EP3715535B1 - Dispositif de changement rapide pour outils de machines de construction - Google Patents

Dispositif de changement rapide pour outils de machines de construction Download PDF

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Publication number
EP3715535B1
EP3715535B1 EP19213533.3A EP19213533A EP3715535B1 EP 3715535 B1 EP3715535 B1 EP 3715535B1 EP 19213533 A EP19213533 A EP 19213533A EP 3715535 B1 EP3715535 B1 EP 3715535B1
Authority
EP
European Patent Office
Prior art keywords
change unit
coupling
locking
parts
energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19213533.3A
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German (de)
English (en)
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EP3715535A1 (fr
Inventor
Thomas Friedrich
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Kinshofer GmbH
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Kinshofer GmbH
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Publication of EP3715535A1 publication Critical patent/EP3715535A1/fr
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Publication of EP3715535B1 publication Critical patent/EP3715535B1/fr
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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
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • 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
    • E02F3/3613—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with means for absorbing any play therebetween
    • 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
    • E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
    • 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
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • 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
    • E02F3/3631—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a transversal locking element
    • 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
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

  • the present invention relates to a quick coupler for coupling a tool to an excavator stick or a similar tool manipulator, with two interlockable changer halves which can be coupled to one another on a first pair of locking parts and can be pivoted together around the coupled, first pair of locking parts into a coupling position in which a A second pair of locking parts of the changer halves can be locked, with energy coupling parts being provided on each of the two changer halves, which move together when the changer halves are pivoted together around said first pair of locking parts, a coupling carrier being attached to each changer half, which carries several energy coupling parts.
  • quick couplers are often used to connect various tools such as clearing buckets, shell grabs or demolition tongs to an excavator stick or similar tool operators such as articulated booms in order to be able to use different tools without long changeover times.
  • Such quick couplers can have, as locking elements, in particular two spaced apart locking axes on one coupling part, while the other coupling part, in particular the coupling part on the excavator arm side, can have a preferably hook-shaped coupling receptacle for hooking onto a first of the two locking axes and a locking receptacle for locking on the second locking axis.
  • the two coupling parts can be pivoted towards each other, the locking axis seated in the coupling receptacle forming the axis of rotation, so that the second locking axis moves into the locking receptacle or is pivoted into it, where the mentioned second locking axis then by a locking element how, for example, an extendable wedge can be locked so that at the same time it is no longer possible to move the first locking axis out of the coupling receptacle.
  • an externally energized actuating actuator is provided, which can be designed as a hydraulic cylinder, for example, and can usually be actuated by hydraulic pressure from the device.
  • the mentioned locking axes on the one coupling part can be formed by locking bolts that can extend parallel to each other on the corresponding coupling part, but instead of such bolts, other structural parts of the coupling part such as protruding lugs, stub axles, engagement stumps in the form of projections or Recesses, for example in the form of pockets, can serve as a locking part, the shape of which is adapted to the coupling receptacle or the locking receptacle of the other coupling part.
  • Such quick couplers are also subject to standards in terms of the dimensions and the locking parts in order to ensure the compatibility of a coupler half used on the excavator arm with various tools on which a coupler half is mounted, depending on the tool from different manufacturers and must be compatible with the stem-side coupler half so that the two coupler halves can move together and lock.
  • standardization has taken place, for example, in the form of the so-called S coupler or the S standard, which specifies the dimensions and arrangement of the locking elements and receiving jaws and was specified by the Swedish Maskinleverantörerna institute and was last published on May 28, 2010.
  • this S-coupler has two parallel, spaced-apart transverse bolts as locking parts on one coupler half, while the other coupler half has a mouth-shaped coupling receptacle on the one hand and an L-shaped locking receptacle on the other hand, which is locked by a pair of extendable locking bolts or can be closed to a then likewise U-shaped or mouth-shaped receptacle.
  • Such quick changers are often provided with energy couplings, which can include hydraulic couplings or electrical current couplings, for example, in order to be able to provide energy to the tool to be coupled to an actuating actuator provided on the second changer half.
  • energy couplings can include hydraulic couplings or electrical current couplings, for example, in order to be able to provide energy to the tool to be coupled to an actuating actuator provided on the second changer half.
  • rotary motors can be provided on the side of the changer half to be coupled, which are hydraulically operated in order to be able to rotate the tool about an upright axis.
