EP3947832A1 - Dispositif de verrouillage pour accoupler un élément d'usure à un support dans un engin de terrassement - Google Patents

Dispositif de verrouillage pour accoupler un élément d'usure à un support dans un engin de terrassement

Info

Publication number
EP3947832A1
EP3947832A1 EP20715071.5A EP20715071A EP3947832A1 EP 3947832 A1 EP3947832 A1 EP 3947832A1 EP 20715071 A EP20715071 A EP 20715071A EP 3947832 A1 EP3947832 A1 EP 3947832A1
Authority
EP
European Patent Office
Prior art keywords
locking element
movement
locking
internal
rod
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.)
Granted
Application number
EP20715071.5A
Other languages
German (de)
English (en)
Other versions
EP3947832B1 (fr
Inventor
José LÓPEZ ALMENDROS
Kamal BOBOUH ABAKOUY
Justo Jesús Ortiz García
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.)
Metalogenia Research and Technologies SL
Original Assignee
Metalogenia Research and Technologies SL
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 Metalogenia Research and Technologies SL filed Critical Metalogenia Research and Technologies SL
Publication of EP3947832A1 publication Critical patent/EP3947832A1/fr
Application granted granted Critical
Publication of EP3947832B1 publication Critical patent/EP3947832B1/fr
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
    • E02F9/2841—Retaining means, e.g. pins resilient

