EP2910688A1 - Verriegelungs- und freisetzungssystem - Google Patents

Verriegelungs- und freisetzungssystem Download PDF

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Publication number
EP2910688A1
EP2910688A1 EP15156149.5A EP15156149A EP2910688A1 EP 2910688 A1 EP2910688 A1 EP 2910688A1 EP 15156149 A EP15156149 A EP 15156149A EP 2910688 A1 EP2910688 A1 EP 2910688A1
Authority
EP
European Patent Office
Prior art keywords
lock
fixed
translation
rotation
actuating body
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Withdrawn
Application number
EP15156149.5A
Other languages
English (en)
French (fr)
Inventor
Marco Faedi
Giorgio 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
Original Assignee
Cangini Benne SRL
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 Cangini Benne SRL filed Critical Cangini Benne SRL
Publication of EP2910688A1 publication Critical patent/EP2910688A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/365—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
    • E02F3/3627—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
    • E02F3/3645—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
    • E02F3/3672—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 regards the field of mechanical joints and relates to a fast lock and release system.
  • the present invention relates to a fast lock and release system for quickly locking and releasing a tool.
  • the present invention can be advantageously applied to the field of machines for earth movement, demolition works and the like, and relates to a device for locking a tool, for example a bucket or the like, in, and respectively releasing it from, a working arm of a main operating machine, for instance an excavator.
  • fast lock and release systems for the reversible connection of mechanical elements of different kind.
  • These fast lock and release systems are widely used and appreciated in the field of machinery for earth movement, demolition works and/or similar works, as they allow to use different tools on a same operating machine.
  • the known systems allow to use, move or actuate both a bucket and an impact hammer by means of the working arm of the same operating machine; in this way, it is possible to replace a tool with the other, according to the actual needs, in a safe easy and fast way.
  • FIG. 1 Among the known lock and release systems, those of the type illustrated in figures 1-4 are widely used and appreciated; these are essentially comprised of an adaptor member 200, designed to be fixed (for instance by means of welding, screws, bolts or similar solutions) to a tool T, and of a lock and release device 300, designed to be fixed for example (again by means of known solutions) to the working arm A of a main operating machine (not shown in the figures).
  • the device 300 is designed to be, alternatively, locked in and released from the adaptor member 200, the lock of the tool T in, and the release thereof from, the working arm A is thus provided.
  • the "fixed” adaptor member 200 (wherein “fixed” means designed to be “fixed” to the tool T) essentially comprises an engagement bar 205, while the device 300 comprises both fixed engagement means 304 and movable engagement means 306, that can be namely translated along a direction substantially perpendicular to the direction of extension of the engagement bar 205 of the fixed member 200.
  • Each of the fixed engagement means 304 that are usually two and are spaced from each other by a given distance in the direction of extension of the bar 205, comprises a U-shaped engagement portion for housing a corresponding portion of the bar 205.
  • the lock and release device 300 can be rotated around the bar 205 of the fixed member 200 so that the device 300 and the fixed member 200 achieve the reciprocal position shown in figure 3 ; in this position, by translating the movable engagement means 306 (that are usually two bolts positioned at a given reciprocal distance along a direction parallel to the bar 205) from the back position of figure 3 to the forward position of figure 4 , each of the two bolts 306 engages with a corresponding seat 207 of the member 200, thus completing the lock of the device 300 in the member 200 and therefore of the tool T in the working arm A.
  • the movable engagement means 306 that are usually two bolts positioned at a given reciprocal distance along a direction parallel to the bar 205
  • a particular problem is that an accidental release of the bolts 306, as well their only apparent lock, could result in a complete detachment (complete release) of the device 300 from the adaptor member 200, and thus of the tool T from the arm A, with severe risk for the operators working in the range of the working machine, for instance an excavator, especially if the tool is released when it is in raised position and the arm carrying the adaptor member 200 is moving.
  • an object of the present invention is to provide a lock and release system allowing to overcome the drawbacks of the prior art lock and release systems.
