EP2935704A1 - Attelage - Google Patents
AttelageInfo
- Publication number
- EP2935704A1 EP2935704A1 EP13864674.0A EP13864674A EP2935704A1 EP 2935704 A1 EP2935704 A1 EP 2935704A1 EP 13864674 A EP13864674 A EP 13864674A EP 2935704 A1 EP2935704 A1 EP 2935704A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking member
- coupler
- lock actuator
- coupler assembly
- actuator
- 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.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 241001236644 Lavinia Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
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
- E02F3/3618—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
- E02F3/3622—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 locking element acting on a pin
-
- 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
- E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part
-
- 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
- E02F3/365—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with redundant latching means, e.g. for safety purposes
-
- 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
- E02F3/3659—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat electrically-operated
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49815—Disassembling
- Y10T29/49822—Disassembling by applying force
- Y10T29/49824—Disassembling by applying force to elastically deform work part or connector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32254—Lockable at fixed position
- Y10T403/32262—At selected angle
- Y10T403/32319—At selected angle including pivot stud
Definitions
- This invention relates to a coupler, and in particular, but not exclusively to a coupler for attaching work implements to the arm or boom of an excavator or similar vehicle.
- Couplers are often used to connect work attachments or implements to the booms of excavators, diggers, back hoes, etc.
- the couplers are sometimes also referred to as "quick hitches", or “pin grabber” couplers as they grab the two connecting pins that are attached to many attachments for the purpose of connecting the attachment to an arm.
- the couplers allow implements to be changed quickly and efficiently by being able to release the connecting pins of one implement, and to grab the connecting pins of another, using remotely controlled hydraulic actuators on the coupler.
- the invention may broadly be said to consist in a coupler assembly for coupling implements having a first connecting pin and a second connecting pin, to a vehicle, the coupler having;
- a body component that is connectable to the vehicle, and which includes a forward recess for receiving the first connecting pin
- a movable component which is supported by the body component and which is movable through a range of travel relative to the body component, and which includes, or forms a part of, an af recess for receiving the second connecting pin, and,
- a movable component actuator for selectively moving the movable component relative to the body component
- a rear locking member which is a part of the movable component and wliich is movable relative to the movable component between an extended position in which the rear locking member prevents the second connecting pin from exiting the aft recess and a retracted position in which the rear locking member does not prevent the second connecting pin exiting the aft recess,
- a connection between the rear lock actuator and the rear locking member includes a link member.
- rear locking member and the link member are configured in such a manner that;
- a second and further range of movement of the link member positions a stop member which prevents movement of the rear locking member away from its extended position.
- the stop member is a part of the link member.
- the rear lock actuator is mounted on the movable component.
- the movable component slides relative to the body component.
- the link member slides relative to the movable component.
- the rear locking member is pivotally connected to the movable component.
- the coupler further includes a forward locldng member which is movable relative to the body component between an extended position in which the forward locking member prevents the first connecting pin from exitmg the forward recess and a retracted position in which the forward locldng member does not prevent the first connecting pin exiting the forward recess.
- a forward locldng member which is movable relative to the body component between an extended position in which the forward locking member prevents the first connecting pin from exitmg the forward recess and a retracted position in which the forward locldng member does not prevent the first connecting pin exiting the forward recess.
- the coupler includes a forward lock actuator for moving the forward locking member between its extended and retracted positions.
- the forward lock actuator is pivotally connected to a hydraulic manifold of the coupler assembly.
- pivotal connection between the forward lock actuator and the hydraulic manifold is configured to provide a hydraulic fluid flow path between the hydraulic manifold and the forward lock actuator.
- the movable component actuator, the rear lock actuator and the forward lock actuator are all hydraulic actuators.
- a hydraulic system of the coupler includes sequence valves to control the sequence of operation of the movable component actuator, the rear lock actuator and the forward lock actuator during any engagement and/or disengagement processes.