  • actuating actuators such as hydraulic cylinders or spindle drives with electric motors can also be supplied with energy in this way.
  • the font shows EP 20 18 456 B1 a quick changer, the changer halves of which are pivoted together in the above-mentioned manner.
  • the energy couplings are only finally coupled to one another when the pivoting movement has been completed and the second pair of locking parts are locked together. Specifically, the energy couplings are positively pressed against one another when the second pair of locking parts locks.
  • a locking part to be moved has a wedge or inclined surface which, when the locking part is moved, presses the energy couplings upwards onto the mating coupling pieces due to the wedge effect.
  • the force-fit pressing of the energy coupling parts against one another places a relatively high load on them and can lead to premature wear.
  • the vibrations that occur in rough construction site operations lead to micro-movements between the energy coupling parts, which lead to continuous abrasion due to the frictional tensioning of the energy coupling parts.
  • the wedge surface that presses the energy coupling parts against one another is itself subject to corresponding wear. So dirt on the wedge surface mentioned can lead to the sensitive energy couplings being pressed against one another too strongly.
  • the present invention is therefore based on the object of creating an improved quick coupler of the type mentioned, which avoids the disadvantages of the prior art and further develops the latter in an advantageous manner.
  • a reliable coupling of the energy coupling parts when pivoting the quick coupler halves together should be made possible, which is wear-resistant even with larger manufacturing tolerances and does not require any complicated mechanisms for pushing down or separately actuating the energy circuit couplings.
  • the energy coupling parts find each other when pivoting the changer halves together and align themselves with one another so that the energy coupling parts move exactly into one another despite the circular path movement caused by pivoting the changer halves together. It is further proposed that the energy coupling parts are designed to be self-centering, with at least one of the coupling carriers being elastically tiltable on its associated changer half in a multi-axis manner by means of a rubber-elastic carrier mounting is mounted and at least one energy coupling part of each pair of energy coupling parts moving together is supported by a rubber-elastic coupling part bearing in a multiaxial, elastically tilted manner on the associated coupling carrier.
  • the self-centering of the energy coupling parts on one another the source of errors from manufacturing tolerances between separate guide bolts / holes and the energy coupling parts can be eliminated, so that the energy coupling parts are more precisely aligned with one another. If the rotational component of the circular path movement is compensated for via separate guide pins and holes, positional and angular tolerances between the guide pins and holes on the one hand and the energy coupling parts on the other hand or tilting of the energy coupling parts lead to each other. Surprisingly, the self-aligning of the energy coupling parts to one another therefore leads to less wear.
  • the multi-stage, rubber-elastic mounting of the energy coupling parts enables particularly gentle self-alignment, which compensates for the rotational component of the circular path movement, whereby the rubber-elastic bearings facilitate the finding of the energy coupling parts and the rubber-elastic actuating forces cause tilting or tendency to reduce canting.
  • the rubber-elastic bearing of the coupling carrier enables, in a first stage, the alignment of all energy coupling parts of one changer half relative to the energy coupling parts of the other changer half. Since several pairs of energy coupling parts have to be found, the rubber-elastic mounting of the entire coupling carrier enables a kind of pre-centering.
  • the rubber-elastic bearings which also allow individual energy coupling parts to tilt relative to the associated coupling carrier, effect an additional fine adjustment of the two energy coupling parts to each other, with the position and / or angular tolerances of the energy coupling parts, which are mounted on a common coupling carrier, being compensated at the same time can. If, for example, two energy coupling pins are not aligned exactly parallel to one another on a coupling plate, this would occur even if the Coupling plate forcibly jamming or promoting wear of the plug-in movements of the two coupling pins in the energy coupling sleeve on the other half of the changer.
  • the additional rubber-elastic bearings which allow the energy coupling parts to tilt relative to the coupling carrier, can compensate for such shape tolerances or position and angle tolerances.
  • both clutch carriers can be elastically mounted on both changer halves so that each clutch carrier can tilt elastically in multiple axes relative to its changer half.
  • only one of the clutch carriers can be mounted in a rubber-elastic manner on its changer half, while the clutch carrier can be rigidly attached to the other changer half.
  • the self-centering of the energy coupling parts on each other works better if only one of the two coupling carriers can tilt elastically, whereby it can be assumed here that with both-sided rubber-elastic mounting of both coupling carriers, a simultaneous tilting of both coupling carriers can lead to the swivel movement path being overcompensated or the energy coupling parts tilt more if both coupling carriers tilt in the same direction.
