WO2012017191A1 - Mécanisme de barre de blocage pour couplage d'excavatrice - Google Patents

Mécanisme de barre de blocage pour couplage d'excavatrice Download PDF

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Publication number
WO2012017191A1
WO2012017191A1 PCT/GB2011/001141 GB2011001141W WO2012017191A1 WO 2012017191 A1 WO2012017191 A1 WO 2012017191A1 GB 2011001141 W GB2011001141 W GB 2011001141W WO 2012017191 A1 WO2012017191 A1 WO 2012017191A1
Authority
WO
WIPO (PCT)
Prior art keywords
blocking bar
coupler
blocking
bar
catch mechanism
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.)
Ceased
Application number
PCT/GB2011/001141
Other languages
English (en)
Inventor
Gary Miller
Howard Reay
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.)
Miller International Ltd
Original Assignee
Miller International Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miller International Ltd filed Critical Miller International Ltd
Publication of WO2012017191A1 publication Critical patent/WO2012017191A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
    • 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
    • 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
    • E02F3/365—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

Definitions

  • the present invention relates to a blocking bar for an excavator coupler, and in particular a blocking bar for a fully automatic coupler for coupling accessories, such as buckets, onto the free end of an arm of an excavator.
  • Blocking bars for the purpose of preventing inadvertent opening of latching mechanisms within couplers for excavators are well known. See, for example, GB 2330570. See also GB 2450202 and GB 2450127.
  • the known blocking bars typically operate under the influence of gravity, although springs can be added to moderate the degree of freedom of operation of those blocking bars. Alternatively they can be controlled by independently driven hydraulic rams, for allowing a powered release thereof.
  • These blocking bars although being highly reliable, have scope for improvement, such as to offer further control over the circumstances needed for a release of the blocking bar (i.e. a movement thereof from a blocking position into a non- blocking position). Such additional control could in turn further reduce the opportunities for accidental, unintentional or non-required release of the blocking bar, and thus potentially also unintended decouplings (partial or otherwise) of an accessory from the coupler.
  • a blocking bar for a latching mechanism of an excavator coupler comprising:
  • a free end for providing a latch-blocking function of the blocking bar, and a catch mechanism for selective restraint of movement of the blocking bar between a blocking position and a non blocking position of the blocking bar.
  • the blocking bar is a pivotal member for pivotal movement relative to a frame of the coupler.
  • the blocking bar comprises a pivot bearing, a pivot axis or a pivot axle, about or with which it can be pivotably mounted onto the frame of the coupler.
  • the catch mechanism takes the form of a hook.
  • the catch mechanism is pivotably attached to the blocking bar.
  • the point of attachment of the catch mechanism to the blocking bar lies between the free end of the blocking bar and a pivot axis of the blocking bar.
  • the catch mechanism is adapted to be selectively engageable against a member of the frame.
  • member of the frame is fixed member of the frame, and more preferably it is a stop for the blocking bar for preventing an excessive degree of motion of the blocking bar within the coupler.
  • stop restrains degree of movement freedom of the blocking bar to prevent the blocking bar from moving through a final blocking position thereof when moving from a non-blocking position.
  • the member of the frame takes the form of a pin, or some other round sectioned member.
  • the member extends perpendicular to the sidewalls of the coupler's frame.
  • the blocking bar is a powered blocking bar.
  • the power is provided by a hydraulic cylinder.
  • the hydraulic cylinder may be supplied as an attached part of the blocking bar, or it may be integrated into the blocking bar, as per the disclosure in GB1002018.8. Alternatively the hydraulic cylinder may be taken to be a separate component of the coupler that is simply attached to the blocking bar, for example at a pivot point.
  • the hydraulic cylinder may be pivotably mounted to the frame of the coupler - at a different location to the blocking bar.
  • the blocking bar's control is generally independent to the control of the latching mechanism, for example such that the blocking bar can be controlled from the cab of the excavator independent to the movement of the latching mechanism from its latching position.