- the invention may broadly be said to consist in a coupler assembly for coupling implements having a first connecting pin and a second connecting pin, to a vehicle, the coupler assembly having;
- a hydraulic system including at least one actuator configured to enable the coupler assembly to positively engage with the first and second connecting pins of an implement, and
- the hydraulic system also including at least one hydraulic manifold block;
- the coupler assembly also includes a hydraulic forward lock actuator which is supported on, and receives a hydraulic supply from, the hydraulic manifold block.
- forward lock actuator is pivotally connected to the hydraulic manifold block.
- the hydraulic supply from the hydraulic manifold block to the forward lock actuator passes through the pivotal connection between the forward lock actuator and the hydraulic manifold block.
- the forward lock actuator is a single acting actuator with a spring return mechanism.
- the invention may broadly be said to consist in a vehicle incoiporating at least one coupler substantially as specified herein.
- the vehicle is an excavator.
- the invention may broadly be said to consist in a method of disengaging a work attachment or implement from a coupler having a body and a movable component, including the steps of; operating a forward lock actuator to move a forward locking member from an extended position to a retracted position, operating a rear lock actuator to move a rear locking member from an extended position to a retracted position, and when the rear locking member is in its retracted position, operating a movable component actuator to move a movable component out of engagement with a real' pin of the work attachment, and then disengaging a forward pin of the work attachment from the body.
- the method of disengaging includes an automatic operation of the forward lock actuator to move the forward locking member from the retracted position to the extended position a pre-determined time period after the operation of the forward lock actuator, the rear lock actuator or the movable component actuator to disengage the coupler from an implement.
- the invention may also broadly be said to consist in the parts, elements and features referred to or indicated in the specification of the application, individually or collectively, and any or all combinations of any two or more of the parts, elements or features, and where specific integers are mentioned herein which have known equivalents, such equivalents are incorporated herein as if they were individually set forth.
- FIGURE 1 is an exploded perspective view of a first example of a coupler according to the present invention
- FIGURE 2 is a cutaway perspective view of the first example of a coupler
- FIGURE 3 is a cutaway perspective view of a slide assembly of the first example of a coupler
- FIGURE 4 is a perspective view of a slide component of the slide assembly
- FIGURE 5 is a perspective view of a forward locking member of the first example of a coupler
- FIGURE 6 is a perspective view of a rear locking member of the slide assembly
- FIGURE 7 is a perspective view of a link member of the slide assembly
- FIGURE 8 is a perspective view of a slide assembly actuator of the first example of a coupler
- FIGURE 9 is a right side elevation view of the first example of a coupler
- FIGURE 10 is a cutaway side elevation view of the first example of a coupler
- FIGURE 11 is a perspective view of a rear lock actuator of the first example of a coupler
- FIGURE 12 is a cutaway side elevation view of the coupler showing a first stage of a coupling sequence
- FIGURE 13 is a cutaway side elevation view of the coupler showing a second stage of a coupling sequence
- FIGURE 14 is a cutaway side elevation view of the coupler showing a third stage of a coupling sequence
- FIGURE 15 is a cutaway side elevation view of the coupler showing a fourth stage of a coupling sequence
- FIGURE 16 is a cutaway side elevation view of the coupler showing a first stage of an uncoupling sequence
- FIGURE 17 is a cutaway side elevation view of the coupler showing a second stage of an uncoupling sequence
- FIGURE 18 is a cutaway side elevation view of the coupler showing a third stage of an uncoupling sequence
- FIGURE 19 is a cutaway side elevation view of the coupler showing a fourth stage of an uncoupling sequence
- FIGURE 20 is a cutaway side elevation view of the coupler showing a fifth stage of an uncoupling sequence
- FIGURE 21 is a schematic diagram of a hydraulic circuit which includes components of the coupler as well as hydraulic components of a vehicle, to which the coupler is attached,
- FIGURE 22 is an electrical diagram used to control the operation of the coupler
- FIGURE 23 is a partially cutaway side elevation view of a second example of a coupler according to the present invention, showing a forward locking member of the coupler in an extended configuration
- FIGURE 24 is a partially cutaway side elevation view of the second example of a coupler showing the forward locking member in a retracted configuration
- FIGURE 25 is a partially cutaway perspective view of the second example of a coupler which defines an exploded view A
- FIGURE 26 is the exploded view A which shows the hydraulic supply routing to a forward lock actuator which controls the positioning of the forward locking member.