  • the rubber-elastic bearings which enable the energy coupling parts to tilt relative to the coupling carrier, can in particular be provided at least on the energy coupling parts that are mounted on the coupling carrier, which is itself elastically mounted.
  • said rubber-elastic bearings which enable the energy coupling parts to tilt relative to the coupling carrier, are provided on all energy coupling parts on both changer halves. Accordingly, the energy coupling parts can tilt on the one changer half relative to the coupling carrier which is rigidly mounted there. At the same time, the energy coupling parts on the other half of the changer can also tilt in relation to the coupling carrier, which is itself tiltably mounted.
  • the energy coupling parts mentioned can in particular form coupling plugs that can be plugged into one another.
  • a pair of coupling plugs that can be plugged into one another can comprise, on the one hand, a coupling pin and, on the other hand, a coupling sleeve into which said coupling pin can be inserted.
  • the mentioned energy coupling parts can form hydraulic coupling parts in order to be able to pass pressure fluid over the two changer halves.
  • at least one electrically designed energy coupling part pair can also be provided.
  • the self-centering design of the energy coupling parts can have an insertion bevel on at least one energy coupling part of a pair of energy coupling parts to be coupled. If coupling pins and coupling sleeves that can be plugged into one another are provided in the aforementioned manner, an insertion bevel can be formed in particular on the front edge of the coupling sleeve.
  • the mentioned coupling pins and sleeves can, apart from the mentioned insertion bevel, in particular have an at least approximately cylindrical contour.
  • the mentioned entry slope can basically be contoured differently, for example have a cup-shaped curved course.
  • the mentioned entry slope can have a conical contouring. If the respective energy coupling part is viewed in a longitudinal section, the insertion bevel can have a straight flank course.
  • the insertion bevel can be designed with a cone angle of 2 times 20 ° to 2 times 60 ° or 2 times 30 ° to 2 times 50 °.
  • the energy coupling parts are not pressed against one another in a force-locking manner in the coupled position, but rather retain a certain axial play in order not to have any micro-movements that promote wear due to vibrations occurring during operation.
  • a form-fitting securing or locking mechanism can be provided which prevents the rubber-elastic bearings from being pushed apart and / or from being overloaded.
  • a positively lockable locking device can be provided which, in the normal operating situation when the energy circuit coupling parts are closed, has play and gives the energy coupling parts a certain freedom of movement.
  • such a locking device which operates solely in a form-fitting manner, can have a displaceable bolt which is mounted displaceably on a quick coupler half, for example on the coupling carrier provided there, whereby the displaceability can be provided in a plane perpendicular to the direction of the coupling movement of the energy coupling parts moving into one another.
  • Said displaceable bolt can be locked and / or unlocked by a setting actuator, for example in the form of a pressure medium cylinder.
  • the locking device can be designed to be self-opening, in particular such that the locking device itself falls into the lock regardless of its current state or its current position and / or when the changer halves are pivoted together and / or the moving together of the energy coupling parts is optionally pressed when the locking part is in the closed position.
  • Such a self-opening design of the locking device prevents the locking device from moving the energy coupling parts together if the locking device was inadvertently not in the open position when the energy coupling parts were moved together.
  • Such a self-opening design of the locking device can advantageously be achieved in that a displaceable bolt and / or a pawl to be locked has a run-in bevel which exerts a wedge effect on the displaceable locking part and pushes the displaceable locking part open when the said bevel hits the opposing surface.
  • the locking device can have a plurality of locking pins designed like a mushroom head, which are approximately aligned in the direction of the circular arc path and look forward with the mushroom head when the changer halves are moved together.
  • the locking part complementary to the mushroom head-shaped locking pins can be a locking plate in which recesses can be provided, preferably in the form of through holes or open grooves through which the mushroom head-shaped locking pins can pass. If the mushroom head-shaped locking pins have passed through the recess with their mushroom head, the locking part can move transversely to the retraction direction of the locking pins and reach under the mushroom heads.
  • the quick coupler 1 can be mounted between the free end of the boom arm 5 of an excavator 30 and the tool 4 to be attached to it, wherein said attachment tool 4 can be designed, for example, as a digging spoon, like this Figure 1 shows, but can also include other construction, handling or demolition tools, for example in the form of shell grippers, demolition tongs, scissors or the like in a manner that is conventional per se.