  • a first object of the invention is to provide a lock and release system, wherein the parts that are reciprocally engaged can be released by means of fast and simple operations, without the need for extraordinary maintenance operations or, in the worst case, repairing operations.
  • an object of the present invention is to provide a lock and release system allowing to avoid an excessive engagement of the involved parts, and therefore avoiding the undesired blockage of the engaged parts.
  • a further object of the present invention is to provide the lock and release system with safety means that prevent the tool from being accidentally released (completely detached). Moreover, a further object of the present invention is to provide safety means that can be automatically inserted and extracted by respectively locking and releasing the movable engagement means.
  • an object of the invention is to provide safety means that can be translated, wherein the translation of the safety means occurs simultaneously with the translation of the movable engagement means.
  • the present invention is particularly advantageously applied in the fields of earth movement, demolition works and the like.
  • the present invention is advantageously applied for locking a tool, for example a bucket, in, and respectively releasing it from, a working arm of a main operating machine, for instance an excavator.
  • the applications of the system according to the invention are not limited to the case of tools and operating machines for earth movement, demolition works or similar works. Namely, the present invention can be conveniently applied every time there is the need for a fast lock and release of mechanical members of different kind and for uses other than a movable support.
  • the present invention is based upon the general concept, according to which the drawbacks of the state-of-the-art fast lock and release systems can be effectively overcome by combining the movable engagement means of the lock and release system with movable safety means, designed to be inserted and extracted (respectively engaged in, and released from, corresponding abutment means).
  • movable safety means designed to be inserted and extracted (respectively engaged in, and released from, corresponding abutment means).
  • further advantages will be provided by designing these safety means so that they can engage with, and be respectively released from, the same fixed engagement means of the adaptor member designed to be engaged by the fixed engagement means of the device.
  • further advantages will be provided by using common movement (translation) means both for the movable engagement means (bolts) and the safety means of the device.
  • the movable engagement means and the safety means engage respectively with opposite portions of the same component (for instance a bar) of the fixed element of the system. In this way it is possible to prevent the engaged part from bending, and thus to avoid an excessive engagement of the movable engagement means, that can be released in an easy immediate way, also if the engaged component is subjected to high stresses.
  • the object of the present invention is a system according to claim 1, i.e. a fast lock and release system for quickly locking, just by way of non-limiting example, a tool in, and releasing it from, the working arm of an operating machine, this system comprising a member, designed to be fixed to the tool, and a lock and release device, designed to be fixed to the working arm, this lock and release device being designed to be locked in, and released from, this member, thus respectively quickly locking the tool in, and releasing it from, the working arm, wherein this member comprises first fixed engagement means and this lock and release device comprises second fixed engagement means designed to engage with these first fixed engagement means of this member; and wherein this lock and release device comprises safety means that can be translated from a first back position to a second forward position wherein these safety means engage with the first fixed engagement means of this member.
  • the translatable safety means engage with the first fixed engagement means so as to prevent the second fixed engagement means from being accidentally released.
  • these first fixed engagement means comprise a bar arranged transversally to the direction of translation of the safety means, and these second fixed engagement means engage with two portions of the outer surface of this bar that are spaced from each other along the direction of extension of the same bar, wherein these safety means, in this forward position, engage with a portion of the outer surface of this bar arranged between the two portions of the outer surface engaging with the second fixed engagement means.
  • the safety means translate by means of the rotation of an actuating body that can rotate around a first axis of rotation perpendicular to the direction of translation of the safety means.
  • the actuating body is fixed to these safety means so that the rotation of this actuating body in two opposite directions of rotation leads to a translation of these safety means towards respectively this forward position and this back position.
  • this actuating body comprises a first portion with a cam-shaped surface designed to engage, at least during the rotation of the rotating body, with a constraining element interposed between the actuating body and the safety means.