Definitions

  • the invention relates to a locking device for coupling a wear element to a support in an earth moving machine, the support comprising a housing and the wear element comprising a hole
  • the locking device is suitable for being introduced inside the housing.
  • the hole defines a hole longitudinal axis
  • the housing defines a housing longitudinal axis
  • both longitudinal axes are parallel to each other and close to each other or coincident in space
  • the hole and the housing are aligned in the sense that, in a direction according to both longitudinal axes, one of them starts when the other finishes (in the case when there is a complete overlapping). In the case when there is only a partial overlapping, those parts of
  • Earth moving machines are used in excavation, demolition, construction, mining, and dredging works and similar activities. They generally have a shovel or bucket where the material is collected. The shovel or bucket is subjected to high stresses and erosion,
  • the shovel or bucket usually has a plurality of wear elements protecting it against wear and impacts and/or improving penetration in the ground, such as teeth, supports or tooth bars (also referred to as adapters), and/or (front and side) guards, for example.
  • the wear elements can be attached to other wear elements (such as a tooth attached to an adapter) and/or can be attached to the lip or blade of the bucket or shovel (such as an adapter attached to a lip).
  • the wear or protective elements can be fixed mechanically (easier and faster to change) or welded (less expensive but hard to change and with the risk of damaging the blade with the weld), depending on the degree of abrasiveness of the ground and on the dimensions of the
  • the wear elements is usually advantageous for the wear elements to be fixed mechanically and to use, to that end, a locking device, for example a pin.
  • the wear element has a cavity in which a nose arranged in the support (for example, the adapter) on which the wear element will be assembled is housed.
  • a through hole goes
  • the locking device which is substantially an elongated pin
  • the wear element is thereby locked in the assembled position.
  • This superimposing does not have to be complete, where partial superimposing is sufficient provided that it is sufficient for the insertion of the pin.
  • This is also valid in the present invention. In certain cases, it is the wear element that has a nose and the support
  • locking devices of the state of the art present some drawbacks.
  • the locking device (or the tip of the locking device which is in contact with the wear element) not being subjected to a force that pushes it against the wear element, i.e. ,
  • the object of the invention is to overcome these drawbacks. This is achieved by means of a locking device of the type indicated above, characterized in that the locking device comprises:
  • 20 - movement means suitable for moving the locking element with respect to the internal element, in a reversible manner, between a retracted (or withdrawn) position and an extended (or deployed) position, where the movement between retracted position and the extended position defines a direction of movement, and
  • the locking element is completely within said housing and completely outside of said hole.
  • the wear element has a cavity in which a nose arranged in the support (for example, the adapter) on which the wear element will be assembled is housed.
  • a hole in the nose defines a housing and one of the walls of the cavity (the one facing the open end of the housing) has another hole such that, in an assembled position, the hole in
  • the wall of the cavity is superimposed on (i.e. , aligned or overlapping with) the housing and the locking device (which is substantially an elongated pin) can be introduced through the hole in the wall of the cavity until it is housed in the housing.
  • the hole in the nose may be a through hole (so that the housing has two open ends), in which case there
  • 5 may be two holes in both walls of the cavity facing the open ends of the housing.
  • the locking element In general, in the retracted position the locking element must be completely within the housing so that the wear element can be put over the nose of the support without being impeded by the locking element. In the retracted position the locking element is completely
  • part of the locking element (the corresponding locking end or at least part of the corresponding locking end) is outside the housing and is in the hole, so that it is able to be in contact with the wear element (in fact, it will be in contact as this contact will
  • the part of the locking element that goes into the hole is simultaneously going out of the housing, as the housing and the hole are mutually exclusive (I.e., none of them includes, comprises or surrounds the other).
  • the locking end is blocking the wear element, while in the retracted position the locking element is out of the blockage of the wear element.
  • the housing has a main axis that is parallel to the direction of movement, and the hole is after the open end of the housing. In order to put the wear element in the assembled position with the support, the wear element has to be moved in an assembling direction. This assembling
  • 25 direction forms an angle greater than 60° with the direction of movement (preferably greater than 75° and more preferably greater than 85°). So, when the locking device is in the ex tended position, part of it (the locking end or, at least, part of the locking end) is in the hole and, therefore acts as a blockage against a possible movement of the wear element in the assembling direction. On the contrary, when the locking element is in the retracted position,
  • the locking device is completely out of the hole, i.e., it is out of the blockage of the wear element. So, the wear element can move freely in the assembling direction.
  • the locking device comprises a capsule housing therein the internal element and at least the internal end of the locking element. It is particularly advantageous that, in the retracted position, the locking element is also housed in its entirety inside the capsule. It is likewise advantageous for the capsule to have a cross-section which, in at least one area, is
  • the elastic means are a spring, although other elastic means are possible.
  • the movement means comprise rotation means.
  • the rotation means transform a rotation into a longitudinal movement.
  • the locking element is a cylindrical body with a base facing the internal
  • the internal element is also a cylindrical body with a base facing the locking element.