- a first example of a coupler assembly (31) is shown in an exploded perspective view and in a series of perspective and cutaway views. Included also are hydraulic and electrical circuits used to control the operation of the coupler assembly (31).
- the coupler assembly (31) is of the type typically used for coupling implements having a first connecting pin and a second connecting pin, to a vehicle such as an excavator or a back hoe.
- the coupler assembly (31) has a body component (33) that is connectable to the vehicle.
- the body component (33) itself includes two coupler mounting pins (35) winch are used to connect the coupler assembly (31) to the end of an arm of the vehicle.
- the body component (33) also includes a forward recess (37) for receiving the fust connecting pin of an implement.
- the coupler assembly (31) also includes a movable component or slide assembly (39) which is supported by the body component (33).
- the slide assembly (39) is movable through a range of travel relative to the body component (33).
- the range of travel of the slide assembly (39) is substantially in a fore and aft direction relative to the body (33).
- the slide assembly (39) includes, or at least forms a part of, an aft recess (41) for receiving the second connecting pin of an implement.
- a movable component actuator or slide assembly actuator (43) of the coupler assembly (31) is used to selectively move the slide assembly (39) relative to the body component (33).
- a slide component ⁇ (45) ofthe slide assembly (39) includes elongate tabs (47), These elongate tabs (47) engage with corresponding slots (49) on the body component (33), allowing the slide assembly (39) to slide in a fore and aft direction relative to the body component (33).
- the slide assembly (39) includes a rear locking member (51).
- the rear locking member (51) is movable relative to the slide assembly (39), between an extended position in which the rear locldng member (51) prevents the second connecting pin from exiting the aft recess (41) and a retracted position in which the rear locking member (51) does not prevent the second connecting pin exiting the aft recess (41).
- the slide assembly (39) also includes a rear lock actuator (53) (refer Figures 2, 3 and 11) for moving the rear locking member (51) between its extended and retracted positions.
- the rear lock actuator (53) is mounted on the slide assembly (39), and moves with the slide assembly (39).
- the rear lock actuator (53) includes a rear lock actuator spring (54) which biases the actuator toward an extended configuration in which the rear lock actuator (53) pushes the rear locking member (51) to its extended position.
- a feature of the coupler assembly (31) is the connection between the rear lock actuator (53) and the rear locking member (51).
- the connection includes a link member (55).
- the rear locking member (51) is pivotally connected to the slide component (45) by a rear lock connecting pin (57).
- the link member (55) slides fore and aft relative to the slide assembly (39) under the influence of the rear lock actuator (53).
- the rear locking member (51) and the link member (55) are configured in such a manner that an initial range of movement of the link member (55) pushes the rear locking member (51) from its retracted position to its extended position. And a second and further range of movement of the link member (55) positions a stop member (59) which prevents movement of the rear locking member (51) away from its extended position.
- the stop member (59) is a part of the link member (55).
- the link member (55) is in the form of a substantially rectangular shaped plate (61), having tabs (63) extending from the plate (61) for connection to the rear lock actuator (53).
- the plate (61) includes a rectangular shaped hole (65) positioned substantially centrally within the principal plane of the plate (61 ).
- the link member (55) comprises a ' forward transverse member (67), and aft transverse member (69), and side plates (71), one on the left side and one on the right side of the link member (55).
