WO2023104736A1 - Ensemble d'usure, pour un godet d'une machine d'extraction ou de travaux - Google Patents
Ensemble d'usure, pour un godet d'une machine d'extraction ou de travaux Download PDFInfo
- Publication number
- WO2023104736A1 WO2023104736A1 PCT/EP2022/084465 EP2022084465W WO2023104736A1 WO 2023104736 A1 WO2023104736 A1 WO 2023104736A1 EP 2022084465 W EP2022084465 W EP 2022084465W WO 2023104736 A1 WO2023104736 A1 WO 2023104736A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- key
- tooth
- sheath
- received
- keying
- Prior art date
Links
- 238000000605 extraction Methods 0.000 title claims description 5
- 238000003780 insertion Methods 0.000 claims abstract description 52
- 230000037431 insertion Effects 0.000 claims abstract description 52
- 238000003825 pressing Methods 0.000 claims description 12
- 239000000314 lubricant Substances 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000295 complement effect Effects 0.000 description 16
- 239000000463 material Substances 0.000 description 13
- 238000005242 forging Methods 0.000 description 10
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- KJLPSBMDOIVXSN-UHFFFAOYSA-N 4-[4-[2-[4-(3,4-dicarboxyphenoxy)phenyl]propan-2-yl]phenoxy]phthalic acid Chemical compound C=1C=C(OC=2C=C(C(C(O)=O)=CC=2)C(O)=O)C=CC=1C(C)(C)C(C=C1)=CC=C1OC1=CC=C(C(O)=O)C(C(O)=O)=C1 KJLPSBMDOIVXSN-UHFFFAOYSA-N 0.000 description 1
- 208000004188 Tooth Wear Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing 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
- 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
- E02F9/2808—Teeth
- E02F9/2858—Teeth characterised by shape
-
- 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
Definitions
- TITLE Wear set, for a bucket of an extraction or works machine
- the present invention relates to a wear assembly, for a bucket of a mining or works machine.
- the invention relates to the field of equipment for mining and working machines, in particular relating to buckets, buckets or other receptacles used both for working, in particular digging, scraping and/or picking up, a material and moving this material.
- the material is generally a heavy, hard, gritty 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. It provides the possibility of being able to individually replace each tooth when it is worn.
- FR 3 011 013 A1 discloses a bucket, with a support and a tooth, which can be locked on the support using a link device.
- the connecting device comprises an elastically deformable sheath, a metal key, a metal notched 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 movable in rotation together in an internal cavity of the sheath, between a configuration for inserting the key into the cam and one or more locking arrangements, where the key presses radially against the tooth, while the cam presses against the quill so that the quill presses against the carrier housing, to form a mating connection of the tooth and the carrier .
- the internal cavity of the sheath also receives the metal crescent, which serves as a bearing to support the rotation of the key-cam assembly.
- the seals are arranged on either side of the sheath to ensure watertightness.
- This known connecting device is generally satisfactory, 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 notch 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 to the ease of replacing the tooth when it is worn.
- the subject of the invention is 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 sheath, which comprises a housing conduit and an outer wall, the sheath being configured to be received in the keying conduit via the outer wall, the sheath then being fixed in rotation relative to the tooth carrier around the keying axis via the outer wall.
- the keying device includes a key, which is configured to be received in the housing conduit so as to be pivotable with respect to the sleeve, between an insertion orientation, in which the key is able to be slid in the housing conduit (52) while the quill is received in the keying channel, and a locking orientation, in which, while the quill is received in the keying channel, the keying device clamps the tooth against the tooth holder according to the fitting direction under the action of the key, by pressing the key against a bearing seat belonging to the tooth, in the direction of the fitting direction, and pressing the sheath against the duct keying in the opposite direction.
- the key is monolithic and comprises a bearing cam and a bearing end formed in one piece.
- the pressing of the key against the support seat is carried out by pressing the support end directly against the support seat, in the direction of the fitting direction.
- the pressing of the sheath against the keying duct is carried out by pressing the support cam against the housing duct, in the opposite direction to the fitting direction.
- An idea at the base of the invention is to provide that the support cam and the support end are constituted by a single piece, namely by the key, to facilitate the manufacture of the keying device. Indeed, this key can be manufactured in one go, to form both the bearing cam and the bearing end in one piece, for example by forging within the same mold. In the case of a forging or similar manufacturing process to obtain the key, it is not necessary to provide several separate molds to form the bearing cam and the bearing end. Nor is it necessary to provide a notch or other means of coupling between the key and the support cam, so that the key drives the support cam in rotation, since they are entirely united by being formed by the same part. After the key has been formed, for example by forging, there is therefore advantageously no need to provide significant additional manufacturing steps such as machining, except possibly deburring.
- the sheath is monolithic, the outer wall and the housing duct being formed in one piece.
- the pressing of the bearing cam against the housing duct takes place without an intermediate piece between the key and the sheath.