  • the named quick coupler 1 can be mounted on the named boom arm 5 by means of a handle-side changer half 2, on the one hand, so that it can be pivoted about a horizontal pivot axis oriented transversely to the longitudinal axis of the boom arm 5, so that the quick coupler 1 together with the tool 4 attached to it, for example by means of a pressure cylinder 36 and an intermediate pivot piece 37 can be pivoted relative to the boom arm 5.
  • a tool-side changer half 3 - cf. Figure 2 - Can be attached to the attachment tool 4 and / or an intermediate rotary drive.
  • the two changer halves 2 and 3 comprise two pairs of interlocking locking parts that allow a two-stage coupling or locking process.
  • a pair of locking elements is hooked or coupled, in order then to pivot the two changer halves together around the coupled first locking pair.
  • the second pair of locking parts are then locked together, compare FIG Figures 4 and 5 .
  • a changer half in particular the handle-side changer half 2 can comprise a coupling receptacle 6 as locking parts as well as a slidable bolt 11 movable in front of the opening of a locking receptacle 10, said locking receptacle 10 being able to have a different opening direction than the coupling receptacle.
  • the coupling receptacle 6 can be open facing away from the locking receptacle 10, while the locking receptacle 10 can be designed to be open towards the other changer half 3.
  • the second locking part of the changer half 2 could, however, also have a locking jaw that is displaceable as a whole, as is known per se.
  • the bolt 11 can be moved approximately in a direction transverse to the opening of the four-bolt receptacle 10 in order to be able to be pushed in front of this opening.
  • the bolt 11 can be moved down into the locking receptacle 10 from above at a slightly inclined angle.
  • the other changer half in particular the tool-side changer half 3, can have two transverse bolts 33 and 34 as locking parts, which can be aligned parallel to one another and spaced from one another so far that they fit into the openings of the coupling and locking receptacles 6 and 10.
  • the coupling receptacle 6 is first hooked into the cross bolt 33, whereby a securing element 7 can catch or secure the cross bolt 33 in the coupling receptacle 6 in order to prevent it from accidentally slipping out when the two changer halves 2 and 3 are pivoted together.
  • Said securing element 7 can, for example, be spring-loaded and opened by a pressure actuator when the quick coupler is to be uncoupled.
  • the two changer halves 2 and 3 can be pivoted together about the pivot axis formed by the hooked coupling receptacle 6 or the transverse bolt 33 caught therein, until the in Figure 5 Coupling position shown is shown.
  • the second transverse bolt 34 is retracted into the locking receptacle 10 so that the bolt 11 can be moved into the locking position in order to secure or fix the transverse bolt 34 in the locking receptacle 10.
  • the bolt 11 can be actuated by a pressure cylinder 8, for example.
  • energy coupling parts 12 and 13 are provided on a section of the changer halves 2 and 3 spaced apart from the coupling receptacle 6 and can be arranged in particular on an end section of the changer halves 2 and 3 opposite the coupling receptacle 6.
  • the mentioned energy coupling parts 12 and 13 can be hydraulic couplings, for example. Independently of this, the energy coupling parts 12 and 13 can be designed as plug-in couplings which can be moved into one another and can comprise coupling sleeves and coupling pins that can be inserted therein, see FIG. 7.
  • a coupling carrier 14 and 15 is provided on each changer half 2 and 3, which coupling carrier 14 and 15 can be designed, for example, in the form of a carrier plate on which the energy coupling parts 12 and 13 can be mounted.
  • the coupling carrier 14 can be rigidly mounted on “its” changer half, wherein the rigidly mounted coupling carrier 14 can be provided in particular on the changer half 2 on the handle.
  • the other coupling carrier 15 can be multiaxial on the other changer half, in particular the tool-side changer half 3, by means of a rubber-elastic bearing 16 be mounted elastically tiltable.
  • Said rubber-elastic coupling carrier bearing 16 can advantageously comprise at least one rubber bearing block 17 which is fastened on the one hand to the changer half 3 and on the other hand carries the coupling carrier 15.
  • two block-shaped or plate-shaped rubber bearing parts 17 can be inserted into recesses in the changer half 3, which can extend, for example, transversely to the longitudinal extension of the coupling carrier 15.