  • This geometry of both elements allows a particularly advantageous embodiment of the rotation means in which the base of the internal element facing the locking element comprises a first inclined surface and the base of the locking element facing the internal element comprises a second inclined surface, where in the retracted position, both inclined
  • the force exerted by the elastic means tends to bring the first inclined surface and the second inclined surface together.
  • a preferred embodiment is one where the base of the internal element facing the locking element comprises a first seating surface arranged at the end of the first inclined surface which, in the extended position, is closer to the locking element, and the base of the locking element facing the internal element comprises a second seating surface arranged at the end of the second inclined surface which, in the extended position, is closer
  • one of the seating surfaces to comprise a first elevation at the end of the seating surface opposite the attachment area
  • one of the seating surfaces comprises a second elevation at the end of the seating surface close to the attachment area between the seating surface and its corresponding inclined surface. This second elevation
  • the second elevation must be sized such that it prevents this involuntary rotation but
  • the base of the internal element facing the locking element comprises a first guide surface opposite the first inclined surface and the base of the locking element facing the internal element comprises a second
  • both surfaces have a spatial orientation in the same direction but in opposite senses.
  • the inclined surface and its corresponding guide surface will be facing one another, whereas in other cases they will be on opposite
  • the embodiment includes a second elevation like the one indicated above, then another additional improvement is when the second elevation has a maximum elevation point having a maximum height, in the sense of the direction of movement, with respect to the seating surface, and the guide surface corresponding to the
  • transitioning from retracted position to the extended position is achieved by means of a rotation of the locking element with respect to the internal element of 360° or less, preferably 180° or less, and very preferably 90°.
  • the rotation means comprise a hole arranged at the base of the locking
  • the locking device comprises anti-rotation means suitable for preventing rotation
  • the locking device comprises air discharge means communicating the space
  • the air discharge means allow the air trapped in this space to be discharged, preventing the
  • the locking device comprises an O-ring at an intermediate point of the side surface of the locking element.
  • the purpose of this O-ring is to prevent, during operation of the earth moving machine, dirt and/or fines (fines are understood in the present description
  • the air discharge means comprises an air discharge conduit extending between the space comprised between the locking element and the internal element and an upper end, where the upper end of the air discharge conduit is, according to
  • the upper end of the discharge conduit is located above the O-ring, such that the air can exit the space comprised between the locking element and the internal element and the generation of an overpressure hindering or preventing retraction of the locking device is prevented.
  • the air discharge conduit is a cavity arranged between the outer side surface of the locking element and the side surface of said capsule.
  • the second end is suitable for being moved according to the direction of movement along the cavity, where the cavity has an opening oriented towards the internal element and with the rod going through same, and where the elastic means are arranged between the second end of the rod and the opening.
  • the first end of the rod to be fixed (and preferably screwed) to the internal element. It is also particularly advantageous for the locking element to have a mounting hole coaxial with the direction of movement and with a diameter greater than the maximum diameter of the rod such that the rod is suitable for being housed in the cavity
  • the rod preferably has a head at its end acting as a stop for the elastic means, where this head is what defines the maximum diameter of the rod. It is also advantageous for the device to comprise a plug closing the mounting hole to prevent dirt and stones from entering through the mounting hole.
  • FIG. 10 Another preferred embodiment of a locking device according to the invention, equivalent to the preceding embodiment but“inverted”, is when the locking device comprises a rod with a first end fixed to the locking element and a second end housed inside a cavity arranged in the internal element, where the second end is suitable for being moved according to the direction of movement along the cavity, where the cavity has an opening oriented towards
  • the locking element 15 the locking element and with the rod going through same, and where the elastic means are arranged between the second end of the rod and the opening.
  • the internal element it is advantageous for the first end of the rod to be screwed to the locking element, for the internal element to have a mounting hole coaxial with the direction of movement and with a diameter greater than the maximum diameter of the rod such that the rod is suitable for being housed
  • the device in the cavity through the mounting hole, and for the device to comprise a plug closing the mounting hole.
  • the device comprises a rod with a first end fixed to the locking element and a second end housed inside a hollow space arranged in the capsule between the internal element and an inner end of the capsule opposed to an open end of the capsule, where the second end is suitable for being moved according to the direction of movement along the hollow space, where the internal element has a central opening
  • this embodiment offers two improvements: the stronger elastic means will compress further the air and the hollow space provides more room in which the air can be compressed (meaning a lower compression rate).
  • the inner end of the capsule is closed, so that a welding step is avoided.
  • the inner end is closed (directly i.e., the capsule having a base wall, or by welding the base of the internal element to the inner end of the capsule) in order to avoid that the earth particles and dust go into the mechanism of the locking device.
  • the device comprises two locking elements, with two movement means and two elastic means, as, with this preferred alternative, a locking device having only one capsule with all the remaining elements inside and fixed, can be assembled and delivered to the user.