- the housing conduit is coated with a lubricant.
- the support seat comprises two primary faces, each primary face being oriented obliquely, being turned towards the other primary face and in the opposite direction to the fitting direction.
- the bearing end comprises two secondary faces, the bearing end resting against the bearing seat in that the bearing end is received between the primary faces, with each secondary face support against one of the primary faces.
- the tooth includes 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 sheath is received in the keying duct: capture the retaining rib therebetween, parallel to the keyway axis, when the keyway is in the locking orientation, to secure the keyway relative to the tooth parallel to the keyway axis; and are disengaged from the retaining rib when the key is in the insertion orientation.
- the key and the tooth comprise rotation stops, which come into a rotation stop when the key is in the orientation of insertion, to limit the pivoting of the key to the orientation of insertion and which come into rotation stop when the key is in the locking orientation to limit the pivoting of the key to the locking orientation.
- the key includes a dismantling groove, which is made along the bearing end.
- the dismantling groove is: clear of the bearing seat, when the key is in the insertion orientation, so that the key can be extracted from the housing conduit by introduction of a disassembly tool into the disassembly groove; and turned against the bearing seat, when the key in the locking orientation.
- the key defines a joint plane, which crosses the bearing cam and the bearing end, the bearing cam and the bearing end being tapered on either side of the joint plane .
- the pin includes an actuation head, configured to be coupled with an actuation tool, to pivot the pin between the insertion orientation and the locking orientation, the actuation head being formed in one piece with the support cam and the support end and projecting out of the sheath when the key is received in the housing duct.
- the actuation head is tapered 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 notch actuation, the actuation notch and the two fingers being crossed by the joint plane and being tapered on either side of the joint plane.
- the tooth comprises a keying orifice, within which the keying duct opens when the tooth is received on the tooth holder, the support seat being formed on an edge of the keying orifice.
- the wear assembly further comprises a plug, which is configured to close off 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 locking orientation.
- FIG 1 is an exploded perspective view of a wear assembly and an actuating sleeve, according to one embodiment of the invention, where a key is in an insertion orientation and where a tooth holder is shown mounted on a bucket.
- FIG 2 is an assembled perspective view of the wear assembly of Figure 1, from another angle, where the key is in the locked orientation and is concealed by a plug.
- FIG 3 Figure 3 is a partial section of Figure 2 along section plane II.
- Figure 4 is a side view of the wear assembly of the previous figures, where the key is in the insertion orientation, the plug being omitted.
- FIG 5 is a side view of the wear assembly of the previous figures, where the key is in the locking orientation, with the plug omitted.
- FIG 6 Figure 6 is a front view of the key of the previous figures.
- FIG 7 Figure 7 is a side view of the key of the previous figures.
- FIG 8 is a front view of a sleeve belonging to the wear assembly of the preceding figures, receiving the key in the orientation of insertion, the key being in cross section.
- FIG 9 is a perspective view of the sleeve of Figure 8, shown alone.
- FIG 10 Figure 10 is a perspective view of the cap of Figure 2.
- 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 device of keying.
- the wear assembly preferably comprises a plug 9, visible in Figures 2, 3 and 10.
- Figure 1 also shows an actuation tool 1 1, schematically, a dismantling tool 14 and, shown partially in dotted lines, a cup 13.
- Bucket 13 belongs to a public works or mining machine.
- works machine is meant, for example, a backhoe, an excavator, a backhoe, or any construction machine of the same type.
- hoisting machine we mean 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, likely to scrape, pick up and/or move materials, preferably from the ground, with a view to their evacuation from a given place. towards others.
- the bucket 13 forms a tray with an access opening which is for example of rectangular shape.
- the access opening is delimited by four edges, including an edge 131 visible in Figure 1, on which the wear assembly is intended to be fixed. Among these edges, one can count an attack blade, here formed by the edge 131. Preferably, 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 permanently fixed on the edge 131 of the bucket 13 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 out.
- a fitting direction D31 is defined, which is fixed with respect 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.
- direction D31 is directed from tooth 1 to adapter 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 form of pliers which straddles the edge 131, as shown in Figure 1.
- the base 31 is preferably welded to the edge 131.
- the tooth holder 3 comprises a fitting nose 32, to receive the tooth 1 by fitting the tooth onto the nose 32, in the direction D31.
- Figure 2 shows the tooth 1 fitted on the tooth holder 3.
- the nose 32 and the base 31 are arranged successively in the direction D31. Nose 32 and base 31 are integral.
- the nose 32 is directed in the opposite direction to the direction D31.
- Tooth holder 3 comprises a keying duct 33, which passes through tooth holder 3 right through.
- the keying duct 33 passes through the nose 32.
- the duct 33 extends along a keying axis X33, fixed with respect to the tooth carrier 3, and which is perpendicular to the direction D31, or at least transverse with respect to the towards D31.