  • the coupling carrier 15 is fastened to the rubber bearing parts 17 fastened to the changer half 3, for example by means of screw bolts or in some other way, so that the bearing forces are dissipated via the rubber bearing parts 17.
  • the energy coupling parts 12 and 13 are movably supported in themselves and / or relative to the respective coupling carrier 14 or 15 by rubber-elastic coupling bearings 18, so that the energy coupling parts 12 and 13 move relative to their coupling carriers 14 and 15, in particular in a multi-axis elastic manner can tilt.
  • the rubber-elastic coupling bearings 18 can advantageously comprise several ring-shaped or plate-shaped rubber bearing parts 19, which are connected between adjacent sections of the energy coupling parts 12 and 13 and / or can be provided between the energy coupling parts 12 and 13 on the one hand and the coupling carriers 14 and 15 on the other.
  • Said rubber bearing parts 19 can form rubber joints which allow multi-axis tilting of the tips or front sections of the energy coupling parts to be inserted.
  • the energy coupling parts 12 and 13 center themselves on one another.
  • the self-centering design of the energy coupling parts 12 and 13 includes insertion bevels 22 on the front edges of the sleeve-shaped coupling parts 12, which can be designed, for example, in the form of a conical insertion bevel or a conical insertion funnel. Alternatively or additionally, a corresponding insertion bevel, in particular in the form of a conical bevel, could also be provided on the front edges of the coupling pins 13.
  • the mentioned lead-in bevels 22 cause the energy coupling parts 12 and 13 to self-center and compensate for the rotational component of the circular arc path.
  • the rubber-elastic bearings of the energy coupling parts 12 and 13 and the coupling carrier 15 allow the energy coupling parts 12 and 13 to tilt relative to one another and relative to the respective coupling carrier and, via the rubber-elastic carrier bearing 16, also to tilt all energy coupling parts 13 on the tool-side coupling part .
  • the energy coupling parts 12 and 13 are thus completely and solely coupled to one another by pivoting the two changer halves 2 and 3 together, with the energy coupling parts moving together at the same time as they are pivoting together and being completed before the bolt 11 is locked on the locking receptacle 10.
  • a form-fitting locking device 23 can be provided which locks the two coupling carriers 14 and 15 in a form-fitting manner and prevents them from moving apart.
  • the locking device 23 comprises, on the one hand, locking pins 24 with an undercut head 25, which can be retracted through locking recesses 27 of a movable transverse bolt 26, cf. Figure 8 .
  • Said head 25 of the locking pins 24 can in particular be approximately mushroom-shaped and / or comprise an inclined and / or conically contoured inlet area which enters the locking recesses 27 in order to press them open if the cross bolt 26 is not in its open position.
  • Said cross bar 26 can be displaced or moved transversely to the retraction direction of the locking pins 24, which can be done by a suitable actuator, for example in the form of a pressure medium cylinder.
  • the locking pins 24, in particular the undercut heads 25 have clearance or play relative to the cross bar 26, so that the energy coupling parts 12 and 13 are not pressed against each other in a force-locking manner, but are merely secured in a form-locking manner if this is required.

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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)
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Claims (13)

  1. Dispositif de changement rapide destiné à l'accouplement d'un outil (4) à un bras de pelle (5) ou un autre guide d'outil, comprenant deux moitiés de dispositif de changement (2, 3) verrouillables l'une avec l'autre, qui peuvent être accouplées l'une à l'autre au niveau d'une première paire de parties de verrouillage (6, 33) et qui peuvent être pivotées l'une vers l'autre, autour de la première paire accouplée de parties de verrouillage, dans une position d'accouplement, dans lequel une seconde paire de parties de verrouillage (10, 11 ; 34) des moitiés de dispositif de changement (2, 3) peut être verrouillée, des parties de couplage d'énergie (12, 13) étant prévues respectivement sur les deux moitiés de dispositif de changement (2, 3), qui, lors du pivotement l'une vers l'autre des moitiés de dispositif de changement (2, 3) sur l'axe de pivotement, qui est formé par ladite première paire de parties de verrouillage, se rejoignent, un support d'accouplement (14, 15) étant installé sur chaque moitié de dispositif de changement (2, 3), qui porte respectivement plusieurs parties de couplage d'énergie (12, 13), caractérisé en ce que les parties de couplage d'énergie (12, 13) sont réalisées à centrage automatique, au moins un des supports d'accouplement (15) étant monté sur la moitié de dispositif de changement (3) associée de manière à pouvoir être basculé élastiquement sur plusieurs axes au moyen d'un palier de support (16) élastique caoutchouteux et au moins une partie de couplage d'énergie (12, 13) de chaque paire de partie de couplage d'énergie (12, 13) se rejoignant étant monté sur le support d'accouplement (14, 15) associé, de manière à pouvoir être basculé élastiquement sur plusieurs axes, par un support de partie de couplage (18) élastique caoutchouteux.
