EP3715535A1 - 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
EP3715535A1
EP3715535A1 EP19213533.3A EP19213533A EP3715535A1 EP 3715535 A1 EP3715535 A1 EP 3715535A1 EP 19213533 A EP19213533 A EP 19213533A EP 3715535 A1 EP3715535 A1 EP 3715535A1
Authority
EP
European Patent Office
Prior art keywords
coupling
changer
parts
locking
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.)
Granted
Application number
EP19213533.3A
Other languages
German (de)
English (en)
Other versions
EP3715535B1 (fr
Inventor
Thomas Friedrich
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.)
Kinshofer GmbH
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Kinshofer GmbH
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Filing date
Publication date
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Publication of EP3715535A1 publication Critical patent/EP3715535A1/fr
Application granted granted Critical
Publication of EP3715535B1 publication Critical patent/EP3715535B1/fr
Active legal-status Critical Current
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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 to 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 around said first pair of locking parts when the changer halves are pivoted together, a coupling carrier being attached to each changer half, each of 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 in particular have two spaced apart locking axes on one coupling part as locking elements, 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 or is pivoted into the locking receptacle, where said 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, which 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 comprise 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 comprise 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 actuated in order to be able to rotate the tool about an upright axis.
  • 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 manner mentioned.
  • the energy couplings are, however, only finally coupled to one another when the pivoting movement is 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 energy coupling parts are sensitive to wear and tear on the separate guide pins and holes mentioned. If the mentioned guide pins and holes no longer move exactly into one another without play, the mentioned tilting problem occurs again on the energy coupling parts and can lead to their damage or even destruction.
  • the present invention is therefore based on the object of creating an improved quick changer 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 should be made possible when the quick coupler halves are pivoted together, which is low-wear even with larger manufacturing tolerances and does not require any complicated mechanisms for pressing 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 energy coupling part pair 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 means that the source of errors in 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 one another. 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 tilting.
  • the rubber-elastic bearing of the coupling carrier enables all the energy coupling parts of one changer half to be aligned 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, make an additional fine adjustment of the two energy coupling parts located to one another, with the position and / or angular tolerances of the energy coupling parts mounted on a common coupling carrier being compensated at the same time can. For example, if 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 plugging 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 rubber-elastic 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 one another 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, simultaneous tilting of both coupling carriers can lead to the swiveling 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.
  • the aforementioned 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 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.
  • a coupling plug pair 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 aforementioned 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 which 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 positively pressed against one another in the coupled position, but 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 locking device which can be locked in a form-fitting manner 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 an adjusting 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 mushroom-shaped locking pins which are approximately aligned in the direction of the circular arc 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 aligned 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 attachment 4 and / or an intermediate rotary drive.
  • the two changer halves 2 and 3 comprise two pairs of interlocking locking parts, which 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, cf. comparing the Figures 4 and 5 .
  • a changer half in particular the handle-side changer half 2
  • 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 which can be displaced 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 from above down into the locking receptacle 10 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 onto 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
  • the clutch position shown is shown.
  • the second cross 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 cross 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 aforementioned energy coupling parts 12 and 13 can be hydraulic couplings, for example.
  • 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 which can be retracted therein, cf. Figure 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 attached 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 mounted 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 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 enable multi-axis tilting of the tips or front sections of the energy coupling parts to be inserted.
  • the mentioned entry pockets 20 and projections 21 allow complete pivoting together only when the coupling receptacle 6 has been correctly hung on the crossbar 13 and prevents pivoting together when this is not the case.
  • the mentioned entry pockets 20 and projections 21 do not form a centering device for the energy coupling parts 12 and 13 and can be rigidly attached to the changer halves 2 and 3, so that they do not cause the energy coupling parts 12 and 13 to tilt relative to the changer halves 2 and 3.
  • Said insertion pockets 20 and projections 21 are effective before the energy coupling parts 12 and 13 come into engagement and have so much play with respect to one another that they do not cause any pre-centering.
  • 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 frontal 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 insertion bevels 22 cause the energy coupling parts 12 and 13 to self-center and compensate for the rotational component of the arcuate path.
  • the rubber-elastic mountings of the energy coupling parts 12 and 13 and of 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 mounting 16, also allow all of the energy coupling parts 13 on the tool-side coupling part to tilt .
  • 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, the energy coupling parts being brought together at the same time as they are pivoted 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 shifted 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 with respect to the crossbar 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)
  • Shovels (AREA)
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

Publications (2)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19213533.3A Active EP3715535B1 (fr) 2019-03-27 2019-12-04 Dispositif de changement rapide pour outils de machines de construction

Country Status (5)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005093172A1 (fr) * 2004-03-24 2005-10-06 Lehnhoff Hartstahl Gmbh & Co. Dispositif de changement rapide comprenant un couplage hydraulique pour des supports situes sur un appareil de construction
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US11441290B2 (en) 2022-09-13
DE202019101747U1 (de) 2020-06-30
AU2019284100A1 (en) 2020-10-15
US20200308802A1 (en) 2020-10-01
CA3066156A1 (fr) 2020-09-27
EP3715535B1 (fr) 2021-06-23

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