- conduit 33 is coaxial with 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 a side of the tooth carrier 3, an emerging end 34 and, on the other side of the tooth carrier 3, an emerging end 35, visible in figure 3.
- the tooth holder 3 is monolithic, in that the base 31, the nose 32 and the duct 33 are formed in one piece.
- the tooth carrier is made of steel, as cast or forged, or molded and then machined, or even forged and then machined.
- Tooth 1 comprises a working end 15, through which tooth 1 is intended to work the material worked by bucket 13, when the tooth is received on bucket 13 via tooth holder 3.
- the working end 15 serves to scrape, prick the material and/or impact the material being 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 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. Provision is preferably made for cavity 16 to open in 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 have a generally pyramidal or frustoconical shape for their contact zone, this shape being divergent along the direction D31. A pyramidal or conical fitting of the tooth 1 on the tooth holder 3 is therefore obtained. tooth on the tooth holder 3, ensuring precise centering of the tooth 1 .
- the lugs 17 and 18 are directed along the direction D31, from the working end 15.
- the lugs 17 and 18 project along the direction D31 from an edge of the cavity 16.
- the ears 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 on the tooth holder 3.
- the lug 17 covers the end 34 of the duct 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 lug 17 includes a keyhole 19, which passes through the lug
- the lug 18 includes a keyway 20, which passes through the lug
- the nose 32 to include a slot 37, recessed, to accommodate the lug 17 when the tooth 1 is fitted.
- the slot 37 is positioned in the direction D31 with respect to the male part 36, at the border between the nose 32 and the base 31.
- a border of the slot 37, delimiting the slot 37, extends around the end 34.
- the edge of slot 37 extends around lug 17.
- the nose 32 to include a crenel 38, made hollow, to accommodate the lug 18 when the tooth 1 is fitted.
- the slot 38 is positioned in the direction D31 with respect to the male part 36, at the border between the nose 32 and the base 31.
- a border of the slot 38, delimiting the slot 38, extends around the end 35.
- the slots 37 and 38 are arranged on either side of the tooth holder 3, being crossed by the axis X33. When tooth 1 is fitted, the edge of slot 37 extends around 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.
- seat 21 is turned in the opposite direction to direction X33.
- the seat 21 forms two faces 22, called “primary faces”.
- the faces 22 are oblique with respect to each other, that is to say are oriented in a “V”.
- the faces 22 face each other, so as to provide a reception space between them.
- faces 22 are at the same height along axis X33, facing towards 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.
- 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 by 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 lugs 17 and 18 and the keyholes 19 and 20, are formed in one piece.
- the tooth is made of steel, as cast or forged, or molded then machined, or even 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.
- Complete immobilization of tooth 1 is obtained thanks to the keying device, comprising sleeve 5 and key 7, as explained below.
- the sleeve 5 is visible in Figures 1, 3, 8 and 9.
- the sleeve 5 is configured to be received in the keyway 33, as shown in Figure 3 and to receive within it the key 7.
- the keying device is received in the keying duct 33 via the sheath 5.
- the sleeve 5 comprises an outer wall 51, a housing conduit 52, an end 53 and an end 54.
- the sleeve 5 is monolithic, in that the outer wall 51, the housing conduit 52 and the ends 53 and 54 are formed in one piece. Provision is made for sleeve 5 to be elastically deformable, unlike key 7, tooth 1 and tooth carrier 3 which are designed to be rigid.
- the sheath 5 is for example made of elastomer, and formed by molding.
- sheath 5 does not protrude from ends 34 and 35, as shown in FIG. 3.
- end 53 is level with end 34 and the end 54 is level with end 35.
- the housing duct 52 is preferably through, opening at the end 53 and at the end 54. Alternatively the duct 52 opens at least at the end
- conduit 52 is coaxial with axis X33.
- the outer wall 51 faces outward surrounding the housing conduit 52, which faces inward.
- Wall 51 connects ends 53 and 54.
- External wall 51 surrounds the housing duct from end 53 to end 54, and surrounds axis X33 when sheath 5 is received in duct 33.
- the sheath 5 is received in the conduit 33 via the outer wall 51.
- the outer wall 51 is directly in contact with the keying conduit 33, preferably over all or most of the surface of the outer wall 51 .
- the conduit 33 and the wall 51 are of complementary shape.
- the outer wall 51 and the duct 33 have a shape which prevents the sleeve 5 from rotating around the axis X33, when the sleeve 5 is received in the duct 33.
- recesses are provided on the outer wall 51 to promote deformation of the sheath 5.
- the outer wall 51 is advantageously in contact over its entire surface against the duct 33, except for these recesses.
- the outer wall 51 locally forms a radial groove 55 in relief, here from the end 53 over a portion of the length of the sheath 5, this groove 55 being received in a radial groove 39 hollow , formed over part of the length of the conduit 33 from the end 34.