  2. Dispositif de changement rapide selon la revendication précédente, dans lequel les parties de couplage d'énergie (12, 13) comportent des chanfreins de centrage (22) sur des portions de bord frontales.
  3. Dispositif de changement rapide selon la revendication précédente, dans lequel les chanfreins de centrage (22) présentent des contours en forme de cônes de centrage.
  4. Dispositif de changement rapide selon l'une des revendications précédentes, dans lequel des mouvements basculants des parties de couplage d'énergie (12, 13) sont commandés uniquement par le centrage automatique des parties de couplage d'énergie (12, 13) pour compenser une composante de rotation de la trajectoire en arc de cercle des parties de couplage d'énergie (12, 13) se déplaçant l'une vers l'autre lors du pivotement l'une vers l'autre des moitiés de dispositif de changement (2, 3).
  5. Dispositif de changement rapide selon l'une des revendications précédentes, dans lequel le support d'accouplement (14) sur une moitié de dispositif de changement (2), en particulier la moitié de dispositif de changement côté bras, est monté de manière rigide sur la moitié de dispositif de changement et l'autre support d'accouplement (15) est monté sur l'autre moitié de dispositif de changement (3), de manière à pouvoir être basculé élastiquement sur plusieurs axes, par le palier de support (16) élastique caoutchouteux.
  6. Dispositif de changement rapide selon l'une des revendications précédentes, dans lequel le palier de support (16) élastique caoutchouteux dudit un support d'accouplement (15) comporte deux parties de support en caoutchouc (17) de préférence en forme de bloc ou de plaque, qui sont reçues dans des évidements de support dans la moitié de dispositif de changement (2), le support d'accouplement (15) étant fixé avec des portions d'extrémité opposées aux deux parties de support en caoutchouc (17).
  7. Dispositif de changement rapide selon l'une des revendications précédentes, dans lequel les supports de couplage (18) élastiques caoutchouteux, au moyen desquels les parties de couplage d'énergie (12, 13) peuvent être basculées élastiquement sur plusieurs axes par rapport au support d'accouplement (14, 15) associé, comportent des parties de support en caoutchouc (19) de forme annulaire ou plate, qui relient entre elles des portions voisines des parties de couplage d'énergie (12, 13).
  8. Dispositif de changement rapide selon la revendication précédente, dans lequel chaque partie de couplage d'énergie (12, 13) comporte au moins deux parties de support en caoutchouc (19), qui sont disposées espacées l'une de l'autre et qui relient respectivement deux portions de partie de couplage voisines.
  9. Dispositif de changement rapide selon l'une des revendications précédentes, dans lequel les parties de couplage de circuit d'énergie (12, 13) sont réalisées sous la forme de coupleurs hydrauliques.
  10. Dispositif de changement rapide selon l'une des revendications précédentes, dans lequel un dispositif de verrouillage (23) fonctionnant uniquement avec complémentarité de forme est prévu pour le verrouillage des parties de couplage d'énergie (12, 13) dans la position couplée, ledit dispositif de verrouillage (23) comportant un jeu dans la position verrouillée et prévoyant une mobilité limitée des parties de couplage d'énergie (12, 13) l'une par rapport à l'autre.
  11. Dispositif de changement rapide selon la revendication précédente, dans lequel le dispositif de verrouillage (23) comporte, sur une moitié de dispositif de changement (2), un verrou transversal (26) déplaçable doté d'évidements de verrouillage (27) et comprend en outre des ergots de verrouillage (24) dotés de têtes contre-dépouillées (25) montés sur l'autre moitié de dispositif de changement (3), lesdits ergots de verrouillage (24) pouvant être avancés avec leurs têtes contre-dépouillées (25) dans les évidements de verrouillage (27) du verrou transversal (26), le verrou transversal (26) pouvant être déplacé sous les têtes contre-dépouillées (25) par coulissement transversal.