  • the movement of the latching mechanism from that latching position is subject to the control of the blocking bar - the blocking bar needs to have been moved from a blocking position into a non-blocking position before that latching mechanism can be moved into a non-latching position.
  • the movement of the latching mechanism is under the control of a primary hydraulic cylinder of the coupler. That primary hydraulic cylinder is thus preferably independent to any hydraulic cylinder that may be provided for powering the blocking bar.
  • Independent control of the blocking bar may be gravity based, as per GB2330570, rather than under the control of a hydraulic cylinder. Nevertheless, it is preferred that the two separate, dedicated, hydraulic circuits be provided for operational control of the blocking bar and the latching mechanism of a coupler featuring the blocking bar of the present invention.
  • the present invention also provides an excavator coupler comprising pair of jaws for attaching an excavator accessory thereto via a pair of parallel-spaced attachment pins, one of the jaws being associated with a powered latching mechanism and a blocking bar as described above, the blocking bar being for selective control of the movement of the powered latching mechanism from a latching position into a non-latching position.
  • the coupler features a secondary latching mechanism, associated with the other jaw, for latching a second attachment pin of the accessory in that other jaw.
  • a dedicated hydraulic circuit is provided for controlling the secondary latching mechanism of the coupler.
  • the first powered latching mechanism is a latch for a rear jaw of the coupler.
  • the secondary latching mechanism is a latch for a front jaw of the coupler.
  • the front jaw of the coupler opens generally outwards at the front of the coupler whereas the rear jaw preferably opens generally outwards downwardly relative to the frame of the coupler.
  • the blocking bar is arranged within the coupler such that the blocking bar has a primary axis, between its free end and its pivot axis, that extends generally towards the rear of the first powered latching mechanism from the pivot axis of the blocking bar.
  • the blocking bar is preferably pivotable relative to the frame of the coupler, whereby it can then preferably have a range of movements between a final blocking position and a non blocking position through a range of angles of up to 45°.
  • the non-blocking position is a raised position relative to the frame of the coupler.
  • the catch mechanism of the blocking bar is arranged to be gravity operated.
  • the catch mechanism will have fallen into a position of engagement with the member of the frame.
  • the catch mechanism preferably hooks over the member of the frame in this condition, thereby preventing movements of the blocking bar from that blocking position into a non-blocking position, even upon powering the blocking bar's hydraulic cylinder.
  • the catch mechanism is arranged such that by default it will control or restrict movement of the blocking bar until it is released from a default, catching condition, that default, catching condition being achieved whenever the coupler is arranged in the default, at rest, orientation.
  • the catch mechanism includes a hooking member for engaging a catch (such as the member of the frame).
  • that hooking member is oriented to point away from the free end of the blocking bar.
  • the catch mechanism when operating, is thus arranged to prevent the movement of the blocking bar from a blocking position into a non blocking position, even upon powering the blocking bar's hydraulic cylinder. Further, due to the direction of operation of the catch mechanism - in this embodiment, the hooking member points away from the free end of the blocking bar, with that hooking member being arranged underneath the blocking bar, but between the pivot axle of the blocking bar and the free end of the blocking bar - the catch mechanism will also prevent the movement of the blocking bar from a blocking position into a non blocking position even throughout an inversion where that inversion occurs in a uncurling direction - i.e.
  • the catch mechanism of the blocking bar thus provides a mechanical lock-down for the blocking bar during normal digging operations.
  • the catch mechanism can release from its catch, upon the inversion occurring (a rotation beyond the perpendicular, i.e. beyond the vertical), thereby allowing the blocking bar to be powered to a non-blocking position (or for it to release to a non-blocking position under the influence of gravity, if it is a graity operated blocking bar instead of a powered one).
  • the catch mechanism of the present invention therefore serves to prevent inadvertent decoupling procedures during normal digging procedures, only allowing a decoupling procedure to occur, due to the mechanical catching mechanism, upon a deliberate repositioning of the coupler into the required, curled, inverted orientation.