- the outer wall 51 forms a flat 56, which extends from the end 53 to the end
- This flat 56 is complementary with a flat formed by the conduit 33, from the end 34 to the end 35.
- the outer wall 51 and the duct 33 have an ovoid cross-section along the axis X33, to block the rotation.
- the outer wall 51 and the duct 33 advantageously have a complementary frustoconical shape, which converges along the axis X33, of the end 34 towards end 35, and from end 53 towards end 54.
- Sleeve 5 is shaped to be able to be inserted into the duct 33 and withdrawn from the duct 33 along the axis X33, via the end 34, preferably in the absence of the tooth 1.
- 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 Figures 1, 4 and 8, and a distinct orientation, called “locking orientation”, shown in Figures 3 and 5.
- Figure 2 shows the wear assembly, while the key 7 is in the locking orientation, even if the key 7 is not not visible in Figure 2 being hidden by the cap 9.
- the duct 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 by relative to axis X33. It is expected that, in cross section with respect to the axis X33, the duct 52 is circular in shape for the main part of its circumference.
- a portion 57 of the circumference of the circular section of the conduit 52 is ovate, that is to say in depression with a locally increased radius 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 conduit 52 over only a portion of its circumference.
- the duct 52 is frustoconical in convergence, along the axis X33, from the end 53 to the end 54, as shown in Figure 3.
- the sheath 5 is advantageously tapered from the end 53, to be able to be obtained in a single molding operation, in a single mold, without subsequent reworking of the shape of the sheath 5 or assembly.
- This tapered shape results for example in the aforementioned conicity of the outer wall 51 and of the duct 52.
- the mold cavities are moved relative to each other along a mold opening axis passing through the duct 52, parallel to 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, provision is preferably made to coat the housing duct 52 with a lubricant, for example by carrying out lubrication for life. This is useful in particular when the duct 52 is formed in one piece with the outer wall 51, with the elastically deformable material. Then, the pivoting of the key 7 takes place without intermediate piece between the key 7 and the sheath 5. However, it is also possible to provide a pivoting without lubricant.
- the sheath 5 is not monolithic, in that a portion or the whole of the duct 52 is formed by a rigid part, for example of metal, whereas the rest of the sheath 5, including the outer 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 molded 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 not merged, preferably parallel if not slightly inclined with respect to each other.
- the key 7 comprises, in this order along 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 with respect to the support end 72 and, preferably, with respect to the distal end 73 and to the head 74.
- the ends 72 and 73 are separated by the cam 71.
- Cam 71 and head 74 are separated by end 72.
- Key 7 is entirely monolithic, in that all parts of 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 the parts of the key 7 described here.
- the key 7 is entirely made 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, in a single mold.
- no assembly operation and no machining or other subsequent recovery is carried out, except possibly for a burr formed at the joint plane P7 following the forging.
- the need to rework the key 7 following forging is reduced. The manufacture of the key 7 is therefore facilitated.
- the key 7 can be obtained by casting rather than by forging.
- the key 7 to define 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 tapered on either side of the joint plane P7.
- the cut is made along plane P7, which then merges with plane II.
- Axes X71 and X72 are included in plane P7.
- On either side of this joint plane P7 it is even provided that all the parts of the key 7 are undercut, in particular the cam 71, the end 72, the end 73 and the head 74.
- the key 7 is designed to be able to be formed by a mold which comprises a first cavity, to form the whole part of the key 7 on one side of the plane P7, and a second cavity, to form the whole part of the key 7 on the other side of plane P7, the two cavities being joined at 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 Figure 3.
- the key 7 is received in the conduit 52 in that the bearing cam 71 is received at the 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 conduit 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 along the axis X33.
- the key 7 can be pivoted between the insertion orientation and the locking orientation with respect to the sheath 5, by means of the head 74.
- provision is made for the key 7 performs less than one full turn around the axis X33 with respect to the sleeve 5 and the tooth carrier 3.
- the key 7 performs a half turn.
- the X71 axis is in the D31 direction relative to the X72 axis
- the axis X72 is in the D31 direction relative to the X71 axis.
- cam 71 projects in direction D31 relative to end 73, and end 72 projects in the opposite direction of direction D31 relative to cam 71.
- the cam 71 protrudes in the opposite direction of the direction D31 with respect to the end 73, and the end 72 protrudes in the direction D31 with respect to the cam 71 .
- the end 73 is generally cylindrical in shape with a circular base, centered on the axis X72, at least over 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 To be coaxial with the X71 axis, provision is made for the cam 71 to present a form of revolution centered on the X71 axis, for the majority of its circumference around the X71 axis.
- the cam 71 has a bearing portion 81 and a back portion 82, both of which the joint plane P7 passes through 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, then that portion 82 is the opposite.
- portion 81 is directed opposite to direction D31, while portion D82 is directed in direction D31.
- the cam 71 is tapered 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 back portion 84.
