EP3409840B1 - Betätigungsvorrichtung - Google Patents

Betätigungsvorrichtung Download PDF

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Publication number
EP3409840B1
EP3409840B1 EP18175224.7A EP18175224A EP3409840B1 EP 3409840 B1 EP3409840 B1 EP 3409840B1 EP 18175224 A EP18175224 A EP 18175224A EP 3409840 B1 EP3409840 B1 EP 3409840B1
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EP
European Patent Office
Prior art keywords
cam
quick coupler
actuation device
toothed
roller
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
EP18175224.7A
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English (en)
French (fr)
Other versions
EP3409840A1 (de
Inventor
Davide Cangini
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.)
Cangini Benne SRL
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Cangini Benne SRL
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Publication date
Application filed by Cangini Benne SRL filed Critical Cangini Benne SRL
Publication of EP3409840A1 publication Critical patent/EP3409840A1/de
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Publication of EP3409840B1 publication Critical patent/EP3409840B1/de
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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
    • E02F3/3627—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
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle

Definitions

  • the present invention relates to a quick coupler.
  • the present invention refers to a quick coupler that can be used for connecting a tool to a mechanical arm of a heavy-duty machine.
  • the present invention refers to a quick coupler that can be used for connecting a tool to a mechanical arm of a heavy-duty machine and is provided with a rotatable actuation device.
  • Such devices are disclosed in documents EP2832931 , EP3141662 , EP2910688 .
  • each adapter member has a boxlike seat, which is laterally delimited by respective parallel sides that are prearranged for coupling with the tool and is longitudinally delimited by a pair of shafts, which are at times built in a substantially identical way but arranged symmetrically with respect to a transverse median plane of the adapter member so that the latter can be used in a reversible way to enable use of the respective tool with two opposite orientations.
  • the quick coupler comprises a frame having a pair of sides that define an engagement portion shaped like a fork prearranged for coupling with any one of the shafts.
  • the quick coupler further comprises at least one elongated member carried centrally and mobile between an operatively neutral retracted position and an advanced position of interference with the bottom portion of the other shaft of the adapter member in such a way as to stabilise connection between the quick coupler and the adapter member, and hence between the mechanical arm and the tool that is to be used.
  • a quick coupler of a mechanical type the frame of which carries two elongated members set alongside one another, prearranged for interacting with the respective shaft of the adapter member through a moving element that moves longitudinally against the thrust of a spring for each elongated member.
  • the axial position of the elongated members with respect to the frame of the quick coupler, and hence with respect to the shafts of the adapter member, is controlled by an actuation mechanism provided with an internal cam, rotatably carried by the frame of the quick coupler, and with a roller cam-follower, which internally engages the cam and is associated to the moving element.
  • the longitudinal position of the elongated members with respect to the frame of the quick coupler is hence controlled through the cam, which has a cusp portion that connects a concave portion and a convex portion, and is distinct from the latter by a step-like blocking element, for identifying a parking seat for the cam-follower, operatively corresponding to which is a retracted position of the moving element and a retracted position of the elongated members, which are operatively neutral.
  • the blocking element of the cam-follower is switched into a position of non-interference with the step-like blocking element, the springs are released from the cam and free to move the moving element into the operatively active advanced position, suited for interfering with the shaft set at the front.
  • the cam has a plurality of housings provided in the respective concave portion, where each housing is shaped for receiving the roller of the cam-follower in such a way as to counter accidental retraction of the moving element (due to application of excessive stresses on the tool, which have repercussions on the shaft of the adapter member engaged by the elongated members that are associated to the moving element, or consequent upon yielding of at least one of the springs that are coupled to the elongated members) and so as to keep the moving element with the elongated members extracted by a given amount with respect to the frame.
  • the roller is free to turn about its own axis, and hence, in the presence of high speeds of exit of the elongated members, the roller can roll on the surface of at least one housing before being restrained in one of the adjacent housings.
  • the presence of more than one housing has precisely the purpose of increasing safety of the actuation device, which otherwise might not be able to oppose an action that causes retraction of the elongated members, thus causing accidental detachment of the adapter member and hence of the tool.
  • the housings occupy a considerable radial dimension of the concave portion of the inner profile of the cam, so that the degree of adjustment of the position of the cam-follower and of the amount of extraction of the elongated members is modest, with the result that the solution described can be decidedly improved from the standpoint of safety.