  • the blocking bar may feature a pair of catch mechanisms, one on either side of the blocking bar.
  • the catch mechanism is attached to the blocking bar with a pivot pin.
  • the catch mechanism is mounted onto the side of the blocking bar in a rebated section thereof.
  • the catch mechanism is bifurcated so as to engage on both sides of the blocking bar's main body.
  • rebates are provided on both sides of the main body of the blocking bar.
  • the or each rebate can allow a range of rotation of the catch mechanism relative to the blocking bar's main body - end walls of the rebate(s) may provide rotation stops for the catch mechanism. These stops can thus serve to limit the available degrees of rotation of the catch mechanism such that the catch mechanism cannot rotate into an inoperable, non-gravity recoverable, state, such as a position lying over the top of the blocking bar. A bifurcated catch mechanism, however, cannot rotate over the top of the blocking bar anyway.
  • the free end of the catch mechanism which may form the hooking member, preferably comprises a chamfered or angled or rounded outer surface for facilitating a reengagement of the catch mechanism over the member of the frame into a catching condition when the blocking bar drops to a default or blocking position relative to the frame.
  • the member may be so profiled so as to facilitate that reengagement.
  • the catch mechanism may itself be powered for independent control thereof. It might even be selectively biased towards a catching condition, with an independent powered release being adapted to overcome the biasing force for selective release of the catch mechanism.
  • Figure 1 illustrates a cutaway view of a coupler of the present invention, including a blocking bar of the present invention in a raised, non-blocking position;
  • Figure 2 shows the same coupler as Figure 1 but in which a latching mechanism for a rear jaw thereof has been powered into a fully closed position.
  • the blocking bar is still maintained in a raised, or non-blocking, position, by the extended state of its dedicated hydraulic cylinder;
  • Figure 3 shows that same coupler again, but in which the blocking bar has been dropped into a blocking position and in which its catch mechanism has dropped into a catching position relative to a member of the frame;
  • Figure 4 shows a side elevation of the same coupler again, but rotated into an inverted condition via a non-crowd direction;
  • Figure 5 shows that same coupler again, but rotated through a different direction of rotation - towards a crowd position, whereupon the catch mechanism releases from the member of the frame;
  • Figure 6 illustrates, in perspective, the same coupler again, again rotated towards a crown direction, but this time in a more vertical condition than in Figure 5;
  • Figure 7 illustrates a blocking bar assembly of the present invention, with hydraulic pipes attached.
  • the coupler 10 comprises a frame 12 with a top half 14 and a bottom half 16 (only part of which is readily visible).
  • the top half 14 comprises two pairs of attachment-pin-receiving holes, only two of which are illustrated - the broken away part of the coupler would feature the two missing holes of the two pairs of holes 18.
  • the bottom half 16 it comprises a front jaw 20 and a rear jaw 22 for receiving attachment pins of an accessory.
  • the front jaw 20 of the coupler has an opening extending generally towards the front 24 of the coupler and the rear jaw 22 has an opening extending generally downwards relative to, or out of the bottom of, the coupler 10.
  • the "forwards" and “downwards” directions are relative since these couplers 10 are designed to be rotated between horizontal and vertical orientations by the operations of an arm of the excavator. Nevertheless, they refer to directions when the coupler is in a generally horizontal, and non-inverted orientation, with the front jaw facing towards the cab of the excavator.
  • the coupler 10 also features a pivotable latching hook 26 that is associated with the rear jaw 22.
  • That blocking bar 28 comprises a main body 29 with a free end 31 at one end thereof and a pivot axle 32 is located at the other end thereof.
  • the pivot axle 32 defines the axis about which the blocking bar 28 can rotate within the frame 12 of the coupler 10.
  • the pivot axle 32 takes the form of a pivot pin extending through the sides of the frame 12 of the coupler 10. It is a common pivot axle also for a primary hydraulic ram 34 of the coupler - the hydraulic ram (or hydraulic cylinder) for the pivotable latching hook 26.
  • a greasing nipple 36 is provided in the blocking bar 28 for greasing that pivot axle 32 to allow regular lubrication of the blocking bar 28 (and the hydraulic cylinder) from a single location. This ensures that there can be rotation of the blocking bar (and independent thereto, the hydraulic cylinder) relative to that axle 32.