- the back portion 84 and the support portion forming the faces 83 are both traversed by the joint plane P7.
- the faces 83 are visible in Figure 6, one of the faces 83 is visible in Figure 1 while the other face being visible in Figure 7.
- the faces 83 are complementary to the faces 22 of the seat 21 formed by tooth 1, as explained below.
- the faces 83 are symmetrical with respect to the plane P7.
- faces 83 are substantially planar.
- faces 83 are arranged at the same height along axis X72.
- the faces 83 are oriented in a "V", that is to say are oriented so as to converge from the axis X72, on either side of the plane P7, being turned to the opposite each other.
- the faces 83 are inclined with respect to each other by an angle of 60 degrees, each face 83 being oriented by an angle of 30 degrees with respect to the joint plane P7.
- the support portion of the end 72, forming the faces 83 is turned away from the support portion 81, around the axis X71 and/or the axis X72.
- the support portion of the end 72, forming the faces 83 is turned on 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 To be formed in one piece with the rest of the key 7, provision is made for the end 72 to be tapered on either side of the plane P7, being crossed by the plane P7, including the portion of support forming the faces 83 and the dorsal portion 84.
- the support portion forming the faces 83 is directed in the opposite direction to the direction D31, while the portion 84 following the direction D31.
- the support 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, that the tooth 1 is fitted or not on the tooth holder 3.
- the insertion or the withdrawal 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 tooth 1 , or else without pressing against tooth 1 .
- the end 73 is radially thinner than the cam 71 to pass through the duct 52 without difficulty, while the cam 71 radially is thicker, to be directly in contact with the duct 52, substantially over the entire circumference of the conduit 52, except on the possible ovate portion 57 which is recessed with respect to the cam 71, as shown in FIG. 8 where the key 7 is cut at the level of 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 close to the end 73, which limits the position of the key 7 with respect to the tooth 1, parallel to the axis X33 , coming to bear against the tooth 1, in particular against the lug 18, when the key 7 is inserted into the sheath 5.
- the axial positioning of the key 7 is therefore particularly precise, as shown in FIG. 3.
- the distal end 73 is centered in the port 20.
- the support portion of the support end 72 comprising the faces 83, is turned away from the seat 21, in the opposite direction to the direction D31, as shown in Figures 1 and 4.
- the portion support of the support end 72 is radially at a distance from the tooth, in particular is radially at a distance from the orifice 19.
- the dorsal portion 84 is not in abutment, or is in contact without support, against the primary faces 22 the seat 21, being received between the primary faces 22.
- the axes X71 and X33 coincide. 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 upside down is reduced.
- the end 72 of the key 7 bears against the bearing seat 21 of the tooth in the direction D31 and that the cam support 71 bears against conduit 33, via sheath 5, in the opposite direction to direction D31.
- the end 73 is also made for the end 73 to rest against the orifice 20 of the tooth in the direction D31. It is expected that there is no intermediate piece between key 7 and tooth 1 for 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 support in the direction D31. Provision is made for the only intermediate piece between the key 7 and the tooth holder 3 to be the sheath 5 for bearing.
- the support cam 71 is directly in contact with the conduit 52 of the sheath 5, and the sheath is directly in contact with the conduit 33 of the tooth holder 3 , in the opposite direction in the direction D31 .
- plane P7 only the sheath is interposed between cam 71 and conduit 33.
- each secondary face 83 of the end 72 bears 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.
- faces 22 being arranged obliquely while being turned towards each other, the end 72 and the tooth 1 are centered with respect to each other, perpendicular to the plane P7, thanks to this bearing .
- This opposing 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 with respect to the tooth holder 3, which prevents that, during the use of the wear assembly, the key does not accidentally return to the orientation of insertion.
- the application of a sufficient torque on the head 74 of the key 7 makes it possible to pivot the key 7 again in the orientation of insertion to remove the key 7 and carry out the replacement of the tooth 1.
- the support portion of the support end 72 instead of the faces 83, provision could be made for the support portion of the support end 72 to be semi-cylindrical and centered on the axis X72, while the seat has a complementary shape.
- portion 84 is oriented opposite the seat 21, being directed in the opposite direction to the direction D31. Then, portion 84 extends radially away from orifice 19.
- the end 73 bears 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 of the tooth 1 with respect to each other perpendicularly to the plane P7. It is advantageously provided that the end 73 completely closes the orifice 20, except for rotational play, in order to avoid the introduction of foreign bodies through the orifice 20 towards the inside of the wear assembly during the 'use.
- the support portion 81 of the cam 71 comes to bear against a portion 59 of the duct 52 in the opposite direction to the direction D31.
- Portion 59 is preferably adjacent to portion 57.
- sheath 5 is elastically deformed at portion 59 by being crushed between portion 81 of cam 71 and conduit 33.
- Figure 3 shows a hatched area representing the offset of the portion 59 in the opposite direction of the direction D31, relative to its initial position referenced 59A.
