrichtung eines kraftfahrzeugs
CA2984989C (fr) Dispositif, systeme et procede de protection d'une arete de godet
FR3055861B1 (fr) Adaptateur pour la connexion d'un balai d'essuyage a un bras d'entrainement d'un systeme d'essuyage pour vehicule automobile
EP0665363B1 (de) Verbindungsvorrichtung für angrenzende Tunnelausbausegmente einer Tunnelauskleidung
EP0498732B1 (de) Einheit aus Werkzeug und Werkzeugträger für Tunnelvortriebsmaschinen
FR3066973B1 (fr) Cle de blocage d'une timonerie, sous-ensemble de timonerie et timonerie presentant une telle cle de blocage et procede de mise en place d'une telle cle de blocage sur une timonerie
FR2802234A1 (fr) Barillet de surete muni d'un moyen anti-crochetage
FR2802233A1 (fr) Barillet de surete muni d'un moyen anti-vibreur
EP3112228A1 (de) Organ für ein verbindungssystem eines wischerblatts an einen scheibenwischerarm
BE1022982B1 (fr) Ensemble de dent et adaptateur, systeme de verrouillage
WO2020114828A1 (fr) Adaptateur pour la connexion d'un balai d'essuyage a un bras d'entrainement d'un systeme d'essuyage pour vehicule automobile
FR2517341A2 (fr) Dent amovible pour excavateur
FR2572782A1 (fr) Bague d'etancheite a levre

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20240605

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20250703

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: F10

Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE)

Effective date: 20251022

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602022023617

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

U01 Request for unitary effect filed

Effective date: 20251104

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT RO SE SI

Effective date: 20251110

U20 Renewal fee for the european patent with unitary effect paid

Year of fee payment: 4

Effective date: 20251114