  • the blocking bar 28 in this embodiment also features its own dedicated hydraulic ram 38. It is for powering the blocking bar 28 between a blocking position ( Figures 1 and 2) and a non-blocking position ( Figures 3 and 4), and potentially vice-versa, if the ram is double-acting, although a sprung return may be preferred.
  • the dedicated hydraulic ram 38 is also pivotably mounted to the frame 12 of the coupler 10, this time by a further pivot axle 40, which axle is not coaxial with the earlier axle 32. A driving moment against the blocking bar 28 can thus be achieved with that dedicated hydraulic ram 38, as explained below.
  • that further pivot axle 40 also is a dual purpose axle - it additionally provides a pivot axle for the coupler's secondary latch 42 - a latch that is provided for the front jaw 20.
  • the dual purposes for the two axles 32, 40 although being preferred for keeping costs down, is only optional - dedicated axles can thus instead be provided separately for each pivotal member.
  • axles 32, 40 mount the pivoting members (the ram 34, the blocking bar 28, the secondary latch 42 and the dedicated ram 38) pivotally to a fixed location on the frame, via the sides of the frame, it is possible instead for the axles 32, 40 to mount onto internal components of the coupler instead, including moving parts thereof. Fixed locations on the frame 12 of the coupler 10, however, are preferred for the axles since that provides added strength or stability for the various internal components of the coupler.
  • the first end of the dedicated hydraulic ram 38 is mounted in a pivotal manner at a fixed location relative to the frame of the coupler, as explained above. That location is shown to be al a lower location than the axle 32 for the blocking bar.
  • the other end of that dedicated hydraulic ram 38, here the rod end then is connected to the underside of the body 29 of the blocking bar 28 at another pivot point, or a mounting position 44.
  • mounting position 44 is located on a downwardly extending flange or projection on the underside of the blocking bar 28.
  • the dedicated hydraulic ram 38 is thus mounted wholly below, or lower down than, the blocking bar 28. Preferably, and as shown, it lies least underneath the blocking bar, and underneath the pivot axis 32 of the blocking bar 28.
  • the blocking bar 28 is modified over prior art blocking bars at least by the provision of a catch mechanism 46 therefor.
  • that catch mechanism 46 takes the form of a pivoting hook that is pivotably mounted to the main body 29 of the blocking bar 28.
  • the catch mechanism 46 has a pivot pin 48 at a first end thereof, which pivot pin connects the catch mechanism 46 to the main body 29 of the blocking bar 28.
  • a single, bifurcated catch mechanism 46 is provided - it has a bifurcated first end, whereby two tines of that first end extend either side of the main body 29 of the blocking bar 28, with the pivot pin 48 then extending through both of those tines and the main body 29 of the blocking bar 28, thus securing that hook onto the main body 29 in a secure, but pivotable manner relative to that main body.
  • a catch mechanism 46 only extending on one side of the blocking bar, or two separate catch mechanisms 46, one on either side of the blocking bar.
  • a hooking member 52 At the end of the catch mechanism 46, away from the two tines, there is a hooking member 52. It is formed as a foot of the hook 46, with the leg extending up to the main body 29 of the blocking bar. As shown in figures 1 and 2, that hooking member 52 will rest, under the influence of gravity, against a member 54 of the frame 12 - a catch for the catch mechanism when the blocking bar is lifted into a non-latching position. That member 54 is in the form of a pin that extends between the sidewalls of the frame 12 of the coupler.
  • the blocking bar 28 Upon engaging the hooking member 52 under that member 54, even upon actuating the hydraulic ram 38 for the blocking bar 28, the blocking bar 28 cannot be moved into a non-blocking position. That is because the catch/hooking member will together resist such a movement of the blocking bar 28 - the influence of gravity, combined with the shape of the hooking member, allows this to occur (the hooking member's catch-facing surface returns sufficiently around the catch 54 for that purpose, so as not to release itself, under loading from the dedicated hydraulic ram 38, from the catch 54).
  • the catch mechanism 46 thus provides a control mechanism for the operation of the blocking bar 28, in that the catch mechanism must be disengaged before the blocking bar can be raised into a non-blocking position.
  • an overload prevention circuit might be built into the hydraulic ram 38, such as a pressure relief valve or a displacement ram. This will prevent any build up in hydraulic pressure, as a result of an operation of that hydraulic ram while the catch mechanism is in a catching condition, from overloading or breaking one or more of the blocking bar, the hydraulic ram or the catch mechanism 46, or any of the connections therebetween.