  • a possible solution could be to reduce the transverse dimension of the roller cam-follower in order to lengthen the path that the roller should cover to exhaust the energy applied to the elongated members that brings about retraction of the latter, but this solution would reduce the shear strength of the cam-follower and hence risks jeopardising the sturdiness of the quick coupler, rendering use thereof highly risky for operators.
  • the present invention relates to a quick coupler.
  • the present invention refers to a quick coupler that can be used for connecting a tool to a mechanical arm of a heavy-duty machine.
  • the present invention refers to a quick coupler that can be used for connecting a tool to a mechanical arm of a heavy-duty machine and is provided with a rotatable actuation device.
  • the aim of the present invention is to provide an actuation device for a quick coupler that will enable fine adjustment of the position of the respective elongated members and will make it possible to exert an effective action of control of said position with respect to the corresponding frame, to the advantage of operating safety, in a simple and economically advantageous way.
  • an actuation device for a quick coupler is provided, the main characteristics of which will be described in at least one of the ensuing claims.
  • a further aim of the present invention is to provide a quick coupler equipped with an actuation device that will enable fine adjustment of the position of the respective elongated members and will make it possible to exert an effective action of control of said position with respect to the corresponding frame, to the advantage of operating safety, in a simple and economically advantageous which.
  • the quick coupler 100 prearranged for coupling to an adapter member 200 of a tool for a mechanical arm of a heavy-duty machine, without this implying any limitation of the scope of the present invention.
  • the quick coupler 100 has a frame 102, which comprises two first parallel sides 104 (of which just one is visible in Figure 2 ) connected by a plate 106 and, at the front (on the left in Figure 2 ), by a first block (known and not illustrated) set between two hook-shaped seats 107 (of which just one is visible in Figure 2 ).
  • Each seat 107 is provided at the front on a respective side 104 for housing a shaft 206 of the adapter member 200, which will be described more fully hereinafter.
  • the quick coupler 100 has, at the rear (on the right in Figure 2 ), a block 109 set between the sides 104 and, at the centre, a moving element 108, which is mobile in a longitudinal direction D of the quick coupler 100 itself.
  • the moving element 108 carries at least one elongated member 110, which, together with the moving element 108 itself, can be driven with reciprocating motion against the thrust of a spring 111 between a retracted position P1 (i.e., a position retracted with respect to the frame 102) and an advanced position P2 (once again with respect to the frame 102) in the direction D of engagement of the shaft 206.
  • Each elongated member 110 is axially delimited by a wedge-shaped free end 1100 on the side opposite to that of the moving element 108, and the block 109 has a guide hole 1090 for each elongated member 110.
  • the position P1 is visible only in Figure 6
  • the position P2 is visible in Figures 8 , 10, and 11 , and will be discussed more fully hereinafter.
  • the quick coupler 100 further comprises an actuation device 112 prearranged for switching each elongated member 110 between the retracted position P1 and the advanced position P2.
  • the actuation device 112 comprises an annular cam 1120, which is carried by the frame 102 in such a way that it is able to rotate about a fulcrum axis 103 by means of a pivot 1030, which in turn is set transverse to the plate 106.
  • the cam 1120 has a slot 1122 shaped like a cashew nut in top plan view.
  • the cam 1120 has a concave portion 1121 and a convex portion 1123 facing one another and connected by a slightly curved stretch 1125.
  • the slot 1122 has a radiusing portion 1127 between the concave portion 1121 and the convex portion 1123, on the side opposite to the stretch 1125, which terminates with a step 1129 on the side of the convex portion 1123, the function of which will be explained more fully hereinafter.
  • the cam 1120 is delimited by an active stretch 11201.
  • the actuation device 112 has a spring 11202, which connects the frame 102 on the left of the axis 103 with the radiusing portion 1127 to counter clockwise rotation of the cam 1120.
  • the slot 1122 is delimited by an annular surface 1124 parallel to the axis 103, and the actuation device 112 comprises a cam-follower 1126 carried by the moving element 108 inside the slot 1122.
  • the cam-follower 1126 is provided with a roller 11262, with its rolling surface facing the surface 1124.
  • the actuation device 112 comprises an arrest gear pair 114, the function of which is to block any accidental longitudinal recession of the ensemble comprising the moving element 108 and the elongated members 110 (from the advanced position P2 to the retracted position P1), and rotation of the cam 1120, following upon an anomalous action exerted on the elongated members 110 that, in use, tends to cause displacement of said members from the position P2 to the position P1.
  • the arrest gear pair 114 comprises a C-shaped member 1141, which is fixedly coupled to the convex portion 1123 of the cam 1120, hence on the same side as the moving element 108.
  • the C-shaped member 1141 is splined on the pivot 1030 in a position underlying the roller 11262, and has a toothed portion 11420, provided with a plurality of teeth 114200 ( Figure 4 ).
  • the cam-follower 1126 comprises the pin 11260, carrying the coaxial roller 11262, with axis parallel to the fulcrum axis 103, which faces the surface 1124.