- Figure 8 shows the portion 59 while the sheath and not deformed.
- This deformation of the sleeve 5 causes the sleeve 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 sleeve 5.
- This elasticity makes it possible to take up any play likely to be created parallel to the direction D31 during use. of the wear assembly, by wear or dulling of the tooth 1 and/or of the tooth holder 3 by dulling and/or abrasion. Even when the wear assembly is worn, tooth 1 tightness 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 lugs 17 and 18, respectively by support of the ends 72 and 73 of the key.
- the support of the key 7 against the duct 33 takes place in the opposite direction via the cam 71, between the ends 72 and 73.
- the tooth 1 comprises a retaining rib 23, to axially retain 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 hole 19.
- the rib 23 is formed between the two faces 22 of the seat 21, thus connecting the faces 22 together.
- Rib 23 is at the same height as faces 22 along axis X33. More generally, provision is advantageously made for the rib 23 to occupy 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 tooth 1 is received on the tooth holder, the rib is directed in the opposite direction to direction D31, being formed on a portion of hole 19 on the side of direction D31.
- the key 7 comprises a radial shoulder 85 and a radial shoulder 86, which are spaced from each other along the axis X71.
- the shoulders 85 and 86 are formed at the bearing end 72. More specifically, 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. In particular, the faces 83 connect the shoulders 85 and 86 together.
- 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. For example, in the locking orientation, the shoulders 85 and 86 are directed along the X31 direction. In the orientation of insertion, the shoulders 85 and 86 face 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 with respect to the tooth 1 and the tooth holder 3. More specifically, shoulder 85 bears against rib 23 parallel to axis X33, in the direction of withdrawal of key 7, to prevent said withdrawal. Shoulder 86 bears against rib 23 parallel to axis X33, in the direction of insertion of key 7, to ensure that key 7 is not inserted too far into sleeve 5.
- the shoulders 85 and 86 are disengaged from the rib 23, being turned away from the rib 23, to allow the sliding of the key 7 parallel to the axis X33 with respect to the sheath. 5. In other words, the shoulders 85 and 86 are not brought into axial abutment 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 bearing end 72.
- the groove 87A is preferably formed on a portion of the key 7, which is radial with respect to the axis X72, the groove 87A protruding perpendicularly with respect to the plane P7, around the axis X72.
- the groove 87A is positioned a quarter turn of the key 7 relative to the portion bearing the faces 83.
- the groove 87A is directed perpendicularly relative to the direction D31, towards the underside of the tooth 1 as shown in Figure 4, that is to say towards the outside of the bucket 13, while in the locking orientation, the spline 87A is directed in the opposite direction, as shown in figure 5, that is to say towards the top of tooth 1 and towards the inside of bucket 13.
- the groove 87A is tapered on one side 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 hole 19.
- the two notches 24 and 25 are distributed diametrically opposite in the orifice 19, vis-à-vis 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 stroke of the key 7 from the insertion orientation to the locking orientation, when the key 7 is received in the sheath 5, it -even received on tooth holder 3, and tooth 1 is received on tooth holder 3.
- spline rotation stop against notch 24 in a direct direction to prevent key 7 from being pivoted beyond the insertion orientation.
- the spline 87A comes into rotational abutment against the notch 25 in an indirect direction, to prevent the key 7 from being pivoted beyond lock orientation.
- the pivoting of the key 7 is therefore limited to the insertion and locking orientations, being authorized 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 spline 87A advantageously comes into rotational abutment against the stop notch 58A in the direct direction.
- shoulder 85 projects radially as far as groove 87A, as clearly visible in FIG. 6.
- groove 87A projects axially from of the shoulder 85 in the direction of the shoulder 86.
- the shoulder 85 is therefore advantageously projecting radially 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 sheath 5 and the tooth and reduce the risk of clogging by introduction of foreign bodies during use of the wear assembly.
- the shoulder 85 ends, circularly opposite the spline 87A, with a stop notch 87B.
- the aforementioned sector is described by the shoulder 85 of the groove 87A at the stop notch 87B, around the axis X72, and is here worth 135 degrees.
- the shoulder 85 extends around the axis X72 by connecting the spline 87A to the stop notch 87B.
- the sleeve 5 comprises a stop notch 58B, formed at the end 53 of the sleeve 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 sleeve 5, in the direction of insertion of the key 7.
- this bearing s 'performs over the entire surface of the face of the shoulder 85, which faces the side of the sleeve 5, at least when the key is in the locking orientation.
- the axial contact of the shoulder 85 with the sleeve 5 and/or the abutment of the notch 87B against the notch 58B improves the sealing between the key 7 and the sleeve 5, avoiding the introduction of foreign bodies.
- the key 7 comprises a dismantling groove 88, visible in Figures 1, 3 and 7.
