WO2021074512A1 - Engin de travail et ensemble comprenant un tel engin - Google Patents
Engin de travail et ensemble comprenant un tel engin Download PDFInfo
- Publication number
- WO2021074512A1 WO2021074512A1 PCT/FR2020/051794 FR2020051794W WO2021074512A1 WO 2021074512 A1 WO2021074512 A1 WO 2021074512A1 FR 2020051794 W FR2020051794 W FR 2020051794W WO 2021074512 A1 WO2021074512 A1 WO 2021074512A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coupler
- plate
- arm
- opening
- pivot
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/283—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a single arm pivoted directly on the chassis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3686—Devices to connect tools to arms, booms or the like using adapters, i.e. additional element to mount between the coupler and the tool
Definitions
- the present invention relates to a work machine, as well as an assembly comprising such a work machine and an accessory that can be coupled to the coupler of said machine.
- a work machine comprising a rolling or tracked frame movable on the ground surface, a lifting arm mounted on the frame to pivot about a horizontal axis for up and down movement of the arm , and an accessory coupler which can be secured to the free end of the arm by a pivot link with an axis parallel to the pivot axis of the arm relative to the frame.
- An object of the invention is to provide a work machine whose design allows great versatility of the coupler without compromising its simplicity.
- the invention relates to a work machine comprising a movable frame movable on the surface of the ground, a lifting arm mounted on the frame to pivot about a so-called horizontal axis for movement upward. and lowering of the arm, and an accessory coupler which can be secured to the free end of the arm by a pivot link with an axis parallel to the pivot axis of the arm relative to the frame, characterized in that said coupler comprises a plate having a so-called rear face turned towards the arm, equipped with at least part of said pivot connection of the coupler to the arm and a so-called opposite front face, in that the plate is provided with a through opening and in that the part of said pivot connection of the coupler to the arm fitted to the rear face of the plate is arranged opposite said opening.
- a through opening allows an accessory disposed at least partially resting on the front face side of the plate to be able to project through said opening in the direction of the arm.
- the through opening makes it possible to manage the possible bulkiness of the accessory.
- such a design allows the realization of a low weight coupler and a limited offset of the accessory.
- said through opening delimited by edges, is an opening called open upwards in the upright state of the plate, one of the delimiting edges of said opening, forming the upper edge of said opening in the upright state of the plate, being an open edge.
- the plate in the upright state has a general U-shape, the space left free between the branches of the U forming said through opening.
- the through opening can thus occupy a central position.
- the coupler is provided with a reinforcing element extending on the rear face side of the plate. This reinforcing element prevents deformation of the plate without affecting the possibilities of coupling the accessory to the coupler.
- the reinforcing element which comprises a tubular element, connects the branches of the U together, at the level of the free end of the branches of the U.
- a risk of spacing or deformation of the branches of the U is prevented.
- the tubular element of the reinforcing element is of circular section.
- the tubular element of the reinforcing element is formed by an attached profile and welded to said plate by means of two end plates for connecting the profile to the back or rear face of the plate.
- Each end flange resting by its edge on the rear face of the plate being interposed between two gussets arranged on either side of the flange and coupling the flange to the rear face of the platform.
- the plate is provided, on the rear face side, with two aligned profiles, said profiles extending parallel to the pivot axis of the pivot connection of the coupler to the arm, on both sides. the other of said through opening of the coupler.
- each section is an L-shaped angle iron applied to the rear face of the plate.
- the coupler comprises, for the coupling of an accessory to the coupler, on the rear side of the plate, two locking axes, preferably parallel, extending transversely, preferably orthogonally to the axis of the pivot connection of the coupler to the arm, said locking pins each being equipped with a handle for driving in translation of said locking pin for moving said locking pin between an unlocked position and a locked position and d 'a return spring for said locking pin in the locked position.
- the locking pins thus allow the locking of the interlocking connection between coupler and accessory.
- the coupler plate is delimited by edges and the through opening of the coupler is an opening extending centrally between two opposite edges of said plate.