  • the arrest gear pair 114 further comprises at least one toothed sector 1140, which projects from a lowered cylindrical member 1142, the longitudinal extension of which approximates the longitudinal extension of the roller 11262, and is carried by the pin 11260 in an angularly fixed way in a position facing the toothed portion 11420 and underneath said roller 11262.
  • the sector 1140 has a plurality of teeth 11400, each of which develops substantially in the direction D and is shaped and proportioned like the teeth 114200.
  • each tooth 11400 is rigidly carried by the pin 11260 so that it partially overlaps the roller 11262 in the longitudinal direction.
  • the toothed portion 11420 has an angular extension of at least 10° so as to present, in use, at least one respective tooth 114200 positioned in such a way as to enable selective meshing with at least one tooth 11400 when the cam 1120 is in any one of the angular positions comprised between the position P1 and the position P2.
  • the actuation device 112 comprises a feeler member 40, which is carried by the block 109 in a position eccentric with respect to the axis 103. It should be pointed out that said feeler member 40 has a head 42 visible in Figures 6, 7 , 9, and 10 , the function of which is to interact like a cam-follower with the stretch 11201 of the outer profile of the cam 1120. Consequently, the feeler member 40 is carried by the block 109 in an axially free way and is constrained so as to assume an axial position uniquely determined by the angular position of the cam 1120.
  • the adapter member 200 has a housing 202 for the quick coupler 100, where the housing 202 is delimited by two second sides 204 connected by a plate 208 and by a pair of shafts 206. Said shafts 206 are carried between the two sides 204 above the elongated members 110 and extend, in use, transverse to the direction D so that they can be engaged by each elongated member 110 underneath.
  • the shafts 206 both have an inclined face 206' facing upwards in a symmetrical way to render the adapter member reversible.
  • the block 109 of the quick coupler 100 has a face 1092 inclined downwards prearranged for interacting with any one of said faces 206' for gripping like a vice a corresponding shaft 206, together with the free ends 1100 of the elongated members 110.
  • the actuation device 112 has been designed in such a way that it can be actuated mechanically, without this implying any limitation of the scope of the present invention.
  • the actuation device 112 comprises a crank 112' splined on the pivot 1030 prearranged for turning the pivot 1030 about the axis 103.
  • rotation of said pivot 1030 could be governed by an electric motor (known and not illustrated) carried by the quick coupler above a lid 106', with its own drive shaft mechanically coupled to the head of the pivot 1030 in a way known and not illustrated.
  • the actuation device 112 is set with the moving element 108, and hence with the elongated members 110, in a position P1. This position is longitudinally retracted with respect to the frame 102 and is hence operatively neutral, given that the ends 1100 of the two elongated members 110 are detached from the shaft 206 facing them.
  • the function of the spring 11202 is to limit the movement of retraction of the elongated members 110, so as to set an arc of teeth 114200 of a given angular extension facing the teeth 11400 of the sector 1140 in such a way that, in the case of retraction of the moving element 109/elongated members 110, the probability of stable meshing between the teeth 114200 and the teeth 11400 will be maximum. It should be pointed out that, in the absence of the spring 11202, in the case where the elongated members 110 were to undergo a displacement/recession from the position of interference with the shaft 206 of the adapter member 200, the cam 1120 would be free to turn about its own axis 103.
  • the cam 1120 houses the roller 11262 in its own radiusing portion 1127, to the left of the step 1129, and the feeler member 40, the head 42 of which interacts with the stretch 11201, is pushed downwards by said stretch and kept in its own position further extracted from the block 109.
  • the position of the roller 11262 is meta-stable but will remain unchanged until the feeler member 40 is pushed by the shaft 206 towards the seats 107 and hence imposes a counter clockwise rotation on the cam 1120 with a force that overcomes the resistance of the springs 111.
  • This rotation has the effect of rotating the cam 1120 and of bringing the step 1129 to the left of the axis 103.
  • the springs 111 will be released from the cam 1120 and will control displacement of the block 108, and of the elongated members 111, on the side opposite to the seats 107 until the configuration of Figure 8 is reached, where the roller 11262 is in contact with the convex portion 1123 on the side of the stretch 1125.
  • This configuration may evolve freely into the configuration of Figure 9 in the presence of external actions exerted on the elongated members 110 that tend to bring the respective ends 1100 back into the block 109.
  • the combined presence of the toothed portion 11420, which is associated to the concave portion 1121 of the cam 1120, and of the teeth 11400 of the sector 1140, which is associated to the pin 11260 will prevent an excessive detachment D of the face 1092 of the block 109 ( Figure 11 ) from the corresponding shaft 206, as well as consequent entry of the respective ends 1100 back into the block 109, and, in operating conditions in which said ends 1100 interact with the bottom portion of the corresponding shaft 206, detachment of the quick coupler 100 from the adapter member 200.
  • the actuation device 112 and the quick coupler 100 that incorporates it enable the elongated members 110 to be kept in contact with the respective shaft 206 even in the presence of longitudinal displacements imposed on said members that have an extension less than the radial extension of the teeth 11400 of the sector 1140, thus keeping the adapter 200 coupled to the quick coupler 100 to the advantage of operating safety of the quick coupler 100 itself.