  • Figure 4 shows the status of the catch mechanism 46 upon rotation of the coupler 10 into an inverted position via a rotation through the direction shown by the arrow 56 - a rotation referred to as an uncurling rotation, a non-crowding rotation or a rotation from the horizontal orientation, with the front 24 of the coupler 10 pointing towards the cab of the excavator, away from the cab of the excavator to an inverted orientation.
  • an uncurling rotation a non-crowding rotation or a rotation from the horizontal orientation
  • the status of the catch mechanism 46 is shown instead upon rotating the coupler 10 in the other direction, as shown by arrow 58 in Figure 5, i.e. into a curled condition or towards a crowd position (a rotation from the horizontal orientation, with the front 24 of the coupler 10 pointing towards the cab, towards the cab of the excavator to an inverted orientation).
  • this alternative rotation direction causes the catch mechanism 46 to operate differently.
  • the hooking member 52 falls under the influence of gravity away from that member 54 and into a non-catching position.
  • This undoing of the catch mechanism thus allows the blocking bar 28 now to be operated by the dedicated hydraulic ram 38 between its blocking position (as shown in Figures 5 and 6) and its non-blocking position (as shown in Figures 1 and 2).
  • the above comparative illustrations thus show that the blocking bar 28 is mechanically restrained from movements between a blocking position and a non-blocking position when the coupler is rotated in a uncurling direction, and is not mechanically restrained from such movements, i.e. it is free to be powered into a non-blocking position, when the coupler is rotated instead towards a crowd position, and this is without the provision of a spring arm that engages against the arm of the excavator - the equivalent solution provided in GB2330570.
  • the catch mechanism 46 has the two tines of the catch mechanism 46. They are located within recesses or rebates 59 formed in the sides of the blocking bar 28. Those recesses 59 are defined by corresponding ends 60, 62. Those ends 60, 62 can serve to define stops for controlling the degree of rotation of the catch mechanism 46 relative to the blocking bar 28. In this illustrated embodiment, however, only one of those ends 60 provides that function.
  • the other end merely reinstates a given casting- thickness for the blocking bar 28 at the free end 30 of the blocking bar for giving a wider cross section for that free end, whereby a more positive engagement against the flange at the rear of the pivotable latching hook 26 is achievable in the event that the pivoting latching hook 26 was to be powered towards a non latching position by its hydraulic ram 34 prematurely (the rear 64 of the hook 26 would bear against the free end 30 of the blocking bar 28).
  • the blocking bar's main body might, of course, be cast with those recessed already in the casting.
  • a stop for the rotation of the catch mechanism 46 in the other direction can instead be provided by either one or both of two other features.
  • a manifold 66 for the hydraulics of the dedicated hydraulic ram is provided on the top of the blocking bar 28. That manifold 66 has an underside that overlaps slightly across the recessed sides of the blocking bar 28. That underside therefore can provide a surface against which the catch mechanism 46 can engage, as shown in Figure 5, for acting as a stop.
  • the catch mechanism itself will have an internal surface that would ultimately bear against the underside of the blocking bar 28, thereby providing a stop.
  • the catch mechanism thus cannot rotate relative to the blocking bar's main body 29 beyond a given range of rotations, which range allow the hooking member 52 always either to rest against or away from the member 54 of the frame, but without getting stuck on top of that member (which would disable the blocking bar).
  • the manifold 66 on the top of the blocking bar comprises two fluidly linked holes.
  • One hole - usually the upper hole is for receiving the hydraulic supply pipe 74 (see Figure 7) from the excavator's hydraulic control system (not shown), whereas the second hole is for feeding hydraulic fluid from that primary supply pipe to the dedicated hydraulic ram 38.
  • a short pipe 76 (shown in figure 7) is provided. It extends from that second hole to a hole 68 in the head of the dedicated hydraulic ram 38.
  • a blocking bar assembly can be provided as a separately replaceable, preassembled component of the coupler 10, which assembly features the blocking bar 28, with its catch mechanism 46 and the dedicated hydraulic ram 38, and with its pipe connecting the hole 72 in the manifold 68 to the hole 68 in the head of the ram 38.