- the side plates (71) each span between the outermost extremities of the forward and aft transverse members (67) and (69).
- the side plates (71) of the link member (55) engage with, and slide within, slide grooves (73) on each side of the slide assembly (39).
- the rear locking member (51) includes an upwardly protruding control tab (75), and two rearwardly extending locking tabs (77).
- the two rearwardly extending locking tabs (77) each include a locking surface (79).
- the locking surfaces (79) are situated on an upper part of each locking tab (77) and are substantially aligned with a lower edge (81) of the slide grooves (73) when the rear locking member (51) is in its fully extended position.
- the link member (55) When the slide assembly (39) is assembled, the link member (55) is held within the slide grooves (73). And when the rear locking member (51) is in its fully extended position, the control tab (75) of the rear locking member (51) is situated within the rectangular hole (65) in the link member (55).
- the rectangular hole (65) is of sufficient size to allow a range of movement of the link member (55) relative to the rear locking member (51) without contact being made between the link member (55) and the rear locking member (51). However, movement of the link member beyond this range of movement does result in contact between the link member (55) and the rear locking member (51). And this contact is used to move the rear locking member (51) between its retracted position and its extended position as will be explained below.
- Movement of the rear locking member (51) from its retracted position to its extended position is achieved as follows.
- the link member (55) is moved from its forward most position, and in an aft direction, by the rear lock actuator (53).
- an aft edge (83) of the side plates (71) contacts a forward edge (85) of the locking tabs (77). This contact causes rotation of the rear locking member (51) about the rear lock connecting pin (57), and rotation of the rear locking member (51) to its fully extended position.
- the continued movement positions the side plates (71) of the link member (55) over the locking surfaces (79) of the rear locking member (51).
- the rectangular hole (65) in the link member (55) is configured to allow continued aft movement of the link member (55) even though the control tab (75) is now situated within the rectangular hole (65).
- the slide assembly (39) is configured such that the locking surfaces (79) are immediately adjacent the side plates (71) when the link member (55) is fully aft. In this way, the side plates (71) act as stops preventing movement of the rear locking member (51) away from its fully extended position.
- Movement of the rear locking member (51) from its extended position to its retracted position is achieved as follows.
- the link member (55) is moved forward by the rear lock actuator (53).
- An initial range of forward movement of the link member (55) moves the side plates (71) away from their location above the locking surfaces (79). This unlocks the rear locking member (51) allowing it to be moved to its retracted position.
- a second range of forward movement of the link member (55) initially brings a forward edge (87) of the rear transverse member (69) into contact with a rear surface (89) of the control tab (75).
- the coupler assembly (31) further includes a forwai'd locking member (91).
- the forward locking member (91) is movable relative to the body component (33) between an extended position, in which the forward locking member (91) prevents the first connecting pin from exiting the forward recess (37), and a retracted position, in which the forward locking member does not prevent the first connecting pin exiting the forward recess (37).
- the coupler assembly (31) also includes a forward lock actuator (93) for moving the forward locking member (91) between its extended and retracted positions.
- the coupler assembly (31) is used with a hydraulic control system (111) and an electrical control circuit (113) as shown in Figures 21 and 22 respectively.
- the electrical control circuit (113) includes two manually controlled switches and a timer, and the hydraulic control system (111) includes solenoid operated control valves and sequence valves, to control the sequence of operation of the slide assembly actuator (43), the rear lock actuator (53) and the forward lock actuator (93), during any engagement and/or disengagement processes,
- the design of the hydraulic control system (111) allows the coupler assembly (31) to be controlled using only two hydraulic lines.
- the electrical control circuit (113) has a master switch (115) which is used to supply or disconnect electrical power to the control circuit.
- a master switch (115) which is used to supply or disconnect electrical power to the control circuit.
- an alarm (117) sounds and optionally a warning light operates also. This warns personal in the vicinity of the vehicle that the coupler (31) will be operated to release and/or engage implements from the aim of the vehicle.