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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)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Transmission Devices (AREA)

Claims (8)

  1. Eine Betätigungsvorrichtung (112) für einen Schnellkuppler (100), der zum Kuppeln mit einem Adapterbauteil (200) eines Werkzeugs für einen mechanischen Arm bestimmt ist; wobei der Schnellkuppler (100) Folgendes aufweist: einen Rahmen (102), der zwei erste parallele Seiten (104) beinhaltet, die durch eine erste Platte (106) verbunden sind; und ein bewegliches Element (108), das mit mindestens einem in eine Richtung (D) verlängerten Bauteil (110) versehen ist, das mit Hin- und Herbewegung gegen den Druck einer Feder (111) zwischen einer eingezogenen Position (P1) und einer ausgefahrenen Position (P2) zum Eingriff in das Adapterbauteil (200) mobil ist; wobei die Betätigungsvorrichtung (112) bereitgestellt ist, um jedes verlängerte Bauteil (110) zwischen der eingezogenen Position (P1) und der ausgefahrenen Position (P2) zu verstellen; wobei die Betätigungsvorrichtung (112) einen durch den Rahmen (102) getragenen ringförmigen Nocken (1120) beinhaltet, der fähig ist, sich um eine Drehachse (103) transversal zu der ersten Platte (106) zu drehen; wobei die Betätigungsvorrichtung (112) ein Eingriffsglied (1126) transversal zu der ersten Platte (106) beinhaltet, das durch das bewegliche Element (108) innerhalb des Nockens (1120) getragen wird; wobei das Eingriffsglied (1126) einen Stift (11260) mit einer zu der Drehachse (103) parallelen Achse beinhaltet, der eine koaxiale Rolle (11262) trägt, die dem Nocken (1120) gegenüberliegt; wobei die Betätigungsvorrichtung (112) verzahnte Arretierungsmittel (114) zum Blockieren, mit Bezug auf den Rahmen (102), jedes verlängerten Elements (110) in Längsrichtung und des Nockens (1120) in einem Winkel beinhaltet; wobei die Betätigungsvorrichtung (112) dadurch gekennzeichnet ist, dass die Arretierungsmittel (114) ein mit einem verzahnten Abschnitt (11420) versehenes C-förmiges Bauteil (1142) beinhalten, das mit dem Nocken (1120) auf derselben Seite wie das bewegliche Element (108) in einer unter der Rolle (11262) gelegenen Position fest gekuppelt ist; und dadurch, dass die Arretierungsmittel (114) mindestens ein verzahntes Element (1140) (11400) beinhalten, das von dem Stift (11260) getragen wird, dem verzahnten Abschnitt (11420) gegenüberliegt und sich im Wesentlichen in die Richtung (D) entfaltet.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass sich der verzahnte Abschnitt (11420) zum selektiven Passeingriff in jedes verzahnte Element (1140) über mindestens 10° erstreckt.
  3. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass sich jedes verzahnte Element (1140) radial von einem zylindrischen Bauteil (1142) erstreckt, das winkelfest von dem Stift (11260) unter der Rolle (11262) getragen wird.
  4. Vorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, dass jedes verzahnte Element (1140) (11400) von dem Stift (11260) starr getragen wird, sodass es die Rolle (11262) in Längsrichtung teilweise überlappt.
  5. Vorrichtung gemäß einem der Ansprüche 1-4, dadurch gekennzeichnet, dass die Betätigungsvorrichtung (112) ein mechanisches Element (112') beinhaltet, das zum Drehen des Nockens (1120) um die Achse (103) bestimmt ist.
  6. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass das mechanische Element (112') eine Kurbel (112') beinhaltet, die auf einem Drehgelenk (1030) verkeilt ist, das die Achse (103) teilt.
  7. Ein Schnellkuppler (100), der zum Kuppeln mit einem Adapterbauteil (200) eines Werkzeugs für einen mechanischen Arm (M) bestimmt ist, dadurch gekennzeichnet, dass er eine Betätigungsvorrichtung (112) gemäß einem der Ansprüche 1-6 beinhaltet.
  8. Eine Kombination, die ein Adapterbauteil (200) und einen Schnellkuppler (100) gemäß Anspruch 7 umfasst, dadurch gekennzeichnet, dass das Adapterbauteil (200) ein Gehäuse (202) für den Schnellkuppler (100) aufweist, wobei das Gehäuse (202) durch zwei zweite Seiten (204) begrenzt ist, die durch eine zweite Platte (204) und durch ein Paar Schäfte (206) verbunden sind, die zwischen den zwei der Seiten (202) über den verlängerten Bauteilen (110) angeordnet sind und sich bei Verwendung transversal zu der gegebenen Richtung (D) erstrecken, sodass sie durch jedes verlängerte Bauteil (110) in Eingriff gebracht werden können.
EP18175224.7A 2017-05-31 2018-05-30 Betätigungsvorrichtung Active EP3409840B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000059602A IT201700059602A1 (it) 2017-05-31 2017-05-31 Dispositivo di accoppiamento