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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)
  • Component Parts Of Construction Machinery (AREA)

Abstract

L'invention concerne une barre de blocage (28) pour un mécanisme de verrouillage (26) d'un coupleur d'excavatrice (10), laquelle barre de blocage (28) comprend une extrémité libre (31) assurant une fonction de blocage de verrou de la barre de blocage (28), et un mécanise à cran (46) permettant de retenir sélectivement le mouvement de la barre de blocage (28) entre une position de blocage et une position de non-blocage de la barre de blocage (28). Le mécanisme à cran (46) empêche la libération de la barre de blocage (28) à moins que le coupleur (10) soit inversé vers une position repliée.
PCT/GB2011/001141 2010-08-04 2011-07-29 Mécanisme de barre de blocage pour couplage d'excavatrice Ceased WO2012017191A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1013155.5 2010-08-04
GB1013155.5A GB2482515B (en) 2010-08-04 2010-08-04 Blocking bar

Publications (1)

Publication Number Publication Date
WO2012017191A1 true WO2012017191A1 (fr) 2012-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/001141 Ceased WO2012017191A1 (fr) 2010-08-04 2011-07-29 Mécanisme de barre de blocage pour couplage d'excavatrice

Country Status (2)

Country Link
GB (1) GB2482515B (fr)
WO (1) WO2012017191A1 (fr)

Cited By (2)

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WO2014072709A1 (fr) 2012-11-08 2014-05-15 Miller International Ltd. Dispositif d'accouplement d'excavatrice muni d'un verrou avant, et agencement de capteur de flèche
CN119308375A (zh) * 2024-11-06 2025-01-14 徐州徐工挖掘机械有限公司 一种锁紧组件、锁紧结构、换电结构及新能源挖掘机

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US20150330053A1 (en) * 2012-12-18 2015-11-19 Jb Attachments Limited A coupler
DE202014001328U1 (de) * 2014-02-13 2015-05-15 Kinshofer Gmbh Schnellkuppler

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GB2330570A (en) 1998-09-08 1999-04-28 Miller Ronald Keith Quick coupler for bucket excavators
WO2005026454A1 (fr) * 2003-09-18 2005-03-24 Patrick Mccormick Dispositif d'attache rapide pour outil d'excavateur
WO2008031590A2 (fr) * 2006-09-13 2008-03-20 Ian Hill Coupleur pour pelles hydrauliques
GB2450202A (en) 2007-06-13 2008-12-17 Miller Uk Ltd Coupling an accessory to an excavator arm
GB2463298A (en) * 2008-09-09 2010-03-10 Miller Uk Ltd A coupler for an excavator

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EP2087178A2 (fr) * 2006-09-04 2009-08-12 Miller UK Limited Coupleur
US8011121B2 (en) * 2008-08-07 2011-09-06 Paladin Brands Group, Inc. Spread-style coupler with supplemental safety lock
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GB201013155D0 (en) 2010-09-22
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