- a second switch (119) is a 'hold to run' style of switch, meaning that the contacts of the switch are only engaged while the operator continues to hold the switch down.
- a second alarm (121) and warning light operates, and power is supplied to a first solenoid operated valve (123) of the hydraulic control system (111).
- a timer (125) is also initiated, which in turn provides power to a second solenoid operated valve (127) via a timer relay (128), after a pre-determined time period, for -example, ajime period in the range of three to eight seconds.
- the first and second solenoid operated valves (123) and (127) of the hydraulic control system (111) are situated on the vehicle along with a pressure regulating valve (129) for regulating the hydraulic pressure to a set value and minimising pressure spikes.
- the first solenoid operated valve (123) is used to initiate the disengage or engage signals to the coupler (31).
- the second solenoid operated valve (127) controls the draining of hydraulic fluid from the forward lock actuator (93) after the pre-determined time delay period to allow a forward lock actuator spring (99) within the forward lock actuator (93) to move the forward locking member (91) backs to its extended position.
- the coupler assembly (31) itself includes a first sequence valve (135) which controls the sequencing of the three actuators and ensures that the rear lock actuator (53) and the forward lock actuator (93) operate to retract their respective locking members (51) and (91) prior to the retraction of the slide assembly actuator (43) to move the slide assembly (39) forward.
- a first pressure operated check valve (137) and a second pressure operated check valve (139) act as safety locks to lock the position of the slide assembly actuator (43) in case of a hydraulic failure.
- the locked slide assembly actuator (43) holds the slide assembly (39) fixed preventing the pins of an implement from exiting the forward and aft recess (37) and (41) of the coupler (31).
- a second sequence valve (141) controls the sequencing of the slide assembly actuator (43) and the rear lock actuator (53) to ensure that the rear lock actuator (43) moves the rear locking member (51) to its retracted position before the slide assembly actuator (43) begins to move the slide assembly (39) aft.
- a third pressure operated check valve (143) isolates the rear lock actuator (53) from the forward lock actuator (93) when fluid is drained from the forward lock actuator (93) by the second solenoid operated valve (127) as described above.
- the slide assembly actuator (43) is at least partly extended and is holding the slide assembly (39) in engagement with an aft connecting pin (95) of an implement.
- the rear lock actuator (53) is extended under hydraulic pressure and the rear locking member (51) is in its extended position and is able to prevent the aft connecting pin (95) from exiting the aft recess (41).
- the forward lock actuator is retracted under spring tension only and is holding the forward locking member (91) in its extended position and is able to prevent a forward connecting pin (97) from exiting the forward recess (37).
- the master switch (115) is switched on. Then the second switch (119), the 'hold to run switch' is depressed.
- the first solenoid operated valve (123) then operates to provide hydraulic pressure to the return line (133). Due to the configuration of the first sequence valve (135) the hydraulic pressure is initially directed to the rear lock actuator (53) and the forward lock actuator (93) to retract the rear and forward locking members (51) and (91) - refer to figure 16.
- Figure 20 shows the subsequent movement of the forward locking member (91) to its extended position after the time delay period.
- the second solenoid operated valve (127) operates to vent the fluid from the forward lock actuator (9T)7aflowlng a spr gl ⁇ ' wSian ⁇ e io eid lock actuator (93) to retract the actuator and move the forward locking member (91) to its extended position.
- the pressure operated check valves (137), (139) and (143) prevent any movement of fluid from the slide assembly actuator (43) and the rear lock actuator (53).
- This automatic resetting of the forward locldng member (91) to its extended position is a safety feature ensuring that the forward locldng member (91) is ready to hold and secure the forward connecting pin (97) of the next implement in the forward recess (37) as soon as the pick up or engagement procedure begins.
- the rear locking member (51) is retracted, and as noted above, the forward locking member (91) is extended and ready to hold and secure the forward connecting pin (97).