  • the cam-shaped surface is defined by the edge of a shaped hole of this first portion of the actuating body and the constraining element is housed in the shaped hole at least partially.
  • the safety means may comprise a drag element fixed to one end of the constraining element in a rotary manner.
  • this end of the drag element fixed to the constraining element in a rotary manner is fork-shaped with two opposite portions defining an inner space inside which the first portion of the actuating body is housed at least partially.
  • the device comprises a control member designed to push the actuating body so as to drive this actuating body into rotation at least in the direction of rotation leading to the translation of the safety means towards the forward position.
  • the- actuating body is designed to be driven into rotation by means of an actuating tool in the direction of rotation leading to a translation of the safety means towards the back position.
  • the actuating body may be rigidly fixed to a pin rotating around the first axis of rotation, and a portion of this pin may be engaged by means of the tool.
  • this member comprises fixed engagement abutments and the device comprises third engagement means that can be translated from a back position to a forward position where they engage with the fixed engagement abutments.
  • the direction of translation of the third engagement means is substantially parallel to, and opposite the direction of translation of these safety means towards the forward position and/or the translation of these third engagement means is provided by means of the rotation of the actuating body and/or this actuating body engages with the safety means so that the rotation of the actuating body in two opposite directions of rotation leads to a translation of the third engagement means towards the forward position and the back position respectively.
  • FIG. 5 shows the main components of the lock and release system 100 according to an embodiment of the invention.
  • the system 100 comprises a substantially box-shaped device 300 provided with (two) fixed engagement means 304, that are U-shaped and are designed to engage with a fixed engagement bar 205 of a member 200 (not shown in figure 5 ) so that each of them houses a corresponding portion of this engagement bar 205 at least partially (see also the following figures).
  • the device 300 is provided with two parallel bolts 306, carried by the box-shaped body 360 of the device 300 in a sliding manner.
  • Each bolt 306 is housed in a freely sliding manner inside a hole 364 provided in the box-shaped body 360 by means of the interposition of a bushing 363 and the two bolts 306 are rigidly joined together by means of a connecting member 309 arranged transversally, so as to define a substantially U-shaped single body 310.
  • the connecting member 309 and the two bolts 306 are movable between a back position, wherein the bolts 306 are completely housed inside the box-shaped body, and a forward position, wherein at least the ends of the bolts 306 project from the box-shaped body.
  • each bolt-shaped engagement means 306 can engage with a respective seat 207 of an abutment means 208 of the member 200 to provide, together with the fixed engagement means 304 and 205 of the device 300 and the adaptor member 200 respectively, the connection between the device 300 and the adaptor member 200, and therefore between the tool T and the actuating means (working arm A of the operating machine).
  • the connecting member 309 is comprised of two parts, but it can also be produced in a single piece if this is useful due to construction needs.
  • the device 300 also includes elastic means 311 comprising, in the embodiment shown in figure 5 , two helical springs 311 acting between a fixed portion of the box-shaped body of the device 300 and the two bolt 306, or on the connecting member 309.
  • elastic means 311 comprising, in the embodiment shown in figure 5 , two helical springs 311 acting between a fixed portion of the box-shaped body of the device 300 and the two bolt 306, or on the connecting member 309.
  • the device 300 comprises stop means 340 designed to ensure that the bolts 306 stop in the lock position or, at least, to limit the undesired or accidental translation of the bolts 306 from the lock position.
  • these stop means 340 comprise a rotating body 341, that is housed inside the box-shaped body 360 of the device 300 and is joined, in a rotary way, to the lid of the box-shaped body 360 by means of a rotation pin 347 passing through a through hole of this lid, wherein the end of the pin 347 opposite the stop means 340 is therefore outside the box-shaped body of the device 300, wherein on the outer end of the pin 347 there is connected an actuating lever 355 (whose operation will be described in greater detail below).
  • a sliding means 345 (represented by means of a pin in figure 5 ) is fixed to the connecting member 309 connecting the bolts 306 together, in intermediate position between the lines of action of the two helical springs of the elastic means 311, so as to project from the connecting means 309 and to extend in a direction parallel to the pin 347.