- the stage and the through opening are each bounded by edges, two opposite edges of the opening respectively extending equidistant from two opposite edges of the stage.
- the part of said pivot connection of the coupler to the arm fitted to the rear face of the plate and arranged opposite said opening forms a single unit with said plate.
- the part of the pivot connection of the coupler to the arm equipping the rear face of the plate forms with said plate a non-removable assembly.
- the part of said pivot connection of the coupler to the arm fitted to the rear face of the plate and arranged opposite said opening has the form of a sheath defining a through passage.
- the arm is provided with a jack which can be coupled to the coupler, on the rear face side of the coupler plate, by a pivoting link with an axis parallel to the axis of the link pivot of the arm to the coupler for driving the plate in rotation about the pivot axis of the pivot connection of the coupler to the arm in the actuated state of said jack.
- the plate is therefore an orientable plate using said jack.
- a further subject of the invention is an assembly comprising a work machine and an accessory characterized in that the work machine complies with that described above.
- FIG. 1 is a perspective view of a work machine according to the invention
- FIG. 2 shows a view of an arm of a work machine being coupled to a coupler
- FIG. 3 shows a view of the arm of Figure 2 in the state coupled to the coupler in a first orientation of the plate
- FIG. 4 shows a view of the arm of Figure 2 in the state coupled to the coupler in a second orientation of the plate
- FIG. 5 is a partial perspective view of a coupler
- FIG. 6 is a partial perspective view of a coupler taken from another angle
- FIG. 7 is a perspective view of a coupler during its coupling to an accessory
- FIG. 8 is a perspective view of the coupler of Figure 7 in the state coupled to an accessory
- the working machine 1, object of the invention comprises a movable frame 2 movable on the surface of the ground by means of wheels as in the example shown or by means of of caterpillars.
- This frame 2 is surmounted by a lifting arm 3 pivotally coupled to the frame 2.
- This lifting arm 3 is mounted on the frame 2 to pivot about an axis 4 called horizontal for movement up and down arm 3.
- the working machine 1 further comprises an accessory coupler 5 secured to the free end of the arm 3 by a pivot link 6 of axis parallel to the axis 4 of pivoting of the arm 3 relative to the frame 2 .
- the accessory 30 with which the coupler 5 can be coupled can affect a large number of forms depending on the work to be performed by the machine 1.
- this accessory 30 can be, for example, a bucket in the case of A load handling machine, a blade in the case of a snowplow type machine, a clamp, a broom or the like without departing from the scope of the invention.
- This coupler 5 comprises a plate 7 having a face 8 called rear facing towards the arm 3 equipped with a part 61 of the pivot link 6 of the coupler 5 to the arm 3 and a face 9 called opposite front. Another part of the pivot connection 6 of the coupler 5 to the arm 3 is carried by the arm 3 and a pin allows said parts of the pivot connection 6 to be maintained in the coupled state between them.
- the pivot link 6 therefore comprises a part 61 carried by the plate 7 and a part carried by the arm 3.
- the accessory 30 is intended to bear at least partially on the face 9 before the plate 7 in the state coupled to said plate 7.
- the arm 3 is fitted with a jack 22 which can be coupled to the coupler 5 on the rear 8 side of the plate 7 of the coupler 5 via a pivot link 23 with an axis parallel to the axis of the pivot link 6 of the arm to the coupler 5.
- This jack 22 allows the plate 7 to be rotated around the axis of the pivot link 6 of the coupler 5 to the arm 3 in the actuated state of the jack 22.
- This cylinder 22 is disposed on the face side of the underside of the arm 3.
- the extension of the cylinder 22 by output of the rod of the cylinder 22 causes a pivoting movement of the plate 7 upwards while a retraction of the actuator 22 by retraction of the rod of actuator 22 causes a pivoting movement of the plate 7 downwards as illustrated in FIG. 4.
- the plate 7 is thus able to occupy an upright position in which it extends in a vertical plane .
- This plate 7 which is delimited by edges 71 can be provided, along one or two of its so-called horizontal edges which extend parallel to the pivot axis of the pivot link 6 of the coupler 5 to the arm 3, reinforcing wings of said plate 7.