Publications (2)

Publication Number Publication Date
EP3409840A1 EP3409840A1 (de) 2018-12-05
EP3409840B1 true EP3409840B1 (de) 2024-02-21

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EP (1) EP3409840B1 (de)
ES (1) ES2985136T3 (de)
IT (1) IT201700059602A1 (de)
PL (1) PL3409840T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024124840B3 (de) * 2024-08-30 2025-10-09 Béla Cseri Besitzunternehmung GbR (vertretungsberechtigter Gesellschafter: Béla Cseri, 89129 Langenau) Schnellwechselvorrichtung umfassend ein Gehäuse mit einer Sicherungsvorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100031157A1 (it) * 2021-12-13 2023-06-13 Simex Srl Attacco rapido per la connessione reversibile di un utensile ad un braccio di movimentazione, particolarmente per macchine di movimento terra e simili e gruppo benna comprendente tale attacco rapido

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20130410A1 (it) * 2013-07-29 2015-01-30 Cangini Benne Srl Dispositivo di connessione di un utensile ad un braccio di azionamento
EP2910688A1 (de) * 2014-02-24 2015-08-26 Cangini Benne S.R.L. Verriegelungs- und freisetzungssystem
ITUB20152632A1 (it) * 2015-07-30 2017-01-30 Cangini Benne Srl Dispositivo di aggancio rapido sensorizzato

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024124840B3 (de) * 2024-08-30 2025-10-09 Béla Cseri Besitzunternehmung GbR (vertretungsberechtigter Gesellschafter: Béla Cseri, 89129 Langenau) Schnellwechselvorrichtung umfassend ein Gehäuse mit einer Sicherungsvorrichtung
EP4703521A1 (de) 2024-08-30 2026-03-04 Béla Cseri Besitzunternehmung GbR Schnellwechselvorrichtung umfassend ein gehäuse mit einer sicherungsvorrichtung

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EP3409840A1 (de) 2018-12-05
ES2985136T3 (es) 2024-11-04
PL3409840T3 (pl) 2024-06-10
IT201700059602A1 (it) 2018-12-01

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