- the coupler assembly (31) is manipulated, for example using the arm of the excavator, to engage the forward connecting pin (97) of the next implement within the forward recess (37).
- the forward locking member (91) is configured so that it is pushed away from its extended position by the forward connecting pin (97) as it enters the forward recess (37) - refer to figure 12.
- the coupler assembly (31) is configured such that the spring (99) pushes the forward locking member (91) back to its extended position once the forward connecting pin (97) has passed fully into the forward recess (37) - refer to figure 13.
- a first locking feature is provided by the first and second pressure operated check valves (137) and (139) which hydraulically lock the slide assembly actuator (43) in the case of a hydraulic failure, for example a rupture of the supply or return lines (131) or (133).
- a second locking feature is provided by the forward locking member (91) which holds the forward connecting pin (97) within the forward recess (37).
- a third locking feature is provided by the rear locking member (51) which holds the aft connecting pin (95) within the aft recess (41).
- the coupler assembly (31) employs the following method of disengaging a work attachment or implement from the coupler assembly (31); the forward lock actuator (93) is operated to move the forward locking member (91) from its extended position to its retracted position, the rear lock actuator (53) is operated to move the rear locking member (51) from its extended position to its retracted position, and when the rear locking member (51) is in its retracted position, the slide assembly actuator (43) is operated to move the slide assembly (39) out of engagement with a rear pin (95) of the work attachment, and when the forward locking member (91) is retracted and the rear pin (95) is no longer engaged within the slide assembly (39), the forward pin (97) of the work attachment is disengaged from the body (33).
- the method of disengaging also includes an automatic operation of the forward lock actuator (93) to move the forward locking member (91) from the retracted position to the extended position a pre-detemiined time period after the operation of; the forward lock actuator (93), the rear lock actuator (53), or the slide assembly actuator (43), to disengage the coupler (31) from an implement.
- coupler assembly (161) With reference to Figures 23 to 26, a second example of a coupler assembly (161) will now be described.
- the operation of the coupler assembly (161) is similar to that of the first example of a coupler assembly (31), and the only significant difference between the first and second examples is the configuration of a forward locking assembly (163).
- a forward lock actuator (165) of the forward locking assembly (163) is pivotally connected at its aft end to a hydraulic manifold block (167) of the coupler assembly (161). In this way the forward lock actuator (165) is supported by the hydraulic manifold block (167).
- the hydraulic manifold block (167) routes fluid for a slide actuator (169) and a rear lock actuator (171), and also routes hydraulic fluid directly to the forward lock actuator (165).
- a pivot pin (173) connects an aft end of the forward lock actuator (165) to the hydraulic manifold block (167).
- a first passage (175) within the hydraulic manifold block (167) communicates with a second passage (177) within the pivot pin (173).
- the second passage (177) communicates with the hydraulic cylinder (179) of the forward lock actuator (165) via a third passageway (181) in an end fitting (183) of the forward lock actuator (165).
- the forward lock actuator (165) is a single acting actuator with a spring return mechanism. For this reason the forward lock actuator (165) only requires a single hydraulic supply.
- the slide assembly actuator, the rear lock actuator and the forward lock actuator are all hydraulic actuators.
- alternative actuators could be used, for example electrically operated linear actuators.
- At least the preferred form of the invention provides a coupler which provides a high level of safety.
- the rear locking member locks the aft connecting pin positively within the aft recess and the arrangement of the rear lock actuator and its connection to the rear locking member provides a positive and robust lock of the rear locking member in its extended position.
- the configuration of the locks is relatively simple and not excessively prone to interference from dirt or other foreign matter that may accumulate around the components.