  • the first end of the rod is screwed to the locking element or, alternatively, it is fixed to the locking element through a hinged joint.
  • the elastic means have a length D in an unloaded state, measured in the sense of the direction of movement, and are suitable for being compressed
  • the locking element and the internal element separate a distance E upon moving from the retracted position to the extended position, measured in the sense of said direction of movement.
  • the difference between D and T is greater than or equal to E. It is thereby assured that the elastic means are not compressed above their allowable value.
  • one advantage of the present invention is that the elastic means exert a force which helps to retract the locking device. This allows providing another advantageous solution which is achieved when the elastic means are in a partially compressed state when
  • this final embodiment consists of a locking device extending at both ends. It is common for the housing in the nose of the support to be a through hole and for the wear
  • Figure 1 shows a perspective view of a wear element partially assembled on a support and an exploded view of a first embodiment of a locking device according to the invention.
  • Figures 2 to 5 show a perspective view and top, front, and side views, respectively, of the locking device of Figure 1 in the extended (or deployed) position.
  • Figures 6 and 7 show front and side views, respectively, of the locking device of Figures 2 to 15 5, without the capsule.
  • Figure 8 shows a view equivalent to Figure 6, but with the locking device in the retracted position.
  • Figure 9 shows a longitudinal section view, according to the direction of movement, of the locking device of Figure 8.
  • Figure 10 shows a longitudinal section view, according to the direction of movement, of the locking device of Figure 6.
  • Figure 11 shows a perspective view of a support in which two locking elements according to the invention are introduced.
  • Figure 12 shows an exploded view of a second embodiment of a locking device according to 30 the invention.
  • Figure 13 shows a top view of the locking device of Figure 12.
  • FIG. 14 shows a longitudinal section view, according to the direction of movement, of the locking device of Figure 12 in the retracted position.
  • Figure 15 shows a longitudinal section view, according to the direction of movement, of the
  • Figures 16-18 show details relating to an air discharge system according to the invention.
  • Figure 19 shows a perspective view of another embodiment of a locking device, without the
  • Figure 20 shows a perspective view of the internal element of the locking device of Figure 19.
  • Figure 21 shows a side view of a further embodiment of a locking device, without the capsule.
  • Figure 22 shows an exploded view of the locking device of Figure 21.
  • Figures 23 and 24 show a longitudinal section view, according to the direction of movement
  • Figure 25 shows an equivalent view to Figure 24 but of another embodiment of the locking device.
  • Figures 26 and 27 show a longitudinal section view of two possible capsules for the locking device of Figure 21.
  • Figures 1 to 10 show a first embodiment of a retaining device according to the invention.
  • the device comprises a locking element 1 , an internal element 2, a rod 3, a spring 4, and a closing
  • the locking element 1 has an O-ring 6 extending along its side perimeter. These components are housed inside a capsule 7. When the locking device is in the extended position, a locking end 8 of the locking element 1 projects from the capsule 7 (see Figures 2, 4, and 5).
  • the device is housed in a housing 9 provided in the nose of a support 10 (in Figure 1 , a weld on nose).
  • a wear element 1 1 (in Figure 1 , a tooth) is positioned over the support 10.
  • the wear element 11 has a cavity suitable for housing therein the nose of the support 10 and has a hole 12 in one of the side walls of the cavity. In the assembled position, the hole 12 at
  • the locking element 1 and the internal element 2 are substantially cylindrical bodies suitable
  • the cylindrical body forming the locking element 1 has a base facing a base of the cylindrical body forming the internal element 2.
  • the internal element 2 is welded to the capsule 7 at the lower part of both elements (see
  • the movement means comprise rotation means.
  • the rotation means include a first inclined surface 15 arranged at the base of the internal element 2 facing the locking element 1 and a second inclined surface 16 at the base of the locking element 1 facing the internal element 2.
  • the first and the second inclined surfaces 15 and 16 have a
  • each first inclined surface 15 is paired with a second inclined surface 16.
  • each inclined surface 15 and 16 there is a seating surface 17 (the first seating
  • the seating surface 17 of the internal element 2 comprises a first elevation 18 at the end opposite the attachment area between the seating surface 17 and the first inclined surface 15. This first elevation 18 prevents the locking element 1 from being inadvertently rotated beyond this point, which would cause it to be abruptly retracted.
  • the seating surface 17 of the internal element 2 also comprises a second elevation 19 at the end close to the
  • this second elevation 19 is to prevent, due to the vibrations and shaking to which the locking device is subjected during use, the locking element 1 from being able to move from the stable position defined by the seating surfaces 17 and being retracted due to the force of the elastic means.
  • the transition from the retracted to the deployed position (and vice versa) is achieved by means of a 90° rotation (a fourth of a turn).
  • the base of the locking element 1 which is at the locking end 8, i.e. , the base opposite the internal element 2, has an hole 20 suitable for inserting a rotating tool.
  • This hole 20 has a shape with a substantially square cross-section.
  • the elastic means comprise a coil spring 4.
  • the spring 4 is assembled around a rod 3.
  • the rod 3 has a first end 21 fixed to the internal element 2 by means of a screw 13.
  • the second end 23 of the rod 3 is housed inside a cavity 24 arranged in the locking element 1 and is
  • the second end 23 has a head 25 retaining the spring 4.
  • the cavity 24 has an opening 26 oriented towards the internal element 2 and with the rod 3 going through same.
  • the opening 26 has a smaller size than the spring 4, such
  • the opening 26 is in a closing element 5 which is screwed to the locking element 1.