  • the rotating body 341 is provided with a through hole 348 shaped like a slot (curved in plan view) and provided with concave extensions forming seats.
  • the hole 348 has a first curved elongated edge, peripherally delimited by a cam-shaped annular surface 342 having a first lock seat 343, a second release seat 344 and a set of safety stop seats 350, 351, 352 that are arranged along the edge of the hole 348 and are preferably three.
  • the sliding means 345 is partially housed in the hole 348 and is therefore driven into translation by the annular surface 342 following the rotation of the rotating body 341.
  • the means 345 when the bolts 306 are in forward (lock) position, the means 345 is housed in the lock seat 343, while, when the bolts 306 are in back position, the sliding means 345 is housed in the release seat 344.
  • the lock seat 343 and the release seat 344 are respectively arranged at the opposite ends of the hole 348 and, therefore, of the annular surface 342, and define the end positions of rotation of the rotating body 341 (and therefore of translation of the bolts 306).
  • the end of the release seat 344 is provided with a stop means 346, slightly projecting in a direction almost parallel and opposite to that of the elastic means 311.
  • This stop means 346 is designed to abut on the sliding means 345, holding it in the release seat 344.
  • the sliding means 345 comprises a hollow cylindrical body, for instance a bushing, that freely rotates around a pin that extends from the connecting member 309 and that, during the movement of the means 345 in the hole 348, rotates around this pin due to the contrast with the edge of the hole 348, in particular with the cam-shaped annular surface 342.
  • the sliding means 345 acts as a tappet for the rotating body 341 designed to interact with the annular surface 342 of the hole 348.
  • the seats 350, 351, and 352 allow a safe rotation with stops of the body 341 with respect to its pivot axis, as the lock seat 343 is already designed to condition the width of the stroke of the bolts 306.
  • the number of these seats 350, 351, 352 may vary, from minimum one seat, according to the needs and/or the circumstance and/or the applications.
  • the presence of the first lock seat 343, of the second release seat 344 and of the seats 350, 351, 352 allows to detect stop positions in safe conditions of the connecting member 309 and of any other devices mechanically connected thereto, as it will be explained below.
  • the stop means 340 further comprise an elastic member 353, acting between a fixed portion of the device 300 and the rotating body 341 to transmit to this latter a rotation torque in the direction of rotation corresponding to a translation of the bolts 306 towards the forward (lock) position.
  • the rotating body 341 always abuts onto the sliding member 345, thus substantially insulating the device 300 against the vibrations due to hammers or other tools.
  • Each helical spring 311 is partially housed in a longitudinal space of the respective bolts 306.
  • the box-shaped body 360 is therefore substantially fluid-proof, and is provided with entrance for lubricant or grease nipples (not shown) for filling the box-shaped body 360 with grease so as to lubricate and to avoid, together with the seal means, the entrance of dust, sand, mud, dirt and debris.
  • the device 300 also comprises a control member 312, housed in a sliding manner in a through hole, known and therefore not shown, of the exit wall 361, so as to be translatable along the same direction of the bolts 306.
  • the control member 312 has an end, outside the box-shaped body 360, oriented towards the abutment means 208 of the adaptor member 200, wherein the opposite end of the control member 312 acts on the stop means 340.
  • the control member 312 can be actuated by abutting against the abutment means 208 so as to act onto the stop means 340.
  • the rotation pin 347 of the rotating body 341 has an actuating head 354, engaging with a lever tool 355 to drive the rotating body 341 into rotation.
  • the fixed engagement means 304 of the device 300 reciprocally engage on the engagement bar 205 of the adaptor member 200, as shown, for example, in figure 2 .