- each actuator includes a biasing means in the form of a spring which biases each actuator toward a fail-safe configuration, that is, a configuration which retains the pins of the implements within the coupler.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17175927.7A EP3321427A1 (fr) | 2012-12-18 | 2013-12-11 | Attelage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ60485812 | 2012-12-18 | ||
PCT/NZ2013/000228 WO2014098616A1 (fr) | 2012-12-18 | 2013-12-11 | Attelage |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17175927.7A Division EP3321427A1 (fr) | 2012-12-18 | 2013-12-11 | Attelage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2935704A1 true EP2935704A1 (fr) | 2015-10-28 |
EP2935704A4 EP2935704A4 (fr) | 2016-08-31 |
Family
ID=50978782
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13864674.0A Withdrawn EP2935704A4 (fr) | 2012-12-18 | 2013-12-11 | Attelage |
EP17175927.7A Withdrawn EP3321427A1 (fr) | 2012-12-18 | 2013-12-11 | Attelage |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17175927.7A Withdrawn EP3321427A1 (fr) | 2012-12-18 | 2013-12-11 | Attelage |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150330053A1 (fr) |
EP (2) | EP2935704A4 (fr) |
KR (1) | KR20150123787A (fr) |
CN (1) | CN104937174A (fr) |
AU (1) | AU2013364566A1 (fr) |
CA (1) | CA2895410A1 (fr) |
WO (1) | WO2014098616A1 (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202014004430U1 (de) | 2013-05-31 | 2014-09-02 | Kinshofer Gmbh | Schnellkuppler |
GB201317354D0 (en) * | 2013-10-01 | 2013-11-13 | Oriel Flues Ltd | A coupler device |
JP6176666B2 (ja) * | 2014-04-08 | 2017-08-09 | キャタピラー エス エー アール エル | 作業機械におけるクイックカプラ用制御装置 |
AU2014203664B1 (en) * | 2014-07-03 | 2014-10-23 | Norm Engineering Pty Ltd | A coupler for coupling attachments to excavation machines |
CA2986389C (fr) * | 2015-06-04 | 2022-03-15 | Gerome Rangi HART | Dispositif d'accouplement |
DE102015015809A1 (de) * | 2015-12-07 | 2017-06-08 | Liebherr-Hydraulikbagger Gmbh | Ventileinheit für Schnellwechsler sowie Schnellwechselsystem |
GB2548401B (en) * | 2016-03-18 | 2018-06-06 | Caterpillar Work Tools Bv | Coupler for an implement assembly |
DE202016004202U1 (de) * | 2016-07-05 | 2017-10-06 | Kinshofer Gmbh | Schnellkuppler |
WO2018056841A1 (fr) * | 2016-09-20 | 2018-03-29 | Bruce Archibald Short | Raccord rapide d'attelage |
JP2018091091A (ja) * | 2016-12-06 | 2018-06-14 | 株式会社田口クリエイト | アタッチメント着脱装置 |
US11643787B2 (en) | 2017-08-04 | 2023-05-09 | Wedgelock Equipment Limited | Quick coupler |
KR102105629B1 (ko) * | 2018-05-28 | 2020-05-26 | 강토중공업 (주) | 퀵 커플러 |
GB2576486B (en) * | 2018-06-25 | 2023-05-10 | Miller Uk Ltd | Coupler |
EP3814578B1 (fr) * | 2018-06-27 | 2023-10-18 | Volvo Construction Equipment AB | Procédé et système pour gérer de manière sûre un raccord rapide d'outils dans un équipement de terrassement |
CN113557336B (zh) * | 2018-11-30 | 2023-10-24 | 休斯资产集团有限公司 | 联接器 |