  • the closing element 5 has a larger diameter than the head 25, such that it is possible to introduce the head 25 and the spring 4 into the cavity 24 and then screw the
  • Figures 12 to 18 show a second embodiment of a locking device according to the invention.
  • the locking element 1 has a mounting hole 27 coaxial with the direction of movement and with a diameter greater than the maximum diameter of the rod 3 (i.e., the maximum diameter defined by the head 25).
  • the rod 3 can therefore be housed in the cavity 24 by introducing it
  • the end of the rod 3 opposite the head 25 is threaded and goes through the opening 26 (which is smaller than the spring 4 in this case, since the spring 4 is also introduced in the cavity 24 through the mounting hole 27). This threaded end can be screwed to the internal element 2, such that the ensemble is assembled.
  • a plug 28 closes the mounting hole 27.
  • the locking element is larger than the internal element and the cavity in which the head of the rod and the spring are housed is in the locking element.
  • the second embodiment of Figures 12 to 18 also includes air discharge means
  • these air discharge means may be included in a manner that is exactly identical in the first embodiment or the“symmetrical” embodiments indicated above.
  • the locking device includes an air discharge conduit 29 extending between this inner space and an upper end 30 of the air discharge
  • the air discharge conduit 29 must be“above” the O-ring 6, such that communication is established between the inner space and the outside which allows the exit of the air (see Figure 14 and the enlarged detail of Figure 16).
  • the most advantageous aspect is that the upper end 30 of the air discharge conduit 29 is close to (below) the O-ring 6 when the locking device is extended, such that upon initiating retraction, the upper end 30 is quickly located
  • the air discharge conduit 29 has been formed from a cavity or gap between the outer side surface of the locking element 1 and the inner side surface of the capsule 7.
  • the inner side surface of the capsule 7 is not completely cylindrical, but rather has a segment
  • Figure 18 which schematically shows a cross-section of the locking element 1 and the capsule 7). Therefore, between both sides surfaces there is a gap that is sufficient for allowing the passage of air. In any case, this gap must large enough so as to assure that the O-ring 6 no longer applies a sealed closure.
  • FIGs 19 and 20 show another embodiment of a locking device according to the invention.
  • the same references have been used for those elements which are common with the preceding embodiments.
  • the main difference resides in the fact that
  • the base of the internal element 2 facing the locking element 1 comprises a first guide surface 31 opposite the first inclined surface 15 and the base of the locking element 1 facing the internal element 2 comprises a second guide surface 32 opposite the second inclined surface 16.
  • the locking element 1 has a helical finger 33 which is suitable for being
  • the helical finger 33 defines the second inclined surface 16 and the second guide surface 32, which are on opposite sides of the helical finger 33.
  • the helical housing 34 defines the first inclined surface 15 and the first guide surface 31 , which are two opposing faces of the helical housing 34.
  • the second elevation 19 generally has a maximum elevation point 35 (in the solution shown in the drawings it is an arris) having a maximum height, in the sense of the direction of movement, with respect to the seating surface 17. This maximum height is determined such that it is assured that the locking element 1 cannot“jump out” of the seating surface 17 onto
  • the first guide surface 31 (which corresponds to the first inclined surface 15 which, in turn, corresponds to the first seating surface 17) extends, in the direction of movement, beyond the maximum elevation point 35. It is thereby assured that when the locking element 1 is in its extended position and rotation starts to take
  • Figure 11 shows an example in which two locking devices are used for fixing a wear element
  • FIG. 21 to 24 show another preferred embodiment of a locking device according to the invention.
  • the same references have been used for those elements which are common with the preceding embodiments, although some of them are organized in a different way.
  • the device comprises a locking element 1 , an internal element 2, a rod 3 and a spring 4.
  • locking element 1 has an O-ring 6 extending along its side perimeter. These components are housed inside a capsule 7. When the locking device is in the extended position, a locking end 8 of the locking element 1 projects from the capsule 7 (see Figures 23 and 24).
  • the internal element 2 is fixed to the capsule 7 through fixing means 41 (preferably a bolt) at an intermediate point of the capsule 7, so that between the bottom of the internal element 2 and
  • the inner end 37 of the capsule 7 there is a hollow space 36.
  • the capsule 7 has a side projection 14 which prevents the capsule 7 from being able to rotate with respect to the housing (9).
  • the main difference between this embodiment and the previous ones resides in the fixing and positioning of the rod 3 and the spring 4.
  • the rod 3 has the first end 21 that is threaded, and it is threaded to the locking element 1.
  • the second end 23 of the rod 3 is housed inside the hollow space 36 and is suitable for being moved according to the direction of movement along the hollow space 36 when the locking device is extended or retracted.
  • the second end 23 has a head 25 retaining the spring 4.
  • the internal element 2 has a central opening 39 communication the locking element 1 with the hollow space 36 and with the rod 3 going through this central opening 39.
  • opening 39 has a smaller size than the spring 4, such that the spring 4 is retained between the head 25 and the central opening 39.
  • Figure 25 shows a variant of this last embodiment in which the first end 21 of the rod 3 is not threaded to the locking element 1 but fixed to the locking element 1 through a hinged joint
  • Figure 26 shows one embodiment of locking device that is formed by two locking devices as shown in Figures 21 to 24 faced opposite to each other and with the inner end 37 of both capsules 7 welded together.
  • Figure 27 is a variant of the locking device of Figure 26 in which,
  • the device has only one capsule 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Earth Drilling (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Connection Of Plates (AREA)
  • Gripping On Spindles (AREA)
  • Lock And Its Accessories (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Agricultural Machines (AREA)