- the plate 7 is provided with a through opening 10 and the part 61 of the pivot connection 6, arranged on the rear face side of the plate 7 and which allows the coupler 5 to be connected to the arm 3, is arranged opposite said opening 10.
- the plate 7 has, in the upright state, a general U-shape.
- the space left free between the branches 15 of the U forms said through opening 10.
- This through opening 10 delimited by edges shown at 11, 12, 13 in the figures is an opening called open upwards in the upright state of the plate 7.
- One of the delimiting edges of said opening 10 forming the upper edge 11 of said opening in the upright state of the plate 7 is therefore an open edge.
- the lower edge 12 of the opening 10 is formed by part of the core 16 of the U.
- the opening 10 through the coupler 5 is an opening extending centrally between two opposite edges 71 of said plate 7, these opposite edges 71 of said plate 7 forming the vertical edges of said plate in the upright state of said plate.
- the part 61 of said pivot link 6 of the coupler 5 to the arm 3 fitted to the rear face 8 of the plate 7 and arranged opposite said opening 10 forms a single unit with said plate 7.
- the part of the pivot link 6 carried by the arm 3 is formed by two through passages each positionable at one end of the sleeve before insertion of a pin in the assembly thus formed.
- the part 61 of the pivot connection 6 of the coupler 5 to the arm 3 which has the shape of a sleeve is held integral with the plate 7 by two parallel flanges through which said sleeve passes. These two flanges are fixed to the lower edge 12 of the through opening 10 of the plate 7 and to a reinforcing element 14 which will be described below.
- the result of this arrangement is a reduced size of the opening 10 and of the pivot link 6 of the coupler 5 to the arm 3 without affecting the possibility for the accessory 30 to partially protrude through said opening 10 when the The size of the accessory 30 makes such an assembly necessary.
- the coupler 5 is provided with a reinforcing element 14 extending on the rear face 8 side of the plate 7.
- This reinforcing element 14 which comprises a tubular element of circular section, connects the branches of the U to one another at the level of the free end of the branches of the U.
- This reinforcing element 14 therefore forms a connecting bridge between the branches. of the U between them at the level of the free end of the branches of the U.
- the tubular element of this reinforcing element 14 is formed by a section attached and welded to said plate by means of two connecting end flanges of the profiled on the back or rear face of the plate 7.
- the tubular element of the reinforcing element 14 therefore extends apart from the plate 7 in the state fixed to said plate 7 to keep the through opening 10 of the plate 7 as free as possible.
- the plate 7 is provided, on the rear face side, with two profiles 17 aligned. These profiles 17 extend parallel to the pivot axis of the pivot link 6 of the coupler 5 to the arm 3 on either side of said through opening 10 of the coupler 5. These profiles 17 can each be formed by an L-shaped angle iron. applied on the back face of the plate. The rear face of the plate closes the L of each of the profiles 17. The two profiles 17 are arranged at the level of the free ends of the branches 15 of the U of the plate 7.
- the accessory 30 may include recessed parts covering these sections 17. This results in an interlocking connection between the coupler and the accessory.
- the coupler 5 comprises, on the rear face 8 of the plate 7, two locking pins 18, preferably made here parallel. These locking pins 18 extend transversely, preferably orthogonally, to the axis of the pivot link 6 of the coupler 5 to the arm 3.
- These locking pins 18 are each equipped with a handle 19 for driving in translation of the locking pin 18 for the movement of said locking pin 18 between an unlocked position and a locked position and a spring 20 return of said locking pin 18 at least in the locked position.
- the mounting of the coupler 5 and of an accessory 30 at the end of the arm 3 takes place as follows: the coupler 5 is placed on the ground and rests with the front face 9 of the plate 7 against the ground.
- the arm 3 is approached to the rear face 8 of the plate 7 to allow, using the ends of attached pins, the pivoting coupling of the jack 22 and of the arm 3 to the plate 7.