- the groove 88 is also visible in Figure 6, being shown in broken lines, while the groove 88 is behind the shoulder 86.
- the dismantling groove 88 is formed along the bearing end 72.
- the dismantling groove 88 extends for example along a plane orthogonal to the axis X71. In other words, groove 88 is perpendicular to plane P7, being crossed by plane P7 and being tapered on either side of plane P7.
- the groove 88 is formed in one piece with the rest of the key 7, advantageously without having to machine the groove 88.
- the dismantling groove 88 is advantageously provided between the shoulder 86 and the end of the support 72.
- the groove 88 is arranged between the two shoulders 85 and 86.
- the groove 88 is formed hollow with respect to the support end 72.
- the groove 88 for example connects the faces 83 together.
- the groove 88 is narrow enough to receive the end of the dismantling tool 14, shown schematically in Figure 1, for example the flat end of a flat screwdriver, or a crowbar.
- the tooth 1 comprises a dismantling slot 26, as visible in FIGS. 1 to 5, which is formed hollow on the edge of the keying orifice 19.
- the dismantling slot 26 is formed radially in the edge of the orifice 19, in the opposite direction to the direction D31. Axially, the disassembly crenel 26 opens outwards from tooth 1, but is blind towards the inside of tooth 1.
- the groove 88 is disengaged from the bearing seat 21 being directed in the opposite direction to the direction D31.
- the groove 88 opens into the slot 26.
- the dismantling slot 26 is wide enough to guide the flat end of the dismantling 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 slot 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.
- levering is done with the tool 14, by taking a tilting support of the tool 14 on the tooth 1, at the level of the slot 26. The extraction of the key 7 is therefore particularly easy.
- the groove 88 is turned against the bearing seat 21, that is to say say is turned in the D31 direction, emerging in the D31 direction. Then, it is advantageously provided that the groove 88 is closed by the bearing 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 the use.
- the actuating head 74 is configured to be coupled with the actuating tool 11, shown in Figure 1, so that a technician actuates the key 7 in pivoting relative to the tooth holder 3, between the orientation of locking and 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 square socket end, which can be coupled to a ratchet, wrench or 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 can be seen in 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.
- Fingers 90 and 91 protrude parallel to axis X33, in the opposite direction from cam 71.
- fingers 90 and 91 are arranged diametrically opposite on either side of axis X72, being distributed along the P7 plane.
- Each finger 90 and 91 is crossed by the plane P7, being tapered on either side of the plane P7 to be able to 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, fingers 90 and 91 end at the same height along axis X72.
- finger 90 delimits notch 89. Radially on the outside, finger 90 advantageously forms shoulder 86. Radially on the inside, finger 91 delimits notch 89 facing of the finger 90. Radially on the outside, the finger 91 forms 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 emerges parallel to the axis X72, but also radially with respect to the axis X72, in both directions.
- the notch 89 emerges along the groove 87A.
- the notch 89 opens out 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 side to side.
- the notch 89 extends hollow 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 to be able to be formed in one piece with the rest of the key during forging, without additional machining. So that the notch 89 is thus undercut, provision is preferably made for each finger 90 and 91, radially on the inside, to form two bevelled faces, each face being arranged on a single side of the plane P7 while the other pan is arranged on the other side. This is particularly visible in figure 6, where we observe four beveled sides, forming two pairs of sides diverging on either side of plane P7. Furthermore, the notch 89 being particularly deep, it can still 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 a 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 the shape of an arrow, oriented radially outwards with respect 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 tightening of tooth 1 in direction D31.
- the notch 89 prefferably, provision is made for the notch 89 to present, 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 shallower than the part of the notch 89.
- pictograms formed 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 pivot the key 7, and/or if the key 7 is in orientation of insertion or orientation of lockdown.
- the plug 9 is designed to close the keyway orifice 19, covering the head 74 of the key 7 and 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 cap 9 comprises a base 95, the periphery of which corresponds to that of the orifice 19.
- the base 95 forms a cover which, when the cap 9 is mounted, extends transversely to the axis X33.
- the base 95 advantageously comprises a tongue 96, which lodges in the dismantling niche 26 to close it, while leaving a small interstitial space in order to allow the dismantling of the plug 9 using the tool 14, by lifting the plug 9 via tongue 96.
- base 95 Parallel to axis X33, base 95 preferentially bears against head 74, in particular against fingers 90 and 91.
- the cap 9 comprises two fingers 97, of similar shape to the two fingers 111 and 1 12, 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 plug 9 advantageously comprises a plug 98, which projects from the base 95, perpendicular to the base 95.
- the plug 98 is disposed between the fingers 97 and the tongue 96
- the plug 98 is in the form of a cylinder portion, which is centered on the axis X72 when the cap 9 caps the key 7.
- the plug 98 is complementary with the dorsal portion 84 of the key 7 and comes to bear radially against this dorsal portion 84 when the cap 9 is fitted.