  • the device 300 with the bolts 306 in back position (housed inside the box-shaped body 360, as shown in figure 7 ), and, thus, with the sliding means 345 in the release seat 344, rotates with respect to the adaptor member 200 in clockwise direction, up to achieve the reciprocal position of figure 3 ;
  • the control member 312 abuts against the abutment means 208, corresponding to the adaptor member 200, and is therefore pushed towards the inside of the box-shaped body 360, so as to act on the rotating body 341, whose consequent rotation (in counter-clockwise direction in figure 7 ) frees the release seat 344 from the sliding means 345, allowing the elastic means 311 to bring the bolts 306 to the forward position of figure 6 , where the ends of the bolts 306 project from the box-shaped body 360
  • the pushes and translations of the bolt means 306 towards the inside, in the joining condition of figure 6 can lead the sliding means 345 to abut against, and to stop in, one of the safety stop seats 350, 351, 352, as shown for instance in figure 9 , namely in a position where the ends of the bolts 306 always engage with the respective seats 207 of the adaptor member 200, thus preventing the device 300 from being accidentally released from the adaptor member 200, and thus ensuring a real safe joining.
  • the lock means 340 of the device 300 comprise a second rotating body 400, arranged above the rotating body 341 and engaging with the actuating pin 347, in an integral manner, along the same actuating pin 347.
  • the actuating pin 347 is partially housed in an engagement seat of the second rotating body 400, so that a rotation of this pin 347 causes the simultaneous rotation, in the same direction, of the first rotating body 341 and of the second rotating body 400.
  • the second rotating body 400 comprises a shaped through hole 401, whose edge defined a cam-shaped surface 402.
  • a roll or nipple 403, that can rotate around a pin 404, is housed in the hole 401, wherein the opposite ends of the pin 404 project from the opposite parts of the rotating body 400 and wherein the nipple 403 engages, due to rotation, with the cam-shaped surface 402.
  • the nipple 403 is driven into rotation by means of the abutment against the cam-shaped surface 402.
  • each of the opposite ends of the pin 404 is housed in a corresponding seat of a drag element 405, whose fork-shaped portion facing the second rotating body 400 comprises two opposite ends spaced from each other by a given distance, in each of which there is provided a seat for housing a corresponding end of the pin 404.
  • the second rotating body 400 is partially housed in the space defined by the two opposite ends of the fork-shaped portion of the drag element 405.
  • a spacer 406 is fixed to the end of the drag element 405 opposite to the rotating body 400, a safety stop 407 being fixed to the end of the spacer 406 opposite to the drag element 405; in other words, the spacer 406 is interposed between the drag element 405 and the safety stop 407, wherein the drag element 405, the spacer 406 and the safety stop 407 are joined together by means of a screw 408.
  • the pin 404 slides along the hole 401 (with the nipple 403 rolling on the cam-shaped surface 402) from the position of figure 11 towards the opposite end of the hole 401, i.e. up to achieve the position shown in figure 14 . While the pin 404 slides along the hole 401, thanks to the contrast between the nipple 403 and the cam-shaped surface 402, also the drag element 405, and therefore also the spacer 406 and the safety stop 407, translate, in particular towards the outside and up to achieve the final forward position shown in figure 13 .
  • the safety stop 407 abuts against the bar 205 of the adaptor member 200, in particular on the surface portion of the bar 205 opposite to the surface portion of the bar 205 engaging with the fixed engagement means 304 of the device 300.
  • the integral joining between the rotating bodies 341 and 400, the presence of the first lock seat 343, of the secondo release seat 344, and of the seats 350, 351, 352, allow to detect a plurality of intermediate safe lock/stop positions between the back position, wherein the bolts 306 are completely housed inside the box-shaped body and the safety stop 407 is in back position, and the forward position, wherein at least the ends of the bolts 306 project from the box-shaped body and the safety stop 407 is in the respective forward position.
  • the bolts 306 have been accidentally released (i.e.
  • the safety stop 407 remains engaging with the bar 205, that is therefore "trapped" between the fixed engagement means 304 and the safety stop 407, thus avoiding the complete release of the device 300 from the adaptor member 200, and therefore of the tool T from the respective working arm A.