- Rings or circlips can be used for maintaining a first axle end in aligned housings of the arm and coupler and a second axle end in aligned housings of the actuator and coupler. These aligned housings each time delimit an axis passage in a manner known per se for the production of a pivot connection.
- the pivot link 6 between arm and coupler has already been described in detail above.
- the arm and the coupler are driven in movement to a position in which the coupler takes, by the front face 9 of its plate 7, resting on a bearing surface of the accessory 30, and the profiles 17 of the coupler are inserted from below into the recessed parts of the accessory 30, the opening of these recessed parts facing the ground.
- the position is locked by actuating the handles 19 for operating the locking pins 18, the free ends of which can be inserted into the housing of the accessory.
- the accessory 30 can protrude more or less through the opening 10 through the plate 7 in the direction of the arm 3.
- the machine 1 is ready to work.
- the disassembly of the coupler and of the accessory is carried out in the opposite way with the disassembly, first of all, of the accessory from the coupler and then, secondly, of the coupler from the arm.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Agricultural Machines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20797828.9A EP4045722A1 (fr) | 2019-10-17 | 2020-10-12 | Engin de travail et ensemble comprenant un tel engin |
US17/767,874 US12270178B2 (en) | 2019-10-17 | 2020-10-12 | Working machine and assembly comprising such a machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1911584A FR3102191B1 (fr) | 2019-10-17 | 2019-10-17 | Engin de travail et ensemble comprenant un tel engin |
FRFR1911584 | 2019-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021074512A1 true WO2021074512A1 (fr) | 2021-04-22 |
Family
ID=69158110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2020/051794 WO2021074512A1 (fr) | 2019-10-17 | 2020-10-12 | Engin de travail et ensemble comprenant un tel engin |
Country Status (4)
Country | Link |
---|---|
US (1) | US12270178B2 (fr) |
EP (1) | EP4045722A1 (fr) |
FR (1) | FR3102191B1 (fr) |
WO (1) | WO2021074512A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2527142A1 (fr) * | 1982-05-24 | 1983-11-25 | Kaessbohrer Fahrzeug Karl | Vehicule equipe d'un outil de travail |
EP2558651A1 (fr) * | 2010-03-30 | 2013-02-20 | C.M.C. S.r.l. - Società Unipersonale | Raccord de sûreté rapide pour coupler un outil à une machine d'actionnement |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3874533A (en) * | 1974-01-07 | 1975-04-01 | Esco Corp | Excavator basket-stick connection |
US7290977B2 (en) * | 2005-03-09 | 2007-11-06 | Clark Equipment Company | Powered coupling of attachment hydraulics |
US8024875B2 (en) * | 2005-12-02 | 2011-09-27 | Clark Equipment Company | Compact excavator implement interface |
US7832127B2 (en) * | 2007-10-26 | 2010-11-16 | Charles E. Hill & Associates, Inc. | Apparatus for attaching a work tool to a loader |
GB2543331B (en) * | 2015-10-15 | 2021-06-23 | Bamford Excavators Ltd | Quick hitch |
-
2019
- 2019-10-17 FR FR1911584A patent/FR3102191B1/fr active Active
-
2020
- 2020-10-12 WO PCT/FR2020/051794 patent/WO2021074512A1/fr active IP Right Grant
- 2020-10-12 EP EP20797828.9A patent/EP4045722A1/fr active Pending
- 2020-10-12 US US17/767,874 patent/US12270178B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2527142A1 (fr) * | 1982-05-24 | 1983-11-25 | Kaessbohrer Fahrzeug Karl | Vehicule equipe d'un outil de travail |
EP2558651A1 (fr) * | 2010-03-30 | 2013-02-20 | C.M.C. S.r.l. - Società Unipersonale | Raccord de sûreté rapide pour coupler un outil à une machine d'actionnement |
Also Published As
Publication number | Publication date |
---|---|
FR3102191A1 (fr) | 2021-04-23 |
FR3102191B1 (fr) | 2021-10-08 |
EP4045722A1 (fr) | 2022-08-24 |
US20240084544A1 (en) | 2024-03-14 |
US12270178B2 (en) | 2025-04-08 |
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