  12. Dispositif de changement rapide selon la revendication précédente, dans lequel le verrou transversal (26) coulissant peut être verrouillé et/ou déverrouillé par un actionneur à fluide sous pression.
  13. Dispositif de changement rapide selon l'une des deux revendications précédentes, dans lequel les têtes de verrouillage (25) des ergots de verrouillage (24) comportent un chanfrein d'introduction de préférence en forme de cône, au moyen duquel le verrou transversal (26) peut être ouvert en le poussant de sa position verrouillée à sa position déverrouillée et les ergots de verrouillage (25) peuvent être avancés dans les évidements de verrouillage (27) du verrou transversal (26).
EP19213533.3A 2019-03-27 2019-12-04 Dispositif de changement rapide pour outils de machines de construction Active EP3715535B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202019101747.3U DE202019101747U1 (de) 2019-03-27 2019-03-27 Schnellwechsler für Baumaschinenwerkzeuge

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EP3715535A1 EP3715535A1 (fr) 2020-09-30
EP3715535B1 true EP3715535B1 (fr) 2021-06-23

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US (1) US11441290B2 (fr)
EP (1) EP3715535B1 (fr)
AU (1) AU2019284100A1 (fr)
CA (1) CA3066156A1 (fr)
DE (1) DE202019101747U1 (fr)

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FR3072981B1 (fr) * 2017-10-26 2021-03-19 Groupe Mecalac Dispositif de connexion automatique entre un outil et un porte-outil d'engin de chantier ou de travaux publics
DE102020115197A1 (de) * 2020-06-08 2021-12-09 OilQuick Deutschland KG Adapter für ein Schnellwechselsystem und Schnellwechselsystem mit einem derartigen Adapter
CN113123385B (zh) * 2021-04-16 2022-03-18 湖南大学 一种用于应急救援工程装备的全自动快换装置
GB2606546B (en) * 2021-05-12 2023-05-17 Caterpillar Work Tools Bv A coupling arrangement for coupling a tool to a machine

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PL200100B1 (pl) * 2001-03-09 2008-12-31 Liebherr Hydraulikbagger Szybkozłącze
DE102004014824B4 (de) * 2004-03-24 2019-08-01 Lehnhoff Hartstahl Gmbh Schnellwechselvorrichtung mit einer hydraulischen Kupplung für die Medien an einem Baugerät
DE102004014823B4 (de) * 2004-03-24 2006-12-07 Lehnhoff Hartstahl Gmbh & Co Schnellkupplungsvorrichtung an einem Baugerät mit Ventilzentrierung
DE102004015471A1 (de) * 2004-03-26 2005-10-13 Caterpillar Work Tools B.V. Schnellwechsler für Bagger
EP2450490B1 (fr) 2006-05-02 2018-04-04 Kinshofer GmbH Dispositif de verrouillage sécurisé pour un couplage rapide
DE102006023420B4 (de) * 2006-05-17 2013-02-28 Lehnhoff Hartstahl Gmbh & Co. Kg Schnellwechselvorrichtung
AT505238B1 (de) * 2007-06-13 2016-03-15 Martin Holding Gmbh Kupplung
DE202012009838U1 (de) 2012-07-24 2013-10-25 Kinshofer Gmbh Schnellkuppler
FI2902582T4 (fi) * 2014-01-29 2023-03-27 Mastokokoonpano ja menetelmä työkoneyksikön liittämiseksi mastokokoonpanon mastovaunuun
DE202014001328U1 (de) 2014-02-13 2015-05-15 Kinshofer Gmbh Schnellkuppler
WO2018074937A1 (fr) * 2016-10-21 2018-04-26 Doherty Engineered Attachments Limited Ensemble de couplage et élément de fixation comprenant un élément de couplage
FR3072981B1 (fr) * 2017-10-26 2021-03-19 Groupe Mecalac Dispositif de connexion automatique entre un outil et un porte-outil d'engin de chantier ou de travaux publics
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US11441290B2 (en) 2022-09-13
US20200308802A1 (en) 2020-10-01
CA3066156A1 (fr) 2020-09-27
EP3715535A1 (fr) 2020-09-30
DE202019101747U1 (de) 2020-06-30
AU2019284100A1 (en) 2020-10-15

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