EP3770330B1 (fr) * | 2019-07-25 | 2023-07-12 | Rädlinger Maschinen- und Stahlbau GmbH | Dispositif de changement rapide |
US11702816B2 (en) * | 2020-01-30 | 2023-07-18 | Wedgelock Equipment Limited | Quick coupler |
KR102213709B1 (ko) * | 2020-10-12 | 2021-02-08 | 황규관 | 고정후크 잠금 기능이 구비된 퀵 커플러 |
KR102192172B1 (ko) * | 2020-10-16 | 2020-12-16 | 유한회사 대한중공업 | 수동 가동후크 잠금 기능이 구비된 퀵 커플러 |
CN116491059A (zh) | 2020-11-04 | 2023-07-25 | 三美电机株式会社 | 光学元件驱动装置、摄像机模块及摄像机搭载装置 |
WO2022113510A1 (fr) | 2020-11-24 | 2022-06-02 | ミツミ電機株式会社 | Dispositif d'entraînement d'élément optique, module de caméra et dispositif équipé d'une caméra |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200167954Y1 (ko) * | 1999-08-30 | 2000-02-15 | 광림산기주식회사 | 굴삭기 어태치먼트 장착용 유압클램프 |
US7306395B2 (en) * | 2001-11-29 | 2007-12-11 | Jrb Attachments, Llc | Spread-style coupler with supplemental lock system |
FI20031751A0 (fi) * | 2003-11-28 | 2003-11-28 | Danisco | Menetelmä ruokavalmisteen stabiloimiseksi, kylmäemulgointiseos ja sen käyttö |
EP2450490B1 (fr) * | 2006-05-02 | 2018-04-04 | Kinshofer GmbH | Dispositif de verrouillage sécurisé pour un couplage rapide |
NZ550869A (en) * | 2006-10-26 | 2008-11-28 | J B Sales Internat Ltd | A coupler with latch for twin pin digger bucket |
US7648305B2 (en) * | 2007-02-08 | 2010-01-19 | Cws Industries (Mfg.) Corp. | Pin grabber coupler |
US7984575B2 (en) * | 2007-07-05 | 2011-07-26 | Caterpillar Inc. | Quick coupler assembly |
US20110308056A1 (en) * | 2008-11-03 | 2011-12-22 | Jeremy Glen Doherty | Improvements to work attachment assemblies |
CN102667005B (zh) * | 2009-09-22 | 2015-10-07 | 伊恩.希尔 | 带有用于将附件联接到工作机械上的销保持系统的液压联接器 |
US20110091267A1 (en) * | 2009-10-16 | 2011-04-21 | Ian Hill | Coupler |
AU2010328742B2 (en) * | 2009-12-09 | 2016-06-09 | Hughes Asset Group Pty Ltd | Improvements relating to couplers |
JP5416047B2 (ja) * | 2010-06-29 | 2014-02-12 | 株式会社タグチ工業 | 油圧配管 |
GB2482515B (en) * | 2010-08-04 | 2015-03-04 | Miller Int Ltd | Blocking bar |
-
2013
- 2013-12-11 EP EP13864674.0A patent/EP2935704A4/fr not_active Withdrawn
- 2013-12-11 EP EP17175927.7A patent/EP3321427A1/fr not_active Withdrawn
- 2013-12-11 US US14/652,876 patent/US20150330053A1/en not_active Abandoned
- 2013-12-11 KR KR1020157018924A patent/KR20150123787A/ko not_active Application Discontinuation
- 2013-12-11 CN CN201380071125.7A patent/CN104937174A/zh active Pending
- 2013-12-11 AU AU2013364566A patent/AU2013364566A1/en not_active Abandoned
- 2013-12-11 WO PCT/NZ2013/000228 patent/WO2014098616A1/fr active Application Filing
- 2013-12-11 CA CA2895410A patent/CA2895410A1/fr not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN104937174A (zh) | 2015-09-23 |
AU2013364566A1 (en) | 2015-07-09 |
CA2895410A1 (fr) | 2014-06-26 |
KR20150123787A (ko) | 2015-11-04 |
WO2014098616A1 (fr) | 2014-06-26 |
EP3321427A1 (fr) | 2018-05-16 |
EP2935704A4 (fr) | 2016-08-31 |
US20150330053A1 (en) | 2015-11-19 |
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