Abstract

La présente invention concerne un dispositif de verrouillage servant à accoupler un élément d'usure (11) à un support (10) dans un engin de terrassement, comprenant un logement (9) dans le support (10) et un trou (12) dans l'élément d'usure de telle façon que, dans une position assemblée, le logement (9) et le trou (12) soient au moins partiellement alignés. Le dispositif de verrouillage est introduit à l'intérieur du logement (9), et comporte : - un élément (1) de verrouillage, - un élément interne (2), - des moyens de déplacement aptes à déplacer l'élément (1) de verrouillage par rapport à l'élément interne (2), de manière réversible et selon une direction de déplacement, entre une position rétractée, dans laquelle l'élément de verrouillage se trouve entièrement à l'intérieur du logement et entièrement à l'extérieur du trou, et une position déployée, et - des moyens élastiques qui, dans la position déployée, exercent une force qui tend à rapprocher l'élément (1) de verrouillage de l'élément interne (2).
EP20715071.5A 2019-04-03 2020-04-02 Dispositif de verrouillage pour accoupler un élément d'usure à un support dans un engin de terrassement Active EP3947832B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/ES2019/070224 WO2020201587A1 (fr) 2019-04-03 2019-04-03 Dispositif de blocage pour fixer un élément d'usure dans un support d'une machine de travaux de terrassement
PCT/EP2020/059389 WO2020201418A1 (fr) 2019-04-03 2020-04-02 Dispositif de verrouillage pour accoupler un élément d'usure à un support dans un engin de terrassement

Publications (2)

Publication Number Publication Date
EP3947832A1 true EP3947832A1 (fr) 2022-02-09
EP3947832B1 EP3947832B1 (fr) 2023-04-26

Family

ID=66821276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20715071.5A Active EP3947832B1 (fr) 2019-04-03 2020-04-02 Dispositif de verrouillage pour accoupler un élément d'usure à un support dans un engin de terrassement

Country Status (11)

Country Link
EP (1) EP3947832B1 (fr)
CN (1) CN113646490B (fr)
AU (1) AU2020255269A1 (fr)
BR (1) BR112021019851A2 (fr)
CA (1) CA3135312C (fr)
CL (1) CL2021002451A1 (fr)
ES (1) ES2944715T3 (fr)
MX (1) MX2021012083A (fr)
PE (1) PE20212020A1 (fr)
WO (2) WO2020201587A1 (fr)
ZA (1) ZA202106676B (fr)

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US4664450A (en) * 1983-03-02 1987-05-12 Padley & Venables Limited Holder for a pick, and the combination of a pick and holder
US5709043A (en) * 1995-12-11 1998-01-20 Esco Corporation Excavating tooth
BRPI0418595B1 (pt) * 2004-03-30 2015-07-07 Metalogenia Sa Dispositivo removível para fixação de duas peças mecânicas, parte fêmea para ser unida a uma parte macho e contendo pelo menos um furo para a introdução de um pino e parte macho para ser acoplada a uma parte fêmea e que tem um invólucro dentro para receber um pino
AU2013203553B2 (en) * 2007-05-10 2017-02-02 Esco Group Llc Wear assembly for excavating equipment
FR2979647B1 (fr) * 2011-09-01 2013-10-04 Afe Metal 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
FR2979646B1 (fr) * 2011-09-01 2013-10-04 Afe Metal 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
EP2952639A1 (fr) * 2014-06-02 2015-12-09 Metalogenia Research & Technologies S.L. Dispositif de verrouillage destiné à fixer un élément d'usure
AU2016223359B2 (en) * 2015-02-23 2021-03-18 Metalogenia Research & Technologies S.L Device for attaching a wear or protection element to a shovel of a soil-shifting machine and corresponding attachment method and wear or protection system
AU2017224039B2 (en) * 2016-02-23 2020-04-09 Metalogenia Research & Technologies S.L. Locking device for securing a wear element in a support in an earth moving machine

Also Published As

Publication number Publication date
AU2020255269A1 (en) 2021-11-11
CL2021002451A1 (es) 2022-05-06
CA3135312A1 (fr) 2020-10-08
CA3135312C (fr) 2023-10-10
WO2020201418A1 (fr) 2020-10-08
ZA202106676B (en) 2023-06-28
CN113646490B (zh) 2023-07-21
EP3947832B1 (fr) 2023-04-26
BR112021019851A2 (pt) 2022-01-18
CN113646490A (zh) 2021-11-12
PE20212020A1 (es) 2021-10-18
ES2944715T3 (es) 2023-06-23
WO2020201587A1 (fr) 2020-10-08
MX2021012083A (es) 2021-11-03

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