  • the lock and release device 100 described above allows to solve the problem of the wear of the parts abutting with one other, in particular of the various engagement surfaces, and adequately to absorb the stresses, ensuring an at least partial reciprocal lock between the device 300 and the adaptor member 200, thus preventing the device from being accidentally completely released from the adaptor.
  • the present invention allows to provide a fast lock and release system that minimizes, and eliminate, bending or deformations of the abutting parts, in particular of the engagement bar of the fixed element, also in case of high stresses to which the system could be subjected.
  • the lock and release system 100 described above comprises reciprocally engaged parts that can be released from one other by means of simple and immediate operations, without the need for extraordinary maintenance operations, in addition to avoid the undesired blockage of the reciprocally engaged parts. It is clearly apparent that, thanks to these features, the fast lock and release system described above is particularly suitable to be hydraulically controlled.
  • lock and release system 100 simplifies the operation of insertion and extraction of the safety stop, as these operations are performed through the same mechanism allowing to lock and release the bolts.

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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)
EP15156149.5A 2014-02-24 2015-02-23 Verriegelungs- und freisetzungssystem Withdrawn EP2910688A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRA20140007 2014-02-24

Publications (1)

Publication Number Publication Date
EP2910688A1 true EP2910688A1 (de) 2015-08-26

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EP15156149.5A Withdrawn EP2910688A1 (de) 2014-02-24 2015-02-23 Verriegelungs- und freisetzungssystem

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017111649A1 (de) 2017-05-29 2018-11-29 Lehnhoff Hartstahl Gmbh Schnellwechsler
IT201700059602A1 (it) * 2017-05-31 2018-12-01 Dispositivo di accoppiamento
WO2023200391A1 (en) * 2022-04-13 2023-10-19 Steelwrist Ab Lock indicator arrangement and method for a quick coupler and quick coupler comprising the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006083172A1 (en) * 2005-02-04 2006-08-10 Gjerstad Mek. Industri As Quick coupling device for a work tool
EP2055842A2 (de) * 2007-10-30 2009-05-06 Cangini Benne S.R.L. Vorrichtung mit einem Sicherheitsblock zum Ankuppeln eines Werkzeugs an Betätigungsmittel.
US20100124453A1 (en) * 2008-11-20 2010-05-20 Jrb Attachments, Llc Coupler with secondary lock on front hook
GB2492850A (en) * 2011-06-09 2013-01-16 Conor Monaghan Hitch coupler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006083172A1 (en) * 2005-02-04 2006-08-10 Gjerstad Mek. Industri As Quick coupling device for a work tool
EP2055842A2 (de) * 2007-10-30 2009-05-06 Cangini Benne S.R.L. Vorrichtung mit einem Sicherheitsblock zum Ankuppeln eines Werkzeugs an Betätigungsmittel.
US20100124453A1 (en) * 2008-11-20 2010-05-20 Jrb Attachments, Llc Coupler with secondary lock on front hook
GB2492850A (en) * 2011-06-09 2013-01-16 Conor Monaghan Hitch coupler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017111649A1 (de) 2017-05-29 2018-11-29 Lehnhoff Hartstahl Gmbh Schnellwechsler
EP3409839A2 (de) 2017-05-29 2018-12-05 Lehnhoff Hartstahl GmbH Schnellwechsler
EP3409839A3 (de) * 2017-05-29 2019-03-06 Lehnhoff Hartstahl GmbH Schnellwechsler
IT201700059602A1 (it) * 2017-05-31 2018-12-01 Dispositivo di accoppiamento
EP3409840A1 (de) * 2017-05-31 2018-12-05 Cangini Benne S.R.L. Kopplungsvorrichtung
WO2023200391A1 (en) * 2022-04-13 2023-10-19 Steelwrist Ab Lock indicator arrangement and method for a quick coupler and quick coupler comprising the same

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