- the plug 99 then fills a gap which is provided 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 cap 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 with the shoulder 86, in the extension of one of the faces 83, and bears radially against this shoulder 86 when the cap 9 is fitted.
- the plug 99 then fills a gap which is made radially between the shoulder 86 and the orifice 19, and axially between seat 21 and base 95, which avoids clogging by introduction of foreign bodies during use of the wear assembly.
- the plugs 98 and 99, the fingers 97 and/or the tongue 96 make it possible to hold the cap 9 in place on the head 74 by interlocking along the axis X72.
- the plugs 98 and 99 are notched for their part intended to be in contact with the key 7, to ensure this interlocking.
- the sleeve 5 and the key 7 are inserted by the right side of the tooth 1 and the tooth holder 3.
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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280080874.5A CN118355171A (zh) | 2021-12-06 | 2022-12-05 | 用于采掘或工程机器的铲斗的耐磨组件 |
CA3239033A CA3239033A1 (fr) | 2021-12-06 | 2022-12-05 | Ensemble d'usure, pour un godet d'une machine d'extraction ou de travaux |
AU2022404606A AU2022404606A1 (en) | 2021-12-06 | 2022-12-05 | Wear assembly for a bucket of an extraction or works machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2113016 | 2021-12-06 | ||
FR2113016A FR3129957B1 (fr) | 2021-12-06 | 2021-12-06 | Ensemble d’usure, pour un godet d’une machine d’extraction ou de travaux |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023104736A1 true WO2023104736A1 (fr) | 2023-06-15 |
Family
ID=80225593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN118355171A (fr) |
AU (1) | AU2022404606A1 (fr) |
CA (1) | CA3239033A1 (fr) |
FR (1) | FR3129957B1 (fr) |
WO (1) | WO2023104736A1 (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004057117A1 (fr) * | 2002-12-23 | 2004-07-08 | Combi Wear Parts Ab | Systeme de pieces d'usure pour fixer detachable des pieces d'usure destinees a l'outil d'une machine agricole |
FR2884841A1 (fr) * | 2005-04-26 | 2006-10-27 | 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 |
EP2510160A1 (fr) * | 2009-12-11 | 2012-10-17 | CQMS Pty Ltd | Ensemble de verrouillage pour élément d'usure d'excavatrice |
FR3011013A1 (fr) | 2013-09-20 | 2015-03-27 | Safe Metal | Systeme mecanique comprenant un dispositif de liaison entre une piece d'usure et son support, et godet d'engin de travaux publics |
WO2017197163A1 (fr) * | 2016-05-12 | 2017-11-16 | Hensley Industries, Inc. | Systèmes de raccord dans des ensembles éléments d'usure en contact avec la terre |
WO2020214590A1 (fr) * | 2019-04-15 | 2020-10-22 | Hensley Industries, Inc. | Ensemble goupille de verrouillage sollicité en position pour élément d'usure entrant en contact avec le sol |
-
2021
- 2021-12-06 FR FR2113016A patent/FR3129957B1/fr active Active
-
2022
- 2022-12-05 CN CN202280080874.5A patent/CN118355171A/zh active Pending
- 2022-12-05 WO PCT/EP2022/084465 patent/WO2023104736A1/fr active Application Filing
- 2022-12-05 CA CA3239033A patent/CA3239033A1/fr active Pending
- 2022-12-05 AU AU2022404606A patent/AU2022404606A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004057117A1 (fr) * | 2002-12-23 | 2004-07-08 | Combi Wear Parts Ab | Systeme de pieces d'usure pour fixer detachable des pieces d'usure destinees a l'outil d'une machine agricole |
FR2884841A1 (fr) * | 2005-04-26 | 2006-10-27 | 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 |
EP2510160A1 (fr) * | 2009-12-11 | 2012-10-17 | CQMS Pty Ltd | Ensemble de verrouillage pour élément d'usure d'excavatrice |
FR3011013A1 (fr) | 2013-09-20 | 2015-03-27 | Safe Metal | Systeme mecanique comprenant un dispositif de liaison entre une piece d'usure et son support, et godet d'engin de travaux publics |
WO2017197163A1 (fr) * | 2016-05-12 | 2017-11-16 | Hensley Industries, Inc. | Systèmes de raccord dans des ensembles éléments d'usure en contact avec la terre |
WO2020214590A1 (fr) * | 2019-04-15 | 2020-10-22 | Hensley Industries, Inc. | Ensemble goupille de verrouillage sollicité en position pour élément d'usure entrant en contact avec le sol |
Also Published As
Publication number | Publication date |
---|---|
FR3129957B1 (fr) | 2023-12-15 |
AU2022404606A1 (en) | 2024-06-06 |
CA3239033A1 (fr) | 2023-06-15 |
CN118355171A (zh) | 2024-07-16 |
FR3129957A1 (fr) | 2023-06-09 |
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